{
    "A00a": {
        "eco": "A00a",
        "fen": "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1",
        "hash": "5060803636482931868",
        "name": "Start position"
    },
    "A00b": {
        "eco": "A00b",
        "fen": "rnbqkbnr/pppppppp/8/8/8/5P2/PPPPP1PP/RNBQKBNR b KQkq - 0 1",
        "hash": "2921270632758580205",
        "name": "Barnes Opening"
    },
    "A00c": {
        "eco": "A00c",
        "fen": "rnbqkbnr/pppppppp/8/8/7P/8/PPPPPPP1/RNBQKBNR b KQkq h3 0 1",
        "hash": "15751350905480316386",
        "name": "Kadas Opening"
    },
    "A00d": {
        "eco": "A00d",
        "fen": "rnbqkbnr/pppppppp/8/8/8/7P/PPPPPPP1/RNBQKBNR b KQkq - 0 1",
        "hash": "12594399537838306670",
        "name": "Clemenz Opening"
    },
    "A00e": {
        "eco": "A00e",
        "fen": "rnbqkbnr/pppppppp/8/8/P7/8/1PPPPPPP/RNBQKBNR b KQkq a3 0 1",
        "hash": "3310964812804139346",
        "name": "Ware Opening"
    },
    "A00f": {
        "eco": "A00f",
        "fen": "rnbqkbnr/pppppppp/8/8/8/P7/1PPPPPPP/RNBQKBNR b KQkq - 0 1",
        "hash": "10207310966796677852",
        "name": "Anderssen Opening"
    },
    "A00g": {
        "eco": "A00g",
        "fen": "rnbqkbnr/pppppppp/8/8/8/7N/PPPPPPPP/RNBQKB1R b KQkq - 1 1",
        "hash": "3311637314013528902",
        "name": "Amar/Paris Opening"
    },
    "A00h": {
        "eco": "A00h",
        "fen": "rnbqkbnr/pppppppp/8/8/8/N7/PPPPPPPP/R1BQKBNR b KQkq - 1 1",
        "hash": "4746026874478777170",
        "name": "Durkin"
    },
    "A00i": {
        "eco": "A00i",
        "fen": "rnbqkbnr/pppppppp/8/8/8/2P5/PP1PPPPP/RNBQKBNR b KQkq - 0 1",
        "hash": "3522217882952004378",
        "name": "Saragossa"
    },
    "A00j": {
        "eco": "A00j",
        "fen": "rnbqkbnr/pppppppp/8/8/8/3P4/PPP1PPPP/RNBQKBNR b KQkq - 0 1",
        "hash": "16762210678428747592",
        "name": "Mieses"
    },
    "A00k": {
        "eco": "A00k",
        "fen": "rnbqkbnr/pppppppp/8/8/8/4P3/PPPP1PPP/RNBQKBNR b KQkq - 0 1",
        "hash": "16939960875862619192",
        "name": "Van Kruijs"
    },
    "A00l": {
        "eco": "A00l",
        "fen": "rnbqkbnr/pppppppp/8/8/8/2N5/PPPPPPPP/R1BQKBNR b KQkq - 1 1",
        "hash": "13667455902242012741",
        "name": "Van Geet (Dunst) Opening"
    },
    "A00m": {
        "eco": "A00m",
        "fen": "rnbqkbnr/ppp1pppp/8/3p4/8/2N5/PPPPPPPP/R1BQKBNR w KQkq d6 0 2",
        "hash": "4091147176055877731",
        "name": "Van Geet: 1...d5"
    },
    "A00n": {
        "eco": "A00n",
        "fen": "rnbqkbnr/pppppppp/8/8/6P1/8/PPPPPP1P/RNBQKBNR b KQkq g3 0 1",
        "hash": "16534569997232771457",
        "name": "Grob"
    },
    "A00o": {
        "eco": "A00o",
        "fen": "rnbqkbnr/ppp1pppp/8/3p4/6P1/8/PPPPPP1P/RNBQKBNR w KQkq d6 0 2",
        "hash": "6925610276543815591",
        "name": "Grob: 1...d5"
    },
    "A00p": {
        "eco": "A00p",
        "fen": "rnbqkbnr/pppppppp/8/8/1P6/8/P1PPPPPP/RNBQKBNR b KQkq b3 0 1",
        "hash": "17063826403342389432",
        "name": "Polish (Sokolsky; Orang-Utan)"
    },
    "A00q": {
        "eco": "A00q",
        "fen": "rnbqkbnr/ppp1pppp/8/3p4/1P6/8/P1PPPPPP/RNBQKBNR w KQkq d6 0 2",
        "hash": "7612422163856088734",
        "name": "Polish: 1...d5"
    },
    "A00r": {
        "eco": "A00r",
        "fen": "rnbqkbnr/pppp1ppp/8/4p3/1P6/8/P1PPPPPP/RNBQKBNR w KQkq e6 0 2",
        "hash": "7401362514384152718",
        "name": "Polish: 1...e5"
    },
    "A00s": {
        "eco": "A00s",
        "fen": "rnbqk1nr/pppp1ppp/8/4p3/1b6/8/PBPPPPPP/RN1QKBNR w KQkq - 0 3",
        "hash": "14766614082335700219",
        "name": "Polish: 2...Bxb4"
    },
    "A00t": {
        "eco": "A00t",
        "fen": "rnbqkbnr/pppppppp/8/8/8/6P1/PPPPPP1P/RNBQKBNR b KQkq - 0 1",
        "hash": "7700360802280547492",
        "name": "Benko Opening"
    },
    "A00u": {
        "eco": "A00u",
        "fen": "rnbqkbnr/pppp1ppp/8/4p3/8/6P1/PPPPPP1P/RNBQKBNR w KQkq e6 0 2",
        "hash": "16187385200892959890",
        "name": "Benko Opening"
    },
    "A00v": {
        "eco": "A00v",
        "fen": "rnbqkbnr/ppp1pppp/8/3p4/8/6P1/PPPPPP1P/RNBQKBNR w KQkq d6 0 2",
        "hash": "17273291720977705602",
        "name": "Benko Opening"
    },
    "A01": {
        "eco": "A01",
        "fen": "rnbqkbnr/pppppppp/8/8/8/1P6/P1PPPPPP/RNBQKBNR b KQkq - 0 1",
        "hash": "14600096376707389425",
        "name": "Nimzowitsch-Larsen Attack"
    },
    "A02": {
        "eco": "A02",
        "fen": "rnbqkbnr/pppppppp/8/8/5P2/8/PPPPP1PP/RNBQKBNR b KQkq f3 0 1",
        "hash": "13487694934723051797",
        "name": "Bird"
    },
    "A03": {
        "eco": "A03",
        "fen": "rnbqkbnr/ppp1pppp/8/3p4/5P2/8/PPPPP1PP/RNBQKBNR w KQkq d6 0 2",
        "hash": "4487776562310319923",
        "name": "Bird: 1...d5"
    },
    "A04": {
        "eco": "A04",
        "fen": "rnbqkbnr/pppppppp/8/8/8/5N2/PPPPPPPP/RNBQKB1R b KQkq - 1 1",
        "hash": "11339917551484771745",
        "name": "Reti"
    },
    "A05": {
        "eco": "A05",
        "fen": "rnbqkb1r/pppppppp/5n2/8/8/5N2/PPPPPPPP/RNBQKB1R w KQkq - 2 2",
        "hash": "14317310571807890487",
        "name": "Reti: 1...Nf6"
    },
    "A06": {
        "eco": "A06",
        "fen": "rnbqkbnr/ppp1pppp/8/3p4/8/5N2/PPPPPPPP/RNBQKB1R w KQkq d6 0 2",
        "hash": "1744398265243390855",
        "name": "Reti: 1...d5"
    },
    "A07": {
        "eco": "A07",
        "fen": "rnbqkbnr/ppp1pppp/8/3p4/8/5NP1/PPPPPP1P/RNBQKB1R b KQkq - 0 2",
        "hash": "3806636502397750207",
        "name": "Reti: KIA"
    },
    "A08": {
        "eco": "A08",
        "fen": "rnbqkbnr/pp2pppp/8/2pp4/8/5NP1/PPPPPP1P/RNBQKB1R w KQkq c6 0 3",
        "hash": "15177748764215673026",
        "name": "Reti: KIA, 2...c5"
    },
    "A09a": {
        "eco": "A09a",
        "fen": "rnbqkbnr/ppp1pppp/8/3p4/2P5/5N2/PP1PPPPP/RNBQKB1R b KQkq c3 0 2",
        "hash": "10670936126110070912",
        "name": "Reti: 2.c4"
    },
    "A09b": {
        "eco": "A09b",
        "fen": "rnbqkbnr/ppp1pppp/8/8/2Pp4/5N2/PP1PPPPP/RNBQKB1R w KQkq - 0 3",
        "hash": "8537608491875127911",
        "name": "Reti: Advance Variation"
    },
    "A09c": {
        "eco": "A09c",
        "fen": "rnbqkbnr/ppp1pppp/8/8/1PPp4/5N2/P2PPPPP/RNBQKB1R b KQkq b3 0 3",
        "hash": "15892877753215958595",
        "name": "Reti: Advance, Anglo-Polish Attack"
    },
    "A09d": {
        "eco": "A09d",
        "fen": "rnbqkbnr/ppp1pppp/8/8/2Pp4/4PN2/PP1P1PPP/RNBQKB1R b KQkq - 0 3",
        "hash": "15805082735410469571",
        "name": "Reti: Advance, 3.e3"
    },
    "A09e": {
        "eco": "A09e",
        "fen": "rnbqkbnr/pp2pppp/8/2p5/2Pp4/4PN2/PP1P1PPP/RNBQKB1R w KQkq c6 0 4",
        "hash": "4406559671923233214",
        "name": "Reti: Advance, 3.e3 c5"
    },
    "A09f": {
        "eco": "A09f",
        "fen": "r1bqkbnr/ppp1pppp/2n5/8/2Pp4/4PN2/PP1P1PPP/RNBQKB1R w KQkq - 1 4",
        "hash": "8123147789587546048",
        "name": "Reti: Advance, 3.e3 Nc6"
    },
    "A09g": {
        "eco": "A09g",
        "fen": "rnbqkbnr/ppp1pppp/8/8/2Pp4/5NP1/PP1PPP1P/RNBQKB1R b KQkq - 0 3",
        "hash": "6529400261470095967",
        "name": "Reti: Advance, 3.g3"
    },
    "A09h": {
        "eco": "A09h",
        "fen": "r1bqkbnr/ppp1pppp/2n5/8/2Pp4/5NP1/PP1PPP1P/RNBQKB1R w KQkq - 1 4",
        "hash": "17397631944163143516",
        "name": "Reti: Advance, 3.g3 Nc6"
    },
    "A09i": {
        "eco": "A09i",
        "fen": "rnbqkbnr/ppp1pp1p/6p1/8/2Pp4/5NP1/PP1PPP1P/RNBQKB1R w KQkq - 0 4",
        "hash": "12909926407421499412",
        "name": "Reti: Advance, 3.g3 g6"
    },
    "A09j": {
        "eco": "A09j",
        "fen": "rnbqkbnr/pp2pppp/8/2p5/2Pp4/5NP1/PP1PPP1P/RNBQKB1R w KQkq c6 0 4",
        "hash": "13613474986382819618",
        "name": "Reti: Advance, 3.g3 c5"
    },
    "A09k": {
        "eco": "A09k",
        "fen": "rnbqkbnr/ppp1pppp/8/8/2p5/5N2/PP1PPPPP/RNBQKB1R w KQkq - 0 3",
        "hash": "5048815475934533219",
        "name": "Reti: Accepted"
    },
    "A09l": {
        "eco": "A09l",
        "fen": "rnbqkbnr/ppp1pppp/8/8/2p5/5NP1/PP1PPP1P/RNBQKB1R b KQkq - 0 3",
        "hash": "7707424421946150491",
        "name": "Reti: Accepted, 3.g3"
    },
    "A09m": {
        "eco": "A09m",
        "fen": "rnbqkbnr/ppp2ppp/4p3/8/2p5/5NP1/PP1PPP1P/RNBQKB1R w KQkq - 0 4",
        "hash": "2054124785891794441",
        "name": "Reti: Accepted, 3.g3 e6"
    },
    "A09n": {
        "eco": "A09n",
        "fen": "rnbqkbnr/ppp1pppp/8/8/Q1p5/5N2/PP1PPPPP/RNB1KB1R b KQkq - 1 3",
        "hash": "10715263781646918680",
        "name": "Reti: Accepted, 3.Qa4+"
    },
    "A09o": {
        "eco": "A09o",
        "fen": "rnbqkbnr/ppp1pppp/8/8/2p5/N4N2/PP1PPPPP/R1BQKB1R b KQkq - 1 3",
        "hash": "4753037855125715373",
        "name": "Reti: Accepted, 3.Na3"
    },
    "A09p": {
        "eco": "A09p",
        "fen": "rnbqkbnr/1pp1pppp/p7/8/2p5/N4N2/PP1PPPPP/R1BQKB1R w KQkq - 0 4",
        "hash": "10592993320254849393",
        "name": "Reti: Accepted, 3.Na3 a6"
    },
    "A09q": {
        "eco": "A09q",
        "fen": "rnbqkbnr/pp2pppp/8/2p5/2p5/N4N2/PP1PPPPP/R1BQKB1R w KQkq c6 0 4",
        "hash": "12071897778453197520",
        "name": "Reti: Accepted, 3.Na3 c5"
    },
    "A09r": {
        "eco": "A09r",
        "fen": "rnbqkbnr/ppp1pppp/8/8/2p5/4PN2/PP1P1PPP/RNBQKB1R b KQkq - 0 3",
        "hash": "16950911688025906887",
        "name": "Reti: Accepted, 3.e3"
    },
    "A09s": {
        "eco": "A09s",
        "fen": "rn1qkbnr/ppp1pppp/4b3/8/2p5/4PN2/PP1P1PPP/RNBQKB1R w KQkq - 1 4",
        "hash": "13800487806062585295",
        "name": "Reti: Accepted, Keres Variation"
    },
    "A09t": {
        "eco": "A09t",
        "fen": "rnbqkb1r/ppp1pppp/5n2/8/2p5/4PN2/PP1P1PPP/RNBQKB1R w KQkq - 1 4",
        "hash": "12741678040832499537",
        "name": "Reti: Accepted, 3.e3 Nf6"
    },
    "A09u": {
        "eco": "A09u",
        "fen": "rnbqkb1r/ppp2ppp/4pn2/8/2B5/4PN2/PP1P1PPP/RNBQK2R w KQkq - 0 5",
        "hash": "2505630842399853490",
        "name": "Reti: Accepted, 3.e3 Nf6 4.Bxc4 e6"
    },
    "A10": {
        "eco": "A10",
        "fen": "rnbqkbnr/pppppppp/8/8/2P5/8/PP1PPPPP/RNBQKBNR b KQkq c3 0 1",
        "hash": "14562399549841627035",
        "name": "English"
    },
    "A11": {
        "eco": "A11",
        "fen": "rnbqkbnr/pp1ppppp/2p5/8/2P5/8/PP1PPPPP/RNBQKBNR w KQkq - 0 2",
        "hash": "6368904418521154592",
        "name": "English: Caro-Kann Defence"
    },
    "A12": {
        "eco": "A12",
        "fen": "rnbqkbnr/pp2pppp/2p5/3p4/2P5/1P3N2/P2PPPPP/RNBQKB1R b KQkq - 0 3",
        "hash": "10000887720397881430",
        "name": "English: Caro-Kann Defence, 3.b3"
    },
    "A13a": {
        "eco": "A13a",
        "fen": "rnbqkbnr/pppp1ppp/4p3/8/2P5/8/PP1PPPPP/RNBQKBNR w KQkq - 0 2",
        "hash": "13578347436102698953",
        "name": "English: 1...e6"
    },
    "A13b": {
        "eco": "A13b",
        "fen": "rnbqkbnr/pppp1ppp/4p3/8/2P5/6P1/PP1PPP1P/RNBQKBNR b KQkq - 0 2",
        "hash": "10414926311342153713",
        "name": "English: 1...e6 2.g3"
    },
    "A13c": {
        "eco": "A13c",
        "fen": "rnbqkbnr/ppp2ppp/4p3/3p4/2P5/6P1/PP1PPP1P/RNBQKBNR w KQkq d6 0 3",
        "hash": "1577212425441071575",
        "name": "English: 1...e6 2.g3 d5"
    },
    "A13d": {
        "eco": "A13d",
        "fen": "rnbqkbnr/ppp2ppp/4p3/3p4/2P5/6P1/PP1PPPBP/RNBQK1NR b KQkq - 1 3",
        "hash": "11534634699881351598",
        "name": "English: 1...e6 2.g3 d5"
    },
    "A13e": {
        "eco": "A13e",
        "fen": "rnbqkbnr/pppp1ppp/4p3/8/2P5/2N5/PP1PPPPP/R1BQKBNR b KQkq - 1 2",
        "hash": "5186145314081228048",
        "name": "English: 1...e6 2.Nc3"
    },
    "A13f": {
        "eco": "A13f",
        "fen": "rnbqk1nr/pppp1ppp/4p3/8/1bP5/2N5/PP1PPPPP/R1BQKBNR w KQkq - 2 3",
        "hash": "10284403685830790450",
        "name": "English: 1...e6 2.Nc3 Bb4"
    },
    "A13g": {
        "eco": "A13g",
        "fen": "rnbqkbnr/ppp2ppp/4p3/3p4/2P5/2N5/PP1PPPPP/R1BQKBNR w KQkq d6 0 3",
        "hash": "14020481599188634422",
        "name": "English: 1...e6 2.Nc3 d5"
    },
    "A13h": {
        "eco": "A13h",
        "fen": "rnbqkbnr/pppp1ppp/4p3/8/2P5/5N2/PP1PPPPP/RNBQKB1R b KQkq - 1 2",
        "hash": "7425054778081322740",
        "name": "English: 1...e6 2.Nf3"
    },
    "A13i": {
        "eco": "A13i",
        "fen": "rnbqkb1r/pppp1ppp/4pn2/8/2P5/5N2/PP1PPPPP/RNBQKB1R w KQkq - 2 3",
        "hash": "4387951957271177058",
        "name": "English: 1...e6 2.Nf3 Nf6"
    },
    "A13j": {
        "eco": "A13j",
        "fen": "rnbqkb1r/pppp1ppp/4pn2/8/2P5/5NP1/PP1PPP1P/RNBQKB1R b KQkq - 0 3",
        "hash": "1153933396359462746",
        "name": "English: 1...e6 2.Nf3 Nf6 3.g3"
    },
    "A13k": {
        "eco": "A13k",
        "fen": "rnbqkb1r/2pp1ppp/p3pn2/1p6/2P5/5NP1/PP1PPPBP/RNBQK2R w KQkq b6 0 5",
        "hash": "1657360759272219330",
        "name": "English: Romanishin Gambit"
    },
    "A13l": {
        "eco": "A13l",
        "fen": "rnbqkbnr/ppp2ppp/4p3/3p4/2P5/5N2/PP1PPPPP/RNBQKB1R w KQkq d6 0 3",
        "hash": "16312378629039253714",
        "name": "English: 1...e6 2.Nf3 d5"
    },
    "A13m": {
        "eco": "A13m",
        "fen": "rnbqkbnr/ppp2ppp/4p3/3p4/2P5/1P3N2/P2PPPPP/RNBQKB1R b KQkq - 0 3",
        "hash": "7982443127845913535",
        "name": "English: Agincourt Variation"
    },
    "A13n": {
        "eco": "A13n",
        "fen": "rnbqkb1r/pp3ppp/4pn2/2pp4/2P5/1P2PN2/PB1P1PPP/RN1QKB1R b KQkq - 0 5",
        "hash": "13693502907570052383",
        "name": "English: Wimpey System"
    },
    "A13o": {
        "eco": "A13o",
        "fen": "rnbqkbnr/ppp2ppp/4p3/3p4/2P5/5NP1/PP1PPP1P/RNBQKB1R b KQkq - 0 3",
        "hash": "14882020373143564522",
        "name": "English: Agincourt Variation"
    },
    "A13p": {
        "eco": "A13p",
        "fen": "rnbqkbnr/pp3ppp/2p1p3/3p4/2P5/5NP1/PP1PPP1P/RNBQKB1R w KQkq - 0 4",
        "hash": "6700620952203027281",
        "name": "English: Kurajica Defence"
    },
    "A13q": {
        "eco": "A13q",
        "fen": "rnbqkbnr/pp3ppp/2p1p3/3p4/2P5/5NP1/PPQPPP1P/RNB1KB1R b KQkq - 1 4",
        "hash": "17141845169525481269",
        "name": "English: Kurajica Defence"
    },
    "A13r": {
        "eco": "A13r",
        "fen": "rnbqkb1r/ppp2ppp/4pn2/3p4/2P5/5NP1/PP1PPP1P/RNBQKB1R w KQkq - 1 4",
        "hash": "10766341288315023740",
        "name": "English: Neo-Catalan"
    },
    "A13s": {
        "eco": "A13s",
        "fen": "rnbqkb1r/ppp2ppp/4pn2/3p4/2P5/5NP1/PP1PPPBP/RNBQK2R b KQkq - 2 4",
        "hash": "2349077072247171333",
        "name": "English: Neo-Catalan"
    },
    "A13t": {
        "eco": "A13t",
        "fen": "rnbqkb1r/pp3ppp/4pn2/2pp4/2P5/5NP1/PP1PPPBP/RNBQK2R w KQkq c6 0 5",
        "hash": "14332785564234392184",
        "name": "English: Neo-Catalan, 4...c5"
    },
    "A13u": {
        "eco": "A13u",
        "fen": "rnbqkb1r/ppp2ppp/4pn2/8/2p5/5NP1/PP1PPPBP/RNBQK2R w KQkq - 0 5",
        "hash": "17482868290185349094",
        "name": "English: Neo-Catalan Accepted"
    },
    "A13v": {
        "eco": "A13v",
        "fen": "rnbqkb1r/ppp2ppp/4pn2/8/Q1p5/5NP1/PP1PPPBP/RNB1K2R b KQkq - 1 5",
        "hash": "2322482310245430685",
        "name": "English: Neo-Catalan Accepted, 5.Qa4+"
    },
    "A13w": {
        "eco": "A13w",
        "fen": "r1bqkb1r/pppn1ppp/4pn2/8/2Q5/5NP1/PP1PPPBP/RNB1K2R b KQkq - 0 6",
        "hash": "15319245815798063598",
        "name": "English: Neo-Catalan Accepted, 5.Qa4+ Nbd7 6.Qxc4"
    },
    "A14": {
        "eco": "A14",
        "fen": "rnbqk2r/ppp1bppp/4pn2/3p4/2P5/5NP1/PP1PPPBP/RNBQK2R w KQkq - 3 5",
        "hash": "3771178413946373524",
        "name": "English: Neo-Catalan Declined"
    },
    "A15": {
        "eco": "A15",
        "fen": "rnbqkb1r/pppppppp/5n2/8/2P5/8/PP1PPPPP/RNBQKBNR w KQkq - 1 2",
        "hash": "10517661917435401741",
        "name": "English: Anglo-Indian"
    },
    "A16": {
        "eco": "A16",
        "fen": "rnbqkb1r/pppppppp/5n2/8/2P5/2N5/PP1PPPPP/R1BQKBNR b KQkq - 2 2",
        "hash": "7665449183234921684",
        "name": "English: Anglo-Indian, 2.Nc3"
    },
    "A17": {
        "eco": "A17",
        "fen": "rnbqkb1r/pppp1ppp/4pn2/8/2P5/2N5/PP1PPPPP/R1BQKBNR w KQkq - 0 3",
        "hash": "2024041864677819526",
        "name": "English: Anglo-Indian, 2.Nc3 e6"
    },
    "A18": {
        "eco": "A18",
        "fen": "rnbqkb1r/pppp1ppp/4pn2/8/2P1P3/2N5/PP1P1PPP/R1BQKBNR b KQkq e3 0 3",
        "hash": "15569465161015409036",
        "name": "English: Mikenas"
    },
    "A19": {
        "eco": "A19",
        "fen": "rnbqkb1r/pp1p1ppp/4pn2/2p5/2P1P3/2N5/PP1P1PPP/R1BQKBNR w KQkq c6 0 4",
        "hash": "4494605331110015729",
        "name": "English: Mikenas, Sicilian Variation"
    },
    "A20": {
        "eco": "A20",
        "fen": "rnbqkbnr/pppp1ppp/8/4p3/2P5/8/PP1PPPPP/RNBQKBNR w KQkq e6 0 2",
        "hash": "4638709225839374253",
        "name": "English: King's (1...e5)"
    },
    "A21": {
        "eco": "A21",
        "fen": "rnbqkbnr/pppp1ppp/8/4p3/2P5/2N5/PP1PPPPP/R1BQKBNR b KQkq - 1 2",
        "hash": "13544322802740964724",
        "name": "English: King's, 2.Nc3"
    },
    "A22": {
        "eco": "A22",
        "fen": "rnbqkb1r/pppp1ppp/5n2/4p3/2P5/2N5/PP1PPPPP/R1BQKBNR w KQkq - 2 3",
        "hash": "16147987561512660194",
        "name": "English: King's, 2.Nc3 Nf6"
    },
    "A23": {
        "eco": "A23",
        "fen": "rnbqkb1r/pp1p1ppp/2p2n2/4p3/2P5/2N3P1/PP1PPP1P/R1BQKBNR w KQkq - 0 4",
        "hash": "6810985866626099041",
        "name": "English: Bremen, Keres System"
    },
    "A24": {
        "eco": "A24",
        "fen": "rnbqkb1r/pppp1p1p/5np1/4p3/2P5/2N3P1/PP1PPP1P/R1BQKBNR w KQkq - 0 4",
        "hash": "2687458460693112465",
        "name": "English: Bremen, 3...g6"
    },
    "A25": {
        "eco": "A25",
        "fen": "r1bqkbnr/pppp1ppp/2n5/4p3/2P5/2N5/PP1PPPPP/R1BQKBNR w KQkq - 2 3",
        "hash": "1160452292026599543",
        "name": "English: Closed"
    },
    "A26": {
        "eco": "A26",
        "fen": "r1bqk1nr/ppp2pbp/2np2p1/4p3/2P5/2NP2P1/PP2PPBP/R1BQK1NR w KQkq - 0 6",
        "hash": "5123515637629592430",
        "name": "English: Closed, 5.d3 d6"
    },
    "A27": {
        "eco": "A27",
        "fen": "r1bqkbnr/pppp1ppp/2n5/4p3/2P5/2N2N2/PP1PPPPP/R1BQKB1R b KQkq - 3 3",
        "hash": "14663207741534693706",
        "name": "English: Three Knights"
    },
    "A28": {
        "eco": "A28",
        "fen": "r1bqkb1r/pppp1ppp/2n2n2/4p3/2P5/2N2N2/PP1PPPPP/R1BQKB1R w KQkq - 4 4",
        "hash": "10416853657022933212",
        "name": "English: Four Knights"
    },
    "A29": {
        "eco": "A29",
        "fen": "r1bqkb1r/pppp1ppp/2n2n2/4p3/2P5/2N2NP1/PP1PPP1P/R1BQKB1R b KQkq - 0 4",
        "hash": "13580220346300330212",
        "name": "English: Four Knights, 4.g3"
    },
    "A30a": {
        "eco": "A30a",
        "fen": "rnbqkbnr/pp1ppppp/8/2p5/2P5/8/PP1PPPPP/RNBQKBNR w KQkq c6 0 2",
        "hash": "3200327134666644710",
        "name": "English: Symmetrical"
    },
    "A30b": {
        "eco": "A30b",
        "fen": "rnbqkbnr/pp1ppppp/8/2p5/2P5/5N2/PP1PPPPP/RNBQKB1R b KQkq - 1 2",
        "hash": "17801942509425737179",
        "name": "English: Symmetrical, 2.Nf3"
    },
    "A30c": {
        "eco": "A30c",
        "fen": "rnbqkb1r/pp1ppppp/5n2/2p5/2P5/5N2/PP1PPPPP/RNBQKB1R w KQkq - 2 3",
        "hash": "12457801618882395213",
        "name": "English: Symmetrical, 2.Nf3 Nf6"
    },
    "A30d": {
        "eco": "A30d",
        "fen": "rnbqkb1r/pp1ppppp/5n2/2p5/2P5/5NP1/PP1PPP1P/RNBQKB1R b KQkq - 0 3",
        "hash": "9224985916166284405",
        "name": "English: Symmetrical, 2.Nf3 Nf6 3.g3"
    },
    "A30e": {
        "eco": "A30e",
        "fen": "rnbqkb1r/p2ppppp/1p3n2/2p5/2P5/5NP1/PP1PPP1P/RNBQKB1R w KQkq - 0 4",
        "hash": "16964200804750791662",
        "name": "English: Symmetrical, b6 System"
    },
    "A30f": {
        "eco": "A30f",
        "fen": "rn1qkb1r/pb1ppp1p/1p3np1/2p5/2P5/5NP1/PP1PPPBP/RNBQ1RK1 w kq - 0 6",
        "hash": "8776866232970390871",
        "name": "English: Symmetrical, Double Fianchetto"
    },
    "A30g": {
        "eco": "A30g",
        "fen": "rn1qkb1r/pb1ppp1p/1p3np1/2p5/2P5/1P3NP1/P2PPPBP/RNBQ1RK1 b kq - 0 6",
        "hash": "17684458170801407546",
        "name": "English: Symmetrical, Mutual Double Fianchetto"
    },
    "A30h": {
        "eco": "A30h",
        "fen": "rn1qkb1r/pb1p1ppp/1p2pn2/2p5/2P5/5NP1/PP1PPPBP/RNBQ1RK1 w kq - 0 6",
        "hash": "16577205129002823502",
        "name": "English: Symmetrical, Hedgehog System"
    },
    "A30i": {
        "eco": "A30i",
        "fen": "rn1qkb1r/1b1p1ppp/pp2pn2/2p5/2P5/2N2NP1/PP1PPPBP/R1BQ1RK1 w kq - 0 7",
        "hash": "14947158460091684171",
        "name": "English: Symmetrical, Hedgehog, 6...a6"
    },
    "A30j": {
        "eco": "A30j",
        "fen": "rn1qkb1r/pb3ppp/1p1ppn2/2p5/2P5/2N2NP1/PP1PPPBP/R1BQ1RK1 w kq - 0 7",
        "hash": "2604099828583884026",
        "name": "English: Symmetrical, Hedgehog, 6...d6"
    },
    "A30k": {
        "eco": "A30k",
        "fen": "rn1qkb1r/pb3ppp/1p1ppn2/2p5/2P5/1PN2NP1/P2PPPBP/R1BQ1RK1 b kq - 0 7",
        "hash": "12143391984440610711",
        "name": "English: Symmetrical, Hedgehog, 6...d6 7.b3"
    },
    "A30l": {
        "eco": "A30l",
        "fen": "rn1qkb1r/pb3ppp/1p1ppn2/2p5/2PP4/2N2NP1/PP2PPBP/R1BQ1RK1 b kq d3 0 7",
        "hash": "16219346087384500664",
        "name": "English: Symmetrical, Hedgehog, 6...d6 7.d4"
    },
    "A30m": {
        "eco": "A30m",
        "fen": "rn1qk2r/pb1pbppp/1p2pn2/2p5/2P5/2N2NP1/PP1PPPBP/R1BQ1RK1 w kq - 2 7",
        "hash": "672579445205631238",
        "name": "English: Symmetrical, Hedgehog System"
    },
    "A30n": {
        "eco": "A30n",
        "fen": "rn1qk2r/pb1pbppp/1p2pn2/2p5/2P5/2N2NP1/PP1PPPBP/R1BQR1K1 b kq - 3 7",
        "hash": "10223582348480260626",
        "name": "English: Symmetrical, Hedgehog, 7.Re1"
    },
    "A30o": {
        "eco": "A30o",
        "fen": "rn1qk2r/pb2bppp/1p2pn2/2pp4/2P5/2N2NP1/PP1PPPBP/R1BQR1K1 w kq d6 0 8",
        "hash": "615682454749635636",
        "name": "English: Symmetrical, Hedgehog, 7.Re1 d5"
    },
    "A30p": {
        "eco": "A30p",
        "fen": "rn1qk2r/pb1pbppp/1p2pn2/2p5/2P5/1PN2NP1/P2PPPBP/R1BQ1RK1 b kq - 0 7",
        "hash": "9652088276277488235",
        "name": "English: Symmetrical, Hedgehog, 7.b3"
    },
    "A30q": {
        "eco": "A30q",
        "fen": "rn1qk2r/pb1pbppp/1p2pn2/2p5/2PP4/2N2NP1/PP2PPBP/R1BQ1RK1 b kq d3 0 7",
        "hash": "14726864081940065348",
        "name": "English: Symmetrical, Hedgehog, 7.d4"
    },
    "A30r": {
        "eco": "A30r",
        "fen": "rn1qk2r/pb1pbppp/1p2pn2/8/2PQ4/2N2NP1/PP2PPBP/R1B2RK1 b kq - 0 8",
        "hash": "17206557812178201279",
        "name": "English: Symmetrical, Hedgehog, 8.Qxd4"
    },
    "A30s": {
        "eco": "A30s",
        "fen": "rn1q1rk1/pb1pbppp/1p2pn2/8/2PQ4/2N2NP1/PP2PPBP/R1B2RK1 w - - 1 9",
        "hash": "16456457180871344980",
        "name": "English: Symmetrical, Hedgehog, 8.Qxd4 O-O"
    },
    "A30t": {
        "eco": "A30t",
        "fen": "r2qk2r/pb1pbppp/1pn1pn2/8/2PQ4/2N2NP1/PP2PPBP/R1B2RK1 w kq - 1 9",
        "hash": "4982144232460062652",
        "name": "English: Symmetrical, Hedgehog, 8.Qxd4 Nc6"
    },
    "A30u": {
        "eco": "A30u",
        "fen": "rn1qk2r/pb2bppp/1p1ppn2/8/2PQ4/2N2NP1/PP2PPBP/R1B2RK1 w kq - 0 9",
        "hash": "15524874711214515154",
        "name": "English: Symmetrical, Hedgehog, 8.Qxd4 d6"
    },
    "A30v": {
        "eco": "A30v",
        "fen": "rn1qk2r/pb2bppp/1p1ppn2/8/2PQ4/1PN2NP1/P3PPBP/R1B2RK1 b kq - 0 9",
        "hash": "6617211855237515455",
        "name": "English: Symmetrical, Hedgehog, 9.b3"
    },
    "A30w": {
        "eco": "A30w",
        "fen": "rn1qk2r/pb2bppp/1p1ppn2/8/2PQ4/2N2NP1/PP2PPBP/R1BR2K1 b kq - 1 9",
        "hash": "4202244991622780381",
        "name": "English: Symmetrical, Hedgehog, 9.Rd1"
    },
    "A30x": {
        "eco": "A30x",
        "fen": "r2qk2r/1b1nbppp/pp1ppn2/8/2PQ4/1PN2NP1/P3PPBP/R1BR2K1 w kq - 1 11",
        "hash": "6333105014823873440",
        "name": "English: Symmetrical, Hedgehog, Flexible Formation"
    },
    "A30y": {
        "eco": "A30y",
        "fen": "r2qk2r/1b1nbppp/pp1ppn2/8/2PQP3/1PN2NP1/P4PBP/R1BR2K1 b kq e3 0 11",
        "hash": "10656845186209076906",
        "name": "English: Symmetrical, Hedgehog, Flexible Formation"
    },
    "A31": {
        "eco": "A31",
        "fen": "rnbqkb1r/pp1ppppp/5n2/2p5/2PP4/5N2/PP2PPPP/RNBQKB1R b KQkq d3 0 3",
        "hash": "7626334951562825999",
        "name": "English: Symmetrical, Two Knights"
    },
    "A32": {
        "eco": "A32",
        "fen": "rnbqkb1r/pp1p1ppp/4pn2/8/2PN4/8/PP2PPPP/RNBQKB1R w KQkq - 0 5",
        "hash": "2822413784242141877",
        "name": "English: Symmetrical, Two Knights, 4...e6"
    },
    "A33a": {
        "eco": "A33a",
        "fen": "r1bqkb1r/pp1p1ppp/2n1pn2/8/2PN4/2N5/PP2PPPP/R1BQKB1R w KQkq - 2 6",
        "hash": "8597928191213444463",
        "name": "English: Symmetrical, Two Knights, 5.Nc3 Nc6"
    },
    "A33b": {
        "eco": "A33b",
        "fen": "r1bqkb1r/pp1p1ppp/2n1pn2/8/2PN1B2/2N5/PP2PPPP/R2QKB1R b KQkq - 3 6",
        "hash": "12395345036902463244",
        "name": "English: Symmetrical, Two Knights, 5.Nc3 Nc6 6.Bf4"
    },
    "A33c": {
        "eco": "A33c",
        "fen": "r1bqkb1r/pp1p1ppp/2n1pn2/6B1/2PN4/2N5/PP2PPPP/R2QKB1R b KQkq - 3 6",
        "hash": "12757480672630851239",
        "name": "English: Symmetrical, Two Knights, 5.Nc3 Nc6 6.Bg5"
    },
    "A33d": {
        "eco": "A33d",
        "fen": "r1bqkb1r/pp1p1ppp/2n1pn2/8/2PN4/2N1P3/PP3PPP/R1BQKB1R b KQkq - 0 6",
        "hash": "15743661330252928459",
        "name": "English: Symmetrical, Two Knights, 5.Nc3 Nc6 6.e3"
    },
    "A33e": {
        "eco": "A33e",
        "fen": "r1bqkb1r/pp1p1ppp/2n1pn2/8/2PN4/P1N5/1P2PPPP/R1BQKB1R b KQkq - 0 6",
        "hash": "13604753269826294575",
        "name": "English: Symmetrical, Two Knights, 5.Nc3 Nc6 6.a3"
    },
    "A33f": {
        "eco": "A33f",
        "fen": "r1bqk2r/pp1p1ppp/2n1pn2/2b5/2PN4/P1N5/1P2PPPP/R1BQKB1R w KQkq - 1 7",
        "hash": "1283683533510310316",
        "name": "English: Symmetrical, Two Knights, 5.Nc3 Nc6 6.a3 Bc5"
    },
    "A33g": {
        "eco": "A33g",
        "fen": "r1bqkb1r/pp1p1ppp/2n1pn2/1N6/2P5/2N5/PP2PPPP/R1BQKB1R b KQkq - 3 6",
        "hash": "9384112183669434169",
        "name": "English: Symmetrical, Two Knights, 5.Nc3 Nc6 6.Ndb5"
    },
    "A33h": {
        "eco": "A33h",
        "fen": "r1bqk2r/pp1p1ppp/2n1pn2/1N6/1bP5/2N5/PP2PPPP/R1BQKB1R w KQkq - 4 7",
        "hash": "5438792856925892379",
        "name": "English: Symmetrical, Two Knights, 5.Nc3 Nc6 6.Ndb5 Bb4"
    },
    "A33i": {
        "eco": "A33i",
        "fen": "r1bqkb1r/pp3ppp/2n1pn2/1N1p4/2P5/2N5/PP2PPPP/R1BQKB1R w KQkq d6 0 7",
        "hash": "527257998957766943",
        "name": "English: Symmetrical, Two Knights, 5.Nc3 Nc6 6.Ndb5 d5"
    },
    "A33j": {
        "eco": "A33j",
        "fen": "r1bk1b1r/p4ppp/2p2n2/1N6/5p2/2N5/PP2PPPP/R3KB1R w KQ - 0 11",
        "hash": "364453660027997262",
        "name": "English: Symmetrical, Two Knights, 5.Nc3 Nc6 6.Ndb5 d5 Queenswap"
    },
    "A33k": {
        "eco": "A33k",
        "fen": "r1bqkb1r/pp1p1ppp/2n1pn2/8/2PN4/2N3P1/PP2PP1P/R1BQKB1R b KQkq - 0 6",
        "hash": "6608822872608589143",
        "name": "English: Symmetrical, Two Knights, 5.Nc3 Nc6 6.g3"
    },
    "A33l": {
        "eco": "A33l",
        "fen": "r1bqkb1r/1p1p1ppp/p1n1pn2/8/2PN4/2N3P1/PP2PP1P/R1BQKB1R w KQkq - 0 7",
        "hash": "9890098917959220619",
        "name": "English: Symmetrical, Two Knights, 5.Nc3 Nc6 6.g3 a6"
    },
    "A33m": {
        "eco": "A33m",
        "fen": "r1bqk2r/pp1p1ppp/2n1pn2/8/1bPN4/2N3P1/PP2PP1P/R1BQKB1R w KQkq - 1 7",
        "hash": "10589695989989772661",
        "name": "English: Symmetrical, Two Knights, 5.Nc3 Nc6 6.g3 Bb4"
    },
    "A33n": {
        "eco": "A33n",
        "fen": "r1bqk2r/pp1p1ppp/2n1pn2/2b5/2PN4/2N3P1/PP2PP1P/R1BQKB1R w KQkq - 1 7",
        "hash": "17774024621532458964",
        "name": "English: Symmetrical, Two Knights, 5.Nc3 Nc6 6.g3 Bc5"
    },
    "A33o": {
        "eco": "A33o",
        "fen": "r1b1kb1r/pp1p1ppp/1qn1pn2/8/2PN4/2N3P1/PP2PP1P/R1BQKB1R w KQkq - 1 7",
        "hash": "11261461102376260493",
        "name": "English: Symmetrical, Geller Variation"
    },
    "A33p": {
        "eco": "A33p",
        "fen": "r1b1kb1r/pp1p1ppp/1qn1pn2/8/2P5/1NN3P1/PP2PP1P/R1BQKB1R b KQkq - 2 7",
        "hash": "592653371212813639",
        "name": "English: Symmetrical, Geller, 7.Nb3"
    },
    "A33q": {
        "eco": "A33q",
        "fen": "r1b1kb1r/pp1p1ppp/1q2pn2/4n3/2P5/1NN3P1/PP2PP1P/R1BQKB1R w KQkq - 3 8",
        "hash": "17898600496826744615",
        "name": "English: Symmetrical, Geller, 7.Nb3 Ne5"
    },
    "A34": {
        "eco": "A34",
        "fen": "rnbqkbnr/pp1ppppp/8/2p5/2P5/2N5/PP1PPPPP/R1BQKBNR b KQkq - 1 2",
        "hash": "15564088676378730047",
        "name": "English: Symmetrical"
    },
    "A35a": {
        "eco": "A35a",
        "fen": "r1bqkbnr/pp1ppppp/2n5/2p5/2P5/2N5/PP1PPPPP/R1BQKBNR w KQkq - 2 3",
        "hash": "8940516977523981116",
        "name": "English: Symmetrical"
    },
    "A35b": {
        "eco": "A35b",
        "fen": "r1bqkbnr/pp1ppppp/2n5/2p5/2P5/2N1P3/PP1P1PPP/R1BQKBNR b KQkq - 0 3",
        "hash": "15077587972422759320",
        "name": "English: Symmetrical, 2.Nc3 Nc6 3.e3"
    },
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        "hash": "6797520515023894035",
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        "hash": "12034748910607223406",
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        "hash": "18224432351968562168",
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        "hash": "3933807376954504116",
        "name": "Neo-Old Indian: 2.c4"
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        "hash": "13614303320549804930",
        "name": "Neo-Old Indian: 2.c4 e5"
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        "hash": "497643286101253599",
        "name": "Neo-Old Indian: 2.c4 e5 3.d5"
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    "A41o": {
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        "hash": "2338010317335788786",
        "name": "Neo-Old Indian: 2.c4 e5 3.dxe5"
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    "A41p": {
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        "hash": "7461149890600282815",
        "name": "Neo-Old Indian: 2.c4 e5 3.Nf3"
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        "hash": "16078945426503410175",
        "name": "Neo-Old Indian: Modern"
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    "A41r": {
        "eco": "A41r",
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        "hash": "308231980955648194",
        "name": "Neo-Old Indian: Modern, 3.Nf3"
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    "A41s": {
        "eco": "A41s",
        "fen": "rnbqk1nr/ppp1ppbp/3p2p1/8/2PPP3/5N2/PP3PPP/RNBQKB1R b KQkq e3 0 4",
        "hash": "8141452202494506594",
        "name": "Neo-Old Indian: Modern, 3.Nf3 Bg7 4.e4"
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    "A41t": {
        "eco": "A41t",
        "fen": "rnbqkbnr/ppp1pp1p/3p2p1/8/2PP4/2N5/PP2PPPP/R1BQKBNR b KQkq - 1 3",
        "hash": "2645014919514301222",
        "name": "Neo-Old Indian: Modern, 3.Nc3"
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    "A41u": {
        "eco": "A41u",
        "fen": "rnbqk1nr/ppp1ppbp/3p2p1/8/2PP4/2N2N2/PP2PPPP/R1BQKB1R b KQkq - 3 4",
        "hash": "5722995744145902001",
        "name": "Neo-Old Indian: Modern, 3.Nc3 Bg7 4.Nf3"
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    "A41v": {
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        "hash": "5602443288870553435",
        "name": "Neo-Old Indian: Modern, 3.Nc3 Bg7 4.Nf3 Bf4"
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        "eco": "A41w",
        "fen": "rn1qk1nr/ppp1ppbp/3p2p1/8/2PP2b1/2N1PN2/PP3PPP/R1BQKB1R b KQkq - 0 5",
        "hash": "16182175420487634943",
        "name": "Neo-Old Indian: Modern, 3.Nc3 Bg7 4.Nf3 Bf4 5.e3"
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        "eco": "A42a",
        "fen": "rnbqk1nr/ppp1ppbp/3p2p1/8/2PPP3/2N5/PP3PPP/R1BQKBNR b KQkq e3 0 4",
        "hash": "5769053880403187078",
        "name": "Modern: Averbakh"
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        "eco": "A42b",
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        "hash": "14150500697846413400",
        "name": "Modern: Averbakh, Randspringer Variation"
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        "eco": "A42c",
        "fen": "rnbqk1nr/pp2ppbp/3p2p1/2p5/2PPP3/2N5/PP3PPP/R1BQKBNR w KQkq c6 0 5",
        "hash": "13149976956231638779",
        "name": "Modern: c4 Pterodactyl"
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    "A42d": {
        "eco": "A42d",
        "fen": "rnbqk1nr/pp2ppbp/2pp2p1/8/2PPP3/2N5/PP3PPP/R1BQKBNR w KQkq - 0 5",
        "hash": "14012147731431523901",
        "name": "Modern: Averbakh, 4...c6"
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    "A42e": {
        "eco": "A42e",
        "fen": "rnbqk1nr/pp2ppbp/2pp2p1/8/2PPP3/2N2N2/PP3PPP/R1BQKB1R b KQkq - 1 5",
        "hash": "1806448028176082688",
        "name": "Modern: Averbakh, 4...c6 5.Nf3"
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    "A42f": {
        "eco": "A42f",
        "fen": "r1bqk1nr/pppnppbp/3p2p1/8/2PPP3/2N5/PP3PPP/R1BQKBNR w KQkq - 1 5",
        "hash": "7200324165078726730",
        "name": "Modern: Averbakh, 4...Nd7"
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    "A42g": {
        "eco": "A42g",
        "fen": "r1bqk1nr/ppp1ppbp/2np2p1/8/2PPP3/2N5/PP3PPP/R1BQKBNR w KQkq - 1 5",
        "hash": "18150090417059983493",
        "name": "Modern: Averbakh, Kotov Variation"
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    "A42h": {
        "eco": "A42h",
        "fen": "r1bqk1nr/ppp1ppbp/2np2p1/3P4/2P1P3/2N5/PP3PPP/R1BQKBNR b KQkq - 0 5",
        "hash": "4749697000192239320",
        "name": "Modern: Averbakh, Kotov, 5.d5"
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    "A42i": {
        "eco": "A42i",
        "fen": "r1bqk1nr/ppp1ppbp/2np2p1/8/2PPP3/2N1B3/PP3PPP/R2QKBNR b KQkq - 2 5",
        "hash": "9865883745522739979",
        "name": "Modern: Averbakh, Kotov, 5.Be3"
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        "eco": "A42j",
        "fen": "r1bqk1nr/ppp2pbp/2np2p1/4p3/2PPP3/2N1B3/PP3PPP/R2QKBNR w KQkq e6 0 6",
        "hash": "185387230650110781",
        "name": "Modern: Averbakh, Kotov, 5.Be3 e5"
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    "A42k": {
        "eco": "A42k",
        "fen": "r1bqk1nr/ppp2pbp/2np2p1/3Pp3/2P1P3/2N1B3/PP3PPP/R2QKBNR b KQkq - 0 6",
        "hash": "13302195033452938592",
        "name": "Modern: Averbakh, Kotov, 5.Be3 e5 6.d5"
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        "eco": "A42l",
        "fen": "r1bqk1nr/ppp1npbp/3p2p1/3Pp3/2P1P3/2N1B3/PP3PPP/R2QKBNR w KQkq - 1 7",
        "hash": "13579139813036723825",
        "name": "Modern: Averbakh, Kotov, 5.Be3 e5 6.d5 Nce7"
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        "eco": "A42m",
        "fen": "r1bqk1nr/ppp1npbp/3p2p1/3Pp3/2P1P1P1/2N1B3/PP3P1P/R2QKBNR b KQkq g3 0 7",
        "hash": "2251740852493673324",
        "name": "Modern: Averbakh, Kotov, 5.Be3 e5 6.d5 Nce7 7.g4"
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    "A42n": {
        "eco": "A42n",
        "fen": "rnbqk1nr/ppp2pbp/3p2p1/4p3/2PPP3/2N5/PP3PPP/R1BQKBNR w KQkq e6 0 5",
        "hash": "15742266229020208560",
        "name": "Modern: Averbakh, 4...e5"
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    "A42o": {
        "eco": "A42o",
        "fen": "rnbqk1nr/ppp2pbp/3p2p1/4p3/2PPP3/2N5/PP2NPPP/R1BQKB1R b KQkq - 1 5",
        "hash": "14903300077094936654",
        "name": "Modern: Averbakh, 4...e5 5.Nge2"
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        "eco": "A42p",
        "fen": "rnbqk1nr/ppp2pbp/3p2p1/4p3/2PPP3/2N2N2/PP3PPP/R1BQKB1R b KQkq - 1 5",
        "hash": "77457625356618893",
        "name": "Modern: Averbakh, 4...e5 5.Nf3"
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    "A42q": {
        "eco": "A42q",
        "fen": "r1bqk1nr/pppn1pbp/3p2p1/4p3/2PPP3/2N2N2/PP3PPP/R1BQKB1R w KQkq - 2 6",
        "hash": "3670526128905134401",
        "name": "Modern: Averbakh, 4...e5 5.Nf3 Nd7"
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        "eco": "A42r",
        "fen": "r1bqk1nr/pppn1pbp/3p2p1/4p3/2PPP3/2N2N2/PP2BPPP/R1BQK2R b KQkq - 3 6",
        "hash": "4715506201910799330",
        "name": "Modern: Averbakh, 4...e5 5.Nf3 Nd7 6.Be2"
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        "eco": "A42s",
        "fen": "r1bqk2r/pppnnpbp/3p2p1/4p3/2PPP3/2N2N2/PP2BPPP/R1BQK2R w KQkq - 4 7",
        "hash": "9169165381825388639",
        "name": "Modern: Averbakh, 4...e5 5.Nf3 Nd7 6.Be2 Ne7"
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        "fen": "rnbqk1nr/ppp2pbp/3p2p1/3Pp3/2P1P3/2N5/PP3PPP/R1BQKBNR b KQkq - 0 5",
        "hash": "6953418088792865773",
        "name": "Modern: Averbakh, 4...e5 5.d5"
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        "hash": "6024967155616765473",
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        "hash": "5109963765811845824",
        "name": "Modern: Averbakh, 4...e5 5.dxe5"
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        "fen": "rnbk2nr/ppp2pbp/6p1/4p3/2P1PP2/2N5/PP4PP/R1B1KBNR b KQ f3 0 7",
        "hash": "7415764964883366106",
        "name": "Modern: Averbakh, Queenswap, 7.f4"
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        "fen": "rnbqkbnr/pp1ppppp/8/2p5/3P4/8/PPP1PPPP/RNBQKBNR w KQkq c6 0 2",
        "hash": "7313678793504184995",
        "name": "Old Benoni"
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        "eco": "A43b",
        "fen": "rnbqkbnr/pp1ppppp/8/2P5/8/8/PPP1PPPP/RNBQKBNR b KQkq - 0 2",
        "hash": "1917489781839990223",
        "name": "Old Benoni: 2.dxc5"
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        "eco": "A43c",
        "fen": "rnbqkbnr/pp1ppppp/8/2p5/3P4/2P5/PP2PPPP/RNBQKBNR b KQkq - 0 2",
        "hash": "1415696555166389541",
        "name": "Old Benoni: 2.c3"
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        "eco": "A43d",
        "fen": "rnbqkbnr/pp1ppppp/8/2p5/3P4/4P3/PPP2PPP/RNBQKBNR b KQkq - 0 2",
        "hash": "14434646686183739911",
        "name": "Old Benoni: 2.e3"
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        "fen": "rnbqkbnr/pp1ppppp/8/2pP4/8/8/PPP1PPPP/RNBQKBNR b KQkq - 0 2",
        "hash": "16102386612620053758",
        "name": "Old Benoni: 2.d5"
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        "fen": "rnbqkbnr/pp1p1ppp/4p3/2pP4/8/8/PPP1PPPP/RNBQKBNR w KQkq - 0 3",
        "hash": "12177972529630796972",
        "name": "Old Benoni: 2.d5 e6"
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        "fen": "rnbqkbnr/pp1p1ppp/4p3/2pP4/4P3/8/PPP2PPP/RNBQKBNR b KQkq e3 0 3",
        "hash": "7856481405824098726",
        "name": "Old Benoni: Franco-Benoni"
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        "fen": "rnbqkbnr/pp1p1ppp/4p3/2pP4/2P5/8/PP2PPPP/RNBQKBNR b KQkq c3 0 3",
        "hash": "2676059956923627435",
        "name": "Old Benoni: 2.d5 e6 3.c4"
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        "fen": "rnbqkbnr/pp3ppp/3p4/2pP4/8/2N5/PP2PPPP/R1BQKBNR b KQkq - 1 5",
        "hash": "15433988276543121609",
        "name": "Old Benoni: 2.d5 e6 3.c4"
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        "fen": "rnbqkbnr/pp1pp1pp/8/2pP1p2/8/8/PPP1PPPP/RNBQKBNR w KQkq f6 0 3",
        "hash": "5411160537556934944",
        "name": "Old Benoni: Clarendon Court Defence"
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        "eco": "A43k",
        "fen": "rnbqkb1r/pp1ppppp/5n2/2pP4/8/8/PPP1PPPP/RNBQKBNR w KQkq - 1 3",
        "hash": "9554702971602931048",
        "name": "Old Benoni: 2.d5 Nf6"
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        "eco": "A43l",
        "fen": "rnbqkb1r/pp1ppppp/5n2/2pP4/8/5N2/PPP1PPPP/RNBQKB1R b KQkq - 2 3",
        "hash": "6916952113207929941",
        "name": "Old Benoni: 2.d5 Nf6 3.Nf3"
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        "eco": "A43m",
        "fen": "rnbqkb1r/pp1ppp1p/5np1/2pP4/8/5N2/PPP1PPPP/RNBQKB1R w KQkq - 0 4",
        "hash": "13135205812599979550",
        "name": "Old Benoni: 2.d5 Nf6 3.Nf3 g6"
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    "A43n": {
        "eco": "A43n",
        "fen": "rnbqkb1r/p2ppppp/5n2/1ppP4/8/5N2/PPP1PPPP/RNBQKB1R w KQkq b6 0 4",
        "hash": "4609884302187483496",
        "name": "Old Benoni: Neo-Benko"
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    "A43o": {
        "eco": "A43o",
        "fen": "rnbqkb1r/p2ppppp/5n2/1ppP2B1/8/5N2/PPP1PPPP/RN1QKB1R b KQkq - 1 4",
        "hash": "17988448315183860384",
        "name": "Old Benoni: Neo-Benko, 4.Bg5"
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        "eco": "A43p",
        "fen": "rnbqkb1r/p3pppp/3p1n2/1ppP2B1/8/5N2/PPP1PPPP/RN1QKB1R w KQkq - 0 5",
        "hash": "13842191748421010381",
        "name": "Old Benoni: Neo-Benko, 4.Bg5 d6"
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        "eco": "A43q",
        "fen": "rnbqkb1r/p2ppppp/8/1ppP2B1/4n3/5N2/PPP1PPPP/RN1QKB1R w KQkq - 2 5",
        "hash": "14099507026745591642",
        "name": "Old Benoni: Neo-Benko, 4.Bg5 Ne4"
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        "fen": "rnbqkb1r/pp1ppppp/5n2/3P4/2p5/5N2/PPP1PPPP/RNBQKB1R w KQkq - 0 4",
        "hash": "9791469005209978584",
        "name": "Old Benoni: Hawk"
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        "fen": "rnbqkbnr/pp2pppp/3p4/2pP4/8/8/PPP1PPPP/RNBQKBNR w KQkq - 0 3",
        "hash": "16631157007222637971",
        "name": "Old Benoni: Schmidt"
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        "eco": "A43t",
        "fen": "rnbqkbnr/pp2pp1p/3p2p1/2pP4/4P3/8/PPP2PPP/RNBQKBNR w KQkq - 0 4",
        "hash": "14663407288489749202",
        "name": "Old Benoni: Schmidt, 3.e4 g6"
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    "A43u": {
        "eco": "A43u",
        "fen": "rnbqkb1r/pp2pppp/3p1n2/2pP4/4P3/8/PPP2PPP/RNBQKBNR w KQkq - 1 4",
        "hash": "8729247748760271119",
        "name": "Old Benoni: Schmidt, 3.e4 Nf6"
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    "A43v": {
        "eco": "A43v",
        "fen": "rnbqk2r/pp2ppbp/3p1np1/2pP4/4P3/2N2N1P/PPP2PP1/R1BQKB1R b KQkq - 0 6",
        "hash": "16729961756689206008",
        "name": "Old Benoni: Schmidt, 6.h3"
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    "A43w": {
        "eco": "A43w",
        "fen": "rnbqk2r/pp2ppbp/3p1np1/1BpP4/4P3/2N2N2/PPP2PPP/R1BQK2R b KQkq - 3 6",
        "hash": "3675446944175739017",
        "name": "Old Benoni: Schmidt, 6.Bb5+"
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    "A43x": {
        "eco": "A43x",
        "fen": "rnbqk2r/pp2ppbp/3p1np1/2pP4/4P3/2N2N2/PPP1BPPP/R1BQK2R b KQkq - 3 6",
        "hash": "8313536970451192233",
        "name": "Old Benoni: Schmidt, 6.Be2"
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    "A43y": {
        "eco": "A43y",
        "fen": "r1bq1rk1/pp2ppbp/n2p1np1/2pP4/4P3/2N2N2/PPP1BPPP/R1BQ1RK1 w - - 6 8",
        "hash": "5260944065268525038",
        "name": "Old Benoni: Schmidt, 6.Be2 O-O 7.O-O Na6"
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    "A43z": {
        "eco": "A43z",
        "fen": "r1bq1rk1/pp2ppbp/n2p1np1/2pP4/4P3/2N2N1P/PPP1BPP1/R1BQ1RK1 b - - 0 8",
        "hash": "11669246090471042588",
        "name": "Old Benoni: Schmidt, 6.Be2 O-O 7.O-O Na6 8.h3"
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    "A44a": {
        "eco": "A44a",
        "fen": "rnbqkbnr/pp1p1ppp/8/2pPp3/8/8/PPP1PPPP/RNBQKBNR w KQkq e6 0 3",
        "hash": "11114434025341711937",
        "name": "Old Benoni: Czech"
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    "A44b": {
        "eco": "A44b",
        "fen": "rnbqkbnr/pp1p1ppp/4P3/2p5/8/8/PPP1PPPP/RNBQKBNR b KQkq - 0 3",
        "hash": "17320706915067141932",
        "name": "Old Benoni: Czech, 3.dxe6"
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    "A44c": {
        "eco": "A44c",
        "fen": "rnbqkbnr/pp1p1ppp/8/2pPp3/2P5/8/PP2PPPP/RNBQKBNR b KQkq c3 0 3",
        "hash": "15649089658108977103",
        "name": "Old Benoni: Czech, 3.c4"
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    "A44d": {
        "eco": "A44d",
        "fen": "rnbqkbnr/pp3ppp/3p4/2pPp3/2P5/8/PP2PPPP/RNBQKBNR w KQkq - 0 4",
        "hash": "16183168767040902818",
        "name": "Old Benoni: Czech, 3.c4 d6"
    },
    "A44e": {
        "eco": "A44e",
        "fen": "rnbqkbnr/pp3ppp/3p4/2pPp3/2P1P3/8/PP3PPP/RNBQKBNR b KQkq e3 0 4",
        "hash": "2634930174586252200",
        "name": "Old Benoni: Czech, 3.c4 d6 4.e4"
    },
    "A44f": {
        "eco": "A44f",
        "fen": "rnbqk1nr/pp2bppp/3p4/2pPp3/2P1P3/8/PP3PPP/RNBQKBNR w KQkq - 1 5",
        "hash": "3485035038884513593",
        "name": "Old Benoni: Czech, 3.c4 d6 4.e4 Be7"
    },
    "A44g": {
        "eco": "A44g",
        "fen": "rnbqk1nr/pp2bppp/3p4/2pPp3/2P1P3/2N5/PP3PPP/R1BQKBNR b KQkq - 2 5",
        "hash": "14684633396385334752",
        "name": "Old Benoni: Czech, 3.c4 d6 4.e4 Be7 5.Nc3"
    },
    "A44h": {
        "eco": "A44h",
        "fen": "rnbqkbnr/pp3p1p/3p2p1/2pPp3/2P1P3/8/PP3PPP/RNBQKBNR w KQkq - 0 5",
        "hash": "14782349255832271331",
        "name": "Old Benoni: Czech, 3.c4 d6 4.e4 g6"
    },
    "A44i": {
        "eco": "A44i",
        "fen": "rnbqk1nr/pp3pbp/3p2p1/2pPp3/2P1P3/2N5/PP3PPP/R1BQKBNR w KQkq - 2 6",
        "hash": "9659747619529896080",
        "name": "Old Benoni: Czech, 3.c4 d6 4.e4 g6 5.Nc3 Bg7"
    },
    "A44j": {
        "eco": "A44j",
        "fen": "rnbqk1nr/pp3pbp/3p2p1/2pPp3/2P1P3/2N2N2/PP3PPP/R1BQKB1R b KQkq - 3 6",
        "hash": "6731401163698557357",
        "name": "Old Benoni: Czech, 3.c4 d6 4.e4 g6 5.Nc3 Bg7 6.Nf3"
    },
    "A44k": {
        "eco": "A44k",
        "fen": "rnbqk1nr/pp3pbp/3p2p1/2pPp3/2P1P3/2NB4/PP3PPP/R1BQK1NR b KQkq - 3 6",
        "hash": "15205261637356483299",
        "name": "Old Benoni: Czech, 3.c4 d6 4.e4 g6 5.Nc3 Bg7 6.Bd3"
    },
    "A44l": {
        "eco": "A44l",
        "fen": "rnbqkbnr/pp1p1ppp/8/2pPp3/4P3/8/PPP2PPP/RNBQKBNR b KQkq e3 0 3",
        "hash": "10450653843986057666",
        "name": "Old Benoni: Czech, 3.e4"
    },
    "A44m": {
        "eco": "A44m",
        "fen": "rnbqkbnr/pp3ppp/3p4/2pPp3/4P3/8/PPP2PPP/RNBQKBNR w KQkq - 0 4",
        "hash": "12155980846752612527",
        "name": "Old Benoni: Czech, 3.e4 d6"
    },
    "A44n": {
        "eco": "A44n",
        "fen": "rnbqkbnr/pp3ppp/3p4/2pPp3/4P3/5N2/PPP2PPP/RNBQKB1R b KQkq - 1 4",
        "hash": "8346952257404805522",
        "name": "Old Benoni: Czech, 3.e4 d6 4.Nf3"
    },
    "A44o": {
        "eco": "A44o",
        "fen": "rnbqkbnr/pp3ppp/3p4/1BpPp3/4P3/8/PPP2PPP/RNBQK1NR b KQkq - 1 4",
        "hash": "11199442387656037164",
        "name": "Old Benoni: Czech, 3.e4 d6 4.Bb5+"
    },
    "A44p": {
        "eco": "A44p",
        "fen": "rnbqkbnr/pp3ppp/3p4/2pPp3/4P3/3B4/PPP2PPP/RNBQK1NR b KQkq - 1 4",
        "hash": "18284361113894421212",
        "name": "Old Benoni: Czech, 3.e4 d6 4.Bd3"
    },
    "A44q": {
        "eco": "A44q",
        "fen": "rnbqkbnr/pp3ppp/3p4/2pPp3/4P3/2N5/PPP2PPP/R1BQKBNR b KQkq - 1 4",
        "hash": "5991371411196134006",
        "name": "Old Benoni: Czech, 3.e4 d6 4.Nc3"
    },
    "A44r": {
        "eco": "A44r",
        "fen": "rnbqkb1r/pp3ppp/3p1n2/2pPp3/4P3/2N5/PPP2PPP/R1BQKBNR w KQkq - 2 5",
        "hash": "633763431333004256",
        "name": "Old Benoni: Czech, 3.e4 d6 4.Nc3 Nf6"
    },
    "A44s": {
        "eco": "A44s",
        "fen": "rnbqkbnr/pp3p1p/3p2p1/2pPp3/4P3/2N5/PPP2PPP/R1BQKBNR w KQkq - 0 5",
        "hash": "13443794460748632125",
        "name": "Old Benoni: Czech, 3.e4 d6 4.Nc3 g6"
    },
    "A44t": {
        "eco": "A44t",
        "fen": "rnbqkbnr/1p3ppp/p2p4/2pPp3/4P3/2N5/PPP2PPP/R1BQKBNR w KQkq - 0 5",
        "hash": "9354628977322769066",
        "name": "Old Benoni: Czech, 3.e4 d6 4.Nc3 a6"
    },
    "A44u": {
        "eco": "A44u",
        "fen": "rnbqk1nr/1p2bppp/p2p4/2pPp3/P3P3/2N5/1PP2PPP/R1BQKBNR w KQkq - 1 6",
        "hash": "18363247703101424629",
        "name": "Old Benoni: Czech, 3.e4 d6 4.Nc3 a6 5.a4 Be7"
    },
    "A44v": {
        "eco": "A44v",
        "fen": "rnbqk1nr/pp2bppp/3p4/2pPp3/4P3/2N5/PPP2PPP/R1BQKBNR w KQkq - 2 5",
        "hash": "5181905263110483687",
        "name": "Old Benoni: Czech, 3.e4 d6 4.Nc3 Be7"
    },
    "A44w": {
        "eco": "A44w",
        "fen": "rnbqk1nr/pp2bppp/3p4/1BpPp3/4P3/2N5/PPP2PPP/R1BQK1NR b KQkq - 3 5",
        "hash": "8374165118706646372",
        "name": "Old Benoni: Czech, 3.e4 d6 4.Nc3 Be7 5.Bb5+"
    },
    "A44x": {
        "eco": "A44x",
        "fen": "rnbqk1nr/pp2bppp/3p4/2pPp3/4P3/2N2N2/PPP2PPP/R1BQKB1R b KQkq - 3 5",
        "hash": "11280742562283589594",
        "name": "Old Benoni: Czech, 3.e4 d6 4.Nc3 Be7 5.Nf3"
    },
    "A44y": {
        "eco": "A44y",
        "fen": "rn1qk1nr/pp2bppp/3p4/2pPp3/4P1b1/2N2N2/PPP2PPP/R1BQKB1R w KQkq - 4 6",
        "hash": "11411828598782165296",
        "name": "Old Benoni: Czech, 3.e4 d6 4.Nc3 Be7 5.Nf3 Bg4"
    },
    "A45a": {
        "eco": "A45a",
        "fen": "rnbqkb1r/pppppppp/5n2/8/3P4/8/PPP1PPPP/RNBQKBNR w KQkq - 1 2",
        "hash": "15627646045920596040",
        "name": "Queen's Pawn: Indian"
    },
    "A45b": {
        "eco": "A45b",
        "fen": "rnbqkb1r/pppppppp/5n2/8/3P1P2/8/PPP1P1PP/RNBQKBNR b KQkq f3 0 2",
        "hash": "2735638027298909633",
        "name": "Indian: Canard Opening"
    },
    "A45c": {
        "eco": "A45c",
        "fen": "rnbqkb1r/pppppppp/5n2/8/3P4/8/PPPNPPPP/R1BQKBNR b KQkq - 2 2",
        "hash": "9335457511427225720",
        "name": "Indian: 2.Nd2"
    },
    "A45d": {
        "eco": "A45d",
        "fen": "rnbqkb1r/pppppppp/5n2/8/3P4/4P3/PPP2PPP/RNBQKBNR b KQkq - 0 2",
        "hash": "8488669526236141804",
        "name": "Indian: 2.e3"
    },
    "A45e": {
        "eco": "A45e",
        "fen": "rnbqkb1r/pppppppp/5n2/8/3P4/2P5/PP2PPPP/RNBQKBNR b KQkq - 0 2",
        "hash": "12554476513947459534",
        "name": "Indian: 2.c3"
    },
    "A45f": {
        "eco": "A45f",
        "fen": "rnbqkb1r/pppppppp/5n2/8/3P4/2N5/PPP1PPPP/R1BQKBNR b KQkq - 2 2",
        "hash": "2555676126085124753",
        "name": "Indian: 2.Nc3"
    },
    "A45g": {
        "eco": "A45g",
        "fen": "rnbqkb1r/pppppppp/5n2/8/3P1B2/8/PPP1PPPP/RN1QKBNR b KQkq - 2 2",
        "hash": "266956776937781803",
        "name": "Indian: 2.Bf4"
    },
    "A45h": {
        "eco": "A45h",
        "fen": "rnbqkb1r/pppppppp/5n2/8/3P4/6P1/PPP1PP1P/RNBQKBNR b KQkq - 0 2",
        "hash": "17583801195761584240",
        "name": "Indian: 2.g3"
    },
    "A45i": {
        "eco": "A45i",
        "fen": "rnbqkb1r/pp1ppppp/5n2/2p5/3P4/6P1/PPP1PP1P/RNBQKBNR w KQkq c6 0 3",
        "hash": "1330786926691762957",
        "name": "Indian: 2.g3 c5"
    },
    "A45j": {
        "eco": "A45j",
        "fen": "rnbqkb1r/pppppppp/5n2/6B1/3P4/8/PPP1PPPP/RN1QKBNR b KQkq - 2 2",
        "hash": "2214322346111028096",
        "name": "Trompowsky Opening"
    },
    "A45k": {
        "eco": "A45k",
        "fen": "rnbqkb1r/pppppp1p/5np1/6B1/3P4/8/PPP1PPPP/RN1QKBNR w KQkq - 0 3",
        "hash": "17802317192162171339",
        "name": "Trompowsky 2...g6"
    },
    "A45l": {
        "eco": "A45l",
        "fen": "rnbqkb1r/pppp1p1p/5pp1/8/3P4/4P3/PPP2PPP/RN1QKBNR b KQkq - 0 4",
        "hash": "5653673052685366433",
        "name": "Trompowsky 2...g6 3.Bxf6 exf6 4.e3"
    },
    "A45m": {
        "eco": "A45m",
        "fen": "rnbqkb1r/pppp1ppp/4pn2/6B1/3P4/8/PPP1PPPP/RN1QKBNR w KQkq - 0 3",
        "hash": "7551736405547473874",
        "name": "Trompowsky: 2...e6"
    },
    "A45n": {
        "eco": "A45n",
        "fen": "rnbqkb1r/pppp1ppp/4pn2/6B1/3PP3/8/PPP2PPP/RN1QKBNR b KQkq e3 0 3",
        "hash": "12450804840027285208",
        "name": "Trompowsky: 2...e6 3.e4"
    },
    "A45o": {
        "eco": "A45o",
        "fen": "rnb1kb1r/pppp1pp1/4pq1p/8/3PP3/2N5/PPP2PPP/R2QKBNR b KQkq - 1 5",
        "hash": "7938788449725956980",
        "name": "Trompowsky: 2...e6 3.e4 h6 4.Bxf6 Qxf6 5.Nc3"
    },
    "A45p": {
        "eco": "A45p",
        "fen": "rnbqkb1r/pp1ppppp/5n2/2p3B1/3P4/8/PPP1PPPP/RN1QKBNR w KQkq c6 0 3",
        "hash": "17927435797933277437",
        "name": "Trompowsky: 2...c5"
    },
    "A45q": {
        "eco": "A45q",
        "fen": "rnbqkb1r/pp1ppppp/5B2/2p5/3P4/8/PPP1PPPP/RN1QKBNR b KQkq - 0 3",
        "hash": "6770038400045096477",
        "name": "Trompowsky: 2...c5 3.Bxf6"
    },
    "A45r": {
        "eco": "A45r",
        "fen": "rnb1kb1r/pp1ppp1p/1q3p2/2pP4/8/8/PPP1PPPP/RN1QKBNR w KQkq - 1 5",
        "hash": "14798592860506242931",
        "name": "Trompowsky: 2...c5 3.Bxf6 gxf6 4.d5 Qb6"
    },
    "A45s": {
        "eco": "A45s",
        "fen": "rnbqkb1r/pppppppp/8/6B1/3Pn3/8/PPP1PPPP/RN1QKBNR w KQkq - 3 3",
        "hash": "2644341882991265402",
        "name": "Trompowsky: 2...Ne4"
    },
    "A45t": {
        "eco": "A45t",
        "fen": "rnbqkb1r/pppppppp/8/8/3Pn2B/8/PPP1PPPP/RN1QKBNR b KQkq - 4 3",
        "hash": "9096706293126653153",
        "name": "Trompowsky: 2...Ne4 3.Bh4"
    },
    "A45u": {
        "eco": "A45u",
        "fen": "rnbqkb1r/pppppppp/8/8/3PnB2/8/PPP1PPPP/RN1QKBNR b KQkq - 4 3",
        "hash": "13936954140823155416",
        "name": "Trompowsky: 2...Ne4 3.Bf4"
    },
    "A45v": {
        "eco": "A45v",
        "fen": "rnbqkb1r/ppp1pppp/8/3p4/3PnB2/5P2/PPP1P1PP/RN1QKBNR b KQkq - 0 4",
        "hash": "3076457543698142095",
        "name": "Trompowsky: 2...Ne4 3.Bf4 d5 4.f3"
    },
    "A45w": {
        "eco": "A45w",
        "fen": "rnbqkb1r/ppp1pppp/8/3p4/3PnB2/4P3/PPP2PPP/RN1QKBNR b KQkq - 0 4",
        "hash": "16802192805008487514",
        "name": "Trompowsky: 2...Ne4 3.Bf4 d5 4.e3"
    },
    "A45x": {
        "eco": "A45x",
        "fen": "rnbqkb1r/pp1ppppp/8/2p5/3PnB2/8/PPP1PPPP/RN1QKBNR w KQkq c6 0 4",
        "hash": "2818075093222783397",
        "name": "Trompowsky: 2...Ne4 3.Bf4 c5"
    },
    "A45y": {
        "eco": "A45y",
        "fen": "rnbqkb1r/pp1ppppp/8/2p5/3PnB2/5P2/PPP1P1PP/RN1QKBNR b KQkq - 0 4",
        "hash": "5308114950191945428",
        "name": "Trompowsky: 2...Ne4 3.Bf4 c5 4.f3"
    },
    "A45z": {
        "eco": "A45z",
        "fen": "rnb1kb1r/pp1ppppp/5n2/q1p5/3P1B2/2P2P2/PP1NP1PP/R2QKBNR b KQkq - 2 6",
        "hash": "9612281746961177879",
        "name": "Trompowsky: 2...Ne4 3.Bf4 c5 4.f3 Qa5+ 5.c3 Nf6 6.Nd2"
    },
    "A46a": {
        "eco": "A46a",
        "fen": "rnbqkb1r/pppppppp/5n2/8/3P4/5N2/PPP1PPPP/RNBQKB1R b KQkq - 2 2",
        "hash": "253434895135994229",
        "name": "Indian: 2.Nf3"
    },
    "A46b": {
        "eco": "A46b",
        "fen": "rnbqkb1r/p1pppppp/5n2/1p6/3P4/5N2/PPP1PPPP/RNBQKB1R w KQkq b6 0 3",
        "hash": "7169743407284833352",
        "name": "Indian: 2.Nf3 b5"
    },
    "A46c": {
        "eco": "A46c",
        "fen": "rnbqkb1r/pp1ppppp/5n2/2p5/3P4/5N2/PPP1PPPP/RNBQKB1R w KQkq c6 0 3",
        "hash": "16570344052193753608",
        "name": "Neo-Benoni"
    },
    "A46d": {
        "eco": "A46d",
        "fen": "rnbqkb1r/pp1ppppp/5n2/2p5/3P4/2P2N2/PP2PPPP/RNBQKB1R b KQkq - 0 3",
        "hash": "10605775396122391950",
        "name": "Neo-Benoni: 3.c3"
    },
    "A46e": {
        "eco": "A46e",
        "fen": "rnbqkb1r/pp1p1ppp/4pn2/2p5/3P4/2P2N2/PP2PPPP/RNBQKB1R w KQkq - 0 4",
        "hash": "16526164127598601692",
        "name": "Neo-Benoni: 3.c3 e6"
    },
    "A46f": {
        "eco": "A46f",
        "fen": "rnbqkb1r/pp1ppppp/5n2/2p5/3P4/5NP1/PPP1PP1P/RNBQKB1R b KQkq - 0 3",
        "hash": "14488936928257516080",
        "name": "Neo-Benoni: 3.g3"
    },
    "A46g": {
        "eco": "A46g",
        "fen": "rnbqkb1r/ppp1pppp/3p1n2/8/3P4/5N2/PPP1PPPP/RNBQKB1R w KQkq - 0 3",
        "hash": "4197064375753553944",
        "name": "Indian: 2.Nf3 d6"
    },
    "A46h": {
        "eco": "A46h",
        "fen": "rnbqkb1r/ppp1pppp/3p1n2/8/3P4/5NP1/PPP1PP1P/RNBQKB1R b KQkq - 0 3",
        "hash": "1646149853499842592",
        "name": "Indian: 2.Nf3 d6 3.g3"
    },
    "A46i": {
        "eco": "A46i",
        "fen": "rnbqkb1r/ppp1pppp/3p1n2/6B1/3P4/5N2/PPP1PPPP/RN1QKB1R b KQkq - 1 3",
        "hash": "18186838107628135376",
        "name": "Indian: 2.Nf3 d6 3.Bg5"
    },
    "A46j": {
        "eco": "A46j",
        "fen": "rnbqkb1r/pppp1ppp/4pn2/8/3P4/5N2/PPP1PPPP/RNBQKB1R w KQkq - 0 3",
        "hash": "8499299103407497511",
        "name": "Indian: 2.Nf3 e6"
    },
    "A46k": {
        "eco": "A46k",
        "fen": "rnbqkb1r/pppp1ppp/4pn2/8/3P4/4PN2/PPP2PPP/RNBQKB1R b KQkq - 0 3",
        "hash": "15627157773965977987",
        "name": "Indian: 1.d4 Nf6 2.Nf3 e6 3.e3"
    },
    "A46l": {
        "eco": "A46l",
        "fen": "rnbqkb1r/pp1p1ppp/4pn2/2p5/3P4/3BPN2/PPP2PPP/RNBQK2R b KQkq - 1 4",
        "hash": "7755938796901638285",
        "name": "Indian: 1.d4 Nf6 2.Nf3 e6 3.e3 c5 4.Bd3"
    },
    "A46m": {
        "eco": "A46m",
        "fen": "rnbqkb1r/pppp1ppp/4pn2/8/3P4/5NP1/PPP1PP1P/RNBQKB1R b KQkq - 0 3",
        "hash": "6419081654265035039",
        "name": "Indian: 1.d4 Nf6 2.Nf3 e6 3.g3"
    },
    "A46n": {
        "eco": "A46n",
        "fen": "rn1qkb1r/pbpp1ppp/4pn2/1p6/3P4/5NP1/PPP1PPBP/RNBQ1RK1 b kq - 3 5",
        "hash": "4757017377534683344",
        "name": "Indian: 1.d4 Nf6 2.Nf3 e6 3.g3 b5 4.Bg2 Bb7 5.O-O"
    },
    "A46o": {
        "eco": "A46o",
        "fen": "rnbqkb1r/pp1p1ppp/4pn2/2p5/3P4/5NP1/PPP1PP1P/RNBQKB1R w KQkq c6 0 4",
        "hash": "13791422217373266530",
        "name": "Indian: 1.d4 Nf6 2.Nf3 e6 3.g3 c5"
    },
    "A46p": {
        "eco": "A46p",
        "fen": "rnbqkb1r/pppp1ppp/4pn2/8/3P1B2/5N2/PPP1PPPP/RN1QKB1R b KQkq - 1 3",
        "hash": "12585156331990059844",
        "name": "Indian: London System"
    },
    "A46q": {
        "eco": "A46q",
        "fen": "rnbqkb1r/pp1p1ppp/4pn2/2p5/3P1B2/2P2N2/PP2PPPP/RN1QKB1R b KQkq - 0 4",
        "hash": "4471049923180203967",
        "name": "Indian: London, 3...c5 4.c3"
    },
    "A46r": {
        "eco": "A46r",
        "fen": "rnbqkb1r/pppp1ppp/4pn2/6B1/3P4/5N2/PPP1PPPP/RN1QKB1R b KQkq - 1 3",
        "hash": "12946094891610192623",
        "name": "Torre Attack"
    },
    "A46s": {
        "eco": "A46s",
        "fen": "rnbqkb1r/pp1p1ppp/4pn2/2p3B1/3P4/5N2/PPP1PPPP/RN1QKB1R w KQkq c6 0 4",
        "hash": "6185717283527831954",
        "name": "Torre Attack: 3...c5"
    },
    "A46t": {
        "eco": "A46t",
        "fen": "rnbqkb1r/pp1p1ppp/4pn2/2p3B1/3P4/2P2N2/PP2PPPP/RN1QKB1R b KQkq - 0 4",
        "hash": "2522839876464524820",
        "name": "Torre Attack: 3...c5 4.c3"
    },
    "A46u": {
        "eco": "A46u",
        "fen": "rnbqkb1r/pp1p1ppp/4pn2/2p3B1/3P4/4PN2/PPP2PPP/RN1QKB1R b KQkq - 0 4",
        "hash": "17939341081341868342",
        "name": "Torre Attack: 3...c5 4.e3"
    },
    "A46v": {
        "eco": "A46v",
        "fen": "rnbqk2r/pp1pbppp/4pn2/2p3B1/3P4/4PN2/PPP2PPP/RN1QKB1R w KQkq - 1 5",
        "hash": "17021676147464705447",
        "name": "Torre Attack: 3...c5 4.e3 Be7"
    },
    "A46w": {
        "eco": "A46w",
        "fen": "rnbqkb1r/pp1p1pp1/4pn1p/2p3B1/3P4/4PN2/PPP2PPP/RN1QKB1R w KQkq - 0 5",
        "hash": "7638699581112348707",
        "name": "Torre Attack: 3...c5 4.e3 h6"
    },
    "A46x": {
        "eco": "A46x",
        "fen": "rnbqkb1r/pppp1pp1/4pn1p/6B1/3P4/5N2/PPP1PPPP/RN1QKB1R w KQkq - 0 4",
        "hash": "2404517378826761210",
        "name": "Torre Attack: 3...h6"
    },
    "A46y": {
        "eco": "A46y",
        "fen": "rnbqkb1r/pppp1pp1/4pB1p/8/3P4/5N2/PPP1PPPP/RN1QKB1R b KQkq - 0 4",
        "hash": "9539052825240579354",
        "name": "Torre Attack: 3...h6 4.Bxf6"
    },
    "A46z": {
        "eco": "A46z",
        "fen": "rnb1kb1r/ppp2pp1/3ppq1p/8/3PP3/5N2/PPP2PPP/RN1QKB1R w KQkq - 0 6",
        "hash": "8603384084193831421",
        "name": "Torre Attack: 3...h6 4.Bxf6 Qxf6 5.e4 d6"
    },
    "A47": {
        "eco": "A47",
        "fen": "rnbqkb1r/p1pppppp/1p3n2/8/3P4/5N2/PPP1PPPP/RNBQKB1R w KQkq - 0 3",
        "hash": "7560744022399469294",
        "name": "Neo-Queen's Indian"
    },
    "A48a": {
        "eco": "A48a",
        "fen": "rnbqkb1r/pppppp1p/5np1/8/3P4/5N2/PPP1PPPP/RNBQKB1R w KQkq - 0 3",
        "hash": "16875043787478098750",
        "name": "Neo-King's Indian"
    },
    "A48b": {
        "eco": "A48b",
        "fen": "rnbqkb1r/pppppp1p/5np1/8/3P4/2P2N2/PP2PPPP/RNBQKB1R b KQkq - 0 3",
        "hash": "11307072407216024760",
        "name": "Neo-King's Indian"
    },
    "A48c": {
        "eco": "A48c",
        "fen": "rnbqkb1r/pppppp1p/5np1/8/3P4/4PN2/PPP2PPP/RNBQKB1R b KQkq - 0 3",
        "hash": "5124375476920707994",
        "name": "Neo-King's Indian"
    },
    "A48d": {
        "eco": "A48d",
        "fen": "rnbqkb1r/pp1ppp1p/5np1/2p5/3P4/4PN2/PPP2PPP/RNBQKB1R w KQkq c6 0 4",
        "hash": "11631850017183228135",
        "name": "Neo-King's Indian"
    },
    "A48e": {
        "eco": "A48e",
        "fen": "rnbqkb1r/pppppp1p/5np1/8/3P4/2N2N2/PPP1PPPP/R1BQKB1R b KQkq - 1 3",
        "hash": "1272031910547808743",
        "name": "Neo-King's Indian"
    },
    "A48f": {
        "eco": "A48f",
        "fen": "rnbqkb1r/pppppp1p/5np1/8/3P1B2/5N2/PPP1PPPP/RN1QKB1R b KQkq - 1 3",
        "hash": "3559203162104236381",
        "name": "Neo-King's Indian: London System"
    },
    "A48g": {
        "eco": "A48g",
        "fen": "rnbqk2r/ppppppbp/5np1/8/3P1B2/5N2/PPP1PPPP/RN1QKB1R w KQkq - 2 4",
        "hash": "9356485364948943607",
        "name": "Neo-King's Indian: London System"
    },
    "A48h": {
        "eco": "A48h",
        "fen": "rnbqk2r/ppppppbp/5np1/8/3P1B2/5N2/PPPNPPPP/R2QKB1R b KQkq - 3 4",
        "hash": "15615758639826070215",
        "name": "Neo-King's Indian: London System"
    },
    "A48i": {
        "eco": "A48i",
        "fen": "rnbqk2r/ppppppbp/5np1/8/3P1B2/2P2N2/PP2PPPP/RN1QKB1R b KQkq - 0 4",
        "hash": "17798807665566829937",
        "name": "Neo-King's Indian: London System"
    },
    "A48j": {
        "eco": "A48j",
        "fen": "rnbqk2r/ppppppbp/5np1/8/3P1B2/4PN2/PPP2PPP/RN1QKB1R b KQkq - 0 4",
        "hash": "3239684004482632275",
        "name": "Neo-King's Indian: London System"
    },
    "A48k": {
        "eco": "A48k",
        "fen": "rnbq1rk1/ppppppbp/5np1/8/3P1B2/4PN2/PPP1BPPP/RN1QK2R b KQ - 2 5",
        "hash": "6187318209336535323",
        "name": "Neo-King's Indian: London System"
    },
    "A48l": {
        "eco": "A48l",
        "fen": "rnbq1rk1/ppp1ppbp/3p1np1/8/3P1B2/4PN1P/PPP1BPP1/RN1QK2R b KQ - 0 6",
        "hash": "9553417932123728260",
        "name": "Neo-King's Indian: London System"
    },
    "A48m": {
        "eco": "A48m",
        "fen": "rnbqkb1r/pppppp1p/5np1/6B1/3P4/5N2/PPP1PPPP/RN1QKB1R b KQkq - 1 3",
        "hash": "3200482480922671350",
        "name": "Neo-King's Indian: Torre Attack"
    },
    "A48n": {
        "eco": "A48n",
        "fen": "rnbqkb1r/pppppp1p/6p1/6B1/3Pn3/5N2/PPP1PPPP/RN1QKB1R w KQkq - 2 4",
        "hash": "1612896987429483788",
        "name": "Neo-King's Indian: Torre Attack"
    },
    "A48o": {
        "eco": "A48o",
        "fen": "rnbqk2r/ppppppbp/5np1/6B1/3P4/5N2/PPP1PPPP/RN1QKB1R w KQkq - 2 4",
        "hash": "11301317531283125084",
        "name": "Neo-King's Indian: Torre Attack"
    },
    "A48p": {
        "eco": "A48p",
        "fen": "rnbqk2r/ppppppbp/5np1/6B1/3P4/2N2N2/PPP1PPPP/R2QKB1R b KQkq - 3 4",
        "hash": "7440299287950717317",
        "name": "Neo-King's Indian: Torre Attack"
    },
    "A48q": {
        "eco": "A48q",
        "fen": "rnbqk2r/ppppppbp/5np1/6B1/3P4/5N2/PPPNPPPP/R2QKB1R b KQkq - 3 4",
        "hash": "14247383747912260460",
        "name": "Neo-King's Indian: Torre Attack"
    },
    "A48r": {
        "eco": "A48r",
        "fen": "rnbq1rk1/ppppppbp/5np1/6B1/3P4/5N2/PPPNPPPP/R2QKB1R w KQ - 4 5",
        "hash": "14920440682649891463",
        "name": "Neo-King's Indian: Torre Attack"
    },
    "A48s": {
        "eco": "A48s",
        "fen": "rnbq1rk1/ppppppbp/5np1/6B1/3PP3/5N2/PPPN1PPP/R2QKB1R b KQ e3 0 5",
        "hash": "799108521183580045",
        "name": "Neo-King's Indian: Torre Attack"
    },
    "A48t": {
        "eco": "A48t",
        "fen": "rnbq1rk1/ppp1ppbp/3p1np1/6B1/3PP3/5N2/PPPN1PPP/R2QKB1R w KQ - 0 6",
        "hash": "3651740446077142752",
        "name": "Neo-King's Indian: Torre Attack"
    },
    "A48u": {
        "eco": "A48u",
        "fen": "rnbq1rk1/ppp1ppbp/5np1/3p2B1/3PP3/5N2/PPPN1PPP/R2QKB1R w KQ d6 0 6",
        "hash": "10267401087232688555",
        "name": "Neo-King's Indian: Torre Attack"
    },
    "A48v": {
        "eco": "A48v",
        "fen": "rnbq1rk1/ppppppbp/5np1/6B1/3P4/2P2N2/PP1NPPPP/R2QKB1R b KQ - 0 5",
        "hash": "13387782392007245057",
        "name": "Neo-King's Indian: Torre Attack"
    },
    "A48w": {
        "eco": "A48w",
        "fen": "rnbq1rk1/ppp1ppbp/3p1np1/6B1/3PP3/2P2N2/PP1N1PPP/R2QKB1R b KQ e3 0 6",
        "hash": "4933532924628355430",
        "name": "Neo-King's Indian: Torre Attack"
    },
    "A48x": {
        "eco": "A48x",
        "fen": "rnbq1rk1/pp2ppbp/3p1np1/2p3B1/3PP3/2P2N2/PP1N1PPP/R2QKB1R w KQ c6 0 7",
        "hash": "11675229780796359195",
        "name": "Neo-King's Indian: Torre Attack"
    },
    "A49": {
        "eco": "A49",
        "fen": "rnbqkb1r/pppppp1p/5np1/8/3P4/5NP1/PPP1PP1P/RNBQKB1R b KQkq - 0 3",
        "hash": "14327790633553279750",
        "name": "Neo-King's Indian: Fianchetto System"
    },
    "A50a": {
        "eco": "A50a",
        "fen": "rnbqkb1r/pppppppp/5n2/8/2PP4/8/PP2PPPP/RNBQKBNR b KQkq c3 0 2",
        "hash": "6107745739976031055",
        "name": "Indian: 2.c4"
    },
    "A50b": {
        "eco": "A50b",
        "fen": "r1bqkb1r/pppppppp/2n2n2/8/2PP4/8/PP2PPPP/RNBQKBNR w KQkq - 1 3",
        "hash": "18387856988164628044",
        "name": "Indian: Mexican Defence (Two Knights Tango)"
    },
    "A50c": {
        "eco": "A50c",
        "fen": "r1bqkb1r/pppppppp/2n2n2/8/2PP4/2N5/PP2PPPP/R1BQKBNR b KQkq - 2 3",
        "hash": "340534295596506261",
        "name": "Indian: Mexican Defence, 3.Nc3"
    },
    "A50d": {
        "eco": "A50d",
        "fen": "r1bqkb1r/pppppppp/2n2n2/8/2PP4/5N2/PP2PPPP/RNBQKB1R b KQkq - 2 3",
        "hash": "2614944828615229297",
        "name": "Indian: Mexican Defence, 3.Nf3"
    },
    "A50e": {
        "eco": "A50e",
        "fen": "r1bqkb1r/pppp1ppp/2n1pn2/8/2PP4/5N2/PP2PPPP/RNBQKB1R w KQkq - 0 4",
        "hash": "5926126084100222755",
        "name": "Indian: Mexican Defence, 3.Nf3 e6"
    },
    "A50f": {
        "eco": "A50f",
        "fen": "r1bqkb1r/pppp1ppp/2n1pn2/8/2PP4/P4N2/1P2PPPP/RNBQKB1R b KQkq - 0 4",
        "hash": "11070381562782867811",
        "name": "Indian: Mexican Defence, 3.Nf3 e6 4.a3"
    },
    "A50g": {
        "eco": "A50g",
        "fen": "r1bqkb1r/pppp1ppp/2n1pn2/8/2PP4/2N2N2/PP2PPPP/R1BQKB1R b KQkq - 1 4",
        "hash": "12225809419318521338",
        "name": "Indian: Mexican Defence, 3.Nf3 e6 4.Nc3"
    },
    "A50h": {
        "eco": "A50h",
        "fen": "rnbqkb1r/pp1ppppp/2p2n2/8/2PP4/8/PP2PPPP/RNBQKBNR w KQkq - 0 3",
        "hash": "14319757469619710196",
        "name": "Indian: Slav-Indian"
    },
    "A50i": {
        "eco": "A50i",
        "fen": "rnbqkb1r/pp1ppppp/2p2n2/8/2PP4/5N2/PP2PPPP/RNBQKB1R b KQkq - 1 3",
        "hash": "2151897615796242889",
        "name": "Indian: Slav-Indian, 3.Nf3"
    },
    "A50j": {
        "eco": "A50j",
        "fen": "rnbqkb1r/pp1ppppp/2p2n2/8/2PP4/2N5/PP2PPPP/R1BQKBNR b KQkq - 1 3",
        "hash": "4408715271549708845",
        "name": "Indian: Slav-Indian, 3.Nc3"
    },
    "A50k": {
        "eco": "A50k",
        "fen": "rnbqkb1r/1ppppppp/p4n2/8/2PP4/8/PP2PPPP/RNBQKBNR w KQkq - 0 3",
        "hash": "9670604507730264979",
        "name": "Indian: 2.c4 a6"
    },
    "A50l": {
        "eco": "A50l",
        "fen": "rnbqkb1r/p1pppppp/1p3n2/8/2PP4/8/PP2PPPP/RNBQKBNR w KQkq - 0 3",
        "hash": "4587579720298564820",
        "name": "Indian: Queen's Indian Accelerated"
    },
    "A50m": {
        "eco": "A50m",
        "fen": "rn1qkb1r/pbpppppp/1p3n2/8/2PP4/2N5/PP2PPPP/R1BQKBNR w KQkq - 2 4",
        "hash": "8407388541882900886",
        "name": "Indian: Queen's Indian Accelerated"
    },
    "A50n": {
        "eco": "A50n",
        "fen": "rn1qkb1r/pbpppppp/1p3n2/8/2PP4/2N5/PPQ1PPPP/R1B1KBNR b KQkq - 3 4",
        "hash": "14246144874465762802",
        "name": "Indian: Queen's Indian Accelerated"
    },
    "A51a": {
        "eco": "A51a",
        "fen": "rnbqkb1r/pppp1ppp/5n2/4p3/2PP4/8/PP2PPPP/RNBQKBNR w KQkq e6 0 3",
        "hash": "16049450462512464761",
        "name": "Budapest"
    },
    "A51b": {
        "eco": "A51b",
        "fen": "rnbqkb1r/pppp1ppp/5n2/4p3/2PP4/4P3/PP3PPP/RNBQKBNR b KQkq - 0 3",
        "hash": "8328941985190071261",
        "name": "Budapest: 3.e3"
    },
    "A51c": {
        "eco": "A51c",
        "fen": "rnbqkb1r/pppp1ppp/5n2/3Pp3/2P5/8/PP2PPPP/RNBQKBNR b KQkq - 0 3",
        "hash": "7256241808960541988",
        "name": "Budapest: 3.d5"
    },
    "A51d": {
        "eco": "A51d",
        "fen": "rnbqkb1r/pppp1ppp/5n2/4P3/2P5/8/PP2PPPP/RNBQKBNR b KQkq - 0 3",
        "hash": "4766749505263334409",
        "name": "Budapest: 3.dxe5"
    },
    "A51e": {
        "eco": "A51e",
        "fen": "rnbqkb1r/pppp1ppp/8/4P3/2P1n3/8/PPQ1PPPP/RNB1KBNR b KQkq - 2 4",
        "hash": "14499299322654541207",
        "name": "Budapest: Fajarowicz, Steiner Variation"
    },
    "A51f": {
        "eco": "A51f",
        "fen": "rnbqkb1r/pppp1ppp/8/4P3/2P1n3/8/PP1NPPPP/R1BQKBNR b KQkq - 2 4",
        "hash": "2395934339227013571",
        "name": "Budapest: Fajarowicz, 4.Nd2"
    },
    "A51g": {
        "eco": "A51g",
        "fen": "rnbqkb1r/pppp1ppp/8/4P3/2P1n3/P7/1P2PPPP/RNBQKBNR b KQkq - 0 4",
        "hash": "12948579908660524979",
        "name": "Budapest: Fajarowicz, 4.a3"
    },
    "A51h": {
        "eco": "A51h",
        "fen": "rnbqkb1r/pppp1ppp/8/4P3/2P1n3/5N2/PP2PPPP/RNBQKB1R b KQkq - 2 4",
        "hash": "11766292854183467214",
        "name": "Budapest: Fajarowicz, 4.Nf3"
    },
    "A51i": {
        "eco": "A51i",
        "fen": "rnbqk2r/pppp1ppp/8/4P3/1bP1n3/5N2/PP2PPPP/RNBQKB1R w KQkq - 3 5",
        "hash": "7641249592266543340",
        "name": "Budapest: Fajarowicz, 4.Nf3 Bb4+"
    },
    "A51j": {
        "eco": "A51j",
        "fen": "r1bqkb1r/pppp1ppp/2n5/4P3/2P1n3/5N2/PP2PPPP/RNBQKB1R w KQkq - 3 5",
        "hash": "623640661920529869",
        "name": "Budapest: Fajarowicz, 4.Nf3 Nc6"
    },
    "A51k": {
        "eco": "A51k",
        "fen": "r1bqkb1r/pppp1ppp/2n5/4P3/2P1n3/P4N2/1P2PPPP/RNBQKB1R b KQkq - 0 5",
        "hash": "14068027831452939149",
        "name": "Budapest: Fajarowicz, 4.Nf3 Nc6 5.a3"
    },
    "A52a": {
        "eco": "A52a",
        "fen": "rnbqkb1r/pppp1ppp/8/4P3/2P3n1/8/PP2PPPP/RNBQKBNR w KQkq - 1 4",
        "hash": "16070459810519704933",
        "name": "Budapest: 3...Ng4"
    },
    "A52b": {
        "eco": "A52b",
        "fen": "rnbqkb1r/pppp1ppp/8/4P3/2P3n1/4P3/PP3PPP/RNBQKBNR b KQkq - 0 4",
        "hash": "8226102618194734529",
        "name": "Budapest: 3...Ng4 4.e3"
    },
    "A52c": {
        "eco": "A52c",
        "fen": "rnbqkb1r/pppp1ppp/8/4P3/2P1P1n1/8/PP3PPP/RNBQKBNR b KQkq e3 0 4",
        "hash": "1946315100406634607",
        "name": "Budapest: Alekhine Variation"
    },
    "A52d": {
        "eco": "A52d",
        "fen": "rnbqkb1r/pppp1ppp/2n5/8/2P1PP2/8/PP4PP/RNBQKBNR w KQkq - 1 6",
        "hash": "319201036411485236",
        "name": "Budapest: Alekhine, Abonyi Variation"
    },
    "A52e": {
        "eco": "A52e",
        "fen": "rnbqkb1r/pppp1ppp/8/4P3/2P3n1/5N2/PP2PPPP/RNBQKB1R b KQkq - 2 4",
        "hash": "315624687282521176",
        "name": "Budapest: Adler Variation"
    },
    "A52f": {
        "eco": "A52f",
        "fen": "rnbqk2r/pppp1ppp/8/2b1P3/2P3n1/5N2/PP2PPPP/RNBQKB1R w KQkq - 3 5",
        "hash": "12212661169695190747",
        "name": "Budapest: Adler, 4...Bc5"
    },
    "A52g": {
        "eco": "A52g",
        "fen": "r1bqk2r/pppp1ppp/2n5/2b1P3/2P3n1/4PN2/PP2BPPP/RNBQK2R b KQkq - 2 6",
        "hash": "15869575722185525727",
        "name": "Budapest: Adler, 4...Bc5 5.e3 Nc6 6.Be2"
    },
    "A52h": {
        "eco": "A52h",
        "fen": "rnbqkb1r/pppp1ppp/8/4P3/2P2Bn1/8/PP2PPPP/RN1QKBNR b KQkq - 2 4",
        "hash": "311127211448405766",
        "name": "Budapest: Rubinstein Variation"
    },
    "A52i": {
        "eco": "A52i",
        "fen": "rnbqk2r/pppp1ppp/8/4P3/1bP2Bn1/8/PP2PPPP/RN1QKBNR w KQkq - 3 5",
        "hash": "14776364849090840356",
        "name": "Budapest: Rubinstein, 4...Bb4+"
    },
    "A52j": {
        "eco": "A52j",
        "fen": "r1bqkb1r/pppp1ppp/2n5/4P3/2P2Bn1/8/PP2PPPP/RN1QKBNR w KQkq - 3 5",
        "hash": "12663137466350742021",
        "name": "Budapest: Rubinstein, 4...Nc6"
    },
    "A52k": {
        "eco": "A52k",
        "fen": "r1bqk2r/pppp1ppp/2n5/4P3/1bP2Bn1/5N2/PP2PPPP/RN1QKB1R w KQkq - 5 6",
        "hash": "13661957124338942746",
        "name": "Budapest: Rubinstein, Main Line"
    },
    "A52l": {
        "eco": "A52l",
        "fen": "r1bqk2r/pppp1ppp/2n5/4P3/1bP2Bn1/5N2/PP1NPPPP/R2QKB1R b KQkq - 6 6",
        "hash": "16498864651235928874",
        "name": "Budapest: Rubinstein, Main Line, 6.Nbd2"
    },
    "A52m": {
        "eco": "A52m",
        "fen": "r1b1k2r/ppppqppp/2n5/4P3/1bP2Bn1/4PN2/PP1N1PPP/R2QKB1R b KQkq - 0 7",
        "hash": "15142544775636946404",
        "name": "Budapest: Rubinstein, Main Line, 6.Nbd2 Qe7 7.e3"
    },
    "A53": {
        "eco": "A53",
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        "hash": "7888481367444779554",
        "name": "Old Indian"
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        "hash": "14407710219603044848",
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        "hash": "11703980110739466893",
        "name": "Old Indian: 5.e4 c6"
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        "name": "Old Indian: 5.e4 Be7"
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        "name": "Old Indian: 5.e4 Be7 6.g3"
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        "hash": "5132513640629899556",
        "name": "Old Indian: 5.e4 Be7 6.g3 c6 7.Bg2 O-O 8.O-O Re8"
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        "name": "Old Indian: 5.e4 Be7 6.Be2"
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        "hash": "14204375149281676479",
        "name": "Old Indian: 5.e4 Be7 6.Be2 c6"
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        "name": "Old Indian: Main Line"
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        "hash": "1153712519385373974",
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        "hash": "15137450047812074236",
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        "hash": "3839754057183958352",
        "name": "Old Indian: Main Line, 8.Re1"
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        "hash": "2961201110991270098",
        "name": "Old Indian: Main Line, 8.Re1 Re8"
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        "hash": "16698918658087349644",
        "name": "Old Indian: Main Line, 8.Re1 a6"
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        "hash": "10682250186049529647",
        "name": "Old Indian: Main Line, 8.Re1 a6 9.Bf1"
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        "hash": "12876569570225827890",
        "name": "Benoni: 2...c5"
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        "fen": "rnbqkb1r/pp1ppppp/5n2/2p5/2PP4/4P3/PP3PPP/RNBQKBNR b KQkq - 0 3",
        "hash": "2278682319784360086",
        "name": "Benoni: 2...c5 3.e3"
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        "hash": "17738502610618034909",
        "name": "Benoni: 2...c5 3.e3 g6"
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        "fen": "rnbqkb1r/pp1ppp1p/5np1/2p5/2PP4/2N1P3/PP3PPP/R1BQKBNR b KQkq - 1 4",
        "hash": "989888697335326724",
        "name": "Benoni: 2...c5 3.e3 g6 4.Nc3"
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        "fen": "rnbqkb1r/pp1ppppp/5n2/2P5/2P5/8/PP2PPPP/RNBQKBNR b KQkq - 0 3",
        "hash": "14794853769685657438",
        "name": "Benoni: 3.dxc5"
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        "fen": "rnbqkb1r/pp1ppppp/5n2/2pP4/2P5/8/PP2PPPP/RNBQKBNR b KQkq - 0 3",
        "hash": "628956516477347439",
        "name": "Benoni: 3.d5"
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        "fen": "rnbqkb1r/1p1ppppp/p4n2/2pP4/2P5/8/PP2PPPP/RNBQKBNR w KQkq - 0 4",
        "hash": "15730353788200705715",
        "name": "Benoni: 3.d5 a6"
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    "A56h": {
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        "fen": "rnbqkb1r/pp1ppp1p/5np1/2pP4/2P5/8/PP2PPPP/RNBQKBNR w KQkq - 0 4",
        "hash": "16217132155367797796",
        "name": "Benoni: 3.d5 g6"
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    "A56i": {
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        "fen": "rnbqkb1r/pp2pppp/3p1n2/2pP4/2P5/8/PP2PPPP/RNBQKBNR w KQkq - 0 4",
        "hash": "3530847393903079170",
        "name": "Benoni: 3.d5 d6"
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        "hash": "2531969699703029648",
        "name": "Benoni: 3.d5 d6 4.Nc3 g6"
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    "A56k": {
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        "hash": "6311915793774709040",
        "name": "Benoni: 3.d5 d6 4.Nc3 g6 5.e4 Bg7"
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        "eco": "A56l",
        "fen": "rnbqk2r/pp2ppbp/3p1np1/2pP4/2P1P3/2N2P2/PP4PP/R1BQKBNR b KQkq - 0 6",
        "hash": "4118977031034922561",
        "name": "Benoni: 3.d5 d6 4.Nc3 g6 5.e4 Bg7 6.f3"
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        "fen": "rnbqk2r/pp2ppbp/3p1np1/2pP4/2P1P3/2NB4/PP3PPP/R1BQK1NR b KQkq - 2 6",
        "hash": "186279649974569795",
        "name": "Benoni: 3.d5 d6 4.Nc3 g6 5.e4 Bg7 6.Bd3"
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    "A56n": {
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        "fen": "rnbqkb1r/pp1ppppp/8/2pP4/2P1n3/8/PP2PPPP/RNBQKBNR w KQkq - 1 4",
        "hash": "3653206553450064789",
        "name": "Benoni: Vulture"
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        "fen": "rnbqkb1r/pp1p1ppp/5n2/2pPp3/2P5/8/PP2PPPP/RNBQKBNR w KQkq e6 0 4",
        "hash": "5617058603479604432",
        "name": "Benoni: Czech"
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    "A56p": {
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        "fen": "rnbqkb1r/pp3ppp/3p1n2/2pPp3/2P5/2N5/PP2PPPP/R1BQKBNR w KQkq - 0 5",
        "hash": "4678965233928345069",
        "name": "Benoni: Czech, 4.Nc3 d6"
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    "A56q": {
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        "fen": "rnbqkb1r/pp3p1p/3p1np1/2pPp3/2P1P3/2N5/PP3PPP/R1BQKBNR w KQkq - 0 6",
        "hash": "7880270224824253100",
        "name": "Benoni: Czech, 5.e4 g6"
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    "A56r": {
        "eco": "A56r",
        "fen": "rnbqk2r/pp2bppp/3p1n2/2pPp3/2P1P3/2N5/PP3PPP/R1BQKBNR w KQkq - 1 6",
        "hash": "10386559338697753718",
        "name": "Benoni: Czech, 5.e4 Be7"
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    "A56s": {
        "eco": "A56s",
        "fen": "rnbqk2r/pp2bppp/3p1n2/2pPp3/2P1P3/2N3P1/PP3P1P/R1BQKBNR b KQkq - 0 6",
        "hash": "13601649267911384142",
        "name": "Benoni: Czech, 5.e4 Be7 6.g3"
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    "A56t": {
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        "fen": "rnbqnrk1/pp2bppp/3p4/2pPp3/2P1P3/2N3P1/PP3PBP/R1BQK1NR w KQ - 3 8",
        "hash": "3087153986105644897",
        "name": "Benoni: Czech, 5.e4 Be7 6.g3 O-O 7.Bg2 Ne8"
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    "A56u": {
        "eco": "A56u",
        "fen": "rnbqk2r/pp2bppp/3p1n2/2pPp3/2P1P3/2NB4/PP3PPP/R1BQK1NR b KQkq - 2 6",
        "hash": "14207125171186714117",
        "name": "Benoni: Czech, 5.e4 Be7 6.Bd3"
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    "A56v": {
        "eco": "A56v",
        "fen": "rnbqk2r/pp2bppp/3p1n2/2pPp3/2P1P3/2N2N2/PP3PPP/R1BQKB1R b KQkq - 2 6",
        "hash": "5422496980888642891",
        "name": "Benoni: Czech, 5.e4 Be7 6.Nf3"
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    "A56w": {
        "eco": "A56w",
        "fen": "rnbq1rk1/pp2bppp/3p1n2/2pPp3/2P1P3/2N2N2/PP3PPP/R1BQKB1R w KQ - 3 7",
        "hash": "4749179885474745504",
        "name": "Benoni: Czech, 5.e4 Be7 6.Nf3 O-O"
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    "A56x": {
        "eco": "A56x",
        "fen": "rnbq1rk1/pp2bppp/3p1n2/2pPp3/2P1P3/2N2N2/PP2BPPP/R1BQK2R b KQ - 4 7",
        "hash": "3632428014173832707",
        "name": "Benoni: Czech, 5.e4 Be7 6.Nf3 O-O 7.Be2"
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    "A57a": {
        "eco": "A57a",
        "fen": "rnbqkb1r/p2ppppp/5n2/1ppP4/2P5/8/PP2PPPP/RNBQKBNR w KQkq b6 0 4",
        "hash": "7547727908582792018",
        "name": "Benko Gambit"
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    "A57b": {
        "eco": "A57b",
        "fen": "rnbqkb1r/p2ppppp/5n2/1ppP4/P1P5/8/1P2PPPP/RNBQKBNR b KQkq a3 0 4",
        "hash": "249831476490849948",
        "name": "Benko Gambit: 4.a4"
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    "A57c": {
        "eco": "A57c",
        "fen": "rnbqkb1r/p2ppppp/5n2/1ppP4/2P5/8/PP1NPPPP/R1BQKBNR b KQkq - 1 4",
        "hash": "3589460066087777122",
        "name": "Benko Gambit: 4.Nd2"
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    "A57d": {
        "eco": "A57d",
        "fen": "rnbqkb1r/p2ppppp/5n2/1ppP4/2P5/5N2/PP2PPPP/RNBQKB1R b KQkq - 1 4",
        "hash": "12959678013741955695",
        "name": "Benko Gambit: 4.Nf3"
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    "A57e": {
        "eco": "A57e",
        "fen": "rn1qkb1r/pb1ppppp/5n2/1ppP4/2P5/5N2/PP2PPPP/RNBQKB1R w KQkq - 2 5",
        "hash": "237088761993090548",
        "name": "Benko Gambit: 4.Nf3 Bb7"
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    "A57f": {
        "eco": "A57f",
        "fen": "rnbqkb1r/p2ppp1p/5np1/1ppP4/2P5/5N2/PP2PPPP/RNBQKB1R w KQkq - 0 5",
        "hash": "6516239332666828836",
        "name": "Benko Gambit: 4.Nf3 g6"
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    "A57g": {
        "eco": "A57g",
        "fen": "rnbqkb1r/p2ppp1p/5np1/1PpP4/8/5N2/PP2PPPP/RNBQKB1R b KQkq - 0 5",
        "hash": "12368647232739221875",
        "name": "Benko Gambit: 4.Nf3 g6 5.cxb5"
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    "A57h": {
        "eco": "A57h",
        "fen": "rnbqkb1r/p2ppppp/5n2/1PpP4/8/8/PP2PPPP/RNBQKBNR b KQkq - 0 4",
        "hash": "11058303618664092165",
        "name": "Benko Gambit: 4.cxb5"
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    "A57i": {
        "eco": "A57i",
        "fen": "rnbqkb1r/3ppppp/pP3n2/2pP4/8/8/PP2PPPP/RNBQKBNR b KQkq - 0 5",
        "hash": "6574802468427820849",
        "name": "Benko Gambit: 4.cxb5 a6 5.b6"
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    "A57j": {
        "eco": "A57j",
        "fen": "rnb1kb1r/3ppppp/pq3n2/2pP4/8/8/PP2PPPP/RNBQKBNR w KQkq - 0 6",
        "hash": "14365068559273705959",
        "name": "Benko Gambit: 4.cxb5 a6 5.b6 Qxb6"
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    "A57k": {
        "eco": "A57k",
        "fen": "rnbqkb1r/4pppp/pP1p1n2/2pP4/8/8/PP2PPPP/RNBQKBNR w KQkq - 0 6",
        "hash": "7099065420958148188",
        "name": "Benko Gambit: 4.cxb5 a6 5.b6 d6"
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    "A57l": {
        "eco": "A57l",
        "fen": "rnbqkb1r/3p1ppp/pP2pn2/2pP4/8/8/PP2PPPP/RNBQKBNR w KQkq - 0 6",
        "hash": "3263304553061351267",
        "name": "Benko Gambit: 4.cxb5 a6 5.b6 e6"
    },
    "A57m": {
        "eco": "A57m",
        "fen": "rnbqkb1r/3ppppp/p4n2/1PpP4/8/4P3/PP3PPP/RNBQKBNR b KQkq - 0 5",
        "hash": "16621748064517661309",
        "name": "Benko Gambit: 4.cxb5 a6 5.e3"
    },
    "A57n": {
        "eco": "A57n",
        "fen": "rnbqkb1r/3ppp1p/p4np1/1PpP4/8/4P3/PP3PPP/RNBQKBNR w KQkq - 0 6",
        "hash": "1087650749037621302",
        "name": "Benko Gambit: 4.cxb5 a6 5.e3 g6"
    },
    "A57o": {
        "eco": "A57o",
        "fen": "rnbqkb1r/3ppppp/p4n2/1PpP4/8/5P2/PP2P1PP/RNBQKBNR b KQkq - 0 5",
        "hash": "2679900502938469800",
        "name": "Benko Gambit: 4.cxb5 a6 5.f3"
    },
    "A57p": {
        "eco": "A57p",
        "fen": "rnbqkb1r/3p1ppp/p3pn2/1PpP4/8/5P2/PP2P1PP/RNBQKBNR w KQkq - 0 6",
        "hash": "6000793057973982714",
        "name": "Benko Gambit: 4.cxb5 a6 5.f3 e6"
    },
    "A57q": {
        "eco": "A57q",
        "fen": "rnbqkb1r/3ppppp/5n2/1ppP4/8/5P2/PP2P1PP/RNBQKBNR w KQkq - 0 6",
        "hash": "7115720943901159430",
        "name": "Benko Gambit: 4.cxb5 a6 5.f3 axb5"
    },
    "A57r": {
        "eco": "A57r",
        "fen": "rnbqkb1r/3ppppp/p4n2/1PpP4/8/2N5/PP2PPPP/R1BQKBNR b KQkq - 1 5",
        "hash": "12688353036496644096",
        "name": "Benko Gambit: Zaitsev Variation"
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    "A57s": {
        "eco": "A57s",
        "fen": "rnbqkb1r/3ppppp/5n2/1ppP4/8/2N5/PP2PPPP/R1BQKBNR w KQkq - 0 6",
        "hash": "17863212276432068014",
        "name": "Benko Gambit: Zaitsev, 5...axb5"
    },
    "A57t": {
        "eco": "A57t",
        "fen": "rnbqkb1r/4pppp/3p1n2/1NpP4/1p2P3/5N2/PP3PPP/R1BQKB1R b KQkq - 1 8",
        "hash": "4910310815754356557",
        "name": "Benko Gambit: Zaitsev, 8.Nf3"
    },
    "A57u": {
        "eco": "A57u",
        "fen": "rnbqkb1r/4pppp/3p1n2/1NpP4/1pB1P3/8/PP3PPP/R1BQK1NR b KQkq - 1 8",
        "hash": "18227111633252626646",
        "name": "Benko Gambit: Zaitsev, Nescafe Frappe Attack"
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    "A57v": {
        "eco": "A57v",
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        "hash": "4905800827069434899",
        "name": "Benko Gambit: Zaitsev, 8.Bf4"
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        "eco": "A57w",
        "fen": "rnbqkb1r/4pp1p/3p1n2/1NpP2p1/1p2PB2/8/PP3PPP/R2QKBNR w KQkq g6 0 9",
        "hash": "14147802050171138969",
        "name": "Benko Gambit: Zaitsev, 8.Bf4 g5"
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        "eco": "A58a",
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        "hash": "4154168095160724798",
        "name": "Benko Gambit: 5.bxa6"
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    "A58b": {
        "eco": "A58b",
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        "hash": "14993259981843693429",
        "name": "Benko Gambit: 5.bxa6 g6"
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        "eco": "A58c",
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        "hash": "15548437460432442824",
        "name": "Benko Gambit: 5.bxa6 Bxa6"
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    "A58d": {
        "eco": "A58d",
        "fen": "rn1qkb1r/4pp1p/b2p1np1/2pP4/8/6P1/PP2PPBP/RNBQK1NR w KQkq - 0 8",
        "hash": "11448001250658750127",
        "name": "Benko Gambit: Accepted, 6.g3 d6 7.Bg2 g6"
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        "eco": "A58e",
        "fen": "rn1qkb1r/3ppppp/b4n2/2pP4/8/2N5/PP2PPPP/R1BQKBNR b KQkq - 1 6",
        "hash": "3193120165865805585",
        "name": "Benko Gambit: Accepted, 6.Nc3"
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        "eco": "A58f",
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        "hash": "14259643833378587994",
        "name": "Benko Gambit: Accepted, 6.Nc3 g6"
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    "A58g": {
        "eco": "A58g",
        "fen": "rn1qkb1r/4pppp/b2p1n2/2pP4/8/2N5/PP2PPPP/R1BQKBNR w KQkq - 0 7",
        "hash": "1579263454729543292",
        "name": "Benko Gambit: Accepted, 6.Nc3 d6"
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    "A58h": {
        "eco": "A58h",
        "fen": "rn1qkb1r/4pppp/b2p1n2/2pP4/8/2N3P1/PP2PP1P/R1BQKBNR b KQkq - 0 7",
        "hash": "4110679248513975876",
        "name": "Benko Gambit: Accepted, 7.g3"
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        "eco": "A58i",
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        "hash": "14883912196308303681",
        "name": "Benko Gambit: Accepted, 7.Nf3"
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        "eco": "A58j",
        "fen": "rn1qkb1r/4pp1p/b2p1np1/2pP4/8/2N5/PP1NPPPP/R1BQKB1R b KQkq - 1 8",
        "hash": "18021312189075149696",
        "name": "Benko Gambit: Accepted, 7.Nf3 g6 8.Nd2"
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        "eco": "A58k",
        "fen": "rn1qkb1r/4pp1p/b2p1np1/2pP4/8/2N2NP1/PP2PP1P/R1BQKB1R b KQkq - 0 8",
        "hash": "854750797531395378",
        "name": "Benko Gambit: Fianchetto Variation"
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        "hash": "2271964251796754985",
        "name": "Benko Gambit: Fianchetto, 9.Bh3"
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        "hash": "1049533987841451745",
        "name": "Benko Gambit: Fianchetto, 9.Bg2"
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        "eco": "A58n",
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        "hash": "6326117803618010931",
        "name": "Benko Gambit: Fianchetto, 9...Nbd7 10.O-O Nb6"
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        "hash": "304094328452861706",
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        "hash": "5309282473513843158",
        "name": "Benko Gambit: Fianchetto, Main Line"
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        "hash": "16976546775395581266",
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        "hash": "14779216163872658114",
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        "hash": "17921844209299080626",
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        "hash": "4560123379069358952",
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        "hash": "15126930300013749110",
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        "hash": "6709761955428711901",
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        "hash": "5312337974634557475",
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        "hash": "9689828869957508320",
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        "hash": "16012214277431647928",
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        "hash": "17137792323177460596",
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        "hash": "18325390031276462272",
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        "hash": "8213272364877997541",
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        "hash": "5727171907909536279",
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        "hash": "8978062043095738331",
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        "hash": "16411055038869070528",
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        "hash": "4236852334377747279",
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        "hash": "9123339558545945516",
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        "hash": "10694824682114281001",
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        "hash": "15391709544984597822",
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        "hash": "6022535587612571891",
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        "hash": "5555246460971405222",
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        "hash": "9137085317498418749",
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        "hash": "11937246396690224896",
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        "fen": "rnbqkb1r/pp1p1ppp/5n2/2pP4/8/5N2/PP2PPPP/RNBQKB1R b KQkq - 0 5",
        "hash": "10707268876449842134",
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        "hash": "3517225352058983154",
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        "hash": "5921048161148333573",
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        "hash": "221206287642232814",
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        "hash": "9609109360442389732",
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        "hash": "8724482314770943605",
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        "hash": "12998558426126049330",
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        "hash": "1169886445884518678",
        "name": "Benoni: Snake Variation"
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        "hash": "14652647687671500843",
        "name": "Benoni: Snake, 6.Nf3"
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        "hash": "8681317016742100806",
        "name": "Benoni: Snake, 6.Nf3 Bc7"
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        "fen": "rnbqk2r/pp1p1ppp/3b1n2/2pP4/4P3/2N5/PP3PPP/R1BQKBNR b KQkq e3 0 6",
        "hash": "15292897012924353564",
        "name": "Benoni: Snake, 6.e4"
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        "hash": "429893169648403658",
        "name": "Benoni: Snake, 6.e4 O-O 7.Nf3"
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        "hash": "6760038691167072889",
        "name": "Benoni: 4.Nc3 exd5 5.cxd5 g6"
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        "hash": "10222817546237585759",
        "name": "Benoni: 4.Nc3 exd5 5.cxd5 d6"
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        "fen": "rnbqkb1r/pp3ppp/3p1n2/2pP4/8/2N2N2/PP2PPPP/R1BQKB1R b KQkq - 1 6",
        "hash": "6249398225719609442",
        "name": "Benoni: 4.Nc3 exd5 5.cxd5 d6 6.Nf3"
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        "fen": "rnbqkb1r/pp3p1p/3p1np1/2pP4/8/2N2N2/PP2PPPP/R1BQKB1R w KQkq - 0 7",
        "hash": "13766943070169258537",
        "name": "Benoni: 6.Nf3 g6"
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        "eco": "A62",
        "fen": "rnbq1rk1/pp3pbp/3p1np1/2pP4/8/2N2NP1/PP2PPBP/R1BQK2R w KQ - 3 9",
        "hash": "11244443689194551337",
        "name": "Benoni: Fianchetto, 8.Bg2 O-O"
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        "fen": "r1bq1rk1/pp1n1pbp/3p1np1/2pP4/8/2N2NP1/PP2PPBP/R1BQ1RK1 w - - 5 10",
        "hash": "15103465235560386293",
        "name": "Benoni: Fianchetto, 9...Nbd7"
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        "fen": "r1bqr1k1/1p1n1pbp/p2p1np1/2pP4/P7/2N3P1/1P1NPPBP/R1BQ1RK1 w - - 1 12",
        "hash": "12238419993044662511",
        "name": "Benoni: Fianchetto, 11...Re8"
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        "eco": "A65a",
        "fen": "rnbqkb1r/pp3ppp/3p1n2/2pP4/4P3/2N5/PP3PPP/R1BQKBNR b KQkq e3 0 6",
        "hash": "5321481444137079893",
        "name": "Benoni: 6.e4"
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        "eco": "A65b",
        "fen": "rnbqkb1r/pp3p1p/3p1np1/2pP4/4P3/2N5/PP3PPP/R1BQKBNR w KQkq - 0 7",
        "hash": "11560142618877756958",
        "name": "Benoni: 6.e4 g6"
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    "A65c": {
        "eco": "A65c",
        "fen": "rnbqkb1r/pp3p1p/3p1np1/2pP4/4PB2/2N5/PP3PPP/R2QKBNR b KQkq - 1 7",
        "hash": "8879135799177702525",
        "name": "Benoni: 6.e4 g6 7.Bf4"
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    "A65d": {
        "eco": "A65d",
        "fen": "rnbqkb1r/1p3p1p/p2p1np1/2pP4/4PB2/2N5/PP3PPP/R2QKBNR w KQkq - 0 8",
        "hash": "12235988837675832481",
        "name": "Benoni: 6.e4 g6 7.Bf4 a6"
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    "A65e": {
        "eco": "A65e",
        "fen": "rnbqkb1r/5p1p/p2p1np1/1ppP4/4PB2/2N2N2/PP3PPP/R2QKB1R w KQkq b6 0 9",
        "hash": "1346138576153987233",
        "name": "Benoni: 6.e4 g6 7.Bf4 a6 8.Nf3 b5"
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    "A65f": {
        "eco": "A65f",
        "fen": "rnbqkb1r/pp3p1p/3p1np1/2pP4/4P3/2NB4/PP3PPP/R1BQK1NR b KQkq - 1 7",
        "hash": "17681204518371509357",
        "name": "Benoni: 6.e4 g6 7.Bd3"
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        "hash": "1384278119736350312",
        "name": "Benoni: Four Pawns, Main Line, 10.e5: 12.Bg5 f6"
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        "eco": "A69k",
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        "hash": "1774147238291560397",
        "name": "Benoni: Four Pawns, Main Line, 10.e5: 12.Bg5 Qb6"
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        "eco": "A69l",
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        "hash": "1517902161660402444",
        "name": "Benoni: Four Pawns, Main Line, 10.e5: 12.Bg5 Qb6 13.O-O Nxe5 14.Nxe5"
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        "eco": "A69m",
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        "hash": "14944222046215246681",
        "name": "Benoni: Four Pawns, Main Line, 10.e5: 12.Bg5 Qb6 13.O-O Nxe5 14.d6"
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        "eco": "A70a",
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        "hash": "8865631088705693475",
        "name": "Benoni: Classical"
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    "A70b": {
        "eco": "A70b",
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        "hash": "12249506707408330751",
        "name": "Benoni: Classical, 7...a6"
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    "A70c": {
        "eco": "A70c",
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        "hash": "12926679292785790584",
        "name": "Benoni: Classical, 7...a6 8.a4 Bg4 9.Be2"
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    "A70d": {
        "eco": "A70d",
        "fen": "rnbqk2r/pp3pbp/3p1np1/2pP4/4P3/2N2N2/PP3PPP/R1BQKB1R w KQkq - 2 8",
        "hash": "14678692669500271753",
        "name": "Benoni: Classical, 7...Bg7"
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        "eco": "A70e",
        "fen": "rnbqk2r/pp3pbp/3p1np1/2pP4/4P3/2N2N2/PP2BPPP/R1BQK2R b KQkq - 3 8",
        "hash": "13273712079905547818",
        "name": "Benoni: Classical, 8.Be2"
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    "A70f": {
        "eco": "A70f",
        "fen": "rnbqk2r/pp3pbp/3p1np1/2pP4/Q3P3/2N2N2/PP3PPP/R1B1KB1R b KQkq - 3 8",
        "hash": "1806379381108465394",
        "name": "Benoni: Classical, 8.Qa4+"
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    "A70g": {
        "eco": "A70g",
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        "hash": "1216490558127687402",
        "name": "Benoni: Classical, 8.Bf4"
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    "A70h": {
        "eco": "A70h",
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        "hash": "11437050219124059898",
        "name": "Benoni: Classical, 8.Bd3"
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        "eco": "A70i",
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        "hash": "16889912676272790529",
        "name": "Benoni: Classical, 8.Bd3 O-O 9.O-O"
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    "A70j": {
        "eco": "A70j",
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        "hash": "2541979112819549563",
        "name": "Benoni: Classical, 8.h3"
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    "A70k": {
        "eco": "A70k",
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        "hash": "8999213076902006499",
        "name": "Benoni: Classical, 8.h3 O-O 9.Bd3"
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    "A70l": {
        "eco": "A70l",
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        "hash": "11394774253717003986",
        "name": "Benoni: Classical, 8.h3 O-O 9.Bd3 Bd7"
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    "A70m": {
        "eco": "A70m",
        "fen": "r1bq1rk1/pp3pbp/n2p1np1/2pP4/4P3/2NB1N1P/PP3PP1/R1BQK2R w KQ - 3 10",
        "hash": "3630757877539721823",
        "name": "Benoni: Classical, 8.h3 O-O 9.Bd3 Na6"
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    "A70n": {
        "eco": "A70n",
        "fen": "rnbqr1k1/pp3pbp/3p1np1/2pP4/4P3/2NB1N1P/PP3PP1/R1BQK2R w KQ - 3 10",
        "hash": "6967745772930181985",
        "name": "Benoni: Classical, 8.h3 O-O 9.Bd3 Re8"
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    "A70o": {
        "eco": "A70o",
        "fen": "rnbqr1k1/pp3pbp/3p1np1/3P4/2p1P3/2NB1N1P/PP3PP1/R1BQ1RK1 w - - 0 11",
        "hash": "14328385331293117180",
        "name": "Benoni: Classical, 8.h3 O-O 9.Bd3 Re8 10.O-O c4"
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    "A70p": {
        "eco": "A70p",
        "fen": "rnbq1rk1/1p3pbp/p2p1np1/2pP4/4P3/2NB1N1P/PP3PP1/R1BQK2R w KQ - 0 10",
        "hash": "12543740399147791935",
        "name": "Benoni: Classical, 8.h3 O-O 9.Bd3 a6"
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    "A70q": {
        "eco": "A70q",
        "fen": "rnbq1rk1/5pbp/p2p1np1/1ppP4/4P3/2NB1N1P/PP3PP1/R1BQ1RK1 w - b6 0 11",
        "hash": "12710636231683592210",
        "name": "Benoni: Classical, 8.h3 O-O 9.Bd3 a6 10.O-O b5"
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    "A70r": {
        "eco": "A70r",
        "fen": "rnbq1rk1/1p3pbp/p2p1np1/2pP4/P3P3/2NB1N1P/1P3PP1/R1BQK2R b KQ a3 0 10",
        "hash": "14257604233275139057",
        "name": "Benoni: Classical, 8.h3 O-O 9.Bd3 a6 10.a4"
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    "A70s": {
        "eco": "A70s",
        "fen": "r1bq1rk1/1p1n1pbp/p2p1np1/2pP4/P3P3/2NB1N1P/1P3PP1/R1BQK2R w KQ - 1 11",
        "hash": "17743712900667706941",
        "name": "Benoni: Classical, 8.h3 O-O 9.Bd3 a6 10.a4 Nbd7"
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    "A70t": {
        "eco": "A70t",
        "fen": "r1bqr1k1/1p1n1pbp/p2p1np1/2pP4/P3P3/2NB1N1P/1P3PP1/R1BQ1RK1 w - - 3 12",
        "hash": "10672098089056317615",
        "name": "Benoni: Classical, 8.h3 O-O 9.Bd3 a6 10.a4 Nbd7 11.O-O Re8"
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    "A70u": {
        "eco": "A70u",
        "fen": "rnbq1rk1/p4pbp/3p1np1/1ppP4/4P3/2NB1N1P/PP3PP1/R1BQK2R w KQ b6 0 10",
        "hash": "2082856040451732446",
        "name": "Benoni: Classical, 8.h3 O-O 9.Bd3 b5"
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    "A70v": {
        "eco": "A70v",
        "fen": "rnbq1rk1/p4pbp/3p1np1/1BpP4/4P3/2N2N1P/PP3PP1/R1BQK2R b KQ - 0 10",
        "hash": "10827801361165594470",
        "name": "Benoni: Classical, 8.h3 O-O 9.Bd3 b5 10.Bxb5"
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    "A70w": {
        "eco": "A70w",
        "fen": "rnbq1rk1/p4pbp/3p1np1/1NpP4/4P3/3B1N1P/PP3PP1/R1BQK2R b KQ - 0 10",
        "hash": "18201031923539471717",
        "name": "Benoni: Classical, 8.h3 O-O 9.Bd3 b5 10.Nxb5"
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    "A70x": {
        "eco": "A70x",
        "fen": "rnbqr1k1/p4pbp/3p1np1/1NpP4/4P3/3B1N1P/PP3PP1/R1BQK2R w KQ - 1 11",
        "hash": "16196854497705560295",
        "name": "Benoni: Classical, 8.h3 O-O 9.Bd3 b5 10.Nxb5 Re8"
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    "A70y": {
        "eco": "A70y",
        "fen": "rnbqr1k1/p4pbp/3p2p1/1NpP4/4n3/3B1N1P/PP3PP1/R1BQ1RK1 w - - 0 12",
        "hash": "2523418994259129572",
        "name": "Benoni: Classical, 8.h3 O-O 9.Bd3 b5 10.Nxb5 Re8 11.O-O Nxe4"
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    "A71": {
        "eco": "A71",
        "fen": "rnbqk2r/pp3pbp/3p1np1/2pP2B1/4P3/2N2N2/PP3PPP/R2QKB1R b KQkq - 3 8",
        "hash": "1004133394465650497",
        "name": "Benoni: Classical, 8.Bg5"
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    "A72": {
        "eco": "A72",
        "fen": "rnbq1rk1/pp3pbp/3p1np1/2pP4/4P3/2N2N2/PP2BPPP/R1BQK2R w KQ - 4 9",
        "hash": "12870548283001212865",
        "name": "Benoni: Classical, 8.Be2 O-O"
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    "A73": {
        "eco": "A73",
        "fen": "rnbq1rk1/pp3pbp/3p1np1/2pP4/4P3/2N2N2/PP2BPPP/R1BQ1RK1 b - - 5 9",
        "hash": "14765091289657431249",
        "name": "Benoni: Classical, 9.O-O"
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    "A74": {
        "eco": "A74",
        "fen": "rnbq1rk1/1p3pbp/p2p1np1/2pP4/P3P3/2N2N2/1P2BPPP/R1BQ1RK1 b - a3 0 10",
        "hash": "8491162520936905155",
        "name": "Benoni: Classical, 9.O-O a6 10.a4"
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    "A75": {
        "eco": "A75",
        "fen": "rn1q1rk1/1p3pbp/p2p1np1/2pP4/P3P1b1/2N2N2/1P2BPPP/R1BQ1RK1 w - - 1 11",
        "hash": "8576368136130459433",
        "name": "Benoni: Classical, 9.O-O a6 10.a4 Bg4"
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    "A76": {
        "eco": "A76",
        "fen": "rnbqr1k1/pp3pbp/3p1np1/2pP4/4P3/2N2N2/PP2BPPP/R1BQ1RK1 w - - 6 10",
        "hash": "15040302074049737043",
        "name": "Benoni: Classical, Main Line"
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    "A77": {
        "eco": "A77",
        "fen": "rnbqr1k1/pp3pbp/3p1np1/2pP4/4P3/2N5/PP1NBPPP/R1BQ1RK1 b - - 7 10",
        "hash": "980510296289513433",
        "name": "Benoni: Classical, Main Line, 10.Nd2"
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    "A78": {
        "eco": "A78",
        "fen": "r1bqr1k1/pp3pbp/n2p1np1/2pP4/4P3/2N5/PP1NBPPP/R1BQ1RK1 w - - 8 11",
        "hash": "4835691153939272549",
        "name": "Benoni: Classical, Main Line, 10.Nd2 Na6"
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    "A79": {
        "eco": "A79",
        "fen": "r1bqr1k1/pp3pbp/n2p1np1/2pP4/4P3/2N2P2/PP1NB1PP/R1BQ1RK1 b - - 0 11",
        "hash": "3290501070811724820",
        "name": "Benoni: Classical, Main Line, 10.Nd2 Na6 11.f3"
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    "A80a": {
        "eco": "A80a",
        "fen": "rnbqkbnr/ppppp1pp/8/5p2/3P4/8/PPP1PPPP/RNBQKBNR w KQkq f6 0 2",
        "hash": "1684873114507344896",
        "name": "Dutch"
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    "A80b": {
        "eco": "A80b",
        "fen": "rnbqkbnr/ppppp1pp/8/5p2/3P2P1/8/PPP1PP1P/RNBQKBNR b KQkq g3 0 2",
        "hash": "12982997005380161821",
        "name": "Dutch: Krejcik Gambit"
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    "A80c": {
        "eco": "A80c",
        "fen": "rnbqkbnr/ppppp1pp/8/5p2/3P4/7P/PPP1PPP1/RNBQKBNR b KQkq - 0 2",
        "hash": "18415784667315910130",
        "name": "Dutch: Korchnoi Attack"
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    "A80d": {
        "eco": "A80d",
        "fen": "rnbqkbnr/ppppp1pp/8/5pB1/3P4/8/PPP1PPPP/RN1QKBNR b KQkq - 1 2",
        "hash": "15076793835845199816",
        "name": "Dutch: 2.Bg5"
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    "A80e": {
        "eco": "A80e",
        "fen": "rnbqkb1r/ppppp1pp/5n2/5pB1/3P4/8/PPP1PPPP/RN1QKBNR w KQkq - 2 3",
        "hash": "10004109854653834846",
        "name": "Dutch: 2.Bg5 Nf6"
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    "A80f": {
        "eco": "A80f",
        "fen": "rnbqkbnr/ppppp1p1/7p/5pB1/3P4/8/PPP1PPPP/RN1QKBNR w KQkq - 0 3",
        "hash": "4885494631498673885",
        "name": "Dutch: 2.Bg5 h6"
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    "A80g": {
        "eco": "A80g",
        "fen": "rnbqkbnr/ppppp2p/6p1/5pB1/3P4/8/PPP1PPPP/RN1QKBNR w KQkq - 0 3",
        "hash": "4075717283414390147",
        "name": "Dutch: 2.Bg5 g6"
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    "A80h": {
        "eco": "A80h",
        "fen": "rnbqkbnr/ppppp2p/6p1/5pB1/3P4/2N5/PPP1PPPP/R2QKBNR b KQkq - 1 3",
        "hash": "14058201623813371738",
        "name": "Dutch: 2.Bg5 g6 3.Nc3"
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    "A80i": {
        "eco": "A80i",
        "fen": "rnbqkbnr/ppppp1pp/8/5p2/3P4/3Q4/PPP1PPPP/RNB1KBNR b KQkq - 1 2",
        "hash": "13188355995154410871",
        "name": "Dutch: Alapin"
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    "A80j": {
        "eco": "A80j",
        "fen": "rnbqkbnr/ppppp1pp/8/5p2/3P4/2N5/PPP1PPPP/R1BQKBNR b KQkq - 1 2",
        "hash": "17075054430513168089",
        "name": "Dutch: 2.Nc3"
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    "A80k": {
        "eco": "A80k",
        "fen": "rnbqkbnr/ppp1p1pp/8/3p1p2/3P4/2N5/PPP1PPPP/R1BQKBNR w KQkq d6 0 3",
        "hash": "7610209936712544511",
        "name": "Dutch: 2.Nc3 d5"
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    "A80l": {
        "eco": "A80l",
        "fen": "rnbqkbnr/ppp1p1pp/8/3p1pB1/3P4/2N5/PPP1PPPP/R2QKBNR b KQkq - 1 3",
        "hash": "12666007451002006327",
        "name": "Dutch: 2.Nc3 d5 3.Bg5"
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    "A80m": {
        "eco": "A80m",
        "fen": "rnbqkb1r/ppppp1pp/5n2/5p2/3P4/2N5/PPP1PPPP/R1BQKBNR w KQkq - 2 3",
        "hash": "13193562825886809935",
        "name": "Dutch: 2.Nc3 Nf6"
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    "A80n": {
        "eco": "A80n",
        "fen": "rnbqkb1r/ppppp1pp/5n2/5pB1/3P4/2N5/PPP1PPPP/R2QKBNR b KQkq - 3 3",
        "hash": "8161266114198955143",
        "name": "Dutch: 2.Nc3 Nf6 3.Bg5"
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    "A80o": {
        "eco": "A80o",
        "fen": "rnbqkb1r/ppp1p1pp/5n2/3p1pB1/3P4/2N5/PPP1PPPP/R2QKBNR w KQkq d6 0 4",
        "hash": "17593459686812068513",
        "name": "Dutch: 2.Nc3 Nf6 3.Bg5 d5"
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    "A80p": {
        "eco": "A80p",
        "fen": "rnbqkb1r/ppp3pp/5p2/3p1p2/3P4/2N5/PPP1PPPP/R2QKBNR w KQkq - 0 5",
        "hash": "16176556480192614255",
        "name": "Dutch: 2.Nc3 Nf6 3.Bg5 d5 4.Bxf6 exf6"
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    "A80q": {
        "eco": "A80q",
        "fen": "rnbqkbnr/ppppp1pp/8/5p2/3P4/5N2/PPP1PPPP/RNBQKB1R b KQkq - 1 2",
        "hash": "14701213586411658557",
        "name": "Dutch: 2.Nf3"
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    "A80r": {
        "eco": "A80r",
        "fen": "rnbqkbnr/pppp2pp/4p3/5p2/3P4/5N2/PPP1PPPP/RNBQKB1R w KQkq - 0 3",
        "hash": "13435013861129588079",
        "name": "Dutch: 2.Nf3 e6"
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    "A80s": {
        "eco": "A80s",
        "fen": "rnbqkbnr/pppp2pp/4p3/3P1p2/8/5N2/PPP1PPPP/RNBQKB1R b KQkq - 0 3",
        "hash": "34483705354558258",
        "name": "Dutch: 2.Nf3 e6 3.d5"
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    "A80t": {
        "eco": "A80t",
        "fen": "rnbqkb1r/ppppp1pp/5n2/5p2/3P4/5N2/PPP1PPPP/RNBQKB1R w KQkq - 2 3",
        "hash": "10946851189728009387",
        "name": "Dutch: 2.Nf3 Nf6"
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    "A80u": {
        "eco": "A80u",
        "fen": "rnbqkb1r/ppppp1pp/5n2/5p2/3P4/2P2N2/PP2PPPP/RNBQKB1R b KQkq - 0 3",
        "hash": "16227032066669990701",
        "name": "Dutch: Barcza System"
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    "A80v": {
        "eco": "A80v",
        "fen": "rnbqkb1r/ppppp1pp/5n2/5pB1/3P4/5N2/PPP1PPPP/RN1QKB1R b KQkq - 3 3",
        "hash": "5886574281156331363",
        "name": "Dutch: 2.Nf3 Nf6 3.Bg5"
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    "A81": {
        "eco": "A81",
        "fen": "rnbqkbnr/ppppp1pp/8/5p2/3P4/6P1/PPP1PP1P/RNBQKBNR b KQkq - 0 2",
        "hash": "4289507578016638008",
        "name": "Dutch: 2.g3"
    },
    "A82": {
        "eco": "A82",
        "fen": "rnbqkbnr/ppppp1pp/8/5p2/3PP3/8/PPP2PPP/RNBQKBNR b KQkq e3 0 2",
        "hash": "15233094113651867914",
        "name": "Dutch: Staunton Gambit"
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    "A83a": {
        "eco": "A83a",
        "fen": "rnbqkb1r/ppppp1pp/5n2/6B1/3Pp3/2N5/PPP2PPP/R2QKBNR b KQkq - 3 4",
        "hash": "8599061658575529542",
        "name": "Dutch: Staunton Gambit, Staunton Variation"
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    "A83b": {
        "eco": "A83b",
        "fen": "rnbqkb1r/p1ppp1pp/1p3n2/6B1/3Pp3/2N5/PPP2PPP/R2QKBNR w KQkq - 0 5",
        "hash": "2035424808263537117",
        "name": "Dutch: Staunton Gambit, Nimzowitsch Variation"
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    "A83c": {
        "eco": "A83c",
        "fen": "rnbqkb1r/pp1pp1pp/2p2n2/6B1/3Pp3/2N5/PPP2PPP/R2QKBNR w KQkq - 0 5",
        "hash": "16513834430923781629",
        "name": "Dutch: Staunton Gambit, Chigorin Variation"
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    "A83d": {
        "eco": "A83d",
        "fen": "rnbqkb1r/ppppp2p/5np1/6B1/3Pp3/2N5/PPP2PPP/R2QKBNR w KQkq - 0 5",
        "hash": "11448803773701223437",
        "name": "Dutch: Staunton Gambit, 4.Bg5 g6"
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    "A83e": {
        "eco": "A83e",
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        "hash": "162638068193660275",
        "name": "Dutch: Staunton Gambit, Alekhine Variation"
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        "hash": "17317383377016724348",
        "name": "Dutch: Staunton Gambit, Lasker Variation"
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        "hash": "81613680737908244",
        "name": "Dutch: Staunton Gambit, 4.Bg5 e6"
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        "hash": "12385969652931979139",
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        "hash": "16925924296257357635",
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        "hash": "15905546094487192389",
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        "hash": "12829136683186793524",
        "name": "Dutch: Staunton Gambit, 4.Bg5 Nc6 5.f3"
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        "hash": "7400428715980903704",
        "name": "Dutch: Staunton Gambit, 4.Bg5 Nc6 5.d5"
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        "hash": "17485884622057487012",
        "name": "Dutch: Staunton Gambit, 4.Bg5 Nc6 5.d5 Ne5 6.Qd4"
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    "A84": {
        "eco": "A84",
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        "hash": "11187574861719361287",
        "name": "Dutch: 2.c4"
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    "A85": {
        "eco": "A85",
        "fen": "rnbqkb1r/ppppp1pp/5n2/5p2/2PP4/2N5/PP2PPPP/R1BQKBNR b KQkq - 2 3",
        "hash": "4268124199589483592",
        "name": "Dutch: 2.c4 Nf6 3.Nc3"
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    "A86": {
        "eco": "A86",
        "fen": "rnbqkb1r/ppppp1pp/5n2/5p2/2PP4/6P1/PP2PP1P/RNBQKBNR b KQkq - 0 3",
        "hash": "17026649746379558569",
        "name": "Dutch: 2.c4 Nf6 3.g3"
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    "A87": {
        "eco": "A87",
        "fen": "rnbqk2r/ppppp1bp/5np1/5p2/2PP4/5NP1/PP2PPBP/RNBQK2R b KQkq - 3 5",
        "hash": "15840970635094339084",
        "name": "Dutch: Leningrad, Main Line"
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    "A88": {
        "eco": "A88",
        "fen": "rnbq1rk1/pp2p1bp/2pp1np1/5p2/2PP4/2N2NP1/PP2PPBP/R1BQ1RK1 w - - 0 8",
        "hash": "18400753095161218296",
        "name": "Dutch: Leningrad, Main Line, 7.Nc3 c6"
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    "A89": {
        "eco": "A89",
        "fen": "r1bq1rk1/ppp1p1bp/2np1np1/5p2/2PP4/2N2NP1/PP2PPBP/R1BQ1RK1 w - - 2 8",
        "hash": "14324734903396102720",
        "name": "Dutch: Leningrad, Main Line, 7.Nc3 Nc6"
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    "A90": {
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        "fen": "rnbqkb1r/pppp2pp/4pn2/5p2/2PP4/6P1/PP2PP1P/RNBQKBNR w KQkq - 0 4",
        "hash": "11114107121284701947",
        "name": "Dutch: 2.c4 Nf6 3.g3 e6"
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    "A91": {
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        "fen": "rnbqk2r/ppppb1pp/4pn2/5p2/2PP4/6P1/PP2PPBP/RNBQK1NR w KQkq - 2 5",
        "hash": "4251799473742031379",
        "name": "Dutch: 2.c4 Nf6 3.g3 e6 4.Bg2 Be7"
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        "eco": "A92",
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        "hash": "16919298507111244485",
        "name": "Dutch: 2.c4 Nf6 3.g3 e6 4.Bg2 Be7 5.Nf3 O-O"
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    "A93": {
        "eco": "A93",
        "fen": "rnbq1rk1/ppp1b1pp/4pn2/3p1p2/2PP4/1P3NP1/P3PPBP/RNBQ1RK1 b - - 0 7",
        "hash": "11345787015959633054",
        "name": "Dutch: Stonewall, Botvinnik Variation"
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    "A94": {
        "eco": "A94",
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        "hash": "12474242559928114764",
        "name": "Dutch: Stonewall, Botvinnik, 8.Ba3"
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        "hash": "8664855540879091345",
        "name": "Dutch: Stonewall, 7.Nc3 c6"
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    "A96": {
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        "hash": "12466668608055029944",
        "name": "Dutch: Classical"
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    "A97": {
        "eco": "A97",
        "fen": "rnb1qrk1/ppp1b1pp/3ppn2/5p2/2PP4/2N2NP1/PP2PPBP/R1BQ1RK1 w - - 2 8",
        "hash": "12471617168689240028",
        "name": "Dutch: Ilyin-Zhenevsky Variation"
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        "fen": "rnb1qrk1/ppp1b1pp/3ppn2/5p2/2PP4/2N2NP1/PPQ1PPBP/R1B2RK1 b - - 3 8",
        "hash": "2021385752582335416",
        "name": "Dutch: Ilyin-Zhenevsky, 8.Qc2"
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        "eco": "A99",
        "fen": "rnb1qrk1/ppp1b1pp/3ppn2/5p2/2PP4/1PN2NP1/P3PPBP/R1BQ1RK1 b - - 0 8",
        "hash": "2428132788683144369",
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        "fen": "rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq e3 0 1",
        "hash": "9384546495678726550",
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        "hash": "179980765225139740",
        "name": "Reversed Grob (Borg/Basman Defence)"
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        "hash": "5821864192058177866",
        "name": "St. George Defence"
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        "hash": "16813575956237317645",
        "name": "Owen Defence"
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        "hash": "6491674821325835037",
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        "hash": "11308738149989577940",
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        "hash": "14554812438639392423",
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        "hash": "10525792187381446449",
        "name": "Owen Defence: 3.Bd3 Nf6"
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        "hash": "13802097983433156341",
        "name": "Owen Defence: 3.Bd3 e6"
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        "hash": "7272761491303778248",
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        "fen": "rn1qkbnr/pb1p1ppp/1p2p3/2p5/3PP3/3B1N2/PPP2PPP/RNBQK2R w KQkq c6 0 5",
        "hash": "9412483251534711989",
        "name": "Owen Defence: 3.Bd3 e6 4.Nf3 c5"
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        "hash": "3013264061438682261",
        "name": "Nimzowitsch Defence"
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        "fen": "r1bqkbnr/pppppppp/2n5/8/4P3/2N5/PPPP1PPP/R1BQKBNR b KQkq - 2 2",
        "hash": "15151898121390417484",
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        "fen": "r1bqkbnr/pppppppp/2n5/8/4P3/5N2/PPPP1PPP/RNBQKB1R b KQkq - 2 2",
        "hash": "17489077436777137576",
        "name": "Nimzowitsch Defence: 2.Nf3"
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        "fen": "r1bqkbnr/ppp1pppp/2np4/8/4P3/5N2/PPPP1PPP/RNBQKB1R w KQkq - 0 3",
        "hash": "14631976546871463109",
        "name": "Nimzowitsch Defence: 2.Nf3 d6"
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        "fen": "r1bqkb1r/ppp1pppp/2np1n2/8/3PP3/5N2/PPP2PPP/RNBQKB1R w KQkq - 1 4",
        "hash": "6184606099596746769",
        "name": "Nimzowitsch Defence: 2.Nf3 d6 3.d4 Nf6"
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        "fen": "r1bqkb1r/ppp1pppp/2np1n2/8/3PP3/2N2N2/PPP2PPP/R1BQKB1R b KQkq - 2 4",
        "hash": "12556944886111085256",
        "name": "Nimzowitsch Defence: 2.Nf3 d6 3.d4 Nf6 4.Nc3"
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        "fen": "r2qkb1r/ppp1pppp/2np1n2/8/3PP1b1/2N2N2/PPP2PPP/R1BQKB1R w KQkq - 3 5",
        "hash": "12434703460850084898",
        "name": "Nimzowitsch Defence: 2.Nf3 d6 3.d4 Nf6 4.Nc3 Bg4"
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        "fen": "r2qkb1r/ppp1pppp/2np1n2/8/3PP1b1/2N1BN2/PPP2PPP/R2QKB1R b KQkq - 4 5",
        "hash": "16111710160060168108",
        "name": "Nimzowitsch Defence: 2.Nf3 d6 3.d4 Nf6 4.Nc3 Bg4 5.Be3"
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        "hash": "17069887342225508823",
        "name": "Nimzowitsch Defence: 2.d4"
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        "hash": "7393894993442386401",
        "name": "Nimzowitsch Defence: 2.d4 e5"
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        "fen": "r1bqkbnr/ppp1pppp/2n5/3p4/3PP3/8/PPP2PPP/RNBQKBNR w KQkq d6 0 3",
        "hash": "7606102635759634417",
        "name": "Nimzowitsch Defence: 2.d4 d5"
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        "fen": "r1bqkbnr/ppp1pppp/2n5/3p4/3PP3/2N5/PPP2PPP/R1BQKBNR b KQkq - 1 3",
        "hash": "10527540912022553896",
        "name": "Nimzowitsch Defence: Bogoljubow Variation"
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        "fen": "r1bqkbnr/ppp1pppp/2n5/3pP3/3P4/8/PPP2PPP/RNBQKBNR b KQkq - 0 3",
        "hash": "646082865364443541",
        "name": "Nimzowitsch Defence: 2.d4 d5 3.e5"
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        "hash": "528813709611831216",
        "name": "Scandinavian (Centre Counter)"
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        "hash": "11863996697488666748",
        "name": "Scandinavian: 2...Qxd5"
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        "fen": "rnbqkbnr/ppp1pppp/8/8/8/2N5/PPPP1PPP/R1BQKBNR w KQkq - 2 4",
        "hash": "9286437958086272902",
        "name": "Scandinavian: 2...Qxd5 3.Nc3 Qd8"
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    "B01d": {
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        "fen": "rnb1kbnr/ppp1pppp/3q4/8/8/2N5/PPPP1PPP/R1BQKBNR w KQkq - 2 4",
        "hash": "14797213354813370000",
        "name": "Scandinavian: Schiller Defence"
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        "fen": "rnb1kbnr/ppp1pppp/8/q7/8/2N5/PPPP1PPP/R1BQKBNR w KQkq - 2 4",
        "hash": "11620903243637981952",
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        "fen": "rnb1kbnr/ppp1pppp/8/q7/8/2N2N2/PPPP1PPP/R1BQKB1R b KQkq - 3 4",
        "hash": "8800404312105443901",
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        "fen": "rnb1kbnr/ppp1pppp/8/q7/3P4/2N5/PPP2PPP/R1BQKBNR b KQkq d3 0 4",
        "hash": "7237445422475849282",
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        "hash": "17729123257261751801",
        "name": "Scandinavian: 2...Qxd5 3.Nc3 Qa5 4.d4 c6"
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    "B01i": {
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        "fen": "rnb1kb1r/ppp1pppp/5n2/q7/3P4/2N5/PPP2PPP/R1BQKBNR w KQkq - 1 5",
        "hash": "4584284752836128724",
        "name": "Scandinavian: 2...Qxd5 3.Nc3 Qa5 4.d4 Nf6"
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        "fen": "rnb1kb1r/ppp1pppp/5n2/q7/3P4/2N2N2/PPP2PPP/R1BQKB1R b KQkq - 2 5",
        "hash": "16499581857301466857",
        "name": "Scandinavian: 2...Qxd5, 5.Nf3"
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        "fen": "rn2kb1r/ppp1pppp/5n2/q7/3P2b1/2N2N1P/PPP2PP1/R1BQKB1R b KQkq - 0 6",
        "hash": "1070270989520718321",
        "name": "Scandinavian: Lasker Variation"
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    "B01l": {
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        "fen": "rn2kb1r/ppp1pppp/5n2/q4b2/3P4/2N2N2/PPP2PPP/R1BQKB1R w KQkq - 3 6",
        "hash": "7485866353644668772",
        "name": "Scandinavian: 2...Qxd5, 5.Nf3 Bf5"
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        "hash": "8539009236396399954",
        "name": "Scandinavian: 2...Qxd5, Main Line"
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        "fen": "rnb1kb1r/pp2pppp/2p2n2/q7/2BP4/2N2N2/PPP2PPP/R1BQK2R b KQkq - 1 6",
        "hash": "1527586141323922420",
        "name": "Scandinavian: 2...Qxd5, Main Line, 6.Bc4"
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        "hash": "10820595256107008633",
        "name": "Scandinavian: 2...Qxd5, Main Line, 6.Bc4 Bf5"
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        "hash": "13810042772585474429",
        "name": "Scandinavian: 2...Qxd5, Main Line, 6.Bc4 Bf5 7.Bd2"
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        "hash": "6905810058891666091",
        "name": "Scandinavian: 2...Qxd5, Main Line, 8.Qe2"
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        "hash": "8892225506042186784",
        "name": "Scandinavian: 2...Nf6"
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        "hash": "5240314557846822819",
        "name": "Scandinavian: 2...Nf6 3.Bb5+"
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    "B01t": {
        "eco": "B01t",
        "fen": "rnbqkb1r/ppp1pppp/5n2/3P4/2P5/8/PP1P1PPP/RNBQKBNR b KQkq c3 0 3",
        "hash": "17817393343208859431",
        "name": "Scandinavian: 2...Nf6 3.c4"
    },
    "B01u": {
        "eco": "B01u",
        "fen": "rnbqkb1r/ppp1pppp/5n2/3P4/3P4/8/PPP2PPP/RNBQKBNR b KQkq d3 0 3",
        "hash": "13714208902744711522",
        "name": "Scandinavian: 2...Nf6 3.d4"
    },
    "B01v": {
        "eco": "B01v",
        "fen": "rn1qkb1r/ppp1pppp/5n2/3P4/3P2b1/5P2/PPP3PP/RNBQKBNR b KQkq - 0 4",
        "hash": "15145751051226235129",
        "name": "Scandinavian: Portuguese, 4.f3"
    },
    "B01w": {
        "eco": "B01w",
        "fen": "rnbqkb1r/ppp1pppp/8/3n4/3P4/8/PPP2PPP/RNBQKBNR w KQkq - 0 4",
        "hash": "2431048915374324798",
        "name": "Scandinavian: Marshall Variation"
    },
    "B01x": {
        "eco": "B01x",
        "fen": "rnbqkb1r/ppp1pp1p/6p1/3n4/3P4/5N2/PPP2PPP/RNBQKB1R w KQkq - 0 5",
        "hash": "1399614215527190344",
        "name": "Scandinavian: Marshall, 4.Nf3 g6"
    },
    "B01y": {
        "eco": "B01y",
        "fen": "rnbqkb1r/ppp1pppp/8/3n4/2PP4/8/PP3PPP/RNBQKBNR b KQkq c3 0 4",
        "hash": "12510803227055462201",
        "name": "Scandinavian: Marshall, 4.c4"
    },
    "B01z": {
        "eco": "B01z",
        "fen": "rnbqkb1r/ppp1pppp/1n6/8/2PP4/5N2/PP3PPP/RNBQKB1R b KQkq - 2 5",
        "hash": "6872544461651483978",
        "name": "Scandinavian: Marshall, 4.c4 Nb6 5.Nf3"
    },
    "B02a": {
        "eco": "B02a",
        "fen": "rnbqkb1r/pppppppp/5n2/8/4P3/8/PPPP1PPP/RNBQKBNR w KQkq - 1 2",
        "hash": "15695800775901642752",
        "name": "Alekhine Defence"
    },
    "B02b": {
        "eco": "B02b",
        "fen": "rnbqkb1r/pppppppp/5n2/8/4P3/3P4/PPP2PPP/RNBQKBNR b KQkq - 0 2",
        "hash": "8608186966401072084",
        "name": "Alekhine: Maroczy Variation"
    },
    "B02c": {
        "eco": "B02c",
        "fen": "rnbqkb1r/pppppppp/5n2/8/4P3/2N5/PPPP1PPP/R1BQKBNR b KQkq - 2 2",
        "hash": "2469581213825336025",
        "name": "Alekhine: Scandinavian Variation"
    },
    "B02d": {
        "eco": "B02d",
        "fen": "rnbqkb1r/ppp1pppp/5n2/3pP3/8/2N5/PPPP1PPP/R1BQKBNR b KQkq - 0 3",
        "hash": "14291755525912914587",
        "name": "Alekhine: Scandinavian, 3.e5"
    },
    "B02e": {
        "eco": "B02e",
        "fen": "rnbqkb1r/ppp1pppp/8/3pP3/4n3/2N5/PPPP1PPP/R1BQKBNR w KQkq - 1 4",
        "hash": "18185200432702973793",
        "name": "Alekhine: Scandinavian, 3.e5 Ne4"
    },
    "B02f": {
        "eco": "B02f",
        "fen": "rnbqkb1r/pppnpppp/8/3pP3/8/2N5/PPPP1PPP/R1BQKBNR w KQkq - 1 4",
        "hash": "4544554548522378094",
        "name": "Alekhine: Scandinavian, 3.e5 Nfd7"
    },
    "B02g": {
        "eco": "B02g",
        "fen": "rnbqkb1r/ppp1pppp/5n2/3P4/8/2N5/PPPP1PPP/R1BQKBNR b KQkq - 0 3",
        "hash": "9291101260909547257",
        "name": "Alekhine: Scandinavian, Exchange"
    },
    "B02h": {
        "eco": "B02h",
        "fen": "rnbqkb1r/ppp1pppp/8/3N4/8/8/PPPP1PPP/R1BQKBNR b KQkq - 0 4",
        "hash": "14860995974245627395",
        "name": "Alekhine: Scandinavian, Exchange, 4.Nxd5"
    },
    "B02i": {
        "eco": "B02i",
        "fen": "rnbqkb1r/ppp1pppp/8/3n4/2B5/2N5/PPPP1PPP/R1BQK1NR b KQkq - 1 4",
        "hash": "8983926146644329731",
        "name": "Alekhine: Scandinavian, Exchange, 4.Bc4"
    },
    "B02j": {
        "eco": "B02j",
        "fen": "rnbqkb1r/ppp2ppp/4p3/3n4/2B5/2N5/PPPP1PPP/R1BQK1NR w KQkq - 0 5",
        "hash": "782116750177523025",
        "name": "Alekhine: Scandinavian, Exchange, 4.Bc4 e6"
    },
    "B02k": {
        "eco": "B02k",
        "fen": "rnbqkb1r/ppp1pppp/1n6/8/2B5/2N5/PPPP1PPP/R1BQK1NR w KQkq - 2 5",
        "hash": "6140339458417962573",
        "name": "Alekhine: Scandinavian, Exchange, 4.Bc4 Nb6"
    },
    "B02l": {
        "eco": "B02l",
        "fen": "rnbqkb1r/pppppppp/5n2/4P3/8/8/PPPP1PPP/RNBQKBNR b KQkq - 0 2",
        "hash": "13306933313029875300",
        "name": "Alekhine: 2.e5"
    },
    "B02m": {
        "eco": "B02m",
        "fen": "rnbqkb1r/pppppppp/8/3nP3/8/8/PPPP1PPP/RNBQKBNR w KQkq - 1 3",
        "hash": "8987890325611041745",
        "name": "Alekhine: 2.e5 Nd5"
    },
    "B02n": {
        "eco": "B02n",
        "fen": "rnbqkb1r/pppppppp/8/3nP3/2B5/8/PPPP1PPP/RNBQK1NR b KQkq - 2 3",
        "hash": "2236268703835784567",
        "name": "Alekhine: 3.Bc4"
    },
    "B02o": {
        "eco": "B02o",
        "fen": "rnbqkb1r/pppppppp/8/3nP3/8/2N5/PPPP1PPP/R1BQKBNR b KQkq - 2 3",
        "hash": "9740298646935949576",
        "name": "Alekhine: Saemisch Attack"
    },
    "B02p": {
        "eco": "B02p",
        "fen": "rnbqkb1r/pppppppp/8/4P3/8/2n5/PPPP1PPP/R1BQKBNR w KQkq - 0 4",
        "hash": "14680979368181817162",
        "name": "Alekhine: Saemisch Attack, 3...Nxc3"
    },
    "B02q": {
        "eco": "B02q",
        "fen": "rnbqkb1r/pppppppp/8/4P3/8/2P5/PPP2PPP/R1BQKBNR b KQkq - 0 4",
        "hash": "11369792306789963056",
        "name": "Alekhine: Saemisch Attack, 3...Nxc3 4.dxc3"
    },
    "B02r": {
        "eco": "B02r",
        "fen": "rnbqkb1r/pppppppp/8/3nP3/2P5/8/PP1P1PPP/RNBQKBNR b KQkq c3 0 3",
        "hash": "17336881118833080534",
        "name": "Alekhine: Chase Variation"
    },
    "B02s": {
        "eco": "B02s",
        "fen": "rnbqkb1r/pppppppp/1n6/2P1P3/8/8/PP1P1PPP/RNBQKBNR b KQkq - 0 4",
        "hash": "13155468416299335208",
        "name": "Alekhine: Two Pawns (Lasker) Attack"
    },
    "B02t": {
        "eco": "B02t",
        "fen": "rnbqkb1r/pppppppp/8/2PnP3/8/2N5/PP1P1PPP/R1BQKBNR b KQkq - 2 5",
        "hash": "7249963616127129535",
        "name": "Alekhine: Two Pawns Attack, 5.Nc3"
    },
    "B02u": {
        "eco": "B02u",
        "fen": "rnbqkb1r/pppppppp/8/2PnP3/2B5/8/PP1P1PPP/RNBQK1NR b KQkq - 2 5",
        "hash": "18210771242705929152",
        "name": "Alekhine: Two Pawns Attack, 5.Bc4"
    },
    "B03a": {
        "eco": "B03a",
        "fen": "rnbqkb1r/pppppppp/8/3nP3/3P4/8/PPP2PPP/RNBQKBNR b KQkq d3 0 3",
        "hash": "13370704657651760787",
        "name": "Alekhine: 3.d4"
    },
    "B03b": {
        "eco": "B03b",
        "fen": "rnbqkb1r/ppp1pppp/3p4/3nP3/3P4/8/PPP2PPP/RNBQKBNR w KQkq - 0 4",
        "hash": "9238254383505225726",
        "name": "Alekhine: 3.d4 d6"
    },
    "B03c": {
        "eco": "B03c",
        "fen": "rnbqkb1r/ppp1pppp/3P4/3n4/3P4/8/PPP2PPP/RNBQKBNR b KQkq - 0 4",
        "hash": "13973362842837760225",
        "name": "Alekhine: 3.d4 d6 4.exd6"
    },
    "B03d": {
        "eco": "B03d",
        "fen": "rnbqkb1r/ppp1pppp/3p4/3nP3/2BP4/8/PPP2PPP/RNBQK1NR b KQkq - 1 4",
        "hash": "16395190901586387288",
        "name": "Alekhine: Balogh Variation"
    },
    "B03e": {
        "eco": "B03e",
        "fen": "rnbqkb1r/ppp1pppp/3p4/3nP3/2PP4/8/PP3PPP/RNBQKBNR b KQkq c3 0 4",
        "hash": "871235757116333305",
        "name": "Alekhine: 4.c4"
    },
    "B03f": {
        "eco": "B03f",
        "fen": "rnbqkb1r/ppp1pppp/1n1p4/4P3/2PP4/5N2/PP3PPP/RNBQKB1R b KQkq - 2 5",
        "hash": "18367970350897731210",
        "name": "Alekhine: 4.c4 Nb6 5.Nf3"
    },
    "B03g": {
        "eco": "B03g",
        "fen": "rnbqkb1r/ppp1pppp/1n1p4/4P3/2PP1P2/8/PP4PP/RNBQKBNR b KQkq f3 0 5",
        "hash": "15607983498552265278",
        "name": "Alekhine: Four Pawns Attack"
    },
    "B03h": {
        "eco": "B03h",
        "fen": "rn1qkb1r/ppp1pppp/1n1p4/4Pb2/2PP1P2/8/PP4PP/RNBQKBNR w KQkq - 1 6",
        "hash": "6594355908568466355",
        "name": "Alekhine: Four Pawns Attack, Trifunovic Variation"
    },
    "B03i": {
        "eco": "B03i",
        "fen": "rnbqkb1r/ppp1pp1p/1n1p2p1/4P3/2PP1P2/8/PP4PP/RNBQKBNR w KQkq - 0 6",
        "hash": "3544017447312054389",
        "name": "Alekhine: Four Pawns Attack, Fianchetto Variation"
    },
    "B03j": {
        "eco": "B03j",
        "fen": "rnbqkb1r/ppp1pppp/1n6/4p3/2PP1P2/8/PP4PP/RNBQKBNR w KQkq - 0 6",
        "hash": "16338974389126268087",
        "name": "Alekhine: Four Pawns Attack, 5...dxe5"
    },
    "B03k": {
        "eco": "B03k",
        "fen": "rnbqkb1r/pp2pppp/1n6/2p1P3/2PP4/8/PP4PP/RNBQKBNR w KQkq c6 0 7",
        "hash": "9822750658300246878",
        "name": "Alekhine: Four Pawns Attack, 6...c5"
    },
    "B03l": {
        "eco": "B03l",
        "fen": "rn1qkb1r/ppp1pppp/1n6/4Pb2/2PP4/8/PP4PP/RNBQKBNR w KQkq - 1 7",
        "hash": "17093926469406194094",
        "name": "Alekhine: Four Pawns Attack, 6...Bf5"
    },
    "B03m": {
        "eco": "B03m",
        "fen": "r1bqkb1r/ppp1pppp/1nn5/4P3/2PP4/8/PP4PP/RNBQKBNR w KQkq - 1 7",
        "hash": "14253157122122372384",
        "name": "Alekhine: Four Pawns Attack, 6...Nc6"
    },
    "B03n": {
        "eco": "B03n",
        "fen": "r1bqkb1r/ppp1pppp/1nn5/4P3/2PP4/4B3/PP4PP/RN1QKBNR b KQkq - 2 7",
        "hash": "13170171340924440238",
        "name": "Alekhine: Four Pawns Attack, 7.Be3"
    },
    "B03o": {
        "eco": "B03o",
        "fen": "rnbqkb1r/ppp1pppp/1n1P4/8/2PP4/8/PP3PPP/RNBQKBNR b KQkq - 0 5",
        "hash": "7229204650735859880",
        "name": "Alekhine: Exchange Variation"
    },
    "B03p": {
        "eco": "B03p",
        "fen": "rnbqkb1r/ppp2ppp/1n1p4/8/2PP4/2N5/PP3PPP/R1BQKBNR b KQkq - 1 6",
        "hash": "15122771602809831829",
        "name": "Alekhine: Exchange, 5...exd6 6.Nc3"
    },
    "B03q": {
        "eco": "B03q",
        "fen": "rnbqk2r/ppp1bppp/1n1p4/8/2PP4/2N5/PP3PPP/R1BQKBNR w KQkq - 2 7",
        "hash": "14200574520392412420",
        "name": "Alekhine: Exchange, 5...exd6 6.Nc3 Be7"
    },
    "B03r": {
        "eco": "B03r",
        "fen": "rnbqkb1r/pp2pppp/1n1p4/8/2PP4/8/PP3PPP/RNBQKBNR w KQkq - 0 6",
        "hash": "9376654227219631572",
        "name": "Alekhine: Exchange, 5...cxd6"
    },
    "B03s": {
        "eco": "B03s",
        "fen": "rnbqkb1r/pp2pppp/1n1p4/8/2PP4/2N5/PP3PPP/R1BQKBNR b KQkq - 1 6",
        "hash": "8770630488075652877",
        "name": "Alekhine: Exchange, 5...cxd6 6.Nc3"
    },
    "B03t": {
        "eco": "B03t",
        "fen": "rnbqkb1r/pp2pp1p/1n1p2p1/8/2PP4/2N1B3/PP3PPP/R2QKBNR b KQkq - 1 7",
        "hash": "16360277008309044936",
        "name": "Alekhine: Exchange, 5...cxd6 6.Nc3 g6 7.Be3"
    },
    "B04a": {
        "eco": "B04a",
        "fen": "rnbqkb1r/ppp1pppp/3p4/3nP3/3P4/5N2/PPP2PPP/RNBQKB1R b KQkq - 1 4",
        "hash": "6579815801524606659",
        "name": "Alekhine: Modern Variation"
    },
    "B04b": {
        "eco": "B04b",
        "fen": "r1bqkb1r/ppp1pppp/2np4/3nP3/3P4/5N2/PPP2PPP/RNBQKB1R w KQkq - 2 5",
        "hash": "17347280266652152768",
        "name": "Alekhine: Modern, 4...Nc6"
    },
    "B04c": {
        "eco": "B04c",
        "fen": "rnbqkb1r/pp2pppp/2pp4/3nP3/3P4/5N2/PPP2PPP/RNBQKB1R w KQkq - 0 5",
        "hash": "14495642937332893048",
        "name": "Alekhine: Modern, 4...c6"
    },
    "B04d": {
        "eco": "B04d",
        "fen": "rnbqkb1r/pp2pppp/2pp4/3nP3/2PP4/5N2/PP3PPP/RNBQKB1R b KQkq c3 0 5",
        "hash": "4974579105420750463",
        "name": "Alekhine: Modern, 4...c6 5.c4"
    },
    "B04e": {
        "eco": "B04e",
        "fen": "rnbqkb1r/ppp1pppp/1n1p4/4P3/3P4/5N2/PPP2PPP/RNBQKB1R w KQkq - 2 5",
        "hash": "8271912480832568717",
        "name": "Alekhine: Modern, Schmid Variation"
    },
    "B04f": {
        "eco": "B04f",
        "fen": "rnbqkb1r/ppp1pppp/8/3np3/3P4/5N2/PPP2PPP/RNBQKB1R w KQkq - 0 5",
        "hash": "7022575765118916682",
        "name": "Alekhine: Modern, Larsen Variation"
    },
    "B04g": {
        "eco": "B04g",
        "fen": "rnbqkb1r/ppp1pp1p/6p1/3nN3/3P4/8/PPP2PPP/RNBQKB1R w KQkq - 0 6",
        "hash": "3927865460585869111",
        "name": "Alekhine: Modern, Larsen, 5.Nxe5 g6"
    },
    "B04h": {
        "eco": "B04h",
        "fen": "rnbqkb1r/ppp1pp1p/6p1/3nN3/2BP4/8/PPP2PPP/RNBQK2R b KQkq - 1 6",
        "hash": "6138724031504644497",
        "name": "Alekhine: Modern, Larsen, 5.Nxe5 g6 6.Bc4"
    },
    "B04i": {
        "eco": "B04i",
        "fen": "rnbqkb1r/pp2pp1p/2p3p1/3nN3/2BP4/8/PPP2PPP/RNBQ1RK1 b kq - 1 7",
        "hash": "13348306596221940026",
        "name": "Alekhine: Modern, Larsen, 5.Nxe5 g6 6.Bc4 c6 7.O-O"
    },
    "B04j": {
        "eco": "B04j",
        "fen": "rnbqkb1r/ppp1pp1p/3p2p1/3nP3/3P4/5N2/PPP2PPP/RNBQKB1R w KQkq - 0 5",
        "hash": "12890534442513187976",
        "name": "Alekhine: Modern, Fianchetto Variation"
    },
    "B04k": {
        "eco": "B04k",
        "fen": "rnbqkb1r/ppp1pp1p/3p2p1/3nP3/2BP4/5N2/PPP2PPP/RNBQK2R b KQkq - 1 5",
        "hash": "15084759601518481966",
        "name": "Alekhine: Modern, Fianchetto, 5.Bc4"
    },
    "B04l": {
        "eco": "B04l",
        "fen": "rnbqkb1r/ppp1pp1p/1n1p2p1/4P3/2BP4/5N2/PPP2PPP/RNBQK2R w KQkq - 2 6",
        "hash": "17927805236348025184",
        "name": "Alekhine: Modern, Fianchetto, 5.Bc4 Nb6"
    },
    "B04m": {
        "eco": "B04m",
        "fen": "rnbqk2r/ppp1ppbp/1n1p2p1/4P3/3P4/1B3N2/PPP2PPP/RNBQK2R w KQkq - 4 7",
        "hash": "9328210968956166702",
        "name": "Alekhine: Modern, Fianchetto, 5.Bc4 Nb6 6.Bb3 Bg7"
    },
    "B04n": {
        "eco": "B04n",
        "fen": "rnbqk2r/ppp1ppbp/1n1p2p1/4P3/P2P4/1B3N2/1PP2PPP/RNBQK2R b KQkq a3 0 7",
        "hash": "16914685226131339232",
        "name": "Alekhine: Modern, Fianchetto, Keres Variation"
    },
    "B04o": {
        "eco": "B04o",
        "fen": "rnbqk2r/ppp1ppbp/1n1p2p1/4P1N1/3P4/1B6/PPP2PPP/RNBQK2R b KQkq - 5 7",
        "hash": "15539274284773153418",
        "name": "Alekhine: Modern, Fianchetto, 5.Bc4 Nb6 6.Bb3 Bg7 7.Ng5"
    },
    "B05a": {
        "eco": "B05a",
        "fen": "rn1qkb1r/ppp1pppp/3p4/3nP3/3P2b1/5N2/PPP2PPP/RNBQKB1R w KQkq - 2 5",
        "hash": "6450273619039049769",
        "name": "Alekhine: Modern, 4...Bg4"
    },
    "B05b": {
        "eco": "B05b",
        "fen": "rn1qkb1r/ppp1pppp/3p4/3nP3/3P2b1/5N1P/PPP2PP1/RNBQKB1R b KQkq - 0 5",
        "hash": "12785758996267438555",
        "name": "Alekhine: Modern, Panov Variation"
    },
    "B05c": {
        "eco": "B05c",
        "fen": "rn1qkb1r/ppp1pppp/3p4/3nP3/2PP2b1/5N2/PP3PPP/RNBQKB1R b KQkq c3 0 5",
        "hash": "15393416270148465454",
        "name": "Alekhine: Modern, Alekhine Variation"
    },
    "B05d": {
        "eco": "B05d",
        "fen": "rn1qkb1r/ppp1pppp/1n1P4/8/2PP2b1/5N2/PP3PPP/RNBQKB1R b KQkq - 0 6",
        "hash": "13683182066401089407",
        "name": "Alekhine: Modern, Alekhine Variation, 6.exd6"
    },
    "B05e": {
        "eco": "B05e",
        "fen": "rn1qkb1r/ppp2ppp/1n1p4/8/2PP2b1/5N2/PP3PPP/RNBQKB1R w KQkq - 0 7",
        "hash": "17581734915565268123",
        "name": "Alekhine: Modern, Alekhine Variation, 6.exd6 exd6"
    },
    "B05f": {
        "eco": "B05f",
        "fen": "rn1qkb1r/ppp1pppp/3p4/3nP3/3P2b1/5N2/PPP1BPPP/RNBQK2R b KQkq - 3 5",
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        "hash": "1172755318016414253",
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        "hash": "11269670497880521002",
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        "hash": "1805885792066369292",
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        "hash": "4866972030702005421",
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        "hash": "3150848602913373880",
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        "hash": "16425710936793935842",
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        "hash": "8943484052124267198",
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        "hash": "14637431381026140944",
        "name": "Caro-Kann: 2.Nf3"
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        "hash": "16992483941090005236",
        "name": "Caro-Kann: 2.Nc3"
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        "hash": "7979054769927315154",
        "name": "Caro-Kann: 2.Nc3 d5"
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        "hash": "15319336333895927913",
        "name": "Caro-Kann: Goldman/Spielmann"
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        "hash": "13105370460902735855",
        "name": "Caro-Kann: Two Knights Variation"
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        "fen": "rnbqkbnr/pp2pppp/2p5/8/4p3/2N2N2/PPPP1PPP/R1BQKB1R w KQkq - 0 4",
        "hash": "9031194955535126463",
        "name": "Caro-Kann: Two Knights, 3...dxe4"
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    "B10u": {
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        "fen": "rnbqkbnr/pp2pppp/2p5/8/4N3/5N2/PPPP1PPP/R1BQKB1R b KQkq - 0 4",
        "hash": "15534886561514397224",
        "name": "Caro-Kann: Two Knights, 3...dxe4 4.Nxe4"
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        "hash": "10122180944966475710",
        "name": "Caro-Kann: Two Knights, 3...dxe4 4.Nxe4 Nf6"
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        "hash": "13190034841581924613",
        "name": "Caro-Kann: Two Knights, 3...Bg4"
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    "B11b": {
        "eco": "B11b",
        "fen": "rn1qkbnr/pp2pppp/2p5/3p4/4P1b1/2N2N1P/PPPP1PP1/R1BQKB1R b KQkq - 0 4",
        "hash": "6917449258172414199",
        "name": "Caro-Kann: Two Knights, 3...Bg4 4.h3"
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    "B11c": {
        "eco": "B11c",
        "fen": "r2qkbnr/pp2pppp/2n3b1/1B1p4/6P1/2N2N1P/PPPP1P2/R1BQK2R w KQkq - 1 8",
        "hash": "15683596318049167482",
        "name": "Caro-Kann: Two Knights, 3...Bg4 4.h3 Bh5, 7.g4 Bg6"
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    "B11d": {
        "eco": "B11d",
        "fen": "rn1qkbnr/pp2pppp/2p5/3p4/4P3/2N2b1P/PPPP1PP1/R1BQKB1R w KQkq - 0 5",
        "hash": "17188697868358537863",
        "name": "Caro-Kann: Two Knights, 3...Bg4 4.h3 Bxf3"
    },
    "B11e": {
        "eco": "B11e",
        "fen": "rn1qkbnr/pp2pppp/2p5/8/4p3/2N2Q1P/PPPP1PP1/R1B1KB1R w KQkq - 0 6",
        "hash": "8113050728802301209",
        "name": "Caro-Kann: Two Knights, 3...Bg4 4.h3 Bxf3 5.Qxf3 dxe4"
    },
    "B11f": {
        "eco": "B11f",
        "fen": "rn1qkb1r/pp2pppp/2p2n2/3p4/4P3/2N2Q1P/PPPP1PP1/R1B1KB1R w KQkq - 1 6",
        "hash": "16425739839376180447",
        "name": "Caro-Kann: Two Knights, 3...Bg4 4.h3 Bxf3 5.Qxf3 Nf6"
    },
    "B11g": {
        "eco": "B11g",
        "fen": "rn1qkbnr/pp3ppp/2p1p3/3p4/4P3/2N2Q1P/PPPP1PP1/R1B1KB1R w KQkq - 0 6",
        "hash": "14873759680641307931",
        "name": "Caro-Kann: Two Knights, 3...Bg4 4.h3 Bxf3 5.Qxf3 e6"
    },
    "B11h": {
        "eco": "B11h",
        "fen": "rn1qkbnr/pp3ppp/2p1p3/3p4/3PP3/2N2Q1P/PPP2PP1/R1B1KB1R b KQkq d3 0 6",
        "hash": "819402476148897881",
        "name": "Caro-Kann: Two Knights, 3...Bg4 4.h3 Bxf3 5.Qxf3 e6 6.d4"
    },
    "B11i": {
        "eco": "B11i",
        "fen": "rn1qkbnr/pp3ppp/2p1p3/3p4/4P3/2N2QPP/PPPP1P2/R1B1KB1R b KQkq - 0 6",
        "hash": "16324579833980964131",
        "name": "Caro-Kann: Two Knights, 3...Bg4 4.h3 Bxf3 5.Qxf3 e6 6.g3"
    },
    "B11j": {
        "eco": "B11j",
        "fen": "rn1qkbnr/pp3ppp/2p1p3/3p4/4P3/2NP1Q1P/PPP2PP1/R1B1KB1R b KQkq - 0 6",
        "hash": "6975783673680867023",
        "name": "Caro-Kann: Two Knights, 3...Bg4 4.h3 Bxf3 5.Qxf3 e6 6.d3"
    },
    "B11k": {
        "eco": "B11k",
        "fen": "r2qkbnr/pp1n1ppp/2p1p3/3p4/4P3/2NP1Q1P/PPP2PP1/R1B1KB1R w KQkq - 1 7",
        "hash": "5993601810552537859",
        "name": "Caro-Kann: Two Knights, 3...Bg4 4.h3 Bxf3 5.Qxf3 e6 6.d3 Nd7"
    },
    "B11l": {
        "eco": "B11l",
        "fen": "rn1qkb1r/pp3ppp/2p1pn2/3p4/4P3/2NP1Q1P/PPP2PP1/R1B1KB1R w KQkq - 1 7",
        "hash": "4260619373461237593",
        "name": "Caro-Kann: Two Knights, 3...Bg4 4.h3 Bxf3 5.Qxf3 e6 6.d3 Nf6"
    },
    "B11m": {
        "eco": "B11m",
        "fen": "rn1qkb1r/pp3ppp/2p1pn2/3p4/4P3/P1NP1Q1P/1PP2PP1/R1B1KB1R b KQkq - 0 7",
        "hash": "17347007704773779737",
        "name": "Caro-Kann: Two Knights, 3...Bg4 4.h3 Bxf3 5.Qxf3 e6 6.d3 Nf6 7.a3"
    },
    "B11n": {
        "eco": "B11n",
        "fen": "rn1qkb1r/pp3ppp/2p1pn2/3p4/4P3/2NP1Q1P/PPPB1PP1/R3KB1R b KQkq - 2 7",
        "hash": "1345899034588251229",
        "name": "Caro-Kann: Two Knights, 3...Bg4 4.h3 Bxf3 5.Qxf3 e6 6.d3 Nf6 7.Bd2"
    },
    "B12a": {
        "eco": "B12a",
        "fen": "rnbqkbnr/pp1ppppp/2p5/8/3PP3/8/PPP2PPP/RNBQKBNR b KQkq d3 0 2",
        "hash": "15380735101731651439",
        "name": "Caro-Kann: 2.d4"
    },
    "B12b": {
        "eco": "B12b",
        "fen": "rnbqkbnr/pp2pppp/2p5/3p4/3PP3/8/PPP2PPP/RNBQKBNR w KQkq d6 0 3",
        "hash": "5771779641808056649",
        "name": "Caro-Kann: 2.d4 d5"
    },
    "B12c": {
        "eco": "B12c",
        "fen": "rnbqkbnr/pp2pppp/2p5/3p4/3PP3/4B3/PPP2PPP/RN1QKBNR b KQkq - 1 3",
        "hash": "2527012992335669959",
        "name": "Caro-Kann: Mieses Gambit"
    },
    "B12d": {
        "eco": "B12d",
        "fen": "rnbqkbnr/pp2pppp/2p5/3p4/3PP3/5P2/PPP3PP/RNBQKBNR b KQkq - 0 3",
        "hash": "4515031458725109304",
        "name": "Caro-Kann: Maroczy (Fantasy) Variation"
    },
    "B12e": {
        "eco": "B12e",
        "fen": "rnbqkbnr/pp3ppp/2p1p3/3p4/3PP3/5P2/PPP3PP/RNBQKBNR w KQkq - 0 4",
        "hash": "5251037743829782122",
        "name": "Caro-Kann: Maroczy (Fantasy), 3...e6"
    },
    "B12f": {
        "eco": "B12f",
        "fen": "rnbqkbnr/pp2pppp/2p5/8/3Pp3/5P2/PPP3PP/RNBQKBNR w KQkq - 0 4",
        "hash": "17735740728237076072",
        "name": "Caro-Kann: Maroczy (Fantasy), 3...dxe4"
    },
    "B12g": {
        "eco": "B12g",
        "fen": "rnbqkbnr/pp2pppp/2p5/3p4/3PP3/8/PPPN1PPP/R1BQKBNR b KQkq - 1 3",
        "hash": "682228701176355193",
        "name": "Caro-Kann: 3.Nd2"
    },
    "B12h": {
        "eco": "B12h",
        "fen": "rnbqkbnr/pp2pp1p/2p3p1/3p4/3PP3/8/PPPN1PPP/R1BQKBNR w KQkq - 0 4",
        "hash": "16195947259018267442",
        "name": "Caro-Kann: Gurgenidze/Modern: 3.Nd2 g6"
    },
    "B12i": {
        "eco": "B12i",
        "fen": "rnbqkbnr/pp2pppp/2p5/3pP3/3P4/8/PPP2PPP/RNBQKBNR b KQkq - 0 3",
        "hash": "3557964634786027309",
        "name": "Caro-Kann: Advance Variation"
    },
    "B12j": {
        "eco": "B12j",
        "fen": "rnbqkbnr/pp2pppp/8/2ppP3/3P4/8/PPP2PPP/RNBQKBNR w KQkq - 0 4",
        "hash": "13672214985046133474",
        "name": "Caro-Kann: Advance, 3...c5"
    },
    "B12k": {
        "eco": "B12k",
        "fen": "r1bqkbnr/pp2pppp/2n5/2PpP3/8/8/PPP2PPP/RNBQKBNR w KQkq - 1 5",
        "hash": "7616586588474013837",
        "name": "Caro-Kann: Advance, 3...c5 4.dxc5 Nc6"
    },
    "B12l": {
        "eco": "B12l",
        "fen": "rn1qkbnr/pp2pppp/2p5/3pPb2/3P4/8/PPP2PPP/RNBQKBNR w KQkq - 1 4",
        "hash": "12860315101629505184",
        "name": "Caro-Kann: Advance, 3...Bf5"
    },
    "B12m": {
        "eco": "B12m",
        "fen": "rn1qkbnr/pp2pppp/2p5/3pPb2/3P3P/8/PPP2PP1/RNBQKBNR b KQkq h3 0 4",
        "hash": "3376178387797714910",
        "name": "Caro-Kann: Advance, 4.h4"
    },
    "B12n": {
        "eco": "B12n",
        "fen": "rn1qkbnr/pp2pppp/2p5/3pPb2/3P4/2P5/PP3PPP/RNBQKBNR b KQkq - 0 4",
        "hash": "14169446936272687398",
        "name": "Caro-Kann: Advance, 4.c3"
    },
    "B12o": {
        "eco": "B12o",
        "fen": "rn1qkbnr/pp2pppp/2p5/3pPb2/3P4/3B4/PPP2PPP/RNBQK1NR b KQkq - 2 4",
        "hash": "16678137635209157843",
        "name": "Caro-Kann: Advance, 4.Bd3"
    },
    "B12p": {
        "eco": "B12p",
        "fen": "rn1qkbnr/pp2pppp/2p5/3pPb2/3P4/5N2/PPP2PPP/RNBQKB1R b KQkq - 2 4",
        "hash": "7574465805645103005",
        "name": "Caro-Kann: Advance, 4.Nf3"
    },
    "B12q": {
        "eco": "B12q",
        "fen": "rn1qkbnr/pp3ppp/2p1p3/3pPb2/3P4/5N2/PPP1BPPP/RNBQK2R b KQkq - 1 5",
        "hash": "7848253855662237036",
        "name": "Caro-Kann: Advance, 4.Nf3 e6 5.Be2"
    },
    "B12r": {
        "eco": "B12r",
        "fen": "r2qkbnr/pp1n1ppp/2p1p3/3pPb2/3P4/5N2/PPP1BPPP/RNBQK2R w KQkq - 2 6",
        "hash": "6848253271664920736",
        "name": "Caro-Kann: Advance, 4.Nf3 e6 5.Be2 Nd7"
    },
    "B12s": {
        "eco": "B12s",
        "fen": "rn1qkbnr/pp3ppp/4p3/2ppPb2/3P4/5N2/PPP1BPPP/RNBQK2R w KQkq - 0 6",
        "hash": "16156526945297119395",
        "name": "Caro-Kann: Advance, 4.Nf3 e6 5.Be2 c5"
    },
    "B12t": {
        "eco": "B12t",
        "fen": "rn1qkbnr/pp3ppp/4p3/2ppPb2/3P4/5N2/PPP1BPPP/RNBQ1RK1 b kq - 1 6",
        "hash": "11403950519358972851",
        "name": "Caro-Kann: Advance, 4.Nf3 e6 5.Be2 c5 6.O-O"
    },
    "B12u": {
        "eco": "B12u",
        "fen": "rn1qkbnr/pp3ppp/4p3/2ppPb2/3P4/4BN2/PPP1BPPP/RN1QK2R b KQkq - 1 6",
        "hash": "10610261143547814701",
        "name": "Caro-Kann: Advance, 4.Nf3 e6 5.Be2 c5 6.Be3"
    },
    "B12v": {
        "eco": "B12v",
        "fen": "rn1qkbnr/pp2pppp/2p5/3pPb2/3P4/2N5/PPP2PPP/R1BQKBNR b KQkq - 2 4",
        "hash": "5327227090898345081",
        "name": "Caro-Kann: Advance, 4.Nc3"
    },
    "B12w": {
        "eco": "B12w",
        "fen": "rn1qkbnr/pp3ppp/2p1p3/3pPb2/3P2P1/2N5/PPP2P1P/R1BQKBNR b KQkq g3 0 5",
        "hash": "11300920386738331958",
        "name": "Caro-Kann: Advance, Main Line"
    },
    "B12x": {
        "eco": "B12x",
        "fen": "rn1qkbnr/pp3ppp/4p1b1/2ppP3/3P2P1/2N5/PPP1NP1P/R1BQKB1R w KQkq - 0 7",
        "hash": "10680517587712702405",
        "name": "Caro-Kann: Advance, Main Line, 6.Nge2 c5"
    },
    "B13a": {
        "eco": "B13a",
        "fen": "rnbqkbnr/pp2pppp/2p5/3P4/3P4/8/PPP2PPP/RNBQKBNR b KQkq - 0 3",
        "hash": "8630710310852080463",
        "name": "Caro-Kann: Exchange Variation"
    },
    "B13b": {
        "eco": "B13b",
        "fen": "rnbqkbnr/pp2pppp/8/3p4/3P4/8/PPP2PPP/RNBQKBNR w KQkq - 0 4",
        "hash": "339702937079627509",
        "name": "Caro-Kann: Exchange, 3...cxd5"
    },
    "B13c": {
        "eco": "B13c",
        "fen": "rnbqkbnr/pp2pppp/8/3p4/3P4/5N2/PPP2PPP/RNBQKB1R b KQkq - 1 4",
        "hash": "16128009235181068232",
        "name": "Caro-Kann: Exchange, 4.Nf3"
    },
    "B13d": {
        "eco": "B13d",
        "fen": "rnbqkb1r/pp2pppp/5n2/3p4/3P4/5N2/PPP2PPP/RNBQKB1R w KQkq - 2 5",
        "hash": "9528497537549704798",
        "name": "Caro-Kann: Exchange, 4.Nf3 Nf6"
    },
    "B13e": {
        "eco": "B13e",
        "fen": "rnbqkbnr/pp2pppp/8/3p4/3P4/3B4/PPP2PPP/RNBQK1NR b KQkq - 1 4",
        "hash": "5889441294098988166",
        "name": "Caro-Kann: Exchange, 4.Bd3"
    },
    "B13f": {
        "eco": "B13f",
        "fen": "r1bqkbnr/pp2pppp/2n5/3p4/3P4/3B4/PPP2PPP/RNBQK1NR w KQkq - 2 5",
        "hash": "18038789273713957253",
        "name": "Caro-Kann: Exchange, 4.Bd3 Nc6"
    },
    "B13g": {
        "eco": "B13g",
        "fen": "r1bqkbnr/pp2pp1p/2n3p1/3p4/3P4/2PB4/PP3PPP/RNBQK1NR w KQkq - 0 6",
        "hash": "7293593370455655496",
        "name": "Caro-Kann: Exchange, 4.Bd3 Nc6 5.c3 g6"
    },
    "B13h": {
        "eco": "B13h",
        "fen": "r1bqkb1r/pp2pppp/2n2n2/3p4/3P4/2PB4/PP3PPP/RNBQK1NR w KQkq - 1 6",
        "hash": "15520085086091515797",
        "name": "Caro-Kann: Exchange, 4.Bd3 Nc6 5.c3 Nf6"
    },
    "B13i": {
        "eco": "B13i",
        "fen": "r1bqkb1r/pp2pppp/2n2n2/3p4/3P4/2PB1N2/PP3PPP/RNBQK2R b KQkq - 2 6",
        "hash": "866529366953490088",
        "name": "Caro-Kann: Exchange, 4.Bd3 Nc6 5.c3 Nf6 6.Nf3"
    },
    "B13j": {
        "eco": "B13j",
        "fen": "r1bqkb1r/pp2pppp/2n2n2/3p4/3P1B2/2PB4/PP3PPP/RN1QK1NR b KQkq - 2 6",
        "hash": "880046537159376374",
        "name": "Caro-Kann: Exchange, Rubinstein Variation"
    },
    "B13k": {
        "eco": "B13k",
        "fen": "r2qkb1r/pp2pppp/2n2n2/3p4/3P1Bb1/2PB4/PP3PPP/RN1QK1NR w KQkq - 3 7",
        "hash": "1073342821382451996",
        "name": "Caro-Kann: Exchange, Rubinstein, 6...Bg4"
    },
    "B13l": {
        "eco": "B13l",
        "fen": "r1q1kb1r/pp2pppp/2n2n2/3p4/3P1Bb1/1QPB4/PP3PPP/RN2K1NR w KQkq - 5 8",
        "hash": "16587814108426731597",
        "name": "Caro-Kann: Exchange, Rubinstein, 7.Qb3 Qc8"
    },
    "B13m": {
        "eco": "B13m",
        "fen": "r3kb1r/pp1qpppp/2n2n2/3p4/3P1Bb1/1QPB4/PP3PPP/RN2K1NR w KQkq - 5 8",
        "hash": "2994790351839563445",
        "name": "Caro-Kann: Exchange, Rubinstein, 7.Qb3 Qd7"
    },
    "B13n": {
        "eco": "B13n",
        "fen": "rnbqkbnr/pp2pppp/8/3p4/2PP4/8/PP3PPP/RNBQKBNR b KQkq c3 0 4",
        "hash": "9841844171730982386",
        "name": "Caro-Kann: Panov-Botvinnik Attack"
    },
    "B13o": {
        "eco": "B13o",
        "fen": "rnbqkb1r/pp2pppp/5n2/3p4/2PP4/8/PP3PPP/RNBQKBNR w KQkq - 1 5",
        "hash": "15238903320001926244",
        "name": "Caro-Kann: Panov-Botvinnik, 4...Nf6"
    },
    "B13p": {
        "eco": "B13p",
        "fen": "rnbqkb1r/pp2pppp/5n2/3p4/2PP4/2N5/PP3PPP/R1BQKBNR b KQkq - 2 5",
        "hash": "2948852210967959229",
        "name": "Caro-Kann: Panov-Botvinnik, 5.Nc3"
    },
    "B13q": {
        "eco": "B13q",
        "fen": "r1bqkb1r/pp2pppp/2n2n2/3p4/2PP4/2N5/PP3PPP/R1BQKBNR w KQkq - 3 6",
        "hash": "9440025942284006334",
        "name": "Caro-Kann: Panov-Botvinnik, 5...Nc6"
    },
    "B13r": {
        "eco": "B13r",
        "fen": "r1bqkb1r/pp2pppp/2n2n2/3p4/2PP4/2N2N2/PP3PPP/R1BQKB1R b KQkq - 4 6",
        "hash": "6369595526109270659",
        "name": "Caro-Kann: Panov-Botvinnik, 5...Nc6 6.Nf3"
    },
    "B13s": {
        "eco": "B13s",
        "fen": "r2qkb1r/pp2pppp/2n2n2/3p4/2PP2b1/2N2N2/PP3PPP/R1BQKB1R w KQkq - 5 7",
        "hash": "6536573882846682217",
        "name": "Caro-Kann: Panov-Botvinnik, 5...Nc6 6.Nf3 Bg4"
    },
    "B13t": {
        "eco": "B13t",
        "fen": "r2qkb1r/pp2pppp/2n5/3n4/3P2b1/1QN2N2/PP3PPP/R1B1KB1R b KQkq - 1 8",
        "hash": "17405235430705380814",
        "name": "Caro-Kann: Panov-Botvinnik, 5...Nc6 6.Nf3 Bg4: 8.Qb3"
    },
    "B13u": {
        "eco": "B13u",
        "fen": "r2qkb1r/pp3ppp/2n1p3/3n4/3P4/1QN2P2/PP3P1P/R1B1KB1R w KQkq - 0 10",
        "hash": "2086138317249517045",
        "name": "Caro-Kann: Panov-Botvinnik, 5...Nc6 6.Nf3 Bg4: Main Line"
    },
    "B13v": {
        "eco": "B13v",
        "fen": "r1bqkb1r/pp2pppp/2n2n2/3p2B1/2PP4/2N5/PP3PPP/R2QKBNR b KQkq - 4 6",
        "hash": "4997837400949762166",
        "name": "Caro-Kann: Panov-Botvinnik, 5...Nc6 6.Bg5"
    },
    "B13w": {
        "eco": "B13w",
        "fen": "r1b1kb1r/pp2pppp/2n2n2/q2p2B1/2PP4/2N5/PP3PPP/R2QKBNR w KQkq - 5 7",
        "hash": "11252375581820946937",
        "name": "Caro-Kann: Panov-Botvinnik, 5...Nc6, Czerniak Variation"
    },
    "B13x": {
        "eco": "B13x",
        "fen": "r2qkb1r/pp2pppp/2n1bn2/3p2B1/2PP4/2N5/PP3PPP/R2QKBNR w KQkq - 5 7",
        "hash": "1288997573560947582",
        "name": "Caro-Kann: Panov-Botvinnik, 5...Nc6 6.Bg5 Be6"
    },
    "B13y": {
        "eco": "B13y",
        "fen": "r1bqkb1r/pp3ppp/2n1pn2/3p2B1/2PP4/2N5/PP3PPP/R2QKBNR w KQkq - 0 7",
        "hash": "3687340422363297828",
        "name": "Caro-Kann: Panov-Botvinnik, 5...Nc6, Normal Variation"
    },
    "B13z": {
        "eco": "B13z",
        "fen": "r1bqk2r/pp2bppp/2n1pn2/2Pp2B1/3P4/2N2N2/PP3PPP/R2QKB1R b KQkq - 0 8",
        "hash": "10598770727370037304",
        "name": "Caro-Kann: Panov-Botvinnik, 5...Nc6, Normal Variaiton, 8.c5"
    },
    "B14a": {
        "eco": "B14a",
        "fen": "rnbqkb1r/pp2pp1p/5np1/3p4/2PP4/2N5/PP3PPP/R1BQKBNR w KQkq - 0 6",
        "hash": "13931953810975048950",
        "name": "Caro-Kann: Panov-Botvinnik, 5...g6"
    },
    "B14b": {
        "eco": "B14b",
        "fen": "rnbqkb1r/pp2pp1p/5np1/3P4/3P4/2N5/PP3PPP/R1BQKBNR b KQkq - 0 6",
        "hash": "14948192496979497195",
        "name": "Caro-Kann: Panov-Botvinnik, 5...g6 6.cxd5"
    },
    "B14c": {
        "eco": "B14c",
        "fen": "rnbqkb1r/pp2pp1p/6p1/3n4/3P4/2N5/PP3PPP/R1BQKBNR w KQkq - 0 7",
        "hash": "5808763554454195639",
        "name": "Caro-Kann: Panov-Botvinnik, 5...g6 6.cxd5 Nxd5"
    },
    "B14d": {
        "eco": "B14d",
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        "hash": "18124206797056632140",
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        "hash": "14539522135797355095",
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        "hash": "10531938950989943745",
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        "hash": "17230568090873129011",
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        "hash": "92768586179066125",
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        "hash": "4526000532982363500",
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        "hash": "3056675647411681426",
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        "hash": "6736296154216506314",
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        "hash": "16549454808470393937",
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        "hash": "7399995801950690780",
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        "hash": "16679278330692180667",
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        "hash": "16325481087029526602",
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        "hash": "5194177701897075434",
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        "hash": "14631074336580137831",
        "name": "Caro-Kann: Bronstein-Larsen, 6.c3 Bf5"
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        "hash": "16116394427950988953",
        "name": "Caro-Kann: Bronstein-Larsen, 6.c3 Bf5 7.Ne2"
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        "hash": "1182450406749835866",
        "name": "Caro-Kann: Bronstein-Larsen, 6.c3 Bf5 7.Nf3"
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        "hash": "1618999261588643163",
        "name": "Caro-Kann: Bronstein-Larsen, 6.c3 Bf5 7.Nf3 Qc7"
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        "hash": "7358629248438206984",
        "name": "Caro-Kann: Bronstein-Larsen, 6.c3 Bf5 7.Nf3 e6"
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        "hash": "18025016513345994651",
        "name": "Caro-Kann: Steinitz Variation"
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        "hash": "2396290977903926950",
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        "hash": "8840391278015651632",
        "name": "Caro-Kann: Steinitz, 5.Nf3 Ngf6"
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        "hash": "4489223142158351745",
        "name": "Caro-Kann: Steinitz, 5.Nf3 Ngf6 6.Nxf6+"
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        "hash": "12133260003864360010",
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        "hash": "2031428991068617028",
        "name": "Sicilian: Grand Prix, Tal Defence"
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    "B21j": {
        "eco": "B21j",
        "fen": "rnbqkbnr/pp2pppp/8/2pP4/5P2/8/PPPP2PP/RNBQKBNR b KQkq - 0 3",
        "hash": "4318423909268224834",
        "name": "Sicilian: Grand Prix, Tal Defence, 3.exd5"
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    "B21k": {
        "eco": "B21k",
        "fen": "rnbqkb1r/pp2pppp/5n2/2pP4/5P2/8/PPPP2PP/RNBQKBNR w KQkq - 1 4",
        "hash": "6917576718698298068",
        "name": "Sicilian: Grand Prix, Tal Gambit"
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    "B21l": {
        "eco": "B21l",
        "fen": "rnbqkb1r/pp2pppp/5n2/1BpP4/5P2/8/PPPP2PP/RNBQK1NR b KQkq - 2 4",
        "hash": "6043543661177907543",
        "name": "Sicilian: Grand Prix, Tal Gambit, 4.Bb5+"
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    "B21m": {
        "eco": "B21m",
        "fen": "rnbqkbnr/pp1ppppp/8/2p5/3PP3/8/PPP2PPP/RNBQKBNR b KQkq d3 0 2",
        "hash": "11635161049092548521",
        "name": "Sicilian: Smith-Morra Gambit"
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    "B21n": {
        "eco": "B21n",
        "fen": "rnbqkbnr/pp1ppppp/8/8/3pP3/5N2/PPP2PPP/RNBQKB1R b KQkq - 1 3",
        "hash": "2666750653099765586",
        "name": "Sicilian: Smith-Morra, Morphy Gambit"
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    "B21o": {
        "eco": "B21o",
        "fen": "rnbqkbnr/pp1ppppp/8/8/3pP3/2P5/PP3PPP/RNBQKBNR b KQkq - 0 3",
        "hash": "9852794038369583593",
        "name": "Sicilian: Smith-Morra, 3.c3"
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    "B21p": {
        "eco": "B21p",
        "fen": "rnbqkb1r/pp1ppppp/5n2/8/3pP3/2P5/PP3PPP/RNBQKBNR w KQkq - 1 4",
        "hash": "15227254232687132799",
        "name": "Sicilian: Smith-Morra, 3.c3 Nf6"
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    "B21q": {
        "eco": "B21q",
        "fen": "rnbqkbnr/pp2pppp/8/3p4/3pP3/2P5/PP3PPP/RNBQKBNR w KQkq d6 0 4",
        "hash": "996990883558543311",
        "name": "Sicilian: Smith-Morra, 3.c3 d5"
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    "B21r": {
        "eco": "B21r",
        "fen": "rnbqkbnr/pp1ppppp/8/8/4P3/2Pp4/PP3PPP/RNBQKBNR w KQkq - 0 4",
        "hash": "1479445341041460209",
        "name": "Sicilian: Smith-Morra, 3.c3 d3"
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    "B21s": {
        "eco": "B21s",
        "fen": "rnbqkbnr/pp1ppppp/8/8/4P3/2p5/PP3PPP/RNBQKBNR w KQkq - 0 4",
        "hash": "5288221051116493689",
        "name": "Sicilian: Smith-Morra Accepted"
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    "B21t": {
        "eco": "B21t",
        "fen": "rnbqkbnr/pp2pppp/3p4/8/4P3/2N5/PP3PPP/R1BQKBNR w KQkq - 0 5",
        "hash": "18376863768464309702",
        "name": "Sicilian: Smith-Morra, 4.Nxc3 d6"
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    "B21u": {
        "eco": "B21u",
        "fen": "rnbqkbnr/pp1p1ppp/4p3/8/4P3/2N5/PP3PPP/R1BQKBNR w KQkq - 0 5",
        "hash": "12739232451240748281",
        "name": "Sicilian: Smith-Morra, 4.Nxc3 e6"
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    "B21v": {
        "eco": "B21v",
        "fen": "rnbqkbnr/pp1p1ppp/4p3/8/4P3/2N2N2/PP3PPP/R1BQKB1R b KQkq - 1 5",
        "hash": "7759197057720714692",
        "name": "Sicilian: Smith-Morra, 4.Nxc3 e6 5.Nf3"
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    "B21w": {
        "eco": "B21w",
        "fen": "r1bqkbnr/pp1ppppp/2n5/8/4P3/2N5/PP3PPP/R1BQKBNR w KQkq - 1 5",
        "hash": "7877062621682618792",
        "name": "Sicilian: Smith-Morra, 4.Nxc3 Nc6"
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    "B21x": {
        "eco": "B21x",
        "fen": "r1bqkbnr/pp1p1ppp/2n1p3/8/4P3/2N2N2/PP3PPP/R1BQKB1R w KQkq - 0 6",
        "hash": "13854176909969236167",
        "name": "Sicilian: Smith-Morra, 4.Nxc3 Nc6 5.Nf3 e6"
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    "B21y": {
        "eco": "B21y",
        "fen": "r1bqkbnr/pp2pppp/2np4/8/4P3/2N2N2/PP3PPP/R1BQKB1R w KQkq - 0 6",
        "hash": "10344355133662984696",
        "name": "Sicilian: Smith-Morra, 4.Nxc3 Nc6 5.Nf3 d6"
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    "B21z": {
        "eco": "B21z",
        "fen": "r1bqkb1r/pp3ppp/2nppn2/8/2B1P3/2N2N2/PP3PPP/R1BQ1RK1 w kq - 2 8",
        "hash": "13821971629587080586",
        "name": "Sicilian: Smith-Morra, 5.Nf3 d6 6.Bc4 e6 7.O-O Nf6"
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    "B22a": {
        "eco": "B22a",
        "fen": "rnbqkbnr/pp1ppppp/8/2p5/4P3/2P5/PP1P1PPP/RNBQKBNR b KQkq - 0 2",
        "hash": "1339735568848143725",
        "name": "Sicilian: Alapin"
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    "B22b": {
        "eco": "B22b",
        "fen": "r1bqkbnr/pp1ppppp/2n5/2p5/4P3/2P5/PP1P1PPP/RNBQKBNR w KQkq - 1 3",
        "hash": "13365111962627203182",
        "name": "Sicilian: Alapin, 2...Nc6"
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    "B22c": {
        "eco": "B22c",
        "fen": "rnbqkbnr/pp1p1ppp/4p3/2p5/4P3/2P5/PP1P1PPP/RNBQKBNR w KQkq - 0 3",
        "hash": "7268880544371627327",
        "name": "Sicilian: Alapin, 2...e6"
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    "B22d": {
        "eco": "B22d",
        "fen": "rnbqkbnr/pp1p1ppp/4p3/2p5/3PP3/2P5/PP3PPP/RNBQKBNR b KQkq d3 0 3",
        "hash": "11661349946250885245",
        "name": "Sicilian: Alapin, 2...e6 3.d4"
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    "B22e": {
        "eco": "B22e",
        "fen": "rnbqkbnr/pp2pppp/3p4/2p5/4P3/2P5/PP1P1PPP/RNBQKBNR w KQkq - 0 3",
        "hash": "3111182530072415232",
        "name": "Sicilian: Alapin, 2...d6"
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    "B22f": {
        "eco": "B22f",
        "fen": "rnbqkbnr/pp2pppp/8/2pp4/4P3/2P5/PP1P1PPP/RNBQKBNR w KQkq d6 0 3",
        "hash": "10952068689460071243",
        "name": "Sicilian: Alapin, 2...d5"
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    "B22g": {
        "eco": "B22g",
        "fen": "rnb1kbnr/pp3ppp/4p3/2pq4/3P4/2P5/PP3PPP/RNBQKBNR w KQkq - 0 5",
        "hash": "9749332831135631767",
        "name": "Sicilian: Alapin, 2...d5 3.exd5 Qxd5 4.d4 e6"
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    "B22h": {
        "eco": "B22h",
        "fen": "r1b1kbnr/pp2pppp/2n5/2pq4/3P4/2P5/PP3PPP/RNBQKBNR w KQkq - 1 5",
        "hash": "6545626217345170630",
        "name": "Sicilian: Alapin, 2...d5 3.exd5 Qxd5 4.d4 Nc6"
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    "B22i": {
        "eco": "B22i",
        "fen": "r3kbnr/pp2pppp/2n5/2pq4/3P2b1/2P2N2/PP3PPP/RNBQKB1R w KQkq - 3 6",
        "hash": "9467017875277796113",
        "name": "Sicilian: Alapin, 2...d5 3.exd5 Qxd5 4.d4 Nc6 5.Nf3 Bg4"
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    "B22j": {
        "eco": "B22j",
        "fen": "rnb1kb1r/pp2pppp/5n2/2pq4/3P4/2P5/PP3PPP/RNBQKBNR w KQkq - 1 5",
        "hash": "12309833439292184659",
        "name": "Sicilian: Alapin, 2...d5 3.exd5 Qxd5 4.d4 Nf6"
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    "B22k": {
        "eco": "B22k",
        "fen": "rn2kb1r/pp2pppp/5n2/2pq4/3P2b1/2P2N2/PP3PPP/RNBQKB1R w KQkq - 3 6",
        "hash": "8314338218067572612",
        "name": "Sicilian: Alapin, 2...d5 3.exd5 Qxd5 4.d4 Nf6 5.Nf3 Bg4"
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    "B22l": {
        "eco": "B22l",
        "fen": "rn2kb1r/pp3ppp/4pn2/2pq4/3P2b1/2P2N2/PP2BPPP/RNBQK2R w KQkq - 0 7",
        "hash": "8544743868578983285",
        "name": "Sicilian: Alapin, 2...d5 3.exd5 Qxd5 4.d4 Nf6 5.Nf3 Bg4 6.Be2 e6"
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    "B22m": {
        "eco": "B22m",
        "fen": "rnb1kb1r/pp3ppp/4pn2/2pq4/3P4/2P1BN2/PP3PPP/RN1QKB1R b KQkq - 1 6",
        "hash": "8416934550575428274",
        "name": "Sicilian: Alapin, 2...d5 3.exd5 Qxd5 4.d4 Nf6 5.Nf3 e6 6.Be3"
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    "B22n": {
        "eco": "B22n",
        "fen": "rnb1kb1r/pp3ppp/4pn2/2pq4/3P4/2P2N2/PP2BPPP/RNBQK2R b KQkq - 1 6",
        "hash": "8378610057031312287",
        "name": "Sicilian: Alapin, 2...d5 3.exd5 Qxd5 4.d4 Nf6 5.Nf3 e6 6.Be2"
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    "B22o": {
        "eco": "B22o",
        "fen": "rnbqkb1r/pp1ppppp/5n2/2p5/4P3/2P5/PP1P1PPP/RNBQKBNR w KQkq - 1 3",
        "hash": "5294410805014168827",
        "name": "Sicilian: Alapin, 2...Nf6"
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    "B22p": {
        "eco": "B22p",
        "fen": "rnbqkb1r/pp1ppppp/8/2pnP3/8/2P2N2/PP1P1PPP/RNBQKB1R b KQkq - 2 4",
        "hash": "3995998410114479639",
        "name": "Sicilian: Alapin, 2...Nf6 3.e5 Nd5 4.Nf3"
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    "B22q": {
        "eco": "B22q",
        "fen": "rnbqkb1r/pp1ppppp/8/3nP3/3p4/2P5/PP3PPP/RNBQKBNR w KQkq - 0 5",
        "hash": "8519642851640677294",
        "name": "Sicilian: Alapin, 2...Nf6 3.e5 Nd5 4.d4 cxd4"
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    "B22r": {
        "eco": "B22r",
        "fen": "rnbqkb1r/pp1ppppp/8/3nP3/3p4/2P2N2/PP3PPP/RNBQKB1R b KQkq - 1 5",
        "hash": "12492764358882587283",
        "name": "Sicilian: Alapin, 2...Nf6 3.e5 Nd5 4.d4 cxd4 5.Nf3"
    },
    "B22s": {
        "eco": "B22s",
        "fen": "r1bqkb1r/pp1ppppp/2n5/3nP3/2Bp4/2P2N2/PP3PPP/RNBQK2R b KQkq - 3 6",
        "hash": "7278197654474522934",
        "name": "Sicilian: Alapin, 2...Nf6 3.e5 Nd5 4.d4 cxd4 5.Nf3 Nc6 6.Bc4"
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    "B22t": {
        "eco": "B22t",
        "fen": "rnbqkb1r/pp1ppppp/8/3nP3/3P4/8/PP3PPP/RNBQKBNR b KQkq - 0 5",
        "hash": "15748260259897352072",
        "name": "Sicilian: Alapin, 2...Nf6, 5.cxd4"
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    "B22u": {
        "eco": "B22u",
        "fen": "r1bqkb1r/pp2pppp/2np4/3nP3/2BP4/5N2/PP3PPP/RNBQK2R b KQkq - 3 7",
        "hash": "17297509340019246205",
        "name": "Sicilian: Alapin, 2...Nf6, 5.cxd4 d6 6.Nf3 Nc6 7.Bc4"
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    "B22v": {
        "eco": "B22v",
        "fen": "rnbqkb1r/pp1p1ppp/4p3/3nP3/3P4/8/PP3PPP/RNBQKBNR w KQkq - 0 6",
        "hash": "12464553600434540506",
        "name": "Sicilian: Alapin, 2...Nf6, 5.cxd4 e6"
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    "B22w": {
        "eco": "B22w",
        "fen": "rnbqkb1r/pp3ppp/3pp3/3nP3/3P4/5N2/PP3PPP/RNBQKB1R w KQkq - 0 7",
        "hash": "5630774839375144842",
        "name": "Sicilian: Alapin, 2...Nf6, 5.cxd4 e6 6.Nf3 d6"
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    "B22x": {
        "eco": "B22x",
        "fen": "rnbqkb1r/p2p1ppp/1p2p3/3nP3/3P4/5N2/PP3PPP/RNBQKB1R w KQkq - 0 7",
        "hash": "2087234341562374524",
        "name": "Sicilian: Alapin, 2...Nf6, 5.cxd4 e6 6.Nf3 b6"
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    "B23a": {
        "eco": "B23a",
        "fen": "rnbqkbnr/pp1ppppp/8/2p5/4P3/2N5/PPPP1PPP/R1BQKBNR b KQkq - 1 2",
        "hash": "11518609555277006898",
        "name": "Sicilian: Closed"
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    "B23b": {
        "eco": "B23b",
        "fen": "rnbqkbnr/pp1ppp1p/6p1/2p5/4P3/2N5/PPPP1PPP/R1BQKBNR w KQkq - 0 3",
        "hash": "8533759476631296633",
        "name": "Sicilian: Closed"
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    "B23c": {
        "eco": "B23c",
        "fen": "rnbqkbnr/pp2pppp/3p4/2p5/4P3/2N5/PPPP1PPP/R1BQKBNR w KQkq - 0 3",
        "hash": "11988797974647701855",
        "name": "Sicilian: Closed"
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    "B23d": {
        "eco": "B23d",
        "fen": "rnbqkbnr/pp2pppp/3p4/2p5/4P3/2N3P1/PPPP1P1P/R1BQKBNR b KQkq - 0 3",
        "hash": "9981805798727833959",
        "name": "Sicilian: Closed"
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    "B23e": {
        "eco": "B23e",
        "fen": "rnbqkbnr/pp2pppp/3p4/2p5/4PP2/2N5/PPPP2PP/R1BQKBNR b KQkq f3 0 3",
        "hash": "6590658720703560918",
        "name": "Sicilian: Closed"
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    "B23f": {
        "eco": "B23f",
        "fen": "rnbqkbnr/pp1p1ppp/4p3/2p5/4P3/2N5/PPPP1PPP/R1BQKBNR w KQkq - 0 3",
        "hash": "16838290975453763680",
        "name": "Sicilian: Closed"
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    "B23g": {
        "eco": "B23g",
        "fen": "rnbqkbnr/pp1p1ppp/4p3/2p5/4PP2/2N5/PPPP2PP/R1BQKBNR b KQkq f3 0 3",
        "hash": "1494031109028537833",
        "name": "Sicilian: Closed"
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    "B23h": {
        "eco": "B23h",
        "fen": "rnbqkbnr/pp1p1ppp/4p3/2p5/4P3/2N5/PPPPNPPP/R1BQKB1R b KQkq - 1 3",
        "hash": "18233187729581888926",
        "name": "Sicilian: Closed"
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    "B23i": {
        "eco": "B23i",
        "fen": "rnbqkbnr/pp1p1ppp/4p3/2p5/4P3/2N3P1/PPPP1P1P/R1BQKBNR b KQkq - 0 3",
        "hash": "14216486525461430360",
        "name": "Sicilian: Closed"
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    "B23j": {
        "eco": "B23j",
        "fen": "rnbqkbnr/pp3ppp/4p3/2pp4/4P3/2N3P1/PPPP1P1P/R1BQKBNR w KQkq d6 0 4",
        "hash": "4621037608101072510",
        "name": "Sicilian: Closed, Korchnoi Variation"
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    "B23k": {
        "eco": "B23k",
        "fen": "r1bqkbnr/pp1ppppp/2n5/2p5/4P3/2N5/PPPP1PPP/R1BQKBNR w KQkq - 2 3",
        "hash": "3762628565848649009",
        "name": "Sicilian: Closed, 2...Nc6"
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    "B23l": {
        "eco": "B23l",
        "fen": "r1bqkbnr/pp1ppppp/2n5/1Bp5/4P3/2N5/PPPP1PPP/R1BQK1NR b KQkq - 3 3",
        "hash": "570086959443214002",
        "name": "Sicilian: Closed, 2...Nc6 3.Bb5"
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    "B23m": {
        "eco": "B23m",
        "fen": "r1bqkbnr/pp1ppppp/8/1Bp5/3nP3/2N5/PPPP1PPP/R1BQK1NR w KQkq - 4 4",
        "hash": "15029699360557743635",
        "name": "Sicilian: Closed, 2...Nc6 3.Bb5 Nd4"
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    "B23n": {
        "eco": "B23n",
        "fen": "r1bqkbnr/pp1ppppp/2n5/2p5/4P3/2N5/PPPPNPPP/R1BQKB1R b KQkq - 3 3",
        "hash": "2347326972927828175",
        "name": "Sicilian: Chameleon Variation"
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    "B23o": {
        "eco": "B23o",
        "fen": "r1bqkbnr/pp1ppppp/2n5/2p5/4PP2/2N5/PPPP2PP/R1BQKBNR b KQkq f3 0 3",
        "hash": "14493137427393433784",
        "name": "Sicilian: Closed, Grand Prix"
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    "B23p": {
        "eco": "B23p",
        "fen": "r1bqkbnr/pp2pp1p/2np2p1/2p5/4PP2/2N2N2/PPPP2PP/R1BQKB1R w KQkq - 0 5",
        "hash": "14000528503815400099",
        "name": "Sicilian: Closed, Grand Prix, 3...d6 4.Nf3 g6"
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    "B23q": {
        "eco": "B23q",
        "fen": "r1bqkbnr/pp1p1ppp/2n1p3/2p5/4PP2/2N5/PPPP2PP/R1BQKBNR w KQkq - 0 4",
        "hash": "13787213368644780266",
        "name": "Sicilian: Closed, Grand Prix, 3...e6"
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    "B23r": {
        "eco": "B23r",
        "fen": "r1bqkbnr/pp3ppp/2n1p3/2pp4/4PP2/2N2N2/PPPP2PP/R1BQKB1R w KQkq d6 0 5",
        "hash": "16237952070276411377",
        "name": "Sicilian: Closed, Grand Prix, 3...e6 4.Nf3 d5"
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    "B23s": {
        "eco": "B23s",
        "fen": "r1bqkbnr/pp1ppp1p/2n3p1/2p5/4PP2/2N5/PPPP2PP/R1BQKBNR w KQkq - 0 4",
        "hash": "2347964100089987827",
        "name": "Sicilian: Closed, Grand Prix, 3...g6"
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    "B23t": {
        "eco": "B23t",
        "fen": "r1bqk1nr/pp1pppbp/2n3p1/2p5/2B1PP2/2N2N2/PPPP2PP/R1BQK2R b KQkq - 3 5",
        "hash": "2954011161250086594",
        "name": "Sicilian: Closed, Grand Prix, 3...g6 4.Nf3 Bg7 5.Bc4"
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    "B23u": {
        "eco": "B23u",
        "fen": "r1bqk1nr/pp1p1pbp/2n1p1p1/2p5/2B1PP2/2N2N2/PPPP2PP/R1BQK2R w KQkq - 0 6",
        "hash": "6812032746961710736",
        "name": "Sicilian: Closed, Grand Prix, 3...g6 4.Nf3 Bg7 5.Bc4 e6"
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    "B23v": {
        "eco": "B23v",
        "fen": "r1bqk1nr/pp1p1pbp/2n1p1p1/2p2P2/2B1P3/2N2N2/PPPP2PP/R1BQK2R b KQkq - 0 6",
        "hash": "3821741953746476915",
        "name": "Sicilian: Closed, Grand Prix, Schofman Variation"
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    "B23w": {
        "eco": "B23w",
        "fen": "r1bqk1nr/pp1pppbp/2n3p1/1Bp5/4PP2/2N2N2/PPPP2PP/R1BQK2R b KQkq - 3 5",
        "hash": "8688468457258154983",
        "name": "Sicilian: Closed, Grand Prix, 3...g6 4.Nf3 Bg7 5.Bb5"
    },
    "B23x": {
        "eco": "B23x",
        "fen": "r1bqk1nr/pp1pppbp/6p1/2p5/3nPP2/2NB1N2/PPPP2PP/R1BQK2R b KQkq - 5 6",
        "hash": "3597142729537712063",
        "name": "Sicilian: Closed, Grand Prix, 3...g6 4.Nf3 Bg7 5.Bb5 Nd4 6.Bd3"
    },
    "B23y": {
        "eco": "B23y",
        "fen": "r1bqk1nr/pp1pppbp/6p1/1Bp5/3nPP2/2N2N2/PPPP2PP/R1BQ1RK1 b kq - 5 6",
        "hash": "15103863492118667350",
        "name": "Sicilian: Closed, Grand Prix, 3...g6 4.Nf3 Bg7 5.Bb5 Nd4 6.O-O"
    },
    "B24": {
        "eco": "B24",
        "fen": "r1bqkbnr/pp1ppppp/2n5/2p5/4P3/2N3P1/PPPP1P1P/R1BQKBNR b KQkq - 0 3",
        "hash": "1788265499167208713",
        "name": "Sicilian: Closed, 3.g3"
    },
    "B25a": {
        "eco": "B25a",
        "fen": "r1bqk1nr/pp2ppbp/2np2p1/2p5/4P3/2NP2P1/PPP2PBP/R1BQK1NR w KQkq - 0 6",
        "hash": "7149228955831092776",
        "name": "Sicilian: Closed, 3.g3, 5.d3 d6"
    },
    "B25b": {
        "eco": "B25b",
        "fen": "r1bqk1nr/pp2ppbp/2np2p1/2p5/4P3/2NP2P1/PPP1NPBP/R1BQK2R b KQkq - 1 6",
        "hash": "8616443904353684438",
        "name": "Sicilian: Closed, 3.g3, 5.d3 d6 6.Nge2"
    },
    "B25c": {
        "eco": "B25c",
        "fen": "r1bqk1nr/pp3pbp/2np2p1/2p1p3/4P3/2NP2P1/PPP1NPBP/R1BQK2R w KQkq e6 0 7",
        "hash": "18296940419720754144",
        "name": "Sicilian: Closed, Botvinnik"
    },
    "B25d": {
        "eco": "B25d",
        "fen": "r1bqk1nr/pp3pbp/2npp1p1/2p5/4P3/2NP2P1/PPP1NPBP/R1BQK2R w KQkq - 0 7",
        "hash": "136286825713392516",
        "name": "Sicilian: Closed, 3.g3, 5.d3 d6 6.Nge2 e6"
    },
    "B25e": {
        "eco": "B25e",
        "fen": "r1bqk1nr/pp2ppbp/2np2p1/2p5/4PP2/2NP2P1/PPP3BP/R1BQK1NR b KQkq f3 0 6",
        "hash": "11394481812264647585",
        "name": "Sicilian: Closed, 6.f4"
    },
    "B25f": {
        "eco": "B25f",
        "fen": "1rbqk1nr/pp2ppbp/2np2p1/2p5/4PP2/2NP2P1/PPP3BP/R1BQK1NR w KQk - 1 7",
        "hash": "1762061862390092290",
        "name": "Sicilian: Closed, 6.f4 Rb8"
    },
    "B25g": {
        "eco": "B25g",
        "fen": "r1bqk2r/pp2ppbp/2np1np1/2p5/4PP2/2NP2P1/PPP3BP/R1BQK1NR w KQkq - 1 7",
        "hash": "14253717052821125687",
        "name": "Sicilian: Closed, 6.f4 Nf6"
    },
    "B25h": {
        "eco": "B25h",
        "fen": "r1bqk2r/pp2ppbp/2np1np1/2p5/4PP2/2NP1NP1/PPP3BP/R1BQK2R b KQkq - 2 7",
        "hash": "2210014891676457738",
        "name": "Sicilian: Closed, 6.f4 Nf6 7.Nf3"
    },
    "B25i": {
        "eco": "B25i",
        "fen": "r1bqk1nr/pp3pbp/2np2p1/2p1p3/4PP2/2NP2P1/PPP3BP/R1BQK1NR w KQkq e6 0 7",
        "hash": "1466304982533473175",
        "name": "Sicilian: Closed, 6.f4 e5"
    },
    "B25j": {
        "eco": "B25j",
        "fen": "r1bqk1nr/pp3pbp/2np2p1/2p1p3/4PP2/2NP1NP1/PPP3BP/R1BQK2R b KQkq - 1 7",
        "hash": "14933285911036519082",
        "name": "Sicilian: Closed, 6.f4 e5 7.Nf3"
    },
    "B25k": {
        "eco": "B25k",
        "fen": "r1bqk2r/pp2npbp/2np2p1/2p1p3/4PP2/2NP1NP1/PPP3BP/R1BQ1RK1 b kq - 3 8",
        "hash": "10306338090441454087",
        "name": "Sicilian: Closed, 6.f4 e5 7.Nf3 Nge7 8.O-O"
    },
    "B25l": {
        "eco": "B25l",
        "fen": "r1bqk1nr/pp3pbp/2npp1p1/2p5/4PP2/2NP2P1/PPP3BP/R1BQK1NR w KQkq - 0 7",
        "hash": "16741752177668418547",
        "name": "Sicilian: Closed, 6.f4 e6"
    },
    "B25m": {
        "eco": "B25m",
        "fen": "r1bqk1nr/pp3pbp/2npp1p1/2p5/4PP2/2NP1NP1/PPP3BP/R1BQK2R b KQkq - 1 7",
        "hash": "3689092481702038222",
        "name": "Sicilian: Closed, 6.f4 e6"
    },
    "B25n": {
        "eco": "B25n",
        "fen": "r1bqk2r/pp2npbp/2npp1p1/2p5/4PP2/2NP1NP1/PPP3BP/R1BQK2R w KQkq - 2 8",
        "hash": "972204316278620531",
        "name": "Sicilian: Closed, 6.f4 e6"
    },
    "B25o": {
        "eco": "B25o",
        "fen": "r1bqk2r/pp2npbp/2npp1p1/2p5/4PP2/2NP1NP1/PPP3BP/R1BQ1RK1 b kq - 3 8",
        "hash": "8289030801439349347",
        "name": "Sicilian: Closed, 6.f4 e6"
    },
    "B25p": {
        "eco": "B25p",
        "fen": "r1bq1rk1/pp2npbp/2npp1p1/2p5/4PP2/2NP1NP1/PPP3BP/R1BQ1RK1 w - - 4 9",
        "hash": "8764110630132757384",
        "name": "Sicilian: Closed, 6.f4 e6"
    },
    "B25q": {
        "eco": "B25q",
        "fen": "r1bq1rk1/pp2npbp/2npp1p1/2p5/4PP2/2NPBNP1/PPP3BP/R2Q1RK1 b - - 5 9",
        "hash": "768105369455273990",
        "name": "Sicilian: Closed, 6.f4 e6: 9.Be3"
    },
    "B25r": {
        "eco": "B25r",
        "fen": "1rbq1rk1/pp2npbp/2npp1p1/2p5/4PP2/2NPBNP1/PPP3BP/R2Q1RK1 w - - 6 10",
        "hash": "10523628253234405228",
        "name": "Sicilian: Closed, 6.f4 e6: 9.Be3 Rb8"
    },
    "B25s": {
        "eco": "B25s",
        "fen": "r1bq1rk1/p3npbp/1pnpp1p1/2p5/4PP2/2NPBNP1/PPP3BP/R2Q1RK1 w - - 0 10",
        "hash": "7044072728981151645",
        "name": "Sicilian: Closed, 6.f4 e6: 9.Be3 b6"
    },
    "B25t": {
        "eco": "B25t",
        "fen": "r1bq1rk1/pp2npbp/3pp1p1/2p5/3nPP2/2NPBNP1/PPP3BP/R2Q1RK1 w - - 6 10",
        "hash": "15984883809853630631",
        "name": "Sicilian: Closed, 6.f4 e6: 9.Be3 Nd4"
    },
    "B25u": {
        "eco": "B25u",
        "fen": "r1bq1rk1/pp2npbp/3pp1p1/2p5/3nPP2/2NPBNP1/PPP3BP/1R1Q1RK1 b - - 7 10",
        "hash": "9215249107873541155",
        "name": "Sicilian: Closed, 6.f4 e6: 9.Be3 Nd4 10.Rb1"
    },
    "B25v": {
        "eco": "B25v",
        "fen": "r1bq1rk1/pp2npbp/3pp1p1/2p5/3nPP2/2NPBNP1/PPPQ2BP/R4RK1 b - - 7 10",
        "hash": "17712086335450134279",
        "name": "Sicilian: Closed, 6.f4 e6: 9.Be3 Nd4 10.Qd2"
    },
    "B25w": {
        "eco": "B25w",
        "fen": "r1bq1rk1/pp2npbp/3pp1p1/2p1P3/3n1P2/2NPBNP1/PPP3BP/R2Q1RK1 b - - 0 10",
        "hash": "13595419354981846723",
        "name": "Sicilian: Closed, 6.f4 e6: 9.Be3 Nd4 10.e5"
    },
    "B25x": {
        "eco": "B25x",
        "fen": "r1bq1rk1/pp3pbp/3pp1p1/2p1Pn2/3n1P2/2NPBNP1/PPP3BP/R2Q1RK1 w - - 1 11",
        "hash": "10488395857648661217",
        "name": "Sicilian: Closed, 6.f4 e6: 9.Be3 Nd4 10.e5 Nef5"
    },
    "B26a": {
        "eco": "B26a",
        "fen": "r1bqk1nr/pp2ppbp/2np2p1/2p5/4P3/2NPB1P1/PPP2PBP/R2QK1NR b KQkq - 1 6",
        "hash": "1170815197003505062",
        "name": "Sicilian: Closed, 6.Be3"
    },
    "B26b": {
        "eco": "B26b",
        "fen": "r1bqk2r/pp2ppbp/2np1np1/2p5/4P3/2NPB1P1/PPP2PBP/R2QK1NR w KQkq - 2 7",
        "hash": "5463331176322145328",
        "name": "Sicilian: Closed, 6.Be3 Nf6"
    },
    "B26c": {
        "eco": "B26c",
        "fen": "r1bqk2r/pp2ppbp/2np1np1/2p5/4P3/2NPB1PP/PPP2PB1/R2QK1NR b KQkq - 0 7",
        "hash": "11755093752117220802",
        "name": "Sicilian: Closed, 6.Be3 Nf6 7.h3"
    },
    "B26d": {
        "eco": "B26d",
        "fen": "r1bqk1nr/pp3pbp/2np2p1/2p1p3/4P3/2NPB1P1/PPP2PBP/R2QK1NR w KQkq e6 0 7",
        "hash": "11117024068876903824",
        "name": "Sicilian: Closed, 6.Be3 e5"
    },
    "B26e": {
        "eco": "B26e",
        "fen": "r1bqk1nr/pp3pbp/2np2p1/2p1p3/4P3/2NPB1P1/PPPQ1PBP/R3K1NR b KQkq - 1 7",
        "hash": "12853227100007168560",
        "name": "Sicilian: Closed, 6.Be3 e5 7.Qd2"
    },
    "B26f": {
        "eco": "B26f",
        "fen": "r1bqk2r/pp2npbp/2np2p1/2p1p3/4P3/2NPB1P1/PPPQ1PBP/R3K1NR w KQkq - 2 8",
        "hash": "10092682553007829389",
        "name": "Sicilian: Closed, 6.Be3 e5 7.Qd2 Nge7"
    },
    "B26g": {
        "eco": "B26g",
        "fen": "1rbqk1nr/pp2ppbp/2np2p1/2p5/4P3/2NPB1P1/PPP2PBP/R2QK1NR w KQk - 2 7",
        "hash": "10838720696065815557",
        "name": "Sicilian: Closed, 6.Be3 Rb8"
    },
    "B26h": {
        "eco": "B26h",
        "fen": "1rbqk1nr/pp2ppbp/2np2p1/2p5/4P3/2NPB1P1/PPPQ1PBP/R3K1NR b KQk - 3 7",
        "hash": "13723189910307122085",
        "name": "Sicilian: Closed, 6.Be3 Rb8 7.Qd2"
    },
    "B26i": {
        "eco": "B26i",
        "fen": "1rbqk1nr/p3ppbp/2np2p1/1pp5/4P3/2NPB1P1/PPPQ1PBP/R3K1NR w KQk b6 0 8",
        "hash": "16030275447278868120",
        "name": "Sicilian: Closed, 6.Be3 Rb8 7.Qd2 b5"
    },
    "B26j": {
        "eco": "B26j",
        "fen": "1rbqk1nr/p3ppbp/2np2p1/1pp5/4P3/2NPB1P1/PPPQNPBP/R3K2R b KQk - 1 8",
        "hash": "14614762816843946854",
        "name": "Sicilian: Closed, 6.Be3 Rb8 7.Qd2 b5 8.Nge2"
    },
    "B26k": {
        "eco": "B26k",
        "fen": "r1bqk1nr/pp3pbp/2npp1p1/2p5/4P3/2NPB1P1/PPP2PBP/R2QK1NR w KQkq - 0 7",
        "hash": "7370246373157326324",
        "name": "Sicilian: Closed, 6.Be3 e6"
    },
    "B26l": {
        "eco": "B26l",
        "fen": "r1bqk1nr/pp3pbp/2npp1p1/2p5/4P3/2NPB1P1/PPPQ1PBP/R3K1NR b KQkq - 1 7",
        "hash": "5643062599401509460",
        "name": "Sicilian: Closed, 6.Be3 e6 7.Qd2"
    },
    "B26m": {
        "eco": "B26m",
        "fen": "r1b1k1nr/pp3pbp/2npp1p1/q1p5/4P3/2NPB1P1/PPPQ1PBP/R3K1NR w KQkq - 2 8",
        "hash": "10890753737633870811",
        "name": "Sicilian: Closed, 6.Be3 e6 7.Qd2 Qa5"
    },
    "B26n": {
        "eco": "B26n",
        "fen": "r1bqk1nr/pp3pbp/3pp1p1/2p5/3nP3/2NPB1P1/PPPQ1PBP/R3K1NR w KQkq - 2 8",
        "hash": "11037552378073764597",
        "name": "Sicilian: Closed, 6.Be3 e6 7.Qd2 Nd4"
    },
    "B26o": {
        "eco": "B26o",
        "fen": "r1bqk2r/pp2npbp/2npp1p1/2p5/4P3/2NPB1P1/PPPQ1PBP/R3K1NR w KQkq - 2 8",
        "hash": "8079338110373534185",
        "name": "Sicilian: Closed, 6.Be3 e6 7.Qd2 Nge7"
    },
    "B26p": {
        "eco": "B26p",
        "fen": "1rbqk1nr/pp3pbp/2npp1p1/2p5/4P3/2NPB1P1/PPPQ1PBP/R3K1NR w KQk - 2 8",
        "hash": "14413034702689942519",
        "name": "Sicilian: Closed, 6.Be3 e6 7.Qd2 Rb8"
    },
    "B26q": {
        "eco": "B26q",
        "fen": "1rbqk1nr/pp3pbp/2npp1p1/2p5/4P3/2NPB1P1/PPPQNPBP/R3K2R b KQk - 3 8",
        "hash": "15898139333805028873",
        "name": "Sicilian: Closed, 6.Be3 e6 7.Qd2 Rb8 8.Nge2"
    },
    "B27a": {
        "eco": "B27a",
        "fen": "rnbqkbnr/pp1ppppp/8/2p5/4P3/5N2/PPPP1PPP/RNBQKB1R b KQkq - 1 2",
        "hash": "13774723490369252310",
        "name": "Sicilian: 2.Nf3"
    },
    "B27b": {
        "eco": "B27b",
        "fen": "rnb1kbnr/pp1ppppp/8/q1p5/4P3/5N2/PPPP1PPP/RNBQKB1R w KQkq - 2 3",
        "hash": "7375263774632184409",
        "name": "Sicilian: Mongoose Variation"
    },
    "B27c": {
        "eco": "B27c",
        "fen": "rnb1kbnr/ppqppppp/8/2p5/4P3/5N2/PPPP1PPP/RNBQKB1R w KQkq - 2 3",
        "hash": "13346022947248891095",
        "name": "Sicilian: Quinteros Variation"
    },
    "B27d": {
        "eco": "B27d",
        "fen": "rnbqkbnr/p2ppppp/1p6/2p5/4P3/5N2/PPPP1PPP/RNBQKB1R w KQkq - 0 3",
        "hash": "15294487223394868301",
        "name": "Sicilian: Katalimov Variation"
    },
    "B27e": {
        "eco": "B27e",
        "fen": "rnbqkbnr/pp1ppp1p/6p1/2p5/4P3/5N2/PPPP1PPP/RNBQKB1R w KQkq - 0 3",
        "hash": "6241414395725855133",
        "name": "Sicilian: Hungarian Variation"
    },
    "B27f": {
        "eco": "B27f",
        "fen": "rnbqkbnr/pp1ppp1p/6p1/2p5/2P1P3/5N2/PP1P1PPP/RNBQKB1R b KQkq c3 0 3",
        "hash": "15762152806555849370",
        "name": "Sicilian: Hungarian, 3.c4"
    },
    "B27g": {
        "eco": "B27g",
        "fen": "rnbqkbnr/pp1ppp1p/6p1/2p5/4P3/2P2N2/PP1P1PPP/RNBQKB1R b KQkq - 0 3",
        "hash": "2325842901332899355",
        "name": "Sicilian: Hungarian, 3.c3"
    },
    "B27h": {
        "eco": "B27h",
        "fen": "rnbqk1nr/pp1pppbp/6p1/8/3PP3/5N2/PP3PPP/RNBQKB1R b KQkq - 0 5",
        "hash": "11990394951396308243",
        "name": "Sicilian: Hungarian, 3.c3 Bg7 4.d4 cxd4 5.cxd4"
    },
    "B27i": {
        "eco": "B27i",
        "fen": "rnbqk1nr/pp2ppbp/6p1/3p4/3PP3/5N2/PP3PPP/RNBQKB1R w KQkq d6 0 6",
        "hash": "2525484452789451573",
        "name": "Sicilian: Hungarian, 3.c3 Bg7 4.d4 cxd4 5.cxd4 d5"
    },
    "B27j": {
        "eco": "B27j",
        "fen": "rnbqkbnr/pp1ppp1p/6p1/2p5/3PP3/5N2/PPP2PPP/RNBQKB1R b KQkq d3 0 3",
        "hash": "10639994882660668639",
        "name": "Sicilian: Hungarian, 3.d4"
    },
    "B27k": {
        "eco": "B27k",
        "fen": "rnbqkbnr/pp1ppp1p/6p1/8/3pP3/5N2/PPP2PPP/RNBQKB1R w KQkq - 0 4",
        "hash": "14751084060885581081",
        "name": "Sicilian: Hungarian, 3.d4 cxd4"
    },
    "B27l": {
        "eco": "B27l",
        "fen": "rnbqkbnr/pp1ppp1p/6p1/8/3NP3/8/PPP2PPP/RNBQKB1R b KQkq - 0 4",
        "hash": "12331486424488701751",
        "name": "Sicilian: Hungarian, 3.d4 cxd4 4.Nxd4"
    },
    "B27m": {
        "eco": "B27m",
        "fen": "rnbqk1nr/pp1pppbp/6p1/2p5/3PP3/5N2/PPP2PPP/RNBQKB1R w KQkq - 1 4",
        "hash": "2527899621572829045",
        "name": "Sicilian: Accelerated Pterodactyl"
    },
    "B27n": {
        "eco": "B27n",
        "fen": "rnbqk1nr/pp1pppbp/6p1/2P5/4P3/5N2/PPP2PPP/RNBQKB1R b KQkq - 0 4",
        "hash": "6699040257841367065",
        "name": "Sicilian: Accelerated Pterodactyl, 4.dxc5"
    },
    "B27o": {
        "eco": "B27o",
        "fen": "rnb1k1nr/pp1pppbp/6p1/q1P5/4P3/5N2/PPP2PPP/RNBQKB1R w KQkq - 1 5",
        "hash": "9620903509698226582",
        "name": "Sicilian: Accelerated Pterodactyl, 4.dxc5 Qa5+"
    },
    "B27p": {
        "eco": "B27p",
        "fen": "rnb1k1nr/pp1pppbp/6p1/q1P5/4P3/2N2N2/PPP2PPP/R1BQKB1R b KQkq - 2 5",
        "hash": "9084684478193707855",
        "name": "Sicilian: Accelerated Pterodactyl, 4.dxc5 Qa5+ 5.Nc3"
    },
    "B27q": {
        "eco": "B27q",
        "fen": "rnb1k1nr/pp1pppbp/6p1/q1P5/4P3/2P2N2/PP3PPP/RNBQKB1R b KQkq - 0 5",
        "hash": "17536639113756616208",
        "name": "Sicilian: Accelerated Pterodactyl, 4.dxc5 Qa5+ 5.c3"
    },
    "B27r": {
        "eco": "B27r",
        "fen": "rnb1k1nr/pp1pppbp/6p1/2q5/4P3/2P2N2/PP3PPP/RNBQKB1R w KQkq - 0 6",
        "hash": "12899057189339708900",
        "name": "Sicilian: Accelerated Pterodactyl, 4.dxc5 Qa5+ 5.c3"
    },
    "B27s": {
        "eco": "B27s",
        "fen": "rnbqk1nr/pp1pppbp/6p1/2p5/2PPP3/5N2/PP3PPP/RNBQKB1R b KQkq c3 0 4",
        "hash": "12625692484412830834",
        "name": "Sicilian: Accelerated Pterodactyl, 4.c4"
    },
    "B27t": {
        "eco": "B27t",
        "fen": "rnb1k1nr/pp1pppbp/6p1/q1p5/2PPP3/5N2/PP3PPP/RNBQKB1R w KQkq - 1 5",
        "hash": "8522197185604670973",
        "name": "Sicilian: Accelerated Pterodactyl, 4.c4 Qa5+"
    },
    "B28a": {
        "eco": "B28a",
        "fen": "rnbqkbnr/1p1ppppp/p7/2p5/4P3/5N2/PPPP1PPP/RNBQKB1R w KQkq - 0 3",
        "hash": "7916861932887397130",
        "name": "Sicilian: O'Kelly Variation"
    },
    "B28b": {
        "eco": "B28b",
        "fen": "rnbqkbnr/1p1ppppp/p7/2p5/4P3/2N2N2/PPPP1PPP/R1BQKB1R b KQkq - 1 3",
        "hash": "10829274023992644051",
        "name": "Sicilian: O'Kelly, 3.Nc3"
    },
    "B28c": {
        "eco": "B28c",
        "fen": "rnbqkbnr/1p1ppppp/p7/2p5/3PP3/5N2/PPP2PPP/RNBQKB1R b KQkq d3 0 3",
        "hash": "12171954709809725000",
        "name": "Sicilian: O'Kelly, 3.d4"
    },
    "B28d": {
        "eco": "B28d",
        "fen": "rnbqkbnr/1p1ppppp/p7/8/3NP3/8/PPP2PPP/RNBQKB1R b KQkq - 0 4",
        "hash": "10403771685401265568",
        "name": "Sicilian: O'Kelly, 3.d4 cxd4 4.Nxd4"
    },
    "B28e": {
        "eco": "B28e",
        "fen": "rnbqkb1r/1p1ppppp/p4n2/8/3NP3/8/PPP2PPP/RNBQKB1R w KQkq - 1 5",
        "hash": "14668131405597656118",
        "name": "Sicilian: O'Kelly, 3.d4 cxd4 4.Nxd4 Nf6"
    },
    "B28f": {
        "eco": "B28f",
        "fen": "rnbqkbnr/1p1ppppp/p7/2p5/2P1P3/5N2/PP1P1PPP/RNBQKB1R b KQkq c3 0 3",
        "hash": "16284392691211401229",
        "name": "Sicilian: O'Kelly, 3.c4"
    },
    "B28g": {
        "eco": "B28g",
        "fen": "rnbqkbnr/1p1p1ppp/p3p3/2p5/2P1P3/5N2/PP1P1PPP/RNBQKB1R w KQkq - 0 4",
        "hash": "10919605043992586335",
        "name": "Sicilian: O'Kelly, 3.c4 e6"
    },
    "B28h": {
        "eco": "B28h",
        "fen": "rnbqkbnr/1p1ppppp/p7/2p5/4P3/2P2N2/PP1P1PPP/RNBQKB1R b KQkq - 0 3",
        "hash": "1946873780242537612",
        "name": "Sicilian: O'Kelly, 3.c3"
    },
    "B28i": {
        "eco": "B28i",
        "fen": "rnbqkbnr/1p1p1ppp/p3p3/2p5/4P3/2P2N2/PP1P1PPP/RNBQKB1R w KQkq - 0 4",
        "hash": "7886749980394933470",
        "name": "Sicilian: O'Kelly, 3.c3 e6"
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    "B28j": {
        "eco": "B28j",
        "fen": "rnbqkbnr/1p2pppp/p7/2pp4/4P3/2P2N2/PP1P1PPP/RNBQKB1R w KQkq d6 0 4",
        "hash": "11416217650912858794",
        "name": "Sicilian: O'Kelly, 3.c3 d5"
    },
    "B29a": {
        "eco": "B29a",
        "fen": "rnbqkb1r/pp1ppppp/5n2/2p5/4P3/5N2/PPPP1PPP/RNBQKB1R w KQkq - 2 3",
        "hash": "16485306579680913984",
        "name": "Sicilian: Nimzowitsch"
    },
    "B29b": {
        "eco": "B29b",
        "fen": "rnbqkb1r/pp1ppppp/5n2/2p5/4P3/3P1N2/PPP2PPP/RNBQKB1R b KQkq - 0 3",
        "hash": "5360217215953719700",
        "name": "Sicilian: Nimzowitsch, 3.d3"
    },
    "B29c": {
        "eco": "B29c",
        "fen": "rnbqkb1r/pp1ppppp/5n2/2p5/4P3/2N2N2/PPPP1PPP/R1BQKB1R b KQkq - 3 3",
        "hash": "2256455554034100377",
        "name": "Sicilian: Nimzowitsch, 3.Nc3"
    },
    "B29d": {
        "eco": "B29d",
        "fen": "rnbqkb1r/pp2pppp/5n2/2pp4/4P3/2N2N2/PPPP1PPP/R1BQKB1R w KQkq d6 0 4",
        "hash": "11113380073141216959",
        "name": "Sicilian: Nimzowitsch, 3.Nc3 d5"
    },
    "B29e": {
        "eco": "B29e",
        "fen": "rnbqkb1r/pp2pppp/5n2/2pP4/8/2N2N2/PPPP1PPP/R1BQKB1R b KQkq - 0 4",
        "hash": "13683521190614000825",
        "name": "Sicilian: Nimzowitsch, 3.Nc3 d5 4.exd5"
    },
    "B29f": {
        "eco": "B29f",
        "fen": "rnbqkb1r/pp1ppppp/5n2/2p1P3/8/5N2/PPPP1PPP/RNBQKB1R b KQkq - 0 3",
        "hash": "9637285391431388196",
        "name": "Sicilian: Nimzowitsch, 3.e5"
    },
    "B29g": {
        "eco": "B29g",
        "fen": "rnbqkb1r/pp1ppppp/8/2pnP3/2P5/5N2/PP1P1PPP/RNBQKB1R b KQkq c3 0 4",
        "hash": "14811711204276933270",
        "name": "Sicilian: Nimzowitsch, 4.c4"
    },
    "B29h": {
        "eco": "B29h",
        "fen": "rnbqkb1r/pp1ppppp/8/2pnP3/3P4/5N2/PPP2PPP/RNBQKB1R b KQkq d3 0 4",
        "hash": "9555358934703740115",
        "name": "Sicilian: Nimzowitsch, 4.d4"
    },
    "B29i": {
        "eco": "B29i",
        "fen": "rnbqkb1r/pp1ppppp/8/2pnP3/8/2N2N2/PPPP1PPP/R1BQKB1R b KQkq - 2 4",
        "hash": "13418830626328722248",
        "name": "Sicilian: Nimzowitsch, 4.Nc3"
    },
    "B29j": {
        "eco": "B29j",
        "fen": "rnbqkb1r/pp1ppppp/8/2p1P3/8/2n2N2/PPPP1PPP/R1BQKB1R w KQkq - 0 5",
        "hash": "17773576512049624330",
        "name": "Sicilian: Nimzowitsch, 4.Nc3 Nxc3"
    },
    "B29k": {
        "eco": "B29k",
        "fen": "rnbqkb1r/pp1p1ppp/4p3/2pnP3/8/2N2N2/PPPP1PPP/R1BQKB1R w KQkq - 0 5",
        "hash": "14721899304358128410",
        "name": "Sicilian: Nimzowitsch, 4.Nc3 e6"
    },
    "B29l": {
        "eco": "B29l",
        "fen": "rnbqkb1r/pp1p1ppp/4p3/2pNP3/8/5N2/PPPP1PPP/R1BQKB1R b KQkq - 0 5",
        "hash": "2120220585990164156",
        "name": "Sicilian: Nimzowitsch, 4.Nc3 e6 5.Nxd5"
    },
    "B29m": {
        "eco": "B29m",
        "fen": "r1bqkb1r/pp1p1ppp/2n5/2ppP3/3P4/5N2/PPP2PPP/R1BQKB1R w KQkq - 1 7",
        "hash": "6070784754735186381",
        "name": "Sicilian: Nimzowitsch, Rubinstein Countergambit"
    },
    "B29n": {
        "eco": "B29n",
        "fen": "r1bqkb1r/pp1p1ppp/2n5/2PpP3/8/5N2/PPP2PPP/R1BQKB1R b KQkq - 0 7",
        "hash": "3160647608532555425",
        "name": "Sicilian: Nimzowitsch, Rubinstein Countergambit, 7.dxc5"
    },
    "B30a": {
        "eco": "B30a",
        "fen": "r1bqkbnr/pp1ppppp/2n5/2p5/4P3/5N2/PPPP1PPP/RNBQKB1R w KQkq - 2 3",
        "hash": "1496460521747091157",
        "name": "Sicilian: 2...Nc6"
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    "B30b": {
        "eco": "B30b",
        "fen": "r1bqkbnr/pp1ppppp/2n5/2p5/4P3/1P3N2/P1PP1PPP/RNBQKB1R b KQkq - 0 3",
        "hash": "10980372645587772856",
        "name": "Sicilian: 2...Nc6 3.b3"
    },
    "B30c": {
        "eco": "B30c",
        "fen": "r1bqkbnr/pp1ppppp/2n5/2p5/4P3/3P1N2/PPP2PPP/RNBQKB1R b KQkq - 0 3",
        "hash": "13429942168167986433",
        "name": "Sicilian: 2...Nc6 3.d3"
    },
    "B30d": {
        "eco": "B30d",
        "fen": "r1bqkbnr/pp1ppppp/2n5/2p5/4P3/5NP1/PPPP1P1P/RNBQKB1R b KQkq - 0 3",
        "hash": "4045012756178818797",
        "name": "Sicilian: 2...Nc6 3.g3"
    },
    "B30e": {
        "eco": "B30e",
        "fen": "r1bqkbnr/pp1p1ppp/2n1p3/2p5/4P3/3P1NP1/PPP2P1P/RNBQKB1R b KQkq - 0 4",
        "hash": "16209005157365874027",
        "name": "Sicilian: 2...Nc6 3.g3 e6 4.d3"
    },
    "B30f": {
        "eco": "B30f",
        "fen": "r1bqkbnr/pp3ppp/2n1p3/2pp4/4P3/3P1NP1/PPP2P1P/RNBQKB1R w KQkq d6 0 5",
        "hash": "7321681307087418189",
        "name": "Sicilian: 2...Nc6 3.g3 e6 4.d3 d5"
    },
    "B30g": {
        "eco": "B30g",
        "fen": "r1bqkbnr/pp1ppppp/2n5/2p5/2B1P3/5N2/PPPP1PPP/RNBQK2R b KQkq - 3 3",
        "hash": "8608572148713412723",
        "name": "Sicilian: 2...Nc6 3.Bc4"
    },
    "B30h": {
        "eco": "B30h",
        "fen": "r1bqkbnr/pp1ppppp/2n5/2p5/4P3/2N2N2/PPPP1PPP/R1BQKB1R b KQkq - 3 3",
        "hash": "17245239860672007180",
        "name": "Sicilian: 2...Nc6 3.Nc3"
    },
    "B30i": {
        "eco": "B30i",
        "fen": "r1bqkbnr/pp1ppp1p/2n3p1/2p5/4P3/2N2N2/PPPP1PPP/R1BQKB1R w KQkq - 0 4",
        "hash": "497424642828181063",
        "name": "Sicilian: 2...Nc6 3.Nc3 g6"
    },
    "B30j": {
        "eco": "B30j",
        "fen": "r1bqkbnr/pp1p1ppp/2n5/2p1p3/4P3/2N2N2/PPPP1PPP/R1BQKB1R w KQkq e6 0 4",
        "hash": "7290041377405465658",
        "name": "Sicilian: 2...Nc6 3.Nc3 e5"
    },
    "B30k": {
        "eco": "B30k",
        "fen": "r1bqkbnr/pp1ppppp/2n5/1Bp5/4P3/5N2/PPPP1PPP/RNBQK2R b KQkq - 3 3",
        "hash": "2817757228276456790",
        "name": "Sicilian: Rossolimo"
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    "B30l": {
        "eco": "B30l",
        "fen": "r1b1kbnr/pp1ppppp/1qn5/1Bp5/4P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4",
        "hash": "16205447975487327116",
        "name": "Sicilian: Rossolimo, 3...Qb6"
    },
    "B30m": {
        "eco": "B30m",
        "fen": "r1bqkb1r/pp1ppppp/2n2n2/1Bp5/4P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4",
        "hash": "9003992738245336256",
        "name": "Sicilian: Rossolimo, 3...Nf6"
    },
    "B30n": {
        "eco": "B30n",
        "fen": "r1bqkbnr/pp1p1ppp/2n1p3/1Bp5/4P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 0 4",
        "hash": "5867448642441809156",
        "name": "Sicilian: Rossolimo, 3...e6"
    },
    "B30o": {
        "eco": "B30o",
        "fen": "r1bqkbnr/pp1p1ppp/2n1p3/1Bp5/4P3/1P3N2/P1PP1PPP/RNBQK2R b KQkq - 0 4",
        "hash": "15981934913995335273",
        "name": "Sicilian: Rossolimo, 3...e6 4.b3"
    },
    "B30p": {
        "eco": "B30p",
        "fen": "r1bqkbnr/pp1p1ppp/2n1p3/1Bp5/4P3/2N2N2/PPPP1PPP/R1BQK2R b KQkq - 1 4",
        "hash": "12320236519346737117",
        "name": "Sicilian: Rossolimo, 3...e6 4.Nc3"
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    "B30q": {
        "eco": "B30q",
        "fen": "r1bqkbnr/pp1p1ppp/2B1p3/2p5/4P3/5N2/PPPP1PPP/RNBQK2R b KQkq - 0 4",
        "hash": "18691227922816319",
        "name": "Sicilian: Rossolimo, 3...e6 4.Bxc6"
    },
    "B30r": {
        "eco": "B30r",
        "fen": "r1bqkbnr/pp1p1ppp/2n1p3/1Bp5/4P3/5N2/PPPP1PPP/RNBQ1RK1 b kq - 1 4",
        "hash": "3393504377596827156",
        "name": "Sicilian: Rossolimo, 3...e6 4.O-O"
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    "B30s": {
        "eco": "B30s",
        "fen": "r1bqkb1r/pp1pnppp/2n1p3/1Bp5/4P3/5N2/PPPP1PPP/RNBQ1RK1 w kq - 2 5",
        "hash": "1249637836289596841",
        "name": "Sicilian: Rossolimo, 3...e6 4.O-O Nge7"
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    "B30t": {
        "eco": "B30t",
        "fen": "r1bqkb1r/pp1pnppp/2n1p3/1Bp5/4P3/5N2/PPPP1PPP/RNBQR1K1 b kq - 3 5",
        "hash": "10800639567070590653",
        "name": "Sicilian: Rossolimo, 3...e6 4.O-O Nge7 5.Re1"
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    "B30u": {
        "eco": "B30u",
        "fen": "r1bqkb1r/pp1pnppp/2n1p3/1Bp5/4P3/2N2N2/PPPP1PPP/R1BQ1RK1 b kq - 3 5",
        "hash": "16915663544988426096",
        "name": "Sicilian: Rossolimo, 3...e6 4.O-O Nge7 5.Nc3"
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    "B30v": {
        "eco": "B30v",
        "fen": "r1bqkb1r/pp1pnppp/2n1p3/1Bp5/4P3/2P2N2/PP1P1PPP/RNBQ1RK1 b kq - 0 5",
        "hash": "7461728343849554479",
        "name": "Sicilian: Rossolimo, 3...e6 4.O-O Nge7 5.c3"
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    "B30w": {
        "eco": "B30w",
        "fen": "r1bqkb1r/1p1pnppp/p1n1p3/1Bp5/4P3/2P2N2/PP1P1PPP/RNBQ1RK1 w kq - 0 6",
        "hash": "13076926744617626355",
        "name": "Sicilian: Rossolimo, 3...e6 4.O-O Nge7 5.c3 a6"
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    "B31a": {
        "eco": "B31a",
        "fen": "r1bqkbnr/pp1ppp1p/2n3p1/1Bp5/4P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 0 4",
        "hash": "14893118225238363933",
        "name": "Sicilian: Rossolimo, 3...g6"
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    "B31b": {
        "eco": "B31b",
        "fen": "r1bqkbnr/pp1ppp1p/2n3p1/1Bp5/4P3/2N2N2/PPPP1PPP/R1BQK2R b KQkq - 1 4",
        "hash": "3835348056603626948",
        "name": "Sicilian: Rossolimo, 3...g6 4.Nc3"
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    "B31c": {
        "eco": "B31c",
        "fen": "r1bqkbnr/pp1ppp1p/2B3p1/2p5/4P3/5N2/PPPP1PPP/RNBQK2R b KQkq - 0 4",
        "hash": "11493686495759064870",
        "name": "Sicilian: Rossolimo, 3...g6 4.Bxc6"
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    "B31d": {
        "eco": "B31d",
        "fen": "r1bqkbnr/pp2pp1p/2p3p1/2p5/4P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 0 5",
        "hash": "12200784307308905817",
        "name": "Sicilian: Rossolimo, 3...g6 4.Bxc6 dxc6"
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    "B31e": {
        "eco": "B31e",
        "fen": "r1bqkbnr/pp2pp1p/2p3p1/2p5/4P3/3P1N2/PPP2PPP/RNBQK2R b KQkq - 0 5",
        "hash": "573407933016997517",
        "name": "Sicilian: Rossolimo, 3...g6 4.Bxc6 dxc6 5.d3"
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    "B31f": {
        "eco": "B31f",
        "fen": "r1bqk1nr/pp2ppbp/2p3p1/2p5/4P3/3P1N1P/PPP2PP1/RNBQK2R b KQkq - 0 6",
        "hash": "6898045072369679573",
        "name": "Sicilian: Rossolimo, 3...g6 4.Bxc6 dxc6 5.d3 Bg7 6.h3"
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    "B31g": {
        "eco": "B31g",
        "fen": "r1bqkbnr/pp1ppp1p/2n3p1/1Bp5/4P3/5N2/PPPP1PPP/RNBQ1RK1 b kq - 1 4",
        "hash": "12743928185465951245",
        "name": "Sicilian: Rossolimo, 3...g6 4.O-O"
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    "B31h": {
        "eco": "B31h",
        "fen": "r1bqk1nr/pp1pppbp/2n3p1/1Bp5/4P3/2P2N2/PP1P1PPP/RNBQ1RK1 b kq - 0 5",
        "hash": "8556067452876656673",
        "name": "Sicilian: Rossolimo, 3...g6 4.O-O Bg7 5.c3"
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    "B31i": {
        "eco": "B31i",
        "fen": "r1bqk1nr/pp1p1pbp/2n3p1/1Bp1p3/4P3/2P2N2/PP1P1PPP/RNBQ1RK1 w kq e6 0 6",
        "hash": "18214045969540671511",
        "name": "Sicilian: Rossolimo, 3...g6 4.O-O Bg7 5.c3 e5"
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    "B31j": {
        "eco": "B31j",
        "fen": "r1bqk1nr/pp1pppbp/2n3p1/1Bp5/4P3/5N2/PPPP1PPP/RNBQR1K1 b kq - 3 5",
        "hash": "9571191645666686131",
        "name": "Sicilian: Rossolimo, 3...g6 4.O-O Bg7 5.Re1"
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    "B31k": {
        "eco": "B31k",
        "fen": "r1bqk2r/pp1pppbp/2n2np1/1Bp5/4P3/5N2/PPPP1PPP/RNBQR1K1 w kq - 4 6",
        "hash": "16086155155558135077",
        "name": "Sicilian: Rossolimo, 3...g6 4.O-O Bg7 5.Re1 Nf6"
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    "B31l": {
        "eco": "B31l",
        "fen": "r1bqk2r/pp1pppbp/2n2np1/1Bp5/4P3/2P2N2/PP1P1PPP/RNBQR1K1 b kq - 0 6",
        "hash": "12242886577825282723",
        "name": "Sicilian: Rossolimo, 3...g6 4.O-O Bg7 5.Re1 Nf6 6.c3"
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    "B31m": {
        "eco": "B31m",
        "fen": "r1bq1rk1/pp1pppbp/2n2np1/1Bp5/4P3/2P2N1P/PP1P1PP1/RNBQR1K1 b - - 0 7",
        "hash": "5457316507481955002",
        "name": "Sicilian: Rossolimo, 3...g6 4.O-O Bg7 5.Re1 Nf6 6.c3 O-O 7.h3"
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    "B31n": {
        "eco": "B31n",
        "fen": "r1bq1rk1/pp1pppbp/2n2np1/1Bp5/3PP3/2P2N2/PP3PPP/RNBQR1K1 b - d3 0 7",
        "hash": "7384419494266715658",
        "name": "Sicilian: Rossolimo, 3...g6 4.O-O Bg7 5.Re1 Nf6 6.c3 O-O 7.d4"
    },
    "B31o": {
        "eco": "B31o",
        "fen": "r1bqk1nr/pp1p1pbp/2n3p1/1Bp1p3/4P3/5N2/PPPP1PPP/RNBQR1K1 w kq e6 0 6",
        "hash": "1057145649306520709",
        "name": "Sicilian: Rossolimo, 3...g6 4.O-O Bg7 5.Re1 e5"
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    "B31p": {
        "eco": "B31p",
        "fen": "r1bqk1nr/pp1p1pbp/2n3p1/1Bp1p3/1P2P3/5N2/P1PP1PPP/RNBQR1K1 b kq b3 0 6",
        "hash": "11844126108305170593",
        "name": "Sicilian: Rossolimo, Gurgenidze Variation"
    },
    "B31q": {
        "eco": "B31q",
        "fen": "r1bqk1nr/pp1p1pbp/2n3p1/1Bp1p3/4P3/2P2N2/PP1P1PPP/RNBQR1K1 b kq - 0 6",
        "hash": "8678793570468217603",
        "name": "Sicilian: Rossolimo, 3...g6 4.O-O Bg7 5.Re1 e5"
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    "B32a": {
        "eco": "B32a",
        "fen": "r1bqkbnr/pp1ppppp/2n5/2p5/3PP3/5N2/PPP2PPP/RNBQKB1R b KQkq d3 0 3",
        "hash": "15127961960427594647",
        "name": "Sicilian: 2...Nc6 3.d4"
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    "B32b": {
        "eco": "B32b",
        "fen": "r1bqkbnr/pp1ppppp/2n5/8/3pP3/5N2/PPP2PPP/RNBQKB1R w KQkq - 0 4",
        "hash": "10299709760951077457",
        "name": "Sicilian: 2...Nc6 3.d4 cxd4"
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    "B32c": {
        "eco": "B32c",
        "fen": "r1bqkbnr/pp1ppppp/2n5/8/3NP3/8/PPP2PPP/RNBQKB1R b KQkq - 0 4",
        "hash": "16824241115991201919",
        "name": "Sicilian: Open, 2...Nc6"
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    "B32d": {
        "eco": "B32d",
        "fen": "r1bqkbnr/pp2pppp/2np4/8/3NP3/8/PPP2PPP/RNBQKB1R w KQkq - 0 5",
        "hash": "15042339731861213458",
        "name": "Sicilian: Open, 2...Nc6, 4...d6"
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    "B32e": {
        "eco": "B32e",
        "fen": "r1b1kbnr/pp1ppppp/1qn5/8/3NP3/8/PPP2PPP/RNBQKB1R w KQkq - 1 5",
        "hash": "3351883736397811365",
        "name": "Sicilian: Open, 2...Nc6, 4...Qb6"
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    "B32f": {
        "eco": "B32f",
        "fen": "r1b1kbnr/ppqppppp/2n5/8/3NP3/8/PPP2PPP/RNBQKB1R w KQkq - 1 5",
        "hash": "17250063146268628862",
        "name": "Sicilian: Flohr Variation"
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    "B32g": {
        "eco": "B32g",
        "fen": "r1b1kbnr/ppqppppp/2n5/1N6/4P3/8/PPP2PPP/RNBQKB1R b KQkq - 2 5",
        "hash": "1877547377619250472",
        "name": "Sicilian: Flohr, 5.Nb5"
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    "B32h": {
        "eco": "B32h",
        "fen": "r1bqkbnr/pp2pppp/2n5/3p4/3NP3/8/PPP2PPP/RNBQKB1R w KQkq d6 0 5",
        "hash": "7787168218719262297",
        "name": "Sicilian: 2..Nc6, Nimzowitsch Variation"
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    "B32i": {
        "eco": "B32i",
        "fen": "r1bqkbnr/pp1p1ppp/2n5/4p3/3NP3/8/PPP2PPP/RNBQKB1R w KQkq e6 0 5",
        "hash": "7134755565314023497",
        "name": "Sicilian: Lowenthal"
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    "B32j": {
        "eco": "B32j",
        "fen": "r1bqkbnr/pp1p1ppp/2n5/1N2p3/4P3/8/PPP2PPP/RNBQKB1R b KQkq - 1 5",
        "hash": "10838286404133886495",
        "name": "Sicilian: Lowenthal, 5.Nb5"
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    "B32k": {
        "eco": "B32k",
        "fen": "r1bqkbnr/1p1p1ppp/p1n5/1N2p3/4P3/8/PPP2PPP/RNBQKB1R w KQkq - 0 6",
        "hash": "4944571944586994371",
        "name": "Sicilian: Lowenthal, 5...a6"
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    "B32l": {
        "eco": "B32l",
        "fen": "r1b1k1nr/1p1p1ppp/p1n2Q2/4p3/4P3/8/PPP2PPP/RNB1KB1R b KQkq - 0 8",
        "hash": "16308042795521116835",
        "name": "Sicilian: Lowenthal, 5...a6, Queenswap"
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    "B32m": {
        "eco": "B32m",
        "fen": "r1b1k1nr/1p1p1ppp/p1n2q2/4p3/4P3/8/PPP2PPP/RNBQKB1R b KQkq - 2 8",
        "hash": "12766377868090850138",
        "name": "Sicilian: Lowenthal, 5...a6, 8.Qd1"
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    "B32n": {
        "eco": "B32n",
        "fen": "r1bqkbnr/pp3ppp/2np4/1N2p3/4P3/8/PPP2PPP/RNBQKB1R w KQkq - 0 6",
        "hash": "12669683955602084722",
        "name": "Sicilian: Lowenthal, Kalashnikov"
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    "B32o": {
        "eco": "B32o",
        "fen": "r1bqkbnr/pp3ppp/2np4/1N2p3/P3P3/8/1PP2PPP/RNBQKB1R b KQkq a3 0 6",
        "hash": "14130814048093275836",
        "name": "Sicilian: Lowenthal, Kalashnikov, 6.a4"
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    "B32p": {
        "eco": "B32p",
        "fen": "r1bqkbnr/pp3ppp/2np4/1N2p3/4P3/2N5/PPP2PPP/R1BQKB1R b KQkq - 1 6",
        "hash": "6072218769537782187",
        "name": "Sicilian: Lowenthal, Kalashnikov, 6.N1c3"
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        "eco": "B32q",
        "fen": "r1bqkbnr/5ppp/p1np4/1p2p3/4P3/N1N5/PPP2PPP/R1BQKB1R w KQkq b6 0 8",
        "hash": "17154424962603626407",
        "name": "Sicilian: Lowenthal, Kalashnikov, 6.N1c3 a6 7.Na3 b5"
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    "B32r": {
        "eco": "B32r",
        "fen": "r1bqkb1r/4nppp/p1np4/1p1Np3/4P3/N7/PPP2PPP/R1BQKB1R w KQkq - 2 9",
        "hash": "1173979403644689231",
        "name": "Sicilian: Lowenthal, Kalashnikov, 6.N1c3 a6 7.Na3 b5 8.Nd5 Nge7"
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    "B32s": {
        "eco": "B32s",
        "fen": "r1bqkbnr/pp3ppp/2np4/1N2p3/2P1P3/8/PP3PPP/RNBQKB1R b KQkq c3 0 6",
        "hash": "2589672358233995381",
        "name": "Sicilian: Lowenthal, Kalashnikov, 6.c4"
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    "B32t": {
        "eco": "B32t",
        "fen": "r1bqk1nr/pp2bppp/2np4/1N2p3/2P1P3/8/PP3PPP/RNBQKB1R w KQkq - 1 7",
        "hash": "3980107460374746340",
        "name": "Sicilian: Lowenthal, Kalashnikov, 6.c4 Be7"
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        "eco": "B32u",
        "fen": "r1bqk1nr/pp2bppp/2np4/1N2p3/2P1P3/8/PP2BPPP/RNBQK2R b KQkq - 2 7",
        "hash": "4953024304315997767",
        "name": "Sicilian: Lowenthal, Kalashnikov, 6.c4 Be7 7.Be2"
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    "B32v": {
        "eco": "B32v",
        "fen": "r1bqk1nr/pp2bppp/2np4/1N2p3/2P1P3/2N5/PP3PPP/R1BQKB1R b KQkq - 2 7",
        "hash": "14747940808672302653",
        "name": "Sicilian: Lowenthal, Kalashnikov, 6.c4 Be7 7.N1c3"
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    "B32w": {
        "eco": "B32w",
        "fen": "r2qk1nr/1p2bppp/p1npb3/4p3/2P1P3/N1N5/PP3PPP/R1BQKB1R w KQkq - 2 9",
        "hash": "4774895977539169796",
        "name": "Sicilian: Lowenthal, Kalashnikov, Main Line"
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    "B32x": {
        "eco": "B32x",
        "fen": "r2qk1nr/1p2bppp/p1npb3/4p3/2P1P3/2N5/PPN2PPP/R1BQKB1R b KQkq - 3 9",
        "hash": "16911723330434627797",
        "name": "Sicilian: Lowenthal, Kalashnikov, Main Line, 9.Nc2"
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    "B32y": {
        "eco": "B32y",
        "fen": "r2qk1nr/1p2bppp/p1npb3/4p3/2P1P3/N1N5/PP2BPPP/R1BQK2R b KQkq - 3 9",
        "hash": "3585803662834574503",
        "name": "Sicilian: Lowenthal, Kalashnikov, Main Line, 9.Be2"
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    "B33a": {
        "eco": "B33a",
        "fen": "r1bqkb1r/pp1ppppp/2n2n2/8/3NP3/8/PPP2PPP/RNBQKB1R w KQkq - 1 5",
        "hash": "12868335398863444457",
        "name": "Sicilian: Open, 2...Nc6"
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    "B33b": {
        "eco": "B33b",
        "fen": "r1b1kb1r/pp1ppppp/1qn2n2/8/3NP3/2N5/PPP2PPP/R1BQKB1R w KQkq - 3 6",
        "hash": "10303501648197996010",
        "name": "Sicilian: Open, 2...Nc6, 5...Qb6"
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    "B33c": {
        "eco": "B33c",
        "fen": "r1b1kb1r/pp1p1ppp/1qn1pn2/8/4P3/1NNB4/PPP2PPP/R1BQK2R b KQkq - 1 7",
        "hash": "4176542843831834881",
        "name": "Sicilian: Open, 2...Nc6, 5...Qb6 6.Nb3 e6 7.Bd3"
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    "B33d": {
        "eco": "B33d",
        "fen": "r1bqkb1r/pp1p1ppp/2n2n2/4p3/3NP3/2N5/PPP2PPP/R1BQKB1R w KQkq e6 0 6",
        "hash": "14085731545093530374",
        "name": "Sicilian: Pelikan/Sveshnikov"
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    "B33e": {
        "eco": "B33e",
        "fen": "r1bqkb1r/pp1p1ppp/2n2n2/1N2p3/4P3/2N5/PPP2PPP/R1BQKB1R b KQkq - 1 6",
        "hash": "3895746001243232592",
        "name": "Sicilian: Pelikan/Sveshnikov, 6.Nbd5"
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    "B33f": {
        "eco": "B33f",
        "fen": "r1bqkb1r/pp3ppp/2np1n2/1N2p3/4P3/2N5/PPP2PPP/R1BQKB1R w KQkq - 0 7",
        "hash": "1128976585881817149",
        "name": "Sicilian: Pelikan/Sveshnikov, Pelikan Variation"
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    "B33g": {
        "eco": "B33g",
        "fen": "r1bqkb1r/pp3ppp/2np1n2/1N2p3/P3P3/2N5/1PP2PPP/R1BQKB1R b KQkq a3 0 7",
        "hash": "7233784672141690355",
        "name": "Sicilian: Pelikan, 7.a4"
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    "B33h": {
        "eco": "B33h",
        "fen": "r1bqkb1r/pp3ppp/2np1n2/1N1Np3/4P3/8/PPP2PPP/R1BQKB1R b KQkq - 1 7",
        "hash": "14969754146204905320",
        "name": "Sicilian: Pelikan, 7.Nd5"
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        "eco": "B33i",
        "fen": "r1bqkb1r/pp3ppp/2np1n2/1N2p1B1/4P3/2N5/PPP2PPP/R2QKB1R b KQkq - 1 7",
        "hash": "14551333872688352245",
        "name": "Sicilian: Pelikan, 7.Bg5"
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        "eco": "B33j",
        "fen": "r1bqkb1r/1p3ppp/p1np1B2/1N2p3/4P3/2N5/PPP2PPP/R2QKB1R b KQkq - 0 8",
        "hash": "13706777130208882121",
        "name": "Sicilian: Pelikan, 7.Bg5 a6 8.Bxf6"
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        "eco": "B33k",
        "fen": "r1bqkb1r/1p3ppp/p1np1n2/4p1B1/4P3/N1N5/PPP2PPP/R2QKB1R b KQkq - 1 8",
        "hash": "1414353806124648644",
        "name": "Sicilian: Pelikan, 7.Bg5 a6 8.Na3"
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    "B33l": {
        "eco": "B33l",
        "fen": "r1bqkb1r/5ppp/p1np1n2/1p2p1B1/4P3/N1N5/PPP2PPP/R2QKB1R w KQkq b6 0 9",
        "hash": "8332962638114174457",
        "name": "Sicilian: Pelikan, Chelyabinsk Variation"
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    "B33m": {
        "eco": "B33m",
        "fen": "r1bqk2r/4bppp/p1np1n2/1p1Np1B1/4P3/N7/PPP2PPP/R2QKB1R w KQkq - 2 10",
        "hash": "12068939591307978301",
        "name": "Sicilian: Pelikan, Chelyabinsk, 9.Nd5 Be7"
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    "B33n": {
        "eco": "B33n",
        "fen": "r1bqk2r/5ppp/p1np1b2/1p1Np3/4P3/N1P5/PP3PPP/R2QKB1R b KQkq - 0 11",
        "hash": "6847759117699187927",
        "name": "Sicilian: Pelikan, Chelyabinsk, 9.Nd5 Be7, 11.c3"
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    "B33o": {
        "eco": "B33o",
        "fen": "r1bq1rk1/5ppp/p1np1b2/1p1Np3/4P3/N1P5/PP3PPP/R2QKB1R w KQ - 1 12",
        "hash": "6170156980124970300",
        "name": "Sicilian: Pelikan, Chelyabinsk, 9.Nd5 Be7, 11.c3 O-O"
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    "B33p": {
        "eco": "B33p",
        "fen": "r1bqk2r/5ppp/p1np4/1p1Np1b1/4P3/N1P5/PP3PPP/R2QKB1R w KQkq - 1 12",
        "hash": "8067388175342366683",
        "name": "Sicilian: Pelikan, Chelyabinsk, 9.Nd5 Be7, 11.c3 Bg5"
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    "B33q": {
        "eco": "B33q",
        "fen": "r1bq1rk1/5ppp/p1np4/1p1Np1b1/4P3/2P5/PPN2PPP/R2QKB1R w KQ - 3 13",
        "hash": "14820404269038571745",
        "name": "Sicilian: Pelikan, Chelyabinsk, 9.Nd5 Be7, 11.c3 O-O 12.Nc2 Bg5"
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    "B33r": {
        "eco": "B33r",
        "fen": "r1bq1rk1/5ppp/p1np4/1p1Np1b1/P3P3/2P5/1PN2PPP/R2QKB1R b KQ a3 0 13",
        "hash": "11990229024252740911",
        "name": "Sicilian: Pelikan, Chelyabinsk, 9.Nd5 Be7, 11.c3 O-O 12.Nc2 Bg5 13.a4"
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    "B33s": {
        "eco": "B33s",
        "fen": "r1bqkb1r/5ppp/p1np1B2/1p2p3/4P3/N1N5/PPP2PPP/R2QKB1R b KQkq - 0 9",
        "hash": "15464139078856600345",
        "name": "Sicilian: Pelikan, Chelyabinsk, 9.Bxf6"
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        "fen": "r1bqk2r/5pbp/p1np1p2/1p1Np3/4P3/N2B4/PPP2PPP/R2QK2R b KQkq - 3 11",
        "hash": "2189607523839573116",
        "name": "Sicilian: Pelikan, Chelyabinsk, 9.Bxf6 gxf6 10.Nd5 Bg7 11.Bd3"
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    "B33u": {
        "eco": "B33u",
        "fen": "r1bqkb1r/5p1p/p1np4/1p1Npp2/4P3/N7/PPP2PPP/R2QKB1R w KQkq - 0 11",
        "hash": "6574927938774977037",
        "name": "Sicilian: Pelikan, Sveshnikov Variation"
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        "eco": "B33v",
        "fen": "r1bqkb1r/5p1p/p1np4/1p1Npp2/4P3/N1P5/PP3PPP/R2QKB1R b KQkq - 0 11",
        "hash": "3306819184390391179",
        "name": "Sicilian: Pelikan, Sveshnikov, 11.c3"
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        "fen": "r2q1rk1/5pbp/p1np4/1p1Npb2/8/2P5/PPN2PPP/R2QKB1R w KQ - 2 14",
        "hash": "14600770791043161570",
        "name": "Sicilian: Pelikan, Sveshnikov, 11.c3 Bg7 12.exf5 Bxf5 13.Nc2 O-O"
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        "fen": "r1bqkb1r/5p1p/p1np4/1p1Npp2/4P3/N2B4/PPP2PPP/R2QK2R b KQkq - 1 11",
        "hash": "1023293197464995966",
        "name": "Sicilian: Pelikan, Sveshnikov, 11.Bd3"
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        "hash": "2665742155942668390",
        "name": "Sicilian: Pelikan, Sveshnikov, 11.Bd3 Be6 12.O-O"
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        "eco": "B34a",
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        "hash": "58517604370926132",
        "name": "Sicilian: Accelerated Fianchetto"
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        "eco": "B34b",
        "fen": "r1bqkbnr/pp1ppp1p/2n3p1/8/2BNP3/8/PPP2PPP/RNBQK2R b KQkq - 1 5",
        "hash": "7168694159591677074",
        "name": "Sicilian: Accelerated Fianchetto, 5.Bc4"
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        "eco": "B34c",
        "fen": "r1bqkbnr/pp1ppp1p/2N3p1/8/4P3/8/PPP2PPP/RNBQKB1R b KQkq - 0 5",
        "hash": "5498148765782426369",
        "name": "Sicilian: Accelerated Fianchetto, Exchange Variation"
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        "eco": "B34d",
        "fen": "r1bqkbnr/pp1ppp1p/2n3p1/8/3NP3/8/PPP1BPPP/RNBQK2R b KQkq - 1 5",
        "hash": "8308972582502629527",
        "name": "Sicilian: Accelerated Fianchetto, 5.Be2"
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        "eco": "B34e",
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        "hash": "8342740875957817786",
        "name": "Sicilian: Accelerated Fianchetto, 5.Be3"
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    "B34f": {
        "eco": "B34f",
        "fen": "r1bqkbnr/pp1ppp1p/2n3p1/8/3NP3/2N5/PPP2PPP/R1BQKB1R b KQkq - 1 5",
        "hash": "18111504978769103085",
        "name": "Sicilian: Accelerated Fianchetto, Modern Variation"
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    "B34g": {
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        "hash": "11580664648599996795",
        "name": "Sicilian: Accelerated Fianchetto, Modern, 5...Nf6"
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    "B34h": {
        "eco": "B34h",
        "fen": "r1bqkb1r/pp1ppp1p/2N2np1/8/4P3/2N5/PPP2PPP/R1BQKB1R b KQkq - 0 6",
        "hash": "17020358064587276366",
        "name": "Sicilian: Accelerated Fianchetto, Modern, 5...Nf6 6.Nxc6"
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        "eco": "B34i",
        "fen": "r1bqkb1r/p2ppp1p/2p2np1/8/4P3/2N5/PPP2PPP/R1BQKB1R w KQkq - 0 7",
        "hash": "3576611462334204869",
        "name": "Sicilian: Accelerated Fianchetto, Modern, 5...Nf6 6.Nxc6 bxc6"
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        "eco": "B34j",
        "fen": "r1bqk1nr/pp1pppbp/2n3p1/8/3NP3/2N5/PPP2PPP/R1BQKB1R w KQkq - 2 6",
        "hash": "5468707397290132295",
        "name": "Sicilian: Accelerated Fianchetto, Modern, 5...Bg7"
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    "B34k": {
        "eco": "B34k",
        "fen": "r1bqk1nr/pp1pppbp/2n3p1/8/4P3/2N5/PPP1NPPP/R1BQKB1R b KQkq - 3 6",
        "hash": "18033359943013390155",
        "name": "Sicilian: Accelerated Fianchetto, Modern, 6.Nde2"
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    "B34l": {
        "eco": "B34l",
        "fen": "r1bqk1nr/pp1pppbp/2n3p1/8/4P3/1NN5/PPP2PPP/R1BQKB1R b KQkq - 3 6",
        "hash": "16111056240126215565",
        "name": "Sicilian: Accelerated Fianchetto, Modern, 6.Nb3"
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    "B34m": {
        "eco": "B34m",
        "fen": "r1bqk1nr/pp1pppbp/2n3p1/8/3NP3/2N1B3/PPP2PPP/R2QKB1R b KQkq - 3 6",
        "hash": "4101789200867498185",
        "name": "Sicilian: Accelerated Fianchetto, Modern, 6.Be3"
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        "eco": "B34n",
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        "hash": "18061563859482967963",
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        "hash": "10670846742649966826",
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        "hash": "8563463582033101019",
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        "hash": "10154625774945919283",
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        "hash": "13066891089507854430",
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        "hash": "15493032128271556773",
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        "hash": "3212568468569563772",
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        "hash": "9364905048674704191",
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        "hash": "5173852007167802458",
        "name": "Sicilian: Maroczy Bind, Gurgenidze Variation"
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        "hash": "1526650323757558545",
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        "hash": "7399207035103388082",
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        "hash": "14685330321106901233",
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        "hash": "18051820969587959363",
        "name": "Sicilian: Maroczy Bind, 5...Nf6 6.Nc3 d6 7.Be2 Nxd4 8.Qxd4 Bg7 9.O-O"
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        "eco": "B36k",
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        "hash": "4804179192885667483",
        "name": "Sicilian: Maroczy Bind, 5...Nf6 6.Nc3 d6 7.Be2 Nxd4 8.Qxd4 Bg7 9.Bg5"
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        "hash": "5189046387603148656",
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        "hash": "18197229163754721285",
        "name": "Sicilian: Maroczy Bind, 5...Nf6 6.Nc3 d6 7.Be2 Nxd4 8.Qxd4 Bg7 9.Bg5 O-O 10.Qd2"
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        "hash": "17868369481914722013",
        "name": "Sicilian: Maroczy Bind, 5...Nf6 6.Nc3 d6 7.Be2 Nxd4 8.Qxd4 Bg7 9.Be3"
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        "hash": "5321961015951904835",
        "name": "Sicilian: Maroczy Bind, 5...Nf6 6.Nc3 d6 7.Be2 Nxd4 8.Qxd4 Bg7 9.Be3 O-O 10.Qd2"
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        "hash": "2117806233871133515",
        "name": "Sicilian: Maroczy Bind, 5...Nf6 6.Nc3 d6 7.Be2 Nxd4 8.Qxd4 Bg7 9.Be3 O-O 10.Qd2 Be6"
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        "hash": "7140051184127897691",
        "name": "Sicilian: Maroczy Bind, 5...Nf6 6.Nc3 d6 7.Be2 Nxd4 8.Qxd4 Bg7 9.Be3 O-O 10.Qd2 Be6 11.O-O"
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        "hash": "4346052675426232985",
        "name": "Sicilian: Maroczy Bind, 5...Bg7"
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        "eco": "B37b",
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        "hash": "12115104990326778963",
        "name": "Sicilian: Maroczy Bind, 6.Nb3"
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        "eco": "B37c",
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        "hash": "7596581259446631923",
        "name": "Sicilian: Maroczy Bind, 6.Nc2"
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        "hash": "5825102695321367710",
        "name": "Sicilian: Maroczy Bind, 6.Nc2 d6"
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        "eco": "B37e",
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        "hash": "2546345719798283837",
        "name": "Sicilian: Maroczy Bind, 6.Nc2 d6 7.Be2"
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        "eco": "B37f",
        "fen": "r1bqk2r/pp2ppbp/2np2pn/8/2P1P3/8/PPN1BPPP/RNBQK2R w KQkq - 2 8",
        "hash": "11734955749324608324",
        "name": "Sicilian: Maroczy Bind, Simagin Variation"
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        "eco": "B37g",
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        "hash": "3639557887657704549",
        "name": "Sicilian: Maroczy Bind, 6.Nc2 Nf6"
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        "eco": "B37h",
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        "hash": "14104635803182667607",
        "name": "Sicilian: Maroczy Bind, 6.Nc2 Nf6 7.Nc3 O-O"
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    "B37i": {
        "eco": "B37i",
        "fen": "r1bqk2r/pp2ppbp/2np1np1/8/2P1P3/2N5/PPN2PPP/R1BQKB1R w KQkq - 0 8",
        "hash": "17343292202298914769",
        "name": "Sicilian: Maroczy Bind, 6.Nc2 Nf6 7.Nc3 d6"
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        "eco": "B37j",
        "fen": "r1bqk2r/pp1nppbp/2np2p1/8/2P1P3/2N5/PPN1BPPP/R1BQK2R w KQkq - 2 9",
        "hash": "8820370243869045895",
        "name": "Sicilian: Maroczy Bind, 6.Nc2 Nf6 7.Nc3 d6 8.Be2 Nd7"
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    "B37k": {
        "eco": "B37k",
        "fen": "r1bq1rk1/pp2ppbp/2np1np1/8/2P1P3/2N5/PPN1BPPP/R1BQK2R w KQ - 2 9",
        "hash": "9910080890366104729",
        "name": "Sicilian: Maroczy Bind, 6.Nc2 Nf6 7.Nc3 d6 8.Be2 O-O"
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    "B37l": {
        "eco": "B37l",
        "fen": "r1bq1rk1/pp2ppbp/2np1np1/8/2P1P3/2N5/PPN1BPPP/R1BQ1RK1 b - - 3 9",
        "hash": "17866577022887350153",
        "name": "Sicilian: Maroczy Bind, 6.Nc2 Nf6 7.Nc3 d6 8.Be2 O-O 9.O-O"
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    "B37m": {
        "eco": "B37m",
        "fen": "r2q1rk1/pp2ppbp/2npbnp1/8/2P1P3/2N5/PPN1BPPP/R1BQ1RK1 w - - 4 10",
        "hash": "11766296074353783937",
        "name": "Sicilian: Maroczy Bind, 6.Nc2 Nf6 7.Nc3 d6 8.Be2 O-O 9.O-O Be6"
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    "B37n": {
        "eco": "B37n",
        "fen": "r1bq1rk1/pp1nppbp/2np2p1/8/2P1P3/2N5/PPN1BPPP/R1BQ1RK1 w - - 4 10",
        "hash": "1059989143508436604",
        "name": "Sicilian: Maroczy Bind, 6.Nc2 Nf6 7.Nc3 d6 8.Be2 O-O 9.O-O Nd7"
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    "B37o": {
        "eco": "B37o",
        "fen": "r1bq1rk1/pp1nppbp/2np2p1/8/2P1P3/2N5/PPNBBPPP/R2Q1RK1 b - - 5 10",
        "hash": "2826162934545526136",
        "name": "Sicilian: Maroczy Bind, 6.Nc2 Nf6 7.Nc3 d6 8.Be2 O-O 9.O-O Nd7 10.Bd2"
    },
    "B37p": {
        "eco": "B37p",
        "fen": "r1bq1rk1/pp2ppbp/2np2p1/2n5/2P1P3/2N5/PPNBBPPP/R2Q1RK1 w - - 6 11",
        "hash": "540033940557031474",
        "name": "Sicilian: Maroczy Bind, 6.Nc2 Nf6 7.Nc3 d6 8.Be2 O-O 9.O-O Nd7 10.Bd2 Nc5"
    },
    "B37q": {
        "eco": "B37q",
        "fen": "r1bq1rk1/pp2ppbp/2np2p1/2n5/1PP1P3/2N5/P1NBBPPP/R2Q1RK1 b - b3 0 11",
        "hash": "12505339124090668054",
        "name": "Sicilian: Maroczy Bind, 6.Nc2 Nf6 7.Nc3 d6 8.Be2 O-O 9.O-O Nd7 10.Bd2 Nc5 11.b4"
    },
    "B38a": {
        "eco": "B38a",
        "fen": "r1bqk1nr/pp1pppbp/2n3p1/8/2PNP3/4B3/PP3PPP/RN1QKB1R b KQkq - 2 6",
        "hash": "5717596860866146583",
        "name": "Sicilian: Maroczy Bind, 6.Be3"
    },
    "B38b": {
        "eco": "B38b",
        "fen": "r1bqk2r/pp1pppbp/2n3pn/8/2PNP3/4B3/PP3PPP/RN1QKB1R w KQkq - 3 7",
        "hash": "14903646923521186926",
        "name": "Sicilian: Maroczy Bind, 6.Be3 Nh6"
    },
    "B38c": {
        "eco": "B38c",
        "fen": "r1bqk1nr/pp2ppbp/2np2p1/8/2PNP3/4B3/PP3PPP/RN1QKB1R w KQkq - 0 7",
        "hash": "8566526455828772986",
        "name": "Sicilian: Maroczy Bind, 6.Be3 d6"
    },
    "B38d": {
        "eco": "B38d",
        "fen": "r1bqk2r/pp1pppbp/2n2np1/8/2PNP3/4B3/PP3PPP/RN1QKB1R w KQkq - 3 7",
        "hash": "1492601297909248129",
        "name": "Sicilian: Maroczy Bind, 6.Be3 Nf6"
    },
    "B38e": {
        "eco": "B38e",
        "fen": "r1bqk2r/pp2ppbp/2np1np1/8/2PNP3/2N1B3/PP3PPP/R2QKB1R w KQkq - 0 8",
        "hash": "15464030968912821045",
        "name": "Sicilian: Maroczy Bind, 6.Be3 Nf6 7.Nc3 d6"
    },
    "B38f": {
        "eco": "B38f",
        "fen": "r1bqk2r/pp2ppbp/2np1np1/8/2PNP3/2N1B3/PP2BPPP/R2QK2R b KQkq - 1 8",
        "hash": "11897320281814167958",
        "name": "Sicilian: Maroczy Bind, 6.Be3 Nf6 7.Nc3 d6 8.Be2"
    },
    "B38g": {
        "eco": "B38g",
        "fen": "r1bq1rk1/pp1pppbp/2n2np1/8/2PNP3/2N1B3/PP3PPP/R2QKB1R w KQ - 5 8",
        "hash": "16539819198882356147",
        "name": "Sicilian: Maroczy Bind, 7.Nc3 O-O"
    },
    "B38h": {
        "eco": "B38h",
        "fen": "r1bq1rk1/p2pppbp/1pn2np1/8/2PNP3/2N1B3/PP2BPPP/R2QK2R w KQ - 0 9",
        "hash": "18257864485932328587",
        "name": "Sicilian: Maroczy Bind, 7.Nc3 O-O 8.Be2 b6"
    },
    "B38i": {
        "eco": "B38i",
        "fen": "r1bq1rk1/p2pppbp/1pn2np1/8/2PNP3/2N1B3/PP2BPPP/R2Q1RK1 b - - 1 9",
        "hash": "9445609933375847835",
        "name": "Sicilian: Maroczy Bind, 7.Nc3 O-O 8.Be2 b6 9.O-O"
    },
    "B38j": {
        "eco": "B38j",
        "fen": "r2q1rk1/pb1pppbp/1pn2np1/8/2PNP3/2N1BP2/PP2B1PP/R2Q1RK1 b - - 0 10",
        "hash": "6716030901884353905",
        "name": "Sicilian: Maroczy Bind, 7.Nc3 O-O 8.Be2 b6 9.O-O Bb7 10.f3"
    },
    "B38k": {
        "eco": "B38k",
        "fen": "rq3rk1/pb1pppbp/1pn2np1/8/2PNP3/2N1BP2/PP2B1PP/R2Q1RK1 w - - 1 11",
        "hash": "5259456507768782294",
        "name": "Sicilian: Maroczy Bind, 7.Nc3 O-O 8.Be2 b6 9.O-O Bb7 10.f3 Qb8"
    },
    "B38l": {
        "eco": "B38l",
        "fen": "r1bq1rk1/pp2ppbp/2np1np1/8/2PNP3/2N1B3/PP2BPPP/R2QK2R w KQ - 0 9",
        "hash": "12660507461213263997",
        "name": "Sicilian: Maroczy Bind, 7.Nc3 O-O 8.Be2 d6"
    },
    "B38m": {
        "eco": "B38m",
        "fen": "r1bq1rk1/pp2ppbp/2np1np1/8/2PNP3/2N1BP2/PP2B1PP/R2QK2R b KQ - 0 9",
        "hash": "13907905393092622092",
        "name": "Sicilian: Maroczy Bind, 7.Nc3 O-O 8.Be2 d6 9.f3"
    },
    "B38n": {
        "eco": "B38n",
        "fen": "r1bq1rk1/pp2ppbp/2np1np1/8/2PNP3/2N1B3/PP2BPPP/R2Q1RK1 b - - 1 9",
        "hash": "15115860739316728685",
        "name": "Sicilian: Maroczy Bind, 7.Nc3 O-O 8.Be2 d6 9.O-O"
    },
    "B38o": {
        "eco": "B38o",
        "fen": "r1bq1rk1/pp1nppbp/2np2p1/8/2PNP3/2N1B3/PP2BPPP/R2Q1RK1 w - - 2 10",
        "hash": "2918702990824262296",
        "name": "Sicilian: Maroczy Bind, 7.Nc3 O-O 8.Be2 d6 9.O-O Nd7"
    },
    "B38p": {
        "eco": "B38p",
        "fen": "r1bq1rk1/1p2ppbp/p1np1np1/8/2PNP3/2N1B3/PP2BPPP/R2Q1RK1 w - - 0 10",
        "hash": "230143944416017329",
        "name": "Sicilian: Maroczy Bind, 7.Nc3 O-O 8.Be2 d6 9.O-O a6"
    },
    "B38q": {
        "eco": "B38q",
        "fen": "r1bq1rk1/pp2ppbp/3p1np1/8/2PnP3/2N1B3/PP2BPPP/R2Q1RK1 w - - 0 10",
        "hash": "8981821183071517230",
        "name": "Sicilian: Maroczy Bind, 7.Nc3 O-O 8.Be2 d6 9.O-O Nxd4"
    },
    "B38r": {
        "eco": "B38r",
        "fen": "r2q1rk1/pp1bppbp/2np1np1/8/2PNP3/2N1B3/PP2BPPP/R2Q1RK1 w - - 2 10",
        "hash": "3677097920225973084",
        "name": "Sicilian: Maroczy Bind, 7.Nc3 O-O 8.Be2 d6 9.O-O Bd7"
    },
    "B38s": {
        "eco": "B38s",
        "fen": "r2q1rk1/pp1bppbp/2np1np1/8/2P1P3/2N1B3/PPN1BPPP/R2Q1RK1 b - - 3 10",
        "hash": "7366640608644662326",
        "name": "Sicilian: Maroczy Bind, 7.Nc3 O-O 8.Be2 d6 9.O-O Bd7 10.Nc2"
    },
    "B38t": {
        "eco": "B38t",
        "fen": "r2q1rk1/pp1bppbp/2np1np1/8/2PNP3/2N1BP2/PP2B1PP/R2Q1RK1 b - - 0 10",
        "hash": "6752667301422529581",
        "name": "Sicilian: Maroczy Bind, 7.Nc3 O-O 8.Be2 d6 9.O-O Bd7 10.f3"
    },
    "B38u": {
        "eco": "B38u",
        "fen": "r2q1rk1/pp1bppbp/2np1np1/8/2PNP3/2N1B3/PP2BPPP/2RQ1RK1 b - - 3 10",
        "hash": "13689209873000973842",
        "name": "Sicilian: Maroczy Bind, 7.Nc3 O-O 8.Be2 d6 9.O-O Bd7 10.Rc1"
    },
    "B38v": {
        "eco": "B38v",
        "fen": "r2q1rk1/pp1bppbp/2np1np1/8/2PNP3/2N1B3/PP1QBPPP/R4RK1 b - - 3 10",
        "hash": "1954529924200811772",
        "name": "Sicilian: Maroczy Bind, 7.Nc3 O-O 8.Be2 d6 9.O-O Bd7 10.Qd2"
    },
    "B38w": {
        "eco": "B38w",
        "fen": "r2q1rk1/pp1bppbp/3p1np1/8/2PnP3/2N1B3/PP1QBPPP/R4RK1 w - - 0 11",
        "hash": "13149498374034912703",
        "name": "Sicilian: Maroczy Bind, 7.Nc3 O-O 8.Be2 d6 9.O-O Bd7 10.Qd2 Nxd4"
    },
    "B38x": {
        "eco": "B38x",
        "fen": "r2q1rk1/pp2ppbp/2bp1np1/8/2PBP3/2N2P2/PP1QB1PP/R4RK1 b - - 0 12",
        "hash": "2383386564151135666",
        "name": "Sicilian: Maroczy Bind, 7.Nc3 O-O 8.Be2 d6 9.O-O Bd7 10.Qd2 Nxd4, 12.f3"
    },
    "B38y": {
        "eco": "B38y",
        "fen": "r2q1rk1/1p2ppbp/2bp1np1/p7/2PBP3/2N2P2/PP1QB1PP/R4RK1 w - a6 0 13",
        "hash": "12036372148860141858",
        "name": "Sicilian: Maroczy Bind, 7.Nc3 O-O 8.Be2 d6 9.O-O Bd7 10.Qd2 Nxd4, 12.f3 a5"
    },
    "B38z": {
        "eco": "B38z",
        "fen": "r2q1rk1/1p2ppbp/2bp1np1/p7/2PBP3/1PN2P2/P2QB1PP/R4RK1 b - - 0 13",
        "hash": "3147920372359998031",
        "name": "Sicilian: Maroczy Bind, 7.Nc3 O-O 8.Be2 d6 9.O-O Bd7 10.Qd2 Nxd4, 12.f3 a5 13.b3"
    },
    "B39a": {
        "eco": "B39a",
        "fen": "r1bqk2r/pp1pppbp/2n3p1/8/2PNP1n1/2N1B3/PP3PPP/R2QKB1R w KQkq - 5 8",
        "hash": "8215281760737616692",
        "name": "Sicilian: Maroczy Bind, Breyer Variation"
    },
    "B39b": {
        "eco": "B39b",
        "fen": "r1bqk2r/pp1pppbp/2n3p1/8/2PNP1Q1/2N1B3/PP3PPP/R3KB1R b KQkq - 0 8",
        "hash": "8051568792063444755",
        "name": "Sicilian: Maroczy Bind, Breyer, 8.Qxg4"
    },
    "B39c": {
        "eco": "B39c",
        "fen": "r1bqk2r/pp1pppbp/6p1/8/2PnP1Q1/2N1B3/PP3PPP/R3KB1R w KQkq - 0 9",
        "hash": "14042063857499848272",
        "name": "Sicilian: Maroczy Bind, Breyer, 8.Qxg4 Nxd4"
    },
    "B39d": {
        "eco": "B39d",
        "fen": "r1bqk2r/pp1pppbp/6p1/8/2PnP3/2N1B3/PP3PPP/R2QKB1R b KQkq - 1 9",
        "hash": "10909156462949721181",
        "name": "Sicilian: Maroczy Bind, Breyer, 8.Qxg4 Nxd4 9.Qd1"
    },
    "B39e": {
        "eco": "B39e",
        "fen": "r1bqk2r/pp1p1pbp/6p1/4p3/2PnP3/2N1B3/PP3PPP/R2QKB1R w KQkq e6 0 10",
        "hash": "2097855311340870763",
        "name": "Sicilian: Maroczy Bind, Breyer, 8.Qxg4 Nxd4 9.Qd1 e5"
    },
    "B39f": {
        "eco": "B39f",
        "fen": "r1bqk2r/pp1p1pbp/6p1/1N2p3/2PnP3/4B3/PP3PPP/R2QKB1R b KQkq - 1 10",
        "hash": "16846663337181252241",
        "name": "Sicilian: Maroczy Bind, Breyer, 8.Qxg4 Nxd4 9.Qd1 e5 10.Nb5"
    },
    "B39g": {
        "eco": "B39g",
        "fen": "r1bqk2r/pp1p1pbp/6p1/4p3/2PnP3/2NBB3/PP3PPP/R2QK2R b KQkq - 1 10",
        "hash": "5192850379857157656",
        "name": "Sicilian: Maroczy Bind, Breyer, 8.Qxg4 Nxd4 9.Qd1 e5 10.Bd3"
    },
    "B39h": {
        "eco": "B39h",
        "fen": "r1bqk2r/pp1pppbp/4n1p1/8/2P1P3/2N1B3/PP3PPP/R2QKB1R w KQkq - 2 10",
        "hash": "15408677686580240544",
        "name": "Sicilian: Maroczy Bind, Breyer, 8.Qxg4 Nxd4 9.Qd1 Ne6"
    },
    "B39i": {
        "eco": "B39i",
        "fen": "r1bqk2r/pp1pppbp/4n1p1/8/2P1P3/2N1B3/PP1Q1PPP/R3KB1R b KQkq - 3 10",
        "hash": "18288785176834326272",
        "name": "Sicilian: Maroczy Bind, Breyer, 8.Qxg4 Nxd4 9.Qd1 Ne6 10.Qd2"
    },
    "B39j": {
        "eco": "B39j",
        "fen": "r1bqk2r/pp1pppbp/4n1p1/8/2P1P3/2N1B3/PP3PPP/2RQKB1R b Kkq - 3 10",
        "hash": "12271554694308443262",
        "name": "Sicilian: Maroczy Bind, Breyer, 8.Qxg4 Nxd4 9.Qd1 Ne6 10.Rc1"
    },
    "B39k": {
        "eco": "B39k",
        "fen": "r1b1k2r/pp1pppbp/4n1p1/q7/2P1P3/2N1B3/PP3PPP/2RQKB1R w Kkq - 4 11",
        "hash": "8304290961731229169",
        "name": "Sicilian: Maroczy Bind, Breyer, 8.Qxg4 Nxd4 9.Qd1 Ne6 10.Rc1 Qa5"
    },
    "B39l": {
        "eco": "B39l",
        "fen": "r1b1k2r/pp1pppbp/4n1p1/q7/2P1P3/2N1B3/PP1Q1PPP/2R1KB1R b Kkq - 5 11",
        "hash": "6568090138210191953",
        "name": "Sicilian: Maroczy Bind, Breyer, 8.Qxg4 Nxd4 9.Qd1 Ne6 10.Rc1 Qa5 11.Qd2"
    },
    "B40a": {
        "eco": "B40a",
        "fen": "rnbqkbnr/pp1p1ppp/4p3/2p5/4P3/5N2/PPPP1PPP/RNBQKB1R w KQkq - 0 3",
        "hash": "14510127655146404740",
        "name": "Sicilian: 2...e6"
    },
    "B40b": {
        "eco": "B40b",
        "fen": "rnbqkbnr/pp1p1ppp/4p3/2p5/2P1P3/5N2/PP1P1PPP/RNBQKB1R b KQkq c3 0 3",
        "hash": "5007381686952726659",
        "name": "Sicilian: 2...e6 3.c4"
    },
    "B40c": {
        "eco": "B40c",
        "fen": "rnbqkbnr/pp1p1ppp/4p3/2p5/4P3/1P3N2/P1PP1PPP/RNBQKB1R b KQkq - 0 3",
        "hash": "5041837428418007273",
        "name": "Sicilian: 2...e6 3.b3"
    },
    "B40d": {
        "eco": "B40d",
        "fen": "r1bqkbnr/pp1p1ppp/2n1p3/2p5/4P3/1P3N2/P1PP1PPP/RNBQKB1R w KQkq - 1 4",
        "hash": "17155878457575372266",
        "name": "Sicilian: 2...e6 3.b3 Nc6"
    },
    "B40e": {
        "eco": "B40e",
        "fen": "rnbqkbnr/pp1p1ppp/4p3/2p5/4P3/5NP1/PPPP1P1P/RNBQKB1R b KQkq - 0 3",
        "hash": "16553243731529393084",
        "name": "Sicilian: 2...e6 3.g3"
    },
    "B40f": {
        "eco": "B40f",
        "fen": "rnbqkbnr/pp1p1ppp/4p3/2p5/4P3/3P1N2/PPP2PPP/RNBQKB1R b KQkq - 0 3",
        "hash": "7492467970858418256",
        "name": "Sicilian: 2...e6 3.d3"
    },
    "B40g": {
        "eco": "B40g",
        "fen": "rnbqkbnr/pp1p1ppp/4p3/2p5/4P3/2N2N2/PPPP1PPP/R1BQKB1R b KQkq - 1 3",
        "hash": "3659540403779025245",
        "name": "Sicilian: 2...e6 3.Nc3"
    },
    "B40h": {
        "eco": "B40h",
        "fen": "r1bqkbnr/pp1p1ppp/2n1p3/2p5/4P3/2N2N2/PPPP1PPP/R1BQKB1R w KQkq - 2 4",
        "hash": "11035108237092428894",
        "name": "Sicilian: 2...e6 3.Nc3 Nc6"
    },
    "B40i": {
        "eco": "B40i",
        "fen": "rnbqkbnr/pp1p1ppp/4p3/2p5/3PP3/5N2/PPP2PPP/RNBQKB1R b KQkq d3 0 3",
        "hash": "894944823920531142",
        "name": "Sicilian: 2...e6 3.d4"
    },
    "B40j": {
        "eco": "B40j",
        "fen": "rnbqkbnr/pp3ppp/4p3/2pp4/3PP3/5N2/PPP2PPP/RNBQKB1R w KQkq d6 0 4",
        "hash": "9872270298815912160",
        "name": "Sicilian: Marshall Variation"
    },
    "B40k": {
        "eco": "B40k",
        "fen": "rnbqkbnr/pp1p1ppp/4p3/8/3pP3/5N2/PPP2PPP/RNBQKB1R w KQkq - 0 4",
        "hash": "6013925796646747904",
        "name": "Sicilian: Open, 2...e6"
    },
    "B40l": {
        "eco": "B40l",
        "fen": "rnbqkbnr/pp1p1ppp/4p3/8/3NP3/8/PPP2PPP/RNBQKB1R b KQkq - 0 4",
        "hash": "3810499361844915502",
        "name": "Sicilian: Open, 2...e6, 4.Nxd4"
    },
    "B40m": {
        "eco": "B40m",
        "fen": "rnbqk1nr/pp1p1ppp/4p3/2b5/3NP3/8/PPP2PPP/RNBQKB1R w KQkq - 1 5",
        "hash": "11095981766956844973",
        "name": "Sicilian: Open, 2...e6, 4.Nxd4 Bc5"
    },
    "B40n": {
        "eco": "B40n",
        "fen": "rnb1kbnr/pp1p1ppp/1q2p3/8/3NP3/8/PPP2PPP/RNBQKB1R w KQkq - 1 5",
        "hash": "17518548094710823924",
        "name": "Sicilian: Kveinys Variation"
    },
    "B40o": {
        "eco": "B40o",
        "fen": "rnbqkb1r/pp1p1ppp/4pn2/8/3NP3/8/PPP2PPP/RNBQKB1R w KQkq - 1 5",
        "hash": "8002799843668143288",
        "name": "Sicilian: Open, 2...e6, 4.Nxd4 Nf6"
    },
    "B40p": {
        "eco": "B40p",
        "fen": "rnbqkb1r/pp1p1ppp/4pn2/8/3NP3/3B4/PPP2PPP/RNBQK2R b KQkq - 2 5",
        "hash": "4179914041107738315",
        "name": "Sicilian: Open, 2...e6, 4.Nxd4 Nf6 5.Bd3"
    },
    "B40q": {
        "eco": "B40q",
        "fen": "r1bqkb1r/pp1p1ppp/2N1pn2/8/4P3/3B4/PPP2PPP/RNBQK2R b KQkq - 0 6",
        "hash": "15955528978876416765",
        "name": "Sicilian: Open, 2...e6, 4.Nxd4 Nf6 5.Bd3 Nc6 6.Nxc6"
    },
    "B40r": {
        "eco": "B40r",
        "fen": "rnbqkb1r/pp1p1ppp/4pn2/8/3NP3/2N5/PPP2PPP/R1BQKB1R b KQkq - 2 5",
        "hash": "10707502368473656929",
        "name": "Sicilian: Open, 2...e6, 4.Nxd4 Nf6 5.Nc3"
    },
    "B40s": {
        "eco": "B40s",
        "fen": "rnbqk2r/pp1p1ppp/4pn2/8/1b1NP3/2N5/PPP2PPP/R1BQKB1R w KQkq - 3 6",
        "hash": "6762675640370030147",
        "name": "Sicilian: Pin Variation"
    },
    "B40t": {
        "eco": "B40t",
        "fen": "rnbqk2r/pp1p1ppp/5n2/4p3/1b1NP3/2NB4/PPP2PPP/R1BQK2R w KQkq - 0 7",
        "hash": "868531555974334813",
        "name": "Sicilian: Pin, Jaffe Variation"
    },
    "B40u": {
        "eco": "B40u",
        "fen": "rnbqk2r/pp1p1ppp/4pn2/4P3/1b1N4/2N5/PPP2PPP/R1BQKB1R b KQkq - 0 6",
        "hash": "4368719611914305575",
        "name": "Sicilian: Pin, Koch Variation"
    },
    "B41a": {
        "eco": "B41a",
        "fen": "rnbqkbnr/1p1p1ppp/p3p3/8/3NP3/8/PPP2PPP/RNBQKB1R w KQkq - 0 5",
        "hash": "16579558963243030002",
        "name": "Sicilian: Kan (Paulsen)"
    },
    "B41b": {
        "eco": "B41b",
        "fen": "rnbqkbnr/1p1p1ppp/p3p3/8/3NP3/6P1/PPP2P1P/RNBQKB1R b KQkq - 0 5",
        "hash": "14623423599234076106",
        "name": "Sicilian: Kan, 5.g3"
    },
    "B41c": {
        "eco": "B41c",
        "fen": "rnbqkbnr/1p1p1ppp/p3p3/8/3NP3/4B3/PPP2PPP/RN1QKB1R b KQkq - 1 5",
        "hash": "10745262037463764604",
        "name": "Sicilian: Kan, 5.Be3"
    },
    "B41d": {
        "eco": "B41d",
        "fen": "rnbqkbnr/1p1p1ppp/p3p3/8/3NP3/8/PPP1BPPP/RNBQK2R b KQkq - 1 5",
        "hash": "10779065480931696465",
        "name": "Sicilian: Kan, 5.Be2"
    },
    "B41e": {
        "eco": "B41e",
        "fen": "rnbqkb1r/1p1p1ppp/p3pn2/8/3NP3/8/PPP1BPPP/RNBQK2R w KQkq - 2 6",
        "hash": "14877881080880406215",
        "name": "Sicilian: Kan, 5.Be2 Nf6"
    },
    "B41f": {
        "eco": "B41f",
        "fen": "rnbqkbnr/1p1p1ppp/p3p3/8/2PNP3/8/PP3PPP/RNBQKB1R b KQkq c3 0 5",
        "hash": "7653289415459028725",
        "name": "Sicilian: Kan, 5.c4"
    },
    "B41g": {
        "eco": "B41g",
        "fen": "rnb1kbnr/1pqp1ppp/p3p3/8/2PNP3/8/PP3PPP/RNBQKB1R w KQkq - 1 6",
        "hash": "7794267564191412724",
        "name": "Sicilian: Kan, 5.c4 Qc7"
    },
    "B41h": {
        "eco": "B41h",
        "fen": "rnbqkb1r/1p1p1ppp/p3pn2/8/2PNP3/8/PP3PPP/RNBQKB1R w KQkq - 1 6",
        "hash": "3592683763173916515",
        "name": "Sicilian: Kan, 5.c4 Nf6"
    },
    "B41i": {
        "eco": "B41i",
        "fen": "rnbqkb1r/1p1p1ppp/p3pn2/8/2PNP3/2N5/PP3PPP/R1BQKB1R b KQkq - 2 6",
        "hash": "14577270717053271482",
        "name": "Sicilian: Kan, 5.c4 Nf6 6.Nc3"
    },
    "B41j": {
        "eco": "B41j",
        "fen": "rnbqkb1r/1p3ppp/p2ppn2/8/2PNP3/2N5/PP3PPP/R1BQKB1R w KQkq - 0 7",
        "hash": "17579317472376501463",
        "name": "Sicilian: Kan, 5.c4 Nf6 6.Nc3 d6"
    },
    "B41k": {
        "eco": "B41k",
        "fen": "rnbqk2r/1p1p1ppp/p3pn2/8/1bPNP3/2N5/PP3PPP/R1BQKB1R w KQkq - 3 7",
        "hash": "220033706715133336",
        "name": "Sicilian: Kan, 5.c4 Nf6 6.Nc3 Bb4"
    },
    "B41l": {
        "eco": "B41l",
        "fen": "rnb1kb1r/1pqp1ppp/p3pn2/8/2PNP3/2N5/PP3PPP/R1BQKB1R w KQkq - 3 7",
        "hash": "14723359386301018811",
        "name": "Sicilian: Kan, 5.c4 Nf6 6.Nc3 Qc7"
    },
    "B41m": {
        "eco": "B41m",
        "fen": "rnb1kb1r/1pqp1ppp/p3pn2/8/2PNP3/2N5/PP2BPPP/R1BQK2R b KQkq - 4 7",
        "hash": "13822500136397830168",
        "name": "Sicilian: Kan, 5.c4 Nf6 6.Nc3 Qc7 7.Be2"
    },
    "B42a": {
        "eco": "B42a",
        "fen": "rnbqkbnr/1p1p1ppp/p3p3/8/3NP3/3B4/PPP2PPP/RNBQK2R b KQkq - 1 5",
        "hash": "12906134191187318657",
        "name": "Sicilian: Kan, 5.Bd3"
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    "B42b": {
        "eco": "B42b",
        "fen": "rnbqkbnr/1p1p1p1p/p3p1p1/8/3NP3/3B4/PPP2PPP/RNBQK2R w KQkq - 0 6",
        "hash": "6534617444637590986",
        "name": "Sicilian: Kan, Swiss Cheese Variation"
    },
    "B42c": {
        "eco": "B42c",
        "fen": "rnb1kbnr/1p1p1ppp/pq2p3/8/3NP3/3B4/PPP2PPP/RNBQK2R w KQkq - 2 6",
        "hash": "8422913265758470491",
        "name": "Sicilian: Kan, 5.Bd3 Qb6"
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    "B42d": {
        "eco": "B42d",
        "fen": "rnb1kbnr/1pqp1ppp/p3p3/8/3NP3/3B4/PPP2PPP/RNBQK2R w KQkq - 2 6",
        "hash": "13043818202276370560",
        "name": "Sicilian: Kan, 5.Bd3 Qc7"
    },
    "B42e": {
        "eco": "B42e",
        "fen": "r1bqkbnr/1p1p1ppp/p1n1p3/8/3NP3/3B4/PPP2PPP/RNBQK2R w KQkq - 2 6",
        "hash": "1798647403884049026",
        "name": "Sicilian: Kan, 5.Bd3 Nc6"
    },
    "B42f": {
        "eco": "B42f",
        "fen": "rnbqk1nr/1p1p1ppp/p3p3/2b5/3NP3/3B4/PPP2PPP/RNBQK2R w KQkq - 2 6",
        "hash": "2163567240120417538",
        "name": "Sicilian: Kan, Polugaevsky Variation"
    },
    "B42g": {
        "eco": "B42g",
        "fen": "rnbqk1nr/bp1p1ppp/p3p3/8/4P3/1N1B4/PPP2PPP/RNBQK2R w KQkq - 4 7",
        "hash": "5454888564508124108",
        "name": "Sicilian: Kan, Polugaevsky, 6.Nb3 Ba7"
    },
    "B42h": {
        "eco": "B42h",
        "fen": "rnbqkb1r/1p1p1ppp/p3pn2/8/3NP3/3B4/PPP2PPP/RNBQK2R w KQkq - 2 6",
        "hash": "16786596275092198935",
        "name": "Sicilian: Kan, 5.Bd3 Nf6"
    },
    "B42i": {
        "eco": "B42i",
        "fen": "rnbqkb1r/1p3ppp/p2ppn2/8/3NP3/3B4/PPP2PPP/RNBQ1RK1 w kq - 0 7",
        "hash": "12626427641508889706",
        "name": "Sicilian: Kan, 5.Bd3 Nf6 6.O-O d6"
    },
    "B42j": {
        "eco": "B42j",
        "fen": "rnbqkb1r/1p3ppp/p2ppn2/8/2PNP3/3B4/PP3PPP/RNBQ1RK1 b kq c3 0 7",
        "hash": "2529204598355275629",
        "name": "Sicilian: Kan, 5.Bd3 Nf6 6.O-O d6 7.c4"
    },
    "B42k": {
        "eco": "B42k",
        "fen": "rnbqkb1r/1p3p1p/p2ppnp1/8/2PNP3/3B4/PP3PPP/RNBQ1RK1 w kq - 0 8",
        "hash": "14604568267106270502",
        "name": "Sicilian: Kan, Gipslis Variation"
    },
    "B42l": {
        "eco": "B42l",
        "fen": "rnb1kb1r/1pqp1ppp/p3pn2/8/3NP3/3B4/PPP2PPP/RNBQ1RK1 w kq - 4 7",
        "hash": "10421255090592317958",
        "name": "Sicilian: Kan, 5.Bd3 Nf6 6.O-O Qc7"
    },
    "B42m": {
        "eco": "B42m",
        "fen": "rnb1kb1r/1pqp1ppp/p3pn2/8/2PNP3/3B4/PP3PPP/RNBQ1RK1 b kq c3 0 7",
        "hash": "2070568884833036545",
        "name": "Sicilian: Kan, 5.Bd3 Nf6 6.O-O Qc7 7.c4"
    },
    "B42n": {
        "eco": "B42n",
        "fen": "rnb1kb1r/1pqp1ppp/p3pn2/8/3NP3/3B4/PPP1QPPP/RNB2RK1 b kq - 5 7",
        "hash": "475467758008064386",
        "name": "Sicilian: Kan, 5.Bd3 Nf6 6.O-O Qc7 7.Qe2"
    },
    "B42o": {
        "eco": "B42o",
        "fen": "rnb1kb1r/1pq2ppp/p2ppn2/8/2PNP3/3B4/PP2QPPP/RNB2RK1 b kq c3 0 8",
        "hash": "12898373300745354216",
        "name": "Sicilian: Kan, 5.Bd3 Nf6 6.O-O Qc7 7.Qe2 d6 8.c4"
    },
    "B43a": {
        "eco": "B43a",
        "fen": "rnbqkbnr/1p1p1ppp/p3p3/8/3NP3/2N5/PPP2PPP/R1BQKB1R b KQkq - 1 5",
        "hash": "2126109872811153195",
        "name": "Sicilian: Kan, 5.Nc3"
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    "B43b": {
        "eco": "B43b",
        "fen": "rnbqkbnr/1p3ppp/p2pp3/8/3NP3/2N5/PPP2PPP/R1BQKB1R w KQkq - 0 6",
        "hash": "2610930874172333638",
        "name": "Sicilian: Kan, 5.Nc3 d6"
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    "B43c": {
        "eco": "B43c",
        "fen": "rnbqkbnr/3p1ppp/p3p3/1p6/3NP3/2N5/PPP2PPP/R1BQKB1R w KQkq b6 0 6",
        "hash": "9044670334828128790",
        "name": "Sicilian: Kan, 5.Nc3 b5"
    },
    "B43d": {
        "eco": "B43d",
        "fen": "rnbqkbnr/3p1ppp/p3p3/1p6/3NP3/2NB4/PPP2PPP/R1BQK2R b KQkq - 1 6",
        "hash": "2920793392402229349",
        "name": "Sicilian: Kan, 5.Nc3 b5 6.Bd3"
    },
    "B43e": {
        "eco": "B43e",
        "fen": "rnb1kbnr/3p1ppp/pq2p3/1p6/3NP3/2NB4/PPP2PPP/R1BQK2R w KQkq - 2 7",
        "hash": "17255331184976248511",
        "name": "Sicilian: Kan, 5.Nc3 b5 6.Bd3 Qb6"
    },
    "B43f": {
        "eco": "B43f",
        "fen": "rnb1kbnr/3p1ppp/pq2p3/1p6/4P3/1NNB4/PPP2PPP/R1BQK2R b KQkq - 3 7",
        "hash": "8864905301697853557",
        "name": "Sicilian: Kan, 5.Nc3 b5 6.Bd3 Qb6 7.Nb3"
    },
    "B43g": {
        "eco": "B43g",
        "fen": "rnb1kbnr/1pqp1ppp/p3p3/8/3NP3/2N5/PPP2PPP/R1BQKB1R w KQkq - 2 6",
        "hash": "1990110047381182506",
        "name": "Sicilian: Kan, 5.Nc3 Qc7"
    },
    "B43h": {
        "eco": "B43h",
        "fen": "rnb1kbnr/1pqp1ppp/p3p3/8/3NP3/2N3P1/PPP2P1P/R1BQKB1R b KQkq - 0 6",
        "hash": "3997210521974636562",
        "name": "Sicilian: Kan, 5.Nc3 Qc7 6.g3"
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    "B43i": {
        "eco": "B43i",
        "fen": "rnb1kb1r/1pqp1ppp/p3pn2/8/3NP3/2N3P1/PPP2P1P/R1BQKB1R w KQkq - 1 7",
        "hash": "7824658277164827012",
        "name": "Sicilian: Kan, 5.Nc3 Qc7 6.g3 Nf6"
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    "B43j": {
        "eco": "B43j",
        "fen": "rnb1kbnr/1pqp1ppp/p3p3/8/3NP3/2N5/PPP1BPPP/R1BQK2R b KQkq - 3 6",
        "hash": "7502655521903743625",
        "name": "Sicilian: Kan, 5.Nc3 Qc7 6.Be2"
    },
    "B43k": {
        "eco": "B43k",
        "fen": "rnb1kb1r/1pqp1ppp/p3pn2/8/3NP3/2N5/PPP1BPPP/R1BQK2R w KQkq - 4 7",
        "hash": "3742770050546291487",
        "name": "Sicilian: Kan, 5.Nc3 Qc7 6.Be2 Nf6"
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    "B43l": {
        "eco": "B43l",
        "fen": "rnb1kb1r/1pqp1ppp/p3pn2/8/3NP3/2N5/PPP1BPPP/R1BQ1RK1 b kq - 5 7",
        "hash": "5586019018700720143",
        "name": "Sicilian: Kan, 5.Nc3 Qc7 6.Be2 Nf6 7.O-O"
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    "B43m": {
        "eco": "B43m",
        "fen": "rnb1kbnr/1pqp1ppp/p3p3/8/3NP3/2NB4/PPP2PPP/R1BQK2R b KQkq - 3 6",
        "hash": "5662127720001673817",
        "name": "Sicilian: Kan, 5.Nc3 Qc7 6.Bd3"
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    "B43n": {
        "eco": "B43n",
        "fen": "rnb1kb1r/1pqp1ppp/p3pn2/8/3NP3/2NB4/PPP2PPP/R1BQK2R w KQkq - 4 7",
        "hash": "1548639986401532879",
        "name": "Sicilian: Kan, 5.Nc3 Qc7 6.Bd3 Nf6"
    },
    "B43o": {
        "eco": "B43o",
        "fen": "rnb1kb1r/1pqp1ppp/p3pn2/8/3NP3/2NB4/PPP2PPP/R1BQ1RK1 b kq - 5 7",
        "hash": "7712595681140932831",
        "name": "Sicilian: Kan, 5.Nc3 Qc7 6.Bd3 Nf6 7.O-O"
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    "B44a": {
        "eco": "B44a",
        "fen": "r1bqkbnr/pp1p1ppp/2n1p3/8/3NP3/8/PPP2PPP/RNBQKB1R w KQkq - 1 5",
        "hash": "11460610026420291629",
        "name": "Sicilian: Taimanov"
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    "B44b": {
        "eco": "B44b",
        "fen": "r1bqkbnr/pp1p1ppp/2n1p3/8/3NP3/6P1/PPP2P1P/RNBQKB1R b KQkq - 0 5",
        "hash": "12964455235037171733",
        "name": "Sicilian: Taimanov, 5.g3"
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    "B44c": {
        "eco": "B44c",
        "fen": "r1bqkbnr/pp1p1ppp/2n1p3/8/3NP3/8/PPP1BPPP/RNBQK2R b KQkq - 2 5",
        "hash": "17045218455099966094",
        "name": "Sicilian: Taimanov, 5.Be2"
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    "B44d": {
        "eco": "B44d",
        "fen": "r1bqkbnr/pp1p1ppp/2n1p3/8/2PNP3/8/PP3PPP/RNBQKB1R b KQkq c3 0 5",
        "hash": "1382564667225826090",
        "name": "Sicilian: Taimanov, 5.c4"
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    "B44e": {
        "eco": "B44e",
        "fen": "r1bqkb1r/pp1p1ppp/2n1pn2/8/2PNP3/2N5/PP3PPP/R1BQKB1R b KQkq - 2 6",
        "hash": "12922788216265285733",
        "name": "Sicilian: Taimanov, 5.c4 Nf6 6.Nc3"
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    "B44f": {
        "eco": "B44f",
        "fen": "r1bqk2r/p2p1ppp/2p1pn2/8/1bP1P3/2N5/PP3PPP/R1BQKB1R w KQkq - 0 8",
        "hash": "16934654333584157433",
        "name": "Sicilian: Taimanov, 5.c4 Nf6 6.Nc3 Bb4 7.Nxc6 bxc6"
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    "B44g": {
        "eco": "B44g",
        "fen": "r1bqkbnr/pp1p1ppp/2n1p3/8/3NP3/4B3/PPP2PPP/RN1QKB1R b KQkq - 2 5",
        "hash": "17006999523261010851",
        "name": "Sicilian: Taimanov, 5.Be3"
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    "B44h": {
        "eco": "B44h",
        "fen": "r1bqkb1r/pp1p1ppp/2n1pn2/8/3NP3/4B3/PPP2PPP/RN1QKB1R w KQkq - 3 6",
        "hash": "13252628055204008501",
        "name": "Sicilian: Taimanov, 5.Be3 Nf6"
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    "B44i": {
        "eco": "B44i",
        "fen": "r1bqkbnr/pp1p1ppp/2N1p3/8/4P3/8/PPP2PPP/RNBQKB1R b KQkq - 0 5",
        "hash": "15244394769990533400",
        "name": "Sicilian: Taimanov, 5.Nxc6"
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    "B44j": {
        "eco": "B44j",
        "fen": "r1bqkbnr/p2p1ppp/2p1p3/8/4P3/3B4/PPP2PPP/RNBQK2R b KQkq - 1 6",
        "hash": "6563294641338206432",
        "name": "Sicilian: Taimanov, 5.Nxc6 bxc6 6.Bd3"
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    "B44k": {
        "eco": "B44k",
        "fen": "r1bqkbnr/pp1p1ppp/2n1p3/1N6/4P3/8/PPP2PPP/RNBQKB1R b KQkq - 2 5",
        "hash": "7667007229414863483",
        "name": "Sicilian, Taimanov, Szen Variation"
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    "B44l": {
        "eco": "B44l",
        "fen": "r1bqkbnr/pp3ppp/2npp3/1N6/4PB2/8/PPP2PPP/RN1QKB1R b KQkq - 1 6",
        "hash": "9838358114645528949",
        "name": "Sicilian, Taimanov, Szen, 6.Bf4"
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    "B44m": {
        "eco": "B44m",
        "fen": "r1bqkbnr/1p3ppp/p1np4/1N2p3/4P3/4B3/PPP2PPP/RN1QKB1R w KQkq - 0 8",
        "hash": "1021341234959626272",
        "name": "Sicilian, Taimanov, Szen, 6.Bf4 e5 7.Be3 a6"
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    "B44n": {
        "eco": "B44n",
        "fen": "r1bqkb1r/pp3ppp/2np1n2/1N2p3/4P3/4B3/PPP2PPP/RN1QKB1R w KQkq - 2 8",
        "hash": "9742778544175483242",
        "name": "Sicilian, Taimanov, Szen, 6.Bf4 e5 7.Be3 Nf6"
    },
    "B44o": {
        "eco": "B44o",
        "fen": "r1bqkbnr/pp3ppp/2npp3/1N6/2P1P3/8/PP3PPP/RNBQKB1R b KQkq c3 0 6",
        "hash": "16140803420811956241",
        "name": "Sicilian, Taimanov, Szen, 6.c4"
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    "B44p": {
        "eco": "B44p",
        "fen": "r1bqkb1r/pp3ppp/2nppn2/8/2P1P3/2N5/PP3PPP/RNBQKB1R b KQkq - 2 7",
        "hash": "8126702107533821821",
        "name": "Sicilian, Taimanov, Szen, 7.N5c3"
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    "B44q": {
        "eco": "B44q",
        "fen": "r1bqkb1r/pp3ppp/2nppn2/1N6/2P1P3/2N5/PP3PPP/R1BQKB1R b KQkq - 2 7",
        "hash": "9189185363689657182",
        "name": "Sicilian, Taimanov, Szen, 7.N1c3"
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    "B44r": {
        "eco": "B44r",
        "fen": "r1bqkb1r/1p3ppp/p1nppn2/8/2P1P3/N1N5/PP3PPP/R1BQKB1R b KQkq - 1 8",
        "hash": "11950012587586490479",
        "name": "Sicilian, Taimanov, Szen, 7.N1c3 a6 8.Na3"
    },
    "B44s": {
        "eco": "B44s",
        "fen": "r1bqkb1r/5ppp/ppnppn2/8/2P1P3/N1N5/PP3PPP/R1BQKB1R w KQkq - 0 9",
        "hash": "14897819823542740980",
        "name": "Sicilian, Taimanov, Szen, 7.N1c3 a6 8.Na3 b6"
    },
    "B44t": {
        "eco": "B44t",
        "fen": "r1bqk2r/1p2bppp/p1nppn2/8/2P1P3/N1N5/PP3PPP/R1BQKB1R w KQkq - 2 9",
        "hash": "12761665110303423742",
        "name": "Sicilian, Taimanov, Szen, 7.N1c3 a6 8.Na3 Be7"
    },
    "B44u": {
        "eco": "B44u",
        "fen": "r1bqk2r/1p2bppp/p1nppn2/8/2P1P3/N1N5/PP2BPPP/R1BQK2R b KQkq - 3 9",
        "hash": "14022530511852074589",
        "name": "Sicilian, Taimanov, Szen, 7.N1c3 a6 8.Na3 Be7 9.Be2"
    },
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        "eco": "B44v",
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        "hash": "7098908428682528245",
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        "eco": "B47u",
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        "eco": "B47v",
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        "eco": "B47w",
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        "eco": "B47x",
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        "hash": "6803037557568333331",
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        "hash": "16961512815129344263",
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        "eco": "B48i",
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        "hash": "1708458983908405110",
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        "hash": "4877638837064078386",
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        "hash": "3766658834987536195",
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        "hash": "10763855709437179522",
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        "hash": "9344008609244879379",
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        "hash": "6638742061806255776",
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        "hash": "11508216360170634730",
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        "hash": "3199321298215767711",
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        "hash": "825243925660332080",
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        "hash": "2804084774225879540",
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        "hash": "17314591181572173117",
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        "hash": "12369131999015873707",
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    "B50p": {
        "eco": "B50p",
        "fen": "rnbqkb1r/pp2pppp/3p1n2/2p5/2B1P3/2P2N2/PP1P1PPP/RNBQK2R b KQkq - 2 4",
        "hash": "14417227664911890957",
        "name": "Sicilian: 2.Nf3 d6 3.c3 Nf6 4.Bc4"
    },
    "B50q": {
        "eco": "B50q",
        "fen": "rnbqkb1r/pp2pppp/3p1n2/2p5/4P3/2PB1N2/PP1P1PPP/RNBQK2R b KQkq - 2 4",
        "hash": "18350582603461095128",
        "name": "Sicilian: 2.Nf3 d6 3.c3 Nf6 4.Bd3"
    },
    "B50r": {
        "eco": "B50r",
        "fen": "r1bqkb1r/pp2pppp/2np1n2/2p5/4P3/2PB1N2/PP1P1PPP/RNBQK2R w KQkq - 3 5",
        "hash": "6145026747656260571",
        "name": "Sicilian: 2.Nf3 d6 3.c3 Nf6 4.Bd3 Nc6"
    },
    "B50s": {
        "eco": "B50s",
        "fen": "rnbqkb1r/pp2pppp/3p1n2/2p5/4P3/2P2N2/PP1PBPPP/RNBQK2R b KQkq - 2 4",
        "hash": "15575558564182713864",
        "name": "Sicilian: 2.Nf3 d6 3.c3 Nf6 4.Be2"
    },
    "B50t": {
        "eco": "B50t",
        "fen": "r1bqkb1r/pp2pppp/2np1n2/2p5/4P3/2P2N2/PP1PBPPP/RNBQK2R w KQkq - 3 5",
        "hash": "8343665014832808715",
        "name": "Sicilian: 2.Nf3 d6 3.c3 Nf6 4.Be2 Nc6"
    },
    "B50u": {
        "eco": "B50u",
        "fen": "r1bqkb1r/pp1npppp/3p1n2/2p5/4P3/2P2N2/PP1PBPPP/RNBQK2R w KQkq - 3 5",
        "hash": "16988708780207213508",
        "name": "Sicilian: 2.Nf3 d6 3.c3 Nf6 4.Be2 Nbd7"
    },
    "B50v": {
        "eco": "B50v",
        "fen": "rnbqkb1r/pp2pp1p/3p1np1/2p5/4P3/2P2N2/PP1PBPPP/RNBQK2R w KQkq - 0 5",
        "hash": "3572248024130843715",
        "name": "Sicilian: 2.Nf3 d6 3.c3 Nf6 4.Be2 g6"
    },
    "B50w": {
        "eco": "B50w",
        "fen": "rnbqk2r/pp2ppbp/3p1np1/1Bp5/4P3/2P2N2/PP1P1PPP/RNBQ1RK1 b kq - 3 6",
        "hash": "5175232838954039504",
        "name": "Sicilian: 2.Nf3 d6 3.c3, Torre Variation"
    },
    "B51a": {
        "eco": "B51a",
        "fen": "rnbqkbnr/pp2pppp/3p4/1Bp5/4P3/5N2/PPPP1PPP/RNBQK2R b KQkq - 1 3",
        "hash": "13064346338305306936",
        "name": "Sicilian: 3.Bb5+"
    },
    "B51b": {
        "eco": "B51b",
        "fen": "r1bqkbnr/pp1npppp/3p4/1Bp5/4P3/2P2N2/PP1P1PPP/RNBQK2R b KQkq - 0 4",
        "hash": "17326581435410420594",
        "name": "Sicilian: 3.Bb5+ Nd7 4.c3"
    },
    "B51c": {
        "eco": "B51c",
        "fen": "r1bqkbnr/pp1npppp/3p4/1Bp5/4P3/5N2/PPPP1PPP/RNBQ1RK1 b kq - 3 4",
        "hash": "17932174484132317156",
        "name": "Sicilian: 3.Bb5+ Nd7 4.O-O"
    },
    "B51d": {
        "eco": "B51d",
        "fen": "r1bqkb1r/pp1npppp/3p1n2/1Bp5/4P3/5N2/PPPP1PPP/RNBQ1RK1 w kq - 4 5",
        "hash": "11760540588447729266",
        "name": "Sicilian: 3.Bb5+ Nd7 4.O-O Nf6"
    },
    "B51e": {
        "eco": "B51e",
        "fen": "r1bqkb1r/1p1npppp/p2p1n2/2p5/4P3/5N2/PPPP1PPP/RNBQRBK1 b kq - 1 6",
        "hash": "14314968002529936953",
        "name": "Sicilian: 3.Bb5+ Nd7 4.O-O Nf6 5.Re1 a6 6.Bf1"
    },
    "B51f": {
        "eco": "B51f",
        "fen": "r1bqkbnr/pp1npppp/3p4/1Bp5/3PP3/5N2/PPP2PPP/RNBQK2R b KQkq d3 0 4",
        "hash": "4871686644731556278",
        "name": "Sicilian: 3.Bb5+ Nd7 4.d4"
    },
    "B51g": {
        "eco": "B51g",
        "fen": "r1bqkb1r/pp1npppp/3p1n2/1Bp5/3PP3/5N2/PPP2PPP/RNBQK2R w KQkq - 1 5",
        "hash": "1762457510176321568",
        "name": "Sicilian: 3.Bb5+ Nd7 4.d4 Nf6"
    },
    "B51h": {
        "eco": "B51h",
        "fen": "r1bqkb1r/pp1npppp/3p1n2/1Bp5/3PP3/2N2N2/PPP2PPP/R1BQK2R b KQkq - 2 5",
        "hash": "16420855855838524153",
        "name": "Sicilian: 3.Bb5+ Nd7 4.d4 Nf6 5.Nc3"
    },
    "B51i": {
        "eco": "B51i",
        "fen": "r1bqkb1r/pp1npppp/3p1n2/1B6/3pP3/2N2N2/PPP2PPP/R1BQK2R w KQkq - 0 6",
        "hash": "13617798213704719167",
        "name": "Sicilian: 3.Bb5+ Nd7 4.d4 Nf6 5.Nc3 cxd4"
    },
    "B51j": {
        "eco": "B51j",
        "fen": "r1bqkb1r/pp1n1ppp/3p1n2/1B2p3/3QP3/2N2N2/PPP2PPP/R1B1K2R w KQkq e6 0 7",
        "hash": "5418741699120041012",
        "name": "Sicilian: 3.Bb5+ Nd7 4.d4 Nf6 5.Nc3 cxd4 6.Qxd4 e5"
    },
    "B51k": {
        "eco": "B51k",
        "fen": "r1bqkbnr/pp2pppp/2np4/1Bp5/4P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 2 4",
        "hash": "2206826647629157435",
        "name": "Sicilian: 3.Bb5+ Nc6"
    },
    "B51l": {
        "eco": "B51l",
        "fen": "r1bqkbnr/pp2pppp/2Bp4/2p5/4P3/5N2/PPPP1PPP/RNBQK2R b KQkq - 0 4",
        "hash": "5732804984213046272",
        "name": "Sicilian: 3.Bb5+ Nc6 4.Bxc6+"
    },
    "B51m": {
        "eco": "B51m",
        "fen": "r1bqkbnr/pp2pppp/2np4/1Bp5/4P3/5N2/PPPP1PPP/RNBQ1RK1 b kq - 3 4",
        "hash": "6977555837124251435",
        "name": "Sicilian: 3.Bb5+ Nc6 4.O-O"
    },
    "B51n": {
        "eco": "B51n",
        "fen": "r2qkbnr/pp1bpppp/2np4/1Bp5/4P3/5N2/PPPP1PPP/RNBQ1RK1 w kq - 4 5",
        "hash": "9373323717903671066",
        "name": "Sicilian: 3.Bb5+ Nc6 4.O-O Bd7"
    },
    "B51o": {
        "eco": "B51o",
        "fen": "r2qkbnr/pp1bpppp/2np4/1Bp5/4P3/5N2/PPPP1PPP/RNBQR1K1 b kq - 5 5",
        "hash": "477578140849075214",
        "name": "Sicilian: 3.Bb5+ Nc6 4.O-O Bd7 5.Re1"
    },
    "B51p": {
        "eco": "B51p",
        "fen": "r2qkbnr/1p1bpppp/p1np4/1Bp5/4P3/5N2/PPPP1PPP/RNBQR1K1 w kq - 0 6",
        "hash": "15300772175584955602",
        "name": "Sicilian: 3.Bb5+ Nc6 4.O-O Bd7 5.Re1 a6"
    },
    "B51q": {
        "eco": "B51q",
        "fen": "r2qkb1r/pp1bpppp/2np1n2/1Bp5/4P3/5N2/PPPP1PPP/RNBQR1K1 w kq - 6 6",
        "hash": "6723458887044216216",
        "name": "Sicilian: 3.Bb5+ Nc6 4.O-O Bd7 5.Re1 Nf6"
    },
    "B51r": {
        "eco": "B51r",
        "fen": "r2qkb1r/pp1bpppp/2np1n2/1Bp5/4P3/2P2N2/PP1P1PPP/RNBQR1K1 b kq - 0 6",
        "hash": "3140274085444368926",
        "name": "Sicilian: 3.Bb5+ Nc6 4.O-O Bd7 5.Re1 Nf6 6.c3"
    },
    "B51s": {
        "eco": "B51s",
        "fen": "r2qkb1r/1p1bpppp/p1np1n2/2p5/B3P3/2P2N2/PP1P1PPP/RNBQR1K1 b kq - 1 7",
        "hash": "14438752699192196072",
        "name": "Sicilian: 3.Bb5+ Nc6 4.O-O Bd7 5.Re1 Nf6 6.c3 a6 7.Ba4"
    },
    "B51t": {
        "eco": "B51t",
        "fen": "r2qkb1r/1p1bpppp/p1np1n2/2p5/4P3/2P2N2/PP1P1PPP/RNBQRBK1 b kq - 1 7",
        "hash": "14608937185822560577",
        "name": "Sicilian: 3.Bb5+ Nc6 4.O-O Bd7 5.Re1 Nf6 6.c3 a6 7.Bf1"
    },
    "B51u": {
        "eco": "B51u",
        "fen": "r2qkb1r/1p2pppp/p1np1n2/2p5/4P1b1/2P2N1P/PP1P1PP1/RNBQRBK1 b kq - 0 8",
        "hash": "4218344035270083425",
        "name": "Sicilian: 3.Bb5+ Nc6 4.O-O Bd7 5.Re1 Nf6 6.c3 a6 7.Bf1 Bg4 8.h3"
    },
    "B52a": {
        "eco": "B52a",
        "fen": "rn1qkbnr/pp1bpppp/3p4/1Bp5/4P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 2 4",
        "hash": "6308451898672685321",
        "name": "Sicilian: 3.Bb5+ Bd7"
    },
    "B52b": {
        "eco": "B52b",
        "fen": "r2qkbnr/pp1npppp/3p4/2p5/4P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 0 5",
        "hash": "6586469493751640690",
        "name": "Sicilian: 3.Bb5+ Bd7 4.Bxd7+ Nxd7"
    },
    "B52c": {
        "eco": "B52c",
        "fen": "r2qkbnr/pp1npppp/3p4/2p5/4P3/5N2/PPPP1PPP/RNBQ1RK1 b kq - 1 5",
        "hash": "2671386850604656994",
        "name": "Sicilian: 3.Bb5+ Bd7 4.Bxd7+ Nxd7 5.O-O"
    },
    "B52d": {
        "eco": "B52d",
        "fen": "r2qkb1r/pp1npppp/3p1n2/2p5/4P3/5N2/PPPP1PPP/RNBQ1RK1 w kq - 2 6",
        "hash": "9150356606893615348",
        "name": "Sicilian: 3.Bb5+ Bd7 4.Bxd7+ Nxd7 5.O-O Ngf6"
    },
    "B52e": {
        "eco": "B52e",
        "fen": "r2qkb1r/pp1npppp/3p1n2/2p5/4P3/5N2/PPPPQPPP/RNB2RK1 b kq - 3 6",
        "hash": "16787756915908064112",
        "name": "Sicilian: 3.Bb5+ Bd7 4.Bxd7+ Nxd7 5.O-O Ngf6 6.Qe2"
    },
    "B52f": {
        "eco": "B52f",
        "fen": "rn2kbnr/pp1qpppp/3p4/2p5/4P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 0 5",
        "hash": "8437469234707909361",
        "name": "Sicilian: 3.Bb5+ Bd7 4.Bxd7+ Qxd7"
    },
    "B52g": {
        "eco": "B52g",
        "fen": "rn2kbnr/pp1qpppp/3p4/2p5/2P1P3/5N2/PP1P1PPP/RNBQK2R b KQkq c3 0 5",
        "hash": "17957108133876916726",
        "name": "Sicilian: 3.Bb5+, Sokolsky Variation"
    },
    "B52h": {
        "eco": "B52h",
        "fen": "r3kbnr/pp1qpppp/2np4/2p5/2P1P3/5N2/PP1P1PPP/RNBQK2R w KQkq - 1 6",
        "hash": "5969994469348689141",
        "name": "Sicilian: 3.Bb5+, Sokolsky, 5...Nc6"
    },
    "B52i": {
        "eco": "B52i",
        "fen": "r3kbnr/pp1qpppp/2np4/2p5/2P1P3/5N2/PP1P1PPP/RNBQ1RK1 b kq - 2 6",
        "hash": "3219182453035933669",
        "name": "Sicilian: 3.Bb5+, Sokolsky, 5...Nc6 6.O-O"
    },
    "B52j": {
        "eco": "B52j",
        "fen": "r3kb1r/pp1qpppp/2np1n2/2p5/2P1P3/5N2/PP1P1PPP/RNBQ1RK1 w kq - 3 7",
        "hash": "8593679078599089779",
        "name": "Sicilian: 3.Bb5+, Sokolsky, 5...Nc6 6.O-O Nf6"
    },
    "B52k": {
        "eco": "B52k",
        "fen": "r3kbnr/pp1qpppp/2np4/2p5/2P1P3/2N2N2/PP1P1PPP/R1BQK2R b KQkq - 2 6",
        "hash": "12199889600393627180",
        "name": "Sicilian: 3.Bb5+, Sokolsky, 5...Nc6 6.Nc3"
    },
    "B52l": {
        "eco": "B52l",
        "fen": "r3kb1r/pp1qpppp/2np1n2/2p5/2P1P3/2N2N2/PP1P1PPP/R1BQK2R w KQkq - 3 7",
        "hash": "17483116696532912058",
        "name": "Sicilian: 3.Bb5+, Sokolsky, 5...Nc6 6.Nc3 Nf6"
    },
    "B52m": {
        "eco": "B52m",
        "fen": "r3kb1r/pp1qpppp/2np1n2/2p5/2P1P3/2N2N2/PP1P1PPP/R1BQ1RK1 b kq - 4 7",
        "hash": "10148291345596832938",
        "name": "Sicilian: 3.Bb5+, Sokolsky, 5...Nc6 6.Nc3 Nf6 7.O-O"
    },
    "B52n": {
        "eco": "B52n",
        "fen": "rn2kbnr/pp1qpppp/3p4/2p5/4P3/5N2/PPPP1PPP/RNBQ1RK1 b kq - 1 5",
        "hash": "820379318545715681",
        "name": "Sicilian: 3.Bb5+ Bd7 4.Bxd7+ Qxd7 5.O-O"
    },
    "B52o": {
        "eco": "B52o",
        "fen": "r3kbnr/pp1qpppp/2np4/2p5/4P3/5N2/PPPP1PPP/RNBQ1RK1 w kq - 2 6",
        "hash": "11569547635860649186",
        "name": "Sicilian: 3.Bb5+ Bd7 4.Bxd7+ Qxd7 5.O-O Nc6"
    },
    "B52p": {
        "eco": "B52p",
        "fen": "r3kbnr/pp1qpppp/2np4/2p5/4P3/5N2/PPPP1PPP/RNBQR1K1 b kq - 3 6",
        "hash": "2610756057605578742",
        "name": "Sicilian: 3.Bb5+ Bd7 4.Bxd7+ Qxd7 5.O-O Nc6 6.Re1"
    },
    "B52q": {
        "eco": "B52q",
        "fen": "r3kb1r/pp1qpppp/2np1n2/2p5/4P3/5N2/PPPP1PPP/RNBQR1K1 w kq - 4 7",
        "hash": "9211392002925387360",
        "name": "Sicilian: 3.Bb5+ Bd7 4.Bxd7+ Qxd7 5.O-O Nc6 6.Re1 Nf6"
    },
    "B52r": {
        "eco": "B52r",
        "fen": "r3kbnr/pp1qpppp/2np4/2p5/4P3/2P2N2/PP1P1PPP/RNBQ1RK1 b kq - 0 6",
        "hash": "15444447163808955236",
        "name": "Sicilian: 3.Bb5+ Bd7 4.Bxd7+ Qxd7 5.O-O Nc6 6.c3"
    },
    "B52s": {
        "eco": "B52s",
        "fen": "r3kb1r/pp1qpppp/2np1n2/2p5/4P3/2P2N2/PP1P1PPP/RNBQ1RK1 w kq - 1 7",
        "hash": "10212904102101613298",
        "name": "Sicilian: 3.Bb5+ Bd7 4.Bxd7+ Qxd7 5.O-O Nc6 6.c3 Nf6"
    },
    "B52t": {
        "eco": "B52t",
        "fen": "r3kb1r/pp1qpppp/2np1n2/2p5/3PP3/2P2N2/PP3PPP/RNBQ1RK1 b kq d3 0 7",
        "hash": "5228302592079845296",
        "name": "Sicilian: 3.Bb5+, Bronstein Gambit"
    },
    "B53a": {
        "eco": "B53a",
        "fen": "rnbqkbnr/pp2pppp/3p4/2p5/3PP3/5N2/PPP2PPP/RNBQKB1R b KQkq d3 0 3",
        "hash": "4874618571889659897",
        "name": "Sicilian: 2...d6 3.d4"
    },
    "B53b": {
        "eco": "B53b",
        "fen": "rnbqkb1r/pp2pppp/3p1n2/2p5/3PP3/5N2/PPP2PPP/RNBQKB1R w KQkq - 1 4",
        "hash": "1749695966245228143",
        "name": "Sicilian: 2...d6 3.d4 Nf6"
    },
    "B53c": {
        "eco": "B53c",
        "fen": "rnbqkbnr/pp2pppp/3p4/8/3pP3/5N2/PPP2PPP/RNBQKB1R w KQkq - 0 4",
        "hash": "2069586508330116671",
        "name": "Sicilian: 2...d6 3.d4 cxd4"
    },
    "B53d": {
        "eco": "B53d",
        "fen": "rnbqkbnr/pp2pppp/3p4/8/3QP3/5N2/PPP2PPP/RNB1KB1R b KQkq - 0 4",
        "hash": "6994004677912480002",
        "name": "Sicilian, Chekhover Variation"
    },
    "B53e": {
        "eco": "B53e",
        "fen": "rn1qkbnr/pp1bpppp/3p4/8/3QP3/5N2/PPP2PPP/RNB1KB1R w KQkq - 1 5",
        "hash": "9497612640348674355",
        "name": "Sicilian, Chekhover, 4...Bd7"
    },
    "B53f": {
        "eco": "B53f",
        "fen": "rnbqkbnr/1p2pppp/p2p4/8/3QP3/5N2/PPP2PPP/RNB1KB1R w KQkq - 0 5",
        "hash": "12968189623343002078",
        "name": "Sicilian, Chekhover, 4...a6"
    },
    "B53g": {
        "eco": "B53g",
        "fen": "rnbqkbnr/1p2pppp/p2p4/8/3QP3/4BN2/PPP2PPP/RN2KB1R b KQkq - 1 5",
        "hash": "13902884924106353232",
        "name": "Sicilian, Chekhover, 4...a6 5.Be3"
    },
    "B53h": {
        "eco": "B53h",
        "fen": "rnbqkbnr/1p2pppp/p2p4/8/2PQP3/5N2/PP3PPP/RNB1KB1R b KQkq c3 0 5",
        "hash": "4601514321540520665",
        "name": "Sicilian, Chekhover, 4...a6 5.c4"
    },
    "B53i": {
        "eco": "B53i",
        "fen": "r1bqkbnr/1p2pppp/p1np4/8/2P1P3/5N2/PP1Q1PPP/RNB1KB1R b KQkq - 2 6",
        "hash": "2358968902206922927",
        "name": "Sicilian, Chekhover, 4...a6 5.c4 Nc6 6.Qd2"
    },
    "B53j": {
        "eco": "B53j",
        "fen": "r1bqkbnr/1p2pp1p/p1np2p1/8/2P1P3/5N2/PP1Q1PPP/RNB1KB1R w KQkq - 0 7",
        "hash": "14486090901630431972",
        "name": "Sicilian, Chekhover, 4...a6 5.c4 Nc6 6.Qd2 g6"
    },
    "B53k": {
        "eco": "B53k",
        "fen": "rnbqkb1r/pp2pppp/3p1n2/8/3QP3/5N2/PPP2PPP/RNB1KB1R w KQkq - 1 5",
        "hash": "4242820514518567060",
        "name": "Sicilian, Chekhover, 4...Nf6"
    },
    "B53l": {
        "eco": "B53l",
        "fen": "r1bqkbnr/pp2pppp/2np4/8/3QP3/5N2/PPP2PPP/RNB1KB1R w KQkq - 1 5",
        "hash": "14619364786043186177",
        "name": "Sicilian, Chekhover, 4...Nc6"
    },
    "B53m": {
        "eco": "B53m",
        "fen": "r1b1kbnr/pp1qpppp/2np4/1B6/3QP3/5N2/PPP2PPP/RNB1K2R w KQkq - 3 6",
        "hash": "16478669565216631501",
        "name": "Sicilian: Chekhover, Zaitsev Variation"
    },
    "B53n": {
        "eco": "B53n",
        "fen": "r2qkbnr/pp1bpppp/2np4/1B6/3QP3/5N2/PPP2PPP/RNB1K2R w KQkq - 3 6",
        "hash": "2016844269020196787",
        "name": "Sicilian, Chekhover, 4...Nc6 5.Bb5 Bd7"
    },
    "B53o": {
        "eco": "B53o",
        "fen": "r2qkbnr/pp2pppp/2bp4/8/3QP3/5N2/PPP2PPP/RNB1K2R w KQkq - 0 7",
        "hash": "5969183532317473723",
        "name": "Sicilian, Chekhover, 4...Nc6 5.Bb5 Bd7 6.Bxc6 Bxc6"
    },
    "B53p": {
        "eco": "B53p",
        "fen": "r2qkbnr/pp2pppp/2bp4/8/2PQP3/5N2/PP3PPP/RNB1K2R b KQkq c3 0 7",
        "hash": "16065839534527172796",
        "name": "Sicilian, Chekhover, 7.c4"
    },
    "B53q": {
        "eco": "B53q",
        "fen": "r2qkb1r/pp2pp1p/2bp1np1/8/2PQP3/2N2N2/PP3PPP/R1B1K2R w KQkq - 0 9",
        "hash": "10896508655071134136",
        "name": "Sicilian, Chekhover, 7.c4 Nf6 8.Nc3 g6"
    },
    "B53r": {
        "eco": "B53r",
        "fen": "r2qkbnr/pp2pppp/2bp4/8/3QP3/2N2N2/PPP2PPP/R1B1K2R b KQkq - 1 7",
        "hash": "12196262814004181346",
        "name": "Sicilian, Chekhover, 7.Nc3"
    },
    "B53s": {
        "eco": "B53s",
        "fen": "r2qkb1r/pp2pppp/2bp1n2/6B1/3QP3/2N2N2/PPP2PPP/R3K2R b KQkq - 3 8",
        "hash": "3816158200935670588",
        "name": "Sicilian, Chekhover, 7.Nc3 Nf6 8.Bg5"
    },
    "B53t": {
        "eco": "B53t",
        "fen": "r2qkb1r/pp3ppp/2bppn2/6B1/3QP3/2N2N2/PPP2PPP/R3K2R w KQkq - 0 9",
        "hash": "4792469486258385774",
        "name": "Sicilian, Chekhover, 7.Nc3 Nf6 8.Bg5 e6"
    },
    "B53u": {
        "eco": "B53u",
        "fen": "r2qk2r/pp2bppp/2bppn2/6B1/4P3/2NQ1N2/PPP2PPP/2KR3R b kq - 3 10",
        "hash": "5950989743373156805",
        "name": "Sicilian, Chekhover, Main Line, 10.Qd3"
    },
    "B53v": {
        "eco": "B53v",
        "fen": "r2qk2r/pp2bppp/2bppn2/6B1/3QP3/2N2N2/PPP2PPP/2KRR3 b kq - 3 10",
        "hash": "17385248130455475580",
        "name": "Sicilian, Chekhover, Main Line, 10.Rhe1"
    },
    "B53w": {
        "eco": "B53w",
        "fen": "r2q1rk1/pp2bppp/2bppn2/6B1/3QP3/2N2N2/PPP2PPP/2KRR3 w - - 4 11",
        "hash": "18152922301338451095",
        "name": "Sicilian, Chekhover, Main Line, 10.Rhe1 O-O"
    },
    "B53x": {
        "eco": "B53x",
        "fen": "r2q1rk1/pp2bppp/2bppn2/6B1/4P3/2N2N2/PPPQ1PPP/2KRR3 b - - 5 11",
        "hash": "5721430900100424674",
        "name": "Sicilian, Chekhover, Main Line, 11.Qd2"
    },
    "B54a": {
        "eco": "B54a",
        "fen": "rnbqkbnr/pp2pppp/3p4/8/3NP3/8/PPP2PPP/RNBQKB1R b KQkq - 0 4",
        "hash": "8875742382281503761",
        "name": "Sicilian: Open, 2...d6"
    },
    "B54b": {
        "eco": "B54b",
        "fen": "rnbqkbnr/pp3ppp/3p4/4p3/3NP3/8/PPP2PPP/RNBQKB1R w KQkq e6 0 5",
        "hash": "17389788911787658279",
        "name": "Sicilian: Open, 2...d6, 4...e5"
    },
    "B54c": {
        "eco": "B54c",
        "fen": "rnbqkbnr/1p2pppp/p2p4/8/3NP3/8/PPP2PPP/RNBQKB1R w KQkq - 0 5",
        "hash": "12239386686456614093",
        "name": "Sicilian: Open, 2...d6, 4...a6"
    },
    "B54d": {
        "eco": "B54d",
        "fen": "rnbqkb1r/pp2pppp/3p1n2/8/3NP3/8/PPP2PPP/RNBQKB1R w KQkq - 1 5",
        "hash": "2360673860543509895",
        "name": "Sicilian: Open, 2...d6, 4...Nf6"
    },
    "B54e": {
        "eco": "B54e",
        "fen": "rnbqkb1r/pp2pppp/3p1n2/8/3NP3/3B4/PPP2PPP/RNBQK2R b KQkq - 2 5",
        "hash": "8489124753087281140",
        "name": "Sicilian: Open, 2...d6, 4...Nf6 5.Bd3"
    },
    "B54f": {
        "eco": "B54f",
        "fen": "rnbqkb1r/pp2pppp/3p1n2/8/3NP3/5P2/PPP3PP/RNBQKB1R b KQkq - 0 5",
        "hash": "5652908616881281782",
        "name": "Sicilian: Prins (Moscow) Variation"
    },
    "B54g": {
        "eco": "B54g",
        "fen": "rnbqkb1r/pp3ppp/3ppn2/8/3NP3/5P2/PPP3PP/RNBQKB1R w KQkq - 0 6",
        "hash": "4036589067773053604",
        "name": "Sicilian: Prins (Moscow), 5...e6"
    },
    "B54h": {
        "eco": "B54h",
        "fen": "rnbqkb1r/1p2pppp/p2p1n2/8/3NP3/5P2/PPP3PP/RNBQKB1R w KQkq - 0 6",
        "hash": "11278380830706426410",
        "name": "Sicilian: Prins (Moscow), 5...a6"
    },
    "B54i": {
        "eco": "B54i",
        "fen": "r1bqkb1r/pp2pppp/2np1n2/8/3NP3/5P2/PPP3PP/RNBQKB1R w KQkq - 1 6",
        "hash": "16545928772057415669",
        "name": "Sicilian: Prins (Moscow), 5...Nc6"
    },
    "B54j": {
        "eco": "B54j",
        "fen": "r1bqkb1r/pp2pppp/3p1n2/8/2PnP3/5P2/PP4PP/RNBQKB1R w KQkq - 0 7",
        "hash": "14186031168957918641",
        "name": "Sicilian: Prins (Moscow), 5...Nc6 6.c4 Nxd4"
    },
    "B54k": {
        "eco": "B54k",
        "fen": "r1b1kb1r/pp2pppp/1qnp1n2/8/2PNP3/5P2/PP4PP/RNBQKB1R w KQkq - 1 7",
        "hash": "12556761431537730088",
        "name": "Sicilian: Prins (Moscow), 5...Nc6 6.c4 Qb6"
    },
    "B54l": {
        "eco": "B54l",
        "fen": "rnbqkb1r/pp3ppp/3p1n2/4p3/3NP3/5P2/PPP3PP/RNBQKB1R w KQkq e6 0 6",
        "hash": "14126422200014725824",
        "name": "Sicilian: Prins (Moscow), 5...e5"
    },
    "B54m": {
        "eco": "B54m",
        "fen": "rnbqkb1r/pp3ppp/3p1n2/4p3/4P3/1N3P2/PPP3PP/RNBQKB1R b KQkq - 1 6",
        "hash": "5798976093096911882",
        "name": "Sicilian: Prins (Moscow), 5...e5 6.Nb3"
    },
    "B54n": {
        "eco": "B54n",
        "fen": "rn1qkb1r/pp3ppp/3pbn2/4p3/4P3/1N3P2/PPP3PP/RNBQKB1R w KQkq - 2 7",
        "hash": "342987000153071362",
        "name": "Sicilian: Prins (Moscow), 5...e5 6.Nb3 Be6"
    },
    "B54o": {
        "eco": "B54o",
        "fen": "rnbqkb1r/pp3ppp/5n2/3pp3/4P3/1N3P2/PPP3PP/RNBQKB1R w KQkq - 0 7",
        "hash": "1476205237748213320",
        "name": "Sicilian: Prins (Moscow), 5...e5 6.Nb3 d5"
    },
    "B55": {
        "eco": "B55",
        "fen": "rnbqkb1r/pp3ppp/3p1n2/1B2p3/3NP3/5P2/PPP3PP/RNBQK2R b KQkq - 1 6",
        "hash": "17858447672487539011",
        "name": "Sicilian: Prins, Venice Attack"
    },
    "B56a": {
        "eco": "B56a",
        "fen": "rnbqkb1r/pp2pppp/3p1n2/8/3NP3/2N5/PPP2PPP/R1BQKB1R b KQkq - 2 5",
        "hash": "15804772648990046046",
        "name": "Sicilian: Open, 2...d6, 5.Nc3"
    },
    "B56b": {
        "eco": "B56b",
        "fen": "rnbqkb1r/pp3ppp/3p1n2/4p3/3NP3/2N5/PPP2PPP/R1BQKB1R w KQkq e6 0 6",
        "hash": "5849574166226374504",
        "name": "Sicilian: Open, 2...d6, 5.Nc3 e5"
    },
    "B56c": {
        "eco": "B56c",
        "fen": "rnbqkb1r/pp3ppp/3p1n2/1B2p3/3NP3/2N5/PPP2PPP/R1BQK2R b KQkq - 1 6",
        "hash": "7130057037637819627",
        "name": "Sicilian: Venice Attack"
    },
    "B56d": {
        "eco": "B56d",
        "fen": "r1bqkb1r/pp1npppp/3p1n2/8/3NP3/2N5/PPP2PPP/R1BQKB1R w KQkq - 3 6",
        "hash": "16768783369834371730",
        "name": "Sicilian: Open, 2...d6, 5.Nc3 Nbd7"
    },
    "B56e": {
        "eco": "B56e",
        "fen": "r1bqkb1r/pp1npppp/3p1n2/8/2BNP3/2N5/PPP2PPP/R1BQK2R b KQkq - 4 6",
        "hash": "10017443223027797044",
        "name": "Sicilian: Open, 2...d6, 5.Nc3 Nbd7 6.Bc4"
    },
    "B56f": {
        "eco": "B56f",
        "fen": "rn1qkb1r/pp1bpppp/3p1n2/8/3NP3/2N5/PPP2PPP/R1BQKB1R w KQkq - 3 6",
        "hash": "4148988085415618415",
        "name": "Sicilian: Open, 2...d6, 5.Nc3 Bd7"
    },
    "B56g": {
        "eco": "B56g",
        "fen": "rn1qkb1r/pp1bpppp/3p1n2/6B1/3NP3/2N5/PPP2PPP/R2QKB1R b KQkq - 4 6",
        "hash": "18432808419884563623",
        "name": "Sicilian: Open, 2...d6, 5.Nc3 Bd7 6.Bg5"
    },
    "B56h": {
        "eco": "B56h",
        "fen": "r1bqkb1r/pp2pppp/2np1n2/8/3NP3/2N5/PPP2PPP/R1BQKB1R w KQkq - 3 6",
        "hash": "8122255254093681245",
        "name": "Sicilian: Open, 2...d6 5.Nc3 Nc6"
    },
    "B56i": {
        "eco": "B56i",
        "fen": "r1bqkb1r/pp2pppp/2np1n2/8/3NP3/2N4P/PPP2PP1/R1BQKB1R b KQkq - 0 6",
        "hash": "10974095404188965807",
        "name": "Sicilian: Open, 2...d6, 5.Nc3 Nc6 6.h3"
    },
    "B56j": {
        "eco": "B56j",
        "fen": "r1bqkb1r/pp2pppp/2np1n2/8/3NP3/2N3P1/PPP2P1P/R1BQKB1R b KQkq - 0 6",
        "hash": "6655958919486769765",
        "name": "Sicilian: Open, 2...d6, 5.Nc3 Nc6 6.g3"
    },
    "B56k": {
        "eco": "B56k",
        "fen": "r1bqkb1r/pp2pppp/2np1n2/8/3NPP2/2N5/PPP3PP/R1BQKB1R b KQkq f3 0 6",
        "hash": "10209221734446198740",
        "name": "Sicilian: Open, 2...d6, 5.Nc3 Nc6 6.f4"
    },
    "B56l": {
        "eco": "B56l",
        "fen": "r1bqkb1r/pp2pppp/2np1n2/8/3NP3/2N2P2/PPP3PP/R1BQKB1R b KQkq - 0 6",
        "hash": "2164518583974444332",
        "name": "Sicilian: Open, 2...d6, 5.Nc3 Nc6 6.f3"
    },
    "B56m": {
        "eco": "B56m",
        "fen": "r1bqkb1r/pp3ppp/2np1n2/4p3/3NP3/2N2P2/PPP3PP/R1BQKB1R w KQkq e6 0 7",
        "hash": "10696579515689387290",
        "name": "Sicilian: Open, 2...d6, 5.Nc3 Nc6 6.f3 e5"
    },
    "B56n": {
        "eco": "B56n",
        "fen": "r1bqk2r/pp2bppp/2np1n2/4p3/4P3/1NN2P2/PPP3PP/R1BQKB1R w KQkq - 2 8",
        "hash": "1498759312139267905",
        "name": "Sicilian: Open, 2...d6, 5.Nc3 Nc6 6.f3 e5 7.Nb3 Be7"
    },
    "B56o": {
        "eco": "B56o",
        "fen": "r1bqkb1r/pp2pppp/2np1n2/8/3NP3/2N1B3/PPP2PPP/R2QKB1R b KQkq - 4 6",
        "hash": "265914629005756883",
        "name": "Sicilian: Open, 2...d6, 5.Nc3 Nc6 6.Be3"
    },
    "B56p": {
        "eco": "B56p",
        "fen": "r1bqkb1r/pp3ppp/2np1n2/4p3/3NP3/2N1B3/PPP2PPP/R2QKB1R w KQkq e6 0 7",
        "hash": "9928396178378076645",
        "name": "Sicilian: Open, 2...d6, 5.Nc3 Nc6 6.Be3 e5"
    },
    "B56q": {
        "eco": "B56q",
        "fen": "r1bqkb1r/pp2pppp/2np4/8/3NP1n1/2N1B3/PPP2PPP/R2QKB1R w KQkq - 5 7",
        "hash": "11426736800895162559",
        "name": "Sicilian: Open, 2...d6, 5.Nc3 Nc6 6.Be3 Ng4"
    },
    "B56r": {
        "eco": "B56r",
        "fen": "r1bqkb1r/pp2pppp/2np4/1B6/3NP1n1/2N1B3/PPP2PPP/R2QK2R b KQkq - 6 7",
        "hash": "12487704666767477564",
        "name": "Sicilian: Open, 2...d6, 5.Nc3 Nc6 6.Be3 Ng4 7.Bb5"
    },
    "B57a": {
        "eco": "B57a",
        "fen": "r1bqkb1r/pp2pppp/2np1n2/8/2BNP3/2N5/PPP2PPP/R1BQK2R b KQkq - 4 6",
        "hash": "1372393055999362299",
        "name": "Sicilian: Sozin"
    },
    "B57b": {
        "eco": "B57b",
        "fen": "r2qkb1r/pp1bpppp/2np1n2/8/2BNP3/2N5/PPP2PPP/R1BQK2R w KQkq - 5 7",
        "hash": "17422815504977155274",
        "name": "Sicilian: Sozin, 6...Bd7"
    },
    "B57c": {
        "eco": "B57c",
        "fen": "r2qkb1r/pp1bpppp/2np1n2/8/2BNP3/2N5/PPP2PPP/R1BQ1RK1 b kq - 6 7",
        "hash": "10358065082682249178",
        "name": "Sicilian: Sozin, 6...Bd7 7.O-O"
    },
    "B57d": {
        "eco": "B57d",
        "fen": "r1b1kb1r/pp2pppp/1qnp1n2/8/2BNP3/2N5/PPP2PPP/R1BQK2R w KQkq - 5 7",
        "hash": "15344967214281642529",
        "name": "Sicilian: Sozin, Benko Variation"
    },
    "B57e": {
        "eco": "B57e",
        "fen": "r1b1kb1r/pp2pppp/1qnp1n2/8/2B1P3/2N5/PPP1NPPP/R1BQK2R b KQkq - 6 7",
        "hash": "7301420578400896557",
        "name": "Sicilian: Sozin, Benko, 7.Nde2"
    },
    "B57f": {
        "eco": "B57f",
        "fen": "r1b1kb1r/pp2pppp/1qnp1n2/1N6/2B1P3/2N5/PPP2PPP/R1BQK2R b KQkq - 6 7",
        "hash": "2422562818601904247",
        "name": "Sicilian: Sozin, Benko, 7.Ndb5"
    },
    "B57g": {
        "eco": "B57g",
        "fen": "r1b1kb1r/pp2pppp/1qNp1n2/8/2B1P3/2N5/PPP2PPP/R1BQK2R b KQkq - 0 7",
        "hash": "10986243485988936468",
        "name": "Sicilian: Sozin, Benko, 7.Nxc6"
    },
    "B57h": {
        "eco": "B57h",
        "fen": "r1b1kb1r/p3pp1p/1qpp1np1/8/2B1P3/2N5/PPP2PPP/R1BQ1RK1 w kq - 0 9",
        "hash": "15141394445976918468",
        "name": "Sicilian: Sozin, Benko, 7.Nxc6 bxc6 8.O-O g6"
    },
    "B57i": {
        "eco": "B57i",
        "fen": "r1b1kb1r/pp2pppp/1qnp1n2/8/2B1P3/1NN5/PPP2PPP/R1BQK2R b KQkq - 6 7",
        "hash": "4649261056425858283",
        "name": "Sicilian: Sozin, Benko, 7.Nb3"
    },
    "B57j": {
        "eco": "B57j",
        "fen": "r1b1kb1r/pp3ppp/1qnppn2/8/2B1P3/1NN5/PPP2PPP/R1BQK2R w KQkq - 0 8",
        "hash": "3959381492260439225",
        "name": "Sicilian: Sozin, Benko, 7.Nb3 e6"
    },
    "B57k": {
        "eco": "B57k",
        "fen": "r1b1kb1r/pp3ppp/1qnppn2/8/2B1P3/1NN1B3/PPP2PPP/R2QK2R b KQkq - 1 8",
        "hash": "5042403832215805751",
        "name": "Sicilian: Sozin, Benko, 7.Nb3 e6 8.Be3"
    },
    "B57l": {
        "eco": "B57l",
        "fen": "r1b1kb1r/pp3ppp/1qnppn2/8/2B1PB2/1NN5/PPP2PPP/R2QK2R b KQkq - 1 8",
        "hash": "17124492267060489946",
        "name": "Sicilian: Sozin, Benko, 7.Nb3 e6 8.Bf4"
    },
    "B57m": {
        "eco": "B57m",
        "fen": "r1b1kb1r/pp3ppp/1qnppn2/8/2B1P3/1NN5/PPP2PPP/R1BQ1RK1 b kq - 1 8",
        "hash": "5226417786238230441",
        "name": "Sicilian: Sozin, Benko, 7.Nb3 e6 8.O-O"
    },
    "B57n": {
        "eco": "B57n",
        "fen": "r1b1k2r/pp2bppp/1qnppn2/8/2B1P3/1NN5/PPP2PPP/R1BQ1RK1 w kq - 2 9",
        "hash": "6650555127103550264",
        "name": "Sicilian: Sozin, Benko, 7.Nb3 e6 8.O-O Be7"
    },
    "B57o": {
        "eco": "B57o",
        "fen": "r1b1k2r/pp2bppp/1qnppn2/8/2B1P3/1NN1B3/PPP2PPP/R2Q1RK1 b kq - 3 9",
        "hash": "3405635332011649206",
        "name": "Sicilian: Sozin, Benko, 7.Nb3 e6 8.O-O Be7 9.Be3"
    },
    "B58a": {
        "eco": "B58a",
        "fen": "r1bqkb1r/pp2pppp/2np1n2/8/3NP3/2N5/PPP1BPPP/R1BQK2R b KQkq - 4 6",
        "hash": "232093606237214974",
        "name": "Sicilian: Boleslavsky Variation"
    },
    "B58b": {
        "eco": "B58b",
        "fen": "r2qkb1r/pp1bpppp/2np1n2/8/3NP3/2N5/PPP1BPPP/R1BQK2R w KQkq - 5 7",
        "hash": "16283170951551666383",
        "name": "Sicilian: Boleslavsky, 6...Bd7"
    },
    "B58c": {
        "eco": "B58c",
        "fen": "r1bqkb1r/1p2pppp/p1np1n2/8/3NP3/2N5/PPP1BPPP/R1BQK2R w KQkq - 0 7",
        "hash": "15118441100035514402",
        "name": "Sicilian: Boleslavsky, 6...a6"
    },
    "B58d": {
        "eco": "B58d",
        "fen": "r1bqkb1r/pp2pppp/3p1n2/8/3nP3/2N5/PPP1BPPP/R1BQK2R w KQkq - 0 7",
        "hash": "12563647000804434365",
        "name": "Sicilian: Boleslavsky, 6...Nxd4"
    },
    "B58e": {
        "eco": "B58e",
        "fen": "r1bqkb1r/pp3ppp/2np1n2/4p3/3NP3/2N5/PPP1BPPP/R1BQK2R w KQkq e6 0 7",
        "hash": "9890053959501832392",
        "name": "Sicilian: Boleslavsky, 6...e5"
    },
    "B58f": {
        "eco": "B58f",
        "fen": "r1bqkb1r/pp3ppp/2np1n2/1N2p3/4P3/2N5/PPP1BPPP/R1BQK2R b KQkq - 1 7",
        "hash": "8947084281799072414",
        "name": "Sicilian: Boleslavsky, 7.Ndb5"
    },
    "B58g": {
        "eco": "B58g",
        "fen": "r1bqkb1r/pp3ppp/2Np1n2/4p3/4P3/2N5/PPP1BPPP/R1BQK2R b KQkq - 0 7",
        "hash": "14250018083108907517",
        "name": "Sicilian: Boleslavsky, Louma Variation"
    },
    "B58h": {
        "eco": "B58h",
        "fen": "r1bqkb1r/pp3ppp/2np1n2/4p3/4P3/2N2N2/PPP1BPPP/R1BQK2R b KQkq - 1 7",
        "hash": "17809235832735127559",
        "name": "Sicilian: Boleslavsky, 7.Nf3"
    },
    "B58i": {
        "eco": "B58i",
        "fen": "r1bqkb1r/pp3pp1/2np1n1p/4p3/4P3/2N2N2/PPP1BPPP/R1BQK2R w KQkq - 0 8",
        "hash": "7336459207773884690",
        "name": "Sicilian: Boleslavsky, 7.Nf3 h6"
    },
    "B58j": {
        "eco": "B58j",
        "fen": "r1bqkb1r/pp3pp1/2np1n1p/4p3/4P3/2N2N2/PPP1BPPP/R1BQ1RK1 b kq - 1 8",
        "hash": "1992048931889105410",
        "name": "Sicilian: Boleslavsky, 7.Nf3 h6 8.O-O"
    },
    "B58k": {
        "eco": "B58k",
        "fen": "r1bqk2r/pp2bpp1/2np1n1p/4p3/4P3/2N2N2/PPP1BPPP/R1BQ1RK1 w kq - 2 9",
        "hash": "1110522260878911123",
        "name": "Sicilian: Boleslavsky, 7.Nf3 h6 8.O-O Be7"
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    "B58l": {
        "eco": "B58l",
        "fen": "r1bqk2r/pp2bpp1/2np1n1p/4p3/4P3/2N2N1P/PPP1BPP1/R1BQ1RK1 b kq - 0 9",
        "hash": "16688796101124960097",
        "name": "Sicilian: Boleslavsky, 7.Nf3 h6 8.O-O Be7 9.h3"
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    "B58m": {
        "eco": "B58m",
        "fen": "r1bqk2r/pp2bpp1/2np1n1p/4p3/4P3/2N2N2/PPP1BPPP/R1BQR1K1 b kq - 3 9",
        "hash": "10078300151894592903",
        "name": "Sicilian: Boleslavsky, 7.Nf3 h6 8.O-O Be7 9.Re1"
    },
    "B58n": {
        "eco": "B58n",
        "fen": "r1bq1rk1/pp2bpp1/2np1n1p/4p3/4P3/2N2N1P/PPP1BPP1/R1BQR1K1 b - - 0 10",
        "hash": "7603871254101847454",
        "name": "Sicilian: Boleslavsky, 7.Nf3, 9.Re1 O-O 10.h3"
    },
    "B58o": {
        "eco": "B58o",
        "fen": "r1bq1rk1/1p2bpp1/p1np1n1p/4p3/4P3/2N2N1P/PPP1BPP1/R1BQR1K1 w - - 0 11",
        "hash": "13506736657980429634",
        "name": "Sicilian: Boleslavsky, 7.Nf3, 9.Re1 O-O 10.h3 a6"
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    "B58p": {
        "eco": "B58p",
        "fen": "r2q1rk1/pp2bpp1/2npbn1p/4p3/4P3/2N2N1P/PPP1BPP1/R1BQR1K1 w - - 1 11",
        "hash": "4413231084817225366",
        "name": "Sicilian: Boleslavsky, 7.Nf3, 9.Re1 O-O 10.h3 Be6"
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    "B58q": {
        "eco": "B58q",
        "fen": "r4rk1/pp2bpp1/2npbn1p/q3p3/4P3/2N2N1P/PPP2PP1/R1BQRBK1 w - - 3 12",
        "hash": "10938650758163824058",
        "name": "Sicilian: Boleslavsky, 7.Nf3, 9.Re1 O-O 10.h3 Be6 11.Bf1 Qa5"
    },
    "B58r": {
        "eco": "B58r",
        "fen": "rn1q1rk1/pp2bpp1/3pbn1p/4p3/4P3/2N2N1P/PPP2PP1/R1BQRBK1 w - - 3 12",
        "hash": "16524737623152589110",
        "name": "Sicilian: Boleslavsky, 7.Nf3, 9.Re1 O-O 10.h3 Be6 11.Bf1 Nb8"
    },
    "B58s": {
        "eco": "B58s",
        "fen": "rn1q1rk1/pp2bpp1/3pbn1p/4p3/P3P3/2N2N1P/1PP2PP1/R1BQRBK1 b - a3 0 12",
        "hash": "10275762708411919608",
        "name": "Sicilian: Boleslavsky, 7.Nf3, 9.Re1 O-O 10.h3 Be6 11.Bf1 Nb8 12.a4"
    },
    "B58t": {
        "eco": "B58t",
        "fen": "rn1q1rk1/pp2bpp1/3pbn1p/4p3/4P3/1PN2N1P/P1P2PP1/R1BQRBK1 b - - 0 12",
        "hash": "7635229770212938331",
        "name": "Sicilian: Boleslavsky, 7.Nf3, 9.Re1 O-O 10.h3 Be6 11.Bf1 Nb8 12.b3"
    },
    "B58u": {
        "eco": "B58u",
        "fen": "rn1q1rk1/1p2bpp1/p2pbn1p/4p3/4P3/1PN2N1P/P1P2PP1/R1BQRBK1 w - - 0 13",
        "hash": "13475395665318603399",
        "name": "Sicilian: Boleslavsky, 7.Nf3, 9.Re1 O-O 10.h3 Be6 11.Bf1 Nb8 12.b3 a6"
    },
    "B59a": {
        "eco": "B59a",
        "fen": "r1bqkb1r/pp3ppp/2np1n2/4p3/4P3/1NN5/PPP1BPPP/R1BQK2R b KQkq - 1 7",
        "hash": "2103673058385110530",
        "name": "Sicilian: Boleslavsky, 7.Nb3"
    },
    "B59b": {
        "eco": "B59b",
        "fen": "r2qkb1r/pp3ppp/2npbn2/4p3/4P3/1NN5/PPP1BPPP/R1BQK2R w KQkq - 2 8",
        "hash": "5298816277260786954",
        "name": "Sicilian: Boleslavsky, 7.Nb3 Be6"
    },
    "B59c": {
        "eco": "B59c",
        "fen": "r1bqk2r/pp2bppp/2np1n2/4p3/4P3/1NN5/PPP1BPPP/R1BQK2R w KQkq - 2 8",
        "hash": "719956296625883795",
        "name": "Sicilian: Boleslavsky, 7.Nb3 Be7"
    },
    "B59d": {
        "eco": "B59d",
        "fen": "r1bqk2r/pp2bppp/2np1n2/4p1B1/4P3/1NN5/PPP1BPPP/R2QK2R b KQkq - 3 8",
        "hash": "14963099094635762011",
        "name": "Sicilian: Boleslavsky, 7.Nb3 Be7 8.Bg5"
    },
    "B59e": {
        "eco": "B59e",
        "fen": "r1bqk2r/pp2bppp/2np1n2/4p3/4P3/1NN1B3/PPP1BPPP/R2QK2R b KQkq - 3 8",
        "hash": "8860119248375845149",
        "name": "Sicilian: Boleslavsky, 7.Nb3 Be7 8.Be3"
    },
    "B59f": {
        "eco": "B59f",
        "fen": "r1bqk2r/pp2bppp/2np1n2/4p3/4P3/1NN5/PPP1BPPP/R1BQ1RK1 b kq - 3 8",
        "hash": "8613335891211112835",
        "name": "Sicilian: Boleslavsky, 7.Nb3 Be7 8.O-O"
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    "B59g": {
        "eco": "B59g",
        "fen": "r1bq1rk1/pp2bppp/2np1n2/4p3/4P3/1NN5/PPP1BPPP/R1BQ1RK1 w - - 4 9",
        "hash": "9016306425191413864",
        "name": "Sicilian: Boleslavsky, 7.Nb3 Be7 8.O-O O-O"
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    "B59h": {
        "eco": "B59h",
        "fen": "r1bq1rk1/pp2bppp/2np1n2/4p1B1/4P3/1NN5/PPP1BPPP/R2Q1RK1 b - - 5 9",
        "hash": "13509125266149073824",
        "name": "Sicilian: Boleslavsky, 7.Nb3 Be7 8.O-O O-O 9.Bg5"
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    "B59i": {
        "eco": "B59i",
        "fen": "r1bq1rk1/pp2bppp/2np1n2/4p3/4P3/1NN5/PPP1BPPP/R1BQ1R1K b - - 5 9",
        "hash": "5515617921159502375",
        "name": "Sicilian: Boleslavsky, 7.Nb3 Be7 8.O-O O-O 9.Kh1"
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    "B59j": {
        "eco": "B59j",
        "fen": "r1bq1rk1/pp2bppp/2np1n2/4p3/4PP2/1NN5/PPP1B1PP/R1BQ1RK1 b - f3 0 9",
        "hash": "9238615534026229217",
        "name": "Sicilian: Boleslavsky, 7.Nb3 Be7 8.O-O O-O 9.f4"
    },
    "B59k": {
        "eco": "B59k",
        "fen": "r1bq1rk1/pp2bppp/2np1n2/4p3/4P3/1NN1B3/PPP1BPPP/R2Q1RK1 b - - 5 9",
        "hash": "1020312709383660518",
        "name": "Sicilian: Boleslavsky, 7.Nb3 Be7 8.O-O O-O 9.Be3"
    },
    "B59l": {
        "eco": "B59l",
        "fen": "r2q1rk1/pp2bppp/2npbn2/4p3/4P3/1NN1B3/PPP1BPPP/R2Q1RK1 w - - 6 10",
        "hash": "6525843216880916718",
        "name": "Sicilian: Boleslavsky, 7.Nb3 Be7 8.O-O O-O 9.Be3 Be6"
    },
    "B59m": {
        "eco": "B59m",
        "fen": "r2q1rk1/pp2bppp/2npbn2/4p3/4P3/1NN1BB2/PPP2PPP/R2Q1RK1 b - - 7 10",
        "hash": "12084960559315055788",
        "name": "Sicilian: Boleslavsky, 7.Nb3 Be7 8.O-O O-O 9.Be3 Be6 10.Bf3"
    },
    "B59n": {
        "eco": "B59n",
        "fen": "r1bq1rk1/1p2bppp/2np1n2/p3p3/4P3/1NN1B3/PPP1BPPP/R2Q1RK1 w - a6 0 10",
        "hash": "9813999729006948214",
        "name": "Sicilian: Boleslavsky, 7.Nb3 Be7 8.O-O O-O 9.Be3 a5"
    },
    "B59o": {
        "eco": "B59o",
        "fen": "r1bq1rk1/1p2bppp/2np1n2/p3p3/P3P3/1NN1B3/1PP1BPPP/R2Q1RK1 b - a3 0 10",
        "hash": "16427770442094148280",
        "name": "Sicilian: Boleslavsky, 7.Nb3 Be7 8.O-O O-O 9.Be3 a5 10.a4"
    },
    "B60a": {
        "eco": "B60a",
        "fen": "r1bqkb1r/pp2pppp/2np1n2/6B1/3NP3/2N5/PPP2PPP/R2QKB1R b KQkq - 4 6",
        "hash": "13178195687193905557",
        "name": "Sicilian: Richter-Rauzer"
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    "B60b": {
        "eco": "B60b",
        "fen": "r1bqkb1r/pp2pp1p/2np1np1/6B1/3NP3/2N5/PPP2PPP/R2QKB1R w KQkq - 0 7",
        "hash": "6869687573498338270",
        "name": "Sicilian: Richter-Rauzer, Bondarevsky Variation"
    },
    "B60c": {
        "eco": "B60c",
        "fen": "r1b1kb1r/pp2pppp/2np1n2/q5B1/3NP3/2N5/PPP2PPP/R2QKB1R w KQkq - 5 7",
        "hash": "8039433805879388186",
        "name": "Sicilian: Richter-Rauzer, 6...Qa5"
    },
    "B60d": {
        "eco": "B60d",
        "fen": "r1b1kb1r/pp2pppp/1qnp1n2/6B1/3NP3/2N5/PPP2PPP/R2QKB1R w KQkq - 5 7",
        "hash": "8150852868737130319",
        "name": "Sicilian: Richter-Rauzer, 6...Qb6"
    },
    "B60e": {
        "eco": "B60e",
        "fen": "r1bqkb1r/1p2pppp/p1np1n2/6B1/3NP3/2N5/PPP2PPP/R2QKB1R w KQkq - 0 7",
        "hash": "7211858239852900681",
        "name": "Sicilian: Richter-Rauzer, 6...a6"
    },
    "B60f": {
        "eco": "B60f",
        "fen": "r2qkb1r/pp1bpppp/2np1n2/6B1/3NP3/2N5/PPP2PPP/R2QKB1R w KQkq - 5 7",
        "hash": "6062871470292195748",
        "name": "Sicilian: Richter-Rauzer, Larsen Variation"
    },
    "B60g": {
        "eco": "B60g",
        "fen": "r2qkb1r/pp1bpppp/2np1n2/6B1/4P3/1NN5/PPP2PPP/R2QKB1R b KQkq - 6 7",
        "hash": "13858312003590430574",
        "name": "Sicilian: Richter-Rauzer, Larsen, 7.Nb3"
    },
    "B60h": {
        "eco": "B60h",
        "fen": "r2qkb1r/pp1bpppp/2np1B2/8/3NP3/2N5/PPP2PPP/R2QKB1R b KQkq - 0 7",
        "hash": "17373951313104308036",
        "name": "Sicilian: Richter-Rauzer, Larsen, 7.Bxf6"
    },
    "B60i": {
        "eco": "B60i",
        "fen": "r2qkb1r/pp1bpppp/2np1n2/6B1/3NP3/2N5/PPP1BPPP/R2QK2R b KQkq - 6 7",
        "hash": "2856168936267354887",
        "name": "Sicilian: Richter-Rauzer, Larsen, 7.Be2"
    },
    "B60j": {
        "eco": "B60j",
        "fen": "r2qkb1r/1p1bpppp/p1np1n2/6B1/3NP3/2N5/PPP1BPPP/R2QK2R w KQkq - 0 8",
        "hash": "17677991314305084379",
        "name": "Sicilian: Richter-Rauzer, Larsen, 7.Be2 a6"
    },
    "B60k": {
        "eco": "B60k",
        "fen": "r3kb1r/pp1bpppp/2np1n2/q5B1/3NP3/2N5/PPP1BPPP/R2QK2R w KQkq - 7 8",
        "hash": "18361373423127147144",
        "name": "Sicilian: Richter-Rauzer, Larsen, 7.Be2 Qa5"
    },
    "B61a": {
        "eco": "B61a",
        "fen": "r2qkb1r/pp1bpppp/2np1n2/6B1/3NP3/2N5/PPPQ1PPP/R3KB1R b KQkq - 6 7",
        "hash": "8952007022587676164",
        "name": "Sicilian: Richter-Rauzer, Larsen, 7.Qd2"
    },
    "B61b": {
        "eco": "B61b",
        "fen": "r2qkb1r/1p1bpppp/p1np1n2/6B1/3NP3/2N5/PPPQ1PPP/R3KB1R w KQkq - 0 8",
        "hash": "12595471974576488152",
        "name": "Sicilian: Richter-Rauzer, Larsen, 7.Qd2 a6"
    },
    "B61c": {
        "eco": "B61c",
        "fen": "r2qkb1r/pp1bpppp/3p1n2/6B1/3nP3/2N5/PPPQ1PPP/R3KB1R w KQkq - 0 8",
        "hash": "15084929493671165767",
        "name": "Sicilian: Richter-Rauzer, Larsen, 7.Qd2 Nxd4"
    },
    "B61d": {
        "eco": "B61d",
        "fen": "2rqkb1r/pp1bpppp/2np1n2/6B1/3NP3/2N5/PPPQ1PPP/R3KB1R w KQk - 7 8",
        "hash": "8398031677866221750",
        "name": "Sicilian: Richter-Rauzer, Larsen, 7.Qd2 Rc8"
    },
    "B61e": {
        "eco": "B61e",
        "fen": "2rqkb1r/pp1bpppp/2np1n2/6B1/3NPP2/2N5/PPPQ2PP/R3KB1R b KQk f3 0 8",
        "hash": "9916275871811935551",
        "name": "Sicilian: Richter-Rauzer, Larsen, 7.Qd2 Rc8 8.f4"
    },
    "B61f": {
        "eco": "B61f",
        "fen": "2rqkb1r/pp1bpppp/2np1n2/6B1/3NP3/2N5/PPPQ1PPP/2KR1B1R b k - 8 8",
        "hash": "5523252023347359534",
        "name": "Sicilian: Richter-Rauzer, Larsen, 7.Qd2 Rc8 8.O-O-O"
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    "B61g": {
        "eco": "B61g",
        "fen": "2r1kb1r/pp1bpppp/3p1n2/q5B1/3QP3/2N5/PPP2PPP/2KR1B1R w k - 1 10",
        "hash": "1727555487381029699",
        "name": "Sicilian: Richter-Rauzer, Larsen, Main Line"
    },
    "B61h": {
        "eco": "B61h",
        "fen": "2r1kb1r/pp1bpppp/3p1n2/q7/3QP3/2N5/PPPB1PPP/2KR1B1R b k - 2 10",
        "hash": "69992408922961542",
        "name": "Sicilian: Richter-Rauzer, Larsen, Main Line, 10.Bd2"
    },
    "B61i": {
        "eco": "B61i",
        "fen": "2r1kb1r/pp1bpppp/3p1n2/q5B1/3QPP2/2N5/PPP3PP/2KR1B1R b k f3 0 10",
        "hash": "16929030574261059274",
        "name": "Sicilian: Richter-Rauzer, Larsen, Main Line, 10.f4"
    },
    "B62a": {
        "eco": "B62a",
        "fen": "r1bqkb1r/pp3ppp/2nppn2/6B1/3NP3/2N5/PPP2PPP/R2QKB1R w KQkq - 0 7",
        "hash": "13877183751985142215",
        "name": "Sicilian: Richter-Rauzer, 6...e6"
    },
    "B62b": {
        "eco": "B62b",
        "fen": "r1bqkb1r/pp3ppp/2nppn2/6B1/3NP3/2N5/PPP1BPPP/R2QK2R b KQkq - 1 7",
        "hash": "12904267449175692132",
        "name": "Sicilian: Richter-Rauzer, 6...e6 7.Be2"
    },
    "B62c": {
        "eco": "B62c",
        "fen": "r1bqk2r/pp2bppp/2nppn2/6B1/3NP3/2N5/PPP1BPPP/R2QK2R w KQkq - 2 8",
        "hash": "12094796198870482933",
        "name": "Sicilian: Richter-Rauzer, 6...e6 7.Be2 Be7"
    },
    "B62d": {
        "eco": "B62d",
        "fen": "r1bqkb1r/pp3ppp/2nppn2/6B1/4P3/1NN5/PPP2PPP/R2QKB1R b KQkq - 1 7",
        "hash": "6117173846449741581",
        "name": "Sicilian: Richter-Rauzer, Podebrady Variation"
    },
    "B62e": {
        "eco": "B62e",
        "fen": "r1bqkb1r/pp3ppp/2Nppn2/6B1/4P3/2N5/PPP2PPP/R2QKB1R b KQkq - 0 7",
        "hash": "10094560481859703026",
        "name": "Sicilian: Richter-Rauzer, Richter Attack"
    },
    "B62f": {
        "eco": "B62f",
        "fen": "r1bqkb1r/pp3ppp/2nppn2/6B1/3NP3/2NQ4/PPP2PPP/R3KB1R b KQkq - 1 7",
        "hash": "6985652387556296880",
        "name": "Sicilian: Richter-Rauzer, Keres Variation"
    },
    "B62g": {
        "eco": "B62g",
        "fen": "r1bqkb1r/pp3ppp/2nppn2/1B4B1/3NP3/2N5/PPP2PPP/R2QK2R b KQkq - 1 7",
        "hash": "17531238699536288324",
        "name": "Sicilian: Richter-Rauzer, Margate (Alekhine) Variation"
    },
    "B62h": {
        "eco": "B62h",
        "fen": "r2qkb1r/pp1b1ppp/2nppn2/1B4B1/3NP3/2N5/PPP2PPP/R2QK2R w KQkq - 2 8",
        "hash": "1263970962130066037",
        "name": "Sicilian: Richter-Rauzer, Margate, 7...Bd7"
    },
    "B62i": {
        "eco": "B62i",
        "fen": "r2qkb1r/pp1b1ppp/2Bppn2/6B1/3NP3/2N5/PPP2PPP/R2QK2R b KQkq - 0 8",
        "hash": "4658336106536569422",
        "name": "Sicilian: Richter-Rauzer, Margate, 7...Bd7 8.Bxc6"
    },
    "B63a": {
        "eco": "B63a",
        "fen": "r1bqkb1r/pp3ppp/2nppn2/6B1/3NP3/2N5/PPPQ1PPP/R3KB1R b KQkq - 1 7",
        "hash": "16757303323964229223",
        "name": "Sicilian: Richter-Rauzer, Rauzer Attack (7.Qd2)"
    },
    "B63b": {
        "eco": "B63b",
        "fen": "r1bqkb1r/pp3ppp/3ppn2/6B1/3nP3/2N5/PPPQ1PPP/R3KB1R w KQkq - 0 8",
        "hash": "5039073956639637284",
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        "hash": "14899101558024965253",
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        "hash": "6536136758799354447",
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        "hash": "9818678639258710675",
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        "hash": "11334148039361174677",
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        "hash": "3966435633848507489",
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        "hash": "9698340723238840529",
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        "hash": "452794159029967756",
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        "hash": "15418340216825394965",
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        "hash": "6177533930934880415",
        "name": "Sicilian: Richter-Rauzer, 7...a6, 9.f4 h6 10.Bh4 g5"
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    "B67k": {
        "eco": "B67k",
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        "hash": "9044559612924715430",
        "name": "Sicilian: Richter-Rauzer, 7...a6, 9.f4 b5"
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    "B67l": {
        "eco": "B67l",
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        "hash": "3532519012010092691",
        "name": "Sicilian: Richter-Rauzer, 7...a6, 9.f4 b5 10.Nxc6"
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    "B67m": {
        "eco": "B67m",
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        "hash": "15617272798939365190",
        "name": "Sicilian: Richter-Rauzer, 7...a6, 9.f4 b5 10.Bxf6"
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    "B67n": {
        "eco": "B67n",
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        "hash": "6802574694011563852",
        "name": "Sicilian: Richter-Rauzer, 7...a6, 9.f4 b5 10.Bxf6 gxf6 11.f5"
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    "B67o": {
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        "hash": "8747565269552322458",
        "name": "Sicilian: Richter-Rauzer, 7...a6, 9.f4 b5 10.Bxf6 gxf6 11.Nxc6"
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    "B67p": {
        "eco": "B67p",
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        "hash": "5772542364342231512",
        "name": "Sicilian: Richter-Rauzer, 7...a6, 9.f4 b5 10.Bxf6 gxf6 11.Nxc6 Bxc6 12.Qe1"
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        "eco": "B67q",
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        "hash": "13804581865493888882",
        "name": "Sicilian: Richter-Rauzer, 7...a6, 9.f4 b5 10.Bxf6 gxf6 11.Kb1"
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    "B67r": {
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        "hash": "8677385653094459816",
        "name": "Sicilian: Richter-Rauzer, 7...a6, 9.f4 b5 10.Bxf6 gxf6 11.Kb1 Qb6"
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    "B67s": {
        "eco": "B67s",
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        "hash": "3814258723385254045",
        "name": "Sicilian: Richter-Rauzer, 7...a6, 9.f4 b5 10.Bxf6 gxf6 11.Kb1 Qb6 12.Nxc6"
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        "eco": "B68",
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        "hash": "670089623883411466",
        "name": "Sicilian: Richter-Rauzer, 7...a6, 9.f4 Be7"
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        "eco": "B69",
        "fen": "r2qk2r/3bbppp/p1nppB2/1p6/4PP2/2N2N2/PPPQ2PP/2KR1B1R b kq - 0 11",
        "hash": "12830855664206457624",
        "name": "Sicilian: Richter-Rauzer, 7...a6, 9.f4 Be7 10.Nf3 b5 11.Bxf6"
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    "B70a": {
        "eco": "B70a",
        "fen": "rnbqkb1r/pp2pp1p/3p1np1/8/3NP3/2N5/PPP2PPP/R1BQKB1R w KQkq - 0 6",
        "hash": "3666360726497518869",
        "name": "Sicilian: Dragon"
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        "eco": "B70b",
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        "hash": "2163765105345707309",
        "name": "Sicilian: Dragon, 6.g3"
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        "eco": "B70c",
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        "hash": "13108540371784538158",
        "name": "Sicilian: Dragon, 6.g3 Nc6"
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        "eco": "B70d",
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        "hash": "310037203436719138",
        "name": "Sicilian: Dragon, 6.g3 Nc6 7.Nde2"
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        "eco": "B70e",
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        "hash": "17634918088729771741",
        "name": "Sicilian: Dragon, 6.Bg5"
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        "eco": "B70f",
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        "hash": "5859802758614365107",
        "name": "Sicilian: Dragon, 6.Bc4"
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        "eco": "B70g",
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        "hash": "656913700677235179",
        "name": "Sicilian: Dragon, 6.Bc4 Bg7 7.h3"
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    "B70h": {
        "eco": "B70h",
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        "hash": "11500914774240404233",
        "name": "Sicilian: Dragon, 6.Bc4 Bg7 7.O-O"
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    "B70i": {
        "eco": "B70i",
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        "hash": "4711051490477125558",
        "name": "Sicilian: Dragon, 6.Be2"
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    "B70j": {
        "eco": "B70j",
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        "hash": "10634957694388557674",
        "name": "Sicilian: Dragon, 6.Be2 a6"
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        "eco": "B70k",
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        "hash": "17428149802313540636",
        "name": "Sicilian: Dragon, 6.Be2 Bg7"
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        "eco": "B70l",
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        "hash": "10351597257643704076",
        "name": "Sicilian: Dragon, 6.Be2 Bg7 7.O-O"
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        "eco": "B70m",
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        "hash": "12696951453416479941",
        "name": "Sicilian: Dragon, 6.Be2 Bg7 7.O-O Nc6 8.Nb3"
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    "B70n": {
        "eco": "B70n",
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        "hash": "13446710155397641518",
        "name": "Sicilian: Dragon, 6.Be2 Bg7 7.O-O Nc6 8.Nb3 O-O"
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    "B70o": {
        "eco": "B70o",
        "fen": "rnbq1rk1/pp2ppbp/3p1np1/8/3NP3/2N5/PPP1BPPP/R1BQ1RK1 w - - 4 8",
        "hash": "9583852883331995367",
        "name": "Sicilian: Dragon, 6.Be2 Bg7 7.O-O O-O"
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    "B70p": {
        "eco": "B70p",
        "fen": "rnbq1rk1/pp2ppbp/3p1np1/8/3NP3/2N5/PPP1BPPP/R1BQR1K1 b - - 5 8",
        "hash": "122901073377885683",
        "name": "Sicilian: Dragon, 6.Be2 Bg7 7.O-O O-O 8.Re1"
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        "eco": "B70q",
        "fen": "r1bq1rk1/pp2ppbp/2np1np1/8/4P3/1NN5/PPP1BPPP/R1BQR1K1 b - - 7 9",
        "hash": "4478901499635015226",
        "name": "Sicilian: Dragon, 6.Be2 Bg7 7.O-O O-O 8.Re1 Nc6 9.Nb3"
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    "B70r": {
        "eco": "B70r",
        "fen": "r2q1rk1/pp2ppbp/2npbnp1/8/4P3/1NN5/PPP1BPPP/R1BQR1K1 w - - 8 10",
        "hash": "7678870440948852018",
        "name": "Sicilian: Dragon, 6.Be2 Bg7 7.O-O O-O 8.Re1 Nc6 9.Nb3 Be6"
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    "B70s": {
        "eco": "B70s",
        "fen": "rnbq1rk1/pp2ppbp/3p1np1/6B1/3NP3/2N5/PPP1BPPP/R2Q1RK1 b - - 5 8",
        "hash": "4853464627600788783",
        "name": "Sicilian: Dragon, 6.Be2 Bg7 7.O-O O-O 8.Bg5"
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    "B70t": {
        "eco": "B70t",
        "fen": "r1bq1rk1/pp2ppbp/2np1np1/6B1/4P3/1NN5/PPP1BPPP/R2Q1RK1 b - - 7 9",
        "hash": "8990900722284883686",
        "name": "Sicilian: Dragon, 6.Be2 Bg7 7.O-O O-O 8.Bg5 Nc6 9.Nb3"
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    "B70u": {
        "eco": "B70u",
        "fen": "r1bq1rk1/1p2ppbp/p1np1np1/6B1/4P3/1NN5/PPP1BPPP/R2Q1RK1 w - - 0 10",
        "hash": "12552070242864928314",
        "name": "Sicilian: Dragon, 6.Be2 Bg7 7.O-O O-O 8.Bg5 Nc6 9.Nb3 a6"
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    "B70v": {
        "eco": "B70v",
        "fen": "r2q1rk1/pp2ppbp/2npbnp1/6B1/4P3/1NN5/PPP1BPPP/R2Q1RK1 w - - 8 10",
        "hash": "2917921643884090862",
        "name": "Sicilian: Dragon, 6.Be2 Bg7 7.O-O O-O 8.Bg5 Nc6 9.Nb3 Be6"
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    "B70w": {
        "eco": "B70w",
        "fen": "r2q1rk1/pp2ppbp/2npbnp1/6B1/4P3/1NN5/PPP1BPPP/R2Q1R1K b - - 9 10",
        "hash": "1861598446847539105",
        "name": "Sicilian: Dragon, 6.Be2 Bg7 7.O-O O-O 8.Bg5 Nc6 9.Nb3 Be6 10.Kh1"
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    "B71": {
        "eco": "B71",
        "fen": "rnbqkb1r/pp2pp1p/3p1np1/8/3NPP2/2N5/PPP3PP/R1BQKB1R b KQkq f3 0 6",
        "hash": "14985721896518211740",
        "name": "Sicilian: Dragon, Levenfish Variation"
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    "B72": {
        "eco": "B72",
        "fen": "rnbqkb1r/pp2pp1p/3p1np1/8/3NP3/2N1B3/PPP2PPP/R2QKB1R b KQkq - 1 6",
        "hash": "4749393576208236187",
        "name": "Sicilian: Dragon, 6.Be3"
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    "B73": {
        "eco": "B73",
        "fen": "r1bqk2r/pp2ppbp/2np1np1/8/3NP3/2N1B3/PPP1BPPP/R2Q1RK1 b kq - 5 8",
        "hash": "6290721443678847361",
        "name": "Sicilian: Dragon, Classical, 8.O-O"
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    "B74": {
        "eco": "B74",
        "fen": "r1bq1rk1/pp2ppbp/2np1np1/8/4P3/1NN1B3/PPP1BPPP/R2Q1RK1 b - - 7 9",
        "hash": "14525503288304414368",
        "name": "Sicilian: Dragon, Classical, 9.Nb3"
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    "B75": {
        "eco": "B75",
        "fen": "rnbqk2r/pp2ppbp/3p1np1/8/3NP3/2N1BP2/PPP3PP/R2QKB1R b KQkq - 0 7",
        "hash": "11521588610279463488",
        "name": "Sicilian: Dragon, Yugoslav Attack"
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    "B76a": {
        "eco": "B76a",
        "fen": "rnbq1rk1/pp2ppbp/3p1np1/8/3NP3/2N1BP2/PPP3PP/R2QKB1R w KQ - 1 8",
        "hash": "10757985137015468971",
        "name": "Sicilian: Dragon, Yugoslav, 7.f3 O-O"
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    "B76b": {
        "eco": "B76b",
        "fen": "rnbq1rk1/pp2ppbp/3p1np1/8/3NP3/2N1BP2/PPPQ2PP/R3KB1R b KQ - 2 8",
        "hash": "13642606086006828043",
        "name": "Sicilian: Dragon, Yugoslav, 7.f3 O-O 8.Qd2"
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    "B76c": {
        "eco": "B76c",
        "fen": "r1bq1rk1/pp2ppbp/2np1np1/8/3NP3/2N1BP2/PPPQ2PP/R3KB1R w KQ - 3 9",
        "hash": "1637512657585391880",
        "name": "Sicilian: Dragon, Yugoslav, 8.Qd2 Nc6"
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    "B76d": {
        "eco": "B76d",
        "fen": "r1bq1rk1/pp2ppbp/2np1np1/8/3NP1P1/2N1BP2/PPPQ3P/R3KB1R b KQ g3 0 9",
        "hash": "13111276767503492117",
        "name": "Sicilian: Dragon, Yugoslav, 9.g4"
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        "eco": "B76e",
        "fen": "r2q1rk1/pp2ppbp/2npbnp1/8/3NP1P1/2N1BP2/PPPQ3P/R3KB1R w KQ - 1 10",
        "hash": "16234366238750793501",
        "name": "Sicilian: Dragon, Yugoslav, 9.g4 Be6"
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        "eco": "B76f",
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        "hash": "1771912769160977750",
        "name": "Sicilian: Dragon, Yugoslav, 9.g4 Nxd4"
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    "B76g": {
        "eco": "B76g",
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        "hash": "3356545346015020688",
        "name": "Sicilian: Dragon, Yugoslav, 9.O-O-O"
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    "B76h": {
        "eco": "B76h",
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        "hash": "14723716782861686433",
        "name": "Sicilian: Dragon, Yugoslav, 9.O-O-O Bd7"
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    "B76i": {
        "eco": "B76i",
        "fen": "r2q1rk1/pp1bppbp/2np1np1/8/3NP1P1/2N1BP2/PPPQ3P/2KR1B1R b - g3 0 10",
        "hash": "8005191980686015420",
        "name": "Sicilian: Dragon, Yugoslav, 9.O-O-O Bd7 10.g4"
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    "B76j": {
        "eco": "B76j",
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        "hash": "9509172162427518931",
        "name": "Sicilian: Dragon, Yugoslav, 9.O-O-O Nxd4"
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    "B76k": {
        "eco": "B76k",
        "fen": "r2q1rk1/pp2ppbp/3pbnp1/8/3BP3/2N2P2/PPPQ2PP/2KR1B1R w - - 1 11",
        "hash": "6158580317355205527",
        "name": "Sicilian: Dragon, Yugoslav, 9.O-O-O Nxd4 10.Bxd4 Be6"
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    "B76l": {
        "eco": "B76l",
        "fen": "r2q1rk1/pp2ppbp/3pbnp1/8/3BP3/2N2P2/PPPQ2PP/1K1R1B1R b - - 2 11",
        "hash": "16069743013760680522",
        "name": "Sicilian: Dragon, Yugoslav, 9.O-O-O Nxd4: 11.Kb1"
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    "B76m": {
        "eco": "B76m",
        "fen": "r4rk1/ppq1ppbp/3pbnp1/8/3BP3/2N2P2/PPPQ2PP/1K1R1B1R w - - 3 12",
        "hash": "15644393500627045707",
        "name": "Sicilian: Dragon, Yugoslav, 9.O-O-O Nxd4: 11.Kb1 Qc7"
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    "B76n": {
        "eco": "B76n",
        "fen": "r4rk1/ppq1ppbp/3pbnp1/8/3BP1P1/2N2P2/PPPQ3P/1K1R1B1R b - g3 0 12",
        "hash": "8813840062144569430",
        "name": "Sicilian: Dragon, Yugoslav, 9.O-O-O Nxd4: 11.Kb1 Qc7 12.g4"
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    "B76o": {
        "eco": "B76o",
        "fen": "r1bq1rk1/pp2ppbp/2n2np1/3p4/3NP3/2N1BP2/PPPQ2PP/2KR1B1R w - - 0 10",
        "hash": "7679282686661018834",
        "name": "Sicilian: Dragon, Yugoslav, 9.O-O-O d5"
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    "B76p": {
        "eco": "B76p",
        "fen": "r1bq1rk1/pp2ppbp/2n2np1/3p4/3NP3/2N1BP2/PPP3PP/2KRQB1R b - - 1 10",
        "hash": "4767596075782740226",
        "name": "Sicilian: Dragon, Yugoslav, 9.O-O-O d5 10.Qe1"
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    "B76q": {
        "eco": "B76q",
        "fen": "r1bq1rk1/pp2ppbp/2n2np1/3P4/3N4/2N1BP2/PPPQ2PP/2KR1B1R b - - 0 10",
        "hash": "5570179401847637716",
        "name": "Sicilian: Dragon, Yugoslav, 9.O-O-O d5 10.exd5"
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    "B76r": {
        "eco": "B76r",
        "fen": "r1bq1rk1/p3ppbp/2p3p1/3N4/8/4BP2/PPPQ2PP/2KR1B1R b - - 0 12",
        "hash": "10562461661731880080",
        "name": "Sicilian: Dragon, Yugoslav, 9.O-O-O d5: 12.Nxd5"
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    "B76s": {
        "eco": "B76s",
        "fen": "r1bq1rk1/p3ppbp/2p3p1/3n4/3B4/2N2P2/PPPQ2PP/2KR1B1R b - - 1 12",
        "hash": "6506186475954509230",
        "name": "Sicilian: Dragon, Yugoslav, 9.O-O-O d5: 12.Bd4"
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    "B76t": {
        "eco": "B76t",
        "fen": "r1bq1rk1/p4pbp/2p3p1/3np3/3B4/2N2P2/PPPQ2PP/2KR1B1R w - e6 0 13",
        "hash": "15002218692855328152",
        "name": "Sicilian: Dragon, Yugoslav, 9.O-O-O d5: 12.Bd4 e5"
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    "B76u": {
        "eco": "B76u",
        "fen": "r2q1rk1/p4pbp/2p1b1p1/2Bnp3/8/2N2P2/PPPQ2PP/2KR1B1R w - - 2 14",
        "hash": "4418503998706761646",
        "name": "Sicilian: Dragon, Yugoslav, 9.O-O-O d5: 12.Bd4 e5 13.Bc5 Be6"
    },
    "B77a": {
        "eco": "B77a",
        "fen": "r1bq1rk1/pp2ppbp/2np1np1/8/2BNP3/2N1BP2/PPPQ2PP/R3K2R b KQ - 4 9",
        "hash": "8433598599120986030",
        "name": "Sicilian: Dragon, Yugoslav, 9.Bc4"
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    "B77b": {
        "eco": "B77b",
        "fen": "r1bq1rk1/1p2ppbp/2np1np1/p7/2BNP3/2N1BP2/PPPQ2PP/R3K2R w KQ a6 0 10",
        "hash": "17514671571036967742",
        "name": "Sicilian: Dragon, Yugoslav, Byrne Variation"
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    "B77c": {
        "eco": "B77c",
        "fen": "r1bq1rk1/pp2ppbp/3p1np1/4n3/2BNP3/2N1BP2/PPPQ2PP/R3K2R w KQ - 5 10",
        "hash": "9608206011046933966",
        "name": "Sicilian: Dragon, Yugoslav, 9.Bc4 Ne5"
    },
    "B77d": {
        "eco": "B77d",
        "fen": "r1bq1rk1/pp1nppbp/2np2p1/8/2BNP3/2N1BP2/PPPQ2PP/R3K2R w KQ - 5 10",
        "hash": "10109783573173802587",
        "name": "Sicilian: Dragon, Yugoslav, 9.Bc4 Nd7"
    },
    "B77e": {
        "eco": "B77e",
        "fen": "r1bq1rk1/pp2ppbp/3p1np1/8/2BnP3/2N1BP2/PPPQ2PP/R3K2R w KQ - 0 10",
        "hash": "15594185092277708525",
        "name": "Sicilian: Dragon, Yugoslav, 9.Bc4 Nxd4"
    },
    "B77f": {
        "eco": "B77f",
        "fen": "r2q1rk1/pp1bppbp/2np1np1/8/2BNP3/2N1BP2/PPPQ2PP/R3K2R w KQ - 5 10",
        "hash": "10938072983092875167",
        "name": "Sicilian: Dragon, Yugoslav, 9.Bc4 Bd7"
    },
    "B77g": {
        "eco": "B77g",
        "fen": "r2q1rk1/pp1bppbp/2np1np1/8/3NP3/1BN1BP2/PPPQ2PP/R3K2R b KQ - 6 10",
        "hash": "6831898299573346171",
        "name": "Sicilian: Dragon, Yugoslav, 9.Bc4 Bd7 10.Bb3"
    },
    "B77h": {
        "eco": "B77h",
        "fen": "r2q1rk1/pp1bppbp/2np1np1/8/2BNP1P1/2N1BP2/PPPQ3P/R3K2R b KQ g3 0 10",
        "hash": "3784948631555646082",
        "name": "Sicilian: Dragon, Yugoslav, 9.Bc4 Bd7 10.g4"
    },
    "B77i": {
        "eco": "B77i",
        "fen": "r2q1rk1/pp1bppbp/2np1np1/8/2BNP2P/2N1BP2/PPPQ2P1/R3K2R b KQ h3 0 10",
        "hash": "821989693191304929",
        "name": "Sicilian: Dragon, Yugoslav, 9.Bc4 Bd7 10.h4"
    },
    "B77j": {
        "eco": "B77j",
        "fen": "2rq1rk1/pp1bppbp/2np1np1/8/2BNP2P/2N1BP2/PPPQ2P1/R3K2R w KQ - 1 11",
        "hash": "2102770062265978522",
        "name": "Sicilian: Dragon, Yugoslav, 9.Bc4 Bd7 10.h4 Rc8"
    },
    "B78a": {
        "eco": "B78a",
        "fen": "r2q1rk1/pp1bppbp/2np1np1/8/2BNP3/2N1BP2/PPPQ2PP/2KR3R b - - 6 10",
        "hash": "12674979072228343815",
        "name": "Sicilian: Dragon, Yugoslav, 10.O-O-O"
    },
    "B78b": {
        "eco": "B78b",
        "fen": "r2q1rk1/pp1bppbp/3p1np1/4n3/2BNP3/2N1BP2/PPPQ2PP/2KR3R w - - 7 11",
        "hash": "6898264503205587559",
        "name": "Sicilian: Dragon, Yugoslav, 10.O-O-O Ne5"
    },
    "B78c": {
        "eco": "B78c",
        "fen": "2rq1rk1/pp1bppbp/2np1np1/8/2BNP3/2N1BP2/PPPQ2PP/2KR3R w - - 7 11",
        "hash": "13375782367330695292",
        "name": "Sicilian: Dragon, Yugoslav, 10.O-O-O Rc8"
    },
    "B78d": {
        "eco": "B78d",
        "fen": "2rq1rk1/pp1bppbp/3p1np1/4n3/3NP3/1BN1BP2/PPPQ2PP/2KR3R w - - 9 12",
        "hash": "9293563041082016504",
        "name": "Sicilian: Dragon, Yugoslav, Modern Main Line"
    },
    "B78e": {
        "eco": "B78e",
        "fen": "2rq1rk1/pp1bppbp/3p1np1/4n3/3NP3/1BN1BP2/PPPQ2PP/1K1R3R b - - 10 12",
        "hash": "760475373850501925",
        "name": "Sicilian: Dragon, Yugoslav, Main Line, 12.Kb1"
    },
    "B78f": {
        "eco": "B78f",
        "fen": "3q1rk1/p2bppbp/3p1np1/1p6/2rNP1P1/2N1BP2/PPPQ3P/1K1R3R w - b6 0 15",
        "hash": "15043550289966676405",
        "name": "Sicilian: Dragon, Yugoslav, Main Line, 12.Kb1: 14.g4 b5"
    },
    "B78g": {
        "eco": "B78g",
        "fen": "2rq1rk1/pp1bppbp/3p1np1/4n3/3NP2P/1BN1BP2/PPPQ2P1/2KR3R b - h3 0 12",
        "hash": "2043159171995270022",
        "name": "Sicilian: Dragon, Yugoslav, Main Line, 12.h4"
    },
    "B78h": {
        "eco": "B78h",
        "fen": "3q1rk1/pp1bppbp/3p1np1/8/2rNP1PP/2N1BP2/PPPQ4/2KR3R b - g3 0 14",
        "hash": "11967759101142555691",
        "name": "Sicilian: Dragon, Yugoslav, Main Line, 12.h4 Nc4: 14.g4"
    },
    "B78i": {
        "eco": "B78i",
        "fen": "3q1rk1/pp1bppbp/3p1np1/7P/2rNP3/2N1BP2/PPPQ2P1/2KR3R b - - 0 14",
        "hash": "1396448148009077173",
        "name": "Sicilian: Dragon, Yugoslav, Main Line, 12.h4 Nc4: 14.h5"
    },
    "B78j": {
        "eco": "B78j",
        "fen": "2rq1rk1/pp1bppb1/3p1np1/4n2p/3NP2P/1BN1BP2/PPPQ2P1/2KR3R w - h6 0 13",
        "hash": "73284692458822385",
        "name": "Sicilian: Dragon, Yugoslav, Main Line, 12.h4 h5"
    },
    "B78k": {
        "eco": "B78k",
        "fen": "2rq1rk1/pp1bppb1/3p1np1/4n2p/3NP2P/1BN1BP2/PPPQ2P1/1K1R3R b - - 1 13",
        "hash": "10047744075711740716",
        "name": "Sicilian: Dragon, Yugoslav, Main Line, 12.h4 h5 13.Kb1"
    },
    "B78l": {
        "eco": "B78l",
        "fen": "2rq1rk1/pp1bppb1/3p1npB/4n2p/3NP2P/1BN2P2/PPPQ2P1/2KR3R b - - 1 13",
        "hash": "12315802675383638106",
        "name": "Sicilian: Dragon, Yugoslav, Main Line, 12.h4 h5 13.Bh6"
    },
    "B78m": {
        "eco": "B78m",
        "fen": "2rq1rk1/pp1bpp2/3p1npb/4n2p/3NP2P/1BN2P2/PPPQ2P1/2KR3R w - - 0 14",
        "hash": "3843633532191883961",
        "name": "Sicilian: Dragon, Yugoslav, Main Line, 12.h4 h5 13.Bh6 Bxh6"
    },
    "B78n": {
        "eco": "B78n",
        "fen": "2rq1rk1/pp1bppb1/3p1np1/4n1Bp/3NP2P/1BN2P2/PPPQ2P1/2KR3R b - - 1 13",
        "hash": "5512571396844953534",
        "name": "Sicilian: Dragon, Yugoslav, Main Line, 12.h4 h5 13.Bg5"
    },
    "B78o": {
        "eco": "B78o",
        "fen": "3q1rk1/pp1bppb1/3p1np1/2r1n1Bp/3NP2P/1BN2P2/PPPQ2P1/2KR3R w - - 2 14",
        "hash": "3753850157249887924",
        "name": "Sicilian: Dragon, Yugoslav, Main Line, 12.h4 h5 13.Bg5 Rc5"
    },
    "B78p": {
        "eco": "B78p",
        "fen": "3q1rk1/pp1bppb1/3p1np1/2r1n1Bp/3NP1PP/1BN2P2/PPPQ4/2KR3R b - g3 0 14",
        "hash": "10904722139623560105",
        "name": "Sicilian: Dragon, Yugoslav, Main Line, 12.h4 h5 13.Bg5 Rc5 14.g4"
    },
    "B78q": {
        "eco": "B78q",
        "fen": "3q1rk1/pp1bppb1/3p1np1/2r1n1Bp/3NP2P/1BN2P2/PPPQ2P1/1K1R3R b - - 3 14",
        "hash": "13721558623480602473",
        "name": "Sicilian: Dragon, Yugoslav, Main Line, 12.h4 h5 13.Bg5 Rc5 14.Kb1"
    },
    "B78r": {
        "eco": "B78r",
        "fen": "r4rk1/pp1bppbp/2np1np1/q7/2BNP3/2N1BP2/PPPQ2PP/2KR3R w - - 7 11",
        "hash": "8544743650601230728",
        "name": "Sicilian: Dragon, Yugoslav, Old Main Line"
    },
    "B78s": {
        "eco": "B78s",
        "fen": "2r2rk1/pp1bppbp/2np1np1/q7/3NP3/1BN1BP2/PPPQ2PP/2KR3R w - - 9 12",
        "hash": "12238486120752056599",
        "name": "Sicilian: Dragon, Yugoslav, Old Main Line, 11.Bb3 Rac8"
    },
    "B78t": {
        "eco": "B78t",
        "fen": "r1r3k1/pp1bppbp/2np1np1/q7/3NP3/1BN1BP2/PPPQ2PP/2KR3R w - - 9 12",
        "hash": "1498062300219236647",
        "name": "Sicilian: Dragon, Yugoslav, Old Main Line, 11.Bb3 Rfc8"
    },
    "B79a": {
        "eco": "B79a",
        "fen": "r1r3k1/pp1bppbp/2np1np1/q7/3NP2P/1BN1BP2/PPPQ2P1/2KR3R b - h3 0 12",
        "hash": "9829585093789194329",
        "name": "Sicilian: Dragon, Yugoslav, Old Main Line, 12.h4"
    },
    "B79b": {
        "eco": "B79b",
        "fen": "r1r3k1/pp1bppbp/3p1np1/q3n3/3NP2P/1BN1BP2/PPPQ2P1/2KR3R w - - 1 13",
        "hash": "8661740243040907833",
        "name": "Sicilian: Dragon, Yugoslav, Old Main Line, 12.h4 Ne5"
    },
    "B79c": {
        "eco": "B79c",
        "fen": "r1r3k1/pp1bppbp/3p1np1/q3n3/3NP2P/1BN1BP2/PPPQ2P1/1K1R3R b - - 2 13",
        "hash": "17456005832117752804",
        "name": "Sicilian: Dragon, Yugoslav, Old Main Line, 12.h4 Ne5 13.Kb1"
    },
    "B79d": {
        "eco": "B79d",
        "fen": "r1r3k1/pp1bppbp/3p1np1/q7/2nNP2P/1BN1BP2/PPPQ2P1/1K1R3R w - - 3 14",
        "hash": "11193296885095075147",
        "name": "Sicilian: Dragon, Yugoslav, Old Main Line, 12.h4 Ne5 13.Kb1 Nc4"
    },
    "B79e": {
        "eco": "B79e",
        "fen": "r1r3k1/pp1bppbp/3p1np1/q3n3/3NP1PP/1BN1BP2/PPPQ4/2KR3R b - g3 0 13",
        "hash": "15814864037316747044",
        "name": "Sicilian: Dragon, Yugoslav, Old Main Line, 12.h4 Ne5 13.g4"
    },
    "B79f": {
        "eco": "B79f",
        "fen": "r1r3k1/pp1bppbp/3p1np1/q3n2P/3NP3/1BN1BP2/PPPQ2P1/2KR3R b - - 0 13",
        "hash": "7930421415650839226",
        "name": "Sicilian: Dragon, Yugoslav, Old Main Line, 12.h4 Ne5 13.h5"
    },
    "B80a": {
        "eco": "B80a",
        "fen": "rnbqkb1r/pp3ppp/3ppn2/8/3NP3/2N5/PPP2PPP/R1BQKB1R w KQkq - 0 6",
        "hash": "12475576582682896140",
        "name": "Sicilian: Scheveningen"
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    "B80b": {
        "eco": "B80b",
        "fen": "rnbqkb1r/pp3ppp/3ppn2/8/3NP3/2N1B3/PPP2PPP/R2QKB1R b KQkq - 1 6",
        "hash": "16008780591369878658",
        "name": "Sicilian: Scheveningen, 6.Be3"
    },
    "B80c": {
        "eco": "B80c",
        "fen": "r1bqkb1r/pp3ppp/2nppn2/8/3NP3/2N1B3/PPP2PPP/R2QKB1R w KQkq - 2 7",
        "hash": "8486828727199947137",
        "name": "Sicilian: Scheveningen, 6.Be3 Nc6"
    },
    "B80d": {
        "eco": "B80d",
        "fen": "r1bqkb1r/pp3ppp/2nppn2/8/3NP3/2N1BP2/PPP3PP/R2QKB1R b KQkq - 0 7",
        "hash": "1978949348244829936",
        "name": "Sicilian: Scheveningen, 6.Be3 Nc6"
    },
    "B80e": {
        "eco": "B80e",
        "fen": "rnbqkb1r/1p3ppp/p2ppn2/8/3NP3/2N1B3/PPP2PPP/R2QKB1R w KQkq - 0 7",
        "hash": "927016751078835294",
        "name": "Sicilian: Scheveningen, 6.Be3 a6"
    },
    "B80f": {
        "eco": "B80f",
        "fen": "rnbqkb1r/1p3ppp/p2ppn2/8/3NP3/2N1B3/PPPQ1PPP/R3KB1R b KQkq - 1 7",
        "hash": "2649562838474808318",
        "name": "Sicilian: Scheveningen, 7.Qd2"
    },
    "B80g": {
        "eco": "B80g",
        "fen": "rnbqkb1r/1p3ppp/p2ppn2/8/3NP3/2N1BP2/PPP3PP/R2QKB1R b KQkq - 0 7",
        "hash": "7092196222713129775",
        "name": "Sicilian: Scheveningen, English Attack"
    },
    "B80h": {
        "eco": "B80h",
        "fen": "r1bqkb1r/1p3ppp/p1nppn2/8/3NP3/2N1BP2/PPP3PP/R2QKB1R w KQkq - 1 8",
        "hash": "14519976839574670892",
        "name": "Sicilian: Scheveningen, English Attack, 7...Nc6"
    },
    "B80i": {
        "eco": "B80i",
        "fen": "r1bqk2r/1p2bppp/p1nppn2/8/3NP3/2N1BP2/PPPQ2PP/R3KB1R w KQkq - 3 9",
        "hash": "17678157277060480285",
        "name": "Sicilian: Scheveningen, English, 7...Nc6 8.Qd2"
    },
    "B80j": {
        "eco": "B80j",
        "fen": "rnbqkb1r/5ppp/p2ppn2/1p6/3NP3/2N1BP2/PPP3PP/R2QKB1R w KQkq b6 0 8",
        "hash": "173635936838702610",
        "name": "Sicilian: Scheveningen, English Attack, 7...b5"
    },
    "B80k": {
        "eco": "B80k",
        "fen": "rnbqkb1r/5ppp/p2ppn2/1p6/3NP3/2N1BP2/PPPQ2PP/R3KB1R b KQkq - 1 8",
        "hash": "3058137081986058674",
        "name": "Sicilian: Scheveningen, English, 7...b5 8.Qd2"
    },
    "B80l": {
        "eco": "B80l",
        "fen": "rn1qkb1r/1b3ppp/p2ppn2/1p6/3NP3/2N1BP2/PPPQ2PP/R3KB1R w KQkq - 2 9",
        "hash": "11160174951987160617",
        "name": "Sicilian: Scheveningen, English, 7...b5, 8.Qd2 Bb7"
    },
    "B80m": {
        "eco": "B80m",
        "fen": "r1bqkb1r/3n1ppp/p2ppn2/1p6/3NP3/2N1BP2/PPPQ2PP/R3KB1R w KQkq - 2 9",
        "hash": "1843049927074276478",
        "name": "Sicilian: Scheveningen, English, 7...b5 8.Qd2 Nbd7"
    },
    "B80n": {
        "eco": "B80n",
        "fen": "rnbqkb1r/pp3ppp/3ppn2/1B6/3NP3/2N5/PPP2PPP/R1BQK2R b KQkq - 1 6",
        "hash": "11456303556016632975",
        "name": "Sicilian: Scheveningen, Vitolins Variation"
    },
    "B80o": {
        "eco": "B80o",
        "fen": "rnbqkb1r/pp3ppp/3ppn2/8/3NP3/2N3P1/PPP2P1P/R1BQKB1R b KQkq - 0 6",
        "hash": "9350771952327409460",
        "name": "Sicilian: Scheveningen, Fianchetto Variation"
    },
    "B80p": {
        "eco": "B80p",
        "fen": "rnbqkb1r/1p3ppp/p2ppn2/8/3NP3/2N3P1/PPP2P1P/R1BQKB1R w KQkq - 0 7",
        "hash": "5995254824714225640",
        "name": "Sicilian: Scheveningen, Fianchetto Variation"
    },
    "B80q": {
        "eco": "B80q",
        "fen": "r1bqkb1r/pp3ppp/2nppn2/8/3NP3/2N3P1/PPP2P1P/R1BQKB1R w KQkq - 1 7",
        "hash": "3038035763523000887",
        "name": "Sicilian: Scheveningen, Fianchetto Variation"
    },
    "B80r": {
        "eco": "B80r",
        "fen": "r1bqkb1r/1p3ppp/p1nppn2/8/3NP3/2N3P1/PPP2PBP/R1BQK2R w KQkq - 0 8",
        "hash": "5561549582094416530",
        "name": "Sicilian: Scheveningen, Fianchetto Variation"
    },
    "B80s": {
        "eco": "B80s",
        "fen": "r1b1kb1r/ppq2ppp/2nppn2/8/3NP3/2N3P1/PPP2PBP/R1BQK2R w KQkq - 3 8",
        "hash": "11080642006121057615",
        "name": "Sicilian: Scheveningen, Fianchetto Variation"
    },
    "B80t": {
        "eco": "B80t",
        "fen": "r1b1kb1r/1pq2ppp/p1nppn2/8/3NP3/2N3P1/PPP2PBP/R1BQ1RK1 w kq - 0 9",
        "hash": "3838425835837927043",
        "name": "Sicilian: Scheveningen, Fianchetto Variation"
    },
    "B80u": {
        "eco": "B80u",
        "fen": "r1b1k2r/1pq1bppp/p1nppn2/8/3NP3/2N3P1/PPP2PBP/R1BQR1K1 w kq - 2 10",
        "hash": "11906583455687649542",
        "name": "Sicilian: Scheveningen, Fianchetto Variation"
    },
    "B81a": {
        "eco": "B81a",
        "fen": "rnbqkb1r/pp3ppp/3ppn2/8/3NP1P1/2N5/PPP2P1P/R1BQKB1R b KQkq g3 0 6",
        "hash": "1040093037382535697",
        "name": "Sicilian: Scheveningen, Keres Attack"
    },
    "B81b": {
        "eco": "B81b",
        "fen": "rnbqkb1r/pp3ppp/3p1n2/4p3/3NP1P1/2N5/PPP2P1P/R1BQKB1R w KQkq - 0 7",
        "hash": "772081233263585148",
        "name": "Sicilian: Scheveningen, Keres, 6...e5"
    },
    "B81c": {
        "eco": "B81c",
        "fen": "rnbqkb1r/1p3ppp/p2ppn2/8/3NP1P1/2N5/PPP2P1P/R1BQKB1R w KQkq - 0 7",
        "hash": "15895691179907085005",
        "name": "Sicilian: Scheveningen, Keres, 6...a6"
    },
    "B81d": {
        "eco": "B81d",
        "fen": "rnbqkb1r/1p3ppp/p2ppn2/8/3NP1P1/2N1B3/PPP2P1P/R2QKB1R b KQkq - 1 7",
        "hash": "12650731218247215427",
        "name": "Sicilian: Scheveningen, Keres, Perenyi Attack"
    },
    "B81e": {
        "eco": "B81e",
        "fen": "rnbqkb1r/1p3ppp/p2p1n2/4p3/3NP1P1/2N1B3/PPP2P1P/R2QKB1R w KQkq - 0 8",
        "hash": "12342591782581765166",
        "name": "Sicilian: Scheveningen, Keres, Perenyi Attack, 7...e5"
    },
    "B81f": {
        "eco": "B81f",
        "fen": "rnbqkb1r/1p3pp1/p2ppn1p/8/3NP1P1/2N1B3/PPP2P1P/R2QKB1R w KQkq - 0 8",
        "hash": "4424547364136919126",
        "name": "Sicilian: Scheveningen, Keres, Perenyi Attack, 7...h6"
    },
    "B81g": {
        "eco": "B81g",
        "fen": "rnbqkb1r/1p3pp1/p2ppn1p/8/3NPPP1/2N1B3/PPP4P/R2QKB1R b KQkq f3 0 8",
        "hash": "13866965262950243807",
        "name": "Sicilian: Scheveningen, Keres, Perenyi Attack, 7...h6 8.f4"
    },
    "B81h": {
        "eco": "B81h",
        "fen": "rnbqkb1r/pp3pp1/3ppn1p/8/3NP1P1/2N5/PPP2P1P/R1BQKB1R w KQkq - 0 7",
        "hash": "11283888153949061892",
        "name": "Sicilian: Scheveningen, Keres, 6...h6"
    },
    "B81i": {
        "eco": "B81i",
        "fen": "rnbqkb1r/pp3pp1/3ppn1p/8/3NP1P1/2N4P/PPP2P2/R1BQKB1R b KQkq - 0 7",
        "hash": "8388994182252628726",
        "name": "Sicilian: Scheveningen, Keres, 6...h6 7.h3"
    },
    "B81j": {
        "eco": "B81j",
        "fen": "rnbqkb1r/pp3pp1/3ppn1p/8/3NP1PP/2N5/PPP2P2/R1BQKB1R b KQkq h3 0 7",
        "hash": "16871268911430266",
        "name": "Sicilian: Scheveningen, Keres, 6...h6 7.h4"
    },
    "B81k": {
        "eco": "B81k",
        "fen": "rnbqk2r/pp2bpp1/3ppn1p/8/3NP1PP/2N5/PPP2P2/R1BQKB1R w KQkq - 1 8",
        "hash": "1510821042087237355",
        "name": "Sicilian: Scheveningen, Keres, 6...h6 7.h4 Be7"
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    "B81l": {
        "eco": "B81l",
        "fen": "r1bqkb1r/pp3pp1/2nppn1p/8/3NP1PP/2N5/PPP2P2/R1BQKB1R w KQkq - 1 8",
        "hash": "12382128989663240057",
        "name": "Sicilian: Scheveningen, Keres, 6...h6 7.h4 Nc6"
    },
    "B81m": {
        "eco": "B81m",
        "fen": "r1bqkb1r/pp3pp1/2nppn1p/8/3NP1PP/2N5/PPP2P2/R1BQKBR1 b Qkq - 2 8",
        "hash": "12656836197030299059",
        "name": "Sicilian: Scheveningen, Keres, 6...h6 7.h4 Nc6 8.Rg1"
    },
    "B81n": {
        "eco": "B81n",
        "fen": "r1bqkb1r/pp3pp1/2nppn2/7p/3NP1PP/2N5/PPP2P2/R1BQKBR1 w Qkq - 0 9",
        "hash": "15625782896439027928",
        "name": "Sicilian: Scheveningen, Keres, 6...h6 7.h4 Nc6 8.Rg1 h5"
    },
    "B81o": {
        "eco": "B81o",
        "fen": "rnbqkb1r/pp3pp1/3ppn1p/6P1/3NP3/2N5/PPP2P1P/R1BQKB1R b KQkq - 0 7",
        "hash": "15332869117485984217",
        "name": "Sicilian: Scheveningen, Keres, 6...h6 7.g5"
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    "B81p": {
        "eco": "B81p",
        "fen": "rnbqkb1r/pp3pp1/3ppn1p/8/3NP1P1/2N5/PPP2P1P/R1BQKBR1 b Qkq - 1 7",
        "hash": "11018155160317909454",
        "name": "Sicilian: Scheveningen, Keres, 6...h6 7.Rg1"
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    "B81q": {
        "eco": "B81q",
        "fen": "r1bqkb1r/pp3ppp/2nppn2/8/3NP1P1/2N5/PPP2P1P/R1BQKB1R w KQkq - 1 7",
        "hash": "11926376209402474258",
        "name": "Sicilian: Scheveningen, Keres, 6...Nc6"
    },
    "B81r": {
        "eco": "B81r",
        "fen": "r1bqkb1r/pp1n1ppp/2npp3/6P1/3NP3/2N5/PPP2P1P/R1BQKB1R w KQkq - 1 8",
        "hash": "1483051088549956666",
        "name": "Sicilian: Scheveningen, Keres, 6...Nc6 7.g5 Nd7"
    },
    "B81s": {
        "eco": "B81s",
        "fen": "r1bqkb1r/pp1n1ppp/2npp3/6P1/3NP3/2N1B3/PPP2P1P/R2QKB1R b KQkq - 2 8",
        "hash": "7465948896347084724",
        "name": "Sicilian: Scheveningen, Keres, 6...Nc6 7.g5 Nd7 8.Be3"
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    "B81t": {
        "eco": "B81t",
        "fen": "r1bqk2r/pp1nbppp/2npp3/6P1/3NP3/2N1B3/PPP2P1P/R2QKB1R w KQkq - 3 9",
        "hash": "8309162309777324837",
        "name": "Sicilian: Scheveningen, Keres, 6...Nc6 7.g5 Nd7 8.Be3 Be7"
    },
    "B82": {
        "eco": "B82",
        "fen": "rnbqkb1r/pp3ppp/3ppn2/8/3NPP2/2N5/PPP3PP/R1BQKB1R b KQkq f3 0 6",
        "hash": "5779345104891271813",
        "name": "Sicilian: Scheveningen, 6.f4"
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    "B83": {
        "eco": "B83",
        "fen": "rnbqkb1r/pp3ppp/3ppn2/8/3NP3/2N5/PPP1BPPP/R1BQK2R b KQkq - 1 6",
        "hash": "16042566468421529007",
        "name": "Sicilian: Scheveningen, 6.Be2"
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    "B84": {
        "eco": "B84",
        "fen": "rnbqkb1r/1p3ppp/p2ppn2/8/3NP3/2N5/PPP1BPPP/R1BQK2R w KQkq - 0 7",
        "hash": "888709716576523635",
        "name": "Sicilian: Scheveningen, Classical"
    },
    "B85": {
        "eco": "B85",
        "fen": "rnbq1rk1/1p2bppp/p2ppn2/8/3NPP2/2N1B3/PPP1B1PP/R2Q1RK1 b - - 2 9",
        "hash": "16310480163128339742",
        "name": "Sicilian: Scheveningen, Classical, Main Line"
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    "B86": {
        "eco": "B86",
        "fen": "rnbqkb1r/pp3ppp/3ppn2/8/2BNP3/2N5/PPP2PPP/R1BQK2R b KQkq - 1 6",
        "hash": "14884839758277456298",
        "name": "Sicilian: Sozin-Scheveningen"
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    "B87": {
        "eco": "B87",
        "fen": "rnbqkb1r/5ppp/p2ppn2/1p6/3NP3/1BN5/PPP2PPP/R1BQK2R w KQkq b6 0 8",
        "hash": "13071162599844226223",
        "name": "Sicilian: Sozin-Najdorf, 7.Bb3 b5"
    },
    "B88": {
        "eco": "B88",
        "fen": "r1bqkb1r/pp3ppp/2nppn2/8/2BNP3/2N5/PPP2PPP/R1BQK2R w KQkq - 2 7",
        "hash": "7312801291203024041",
        "name": "Sicilian: Sozin-Scheveningen"
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    "B89": {
        "eco": "B89",
        "fen": "r1bqkb1r/pp3ppp/2nppn2/8/2BNP3/2N1B3/PPP2PPP/R2QK2R b KQkq - 3 7",
        "hash": "1618184157921709863",
        "name": "Sicilian: Sozin, 7.Be3"
    },
    "B90a": {
        "eco": "B90a",
        "fen": "rnbqkb1r/1p2pppp/p2p1n2/8/3NP3/2N5/PPP2PPP/R1BQKB1R w KQkq - 0 6",
        "hash": "694158040231612290",
        "name": "Sicilian: Najdorf"
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    "B90b": {
        "eco": "B90b",
        "fen": "rnbqkb1r/1p2pppp/p2p1n2/8/P2NP3/2N5/1PP2PPP/R1BQKB1R b KQkq a3 0 6",
        "hash": "7091863069284850252",
        "name": "Sicilian: Najdorf, 6.a4"
    },
    "B90c": {
        "eco": "B90c",
        "fen": "rnbqkb1r/1p3ppp/p2p1n2/4p3/P2NP3/2N5/1PP2PPP/R1BQKB1R w KQkq e6 0 7",
        "hash": "16722801829683569274",
        "name": "Sicilian: Najdorf, 6.a4 e5"
    },
    "B90d": {
        "eco": "B90d",
        "fen": "rnbqkb1r/1p2pppp/p2p1n2/8/3NP3/2N2P2/PPP3PP/R1BQKB1R b KQkq - 0 6",
        "hash": "7427494885499232499",
        "name": "Sicilian: Najdorf, 6.f3"
    },
    "B90e": {
        "eco": "B90e",
        "fen": "rnbqkb1r/1p2pppp/p2p1n2/8/3NP3/2N4P/PPP2PP1/R1BQKB1R b KQkq - 0 6",
        "hash": "16236031573145634416",
        "name": "Sicilian: Najdorf, Adams Attack"
    },
    "B90f": {
        "eco": "B90f",
        "fen": "rnbqkb1r/1p2pppp/p2p1n2/8/2BNP3/2N5/PPP2PPP/R1BQK2R b KQkq - 1 6",
        "hash": "7643049641021233444",
        "name": "Sicilian: Najdorf, Fischer-Sozin Attack"
    },
    "B90g": {
        "eco": "B90g",
        "fen": "rnbqkb1r/1p2pppp/p2p1n2/8/3NP3/2N1B3/PPP2PPP/R2QKB1R b KQkq - 1 6",
        "hash": "8839051919898350604",
        "name": "Sicilian: Najdorf, 6.Be3"
    },
    "B90h": {
        "eco": "B90h",
        "fen": "rnbqkb1r/1p2pppp/p2p4/8/3NP1n1/2N1B3/PPP2PPP/R2QKB1R w KQkq - 2 7",
        "hash": "16684083472839214432",
        "name": "Sicilian: Najdorf, 6.Be3 Ng4"
    },
    "B90i": {
        "eco": "B90i",
        "fen": "rnbqk2r/1p2ppb1/p2p3p/6p1/3NP1n1/2N3B1/PPP2PPP/R2QKB1R w KQkq - 2 10",
        "hash": "15847217744859867763",
        "name": "Sicilian: Najdorf, 6.Be3 Ng4 7.Bg5 h6 8.Bh4 g5 9.Bg3 Bg7"
    },
    "B90j": {
        "eco": "B90j",
        "fen": "rnbqk2r/1p2ppb1/p2p3p/6p1/3NP1n1/2N3B1/PPP1BPPP/R2QK2R b KQkq - 3 10",
        "hash": "12136114036874338512",
        "name": "Sicilian: Najdorf, 6.Be3 Ng4 7.Bg5 h6 8.Bh4 g5 9.Bg3 Bg7 10.Be2"
    },
    "B90k": {
        "eco": "B90k",
        "fen": "rnbqkb1r/1p3ppp/p2p1n2/4p3/3NP3/2N1B3/PPP2PPP/R2QKB1R w KQkq e6 0 7",
        "hash": "17353097968401738810",
        "name": "Sicilian: Najdorf, 6.Be3 e5"
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    "B90l": {
        "eco": "B90l",
        "fen": "rnbqkb1r/1p3ppp/p2p1n2/4p3/4P3/1NN1B3/PPP2PPP/R2QKB1R b KQkq - 1 7",
        "hash": "7251831708267621104",
        "name": "Sicilian: Najdorf, 6.Be3 e5 7.Nb3"
    },
    "B90m": {
        "eco": "B90m",
        "fen": "rn1qkb1r/1p3ppp/p2pbn2/4p3/4P3/1NN1B3/PPPQ1PPP/R3KB1R b KQkq - 3 8",
        "hash": "1730354086797643352",
        "name": "Sicilian: Najdorf, 6.Be3 e5 7.Nb3 Be6 8.Qd2"
    },
    "B90n": {
        "eco": "B90n",
        "fen": "rn1qkb1r/1p3ppp/p2pbn2/4p3/4P3/1NN1BP2/PPP3PP/R2QKB1R b KQkq - 0 8",
        "hash": "6821504698542669449",
        "name": "Sicilian: Najdorf, 6.Be3 e5 7.Nb3 Be6 8.f3"
    },
    "B90o": {
        "eco": "B90o",
        "fen": "rn1qk2r/1p2bppp/p2pbn2/4p3/4P3/1NN1BP2/PPP3PP/R2QKB1R w KQkq - 1 9",
        "hash": "5361158835608261144",
        "name": "Sicilian: Najdorf, 6.Be3 e5 7.Nb3 Be6 8.f3 Be7"
    },
    "B90p": {
        "eco": "B90p",
        "fen": "r2qk2r/1p1nbppp/p2pbn2/4p3/4P3/1NN1BP2/PPPQ2PP/R3KB1R w KQkq - 3 10",
        "hash": "5881029708185968756",
        "name": "Sicilian: Najdorf, 6.Be3 e5 7.Nb3 Be6 8.f3 Be7 9.Qd2 Nbd7"
    },
    "B90q": {
        "eco": "B90q",
        "fen": "rn1q1rk1/1p2bppp/p2pbn2/4p3/4P3/1NN1BP2/PPPQ2PP/R3KB1R w KQ - 3 10",
        "hash": "7554238303285847123",
        "name": "Sicilian: Najdorf, 6.Be3 e5 7.Nb3 Be6 8.f3 Be7 9.Qd2 O-O"
    },
    "B90r": {
        "eco": "B90r",
        "fen": "r2q1rk1/1p1nbppp/p2pbn2/4p3/4P3/1NN1BP2/PPPQ2PP/2KR1B1R w - - 5 11",
        "hash": "7140516345720489479",
        "name": "Sicilian: Najdorf, 6.Be3 e5 7.Nb3 Be6 8.f3 Be7 9.Qd2 O-O 10.O-O-O Nbd7"
    },
    "B90s": {
        "eco": "B90s",
        "fen": "r2qkb1r/1p1n1ppp/p2pbn2/4p3/4P3/1NN1BP2/PPP3PP/R2QKB1R w KQkq - 1 9",
        "hash": "7875002703693468485",
        "name": "Sicilian: Najdorf, 6.Be3 e5 7.Nb3 Be6 8.f3 Nbd7"
    },
    "B90t": {
        "eco": "B90t",
        "fen": "r2qkb1r/1p1n1ppp/p2pbn2/4p3/4P3/1NN1BP2/PPPQ2PP/R3KB1R b KQkq - 2 9",
        "hash": "4995035916567973093",
        "name": "Sicilian: Najdorf, 6.Be3 e5 7.Nb3 Be6 8.f3 Be7 9.Qd2"
    },
    "B90u": {
        "eco": "B90u",
        "fen": "r2qkb1r/3n1ppp/p2pbn2/1p2p3/4P3/1NN1BP2/PPPQ2PP/R3KB1R w KQkq b6 0 10",
        "hash": "2690202201409171928",
        "name": "Sicilian: Najdorf, 6.Be3 e5 7.Nb3 Be6 8.f3 Be7 9.Qd2 b5"
    },
    "B91a": {
        "eco": "B91a",
        "fen": "rnbqkb1r/1p2pppp/p2p1n2/8/3NP3/2N3P1/PPP2P1P/R1BQKB1R b KQkq - 0 6",
        "hash": "2685445338569594810",
        "name": "Sicilian: Najdorf, 6.g3"
    },
    "B91b": {
        "eco": "B91b",
        "fen": "rnbqkb1r/4pppp/p2p1n2/1p6/3NP3/2N3P1/PPP2P1P/R1BQKB1R w KQkq b6 0 7",
        "hash": "4990257059720522375",
        "name": "Sicilian: Najdorf, 6.g3 b5"
    },
    "B91c": {
        "eco": "B91c",
        "fen": "rnbqkb1r/1p2pp1p/p2p1np1/8/3NP3/2N3P1/PPP2P1P/R1BQKB1R w KQkq - 0 7",
        "hash": "14767528671826986481",
        "name": "Sicilian: Najdorf, 6.g3 g6"
    },
    "B91d": {
        "eco": "B91d",
        "fen": "r1bqkb1r/1p2pppp/p1np1n2/8/3NP3/2N3P1/PPP2P1P/R1BQKB1R w KQkq - 1 7",
        "hash": "10279825332164555449",
        "name": "Sicilian: Najdorf, 6.g3 Nc6"
    },
    "B91e": {
        "eco": "B91e",
        "fen": "rn1qkb1r/1p2pppp/p2p1n2/8/3NP1b1/2N3P1/PPP2P1P/R1BQKB1R w KQkq - 1 7",
        "hash": "2852841784452471120",
        "name": "Sicilian: Najdorf, 6.g3 Bg4"
    },
    "B91f": {
        "eco": "B91f",
        "fen": "rnbqkb1r/1p3ppp/p2p1n2/4p3/3NP3/2N3P1/PPP2P1P/R1BQKB1R w KQkq e6 0 7",
        "hash": "12627132400217796492",
        "name": "Sicilian: Najdorf, 6.g3 e5"
    },
    "B91g": {
        "eco": "B91g",
        "fen": "rnbqkb1r/1p3ppp/p2p1n2/4p3/4P3/1NN3P1/PPP2P1P/R1BQKB1R b KQkq - 1 7",
        "hash": "4273263113364138310",
        "name": "Sicilian: Najdorf, 6.g3 e5 7.Nb3"
    },
    "B91h": {
        "eco": "B91h",
        "fen": "rnbqk2r/1p2bppp/p2p1n2/4p3/4P3/1NN3P1/PPP2P1P/R1BQKB1R w KQkq - 2 8",
        "hash": "3423261038101054935",
        "name": "Sicilian: Najdorf, 6.g3 e5 7.Nb3 Be7"
    },
    "B91i": {
        "eco": "B91i",
        "fen": "rnbqkb1r/1p3ppp/p2p1n2/4p3/4P3/2N3P1/PPP1NP1P/R1BQKB1R b KQkq - 1 7",
        "hash": "2205368750777793408",
        "name": "Sicilian: Najdorf, 6.g3 e5 7.Nde2"
    },
    "B91j": {
        "eco": "B91j",
        "fen": "rnbqkb1r/5ppp/p2p1n2/1p2p3/4P3/2N3P1/PPP1NP1P/R1BQKB1R w KQkq b6 0 8",
        "hash": "9124118177984726717",
        "name": "Sicilian: Najdorf, 6.g3 e5 7.Nde2 b5"
    },
    "B91k": {
        "eco": "B91k",
        "fen": "r1bqkb1r/1p1n1ppp/p2p1n2/4p3/4P3/2N3P1/PPP1NP1P/R1BQKB1R w KQkq - 2 8",
        "hash": "3276492339621893708",
        "name": "Sicilian: Najdorf, 6.g3 e5 7.Nde2 Nbd7"
    },
    "B91l": {
        "eco": "B91l",
        "fen": "rnbqk2r/1p2bppp/p2p1n2/4p3/4P3/2N3P1/PPP1NP1P/R1BQKB1R w KQkq - 2 8",
        "hash": "745197160218285841",
        "name": "Sicilian: Najdorf, 6.g3 e5 7.Nde2 Be7"
    },
    "B91m": {
        "eco": "B91m",
        "fen": "r1bqk2r/1p1nbppp/p2p1n2/4p3/4P3/2N3P1/PPP1NPBP/R1BQK2R w KQkq - 4 9",
        "hash": "10107239742697759396",
        "name": "Sicilian: Najdorf, 6.g3 e5 7.Nde2 Be7 8.Bg2 Nbd7"
    },
    "B91n": {
        "eco": "B91n",
        "fen": "rnbq1rk1/1p2bppp/p2p1n2/4p3/4P3/2N3P1/PPP1NPBP/R1BQK2R w KQ - 4 9",
        "hash": "13046846846537098883",
        "name": "Sicilian: Najdorf, 6.g3 e5 7.Nde2 Be7 8.Bg2 O-O"
    },
    "B92a": {
        "eco": "B92a",
        "fen": "rnbqkb1r/1p2pppp/p2p1n2/8/3NP3/2N5/PPP1BPPP/R1BQK2R b KQkq - 1 6",
        "hash": "8800780198616876321",
        "name": "Sicilian: Najdorf, 6.Be2"
    },
    "B92b": {
        "eco": "B92b",
        "fen": "r1bqkb1r/1p1npppp/p2p1n2/8/3NP3/2N5/PPP1BPPP/R1BQK2R w KQkq - 2 7",
        "hash": "5314772764676139245",
        "name": "Sicilian: Najdorf, 6.Be2 Nbd7"
    },
    "B92c": {
        "eco": "B92c",
        "fen": "rnbqkb1r/1p3ppp/p2p1n2/4p3/3NP3/2N5/PPP1BPPP/R1BQK2R w KQkq e6 0 7",
        "hash": "17319347443229015319",
        "name": "Sicilian: Najdorf, 6.Be2 e5"
    },
    "B92d": {
        "eco": "B92d",
        "fen": "rnbqkb1r/1p3ppp/p2p1n2/4p3/4P3/2N2N2/PPP1BPPP/R1BQK2R b KQkq - 1 7",
        "hash": "10249406257985521112",
        "name": "Sicilian: Najdorf, 6.Be2 e5 7.Nf3"
    },
    "B92e": {
        "eco": "B92e",
        "fen": "rnbqkb1r/1p3ppp/p2p1n2/4p3/4P3/1NN5/PPP1BPPP/R1BQK2R b KQkq - 1 7",
        "hash": "7218028380764765149",
        "name": "Sicilian: Najdorf, 6.Be2 e5 7.Nb3"
    },
    "B92f": {
        "eco": "B92f",
        "fen": "rnbqk2r/1p2bppp/p2p1n2/4p3/4P3/1NN5/PPP1BPPP/R1BQK2R w KQkq - 2 8",
        "hash": "8135723581272250188",
        "name": "Sicilian: Najdorf, 6.Be2 e5 7.Nb3 Be7"
    },
    "B92g": {
        "eco": "B92g",
        "fen": "rnbqk2r/1p2bppp/p2p1n2/4p3/4P3/1NN1B3/PPP1BPPP/R2QK2R b KQkq - 3 8",
        "hash": "283549284949445826",
        "name": "Sicilian: Najdorf, 6.Be2 e5 7.Nb3 Be7 8.Be3"
    },
    "B92h": {
        "eco": "B92h",
        "fen": "rnbqk2r/1p2bppp/p2p1n2/4p3/4P3/1NN5/PPP1BPPP/R1BQ1RK1 b kq - 3 8",
        "hash": "1050075705816353884",
        "name": "Sicilian: Najdorf, 6.Be2 e5 7.Nb3 Be7 8.O-O"
    },
    "B92i": {
        "eco": "B92i",
        "fen": "rn1qk2r/1p2bppp/p2pbn2/4p3/4PP2/1NN5/PPP1B1PP/R1BQ1RK1 b kq f3 0 9",
        "hash": "12050631579804355293",
        "name": "Sicilian: Najdorf, 6.Be2 e5 7.Nb3 Be7 8.O-O Be6 9.f4"
    },
    "B92j": {
        "eco": "B92j",
        "fen": "rnbq1rk1/1p2bppp/p2p1n2/4p3/4P3/1NN5/PPP1BPPP/R1BQ1RK1 w - - 4 9",
        "hash": "304683458170086839",
        "name": "Sicilian: Najdorf, 6.Be2 e5 7.Nb3 Be7 8.O-O O-O"
    },
    "B92k": {
        "eco": "B92k",
        "fen": "rnbq1rk1/1p2bppp/p2p1n2/4p3/4P3/1NN1B3/PPP1BPPP/R2Q1RK1 b - - 5 9",
        "hash": "8589147415428234809",
        "name": "Sicilian: Najdorf, 6.Be2 e5 7.Nb3 Be7 8.O-O O-O 9.Be3"
    },
    "B92l": {
        "eco": "B92l",
        "fen": "rn1q1rk1/1p2bppp/p2pbn2/4p3/P3P3/1NN1B3/1PP1BPPP/R2Q1RK1 b - a3 0 10",
        "hash": "5207045352837271807",
        "name": "Sicilian: Najdorf, 6.Be2 e5 7.Nb3 Be7 8.O-O O-O 9.Be3 Be6 10.a4"
    },
    "B92m": {
        "eco": "B92m",
        "fen": "rn1q1rk1/1p2bppp/p2pbn2/3Np3/4P3/1N2B3/PPP1BPPP/R2Q1RK1 b - - 7 10",
        "hash": "16402097651600095844",
        "name": "Sicilian: Najdorf, 6.Be2 e5 7.Nb3 Be7 8.O-O O-O 9.Be3 Be6 10.Nd5"
    },
    "B92n": {
        "eco": "B92n",
        "fen": "rn1q1rk1/1p2bppp/p2pbn2/4p3/4P3/1NN1B3/PPPQBPPP/R4RK1 b - - 7 10",
        "hash": "833752291358857873",
        "name": "Sicilian: Najdorf, 6.Be2 e5 7.Nb3 Be7 8.O-O O-O 9.Be3 Be6 10.Qd2"
    },
    "B92o": {
        "eco": "B92o",
        "fen": "rnbq1rk1/1p2bppp/p2p1n2/4p3/4P3/1NN5/PPP1BPPP/R1BQ1R1K b - - 5 9",
        "hash": "3859937099344824312",
        "name": "Sicilian: Najdorf, 6.Be2 e5 7.Nb3 Be7 8.O-O O-O 9.Kh1"
    },
    "B92p": {
        "eco": "B92p",
        "fen": "rn1q1rk1/1p2bppp/p2pbn2/4p3/4P3/1NN5/PPP1BPPP/R1BQ1R1K w - - 6 10",
        "hash": "7001358555898559728",
        "name": "Sicilian: Najdorf, 6.Be2 e5 7.Nb3 Be7 8.O-O O-O 9.Kh1 Be6"
    },
    "B92q": {
        "eco": "B92q",
        "fen": "r1bq1rk1/1p2bppp/p1np1n2/4p3/4P3/1NN5/PPP1BPPP/R1BQ1R1K w - - 6 10",
        "hash": "11420170659810861819",
        "name": "Sicilian: Najdorf, 6.Be2 e5 7.Nb3 Be7 8.O-O O-O 9.Kh1 Nc6"
    },
    "B92r": {
        "eco": "B92r",
        "fen": "rnb2rk1/1pq1bppp/p2p1n2/4p3/4P3/1NN5/PPP1BPPP/R1BQ1R1K w - - 6 10",
        "hash": "3715046887972636921",
        "name": "Sicilian: Najdorf, 6.Be2 e5 7.Nb3 Be7 8.O-O O-O 9.Kh1 Qc7"
    },
    "B93a": {
        "eco": "B93a",
        "fen": "rnbqkb1r/1p2pppp/p2p1n2/8/3NPP2/2N5/PPP3PP/R1BQKB1R b KQkq f3 0 6",
        "hash": "17632815208091988491",
        "name": "Sicilian: Najdorf, 6.f4"
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    "B93b": {
        "eco": "B93b",
        "fen": "r1bqkb1r/1p2pppp/p1np1n2/8/3NPP2/2N5/PPP3PP/R1BQKB1R w KQkq - 1 7",
        "hash": "6870664407265580808",
        "name": "Sicilian: Najdorf, 6.f4 Nc6"
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    "B93c": {
        "eco": "B93c",
        "fen": "r1bqkb1r/1p1npppp/p2p1n2/8/3NPP2/2N5/PPP3PP/R1BQKB1R w KQkq - 1 7",
        "hash": "14363988430483185607",
        "name": "Sicilian: Najdorf, 6.f4 Nbd7"
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    "B93d": {
        "eco": "B93d",
        "fen": "r1bqkb1r/1p1npppp/p2p1n2/8/3NPP2/2N5/PPP1B1PP/R1BQK2R b KQkq - 2 7",
        "hash": "13031060684696196452",
        "name": "Sicilian: Najdorf, 6.f4 Nbd7 7.Be2"
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    "B93e": {
        "eco": "B93e",
        "fen": "rnb1kb1r/1pq1pppp/p2p1n2/8/3NPP2/2N5/PPP3PP/R1BQKB1R w KQkq - 1 7",
        "hash": "17486183379159678218",
        "name": "Sicilian: Najdorf, 6.f4 Qc7"
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    "B93f": {
        "eco": "B93f",
        "fen": "rnb1kb1r/1pq1pppp/p2p1n2/8/3NPP2/2NB4/PPP3PP/R1BQK2R b KQkq - 2 7",
        "hash": "12080561307848687481",
        "name": "Sicilian: Najdorf, 6.f4 Qc7 7.Bd3"
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    "B93g": {
        "eco": "B93g",
        "fen": "rnb1kb1r/1pq1pp1p/p2p1np1/8/3NPP2/2NB4/PPP3PP/R1BQK2R w KQkq - 0 8",
        "hash": "5625723650124131634",
        "name": "Sicilian: Najdorf, 6.f4 Qc7 7.Bd3 g6"
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    "B93h": {
        "eco": "B93h",
        "fen": "rnb1kb1r/1pq1pppp/p2p1n2/8/4PP2/2N2N2/PPP3PP/R1BQKB1R b KQkq - 2 7",
        "hash": "10145762443075143109",
        "name": "Sicilian: Najdorf, 6.f4 Qc7 7.Nf3"
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    "B93i": {
        "eco": "B93i",
        "fen": "r1b1kb1r/1pqnpppp/p2p1n2/8/4PP2/2N2N2/PPP3PP/R1BQKB1R w KQkq - 3 8",
        "hash": "13776377609775917065",
        "name": "Sicilian: Najdorf, 6.f4 Qc7 7.Nf3 Nbd7"
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    "B93j": {
        "eco": "B93j",
        "fen": "r1b1kb1r/1pqnpppp/p2p1n2/8/4PP2/2NB1N2/PPP3PP/R1BQK2R b KQkq - 4 8",
        "hash": "16871090928991234682",
        "name": "Sicilian: Najdorf, 6.f4 Qc7 7.Nf3 Nbd7 8.Bd3"
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    "B93k": {
        "eco": "B93k",
        "fen": "rnbqkb1r/1p3ppp/p2p1n2/4p3/3NPP2/2N5/PPP3PP/R1BQKB1R w KQkq e6 0 7",
        "hash": "9136766017543359037",
        "name": "Sicilian: Najdorf, 6.f4 e5"
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    "B93l": {
        "eco": "B93l",
        "fen": "rnb1kb1r/1pq2ppp/p2p1n2/4p3/4PP2/2N2N2/PPP3PP/R1BQKB1R w KQkq - 2 8",
        "hash": "483280875939413491",
        "name": "Sicilian: Najdorf, 6.f4 e5 7.Nf3 Qc7"
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    "B93m": {
        "eco": "B93m",
        "fen": "rnb1kb1r/1pq2ppp/p2p1n2/4p3/P3PP2/2N2N2/1PP3PP/R1BQKB1R b KQkq a3 0 8",
        "hash": "7889615542825805885",
        "name": "Sicilian: Najdorf, 6.f4 e5 7.Nf3 Qc7 8.a4"
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    "B93n": {
        "eco": "B93n",
        "fen": "r1bqkb1r/1p1n1ppp/p2p1n2/4p3/4PP2/2N2N2/PPP3PP/R1BQKB1R w KQkq - 2 8",
        "hash": "3695398219048034110",
        "name": "Sicilian: Najdorf, 6.f4 e5 7.Nf3 Nbd7"
    },
    "B93o": {
        "eco": "B93o",
        "fen": "r1bqkb1r/1p1n1ppp/p2p1n2/4p3/4PP2/2NB1N2/PPP3PP/R1BQK2R b KQkq - 3 8",
        "hash": "7369314764305521997",
        "name": "Sicilian: Najdorf, 6.f4 e5 7.Nf3 Nbd7 8.Bd3"
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    "B93p": {
        "eco": "B93p",
        "fen": "r1bqkb1r/1p1n1ppp/p2p1n2/4p3/P3PP2/2N2N2/1PP3PP/R1BQKB1R b KQkq a3 0 8",
        "hash": "6377607200796035824",
        "name": "Sicilian: Najdorf, 6.f4 e5 7.Nf3 Nbd7 8.a4"
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    "B93q": {
        "eco": "B93q",
        "fen": "r1b1kb1r/1pqn1ppp/p2p1n2/4p3/P3PP2/2N2N2/1PP3PP/R1BQKB1R w KQkq - 1 9",
        "hash": "6818151683036579313",
        "name": "Sicilian: Najdorf, 6.f4 e5 7.Nf3 Nbd7 8.a4 Qc7"
    },
    "B93r": {
        "eco": "B93r",
        "fen": "r1bqk2r/1p1nbppp/p2p1n2/4p3/P3PP2/2N2N2/1PP3PP/R1BQKB1R w KQkq - 1 9",
        "hash": "5498257541064320609",
        "name": "Sicilian: Najdorf, 6.f4 e5 7.Nf3 Nbd7 8.a4 Be7"
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    "B93s": {
        "eco": "B93s",
        "fen": "r1bqk2r/1p1nbppp/p2p1n2/4p3/P3PP2/2NB1N2/1PP3PP/R1BQK2R b KQkq - 2 9",
        "hash": "1819486927636702226",
        "name": "Sicilian: Najdorf, 6.f4 e5 7.Nf3 Nbd7 8.a4 Be7 9.Bd3"
    },
    "B93t": {
        "eco": "B93t",
        "fen": "r1bq1rk1/1p2bppp/p2p1n2/2n1p3/P3PP2/2NB1N2/1PP3PP/R1BQ1RK1 w - - 5 11",
        "hash": "5610237246739501987",
        "name": "Sicilian: Najdorf, 6.f4 e5 7.Nf3 Nbd7 8.a4 Be7 9.Bd3 O-O 10.O-O Nc5"
    },
    "B93u": {
        "eco": "B93u",
        "fen": "r1bq1rk1/1p1nbppp/p2p1n2/8/P3Pp2/2NB1N2/1PP3PP/R1BQ1RK1 w - - 0 11",
        "hash": "9518271663509442877",
        "name": "Sicilian: Najdorf, 6.f4 e5 7.Nf3 Nbd7 8.a4 Be7 9.Bd3 O-O 10.O-O exf4"
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    "B94a": {
        "eco": "B94a",
        "fen": "rnbqkb1r/1p2pppp/p2p1n2/6B1/3NP3/2N5/PPP2PPP/R2QKB1R b KQkq - 1 6",
        "hash": "14985853353466418250",
        "name": "Sicilian: Najdorf, 6.Bg5"
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    "B94b": {
        "eco": "B94b",
        "fen": "rnbqkb1r/4pppp/p2p1n2/1p4B1/3NP3/2N5/PPP2PPP/R2QKB1R w KQkq b6 0 7",
        "hash": "12681037229751789943",
        "name": "Sicilian: Najdorf, 6.Bg5 b5"
    },
    "B94c": {
        "eco": "B94c",
        "fen": "rnbqkb1r/1p3ppp/p2p1n2/4p1B1/3NP3/2N5/PPP2PPP/R2QKB1R w KQkq e6 0 7",
        "hash": "5008137421830990972",
        "name": "Sicilian: Najdorf, 6.Bg5 e5"
    },
    "B94d": {
        "eco": "B94d",
        "fen": "r1bqkb1r/1p1npppp/p2p1n2/6B1/3NP3/2N5/PPP2PPP/R2QKB1R w KQkq - 2 7",
        "hash": "18166123847531542918",
        "name": "Sicilian: Najdorf, 6.Bg5 Nbd7"
    },
    "B94e": {
        "eco": "B94e",
        "fen": "r1bqkb1r/1p1npppp/p2p1n2/6B1/3NPP2/2N5/PPP3PP/R2QKB1R b KQkq f3 0 7",
        "hash": "75844763127874575",
        "name": "Sicilian: Najdorf, 6.Bg5 Nbd7 7.f4"
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    "B94f": {
        "eco": "B94f",
        "fen": "r1bqkb1r/3npppp/p2p1n2/1p4B1/3NPP2/2N5/PPP3PP/R2QKB1R w KQkq b6 0 8",
        "hash": "6992153417076586802",
        "name": "Sicilian: Najdorf, 6.Bg5 Nbd7 7.f4 b5"
    },
    "B94g": {
        "eco": "B94g",
        "fen": "r1bqkb1r/1p1npppp/p2p1n2/6B1/2BNP3/2N5/PPP2PPP/R2QK2R b KQkq - 3 7",
        "hash": "11504653383132606240",
        "name": "Sicilian: Najdorf, 6.Bg5 Nbd7 7.Bc4"
    },
    "B94h": {
        "eco": "B94h",
        "fen": "r1bqkb1r/1p1n1ppp/p2ppn2/6B1/2BNP3/2N5/PPP2PPP/R2QK2R w KQkq - 0 8",
        "hash": "16852275729700749170",
        "name": "Sicilian: Najdorf, 6.Bg5 Nbd7 7.Bc4 e6"
    },
    "B94i": {
        "eco": "B94i",
        "fen": "r1bqkb1r/1p1n1ppp/p2ppn2/6B1/2BNP3/2N5/PPP2PPP/R2Q1RK1 b kq - 1 8",
        "hash": "10928604935269131362",
        "name": "Sicilian: Najdorf, 6.Bg5 Nbd7 7.Bc4 e6 8.O-O"
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    "B94j": {
        "eco": "B94j",
        "fen": "r1b1kb1r/1p1npppp/p2p1n2/q5B1/2BNP3/2N5/PPP2PPP/R2QK2R w KQkq - 4 8",
        "hash": "5105718684436876975",
        "name": "Sicilian: Najdorf, 6.Bg5 Nbd7 7.Bc4 Qa5"
    },
    "B94k": {
        "eco": "B94k",
        "fen": "r1b1kb1r/1p1n1ppp/p2ppn2/q5B1/2BNP3/2N5/PPPQ1PPP/2KR3R b kq - 1 9",
        "hash": "2349137972149227205",
        "name": "Sicilian: Najdorf, 6.Bg5 Nbd7 7.Bc4 Qa5 8.Qd2 e6 9.O-O-O"
    },
    "B95a": {
        "eco": "B95a",
        "fen": "rnbqkb1r/1p3ppp/p2ppn2/6B1/3NP3/2N5/PPP2PPP/R2QKB1R w KQkq - 0 7",
        "hash": "13371046594381923352",
        "name": "Sicilian: Najdorf, 6...e6"
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    "B95b": {
        "eco": "B95b",
        "fen": "rnbqkb1r/1p3ppp/p2ppn2/6B1/3NP3/2NB4/PPP2PPP/R2QK2R b KQkq - 1 7",
        "hash": "17042220957656417899",
        "name": "Sicilian: Najdorf, 6...e6 7.Bd3"
    },
    "B95c": {
        "eco": "B95c",
        "fen": "rnbqkb1r/1p3ppp/p2ppn2/6B1/3NP3/2N5/PPP1BPPP/R2QK2R b KQkq - 1 7",
        "hash": "14559860457766751931",
        "name": "Sicilian: Najdorf, 6...e6 7.Be2"
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    "B95d": {
        "eco": "B95d",
        "fen": "rnbqkb1r/1p3ppp/p2ppn2/6B1/3NP3/2N5/PPP1QPPP/R3KB1R b KQkq - 1 7",
        "hash": "3425285667525009308",
        "name": "Sicilian: Najdorf, 6...e6 7.Qe2"
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    "B95e": {
        "eco": "B95e",
        "fen": "rnbqkb1r/1p3ppp/p2ppn2/6B1/3NP3/2N5/PPPQ1PPP/R3KB1R b KQkq - 1 7",
        "hash": "10491082036329913272",
        "name": "Sicilian: Najdorf, 6...e6 7.Qd2"
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    "B95f": {
        "eco": "B95f",
        "fen": "rnbqk2r/1p2bppp/p2ppn2/6B1/3NP3/2N5/PPPQ1PPP/R3KB1R w KQkq - 2 8",
        "hash": "9609481388785317673",
        "name": "Sicilian: Najdorf, 6...e6 7.Qd2 Be7"
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    "B95g": {
        "eco": "B95g",
        "fen": "rnbqk2r/1p2bppp/p2ppn2/6B1/3NP3/2N5/PPPQ1PPP/2KR1B1R b kq - 3 8",
        "hash": "13652373424115595441",
        "name": "Sicilian: Najdorf, 6...e6 7.Qd2 Be7 8.O-O-O"
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    "B95h": {
        "eco": "B95h",
        "fen": "rnbqkb1r/1p3ppp/p2ppn2/6B1/3NP3/2NQ4/PPP2PPP/R3KB1R b KQkq - 1 7",
        "hash": "1866791267113260399",
        "name": "Sicilian: Najdorf, 6...e6 7.Qd3"
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    "B95i": {
        "eco": "B95i",
        "fen": "r1bqkb1r/1p3ppp/p1nppn2/6B1/3NP3/2NQ4/PPP2PPP/R3KB1R w KQkq - 2 8",
        "hash": "12827927559216296044",
        "name": "Sicilian: Najdorf, 6...e6 7.Qd3 Nc6"
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    "B95j": {
        "eco": "B95j",
        "fen": "rnbqkb1r/1p3ppp/p2ppn2/6B1/3NP3/2N2Q2/PPP2PPP/R3KB1R b KQkq - 1 7",
        "hash": "265144187281314467",
        "name": "Sicilian: Najdorf, 6...e6 7.Qf3"
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    "B95k": {
        "eco": "B95k",
        "fen": "r1bqkb1r/1p1n1ppp/p2ppn2/6B1/3NP3/2N2Q2/PPP2PPP/R3KB1R w KQkq - 2 8",
        "hash": "3480860738275344239",
        "name": "Sicilian: Najdorf, 6...e6 7.Qf3 Nbd7"
    },
    "B95l": {
        "eco": "B95l",
        "fen": "rnbqk2r/1p2bppp/p2ppn2/6B1/3NP3/2N2Q2/PPP2PPP/R3KB1R w KQkq - 2 8",
        "hash": "1684778179786587698",
        "name": "Sicilian: Najdorf, 6...e6 7.Qf3 Be7"
    },
    "B95m": {
        "eco": "B95m",
        "fen": "r1bqk2r/1p1nbppp/p2ppn2/6B1/3NP3/2N2Q2/PPP2PPP/2KR1B1R w kq - 4 9",
        "hash": "2067071598200413286",
        "name": "Sicilian: Najdorf, 6...e6 7.Qf3 Be7 8.O-O-O Nbd7"
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    "B95n": {
        "eco": "B95n",
        "fen": "rnbqkb1r/1p3pp1/p2ppn1p/6B1/3NP3/2N2Q2/PPP2PPP/R3KB1R w KQkq - 0 8",
        "hash": "10473877798475652022",
        "name": "Sicilian: Najdorf, 6...e6 7.Qf3 h6"
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    "B96a": {
        "eco": "B96a",
        "fen": "rnbqkb1r/1p3ppp/p2ppn2/6B1/3NPP2/2N5/PPP3PP/R2QKB1R b KQkq f3 0 7",
        "hash": "4943260268173326737",
        "name": "Sicilian: Najdorf, 7.f4"
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    "B96b": {
        "eco": "B96b",
        "fen": "rnbqkb1r/1p3pp1/p2ppn1p/6B1/3NPP2/2N5/PPP3PP/R2QKB1R w KQkq - 0 8",
        "hash": "15451487909669089412",
        "name": "Sicilian: Najdorf, 7.f4 h6"
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    "B96c": {
        "eco": "B96c",
        "fen": "r1bqkb1r/1p3ppp/p1nppn2/6B1/3NPP2/2N5/PPP3PP/R2QKB1R w KQkq - 1 8",
        "hash": "17254457750412614802",
        "name": "Sicilian: Najdorf, 7.f4 Nc6"
    },
    "B96d": {
        "eco": "B96d",
        "fen": "r1bqkb1r/1p3ppp/p1Nppn2/6B1/4PP2/2N5/PPP3PP/R2QKB1R b KQkq - 0 8",
        "hash": "11814799690594014631",
        "name": "Sicilian: Najdorf, 7.f4 Nc6 8.Nxc6"
    },
    "B96e": {
        "eco": "B96e",
        "fen": "rn1qkb1r/1p1b1ppp/p2ppn2/6B1/3NPP2/2N5/PPP3PP/R2QKB1R w KQkq - 1 8",
        "hash": "11986334081091578272",
        "name": "Sicilian: Najdorf, 7.f4 Bd7"
    },
    "B96f": {
        "eco": "B96f",
        "fen": "rnb1kb1r/1pq2ppp/p2ppn2/6B1/3NPP2/2N5/PPP3PP/R2QKB1R w KQkq - 1 8",
        "hash": "4793732315682354832",
        "name": "Sicilian: Najdorf, 7.f4 Qc7"
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    "B96g": {
        "eco": "B96g",
        "fen": "rnb1kb1r/1pq2ppp/p2ppn2/6B1/3NPP2/2N2Q2/PPP3PP/R3KB1R b KQkq - 2 8",
        "hash": "17916648729192161323",
        "name": "Sicilian: Najdorf, 7.f4 Qc7 8.Qf3"
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    "B96h": {
        "eco": "B96h",
        "fen": "rnb1kb1r/2q2ppp/p2ppn2/1p4B1/3NPP2/2N2Q2/PPP3PP/R3KB1R w KQkq b6 0 9",
        "hash": "10998022296242642198",
        "name": "Sicilian: Najdorf, 7.f4 Qc7 8.Qf3 b5"
    },
    "B96i": {
        "eco": "B96i",
        "fen": "r1bqkb1r/1p1n1ppp/p2ppn2/6B1/3NPP2/2N5/PPP3PP/R2QKB1R w KQkq - 1 8",
        "hash": "8609341350664279133",
        "name": "Sicilian: Najdorf, 7.f4 Nbd7"
    },
    "B96j": {
        "eco": "B96j",
        "fen": "r1bqkb1r/1p1n1ppp/p2ppn2/6B1/3NPP2/2N2Q2/PPP3PP/R3KB1R b KQkq - 2 8",
        "hash": "14796855212535464678",
        "name": "Sicilian: Najdorf, 7.f4 Nbd7 8.Qf3"
    },
    "B96k": {
        "eco": "B96k",
        "fen": "r1b1kb1r/2qn1ppp/p2ppn2/1p4B1/3NPP2/2N2Q2/PPP3PP/2KR1B1R w kq b6 0 10",
        "hash": "10623689690342276930",
        "name": "Sicilian: Najdorf, 7.f4 Nbd7 8.Qf3 Qc7 9.O-O-O b5"
    },
    "B96l": {
        "eco": "B96l",
        "fen": "r1b1kb1r/2qn1ppp/p2ppn2/1p4B1/3NPP2/2NB1Q2/PPP3PP/2KR3R b kq - 1 10",
        "hash": "14295354161478532401",
        "name": "Sicilian: Najdorf, 7.f4 Nbd7 8.Qf3 Qc7 9.O-O-O b5 10.Bd3"
    },
    "B96m": {
        "eco": "B96m",
        "fen": "r1b1kb1r/2qn1ppp/p2ppn2/1p2P1B1/3N1P2/2N2Q2/PPP3PP/2KR1B1R b kq - 0 10",
        "hash": "17444688215541455142",
        "name": "Sicilian: Najdorf, 7.f4 Nbd7 8.Qf3 Qc7 9.O-O-O b5 10.e5"
    },
    "B96n": {
        "eco": "B96n",
        "fen": "rnbqkb1r/5ppp/p2ppn2/1p4B1/3NPP2/2N5/PPP3PP/R2QKB1R w KQkq b6 0 8",
        "hash": "2638431053419136172",
        "name": "Sicilian: Najdorf, Polugaevsky Variation"
    },
    "B96o": {
        "eco": "B96o",
        "fen": "rnb1kb1r/2q2ppp/p3pn2/1p2P1B1/8/2N2N2/PPP3PP/R2QKB1R b KQkq - 2 10",
        "hash": "10026750600475520795",
        "name": "Sicilian: Najdorf, Polugaevsky, 10.Nf3"
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    "B96p": {
        "eco": "B96p",
        "fen": "rnb1kb1r/2q2ppp/p3pn2/1B2P1B1/3N4/2N5/PPP3PP/R2QK2R b KQkq - 0 10",
        "hash": "15148394975820647446",
        "name": "Sicilian: Najdorf, Polugaevsky, 10.Bxb5+"
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    "B96q": {
        "eco": "B96q",
        "fen": "rnb1kb1r/2q2ppp/p3pP2/1p4B1/3N4/2N5/PPP3PP/R2QKB1R b KQkq - 0 10",
        "hash": "16259499881593095601",
        "name": "Sicilian: Najdorf, Polugaevsky, 10.exf6"
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    "B96r": {
        "eco": "B96r",
        "fen": "rnb1kb1r/5ppp/p3pP2/1p2q1B1/3N4/2N5/PPP1B1PP/R2QK2R b KQkq - 2 11",
        "hash": "7757100644617886922",
        "name": "Sicilian: Najdorf, Polugaevsky, 10.exf6 Qe5+ 11.Be2"
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    "B96s": {
        "eco": "B96s",
        "fen": "rnb1kb1r/5ppp/p3pP2/1p4q1/3N4/2NQ4/PPP1B1PP/R3K2R b KQkq - 1 12",
        "hash": "1097104921274442335",
        "name": "Sicilian: Najdorf, Polugaevsky, 10.exf6 Qe5+ 11.Be2 Qxg5 12.Qd3"
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    "B96t": {
        "eco": "B96t",
        "fen": "rnb1kb1r/2q2ppp/p3pn2/1p2P1B1/3N4/2N5/PPP1Q1PP/R3KB1R b KQkq - 2 10",
        "hash": "7153749903672069200",
        "name": "Sicilian: Najdorf, Polugaevsky, 10.Qe2"
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    "B96u": {
        "eco": "B96u",
        "fen": "r1b1kb1r/2qn1ppp/p1n1p3/1p2P1B1/3N4/2N5/PPP1Q1PP/2KR1B1R w kq - 5 12",
        "hash": "702746008351960894",
        "name": "Sicilian: Najdorf, Polugaevsky, 10.Qe2 Nfd7 11.O-O-O Nc6"
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    "B96v": {
        "eco": "B96v",
        "fen": "rn2kb1r/1bqn1ppp/p3p3/1p2P1B1/3N4/2N5/PPP1Q1PP/2KR1B1R w kq - 5 12",
        "hash": "1350296636783814054",
        "name": "Sicilian: Najdorf, Polugaevsky, 10.Qe2 Nfd7 11.O-O-O Bb7"
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    "B96w": {
        "eco": "B96w",
        "fen": "rn2kb1r/1bqn1ppp/p3p3/1p2P1B1/3N2Q1/2N5/PPP3PP/2KR1B1R b kq - 6 12",
        "hash": "3015138532183499046",
        "name": "Sicilian: Najdorf, Polugaevsky, 10.Qe2 Nfd7 11.O-O-O Bb7 12.Qg4"
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    "B97a": {
        "eco": "B97a",
        "fen": "rnb1kb1r/1p3ppp/pq1ppn2/6B1/3NPP2/2N5/PPP3PP/R2QKB1R w KQkq - 1 8",
        "hash": "9468258918230536011",
        "name": "Sicilian: Najdorf, Poisoned Pawn"
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    "B97b": {
        "eco": "B97b",
        "fen": "rnb1kb1r/1p3ppp/pq1ppB2/8/3NPP2/2N5/PPP3PP/R2QKB1R b KQkq - 0 8",
        "hash": "2763251408111169963",
        "name": "Sicilian: Najdorf, Poisoned Pawn, 8.Bxf6"
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    "B97c": {
        "eco": "B97c",
        "fen": "rnb1kb1r/1p3ppp/pq1ppn2/6B1/3NPP2/P1N5/1PP3PP/R2QKB1R b KQkq - 0 8",
        "hash": "5258570990849532171",
        "name": "Sicilian: Najdorf, Poisoned Pawn, 8.a3"
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    "B97d": {
        "eco": "B97d",
        "fen": "rnb1kb1r/1p3ppp/pq1ppn2/6B1/3NPP2/2NQ4/PPP3PP/R3KB1R b KQkq - 2 8",
        "hash": "2522490362024214076",
        "name": "Sicilian: Najdorf, Poisoned Pawn, 8.Qd3"
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    "B97e": {
        "eco": "B97e",
        "fen": "rnb1kb1r/1p3ppp/pq1ppn2/6B1/4PP2/1NN5/PPP3PP/R2QKB1R b KQkq - 2 8",
        "hash": "1663864004647971201",
        "name": "Sicilian: Najdorf, Poisoned Pawn, 8.Nb3"
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    "B97f": {
        "eco": "B97f",
        "fen": "rnb1k2r/1p2bppp/pq1ppn2/6B1/4PP2/1NN5/PPP3PP/R2QKB1R w KQkq - 3 9",
        "hash": "277895589305402640",
        "name": "Sicilian: Najdorf, Poisoned Pawn, 8.Nb3 Be7"
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    "B97g": {
        "eco": "B97g",
        "fen": "r1b1kb1r/1p1n1ppp/pq1ppn2/6B1/4PP2/1NN2Q2/PPP3PP/R3KB1R b KQkq - 4 9",
        "hash": "11445400451156824822",
        "name": "Sicilian: Najdorf, Poisoned Pawn, 8.Nb3 Nbd7 9.Qf3"
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    "B97h": {
        "eco": "B97h",
        "fen": "r1b1k2r/1p1nbppp/pq1ppn2/6B1/4PP2/1NN2Q2/PPP3PP/R3KB1R w KQkq - 5 10",
        "hash": "9951346582956277351",
        "name": "Sicilian: Najdorf, Poisoned Pawn, 8.Nb3 Nbd7 9.Qf3 Be7"
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    "B97i": {
        "eco": "B97i",
        "fen": "rnb1kb1r/1p3ppp/pq1ppn2/6B1/3NPP2/2N5/PPPQ2PP/R3KB1R b KQkq - 2 8",
        "hash": "12357398943770341611",
        "name": "Sicilian: Najdorf, Poisoned Pawn, 8.Qd2"
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    "B97j": {
        "eco": "B97j",
        "fen": "rnb1kb1r/1p3ppp/p2ppn2/6B1/4PP2/1NN5/PqPQ2PP/R3KB1R b KQkq - 1 9",
        "hash": "12438293708373133305",
        "name": "Sicilian: Najdorf, Poisoned Pawn, 9.Nb3"
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    "B97k": {
        "eco": "B97k",
        "fen": "rnb1kb1r/1p3ppp/p2ppn2/6B1/4PP2/qNN5/P1PQ2PP/R3KB1R w KQkq - 2 10",
        "hash": "9164517323664724892",
        "name": "Sicilian: Najdorf, Poisoned Pawn, 9.Nb3 Qa3"
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    "B97l": {
        "eco": "B97l",
        "fen": "rnb1kb1r/1p3ppp/p2ppB2/8/4PP2/qNN5/P1PQ2PP/R3KB1R b KQkq - 0 10",
        "hash": "15713602408526204284",
        "name": "Sicilian: Najdorf, Poisoned Pawn, 9.Nb3 Qa3 10.Bxf6"
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    "B97m": {
        "eco": "B97m",
        "fen": "rnb1kb1r/1p3ppp/p2ppn2/6B1/3NPP2/2N5/PqPQ2PP/1R2KB1R b Kkq - 1 9",
        "hash": "7764114016090096679",
        "name": "Sicilian: Najdorf, Poisoned Pawn, 9.Rb1"
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    "B97n": {
        "eco": "B97n",
        "fen": "rnb1kb1r/1p3ppp/p2ppn2/6B1/3NPP2/q1N5/P1PQB1PP/1R2K2R b Kkq - 3 10",
        "hash": "14667233051104664289",
        "name": "Sicilian: Najdorf, Poisoned Pawn, 10.Be2"
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    "B97o": {
        "eco": "B97o",
        "fen": "rnb1kb1r/1p3ppp/p2ppB2/8/3NPP2/q1N5/P1PQ2PP/1R2KB1R b Kkq - 0 10",
        "hash": "2104289983095197346",
        "name": "Sicilian: Najdorf, Poisoned Pawn, 10.Bxf6"
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    "B97p": {
        "eco": "B97p",
        "fen": "rnb1kb1r/1p3ppp/p2ppn2/4P1B1/3N1P2/q1N5/P1PQ2PP/1R2KB1R b Kkq - 0 10",
        "hash": "15669694068933080614",
        "name": "Sicilian: Najdorf, Poisoned Pawn, 10.e5"
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    "B97q": {
        "eco": "B97q",
        "fen": "rnb1kb1r/1p3ppp/p2ppn2/5PB1/3NP3/q1N5/P1PQ2PP/1R2KB1R b Kkq - 0 10",
        "hash": "15243634675003695521",
        "name": "Sicilian: Najdorf, Poisoned Pawn, 10.f5"
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    "B97r": {
        "eco": "B97r",
        "fen": "r1b1kb1r/6pp/p1pppn2/6B1/4P3/q1N5/P1PQ2PP/1R2KB1R w Kkq - 0 13",
        "hash": "1615006675093416172",
        "name": "Sicilian: Najdorf, Poisoned Pawn, Main Line"
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    "B97s": {
        "eco": "B97s",
        "fen": "r1b1kb1r/6pp/p1pppn2/6B1/4P3/q1N5/P1PQB1PP/1R2K2R b Kkq - 1 13",
        "hash": "7343449023031190095",
        "name": "Sicilian: Najdorf, Poisoned Pawn, Main Line, Timman's 13.Be2"
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    "B97t": {
        "eco": "B97t",
        "fen": "r1b1kb1r/6pp/p1pppn2/4P1B1/8/q1N5/P1PQ2PP/1R2KB1R b Kkq - 0 13",
        "hash": "8579567291204488840",
        "name": "Sicilian: Najdorf, Poisoned Pawn, Main Line, 13.e5"
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    "B97u": {
        "eco": "B97u",
        "fen": "r1b1kb1r/6pp/p1p1pn2/4p1B1/8/q1N5/P1PQ2PP/1R2KB1R w Kkq - 0 14",
        "hash": "5563561895438548993",
        "name": "Sicilian: Najdorf, Poisoned Pawn, Main Line, 13.e5 dxe5"
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    "B97v": {
        "eco": "B97v",
        "fen": "r1b1kb1r/7p/p1p1pp2/4p3/4N3/8/q1PQ2PP/1R2KB1R w Kkq - 0 16",
        "hash": "14323988554765801410",
        "name": "Sicilian: Najdorf, Poisoned Pawn, Main Line, 13.e5 dxe5: 15.Ne4 Qxa2"
    },
    "B97w": {
        "eco": "B97w",
        "fen": "r1b1k2r/4b2p/p1p1pp2/4p3/4N3/q7/P1PQ2PP/1R2KB1R w Kkq - 2 16",
        "hash": "1149364492744136881",
        "name": "Sicilian: Najdorf, Poisoned Pawn, Main Line, 13.e5 dxe5: 15.Ne4 Be7"
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    "B97x": {
        "eco": "B97x",
        "fen": "r1b1k2r/4b3/p1p1pp2/4p2p/q1P1N3/1R6/P2QB1PP/4K2R b Kkq c3 0 18",
        "hash": "4314699259309260595",
        "name": "Sicilian: Najdorf, Poisoned Pawn, Main Line, 13.e5 dxe5 with 18.c4"
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    "B97y": {
        "eco": "B97y",
        "fen": "r1b1k2r/4b3/p1p1pN2/4p2p/q7/1R6/P1PQB1PP/4K2R b Kkq - 0 18",
        "hash": "10320638098973912319",
        "name": "Sicilian: Najdorf, Poisoned Pawn, Main Line, 13.e5 dxe5 with 18.Nxf6+"
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    "B98a": {
        "eco": "B98a",
        "fen": "rnbqk2r/1p2bppp/p2ppn2/6B1/3NPP2/2N5/PPP3PP/R2QKB1R w KQkq - 1 8",
        "hash": "5788690032641332480",
        "name": "Sicilian: Najdorf, 7...Be7"
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    "B98b": {
        "eco": "B98b",
        "fen": "rnbqk2r/1p2bppp/p2ppn2/6B1/3NPP2/2N2Q2/PPP3PP/R3KB1R b KQkq - 2 8",
        "hash": "16895242839897867195",
        "name": "Sicilian: Najdorf, 7...Be7 8.Qf3"
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    "B98c": {
        "eco": "B98c",
        "fen": "rnb1k2r/1p2bppp/p2ppn2/q5B1/3NPP2/2N2Q2/PPP3PP/R3KB1R w KQkq - 3 9",
        "hash": "3676169310312669748",
        "name": "Sicilian: Najdorf, Danner Variation"
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    "B98d": {
        "eco": "B98d",
        "fen": "rn2k2r/1p1bbppp/p2ppn2/q5B1/3NPP2/2N2Q2/PPP3PP/2KR1B1R w kq - 5 10",
        "hash": "16854963443132399005",
        "name": "Sicilian: Najdorf, Danner, 9.O-O-O Bd7"
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    "B98e": {
        "eco": "B98e",
        "fen": "rn2k2r/1p1bbppp/p2ppn2/q3P1B1/3N1P2/2N2Q2/PPP3PP/2KR1B1R b kq - 0 10",
        "hash": "9840872121835183097",
        "name": "Sicilian: Najdorf, Danner, 9.O-O-O Bd7 10.e5"
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    "B98f": {
        "eco": "B98f",
        "fen": "rnbqk2r/1p2bpp1/p2ppn1p/6B1/3NPP2/2N2Q2/PPP3PP/R3KB1R w KQkq - 0 9",
        "hash": "8683149811496995502",
        "name": "Sicilian: Najdorf, 7...Be7 8.Qf3 h6"
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    "B98g": {
        "eco": "B98g",
        "fen": "rnb1k2r/1pq1bpp1/p2ppn1p/8/3NPP1B/2N2Q2/PPP3PP/R3KB1R w KQkq - 2 10",
        "hash": "2598833570939283252",
        "name": "Sicilian: Najdorf, Browne Variation"
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    "B98h": {
        "eco": "B98h",
        "fen": "r1b1k2r/1pqnbpp1/p2ppn1p/8/3NPP1B/2N2Q2/PPP3PP/2KR1B1R w kq - 4 11",
        "hash": "3449430912649446752",
        "name": "Sicilian: Najdorf, Browne, 10.O-O-O Nbd7"
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    "B98i": {
        "eco": "B98i",
        "fen": "r1b1k2r/1pqnbpp1/p2ppn1p/8/3NPP1B/2N3Q1/PPP3PP/2KR1B1R b kq - 5 11",
        "hash": "8074045786063461423",
        "name": "Sicilian: Najdorf, Browne, 10.O-O-O Nbd7 11.Qg3"
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    "B98j": {
        "eco": "B98j",
        "fen": "r1b1k2r/1pqnbpp1/p2ppn1p/8/3NPP1B/2N2Q2/PPP1B1PP/2KR3R b kq - 5 11",
        "hash": "6655850597274456003",
        "name": "Sicilian: Najdorf, Browne, 10.O-O-O Nbd7 11.Be2"
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    "B98k": {
        "eco": "B98k",
        "fen": "rnbqk2r/1p2bp2/p2ppn1p/6p1/3NPP1B/2N2Q2/PPP3PP/R3KB1R w KQkq g6 0 10",
        "hash": "11694764809245267903",
        "name": "Sicilian: Najdorf, Gothenburg (Argentine) Variation"
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    "B98l": {
        "eco": "B98l",
        "fen": "rnbqk2r/1p1nbp2/p2pN2p/6P1/4P2B/2N2Q2/PPP3PP/R3KB1R b KQkq - 0 11",
        "hash": "10927905058710188362",
        "name": "Sicilian: Najdorf, Gothenburg, 11.Nxe6"
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    "B98m": {
        "eco": "B98m",
        "fen": "rnbqk2r/1p1nbp2/p2pp2p/6PQ/3NP2B/2N5/PPP3PP/R3KB1R b KQkq - 2 11",
        "hash": "3671308484056838155",
        "name": "Sicilian: Najdorf, Gothenburg, 11.Qh5"
    },
    "B98n": {
        "eco": "B98n",
        "fen": "rnb1k2r/1pq1bppp/p2ppn2/6B1/3NPP2/2N2Q2/PPP3PP/R3KB1R w KQkq - 3 9",
        "hash": "17035088759015099578",
        "name": "Sicilian: Najdorf, 8...Qc7"
    },
    "B98o": {
        "eco": "B98o",
        "fen": "rnb1k2r/2q1bppp/p2ppn2/1p4B1/3NPP2/2N2Q2/PPP3PP/2KR1B1R w kq b6 0 10",
        "hash": "12988915476441071135",
        "name": "Sicilian: Najdorf, 8...Qc7 9.O-O-O b5"
    },
    "B98p": {
        "eco": "B98p",
        "fen": "r1b1k2r/1pq1bppp/p1nppn2/6B1/3NPP2/2N2Q2/PPP3PP/2KR1B1R w kq - 5 10",
        "hash": "9198698142116865569",
        "name": "Sicilian: Najdorf, 8...Qc7 9.O-O-O Nc6"
    },
    "B98q": {
        "eco": "B98q",
        "fen": "r1b1k2r/1pq1bppp/p1Nppn2/6B1/4PP2/2N2Q2/PPP3PP/2KR1B1R b kq - 0 10",
        "hash": "3687018069416210196",
        "name": "Sicilian: Najdorf, 8...Qc7 9.O-O-O Nc6 10.Nxc6"
    },
    "B99a": {
        "eco": "B99a",
        "fen": "r1b1k2r/1pqnbppp/p2ppn2/6B1/3NPP2/2N2Q2/PPP3PP/2KR1B1R w kq - 5 10",
        "hash": "16692297928577036014",
        "name": "Sicilian: Najdorf, Main Line"
    },
    "B99b": {
        "eco": "B99b",
        "fen": "r1b1k2r/1pqnbppp/p2ppn2/6B1/3NPP2/2N3Q1/PPP3PP/2KR1B1R b kq - 6 10",
        "hash": "13291501804000327585",
        "name": "Sicilian: Najdorf, Main Line, 10.Qg3"
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        "name": "French: Tarrasch, Open, 4.Ngf3 Nc6"
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        "hash": "5706400061218943100",
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        "hash": "15949794103381945417",
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        "hash": "13509578696193189923",
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        "hash": "8335900494493330924",
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        "hash": "393477610236486250",
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        "hash": "17805860590467385080",
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        "hash": "1423382238700933920",
        "name": "French: Tarrasch, Open, 4.exd5 exd5"
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        "hash": "10084641312140404128",
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        "hash": "2158729409830321700",
        "name": "French: Tarrasch, Open, 4.exd5 exd5 5.Bb5+ Nc6 6.Qe2+"
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        "hash": "14042207589770514578",
        "name": "French: Tarrasch, Open, 4.exd5 exd5 5.Bb5+ Bd7"
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        "hash": "6114056804970564374",
        "name": "French: Tarrasch, Open, 4.exd5 exd5 5.Bb5+ Bd7 6.Qe2+"
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        "hash": "4617612020869441415",
        "name": "French: Tarrasch, Open, 4.exd5 exd5 5.Bb5+ Bd7 6.Qe2+ Be7"
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        "hash": "14457736145984352797",
        "name": "French: Tarrasch, Open, 4.exd5 exd5 5.Ngf3"
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        "hash": "1897074956837587649",
        "name": "French: Tarrasch, Open, 4.exd5 exd5 5.Ngf3 a6"
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        "hash": "7625509402035699810",
        "name": "French: Tarrasch, Open, 4.exd5 exd5 5.Ngf3 a6 6.Be2"
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        "hash": "10613302726190347147",
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        "eco": "C11v",
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        "hash": "4014042396301424965",
        "name": "French: Burn, 6.Bxf6 gxf6 7.Nf3"
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    "C11w": {
        "eco": "C11w",
        "fen": "rnbqk2r/p1p1bp1p/1p2pp2/8/3PN3/5N2/PPP2PPP/R2QKB1R w KQkq - 0 8",
        "hash": "6691776588174118622",
        "name": "French: Burn, 6.Bxf6 gxf6 7.Nf3 b6"
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    "C11x": {
        "eco": "C11x",
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        "hash": "10905739386538936045",
        "name": "French: Burn, 6.Bxf6 gxf6 7.Nf3 f5"
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    "C12a": {
        "eco": "C12a",
        "fen": "rnbqk2r/ppp2ppp/4pn2/3p2B1/1b1PP3/2N5/PPP2PPP/R2QKBNR w KQkq - 4 5",
        "hash": "1978899623154770437",
        "name": "French: MacCutcheon"
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    "C12b": {
        "eco": "C12b",
        "fen": "rnbqk2r/ppp2ppp/4pn2/3P2B1/1b1P4/2N5/PPP2PPP/R2QKBNR b KQkq - 0 5",
        "hash": "4371162305688510467",
        "name": "French: MacCutcheon, 5.exd5"
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    "C12c": {
        "eco": "C12c",
        "fen": "rnb1k2r/ppp2ppp/4pn2/3q2B1/1b1P4/2N5/PPP2PPP/R2QKBNR w KQkq - 0 6",
        "hash": "13296224652460711369",
        "name": "French: MacCutcheon, 5.exd5 Qxd5"
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    "C12d": {
        "eco": "C12d",
        "fen": "rnbqk2r/ppp2ppp/4pn2/3pP1B1/1b1P4/2N5/PPP2PPP/R2QKBNR b KQkq - 0 5",
        "hash": "8795354450913215585",
        "name": "French: MacCutcheon, Advance Variation"
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    "C12e": {
        "eco": "C12e",
        "fen": "rnbqk2r/ppp2pp1/4pP1p/3p2B1/1b1P4/2N5/PPP2PPP/R2QKBNR b KQkq - 0 6",
        "hash": "18166612001575558929",
        "name": "French: MacCutcheon, Chigorin Variation"
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    "C12f": {
        "eco": "C12f",
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        "hash": "3360384705350063804",
        "name": "French: MacCutcheon, Olland (Dutch) Variation"
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    "C12g": {
        "eco": "C12g",
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        "hash": "12859821892952862703",
        "name": "French: MacCutcheon, Bernstein Variation"
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        "eco": "C12h",
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        "hash": "11924653664013535291",
        "name": "French: MacCutcheon, Janowski Variation"
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        "eco": "C12i",
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        "hash": "18444773795618961585",
        "name": "French: MacCutcheon, 6.Bd2"
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        "hash": "16050964367712545467",
        "name": "French: MacCutcheon, Lasker Variation"
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        "name": "French: MacCutcheon, Lasker, 7.bxc3"
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        "eco": "C12l",
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        "hash": "18061456560085225996",
        "name": "French: MacCutcheon, 8.Qg4"
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        "hash": "10114561139316745399",
        "name": "French: MacCutcheon, 8.Qg4 Kf8 9.Bd3"
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        "eco": "C12n",
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        "hash": "1374579025682939975",
        "name": "French: MacCutcheon, 8.Qg4 g6"
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        "eco": "C12o",
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        "hash": "5052719878239683124",
        "name": "French: MacCutcheon, 8.Qg4 g6 9.Bd3"
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        "hash": "6175918871564340178",
        "name": "French: MacCutcheon, Main Line"
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        "eco": "C12q",
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        "hash": "10291193026942282479",
        "name": "French: MacCutcheon, Main Line, 11.Nf3"
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        "hash": "2683144180171968492",
        "name": "French: MacCutcheon, Main Line, 11.Nf3 Nc6"
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        "eco": "C13a",
        "fen": "rnbqk2r/ppp1bppp/4pn2/3p2B1/3PP3/2N5/PPP2PPP/R2QKBNR w KQkq - 4 5",
        "hash": "14338172935910917814",
        "name": "French: Classical"
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        "eco": "C13b",
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        "hash": "7188982508406003798",
        "name": "French: Classical, Anderssen Variation"
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        "eco": "C13c",
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        "hash": "6811374486606600018",
        "name": "French: Classical, Anderssen-Richter Variation"
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        "eco": "C13d",
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        "hash": "12070344832489955538",
        "name": "French: Classical, 5.e5"
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        "hash": "15745091419995870096",
        "name": "French: Classical, Frankfurt Variation"
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        "hash": "11351945406822001960",
        "name": "French: Classical, Tartakower Variation"
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        "hash": "1067225591006656180",
        "name": "French: Classical, Tartakower, 6.Bxe7"
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        "hash": "6828997497403549991",
        "name": "French: Classical, 5.e5 Nfd7"
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        "hash": "14008135631616233561",
        "name": "French: Chatard-Alekhine Attack"
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        "hash": "1023411585908033318",
        "name": "French: Chatard-Alekhine, Teichmann Variation"
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        "hash": "14469512087399020978",
        "name": "French: Chatard-Alekhine, Spielmann Variation"
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        "hash": "5892133956159700086",
        "name": "French: Chatard-Alekhine, 6...Bxg5"
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        "hash": "15782338631512896092",
        "name": "French: Chatard-Alekhine, 6...Bxg5 7.hxg5 Qxg5 8.Nh3 Qe7 9.Nf4"
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        "hash": "1193758262380112005",
        "name": "French: Chatard-Alekhine, Maroczy Variation"
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        "hash": "15458768176748027559",
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        "hash": "2600605092184677156",
        "name": "French: Chatard-Alekhine, Breyer Variation"
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        "hash": "13209777591056433336",
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        "hash": "6587378425806421729",
        "name": "French: Chatard-Alekhine, Breyer, 7.Bxe7 Kxe7"
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        "hash": "3260638949772522974",
        "name": "French: Classical, 6.Bxe7 Qxe7"
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        "hash": "8717402588625579987",
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        "hash": "8668792095776880557",
        "name": "French: Classical, Tarrasch Variation"
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        "hash": "15678814394644751140",
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        "hash": "385148300217002622",
        "name": "French: Classical, Rubinstein Variation"
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        "hash": "15012292873623128151",
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        "hash": "189592258621714571",
        "name": "French: Classical, Steinitz, 7...a6"
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        "hash": "4590483581875182283",
        "name": "French: Classical, Steinitz, 7...a6 8.Nf3 c5"
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        "hash": "4636331227697286567",
        "name": "French: Classical, Steinitz, 7...a6 8.Nf3 c5"
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        "hash": "15780205603533005244",
        "name": "French: Classical, Steinitz, 7...O-O"
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        "hash": "16711644610788051964",
        "name": "French: Classical, Steinitz, 7...O-O 8.Nf3 c5"
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        "hash": "10955167635310615696",
        "name": "French: Classical, Steinitz, 8.Nf3 c5 9.dxc5"
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        "hash": "14984601538032178268",
        "name": "French: Classical, Steinitz, 9.Qd2"
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        "hash": "2016774281444451891",
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        "hash": "1814194026518737442",
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        "hash": "9710347368368175195",
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        "hash": "11609469732215110237",
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        "hash": "15238043504670974550",
        "name": "French: Winawer, 4.Qg4"
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        "hash": "2784836141545253164",
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        "hash": "15262616509918951976",
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        "hash": "3872644292031557973",
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        "hash": "1965024985059854968",
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        "hash": "12632403227914703711",
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        "hash": "3638805597610342658",
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        "hash": "7607026845615011988",
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        "hash": "5574933373408212507",
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        "hash": "9334075619679442032",
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        "hash": "1378825630873974594",
        "name": "Vienna: 3.Bc4 Nc6 4.d3 Bb4 5.Ne2"
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        "hash": "6137212497766991718",
        "name": "Vienna Gambit"
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        "fen": "rnbqkb1r/ppp2ppp/3p1n2/4p3/4PP2/2N5/PPPP2PP/R1BQKBNR w KQkq - 0 4",
        "hash": "7823126531819245067",
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        "hash": "15006522086982748480",
        "name": "Vienna Gambit: 3...d5"
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        "fen": "rnbqkb1r/ppp2ppp/5n2/3Pp3/5P2/2N5/PPPP2PP/R1BQKBNR b KQkq - 0 4",
        "hash": "17842956168373619526",
        "name": "Vienna Gambit: 3...d5 4.exd5"
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    "C29e": {
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        "fen": "rnbqkb1r/ppp2ppp/5n2/3pp3/4PP2/2NP4/PPP3PP/R1BQKBNR b KQkq - 0 4",
        "hash": "9143753658628420244",
        "name": "Vienna Gambit: Steinitz Variation"
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        "hash": "6692042247778991572",
        "name": "Vienna Gambit: 4.fxe5"
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        "hash": "5750363881038078227",
        "name": "Vienna Gambit: Oxford Variation"
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        "hash": "9695137832614832433",
        "name": "Vienna Gambit: Oxford, 5...Bb4"
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        "fen": "rnbqkb1r/ppp2ppp/8/3pP3/8/2nP4/PPP3PP/R1BQKBNR w KQkq - 0 6",
        "hash": "18249950103731967774",
        "name": "Vienna Gambit: Oxford, 5...Nxc3"
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        "fen": "rnbqkb1r/ppp2ppp/8/4P3/3p4/2PP4/P1P3PP/R1BQKBNR w KQkq - 0 7",
        "hash": "11302628095554143712",
        "name": "Vienna Gambit: Oxford, 5...Nxc3 6.bxc3 d4"
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        "eco": "C29k",
        "fen": "rnbqkb1r/ppp2ppp/8/3pP3/4n3/2N2Q2/PPPP2PP/R1B1KBNR b KQkq - 1 5",
        "hash": "6578595350346402940",
        "name": "Vienna Gambit: Paulsen Attack"
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        "eco": "C29l",
        "fen": "rnbqkb1r/ppp3pp/8/3pPp2/4n3/2N2Q2/PPPP2PP/R1B1KBNR w KQkq f6 0 6",
        "hash": "2288102930969254608",
        "name": "Vienna Gambit: Paulsen Attack, Bardeleben Variation"
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        "fen": "rnbqkb1r/ppp2ppp/8/3pP3/8/2n2Q2/PPPP2PP/R1B1KBNR w KQkq - 0 6",
        "hash": "16844131157307161201",
        "name": "Vienna Gambit: Paulsen Attack, 5...Nxc3"
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        "eco": "C29n",
        "fen": "rnbqkb1r/ppp2ppp/8/3pP3/4n3/2N2N2/PPPP2PP/R1BQKB1R b KQkq - 1 5",
        "hash": "4183081372978789370",
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        "fen": "rn1qkb1r/ppp2ppp/8/3pP3/4n1b1/2N2N2/PPPP2PP/R1BQKB1R w KQkq - 2 6",
        "hash": "4097853906954040592",
        "name": "Vienna Gambit: 5.Nf3 Bg4"
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        "fen": "rnbqk2r/ppp2ppp/8/3pP3/1b2n3/2N2N2/PPPP2PP/R1BQKB1R w KQkq - 2 6",
        "hash": "17531426339519984600",
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        "hash": "10511562860384329465",
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        "hash": "3369037455672973163",
        "name": "Vienna Gambit: Breyer Variation"
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        "hash": "13314811574445919471",
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        "hash": "742543099918891746",
        "name": "Vienna Gambit: Breyer, 6.Qe2 Nxc3"
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        "hash": "17677453271937418281",
        "name": "King's Gambit"
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        "hash": "1379015976990969684",
        "name": "King's Gambit: Mafia Defence"
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        "fen": "rnbqkbnr/ppp2ppp/3p4/4p3/4PP2/8/PPPP2PP/RNBQKBNR w KQkq - 0 3",
        "hash": "14765183829305838916",
        "name": "King's Gambit: 2...d6"
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        "fen": "rnbqkb1r/pppp1ppp/5n2/4p3/4PP2/8/PPPP2PP/RNBQKBNR w KQkq - 1 3",
        "hash": "12591179326086432191",
        "name": "King's Gambit: Wade Variation"
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        "fen": "rnb1kbnr/pppp1ppp/5q2/4p3/4PP2/8/PPPP2PP/RNBQKBNR w KQkq - 1 3",
        "hash": "17467901442211497924",
        "name": "King's Gambit: Norwald Variation"
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        "fen": "rnb1kbnr/pppp1ppp/8/4p3/4PP1q/8/PPPP2PP/RNBQKBNR w KQkq - 1 3",
        "hash": "816641234114383063",
        "name": "King's Gambit: Keene Defence"
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        "fen": "r1bqkbnr/pppp1ppp/2n5/4p3/4PP2/8/PPPP2PP/RNBQKBNR w KQkq - 1 3",
        "hash": "6827235987739124010",
        "name": "King's Gambit: 2...Nc6"
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        "hash": "1275851967026589129",
        "name": "King's Gambit: Adelaide-Wahls Variation"
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        "fen": "r1bqkbnr/pppp2pp/2n5/4pP2/5P2/5N2/PPPP2PP/RNBQKB1R b KQkq - 0 4",
        "hash": "18264498741272462350",
        "name": "King's Gambit: Adelaide-Wahls, 4.exf5"
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        "hash": "6363492045068660394",
        "name": "King's Gambit: Classical KGD"
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        "hash": "13443756001824687866",
        "name": "KGD: Classical, 3.Nf3 d6"
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        "hash": "4685652887650157603",
        "name": "KGD: Classical, 3.Nf3 d6 4.Nc3"
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        "hash": "8744662971765117715",
        "name": "KGD: Classical, 3.Nf3 d6 4.Nc3 Nf6 5.Bc4"
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    "C30n": {
        "eco": "C30n",
        "fen": "rnbqk1nr/ppp2ppp/3p4/2b1p3/4PP2/2P2N2/PP1P2PP/RNBQKB1R b KQkq - 0 4",
        "hash": "14720904078837762428",
        "name": "KGD: Classical, 4.c3"
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        "fen": "rnbqk1nr/ppp2ppp/1b1p4/4p3/4PP2/2P2N2/PP1P2PP/RNBQKB1R w KQkq - 1 5",
        "hash": "3220073775066882153",
        "name": "KGD: Classical, 4.c3 Bb6"
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        "fen": "rnbqk2r/ppp2ppp/3p1n2/2b1p3/4PP2/2P2N2/PP1P2PP/RNBQKB1R w KQkq - 1 5",
        "hash": "10927171640945215722",
        "name": "KGD: Classical, 4.c3 Nf6"
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        "fen": "rnbqk2r/ppp2ppp/3p1n2/2b1p3/3PPP2/2P2N2/PP4PP/RNBQKB1R b KQkq d3 0 5",
        "hash": "5949311304912741800",
        "name": "KGD: Classical, 4.c3 Nf6 5.d4"
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    "C30r": {
        "eco": "C30r",
        "fen": "rnbqk1nr/ppp3pp/3p4/2b1pp2/4PP2/2P2N2/PP1P2PP/RNBQKB1R w KQkq f6 0 5",
        "hash": "6351288074473923746",
        "name": "KGD: Classical Countergambit"
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    "C31": {
        "eco": "C31",
        "fen": "rnbqkbnr/ppp2ppp/8/3pp3/4PP2/8/PPPP2PP/RNBQKBNR w KQkq d6 0 3",
        "hash": "8086437448154991119",
        "name": "KGD: Falkbeer Countergambit"
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    "C32": {
        "eco": "C32",
        "fen": "rnbqkb1r/ppp2ppp/5n2/3P4/4pP2/3P4/PPP3PP/RNBQKBNR w KQkq - 1 5",
        "hash": "10208266178442407357",
        "name": "KGD: Falkbeer, 4.d3 Nf6"
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    "C33": {
        "eco": "C33",
        "fen": "rnbqkbnr/pppp1ppp/8/8/4Pp2/8/PPPP2PP/RNBQKBNR w KQkq - 0 3",
        "hash": "2078644914092671997",
        "name": "King's Gambit Accepted (KGA)"
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    "C34": {
        "eco": "C34",
        "fen": "rnbqkbnr/pppp1ppp/8/8/4Pp2/5N2/PPPP2PP/RNBQKB1R b KQkq - 1 3",
        "hash": "14392440628058055360",
        "name": "KGA: King's Knight Gambit"
    },
    "C35": {
        "eco": "C35",
        "fen": "rnbqk1nr/ppppbppp/8/8/4Pp2/5N2/PPPP2PP/RNBQKB1R w KQkq - 2 4",
        "hash": "15235760625082125905",
        "name": "KGA: Cunningham Defence"
    },
    "C36": {
        "eco": "C36",
        "fen": "rnbqkbnr/ppp2ppp/8/3p4/4Pp2/5N2/PPPP2PP/RNBQKB1R w KQkq d6 0 4",
        "hash": "4816065901379497190",
        "name": "KGA: Scandinavian (Abbazia) Variation"
    },
    "C37": {
        "eco": "C37",
        "fen": "rnbqkbnr/pppp1p1p/8/6p1/4Pp2/5N2/PPPP2PP/RNBQKB1R w KQkq g6 0 4",
        "hash": "5188085897001180490",
        "name": "KGA: 3.Nf3 g5"
    },
    "C38": {
        "eco": "C38",
        "fen": "rnbqk1nr/pppp1pbp/8/6p1/2B1Pp2/5N2/PPPP2PP/RNBQK2R w KQkq - 2 5",
        "hash": "10732149639755857990",
        "name": "KGA: 3.Nf3 g5 4.Bc4 Bg7"
    },
    "C39": {
        "eco": "C39",
        "fen": "rnbqkbnr/pppp1p1p/8/6p1/4Pp1P/5N2/PPPP2P1/RNBQKB1R b KQkq h3 0 4",
        "hash": "15806601748439065652",
        "name": "KGA: 3.Nf3 g5 4.h4"
    },
    "C40a": {
        "eco": "C40a",
        "fen": "rnbqkbnr/pppp1ppp/8/4p3/4P3/5N2/PPPP1PPP/RNBQKB1R b KQkq - 1 2",
        "hash": "15213300192948443293",
        "name": "Open Game"
    },
    "C40b": {
        "eco": "C40b",
        "fen": "rnb1kbnr/pppp1ppp/5q2/4p3/4P3/5N2/PPPP1PPP/RNBQKB1R w KQkq - 2 3",
        "hash": "15283214011470682992",
        "name": "Open Game: Greco Defence"
    },
    "C40c": {
        "eco": "C40c",
        "fen": "rnb1kbnr/ppppqppp/8/4p3/4P3/5N2/PPPP1PPP/RNBQKB1R w KQkq - 2 3",
        "hash": "5251092285754341111",
        "name": "Open Game: Gunderam Defence"
    },
    "C40d": {
        "eco": "C40d",
        "fen": "rnb1kbnr/ppppqppp/8/4p3/4P3/2N2N2/PPPP1PPP/R1BQKB1R b KQkq - 3 3",
        "hash": "12918778107637068846",
        "name": "Open Game: Gunderam Defence, 3.Nc3"
    },
    "C40e": {
        "eco": "C40e",
        "fen": "rnbqkbnr/ppp2ppp/8/3pp3/4P3/5N2/PPPP1PPP/RNBQKB1R w KQkq d6 0 3",
        "hash": "6217885557868369595",
        "name": "Elephant Gambit"
    },
    "C40f": {
        "eco": "C40f",
        "fen": "rnbqkbnr/ppp2ppp/8/3pN3/4P3/8/PPPP1PPP/RNBQKB1R b KQkq - 0 3",
        "hash": "16720080922994029453",
        "name": "Elephant Gambit: 3.Nxe5"
    },
    "C40g": {
        "eco": "C40g",
        "fen": "rnbqkbnr/ppp2ppp/8/3Pp3/8/5N2/PPPP1PPP/RNBQKB1R b KQkq - 0 3",
        "hash": "8184544333801313469",
        "name": "Elephant Gambit: 3.exd5"
    },
    "C40h": {
        "eco": "C40h",
        "fen": "rnbqk1nr/ppp2ppp/3b4/3Pp3/8/5N2/PPPP1PPP/RNBQKB1R w KQkq - 1 4",
        "hash": "15406033910881256857",
        "name": "Elephant Gambit: Maroczy"
    },
    "C40i": {
        "eco": "C40i",
        "fen": "rnbqkbnr/ppp2ppp/8/3P4/4p3/5N2/PPPP1PPP/RNBQKB1R w KQkq - 0 4",
        "hash": "6814908151895952203",
        "name": "Elephant Gambit: Paulsen"
    },
    "C40j": {
        "eco": "C40j",
        "fen": "rnbqkbnr/pppp2pp/8/4pp2/4P3/5N2/PPPP1PPP/RNBQKB1R w KQkq f6 0 3",
        "hash": "5138353693252056387",
        "name": "Latvian Gambit"
    },
    "C40k": {
        "eco": "C40k",
        "fen": "rnbqkbnr/pppp2pp/8/4pp2/4P3/3P1N2/PPP2PPP/RNBQKB1R b KQkq - 0 3",
        "hash": "16855806415322369687",
        "name": "Latvian Gambit: 3.d3"
    },
    "C40l": {
        "eco": "C40l",
        "fen": "rnbqkbnr/pppp2pp/8/4pp2/4P3/2N2N2/PPPP1PPP/R1BQKB1R b KQkq - 1 3",
        "hash": "13607628299084265370",
        "name": "Latvian Gambit: 3.Nc3"
    },
    "C40m": {
        "eco": "C40m",
        "fen": "rnbqkbnr/pppp2pp/8/4pp2/3PP3/5N2/PPP2PPP/RNBQKB1R b KQkq d3 0 3",
        "hash": "9401887506335782913",
        "name": "Latvian Gambit: 3.d4"
    },
    "C40n": {
        "eco": "C40n",
        "fen": "rnbqkbnr/pppp2pp/8/4pP2/8/5N2/PPPP1PPP/RNBQKB1R b KQkq - 0 3",
        "hash": "12358771533762387076",
        "name": "Latvian Gambit: 3.exf5"
    },
    "C40o": {
        "eco": "C40o",
        "fen": "rnbqkbnr/pppp2pp/8/4pp2/2B1P3/5N2/PPPP1PPP/RNBQK2R b KQkq - 1 3",
        "hash": "2665195696870204389",
        "name": "Latvian Gambit: 3.Bc4"
    },
    "C40p": {
        "eco": "C40p",
        "fen": "rnbqkbnr/pppp2pp/8/4p3/2B1p3/5N2/PPPP1PPP/RNBQK2R w KQkq - 0 4",
        "hash": "16640525040114736174",
        "name": "Latvian Gambit: 3.Bc4 fxe4"
    },
    "C40q": {
        "eco": "C40q",
        "fen": "rnb1kbnr/pppp2pp/8/4N1q1/2B1p3/8/PPPP1PPP/RNBQK2R w KQkq - 1 5",
        "hash": "1896462434714683624",
        "name": "Latvian Gambit: Poisoned Pawn Variation"
    },
    "C40r": {
        "eco": "C40r",
        "fen": "rnbqkbnr/pppp2pp/8/4Np2/4P3/8/PPPP1PPP/RNBQKB1R b KQkq - 0 3",
        "hash": "17945979809784156277",
        "name": "Latvian Gambit: 3.Nxe5"
    },
    "C40s": {
        "eco": "C40s",
        "fen": "r1bqkbnr/pppp2pp/2n5/4Np2/4P3/8/PPPP1PPP/RNBQKB1R w KQkq - 1 4",
        "hash": "5972113319062271350",
        "name": "Latvian Gambit: 3.Nxe5 Nc6"
    },
    "C40t": {
        "eco": "C40t",
        "fen": "rnb1kbnr/pppp2pp/5q2/4Np2/4P3/8/PPPP1PPP/RNBQKB1R w KQkq - 1 4",
        "hash": "18317389045294764952",
        "name": "Latvian Gambit: 3.Nxe5 Qf6"
    },
    "C40u": {
        "eco": "C40u",
        "fen": "rnb1kbnr/pppp2pp/5q2/4Np2/3PP3/8/PPP2PPP/RNBQKB1R b KQkq d3 0 4",
        "hash": "4251784953532268250",
        "name": "Latvian Gambit: 3.Nxe5 Qf6 4.d4"
    },
    "C40v": {
        "eco": "C40v",
        "fen": "rnb1kbnr/ppp3pp/3p1q2/8/2NPp3/8/PPP1BPPP/RNBQK2R b KQkq - 1 6",
        "hash": "18047420649698112786",
        "name": "Latvian Gambit: 3.Nxe5 Qf6 4.d4 d6 5.Nc4 fxe4 6.Be2"
    },
    "C40w": {
        "eco": "C40w",
        "fen": "rnb1kbnr/ppp3pp/3p1q2/8/3Pp3/4N3/PPP2PPP/RNBQKB1R b KQkq - 1 6",
        "hash": "2331020027700877189",
        "name": "Latvian Gambit: Nimzowitsch Variation"
    },
    "C40x": {
        "eco": "C40x",
        "fen": "rnb1kbnr/ppp3pp/3p1q2/8/2NPp3/2N5/PPP2PPP/R1BQKB1R b KQkq - 1 6",
        "hash": "8242372566598679912",
        "name": "Latvian Gambit: 3.Nxe5 Qf6 4.d4 d6 5.Nc4 fxe4 6.Nc3"
    },
    "C41a": {
        "eco": "C41a",
        "fen": "rnbqkbnr/ppp2ppp/3p4/4p3/4P3/5N2/PPPP1PPP/RNBQKB1R w KQkq - 0 3",
        "hash": "16905080946651992560",
        "name": "Philidor Defence"
    },
    "C41b": {
        "eco": "C41b",
        "fen": "rnbqkbnr/ppp2ppp/3p4/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R b KQkq - 1 3",
        "hash": "9883533824722814806",
        "name": "Philidor: 3.Bc4"
    },
    "C41c": {
        "eco": "C41c",
        "fen": "rnbqkbnr/ppp2ppp/3p4/4p3/3PP3/5N2/PPP2PPP/RNBQKB1R b KQkq d3 0 3",
        "hash": "3436182914828844210",
        "name": "Philidor: 3.d4"
    },
    "C41d": {
        "eco": "C41d",
        "fen": "rnbqkbnr/ppp3pp/3p4/4pp2/3PP3/5N2/PPP2PPP/RNBQKB1R w KQkq f6 0 4",
        "hash": "13528990020591653228",
        "name": "Philidor: Philidor Countergambit"
    },
    "C41e": {
        "eco": "C41e",
        "fen": "rnbqkbnr/ppp3pp/3p4/4Pp2/4P3/5N2/PPP2PPP/RNBQKB1R b KQkq - 0 4",
        "hash": "2836528878181033500",
        "name": "Philidor: Philidor Countergambit, 4.dxe5"
    },
    "C41f": {
        "eco": "C41f",
        "fen": "r1bqkbnr/pppn1ppp/3p4/4p3/3PP3/5N2/PPP2PPP/RNBQKB1R w KQkq - 1 4",
        "hash": "2039213063597150590",
        "name": "Philidor: Hanham Variation"
    },
    "C41g": {
        "eco": "C41g",
        "fen": "r1bqkbnr/pp1n1ppp/2pp4/4p3/2BPP3/5N2/PPP2PPP/RNBQK2R w KQkq - 0 5",
        "hash": "17115337461347144803",
        "name": "Philidor: Hanham, 4.Bc4 c6"
    },
    "C41h": {
        "eco": "C41h",
        "fen": "rnbqkbnr/ppp2ppp/3p4/8/3pP3/5N2/PPP2PPP/RNBQKB1R w KQkq - 0 4",
        "hash": "13029420206032201895",
        "name": "Philidor: 3...exd4"
    },
    "C41i": {
        "eco": "C41i",
        "fen": "rnbqkbnr/ppp2ppp/3p4/8/3QP3/5N2/PPP2PPP/RNB1KB1R b KQkq - 0 4",
        "hash": "14512528059800307610",
        "name": "Philidor: Morphy Variation"
    },
    "C41j": {
        "eco": "C41j",
        "fen": "rnbqkbnr/ppp2ppp/3p4/8/3NP3/8/PPP2PPP/RNBQKB1R b KQkq - 0 4",
        "hash": "15223734610017467017",
        "name": "Philidor: 3...exd4 4.Nxd4"
    },
    "C41k": {
        "eco": "C41k",
        "fen": "rnbqkb1r/ppp2ppp/3p1n2/8/3NP3/8/PPP2PPP/RNBQKB1R w KQkq - 1 5",
        "hash": "9848146488601049887",
        "name": "Philidor: 3...exd4 4.Nxd4 Nf6"
    },
    "C41l": {
        "eco": "C41l",
        "fen": "rnbqk2r/ppp1bppp/3p1n2/8/2BNP3/2N5/PPP2PPP/R1BQK2R b KQkq - 4 6",
        "hash": "307223789322208241",
        "name": "Philidor: 3...exd4 4.Nxd4 Nf6 5.Nc3 Be7 6.Bc4"
    },
    "C41m": {
        "eco": "C41m",
        "fen": "rnbqk2r/ppp1bppp/3p1n2/8/3NP3/2N5/PPP1BPPP/R1BQK2R b KQkq - 4 6",
        "hash": "1472762538142670836",
        "name": "Philidor: Antoshin Variation"
    },
    "C41n": {
        "eco": "C41n",
        "fen": "rnbqkbnr/ppp2p1p/3p2p1/8/3NP3/8/PPP2PPP/RNBQKB1R w KQkq - 0 5",
        "hash": "4247389930724436162",
        "name": "Philidor: Larsen Variation"
    },
    "C41o": {
        "eco": "C41o",
        "fen": "rnbqkb1r/ppp2ppp/3p1n2/4p3/3PP3/5N2/PPP2PPP/RNBQKB1R w KQkq - 1 4",
        "hash": "8377243767393615140",
        "name": "Philidor: Nimzowitsch Variation"
    },
    "C41p": {
        "eco": "C41p",
        "fen": "rnbqkb1r/ppp2ppp/3p1n2/4P3/4P3/5N2/PPP2PPP/RNBQKB1R b KQkq - 0 4",
        "hash": "16779301225419786836",
        "name": "Philidor: Exchange Variation"
    },
    "C41q": {
        "eco": "C41q",
        "fen": "rnbqkb1r/ppp2ppp/3p1n2/4p3/3PP3/2N2N2/PPP2PPP/R1BQKB1R b KQkq - 2 4",
        "hash": "10364729362061426685",
        "name": "Philidor: Nimzowitsch Variation"
    },
    "C41r": {
        "eco": "C41r",
        "fen": "r1bqkb1r/pppn1ppp/3p1n2/4p3/3PP3/2N2N2/PPP2PPP/R1BQKB1R w KQkq - 3 5",
        "hash": "13561905476598469169",
        "name": "Philidor: Improved Hanham"
    },
    "C41s": {
        "eco": "C41s",
        "fen": "r1bqkb1r/pppn1ppp/3p1n2/4p3/2BPP3/2N2N2/PPP2PPP/R1BQK2R b KQkq - 4 5",
        "hash": "16106601822391649431",
        "name": "Philidor: Improved Hanham, 5.Bc4"
    },
    "C41t": {
        "eco": "C41t",
        "fen": "r1bqk2r/pppnbppp/3p1n2/4p3/2BPP3/2N2N2/PPP2PPP/R1BQ1RK1 b kq - 6 6",
        "hash": "13060207879461024534",
        "name": "Philidor: Improved Hanham 6.O-O"
    },
    "C41u": {
        "eco": "C41u",
        "fen": "r1bq1rk1/pppnbppp/3p1n2/4p3/2BPP3/2N2N2/PPP2PPP/R1BQ1RK1 w - - 7 7",
        "hash": "13805714739953785597",
        "name": "Philidor: Improved Hanham, Main Line"
    },
    "C41v": {
        "eco": "C41v",
        "fen": "r1bq1rk1/pppnbppp/3p1n2/4p3/P1BPP3/2N2N2/1PP2PPP/R1BQ1RK1 b - a3 0 7",
        "hash": "15302878064116109107",
        "name": "Philidor: Improved Hanham, 7.a4"
    },
    "C41w": {
        "eco": "C41w",
        "fen": "r1bq1rk1/pppnbppp/3p1n2/4p3/2BPP3/2N2N2/PPP1QPPP/R1B2RK1 b - - 8 7",
        "hash": "2995262412046041465",
        "name": "Philidor: Improved Hanham, 7.Qe2"
    },
    "C41x": {
        "eco": "C41x",
        "fen": "r1bq1rk1/pppnbppp/3p1n2/4p3/2BPP3/2N2N2/PPP2PPP/R1BQR1K1 b - - 8 7",
        "hash": "4261477144745046505",
        "name": "Philidor: Improved Hanham, 7.Re1"
    },
    "C41y": {
        "eco": "C41y",
        "fen": "r1bq1rk1/1p1nbppp/2pp1n2/p3p3/P1BPP3/2N2N2/1PP2PPP/R1BQR1K1 w - a6 0 9",
        "hash": "4939015169783528204",
        "name": "Philidor: Improved Hanham, 7.Re1 c6 8.a4 a5"
    },
    "C41z": {
        "eco": "C41z",
        "fen": "r1bq1rk1/p2nbppp/1ppp1n2/4p3/P1BPP3/2N2N2/1PP2PPP/R1BQR1K1 w - - 0 9",
        "hash": "12247843688577351687",
        "name": "Philidor: Improved Hanham, 7.Re1 c6 8.a4 b6"
    },
    "C42a": {
        "eco": "C42a",
        "fen": "rnbqkb1r/pppp1ppp/5n2/4p3/4P3/5N2/PPPP1PPP/RNBQKB1R w KQkq - 2 3",
        "hash": "9857899207991007499",
        "name": "Russian Game (Petroff Defence)"
    },
    "C42b": {
        "eco": "C42b",
        "fen": "rnbqkb1r/pppp1ppp/5n2/4p3/4P3/3P1N2/PPP2PPP/RNBQKB1R b KQkq - 0 3",
        "hash": "2768175334744924895",
        "name": "Russian Game: 3.d3"
    },
    "C42c": {
        "eco": "C42c",
        "fen": "rnbqkb1r/pppp1ppp/5n2/4p3/4P3/2N2N2/PPPP1PPP/R1BQKB1R b KQkq - 3 3",
        "hash": "8311766651675220946",
        "name": "Russian-Three Knights Game"
    },
    "C42d": {
        "eco": "C42d",
        "fen": "rnbqk2r/pppp1ppp/5n2/4N3/1b2P3/2N5/PPPP1PPP/R1BQKB1R b KQkq - 0 4",
        "hash": "314071401338468038",
        "name": "Russian-Three Knights Game, 4.Nxe5"
    },
    "C42e": {
        "eco": "C42e",
        "fen": "rnbqkb1r/pppp1ppp/5n2/4p3/2B1P3/5N2/PPPP1PPP/RNBQK2R b KQkq - 3 3",
        "hash": "16968999559129419693",
        "name": "Russian Game: Italian Variation"
    },
    "C42f": {
        "eco": "C42f",
        "fen": "rnbqkb1r/pppp1ppp/8/4p3/2B1n3/2N2N2/PPPP1PPP/R1BQK2R b KQkq - 1 4",
        "hash": "12492327627645676135",
        "name": "Russian Game: Boden-Kieseritsky Gambit"
    },
    "C42g": {
        "eco": "C42g",
        "fen": "rnbqkb1r/pppp1ppp/5n2/4N3/4P3/8/PPPP1PPP/RNBQKB1R b KQkq - 0 3",
        "hash": "3931009027415620669",
        "name": "Russian Game: 3.Nxe5"
    },
    "C42h": {
        "eco": "C42h",
        "fen": "rnbqkb1r/ppp2Npp/3p1n2/8/4P3/8/PPPP1PPP/RNBQKB1R b KQkq - 0 4",
        "hash": "18145111275632565304",
        "name": "Russian Game: Cochrane Gambit"
    },
    "C42i": {
        "eco": "C42i",
        "fen": "rnbqkb1r/ppp2ppp/3p1n2/8/2N1P3/8/PPPP1PPP/RNBQKB1R b KQkq - 1 4",
        "hash": "5074037839292285597",
        "name": "Russian Game: Paulsen Attack"
    },
    "C42j": {
        "eco": "C42j",
        "fen": "rnbqkb1r/ppp2ppp/3p1n2/8/4P3/5N2/PPPP1PPP/RNBQKB1R b KQkq - 1 4",
        "hash": "15136587681141821478",
        "name": "Russian Game: 3.Nxe5 d6 4.Nf3"
    },
    "C42k": {
        "eco": "C42k",
        "fen": "rnbqkb1r/ppp2ppp/3p4/8/4n3/3P1N2/PPP2PPP/RNBQKB1R b KQkq - 0 5",
        "hash": "13915133016524721377",
        "name": "Russian Game: French Attack"
    },
    "C42l": {
        "eco": "C42l",
        "fen": "rnbqkb1r/ppp2ppp/3p4/8/2P1n3/5N2/PP1P1PPP/RNBQKB1R b KQkq c3 0 5",
        "hash": "16400745562692590642",
        "name": "Russian Game: Vienna/Kaufmann"
    },
    "C42m": {
        "eco": "C42m",
        "fen": "rnbqkb1r/ppp2ppp/3p4/8/4n3/2N2N2/PPPP1PPP/R1BQKB1R b KQkq - 1 5",
        "hash": "10677929950469043692",
        "name": "Russian Game: Nimzowitsch Attack"
    },
    "C42n": {
        "eco": "C42n",
        "fen": "rnbqkb1r/ppp2ppp/3p4/8/4n3/5N2/PPPPQPPP/RNB1KB1R b KQkq - 1 5",
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        "hash": "18304832135133711743",
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        "hash": "1015385342199689752",
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        "hash": "11130709217671602118",
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        "hash": "10051327942189333566",
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        "hash": "13688841305454170332",
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        "hash": "15363564668380841321",
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        "hash": "4986951600073511535",
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        "hash": "16728746525806590188",
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        "hash": "11453369419459229546",
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        "hash": "4689055884960126695",
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        "hash": "17037498911200243620",
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        "hash": "9823395862778683077",
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        "hash": "5055926909966849290",
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        "hash": "13769047279266061849",
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        "hash": "4936617192026594496",
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        "hash": "5368169678711972943",
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        "hash": "1944688136365447025",
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        "hash": "16061294381290035132",
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        "hash": "16902459632345936811",
        "name": "Scotch: Mieses Variation"
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        "hash": "12635844862913992951",
        "name": "Scotch: Mieses, 8.c4"
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        "hash": "6938880515911965193",
        "name": "Scotch: Mieses, 8.c4 Ba6"
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        "hash": "17072507663620944228",
        "name": "Scotch: Mieses, 8.c4 Ba6 9.b3"
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        "hash": "17009984879765634148",
        "name": "Scotch: 4.Nxd4 Bc5"
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        "hash": "8682556407983504046",
        "name": "Scotch: 4.Nxd4 Bc5 5.Nb3"
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        "hash": "10990343604722275259",
        "name": "Scotch: 4.Nxd4 Bc5 5.Nb3 Bb6"
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        "hash": "2430541204132609705",
        "name": "Scotch: 4.Nxd4 Bc5 5.Nb3 Bb6 6.a4 a6"
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        "fen": "r1bqk1nr/pppp1ppp/2N5/2b5/4P3/8/PPP2PPP/RNBQKB1R b KQkq - 0 5",
        "hash": "11568946446046999889",
        "name": "Scotch: 4.Nxd4 Bc5 5.Nxc6"
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        "hash": "10353200738363418908",
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        "hash": "6569759551487614491",
        "name": "Scotch: 4.Nxd4 Bc5 5.Nxc6 Qf6 6.Qd2 dxc6 7.Nc3"
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        "hash": "11459163839963604970",
        "name": "Scotch: 4.Nxd4 Bc5 5.Be3"
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        "hash": "7878299222988119633",
        "name": "Scotch: Blumenfeld Attack"
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        "hash": "15036104284411846716",
        "name": "Scotch: 4.Nxd4 Bc5 5.Be3 Qf6 6.c3 Nge7"
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        "hash": "12905430898565658266",
        "name": "Scotch: 4.Nxd4 Bc5 5.Be3 Qf6 6.c3 Nge7 7.Bc4"
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        "hash": "4847087392507829498",
        "name": "Scotch: 4.Nxd4 Bc5 5.Be3 Qf6 6.c3 Nge7 7.Bc4 Ne5"
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        "fen": "r1bqkbnr/pppp1ppp/2n5/4p3/4P3/2N2N2/PPPP1PPP/R1BQKB1R b KQkq - 3 3",
        "hash": "9465088315907768135",
        "name": "Three Knights Game"
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        "hash": "1672481660104987289",
        "name": "Three Knights: Winawer Defence"
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        "hash": "13465808846401943082",
        "name": "Three Knights: 3...d6"
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        "fen": "r1bqkbnr/ppp2ppp/2np4/4p3/3PP3/2N2N2/PPP2PPP/R1BQKB1R b KQkq d3 0 4",
        "hash": "9211275652690385768",
        "name": "Three Knights: 3...d6 4.d4"
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        "fen": "r1bqk1nr/pppp1ppp/2n5/2b1p3/4P3/2N2N2/PPPP1PPP/R1BQKB1R w KQkq - 4 4",
        "hash": "3334911087892174276",
        "name": "Three Knights: 3...Bc5"
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        "eco": "C46f",
        "fen": "r1bqk1nr/pppp1ppp/2n5/2b1N3/4P3/2N5/PPPP1PPP/R1BQKB1R b KQkq - 0 4",
        "hash": "10377435988724920562",
        "name": "Three Knights: 3...Bc5 4.Nxe5"
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        "eco": "C46g",
        "fen": "r1bqk1nr/pppp1ppp/2n5/4p3/1b2P3/2N2N2/PPPP1PPP/R1BQKB1R w KQkq - 4 4",
        "hash": "5340097811471284069",
        "name": "Three Knights: 3...Bb4"
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    "C46h": {
        "eco": "C46h",
        "fen": "r1bqk1nr/pppp1ppp/2n5/3Np3/1b2P3/5N2/PPPP1PPP/R1BQKB1R b KQkq - 5 4",
        "hash": "9948021146057656368",
        "name": "Three Knights: 3...Bb4 4.Nd5"
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    "C46i": {
        "eco": "C46i",
        "fen": "r1bqkbnr/pppp1p1p/2n3p1/4p3/4P3/2N2N2/PPPP1PPP/R1BQKB1R w KQkq - 0 4",
        "hash": "7705356561013435660",
        "name": "Three Knights: Steinitz Variation"
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        "eco": "C46j",
        "fen": "r1bqkbnr/pppp1p1p/2n3p1/4p3/3PP3/2N2N2/PPP2PPP/R1BQKB1R b KQkq d3 0 4",
        "hash": "12671936783943417934",
        "name": "Three Knights: Steinitz, 4.d4"
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        "eco": "C46k",
        "fen": "r1bqkbnr/pppp1p1p/2n3p1/3N4/3pP3/5N2/PPP2PPP/R1BQKB1R b KQkq - 1 5",
        "hash": "17631706836159507214",
        "name": "Three Knights: Steinitz, Rosenthal Variation"
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        "hash": "5994735866859079285",
        "name": "Three Knights: Steinitz, 4.d4 exd4 5.Nxd4"
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        "fen": "r1bqk2r/pppp1pbp/2n2np1/8/3NP3/2N1B3/PPP2PPP/R2QKB1R w KQkq - 3 7",
        "hash": "14657851390109046727",
        "name": "Three Knights: Steinitz, 4.d4 exd4 5.Nxd4 Bg7 6.Be3 Nf6"
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        "fen": "r1bqkb1r/pppp1ppp/2n2n2/4p3/4P3/2N2N2/PPPP1PPP/R1BQKB1R w KQkq - 4 4",
        "hash": "15615259024392175313",
        "name": "Four Knights Game"
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        "fen": "r1bqkb1r/pppp1ppp/2n2n2/4p3/4P3/P1N2N2/1PPP1PPP/R1BQKB1R b KQkq - 0 4",
        "hash": "1380558341248856209",
        "name": "Four Knights: Gunsberg Variation"
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    "C47c": {
        "eco": "C47c",
        "fen": "r1bqkb1r/pppp1ppp/2n2n2/4p3/4P3/2N2N2/PPPPBPPP/R1BQK2R b KQkq - 5 4",
        "hash": "12336494764604978290",
        "name": "Four Knights: Van der Wiel Variation"
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        "eco": "C47d",
        "fen": "r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/2N2N2/PPPP1PPP/R1BQK2R b KQkq - 5 4",
        "hash": "13476810165849712759",
        "name": "Four Knights: Italian Variation"
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    "C47e": {
        "eco": "C47e",
        "fen": "r1bqkb1r/pppp1ppp/2n2n2/4p3/4P3/2N2NP1/PPPP1P1P/R1BQKB1R b KQkq - 0 4",
        "hash": "17605186775537182441",
        "name": "Four Knights: Glek Variation"
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        "eco": "C47f",
        "fen": "r1bqkb1r/ppp2ppp/2n2n2/3pp3/4P3/2N2NP1/PPPP1P1P/R1BQKB1R w KQkq d6 0 5",
        "hash": "8158290567807641807",
        "name": "Four Knights: Glek, 4...d5"
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        "fen": "r1bqk2r/pppp1ppp/2n2n2/2b1p3/4P3/2N2NP1/PPPP1P1P/R1BQKB1R w KQkq - 1 5",
        "hash": "6435490225031384170",
        "name": "Four Knights: Glek, 4...Bc5"
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        "fen": "r1bqk2r/1pp2ppp/p1np1n2/2b1p3/4P3/2NP1NP1/PPP2PBP/R1BQK2R w KQkq - 0 7",
        "hash": "12202207943275011702",
        "name": "Four Knights: Glek, Main Line"
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        "eco": "C47i",
        "fen": "r1bqkb1r/pppp1ppp/2n2n2/4p3/3PP3/2N2N2/PPP2PPP/R1BQKB1R b KQkq d3 0 4",
        "hash": "2126161864446612371",
        "name": "Four Knights: Scotch Variation"
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        "eco": "C47j",
        "fen": "r1bqk2r/pppp1ppp/2n2n2/4p3/1b1PP3/2N2N2/PPP2PPP/R1BQKB1R w KQkq - 1 5",
        "hash": "15330479584301112241",
        "name": "Four Knights: Scotch, Bogoljubow"
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        "fen": "r1bqk2r/pppp1ppp/2n2n2/4N3/1b1PP3/2N5/PPP2PPP/R1BQKB1R b KQkq - 0 5",
        "hash": "7675040924522249863",
        "name": "Four Knights: Scotch, Krause Variation"
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        "eco": "C47l",
        "fen": "r1bqkb1r/pppp1ppp/2n2n2/8/3pP3/2N2N2/PPP2PPP/R1BQKB1R w KQkq - 0 5",
        "hash": "9727685523403278214",
        "name": "Four Knights: Scotch, 4...exd4"
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        "fen": "r1bqkb1r/pppp1ppp/2n5/3N4/3pn3/5N2/PPP2PPP/R1BQKB1R w KQkq - 0 6",
        "hash": "18112719058422947776",
        "name": "Four Knights: Belgrade Gambit, 5...Nxe4"
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    "C47n": {
        "eco": "C47n",
        "fen": "r1bqk2r/ppppbppp/2n2n2/3N4/3pP3/5N2/PPP2PPP/R1BQKB1R w KQkq - 2 6",
        "hash": "5919545970676421698",
        "name": "Four Knights: Belgrade Gambit, 5...Be7"
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    "C47o": {
        "eco": "C47o",
        "fen": "r1bqkb1r/pppp1ppp/2n2n2/8/3NP3/2N5/PPP2PPP/R1BQKB1R b KQkq - 0 5",
        "hash": "16243343854501631400",
        "name": "Four Knights: Scotch, 4...exd4 5.Nxd4"
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    "C47p": {
        "eco": "C47p",
        "fen": "r1bqkb1r/ppp2ppp/2np1n2/8/3NP3/2N5/PPP2PPP/R1BQKB1R w KQkq - 0 6",
        "hash": "15623379965563657413",
        "name": "Four Knights: Scotch, 4...exd4 5.Nxd4 d6"
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    "C47q": {
        "eco": "C47q",
        "fen": "r1bqk2r/pppp1ppp/2n2n2/2b5/3NP3/2N5/PPP2PPP/R1BQKB1R w KQkq - 1 6",
        "hash": "5509792917845901099",
        "name": "Four Knights: Scotch, 4...exd4 5.Nxd4 Bc5"
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    "C47r": {
        "eco": "C47r",
        "fen": "r1bqk2r/pppp1ppp/2n2n2/8/1b1NP3/2N5/PPP2PPP/R1BQKB1R w KQkq - 1 6",
        "hash": "2894295219877961098",
        "name": "Four Knights: Scotch, 4...exd4 5.Nxd4 Bb4"
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    "C47s": {
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        "fen": "r1bqk2r/p1pp1ppp/2p2n2/8/1b2P3/2N5/PPP2PPP/R1BQKB1R w KQkq - 0 7",
        "hash": "13348385767644241716",
        "name": "Four Knights: Scotch, 4...exd4 5.Nxd4 Bb4 6.Nxc6 bxc6"
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    "C47t": {
        "eco": "C47t",
        "fen": "r1bqk2r/p1p2ppp/2p2n2/3p4/1b2P3/2NB4/PPP2PPP/R1BQK2R w KQkq d6 0 8",
        "hash": "7591236724202935137",
        "name": "Four Knights: Scotch, Main Line, 7...d5"
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        "fen": "r1bq1rk1/p1p2ppp/5n2/3p4/1b6/2NB4/PPP2PPP/R1BQ1RK1 w - - 2 10",
        "hash": "5272393634219257382",
        "name": "Four Knights: Scotch, Main Line, 8.exd5 cxd5 9.O-O O-O"
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        "eco": "C47v",
        "fen": "r1bq1rk1/p4ppp/2p2n2/3p2B1/1b6/2NB4/PPP2PPP/R2Q1RK1 w - - 0 11",
        "hash": "2093035603298969173",
        "name": "Four Knights: Scotch, Main Line, 9.O-O O-O 10.Bg5 c6"
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        "eco": "C47w",
        "fen": "r1bq1rk1/p4ppp/2p2n2/3p2B1/Nb6/3B4/PPP2PPP/R2Q1RK1 b - - 1 11",
        "hash": "16041573106238203167",
        "name": "Four Knights: Scotch, Main Line, 10.Bg5 c6 11.Na4"
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        "fen": "r1bq1rk1/p4ppp/2p2n2/3p2B1/1b6/2NB1Q2/PPP2PPP/R4RK1 b - - 1 11",
        "hash": "12045316980549103854",
        "name": "Four Knights: Scotch, Main Line, 10.Bg5 c6 11.Qf3"
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        "fen": "r1bq1rk1/p3bppp/2p2n2/3p2B1/8/2NB1Q2/PPP2PPP/R4RK1 w - - 2 12",
        "hash": "9399772986789581140",
        "name": "Four Knights: Scotch, Main Line, 10.Bg5 c6 11.Qf3 Be7"
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        "eco": "C48a",
        "fen": "r1bqkb1r/pppp1ppp/2n2n2/1B2p3/4P3/2N2N2/PPPP1PPP/R1BQK2R b KQkq - 5 4",
        "hash": "16963470959540383058",
        "name": "Four Knights: Spanish Variation"
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        "eco": "C48b",
        "fen": "r1bqkb1r/ppp2ppp/2np1n2/1B2p3/4P3/2N2N2/PPPP1PPP/R1BQK2R w KQkq - 0 5",
        "hash": "15190866495513519167",
        "name": "Four Knights: Spanish, 4...d6"
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    "C48c": {
        "eco": "C48c",
        "fen": "r1bqkb1r/ppp2ppp/2np1n2/1B2p3/3PP3/2N2N2/PPP2PPP/R1BQK2R b KQkq d3 0 5",
        "hash": "1722032287408605565",
        "name": "Four Knights: Spanish, 4...d6 5.d4"
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    "C48d": {
        "eco": "C48d",
        "fen": "r1bqk2r/pppp1ppp/2n2n2/1Bb1p3/4P3/2N2N2/PPPP1PPP/R1BQK2R w KQkq - 6 5",
        "hash": "5077560836872849361",
        "name": "Four Knights: Spanish, Classical Defence"
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    "C48e": {
        "eco": "C48e",
        "fen": "r1bqk2r/pppp1ppp/2n2n2/1Bb1N3/4P3/2N5/PPPP1PPP/R1BQK2R b KQkq - 0 5",
        "hash": "17885177677214868199",
        "name": "Four Knights: Spanish, Classical Defence, 5.Nxe5"
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    "C48f": {
        "eco": "C48f",
        "fen": "r1bqk2r/pppp1ppp/2n2n2/1Bb1p3/4P3/2N2N2/PPPP1PPP/R1BQ1RK1 b kq - 7 5",
        "hash": "4035899926764199105",
        "name": "Four Knights: Spanish, Classical Defence, 5.O-O"
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    "C48g": {
        "eco": "C48g",
        "fen": "r1bqkb1r/pppp1ppp/5n2/1B2p3/3nP3/2N2N2/PPPP1PPP/R1BQK2R w KQkq - 6 5",
        "hash": "4329989041891798515",
        "name": "Four Knights: Rubinstein Countergambit"
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    "C48h": {
        "eco": "C48h",
        "fen": "r1bqkb1r/pppp1ppp/5n2/1B2N3/3nP3/2N5/PPPP1PPP/R1BQK2R b KQkq - 0 5",
        "hash": "9391345441965459653",
        "name": "Four Knights: Rubinstein, 5.Nxe5"
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    "C48i": {
        "eco": "C48i",
        "fen": "r1bqkb1r/pppp1ppp/5n2/1B2p3/3nP3/2N2N2/PPPP1PPP/R1BQ1RK1 b kq - 7 5",
        "hash": "4783470570693506787",
        "name": "Four Knights: Rubinstein, Henneberger Variation"
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    "C48j": {
        "eco": "C48j",
        "fen": "r1bqkb1r/pppp1ppp/5n2/4p3/2BnP3/2N2N2/PPPP1PPP/R1BQK2R b KQkq - 7 5",
        "hash": "10713066506678939103",
        "name": "Four Knights: Rubinstein, 5.Bc4"
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    "C48k": {
        "eco": "C48k",
        "fen": "r1bqkb1r/pppp1ppp/5n2/1B2p3/3NP3/2N5/PPPP1PPP/R1BQK2R b KQkq - 0 5",
        "hash": "15687462012168339176",
        "name": "Four Knights: Rubinstein, Exchange Variation"
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    "C48l": {
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        "hash": "17187841351747078743",
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        "hash": "6104564588113281464",
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        "hash": "1981041941088873272",
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        "hash": "10309150487395993318",
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        "hash": "14700734103515622297",
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        "hash": "1131072876945541033",
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        "hash": "13142444336106062267",
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        "hash": "5617202455357997922",
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        "hash": "1592720841146794740",
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        "hash": "14417759951416040107",
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        "hash": "10662299314153052989",
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        "hash": "7525233635068828132",
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        "hash": "1785559229527161455",
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        "hash": "13312280957642488096",
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        "hash": "9296606787140743245",
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        "hash": "17441479776127183811",
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        "hash": "5142681590128225157",
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        "hash": "15395892662214910608",
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        "hash": "2059872162009066911",
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        "hash": "8542267209002381339",
        "name": "Evans Gambit: 5...Ba5"
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        "hash": "885466006037789970",
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        "hash": "6136003612312950050",
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        "hash": "8231653850657007106",
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        "hash": "8688666508705583081",
        "name": "Giuoco Pianissimo: 5.d3 d6 6.O-O O-O"
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        "hash": "6801197100818309865",
        "name": "Giuoco Piano: 5.d4"
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        "hash": "11846059960437051544",
        "name": "Giuoco Piano: 6.e5"
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        "hash": "7614016266946362074",
        "name": "Giuoco Piano: 6.cxd4"
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        "fen": "r1bqk2r/pppp1ppp/2n2n2/8/1bBPP3/5N2/PP1B1PPP/RN1QK2R b KQkq - 2 7",
        "hash": "15901429865163912822",
        "name": "Giuoco Piano: 6.cxd4 Bb4+ 7.Bd2"
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        "fen": "r1bqk2r/pppp1ppp/2n2n2/8/1bBPP3/2N2N2/PP3PPP/R1BQK2R b KQkq - 2 7",
        "hash": "1060448323978272683",
        "name": "Giuoco Piano: Greco Attack"
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        "hash": "17027043985639485858",
        "name": "Giuoco Piano: Greco Attack"
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        "eco": "C55a",
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        "hash": "4652262204718639790",
        "name": "Two Knights Defence"
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        "eco": "C55b",
        "fen": "r1bqk2r/pppp1ppp/2n2n2/2b1p3/2BPP3/5N2/PPP2PPP/RNBQ1RK1 b kq d3 0 5",
        "hash": "6254716026008827519",
        "name": "Two Knights: Deutz Gambit"
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        "eco": "C55c",
        "fen": "r1bqkb1r/pppp1ppp/2n2n2/4p3/2B1P3/3P1N2/PPP2PPP/RNBQK2R b KQkq - 0 4",
        "hash": "17164594797838225786",
        "name": "Two Knights: 4.d3"
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        "eco": "C55d",
        "fen": "r1bqkb1r/pppp1pp1/2n2n1p/4p3/2B1P3/3P1N2/PPP2PPP/RNBQK2R w KQkq - 0 5",
        "hash": "8990222109112146031",
        "name": "Two Knights: 4.d3 h6"
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    "C55e": {
        "eco": "C55e",
        "fen": "r1bqk2r/ppppbppp/2n2n2/4p3/2B1P3/3P1N2/PPP2PPP/RNBQK2R w KQkq - 1 5",
        "hash": "18084371331159293419",
        "name": "Two Knights: 4.d3 Be7"
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        "eco": "C55f",
        "fen": "r1bqk2r/ppppbppp/2n2n2/4p3/2B1P3/2PP1N2/PP3PPP/RNBQK2R b KQkq - 0 5",
        "hash": "10097755849070080621",
        "name": "Two Knights: 4.d3 Be7 5.c3"
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    "C55g": {
        "eco": "C55g",
        "fen": "r1bqk2r/ppppbppp/2n2n2/4p3/2B1P3/3P1N2/PPP2PPP/RNBQ1RK1 b kq - 2 5",
        "hash": "9551550820281100027",
        "name": "Two Knights: 4.d3 Be7 5.O-O"
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    "C55h": {
        "eco": "C55h",
        "fen": "r1bq1rk1/ppppbppp/2n2n2/4p3/2B1P3/3P1N2/PPP2PPP/RNBQ1RK1 w - - 3 6",
        "hash": "10242594485350158096",
        "name": "Two Knights: 4.d3 Be7 5.O-O O-O"
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    "C55i": {
        "eco": "C55i",
        "fen": "r1bq1rk1/ppppbppp/2n2n2/4p3/4P3/1B1P1N2/PPP2PPP/RNBQ1RK1 b - - 4 6",
        "hash": "5125396852909121524",
        "name": "Two Knights: 4.d3 Be7 5.O-O O-O 6.Bb3"
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        "eco": "C55j",
        "fen": "r1bq1rk1/ppp1bppp/2np1n2/4p3/4P3/1BPP1N2/PP3PPP/RNBQ1RK1 b - - 0 7",
        "hash": "594897024990959903",
        "name": "Two Knights: 4.d3 Be7 5.O-O O-O 6.Bb3 d6 7.c3"
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        "eco": "C55k",
        "fen": "r1bq1rk1/ppppbppp/2n2n2/4p3/2B1P3/3P1N2/PPP2PPP/RNBQR1K1 b - - 4 6",
        "hash": "761407271883465732",
        "name": "Two Knights: 4.d3 Be7 5.O-O O-O 6.Re1"
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    "C55l": {
        "eco": "C55l",
        "fen": "r1bqkb1r/pppp1ppp/2n2n2/4p3/2BPP3/5N2/PPP2PPP/RNBQK2R b KQkq d3 0 4",
        "hash": "9630112696199530476",
        "name": "Two Knights: 4.d4"
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    "C55m": {
        "eco": "C55m",
        "fen": "r1bqkb1r/pppp1ppp/2n2n2/8/2BNP3/8/PPP2PPP/RNBQK2R b KQkq - 0 5",
        "hash": "8741310569773613527",
        "name": "Two Knights: 4.d4 exd4 5.Nxd4"
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    "C55n": {
        "eco": "C55n",
        "fen": "r1bqkb1r/pppp1ppp/2n2n2/6N1/2BpP3/8/PPP2PPP/RNBQK2R b KQkq - 1 5",
        "hash": "5190929836226653021",
        "name": "Two Knights: Perreux Variation"
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    "C55o": {
        "eco": "C55o",
        "fen": "r1bqkb1r/pppp1ppp/2n2n2/4P3/2Bp4/5N2/PPP2PPP/RNBQK2R b KQkq - 0 5",
        "hash": "9196935406180300189",
        "name": "Two Knights: Modern Variation"
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        "eco": "C55p",
        "fen": "r1bqkb1r/ppp2ppp/2n2n2/3pP3/2Bp4/5N2/PPP2PPP/RNBQK2R w KQkq d6 0 6",
        "hash": "16596302021288143642",
        "name": "Two Knights: Modern, 5.e5 d5"
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        "eco": "C55q",
        "fen": "r2qkb1r/pppb1ppp/2n5/1B1pP3/3Nn3/8/PPP2PPP/RNBQK2R w KQkq - 1 8",
        "hash": "17090767713477899378",
        "name": "Two Knights: Modern, Main Line"
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        "eco": "C55r",
        "fen": "r2qk2r/p1pb1ppp/2p5/2bpP3/3Nn3/8/PPP2PPP/RNBQ1RK1 w kq - 2 10",
        "hash": "12338157852387226096",
        "name": "Two Knights: Modern, Main Line, 8.Bxc6 bxc6 9.O-O Bc5"
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        "eco": "C55s",
        "fen": "r1bqkb1r/pppp1ppp/2n2n2/8/2BpP3/5N2/PPP2PPP/RNBQ1RK1 b kq - 1 5",
        "hash": "6966639604551846121",
        "name": "Two Knights: 5.O-O"
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        "eco": "C55t",
        "fen": "r1bqkb1r/ppp2ppp/2np1n2/8/2BpP3/5N2/PPP2PPP/RNBQ1RK1 w kq - 0 6",
        "hash": "6419018903422452100",
        "name": "Two Knights: 5.O-O d6"
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        "eco": "C55u",
        "fen": "r1bqk2r/pppp1ppp/2n2n2/2b5/2BpP3/5N2/PPP2PPP/RNBQ1RK1 w kq - 2 6",
        "hash": "14822258508519039594",
        "name": "Two Knights: Max Lange Attack"
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        "eco": "C55v",
        "fen": "r1bqk2r/pppp1ppp/2n5/2b1P3/2Bp2n1/5N2/PPP2PPP/RNBQ1RK1 w kq - 1 7",
        "hash": "3596528991321544034",
        "name": "Two Knights: Max Lange, Steinitz Variation"
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        "eco": "C55w",
        "fen": "r1bqk2r/ppp2ppp/2n2n2/2bpP3/2Bp4/5N2/PPP2PPP/RNBQ1RK1 w kq d6 0 7",
        "hash": "3835333701436906121",
        "name": "Two Knights: Max Lange, 6.e5 d5"
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        "eco": "C55x",
        "fen": "2kr3r/ppp2ppp/1bn1bPq1/6N1/2ppNPP1/8/PPP4P/R1BQR1K1 w - - 1 14",
        "hash": "18174880444938282061",
        "name": "Two Knights: Max Lange, Berger Variation"
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        "eco": "C56a",
        "fen": "r1bqkb1r/pppp1ppp/2n5/8/2Bpn3/5N2/PPP2PPP/RNBQ1RK1 w kq - 0 6",
        "hash": "15931826275219189754",
        "name": "Two Knights: Classical"
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    "C56b": {
        "eco": "C56b",
        "fen": "r1bqkb1r/pppp1ppp/2n5/8/2Bpn3/5N2/PPP2PPP/RNBQR1K1 b kq - 1 6",
        "hash": "6461883840184190190",
        "name": "Two Knights: Classical, 6.Re1"
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        "eco": "C56c",
        "fen": "r1bqkb1r/ppp2ppp/2n5/3p4/2Bpn3/2N2N2/PPP2PPP/R1BQR1K1 b kq - 1 7",
        "hash": "2832768202418866193",
        "name": "Two Knights: Classical, Canal Variation"
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        "eco": "C56d",
        "fen": "r1bqkb1r/ppp2ppp/2n5/3B4/3pn3/5N2/PPP2PPP/RNBQR1K1 b kq - 0 7",
        "hash": "11438475542861888642",
        "name": "Two Knights: Classical, 7.Bxd5"
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        "fen": "r1bqkb1r/ppp2ppp/2n5/8/3pn3/2N2N2/PPP2PPP/R1BQR1K1 w kq - 2 9",
        "hash": "17498193803869454975",
        "name": "Two Knights: Classical, 8.Nc3 Qd8"
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        "eco": "C56f",
        "fen": "r1b1kb1r/ppp2ppp/2n5/7q/3pn3/2N2N2/PPP2PPP/R1BQR1K1 w kq - 2 9",
        "hash": "10407967433004401569",
        "name": "Two Knights: Classical, 8.Nc3 Qh5"
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        "eco": "C56g",
        "fen": "r3k2r/ppp2ppp/2nbb3/6Bq/3pN3/5N2/PPP2PPP/R2QR1K1 w kq - 3 11",
        "hash": "6308456882924886993",
        "name": "Two Knights: Classical, 8.Nc3 Qh5 9.Nxe4 Be6 10.Bg5 Bd6"
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    "C56h": {
        "eco": "C56h",
        "fen": "r1b1kb1r/ppp2ppp/2n5/q7/3pn3/2N2N2/PPP2PPP/R1BQR1K1 w kq - 2 9",
        "hash": "15236699531774076665",
        "name": "Two Knights: Classical, Moller Variation"
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    "C56i": {
        "eco": "C56i",
        "fen": "r3kb1r/ppp2ppp/2n1b3/q5B1/3pN3/5N2/PPP2PPP/R2QR1K1 b kq - 2 10",
        "hash": "12742776669778948013",
        "name": "Two Knights: Classical, Moller, 10.Bg5"
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        "eco": "C56j",
        "fen": "r3kb1r/ppp2ppp/2n1b3/q5N1/3p4/5N2/PPP2PPP/R1BQR1K1 b kq - 2 10",
        "hash": "4750712779834135434",
        "name": "Two Knights: Classical, Moller, 10.Neg5"
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    "C56k": {
        "eco": "C56k",
        "fen": "2kr3r/ppp3pp/2nbR3/q7/3p4/5N2/PPP2PPP/R1BQ2K1 w - - 1 13",
        "hash": "407127636100843341",
        "name": "Two Knights: Classical, Moller, 10.Neg5 O-O-O 11.Nxe6 fxe6 12.Rxe6 Bd6"
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    "C56l": {
        "eco": "C56l",
        "fen": "r3kb1r/ppp2ppp/2n1b3/q7/3pN3/5N2/PPPB1PPP/R2QR1K1 b kq - 2 10",
        "hash": "6845579593037160289",
        "name": "Two Knights: Classical, Moller, 10.Bd2"
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    "C56m": {
        "eco": "C56m",
        "fen": "r3kb1r/ppp2ppp/2n1b3/5q2/3pN3/5N2/PPPB1PPP/R2QR1K1 w kq - 3 11",
        "hash": "12096478334684990591",
        "name": "Two Knights: Classical, Moller, 10.Bd2 Qf5"
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    "C56n": {
        "eco": "C56n",
        "fen": "r3kb1r/ppp2ppp/2n1b3/3q4/3pN3/5N2/PPPB1PPP/R2QR1K1 w kq - 3 11",
        "hash": "11634949794258235076",
        "name": "Two Knights: Classical, Moller, 10.Bd2 Qd5"
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    "C56o": {
        "eco": "C56o",
        "fen": "r3k2r/ppp2ppp/2n1b3/q7/1b1pN3/5N2/PPPB1PPP/R2QR1K1 w kq - 3 11",
        "hash": "10826947454433449795",
        "name": "Two Knights: Classical, Moller, 10.Bd2 Bb4"
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    "C57a": {
        "eco": "C57a",
        "fen": "r1bqkb1r/pppp1ppp/2n2n2/4p1N1/2B1P3/8/PPPP1PPP/RNBQK2R b KQkq - 5 4",
        "hash": "1604062147375403530",
        "name": "Two Knights: 4.Ng5"
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        "eco": "C57b",
        "fen": "r1bqk2r/pppp1Npp/2n2n2/2b1p3/2B1P3/8/PPPP1PPP/RNBQK2R b KQkq - 0 5",
        "hash": "14146641326720453683",
        "name": "Two Knights: Traxler, 5.Nxf7"
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    "C57c": {
        "eco": "C57c",
        "fen": "r1bqk2r/pppp1Npp/2n2n2/4p3/2B1P3/8/PPPP1bPP/RNBQ1K1R b kq - 1 6",
        "hash": "11913397945319877898",
        "name": "Two Knights: Traxler, 5.Nxf7 & 6.Kf1"
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    "C57d": {
        "eco": "C57d",
        "fen": "r1bqk2r/pppp1Bpp/2n2n2/2b1p1N1/4P3/8/PPPP1PPP/RNBQK2R b KQkq - 0 5",
        "hash": "1940156922684857084",
        "name": "Two Knights: Traxler, 5.Bxf7+"
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    "C57e": {
        "eco": "C57e",
        "fen": "r1bqkb1r/ppp2ppp/2n2n2/3pp1N1/2B1P3/8/PPPP1PPP/RNBQK2R w KQkq d6 0 5",
        "hash": "10603976091408423980",
        "name": "Two Knights: 4.Ng5 d5"
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    "C57f": {
        "eco": "C57f",
        "fen": "r1bqkb1r/ppp2ppp/2n5/3np1N1/2BP4/8/PPP2PPP/RNBQK2R b KQkq d3 0 6",
        "hash": "17162298682496855604",
        "name": "Two Knights: Lolli Attack"
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        "eco": "C57g",
        "fen": "r1bqkb1r/ppp2Npp/2n5/3np3/2B5/8/PPPP1PPP/RNBQK2R b KQkq - 0 6",
        "hash": "6058714903045502924",
        "name": "Two Knights: Fegatello (Fried Liver) Attack"
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    "C57h": {
        "eco": "C57h",
        "fen": "r1bqkb1r/p1p2ppp/2n2n2/1p1Pp1N1/2B5/8/PPPP1PPP/RNBQK2R w KQkq b6 0 6",
        "hash": "15344753812617339671",
        "name": "Two Knights: Ulvestad Variation"
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    "C57i": {
        "eco": "C57i",
        "fen": "r1bqkb1r/ppp2ppp/5n2/3Pp1N1/2Bn4/8/PPPP1PPP/RNBQK2R w KQkq - 1 6",
        "hash": "7172689112368504459",
        "name": "Two Knights: Fritz Variation"
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    "C57j": {
        "eco": "C57j",
        "fen": "r1bqkb1r/p1p2Npp/8/1p1np3/3n4/2P5/PP1P1PPP/RNBQKB1R b KQkq - 0 8",
        "hash": "17727482454706377584",
        "name": "Two Knights: Fritz, 8.Nxf7"
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        "eco": "C57k",
        "fen": "r1bqkb1r/p1p2ppp/8/1p1np3/3nN3/2P5/PP1P1PPP/RNBQKB1R b KQkq - 1 8",
        "hash": "13720509452377636901",
        "name": "Two Knights: Fritz, Gruber Variation (8.Ne4)"
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    "C57l": {
        "eco": "C57l",
        "fen": "r3kb1r/pbp2ppp/8/1p1np3/3n3q/2P3N1/PP1P1PPP/RNBQKB1R w KQkq - 4 10",
        "hash": "10216791907259423922",
        "name": "Two Knights: Fritz, Radchenko Variation"
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        "eco": "C57m",
        "fen": "r3kb1r/p1p2ppp/8/1p1n4/3np1bq/2P2PN1/PP1P2PP/RNBQKB1R w KQkq - 0 11",
        "hash": "9096444356550724932",
        "name": "Two Knights: Fritz, Berliner Variation"
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        "eco": "C58a",
        "fen": "r1bqkb1r/ppp2ppp/5n2/n2Pp1N1/2B5/8/PPPP1PPP/RNBQK2R w KQkq - 1 6",
        "hash": "16276225291237571616",
        "name": "Two Knights: Morphy Variation (5...Na5)"
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        "eco": "C58b",
        "fen": "r1bqkb1r/ppp2ppp/5n2/n2Pp1N1/2B5/3P4/PPP2PPP/RNBQK2R b KQkq - 0 6",
        "hash": "5711698471952648180",
        "name": "Two Knights: Morphy, Kieseritsky Variation"
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    "C58c": {
        "eco": "C58c",
        "fen": "r1bqkb1r/ppp2pp1/5n1p/n2P4/2B1p3/3P1N2/PPP1QPPP/RNB1K2R b KQkq - 1 8",
        "hash": "3630217412856001079",
        "name": "Two Knights: Morphy, Kieseritsky Variation, 6...h6 7.Nf3 e4 8.Qe2"
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        "eco": "C58d",
        "fen": "r1bqkb1r/ppp2ppp/5n2/nB1Pp1N1/8/8/PPPP1PPP/RNBQK2R b KQkq - 2 6",
        "hash": "5285967602387090444",
        "name": "Two Knights: Morphy, Polerio (6.Bb5+)"
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        "eco": "C58e",
        "fen": "r1bqkb1r/pp3ppp/2p2n2/nB1Pp1N1/8/8/PPPP1PPP/RNBQK2R w KQkq - 0 7",
        "hash": "15790018764608745399",
        "name": "Two Knights: Morphy, Polerio, 6...c6"
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        "eco": "C58f",
        "fen": "r1bqkb1r/p4ppp/2p2n2/nB2p1N1/8/5Q2/PPPP1PPP/RNB1K2R b KQkq - 1 8",
        "hash": "13153175608685011344",
        "name": "Two Knights: Morphy, Bogoljubow Variation"
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    "C58g": {
        "eco": "C58g",
        "fen": "1rbqkb1r/p4ppp/2p2n2/nB2p1N1/8/5Q2/PPPP1PPP/RNB1K2R w KQk - 2 9",
        "hash": "3520753591980132403",
        "name": "Two Knights: Morphy, Colman Variation"
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    "C58h": {
        "eco": "C58h",
        "fen": "r1bqkb1r/p4ppp/2p2n2/n3p1N1/8/8/PPPPBPPP/RNBQK2R b KQkq - 1 8",
        "hash": "12980350805804296962",
        "name": "Two Knights: Morphy, 8.Be2"
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    "C59a": {
        "eco": "C59a",
        "fen": "r1bqkb1r/p4pp1/2p2n1p/n3p1N1/8/8/PPPPBPPP/RNBQK2R w KQkq - 0 9",
        "hash": "2797917542780232215",
        "name": "Two Knights: Morphy, 8.Be2 h6"
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    "C59b": {
        "eco": "C59b",
        "fen": "r1bqkb1r/p4pp1/2p2n1p/n3p3/8/7N/PPPPBPPP/RNBQK2R b KQkq - 1 9",
        "hash": "13883723002185516116",
        "name": "Two Knights: Morphy, Steinitz Variation"
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    "C59c": {
        "eco": "C59c",
        "fen": "r1bqkb1r/p4pp1/2p2n1p/n3p3/8/5N2/PPPPBPPP/RNBQK2R b KQkq - 1 9",
        "hash": "8072371360974969523",
        "name": "Two Knights: Morphy, Main Line 9.Nf3"
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    "C59d": {
        "eco": "C59d",
        "fen": "r1bqk2r/p4pp1/2p2n1p/n1b1N3/4p3/8/PPPPBPPP/RNBQK2R w KQkq - 2 11",
        "hash": "3397249043347884720",
        "name": "Two Knights: Morphy, Steiner Variation"
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    "C59e": {
        "eco": "C59e",
        "fen": "r1b1kb1r/p1q2pp1/2p2n1p/n3N3/4p3/8/PPPPBPPP/RNBQK2R w KQkq - 2 11",
        "hash": "9522596961479356210",
        "name": "Two Knights: Morphy, Goering Variation"
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    "C59f": {
        "eco": "C59f",
        "fen": "r1b1kb1r/p4pp1/2p2n1p/n3N3/3qp3/8/PPPPBPPP/RNBQK2R w KQkq - 2 11",
        "hash": "14601480101904837788",
        "name": "Two Knights: Morphy, Geller Variation"
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    "C59g": {
        "eco": "C59g",
        "fen": "r1bqk2r/p4pp1/2pb1n1p/n3N3/4p3/8/PPPPBPPP/RNBQK2R w KQkq - 2 11",
        "hash": "2765313355636896023",
        "name": "Two Knights: Main Line 10...Bd6"
    },
    "C59h": {
        "eco": "C59h",
        "fen": "r1bqk2r/p4pp1/2pb1n1p/n3N3/4pP2/8/PPPPB1PP/RNBQK2R b KQkq f3 0 11",
        "hash": "833837385646389228",
        "name": "Two Knights: Main Line, 11.f4"
    },
    "C59i": {
        "eco": "C59i",
        "fen": "r1bqk2r/p4pp1/2pb1n1p/n3N3/8/5p2/PPPPB1PP/RNBQK2R w KQkq - 0 12",
        "hash": "7856685951669048093",
        "name": "Two Knights: Main Line, 11.f4 exf3"
    },
    "C59j": {
        "eco": "C59j",
        "fen": "r1bqk2r/p4pp1/2pb1n1p/n3N3/3Pp3/8/PPP1BPPP/RNBQK2R b KQkq d3 0 11",
        "hash": "18432297183787142388",
        "name": "Two Knights: Main Line, 11.d4"
    },
    "C59k": {
        "eco": "C59k",
        "fen": "r1bqk2r/p4pp1/2pb1n1p/n3N3/8/3p4/PPP1BPPP/RNBQK2R w KQkq - 0 12",
        "hash": "14634844824036939182",
        "name": "Two Knights: Main Line, 11.d4 exd3"
    },
    "C59l": {
        "eco": "C59l",
        "fen": "r1b1k2r/p1q2pp1/2pb1n1p/n7/8/1P1N4/P1P1BPPP/RNBQK2R b KQkq - 0 13",
        "hash": "17185746986053918444",
        "name": "Two Knights: Main Line, 11.d4, Honfi Variation"
    },
    "C60a": {
        "eco": "C60a",
        "fen": "r1bqkbnr/pppp1ppp/2n5/1B2p3/4P3/5N2/PPPP1PPP/RNBQK2R b KQkq - 3 3",
        "hash": "5409798013178080797",
        "name": "Spanish (Ruy Lopez)"
    },
    "C60b": {
        "eco": "C60b",
        "fen": "r1bqkbnr/1ppp1ppp/2n5/pB2p3/4P3/5N2/PPPP1PPP/RNBQK2R w KQkq a6 0 4",
        "hash": "14774554869944279693",
        "name": "Spanish: 3...a5"
    },
    "C60c": {
        "eco": "C60c",
        "fen": "r1bqkbnr/pppp2pp/2n2p2/1B2p3/4P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 0 4",
        "hash": "9747602586449279330",
        "name": "Spanish: Nuernberg Variation"
    },
    "C60d": {
        "eco": "C60d",
        "fen": "r1bqkbnr/pppp1ppp/8/nB2p3/4P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4",
        "hash": "2162955240635845655",
        "name": "Spanish: Pollock Defence"
    },
    "C60e": {
        "eco": "C60e",
        "fen": "r1bqk1nr/ppppbppp/2n5/1B2p3/4P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4",
        "hash": "6908246189074563724",
        "name": "Spanish: Lucena Defence"
    },
    "C60f": {
        "eco": "C60f",
        "fen": "r1b1kbnr/ppppqppp/2n5/1B2p3/4P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4",
        "hash": "15054594372511940727",
        "name": "Spanish: Vinogradov Variation"
    },
    "C60g": {
        "eco": "C60g",
        "fen": "r1bqkbnr/pppp1p1p/2n5/1B2p1p1/4P3/5N2/PPPP1PPP/RNBQK2R w KQkq g6 0 4",
        "hash": "14650357458839736727",
        "name": "Spanish: Brentano Variation"
    },
    "C60h": {
        "eco": "C60h",
        "fen": "r1bqk1nr/pppp1ppp/2n5/1B2p3/1b2P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4",
        "hash": "9390602976111896127",
        "name": "Spanish: Alapin Variation"
    },
    "C60i": {
        "eco": "C60i",
        "fen": "r1bqk1nr/pppp1ppp/2n5/1B2p3/1b2P3/2P2N2/PP1P1PPP/RNBQK2R b KQkq - 0 4",
        "hash": "17620587803774560697",
        "name": "Spanish: Alapin, 4.c3"
    },
    "C60j": {
        "eco": "C60j",
        "fen": "r1bqkbnr/pppp1p1p/2n3p1/1B2p3/4P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 0 4",
        "hash": "11720378311088045142",
        "name": "Spanish: Fianchetto (Smyslov) Defence"
    },
    "C60k": {
        "eco": "C60k",
        "fen": "r1bqkbnr/pppp1p1p/2n3p1/1B2p3/4P3/5N2/PPPP1PPP/RNBQ1RK1 b kq - 1 4",
        "hash": "15911884674279647046",
        "name": "Spanish: Fianchetto, 4.O-O"
    },
    "C60l": {
        "eco": "C60l",
        "fen": "r1bqkbnr/pppp1p1p/2n3p1/1B2p3/3PP3/5N2/PPP2PPP/RNBQK2R b KQkq d3 0 4",
        "hash": "7463038871627976980",
        "name": "Spanish: Fianchetto, 4.d4"
    },
    "C60m": {
        "eco": "C60m",
        "fen": "r1bqkbnr/pppp1p1p/2n3p1/1B4B1/3pP3/5N2/PPP2PPP/RN1QK2R b KQkq - 1 5",
        "hash": "4230665538547785417",
        "name": "Spanish: Fianchetto, 4.d4 exd4 5.Bg5"
    },
    "C60n": {
        "eco": "C60n",
        "fen": "r1bqkbnr/pppp1p1p/2n3p1/1B2p3/4P3/2P2N2/PP1P1PPP/RNBQK2R b KQkq - 0 4",
        "hash": "15311637724761977808",
        "name": "Spanish: Fianchetto, 4.c3"
    },
    "C60o": {
        "eco": "C60o",
        "fen": "r1bqkb1r/ppppnppp/2n5/1B2p3/4P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4",
        "hash": "8456856425285445024",
        "name": "Spanish: Cozio Defence"
    },
    "C60p": {
        "eco": "C60p",
        "fen": "r1bqkb1r/ppppnppp/2n5/1B2p3/4P3/2N2N2/PPPP1PPP/R1BQK2R b KQkq - 5 4",
        "hash": "10289549487336384377",
        "name": "Spanish: Cozio, 4.Nc3"
    },
    "C60q": {
        "eco": "C60q",
        "fen": "r1bqkb1r/ppppnp1p/2n3p1/1B2p3/4P3/2N2N2/PPPP1PPP/R1BQK2R w KQkq - 0 5",
        "hash": "7457822330391328050",
        "name": "Spanish: Cozio, Paulsen Variation"
    },
    "C60r": {
        "eco": "C60r",
        "fen": "r1bqkb1r/ppppnppp/2n5/1B2p3/4P3/2P2N2/PP1P1PPP/RNBQK2R b KQkq - 0 4",
        "hash": "253945971945138726",
        "name": "Spanish: Cozio, 4.O-O"
    },
    "C60s": {
        "eco": "C60s",
        "fen": "r1bqkb1r/ppppnppp/2n5/1B2p3/4P3/5N2/PPPP1PPP/RNBQ1RK1 b kq - 5 4",
        "hash": "804368796863020720",
        "name": "Spanish: Cozio, 4.O-O"
    },
    "C60t": {
        "eco": "C60t",
        "fen": "r1bqkb1r/ppppnp1p/2n3p1/1B2p3/4P3/5N2/PPPP1PPP/RNBQ1RK1 w kq - 0 5",
        "hash": "16329456810935332091",
        "name": "Spanish: Cozio, 4.O-O g6"
    },
    "C60u": {
        "eco": "C60u",
        "fen": "r1bqkb1r/ppppnp1p/2n3p1/1B2p3/4P3/2P2N2/PP1P1PPP/RNBQ1RK1 b kq - 0 5",
        "hash": "10684538238092321661",
        "name": "Spanish: Cozio, 4.O-O g6"
    },
    "C61a": {
        "eco": "C61a",
        "fen": "r1bqkbnr/pppp1ppp/8/1B2p3/3nP3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4",
        "hash": "11271975782963195580",
        "name": "Spanish: Bird's Defence"
    },
    "C61b": {
        "eco": "C61b",
        "fen": "r1bqkbnr/pppp1ppp/8/4p3/2BnP3/5N2/PPPP1PPP/RNBQK2R b KQkq - 5 4",
        "hash": "3807047385480392336",
        "name": "Spanish: Bird's, 4.Bc4"
    },
    "C61c": {
        "eco": "C61c",
        "fen": "r1bqkbnr/pppp1ppp/8/1B2p3/3NP3/8/PPPP1PPP/RNBQK2R b KQkq - 0 4",
        "hash": "8776429094157073831",
        "name": "Spanish: Bird's, 4.Nxd4"
    },
    "C61d": {
        "eco": "C61d",
        "fen": "r1bqkbnr/pppp1ppp/8/1B6/3pP3/3P4/PPP2PPP/RNBQK2R b KQkq - 0 5",
        "hash": "3398181147918340153",
        "name": "Spanish: Bird's, 5.d3"
    },
    "C61e": {
        "eco": "C61e",
        "fen": "r1bqkbnr/pppp1ppp/8/8/2BpP3/8/PPPP1PPP/RNBQK2R b KQkq - 1 5",
        "hash": "2969916452745407425",
        "name": "Spanish: Bird's, 5.Bc4"
    },
    "C61f": {
        "eco": "C61f",
        "fen": "r1bqkbnr/pppp1ppp/8/1B6/3pP3/8/PPPP1PPP/RNBQ1RK1 b kq - 1 5",
        "hash": "18444909396094447869",
        "name": "Spanish: Bird's, 5.O-O"
    },
    "C61g": {
        "eco": "C61g",
        "fen": "r1bqkbnr/pp1p1ppp/2p5/1B6/3pP3/8/PPPP1PPP/RNBQ1RK1 w kq - 0 6",
        "hash": "7891316661783470918",
        "name": "Spanish: Bird's, 5.O-O c6"
    },
    "C61h": {
        "eco": "C61h",
        "fen": "r1bqkbnr/pp1p1ppp/2p5/8/2BpP3/8/PPPP1PPP/RNBQ1RK1 b kq - 1 6",
        "hash": "14211343491254543210",
        "name": "Spanish: Bird's, 5.O-O c6 6.Bc4"
    },
    "C61i": {
        "eco": "C61i",
        "fen": "r1bqk1nr/pppp1ppp/8/1Bb5/3pP3/8/PPPP1PPP/RNBQ1RK1 w kq - 2 6",
        "hash": "5972968297015777918",
        "name": "Spanish: Bird's, 5.O-O Bc5"
    },
    "C61j": {
        "eco": "C61j",
        "fen": "r1bqk1nr/pppp1ppp/8/1Bb5/3pP3/3P4/PPP2PPP/RNBQ1RK1 b kq - 0 6",
        "hash": "18176806067875029418",
        "name": "Spanish: Bird's, 5.O-O Bc5 6.d3"
    },
    "C61k": {
        "eco": "C61k",
        "fen": "r1bqk1nr/pp1p1ppp/2p5/1Bb5/3pP3/3P4/PPP2PPP/RNBQ1RK1 w kq - 0 7",
        "hash": "7942679855858709009",
        "name": "Spanish: Bird's, 5.O-O Bc5 6.d3 c6"
    },
    "C61l": {
        "eco": "C61l",
        "fen": "r1bqk1nr/pp1p1ppp/2p5/2b5/2BpP3/3P4/PPP2PPP/RNBQ1RK1 b kq - 1 7",
        "hash": "14303804132256592445",
        "name": "Spanish: Bird's, 5.O-O Bc5 6.d3 c6 7.Bc4"
    },
    "C61m": {
        "eco": "C61m",
        "fen": "r1bqk1nr/pp3ppp/2p5/2bp4/2BpP3/3P4/PPP2PPP/RNBQ1RK1 w kq d6 0 8",
        "hash": "4894128592536960027",
        "name": "Spanish: Bird's, 5.O-O Bc5 6.d3 c6 7.Bc4 d5"
    },
    "C62": {
        "eco": "C62",
        "fen": "r1bqkbnr/ppp2ppp/2np4/1B2p3/4P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 0 4",
        "hash": "8262382109317900144",
        "name": "Spanish: Old Steinitz"
    },
    "C63a": {
        "eco": "C63a",
        "fen": "r1bqkbnr/pppp2pp/2n5/1B2pp2/4P3/5N2/PPPP1PPP/RNBQK2R w KQkq f6 0 4",
        "hash": "16103764203707286467",
        "name": "Spanish: Schliemann (Jaenisch)"
    },
    "C63b": {
        "eco": "C63b",
        "fen": "r1bqkbnr/pppp2pp/2n5/1B2pP2/8/5N2/PPPP1PPP/RNBQK2R b KQkq - 0 4",
        "hash": "3724516987739105796",
        "name": "Spanish: Schliemann, 4.exf5"
    },
    "C63c": {
        "eco": "C63c",
        "fen": "r1bqkbnr/pppp2pp/2n5/1B2pp2/3PP3/5N2/PPP2PPP/RNBQK2R b KQkq d3 0 4",
        "hash": "1894115018297241217",
        "name": "Spanish: Schliemann, 4.d4"
    },
    "C63d": {
        "eco": "C63d",
        "fen": "r1bqkbnr/pppp2pp/2n5/1B2pp2/4P3/3P1N2/PPP2PPP/RNBQK2R b KQkq - 0 4",
        "hash": "8203539738398783511",
        "name": "Spanish: Schliemann, 4.d3"
    },
    "C63e": {
        "eco": "C63e",
        "fen": "r1bqkbnr/pppp2pp/2n5/1B2p3/4p3/3P1N2/PPP2PPP/RNBQK2R w KQkq - 0 5",
        "hash": "12955585005746014172",
        "name": "Spanish: Schliemann, 4.d3 fxe4"
    },
    "C63f": {
        "eco": "C63f",
        "fen": "r1bqkb1r/pppp2pp/2n2n2/1B2p3/4P3/5N2/PPP2PPP/RNBQ1RK1 b kq - 2 6",
        "hash": "3396572307032900910",
        "name": "Spanish: Schliemann, 4.d3 fxe4 5.dxe4 Nf6 6.O-O"
    },
    "C63g": {
        "eco": "C63g",
        "fen": "r1bqkbnr/pppp2pp/2B5/4pp2/4P3/5N2/PPPP1PPP/RNBQK2R b KQkq - 0 4",
        "hash": "10255587911215420408",
        "name": "Spanish: Schliemann, 4.Bxc6"
    },
    "C63h": {
        "eco": "C63h",
        "fen": "r1bqkbnr/ppp3pp/2p5/4pp2/4P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 0 5",
        "hash": "13295479913523677575",
        "name": "Spanish: Schliemann, 4.Bxc6 dxc6"
    },
    "C63i": {
        "eco": "C63i",
        "fen": "r1bqkbnr/pppp2pp/2n5/1B2pp2/4P3/2N2N2/PPPP1PPP/R1BQK2R b KQkq - 1 4",
        "hash": "2660229462653485338",
        "name": "Spanish: Schliemann, 4.Nc3"
    },
    "C63j": {
        "eco": "C63j",
        "fen": "r1bqkbnr/pppp2pp/8/1B2pp2/3nP3/2N2N2/PPPP1PPP/R1BQK2R w KQkq - 2 5",
        "hash": "17552327080123367867",
        "name": "Spanish: Schliemann, 4.Nc3 Nd4"
    },
    "C63k": {
        "eco": "C63k",
        "fen": "r1bqkbnr/pppp2pp/8/4pp2/B2nP3/2N2N2/PPPP1PPP/R1BQK2R b KQkq - 3 5",
        "hash": "14021159436040501393",
        "name": "Spanish: Schliemann, 4.Nc3 Nd4 5.Ba4"
    },
    "C63l": {
        "eco": "C63l",
        "fen": "r1bqkb1r/pppp2pp/2n2n2/1B2pp2/4P3/2N2N2/PPPP1PPP/R1BQK2R w KQkq - 2 5",
        "hash": "9152788267882971276",
        "name": "Spanish: Schliemann, 4.Nc3 Nf6"
    },
    "C63m": {
        "eco": "C63m",
        "fen": "r1bqkb1r/pppp2pp/2n2n2/1B2pP2/8/2N2N2/PPPP1PPP/R1BQK2R b KQkq - 0 5",
        "hash": "10649051731201108299",
        "name": "Spanish: Schliemann, 4.Nc3 Nf6 5.exf5"
    },
    "C63n": {
        "eco": "C63n",
        "fen": "r1bqkbnr/pppp2pp/2n5/1B2p3/4p3/2N2N2/PPPP1PPP/R1BQK2R w KQkq - 0 5",
        "hash": "16643229016075828945",
        "name": "Spanish: Schliemann, 4.Nc3 fxe4"
    },
    "C63o": {
        "eco": "C63o",
        "fen": "r1bqkb1r/pppp2pp/2n2n2/1B2p3/4N3/5N2/PPPP1PPP/R1BQK2R w KQkq - 1 6",
        "hash": "1717184939149012688",
        "name": "Spanish: Schliemann, 4.Nc3 fxe4 5.Nxe4 Nf6"
    },
    "C63p": {
        "eco": "C63p",
        "fen": "r1bqkb1r/pppp2pp/2n2n2/1B2p3/4N3/5N2/PPPPQPPP/R1B1K2R b KQkq - 2 6",
        "hash": "9354580852130248020",
        "name": "Spanish: Schliemann, 4.Nc3 fxe4 5.Nxe4 Nf6 6.Qe2"
    },
    "C63q": {
        "eco": "C63q",
        "fen": "r1bqkb1r/pppp2pp/2n2N2/1B2p3/8/5N2/PPPP1PPP/R1BQK2R b KQkq - 0 6",
        "hash": "5996304535306013793",
        "name": "Spanish: Schliemann, 4.Nc3 fxe4 5.Nxe4 Nf6 6.Nxf6+"
    },
    "C63r": {
        "eco": "C63r",
        "fen": "r1bqkbnr/ppp3pp/2n5/1B1pp3/4N3/5N2/PPPP1PPP/R1BQK2R w KQkq d6 0 6",
        "hash": "14506301638753296736",
        "name": "Spanish: Schliemann, 4.Nc3 fxe4 5.Nxe4 d5"
    },
    "C63s": {
        "eco": "C63s",
        "fen": "r1bqkbnr/ppp3pp/2n5/1B1pN3/4N3/8/PPPP1PPP/R1BQK2R b KQkq - 0 6",
        "hash": "8580281430512239702",
        "name": "Spanish: Schliemann, 4.Nc3 fxe4 5.Nxe4 d5 6.Nxe5"
    },
    "C63t": {
        "eco": "C63t",
        "fen": "r1b1kbnr/ppp3pp/2N5/1B1q4/4p3/8/PPPP1PPP/R1BQK2R w KQkq - 1 8",
        "hash": "10751280504887837743",
        "name": "Spanish: Schliemann, 4.Nc3 fxe4 5.Nxe4 d5 6.Nxe5 dxe4 7.Nxc6 Qd5"
    },
    "C63u": {
        "eco": "C63u",
        "fen": "r1b1kbnr/ppp3pp/2N5/1B4q1/4p3/8/PPPP1PPP/R1BQK2R w KQkq - 1 8",
        "hash": "584107990995771644",
        "name": "Spanish: Schliemann, 4.Nc3 fxe4 5.Nxe4 d5 6.Nxe5 dxe4 7.Nxc6 Qg5"
    },
    "C64a": {
        "eco": "C64a",
        "fen": "r1bqk1nr/pppp1ppp/2n5/1Bb1p3/4P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 4 4",
        "hash": "16577243330810021022",
        "name": "Spanish: Classical Defence"
    },
    "C64b": {
        "eco": "C64b",
        "fen": "r1bqk1nr/pppp1ppp/2n5/1Bb1p3/4P3/2P2N2/PP1P1PPP/RNBQK2R b KQkq - 0 4",
        "hash": "10436188760530291480",
        "name": "Spanish: Classical, 4.c3"
    },
    "C64c": {
        "eco": "C64c",
        "fen": "r1bqk1nr/pppp1ppp/1bn5/1B2p3/4P3/2P2N2/PP1P1PPP/RNBQK2R w KQkq - 1 5",
        "hash": "8083928517957771789",
        "name": "Spanish: Classical, Charousek Variation"
    },
    "C64d": {
        "eco": "C64d",
        "fen": "r1bqk2r/ppppnppp/2n5/1Bb1p3/4P3/2P2N2/PP1P1PPP/RNBQK2R w KQkq - 1 5",
        "hash": "12581780687693840549",
        "name": "Spanish: Classical, 4.c3 Nge7"
    },
    "C64e": {
        "eco": "C64e",
        "fen": "r1b1k1nr/pppp1ppp/2n2q2/1Bb1p3/4P3/2P2N2/PP1P1PPP/RNBQK2R w KQkq - 1 5",
        "hash": "10947221160642496757",
        "name": "Spanish: Classical, 4.c3 Qf6"
    },
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        "eco": "C64f",
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        "hash": "14544798344310081827",
        "name": "Spanish: Exchange, Keres, 5...f6"
    },
    "C68i": {
        "eco": "C68i",
        "fen": "r1bqkbnr/1pp3pp/p1p2p2/4p3/3PP3/2N2N2/PPP2PPP/R1BQK2R b KQkq d3 0 6",
        "hash": "931311234899502177",
        "name": "Spanish: Exchange, 5.Nc3 f6 6.d4"
    },
    "C68j": {
        "eco": "C68j",
        "fen": "r1bqkbnr/1pp2ppp/p1p5/4p3/4P3/5N2/PPPP1PPP/RNBQ1RK1 b kq - 1 5",
        "hash": "9254585899963942805",
        "name": "Spanish: Exchange, 5.O-O"
    },
    "C68k": {
        "eco": "C68k",
        "fen": "r1bqkb1r/1pp1nppp/p1p5/4p3/4P3/5N2/PPPP1PPP/RNBQ1RK1 w kq - 2 6",
        "hash": "13700328755559992360",
        "name": "Spanish: Exchange, 5.O-O Ne7"
    },
    "C68l": {
        "eco": "C68l",
        "fen": "r1bqk1nr/1pp2ppp/p1pb4/4p3/4P3/5N2/PPPP1PPP/RNBQ1RK1 w kq - 2 6",
        "hash": "2609424032435164849",
        "name": "Spanish: Exchange, 5.O-O Bd6"
    },
    "C68m": {
        "eco": "C68m",
        "fen": "r1bqk1nr/1pp2ppp/p1pb4/8/3pP3/5N2/PPP2PPP/RNBQ1RK1 w kq - 0 7",
        "hash": "8826400501279518694",
        "name": "Spanish: Exchange, 5.O-O Bd6 6.d4 exd4"
    },
    "C68n": {
        "eco": "C68n",
        "fen": "r2qkbnr/1pp2ppp/p1p5/4p3/4P1b1/5N2/PPPP1PPP/RNBQ1RK1 w kq - 2 6",
        "hash": "9420737559047539071",
        "name": "Spanish: Exchange, 5.O-O Bg4"
    },
    "C68o": {
        "eco": "C68o",
        "fen": "r2qkbnr/1pp2pp1/p1p5/4p2p/4P1b1/5N1P/PPPP1PP1/RNBQ1RK1 w kq h6 0 7",
        "hash": "8579477275768447482",
        "name": "Spanish: Exchange, Alapin Gambit"
    },
    "C68p": {
        "eco": "C68p",
        "fen": "r3kbnr/1pp2pp1/p1p2q2/4p2p/4P1b1/3P1N1P/PPPN1PP1/R1BQ1RK1 b kq - 2 8",
        "hash": "9791541719583601139",
        "name": "Spanish: Exchange, Alapin Gambit, 7.d3 Qf6 8.Nbd2"
    },
    "C68q": {
        "eco": "C68q",
        "fen": "r1b1kbnr/1pp2ppp/p1pq4/4p3/4P3/5N2/PPPP1PPP/RNBQ1RK1 w kq - 2 6",
        "hash": "3819772972804705162",
        "name": "Spanish: Exchange, Bronstein Variation"
    },
    "C68r": {
        "eco": "C68r",
        "fen": "r1b1kbnr/1pp2ppp/p1pq4/4p3/4P3/3P1N2/PPP2PPP/RNBQ1RK1 b kq - 0 6",
        "hash": "11215736114549174366",
        "name": "Spanish: Exchange, Bronstein, 6.d3"
    },
    "C68s": {
        "eco": "C68s",
        "fen": "r1b1kbnr/1pp2ppp/p1pq4/4p3/4P3/N4N2/PPPP1PPP/R1BQ1RK1 b kq - 3 6",
        "hash": "3667160536962540612",
        "name": "Spanish: Exchange, Bronstein, 6.Na3"
    },
    "C68t": {
        "eco": "C68t",
        "fen": "r1b1kbnr/2p2ppp/p1pq4/1p2p3/4P3/N4N2/PPPP1PPP/R1BQ1RK1 w kq b6 0 7",
        "hash": "5971831387128732025",
        "name": "Spanish: Exchange, Bronstein, 6.Na3 b5"
    },
    "C68u": {
        "eco": "C68u",
        "fen": "r3kbnr/1pp2ppp/p1pqb3/4p3/4P3/N4N2/PPPP1PPP/R1BQ1RK1 w kq - 4 7",
        "hash": "7375996516312211276",
        "name": "Spanish: Exchange, Bronstein, 6.Na3 Be6"
    },
    "C69a": {
        "eco": "C69a",
        "fen": "r1bqkbnr/1pp3pp/p1p2p2/4p3/4P3/5N2/PPPP1PPP/RNBQ1RK1 w kq - 0 6",
        "hash": "5493233342706585834",
        "name": "Spanish: Exchange, Gligoric Variation"
    },
    "C69b": {
        "eco": "C69b",
        "fen": "r1bqkbnr/1pp3pp/p1p2p2/4p3/3PP3/5N2/PPP2PPP/RNBQ1RK1 b kq d3 0 6",
        "hash": "9876056660346322344",
        "name": "Spanish: Exchange, Gligoric, 6.d4"
    },
    "C69c": {
        "eco": "C69c",
        "fen": "r2qkbnr/1pp3pp/p1p2p2/4p3/3PP1b1/2P2N2/PP3PPP/RNBQ1RK1 b kq - 0 7",
        "hash": "18232822672287841476",
        "name": "Spanish: Exchange, Gligoric, 6.d4 Bg4 7.c3"
    },
    "C69d": {
        "eco": "C69d",
        "fen": "r2qk1nr/1pp3pp/p1pb1p2/4p3/3PP1b1/2P2N2/PP3PPP/RNBQ1RK1 w kq - 1 8",
        "hash": "6440026644164734432",
        "name": "Spanish: Exchange, Gligoric, 6.d4 Bg4 7.c3 Bd6"
    },
    "C69e": {
        "eco": "C69e",
        "fen": "r2qkbnr/1pp3pp/p1p2p2/4P3/4P1b1/5N2/PPP2PPP/RNBQ1RK1 b kq - 0 7",
        "hash": "1675612035311862834",
        "name": "Spanish: Exchange, Gligoric, 6.d4 Bg4 7.dxe5"
    },
    "C69f": {
        "eco": "C69f",
        "fen": "r3kbnr/1pp3pp/p1p5/4p3/4P1b1/3R1N2/PPP2PPP/RNB3K1 b kq - 1 9",
        "hash": "4005214930248743605",
        "name": "Spanish: Exchange, Gligoric, 6.d4 Bg4 Queenswap, 9.Rd3"
    },
    "C69g": {
        "eco": "C69g",
        "fen": "r3k1nr/1pp3pp/p1pb4/4p3/4P1b1/3R1N2/PPP2PPP/RNB3K1 w kq - 2 10",
        "hash": "10650182166871010193",
        "name": "Spanish: Exchange, Gligoric, 6.d4 Bg4 Queenswap, 9.Rd3 Bd6"
    },
    "C69h": {
        "eco": "C69h",
        "fen": "r1bqkbnr/1pp3pp/p1p2p2/8/3pP3/5N2/PPP2PPP/RNBQ1RK1 w kq - 0 7",
        "hash": "1328781475543886269",
        "name": "Spanish: Exchange, Gligoric, 6.d4 exd4"
    },
    "C69i": {
        "eco": "C69i",
        "fen": "r1bqkbnr/1pp3pp/p1p2p2/8/3QP3/5N2/PPP2PPP/RNB2RK1 b kq - 0 7",
        "hash": "8054635646846256768",
        "name": "Spanish: Exchange, Gligoric, 6.d4 exd4 7.Nxd4"
    },
    "C69j": {
        "eco": "C69j",
        "fen": "r1bqkbnr/1pp3pp/p4p2/2p5/3NP3/8/PPP2PPP/RNBQ1RK1 w kq - 0 8",
        "hash": "17958525726864467548",
        "name": "Spanish: Exchange, Gligoric, 6.d4 exd4 7.Nxd4 c5"
    },
    "C69k": {
        "eco": "C69k",
        "fen": "r1bqkbnr/1pp3pp/p4p2/2p5/4P3/1N6/PPP2PPP/RNBQ1RK1 b kq - 1 8",
        "hash": "7874746452380983446",
        "name": "Spanish: Exchange, Gligoric, 8.Nb3"
    },
    "C69l": {
        "eco": "C69l",
        "fen": "r3kbnr/1ppb2pp/p4p2/2p5/4P3/1N6/PPP2PPP/RNBR2K1 w kq - 1 10",
        "hash": "901070902307824411",
        "name": "Spanish: Exchange, Gligoric, 8.Nb3 Queenswap, 9...Bd7"
    },
    "C69m": {
        "eco": "C69m",
        "fen": "r3kbnr/1pp3pp/p4p2/2p5/4P1b1/1N6/PPP2PPP/RNBR2K1 w kq - 1 10",
        "hash": "17046981481552969152",
        "name": "Spanish: Exchange, Gligoric, 8.Nb3 Queenswap, 9...Bg4"
    },
    "C69n": {
        "eco": "C69n",
        "fen": "r3kbnr/1pp3pp/p3bp2/2p5/4P3/1N3P2/PPP3PP/RNBR2K1 w kq - 1 11",
        "hash": "3215450474886816346",
        "name": "Spanish: Exchange, Gligoric, 8.Nb3 Queenswap, 9...Bg4 10.f3 Be6"
    },
    "C70": {
        "eco": "C70",
        "fen": "r1bqkbnr/1ppp1ppp/p1n5/4p3/B3P3/5N2/PPPP1PPP/RNBQK2R b KQkq - 1 4",
        "hash": "12170917594475360235",
        "name": "Spanish: 4.Ba4"
    },
    "C71": {
        "eco": "C71",
        "fen": "r1bqkbnr/1pp2ppp/p1np4/4p3/B3P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 0 5",
        "hash": "10474633245981484678",
        "name": "Spanish: Modern Steinitz Defence"
    },
    "C72": {
        "eco": "C72",
        "fen": "r1bqkbnr/1pp2ppp/p1np4/4p3/B3P3/5N2/PPPP1PPP/RNBQ1RK1 b kq - 1 5",
        "hash": "17233063852095765910",
        "name": "Spanish: Modern Steinitz, 5.O-O"
    },
    "C73": {
        "eco": "C73",
        "fen": "r1bqkbnr/1pp2ppp/p1Bp4/4p3/4P3/5N2/PPPP1PPP/RNBQK2R b KQkq - 0 5",
        "hash": "695539507876727454",
        "name": "Spanish: Modern Steinitz, Richter Variation"
    },
    "C74": {
        "eco": "C74",
        "fen": "r1bqkbnr/1pp2ppp/p1np4/4p3/B3P3/2P2N2/PP1P1PPP/RNBQK2R b KQkq - 0 5",
        "hash": "16683487961157282048",
        "name": "Spanish: Modern Steinitz, 5.c3"
    },
    "C75": {
        "eco": "C75",
        "fen": "r2qkbnr/1ppb1ppp/p1np4/4p3/B3P3/2P2N2/PP1P1PPP/RNBQK2R w KQkq - 1 6",
        "hash": "380089877063268657",
        "name": "Spanish: Modern Steinitz, 5.c3 Bd7"
    },
    "C76": {
        "eco": "C76",
        "fen": "r2qkbnr/1ppb1p1p/p1np2p1/4p3/B2PP3/2P2N2/PP3PPP/RNBQK2R w KQkq - 0 7",
        "hash": "3010415883518821944",
        "name": "Spanish: Modern Steinitz, Bronstein Variation"
    },
    "C77a": {
        "eco": "C77a",
        "fen": "r1bqkb1r/1ppp1ppp/p1n2n2/4p3/B3P3/5N2/PPPP1PPP/RNBQK2R w KQkq - 2 5",
        "hash": "17512807785136074365",
        "name": "Spanish: Morphy Defence"
    },
    "C77b": {
        "eco": "C77b",
        "fen": "r1bqkb1r/1ppp1ppp/p1n2n2/4p3/B3P3/3P1N2/PPP2PPP/RNBQK2R b KQkq - 0 5",
        "hash": "6750119798957118889",
        "name": "Spanish: Anderssen Variation"
    },
    "C77c": {
        "eco": "C77c",
        "fen": "r1bqkb1r/2pp1ppp/p1n2n2/1p2p3/B3P3/3P1N2/PPP2PPP/RNBQK2R w KQkq b6 0 6",
        "hash": "4443175021300820116",
        "name": "Spanish: Anderssen, 5...b5"
    },
    "C77d": {
        "eco": "C77d",
        "fen": "r1bqkb1r/1pp2ppp/p1np1n2/4p3/B3P3/3P1N2/PPP2PPP/RNBQK2R w KQkq - 0 6",
        "hash": "7212418391323434180",
        "name": "Spanish: Anderssen, 5...d6"
    },
    "C77e": {
        "eco": "C77e",
        "fen": "r1bqkb1r/1pp2ppp/p1np1n2/4p3/B1P1P3/3P1N2/PP3PPP/RNBQK2R b KQkq c3 0 6",
        "hash": "16732059487369459651",
        "name": "Spanish: Duras Variation"
    },
    "C77f": {
        "eco": "C77f",
        "fen": "r1bqkb1r/1pp2ppp/p1np1n2/4p3/B3P3/2PP1N2/PP3PPP/RNBQK2R b KQkq - 0 6",
        "hash": "1354827885149672258",
        "name": "Spanish: Anderssen, 5...d6 6.c3"
    },
    "C77g": {
        "eco": "C77g",
        "fen": "r1bqkb1r/1pp2p1p/p1np1np1/4p3/B3P3/2PP1N2/PP3PPP/RNBQK2R w KQkq - 0 7",
        "hash": "18120518509651575049",
        "name": "Spanish: Anderssen, 5...d6 6.c3 g6"
    },
    "C77h": {
        "eco": "C77h",
        "fen": "r1bqkb1r/1ppp1ppp/p1n2n2/4p3/B3P3/2N2N2/PPPP1PPP/R1BQK2R b KQkq - 3 5",
        "hash": "621185887674936484",
        "name": "Spanish: Four Knights (Tarrasch) Variation"
    },
    "C77i": {
        "eco": "C77i",
        "fen": "r1bqkb1r/1ppp1ppp/p1B2n2/4p3/4P3/5N2/PPPP1PPP/RNBQK2R b KQkq - 0 5",
        "hash": "7778754406085558885",
        "name": "Spanish: Exchange Deferred"
    },
    "C77j": {
        "eco": "C77j",
        "fen": "r1bqkb1r/1ppp1ppp/p1n2n2/4p3/B2PP3/5N2/PPP2PPP/RNBQK2R b KQkq d3 0 5",
        "hash": "3908229812815266623",
        "name": "Spanish: Centre Attack"
    },
    "C77k": {
        "eco": "C77k",
        "fen": "r1bqkb1r/2pp1ppp/p1n2n2/1p2p3/B2PP3/5N2/PPP2PPP/RNBQK2R w KQkq b6 0 6",
        "hash": "6212918388128202242",
        "name": "Spanish: Centre Attack, 5...b5"
    },
    "C77l": {
        "eco": "C77l",
        "fen": "r1bqkb1r/1ppp1ppp/p4n2/4p3/B2nP3/5N2/PPP2PPP/RNBQK2R w KQkq - 0 6",
        "hash": "17897725903879813155",
        "name": "Spanish: Centre Attack, 5...Nxd4"
    },
    "C77m": {
        "eco": "C77m",
        "fen": "r1bqkb1r/1ppp1ppp/p1n5/4p3/B2Pn3/5N2/PPP2PPP/RNBQK2R w KQkq - 0 6",
        "hash": "10055302219318010924",
        "name": "Spanish: Centre Attack, 5...Nxe4"
    },
    "C77n": {
        "eco": "C77n",
        "fen": "r1bqk2r/1pppbppp/p1n2n2/4p3/B2PP3/5N2/PPP2PPP/RNBQK2R w KQkq - 1 6",
        "hash": "2517689904962056110",
        "name": "Spanish: Centre Attack, 5...Be7"
    },
    "C77o": {
        "eco": "C77o",
        "fen": "r1bqkb1r/1ppp1ppp/p1n2n2/8/B2pP3/5N2/PPP2PPP/RNBQK2R w KQkq - 0 6",
        "hash": "12484779488129390378",
        "name": "Spanish: Centre Attack, 5...exd4"
    },
    "C77p": {
        "eco": "C77p",
        "fen": "r1bqkb1r/1ppp1ppp/p1n2n2/4p3/B3P3/5N2/PPPPQPPP/RNB1K2R b KQkq - 3 5",
        "hash": "7282165319408252409",
        "name": "Spanish: Wormald Attack"
    },
    "C77q": {
        "eco": "C77q",
        "fen": "r1bqk2r/1pppbppp/p1n2n2/4p3/B3P3/5N2/PPPPQPPP/RNB1K2R w KQkq - 4 6",
        "hash": "8197397023563241832",
        "name": "Spanish: Wormald Attack, 5...Be7"
    },
    "C77r": {
        "eco": "C77r",
        "fen": "r1bqkb1r/2pp1ppp/p1n2n2/1p2p3/B3P3/5N2/PPPPQPPP/RNB1K2R w KQkq b6 0 6",
        "hash": "363411489875478724",
        "name": "Spanish: Wormald Attack, 5...b5"
    },
    "C77s": {
        "eco": "C77s",
        "fen": "r1bqk2r/2pp1ppp/p1n2n2/1pb1p3/4P3/1B3N2/PPPPQPPP/RNB1K2R w KQkq - 2 7",
        "hash": "17918206378837592997",
        "name": "Spanish: Wormald Attack, 5...b5 6.Bb3 Bc5"
    },
    "C77t": {
        "eco": "C77t",
        "fen": "r1bqk2r/2pp1ppp/p1n2n2/1pb1p3/4P3/1BP2N2/PP1PQPPP/RNB1K2R b KQkq - 0 7",
        "hash": "10263907358227874851",
        "name": "Spanish: Wormald Attack, 5...b5 6.Bb3 Bc5 7.c3"
    },
    "C77u": {
        "eco": "C77u",
        "fen": "r1bqk2r/2ppbppp/p1n2n2/1p2p3/4P3/1B3N2/PPPPQPPP/RNB1K2R w KQkq - 2 7",
        "hash": "4718495259323633079",
        "name": "Spanish: Wormald Attack, 5...b5 6.Bb3 Be7"
    },
    "C78a": {
        "eco": "C78a",
        "fen": "r1bqkb1r/1ppp1ppp/p1n2n2/4p3/B3P3/5N2/PPPP1PPP/RNBQ1RK1 b kq - 3 5",
        "hash": "10195171887328851309",
        "name": "Spanish: 5.O-O"
    },
    "C78b": {
        "eco": "C78b",
        "fen": "r1bqk2r/1ppp1ppp/p1n2n2/2b1p3/B3P3/5N2/PPPP1PPP/RNBQ1RK1 w kq - 4 6",
        "hash": "2333359986265694190",
        "name": "Spanish: Moeller Defence"
    },
    "C78c": {
        "eco": "C78c",
        "fen": "r1bqk2r/1ppp1ppp/p1n2n2/2b1N3/B3P3/8/PPPP1PPP/RNBQ1RK1 b kq - 0 6",
        "hash": "11394729865596156632",
        "name": "Spanish: Moeller Defence, 6.Nxe5"
    },
    "C78d": {
        "eco": "C78d",
        "fen": "r1bqk2r/1ppp1ppp/p1n2n2/2b1p3/B3P3/2P2N2/PP1P1PPP/RNBQ1RK1 b kq - 0 6",
        "hash": "6249652764038271080",
        "name": "Spanish: Moeller Defence, 6.c3"
    },
    "C78e": {
        "eco": "C78e",
        "fen": "r1bqkb1r/2pp1ppp/p1n2n2/1p2p3/B3P3/5N2/PPPP1PPP/RNBQ1RK1 w kq b6 0 6",
        "hash": "17111687115783358544",
        "name": "Spanish: 5.O-O b5"
    },
    "C78f": {
        "eco": "C78f",
        "fen": "r1bqkb1r/2p2ppp/p1np1n2/1p2p3/4P3/1B3N2/PPPP1PPP/RNBQ1RK1 w kq - 0 7",
        "hash": "9547182507883882719",
        "name": "Spanish: 5.O-O b5 6.Bb3 d6"
    },
    "C78g": {
        "eco": "C78g",
        "fen": "r1bqk2r/2ppbppp/p1n2n2/1p2p3/4P3/1B3N2/PPPP1PPP/RNBQ1RK1 w kq - 2 7",
        "hash": "12180128568917757219",
        "name": "Spanish: 5.O-O b5 6.Bb3 Be7"
    },
    "C78h": {
        "eco": "C78h",
        "fen": "r1bqk2r/2pp1ppp/p1n2n2/1pb1p3/4P3/1B3N2/PPPP1PPP/RNBQ1RK1 w kq - 2 7",
        "hash": "1214201490189011761",
        "name": "Spanish: 5.O-O b5 6.Bb3 Bc5"
    },
    "C78i": {
        "eco": "C78i",
        "fen": "r1bqk2r/2pp1ppp/p1n2n2/1pb1N3/4P3/1B6/PPPP1PPP/RNBQ1RK1 b kq - 0 7",
        "hash": "12581440156993187335",
        "name": "Spanish: 5.O-O b5 6.Bb3 Bc5 7.Nxe5"
    },
    "C78j": {
        "eco": "C78j",
        "fen": "r1bqk2r/2pp1ppp/p1n2n2/1pb1p3/4P3/1BP2N2/PP1P1PPP/RNBQ1RK1 b kq - 0 7",
        "hash": "7350803999907857591",
        "name": "Spanish: 5.O-O b5 6.Bb3 Bc5 7.c3"
    },
    "C78k": {
        "eco": "C78k",
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        "hash": "11136544815342559384",
        "name": "Spanish: 5.O-O b5 6.Bb3 Bc5 7.c3 d6 8.d4"
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    "C78l": {
        "eco": "C78l",
        "fen": "r1bqk2r/2pp1ppp/p1n2n2/1pb1p3/P3P3/1B3N2/1PPP1PPP/RNBQ1RK1 b kq a3 0 7",
        "hash": "8867811133741113087",
        "name": "Spanish: 5.O-O b5 6.Bb3 Bc5 7.a4"
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    "C78m": {
        "eco": "C78m",
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        "hash": "18250140425153951580",
        "name": "Spanish: 5.O-O b5 6.Bb3 Bc5 7.a4 Rb8"
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    "C78n": {
        "eco": "C78n",
        "fen": "r2qkb1r/1bpp1ppp/p1n2n2/1p2p3/4P3/1B3N2/PPPP1PPP/RNBQ1RK1 w kq - 2 7",
        "hash": "960596089312316969",
        "name": "Spanish: Archangelsk Variation"
    },
    "C78o": {
        "eco": "C78o",
        "fen": "r2qkb1r/1bpp1ppp/p1n2n2/1p2p3/3PP3/1B3N2/PPP2PPP/RNBQ1RK1 b kq d3 0 7",
        "hash": "14438987527918330731",
        "name": "Spanish: Archangelsk, 7.d4"
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    "C78p": {
        "eco": "C78p",
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        "hash": "11813076892880713213",
        "name": "Spanish: Archangelsk, 7.d3"
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    "C78q": {
        "eco": "C78q",
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        "hash": "13203438340615706988",
        "name": "Spanish: Archangelsk, 7.d3 Be7"
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    "C78r": {
        "eco": "C78r",
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        "hash": "8903125621906276783",
        "name": "Spanish: Archangelsk, 7.c3"
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    "C78s": {
        "eco": "C78s",
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        "hash": "14283465062343550652",
        "name": "Spanish: Archangelsk, 7.c3 Nxe4"
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    "C78t": {
        "eco": "C78t",
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        "hash": "9935142565269447997",
        "name": "Spanish: Archangelsk, 7.Re1"
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    "C78u": {
        "eco": "C78u",
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        "hash": "7754526913686997333",
        "name": "Spanish: Archangelsk, 7.Re1 Bc5 8.c3 d6"
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    "C78v": {
        "eco": "C78v",
        "fen": "r2qk2r/1bp2ppp/pbnp1n2/1p2p3/P2PP3/1BP2N2/1P3PPP/RNBQR1K1 b kq a3 0 10",
        "hash": "2709728988566067404",
        "name": "Spanish: Archangelsk, Main Line, 10.a4"
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    "C78w": {
        "eco": "C78w",
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        "hash": "9802592504625108682",
        "name": "Spanish: Archangelsk, Main Line, 10.Bg5"
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        "eco": "C78x",
        "fen": "r2qk2r/1bp2ppp/pbnp1n2/1p2p3/3PP3/1BP1BN2/PP3PPP/RN1QR1K1 b kq - 2 10",
        "hash": "4421163916582114956",
        "name": "Spanish: Archangelsk, Main Line, 10.Be3"
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        "eco": "C79",
        "fen": "r1bqkb1r/1pp2ppp/p1np1n2/4p3/B3P3/5N2/PPPP1PPP/RNBQ1RK1 w kq - 0 6",
        "hash": "13026117326258355200",
        "name": "Spanish: Steinitz Deferred"
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    "C80a": {
        "eco": "C80a",
        "fen": "r1bqkb1r/1ppp1ppp/p1n5/4p3/B3n3/5N2/PPPP1PPP/RNBQ1RK1 w kq - 0 6",
        "hash": "3516124427892773502",
        "name": "Spanish: Open"
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    "C80b": {
        "eco": "C80b",
        "fen": "r1bqkb1r/1ppp1ppp/p1n5/4p3/B3n3/2N2N2/PPPP1PPP/R1BQ1RK1 b kq - 1 6",
        "hash": "14653816172613324967",
        "name": "Spanish: Open, Knorre Variation"
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    "C80c": {
        "eco": "C80c",
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        "hash": "12019341784461806074",
        "name": "Spanish: Open, Tartakower Variation"
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    "C80d": {
        "eco": "C80d",
        "fen": "r1bqkb1r/1ppp1ppp/p1n5/4p3/B3n3/5N2/PPPP1PPP/RNBQR1K1 b kq - 1 6",
        "hash": "13006331961587267946",
        "name": "Spanish: Open, 6.Re1"
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    "C80e": {
        "eco": "C80e",
        "fen": "r1bqkb1r/1ppp1ppp/p1B5/2n1p3/8/5N2/PPPP1PPP/RNBQR1K1 b kq - 0 7",
        "hash": "14955540677810525239",
        "name": "Spanish: Open, 6.Re1 Nc5 7.Bxc6"
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        "eco": "C80f",
        "fen": "r1bqkb1r/1ppp1ppp/p1n5/4p3/B2Pn3/5N2/PPP2PPP/RNBQ1RK1 b kq d3 0 6",
        "hash": "17725859323694186300",
        "name": "Spanish: Open, 6.d4"
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        "eco": "C80g",
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        "hash": "7962625418600475433",
        "name": "Spanish: Open, Riga Variation"
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        "eco": "C80h",
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        "hash": "16227196013108908973",
        "name": "Spanish: Open, 6.d4 Be7"
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        "hash": "10807105519919809025",
        "name": "Spanish: Open, 6.d4 b5"
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    "C80j": {
        "eco": "C80j",
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        "hash": "14215208130209065955",
        "name": "Spanish: Open, 7.Bb3"
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        "eco": "C80k",
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        "hash": "4624267103951611333",
        "name": "Spanish: Open, 7.Bb3 d5"
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        "eco": "C80l",
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        "hash": "18333950216389116147",
        "name": "Spanish: Open, 8.Nxe5"
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        "fen": "r1bqkb1r/2p2ppp/p1n5/1p1pP3/4n3/1B3N2/PPP2PPP/RNBQ1RK1 b kq - 0 8",
        "hash": "15902576611497267893",
        "name": "Spanish: Open, 8.dxe5"
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        "hash": "9802612322291657149",
        "name": "Spanish: Open, 8...Be6"
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    "C80o": {
        "eco": "C80o",
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        "hash": "18086847619790123571",
        "name": "Spanish: Open, 8...Be6 9.Be3"
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        "hash": "15089142991542157709",
        "name": "Spanish: Open, Bernstein Variation"
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        "eco": "C80q",
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        "hash": "8969520920465042190",
        "name": "Spanish: Open, Bernstein, 9...Bc5"
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        "hash": "3633897565387210952",
        "name": "Spanish: Open, Bernstein, 9...Nc5"
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        "eco": "C80s",
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        "hash": "12022817027359040937",
        "name": "Spanish: Open, Bernstein, 9...Nc5 10.c3 d4"
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        "fen": "r2qkb1r/2p2ppp/p1n1b3/1pn1P1N1/3p4/1BP5/PP1N1PPP/R1BQ1RK1 b kq - 1 11",
        "hash": "17296991046647684365",
        "name": "Spanish: Open, Bernstein, Karpov Gambit"
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        "fen": "r2qkb1r/2p2ppp/p1n1B3/1pn1P3/3p4/2P2N2/PP1N1PPP/R1BQ1RK1 b kq - 0 11",
        "hash": "1613595646297766408",
        "name": "Spanish: Open, Bernstein, 11.Bxe6"
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        "eco": "C81",
        "fen": "r2qkb1r/2p2ppp/p1n1b3/1p1pP3/4n3/1B3N2/PPP1QPPP/RNB2RK1 b kq - 2 9",
        "hash": "2166038843882205753",
        "name": "Spanish: Open, Keres Attack"
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    "C82a": {
        "eco": "C82a",
        "fen": "r2qkb1r/2p2ppp/p1n1b3/1p1pP3/4n3/1BP2N2/PP3PPP/RNBQ1RK1 b kq - 0 9",
        "hash": "18362063401900811835",
        "name": "Spanish: Open, 9.c3"
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        "eco": "C82b",
        "fen": "r2qkb1r/2p2ppp/p1n1b3/1pnpP3/8/1BP2N2/PP3PPP/RNBQ1RK1 w kq - 1 10",
        "hash": "2151157594524379006",
        "name": "Spanish: Open, Berlin Variation"
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    "C82c": {
        "eco": "C82c",
        "fen": "r2qkb1r/2p2ppp/p1n5/1pnpP3/6b1/2P2N2/PPB2PPP/RNBQ1RK1 w kq - 3 11",
        "hash": "4854434702784189977",
        "name": "Spanish: Open, Berlin, 10.Bc2 Bg4"
    },
    "C82d": {
        "eco": "C82d",
        "fen": "r2qkb1r/2p2ppp/p1n5/1pnpP3/6b1/2P2N2/PPB2PPP/RNBQR1K1 b kq - 4 11",
        "hash": "14405436515074145549",
        "name": "Spanish: Open, Berlin, 10.Bc2 Bg4 11.Re1"
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    "C82e": {
        "eco": "C82e",
        "fen": "r2qkb1r/2p2ppp/p1n5/1pnpP3/6b1/2P2N2/PPBN1PPP/R1BQ1RK1 b kq - 4 11",
        "hash": "1887239995844623913",
        "name": "Spanish: Open, Berlin, 10.Bc2 Bg4 11.Nbd2"
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    "C82f": {
        "eco": "C82f",
        "fen": "r2qk2r/2p1bppp/p1n5/1pnpP3/6b1/2P2N2/PPBN1PPP/R1BQR1K1 b kq - 6 12",
        "hash": "9964407289017891244",
        "name": "Spanish: Open, Berlin, 10.Bc2 Bg4 11.Nbd2 Be7 12.Re1"
    },
    "C82g": {
        "eco": "C82g",
        "fen": "r3k2r/2pqbppp/p1n5/1pnpP3/6b1/2P2N2/PPBN1PPP/R1BQR1K1 w kq - 7 13",
        "hash": "10942597504681618659",
        "name": "Spanish: Open, Berlin, 10.Bc2 Bg4 11.Nbd2 Be7 12.Re1 Qd7"
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    "C82h": {
        "eco": "C82h",
        "fen": "r2q1rk1/2p1bppp/p1n5/1pnpP3/6b1/2P2N2/PPBN1PPP/R1BQR1K1 w - - 7 13",
        "hash": "9286495091451531335",
        "name": "Spanish: Open, Berlin, 10.Bc2 Bg4 11.Nbd2 Be7 12.Re1 O-O"
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    "C82i": {
        "eco": "C82i",
        "fen": "r2qk2r/2p2ppp/p1n1b3/1pbpP3/4n3/1BP2N2/PP3PPP/RNBQ1RK1 w kq - 1 10",
        "hash": "6038873257137753272",
        "name": "Spanish: Open, Italian Variation"
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    "C82j": {
        "eco": "C82j",
        "fen": "r2qk2r/2p2ppp/p1n1b3/1pbpP3/4n3/1BPQ1N2/PP3PPP/RNB2RK1 b kq - 2 10",
        "hash": "17557793285400944079",
        "name": "Spanish: Open, Motzko Attack"
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    "C82k": {
        "eco": "C82k",
        "fen": "r2qk2r/2p2ppp/p1n1b3/1pbpP3/4n3/1BP2N2/PP1N1PPP/R1BQ1RK1 b kq - 2 10",
        "hash": "765853116207785096",
        "name": "Spanish: Open, St. Petersburg Variation"
    },
    "C82l": {
        "eco": "C82l",
        "fen": "r2q1rk1/2p2ppp/p1n1b3/1pbpP3/4n3/2P2N2/PPBN1PPP/R1BQ1RK1 b - - 4 11",
        "hash": "17307703257845157103",
        "name": "Spanish: Open, St. Petersburg, 11.Bc2"
    },
    "C82m": {
        "eco": "C82m",
        "fen": "r2q1rk1/2p3pp/p1n1b3/1pbpPp2/4n3/2P2N2/PPBN1PPP/R1BQ1RK1 w - f6 0 12",
        "hash": "13022849410062064195",
        "name": "Spanish: Open, St. Petersburg, 11.Bc2 f5"
    },
    "C82n": {
        "eco": "C82n",
        "fen": "r2q1rk1/2p2ppp/p1n5/1pbpPb2/4n3/2P2N2/PPBN1PPP/R1BQ1RK1 w - - 5 12",
        "hash": "16088702410885479267",
        "name": "Spanish: Open, Baguio Variation"
    },
    "C82o": {
        "eco": "C82o",
        "fen": "r2q1rk1/2p2ppp/p1n1b3/1pbpP3/8/2P2N2/PPBN1nPP/R1BQ1RK1 w - - 0 12",
        "hash": "17350113338957682817",
        "name": "Spanish: Open, Dilworth Variation"
    },
    "C82p": {
        "eco": "C82p",
        "fen": "r2q1rk1/2p3pp/p1n1bP2/1p1p4/8/2P2N2/PPBN1KPP/R1BQ4 b - - 0 14",
        "hash": "12710961604963696374",
        "name": "Spanish: Open, Dilworth, 14.Kxf2"
    },
    "C82q": {
        "eco": "C82q",
        "fen": "r4rk1/2p3pp/p1n1bq2/1p1p4/8/2P2N2/PPB2KPP/R1BQ1N2 b - - 1 15",
        "hash": "15926616618096684135",
        "name": "Spanish: Open, Dilworth, 14.Kxf2 Qxf6 15.Nf1"
    },
    "C82r": {
        "eco": "C82r",
        "fen": "r4rk1/2p3pp/p1n1bq2/1p1p4/8/2P2N2/PPBN2PP/R1BQ2K1 b - - 1 15",
        "hash": "10200738451172398095",
        "name": "Spanish: Open, Dilworth, 14.Kxf2 Qxf6 15.Kg1"
    },
    "C82s": {
        "eco": "C82s",
        "fen": "r4rk1/2p4p/p1n1bq2/1p1p2p1/8/2P2N2/PPBN2PP/R1BQ2K1 w - g6 0 16",
        "hash": "996348088513227653",
        "name": "Spanish: Open, Dilworth, 14.Kxf2 Qxf6 15.Kg1 g5"
    },
    "C83": {
        "eco": "C83",
        "fen": "r2qk2r/2p1bppp/p1n1b3/1p1pP3/4n3/1BP2N2/PP3PPP/RNBQ1RK1 w kq - 1 10",
        "hash": "16870295704052173482",
        "name": "Spanish: Open, Classical Defence"
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    "C84a": {
        "eco": "C84a",
        "fen": "r1bqk2r/1pppbppp/p1n2n2/4p3/B3P3/5N2/PPPP1PPP/RNBQ1RK1 w kq - 4 6",
        "hash": "11074621136697514492",
        "name": "Spanish: Closed System"
    },
    "C84b": {
        "eco": "C84b",
        "fen": "r1bqk2r/1pppbppp/p1n2n2/4p3/B3P3/2N2N2/PPPP1PPP/R1BQ1RK1 b kq - 5 6",
        "hash": "7072883001461431077",
        "name": "Spanish: Closed, 6.Nc3"
    },
    "C84c": {
        "eco": "C84c",
        "fen": "r1bqk2r/2ppbppp/p1n2n2/1p2p3/B3P3/2N2N2/PPPP1PPP/R1BQ1RK1 w kq b6 0 7",
        "hash": "154115831044531736",
        "name": "Spanish: Closed, 6.Nc3 b5"
    },
    "C84d": {
        "eco": "C84d",
        "fen": "r1bqk2r/2p1bppp/p1np1n2/1p1Np3/4P3/1B3N2/PPPP1PPP/R1BQ1RK1 b kq - 1 8",
        "hash": "12335538090645240258",
        "name": "Spanish: Closed, 6.Nc3 b5 7.Bb3 d6 8.Nd5"
    },
    "C84e": {
        "eco": "C84e",
        "fen": "r1bqk2r/1pppbppp/p1n2n2/4p3/B3P3/3P1N2/PPP2PPP/RNBQ1RK1 b kq - 0 6",
        "hash": "3968857551318278696",
        "name": "Spanish: Closed, 6.d3"
    },
    "C84f": {
        "eco": "C84f",
        "fen": "r1bqk2r/2ppbppp/p1n2n2/1p2p3/B3P3/3P1N2/PPP2PPP/RNBQ1RK1 w kq b6 0 7",
        "hash": "6273616533996330773",
        "name": "Spanish: Closed, 6.d3 b5"
    },
    "C84g": {
        "eco": "C84g",
        "fen": "r1bqk2r/1pppbppp/p1n2n2/4p3/B2PP3/5N2/PPP2PPP/RNBQ1RK1 b kq d3 0 6",
        "hash": "6666975158674814142",
        "name": "Spanish: Closed, Centre Attack"
    },
    "C84h": {
        "eco": "C84h",
        "fen": "r1bqk2r/1pppbppp/p1n2n2/4P3/B2p4/5N2/PPP2PPP/RNBQ1RK1 b kq - 0 7",
        "hash": "11998371068467168975",
        "name": "Spanish: Closed, Centre Attack, 7.e5"
    },
    "C84i": {
        "eco": "C84i",
        "fen": "r1bqk2r/1pppbppp/p1n5/4P3/B2Nn3/8/PPP2PPP/RNBQ1RK1 b kq - 0 8",
        "hash": "18095136919757740315",
        "name": "Spanish: Closed, Centre Attack, 7.e5 Ne4 8.Nxd4"
    },
    "C84j": {
        "eco": "C84j",
        "fen": "r1bqk2r/1pppbppp/p7/4P3/B2nn3/8/PPP2PPP/RNBQ1RK1 w kq - 0 9",
        "hash": "6232228368306561112",
        "name": "Spanish: Closed, Centre Attack, 7.e5 Ne4 8.Nxd4 Nxd4"
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    "C84k": {
        "eco": "C84k",
        "fen": "r1bq1rk1/1pppbppp/p1n5/4P3/B2Nn3/8/PPP2PPP/RNBQ1RK1 w - - 1 9",
        "hash": "17417173067191202032",
        "name": "Spanish: Closed, Centre Attack, 7.e5 Ne4 8.Nxd4 O-O"
    },
    "C84l": {
        "eco": "C84l",
        "fen": "r1bqk2r/1pppbppp/p1n2n2/8/B2pP3/5N2/PPP2PPP/RNBQR1K1 b kq - 1 7",
        "hash": "4850340085985037247",
        "name": "Spanish: Closed, Centre Attack, 7.Re1"
    },
    "C84m": {
        "eco": "C84m",
        "fen": "r1bqk2r/2ppbppp/p1n2n2/1p6/B2pP3/5N2/PPP2PPP/RNBQR1K1 w kq b6 0 8",
        "hash": "2543324918092953218",
        "name": "Spanish: Closed, Centre Attack, 7.Re1 b5"
    },
    "C84n": {
        "eco": "C84n",
        "fen": "r1bqk2r/2ppbppp/p1n2n2/1p2P3/B2p4/5N2/PPP2PPP/RNBQR1K1 b kq - 0 8",
        "hash": "4770053577513783526",
        "name": "Spanish: Closed, Centre Attack, 7.Re1 b5 8.e5"
    },
    "C84o": {
        "eco": "C84o",
        "fen": "r1bq1rk1/1pppbppp/p1n2n2/8/B2pP3/5N2/PPP2PPP/RNBQR1K1 w - - 2 8",
        "hash": "5325281348420641364",
        "name": "Spanish: Closed, Centre Attack, 7.Re1 O-O"
    },
    "C84p": {
        "eco": "C84p",
        "fen": "r1bqnrk1/1pppbppp/p1n5/4P3/B2p4/5N2/PPP2PPP/RNBQR1K1 w - - 1 9",
        "hash": "131711442927189645",
        "name": "Spanish: Closed, Centre Attack, 7.Re1 O-O 8.e5 Ne8"
    },
    "C84q": {
        "eco": "C84q",
        "fen": "r1bqnrk1/1pppbppp/p1n5/4P3/B2p1B2/5N2/PPP2PPP/RN1QR1K1 b - - 2 9",
        "hash": "15746563820097082606",
        "name": "Spanish: Closed, Centre Attack, 7.Re1 O-O 8.e5 Ne8 9.Bf4"
    },
    "C85a": {
        "eco": "C85a",
        "fen": "r1bqk2r/1pppbppp/p1B2n2/4p3/4P3/5N2/PPPP1PPP/RNBQ1RK1 b kq - 0 6",
        "hash": "93070569194681828",
        "name": "Spanish: Closed, Exchange"
    },
    "C85b": {
        "eco": "C85b",
        "fen": "r1bqk2r/1pp1bppp/p1p2n2/4p3/4P3/5N2/PPPP1PPP/RNBQ1RK1 w kq - 0 7",
        "hash": "4006661496443957147",
        "name": "Spanish: Closed, Exchange"
    },
    "C85c": {
        "eco": "C85c",
        "fen": "r1bqk2r/1pp1bppp/p1p2n2/4p3/4P3/5N2/PPPPQPPP/RNB2RK1 b kq - 1 7",
        "hash": "11645194029293024287",
        "name": "Spanish: Closed, Exchange, 7.Qe2"
    },
    "C85d": {
        "eco": "C85d",
        "fen": "r1bqk2r/1pp1bppp/p1p2n2/4p3/4P3/2N2N2/PPPP1PPP/R1BQ1RK1 b kq - 1 7",
        "hash": "14703581831562030402",
        "name": "Spanish: Closed, Exchange, 7.Nc3"
    },
    "C85e": {
        "eco": "C85e",
        "fen": "r2qk2r/1pp1bppp/p1p2n2/4p3/4P1b1/2N2N2/PPPP1PPP/R1BQ1RK1 w kq - 2 8",
        "hash": "14906448537622504360",
        "name": "Spanish: Closed, Exchange, 7.Nc3 Bg4"
    },
    "C85f": {
        "eco": "C85f",
        "fen": "r1bqk2r/1pp1bppp/p1p2n2/4p3/4P3/5N2/PPPP1PPP/RNB1QRK1 b kq - 1 7",
        "hash": "14983267017853233378",
        "name": "Spanish: Closed, Exchange, 7.Qe1"
    },
    "C85g": {
        "eco": "C85g",
        "fen": "r1bqk2r/1pp1bppp/p4n2/2p1p3/4P3/5N2/PPPP1PPP/RNB1QRK1 w kq - 0 8",
        "hash": "4842032729125532973",
        "name": "Spanish: Closed, Exchange, 7.Qe1 c5"
    },
    "C85h": {
        "eco": "C85h",
        "fen": "r1bqk2r/1ppnbppp/p1p5/4p3/4P3/5N2/PPPP1PPP/RNB1QRK1 w kq - 2 8",
        "hash": "3938470791409819927",
        "name": "Spanish: Closed, Exchange, 7.Qe1 Nd7"
    },
    "C85i": {
        "eco": "C85i",
        "fen": "r1bqk2r/1ppnbppp/p1p5/4p3/4P3/1P3N2/P1PP1PPP/RNB1QRK1 b kq - 0 8",
        "hash": "13406690548731251322",
        "name": "Spanish: Closed, Exchange, 7.Qe1 Nd7 8.b3"
    },
    "C85j": {
        "eco": "C85j",
        "fen": "r1bqk2r/1pp1bppp/p1p2n2/4p3/4P3/3P1N2/PPP2PPP/RNBQ1RK1 b kq - 0 7",
        "hash": "11042341068192765007",
        "name": "Spanish: Closed, Exchange, 7.d3"
    },
    "C85k": {
        "eco": "C85k",
        "fen": "r2qk2r/1pp1bppp/p1p2n2/4p3/4P1b1/3P1N2/PPP2PPP/RNBQ1RK1 w kq - 1 8",
        "hash": "11235791127243348645",
        "name": "Spanish: Closed, Exchange, 7.d3 Bg4"
    },
    "C85l": {
        "eco": "C85l",
        "fen": "r1bqk2r/1ppnbppp/p1p5/4p3/4P3/3P1N2/PPP2PPP/RNBQ1RK1 w kq - 1 8",
        "hash": "6951663456178822586",
        "name": "Spanish: Closed, Exchange, 7.d3 Nd7"
    },
    "C85m": {
        "eco": "C85m",
        "fen": "r1bqk2r/1ppnbppp/p1p5/4p3/4P3/3P1N2/PPPN1PPP/R1BQ1RK1 b kq - 2 8",
        "hash": "4114035469709735306",
        "name": "Spanish: Closed, Exchange, 7.d3 Nd7 8.Nbd2"
    },
    "C85n": {
        "eco": "C85n",
        "fen": "r1bq1rk1/1ppnbppp/p1p5/4p3/2N1P3/3P1N2/PPP2PPP/R1BQ1RK1 b - - 4 9",
        "hash": "8861087228850892880",
        "name": "Spanish: Closed, Exchange, 7.d3 Nd7 8.Nbd2 O-O 9.Nc4"
    },
    "C85o": {
        "eco": "C85o",
        "fen": "r1bq1rk1/1ppnb1pp/p1p2p2/4p3/2N1P3/3P1N2/PPP2PPP/R1BQ1RK1 w - - 0 10",
        "hash": "13163425413877425967",
        "name": "Spanish: Closed, Exchange, 7.d3 Nd7 8.Nbd2 O-O 9.Nc4 f6"
    },
    "C85p": {
        "eco": "C85p",
        "fen": "r1bq1rk1/1ppnb1pp/p1p2p2/4p3/2N1P2N/3P4/PPP2PPP/R1BQ1RK1 b - - 1 10",
        "hash": "9736259996780569992",
        "name": "Spanish: Closed, Exchange, 7.d3 Nd7 8.Nbd2 O-O 9.Nc4 f6 10.Nh4"
    },
    "C85q": {
        "eco": "C85q",
        "fen": "r1bq1rk1/1pp1b1pp/p1p2p2/2n1p3/2N1P2N/3P4/PPP2PPP/R1BQ1RK1 w - - 2 11",
        "hash": "12058457096288198850",
        "name": "Spanish: Closed, Exchange, 7.d3 Nd7 8.Nbd2 O-O 9.Nc4 f6 10.Nh4 Nc5"
    },
    "C85r": {
        "eco": "C85r",
        "fen": "r1bq1rk1/1pp1b1pp/p1p2p2/2n1pN2/2N1P3/3P4/PPP2PPP/R1BQ1RK1 b - - 3 11",
        "hash": "4092596522686146106",
        "name": "Spanish: Closed, Exchange, 7.d3 Nd7 8.Nbd2 O-O 9.Nc4 f6 10.Nh4 Nc5 11.Nf5"
    },
    "C86a": {
        "eco": "C86a",
        "fen": "r1bqk2r/1pppbppp/p1n2n2/4p3/B3P3/5N2/PPPPQPPP/RNB2RK1 b kq - 5 6",
        "hash": "1132226622186259064",
        "name": "Spanish: Worrall Attack"
    },
    "C86b": {
        "eco": "C86b",
        "fen": "r1bqk2r/2ppbppp/p1n2n2/1p2p3/B3P3/5N2/PPPPQPPP/RNB2RK1 w kq b6 0 7",
        "hash": "8048513113546997573",
        "name": "Spanish: Worrall Attack, 6...b5"
    },
    "C86c": {
        "eco": "C86c",
        "fen": "r1bqk2r/2p1bppp/p1np1n2/1p2p3/4P3/1B3N2/PPPPQPPP/RNB2RK1 w kq - 0 8",
        "hash": "483181647023448010",
        "name": "Spanish: Worrall Attack, 7...d6"
    },
    "C86d": {
        "eco": "C86d",
        "fen": "r1bqk2r/2p1bppp/p1np1n2/1p2p3/4P3/1BP2N2/PP1PQPPP/RNB2RK1 b kq - 0 8",
        "hash": "8101522443901997132",
        "name": "Spanish: Worrall Attack, 7...d6 8.c3"
    },
    "C86e": {
        "eco": "C86e",
        "fen": "r1bq1rk1/2ppbppp/p1n2n2/1p2p3/4P3/1B3N2/PPPPQPPP/RNB2RK1 w - - 2 8",
        "hash": "3866024668317335372",
        "name": "Spanish: Worrall Attack, 7...O-O"
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    "C86f": {
        "eco": "C86f",
        "fen": "r1bq1rk1/2ppbppp/p1n2n2/1p2p3/4P3/1BP2N2/PP1PQPPP/RNB2RK1 b - - 0 8",
        "hash": "4862788546425237706",
        "name": "Spanish: Worrall Attack, 7...O-O 8.c3"
    },
    "C86g": {
        "eco": "C86g",
        "fen": "r1bq1rk1/2p1bppp/p1np1n2/1p2p3/4P3/1BP2N2/PP1PQPPP/RNB2RK1 w - - 0 9",
        "hash": "8846914695475231143",
        "name": "Spanish: Worrall Attack, 7...O-O 8.c3 d6"
    },
    "C86h": {
        "eco": "C86h",
        "fen": "r1bq1rk1/2p1bppp/p1np1n2/1p2p3/3PP3/1BP2N2/PP2QPPP/RNB2RK1 b - d3 0 9",
        "hash": "13831576593248736485",
        "name": "Spanish: Worrall Attack, 7...O-O 8.c3 d6 9.d4"
    },
    "C86i": {
        "eco": "C86i",
        "fen": "r1bq1rk1/2p1bppp/p1np1n2/1p2p3/4P3/1BP2N2/PP1PQPPP/RNBR2K1 b - - 1 9",
        "hash": "10945082792786923432",
        "name": "Spanish: Worrall Attack, 7...O-O 8.c3 d6 9.Rd1"
    },
    "C86j": {
        "eco": "C86j",
        "fen": "r1bq1rk1/2p1bppp/p1n2n2/1p1pp3/4P3/1BP2N2/PP1PQPPP/RNB2RK1 w - d6 0 9",
        "hash": "14273660389007294188",
        "name": "Spanish: Worrall Attack, 7...O-O 8.c3 d5"
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    "C86k": {
        "eco": "C86k",
        "fen": "r1bq1rk1/2p1bppp/p1n2n2/1p1pp3/4P3/1BPP1N2/PP2QPPP/RNB2RK1 b - - 0 9",
        "hash": "7544366838361572664",
        "name": "Spanish: Worrall Attack, 7...O-O 8.c3 d5 9.d3"
    },
    "C86l": {
        "eco": "C86l",
        "fen": "r2q1rk1/1bp1bppp/p1n2n2/1p1pp3/4P3/1BPP1N2/PP2QPPP/RNB2RK1 w - - 1 10",
        "hash": "15574205275171056291",
        "name": "Spanish: Worrall Attack, 7...O-O 8.c3 d5 9.d3 Bb7"
    },
    "C87a": {
        "eco": "C87a",
        "fen": "r1bqk2r/1pppbppp/p1n2n2/4p3/B3P3/5N2/PPPP1PPP/RNBQR1K1 b kq - 5 6",
        "hash": "2091072881769050856",
        "name": "Spanish: Closed, 6.Re1"
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    "C87b": {
        "eco": "C87b",
        "fen": "r1bqk2r/1pp1bppp/p1np1n2/4p3/B3P3/5N2/PPPP1PPP/RNBQR1K1 w kq - 0 7",
        "hash": "2647674393327811461",
        "name": "Spanish: Closed, Averbakh (Russian) Variation"
    },
    "C87c": {
        "eco": "C87c",
        "fen": "r1bqk2r/1pp1bppp/p1Bp1n2/4p3/4P3/5N2/PPPP1PPP/RNBQR1K1 b kq - 0 7",
        "hash": "13566038186608859037",
        "name": "Spanish: Closed, Averbakh, 7.Bxc6+"
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    "C87d": {
        "eco": "C87d",
        "fen": "r1bqk2r/2p1bppp/p1pp1n2/8/3pP3/5N2/PPP2PPP/RNBQR1K1 w kq - 0 9",
        "hash": "2765057227784800992",
        "name": "Spanish: Closed, Averbakh, 7.Bxc6+ bxc6 8.d4 exd4"
    },
    "C87e": {
        "eco": "C87e",
        "fen": "r1bqk2r/1pp1bppp/p1np1n2/4p3/B3P3/2P2N2/PP1P1PPP/RNBQR1K1 b kq - 0 7",
        "hash": "5937034371008803843",
        "name": "Spanish: Closed, Averbakh, 7.c3"
    },
    "C87f": {
        "eco": "C87f",
        "fen": "r2qk2r/1pp1bppp/p1np1n2/4p3/B3P1b1/2P2N2/PP1P1PPP/RNBQR1K1 w kq - 1 8",
        "hash": "5816222445937801961",
        "name": "Spanish: Closed, Averbakh, 7.c3 Bg4"
    },
    "C87g": {
        "eco": "C87g",
        "fen": "r2qk2r/1pp1bppp/p1np1n2/4p3/B3P1b1/2P2N1P/PP1P1PP1/RNBQR1K1 b kq - 0 8",
        "hash": "13277881368888832795",
        "name": "Spanish: Closed, Averbakh, 7.c3 Bg4 8.h3"
    },
    "C87h": {
        "eco": "C87h",
        "fen": "r2qk2r/1pp1bppp/p1np1n2/4p3/B3P1b1/2PP1N2/PP3PPP/RNBQR1K1 b kq - 0 8",
        "hash": "18308149168383066429",
        "name": "Spanish: Closed, Averbakh, 7.c3 Bg4 8.d3"
    },
    "C87i": {
        "eco": "C87i",
        "fen": "r1bq1rk1/1pp1bppp/p1np1n2/4p3/B3P3/2P2N2/PP1P1PPP/RNBQR1K1 w - - 1 8",
        "hash": "6398622186430160360",
        "name": "Spanish: Closed, Averbakh, 7.c3 O-O"
    },
    "C87j": {
        "eco": "C87j",
        "fen": "r1bq1rk1/1pp1bppp/p1np1n2/4p3/B2PP3/2P2N2/PP3PPP/RNBQR1K1 b - d3 0 8",
        "hash": "11383225535268352170",
        "name": "Spanish: Closed, Averbakh, 7.c3 O-O 8.d4"
    },
    "C87k": {
        "eco": "C87k",
        "fen": "r2q1rk1/1ppbbppp/p1np1n2/4p3/B2PP3/2P2N2/PP3PPP/RNBQR1K1 w - - 1 9",
        "hash": "9167262871351566491",
        "name": "Spanish: Closed, Averbakh, 7.c3 O-O 8.d4 Bd7"
    },
    "C87l": {
        "eco": "C87l",
        "fen": "r2q1rk1/1ppbbppp/p1np1n2/4p3/B2PP3/2P2N2/PP1N1PPP/R1BQR1K1 b - - 2 9",
        "hash": "2762414527524112555",
        "name": "Spanish: Closed, Averbakh, 7.c3 O-O 8.d4 Bd7 9.Nbd2"
    },
    "C87m": {
        "eco": "C87m",
        "fen": "r2qr1k1/1ppbbppp/p1np1n2/4p3/B2PP3/2P2N2/PP1N1PPP/R1BQR1K1 w - - 3 10",
        "hash": "4181546213189152041",
        "name": "Spanish: Closed, Averbakh, 7.c3 O-O 8.d4 Bd7 9.Nbd2 Re8"
    },
    "C87n": {
        "eco": "C87n",
        "fen": "r1bq1rk1/1pp1bppp/p1np1n2/4p3/B3P3/2P2N1P/PP1P1PP1/RNBQR1K1 b - - 0 8",
        "hash": "12700051189588923418",
        "name": "Spanish: Closed, Averbakh, 7.c3 O-O 8.h3"
    },
    "C87o": {
        "eco": "C87o",
        "fen": "r2q1rk1/1ppbbppp/p1np1n2/4p3/B3P3/2P2N1P/PP1P1PP1/RNBQR1K1 w - - 1 9",
        "hash": "5980317506095760427",
        "name": "Spanish: Closed, Averbakh, 7.c3 O-O 8.h3 Bd7"
    },
    "C88a": {
        "eco": "C88a",
        "fen": "r1bqk2r/2ppbppp/p1n2n2/1p2p3/B3P3/5N2/PPPP1PPP/RNBQR1K1 w kq b6 0 7",
        "hash": "9007359377143123925",
        "name": "Spanish: Closed, 6...b5"
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    "C88b": {
        "eco": "C88b",
        "fen": "r2qk2r/1bppbppp/p1n2n2/1p2p3/4P3/1B3N2/PPPP1PPP/RNBQR1K1 w kq - 2 8",
        "hash": "11325643120480356780",
        "name": "Spanish: Closed, Trajkovic Counterattack"
    },
    "C88c": {
        "eco": "C88c",
        "fen": "r1bqk2r/2p1bppp/p1np1n2/1p2p3/4P3/1B3N2/PPPP1PPP/RNBQR1K1 w kq - 0 8",
        "hash": "1442869919908556634",
        "name": "Spanish: Closed 7...d6"
    },
    "C88d": {
        "eco": "C88d",
        "fen": "r1bqk2r/2p1bppp/p1np1n2/1p2p3/4P3/1BP2N2/PP1P1PPP/RNBQR1K1 b kq - 0 8",
        "hash": "7123817290303201500",
        "name": "Spanish: Closed 7...d6 8.c3"
    },
    "C88e": {
        "eco": "C88e",
        "fen": "r1bqk2r/2p1bppp/p2p1n2/np2p3/4P3/1BP2N2/PP1P1PPP/RNBQR1K1 w kq - 1 9",
        "hash": "4020527962468270806",
        "name": "Spanish: Closed 7...d6 8.c3 Na5"
    },
    "C88f": {
        "eco": "C88f",
        "fen": "r1bq1rk1/2ppbppp/p1n2n2/1p2p3/4P3/1B3N2/PPPP1PPP/RNBQR1K1 w - - 2 8",
        "hash": "2815982706962157532",
        "name": "Spanish: Closed, 7...O-O"
    },
    "C88g": {
        "eco": "C88g",
        "fen": "r1bq1rk1/2ppbppp/p1n2n2/1p2p3/4P3/1B1P1N2/PPP2PPP/RNBQR1K1 b - - 0 8",
        "hash": "9921608715949044744",
        "name": "Spanish: Closed, 8.d3"
    },
    "C88h": {
        "eco": "C88h",
        "fen": "r1bq1rk1/2ppbppp/p1n2n2/1p2p3/4P3/1B3N1P/PPPP1PP1/RNBQR1K1 b - - 0 8",
        "hash": "14981150376881587758",
        "name": "Spanish: Closed, 8.h3"
    },
    "C88i": {
        "eco": "C88i",
        "fen": "r2q1rk1/1bp1bppp/p1np1n2/1p2p3/4P3/1B1P1N1P/PPP2PP1/RNBQR1K1 w - - 0 10",
        "hash": "16747094621393705740",
        "name": "Spanish: Closed, 8.h3 Bb7 9.d3 d6"
    },
    "C88j": {
        "eco": "C88j",
        "fen": "r1bq1rk1/2ppbppp/p1n2n2/1p2p3/P3P3/1B3N2/1PPP1PPP/RNBQR1K1 b - a3 0 8",
        "hash": "5538617984413374994",
        "name": "Spanish: Closed, Anti-Marshall 8.a4"
    },
    "C88k": {
        "eco": "C88k",
        "fen": "r1bq1rk1/2ppbppp/p1n2n2/4p3/Pp2P3/1B3N2/1PPP1PPP/RNBQR1K1 w - - 0 9",
        "hash": "3247146357736457041",
        "name": "Spanish: Closed, Anti-Marshall 8.a4 b4"
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    "C88l": {
        "eco": "C88l",
        "fen": "r2q1rk1/1bppbppp/p1n2n2/1p2p3/P3P3/1B3N2/1PPP1PPP/RNBQR1K1 w - - 1 9",
        "hash": "18180283143861187977",
        "name": "Spanish: Closed, Anti-Marshall 8.a4 Bb7"
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    "C88m": {
        "eco": "C88m",
        "fen": "r2q1rk1/1bppbppp/p1n2n2/1p2p3/P3P3/1B1P1N2/1PP2PPP/RNBQR1K1 b - - 0 9",
        "hash": "5974470102510112349",
        "name": "Spanish: Closed, Anti-Marshall 8.a4 Bb7 9.d3"
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    "C88n": {
        "eco": "C88n",
        "fen": "r2q1rk1/1bp1bppp/p1np1n2/1p2p3/P3P3/1B1P1N2/1PP2PPP/RNBQR1K1 w - - 0 10",
        "hash": "7733527762479531824",
        "name": "Spanish: Closed, Anti-Marshall 8.a4 Bb7 9.d3 d6"
    },
    "C88o": {
        "eco": "C88o",
        "fen": "r2q1rk1/1bp1bppp/p1np1n2/1p2p3/P3P3/1BNP1N2/1PP2PPP/R1BQR1K1 b - - 1 10",
        "hash": "10431491380526466537",
        "name": "Spanish: Closed, Anti-Marshall 8.a4 Bb7 9.d3 d6 10.Nc3"
    },
    "C88p": {
        "eco": "C88p",
        "fen": "r2q1rk1/1bp1bppp/p1np1n2/1p2p3/P3P3/1BPP1N2/1P3PPP/RNBQR1K1 b - - 0 10",
        "hash": "2128507307666360502",
        "name": "Spanish: Closed, Anti-Marshall 8.a4 Bb7 9.d3 d6 10.c3"
    },
    "C88q": {
        "eco": "C88q",
        "fen": "r1bq1rk1/2ppbppp/p1n2n2/1p2p3/4P3/1BP2N2/PP1P1PPP/RNBQR1K1 b - - 0 8",
        "hash": "5894818025045966938",
        "name": "Spanish: Closed, 8.c3"
    },
    "C89a": {
        "eco": "C89a",
        "fen": "r1bq1rk1/2p1bppp/p1n2n2/1p1pp3/4P3/1BP2N2/PP1P1PPP/RNBQR1K1 w - d6 0 9",
        "hash": "15322578361675091580",
        "name": "Spanish: Marshall Counterattack"
    },
    "C89b": {
        "eco": "C89b",
        "fen": "r1bq1rk1/2p1bppp/p1n2n2/1p1Pp3/8/1BP2N2/PP1P1PPP/RNBQR1K1 b - - 0 9",
        "hash": "17544812055730867322",
        "name": "Spanish: Marshall, 9.exd5"
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    "C89c": {
        "eco": "C89c",
        "fen": "r1bq1rk1/2p1bppp/p1n5/1p1np3/8/1BP2N2/PP1P1PPP/RNBQR1K1 w - - 0 10",
        "hash": "7824384047730217254",
        "name": "Spanish: Marshall, 9.exd5 Nxd5"
    },
    "C89d": {
        "eco": "C89d",
        "fen": "r1bq1rk1/2p1bppp/p1n5/1p1nN3/8/1BP5/PP1P1PPP/RNBQR1K1 b - - 0 10",
        "hash": "15192399858224854032",
        "name": "Spanish: Marshall, 9.exd5 Nxd5 10.Nxe5"
    },
    "C89e": {
        "eco": "C89e",
        "fen": "r1bq1rk1/2p1bppp/p4n2/1p2R3/8/1BP5/PP1P1PPP/RNBQ2K1 w - - 1 12",
        "hash": "5052237732066871591",
        "name": "Spanish: Marshall, 11.Rxe5 Nf6"
    },
    "C89f": {
        "eco": "C89f",
        "fen": "r1bq1rk1/4bppp/p1p5/1p1nR3/8/1BP5/PP1P1PPP/RNBQ2K1 w - - 0 12",
        "hash": "1186440553419075369",
        "name": "Spanish: Marshall, 11.Rxe5 c6"
    },
    "C89g": {
        "eco": "C89g",
        "fen": "r1bq1rk1/4bppp/p1p5/1p1BR3/8/2P5/PP1P1PPP/RNBQ2K1 b - - 0 12",
        "hash": "8187691128077849458",
        "name": "Spanish: Marshall, 12.Bxd5"
    },
    "C89h": {
        "eco": "C89h",
        "fen": "r1bq1rk1/5ppp/p2b4/1p1p4/3P4/2P1R3/PP3PPP/RNBQ2K1 b - - 2 14",
        "hash": "8951078925370278540",
        "name": "Spanish: Marshall, Kevitz Variation"
    },
    "C89i": {
        "eco": "C89i",
        "fen": "r1bq1rk1/4bppp/p1p5/1p1nR3/8/1BPP4/PP3PPP/RNBQ2K1 b - - 0 12",
        "hash": "13750570142741943549",
        "name": "Spanish: Marshall, 12.d3"
    },
    "C89j": {
        "eco": "C89j",
        "fen": "r1b2rk1/5ppp/p1pb4/1p1n4/7q/1BPP4/PP3PPP/RNBQR1K1 w - - 3 14",
        "hash": "14822734972901827347",
        "name": "Spanish: Marshall, 12.d3 Bd6 13.Re1 Qh4"
    },
    "C89k": {
        "eco": "C89k",
        "fen": "r1bq1rk1/4bppp/p1p5/1p1nR3/3P4/1BP5/PP3PPP/RNBQ2K1 b - d3 0 12",
        "hash": "15366909542031966827",
        "name": "Spanish: Marshall, Main Line (12.d4)"
    },
    "C89l": {
        "eco": "C89l",
        "fen": "r1bq1rk1/5ppp/p1pb4/1p1n4/3P4/1BP5/PP2RPPP/RNBQ2K1 b - - 2 13",
        "hash": "11318480280491881497",
        "name": "Spanish: Marshall, Main Line, 13.Re2"
    },
    "C89m": {
        "eco": "C89m",
        "fen": "r1bq1rk1/5ppp/p1pb4/1p1n4/3P4/1BP5/PP3PPP/RNBQR1K1 b - - 2 13",
        "hash": "6350821375086542203",
        "name": "Spanish: Marshall, Main Line, 13.Re1"
    },
    "C89n": {
        "eco": "C89n",
        "fen": "r1b2rk1/5ppp/p1pb4/1p1n4/3P4/1BP3Pq/PP3P1P/RNBQR1K1 w - - 1 15",
        "hash": "5925887909347495521",
        "name": "Spanish: Marshall, Main Line, 14.g3 Qh3"
    },
    "C89o": {
        "eco": "C89o",
        "fen": "r1b2rk1/5ppp/p1pb4/1p1n4/3PR3/1BP3Pq/PP3P1P/RNBQ2K1 b - - 2 15",
        "hash": "15251866948470945850",
        "name": "Spanish: Marshall, Main Line, 15.Re4"
    },
    "C89p": {
        "eco": "C89p",
        "fen": "r1b2rk1/5ppp/p1pb4/1p1n4/3P4/1BP1B1Pq/PP3P1P/RN1QR1K1 b - - 2 15",
        "hash": "2392607965632435695",
        "name": "Spanish: Marshall, Main Line, 15.Be3"
    },
    "C89q": {
        "eco": "C89q",
        "fen": "4rrk1/5ppp/p1pb4/1p1n4/3P2b1/1BPQB1Pq/PP3P1P/RN2R1K1 w - - 5 17",
        "hash": "2507405529085413312",
        "name": "Spanish: Marshall, Main Line, 15.Be3 Bg4 16.Qd3 Rae8"
    },
    "C89r": {
        "eco": "C89r",
        "fen": "4rrk1/6pp/p1pb4/1p1n1p2/3P2b1/1BPQB1Pq/PP1N1P1P/R3R1K1 w - f6 0 18",
        "hash": "17279686079796544046",
        "name": "Spanish: Marshall, Main Line, Pawn Push Variation"
    },
    "C89s": {
        "eco": "C89s",
        "fen": "5rk1/5ppp/p1pbr3/1p1n4/3P2b1/1BPQB1Pq/PP1N1P1P/R3R1K1 w - - 7 18",
        "hash": "12527594676726446474",
        "name": "Spanish: Marshall, Main Line, Classical Variation"
    },
    "C89t": {
        "eco": "C89t",
        "fen": "5rk1/5ppp/p1pbr3/1p1n4/2PP2b1/1B1QB1Pq/PP1N1P1P/R3R1K1 b - - 0 18",
        "hash": "12679240343498168322",
        "name": "Spanish: Marshall, Main Line, Classical, 18.c4"
    },
    "C89u": {
        "eco": "C89u",
        "fen": "5rk1/5ppp/p1pbr3/1p1B4/3P2b1/2PQB1Pq/PP1N1P1P/R3R1K1 b - - 0 18",
        "hash": "14703518493513434577",
        "name": "Spanish: Marshall, Main Line, Classical, 18.Bxd5"
    },
    "C89v": {
        "eco": "C89v",
        "fen": "5rk1/5ppp/p1pbr3/1p1n4/3P2b1/1BP1B1Pq/PP1N1P1P/R3RQK1 b - - 8 18",
        "hash": "16593550071150216293",
        "name": "Spanish: Marshall, Main Line, Classical, 18.Qf1"
    },
    "C89w": {
        "eco": "C89w",
        "fen": "5rk1/5ppp/p1pbr3/1p1n4/P2P2b1/1BPQB1Pq/1P1N1P1P/R3R1K1 b - a3 0 18",
        "hash": "14272903447166151748",
        "name": "Spanish: Marshall, Main Line, Classical, 18.a4"
    },
    "C89x": {
        "eco": "C89x",
        "fen": "5rk1/5ppp/p1pbr3/1p1n3q/P2P2b1/1BPQB1P1/1P1N1P1P/R3R1K1 w - - 1 19",
        "hash": "8834900859833762737",
        "name": "Spanish: Marshall, Main Line, Classical, Spassky Variation"
    },
    "C89y": {
        "eco": "C89y",
        "fen": "5rk1/6pp/p1pbr3/1p1n1p2/P2P2b1/1BPQB1Pq/1P1N1P1P/R3R1K1 w - f6 0 19",
        "hash": "5943885684988264858",
        "name": "Spanish: Marshall, Main Line, Classical, 18.a4 f5"
    },
    "C90a": {
        "eco": "C90a",
        "fen": "r1bq1rk1/2p1bppp/p1np1n2/1p2p3/4P3/1BP2N2/PP1P1PPP/RNBQR1K1 w - - 0 9",
        "hash": "7526658070736734519",
        "name": "Spanish: Closed, 8...d6"
    },
    "C90b": {
        "eco": "C90b",
        "fen": "r1bq1rk1/2p1bppp/p1np1n2/1p2p3/4P3/2P2N2/PPBP1PPP/RNBQR1K1 b - - 1 9",
        "hash": "10974543473352722619",
        "name": "Spanish: Closed, Lutikov Variation"
    },
    "C90c": {
        "eco": "C90c",
        "fen": "r1bq1rk1/2p1bppp/p1np1n2/1p2p3/4P3/PBP2N2/1P1P1PPP/RNBQR1K1 b - - 0 9",
        "hash": "11810758765431195511",
        "name": "Spanish: Closed, Suetin Variation"
    },
    "C90d": {
        "eco": "C90d",
        "fen": "r1bq1rk1/2p1bppp/p1np1n2/1p2p3/P3P3/1BP2N2/1P1P1PPP/RNBQR1K1 b - a3 0 9",
        "hash": "269496137927679225",
        "name": "Spanish: Closed, 8...d6 9.a4"
    },
    "C90e": {
        "eco": "C90e",
        "fen": "r1bq1rk1/2p1bppp/p1np1n2/1p2p3/4P3/1BPP1N2/PP3PPP/RNBQR1K1 b - - 0 9",
        "hash": "14326175223597478627",
        "name": "Spanish: Closed, Pilnik Variation"
    },
    "C90f": {
        "eco": "C90f",
        "fen": "r1bq1rk1/2p1bpp1/p1np1n1p/1p2p3/4P3/1BPP1N2/PP3PPP/RNBQR1K1 w - - 0 10",
        "hash": "6063963930350582774",
        "name": "Spanish: Closed, Pilnik, 9...h6"
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    "C90g": {
        "eco": "C90g",
        "fen": "r1bq1rk1/2p1bppp/p2p1n2/np2p3/4P3/1BPP1N2/PP3PPP/RNBQR1K1 w - - 1 10",
        "hash": "10648733297573302505",
        "name": "Spanish: Closed, Pilnik, 9...Na5"
    },
    "C90h": {
        "eco": "C90h",
        "fen": "r1bq1rk1/4bppp/p2p1n2/npp1p3/4P3/2PP1N2/PPBN1PPP/R1BQR1K1 b - - 1 11",
        "hash": "15916259604268577320",
        "name": "Spanish: Closed, Pilnik, 11.Nbd2"
    },
    "C90i": {
        "eco": "C90i",
        "fen": "r1b2rk1/2q1bppp/p2p1n2/npp1p3/4P3/2PP1N2/PPBN1PPP/R1BQR1K1 w - - 2 12",
        "hash": "15780286441996205353",
        "name": "Spanish: Closed, Pilnik, 11.Nbd2 Qc7"
    },
    "C90j": {
        "eco": "C90j",
        "fen": "r1bq1rk1/4bppp/p1np1n2/1pp1p3/4P3/2PP1N2/PPBN1PPP/R1BQR1K1 w - - 2 12",
        "hash": "9941347896717692962",
        "name": "Spanish: Closed, Pilnik, 11.Nbd2 Nc6"
    },
    "C90k": {
        "eco": "C90k",
        "fen": "r1bqr1k1/4bppp/p2p1n2/npp1p3/4P3/2PP1N2/PPBN1PPP/R1BQR1K1 w - - 2 12",
        "hash": "13884648813020518314",
        "name": "Spanish: Closed, Pilnik, 11.Nbd2 Re8"
    },
    "C90l": {
        "eco": "C90l",
        "fen": "r1bqr1k1/4bppp/p1np1n2/1pp1p3/4P3/2PP1N2/PPB2PPP/R1BQRNK1 w - - 4 13",
        "hash": "2318458654319972475",
        "name": "Spanish: Closed, Pilnik, 12.Nf1 Nc6"
    },
    "C90m": {
        "eco": "C90m",
        "fen": "r1bqrbk1/5ppp/p2p1n2/npp1p3/4P3/2PP1N2/PPB2PPP/R1BQRNK1 w - - 4 13",
        "hash": "7059261327641616096",
        "name": "Spanish: Closed, Pilnik, 12.Nf1 Bf8"
    },
    "C90n": {
        "eco": "C90n",
        "fen": "r1bqr1k1/4bpp1/p2p1n1p/npp1p3/4P3/2PP1N2/PPB2PPP/R1BQRNK1 w - - 0 13",
        "hash": "16702918975650331492",
        "name": "Spanish: Closed, Pilnik, 12.Nf1 h6"
    },
    "C91a": {
        "eco": "C91a",
        "fen": "r1bq1rk1/2p1bppp/p1np1n2/1p2p3/3PP3/1BP2N2/PP3PPP/RNBQR1K1 b - d3 0 9",
        "hash": "12484294866112488565",
        "name": "Spanish: Closed, 9.d4"
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    "C91b": {
        "eco": "C91b",
        "fen": "r2q1rk1/2p1bppp/p1np1n2/1p2p3/3PP1b1/1BP2N2/PP3PPP/RNBQR1K1 w - - 1 10",
        "hash": "12651431844413909663",
        "name": "Spanish: Closed, Bogoljubow Variation"
    },
    "C91c": {
        "eco": "C91c",
        "fen": "r2q1rk1/2p1bppp/p1np1n2/1p2p3/3PP1b1/1BP1BN2/PP3PPP/RN1QR1K1 b - - 2 10",
        "hash": "15896107822834856209",
        "name": "Spanish: Closed, Bogoljubow, 10.Be3"
    },
    "C91d": {
        "eco": "C91d",
        "fen": "r2q1rk1/2p1bppp/p1np1n2/1p6/3pP1b1/1BP1BN2/PP3PPP/RN1QR1K1 w - - 0 11",
        "hash": "5180365893071938820",
        "name": "Spanish: Closed, Bogoljubow, 10.Be3 exd4"
    },
    "C91e": {
        "eco": "C91e",
        "fen": "r2q1rk1/2p1bppp/p1np1n2/1p1Pp3/4P1b1/1BP2N2/PP3PPP/RNBQR1K1 b - - 0 10",
        "hash": "1556742889168288962",
        "name": "Spanish: Closed, Bogoljubow, 10.d5"
    },
    "C91f": {
        "eco": "C91f",
        "fen": "r2q1rk1/2p1bppp/p2p1n2/np1Pp3/4P1b1/1BP2N2/PP3PPP/RNBQR1K1 w - - 1 11",
        "hash": "4651518701789585096",
        "name": "Spanish: Closed, Bogoljubow, 10.d5 Na5"
    },
    "C91g": {
        "eco": "C91g",
        "fen": "r1q2rk1/2p1bppp/p2p1n2/np1Pp3/4P1b1/2P2N2/PPB2PPP/RNBQR1K1 w - - 3 12",
        "hash": "7105484161181451507",
        "name": "Spanish: Closed, Bogoljubow, 10.d5 Na5 11.Bc2 Qc8"
    },
    "C91h": {
        "eco": "C91h",
        "fen": "r2q1rk1/4bppp/p1pp1n2/np1Pp3/4P1b1/2P2N2/PPB2PPP/RNBQR1K1 w - - 0 12",
        "hash": "2507951893550173439",
        "name": "Spanish: Closed, Bogoljubow, 10.d5 Na5 11.Bc2 c6"
    },
    "C91i": {
        "eco": "C91i",
        "fen": "r1bq1rk1/4bppp/p1pp1n2/np1Pp3/4P3/2P2N1P/PPB2PP1/RNBQR1K1 w - - 1 13",
        "hash": "14478544457231059943",
        "name": "Spanish: Closed, Bogoljubow, 10.d5 Na5 11.Bc2 c6 12.h3 Bc8"
    },
    "C92a": {
        "eco": "C92a",
        "fen": "r1bq1rk1/2p1bppp/p1np1n2/1p2p3/4P3/1BP2N1P/PP1P1PP1/RNBQR1K1 b - - 0 9",
        "hash": "9261602184711422149",
        "name": "Spanish: Closed, 9.h3"
    },
    "C92b": {
        "eco": "C92b",
        "fen": "r1bq1rk1/2p1bppp/2np1n2/pp2p3/4P3/1BP2N1P/PP1P1PP1/RNBQR1K1 w - - 0 10",
        "hash": "3223645521875808640",
        "name": "Spanish: Closed, Keres Variation"
    },
    "C92c": {
        "eco": "C92c",
        "fen": "r2q1rk1/2p1bppp/p1npbn2/1p2p3/4P3/1BP2N1P/PP1P1PP1/RNBQR1K1 w - - 1 10",
        "hash": "15294014094391229389",
        "name": "Spanish: Closed, Kholmov Variation"
    },
    "C92d": {
        "eco": "C92d",
        "fen": "r2q1rk1/2p1bppp/p1np1n2/1p2p3/3PP3/1QP2N1P/PP3PP1/RNB1R1K1 b - - 0 11",
        "hash": "14068471730505497391",
        "name": "Spanish: Closed, Kholmov, 11.Qxb3"
    },
    "C92e": {
        "eco": "C92e",
        "fen": "r1bq1rk1/2pnbppp/p1np4/1p2p3/4P3/1BP2N1P/PP1P1PP1/RNBQR1K1 w - - 1 10",
        "hash": "8773242676338805040",
        "name": "Spanish: Closed, Karpov Variation"
    },
    "C92f": {
        "eco": "C92f",
        "fen": "r1bq1rk1/2pn1ppp/p1np1b2/1p2p3/3PP3/1BP2N1P/PP3PP1/RNBQR1K1 w - - 1 11",
        "hash": "11449434162266612883",
        "name": "Spanish: Closed, Karpov Variation, 10.d4 Bf6"
    },
    "C92g": {
        "eco": "C92g",
        "fen": "r1bq1rk1/2pn1ppp/p1np1b2/1p2p3/P2PP3/1BP2N1P/1P3PP1/RNBQR1K1 b - a3 0 11",
        "hash": "17667042278143455581",
        "name": "Spanish: Closed, Karpov Variation, 10.d4 Bf6 11.a4"
    },
    "C92h": {
        "eco": "C92h",
        "fen": "r2q1rk1/1bpn1ppp/p1np1b2/1p2p3/P2PP3/NBP2N1P/1P3PP1/R1BQR1K1 b - - 2 12",
        "hash": "4781531490331455752",
        "name": "Spanish: Closed, Karpov Variation, 10.d4 Bf6 11.a4 Bb7 12.Na3"
    },
    "C92i": {
        "eco": "C92i",
        "fen": "r2q1rk1/1bp1bppp/p1np1n2/1p2p3/4P3/1BP2N1P/PP1P1PP1/RNBQR1K1 w - - 1 10",
        "hash": "3465408422837907294",
        "name": "Spanish: Closed, Zaitsev (Flohr) Variation"
    },
    "C92j": {
        "eco": "C92j",
        "fen": "r2q1rk1/1bp1bppp/p1np1n2/1p2p3/3PP3/1BP2N1P/PP3PP1/RNBQR1K1 b - d3 0 10",
        "hash": "17663879921517150748",
        "name": "Spanish: Closed, Zaitsev, 10.d4"
    },
    "C92k": {
        "eco": "C92k",
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        "hash": "16821914874616457118",
        "name": "Spanish: Closed, Zaitsev, 10.d4 Re8"
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        "eco": "C92l",
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        "hash": "13808480274047262522",
        "name": "Spanish: Closed, Zaitsev, 11.Ng5"
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        "eco": "C92m",
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        "hash": "12690521499994558382",
        "name": "Spanish: Closed, Zaitsev, 11.Nbd2"
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        "eco": "C92n",
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        "hash": "13057098944092213345",
        "name": "Spanish: Closed, Zaitsev, 11.Nbd2 Bf8 12.d5 Nb8"
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        "eco": "C92o",
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        "hash": "6118385806552588979",
        "name": "Spanish: Closed, Zaitsev, 12.Bc2"
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        "eco": "C92p",
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        "hash": "8020216975500586367",
        "name": "Spanish: Closed, Zaitsev, 12.a3"
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        "eco": "C92q",
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        "hash": "14922896247606638321",
        "name": "Spanish: Closed, Zaitsev, 12.a4"
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        "hash": "6768783195162689508",
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        "hash": "12526457745326243432",
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        "hash": "3938644651286162045",
        "name": "Spanish: Closed, Zaitsev, 12.a4 h6 13.Bc2 exd4"
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        "hash": "5358420626437343622",
        "name": "Spanish: Closed, Zaitsev, 12.a4 h6 13.Bc2 exd4 14.cxd4 Nb4 15.Bb1 c5"
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        "eco": "C93",
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        "hash": "1328730645670693328",
        "name": "Spanish: Closed, Smyslov Defence"
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        "hash": "3128324985775809990",
        "name": "Spanish: Closed, Breyer Defence"
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        "hash": "4657694067045871624",
        "name": "Spanish: Closed, Breyer, Matulovic Variation"
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        "hash": "9641865037621878290",
        "name": "Spanish: Closed, Breyer, 10.d3"
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        "hash": "13127344714554356702",
        "name": "Spanish: Closed, Breyer, 10.d3 Nbd7"
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        "hash": "17240634887067704302",
        "name": "Spanish: Closed, Breyer, 10.d3 Nbd7 11.Nbd2"
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        "hash": "6904935847241593973",
        "name": "Spanish: Closed, Breyer, 10.d3 Nbd7 11.Nbd2 Bb7"
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        "eco": "C95a",
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        "hash": "17176488554825271428",
        "name": "Spanish: Closed, Breyer, 10.d4"
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        "hash": "15977748966695806280",
        "name": "Spanish: Closed, Breyer, 10.d4 Nbd7"
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        "hash": "17009985025761109999",
        "name": "Spanish: Closed, Breyer, Simagin Variation"
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        "hash": "2010304448761331328",
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        "hash": "16110254506584605888",
        "name": "Spanish: Closed, Breyer, Arseniev Variation"
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        "hash": "9570965503551802744",
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        "hash": "14158130209009296239",
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        "hash": "15576278931287377645",
        "name": "Spanish: Closed, Breyer, Main Line"
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        "hash": "8277469355730496201",
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        "hash": "12962329243967738659",
        "name": "Spanish: Closed, Breyer, Main Line, 13.a4"
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        "hash": "7899835499823145782",
        "name": "Spanish: Closed, Breyer, Main Line, 13.Nf1"
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        "hash": "16498147310824481284",
        "name": "Spanish: Closed, Breyer, Main Line, 14.Ng3 g6"
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        "hash": "10321211844656740298",
        "name": "Spanish: Closed, Breyer, Main Line, 14.Ng3 g6 15.a4"
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        "hash": "7587895580208577719",
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        "hash": "818080503132094567",
        "name": "Spanish: Closed, Breyer, Main Line, 15.a4 c5 16.d5 c4"
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        "eco": "C96a",
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        "hash": "15389073603174097615",
        "name": "Spanish: Closed, Chigorin"
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        "hash": "2713874453717721923",
        "name": "Spanish: Closed, Chigorin, 10.Bc2"
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        "hash": "13246057925523992824",
        "name": "Spanish: Closed, Chigorin, 10...c6"
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        "hash": "8428877079996043963",
        "name": "Spanish: Closed, Chigorin, Rossolimo Variation"
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        "hash": "10752861892956949720",
        "name": "Spanish: Closed, Chigorin, 10...Bb7"
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        "hash": "14112117123343788094",
        "name": "Spanish: Closed, Chigorin, 10...c5"
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        "hash": "7889334666401780714",
        "name": "Spanish: Closed, Chigorin, 11.d3"
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        "hash": "4065526577355633120",
        "name": "Spanish: Closed, Chigorin, 11.d3 Nc6"
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        "hash": "499161147263681916",
        "name": "Spanish: Closed, Chigorin, 11.d4"
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        "hash": "6481764387213307066",
        "name": "Spanish: Closed, Chigorin, 11.d4 cxd4"
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        "hash": "13149711495128853223",
        "name": "Spanish: Closed, Chigorin, 11.d4 Bb7"
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        "hash": "17227271938594505431",
        "name": "Spanish: Closed, Chigorin, 11.d4 Bb7 12.Nbd2"
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        "hash": "6051231094364743542",
        "name": "Spanish: Closed, Chigorin, Borisenko Variation"
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        "hash": "18422646960408759433",
        "name": "Spanish: Closed, Chigorin, Keres Variation"
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        "hash": "18003809776543321471",
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        "hash": "68221717274643069",
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        "hash": "13473112132173814816",
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        "hash": "7126285035444205229",
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        "hash": "6457290127996805709",
        "name": "Spanish: Closed, Chigorin, 11.d4 Qc7 12.Nbd2"
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        "hash": "16792990266791316950",
        "name": "Spanish: Closed, Chigorin, 12...Bb7"
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        "hash": "5029711993927501775",
        "name": "Spanish: Closed, Chigorin, 12...Re8"
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        "hash": "422644592629359327",
        "name": "Spanish: Closed, Chigorin, 12...Rd8"
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        "hash": "13500975270118044284",
        "name": "Spanish: Closed, Chigorin, 12...Bd7"
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        "fen": "r4rk1/2qbbppp/p2p1n2/npp1p3/3PP3/2P2N1P/PPB2PP1/R1BQRNK1 b - - 4 13",
        "hash": "1069267204589721511",
        "name": "Spanish: Closed, Chigorin, 12...Bd7 13.Nf1"
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        "hash": "14018121805320585570",
        "name": "Spanish: Closed, Chigorin, 12...Bd7 13.Nf1 Nc4"
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        "hash": "1335048576127693349",
        "name": "Spanish: Closed, Chigorin, 12...Bd7 13.Nf1 Rfe8"
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        "hash": "12561624099238232496",
        "name": "Spanish: Closed, Chigorin, Yugoslav System"
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        "hash": "904042501166219335",
        "name": "Spanish: Closed, Chigorin, 12...Nc6"
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        "eco": "C98b",
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        "hash": "8316159553414764331",
        "name": "Spanish: Closed, Chigorin, Rauzer Attack"
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    "C98c": {
        "eco": "C98c",
        "fen": "r1b2rk1/2q1bppp/p1n2n2/1pp1p3/4P3/2P2N1P/PPB2PP1/R1BQRNK1 b - - 1 14",
        "hash": "2285831698771221605",
        "name": "Spanish: Closed, Chigorin, Rauzer, 14.Nf1"
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    "C98d": {
        "eco": "C98d",
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        "hash": "5404448221426837357",
        "name": "Spanish: Closed, Chigorin, Rauzer, 14.Nf1 Be6"
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    "C98e": {
        "eco": "C98e",
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    "C98f": {
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        "hash": "16398912992890352656",
        "name": "Spanish: Closed, Chigorin, 12...Nc6 13.d5 Na5"
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    "C98g": {
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        "hash": "256412867905143289",
        "name": "Spanish: Closed, Chigorin, 12...Nc6 13.d5 Nd8"
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    "C98h": {
        "eco": "C98h",
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        "hash": "13115928541514490914",
        "name": "Spanish: Closed, Chigorin, 12...Nc6 13.d5 Nd8 14.Nf1"
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    "C98i": {
        "eco": "C98i",
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        "hash": "7514124902287316023",
        "name": "Spanish: Closed, Chigorin, 12...Nc6 13.d5 Nd8 14.a4"
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    "C99a": {
        "eco": "C99a",
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        "hash": "469039693541313419",
        "name": "Spanish: Closed, Chigorin, 12...cxd4"
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        "hash": "17759354132578551615",
        "name": "Spanish: Closed, Chigorin, 13...Rd8"
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    "C99c": {
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        "hash": "5257237895313643420",
        "name": "Spanish: Closed, Chigorin, 13...Bd7"
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    "C99d": {
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        "hash": "13715959558528330722",
        "name": "Spanish: Closed, Chigorin, 13...Bd7 14.Nf1 Rac8 15.Ne3"
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    "C99e": {
        "eco": "C99e",
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        "hash": "1919871365078067254",
        "name": "Spanish: Closed, Chigorin, 13...Bb7"
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    "C99f": {
        "eco": "C99f",
        "fen": "2r2rk1/1bq1bppp/p2p1n2/np2p3/3PP3/5N1P/PPB1RPP1/R1BQ1NK1 b - - 4 15",
        "hash": "9551577480234367485",
        "name": "Spanish: Closed, Chigorin, 13...Bb7 14.Nf1 Rac8 15.Re2"
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    "C99g": {
        "eco": "C99g",
        "fen": "r4rk1/1bq1bppp/p2p1n2/np1Pp3/4P3/5N1P/PPBN1PP1/R1BQR1K1 b - - 0 14",
        "hash": "11577773354430152299",
        "name": "Spanish: Closed, Chigorin, 13...Bb7 14.d5"
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    "C99h": {
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        "hash": "13180420894164059664",
        "name": "Spanish: Closed, Chigorin, 13...Bb7 14.d5 Rac8"
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    "C99i": {
        "eco": "C99i",
        "fen": "r1b2rk1/2q1bppp/p1np1n2/1p2p3/3PP3/5N1P/PPBN1PP1/R1BQR1K1 w - - 1 14",
        "hash": "18384716931103073703",
        "name": "Spanish: Closed, Chigorin, 13...Nc6"
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    "C99j": {
        "eco": "C99j",
        "fen": "r1b2rk1/2q1bppp/p1np1n2/1p2p3/3PP3/5N1P/PPB2PP1/R1BQRNK1 b - - 2 14",
        "hash": "5379680618616553596",
        "name": "Spanish: Closed, Chigorin, 13...Nc6 14.Nf1"
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    "C99k": {
        "eco": "C99k",
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        "hash": "4984325867609306106",
        "name": "Spanish: Closed, Chigorin, 13...Nc6 14.d5"
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    "C99l": {
        "eco": "C99l",
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        "hash": "14418163579002840360",
        "name": "Spanish: Closed, Chigorin, 13...Nc6 14.Nb3"
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    "C99m": {
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        "hash": "651276542857080401",
        "name": "Spanish: Closed, Chigorin, 13...Nc6 14.Nb3 a5 15.Be3 a4"
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    "C99n": {
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        "fen": "r1b2rk1/2q1bppp/3p1n2/1p2p3/pn1PP3/4BN1P/PPBN1PP1/R2QR1K1 w - - 2 17",
        "hash": "2652000850575090410",
        "name": "Spanish: Closed, Chigorin, 13...Nc6 14.Nb3 a5 15.Be3 a4 16.Nbd2 Nb4"
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    "C99o": {
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        "fen": "r4rk1/2qbbppp/2np1n2/1p2p3/p2PP3/4BN1P/PPBN1PP1/R2QR1K1 w - - 2 17",
        "hash": "15923614495904300783",
        "name": "Spanish: Closed, Chigorin, 13...Nc6 14.Nb3 a5 15.Be3 a4 16.Nbd2 Bd7"
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    "D00a": {
        "eco": "D00a",
        "fen": "rnbqkbnr/ppp1pppp/8/3p4/3P4/8/PPP1PPPP/RNBQKBNR w KQkq d6 0 2",
        "hash": "460664201775194104",
        "name": "Queen's Pawn Game"
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    "D00b": {
        "eco": "D00b",
        "fen": "rnbqkbnr/ppp1pppp/8/3p4/3P4/2P5/PP2PPPP/RNBQKBNR b KQkq - 0 2",
        "hash": "8124039897036918910",
        "name": "Queen's Pawn: 2.c3"
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    "D00c": {
        "eco": "D00c",
        "fen": "rnbqkbnr/ppp1pppp/8/3p4/3P1B2/8/PPP1PPPP/RN1QKBNR b KQkq - 1 2",
        "hash": "15938376687770432923",
        "name": "Queen's Pawn: Mason Variation"
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    "D00d": {
        "eco": "D00d",
        "fen": "rnbqkbnr/ppp1pppp/8/3p4/3P4/4P3/PPP2PPP/RNBQKBNR b KQkq - 0 2",
        "hash": "12342634936926410588",
        "name": "Queen's Pawn: 2.e3"
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    "D00e": {
        "eco": "D00e",
        "fen": "rnbqkb1r/ppp1pppp/5n2/3p4/3P4/3BP3/PPP2PPP/RNBQK1NR b KQkq - 2 3",
        "hash": "11937437613677974713",
        "name": "Queen's Pawn: Stonewall Attack"
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    "D00f": {
        "eco": "D00f",
        "fen": "rnbqkbnr/ppp1pppp/8/3p2B1/3P4/8/PPP1PPPP/RN1QKBNR b KQkq - 1 2",
        "hash": "13852734423407412272",
        "name": "Hodgson Attack (Trompowsky vs. 1...d5)"
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    "D00g": {
        "eco": "D00g",
        "fen": "rnbqkbnr/pp2pppp/2p5/3p2B1/3P4/8/PPP1PPPP/RN1QKBNR w KQkq - 0 3",
        "hash": "5927899840427497355",
        "name": "Hodgson Attack: 2...c6"
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    "D00h": {
        "eco": "D00h",
        "fen": "rnbqkbnr/ppp1ppp1/7p/3p2B1/3P4/8/PPP1PPPP/RN1QKBNR w KQkq - 0 3",
        "hash": "5965448675228519717",
        "name": "Hodgson Attack, 2...h6"
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    "D00i": {
        "eco": "D00i",
        "fen": "rnbqkb1r/ppp1pppp/5n2/3p2B1/3P4/8/PPP1PPPP/RN1QKBNR w KQkq d6 0 3",
        "hash": "11227746985974695334",
        "name": "Trompowsky: 2...d5"
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    "D00j": {
        "eco": "D00j",
        "fen": "rnbqkb1r/ppp1pppp/5B2/3p4/3P4/8/PPP1PPPP/RN1QKBNR b KQkq - 0 3",
        "hash": "4535109106756901702",
        "name": "Trompowsky: 2...d5 3.Bxf6"
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    "D00k": {
        "eco": "D00k",
        "fen": "rnbqkb1r/ppp2ppp/5p2/3p4/3P4/8/PPP1PPPP/RN1QKBNR w KQkq - 0 4",
        "hash": "10342184844444180584",
        "name": "Trompowsky: 2...d5 3.Bxf6 exf6"
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    "D00l": {
        "eco": "D00l",
        "fen": "rnbqkbnr/ppp1pppp/8/3p4/3PP3/8/PPP2PPP/RNBQKBNR b KQkq e3 0 2",
        "hash": "14007205216878600946",
        "name": "Blackmar-Diemer Gambit (BDG): 2.e4"
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    "D00m": {
        "eco": "D00m",
        "fen": "rnbqkbnr/ppp2ppp/8/4p3/3Pp3/2N5/PPP2PPP/R1BQKBNR w KQkq e6 0 4",
        "hash": "8864800472648837197",
        "name": "Blackmar-Diemer: Lemberger Countergambit"
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    "D00n": {
        "eco": "D00n",
        "fen": "rnbqkbnr/ppp1pppp/8/3p4/3P4/2N5/PPP1PPPP/R1BQKBNR b KQkq - 1 2",
        "hash": "18299113765639953697",
        "name": "Queen's Pawn: Veresov Attack"
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    "D00o": {
        "eco": "D00o",
        "fen": "rnbqkb1r/ppp1pppp/5n2/3p4/3P1B2/2N5/PPP1PPPP/R2QKBNR b KQkq - 3 3",
        "hash": "9027836471363811028",
        "name": "Queen's Pawn: Veresov, 3.Bf4"
    },
    "D00p": {
        "eco": "D00p",
        "fen": "rnbqkb1r/ppp1pppp/5n2/3p4/3P4/2N2N2/PPP1PPPP/R1BQKB1R b KQkq - 3 3",
        "hash": "9041357815170612618",
        "name": "Queen's Pawn: Veresov, 3.Nf3"
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    "D00q": {
        "eco": "D00q",
        "fen": "rnbqkb1r/ppp1pp1p/5np1/3p4/3P1B2/2N2N2/PPP1PPPP/R2QKB1R b KQkq - 1 4",
        "hash": "5735878235512456610",
        "name": "Queen's Pawn: Anti-King's Indian"
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    "D00r": {
        "eco": "D00r",
        "fen": "rnbq1rk1/ppp1ppbp/5np1/3p4/3P1B2/2N1PN2/PPP1BPPP/R2QK2R b KQ - 2 6",
        "hash": "3107764768870082020",
        "name": "Queen's Pawn: Anti-King's Indian, Main Line"
    },
    "D00s": {
        "eco": "D00s",
        "fen": "rnbqkb1r/ppp1pppp/5n2/3p4/3PP3/2N5/PPP2PPP/R1BQKBNR b KQkq e3 0 3",
        "hash": "7069167869364593085",
        "name": "Blackmar-Diemer Gambit (BDG)"
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    "D00t": {
        "eco": "D00t",
        "fen": "rnbqkb1r/ppp1pppp/5n2/8/3Pp3/2N5/PPP2PPP/R1BQKBNR w KQkq - 0 4",
        "hash": "12290364824544432621",
        "name": "Blackmar-Diemer: 3...dxe4"
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    "D00u": {
        "eco": "D00u",
        "fen": "rnbqkb1r/ppp1pppp/5n2/8/3Pp3/2N2P2/PPP3PP/R1BQKBNR b KQkq - 0 4",
        "hash": "14132792066465840796",
        "name": "Blackmar-Diemer: 4.f3"
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    "D00v": {
        "eco": "D00v",
        "fen": "rnbqkb1r/ppp1pppp/5n2/8/3P4/2N2p2/PPP3PP/R1BQKBNR w KQkq - 0 5",
        "hash": "16283035309309244391",
        "name": "Blackmar-Diemer: Accepted"
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    "D00w": {
        "eco": "D00w",
        "fen": "rnbqkb1r/ppp1pppp/5n2/8/3P4/2N2N2/PPP3PP/R1BQKB1R b KQkq - 0 5",
        "hash": "14536939812435471030",
        "name": "Blackmar-Diemer: 4.f3 exf3 5.Nxf3"
    },
    "D00x": {
        "eco": "D00x",
        "fen": "rnbqkb1r/ppp2ppp/4pn2/8/3P4/2N2N2/PPP3PP/R1BQKB1R w KQkq - 0 6",
        "hash": "13819972258897181412",
        "name": "Blackmar-Diemer: Euwe Defence"
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    "D00y": {
        "eco": "D00y",
        "fen": "rnbqkb1r/ppp1pp1p/5np1/8/3P4/2N2N2/PPP3PP/R1BQKB1R w KQkq - 0 6",
        "hash": "2308594976004290813",
        "name": "Blackmar-Diemer: Bogoljubow Defence"
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    "D01a": {
        "eco": "D01a",
        "fen": "rnbqkb1r/ppp1pppp/5n2/3p2B1/3P4/2N5/PPP1PPPP/R2QKBNR b KQkq - 3 3",
        "hash": "6937760897433503615",
        "name": "Richter-Veresov Attack"
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    "D01b": {
        "eco": "D01b",
        "fen": "rnbqkb1r/ppp1pppp/8/3p2B1/3Pn3/2N5/PPP1PPPP/R2QKBNR w KQkq - 4 4",
        "hash": "6507609484663655045",
        "name": "Richter-Veresov: 3...Ne4"
    },
    "D01c": {
        "eco": "D01c",
        "fen": "rnbqkb1r/ppp2ppp/4pn2/3p2B1/3P4/2N5/PPP1PPPP/R2QKBNR w KQkq - 0 4",
        "hash": "1598798717035222829",
        "name": "Richter-Veresov: 3...e6"
    },
    "D01d": {
        "eco": "D01d",
        "fen": "rnbqkb1r/ppp1ppp1/5n1p/3p2B1/3P4/2N5/PPP1PPPP/R2QKBNR w KQkq - 0 4",
        "hash": "17487666064611004010",
        "name": "Richter-Veresov: 3...h6"
    },
    "D01e": {
        "eco": "D01e",
        "fen": "rnbqkb1r/ppp1pp1p/5np1/3p2B1/3P4/2N5/PPP1PPPP/R2QKBNR w KQkq - 0 4",
        "hash": "9940486286199559476",
        "name": "Richter-Veresov: 3...g6"
    },
    "D01f": {
        "eco": "D01f",
        "fen": "rnbqkb1r/pp2pppp/2p2n2/3p2B1/3P4/2N5/PPP1PPPP/R2QKBNR w KQkq - 0 4",
        "hash": "17455122197077972164",
        "name": "Richter-Veresov: 3...c6"
    },
    "D01g": {
        "eco": "D01g",
        "fen": "rnbqkb1r/pp2pppp/5n2/2pp2B1/3P4/2N5/PPP1PPPP/R2QKBNR w KQkq c6 0 4",
        "hash": "9670971580009253890",
        "name": "Richter-Veresov: 3...c5"
    },
    "D01h": {
        "eco": "D01h",
        "fen": "rn1qkb1r/ppp1pppp/5n2/3p1bB1/3P4/2N5/PPP1PPPP/R2QKBNR w KQkq - 4 4",
        "hash": "16383683445139410674",
        "name": "Richter-Veresov: 3...Bf5"
    },
    "D01i": {
        "eco": "D01i",
        "fen": "rn1qkb1r/ppp1pppp/5n2/3p1bB1/3P4/2N2P2/PPP1P1PP/R2QKBNR b KQkq - 0 4",
        "hash": "10227515841364189571",
        "name": "Richter-Veresov: 3...Bf5 4.f3"
    },
    "D01j": {
        "eco": "D01j",
        "fen": "rn1qkb1r/ppp1pppp/5n2/3p1bB1/3P4/2N2N2/PPP1PPPP/R2QKB1R b KQkq - 5 4",
        "hash": "4051662688388771791",
        "name": "Richter-Veresov: 3...Bf5 4.Nf3"
    },
    "D01k": {
        "eco": "D01k",
        "fen": "rn1qkb1r/ppp1pppp/5B2/3p1b2/3P4/2N5/PPP1PPPP/R2QKBNR b KQkq - 0 4",
        "hash": "5071476046405423122",
        "name": "Richter-Veresov: 3...Bf5 4.Bxf6"
    },
    "D01l": {
        "eco": "D01l",
        "fen": "r1bqkb1r/pppnpppp/5n2/3p2B1/3P4/2N5/PPP1PPPP/R2QKBNR w KQkq - 4 4",
        "hash": "6027113289819253427",
        "name": "Richter-Veresov: 3...Nbd7"
    },
    "D01m": {
        "eco": "D01m",
        "fen": "r1bqkb1r/pppnpppp/5n2/3p2B1/3P4/2N2P2/PPP1P1PP/R2QKBNR b KQkq - 0 4",
        "hash": "4401562384292677058",
        "name": "Richter-Veresov: 3...Nbd7 4.f3"
    },
    "D01n": {
        "eco": "D01n",
        "fen": "r1bqkb1r/pppnpppp/5n2/3p2B1/3P4/2N2N2/PPP1PPPP/R2QKB1R b KQkq - 5 4",
        "hash": "9854007293854616462",
        "name": "Richter-Veresov: 3...Nbd7 4.Nf3"
    },
    "D01o": {
        "eco": "D01o",
        "fen": "r1bqkb1r/pppnppp1/5n1p/3p2B1/3P4/2N2N2/PPP1PPPP/R2QKB1R w KQkq - 0 5",
        "hash": "1889044583887946395",
        "name": "Richter-Veresov: 3...Nbd7 4.Nf3 h6"
    },
    "D01p": {
        "eco": "D01p",
        "fen": "r1bqkb1r/pppnpp1p/5np1/3p2B1/3P4/2N2N2/PPP1PPPP/R2QKB1R w KQkq - 0 5",
        "hash": "7022277540704131525",
        "name": "Richter-Veresov: 3...Nbd7 4.Nf3 g6"
    },
    "D02a": {
        "eco": "D02a",
        "fen": "rnbqkbnr/ppp1pppp/8/3p4/3P4/5N2/PPP1PPPP/RNBQKB1R b KQkq - 1 2",
        "hash": "15924859471947038405",
        "name": "Queen's Pawn: 2.Nf3"
    },
    "D02b": {
        "eco": "D02b",
        "fen": "rnbqkbnr/pp2pppp/2p5/3p4/3P4/5N2/PPP1PPPP/RNBQKB1R w KQkq - 0 3",
        "hash": "5727060023510183294",
        "name": "Queen's Pawn: 2.Nf3 c6"
    },
    "D02c": {
        "eco": "D02c",
        "fen": "rnbqkbnr/pp2pppp/2p5/3p4/3P1B2/5N2/PPP1PPPP/RN1QKB1R b KQkq - 1 3",
        "hash": "10677608372771669789",
        "name": "Queen's Pawn: London"
    },
    "D02d": {
        "eco": "D02d",
        "fen": "rn1qkbnr/ppp1pppp/8/3p1b2/3P4/5N2/PPP1PPPP/RNBQKB1R w KQkq - 2 3",
        "hash": "6780484653964851016",
        "name": "Queen's Pawn: 2.Nf3 Bf5"
    },
    "D02e": {
        "eco": "D02e",
        "fen": "r1bqkbnr/ppp1pppp/2n5/3p4/3P4/5N2/PPP1PPPP/RNBQKB1R w KQkq - 2 3",
        "hash": "8569698848803085254",
        "name": "Queen's Pawn: 2.Nf3 Nc6"
    },
    "D02f": {
        "eco": "D02f",
        "fen": "r1bqkbnr/ppp1pppp/2n5/3p4/3P1B2/5N2/PPP1PPPP/RN1QKB1R b KQkq - 3 3",
        "hash": "12518117124718965157",
        "name": "Queen's Pawn: 2.Nf3 Nc6 3.Bf4"
    },
    "D02g": {
        "eco": "D02g",
        "fen": "r1bqkbnr/ppp1pppp/2n5/3p4/3P4/5NP1/PPP1PP1P/RNBQKB1R b KQkq - 0 3",
        "hash": "6488302722103411710",
        "name": "Queen's Pawn: 2.Nf3 Nc6 3.g3"
    },
    "D02h": {
        "eco": "D02h",
        "fen": "rnbqkbnr/ppp2ppp/4p3/3p4/3P4/5N2/PPP1PPPP/RNBQKB1R w KQkq - 0 3",
        "hash": "12355490758319959703",
        "name": "Queen's Pawn: 2.Nf3 e6"
    },
    "D02i": {
        "eco": "D02i",
        "fen": "rnbqkbnr/ppp2ppp/4p3/3p4/3P4/5NP1/PPP1PP1P/RNBQKB1R b KQkq - 0 3",
        "hash": "9768657374098208431",
        "name": "Queen's Pawn: 2.Nf3 e6 3.g3"
    },
    "D02j": {
        "eco": "D02j",
        "fen": "rnbqkbnr/pp2pppp/8/2pp4/3P4/5N2/PPP1PPPP/RNBQKB1R w KQkq c6 0 3",
        "hash": "4283388330662294968",
        "name": "Queen's Pawn: Krause Variation"
    },
    "D02k": {
        "eco": "D02k",
        "fen": "rnbqkb1r/ppp1pppp/5n2/3p4/3P4/5N2/PPP1PPPP/RNBQKB1R w KQkq - 2 3",
        "hash": "9722783023074688851",
        "name": "Queen's Pawn: 2.Nf3 Nf6"
    },
    "D02l": {
        "eco": "D02l",
        "fen": "rnbqkb1r/ppp1pppp/5n2/3p4/3P1B2/5N2/PPP1PPPP/RN1QKB1R b KQkq - 3 3",
        "hash": "6753892168587302192",
        "name": "Queen's Pawn: London"
    },
    "D02m": {
        "eco": "D02m",
        "fen": "rn1qkb1r/ppp1pppp/5n2/3p1b2/3P1B2/5N2/PPP1PPPP/RN1QKB1R w KQkq - 4 4",
        "hash": "16042891330020793533",
        "name": "Queen's Pawn: London"
    },
    "D02n": {
        "eco": "D02n",
        "fen": "rnbqkb1r/ppp2ppp/4pn2/3p4/3P1B2/5N2/PPP1PPPP/RN1QKB1R w KQkq - 0 4",
        "hash": "3156274665317647714",
        "name": "Queen's Pawn: London"
    },
    "D02o": {
        "eco": "D02o",
        "fen": "rnbqkb1r/pp2pppp/5n2/2pp4/3P1B2/5N2/PPP1PPPP/RN1QKB1R w KQkq c6 0 4",
        "hash": "13532037642370637389",
        "name": "Queen's Pawn: London"
    },
    "D02p": {
        "eco": "D02p",
        "fen": "rnbqkb1r/pp3ppp/4pn2/2pp4/3P1B2/4PN2/PPP2PPP/RN1QKB1R w KQkq - 0 5",
        "hash": "6958558442278241979",
        "name": "Queen's Pawn: London"
    },
    "D02q": {
        "eco": "D02q",
        "fen": "r1bqk2r/pp3ppp/2nbpn2/2pp4/3P1B2/2PBPN2/PP3PPP/RN1QK2R w KQkq - 3 7",
        "hash": "5544819903769476969",
        "name": "Queen's Pawn: London"
    },
    "D02r": {
        "eco": "D02r",
        "fen": "rnbqkb1r/ppp1pppp/5n2/3p4/3P4/5NP1/PPP1PP1P/RNBQKB1R b KQkq - 0 3",
        "hash": "12252316447590016875",
        "name": "Queen's Pawn: 3.g3"
    },
    "D02s": {
        "eco": "D02s",
        "fen": "rnbqkb1r/pp2pppp/2p2n2/3p4/3P4/5NP1/PPP1PP1P/RNBQKB1R w KQkq - 0 4",
        "hash": "4067336553838916816",
        "name": "Queen's Pawn: 3.g3 c6"
    },
    "D02t": {
        "eco": "D02t",
        "fen": "rn1qkb1r/pp2pppp/2p2n2/3p4/3P2b1/5NP1/PPP1PPBP/RNBQK2R w KQkq - 2 5",
        "hash": "10327312792812479043",
        "name": "Queen's Pawn: 3.g3 c6 4.Bg2 Bg4"
    },
    "D02u": {
        "eco": "D02u",
        "fen": "rnbqkb1r/ppp1pp1p/5np1/3p4/3P4/5NP1/PPP1PP1P/RNBQKB1R w KQkq - 0 4",
        "hash": "4880964936308159776",
        "name": "Queen's Pawn: 3.g3 g6"
    },
    "D03a": {
        "eco": "D03a",
        "fen": "rnbqkb1r/ppp1pppp/5n2/3p2B1/3P4/5N2/PPP1PPPP/RN1QKB1R b KQkq - 3 3",
        "hash": "4662374139822761115",
        "name": "Torre Attack (Tartakower)"
    },
    "D03b": {
        "eco": "D03b",
        "fen": "rnbqkb1r/ppp1pppp/8/3p2B1/3Pn3/5N2/PPP1PPPP/RN1QKB1R w KQkq - 4 4",
        "hash": "8844040578360666465",
        "name": "Torre Attack: 3...Ne4"
    },
    "D03c": {
        "eco": "D03c",
        "fen": "rnbqkb1r/ppp1pppp/8/3p4/3PnB2/5N2/PPP1PPPP/RN1QKB1R b KQkq - 5 4",
        "hash": "11485532625290812867",
        "name": "Torre Attack: 3...Ne4 4.Bf4"
    },
    "D03d": {
        "eco": "D03d",
        "fen": "rnbqkb1r/ppp2ppp/4pn2/3p2B1/3P4/5N2/PPP1PPPP/RN1QKB1R w KQkq - 0 4",
        "hash": "3946251286096704713",
        "name": "Torre Attack: 3...e6"
    },
    "D03e": {
        "eco": "D03e",
        "fen": "rnbqkb1r/ppp2ppp/4pn2/3p2B1/3P4/4PN2/PPP2PPP/RN1QKB1R b KQkq - 0 4",
        "hash": "11236098512492395629",
        "name": "Torre Attack: 3...e6 4.e3"
    },
    "D03f": {
        "eco": "D03f",
        "fen": "r1bqkb1r/pppn1ppp/4pn2/3p2B1/3P4/4PN2/PPP2PPP/RN1QKB1R w KQkq - 1 5",
        "hash": "12109580495727071649",
        "name": "Torre Attack: 3...e6 4.e3 Nbd7"
    },
    "D03g": {
        "eco": "D03g",
        "fen": "rnbqkb1r/pp3ppp/4pn2/2pp2B1/3P4/4PN2/PPP2PPP/RN1QKB1R w KQkq c6 0 5",
        "hash": "9052083235699324688",
        "name": "Torre Attack: 3...e6 4.e3 c5"
    },
    "D03h": {
        "eco": "D03h",
        "fen": "r1bqkb1r/pp1n1ppp/4pn2/2pp2B1/3P4/4PN2/PPPN1PPP/R2QKB1R w KQkq - 2 6",
        "hash": "1662591879087469292",
        "name": "Torre Attack: 3...e6 4.e3 c5"
    },
    "D03i": {
        "eco": "D03i",
        "fen": "rnbqk2r/pp2bppp/4pn2/2pp2B1/3P4/4PN2/PPPN1PPP/R2QKB1R w KQkq - 2 6",
        "hash": "3476143615757415345",
        "name": "Torre Attack: 3...e6 4.e3 c5"
    },
    "D03j": {
        "eco": "D03j",
        "fen": "r1bqk2r/pp1nbppp/4pn2/2pp2B1/3P4/2P1PN2/PP1N1PPP/R2QKB1R w KQkq - 1 7",
        "hash": "8431932530418946555",
        "name": "Torre Attack: 3...e6 4.e3 c5"
    },
    "D03k": {
        "eco": "D03k",
        "fen": "rnbqkb1r/ppp1pp1p/5np1/3p2B1/3P4/5N2/PPP1PPPP/RN1QKB1R w KQkq - 0 4",
        "hash": "12177812319238485712",
        "name": "Torre Attack: 3...g6"
    },
    "D03l": {
        "eco": "D03l",
        "fen": "rnbqkb1r/ppp1pp1p/5np1/3p2B1/3P4/5N2/PPPNPPPP/R2QKB1R b KQkq - 1 4",
        "hash": "17325065922408898272",
        "name": "Torre Attack: 3...g6"
    },
    "D03m": {
        "eco": "D03m",
        "fen": "rnbqkb1r/ppp1pp1p/5np1/3p2B1/3P4/4PN2/PPP2PPP/RN1QKB1R b KQkq - 0 4",
        "hash": "300902774630678132",
        "name": "Torre Attack: 3...g6 4.e3"
    },
    "D03n": {
        "eco": "D03n",
        "fen": "rnbqk2r/ppp1ppbp/5np1/3p2B1/3P4/4PN2/PPPN1PPP/R2QKB1R b KQkq - 2 5",
        "hash": "17149567394359811566",
        "name": "Torre Attack: 3...g6 4.e3 Bg7 5.Nbd2"
    },
    "D03o": {
        "eco": "D03o",
        "fen": "rnbq1rk1/ppp1ppbp/5np1/3p2B1/3P4/4PN2/PPPN1PPP/R2QKB1R w KQ - 3 6",
        "hash": "16669912499963425797",
        "name": "Torre Attack: 3...g6 4.e3 Bg7 5.Nbd2 O-O"
    },
    "D03p": {
        "eco": "D03p",
        "fen": "rnbq1rk1/ppp1ppbp/5np1/3p2B1/3P4/2P1PN2/PP1N1PPP/R2QKB1R b KQ - 0 6",
        "hash": "10488203492078517123",
        "name": "Torre Attack: 3...g6 4.e3 Bg7 5.Nbd2 O-O 6.c3"
    },
    "D03q": {
        "eco": "D03q",
        "fen": "r1bq1rk1/pppnppbp/5np1/3p2B1/3P4/2P1PN2/PP1N1PPP/R2QKB1R w KQ - 1 7",
        "hash": "11704555111147705935",
        "name": "Torre Attack: 3...g6 4.e3 Bg7 5.Nbd2 O-O 6.c3 Nbd7"
    },
    "D03r": {
        "eco": "D03r",
        "fen": "r1bq1rk1/pppnppbp/5np1/3p2B1/3P4/2P1PN2/PP1NBPPP/R2QK2R b KQ - 2 7",
        "hash": "15127148204951624940",
        "name": "Torre Attack: 3...g6 4.e3 Bg7 5.Nbd2 O-O 6.c3 Nbd7 7.Be2"
    },
    "D03s": {
        "eco": "D03s",
        "fen": "rnbq1rk1/ppp1ppbp/5np1/3p2B1/3P4/3BPN2/PPPN1PPP/R2QK2R b KQ - 4 6",
        "hash": "12851809591203804790",
        "name": "Torre Attack: 3...g6 4.e3 Bg7 5.Nbd2 O-O 6.Bd3"
    },
    "D03t": {
        "eco": "D03t",
        "fen": "rnbq1rk1/pp2ppbp/5np1/2pp2B1/3P4/3BPN2/PPPN1PPP/R2QK2R w KQ c6 0 7",
        "hash": "6064973302503193867",
        "name": "Torre Attack: 3...g6 4.e3 Bg7 5.Nbd2 O-O 6.Bd3 c5"
    },
    "D03u": {
        "eco": "D03u",
        "fen": "r1bq1rk1/pp1nppbp/5np1/2pp2B1/3P4/2PBPN2/PP1N1PPP/R2QK2R w KQ - 1 8",
        "hash": "1230220268496412481",
        "name": "Torre Attack: 3...g6 4.e3 Bg7 5.Nbd2 O-O 6.Bd3 c5 7.c3 Nbd7"
    },
    "D04a": {
        "eco": "D04a",
        "fen": "rnbqkb1r/ppp1pppp/5n2/3p4/3P4/4PN2/PPP2PPP/RNBQKB1R b KQkq - 0 3",
        "hash": "3153365364445755383",
        "name": "Queen's Pawn: Colle"
    },
    "D04b": {
        "eco": "D04b",
        "fen": "rn1qkb1r/ppp1pppp/5n2/3p4/3P2b1/4PN2/PPP2PPP/RNBQKB1R w KQkq - 1 4",
        "hash": "2959088315984918813",
        "name": "Colle: 3...Bg4"
    },
    "D04c": {
        "eco": "D04c",
        "fen": "rn1qkb1r/ppp1pppp/5n2/3p1b2/3P4/4PN2/PPP2PPP/RNBQKB1R w KQkq - 1 4",
        "hash": "12167152353076199034",
        "name": "Colle: 3...Bf5"
    },
    "D04d": {
        "eco": "D04d",
        "fen": "rn1qkb1r/ppp2ppp/4pn2/3p1b2/3P4/3BPN2/PPP2PPP/RNBQK2R w KQkq - 0 5",
        "hash": "10061106485649763419",
        "name": "Colle: 3...Bf5, Alekhine Variation"
    },
    "D04e": {
        "eco": "D04e",
        "fen": "rnbqkb1r/ppp1pp1p/5np1/3p4/3P4/4PN2/PPP2PPP/RNBQKB1R w KQkq - 0 4",
        "hash": "14012759251978593724",
        "name": "Colle: 3...g6"
    },
    "D04f": {
        "eco": "D04f",
        "fen": "rnbqkb1r/pp2pppp/2p2n2/3p4/3P4/4PN2/PPP2PPP/RNBQKB1R w KQkq - 0 4",
        "hash": "13382988317823329356",
        "name": "Colle: 3...c6"
    },
    "D04g": {
        "eco": "D04g",
        "fen": "rnbqkb1r/pp2pppp/5n2/2pp4/3P4/4PN2/PPP2PPP/RNBQKB1R w KQkq c6 0 4",
        "hash": "14822138818857548938",
        "name": "Colle: 3...c5"
    },
    "D04h": {
        "eco": "D04h",
        "fen": "rnbqkb1r/pp2pppp/5n2/2pp4/3P4/2P1PN2/PP3PPP/RNBQKB1R b KQkq - 0 4",
        "hash": "13504087606311793420",
        "name": "Colle: 3...c5 4.c3"
    },
    "D04i": {
        "eco": "D04i",
        "fen": "r1bqkb1r/pp2pppp/2n2n2/2pp4/3P4/2P1PN2/PP3PPP/RNBQKB1R w KQkq - 1 5",
        "hash": "1190622397966423567",
        "name": "Colle: 3...c5 4.c3 Nc6"
    },
    "D04j": {
        "eco": "D04j",
        "fen": "r1bqkb1r/pp1npppp/5n2/2pp4/3P4/2P1PN2/PP3PPP/RNBQKB1R w KQkq - 1 5",
        "hash": "9839049606004006592",
        "name": "Colle: 3...c5 4.c3 Nbd7"
    },
    "D05a": {
        "eco": "D05a",
        "fen": "rnbqkb1r/ppp2ppp/4pn2/3p4/3P4/4PN2/PPP2PPP/RNBQKB1R w KQkq - 0 4",
        "hash": "6752289087529265061",
        "name": "Colle: 3...e6"
    },
    "D05b": {
        "eco": "D05b",
        "fen": "rnbqkb1r/ppp2ppp/4pn2/3p4/3P4/4PN2/PPPN1PPP/R1BQKB1R b KQkq - 1 4",
        "hash": "349674680666296213",
        "name": "Colle: 3...e6 4.Nbd2"
    },
    "D05c": {
        "eco": "D05c",
        "fen": "rnbqkb1r/pp3ppp/4pn2/2pp4/3P4/1P2PN2/P1PN1PPP/R1BQKB1R b KQkq - 0 5",
        "hash": "7930270216542121861",
        "name": "Colle: Zukertort Variation"
    },
    "D05d": {
        "eco": "D05d",
        "fen": "rnbqkb1r/ppp2ppp/4pn2/3p4/3P4/3BPN2/PPP2PPP/RNBQK2R b KQkq - 1 4",
        "hash": "628624351417951702",
        "name": "Colle: 3...e6 4.Bd3"
    },
    "D05e": {
        "eco": "D05e",
        "fen": "rnbqkb1r/pp3ppp/4pn2/2pp4/3P4/3BPN2/PPP2PPP/RNBQK2R w KQkq c6 0 5",
        "hash": "17206146595535089323",
        "name": "Colle: 3...e6 4.Bd3 c5"
    },
    "D05f": {
        "eco": "D05f",
        "fen": "rnbqkb1r/pp3ppp/4pn2/2pp4/3P4/1P1BPN2/P1P2PPP/RNBQK2R b KQkq - 0 5",
        "hash": "7092856595585369542",
        "name": "Colle: Rubinstein's Attack"
    },
    "D05g": {
        "eco": "D05g",
        "fen": "r1bqkb1r/pp3ppp/2n1pn2/2pp4/3P4/1P1BPN2/P1P2PPP/RNBQK2R w KQkq - 1 6",
        "hash": "14520515166639399109",
        "name": "Colle: Rubinstein's Attack, 5...Nc6"
    },
    "D05h": {
        "eco": "D05h",
        "fen": "rnbqkb1r/pp3ppp/4pn2/2pp4/3P4/2PBPN2/PP3PPP/RNBQK2R b KQkq - 0 5",
        "hash": "10957956849732313389",
        "name": "Colle: 5.c3"
    },
    "D05i": {
        "eco": "D05i",
        "fen": "r1bqkb1r/pp1n1ppp/4pn2/2pp4/3P4/2PBPN2/PP3PPP/RNBQK2R w KQkq - 1 6",
        "hash": "12389685078869052641",
        "name": "Colle: 5.c3 Nbd7"
    },
    "D05j": {
        "eco": "D05j",
        "fen": "r1bqkb1r/pp3ppp/2n1pn2/2pp4/3P4/2PBPN2/PP3PPP/RNBQK2R w KQkq - 1 6",
        "hash": "3746892980696106030",
        "name": "Colle: 5.c3 Nc6"
    },
    "D05k": {
        "eco": "D05k",
        "fen": "r1bqkb1r/pp3ppp/2n1pn2/2pp4/3P4/2PBPN2/PP1N1PPP/R1BQK2R b KQkq - 2 6",
        "hash": "7678948745487477790",
        "name": "Colle: 5.c3 Nc6 6.Nbd2"
    },
    "D05l": {
        "eco": "D05l",
        "fen": "r1bqk2r/pp3ppp/2nbpn2/2pp4/3P4/2PBPN2/PP1N1PPP/R1BQK2R w KQkq - 3 7",
        "hash": "14900571340958121274",
        "name": "Colle: 5.c3 Nc6 6.Nbd2 Bd6"
    },
    "D05m": {
        "eco": "D05m",
        "fen": "r1bq1rk1/pp3ppp/2nbpn2/2pp4/3P4/2PBPN2/PP1N1PPP/R1BQ1RK1 w - - 5 8",
        "hash": "13408588502544060353",
        "name": "Colle: 5.c3 Nc6 6.Nbd2 Bd6 7.O-O O-O"
    },
    "D05n": {
        "eco": "D05n",
        "fen": "r1bq1rk1/pp3ppp/2n1pn2/2bp4/8/2PBPN2/PP1N1PPP/R1BQ1RK1 w - - 0 9",
        "hash": "966745755984622152",
        "name": "Colle: 5.c3 Nc6 6.Nbd2 Bd6 7.O-O O-O 8.dxc5 Bxc5"
    },
    "D06a": {
        "eco": "D06a",
        "fen": "rnbqkbnr/ppp1pppp/8/3p4/2PP4/8/PP2PPPP/RNBQKBNR b KQkq c3 0 2",
        "hash": "9963937660605248767",
        "name": "Queen's Gambit"
    },
    "D06b": {
        "eco": "D06b",
        "fen": "rnbqkbnr/pp2pppp/8/2pp4/2PP4/8/PP2PPPP/RNBQKBNR w KQkq c6 0 3",
        "hash": "7797654190461042562",
        "name": "QGD: Austrian Defence"
    },
    "D06c": {
        "eco": "D06c",
        "fen": "rnbqkb1r/pp2pppp/5n2/2pP4/3P4/5N2/PP2PPPP/RNBQKB1R b KQkq - 2 4",
        "hash": "16327403397560273716",
        "name": "QGD: Austrian, Rubinstein, 4.Nf3"
    },
    "D06d": {
        "eco": "D06d",
        "fen": "rnbqkb1r/pp2pppp/5n2/3P4/3p4/5N2/PP2PPPP/RNBQKB1R w KQkq - 0 5",
        "hash": "13657215172968866546",
        "name": "QGD: Austrian, Rubinstein, 4.Nf3 cxd4"
    },
    "D06e": {
        "eco": "D06e",
        "fen": "rnbqkb1r/ppp1pppp/5n2/3p4/2PP4/8/PP2PPPP/RNBQKBNR w KQkq - 1 3",
        "hash": "15107659714621175145",
        "name": "QGD: Marshall Defence"
    },
    "D06f": {
        "eco": "D06f",
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        "hash": "15148563207481744463",
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        "hash": "8121741496393206007",
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        "hash": "17878721681878548011",
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        "hash": "5784254183466461971",
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        "hash": "1622261733305341226",
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        "hash": "15843707072140097080",
        "name": "Slav: Exchange, 8.Bd3 Main Line"
    },
    "D14l": {
        "eco": "D14l",
        "fen": "r4rk1/pp3ppp/2nqpn2/3p4/3P4/2NQPN2/PP3PPP/2R2RK1 b - - 3 12",
        "hash": "6133442448696468342",
        "name": "Slav: Exchange, 8.Bd3 Main Line, 12.Rac1"
    },
    "D14m": {
        "eco": "D14m",
        "fen": "r4rk1/pp3ppp/2nqpn2/3p4/3P4/2NQPN2/PP3PPP/R1R3K1 b - - 3 12",
        "hash": "4584354773797851469",
        "name": "Slav: Exchange, 8.Bd3 Main Line, 12.Rfc1"
    },
    "D14n": {
        "eco": "D14n",
        "fen": "r1r3k1/pp3ppp/2nqpn2/3p4/3P4/2NQPN2/PP3PPP/R1R3K1 w - - 4 13",
        "hash": "10720219608831525126",
        "name": "Slav: Exchange, 8.Bd3 Main Line, 12.Rfc1 Rfc8"
    },
    "D14o": {
        "eco": "D14o",
        "fen": "r2qkb1r/pp3ppp/2n1pn2/1B1p1b2/3P1B2/2N1PN2/PP3PPP/R2QK2R b KQkq - 1 8",
        "hash": "386794488848486665",
        "name": "Slav: Exchange, 8.Bb5"
    },
    "D14p": {
        "eco": "D14p",
        "fen": "r2qkb1r/pp1n1ppp/2n1p3/1B1p1b2/3P1B2/2N1PN2/PP3PPP/R2QK2R w KQkq - 2 9",
        "hash": "18165594755934230780",
        "name": "Slav: Exchange, 8.Bb5 Nd7"
    },
    "D14q": {
        "eco": "D14q",
        "fen": "r2qkb1r/pp1n1ppp/2n1p3/1B1p1b2/Q2P1B2/2N1PN2/PP3PPP/R3K2R b KQkq - 3 9",
        "hash": "3368012338594998919",
        "name": "Slav: Exchange, 8.Bb5 Nd7 9.Qa4"
    },
    "D15a": {
        "eco": "D15a",
        "fen": "rnbqkb1r/pp2pppp/2p2n2/3p4/2PP4/2N2N2/PP2PPPP/R1BQKB1R b KQkq - 3 4",
        "hash": "7142754967990650166",
        "name": "Slav: 4.Nc3"
    },
    "D15b": {
        "eco": "D15b",
        "fen": "rn1qkb1r/pp2pppp/2p2n2/3p1b2/2PP4/2N2N2/PP2PPPP/R1BQKB1R w KQkq - 4 5",
        "hash": "16157015790906264763",
        "name": "Slav: 4.Nc3 Bf5"
    },
    "D15c": {
        "eco": "D15c",
        "fen": "rnb1kb1r/pp2pppp/1qp2n2/3p4/2PP4/2N2N2/PP2PPPP/R1BQKB1R w KQkq - 4 5",
        "hash": "11880451404406887404",
        "name": "Slav: Suechting Variation"
    },
    "D15d": {
        "eco": "D15d",
        "fen": "rnbqkb1r/1p2pppp/p1p2n2/3p4/2PP4/2N2N2/PP2PPPP/R1BQKB1R w KQkq - 0 5",
        "hash": "12814949031136312810",
        "name": "Slav: Chameleon Variation"
    },
    "D15e": {
        "eco": "D15e",
        "fen": "rnbqkb1r/1p2pppp/p1p2n2/3p2B1/2PP4/2N2N2/PP2PPPP/R2QKB1R b KQkq - 1 5",
        "hash": "8614698935326828066",
        "name": "Slav: Chameleon, 5.Bg5"
    },
    "D15f": {
        "eco": "D15f",
        "fen": "rnbqkb1r/1p2pppp/p1p2n2/3pN3/2PP4/2N5/PP2PPPP/R1BQKB1R b KQkq - 1 5",
        "hash": "7849501403240257692",
        "name": "Slav: Chameleon, 5.Ne5"
    },
    "D15g": {
        "eco": "D15g",
        "fen": "rnbqkb1r/1p2pppp/p1p2n2/3p4/2PP4/2N1PN2/PP3PPP/R1BQKB1R b KQkq - 0 5",
        "hash": "2088151309428602190",
        "name": "Slav: Chameleon, 5.e3"
    },
    "D15h": {
        "eco": "D15h",
        "fen": "rnbqkb1r/4pppp/p1p2n2/1p1p4/2PP4/2N1PN2/PP3PPP/R1BQKB1R w KQkq b6 0 6",
        "hash": "9006900844447107187",
        "name": "Slav: Chameleon, 5.e3 b5"
    },
    "D15i": {
        "eco": "D15i",
        "fen": "rnbqkb1r/4pppp/p1p2n2/1p1p4/2PP4/1PN1PN2/P4PPP/R1BQKB1R b KQkq - 0 6",
        "hash": "17318751573620482846",
        "name": "Slav: Chameleon, 5.e3 b5 6.b3"
    },
    "D15j": {
        "eco": "D15j",
        "fen": "rnbqkb1r/1p2pppp/p1p2n2/2Pp4/3P4/2N2N2/PP2PPPP/R1BQKB1R b KQkq - 0 5",
        "hash": "16016263069412118618",
        "name": "Slav: Chameleon, 5.c5"
    },
    "D15k": {
        "eco": "D15k",
        "fen": "r1bqkb1r/1p1npppp/p1p2n2/2Pp4/3P4/2N2N2/PP2PPPP/R1BQKB1R w KQkq - 1 6",
        "hash": "17124455148747013526",
        "name": "Slav: Chameleon, 5.c5 Nbd7"
    },
    "D15l": {
        "eco": "D15l",
        "fen": "rnbqkb1r/1p2pppp/p1p2n2/3p4/P1PP4/2N2N2/1P2PPPP/R1BQKB1R b KQkq a3 0 5",
        "hash": "15717183175309289508",
        "name": "Slav: Chameleon, 5.a4"
    },
    "D15m": {
        "eco": "D15m",
        "fen": "rnbqkb1r/1p3ppp/p1p1pn2/3p4/P1PP4/2N2N2/1P2PPPP/R1BQKB1R w KQkq - 0 6",
        "hash": "12423554377693591670",
        "name": "Slav: Chameleon, 5.a4 e6"
    },
    "D15n": {
        "eco": "D15n",
        "fen": "rnbqkb1r/1p3ppp/p1p1pn2/3p2B1/P1PP4/2N2N2/1P2PPPP/R2QKB1R b KQkq - 1 6",
        "hash": "7652464403226698686",
        "name": "Slav: Chameleon, 5.a4 e6 6.Bg5"
    },
    "D15o": {
        "eco": "D15o",
        "fen": "rnbqkb1r/pp2pppp/2p2n2/8/2pP4/2N2N2/PP2PPPP/R1BQKB1R w KQkq - 0 5",
        "hash": "12764908881138920405",
        "name": "Slav: Accepted"
    },
    "D15p": {
        "eco": "D15p",
        "fen": "rnbqkb1r/pp2pppp/2p2n2/4N3/2pP4/2N5/PP2PPPP/R1BQKB1R b KQkq - 1 5",
        "hash": "7790892217459986083",
        "name": "Slav: Accepted, 5.Ne5"
    },
    "D15q": {
        "eco": "D15q",
        "fen": "rnbqkb1r/pp2pppp/2p2n2/8/2pP4/2N1PN2/PP3PPP/R1BQKB1R b KQkq - 0 5",
        "hash": "2020799347915760497",
        "name": "Slav: Accepted, Alekhine"
    },
    "D15r": {
        "eco": "D15r",
        "fen": "rnbqkb1r/p3pppp/2p2n2/8/PppP4/2N1PN2/1P3PPP/R1BQKB1R w KQkq - 0 7",
        "hash": "8506023626590065345",
        "name": "Slav: Accepted, Alekhine: 5...b5 6.a4 b4"
    },
    "D15s": {
        "eco": "D15s",
        "fen": "rnbqkb1r/p3pppp/2p2n2/8/PppP4/4PN2/1P3PPP/RNBQKB1R b KQkq - 1 7",
        "hash": "10204153765516906520",
        "name": "Slav: Accepted, Alekhine: 5...b5 6.a4 b4 7.Nb1"
    },
    "D15t": {
        "eco": "D15t",
        "fen": "rnbqkb1r/pp2pppp/2p2n2/8/2pPP3/2N2N2/PP3PPP/R1BQKB1R b KQkq e3 0 5",
        "hash": "8440059844475688671",
        "name": "Slav: Geller (Tolush) Gambit"
    },
    "D15u": {
        "eco": "D15u",
        "fen": "rnbqkb1r/p3pppp/2p2n2/1p6/2pPP3/2N2N2/PPQ2PPP/R1B1KB1R b KQkq - 1 6",
        "hash": "11834340236982785926",
        "name": "Slav: Geller Gambit, Spassky Variation"
    },
    "D15v": {
        "eco": "D15v",
        "fen": "rnbqkb1r/p3pppp/2p2n2/1p2P3/2pP4/2N2N2/PP3PPP/R1BQKB1R b KQkq - 0 6",
        "hash": "8384683665005776262",
        "name": "Slav: Geller Gambit, 6.e5"
    },
    "D15w": {
        "eco": "D15w",
        "fen": "rnbqkb1r/p3pppp/2p5/1p1nP1N1/2pP4/2N5/PP3PPP/R1BQKB1R b KQkq - 2 7",
        "hash": "16617824622196162711",
        "name": "Slav: Geller Gambit, 6.e5 Nd5 7.Ng5"
    },
    "D15x": {
        "eco": "D15x",
        "fen": "rnbqkb1r/p3pppp/2p5/1p1nP3/P1pP4/2N2N2/1P3PPP/R1BQKB1R b KQkq a3 0 7",
        "hash": "15818260695333547517",
        "name": "Slav: Geller Gambit, 6.e5 Nd5 7.a4"
    },
    "D15y": {
        "eco": "D15y",
        "fen": "rnbqkb1r/p4ppp/2p1p3/1p1nP3/P1pP4/2N2N2/1P3PPP/R1BQKB1R w KQkq - 0 8",
        "hash": "12534136213394931119",
        "name": "Slav: Geller Gambit, 6.e5 Nd5 7.a4 e6"
    },
    "D16a": {
        "eco": "D16a",
        "fen": "rnbqkb1r/pp2pppp/2p2n2/8/P1pP4/2N2N2/1P2PPPP/R1BQKB1R b KQkq a3 0 5",
        "hash": "15775949045825043995",
        "name": "Slav: Alapin"
    },
    "D16b": {
        "eco": "D16b",
        "fen": "rnbqkb1r/pp2pppp/2p5/3n4/P1pP4/2N2N2/1P2PPPP/R1BQKB1R w KQkq - 1 6",
        "hash": "2233699564581424046",
        "name": "Slav: 5.a4 Nd5"
    },
    "D16c": {
        "eco": "D16c",
        "fen": "rnbqkb1r/pp3ppp/2p1pn2/8/P1pP4/2N2N2/1P2PPPP/R1BQKB1R w KQkq - 0 6",
        "hash": "12436862047523892809",
        "name": "Slav: Soultanbeieff Variation"
    },
    "D16d": {
        "eco": "D16d",
        "fen": "rnbqkb1r/1p2pppp/2p2n2/p7/P1pP4/2N2N2/1P2PPPP/R1BQKB1R w KQkq a6 0 6",
        "hash": "6698501724170908299",
        "name": "Slav: Murey Variation"
    },
    "D16e": {
        "eco": "D16e",
        "fen": "r1bqkb1r/pp2pppp/n1p2n2/8/P1pP4/2N2N2/1P2PPPP/R1BQKB1R w KQkq - 1 6",
        "hash": "10695984802465571495",
        "name": "Slav: Smyslov Variation"
    },
    "D16f": {
        "eco": "D16f",
        "fen": "r1bqkb1r/pp2pppp/n1p2n2/4N3/P1pP4/2N5/1P2PPPP/R1BQKB1R b KQkq - 2 6",
        "hash": "5284721607005341649",
        "name": "Slav: Smyslov, 6.Ne5"
    },
    "D16g": {
        "eco": "D16g",
        "fen": "r1bqkb1r/pp2pppp/n1p2n2/8/P1pP4/2N1PN2/1P3PPP/R1BQKB1R b KQkq - 0 6",
        "hash": "4126008849753729539",
        "name": "Slav: Smyslov, 6.e3"
    },
    "D16h": {
        "eco": "D16h",
        "fen": "r2qkb1r/pp2pppp/n1p2n2/8/P1pP2b1/2N1PN2/1P3PPP/R1BQKB1R w KQkq - 1 7",
        "hash": "4292296592762168553",
        "name": "Slav: Smyslov, 6.e3 Bg4"
    },
    "D16i": {
        "eco": "D16i",
        "fen": "r1bqkb1r/pp2pppp/n1p2n2/8/P1pPP3/2N2N2/1P3PPP/R1BQKB1R b KQkq e3 0 6",
        "hash": "5794101694722695085",
        "name": "Slav: Smyslov, 6.e4"
    },
    "D16j": {
        "eco": "D16j",
        "fen": "r2qkb1r/pp2pppp/n1p2n2/8/P1pPP1b1/2N2N2/1P3PPP/R1BQKB1R w KQkq - 1 7",
        "hash": "5961361799116378439",
        "name": "Slav: Smyslov, 6.e4 Bg4"
    },
    "D16k": {
        "eco": "D16k",
        "fen": "r2qkb1r/pp3ppp/n1p1pn2/8/P1BPP1b1/2N2N2/1P3PPP/R1BQK2R w KQkq - 0 8",
        "hash": "13883827623883998628",
        "name": "Slav: Smyslov, 6.e4 Bg4 7.Bxc4 e6"
    },
    "D16l": {
        "eco": "D16l",
        "fen": "rn1qkb1r/pp2pppp/2p2n2/8/P1pP2b1/2N2N2/1P2PPPP/R1BQKB1R w KQkq - 1 6",
        "hash": "15581509271640436977",
        "name": "Slav: Bronstein (Steiner) Variation"
    },
    "D16m": {
        "eco": "D16m",
        "fen": "rn1qkb1r/pp2pppp/2p2n2/4N3/P1pP2b1/2N5/1P2PPPP/R1BQKB1R b KQkq - 2 6",
        "hash": "361550138857493895",
        "name": "Slav: Bronstein, 6.Ne5"
    },
    "D16n": {
        "eco": "D16n",
        "fen": "rn1qkb1r/pp2pppp/2p2n2/4N2b/P1pP4/2N5/1P2PPPP/R1BQKB1R w KQkq - 3 7",
        "hash": "7184038176353817650",
        "name": "Slav: Bronstein, 6.Ne5 Bh5"
    },
    "D16o": {
        "eco": "D16o",
        "fen": "rn1qkb1r/pp2pppp/2p2n2/4N2b/P1pP4/2N4P/1P2PPP1/R1BQKB1R b KQkq - 0 7",
        "hash": "10034311436475948480",
        "name": "Slav: Bronstein, 6.Ne5 Bh5 7.h3"
    },
    "D16p": {
        "eco": "D16p",
        "fen": "rn1qkb1r/pp2pppp/2p2n2/4N2b/P1pP4/2N3P1/1P2PP1P/R1BQKB1R b KQkq - 0 7",
        "hash": "5716316874677799946",
        "name": "Slav: Bronstein, 6.Ne5 Bh5 7.g3"
    },
    "D16q": {
        "eco": "D16q",
        "fen": "rn1qkb1r/pp2pppp/2p2n2/4N2b/P1pP4/2N2P2/1P2P1PP/R1BQKB1R b KQkq - 0 7",
        "hash": "937648780178684739",
        "name": "Slav: Bronstein, 6.Ne5 Bh5 7.f3"
    },
    "D16r": {
        "eco": "D16r",
        "fen": "rn1qkb1r/pp1npppp/2p5/4N2b/P1pP4/2N2P2/1P2P1PP/R1BQKB1R w KQkq - 1 8",
        "hash": "17601247393266594486",
        "name": "Slav: Bronstein, 6.Ne5 Bh5 7.f3 Nfd7"
    },
    "D16s": {
        "eco": "D16s",
        "fen": "rn1qkb1r/pp1n1ppp/2p5/4p2b/P1NPN3/5P2/1P2P1PP/R1BQKB1R b KQkq - 1 9",
        "hash": "12599527176706958450",
        "name": "Slav: Bronstein, 6.Ne5 Bh5 7.f3 Nfd7 8.Nxc4 e5 9.Ne4"
    },
    "D17a": {
        "eco": "D17a",
        "fen": "rn1qkb1r/pp2pppp/2p2n2/5b2/P1pP4/2N2N2/1P2PPPP/R1BQKB1R w KQkq - 1 6",
        "hash": "6482377080795658134",
        "name": "Slav: Czech Defence"
    },
    "D17b": {
        "eco": "D17b",
        "fen": "rn1qkb1r/pp2pppp/2p2n2/5b2/P1pP3N/2N5/1P2PPPP/R1BQKB1R b KQkq - 2 6",
        "hash": "7513625778681394481",
        "name": "Slav: Czech, 6.Nh4"
    },
    "D17c": {
        "eco": "D17c",
        "fen": "rn1qkb1r/pp3ppp/2p1pn2/5b2/P1pP3N/2N5/1P2PPPP/R1BQKB1R w KQkq - 0 7",
        "hash": "2175855339233551715",
        "name": "Slav: Czech, 6.Nh4 e6"
    },
    "D17d": {
        "eco": "D17d",
        "fen": "rn1qkb1r/pp3ppp/2p2n2/5p2/P1pP4/2N1P3/1P3PPP/R1BQKB1R b KQkq - 0 8",
        "hash": "14412489231139791282",
        "name": "Slav: Czech, 6.Nh4 e6 7.Nxf5 exf5 8.e3"
    },
    "D17e": {
        "eco": "D17e",
        "fen": "rnbqkb1r/pp2pppp/2p2n2/8/P1pP3N/2N5/1P2PPPP/R1BQKB1R w KQkq - 3 7",
        "hash": "16959618693604621500",
        "name": "Slav: Czech, 6.Nh4 Bc8"
    },
    "D17f": {
        "eco": "D17f",
        "fen": "rn1qkb1r/pp2pppp/2p2n2/4Nb2/P1pP4/2N5/1P2PPPP/R1BQKB1R b KQkq - 2 6",
        "hash": "9569824111274234592",
        "name": "Slav: Central Variation"
    },
    "D17g": {
        "eco": "D17g",
        "fen": "r2qkb1r/pp2pppp/n1p2n2/4Nb2/P1pP4/2N5/1P2PPPP/R1BQKB1R w KQkq - 3 7",
        "hash": "14577716329454210652",
        "name": "Slav: Central, 6.Ne5 Na6"
    },
    "D17h": {
        "eco": "D17h",
        "fen": "r2qkb1r/pp1npppp/2p2n2/4Nb2/P1pP4/2N5/1P2PPPP/R1BQKB1R w KQkq - 3 7",
        "hash": "13199385366031826732",
        "name": "Slav: Central, 6.Ne5 Nbd7"
    },
    "D17i": {
        "eco": "D17i",
        "fen": "r3kb1r/ppqn1ppp/2p2n2/4pb2/P1NP4/2N3P1/1P2PP1P/R1BQKB1R w KQkq e6 0 9",
        "hash": "15646520387755849209",
        "name": "Slav: Central, Carlsbad Variation"
    },
    "D17j": {
        "eco": "D17j",
        "fen": "r3kb1r/ppqn2pp/2p2p2/4nb2/P1N2B2/2N3P1/1P2PPBP/R2QK2R w KQkq - 0 12",
        "hash": "7515144730380223794",
        "name": "Slav: Central, Carlsbad, Main Line"
    },
    "D17k": {
        "eco": "D17k",
        "fen": "rn1qkb1r/pp3ppp/2p1pn2/4Nb2/P1pP4/2N5/1P2PPPP/R1BQKB1R w KQkq - 0 7",
        "hash": "17490057229932069554",
        "name": "Slav: Central, 6.Ne5 e6"
    },
    "D17l": {
        "eco": "D17l",
        "fen": "rn1qkb1r/pp3ppp/4pn2/2p1Nb2/P1pP4/2N2P2/1P2P1PP/R1BQKB1R w KQkq - 0 8",
        "hash": "1213111764236906508",
        "name": "Slav: Central, Huebner (7...c5)"
    },
    "D17m": {
        "eco": "D17m",
        "fen": "rn1qk2r/pp3ppp/2p1pn2/4Nb2/PbpP4/2N2P2/1P2P1PP/R1BQKB1R w KQkq - 1 8",
        "hash": "6145624953303049697",
        "name": "Slav: Central, 7.f3 Bb4"
    },
    "D17n": {
        "eco": "D17n",
        "fen": "rn1qk2r/pp3ppp/2p1pn2/5b2/PbNP4/2N2P2/1P2P1PP/R1BQKB1R b KQkq - 0 8",
        "hash": "11224677906914869307",
        "name": "Slav: Central, 7.f3 Bb4 8.Nxc4"
    },
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        "hash": "18172295748331349165",
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        "hash": "4050983446022003111",
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        "hash": "17445376496157831344",
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        "hash": "1492768558427351132",
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        "hash": "13917754435095809773",
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        "hash": "15923939533377028611",
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        "hash": "13055644683060319787",
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        "hash": "1730425800749522575",
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        "hash": "17023694313038200347",
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        "hash": "303858524340955727",
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        "hash": "6906746402197171161",
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        "hash": "11061938499134533649",
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        "hash": "8304367248051319777",
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        "hash": "8987547339916674054",
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        "hash": "15102658631824444578",
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        "hash": "4894711226373955353",
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        "hash": "1910433956715525929",
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        "hash": "8966072503708899478",
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        "hash": "13465896505310666702",
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        "hash": "2888833624220833499",
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        "hash": "12550417709803565919",
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        "hash": "551671236195985012",
        "name": "QGD: 3.Nc3"
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        "fen": "rnbqkbnr/1pp2ppp/p3p3/3p4/2PP4/2N5/PP2PPPP/R1BQKBNR w KQkq - 0 4",
        "hash": "15370820587587100328",
        "name": "QGD: Janowski Variation"
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        "fen": "rnbqk1nr/ppp2ppp/4p3/3p4/1bPP4/2N5/PP2PPPP/R1BQKBNR w KQkq - 2 4",
        "hash": "14908752150547197526",
        "name": "QGD: 3.Nc3 Bb4"
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        "eco": "D31d",
        "fen": "rnbqk1nr/ppp1bppp/4p3/3p4/2PP4/2N5/PP2PPPP/R1BQKBNR w KQkq - 2 4",
        "hash": "1399385826846608101",
        "name": "QGD: Alatortsev Variation"
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        "eco": "D31e",
        "fen": "rnbqk1nr/ppp1bppp/4p3/3P4/3P4/2N5/PP2PPPP/R1BQKBNR b KQkq - 0 4",
        "hash": "2107972918480117496",
        "name": "QGD: Alatortsev, Exchange"
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    "D31f": {
        "eco": "D31f",
        "fen": "rnbqk1nr/pp2bppp/2p5/3p4/3P1B2/2N5/PP2PPPP/R2QKBNR w KQkq - 0 6",
        "hash": "7745017740441905131",
        "name": "QGD: Alatortsev, 5.Bf4 c6"
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    "D31g": {
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        "hash": "4994491596140046018",
        "name": "QGD: Alatortsev, 5.Bf4 c6 6.e3 Bf5"
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    "D31h": {
        "eco": "D31h",
        "fen": "rn1qk1nr/pp2bppp/2p5/3p1b2/3P1BP1/2N1P3/PP3P1P/R2QKBNR b KQkq g3 0 7",
        "hash": "16574089352408992735",
        "name": "QGD: Alatortsev, 5.Bf4 c6 6.e3 Bf5 7.g4"
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    "D31i": {
        "eco": "D31i",
        "fen": "rnbqkbnr/pp3ppp/2p1p3/3p4/2PP4/2N5/PP2PPPP/R1BQKBNR w KQkq - 0 4",
        "hash": "10798791872932476367",
        "name": "Semi-Slav"
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    "D31j": {
        "eco": "D31j",
        "fen": "rnbqkbnr/pp3ppp/2p1p3/3P4/3P4/2N5/PP2PPPP/R1BQKBNR b KQkq - 0 4",
        "hash": "11238618743549321682",
        "name": "Semi-Slav: 4.cxd5"
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    "D31k": {
        "eco": "D31k",
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        "hash": "9189503787248533540",
        "name": "Semi-Slav: 4.cxd5 exd5 5.Nf3"
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        "eco": "D31l",
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        "hash": "18203202862654900649",
        "name": "Semi-Slav: 4.cxd5 exd5 5.Nf3 Bf5"
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    "D31m": {
        "eco": "D31m",
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        "hash": "9203008490221128570",
        "name": "Semi-Slav: 4.cxd5 exd5 5.Bf4"
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    "D31n": {
        "eco": "D31n",
        "fen": "rnbqkbnr/pp3ppp/2p1p3/3p4/2PP4/2N1P3/PP3PPP/R1BQKBNR b KQkq - 0 4",
        "hash": "4102851056581246315",
        "name": "Semi-Slav: 4.e3"
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    "D31o": {
        "eco": "D31o",
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        "hash": "7142275500715949309",
        "name": "Semi-Slav: 4.e3 Nf6"
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    "D31p": {
        "eco": "D31p",
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        "hash": "5672828023781823730",
        "name": "Semi-Slav: 4.Nf3"
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        "eco": "D31q",
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        "hash": "11294981936396335633",
        "name": "Semi-Slav: Noteboom Variation"
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    "D31r": {
        "eco": "D31r",
        "fen": "rnbqkbnr/pp3ppp/2p1p3/8/P1pP4/2N2N2/1P2PPPP/R1BQKB1R b KQkq a3 0 5",
        "hash": "17831625412280102879",
        "name": "Semi-Slav: Noteboom, 5.a4"
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    "D31s": {
        "eco": "D31s",
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        "hash": "17518696301431968356",
        "name": "Semi-Slav: Noteboom, 5.a4 Bb4 6.e3 b5"
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    "D31t": {
        "eco": "D31t",
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        "hash": "6667867333910869488",
        "name": "Semi-Slav: Noteboom, Abrahams Variation"
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    "D31u": {
        "eco": "D31u",
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        "hash": "10463054166385270707",
        "name": "Semi-Slav: Noteboom, Abrahams, Main Line"
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        "eco": "D31v",
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        "hash": "10829650198994027552",
        "name": "Semi-Slav: Noteboom, Abrahams, Main Line, 14.O-O O-O"
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        "eco": "D31w",
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        "hash": "5898042839492937925",
        "name": "Semi-Slav: Marshall Gambit"
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        "hash": "18074007752257806624",
        "name": "Semi-Slav: Marshall Gambit, 5.Nxe4 Bb4+"
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        "hash": "2131050320054370134",
        "name": "Semi-Slav: Marshall Gambit, 8.Be2"
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    "D31z": {
        "eco": "D31z",
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        "hash": "5986314598874948586",
        "name": "Semi-Slav: Marshall Gambit, 8.Be2 Na6"
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        "hash": "16273264397366078729",
        "name": "QGD Tarrasch"
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        "eco": "D32b",
        "fen": "rnbqkbnr/pp3ppp/4p3/2pp4/2PP4/2N2N2/PP2PPPP/R1BQKB1R b KQkq - 1 4",
        "hash": "4229675313055026228",
        "name": "QGD Tarrasch: 4.Nf3"
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        "eco": "D32c",
        "fen": "rnbqkbnr/pp3ppp/8/3pp3/2PN4/2N5/PP2PPPP/R1BQKB1R w KQkq - 0 6",
        "hash": "495933555198089905",
        "name": "QGD Tarrasch: 4.Nf3 cxd4 5.Nxd4 e5"
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        "eco": "D32d",
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        "hash": "17292877480336177428",
        "name": "QGD Tarrasch: 4.cxd5"
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        "eco": "D32e",
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        "hash": "10431913998746949471",
        "name": "QGD Tarrasch: von Hennig-Schara Gambit, 5.Qxd4 Nc6 6.Qd1 exd5 7.e3"
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        "hash": "7081526722633441961",
        "name": "QGD Tarrasch: von Hennig-Schara Gambit, 5.Qa4+"
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        "eco": "D32g",
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        "hash": "9309680975604844447",
        "name": "QGD Tarrasch: von Hennig-Schara Gambit, 7.Qxd5 Nc6 8.Bg5"
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        "eco": "D32h",
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        "hash": "11244391253750529386",
        "name": "QGD Tarrasch: von Hennig-Schara Gambit, 7.Qxd5 Nc6 8.Nf3"
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        "eco": "D32i",
        "fen": "2kr3r/pp1bqppp/2n2n2/2b5/8/2N1PN2/PP2BPPP/R1BQK2R w KQ - 3 12",
        "hash": "9769075919342188730",
        "name": "QGD Tarrasch: von Hennig-Schara Gambit, Main Line (11.Be2 O-O-O)"
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        "eco": "D32j",
        "fen": "rnbqkbnr/pp3ppp/8/2pp4/3P4/2N5/PP2PPPP/R1BQKBNR w KQkq - 0 5",
        "hash": "15053419976288369119",
        "name": "QGD Tarrasch: 4.cxd5 exd5"
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    "D32k": {
        "eco": "D32k",
        "fen": "rnbqkbnr/pp3ppp/8/2Pp4/8/2N5/PP2PPPP/R1BQKBNR b KQkq - 0 5",
        "hash": "12613280075865108147",
        "name": "QGD Tarrasch: 5.dxc5"
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        "eco": "D32l",
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        "hash": "1508548639351325909",
        "name": "QGD Tarrasch: Marshall Gambit"
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        "eco": "D32m",
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        "hash": "832199735984625890",
        "name": "QGD Tarrasch: 5.Nf3"
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        "hash": "11556599079951154657",
        "name": "QGD Tarrasch: 5.Nf3 Nc6"
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        "hash": "8878194808065677186",
        "name": "QGD Tarrasch: 5.Nf3 Nc6 6.Bf4"
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        "hash": "7366515238857008681",
        "name": "QGD Tarrasch: 5.Nf3 Nc6 6.Bg5"
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        "hash": "8284210415797881528",
        "name": "QGD Tarrasch: 5.Nf3 Nc6 6.Bg5 Be7"
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        "hash": "958152984477807941",
        "name": "QGD Tarrasch: 5.Nf3 Nc6 6.e3"
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        "hash": "7312981900030207824",
        "name": "QGD Tarrasch: 5.Nf3 Nc6 6.e3 Nf6 7.Bb5"
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        "hash": "2675907960086511216",
        "name": "QGD Tarrasch: 5.Nf3 Nc6 6.e3 Nf6 7.Be2"
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        "eco": "D32u",
        "fen": "r1bqk2r/pp2bppp/2n2n2/2pp4/3P4/2N1PN2/PP2BPPP/R1BQK2R w KQkq - 3 8",
        "hash": "3598041797016883937",
        "name": "QGD Tarrasch: 5.Nf3 Nc6 6.e3 Nf6 7.Be2 Be7"
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        "hash": "8807921747772626870",
        "name": "QGD Tarrasch: 5.Nf3 Nc6 6.e3 Nf6 7.Be2 cxd4"
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        "fen": "r1bq1rk1/pp3ppp/2nb1n2/3p4/3N4/2N1P3/PP2BPPP/R1BQ1RK1 w - - 3 10",
        "hash": "14784649579033634375",
        "name": "QGD Tarrasch: 5.Nf3 Nc6 6.e3 Nf6 7.Be2 cxd4 8.Nxd4 Bd6 9.O-O O-O"
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        "hash": "4723079884147051818",
        "name": "QGD Tarrasch: 5.Nf3 Nc6 6.e3 Nf6 7.Be2 cxd4 8.Nxd4 Bd6 9.O-O O-O 10.b3"
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        "hash": "10126329347641959897",
        "name": "QGD Tarrasch: 6.g3 (Schlecter/Rubinstein)"
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        "eco": "D33b",
        "fen": "r1bqkbnr/pp3ppp/2n5/3p4/3p4/2N2NP1/PP2PP1P/R1BQKB1R w KQkq - 0 7",
        "hash": "15247298100104760351",
        "name": "QGD Tarrasch: 6.g3 cxd4"
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        "eco": "D33c",
        "fen": "r1bqkbnr/pp3ppp/2n5/3p4/2pP4/2N2NP1/PP2PP1P/R1BQKB1R w KQkq - 0 7",
        "hash": "6095701817556160340",
        "name": "QGD Tarrasch: Swedish Variation"
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    "D33d": {
        "eco": "D33d",
        "fen": "r1bqkbnr/pp3ppp/2n5/3p4/2pPP3/2N2NP1/PP3P1P/R1BQKB1R b KQkq e3 0 7",
        "hash": "10421124793953940062",
        "name": "QGD Tarrasch: Swedish, Rey Ardid Variation"
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    "D33e": {
        "eco": "D33e",
        "fen": "r1bqkbnr/pp3ppp/2n5/3p4/2pP4/2N2NP1/PP2PPBP/R1BQK2R b KQkq - 1 7",
        "hash": "16242350790378690349",
        "name": "QGD Tarrasch: Swedish, 7.Bg2"
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    "D33f": {
        "eco": "D33f",
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        "hash": "7499554904181247906",
        "name": "QGD Tarrasch: Swedish, 7.Bg2 Bb4 8.O-O Nge7"
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        "eco": "D33g",
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        "hash": "11785907396768924130",
        "name": "QGD Tarrasch: Swedish, 9.a3"
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        "eco": "D33h",
        "fen": "r1bqk2r/pp2nppp/2n5/3p4/1bpP4/2N2NP1/PP1BPPBP/R2Q1RK1 b kq - 5 9",
        "hash": "4728392335415731366",
        "name": "QGD Tarrasch: Swedish, 9.Bd2"
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        "eco": "D33i",
        "fen": "r1bqk2r/pp2nppp/2n5/3pN3/1bpP4/2N3P1/PP2PPBP/R1BQ1RK1 b kq - 5 9",
        "hash": "13054557340404968148",
        "name": "QGD Tarrasch: Swedish, 9.Ne5"
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    "D33j": {
        "eco": "D33j",
        "fen": "r1bqk2r/pp2nppp/2n5/3p4/1bpPP3/2N2NP1/PP3PBP/R1BQ1RK1 b kq e3 0 9",
        "hash": "12399755832450069160",
        "name": "QGD Tarrasch: Swedish, 9.e4"
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        "eco": "D33k",
        "fen": "r1bqk2r/pp2nppp/2n5/8/1bpPp3/2N2NP1/PP3PBP/R1BQ1RK1 w kq - 0 10",
        "hash": "7250328323836478200",
        "name": "QGD Tarrasch: Swedish, 9.e4 dxe4"
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        "eco": "D33l",
        "fen": "r1bqkb1r/pp3ppp/2n2n2/2pp4/3P4/2N2NP1/PP2PP1P/R1BQKB1R w KQkq - 1 7",
        "hash": "15522155390400046159",
        "name": "QGD Tarrasch: 6.g3 Nf6 (Prague)"
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        "fen": "r2qkb1r/pp3ppp/2n1bn2/2pp4/3P4/2N2NP1/PP2PPBP/R1BQK2R w KQkq - 3 8",
        "hash": "3900530416455321406",
        "name": "QGD Tarrasch: 7.Bg2 Be6"
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        "eco": "D33n",
        "fen": "r2qkb1r/pp3ppp/2n2n2/2pp4/3P2b1/2N2NP1/PP2PPBP/R1BQK2R w KQkq - 3 8",
        "hash": "6938410237285987036",
        "name": "QGD Tarrasch: Wagner Variation"
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        "eco": "D33o",
        "fen": "r1bqkb1r/pp3ppp/2n2n2/3p4/3p4/2N2NP1/PP2PPBP/R1BQK2R w KQkq - 0 8",
        "hash": "4433617216594515440",
        "name": "QGD Tarrasch: 7.Bg2 cxd4"
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    "D33p": {
        "eco": "D33p",
        "fen": "r1bqk2r/pp2bppp/2n2n2/3p4/3N4/2N3P1/PP2PPBP/R1BQK2R w KQkq - 1 9",
        "hash": "5683386515786705743",
        "name": "QGD Tarrasch: 7.Bg2 cxd4 8.Nxd4 Be7"
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    "D33q": {
        "eco": "D33q",
        "fen": "r1bq1rk1/pp2bppp/2n2n2/3p4/3N4/2N1B1P1/PP2PPBP/R2Q1RK1 b - - 4 10",
        "hash": "5263120835235152442",
        "name": "QGD Tarrasch: 7.Bg2 cxd4 8.Nxd4 Be7 9.O-O O-O 10.Be3"
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    "D34a": {
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        "fen": "r1bqk2r/pp2bppp/2n2n2/2pp4/3P4/2N2NP1/PP2PPBP/R1BQK2R w KQkq - 3 8",
        "hash": "8526886967310536871",
        "name": "QGD Tarrasch: 7.Bg2 Be7"
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    "D34b": {
        "eco": "D34b",
        "fen": "r2qk2r/pp2bppp/2n1bn2/2pp4/3P4/2N2NP1/PP2PPBP/R1BQ1RK1 w kq - 5 9",
        "hash": "6672222918681129151",
        "name": "QGD Tarrasch: 7.Bg2 Be7 8.O-O Be6"
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    "D34c": {
        "eco": "D34c",
        "fen": "r1bq1rk1/pp2bppp/2n2n2/2pp4/3P4/2N2NP1/PP2PPBP/R1BQ1RK1 w - - 5 9",
        "hash": "182395816581390940",
        "name": "QGD Tarrasch: 8.O-O O-O (Main Line)"
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    "D34d": {
        "eco": "D34d",
        "fen": "r1bq1rk1/pp2bppp/2n2n2/2pp4/3P4/1PN2NP1/P3PPBP/R1BQ1RK1 b - - 0 9",
        "hash": "10245232114149919025",
        "name": "QGD Tarrasch: 9.b3"
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    "D34e": {
        "eco": "D34e",
        "fen": "r1bq1rk1/pp2bppp/2n5/2pp4/3Pn3/1PN2NP1/P3PPBP/R1BQ1RK1 w - - 1 10",
        "hash": "12981112231551632587",
        "name": "QGD Tarrasch: 9.b3 Ne4"
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    "D34f": {
        "eco": "D34f",
        "fen": "r1bq1rk1/pp2bppp/2n2n2/2pp4/3P1B2/2N2NP1/PP2PPBP/R2Q1RK1 b - - 6 9",
        "hash": "15698675867640727615",
        "name": "QGD Tarrasch: 9.Bf4"
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    "D34g": {
        "eco": "D34g",
        "fen": "r1bq1rk1/pp2bppp/2n2n2/2pp4/3P4/2N1BNP1/PP2PPBP/R2Q1RK1 b - - 6 9",
        "hash": "8178743545036011986",
        "name": "QGD Tarrasch: 9.Be3"
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    "D34h": {
        "eco": "D34h",
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        "name": "QGD: Exchange, Main Line, 9.Nf3 Re8 10.O-O Nf8 11.h3 g6"
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        "hash": "1027302057991117252",
        "name": "QGD: Exchange, Main Line, 9.Nf3 Re8 10.O-O Nf8 11.Rab1"
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        "hash": "9825447037809366356",
        "name": "QGD: Exchange, Main Line, 9.Nf3 Re8 10.O-O Nf8 11.Rab1 a5"
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        "hash": "9740501023354455775",
        "name": "QGD: 4.Nf3"
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        "hash": "13028435774397737747",
        "name": "QGD: Westphalia without Bg5"
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        "hash": "8041928989072621936",
        "name": "QGD: Westphalia: 4.Nf3 Nbd7 5.Bf4"
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        "hash": "10655875146498484814",
        "name": "QGD: 4.Nf3 Be7"
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        "hash": "4524999762183398122",
        "name": "QGD: 4.Nf3 Be7 5.e3"
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        "hash": "3775400742759877377",
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        "hash": "7019224347465353586",
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        "hash": "5239273496979456045",
        "name": "QGD: Classical Variation"
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        "hash": "4764050615717177798",
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        "hash": "15912192907167845550",
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        "hash": "9536730005809239801",
        "name": "QGD: Classical, 5...O-O 6.e3 b6"
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        "hash": "9028276437686350553",
        "name": "QGD: Classical, 5...O-O 6.e3 c6"
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        "hash": "667058137912912415",
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        "hash": "8548675450275724659",
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        "hash": "1057133896744217123",
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        "hash": "13813318170089395783",
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        "hash": "16123777772135759108",
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        "hash": "482095370727300235",
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        "hash": "8104088323716241711",
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        "hash": "4512037331866063635",
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        "hash": "5650996174306987773",
        "name": "QGD: Ragozin"
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        "hash": "11297528547013704838",
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        "hash": "4111682508692229528",
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        "hash": "13853406182781654683",
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        "hash": "4631605703862573792",
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        "hash": "13332988247593828835",
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        "hash": "3170254093245319414",
        "name": "QGD: Ragozin, 5.cxd5 exd5 6.Bg5 h6"
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        "hash": "9815041381031351605",
        "name": "QGD: Ragozin, 5.Bg5"
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        "hash": "13534851248130029817",
        "name": "QGD: Ragozin, Westphalia Variation"
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        "hash": "4319589121425608779",
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        "hash": "2866105499604919435",
        "name": "QGD: Ragozin, Westphalia, 7.e3"
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        "hash": "1927896077713169440",
        "name": "QGD: Ragozin, 5.Bg5 h6"
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        "hash": "12774191514652324416",
        "name": "QGD: Ragozin, 5.Bg5 h6 6.Bxf6 Qxf6"
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        "hash": "13793839894652986973",
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        "hash": "2047529462508468964",
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        "hash": "7591217157703010257",
        "name": "QGD: Ragozin, 5.Bg5 h6 6.Bxf6 Qxf6 7.e3 O-O 8.Rc1"
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        "hash": "6498748208932256726",
        "name": "QGD: Ragozin, Vienna Variation"
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        "hash": "9841645428282624429",
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        "hash": "11400647332608100060",
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        "hash": "8666876175800028577",
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        "hash": "1819448801271049157",
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        "hash": "5053391991483728387",
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        "hash": "523932342377274083",
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        "hash": "11252066191596783888",
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        "hash": "9069735791432356727",
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        "hash": "9625532689611399410",
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        "hash": "13801701880128908817",
        "name": "QGD: Ragozin, Vienna, 6.e4 c5 7.Bxc4, 8...Bxc3+, 10.Bb5+"
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        "hash": "7015737115117358498",
        "name": "QGD: Semi-Tarrasch"
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        "hash": "15617875348252535191",
        "name": "QGD: Semi-Tarrasch, 5.e3 Be7"
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        "hash": "10623744385893002432",
        "name": "QGD: Semi-Tarrasch, 5.e3 cxd4"
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        "hash": "2199538917838388698",
        "name": "QGD: Semi-Tarrasch, 5.e3 a6"
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        "hash": "1201563007170734535",
        "name": "QGD: Semi-Tarrasch, 5.e3 a6 6.cxd5"
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        "hash": "7465980735071330309",
        "name": "QGD: Semi-Tarrasch, 5.e3 Nc6"
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        "hash": "3643935801963111030",
        "name": "QGD: Semi-Tarrasch, 5.e3 Nc6 6.Bd3"
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        "fen": "r1bq1rk1/pp3ppp/2nbpn2/2pp4/2PP4/2NBPN2/PP3PPP/R1BQ1RK1 w - - 5 8",
        "hash": "16290688973484196265",
        "name": "QGD: Semi-Tarrasch, Symmetrical Variation"
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        "fen": "r1bqkb1r/pp3ppp/2n1pn2/2pp4/2PP4/P1N1PN2/1P3PPP/R1BQKB1R b KQkq - 0 6",
        "hash": "12393990606141697605",
        "name": "QGD: Semi-Tarrasch, 5.e3 Nc6 6.a3"
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        "hash": "10810891274716128191",
        "name": "QGD: Semi-Tarrasch, 5.e3 Nc6 6.a3 Ne4"
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    "D40k": {
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        "fen": "r1bqkb1r/pp3ppp/2n1pn2/2p5/2pP4/P1N1PN2/1P3PPP/R1BQKB1R w KQkq - 0 7",
        "hash": "9081075407031386278",
        "name": "QGD: Semi-Tarrasch, 5.e3 Nc6 6.a3 dxc4"
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        "hash": "1537939680406787428",
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        "hash": "15183285129527291971",
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        "hash": "15207966320207662764",
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        "hash": "7704741518474554009",
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        "hash": "865367780013704486",
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        "hash": "4754331905032275897",
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        "hash": "969570333713577675",
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        "hash": "1717493844072500013",
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        "hash": "12053192850067563702",
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        "hash": "14310808113925190113",
        "name": "Semi-Slav: Moscow, 7.g3"
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        "eco": "D43q",
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        "hash": "15025465010277417279",
        "name": "Semi-Slav: Moscow, Hastings Variation"
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    "D43r": {
        "eco": "D43r",
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        "hash": "6585948707664434621",
        "name": "Semi-Slav: Moscow, 7.Qc2"
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        "eco": "D43s",
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        "hash": "5139114992901136765",
        "name": "Semi-Slav: Moscow, 7.e3"
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        "eco": "D43t",
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        "hash": "8408984142966508721",
        "name": "Semi-Slav: Moscow, 7.e3 Nd7"
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    "D43u": {
        "eco": "D43u",
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        "hash": "2431687768312221378",
        "name": "Semi-Slav: Moscow, 7.e3 Nd7 8.Bd3"
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        "eco": "D43v",
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        "hash": "17562118894214668321",
        "name": "Semi-Slav: Moscow, 7.e3 Nd7 8.Bd3 dxc4"
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        "eco": "D43w",
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        "hash": "4002426870596996415",
        "name": "Semi-Slav: Moscow, Main Line, 11.b4"
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        "hash": "1405252201450058837",
        "name": "Semi-Slav: Moscow, Main Line, 11.Rc1"
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        "eco": "D44a",
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        "hash": "75353901211836495",
        "name": "Semi-Slav: Botvinnik Accepted"
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        "eco": "D44b",
        "fen": "rnbqkb1r/pp3ppp/2p1pn2/6B1/P1pP4/2N2N2/1P2PPPP/R2QKB1R b KQkq a3 0 6",
        "hash": "7692934405626017153",
        "name": "Semi-Slav: Botvinnik, 6.a4"
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        "hash": "14198926798656068933",
        "name": "Semi-Slav: Botvinnik, 6.e4"
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    "D44d": {
        "eco": "D44d",
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        "hash": "14898378468891112886",
        "name": "Semi-Slav: Botvinnik, 7.a4"
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    "D44e": {
        "eco": "D44e",
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        "hash": "14155310990972470812",
        "name": "Semi-Slav: Botvinnik, 7.e5"
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        "eco": "D44f",
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        "hash": "11002005130139992189",
        "name": "Semi-Slav: Botvinnik, 9.exf6"
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        "hash": "8601831714915675488",
        "name": "Semi-Slav: Botvinnik, Ekstrom Variation"
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    "D44h": {
        "eco": "D44h",
        "fen": "rnbqkb1r/p4p2/2p1pn1p/1p2P1N1/2pP3B/2N5/PP3PPP/R2QKB1R b KQkq - 0 9",
        "hash": "17288633386590238599",
        "name": "Semi-Slav: Botvinnik, 9.Nxg5"
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        "hash": "3169777186280899122",
        "name": "Semi-Slav: Botvinnik, Alatortsev Variation"
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        "hash": "10093336879911707773",
        "name": "Semi-Slav: Botvinnik, 9.Nxg5"
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        "hash": "18225348845877620265",
        "name": "Semi-Slav: Botvinnik, Lilienthal Variation"
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        "hash": "2710858481923936166",
        "name": "Semi-Slav: Botvinnik, Lilienthal, 11...Qa5"
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        "hash": "5511626059047420338",
        "name": "Semi-Slav: Botvinnik, Lilienthal, 11...Bb7"
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        "hash": "7649841448647844010",
        "name": "Semi-Slav: Botvinnik, Szabo Variation"
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        "hash": "14190603871600567412",
        "name": "Semi-Slav: Botvinnik, Main Line"
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        "hash": "6384367922928522199",
        "name": "Semi-Slav: Botvinnik, Main Line, 12.g3"
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        "hash": "15295576905486290456",
        "name": "Semi-Slav: Botvinnik, Main Line, 12.g3 c5"
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        "hash": "12228244010174549663",
        "name": "Semi-Slav: Botvinnik, Main Line, 12.g3 c5 13.d5 Qb6"
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        "hash": "13293105817214541248",
        "name": "Semi-Slav: 5.e3"
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        "hash": "2027451944848231652",
        "name": "Semi-Slav: 5.e3 Bd6"
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        "eco": "D45c",
        "fen": "rnbqk2r/pp2bppp/2p1pn2/3p4/2PP4/2N1PN2/PP3PPP/R1BQKB1R w KQkq - 1 6",
        "hash": "12445392594784743761",
        "name": "Semi-Slav: 5.e3 Be7"
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        "eco": "D45d",
        "fen": "rnbqkb1r/pp3ppp/2p1p3/3p4/2PPn3/2N1PN2/PP3PPP/R1BQKB1R w KQkq - 1 6",
        "hash": "9399810462252126266",
        "name": "Semi-Slav: 5.e3 Ne4"
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        "eco": "D45e",
        "fen": "rnbqkb1r/1p3ppp/p1p1pn2/3p4/2PP4/2N1PN2/PP3PPP/R1BQKB1R w KQkq - 0 6",
        "hash": "7677908098343806236",
        "name": "Semi-Slav: Accelerated Meran (Alekhine Variation)"
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        "eco": "D45f",
        "fen": "r1bqkb1r/pp1n1ppp/2p1pn2/3p4/2PP4/2N1PN2/PP3PPP/R1BQKB1R w KQkq - 1 6",
        "hash": "10059319811599020044",
        "name": "Semi-Slav: 5.e3 Nbd7"
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    "D45g": {
        "eco": "D45g",
        "fen": "r1bqkb1r/pp1n1ppp/2p1pn2/3p4/2PP4/P1N1PN2/1P3PPP/R1BQKB1R b KQkq - 0 6",
        "hash": "4613325614628486732",
        "name": "Semi-Slav: 6.a3"
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    "D45h": {
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        "fen": "r1bqkb1r/pp1n1ppp/2p1pn2/3p4/2PP4/2N1PN2/PPQ2PPP/R1B1KB1R b KQkq - 2 6",
        "hash": "4215527647041457256",
        "name": "Semi-Slav: 6.Qc2"
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        "eco": "D45i",
        "fen": "r1bqkb1r/p2n1ppp/1pp1pn2/3p4/2PP4/2N1PN2/PPQ2PPP/R1B1KB1R w KQkq - 0 7",
        "hash": "5902487516367109107",
        "name": "Semi-Slav: 6.Qc2 b6"
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        "eco": "D45j",
        "fen": "r1bqk2r/pp1nbppp/2p1pn2/3p4/2PP4/2N1PN2/PPQ2PPP/R1B1KB1R w KQkq - 3 7",
        "hash": "3336291978073940217",
        "name": "Semi-Slav: 6.Qc2 Be7"
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        "eco": "D45k",
        "fen": "r1bqk2r/pp1n1ppp/2pbpn2/3p4/2PP4/2N1PN2/PPQ2PPP/R1B1KB1R w KQkq - 3 7",
        "hash": "11446177238108888396",
        "name": "Semi-Slav: 6.Qc2 Bd6"
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        "eco": "D45l",
        "fen": "r1bqk2r/pp1n1ppp/2pbpn2/3p4/2PP2P1/2N1PN2/PPQ2P1P/R1B1KB1R b KQkq g3 0 7",
        "hash": "4437730476988411985",
        "name": "Semi-Slav: 6.Qc2 Bd6 7.g4"
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        "eco": "D45m",
        "fen": "r1bqk2r/pp1n1ppp/2pbpn2/8/2pP2P1/2N1PN2/PPQ2P1P/R1B1KB1R w KQkq - 0 8",
        "hash": "17263358851469500082",
        "name": "Semi-Slav: 6.Qc2 Bd6 7.g4 dxc4"
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        "eco": "D45n",
        "fen": "r1bqk2r/pp1n1ppp/2p1pn2/3p4/1bPP2P1/2N1PN2/PPQ2P1P/R1B1KB1R w KQkq - 1 8",
        "hash": "12131253142148557918",
        "name": "Semi-Slav: 6.Qc2 Bd6 7.g4 Bb4"
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        "eco": "D45o",
        "fen": "r1bqk2r/pp1n1ppp/2pbp3/3p4/2PP2n1/2N1PN2/PPQ2P1P/R1B1KB1R w KQkq - 0 8",
        "hash": "6895382061603239405",
        "name": "Semi-Slav: 6.Qc2 Bd6 7.g4 Nxg4"
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        "eco": "D45p",
        "fen": "r1bqk2r/pp1n1ppp/2pbpn2/3p4/2PP4/1PN1PN2/P1Q2PPP/R1B1KB1R b KQkq - 0 7",
        "hash": "1332676096745354785",
        "name": "Semi-Slav: 6.Qc2 Bd6 7.b3"
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    "D45q": {
        "eco": "D45q",
        "fen": "r1bq1rk1/pp1n1ppp/2pbpn2/3p4/2PP4/1PN1PN2/PBQ2PPP/R3KB1R b KQ - 2 8",
        "hash": "15612460844664505125",
        "name": "Semi-Slav: 6.Qc2 Bd6 7.b3 O-O 8.Bb2"
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    "D45r": {
        "eco": "D45r",
        "fen": "r1bq1rk1/pp1n1ppp/2pbpn2/3p4/2PP4/1PN1PN2/P1Q1BPPP/R1B1K2R b KQ - 2 8",
        "hash": "7734637242996856169",
        "name": "Semi-Slav: 6.Qc2 Bd6 7.b3 O-O 8.Be2"
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        "eco": "D45s",
        "fen": "r1bq1rk1/p2n1ppp/1ppbpn2/3p4/2PP4/1PN1PN2/P1Q1BPPP/R1B1K2R w KQ - 0 9",
        "hash": "17938013754893042",
        "name": "Semi-Slav: 6.Qc2 Bd6 7.b3 O-O 8.Be2 b6"
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        "fen": "r1bqr1k1/pp1n1ppp/2pbpn2/3p4/2PP4/1PN1PN2/P1Q1BPPP/R1B1K2R w KQ - 3 9",
        "hash": "8576882115606835435",
        "name": "Semi-Slav: 6.Qc2 Bd6 7.b3 O-O 8.Be2 Re8"
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        "eco": "D45u",
        "fen": "r1bqk2r/pp1n1ppp/2pbpn2/3p4/2PP4/2N1PN2/PPQB1PPP/R3KB1R b KQkq - 4 7",
        "hash": "13210648941655569992",
        "name": "Semi-Slav: 6.Qc2 Bd6 7.Bd2"
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        "eco": "D45v",
        "fen": "r1bqk2r/pp1n1ppp/2pbpn2/3p4/2PP4/2N1PN2/PPQ1BPPP/R1B1K2R b KQkq - 4 7",
        "hash": "17102558624716232687",
        "name": "Semi-Slav: 6.Qc2 Bd6 7.Be2"
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        "eco": "D45w",
        "fen": "r1bq1rk1/pp1n1ppp/2pb1n2/3pp3/2PP4/2N1PN2/PPQ1BPPP/R1B2RK1 w - - 0 9",
        "hash": "11338995300528015481",
        "name": "Semi-Slav: 6.Qc2 Bd6 7.Be2 O-O 8.O-O e5"
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    "D45x": {
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        "fen": "r1b2rk1/pp1nqppp/2pbpn2/3p4/2PP4/2N1PN2/PPQ1BPPP/R1B2RK1 w - - 7 9",
        "hash": "178516191685872510",
        "name": "Semi-Slav: 6.Qc2 Bd6 7.Be2 O-O 8.O-O Qe7"
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    "D45y": {
        "eco": "D45y",
        "fen": "r1bqr1k1/pp1n1ppp/2pbpn2/3p4/2PP4/2N1PN2/PPQ1BPPP/R1B2RK1 w - - 7 9",
        "hash": "9643385165725810838",
        "name": "Semi-Slav: 6.Qc2 Bd6 7.Be2 O-O 8.O-O Re8"
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    "D46a": {
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        "fen": "r1bqkb1r/pp1n1ppp/2p1pn2/3p4/2PP4/2NBPN2/PP3PPP/R1BQK2R b KQkq - 2 6",
        "hash": "16038518597473563263",
        "name": "Semi-Slav: 6.Bd3"
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    "D46b": {
        "eco": "D46b",
        "fen": "r1bqk2r/pp1n1ppp/2p1pn2/3p4/1bPP4/2NBPN2/PP3PPP/R1BQK2R w KQkq - 3 7",
        "hash": "1717325794186869341",
        "name": "Semi-Slav: Romih Variation"
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    "D46c": {
        "eco": "D46c",
        "fen": "r1bqk2r/pp1nbppp/2p1pn2/3p4/2PP4/2NBPN2/PP3PPP/R1BQK2R w KQkq - 3 7",
        "hash": "14580456980461379310",
        "name": "Semi-Slav: Bogoljubow Variation"
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    "D46d": {
        "eco": "D46d",
        "fen": "r1bq1rk1/pp1nbppp/2p1pn2/3p4/2PP4/1PNBPN2/P4PPP/R1BQ1RK1 b - - 0 8",
        "hash": "3612949617599350648",
        "name": "Semi-Slav: Bogoljubow, 7.O-O O-O 8.b3"
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    "D46e": {
        "eco": "D46e",
        "fen": "r1bqk2r/pp1n1ppp/2pbpn2/3p4/2PP4/2NBPN2/PP3PPP/R1BQK2R w KQkq - 3 7",
        "hash": "8848498162624799579",
        "name": "Semi-Slav: Chigorin Defence"
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    "D46f": {
        "eco": "D46f",
        "fen": "r1bqk2r/pp1n1ppp/2pbpn2/3p4/2PP4/2NBPN2/PPQ2PPP/R1B1K2R b KQkq - 4 7",
        "hash": "14687747118821842751",
        "name": "Semi-Slav: Chigorin, 7.Qc2"
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    "D46g": {
        "eco": "D46g",
        "fen": "r1bqk2r/pp1n1ppp/2pbpn2/8/2pP4/2NBPN2/PPQ2PPP/R1B1K2R w KQkq - 0 8",
        "hash": "1860942249787552220",
        "name": "Semi-Slav: Chigorin, 7.Qc2 dxc4"
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    "D46h": {
        "eco": "D46h",
        "fen": "r1bq1rk1/pp1n1ppp/2pbpn2/3p4/2PP4/2NBPN2/PPQ2PPP/R1B1K2R w KQ - 5 8",
        "hash": "13942495289236354772",
        "name": "Semi-Slav: Chigorin, 7.Qc2 O-O"
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    "D46i": {
        "eco": "D46i",
        "fen": "r1bq1rk1/pp1n1ppp/2pbpn2/8/2BP4/2N1PN2/PPQ2PPP/R1B2RK1 b - - 0 9",
        "hash": "2644958737403691244",
        "name": "Semi-Slav: Chigorin, 7.Qc2 Main Line"
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    "D46j": {
        "eco": "D46j",
        "fen": "r1b2rk1/pp1nqppp/2pbpn2/8/2BP4/2N1PN2/PPQ2PPP/R1B2RK1 w - - 1 10",
        "hash": "13784138046251200134",
        "name": "Semi-Slav: Chigorin, 7.Qc2 Main Line, 9...Qe7"
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    "D46k": {
        "eco": "D46k",
        "fen": "r1bq1rk1/1p1n1ppp/p1pbpn2/8/2BP4/2N1PN2/PPQ2PPP/R1B2RK1 w - - 0 10",
        "hash": "17745086358913005616",
        "name": "Semi-Slav: Chigorin, 7.Qc2 Main Line, 9...a6"
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    "D46l": {
        "eco": "D46l",
        "fen": "r1bq1rk1/p2n1ppp/2pbpn2/1p6/2BP4/2N1PN2/PPQ2PPP/R1B2RK1 w - b6 0 10",
        "hash": "4949647171808853457",
        "name": "Semi-Slav: Chigorin, 7.Qc2 Main Line, 9...b5"
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    "D46m": {
        "eco": "D46m",
        "fen": "r1bq1rk1/p2n1ppp/2pbpn2/1p6/3P4/2N1PN2/PPQ1BPPP/R1B2RK1 b - - 1 10",
        "hash": "12418038922950468829",
        "name": "Semi-Slav: Chigorin, 7.Qc2 Main Line, 9...b5 10.Be2"
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    "D46n": {
        "eco": "D46n",
        "fen": "r1bqk2r/pp1n1ppp/2pbpn2/3p4/2PP4/2NBPN2/PP3PPP/R1BQ1RK1 b kq - 4 7",
        "hash": "340396735094421579",
        "name": "Semi-Slav: Chigorin, 7.O-O"
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    "D46o": {
        "eco": "D46o",
        "fen": "r1bq1rk1/pp1n1ppp/2pbpn2/3p4/2PP4/2NBPN2/PP3PPP/R1BQ1RK1 w - - 5 8",
        "hash": "1013794462479454624",
        "name": "Semi-Slav: Chigorin, 7.O-O O-O"
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    "D46p": {
        "eco": "D46p",
        "fen": "r1bq1rk1/pp1n1ppp/2pbpn2/3p4/2PPP3/2NB1N2/PP3PPP/R1BQ1RK1 b - - 0 8",
        "hash": "11524097787346034951",
        "name": "Semi-Slav: Chigorin, 7.O-O O-O 8.e4"
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    "D46q": {
        "eco": "D46q",
        "fen": "r1bq1rk1/pp1n1ppp/2pbpn2/8/2PPp3/2NB1N2/PP3PPP/R1BQ1RK1 w - - 0 9",
        "hash": "6298089364695650647",
        "name": "Semi-Slav: Chigorin, Main Line"
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    "D46r": {
        "eco": "D46r",
        "fen": "r1bq1rk1/pp1n1pp1/2pbp2p/8/2PPB3/5N2/PP3PPP/R1BQ1RK1 w - - 0 11",
        "hash": "9140477817299682870",
        "name": "Semi-Slav: Chigorin, Main Line, 10...h6"
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    "D47a": {
        "eco": "D47a",
        "fen": "r1bqkb1r/pp1n1ppp/2p1pn2/8/2pP4/2NBPN2/PP3PPP/R1BQK2R w KQkq - 0 7",
        "hash": "905921174353386652",
        "name": "Semi-Slav: Meran Variation"
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    "D47b": {
        "eco": "D47b",
        "fen": "r1bqkb1r/p2n1ppp/2p1pn2/1p6/3P4/1BN1PN2/PP3PPP/R1BQK2R b KQkq - 1 8",
        "hash": "17016909320919347854",
        "name": "Semi-Slav: Meran, Freymann Variation"
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    "D47c": {
        "eco": "D47c",
        "fen": "r1bqkb1r/p2n1ppp/2p1pn2/8/1p1P4/1BN1PN2/PP3PPP/R1BQK2R w KQkq - 0 9",
        "hash": "10224584030623837133",
        "name": "Semi-Slav: Meran, Freymann, 8...b4"
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    "D47d": {
        "eco": "D47d",
        "fen": "r1bqkb1r/p2n1ppp/2p1pn2/1p6/3P4/2N1PN2/PP2BPPP/R1BQK2R b KQkq - 1 8",
        "hash": "14828442103054941030",
        "name": "Semi-Slav: Meran, Capablanca Variation"
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    "D47e": {
        "eco": "D47e",
        "fen": "r1bqkb1r/3n1ppp/p1p1pn2/1p6/3P4/2N1PN2/PP2BPPP/R1BQK2R w KQkq - 0 9",
        "hash": "2251452869887247290",
        "name": "Semi-Slav: Meran, Capablanca, 8...a6"
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    "D47f": {
        "eco": "D47f",
        "fen": "r2qkb1r/pb1n1ppp/2p1pn2/1p6/3P4/2N1PN2/PP2BPPP/R1BQK2R w KQkq - 2 9",
        "hash": "9032387980838016253",
        "name": "Semi-Slav: Meran, Capablanca, 8...Bb7"
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    "D47g": {
        "eco": "D47g",
        "fen": "r2qkb1r/1b1n1ppp/p1p1pn2/1p6/3P4/2N1PN2/PP2BPPP/R1BQ1RK1 w kq - 0 10",
        "hash": "15121952598577952561",
        "name": "Semi-Slav: Meran, Capablanca, 8...Bb7 9.O-O a6"
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    "D47h": {
        "eco": "D47h",
        "fen": "r1bqkb1r/p2n1ppp/2p1pn2/1p6/3P4/2NBPN2/PP3PPP/R1BQK2R b KQkq - 1 8",
        "hash": "16952701131084837814",
        "name": "Semi-Slav: Meran, 8.Bd3"
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    "D47i": {
        "eco": "D47i",
        "fen": "r1bqkb1r/p2n1ppp/2p1pn2/8/1p1P4/2NBPN2/PP3PPP/R1BQK2R w KQkq - 0 9",
        "hash": "9982551842375461621",
        "name": "Semi-Slav: Meran, Lundin Variation"
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    "D47j": {
        "eco": "D47j",
        "fen": "r1bqkb1r/p2n1ppp/2p1pn2/8/1p1PN3/3BPN2/PP3PPP/R1BQK2R b KQkq - 1 9",
        "hash": "10727618301031277021",
        "name": "Semi-Slav: Meran, Lundin, 9.Ne4"
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    "D47k": {
        "eco": "D47k",
        "fen": "r1bqkb1r/p2n1ppp/2p1p3/8/1p1Pn3/3BPN2/PP3PPP/R1BQK2R w KQkq - 0 10",
        "hash": "3743903592962340680",
        "name": "Semi-Slav: Meran, Lundin, 9.Ne4 Nxe4"
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    "D47l": {
        "eco": "D47l",
        "fen": "r1bqk2r/p2nbppp/2p1pn2/8/1p1PN3/3BPN2/PP3PPP/R1BQK2R w KQkq - 2 10",
        "hash": "9235858014334438732",
        "name": "Semi-Slav: Meran, Lundin, 9.Ne4 Be7"
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    "D47m": {
        "eco": "D47m",
        "fen": "r2qkb1r/pb1n1ppp/2p1pn2/1p6/3P4/2NBPN2/PP3PPP/R1BQK2R w KQkq - 2 9",
        "hash": "6617018586089004077",
        "name": "Semi-Slav: Meran, Wade Variation"
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    "D47n": {
        "eco": "D47n",
        "fen": "r2qkb1r/pb1n1ppp/2p1pn2/1p6/3P4/2NBPN2/PP3PPP/R1BQ1RK1 b kq - 3 9",
        "hash": "2711488497114269501",
        "name": "Semi-Slav: Meran, Wade, 9.O-O"
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    "D47o": {
        "eco": "D47o",
        "fen": "r2qkb1r/pb1n1ppp/2p1pn2/8/1p1PN3/3BPN2/PP3PPP/R1BQ1RK1 b kq - 1 10",
        "hash": "6486621289218020694",
        "name": "Semi-Slav: Meran, Wade, 9.O-O b4 10.Ne4"
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        "eco": "D47p",
        "fen": "r2qk2r/pb1nbppp/2p1pN2/8/1p1P4/3BPN2/PP3PPP/R1BQ1RK1 b kq - 0 11",
        "hash": "732650712560966518",
        "name": "Semi-Slav: Meran, Wade, 9.O-O b4 10.Ne4 Be7 11.Nxf6+"
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    "D47q": {
        "eco": "D47q",
        "fen": "r2qkb1r/pb1n1ppp/2p1pn2/1p6/3PP3/2NB1N2/PP3PPP/R1BQK2R b KQkq - 0 9",
        "hash": "14566952403103820938",
        "name": "Semi-Slav: Meran, Wade, 9.e4"
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    "D47r": {
        "eco": "D47r",
        "fen": "r2qkb1r/pb1n1ppp/4p3/2pnP3/Np1P4/3B1N2/PP3PPP/R1BQK2R w KQkq - 1 12",
        "hash": "4739261579576162461",
        "name": "Semi-Slav: Meran, Wade, Main Line"
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    "D47s": {
        "eco": "D47s",
        "fen": "r2qkb1r/pb1n1ppp/4p3/2NnP3/1p1P4/3B1N2/PP3PPP/R1BQK2R b KQkq - 0 12",
        "hash": "1141198055207366715",
        "name": "Semi-Slav: Meran, Wade, Main Line, 12.Nxc5"
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    "D47t": {
        "eco": "D47t",
        "fen": "r2qkb1r/pb1n1ppp/4p3/2pnP3/Np1P4/3B1N2/PP3PPP/R1BQ1RK1 b kq - 2 12",
        "hash": "4589245503525938061",
        "name": "Semi-Slav: Meran, Wade, Main Line, 12.O-O"
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    "D48a": {
        "eco": "D48a",
        "fen": "r1bqkb1r/3n1ppp/p1p1pn2/1p6/3P4/2NBPN2/PP3PPP/R1BQK2R w KQkq - 0 9",
        "hash": "4157919974331796330",
        "name": "Semi-Slav: Meran, 8...a6"
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    "D48b": {
        "eco": "D48b",
        "fen": "r1bqkb1r/3n1ppp/p1p1pn2/1p6/P2P4/2NBPN2/1P3PPP/R1BQK2R b KQkq a3 0 9",
        "hash": "5943230623956049572",
        "name": "Semi-Slav: Meran, 8...a6 9.a4"
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    "D48c": {
        "eco": "D48c",
        "fen": "r1bqkb1r/3n1ppp/p1p1pn2/1p6/3P4/2NBPN2/PP3PPP/R1BQ1RK1 b kq - 1 9",
        "hash": "5171993964030431354",
        "name": "Semi-Slav: Meran, 8...a6 9.O-O"
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    "D48d": {
        "eco": "D48d",
        "fen": "r1bqkb1r/3n1ppp/p3pn2/1pp5/3P4/2NBPN2/PP2QPPP/R1B2RK1 b kq - 1 10",
        "hash": "6709528722042230321",
        "name": "Semi-Slav: Meran, 8...a6 9.O-O c5 10.Qe2"
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    "D48e": {
        "eco": "D48e",
        "fen": "r2qkb1r/1b1n1ppp/p1p1pn2/1p6/3P4/2NBPN2/PP3PPP/R1BQ1RK1 w kq - 2 10",
        "hash": "17822667458204221409",
        "name": "Semi-Slav: Meran, 8...a6 9.O-O Bb7"
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    "D48f": {
        "eco": "D48f",
        "fen": "r2qkb1r/1b1n1ppp/p1p1pn2/1p6/3PP3/2NB1N2/PP3PPP/R1BQ1RK1 b kq - 0 10",
        "hash": "7397932937516519238",
        "name": "Semi-Slav: Meran, 8...a6 9.O-O Bb7 10.e4"
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    "D48g": {
        "eco": "D48g",
        "fen": "r3kb1r/1bqn1ppp/p3pn2/1ppP4/4P3/2NB1N2/PP3PPP/R1BQ1RK1 w kq - 1 12",
        "hash": "6224214749506702293",
        "name": "Semi-Slav: Meran, 8...a6 9.O-O Bb7 10.e4 c5 11.d5 Qc7"
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    "D48h": {
        "eco": "D48h",
        "fen": "r1bqkb1r/3n1ppp/p1p1pn2/1p6/3PP3/2NB1N2/PP3PPP/R1BQK2R b KQkq - 0 9",
        "hash": "12128070099344358349",
        "name": "Semi-Slav: Meran, 8...a6 9.e4"
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    "D48i": {
        "eco": "D48i",
        "fen": "r2qkb1r/1b1n1ppp/p1p1pn2/1p6/3PP3/2NB1N2/PP3PPP/R1BQK2R w KQkq - 1 10",
        "hash": "1792371061596509270",
        "name": "Semi-Slav: Meran, 8...a6 9.e4 Bb7"
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    "D48j": {
        "eco": "D48j",
        "fen": "r1bqkb1r/3n1ppp/p1p1pn2/8/1p1PP3/2NB1N2/PP3PPP/R1BQK2R w KQkq - 0 10",
        "hash": "14520377748426171022",
        "name": "Semi-Slav: Meran, Pirc Variation"
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    "D48k": {
        "eco": "D48k",
        "fen": "r1bqkb1r/3n1ppp/p3pn2/1pp5/3PP3/2NB1N2/PP3PPP/R1BQK2R w KQkq - 0 10",
        "hash": "2635333197635036674",
        "name": "Semi-Slav: Meran, 8...a6 9.e4 c5"
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    "D48l": {
        "eco": "D48l",
        "fen": "r1bqkb1r/3n1ppp/p3pn2/1ppP4/4P3/2NB1N2/PP3PPP/R1BQK2R b KQkq - 0 10",
        "hash": "11428683155615395935",
        "name": "Semi-Slav: Meran, Reynolds Variation"
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    "D48m": {
        "eco": "D48m",
        "fen": "r1bqkb1r/3n1ppp/p4n2/1ppPp3/4P3/2NB1N2/PP3PPP/R1BQK2R w KQkq - 0 11",
        "hash": "11115739395289963826",
        "name": "Semi-Slav: Meran, Reynolds, 10...e5"
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    "D48n": {
        "eco": "D48n",
        "fen": "r1b1kb1r/2qn1ppp/p3pn2/1ppP4/4P3/2NB1N2/PP3PPP/R1BQK2R w KQkq - 1 11",
        "hash": "10990447641073647454",
        "name": "Semi-Slav: Meran, Reynolds, 10...Qc7"
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    "D48o": {
        "eco": "D48o",
        "fen": "r1bqkb1r/3n1ppp/p3pn2/1p1P4/2p1P3/2NB1N2/PP3PPP/R1BQK2R w KQkq - 0 11",
        "hash": "5081587211894168274",
        "name": "Semi-Slav: Meran, Reynolds, 10...c4"
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    "D48p": {
        "eco": "D48p",
        "fen": "r1bqkb1r/3n2pp/p3pn2/1p6/2p1P3/2NB1N2/PP3PPP/R1BQK2R w KQkq - 0 12",
        "hash": "8652318373655302264",
        "name": "Semi-Slav: Meran, Reynolds, 10...c4 11.dxe6 fxe6"
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    "D48q": {
        "eco": "D48q",
        "fen": "r1bqkb1r/3n1ppp/p3pn2/1pp1P3/3P4/2NB1N2/PP3PPP/R1BQK2R b KQkq - 0 10",
        "hash": "5038265097853239398",
        "name": "Semi-Slav: Meran, Old Main Line"
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    "D48r": {
        "eco": "D48r",
        "fen": "r1bqkb1r/3n1ppp/p3p3/1pp1P3/3P2n1/2NB1N2/PP3PPP/R1BQK2R w KQkq - 1 11",
        "hash": "15620972869364748554",
        "name": "Semi-Slav: Meran, Rabinovich Variation"
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    "D48s": {
        "eco": "D48s",
        "fen": "r1bqkb1r/3n1ppp/p3pn2/1p2P3/3p4/2NB1N2/PP3PPP/R1BQK2R w KQkq - 0 11",
        "hash": "1942521885275122080",
        "name": "Semi-Slav: Meran, Old Main Line, 10...cxd4"
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    "D49a": {
        "eco": "D49a",
        "fen": "r1bqkb1r/3n1ppp/p3pn2/1N2P3/3p4/3B1N2/PP3PPP/R1BQK2R b KQkq - 0 11",
        "hash": "18052113741402961691",
        "name": "Semi-Slav: Meran, Blumenfeld Variation"
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    "D49b": {
        "eco": "D49b",
        "fen": "r1bqkb1r/3n1ppp/p3p3/1N2P3/3p2n1/3B1N2/PP3PPP/R1BQK2R w KQkq - 1 12",
        "hash": "7468840288431105655",
        "name": "Semi-Slav: Meran, Old Main Line, Gligoric Variation"
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    "D49c": {
        "eco": "D49c",
        "fen": "r1bqkb1r/3n1ppp/p3p3/1N2P3/Q2p2n1/3B1N2/PP3PPP/R1B1K2R b KQkq - 2 12",
        "hash": "13043018138834244620",
        "name": "Semi-Slav: Meran, Old Main Line, Gligoric, 12.Qa4"
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    "D49d": {
        "eco": "D49d",
        "fen": "r1bqkb1r/3n1ppp/p3p3/1N2n3/Q2p4/3B1N2/PP3PPP/R1B1K2R w KQkq - 0 13",
        "hash": "12044260660675504062",
        "name": "Semi-Slav: Meran, Trifunovic Variation"
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    "D49e": {
        "eco": "D49e",
        "fen": "r1bqkb1r/5ppp/p3pn2/1N2n3/3p4/3B1N2/PP3PPP/R1BQK2R w KQkq - 0 12",
        "hash": "10143920179620650032",
        "name": "Semi-Slav: Meran, Sozin Variation"
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    "D49f": {
        "eco": "D49f",
        "fen": "r1bqkb1r/5ppp/4pn2/1p2N3/3p4/3B4/PP3PPP/R1BQ1RK1 b kq - 1 13",
        "hash": "1211182264185120957",
        "name": "Semi-Slav: Meran, Sozin, Rellstab Attack"
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    "D49g": {
        "eco": "D49g",
        "fen": "r1bqkb1r/5ppp/4pn2/1p2N3/3p4/3B1Q2/PP3PPP/R1B1K2R b KQkq - 1 13",
        "hash": "15319552536089683222",
        "name": "Semi-Slav: Meran, Sozin, Stahlberg Attack"
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    "D49h": {
        "eco": "D49h",
        "fen": "r1bqkb1r/5ppp/4pn2/1B2N3/3p4/8/PP3PPP/R1BQK2R b KQkq - 0 13",
        "hash": "16435985377716662037",
        "name": "Semi-Slav: Meran, Sozin, 13.Bxb5+"
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    "D49i": {
        "eco": "D49i",
        "fen": "r1bqkb1r/3n1ppp/4pn2/1p2P3/3p4/3B1N2/PP3PPP/R1BQK2R w KQkq - 0 12",
        "hash": "8729384967367064805",
        "name": "Semi-Slav: Meran, Old Main Line, 11.Nxb5 axb5"
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    "D49j": {
        "eco": "D49j",
        "fen": "r1b1kb1r/3n1ppp/1q2pP2/1p6/3p4/3B1N2/PP3PPP/R1BQK2R w KQkq - 1 13",
        "hash": "12267261441643706458",
        "name": "Semi-Slav: Meran, Old Main Line, Botvinnik Variation"
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    "D49k": {
        "eco": "D49k",
        "fen": "r1bqkb1r/3n1p1p/4pp2/1p6/3p4/3B1N2/PP3PPP/R1BQK2R w KQkq - 0 13",
        "hash": "6255271429269080227",
        "name": "Semi-Slav: Meran, Old Main Line, 11.Nxb5 axb5 12.exf6 gxf6"
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    "D50": {
        "eco": "D50",
        "fen": "rnbqkb1r/ppp2ppp/4pn2/3p2B1/2PP4/2N5/PP2PPPP/R2QKBNR b KQkq - 3 4",
        "hash": "11102373440004537386",
        "name": "QGD: 4.Bg5"
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    "D51": {
        "eco": "D51",
        "fen": "r1bqkb1r/pppn1ppp/4pn2/3p2B1/2PP4/2N5/PP2PPPP/R2QKBNR w KQkq - 4 5",
        "hash": "12245558485149503974",
        "name": "QGD: 4.Bg5 Nbd7"
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    "D52a": {
        "eco": "D52a",
        "fen": "r1bqkb1r/pp1n1ppp/2p1pn2/3p2B1/2PP4/2N1PN2/PP3PPP/R2QKB1R b KQkq - 1 6",
        "hash": "5603521530905652164",
        "name": "QGD: 4.Bg5 Nbd7 5.e3 c6 6.Nf3"
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    "D52b": {
        "eco": "D52b",
        "fen": "r1b1kb1r/pp1n1ppp/2p1pn2/q2p2B1/2PP4/2N1PN2/PP3PPP/R2QKB1R w KQkq - 2 7",
        "hash": "10714099245185518155",
        "name": "QGD: Cambridge Springs Defence"
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    "D52c": {
        "eco": "D52c",
        "fen": "r1b1kb1r/pp1n1ppp/2p1pB2/q2p4/2PP4/2N1PN2/PP3PPP/R2QKB1R b KQkq - 0 7",
        "hash": "3571118859891905707",
        "name": "QGD: Cambridge Springs, Capablanca Variation"
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    "D52d": {
        "eco": "D52d",
        "fen": "r1b1kb1r/pp1n1ppp/2p1pn2/q2P2B1/3P4/2N1PN2/PP3PPP/R2QKB1R b KQkq - 0 7",
        "hash": "11140423004911984214",
        "name": "QGD: Cambridge Springs, 7.cxd5"
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    "D52e": {
        "eco": "D52e",
        "fen": "r1b1kb1r/pp1n1ppp/2p1p3/q2n2B1/3P4/2N1PN2/PP3PPP/R2QKB1R w KQkq - 0 8",
        "hash": "393152370340217610",
        "name": "QGD: Cambridge Springs, Yugoslav Variation"
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    "D52f": {
        "eco": "D52f",
        "fen": "r1b1kb1r/pp1n1ppp/2p1p3/q2n2B1/3P4/2N1PN2/PP1Q1PPP/R3KB1R b KQkq - 1 8",
        "hash": "3273147643848727722",
        "name": "QGD: Cambridge Springs, Yugoslav, 8.Qd2"
    },
    "D52g": {
        "eco": "D52g",
        "fen": "r1b1kb1r/pp1n1ppp/2p1pn2/q2p2B1/2PP4/2N1P3/PP1N1PPP/R2QKB1R b KQkq - 3 7",
        "hash": "5301505975816910017",
        "name": "QGD: Cambridge Springs, 7.Nd2"
    },
    "D52h": {
        "eco": "D52h",
        "fen": "r1b1kb1r/pp1n1ppp/2p1pn2/q5B1/2pP4/2N1P3/PP1N1PPP/R2QKB1R w KQkq - 0 8",
        "hash": "11210729043333978658",
        "name": "QGD: Cambridge Springs, Rubinstein Variation"
    },
    "D52i": {
        "eco": "D52i",
        "fen": "r1b1k2r/pp1n1ppp/2p1pn2/q2p2B1/1bPP4/2N1P3/PP1N1PPP/R2QKB1R w KQkq - 4 8",
        "hash": "9282994836826930403",
        "name": "QGD: Cambridge Springs, Bogoljubow Variation"
    },
    "D52j": {
        "eco": "D52j",
        "fen": "r1b1k2r/pp1n1ppp/2p1pn2/q2p2B1/1bPP4/2N1P3/PPQN1PPP/R3KB1R b KQkq - 5 8",
        "hash": "3587856541783195783",
        "name": "QGD: Cambridge Springs, Bogoljubow, 8.Qc2"
    },
    "D52k": {
        "eco": "D52k",
        "fen": "r1b1k2r/pp1n1ppp/2p1pn2/q5B1/1bpP4/2N1P3/PPQN1PPP/R3KB1R w KQkq - 0 9",
        "hash": "16414663730101644900",
        "name": "QGD: Cambridge Springs, 8.Qc2 dxc4"
    },
    "D52l": {
        "eco": "D52l",
        "fen": "r1b2rk1/pp1n1ppp/2p1pn2/q2p2B1/1bPP4/2N1P3/PPQN1PPP/R3KB1R w KQ - 6 9",
        "hash": "4279067482281830764",
        "name": "QGD: Cambridge Springs, 8.Qc2 O-O"
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    "D52m": {
        "eco": "D52m",
        "fen": "r1b2rk1/pp1n1ppp/2p1pn2/q2p4/1bPP3B/2N1P3/PPQN1PPP/R3KB1R b KQ - 7 9",
        "hash": "7056337937451666423",
        "name": "QGD: Cambridge Springs, Argentine Variation"
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    "D52n": {
        "eco": "D52n",
        "fen": "r1b2rk1/pp1n1ppp/2p1pn2/q2p2B1/1bPP4/2N1P3/PPQNBPPP/R3K2R b KQ - 7 9",
        "hash": "5251987495908811727",
        "name": "QGD: Cambridge Springs, 8.Qc2 O-O 9.Be2"
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    "D52o": {
        "eco": "D52o",
        "fen": "r1b2rk1/pp1n1ppp/2p2n2/q2pp1B1/1bPP4/2N1P3/PPQNBPPP/R3K2R w KQ - 0 10",
        "hash": "5493004082086989474",
        "name": "QGD: Cambridge Springs, 8.Qc2 O-O 9.Be2 e5"
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    "D53a": {
        "eco": "D53a",
        "fen": "rnbqk2r/ppp1bppp/4pn2/3p2B1/2PP4/2N5/PP2PPPP/R2QKBNR w KQkq - 4 5",
        "hash": "10295226814722216123",
        "name": "QGD: 4.Bg5 Be7"
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    "D53b": {
        "eco": "D53b",
        "fen": "rnbqk2r/ppp1bppp/4p3/3n2B1/3P4/2N5/PP2PPPP/R2QKBNR w KQkq - 0 6",
        "hash": "2241420139523414522",
        "name": "QGD: 4.Bg5 Be7 5.cxd5 Nxd5"
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    "D53c": {
        "eco": "D53c",
        "fen": "rnbqk2r/ppp1bppp/4pn2/3p2B1/2PP4/2N2N2/PP2PPPP/R2QKB1R b KQkq - 5 5",
        "hash": "6177551980135608710",
        "name": "QGD: 4.Bg5 Be7 5.Nf3"
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    "D53d": {
        "eco": "D53d",
        "fen": "rnbqk2r/ppp1bpp1/4pn1p/3p2B1/2PP4/2N2N2/PP2PPPP/R2QKB1R w KQkq - 0 6",
        "hash": "14360951912057682067",
        "name": "QGD: 4.Bg5 Be7 5.Nf3 h6"
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    "D53e": {
        "eco": "D53e",
        "fen": "rnbqk2r/ppp1bpp1/4pB1p/3p4/2PP4/2N2N2/PP2PPPP/R2QKB1R b KQkq - 0 6",
        "hash": "7094102335599961715",
        "name": "QGD: 4.Bg5 Be7 5.Nf3 h6 6.Bxf6"
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    "D53f": {
        "eco": "D53f",
        "fen": "rnbqk2r/ppp2pp1/4pb1p/3p4/2PP4/2N2N2/PP2PPPP/R2QKB1R w KQkq - 0 7",
        "hash": "5324377405160314367",
        "name": "QGD: 4.Bg5 Be7 5.Nf3 h6 6.Bxf6 Bxf6"
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        "eco": "D53g",
        "fen": "rnbqk2r/ppp2pp1/4pb1p/3p4/2PP4/2N1PN2/PP3PPP/R2QKB1R b KQkq - 0 7",
        "hash": "16487326084605271387",
        "name": "QGD: 4.Bg5 Be7 5.Nf3 h6 6.Bxf6 Bxf6 7.e3"
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    "D53h": {
        "eco": "D53h",
        "fen": "rnbqk2r/ppp1bpp1/4pn1p/3p4/2PP3B/2N2N2/PP2PPPP/R2QKB1R b KQkq - 1 6",
        "hash": "11367984236571400712",
        "name": "QGD: 4.Bg5 Be7 5.Nf3 h6 6.Bh4"
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    "D53i": {
        "eco": "D53i",
        "fen": "rnbq1rk1/ppp1bpp1/4pn1p/3p4/2PP3B/2N2N2/PP2PPPP/R2QKB1R w KQ - 2 7",
        "hash": "10911057347007607779",
        "name": "QGD: 4.Bg5 Be7 5.Nf3 h6 6.Bh4 O-O"
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        "eco": "D53j",
        "fen": "rnbq1rk1/ppp1bpp1/4pn1p/3p4/2PP3B/2N2N2/PPQ1PPPP/R3KB1R b KQ - 3 7",
        "hash": "2770468878136627079",
        "name": "QGD: 4.Bg5 Be7 5.Nf3 h6 6.Bh4 O-O 7.Qc2"
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    "D53k": {
        "eco": "D53k",
        "fen": "rnbq1rk1/ppp1bpp1/4pn1p/3p4/2PP3B/2N2N2/PP2PPPP/2RQKB1R b K - 3 7",
        "hash": "16784937339991336765",
        "name": "QGD: 4.Bg5 Be7 5.Nf3 h6 6.Bh4 O-O 7.Rc1"
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    "D53l": {
        "eco": "D53l",
        "fen": "rnbq1rk1/ppp1bppp/4pn2/3p2B1/2PP4/2N2N2/PP2PPPP/R2QKB1R w KQ - 6 6",
        "hash": "6851100367949109357",
        "name": "QGD: 4.Bg5 Be7 5.Nf3 O-O"
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    "D53m": {
        "eco": "D53m",
        "fen": "rnbq1rk1/ppp1bppp/4pn2/3p2B1/2PP4/2N2N2/PPQ1PPPP/R3KB1R b KQ - 7 6",
        "hash": "17152677580607955977",
        "name": "QGD: 4.Bg5 Be7 5.Nf3 O-O 6.Qc2"
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    "D53n": {
        "eco": "D53n",
        "fen": "r1bq1rk1/pppnbppp/4pn2/3p2B1/2PP4/2N2N2/PPQ1PPPP/R3KB1R w KQ - 8 7",
        "hash": "15990582692103670213",
        "name": "QGD: 4.Bg5 Be7 5.Nf3 O-O 6.Qc2 Nbd7"
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    "D53o": {
        "eco": "D53o",
        "fen": "rnbq1rk1/pp2bppp/4pn2/2pp2B1/2PP4/2N2N2/PPQ1PPPP/R3KB1R w KQ c6 0 7",
        "hash": "611184220810162036",
        "name": "QGD: 4.Bg5 Be7 5.Nf3 O-O 6.Qc2 c5"
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    "D53p": {
        "eco": "D53p",
        "fen": "rnbqk2r/ppp1bppp/4pn2/3p2B1/2PP4/2N1P3/PP3PPP/R2QKBNR b KQkq - 0 5",
        "hash": "2590340062114191391",
        "name": "QGD: 4.Bg5 Be7 5.e3"
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    "D53q": {
        "eco": "D53q",
        "fen": "rnbqk2r/ppp1bppp/4p3/3p2B1/2PPn3/2N1P3/PP3PPP/R2QKBNR w KQkq - 1 6",
        "hash": "1872072547769390565",
        "name": "QGD: Early Lasker Variation"
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    "D53r": {
        "eco": "D53r",
        "fen": "r1bqk2r/pppnbppp/4pn2/3p2B1/2PP4/2N1P3/PP3PPP/R2QKBNR w KQkq - 1 6",
        "hash": "1157926284260505043",
        "name": "QGD: 4.Bg5 Be7 5.e3 Nbd7"
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    "D53s": {
        "eco": "D53s",
        "fen": "r1bqk2r/pppnbppp/4pn2/3p2B1/2PP4/2N1PN2/PP3PPP/R2QKB1R b KQkq - 2 6",
        "hash": "14660671597632361710",
        "name": "QGD: 4.Bg5 Be7 5.e3 Nbd7 6.Nf3"
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    "D53t": {
        "eco": "D53t",
        "fen": "rnbqk2r/ppp1bpp1/4pn1p/3p2B1/2PP4/2N1P3/PP3PPP/R2QKBNR w KQkq - 0 6",
        "hash": "12755874101408813322",
        "name": "QGD: 4.Bg5 Be7 5.e3 h6"
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    "D53u": {
        "eco": "D53u",
        "fen": "rnbq1rk1/ppp1bppp/4pn2/3p2B1/2PP4/2N1P3/PP3PPP/R2QKBNR w KQ - 1 6",
        "hash": "2979783405033386484",
        "name": "QGD: 4.Bg5 Be7 5.e3 O-O"
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    "D53v": {
        "eco": "D53v",
        "fen": "rnbq1rk1/ppp1bppp/4pn2/3p2B1/2PP4/2N1P3/PPQ2PPP/R3KBNR b KQ - 2 6",
        "hash": "10971651759936130448",
        "name": "QGD: 4.Bg5 Be7 5.e3 O-O 6.Qc2"
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    "D54a": {
        "eco": "D54a",
        "fen": "rnbq1rk1/ppp1bppp/4pn2/3p2B1/2PP4/2N1P3/PP3PPP/2RQKBNR b K - 2 6",
        "hash": "6251451985926300970",
        "name": "QGD: Anti-Neo-Orthodox Variation"
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    "D54b": {
        "eco": "D54b",
        "fen": "rnbq1rk1/ppp1bpp1/4pn1p/3p4/2PP3B/2N1P3/PP3PPP/2RQKBNR b K - 1 7",
        "hash": "11437381433021583012",
        "name": "QGD: Anti-Neo-Orthodox Variation"
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        "eco": "D54c",
        "fen": "rnbq1rk1/p1p1bpp1/1p2pn1p/3p4/2PP3B/2N1P3/PP3PPP/2RQKBNR w K - 0 8",
        "hash": "17712926440949152063",
        "name": "QGD: Anti-Neo-Orthodox, 7.Bh4 b6"
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    "D54d": {
        "eco": "D54d",
        "fen": "rnb2rk1/p1p1qpp1/1p5p/3p4/3P4/4P3/PP3PPP/2RQKBNR w K - 0 11",
        "hash": "4855367799636994435",
        "name": "QGD: Anti-Neo-Orthodox, Main Line"
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    "D54e": {
        "eco": "D54e",
        "fen": "rnb2rk1/p1p1qpp1/1p5p/3p4/3P4/4P3/PP2BPPP/2RQK1NR b K - 1 11",
        "hash": "3522158716275057440",
        "name": "QGD: Anti-Neo-Orthodox, Main Line, 11.Be2"
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    "D55a": {
        "eco": "D55a",
        "fen": "rnbq1rk1/ppp1bppp/4pn2/3p2B1/2PP4/2N1PN2/PP3PPP/R2QKB1R b KQ - 2 6",
        "hash": "17455597899478470857",
        "name": "QGD: 6.Nf3"
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    "D55b": {
        "eco": "D55b",
        "fen": "rnbq1rk1/ppp1bppp/4p3/3p2B1/2PPn3/2N1PN2/PP3PPP/R2QKB1R w KQ - 3 7",
        "hash": "14426983790787271987",
        "name": "QGD: Lasker without ...h6"
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    "D55c": {
        "eco": "D55c",
        "fen": "rnbq1rk1/p1p1bppp/1p2pn2/3p2B1/2PP4/2N1PN2/PP3PPP/R2QKB1R w KQ - 0 7",
        "hash": "11049569448099555154",
        "name": "QGD: 6.Nf3 b6"
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    "D55d": {
        "eco": "D55d",
        "fen": "rnbq1rk1/p1p1bppp/1p2pn2/3p2B1/2PP4/2N1PN2/PP2BPPP/R2QK2R b KQ - 1 7",
        "hash": "16922125137273089521",
        "name": "QGD: 6.Nf3 b6 7.Be2"
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    "D55e": {
        "eco": "D55e",
        "fen": "rnbq1rk1/p1p1bppp/1p3n2/3p2B1/3P4/2N1PN2/PP3PPP/R2QKB1R w KQ - 0 8",
        "hash": "12135431705637974916",
        "name": "QGD: 6.Nf3 b6 7.cxd5 exd5"
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    "D55f": {
        "eco": "D55f",
        "fen": "rnbq1rk1/p1p1bppp/1p2p3/3n2B1/3P4/2N1PN2/PP3PPP/R2QKB1R w KQ - 0 8",
        "hash": "617861070300687891",
        "name": "QGD: 6.Nf3 b6 7.cxd5 Nxd5"
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    "D55g": {
        "eco": "D55g",
        "fen": "rnbq1rk1/ppp1bpp1/4pn1p/3p2B1/2PP4/2N1PN2/PP3PPP/R2QKB1R w KQ - 0 7",
        "hash": "6974376703060367836",
        "name": "QGD: Neo-Orthodox Variation"
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    "D55h": {
        "eco": "D55h",
        "fen": "rnbq1rk1/ppp1bpp1/4pB1p/3p4/2PP4/2N1PN2/PP3PPP/R2QKB1R b KQ - 0 7",
        "hash": "14264869764910417724",
        "name": "QGD: Neo-Orthodox, 7.Bxf6"
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    "D55i": {
        "eco": "D55i",
        "fen": "rnbq1rk1/ppp2pp1/4pb1p/3p4/2PP4/1QN1PN2/PP3PPP/R3KB1R b KQ - 1 8",
        "hash": "15321230227910138966",
        "name": "QGD: Neo-Orthodox, 7.Bxf6 Bxf6 8.Qb3"
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    "D55j": {
        "eco": "D55j",
        "fen": "rnbq1rk1/ppp2pp1/4pb1p/3p4/2PP4/2N1PN2/PP3PPP/2RQKB1R b K - 1 8",
        "hash": "10519737212451840110",
        "name": "QGD: Neo-Orthodox, Gligoric Variation"
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    "D55k": {
        "eco": "D55k",
        "fen": "r1bq1rk1/pp1n1pp1/2p1pb1p/8/2BP4/2N1PN2/PP3PPP/2RQ1RK1 b - - 0 11",
        "hash": "8198074937273560002",
        "name": "QGD: Neo-Orthodox, Petrosian Variation"
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    "D56": {
        "eco": "D56",
        "fen": "rnbq1rk1/ppp1bpp1/4pn1p/3p4/2PP3B/2N1PN2/PP3PPP/R2QKB1R b KQ - 1 7",
        "hash": "4199217885640555335",
        "name": "QGD: Neo-Orthodox, 7.Bh4"
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    "D57": {
        "eco": "D57",
        "fen": "rnb2rk1/ppp1qpp1/4p2p/3P4/3Pn3/2N1PN2/PP3PPP/R2QKB1R b KQ - 0 9",
        "hash": "16120744284041714123",
        "name": "QGD: Lasker Defence, Main Line"
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    "D58a": {
        "eco": "D58a",
        "fen": "rnbq1rk1/p1p1bpp1/1p2pn1p/3p4/2PP3B/2N1PN2/PP3PPP/R2QKB1R w KQ - 0 8",
        "hash": "5850131367858392284",
        "name": "QGD: Tartakower System"
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    "D58b": {
        "eco": "D58b",
        "fen": "rnbq1rk1/p1p1bpp1/1p2pn1p/3p4/2PP3B/1QN1PN2/PP3PPP/R3KB1R b KQ - 1 8",
        "hash": "7770526591761409082",
        "name": "QGD: Tartakower, 8.Qb3"
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    "D58c": {
        "eco": "D58c",
        "fen": "rnbq1rk1/p1p1bpp1/1p2pn1p/3p4/2PP3B/2N1PN2/PPQ2PPP/R3KB1R b KQ - 1 8",
        "hash": "16156282574036529336",
        "name": "QGD: Tartakower, 8.Qc2"
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    "D58d": {
        "eco": "D58d",
        "fen": "rnbq1rk1/p1p1bpp1/1p2pB1p/3p4/2PP4/2N1PN2/PP3PPP/R2QKB1R b KQ - 0 8",
        "hash": "6217659929115112878",
        "name": "QGD: Tartakower, 8.Bxf6"
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    "D58e": {
        "eco": "D58e",
        "fen": "rnbq1rk1/p1p1bpp1/1p2pn1p/3p4/2PP3B/2NBPN2/PP3PPP/R2QK2R b KQ - 1 8",
        "hash": "297931203750727343",
        "name": "QGD: Tartakower, 8.Bd3"
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    "D58f": {
        "eco": "D58f",
        "fen": "rn1q1rk1/pbp1bpp1/1p2pn1p/3p4/2PP3B/2NBPN2/PP3PPP/R2QK2R w KQ - 2 9",
        "hash": "13020538044472860980",
        "name": "QGD: Tartakower, 8.Bd3 Bb7"
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    "D58g": {
        "eco": "D58g",
        "fen": "rn1q1rk1/pbp1bpp1/1p2pn1p/3p4/2PP3B/2NBPN2/PP3PPP/R2Q1RK1 b - - 3 9",
        "hash": "14611723837087185444",
        "name": "QGD: Tartakower, 8.Bd3 Bb7 9.O-O"
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    "D58h": {
        "eco": "D58h",
        "fen": "r2q1rk1/pbpnbpp1/1p2pn1p/3p4/2PP3B/2NBPN2/PP3PPP/R2Q1RK1 w - - 4 10",
        "hash": "17952542407683250152",
        "name": "QGD: Tartakower, 8.Bd3 Bb7 9.O-O Nbd7"
    },
    "D58i": {
        "eco": "D58i",
        "fen": "r2q1rk1/pbpnbpp1/1p2pn1p/3p4/2PP3B/2NBPN2/PP2QPPP/R4RK1 b - - 5 10",
        "hash": "8008157796797041772",
        "name": "QGD: Tartakower, 8.Bd3 Bb7 9.O-O Nbd7 10.Qe2"
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    "D58j": {
        "eco": "D58j",
        "fen": "r2q1rk1/pb1nbpp1/1p2pn1p/2pp4/2PP3B/2NBPN2/PP2QPPP/R4RK1 w - c6 0 11",
        "hash": "9895359152607971089",
        "name": "QGD: Tartakower, 8.Bd3 Bb7 9.O-O Nbd7 10.Qe2 c5"
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    "D58k": {
        "eco": "D58k",
        "fen": "rnbq1rk1/p1p1bpp1/1p2pn1p/3p4/2PP3B/2N1PN2/PP2BPPP/R2QK2R b KQ - 1 8",
        "hash": "2499309239155328639",
        "name": "QGD: Tartakower, 8.Be2"
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    "D58l": {
        "eco": "D58l",
        "fen": "rn1q1rk1/pbp2pp1/1p2pb1p/3P4/3P4/2N1PN2/PP2BPPP/R2QK2R b KQ - 0 10",
        "hash": "12746151239665448711",
        "name": "QGD: Tartakower, 8.Be2 Bb7 9.Bxf6 Bxf6 10.cxd5"
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    "D58m": {
        "eco": "D58m",
        "fen": "rn1q1rk1/pbp2pp1/1p3b1p/3p4/3P4/2N1PN2/PP2BPPP/R2Q1RK1 b - - 1 11",
        "hash": "17402700562830453980",
        "name": "QGD: Tartakower, 8.Be2 Bb7 9.Bxf6 Bxf6 10.cxd5 exd5 11.O-O"
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    "D58n": {
        "eco": "D58n",
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        "hash": "2666906605428825064",
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        "hash": "8288396069743961359",
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        "hash": "15313333065893495872",
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        "hash": "3832183348399703749",
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        "hash": "12057345239728838014",
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        "hash": "10293277293239975546",
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        "hash": "17919509661284511272",
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        "hash": "12511917557999725659",
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        "hash": "4853002718121989783",
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        "hash": "16656738326735677478",
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        "hash": "12152106801930897812",
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        "hash": "10568551354753509258",
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        "hash": "11610082673200119466",
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        "hash": "14588854353621223729",
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        "hash": "3703543577092189457",
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        "hash": "8352133721626920566",
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        "hash": "29342285817122005",
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        "hash": "14457627858389319901",
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        "hash": "15791632414345705283",
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        "hash": "5790668087060225086",
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        "hash": "11033252802844267548",
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        "hash": "4940701808550080687",
        "name": "Catalan: 4.Nf3 Be7"
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        "hash": "9393009929428972253",
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        "hash": "5836121462115287206",
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        "hash": "7141982032506301802",
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        "hash": "4497651300911151586",
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        "hash": "14612254154063031697",
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        "name": "Catalan: Open, 5.Nf3"
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        "hash": "18369029186083791494",
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        "hash": "309047305683699560",
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        "hash": "6318239851478308761",
        "name": "Catalan: Open, 5.Nf3 b5"
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        "hash": "16527505077193773688",
        "name": "Catalan: Open, 5.Nf3 a6"
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        "hash": "11180192093830793576",
        "name": "Catalan: Open, 5.Nf3 a6 6.O-O"
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        "hash": "18098963516349740117",
        "name": "Catalan: Open, 5.Nf3 a6 6.O-O b5"
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        "hash": "9929612226838868312",
        "name": "Catalan: Open, 5.Nf3 a6 6.O-O b5 7.Ne5 Nd5 8.a4"
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        "hash": "3514458743917767787",
        "name": "Catalan: Open, 5.Nf3 a6 6.O-O Nc6"
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        "hash": "11378519458414093519",
        "name": "Catalan: Open, 5.Nf3 a6 6.O-O Nc6 7.e3"
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        "hash": "15121783596739617241",
        "name": "Catalan: Open, 5.Nf3 c5"
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        "hash": "307368228191739850",
        "name": "Catalan: Open, 5.Nf3 c5 6.O-O Nc6"
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        "hash": "15671156751272606396",
        "name": "Catalan: Open, 5.Nf3 c5 6.O-O Nc6 7.Ne5"
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        "hash": "4349364568701109571",
        "name": "Catalan: Open, 5.Nf3 c5 6.O-O Nc6 7.Ne5 Bd7 8.Na3"
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        "eco": "E09o",
        "fen": "2rq1rk1/pb1nbppp/1pp1pn2/3p4/2PPP3/1P3NP1/PBQN1PBP/R4RK1 b - - 2 11",
        "hash": "9885762779645106941",
        "name": "Catalan: Closed, Main Line, 9.e4 Bb7 10.b3 Rc8 11.Bb2"
    },
    "E09p": {
        "eco": "E09p",
        "fen": "2r2rk1/pbqnbppp/1pp1pn2/3p4/2PPP3/1P3NP1/PBQN1PBP/R4RK1 w - - 3 12",
        "hash": "10317315735915664892",
        "name": "Catalan: Closed, Main Line, 9.e4 Bb7 10.b3 Rc8 11.Bb2 Qc7"
    },
    "E09q": {
        "eco": "E09q",
        "fen": "2rq1rk1/pb1nbppp/1p2pn2/2pp4/2PPP3/1P3NP1/PBQN1PBP/R4RK1 w - - 0 12",
        "hash": "426806455923246898",
        "name": "Catalan: Closed, Main Line, 9.e4 Bb7 10.b3 Rc8 11.Bb2 c5"
    },
    "E10a": {
        "eco": "E10a",
        "fen": "rnbqkb1r/pppp1ppp/4pn2/8/2PP4/5N2/PP2PPPP/RNBQKB1R b KQkq - 1 3",
        "hash": "18000901611687889440",
        "name": "Neo-Indian: 3.Nf3"
    },
    "E10b": {
        "eco": "E10b",
        "fen": "rnbqkb1r/pppp1ppp/4p3/8/2PPn3/5N2/PP2PPPP/RNBQKB1R w KQkq - 2 4",
        "hash": "14112100055236233178",
        "name": "Neo-Indian: Doery Defence"
    },
    "E10c": {
        "eco": "E10c",
        "fen": "rnbqk2r/ppppbppp/4pn2/8/2PP4/5N2/PP2PPPP/RNBQKB1R w KQkq - 2 4",
        "hash": "17085671047841343153",
        "name": "Neo-Indian: 3.Nf3 Be7"
    },
    "E10d": {
        "eco": "E10d",
        "fen": "rnbqkb1r/1ppp1ppp/p3pn2/8/2PP4/5N2/PP2PPPP/RNBQKB1R w KQkq - 0 4",
        "hash": "3109732619945325308",
        "name": "Neo-Indian: 3.Nf3 a6"
    },
    "E10e": {
        "eco": "E10e",
        "fen": "rnbqkb1r/1ppp1ppp/p3pn2/8/2PP4/2N2N2/PP2PPPP/R1BQKB1R b KQkq - 1 4",
        "hash": "15037771999385202725",
        "name": "Neo-Indian: 3.Nf3 a6 4.Nc3"
    },
    "E10f": {
        "eco": "E10f",
        "fen": "rnbqkb1r/1p1p1ppp/p3pn2/2p5/2PP4/2N2N2/PP2PPPP/R1BQKB1R w KQkq c6 0 5",
        "hash": "3945492315139521368",
        "name": "Neo-Indian: 3.Nf3 a6 4.Nc3 c5"
    },
    "E10g": {
        "eco": "E10g",
        "fen": "rnbqkb1r/pp1p1ppp/4pn2/2p5/2PP4/5N2/PP2PPPP/RNBQKB1R w KQkq c6 0 4",
        "hash": "2279345923159933277",
        "name": "Neo-Indian: Blumenfeld/Benoni"
    },
    "E10h": {
        "eco": "E10h",
        "fen": "rnbqkb1r/pp1p1ppp/4pn2/2p5/2PP4/4PN2/PP3PPP/RNBQKB1R b KQkq - 0 4",
        "hash": "12865833849228184057",
        "name": "Neo-Indian: Blumenfeld/Benoni, 4.e3"
    },
    "E10i": {
        "eco": "E10i",
        "fen": "rnbqkb1r/p2p1ppp/1p2pn2/2p5/2PP4/4PN2/PP3PPP/RNBQKB1R w KQkq - 0 5",
        "hash": "15701191696109993570",
        "name": "Neo-Indian: Blumenfeld/Benoni, 4.e3 b6"
    },
    "E10j": {
        "eco": "E10j",
        "fen": "rnbqkb1r/pp1p1ppp/4pn2/8/2Pp4/4PN2/PP3PPP/RNBQKB1R w KQkq - 0 5",
        "hash": "17118786422174982207",
        "name": "Neo-Indian: Blumenfeld/Benoni, 4.e3 cxd4"
    },
    "E10k": {
        "eco": "E10k",
        "fen": "rnbqkb1r/p2p1ppp/4pn2/1ppP4/2P5/5N2/PP2PPPP/RNBQKB1R w KQkq b6 0 5",
        "hash": "14244309805386033725",
        "name": "Blumenfeld Countergambit"
    },
    "E10l": {
        "eco": "E10l",
        "fen": "rnbqkb1r/p5pp/4pn2/1Ppp4/8/5N2/PP2PPPP/RNBQKB1R w KQkq d6 0 7",
        "hash": "10347470135956252646",
        "name": "Blumenfeld: 5.dxe6 fxe6 6.cxb5 d5"
    },
    "E10m": {
        "eco": "E10m",
        "fen": "rnbqkb1r/p2p1ppp/4pn2/1ppP2B1/2P5/5N2/PP2PPPP/RN1QKB1R b KQkq - 1 5",
        "hash": "285876849302516213",
        "name": "Blumenfeld: 5.Bg5"
    },
    "E10n": {
        "eco": "E10n",
        "fen": "rnbqkb1r/p2p1pp1/4pn1p/1ppP2B1/2P5/5N2/PP2PPPP/RN1QKB1R w KQkq - 0 6",
        "hash": "10448606343596832992",
        "name": "Blumenfeld: 5.Bg5 h6"
    },
    "E10o": {
        "eco": "E10o",
        "fen": "rnb1kb1r/p2p1ppp/4pn2/qppP2B1/2P5/5N2/PP2PPPP/RN1QKB1R w KQkq - 2 6",
        "hash": "15745769714659168378",
        "name": "Blumenfeld: 5.Bg5 Qa5+"
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    "E10p": {
        "eco": "E10p",
        "fen": "rnbqkb1r/p2p1ppp/5n2/1ppp2B1/2P5/5N2/PP2PPPP/RN1QKB1R w KQkq - 0 6",
        "hash": "4387485421916582206",
        "name": "Blumenfeld: 5.Bg5 exd5"
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    "E10q": {
        "eco": "E10q",
        "fen": "rnbqkb1r/p2p1pp1/5n1p/1ppP2B1/8/5N2/PP2PPPP/RN1QKB1R w KQkq - 0 7",
        "hash": "11546853506016128054",
        "name": "Blumenfeld: Spielmann Variation"
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    "E11a": {
        "eco": "E11a",
        "fen": "rnbqk2r/pppp1ppp/4pn2/8/1bPP4/5N2/PP2PPPP/RNBQKB1R w KQkq - 2 4",
        "hash": "3499690135436263938",
        "name": "Bogo-Indian"
    },
    "E11b": {
        "eco": "E11b",
        "fen": "rnbqk2r/ppp2ppp/4pn2/3p4/1bPP4/5N2/PP1NPPPP/R1BQKB1R w KQkq d6 0 5",
        "hash": "17047813254047851540",
        "name": "Bogo-Indian: 4.Nbd2 d5"
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    "E11c": {
        "eco": "E11c",
        "fen": "rnbqk2r/p1pp1ppp/1p2pn2/8/1bPP4/5N2/PP1NPPPP/R1BQKB1R w KQkq - 0 5",
        "hash": "186500058724703657",
        "name": "Bogo-Indian: 4.Nbd2 b6"
    },
    "E11d": {
        "eco": "E11d",
        "fen": "rnbqk2r/p1pp1ppp/1p2pn2/8/2PP4/P4N2/1P1BPPPP/R2QKB1R b KQkq - 0 6",
        "hash": "8480887617440682913",
        "name": "Bogo-Indian: 4.Nbd2 b6 5.a3 Bxd2+ 6.Bxd2"
    },
    "E11e": {
        "eco": "E11e",
        "fen": "rnbq1rk1/pppp1ppp/4pn2/8/1bPP4/5N2/PP1NPPPP/R1BQKB1R w KQ - 4 5",
        "hash": "7158243423025775577",
        "name": "Bogo-Indian: 4.Nbd2 O-O"
    },
    "E11f": {
        "eco": "E11f",
        "fen": "rnbq1rk1/pppp1ppp/4pn2/8/1bPP4/P4N2/1P1NPPPP/R1BQKB1R b KQ - 0 5",
        "hash": "12162816669612690841",
        "name": "Bogo-Indian: 4.Nbd2 O-O 5.a3"
    },
    "E11g": {
        "eco": "E11g",
        "fen": "rnbqk2r/pppp1ppp/4pn2/8/1bPP4/5N2/PP1BPPPP/RN1QKB1R b KQkq - 3 4",
        "hash": "1809390519403374854",
        "name": "Bogo-Indian: 4.Bd2"
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    "E11h": {
        "eco": "E11h",
        "fen": "rnbq1rk1/ppp1bppp/4pn2/3p4/2PP4/5NP1/PP1BPPBP/RN1QK2R w KQ - 2 7",
        "hash": "3067889004343144240",
        "name": "Bogo-Indian: 4.Bd2 Be7 5.g3 d5 6.Bg2 O-O"
    },
    "E11i": {
        "eco": "E11i",
        "fen": "rnbq1rk1/pp2bppp/2p1pn2/3p4/2PP4/5NP1/PPQBPPBP/RN3RK1 b - - 1 8",
        "hash": "8612483434777287679",
        "name": "Bogo-Indian: 4.Bd2 Be7 5.g3 d5 6.Bg2 O-O 7.O-O c6 8.Qc2"
    },
    "E11j": {
        "eco": "E11j",
        "fen": "rnbqk2r/pp1p1ppp/4pn2/2p5/1bPP4/5N2/PP1BPPPP/RN1QKB1R w KQkq c6 0 5",
        "hash": "18405629733685977723",
        "name": "Bogo-Indian: Vitolins Variation"
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    "E11k": {
        "eco": "E11k",
        "fen": "rnbqk2r/pp1p1ppp/4pn2/8/1pPP4/5NP1/PP2PP1P/RN1QKB1R b KQkq - 0 6",
        "hash": "15842498810850537534",
        "name": "Bogo-Indian: Vitolins, 6.g3"
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    "E11l": {
        "eco": "E11l",
        "fen": "rnbqk2r/1ppp1ppp/4pn2/p7/1bPP4/5N2/PP1BPPPP/RN1QKB1R w KQkq a6 0 5",
        "hash": "11458998954212156822",
        "name": "Bogo-Indian: 4.Bd2 a5"
    },
    "E11m": {
        "eco": "E11m",
        "fen": "rnbqk2r/1ppp1ppp/4pn2/p7/1bPP4/5NP1/PP1BPP1P/RN1QKB1R b KQkq - 0 5",
        "hash": "12961414255465512366",
        "name": "Bogo-Indian: 4.Bd2 a5 5.g3"
    },
    "E11n": {
        "eco": "E11n",
        "fen": "rnb1k2r/ppppqppp/4pn2/8/1bPP4/5N2/PP1BPPPP/RN1QKB1R w KQkq - 4 5",
        "hash": "9431628779807295340",
        "name": "Bogo-Indian: Nimzowitsch Variation"
    },
    "E11o": {
        "eco": "E11o",
        "fen": "rnb1k2r/ppppqppp/4pn2/8/1bPP4/2N2N2/PP1BPPPP/R2QKB1R b KQkq - 5 5",
        "hash": "8751893502006216117",
        "name": "Bogo-Indian: Nimzowitsch, 5.Nc3"
    },
    "E11p": {
        "eco": "E11p",
        "fen": "rnb1k2r/ppppqppp/4pn2/8/1bPP4/5NP1/PP1BPP1P/RN1QKB1R b KQkq - 0 5",
        "hash": "12539528957878607700",
        "name": "Bogo-Indian: Nimzowitsch, 5.g3"
    },
    "E11q": {
        "eco": "E11q",
        "fen": "rnb2rk1/ppppqppp/4pn2/8/1bPP4/5NP1/PP1BPP1P/RN1QKB1R w KQ - 1 6",
        "hash": "11866341330102646463",
        "name": "Bogo-Indian: Nimzowitsch, 5.g3 O-O"
    },
    "E11r": {
        "eco": "E11r",
        "fen": "r1b1k2r/ppppqppp/2n1pn2/8/1bPP4/5NP1/PP1BPP1P/RN1QKB1R w KQkq - 1 6",
        "hash": "425735044511152727",
        "name": "Bogo-Indian: Nimzowitsch, 5.g3 Nc6"
    },
    "E11s": {
        "eco": "E11s",
        "fen": "r1b1k2r/ppppqppp/2n1pn2/8/2PP4/2b2NP1/PP1BPP1P/R2QKB1R w KQkq - 0 7",
        "hash": "16088793424699812484",
        "name": "Bogo-Indian: Nimzowitsch, 5.g3 Nc6 6.Nc3 Bxc3"
    },
    "E11t": {
        "eco": "E11t",
        "fen": "r1b1k2r/ppppqppp/2n1pn2/8/1bPP4/5NP1/PP1BPPBP/RN1QK2R b KQkq - 2 6",
        "hash": "12689068667576017454",
        "name": "Bogo-Indian: Nimzowitsch, 5.g3 Nc6 6.Bg2"
    },
    "E11u": {
        "eco": "E11u",
        "fen": "r1b1k2r/ppppqppp/2n1pn2/8/2PP4/5NP1/PP1NPPBP/R2QK2R b KQkq - 0 7",
        "hash": "3699342135282494706",
        "name": "Bogo-Indian: Nimzowitsch, 5.g3 Nc6 6.Bg2 Bxd2+ 7.Nbxd2"
    },
    "E11v": {
        "eco": "E11v",
        "fen": "r1b1k2r/ppp1qppp/2nppn2/8/2PP4/5NP1/PP1NPPBP/R2Q1RK1 b kq - 1 8",
        "hash": "8401844744982789775",
        "name": "Bogo-Indian: Nimzowitsch, 5.g3 Nc6 Main Line"
    },
    "E11w": {
        "eco": "E11w",
        "fen": "r1b1k2r/1pp1qppp/2nppn2/p7/2PP4/5NP1/PP1NPPBP/R2Q1RK1 w kq a6 0 9",
        "hash": "17475071042504520223",
        "name": "Bogo-Indian: Nimzowitsch, 5.g3 Nc6 Main Line, 8...a5"
    },
    "E11x": {
        "eco": "E11x",
        "fen": "rnbqk2r/pppp1ppp/4pn2/8/2PP4/5N2/PP1bPPPP/RN1QKB1R w KQkq - 0 5",
        "hash": "1705052873394744495",
        "name": "Bogo-Indian: 4.Bd2 Bxd2+"
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    "E11y": {
        "eco": "E11y",
        "fen": "rnbqk2r/pppp1ppp/4pn2/8/2PP4/5N2/PP1QPPPP/RN2KB1R b KQkq - 0 5",
        "hash": "16943909939917000778",
        "name": "Bogo-Indian: 4.Bd2 Bxd2+ 5.Qxd2"
    },
    "E11z": {
        "eco": "E11z",
        "fen": "rnbq1rk1/ppp2ppp/4pn2/3p4/2PP4/2N1PN2/PP1Q1PPP/R3KB1R b KQ - 0 7",
        "hash": "3628856639022841338",
        "name": "Bogo-Indian: 4.Bd2 Bxd2+ 5.Qxd2 O-O 6.Nc3 d5 7.e3"
    },
    "E12a": {
        "eco": "E12a",
        "fen": "rnbqkb1r/p1pp1ppp/1p2pn2/8/2PP4/5N2/PP2PPPP/RNBQKB1R w KQkq - 0 4",
        "hash": "10572558241368800699",
        "name": "Queen's Indian"
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    "E12b": {
        "eco": "E12b",
        "fen": "rnbqkb1r/p1pp1ppp/1p2pn2/8/2PP1B2/5N2/PP2PPPP/RN1QKB1R b KQkq - 1 4",
        "hash": "5327093386548254680",
        "name": "Queen's Indian: Miles Variation"
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    "E12c": {
        "eco": "E12c",
        "fen": "rn1qk2r/pbpp1ppp/1p2pn2/8/1bPP1B2/4PN2/PP3PPP/RN1QKB1R w KQkq - 1 6",
        "hash": "11318038470081935557",
        "name": "Queen's Indian: Miles, 5.e3 Bb4+"
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    "E12d": {
        "eco": "E12d",
        "fen": "rnbqkb1r/p1pp1ppp/1p2pn2/8/2PP4/P4N2/1P2PPPP/RNBQKB1R b KQkq - 0 4",
        "hash": "6423668614710621179",
        "name": "Queen's Indian: Petrosian"
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    "E12e": {
        "eco": "E12e",
        "fen": "rnbqkb1r/p2p1ppp/1p2pn2/2p5/2PP4/P4N2/1P2PPPP/RNBQKB1R w KQkq c6 0 5",
        "hash": "13786826039925799046",
        "name": "Queen's Indian: Petrosian, 4...c5"
    },
    "E12f": {
        "eco": "E12f",
        "fen": "rn1qkb1r/p2p1ppp/bp2pn2/2pP4/2P5/P4N2/1PQ1PPPP/RNB1KB1R b KQkq - 2 6",
        "hash": "8887227787521314881",
        "name": "Queen's Indian: Petrosian, 4...c5 5.d5 Ba6 6.Qc2"
    },
    "E12g": {
        "eco": "E12g",
        "fen": "rn1qkb1r/p1pp1ppp/bp2pn2/8/2PP4/P4N2/1P2PPPP/RNBQKB1R w KQkq - 1 5",
        "hash": "10823599569406259461",
        "name": "Queen's Indian: Petrosian, 4...Ba6"
    },
    "E12h": {
        "eco": "E12h",
        "fen": "rn1qkb1r/pbpp1ppp/1p2pn2/8/2PP4/P4N2/1PQ1PPPP/RNB1KB1R w KQkq - 3 6",
        "hash": "11563670037701453069",
        "name": "Queen's Indian: Petrosian, 4...Ba6 5.Qc2 Bb7"
    },
    "E12i": {
        "eco": "E12i",
        "fen": "rn1qkb1r/pb1p1ppp/1p2pn2/2p5/2PPP3/P1N2N2/1PQ2PPP/R1B1KB1R b KQkq e3 0 7",
        "hash": "8762787600451817891",
        "name": "Queen's Indian: Petrosian, 4...Ba6 5.Qc2 Bb7 6.Nc3 c5 7.e4"
    },
    "E12j": {
        "eco": "E12j",
        "fen": "rn1qkb1r/pbpp1ppp/1p2pn2/8/2PP4/P4N2/1P2PPPP/RNBQKB1R w KQkq - 1 5",
        "hash": "16840432448368303200",
        "name": "Queen's Indian: Petrosian, 4...Bb7"
    },
    "E12k": {
        "eco": "E12k",
        "fen": "rn1qkb1r/pbpp1ppp/1p2p3/8/2PPn3/P1N2N2/1P2PPPP/R1BQKB1R w KQkq - 3 6",
        "hash": "2894240245176292163",
        "name": "Queen's Indian: Petrosian, 5.Nc3 Ne4"
    },
    "E12l": {
        "eco": "E12l",
        "fen": "rn1qkb1r/pbpp1p1p/1p2pnp1/8/2PP4/P1N2N2/1P2PPPP/R1BQKB1R w KQkq - 0 6",
        "hash": "18128809222259428594",
        "name": "Queen's Indian: Petrosian, 5.Nc3 g6"
    },
    "E12m": {
        "eco": "E12m",
        "fen": "rn1qkb1r/pbp2ppp/1p2pn2/3p4/2PP4/P1N2N2/1P2PPPP/R1BQKB1R w KQkq d6 0 6",
        "hash": "10900970182361125023",
        "name": "Queen's Indian: Petrosian, 5.Nc3 d5"
    },
    "E12n": {
        "eco": "E12n",
        "fen": "rn1qkb1r/pbp2ppp/1p2pn2/3p2B1/2PP4/P1N2N2/1P2PPPP/R2QKB1R b KQkq - 1 6",
        "hash": "5841821374330981207",
        "name": "Queen's Indian: Petrosian, 5.Nc3 d5 6.Bg5"
    },
    "E12o": {
        "eco": "E12o",
        "fen": "rn1qk2r/pbp1bppp/1p2pn2/3p2B1/Q1PP4/P1N2N2/1P2PPPP/R3KB1R b KQkq - 3 7",
        "hash": "10915211704264365501",
        "name": "Queen's Indian: Petrosian, 5.Nc3 d5 6.Bg5 Be7 7.Qa4+"
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    "E12p": {
        "eco": "E12p",
        "fen": "rn1qkb1r/pbp2ppp/1p3n2/3p4/3P4/P1N2N2/1P2PPPP/R1BQKB1R w KQkq - 0 7",
        "hash": "11994850153319711817",
        "name": "Queen's Indian: Petrosian, 6.cxd5 exd5"
    },
    "E12q": {
        "eco": "E12q",
        "fen": "rn1qkb1r/pbp2ppp/1p3n2/3p2B1/3P4/P1N2N2/1P2PPPP/R2QKB1R b KQkq - 1 7",
        "hash": "6929935500407185281",
        "name": "Queen's Indian: Petrosian, 6.cxd5 exd5 7.Bg5"
    },
    "E12r": {
        "eco": "E12r",
        "fen": "rn1qkb1r/pbp2ppp/1p2p3/3n4/3P4/P1N2N2/1P2PPPP/R1BQKB1R w KQkq - 0 7",
        "hash": "472006186127432158",
        "name": "Queen's Indian: Petrosian, 6.cxd5 Nxd5"
    },
    "E12s": {
        "eco": "E12s",
        "fen": "rn1qkb1r/pbp2ppp/1p2p3/3n4/3P4/P1N1PN2/1P3PPP/R1BQKB1R b KQkq - 0 7",
        "hash": "12367348099221688698",
        "name": "Queen's Indian: Petrosian, 6.cxd5 Nxd5 7.e3"
    },
    "E12t": {
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        "hash": "16852781516583226669",
        "name": "Queen's Indian: Rubinstein Variation"
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        "hash": "8250308691353737795",
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        "hash": "2429878777377020824",
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        "hash": "6625822817689825607",
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        "hash": "15990333383884963287",
        "name": "Queen's Indian: Capablanca, Yates Variation"
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        "hash": "12192517415743147820",
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        "hash": "13838569687654915885",
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        "hash": "9126715053321457917",
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        "hash": "12234949750362572811",
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        "hash": "6409942699002487609",
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        "hash": "6081264954949499945",
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        "hash": "17281826809050311078",
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        "hash": "7956931308251410899",
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        "hash": "5179676595142728407",
        "name": "Queen's Indian: Opovcensky Variation"
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        "hash": "7653588831011434607",
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        "hash": "6888958129345390367",
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        "hash": "15776211748203243833",
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        "hash": "6307309093674428262",
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        "hash": "12824494285349530651",
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        "hash": "7000338966048528982",
        "name": "Queen's Indian: Pomar Variation"
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        "hash": "2329892608171090514",
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        "hash": "8034755700098914362",
        "name": "Queen's Indian: Pomar, Polugaevsky Variation"
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        "hash": "1277876482160018657",
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        "hash": "15401431851591137771",
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        "hash": "2358031062763949778",
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        "hash": "14323902492220769711",
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        "hash": "1802564255318902719",
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        "hash": "7942594177477268078",
        "name": "Queen's Indian: 7.Nc3 Na6"
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        "hash": "11948976521570779380",
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        "hash": "10731243242002469922",
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        "hash": "8713221842413348226",
        "name": "Queen's Indian: 7.Nc3 d5 8.Ne5"
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        "hash": "16902423877307086393",
        "name": "Queen's Indian: 7.Nc3 d5 8.Ne5 c6"
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        "hash": "5406833329533093966",
        "name": "Queen's Indian: 7.Nc3 d5 8.Ne5 Nbd7"
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        "hash": "3921296660177058110",
        "name": "Queen's Indian: 7.Nc3 d5 8.Ne5 Na6"
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        "hash": "528465424252972520",
        "name": "Queen's Indian: 7.Nc3 d5 8.Ne5 Na6 9.cxd5 exd5"
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        "hash": "1923358500586013480",
        "name": "Queen's Indian: 7.Nc3 Ne4"
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        "hash": "13652452506622667012",
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        "hash": "10166771441908459027",
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        "hash": "17748077147255361600",
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        "hash": "5495963238363612701",
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