id horde-start
epd rnbqkbnr/pppppppp/8/1PP2PP1/PPPPPPPP/PPPPPPPP/PPPPPPPP/PPPPPPPP w kq -
perft 1 8
perft 2 128
perft 3 1274
perft 4 23310

id horde-open-flank
epd 4k3/pp4q1/3P2p1/8/P3PP2/PPP2r2/PPP5/PPPP4 b - -
perft 1 30
perft 2 241
perft 3 6633
perft 4 56539

id horde-en-passant
epd k7/5p2/4p2P/3p2P1/2p2P2/1p2P2P/p2P2P1/2P2P2 w - -
perft 1 13
perft 2 172
perft 3 2205
perft 4 33781