c File:  hole10.cnf
c
c SOURCE: John Hooker (jh38+@andrew.cmu.edu)
c
c DESCRIPTION: Pigeon hole problem of placing n (for file holen) pigeons
c              in n+1 holes without placing 2 pigeons in the same hole
c
c NOTE: Part of the collection at the Forschungsinstitut fuer 
c       anwendungsorientierte Wissensverarbeitung in Ulm Germany.
c
c NOTE: Not satisfiable
c
p cnf 110 561
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 10 9 8 7 6 5 4 3 2 1 0
 20 19 18 17 16 15 14 13 12 11 0
 30 29 28 27 26 25 24 23 22 21 0
 40 39 38 37 36 35 34 33 32 31 0
 50 49 48 47 46 45 44 43 42 41 0
 60 59 58 57 56 55 54 53 52 51 0
 70 69 68 67 66 65 64 63 62 61 0
 80 79 78 77 76 75 74 73 72 71 0
 90 89 88 87 86 85 84 83 82 81 0
 100 99 98 97 96 95 94 93 92 91 0
 110 109 108 107 106 105 104 103 102 101 0