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June 2018 Update

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Ingy döt Net 2018-06-22 20:57:24 +00:00
parent ba8067c3b7
commit 22f33d4004
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Task/N-queens-problem/Prolog/n-queens-problem-6.pro Normal file
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not_diagonal(X, N) :-
maplist(plus, X, N, Z1), maplist(plus, X, Z2, N), is_set(Z1), is_set(Z2).
queens(N, Qs) :-
numlist(1, N, P), findall(Q, (permutation(P, Q), not_diagonal(Q, P)), Qs).