Fix a small bug in king safety

Merged from iPhone Glaurung. Signed-off-by: Marco Costalba <mcostalba@gmail.com>
mcostalba · Mar 22, 2009 · ef8acdc · ef8acdc
1 parent cc8e915
commit ef8acdc
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/evaluate.cpp b/src/evaluate.cpp
@@ -782,7 +782,7 @@ namespace {
                         if (    bit_is_set(p.piece_attacks<QUEEN>(from), to)
                             && !bit_is_set(p.pinned_pieces(them), from)
                             && !(rook_attacks_bb(to, occ & ClearMaskBB[from]) & p.rooks_and_queens(us))
-                            && !(rook_attacks_bb(to, occ & ClearMaskBB[from]) & p.rooks_and_queens(us)))
+                            && !(bishop_attacks_bb(to, occ & ClearMaskBB[from]) & p.bishops_and_queens(us)))
 
                             ei.mateThreat[them] = make_move(from, to);
                     }