X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fevaluate.cpp;h=23af60f36aede2d1adfa93eed2a04d56b8bd11a8;hp=10dddc7de009c7c02251feb037c02e1793c83b75;hb=fd96cba67603c9c2462d41887f79d4b6ac8920b1;hpb=19509e5f1313e3693a7ee56531326eed3c62a1af

diff --git a/src/evaluate.cpp b/src/evaluate.cpp
index 10dddc7d..23af60f3 100644
--- a/src/evaluate.cpp
+++ b/src/evaluate.cpp
@@ -641,7 +641,7 @@ namespace {
                 bb = forward_file_bb(Them, s) & pos.pieces(ROOK, QUEEN);
 
                 if (!(pos.pieces(Them) & bb))
-                    unsafeSquares &= attackedBy[Them][ALL_PIECES] | pos.pieces(Them);
+                    unsafeSquares &= attackedBy[Them][ALL_PIECES];
 
                 // If there are no enemy attacks on passed pawn span, assign a big bonus.
                 // Otherwise assign a smaller bonus if the path to queen is not attacked