X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fevaluate.cpp;h=ea37bbeb175e55ce37ae0320634ac641aad7d3a7;hp=a19f346d92328049d477e04701053de4bc413d21;hb=e05c80a08859f6c4f0f599ca0b262ced00ad66fe;hpb=7b31e81d77b636a635b327de91414a0585fedb2a

diff --git a/src/evaluate.cpp b/src/evaluate.cpp
index a19f346d..ea37bbeb 100644
--- a/src/evaluate.cpp
+++ b/src/evaluate.cpp
@@ -821,8 +821,7 @@ Value do_evaluate(const Position& pos, Value& margin) {
                 // If there is an enemy rook or queen attacking the pawn from behind,
                 // add all X-ray attacks by the rook or queen. Otherwise consider only
                 // the squares in the pawn's path attacked or occupied by the enemy.
-                if (   (forward_bb(Them, s) & pos.pieces(Them, ROOK, QUEEN))
-                    && (forward_bb(Them, s) & pos.pieces(Them, ROOK, QUEEN) & pos.attacks_from<ROOK>(s)))
+                if (forward_bb(Them, s) & pos.pieces(Them, ROOK, QUEEN) & pos.attacks_from<ROOK>(s))
                     unsafeSquares = squaresToQueen;
                 else
                     unsafeSquares = squaresToQueen & (ei.attackedBy[Them][ALL_PIECES] | pos.pieces(Them));