Merge mobility area tweak

[stockfish] / src / evaluate.cpp

diff --git a/src/evaluate.cpp b/src/evaluate.cpp
index e861f5f032e95d80f54bb4137447e617686b338b..5a8a292f9a24c34596309562f6c86c79a29fb4c0 100644 (file)
--- a/src/evaluate.cpp
+++ b/src/evaluate.cpp
@@ -730,7 +730,7 @@ Value do_evaluate(const Position& pos, Value& margin) {
     Score score = mobility = SCORE_ZERO;
 
     // Do not include in mobility squares protected by enemy pawns or occupied by our pieces
-    const Bitboard mobilityArea = ~(ei.attackedBy[Them][PAWN] | pos.pieces(Us));
+    const Bitboard mobilityArea = ~(ei.attackedBy[Them][PAWN] | pos.pieces(Us, PAWN, KING));
 
     score += evaluate_pieces<KNIGHT, Us, Trace>(pos, ei, mobility, mobilityArea);
     score += evaluate_pieces<BISHOP, Us, Trace>(pos, ei, mobility, mobilityArea);