Introduce and use same_color_squares()

[stockfish] / src / position.h

diff --git a/src/position.h b/src/position.h
index 4854b29dcf876dcf64d98c08ff1e8cc69784c85d..d213238882f7113fc55a8f15041f0a62766487d9 100644 (file)
--- a/src/position.h
+++ b/src/position.h
@@ -540,7 +540,7 @@ inline bool Position::opposite_colored_bishops() const {
 
   return   piece_count(WHITE, BISHOP) == 1
         && piece_count(BLACK, BISHOP) == 1
-        && square_color(piece_list(WHITE, BISHOP, 0)) != square_color(piece_list(BLACK, BISHOP, 0));
+        && !same_color_squares(piece_list(WHITE, BISHOP, 0), piece_list(BLACK, BISHOP, 0));
 }
 
 inline bool Position::has_pawn_on_7th(Color c) const {