Lower SingularExtensionDepth to 7 plies for non-pv

[stockfish] / src / position.h

diff --git a/src/position.h b/src/position.h
index 4854b29dcf876dcf64d98c08ff1e8cc69784c85d..e3749cdb4f6fd50deabff8b5d12b5446be90fc47 100644 (file)
--- a/src/position.h
+++ b/src/position.h
@@ -364,7 +364,7 @@ inline PieceType Position::type_of_piece_on(Square s) const {
 }
 
 inline bool Position::square_is_empty(Square s) const {
-  return piece_on(s) == EMPTY;
+  return piece_on(s) == NO_PIECE;
 }
 
 inline bool Position::square_is_occupied(Square s) const {
@@ -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 {