save

MJZ1977 · Aug 9, 2019 · 78bb4ea · 78bb4ea
1 parent fcee0ce
commit 78bb4ea
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/src/evaluate.cpp b/src/evaluate.cpp
@@ -634,7 +634,9 @@ namespace {
                 squaresToQueen = forward_file_bb(Us, s);
                 unsafeSquares = passed_pawn_span(Us, s);
 
-                bb = forward_file_bb(Them, s) & pos.pieces(ROOK, QUEEN);
+                bb = forward_file_bb(Them, s) & pos.pieces();
+                if (bb)
+                  bb &= pos.pieces(ROOK, QUEEN) & frontmost_sq(Us, bb);
 
                 if (!(pos.pieces(Them) & bb))
                     unsafeSquares &= attackedBy[Them][ALL_PIECES];