Do not consider passing as capture

diff --git a/src/position.h b/src/position.h
index ead5799..8541111 100644 (file)
--- a/src/position.h
+++ b/src/position.h
@@ -945,7 +945,7 @@ inline bool Position::capture_or_promotion(Move m) const {
 inline bool Position::capture(Move m) const {
   assert(is_ok(m));
   // Castling is encoded as "king captures rook"
-  return (!empty(to_sq(m)) && type_of(m) != CASTLING) || type_of(m) == ENPASSANT;
+  return (!empty(to_sq(m)) && type_of(m) != CASTLING && from_sq(m) != to_sq(m)) || type_of(m) == ENPASSANT;
 }
 
 inline Piece Position::captured_piece() const {