X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=src%2Fmove.cpp;h=f589889b444ca2bc081f69465a59520a2405d44d;hb=2608b9249d9c25a699c8db8725e35bd4ec0b65ab;hp=e52a8e59e688853fad3557314e5850da63b62d71;hpb=2a21543c88f82a64ee48d00d706db102c0c4637d;p=stockfish

diff --git a/src/move.cpp b/src/move.cpp
index e52a8e59..f589889b 100644
--- a/src/move.cpp
+++ b/src/move.cpp
@@ -84,7 +84,7 @@ const string move_to_san(Position& pos, Move m) {
   bool ambiguousMove, ambiguousFile, ambiguousRank;
   Square sq, from = from_sq(m);
   Square to = to_sq(m);
-  PieceType pt = type_of(pos.piece_on(from));
+  PieceType pt = type_of(pos.piece_moved(m));
   string san;
 
   if (is_castle(m))
@@ -98,7 +98,7 @@ const string move_to_san(Position& pos, Move m) {
           // Disambiguation if we have more then one piece with destination 'to'
           // note that for pawns is not needed because starting file is explicit.
           attackers = pos.attackers_to(to) & pos.pieces(pt, pos.side_to_move());
-          clear_bit(&attackers, from);
+          attackers ^= from;
           ambiguousMove = ambiguousFile = ambiguousRank = false;
 
           while (attackers)