fixed en passant offset

2025-02-04 21:50:30 +01:00 · 2025-02-04 21:50:30 +01:00 · e9c96e83da
commit e9c96e83da
parent 76310400e8
1 changed files with 2 additions and 1 deletions
--- a/cpp/src/board.cpp
+++ b/cpp/src/board.cpp
@ -183,7 +183,8 @@ Board Board::make_move(Move move) const {

    // -- Handle en passant target being eaten
    if (move.en_passant)
-        ret.squares[move.target_square - 8] = Piece::None;
+        ret.squares[move.target_square + (white_to_play ? -8 : 8)] =
+            Piece::None;

    // -- Handle promotion
    if (move.promoting_to != Piece::None)