Resolve rare en passant bug

chesskit-app / chesskit-swift

♟️ Swift package for implementing chess logic.

MIT License

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Closed pdil closed 2 months ago

pdil commented 2 months ago

Added en passant step to move validation to prevent en passant moves that leave the king in check.
For an example of such a position see: 1nbqkbnr/1pp1pppp/8/r1Pp3K/p7/5P2/PP1PP1PP/RNBQ1BNR w k d6 0 8

fixes #18