| 1. | The " en passant " rule applies as in standard chess.
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| 2. | It is allowed to capture en passant over the board edge.
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| 3. | "Allemande faite en passant le Rhin dans une barque en grand p�ril ".
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| 4. | The " en passant " rule is normally not used, but can be.
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| 5. | X-FEN, on the other hand, includes only true en passant squares.
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| 6. | Therefore, either Black cannot castle, or White can capture on g6 " en passant ".
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| 7. | I applaud the way technical and precise terms are unobtrusively explained " en passant ".
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| 8. | This does take into account promotion, castling and en passant, and also the 50-move rule.
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| 9. | A player still may resign at any point in the game, and en passant is legal.
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| 10. | However, " en passant " capture must be made on the first move of the turn.
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