Definition of en passant rule or law in English:

en passant rule (or law)

Chess The rule that a pawn making a first move of two squares instead of one may nevertheless be immediately captured by an opposing pawn on the fifth rank.
More example sentences
  • Although you may play a hundred games, and never have to use the En Passant rule, you should know it if your opponent uses it.
  • This en passant rule must happen on the current move of the game.
See parent entry: en passant

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