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The en passant capture places Black in double check and checkmate (in fact, White's bishop is not necessary for the mate). An en passant capture is the only way a double check can be delivered without one of the checking pieces moving, as in this case. The largest known number of en passant captures in one game is three. This record is shared ...
A pawn captures by moving diagonally forward one square to the left or right, either replacing an enemy piece on its square (first diagram) or capturing en passant (second diagram). An en passant capture can occur after a pawn makes a move of two squares and the square it passes over is attacked by an enemy pawn. The enemy pawn is entitled to ...
A move by a pawn or piece that removes from the board the opponent's pawn or piece. The capturing piece then occupies the square of the captured piece, except in the case of a capture that is done en passant. [66] castling A move in which the king and a rook are moved at the same time.
En passant: when a pawn makes a two-square advance to the same rank as an opponent's pawn on an adjacent file, that pawn can capture it en passant ("in passing"), moving to one square behind the captured pawn. A pawn can only be captured en passant on the turn after it makes a two-square advance. In the animated diagram, the black pawn advances ...
White may also choose to preserve his pawn on e5 by playing 4.e5 Nfd7 5.c3 c5 6.f4 Nc6 7.Ndf3, but his development is slowed as a result, and Black will gain dynamic chances if he can open the position to advantage. 3...Nc6 is known as the Guimard Variation: after 4.Ngf3 Nf6 5.e5 Nd7 Black will exchange White's cramping e-pawn next move by ...
In most chess problems, including retrograde analysis problems, castling is assumed to be legal unless it can be proved otherwise. An en passant capture, on the other hand, is permitted only if it can be proved that the last move was a double step of the pawn to be captured.
Capturing en passant, however, must be done on the first move of the turn. When two pawns can be captured en passant, both can be captured in the turn. To ensure White's advantage of moving first is not excessive, usually a "balanced" version of the game is played. In the balanced version, White makes only one move on the first
and receiving a positive answer obligates the asking player to then attempt a pawn capture: if this capture is unsuccessful, the asking player may then try any other move, pawn capture or not. En passant pawn tries are announced, but not the fact that they are en passant captures.