annoying en passant x-ray by Georg von Zimmermann, CCC, November 30, 2003.Fowell, CCC, February 27, 2000 » Castling Rights, Repetitions Does your program understand castling/en passant rights on 3x repetition by Richard A.Unique nodes, en passant and perfect hashing by Andreas Stabel, CCC, November 25, 1999.en-passant move generation by Larry Griffiths, CCC, February 06, 1999.Hash Tables - Should one store EP, Castling rights etc? by Steve Maughan, CCC, January 30, 1999 » Castling Rights, Transposition Table.IsiChess pushed its white pawn from b2 to b4 "between" the two advanced pawns a4 and c4 from Henk, allowing two possible en passant options. Gerd Isenberg had a special en passant experience with IsiChess at Aegon 1994 in the game versus Henk Arnoldus. Almost every chess programmer had various issues with it, most notable Louis Kessler with his Program Brute Force. The implementation of the en passant rule often caused subtle bugs. The legality test should be best applied in making of the double pawn push, also considering updating Zobist keys to avoid dissimilarity of otherwise repeated positions if the first occurrence happened after a double pawn push with no en passant capture actually possible. ♞ Challenge KC and others for turn style chess at bit.8/6bb/8/8/R1pP2k1/4P3/P7/K7 b - d3 after d2-d4 ►Subscribe for my regular chess videos: ►Support the channel by donating via PayPal: In algebraic notation, the capturing move is written as if the captured pawn advanced only one square, for example, bxa3 (or bxa3e.p.) in the first example.:216 In either algebraic or descriptive chess notation, en passant captures are sometimes denoted by "e.p." or similar, but such notation is not required. It is the only capture in chess in which the capturing piece does not replace the captured piece on its square.:463 White captures the pawn en passant, as if it had moved only one square to f6.Įn passant is a unique privilege of pawns: pieces cannot capture en passant. As in typical play, if it moves to f6 (marked by ×), the white pawn could capture it.Ĭhessboard480.svg f6 black cross e5 white pawn f5 black pawnīlack moved his pawn forward two squares in a single move from f7 to f5, "passing" f6. The capture can only be made on the move immediately after the opposing pawn makes the double-step move, otherwise the right to capture it en passant is lost.Ĭhessboard480.svg f7 black pawn f6 black cross e5 white pawn The captured pawn must be on an adjacent file and must have just moved two squares in a single move (i.e. The capturing pawn must be on its fifth rank This article uses algebraic notation to describe chess moves.Ī pawn on its fifth rank may capture an enemy pawn on an adjacent file that has moved two squares in a single move, as if the pawn had moved only one square. It prevents a pawn from using the two-square advance to pass an adjacent enemy pawn without the risk of being captured. The en passant capture rule was added in the 15th century when the rule that gave pawns an initial double-step move was introduced. En passant capture is a common theme in chess compositions. Like any other move, if an en passant capture is the only legal move available, it must be made. The en passant capture must be made at the very next turn or the right to do so is lost. The resulting position is the same as if the pawn had moved only one square forward and the enemy pawn had captured it normally. The opponent captures the just-moved pawn "as it passes" through the first square. It is a special pawn capture that can only occur immediately after a pawn moves two ranks forward from its starting square and an enemy pawn that could have captured it had it only moved forward only one square. For other uses, see En passant (disambiguation).Įn passant (from French: in passing) is a move in chess. This article is about the chess move 'en passant'. ![]() Kingscrusher and others: ♚ Subscribe to best Youtube Chess Video Channel : ![]() Beginner kingscrusher Rules En passant Pawn Beginner
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