Author: Oliver Roese
Date: 21:36:04 06/16/00
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On June 16, 2000 at 23:20:44, James Robertson wrote: >To specify the en passant square in fen/epd,which is correct: e4 or e3, assuming >the white pawn on e4 can be captured by a black pawn on d4/f4? > >Thanks, >James Snippets of the pgn standard: ... En passant captures do not have any special notation; they are formed as if the captured pawn were on the capturing pawn's destination square. ... ... The fourth field is the en passant target square. If there is no en passant target square then the single character symbol "-" appears. If there is an en passant target square then is represented by a lowercase file character immediately followed by a rank digit. Obviously, the rank digit will be "3" following a white pawn double advance (Black is the active color) or else be the digit "6" after a black pawn double advance (White being the active color). An en passant target square is given if and only if the last move was a pawn advance of two squares. Therefore, an en passant target square field may have a square name even if there is no pawn of the opposing side that may immediately execute the en passant capture. ... Oliver Roese
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