Author: Robert Hyatt
Date: 08:33:48 11/30/01
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On November 30, 2001 at 10:55:00, Les Fernandez wrote: >On November 30, 2001 at 10:44:47, Andreas Stabel wrote: > >>On November 30, 2001 at 10:13:58, Les Fernandez wrote: >> >>>In the following position can someone tell me how to properly represent the >>>capture of the black pawn on e4. It is white to move. Obviously we cant just >>>say "de" since we could be talking about the capture of the e5 pawn. Secondly >>>regarding pawns are their any other positions that exist that have other types >>>of ambiguities. >>> >>>[D]2k5/8/8/4p3/3Pp3/3P4/8/1K6 w - - >>> >>> >>>Thanks >> >>There is absolutely no ambiguity here because in the PGN/SAN standard you >>should always give the full destination square of a pawn move, so it >>should be dxe4. > >Hi Andreas > >First of all am I to understand that there is no 2 character designation for a >pawn move, say e4?? Or is it only legal since it does not involve a capture or >is this not considered standard? for pawn moves, only a destination square may be given. For piece moves, the piece "letter" plus the destination square is the simplest form. If this leads to an ambiguous move (either of the above) then the move is qualified by adding either the originating file letter, or if that is still ambiguous, by trying the originating rank number instead. e4 is fine for a capture, dxe4 is required as a4 can't be a capture. _all_ captures have an "x" in them > >Listen I thought I had the doc on the PGN/SAN standard but judging by what you >have stated perhaps I dont have the complete/thorough report. Can you tell me >where I might find this? I would appreciate it and thanks for your help. > > Search for PGN. The SAN specification is included. > >> >>There is a possible ambiguity in the following position: >>[D]4k3/8/8/2pP4/3P4/8/8/4K3 w - c6 >> >>One should think that dxc5 is ambigous here, but the PGN/SAN standard states >>that the en passant capture of the c5 pawn should be given as dxc6 ! >> >>Best regards >>Andreas Stabel
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