Author: Les Fernandez
Date: 10:52:17 11/30/01
Go up one level in this thread
On November 30, 2001 at 11:33:48, Robert Hyatt wrote: >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 Hi Bob, So in the previous diagram do I understand that e4 is in fact the same as Pd3xe4? I think thats what you are saying. Now how about this next case: [D]2k5/8/8/4p3/3Pp3/3P1P2/8/1K6 w - - Now the possibility of either the d3 pawn or the f3 pawn can capture the e4 pawn. What do we do in this scenario? Thanks all that responded. > >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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