Author: Dann Corbit
Date: 21:01:45 09/30/05
Go up one level in this thread
On September 30, 2005 at 23:48:42, Bruce Moreland wrote: >As far as I know there has been no revision to the standard for ten years. >Please correct me if I am wrong, and I would love to be wrong. > >Problems: > >1) No clear definition of export standard. Is there one writer that is >considered the standard? > >2) NAGs do not correlate well with Informant/ECO symbols. There are some ECO >meanings that don't exist, and other NAGs are ambiguous in that context. This >sounds like a trivial problem, but it causes hell if you try to write something >that reads PGN, converts to some sane format for editing, and then write it back >out to PGN. > >3) The standard allows comments in stupid places, some of which won't seem >stupid to some people. > >Assume you are parsing a file, and you find a comment. You really want to >attach it to a move. This is kind of hard to do if the comment follows the last >game in the file, if it occurs between games, occurs in the middle of a tag, >etc. > >Anyone else know of problems? Anyone else have any idea how to fix them? I complained about en passent sqares that don't exist. The standard says that these two positions are different: [d]3k4/3p4/8/8/3P4/8/8/3K4 b - - [d]3k4/3p4/8/8/3P4/8/8/3K4 b d2 - Clearly they are not. >Last time I sent email to Steven J Edwards about this, he essentially told me >that great minds were working on it, and that I should shut up and go away. > >That was in about 1997. That pretty much sums it up. There have been some efforts at adding stuff for computer chess (that %emt, %clk goo}: http://www.enpassant.dk/chess/palview/enhancedpgn.htm If you want to see a parser that can really go to town, PGN-Extract by Barnes is really good. Winboard has really clever parsing stuff in it to deal with crappy inputs. The Elo calculation stuff by Remi has a real nice PGN parser in it.
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