Looking for a PGN utility to remove chess960/frc games

[Dann Corbit]

I am looking for a tool (already written) that will remove all the FRC/Chess960 games from a PGN file.
Does such a thing exist?

[Norm Pollock]

The tool "fenRemove" in 40H-PGN tool box

http://komodochess.com/pub/40H-pgn-utilities/

Here is the readme:

Code: Select all

=========================(18) fenRemove ============================

"fenRemove" removes games containing a "FEN" tag except when the 
"FEN" position is the standard opening position.

The output file is "out6.pgn". Removed games are in "exclude6.pgn".

The "FEN" of the standard opening position:

  rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1

Use "tagFix" to remove "FEN" & "SetUp" tags for the standard opening
position.

Syntax:   fenRemove filename.pgn 

Example:  fenRemove alpha.pgn

Output:   out6.pgn, exclude6.pgn

Comments:

     1. "fenRemove" removes almost all "Chess960" ("Fischer Random 
        Chess") games. The only games it does not remove are the
        games where the "FEN" position is the standard opening 
        position, a 1 out of 960 possibility.

[Dann Corbit]

Sir,
If you have not been nominated for Knighthood, that is a dreadful oversight.
I believe that the name Norman itself has Heraldic roots.

[Deberger]

pgn-extract seems most logical.

Extract games which match the start position and do not have the Variant tag.

[Ozymandias]

You don't even need the Variant tag:

Code: Select all

pgn-extract -s -C -N -V -tstartpos.txt -oclean.pgn database.pgn

where startpos.txt is:

Code: Select all

FEN "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1"

I prefer this over fenRemove, because oftentimes, I first need to clean the DB anyway and pgn-extract takes care of both tasks, in one go.

[Jonathan003]

You can also do it with SCID. You first have to make a new database in SCID format and inport the pgn database, than when finished you can export the database to a pgn database. Scid 4.7 is very fast and can handle very big databases. I use the windows version but there is also a linux version.

Here is a interesting video tutorial that describe how to do it in Scid Vs PC, but you can do the same with Scid 4.7

It's described at minute 22