If I have a large collection of games in a database in PGN format, how can I eliminate duplicate games. I see that my db has plenty. I have Fritz 11 among other programs but none seem to be able to do this. Any help appreciated.
Chessbase is excellent for manipulating large game collections. In Chessbase, right-click on a database and select Tools | Find Double Games. Alternatively there's the freeware program SCID. In that, select File | Maintenance | Delete Twin Games. In either case, be sure to make a backup before performing this operation.
Thank you. I downloaded SCID and it works just fine.
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