I don't think the option exists, but I haven't had Fritz10 for very long yet anyway. I have this database of over 200.000 games that I'm collecting from sites like chessbase.com. Sometimes I am not sure whether a game is already in my database or not. No problem, with the search filter I can check that. But what if it isn't one game but a few hundred in a game collection all from different tournaments? Checking them all manually would take forever. Well, maybe not quite but certainly a very long time. Does anyone know if there is an option somewhere in Fritz10 to check the database for games that appear twice in the same database?

Try to outsmart Fritz. Tell him to find all games with identical position after let's say 30 moves. then you can find clones yourself.

Chessbase has this option. Dont know about Fritz.

milutinovic wrote:

Try to outsmart Fritz. Tell him to find all games with identical position after let's say 30 moves. then you can find clones yourself.

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This is a smart way of doing it, only very time consuming as I'm thinking of checking hundreds of games :(

Mardeth wrote: Chessbase has this option. Dont know about Fritz.

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Thanks. Do you know if the free chessbase light download has this option too? I wasn't planning on spending lots of money to keep my database tidy...

Does anyone else know if Fritz10 or Chessbase light (the free version) has this option?

I had a look through these articles, but I couldn't see it mentioned (although I might have missed it).  I would expect that it DOES have that feature.  Why not just download it and find out, as it's free anyway?

I did download Chessbase Light, and indeed, it has the feature I was looking for! Only "problem" is that with the free download you can only use databases that aren't bigger than 32000 games and mine is around 250000, so I have to cut it up into smaller chunks (I'm dividing them according to year) and then check. I've done two years so far, and found around 2000 doubles already!

 

Thanks for your help everyone!