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» Latest abrok Development Version October 4th (SF The gift that keeps on giving
 CGR games database  by Benoit St-Jean EmptyYesterday at 2:26 pm by LondonFrau

» ShashChess 36
 CGR games database  by Benoit St-Jean EmptyFri Sep 20, 2024 10:21 pm by LondonFrau

» Latest abrok Development Version Setpember 17th (SF The gift that keeps on giving
 CGR games database  by Benoit St-Jean EmptyWed Sep 18, 2024 4:19 pm by LondonFrau

» Latest abrok Development Version Setpember 9th (SF The gift that keeps on giving
 CGR games database  by Benoit St-Jean EmptyTue Sep 10, 2024 2:58 pm by LondonFrau

» Stockfish 17 is available
 CGR games database  by Benoit St-Jean EmptyFri Sep 06, 2024 4:40 pm by theropodes

» Latest abrok Development Version August 20th (SF The gift that keeps on giving
 CGR games database  by Benoit St-Jean EmptySat Aug 24, 2024 12:15 pm by LondonFrau

» Eman 9.40
 CGR games database  by Benoit St-Jean EmptySat Aug 03, 2024 12:58 pm by deeds

» Update default main net to nn-31337bea577c.nnue Latest abrok Development Version July 23 rd (SF The gift that keeps on giving
 CGR games database  by Benoit St-Jean EmptyTue Jul 23, 2024 9:04 pm by LondonFrau

» Latest abrok Development Version July 11th (SF The gift that keeps on giving
 CGR games database  by Benoit St-Jean EmptySun Jul 14, 2024 4:21 am by LondonFrau

Latest topics
» Latest abrok Development Version October 4th (SF The gift that keeps on giving
 CGR games database  by Benoit St-Jean EmptyYesterday at 2:26 pm by LondonFrau

» ShashChess 36
 CGR games database  by Benoit St-Jean EmptyFri Sep 20, 2024 10:21 pm by LondonFrau

» Latest abrok Development Version Setpember 17th (SF The gift that keeps on giving
 CGR games database  by Benoit St-Jean EmptyWed Sep 18, 2024 4:19 pm by LondonFrau

» Latest abrok Development Version Setpember 9th (SF The gift that keeps on giving
 CGR games database  by Benoit St-Jean EmptyTue Sep 10, 2024 2:58 pm by LondonFrau

» Stockfish 17 is available
 CGR games database  by Benoit St-Jean EmptyFri Sep 06, 2024 4:40 pm by theropodes

» Latest abrok Development Version August 20th (SF The gift that keeps on giving
 CGR games database  by Benoit St-Jean EmptySat Aug 24, 2024 12:15 pm by LondonFrau

» Eman 9.40
 CGR games database  by Benoit St-Jean EmptySat Aug 03, 2024 12:58 pm by deeds

» Update default main net to nn-31337bea577c.nnue Latest abrok Development Version July 23 rd (SF The gift that keeps on giving
 CGR games database  by Benoit St-Jean EmptyTue Jul 23, 2024 9:04 pm by LondonFrau

» Latest abrok Development Version July 11th (SF The gift that keeps on giving
 CGR games database  by Benoit St-Jean EmptySun Jul 14, 2024 4:21 am by LondonFrau

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  CGR games database by Benoit St-Jean

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LondonFrau
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 CGR games database  by Benoit St-Jean Empty
PostSubject: CGR games database by Benoit St-Jean    CGR games database  by Benoit St-Jean EmptyTue Feb 21, 2017 9:56 am

As I was collecting games to build an opening book for my chess engine (in development), I thought "why not share my games with everyone" ? And then it became a project of its own!

Well, here's the very first release of the CGR database!



 CGR games database  by Benoit St-Jean 029
“Chess”, oil painting by Sultanov Yuriy
Dear chess friends,
The first release of the CGR database is available! Check [You must be registered and logged in to see this link.]!
But I have a few questions for you. Ideally, if we want to discuss this together, the easiest way would be to join the [You must be registered and logged in to see this link.] dedicated to the CGR.
Do you prefer the current filter on games (this database only includes games where BOTH players have a 2200+ Elo) or you’d prefer something like “all games where at least one of the players has 2200+ Elo” ?  I have found MANY games where one of the players was 2200+ but played a much weaker opponent (e.g. simultaneous exhibition, historical games or games against “famous” rated players, many games played at the Chess Olympiads where the weaker player was from a small country and rated below 2000, etc).  Do you really need a Karpov’s game played against a 10 year-old kid rated 1281 at a simultaneous exhibition???
Do you want games played by computer chess programs? I was thinking of adding the WhiteIsComp/BlackIsComp tag when it was missing to clearly identify those games/players.  What do you think?  That way you could filter out those games if you don’t want them.
I have kept every optional/non-standard tag (not defined in the [You must be registered and logged in to see this link.]) of the original games processed.  I think the more info you have, the better.  Perhaps you’d be interested to know that this “new move” of Carlsen was played in a 5-minute game?
I have cleaned all entries with the “(wh)” or “(bl)” suffix in the White/Black tags. This info was idiotic/useless as the player’s color is already identified by the PGN tag!  Do you know of any other idiotic/useless/annoyance you’ve seen in PGN files?
I have not included games with no termination as they usually indicate a correspondence game not finished (or in progress).  Can you think of any other reason as to why a game would end with no result?  Even death of a player has to have a result in chess games!
It’s been known for a while, games from the [You must be registered and logged in to see this link.] (Computer Chess Rating Lists) use a “custom” round number and many chess database programs don’t seem to like it.  Besides, importing CCRL games will often cause the famous “Round Name limit of 262143 exceeded” error in [You must be registered and logged in to see this link.] or [You must be registered and logged in to see this link.]. So I have decided to replace the round number in the CCRL games by the default value of “?”.  Does any one have a problem with this?  Do you have any idea/suggestion/comment on this?
Another options I wasn’t sure about is how to package the releases.  Do you prefer games split in smaller PGN files (like ECO classification, e.g A, B, C, D, E) or just one big PGN file? You have to take into consideration that soon (I hope), we will hit the 16 million games limit in Scid…  For those who use other chess database software, are there similar limits?  Do you want the database in multiple Zip files or just one Zip file?
Finally, as a side note, the next release will probably be another FULL one as I have another 83G of PGN games ready ! I have kept the 206G that made it into this first release as I am trying to automate the whole process and cut manual intervention to the minimum. I’ll keep you posted on how it goes once I add an extra 83G next time and build the database from the raw files once again!!
If you have a minute or two, send me an email and tell me what you want, what you like, what you don’t like, your ideas, suggestions, even complaints!  Especially complaints!  Even better, join the [You must be registered and logged in to see this link.]!
Please, also take a few seconds to answer my [You must be registered and logged in to see this link.].  The database is released in PGN format right now for drive space/bandwidth reasons and also because every database can read this format.  But if 99% of you are using Scid, I could well end up releasing the database in Scid format!
And if you have an extra 5 minutes, send me any games your have collected since January 1st 2017 (don’t bother sending me files from any website on [You must be registered and logged in to see this link.] list, I have collected 90% of them already) !  Read the instructions [You must be registered and logged in to see this link.].
The more I will get new games, the bigger this database will get.  And the faster it will grow!

[You must be registered and logged in to see this link.]

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Bettina...............The greatest happiness of life is the conviction that we are loved.

Victor Hugo
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 CGR games database  by Benoit St-Jean Empty
PostSubject: Re: CGR games database by Benoit St-Jean    CGR games database  by Benoit St-Jean EmptyFri Feb 24, 2017 4:14 pm

thanks for sharing gws gws
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