r/ComputerChess • u/Ultica • 1d ago

Looking for anyone with a large database of player games

Hello everyone! For the past year, I've been working on an online chess research tool that analyzes the opening phase of the game. So far I've been able to get ahold of about 7.5 million games, all played by semi-competitive chess players on lichess (2500+). While that may sound like a large number, I've come to the realization that the ideal amount of games to populate an opening explorer with statistic would be around twice that number.

If anyone has a large amount of chess games played either OTB or online and that's not from lichess or a commercial package like Chessbase, please send me a message!

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u/ChessViper 1d ago

There's Lumbra's gigabase with 12M games

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u/Ultica 1d ago

I actually already have Lumbra's Gigabase, but since I plan on selling my research tool as a service, I've purposefully excluded all non-commercial items from its development (Lumbra's Gigabase license is CC BY-NC-SA 4.0., which is non-commercial). I would have liked to make it free for everyone, but I need some money to keep the website and server running (especially since I'm a solo dev).

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u/Grab_Critical 1d ago

If you take both databases (online and OTB) it should be around twice that much.