Modern chess database preparation for the competitive player.
Search 10.4 million games by position, opening, pawn structure, middlegame theme or endgame pieces in seconds. Have your engine, opening explorer, and database side by side in a dynamic workbench customized to your liking. Use features such as automated opponent scouting, leakfinder to catch the mistake you keep repeating, and spaced-repetition training on your own repertoire. Upload and access your databases on the cloud from any browser regardless of operating system.
Search by idea, with precise filters
Stack structures, endgames, openings, players, and ratings — “IQP + rook ending, White wins, 2600+” — and get the games that actually match.
Analyze player
Any player, reported automatically — the openings they really play, how they score line by line, and the gaps to target before round one. Free with an account.
Leakfinder — the mistake you keep making
Reads your own games and ranks the patterns that actually cost you, by the evaluation you give back per game. You get the one habit to fix first. Free with an account.
10.4M+ game database
Named events, players and ratings on every row, club to world championship. Full-database position search including transpositions — results in seconds, measured on production infrastructure (Aug 2026).
