Step 1
Organize your studies
Share or export a completed game as PGN, then keep it in the folder and order that make sense to you.
Organize Your Studies. Improve with AI.
Chess Buff gives every completed game a durable home, a serious analysis board, and a Codex-connected learning loop that helps you return consistently.
7 days free, then $7/month. Not for live-game assistance.
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Active study
Your analysis stays attached to the position.
Study library
Losses to study12 games
Sicilian ideas8 games
Continue Rivera studyMove 21
A clean loop from game to understanding
The app is intentionally narrow: organize completed games, study the chess, save what you learned, and know what to revisit.
Step 2
Study the real position
Use a legal board, complete move tree, Stockfish, comments, and variations without losing your place.
Step 3
Learn consistently with Codex
Use the private MCP connection to discuss the exact study, save the takeaway, and return to the next useful position.
Founder access for serious review
One paid plan keeps the product simple while the training loop is still getting sharper.
Chess Buff Founder
Everything needed for the current Codex-connected post-game workflow.
$7/mo
PGN study library with folders and manual order
Comments, legal variations, and resume state
Stockfish-backed move-tree analysis
Codex learning through private MCP access
Completed games only
Chess Buff is designed for honest post-game review. Use it after a game ends to understand the mistake and build the next rep.