Connect your Lichess or Chess.com account and get your first report free, no login, no card. Stockfish analyzes your last 10 games and identifies your most damaging patterns.
More games = clearer patterns. Paid reports cover up to 100 games.
Lichess is fastest. Chess.com users: if import fails, download your games as a PGN file and use the Upload option below, that always works.
Once you submit, Stockfish evaluates every position across your selected games and groups your significant errors into recurring mistake types, ranked by how much each one costs you. You get back a ranked diagnosis of what keeps costing you rating points, not a move-by-move log of a single game. Nothing is written back to your Lichess or Chess.com account, and the connection only reads your public game history.