Free tool
Analyze your Lichess games
Lichess already gives you world-class analysis of one game. Audit Chess adds the layer on top: enter your username and it reviews your whole history with Stockfish to show what a single-game view can’t - the openings that keep losing, the mistakes you repeat, and the winning positions you throw away. Free, in your browser, no account.
How do I analyze all my Lichess games at once?
Enter your Lichess username in Audit Chess and pick how many recent games to load, up to 5,000. It downloads your public games from the Lichess API, with no export or login, and runs Stockfish over every game in your browser. Instead of one analysis board per game, you get the patterns across your whole history: an opening tree and an openings table ranked by your real score, mistakes grouped by tactic, positional and endgame theme, blown wins, missed mates, and an endgame and playstyle profile. Every game still gets a move-by-move review with accuracy and move labels, and your blunders turn into puzzles from your own positions. Lichess’s own analysis is free, open and excellent for a single game; Audit Chess adds the whole-history layer on top, also free and with no account.
What Audit Chess adds to Lichess analysis
Lichess per-game analysis answers “what was the best move here?” brilliantly. It is not built to answer “which of my openings should I stop playing?” or “which mistake do I make in every third game?” - those need all your games at once. Audit Chess reads your public games from the Lichess API, scores every move with Stockfish in your browser, and turns them into an opening tree ranked by your real results, a list of the weaknesses that recur, and the games you were winning and lost.
See the side-by-side in Audit Chess vs Lichess analysis.
From your games to what to practise
The blunders and missed tactics in your Lichess games become Stockfish-verified puzzles built from the exact positions you got wrong, so studying your own play turns straight into practice. It also profiles your endgames and playing style. New to engine analysis? Start with how to use Stockfish and how to analyze your chess games.
Play on both platforms?
If you split your games between sites, you can also analyze your Chess.com games the same way and compare the two profiles - the openings and leaks often differ by platform and time control.
What is Audit Chess?
Audit Chess is a free chess analysis platform for your Chess.com and Lichess games. It does two jobs in one place. First, it reviews any single game move by move with Stockfish: every move graded from Brilliant to Blunder, accuracy by game phase, an eval graph, and a plain-English, engine-checked explanation of each key moment. Second, it analyzes your whole history at once to find what a single game can't show: the openings that cost you points, your mistakes ranked by tactical, positional and endgame theme, the wins you throw away, missed mates, and your endgame and playstyle profile. Then it turns your own blunders into Stockfish-verified puzzles and drills. It runs in your browser, needs no account, has no review limit and never uploads your games.
In short: a complete free alternative to a paid per-game review, plus the whole-history view that tells you what to study next. See all features.
Frequently asked questions
How do I analyze my Lichess games?+
Enter your Lichess username on Audit Chess. It reads your public games from the Lichess API, replays each one with Stockfish, and builds a profile across your whole history: openings ranked by result, the blunders you repeat, the wins you throw away, your endgame and playstyle tendencies, and puzzles from your own mistakes - all in your browser, free.
Does this replace Lichess computer analysis?+
No - it sits on top of it. Lichess is excellent for studying one game or position deeply. Audit Chess analyzes all of your games together to show the cross-game patterns Lichess per-game analysis is not designed to surface: your worst openings by result, repeated mistakes, blown wins, and an endgame and playstyle profile.
Do I need a Lichess account or to be logged in?+
No. Audit Chess only reads the games your Lichess profile already makes public, by username. You do not log in to Lichess and you do not create an account here; the engine runs locally in your browser and nothing is uploaded.
Can I analyze bullet and blitz, or only classical?+
Any time control in your history. You can look at everything together or focus on a format - useful because the openings and mistakes that cost you rating in blitz are often different from your slower games.
Audit Chess is free and not affiliated with Chess.com or Lichess.