Free tool
Free chess game review
Get the same thing a paid game review gives you - an accuracy score, an evaluation graph and every move labelled from Best to Blunder - for free. Review one game move by move, or point it at your username and review every game you have played. Stockfish, in your browser, no account.
How do I get a free chess game review?
Enter your Chess.com or Lichess username in Audit Chess, or paste a PGN, and open any game in the Review tab. You get the same parts a paid review gives you: an accuracy score for both players, accuracy split by opening, middlegame and endgame, an evaluation graph, and every move given one of 10 labels from Exceptional to Blunder, with the engine’s better move shown on the board. Key moments come with a plain-English explanation that is built only from facts Stockfish has checked. For a single Chess.com game, you can also put “audit” in front of “chess.com” in the game link to open it straight in the review. There is no daily limit and no account, and Stockfish runs in your browser, so your games are not uploaded. Chess.com gives free members one full Game Review a day; unlimited reviews need a paid membership; Lichess analysis is free and unlimited, but it only flags inaccuracies, mistakes and blunders and does not split accuracy by phase.
What a game review shows you
A game review replays your game with the engine and turns it into something you can read at a glance. Three things do the work: an accuracy score that says how close your moves were to best, an evaluation graph that shows where the game swung, and a move-by-move label on every move so you can jump straight to the ones that mattered.
Open any flagged move and the board puts what you played next to the move the engine preferred, so you are not just told “blunder” - you see the better move and the line behind it. That is the difference between a score and an actual review.
The move labels explained
Every move gets one of 10 labels. The everyday ones are decided by how much evaluation the move lost compared with the engine’s best move; the special ones add rules on top:
Exceptional (!!)
The engine’s best move, and it sacrifices a knight, bishop, rook or queen - without leaving you worse, and when you were not already winning easily.
Awesome (!)
The engine’s best move when it is clearly the only good one: its win probability beats the second-best move by at least 15 percentage points.
Book
An opening move in the first 8 moves that gives nothing away.
Best
The move the engine would play.
Excellent / Good
Not the top choice, but within a small margin of it (see the table below). Perfectly fine chess.
Inaccuracy
A small slip that hands back some of your advantage - worth understanding, rarely fatal.
Mistake
A real error: a clear drop in evaluation. This is where games turn.
Miss
A mistake or blunder made from a winning position (75% or higher win probability) - a win you let slip.
Blunder
Anything worse than a mistake. Not given while you are still +6 or better after the move, or were already -6 or worse.
How much a move can lose before the label drops
The limits widen as the position gets more one-sided: losing a pawn from a level game matters far more than losing a pawn when you are already three up. Largest loss allowed, in pawns:
| Label | From a level position (0.00) | From +3.00 |
|---|---|---|
| Excellent | 0.28 | 0.82 |
| Good | 0.61 | 1.58 |
| Inaccuracy | 1.08 | 2.35 |
| Mistake | 2.26 | 3.74 |
| Blunder | more than the Mistake limit | |
Accuracy is worked out differently, with the same method Lichess uses: each move is scored by the win probability it gave away, then two averages are combined - one weighted towards the sharpest moments of the game, and a harmonic mean that a single big blunder pulls down hard.
Want the theory behind the labels? Read inaccuracies, mistakes and blunders explained.
Free game review, no paywall
Chess.com gives free members one full Game Review a day; unlimited reviews need a paid membership, and it only ever looks at one game at a time. Audit Chess gives you the review for free with no daily limit - accuracy, graph and move labels - because the engine runs on your own device, so there is nothing to meter and nothing about your games leaves your machine. If you are weighing the two, see Audit Chess vs Chess.com Game Review or the wider list of free Chess.com analysis alternatives.
Review one game, or every game
Reviewing one game tells you what went wrong on Tuesday. Reviewing your whole history tells you what to actually work on - and it is the same tool. Start with the game analyzer for a single game, then let the whole-history analyzer rank your openings by result and turn your repeated blunders into puzzles from your own games. For the full method, read how to analyze your chess games. Hit Chess.com's one-review-a-day limit? See how to get a free Chess.com-style game review.
Who is it for?
After a frustrating loss
Paste the game and see exactly where it slipped - the move, the swing, and what the engine wanted instead - instead of stewing over it.
Players without a paid membership
You do not need to pay for game review. Get the accuracy score, the graph and the move labels for free, for every game you play.
Coaches and students
Review a student’s latest games move by move in minutes, then jump to their whole history to see the patterns behind the one-off mistakes.
Anyone reviewing on the go
No install and no account - open the page, enter a username or paste a PGN, and the review runs on your device.
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
Is chess game review free here?
Yes - fully free, no account and no install, with no daily limit. Chess.com gives free members one full Game Review a day; unlimited reviews need a paid membership. Audit Chess reviews your games for free because the engine runs on your own device and there is no server cost to pass on.
What does the game review show me?
For each game you get an accuracy score for both players (also split by opening, middlegame and endgame), an evaluation graph across the whole game, and every move given one of 10 labels from Exceptional to Blunder. Open any labelled move and the board shows what you played next to the move the engine preferred.
How are the move labels decided?
By how much evaluation the move lost compared with the engine’s best move, against limits that widen the more one-sided the position already is. From a level position, losing up to about 1.1 pawns is at worst an inaccuracy, up to about 2.3 pawns a mistake, and more than that a blunder; from +3 the limits are wider. A move is never called a blunder while you are still completely winning (+6 or more) or were already completely lost. Accuracy is a separate number, worked out from the win probability each move gave away.
Can I review my Chess.com or Lichess games?
Both. Enter your username and Audit Chess reads your public games straight from the Chess.com and Lichess APIs - no export, no login. Or paste a single PGN to review just that game. Nothing is uploaded; the analysis runs in your browser.
How is this different from analyzing all my games?
Game review is per game: it walks one game move by move. The whole-history analyzer zooms out and finds the patterns across hundreds of games - which openings cost you rating, which mistakes you repeat, the wins you throw away. Most improving players use both: review to understand a loss, history to decide what to train.
Audit Chess is free and not affiliated with Chess.com or Lichess.