Is there a daily limit?
No. Chess.com gives you one free game review a day and asks for a membership after that. Here there is no daily limit and no account, because Stockfish runs in your own browser tab and there is no server to queue for.
Free chess game review – every move analysed, no daily limit
Game review
Every move judged, from brilliant to blunder.
Accuracy and an estimated rating for both sides.
Your name goes to Lichess or Chess.com, never to a server here. Privacy
Before you start
- A game usually takes under a minute. The engine is a 7 MB download the first time, then it stays in your browser cache.
- One button searches every position for a brilliant move, including the ones you missed.
- You can drag a piece and play on from any position; the engine follows along.
Questions before the first game
Which games can it read?
Your twelve most recent games from Lichess or Chess.com, by the public name you play under. Both sides are analysed either way, so you can review a game you watched as well as one you played.
What comes back?
An accuracy score for both players, every move classified from brilliant down to blunder, and an estimated Elo for each side: the rating this game was played at. The move list is clickable, so every verdict leads back to the position that earned it.
How good is the estimated Elo?
It is calibrated against real games between 1400 and 2400. Outside that band it drifts, and now we have measured how far: below 800 it reads too high, above 2400 too low. One game is weak evidence in any case, so the estimate blends how you played with the rating you already carry rather than reading the game alone. Measured against fourteen sides from 100 to 3315, ten of twelve landed within 300 points, the worst by 525.