Paste a Chess.com or Lichess username, a game link or a PGN. Stockfish 18 analyzes the game in your browser: accuracy for both sides, a label on every move and the best move in every position. There is no daily limit and no signup.
How many games you can analyze
A free Chess.com account gets one full Game Review a day, according to Chess.com’s help center. Play five games in an evening and four of them wait until tomorrow.
There is no quota here. The engine runs in your browser, so you can open as many games as you like, in any order. Lichess analyzes games for free too and shows accuracy. chess.rodeo helps when you play on both sites: a username pulls games from Chess.com and Lichess, and both are analyzed the same way.
What the engine computes
- Accuracy for each side, with the Lichess formula: the evaluation lost on each move becomes lost winning chances.
- Move labels, ten of them: Brilliant, Great, Best, Excellent, Good, Book, Inaccuracy, Mistake, Miss and Blunder.
- The best move in every position, with the evaluation before and after the move played.
- An evaluation graph, where a sharp swing marks the moment the game was decided.
Search depth
Stockfish 18 searches to depth 15 for free. Positions already in the evaluation database need no search, so well-known openings are analyzed faster. With Pro you can raise the depth to 22 or hand the work to the server.
How to analyze a game
- Paste a username, a link or a PGN into the field above. A username is looked up on both Chess.com and Lichess.
- Open the game. The analysis runs on the game page.
- Go through the mistakes. Start with blunders and misses, then look at where the evaluation slipped move by move.
Related tools
- Chess Game Analysis: one game, move by move, with the best move in each position.
- Chess Review: how to review your games after a session.
- PGN Analyzer: when your games are already in a file.
- Chess Accuracy Calculator: what accuracy is normal at your rating.
- FEN Analyzer: one position instead of a whole game.