Chess.com and Lichess both analyze games with an engine, but the analysis works differently on each. Three things set them apart: how many games you can analyze for free, which labels the moves get, and how accuracy is calculated. The facts about Chess.com and Lichess were taken from their own pages in October 2026.
| Service | Free analysis | Move labels | Accuracy |
|---|---|---|---|
| Chess.com | one full Game Review a day | ten | its own scale, CAPS |
| Lichess | 40 games a day on the server | three | the Lichess formula |
| chess.rodeo | no daily limit | ten | the Lichess formula |
Chess.com analysis
On Chess.com the analysis of a game is called Game Review, and its button appears on the game-over screen. A free account gets one full review a day. Chess.com’s help pages list unlimited Game Review for the Platinum and Diamond plans, and the description of Gold does not mention it. In Diamond the coach explains every move, and the plan also includes Insights, a section with statistics across all your games.
A review shows an evaluation graph, accuracy and move labels. There are ten labels: Brilliant, Great, Best, Excellent, Good, Book, Inaccuracy, Mistake, Miss and Blunder. Chess.com draws the boundaries between them with its own expected points model. In that model the winning chances depend on the engine evaluation and on the player’s rating, so the same move can get one label for a beginner and another for a master.
Lichess analysis
On Lichess every feature is free for everyone, and there is no paid plan with extras. The site’s code is open source.
A full analysis of a game is computed on the server, and the Lichess features page gives a limit for it: 40 games a day. The analysis board, where the engine runs in your browser, has no limit. In a game’s analysis Lichess shows accuracy and marks three kinds of moves: inaccuracy, mistake and blunder. It has no other labels.
Besides game analysis, Lichess has an opening explorer, one for all games and one for your own, and a Chess Insights section with statistics.
chess.rodeo analysis
Stockfish 18 analyzes the game in your browser at depth 15. There is no daily limit, and you do not need to sign up to analyze a game. With Pro you can raise the depth to 22 or hand the work to the server. Pro also includes the coach’s plan and drills built from your own mistakes.
Games come from both sites. One field takes a username, a game link or a PGN, and a username is looked up on Chess.com and Lichess at once. There is also a Chrome extension: it adds an “Analyze on chess.rodeo” button to the game-over screen on Chess.com and Lichess. The button imports the game and opens its analysis.
Moves get ten labels: Brilliant, Great, Best, Excellent, Good, Book, Inaccuracy, Mistake, Miss and Blunder. The set is the same as in Game Review, but the thresholds do not depend on rating. The opening is named from the ECO catalog.
Across several games the site builds Game Insights: results by opening and mistakes by game phase. It is free, but you have to sign in to open it.
How accuracy is calculated
Lichess and chess.rodeo calculate a move’s accuracy with the same formula: the evaluation before the move and after it is turned into winning chances, and the chances lost become the move’s accuracy. Chess.com has its own scale, CAPS.
On its accuracy page Lichess says there is no universally accepted way to calculate it: sites use different formulas, engines and analysis depths. So the percentages for the same game differ from site to site. Even Lichess and chess.rodeo can disagree. The formula for a move is shared, but each site evaluates the positions itself, and Lichess builds a game’s accuracy from the moves with weights, while chess.rodeo takes the plain average.
We compared the numbers on the same rapid games from Chess.com. For players under 800, Chess.com reports 66% on average and chess.rodeo 83%. For players rated 1800 and above it is 82% and 90%. The gap runs from 7 to 18 points, and the lower the rating, the wider it is. The table for every rating band is in the accuracy calculator. It makes sense to track your progress inside one system.
Which should you use?
If you play only on Chess.com and pay for Platinum or Diamond, the Game Review button is already on your game-over screen and you have no limit.
If you play on Lichess and three labels are enough for you, it is easier to analyze your games right there: 40 server analyzes a day come with every account.
chess.rodeo is useful if you play on both sites: games from Chess.com and Lichess get the same labels and the same accuracy scale. It also fits if one review a day on a free Chess.com account is not enough, or if you have tournament games in PGN.
Import your games from Chess.com or Lichess and see how the analysis compares on games you played.