Want to know where your game went wrong — for free? Our Game Analysis reviews any chess game with Stockfish, the strongest chess engine in the world, right in your browser. There is no sign-up, no paywall, and no daily limit: review as many games as you like, as often as you like.
Free, unlimited, and private
Most sites cap free members at one review per day. We do not. Stockfish runs directly on your own device, so nothing is sent to a server to be analyzed and there is no per-review cost to pass on to you. That is what keeps Game Analysis free and unlimited — and it keeps your games private.
How to analyze a game
- Load your games by entering your chess.com or lichess.org username, or paste the PGN of any game.
- Pick the game you want to study and start the review.
- Read the report — in a couple of seconds you get a full move-by-move breakdown.
You can even review games you play against our chess bots. Try it now — no account needed.
What you get in every review
- An accuracy score for both players, so you can see how cleanly you played.
- A label on every move — Brilliant, Great, Best, Inaccuracy, Mistake, or Blunder — so you instantly spot the turning points.
- A move-by-move walkthrough with the engine's best line at each step, so you know what you should have played.
- Coach Moji, our free AI coach, explaining why a move was good or bad in plain language.
Why review your games at all?
Reviewing your own games is the fastest way to improve. Spotting the blunder that cost you the game — and understanding the move you missed — sticks far better than memorizing openings. Because it is free and unlimited here, you can build the habit of reviewing every single game you play.
Ready to start? Analyze your first game for free and see exactly where you can improve.