Chessigma is a free chess analyzer powered by Stockfish 17. Enter your Chess.com or Lichess username, pick a game, and get a full chess analysis report in seconds. No daily limit, no premium tier, and no signup required to start analyzing.
Every move gets a grade from Brilliant to Blunder based on centipawn loss. The report shows your overall accuracy, identifies the opening you played, highlights your best and worst moves, and gives you the engine top choice for every position. It is the same kind of free chess game review that Chess.com locks behind a premium subscription.
The chess game analysis breaks down every move you played. Each move gets a quality grade and a centipawn loss value so you can see exactly where you gained or lost advantage. The evaluation graph plots the entire game so you can spot the turning points at a glance.
You can step through the game on the chess analysis board, toggle engine lines, and explore the variations you missed. Openings are identified automatically so you know what you played and where you left theory. The chess game analyzer also highlights your best move and your biggest mistake, making it easy to focus your review.
Type your Chess.com or Lichess username above and your recent games load automatically. If you have games saved as PGN files, paste the text or upload the file directly.
On Chess.com, free users get one game analysis per day and need a Diamond membership for full engine review. On Chessigma, you can review every game in your history with full Stockfish analysis for free. Blitz, rapid, bullet, classical. No restrictions on time control or number of games.
Yes, completely. There is no paywall and no daily game limit. You can create an account to save your usernames and access puzzles, but it is not required to analyze. The chess analysis is powered by Stockfish 17 and runs directly in your browser, which is how we keep it free for everyone.
Chess.com gives free users one game review per day and locks full engine analysis behind a premium subscription. Chessigma removes those limits. You get unlimited game reviews with the same Stockfish engine, full move grading, accuracy scores, and a complete report every time.
Every move gets a grade from Brilliant down to Blunder based on centipawn loss. You also get an overall accuracy percentage, the opening you played, an evaluation graph that shows how the advantage shifted, and the engine best move for every position. You can explore all of this on the analysis board.
Not to analyze. Type your Chess.com or Lichess username, or paste a PGN, and you can start right away. Creating an account lets you save your usernames, track multiple players, and access puzzles, but the analysis works without one.
Chess.com, Lichess, and any standard PGN file. For Chess.com and Lichess, enter your username and your recent games load automatically. For PGN, paste the text or upload a .pgn file.
Chessigma uses Stockfish 17, the strongest open-source chess engine in the world. It is the same engine used by every major chess platform. The analysis quality is identical to what you would get from any top chess analyzer.
