Chess Analyser
Free chess game analyser online - analyze chess position and moves with Stockfish 17
Analyze Chess Position Online
Our chess position analyser breaks down every move in your game. Paste your PGN and get instant feedback on each position with best move suggestions.
Chess Board Analyser
Powered by Stockfish 17, the strongest chess AI. Evaluates positions at depth 18-30 for grandmaster-level analysis on every move.
Analyze Chess Moves
See move classifications: brilliant, great, best, good, inaccuracy, mistake, and blunder. Understand exactly where you went wrong.
Chess Game Analyser
Upload games from Chess.com or Lichess. Get accuracy scores for both players and detailed move-by-move breakdown. Then play chess against computer to practice.
Free Chess Analyser
No downloads, no registration required. Analyze chess games free online directly in your browser. Also try our chess puzzles to sharpen tactics.
Chess Move Analyser
Find the best continuation for any position. Our analyser shows you what you should have played and calculates expected points lost.
Frequently Asked Questions
How do I analyze a chess game?
Copy your game's PGN from Chess.com, Lichess, or any chess platform and paste it above. Our analyser will evaluate every move using Stockfish 17.
What is PGN format?
PGN (Portable Game Notation) is the standard format for recording chess games. Export from Chess.com via Share → PGN, or from Lichess via download button.
What does the accuracy score mean?
Accuracy measures how close your moves were to the best computer moves. 90%+ is excellent, 80-90% is good, below 70% needs improvement.
Is the chess analyser free?
Yes! Our chess game analyser is 100% free. Analyze unlimited games with Stockfish 17 - no account or payment required.