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Chess Analysisin Your Browser
Deep analysis powered by Stockfish. No installation. No registration.
Visualize Every Move
Interactive win probability charts track evaluation changes throughout your games
Everything You Need
Professional chess analysis tools, right in your browser
- Stockfish Engine
- Professional-grade position evaluation with Stockfish 16. Real-time analysis with clickable best moves and principal variations.
- Opening Detection
- Real-time opening detection with ECO classification from our database of 3,546 openings. View variations and next moves.
- Automatic Branching
- Explore variations without losing your analysis. Original lines are automatically saved as branches for easy comparison.
- Win Probability
- Interactive charts track evaluation changes throughout the game. Identify blunders and brilliant moves instantly.
- Chess.com Game Import
- Import your entire Chess.com game history instantly. Browse games by month, open any game for analysis with one click. Also supports PGN import with complete move history tracking and shareable URL encoding.
Try It Out
Click any game below to see the analysis in action
London1851
The Immortal Game
Adolf AnderssenvsLionel Kieseritzky
The archetypal romantic king hunt: Anderssen gives up both rooks and the queen to deliver a picturesque mate.
Third Rosenwald Trophy1956
Game of the Century
Donald ByrnevsRobert James Fischer
A 13-year-old Fischer detonates …Na4!! and a queen sacrifice; one of the most famous tactical displays ever.
Hoogovens Group A1999
Kasparov's Immortal
Garry KasparovvsVeselin Topalov
24.Rxd4!!, 25.Re7+!!, a king hunt, and a glorious finish—many vote this the greatest modern game.
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