AI Chess Analysis
Powered by Stockfish 19, the strongest open-source chess engine
What is Stockfish?
Stockfish is a free, open-source chess engine that consistently ranks as one of the strongest chess engines in the world. With an estimated Elo rating of over 3500, it plays at a superhuman level that surpasses all human grandmasters.
Elo Rating
Open Source
Chess Engine
How AI Chess Analysis Works
Position Evaluation
The engine evaluates the current position, considering material, piece activity, king safety, pawn structure, and more.
Move Calculation
Stockfish calculates millions of positions per second, looking many moves ahead to find the best continuation.
Best Move Selection
The engine returns the move that leads to the best position according to its evaluation function.
Each of these steps is explained in more depth, with examples, in how a chess move calculator works. For the history behind it, from Deep Blue to AlphaZero to today's neural networks, read how AI plays chess.
Understanding AI Evaluation
An evaluation of ±1.0 is roughly equivalent to having an extra pawn. ±3.0 is like having an extra piece.
Our AI Analysis Features
✓ Best Move Finder
Analyze any position and learn the strongest move
✓ Position Scanner
Analyze chess positions from screenshots or images
✓ Evaluation Bar
Visual representation of who's winning
✓ FEN Support
Import any position using FEN notation
Where to Run It
For one position, set it up in the best move calculator and Stockfish shows its choice with the line behind it. For a complete game, Pro members can paste the PGN into the chess analysis board, which grades every move and marks the ones where the evaluation swung.
If you want the engine with its depth and line controls exposed, use Stockfish online. To learn more about the engine itself, read our guide to the Stockfish chess engine.
Ready to analyze your games with AI?