How to use it
A full engine analysis board
- Drag pieces to play any line; the move list keeps your variation.
- The evaluation bar and the top three Stockfish lines update as you move.
- Use the arrows or your keyboard (← →) to step through the line, and Flip to switch sides.
- Paste a FEN to set up any position and analyze from there.
FAQ
Frequently asked questions
Is this chess analysis board free?
Yes. The board and the Stockfish evaluation are completely free, with no account and no limits. The engine runs in your browser.
Which engine does it use?
Stockfish, the strongest open-source chess engine, compiled to run directly in your browser. You see the live evaluation, the best line and alternative moves.
Can I set up a custom position?
Yes. Paste any FEN string into the position box and load it, then play out variations from there.
Can I analyze a full game?
For a move-by-move report of a complete game with accuracy, blunders and brilliant moves, use the free game review: enter your Chess.com or Lichess username and we analyze your last games.
Is there a free online chess analysis board?
Yes. This analysis board is free and online: open it in any browser, play out lines and read the live Stockfish evaluation with no download and no account.
Do I need to install anything?
No. Everything runs in your browser. Nothing is uploaded or stored.
More free chess tools
Run a full free chess game review on your Chess.com and Lichess games, ask the next chess move calculator for the best move in one position, build your openings with the free opening repertoire builder, check a rating with the chess Elo calculator, sharpen your tactics with free chess puzzles, or open the chessdesk workspace.
Review your whole game, not just one position
Get accuracy, blunders and brilliant moves for your last games. Free, with your Chess.com or Lichess username.
Try the free game review