Analysis board
Board
How to use it
- Drag or click pieces to play moves. Playing a different move from an earlier position creates a variation.
- Use ← → to step through moves. While the board, the move list or the buttons have the focus, ↑ ↓ jump to the start or end and f flips the board. On the board, the arrow keys move between squares and Enter picks a piece up or puts it down.
- Stockfish runs entirely in your browser and shows the three best lines. Click a line to play its first move.
- Imported PGN keeps its variations; comments are left out.
- Link to any position with
/analysis/?fen=<FEN>or a game with/analysis/?pgn=<moves>(add&flip=1for Black's view).
Engine: Stockfish 19 (lite WebAssembly build via Stockfish.js), GPLv3 — source and licence.