From your very first game to a real challenge
Pick a level and play. The lowest levels are deliberately weak – they make the kind of mistakes beginners make, so new players and children can actually win and learn. Each step up plays more accurately, and from level 5 the computer plays at a set rating using Stockfish’s strength limiter (about 1300 to 2600 Elo). Level 10 is Stockfish at full strength: stronger than any human world champion.
Use Hint when you’re stuck (the best move is highlighted), Undo to take back a mistake, and Flip to view from the other side. Every rule is supported: castling, en passant, promotion, check, checkmate, stalemate and draws by repetition or insufficient material. Your game is saved in the browser, and you can copy it as PGN for analysis.
How to use
- Choose Against the computer or Two players.
- Pick a level (1–10) and your colour, then press New game.
- Tap a piece to see its legal moves, then tap the square to move to.
- Stuck? Tap Hint. Made a mistake? Tap Undo.
Ideas for using it
- Learning chess. children start at level 1 and move up after three wins.
- Quick game. level 4–5 is a fair fight for most casual players.
- Training. play level 7+, then copy the PGN to analyse your mistakes.
- With a friend. two-player mode on one tablet, board flips on request.
The 10 levels
- 1–2 (about 400–600): for children and complete beginners – often leaves pieces hanging.
- 3–4 (about 800–1000): casual players – knows basic tactics, still blunders.
- 5–6 (about 1300–1600): club beginner to average club player.
- 7–8 (about 1900–2200): strong club player to candidate master.
- 9 (about 2600): grandmaster strength.
- 10 (maximum): Stockfish without limits – far above any human.
Ratings are approximate and depend on your device: the engine runs on your phone or computer, not on a server.