Play chess against the computer for free
Play against Stockfish directly in your browser. The engine loads when you press “Play” — the page loads fast and the engine only downloads when you need it.
Tips for playing against the computer
- Start at a low level (3-5) until you master the basic opening principles.
- Analyze your games: once finished, copy the PGN into the analysis viewer to understand your mistakes.
- Raise the level gradually: once you win 3 games in a row, go up a level.
The engine at maximum level (20) has an estimated ELO of ~3600, far above any human player. Don’t get discouraged if you lose at the higher levels.
Preguntas frecuentes
Can I play against the computer for free?
Yes, completely free. The Stockfish engine runs directly in your browser, no account and no download needed.
Which engine does this page use?
We use Stockfish 18, the strongest open-source engine in the world. It loads on demand in your browser so it doesn't slow down the page load.
How do I adjust the difficulty?
Use the level slider before starting the game. Level 0 is the easiest (it will make deliberate mistakes) and 20 is Stockfish's maximum strength.