Pick your challenger

Five Stockfish engines — from a friendly sparring partner to no-mercy full strength — all running right in your browser.

Difficulty

Play as

Variant

Types by time control

How much time each player has on the clock.

  • Classical90 min+

    Players get 90 minutes or more. This allows deep, careful thought.

  • Rapid10–60 min

    Games last between 10 and 60 minutes per player.

  • Blitz≤ 10 min

    Each player has 10 minutes or less. Moves must be fast.

  • Bullet< 3 min

    Players get less than 3 minutes total. This format requires lightning-fast reactions.