Powered by Stockfish
Play chess against
Stockfish.
One of the strongest chess engines in the world, tuned from gentle beginner to full strength. Pick a level, make your move, and see what it thinks.
21 strength levels
From level 0 for beginners up to 20, full-strength Stockfish. Give it anywhere from 0.1 to 10 seconds a move.
Live evaluation
An eval bar shows who's winning, and after each move you can see the line the engine expects next.
Hints and takebacks
Ask for a hint arrow, undo a mistake, flip the board, and copy the game as PGN or the position as FEN.