Checkmate the opponent's king. The game ends when a king is trapped with no escape.
Click a piece to select it, then click a highlighted square to move. Green dots show valid moves. Red squares show capture options.
Castling: Move king two squares towards a rook — kingside (O-O) or queenside (O-O-O). King must not be in check or pass through check.
En Passant: If an opponent's pawn advances two squares from its start, you can capture it as if it moved only one square.
Promotion: When a pawn reaches the opposite end, choose Queen, Rook, Bishop, or Knight.
Beginner: Shallow search, makes basic mistakes. Great for learning.
Medium: Balanced play for casual and intermediate players.
Hard: Strong play. Challenging for most players.
Expert: Maximum AI strength. Recommended for experienced players.
New Game: Restart the game.
Flip Board: Rotate the board 180°.
Undo Move: Take back your last move.
Get Move Hint: Request an AI move suggestion.
Control the center, develop your pieces, and keep your king safe behind pawns. Use the evaluation bar to see who is winning!