How to play
- Tap one of your pieces to see where it can go, then tap a highlighted square. Dots are moves, rings are captures.
- Only legal moves are allowed, so you can't leave your king in check. Castling, en passant and pawn promotion all work.
- Checkmate wins. Stalemate, not enough pieces to checkmate, the same position three times, or 50 moves with no capture or pawn move are draws.
- You can offer a draw, ask to take back a move, or resign. Players switch colors for each rematch.