How to play
- Light moves first. Take turns placing a stone on any empty point of the 15×15 board.
- The first to line up five stones — across, down or diagonally — wins. A full board is a draw.
- On a touch screen, tap a point to preview your stone and tap it again to place it.
- Undo takes back your last turn. Games save automatically — leave and pick up later.
- Online: choose Online friend, create a game and share the code or link. Your friend opens it and plays from their own device.
- Keyboard: arrow keys move around the board, Enter or Space places a stone.