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How to play Pentago
Pentago combines placing marbles with rotating sections of the board. You play blue against gold. A turn normally has two parts: choose an empty square for your marble, then turn any numbered 3×3 quadrant by a quarter turn.
- You are blue and start; the computer is gold. Place a marble on an empty square.
- Then rotate any numbered 3×3 quadrant 90° left or right using its buttons. It need not contain your new marble.
- Five or more in a straight line wins. A line completed by placement wins immediately, before rotation. If rotation gives both sides a line, or the board fills without a line, it is a draw.
Tips for your next round
- Before placing, imagine the board after your planned rotation. Stones in a different quadrant may move into the line you need.
- Check the computer’s lines after the twist too. A rotation can create a winning line for either side.
Five or more in a row wins. A line completed by placement wins before rotation; a rotation giving both sides a line produces a draw.
Play free in your browser without an account. Your moves save in this browser during regular rounds. Sign in if you want to sync progress across devices. Very long rounds may stay in the current tab.