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Tic-Tac-Toe
Tic-Tac-Toe
Three in a row against a tricky AI. How long is your streak?
How to play
Take turns placing marks on a 3×3 grid. Three in a row, across, down or diagonal, wins. A full board with no line is a draw.
Against the AI, every win adds to your streak and the AI starts the next round. A draw keeps your streak and swaps who starts. One loss ends the run.
Easy makes plenty of mistakes, Normal a few, and Hard plays a full search with no mistakes at all. You can also play a friend on the same screen.
| Keyboard | Tab to a square, Enter to place. |
|---|---|
| Touch | Tap a square. |
| Mouse | Click a square. |
Tips & strategy
- Open in the center or a corner. Both leave you more ways to make a line than an edge does.
- Win with a fork: one move that makes two lines of two at once. The other side can only block one.
- Against Hard, perfect play from both sides is always a draw. Draws keep your streak, so play safe and wait for chances on Normal.
- If the AI opens in a corner, take the center. Answering with an edge instead is the classic way to lose.