Tic-Tac-Toe & Ultimate Tic-Tac-Toe Online
Play classic tic-tac-toe against an unbeatable computer or a friend, then try Ultimate tic-tac-toe: nine boards in one, with a smart computer.
How to play
- 1
Choose Classic 3×3 or Ultimate 9×9, then play against the computer (Easy or Hard) or with a friend on the same device.
- 2
Classic: take turns placing ✕ and ◯. Get three in a row — across, down or diagonally — to win. A full board with no line is a draw.
- 3
Ultimate: the big board is made of 9 small boards. The square you choose inside a small board sends your opponent to the matching small board for the next move.
- 4
Win a small board with three in a row to claim it. If you are sent to a board that is already won or full, you may play in any open board.
- 5
Win three small boards in a row on the big board to win the game. If no one can, it is a draw.
Tips
- Classic: start in the centre or a corner — these squares are part of the most lines.
- Classic on Hard is unbeatable: the best you can get is a draw.
- Ultimate: before you play, check which board you are sending your opponent to.
- Ultimate: avoid sending your opponent to a board where they can win immediately.
About this game
Tic-tac-toe — called “X and O” in many Indian classrooms — is the simplest strategy game: two players take turns marking a 3×3 grid, and the first to make three in a row wins. It is perfect for a quick break, and on the Hard level the computer never loses.
For a bigger challenge, switch to Ultimate tic-tac-toe, where nine small boards make one big board and every move decides where your opponent plays next. Play against an Easy or Hard computer or with a friend on one device. Legal squares are highlighted, the last move is marked, and you can undo moves.
Free to play · no sign-up · no ads · your best scores are saved only on this device.
Questions
Can I beat the computer on Hard?
In Classic, no — the Hard computer checks every possible game, so perfect play only gives a draw. In Ultimate the computer looks several moves ahead but not to the end, so a careful player can beat it.
What is Ultimate tic-tac-toe?
It is a bigger version played on 9 small tic-tac-toe boards arranged in a 3×3 grid. Where you play inside a small board decides which small board your opponent must play in next, so every move has two meanings.
What happens when a small board ends in a draw?
A full small board with no three in a row belongs to nobody. It cannot be used for the big-board line, and a player sent there may play in any open board.
Who moves first?
✕ always moves first. Against the computer you can choose to play ✕ (first) or ◯ (second).
Is tic-tac-toe good for children?
Yes. Classic tic-tac-toe teaches planning and turn-taking, and Ultimate is a fun challenge for older children and adults.
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