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  1. Home
  2. Games
  3. Tic-Tac-Toe
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Tic-Tac-Toe

Classic tic-tac-toe game with AI opponent using minimax algorithm. Three difficulty levels: Easy, Medium, Hard

The classic X-and-O showdown, right in your browser. Challenge a friend or take on the computer, games last under a minute, making it perfect for a quick break.

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Tic-Tac-Toe: a worked example

You are X, the centre and a corner are yours, and it is your move.

Board (your move = top-right)

X | . | →X
. | X | .
. | . | O
Tic-Tac-Toe produces

Result

You now threaten two lines at once, O cannot block both. Forced win.

Creating a "fork", two simultaneous winning threats, is the core tactic, because the opponent can only block one. With perfect play tic-tac-toe is always a draw, so a win only happens when the opponent fails to block a fork like this one.

What is Tic-Tac-Toe?

The classic X-and-O showdown, right in your browser. Challenge a friend or take on the computer, games last under a minute, making it perfect for a quick break.

How to use

  1. 1Choose to play against another person or the AI.
  2. 2Take turns placing your mark (X or O) on the 3×3 grid.
  3. 3First to get three in a row, horizontally, vertically, or diagonally, wins.

Key features

  • Two-player and single-player modes
  • AI opponent with adjustable difficulty
  • Win/loss/draw score tracking

Frequently asked questions

Can two people play on the same device?

Yes. Two-player mode lets you take turns tapping the same board.

Is the AI beatable?

On easier settings, definitely. On the hardest setting, the best you can do is a draw, just like the real game.

Private by design

The game runs entirely in your browser. No account is needed and no gameplay data is collected.