Template:Tic-tac-toe

Play tic-tac-toe against the computer

Choose whether you want to play X or O (X moves first), and whether your opponent should play randomly or optimally.

You play:  X    O Computer plays:  at random
 optimally

Start a new game

The options above cannot be changed mid-game.

top-left cornertop edgetop-right corner

left edgecenterright edge

bottom-left cornerbottom edgebottom-right corner

Your move — you are X. Click any empty square.

You win! 🎉 Three Xs in a row. Press Start a new game to play again.

The computer wins — three Os in a row. Press Start a new game to try again.

A draw — every square is full and nobody has three in a row. Against optimal play, a draw is the best you can do (tic-tac-toe is a solved game).

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 4 7 1 2 3 1 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 2 5 9 1 2 3 4 5 6 7 8 9 1 0 0 1 0 0 0 0 0 0 0 0 0

Tic-tac-toe: perfect play always draws

X	O	X
X	O	O
O	X	X

A finished game with no three-in-a-row: a draw. When both sides play perfectly — take a winning move, block the opponent, make and block forks, then prefer the center and corners — every game of tic-tac-toe ends like this. Against a random opponent, the same strategy wins easily. An interactive version — choose X or O and how the computer plays — is available with JavaScript enabled.

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