Tic Tac Toe: play noughts and crosses against the computer

About Tic Tac Toe

Tic Tac Toe is the digital version of the classic noughts and crosses: a turn-based logic game where you play against the computer on a nine-square grid. You win by lining up three of your circles in a row, column or diagonal before it does.

It is a simple game with very short rounds and rules anyone can pick up in seconds, ideal for a quick break or to brush up on basic strategy. You play alone against the computer and, as the game itself says, if you lose or draw it is fine: the important thing is having fun.

It runs in your browser with no sign-up or download, and the control could not be easier: click the square you want to mark. If you want to play tic tac toe online, this is an instant option.

How to play Tic Tac Toe?

Tic Tac Toe is played in turns on a 3 x 3 grid. You place circles and the computer places its marks. The first to make a line of three wins.

Look at the board of nine empty squares.
Click the square where you want to place your circle.
Wait for the computer's move and plan your next one.
Try to line up three circles horizontally, vertically or diagonally.
If the computer completes a line or the squares fill up with no winner, start a new game and try a different strategy.

Tic Tac Toe controls

PC

Mouse: click the square where you want to place your circle.
No keyboard needed: the whole game is played with clicks.

Mobile

Tap the square you want to play with your finger; the board adapts to your browser screen.

Tips and tricks: Tic Tac Toe

If you go first, the center square or a corner gives you the most chances to build lines.
Before every move, check whether the computer has two marks in a line with an empty gap, and block it.
Look for double threats: a circle that creates two possible lines at once, so the computer can only block one.
If the game is heading for a draw, make sure you block every open line of your opponent.
Diagonals are easy to overlook: always check them.