Tic Tac Toe Game: Noughts and Crosses Against the Computer
Tic tac toe is the first strategy game most people learn, and it still rewards a little forward thinking. Block, build, and watch the diagonals.
What is the Tic Tac Toe Game?
You play X and the computer plays O on a classic 3 by 3 grid. Get three of your marks in a row, column, or diagonal to win, and block the computer before it does the same. In the browser the board is fully clickable: tap a square to place your X and the computer answers straight away.
How to use it
- Choose who moves first.
- Click Start a Game.
- In the browser, tap a square to place your X.
- Block the computer's O while lining up three of your own.
Worked example
A sample game where X takes the centre, a corner, and the opposite corner wins on the diagonal.
How do you win at tic tac toe?
Place three of your marks in a straight line: any row, any column, or either diagonal. If the grid fills with no line of three, the game is a draw.
Frequently asked questions
Can tic tac toe always end in a draw?
With perfect play from both sides it does, which is why the fun is in spotting the opponent's slip before they spot yours.
What is the best first move?
The centre is the strongest opening square, since it belongs to four winning lines at once.