Tic-Tac-Toe
Make a line of three before your opponent does.
Make a line of three before your opponent does.
Learn how to play Tic-Tac-Toe and the strategy that means you never lose, then play the board above.
Be the first to place three of your marks in a row, horizontally, vertically or diagonally, on the 3x3 grid.
The centre touches four winning lines and corners each touch three, so opening in one of them is strongest. Edges are the weakest first move.
A fork is a position where you threaten two lines at once. Your opponent can block only one, so you win with the other.
If your opponent has two in a line, block the third square. If you have two in a line, complete it. Follow these and a played-perfectly game always ends in a draw.
Two players take turns marking squares on a 3x3 grid, one as X and one as O. The first to place three of their marks in a row horizontally, vertically or diagonally wins. If the grid fills with no line, the game is a draw.
Yes. Open in the centre or a corner, always complete your own three-in-a-row when you can, always block your opponent's, and look to create a fork that threatens two lines at once. Play this way and you will never lose.
No. With perfect play from both sides Tic-Tac-Toe is always a draw. The first player has an edge only if the second player makes a mistake.
A fork is a move that creates two winning threats at the same time. Since your opponent can block only one of them, the other completes your line and wins the game.