Tic Tac Toe guides

Everything about the world's favourite three-in-a-row game: the rules, winning strategy, the maths behind the inevitable draw, and new ways to play.

Strategy

How to win at Tic Tac Toe: 7 strategies that actually work

Seven practical Tic Tac Toe strategies, from the corner opening to the fork, with board diagrams showing exactly where to play to win more games.

4 min read
Strategy

How to never lose at Tic Tac Toe

An eight-step priority list that guarantees you never lose a game of Tic Tac Toe, plus the correct replies to every opening and the traps to watch for.

3 min read
Rules

Tic Tac Toe rules: how to play, explained simply

The complete rules of Tic Tac Toe (Noughts and Crosses): the board, taking turns, the eight winning lines, draws, who goes first, and common questions.

3 min read
Strategy

The best first move in Tic Tac Toe: corner, centre or edge?

We analysed every Tic Tac Toe game to compare the three opening moves. The answer depends on your opponent, and the corner wins most often in practice.

3 min read
Strategy

Tic Tac Toe traps and forks: how to set them and how to block them

The fork is how almost every Tic Tac Toe game is won. Learn the four classic fork patterns with diagrams, and the technique for stopping a fork before it happens.

3 min read
The app

How to beat the computer at Tic Tac Toe: Easy, Medium and Hard

How each computer level in TicTacToe really plays, your exact winning chances against it, and a step-by-step plan to beat Easy and Medium and hold Hard to a draw.

4 min read
Maths

Why Tic Tac Toe always ends in a draw

Tic Tac Toe is a solved game: perfect play always draws. Here are the numbers behind it (255,168 games, 5,478 positions) and why the first player can't force a win.

3 min read
Maths

How a computer plays perfect Tic Tac Toe: minimax explained

A clear explanation of the minimax algorithm, with alpha-beta pruning, using Tic Tac Toe as the example, plus how the TicTacToe app's Hard level uses it.

4 min read
History

A short history of Tic Tac Toe

From three-in-a-row grids scratched in Roman stone to one of the first video games ever made, the story of Tic Tac Toe, Noughts and Crosses, and its many names.

4 min read
Variants

Tic Tac Toe variants: 4×4, Ultimate, Misère and more

Bored of draws? Eight Tic Tac Toe variants to try, from Ultimate Tic Tac Toe and Misère to 3D Qubic and the number game that is secretly Tic Tac Toe.

4 min read
Family

Tic Tac Toe for kids: what it teaches and how to make it fun

Why Tic Tac Toe is a great first strategy game for children, the skills it builds, how to teach it step by step, and how to keep it fun when they keep losing.

3 min read
Two players

Playing Tic Tac Toe with a friend: formats, handicaps and house rules

How to make two-player Tic Tac Toe fair and exciting: who starts, match formats, handicaps for uneven players, and house rules that break the endless draws.

3 min read