How to play Tic-Tac-Toe

The objective

Your goal is simple: place Xs and Os and make a line of three. This guide uses the most common beginner-friendly rules. Families and groups may agree on variations before starting.

What you need

Paper and pencil, or a 3×3 board.

How to set up

1. Draw a grid with nine equal spaces.
2. Choose X and O; X normally starts.

How to play: step by step

1. Take turns marking one empty square.
2. Try to form three marks in a row, column, or diagonal.
3. Block an opponent who has two in a line.
4. A full grid without a line is a draw.

Beginner strategies

• Take the center when available.
• Look for a fork that creates two threats.

Common mistakes to avoid

• Missing diagonal threats.
• Continuing after the board is full.

Frequently asked questions