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Tic-Tac-Toe
Quick controls
- Click / tap
- Place your mark
- Arrow keys
- Move between squares
- Enter or Space
- Play the focused square
How to play Tic-Tac-Toe
Tic-Tac-Toe, also known as noughts and crosses or Xs and Os, is played on a 3×3 grid. Players take turns placing their mark, and the first to line up three in a row, column or diagonal wins. If all nine squares fill up first, it is a draw.
Play the computer on Easy, Medium or Unbeatable, or choose 2 players to share one device with a friend. X always moves first, so pick O if you want the computer to open. The scoreboard keeps a running tally for each opponent.
- Players 1 or 2
- Mode Against the computer, or two players on one device
- Plays on Phone, tablet and desktop
- Price Free, no sign-up
Tic-Tac-Toe rules
- Players take turns marking one empty square.
- X always moves first.
- Three of your marks in a row, column or diagonal wins.
- If all nine squares fill with no line, the game is a draw.
Controls
- Click / tap
- Place your mark
- Arrow keys
- Move between squares
- Enter or Space
- Play the focused square
- N
- Start a new round
- Opponent
- Easy, Medium, Unbeatable or 2 players
Tic-Tac-Toe questions
Can you beat the Unbeatable computer?
No. It searches every possible game, so the best you can do is a draw. Easy and Medium make mistakes you can punish.
What is the best first move in Tic-Tac-Toe?
A corner. It gives the opponent the most chances to go wrong; the centre is the safest reply.
Can two people play on one device?
Yes. Choose 2 players as the opponent and take turns on the same screen.