About this tool
Tic-Tac-Toe (also known as Noughts and Crosses) for two players on the same device. The X and O marks are randomly assigned each new game. Useful for a moment of relaxation, teaching children to play, sharing a quick game with someone, or having a classic always at hand without needing paper and pen.
How to use
- Start the game. X and O are randomly assigned.
- Players alternate, marking one square of the 3x3 board each turn.
- Whoever makes a complete row, column, or diagonal wins.
- If neither does, it's a draw.
Frequently asked questions
- Can I play against the computer?
- This version is only for two human players on the same device. For a version against the machine, consider dedicated apps.
- Is there an optimal strategy?
- Yes. With perfect play from both sides, Tic-Tac-Toe always ends in a draw. The first player has a slight advantage if the other one makes a mistake, and the center square is the best opening move. Strategies and strong points are well known and the game is considered mathematically "solved".
- Why are X and O randomly assigned?
- To be fair. In classical games, whoever goes first (X) has a minimal advantage. Randomising eliminates disputes about who starts, and in quick games the luck factor balances out over several rounds.