Tic-Tac-Toe

How to play

The three-in-a-row classic, played against an AI that never makes a mistake. You're X, the AI is O — the best you can do against perfect play is a draw.

Rules

  • Click any empty cell to place your X.
  • The AI responds instantly with an O.
  • Get three of your marks in a row — horizontally, vertically or diagonally — to win.
  • A full board with no winner is a draw.

Tips

The AI plays perfectly, so it can never be beaten — only drawn. Take the centre first if it's free, then a corner, and always block an AI line of two before it becomes three.