How to play
You move first. Place an X in an empty square, then the computer places an O. Connect three horizontally, vertically, or diagonally to win. A full board without a line is a draw. The computer looks for winning moves and blocks immediate threats.
Tap an empty square, or select one with the arrow keys and press Enter or Space. Wait for the computer to finish its turn before moving again.
P or Escape pauses and resumes. Pausing or restarting stops any pending computer move. Clicking outside the game or switching windows pauses automatically.