Ultimate Tic-Tac-Toe

Nine small contests, composing one larger argument.

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Fig. 1. The square chosen in one small board determines the small board in which the next player must move.

How the board answers back

  1. 1

    Win a small board in the familiar way: three of your marks in a line.

  2. 2

    The square you choose sends your opponent to the corresponding small board. The upper-right square sends them to the upper-right board.

  3. 3

    If that destination has already been won or filled, your opponent may choose any open board.

  4. 4

    Win three small boards in a line to win the whole game.

A board for two

Begin a private game

You will play X. A six-digit PIN will admit one friend as O; after that, the game is closed to new players.

Take your place

Join a friend

Enter the PIN from your invitation. This browser will remember which mark is yours.