The board consists of 9 TicTacToe boards. The game is played by two players, X and O, who take turns marking the spaces on each of the boards. The player who wins three of the boards in a horizontal, vertical, or diagonal row wins the game.
The box that a player choses to place it's mark will determine the board where the next player must play. For example, if player X places its mark in the top right box of a board, player O must play in the board that corresponds to the top right box of the main board.
If a player places its mark in a board that has already been won by their opponent, the next player breaks free and can play in any board.
If a player places its mark in a board that has already been won by them, the next player must play in a board of the player's choice.