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Rules of Ultimate Tic Tac Toe
Ultimate Tic Tac Toe is played on a 3x3 grid of smaller Tic Tac Toe boards.
The goal is to win three small boards in a row, column, or diagonal, just like in regular Tic Tac Toe.
Players take turns placing their marks (X or O) in the smaller boards.
Each turn, a player must play in the corresponding smaller board that matches the position of the last move.
For example, if a player places their mark in the top-left cell of a smaller board,
the next player must play in the top-left smaller board.
If a player wins a smaller board, it is marked as won and no further moves can be made in that board.
The first player to win three smaller boards in a row, column, or diagonal wins the game.