Ultimate Tic-Tac-Toe

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If you're tired of standard Tic-Tac-Toe, give this one a try! The rules can be found at: https://en.wikipedia.org/wiki/Ultimate_tic-tac-toe In essence, your goal is to win three (local) games in a row/column/diagonal on the global board. Here's the catch: you're only allowed to play in the specific local board where your opponent last placed their piece. For instance, if you place a piece in the upper left corner of any small board, then your opponent must place a piece somewhere in the upper left game board on the global board. It's an exhilarating twist! The small 'x' and 'o' symbols are used to mark local boards, while the larger 'x' and 'o' symbols are for marking a local board as completed.