For those who don't know how to play: Just like in regular tic-tac-toe, the two players (X and O) take turns, starting with X. The game starts with X playing wherever they want in any of the 81 empty spots. Thereafter, each player moves in the small board corresponding to the position of the previous move in its small board, as indicated in the figures. If a move is played so that it wins a small board by the rules of normal tic-tac-toe, then the entire small board is marked as won by the player in the larger board. Once a player wins a small board or it is filled, no more moves may be played on that board. If a player is sent to such a board, then that player may play on any other board. Game play ends when a player wins the larger board or no legal moves remain, in which case the game is a draw.
I played. Your go.