I should play at position 2,2 (bottom right) because it will complete a diagonal line of three X's from the top-right (0,2) through the center (1,1) to the bottom-right (2,2). This gives me an immediate win by creating a diagonal line. The other available moves (0,1 and 2,1) don't create winning opportunities, so this is clearly the optimal move to win as fast as possible.