I'm choosing the bottom-right corner (2,2) for two strategic reasons. First, this continues my diagonal from the center (1,1), setting up a potential winning diagonal from top-left to bottom-right. Second, playing in a corner maximizes my future winning opportunities as it opens pathways to win through either the bottom row or the right column. Since the opponent has only played in the top-left, this move doesn't require an immediate block, so I can focus on creating multiple threat lines for my next turn.