I need to play at 0,1 (top-middle) for two important reasons:

1. Defense: This blocks my opponent's immediate win along the top row (0,0-0,1-0,2). If I don't block this, they will win on their next move.

2. Offense: This position also creates a potential winning opportunity for me along the middle column (0,1-1,1-2,1), where I already have a piece at 1,1.

While other moves like 2,1 (bottom-middle) could create offensive threats, the defensive priority is higher in this situation. By playing 0,1, I both prevent an immediate loss and set up a potential win for my next move.