Looking at the current board state, I can see that I already have X's at the top-middle (0,1), middle-middle (1,1), and bottom-right (2,2) positions. By placing my X at position 2,1 (bottom-middle), I'll complete a vertical line of three X's down the middle column. This is an immediate winning move, as it creates a vertical line at positions (0,1), (1,1), and (2,1).