I should place my X at position 2,1 (bottom-middle) to complete a horizontal line on the bottom row. This gives me three Xs in a row (positions 2,0, 2,1, and 2,2), resulting in an immediate win. The other valid moves don't result in an immediate win - placing at 0,1 would only block opponent's potential win, and placing at 1,0 doesn't create any winning line for me.