Looking at the board, I notice I already have 'O' symbols at positions 0,0 (top-left) and 2,0 (bottom-left). By placing my next 'O' at position 1,0 (middle-left), I will complete a vertical line in the leftmost column, giving me an immediate win. This is clearly the optimal move as it allows me to win in this turn rather than setting up for a potential future win.