I analyzed the board state and found that placing an 'O' at (2,0) creates a fork. With that move, you complete two potential winning lines simultaneously: one through column 0 (using the 'O' at (0,0) and the new 'O' at (2,0); the threat being completed by placing an 'O' at (1,0) on the next move) and one through row 2 (using the 'O' at (2,1) along with the new 'O' at (2,0); the threat being completed by placing an 'O' at (2,2)). This forces your opponent to block one threat, allowing you to win by completing the other line on your subsequent move. Hence, playing at (2,0) is the winning move.