I'll take the top-left corner (0,0) as my second move. This is a strong strategic position that gives me multiple potential winning paths. By placing my X here, I create two potential winning lines - one along the diagonal from top-left to bottom-right, and another along the left column. Taking a corner also helps control the board and limits my opponent's options. Since they've placed their O in the middle-right position, they don't currently threaten any immediate wins, so I can focus on building my own winning opportunities.