I spent about a month studying Tic-Tac-Toe and developing the Windows-based software. Had a lot of fun doing this project as it gave me a greater sense for logic and a bit of an insight as to how the human mind thinks.

I tried many different protocols for AI. Including one that favors blocking the players move over winning the actual game itself. I was unable to produce anything successful with this. I think this is actually impossible, you just can't play the game with sole intentions of blocking. You've gotta play to win.

Interesting stuff - if it's your cup of tea.