Here's my Tic-Tac-Toe game for TI-Concours part one.

It features two levels of AI (easy and hard), which you can use for either player, or both.

It also saves three games at a time, so if you quit from them early you can continue playing, or you can use them as replays for studying your moves, if you ever need to do that.

Here it is running on an 83PSE:

Wow, this is the best Tic-tac-toe game i've ever seen !
Congrats !

I like the selection for the 3 save games on the screen where you choose the AI. That is quite unique! Overall I like the overall design, and even though it's simple Tic-Tac-Toe, it's fun to play