thepenguin, a great job. However, one issue of convenience.

I lose the game (or win). I then get the cursor, but am unable to move. The game should automatically quit and return you to the main menu. At current, you need to exit manually, then it asks you if you are sure you want to exit a game that is already over.

(I was gone)

I did this on purpose. In fact, you can even save the game at this point. The reason I did it this way is so you can show people the final situation. This especially applies in a two player game because when checkmate occurs, most likely the other person will be like "WTF?!" and they would want to study the board. The winner might also go run around the room with the calculator

This looks amazing right now. I can't stop playing this

How about including an option to undo a move? Sometimes, I would like to replay a situation and see what happens if I had played a different move.

This looks amazing right now. I can't stop playing this

How about including an option to undo a move? Sometimes, I would like to replay a situation and see what happens if I had played a different move.

I also think it would be a nice idea to allow you to see what a different move does, however, an undo button would make the AI so much easier. I realize that not everyone would use it to cheat, but you have to admit, if you drop your queen on the 5th move, you're probably going to undo, and that's what makes my AI good.

I beat the AI in the current version once and lost all the other times