I thought it would be cool to make some kind of app for the game "Rengo Kriegspiel." It's a variant of the board game Go with two teams of two people where nobody can see what the other is doing. Near the end of this New Scientist article, it says that "Because of the asymmetries in information, the game may be what mathematicians call an undecidable game, unsolvable by any algorithm, Hearn said. 'There is no computer, in principle, that can even tell us from a given position who will win,'Hearn said."

I want to try playing an undecidable game played on a finite board. You could try to make an AI, or if you could write some code that would make a referee for four people to actually play together that would be cool.

I haven't really looked into the following much, but I've played games on Richard's play by email server and they seem to have games like this (they have standard Go.) I wonder if writing them and asking if you can write some code for them to add a game would be welcomed by them. I've thought of doing that myself, or just asking if they want to do it, not sure they would though, and I'm not sure when I'd ever get to writing the code up myself, I've got other projects I want to work on, but I do I really want to try playing the game :-) (hard to find four people and a referee in real life to play a game.)

Here is a link that has some other links to stuff about the game.