We already have a chess game, right? Would it be too hard to expand it so it can be played multiplayer on Mathsisfun? The reasons you might have already guessed: it's fun and encourages logical development, especially for youngsters. ?
I think thats a great idea.
I love pi.
I support this, but I am still unsure about it.
A system could be made so that you could face only a player on a certain level, eg. If you are a beginner, you could face other beginners. Hey, it could even become a mini-RPG.