I just think there is a space for protocol that makes it possible without server.
Maybe so, but that isnt the normal jabber/xmpp way of doing things, you normally try to move as much complexity to the server as possible, plus the cheating thing is a big problem that as Andrew says just goes away without needing any addition complex protocol to try to detect it after the fact, personally I think its far better if its impossible to cheat in the first place as trying to detect it afterwards just seems a bit pointless to me, the game is over and the cheating has happened and the cheater has won.
Richard
