I haven't even tried! Come on don't be silly -believe me when I say that there are enough beginners who can make it work. My offering is kindergarten stuff. I am not claiming it to be tricky or anything (at least not in this post ;)). I really don't have the time to dream up something more wicked right now or to test it. Nevertherless this first idea has the merit of simplicity. I'll try to have a tested version published by play-off time but i really don;t expect it to be a proposition from Wittgenstein or something! Surely you can see that this is a simple algorithm being implied.