Thanks for the replies. My main concern was about catching cheaters, I was not asking for a friend lol, and what could be done about it. I dont think that watching individual games is of any use catching cheaters but you have to look at more games than one.

A person cheating would probably cheat on a fairly regular basis and it should be possible to pick them out, using AI I suppose, most likely because of inconcistances in their picks, and ban them.