I can't see this problem as easy as you can. It drives me nuts thinking about that such a rotter is fooling me.
I pay at BK for playing BG against human beings. Playing against bots I can do this on my PC with GNU, Jellyfish whatever for free.
I'm still thinking more and more if BK is a good place for playing BG. The long possible delays between the moves are provoking any kind of fraud or foul play.
I've to face so often that somebody delay immediately the game if the one is on the loosing street. For me this is also a kind of foul play.
At the moment I think it's better to play BG with the short time limit of not more then 3 minutes.
Well, still frustrated about the way it goes here.