I also never heard about bitcoin related chess game because pvp take a lot of time, I think majority of the people are interested in that kind of game which is purely based on skill and that is the reason it not have bigger community like luck based games.
It's a set of mind when you are playing with chess and if someone will create games like this and he will put bitcoin on it to bet's people and watch the two player playing chess , Then let's have some money by watching Yes you are right there many people will interested of this kind of game those who really love chess.