A few years ago, I developed this checkers variant based on non-transitive relationships to help my students get some experience working with the concept. I'll talk more about the game and its development later, but in the meantime, here's a link to the webstore at Amazon.
For another example of non-transitive play, check this out. If nothing else, it will give you something to talk about if you ever meet Warren Buffet.
1 hour ago