Funny and amusing situations...

+1! But that's about checkers, not Stinger :) Someone even showed me the "Petrov's Triangle"... I don't remember how to set it up, but I remember the term.

Vik has already explained. It's the opposite for me: when we played checkers in school, we quickly figured out how to avoid long endgames by determining when there's a win and when there isn't. However, due to the lack of internet, we didn't know what it was called.