Thanks for the info. This is the second time I questioned about the algorithm applied for one of my game. The reason is that it appeared apparently the calculated result cannot be right.

Before this, I had sent another comment about one of my previous game. That one was more obvious just by a visual estimate. It’s so obviously incorrect. 

I am not sure if someone occasionally review some games and verify if the applied algorithm and its application is really working and accurate rather than a theory.