AbigailII: Did you already see that rating calculation in some game site for say if is good or bad? I don't think so.

If i talked about that is because i know a game site where that system exists and it's very good. Besides, there's a similar system in Portuguese Checker Federation and in many others Checker Federations, so you say nonsenses.

With the knowledge i have, in this moment, about brainking and about many games that there're here, i can create a new account and i would be in first place in many ratings, playing 4 games with good players and winning, and then i would only play with weak opponents and would make 25 games, maintaining my first place. I'm not obligated to play against second person in rating, so it's easy to be in the top and maitain me there.

With the other rating calculation that i talked before, you will have many difficulties to do it.

Sorry, but you see BKR system in some sports? It would be funny see in Tennis, a new player make 4 games and with lucky (or not) win those 4 games and become the number one of the world ahahah...or see a new country like Timor make 4 games in football and be in first place in Fifa rating.

Like in everything in life, to be in the top is need "fight"...here is necessary make 4 games and then play against weak opponents. Great.