grenv: Talk about putting the rabbit in the hat -- how could you have those point changes if the two players are evenly matched? (You must assume equal ratings to make such an assumption meaningful).
(hide) If you want to play a game with an opponent of a similar level, you can define a required BKR range for a new game invitation. Then nobody with a BKR outside this range will be able to see/accept it. (Katechka) (show all tips)