mook53lhd: what he is saying (I believe) is that if something is "up" with YOUR cache, it could be causing you to see something that "isn't really there". Or something that was there... A computer person (which I'm not) can probably explain better, but it isn't an uncommon problem.
(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)