Puckish: Even though general talk about cheating is OK on a public board, accusing a person of it is not. A private message to nabla would be best since there is no restriction like that in private chat.
(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)