Nothingness: There are players rated less than expert that know how to win efficiently with KBN vs K advantage, but I don't know about c-class. The rule is not for the rating level but for the skill in advancing the position. If a player of whatever ranking cannot advance the position, a draw is an appropriate outcome.
(hide) You can use some of the simpler HTML on your messages or, if you're a paying member, can also use the Rich Text Editor. (pauloaguia) (show all tips)