Stormerne: one problem I see with this innovation is that previous games will be rendered invalid by the new rules. I also like the fact that the rules on this site, unlike many others, are completely consistent with the contemporary source. Introducing a check-like construct would change the reconstruction we have here into a variant.
(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)