Do you miss something on BrainKing.com and would you like to see it here? Post your request into this board! If there is a more specific board for the request, (i.e. game rule changes etc) then it should be posted and discussed on that specific board.
It's not impossible but since the BKR history is not stored, it would require a re-generation of all BKRs based on all finished games.
Advantage: BKRs would be correct at last [because due to database overhead, in some cases BKR was not recalculated after finishing a game].
Disadvantage: Some players could be disappointed that their real BKRs are lower than current values.
(Cacher) Si vous voulez jouer une partie contre un adversaire d'un niveau équivalent au votre, vous pouvez définir un BKR compris dans un intervalle lors de la création d'une nouvelle partie. Dès lors, personne ayant un BKR en dehors de cet intervalle ne pourra y accéder. (Katechka) (Montrer toutes les astuces)