SL-Mark: The problem with the 4 player individual game is that the site hasn't got the options for multiplayer games yet. Way back I asked Patrick Chu at IYT about possibilities for a 4-player game and he said he would have to change too much in the workings of the game. IYT and BK are set for 2 player games. 2 vs 2 is still the same game, same board, only the moves change between the teamplayers.
(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)