nabla: I've played a game and used the checkers from an other board so we've had different colour for the 'racers'. I definately would suggest that well.
(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)