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.
jolat: The rules are more complicated, e.g. you must capture as many pieces as possible, etc. The current checkers model is not prepared for this rule, it must be reworked first.