Great game but some times it's impossible
In my testing there has always been a way to match it, can you describe any particular situation?
Sometimes I can't get number I needI think it's because there are only 5 places on the table instead of 6
In this situation try to get one of the dice to the edge, then the other one to the other side. Swap them and then keep moving the dice, which should theoretically give you the room you need.
