Mice are running around everywhere and it's your job to make sure they don't take your cheese!  Use your finger to slice the lines the mice leave in their trail as they cut across the cheese.  See a mouse popping out from inside?  Slice him up too, but be very cautious!  Don't slice a mouse with dynamite in its mouth or your cheese becomes fondue!  See how long you can keep your cheese for before the mice make it their dinner.