'If you move a piece next to two or more Cookie Monsters simultaneously,'
Good question. Cookie Monster not so smart, does not know other Cookie
Monster gets awakened. All of the awakened Cookie Monsters leap on to the
moving piece and gobble up both it and each other;
at least, that's the rule that I think is consistent with the nature of
Cookie Monsters in this game (in real life, Cookie Monsters are erudite and
charming and well-behaved; the piece in the game was not intended as an
ethnic slur).