"I must say, these pokemon are much stronger than they look."
Richter:
Activate Sand Stream Ice Fang (Cubone) ~ Crunch (Chingling) ~ Ice Fang (Cubone)
King:
Sheer Force active Ice Beam ~ HP Grass ~ Ice Beam (All Cubone)
KO (Both): If Cubone Faints, which I doubt, redirect at Chingling.