complete a gym to be able to use it but i dont remember where it is given sorry
iron island
top of the tower in solocean
get the HM strength, and teach it to a Pokemon
I think it is strength
You have to get strength, and teach it to your pokemon. It is so easy a caveman can do it.
Solaceon town is the where the tower is located in which the player can find the strength HM. This town is located off of route 209 in Pokemon Diamond and Pearl.
near this house in the snow down from snowpoint
top floor on the lost tower
you mest get the hm strength.
You need the cobble badge.
First you find the HM in the lost tower next to the hollow tower. then you get the badge from canlave city and your Pokemon can use strength
Strength is located at the top floor of the lost tower.