You must have rock smash and dynamo badge.Go to the cave that connect Vanderturf and Rustboro . Rock Smash one of the rocks.Then you'll get strength.
You get the hm strength and give it to one of your pokemon
If it is a round boulder then use strength, otherwise if it is a rock use rock smash.
there are no move tutors in Pokemon ruby yes there is there is one in fallabar town
where do you find strength in Pokemon blue where do you find strength in Pokemon blue
you go to the middle of writing on the wall move two steps right and 2 steps down and use strength
You teach an able Pokemon to use it, and when they do, if you see a boulder that is outlined darker than the other boulders, and is in more of an oval shape, if you click A, you should be able to move it if the Pokemon that you taught strength to is in your party
What I usually do is look through my PC for Pokèmon that look like they have "muscles". If you can't find any that way, go to Bulbapedia.org or Serebii.net and search for "Strength" and you will get a list of Pokèmon that can learn that move.
you have to use strength, which is an hm you get.
you can't catch darkrai in pokemon ruby unless you hack :)
Tentacool, Relicanth.
have a strong fire Pokemon or fire move
The move deleter, in Lilycove City.