Get the Rock Smash TM in Pokémon Gold and Silver

It is very easy to get the Rock Smash TM in Pokémon Gold and Silver. This article will explain how!

Steps

Get to Goldenrod City.
Defeat the gym leader, Whitney. She has a level 18 Clefairy and a level 20 Miltank.
Go inside the house that is either next to or above the gym, and there should be two girls inside.
Talk to the girl at the table, and she should give you the Squirt Bottle.
Go north and when you reach National Park, go east to Route 36. Keep on following the trail until you see an odd tree in the way.
- You can also reach Route 36 by going east nearby the gate leading to National Park on Route 35 and using Cut on the tree by the Bug Catcher trainer.
Use the Squirt Bottle on it and a level 20 Sudowoodo will attack you.
Battle the Sudowoodo.
- You don't have to capture the Sudowoodo. Just make sure that you somehow manage to make it go away.
- There is only one Sudowoodo in the game unless you trade with someone, so that's basically the only time you get to see one. Be sure to save before battling it, so you can restart if you fail by being defeated or by defeating it (if you wanted to catch it).
- Sudowoodo is a Rock type, not a Grass type (even though it looks like a tree).
After defeating, capturing, or fleeing from the Sudowoodo, follow the trail on the right and talk to the chubby guy that is closest to you. He will then give you the Rock Smash TM.

Get to Goldenrod City.
Go to the Goldenrod Department Store.
Go to the fifth floor of the building, which is the TM Corner.
Buy the TM for P$1000 from the shopkeeper there.
- If you don't have enough money, go find some trainers that you haven't fought yet or sell some items that you don't need.

Remember to save after you've gotten the TM (unless you want to start over again).
Stock up on Poke Balls if you plan on catching the Sudowoodo.
If you already have the HM Fly, then you can just fly to wherever you need to go (you can only fly to cities, not routes).
Try getting at least three Pokémon to level 20 before battling Whitney.

Rock Smash is a TM in this game (not an HM like in the newer games), so teach it to a Pokémon wisely.
When fighting Whitney, avoid using Fire, Bug, or Flying-type Pokémon, since her Miltank knows the Rock-type move Rollout, a 5-turn move that gets stronger with each turn.