There are no moves in Soul Silver that allow you to climb walls. You will need to use other methods to reach areas that require climbing, such as:
* Using ladders: These are found in specific locations within the game.
* Flying: Once you obtain the Fly HM, you can fly to locations you have already visited.
* Strength: This HM allows you to move large boulders, potentially opening up new paths.
* Cut: This HM allows you to cut down trees, also opening up new paths.
If you are trying to reach a specific area in the game and are unsure how to get there, feel free to ask and I'll be happy to help!