Where do you get ice beam not in the game corner for soul silver?

You can't get Ice Beam outside of the Game Corner in Soul Silver. It's a move that is only learned by trading.

Here's why:

* No trainers use Ice Beam: No wild Pokémon or trainers in the game use Ice Beam, so you can't learn it through battle.

* No TM for Ice Beam: There are no TMs for Ice Beam in Soul Silver.

* No breeding: You can't breed for Ice Beam.

Therefore, the Game Corner is the only place to obtain Ice Beam in Soul Silver. You need to trade for a Pokémon that knows it.