Anything with high attack, and a good physical move.
Examples: Flareon/Earthquake, Dragonite/Fly, Tyrannitar/Crunch.
Crunch is the BEST MOVE ever when you're trying to beat psychics.
Strategy: JUST BOMB HER POKEMON WITH PHYSICAL ATTACKS! HI-YAH!
If you mean how to consider yourself as beaten the kanto region in pokemon soulsilver, then you should find zapdos,moltres, and articuno. You should also beat Red (Ash Ketchum). Once you do that, you can catch Mewtwo.
If you mean Clair, then you should probably use ice type pokemon.
He disappears until you beat the Pokemon league again.
beat the 8th gym
the s.s. anne
you get it after you beat Sabrina
beat gym leader
what do you mean
beat the league
after you beat whitney.
Earn the national Pokédex, go to the mountain where Red is and beat him.
Well I have pearl. But when I went to one gym she was not there because I had to beat a different gym leader. So you might want to try beating a different Pokemon gym leader........ Hope I helped..... Babygirl14000