Forum:Negating special summons.

When using solemn or any other such negate summon cards it cannot negate cards special summoned through an effect. Does this count Chaos Sorcerer? or Enishi, Shien's Chancellor? I am still confused on the negate special summon of solemn and such since I always treated it as it can negate anything. (Hence why it says it can negate so and so.