this is from naruto wiki
You must be registered for see links
Rock Lee*has demonstrated the ability to open the first six gates.[1]*Might Guy, who taught Lee the skill, is able to open all eight.*
Kakashi*can open at least one gate, as shown during Kakashi's*one-handed rock climbing*where a shot of his brain shows the relevant point activating,[2]*as well as in his usage of theFront Lotus*in the anime.[3][4]*Opening the gates is a difficult feat even for the most talented ninja, as Kakashi, a talented ninja himself, was surprised to find out that at that time, a 13-year old Lee could open as many as five of them.
I soloed the thread