Fellow King's Indian Attackers ... what set up and plan(s) do you use when Black responds with a kingside fianchetto?

... or to ask the more general question: what do you do if Black copies all your moves, breaking symmetry only after your first inaccuracy?

This puts a big pressure upon White and is a drawback of the KIA and similar systems.

Well, that's a fine question, but that's not the question I was asking.

I'm specifically asking how to play the KIA against a kingside fianchetto, which gets in the way of White's normal KIA piece attack. It would not be symmetrical, since I open 1.e4, so the fianchetto typically arises from a Sicilian move order.

In the Sicilian, the KIA is easy to avoid for Black if he doesn't play 2...e6.

The fianchetto is often accompanied with d6 and e5. Here a popular plan for White is c3, a3, b4. White may also head for f4 but this is often effectively countered with f5.

Being a Sicilian and e5 player, I never have to face the KIA with Black but I've occasionally used it with White against the French.

I am assuming that you start with 1.Nf3.

Your best bet is to transpose to a reti or try the king's english which is basically a dragon type structure vs the KID. If you play KIA moves by rote then your opponent can just copy you and there isn't anything you can do about that.

Two reti tries are 1.Nf3 Nf6 2.g3 g6 3.b3 and 3.b4 which change the way the game is played.

The king's english is a different setup:

You should be able to run this without memorizing anything but if you want to learn theory it will be easier for you to understand. Have fun.

It's often a good idea to read the thread before posting.

The KIA can be started with 1.e4 or 1.Nf3...

You may also want to review your previous posts and take your own advice...