how to crush the KING'S INDIAN DEFENCE?


You can't crush the KID. It is a double edged opening and requires accurate play from both sides. If White doesn't play accurately, then he is the one getting crushed by the KID.

Mr Avia,there are a lot of interesting plans for white against KID. My favourite one is Petrosian plan with 1)d4 Nf6 2) c4 g6 3) Nc3 Bg7 4) e4 d6 5) Nf3 00 6) Be2 e5 7) d5,closing centre and white has a small edge due to the fact that his game on queenside should arrive first than counterplay of black on kingside. Some players with white could search for 4 pawns variations,but i think that in this variation only white risks to be crushed. All the best!
This is one of my favorite openings, for both sides. When it comes down to it, the KID is completely dependant on preparation. What i would recommend is Kasparov`s KID book if you`re really serious, and for practice play against the computer on a 7-8 rating on chess.com, but set the opening position to one of the lines of the KID (saimisch, main line, 4 pawns, orthodox etc.). Do this with both sides for each position and play maybe 3 or 4 games like this a day. They don`t have to take up your time but don`t make them blitz. Take 20 minutes to do one. Also there`s a lot of ideas in the KID, watching and anayzing master games can be very helpful (Kasparov is my favorite but Fischer is probably more educational, his ideas are cleaner). Happy hunting!

The KID is tough. I still haven't figured out a great way to attack it. Right now, I'm studying the Four Pawns Attack, but haven't had a chance to use it in a game.

This is how Kramnik crushed Kasparov and caused him to give up on the King's Indian Defense.
https://www.chessgames.com/perl/chessgame?gid=1070932
@15
"If you aren't 2700, you can't crush the KID."
++ If you aren't 2700, you can't defend the KID.
As Bronstein said: 'King's Indian Defense is riskier for black than King's Gambit for white'.

Bronstein said that loooong ago. It's easier for black to play the kingside attack than white's queen side play in my experience.

@15
"If you aren't 2700, you can't crush the KID."
++ If you aren't 2700, you can't defend the KID.
As Bronstein said: 'King's Indian Defense is riskier for black than King's Gambit for white'.
I bet that Bronstein said that long before Kasparov revitalized the opening.
Nowadays it's out of fashion once again, but it only needs some new ideas by some young strong players.

@15
"If you aren't 2700, you can't crush the KID."
++ If you aren't 2700, you can't defend the KID.
As Bronstein said: 'King's Indian Defense is riskier for black than King's Gambit for white'.
I bet that Bronstein said that long before Kasparov revitalized the opening.
He might also have meant to suggest that the King's Gambit isn't as risky as is often supposed. It was, after all, a favorite of his (as was, of course, the KID).