Kings Indian Defense - why not take on e5

Why does white not take on e5 in the KID?

pawns on c4,d4,e4. Black thrusts a pawn up to e5 with d6 support.

Why does white not just dxe4?

Because it doesn't win a pawn.

After 9. ...Nxe4, there is a discovered attack on the White knight on e5. Regardless of how White responds, black has now regained the pawn and has an open diagonal for the bishop on g7. The open center diagonal will make it hard for white to develop his bishop on c1 now that the dark-squared B is directly attacking the b2 pawn. The capture on e5 is a positional error, white has allowed black to solve his biggest opening problems.

I think White can get a pretty good position by capturing the pawn. 

Any analyses out there?

Yes...Black plays 8...Qxd1 instead of Nxe4 and he is better. This is all theory. After 7.dxe5 White cant prove an opening edge no matter what.

Even then I say the game is pretty equal - so White CAN take the pawn without any major loss (which is the question we need to answer). 

In this position (ok white is supposed to trade queens before black can do it but we will arrive to this), black is supposed to be ok after Rd4 or simply Re8.

White achieved nothing with this way to play.

If u like white, ok fine, just play it! As black i am always happy when white "destroys" all alone his centre, losing all the spacial advantage given by black when playing king's indian.

Just an example where white is happy to take bishop pair but has a major problem with his king and e file...

I don't agree, for what it counts my opinion...

Having looked at games where Li Chao managed to prove an advantage i concluded that was mostly of lack in preparation from the Black side rather some new astonishing idea that put the line in some test. Furthermore, none of his opponents played the modern approach with Na6-Rd6 which is a bit easier to calm down Whites initiative.

As far as the option to do not trade Queens, i think its also insufficient option for White to play for an advantage. After Blacks, Nc6-Nd4 followed by f5 White has nothing tangible to play for.

I could only find two games of Li Chao's on my database. The thing that strikes me about the KID exchange is that if white, for want of a better word, is a 'stodgy' player, then he might probably opt for the London System earlier on, since after 1d4 Nf6 2c4 he is open to more enterprising systems of play by black - (OK you chess.com pedants out there 1d4 Nf6 2Nf3 g6 3c4 transposing..) This could be good news for black players looking for a decisive result after white has nudged his c pawn two squares forward. Nevertheless, it can't be too long before 'Winning With The KID Exchange' is published - which might sound like some manual for parents swapping each others children for a better life - to the uninitiated...

Has anyone mentioned Tal's old analysis of the KID Exchange? He viewed it as an overlooked possibility that hasn't been completely played out. Most modern GMs agree that Black has a comfortable game, but one which may not suit the average KID player. 

"To understand how dangerous exchange variation is , you have to understand the endgame.This line is not about opening preparation , at least not with the superificial way most see opening preparation." That is just an over-assumption. I just ran through the first game and the pawn that Black eventually takes is not even a passed pawn. It gets taken anyway. To think that a move so early in the game would result in a good END game is an over-simplification.

Those are great books, Pfren! I still use them in my lessons.

Edmar Mednis covers the KID exchange in 'From The Opening Into The Endgame'.

May I ask what if opponent plays e3 instead of e4 in the beginning and then dxe5?

Maybe black won't be blind and will watch what white will play...

Then , he/sche could prepare e5 with Nbd7, thought there are other ways to play.

Ty