trw wrote on 02/11/21 at 06:14:11:


Which eighth move for White are you referring to in this 8…Qe8 line?

That's funny, I was just looking at Kramnik-Radjabov 1-0 from the 2010 Chesspub archive.

Vigorito remarked 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 Na6 7. O-O e5 8. Be3 c6 (8... Ng4 is the main move). 9. d5 Ng4 10. Bg5 f6 11. Bh4 11... c5 12. a3 Bd7 ({It is not apparent that the bishop should hurry to this square. The flexible} 12... Nh6 {looks best, with a likely transposition to the game quoted above although White could also try}
13. Nd2 {here.}

What do people think of 13. Nd2? Ne1 seems to be the main move far and away in actual practice but I am not sure exactly what idea Vigorito had in mind when suggesting 13. Nd2.

Sinn wrote on 11/02/20 at 02:18:49:


It's definitely not refuted. I got the book from Burgess King's Indian for the Attacking Player in high school and started studying it. Looks like I've played it 5 times OTB and 3 times in correspondence. I think the critical line is 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 Na6 7. O-O e5 8. Be3 Ng4 9. Bg5 where you have to decide between .. Qe8 and .. f6.

Lol

I saw the bojkov videos, the perelshtein videos and read multiple articles I can probably answer to those question with a 2011 mind.

1) Personally I play it to avoid the forces variation of the exchange king's indian. As black you don't have to fear the exchange variation structure, it favors you. But if white manage to exchange everything thanks to Bg5 and Nd5 the game soon peter out to a draw. So with this move order : 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 0-0 6.Be2 Na6! 7.0-0 e5 Now 8.dxe5 dxe5 is far less of a drawing machine. 9.Bg5 is the main line of the original exchange variation with the idea 9...h6 ? 10.Bxf6 Bxf6 11.Nd5! that attacks both the bishop on f6 and the pawn on c7. But now the N on a6 protect c7 so you just gave up the bishop pair for nothing. So Bg5 is a mistake and you can't exchange all pieces.

2) I don't know about Qc2!? Stockfish gives a Nb4 Nc6 manouveur with approximate equality.

3) 8. ...Qe7!? is indeed interresting. I didn't know about that one. To me the Na6 variation is so solid of a system you can choose a lot of lines. People really sleep on this variation lol. Very hard to crack and yet not without venom thanks to the early c4 and e4 from white that created a hole in white structure. 9.Bg5 followed by Nd5 is probably the best way to try to crack this black formation but my stockfish always go back to equality in my limited research.

4) The main line was fine in 2011 ! lol But I don't have any ressources on the new one. I don't have chessbase articles or chesspub ones on this computer. I should dig in this direction since no book was written on the subject.

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 0-0 6.Be2 Na6! 7.0-0 e5 8.Be3 Ng4 9.Bg5 Qe8 10 c5 !?

was the only critical line back then. All the other ones were positional line with no real bite. But even this line wasn't able to crack the Na6 king's indian.

A recent game :

I still have a problem with it since I don't know if black can really play for a win in any of the variation that follow white agressive play.

What's the news ?

I'm interresteed in this variation but all the variation I can find date back to 2011 at least (the bojkov and Perelshteyn videos series).

They're informative and give good ideas but I wonder if they stood the test of time (almost a decades !)

Do black play still enter in the Na6 king's indian ? Was it refuted ? Tell me all about it please !

(And as a bonus question, do you personally play it ? What are your take on it ?)