The KID is my defense of preference as Black so many thanks in advance for advice.
Korchnoi-Kasparov Amsterdam 1991, KID Orthodox, Aronin-Taimanov (E99) 0-1
http://www.chessgames.com/perl/chessgame?gid=1070534
#1: Analysis appreciated after 14. Nd3. I mean analysis as in specific lines.
At 12. Bf2, we are well within mainstream KID theory.
At 15…h5, this is the only game in my pathetic 500,000 game database with this line. However, Kasparov was considered one of the leading experts of KID; Tebb once noted that he was regarded as the world’s leading expert.
In this game, wilfried-Quirine, Game 2013931, the position was reached through transposition.
Playing through various lines of engine analysis of the wilfried-Quirine game, Black certainly looks to be lost by move 23 regardless of the engine evaluation telling me otherwise. I did make some improvements (or attempted to) to some of the recommended lines. Once I clean up my analysis, I’ll post my lines.
#2: At what point is black lost? Does white allow 14. c5 too easily? I have determined 18…g3 in the wilfried-Quirine game as the probable losing move. However, Black may be in serious difficulty in the lines after 18…a6, possibly even losing.
If this is the case, improvements possibly may be found between Black’s moves 13-15. 14. c5 may be deterred at least temporarily by moves such as b6 and c5, either of which may have been an improvement on 13…Nf6.
[Back to Korchnoi-Kasparov:
According to kewmschess: “In The Complete King's Indian, Keene and Jacobs quote Kasparov as saying that 21. Nb4 was the critical mistake. Instead, Kasparov suggests 21. a6! Bxa6 22. Nb4 Bc8 unclear. Even in that line, Black gets a very dangerous attack. It's easy to see why no one else has tried 14. Nd3.” Fritz seems to think White better until white’s 23rd move; there may have been a few inaccuracies up to that point.]
I apologize that I have not really pruned the lines very much yet. Here I am looking for a concrete defense after 18. Nb5. 18…Ne8 deserves consideration if anybody wishes to check those out.
[Event "Alpha 6x6 3/33"]
[Site "http://www.redhotpawn.com"]
[Date "2006.04.24"]
[Round "3"]
[White "wilfried"]
[Black "Quirine"]
[Result "1-0"]
[ECO "E99"]
[Annotator "Yuga"]
[PlyCount "81"]
[EventDate "2006.??.??"]
1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. Nc3 d6 5. e4 O-O 6. Be2 e5 7. O-O Nc6 8. d5
Ne7 9. Ne1 Nd7 10. f3 f5 11. Be3 f4 12. Bf2 g5 13. Nd3 Nf6 14. c5 Ng6 15. a4 h5
16. Rc1 Rf7 17. Qc2 g4 18. Nb5 (18. cxd6 cxd6 19. Nb5 Ne8 20. Qd1 (20. Qd2 a6
21. Na3) 20... a6 21. Na3 Qg5 (21... g3 22. hxg3 fxg3 $16) 22. Qd2 (22. Nc4 g3
$15) 22... Nh4 (22... gxf3 23. Bxf3 h4 24. Kh1 (24. Nc4 h3) 24... h3 25. gxh3
Bxh3 26. Rg1) 23. Ne1 gxf3 24. Bxh4 Qxh4 25. Nxf3 Qd8 26. a5 b5 27. axb6 Nf6 (
27... Qxb6+ 28. Kh1 Rb7 $14 29. Nc4 Qb4 30. Qd3 Bh6)) 18... g3 (18... a6 19.
Na3 h4 $14 20. cxd6 cxd6 (20... g3 21. dxc7 gxf2+ 22. Nxf2 Qd6 23. Qb3 Nd7 24.
a5 Ne7 25. Nc4 Qg6 26. Rfd1 Kh7 27. Bf1 Ng8 28. Qc3 Nh6 29. d6 Qe6 30. Qd2 Bf6
31. Qd5 Qe8 32. Nd3 h3 33. Nc5 hxg2 34. Bxg2 Nxc5 35. Qxc5 Bd7 36. Nb6 Rc8 37.
Qd5 Rg7 38. Rc2 Bc6 39. d7 $18) 21. Nc4 (21. fxg4 Nxg4 22. Qd1 Nxf2 23. Rxf2 h3
24. Bg4 Rf6 25. Rfc2 (25. gxh3 Nh4 26. Qb3 Qe8 27. a5 Qg6 $15) 25... Qb6+ 26.
Nf2 Bxg4 27. Qxg4 hxg2 28. Kxg2 Qb3 $14) 21... g3 22. Bb6 gxh2+ (22... Qe7 23.
h3 Nf8 24. Qd2 Ne8 25. Qb4 Bd7 26. Ba5 b5 27. Nb6 Rb8 28. Nxd7 Qxd7 29. Rc6
Qa7+ 30. Kh1 $16) 23. Kxh2 Qe7 24. Bf2 Nd7 25. a5 Bf8 26. Qc3 (26. Rh1 Qg5 27.
Qb3 Rg7 28. Bf1 Nh8 29. Rc3 Nf7 30. Qa4 Rg6 $14) 26... Qg5 27. Qb4 Rg7 (27...
Rh7 28. Rc2 Nc5 29. Nb6 Rb8 30. Nxc5 dxc5 31. Qb3 h3 32. g3 fxg3+ 33. Bxg3 Nf4
$16) 28. Rh1 Nh8 (28... Nc5 29. Nxc5 dxc5 30. Qc3 $16) 29. Bf1 Nf7 30. Ne1 Qh5
31. Rc3 Ng5 (31... Be7 32. Kg1 h3 33. Qa4 (33. Rh2 Ng5 34. Qa4 Rb8 35. Kh1 Nf6
36. Qc2 Bd7 37. Nb6 Bd8 38. Nxd7 Rxd7 39. b4 hxg2+ 40. Bxg2 Qe8 41. Rc8 Rxc8
42. Qxc8 Rf7 43. Bf1 Qd7 44. Qxd7 Nxd7 45. Be2 Rg7 46. Ng2 Nh7 47. Nh4 Bxh4 48.
Bxh4 Nhf8 49. Bf1 Ng6 50. Bd8 Kf7 51. Bh3 Ke8 52. Bc7 Nh4 53. Bg4 $18 {
White wins.}) 33... Kh7 (33... Ng5 34. Rh2 Rb8 35. Kh1 Nf6 36. Nb6 hxg2+ 37.
Bxg2 Bh3 38. Nc8 Bf8 39. Qc4 Bxg2+ 40. Nxg2 Nh3 41. Be1 Rg3 42. Qe2 Kg7 43. b4
Nd7 44. Qf1 Rxc8 45. Rxc8 Rxf3 46. Qe2 Rf2 47. Nxf4 Rxh2+ 48. Kxh2 Nxf4+ 49.
Qxh5 Nxh5 50. Rc7 Nhf6 51. Rxb7 $18 {White wins.}) 34. Qc2 Rg8 (34... Ng5 35.
g3 fxg3 36. Bxg3 Rb8 37. b4 Kg8 $16) 35. Rh2 Ng5 36. Kh1 Rb8 37. gxh3 $16) 32.
Kg1 h3 33. Rh2 Qg6 34. Kh1 hxg2+ 35. Nxg2 Rh7 36. Nh4 Qf6 $18 {White wins.})
19. hxg3 fxg3 20. Bxg3 Bh6 21. cxd6 Bxc1 22. dxc7 Be3+ 23. Kh1 Qf8 24. Nxe5
Nxe5 25. Bxe5 Ng4 26. Bg3 Bb6 27. Qd2 Ne3 28. Rg1 a6 29. a5 Bc5 30. Nc3 Ng4 31.
d6 Be3 32. Qd5 Nf6 33. Qd3 Bxg1 34. Kxg1 Qh6 35. Qd4 h4 36. Be5 Be6 37. Bxf6
Qxf6 38. Qxf6 Rxf6 39. Na4 Bd7 40. Nb6 Rxd6 41. Bc4+ 1-0
These lines aren't really my thing as 99% of the time I play (or have played against me) 9. b4 and the Bayonet Attack which I think offers better chances for white than 9. Ne1
#1
After 13. ... Ng6 I have 14. a5 played almost exclusively (56 times in my GM database compared to Nb5 once). Nd3 is played 3 times in my complete database (compared to a5 150 times).
After Nd3 I have a study (which references games I don't have in my databases) that suggests Nf6 but doesn't give alternate lines at that point. a6 seems like an option to stop Nb5 at a later date.
Also here is the study I mentioned which has much better analysis than I could hope to give (you may want to paste it into Chessbase or something to read it):
King's Indian Classical - 13.a4 ¤g6 [E99]
Survey, 2001
[Glek/Golubev]
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 0-0 6.Be2 e5 7.0-0 Nc6 8.d5 Ne7 9.Ne1 Nd7 10.f3 f5 11.Be3 f4 12.Bf2 g5 13.a4 Ng6 14.Nd3 [14.b4 Rf7 15.c5 Nf6 - 13.b4;
14.Nb5 Nf6! (14...a5 - 13...a5; 14...a6 15.Na7&fnof😉 15.Nxa7 g4 (15...Bd7 16.Nb5 g4 Stajcic-Gonsalez Garsia,Budapest 1995 17.fxg4 Nxe4 18.Bd3± Nunn) 16.Nxc8 g3 17.hxg3 Nh5 18.gxf4 exf4© Mietus-Schmidt,Polanica Zdroj 1992;
14.Kh1 a6 (14...Rf7!?) 15.Nd3 Rf7 16.c5 Nf6 17.cxd6 cxd6 18.a5 Bf8 19.Na4 g4 20.Nb6² Pihno-Santos,Loures 1996] 14...Nf6 15.c5 h5 [15...Rf7 16.a5! - 14.a5(16.Nb5?! g4„ Wehbe-Matthaei,Germany 1994) ;
15...Kh8 16.a5 - 14.a5] 16.h3 [16.cxd6 cxd6 17.a5 g4 18.Nb5 (18.Kh1 g3!) 18...g3 19.Bxa7 (19.hxg3 fxg3 20.Bxg3÷ Safyanovsky-Manik,Slovakia 1995) 19...Nh7 (19...Nxe4 20.fxe4 Qh4 21.hxg3 fxg3 22.Rxf8+ Bxf8 23.Bb6 Qh2+ 24.Kf1 Nh4 25.Ne1 Bh3 26.Bf3 Nxf3 27.Qxf3 Be7-+ Marek-Kazic,corr 1954) 20.h3 (20.Qd2 Qh4 21.h3 Bxh3 22.gxh3 Ng5 (22...Rxa7!?) 23.Bb6 Qxh3 24.Bd1 Nh4 25.Ne1 Qd7 (25...Rf6!?) 26.Nc7 Nh3+ 27.Kh1 Nf2+ 28.Rxf2 gxf2 29.Bxf2± Zimmermann-A.Schneider,Budapest 1994; 20...Qh4 21.Bb6 (21.Nf2 Ng5!‚ Agashe-Milu,Baile Herculane 1994) 21...Bxh3 22.gxh3 Qxh3 23.Rf2 Nh4 24.Qf1 gxf2+ 25.Nxf2 Qg3+µ Larsen-Torre,Bauang 1973;
16.a5 g4 17.cxd6 a)17.b4 g3!; b)17.a6!? bxa6 (b)17...g3 18.hxg3 fxg3 19.Bxg3 h4 20.Bh2 Nh5 21.axb7 Bxb7 22.f4÷ Schouten-Di Diego,Netherlands 1994) 18.Nb4 g3 19.hxg3 fxg3 20.Bxg3 h4÷ Schouten-Webbink,Netherlands 1995; 17...cxd6 - 16.cd6] 16...Rf7 17.c6 a5!! [17...Bf8 18.Nb5 g4 19.fxg4 Finke-Van Toor,corr 1992] 18.cxb7 [18.b4 b6! 19.bxa5 bxa5] 18...Bxb7 19.b4 Bc8 20.bxa5 Bh6! 21.a6! [21.Nb4?! g4‚ Kortchnoi-Kasparov,Amsterdam 1991] 21...Bxa6! 22.Nb4 Bc8÷ Kasparov 23.Nc6 Qf8 24.Nb5 g4 25.fxg4 hxg4 26.hxg4 Bg5 27.Bf3 Qh6 28.Re1 Nh4 29.Nd8 Nxf3+ 30.gxf3 Nxg4 31.fxg4 Rh7 0-1 Finke-Wieringa,corr 1995 ÷