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Viktor Korchnoi vs Anatoly Karpov
"This Old Man Plays d4" (game of the day Sep-24-2010)
Karpov - Korchnoi Candidates Final (1974), Moscow URS, rd 21, Nov-11
Queen's Indian Defense: Anti-Queen's Indian System (E17)  ·  1-0

ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 1 OF 6 ·  Later Kibitzing>
Jul-15-03  drukenknight: Uggh, what happened here? Any queens indian experts out there? Is 16...Ng4 any better?
Jul-15-03  Kenkaku: Can black hold if 15...Kxh7? After 16. Qh6+ Kg8 I don't see white's followup threat.
Jul-15-03
Premium Chessgames Member
  AgentRgent: <Can black hold if 15...Kxh7? After 16. Qh6+ Kg8> No, 17. Qxg6+ (the f pawn is pinned) Kh8 18. Bxf7 Rxf7 (forced due to the threat of Qh6#) 19. Qxf7
Jul-15-03  actual: <There's no possiblity of 15...Kxh7> Do you mean 13...Kxh7? Then 14 Qh6+ Kg8 15. Qxg6+ (pawn on f7 is pinned) Kh8 Bxf7 and the threat is Qh6# after Rxf7 Qxf7 white is up the exchange
Jul-15-03
Premium Chessgames Member
  AgentRgent: Wow, there's an echo.. hehe
Jul-15-03  actual: 16...♘g4 17. ♕xg6+ ♔h8 <17...♔f8 18. ♕xf7#> plenty of threats here 18. ♕h5+
Jul-15-03
Premium Chessgames Member
  AgentRgent: <white is up the exchange> Actually No, it's Bishop+Knight vs. Rook+3 Pawns.. but still a winning advantage for White.
Jul-15-03  drukenknight: yeah I think you are right actual. There's only like one major trap in the Queens indian but it keeps coming up over and over.
Jul-15-03  actual: Why 11...Nxd5? losing a kingside defender and allowing white's bishop to take aim at black's already weakened kingside?
Jul-15-03  Kenkaku: Yes, I meant 13..Kxh7. Qxg6 was the move I missed, although I did see that the pawn on f7 was pinned. I should've taken a moment longer to look it over.
Jan-06-04  Benjamin Lau: 7. Qc2 likely threw Karpov off track. It's not a very common move on the seventh turn. 7. o-o is standard I think. I think Karpov should have played 9...h6. It's going to weaken his pawn structure, yes, but I don't think leaving the knight there is a good idea.
May-28-04  WMD: "9...Nc6?! Karpov is the first to deviate from Game 5, where 9...g6 10.Qd1?! d6 11.cxd5 Na6 12.0-0 had been played, but it is by no means clear that this new move is an improvement. In our notes to Game 5, we recommended the aggressive continuation: 9.Ng5 g6 10.cxd5 d6 11.h4! as White's most logical plan, since all his pieces are conveniently aiming at Black's king. In the interval between Games 18 and 19 we had the opportunity to suggest this possibility to Korchnoi and spent some time with him in analysis of the resulting sharp situations. He seemed favourably impressed by White's chances.

From what follows in this game it is clear that Korchnoi had by now decided that White's best prospects in this variation do indeed lie in an all-out assault against Black's King." (Karpov-Korchnoi 1974, Hartston, Keene)

"The probable reason for Karpov's delayed resignation is that he must have been in a state of shock - he had, in home analysis, reached and looked at the position after Black's twelth move but had failed to notice anything the matter with it...that is until he had just made the move on the board against Korchnoi, when he suddenly realised..." (Batsford Chess Yearbook)

May-29-04  csmath: Karpov's problems here started with 9....Nc6, then 10....g6 was forced, then 11....Nxd5 was looking for a trouble when 11....Rb8 would have been the right move. One cannot disregard the impression that this is all way too sharp for a taste of a player that would use Queen's Indian as black and no wonder that Korchnoi would like to play this as white. Nevertheless the game was decided after fishy 11.... Nxd5 since after that the only solid move for black 12. ... Bf6 leaves black under attack after 13. h4. If black opts for removal of Knight with 12....Bxg5 he will be left with a defence of a complex of bad black fields around his king without a help of bishop. Karpov's move 12. ...Rb8 is just one move too late and a blunder since after the 13th move of white the game has already been decided. This game has theoretical value for none of us playing QID as black will play 9. ... Nc6 any more these days.
May-29-04  Ej32305: i what to chenllge kenkaku
May-29-04  WMD: In additon to 11...Rb8, ...Re8 was also possible, shifting the bishop to g7 via f8.
May-29-04  Owl: After 13.Nxh7 Kxh7 14.QH6+ KF8 Then what someone show more. Is it gonna be Koroch having 3 pawns and rook against Karpov having 2 minor pieces and a rook. Is that a real advantage.
May-29-04  csmath: Owl, 14...Kg8, 15.Qg6 leads to mate in 6 moves, try to find it, but even without that black is totally lost.
May-29-04  Owl: I dont see it please show me.
May-29-04
Premium Chessgames Member
  tamar: <owl> After 14...Kg8 15 Qg6+ Kh8 16 Qh5+ is fastest. The idea is if 16...Kg8, to go for mate with 17 Be4 f5 18 Bd5+, when the queen on h5 prevents any interpositions with the rook on f7, or 16...Kg7 17 Bh6+ when the dark square bishop enters with check.
May-30-04
Premium Chessgames Member
  Benzol: <Owl> 13...♔xh7; 14.♕h6+ ♔g8; 15.♕xg6+ ♔h8; 16.♕h6+ ♔g8 17.♗e4 f5; 18.♗d5+ ♖f7; 19.♕g6+ is the end for Black. Analysis by Robert Bryne.
Jun-01-04  drukenknight: Ummm, do we know for sure the final position is lost? Playing w/ the crappy computer I get the following; maybe Fritz can find a better line:

19...Nc6
20. f5 Re5
21. Qf4 b5
22. fxg6 fxg6
23. Qf6 Kh7
24. b3 Be6
25. Rf4 c4
26. bxc4 bxc4
27. e4 g5
28. Rf2 g4
29. Raf1 Rh5
30. Rf4 a5
31. a4 Rc8
32. Qc3 Ne5
33. Kh1 Nf3
34. Rf2 Rb8
35. Qa1 c3
36. Rf6 Rb2
37. Rxb2 cxb2
38. Qxb2 Rxh2+
39. Qxh2+ Nxh2
40. Kxh2 Kg7
41. e5 Bb3
42. Ra6 Bxa4
43. Rxa5 Bc6
44. Ra7

Sep-06-04  Dick Brain: Your program analyzed it to equality? That's interesting, I guess there are no immediate game-ending shots anywhere in there. On principle, the first move that I don't like here for White is 24. b3 since it drives the Black bishop into a better defensive position. I guess the computer did that to protect White's a-pawn. Had White immediately played 24. Rf4 than Black's defense g5 would be simply met with Rf5 and the white g-pawn clearly falls leaving White with two connected passers and a completely exposed Black king.
Sep-06-04
Premium Chessgames Member
  offramp: We should try and get Ray Keene's opinion on this game since it was an idea of he and Hartston's that was the kernel of white's attack in this game.
Feb-01-05  GreenDayGuy: Huzzah! 100th kibitz. Anyhoo, why did black sac his queen?
Feb-01-05
Premium Chessgames Member
  offramp: If he moves his queen away with say
16...Qc7 then 17.Bf6 sets up an unavoidable mate.
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