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Vladimir Epishin vs Yury Dokhoian
USSR (1986)
King's Indian Attack: Sicilian Variation (A08)  ·  0-1



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Given 14 times; par: 51 [what's this?]

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Kibitzer's Corner
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Jul-23-11  Creg: As expected these weekend puzzles give me a headache. I've been lookking at this for awhile. I think black needs to open lines to the white king. This means, to me, opening the f-file, and the dark diagnol b8-h2 for our bishop. To accomplish these goals I am looking at:

30...f4 if, Qxf4 I think this is bad for white to have his king so exposed. There are too many ways for black to infiltrate. So I looked at

30...f4 31.g4 Nxg4 32.fxg4 f3 33.Rf2 Rxh2 34.Rxh2 (34.Rxf3? Rf2+ and mate next move) 34...f2 35.Re2 Bxh2 36.Nh3 Qf3 37.Nxf2 (37.Rxf2 allows 37...Qxh3+ and Black regains his piece with advantage) 37...Qh1 mate! I forgot the knight at f2 will be pinned. Some of this might be wrong, but I think I'm on the right track. -----------
LOL - Not even close. I eschewed black's key move so fast that I never thought about it again... LOL, that's funny. :)

Premium Chessgames Member
  Jimfromprovidence: I loved 31...f4 for two reasons. It sets up 32...Ne3+, winning the exchange after 32 h3.

click for larger view

It prevents 32 fxg4 because after 32...fxg3+, below, white cannot play 33 Rf2, which was the point of 31 Qc2.

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Still, as <stukkenjaggger> noted, what if white got to f4 first with 31 f4?

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All I see here is through 31...Nxh2+ 32 Kg2.

Jul-23-11  stukkenjager: again no ko-win on saterday

30...Ng4 31.f4 Nxh2+ 32.Kg2 g5
(32...Bc5 33.Qd1 Qh5 34.Bc4! dxc4 35.Qd5+ Qf7 36.Qxc5 b6 37.Qd4 Qb7+ 38. Kf2) (32...Bxf4 33.gxf4 Qg6+ (33...Qh5 34.Re3 Rg6+ 35.Rg3 Rxg3+ 36. Kxg3 g5) 34.Kf2 Ng4+ 35.Kf1 Rh1 36.Qc1 Qh5 37.Rg2 Qh3 38.Qd1 Kh8) (32... Bb8)

33.fxg5 Rh5 34.Re6 Bxg3 35.Kxg3 Qc7+ (35... f4+ 36. Kf2 Ng4+ 37.Kf3) 36.Kf2 Qf4+ 37.Ke2 Nf1 38.Nf3 Ng3+ 39.Kd1 Qxf3+ 40.Kc2 Rh2+ 41.Kb3 Ne4 42.Bxe4 dxe4 43.Re7

Jul-23-11  Patriot: Time limit: 10 minutes with chess clock.

Material: Even
Threats: 31.Rxe5
Initial candidates: Nxd3, Nxf3, Rxh2

30...Nxd3 was the only reasonable candidate here, but it doesn't look strong after 31.Qxd3. It's not unreasonable to consider a move like this OTB but you should be looking for something better if you have the time--something promising. I thought white may be a little better there since it centralizes the queen which hits d5, even though anything immediately tactical didn't present itself. After several minutes into this puzzle, I added another candidate: 30...Ng4. White's position looks very bad after 31.fxg4 fxg4+ 32.Kg2 Qh5. I figured white's best may be 31.Qc2 to add additional support. I didn't really see what may happen here but it's not like 31.Qc2 is going to really worry white. The only thing you have to be careful about is the knight being snapped off where white is able to defend.

After seeing what was played I thought...WOW! I never considered 31...f4 but it's an even more amazing finish after that.

Jul-23-11  Patriot: That's interesting. I thought 30...Nxd3 31.Qxd3 favored white but Houdini says it slightly favors black *IF* 31...f4 is played. Everything else favors white. Again I missed ...f4. Maybe I need to study pawn play.
Jul-23-11  jheiner: <Jimfromprovidence said: All I see here is through 31...Nxh2+ 32 Kg2.>

Nice analysis. I particularly liked the comments on 32...Ne3+ winning the exchange.

As for: 31...Nxh2+ 32.Kg2

Simply the quiet retreat 32...Ng4

I don't know what the computers say, but just on principal, I would hate to be White here.

click for larger view

Black is a P up, probably more shortly.
The Black K is secure.
Black controls the center.
Black has an outpost N.
Black has a R lift to h6 and the h file is open.
The Black Q is coming to h5, maybe after Rh2+, maybe before. The White Pg3 is weak.

Jul-23-11  patzer2: Is there a win for Black in our Saturday puzzle with 30...Ng4! after all?

The position gets difficult as several posters observe after 30...Ng4! 31. f4!? Nxh2+ 32. Kg2 (diagram below).

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It would seem Black gets a strong and lasting advantage with 32...Bc5! 33. Qd1! (33. Qa2 Rd8 34. Nh3 Nf3 35. Re8+ Rxe8 36. Rxe8+ Qxe8 37. Qxd5+ Qf7 38. Qxc5 Ne1+ 39. Kg1 Nxd3 40. Qc8+ Qf8 41. Qc4+ Kh8 42. Ng5 Qc5+ 43. Qxc5 Nxc5 ) 33... Qh5 (diagram below)

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In this position, White seems to be walking a tight rope to barely hang on, but may be able to survive after 34. Bc4! dxc4 35. Qd5+ Qf7 36. Qxc5 b6! 37. Qd4 Qb7+ 38. Kf2 Ng4+ 39. Kf1 Qc6 40. Re7 Rg6 41. R1e6 Qxe6 42. Rxe6 Rxe6 43. Nf3 Rfe8 44. Kg1 Kh8 45. Qd7 (diagram below).

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While there is no quick forced win, Black is clearly better in this position. This suggests to me that today's 30...Ng4! is at least a sham sacrifice to win a pawn for a clear positional advantage.

P.S.: I'm analyzing with an old Fritz program, so would appreciate if anyone with a strong program would share any improvements.

Jul-23-11  CHESSTTCAMPS: In this opposite-colored bishops middlegame position, material is even, but white has a passive knight and a loosening of the king's pawn shelter. The lifted black rook at h6 provides additional evidence of a black advantage. It took me a while to find the most promising candidate, but the doubled majors on the file of the WK should have tipped me off quickly:

30... Ng4! is just the right move to probe the weakened castle. The DSB gives black an extra piece on the kingside to make up for the sacrificed knight.

31.cxb4 cxb4+ 31.Kg2 Qh5 (32... Bxg3? appears to be refuted by 32.Rf1!) 32.Kh1 Bxg3 33.Qc2 Bxe1 34.Rxe1 g3 (threatening mate-in-2) 35.Re2 (h3 Rf2 36.Re2 Rf1 37.Kg2 Rxg1+ 38.Kxg8 Qxh3 wins) Rf1 39.Kg2 (otherwise 39... Qf3+ 40.Rg2 Rxh2#) gxh2! and black gets a winning promotion.

If white declines with 31.h3, Bxg3 continues a ferocious attack, but I don't have time for detailed analysis now.

Time for a quick review...

Jul-23-11  patzer2: While 30...f4 "wins the exchange" after 31. Rxe5 Bxe5 32. Rxe5 Rxh2 33. g4 g6 34. Re2! Rxe2 35. Nxe2 (diagram)

click for larger view

White is equal or even slightly better with two pieces for the Rook.

Jul-23-11  CHESSTTCAMPS: As I suggested in my post (and as mentioned by <David2009>) the EGT declines with 31.h3 (h6 in the colors-reversed position). I immediately essayed my suggested Bxg3 (Bxg6) and a tactical melee followed that ended in a draw. But there are likely improvements to be found...
Jul-23-11  patzer2: For a winning line against Crafty's 31. h3 try 31...Bxg3! 32. hxg4 fxg4 33. Re7 Qf4 34. R1e3 Rh2 35. Bxh7+ (35. Re2 Rh1 36. R2e3 Bh2 37. Kf2 gxf3 38. Nxf3 Qg3+ 39. Ke2 Qg2#) 35... Kh8 36. Qg6 Rf2+ 37. Ke1 Rxf3+ 38. Kd2 Rf2+ 39. Ne2 Rxe2+ 40. Kxe2 Qf1+ 41. Kd2 Rf2+ 42. Re2 Bf4+ 43. Kc2 Rxe2+ 44. Rxe2 Qxe2+ 45. Kb3 g3 46. Qf5 (46. Qf7 Qc4+ 47. Kc2 Kxh7 48. Qh5+ Bh6 49. Qf5+ Kg8) 46... Bc1 47. Qb1 Qxb2+ 48. Qxb2 Bxb2 49. Kxb2 Kxh7 .
Jul-23-11  WhiteRook48: I got it!
Jul-23-11  patzer2: <jheiner> After 31. f4! Nxh2+ 32.Kg2 Ng4 (diagram in your post above), simply 33. Nf3 relieves the immediate tactical pressure on White's position and makes Blacks task more difficult.

Putting on more pressure is 32...Bc5! as it impedes White's development with the threat 33. Nf3?? Nxf3 34. Kxf3 Qh5+ 35. Kg2 Qh3+ 36. Rg3 with a mating attack.

Jul-23-11  stst: Again late & tired from a long working day (is it a Saturday?) Try this line, which contain "soft" spots:
30.... Ng4 (eyeing h2)
31.fxg4 fxg4dis+
32.Kg2(R or N inter-block invites fierce attack by Q) Qh5 33.h4 Bxg3 (remove guard of h4P)
34.Kxg3 Qxh4+
35.Kg2 Qh2#
not much energy left, just check....
Jul-23-11  stst: at least got the idea in 1st move 30....Ng4
(should explore the heavy defense of bring W's Q to help R to guard h2.)
Jul-25-11  LIFE Master AJ: 30.Rde2 Ng4! 31.Qc2!?

[<31.fxg4?? fxg4+ 32.Kg2 Qh5 ;

Best was: 31.f4! Nxh2+ 32.Kg2 Bc5! 33.Re5 Ng4! 34.Nf3 (</= 34.Rxf5?! Rh2+ 35.Kf3 Nh6! 36.Rxf7?? Rf2#) 34...Nxe5 35.Rxe5 (</= 35.Nxe5? Qh5 36.Rh1 Qxh1+ 37.Qxh1 Rxh1 38.Kxh1 g6; ) 35...Qh5 36.Nh4 Re8! 37.Rxf5 Qg4 38.Rg5 Re2+! 39.Bxe2 Qxe2+ 40.Kh3 Be7! 41.Rg4 Qf3 42.Qg1 Kf7!! 43.a5 Bf6 44.Qg2 Qd3! 45.Kh2 Be7! (zugzwang) (" ") (45...Be7! 46.f5 Qxf5 47.Qe2 Bxh4 48.Rxh4 Rxh4+ 49.gxh4 Qf4+ 50.Kh3 g6 51.Qd1 Ke6 52.Qb3 h5! 53.Qxb7 Qg4+ 54.Kh2 Qxh4+ 55.Kg2 Qg4+ 56.Kh2 Qc4 ) ]

31...f4! 32.Rg2?!

[Best was 32.h3▢]

32...fxg3!! 33.hxg3 Rh1 34.f4 Bxf4! 35.gxf4 Qxf4+ 36.Ke2 Ne3 37.Qb3 Nxg2 0-1

Premium Chessgames Member
  NM JRousselle: Can anyone help me to understand White's 11th move? White is playing a Gruenfeld Defense with a move in hand. For all the years I have played this defense, I don't ever recall moving the King's Bishop back to his home square so soon.
Jul-28-19  mel gibson: I saw that straight away!
As from the computer analysis -
White plays poorly to lose that quickly.
Stockfish 10 says:

30... Ng4

(30. .. Ng4 (♘e5-g4
f3xg4 f5xg4+ ♔f1-g2 ♕f7-h5 ♔g2-h1 ♗d6xg3 h2-h3 g4xh3 ♖e1-f1 h3-h2 ♘g1-h3 ♖h6-f6 ♖e2-e3 ♕h5xh3 ♖f1xf6 ♖f8xf6 ♕b1-e1 ♗g3xe1 ♖e3xh3 g7-g6 ♖h3xh2 ♗e1-f2 ♖h2-h3 ♔g8-g7 ♔h1-g2 ♗f2-a7 ♖h3-f3 ♖f6-e6 b2-b4 h7-h5 c3-c4 d5xc4 ♗d3xc4 ♖e6-e4 ♖f3-f7+ ♔g7-h6 ♖f7xb7 ♖e4xc4 ♖b7xa7 ♖c4xb4 ♖a7xa6 ♔h6-g5 a4-a5 ♖b4-b2+ ♔g2-f3 ♖b2-a2 ♖a6-a8 ♖a2-a3+ ♔f3-g2 ♔g5-g4 a5-a6 ♖a3-a2+ ♔g2-h1 h5-h4) +2.00/41 140)

score for Black +2.00 depth 41

Jul-28-19  malt: I had 30...Ng4 31.h3
(31.fg4 fg4+ 32.Kg2 Qh5 )

31...Nf6 32.f4 Bc5 33.B:f5 Nh5 34.Be6 R:e6 35.R:e6 Ng3+ 36.Kg2 Q:f4 37.Rfe2

(37.Qc2 Nf1 38.Kh1 Qg3 )

37...N:e2 38.R:e2 Bd6 39.Kh1 Q:a4

Jul-28-19  RandomVisitor: After 23...Nc6 white can play 24.fxe4! where black has no good reply:

click for larger view


45/66 +2.64 24...fxe4 25.Bxe4 dxe4 26.Qxe4 h6 27.Nh3 Qd5 28.Bf4 Bf8 29.Nf2 Rf5 30.Ng4 h5 31.Qxd5 Rxd5 32.Ne3 Rd7 33.Nd1 Nd8 34.Re5 h4

43/67 +2.56 24...dxe4 25.Bxe4 fxe4 26.Qxe4 h6 27.Nh3 Qf5 28.Bf4 Bf8 29.Nf2 g5 30.Bd2 b5 31.axb5 axb5 32.Qxf5 exf5 33.h4 gxh4 34.gxh4 b4

44/84 +3.15 24...Nb4 25.Qb1 Nxd3 26.e5 Nxe1+ 27.Qxe1 Bxe5 28.Rxe5 Qf7 29.Nh3 h6 30.Nf4 Rc6 31.h4 Rb6 32.Nd3 Qe8 33.Qd1 a5 34.Bf4 Kh7

44/61 +3.73 24...Nxd4 25.Qd1 fxe4 26.cxd4 exd3 27.Re3 Qxd1 28.Rxd1 Rc2 29.b3 g5 30.Rxd3 g4 31.Re1 Rb2 32.Re2 Rb1 33.Rc3 Kf7 34.Bc1 Bb8

44/70 +6.27 24...f4 25.e5 f3+ 26.Nxf3 Qxf3+ 27.Kg1 Nxd4 28.Bxh7+ Kh8 29.cxd4 Rxc2 30.Bxc2 Bxe5 31.dxe5 Rf8 32.Bb4 Rc8 33.Bd6 a5 34.Bb1 Qb3

Jul-28-19  Whitehat1963: For the curious, here’s what Stockfish comes up with: 31. fxg4 fxg4+ 32. Kg2 Qh5 33. Kh1 Bxg3 34. h3 Bf2 35. Re5 Qh4 36. Re8 Bxe1 37. Qxe1 Qxe1 38. Rxe1 gxh3
Jul-28-19  agb2002: White threatens Rxe5.

The first ideas that come to mind are f4 and Ng4.

In the case of 30... Ng4 (threatens Nxh2+ and f4):

A) 31.fxg4 fxg4+ 32.Kg2 Qh5 33.h3(4) gxh3+ 34.Kh2 (34.Kh1 h2) 34... Bxg3+ 35.Kh1 (35.Kxg3 h2 looks winning) 35... Bxe1 Black seems to win decisive material (36.Rxe1 h2 37.Ne2 Qf3#). However, White has 32.Bf5 Rf6 33.Rf2 which seems to stop the attack at the price of a pawn.

B) 31.h3 Bxg3 32.hxg4 fxg4 seems to give more than enough compensation (33.Rd1 gxf3 34.Red2 Rh1).

C) 31.Qc2 f4 32.fxg4 fxg3+ looks similar to A.

That's all I can do today.

Jul-28-19  RandomVisitor: <NM JRousselle: Can anyone help me to understand White's 11th move? White is playing a Gruenfeld Defense with a move in hand. For all the years I have played this defense, I don't ever recall moving the King's Bishop back to his home square so soon.>Stockfish does not understand it either:

click for larger view


<47/62 53:40 0.00 11...h5 12.h3 h4 13.g4 0-0> 14.c3 Ne4 15.Nd2 f5 16.gxf5 exf5 17.Qh5 Rf7 18.Nxe4 fxe4 19.Be3 Qd7 20.Be2 Bd8 21.Bg4 Qd6 22.c4 Bc7 23.Qxd5 Qh2+ 24.Kf1 Bg3 25.Be6 Raf8 26.Ke2 Bxf2 27.Bxf7+ Rxf7 28.Rf1 Nxd4+ 29.Qxd4 Bxe3+ 30.Kxe3 Qxh3+ 31.Ke2 Qg4+ 32.Ke3

Premium Chessgames Member
  perfidious: It is passing strange that Dokhoian, even then well-prepared theoretically, should play a line known to be dubious well before this game, then wind up in a form of Reverse Gruenfeld in which he should stand slightly worse, as the system with 4.Nf3 and 5.Bg5 does not offer more than equality.
Premium Chessgames Member
  NM JRousselle: I think White missed his chance at move 24. Qb1 looks suspect. Taking 3 times on e4 looks good for White.
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