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Vladimir Akopian vs Evgeny Sveshnikov
Rostov-on-Don Open (1993), Rostov-on-Don RUS
Sicilian Defense: Nezhmetdinov-Rossolimo Attack (B30)  ·  1-0

ANALYSIS [x]

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 3 OF 3 ·  Later Kibitzing>
Nov-07-08
Premium Chessgames Member
  chrisowen: White gets hungry for action and Qf3 successfully dangles the grub on which black hooks himself. Notice it isnt 32.h6 Kg6 (munching the pawn crops the bishop) Kg2?! as black gets in g4 or tries trading queens. G4 and black has no satisfactory defence: the production line of useful moves stops.
Nov-07-08  BadKnight: I found h6 after a while, but was not sure about g4 next, and could not calculate further..3/5 this week
Nov-07-08  Woody Wood Pusher: Hey <Dom> nice analysis, I like the 34. f4! <king hunt>, I hadn't seen that.

ideas like 34.Bf8 were why I considered cutting the rook off to be a weak try from black and I spent most of my time on 32..Rg8 and 32..Rh8 as defensive attempts.

Nov-07-08
Premium Chessgames Member
  agb2002: How about 31.h6+ Rg6 32.g4 (threatening Kg2 followed by Qd3+ and Qh3-h5 mate):

A) 32... Re8 33.Rxe8 Qxe8 34.Qf5+ Rxh6 35.Qxf6 mate.

B) 32... Rh8 33.Qh3 Bd8 34.Qh5+ Kf6 35.Re5 Rg8 36.f4 gxf4 37.g5+ Rxg5 38.Qxg5 mate.

C) 32... Qd8 33.Qf5+ Rxh6 34.Re8 winning.

D) 32... Bh8 33.Re7 winning.

E) 32... Bd8 33.Re5 (threatening Qd3+)

E.1) 33... f6 34.Qd3+

E.1.a) 34... Kxh6 35.Bf8+ winning the queen.

E.1.b) 34... Kf7 35.Qxh7+ winning the queen.

E.1.c) 34... f5 35.Rxf5 threatening a crushing discovered check.

E.2) 33... f5 34.gxf5+

E.2.a) 34... Kxh6 35.Bf8 winning the queen.

E.2.b) 34... Kf6 35.Re6+ Kf7 36.Qh5+ Kg8 37.Re8+ Qxe8 38.Qxe8 mate.

E.2.c) 34... Kf7 35.Qh5+ Kf6 (35... Kg8 36.Re8+) 36.Re6+ Kxf5 37.Re5+ Kf4 (37... Kf6 38.Qxg5+ Kf7 39.Qg7 mate) 38.Bb4 followed by Bd2+ winning.

I think that’s enough.

Nov-07-08
Premium Chessgames Member
  agb2002: Although 33.Re5 in my line E) also wins I have to admit that 33.Qh3 is stronger.
Nov-07-08  Nostrils: Where did I go wrong?
Analysis with Fritz 9.
Black MUST play 30 ...Qc6 anything else is bad. The queen defends the bishop so 31 h6+ can be met with 31 ...Kxh6

30 ...Qd8 defending the bishop loses to 31 h6+ ( 31 ...Kxh6, 32 Bf8+ Bg7, 33 Qxf7 and mate will follow)

After 30 ...Qc6 , 31 h6+ Kxh6, 32 Bf8+ is met by Rxf8.

Anything else just loses the d pawn.

31 ... Qd7 is a fatal mistake, but black has put himself into a position where he has to find an exact continuation which brings into question his previous 3 moves. I don't understand why he plays 27 ..kg7. Fritz wants to play ..b6, for about 3 consecutive moves.

Compliments to CG, good puzzle.

Nov-07-08  gambitfan: I saw rather quickly 31 h6 and "felt" that 32 g4 was quite "good"... but I did not deepen the analysis...

My ambition regarding this puzzle was limited since we are Friday...

Nov-07-08
Premium Chessgames Member
  johnlspouge: Friday (Difficult)

Akopian vs Sveshnikov, 1993 (31.?)

White to play and win.

Material: Even. The Black Kg7 has 4 legal moves, but is also the sole protection of Bf6, which Qf3 attacks. The burden suggests the decoy 31.Qxf6+ (which is too ambitious) or the deflection 31.h6+. The White Re1 controls the open e-file. Only the White Bc5 requires activation.

Candidates (31.): h6+

31.h6+ Kg6 [else, drop Bf6]

My time is again limited. The move 32.g4 looks double-edged but most promising, to trap Kg6 in a mating net, thereby forcing Bf6 to an inferior square. The move 32.Kg2 is more positional, to give Re1 access to the h-file, but it looks slower and less to the point.

Jul-16-21  Brenin: 31 h6+ Kg6 32 g4, and it's going be hard for Black to withstand the threats of Qd3+ and of Qh3 followed by Qh5.
Jul-16-21  mel gibson: I saw that in about 15 seconds.

Stockfish 13 says:

31. h6+

(31. h6+
(h5-h6+ ♔g7-g6 g3-g4 ♕d7-e6 ♖e1xe6 f7xe6 ♕f3-h3 ♗f6-h8 ♕h3-e3 ♖a8-e8 ♕e3-d3+ ♔g6xh6 ♕d3-h3+ ♔h6-g7 ♕h3-h5 ♖e8-a8 ♕h5xg5+ ♔g7-f7 ♕g5-e7+ ♔f7-g8 ♕e7xe6+ ♔g8-g7 ♕e6-d7+ ♔g7-f6 ♕d7-f5+ ♔f6-g7 ♕f5-g5+ ♔g7-f7 ♕g5xd5+ ♔f7-g6 ♕d5xb7 ♖a8-g8 ♕b7-d5 ♔g6-g7 ♕d5-d7+ ♔g7-g6 ♕d7-e6+ ♔g6-g7 g4-g5 ♖g8-a8 ♕e6-e5+ ♔g7-g6 ♕e5-e4+ ♔g6-h5 ♕e4-f3+ ♔h5-g6 ♕f3xa8 ♗h8-g7 ♕a8-c6+ ♔g6-h5 ♕c6-d5 ♔h5-g4) +16.43/37 211)

score for White + 16.43 depth 37.

Jul-16-21  Cheapo by the Dozen: I went with 33 Kg2, which also works.

The core ideas are:

-- White's h6 pawn is initially poisoned.

-- As long as the h6 pawn survives, Black's king is hemmed in. But if Black takes the pawn, then the h-file is open for business.

-- Moving Black's bishop to safety cuts off his major pieces from defense, but the alternative of first playing (for example) ... Rh8 is slow. Indeed, it's even slower than White's attack.

Jul-16-21
Premium Chessgames Member
  drollere: i found 31. h6+ Kg6 (otherwise Qxf6) but nothing more. g4 and Bd8 escaped me. it was like a rubik's cube i couldn't untwist.
Jul-16-21  Walter Glattke: 30.h6+ Kg6 31.g4 Re8 32.Rxe8 Qxe8 33.Qf5+ Kxh6 34.Qxf6# B) 30.-Kxh6 31. Qxf6+ Kh5 32 .Kg2 Qg4 33.Rh1+ Qh4 34.Qxf7+ Kh6 35.gxh4 g4 36.Qf6+ Kh5 37.Qg5# B2) 32.-Qh3+ 33.Kxh3 Rg8 34.Re6 Rg6 35.g4+ Kh6 36.Bf8# C) (h6 K6 g4) 31.- Bd8 (Bh8? Re7!) 32.Bf8 f6 33.Qd3+ f5 34.Re5 Kf7 35.Rxf5+ wins
Jul-16-21  stacase: Got the first two, but I would have moved 34.Bf8 threatening 35.Bg7+ followed by 36.Q.h5#. Didn't consider 34.Re5
Jul-16-21
Premium Chessgames Member
  raymondhow: Got the first two pawn moves, sorta wanted to play 33 Qh3 but instead went with 33 Bf8 thinking that would complete the trap.
Jul-16-21  stacase: I can't count, I got the first three moves. Duh!
Jul-16-21
Premium Chessgames Member
  chrisowen: Livid lavas ph6 flush ihasco its ok affable vorlon photon beam livid lavas katnap packet bands valor loquacious i vents quagmire groaned its ok himself vowus mc fewly juggle its kopy light bond v i wrench french Qd7 gotchas abridge livid Qc6 garrulous abridges logus livid totadd hunch foggy figgy ghost addle its hilly perfume gutted its cram ph6 coitus!
Jul-16-21
Premium Chessgames Member
  chrisowen: Ph6 it was a problem no?
Jul-16-21
Premium Chessgames Member
  chrisowen: Ginger see g4 row it pardon no
Jul-16-21  King.Arthur.Brazil: Since there's not much options, I supposed that the answer comes from: 31. h6+ ♔g6 32. ♔g2 ♔xh6 33. ♖h1+ ♔g6 34. ♕d3+ ♔g7 35. ♕xh7# or 33...♔g7 34. ♕h5 ♖h8 35. ♕h6+ ♔g8 36. ♕f8#. Neveretheless, Black can scape with 32. ♔g2 ♕f5 when the attack lose power. The move 31.♔g2! seems gain a tempo for passing the ♖ to attack by h1. However, with 31...g4 32. h6+ ♔g6 33. ♕d3+ ♕f5, the Black could defend his position still. The King recommends 31.h6+ ♔g6 32. g4 taking the f5 place, avoiding ♕f5 at any time. And, more over, Black would not reply 32...♖e8 because of 33. ♖xe8 ♕xe8 34. ♕f5+ ♔xh6 35. ♕xf6# nor 32...♔xh6 33.♕xf6#}. So, a neutral move like 32...♕c6 33.♔g2 ♖h8 34. ♕f5+ ♔xh6 35. ♗f8+ Now, if 35... ♗g7 36. ♖h1# or {35... Rxf8 36. Rh1+ Kg7 37. Qxh7# ). Time to check out!
Jul-16-21  awfulhangover: I thought h6 and then g4, so got the idea right. But thougt that the King goes to g2 and rook to h1 afterwards. Hard to get it all correct, but who does?
Jul-16-21  King.Arthur.Brazil: I didn't see 33.Qh3... The King would continue with: 33. ♔g2 f6 34. ♕d3+ ♔xh6 35. ♖h1+ ♔g7 36. ♖xh7+ ♔g8 37. ♕g6+, checkmate next But Black could survive more time, playing 33. ♔g2 f5 34. ♕d3 b6 35. ♗d6 when 35...♕xd6 36. ♕xf5+ ♔xh6 37. ♖h1+ ♔g7 38. ♖xh7+ ♔g8 39. ♕f7#. But how to continue after 35...♔f7, is a problem!
Jul-16-21  saturn2: found the first two moves. But g4 to prevent interposing the black queen on f5 after Qd3+
Jul-16-21  njchess: I got 31. h6+ ♔g6 after looking at the position for about a minute. What troubled me was Black's queen covering f5. Then, I saw I had time to play 32. g4, which then allowed 33. ♕h3 +-
Jul-16-21
Premium Chessgames Member
  agb2002: Level 2.5: 16.?
Morphy vs P Dominguez, 1864


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