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Vadim Zvjaginsev vs Yuri Vovk
Moscow Open (2008), rd 5, Feb-06
Sicilian Defense: Nezhmetdinov-Rossolimo Attack (B30)  ·  1-0


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Given 17 times; par: 52 [what's this?]

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 3 OF 3 ·  Later Kibitzing>
Apr-17-08  Manic: <NotABanker> How is it stupid? The many posts before you provide the answer should you decide to read it.
Apr-17-08  TheaN: 4/4

Hey, a Thursday puzzle within one or two minutes, that's actually nice.

Black resigns in anticipation of the upcoming attack starting with 30.Rxd4!

30....Qxd4 31.Qxe6! Rd8 (Rb7 32.Qc8+ / Rc7 32.Bxc7 / Re/f/g7 32.Qc8# / Qa5 32.Qxd5+) 32.Bc7 threatening 33.Qc6# and Black cannot keep his rook. 32....Qa5 keeps some tension as it might win a3 at some point, but I didn't go as far as that. Good combo.

Apr-17-08  griga262: I am not going to rehash the nice analysis done by the other posters. But it took me a good few minutes to get away from trying to achieve something with Queen checks, and to seriously look at Rxd4. Then it all pretty quickly fell into place. It's not often that I solve a Thursday puzzle, so this makes me pretty happy. Very unlikely that I would have done it OTB, though.
Apr-17-08  znprdx: Quite a pretty swindle - given that 29. Rd1 was forced (Black had the mate threat Nf3) 30.Rx[N]d4 is the key - but best of all is that the Qf8+ > Qb8+ line is ‘just an illusion’ which I unfortunately fell for yet wonder if White could still pull off a draw by picking off the e6 pawn
Apr-17-08  zb2cr: I made the same mistake as <zooter>, trying 31. Rxd4, Qxd4; 32. Qf8+, Kb7; 33. Qb8+, Ka6; 34. Qc8+ with the mistaken idea that it won a Rook--but 34. ... Rb7 stops that little idea.
Apr-17-08  234: Wednesday puzzle <26. ?> Apr-16-08 Blackburne vs J Schwarz, 1881
Premium Chessgames Member
  johnlspouge: Thursday (Medium): White to play and win.

Material: B for N. White has control of the dark squares, based on Pe5, Bd6, and Qf6. The Rd1 (and somewhat Qf6) need to be activated. The Black K is vulnerable, and Rd7 is loose. The Black Qg4 threatens Rd1, and with Nd4, threatens Kg1, but there is no perpetual check. Moreover, the threats take at least two moves to develop: …Qh3, … Ne2+ or …Nf3+ or …Qxh2#. If White moves Rc1, Nd4 can fork Kg1 and Rc1.

Candidates (30.): Qf8+, Qh8+, Rxd4

30.Rxd4 Qxd4 [else, lose a N] 31.Qxe6 threatening

(1) 32.Qf8# if the Rd7 moves;

(2) 32.Qxd7 winning a N; and

(2) 32.Qxd5+ Rb7 33.Qg8+ Rb8 34.Qxb8#

Black has only one feasible response.

31…Rd8 32.Bc7 (threatening 33.Bxd8 and Qc6#)

Black loses Rd8 and is down a B.

Black appears to survive the alternative

30.Qf8+ Kb7 31.Qb8+ Ka6 32.Qc8+ Rb7

Apr-17-08  boz: I like this puzzle because it's not forcing, it's paralysing.
Apr-17-08  boz: <tamar: The final position would make a good Thursday puzzle. Wonder if Vovk saw the loss after 30 Rxd4 or picked up on Zvjag's body language and then noticed.>

It would be interesting to know. Svaginsev must have had plenty of time, otherwise Vovk could hope he might blitz out 30.Qf8+ without thinking more carefully. Maybe Szaginsev won with a sage smile.

Vovk should have allowed White to play one or two moves. No shame in resigning after 31.Qxe6 leaving the quiet 32.Bc7 unstated.

Premium Chessgames Member
  Jimfromprovidence: No one's yet commented on black's 29th move...Qg4?? He played it one move too early. He should have played 29...Ne2+ 30 Kh1 then 30...Qg4, threatening Nxg3+, winning white's rook.

click for larger view

Now, if 31 f3 then 31...Qh3. White's under some pressure here.

Apr-17-08  Magic Castle: <mig55> The back rank checks theme loses because the King simply goes to A6 then Qc8+ is refuted by Rb7 and its white turn to defend. Qe6 might still be the best key move (solution)
Apr-17-08  Magic Castle: <jimfromprovidence> The move 29. Qg4 is not something that cannot be defended upon. The rook simply moves away immediately or later on after white attack execution as a reinforcement. Because of the many options for white, nobody cared to look for the possible continuations.
Apr-17-08  Marvol: <Vovk should have allowed White to play one or two moves. No shame in resigning after 31.Qxe6 leaving the quiet 32.Bc7 unstated.>

I agree, this is a case of premature resignation. You should always let your opponent find these 'obvious' moves, especially since here there is the nontrivial failing line after Qf8+ etc.

(I call that nontrivial because I thought it was actually winning :P).

Premium Chessgames Member
  kevin86: This is the easiest puzzle in history!! All white has to do for his 30th move is to accept his opponent's resignation---lol

Note how I'm doing a little about-face here. I often do post-mortems to explain why a player has resigned.

Premium Chessgames Member
  patzer2: <Peligrosa Patzer> Good post! You correctly point out the double attack 32. Bc7! threatens both 33. Bxd8 and 33. Qc6#, which was what I intended to write (instead of the 33. Qxd5+? I mistakenly recorded in my previous post).
Premium Chessgames Member
  Jimfromprovidence: I'm going to amend my earlier post...

"No one's yet commented on black's 29th move...Qg4?? He played it one move too early. He should have played 29...Ne2+ 30 Kh1 then 30...Qg4, threatening Nxg3+, winning white's rook."

Black should play 30...Qh5, not 30 Qg4.

click for larger view

Now white can't play 31 f3 because that loses material by 31...Nxg3+.

Black has a lot of threats at this point and should be able to secure at least a draw.

Apr-17-08  Waitaka: Analysing the position after 29...Qg4, Fruit 2.3.1 thinks the best play for white is 30.Rxd4. Nothing new here. The interesting point are the evals of the best black response:

1. 30. ... Qg8 31.Qh6 Rd8 32.Rh4 Rd7 33.Rf4 Rd8 34.Rf6 Re8 35.Be7 Qg4 36.Rxe6 Kb7 37.h3 Qf5 38.g4 Qb1+ 39.Kh2 Rc8 (scores +4.35)

2. 30. ... Qxd4 31.Qxe6 Rd8 32.Bc7 Qd1+ 33.Kg2 Qc2 34.Bxd8 Qe4+ 35.Kh3 Kb8 36.f4 Qg6 37.Qxg6 hxg6 38.e6 Kc8 39.Bf6 b5 40.Kg2 Kc7 41.h4 Kd6 42.e7 (scores +6.15)

Apr-17-08  Waitaka: And that is Fruits opinion of best black 29 move:

29. ... Ne2+ 30.Kh1 Qg4 31.Qf8+ Kb7 32.f3 Qh3 33.Qg8 Ka6 34.Re1 Rb7 35.Qe8 Nxg3+ 36.Kg1 Rg7 37.Qc8+ Rb7 38.hxg3 Qxg3+ 39.Kf1 Qxf3+ 40.Kg1 Qg3+ 41.Kf1 Qf3+ (scores 0.00 - draw)

Apr-17-08  sandmanbrig: 4/4 this week
Apr-17-08  wals: Static Evaluation: Material is even.

Dynamic Evaluation: Whute has the advantage of the first move as both Kings are subject to check

Abstract Assessment:

. The removal of the knight on
d4 is necessary if White is to successfully apply check on the back rank. (Nc6 would cover the squares b8 & d8.)
Candidate move = Rxd4

30.Rxd4 ...Qxd4 31.Qf8+ ...Rd8 32.Qxd8+ ...Kb7
should be enough for this puzzle

PM= Bit of a surprise there.

Fritz 11 goes for 30. ...Qg8

Analysis by Fritz 11:

1. (5.75): 30.Rd1xd4 Qg4-g8 31.Rd4-f4 Ka8-b7 32.Qf6-h6 Rd7-d8 33.Qh6-h5 Qg8-g6 34.Rf4-f7+ Kb7-a8 35.Qh5xh7 Qg6xh7 36.Rf7xh7 Rd8-c8 37.Rh7-e7 d5-d4 38.Re7xe6 d4-d3 39.Bd6-b4 a7-a5 40.Bb4-d2 Rc8-c2

2. = (0.15): 30.Rd1-d3 Nd4-e2+ 31.Kg1-g2 Ka8-b7 32.Qf6-f3 Qg4xf3+ 33.Kg2xf3 Ne2-c1 34.Rd3-c3 Rd7-f7+ 35.Kf3-g2 Nc1-e2 36.Rc3-d3 Ne2-c1 37.Rd3-f3 Rf7xf3 38.Kg2xf3 Nc1-b3 39.Kf3-e3 Kb7-c6 40.f2-f4 Nb3-c5 41.Ke3-d4

(, 18.04.2008)

Premium Chessgames Member
  johnlspouge: After

30.Qf8+ Kb7 31.Qb8+ Ka6 32.Qc8+ Rb7

Toga II 1.3.1 evaluates best play as a perpetual check:

33.Rxd4 Qxd4 34.Qxe6 Qe4 35.Qc8 Qb1+ 36.Kg2 Qe4+ 37.Kg1

Apr-17-08  wals: Dammit, made what Fritz 11 considers to be the right move, for the wrong reasons.
Apr-17-08  PinnedPiece: Thurs puzzle: 30?

Hah! Didn't come up with any move...looked at the answer and I was right!!!!

I like the lines from alwazir and manic above:
<30. Rxd4 Qxd4 31. Qxe6 Qd1+ 32. Kg2 Qa4 33. Qxd5+ Rb7 34. Qg8+.> ..Rb8 and QxR#

Apr-17-08  t0l3r8t3: why not <26. ♕xg7>?
Premium Chessgames Member
  Jimfromprovidence: <Magic Castle> After 29...Ne2+ 30 Kh1 Qh5... you proposed 31 Re1.

If 31 Re1, then 31...Kb7. White can't play 32 Qxe6 because of 32...Qf3#.

The game should still end up as a draw.

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