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Aleksandr Lenderman vs Steven Zierk
National Open (2012), Las Vegas USA, rd 3, Jun-16
Caro-Kann Defense: Accelerated Panov Attack. Modern Variation (B10)  ·  1-0

ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 2 ·  Later Kibitzing>
Apr-27-13  cyclon: I praise how White finished Black after 18. -e5 in the game-line 17. -gxf6, which I thought inferior to 17. -Re8. But I didn't find the game-line, that's a fact. White's 19. Qh6!! and 21. Rd3!! are forceful moves and by no means evident ones.
Apr-27-13
Premium Chessgames Member
  al wazir: <BUNA: Better is perhaps 21...Bd7 22.Rad1 Ra7 23.Rh3! Bxh3 24.Rxd8 Rxd8 25.Qxf6+ Kg8 26.Qxd8+ Kg7 27.gxh3>

Yes, that works. Thanks.

Apr-27-13  snakebyt: I tried 7 Qg4 f6 18 Bh6 but then Ra7 ouch. Rd3 to check Q is brilliant amazing!
Apr-27-13  Patriot: 17.Bf6 looks strong. It stops the 17...f6 fork and creates the major threat of 18.Qg5:

17...gxf6 18.Re3 Rd8 19.Qh6

17...h6 18.Qg4 g6 19.Rh5 Kh7 20.Rxh6+

It seems black has nothing strong--just defensive tries. 17.Bf6 was pretty tough to find.

Apr-27-13  schweigzwang: I can totally screw up a Monday, and decide after 45 seconds that 17.Bf6 is the best I'm going to find. I doubt that I could get the follow-through accurately, though.
Apr-27-13  Patriot: <cyclon> Well said! This was very well played by "Alex". 21.Rd3 was especially beautiful.

18.e5 did not even occur to me, but it's one of those moves that makes white prove the bishop sac was well worth it! For me at least, defensive moves are hard to find when they don't seem forcing. But when a piece is sacrificed I had better look at non-forcing defensive tries as well--and there can be lots of them!

Apr-27-13  5hrsolver: < al wazir: BUNA: Better is perhaps 21...Bd7 22.Rad1 Ra7 23.Rh3! Bxh3 24.Rxd8 Rxd8 25.Qxf6+ Kg8 26.Qxd8+ Kg7 27.gxh3 Yes, that works. Thanks.>

I think even better is 21.Rd3 Bd7 22.Rad1 Ra7 23.exf6 Rg8 24.Rh3 Bxh3 25.Rxd8 and mate on g7

Apr-27-13
Premium Chessgames Member
  kevin86: The pawn will take on f6...with deadly results!
Apr-27-13
Premium Chessgames Member
  Jimfromprovidence: I saw the game line but expected 19...exd4.


click for larger view

This, of course, concedes the queen and when the dust clears you end up with something like this.


click for larger view

White's ahead a queen vs. rook and bishop.

Having said that the game line itself is quite amazing.

Apr-27-13
Premium Chessgames Member
  Jimfromprovidence: Here's the way the game might may continued beginning with 21...Bd7.


click for larger view

This move protects the queen and back rank for black. Next, he want to play 22...Rg8.

White is one step ahead and wins with 22 Rad1. So, for example if 22..Ra7, then 23 Rh3! follows.


click for larger view

Apr-27-13  SuperPatzer77: <5hrsolver: ..I think even better is 21.Rd3 Bd7 22.Rad1 Ra7 23.exf6 Rg8 24.Rh3 Bxh3 25.Rxd8 and mate on g7...>

<5hrsolver> Excellent commentary!!!

Black has no defense against Qg7#. If 25...Ra8, then 26. Qg7# (Black Rook on g8 is pinned by the White Rook on d8).

Well-done, <5hrsolver>!!

SuperPatzer77

Apr-27-13  vasja: After 17 Bf6 gf I thought 18 Re4, did not even look at 18 Re3, what is wrong with my solution, I think it wins faster.
Apr-27-13  5hrsolver: Thanks SuperPatzer77
Apr-27-13  MountainMatt: <vinidivici: Your line is weak>

And you are rude.

Apr-27-13  Bengambit: Bf6.......nice,got to try that,good puzzle this time around....
Apr-27-13
Premium Chessgames Member
  ajk68: Wow. Brilliant play.
Apr-27-13  SuperPatzer77: <5hrsolver> I wanna add my analysis to your line with 24. Rh3! below:


click for larger view

Black's another better try is 24...Rxg2+!?, 25. Kxg2! - see below:

a) 25...Bxh3+, 26. Kxh3 Qc8+, 27. Kh4! Qg8, 28. Rd8! and White is winning!!

b) 25...Qg8+, 26. Rg3 Bg4, 27. Rd8! and Black has no defense against Qg7#.

SuperPatzer77

Apr-27-13  DoctorD: This was a very nice puzzle that I saw earlier in the year. Bf6 is obvious, it is the remainder that is not easy to see, and I will admit I stumbled on the follow-up as I took that part lightly.
Apr-27-13  5hrsolver: < SuperPatzer77: I wanna add my analysis to your line with 24. Rh3! below: >

Good additional analysis. It all leads to mate.

Apr-27-13  Rama: How to stop 17. ... f6, put the Bishop on f6! Isn't there a Bobby-game where he puts a Rook on f6 for the same reason?
Apr-27-13  M.Hassan: "very Difficult"
White to play 17.?
materials are dead equal.

I did 7 moves but stalled:
17.Bf6 gxf6
18.Qg4+ Kh8
19.Rh5 Rg8
20.Qh4 Rg7
21.Qxf6 Bd7
22.Re1 Rb8
23.Rg5 Qf8

Time to check to see how the game was played.
==========
My first move only was reight.

Apr-28-13  Abdel Irada: I'm looking at this after the deadline, so won't be publishing a full solution post.

The idea is quite nice and very intuitive, but the follow-up is not obvious, and I spent some time refuting 17. Bf6!, gxf6 18. Re3, e5.

The impulsive rook check on g3 doesn't work, and this means one must find the subtle but deadly 19. Qh6, when the mate threat on g7 must be defended, and then White gains time with 20. dxe5, attacking queen and pinned pawn, followed by 21. exf6 and Black's position is untenable.

Apr-28-13
Premium Chessgames Member
  LIFE Master AJ: Nice game ... added it to my collection of short games.
Apr-30-13
Premium Chessgames Member
  PawnSac: <Rama: How to stop 17. ... f6, put the Bishop on f6! Isn't there a Bobby-game where he puts a Rook on f6 for the same reason?>

yes you are correct. There IS a Fischer game like that, i remember playing thru it, but just went thru the database and couldn't find it. I wasn't about to go thru 450 games looking. But Bobby was white fer sure and it was pre-1972

anyway, here's one where he puts a bishop on f6
Fischer vs Myagmarsuren, 1967

May-01-13
Premium Chessgames Member
  PawnSac: < For full game commentary on this great miniature, visit PawnSac's chessforum or click on this link: >

PawnSac chessforum

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