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Mihail Chommyyev vs Tigran L Petrosian
14th Dubai Open (2012), Dubai UAE, rd 1, Apr-15
Slav Defense: Czech Variation. Classical System (D18)  ·  0-1

ANALYSIS [x]

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sac: 20...Qxg2+ PGN: download | view | print Help: general | java-troubleshooting

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 1 OF 2 ·  Later Kibitzing>
Oct-01-12
Premium Chessgames Member
  Phony Benoni: A little variety for Mondays: the queen sacs are no longer leading to mate.

I'll bet more solvers will look at 21...Rxh2+ before 21...Nxe3+.

Oct-01-12
Premium Chessgames Member
  Gregor Samsa Mendel: I know that I looked at Rxh2+ before I found Nxe3+, which is funny, because had I come across this position in an actual game, I would have found Nxe3+ soon enough and not bothered giving Rxh2+ a second thought.
Oct-01-12  xthred: It's what I thought but why is all hope lost for White? Because of being down two pawns?
Oct-01-12
Premium Chessgames Member
  Gregor Samsa Mendel: <xthred> Two pawns and the exchange.
Oct-01-12  LoveThatJoker: Gotta love GM Tigran L. Petrosian!

<20...Qxg2+ 21. Kxg2 Nxe3+> Black wins due to capturing the Queen via ...Nxd1, and still threatening the h2 square with his Rooks.

LTJ

Oct-01-12  M.Hassan: "Very Easy"
Black to play 20...?
Black has 2 Knights for 2 Bishops.

A royal fork is within the reach:

20...............Qxg2+
21.Kxg2 Nxe3+
22.Kf3 Nxd1
23.Rxd1 Rxh2

Black is now up by a Rook+2pawns for a Knight.

Oct-01-12
Premium Chessgames Member
  FSR: 20...Qxg2+ 21.Kxg2 Nxe3+ 22.K moves Nxd1 23.Rxd1 Rxh2 etc.
Oct-01-12  dzechiel: Black to move (20...?). Material even. "Very Easy."

Well, black can go up an exchange and couple of pawns with

20...Qxg2+ 21 Kxg2 Nxe3+ 22 Kg1 Nxd1 23 Rxd1 Rxh2

I don't see a quick mate or win of greater material.

Time to check.

Oct-01-12  thegoldenband: It seems that if you play chess and your name is Tigran Petrosian, you're destined to dish out queen sacs followed by game-ending knight forks.
Oct-01-12
Premium Chessgames Member
  hoodrobin: A someway nostalgic game...
Oct-01-12
Premium Chessgames Member
  Once: I used to be indecisive, but now I'm not so sure.

I used to be schizophrenic, but we're okay now.

There's a fascinating little effect going on here. Call it a duality, if you want. A mirroring of ideas, a pair of matched pairs. A coincidence wrapped in an enigma and lightly poached in a pan of boiling uncertainty.

First we have the Monday effect. I can't work out whether I love Mondays or hate them. I love the fact that they are easy little amuse-bouches after the challenges of the weekend, but I dislike them for the same reason. There's often not much to get your teeth into. A prawn in a puddle in an achingly wide sea of empty plate which they used to call nouvelle cuisine.

And then there's the Monday kibitzing problem. Page after page of exactly the same combination. It's good to have global synchronicity of chess thinking, but original it ain't. The flipside of this is that it sometimes provokes the more literary of our brethren into flights of fantasy. When the puzzle is barren of complications it leaves more white space to scribble.

Then there's today's POTD. For me, the interesting thing is not the conclusion but the move immediately before the puzzle. Here's the position after Black played 19...Nc4. It's white to play and lose...


click for larger view

White's thought process probably went something like this. I have two threats to contend with. First, black threatens immediate carnage with Nxe3. Secondly, if I defend with something like 20. Qe2, Petrosian will surely play 20...Nd6 followed by one of his knights landing on e4. And that is a yukky thing coated in yukkiness that you've just accidentally dropped in a puddle of even more yukkiness.

So white plays the "tempting" 20. Bb3 which "protects" him against both threats. By pinning the knight, he "prevents" both Nxe3 and Nd6-e4. If left alone, he will chop the knight off next move, to swap off pieces and relieve the cramp in his position.

I feel an acronym coming on. Apologies, but I just can't help myself. Let's call moves like 20. Bb3 a SAM - a smart ass move. We are relying on a tactical trick (a pin) to stop our opponent from carrying out a threat.

And that's where the duality comes in, the ambiguity, the tricksiness. The problem with Smart Ass Moves is that sometimes you can be too clever for your own good. That "pin" on the Nc4 looks pretty irrelevant when black moves both his queen and knight with check.

We need SAMs. Chess would not be chess without tricky little moves that rely on tactics. But we should deploy them with extreme cautions. Just like GOOTs, SAMs are high risk.

Phew. Made it. I managed to get through an entire kibitz without mentioning the Ryder Cup ;-)

Oct-01-12  morfishine: <20...Qxg2+ 21.Kxg2 Nxe3+ 22.Kf3>

*I had a hard time deciding on 22.Kf3, Kf2, or Kg1. 22.Kf3 is "probably best" but White is lost in all cases since he lacks 1-tempo to defend his h-pawn

<22...Nxd1 23.Rxd1 Rxh2>

Black is up an exchange plus 2-pawns with a winning position.

Oct-01-12  abuzic: 20...Qe4 also wins
21.Bxc4 Qxe3+ 22.Kh1 Ng4 23. Rcc2 Nxh2 24.Rxh2 Qxg3 25.Qe2 Rxh2+ 26.Qxh2 Rxh2 27.Rxh2 Qxf4


click for larger view

Compare to the other line:
20...Qxg2+ 21.Kxg2 Nxe3+ 22.Kf3 Nxd1 23.Rxd1 Rxh2


click for larger view

Oct-01-12  morfishine: <Once> or is it twice? You just had to mention the Ryder Cup...:)
Oct-01-12  The HeavenSmile: Not exactly 'very easy'. I'd like to see anyone sub 1400 solve this in a respectable time. Took me over a minute
Oct-01-12
Premium Chessgames Member
  Once: Don't mention the war. I did it <once> but I think I got away with it...
Oct-01-12  captainandrewwiggins: Petr-ifying sac on "Mi" King!
Oct-01-12  Abdel Irada: <Forky Park>

This murder happens in Dubai, not Moscow, but White is no less dead after losing the exchange and two pawns as follows:

<20. ...♕xg2†
21. ♔xg2, ♘xe3†
22. ♔f3, ♘xd1
23. ♖xd1, ♖xh2<>>

Oct-01-12  Abdel Irada: For anyone who's interested in yesterday's (genuinely "insane") puzzle, I've posted a solution — in six parts — on this page: P Nikolic vs M Gurevich, 1993.

If you can wade through all of that, I'd be interested in hearing about anything I may have missed (which may well be a lot, given the nature of that puzzle).

Oct-01-12
Premium Chessgames Member
  whiteshark: <20...Qxg2+>, and tha'ts it.
Oct-01-12
Premium Chessgames Member
  Oxspawn: If this is very easy, then I am very slow. I feel sure that it must start with a queen sacrifice, and not just because it is Monday, but I cannot find a clear win.

<20. Qxg2+
21. Kxg2 Nxe3+
22. Kf3 Nxd1
23. Rxd1 Rxh2>

Looks like a won game (the exchange and two pawns up) but is not mate. <21. Rxh2+ allows Kf3> and I can’t see a way to winkle out the king before the white queen becomes active. A bad way to start the week.

Oct-01-12
Premium Chessgames Member
  Oxspawn: Oxspawn: What is worse, not knowing how to win or not knowing when you have won? If I had been the champ and Chommyy had played on, I'd probably have ended up as the chump. I take no pleasure in having "got it", even if the game score was (to pluck two random numbers out of the air) 14.5-13.5
Oct-01-12  zb2cr: 20. ... Qxg2+; 21. Kxg2, Nxe3+ and Black recovers his sacrificed Queen and comes out up by the exchange.
Oct-01-12  Abdel Irada: <Oxspawn>: I think you're being too hard on yourself. After all, the object of these puzzles is simply to find the best continuation, not to prove a forced victory.

Clearly, you easily found a sacrifice that leads to gaining the exchange and two pawns, a "four-point" plus. I fail to see what's the matter with that.

Oct-01-12
Premium Chessgames Member
  agb2002: Black has two knight for the bishop pair.

The immediate 20... Nxe3 is met with 21.Bxd5 Nxd1 22.Bxe6+ fxe6 23.Rxd1. However, 20... Qxg2+ 21.Kxg2 Nxe3+ 22.Kf3 Nxd1 23.Rxd1 Rxh2 - + [R+N+2P vs 2B] achieves a winning endgame.

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