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Boris Gelfand vs Peter Svidler
Groningen (1996), Groningen NED, rd 3, Dec-21
King's Indian Defense: Averbakh Variation. Geller Defense (E73)  ·  1-0

ANALYSIS [x]

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 1 OF 3 ·  Later Kibitzing>
Mar-21-06
Premium Chessgames Member
  plang: 23 Be6 is a pretty move.

....8 d5 is an unusual way to play in the Kings Indian; it doesn't seem entirely logical to open the position like this as black is behind in development

Jan-29-10  Skylark: I got today's puzzle at least thank christ, since fxe6 Nxe6 with the threat of Rxc8 is hopeless for black and any other rook move allows Bxf7, and Rxc7 Rxc7 is equally lost for black. I found this subtle move a lot more easily than thursday's so-obvious-that-i-didn't-bother-considering-it move.
Jan-29-10
Premium Chessgames Member
  OBIT: For this puzzle, an idea I saw after maybe three minutes is 23. Be6, and if 23...fxe6? 24. Nxe6 Rg8 25. Rxc8 wins. It looks like Black has to play 23...Rb8, and then I am thinking 24. Bxf7. Except, then I started wondering why I don't just play 23. Bxf7 immediately. It's true 23. Be6 first drives the rook off c8, but is this difference that significant? So, I spent 15 minutes trying to figure out why driving the Black rook to b8 is so important. For example, for a minute or so I thought that after 23. Bxf7 maybe 23...Bh6 gives counterplay, but nope -- now 24. Ne6 Rxc1 25. Qxf6+ mates.

By this time in an OTB game (probably much sooner, actually) I have decided not to dwell on the difference and just played 23. Be6 on general principles -- I think I'd rather see the Black rook on b8. As for the difference between the rook on b8 vs the rook on c8, I don't see it. Maybe I will find out when I post this comment.

Jan-29-10  RandomVisitor: 20...Rad8 21.Qe7 Bg4 and black has a small advantage.
Jan-29-10  patzer2: Gelfand's 23. Be6!! is an outstanding example of a winning in between move (a.k.a zwischenzug or intermezzo).

If White plays the expected 23. Bxf7 , finding a winning continuation gets messy and difficult after 23...Be2! or 23...f5! In response to 23...fxe6??, White wins going away after 24. Nxf6 Rg8 (24...Bh6 25. Nxf8 ) 25. Rxc8 .

Jan-29-10
Premium Chessgames Member
  An Englishman: Good Evening: Yesterday was too easy, today was too hard. Such is chess.
Jan-29-10  zooter: well, f7 is just hanging and I would play 23.Bxf7 though this is "very difficult"...perhaps CG's way of getting back to us for saying "Easy", "Too Easy" all through the week
Jan-29-10  zooter: well, I don't see such a great difference in the rook being on c8 or b8....even <Patzer2> saying 23.Bxf7 Be2/f5 could complicate things doesn't really convince me. Silicon machines, please?
Jan-29-10
Premium Chessgames Member
  OBIT: <Patzer2>I'm also not seeing why 23...Be2 or 23...f5 is the reason why the rook needs to be kicked to b8. After ...Be2, it seems to me White's reply is Rd7 regardless of where the Black rook is stationed. Now, ...f5 is a try I hadn't considered, but again I can't see where the rook on c8 is necessary to play it.
Jan-29-10  Shah Mat: <zooter> well 23.Bxf7 just blows the combination and white's considerable advantage after move 22. after 23.bxf7:

1. (0.95): 23...f6-f5 24.b2-b4 Qa5-a3 25.Bf7-e6 Bg7-f6 26.Qe7-c5 Rc8-d8 27.Be6-d5 b7-b6 28.Qc5xb6 Qa3xb4 29.Rc1-b1 Rd8-d6 30.Qb6xb5 Qb4xb5 31.Nc7xb5 a6xb5 32.Rb1xb5 Rf8-e8

Jan-29-10
Premium Chessgames Member
  al wazir: I didn't see 23. Be6 (a great move), but I think 23. Bxf7 -- which I would almost certainly have played OTB -- wins too.
Jan-29-10
Premium Chessgames Member
  OBIT: OK, after 23. Bxf7 Be2 24. Rd7, maybe the difference is the Black bishop can return to b5, i.e. 24...Bb5, to harass the rook. In contrast, after 23. Be6 Rb8 24. Bxf7 Be2 25. Rd7 Bb5, White simply plays 26. Nxb5.
Jan-29-10
Premium Chessgames Member
  Once: It often happens that a few days of tweazies are followed by an almighty stinker to bring us down to earth.

Today, I didn't come close. The best I could come up with was 23. Rc5, threatening a4 to win the pinned bishop and Rcd5 to double rooks. I knew it wasn't a puzzle-ish move, but it seemed reasonable as black is pretty tied up.

Odd feeling - Monday to Thursday were easy peasy and Friday was ultra difficult, as if the only chess opponents are either patzers or grandmasters. Or, Mon-Thur was like we had all been bitten by a radioactive spider and turned into spiderman, but on Friday we were bitten by a non-radioactive spider and so turned mortal again.

Question - if spiderman's hands are super sticky so he can walk up walls, how can he ever let go of anything?

Jan-29-10
Premium Chessgames Member
  OBIT: <Shah Mat>OK, fine, but then how does White maintain considerable advantage after 23. Be6 Rb8 24. Bxf7 f5?
Jan-29-10  weary willy: Hmmmm. I'd convinced myself that Ne6 was the idea, getting a rook to the 7th if black took ... but I couldn't really make it work.

Of course.

Jan-29-10
Premium Chessgames Member
  Jimfromprovidence: I see why 23 Be6 is good, because it forces the black rook over to b8. This move frees up white's knight, which was pinned because of the rook on c1.

After the text 23…Rb8 24 Bxf7, below, the knight can now get over to e6, threatening both rook and bishop.


click for larger view

The hard part now is that black has a lot of defensive options. If he plays 24…Rfc8, then 25 Be6 looks like it wins at least the exchange.


click for larger view

If black follows with 24…Ba4!?, then that’s a real head-scratcher after 25 b3 Bc6.


click for larger view

Jan-29-10  WhenHarryMetSally: 1000 rating. Not really trying to get betta.

23. Ne6, Rxc1
24. Nxf8, Rxd1
25. Bxd1

And that’s as far as I’m willing to think. I”ll see what move black makes and then respond accordingly. I doubt this is a commonsensical plan, but a plan is better than no plan at all.

Jan-29-10  dzechiel: No time to work on this tonight. And just as well, when I looked at the solution, it was not a move I would have found in anything resembling a short amount of time.
Jan-29-10  WhenHarryMetSally: dzchiel, dzchiel wherefore art thou dzchiel?
Jan-29-10  SamAtoms1980: I spent 30 minutes on this, because I want to keep "so easy, even SamAtoms1980 can get it" week going for as long as possible.

After looking at Bxf7 and Ne6, I finally went for 23 Be6!! The Rook is attacked, and if 23 ... fxe6 24 Nxe6 with too many crushing threats. After Black retreated the Rook, 24 Bxf7 followed and completed the conquest of Svidler. Hava Nagila!

Jan-29-10  quandide: dzechiel, pleased say something abd break your silence, it appears most people are either clueless or misguided today ;)
Jan-29-10  Oliphaunt: <If black follows with 24…Ba4!?, then that’s a real head-scratcher after 25 b3 Bc6.>

I think it's pretty clear cut although it's a few moves deep.

26.Ne6 (26.Rfc8? Be8) Qe5 27.Bxg6! Rg8 28.Rc4 (it is clear that black's days are numbered)

Jan-29-10
Premium Chessgames Member
  sethoflagos: Well, the obvious move is the free take 23. Bxf7 with threat of 24. Ne6. But it's Friday so this will not be the answer. Therefore the task is two-fold: 1) Show that black has a resource to 23. Bxf7
2) Show that black has no resource to 23. Be6! which looks attractive in a fridayish sort of way (23 .... fxe6 24 Nxe6 looks very sharp)

I'm sure Rybka has something better but

23 Bxf7 f5 mobilises DSB and pins Nc7 due to threat of backline mate e.g. 24 Ne6? Rxc1
25 Rxc1 Qd2
26 Rb1 Rc8
27 h3 Rc1+ with .. Be5+ on the horizon. Very nasty.

23 Be6 cannot be taken due to
23 ….. fxe6
24 Nxe6 Bh6
25 Nxf8 Rxf8
26 Rc7 Qxc7
27 Qxc7

.. and if black tries to save Rc8, his backline mating threats evaporate

23 Be6 Rb8
24 Bxf7 Rfc8 (credible)
25 Bb3 f5
26 Nf6 Rg8
27 Ng5 h5 (or Nf7#)
28 Bxg8 Rxg8
29 Rc7 Qxa2
30 Qxg7! Rxg7
31 Rd8 Qg8 (if Rg8 Rh7#)
32 Rxg8+ Kxg8
33 Rc8+ Be8
34 Rxe8#

I am sort of asking myself if Svidler could really see 30. Qxg7! Perhaps there is something quicker and more deadly out there.

Jan-29-10  cLiPPi: I agree with Jimfromprovidence in general terms, but I think there is an improvement.

If black tries something like 24... f5 then I think black is busted after

25. Nxb5! Qxb5
26. Rd7!!

Black has few defensive options.

27... Rg8 fails immediately after 28. Bxg8 Rxg8 29. Rc8!

Bxg6 seems pretty nasty, too, and black has to do something about it.

Jan-29-10  ChessKnightsOfLondon: Mind is blank. I keep thinking a piece going to E6 may win such as the Knight or Bishop but I can't see the line. I can only see Bxf7 which is too obvious to be correct but there we go.
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