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Boris Gelfand vs Sergey Karjakin
World Cup (2009), Khanty-Mansiysk RUS, rd 6, Dec-07
Semi-Slav Defense: Stoltz Variation (D45)  ·  1-0



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sac: 26.Bxg6 PGN: download | view | print Help: general | java-troubleshooting

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 2 ·  Later Kibitzing>
Dec-08-09  ozmikey: <Albertan> I notice your engine gives 25...h5 as a blunder, but it's hard to see what else Black can do - 25...Kg7 26. Rxg6+ loses immediately, and if White is allowed to get in h5 then Black is simply dead lost. 25...Na6 perhaps?

In any event, a very impressive game from Gelfand.

Dec-08-09  shintaro go: I really don't like giving up the Black d pawn in any scenario.
Dec-08-09  stukkenjager: Nice game Boris, but 25.h4 seems a bit slow, why not 25.Bxg6

25.Bxg6 fxg6 26.Qxg6 Rg7 27.Qxh6 Qe7

(27...Kg8 28.Qe6+ Kh7 29.e4!)

28.Qh8+ Kf7 29.g3 looks ok to me.

Dec-08-09  Augalv: Commentary at:
Dec-08-09  YouRang: <stukkenjager: Nice game Boris, but 25.h4 seems a bit slow, why not 25.Bxg6>

I think it's true that he could have played Bxg6 immediately at move 25. Being that he played it on the next move, I presume that Bxg6 was a move he was considering, but had not fully calculated it out.

So he went with 25.h4, which is also a strong move. Strong enough that it really didn't give black time to deal with the threat of 26.Bxg6. Apparently, during the intervening time, Gelfand realized that the bishop sac worked.

The point is that he may have missed the 'best' move on move 25, but it was only 'not best' in the sense that it was slightly slower -- it was just as winning.

Dec-08-09  computer chess guy: 21. ♗e4! is very nice. Engines I've tried like 21. ♘xf7 for quite a while, but it appears ♗e4 is better.
Feb-12-10  notyetagm: Schach 64 Test und Training:

<In Schach Magazin 64, Februar 2010, nimmt GroƟmeister King die Partie Boris Gelfand (2758) gegen Sergej Karjakin (2723) unter die Lupe: >

Feb-12-10  notyetagm: Game Collection: Gelfand's Best Games Featured in GM Danny King's column in Schach, 64 February 2010
Premium Chessgames Member
  ChessHigherCat: Leetz try dees:

25. Bxg6 fxg6 26. Qxg6 Rg7 27. Qxh6 Bxg2 28. c6 Kg8 29. Rg6 Na6 30. Ba5 Qf7 31. Rxg7+ Qxg7 32. Qxg7+ Kxg7 33. Kxg2 Rc8 34. Kf3 Nc7 35. Ke4 Kf6 36. Bxc7 Rxc7 37. Kd5

Leeding to dees:

click for larger view


The problem is that I'm not sure that 27...Bxg2 is the best defense.

Feb-16-19  stacase: 26.Bxg6 & 27.Qxg6 were pretty obvious. Rcd1 was certainly on the "to do" list but I would have diddled around with 28.Qh6+ first.
Premium Chessgames Member
  ChessHigherCat: I looked at the game line and those patzers deviated from my line early on...just kidding, who knows, I'll take a look in the morning.
Feb-16-19  Walter Glattke: Counter attack with 27.-Rg7 28.Qxh6 Rxg2+ and -Qg7, 27.-Rxa2 must not be played.
Feb-16-19  mel gibson: I didn't think that was difficult.
I saw it immediately for the first 3 plies.

Stockfish 10 says:


(26. Bxg6 (♗h7xg6 f7xg6 ♕c2xg6 ♖e7-g7 ♕g6-f6+ ♔f8-g8 ♖d6-d8+ ♕c7xd8 ♕f6xd8+ ♔g8-h7 ♕d8-f6 ♗c6xg2 ♔g1-h2 ♘b8-c6 ♕f6-f5+ ♔h7-g8 ♖c1-g1 ♘c6xb4 ♖g1xg2 ♖g7xg2+ ♔h2xg2 ♖a8-a7 ♕f5xe5 ♘b4-a6 ♕e5-e8+ ♔g8-h7 ♕e8xh5+ ♔h7-g7 ♕h5-e5+ ♔g7-h7 ♕e5-f5+ ♔h7-g7 ♕f5-e6 ♘a6xc5 ♕e6-e5+ ♔g7-g6 ♕e5-g5+ ♔g6-h7 ♕g5xc5 ♖a7-g7+ ♔g2-f1 b5-b4 ♕c5xb4 ♔h7-g6 ♕b4-e4+ ♔g6-h6 ♕e4-f5 ♖g7-g8 ♕f5-e5 ♔h6-g6 ♕e5-e4+ ♔g6-h6) +10.55/35 105)

score for White +10.55 depth 35

Feb-16-19  malt: Went for 26.B:g6 fg6 27.Q:g6 R:a2
(27...Rg7 28.Qf6+ Kg8 29.Rd8+ Kh7 30.Qf5+ Rg6 31.Q:h5+ )


Feb-16-19  7he5haman: How would White continue after 17...Qa5?
Feb-16-19  Walter Glattke: A) 28.Qf6+ Qf7!? 29.Rd8+ Be8 30.c6+ Kg8 31.Qxf7 Kxf7 32.c7 wins B) 28.-Kg8 29.Rd8+ Kh7 30.Qf5+ Rg6 31.Rd6 Qg7 stockfish has it easier after 29.-Qxd8.
Feb-16-19  Gregor Fenrir: <7he5haman: How would White continue after 17...Qa5?>

After 18.Bxb4 Qxb4 19.Nc7 hxg5 20.Rb1 Qd6 21.Nxe8 Rxe8 22.dxe5 Qxe5 (or 22...Qc7 23.exf6 Nxf6) 23.Rxb7 white wins an exchange.

Premium Chessgames Member
  drollere: 26. Bxg6 fxg6 27. Qxg6 was easy to find, even for a duffer like me. but what follows depends on what black does, and Rxa2 does not seem to me to grasp the severity of the situation.
Premium Chessgames Member
  agb2002: White has the bishop pair and a pawn for a bishop and a knight.

White can pin Black's f-pawn with 26.Rf6:

A) 26... e4 27.Bxg6 wins a second pawn (27... Kg7 28.Bc3 fxg6? 29.Rxc6+ wins).

B) 26... Kg7 27.Rxg6+ Kxh7 (27... fxg6 28.Qxg6+ Kf(h)8 29.Qg8#; 27... Kf(h)8 28.Rg8#) 28.Rxc6+ wins.

C) 26... Ke8 27.Rd1

C.1) 27... e4 28.Bxg6 fxg6 29.Qb3, with the threat Qg8#, looks winning. For example, 29... Rf7 30.Qe6+ Kf8 (30... Qe7 31.Qc8+ Qd8 32.Qxd8#; 30... Re7 31.Qg8#) 31.Rd8+ Kg7 (31... Qxd8 32.Qxf7#) 32.Rg6+ Kh7 33.Rh6+ Kg7 34.Qg6#.

C.2) 27... Nd7 28.Bxg6 wins a second pawn (28... fxg6 29.Qxg6+ Kd8 30.Rf8+ Re8 31.Q(R)xe8#.

C.3) 27... Bd7 28.Bxg6 as above.

Premium Chessgames Member
  agb2002: 26.Rf6 loses a lot of advantage due to 26... Nd7, according to Stockfish, but it still is probably winnning.
Feb-16-19  landshark: A rare Saturday point for this shark - I was on the game continuation until move 30 when I veered with Qh8+, which from my vantage of an armchair and a chessboard appears totally winning:

30. Qh8+ Kf7 31. Qxh5+ Kf8 32. Qf5+ Rf7 33. Rd8+ Ke7 34. Qg5+ Rf6 35. R1d6 clearing the house:

36. R8xd7+ Bxd7 37. Qxf6+ Ke8 38. Qh8+ Kf7 39. Qh7+ Ke8 40. Qg8+ picking off the rook with a total win

Feb-16-19  whiteshark: "The simple mathematics concerning the number of attacking and defensive pieces around the black king does not bode well for the stressed monarch."

Lubomir Ftacnik

Feb-16-19  jith1207: <Chris Owen>: what did Keenum do to you?
Feb-16-19  devere: <drollere: 26. Bxg6 fxg6 27. Qxg6 was easy to find, even for a duffer like me. but what follows depends on what black does, and Rxa2 does not seem to me to grasp the severity of the situation.>

Sergey Karjakin is renowned as a defensive player, so I think that 27...Rxa2 was his concession that there was no defense to be found.

Feb-16-19  thisisasign: 22.Ng7 seemed like a blunder to me because it allows the trapping of the White bishop. Little did I (and Gelfand) know...
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