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Shakhriyar Mamedyarov vs Beniamin Galstian
EU-ch U18 (2002), Peniscola, rd 1, Sep-29
Benko Gambit: General (A57)  ·  1-0

ANALYSIS [x]

FEN COPIED

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Given 39 times; par: 29 [what's this?]

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 3 OF 3 ·  Later Kibitzing>
Jul-30-14  ColeTrane: with mate coming on Qf7 (or g8). very decent
Feb-15-17  Everett: Nice little combo here. If you haven't seen it, worth a look!
Feb-15-17  parisattack: Very nice!
Apr-07-17  yadasampati: An absolutely fabulous combination, perfectly revealing the potential beauty of chess. Especially 21. Nh5! and 22. Rf7!

I wonder if a computer program sees this combination, starting from move 19. I have serious doubts about that. Could anybody please let me know?

Apr-07-17  diagonalley: wow! ... breathtaking!
Apr-07-17  DarthStapler: I got the first two moves
Apr-07-17
Premium Chessgames Member
  agb2002: The material is identical.

Black threatens Nxc4.

Both the bishop on c4 and the rook on f1 x-ray f7. The queen aims at g6 and x-rays h7. These details suggest, 19.Bxe5+, removing an obstacle and a defender of g6 with tempo:

A) 19... dxe5 20.Nh5+ (20.d6 Bf6 slows down the attack)

A.1) 20... gxh5 21.Rf7+ Kxf7 (21... Kg(h)8 22.Qh7#) 22.Qh7+ Kf8 (22... Kf6 23.Ne4#) 23.d6 and mate in two on f7 or g8.

A.2) 20... Kg8 21.Qxg6+ Kh8 22.Qg7#.

A.3) 20... Kh7 21.Rf7+ followed by 22.Qxg6 and mate next.

A.4) 20... Kh8 21.Qxg6 Bf6 (21... Bf8 22.Rxf8+ and 23.Qg7#) 22.Qxh6+ Kg8 23.d6+ and mate in two.

B) 19... Nxe5 20.Rxe5 dxe5 21.Nh5+ as above.

Apr-07-17  Lambda: Saw most of the ideas, but I couldn't finish it off because I didn't notice that the d-pawn was getting freed and allowing the bishop to help attack the king on f8.
Apr-07-17  devere: <yadasampati: An absolutely fabulous combination, perfectly revealing the potential beauty of chess. Especially 21. Nh5! and 22. Rf7!

I wonder if a computer program sees this combination, starting from move 19. I have serious doubts about that. Could anybody please let me know?>

If I could see it, Stockfish can certainly see it. Once you see the idea of Nh5+ followed by Rf7+, the elimination of the knight from e5 is easy to see. It is beautiful, but not difficult.

Apr-07-17  gofer: Move order is important here. <19 Bxe5 Nxe5 20 Rxe5 dxe5> works, but <19 Rxe5> doesn't because it doesn't necessarily transpose. <19 Rxe5 dxe5> and now Bf4 is simply in the way!

<19 Bxe5 ...>

19 ... dxe5 simply starts the combination one move earlier...

<19 ... Nxe5>
<20 Rxe5 dxe5>
<21 Nh5+ ...>


click for larger view

21 ... Kh7
22 Rf7+ Kh8 (Kg8 23 Qxg6+ Kh8 24 Qg7#)
23 Qxg6 Any move
24 Qh7#

21 ... Kg8
22 Qxg6+ Kh8
23 Qg7#

21 ... Kh8
22 Qxg6 Bf6 (Bf8 Rxf8+ Rxf8 Qg7#)
23 Qxh6+ Kg8
24 d6+ mating

<21 ... gxh5>

<22 Rf7+! Kxf7> (Kg8/Kh8 Qh7#)

<23 Qh7+ Kf8> (Kf6 Ne4#)

<24 Qxh6+ Kg8/Kf7>

<25 d6+! Bd5>

<26 Bxd5#>

Apr-07-17  Abdel Irada: ∞

<<+> Jean-Luc, you're so linear >

This puzzle is spectacular but not particularly complicated.

<<+> 19. Bxe5, Nxe5 >

Since White's idea is to remove the knight from e5 at all costs, ...dxe5 would be too cooperative.

<<+> 20. Rxe5!, dxe5
21. Nh5+, gxh5 >

This is forced. If 21. ...Kh7 22. Rf7+ . If 21. ...Kg8/h8 22. Qxg6 .

<<+> 22. Rf7+!, Kxf7▢
23. Qh7+, Kf8▢
24. d6 >

White mates in two.

Apr-07-17
Premium Chessgames Member
  Richard Taylor: I solved this fairly quickly once I realised the two central knights had to be removed and then inroads with the Nh5+ and also up the sleeve the d6 with discovered and the R going to f7 the Q to g6 or h7 the etc. The B on c4 is essential. It is easy as I did a few times to forget the R on e1 is gone (a common calculating mistake called the "retained image") but White fortunately can mate using the ingress of the White Q and the B on c4.
Apr-07-17
Premium Chessgames Member
  Richard Taylor: In one line also the N on c3 can go to e4 to deliver the coup detat.
Apr-07-17
Premium Chessgames Member
  thegoodanarchist: For those wondering about the possible finish, I think it is:

22...Kxf7 23. Qh7+ Kf8 (...Kf6 24.Ne5#) 24. Qh8+ Kf7 25.d6+ Bd5 26. Bxd5#

Apr-07-17  Willber G: <thegoodanarchist: For those wondering about the possible finish, I think it is:

22...Kxf7 23. Qh7+ Kf8 (...Kf6 24.Ne5#) 24. Qh8+ Kf7 25.d6+ Bd5 26. Bxd5#>

After 26.d6+ black has Kg6.

Apr-07-17
Premium Chessgames Member
  Richard Taylor: <thegoodanarchist> It 22. ... Kxf7 23. Qh7+ and then if Kf8 24. Qh8+ Kf7 25. d6+ Bd5 26. Bxd5 is not mate but check and Black can play Kg6.

The mate is forced by:

24. d6 then if Bd5 25. Bxd5 and Black cant stop mate. I didn't use a board but then double checked it with Winboard. I initially was looking at 24. Qh8 check but it is slower if it wins.

Apr-07-17  patzer2: For today's Friday puzzle solution, the obvious 19. Bxe5+ leads to three consecutive not-so-obvious sham sacrfices after 19...Nxe5 20. Rxe5! dxe5 21. Nh5+! gxh5 22. Rf7+! Black resigns because it's mate-in-four after 22...Kxf7 23. Qh7+ Kf8 24. d6 Bd5 25. Bxd5 Bxd6 26. Qf7#.

The opening features an aggressive counter gambit idea for White in the Benko gambit with 4. Qc2!?, which has given Mamedyarov good results.

According to the computers, 6...Bb7 7. Bxc4 to (+0.55 @ 28 depth, Komodo 10.1) is not Black's best option in this opening line. Instead, the computers prefer 6...Be7 7. Bxc4 exd5 = (0.16 @ 28 depth, Komodo 10.3.)

However, after 6...Be7 7. Bxc4 0-0 = to (0.29 @ 25 depth, Stockfish 8), White won without too much difficulty against a strong opponent in Mamedyarov vs Ngoc Truongson Nguyen, 2013.

Apr-07-17
Premium Chessgames Member
  Richard Taylor: <Willber G: <thegoodanarchist: For those wondering about the possible finish, I think it is: 22...Kxf7 23. Qh7+ Kf8 (...Kf6 24.Ne5#) 24. Qh8+ Kf7 25.d6+ Bd5 26. Bxd5#>

After 26.d6+ black has Kg6.>

Yes. And it is easy to miss that as one can also have a "retained image" there of the pawn still being there so if going for the combo it needs to be calculated carefully or each stage does. Interesting calculation test and if you "fail" it your learn something.

Apr-07-17  mel gibson: I saw the first few moves.
You had to get rid of Black's Knight.
The computer says:

19. Bxe5+ (19. Bxe5+
(♗f4xe5+ ♘d7xe5 ♖e1xe5 ♗e7-f6 ♖e5xe8 ♕d8xe8 ♘g3-e4 ♗f6-d4+ ♔g1-h1 ♕e8-e5 ♘c3-b5 ♖a8-f8 ♖f1xf8 ♔g7xf8 ♘b5xd6 ♗b7xd5 ♕c2-b3 ♗d5xc4 ♕b3xc4 ♕e5-f4 ♘e4xc5 ♕f4xd6 ♘c5-e6+ ♔f8-e7 ♘e6xd4 a7-a6 ♘d4-c6+ ♔e7-f6 b2-b4 ♕d6-d1+ ♔h1-h2) +4.89/18 97)

score = +4.89 depth 18.

However as per the text.
Black cannot take the Rook on move 20.
20...dxe5

20. Rxe5 dxe5 21. Nh5+ (21. Nh5+
(♘g3-h5+ g6xh5 ♖f1-f7+) +M6/13 43)

mate in 6.

Apr-07-17  ChessHigherCat: So what's the easy formula for Fridays? Sac almost every piece on the board in the right order and it's a cinch!
Apr-07-17
Premium Chessgames Member
  drollere: about as close as you can come in chess to a stick of dynamite.
Apr-07-17  protonchess: Note that the tempting d6 instead of Nh5+ wouldn't have worked, due to .. Bf6.
Apr-08-17  yadasampati: <devere> Thanks for your answer, but i do not agree with your statement that if you could see it, Stockfish could certainly see it. After his game against Hikaru Nakamura in the London Chess Classic 2016 (www.chessgames.com/perl/chessgame?gid=1849553), Fabiano Caruana declared that in his preparation his computer did not see 21. Nf5! because it puts too much importance on material balance.

And the following problem is also one where the computer fails: https://www.chess.com/news/view/wil...

Apr-15-17  Moszkowski012273: 15.f5!
Aug-13-18
Premium Chessgames Member
  Messiah: Spotting Rxe5 and the idea of Rf7 (or generally, the pressure on the f-file) were almost obvious, but while I tried to work out moving the queen to the h-file (or seeking for a better place for the Nc3), I completely overlooked Nh5!! - maybe this is another compelling evidence that I am not a grandmaster.
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