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Shakhriyar Mamedyarov vs Francisco Vallejo Pons
World Blitz Championship (2014) (blitz), Dubai UAE, rd 1, Jun-19
Queen's Gambit Declined: Ragozin Defense. Vienna Variation (D39)  ·  1-0

ANALYSIS [x]

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Kibitzer's Corner
Nov-02-14  apexin: Good sacrificial attack by Memedyarov.
I especially liked 21.f5 opening the lines on the kingside and after that i doubt there was any defence.
Sep-05-15
Premium Chessgames Member
  Penguincw: Hmm. White bishop along the same diagonal as black king. Let's get some pieces out of the way. First move: 24.Nxh6. Second move: I don't know. :)
Sep-05-15
Premium Chessgames Member
  al wazir: After 24...Bxh6 25. Rf6 Be3+ 26. Kh1 Qc7, white can also win with 27. Nxg6 fxg6 28. Qh5+.

But that wasn't my line. I didn't see 25. Rf6.

Sep-05-15  nalinw: I chose 24. Nd6 - opening the pin, cutting off the Queen and threatening Nxe8 or Nxf7. I didn't see that Nxh6 also opens the pin.
Sep-05-15  dfcx: black has an extra pawn, but white has the potential pin along the b1-h7 diagonal and the half open f file to work with.

24.Nd6! threatening both Nxe8 and Nxf7, and even Rxf7 if the bishop moves or gone. It also opens the diagonal and file in one move.

The best black can do is to trade rook for knight.

24...Rxd6 25.exd6 Qxd6

It's not a easy win for white, but definitely an advantage.

If black does not take the knight, such as
A. 24...Bxh4 25.Nxf7 Bxf7 (Bg5 26.Nxg5+, other moves 26.e6) 26.Rxf7+ Kg8 27.e6 and black can't stop mate

B. 24...Rd7 25.Nxe8 Rxe8? 26.Qxd7

There are other ways black can defend but no better than 24...Rxd6

Sep-05-15  dfcx: I totally missed the game line.again failing on Saturday.
Sep-05-15  Checker2: I was liking Nd6, too. But if black simply sacks the exchange RxN, he then picks up the e pawn and how can white proceed? Perhaps with Re1 threatening to sack the exchange in turn, pick up black's bishop and remove f7's defender? Which then removes the pinned knight's defender. Just speculating . . .
Sep-05-15  mikealando: tch tch tch! Chess is beautiful.
Sep-05-15  gofer: The first move is easy...

<24 Nxh6 ...>

1) The black king cannot take...

24 ... Kxh6
25 Nf5+ Kh7
26 Qxg5

with the mate threat of...

27 Qh6+ Kg8
28 Qg7#

2) The black bishop can take, but then this allows Rf6 attacking the queen and that is going to cause huge issues for black...

24 ... Bxh6
25 Rf6 Be3+
26 Kh1 Qc7

...knowing that the seventh rank is the only way back to protect its king. What's next!? Could be...

27 Raf1

3) I am left wondering whether black can defend by attacking the queen...

<24 ... Be3+>
<25 Kh1 Qe6>


click for larger view

But I think <26 Bxg6+> stops that defence!

~~~

Hmmm, too complex to see the clearest defence...

Sep-05-15  morfishine: Black is unable to increase support for the relevant square <g6>
Sep-05-15  patzer2: Not knowing it was actually a blitz game, I instinctively picked 24. Qh4! for my Saturday puzzle solution.

It (24. Qh4!) turns out to be a solid winning alternative to the game move 24. Nxh6!! .

One possibility is 24. Qh5! Rd5

a) 24... Bxh4 25. Qxh6+ Kg8 26. Qg7#

b) 24... Nxh4 25. Nxh6+ (24... Nxh4 25. Nxh6+ (25. Nxh4+ Kg7 26. Rf6! ) 25... Ng6 26. Nxf7+ Kg7 27. Nxg5 Nf8 28. Nf7 Bxf7 29. Rxf7+ Kg8 30. Bh7+ Kh8 31. Bc2+ Kg8 32. Rxf8+ Kxf8 33. Rf1+ Ke7 34. Qf7#.

25. Rae1 Qe6 26. Nf3 Bf4 27. g3 Nxe5 28. Nxe5 Rxe5 29. Qg4 Qg6 30. Qxf4 (+8.54 2 20 depth, Deep Fritz 14).

P.S.: Black's decisive mistake appears to be 22...Bg5? allowing 23. hxg6+ (+2.68 @ 20 depth, Deep Fritz 14).

Instead, 22...gxf5 = appears to hold as play might continue 23. Rxf5! Kh8! 24. Qf4 Bxh4 25. Qxh4 Nh7 26. Rf6 Nxf6 27. exf6 Qe6 28. Re1 Qd5 29. Qg4 Qg5 30. Qe4 Qg8 31. Qf4 Qg5 32. Qe4 Qg8 33. Qf4 Qg5 34. Qe4 = (draw by three-fold repetition).

Sep-05-15  patzer2: In the opening, a good alternative is 6...c5 as in Black's win in Kramnik vs F Vallejo Pons, 2014.
Sep-05-15  wooden nickel: Intuitively, I expected the knight to be cleared... 24.Nd6 looked good for starters but kind of "goes nowhere fast"... the knight sac 24.Nxh6! turns out to be very strong. <patzer2: ... I instinctively picked 24. Qh4! for my Saturday puzzle solution. > 24.Qh5 is a good alternative indeed!
Sep-05-15  Pedro Fernandez: What a combination! I liked but very hard for me. I didn't see 24.Nxh6!, it is not that easy!
Sep-05-15
Premium Chessgames Member
  kevin86: The queen will go soonest! The king is on deck.
Sep-05-15  PJs Studio: This game reminds me of prison break.
Sep-05-15  JRMenezes: Why not 25... QxP?
Sep-05-15  morfishine: <JRMenezes: Why not 25... QxP?> Probably <26.Raf1> and White is accumulating an uncomfortable buildup of forces

*****

Sep-05-15
Premium Chessgames Member
  agb2002: White has a bishop and a knight for the bishop pair and one pawn.

Black threatens Nxe5 and Qxb2.

The white pieces look ready to attack the back king. If the knight on f5 disappeared and Black's dark square bishop is deflected from f6 then Rf6 would be very strong. This suggests 24.Nxh6. I haven't found the time for a reasonably complete analysis.

Sep-05-15  MindCtrol9: My first sought was the key move,but I decided to look for the solution.This is a good attacking to the King.
Sep-05-15  MindCtrol9: I like how White has been concentrated attacking giving Black a headache.It is not easy to play against a human GM (not a program).I say this because I play at Chess.com and I have to play against cheaters must of the time.I do not cheat even knowing they do,but I do good after all.Right now I have 64% of wins which is not bad for an old warrior considering playing cheaters.To be honest,I don't think too much, and if I lost any game it is not going to kill me.I know how I play,especially the endgame.

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