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Madina Davletbayeva vs Thi Thanh An Nguyen
Asian Nations Cup (Women) (2014), Tabriz IRI, rd 3, May-24
Sicilian Defense: Canal Attack (B51)  ·  1-0

ANALYSIS [x]

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 2 ·  Later Kibitzing>
Jun-06-14  diagonalley: DOH! ... didn't spot 27.N-K3! (the critical play)... great puzzle
Jun-06-14  gofer: The queen sacrifice, releasing Rc4 for 1 Rc8+ Kg7 2 Rg8+ Kh6, is "obvious". The follow up move that clinches the sequences and seals black's fate is not.

<24 Qxb5!! axb5>
<25 Rc8+ Kg7>
<26 Rg8+ Kh6>
<27 Ne3! ...>


click for larger view

White is threatening the very simple 27 Ng4#! But white is also threatening 27 Nf5+ Rxf5 28 Nxf5+ Kh5 29 g4#! The added beauty of Ne3 is that it covers many of the queen and rooks checking squares!

27 ... Qxb2+
28 Kf3 Qc3?
29 Kg2

27 ... Rh1?
28 Ng4+ Kh5
29 Nxf6+ Kh6
30 Nf5#

27 ... Rg5?
28 N7f5+ Kh5 (Rxf5 29 Nxf5+ Kh5 30 g4#)
29 g4 Rxg4
30 Nxg4 ...

white threatens Nxf6#, but the black queen has no way back to stop this or take Pe4 with check!

30 ... Qxb2+
31 Kf3 Qc3+
32 Kg2

It all looks pretty hopeless for black...

~~~

Hmmm... <Once> would like us to contemplate the queen being returned to fend off mate, but what does this actually leave for black?


click for larger view

White still threatens 33 Nf5+ Rxf5 34 exf5 which is a simple win, so black must give his king an escape square to avoid the swap off on f5. If we avoid ALL variations where black plays Rxf5 exf5 Kxf5 entering into a losing endgame we can quickly get to the following...

30 ... Rg5
31 Nf5+ Kh5
32 Rh8! ...

Black is already losing...

32 ... Kg6
33 Kf3 (zugswang)

32 ... Kg4
33 Rxh7 Rh5
34 Nh6+ Kg5
35 Nxf7+ Kg6
36 Rxh5 Kxh5
37 Nxd6 Kg4
38 a3 b6
39 Kf2 (zugswang)


click for larger view

Put simply, black doesn't have any way forward, the white king can skip between f2 and g2 until black relinquishes control of f3 and from that point on its all down hill...

Jun-06-14
Premium Chessgames Member
  Once: <gofer> loving your final position!

Another way to win from there is for the white knight to sweep up the two b pawns and then run the a pawn. The b pawns either just have to stand there to be taken or they have to shuffle forwards to be gobbled up by the a3 pawn. A gruesome way to die.

I would be tempted to leave the white king where he was (maybe push him to f3 at some point), but to focus on knight moves.

Bottom line: black sacrificing the queen doesn't save the game but it does avoid the mate.

Jun-06-14  Nick46: Thi queen didn't enjoy da horseplay.
Jun-06-14  morfishine: I got <24.Qxb5> axb5 25.Rc8+ Kg7 26.Rg8+ Kh6 but played 27.Nxf6 (instead of the superior game line 27.Ne3)

*****
Giving up the Bishop pair is one thing; Trading off both Bishops for Knights by move 12 made me blink

*****

Jun-06-14  cocker: I saw the right idea but lazily thought that 26 Nf5+ led to mate, missing 26 ... Rxf5. That would have been a bit too easy.
Jun-06-14
Premium Chessgames Member
  perfidious: This is not at all difficult to see for the most part, being a forcing line, though the key is the retreat 27.Ne3, which keeps the enemy king in the vice and is not at all obvious in one's preliminary analysis--ie, before one has got to the puzzle position--when playing 20.c4.
Jun-06-14
Premium Chessgames Member
  perfidious: This is not difficult to see for the most part, being a forcing line, though the key is the retreat 27.Ne3, which keeps the enemy king in the vice and is not at all obvious in one's preliminary analysis--ie, before one has got to the puzzle position--when playing 20.c4.
Jun-06-14  Chess Dad: I saw the first three moves to chase the king to h6, but couldn't see the end from there.
Jun-06-14  TheBish: M Davletbayeva vs T Nguyen, 2014

White to play (24.?) "Difficult"

White is up a piece for two pawns, but it is temporary as Black has bishop pinning rook, so at first glance it is about even. But Black's king position is very weak and if there were a way to get a heavy piece on the 8th rank, you could follow up with a check on g8, driving the king to h6, and then maybe the two knights (and maybe a pawn) can work their magic. That's what let me to look at the queen sac, which seems to be the only real try for anything in this position.

24. Qxb5! axb5 25. Rc8+ Kg7 26. Rg8+ Kh6 27. Ne3 Qxb2+ 28. Kf1 Rg5 29. N7f5+ Kh5 (or 29...Rxf5 30. Nxf5+ Kh5 31. g4#) 30. g4+ Rxg4 31. Rxg4, and Black can only give up the queen with 31...Qc1+ 32. Kg2 Qxe3 33. Nxe3 to prevent the pending mate of 32. Ng7+ Kh6 33. Nef5#.

Jun-06-14  M.Hassan: <SuperPatzer77: <M.Hassan>...27.Rg5???(Blunder) Rxg5>:

Thank you, recording error. I should have written Rg4. 31.Rh4+ proves my recording mistake on move 27. I thought my line works, does'nt it?

Jun-06-14  SuperPatzer77: < M.Hassan: <SuperPatzer77: <M.Hassan>...27.Rg5???(Blunder) Rxg5>: Thank you, recording error. I should have written Rg4. 31.Rh4+ proves my recording mistake on move 27. I thought my line works, doesn't it?>

<M.Hassan> You bet!! 27. Rg4 is not a tempo, but 27. Ne3! is an accurate and tempo move because the knight threatens to mate with Ng4#.

Superpatzer77

Jun-06-14  SuperPatzer77: <TheBish> Your line is 28. Kf1?! - better is 28. Kf3! because the white e-pawn needs protection.

SuperPatzer77

Jun-06-14  erdogankilic: Once: Thanks a lot for your historical and philosophic comments on a chess game.Any other game would not deserve such a comment.The places and the story you told about is in Turkey by the way...
Jun-06-14
Premium Chessgames Member
  kevin86: I saw this one: white can bump the black king to the edge and then with rook, knights,and pawns real him in.
Jun-06-14  eblunt: Got it today yipee , surprised myself on seeing the key 27 Ne3 move. Maybe all this work is paying off !
Jun-06-14  sombreronegro: I see a juicy line with the Queen sac to remove the fish hook on the rook ,Rc8+ and R-g8+ forcing the king on h6 but, its a little murky...N x f6+ attacks the rook and threatens mate...

Time to check..

So my line deviated at 27 Ne3 ... At that point I think I would go for that as well. You get the pawn but Ng4 does not coordinate well ...

Lot of early forcing moves so

Jun-06-14  BOSTER: Couple days ago <Sally Simpson> expressed such opinion: <However going the long way around is also good because you spotted and held together a longer sequence of moves instead of going the easy way>.

This is an interesting idea,but I think disputable. Is any connection with <POTD>? Let's see.

This is the pos. half move before POTD.


click for larger view

Black to play 23...

Let's try to read the black's thoughts.

"I can play 23...Qxe4+ and then I take the rook playing Bxc4. After 23...Qxe4 24.Ne3 Kxe7 25.a4 Bxc4+ 26.Qxc4 Qxc4 27.Nxc4, and black has 3 pawns vs knight ,and playing somewhere "e5" black rook will be activated. This is <the easy way>.

Let's go <the long way>. Because rook on c4 is pinned I have time to take it later, but for appetizer I'll take the rook a1(greediness? Who knows?).

Who wants to count the forced line after 24.Qxb5 playing OTB,this is not a puzzle.

And black decided to play 23...Qxa1 <going the long way>,and lost the game very fast.

Jun-06-14  sombreronegro: <Giving up the Bishop pair is one thing; Trading off both Bishops for Knights by move 12 made me blink>

Not the first time I have seen this:

Your eye's will be a flutter , not only on who was the victim, but in the manner of suffocation by the then ruler of the Chessworld. One of the most remarkable games I can recall...

Also a Sicilian Defense, Canal Attack

Ivanchuk vs Kasparov, 1991

Jun-06-14
Premium Chessgames Member
  offramp: There is a fantastically 19th Century go-hick to this brilliant game.
Jun-06-14
Premium Chessgames Member
  agb2002: White has two knights for a bishop and two pawns.

Black threatens 24... Bxc4+ 25.Qxc4 Qxb2+.

The white rook, both knights and some black pawns can create a mating net. This invites to play 24.Qxb5 axb5 25.Rc8+ Kg7 26.Rg8+ Kh6 27.Ne3, threatening mate in one:

(27.Rg4 Rg5 28.Nf5+ Rxf5 (else mate in two) 29.exf5 and White probably must settle for perpetual; 27.Nxf6 probably also wins)

A) 27... Rg5 28.N7f5+

A.1) 28... Rxf5 29.Nxf5+ Kh5 30.g4#.

A.2) 28... Kh5 29.g4+ Rxg4 31.Nxg4 Qxb2+ 32.Kf3 followed by Nxf6#.

B) 27... Rh1(2,3) 28.N3(7)f5+ Kh5 29.g4#.

C) 27... Rh4 28.N7f5+ Kh5 29.g4+ Rxg4 30.Nxg4 transposes to A.2.

D) 27... Qxb2+ 28.Kf3 Qc3 29.Kg2 Qxe3 30.fxe3 Rg5 31.Nf5+ Kh5 32.Rxg5+ fxg5 33.Nxd6 and White's a-pawn will decide the game.

Jun-06-14
Premium Chessgames Member
  Richard Taylor: I solved this completely although at first I thought White might have to bail out with a draw. Then I saw Qxb5 and went down the line of playing 27. Nxf6 and calculated up to about 15 to 20 moves but it was now 2 am, so in the morning, suspecting an "in between" I found 27. Ne3 and the move back to g2.

In the whole exercise as I used to do, I wrote down the moves on a sheet of paper with a copy of the diagram.

I could see that in the line played it was a forced mate in all variations.

This is unusual for me as I often see clever moves but miss defensive lines.

This was a fascinating game by these women players.

Jun-07-14  Nova: Does anyone know if 17…Kf8 is theory? I imagine it is, as Black must have been certain that the threat of …Qxh2+ would lead to something good. Although Black must have not seen that after 23... QxRa1? that 24.Qxb5! would be the response!

Perhaps 23...Qxe4!? would be better, as after 24. Qe3 (or Ne3 then …Bxc4+) Black can play 24…Bxc4+ followed by ...Bxd5? Any thoughts on this line (or the game line preceding the queen sac)?

Jun-07-14  patzer2: Here's an analysis with the opening explorer and Fritz 12:

<1. e4 c5 2. Nf3 d6 3. Bb5+ Nd7> More popular alternatives are 3...Bd7 as in Karjakin vs Mamedyarov, 2014 and 3...Nc6 as in E Alekseev vs Z Andriasian, 2014. <4. d4 cxd4> More frequently played is 4...Nf6 as in Yifan Hou vs A Ushenina, 2013 <5. Qxd4 a6 6. Bxd7+ Bxd7 7. O-O Rc8 8. Nc3 e5 9. Qb4 Bc6 10. Be3 Nf6 11. Bg5 Be7> Worth considering is the Fritz 12 suggestion 11... a5! when play might continue 12. Qb3 a4 13. Nxa4 (13. Qb4?? d5 ) 13... Bxe4 14. Rac1 Be7 15. Rfd1 Ng4 =.

<12. Bxf6 gxf6 13. Qb3 Qd7 14. Nh4 Rg8 15. g3 Qh3 16. Nf5 Rg5 17. Nd5!> This is the only move to maintain the advantage. <17...Kf8!> This, in turn, is the only move to save Black's game.

For example, Black is busted after 17... Bxd5? 18. Qxd5 Rc7 19. c4 Rd7 20. Rad1 h5 21. c5 Rxf5 22. exf5 Qxf5 23. c6 bxc6 24. Qxc6 Qe6 25. Rd5 Kf8 26. Rfd1 Ra7 27. Ra5 h4 28. Rxa6 Rxa6 29. Qxa6 Kg7 30. Qb7 hxg3 31. hxg3 f5 32. Qd5 .

<18. Nfxe7 Rh5! 19. Rfc1 Bb5?> This move loses immediately. Necessary was the Fritz 12 recommendation 19...Qxh2+!, which complicates and prolongs the game but by no means guarantees Black's survival.

For example, after 19... Qxh2+ 20. Kf1 Qh1+ 21. Ke2 Qxe4+ 22. Qe3 Qc4+ 23. Qd3 Qg4+! 24. Kd2 e4! 25. Qe2! Rxd5 26. Rxd5 Qxe2+ 27. Kxe2 Bxd5 28. c3 Black has two pawns for the loss of the exchange, but his shattered pawn structure leaves White with a strong endgame advantage.

<20. c4! Rxc4 21. Rxc4! Qxh2+ 22. Kf1 Qh1+ 23. Ke2 Qxa1 24. Qxb5!!> This winning Queen sacrifice, which solves the Friday, June 6, 2014 puzzle, is no doubt a surprise Black missed in her earlier calculations.

<24...axb5 25. Rc8+ Kg7 26. Rg8+ Kh6 27. Ne3!> See <Once>'s post for a lucid and entertaining explanation of this brilliant move, which forces win of decisive material due to the dual mate threats 28. Ng4# or 28. N3f5+ Rxf5 29. Nxf5+ Kh5 30. g4#.

<27...Qxb2+ 28. Kf3 Qa3 29. Kg2 Rg5> As <Once> observes, Black can delay mate and prolong the misery with 29... Qxe3 30. fxe3 , when Black will soon be forced to surrender the Rook and go a piece down for an easy White win (e.g. 29... Qxe3 30. fxe3 b4 31. Nf5+ Rxf5 31. exf5 ).

<30. N7f5+ 1-0>

In the final position, Black resigns in lieu of 30...Kh5 (30...Rxf5 31. Nxf5+ Kh5 32. g4#) 31. g4+ Rxg4+ 32. Nxg4 Qh3+ 33. Kxh3 d5 34. Nxf6#.

Jun-07-14  Eusebius: Fantastic entertaining game
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