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Yifan Hou vs Betul Cemre Yildiz
FIDE Women's Grand Prix Kazan (2012), Kazan RUS, rd 2, Jun-11
Spanish Game: Morphy Defense. Neo-Archangelsk Variation (C78)  ·  0-1

ANALYSIS [x]

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 1 OF 2 ·  Later Kibitzing>
Jun-11-12  luzhin: Very odd. Up until move 13 the players are following the 2007 game Kotronias-Mamedyarov. That game ended 14.Bxd4 Nxd4 15.Bxe4 Bxd1 16.Bxd1 Ne6 17.Nd2 agreed draw. Yifan Hou's 'improvement' 14.Bxg7+ was anything but;and 16.Nd2 was dreadful.
Jun-11-12  notyetagm: Yifan Hou vs B Yildiz, 2012

http://www.chessbase.com/newsdetail...

22 ?


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<22.Qf5! There is no good way to defend f7 since the bishop on c5 needs protection. Rd7 23.Re6 Regains the piece and gives White a winning attack. >

(VARIATION)


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23 ♖e4-e6 <remove guard: c5>


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http://chessbomb.com/o/2012-kazan/0...

<21. Qg4 Qd6 [ <<<22. Qf5 Rd7 23. Re6 Qd3 24. Qxc5+>>> Rd6 25. Re3 Qg6 26. Rae1 h6 27. Bd5 Qg5 28. Re8+ Kg7 29. Rg1 Qxg1+ 30. Kxg1 Rxe8 31. Bxc6 Re1+ 32. Kg2 Re2 33. a3 Rdd2 34. Be4 Rxf2+ 35. Qxf2 Rxf2+ 36. Kxf2 Kf6 37. Ke3 Ke6 38. Kd4 ]X>

Jun-11-12  notyetagm: Looks like Hou Yifan missed <THE UNDERRATED REMOVAL OF THE GUARD> 23 ♖e4-e6.
Jun-12-12  SimonWebbsTiger: 21...Qd6?? handed Hou the game. 22. Qf5
Jun-12-12  galdur: After 22.Qh5 Rd7 then 23.Rd1, instead of Rae1 played, seems to be winning for white.
Jun-12-12
Premium Chessgames Member
  whiteshark: Yildiz is always good for a blunder. Good for her that Hou didn't realise it.
Jun-12-12  luzhin: Yes, after 21...Bxf2! White is fighting to draw.
Jun-13-12  Whitehat1963: One for my collection!
Oct-21-17
Premium Chessgames Member
  al wazir: Black is a piece and a pawn up, but is under some pressure.

I went with 24...Rg8 25. Rg4 (I can't see any other defense) Rxg4 26. Qxg4 Qxd1+ 27. Bxd1 Rxd1+ 28. Kg2 Rg1+ 29. Kxf2 Rxg4 30. fxg4, and now that all those pieces have been traded off, black's extra ♘ and ♙ ensure an easy endgame win.

But alas! 26. fxg4 spoils it.

Oct-21-17  Walter Glattke: Only hopping, after 10 moves still one knight and one pawn ahead as before.
Oct-21-17
Premium Chessgames Member
  JointheArmy: Missed Friday's puzzle, got Saturday's puzzle. That doesn't happen often.
Oct-21-17
Premium Chessgames Member
  WorstPlayerEver: 10 seconds for the doggie of the show to find -the obvious- 24... Rg8 😊
Oct-21-17
Premium Chessgames Member
  WorstPlayerEver: <JointheArmy>

Same here, but I found the friday puzzle rather curious. I didn't even consider Nb6.

Oct-21-17  bcokugras: Congratulations Betul!
Oct-21-17  mel gibson: I didn't see that.
I thought
24...Q x R+ looked good but it wasn't.
The computer says:

24. Rd1 Qg6 (24. .. Qg6
(♕d6-g6 ♕h5-g4 ♖d7xd1+ ♗b3xd1 ♖h8-g8 ♗d1-c2 ♕g6-g5 ♕g4xg5 ♖g8xg5 ♖e4-g4 ♖g5xg4 f3xg4 ♔f8-g7 ♔h1-g2 ♗f2-e1 ♗c2-e4 ♘c6-e5 ♗e4-b7 a6-a5 ♗b7-a6 c7-c6 ♗a6-c8 ♗e1xc3 ♔g2-g3 c6-c5 ♔g3-f4 c5-c4 ♗c8-f5 b5-b4 ♗f5-c2 ♔g7-f6) +5.48/20 212)

score for Black +5.48 depth 20

Oct-21-17  malt: Started with 24...Rg8 25.Rg4

came up with 24...Qg6 25.Qg4 R:d1+ 26.B:d1 Kg7 27.Kg2 Bc5

Oct-21-17  gofer: I looked at the "obvious" <24 ... Rg8>, but discarded it as white can play Rf1 amongst other things and we don't seem to make the best of our massive material advantage (N+P). So, I then looked around for any queen move that still protected my king against any checks, but also threatened either mate or a queen swap.

<24 ... Qg6>

The queen cannot be protected...

25 Rd5?? Qg1#

25 Re5/Rh4 Rxd1+ 26 Bxd1 Qg1#

The queen must move, but must protect against Qg1#

25 Qh3 Rxd1+
26 Bxd1 Qg1#

25 Qg4 Rxd1+
26 Bxd1+ Qxg4
27 fxg4 Bc5 -+

25 Qxg6 Rxd1+
26 Bxd1+ hxg6 (Kg2 Rg1+ 27 Kxf2 Rxg6 -+)
27 Bb6 Bc5 -+

~~~

Yep.

Oct-21-17
Premium Chessgames Member
  Once: Fritzie is saying that either 24...Qg6 or 24...Rg8 would give black a strong advantage of around-5.

In human mode I chose 24...Rg8, but 24...Qg6 seems more forcing. In either case, black dodges the white threats and emerges a piece up.

The biggest challenge seems to be to work through all the white defences for either 24...Rg8 or 24...Qg6.

So I think two solutions today. Either Rg8 or Qg6 ought to bring home the bacon. I marginally prefer Qg6 (and wish I'd spotted it) as it seems a little less hairy.

Oct-21-17  mel gibson: < ONCE - So I think two solutions today. Either Rg8 or Qg6 ought to bring home the bacon. I marginally prefer Qg6 (and wish I'd spotted it) as it seems a little less hairy.>

You're right - the other move
24...Rg8 is equal in power.
The computer DR4 - 64 bit says

(24. .. Rg8
25. Rf1 (♖d1-f1 ♕d6-d3 ♕h5-h3 ♗f2-c5 c3-c4 ♘c6-a5 c4xb5 ♘a5xb3 a2xb3 a6xb5 b3-b4 ♖d7-d4 ♕h3-c8+ ♖d4-d8 ♕c8-h3 ♗c5-d4 ♕h3-h6+ ♖g8-g7 ♕h6-h3 ♕d3-d2 ♖e4-g4 ♕d2xb4 ♕h3-h4 ♕b4-d6 ♖g4xg7 ♗d4xg7 ♖f1-g1 ♕d6-d3 ♕h4-b4+ ♔f8-g8 ♕b4-f4) -5.40/19 293)

score for white -5.40

Oct-21-17  bubuli55: Black is up a piece. 24...Rg8

Very difficult if White has compensation for the piece.

Oct-21-17  clement41: Harmony-wise, 24...Rg8! is so pleasing!
Oct-21-17
Premium Chessgames Member
  thegoodanarchist: Butter Creme defeated Who?
Oct-21-17  malt: <al wazir> Line 24...Rg8 25.Rg4 R:g4 26.Q:g4 Q:d1+ is a good for black

<But alas! 26.fxg4 spoils it>

26.fg4 Qg6 ( Threatening 27...Qe4#)
27.Q:g6 R:d1+ 28.B:d1 fg6

Oct-21-17  lowlife scum: Didn't see 24... Rg8.
Oct-21-17
Premium Chessgames Member
  Jimfromprovidence: I saw 24...Rg8 right away, so I never considered 24...Qg6.

One continuation is 25 Ree1 Bxe1 26 Rxd6 cxd6, where black trades her queen for two rooks.


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Another line is 24...Rg8 25 Rf1 Rg6.


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The bishop is untouchable as 26 Rxf2?? is a forced mate beginning with 26...Qd1+.

25...Rg6 also sets a trap for white's queen. If 26 Qxh7 then 26...Rh6!


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