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Aliaksandra Khudaya vs Yifan Hou
European Club Cup (Women) (2007), Kemer TUR, rd 1, Oct-03
Nimzo-Indian Defense: Normal Variation. Bishop Attack (E47)  ·  0-1

ANALYSIS [x]

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 2 ·  Later Kibitzing>
May-22-17  Cheapo by the Dozen: A few seconds to find the move.

A couple more to see that it's actually a mate in 2.

A few seconds further to realize that it ISN'T actually a mate in 2. :)

Mate in 3 is just fine.

May-22-17  dfcx: <Cheapo by the Dozen: A few seconds to find the move. A couple more to see that it's actually a mate in 2.

A few seconds further to realize that it ISN'T actually a mate in 2. :)

Mate in 3 is just fine.>

And one more drink later IT IS MATE in 2.

May-22-17  Walter Glattke: 21.Kxh4 or 21.Bxg5 both same mate here.
May-22-17  stst: Hou easy!!

22.....Nxf3+
23.RxN or Kh3 Qxg4#
OR 23.Kxh5 Qf7#

May-22-17
Premium Chessgames Member
  An Englishman: Good Evening: Lovely little victory for my beloved Nimzo-Indian. Puzzled that White didn't play 9.Qxc3.
May-22-17  agb2002: Black has a knight and a pawn for the bishop pair.

The pawn on f3 prevents Qxg4#. This leads to consider 22... Nxf3+:

A) 23.Rxf3 Qxg4#.

B) 23.Kxh5 Qf7#.

C) 23.Kg(h)3 Qxg4#.

May-22-17  AlicesKnight: White's pieces have run off to the Q-side. 22...Nxf3+ not only removes the guard to g4 but also covers the h2 square, so that, whether White captures the N or not, 23...Qxg4 mates (or Qf7). White should have taken the other N on move 22 but instead created a help-mate.
May-22-17  stacase: That took about five seconds.
May-22-17  patzer2: White's game takes a serious turn for the worse with 21. h4, allowing 21...Nxh4! to (-1.75 @ 30 depth, Stockfish 8.)

Instead, 21. Bf1 = to (-0.17 @ 33 depth, Stockfish 8) keeps Black in the game with a near level position.

P.S.: The Monday solution 22...Nxf3+ forces mate-in-one after 23. Kxh5 Qf7# or 23. Rxf3 Qg4# or 23. Kg3 Qxg4#.

May-22-17  ChessHigherCat: I saw 22... Nxf3+ right away, followed by 23 Rxf3 or Kg3/h3 and 24, Qxf3#. The trickiest variant was 23. Kxh5 where I missed the mate in 1 (Qf2#) but found a mate in 23: ...g3+ 24 Kxg3 or Kh3 Qh7#. A lot of possible variants for a Monday/Munday/Moonday
May-22-17  saturn2: After 22..Nxf3+ there is Kg3 Kh3 Kxh5 and RxN but in all 4 ways the queen mates next.
May-22-17  cocker: The combination started on the previous move.
May-22-17  et1: very pretty.
May-22-17  morfishine: Removal of the guard with check <22...Nxf3+> and now <g4> is indefensible

*****

May-22-17  zb2cr: A small removal of the guard does the trick. 22. ... Nxf3+ removes the protecting Pawn, leaving g4 vulnerable.

The simplest line is 23. Rxf3, Qxg4#.

A beautiful side effect of the Knight move is revealed if White plays 23. Kg3 or 23. Kh3. In that case, 23. ... Qxg4# is still mate, because with the Knight still there, the Knight covers a potential flight square at h2.

The trickiest line is 23. Kxh5. Now the Pawn that would enable mate is gone! What's Black to do? Never fear: Black has 23. ... Qf7#.

May-22-17  Iwer Sonsch: It's Monday, so let's look for queen sacrifices:

22...Qxg4+ 23.fxg4 Nxf3+ 24.Rxf3 fails, so let's reverse:

22...Nxf3+ and 23...Qxg4 mates in every variation.

May-22-17  Iwer Sonsch: Except 23.Kxh5 Qf7#.
May-22-17  schachfuchs: yes, like cocker I would suggest 21...Nxh4 for a wednesday puzzle!
May-22-17  kevin86: White chops off the defender of g4- and mates with the queen.
May-22-17
Premium Chessgames Member
  Willber G: <schachfuchs: yes, like cocker I would suggest 21...Nxh4 for a wednesday puzzle!>

But the king is not compelled to take the knight. In fact it is the worst possible move!

May-22-17
Premium Chessgames Member
  chessgames.com: Stockfish provides this line:

<1) -1.47 (26 ply) 21...Nxh4 22.Qe2 Nhxf3 23.Rxf3 Qxg4+ 24.Kf2 Nxf3 25.Qxf3 Qxf3+>

So yes, 21...Nxh4 is the best move after 21.h4? but White might still be able to survive with 22.Qe2. Only after the recapture 22.Nxh4? is the combination incontrovertible.

May-22-17  Iwer Sonsch: <chessgames.com> Still a beautiful puzzle, and winning decent material is often enough towards the end of the week. Take P Carlsson vs I Sokolov, 2011, for example, where the best move leads to a nonsymmetrical = to position that is pretty likely to draw - or was that meant to be a spoiler?
May-22-17  patzer2: What I like about this game is how Black baits a trap with 20...h4!?, and how White falls into the trap with 21. h4? Nxh4! 22. Kxh4? Nxf3+ with mate to follow on Black's next move.

With 21...Nxh4! to , it's almost as if Black is saying "White I'll give you two Knights for a pawn. Oh, by the way, you'll also have to throw your King in to be checkmated as part of the deal."

What's also surprising is how White can avoid 21. h4? and hold it level with the odd looking 21. Bf1 h4+ 22. Kg2 h3+ Kh1 = (-0.11 @ 40 depth, Stockfish 8.)

May-22-17  swclark25: looks like everyone is happy on Monday!
Feb-27-20
Premium Chessgames Member
  WTHarvey: Black mates in 2.


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