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Natalia Zhukova vs Corina-Isabela Peptan
Women's Olympiad (2008), Dresden GER, rd 9, Nov-22
Queen's Indian Defense: Fianchetto. Nimzowitsch Variation (E15)  ·  1-0
Move:
Last:

explore this opening
find similar games 2 more N Zhukova/C Peptan games
sac: 27.Ne4 PGN: download | view | print Help: general | java-troubleshooting

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 1 OF 2 ·  Later Kibitzing>
Dec-16-08
Premium Chessgames Member
  Jimfromprovidence: Move 27 for white begins a decent puzzle.


click for larger view

Dec-27-10  Formula7: 28.Nf6+ Kf8 29.Bh6#
Dec-27-10  stacase: A Rook down and after less than a minute it's obvious that 28 Nf6+ leads to 29 Bh6++
Dec-27-10  M.Hassan: 28.Nf6+ Kf8
29.Bh6#
Dec-27-10  sleepyirv: 28.Nf6+ Kf8 29.Bh6#

Black's king found his way back to e8 after castling and her g pawn ended up on g7 without the bishop being finachetto- chess justice demanded this classic mate (which I don't believe has a name)

Dec-27-10  Nullifidian: No queen sac for Monday? I'm astonished!

28. ♘f6+ ♔f8 29. ♗h6#

Dec-27-10
Premium Chessgames Member
  Phony Benoni: A common pattern in an unusual situation. Here's a more usual sample, from Nielsen vs Ottosen, 1941


click for larger view

After <9...Bxd4>, White has the thematic <10.Qxd4!> when today's mate follows if the queen is taken. Black tried to get out of it with <10...0-0>, but mate in four followed anyway.

Go ahead and find it. You need a little more work on Monday.

Dec-27-10  estrick: Seems that the sacrifice came the move right before the position presented in the puzzle. Black's acceptance of White's rook was a blunder, since it allowed mate in two. And that by a 2400?!
Dec-27-10  tacticalmonster: Nf6+ followed by Bh6#
Dec-27-10
Premium Chessgames Member
  dzechiel: White to move (28?). White is down a rook. "Very Easy."

I'm sure I have seen this ending before. White winds it up with

28 Nf6+ Kf8

forced.

29 Bh6#

A pretty little checkmate.

Dec-27-10  Jamboree: A more interesting question is:

Instead of the losing move 27. ... Nxd6?? (which led to the puzzle position), is there any move which would have saved black from mate or major material loss? Not so easy to find a saving move, off the top of my head. Obviously Nxd6 is the worst of the options, as in the game, but what else does black have? 27. ...Rxd6? leads to disaster after 28. Nxd6+, and black will lose an exchange, a piece, or a rook, depending on which poison he prefers. Moving the N on e7 just loses an immediate exchange (BxR), and moving the N on f5 to d4 lead to the same mate as in the game. But what else is there to do? Any random waiting move allows 28. Nf6+, winning a rook.

Therefore, as far as I can tell, after 27. Ne4! black is lost, and so the problem would have been more interesting and more difficult if it had started exactly one move earlier in the game, after black's 26th move, not after his 27th move. The killer is 27. Ne4!

Dec-27-10
Premium Chessgames Member
  gawain: The combination almost plays itself.
Dec-27-10
Premium Chessgames Member
  lost in space: I love Mondays!

28. Nf6+ Kf8 (only move) 29. Bh6#

Nice little mate, but is it a puzzle?

Dec-27-10  fyad reject: as usual i am the first person to have missed it. considered Nf6 but dismissed it because i did not see the continuation Bh6 mate. instead, wasted a lot of time looking for ways to come out slightly ahead after some stupid Nxd6 or exd6
Dec-27-10  sevenseaman: Wonderful! Its like a coin dropping in the slot machine. Someone invariably finds a connection.
Dec-27-10  fyad reject: i think part of the reason i didnt pursue Nf6 was because i felt that the primary purpose of the knight move was to deliver check, and Nxd6 served that purpose and also took material, while Nf6 merely delivered check without taking material. i did not realize that Nf6 is superior because it is more forcing and leaves black with only one legal response, and furthermore that this forced response pushes the black king deeper under the knight's influence, trapped between two squares attacked by the knight.

but tbh, even though i can say this now, i feel like you could show me this puzzle a thousand times and i still would never get it. i have made hundreds of similar mistakes in the past and seem to have learned nothing from them. by the time another opportunity comes up for me to use this lesson, i am sure i will have forgotten it

Dec-27-10  Arindam Banerjee: Easier than last monday...Nf6+....
Dec-27-10  nisarg1: @phony benoni:
thanks for suggesting the game-
"Nielsen v/s Ottosen"
instructive on how to attack

10 Qxd4 wins the whole match
another futile try for black was: 10..Ng8 11 Qxh8 Be6 (best and worse) 12 Qxg8+ Kd7 13 Bxd8 with black down a queen, rook and a knight

ya, i should have posted it on former game's webpage

Dec-27-10  gmalino: Good morning guys,
white to play, one rook down. So white has to mate or gain more material than this one rook. Or draw, but not on mondays and not in this position. Obviously is
28. exd6
winning a piece, due to the skewed knight on e7.
Nothing more to think about.
Dec-27-10  zooter: Back to chessgames after a long time...hopefully will be regular from now on...

28.Nf6+ Kf8 29.Bh6#

All forced and straightforward mate in 2

Time to check

Dec-27-10  gmalino: ok, there was something more to think about!
:-)
I saw 28. Nf6+ Kf8 but then ignored it because I didn't even think about mate. Ignorant!
Dec-27-10  TheaN: Monday 27 December 2010

<28.?>

Material: Black up, ♖ vs ♗(!)

Candidates: <[Nf6]>

-ML-
In all fairness this puzzle as such as a monday puzzle is not good imo. 27.? should have been Tuesday or Wednesday: perhaps it's not a clear win without 27....Nxd6, didn't analyse it, so that might be the reason.

As we speak, White dominates the dark squares; both Black knights are on dark squares hampering the King's escape as well as guarding only light squares. The White knight, on the other hand, is one move away from controlling the very important vacant light squares. All in all that uncovers:

<28.Nf6 Kf8 29.Bh6 1-0> and this so tightly fitting mate is also a pure one. Good position, less so a puzzle.

Dec-27-10
Premium Chessgames Member
  Once: Interesting stuff. The puzzle is a simple forced mate in 2, yet two of our esteemed colleagues didn't see it. Why so? And how can we help them spot mates like this in the future?

The answer, I think, is that today's position is a little shy. She's a demure librarian wearing trousers, sensible shoes and a buttoned-up blouse. In other words, it looks like there is little chance of mate in the near future.

By contrast mating puzzles usually advertise their availability. We are talking hyper-short skirts, vertiginous high heels and cleavages that you could park your bicycle in. We can normally spot a mating puzzle because the black king is stalemated, his pawn cover is shattered and we have lots of heavy pieces nearby.

But not today. There are no queens and white's rook is a long way from the action. The only attacking pieces we have are a knight and a bishop, which on their own are never enough to deliver mate. Black's king is surrounded by defenders and he isn't stalemated. It all looks very safe. All is safely buttoned up and, although you can't see it, you just know that she is wearing sensible, unexciting and capacious white undergarments about her nether regions.

And that, I think, is why this puzzle could be hard to spot.

But even librarians can have hidden wells of passion. She may be encased in tweed like a medieval knight but for all we know the aforesaid undergarments might be racy little red and black wispy strappings from Agent Provocateur.

So how do you seduce a librarian? There are I think, two approaches.

The first is to ignore the outward trappings of respectability ask her out anyway. As <Patriot> often reminds us, we should examine every check and capture, even if we don't know where it will lead. So from the starting position 28. Nf6+ and 28. Nxd6+ have to be examined. And having looked at 28. Nf6+ it is only a small step to look at 29. Bh6+...

The other approach is to look for the deeply hidden signs of passion. She may be a librarian but did you notice that she is wearing flame red nail polish and the book in the wicker basket of her bicycle is Lady Chatterley's Lover? Or, as some wags would have it, Lady Loverly's Chatter?

The chess equivalent of this is to use pattern recognition to spot that there is something interesting in the position. In the starting position we have an empty fianchetto with an attacking bishop and knight nearby. And that ought to remind us of this fun mate:


click for larger view

Remembering that position should give us a clue that mate could follow if we could get the right combination of bishop and knight into the fianchetto holes at f6 and h6. And where better to start this than by 28. Nf6+?

So there you have it - how to solve chess puzzles by thinking about a librarian's underwear.

Dec-27-10
Premium Chessgames Member
  Gilmoy: The punch line is that White even revealed the diagonal check with <21.Bh6+ Kg8>. Fool me once, shame on <you> --
Dec-27-10
Premium Chessgames Member
  Peligroso Patzer: <Jamboree: A more interesting question is:

Instead of the losing move 27. ... Nxd6?? (which led to the puzzle position), is there any move which would have saved black from mate or major material loss? ***

*** as far as I can tell, after 27. Ne4! black is lost *** >

The Black position seems to be lost even earlier, after <25. Nd2!> (with the idea Nd2-e4 after the exchange of LSBs), so Black's last chance to defend probably would have been <24. ... Ne6>, but even then <25. Rd7> would have been < >, so the defense would still have been difficult.

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