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Mikhail Shereshevsky vs Viktor Kupreichik
Minsk (1976)
Rubinstein Opening (D05)  ·  0-1


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Given 45 times; par: 21 [what's this?]

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 7 OF 7 ·  Later Kibitzing>
Mar-02-12  Ian McGarrett: This is just stupidity and cruel to boot. A problem with no solution. The point being to frustrate players and leave them fed up with game?
Premium Chessgames Member
  Once: <Ian McGarrett> Or you can think of it in zen terms. The only way to win is not to lose.
Mar-02-12  James D Flynn: I analyzed at some length looking for a win for White or at least a clear draw but could find neither, so I did not intend to post. My analysis was mostly on the consequences of 17.Bxh7+ when Kxh7 leads to an endgame that should be won for White and Kh8 wins for Black. I was astonished when the game followed a line of my analysis including the clever Nf3+ which leads to mate. The reason for this post is to point out that 17.Nf3 doesn't draw. 17.Nf3 Nxb7 18.Qxd5 Bxd6 19.Ra2 Re8 20.Bb1 Re2 21.Re1 Rxe1+ 22.Nxe1 Be5 and there is no way for White to force the win of the N on b2, in the meantime Black can play Be6 and R c8 or d8 follow by preparing a pawn thrust on B5 freeing the N. White is simply dead lost.
Premium Chessgames Member
  SuperPatzer77: <Phony_Benoni> LOL - I wish to see this game below:

click for larger view

Let's say to you "April Fool's Day" when we see this game on April 1, 2012.

LOL LOL LOL - See that nobody wins this game. 1/2 - 1/2


Premium Chessgames Member
  agb2002: White is a pawn ahead.

Black threatens 17... Qxh2# and 17... Nxb2.

The white pieces also aim at the enemy king. This suggests 17.Bxh7+:

A) 17... Kxh7 18.Qxd3+ Kg8 19.Qg3 + - [2P].

B) 17... Kh8 18.Qh5

B.1) 18... Qh6 19.Qxh6 gxh6 20.Bxd3 + - [N+2P].

B.2) 18... Qxh2+ 19.Qxh2 Bxh2+ 20.Kxh2

B.2.a) 20... Kxh7 21.Bc3 + /- [P].

B.2.b) 20... Nxb2 21.Bc2 Rd8 22.Nf3 Bg4 23.Kg3 Bxf3 24.Kxf3 + /- [B+P vs N].

The direct 17.Qh5 loses to 17... g6 18.Qh6 (threatening 19.Qg7+ Kxg7 20.Nf5+ Kg8 21.Nh6#, but...) 18... Nxb2 - +.

Mar-02-12  galdur: At a loss on this one.

17.Bxh7+ Kh8 18.Qh5 Nf4 seems to favor black.

Mar-02-12  LoveThatJoker: <sevenseaman> I gave 17. Bxh7+ Kh8 18. Qh5 Nf4 19. c5 Qf6 to Stockfish to analyze for 40 minutes.

Here is what it has come up with

(-1.21) 20. Qf3 Qh4

[(-1.20) 20...Kxh7 21. Nb5 Be5 22. Qe4+ Qg6 23. Qxg6+ Nxg6 24. Bxe5 Nxe5 25. b4]

21. Rfe1 Kxh7 22. Re4 Qg5 23. h4 Qxh4 24. g3 Qg5 25. Rxf4 Bxf4 26. Qxf4 Qxf4 27. gxf4 Bg4 28. f3 Bd7 29. Kf2 Rfe8 30. Rh1+ Kg8 31. Rh5


Premium Chessgames Member
  agb2002: Very instructive. Another lesson about hurrying up.
Premium Chessgames Member
  WinKing: <James D Flynn: The reason for this post is to point out that 17.Nf3 doesn't draw. 17.Nf3 Nxb7 18.Qxd5 Bxd6 19.Ra2 Re8 20.Bb1 Re2 21.Re1 Rxe1+ 22.Nxe1 Be5 and there is no way for White to force the win of the N on b2,>

In your line white can play 20.Re1 instead of 20.Bb1?. After that black's best is 20...Nxc4. The whole line would be:

17.Nf3 Nxb7 18.Qxd5 Bxd6 19.Ra2 Re8 20.Re1 Nxc4 21.bxc4

click for larger view

Even here though black looks pretty good with the two bishops & the better pawn structure.

Mar-02-12  scormus: I've just run this beast by Rybka, and even she had to think about W's best move. Tried both Bxh7+ and Qh5 before settling on Nf3 as the best damage limitation move, more or less the <WinKing> line and a small but discernable edge to B. But needed d=12 to find it.

The only positive I can take is that I tried the same things as the engine before rejecting them.

And this <CG> is what passes for a Friday puzzle?

Mar-02-12  zakkzheng: Then whats the answer?!
Premium Chessgames Member
  Once: <zakkzheng> Any reasonable continuation that keeps white in the game.

The easiest is probably 17. Nf3.

Or there's 17. Qh5 g6 18. Nb5

Or 17. Bxh7+ Kh8 18. Qh5 Nf4

click for larger view

And now either 19. c5 or 19. Nb5 will do. Both give black an edge, but it's not yet decisive. White isn't dead yet.

The important thing is to avoid the game line with 19. Qh4? which loses the queen to 19...Nh3+.

Premium Chessgames Member
  morfishine: <scormus> Neither did I feel that great about this puzzle. However, later I thought that if one could discard both <17.Bxh7+> and <17.Qh5> and realize that <17.Nf3> is best from a positional viewpoint, then one should be satisfied from an analytical perspective. Thats about all I got out of it; but its better than nothing! :)
Premium Chessgames Member
  Penguincw: Right off the bat, I see 17.Qxd3, but when there's a mate threat, you've got to do something about it.

Little ChessPartner thinks 17.♕h5 ♕xh2+ 18.♕xh2 ♗xh2+ 19.♔xh2 ♘xb2 20.♖ab1 ♖d8 21.♘f3 ♖e8 22.♗c2 ♘xc4 23.bxc4, which leaves white up a knight for a pawn.

click for larger view

However, I also looked at 17...g6. The machine came up with 18.♘b5 gxh5 19.♘xd6 ♗xd6 20.♗xd3, leaving black down a pawn and fractured h-pawns, but I think it's still playable.

click for larger view

Mar-02-12  Yodaman: Great puzzle! It's nice to see one in which the obvious puzzle sacrifice is NOT the correct answer.
Mar-02-12  BOSTER: No doubt that black move before the <POTD> position was 16...Nd3 dicovered attack on h2 and with the threat Nxb2.

My guess this is the beginning of the real <puzzle>.

If you evaluate the <POTD> position correctly, you can see white is a pawn up. This doesn't mean that black is lost, and I don't see why white has to lose this game neither.

Let's try.
17.Nf3 Nxb2 18.Qxd6 Bxd6 and now the question is: can white return the piece or not? 19.Ra2 Re8 20. Re1 Bg4 21.Rxb2 Bxa3 22.Rb1 or 21.Rxb2 Bxf3 22.gxf3 Bxa3 23.Rb1. It looks like a draw.

Sometimes the players can afford to make "blunder" to create the masterpiece.

I can't believe, that the great trainer couldn't see couple moves by knight like Nf4 and Nh3.

Mar-02-12  ajile: lol


What a brutal wake-up call.

I went for the 17.Qh5 line but couldn't find the followup.

Mar-02-12  1stboard: It might be white to move, but I like blacks side of the board on this one. Looks like white does not have a real good move.
What is wrong with white playing
17 Nf3 , this prevents the mate. Black then most likely plays 17 Nxb2 White then follows with 18 Qc2. The black knight is trapped and has no good move other than 18 Nxc4 after which white's 19 BxC4 leaves an even game material wise.

Is there any better move(s) than this ???

Mar-02-12  alayo: The joke is on - they should have held off for just one more month and made this the puzzle on April 1!!!
Mar-02-12  M.Hassan: "Difficult" White to play 17.?
White is a pwn up.

Black is threatening mate on h2 and the best way to stop this would be Nf3. Therefore:

17.Nf3 Nxb2
18.Qxd6 Bxd6
19.Ra2 Re8
20.Re1 Nxc4
21.bxc4 g6
22.Raa1 Rb8
23.Bd5 Rxe1
24.Rxe1 Bxa3
25.Re8+ Kg7

click for larger view

I don't see a win for White in this position and now he is a pawn down. I may have missed something. Let's check the game

Premium Chessgames Member
  dzechiel: I looked at this one last night, and then on two occasions today. I never suspected a spoiler, but I was also unable to find a win for white. I finally gave up and just looked.
Mar-02-12  Garech: I agree; a very strange puzzle today. It seems the idea was to find the saving move Nf3 and calculate that allowing Nxb2 was okay. Just odd, is all I can say.


Premium Chessgames Member
  WinKing: <1stboard: What is wrong with white playing 17 Nf3 , this prevents the mate. Black then most likely plays 17 Nxb2 White then follows with 18 Qc2. The black knight is trapped and has no good move other than 18 Nxc4 after which white's 19 BxC4 leaves an even game material wise.

Is there any better move(s) than this ???>

Yes, black has 18...Bg4 which is better than 18...Nxc4.

17.Nf3 Nxb2 18.Qc2 <Bg4>!

Black's threat of mate on h2 is renewed after ...Bxf3

click for larger view

...& if white continues 19.c5 Qf6 20.Bxh7+(20.Bxb7 Rab1 is worse) Kh8 21.Be4 Rad8 22.Rae1 Bxf3 23.Bxf3 Qf4 & black is probably winning.

click for larger view

Mar-02-12  Patriot: White is up a pawn.

Black threatens 17...Qxh2#.

How about 17.Bxh7+? 17...Kxh7 18.Qxd3+ followed by 19.g3 wins a pawn.

17...Kh8 18.Qh5 Nf4 19.Qh4 looks good.

I'm tired--it's been a long day...

Premium Chessgames Member
  morfishine: Black wins

Whats so hard to see about that?


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