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Boris Spassky vs Josef Marsalek
WchT U26 07th (1960), Leningrad URS, rd 15, Aug-01
Sicilian Defense: Kan. Knight Variation (B43)  ·  1-0

ANALYSIS [x]

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 2 ·  Later Kibitzing>
Jul-31-13  Nick46: Rats. After being lulled into thinking Qsacs were passé I blew it again today.

Ab Mittwoch macht es kein Spass mehr.
=> As of Wednesday it's no longer any fun.

Jul-31-13  GrandMaesterPycelle: It took me a while, but in the end it a was very simple puzzle - simpler than I expected.
Jul-31-13  morfishine: I see no answer to <21.Qh6>

(1) 21...gxh6 22.Nxh6#

(2) 21...Bf6 22.Bxf6 Qb6+ 23.Nbd4 Qxd4+ 24.Bxd4

*****
PM: Black needs a Knight at either e6 or e8, or a Bishop at f8, or a combination of these to defend; He has none of these

*****
<FSR> No doubt, Spassky relished this victory

*****

Jul-31-13  Nick46: P.S.
A cyclone struck and Marsalek's space shuttle fell off the ramp.
Jul-31-13  Abdel Irada: Black's defense is a Sisyphean one. He can find ways to twist and writhe, but none will help for long, and then he will be back where he started: staring inevitable destruction in the eye.

The longest he can delay mate without cooperation is five moves:

<<•> 21. Qh6!, Bf6

22. Bxf6, Qb6†

23. Nbd4 ... >

Now here is one of those places where, if White is careless, Black gets a few more breaths in him before going down for the third time. After 23. Kh1?!, Nf2† 24. Rxf2, Bxg2† 25. Rxg2, Qg1† 26. Kxg1, Black survives for one more move, and already has lived far longer than he has any right to do.

<<•> 23. ...Qxd4†

24. Bxd4 and mate next move. >

Jul-31-13
Premium Chessgames Member
  Phony Benoni: A famous game with this tactical theme: O Field vs O Tenner, 1923
Jul-31-13
Premium Chessgames Member
  Sneaky: I love this theme. Took me a minute then I finally said "ohhhhhh it's that old trick!"
Jul-31-13  TomOhio: An incredible Black blunder on 20. What if he had played 20.... h6?
Jul-31-13
Premium Chessgames Member
  offramp: < Nick46: P.S. A cyclone struck and Marsalek's space shuttle fell off the ramp.>

I DEMAND a recount!

Jul-31-13
Premium Chessgames Member
  Sastre: <TomOhio: An incredible Black blunder on 20. What if he had played 20.... h6?>

20...h6 21.Nxh6+ gxh6 (21...Kh7 22.Nxf7) 22.Qxh6 Qc6 23.Rf3

Jul-31-13  gars: A very beautiful 21st move I did not see. Shame on me!
Jul-31-13  James D Flynn: White is a pawn down but his Black square B N pn f5 and Q on g5, KR r on the semi open f file all suggest a K-side mating attack is imminent.. 21.Qh6(gxh6 Nxh6# loses instantly and threat Qg7# can only be answered by defending g7) Bf6 22.Bxf6 renewing he threat and there is now now defense if gxh6 23 Nxh8# if gxf6 23.Qg7#.
Jul-31-13
Premium Chessgames Member
  kevin86: I saw a very similar position in a game before, Namely the Field-Tenner game. In that position,three pieces were threatened,but if one if removed,the others checkmate. Here,if the queen is taken,the knight checkmates-otherwise white mates at g7 with the queen.
Jul-31-13
Premium Chessgames Member
  chrisowen: Angel a herded queen back to straight eightball,

ko a 21.Qh6 laps up g7xh6 and bishop knight combine,

to mate book a slot stats for jangled 10.f4 look,

incredible mission to claw back ground alive tomahawk 13.ne2 13...e5 can be nefarious queen honey bee dang look a gift horse fetch farmer nearly a quad grip pocket knight e4 free camoflauge queen a muscle g5 ruddy acumen d4 stand and deliver the quickness a blocks monster up a 21...bf6 dig,

change to be 22.Bxf6 Qb6+ jugged berth have in got.

23.nbd4 and mate in 2 sub a us sac 23...qxd4+ it's,

good you swine garage in amble give good shot a bird in hand 24.Bxd4 gxh6 is worth in bush mill,

24...gxh6 25.Nxh6#.

Jul-31-13  chessplayer24: awesome game!!basically the bishop on d4 and knight on f5 were ready for devastating black's kingside.no move to stop the attack and Qh6 was indeed the best,threatening mate on f7,if f7xQ,then nxh6#
Jul-31-13
Premium Chessgames Member
  doubledrooks: 21. Qh6 leads to mate. For example: 21...Bf6 22. Bxf6 Qb6+ 23. Kh1 Nf2+ 24. Rxf2 and mate is unavoidable.
Jul-31-13  dark.horse: Is there something wrong with the Kan variation? I've seen a lot of thrashings (like this one) lately.
Jul-31-13  BOSTER: <offramp> <In the game Spassky vs Korchnoi 1968 Spassky also does a bit of a queen-hop with 26.Qb6>.

Twenty years before this (1948) Korchnoi beat Spassky in very fashionable style against <a queen-hop>11....Qg4. See the diagram. White to play 12, and black resign.


click for larger view

Jul-31-13
Premium Chessgames Member
  whiteshark: <21.Qh6!> and that's it. Stop, full stop, finish!
Jul-31-13  notyetagm: Spassky vs J Marsalek, 1960

21 ?


click for larger view

Wow, if you know the <MATING PATTERN> known as <BLACKBURNE'S OTHER MATE>, this is a *ridiculosuly* easy problem to solve. It took me all of five second to see that <COORDINATING YOUR PIECES ON THE LOOSE SQUARES NEAR THE ENEMY KING> wins instantly with the simple 21 ♕g5-h6! 1-0.

21 ♕g5-h6! 1-0 <loose sq near king: g7>


click for larger view

A great example of <RELOADING ON A SQUARE LINED UP WITH THE ENEMY KING>.

(CONTINUATION)
21 ... g7x♕h6 22 ♘f5xh6# <reload: h6>


click for larger view


click for larger view

Jul-31-13  notyetagm: Spassky vs J Marsalek, 1960

Another great example of the <BLACKBURNE'S OTHER MATE> mating pattern.

D Stets vs M Oleksienko, 2009

31 ?


click for larger view

31 ♖f1-g1! 1-0 <overloaded: e7 & g1, h6 & g1>


click for larger view

A beautifully example of exploiting not one but *two* <OVERLOADED> defenders to put a piece on a square which appears to be *doubly* protected (<DUBIOUS DOUBLE PROTECTION>).

Black's tactical problem is the <BLACKBURNE'S OTHER MATE> mating pattern. The Black c5-bishop must <PROTECT> the e7-mating square ( 31 ... ♗c5x♖g1?? 32 ♘f5-e7#) while the Black g6-queen must <PROTECT> the h6-mating square (31 ... ♕g6x♖g1? 32 ♘f5-h6#).

(VARIATIONS)
31 ... ♗c5x♖g1?? 32 ♘f5-e7#


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31 ... ♕g6x♖g1? 32 ♘f5-h6#


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Hence Black must lose ♕ for ♖ due to the <PIN AGAINST THE KING>

Jul-31-13  The Last Straw: Kotronias vs D King, 1990
Jul-31-13  Whitehat1963: Easier than yesterday. Surprising for me.
Jul-31-13
Premium Chessgames Member
  gawain: Great puzzle. 21 Qh6! does it. Black is strangely helpless.
Mar-15-14  tranquilsimplicity: One of the best miniature games I have ever seen.#
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