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Boris Katalymov vs Mikhail Kolpakov
Riga (1975)  ·  Queen's Gambit Declined: Modern. Knight Defense (D51)  ·  1-0
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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 4 ·  Later Kibitzing>
Aug-17-11  DarkInception: Sorry, you already posted that while I was typing :)
Aug-17-11  abuzic: <abuzic: After black's 30...Rd8? white could instead of 31.b3 set a mating net with 31.Qd3!
one variation is: 31...Qxf2 32.Rxa7+ Kb8 33.Qa6 Qe1+ 34.Kc2 Qf2+ 35.Kb3 Qxe3+ 36.Ka2 Qe7 37.Qxb6+ Kc8 38.Ra8#.>

After black's 28...Ka8? white could play 29.Qd3! with same mating net!

Aug-17-11
Premium Chessgames Member
  whiteshark: overloaded guards
Aug-17-11  dumbgai: Woohoo, saw it immediately! Very rare for me on a Wednesday.
Aug-17-11  abuzic: <DarkInception: <al wazir: 33. Qg6 Qxf2. If either 34. Qxf7 or 34. Rxf7, then black can give perpetual check.> Although your line is clearly better, after 33.Qg6 Qxf2 34.Rxf7 then 34...Qe1+ 35.Kb2 Qd2+ 36.Qc2 prevents any more checks I believe.> Black can try a trick here:
35...Qxe3+ 36.Kb2?? Qxd4+! and if 37.Ka3?? Qa1+ 38.Kb4 a5#.

(37.Kc2 or 37.Kc1 Qxc5+) and black has good position

(37.Ka2 or Kb1) and black has perpetual

Aug-17-11
Premium Chessgames Member
  morfishine: <33.Qg6> wins instantly. Black's position is pushed off the cliff as the Black Queen is overloaded having to (a) maintain communication with the black rook (b) cover <h8> (a dark square) and (c) cover <c6> (a light square). Tall order thats impossible to meet. Black's rook is attacked twice while the white queen deflects the black queen from covering <h8>. Black has no answer:

(1) 33...Rf8 34.Qxf6 Rxf6 35.Rh8+ mates
(2) 33...Qxg6 34.Rh8+ mates

The final losing try:

(3) 33...Qxf2 tossing the rook and hoping to gain a perpetual; but this is crushed by 34.Qxc6+

Very instructive puzzle.

The "Mother Lode of Overloads"

Aug-17-11
Premium Chessgames Member
  sfm: I knew a guy who, in a situation like after 33.-,Qxg6 34.Rh8+ would interpose queen, rook and knight - and after Rxc8# he'd say something like "A rook and a knight ahead, eh? Well, with that material advantage any idiot can win!"
Aug-17-11
Premium Chessgames Member
  gofer: Sometimes defenses get un-coordinated and are exploited. In this case, white is threatening the back rank mate but black's defenses are co-ordinated. But unfortunately the two pieces doing the defending can be abused by the white queen!

<33 Qg6 ...>

33 ... Qxg6 34 Rh8+ mate in three more
33 ... Rxh7 34 Qe8+ mate in two more

<33 ... Kb8>
<34 Qxf7 Qxf7>
<35 Rxf7 ...>

Black resigns. Time to check...

Aug-17-11
Premium Chessgames Member
  cocker: White would like to play ♖h8+, so can he deflect the Black queen away from h8 & f8? 33 ♕g6 does the trick.
Aug-17-11  ProjectR: I was initially looking at Qa6 looking at moving the queen to c8 for the mate,but totally forgot about blacks knight on b6 ! Whoops !

After a few minutes i realised that Qg6 is winning,i dont think there's anything black can do from there,and a mate looks forced

Aug-17-11  LIFE Master AJ: < Aug-17-11 <morfishine: <<33.Qg6> <wins <instantly. >>>>>

Good analysis, nice post, job well done.

Aug-17-11
Premium Chessgames Member
  sevenseaman: My R at h7 threatens mate from h8. All I need is deflection of the Black Q, the only piece that stops the mate. Q deflection to f5 is not good enough as Black Q will stay on the 'f' file to carry out interference protection of f8 twice. So my Q needs to perish at g6.

<33. Qg6 >

There is no choice for Black but to accept the sac or resign as there is a piece overload. It does not matter which piece Black chooses to take, the one left over is adequate to finish it off.

I can think of a defense but it only prolongs the defeat.

33...Nc8 34. Qxf6 Rxf6 35. Rh8 Kb8 36. Nd7+ forks the Black R and he is left with enough material for an easy win.


click for larger view

A very good POTD. A Q-sac week?

Aug-17-11  Dr. J: <abuzic: 33. Qg6 Qxf2 34. Qxf7 Black can try a trick here: 34...Qxe3+ 35.Kb2?? Qxd4+! [and draws]> (I have corrected the move numbering.)

The ?? is warranted. White could escape perpetual with 36 Kd1 Qg1+ (36...Qxd4+ 37 Nd3) 37 Kc2 Qg2+ 38 Kc3 Qg3+ 39 Nd3

Aug-17-11  AliTervia: If 33. Qg6 Qxf2, then 34. Qxc6+ with mate to follow.
Aug-17-11
Premium Chessgames Member
  David2009: Katalymov vs M Kolpakov, 1975 White 33?

Try 33.Qg6 GOOT! Time to check:
====
Puzzle position is


click for larger view

Crafty End Game Trainer (link http://www.chessvideos.tv/endgame-t...) loses very quickly: 33...Ne7 34.Qxf7 Qxf7 35.Rxf7 Nxc5 36.dxc5 1-0. Kolpakov's 33...Resigns is just as good a defence.

Aug-17-11
Premium Chessgames Member
  David2009: Katalymov vs M Kolpakov, 1975 postscript: On reflection Black could have tried 33...Qxf2! (much better than Crafty EGT's 33...Ne7?) which gives White a chance to go wrong. 34.Qxc6+! wraps it up quickly, but 34.Qxf7? seems only to draw after 34...Qe1+.


click for larger view

Here's a second EGT link to check the variation:
http://www.chessvideos.tv/endgame-t... Enjoy exploring the possibilities.

Aug-17-11
Premium Chessgames Member
  PinnedPiece: Wed Puzzle Time solution goal:

2 minutes

Looked at several ways to get that white rook onto the 8th rank for a back-rank mate with the black king imprisoned on a8. At 1:35 I decided that if the Queen were also a threat, it would be unbeatable....ergo I looked at g6 for the Queen.

Another 15 seconds and I couldn't see a way for black to stop one of three different mating move combinations.

Still a littel surprised to find it was the move played in the game.

Result: Success!

(after yesterday's Tuesday trip-up.)

.

Aug-17-11
Premium Chessgames Member
  waustad: How do I deflect the queen so it doesn't protect h8? Oh!
Aug-17-11
Premium Chessgames Member
  Patriot: Qg6 was my only candidate within 5-10 seconds after seeing the back rank weakness. I spent about 1 minute on this to decide Qg6 must be it because it has multiple threats and to make sure black doesn't have a good reply. But I have to admit that I didn't seriously consider 33...Qxf2 thinking the rook is hanging and dismissed it. As <morfishine> pointed out, 34.Qxc6+! is a killer (not 34.Qxf7, giving black the chance for a perpetual).
Aug-17-11  cyclon: 33.Qg6, Cufflinks.
Aug-17-11
Premium Chessgames Member
  agb2002: The material is even.

Black threatens 33... Rxh7 and 33... Qxf2.

Black's back rank looks weak. Therefore, 33.Qg6, trying to disorganize the black heavy pieces with the double menace 34.Qxf6 (followed by 35.Rh8+) and 34.Q(R)xf7:

A) 33... Qxg6 34.Rh8+ and mate in three.

B) 33... Rf8 34.Qxf6 Rxf6 35.Rh8+ and mate in two.

C) 33... Rxh7 34.Qe8+ and mate in two.

D) 33... Qe7 34.Qxf7, etc.

Aug-17-11  cyclon: <abuzic:> <The best line to avoid direct mate or loss of R or Q is 33...Kb8, but black cannot escape defeat: 33...Kb8 34.Qg8+ Rf8 35.Rb7+ Kc8 36.Qh7 Qd6 37.Rxh7 Rxf2 38.Qb7+ Kd8 39.Qxb6+ winning a piece and mate soon (it is mate in 9 moves).> After your proposal 33. -Kb8 (As an answer to 33.Qg6), IŽd play 34.Qxf7 winning a Rook with NO counterplay for Black.
Aug-17-11  TheTamale: Yay, I got a Wednesday puzzle. Better yet, I got a puzzle where the players' names were Boris and Mikhail. I must be coming along.
Aug-17-11  ventricule: <sfm> <I knew a guy who, in a situation like after 33.-,Qxg6 34.Rh8+ would interpose queen, rook and knight - and after Rxc8# he'd say something like "A rook and a knight ahead, eh? Well, with that material advantage any idiot can win!">

This is hilarious !

Aug-17-11  Creg: White almost has the black king mated.

33.Qg6 Qxg6 34.Rh8+ and mate is on the way

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