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Viktor Kupreichik vs Yuri S Razuvaev
Vilnius URS ch (1980), rd 3
Spanish Game: Closed Variations (C84)  ·  1-0


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Kibitzer's Corner
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Premium Chessgames Member
  Sleeping kitten: After 29. ♖xg6+ fxg6 30. ♕xg6+ ♔h8, White needn't play 31. ♕xe8+ and can choose 31. ♘f6. The threat 32. ♕h6+ looks like compelling Black into 31... ♕xf6 (31... ♕d2 32. ♕xe8+ ♔g7 33. ♘h5+ and 34. exf5 is certainly not to be contemplated). Then, 32. ♕xf6+, 33. ♖e3 and White wins. But of course, 29. e5 is neater.
Premium Chessgames Member
  Eggman: I was inclined toward 1.Rxg6+ fxg6 2.Qxg6+ Kh8 3.Nf6 (threatening 4.Qh6+) Qd2 4.Qxe8+ Kg7 5.Nh5+ (actually, I see now that 5.exf5! is much stronger) Kh6 6.exf5, but of course 1.e5 is much simpler. This is perhaps an example of the Einstellung Effect:
Aug-14-12  FrogC: Unusually for me,I found this one straight away. Saw that Nf6 would be mate if it wasn't for the queen,qand that e5 would shut her out.
Premium Chessgames Member
  paulalbert: Free access to the f6 square for the white N was what my fantasy position was. All of a sudden e5 emerged as the perfect solution. Like others, I got diverted initially for a few seconds on Rxg6ch.
Aug-14-12  David2009: Kupreichik vs Razuvaev, 1980 White 29?

Missed it! (I have edited my comments analysing the obvious 29.Rxg6+). Here's the puzzle position

click for larger view

with its link to Crafty End Game Trainer:

Against 29.Rxg6+!? the combative robot defends brilliantly and White must play precisely to win (first time round I messed it up simplifying too early). Against 29.e5! there is no story: the robot surrenders its Q to delay mate.

Aug-14-12  awfulhangover: <lost in space:

<<Marmot PFL>: 29 e5 is decisive, although I wasted a minute or so looking at 29 Rxg6+>

Me too>

Me too!

Premium Chessgames Member
  kevin86: e5! White threatens mate by blocking the queen. Black has no defense!
Premium Chessgames Member
  LoveThatJoker: <David2009> I beat crafty on my first try with my solution post's 29. Rxg6!

Crafty tried the following against me (it will try the following against you as well obviously) 29. Rxg6+! fxg6 30. Qxg6+ Rg7 31. Nf6+ Qxf6 32. Qxf6 Ba8 33. Qxd6 c3 34. bxc3 Nc4 35. Qxa6 Bxd5 36. Qb5 Bf7 37. Qxb3 Ne3 38. Qxf7+! Kxf7 39. Rxe3.

And I went on to convert the easy technical endgame.

29. Rxg6! is a winning solution for today - so long as you got the correct sequence of moves in your solution post, then you claim the full point/having found the correct answer today!


Aug-14-12  Alex56171: I saw e5 and some possible black answers, but didn't see 29. ... Qh4 that puts more resistance, but also doesn't avoid mate.
Premium Chessgames Member
  chrisowen: Torque in h6 and h7 i vested interest it rookg3 in provides back up,

so interference pe5! cuts black into as tide swings in whites favour

nf6 giving mate at e8 or donkey queen sac h4 only postpones

inevitable undulate rooke6 doesnt stop pressing knightf6 wins nearly

all tries for fog has descended e5p heats up whites surge winning by


Premium Chessgames Member
  James D Flynn: White s a piece down but has obvious chances against the Black K by Rxg6+: 29.Rxg6+ fxg6 30.Qxg6+ Qg7(if Rg7 31.Nf6+ Qxf6(if Kf8 32.Qxe8# or Kh8 32,Qh6+ Rh7 33.Qxh7#)32.Qxf6 (threat Qc3 and the N has no retreat but Bxd5 33.Qc3 leaves the B also en prise) Bc8 33,Qc3 Nb7 34.exf5 and White has Q for R and N plus 4 passed pawns on the K side) 31.Nf6+ Kh8 32.Qh5+ Qh7 33.Nxh7 Rxh7 34.Qxe8+ Kg7 35.Qe7+ Kxg6 36.exf5+ Kh6 37.Re6+ Kg5 38.Qxh7 and the Black K is in a mating net.
Premium Chessgames Member
  poszvald: I'm curious what would have happened after 25, ..f6 instead of Re8?

I think with that black can hold surely at least draw, or if white makes a small mistake can win the game as well!!!

Aug-14-12  gambler: Many good moves here:

a forcing variation first:

1. Rxg6+ fxg6 2. Qxg6+ Qg7 3. Nf6+ K move 4. Qxg7+ Kxg7 5. Nxe8+ K move 6. Nxc7

And the game is pretty much won.

However, I think there is also a mate:

1. e5!
And I think there is no way to defend Nf6! which leads to mate.

sooooo... e5 it is, but I think Rxg6 is also winning....

Let's check

Premium Chessgames Member
  James D Flynn: The game continuation 29.e5 appears less strong than the immediate Rxg6+ because after Rxe5 30.Rxg6+ fxg6 31.Qxg6+ Rg7 32.Nf6+ Kf8 there is no mate on e8. White can of course win the R by 33.Qxd6+ Kf7 34.Qxe5 Qxe5 35,Rxe5 Kxf6 and Black remains a piece up with the mating threats gone. Iíll check the other Kibitz to see if there is an explanation,
Premium Chessgames Member
  LoveThatJoker: <James D Flynn> 29. e5! leads to a more efficient win for White.

29. Rxg6! also is fully winning, although the win will come in the endgame as opposed to the middlegame.


Premium Chessgames Member
  James D Flynn: OOPS! i totally missed the immediate Nf6# without any exchange sac.
Aug-14-12  gambler: forgot one defensive line against Rxg6 but my assumption that it is indeed a powerful move is correct.

e5 is the better move tho, as stated.

Aug-14-12  bachbeet: I thought the move was Rxg6+ but saw it as only a material gain and no looming mate. I thought there must be a better move but failed to see how to set up Nf6.
Premium Chessgames Member
  xthred: Got it.
Premium Chessgames Member
  alphee: It took me some time to spot e5 that remove the defending queen .... :-( and I many focused on Rxg7 ... Obviously there is room for improvement.
Aug-14-12  lzromeu: not so easy.
This interposing isn't an intuitive move
I need a few minutes to see moves like this
Aug-14-12  David2009: Kupreichik vs Razuvaev, 1980 postscript: <LTJ>, you (and others independently) have discovered and posted the two most efficient wins (A) 29.e5! (best) and (B) 29.Rxg6+!? fxg6 30.Qxg6+ Rg7 31.Nf6+! (second best). But there is a third and much less efficient win: (C) 29.Rxg6+ fxg6 30.Qxg6+ Rg7 31.Qxe8+!? Kxh7 32.Qh5+ Kg8 33.exf5 to reach with Black to play:

click for larger view

Like <Patriot>, who has posted the very same line as analysis from the puzzle position, I judged that this should be won for White.

The EGT now hits me with 33...Rxg2+! First time round I was so shocked that I swapped Queens at the first opportunity (being by then nominally material up), whereupon the EGT proceeded to give me a master class in how to mobilise a Pawn majority when the exchange down. [You might like to try the variation to see the resources available to Black]. Second time round I played more intelligently and duly won.

Crafty EGT link repeated from my earlier post for convenience:

Premium Chessgames Member
  LoveThatJoker: <David2009> Awesome!

I actually played your and Patriot's line on the Crafty EGT link and got an even faster win than my easily won technical ending:

I played 33...Rxg2+ 34. Kxg2 Qxd5 35. Be4 Qf7 36. Qg5+ Qg7 37. Qxg7+ Kxg7 38. Bxb7 Nxb7 39. Re7+

That was fun! This puzzle is pretty cool in that there are three possible solutions!


Premium Chessgames Member
  Castleinthesky: Missed it! I also went for 29.Rxg6+ A little trickier than the usual Tuesday.
Aug-14-12  I Love You: Gotet! I'm also looking for Rxg6 but Black can't mate. Nf6+ will be taken by Queen, so, e5! is the winning move, White mating attack is unavoidable. 1. e5 ♕xe5 2. ♖xe5 f6 3. ♘xf6+ ♔f7 4. ♕xg6+ ♔f8 5. ♕xe8/♖xe8/♕g8+ mate
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