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Ratmir Kholmov vs Alexey Sokolsky
URS-ch qf (1952), Krasnodar URS
Nimzo-Indian Defense: Normal. Ragozin Variation (E51)  ·  0-1

ANALYSIS [x]

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sac: 34...Rxh2+ PGN: download | view | print Help: general | java-troubleshooting

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Kibitzer's Corner
May-11-20
Premium Chessgames Member
  Stonehenge: Why on earth not 28.Rdd1?
Mar-04-21  Walter Glattke: 36.Kh1 Rh5+ 37.Rh2 Rxh2# / 36.Qxf3 Rxf3 37.Bd5 Qc1+! 38.Kh2 Rf1 /36.Qxf3 Qxf3 37.Rd7+ Kh6 38.Bg8 Rh5+ 39.Kg1 Qe3+ wins
Mar-04-21  mel gibson: I saw that in about 20 seconds.
If White doesn't take the Knight
on move 36 it's mate in 2.

Stockfish 13 says:

33... Qc6+

(33. .. Qc6+ (♕c3-c6+ ♖g1-g2 ♖h4xh2+ ♔h1xh2 ♘d4-f3+ ♕d1xf3 ♕c6xf3 ♖d2-d4 ♕f3xa3 ♖d4-d5 ♖f5-f1 ♖d5-d7+ ♔g7-h6 ♗a2-c4 ♖f1-c1 ♗c4-g8 ♕a3-a1 ♖g2-f2 ♖c1-h1+ ♔h2-g2 ♖h1-g1+ ♔g2-h2 ♕a1-e1 ♖d7xh7+ ♔h6-g5 ♖h7-f7 ♖g1-h1+ ♔h2-g2 ♕e1-g1+ ♔g2-f3 ♖h1-h3 ♔f3-e4 ♕g1xg3 ♖f7-f3 ♕g3-g4+ ♖f3-f4 ♕g4-c8 ♖f2-f3 ♕c8-c2+ ♔e4-d5 ♕c2-c5+ ♔d5-e6 ♖h3xf3 ♖f4xf3 ♕c5-c6+ ♔e6-e7 ♕c6xf3 ♗g8-e6 ♕f3-e3 ♔e7-d7 ♕e3-d4+ ♔d7-e7 ♕d4-e5 ♔e7-d7 ♔g5-f4) +6.82/36 107)

score for White +6.82 depth 36

Mar-04-21
Premium Chessgames Member
  agb2002: Black has a knight for a bishop.

White threatens gxh4.

The first idea that comes to mind is 33... Qc6+ followed by 34... Rxh2+:

A) 34.Rgg2 Rxh2+

A.1) 35.Kxh2 Nf3+

A.1.a) 36.Kh3 Rh5+ 37.Kg4 Qe4#.

A.1.b) 36.Kh1 Rh5+ 37.Rh2 Nxd2+ 38.Kg1 Nf3+, followed by the capture on h2 with check, wins decisive material.

A.1.c) 36.Qxf3 Qxf3 wins decisive material.

A.2) 35.Kg1 Nf3+ 36.Kf2 (36.Kf1 Rh1+ wins decisive material) 36... Rxg2+ 37.Kxg2 Nxd2+ wins decisive material.

B) 34.Rdg2 Rxh2+ 35.Kxh2 Nf3+ 36.Kh3 (36.Kh1 Rh5+ 37.Rh2 Rxh2#) 36... Rh5+ 37.Kg4 Qe4#.

C) 34.Bd5 Qxd5+ only drops the bishop.

Mar-04-21
Premium Chessgames Member
  HeMateMe: Got it after seeing the distant queen move. Wasted time looking at Knight forks.
Mar-04-21
Premium Chessgames Member
  hoodrobin: Not so hard.
Mar-04-21  Brenin: Reculer pour mieux sauter. These retreating checks are always harder to spot. Why didn't White play 36 Qxf3, giving up Q for R+N?
Mar-04-21
Premium Chessgames Member
  malt: 33...Qc6+ 34.Rgg2

(34.Rdg2 R:h2+ 35.K:h2 Nf3+ )

34...R:h2+ 35.K:h2 Nf3+ 36.Kh3 (36.Q:f3)
36...Rh5+ 37.Kg4 Qe4#

Mar-04-21  Caissas Clown: I wonder why a player of White's calibre let this be played out to mate , against another fine player ? Was Black in time trouble and White hoped for a mistake ? Or was White in time trouble and did not see the mate ? I guess we will never find out. Other possibility : White was paying homage to a bygone era of sportsmanship , knew it was a forced mate and let Black have his fun ?
Mar-04-21  mel gibson: <
Mar-04-21 Caissas Clown: I wonder why a player of White's calibre let this be played out to mate , against another fine player ? Was Black in time trouble and White hoped for a mistake ? Or was White in time trouble and did not see the mate ? I guess we will never find out. Other possibility : White was paying homage to a bygone era of sportsmanship , knew it was a forced mate and let Black have his fun ?>

We are not told if the game was Blitz or under tournament rules. We'll never know.
I wish more games were played out till checkmate.

Mar-04-21  saturn2: Black wins by a diagonal pin
33...Qc6+ 34. Rgg2 (or Rdg2) Rxh2+
35. Kxh2 Nf3+ 
White has to give the queen in order to stop mate. So the balance is Q+R vs 2R+B
Mar-04-21
Premium Chessgames Member
  chrisowen: Dumb gotcha vindicate Qc6+ gamble aorta it low jail vindicate ovids afford vim position vindicate guv dumb gotcha chagrin cat vat i vow work quirk i fines pines july its tick honza on vim intrepid ace its witsy fine muddles vim prelude revile ovid bluff pg3 found aorta on jains avid cliff muffs hubbub Rd3 fluffs achtung munch drawish vamoose totups glint v iffy gobble abridge vindicate Qc6+ dub;
Mar-04-21
Premium Chessgames Member
  OhioChessFan: <Walter> White has a Rook on d2 to recapture after 36. Kh1 Rh5+ 37. Rh2 Rxh2
Mar-04-21
Premium Chessgames Member
  Jimfromprovidence: I saw 33...Qc6+, but did not see the followup at first as I thought that ...Rh5+ must be part of the answer. But 35...Rh5+, for example, loses to 36 Qxh5, below, so what to do?


click for larger view

So realizing that 35...Nf3+ blocks the queen from covering h5 for the rook check was a nice discovery.

Mar-04-21  Refused: Took me a bit to get it all working. Three candidates 33...Qc6+ 33...Nf3 and 33...Rxh2+

33...Qc6+ 34.Rgg2 Rxh2+ 35.Kxh2 Nf3+

here best is probably to give up the queen with 36.Qxf3 -+ I would try it and hope of black to go wrong with 36....Rxf3? 37.Bd5 which at least gives some hope for survival.

the alternatives 36.Kh1 and 36.Kh3 lead to mate after 36...Rh5+

Mar-04-21
Premium Chessgames Member
  Jambow: Yeah totally missed the queen retreat with +... Couldn't work it out after being oblivious to the first move, go figure. Amazing how quickly the tactical middle game fades when you are not practiced by puzzles or playing. Nice puzzle sort of plays itself when you start with 33...Qc6+
Mar-04-21  TheaN: Pleasantly surprised that going back to this puzzle after vaguely spotting Qc6 and Rxh2, I noticed the potential of Nf3+. Once you have the trio, it plays itself.
Mar-04-21  TheaN: <Stonehenge: Why on earth not 28.Rdd1?> Holy damn I thought this was just criticism on chosen play, but 28.Rdd1 is +6(!) because of the dual threat Rxf2 and Qa8+. White probably got a bit overwhelmed by the potential of Qxf2, but it's completely flawed.
Mar-04-21
Premium Chessgames Member
  perfidious: <mel gibson....We are not told if the game was Blitz or under tournament rules. We'll never know.....>

From the header, this is very clearly a tournament game, from a Soviet championship quarterfinal event. The top finishers in each of these--believe it was typically 4-6 players--moved on to the semifinal stage.

Mar-04-21
Premium Chessgames Member
  hemy: Results of the Soviet championship 1952 quarterfinal, Krasnodar:

http://al20102007.narod.ru/ch_urs/1...

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