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Viktor Korchnoi vs Ratmir Kholmov
USSR Zonal (1964), Moscow URS, rd 1, Feb-18
English Opening: Symmetrical Variation. Hedgehog Defense (A30)  ·  0-1

ANALYSIS [x]

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Kibitzer's Corner
May-26-08  Marmot PFL: A positional masterpiece by Korchnoi, which he ruins with 33.Qc7?? After 33.Nc2 the passed d pawn would win easily.
Dec-27-11
Premium Chessgames Member
  wwall: 33.Qc7? looks weak, but does 33.Nc2 win easily? Better may be 33.Ne2, threatening 34.Nc3, or if 33...e4, then 34.Nf4. But with 33.Nc2 e4, threatening 34.Qf3+.

Instead of 34...exd4, perhaps better is 34...Qxd6 35.Qxa6 exd4. After 34...exd4, White can now play 35.d7 instead of 35.c5 which seems to give up the pawn. After 35.d7, White threatens 36.Qxa6 and 37.Qc8+.

Instead of 36...Rd8, perhaps 36...Qe6, threatening 37...Qd5+ and 38...d3.

Instead of 37.Rb1?, perhaps better is 37.Rc1! with better drawing chances after 37...Qxd6 (or 37...Rxd6 38.Qxa5 d3 39.Qxc5) 38.Qxd6 Rxd6 39.Rxc5.

Instead of 38.Rb6, perhaps 38.Rb5 or 38.Rc1 and win the c5 pawn after 38...Qxd6 39.Qxd6 Rxd6.

39.Qxa5? allows 39...Qd5+ and 40...d3. Perhaps more resistance after 39.Kf1 (aiming for Ke1 or Ke2 after the queens come off the board) and if 39...Qd5, then 40.Qb7 Qxb7 41,Rxb7, now 41...d3 42.d7 may draw. So, instead of 41...d3, best may be 41...c4 42.Rc7 c3 43.Ke2 and 44.Kd3.

Jan-14-14  spearsr: what's wrong with 29.Qd3?
Dec-04-15
Premium Chessgames Member
  Retireborn: 33.Ne2 as mentioned by <wwall> looks to be the correct winning move: then 33...e4 34.Nf4 Nd3 35.Qe4 Nxf4+ 36.gxf4! Qg6+ 37.Qxg6 fxg6 [37...hxg6 38.Rb1+! & 39.c5 wins] 38.Rb1 Kf7 39.c5 Ke6 40.Rxb6! Rxb6 41.cxb6 Kxd6 42.Kf3; the white king reaches d5 and wins the a-pawn or the K-side pawns.
Sep-24-18  edubueno: Parece que hasta ese momento Jolmov era el rival difícil de Korchnoi, 2 a 0 con 10 tablas.
Jun-18-20  ewan14: I think in his autobiography Victor said he was off form at this time

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