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Gennadi Kuzmin vs Viktor Korchnoi
Grandmasters-Young Masters (1970), Sochi URS, Oct-??
Nimzo-Indian Defense: Reshevsky Variation (E46)  ·  1-0



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Kibitzer's Corner
Jul-30-03  xu fei: Can black continue with 56...b2 57.Rxf7+ Kc6 58.Qf4 [58...Rc1 59.Rf8 Qe1+ 60.Rxe1 Rxe1+ 61.Kh2 b1=Q 62.Rc8+ Kb7 ] 58...Qe2 59.Qf1 Qxd1 60.Qxd1 Rc1 ? I don't see how white wins in the final position.
Jul-31-03  Cyphelium: xu fei> I think 56.-b2 57. Rxf7+ Kc6 58. Qb3! settles the issue., thanks to the double threat on b7 and on c2. (58.- Rxg2+ 59. Kxg2 Qg4+ 60. Kf1 and blacks runs out of checks.)
Jul-31-03  xu fei: <Cyphelium> 58.Qb3 Qxf7
Premium Chessgames Member
  Honza Cervenka: <xu fei> 58.Qb3 Qxf7 59.Qxc2 is clearly better for white, but <Cyphelium> why not 58...Rxg2+ 59.Kxg2 Qg6+ 60.Kh1 (60.Kf1 Qxf7+) 60...Qh5 61.Kg2 Rg6+? It looks like a winning attack of black. And why not simply 56...f6? If the result is correct, then I guess that black exceeded time. The final position does not seem to be clear.
Jul-31-03  xu fei: How about 58.Qb3 Rxg2+ 59.Kxg2 Qxf7 and if 60.Qxb2 Rg6+. Wouldn't black be winning then? In any case, I'm sure Honza is right, it looks like black's clock ran out.
Jul-31-03  Cyphelium: xu fei & Honza> You are right. Sloppy analysis by me, as usual.
Premium Chessgames Member
  Honza Cervenka: <xu fei> I had the idea after 56...b2 57.Rxf7+ Kc6 58.Qb3 Rxg2+ 59.Kxg2 to continue 59...Qg6+ 60.Kh1 Qh5+ 61.Kg2 Rg6+ 62.Kf1 Qh1+ 63.Ke2 Re6+ 64.Kd2 Qh2+ 65.Kc3 Re3+ 66.Rd3 Rxd3+ 67.Kxd3 Qh3+ 68.Kc2 Qxb3+ 69.Kxb3 b1=Q+ , but simple 59...Qxf7 60.Qc2+ Kb7 61.Qxb2+ Rb6 with next 62...Rg6+ works too.
Premium Chessgames Member
  Straclonoor: <I don't see how white wins in the final position.> I'm surprized too why Korchnoi resigned in final position.

Analysis by Stockfish 051020:

-+ (-7.28): 56...b2 57.Rxf7+ Kc6 58.Qd3 Qe2 59.Qxe2 Rxe2 60.Rb1 Rde6 61.Kh2 Rg6 62.Kh3 Rgxg2 63.Rbf1 Rg6 64.Rb1 Re8 65.Rh7 Re3+ 66.Kh2 Re2+ 67.Kh3 Rgg2 68.Ra7 Kb5 69.Rb7+ Kc4 70.Rf1 Rd2 71.Rb8 Rdf2 72.Rb1 Kc3 73.Rc8+ Kb3 74.Re1 Rg6 75.Re3+ Ka2 76.Ra8+ Kb1 77.Re1+ Kc2 78.Rc8+ Kd3 79.Rd1+ Rd2 80.Rf1 Kxd4 81.Rb8 Kc3 82.Rf7 Kc2 83.Rc8+ Kd1 84.Rb8 Rg5 85.Rf4 Kc2 86.Rc8+ Kd3 87.Rb4

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