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Lev Polugaevsky vs Georgy Konstantinovich Borisenko
URS-ch sf (1954), Gorky, rd 11
King's Indian Defense: Orthodox Variation. Classical System Misc. Lines (E98)  ·  0-1

ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
Oct-15-05  KKW: 27... Nxg2! is crushing
May-25-09  ShadowRider: Why not 30.QxB ?
May-25-09
Premium Chessgames Member
  Gilmoy: <ShadowRider: 30.Qxe2> deflects White's Q from triple-defense of g4, which means Black simply trades down 30..Nxg4 etc, with a crushing discovered check or uncontested Qxg4+, when White has no way to trade the Queens off.

The main line is 31.Nxg4 Bxg4 32.Bxg4 Qxg4+ 33.Kf2 <33.Kh1 Qh3+! forking Rf1 with mate in 2> Rf8+ <the sting in the tail> 34.Ke1 Qg3+! <forks Na3, so it's better than 34..Rxf1+ 35.Kxf1 Qg1+ 36.Ke2 Rg2+> 35.Qf2[] <she's doomed regardless, but 35.Rf2?? Qg1+ also drops the R for nothing> Rxf2 36.Rxf2 Rf7 <dogpile> 37.Rc2 Rxf2 38.Rxf2 Qxa3 .

So White must bail out early from that line. But that means letting a Black piece sit on g4 and running K(f2,f3) from its discovered check, and Black still has Rf8 for a 4-on-2 attack down f/g.

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