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Jun Xu vs Viktor Korchnoi
Biel Interzonal (1993), Biel SUI, rd 1, Jul-16
English Opening: King's English Variation. Closed System Full Symmetry (A26)  ·  0-1

ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
Oct-06-16  Ibisha Biscotto: nice fork.
Jul-02-17  Toribio3: Good vibes from GM Korchnoi!
Jan-11-21  SpiritedReposte: Trying to figure why the crude looking <22. g4> doesn't work in disrupting the knight.

...Qg5 gxf5 Nf3+ kh1 d4 looks interesting.

Nov-04-24
Premium Chessgames Member
  kingscrusher: <SpiritedReposte> That is a good point about 22.g4 - there are remarkable variations but it seems the main point is this position:

22.g4 Qg5
23.gxf3 Nf3+
24.Kh1

Nh4! (stronger than d4)

124: Xu Jun - Viktor Korchnoi 0-1 1.0, Biel Interzonal 1993


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Analysis by Stockfish 17:

1. -+ (-2.82): 25.f3 Qxg2+ 26.Qxg2 Nxg2 27.Kxg2 Rxa3 28.Nb1 Rb3 29.Kg3 Kg7 30.Rc1 Rc8 31.Nd2 Rb2 32.Rfd1 Rxd2 33.Rxc8 Rxd1 34.Rb8 Rg1+ 35.Kf2 Rb1 36.Rxb7 Rxb5

2. -+ (-3.62): 25.f4 Qxg2+ 26.Qxg2 Nxg2 27.Kxg2 d4+ 28.Kg1 dxc3 29.Bc1 gxf5 30.Rd7 Be4 31.Rc7 Ra2 32.Re1 Rc2 33.Be3 Rg2+ 34.Kf1 c2 35.Bxb6 3. -+ (-4.47): 25.Bh3 Qh5 26.f3 d4 27.Bg2 Nxg2 28.Qxg2 dxc3 29.Rd7 Qxf5 30.Rxb7 Rxa3 31.Qf2 Qd3 32.Rg1

4. -+ (-4.54): 25.Rg1 Nxg2 26.fxg6 hxg6 27.Rd4 Re1 28.Rxe1 Nxe1 29.f4 Qf5 30.Qf2 Nc2 31.Bb2 Nxd4 32.Qxd4 Re8 33.Kg1 Qg4+ 34.Kf2 Qh4+ 35.Kg2

5. -+ (-5.43): 25.Bxd5 Bxd5+ 26.f3 Bxf3+ 27.Rxf3 Nxf3 28.Qf2 Rxa3 29.Qxf3 Qh4 30.Rd3 Ra1+ 31.Kg2 Qg5+ 32.Qg3 Qxf5 33.Rf3 Qc5 34.Qf2 Qxf2+ 35.Rxf2 Re5 36.Rd2 Kg7 37.Kf2 Rf5+ 38.Ke2 Ra3 39.Nd5

6. -+ (-6.20): 25.Bf3 Qxf5 26.Bg2 Nxg2 27.Ne2 d4 28.Nxd4 Ne3+ 29.f3 Qh3 30.Rde1 Nxf1 31.Be7 Ne3 32.Bf6 Bxf3+ 33.Nxf3 Qxf3+ 34.Kg1 Ng4 Black has a decisive advantage

(Gavriel, 04.11.2024)

It just shows how that principle of not moving pawns around one's king if one doesn't need to can really create huge opportunities for attack.

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