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Vassily Ivanchuk vs Bu Xiangzhi
Karabakh International (2005), Stepanakert ARM, rd 1, Oct-02
Sicilian Defense: Najdorf Variation. English Attack (B90)  ·  0-1
ANALYSIS [x]

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Kibitzer's Corner
Oct-16-05  benigno: How does white lose here? For example, after
46. Be3 Ke6 47. Bd2 Bxd2+ 48. Kxd2 Kd6 white would seem to have the edge...

Oct-16-05  iron maiden: White lost on time here.
Oct-16-05  benigno: <iron maiden: White lost on time here.>

Ah! Thanks... of course - how does one tell? I had wondered that but assumed they had already made the first time control and had plenty of time still.

Oct-16-05  Whitehat1963: Great game! Too bad it had to end the way it did.
Oct-16-05  iron maiden: <benigno> The report on the tournament site explains the circumstances of Ivanchuk's loss: http://www.karabakh2005.com/index.j...
Oct-16-05  benigno: <iron maiden>: Wow, crazy. Grazie!
Oct-17-05  SEMENELIN: At move 24. Vassily made a great risk by taking the pawn at g7 and at move 25. Bu definitely had a nice response
May-08-06  notyetagm: I was reading Perlo's new book on endgame tactics when I came across a discussion of this endgame.

He writes that <45 ... ♔e6??> is a huge blunder because it allows the winning line <46 ♗b6 ♔d5 47 ♗a5 ♔d4 48 ♔d1 ♔c5 49 a3>. Now Black is helpless to stop White from reaching a winning king and pawn ending after 50 ♗xb4+ ♗xb4 51 axb4+ ♔xb4, where White's protected passed b-pawn will win the game.

Perlo writes that Ivanchuk went into deep thought after 45 ... ♔e6?? and almost certainly found this winning plan because he was reaching out to move his bishop (for 46 ♗g1-b6) when his flag fell.

The correct move for Black to draw was 45 ... ♔c6 since it stops the winning idea initiated with 46 ♗b6 because now the Black king defends the b6-square.

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