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Subject: Re: Why did Karpov resigned in this position?

Author: Joachim Rang

Date: 02:47:01 04/23/05

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On April 22, 2005 at 09:29:13, Andrey Popov wrote:

>This is the last position of the last game of Kasparov-Karpov match.
>If Karpov (Black) reaches a draw, he wins the match.
>Of course, White has a huge advantage.
>However, I do not see any way to win.
>5n1k/5Q2/4p1p1/2q1P2p/7P/6P1/5PK1/3B4 b - - 0 64
>[D]5n1k/5Q2/4p1p1/2q1P2p/7P/6P1/5PK1/3B4 b - - 0 64
>Why did Karpov resigned?
>Can anybody see a series of White's moves leading to win after Qc5-b4?
>Engines quickly go to score about +3.00 and stick on it forever.

if you look at the position with a computer and play through the variations it's
not so hard to spot. Blacks queen is bound to the knight on f8 and therefore
can't prevent white from placing its bishop on the b1-h7 diagonal and capturing
the pawn at g6 with the bishop. With two pawns down and a horrible pawnstructure
it is hopeless for black to continue. The only reason why chess programs don't
jump in their eval very soon is that white must handle first various threats
from blacks queen and avoid some stalemate traps. After a bit maneuvering every
program will find the position where it can capture on g6.

regards Joachim



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