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Subject: Re: Karpov-Anand (1): Deep tactics

Author: Jeroen Noomen

Date: 13:29:19 01/03/98

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>
>I looked at this game briefly yesterday. I didn't pay much attention to
>Junior's eval because I think these unable-to-castle positions are very
>difficult for computers and I prefer the judgement of world-class
>humans. Junior was not thinking about 22.Rc8 but I though Anand was
>doing the right thing. I did look into 25.Qxe4 long enough to see that
>it loses.

Several of my programs can't resist 25.... Qxe4, though. It seems to be
a very interesting testposition. The resulting pin is awsome, but the
real 'losses' occur only several moves later. Is there a program that
abandons 25...Qxe4 after some time and sees through?

>
>Today I looked more, and I think Anand indeed missed 22...Ncxe4! It
>takes a pawn, opens the c-file for a later Rc8, creates immediate
>back-rank threats for white and most of all creates many threats against
>the rook f5. The analysis I have is:
>
>22... Ncxe4 23.Bf4 Rc8 25.Qb3 { 25.Qa4 Bc6 26.Qb3 transposes to the main
>line. 25.Qb5+ Kf8 26.Re5 Rc5 black advantage } Bd5 26.Rxd5 Nxd5 27.Re1
>0-0 28.Qxd5+ Kh8 29.Bxe4 Rxf4 looks very good for black.

This line indeed seems to be OK for Black. But knowing Karpov, he will
not play a risky line in such an important game, at the risk af having
a 'hole' somewhere, so I still suspect there has to be an improvement.

>I don't see the point of 25...Rf8 26.Re1 Qe6. This may be an issue of
>evaluation. Junior non-chalantly plays 27.a4 and evaluates it +0.7 for
>white. At one point it jumps up with 27.e5 but then abandons it. This is
>a breathtaking line: 27.e5!? Qxf5 28.exf6+ Kf7 29.Re7+ Kg6 30.Rxg7+ Kh5
>31.h3. Who wins now ? I have no idea.

The point of 25 ... Rf8 and 26 ... Qe6 is to exchange queens by means of
Qb6+ or get the king away by Ke8-f7-g8. 27 e5!? is a very interesting
try, I will analyse this later. Maybe this is the line Anand feared?

>About 26...Kf7: While I respect Anand for playing it, seems no doubt
>that this is the losing move. Qb8 of course (-0.50).

Probably he missed the strenght of Karpov's Qxg7+ later on. The endgame
might be better for White, but I agree Anand should have tried it.

Regards, Jeroen



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