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

Author: Jeroen Noomen

Date: 03:02:51 01/04/98

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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.

How long does it takes Junior to dismiss this move?

>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.

I did some analysis with Rebel 9 and I think that after 22 ... Ncxe4
23 Qb5+ Kf8 24 Be3! is strong. After 24 ... Rc8 Rebel 9 gives 25 Bb3!,
when 25 ... Nd6? seems to fail because of 26 Rxf6+! Qxf6 27 Bc5 with a
lot of trouble.

I don't trust 22 ... Ncxe4, because Black is unable to get his rook from
h8 into play and given time, White continues Raf1, Bd4 crushing through
at f6. Therefore I think Anand's 22 ... Rc8 might be best.

>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.

Actually Black wins in this line. Rebel 9 also likes 27 e5, but in the
final position after 31 h3 Black wins after 31 ... Qf2+ 32 Kh1 Qf1+
33 Kh2 Ne5. So 27 e5 is probably bad, but I like Junior's 27 a4. F.e.:

A) 27 ... Kf7 28 Bxf6 gxf6 29 Rd1 Rd8 30 b4! appears to be good for
White
B) 27 ... Qb6+ 28 Qxb6 Nxb6 29 a5 also seems to favour White
C) 27 ... g6!? (Rebel 9's choice) 28 Rff1 Qe5 stopping e4-e5 with a very
   obscure position.

Who can add more analysis!?

Regards, Jeroen

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



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