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Subject: Re: Horizon-KOK, speculative play ...

Author: Peter McKenzie

Date: 03:39:47 05/15/02

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>A few questions/comments:
>
>A) Is KOK's 19... Nxb2?! a correct sacrifice? Or should the solid 19... Nxe3
>have been played?

My program Warp likes Nxb2 after about 10seconds (PIII 1ghz), and sticks with it
with a slightly positive score.

>B) Is Hori's 24. Rh3!? a valid defense? Or should the prosaic 24. axb3 have been
>played?

Warp prefers Rh3 but has black at about +4.  24.axb3 seems be lose to Nc5, I get
+6 for black pretty quickly.

>C) In this position:
>
>[D] r3k2r/B2n1pp1/7p/1B1Pp3/1K4PP/2R5/P4Q2/3q4 b kq - 0 27
>
>I think KOK should have castled and gave back the knight with a wild, but
>perhaps roughly level position.  Instead he played 27... Qxg4+? and after 28.
>Rc4 the BQ moved to 28... Qg6 and the opportunity to castle was lost after
>Hori's 29. Qc5!

I agree that Qxg4+ looks a bit suspicious.  Warp likes it with a score of around
+2.5, but the line it gives starting with Qxg4+ Rc4 Qg6 Qc5 isn't convincing for
black.

After a couple of minutes Warp switches to Qb1+, the main line going Qb1+ Rb3
Qe4+ Ka5 O-O

Interesting game indeed.

Cheers,
Peter

>
>So, I believe that (A) and (B) above were played correctly by both engines. The
>losing error occured at Black's 27th. But I'm not sure ... The game was played
>on an AMD Athalon 1.6. My Cel-300 :-( and me are not sure on the above
>evaluations.
>
>A really amazing game. Not at all easy for engines to evaluate.
>
>Kind Regards,
>Jim



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