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Subject: Re: DB vs Kasparov Game 2 35. axb5 (iteration #21 finished!)

Author: Amir Ban

Date: 15:19:02 11/24/98

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On November 24, 1998 at 14:16:16, Ernst A. Heinz wrote:


>"DarkThought" finished iteration #21 after 210 hours of computation and I
>finally had to stop it there. Qb6 remained the best move and the PV took about
>156 hours and exactly 120,180,459,947 nodes to resolve (3x more than the PV of
>the previous iteration). The expected best reply switched back to Rd8 and the
>score sank to a new low of +1.13.
>
>21.01  Qb6 Rd8 Be4 a5 axb5 axb4 Rxa8 Rxa8 Ra6 Rd8 ... (1.13) #120180459947
>
>=Ernst=


Hey ! You are back on the "drawing" line and you have a novelty !

Dark Thought now wants to decline the bishop sacrifice and play Ra6 (rather than
Rxa8 Qxa8 Qxd6 Qa1+ etc.). We completely overlooked this possibility when we
analyzed this line last year. It seems to hang on to a +1 or so advantage, with
reasonable winning chances, I think.

In view of this, I need to change the conclusion of the analysis, which was that
36.Qb6 Rd8 draws.

Great effort, Ernst.

Amir




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