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Subject: Re: DB vs Kasparov Game 2 35. axb5

Author: Peter McKenzie

Date: 02:39:25 11/18/98

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>First up, I ran the position on lambChop 6.90 for 1hr on a PII 266:
>
>1. Qb6
>Found in: 0sec, 4.21ply   Completed: 13.0ply
>Used: 3600sec, Total Nodes: 109033472,  NPS: 30287
>PV: Qb6 Bc7 Qe6+ Qxe6 fxe6 Rab8 axb5 axb5 Bg6 Bd6 Ra7 Bc7 Kh1
>White by 1.3
>
>I plan to look at it more closely this evening, would be interested in other
>results.

I wasn't too convinced that my program was going to find anything by itself, so
I started helping.

After 35. Qb6 Qe7 36. axb5 Rab8 37. Qxa6 e4 my gut says that black has drawing
chances due to the bare nature of whites king side.  I plugged this position
into lambChop for an hour and it of course wants to play Bxe4 - what do others
play here?

After 38.Bxe4 Qe5 it plays 39.Bf3 which looks reasonable to me.  At this point I
spent some time looking at 39...Qe3+ 40.Kf1 but black wasn't doing great.  I
then settled on 39...Re8.  I played this as black vs. the computer at
30sec/move:

39...Re8 40.Kf1 Qh2 41.Re2 Rxe2 42.Kxe2 Re8+ 43.Kf1!? Bg3 44.Qa7 Qh1+ 45.Qg1
Qxg1 46.Kxg1 Re1+ 47.Rxe1 Bxe1

This leaves an opposite coloured bishops ending where black has good drawing
chances.  Of course, my program said +2 but what does it know :)

Not the final word, but food for thought.

cheers,
Peter



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