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Subject: Re: Let's analyze move 36

Author: Amir Ban

Date: 17:27:44 10/06/97

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On October 06, 1997 at 14:28:24, Ed Schröder wrote:

>On October 06, 1997 at 12:07:49, Amir Ban wrote:
>
>>On October 05, 1997 at 07:06:03, Chris Whittington wrote:
>>
>>>
>>>On October 05, 1997 at 04:08:43, Amir Ban wrote:
>>>
>>>>
>>>>Let's try to analyze the critical variation in DB-GK game 2. The move is
>>>>36 (axb5 was played, don't confuse it with move 37).
>>>>
>>>>The variation to look at is after 36. Qb6 Qe7 37. axb5 Rab8 38. Qxa6 e4
>>>>39. Bxe4 Qe5. What does Black have here ?
>>>>
>>>>At ply (or whatever) 10, DB gives this PV:
>>>>
>>>>Qb6 Qe7 axb5 Rab8 Qxa6 e4 Bxe4 Qe5 Bf3 (at lower depths it tries g4) Bf3
>>>>Rd8 Qa7 Qxc3 Bh5 +0.74.
>>>>
>>>>At ply 11, there is no PV and the eval is +0.48.
>>>>
>>>>This variation was mentioned by Seirawan in his analysis, and the GK
>>>>team used Hiarc & Fritz to analyze it to death.
>>>>
>>>>Junior, by the way, likes an intermediate 37...a5, which creates the
>>>>same position but with Ra2 misplaced.
>>>>
>>>>What do you make of this ?

[snip]

>>Ed, how about giving this analysis a shot ?
>
>
>Here is the text from my home page.
>To me this is the longest defense.
>
>- Ed -
>
>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
>Rr6/5kp1/1qQb1p1p/1p1PpP2/1Pp1B3/2P4P/6P1/5K2 w - - id DEEP BLUE -
>Kasparov,G;
>
>Analysing this with Rebel we tried to find out the longest defense
>till the draw (repetition) would be found. Well it is at least 36 plies.
>Even for DB super machine that's too much.
>
>The line goes like this...
>
>45.Ra6? Qe3! 46.Qxd6 Re8! 47.h4! h5! 48.Bf3 Qc1+ 49.Kf2 Qd2+ 50.Be2 Qf4+
>51.Kg1 Qe3+ 52.Kh2 Qf4+ 53.Kh3 Qxf5+ 54.Kh2 Qf4+ 55.Kg1 Qe3+ 56.Kf1 Qc1+
>57.Kf2 Qf4+ 58.Ke1 Qc1+ 59.Bd1 Qxc3+ 60.Kf1 Qc1! 61.Ke2 Qb2+ 62.Kf1 Qc1
>
>Note 60..Qc1!
>
>It's a (quiet) non checking move. Perhaps the reason why no
>program can find 45..Qe3 with a draw score?
>


Ed, you're on the wrong page. We are talking about the controversial
move 36.

Amir





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