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Subject: Re: Deep Blue Match game 2 of match 2

Author: Ed Panek

Date: 10:53:13 06/20/01

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On June 20, 2001 at 12:21:04, Geo Disher wrote:

>Game two had a couple of key moves that were questioned by Kasparov after the
>match.  Could someone tell me what those moves were?  I am thinking of just
>letting my computer evaluate those positions for a few months if they will run
>that long to see if the deep blue moves ever show up as preferred moves.  I
>understand that even running the programs that long will not come close to the
>number of moves DB went through but still I am interested in the result.  I
>think others have done this in the past but maybe not with the newer software.


I seem to recall one of them was a bishop move Move 37 that positioned itself to
guard 2  isolated pawns. Gary thought this move was very positional and this
denied his pawn the ability to develop counter play. Gary was very shaken by
this move and I believe he thought Joel might have put it into the computer:)

here is the Deep blue output for the move

-->  37.   Be4 <-- 3/37:56
---------------------------------------
hash guess Rc8b8,Guessing Rcb8

Ebook:
root.fulleval(0)=23 softinc=7
Done
Done.
Starting at iteration=8()
assert_search_mode_interrupts:  should be enabled interrupts
 8(4) #[g3](30)[g3](30) 30^  T=1 4/5/7 ni2.18M i5.25M ww0.00M a1.57M s3.33T
u2.94T
pg2g3 @+.Qe8d8 @.kg1g2 @.Ra8a2r t.ra1a2R t.Bd6c7 .qf2a7 .Bc7b6 s.qa7a6 .Qd8d7
[FH: no exit] 8(6) #[g3](32)####################################### 32   T=6
4/8/12 ni9.74M i13.93M ww0.00M a6.92M s10.15T u9.67T
pg2g3 @+.Qe8d8 @.kg1g2 @.Ra8a2r @t.ra1a2R @t.Bd6c7 @.qf2a7 .Bc7b6 s.qa7a6 .Qd8d7
 9(6)(mess stat: t=8) ascention=3776561 Lg130/1839 Exh189 JLn=0 ovl=0 jobs=1
CkC=171804 CkAck=8311292
(o0)(o0)(o0)(o0)(o0)(o0)(o0)(o0)(o0)(o0)(o1)(o0)(o0)(o0)(o0)(o0)(o0)(o0)(o0)(o0)(o0)(o0)(o0)(o0)(o0)(o0)(o0)(o0)
 #[g3](34)####################################### 34   T=14 5/9/12 ni21.81M
i31.69M ww0.00M a13.76M s25.63T u20.69T
pg2g3 @+.Qe8d8 @.kg1g2 @.Ra8a2r @t.ra1a2R @t.Bd6c7 .qf2a7 .Bc7b6 s.qa7a6 .
10(6)(mess stat: t=29) ascention=3795927 Lg730/9020 Exh2532 JLn=1 ovl=0 jobs=56
CkC=172134 CkAck=8317361

Ed



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