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Subject: Re: How DJ 7 gets rid of pawns and looses a game against S5.32 in 60 Min.

Author: Martin Müller

Date: 03:53:44 07/26/01

Go up one level in this thread


On July 25, 2001 at 17:15:30, Uri Blass wrote:

>On July 25, 2001 at 16:08:32, Martin Müller wrote:
>
>>Hi all,
>>
>>Please check yourselves the behaviour of DJ7 against S5.32. I better do not
>>comment this game and leave it up to everyone's own thoughts. Just check the
>>jump from 0.51 to 6.44 at depth 27. I used 650 MB RAM for HT on a Dual 1 GHz
>>PIII. Amazing.
>
>I suspect that you use too much RAM and your computer is too fast.
>Maybe if you downgrade your hardware you can get better results.
>
>Here is an analysis of Junior7(p200 64 Mbytes) that cannot see something close
>to the 0.51 at the same depth or at smaller depthes.
>
>New game - Junior 7
>8/2p5/3p1p1p/k2P1p2/P1PP1PBP/2K3P1/8/8 b - - 0 1
>
>Analysis by Junior 7:
>
>58...fxg4 59.Kb3 h5 60.c5 f5
>  +-  (1.81)   Depth: 3   00:00:00
>58...fxg4 59.Kb3 h5 60.f5 Kb6 61.Kb4
>  +-  (1.85)   Depth: 6   00:00:00  1kN
>58...fxg4 59.Kb3 h5 60.f5 Kb6 61.Kb4 Ka6 62.c5
>  +-  (1.94)   Depth: 9   00:00:00  6kN
>58...fxg4 59.Kb3 h5 60.f5 Ka6 61.Kb4 Kb6 62.c5+ Ka6 63.c6 Kb6
>  +-  (1.97)   Depth: 12   00:00:01  28kN
>58...fxg4 59.Kb3 h5 60.f5 Ka6 61.Kb4 Kb6 62.c5+ Ka6 63.a5 Kb7 64.Kb5 Kb8
>  +-  (2.09)   Depth: 15   00:00:01  94kN
>58...fxg4 59.Kb3 Ka6 60.c5 Ka7 61.Kc4 Kb7 62.Kb5 h5 63.f5
>  +-  (2.25)   Depth: 18   00:00:07  724kN
>58...fxg4 59.Kb3 Ka6 60.c5 Ka7 61.Kc4 Kb8 62.Kb5 Kb7 63.h5 f5
>  +-  (2.26)   Depth: 20   00:00:13  1234kN
>58...fxg4 59.Kb3 Ka6 60.c5 h5 61.Ka3 Kb7 62.Kb4 Kc8 63.c6 Kd8 64.Ka5 Ke7 65.Kb5
>  +-  (2.26)   Depth: 22   00:00:29  2921kN
>58...fxg4 59.Kb3 Ka6 60.c5 h5 61.Ka3 Kb7 62.Kb4 Ka7 63.Kb5 Kb7
>  +-  (2.28)   Depth: 23   00:00:51  5121kN
>58...fxg4 59.Kb3 Ka6 60.c5 Kb7 61.f5 h5 62.Kc4 Ka8 63.Kb4 Kb8 64.c6
>  +-  (2.31)   Depth: 25   00:01:47  10815kN
>58...fxg4 59.Kb3 Ka6 60.c5 Kb7 61.Kc3 Ka7 62.Kc4 Kb8
>  +-  (2.31)   Depth: 26   00:03:04  17901kN
>58...fxg4 59.Kb3 Ka6 60.c5 Kb7 61.Kc4 Ka6 62.Kb4 h5 63.f5
>  +-  (2.33)   Depth: 27   00:05:41  32046kN, tb=8
>
>(blass, tel-aviv 26.07.2001)
>
>
>Uri

Hi Uri,

But is not exactly DJ7 a program which requires high performance computers and
which is designed to calculate a high number of kns together with huge
hashtables? I cannot find any such problem on the very same hardware with Deep
Fritz. It is not really a malfunction (the move is accordance to the rules) but
a  move to which lacks sence.

When having the so called "sprechstunde" (live talk with Amir Ban and Shay
Bushinsky) I mentioned that the program acts strange but did not really get an
appropriate reply responding to the unsound sacrifices.

I am at a loss to understand all that.

Kind regards
Martin



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