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Subject: Re: Amir could you review this and post your opinion here on DJ7

Author: Uri Blass

Date: 02:24:35 01/23/02

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On January 22, 2002 at 19:27:41, K. Burcham wrote:

>Amir when i run this line through Deep junior7, DJ7 cannot
>see what is going on. even at the depths below.
>none of my other programs do this. my other programs show
>the initial position eval as .0
>so does DJ7. but with the first move, DJ7 still shows .0 through
>several moves. other programs show large eval change with first move
>of f5.

I think that shredder is wrong here and after f5 the evaluation should be a draw
and the mistake is some moves later.


The problem with Junior is that Junior simply does not search positions that it
believes that they are drawn.
The problem is known for years but it seems that it is not important for
Amir to fix it.

I can imagine some ways to fix at least most of the problems.
Here are 2 possible ideas:

1)stop analyzing positions that are believed to be draw only if the remaining
depth is small enough.

2)stop using insufficient material in some situations(for example
after seeing 0.00 evaluation and getting a big depth).

<snipped>
> also can you explain the DJ7 eval at 67...g5---here DJ7 engine stops.
>kburcham

67...g5 is the only legal move so Junior does not need to analyze.

Uri



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