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

Author: Robert Hyatt

Date: 09:52:10 01/23/02

Go up one level in this thread


On January 23, 2002 at 05:24:35, Uri Blass wrote:

>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.
>

I agree.  After f5 it is still a draw.  f4 is a silly move after f5, but
even after that it is still a draw...

>
>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

It is also the move that turns that lousy rook pawn into a winning knight
pawn.  :)



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