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Subject: Re: Eval Killer (correction)

Author: Rex

Date: 10:54:34 08/28/03

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On August 28, 2003 at 08:35:13, Uri Blass wrote:

>On August 28, 2003 at 08:22:49, Mike Hood wrote:
>
>>On August 28, 2003 at 08:04:03, Mike Hood wrote:
>>
>>>On August 27, 2003 at 23:34:38, Rex wrote:
>>>
>>>>Have fun with this one...  Let your engine run for a few minutes.  Interesting
>>>>to see the different evals on this one..
>>>>
>>>>[D]3r2k1/1pp2ppp/3r4/1P1npq2/3n4/3PPP2/1BQ1BP1P/2RR3K w - - 1 1
>>>
>>>Very interesting... on my 733 MHz Pentium Shredder 7.04 only needs 2 minutes to
>>>realise that Black is winning. On the other hand, Fritz 8 fails miserably. After
>>>60 minutes Fritz 8 still evaluates the position as 1.04 in White's favour.
>>
>>Oops..... maybe I judged the position too soon. I just let Shredder loose on the
>>position again, longer this time, and he changes his evaluation back to (almost)
>>even after 4½ minutes. This is the analysis after 15 minutes. The big jumps are
>>at 2:49 (0.20 to -7.86) and at 4:21 (-7.50 to -0.40).
>
>This is obvious that the only evaluation that you can trust is when an iteration
>is finished.
>
>Shredder saw that one move is losing and changed its mind.
>
>Nothing special.
>
>It may be more interesting if it is possible to compose a position when the
>evaluation of top programs are something like this at the end of the iterations:
>+2.45/1
>-1.54/3
>+1.65/5
>-1.43/8
>+1.34/10
>-2.45/13
>+1.32/15
>
>Uri

This was not a composed position.  It was actually played.



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