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Subject: Re: The first tactical position from kasparov-Deeper blue match

Author: Jeremiah Penery

Date: 23:07:29 07/22/00

Go up one level in this thread


On July 22, 2000 at 21:58:13, Robert Hyatt wrote:

>On July 22, 2000 at 13:41:06, blass uri wrote:
>
>>[D]r3rk2/1p6/2p3P1/4nP1p/pP2p3/P1B1NbPB/2P5/5RK1 w - - 0 1
>>
>>Deeeper blue planned to go to this position in move 37 but did not do it
>>
>>at depth 7(6) after 3 seconds it planned to play Rd8-a8 in order to get this
>>position with evaluation of -24
>>
>>Rd8-a8 failed low at depth 8(6) and deeper blue got evaluation of -54
>>
>>Deeper blue solved the fail low problem with evaluation of -98 and changed its
>>mind to another move b5 with clearly better evaluation.
>>
>>It is interesting to compare evaluation of programs after b5(the move that was
>>played) and after Rd8-a8 the move that was not played to see if Deeper blue had
>>a good reason to fail low.
>>
>>Uri
>
>I tried both ways.  The score is pretty close to the same either way.  After
>b5, my score is -.8 after 15 plies.  After Rad8

Uri posted the position AFTER DB would have played Rda8.  The original position
should've been this:
[D]3rrk2/1p6/2p3P1/4nP1p/pP2p3/P1B1NbPB/2P5/5RK1 b - - 0 1

Then to search 37. ...b5 and 37. ...Rda8 and compare the scores.



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