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Subject: Re: Which program can see the draw in the 2nd game of DB vs Kasparov ?

Author: Robert Hyatt

Date: 07:51:30 05/29/03

Go up one level in this thread


On May 29, 2003 at 05:30:16, emerson tan wrote:

>On May 28, 2003 at 14:59:41, Robert Hyatt wrote:
>
>>On May 28, 2003 at 03:30:48, Ed Schröder wrote:
>>
>>>On May 27, 2003 at 21:03:59, Matthew White wrote:
>>>
>>>>Didn't fritz find it the first time?
>>>>
>>>>Matt
>>>
>>>Yes, I remember a Fritz version playing Qe3 with a 0.00 score. Truly amazing.
>>>
>>>Ed
>>
>>
>>Was that not because of a missed evaluation?  IE someone looked at the "drawn
>>ending position" and discovered that it was winnable.  But Fritz thought it was
>>worse and therefore chose to follow the drawing line...
>>
>>It's not hard to fiddle with the evaluation to make it favor draw once you see
>>deep enough to equalize the material...
>
>
>
>But in Game 2 of deep blue kasparov, black is really losing so fritz chose
>correctly the draw.

There are positions that can be reached where black is _winning_ also.  If the
program misses these, then the overall evaluation is wrong.  White can't hold
the extra material and avoid the perpetual, so he has to give it back.  And
when/how this is done is the issue.



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