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Subject: Re: KQ vs KR

Author: blass uri

Date: 23:18:58 10/12/98

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On October 13, 1998 at 01:53:42, Jouni Uski wrote:

>On October 12, 1998 at 22:01:43, Robert Hyatt wrote:
>
>>On October 11, 1998 at 13:41:16, John Coffey wrote:
>>
>>>Can a program like crafty win KQ vs. KR without tablebases?  (Assuming a
>>>minute or so per move?)
>>>
>>>John Coffey
>>
>>
>>Crafty can't...  I doubt any program can.  Most GM's can't until they
>>study it...  I was at the ACM event where Browne tried to beat Belle and
>>failed miserably several times.  He studied it, then at the rematch
>>he won easily.  But it is non-trivial the first time, and I have had
>>an occasional GM get into this ending on ICC and offer a draw immediately.
>
>In SSDF big game archive I found about 40 KQ-KR games and for my BIG surprise
>all except one were won by Q side and this without any tablebases!!
How do you know that it is without any tablebases?
I know that fritz5 has tablebases for KQ-KR and maybe other programs also use
tablebases for this ending.

It is not surprising that the Q won without tablebases because the defender may
do mistakes.
I think that the results between humans are similiar because it is more
difficult to find the right defence than to find the right winning moves.

Uri
>
>Jouni



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