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Subject: Re: Position solved.

Author: Roland Pfister

Date: 03:38:27 10/14/02

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On October 13, 2002 at 17:13:44, Jeremiah Penery wrote:

>On October 13, 2002 at 16:57:04, Dieter Buerssner wrote:
>
>>On October 12, 2002 at 18:38:58, Robin Smith wrote:
>>
>>>How does Patzer manage to solve this position?  The solution is an unusual
>>>fortress which involves putting black's king into a cage from which it cannot
>>>escape.  Does patzer have special knowlege for this type of position?  Do any
>>>other programs have this knowlege?  I would think no program would ever see a
>>>near draw score here.
>>
>>I think, it should be Roland Pfister's honour, to tell this. I can say, that
>>when I implement an idea of Roland (which is disabled in my engine by default),
>>Yace will find Kc6 in reasonable time. To implement the idea, needed only 5
>>lines in the source code, but makes the engine a bit slower in general.
>>
>>Regards,
>>Dieter
>
>Can you tell what is that idea? :)


If the king is on a border square and king's mobility is zero and the
only officer is a queen, reduce the material value by queen value.

Roland




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