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Subject: Re: KB*KP - endgames

Author: Vincent Diepeveen

Date: 14:20:25 02/01/05

Go up one level in this thread


On February 01, 2005 at 14:35:53, Thomas Mayer wrote:

>Hi Vincent,
>
>On February 01, 2005 at 14:30:22, Vincent Diepeveen wrote:
>
>>On February 01, 2005 at 14:22:26, Thomas Mayer wrote:
>>
>>>Hi Vincent,
>>>
>>>On February 01, 2005 at 14:05:50, Vincent Diepeveen wrote:
>>>
>>>>On February 01, 2005 at 14:02:18, Vincent Diepeveen wrote:
>>>>
>>>>>On February 01, 2005 at 12:20:30, Thomas Mayer wrote:
>>>>>
>>>>>You  mean like this?
>>>>>
>>>>[D]8/8/P4b2/2K3k1/8/8/8/8 b - -
>>>>
>>>>1-0
>>>>
>>>>Whereas :
>>>>[D]8/8/P4b2/2K3k1/8/8/8/b7 b - -
>>>>
>>>>Is a draw.
>>>>
>>>>And if you remove the f6 bishop it's a win for white again.
>>>
>>>thanks... your example kills my second idea... so I must return failure when 2
>>>bishops are present... I could create rules which even would cover those
>>>problems, but for a fast routine they would be to complicate...
>>>
>>>It's always good to have an FM handy... :)
>>
>>Thanks.
>>
>>The question is where you worry about. If you have a 5 men EGTB already who
>>cares about extrapolating 4 men info from a 5 men egtb?
>
>The idea is simple -> deep in the search or in the qsearch I have only my 4 men
>bitbases... it's good to have exact results here for some 5-men... :) I can
>guess sometimes even 6, 7 or 8men results... I am quite sure that it will work,
>but as I have said in another post -> when it is programmed I will present some
>results... (If it works like I hope it should work...) -> in that respect kb*kp*
>is now the first really interesting recognizer / special endgame I am
>programming... but there is more to come... :)
>
>Greets, Thomas

You risk an evaluation error which is real huge when you evaluate something to a
win which in fact isn't a win :)





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