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Subject: Re: A good idea for saving space in tablebases

Author: blass uri

Date: 11:03:26 10/10/98

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On October 10, 1998 at 13:55:53, José de Jesús García Ruvalcaba wrote:

>On October 10, 1998 at 11:33:14, blass uri wrote:
>
>>I think that in some endgames like KRN vs KR you can save space
>>by defining rules to do the right moves:
>>
>>If there is conversion in a small number of plies you can find it by search and
>>not use the tablebases to tell you the right move
>>
>
>You can do the search if the position is in the root.
>But what if it appears after a 18 ply search?
you do not define 18 as small
you define small only if you are sure that you can do practically the search
let say less than 8 plies

If the rules for finding the right move does not tell you the right move and it
is at least 8 plies to conversion you save it in the exceptions.
I believe that there are not many positions like this.

Uri
>
>>In other positions you can use tablebases only if the rules are not right
>>I believe it is possible to define rules that you are not wrong in 99% of the
>>cases
>>and for 1% of the cases you can save a smaller file with the positions and the
>>right moves.
>>
>>you can have rules for win,draw,loss too and again you can store only the
>>exceptions.
>>
>>I think it is more difficult to define good rules in other positions like KRB vs
>>KR
>>but at least for part of the endgames you can save a lot of space.
>>
>>Uri



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