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Subject: Re: What is Botvinnik's legacy to computer chess?

Author: Christophe Theron

Date: 00:10:07 02/22/00

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On February 21, 2000 at 22:41:26, Dann Corbit wrote:

>On February 21, 2000 at 22:38:58, Dann Corbit wrote:
>
>>On February 21, 2000 at 21:18:37, Christophe Theron wrote:
>>[snip]
>>>Just an example: the concept of "tempo" is absolutely useless for a chess
>>>program. Just my opinion of course. I don't see what to do with this concept,
>>>and I don't think my program is lacking it.
>>
>>Of course your program is aware of tempo.  If not, it will lose all the time.
>>Consider these two nearly identical positions, but each has the tempo advantage
>>over the other:
>>
>>k7/7P/8/8/8/8/p7/7K w - -
>>k7/7P/8/8/8/8/p7/7K b - -
>>
>>I know for certain your program will know of the advantage of the tempo.
>>[snip]
>Just for completeness:
>k7/7P/8/8/8/8/p7/7K w - - acd 4; acn 8; acs 1; ce 32744; pv h8=Q+;
>k7/7P/8/8/8/8/p7/7K b - - acd 4; acn 8; acs 1; ce 32744; pv a1=Q+;
>
>One tempo is the entire difference between mating and getting mated.


Yes, my program knows about it, but it was not necessary to program this concept
explicitely. The concept emerges naturally from the search.

Human players need to think about this concept explicitely, computers do not
need it.

A strong chess player would probably try to implement this concept in his
program, and will only lose his time.



    Christophe



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