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Subject: Re: Djenghis in cct4

Author: Sune Fischer

Date: 07:45:08 01/17/02

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On January 17, 2002 at 08:03:24, Daniel Clausen wrote:

>Hi
>
>On January 17, 2002 at 07:09:13, Bas Hamstra wrote:
>
>>That would kill the tournament entirely. Most of the tablebase supporting
>>programs copy the entire source of the TB module and are by that definition
>>clones.
>
>I guess most would agree that the TB-case is a special case. :) I see the
>tablebases more as an independent library.

Well, library or not, you didn't write/calculate the tables, so it is not really
your program finding the correct moves when it reaches that part of the game. I
think the majority considers chess solved at that level, so there's no good
reason to spend time doing lots of special heuristical programming.
However, it is still cloning IMO ;)

>If Nalimov would have written a chess engine, where TB was just one part and
>would have made it public like Bob does with Crafty, then copying just this part
>of his engine would be a (partial) clone for me. Nalimov didn't do it that way
>though and it is my understanding that if you ask him nicely, he will give you
>permission to use his code in your engine and he would not see this as a clone.

Whether or not Nalimov made an entire engine around the tables is not really
significant I think, I could just argue that you are not cloning Namilov, but
instead the first program to use them;)
Basicly most of the programs are clones of each other at some level, the ideas
and algorithms are much the same, only the imlementations of them and the
weights differ.

>On a related note: It wouldn't hurt, if someone would really not depend on
>Nalimov's TBs but code their own. Who know - maybe they contain some nasty bugs
>or something, no-one found out so far because everyone uses them. ;)
>
>Sargon

He, try and let a top program mate you in kbnk without tables;)

-S.



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