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Subject: Re: Book part of the engine? (was: Unauthorized use of Rebel books)

Author: Peter Berger

Date: 10:32:37 05/02/02

Go up one level in this thread


On May 02, 2002 at 13:29:15, Robert Hyatt wrote:

>On May 01, 2002 at 14:41:39, Russell Reagan wrote:
>
>>On May 01, 2002 at 10:02:58, Miguel A. Ballicora wrote:
>>
>>>On May 01, 2002 at 09:33:58, Jeroen Noomen wrote:
>>>
>>>[snip]
>>>
>>>>In the meantime I have sent a letter to the ICCA to clarify matters.
>>>>
>>>>Jeroen
>>>
>>>In a competition, do you consider a book part of the engine?
>>>Is anything about this included in your proposal?
>>>I have not seen your opinion about this. (maybe I lost it in the dozens
>>>of replies).
>>>
>>>Regards,
>>>Miguel
>>
>>IMO the engine is the part of the program that selects a move to play. Since the
>>opening book, and EGTB's are used to select a move to play, they are part of the
>>engine, IMO.
>>
>>Russell
>
>
>I don't count EGTBs because of the nature of the information they contain.
>
>Steven Edwards did tables.  Eugene did them in a different format.  Thompson
>did the same followed by Stiller.  Bruce did his own format.  Vincent did one
>although I don't know if he ever finished it.
>
>But, with all of that, they are all accessed in the same way, and they produce
>the same identical information for the same position.  Therefore there is
>nothing "unique" in them that would make my version distinct from your version,
>other than the compression technique (if any) and the order of the pieces used
>to produce the Godel number.

I think Bruce Moreland posted some time ago that his tablebases know about the
50 moves rule; that could be an important difference that might change the
result of a game.

Peter
>
>I see no problem with people sharing a good list of random numbers to see the
>Zobrist hashing algorithm, any more than I see any problem sharing tables, since
>the two kinds of data are identical in nature.  Books are far different,
>however, and are a big sticking point in current rules.



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