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Subject: Re: Nodes per Second. Say for known chess games.

Author: Dave Gomboc

Date: 20:03:01 10/26/99

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On October 26, 1999 at 17:53:43, leonid wrote:

>On October 26, 1999 at 13:20:21, Dave Gomboc wrote:
>
>>On October 26, 1999 at 08:02:04, leonid wrote:
>>
>>>On October 26, 1999 at 04:57:07, Dave Gomboc wrote:
>>>
>>>>On October 25, 1999 at 10:33:44, leonid wrote:
>>>>
>>>>>On October 25, 1999 at 06:54:33, Georg v. Zimmermann wrote:
>>>>>
>>>>>>What is your native language please?
>>>>>>
>>>>>>What I was trying to say :
>>>>>>
>>>>>>Rebel is a chess-program
>>>>>>Crafty is a chess-program
>>>>>>Fritz is a chess-program
>>>>>>
>>>>>>they all play _one_ game (chess).
>>>>>>
>>>>>>Sorry, I really only wanted to help you with your English. Cause mine isn't that
>>>>>>great either.
>>>>>>
>>>>>>--Tec
>>>>>
>>>>>Thanks! I feel that we all need this. My mother language is Russian. If
>>>>>everybody and everywhere was so picky about hues and semantics I will be not in
>>>>>this trouble on the first place. Problem is that "fixed depth" in chess jargon
>>>>>don't go after clear logic. Logic says that this should signify fixed number of
>>>>>plys no more, no less. Mistake! Since somebody indicated me this funny surprise
>>>>>I never found my way around the problem.
>>>>>
>>>>>With my respect,
>>>>>Leonid.
>>>>
>>>>"Fixed-depth" actually does mean "search to a fixed depth".  If some program has
>>>>an option that claims "fixed-depth" but isn't, they should call it something
>>>>else.
>>>>
>>>>Dave
>>>
>>>But maybe you know how the "fixed depth" can be achieved and on what game. This
>>>could help me to solve a puzzle.
>>>
>>>Comparing the speed when solving the mate was not problematic. Only you never
>>>knows where you will face a surprise in chess programming.
>>>
>>>Leonid.
>>
>>Well, I doubt that any commercial is going to turn off its quiescence search.
>>Your best bet is to take a crafty and hack it!
>>
>>Dave
>
>This sound to me as too complicated, but Crafty I have already. This game is
>inside of the HIARCS 7.32 package. But do the Crafty permit the "turn of its
>quiescence search"? It is really possible to force this game right now to see
>the given position by "brute force", no extentions, at fixed depth? If so, I
>coud have perfectly clear idea about my "positional logic" speed immeditelly.
>
>I played Crafty. This game is more that interesting. If it is really done on C,
>it is amazing! Very good and quick. But if this game is 100% C it is the most
>crazy game as well. Crazy, because by writing such a good game on C its author
>gave up its first place to somebody else. Only portability of C can explain the
>C preference.
>
>Leonid.

Well, Crafty's source is available, so you can go in and disable the quiescence
search yourself.  I imagine you only get a dll or whatever with Crafty in
Hiarcs, but I'm not really sure.

Dave



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