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Subject: Re: Which version of Crafty played in Maastricht?

Author: Robert Hyatt

Date: 19:17:54 08/27/01

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On August 27, 2001 at 16:48:18, Joshua Lee wrote:

>In light of Crafty having a won game but losing how do you feel you can improve
>your program? Is there anything from Cray Blitz that you could try that would
>work on non vector machines, also what about using Singular extensions and maybe
>new techniques?

Several have been playing with two distinct SE versions of Crafty.  One
patterned after the actual DB implementation, one patterned after a "poor-man's
SE approach".  So far, I haven't liked either.  But several are playing around
still.

I haven't had any Cray time to test the hypothesis, but it might be that null
move with R=2-3 is counteracting some of the SE stuff and interfering with how
it works.  It was effective in CB.  It has been miserable in Crafty, to date.





>
>I had an idea but it is probably the same thing as SMP, lets say you have many
>different processors working in tandem yet alon the pv from the first processor
>the 2nd one would search starting from that point and the next one would look at
>the position from the next move and so on. It seems to me to be rather confusing
>yet with all that processing power you would count out possible moves which at
>first looked promising.
>
>I know little about programming so i don't know if this works or not but i would
>like to learn more.
>
>Thankyou



That is sort of how SMP works, in a basic explanation mode.  It is actually a
lot more complex, but that is the basic idea.



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