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Subject: Re: JRCP on fics

Author: Will Singleton

Date: 13:30:16 02/19/99

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On February 19, 1999 at 15:07:08, James Robertson wrote:

>On February 18, 1999 at 21:09:33, Will Singleton wrote:
>
>>
>>On February 18, 1999 at 20:21:25, James Robertson wrote:
>>
>>>Yes!
>>>Finally they gave my a FICS account. It has the rather boring name of "JRCP",
>>>but John Perry said I could change it when I think of a name for my program.
>>>Anyway, it'll be glad to play any chess programmers here (and their programs
>>>too, of course ;).
>>>
>>>James
>>
>>
>>About time. :)  I'll go on fics tonight.
>>
>>Will
>
>Thanks for the games last night! Amateur really crushed me. Fortunately, I found
>several huge bugs that trashed my program's play. Among others, it would do
>futility and extended futility pruning only when there were extensions! That is
>how it missed that simple mate and played Bc5??. Also, I fixed the pawn hash;
>only some of the positions recieved pawn scores. I'm ready to play you again!
>
>James


It sounds like you have a lot of advanced stuff in there.  How long have you
been working on this?  It took me well over a year to get the pawn-hashing in,
let alone extended futility pruning.  I don't use that at all, if you're talking
about the DarkThought stuff.  Heck, I didn't even know how to properly use
extensions until recently (probably still don't).

Do you also use rotated bitboards and book learning? :)

I did notice that you're king safety was weak, I was able to get in there pretty
easy.  But otherwise it played very well.

Will




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