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Subject: Re: Info on 4 times that # of positions ??

Author: Les Fernandez

Date: 14:18:16 07/10/03

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On July 10, 2003 at 06:58:43, Victor Zakharov wrote:

>>Some time ago I remember reading that someone was able to take CAP data that has
>>been collected and analyzed and wrote a program that generated 4 times the
>>number of positions in the entire collection that were all unique positions!
>>does anyone remember this and what has been done with it or is it still being
>>worked on?  I dont remember any of the details but remember it sounded very
>>interesting.
>
>Sorry, I don't understand what youn mean.
>Current CAP as a rule contains all positions that were at least in two games.

Hi Victor,

What I think he was referring to was some time ago I wrote an app that took the
analyzed EPD's on Dann's site (at that time there was about 6,000,000 positions)
and generated an additional 18,000,000 positions in about 30 minutes bringing
the total up to 24,000,000.  These extra positions were as sound and accurate as
the original positions.  What was nice about this is that it required no
analysis engine and was done strictly based on symetries and current analyzed
positions.  In fact I have also thought of other ways of accomplishing a further
increase for the number of positions but have not had time to continue it.  I
think at one point they were posted on Dann's site but I have been so busy I
have been out of the loop for a while but hope to continue these studies in
chess that I had started a while ago.  I miss this stuff and hope to be jumping
on board again shortly.  Hey Dann if you are reading "HELLO"

Les



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