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Subject: Re: Idea for an interesting experiment for WAC positions

Author: Robert Hyatt

Date: 08:12:28 06/10/03

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On June 10, 2003 at 03:34:27, Les Fernandez wrote:

>On June 09, 2003 at 21:46:43, Dann Corbit wrote:
>
>>On June 06, 2003 at 11:27:27, Les Fernandez wrote:
>>
>>>I have an experiment I would like to run using the entire set of WAC positions.
>>>Can someone send me the epd strings for the entire set and then I was wondering
>>>if when I am done with them if someone would be interested in running the entire
>>>set.  I think we may find some interesting results when I am done with them.
>>
>>It's been done by many people, including myself
>
>Hi Dann,
>I am aware that alot of work has been done with them but I am not aware of all
>the tpyes of things that have been tried.
>
>>
>>Are you sure you want to reproduce that information again?
>
>Hmmm when you say reproduce it again Dann what exactly has been done?
>
>>
>>What time control are you interested in?
>
>I was going to ask you about the time setting Dann.  Perhaps if you can provide
>me with some data that has already been generated that might help me decide on a
>time.  Basically I would be interested to see the right number of solutions
>(from the 300 set) with respect to time.  How is it done?  Does one set a total
>time and then see how many of the 300 positions his engine can solve or is it
>based on a constant set time per position?  Also Dann in your opinion which
>engine seems to score well on the 300 positions and what kind of hardware was it
>running on?
>
>Although I will have to give it some thought I am not necessarily interested in
>the best engine.  I am more interested I think in finding a time somewhere in
>between the best and the worst case scenarios. Will have to think about that.
>
>Thanks,
>
>Les


I have a test run from an older version, 60 seconds per move, that got 300
correct on a 21264 / 600mhz alpha.  Recent versions will not solve #230,
but get the rest in under 60 seconds on my dual xeon 2.8.  Here is a run
at 10 seconds per move on my dual 2.8 xeon:


total positions searched..........         300
number right......................         299
number wrong......................           1
percentage right..................          99
percentage wrong..................           0
total nodes searched..............   201494040
average search depth..............         4.6
nodes per second..................     2327527



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