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Subject: Re: Forward Pruning...

Author: Matthias Gemuh

Date: 10:12:31 02/29/04

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On February 29, 2004 at 12:20:03, Joshua Haglund wrote:

>On February 29, 2004 at 03:20:30, Matthias Gemuh wrote:
>
>>
>>
>>
>>My engine has a very unstable and unreliable search.
>>Sometimes I think I implemented what you are proposing.
>>My opinion is that the blindness introduced by such tricks would really hurt.
>>
>>/Matthias.
>
>yes! it wouldn't do the best search if it didn't reach great depth where f = 3;
>If your engine searches deep try ply > 12. If it doesn't try ply 8, etc... :)
>
>
>I have reason to believe a person will gain atleast 1 ply in the same amount of
>searched time.
>
>example
>time = 30;
>ply 7 = 4 seconds.
>ply 8 = 13
>no more plies reached.
>
>// with idea.
>time = 30;
>ply 7 = 1 second
>ply 8 = 5
>ply 9 = 20 seconds
>
>Maybe this would be good for long time controls? Skip shallow and go to deeper
>lines.
>
>Thanks for your reply,
>
>Joshua Haglund




The effort used to search shallow plys this way is a waste because good parts
of the tree get pruned. You progress rapidly into a tree that lacks some
key moves.

/Matthias.








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