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Subject: Re: takes shredder5 51 seconds to find mate in one

Author: Georg v. Zimmermann

Date: 06:38:53 09/29/01

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Hi,

it is not a good idea to invent new meanings for words that are clearly defined.

quiesce search and normal search are 2 very different things in most chess
programs.

normal search is terminated when the depth + extensions is used up.

quiesce search is terminated when there are no more good captures( programs use
different way to figure what is good ), promotions and checks for some.

>These case may not happen in real games but I can imagine that cases when the
>program waste too much time on the qsearch can happen(it may be only 0.01
>seconds for one qsearch but if you add all these times then it may be a problem)
>
>Uri

I think what you are trying to say is that this is an extreme example of what
might happen in some normal positions.

Well I am sure if you show Dr.Hyatt a position from a real game where Crafty
fails to reach the correct decission because it doesn't search deep enough and
the quiesce nodes searched are very very high he will consider limiting the
qsearch.

Georg



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