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Subject: Re: Finding mate in the quiesce search

Author: Robert Hyatt

Date: 08:46:28 08/24/04

Go up one level in this thread

On August 24, 2004 at 11:34:31, Alessandro Scotti wrote:

>On August 24, 2004 at 11:24:28, Anthony Cozzie wrote:
>>On August 24, 2004 at 10:40:15, Alessandro Scotti wrote:
>>>Ok but then you don't propagate the mate score out of the quiesce, right?
>>And why not?
>Well if I knew why I wouldn't be asking! (*) :-)
>For now my reason is: there is no proof that a score is mate out of quiesce,
>because quiesce doesn't examine all possible moves but only part of them. After
>reading several replies this doesn't seem to be a popular opinion, though, but
>that's how I see things at present...
>(*) Hope English tenses are correct here!

You miss the point.  I reach a node X, I can play a move which lets my opponent
mate me, or I can stand pat.  The way around this is to notice that you are in
check, and force the q-search to look at _all_ legal replies, and eliminate the
"stand pat" option.

Either way will produce a valid search result.  The latter will find forced
mates more accurately of course...

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