Author: Andrew Dados
Date: 09:27:28 03/24/99
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On March 24, 1999 at 12:13:03, Bruce Moreland wrote: > >On March 24, 1999 at 09:30:19, Inmann Werner wrote: > >>Hello. >> >>My question sure is a little dumb, but anyway.... >> >>When in Qsearch a check occurs, and the opponent can not come out of the check >>(cause he only tries capture moves!) a position is evaluated to be mate, >>although this is not right. >>I am worried about this, but looking at the play of my program, it seems to >>never occur. >>In normal search, when a check comes, I extend. I also extend on the way to the >>Qsearch. But if I am really in Qsearch I seem to ignore the problem. >> >>Is it a problem or am I seeing Ghosts? >> >>Werner > >In the classic Ken Thompson quiescent search, you call "search" from "quies" if >you are in check, so weird stuff like this is prevented. > >You have a bug. > >The reason it is not making your program suck is that you can have a fairly >broken quiescent search and still play decent chess, and in fact breaking your >quiescent search a little might make it play better. If it plays better it's an 'improvement', not a 'bug' :)) -Andrew- > >bruce
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