Author: Tord Romstad
Date: 12:21:15 10/31/03
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On October 31, 2003 at 10:49:43, Christophe Theron wrote: >On October 31, 2003 at 07:17:17, Tord Romstad wrote: > >>On fast hardware, it seems to >>me that you find the entire spectre from no qsearch at all (Junior) > >No QSearch at all? > >I have never run Junior of any of my computers, but I doubt it would be strong >if it had no QSearch. I have also never run Junior on any of my computers (I don't even have a computer where Junior would run), but rumors have repeatedly claimed that it doesn't have a qsearch. It seems really strange to me, too, and I am tempted to believe that you and Uri are right and the rumors wrong. >Either it has a QSearch but the QSearch nodes are not recorded (so they are not >displayed in the main line), or it uses some kind of SEE to terminate the >search. Yes, if it really doesn't do any form of qsearch it will obviously have to use some kind of SEE, probably a very sophisticated one. >>Is your "special system" mostly useful on slow handheld units, or do >>you consider it to be very important even on fast hardware? > >It is mainly important on slow hardware. I could remove it in the PC version and >one would hardly notice the difference. That's what I guessed. >But I repeat that working on the QSearch is important for all chess programs. I am not so sure. Crafty does rather well with a qsearch so simple that it looks almost ridiculous. And although it is a bit weaker than the top programs, I don't think the simple qsearch is the main reason. Tord
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