Author: Peter McKenzie
Date: 20:27:40 01/25/00
Go up one level in this thread
On January 25, 2000 at 20:52:28, Christophe Theron wrote: >On January 25, 2000 at 17:29:15, blass uri wrote: > >>On January 25, 2000 at 13:31:01, Christophe Theron wrote: >> >>>On January 24, 2000 at 15:50:15, blass uri wrote: >>> >>>>On January 24, 2000 at 15:34:39, Christophe Theron wrote: >>>> >>>>>On January 24, 2000 at 09:10:12, Robert Hyatt wrote: >>>> >>>>>>I suspect that one commercial program is doing no capture search, but may be >>>>>>using a static exchange evaluator to prevent the last move in a PV from >>>>>>being an outright blunder. Seems to be working. No names to protect the >>>>>>guilty, however. :) >>>>> >>>>> >>>>> >>>>>I'm really curious about this. Using a SEE to "close" the search is in my >>>>>opinion a beginner's mistake (no offense intended). >>>>> >>>>>It's the first thing I have done myself when I started programming chess, and I >>>>>suspect many of us have followed the same path. >>>>> >>>>>But if somebody tells me it really works, then I have, once again, to reconsider >>>>>seriously all I know about chess programming. >>>>> >>>>>It's not new anyway. Every now and then I realize how little I know. That's part >>>>>of the fun. >>>> >>>>The program hyatt talk about is probably Junior. >>>> >>>>Uri >>> >>> >>>Really??? >>> >>>Why do you think it's Junior? >>> >>>Junior is said to have a huge NPS. Using a SEE at the end of the tree (in every >>>node actually) is supposed to drop your NPS considerably... >>> >>> >>> Christophe >> >>I remember that amir ban said in the past that he does not think that Qsearch is >>a good idea. >> >>I also remember that there was a position that proved it when Junior never did a >>mistake at small depths that other programs did because of Qsearch. >> >>Uri > > >OK. I hope Amir reads this and can say if it is correct. Maybe they do a simplified qsearch where you just do recaptures on the destination square of the last fullwidth move? I played with this once, it isn't too bad. I eventually discarded it, probably for the wrong reasons :-) > >I am surprised, but I like to be surprised this way. > > > Christophe
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