Author: Fernando Villegas
Date: 17:59:45 11/18/00
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On November 18, 2000 at 15:54:26, Timothy J. Frohlick wrote: >When one bullet or a few anthrax spores will work just as well. That is a bad >but effective comparison. > > >Brute force is the dumb way to approach any problem. "Just enough" force is a >much better way of solving any problem. Hi Tim: You, ex soldier, know well how difficult is to appraise how much is enough in military force. Sometimes what's matter is to make sure a target, so you use anything you have if you have it. In fact sometimes you have so much resources that to be selective just to appear smart is in fact the dumb thing to do; selection involves risk all the time and only should be neccesary if it is unavoidable. I think in chess programming brute force approach has been and it is useful in certain cases where you have the time and cpu power to do so and the risk of being selective is unnecesary to take. Case 1: combination calculations where sacrifices are involved. Case 2: when the program is in risk to be mated. And so and so. In fact some of the best programs keep room for brute force. "King" in the first plys, buy example, is totally full width. Same Fritz. Etc. Other makes full search in the end of the tree. So to be selective involves sometimes to select non selective methods. :-) Fernando > > > >On November 18, 2000 at 15:48:12, Timothy J. Frohlick wrote: > >>On November 18, 2000 at 13:39:39, Jorge Pichard wrote: >> >>>Does anybody know which programs use which method and which aproach is yielding >>>a better result? >> >>All of todays chess programs use various forms of selective search. Our >>processors could not even begin to do full-width and complete 14 ply searches. >>Brute force machines would need processors and memory millions of times as much >>as even the Pentium IV 1.5 Ghz machines that just arrived today. >> >>Full width or "brute force" is not a smart way to play chess. Kramnik and >>Kasparov are not brute force players. >> >> >>Tim Frohlick
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