Author: Uri Blass
Date: 21:57:21 12/20/01
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On December 20, 2001 at 21:14:53, Christophe Theron wrote: >On December 20, 2001 at 19:54:48, Thomas Mayer wrote: > >>Hi Christophe, >> >>> 2) My program as well as other commercial >>> engines are using search techniques >>> that have never been published. >> >>well, I think that is the main reason why they are stronger (among others, >>better testing, more time etc.) and will stay stronger... >> >>But I think new techniques could be also discovered by Amateurs - not so long >>ago you was also Amateur - and I am totally sure that you have VERY special >>search techniques and pruning methods - else I do not understand the depths the >>Tigers are reaching... It's really amazing to watch... :) >> >>>> Perhaps some are using forward pruning techniques that are not >>>> published anywhere. The degree to which this affects their playing strength >> is debatable. >> >>>No it's not. It makes commercial programs clearly stronger. >> >>In my opinion, "correct" prunning is they best way to get stronger and >>stronger... As you said - nullmove can't be everything... believe me, I am >>searching, maybe I will find someday something... And I am totally sure all the >>others are also searching... futility pruning for example is an idea, but I >>don't use it myself because it don't seems to be a win for my engine... and >>chess is complicate enough that there could be many many many ..... many more >>ideas... prunning is always risky, but if you find a good and robust way, it is >>overall a win... and I believe, YOU have found something and the others for sure >>also... As long as chess programs evaluate 99,999% totally idiotic positions >>there is a way to prune something away... The question is: HOW... :) > > > >It's not that a have a special technique. It's that I have many of small >techniques, each adding value to the engine. > >There is no "big thing" to find I think. But there are many small improvements >to find. In the end you it makes a big difference. > >But there is no miracle. It represents years of work. > > > > Christophe I think that the time is dependent in the programmer and it is possible that a programmer with more talent can do it in a few months. I agree that there are many things to find but I also tend to believe that there is a big thing to find. Uri
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