Author: Christophe Theron
Date: 18:14:53 12/20/01
Go up one level in this thread
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
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