Computer Chess Club Archives




Subject: Re: Detecting Draws using a Small Hash Table?

Author: Uri Blass

Date: 08:55:57 02/21/02

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On February 21, 2002 at 11:37:55, Sune Fischer wrote:

>On February 21, 2002 at 10:46:17, Uri Blass wrote:
>>>I think just doing what everybody else is doing can save a lot of time, hard to
>>>be innovative all the time ;)
>>No way
>>I am not going to do things in the same way that other do them.
>>I dislike this idea.
>Me too, but I believe eventually you will end up doing more or less the same,
>because you will discover this is the best way.
>I think, that if I need information about attacking directions, I can do a few
>bitoperations on the attackboards and get only what I need and no more.
>Ideally we would like to know it all and search infinitely deep etc. but we
>can't. The challenge is to make the best compromises, and generating a lot of
>information that you are not even sure how to use, doesn't sound like a good
>compromise IMO.
>Eg. do you really need to know all the attack directions on every pawn or
>bishop, really? Honestly I believe 95% of that information will be wasted.
>I think the fun is in generating the information you need and nothing more.
>Ideally I would like to generate one move at the time and try that before
>generating the next. However that would make for a bad moveordering, so I should
>make a compromise and generate *some* moves, sort them and if they don't cutoff
>then generate some more and so on. This is how people are doing it, generating
>and sorting all the moves are just waste of time.

It is a waste of time only if you cannot use the information but I believe that
it may be possible to use the information for better search rules.


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