Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: Value of King in SEE

Author: David Rasmussen

Date: 08:50:08 01/07/02

Go up one level in this thread


On January 07, 2002 at 10:50:34, Severi Salminen wrote:

>
>Of course in most of the cases, you don't need to worry about 9 queens getting
>involved in the same SEE calculation, but my king value is big and I use 32-bit
>ints to store the score so that's not a problem for me. But I think the values
>won't balance out (unless you meant material score, or something) in SEE

I meant that I am using the same piece values for material score as I am using
in SEE. When I do SEE, I just use an int, so that should be fine, but as the
same values are used for material score, which I use in evaluation which
eventually ends up in hash entries, I want the material scores to not be too
big. I already use many bits (18) for storing the score, because in this version
of Chezzz, I am using millipawn values instead of centipawn values (I want to
experience myself that millipawn precision is not worth the effort before
switching back to centipawns).

>calculations. Are you storing the SEE score in hashtable?? I believe SEE score

No, I am not... :)

>should be used only to sort the moves, and nothing more.

I agree.

>I think you are tired,
>or then I'm _very_ tired ;) Or are you using the same king value for

I am not especially tired. I slept 11 hours last night :)

>calculating
>material balance? Then you are right: the values will of course balance out. But
>overall, in material calculation, you can just skip kings, right?
>
>Severi

Sure. But to make things simple, I skip have been skipping the king by assigning
it a value of 0.

/David



This page took 0 seconds to execute

Last modified: Thu, 15 Apr 21 08:11:13 -0700

Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.