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Subject: Table-based SEE

Author: Tord Romstad

Date: 11:44:23 11/18/03

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On November 18, 2003 at 11:39:20, Bas Hamstra wrote:

>On November 18, 2003 at 10:51:44, Tony Werten wrote:
>
>>Couldn't resist.
>>
>>Tony
>
>Actually, in Leiden you said SEE costs you only a table lookup. My question is:
>what about x-rays? It seems impossible to me to get the *real* see value with a
>table lookup in practice. So how do you do it?

In the same way as Rebel, I guess (see Ed's page for details).  If you just
include x-ray attacks in your attack tables, it is fairly straightforward.
It is not always 100% accurate, but in practise it works very well.  I do
something very similar myself.

What I would really like to know is how to do this without really big lookup
tables.  I will probably try porting my engine to PalmOS some time soon,
and a lookup table of several hundred KBs will obviously not work well
there.  Because Rebel used to run on slow dedicated chess computers with
limited memory in the past, I guess there must be a way.

Ed, are you listening?  :-)

Tord



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