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Subject: Re: Table-based SEE

Author: Anthony Cozzie

Date: 09:16:52 11/19/03

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On November 18, 2003 at 14:44:23, Tord Romstad wrote:

>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

Zappa uses tables; they are 32KB in size.  What on earth are you doing that
makes it several hundred KB?

anthony



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