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Subject: Re: Memory Consumption of 4-men w/d/l Endgame Tables

Author: Dieter Buerssner

Date: 07:14:46 11/13/01

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On November 12, 2001 at 23:26:44, Robert Hyatt wrote:

>On November 12, 2001 at 17:35:51, Dieter Buerssner wrote:
>
>>On November 12, 2001 at 17:04:40, Dan Andersson wrote:
>>
>>>In `Scalable Search in Computer Chess' by Ernst A. Heinz he manages to squeeze >3 and 4 pieces into 15 Mb. Recommended reading! Chapter 6.
>>
>>Unfortunately, I don't have it (yet). Could you give an hint, how he gets about
>>a factor of 2? Or was my estimation wrong?
>>
>>I can see, say for pawnless:
>>
>>462 * 62 * 61 compared to 10 * 64^3. But this is only a factor of 1.5.
                            ^^
>>What else can be done?

>One thing is to reduce the king to 10 squares.  The triangle from
>a1 to d1 to d4 for example.  This reduces the pawnless tables quite a
>bit...
>
>That cuts it to 10 for the first multiplier.

Perhaps, you should reread my post :-) I started with a multiplier of 10 already
for pawnless cases and used it in my estimation.

Regards,
Dieter





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