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Subject: Re: EGTB questions to Martin Fierz

Author: martin fierz

Date: 18:31:10 04/11/02

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On April 11, 2002 at 17:10:57, Alvaro Jose Povoa Cardoso wrote:

>>hi alvaro,
>>
>>have you written your own program by now or did you adapt mine? if you are doing
>>the second, then the answer to your question is "it's irrelevant" - and probably
>>the answer is the same if you wrote your own program... my generator took 5
>>weeks on a XP1600+ with 1GB ram to build the 4-4 database (and anything
>>smaller). once you have this, you will never need to compute it again... another
>>point is that in spanish checkers, you should be much faster building the db,
>>because AFAIK kings sweep, and you have lots more captures which take you in
>>smaller databases much faster than in english checkers, i.e. the number of
>>passes per db you have to do should be much smaller.
>>
>>in the meantime, i have compressed my database, and am working on the access
>>code. believe me: this is the part you have to do right - not the db computation
>>itself.
>>
>>aloha
>>  martin
>
>Hi Martin,
>nice to hear from you :)
>
>Unfortunately I didn't even started. I'm anxious to read the code you sent me. I
>have very litle time, since I work all day and get home very tired. But I'm very
>interested in solving this EGTB problem. My interest in 32bit reversing is
>because it will be used in the program search engine for 'white to move'
>positions. I agree it is not a great issue but if I can do it a little faster
>then I'll do it. Yes you are right about Spanish/Portuguese checkers greater
>number of captures.

PS: your program does not have to reverse the position. the db code handles all
of this. you can just make the db code more efficient.

aloha
  martin



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