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Subject: Re: Q: Nalimov EGTB?

Author: Dennis Breuker

Date: 00:42:51 08/06/99

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On August 05, 1999 at 13:03:07, Eugene Nalimov wrote:

>On August 05, 1999 at 05:23:05, Dennis Breuker wrote:
>
>>I haven't read CCC for a long time, and saw some reference to
>>Nalimov's EGTB. My question is: what is so special about Nalimov's EGTB?
>>Is it different from the "normal" ones like Edwards' and Thompson's?
>>
>>Dennis Breuker (Dennis.Breuker@nospam.capgemini.nl)
>
>(1) I generated *full* set of 3+2 TBs; generator (hopefully) can handle all 4+1,
>too, if somebody wants them.

What do you mean exactly by 3+2 and 4+1? 3 pieces and 2 pawns, 4 pieces and 1
pawn?

>(2) En passant is handled correctly.
>(3) They are 2 times less than Edwards' when uncompressed, 8 times less when
>compressed; and compressed format (unlike Thopson's) allows fast probing.

Wow, this is great!

>(4) TB format and probing code allows TB probing "in the tree", not only at the
>root.
>(5) Source of probing code is available, so you can easily incorporate it into
>your chess program. Some programmers had done that in ~2 hours.
>(6) You can easily download generator itself, as well as all 3+3 TBs, from
>ftp://ftp.cis.uab.edu/pub/hyatt.

I will take a look at this in due time.

>(7) A lot of programs already support them, and more will be released this fall.

More? What can we expect?

>Eugene

Thanks for the rapid response,
Dennis (Dennis.Breuker@nospam.capgemini.nl)



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