Other endgame tablebase generators

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Other endgame tablebase generators

Postby Denis P. Mendoza » Wed Jan 28, 2009 2:29 pm

I'm sure some have heard about these, but I got no response at CCC from this thread: http://talkchess.com/forum/viewtopic.php?t=26184

I came across these two utilities while studying chess engine in endgames and looking for other tablebases aside from Scorpio' bitbase:

Hoffman: It's an open-source tablebase generator for chess endgames by Brent Baccala. Hoffman calculates chess tablebases, which are large files containing all possible configurations of chess pieces in an endgame and the best play to either win or draw.
http://www.freesoft.org/software/hoffman/

and

Retrochess: allows to analyze and search for chess positions in endgame if the corresponding tablebase is constructed. Uses an external dll for probing. It has a 'Chessdll.dll' (w/ code) created for other chess projects that could use the constructed bases as stated. And it can generate 3-4-5-6-7 men!
http://generatorchess.qsh.ru/Default.aspx

Has anyone tried these yet? I can't access Kirill's forum at the moment so i posted it here.


This is the the right forum now. Maybe I could hear some views!

Denis
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Re: Other endgame tablebase generators

Postby Codeman » Wed Jan 28, 2009 4:31 pm

Retrochess is already being discussed in another thread:

http://kirill-kryukov.com/chess/discussion-board/viewtopic.php?f=6&t=4190
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Re: Other endgame tablebase generators

Postby redpawn » Thu Jan 29, 2009 7:05 am

Hi All:

Hoffman as I Remember was a command line program & I don't like that, I don't know if anything have changed lately, Retrochess on the other hand seems more promising I plan to test it this weekend, the seqence that I have on my mind involves generating certain related tablebases & do some tests & compare with Nalimov's.

Best Regards,
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Re: Other endgame tablebase generators

Postby Codeman » Thu Jan 29, 2009 7:12 am

Comparing the stats is not easy, as they may use some different form of indexing. Furthermore Nalimov uses the DTM format and I don't know about Retrochess.
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Re: Other endgame tablebase generators

Postby redpawn » Thu Jan 29, 2009 1:58 pm

Hi Codeman:

Comparing the stats is not easy


Certainly I'm not going to compare a lot of positions just a little bit in order to know that Retrochess is reliable especially in 5 & 6 men since I have All the 5 men & all pawnless 6 men & 100 GB of the pawned ones.

The strange thing about retrochess is we don't know who's behind it & where to find more about it. but I'm trying it anyway.

Best Regards

Wassim
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Re: Other endgame tablebase generators

Postby Denis P. Mendoza » Fri Jan 30, 2009 12:54 pm

Codeman wrote:Retrochess is already being discussed in another thread:

http://kirill-kryukov.com/chess/discussion-board/viewtopic.php?f=6&t=4190


Thanks pal . Missed that thread!
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