Author: Chessfun
Date: 03:10:53 10/10/02
Go up one level in this thread
On October 10, 2002 at 01:44:06, John Merlino wrote: >On October 09, 2002 at 17:54:07, Chessfun wrote: > >>On October 09, 2002 at 16:42:44, Frank Quisinsky wrote: >> >>>Hi, >>> >>>an interview in English language with Ruffian programmer Per-Ola Valfridsson can >>>be found on Arena webpage. >>> >>>Thanks to Per-Ola! >>> >>>Arena by Martin Blume: >>>http://www.playwitharena.com >>> >>>Best >>>Frank >> >>Hi Frank, >> Nice job. However I'm curious about one point, well more than one but >>I'll limit this too one. >> >>from http://www.playwitharena.com/ >> >>"18. Interview team: >>About the opening book Ruffian uses: While some people are full of praise, >>others seems to think that your book is more of a handicap than a help for >>Ruffian. Do you do a lot of work on the opening book or do you have a friend who >>works as a "book cooker" (book author)? Has the opening book been created in >>conjunction with the engine or is it a seperate working process? >> >>Per-Ola Valfridsson (Ruffian): >>I haven't spent any time to create an opening book for Ruffian. The opening book >>is automatically generated from a rather small pgn file. It has not been >>customized for Ruffian. I wouldn't mind if someone with interest in opening >>books created a Ruffian book. I have received some offers since Ruffian was >>released." >> >> >>As I posted previously and proved version 1.0.0 when released had modified book >>moves identical to Fritz 7.ctg. The previous version (see games below) openings >>did not contain these moves; >> >>So it would appear that someone did infact customize it prior to Ruffians >>release. Simply check the PGN with Ruffians current book and compare what was >>played to what is now listed. >> >>Sarah. > >I previously posted my suspicion (and one other poster agreed with me) that >Ruffian's opening book might have been created from Dann Corbit's 2500.PGN file >(or, perhaps a subset of it). I suspected this because this was one of the main >sources for CM9000's opening book, and during my testing with CM9000 vs Ruffian, >both programs stayed in book for quite some time. While it's possible that it's created from a PGN such as that, it would also now require the additional two games it lost to Tiger plus a couple of manufactured PGN's from those two games with the moves from Fritz 7.ctg. This don't comply with the statement "It has not been customized for Ruffian." Sarah.
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