Author: Gerd Isenberg
Date: 11:19:26 12/12/05
Go up one level in this thread
On December 12, 2005 at 13:51:44, Vincent Diepeveen wrote: >On December 12, 2005 at 02:55:58, Gerd Isenberg wrote: > >>On December 12, 2005 at 02:45:21, Daniel Mehrmannn wrote: >> >>>On December 12, 2005 at 02:31:26, Gerd Isenberg wrote: >>> >>>>On December 11, 2005 at 20:59:08, Daniel Mehrmannn wrote: >>>> >>>>>Hello, >>>>> >>>>>I was long thinking if i really should post that and some people giving me >>>>>warnings >>>>>to not do that, but i think i must do that to feel better. >>>> >>>>hmm... i don't buy that Daniel. I don'i understand you reasoning - as an >>>>ex-member of the Greif team aka Nimzo clone. If you search for Vasik's post here >>>>in the past it is rather obvious that Rybka is a very own and original program. >>>>Also due to the rating boost, bitboards and file size Rybka does not look like a >>>>Fruit-clone. >>>> >>>>Of course he, as well as other commercial and amatuer authors had a look into >>>>fruit sources. Copying ideas is not cloning. >>>> >>>>Gerd >>> >>>Hello Gerd, >>> >>>i think you know that i had nothing to do with the greif sources or program. I >>>was tester and book author and since this days i have no contact to Michael. >>> >> >>You told that story... >> >>>Again, i don't say Rybka is a clone. >> >>But you claim suspicions in a public forum for no reason as a concurrent >>programmer. Vas is ready to make a commercial business with Rybka. >>Can you imagine how much damage your post may wreak, to Vas's future business? > >You are overreacting a bit here. > >Let's put everything in perspective. > >a) Rybka is an original engine and programmed by Vasik. Just already testing >with it and after some days i figured out, note i do not dissassemble at all as >that's illegal i just test a few positions at it and see how it reacts, i >figured out it is a very unique program. I was amazed that what i tried myself >in 1999 works so well for Rybka. He sure has tuned it very well! >An amazing achievement. Though positional weak, it kicks butt >strategical and tactical in a way we have not seen before! > >b) Rybka is freeware engine, so until he releases 2.0, you will do near to no >financial damage in a forum with under 200 visitors or so, from which majority >is not gonna buy anything anyway, except for chessmaster and fritz. > >c) what rybka is doing bitboards or 32 bits doesn't matter a shit. In fact i >feel bitboards only slows it down there at the moment as it requires a 64 bits >executable for bitboards. > >d) gcc is indeed ugly compiler according to some, but it's pretty ok for >32 bits code, like Diep. In fact it's faster for diep than visual c++. > >I hope you realize visual c++ 2005 compiles somehow do not work for me >at quad opteron with server enterprise at it, when i tested it. Those exes >do work at dual opterons and single cpu opterons though. So gcc is not a >bad choice there. > >e) royalties made very few people rich > >f) Rybka is for sure currently strongest single cpu engine, no question >about it. Whatever you say, that's not just taking over piece values from >Fruit, that's a whole lot more than just that. > >g) Could you by the way explain >to me how to use fruit mobility in a piece square table program? > >Vincent Hi Vincent, not quite sure whom you ask the questions. Me or Daniel? Yes, i propably overreacted a bit on Daniel's claim. And i think some clone rumors are likely to keep some vague suspicions on the original author and may damage his reputation and business. On your issues: a) aggreed so far - but i learned from Mr. Hunter (iirc) that disassembling is not illegal per se. b) Rybka is not freeware - only the beta was free for some days on Leo's site. c) i'am allways impressed about your feelings. 60% speedup indeed implies bitboards are not that efficient 1.) with 32-bit 2.) with only 8- or better 6 32-bit gp-registers d) what about 64-bit gcc? e) yes - but imho Vas has some merits with such a number one engine. f) and g) no idea - guess that are questions for Daniel. Cheers, Gerd
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