Author: Chrilly Donninger
Date: 11:25:00 12/13/05
Go up one level in this thread
On December 13, 2005 at 13:47:58, enrico carrisco wrote: >On December 13, 2005 at 12:27:31, Chrilly Donninger wrote: > >>On December 13, 2005 at 11:53:28, enrico carrisco wrote: >> >>>On December 13, 2005 at 09:38:12, Chrilly Donninger wrote: >>> >>>>On December 13, 2005 at 09:22:03, Eduard Nemeth wrote: >>>> >>>>>Hello Chrilly, >>>>> >>>>>thanks for your serching. Nice. >>>>> >>>>>But please search in the code of Fritz 9, I seems Fritz 9 have now 1000 Bugs >>>>>(not only 100) ! :-)) >>>>> >>>>>Best, >>>>>Eduard. >>>>> >>>>Who on earth is Fritz? Nobody would be interested if I would post a bug of this >>>>noname programme. I was also not asked by the Hydra-sponsor about Fritz. He >>>>wanted to know whats special about Rybka. So I have to find out. So far the only >>>>special thing I found is the mate-bug. >>>>Probably you are right: The secret of Rybka (and Fruit) is the low bugs/second >>>>count. Thats a much more interesting figure than the Nodes/Sec. >>> >>> >>>I find it odd that Rybka's PV and nps are short and nps seems to be manipulated >>>-- either that or sometimes its eval time varies dramatically. >>> >>>Maybe it gets its PV from the hash and does not hash in the Q search? >>> >>>Regards, >>> >>>-elc. >>> >>I do not know. Maybe the Rybka team can/want to answer this questions. Generally >>I am the wrong person to answer Rybka-Inside questions. >> >>Chrilly > >Hello. > >It was more speculation than anything. I highly doubt Vasik will be interested >in discussing the particulars of why his nps appears to be manipulated, etc. > >I am, however, more curious than anything. I have little doubt that his work is >not genuine in its final form. If I had to speculate further, I would say its >origins probably have more in common with Crafty than anything else (e.g., base >ideas from -- not clone of course.) I think a lot of the .EXE size is made up >from bitboards precomputed and pattern recognition bitboards for its knowledge. > >As we have all seen stated earlier, most programs have ideas from others in them >and it's clear Rybka has some first class chess knowledge and that coupled with >a good search has given it a possible first place among the micros. > >Regards, > >-elc. There is the famous quote from Newton: I am dwarf standing on the shoulder on giants. Its not possible and even not desirable to invent the whole wheel for yourself. Making a somewhat rounder/better wheel is sufficient. In this broad sense every programm would be a clone. Rybka has Bitboards. But thats mentioned in the Readme File. So I am telling here no big news. But I really want to avoid to say some real internals. First of all I have not looked on all of Rybkas details. Would be much too much work and also boring. I wanted just to have the big picture. And even if I would know something important, I could/would not post it. This would be against the rules. Chrilly
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