Author: Terry Giles
Date: 12:48:05 12/13/05
Go up one level in this thread
On December 13, 2005 at 14:25:00, Chrilly Donninger wrote: >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 Hi Chrilly, Newton a "dwarf"? - never! The man was a "giant"! What he actually said was - "If I have seen further it is by standing upon the shoulders of giants". Terry ;-)
This page took 0.01 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.