Computer Chess Club Archives




Subject: Re: The Code for the Rybka-Mate-Bug

Author: Chrilly Donninger

Date: 09:27:31 12/13/05

Go up one level in this thread

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) ! :-))
>>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?
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.


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