Computer Chess Club Archives




Subject: Re: Secrets of Rybka and Fruit from my point of view

Author: Ryan B.

Date: 18:07:46 12/15/05

Go up one level in this thread

On December 15, 2005 at 21:06:22, Ryan B. wrote:

>On December 15, 2005 at 20:03:47, Sergei S. Markoff wrote:
>>>Really? Just the line from fruit:eval.c:
>>>  eval = ((opening * (256 - phase)) + (endgame * phase)) / 256;
>>No. Not just this line, but the concept and well tuning.
>>>I find that VERY hard to believe. That concept has been around a
>>>very long-time.
>>Really? Where it was introduced by the first time?
>>There was a lot of material-dependent evaluatation factors, but its was tuned
>>independently. The result for the most engines that used this approach was bad
>>consolidation ability.
>>>We need specifics. I see nothing special about Fruit 2.1 evaluation
>>>to explain the strength.
>>Lets experiment with it. It's easy to remake Fruit search to make it same to the
>Amy has used the same idea for a long time in eval.  I think people are
>underestimating clean and bug free software.

ok, I should have said few bugs.

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