Author: Vasik Rajlich
Date: 01:34:05 01/02/06
Go up one level in this thread
On January 02, 2006 at 03:11:49, Uri Blass wrote: >On January 01, 2006 at 16:00:00, Gian-Carlo Pascutto wrote: > >>On January 01, 2006 at 08:53:35, Uri Blass wrote: >> >>>I agree but I do not see a reason not to count qsearch nodes and the author did >>>not admit that he does not count qsearch nodes and it seems to me based on his >>>posts that he counts every node in his search so I was surprised to find out >>>that he does not do it. >>> >>>I did not want to believe GCP that rybka does not count qsearch nodes because I >>>assumed that Vasik knows more about rybka and I assume that he does not give >>>misinformation but it seems that I was wrong and GCP was right. >> >>Happy new year! >> Happy new year from me :) >>Now that you have made this step, it's time to start wondering if Rybka is >>really doing something entirely different and new and has such a huge >>evaluation, or if we should see Rybka as a Fruit-like engine but with some of >>Fruit's weaknesses solved, and if it's really not doing anything really special. >> >>How much stronger do you think Fruit would get with a better kingsafety and a >>better extension system, and some evaluation holes plugged? As strong as Rybka? > >I believe that fruit can be better than rybka1.2 when it is improved but of >course it proves nothing because I also expect rybka to be improved. > Yes, I am sure that Fruit 3.0 and Fruit 4.0 will show that Fabien's approach is nowhere near an end. >It seems to me that rybka also can be improved by a better kingsafety and a >better extension system. > >> >>And why is Rybka's endgame so spectacularly bad in some situtions (but fine in >>others)? Is Vincents preprocessing theory correct? Was Vasik lazy regarding >>those issues? > Ok, not talking about Rybka of course, as I wouldn't like to rob you of the joy of figuring this out :), just about pre-processing in general: 1) I am not sure why a preprocessor would play especially badly in the endgame. 2) Amir has explained (you can find this in the archives) that Junior started as a preprocessor, but the last traces of its pre-processing were removed around '99 or so. 3) I am not sure why a preprocessor would be more likely to make the sorts of weird blunders that Rybka sometimes makes (like 19. .. h3 against Ikarus). Vas >I do not know the reason but I do not believe vincent's theory. >I guess that the reason is that Vasik still did not write the relevant code. > >Uri
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