Author: vladan
Date: 06:32:43 02/17/06
Go up one level in this thread
On February 16, 2006 at 21:30:22, Dann Corbit wrote: >On February 16, 2006 at 20:47:25, vladan wrote: > >>After some hot messages about Rybka’s NPS, I must say something (I was told it >>also to my friend Djordje Vidanovic) two months ago. >> >>It is obvious that Rybka’s NPS is not programs real NPS. >> >>It is impossible that program with lowest NPS compared to other engines achieves >>depths sand playing strengths above 2850 (or 2900) ELO points, the best of all! >> >>But, I am not sure that Vasik did purposely tune down real NPS. The only >>explanation for that will be that he tried to hide Rybka’s origin in some other >>public source engines. But Rybka’s plays much different and superior chess, >>which implicates me that Vas however did original and good job with his engine. >>Of course, as he said, he used ideas, maybe some source portions or solutions >>from Fruit, but it is irrelevant if he added (and that is the case) his original >>code somewhere, which amplifies playing strings for a major margin. It is not >>cloning. If it is, all of us are monkey clones (with 95% same DNK with our >>primate relatives :) >> >>Maybe, Vasik counts not all generated nodes, not only terminal (leaf) nodes >>without quiescent generated ones. Each terminal node expands to 2-20 q-search >>nodes, depended on q-search heuristics (if program has only captures, or checks, >>promotions etc.). This presumption explains why Rybka’s NPS varieties and drops >>significantly in positions where exsist much checks, or recaptures, and stay >>stable at high level in strategically (quit) positions. > >It's a tempest in a teapot, anyway. The proof of the pudding is in the eating. >Whether he processes 1 NPS or 1e9 NPS, the program plays like some child of >Kasparov and Polgar. Yes, Kasparov said that he can only devolop 2 NPS.
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