Author: leonid
Date: 17:55:25 10/03/99
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On October 03, 1999 at 18:43:54, Robert Hyatt wrote: >On October 03, 1999 at 04:40:59, Ed Schröder wrote: > >>>Posted by leonid on October 02, 1999 at 08:23:35: >>> >>>Is really Rebel 10 raw speed (search by brute force)is higher that of >>>Hiarcs 7.32? >>> >>>For the last few months I am trying to find exactly where the raw speed of >>>my logic for positional search stays. I tryed few best games. My response >>>was that my "branching factor" was not good. It went between bad, very bad and >>>just normal. Problem is that you can't say for sure that the game that you >>>comparer with do the "brute force search". During the last surprise I >>>found that in Hiacrs to reach the "brute force" you must put its "selectivity" >>>to zero. Now it is likely that Rebel raw speed is even higher that Hiacrs. >>>Is this last finding only mirage or "final truth"? >>> >>>Thanks for response, >>>Leonid. >> >>Unfortunately there is no "final truth", so you can stop searching :) >> >>Thinking (for example) 6 plies deep with Program_X can't be compared >>with 6 plies deep for Program_Y. Main reason: different type of >>extensions chess programs use. >> >>Best example is Deep Blue. DB's iteration depth is in the same league as >>the micro's. It is said DB uses massive extensions which explains it all. >> >>It is impossible to compare chess programs on ply-depth. >> >>Ed Schroder > > >Ditto for NPS values. What is a 'node'? Different programs give >different answers... Here I agree 100%. I have seen my own engin to go between high 400000 nps and 200000 nps just after changing the ply zero. Speed of the engin was almost the same, numbers were twice as different. But how about the Rebel game? It is the most franc and "outspoken" game I even seen. Do this game really goes in its "brute force" when you ask it to do so? And how about some other games that do "brute force" search in the strict way possible? Who can name them? Leonid.
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