Author: Uri Blass
Date: 06:28:31 11/18/01
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On November 18, 2001 at 08:57:56, Otello Gnaramori wrote: >On November 18, 2001 at 08:49:06, Uri Blass wrote: > >>On November 18, 2001 at 08:13:48, Jesper Antonsson wrote: >> >>>On November 18, 2001 at 05:06:24, Otello Gnaramori wrote: >>>>>Otello, there is not enough information available for you to make such claims. >>>> >>>>Please see my answere here : >>>>http://www.icdchess.com/forums/1/message.shtml?197927 >>> >>>Well, you don't show anything there to back up the claims that their algorithms >>>are outdated. No new revolutionary algorithms have been presented that would >>>make DBs outdated, >> >>It is known that DB did not use the null move pruning. >>The null move pruning was known in 1997 but they did not use it. > > >Uri , you anticipated me for few minutes...I was just going to write the same >matter on null move forward pruning... > >> >> and how complex/good their eval is we don't know. Since they >>>could make complex eval for free in hardware, it might just be much better than >>>todays micros. >> >>I do not believe that it was better than today micro. >>I analyzed the games andthe fact that deeper blue could not see Qe3 in the pv of >>game 1 suggest that their search rules and their evaluation was inferior. >> >>I saw no evidence for a move that top programs of today need a long time to find >>and other people also analyzed the games and found no evidence for it. >> >>It seems that every move in the games can be played after some minutes by one >>of the top programs(not always the same program). >> >>> >>>Perhaps a real expert may be able to say something about this if he was to >>>scrutinize the DB moves in the last match and compare them to the moves Fritz >>>would make if given a lot of extra time. But it would be hard to be fair there, >>>since "nodes" aren't equal. >>> >>>Regards, >>>Jesper > >Well, Uri is a real expert and did the analysis , so you get what you wanted. Thanks but it is not based only on analysis of me. I admit that I did not analyze most of the positions of the games but other people also analyzed the position of the games and it is based on previous discussions. I remember that people tried to find moves that programs cannot find I remember that in game 2 they found two positions when Deep Fritz could not find the move but in one of them Junior could find the same move in few minutes and in another one of them Gandalf could find the move in few minutes. Uri
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