Author: Robert Hyatt
Date: 20:22:44 05/25/02
Go up one level in this thread
On May 25, 2002 at 11:37:14, Vincent Diepeveen wrote: >On May 24, 2002 at 21:24:38, Robert Hyatt wrote: > >Article about deep blue. June 2001, written by Murray Campbell, >Feng Hsiu Hsu and Hoane. > > "the opening book was written by GM Joel Benjamin with > assistence of Nick de Firmian and John Fedorowicz and > Miguel Illescas. The book consisted of about 4000 positions > and every position had been checked by Deep Blue in > overnight runs." > >behind that there was an automatic generated book consisting >out of 700000 PGN games. > >So so i conclude 4000 hand given in moves. That's pretty little >for a tournament book, but was very common in 1997. > I conclude several million moves, with 4000 specially selected moves in key positions... This is the way they always did their book. It is the same way we always did our book too. Play a "big book move" unless there is a "guidance move" that overrides that. >So Nxe6 was NOT given in by a GM obviously. Chance is zero >it was in tournament book. 4000 hand given in moves is >real little and for sure didn't have a weird and stupid >Caro-Kann line inside it (apart from that Kasparov never >plays caro-kann also that he would play h6?? is unlikely). > >So Nxe6 came out of automatic generated PGN, and was NOT given >in by any GM. I agree... > >>On May 24, 2002 at 09:05:08, Vincent Diepeveen wrote: >> >>>On May 24, 2002 at 01:17:47, Terry McCracken wrote: >>> >>>As we see in DB description in their article, >>>it had only 4000 book moves, so Nxe6 was not inside >>>this book for sure. Nxe6 came out of an automatic >>>generated book. >> >> >>This is wrong. DB claimed to have "practically _every_ chess game ever >>recorded in PGN" in their opening book. They had a hand-tailored book >>much like the way I do "books.bin". But their base book was huge. This >>was reported by them multiple times. >> >> >> >> >>> >>>As we know nowadays you can beat an automatic generated >>>book very easily by playing mainlines. >> >>I would not say "very easily". >> >> >>> >>>>On May 24, 2002 at 00:01:02, Uri Blass wrote: >>>> >>>>>On May 23, 2002 at 20:43:18, martin fierz wrote: >>>>> >>>>>>On May 23, 2002 at 19:37:34, Joshua Lee wrote: >>>>>> >>>>>>>I Thought some of you might be interested that if you play through this movie >>>>>>>slowly you can clearly see Deep Blue's PV and other stuff. It looks like in one >>>>>>>scene that Deep Blue was using Xboard. I don't know what else you can decipher >>>>>>>from any of this but it is the clearest thing i've seen. >>>>>>> >>>>>>> >>>>>>>http://www.chessbase.de/vw_phaeton_kasparov.mov >>>>>> >>>>>>what i saw was that the footage of kasparov was probably from the infamous game >>>>>>6 in the second match - you can see him go 5. ...Ng8-f6 - and two moves later he >>>>>>will lose the match with ...h6?? ... >>>>> >>>>>Kasparov did not lose the 6th game by h6. >>>>> >>>>>The problem was that kasparov did not know how to play later and did many >>>>>mistakes. >>>>> >>>>>The first one of them was Qe7 when I believe that a simple capture of the knight >>>>>by fxe6 can win the game. >>>>> >>>>>I rememeber that I tried to play Genius3 against itself after fxe6 in unequal >>>>>time control after the match and black won the game inspite of the fact that I >>>>>gave white more time. >>>>> >>>>>30 minutes/move for white and 3 minutes/move for black on p100 at that time. >>>>> >>>>The problem was that kasparov did not know how to play later and did many >>>>>Uri >>>> >>>>mistakes. >>>> >>>>He knew as much as anyone after the error, 7...h6?! >>>> >>>>I can't see how you can say this about the best player in modern history, if not >>>>all-time? >>>> >>>>The first one of them was Qe7 when I believe that a simple capture of the knight >>>>by fxe6 can win the game. >>>> >>>>Can you prove this? Of course not, as after Nxe6!!? it's too complex and _all_ >>>>GM's in their right mind's would avoid the sacrifice. >>>> >>>>Joel Benjimen was correct including 8.Nxe6 in DB 2's book! >>>> >>>> >>>> >>>>Uri, after after 7...h6 Kasparov was in a terrible situation. Out of 10 GM games >>>>with 7...h6, prior to Kasparov, (instead of Bd6 followed by 8.h6) 9 were lost! >>>> >>>>Against Deep Blue II, I would have to say Kasparov had little chance due to his >>>>state of mind and the awesome calculating abilities of the machine. Virtually >>>>Kasparov lost at move 7. >>>> >>>>He may have had better trys then Qe7?! but that's moot, as the tactics favoured >>>>this tactical monster. >>>> >>>>Genius 3 on a P-100 will not give a great deal of insight on DB 2 after 8. >>>>Nxe6!!? >>>> >>>>Regards, >>>> Terry
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