Author: Dave Gomboc
Date: 13:08:35 09/20/03
Go up one level in this thread
On September 16, 2003 at 22:02:26, Vincent Diepeveen wrote: >On September 15, 2003 at 18:56:30, Mike Byrne wrote: > >>On September 15, 2003 at 09:11:25, emerson tan wrote: >> >>>I played a 24 game match between Shredder 6.02 and Hiarcs 7.32 with the >>>following opening. >>> >>>1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nd7 5.Ng5 Ngf6 6.Bd3 e6 7.N1f3 h6 8.Nxe6 >>> >>>Time control was 40/4hrs + 20/2hrs + 2hrs to finish on a 1.8 Ghz processor. >>> >>>Shredder played all the white games and Hiracs all the black games. The score >>>went 13-11 in Hiarcs favor. Only a couple of games were drawn. >>> >>>I choose Shredder 6.02 to have white because it likes whites position and >>>without an opening book, it will play the 8.Nxe6 sacrifice. Also, Shredder has a >>>positional learning. I choose Hiarcs for black solely because of its positional >>>learning. Positional learning is important in this one opening match since it >>>will be able to learn and improve its next play based on the same opening. >>> >>>Maybe 8.Nxe6 is not a forced win for white. Maybe Kasparov can study it and use >>>it in some high profile match against computers since most of the programmers >>>might put it in their books thinking its a forced win for white. >> >> >>There is one hint that Joel Benjamin likes Nxe6 - since this move was not >>calculated but in DB's opening book. Although not certain, I suspect to leave > >No it was not put in the book by Joel Benjamin. > >They had a big random book and this definitely was played out of a random book. >No chance they could guess kasparov would play this line in caro-kann against >them. > >Benjamins book was just 4000 moves. See Hsu's publication in Artificial >Intelligence journal. > >With 4000 moves you can't even cover a few lines of the najdorf. > >Best regards, >Vincent My recollection is that 8. Nxe6 was the last move in the small book in this variation -- the next few moves afterward came from the extended book. The GMs doing the opening preparation left it in there because DB, thinking on its own, gave Nxe6 a plus score and preferred it to all alternatives anyway, and none of them thought Kasparov would actually go for the line so they didn't worry about it too much. Dave
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