Author: Uri Blass
Date: 07:31:53 09/22/03
Go up one level in this thread
On September 22, 2003 at 08:46:18, Vincent Diepeveen wrote: >On September 21, 2003 at 22:10:52, Dave Gomboc wrote: > >>On September 21, 2003 at 20:04:21, Vincent Diepeveen wrote: >> >>>On September 20, 2003 at 16:12:18, Dave Gomboc wrote: >>> >>>no way they could predict he would go caro-kann, so the statistical chance in a >>>4000 move book this line was there till nxe6 is like zero. >> >>The GMs doing DB's opening tuning had that position up and running on DB -- >>briefly -- as they were booking it up. It could be that they saw it would play >>Nxe6 out of the extended book, saw that it liked its position as White there, >>and left it alone. Whether it was in the small book or the extended book, the >>important thing is that DB was comfortable playing Nxe6 on its own, and they let >>it do so. >> >>Dave > >That's just another BS marketing story which is not true. > >Just like the marketing story that in a 12 stone double rook endgame deep blue >managed to keep a draw because every move was perfectly played thanks to an >incredible big endgamedatabase. > >In fact marketing department said something even more overreacted, 30 seconds >after the game had ended in a draw. > >It's here just like that too. > >Those GMs didn't even have the time to prepare caro-kann further than move 5, >let me assure you that. > >4000 bookmoves that's something very very tiny! > >Also you enter 4000 bookmoves eyes closed in 8 days. > >Kure told he usually enters around 2000 bookmoves an hour. If your claims is correct then it means that he cannot have a good book. You cannot be sure of no errors with 2000 moves per hour. There are a lot of lines that you do not know how to evaluate and you need to analyze them before deciding if to put them or not to put them in a manually generated book. Analyzing them is not only deciding if they are good or bad but also analyzing if the specific program knows to play well after them. > >So for the experienced openingsbook creators here, 4000 bookmoves is just 2 >hours. > >That typically describes the contribution of the GM's to the openingsbook. > >Hsu always believed in autogenerated books. > >Only in october 1997 that believe was interrupted rudely by Kure who with a very >poor program, managed to score many points, just based uponb ook. Nonsense. Kurt played a tournament when both sides use the same book and Fritz scored better than programs like ruffian. Fritz is not the best program today(shredder is better) but it is not better than Ruffian because of opening book. I also remember that Kurt also found that Ruffian does slightly better against the commercial programs when both sides use their own books and not when both sides use an external book and play both sides of every opening. Uri
This page took 0 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.