Author: Christophe Theron
Date: 18:57:56 11/01/99
Go up one level in this thread
On November 01, 1999 at 20:41:08, Charles Unruh wrote: >Inquiring minds want to know! Respond to what exactly? I just agree with Bob on this issue so I did not feel the need to respond... Christophe > >>On November 01, 1999 at 10:56:41, Bas Hamstra wrote: >> >>>Hi, Vincent, >>> >>>Why you always say piece square programs are worth nothing? Not that I use them, >>>but I am still considering it. >>> >>>Because you can put much more knowledge in your program than in a ordinary >>>endnode processor. You can build enormous expertsystem-like evals and still have >>>a reasonable speed. >>> >>> >> >> >>They really don't work very well. Because what you evaluate at the root is >>_nowhere_ near what you reach at the tips. I, too, believe that piece/square >>tables offer some good things... ie what better way to determine that a piece >>is centralized, or on the edge of the board. But that ends up being < 1% of >>what you want to know about a position. >> >>Berliner described 'discontinuities' in the evaluation function some 20 years >>ago. This is a perfect description of what piece/square tables do today. Every >>new move has an eval that is discontinuous from the previous move. Which is not >>the way to win chess games over the long haul. Frans showed that they can be >>effective. But over time, others have shown that (at least against humans) this >>is not the way to go. Computer vs Computer? Who knows or cares... >> >> >> >>>Succes op het NK! >>> >>>Regards, >>>Bas. >>> >>> >>> >>>On November 01, 1999 at 09:03:20, Vincent Diepeveen wrote: >>> >>>>On November 01, 1999 at 05:07:36, blass uri wrote: >>>> >>>>>On November 01, 1999 at 03:34:38, Jeroen Noomen wrote: >>>>> >>>>>>On November 01, 1999 at 03:00:04, Harald Faber wrote: >>>>>> >>>>>> >>>>>>>Isn't it amazing, the great Tiger far behind? :-) >>>>>> >>>>>>Chess Tiger is very unlucky in this tournament. It had great positions >>>>>>against Nimzo, Diep and Insomniac, but failed to win them. >>>>>> >>>>>>Best regards, Jeroen Noomen >>>>> >>>>>I did not see a clear advantage for tiger in the games against diep and >>>>>Insomniac >>>> >>>> >>>>DIEP was desparate against Tigre short after book. Then lucky Tigre >>>>allowed to exchange pieces. Then score got zero and the endgame tigre nearly >>>>played f6?? at a point but lucky for tigre failed low in time and played >>>>a much better move. >>>> >>>>I'm very impressed by the good preparing of Jeroen. I'm not impressed by >>>>the Tigre engine. >>>> >>>>Piece Square tables in the way tigre uses it don't work anymore. >>>> >>>>It was having the fritz5.16 phenomena bigtime. Before exchanging queen >>>>very happy. Then after it was exchanged suddenly seeing it was a more or >>>>less drawn position. >>>> >>>>> >>>>>Uri
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