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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