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Subject: Re: Junior's long lines: a witness speaks

Author: Chris Whittington

Date: 02:44:26 12/25/97

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On December 25, 1997 at 03:48:05, Christophe Theron wrote:

>
>On December 23, 1997 at 17:44:08, Thorsten Czub wrote:
>
>>>Think that this board was a mistake.
>>
>>I don't think so.
>>No Tueschen, no KK-newby-advises and instead Don and Amir and and and
>>many others. Thats more than you could expect.
>
>This board is interesting. Things of interest happens here, and real
>computer chess stuffs are discussed.
>
>The only bad thing is that people always feel the need to say something,
>even if they have nothing to say. For example: I have nothing special to
>say about journalism, but with this sentence I just managed to say it!
>And the problem is that this thread could quickly become: "what to do if
>you have nothing special to say today about journalism". This thread
>could well continue until year 2000, and become 90% of the postings on
>CCC.
>
>So I just go back to computer chess and, yes, I saw Junior in Paris. One
>day, it was doing a kind of self-play. I suppose Amir was testing the K6
>computer. The rate of play was roughly 1s/move. I was very surprised to
>see very long lines on the screen and stood there for a while.

At 1 sec per move self-play how do any lines stay for a 'while' ?

>In only
>1s Junior was able to compute 10 or 12 plies lines. And the last moves
>usually were not captures.

Holding the hash table over from the previous, and then prinitng the
line by walking the hash table ? Gets a build up of depth to the lines
from the previous searches ...... ?

Chris Whittington


>
>I don't like to bring unverified news, so maybe Amir could confirm what
>I say. I often read postings from him on CCC, so he's likely to read
>this tomorrow!
>
>Anyway, I was impressed by Junior's depth. As a chess programmer I would
>like to achieve something like that. My program, Chess Tiger, is fast
>and usually reaches ply 8-9 in blitz on a P200. But Junior's algorithm
>is smarter. The only program I know with a similar behaviour is
>Genius...
>
>
>    Christophe



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