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Subject: Re: "The Tale of a Small Tree" by M.M.Botvinnik [fragment]

Author: Robert Hyatt

Date: 05:59:18 03/10/00

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On March 10, 2000 at 04:57:42, Torstein Hall wrote:

>On March 09, 2000 at 20:58:09, Robert Hyatt wrote:
>
>>On March 09, 2000 at 16:58:07, José Antônio Fabiano Mendes wrote:
>>
>>>[....]Three Studies
>>>Eleven studies had long since been prepared for testing
>>>the program---several years earlier I had written in an
>>>introduction to a collection of studies by G.Nadareishvili
>>>that it was with studies that one should begin experiments.
>>>My reasoning was simple---in studies there is forcing tactical
>>>play,positionnal evaluation is not needed,and since positional
>>>"understanding" was to be the last thing to be put into the program,
>>>one should therefore begin with studies...
>>>We began with a famous study by Réti.
>>>[D]7K/8/k1P5/7p/8/8/8/8 w - -
>>>    White to play and draw
>>>What could be simpler,and at the same time cleverer than this
>>>composition?[....]
>>>And so,during December 1976 to January 1977,"Pioneer" solved
>>>Réti´s study.We thought that it would all be very simple,but
>>>it proved to be highly complicated.Without any positional
>>>evaluation,and without the attachment of the endgame library,
>>>the tree "disintegrated".The computer had little other work,
>>>but hours went by,and still no result.It became clear that
>>>"Pioneer" needed help!
>>>We took the rule of the square,programmed it in three modifications,
>>>put it into the library,and at each node of the tree "Pioneer"
>>>received from the library the necessary information.The effect
>>>was staggering:the study was solved within 70 minutes,and in the
>>>search tree there were only 54 moves.This small "human" tree was
>>>first obtained on 28th January 1977---without doubt a significant
>>>date in cybernetics.[...]
>>>Source:"Selected Games 1967-1970",M.M.Botvinnik,Pergamon Press,1981,
>>>pages 299 and 300
>>>So it seems that,contrary to widespread belief,Botvinnik thought his
>>>computer-chess work to be very important.  JAFM
>>
>>
>>He thought it very important...  most of the rest of us didn't...  as it
>>seems that most of the results were faked...
>
>What do base your conclusion that the relults where faked on?
>
>Torstein


Some PVs he published in the JICCA that were obviously 'faked'...  he would
make a comment that pioneer decided "this variation can be stopped as obviously
white is winning" but in another almost identical position, pioneer would keep
searching.  Hans Berliner had a very good (if very abrasive) rebuttal article
that he published in the JICCA in response to Berliner's article.  His analysis
was concise, accurate, and devastating to Berliner's statements...




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