Author: Dieter Buerssner
Date: 13:57:12 05/17/05
Go up one level in this thread
On May 17, 2005 at 14:29:19, Robin Smith wrote:
>On May 13, 2005 at 23:49:26, Komputer Korner wrote:
>
>"Komputer Korner",
>
>Your post is full of errors. See below for a point by point rebuttal.
>
>>On May 12, 2005 at 18:31:52, Dann Corbit wrote:
>>
>>>Bookups backsolving is basically a minimax algorithm + refutations.
>>>
>>>ChessAssistant does the same thing.
>>>
>>>It is a very good idea.
>>>
>>>IMO-YMMV.
>>The following explanation will prove that I am the real KK. Compare my answer
>>with logical opening theory articles and the 10 kommandments I did 5 years ago.
>>The problem is that minimax is only useful to a computer.
>
>Wrong. Minimax is useful to anyone doing tree searching. Chess masters use
>minimax all the time; they just don't call it that. Instead they say things like
>"16.Re1 initially looked appealing, but then I saw the killer reply Bxh7+". In
>essense this is a verbal description of either the masters thinking or the
>minimax algorithm.
Robin, I think, you are arguing for alpha-beta search here, not for minimax.
Minimax will always look at all moves, even when you already found a refutation
("beta cutoff") for you opponents last move. A similar term "brute force"
searching is often used for both, pure minimax and for alpha-beta (and as a
reader, it is not always clear, which one is meant).
A couple of years ago, I read some game analysis (description of his thinking
processes during the game) by Robert Hübner in a chess magazine. The way he
argued, I got almost convinced, that he used alpha-beta search. I will not be
able to give a correct citation to the article (it was in Rochade Europa). From
my memory he used phrases like: "there was no need to look for other
alternatives in this line, after I had analysed ... [he got a beta cutoff]" and
more such things. At that time I already understood alpha-beta search. It
seemed, he explained it in non technical words.
Regards,
Dieter
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