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Subject: Re: Chess Strategy (was Chess-programming ethics).

Author: Fernando Villegas

Date: 17:18:04 06/12/98

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Hi Don:
Thanks for you detailed and learned answer about my question. You have
pitedf all in few and exact words and still you agree with me that
pèrhaps, then, CSTAL is using another kind of approach. You name two
different styles of playing chess and maybe we could divide the second
one in another category that was very well represented by Lasker style.
You know, he played unsound moves just top create problems in the
adversary. He played on the supposition -thjat I thionk is correct- that
chess is a fight, not a math exercize where precise and demostrabvle
methods are the core. Human nature is not done for that, so we invented
Dr Spock to supply that :-)So, lasker even did not bother eith openning
theroy, but jts played good enough there not to be killed and then he
begun to to put traps all around until the oponent fall. And how he
puted taps? Just not playing the very best, but the most commplicated,
complex move. Fron the point of view of a computer, I suppose this cvan
be done selecting moves that have the widest gamut of answers with the
widest gamut of bad scores IF the oponet mistake. Of course, this should
be suplememntd with a more coventional approach in ordeer to kil at once
if such a killing move is available. In other words, if CSTAl see a mate
attack following thebest moves, he will execute that, nos sense there to
find complications, but if not -and there should be the trick in the
evaluation function- then CSTAL, once whe did not find the killing move,
maybe then he looks for this kind of complicated moves to crate havoc.
Probably there is even another factor of moderation in terms of
posiitional considerations. Nevertheless, the very fact that CSTAL do
sucidal moves teach me that then this search for complications exist and
maybe in a exagerated degree. Chris has been very emphatic in saying he
has created something different and I take his words asas serious
statements. I have played many games with CSTASL and I can say that is
not easy to grasp the intrincacies of his attacks IF you are playing
seriously with a clock ticking at your side. That's the emotion of this
program, his value.
Happy week end
Fernando



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