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Subject: Re: Crafty Book Implementation

Author: Daniel Clausen

Date: 09:00:41 06/12/01

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Hi

On June 12, 2001 at 09:16:58, José Carlos wrote:
[snip]
>If you allow transpostion from non-book positions, you can get the behavour
>you discribed. But if you don't, you have to face the possibility of a human
>player transposing to drive you into a trick.
>I'm at work, so I can't figure a real example, but imagine that, in the
>example you gave, axb5 was wrong due to a deep trick. A smart GM could drive
>you into that position, and the Crafty would (possibly) take the bishop
>happily.
>So, the way you do things, you'll take the piece and win easily most of the
>times, but can fall into a trick, and lose badly in an important game.
>Allowing trasposing always, you'll miss those easy wins (but you'll probably
>win anyway, since a player that gives a bishop for free will always lose
>against Crafty) but avoid the GM trick.

I would consider this "optimizing at the wrong places". While I can imagine that
such an example exists, I don't think it's worth the time. :)

I've always imagined that, should I ever play against Kasparov and see an
unprotected queen from him for no (for me) obvious reason, I still wouldn't take
it, because I'm sure there _will_ happen something bad if I capture it. Of
course something bad will also happen if I choose another move, so it doesn't
really matter. :)

Btw: Wasn't it GM Larsen who once played against Deepthought, captured an
unprotected knight and then DT announced a mate in 18?

Sorry I got carried away a lil here. I realize that all these cases are not the
same, but still they're related a bit.

Regards,

Sargon

--
One day Alice came to a fork in the road and saw a Cheshire cat in a tree.
"Which road do I take?" She asked.
His response was a question: "Where do you want to go?"
"I don't know," Alice answered.
"Then," said the cat, "it doesn't matter."

   Lewis Carroll
   Alice In Wonderland



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