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Subject: Re: Anybody else using this hair-brained concept...

Author: Peter Kappler

Date: 15:13:30 07/19/00

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On July 19, 2000 at 17:56:44, Larry Griffiths wrote:

>Hi,
>
>I have been re-programming my chess engine lately and have been implementing a
>concept that I saw posted here about a year ago.
>
>The concept is to look out from the FROM and TO squares when a piece is moved to
>determine what pieces need to have their moves re-generated.
>
>I am having second thoughts about this since it is about equal to
>generating moves for 2 Queens, 2 Kings, 2 Knights and 2 Pawns looking out
>from the FROM and TO squares.
>
>Is anybody using something like this, or even tried this?
>
>Larry


A couple of months ago, I seriously considered scrapping my move generator and
using an incremental scheme, like the one you described.  I spent a couple of
nights thinking about the design, and then decided it was too much work. :)

The big advantage I see is that you automatically get up-to-date attack
information, which is extremely valuable in an eval function.

I asked Bob about this a long time ago, and he said he started down this path
with Crafty before switching to bitboards.  I also think KnightCap does
incremental move generation, and the source code is available.

--Peter







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