Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: Gambit Tiger fails to win won game allows position to become blocked

Author: Robert Hyatt

Date: 19:00:36 05/04/01

Go up one level in this thread


On May 04, 2001 at 15:24:26, Dan Andersson wrote:

>Succinctly put :) Its good to know that many good ideas are constantly
>reinvented. But history teaches us that bad ideas are at least as
>indestructible. Back to chess, the concept of 'Loose Pieces Drops Off' or LPDO
>for short is another good one. A penalty for each unguarded piece, and maybe a
>higher order term for coupling the penalties. The concept is based on the
>observation that manywins in chess are based on the gradual disorganisation of
>the opponents pieces and then finished off by a relatively short combination
>winning material. Some testing makes me feel that deep searchers profit more
>from this factor. An added bonus is that it is possible to choose a tricky move
>even in drawn positions i.e. Tablebase accesses.
>
>Regards Dan Andersson


I do your "LPDO" idea but change P to "Pawns" for me.  IE I don't just sum
isolated or weak pawns, I exponentially sum them, so that two are more than
twice as bad as one, etc...  Ditto for my blocked pawn and lever scoring...

I don't try to evaluate "hung pieces".  I depend on the search to find and
remove those before letting Evaluate() have a shot at scoring the position...



This page took 0 seconds to execute

Last modified: Thu, 15 Apr 21 08:11:13 -0700

Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.