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Subject: Re: Chess program improvement project (copy at Winboard::Programming)

Author: Stuart Cracraft

Date: 19:09:02 03/06/06

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On March 06, 2006 at 22:01:53, Dann Corbit wrote:

>Tactical strength is a necessary, but not sufficent, condition for general chess
>playing strength.

* Yep, and because it is necessary, I have to get it right first
otherwise I'll just pound my head against the proverbial wall.

>
>Most problems with WAC come from:
>1. Bugs in search, eval etc.  Is your eval symmetric?

  * Except for just a few terms, yes.

>2. Evaluation problems (especially king safety and passed pawn evaluation)

  * I fully implement all the king safety and passed pawn logic of Chess 4.7
    and also the weak pawns concept mentioned by Bob Hyatt recently.

>3. Search inefficiency (branching factor of a good program is definitely under
>4)

  * My branching factor is about 2-3 for these kinds of positions.



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