Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: Odd behavior in lazy eval

Author: Scott Gasch

Date: 12:18:19 10/19/04

Go up one level in this thread


On October 19, 2004 at 10:25:43, Anthony Cozzie wrote:

>
>You are getting a lot of nodes - but you have no idea why.  Zappa has an option
>to create a logfile (usually some GB in size) of every node.  I have a specially
>written GUI that can then view this and show every move it considered and what
>the depths and alphas and betas and scores were.  If you do this, you will be
>_amazed_ at what stupidities you find.  If you don't feel like writing a GUI,
>you can write a logfile and grep through it, although if you are serious about
>getting a strong program I think a GUI is worth it.
>

FWIW I do the same thing with a huge logfile (XML) and a graphical tree viewer.
It's very slow and I can only stand to do small (5-6 ply) searches in it.  But
it is very useful -- I found several issues in my search by puzzling over the
output in the viewer and would highly recommend other chess programmers do this
type of thing.  It's not hard to code up... to display chessboards I just hacked
up a feature that kicks off winboard passing it a FEN on the commandline.

There's also a shareware chess program tree viewer that someone on this board
probably knows more about than I do.  I think theres a link to it on the CCC
search page.

Scott



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.