Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: Here's the suite

Author: Robert Hyatt

Date: 10:20:54 01/21/99

Go up one level in this thread


On January 20, 1999 at 17:06:59, blass uri wrote:

>
>I believe that all of the moves are right because I read that darkthought found
>all of them,  but there are some cases when there is more than one practical
>solution.
>I believe that Junior5's move Nf6+ in number 29 is also winning(The solution
>Nxh6 is the simplest).
>


the fact that Dark Thought (or any other program) gets the suggested best move
doesn't convince me those are right best moves.  IE I could easily pick a set
of 100 endgame positions that Crafty solves perfectly, without being sure that
the 'best move' is "the only best move that doesn't turn the game from a win to
a draw or from a draw to a loss."

That's not to say that Dark Thought is "bad" or that the key moves in the
positions are "wrong".  But I went thru a lot of this in the various suites
I run.  IE even in WAC Crafty found a couple of 'cooks' where it was thought
that in a couple of positions only one move would win.  But occasionally there
is a 'waiting' move that doesn't give up the win, but it might be hard to see at
first.

That's why I asked my question...  for each best move in the suite is it clear
that the best move is really the only move to play?  Or is it just slightly
better?  etc...


>
>I also know that Junior5 is bad at very simple positions relative to other
>programs.
>For example it could not solve position number 14 in 10 minutes.
>
>Uri



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.