Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: Chessfun and Nunn1 Tests

Author: Eelco de Groot

Date: 06:17:54 05/17/00

Go up one level in this thread



A belated thanks for your explanations, Chessfun! Sorry, I'm not very fast
answering. I was wrong then about why you wanted to do your tournament but I
think the other questions about pondering and the results of the matches at
different timecontrols are at least as interesting as your original reason; to
find out if you could reproduce Jouni's results. You were probably right that
the programs did not profit much from learning at the faster timecontrols. That
is if the two programs would have had some form of booklearning here which I
understand they don't because they didn't use their books in the Nunn matches.
In theory they could have done some position learning maybe. At first I thought
that could have been a possible explanation for the 11-9 result in the match
that accidently was run twice. You also reported that Fritz suddenly used a
whole minute of its allotted five to decide on castling in the looped through
match so I thought that could be the sign of Fritz using learning results and
some more time to find a better move. Fritz lost that second match howevever.
And when you say you repeated the match again with again a 15-5 score my
possible explanation doesn't stand up as a factor because learning, if any,
would then still have been on (It couldn't be turned off anyhow).

Theoretically I think a program could profit from such form of position learning
though. Suppose the timecontrol would not change and the program could store the
deepest evaluation of moves of some previous games those could be placed in the
transposition tables for a new game if it reached the same position there. If in
the previous game the evaluation had gone up or if it had gone down some moves
later in the game that could help the program some in calculating another move.
But this idea seems so obvious and I have never heard of any progam that
actually did this so I think I must have overlooked something here...

Anyway, thanks for looking at our questions!

Your new tournaments are looking interesting too! Am I correct that for the
first "Young Talents" tournament every engine did use its own opening book and
that they are now using either Fritz's book or Junior's book in the next two
tournaments? There we go again, questions, questions.. Sorry.

Eelco



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.