Author: James Robertson
Date: 11:57:38 02/17/99
Go up one level in this thread
On February 17, 1999 at 13:58:38, Vincent Diepeveen wrote: >On February 17, 1999 at 13:41:33, Will Singleton wrote: > >> >>On February 17, 1999 at 08:18:01, Djordje Vidanovic wrote: >> >>>Bob, >>> >>>I read your report carefully. The story is over for me. I know where I am now, >>>and what I have been doing. About my doubts -- yes, I did have them but there >>>was that different style of play, my good faith and a rationally based >>>conviction that the author is a brillant person. For all I know the author IS a >>>brilliant person. However, I have enough evidence now to form my opinion about >>>those early versions of Voyager -- R=3, some eval changes (e. g. bishops getting >>>more bonus vs. knights than you assigned), plus some other Voyager specific >>>changes which I will not mention now as the author is still, I think, working on >>>the program (hopefully making a wholly new product). Bob, thanks for doing what >>>I thought you should surely do -- presenting evidence. From now on, the version >>>playing on ICC (a terrific blitz player otherwise) will be labelled as Voyager, >>>by Robert Hyatt, modified by G. Mueller. I do intend to run it more when I have >>>time, as I truly believe it to be one of the best blitzers on the Net. >>> >>>There are some other points that I have raised in the discussions with Dan Homan >>>and Jeremiah Pennery that I think are worth further elucidation. Perhaps later >>>at some point. >>> >>>Regards, >>>Djordje >> >> >>Looking at the results of testing posted on your website, it appears that Mr. >>Mueller has done something pretty remarkable; that is, he has found significant >>grounds for improvement in a program that has been under development for years >>by RH. What, exactly, are the changes that have improved it? For a program >>that beats Crafty on equal hardware in *every* single match (as you state), I >>think people would be extremely interested to know how he did it. This could be >>very exciting. >> >>Would it be possible to post or otherwise publish the parts of the code that >>were changed, so that we may share in this great achievement? >> >>Re your new labeling of MagusX, etc, I don't know if Bob wrote a program called >>Voyager. I thought it was Crafty. Other people have modified versions running, >>and to my knowledge they retain the Crafty name. Maybe I'm wrong about that, >>don't know. > >I don't think so that voyager is improved compared to crafty. > >It uses R=3 and some alpha beta dependant extensions, and a good book. > >That is: at blitz it seems a little faster because of this R=3, however >i'm sure that at a slow match it will not perform better than crafty. >It shows *exactly* the same scores and mainlines after say 12 or 13 ply >search. Would it help Crafty to find out how much time it has left, if it is less than say, 15 seconds, set R=3, otherwise R=2? James > >I doubt whether some alfabeta dependant extensions which solve some >problems quicker will *ever* make a program play better in a 3 mins a move >match at reasonable hardware. > >>Will
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