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Subject: Re: Shredder 9 engine parameter settings

Author: Eelco de Groot

Date: 02:02:08 04/16/05

Go up one level in this thread


On April 16, 2005 at 04:28:35, Ingo Bauer wrote:

>Hi
>
>Maybe the helpfile from www.shredderchess.com is usefull.
>
>Nevertheless, here is the help from the classic GUI
>
>Bye
>Ingo
>

I don't have Shredder myself, I think I will buy a copy one of these days! I
know Haddad Zied on this forum has made new settings for Shredder 9:
http://www.talkchess.com/forums/1/message.html?420779 Still private settings for
the moment, but on Haddad's his site http://www.chesslovers.tk/ I saw there are
also files with settings for Shredder 7 and 8 for Blitz, Rapid and Classic
timecontrols.

 Regards, Eelco

P.S. Shredder's manual: http://www.shredderchess.com/manuals/ShredderManual.pdf

>
>
>
>Shredder's engine options
>
>
>
>You can modify the chess algorithms of Shredder and save different styles as a
>new engine. Those modified engines can be used like real chess engines in the
>engine dialogs.
>
>
>
> You can call the engine options dialog from the context menu of the engine
>window.
>
>
>
> Hint: The options depend on the active engine.
>
>
>
>
>
>Keep Hash Tables:
>
>Shredder is never clearing his internal hash tables -> this is good for games
>and analysis.
>
>
>
>Position Learning:
>
>Shredder remembers positions he has already analysed and played. With this
>option Shredder is trying to learn from his mistakes.
>
>
>
>Prefer Open Positions:
>
>The program prefers open positions. This may not always result in the best
>'absolute' move being selected, but rather the move that is most difficult for
>the opponent to play against.
>
>
>
>Use Tablebases:
>
>Set how Shredder is using the Nalimov endgame databases in its search.
>
>Never: Shredder never accesses the endgame databases
>
>Late: Shredder accesses them late and will not be slow down much.
>
>Normal: Shredder accesses them reasonably.
>
>Early: Shredder accesses them early and can sometimes be slow down a lot
>
>
>
>Draw Score
>
>This specifies how Shredder is evaluating a draw. If the value is below 0
>Shredder is playing to win, if the value is greater 0 often a draw is good
>enough.
>
>
>
>Clear Hash:
>
>After clicking on OK the internal hash tables are cleared. This option helps to
>get reproducible results.
>
>
>
>Clear PosLearing:
>
>Clears the file with all learned data from the hard disk. Shredder is loosing
>his learned knowledge.
>
>
>
>
>
>
>
>
>
>
>
>
>Values for the pieces:
>
>Specifies the value of the pieces in %. The default value for all pieces is
>100%. For example if Shredder is sacrificing too many pawns you can set the
>value for pawns to 110%. If you set the value below 100% Shredder is more
>willing to sacrifice pawns. You can set the values for all pieces depending on
>the game stage.
>
>
>
>
>
>
>--------------------------------------------------------------------------------
>
>
>
>Settings for the search (not Shredder Classic):
>
>
>
>Style
>
>Intelligent - Aggressive - Active - Normal - Solid
>
>You can specify how much Shredder should cut his search tree. Intelligent is
>cutting the most, Solid the least.
>
>
>
>Combinations
>
>All - Most - Some - None
>
>You can specify how many tactical lines Shredder should investigate. All are the
>most and None the least.
>
>
>
>Forward Pruning
>
>0...5
>
>Sets how many plies Shredder should cut senseless lines.
>
>
>
>Selectivity
>
>Sets how many plies Shredder should follow promising lines.
>
>At -3, -2 and -1 this value is set automatically. -1 the least, -2 the most, -3
>is in between.
>
>From 0 - 99 you can directly set the value in plies.
>
>
>
>
>
>
>--------------------------------------------------------------------------------
>
>
>
>Weights for the evaluation parameters:
>
>You can set the weight in % for the most important evaluation parameters in
>Shredder.
>
>
>
>King Safety
>
>Sets the parameter for king safety
>
>
>
>Center Control
>
>Sets the parameter for center control
>
>
>
>Pawn Structure
>
>How should Shredder evaluate certain pawn patterns on the board?
>
>
>
>Passed Pawns
>
>If for example you think that Shredder is over evaluating passed pawns you can
>set this value to 90 %.
>
>
>
>Bishop Pair
>
>How much should Shredder evaluate the bishop pair
>
>
>
>
>
>
>--------------------------------------------------------------------------------
>
>
>
>Time Usage
>
>With bigger values Shredder is playing slower but will certainly obey the time
>controls.
>
>
>
>Knowledge or Speed
>
>With smaller values Shredder's evaluation is faster but not so precise.
>
>
>
>Threads (only Deep Shredder)
>
>Sets the number of processors Shredder should use on a multi prozessor machine.
>The more processors Shredder is using, the faster and more efficient he can
>calculate.



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