Author: Ingo Bauer
Date: 01:28:35 04/16/05
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Hi Maybe the helpfile from www.shredderchess.com is usefull. Nevertheless, here is the help from the classic GUI Bye Ingo 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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