Author: Ed Schröder
Date: 08:35:14 08/12/04
Go up one level in this thread
On August 12, 2004 at 10:28:33, Albert Silver wrote: >On August 12, 2004 at 02:34:46, Ed Schröder wrote: > >>On August 12, 2004 at 01:38:58, Telmo C. Escobar wrote: >> >>> >>> I have observed that the main personality (Rebel.eng) has a line that reads >>> >>>[Chess Knowledge = 100] >>> >>>while the Karpov.eng personality has >>> >>>[Chess Knowledge = 250] >>> >>>instead. What does this parameter do? >>> >>> >>> Telmo >> >> >>http://www.rebel.nl/personal.htm >> >>Ed >Thanks again, and interesting. You mentioned in the descriptions the various >advantages of higher settings for some of the parameters, notably the Chess >Knowledge. Aside from the King Safety, I take it that you now believe the >default values are still best. Yes. Although Thorsten will strongly protest :) >A number of the settings aren't clear to me all the same. At least the >differences between them. There are a number of parameters linked to attacking, >such as Attack, King Safety, and Attractiveness. The difference between them is >very unclear to me. [Attacking = xxx] is meant to be the successor of [Anti-GM = xxx] but since I don't compete any longer against GM's I have no idea how it would perform. The function searches for complexity on the board. [Attractiveness = 125] simply is a multiplier of all positional components of a position. A value of 125 will multiply the evaluation with 1.25 >Another point is the selectivity of the search. I see Selective Search = 100, >and below a group of settings called Adjusted Selectivity (turned off, but >still). There's also the setting of Search Technique. I noticed in the 10.5 >description a Deep, Deepest, etc. In PD it is Null Move. I take it that they >turned out to be less efficient? It's best to ignore these options, if there is an improvement after all it is very small. Just keep the default settings. > Albert > >P.S. In the position with 1.e5!, wasn't it Spassky who played that move, and not >Capablanca? No idea. Ed
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