Author: Mike Byrne
Date: 13:07:01 06/01/03
Go up one level in this thread
On June 01, 2003 at 15:21:23, Christophe Theron wrote: >On May 31, 2003 at 22:01:49, Mike S. wrote: > >>(I'm forwarding a question from a german computer chess fan:) >> >>In Tiger 15's ct.ini, what do the settings "Niveau", and "TempsManip" mean, and >>what would be appropriate values for it? >> >>(I'd like to add the question, is it recommendable to edit these values >>manually, or should only the GUI do this?) >> >>Thanks to Christophe, or to anybody else who can answer this. >> >>Regards, >>Mike Scheidl > > > >"Niveau" is the ply depth. > >It is completely useless to edit this value: >* Either the value is ignored if you are using time controls >* or the GUI is going to overwrite it as soon as you select a ply depth level. > >"TempsManip" means "operator time". > >Again, it is useless to edit this value. > > >As a general note I would say that it is completely useless to edit anything in >CT.INI. Most values in this file are overwritten by the GUI. > >CT.INI does not contain parameters that could increase the engine's strength. >All the engine settings are internal and cannot be changed. > >There are some exceptions, and I know people will be delighted with these: > >* LargeurFen is the width of the alpha-beta window. Setting it to a lower value >(for example 10) will give some spectacular speedup in some cases. But it will >hurt the program's strength by adding instability to the search. I know, I have >experimented a long time with this parameter. > >* SelSafety is a selectivity parameter. Increasing it will make the search more >reliable (less tactical holes), but slower (in term of time to reach a given >depth, not in term NPS). Decreasing it will generate more search errors (holes). >6 is the optimal value in my opinion. I don't think a lower value has the >potential to prove better. Maybe a higher value has. > >* NSEW does something special and if people are interested I will say what in a >few days. Meanwhile I would like to know what people think about it. > >* The same applies to MoreSel. > >* MoreGambit sets the playing style of the engine. Normally this setting is >available from the GUI, but if you are using the ChessBase version the setting >cannot be changed from inside the GUI (it's a GUI bug). So you need to change it >manually by editing the CT.INI file. Here are the values: > -1: default Chess Tiger style, some find it a little passive > 0: default Gambit Tiger style: more King attacks > 1: Gambit Tiger aggressive style: even more King attacks > 2: Gambit Tiger Suicidal style: will do anything to go against your King >My own tests have shown that the values -1, 0 or 1 are interesting. Some people >have found that 1 (Gambit Tiger aggressive) is superior. > > >In general I would recommend to leave CT.INI alone. The big exception is that if >you are using the ChessBase version of Chess Tiger you MUST edit CT.INI if you >want to change the playing style of the engine! > > > > Christophe Thank you Christophe for the most interesting information regarding CT and the .ini file. I am copying and saving this one in word - it's a keeper.
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