Author: Tina Long
Date: 01:16:21 08/11/99
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On August 10, 1999 at 03:13:44, Shep wrote: >On August 09, 1999 at 18:58:55, Dave Gomboc wrote: > > >>Can I ask how you decided that these were very good settings? Is it mostly >>based on "feel", or test suites, or tournament games, et cetera? How much >>computation was performed before deciding on these settings? > >Depends on what you consider "deciding". The settings were originally composed >just based on intuition (or "a wild guess" or "Voodoo", if you want :-). >Didzis and I have been testing them then to make sure they were not really >"offbeat". >Scoring 7/10 against other commercial programs so far and 16/21 in test games >against other CM personalities seems enough evidence they are "not bad" and >"probably very good" (and I do not just look at the results, but at the way the >games were played). >Note that the main settings have probably been thoroughly tested by Mr Bednorz >before recommending them; I have just tuned them slightly and improved (?) the >piece values, just like I did back then with my "CM 5555". >Maybe it was just luck again that my feeling about these settings was right, who >knows? :-) > >--- >Shep Hi guys, In my opinion, Ideally the settings need to vary as the game progresses. One set of settings for a whole game is several sets too few. Maybe extended selective search is better/worse in early middlegame/late endgame. Maybe CM should play defensively until the cracks appear & then switch to attacking. If CM manages to get a two-pawn advantage then it should desire to exchange pieces, if it loses a pawn then exchanges are less inviting. A human player varies their strategies & tactics as the game progresses. The Fritz GUI has taken a tentative step in this direction by allowing different engines for Strategic & Positional phases of the game. I could have two Fritz5.32's (with different names) tweaked for Strategic & Positional phases of the game. If I were playing a program against a person or a program, and I was allowed (& if I knew what I was talking about) I would certainly want to tweak the engine as the game progressed. That's why you have your mum on the sideline at Junior Footy, screaming "get back" or "go go go go go" or "kick him in the..." I digress. Maybe the future chess engines will let you tweak for different aspects of the game. Hi guys, Tina Long
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