Author: Robert Hyatt
Date: 12:08:29 07/27/99
Go up one level in this thread
On July 27, 1999 at 13:37:50, José de Jesús García Ruvalcaba wrote: >On July 27, 1999 at 09:39:12, Robert Hyatt wrote: > >>On July 27, 1999 at 08:09:28, Chris Carson wrote: >> >>>On July 27, 1999 at 02:29:03, Gregor Overney wrote: >>> >>>>Using CM6000, I enjoy playing against different levels. What is the best way to >>>>implement this "level control" feature into a Chess program? Truncation of >>>>search depth? Adding randomness to score evaluation? >>>> >>>>If not too time consuming, it would be great to add such a "level control" to >>>>Crafty? - Or, do you know about settings for Crafty that make it play like an >>>>1800, 1900, 2000, and/or 2200 USCF rated player? >>>> >>>>Gregor >>> >>>Here are some things I have tried, let me know your feedback: >>> >>>Crafty (1200): Create Book = 10, Set Depth = 4 ply, Pondering = off, >>> Learning = 000, no endgame tablebases >>> >>>Crafty (1400): Create Book = 20, Set Depth = 5 ply, Pondering = off, >>> Learning = 000, no endgame tablebases >>> >>>Crafty (1600): Create Book = 30, Set Depth = 6 ply, Pondering = off, >>> Learning = 000, no endgame tablebases >>> >>>Crafty (1800): Create Book = 40, Set Depth = 7 ply, Pondering = on, >>> Learning = 000, no endgame tablebases >>> >>>Crafty (2000): Create Book = 50, Set Depth = 8 ply, Pondering = on, >>> Learning = 111, 3 piece endgame tablebases >>> >>>Crafty (2200): Create Book = 60, Set Depth = 9 ply, Pondering = on, >>> Learning = 111, 3&4 piece endgame table bases >>> >>>Variation on each rating can be made by using different opening books, >>>setting king safety, setting piece values, ect... >>> >>>Best Regards, >>>Chris Carson >> >> >> >>I don't believe those will work as expected. IE I don't believe that crafty >>at 9 plies is going to play like a 2200 player. It will still find mates in >>10+, and find tactical shots that a 2200 player won't find. >> >>I think the new 'eval' command (that lets you scale various parts of the eval >>up and down) gives a more realistic 'feel'. And the 'extension' command lets >>you tune down search extensions to stop the deeper combinations without making >>it play like an idiot... > >Hi Bob, > I do not see anything about the 'extension' command in the crafty.doc file (I >have just downloaded it a few minutes ago). >José. you might have to look at option.c... if it isn't in the .doc I'll add an explanation however..
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