Author: Chris Carson
Date: 06:59:06 07/27/99
Go up one level in this thread
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... Bob, I also think that the 'eval' command can be used to create more of a 'style' than just strength. I am more interested in style anyway. Any suggestions on these settings (so that strength is not lost only 'feel' is changed)? Defensive style Attacking style Solid style Gambit style Unortodox style Best Regards, Chris Carson
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