Author: Robert Hyatt
Date: 06:39:12 07/27/99
Go up one level in this thread
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...
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