Author: maria clara benedicto
Date: 23:33:26 08/07/02
Go up one level in this thread
Hi Mike, just a question bout default strength. if i just use your new crafty 17,.16SE as is, without setting "krafty", what is its strength? pawngrabber or high_master? thanks Mike, regards maria On August 08, 2002 at 01:21:15, Mike Byrne wrote: >To My Fellow Crafty Friends: > >Sorry for the delay - I was testing a change that ultimately did not work out >well. This was almost Crafty 17.17 SE ;>) > > >"Crafty 17.16 SE a" is available for for free via email to mfbyrne_pa@msn.com. >Once you are on the list, there is no need to resubscribe. You will continue to >get free updates for as long as I feel like doing updates :). Should you ever >wish to be removed from the mailing list, simply type "remove" in the subject >field and I will remove you from the list. > >Crafty 17.16 SE is an "unofficial" release of a modified "Crafty" chess program >that is authored by and copyrighted by Dr. Robert Hyatt. My changes are just a >few lines of code of thousands and thousands of lines of code written by Bob >Hyatt. He is most gracious for freely sharing his chess program source with the > world and without him - modified Crafty 17.16 SE simply does not exist. > > >Crafty 17.16 SE Update A - > >We now have 16 predefined levels of play - winding its way from "pawngrabber" to >"standard" by using the "krafty" command. Each level has increased >understanding of piece value and a deeper search. To gain more flexibility, >search depth was replaced by nodes searched in these predefined settings. In >addition levels "pawngrabber" through "high_master" use the new option "dm" ><delay move> automatically. > >So that if you play a 5 3 game on any setting, it will respond as if it was >playing a 5 3 game and not move instaneously. The idea behind this is that in >typical low settings, the computer will often respond instaneously - which is >not how a human opponent would play. This will give the lower settings a more >natural feel for the player. With the 16 predefined settings, you work your way >up through the different levels. Each subsequent level has a better piece >evaluation and and sees a about twice as deep as the previous level. The goal >was to make the levels progressive in a natural stepping up process. I estimate >that each level has a difference of about 100 elo points - starting with >"pawngrabber" at ~1000 ELO and ending with "high_master" at around ~2200-2300. >The "IM", "GM" and "Standard Levels" do not have any restrictions on depth and >would be considered "professional" levels. > >Also, you would be please to note that Bob Hyatt indicated to me today in an >email that he will incorporate the new "dm" command in his next "official" >Crafty release. > >Type "dm" at the command prompt to see that this command works. It may be set >via the crafty.rc file - it is automaticaly set when you use the lower 13 >predefined krafty levels. > > >I am only sending out one execuable as I modifed my compiler settings and the >optimal settings now work for all processors. If you find this version slower >than previous versions - let me know. It is the fastest version for my P4. > >Again, I believe the strongest "play" settings are: > >================================== >crafty.rc file >================================== > >booster 60 60 225 >ext in .75 >ext th .75 >ext rec .75 >ext p .75 >ext one .75 > >=================================== > >Some chess problems are solved faster by using these settings- but in most >positions it will just take longer to to the same answer.: >================================================ >booster 76 76 225 >ext in 1 >ext th 1 >ext rec .75 >ext p .75 >ext one .75 >================================================ > >As always, you may be removed from this email list by simply responding to this >email and typing "remove" in the "subject" field. > >Best Regards, > >Mike Byrne > > >
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