Author: Mike Byrne
Date: 22:26:54 10/24/02
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I forgot to mention - as before - those on the mailing list were automatically sent the latest version. PS - I only send out the latest verson - if you missed a previous version or deleted it by accident - you can always ask me to send you the current version. Mike On October 25, 2002 at 01:21:35, Mike Byrne wrote: >Crafty 19.01 SE is available for free via email to me : mfbyrne_pa@msn.com > >================================================================== >To My Fellow Crafty Friends: > >Crafty 19.01 SE Release > >Following Bob Hyatt’s release of Crafty 19.01, I am releasing Crafty 19.01 SE – >a modified version of the world class chess program by Dr. Robert M. Hyatt of >UAB. Dr. Hyatt, as always, is the legal owner of this software and maintains >the copyright. > >In addition to the 16 pre-defined "krafty" levels which remain the same, I have >added two new “full strength” levels – “morphy” (with very aggressive and open >play settings) and “petrosian” (with very defensive and close play settings); >the 18 levels are as follows in increasing level of difficulty: > >pawngrabber >beginner >novice >simpleton >woodpusher >knight >bishop >player >club >expert >lowmaster >master >highmaster >im >morphy >petrosian >gm >standard > > >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 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 >instantaneously. > >The idea behind this is that in typical low settings, the computer will often >respond instantaneously - 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 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. > > >example crafty.rc file ( a plain text file named "crafty.rc" place in the same >directory as the executable) >================================== >krafty gm >ext ch 1 >ext mate .80 >ext rec .80 >ext p .80 >ext one .80 >xboard >=================================== > >As always, you may be removed from this email list by simply responding to this >email and typing "remove" in the "subject" field. > >Also enclosed the new logo for Crafty 19.01 SE. > >There are a same modifications to the actual engine as before – only >incorporpating Bob Hyatt’s 19.1 changes. The Crafty 19.xx series is very strong >and my modified version may be weaker than standard crafty. > >The GUI Arena (freeware) works great with Crafty chess engines and clones. You >may download it from here. > >http://www.playwitharena.com/ > >Best Regards, > >Mike Byrne
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