Author: Mike Byrne
Date: 22:21:35 10/24/02
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
This page took 0 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.