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Subject: Re: Crafty 19.00 SE released. thanks (n.t.)

Author: maria clara benedicto

Date: 11:29:26 10/07/02

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ty

On October 06, 2002 at 22:02:51, Mike Byrne wrote:

>Email me for a free copy.
>
>The following email was sent to all previous recipients of my modified Crafty's
>and who did not asked to be taken off the mailing list.
>===============================================================================
>
>
>
>To My Fellow Crafty Friends:
>
>Crafty 19.00 SE Release
>
>Continuing with the standard of 17.16 SE, I am releasing Crafty 19.00  SE – a
>modified version of the wonderful chess program by Dr. Robert M. Hyatt of UAB.
>Dr. Hyatt is the legal owner of this software and maintains the copyright.
>
>The 16 pre-defined levels remain the same, they are as follows in increasing
>level of difficulty:
>
>pawngrabber
>beginner
>novice
>simpleton
>woodpusher
>knight
>bishop
>player
>club
>expert
>lowmaster
>master
>highmaster
>im
>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.
>
>The “booster” command was dropped as Crafty new extensions logic accomplished
>what I was trying to do, but more effectively.
>
>crafty.rc file
>==================================
>ext ch 1
>ext mate  .80
>ext rec .80
>ext p .80
>ext one .80
>===================================
>
>As always, you may be removed from this email list by simply responding to this
>email and typing "remove" in the "subject" field.   I have also enclosed the new
>logo for Crafty 19 SE.
>There are a few modidfications to the actual engine - nothing major - let me
>know if think it's better or worse than the unmodified crafty.  I think it's
>about the same.  The latest version of crafty is very strong and there wasn't
>much I can do to improve it.
>
>The GUI Arena (freeware) works wonderfully with Crafty chess engines and clones.
> You may download it from here.
>
>http://www.playwitharena.com/
>
>
>
>Best Regards,
>
>Mike Byrne



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