Author: Kurt Utzinger
Date: 13:27:56 01/02/04
Go up one level in this thread
On January 02, 2004 at 15:29:18, Mike Byrne wrote: >On January 02, 2004 at 14:08:07, Kurt Utzinger wrote: > >>What's the difference between these two versions? >>And can already be said which is the stronger one. >>I would like to implement one of them under Arena 1.02 >>GUI as a winboard engine. >>Kurt > >Hi Kurt, > >As the one who "modifies" crafty into Crafty 19.08 SE - it can be said ( for >the first time ), that the standard engine is the same -- , it is just that >Crafty 19.08 SE has 31 other different personalities and levels and added >commands that are found in regular crafty. So if you wish to use the standard >engine, just use "plain" Crafty, if you wish to see how evaluation and seach >different settings impact Crafty, you can use Crafty 19.08 SE and use the >pre-defined settings or make your own. Sort of like what you used to do with >Chessmaster. > >I always find it very hard to tweak any settings that make Crafty play better. >Also what worked in 19.04, may not work as well in 19.08, etc. I have tweaked >the personalities a little bit over time - but not too much. I mainly do it to >increase variety in play, and to enable to use a crafty that is much "dumber" >than standard crafty - even Crafty set at one ply search depth (sd=1), is tough >for some newbie chess players. > >Also, I added a feature that iI call "delay move". When one sets an engine to >say "search depth=3", the hardware is so fast, the engine will typically play >instantaneously. That is not similiar to how when humans/humans play at all in >most non blitz chess games. This feature allows the humaan to set the "sd=3" , >'dm=on" and play a Game/15. Although Crafty will search just 3 ply on every >move, it will use the clock as if it was thinking the entire time. You will >actually have time to ponder your next move while "crafty" is waiting to make >its move. It would have completed its 3 ply search in a few nano seconds and >just wait until the appropriate time the level selected (game/15 etc) is killed >before responding. It self adapting and can be used for any level (time >control). If you have "show thinking on" - you can see the move it will make and >get a headstart on your pondering :>). > >Best, > >Michael > >ps anyone can get on the free e-mail distribution (best way to keep updated), by >e-mailing me with the word "include" in the subject heading. if you are >innterested in the source, email me with the word "source" in the subject >heading. I did receive some new source requests today and they will be e-mailed >later today. In addition, Leo will carry the most current version on his >website, but the fastest and best way to keep current is to be on the mailing >list. In addition , that saves his bandwidth and with 160 current subscribers >that is not insignificant. Removal from the email is list is just as simple - >send me an e-mail with the word "remove". In addition, I delete any addresses >that bounce back as undeliverable - they usually carry the full attachment if I >don;t keep my mailing list current, I could be quickly overwhelmed. > >The executable mailing list is private , everyone is "bcc" and the list not >shared with anyone. The source mailing list is not "bcc" ,i.e., anyone on the >list will see who else is gettting the source. That could be useful if someone >wants to share an idea or catches a bug.
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