Author: Robert Hyatt
Date: 08:28:38 11/22/04
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On November 22, 2004 at 02:08:30, Thomas Gaksch wrote: >On November 21, 2004 at 18:28:13, Robert Hyatt wrote: > >>On November 20, 2004 at 16:45:39, Thomas Gaksch wrote: >> >>>Hello, >>>Crafty Classic 2004 seems to plays stronger than Crafty 19.17. If you list the >>>extensions there is an new one called "start depth extension". Does anybody know >>>what this extension is doing? Or what is the secret of this stronger version? >>> >>>Thomas >> >> >>That is probably just a "pre-load" on the extensions. IE at ply 1, you can add >>.75 to the depth without changing anything. Except that the first fractional >>extension will now round to over a ply. IE if you start depth at 1.00, a .75 >>extension doesn't do anything, until another .75 extension is added, then the >>extension is 1 ply with that .5 carried over until the next .75 is added. If >>you start at 1.75, the first three .75 extensions actually extend, the 4th does >>not, then the next 3 do, the next doesn't, etc... > >Thank you very much for your answer Robert, >and also thank you for your great program Crafty. I have two short new >questions. >In an older Crafty Version you added a simple approch of the singular extensions >to the code. Why disapperded the code without any comment in the newer Versions? It was never really "in". I played with it off and on for a while, and even gave the code to others to experiment with. But I've not seen anything that really played better, so it has never been a part of a normal released version. I will probably play with it some more in the future as I haven't given up, but it simply hasn't helped overall, yet... >My great hobby are chess engines. My problem is, that I have no much time >((family, work...) to build a chess engine from the scratch. Would you please >allow me to develop an Crafty Clone with an name like TGCrafty and let it play >on an chess server? That would be very generous from you. I know that there are >so much clones and nobody wants to see another clone but it is the only chance >for me to have a kind of "own" chess engine. Naturally I would alway publish >that it is "only" a Crafty clone. > there is no problem doing that. Several others are doing it already... >Thank you for your answer. >Thomas > >Sorry, for my bad English.
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