Author: Thomas Gaksch
Date: 23:08:30 11/21/04
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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? 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. Thank you for your answer. Thomas Sorry, for my bad English.
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