Author: Daniel Shawul
Date: 04:25:08 02/16/05
Go up one level in this thread
On February 16, 2005 at 07:08:08, Daniel Shawul wrote: And it doesn't matter to me how a clone is defined here. We will use that same definition for the other engines too. >On February 15, 2005 at 18:38:43, John Merlino wrote: > >Hello all, >i think this thread is probably about DanChess. >So i will propose this deal. >If you form a group of inspecting people here,I will send my code. >And those people will post their results here, so that this matter is >settled. I would like also to know which things specifically are cloned. > >I will post any open source engine's code as my defense > >daniel > >>I'm not trying to start a brutally long thread here, but I'm just curious about >>how people feel about a particularly touchy subject -- clones. What, in your >>mind, would lead you to the conclusion that an engine is a clone? >> >>Let's forget trying to find ways to PROVE that a clone is a clone; I'm just >>trying to define one. For the sake of argument, assume that the author of this >>engine in question tells you exactly what he did and did not do, and you must >>decide whether to call it a clone or not. >> >>Here are some hypothetical questions to start the debate: >> >>If the author took Crafty and completely rewrote the evaluation code and nothing >>else, would it be a clone? >> >>How about if the author rewrote the evaluation code and search algorithm only, >>but left the hashing code, et. al.? >> >>How about if the author rewrote everything EXCEPT for the evaluation? >> >>How about if the author rewrote everything EXCEPT for Crafty's evaluation of >>passed pawns? >> >>I think you can see where I'm driving. Obviously, many engine authors have >>studied Crafty and other engines whose authors have graciously provided their >>source code. But, for an engine to not be considered a clone, does it have to be >>absolutely 100% the work of the author? (Forget about Nalimov's EGTB probing >>code and any other code that can be used with permission). >> >>Many thanks in advance for your thoughts, >> >>jm (who's just preparing for any eventuality during his upcoming stint as >>moderator :-)
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