Author: Joseph Tadeusz
Date: 13:59:33 01/23/06
Go up one level in this thread
On January 23, 2006 at 15:39:04, Dann Corbit wrote: >On January 21, 2006 at 20:13:57, Uri Blass wrote: > >>On January 21, 2006 at 20:09:43, Uri Blass wrote: >> >>>On January 21, 2006 at 17:53:53, David H. McClain wrote: >>> >>>>On January 21, 2006 at 12:45:04, Rolf Tueschen wrote: >>>> >>>>>Please read here and join the debate: >>>>> >>>>>http://www.talkchess.com/forums/2/message.html?203547 >>>> >>>>Rolf, >>>> >>>>It may be everything stated in that post but I am not naive enough to think >>>>Rybka has not been disassembled and reverse engineered by as many professional >>>>and many amatuer authors you can think of, Russian or otherwise. >>>> >>>>There is money at stake. DHM >>> >>>I do not think that there is much money in chess. >>> >>>Everybody that I talk with him tell me that people who can earn money from chess >>>programs can earn a lot more from other things. >>> >>>I also doubt if disassembling rybka is the the best way to get a strong chess >>>program and it is possible that people who are so smart to be able to do it and >>>understand the assembler code of rybka may be also smart enough to generate >>>something better in less time. >>> >>>Uri >> >>I can add that in the past genius dominated for years by a big margin. >> >>people also could disassemble genius at that time and in that time it was >>possible to earn more money from chess programming. >> >>The fact that for years no program came close to genius suggest that >>disassembling and reverse engineering is not so easy. > >I think that for a large system (e.g. 500K exe or bigger) it will be harder to >disassemble and recreate than to write from scratch. > >Disassembled binary instructions will form a huge volume of information. > >A few lines of C can expand into a large volume of assembly. There are tools that translate executables directly into C code. > >The optimizer will do all sorts of crazy things with the code .. writing jump >tables and lifting expressions, etc. All the comments are also boiled out of >the code, along with all meaningful names. > >To me, it would take the fun out of it to do it that way. Why bother?
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