Author: Mike Byrne
Date: 21:04:28 12/01/03
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On December 01, 2003 at 23:33:47, Uri Blass wrote: >On December 01, 2003 at 22:47:42, Mike Byrne wrote: > >>On December 01, 2003 at 13:01:21, Dann Corbit wrote: >> >>>I sent a letter to David Levy >> >>The versions that are publicly avalailable 4.60, 4.61 and 5.04 do not share any >>digital sequence with Crafty's executable and they do play anything like Crafty. >> I seriously doubt those programs have any Crafty code at all. Contrast that >>with Ruffian , which does show some digital sequencing that matches with Crafty. >> But we're talking perhaps a few lines out of 40,000 lines of code. What I call >>digital sequencing is to to run the the program, Microsoft Windiff and compare >>the two executables. Normally Windiff is used on source code, but you also use >>to match executables. For example , there is really very little difference >>betweeb Ruffian 1.0.1 and Ruffian 1.0.5. What it does not tell is what exactly >>is it that is matching up or is different. > >Interesting data. > >Does it gives % of digital sequence match? > >I think that some table with all the free and commercial programs and % of >digital sequence match may be interesting and can help to detect clones > >A program that compares every new engine that you get with the previous engines >and add it to the table may be productive. > >Ruffian1.0.1 and Ruffian1.0.5 has almost the same strength and it may be >interesting to know if it also show very little difference between Junior5 and >Junior8 or movei0.07a and movei0.0.7.99 or different Fritz's[so we can know if >Fransh morsh really rewrite the code in every version(it was claimed by somebody >that I do not trust him to know)]. > >Uri No, but visually you can see it as the matches are in white and the differences are in red and yellow. There is no doubt, for example, my modified Crafty is a crafty clone as there are large "white" matches.
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