Author: Bob Durrett
Date: 07:05:03 01/09/04
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On January 09, 2004 at 08:53:24, Mike S. wrote: >On January 08, 2004 at 19:07:23, Bob Durrett wrote: > >>Your observations seem to suggest, perhaps astutely, that the best design for an >>anti-human engine may be significantly different from the optimal design for >>play against other computers. Agree? > >Yes and no :-) I think there are good arguments for both extremes: > >1. Even more tactical, because that's the biggest strength of programs compared >to humans (and very deep calculation might replace some sophisticated positinal >evaluations), or > >2. Less tactical (because they can easily be much better than humans anyway), >and with every possible improvement of the traditional program weaknesses >positional play (and/or even strategical decisions). > >As very simplified (and therefore not quite correct, but illustrative) examples >we could say, that Fritz has been more the type (1) approach, and Shredder more >type (2). > >Actually Fritz was moving towards type (2) in recent version history though. >After the X3D match, Frans Morsch said Fritz will now be entirely developed >further considering human opposition (only). > >Hiarcs is somewhat difficult to categorize between (1) and (2), because it >always had a good "positional reputation", but was among the fastest combinators >at the same time (at least since version 6). > >Maybe the "most type (1)" engine currently is Junior. > >In practise, I think most engines are a 1/2 mixture. Both a quick search and a >good evaluation will obviously also be good against other engines too, not only >against humans. Maybe the optimal anti-human and anti-computer designes would be >much less different than we assume. > >Regards, >M.Scheidl Actually, I was keying on your "deep search and effective extensions." It occurred to me that maybe the searching, pruning, and all the other wonderful tricks [futility pruning, lazy evaluation, etc.] discussed here at CCC may need to be revisited. Maybe some of these are better for engine vs engine and others better for play against human opponents. Personally, I do not know the answers to all this since it's "above my pay grade." : ) Bob D.
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