Author: James Long
Date: 14:30:37 09/27/98
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On September 27, 1998 at 14:32:27, Fernando Villegas wrote: > >Why not a program with a kind of device similar to that to decide where the >action is and then use the necessary modules for the rest of the job? By >example, if the position calls for tactics, then he would uses only the >algorithms oriented to tactics, maybe with full width searching, etc. But then >if an strategic approach is necessary in the queen side, he drops the tactic >part of the engine and concentrates all his speed in evaluating strategic >parameters such as pwan races, etc. >Of course some mix should be made: maybe after strategic consideration a quick >look for eventual tactics would be ever necessary to avoid mishaps. But I do not >want to enter in details about this because i suspect that this has already >invented or rejected. Could a programmer tell me about this? Did I pick a good >idea or just I picked an unfeasible one? >fernando I think that's what's called "Shannon Type B." These types of programs selectively search only a few moves. I think most programs prune to a certain degree, but any way you look at it you're taking a huge risk. For example, how do you *know* a strategic approach is necessary without looking for tactical blunders? I just don't see any way around doing a tactical search (as you pointed out). You can (semi) safely omit large portions of the positional factors of an evaluation, however. Isn't CSTal a selective searcher? I'd like to hear more about this engine if anybody has some info. -- James
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