Author: Mike Hood
Date: 12:16:59 12/03/02
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On December 02, 2002 at 18:01:00, Bob Durrett wrote: > >Fritz will display second best, third best, etc. moves and give a line for each. > But the Fritz manual says doing so requires extra computation when compared to >calculating only one move and displaying a line for it. > >I do not know what other chess-playing programs have to offer insofar as display >of alternate moves with there lines is concerned. > >A few questions: > >(1) If other programs offer this same feature, how do these chess engines >produce the alternate moves and lines? Differently from the way the first move >and it's line is produced? > >(2) If a chess-playing program were optimized to display multiple lines, would >the search algorithms and position evaluation code be any different from those >of a chess engine optimized for one move [and it's line] only? > >(3) If an engine is not optimized for this application, how much will the engine >performance be handicapped if it is forced to display alternate moves and their >lines? > >There may not be any simple answers to these questions? : ( > >My motive for asking these questions is obtain preliminary information which I >might use for an idea, having to do with trees of "best move sequences," I would >like to think more about. > >Bob D. Bob, this isn't what you were asking, but for your information: I've frequently found that Fritz (versions 6 and 7) can find the solution to problems when analysing several lines simultaneously that he misses when only analysing one line at once. Forcing Fritz to spend time looking at alternatives might penalise the main line, but it can be advantageous in special situations.
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