Author: Uri Blass
Date: 12:47:56 01/08/03
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On January 08, 2003 at 15:40:21, Rajen Gupta wrote: >On January 08, 2003 at 15:18:18, Roger D Davis wrote: > >>We occasionally see posts where engines take turns playing the Nunn positions, >>the idea being to give the engines an equal footing, but with some development. >>But has anyone looked at whether white or black wins more often for each Nunn >>position? Presumably, if white wins some 55% of the time for all openings (or >>whatever the figure it, consult your database), then the same should hold true >>for the Nunn positions: Given equal engines, white should win 55% of the time. >> >>Some large inequality between white or black would indicate that a particular >>position ought to be deleted from the set, or some other position substituted. >> >>Roger > >i see the point that you are trying to make ie that there maybe some positions >that are not strictly neutral to begin with; however each engine gets an equal >bite at the cherry so to speak and even if a particular position were to >inherently favour one colour, both engines get to play that colour and the final >result depends upon which engine can win more often; so i guess the nunn >positions are a pretty good test for evaluating engines; however the valid >argument is that programmers can tune their engines to perfom well on these >tests; In theory they can do it but I doubt if they practically do it when 99% of the tournaments are not done from the nunn positions. Uri
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