Author: Dan Andersson
Date: 11:04:29 07/20/99
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A random function that inserts extensions on certain moves without any chess or depth related information and still have a maximum, the function could quite possibly be dependant on its previous states. For example, a no brainer: q is a random variable [0..1], q<r P(r)=1 else P=0.5 where depth=depth+P(0.5) up to maxply in an alpha beta search. The search will have the insurance level of maxply, a mean level of 1.5 maxply and a maximum level of 2 maxply. The thing is that varying the random function will get you some interesting properties, sometimes a smoother transition between iterations or moves (especially if you save hashtable), other times times tactical deathstrokes even against faster-deeper searchers (that often in conjunction with risky use of insurance level, i.e. assuming a mean-depth search or some such) but most often the function chosen will just slow down the search and kill seach dead. Regards Dan
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