Author: José de Jesús García Ruvalcaba
Date: 14:33:34 06/07/99
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On June 07, 1999 at 17:10:29, Jeroen van Dorp wrote: > >>In engine vs engine, if one plays such a match in a dual Pentium processor, then >>it is the same as if using two different computers. Otherwise the result is >>skewed. >>Laurence > >Can you explain me why on the same machine results are 'wrong'? Does a one >machine engine-engine game favour one engine above another? If yes, why? > >Thx. > >Jeroen ;-} To measure strength, test games should be played. Playing two engines in one machine requires turning «thinking in opponent's time» off, as otherwise it is (almost) imposible to share the resources fairly. Time management policy (i.e. how much time is allocated for each move, when to take longer, and when to move quickly) is crucial for a chess playing engine. This policy can make the program stronger or weaker. «Thinking in opponent's time» is very relevant to time management policy, as good guesses actually give the engine more reflection time. And that is why playing two engines on the same machine can affect the results. José.
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