Author: John Lowe
Date: 15:37:23 12/27/02
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On December 27, 2002 at 18:24:36, Bruce Moreland wrote: >On December 27, 2002 at 17:41:09, John Lowe wrote: > >>I'm going to have to face this soon - I know it's not trivial and my conception, >>as usual, will be simplistic and naive. >> >>A repeat move becomes significant only when it is returned as the players move. >>If it leads to a draw it is in the interest af a side that is losing otherwise >>it is to be avoided. At some stage it must acquire a score of "0". >> >>Does the inclusion of the "repeat move" information in the search itself affect >>the move that will be made in avoiding the repetition? Or is the second best >>move found in the search (assuming not another repeat) either not adequate or >>uncertain? > >If you don't handle repetitions, the humans won't figure this out for a while, >but once they do, watch out. > >And before they figure it out and start exploiting it like crazy, you'll still >draw games where you are a rook up and winning effortlessly. > >Having this stuff in the search allows for some pruning. I don't know if the >amount is significant, but as a side-effect, I'll take it. Detecting reps in >the search has to be significant tactically, since there are so many positions >where perpetual check is an issue. > >I may not have answered your question. > >bruce Hi Bruce, You've certainly made a start - food for thought - I've already had computer programs snatching draws from lost positions and it would be good to keep DIY ahead of my four-year old grandson for a little while :) John
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