Author: Sune Fischer
Date: 02:07:48 11/13/02
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On November 13, 2002 at 01:10:23, Uri Blass wrote: >The point is that it may be better to use average of only 80% of the time for >the expected move and the rest of the time for other moves when you do not use >the same time for all of the other moves. > >These 80% may be 90% in cases that the move that you predict is played and less >than 80% in cases that the move that you predict is not played. > >Having less risks in trying to predict the opponent's move is also important >and if I have to choose between using 60% of my time for the played move in >every case(option that I do not have) and using 100% of my time for the >predicted move in 60% of the cases I prefer the first option. > >I cannot get the first option but I may get something closer to it. > >Uri I understand your point. I think it would be better to do it like this: You spend 100% on the pridicted move until you start suspecting this wasn't the best move, eg. it fails high. Now you go back and do a shallow search on all the possible moves, not including the move you just tried of course. This shallow search will be more efficient than the threads because it can use alpha-beta all the way. After a 5-6 plies search (or however long you want to spend finding the candidate move) you have a move to ponder and you start pondering that. If the best move is the best only for a very deep reason, and it wasn't already the pridicted move, then you won't be able to find it unless you do a long search like your opponent. So it seems this will always be a ponder miss no matter what. We can't make a perfect scheme anyway, so we must be willing to accept a miss now and then and not go out of our way to fix all the exceptions. You probably wanted to use the information from the threaded moves search to help seeing when the pridicted move was wrong, but I don't see what value lots of 2-4 ply searches have you when the pridicted move isn't failing high? -S.
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