Author: Dann Corbit
Date: 14:11:17 05/15/00
Go up one level in this thread
On May 14, 2000 at 17:02:53, Gian-Carlo Pascutto wrote:
>>Which brings up a point...
>>I have seen some chess engines do something silly. The have finished a ply
>>(say, for instance, ply 14 side to move) and do a fail high. Then *instead* of
>>choosing the move that failed high, they stick with the one that was
>>completed!!! {in this case, the engine might still play axb5 -- though I doubt
>>that Amy has this fault}.
>>
>>Why would anyone want to do that? It does not make any sense to me.
>
>My program Sjeng being one of those, I can give at least two explanations:
>
>a) It's a misfeature which I am/was too lazy to fix.
>
>b) Because of the goofed up search the program will sometimes discover something
>new on the next ply and start failing high on a LOT of moves. If I can't
>complete the search in time, I rather trust the last ply's result than
>one of the new psuedo-good moves.
I think this would make a very interesting heuristic study.
Find out for fail high what the probability is that you should choose that move
instead of the completed one.
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