Author: blass uri
Date: 09:27:22 03/12/00
Go up one level in this thread
On March 12, 2000 at 10:09:41, Colin Frayn wrote: >On March 11, 2000 at 15:03:58, John Coffey wrote: > >>I wonder how much benefit there would be to doing a dynamic exchange evaluation >>on certain moves and just eliminating them from the search. Remove moves that >>seem to obviously lose material. We might allow sacrifices at the base of the >>tree and sacrifices that give check at any point. > >If you could just cut out moves which you played then that would be great, but >overlooking good sacrifices that the opponent could make might seriously reduce >your program's strength. Remember that they will mainly be playing other >programs, and other programs won't be so prejudiced against sacrifices as humans >are. I do not think that humans are prejudiced against sacrifices. I had games in the past when I sacrificed my queen because I saw that if my opponent takes the queen he or she is going to lose by checkmate. I had a game like it also when I had only 1700 elo rating. If you prune sacrifices you will miss these moves and you will have big problems not only against computers but also against humans. > >By that I don't mean that humans hate playing sacrifices, just that they are >naturally more prone to discounting them and missing purely tactical lines. A >computer will easily spot a clever checkmate which is initiated by a sacrifice >without any problem at all, whereas a human often has great difficulty in doing >so. I disagree. Strong humans often see good sacrifices. They can do tactical blunders but most of them are not because of missing a sacrifice but because of missing a tactical trick when there is no sacrifices in it. Uri
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