Author: Robert Hyatt
Date: 15:06:39 07/09/02
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On July 09, 2002 at 17:44:32, Uri Blass wrote: >On July 09, 2002 at 17:37:47, Robert Hyatt wrote: > >>>I agree that you can define null move pruning as extensions of the moves that >>>are not pruned but this is not what they did. >>> >>>Uri >> >> >>How can you make that statement? They extended the moves they thought >>important to extend. Null-move trims the depth on the moves it considers >>to be bad. >> >>They are the _same_... The effect is exactly the same... > >The moves that they extended were not the moves that null move search suggest >that they may be good so the effect is not the same. > >Uri So? You suggest that null-move is correct. I don't believe that at all. Neither did Hsu. Null-move makes mistakes. We just accept them because we like the overall effect. It is _certainly_ possible to extend the right moves and have fewer errors than null move which cuts off moves that appear to be bad when they are not, or allows them to be searched when they should not be.
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