Author: Uri Blass
Date: 03:01:09 11/10/03
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On November 10, 2003 at 05:58:35, Uri Blass wrote: >On November 10, 2003 at 05:24:08, Daniel Shawul wrote: > >>If I am following you correctly,you do the futility cut off before making the >>move.How do you intend to figure out whether it is a cheking move or not? >>Because I think it is very hard to determine revealed checks(indirect checks >>by pieces other than the moving piece).Doing the futility before making the move >>may cost you some time.So what I think is easy is to make the move and see if it >>is a checking move.And if you apply the futility after you make the move,there >>is no saving in make/unmake.So what I am saying is FP at frontier is >>gonna cost you more than its advantage so it's better to rely on the stand pat >>cutoff. >> >>Daniel > >I have some pruning based on evaluation. >part of it is done before making move and part of it is done after making move. I can add that my pruning is not done only when the remaining depth is 1 and in a lot of cases finding that there is no indirect check is easy only based on the fact that the from square is not in queen direction to the enemy king. Uri
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