Author: Uri Blass
Date: 08:10:34 10/24/01
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On October 24, 2001 at 10:04:01, Vincent Diepeveen wrote: >On October 24, 2001 at 04:44:18, Uri Blass wrote: > >>On October 23, 2001 at 22:22:38, John Merlino wrote: > >[snip] > >>I believe that the default personality is usually not good for test positions >>(espacially when there is a forced mate) and it is better to use bigger >>selectivity. >> >>My experience showed that at least for chessmaster6000 ss=10 is better than ss=6 >>for finding mates. >> >>Uri > >ss=10 means 10 plies of forward pruning. That's complete suicide >in computer-computer games. I believe that ss=10 is about null move pruning and not about forward pruning. I believe that depth 4/14 of chessmaster means first 4 plies without null move pruning,next 10 plies with null move pruning and also a lot of extensions. I know that chessmaster shows 2 numbers as the depth search and in the middle game after enough time I can see 4/10,5/11 with ss=6 when I see 1/11,2/12 with ss=10 I can see that in the endgame the difference between the numbers is smaller and in pawn endgames I may see usually depthes like 8/9 and 9/10 with ss=6 when ss=10 means the depthes are going to be 8/13,9/14. When chessmaster has depthes like 4/10 I always see at least 4 plies in the thinking line(chessmaster6000 can show me the line is consider every 1/2 second). It suugests that chessmaster never check threats after the first ply at this depth. I often see at depth 1/11 only 1 ply in the thinking line and I guess that chessmaster simply check if there is a threat in the first ply. Uri
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