Author: Uri Blass
Date: 21:37:12 04/07/01
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On April 07, 2001 at 22:40:34, Tina Long wrote: >On April 07, 2001 at 20:51:38, Brian Kostick wrote: > >Thanks guys, it's all worth thinking about. > >> >> Now I'm no computer chess coder and I think I learned something. Selective >>Search setting sets the spread between base and deep lines. i.e. in the numbers >>given above: SS6 = 6/12 (diff. 6); SS12 = 1/13 (diff. 12);, SS9 = 4/13 (diff. >>9), ect... Maybe that was completely obvious to some... $0.02 worth, and it >>might not be worth that. Regards, BK > >The following Statements are REASONABLY correct: > >CM8k: Depth 6/12 6ply brute force, 12ply "selective" (SS set at 6). I do not believe in it. I believe that 6/12 in CM6k and probably also in CM8k means the following: 1)first 6 plies brute force without null move pruning. 2)next 6 plies brute force with null move pruning 3)big extensions Chessmaster can see mate in 18 at depthes like 3/13(I use ss=10) and with 13 plies selective it could not see even mate in 8. > >Fritz Hiarcs etc: Depth 12/19 12ply "selective", 19ply deepest "very selective" > ply reached. Yes I agree here > >Junior: Depth 18 Roughly 9ply "selective" probably about 36ply deepest ply > reached. Yes You are also right here. I am not sure if 36 is exactly the right number and I suspect that it is 37 but it is clearly close to 36. Uri
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