Author: Uri Blass
Date: 00:30:06 07/05/01
Go up one level in this thread
On July 04, 2001 at 20:20:41, Bas Hamstra wrote: >On July 04, 2001 at 01:00:38, Uri Blass wrote: > >>On July 03, 2001 at 18:17:36, Bas Hamstra wrote: >> >>>On July 03, 2001 at 17:18:25, Uri Blass wrote: >>> >>>>On July 03, 2001 at 16:59:02, Bas Hamstra wrote: >>>><snipped> >>>>>Personally I have a problem believing it is possible to maintain such a rating >>>>>while searching 4 ply. >>>> >>>>I have no problem to believe that it is possible to maintain such a rating while >>>>searching 4 plies. >>>> >>>>You only need to call the rest of the plies in the name: "extensions". >>>> >>>>Uri >>> >>>That is hardly possible. At first I would say it is impossible to search only 4 >>>4 "quiet" positional moves and still survive. What about a subtil tactic made >>>out of many quitet moves? But then again, Genius does quite an impressive job >>>with only 6 ply positional and a huge tactical search on top of that. Ok, >>>possible in principal, but very difficult. >> >>I guess that you do not have chessmaster6000 >>It shows very small depthes in the first number >>chessmaster6000(ss=10) is even worse and often needs some minutes to get into >>depth 2. >> >>Chessmaster6000 shows 2 numbers. >>I guess that the first number is the brute force and the second number is search >>with null move pruning. >> >>depth 1/11 means 1 ply brute force and 11 plies with null move >>pruning+extensions so the main line is usually more than 11 plies. >> >>If you call search with null move pruning extensions you have no problem to see >>that chessmaster(ss=10) is searching usually less than 4 plies in the middle >>game. >> >>It is only a question of definitions >> >>Uri > >If you call search with nullmove pruning extensions? Except this is nonsense Why nonsense? Is there a rule to say what extensions can include? Suppose someone is using another selective algorithm without null move. Is there a rule when to call it extensions and when to call it depth? , I >think you misinterprete those 1/11 numbers. > >Bas. What is the meaning of them? My guess is that it means: 1)1 ply of brute force and no null move pruning. 2)11 plies of search with null move pruning 3)A lot of extensions so practically chessmaster has no problem to see thins like mate in 18 at depth 1/11. Uri
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