Author: Harald Faber
Date: 07:17:26 03/27/00
Go up one level in this thread
On March 27, 2000 at 09:53:57, Ed Schröder wrote: >On March 27, 2000 at 09:06:01, Robert Hyatt wrote: > >>On March 25, 2000 at 23:13:49, Tina Long wrote: >> >>>On March 25, 2000 at 14:28:13, James Robertson wrote: >>> >>>>On March 25, 2000 at 13:41:28, Roger wrote: >>>> >>>>>Would tablebases for Tiger have changed this result at all? >>>>> >>>>>Roger >>>> >>>>Maybe a quarter of a point.... My experience with tablebases is that if the >>>>program is moderately smart it doesn't benefit tremendously from them. >>>> >>>>James >>>> >>>Ed Schroder said about 6 months ago that Tablebases were worth about 10 points >>>on the SSDF scale. >>> >>>I'm 70% sure he said that! I'm 100% sure that Ed said once that something was >>>worth very little rating points. >>> >>>I'm glad I could add some real detail to this discussion. >>> >>>Tina Long >> >> >>Ed is wrong there. it is _amazing_ how many comp vs comp games end up in >>krp vs kr, with the side without tablebases losing most of those. There are >>other endings too (KQP vs KQ, see for example crafty vs nimzo in the ICCT >>tournament last month). >> >>The wrong way to test this is to play A with, vs A without. the right way to >>test this is A without vs B without, then A with vs B without. But A ought to >>be reasonably close to B without tablebases... > >Tablebases have a great future no doubt. But what is available at the >moment (4-5 pieces) its value for Rebel is not more than 5-10 elo I >would say because: > >a) most cases are simply covered by chess knowlegde; > >b) the loss of speed during search because of all the >disc access. > >So I don't think I am wrong when the subject is Rebel. > >Things might change dramatically when for instance the complete >6 pieces become available. +100 elo easily for chess programs. > >Ed Look at Shredder, it often has TB access even with 10-11 pieces on the board, and you cannot deny that this hurts Shredder nor deny that Shredder is very successful with this technique.
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