Author: George Tsavdaris
Date: 06:49:41 04/25/04
Go up one level in this thread
On April 25, 2004 at 09:07:31, Sandro Necchi wrote: >On April 25, 2004 at 09:03:38, Helmut Conrady wrote: > >>On April 25, 2004 at 07:56:15, Sandro Necchi wrote: >> >>>On April 25, 2004 at 07:55:09, Jorge Pichard wrote: >>> >>>>On April 25, 2004 at 06:53:39, Eduard Nemeth wrote: >>>> >>>>>On April 25, 2004 at 06:47:21, Eduard Nemeth wrote: >>>>> >>>>>No Jorge, see here: >>>>> >>>>> >>>>>Ruffian 2.1.0 - Shredder, real position: >>>>> >>>>> >>>>>[D]6Q1/8/p7/7p/8/5q2/5k2/2K5 w - - 0 1 >>>>> >>>>>Is this won with 6-Pieces? I believe no >>>>>then the pawn on a6 is not possible in the endgame >>>>> >>>>>(Ruffian 2.1.0 has not 6 pieces, but Shredder have it). >>>>> >>>>>Position without pawn a5: >>>>> >>>>>[D]6Q1/8/8/7p/8/5q2/5k2/2K5 w - - 0 63 >>>>> >>>>> >>>>>Draw: >>>>> >>>>>1. = (0.00): 63.Dd8 >>>>>2. -+ (-#76): 63.Da2+ >>>>> >>>>>But Ruffian (without 6-Pieces) plays Qa2+? and lost. :( >>>>> >>>>>Here won also not the engine, it won the better EGTB, or? :) >>>> >>>>But the engine has to reach that position before it can use the EGTB, therefore, >>>>the game was won after reaching that position with or without 6-Pieces EGTB. >>>> >>>>Jorge >>> >>>Correct! >>> >>>Sandro >> >>Eduard is right IMO. In a tablebase-based search the tablebases can help to >>reach a won position, which the engine may be couldn`t find alone. >> >>I would argue in an other way: every programmar is free to use as much >>tablebases as he wants ... >> >> >>Helmut > >I agree with Eduard, but in this specific position the program is able to see >the win also without 6 EGTB. I don't find it unfair if a program can play +420 ELO points better with tablebases. The 6-piece tablebases is here and it's available for anyone to use them in his program. If someone don't allow his program to use for example an opening book, then it's not reasonable to say that the game with another program which used a book is unfair. >I know it because I do not have them and I saw the program evaluation on one of >my computers. >
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