Author: Jonas Cohonas
Date: 13:24:22 10/26/01
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On October 26, 2001 at 13:15:39, Ed Schröder wrote: >On October 26, 2001 at 08:21:04, Uri Blass wrote: > >>[D]8/5P2/4K2k/8/1P2p2p/p7/6R1/5r2 b - - 0 55 bm h3 >> >>Fritz7 played 56...e3 and lost against Shredder5.32 when 56...h3 is enough for a >>draw. >> >>I believe that Fritz7 lost because it overevaluated passed pawns and evaluated >>it's passed pawns as more than the white rook. >> >>Deep Fritz also needs some minutes to fail low on 56...e3 and I am interested to >>know if Deep Fritz is faster or slower than Fritz7 in finding 56...h3 >> >>Deep Fritz(PIII850,64 mbytes hash with all the 4 piece tablebases and part of >>the 5 piece tablebases including KR vs KPP) needs depth 19 and 7 minutes and 20 >>seconds to fail low on 56...e3 >> >>It solves the fail low after 9 minutes and 38 seconds with score of 3.81 for >>white and after 16:28 it changes it's mind to Rf4(probably another losing move). >> >>I may try bigger hash because big hash tables may be important in endgames but I >>doubt if it is going to help here. >> >>There are other programs that need 0 seconds to find 56...h3. >> >>Uri > > >That's all very weird, I see 2 things you can do to trace the bug: > >a) turn off null-move > >b) turn off table bases > >It must be a bug, e3 is a blunder, h3 is an easy draw. > >Ed All ten game were without TB's and DF without TB access has trouble finding h3 too. Regards Jonas
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