Author: Uri Blass
Date: 11:33:00 03/26/01
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On March 26, 2001 at 14:14:57, Heiner Marxen wrote: >On March 23, 2001 at 01:54:29, Heinz-Josef Schumacher wrote: > >>The follow study is not soluble for progrms today!? >> >>5nr1/2Pp2pk/3Pp1p1/4P1P1/6P1/5K2/8/7n w - - >> >>http://homepages.compuserve.de/hjsxy/2.gif >> >>M.Judowitsch- Study 1976 >> >>1.c8N!! [1.Kg2? Rh8 2.Kxh1 Kg8+ 3.Kg2 Rh4=). 1...Rh8 2.Ne7 Nf2 3.Kxf2 Rg8 4.Ke3 >>Kh8 5.Kd4 Kh7 6.Kc5 Kh8 7.Kb6 Kh7 8.Kc7 Rh8 9.Kd8 Rg8 10.Ke8 Rh8 11.Kf7 Rg8 >>12.Nxg8 Kh8 13.Kxf8 1-0 > >My program Chest confirms, that after 8...Rh8 there is a mate in 12: > >9.Kd8 Rg8 10.Ke8 Kh8 11.Kf7 Kh7 12.Nxg8 Kh8 13.Ne7 Kh7 14.Kxf8 Kh8 15.Ke8 Kh7 >16.Kxd7 Kh8 17.Kc7 Kh7 18.d7 Kh8 19.d8=Q+ Kh7 20.Qg8# > >When I went back one more move of the intended solution, Chest refutes >8.Kc7 with Kh8 instead of Rh8, with the following line: >8.Kc7 Kh8 9.Kd8? Nh7+!, avoiding the mate with Nxg6. > >Neither I nor Chest have found a solution here, so it may be a refutation >of the study, but I doubt it. Does anyone know better? > >Heiner Yes 9.Kd8 is winning see http://www.icdchess.com/forums/1/message.shtml?159831 The line that I posted is not the same but the position at move 9 of white is the same. Yace can see without learning +1.37 for white in a few minutes for 9.Kd8 Uri
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