Author: Heiner Marxen
Date: 13:44:27 03/26/01
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On March 26, 2001 at 14:33:00, Uri Blass wrote: >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 Thanks! I have played it out a bit with crafty, and now I see it also. But it is too deep for chest, at least without EGTBs. Heiner >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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