Author: leonid
Date: 14:34:07 02/14/00
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On February 14, 2000 at 05:08:22, Andreas Stabel wrote: >On February 13, 2000 at 18:02:20, James T. Walker wrote: > >>On February 12, 2000 at 10:18:44, leonid wrote: >> > >> >>This is from George Koltanowski's book "TV Chess". It is a mate in 10 with 4 >>underpromotions to a Knight. It is one of my favorites. I was surprised to >>find in the late 80's that the Fidelity Champion Sensory Challenger would solve >>this problem in about 42 seconds. Todays programs will solve this in less than >>1 second. >> >>[D]7K/P1p1p1p1/2P1P1Pk/6pP/3p2P1/1P6/3P4/8 w - - 0 1 >> >>Jim Walker > >This is a nice variation on the same position the I made from another >variation on this position :) >Note the nice queen moves at the end, and that promoting to a knight the >third time will not work. > >[D]8/1p1p1p1p/3P1P2/pp5P/kp6/1p4P1/1P4P1/2K5 w - - 0 1 > >Regards >Andreas Stabel This last one probably very tough since I could not find any mate from white or black side 13 moves (26 plies) deep. AMD 400Mhz. LLchess. White 13 moves - No mate found. Time - 0.1 sec. Black 13 moves - No mate found. Time - somewhere below 0.05sec. On screen - 0. Regards, Leonid.
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