Author: William Kerr
Date: 09:02:59 03/28/03
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On March 28, 2003 at 09:24:50, Pierre Bourget wrote: >On March 27, 2003 at 21:12:39, William Kerr wrote: > >>[D]8/3p1p2/5Ppp/K2R2bk/4pPrr/6Pp/4B2P/3N4 w - - bm Nc3;id #1097 mate in 4 >>very-very tough; >> >> >>Very tough mate in 4 for some engines. >> >>This position may have been posted before. >> >> >>Morphy run on a Great Game Machine 6502 at 2 Mhz >>Pocket Fritz 1.0 on a Cassiopeia E125 MIPS @ 150 Mhz >>All others run on a PC - PII 300, 256Mbytes Ram. >> >>The small m seen below stands for mate. >> >>cm9k 6:14 m11, 8:51 m6, 9:59 m4 >>fritz532 3:21 m8 Nc3 >>crafty no solve in 8 Min >>pocket genius 3 min no solve >>pocket fritz < 44 sec >>pocket grandmaster 6 min Ne3 +12.26 12/51 >>yace < 7 min m11, 26:30 m4 >>extreme 2:54 m6 16/34 >>ruffian10 no solve 6 min >>Ruffian 101 > 6 min < 10 Min mate found >>doctor3 15 sec m4 >>bringer 15 min no solve >>sargon4 5 sec m4 >>rebel10 17 sec m6, 37 sec m4 >>lg2kv2.7 10 min no solve >>uscf 5 sec >>wkchess 33 sec >>morphy 5:27 >> >>Enjoy >> >>Bill > >What is the source and author please . > >Pierre Hi Pierre Its from Chess Life & Review Nov 1979 Benko's Bafflers # 1097 A. French, Mn Bill
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