Author: Roy Eassa
Date: 13:20:40 01/20/02
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On January 20, 2002 at 16:03:16, Heiner Marxen wrote: >On January 19, 2002 at 17:40:05, David Rasmussen wrote: > >>This is from Shredder - Chezzz from the first day of CCT: >> >>[D]3Q4/4q2p/1p1pNk2/3P2p1/6P1/7P/5P2/6K1 w - - 0 50 >> >>The right move is Qh8+. Is there a shorter mate? >> >>00:00:41.44 15Mn 12/30/30 +MAT27 50. Qh8+ Kg6 51. Qg8+ Kf6 >> 52. Qxg5+ Kf7 53. Qg7+ Ke8 >> 54. Qg8+ Kd7 55. Qa8 Qf6 >> 56. Qb7+ Ke8 57. Qc8+ Ke7 >> 58. Qd8+ Kf7 59. Qf8+ >> >>This is probably easy, with all those forced moves... > >Verifying the shortest mate here is not exactly "easy": Chest on an Athlon >1500+ with 128MB hash (and some 4&5 piece EGTBs) needs 3.4 hours to find >that Qh8+ is the unique key for a mate in 11: > >PV: Qh8+ Kg6 h4 gxh4 f4 h3 f5+ Kf7 g5 h2+ Kh1 b5 g6+ hxg6 f6 Qxe6 Qg7+ Ke8 dxe6 >g5 Qg8# > >Cheers, >Heiner Maybe not easy, but Chest has managed to shorten the mate by 3 (i.e., by 21%) and, in doing so, find a new, quiet move on move 2 (2.h4!!).
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