Author: Heiner Marxen
Date: 08:48:26 01/04/02
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On January 04, 2002 at 11:37:27, José Antônio Fabiano Mendes wrote: > [D]kr6/2K5/p7/P7/6PQ/8/8/8 w > *** Mate in 9 *** > Here are two, one beginning with 1.Qh1+ and another beginning with 1.g5. > 1.Qh1+ Ka7 2.Qh2 Rb7+ 3.Kc8 Rb3 > 4.Qc7+ Ka8 5.Qc6+ Ka7 6.Qc5+ Ka8 > 7.Qd5+ Ka7 8.Qxb3 Ka8 9.Qb8# > > 1.g5 Rb7+ 2.Kc6 Rb5 3.g6 Rb8 4.g7 Rc8+ > 5.Kb6 Rb8+ 6.Kxa6 Rc8 7.Qe4+ Rc6+ > 8.Qxc6+ Kb8 9.Qb7# > > Unfortunately I don't know the author. JAFM According to Chest these 2 are the only solutions: PV: Qh1+ Ka7 Qh2 Rb7+ Kc8 Rb3 Qh7+ Ka8 Qe4+ Ka7 Qd4+ Ka8 Qd5+ Ka7 Qxb3 Ka8 Qb8# PV: g5 Rb7+ Kc6 Rb8 g6 Ka7 Qd4+ Ka8 g7 Rc8+ Kb6 Rb8+ Kxa6 Rb6+ axb6 Kb8 g8=Q# (9.96 secs on an Athlon XP 1500+) Cheers, Heiner
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