Author: John Merlino
Date: 10:14:06 04/18/02
Go up one level in this thread
On April 18, 2002 at 12:36:39, Roy Eassa wrote: >On April 18, 2002 at 12:18:43, John Merlino wrote: > >>On April 18, 2002 at 12:09:17, Roy Eassa wrote: >> >>>On April 18, 2002 at 09:44:40, Art Basham wrote: >>> >>>>I wonder what program is the first to find >>>>1. Qa8...?! >>>> >>>>[D]3Q4/3p4/P2p4/N2b4/8/4P3/5p1p/5Kbk w - - bm Qa8; id Quick-03; >>> >>> >>>CHEST finds the (one and only) mate in 9 in just a few seconds: >>> >>>3Q4/3p4/P2p4/N2b4/8/4P3/5p1p/5Kbk w - - acn 1306981; acs 5; bm Qa8; ce 32750; dm >>> 9; pv Qa8 Bxa8 Nb7 d5 Nd6 d4 e4 Bc6 a7 Bb5+ Nxb5 d3 e5 d2 a8=Q+ d5 exd6ep#; >> >>Incorrect, there are many Mate in 9 sequences -- see my post for three of them. > > >By "one and only" I mean there is only one FIRST move (the "key") that leads to >mate in 9. (Rarely would you see one and only one variation!) > >In a composed problem, that's what makes it "correct" and not "cooked". Ok. I misunderstood. Amusing little problem -- a queen sacrifice, you can promote to a Bishop, you can capture en passant for checkmate -- fun stuff. jm
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