Author: Lieven Clarisse
Date: 10:36:45 01/02/03
Go up one level in this thread
On January 02, 2003 at 13:27:16, Art Basham wrote: >Thanks, but i am not sure if any program can find it.. >i remember that the solution was rather difficult... > >I was just wondering how long it would take a program to find.. >1. QxN+...etc. > > >++++++++++++++ > >On January 02, 2003 at 13:02:08, Drexel,Michael wrote: > >>On January 02, 2003 at 12:47:12, Art Basham wrote: >> >>>White mates if ....black plays KxQ... >>> >>>[D]1r4r1/3q1npk/2b1pbnp/Rp1p4/1N1P3P/2PQ1pP1/1K3B2/5B1R w - - 0 1 >>> >>>I do not remember the solution, but the white rook at a5 >>>is brought back to a1 to mate the black King in about 8 or 9 moves..etc. >>>I lost the solution..sorry...:-) >>>Art >> >>are you searching for this? >>1. Qxg6+ Kxg6 2. Bd3+ Kh5 3. g4+ Kxg4 4. Rg1+ Kh3 5. Bf1+ Kh2 6. Bg3+ Kxg1 7. >>Ra1 :-) >>it takes me about one minute with a little help of my friend Fritz. >>I guess no program is able to find that. am I wrong? Ruffian on my slow PIII 450 (100MB hash) depth=13 1/44(Qxg6+) +0.91 Qxg6+ Kxg6 Bd3+ Kh5 g4+ Kxg4 Rg1+ Kh3 Bf1+ Kh2 Bg3+ Kxg1 Ra1 Ra8 Rb1 Ra1 Kxa1 Qa7+ Na2 Qxa2+ Kxa2 Ra8+ Kb2 Ra2+ Kxa2 Bg5 Bh3+ Bc1 Rxc1# Nodes: 48700210 NPS: 223764 Time: 00:03:37.64 --> but not proved the mate yet, (score 0.91) --> a minute later!! depth=14 1/44(Qxg6+) +327.38 Qxg6+ Kxg6 Bd3+ Kh5 g4+ Kxg4 Rg1+ Kh3 Bf1+ Kh2 Bg3+ Kxg1 Ra1 Ra8 Rb1 Ra1 Kxa1 Qa7+ Na2 Qxa2+ Kxa2 Ra8+ Kb2 Ra1 Rxa1 f2 Bh3+ f1=Q Rxf1# Nodes: 78086987 NPS: 241830 Time: 00:05:22.90 very very impressive.
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