Author: Paul
Date: 06:52:50 10/02/01
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On October 02, 2001 at 08:41:20, leonid wrote: >[D]kq4BK/pq4QQ/2qq1P2/1NnqBnN1/3PpP2/2P2r2/RQ4qr/RQ4bb w - - > >I have said that this position is for "Champions" only having in mind that some >people will try to solve it by brute force. Brute force is the only way to know >minimal nomber of moves that lead to mate. But it could be not all the time >easy. When I tried this position on two professional program, I was impressed. >On Celeron 600Mhz, and with 1M of hash, one expected to solve position in around >4000 years. Other, with no hash, after around 11000000000 years of thinking >expected to recognize shortest mate. > >Please indicate your result. > >Thanks, >Leonid. Hi Leonid, I just now started to look at both your positions, the simple one from yesterday and this one, and I think you have a bit of a twisted nomenclature! This one is the simple one, the other one is more difficult. Even if this one seems to be a mate in 12, and the other in 9. But maybe that's only the case for Pretz, I'm curious about LLchess. For this one I find a mate in 12 in 3 seconds by applying some gentle force: 00:03 WM12 12 Rxa7+ Q8xa7 Rxa7+ Kb8 Rxb7+ Nxb7 Qf8+ Qc8 Qxc8+ Kxc8 Nxd6+ Nfxd6 Be6+ Kd8 Qb6+ Ke8 Bd7+ Kf8 Bxd6+ Nxd6 Qb8+ Nc8 Qxc8# With colors switched it's a mate in 2 ... ;) Groetjes, Paul
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