Author: Matthew White
Date: 12:53:01 10/20/03
Go up one level in this thread
On October 20, 2003 at 15:39:44, Darren Rushton wrote: >[D]2r1r3/pp3nkp/1q1p2p1/3P4/3NNP2/6Pb/PP1Q4/4RR1K w - - 0 25 > >The game turned out to be Botvinnik-Suttles, Belgrade 1969. The tempting 25.f5? >is a mistake, in view of 25...Re4! In the game there followed 25.Rf3? Rc4 >26.Rd3, and now instead of 26...Qb4?! 27.b3 Qd2 28.Rd2 Qc7 29.Rde2 Black could >have equalized completely with 26...Bf5! 27.Nf5+ gf5 28.Rb3 Qc7. But White >missed a winning line (pointed out by Tringov): > >25.b3!! Bf1 26.Qb2 Kf8 27.Ne6+ Re6 28.de6...Botwinnik himself [wrote]...'my old >"illness" - weak combinational vision - was to blame'. > >How many programs find b3!! Patzer 3.61 with 2 threads and a 256 MB Hashtable on a 2x2.4 Ghz Xeon finds it, though it doesn't yet see the line as winning for white. Patzer_361 UCI 146 MB: D1- 00:00 -3.00 Ne4xd6 D1+ 00:00 -0.25 Rf1g1 D2- 00:00 -0.70 Rf1g1 D2 00:00 -1.00 Rf1g1 h7h6 D3- 00:00 -1.37 Rf1g1 Rc8c4 D3 00:00 -1.20 Rf1f3 Rc8c4 Rf3d3 D4 00:00 -1.21 Rf1f3 Rc8c4 D4+ 00:00 -0.84 Nd4e6 D5- 00:00 -0.87 Nd4e6 Bh3xe6 D5 00:00 -1.18 Nd4e6 Bh3xe6 d5xe6 Re8xe6 Qd2h2 Kg7f8 D5+ 00:00 -0.81 Rf1f3 D6 00:00 -0.98 Rf1f3 Rc8c4 Nd4e6 Bh3xe6 D7 00:01 -0.73 Rf1f3 Rc8c4 Nd4e6 Bh3xe6 d5xe6 Re8xe6 D7 00:01 -0.67 Rf1g1 Rc8c4 Nd4e6 Bh3xe6 d5xe6 Qb6c6 Qd2g2 D8- 00:02 -1.01 Rf1g1 Rc8c4 D8 00:02 -0.48 Rf1f3 Rc8c4 D9- 00:03 -0.82 Rf1f3 Rc8c4 D9+ 00:14 -0.81 Rf1f3 D10 00:18 -1.03 Rf1f3 Rc8c4 Rf3d3 Bh3f5 b2b3 Bf5xe4 Re1xe4 Re8xe4 b3xc4 Qb6b1 Kh1h2 D10+ 00:36 -0.46 b2b3 D11 01:40 -0.09 b2b3 Bh3xf1 Qd2b2 Kg7f8 Nd4e6 Re8xe6 d5xe6 Qb6b4 e6xf7 Qb4xe1 Qb2h8 Kf8xf7 Qh8xh7 D12 02:37 -0.06 b2b3 Bh3xf1 Qd2b2 Kg7f8
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