Author: Uri Blass
Date: 00:34:26 06/09/02
Go up one level in this thread
On June 09, 2002 at 00:28:44, Peter Kappler wrote: >On June 08, 2002 at 23:47:41, Will Singleton wrote: > >>[D]4Q3/1q3ppk/2Nb4/1p4pb/2n5/2P4P/1P3PP1/R5K1 b - - >> >>Amateur 2 plays Qc7 at 70 sec. The first amateur program who can beat this >>time, or find a better move, gets a copy of Hsu's new book, when available. >>Must be submitted by the author. >> > >Grok switches from Nxb2 to Bc5 after 50 seconds, and starts returning a >drawscore at ply 10. Don't know if Bc5 is better than Qc7... > > 5 13 1.562s 152296 98knps Nxb2 g4 Bg6 Ra8 Kh6 Qh8+ Bh7 > 5 13 1.572s 153126 97knps Nxb2 g4 Bg6 Ra8 Kh6 Qh8+ Bh7 > 6 13 1.743s 190077 109knps Nxb2 g4 Bg6 Ra8 Kh6 Qh8+ <h1> > 6 13 2.814s 419714 149knps Nxb2 g4 Bg6 Ra8 Kh6 Qh8+ <h1> > 7 5 5.017s 956621 191knps Nxb2 Ra8 g4 Ra7 Qb6 hxg4 Nd3 > 7 5 7.932s 1629265 205knps Nxb2 Ra8 g4 Ra7 Qb6 hxg4 Nd3 > 8 11 10.585s 2267711 214knps Nxb2 Ra8 g4 Ra7 Qb6 hxg4 Bg6 Qd7 > 8 11 14.411s 3262810 226knps Nxb2 Ra8 g4 Ra7 Qb6 hxg4 Bg6 Qd7 > 9 -1 50.322s 13361462 266knps Bc5 Ra8 Qc7 Qh8+ Kg6 Rg8 f5 b4 Bd6 Rc8 > 9 -1 80.095s 20862554 260knps Bc5 Ra8 Qc7 Qh8+ Kg6 Rg8 f5 b4 Bd6 Rc8 > 10 0 119.101s 32176831 270knps Bc5 Ra8 Qc7 Qh8+ Kg6 Rg8 Bxf2+ Kxf2 >Qf4+ Kg1 Qc1+ Kh2 Qf4+ <h2> > >Hardware: AMD 1.4 GHz > >-Peter I only know that Grok did not find it for a tactical reason. The latest movei needs some minutes on p800 to see that Nb2 is bad(losing 2.2 pawns). It believed that Nb2 gives black a small advantage at smaller depth. It failed high at Bc5 at that depth and did not solve the fail high at the moment of posting. Uri
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