Author: Peter McKenzie
Date: 02:43:57 06/10/02
Go up one level in this thread
On June 10, 2002 at 03:20:45, Uri Blass wrote: >On June 09, 2002 at 18:01:47, Peter Kappler wrote: > >>On June 09, 2002 at 03:34:26, Uri Blass wrote: >> >>>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. >>> >> >>All I know is that Grok failed low while searching Nxb2 at depth 9. I don't >>know how you can be so certain that it didn't see a tactical problem with the >>move. >> >>-Peter > >I thought based on the scores that it did not see a tactical problem with that >move but now when I check it again I seee that Grok has no score at depth 9 for >Nxb2 so it simply hides information from me in it's pvs. > >Grok is not one of the top programs and it is weaker than movei so I suspect >that if movei need some minutes to fail low for tactical reasons then it means >that Grok need more time. Grok weeker than movei? Based on what evidence exactly? I suspect the opposite is true. > >Depth 9 also does not seem correct for the big fail low unless Grok does a lot >of extensions. > >Uri
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