Author: Uri Blass
Date: 22:29:09 09/24/01
Go up one level in this thread
On September 24, 2001 at 20:33:21, Slater Wold wrote: >On September 24, 2001 at 19:35:51, Uri Blass wrote: > >>On September 24, 2001 at 19:10:43, Dann Corbit wrote: >> >>>There is no problem with crafty. >>>It's a problem with the counters. >>> >>>The biggest number a long can hold is about 2 billion. >>> >>>That overflows very easily. >>> >>>If you let crafty run for more than a few minutes, the NPS figures have no >>>meaning. You used to be able to get negative values, but I think at least that >>>has been fixed. >> >>Note that based on my experience of long analysis >>Deep Fritz has not the same problem. >> >>Uri > >You're correct: > >W,S - Deep Junior 7 >rnbqk2r/1p3ppp/p7/1NpPp3/QPP1P1n1/P4N2/4KbPP/R1B2B1R b kq - 0 1 > >Analysis by Deep Junior 7: > >1...cxb4 2.Nc7+ Kf8 3.Qxb4+ Kg8 4.Nxa8 > +- (1.99) Depth: 3 00:00:01 >1...Kf8 2.Bg5 > ³ (-0.30) Depth: 3 00:00:01 1kN >1...Kf8 2.Bg5 > ³ (-0.30) Depth: 3 00:00:01 1kN >1...Kf8 2.Bg5 > ³ (-0.30) Depth: 3 00:00:01 1kN >1...0-0 2.h3 cxb4 3.axb4 Bd7 4.hxg4 > ³ (-0.32) Depth: 3 00:00:01 4kN >1...0-0 2.h3 Bd7 3.hxg4 axb5 > ³ (-0.52) Depth: 6 00:00:01 8kN >1...0-0 2.h3 Bg3 3.hxg4 Bxg4 4.Nc3 cxb4 5.axb4 > = (-0.09) Depth: 9 00:00:01 148kN >1...0-0 2.h3 Bg3 3.hxg4 Bxg4 4.Nc3 Nd7 5.Be3 cxb4 > ² (0.48) Depth: 12 00:00:02 2256kN >1...Nc6 2.Bg5 f6 3.dxc6 0-0 4.c7 Qd7 5.Bh4 Bxh4 6.Nxh4 Qc6 7.Nc3 Qxc7 > ² (0.47) Depth: 12 00:00:05 3016kN >1...Nd7 2.Nd6+ Kf8 3.Ng5 Bd4 4.Ndxf7 Qf6 5.Rb1 Bg1 6.Nf3 Nb6 7.Qc2 Kxf7 8.Rxg1 >cxb4 9.c5 Nd7 10.axb4 > = (0.06) Depth: 12 00:00:09 9620kN >1...Nd7 2.Nd6+ Kf8 3.h3 Nb6 4.Qe8+ > = (0.05) Depth: 15 00:00:43 86103kN >1...Nd7 2.Nd6+ Kf8 3.h3 Nb6 4.Qe8+ Qxe8 5.Nxe8 Kxe8 6.hxg4 Bd4 7.Nxd4 cxd4 8.Kf3 >Ke7 9.c5 Nd7 10.Bg5+ Nf6 > ± (0.81) Depth: 18 00:08:19 900744kN >1...0-0 2.h3 Bd4 3.Nbxd4 Nf6 4.Qc2 cxd4 5.Kf2 h6 6.Be2 Nbd7 7.Rf1 > ² (0.43) Depth: 18 00:09:40 900744kN >1...0-0 2.h3 Bd4 3.Nbxd4 Nf6 4.Qc2 cxd4 5.Kf2 a5 6.Bd2 Bd7 7.Be2 axb4 8.axb4 > ² (0.58) Depth: 20 00:31:35 3409915kN > >(W, 24.09.2001) > >3,409,915,000 nodes. And not the correct solution. :( > >(This is Nolot #6.) > > >Slate 3,409,915,000<2^32 The real test is when the number of nodes is bigger than 2^32 Deep Fritz has no problem but I do not know remember other chessbase programs that can report more than 2^32 nodes Uri
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