Author: Jouni Uski
Date: 00:07:18 09/25/01
Go up one level in this thread
On September 25, 2001 at 01:29:09, Uri Blass wrote: >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 Yes I hope, that in future all engines can handle 64b node counter. Specially annoying is Goliath, which can reach 2^32 quite fast because of extreme NPS! Jouni
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