Author: José de Jesús García Ruvalcaba
Date: 14:42:56 08/10/00
Go up one level in this thread
On August 10, 2000 at 17:23:32, Tim Foden wrote: >On August 10, 2000 at 16:17:47, Christoph Fieberg wrote: > >>Unbelievable, but true: >>I composed a position which is mate in 1 and can easily found, but Fritz6 on >>Pentium III, 500 Mhz and 32 MB Hash needs more than 1 hour to show it (excatly >>1:03:17)!!! >>How do other computers react? >> >>The position is >>FEN: [D]8/8/pppppppK/NBBR1NRp/nbbrqnrP/PPPPPPPk/8/Q7 w - - 0 1 > >Green Light takes just over 29 seconds on my K6/2 333Mhz: > >------------------ > fen 8/8/pppppppK/NBBR1NRp/nbbrqnrP/PPPPPPPk/8/Q7 w - - 0 1 > Game finished test: 0 > time limit 178.00 > Game stage: Opening > Current eval: -0.21 > Ply CE Time Nodes Principal variation > 1 ++ 23 18913 Nxc6 (a=-0.71 b=0.29 e=0.29) > 1 35 107 94418 Nxc6 > 1 245 221 194150 Nxc4 > 1 431 249 225981 Nxd4 > 1 488 250 227290 Rxd4 > 1 521 1771 1641120 fxe4 > 1 719 2891 2779247 dxe4 > 1 32099 2907 2795807 Qh1# > 1 32099 2908 2795811 Qh1# > Max eval diff 1 2.39, 2 0.98 > local: t=29.08 nps=96135.4 n=2795811 (f=3 q=2795808) > total: t=7:30 nps=110487.0 n=49749871 > extensions: check=2 recapture=0 pawn push=0 1-reply=0 > q-moves: generated=9774356 considered=5271969 made/unmade=2795759 > !Qa1-h1 32099 >move Qa1-h1 >-------------------- > >The major reason for the time usage is the quiescence search, which it the bit >that searches until all potential capture gains have been found. > >If you look carfully... GLC has only searched full alpha-beta 3 nodes!! >But it searched 2,795,808 quiecence nodes. > >Cheers, Tim. Is Green Light your program? It shows six different PV's I wonder how it considered only three nodes in full. José.
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