Author: Mike Byrne
Date: 19:28:57 11/12/04
Go up one level in this thread
On November 12, 2004 at 22:20:14, Uri Blass wrote: >On November 12, 2004 at 22:04:34, Mike Byrne wrote: > >>sel 0 0 , ext set to 0 >> >>sd=1 >> >>Black(1): new >>White(1): g >> time surplus 0.00 time limit 22.50 (3:30) >> depth time score variation (1) >> 1 0.00 0.16 1. Nf3 >> 1-> 0.01 0.16 1. Nf3 >> time=0.01 cpu=0% mat=0 n=60 fh=100% nps=10K >> ext-> chk=0 cap=0 pp=0 1rep=0 mate=0 >> predicted=0 nodes=60 evals=20 50move=0 >> endgame tablebase-> probes=0 hits=0 >> SMP-> split=0 stop=0 data=0/128 cpu=0.00 elap=0.01 >> >>White(1): Nf3 >> time used: 0.01 >> >>-> why 60 nodes here? >> >>( thought it would be 20) > >I can only guess that maybe the same node is searched again with different >window. > >> >>same settings, sd=2 >> >>Black(1): new >>White(1): sd 2 >>search depth set to 2. >>White(1): g >> time surplus 0.00 time limit 22.50 (3:30) >> depth time score variation (1) >> 1 0.00 0.16 1. Nf3 >> 1-> 0.02 0.16 1. Nf3 >> 2 0.02 -0.14 1. Nf3 Nc6 >> 2-> 0.02 -0.14 1. Nf3 Nc6 >> time=0.02 cpu=0% mat=0 n=119 fh=100% nps=10K >> ext-> chk=0 cap=0 pp=0 1rep=0 mate=0 >> predicted=0 nodes=119 evals=59 50move=0 >> endgame tablebase-> probes=0 hits=0 >> SMP-> split=0 stop=0 data=0/128 cpu=0.00 elap=0.02 >> >>White(1): Nf3 >> time used: 0.02 >>Black(1): >> >>-> why 119 nodes here >> >>I thought it would be 400. > >No reason for 400 >alphabeta with no pruning and extensions means that you save time by not >searching illogical lines and after finding that 1.Nf3 is 0.14 pawns for black >and finding that 1.a3 e5 is 0.20 pawns for black you save time by not searching >1.a3 d5 because 1.a3 is not better for white than 0.2 pawns for black and >finding it's exact score is waste of time. > >Uri thanks ...
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