Author: Antonio Dieguez
Date: 09:12:50 11/13/01
Go up one level in this thread
some hundreds of millions of nodes and about half an hour on pIII 800 to fail high seriously on f6. Is it too much time? :) setboard 8/4kp2/4p3/p2pP2n/Pp2nPp1/1P2P1P1/2K1N3/4B3 b - - analyze 2 15 000 270 f7f6 e5f6 3 18 000 815 h5g7 e2d4 g7f5 4 18 000 2075 h5g7 e2d4 g7f5 d4f5 5 12 000 6957 h5g7 e2d4 g7f5 d4f5 e6f5 c2d3 6 19 000 20498 h5g7 e2d4 g7f5 d4f5 e6f5 c2d3 e7e6 7 17 100 86647 f7f6 e5f6 e7f6 c2d3 h5g7 e2d4 g7f5 d4c6 8 26 100 223146 f7f6 e5f6 e7f6 c2d3 h5g7 e2d4 g7f5 d4f5 e6f5 9 31 400 722773 e7f8 c2d3 f8g7 d3d4 g7g6 d4d3 h5g7 e2d4 g7f5 10 28 1000 1937484 f7f6 11 37 3300 6735171 e7f8 c2d3 f8g7 d3d4 g7g6 d4d3 h5g7 e2d4 g7f5 12 37 7800 15812481 e7f8 c2d3 f8g7 d3c2 g7g6 c2d1 h5g7 e2d4 g7f5 d4f5 13 37 17100 36037559 e7f8 c2d3 f8g7 d3c2 g7g6 c2d1 g6h6 d1c2 14 46 46000 101238382 e7f8 c2d3 f8g7 d3c2 g7g6 c2d1 e4c5 e2d4 h5g7 15 102 234700 544396108 f7f6 e5f6 e7f6 c2d3 h5g7 e2d4 g7f5 d4c6 e4c5 d3c2 >This occurred in a testgame, Yace vs. Arasan: > >[D] 8/4kp2/4p3/p2pP2n/Pp2nPp1/1P2P1P1/2K1N3/4B3 b - - > >Yace played f6! and won. The current released version of Arasan (5.4) takes a >long time to find this. My latest development build takes about 25 seconds on an >Athlon 1.3GHz. Crafty 18.10, however, selects it instantly and sticks to it. > >I haven't had time to analyze this yet. Is there some obvious piece of knowledge >that makes the solution easy for some programs, hard for others? > >--Jon
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