Author: Heiner Marxen
Date: 04:54:07 10/13/01
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On October 13, 2001 at 06:53:01, Paul wrote: >On October 12, 2001 at 12:50:01, leonid wrote: > >>[D]3n1K2/krbb1P1P/3n1Q1R/1R1r1Q1Q/1R3B1q/1NNQPB1q/7q/qqqqq2q w - - >> >>Please indicate your result. >> >>Thanks, >>Leonid. > >Hi, > >It took Pretz (& me) quite some time to find anything at all: > >15:14 WM11 12 Rxb7+ N8xb7 Qfxd5 Bc6 Qa5+ Qxa5 Qxa5+ Bxa5 Qfd4+ Bb6 Qxb6+ Kb8 >Qxb7+ Bxb7 Rxb7+ Kc8 Qc4+ Nxc4 Rb8+ Kd7 Nc5# > >My 'standard-Leonid-settings' didn't do the trick here, so I had to fiddle >around a bit to get this ... great position. > >Groetjes, >Paul Hello Leonid, Hello Paul, Chest (& me) did not come up with as much: after 7.4 hours on a K7/600 with 350 MB hash Chest mutters "No solution in 9 moves." Here is the timing: # 1 0.00s 0kN 0.87 1- 0 # 2 0.00s 0kN 1.00 1- 0 # 3 0.02s 0kN [ 17.14] 0.94 78- 0 # 4 0.40s [ 20.00] 14kN [ 37.71] 0.98 2163- 0 # 5 4.78s [ 11.95] 176kN [ 12.98] 1.15 26250- 0 # 6 46.01s [ 9.63] 1834kN [ 10.40] 1.37 251710- 0 # 7 385.66s [ 8.38] 15395kN [ 8.40] 1.76 2171527- 92 # 8 3094.26s [ 8.02] 121911kN [ 7.92] 2.20 16929195- 8186873 # 9 26545.93s [ 8.58] 1016749kN [ 8.34] 2.27 148520619- 13977271 As you can see, the next level would be 8.5 times as long. Someone with a faster CPU may want to try it. Starting with mere 77 legal moves an EBF above 8 is just a bit too much. Otherwise there were no surprises in the full statistics... a typical "lion" (== Leonid's creature :-). Cheers, Heiner
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