Author: leonid
Date: 05:36:17 05/19/01
Go up one level in this thread
On May 18, 2001 at 22:03:13, Heiner Marxen wrote: >On May 17, 2001 at 13:50:30, leonid wrote: > >>Hi! >> >>If somebody would like very easy mate, then this veriation from this first is >>exactly this. >> >>[D]qr3rqB/3k3B/N1qqq1NQ/Q1n1n2Q/1qQ1Qq1Q/2RNR2Q/Q2K3b/1q3q1b w - - >> >>Please indicate your result. >> >>Thanks, >>Leonid. > >Mate in 8. Two key moves. On K7/600 with 350 MB hash Chest after 441.12 sec >(7.4 min) mutters: Excellent! Mine by brute force reached first solution (not all) in 4 min 10 sec. > >Nxc5+ Qbxc5 Nxe5+ Qfxe5 Q6xe6+ Qdxe6 Nxc5+ Kc8 Qhxe6+ Qcxe6 Qxe6+ Qexe6 >Qexe6+ Qxe6 Qxe6# > >Nxe5+ Qfxe5 Nxc5+ Qbxc5 Q6xe6+ Qdxe6 Nxc5+ Kc8 Qhxe6+ Qcxe6 Qxe6+ Qexe6 >Qexe6+ Qxe6 Qxe6# > >As often, symetric solutions to a (nearly) symetric problem. >Timing info reveals that Chest does feel quite comfortly: > >depth seconds ># 3 0.02 0.96 72- 0 ># 4 0.24 1.12 667- 0 ># 5 2.05 1.28 6153- 0 ># 6 13.72 1.53 44092- 0 ># 7 79.46 2.02 265586- 0 ># 8 441.02 2.70 1524472- 9 Here I am confused. What is your node/per/second for 8 moves? Mine is 93k per second when it looked 8 moves deep and by brute force. I am so exact in indication since search 7 moves deep, for instance, give different number. It is 152k. NPS for 5 and 6 moves deep is also different. Strange but true. Cheers, Leonid. > > white black quotients >mvx 8: 32 38 [ 32.000 1.188] 39 >mvx 7: 708 722 [ 18.632 1.020] 91 >mvx 6: 7324 8085 [ 10.144 1.104] 185 >mvx 5: 57939 69121 [ 7.166 1.193] 1052 147 >mvx 4: 423641 537738 [ 6.129 1.269] 5565 198 >mvx 3: 2906635 3507479 [ 5.405 1.207] >mvx 2: 14814509 2992977 [ 4.224 0.202] >mvx 1: 275837 0 [ 0.092 ] > >Also, black likes to deliver mate-in-1 to white: >anti: 2529687 try, 1637033 lists [64.71%], 2376273 moves [93.94%], 1461034 succ >[57.76%] > >Cheers, >Heiner
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