Author: Heiner Marxen
Date: 16:13:11 10/16/01
Go up one level in this thread
On October 16, 2001 at 11:50:15, leonid wrote: >On October 16, 2001 at 10:12:33, Paul wrote: > >>On October 16, 2001 at 07:26:29, leonid wrote: >> >>>Hello! >>> >>>This mate position was not exactly easy for my selective but was still >>>accessible for brute force solution. Try to solve it on your own way. >>> >>>[D]2KRQRnr/2Q4q/2N1nq1k/2Q2q1q/b1Ppqb1r/q6N/pqBRQQQB/8 w - - >>> >>>Please indicate your result. >>> >>>Thanks, >>>Leonid. >> >>Hi guy, > >Hi, Paul! > >>I hope you don't mean that your selective search solved this one in 3 seconds in >>stead of .055 :) ... but Pretz didn't have too much trouble finding a mate in 11 >>in 11 seconds: > >Now you did better that me for sure. Mine took by selective, 11 moves deep, in >79 sec. > >This is position 11 moves deep. Solved it by brute force. It took 1 hour and 19 >min. Celeron 600Mhz. No hash. > >>00:11 WM11 08 Q2xh5+ Rxh5 Qxh7+ Rxh7 Rxf6+ Nxf6 Qeg6+ Qxg6 Bxf4+ Kg7 Qa7+ Qb7+ >>Qxb7+ Nc7 Qxc7+ Nd7 Qxd7+ Qae7 Qxe7+ Qxe7 Qxg6# Hello mate fans, Chest finds two solutions for the mate in 11: PV: Q2xh5+ Rxh5 Rxf6+ Nxf6 Qxh7+ Rxh7 Qgg6+ Qxg6 Bxf4+ Ng5 Qef8+ Rg7 Qxg5+ Qxg5 Qxf6+ Kh7 Nxg5+ Rhxg5 Bxe4+ R7g6 Rh8# PV: Qxh7+ Rxh7 Q2xh5+ Rxh5 Rxf6+ Nxf6 Qgg6+ Qxg6 Bxf4+ Ng5 Qef8+ Rg7 Qxg5+ Qxg5 Qxf6+ Kh7 Nxg5+ Rhxg5 Bxe4+ R7g6 Rh8# On my K7/600 with 350 MB hash that took 21 minutes. Timing: # 1 0.00s 0kN 0.87 1- 0 # 2 0.00s 0kN 1.00 1- 0 # 3 0.02s 1kN [ 9.73] 0.94 91- 0 # 4 0.08s [ 4.00] 7kN [ 7.25] 1.05 368- 0 # 5 0.41s [ 5.12] 31kN [ 4.66] 1.26 1791- 0 # 6 1.72s [ 4.20] 127kN [ 4.06] 1.61 8201- 0 # 7 6.37s [ 3.70] 478kN [ 3.77] 2.18 30602- 0 # 8 25.52s [ 4.01] 1892kN [ 3.96] 3.13 130520- 0 # 9 98.62s [ 3.86] 7190kN [ 3.80] 4.50 542991- 0 # 10 357.13s [ 3.62] 25000kN [ 3.48] 6.29 2091028- 78 # 11 1259.30s [ 3.53] 82123kN [ 3.28] 7.86 7728629- 483006 Herzliche Grüße aus Berlin, Heiner >>Nice spiral ... another Chinese sign or just fantasy? > >Just a fantasy. > >Cheers, >Leonid. > >>Groetjes, >>Paul
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