Author: leonid
Date: 06:10:15 10/17/01
Go up one level in this thread
On October 16, 2001 at 19:13:11, Heiner Marxen wrote: >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, Hi! >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 Time is excellent! But did ever some other program came here in somehow close result in brute force? I don't remember anyone. Maybe I am missing something. >Herzliche Grüße aus Berlin, The same for you from Montreal, Leonid. >Heiner > > >>>Nice spiral ... another Chinese sign or just fantasy? >> >>Just a fantasy. >> >>Cheers, >>Leonid. >> >>>Groetjes, >>>Paul
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