Author: Dana Turnmire
Date: 21:39:13 12/28/02
Go up one level in this thread
On December 28, 2002 at 23:45:32, Steven J. Brann wrote: >[snip] >>I backed the problem one move prior to Qa7 and standard CM9K out of the box saw >>mate-in-16 in 58 seconds on my machine (Xeon P4 1.8 Ghz Win 2K). I tested many >>of the big name engines I have and not one found it in less than a minute. I >>also tried it with the Utzinger settings and that did not find in on my machine >>i>1". >> >>He is running pretty fast machine. >> >>Michael > >[D]n2k2qr/3p2Nn/2pPp2p/4p3/1B1P4/Q5P1/5P2/1B1KR3 b - - 0 1 > >My P4 1.9G machine doesn't perform particularly well vs. other machines of >similar CPU speed. However, increasing the selective search setting will >usually help reduce time to find long mates. Mate in 16 in 47 seconds and then >shortened to Mate in 15. I was running the default personality on an AMD 1800+ 64meg/RAM with ponder off. I don't remember the exact time it took to find mate in 16 but it found it with game/90 time control. > >CM9000 default with 128M hash; SS = 12 > >(backed up one move) > >Time Depth Score Positions Moves >0:00 1/5 8.31 6900 1...Nb6 2.Qa7 Qxg7 3.Qb8+ Nc8 4.Ba5+ > Ke8 5.Qxc8+ Kf7 6.Qxd7+ Kg8 7.Qxe6+ > Qf7 8.Qxf7+ Kxf7 9.dxe5 >0:00 1/6 8.69 23203 1...Nb6 2.Qa7 Qxg7 3.Qb8+ Nc8 4.Ba5+ > Ke8 5.Qxc8+ Kf7 6.Qxd7+ Kg8 7.Qxe6+ > Qf7 8.Ba2 Qxe6 9.Bxe6+ Kg7 10.dxe5 >0:00 1/7 9.72 70542 1...Nb6 2.Qa7 Qxg7 3.Qb8+ Nc8 4.Ba5+ > Ke8 5.Qxc8+ Kf7 6.Qxd7+ Kg8 7.Qxe6+ > Qf7 8.Qg4+ Ng5 9.d7 Kg7 10.d8=Q > Rxd8 11.Bxd8 >0:01 1/8 12.89 178846 1...Nb6 2.Qa7 Qxg7 3.Qb8+ Nc8 4.Qc7+ > Ke8 5.Qxc8+ Kf7 6.Qxd7+ Kg8 7.Qe8+ > Nf8 8.d7 c5 9.d8=Q cxb4 10.Qxe6+ > Qf7 11.Qxf7+ Kxf7 12.dxe5 >0:02 1/9 15.75 410885 1...Nb6 2.Qa7 Qxg7 3.Qb8+ Nc8 4.Qc7+ > Ke8 5.Qxc8+ Kf7 6.Qxd7+ Kg8 7.Qe8+ > Nf8 8.d7 c5 9.d8=Q Qg4+ 10.Kc1 > Qg5+ 11.Qxg5+ hxg5 12.dxc5 >0:04 1/10 16.29 1095748 1...Nb6 2.Qa7 Qxg7 3.Qb8+ Nc8 4.Qc7+ > Ke8 5.Qxc8+ Kf7 6.Qxd7+ Kg8 7.Qe8+ > Nf8 8.d7 c5 9.d8=Q Rh7 10.Bxh7+ > Kxh7 11.dxc5 >0:14 1/11 25.18 3367368 1...Nb6 2.Qa7 Qxg7 3.Qb8+ Nc8 4.Qc7+ > Ke8 5.Qxc8+ Kf7 6.Qxd7+ Kg8 7.Qe8+ > Nf8 8.d7 c5 9.d8=Q e4 10.Qxe6+ > Qf7 11.Ba2 Rh7 12.Qg6+ Kh8 13.Bxf7 >0:47 1/12 Mate16 11696135 1...Nb6 2.Qa7 Qxg7 3.Qb8+ Nc8 4.Qc7+ > Ke8 5.Qxc8+ Kf7 6.Qxd7+ Kf8 7.Qd8+ > Kf7 8.Qe7+ Kg8 9.Qe8+ Nf8 10.d7 > c5 11.d8=Q e4 12.Qxe6+ Qf7 13.Bxc5 > Kg7 14.Qxf7+ Kxf7 15.Qe7+ Kg8 16.Qxf8+ > Kh7 >2:11 1/13 Mate15 32918343 1...Nb6 2.Qa7 Qxg7 3.Qb8+ Nc8 4.Qc7+ > Ke8 5.Qxc8+ Kf7 6.Qxd7+ Kf8 7.Qd8+ > Kf7 8.Qc7+ Kg8 9.d7 Qg4+ 10.Kc1 > Qg5+ 11.f4 exf4 12.d8=Q+ Qxd8 13.Qxd8+ > Kg7 14.Qe7+ Kg8 15.Bxh7+ Rxh7 16.Qf8# >6:10 2/14 Mate15 94268178 1...Nb6 2.Qa7 Qxg7 3.Qb8+ Nc8 4.Qc7+ > Ke8 5.Qxc8+ Kf7 6.Qxd7+ Kf8 7.Qd8+ > Kf7 8.Qc7+ Kg8 9.d7 Qg4+ 10.Kc1 > Qg5+ 11.f4 exf4 12.d8=Q+ Qxd8 13.Qxd8+ > Kg7 14.Qe7+ Kg8 15.Bxh7+ Rxh7 16.Qf8# > >Chessmaster default: > >CM9000 default > >Time Depth Score Positions Moves >0:00 1/4 8.03 3104 1...Nb6 2.Qa7 Qxg7 3.Qb8+ Nc8 4.Qc7+ > Ke8 5.Qxc8+ Kf7 6.Qxd7+ Kg8 7.Qxe6+ > Qf7 8.Qxf7+ Kxf7 9.dxe5 >0:00 1/5 8.31 6900 1...Nb6 2.Qa7 Qxg7 3.Qb8+ Nc8 4.Ba5+ > Ke8 5.Qxc8+ Kf7 6.Qxd7+ Kg8 7.Qxe6+ > Qf7 8.Qxf7+ Kxf7 9.dxe5 >0:00 1/6 8.69 23203 1...Nb6 2.Qa7 Qxg7 3.Qb8+ Nc8 4.Ba5+ > Ke8 5.Qxc8+ Kf7 6.Qxd7+ Kg8 7.Qxe6+ > Qf7 8.Ba2 Qxe6 9.Bxe6+ Kg7 10.dxe5 >0:00 1/7 9.72 70542 1...Nb6 2.Qa7 Qxg7 3.Qb8+ Nc8 4.Ba5+ > Ke8 5.Qxc8+ Kf7 6.Qxd7+ Kg8 7.Qxe6+ > Qf7 8.Qg4+ Ng5 9.d7 Kg7 10.d8=Q > Rxd8 11.Bxd8 >0:00 1/8 12.89 178846 1...Nb6 2.Qa7 Qxg7 3.Qb8+ Nc8 4.Qc7+ > Ke8 5.Qxc8+ Kf7 6.Qxd7+ Kg8 7.Qe8+ > Nf8 8.d7 c5 9.d8=Q cxb4 10.Qxe6+ > Qf7 11.Qxf7+ Kxf7 12.dxe5 >0:01 1/9 15.75 410460 1...Nb6 2.Qa7 Qxg7 3.Qb8+ Nc8 4.Qc7+ > Ke8 5.Qxc8+ Kf7 6.Qxd7+ Kg8 7.Qe8+ > Nf8 8.d7 c5 9.d8=Q Qg4+ 10.Kc1 > Qg5+ 11.Qxg5+ hxg5 12.dxc5 >0:04 1/10 16.29 1096202 1...Nb6 2.Qa7 Qxg7 3.Qb8+ Nc8 4.Qc7+ > Ke8 5.Qxc8+ Kf7 6.Qxd7+ Kg8 7.Qe8+ > Nf8 8.d7 c5 9.d8=Q Rh7 10.Bxh7+ > Kxh7 11.dxc5 >0:14 2/11 25.18 3578137 1...Nb6 2.Qa7 Qxg7 3.Qb8+ Nc8 4.Qc7+ > Ke8 5.Qxc8+ Kf7 6.Qxd7+ Kg8 7.Qe8+ > Nf8 8.d7 c5 9.d8=Q e4 10.Qxe6+ > Qf7 11.Ba2 Rh7 12.Qg6+ Kh8 13.Bxf7 >4:10 3/12 Mate16 63312568 1...Nb6 2.Qa7 Qxg7 3.Qb8+ Nc8 4.Qc7+ > Ke8 5.Qxc8+ Kf7 6.Qxd7+ Kf8 7.Qd8+ > Kf7 8.Qe7+ Kg8 9.Qe8+ Nf8 10.d7 > c5 11.d8=Q e4 12.Qxe6+ Qf7 13.Bxc5 > Kg7 14.Qxf7+ Kxf7 15.Qe7+ Kg8 16.Qxf8+ > Kh7 > >Note: It would appear that the mate in 16 output is about maximum for the copy >contents fucntion to pick up. The (#) character signifying mate is missing from >the last move. > >Steve
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