Author: John Merlino
Date: 15:44:19 11/06/03
Go up one level in this thread
On November 05, 2003 at 19:00:08, leonid wrote: >On November 05, 2003 at 18:30:13, John Merlino wrote: > >>On November 05, 2003 at 14:22:08, leonid wrote: >> >>>Hi >>> >>>This next mate was not very quick with my solver, so try You to solve it: >>> >>>[D] 2R2R2/2Q2Q2/q1Q2Q1q/q1R2R1q/q1B2B1r/q1NQQN1q/q6q/qbnQKnbk w - - >>> >>>Since I don't know what is minimal number of moves for this position, please >>>give Your number even if Your program saw position only partially. >>> >>>Cheers, >>>Leonid. >> >>Chessmaster 9000, default personality on a P4-2.4, says Mate in 13: >> >>Time Depth Score Positions Moves >>0:01 1/3 3.52 340874 1.Nxh2+ Q6xc6 2.Qxg1+ Kxg1 3.Qfd4+ >> Kh1 4.Qxc6+ Qaxc6 5.Bd5+ Qcxd5 >> 6.Qfxd5+ Qxd5 7.Qxd5+ Kg1 8.Rxh5 >> Rxh5 9.Q5xh5 Q6xh5 10.Rxh5 >>0:13 1/4 3.57 2580625 1.Nxh2+ Q6xc6 2.Qcxc6+ Qhg2 3.Qxg2+ >> Qxg2 4.Qxg1+ Kxg1 5.Qdd4+ Kh1 6.Rxh5 >> Qxd1+ 7.Qxd1 Qxf6 8.Qxf6 Nxh2 >>3:06 1/5 2.25 35892938 1.Nxh2+ Q6xc6 2.Qfxc6+ Qaxc6 3.Qxc6+ >> Qhg2 4.Qxg2+ Qxg2 5.Qxg1+ Kxg1 >> 6.Qd4+ Kh1 7.Rxa5 Qxf7 8.R8xf7 >> Rxf4 9.Rxf4 Qxa5 >>11:04 1/6 Mate13 136870160 1.Nxh2+ Q4xc6 2.Qxg1+ Kxg1 3.Qfd4+ >> Kh1 4.Qfd5+ Qxd5 5.Qxd5+ Kg1 6.Q5d4+ >> Kh1 7.Q4e4+ Kg1 8.Qdd4+ Ne3 9.Bxe3+ >> Q6xe3+ 10.Qexe3+ Qxe3+ 11.Qxe3+ >> Kh1 12.Rf1+ Kg2 13.Rg1# >>12:06 1/7 Mate13 150445998 1.Nxh2+ Q4xc6 2.Qxg1+ Kxg1 3.Qfd4+ >> Kh1 4.Qfd5+ Qxd5 5.Qxd5+ Kg1 6.Q5d4+ >> Kh1 7.Q4e4+ Kg1 8.Qdd4+ Ne3 9.Bxe3+ >> Q6xe3+ 10.Qexe3+ Qxe3+ 11.Qxe3+ >> Kh1 12.Rf1+ Kg2 13.Rg1# >>16:56 1/8 Mate13 215063448 1.Nxh2+ Q4xc6 2.Qxg1+ Kxg1 3.Qfd4+ >> Kh1 4.Qfd5+ Qxd5 5.Qxd5+ Kg1 6.Q5d4+ >> Kh1 7.Q4e4+ Kg1 8.Qdd4+ Ne3 9.Bxe3+ >> Q6xe3+ 10.Qexe3+ Qxe3+ 11.Qxe3+ >> Qf2+ 12.Qxf2+ Kh1 13.Qf1# > >It is interesting that You say this for mistaken position. For the correct >position my program also find mate only in 13 but by selective. Your look like >to be going in some brute force mood, since it found three solution for 13. > >I doubt very much that mine is able to see the same. On mine it was already >almost 14 minutes that it took verification of 9 moves by brute force. Only at >the night I expected to put 10 and 11 moves for verification. 12 moves is >absolutely out of reach for mine. > >I will try Your position. My program do not care about 10 queens. > >Cheers, >Leonid. > >>jm I'm sorry but I posted the above results for the wrong position. The above Mate in 13 was generated for the corrected position with 9 queens. jm
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