Author: Uri Blass
Date: 13:41:06 04/13/03
Go up one level in this thread
On April 13, 2003 at 16:24:33, Jorge Pichard wrote: >On April 13, 2003 at 11:48:06, Charles Worthington wrote: > >>On April 13, 2003 at 09:41:53, Djordje Vidanovic wrote: >> >>>On April 13, 2003 at 03:21:33, jjjj wrote: >>> >>>>hello, >>>> >>>>can your engine solve this forced mate in 11 ? >>>> >>>>r4qnk/2p3b1/1pN5/3PNb2/4Bp1B/p7/PP4QP/6RK b - - 0 43 >>>>wKh1,Qg2,Nc6,e5,Be4,h4,Rg1,Pa2,b2,d5,h2/bKh8,Qf8,Ng8,Bf5,g7,Ra8,Pa3,b6,c7,f4 >>> >>> >>>New game >>>r4qnk/2p3b1/1pN5/3PNb2/4Bp1B/p7/PP4QP/6RK b - - 0 1 >>> >>>Analysis by Deep Junior 7: >>> >>>1...axb2 2.Bxf5 Bxe5 >>> +- (1.58) Depth: 3 00:00:00 >>>1...Bxe4 2.Qxe4 axb2 3.Ng6+ >>> +- (1.49) Depth: 3 00:00:00 >>>1...Bxe5 2.Nxe5 Bxe4 3.Qxe4 >>> +- (1.46) Depth: 3 00:00:00 >>>1...Bxe5 2.Nxe5 Ne7 3.Bxf5 Nxf5 >>> +- (2.59) Depth: 6 00:00:00 10kN >>>1...Bxe5 2.Nxe5 Rd8 3.Bxf5 Rd6 4.Ng6+ Rxg6 5.Qxg6 f3 >>> +- (6.81) Depth: 9 00:00:01 1267kN >>>1...Bh6 2.Bxf5 Qxf5 3.Nd8 Rxd8 4.Bxd8 Qh7 5.Ng6+ Kg7 6.Ne7+ Kf7 7.Nxg8 Bg7 >>> +- (5.65) Depth: 9 00:00:02 2763kN >>>1...Bh6 2.Bxf5 Qxf5 3.Nd8 Rxd8 4.Bxd8 Bg5 5.Bxg5 Qh7 6.Bxf4 Nf6 7.Ng6+ Kg8 8.Be5 >>> +- (7.88) Depth: 12 00:00:04 5659kN >>>1...Bh6 2.Ng6+ Bxg6 3.Qxg6 Qg7 4.Qh5 Nf6 5.Bxf6 Qxf6 6.Rg6 Qf8 7.Rxh6+ Qxh6 >>>8.Qxh6+ Kg8 9.Bh7+ Kf7 10.Qg6+ Kf8 >>> +- (#11) Depth: 15 00:00:41 51762kN >>> >>>(Vidanovich, Filozofski fakultet 13.04.2003) >> >> >>Is it possible that there is a faster solution? Shredder 7.04, Dual 3.06GHz >>Xeons shows the following analysis: >> >>New game >>r4qnk/2p3b1/1pN5/3PNb2/4Bp1B/p7/PP4QP/6RK b - - 0 1 >> >>Analysis by Shredder 7.04: >> >>1...Bxe4 2.Qxe4 axb2 >> +- (4.72) Depth: 1/2 00:00:00 >>1...Bxe4 2.Qxe4 axb2 >> +- (4.72) Depth: 2/9 00:00:00 >>1...Bxe4 2.Qxe4 axb2 >> +- (4.72) Depth: 2/9 00:00:00 >>1...Bxe4 2.Qxe4 axb2 >> +- (4.72) Depth: 2/9 00:00:00 >>1...Bxe5 2.Nxe5 Bxe4 3.Qxe4 axb2 >> +- (4.71) Depth: 2/9 00:00:00 >>1...Bxe5 2.Nxe5 Bxe4 3.Qxe4 axb2 >> +- (4.57) Depth: 2/9 00:00:00 >>1...Bxe5 2.Nxe5 Bxe4 3.Qxe4 Ra5 4.bxa3 Rxa3 >> +- (4.57) Depth: 3/3 00:00:00 >>1...Bxe5 2.Nxe5 b5 3.Bxf5 Ne7 4.Bxe7 Qxe7 >> +- (5.32) Depth: 4/4 00:00:00 >>1...Bxe5 2.Nxe5 b5 3.Bxf5 Ne7 4.Bxe7 Qxe7 >> +- (5.88) Depth: 4/12 00:00:00 >>1...Bxe5 2.Nxe5 Re8 3.Qxg8+ Qxg8 4.Bf6+ Kh7 5.Bxf5+ Kh6 6.Rxg8 Rxg8 7.bxa3 >> +- (7.26) Depth: 4/12 00:00:00 >>1...f3 2.Qxf3 Bxe4 3.Qxe4 axb2 >> +- (7.25) Depth: 4/16 00:00:00 >>1...f3 2.Qxf3 Bxe4 3.Qxe4 axb2 >> +- (6.90) Depth: 4/16 00:00:00 >>1...f3 2.Qxf3 Bh7 3.bxa3 Qxf3+ 4.Bxf3 Rxa3 >> +- (6.12) Depth: 4/16 00:00:00 >>1...f3 2.Ng6+ Kh7 3.Nxf8+ Bxf8 4.Bxf5+ Kh6 5.Qxg8 >> +- (6.37) Depth: 5/13 00:00:00 >>1...f3 2.Ng6+ Bxg6 3.Qxg6 Qc8 >> +- (6.87) Depth: 5/13 00:00:00 >>1...f3 2.Ng6+ Bxg6 3.Qxg6 Nf6 4.Bxf6 Kg8 5.Ne7+ Qxe7 6.Bxe7 >> +- (16.57) Depth: 5/15 00:00:00 >>1...Bxe5 2.Nxe5 Nh6 3.Bxf5 f3 4.Ng6+ Kg7 5.Qxf3 Qxf5 6.Qxf5 Nxf5 7.bxa3 >> +- (7.47) Depth: 5/15 00:00:00 >>1...Bxe5 2.Nxe5 Nh6 3.Bxf5 f3 4.Ng6+ Kg7 5.Qxf3 Qxf5 6.Qxf5 Nxf5 7.bxa3 >> +- (7.47) Depth: 5/15 00:00:00 >>1...Bxe5 2.Nxe5 Nh6 3.Bxf5 f3 4.Ng6+ Kg7 5.Qxf3 Qxf5 6.Qxf5 Nxf5 7.bxa3 >> +- (7.47) Depth: 6/6 00:00:00 >>1...Bxe5 2.Nxe5 Nh6 3.Bxf5 Qg7 4.Qxg7# >> +- (7.72) Depth: 7/20 00:00:00 207kN >>1...Bxe5 2.Nxe5 Nh6 3.Bxf5 Qg7 4.Qxg7# >> +- (8.22) Depth: 7/20 00:00:00 225kN >>1...Bxe5 2.Nxe5 c5 3.Bxf5 Qh6 4.Ng6+ Kg7 5.Nf8+ Qg6 6.Bxg6 axb2 >> +- (12.94) Depth: 7/27 00:00:00 413kN >>1...Bh6 2.Bxf5 Qxf5 3.Bd8 Rxd8 4.Nxd8 Ne7 5.Nef7+ Kh7 6.Qg7+ Bxg7 >> +- (12.93) Depth: 7/27 00:00:00 494kN >>1...Bh6 2.Bxf5 Qxf5 3.Bd8 Rxd8 4.Nxd8 Nf6 5.Ndf7+ Kh7 6.bxa3 >> +- (12.58) Depth: 7/27 00:00:00 516kN >>1...Bh6 2.Bxf5 Qxf5 3.Nd8 Rxd8 4.Bxd8 Qh7 5.Ng6+ Kg7 6.Qc2 Nf6 7.Qc3 axb2 >>8.Qxf6+ Kg8 9.Nxf4+ Qg7 >> +- (11.76) Depth: 7/27 00:00:00 835kN >>1...Bh6 2.Bxf5 Qxf5 3.Nd8 Rxd8 4.Bxd8 Qh7 5.Ng6+ Kg7 6.Qc2 Qh8 7.Nxh8+ Kf8 >> +- (12.01) Depth: 8/22 00:00:01 1019kN >>1...Bh6 2.Bxf5 Qxf5 3.Nd8 Rxd8 4.Bxd8 Qh7 5.Ng6+ Kg7 6.Qc2 Qh8 7.Qxc7+ Ne7 >>8.Qe5+ Kf7 9.Nxh8+ Kf8 10.Qxe7# >> +- (12.51) Depth: 8/22 00:00:01 1036kN >>1...Bh6 2.Bxf5 Qxf5 3.Nd8 Ne7 4.Bxe7 Rxd8 5.Bxd8 Bg5 6.Qxg5 Qe4+ 7.Rg2 axb2 >>8.Qxf4 >> +- (13.48) Depth: 8/33 00:00:01 1262kN >>1...Bxe5 2.Nxe5 f3 3.Ng6+ Kg7 4.Qxf3 Qc5 5.Qxf5 Qb4 6.Qe5+ Kh6 7.Nf4 axb2 >> +- (13.47) Depth: 8/33 00:00:01 1360kN >>1...Bxe5 2.Nxe5 Ne7 3.Bxe7 Qxe7 4.Bxf5 c5 5.Ng6+ Kg8 6.Nxe7+ Kf8 7.bxa3 Kxe7 >> +- (13.47) Depth: 8/33 00:00:01 1528kN >>1...Bxe5 2.Nxe5 Ne7 3.Bxe7 Qxe7 4.Bxf5 axb2 5.Ng6+ Kg7 6.Nxe7+ Kh6 >> +- (13.72) Depth: 9/21 00:00:01 1968kN >>1...Bxe5 2.Nxe5 Ne7 3.Bxe7 Qxe7 4.Bxf5 axb2 5.Ng6+ Kg7 6.Nxe7+ Kh6 7.Qh3# >> +- (14.22) Depth: 9/22 00:00:02 2032kN >>1...Bxe5 2.Nxe5 f3 3.Ng6+ Kg7 4.Qxf3 Qc5 5.Qxf5 Qxg1+ 6.Kxg1 axb2 7.Qd7+ Kh6 >>8.Qxc7 Rxa2 >> +- (16.49) Depth: 9/31 00:00:02 2723kN >>1...Bh6 2.Bxf5 Qxf5 3.Nd8 Ne7 4.Bxe7 Rxd8 5.Bxd8 Bg5 6.Bxc7 axb2 7.Qh3+ Qxh3 >> +- (16.48) Depth: 9/31 00:00:02 2836kN >>1...Bh6 2.Bxf5 Qxf5 3.Nd8 Ne7 4.Bxe7 Rxd8 5.Bxd8 Bg5 6.Qxg5 Qxg5 7.Bxg5 axb2 >>8.Bxf4 >> +- (16.13) Depth: 9/31 00:00:02 2925kN >>1...Bh6 2.Bxf5 Qxf5 3.Nd8 Rxd8 4.Bxd8 Qh7 5.Ng6+ Kg7 6.Qc2 Bg5 7.Qxc7+ Ne7 >>8.Rxg5 axb2 9.Qxe7+ Kh6 10.Qxh7+ Kxh7 >> +- (14.73) Depth: 9/31 00:00:03 3408kN >>1...Bh6 2.Bxf5 Qxf5 3.Nd8 Rxd8 4.Bxd8 Qh7 5.Ng6+ Kg7 6.Qc2 Bg5 7.Qxc7+ Ne7 >>8.Rxg5 Qxg6 9.Rxg6+ Kxg6 >> +- (14.98) Depth: 10/26 00:00:03 3805kN >>1...Bh6 2.Bxf5 Qxf5 3.Nd8 Rxd8 4.Bxd8 Bg5 5.Bxg5 Qh7 6.Bd8 f3 7.Ng6+ Kg7 8.Qxf3 >>Qxg6 9.Qc3+ Kh6 10.Rxg6+ Kxg6 >> +- (15.37) Depth: 10/31 00:00:04 4279kN >>1...Bh6 2.Bxf5 Qxf5 3.Nd8 Rxd8 4.Bxd8 Bg5 5.Bxg5 Qh7 6.Bd8 f3 7.Qxf3 b5 8.Ng6+ >>Kg7 9.Ne7+ >> +- (15.62) Depth: 11/28 00:00:05 5468kN >>1...Bh6 2.Bxf5 Qxf5 3.Nd8 Rxd8 4.Bxd8 Bg5 5.Bxg5 Qh7 6.Bd8 f3 7.Qxf3 b5 8.Ng6+ >>Qxg6 9.Qc3+ Kh7 10.Qxc7+ Kh6 11.Qc1+ Kh5 12.Rxg6 >> +- (16.12) Depth: 11/28 00:00:05 5571kN >>1...Bh6 2.Bxf5 Qxf5 3.Nd8 Rxd8 4.Bxd8 Qh7 5.Ng6+ Kg7 6.Qe4 Bg5 7.Qe5+ Kf7 8.Rxg5 >>c5 9.Qe6+ Kg7 10.Nxf4+ Kf8 >> +- (18.07) Depth: 11/32 00:00:06 7162kN >>1...Ne7 2.Bxf5 Nxf5 3.Ng6+ Kh7 4.Nxf8+ Rxf8 5.Qg6+ Kh8 6.Be7 Ng3+ 7.hxg3 fxg3 >>8.Bxf8 Bxf8 9.Qf6+ Bg7 10.Qd8+ Kh7 11.bxa3 >> +- (18.06) Depth: 11/34 00:00:10 10622kN >>1...Ne7 2.Bxf5 f3 3.Ng6+ Nxg6 4.Qxg6 Bxb2 5.Qh7# >> +- (17.98) Depth: 11/34 00:00:10 11293kN >>1...Ne7 2.Bxf5 f3 3.Ng6+ Nxg6 4.Qxg6 Rd8 5.Nxd8 c5 6.Nf7+ Kg8 >> +- (18.23) Depth: 12/35 00:00:11 12529kN >>1...Ne7 2.Bxf5 f3 3.Ng6+ Nxg6 4.Qxg6 Rd8 5.Nxd8 Qg8 6.Nf7+ Qxf7 7.Qh7# >> +- (18.73) Depth: 12/35 00:00:12 12786kN >>1...Ne7 2.Bxf5 Nxf5 3.Ng6+ Kg8 4.Nce7+ Nxe7 5.Nxe7+ Qxe7 6.Bxe7 Kf7 7.Qxg7+ Ke8 >>8.Qf8+ Kd7 9.Qf5+ Kxe7 10.d6+ cxd6 11.Rg7+ Ke8 12.Qd7+ Kf8 13.Qf7# >> +- (#12) Depth: 12/36 00:00:14 15323kN >>1...Bxe5 2.Nxe5 f3 3.Ng6+ Kg7 4.Qg3 Qf6 5.Nf8+ Bg6 6.Bxf6+ Kxf6 7.Qxf3+ Ke7 >>8.Nxg6+ Kd7 9.Nf8+ Kc8 10.Rxg8 axb2 11.Ne6+ Kb7 >> +- (18.80) Depth: 12/36 00:00:14 15339kN >>1...Bxe5 2.Nxe5 f3 3.Ng6+ Kg7 4.Qg3 Qf6 5.Nf8+ Bg6 6.Bxf6+ Kxf6 7.Qxf3+ Ke7 >>8.Nxg6+ Kd7 9.Nf8+ Kd6 10.Rxg8 Rc8 >> +- (18.80) Depth: 12/36 00:00:19 20419kN >>1...Bxe5 2.Nxe5 f3 3.Ng6+ Kg7 4.Qg3 Qf6 5.Nf8+ Bg6 6.Bxf6+ Kxf6 7.Qxf3+ Bf5 >>8.Qxf5+ Ke7 9.Rxg8 Rxf8 10.Qxf8+ Kd7 >> +- (19.05) Depth: 13/35 00:00:39 42445kN >>1...Bxe5 2.Nxe5 f3 3.Ng6+ Kg7 4.Qg3 Qf6 5.Nf8+ Bg6 6.Bxf6+ Kxf6 7.Qxf3+ Bf5 >>8.Qxf5+ Ke7 9.Rxg8 Rxf8 10.Qxf8+ Kd7 >> +- (28.90) Depth: 13/35 00:00:39 42626kN >>1...Bxe5 2.Nxe5 Nh6 3.Bxf5 Nxf5 4.Ng6+ Kg7 5.Nxf8+ Ng3+ 6.hxg3 f3 7.Ne6+ Kh8 >>8.Qxf3 Kh7 9.Qh5+ >> +- (#18) Depth: 13/36 00:00:44 48769kN >>1...Bh6 2.Bxf5 Qxf5 3.Nd8 Ne7 4.Bxe7 Bg5 5.Ndf7+ Kg7 6.Nxg5 Qxg5 >> +- (28.90) Depth: 13/36 00:00:44 48781kN >>1...Bh6 2.Bxf5 Qxf5 3.Nd8 Ne7 4.Bxe7 Bg5 5.Ndf7+ Kg7 6.Nxg5 Qxg5 >> +- (28.90) Depth: 13/36 00:00:44 48792kN >>1...Bh6 2.Bxf5 Qxf5 3.Nd8 Rxd8 4.Bxd8 Bg5 5.Bxg5 Nh6 6.Bxh6 axb2 7.Qg8# >> +- (28.91) Depth: 14/37 00:01:00 67759kN >>1...Bh6 2.Bxf5 Qxf5 3.Nd8 Rxd8 4.Bxd8 Bg5 5.Bxg5 Qxe5 6.Bf6+ Kh7 7.Qxg8+ Kh6 >>8.Bxe5 f3 9.bxa3 c6 10.dxc6 >> +- (29.16) Depth: 15/39 00:01:16 86265kN >>1...Bh6 2.Bxf5 Qxf5 3.Nd8 Rxd8 4.Bxd8 Qg5 5.Nf7+ Kg7 6.Nxg5 axb2 7.Nf7+ Bg5 >>8.Qxg5+ Kf8 9.Qxg8# >> +- (29.66) Depth: 15/39 00:01:19 89860kN >>1...Bh6 2.Bxf5 Qxf5 3.Nd8 Rxd8 4.Bxd8 Bg5 5.Bxg5 Qxg5 6.Qxg5 Kh7 7.bxa3 Nf6 >>8.Qg7# >> +- (29.66) Depth: 15/42 00:01:30 104176kN >>1...Bh6 2.Bxf5 Qxf5 3.Nd8 Rxd8 4.Bxd8 Bg5 5.Bxg5 Qxg5 6.Qxg5 Kh7 7.bxa3 Kh8 >>8.Qxf4 Nf6 9.Qxf6+ Kh7 10.Qg7# >> +- (29.91) Depth: 16/41 00:02:11 154086kN >>1...Bh6 2.Bxf5 Qxf5 3.Nd8 Rxd8 4.Bxd8 Bg5 5.Bxg5 Qxg5 6.Qxg5 Kh7 7.bxa3 Kh8 >>8.Qxf4 Nf6 9.Qxf6+ Kh7 10.Qg7# >> +- (30.41) Depth: 16/41 00:02:13 155637kN >>1...Bh6 2.Bxf5 Qxf5 3.Nd8 Bg5 4.Ndf7+ Qxf7 5.Nxf7+ Kg7 >> +- (#19) Depth: 16/41 00:02:17 161290kN >>1...Bxe5 2.Nxe5 Nh6 3.Bxf5 Nxf5 4.Ng6+ Kg7 5.Nxf8+ Ng3+ 6.hxg3 f3 7.Ne6+ Kh8 >>8.Qxf3 Rg8 9.Qh5# >> +- (#20) Depth: 16/41 00:02:18 161857kN >>1...Bxe5 2.Nxe5 Nh6 3.Bxf5 Nxf5 4.Ng6+ Kg7 5.Nxf8+ Ng3+ 6.hxg3 f3 7.Ne6+ Kh8 >>8.Qxf3 Rb8 9.Qc3+ Kg8 10.Qg7# >> +- (#20) Depth: 16/41 00:02:19 164080kN >>1...Bxe4 2.Qxe4 Bxe5 3.Nxe5 Ne7 4.Bxe7 Qg7 5.Rxg7 axb2 6.Bf6 b1B 7.Ng6# >> +- (#20) Depth: 16/41 00:02:20 164479kN >>1...Bxe4 2.Qxe4 axb2 3.Ng6+ Kh7 4.Nxf8+ Kh8 5.Qg6 Nf6 6.Bxf6 Rxf8 7.Qxg7# >> +- (#20) Depth: 16/43 00:02:22 166655kN >>1...Nh6 2.Ng6+ Bxg6 3.Qxg6 Nf5 4.Bxf5 Qe7 5.Bxe7 Ra7 6.Nxa7 Bxb2 7.Qh7# >> +- (#21) Depth: 16/43 00:02:22 166799kN >>1...Nh6 2.Ng6+ Kg8 3.Bxf5 Ng4 4.Nxf8 Rd8 5.Bxd8 Kf7 6.Bxg4 Kxf8 7.Bxc7 Bd4 8.Bh5 >> +- (#21) Depth: 16/45 00:02:28 174598kN >>1...Ra4 2.Bxf5 Qxf5 3.bxa3 Bxe5 4.Qxg8# >> +- (#22) Depth: 16/45 00:02:28 174679kN >>1...Ra4 2.Bxf5 Qxf5 3.bxa3 Qxe5 4.Nxe5 f3 5.Nxf3 Rxa3 6.Qxg7# >> +- (#22) Depth: 16/45 00:02:28 174931kN >>1...Rc8 2.Bxf5 f3 3.Ng6+ Kh7 4.Nxf8+ Kh6 5.Qxf3 Bxb2 6.Rg6# >> +- (#22) Depth: 16/45 00:02:28 175082kN >>1...Rc8 2.Bxf5 f3 3.Ng6+ Kh7 4.Nxf8+ Kh6 5.Qxf3 Bxb2 6.Rg6# >> +- (#22) Depth: 16/45 00:02:29 175221kN >>1...Rb8 2.Bxf5 axb2 3.Ng6+ Kh7 4.Nxf8+ Kh6 >> +- (#23) Depth: 16/45 00:02:29 175328kN >>1...Rb8 2.Bxf5 axb2 3.Ng6+ Kh7 4.Nxf8+ Kh6 >> +- (#23) Depth: 16/45 00:02:29 175351kN >>1...Ra7 2.Bxf5 Bxe5 3.Nxe5 Ne7 4.Bxe7 Qxf5 5.Qg7# >> +- (#23) Depth: 16/45 00:02:29 175595kN >>1...Ra7 2.Bxf5 Bxe5 3.Nxe5 Ne7 4.Bxe7 Qxf5 5.Qg7# >> +- (#23) Depth: 16/45 00:02:29 175713kN >>1...Ra7 2.Bxf5 Bxe5 3.Nxe5 Ne7 4.Bxe7 Qxf5 5.Qg7# >> +- (#11) Depth: 17/17 00:02:29 175821kN >>1...Ra7 2.Bxf5 Bxe5 3.Nxe5 Ne7 4.Bxe7 Qxf5 5.Qg7# >> +- (#6) Depth: 17/17 00:02:29 176066kN >>1...Bh6 2.Bxf5 Qxf5 3.Nd8 Bg5 4.Ndf7+ Qxf7 5.Nxf7+ Kg7 6.Qxg5+ Kh7 7.Qxf4 axb2 >>8.Qf5# >> +- (#19) Depth: 17/17 00:02:29 176080kN >>1...Bh6 2.Bxf5 Qxf5 3.Nd8 Bg5 4.Ndf7+ Qxf7 5.Nxf7+ Kg7 6.Qxg5+ Kh7 7.Qxf4 axb2 >>8.Qf5# >> +- (#19) Depth: 17/22 00:02:29 176178kN >>1...Bxe5 2.Nxe5 Nh6 3.Bxf5 Nxf5 4.Ng6+ Kg7 5.Nxf8+ Ng3+ 6.hxg3 f3 7.Ne6+ Kh8 >>8.Qxf3 Rf8 9.Qxf8+ Kh7 10.Qg7# >> +- (#20) Depth: 17/23 00:02:30 176565kN >>1...Bxe5 2.Nxe5 Nh6 3.Bxf5 Nxf5 4.Ng6+ Kg7 5.Nxf8+ Ng3+ 6.hxg3 f3 7.Ne6+ Kh8 >>8.Qxf3 Rf8 9.Qxf8+ Kh7 10.Qg7# >> +- (#20) Depth: 17/23 00:02:30 176945kN >>1...Bxe4 2.Qxe4 axb2 3.Ng6+ Kh7 4.Nxf8+ Kh8 5.Qg6 Nf6 6.Bxf6 Rxa2 7.Qxg7# >> +- (#20) Depth: 17/23 00:02:30 177073kN >>1...Bxe4 2.Qxe4 axb2 3.Ng6+ Kh7 4.Nxf8+ Kh8 5.Qg6 Nf6 6.Bxf6 Rxa2 7.Qxg7# >> +- (#20) Depth: 17/23 00:02:30 177295kN >>1...Nh6 2.Ng6+ Kg8 3.Bxf5 Ng4 4.Nxf8 Rd8 5.Bxd8 Kf7 6.Bxg4 Kxf8 7.Bxc7 Bd4 8.Bh5 >>Bg7 >> +- (#21) Depth: 17/23 00:02:30 177349kN >>1...Nh6 2.Ng6+ Kg8 3.Bxf5 Ng4 4.Nxf8 Rd8 5.Bxd8 Kf7 6.Bxg4 Kxf8 7.Bxc7 Bd4 8.Bh5 >>Bg7 >> +- (#21) Depth: 17/23 00:02:31 177647kN >>1...axb2 2.Bxf5 Bxe5 3.Nxe5 Rxa2 4.Ng6+ Kg7 5.Nxf8+ Kf7 6.Qxg8+ Ke8 7.Be6 b1Q >>8.Bd7# >> +- (#22) Depth: 17/23 00:02:31 178012kN >>1...axb2 2.Bxf5 Bxe5 3.Nxe5 Rxa2 4.Ng6+ Kg7 5.Nxf8+ Kf7 6.Qxg8+ Ke8 7.Be6 b1Q >>8.Bd7# >> +- (#22) Depth: 17/23 00:02:31 178028kN >>1...axb2 2.Bxf5 Bxe5 3.Nxe5 Rxa2 4.Ng6+ Kg7 5.Nxf8+ Kf7 6.Qxg8+ Ke8 7.Be6 b1Q >>8.Bd7# >> +- (#9) Depth: 18/18 00:02:31 178191kN >>1...axb2 2.Bxf5 Bxe5 3.Nxe5 Rxa2 4.Ng6+ Kg7 5.Nxf8+ Kf7 6.Qxg8+ Ke8 7.Be6 b1Q >>8.Bd7# >> +- (#8) Depth: 18/18 00:02:31 178696kN >>1...Bh6 2.Bxf5 Qxf5 3.Nd8 Bg5 4.Ndf7+ Qxf7 5.Nxf7+ Kg7 6.Qxg5+ Kh7 7.Qxf4 Ra6 >>8.Qf5# >> +- (#8) Depth: 18/18 00:02:31 178939kN >>1...Bh6 2.Bxf5 Qxf5 3.Nd8 Rxd8 4.Bxd8 Bg5 5.Bxg5 Qh7 6.Bd8 axb2 7.Qxb2 Ne7 >>8.Nf7# >> +- (#18) Depth: 18/41 00:02:43 193035kN >>1...Bxe5 2.Nxe5 Nh6 3.Bxf5 Nxf5 4.Ng6+ Kg7 5.Nxf8+ Ng3+ 6.hxg3 f3 7.Ne6+ Kh8 >>8.Qxf3 axb2 9.Qc3+ Kh7 10.Qg7# >> +- (#19) Depth: 18/41 00:02:43 193453kN >>1...Bxe5 2.Nxe5 Nh6 3.Bxf5 Nxf5 4.Ng6+ Kg7 5.Nxf8+ Ng3+ 6.hxg3 f3 7.Ne6+ Kh8 >>8.Qxf3 axb2 9.Qc3+ Kh7 10.Qg7# >> +- (#19) Depth: 18/43 00:02:47 197538kN >>1...Bxe4 2.Qxe4 Qf5 3.Qxf5 axb2 4.Ng6+ Kh7 5.Nf8+ Kh6 6.Qxf4+ Kh5 7.Qg5# >> +- (#19) Depth: 18/43 00:02:47 197729kN >>1...Bxe4 2.Qxe4 Nf6 3.Ng6+ Kh7 4.Nxf8+ Kg8 5.Qxf4 Kxf8 6.Bxf6 axb2 7.Bxg7+ >> +- (#20) Depth: 18/43 00:02:47 198304kN >>1...Nh6 2.Ng6+ Kg8 3.Bxf5 Ng4 4.Nxf8 Rd8 5.Bxd8 Kf7 6.Bxg4 Kxf8 7.Bxc7 Bd4 8.Bh5 >>Be3 9.Qg7# >> +- (#21) Depth: 18/43 00:02:47 198319kN >>1...Nh6 2.Ng6+ Kg8 3.Bxf5 Ng4 4.Nxf8 Rd8 5.Bxd8 Kf7 6.Bxg4 Kxf8 7.Bxc7 Bd4 8.Bh5 >>Be3 9.Qg7# >> +- (#21) Depth: 18/43 00:02:47 198332kN >>1...Nh6 2.Ng6+ Kg8 3.Bxf5 Ng4 4.Nxf8 Rd8 5.Bxd8 Kf7 6.Bxg4 Kxf8 7.Bxc7 Bd4 8.Bh5 >>Be3 9.Qg7# >> +- (#21) Depth: 19/19 00:02:48 198527kN >>1...Nh6 2.Ng6+ Kg8 3.Bxf5 Ng4 4.Nxf8 Rd8 5.Bxd8 Kf7 6.Bxg4 Kxf8 7.Bxc7 Bd4 8.Bh5 >>Be3 9.Qg7# >> +- (#21) Depth: 20/20 00:02:48 198773kN >>1...Nh6 2.Ng6+ Kg8 3.Bxf5 Ng4 4.Nxf8 Rd8 5.Bxd8 Kf7 6.Bxg4 Kxf8 7.Bxc7 Bd4 8.Bh5 >>Be3 9.Qg7# >> +- (#21) Depth: 21/31 00:02:49 200595kN >>1...Nh6 2.Ng6+ Kg8 3.Bxf5 Ng4 4.Nxf8 Rd8 5.Bxd8 Kf7 6.Bxg4 Kxf8 7.Bxc7 Bd4 8.Bh5 >>Be3 9.Qg7# >> +- (#21) Depth: 22/35 00:02:56 207972kN >>1...Nh6 2.Ng6+ Kg8 3.Bxf5 Ng4 4.Nxf8 Rd8 5.Bxd8 Kf7 6.Bxg4 Kxf8 7.Bxc7 Bd4 8.Bh5 >>Be3 9.Qg7# >> +- (#21) Depth: 23/31 00:02:59 212651kN >>1...Nh6 2.Ng6+ Kg8 3.Bxf5 Re8 4.Be6+ Rxe6 5.dxe6 Qf6 6.Nce7+ Kh7 7.Bxf6 Bxf6 >>8.Nf8+ Kh8 9.Qg6 c6 10.Qxh6# >> +- (#21) Depth: 24/31 00:03:07 221716kN >>1...Nf6 2.Bxf5 Nh5 3.Ng6+ Kg8 4.Nxf8 Rb8 5.Be6+ Kh8 6.Qg6 Rxf8 7.Qxh5+ Bh6 >>8.Qxh6# >> +- (#21) Depth: 24/31 00:03:10 225947kN >>1...Nf6 2.Bxf5 Nh5 3.Ng6+ Kg8 4.Nxf8 Rb8 5.Be6+ Kh8 6.Qg6 Rxf8 7.Qxh5+ Bh6 >>8.Qxh6# >> +- (#21) Depth: 24/31 00:03:12 228076kN >>1...Nf6 2.Bxf5 Nh5 3.Ng6+ Kg8 4.Nxf8 Rb8 5.Be6+ Kh8 6.Qg6 Rxf8 7.Qxh5+ Bh6 >>8.Qxh6# >> +- (#9) Depth: 25/25 00:03:14 230552kN >>1...Nf6 2.Bxf5 Nh5 3.Ng6+ Kg8 4.Nxf8 Rb8 5.Be6+ Kh8 6.Qg6 Rxf8 7.Qxh5+ Bh6 >>8.Qxh6# >> +- (#9) Depth: 25/25 00:03:23 243823kN >>1...Bh6 2.Bxf5 Qxf5 3.Nd8 Rxd8 4.Bxd8 Bg5 5.Bxg5 Qh7 6.Bd8 axb2 7.Qxb2 Qe4+ >>8.Nf3+ Qe5 9.Nxe5 Nf6 10.Nf7+ Kh7 11.Qc2+ Ne4 12.Qxe4# Mate >> +- (#9) Depth: 25/33 00:03:43 268506kN >> >>(Worthington, MyTown 13.04.2003) > >It is still Mate in 12 > > >[D]3B4/2p2N1k/1p6/3P4/4Qp2/8/P6P/6RK b - - 0 12 > >1...Bh6 2.Bxf5 Qxf5 3.Nd8 Rxd8 4.Bxd8 Bg5 5.Bxg5 Qh7 6.Bd8 axb2 7.Qxb2 Qe4+ >8.Nf3+ Qe5 9.Nxe5 Nf6 10.Nf7+ Kh7 11.Qc2+ Ne4 12.Qxe4# Mate > >Pichard I do not know. The main line may be wrong. The question is if the score is correct and not if the main line is mate in 12. I did not try to solve the question. Uri
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Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.