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Subject: Re: Mate in 11 to solve (Maybe mate in 9?)

Author: Charles Worthington

Date: 08:48:06 04/13/03

Go up one level in this thread

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
  +-  (#9)   Depth: 25/33   00:03:43  268506kN

(Worthington, MyTown 13.04.2003)

• Re: Mate in 11 to solve - (No it is Mate in 12 instead) Jorge Pichard 13:24:33 04/13/03
  • Re: Mate in 11 to solve - (No it is Mate in 12 instead) Uri Blass 13:41:06 04/13/03

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