Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: Really a Mate in 9.....Thanks...:-)

Author: Rob Basham

Date: 06:28:11 05/22/05

Go up one level in this thread


On May 22, 2005 at 00:22:17, John Merlino wrote:

>On May 21, 2005 at 22:30:47, Vladimir Xern wrote:
>
>>According to SlowChess Blitz WV after a longer think, it's a mate in 9 beginning
>>with Rxf6.  Note that the following is on my 1.4 GHz Athlon. How long for The
>>King to find the shorter mate?
>>
>>SlowChess Blitz WV  (94 MB hash)
>>FEN: r4k2/pp1q1p1p/5r1N/2pp2Q1/8/1P1PP3/P2P2P1/5RK1 w - -
>>
>>[16] M9     04:58.5	Rxf6 Ke8 Nf5 Qc7 Qg8+ Kd7 Qxf7+ Kc8 Ne7+ Kd8 Qg8+ Kd7 Qe6+
>>Ke8 Nxd5+ Kd8 #mate1
>>[15] M9     04:21.8	Rxf6 Ke8 Nf5 Qc7 Qg8+ Kd7 Qxf7+ Kc8 Ne7+ Kd8 Qg8+ Kd7 Qe6+
>>Ke8 Nxd5+ Kd8 #mate1
>>[15] M10    03:47.8	Rxf6 {++}
>>[15] M10    01:19.7	Qxf6 Ke8 Qh8+ Ke7 Qe5+ Kf8 Rf5 Rc8 Qh8+ Ke7 Qf6+ Ke8 Re5+
>>Qe6 Qxf7+ Kd8 Rxe6 a6 #mate1
>>[14] M10    00:45.2	Qxf6 Ke8 Qh8+ Ke7 Qe5+ Kf8 Rf5 Rc8 Qh8+ Ke7 Qf6+ Ke8 Re5+
>>Qe6 Qxf7+ Kd8 Rxe6 a6 #mate1
>>[13] M10    00:24.2	Qxf6 Ke8 Qh8+ Ke7 Qe5+ Kf8 Rf5 Rc8 Qh8+ Ke7 Qf6+ Ke8 Re5+
>>Qe6 Qxf7+ Kd8 Rxe6 a6 #mate1
>>[12] M13    00:11.3	Qxf6 Ke8 Qh8+ Ke7 Qe5+ Kf8 Nf5 f6 Qxf6+ Qf7 Qh8+ Qg8 Nh6+
>>Ke7 Nxg8+ Rxg8 Qxg8 c4 Qxd5 Ke8 Qe6+ Kd8 Rf8+ Kc7 Rc8+ #mate
>>[11] M15    00:05.4	Qxf6 Ke8 Qh8+ Ke7 Qe5+ Kf8 Nf5 f6 Qxf6+ Qf7 Qh8+ Qg8 Nh6+
>>Ke7 Nxg8+ Rxg8 Qxg8 c4 Qg7+ Kd6 Rf6+ Kc5 Qe7+ Kb5 a4+ Ka5 <tt>
>>[10] 20.04  00:03.1	Qxf6 Ke8 Qh8+ Ke7 Qe5+ Kf8 Nf5 f6 Qxf6+ Qf7 Qh8+ Qg8 Nh6+
>>Ke7 Nxg8+ Rxg8 Qxh7+ Rg7 Qxg7+ Kd6 Qxb7
>>[9]  17.32  00:01.6	Qxf6 Ke8 Qh8+ Ke7 Rxf7+ Kd6 Qxa8 Qxf7 Nxf7+ Ke6 Nd8+ Ke5
>>Nxb7 h5 Nxc5
>>[8]  16.24  00:00.6	Qxf6 Ke8 Qh8+ Ke7 Rxf7+ Kd6 Qxa8 Qxf7 Nxf7+ Ke6 Qxb7 a6
>>[7]  16.24  00:00.4	Qxf6 Ke8 Qh8+ Ke7 Rxf7+ Kd6 Qxa8 Qxf7 Nxf7+ Ke6 Qxb7
>>[6]  13.76  00:00.0	Qxf6 Rc8 Nf5 Qxf5 Rxf5 Kg8 Qxf7+ Kh8 Qxd5
>>[5]  13.76  00:00.0	Qxf6 Rc8 Nf5 Qxf5 Rxf5 Kg8 Qxf7+ Kh8 Qxd5
>>[5]  10.12  00:00.0	Qxf6 {++}
>>[5]  10.12  00:00.0	Rxf6 Qe8 Qf5 Kg7 Rxf7+ Qxf7 Nxf7
>>[4]  8.92   00:00.0	Rxf6 Qe8 Rxf7+ Qxf7 Nxf7 Kxf7 Qxd5+ Kf6 Qxb7
>>[3]  8.88   00:00.0	Rxf6 Re8 Rxf7+ Qxf7 Nxf7 Kxf7 Qxd5+ Kf6 Qxb7
>>[3]  8.16   00:00.0	Qxf6 Qe8 Qh8+ Ke7 Qe5+ Kd8 Nxf7+ Kd7 Qxd5+ Kc7 Qxc5+ Kb8
>>[2]  6.32   00:00.0	Qxf6 Ke8 Nxf7
>
>The King (CM9_R1) confirms the mate in 9 in just under two minutes on a P4-2.4:
>
>Time	Depth	Score	Positions	Moves
>0:00	1/4	11.61	6906		1.Rxf6 Qe8 2.Rxf7+ Qxf7 3.Nxf7
>					Kxf7 4.Qxd5+ Kf6 5.Qxb7
>0:00	1/4	13.66	10295		1.Qxf6 Rc8 2.Nf5 Qxf5 3.Rxf5
>0:00	1/5	17.37	14908		1.Qxf6 Ke8 2.Qh8+ Ke7 3.Rxf7+ Kd6
>					4.Rxd7+ Kxd7 5.Qxa8
>0:00	1/6	18.77	62023		1.Qxf6 Ke8 2.Qh8+ Ke7 3.Rxf7+ Kd6
>					4.Qxa8 Qxf7 5.Nxf7+ Kc6 6.Qxa7
>0:00	1/7	19.21	85502		1.Qxf6 Ke8 2.Qh8+ Ke7 3.Rxf7+ Kd6
>					4.Qxa8 Qxf7 5.Nxf7+ Ke6 6.Qxb7 a6
>0:00	1/8	19.55	151793		1.Qxf6 Ke8 2.Qh8+ Ke7 3.Rxf7+ Kd6
>					4.Qxa8 Qxf7 5.Nxf7+ Kc6 6.Qc8+
>					Kb6 7.Nd6 c4 8.dxc4
>0:03	2/9	23.14	754704		1.Qxf6 Ke8 2.Qh8+ Ke7 3.Qe5+ Kf8
>					4.Nf5 f6 5.Qxf6+ Qf7 6.Qh8+ Qg8
>					7.Nh6+ Ke7 8.Nxg8+ Rxg8 9.Qxh7+
>					Kd8 10.Qxg8+ Kc7 11.Qxd5
>0:06	2/10	23.14	1617047		1.Qxf6 Ke8 2.Qh8+ Ke7 3.Qe5+ Kf8
>					4.Nf5 f6 5.Qxf6+ Qf7 6.Qh8+ Qg8
>					7.Nh6+ Ke7 8.Nxg8+ Rxg8 9.Qxh7+
>					Kd8 10.Qxg8+ Kc7 11.Qxd5
>0:18	2/11	Mate10	5437704		1.Qxf6 Ke8 2.Qh8+ Ke7 3.Qe5+ Kf8
>					4.Rf5 a5 5.Qh8+ Ke7 6.Qf6+ Ke8
>					7.Re5+ Qe6 8.Qxf7+ Kd8 9.Rxe6 Kc8
>					10.Re8#
>0:33	3/12	Mate10	10146584	1.Qxf6 Ke8 2.Qh8+ Ke7 3.Qe5+ Kf8
>					4.Rf5 a5 5.Qh8+ Ke7 6.Qf6+ Ke8
>					7.Re5+ Qe6 8.Qxf7+ Kd8 9.Rxe6 Kc8
>					10.Re8#
>1:10	3/13	Mate10	23068150	1.Qxf6 Ke8 2.Qh8+ Ke7 3.Qe5+ Kf8
>					4.Rf5 a5 5.Qh8+ Ke7 6.Qf6+ Ke8
>					7.Re5+ Qe6 8.Qxf7+ Kd8 9.Rxe6 Kc8
>					10.Re8#
>1:58	3/13	Mate09	38887301	1.Rxf6 Ke8 2.Nf5 Qd8 3.Qg8+ Kd7
>					4.Qxf7+ Kc8 5.Nd6+ Qxd6 6.Rxd6
>					a6 7.Qd7+ Kb8 8.Rb6 Ka7 9.Qxb7#
>
>jm

Thanks to all..

Mate in 9...very good!

So the best first mmove is....Rxf6....!

Rob



This page took 0 seconds to execute

Last modified: Thu, 15 Apr 21 08:11:13 -0700

Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.