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Subject: Re: Mate in 16

Author: John Merlino

Date: 15:20:23 01/08/02

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On January 07, 2002 at 11:33:04, José Antônio Fabiano Mendes wrote:

>       Mate in 16
>       [D]7k/5Pp1/6P1/8/8/RPr4K/2PPPPP1/8 w
>        Source: http://www.chez.com/pcanteau/mate16m.htm

CM8000 says Mate in 18 in five seconds on my PIII-600:

Time	Depth	Score	Positions	Moves
0:00	1/3	7.15	1010		1.Kg4 Rc4+ 2.Kg5 Rc5+ 3.Kf4
0:00	2/4	7.04	6247		1.Kg4 Rc4+ 2.Kg5 Rc5+ 3.Kf4 Rf5+
					4.Ke4 Re5+ 5.Kd3 Rd5+ 6.Kc4 Rc5+
					7.Kd4
0:00	3/5	6.28	28165		1.Kg4 Rc4+ 2.Kf5 Rc5+ 3.Ke6 Re5+
					4.Kd7 Rd5+ 5.Kc6 Rd6+ 6.Kc5 Rc6+
					7.Kd4 Rd6+ 8.Ke5 Re6+ 9.Kd5 Rd6+
					10.Kc4 Rc6+ 11.Kb5
0:01	4/6	5.60	85060		1.Kg4 Rc4+ 2.Kf5 Rc5+ 3.Ke6 Re5+
					4.Kd7 Rd5+ 5.Kc6 Rd6+ 6.Kc5 Rc6+
					7.Kd4 Rd6+ 8.Ke5 Re6+ 9.Kd5 Rd6+
					10.Kc4 Rc6+ 11.Kd3 Rd6+ 12.Kc3
					Rc6+ 13.Kb4 Rc4+ 14.Kb5 Rc5+ 15.Kb6

0:03	5/7	4.92	245392		1.Kg4 Rc4+ 2.Kf5 Rc5+ 3.Ke6 Re5+
					4.Kd7 Rd5+ 5.Kc6 Rd6+ 6.Kc5 Rc6+
					7.Kd4 Rd6+ 8.Ke5 Re6+ 9.Kd5 Rd6+
					10.Kc4 Rc6+ 11.Kd3 Rd6+ 12.Kc3
					Rc6+ 13.Kb4 Rc4+ 14.Kb5 Rc5+ 15.Kb6
					Rc6+ 16.Ka5
0:03	5/7	5.67	264291		1.d3 Rxd3+ 2.f3 Rxf3+ 3.Kh2 Rh3+
					4.Kg1 Rh1+ 5.Kf2 Rf1+ 6.Ke3 Rf3+
					7.Kd2 Rd3+ 8.Kc1 Rd8 9.b4 Rd1+
					10.Kb2 Rb1+ 11.Kc3
0:05	6/8	Mate18	498047		1.d3 Rxd3+ 2.f3 Rxf3+ 3.Kh2 Rh3+
					4.Kg1 Rh1+ 5.Kf2 Rf1+ 6.Ke3 Rf3+
					7.Kd2 Rd3+ 8.Kc1 Rd8 9.b4 Rd1+
					10.Kb2 Rb1+ 11.Kc3 Rb3+ 12.Kd2
					Rd3+ 13.Ke1 Rd1+ 14.Kf2 Rf1+ 15.Kg3
					Rf3+ 16.Kh2
0:07	7/9	Mate18	656979		1.d3 Rxd3+ 2.f3 Rxf3+ 3.Kh2 Rh3+
					4.Kg1 Rh1+ 5.Kf2 Rf1+ 6.Ke3 Rf3+
					7.Kd2 Rd3+ 8.Kc1 Rd8 9.b4 Rd1+
					10.Kb2 Rb1+ 11.Kc3 Rb3+ 12.Kd2
					Rd3+ 13.Ke1 Rd1+ 14.Kf2 Rf1+ 15.Kg3
					Rf3+ 16.Kh2
0:24	8/10	Mate18	2671796		1.d3 Rxd3+ 2.f3 Rxf3+ 3.Kh2 Rh3+
					4.Kg1 Rh1+ 5.Kf2 Rf1+ 6.Ke3 Rf3+
					7.Kd2 Rd3+ 8.Kc1 Rd8 9.b4 Rd1+
					10.Kb2 Rb1+ 11.Kc3 Rb3+ 12.Kd2
					Rd3+ 13.Ke1 Rd1+ 14.Kf2 Rf1+ 15.Kg3
					Rf3+ 16.Kh2

jm



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