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Subject: Re: Rook ending === Reti study [test position]

Author: John Merlino

Date: 12:21:54 05/24/02

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On May 24, 2002 at 09:05:48, José Antônio Fabiano Mendes wrote:

>      Rook ending by GM Richard Reti === test position
>      [D]5r2/8/5p1p/5Kpk/3R4/3p4/P5P1/8 w
>      Source ==> http://www.chessbaseusa.com/NY1924/nyzoo.htm
> 1. g3 Rg8 2. Rb4!! g4! 3. Rb1 Rg5+ 4. Kxf6 Rg6+ 5. Kf7 d2 6. a4! d1Q!
> 7. Rxd1 Rf6+ 8. Kg7 Rf5! 9. Rb1 Kg5 10. Rb6!! Re5 11. Rb5

Chessmaster 9000 (Beta) finds g3 in three seconds (on a PIII-600), and shows the
first eight moves of the line in 13 seconds (when the PV gets longer on the next
depth, after 33 seconds, CM differs on the ninth move, choosing 9.Rh1+):

Time	Depth	Score	Positions	Moves
0:00	2/3	-0.14	277		1.Rxd3 g4 2.a4 Ra8
0:00	3/4	-0.13	1272		1.Rxd3 g4 2.a4 Ra8 3.Ra3
0:00	4/5	0.03	4185		1.Rxd3 g4 2.Rd1 Kh4 3.Rh1+ Kg3
					4.Rxh6 Kxg2 5.Kxg4
0:00	5/6	0.27	14630		1.Rxd3 g4 2.a4 Ra8 3.Ra3 Ra5+ 4.Kxf6
0:00	6/7	0.30	32885		1.Rxd3 g4 2.a4 Ra8 3.Ra3 Ra6 4.a5
0:01	7/8	0.22	83742		1.Rxd3 g4 2.a4 Ra8 3.Ra3 Ra5+ 4.Kxf6
					g3 5.Kg7
0:02	8/9	0.21	215348		1.Rxd3 g4 2.Rd1 Kh4 3.Kf4 Kh5 4.Rd5+
					Kg6 5.Kxg4 Ra8
0:03	8/9	0.24	375880		1.g3 Rg8 2.a4 Rg7 3.Rxd3 Ra7 4.Rd4
					g4 5.Kxf6
0:05	9/10	0.49	601830		1.g3 Rg8 2.Rb4 g4 3.Rb1 Rg5+ 4.Kxf6
					Rg6+ 5.Kf7 d2 6.a4 d1=Q 7.Rxd1
0:13	10/11	0.41	1468751		1.g3 Rg8 2.Rb4 g4 3.Rb1 Rg5+ 4.Kxf6
					Rg6+ 5.Kf7 d2 6.a4 d1=Q 7.Rxd1
					Rf6+ 8.Kg7
0:33	11/12	0.62	3742714		1.g3 Rg8 2.Re4 g4 3.Re1 Rg5+ 4.Kxf6
					Rg6+ 5.Kf7 d2 6.Rb1 d1=Q 7.Rxd1
					Rf6+ 8.Kg7 Rf5 9.Rh1+ Kg5 10.Rxh6
1:19	12/13	0.84	8887996		1.g3 Rg8 2.Rb4 g4 3.Rb1 Rg5+ 4.Kxf6
					Rg6+ 5.Kf7 d2 6.a4 d1=Q 7.Rxd1
					Rf6+ 8.Kg7 Rf5 9.Rh1+ Kg5 10.Rxh6
					Ra5
3:26	13/14	0.70	23788948	1.g3 Rg8 2.Rb4 g4 3.Rb1 Rg5+ 4.Kxf6
					Rg6+ 5.Kf7 d2 6.a4 d1=Q 7.Rxd1
					Rf6+ 8.Kg7 Rf5 9.Rh1+ Kg5 10.Rxh6
					Ra5 11.Rg6+ Kf5

jm



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