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Subject: Re: Test position

Author: John Merlino

Date: 08:35:01 03/17/05

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On March 17, 2005 at 10:03:41, Mihaly Szalai wrote:

>
>[D]5kN1/3p1q2/5P2/5PP1/2pK4/1p1R4/1P6/8 w - - 0 1
>
>1. Rxb3! cxb3 2. g6 Qxg8 3. Kc5! (Black queen cannot move) d6+ 4. Kd4 d5 5. Kc5
>d4 6. Kxd4 +-
>
>Mihaly

CM9 Yoda v25 on a P4-2.4 finds the move in just over four minutes:

Time	Depth	Score	Positions	Moves
0:00	2/7	-1.70	35404		1.Re3 Kxg8 2.Re7 Qh5 3.Rg7+ Kf8
					4.Kxc4 Qg4+ 5.Kxb3 Qxf5
0:00	2/8	-1.70	61583		1.Re3 Kxg8 2.Re7 Qh5 3.Rg7+ Kf8
					4.Kxc4 Qg4+ 5.Kxb3 Qxf5
0:00	2/9	-1.81	104807		1.Re3 Kxg8 2.Re7 Qh5 3.Rg7+ Kf8
					4.Kxc4 Qf3 5.Kb4 Qxf5 6.Kxb3
0:01	3/10	-1.66	239821		1.Re3 Kxg8 2.Re7 Qh5 3.Kxc4 Qg4+
					4.Kxb3 Qf3+ 5.Kb4 Qxf5 6.Rg7+ Kf8
					7.Kc4
0:04	3/11	-1.44	801130		1.Re3 Kxg8 2.Re7 Qh5 3.g6 Qh4+
					4.Ke5 Qg3+ 5.Kd5 Qd3+ 6.Ke5 Qe2+
					7.Kd5 Qf3+ 8.Kxc4 Qc6+ 9.Kxb3 Qxf6
0:08	3/12	-1.65	1748817		1.Re3 Kxg8 2.Re7 Qh5 3.Kxc4 Qg4+
					4.Kxb3 Qxf5 5.Rg7+ Kf8 6.Kc4 Qe4+
					7.Kc5 Qe5+ 8.Kc4 Qd6
0:22	4/13	-1.48	4773648		1.Re3 Kxg8 2.Re7 Qh5 3.g6 Qh4+
					4.Ke5 Qg3+ 5.Kd5 Qg2+ 6.Kxc4 Qc6+
					7.Kxb3 Qxf6 8.Rf7 Qb6+ 9.Kc4 Qd6
0:57	5/14	-1.65	12291069	1.Re3 Kxg8 2.Re7 Qh5 3.g6 Qh4+
					4.Ke5 Qg3+ 5.Kd5 Qg2+ 6.Kxc4 Qc6+
					7.Kxb3 Qxf6 8.Rf7 Qd4 9.Ka2 Qd5+
					10.b3
2:04	6/15	-1.65	27443782	1.Re3 Kxg8 2.Re7 Qh5 3.g6 Qh4+
					4.Ke5 Qg3+ 5.Kd5 Qg2+ 6.Kxc4 Qc6+
					7.Kxb3 Qb6+ 8.Ka3 Qxf6 9.Rf7 Qd4
					10.Ka2 Qd5+ 11.b3
4:04	6/15	0.16	54314349	1.Rxb3 cxb3 2.g6 Qxg8 3.Kc5 Ke8
					4.f7+ Qxf7 5.gxf7+ Kxf7 6.Kd4 Kf6
					7.Ke4 Kf7 8.Ke5 Ke7 9.f6+ Kf7 10.Kf5
					d6 11.Kg5
4:29	7/16	0.09	59962958	1.Rxb3 cxb3 2.g6 Qxg8 3.Kc5 Ke8
					4.f7+ Qxf7 5.gxf7+ Kxf7 6.Kb4 Kf6
					7.Kxb3 Kxf5 8.Kc3 Ke4 9.b4 d5 10.b5
					d4+ 11.Kc4 Ke5

jm



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