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Subject: Re: For Rybka - Testposition with mate

Author: John Merlino

Date: 13:12:44 01/24/06

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On January 24, 2006 at 06:35:19, Eduard Nemeth wrote:

>Composition by Eduard Nemeth, 2002:
>
>[D]K1N/1pp2P1P/5kPn/5n2/8/P7/1P6/8 b - - 0 1
>
>Analysis by Shredder 7.04:
>
>1...Sg7 2.a4 c5 3.b3 b6 4.a5 bxa5 5.b4 c4 6.b5 c3 7.b6 c2 8.b7 c1D 9.b8D+
>  -+  (-#10)   Tiefe: 15/23   00:00:07  777kN
>
>(Nemeth, Privat 24.01.2006)
>
>Shredder 704 say a mate in 10 moves.
>
>What say Rybka (or other programs too, my Fritz 8 say soon a mate in 11)?

CM9_R1 on an AMD 2500 needs 0:26 to announce Mate in 10:

Time	Depth	Score	Positions	Moves
0:00	1/4	2.43	706		1...Ng7 2.b3 Ne6+ 3.Ke8 Kg7 4.Ke7
0:00	1/5	2.50	2895		1...Ng7 2.b3 Ne6+ 3.Ke8 Kg7 4.Ke7
					Nf8
0:00	1/6	2.17	5618		1...Ng7 2.b4 Ne6+ 3.Ke8 Kg7 4.Ke7
					Nf8 5.a4 Nf5+ 6.Ke8
0:00	1/7	1.98	20549		1...Ng7 2.b4 Ne6+ 3.Ke8 Kg7 4.a4
					Kxh8 5.f8=Q+ Nxf8 6.Kxf8 Nf5
0:00	1/8	1.98	33299		1...Ng7 2.b4 Ne6+ 3.Ke8 Kg7 4.a4
					Nf5 5.Kd7 Nfd4 6.Ke7 Kxh8 7.f8=Q+
					Nxf8 8.Kxf8
0:00	2/9	1.98	42890		1...Ng7 2.b4 Ne6+ 3.Ke8 Kg7 4.a4
					Nf5 5.Kd7 Nfd4 6.Ke7 Kxh8 7.f8=Q+
					Nxf8 8.Kxf8
0:00	3/10	1.98	89314		1...Ng7 2.b4 Ne6+ 3.Ke8 Kg7 4.a4
					Nf5 5.Kd7 Nfd4 6.Ke7 Kxh8 7.f8=Q+
					Nxf8 8.Kxf8
0:01	4/11	1.54	330367		1...Ng7 2.a4 Ne6+ 3.Ke8 Kg7 4.b4
					Nf8 5.b5 Nf5 6.Kd8 c5 7.bxc6ep
					bxc6 8.Ke8
0:01	5/12	1.08	636315		1...Ng7 2.a4 Ne6+ 3.Ke8 Kg7 4.a5
					Nf5 5.Kd7 Nf8+ 6.Kxc7 Kxh8 7.b3
					Nxg6 8.b4 b6 9.axb6 Kxh7
0:04	6/13	0.17	1519364		1...Ng7 2.a4 Ne6+ 3.Ke8 Kg7 4.a5
					c6 5.Ke7 Nf8 6.b4 Nf5+ 7.Kd8 Kxh8
					8.Kc7 Nxg6 9.Kxb7 Nd6+ 10.Kxc6 Nxf7
0:09	7/14	0.17	3410055		1...Ng7 2.a4 Ne6+ 3.Ke8 Kg7 4.a5
					Nf8 5.b4 c6 6.Ke7 Nf5+ 7.Kd8 Kxh8
					8.Kc7 Nxg6 9.Kxb7 Nd6+ 10.Kxc6 Nxf7
0:26	8/15	-Mate10	9854411		1...Ng7 2.a4 c5 3.b3 b6 4.a5 bxa5
					5.b4 c4 6.b5 c3 7.b6 c2 8.b7 c1=Q
					9.b8=Q Ne6+ 10.Ke8 Qc6#
0:41	9/16	-Mate10	16517694	1...Ng7 2.a4 c5 3.b3 b6 4.a5 bxa5
					5.b4 c4 6.b5 c3 7.b6 c2 8.b7 c1=Q
					9.b8=Q Ne6+ 10.Ke8 Qc6#

jm



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