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Subject: Re: Nice sacrifice by Shredder 9!

Author: John Merlino

Date: 11:13:00 03/25/05

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On March 25, 2005 at 06:55:09, Martin Baumung wrote:

>Hi,
>
>in another game between Shredder 9 and Gandalf 6.01 the following position came
>up:
>
>[D]r1b1r1k1/1pn1qnbp/3p1pp1/pPp5/2PNPPP1/P1N1B1R1/3QB2P/3R3K w - - 0 21
>
>Shredder played 21.Nf5! here with a rather convincing score of +2.47. Finding
>the move after just 2 seconds (!).
>
>Any other engine going for this sacrifice?

CM9_R1 on an AMD 2500 needs 1:47 to find Nf5, but it then gives it up just
before the five minute mark. So, depending on time control and hardware, it
MIGHT play it:

Time	Depth	Score	Positions	Moves
0:00	1/3	0.69	1575		21.Nf3 b6 22.f5 Bb7
0:00	1/4	0.69	3584		21.Nf3 b6 22.f5 Bb7
0:00	1/5	0.12	13295		21.Nf3 f5 22.gxf5 Bxf5 23.exf5 Bxc3
0:00	1/5	0.30	16901		21.Nc2 b6 22.Bf2 Bb7 23.Ne3 Bxe4+
					24.Nxe4 Qxe4+ 25.Rf3
0:00	1/5	0.32	19232		21.Nb3 a4 22.Nc1 f5 23.exf5 gxf5
0:00	1/6	0.33	30527		21.Nb3 a4 22.Nc1 f5 23.exf5 gxf5
					24.Re1 fxg4 25.Bxg4 Bxg4 26.Rxg4
0:00	1/6	0.46	39299		21.Nc2 b6 22.Bf3 Be6 23.Qd3 Reb8
					24.Na4
0:01	1/7	0.40	75701		21.Nc2 b6 22.Bf3 Bb7 23.Bf2 Bh6
					24.Bg2 Ne5
0:02	1/7	0.52	103369		21.Nf3 b6 22.f5 Bb7 23.Bd3 Ne5
					24.Nxe5 Qxe5
0:03	1/8	0.63	230149		21.Nf3 b6 22.f5 Bb7 23.Bd3 Rad8
					24.Bc2 Ne5 25.Nxe5 dxe5
0:05	1/9	0.32	655765		21.Nf3 f5 22.gxf5 Bxf5 23.exf5
					Qxe3 24.fxg6 hxg6 25.Ng5 Qxd2 26.Rxd2
					Nxg5 27.fxg5
0:07	1/9	0.48	1004319		21.Nc2 b6 22.Bf3 Bb7 23.Bg2 Bh6
					24.Ne1 a4 25.Qc2 Ne6
0:11	1/10	0.53	1799366		21.Nc2 b6 22.Bf3 Bb7 23.Bg2 Qe6
					24.Qd3 Qe7 25.Bf2 Ne6 26.Qd2
0:24	1/11	0.47	4481605		21.Nc2 b6 22.Bf3 Bb7 23.Kg1 Bh6
					24.Bg2 Ne6 25.Nd5 Bxd5 26.exd5
1:14	1/12	0.53	14638833	21.Nc2 b6 22.Bf3 g5 23.Kg1 Rb8
					24.Bg2 Be6 25.Nd5 Nxd5 26.exd5
					Bd7 27.a4
1:47	1/12	0.71	21860623	21.Nf5 gxf5 22.gxf5 Kh8 23.b6 Na6
					24.Bf3 Qd7 25.Nd5 Nh6 26.Qxa5 Nc7
2:09	1/13	0.50	27331622	21.Nf5 gxf5 22.gxf5 Kh8 23.b6 Na6
					24.Bh5 Rg8 25.Qc2 Bd7 26.Nd5 Qe8
					27.Bf2 Ba4
4:46	1/13	0.56	60086189	21.Nf3 f5 22.gxf5 Bxf5 23.exf5
					Qxe3 24.fxg6 hxg6 25.Nh4 Qf2 26.Qc2
					g5 27.Nf5 Qxf4 28.Nxg7 Kxg7

jm



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