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Subject: Re: Nice sacrifice by Shredder 9!

Author: John Merlino

Date: 09:24:33 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?

CMX Yoda v2.5 on a P4-2.4 doesn't see this sacrifice in under three minutes. But
it DOES see this one later on:

[D]r3r2k/1pN4p/1Pbp3n/2p2p2/1pPb1P2/3Q3R/3B3P/3R2K1 w - - 0 35

35.Qxd4+! cxd4 36.Nxe8 Rxe8 37.Rxh6 giving away QN for RBN and a great deal of
simplification (and the eventual picking off of at least one of Black's horrible
pawns).

Time	Depth	Score	Positions	Moves
0:00	1/5	5.50	10248		35.Kf1 Ra3 36.Qxa3 bxa3 37.Nxe8 Nf7
0:00	1/6	5.60	33474		35.Kf1 Ra3 36.Qxa3 bxa3 37.Nxe8
					Bxe8 38.Rxh6 Bf7
0:00	1/7	5.36	78196		35.Kf1 Ra3 36.Qxa3 bxa3 37.Nxe8
					Bxe8 38.Rxh6 a2 39.Re6 Bc6
0:00	1/8	3.64	144501		35.Kf1 Ra3 36.Nxe8 Rxd3 37.Rxd3
					Bxe8 38.Bxb4 Ng4 39.R3d2
0:00	1/8	4.54	170875		35.Qxd4+ cxd4 36.Nxe8 Rxe8 37.Rxh6
					Rg8+ 38.Kf1 b3 39.Rxd6 Bf3
0:01	1/9	4.52	217234		35.Qxd4+ cxd4 36.Nxe8 Rxe8 37.Rxh6
					Rg8+ 38.Kf1 b3 39.Rxd6 Bf3 40.Re1
0:01	1/10	4.38	387777		35.Qxd4+ cxd4 36.Nxe8 Rxe8 37.Rxh6
					b3 38.Kf2 Rg8 39.Rxd6 b2 40.Rxd4
					Rg2+ 41.Ke3 Rxh2
0:04	1/11	4.88	876191		35.Qxd4+ cxd4 36.Nxe8 Rxe8 37.Rxh6
					Bf3 38.Rb1 Re2 39.Bxb4 Rg2+ 40.Kf1
					Kg7 41.Rh3
0:08	2/12	4.81	1829581		35.Qxd4+ cxd4 36.Nxe8 Rxe8 37.Rxh6
					Rg8+ 38.Kf1 b3 39.Rxd6 Bg2+ 40.Ke2
					Be4 41.Rxd4 Rg2+ 42.Ke3 Rxh2 43.Rd8+
					Kg7
0:18	2/13	4.81	3873435		35.Qxd4+ cxd4 36.Nxe8 Rxe8 37.Rxh6
					Rg8+ 38.Kf1 b3 39.Rxd6 Bg2+ 40.Ke2
					Be4 41.Rxd4 Rg2+ 42.Ke3 Rxh2 43.Rd8+
					Kg7
0:41	2/14	4.86	9167197		35.Qxd4+ cxd4 36.Nxe8 Rxe8 37.Rxh6
					Rg8+ 38.Kf1 Bf3 39.Re1 b3 40.Rb1
					Re8 41.Rxd6 Be2+ 42.Kf2 Bxc4 43.Rxd4
2:05	3/15	5.14	27560821	35.Qxd4+ cxd4 36.Nxe8 Rxe8 37.Rxh6
					Rg8+ 38.Kf1 Bf3 39.Rb1 Bg2+ 40.Ke2
					Be4 41.Rxb4 Rg2+ 42.Kd1 Bf3+ 43.Kc1
					Rg1+ 44.Kc2 Be4+ 45.Kb3 Rg2

jm



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