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Subject: Re: Nice sacrifice by Shredder 9!

Author: Martin Baumung

Date: 12:01:45 03/25/05

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On March 25, 2005 at 14:13:00, John Merlino wrote:

>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:
>

CM9 with the SKR setting will find it after 3:49 on a P4M 2GHz and keeps it,

FEN: r1b1r1k1/1pn1qnbp/3p1pp1/pPp5/2PNPPP1/P1N1B1R1/3QB2P/3R3K w - - 0 21

The King 3.23 SKR:
   3	00:00	       1.358	45.266	+0,54	21.Sd4f3 b7b6 22.f4f5 Lc8b7
   4	00:00	       3.518	50.257	+0,54	21.Sd4f3 b7b6 22.f4f5 Lc8b7
   5	00:00	      11.884	62.547	+0,23	21.Sd4f3 f6f5 22.g4xf5 Lc8xf5 23.e4xf5
   5	00:00	      16.411	54.703	+0,37	21.Sd4c2 b7b6 22.f4f5 Lc8b7 23.Le3f4
   6	00:00	      26.476	67.887	+0,28	21.Sd4c2 b7b6 22.f4f5 Lc8b7 23.Le3f4
   7	00:00	      84.016	91.321	+0,32	21.Sd4c2 b7b6 22.Le2f3 Lc8b7 23.Le3f2
   7	00:01	     111.961	94.882	+0,45	21.Sd4f3 b7b6 22.f4f5 Lc8b7 23.Le2d3
   8	00:01	     208.231	103.597	+0,49	21.Sd4f3 b7b6 22.f4f5 Lc8b7 23.Le2d3
   9	00:05	     624.628	119.431	+0,29	21.Sd4f3 f6f5 22.g4xf5 Lc8xf5 23.e4xf5
   9	00:08	     991.322	116.352	+0,38	21.Sd4c2 b7b6 22.Le2f3 Lc8b7 23.Lf3g2
  10	00:15	   1.821.485	120.388	+0,44	21.Sd4c2 b7b6 22.Le2f3 Lc8b7 23.Lf3g2
  11	00:46	   5.451.903	117.929	+0,38	21.Sd4c2 b7b6 22.Le2f3 Ta8b8 23.Lf3g2
  12	02:12	  14.918.571	112.482	+0,38	21.Sd4c2 b7b6 22.Le2f3 g6g5 23.Sc2e1
  12	03:49	  26.183.867	114.449	+0,58	21.Sd4f5 g6xf5 22.g4xf5 Kg8h8 23.b5b6
  13	04:27	  31.303.513	117.193	+0,38	21.Sd4f5 g6xf5 22.g4xf5 Kg8h8 23.b5b6
  14	08:27	  62.275.439	122.601	+0,50	21.Sd4f5 g6xf5 22.g4xf5 Kg8h8 23.b5b6
  15	15:16	 118.758.505	129.609	+0,61	21.Sd4f5 g6xf5 22.g4xf5 Kg8h8 23.b5b6




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