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Subject: Re: WAC surprise

Author: John Merlino

Date: 11:03:47 04/21/05

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On April 21, 2005 at 13:30:46, Dann Corbit wrote:

>76) Qxh7+; id "WAC.185"
>    Searching move: Qh5xh7
>    Best move (Shredder 7.04 UCI): Nh4-g6
>    Not found in: 10:00
>     2/4	00:00	         143	0	-2.31	Qh5g4 Be8d7
>     3/8	00:00	         612	0	-2.23	Qh5g4 Kg8h8 Rh3g3
>     4/9+	00:00	       2.324	0	-1.98	Qh5g4 Kg8h8 Nh4g6+ Be8xg6 f5xg6 Qd6e6
>     4/10	00:00	       3.163	0	-1.92	Qh5g4 a6a5 Bc1h6 Qd6e7
>     5/15	00:00	       6.804	453.600	-2.06	Qh5g4 a6a5 Bc1h6 Qd6d7 Rh3g3
>     5/15+	00:00	       7.980	532.000	-2.05	Nh4g6 Be8xg6 f5xg6 Qd6e6
>     5/15+	00:00	       8.475	565.000	-1.70	Nh4g6 Be8xg6 f5xg6 Bd4c3
>     5/18	00:00	       9.615	641.000	-1.47	Nh4g6 Be8xg6 f5xg6 h7h6 Qh5f5 Kg8h8
>     6/16+	00:00	      20.144	649.806	-1.22	Nh4g6 Be8xg6 f5xg6 h7xg6 Qh5xg6
>Qd6c5 Bc1h6 Rd8xd5 Bb3xd5+ Qc5xd5
>     6/16	00:00	      21.984	477.913	-1.19	Nh4g6 Be8xg6 f5xg6 h7h6 Bc1xh6 Bd4xb2
>Bh6d2 Kg8f8
>     7/16+	00:00	      35.850	459.615	-0.94	Nh4g6 Be8xg6 f5xg6 h7h6 Bc1xh6 Qd6d7
>Bh6d2 Bd4xb2 Qh5h8+
>     7/17	00:00	      45.803	492.505	-0.80	Nh4g6 h7h6 Bc1xh6 g7xh6 Qh5xh6 Rd8d7
>Qh6h8+ Kg8f7
>     7/17+	00:00	      49.006	526.946	-0.76	Qh5xh7+ Kg8f8
>     7/17+	00:00	      50.005	537.688	-0.41	Qh5xh7+ Kg8f8 Nh4g6+ Be8xg6 Qh7xg6
>Qd6xd5 Bb3xd5
>     7/22	00:00	     103.498	553.465	+5.86	Qh5xh7+ Kg8f8 Qh7h8+ Kf8e7 Qh8xg7+
>Be8f7 Nh4g6+ Ke7d7 Qg7xf7+ Kd7c8 Ng6e7+ Kc8b7 Ne7c6 Rd8d7
>     8/25	00:00	     173.336	585.594	+5.86	Qh5xh7+ Kg8f8 Qh7h8+ Kf8e7 Qh8xg7+
>Be8f7 Nh4g6+ Ke7d7 Qg7xf7+ Kd7c8 Bb3c4 Kc8b7 Rh3h7 Rb8c8 Ng6e7
>     9/28	00:00	     333.155	610.173	+5.94	Qh5xh7+ Kg8f8 Qh7h8+ Kf8e7 Qh8xg7+
>Be8f7 Nh4g6+ Ke7d7 Qg7xf7+ Kd7c8 Bb3c4 Kc8b7 Rh3h7 Rd8g8 b2b3 Rb8c8
>    10/29+	00:01	     583.601	612.383	+6.19	Qh5xh7+ Kg8f8 Qh7h8+ Kf8e7 Qh8xg7+
>Be8f7 Nh4g6+ Ke7d7 Qg7xf7+ Kd7c8 Ng6e7+ Kc8b7 Ne7c6 Rd8f8 Qf7e6 Rf8g8 Nc6xb8
>Kb7xb8
>    10/29	00:01	     802.883	611.953	+6.49	Qh5xh7+ Kg8f8 Qh7h8+ Kf8e7 Qh8xg7+
>Be8f7 Nh4g6+ Ke7d7 Qg7xf7+ Kd7c8 Ng6e7+ Kc8b7 Ne7c6 Rd8d7 Qf7e6 Rb8a8 Qe6xd6
>Rd7xd6 Nc6xb4
>    11/30	00:03	   1.745.154	617.098	+6.50	Qh5xh7+ Kg8f8 Qh7h8+ Kf8e7 Qh8xg7+
>Be8f7 Nh4g6+ Ke7d7 Qg7xf7+ Kd7c8 Ng6e7+ Kc8b7 Ne7c6 Rd8d7 Qf7g6 Rb8c8 Bc1d2 a6a5
>Nc6xa5+ Kb7b8
>    12/32	00:07	   4.230.181	632.597	+6.45	Qh5xh7+ Kg8f8 Qh7h8+ Kf8e7 Qh8xg7+
>Be8f7 Nh4g6+ Ke7d7 Qg7xf7+ Kd7c8 Ng6e7+ Kc8b7 Ne7c6 Rd8f8 Qf7e6 Rb8e8 Qe6xd6
>c7xd6 Bc1d2 Bd4c5 Rh3h7+ Kb7b6
>    13/34	00:11	   7.218.295	646.163	+6.59	Qh5xh7+ Kg8f8 Qh7h8+ Kf8e7 Qh8xg7+
>Be8f7 Nh4g6+ Ke7d7 Qg7xf7+ Kd7c8 Ng6e7+ Kc8b7 Ne7c6 Rd8f8 Qf7e6 Rb8e8 Qe6xd6
>c7xd6 Rh3h7+ Kb7b6 a4a5+ Kb6b5 Rh7b7+ Kb5c5 Nc6xb4
>    14/38	00:20	  12.820.890	646.605	+6.82	Qh5xh7+ Kg8f8 Qh7h8+ Kf8e7 Qh8xg7+
>Be8f7 Nh4g6+ Ke7d7 Qg7xf7+ Kd7c8 Ng6e7+ Kc8b7 Ne7c6 Rd8d7 Qf7e6 Rb8a8 Nc6a5+
>Kb7b8 Na5c4 Bd4xb2 Nc4xb2 Qd6xe6 d5xe6
>    15/42	01:02	  38.818.569	626.267	+6.80	Qh5xh7+ Kg8f8 Qh7h8+ Kf8e7 Qh8xg7+
>Be8f7 Nh4g6+ Ke7d7 Qg7xf7+ Kd7c8 Ng6e7+ Kc8b7 Ne7c6 Rd8d7 Qf7e6 Rb8f8 Bc1d2
>Bd4c5 Bb3c4 Rf8c8 b2b3
>    16/43	02:25	  89.155.531	614.670	+6.98	Qh5xh7+ Kg8f8 Qh7h8+ Kf8e7 Qh8xg7+
>Be8f7 Nh4g6+ Ke7d7 Qg7xf7+ Kd7c8 Ng6e7+ Kc8b7 Ne7c6 Rd8f8 Qf7e6 Qd6c5 Bc1d2
>Rb8e8 Qe6d7 a6a5 Rh3h7 Re8c8 Bd2h6
>    17/49	06:11	 225.643.290	608.690	+7.09	Qh5xh7+ Kg8f8 Qh7h8+ Kf8e7 Qh8xg7+
>Be8f7 Nh4g6+ Ke7d7 Qg7xf7+ Kd7c8 Ng6e7+ Kc8b7 Ne7c6 Rd8d7 Qf7e6 Rb8a8 Nc6a5+
>Kb7a7 Bc1d2 Rd7g7 Na5c6+ Ka7b6 Bd2xb4
>    17/49+	09:09	 323.994.178	590.406	+7.10	Nh4g6 Be8d7 Qh5xh7+ Kg8f7 Rh3g3
>Bd7xf5 Ng6xe5+ Kf7e8 Qh7h5+ g7g6 Rg3xg6 Qd6xe5 Rg6g7+ Bf5g6 Qh5xg6+ Ke8f8 Bc1h6
>   4/21/2005 2:57:18 AM, Time for this analysis: 00:10:00, Rated time: 12:11
>
>Certainly worth a nice deep search to be sure which is better.  At any rate, we
>clearly have a new solution as +7 pawns is going to be pretty hard to overcome,
>I think.

[D]1r1rb1k1/2p3pp/p2q1p2/3PpP1Q/Pp1bP2N/1B5R/1P4PP/2B4K w - - 0 1

Confirmed by CM9_R1 on an AMD 2500 in a little more than one minute:

Time	Depth	Score	Positions	Moves
0:00	1/3	-2.42	1548		1.Qe2 Qc5 2.d6+ Kh8
0:00	1/3	-1.76	2199		1.Ng6 h6 2.Ne7+ Kh7 3.Ng6
0:00	1/3	1.43	3115		1.Qxh7+ Kf8 2.Rg3 Qd7 3.Qh8+ Ke7
					4.Rxg7+ Bf7
0:00	1/4	6.19	7840		1.Qxh7+ Kf8 2.Qh8+ Ke7 3.Qxg7+
					Bf7 4.Ng6+ Kd7 5.Qxf7+ Kc8 6.Qe6+
					Kb7 7.Qxd6 cxd6
0:00	1/5	6.19	13729		1.Qxh7+ Kf8 2.Qh8+ Ke7 3.Qxg7+
					Bf7 4.Ng6+ Kd7 5.Qxf7+ Kc8 6.Qe6+
					Kb7 7.Qxd6 cxd6
0:00	1/6	6.19	40490		1.Qxh7+ Kf8 2.Qh8+ Ke7 3.Qxg7+
					Bf7 4.Ng6+ Kd7 5.Qxf7+ Kc8 6.Qe6+
					Kb7 7.Qxd6 cxd6
0:00	1/7	6.63	73118		1.Qxh7+ Kf8 2.Qh8+ Ke7 3.Qxg7+
					Bf7 4.Ng6+ Kd7 5.Qxf7+ Kc8 6.Qe6+
					Kb7 7.Qxd6 cxd6 8.Rh7+ Kb6
0:00	1/8	6.82	159092		1.Qxh7+ Kf8 2.Qh8+ Ke7 3.Qxg7+
					Bf7 4.Ng6+ Kd7 5.Qxf7+ Kc8 6.Qe6+
					Kb7 7.Qxd6 cxd6 8.Rh7+ Kb6 9.Rf7
0:01	1/9	6.62	494046		1.Qxh7+ Kf8 2.Qh8+ Ke7 3.Qxg7+
					Bf7 4.Ng6+ Kd7 5.Qxf7+ Kc8 6.Qe6+
					Kb7 7.Qxd6 cxd6 8.Rh7+ Kb6 9.Rf7
					Rbc8
0:08	1/10	6.63	2616986		1.Qxh7+ Kf8 2.Qh8+ Ke7 3.Qxg7+
					Bf7 4.Ng6+ Kd7 5.Qxf7+ Kc8 6.Qe6+
					Kb7 7.Qxd6 cxd6 8.Rh7+ Kb6 9.Rf7
					Rbc8 10.Bd2
0:15	1/11	6.91	4944512		1.Qxh7+ Kf8 2.Qh8+ Ke7 3.Qxg7+
					Bf7 4.Ng6+ Kd7 5.Qxf7+ Kc8 6.Qe6+
					Kb7 7.Bc4 Qxe6 8.fxe6 Rg8 9.Ne7
					Rh8 10.Nc6 Rxh3 11.gxh3
0:37	1/12	6.98	12597474	1.Qxh7+ Kf8 2.Ng6+ Bxg6 3.fxg6
					Ke8 4.Qxg7 Qe7 5.Rh8+ Kd7 6.Qxe7+
					Kxe7 7.d6+ Kxd6 8.Rxd8+ Rxd8 9.g7
					c6 10.g8=Q Rxg8 11.Bxg8 a5
1:06	1/12	7.93	20313089	1.Ng6 Bxg6 2.fxg6 hxg6 3.Qxg6 Rd7
					4.Rh7 Rf7 5.Bh6 Kf8 6.Bxg7+ Ke8
					7.Bh6 Qe7 8.Rh8+ Kd7 9.Qf5+ Kd6
					10.Rxb8 Bxb2 11.Rxb4
1:50	1/13	8.20	32266912	1.Ng6 Bxg6 2.fxg6 Re8 3.Qxh7+ Kf8
					4.Qh8+ Ke7 5.Qxg7+ Kd8 6.Rh8 Qe7
					7.Rxe8+ Qxe8 8.Qh7 Rb7 9.g7 c6
					10.Qh8 Rxg7 11.Qxg7 cxd5 12.Qxf6+
					Kc7 13.exd5
4:20	2/14	8.87	76499006	1.Ng6 Bxg6 2.fxg6 Re8 3.Qxh7+ Kf8
					4.Qh8+ Ke7 5.Qxg7+ Kd8 6.Rh8 Qe7
					7.Rxe8+ Kxe8 8.Qh8+ Kd7 9.Qxb8
					Qc5 10.Bd2 Bc3 11.bxc3 Qf2 12.h3
					Qxd2 13.Qxb4
14:25	3/15	8.97	257845466	1.Ng6 Bxg6 2.fxg6 Re8 3.Bd1 Kf8
					4.gxh7 Ke7 5.Qg6 Qd7 6.Qxg7+ Kd6
					7.Qxf6+ Kc5 8.h8=Q Rxh8 9.Rxh8
					Rxh8 10.Qxh8 Qf7 11.Bf3 c6 12.Qd8

jm



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