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Subject: Re: Testposition

Author: Mike Byrne

Date: 05:42:31 02/22/06

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On February 22, 2006 at 01:24:06, Eelco de Groot wrote:

>I think this position is a bit unclear. Shredder at 16 ply only gave +0.33 for
>Bg5, then fail-high and fail-low. The result could be of some theorethical
>importance, see my post below
>http://www.talkchess.com/forums/1/message.html?488487 But; do other programs
>also play 22.Bg5 and do they give a big advantage for White?
>
>[D]rnbq2k1/4r1p1/p2b1nQB/1BpP4/7N/1P4P1/P4P1P/2K1R2R w - -
>
>Engine: Shredder 9 UCI (200 MB, Athlon 2009 MHz)
>gemaakt door Stefan Meyer-Kahlen
>
>17     22:27  +1.02    22.Bg5 Rxe1+ 23.Rxe1 Qa5 24.Kd1 (666.458.223) 494
>
>17     26:04  +0.43    22.Bd3 Raa7 23.Kb1 Qe8 24.Qxe8+ Rxe8
>                       25.Rxe8+ Nxe8 (766.596.712) 489
>
>17     26:00  +0.38    22.Bc4 Raa7 23.f3 Qa5 24.Rxe7 Rxe7
>                       25.Kb1 Re1+ 26.Rxe1 Qxe1+ 27.Bc1 Qe5
>                       28.a3 Qe8 29.Qxe8+ Nxe8 30.Bb2 Nc7 (764.642.249) 489
>
> Eelco

FEN: rnbq2k1/4r1p1/p2b1nQB/1BpP4/7N/1P4P1/P4P1P/2K1R2R w - - 0 1

Crafty-20.3 (modified):
   1	00:00	       3.285	3.285	+0.67	1.Bc4
   1	00:00	       3.451	3.451	+0.67	1.Bc4
   2	00:00	       3.708	3.708	+0.24	1.Bc4 Bg4 2.Rxe7 Qxe7
   2	00:00	       4.180	4.180	+0.45	1.Bc6 Bb7
   2	00:00	         245	245	+0.49	1.Rxe7 Qxe7 2.Bc4
   2	00:00	       4.890	244.500	+0.49	1.Rxe7 Qxe7 2.Bc4
   3	00:00	       5.445	272.250	+0.38	1.Rxe7 Qxe7 2.Bc6 Nxc6 3.dxc6
   3	00:00	       1.154	57.700	+0.42	1.Bc4 Bd7
   3	00:00	       9.899	494.950	+0.42	1.Bc4 Bd7
   4	00:00	      15.522	776.100	+0.52	1.Bc4 Bg4 2.Rxe7 Qxe7 3.Kb1
   4	00:00	      29.047	1.452.350	+0.52	1.Bc4 Bg4 2.Rxe7 Qxe7 3.Kb1
   5	00:00	      44.837	1.494.566	+0.57	1.Bc4 Kh8 2.Rxe7 Qxe7 3.Be3
   5	00:00	      91.726	1.834.520	+0.57	1.Bc4 Kh8 2.Rxe7 Qxe7 3.Be3
   6	00:00	     131.375	2.189.583	+0.48	1.Bc4 Kh8 2.Rxe7 Qxe7 3.Bg5 Bd7
   6	00:00	      36.947	284.207	+0.50	1.Bg5 axb5 2.Bxf6 Rxe1+ 3.Rxe1 Qc7
   6	00:00	     344.648	2.461.771	+0.50	1.Bg5 axb5 2.Bxf6 Rxe1+ 3.Rxe1 Qc7
   7	00:00	     545.414	2.479.154	+0.24	1.Bg5 Rxe1+ 2.Rxe1 Qa5 3.Re8+ Nxe8
4.Qxe8+ Bf8 5.Ba4
   7	00:00	     927.548	2.576.522	+0.74	1.Bd3 Qf8 2.Bg5 Rxe1+ 3.Rxe1 Qf7 4.Bxf6
Qxg6 5.Nxg6 gxf6
   7	00:01	   1.087.607	2.589.540	+0.74	1.Bd3 Qf8 2.Bg5 Rxe1+ 3.Rxe1 Qf7 4.Bxf6
Qxg6 5.Nxg6 gxf6
   8	00:01	   1.618.448	2.653.193	+0.81	1.Bd3 Raa7 2.Nf5 Rxe1+ 3.Rxe1 Bf8 4.Bg5
Qxd5 5.Nh6+ Kh8 6.Bxf6 gxf6 7.Qxf6+
   8	00:01	   1.942.802	2.698.336	+0.81	1.Bd3 Raa7 2.Nf5 Rxe1+ 3.Rxe1 Bf8 4.Bg5
Qxd5 5.Nh6+ Kh8 6.Bxf6 gxf6 7.Qxf6+
   9	00:01	   2.714.745	2.714.745	+0.87	1.Bd3 Raa7 2.Nf5 Bxf5 3.Bxf5 Rab7 4.Be6+
Kh8
   9	00:01	   3.080.631	2.726.222	+0.87	1.Bd3 Raa7 2.Nf5 Bxf5 3.Bxf5 Rab7 4.Be6+
Kh8
  10	00:02	   6.056.237	2.803.813	+0.86	1.Bd3 Raa7 2.Bf5 c4 3.Rxe7 Rxe7 4.bxc4
Qc7 5.Bd3
  10	00:03	   7.527.201	2.851.212	+0.86	1.Bd3 Raa7 2.Bf5 c4 3.Rxe7 Rxe7 4.bxc4
Qc7 5.Bd3
  11	00:08	  22.752.244	2.844.030	+0.85	1.Bd3 Raa7 2.Nf5 Bxf5 3.Bxf5 Rac7 4.Re6
Rcd7
  11	00:14	  17.343.831	1.175.852	+1.03	1.Bg5 Qf8 2.Bd3 Rxe1+ 3.Rxe1 Nbd7 4.Nf5
Bb7 5.Nxd6 Qxd6 6.Bh6 Qf8 7.d6 Rd8
  11	00:14	  42.907.385	3.064.813	+1.03	1.Bg5 Qf8 2.Bd3 Rxe1+ 3.Rxe1 Nbd7 4.Nf5
Bb7 5.Nxd6 Qxd6 6.Bh6 Qf8 7.d6 Rd8
  12	00:19	  59.064.839	3.108.675	+1.17	1.Bg5 axb5 2.Bxf6 Rxe1+ 3.Rxe1 Qxf6
4.Re8+ Bf8 5.Qxf6 gxf6 6.Rxc8 Kg7 7.Nf5+ Kg6 8.d6 Kxf5 9.Rxf8
  12	00:22	  67.691.091	3.076.867	+1.17	1.Bg5 axb5 2.Bxf6 Rxe1+ 3.Rxe1 Qxf6
4.Re8+ Bf8 5.Qxf6 gxf6 6.Rxc8 Kg7 7.Nf5+ Kg6 8.d6 Kxf5 9.Rxf8
  13	00:30	  90.206.550	3.006.885	+1.11	1.Bg5 axb5 2.Bxf6 Rxe1+ 3.Rxe1 Qxf6
4.Re8+ Bf8 5.Qxf6 gxf6 6.Rxc8 Kf7 7.Kb1 Be7 8.Nf5
  13	00:36	 109.968.155	3.054.670	+1.11	1.Bg5 axb5 2.Bxf6 Rxe1+ 3.Rxe1 Qxf6
4.Re8+ Bf8 5.Qxf6 gxf6 6.Rxc8 Kf7 7.Kb1 Be7 8.Nf5
  14	00:53	 163.188.802	3.079.034	+1.12	1.Bg5 axb5 2.Bxf6 Rxe1+ 3.Rxe1 Qxf6
4.Re8+ Bf8 5.Qxf6 gxf6 6.Rxc8 Kf7 7.Rc7+ Kg8 8.Kb1 Na6 9.Rd7
  14	01:04	 198.166.094	3.096.345	+1.12	1.Bg5 axb5 2.Bxf6 Rxe1+ 3.Rxe1 Qxf6
4.Re8+ Bf8 5.Qxf6 gxf6 6.Rxc8 Kf7 7.Rc7+ Kg8 8.Kb1 Na6 9.Rd7




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