A pretty sacrifice by M.Tal.

George Tsavdaris · Post by **George Tsavdaris** » Tue Jun 05, 2007 1:05 am

White to play and win. A great move by M.Tal....
Other moves may (or may not) also win, but why make things more complex that they are?

1.Rf6!! wins by force.

After 1.Rf6!! gxf6(1...Qf8 is met by 2.Bxh7!!) 2.Bxh7! Kxh7 3.Ng4 Qf8 4.Rf1 f5 5.Nf6+ Kh8 6.Rf3 1-0

[d]r1b1q1k1/1p2rppn/p3p2p/3pP2Q/3P4/2PBN2P/PP4P1/R4RK1 w - - 0 1

Dann Corbit · Post by **Dann Corbit** » Wed Jun 06, 2007 4:19 am

George Tsavdaris wrote:White to play and win. A great move by M.Tal....
Other moves may (or may not) also win, but why make things more complex that they are?
1.Rf6!! wins by force.

After 1.Rf6!! gxf6(1...Qf8 is met by 2.Bxh7!!) 2.Bxh7! Kxh7 3.Ng4 Qf8 4.Rf1 f5 5.Nf6+ Kh8 6.Rf3 1-0

[d]r1b1q1k1/1p2rppn/p3p2p/3pP2Q/3P4/2PBN2P/PP4P1/R4RK1 w - - 0 1

A really marvelous position, and very difficult for computers.
A three minute think failed to scare up the key move:

Code: Select all

Analysis from E:\rf6a.epd   
6/5/2007 5:57:43 PM Level: 180 Seconds
Analyzing engine: Rybka v1.2.w32

1) Rf6;                 
    Searching move: Rf1-f6
    Best move (Rybka v1.2.w32): c3-c4
    Not found in: 03:00
      2	00:00	         376	2.048	+1.06	Qh5g4
      3	00:01	         568	2.851	+1.02	Qh5g4
      4	00:01	       1.232	5.734	+0.91	Qh5g4 Nh7g5
      5	00:01	       2.784	11.357	+0.88	Qh5g4 Nh7g5 h3h4
      6	00:01	       5.296	19.230	+0.85	Qh5g4 Nh7g5 h3h4 Ng5e4
      7	00:01	      12.040	35.736	+0.86	Qh5g4 Nh7g5 h3h4 Ng5e4 Bd3xe4
      8	00:01	      25.112	53.019	+0.82	Qh5g4 Nh7g5 h3h4 Ng5e4 Bd3xe4 d5xe4 Qg4xe4 Qe8b5
      9	00:01	      55.344	73.888	+0.77	Qh5g4 Nh7g5 h3h4 Ng5e4 Bd3xe4 d5xe4 Qg4xe4 Bc8d7 Qe4g4
      9	00:02	      73.288	51.052	+0.83	c3c4 d5xc4 Ne3xc4 f7f5 Qh5xe8+ Re7xe8 Nc4d6 Re8f8 Ra1c1 Bc8d7
     10	00:03	     183.160	63.837	+0.93	c3c4 d5xc4 Ne3xc4 f7f5 Qh5xe8+ Re7xe8 Nc4d6 Re8f8 Rf1c1 Bc8d7 Nd6xb7
     11	00:04	     250.608	67.567	+0.88	c3c4 d5xc4 Ne3xc4 f7f5 Qh5xe8+ Re7xe8 Nc4d6 Re8d8 Ra1c1 b7b5 g2g4 g7g6
     12	00:07	     378.464	57.008	+0.89	c3c4 d5xc4 Ne3xc4 f7f5 Qh5xe8+ Re7xe8 Nc4d6 Re8d8 Ra1c1 b7b5 g2g4 g7g6 Rc1c7
     13	00:20	   1.516.240	79.810	+0.90	c3c4 d5xc4 Ne3xc4 f7f5 Qh5xe8+ Re7xe8 Nc4d6 Re8e7 Ra1c1 Bc8d7 d4d5 g7g6 Rc1c7 Nh7f8
     14	00:28	   2.328.088	87.283	+0.89	c3c4 d5xc4 Ne3xc4 f7f5 Qh5xe8+ Re7xe8 Nc4d6 Re8e7 Ra1c1 Bc8d7 Rc1c7 Kg8f8 Rc7xb7 Bd7b5
     15	00:46	   4.207.056	94.356	+0.90	c3c4 d5xc4 Ne3xc4 f7f5 Qh5xe8+ Re7xe8 Nc4d6 Re8e7 Ra1c1 Bc8d7 Rc1c7 Kg8f8 Rc7xb7 Bd7b5
     16	01:04	   6.303.096	101.566	+0.86	c3c4 d5xc4 Ne3xc4 f7f5 Qh5xe8+ Re7xe8 Nc4d6 Re8e7 Ra1c1 Bc8d7 Rc1c7 b7b5 d4d5 Kg8f8
     17	02:54	  16.233.552	95.646	+0.89	c3c4 d5xc4 Ne3xc4 f7f5 Qh5xe8+ Re7xe8 Nc4d6 Re8e7 Ra1c1 Bc8d7 Rc1c7 b7b5 d4d5 Kg8f8
   6/5/2007 6:00:48 PM, Time for this analysis: 00:03:00, Rated time: 03:00

0 of 1 matching moves
6/5/2007 6:00:49 PM, Total time: 12:03:06 AM
Rated time: 03:00 = 180 Seconds

--------------------------------------------------------------------------------

Analysis from E:\rf6a.epd   
6/5/2007 5:57:43 PM Level: Infinite
Analyzing engine: Shredder9UCI

1) Rf6;                 
    Searching move: Rf1-f6
    Best move (Shredder9UCI): Qh5-h4
    Not found in: 03:00
     2/8-	00:00	         146	190	+2.12	Ne3g4
     2/8	00:00	         170	221	+2.12	Ne3g4 Nh7g5
     2/8+	00:00	         363	464	+2.16	c3c4
     2/8	00:00	         410	524	+2.18	c3c4 d5xc4
     2/8+	00:00	         488	624	+2.25	Qh5h4 Bc8d7
     2/8	00:00	         489	625	+2.25	Qh5h4 Bc8d7
     3/3	00:00	         539	689	+2.25	Qh5h4 Bc8d7
     4/4	00:01	       2.420	3.094	+2.25	Qh5h4 Bc8d7
     5/5	00:01	       4.251	5.333	+2.25	Qh5h4 Bc8d7
     6/6	00:01	      11.834	14.555	+2.25	Qh5h4 Bc8d7
     7/7	00:01	      27.526	32.006	+2.25	Qh5h4 Bc8d7
     8/8	00:01	      52.116	57.459	+2.25	Qh5h4 Bc8d7
     9/9	00:01	      64.487	67.667	+2.25	Qh5h4 Bc8d7
    10/14	00:01	     119.612	112.523	+2.25	Qh5h4 Bc8d7
    11/15	00:01	     265.924	200.243	+2.25	Qh5h4 Bc8d7
    12/13	00:02	     575.295	304.227	+2.25	Qh5h4 Bc8d7
    13/16	00:02	   1.023.905	380.917	+2.25	Qh5h4 Bc8d7
    14/19	00:04	   1.890.339	451.370	+2.25	Qh5h4 Bc8d7
    15/24	00:07	   3.444.504	497.616	+2.25	Qh5h4 Bc8d7
    16/28	00:13	   7.175.954	536.519	+2.25	Qh5h4 Bc8d7
    17/38	01:04	  30.426.515	476.344	+2.18	Qh5h4 Bc8d7 Ne3g4 Qe8f8 Qh4g3 Kg8h8 h3h4 Bd7b5 Bd3xb5 a6xb5 Qg3d3 Kh8g8 a2a3 h6h5 Ng4e3 Qf8e8 Ra1c1 Re7c7
   6/5/2007 6:03:59 PM, Time for this analysis: 00:03:01, Rated time: 03:00

0 of 1 matching moves
6/5/2007 6:04:00 PM, Total time: 12:06:17 AM
Rated time: 03:00 = 180 Seconds

--------------------------------------------------------------------------------

Analysis from E:\rf6a.epd   
6/5/2007 5:57:43 PM Level: Infinite
Analyzing engine: Fruit2.2.1

1) Rf6;                 
    Searching move: Rf1-f6
    Best move (Fruit2.2.1): c3-c4
    Not found in: 03:00
     2/8	00:00	         283	0	+1.54	Kg1h1 f7f5
     2/12	00:00	         771	0	+1.72	c3c4 f7f6
     3/12	00:00	       1.471	0	+1.68	c3c4 f7f6 Qh5xe8+ Re7xe8 c4xd5 e6xd5
     4/14	00:00	       5.622	0	+1.27	c3c4 d5xc4 Bd3xc4 f7f6 Qh5xe8+ Re7xe8 Ra1c1
     4/14	00:00	       8.774	0	+1.50	Qh5g4 Bc8d7 h3h4 g7g6
     5/14	00:00	      18.863	0	+1.34	Qh5g4 Bc8d7 Rf1f2 g7g6 Ra1f1
     6/14	00:00	      46.311	0	+1.35	Qh5g4 Bc8d7 Ra1c1 Bd7b5 c3c4 f7f5 e5xf6/ep Nh7xf6
     7/21	00:00	     112.623	0	+1.26	Qh5g4 Bc8d7 Ra1c1 g7g6 Qg4h4 h6h5 Rf1f2
     7/21	00:00	     124.760	0	+1.40	c3c4 d5xc4 Ne3xc4 f7f5 Qh5xe8+ Re7xe8 Nc4d6 Re8d8 Ra1c1 Nh7g5
     8/24	00:00	     227.369	0	+1.52	c3c4 d5xc4 Ne3xc4 f7f5 Qh5xe8+ Re7xe8 Nc4d6 Re8d8 Ra1c1 Nh7g5 Rc1c7
     9/26	00:01	     448.046	0	+1.51	c3c4 d5xc4 Ne3xc4 Qe8b5 Qh5g4 Kg8h8 a2a4 Qb5b4 h3h4 f7f5 e5xf6/ep Nh7xf6
    10/29	00:01	     897.275	690.000	+1.53	c3c4 d5xc4 Ne3xc4 Qe8b5 a2a4 Qb5d5 Qh5g4 Kg8h8 Nc4b6 Qd5b3 Nb6xa8 Qb3xd3
    11/29	00:02	   1.703.413	700.000	+1.43	c3c4 d5xc4 Ne3xc4 Qe8b5 a2a4 Qb5b4 Qh5g4 Bc8d7 Nc4d6 Qb4b3 Qg4e4 f7f5 e5xf6/ep Nh7xf6
    12/29	00:06	   4.448.505	723.333	+1.48	c3c4 d5xc4 Ne3xc4 Qe8b5 Qh5h4 Nh7g5 Qh4g4 Bc8d7 h3h4 Ng5h7 a2a4 Qb5b4 a4a5
    13/40	00:12	   8.691.228	719.167	+1.46	c3c4 d5xc4 Ne3xc4 Qe8b5 Qh5h4 Nh7g5 Qh4g4 Bc8d7 h3h4 Ng5h7 Ra1c1 Bd7c6 Rf1f2 g7g6
    14/40	00:52	  35.735.858	690.904	+1.51	c3c4 d5xc4 Ne3xc4 Qe8b5 Rf1xf7 Re7xf7 Nc4d6 Qb5d7 Qh5xf7+ Qd7xf7 Bd3xh7+ Kg8xh7 Nd6xf7 Bc8d7 Nf7d6 Bd7c6 Ra1f1 Kh7g6 Rf1f7 Ra8c8
    15/40	01:14	  51.811.986	705.385	+1.41	c3c4 d5xc4 Ne3xc4 Qe8b5 Qh5h4 Nh7g5 Qh4g4 Bc8d7 h3h4 Ng5h7 a2a4 Qb5b3 Ra1a3 Qb3b4 Nc4d6 Qb4xb2
    16/52	02:10	  92.117.364	709.833	+1.40	c3c4 d5xc4 Ne3xc4 Qe8b5 Qh5h4 Nh7g5 Qh4g4 Bc8d7 h3h4 Ng5h7 Ra1d1 Ra8f8 Nc4d6 Qb5xb2 Rf1f2 f7f5 Rf2xb2 f5xg4 Rb2xb7
   6/5/2007 6:07:07 PM, Time for this analysis: 00:03:00, Rated time: 03:00

0 of 1 matching moves
6/5/2007 6:07:08 PM, Total time: 12:09:25 AM
Rated time: 03:00 = 180 Seconds

--------------------------------------------------------------------------------

Analysis from E:\rf6a.epd   
6/5/2007 5:57:43 PM Level: Infinite
Analyzing engine: ChessTiger2007UCI

1) Rf6;                 
    Searching move: Rf1-f6
    Best move (ChessTiger2007UCI): c3-c4
    Not found in: 03:00
      2	00:03	         193	0	+1.22	Ne3g4 Nh7g5 g2g3
      2	00:03	         724	0	+1.28	Rf1f2 f7f5 Qh5f3
      3	00:03	       1.135	0	+1.52	Rf1f2 f7f5 Qh5f3
      4	00:03	       2.426	242.600	+1.30	Rf1f2 f7f5 Qh5f3 Nh7g5 Qf3f4
      5	00:03	       4.807	480.700	+1.30	Rf1f2 f7f5 Qh5f3 Nh7g5 Qf3f4
      6	00:03	       8.133	813.300	+1.08	Rf1f2 f7f5 Qh5xe8+ Re7xe8 Ra1f1 Nh7g5 Rf2f4
      6	00:03	      10.583	1.058.300	+1.16	Rf1f4 f7f5 Qh5e2 Bc8d7 Ra1f1 Bd7b5 Bd3xb5 Qe8xb5
      6	00:03	      22.206	740.200	+1.26	Qh5g4 Nh7g5 Rf1f2 Bc8d7 Ra1f1 Bd7b5 Bd3xb5 Qe8xb5
      7	00:03	      41.980	699.667	+1.20	Qh5g4 b7b6 Rf1f2 Bc8b7 Ra1f1 Nh7g5 g2g3
      8	00:03	      63.649	707.211	+1.16	Qh5g4 b7b6 c3c4 Nh7g5 c4xd5 e6xd5 Qg4e2 Bc8b7 Ne3f5
      9	00:03	     117.606	784.040	+1.16	Qh5g4 b7b6 c3c4 Nh7g5 c4xd5 e6xd5 Qg4e2 Bc8b7 Ne3f5
      9	00:03	     244.531	764.159	+1.24	Qh5e2 Bc8d7 Rf1f4 Bd7c6 Ra1f1 Nh7g5 Qe2f2 Ng5e4 Bd3xe4 d5xe4 Ne3g4
     10	00:03	     328.535	764.035	+1.28	Qh5e2 Bc8d7 Rf1f4 Bd7c6 Ne3g4 Bc6b5 Bd3xb5 Qe8xb5 Qe2xb5 a6xb5 g2g3
     11	00:03	     518.861	774.419	+1.20	Qh5e2 Bc8d7 Rf1f4 Bd7c6 Ra1f1 Bc6b5 Bd3xb5 Qe8xb5 Qe2f2 Qb5e8 Ne3g4
     11	00:03	     665.477	782.914	+1.56	c3c4 d5xc4 Ne3xc4 f7f5 Qh5xe8+ Re7xe8 Nc4d6 Re8d8 Ra1c1 Nh7g5 Rc1c7
     12	00:04	     743.554	774.535	+1.66	c3c4 d5xc4 Ne3xc4 f7f5 Qh5h4 Nh7g5 Nc4d6 Qe8g6 Ra1c1 Bc8d7 Rc1c7
     13	00:04	   1.084.674	774.767	+1.60	c3c4 d5xc4 Ne3xc4 f7f5 Qh5h4 Nh7g5 Nc4d6 Qe8f8 Ra1c1 Bc8d7 Qh4f4 Bd7c6 Rc1c5
     14	00:05	   1.632.072	780.896	+1.64	c3c4 d5xc4 Ne3xc4 f7f5 Qh5h4 Nh7g5 Nc4d6 Qe8f8 Ra1c1 Bc8d7 Bd3c4 Kg8h7 Qh4g3 Bd7c6 Bc4d3
     15	00:05	   2.133.755	790.280	+1.42	c3c4 d5xc4 Ne3xc4 f7f5 Qh5h4 Nh7g5 Nc4d6 Qe8f8 Qh4f4 Ng5f7 Ra1e1 Nf7xd6 e5xd6 Re7f7 Re1d1
     16	00:07	   3.709.201	808.105	+1.58	c3c4 d5xc4 Ne3xc4 f7f5 Qh5xe8+ Re7xe8 Nc4d6 Re8f8 Ra1c1 b7b5 Rc1c7 Rf8d8 d4d5 e6xd5 Bd3xf5 Bc8xf5 Rf1xf5
     17	00:21	  15.504.105	822.936	+1.60	c3c4 Nh7g5 c4xd5 e6xd5 h3h4 Ng5e6 Ne3xd5 Re7d7 Bd3c4 Qe8d8 Nd5e3 g7g6 Qh5xh6 Rd7xd4 h4h5 Qd8h4 Bc4e2
     18	00:45	  33.842.170	804.617	+1.46	c3c4 Nh7g5 c4xd5 e6xd5 Ne3xd5 Re7d7 Bd3c4 Ra8b8 Bc4b3 b7b6 Ra1d1 Rd7d8 Qh5e2 Bc8b7 Nd5xb6 Bb7xg2 Kg1xg2 Rb8xb6 d4d5
     19	01:43	  81.634.833	812.044	+1.72	c3c4 Nh7g5 c4xd5 e6xd5 h3h4 Ng5e6 Ne3xd5 Ne6xd4 Ra1e1 Qe8d8 Nd5xe7+ Qd8xe7 Rf1f4 Nd4c6 Qh5f3 Bc8e6
     20	02:19	 108.932.350	798.800	+1.76	c3c4 Nh7g5 c4xd5 e6xd5 h3h4 Ng5e6 Ne3xd5 Ne6xd4 Ra1e1 Qe8d8 Nd5xe7+ Qd8xe7 Rf1f4 Nd4c6 Qh5e2 Qe7c5+ Kg1h2 Bc8e6 Qe2e4 Ra8d8 Qe4h7+ Kg8f8 Qh7h8+
   6/5/2007 6:10:17 PM, Time for this analysis: 00:03:00, Rated time: 03:00

0 of 1 matching moves
6/5/2007 6:10:18 PM, Total time: 12:12:35 AM
Rated time: 03:00 = 180 Seconds

--------------------------------------------------------------------------------

Analysis from E:\rf6a.epd   
6/5/2007 5:57:43 PM Level: Infinite
Analyzing engine: Gandalf60

1) Rf6;                 
    Searching move: Rf1-f6
    Best move (Gandalf60): c3-c4
    Not found in: 03:00
     4/13+	00:00	      16.076	160.760	+1.85	Qh5g4 f7f5
     4/13	00:00	      17.209	172.090	+2.04	Qh5g4 Nh7g5 h3h4 f7f5 e5xf6/ep
     4/15+	00:00	      18.558	92.790	+2.04	Qh5h4 f7f5
     4/15	00:00	      18.803	94.015	+2.11	Qh5h4 f7f5 g2g4 Nh7g5 g4xf5
     5/20	00:00	      27.950	139.750	+1.82	Qh5h4 Nh7g5 Ne3g4 Ng5e4 Bd3xe4 d5xe4
     5/20+	00:01	      28.208	141.040	+1.82	Qh5g4 Nh7g5
     5/23	00:01	      32.335	161.675	+1.98	Qh5g4 f7f5 e5xf6/ep e6e5 Qg4f3
     6/23	00:01	      71.136	355.680	+1.60	Qh5g4 Nh7g5 h3h4 f7f5 e5xf6/ep e6e5
     6/23+	00:01	      71.537	357.685	+1.60	Qh5h4 Nh7g5
     6/23	00:01	      76.795	383.975	+1.95	Qh5h4 f7f5 g2g4 Nh7g5 g4xf5 Re7f7
     7/23	00:01	     173.638	434.095	+2.01	Qh5h4 f7f5 g2g4 f5xg4 Bd3g6 Qe8xg6 Qh4xe7 g4xh3+ Kg1h2
     8/23	00:01	     293.179	488.631	+2.01	Qh5h4 f7f5 g2g4 f5xg4 Bd3g6 Qe8xg6 Qh4xe7 g4xh3+ Kg1h2
     9/31	00:02	     666.336	512.566	+1.95	Qh5h4 f7f5 g2g4 f5xg4 Qh4xg4 Nh7g5 h3h4 Ng5e4 Bd3xe4 d5xe4 h4h5
    10/32	00:04	   2.042.651	552.067	+1.69	Qh5h4 Bc8d7 c3c4 Bd7c6 c4xd5 Bc6xd5 Ne3xd5 e6xd5 Ra1c1 f7f6 Rc1c5 Kg8h8 Bd3f5 f6xe5 Rc5xd5
    10/32+	00:04	   2.139.258	548.527	+1.69	c3c4 d5xc4
    10/32	00:05	   2.284.238	543.866	+1.85	c3c4 d5xc4 Ne3xc4 f7f5 Qh5xe8+ Re7xe8 Ra1c1 Nh7g5 Nc4d6 Re8f8 Rc1c7 Rf8d8
    11/33	00:07	   3.865.747	585.719	+1.85	c3c4 d5xc4 Ne3xc4 f7f5 Qh5xe8+ Re7xe8 Ra1c1 Nh7g5 Nc4d6 Re8d8 Rc1c7 Bc8d7 Rc7xb7
    12/35	00:11	   6.519.771	603.682	+1.66	c3c4 d5xc4 Ne3xc4 f7f5 Qh5xe8+ Re7xe8 Ra1c1 Re8d8 Nc4d6 b7b5 g2g4 Nh7g5 g4xf5 Ng5xh3+ Kg1h2
    12/35+	00:13	   7.607.840	585.218	+1.66	Qh5h4 Bc8d7
    12/35	00:15	   8.446.783	578.546	+1.66	c3c4 d5xc4 Ne3xc4 f7f5 Qh5xe8+ Re7xe8 Ra1c1 Re8d8 Nc4d6 b7b5 g2g4 Nh7g5 g4xf5 Ng5xh3+ Kg1h2
    13/35	00:34	  19.577.223	580.926	+1.69	c3c4 d5xc4 Ne3xc4 f7f5 Qh5xe8+ Re7xe8 Ra1c1 Re8d8 Nc4d6 b7b5 Rc1c7 Bc8d7 Rf1c1 Nh7g5 Rc1c3
    13/39+	00:39	  21.849.890	571.986	+1.69	Qh5h4 Bc8d7
    13/39	00:41	  22.983.649	564.708	+1.69	c3c4 d5xc4 Ne3xc4 f7f5 Qh5xe8+ Re7xe8 Ra1c1 Re8d8 Nc4d6 b7b5 Rc1c7 Bc8d7 Rf1c1 Nh7g5 Rc1c3
    14/44	01:36	  53.227.384	558.524	+1.76	c3c4 d5xc4 Ne3xc4 Qe8b5 Bd3xh7+ Kg8xh7 Ra1c1 f7f5 Nc4d6 Qb5xb2 Nd6xc8 Qb2xd4+ Kg1h1 Re7d7 Rc1d1 Qd4c4 Nc8b6 Rd7xd1 Rf1xd1
   6/5/2007 6:13:25 PM, Time for this analysis: 00:03:00, Rated time: 03:00

0 of 1 matching moves
6/5/2007 6:13:26 PM, Total time: 12:15:43 AM
Rated time: 03:00 = 180 Seconds

--------------------------------------------------------------------------------

Analysis from E:\rf6a.epd   
6/5/2007 5:57:43 PM Level: Infinite
Analyzing engine: Hiarcs11.1UCI

1) Rf6;                 
    Searching move: Rf1-f6
    Best move (Hiarcs11.1UCI): Qh5-h4
    Not found in: 03:00
     8/22	00:01	     201.776	314.292	+1.85	Qh5h4 Bc8d7 b2b3 Ra8c8 c3c4 d5xc4 b3xc4
     9/22-	00:01	     275.792	309.183	+1.60	Qh5h4
     9/22	00:01	     280.926	309.730	+1.60	Qh5h4 Bc8d7 b2b3 Ra8c8 c3c4 d5xc4 Ne3xc4
    10/23	00:03	     711.708	318.295	+1.67	Qh5h4 Bc8d7 c3c4 d5xc4 Ne3xc4 Bd7c6
    11/24	00:05	   1.586.354	319.185	+1.76	Qh5h4 Bc8d7 b2b3 f7f5 e5xf6/ep Nh7xf6 Ne3g4 Nf6xg4 Qh4xg4 b7b5
    12/27	00:10	   3.063.790	330.612	+1.86	Qh5h4 Bc8d7 b2b3 Qe8d8 a2a4 Re7e8 Qh4f4 f7f5 e5xf6/ep Qd8xf6 Qf4c7
    13/30	00:17	   5.577.469	329.579	+2.10	Qh5h4 Bc8d7 b2b3 f7f5 e5xf6/ep Nh7xf6 Rf1xf6
    14/33	00:34	  10.575.140	319.693	+1.86	Qh5h4 Bc8d7 b2b3 Ra8c8 c3c4 d5xc4 Ne3xc4
    15/33	01:28	  26.460.902	301.920	+2.09	Qh5h4 Bc8d7 a2a4 Ra8c8 Ne3g4 Qe8f8 Bd3c2 Nh7g5 Rf1f4
    16/37	02:21	  41.862.829	297.061	+1.95	Qh5h4 Bc8d7 a2a4 Qe8f8 Ne3g4 Bd7e8 Bd3c2 Nh7g5 a4a5 Be8b5 Rf1f4 Ra8c8 Qh4h5 Bb5e2
   6/5/2007 6:16:37 PM, Time for this analysis: 00:03:01, Rated time: 03:00

0 of 1 matching moves
6/5/2007 6:16:38 PM, Total time: 12:18:55 AM
Rated time: 03:00 = 180 Seconds

--------------------------------------------------------------------------------

Analysis from E:\rf6a.epd   
6/5/2007 5:57:43 PM Level: Infinite
Analyzing engine: Ktulu_75

1) Rf6;                 
    Searching move: Rf1-f6
    Best move (Ktulu_75): c3-c4
    Not found in: 03:00
      4	00:00	       5.261	526.100	+1.17	Kg1h1 Nh7g5 c3c4 d5xc4
      4	00:00	       8.234	823.400	+1.24	b2b4 Nh7g5 c3c4 d5xc4
      4	00:00	      15.363	1.536.300	+1.43	c3c4 d5xc4 Bd3xc4 Nh7g5 Ra1c1
      5	00:00	      22.085	736.166	+1.66	c3c4 d5xc4 Ne3xc4 Nh7g5 Nc4d6 Qe8a4
      5	00:00	      34.678	1.155.933	+1.61	Qh5g4 Bc8d7 h3h4 Bd7b5 c3c4
      5	00:00	      34.680	1.156.000	+1.66	c3c4 d5xc4
      6	00:00	      61.971	1.032.850	+1.80	c3c4 d5xc4 Ne3xc4 Qe8b5 a2a4 Qb5d5 Qh5g4
      7	00:00	     143.938	1.028.128	+1.46	c3c4 d5xc4 Ne3xc4 Qe8b5 Qh5g4 Bc8d7 a2a4 Qb5b3 Ra1a3
      8	00:00	     327.259	1.128.479	+1.29	c3c4 d5xc4 Ne3xc4 Qe8b5 Qh5e2 f7f5 e5xf6/ep Nh7xf6 Nc4d6 Qb5d5
      8	00:00	     444.534	1.111.335	+1.45	Qh5g4 Kg8h8 Qg4g3 f7f5 e5xf6/ep Nh7xf6 Ra1e1 Bc8d7 Qg3d6
      9	00:00	     644.387	1.092.181	+1.45	Qh5g4 Kg8h8 Qg4g3 f7f5 e5xf6/ep Nh7xf6 Qg3e5 Qe8f8 Rf1f3 Bc8d7 Ra1f1
     10	00:01	   1.275.391	1.090.077	+1.39	Qh5g4 Kg8h8 Qg4g3 Nh7g5 h3h4 Ng5e4 Qg3f4 f7f5 e5xf6/ep Ne4xf6
     11	00:04	   4.500.936	987.047	+1.59	Qh5g4 Kg8h8 Qg4g3 f7f5 e5xf6/ep Nh7xf6
     12	00:07	   7.315.393	1.030.337	+1.43	Qh5g4 Kg8h8 Qg4g3 Bc8d7 c3c4 d5xc4 Ne3xc4 f7f5 e5xf6/ep Nh7xf6 Nc4d6 Qe8b8 Qg3e5 Kh8g8 Bd3g6 Bd7c6
     13	00:16	  17.720.695	1.060.484	+1.25	Qh5g4 Bc8d7 c3c4 d5xc4 Ne3xc4 Bd7c6 Nc4d6 Qe8f8 Ra1c1 Bc6d5 b2b3 f7f5 Qg4g6 Nh7g5 h3h4 Ng5f7
     13	00:25	  27.414.668	1.079.742	+1.50	c3c4 d5xc4 Ne3xc4 Qe8b5 Qh5f3 Nh7g5 Qf3e3 Kg8h8 h3h4 Ng5h7 b2b3 f7f5 Nc4d6 Qb5b4
     14	00:36	  40.046.581	1.102.907	+1.43	c3c4 d5xc4 Ne3xc4 Qe8b5 Qh5f3 Bc8d7 Nc4d6 Qb5b4 Qf3xb7 Qb4xd4+ Rf1f2 Ra8f8 Qb7e4 Qd4xe4 Nd6xe4 Bd7b5 Bd3xb5 a6xb5 Ne4d6 f7f6 e5xf6
     15+	01:34	 105.489.335	1.111.625	+1.73	c3c4
     15	01:47	 120.080.638	1.123.614	+1.78	c3c4 d5xc4 Ne3xc4 Qe8b5 Bd3xh7+ Kg8xh7 Ra1c1 f7f5 Nc4d6 Qb5d7 g2g4 g7g6 Qh5h4 Re7g7 Rc1c3 g6g5 Qh4h5
     16	02:47	 188.919.217	1.129.359	+1.77	c3c4 d5xc4 Ne3xc4 Qe8b5 Bd3xh7+ Kg8xh7 Ra1c1 Bc8d7 Qh5h4 g7g5 Qh4h5 Ra8g8 Rf1xf7+ Re7xf7 Qh5xf7+ Rg8g7 Qf7f2 Qb5d5 b2b3 Bd7b5 Qf2c2+ Kh7h8 Qc2d3
   6/5/2007 6:19:46 PM, Time for this analysis: 00:03:00, Rated time: 03:00

0 of 1 matching moves
6/5/2007 6:19:47 PM, Total time: 12:22:04 AM
Rated time: 03:00 = 180 Seconds

--------------------------------------------------------------------------------

Analysis from E:\rf6a.epd   
6/5/2007 5:57:43 PM Level: Infinite
Analyzing engine: Spike1.2

1) Rf6;                 
    Searching move: Rf1-f6
    Best move (Spike1.2): c3-c4
    Not found in: 03:00
      2	00:00	         238	15.866	+1.55	Qh5g4 Nh7g5
      2	00:00	         305	20.333	+1.79	Rf1f2 f7f5 Qh5xe8+ Re7xe8
      2	00:00	         718	47.866	+1.79	Rf1f2 f7f5 Qh5xe8+ Re7xe8
      3	00:00	       1.578	105.200	+1.55	Rf1f2 f7f5 Qh5xe8+ Re7xe8 b2b3
      3	00:00	       2.930	195.333	+1.57	b2b3 f7f5 Qh5xe8+ Re7xe8 c3c4
      3	00:00	       5.718	381.200	+1.57	b2b3 f7f5 Qh5xe8+ Re7xe8 c3c4
      4	00:00	       8.053	536.866	+1.63	b2b3 b7b5 c3c4 b5xc4 b3xc4
      4	00:00	      13.312	429.419	+1.63	b2b3 b7b5 c3c4 b5xc4 b3xc4
      5-	00:00	      21.070	679.677	+1.33	b2b3 b7b5 c3c4 b5xc4 b3xc4 d5xc4
      5	00:00	      67.593	719.074	+1.41	Ra1e1 b7b5 h3h4 f7f5 Qh5xe8+ Re7xe8 Rf1f2
      5	00:00	      79.524	729.577	+1.73	c3c4 d5xc4 Ne3xc4 Qe8b5 Ra1e1 f7f5
      5	00:00	      83.503	668.024	+1.73	c3c4 d5xc4 Ne3xc4 Qe8b5 Ra1e1 f7f5
      6+	00:01	     103.309	662.237	+2.04	c3c4 d5xc4 Ne3xc4 Qe8b5 Qh5e2 Qb5d5 Qe2g4
      6+	00:01	     103.309	662.237	+2.04	c3c4 d5xc4 Ne3xc4 Qe8b5 Qh5e2 Qb5d5 Qe2g4
      6	00:01	     107.754	690.730	+2.09	c3c4 d5xc4 Ne3xc4 Qe8b5 Qh5e2 Qb5c6 Bd3xh7+ Kg8xh7 Nc4d6
      6	00:01	     116.317	676.261	+2.09	c3c4 d5xc4 Ne3xc4 Qe8b5 Qh5e2 Qb5c6 Bd3xh7+ Kg8xh7 Nc4d6
      7-	00:01	     125.443	670.818	+1.78	c3c4 d5xc4 Ne3xc4 Qe8b5 Qh5e2 Qb5c6 Bd3xh7+ Kg8xh7 Nc4d6
      7-	00:01	     150.856	743.133	+1.79	c3c4 d5xc4 Ne3xc4 Qe8b5 Qh5e2 Qb5c6 Bd3xh7+ Kg8xh7 Nc4d6
      7	00:01	     165.963	709.243	+1.80	c3c4 d5xc4 Ne3xc4 Qe8b5 Qh5e2 Qb5b4 Qe2g4 Nh7g5
      7	00:01	     166.013	709.457	+1.80	c3c4 d5xc4 Ne3xc4 Qe8b5 Qh5e2 Qb5b4 Qe2g4 Nh7g5
      8-	00:01	     196.218	740.445	+1.50	c3c4 d5xc4 Ne3xc4 Qe8b5 Qh5e2 Qb5b4 Qe2g4 Nh7g5
      8-	00:01	     446.366	816.025	+1.50	c3c4 d5xc4 Ne3xc4 Qe8b5 Qh5e2 Qb5b4 Qe2g4 Nh7g5
      8	00:01	     513.509	821.614	+1.89	c3c4 d5xc4 Ne3xc4 f7f5 Qh5xe8+ Re7xe8 Nc4d6 Re8f8 Ra1c1 b7b6 Rc1xc8 Ra8xc8 Nd6xc8 Rf8xc8 Bd3xa6
      8	00:01	     513.559	821.694	+1.89	c3c4 d5xc4 Ne3xc4 f7f5 Qh5xe8+ Re7xe8 Nc4d6 Re8f8 Ra1c1 b7b6 Rc1xc8 Ra8xc8 Nd6xc8 Rf8xc8 Bd3xa6
      9	00:01	     633.156	779.748	+1.89	c3c4 d5xc4 Ne3xc4 f7f5 Qh5xe8+ Re7xe8 Nc4d6 Re8d8 Ra1c1 b7b6 Rc1xc8 Ra8xc8 Nd6xc8 Rd8xc8 Bd3xa6
      9	00:01	     672.522	782.912	+1.89	c3c4 d5xc4 Ne3xc4 f7f5 Qh5xe8+ Re7xe8 Nc4d6 Re8d8 Ra1c1 b7b6 Rc1xc8 Ra8xc8 Nd6xc8 Rd8xc8 Bd3xa6
     10-	00:01	     768.763	768.763	+1.59	c3c4 d5xc4 Ne3xc4 f7f5 Qh5xe8+ Re7xe8 Nc4d6 Re8d8 Ra1c1 b7b6 Rc1xc8 Ra8xc8 Nd6xc8 Rd8xc8 Bd3xa6
     10-	00:02	   1.489.046	807.508	+1.59	c3c4 d5xc4 Ne3xc4 f7f5 Qh5xe8+ Re7xe8 Nc4d6 Re8d8 Ra1c1 b7b6 Rc1xc8 Ra8xc8 Nd6xc8 Rd8xc8 Bd3xa6
     10	00:02	   1.692.209	802.375	+1.69	c3c4 d5xc4 Ne3xc4 f7f5 Qh5xe8+ Re7xe8 Nc4d6 Re8f8 Ra1c1 b7b5 Rc1c5 Bc8d7 d4d5 e6xd5 Rc5xd5
     10	00:02	   1.692.259	802.398	+1.69	c3c4 d5xc4 Ne3xc4 f7f5 Qh5xe8+ Re7xe8 Nc4d6 Re8f8 Ra1c1 b7b5 Rc1c5 Bc8d7 d4d5 e6xd5 Rc5xd5
     11	00:03	   2.079.405	806.596	+1.69	c3c4 d5xc4 Ne3xc4 f7f5 Qh5xe8+ Re7xe8 Nc4d6 Re8f8 Ra1c1 b7b5 Rc1c5 Bc8d7 d4d5 e6xd5 Rc5xd5
     11	00:03	   2.391.873	818.573	+1.69	c3c4 d5xc4 Ne3xc4 f7f5 Qh5xe8+ Re7xe8 Nc4d6 Re8f8 Ra1c1 b7b5 Rc1c5 Bc8d7 d4d5 e6xd5 Rc5xd5
     12	00:05	   4.124.649	822.298	+1.75	c3c4 d5xc4 Ne3xc4 f7f5 Qh5xe8+ Re7xe8 Nc4d6 Re8f8 Ra1c1 b7b5 Rc1c7 Rf8d8 Rc7c5 Nh7g5 d4d5 e6xd5 Rc5xd5 Bc8e6
     12	00:06	   4.953.893	840.925	+1.75	c3c4 d5xc4 Ne3xc4 f7f5 Qh5xe8+ Re7xe8 Nc4d6 Re8f8 Ra1c1 b7b5 Rc1c7 Rf8d8 Rc7c5 Nh7g5 d4d5 e6xd5 Rc5xd5 Bc8e6
     13	00:16	  13.511.794	862.987	+1.96	c3c4 d5xc4 Ne3xc4 Qe8d7 Nc4d6 b7b5 Bd3e4 Ra8b8 Qh5h4 f7f5 Be4c6 Qd7c7 Kg1h2 Nh7g5
     13	00:17	  14.676.257	870.477	+1.96	c3c4 d5xc4 Ne3xc4 Qe8d7 Nc4d6 b7b5 Bd3e4 Ra8b8 Qh5h4 f7f5 Be4c6 Qd7c7 Kg1h2 Nh7g5
     14-	00:32	  27.292.877	856.193	+1.66	c3c4 d5xc4 Ne3xc4 Qe8d7 Nc4d6 b7b5 Bd3e4 Ra8b8 Qh5h4 f7f5 Be4c6 Qd7c7 Kg1h2 Nh7g5
     14-	00:44	  38.101.516	877.429	+1.66	c3c4 d5xc4 Ne3xc4 Qe8d7 Nc4d6 b7b5 Bd3e4 Ra8b8 Qh5h4 f7f5 Be4c6 Qd7c7 Kg1h2 Nh7g5
     14	00:53	  46.179.281	869.977	+1.59	c3c4 d5xc4 Ne3xc4 Qe8d8 Bd3xh7+ Kg8xh7 Nc4d6 Bc8d7 Qh5g4 Bd7b5 Rf1f2 Qd8c7 Qg4d1 Kh7h8 Ra1c1 Bb5c6 Qd1d3
     14	00:57	  49.407.899	876.368	+1.59	c3c4 d5xc4 Ne3xc4 Qe8d8 Bd3xh7+ Kg8xh7 Nc4d6 Bc8d7 Qh5g4 Bd7b5 Rf1f2 Qd8c7 Qg4d1 Kh7h8 Ra1c1 Bb5c6 Qd1d3
     15	01:14	  64.496.736	875.042	+1.84	c3c4 d5xc4 Ne3xc4 b7b5 Nc4d6 Qe8d7 Bd3e4 Ra8b8 Ra1c1 Nh7g5 Be4c6 Qd7a7 Rc1c5 Bc8d7 Rf1f4 Kg8h8 Nd6xf7+ Ng5xf7 Rf4xf7 Bd7xc6 Rf7xe7 Qa7xe7 Rc5xc6
     15	01:18	  68.299.310	879.103	+1.84	c3c4 d5xc4 Ne3xc4 b7b5 Nc4d6 Qe8d7 Bd3e4 Ra8b8 Ra1c1 Nh7g5 Be4c6 Qd7a7 Rc1c5 Bc8d7 Rf1f4 Kg8h8 Nd6xf7+ Ng5xf7 Rf4xf7 Bd7xc6 Rf7xe7 Qa7xe7 Rc5xc6
     16	02:06	 109.948.863	873.754	+2.00	c3c4 d5xc4 Ne3xc4 f7f5 Qh5xe8+ Re7xe8 Nc4d6 Re8e7 Rf1c1 Bc8d7 Nd6xb7 Bd7b5 Bd3xb5 a6xb5 Nb7d6 b5b4 Nd6c8 Re7f7 Nc8d6 Rf7a7
     16	02:12	 116.050.805	878.188	+2.00	c3c4 d5xc4 Ne3xc4 f7f5 Qh5xe8+ Re7xe8 Nc4d6 Re8e7 Rf1c1 Bc8d7 Nd6xb7 Bd7b5 Bd3xb5 a6xb5 Nb7d6 b5b4 Nd6c8 Re7f7 Nc8d6 Rf7a7
   6/5/2007 6:22:58 PM, Time for this analysis: 00:03:01, Rated time: 03:00

0 of 1 matching moves
6/5/2007 6:22:59 PM, Total time: 12:25:16 AM
Rated time: 03:00 = 180 Seconds

And yet after making the key move, most programs find it (and those that did not find it seemed to be pondering a fail-low). Here is the position after making the key move:
[d]r1b1q1k1/1p2rppn/p3pR1p/3pP2Q/3P4/2PBN2P/PP4P1/R5K1 b - -
and here is the engine analysis:

Code: Select all


Analysis from E:\rf6b.epd   
6/5/2007 6:48:48 PM Level: 180 Seconds
Analyzing engine: Rybka v1.2.w32

1) Rf6                  
    Searching move: 
    Best move (Rybka v1.2.w32): g7xf6
    Not found in: 03:00
      2	00:01	         224	4.778	+1.34	g7xf6
      3	00:01	         416	6.656	+1.25	g7xf6
      4	00:01	         840	10.888	-0.23	g7xf6 e5xf6 Nh7xf6 Qh5xh6
      5	00:01	       1.504	16.211	-0.23	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4
      6	00:01	       2.936	27.085	-0.19	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4
      7	00:01	       5.112	41.545	-0.15	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5
      8	00:01	       8.312	24.670	-0.16	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4d3
      9	00:02	      17.672	42.780	-0.05	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4d3 Re7g7
     10	00:02	      35.968	58.835	 0.00	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4d3 Re7g7 Ra1f1
     11	00:02	      63.520	74.251	-0.03	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4d3 Re7g7 Ra1f1 Bc8d7
     12	00:03	     129.608	79.329	-0.01	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4f3 Qe8b5 b2b3 Bc8d7 Qh6f4
     13	00:04	     271.576	91.238	-0.02	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4f3 Bc8d7 c3c4 d5xc4 Bf3xb7 Ra8b8
     14	00:07	     616.912	104.727	+0.01	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4f3 Qe8f8 Qh6f4 Re7g7 Ra1b1 Bc8d7 c3c4
     15	00:11	   1.087.544	115.129	 0.00	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4f3 Qe8f8 Qh6f4 Re7g7 c3c4 Qf8b4 b2b3
     16	00:16	   1.897.112	125.073	 0.00	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4f3 Qe8f8 Qh6f4 Bc8d7 c3c4 d5xc4 Ne3xc4
     17	00:31	   3.735.248	126.501	 0.00	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4f3 Re7h7 Qh6f6 Qe8f7 Qf6d8+ Qf7f8 Qd8b6
     18	00:53	   6.833.680	134.526	-1.64	g7xf6 Bd3xh7+ Kg8xh7 Ne3g4 Qe8f8 Ra1f1 f6f5 Ng4f6+ Kh7h8 Rf1f3 Bc8d7 Rf3g3 Qf8g7 Rg3xg7
   6/5/2007 6:51:55 PM, Time for this analysis: 00:03:01, Rated time: 03:00

0 of 1 matching moves
6/5/2007 6:51:56 PM, Total time: 12:03:08 AM
Rated time: 03:00 = 180 Seconds

--------------------------------------------------------------------------------

Analysis from E:\rf6b.epd   
6/5/2007 6:48:48 PM Level: Infinite
Analyzing engine: Shredder9UCI

1) Rf6                  
    Searching move: 
    Best move (Shredder9UCI): Nh7xf6
    Not found in: 03:00
     2/3	00:00	          85	181	+1.32	Nh7xf6 e5xf6
     3/5-	00:00	         325	692	+1.07	Nh7xf6 e5xf6
     3/5-	00:00	         358	763	+0.51	Nh7xf6 e5xf6
     3/5	00:00	         464	989	+0.51	Nh7xf6 e5xf6
     3/7+	00:00	         713	1.520	+0.52	g7xf6
     3/7+	00:00	         862	1.837	+0.87	g7xf6
     3/7	00:00	       1.042	2.221	+1.76	g7xf6 Qh5xh6 f6f5
     4/7-	00:00	       1.353	2.789	+1.26	g7xf6 Qh5xh6
     4/7	00:00	       1.809	3.729	+1.26	g7xf6 Qh5xh6 f6f5 Ne3g4
     5/14	00:00	       3.542	7.303	+1.17	g7xf6 Bd3xh7+ Kg8xh7 Ne3g4 Qe8f8 Ng4xf6+ Kh7h8
     6/19-	00:00	       5.499	11.338	+0.92	g7xf6 Bd3xh7+
     6/19	00:00	       8.802	17.604	+0.92	g7xf6 Bd3xh7+ Kg8xh7 Ne3g4 Qe8f8
     7/21	00:00	      32.779	59.925	+0.81	g7xf6 Bd3xh7+ Kg8xh7 Ne3g4 Qe8f8 Ng4xf6+ Kh7h8 Nf6g4 Bc8d7 Ng4xh6 f7f6 Nh6f7+ Kh8g8
     8/21	00:00	      63.317	106.594	+0.95	g7xf6 Bd3xh7+ Kg8xh7 Ne3g4 Qe8f8 Ng4xf6+ Kh7h8 Nf6g4 Bc8d7 Ra1f1 Bd7b5 Rf1f6 Qf8g7 Rf6xh6+ Kh8g8
     9/25-	00:00	      71.367	114.187	+0.70	g7xf6 Bd3xh7+
     9/25-	00:00	     118.470	168.520	+0.20	g7xf6 Bd3xh7+
     9/27	00:01	     174.121	218.470	-0.10	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4f3 Bc8d7 Qh6f6 Qe8f8 Ne3xd5 e6xd5 Bf3xd5+ Kg8h7
    10/25	00:01	     307.730	298.187	-0.10	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4f3 Bc8d7 Qh6f6 Qe8f8 Ne3xd5 e6xd5 Bf3xd5+ Kg8h7
    11/30	00:01	     534.415	379.825	+0.07	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4f3 Bc8d7 Ra1e1 Qe8f8 Qh6xf8+ Kg8xf8 Kg1f2 Re7g7
    12/33-	00:02	     774.192	416.232	-0.18	g7xf6 e5xf6
    12/33	00:02	   1.031.618	458.496	-0.32	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4xf5 e6xf5 Ne3xd5 Re7e6 Qh6g5+ Kg8f8 Qg5xf5+ Kf8g7 Ra1f1 Re6g6 Qf5d3 Kg7h8
    13/32-	00:03	   1.456.034	482.769	-0.57	g7xf6 e5xf6
    13/35	00:05	   2.845.573	538.730	-0.58	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4xf5 e6xf5 Ne3xd5 Re7f7 Qh6g5+ Kg8f8 Qg5h4 Kf8g8 Qh4g3+
    14/37	00:09	   5.095.206	556.427	-0.79	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4xf5 e6xf5 Ne3xd5 Qe8f8 Qh6g6+ Kg8h8 Nd5xe7 Qf8xe7
    15/39	00:19	   9.877.774	517.757	-0.60	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4xf5 e6xf5 Ne3xd5 Qe8f8 Nd5xe7+ Qf8xe7 Qh6g6+ Kg8h8 Qg6g3 Bc8e6 Ra1e1 Ra8e8
    16/39	00:31	  16.926.640	549.887	-0.75	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4xf5 e6xf5 Ne3xd5 Qe8f8 Qh6h4 Re7d7 Ra1e1 Rd7xd5 Re1e7 Qf8xe7 Qh4xe7 Bc8d7 Qe7g5+ Kg8h7 Qg5h5+ Kh7g7 g2g3
    17/48-	00:54	  30.354.020	559.036	-1.00	g7xf6 e5xf6
    17/48-	00:57	  31.843.295	560.029	-1.50	g7xf6 e5xf6
    17/48	01:22	  47.559.486	578.005	-5.10	g7xf6 Bd3xh7+ Kg8xh7 Ne3g4 Qe8f8 Ra1f1 f6f5 Ng4f6+ Kh7h8 Rf1f3 Qf8g7 Rf3g3 Bc8d7 Rg3xg7 Kh8xg7 Qh5h4 Bd7c6 Nf6h5+ Kg7f8 Qh4f6 Re7e8 Qf6xh6+ Kf8e7 Qh6f6+ Ke7f8 Nh5g7 b7b6 Ng7xe8
    17/48+	01:31	  53.131.187	582.055	-5.09	g7g6
    17/48+	01:36	  56.266.569	586.201	-4.74	g7g6
    17/48	01:59	  70.237.307	587.450	-4.74	g7g6 Qh5xh6
    17/48+	02:10	  76.751.280	587.358	-4.73	Nh7xf6
    17/48+	02:13	  78.395.338	589.505	-4.38	Nh7xf6
   6/5/2007 6:55:05 PM, Time for this analysis: 00:03:00, Rated time: 03:00

0 of 1 matching moves
6/5/2007 6:55:06 PM, Total time: 12:06:18 AM
Rated time: 03:00 = 180 Seconds

--------------------------------------------------------------------------------

Analysis from E:\rf6b.epd   
6/5/2007 6:48:48 PM Level: Infinite
Analyzing engine: Fruit2.2.1

1) Rf6                  
    Searching move: 
    Best move (Fruit2.2.1): g7xf6
    Not found in: 03:00
     2/7	00:00	         196	0	+1.73	g7xf6 Qh5xh6
     3/9	00:00	         945	0	+2.09	g7xf6 Qh5xh6 f6f5
     4/14	00:00	       2.996	0	+2.21	g7xf6 Qh5xh6 f6f5 Ra1f1
     5/17	00:00	      10.851	0	+2.12	g7xf6 Qh5xh6 f6f5 Ra1f1 Bc8d7
     6/17	00:00	      34.390	0	+2.12	g7xf6 Qh5g4+ Kg8h8 Bd3xh7 f6f5 Ne3xf5 e6xf5 Bh7xf5 Bc8xf5 Qg4xf5
     7/17	00:00	      74.601	0	+2.05	g7xf6 Qh5g4+ Kg8h8 Bd3xh7 f6f5 Ne3xf5 e6xf5 Bh7xf5 Bc8xf5 Qg4xf5 Qe8c6
     8/18	00:00	     123.392	0	+1.80	g7xf6 Qh5g4+ Kg8h8 Bd3xh7 f6xe5 Bh7c2 f7f5 Qg4h4 e5xd4 Qh4xh6+ Re7h7
     9/26	00:00	     201.463	0	-0.16	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4d3 Re7g7 Ra1f1
    10/26	00:01	     348.082	0	-0.24	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4d3 Re7g7 Ra1f1 Bc8d7
    11/35	00:01	     680.879	0	-0.13	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4d3 Re7g7 Kg1h2 Bc8d7 Ra1f1
    12/37	00:02	   1.293.994	770.000	-0.01	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4d3 Bc8d7 Ra1f1 Bd7b5 Bd3xb5 Qe8xb5 Qh6g6+ Kg8f8
    13/37	00:04	   3.232.546	807.500	-0.04	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4d3 Bc8d7 Ra1f1 Bd7b5 Bd3xb5 a6xb5 a2a3 Re7g7
    14/37	00:08	   6.363.444	807.143	-0.50	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4xf5 e6xf5 Ne3xd5 Re7f7 Nd5f6+ Rf7xf6 Qh6xf6 Qe8e3+ Kg1h2 Bc8e6 Ra1f1 Ra8c8 Qf6g6+ Kg8h8
    15/41	00:24	  19.350.242	805.296	-0.48	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4xf5 e6xf5 Ne3xd5 Re7f7 Nd5f6+ Rf7xf6 Qh6xf6 Bc8d7 Qf6g5+ Kg8f7 Qg5h6 Qe8e7 Ra1f1 Ra8g8 Qh6h7+ Rg8g7
    16/43	00:37	  30.570.506	815.863	-0.48	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4xf5 e6xf5 Ne3xd5 Re7f7 Nd5f6+ Rf7xf6 Qh6xf6 Bc8d7 Qf6g5+ Kg8f7 Qg5h6 Qe8e7 Ra1f1 Ra8g8 Qh6h7+ Rg8g7
    17/57	01:06	  54.637.778	831.488	-0.45	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4xf5 e6xf5 Ne3xd5 Re7f7 Nd5f6+ Rf7xf6 Qh6xf6 Bc8d7 Ra1f1 Qe8e6 Qf6g5+ Kg8f8 Qg5f4 Ra8e8 Qf4c7 Qe6e3+ Kg1h2
    18/57	02:51	 141.979.181	830.339	-2.96	g7xf6 Bd3xh7+ Kg8xh7 Ne3g4 Qe8f8 Ra1f1 f6f5 Ng4f6+ Kh7h8 Rf1f3 Bc8d7 Rf3g3 Qf8g7 Rg3xg7 Kh8xg7 Qh5h4 Ra8e8 Nf6xe8+ Re7xe8 Qh4f6+ Kg7g8 Qf6xh6 Re8c8 Kg1f2 Bd7b5 Qh6g5+ Kg8h7
   6/5/2007 6:58:14 PM, Time for this analysis: 00:03:01, Rated time: 03:00

0 of 1 matching moves
6/5/2007 6:58:16 PM, Total time: 12:09:27 AM
Rated time: 03:00 = 180 Seconds

--------------------------------------------------------------------------------

Analysis from E:\rf6b.epd   
6/5/2007 6:48:48 PM Level: Infinite
Analyzing engine: ChessTiger2007UCI

1) Rf6                  
    Searching move: 
    Best move (ChessTiger2007UCI): g7xf6
    Not found in: 03:00
      2	00:02	         205	0	+3.48	g7xf6 Qh5xh6 f6f5
      3	00:02	         620	0	+3.06	g7xf6 Ne3g4 f6xe5 Ng4xh6+ Kg8g7 d4xe5
      4	00:02	         657	0	+3.06	g7xf6 Ne3g4 f6xe5 Ng4xh6+ Kg8g7 d4xe5
      5	00:02	       1.454	72.700	+2.74	g7xf6 Ne3g4 f6f5 Ng4xh6+ Kg8f8
      6	00:02	       3.507	175.350	+2.84	g7xf6 Ne3g4 f6f5 Ng4xh6+ Kg8f8
      7	00:02	       5.981	299.050	+2.32	g7xf6 Ne3g4 f6f5 Ng4xh6+ Kg8g7 Ra1f1 Bc8d7
      8	00:02	      10.619	353.967	+2.32	g7xf6 Ne3g4 f6f5 Ng4xh6+ Kg8g7 Ra1f1 Bc8d7
      9	00:02	      23.027	460.540	+2.58	g7xf6 Ne3g4 f6f5 Ng4xh6+ Kg8g7 Ra1f1 Bc8d7 g2g3 Bd7b5 Bd3xb5 a6xb5
     10	00:02	      45.025	562.813	+2.32	g7xf6 Ne3g4 f6f5 Ng4xh6+ Kg8g7 Ra1f1 Nh7f8 g2g4 f5xg4 Qh5g5+ Nf8g6 Nh6xg4
     11	00:03	     132.233	777.841	+2.00	g7xf6 Qh5g4+ Kg8h8 Bd3xh7 f6xe5 Bh7c2 f7f5 Qg4h4 Kh8h7 Qh4f6 e5e4
     12	00:03	     193.133	772.532	+2.04	g7xf6 Qh5g4+ Kg8h8 Bd3xh7 f6xe5 Bh7c2 f7f5 Qg4h4 Kh8h7 d4xe5 Bc8d7
     13	00:03	     360.320	800.711	-0.10	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4d3 Re7h7 Qh6f6 Qe8f7 Qf6d8+ Kg8g7 Qd8g5+ Kg7f8
     14	00:03	     483.524	767.498	-0.10	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4d3 Re7h7 Qh6f6 Qe8f7 Qf6d8+ Kg8g7 Qd8g5+ Kg7f8
     15	00:03	     839.892	792.351	-0.14	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4d3 Re7h7 Qh6f6 Qe8f7 Qf6d8+ Kg8g7 Qd8g5+ Kg7f8
     16	00:05	   1.791.738	857.291	-0.06	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4d3 Re7h7 Qh6f6 Qe8f7 Qf6e5 Bc8d7 Ra1f1 Rh7g7
     17	00:05	   2.400.133	854.140	-0.06	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4d3 Re7g7 Ra1f1 Qe8g6 Qh6xg6 Rg7xg6 g2g4 Rg6g7 Kg1h2 f5xg4 h3xg4
     18	00:08	   4.937.082	866.155	+0.07	g7xf6 Ne3g4 f6f5 Ng4f6+ Nh7xf6 e5xf6 Re7c7 Qh5xh6 Qe8f8 Qh6f4 e6e5 Qf4g5+ Kg8h7 Bd3xf5+ Bc8xf5 Qg5xf5+ Kh7g8 Qf5g5+ Kg8h8 Qg5h5+ Kh8g8 Qh5g5+ Kg8h8 Qg5h5+ Kh8g8
     19	00:40	  34.899.874	932.653	-1.68	g7xf6 Bd3xh7+ Kg8xh7 Ne3g4 Qe8f8 Ra1f1 f6f5 Ng4f6+ Kh7h8 Rf1f3 Bc8d7 Rf3g3 Qf8g7 Rg3xg7 Kh8xg7 g2g4 f5xg4 h3xg4 Bd7b5 g4g5 Ra8h8
     20	01:04	  57.448.283	926.286	-1.94	g7xf6 Bd3xh7+ Kg8xh7 Ne3g4 Qe8f8 Ra1f1 f6f5 Ng4f6+ Kh7h8 Rf1f3 Bc8d7 Rf3g3 Qf8g7 Rg3xg7 Kh8xg7 g2g4 f5f4 g4g5 Ra8h8 h3h4 Bd7b5
     21	02:02	 110.737.563	922.890	-2.29	g7xf6 Bd3xh7+ Kg8xh7 Ne3g4 Qe8f8 Ra1f1 f6f5 Ng4f6+ Kh7h8 Rf1f3 Bc8d7 Rf3g3 Qf8g7 Rg3xg7 Kh8xg7 g2g4 f5f4 g4g5 Ra8h8 Kg1h2 Bd7b5 g5xh6+ Rh8xh6 Qh5g5+ Rh6g6
   6/5/2007 7:01:23 PM, Time for this analysis: 00:03:00, Rated time: 03:00

0 of 1 matching moves
6/5/2007 7:01:25 PM, Total time: 12:12:37 AM
Rated time: 03:00 = 180 Seconds

--------------------------------------------------------------------------------

Analysis from E:\rf6b.epd   
6/5/2007 6:48:48 PM Level: Infinite
Analyzing engine: Gandalf60

1) Rf6                  
    Searching move: 
    Best move (Gandalf60): g7xf6
    Not found in: 03:00
     6/25-	00:01	      21.842	109.210	+1.44	g7xf6 Qh5xh6 f6f5 c3c4 Qe8a4
     6/25-	00:01	      23.806	119.030	+1.05	g7xf6 Qh5xh6 f6f5 c3c4 Qe8a4
     6/25-	00:01	      25.629	128.145	+0.28	g7xf6 Qh5xh6 f6f5 c3c4 Qe8a4
     6/25-	00:01	      35.495	177.470	+0.28	g7xf6 Qh5xh6 f6f5 c3c4 Qe8a4
     7/25	00:01	      64.133	213.776	-0.22	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4f3 Re7g7
     8/26	00:01	     160.158	400.395	-0.35	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4f3 Re7h7 Qh6g5+ Rh7g7
     9/31	00:01	     384.094	548.705	-0.22	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4f3 Re7h7 Qh6g5+ Rh7g7 Qg5h6
    10/35	00:02	     848.366	605.975	-0.03	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4f3 Re7h7 Qh6g5+ Rh7g7 Bf3h5 Rg7xg5 Bh5xe8
    11/37	00:05	   2.589.391	602.183	-0.03	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4f3 Re7h7 Qh6g5+ Rh7g7 Bf3h5 Rg7xg5 Bh5xe8
    12/39	00:09	   5.993.740	665.971	 0.00	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4f3 Re7h7 Qh6g5+ Rh7g7 Qg5h6 Rg7h7
    13/39	00:26	  12.814.836	692.693	+0.06	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4f3 Qe8f8 Qh6xf8+ Kg8xf8 g2g4 f5xg4 Bf3xg4 Bc8d7 h3h4 Re7f7
    14/42-	00:26	  14.739.426	673.030	-0.25	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4f3 Qe8f8 Qh6xf8+ Kg8xf8 g2g4 f5xg4 Bf3xg4 Bc8d7 h3h4 Re7f7
    14/42	00:30	  20.741.300	691.376	-0.22	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4xf5 e6xf5 Ne3xd5 Re7f7 Nd5f6+ Rf7xf6 Qh6xf6 Qe8e3+ Kg1h2 Bc8e6 Ra1f1 Qe3e4 Rf1f3 Kg8h7
    15/45	00:47	  32.839.238	695.746	-0.25	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4xf5 e6xf5 Ne3xd5 Re7f7 Nd5f6+ Rf7xf6 Qh6xf6 Qe8e3+ Kg1h2 Qe3f4+ Kh2h1 Bc8d7 Ra1d1 Ra8e8 Qf6g6+ Kg8f8 d4d5
    16/49	01:24	  59.050.600	704.661	-0.19	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4xf5 e6xf5 Ne3xd5 Re7f7 Nd5f6+ Rf7xf6 Qh6xf6 Qe8e3+ Kg1h2 Qe3f4+ Kh2h1 Bc8d7 Qf6g6+ Kg8h8 d4d5 Ra8e8 Qg6f6+ Kh8g8 b2b3
    17/49-	01:54	  75.975.705	665.860	-0.51	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4xf5 e6xf5 Ne3xd5 Re7f7 Nd5f6+ Rf7xf6 Qh6xf6 Qe8e3+ Kg1h2 Qe3f4+ Kh2h1 Bc8d7 Qf6g6+ Kg8h8 d4d5 Ra8e8 Qg6f6+ Kh8g8 b2b3
    17/50	02:49	 112.050.113	665.776	-0.48	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4xf5 e6xf5 Ne3xd5 Qe8f8 Nd5xe7+ Qf8xe7 Ra1f1 Bc8d7 Rf1f3 Qe7g7 Qh6xg7+ Kg8xg7 d4d5 Kg7g6 Kg1f2 Ra8e8
   6/5/2007 7:04:33 PM, Time for this analysis: 00:03:01, Rated time: 03:00

0 of 1 matching moves
6/5/2007 7:04:34 PM, Total time: 12:15:46 AM
Rated time: 03:00 = 180 Seconds

--------------------------------------------------------------------------------

Analysis from E:\rf6b.epd   
6/5/2007 6:48:48 PM Level: Infinite
Analyzing engine: Hiarcs11.1UCI

1) Rf6                  
    Searching move: 
    Best move (Hiarcs11.1UCI): g7xf6
    Not found in: 03:00
    10/22	00:01	     195.376	320.288	-0.49	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4d3 Qe8f8 Qh6h5 Re7h7 Qh5g6+ Rh7g7 Qg6h5 Bc8d7
    10/22	00:01	     264.310	318.829	-0.28	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4f3 Qe8f8 Qh6h5 Re7h7 Qh5g6+ Rh7g7
    11/26	00:02	     514.907	343.042	-0.17	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4d3 Qe8f8 Qh6h5 Re7h7 Qh5g5+ Rh7g7 Qg5h4 Bc8d7 Qh4h6
    12/29-	00:02	     741.418	343.726	-0.42	g7xf6
    12/30	00:04	   1.353.669	349.243	-0.64	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4xf5 e6xf5 Ne3xd5 Re7e6 Qh6g5+ Kg8f8 Nd5c7 Re6e1+ Kg1h2 Re1xa1 Nc7xe8 Kf8xe8
    13/31	00:08	   2.778.929	354.953	-0.71	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4xf5 e6xf5 Ne3xd5 Re7e6 Qh6g5+ Re6g6 Nd5e7+ Kg8g7 Ne7xg6 Qe8xg6 Qg5e7+ Qg6f7 Qe7e5+ Kg7h7 d4d5
    14/35	00:18	   6.126.425	346.340	-0.64	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4xf5 e6xf5 Ne3xd5 Re7e6 Qh6g5+ Kg8f8 Nd5c7 Re6g6 Qg5d2 Qe8d8 Nc7xa8 Bc8d7 Ra1e1 Qd8xa8
    15/36	00:35	  12.164.169	344.769	-0.64	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4xf5 e6xf5 Ne3xd5 Re7e6 Qh6g5+ Kg8f8 Nd5c7 Re6g6 Qg5d2 Qe8d8 Nc7xa8 Bc8d7 Ra1e1 Kf8g8 c3c4
    16/41	01:14	  24.887.115	336.380	-0.63	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4xf5 e6xf5 Ne3xd5 Re7f7 Qh6g5+ Kg8f8 Qg5h4 Kf8g8 Ra1e1
    17/42-	02:01	  39.910.254	330.560	-0.88	g7xf6
    17/42	02:32	  50.281.092	330.794	-3.35	g7xf6 Bd3xh7+ Kg8xh7 Ne3g4 Qe8f8 Ra1f1 f6f5 Ng4f6+ Kh7h8 Rf1f3 Qf8g7 Rf3g3 Bc8d7 Rg3xg7 Kh8xg7 Qh5h4 Ra8e8 Nf6xe8+ Re7xe8 Qh4f6+ Kg7g8 Qf6xh6 Bd7b5 Qh6g5+ Kg8h8 Qg5f6+ Kh8g8
   6/5/2007 7:07:44 PM, Time for this analysis: 00:03:01, Rated time: 03:00

0 of 1 matching moves
6/5/2007 7:07:46 PM, Total time: 12:18:57 AM
Rated time: 03:00 = 180 Seconds

--------------------------------------------------------------------------------

Analysis from E:\rf6b.epd   
6/5/2007 6:48:48 PM Level: Infinite
Analyzing engine: Ktulu_75

1) Rf6                  
    Searching move: 
    Best move (Ktulu_75): g7xf6
    Not found in: 03:00
      7	00:00	      33.144	3.314.400	+2.52	g7xf6 Qh5xh6 f6f5 Bd3xf5 e6xf5 Ne3xd5 Re7e6 Qh6h5 Re6g6
      8	00:00	     109.350	1.562.142	-0.25	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4d3 Qe8f8 Qh6h5
      9	00:00	     322.599	1.240.765	+0.27	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4d3 Qe8f8 Qh6f4 Bc8d7 h3h4 Re7g7 h4h5 Rg7h7
     10	00:01	     782.206	965.686	+0.24	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4f3 Qe8f8 Qh6f4 Re7g7 h3h4 Qf8f6 c3c4 d5xc4
     11	00:01	   1.020.290	962.537	+0.24	g7xf6 e5xf6 Nh7xf6 Qh5xh6
     12	00:02	   2.161.484	1.044.195	+0.20	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4f3 Qe8f8 Qh6f4 Re7g7 Ra1e1 Bc8d7 Ne3xd5 e6xd5 Bf3xd5+ Kg8h7 Qf4h4+ Kh7g6 Bd5xb7 Ra8b8
     13	00:06	   6.646.404	1.149.896	+0.29	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4f3 Qe8f8 Qh6f4 Bc8d7 c3c4 d5xc4 Ne3xc4 Bd7b5 Nc4d6 Qf8g7 Nd6xb5 a6xb5 Qf4d6 Qg7g5 Qd6e5
     14	00:12	  14.603.749	1.154.446	+0.26	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4f3 Qe8f8 Qh6f4 Bc8d7 c3c4 d5xc4 Ne3xc4 Ra8c8 Nc4e5 Re7g7 Bf3xb7 Rc8c2 b2b3 Bd7b5 Bb7f3 Qf8d6 h3h4
     15	00:29	  32.724.220	1.129.200	 0.00	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4xf5 e6xf5 Ne3xd5 Re7e1+ Ra1xe1 Qe8xe1+ Kg1h2 f5f4 Qh6g5+ Kg8h8 Qg5h6+ Kh8g8
     16	00:44	  51.260.748	1.144.724	 0.00	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4xf5 e6xf5 Ne3xd5 Re7f7 Qh6g5+ Kg8f8 Qg5h6+ Rf7g7 Nd5b6 Qe8e2 Qh6f6+ Kf8g8 Qf6d8+ Kg8h7 Qd8h4+ Kh7g8 Qh4d8+
     17-	01:23	  93.317.449	1.148.042	-0.30	g7xf6
     17	01:58	 136.948.908	1.159.994	-0.38	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4xf5 e6xf5 Ne3xd5 Qe8f8 Nd5xe7+ Qf8xe7 Ra1f1 Qe7e6 Qh6g5+ Kg8f8 b2b3 Qe6e2 Qg5d8+ Kf8g7 Qd8c7+ Kg7f8 a2a4 Qe2d2
   6/5/2007 7:10:55 PM, Time for this analysis: 00:03:00, Rated time: 03:00

0 of 1 matching moves
6/5/2007 7:10:56 PM, Total time: 12:22:08 AM
Rated time: 03:00 = 180 Seconds

--------------------------------------------------------------------------------

Analysis from E:\rf6b.epd   
6/5/2007 6:48:48 PM Level: Infinite
Analyzing engine: Spike1.2

1) Rf6                  
    Searching move: 
    Best move (Spike1.2): g7xf6
    Not found in: 03:00
      2	00:00	         241	0	+1.43	g7xf6 Qh5xh6
      2	00:00	         465	0	+1.43	g7xf6 Qh5xh6
      3	00:00	       1.085	0	+2.26	g7xf6 Qh5xh6 f6f5
      3	00:00	       1.572	0	+2.26	g7xf6 Qh5xh6 f6f5
      4	00:00	       5.438	339.875	+2.28	g7xf6 Ne3g4 f6f5 Ng4xh6+ Kg8h8
      4	00:00	       5.808	363.000	+2.28	g7xf6 Ne3g4 f6f5 Ng4xh6+ Kg8h8
      5	00:00	      14.050	878.125	+2.23	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Ra1f1
      5	00:00	      14.793	477.193	+2.23	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Ra1f1
      6+	00:00	      34.895	742.446	+2.53	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Ra1f1 f7f5
      6+	00:00	      34.895	742.446	+2.53	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Ra1f1 f7f5
      6	00:00	      44.862	712.095	+2.55	g7xf6 Ne3g4 f6f5 Ng4xh6+ Kg8h8 Ra1f1 Bc8d7
      6	00:00	      46.281	734.619	+2.55	g7xf6 Ne3g4 f6f5 Ng4xh6+ Kg8h8 Ra1f1 Bc8d7
      7	00:01	      99.320	911.192	+2.51	g7xf6 Ne3g4 f6f5 Ng4xh6+ Kg8h8 Ra1f1 f7f6 Qh5xe8+ Re7xe8 Nh6f7+ Kh8g7
      7	00:01	     100.100	918.348	+2.51	g7xf6 Ne3g4 f6f5 Ng4xh6+ Kg8h8 Ra1f1 f7f6 Qh5xe8+ Re7xe8 Nh6f7+ Kh8g7
      8-	00:01	     123.745	877.624	+2.21	g7xf6 Ne3g4 f6f5 Ng4xh6+ Kg8h8 Ra1f1 f7f6 Qh5xe8+ Re7xe8 Nh6f7+ Kh8g7 Nf7d6
      8-	00:01	     174.321	858.724	+2.21	g7xf6 Ne3g4 f6f5 Ng4xh6+ Kg8h8 Ra1f1 f7f6 Qh5xe8+ Re7xe8 Nh6f7+ Kh8g7 Nf7d6
      8-	00:01	     179.709	820.589	+0.21	g7xf6 Ne3g4 f6f5 Ng4xh6+ Kg8h8 Ra1f1 f7f6 Qh5xe8+ Re7xe8 Nh6f7+ Kh8g7 Nf7d6
      8-	00:01	     276.170	841.981	+0.21	g7xf6 Ne3g4 f6f5 Ng4xh6+ Kg8h8 Ra1f1 f7f6 Qh5xe8+ Re7xe8 Nh6f7+ Kh8g7 Nf7d6
      8	00:01	     299.080	869.418	-0.63	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4d3 Bc8d7
      8	00:01	     340.248	870.199	-0.63	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4d3 Bc8d7
      9	00:01	     391.869	865.052	-0.77	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4f3 Re7h7 Qh6f6
      9	00:01	     442.319	884.638	-0.77	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4f3 Re7h7 Qh6f6
     10	00:01	     601.175	894.605	-0.52	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4f3 Re7h7 Qh6g5+ Rh7g7 Qg5h6
     10	00:01	     666.303	888.404	-0.52	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4f3 Re7h7 Qh6g5+ Rh7g7 Qg5h6
     11	00:01	     954.605	925.902	-0.29	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4d3 Bc8d7 b2b3 Re7g7 c3c4
     11	00:02	   1.037.787	706.458	-0.29	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4d3 Bc8d7 b2b3 Re7g7 c3c4
     12	00:05	   3.593.612	798.580	-0.13	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4c2 Bc8d7 Ra1f1 Bd7b5 Rf1f3 Re7g7
     12	00:05	   3.715.380	800.555	-0.13	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4c2 Bc8d7 Ra1f1 Bd7b5 Rf1f3 Re7g7
     13	00:08	   6.120.070	842.288	-0.13	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4d3 Bc8d7 Ra1e1 Qe8f8 Qh6h5 Re7h7 Qh5g6+ Rh7g7
     13	00:08	   6.342.370	845.536	-0.13	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4d3 Bc8d7 Ra1e1 Qe8f8 Qh6h5 Re7h7 Qh5g6+ Rh7g7
     14	00:13	  11.362.839	917.023	-0.03	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4d3 Qe8f8 Qh6xf8+ Kg8xf8 g2g4 Bc8d7 g4xf5 e6xf5 Ne3xd5 Re7g7+ Kg1h2 Ra8e8
     14	00:13	  11.825.255	918.395	-0.03	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4d3 Qe8f8 Qh6xf8+ Kg8xf8 g2g4 Bc8d7 g4xf5 e6xf5 Ne3xd5 Re7g7+ Kg1h2 Ra8e8
     15	00:22	  20.954.428	963.377	-0.04	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4d3 Qe8f8 Qh6f4 Bc8d7 c3c4 Qf8b8 Qf4xb8+ Ra8xb8 c4xd5 f5f4 d5d6 Re7g7
     15	00:23	  21.730.453	963.741	-0.04	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4d3 Qe8f8 Qh6f4 Bc8d7 c3c4 Qf8b8 Qf4xb8+ Ra8xb8 c4xd5 f5f4 d5d6 Re7g7
     16	00:44	  42.703.361	987.657	-0.04	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4d3 Bc8d7 c3c4 Re7h7 Qh6f6 Qe8e7 Qf6xe7 Rh7xe7 c4xd5 f5f4 d5d6 Re7g7
     16	00:45	  44.354.255	987.295	-0.04	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4d3 Bc8d7 c3c4 Re7h7 Qh6f6 Qe8e7 Qf6xe7 Rh7xe7 c4xd5 f5f4 d5d6 Re7g7
     17	01:28	  84.921.919	973.082	-0.30	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4f3 Re7h7 Qh6f6 Bc8d7 c3c4 Rh7f7 Qf6g6+ Rf7g7 Qg6xe8+ Ra8xe8 c4xd5 f5f4 Ne3g4 Kg8f8 d5xe6 Bd7xe6
     17	01:39	  95.251.800	970.194	-0.30	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4f3 Re7h7 Qh6f6 Bc8d7 c3c4 Rh7f7 Qf6g6+ Rf7g7 Qg6xe8+ Ra8xe8 c4xd5 f5f4 Ne3g4 Kg8f8 d5xe6 Bd7xe6
     18-	01:55	 111.241.161	974.406	-0.60	g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4f3 Re7h7 Qh6f6 Bc8d7 c3c4 Rh7f7 Qf6g6+ Rf7g7 Qg6xe8+ Ra8xe8 c4xd5 f5f4 Ne3g4 Kg8f8 d5xe6 Bd7xe6
   6/5/2007 7:14:09 PM, Time for this analysis: 00:03:01, Rated time: 03:00

0 of 1 matching moves
6/5/2007 7:14:10 PM, Total time: 12:25:22 AM
Rated time: 03:00 = 180 Seconds

Dann Corbit · Post by **Dann Corbit** » Wed Jun 06, 2007 4:36 am

Since Shredder seemed to have the best grasp of this position, I decided to let him think about it for ten minutes after the key move is played to see what the alternatives are:
[/code]
Analysis from E:\rf6b.epd
6/5/2007 7:24:14 PM Level: 600 Seconds
Analyzing engine: Shredder9UCI

1) Rf6
Searching move:
Best move (Shredder9UCI): Nh7xf6
Not found in: 10:00
2/3 00:00 85 187 +1.32 Nh7xf6 e5xf6
3/5- 00:00 325 694 +1.07 Nh7xf6 e5xf6
3/5- 00:00 358 764 +0.51 Nh7xf6 e5xf6
3/5 00:00 464 991 +0.51 Nh7xf6 e5xf6
3/7+ 00:00 713 1.523 +0.52 g7xf6
3/7+ 00:00 862 1.841 +0.87 g7xf6
3/7 00:00 1.042 2.226 +1.76 g7xf6 Qh5xh6 f6f5
4/7- 00:00 1.353 2.891 +1.26 g7xf6 Qh5xh6
4/7 00:00 1.809 3.865 +1.26 g7xf6 Qh5xh6 f6f5 Ne3g4
5/14 00:00 3.542 7.568 +1.17 g7xf6 Bd3xh7+ Kg8xh7 Ne3g4 Qe8f8 Ng4xf6+ Kh7h8
6/19- 00:00 5.499 11.750 +0.92 g7xf6 Bd3xh7+
6/19 00:00 8.802 18.185 +0.92 g7xf6 Bd3xh7+ Kg8xh7 Ne3g4 Qe8f8
7/21 00:00 32.779 61.730 +0.81 g7xf6 Bd3xh7+ Kg8xh7 Ne3g4 Qe8f8 Ng4xf6+ Kh7h8 Nf6g4 Bc8d7 Ng4xh6 f7f6 Nh6f7+ Kh8g8
8/21 00:00 63.317 109.544 +0.95 g7xf6 Bd3xh7+ Kg8xh7 Ne3g4 Qe8f8 Ng4xf6+ Kh7h8 Nf6g4 Bc8d7 Ra1f1 Bd7b5 Rf1f6 Qf8g7 Rf6xh6+ Kh8g8
9/25- 00:00 71.367 120.349 +0.70 g7xf6 Bd3xh7+
9/25- 00:01 118.470 172.445 +0.20 g7xf6 Bd3xh7+
9/27 00:01 174.121 222.946 -0.10 g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4f3 Bc8d7 Qh6f6 Qe8f8 Ne3xd5 e6xd5 Bf3xd5+ Kg8h7
10/25 00:01 307.730 303.182 -0.10 g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4f3 Bc8d7 Qh6f6 Qe8f8 Ne3xd5 e6xd5 Bf3xd5+ Kg8h7
11/30 00:01 534.415 384.471 +0.07 g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4f3 Bc8d7 Ra1e1 Qe8f8 Qh6xf8+ Kg8xf8 Kg1f2 Re7g7
12/33- 00:02 774.192 423.518 -0.18 g7xf6 e5xf6
12/33 00:02 1.031.618 465.111 -0.32 g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4xf5 e6xf5 Ne3xd5 Re7e6 Qh6g5+ Kg8f8 Qg5xf5+ Kf8g7 Ra1f1 Re6g6 Qf5d3 Kg7h8
13/32- 00:03 1.456.034 490.577 -0.57 g7xf6 e5xf6
13/35 00:06 2.845.573 463.448 -0.58 g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4xf5 e6xf5 Ne3xd5 Re7f7 Qh6g5+ Kg8f8 Qg5h4 Kf8g8 Qh4g3+
14/37 00:10 5.095.206 487.439 -0.79 g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4xf5 e6xf5 Ne3xd5 Qe8f8 Qh6g6+ Kg8h8 Nd5xe7 Qf8xe7
15/39 00:18 9.877.774 536.660 -0.60 g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4xf5 e6xf5 Ne3xd5 Qe8f8 Nd5xe7+ Qf8xe7 Qh6g6+ Kg8h8 Qg6g3 Bc8e6 Ra1e1 Ra8e8
16/39 00:30 16.926.640 566.297 -0.75 g7xf6 e5xf6 Nh7xf6 Qh5xh6 Nf6e4 Bd3xe4 f7f5 Be4xf5 e6xf5 Ne3xd5 Qe8f8 Qh6h4 Re7d7 Ra1e1 Rd7xd5 Re1e7 Qf8xe7 Qh4xe7 Bc8d7 Qe7g5+ Kg8h7 Qg5h5+ Kh7g7 g2g3
17/48- 00:53 30.354.020 572.717 -1.00 g7xf6 e5xf6
17/48- 00:55 31.843.295 572.628 -1.50 g7xf6 e5xf6
17/48 01:20 47.559.486 592.988 -5.10 g7xf6 Bd3xh7+ Kg8xh7 Ne3g4 Qe8f8 Ra1f1 f6f5 Ng4f6+ Kh7h8 Rf1f3 Qf8g7 Rf3g3 Bc8d7 Rg3xg7 Kh8xg7 Qh5h4 Bd7c6 Nf6h5+ Kg7f8 Qh4f6 Re7e8 Qf6xh6+ Kf8e7 Qh6f6+ Ke7f8 Nh5g7 b7b6 Ng7xe8
17/48+ 01:29 53.131.187 597.295 -5.09 g7g6
17/48+ 01:33 56.266.569 601.183 -4.74 g7g6
17/48 01:57 70.237.307 601.846 -4.74 g7g6 Qh5xh6
17/48+ 02:07 76.751.280 601.532 -4.73 Nh7xf6
17/48+ 02:10 78.395.338 603.695 -4.38 Nh7xf6
17/48 03:28 121.761.529 585.656 -4.37 Nh7xf6 e5xf6 Re7d7 f6xg7
18/46 05:56 205.983.472 578.428 -4.60 Nh7xf6 e5xf6 Bc8d7 Ne3g4 Qe8f8 Qh5h4
19/43 07:43 266.830.119 576.462 -4.65 Nh7xf6 e5xf6 Bc8d7 Ne3g4 Qe8f8 Qh5h4 Re7e8 Ra1f1 Bd7b5 f6xg7 Qf8xg7 Ng4xh6+ Kg8f8 Rf1xf7+ Qg7xf7 Nh6xf7 Kf8xf7 Qh4h7+ Kf7f6 Bd3c2 b7b6 Kg1h2 Re8g8 g2g4
6/5/2007 7:34:20 PM, Time for this analysis: 00:10:01, Rated time: 10:00

0 of 1 matching moves
6/5/2007 7:34:22 PM, Total time: 12:10:07 AM
Rated time: 10:00 = 600 Seconds
[/code]

It appears that capture with the knight dies less quickly than with the pawn, but still clearly a losing position.

S.Taylor · Post by **S.Taylor** » Wed Jun 06, 2007 3:35 pm

So how does black end up after best play? (I didn't look it all through as that would take me hours).

If it is as you seem to show (Dan with your tests), then this might be an excellent test position for computers.

Dann Corbit · Post by **Dann Corbit** » Wed Jun 06, 2007 8:09 pm

S.Taylor wrote:So how does black end up after best play? (I didn't look it all through as that would take me hours).

If it is as you seem to show (Dan with your tests), then this might be an excellent test position for computers.

Black is sunk.

The interesting thing is that none of the top programs could find the best key move starting as white, but most of them realized that they were toast when analyzing as black after the key move had been made.

Unfortunately, there are two other clearly winning moves, and so it is not a great test position. On the other hand, it was really fun to analyze it.

George Tsavdaris · Post by **George Tsavdaris** » Thu Jun 07, 2007 12:05 am

Dann Corbit wrote: Unfortunately, there are two other clearly winning moves, and so it is not a great test position. On the other hand, it was really fun to analyze it.

Yes, this was from a Tal's game.

So let's make it a really great test position where computers can't solve it (look at each variation i give, it has truly marvelous different combinations each one):

Let's just move the King to a3. That means:
White to play 1.Rf6!! and win. Now other moves are not winning easily as before....
[d]r1b1q1k1/1p2rppn/p3p2p/3pP2Q/3P4/K1PBN2P/PP4P1/R4R2 w - - 0 1

Now again 1.Rf6!! wins since we have:

1...gxf6 2.Bxh7 Kxh7 3.Ng4 Qf8 4.Rf1 and now:
--4...f5 5.Nf6+ Kg7 6.g4! Re8+(6...Rc7+ 7.Kb3 and now on 7...Qh8 we have 8.g5 1-0 and on 7...Bd7 8.Rg1 +-) 7.Kb3 Qh8 8.Rg1 fxg4 9.hxg4! +-
--4...Re8+ 5.Kb3 f5 6.Nf6+ Kg7 7.g4 +-

1...Nxf6 2.exf6 Rc7 3.Ng4 Qf8+ and now:

--3...e5 4.fxg7 and now:
----4...Qe7+ 5.Kb3 Rc6 6.Nxh6+ Kxg7 7.Ng8 Qc7(7...Qe6 8.Qg5+ Kf8 9.Rf1 e4 10.Rf6 Qe8 11.Be2 Bd7 12.Bh5+ Be6 13.Qh6+ +-) 8.Qh7+ Kf8 9.Qh8 Be6 10.Nf6+ Ke7 11.Qxa8 e4 12.Rf1 Rb6+ 13.Ka3 Qd6+ 14.b4 Qc6 15.Kb2 exd3 16.Rf2 black is almost zugzwang and it's 1-0(for example 16...a5 17.Ng8+ Kd7 18.Qxa5 Ra6 19.Qc5 1-0)
----4...Rc6 5.Nxe5 Rf6 6.Re1 a5 7.Kb3 a4+ 8.Kc2 Kxg7 9.g4 ±
----4...Bxg4 5.Qxh6 f5 6.hxg4 e4(6...Qe7+ 7.Kb3 Qxg7 8.Qe6+ Qf7 9.Qxe5 Re7 10.Qg3 +-) 7.Qh8+ Kf7 8.Qh7 Qg8 9.Qxf5+ Ke8 10.Qg6+ Kd7 11.Rf1 Rd8 12.Qf5+ Kc6 13.Bxe4 Rxg7(13...dxe4 leads to a nice endgame win) 14.Bf3 Rg5 15.Qf6+ ±

--3...Qf8+ 4.Kb3 Bd7 5.Rf1 Bb5(5...Rc4 6.Kc2! wins immediately.) 6.Bxb5 axb5 7.fxg7 Qxg7 8.Rf6+ +-

1...Qd8 2.Ng4 Nf6 3.exf6 Rc7 4.Kb3! 1-0

1...Qf8 2.Bxh7! Kxh7 3.Raf1 a5(3...Bd7 4.Ng4 g6(4...Bb5 5.Rxh6 1-0) 5.Rxg6 fxg6 6.Rxf8 gxh5 7.Nf6+ Kg6 8.Rxa8 +-) 4.Ng4! a4 5.b4 axb3 6.Kxb3 Rc7 7.a4 1-0

1...Rc7 2.Bxh7! Kxh7 3.Raf1 g6 4.Qh4 +-

Terry McCracken · Post by **Terry McCracken** » Thu Jun 07, 2007 12:17 am

George Tsavdaris wrote:White to play and win. A great move by M.Tal....
Other moves may (or may not) also win, but why make things more complex that they are?
1.Rf6!! wins by force.

After 1.Rf6!! gxf6(1...Qf8 is met by 2.Bxh7!!) 2.Bxh7! Kxh7 3.Ng4 Qf8 4.Rf1 f5 5.Nf6+ Kh8 6.Rf3 1-0

[d]r1b1q1k1/1p2rppn/p3p2p/3pP2Q/3P4/2PBN2P/PP4P1/R4RK1 w - - 0 1

Do you have the pgn, or at least the other player?

I'd like to look at it, thanks!

Terry

George Tsavdaris · Post by **George Tsavdaris** » Thu Jun 07, 2007 1:08 am

Terry McCracken wrote: Do you have the pgn, or at least the other player?

I'd like to look at it, thanks!

[Event "Riga"]
[Site "Riga"]
[Date "1949.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Mikhail Tal"]
[Black "Leonov"]
[ECO "B13"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "49"]

1.e4 c6 2.d4 d5 3.exd5 cxd5 4.Bd3 Nf6 5.h3 h6 6.Bf4 e6 7.Nf3
Bd6 8.Bxd6 Qxd6 9.c3 Nc6 10.O-O O-O 11.Qe2 Re8 12.Ne5 Qc7
13.f4 Nxe5 14.fxe5 Nh7 15.Qh5 Re7 16.Na3 a6 17.Nc2 Qd7 18.Ne3
Qe8 19.Rf6 Qf8 20.Rf4 Bd7 21.Ng4 Be8 22.Nf6+ Nxf6 23.exf6 Rc7
24.fxg7 Kxg7 25.Qe5+ 1-0

And imagine that Tal was 13 years old then. What super Chess genius he was!

Terry McCracken · Post by **Terry McCracken** » Thu Jun 07, 2007 1:19 am

George Tsavdaris wrote:
Terry McCracken wrote: Do you have the pgn, or at least the other player?

I'd like to look at it, thanks!
[Event "Riga"]
[Site "Riga"]
[Date "1949.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Mikhail Tal"]
[Black "Leonov"]
[ECO "B13"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "49"]

1.e4 c6 2.d4 d5 3.exd5 cxd5 4.Bd3 Nf6 5.h3 h6 6.Bf4 e6 7.Nf3
Bd6 8.Bxd6 Qxd6 9.c3 Nc6 10.O-O O-O 11.Qe2 Re8 12.Ne5 Qc7
13.f4 Nxe5 14.fxe5 Nh7 15.Qh5 Re7 16.Na3 a6 17.Nc2 Qd7 18.Ne3
Qe8 19.Rf6 Qf8 20.Rf4 Bd7 21.Ng4 Be8 22.Nf6+ Nxf6 23.exf6 Rc7
24.fxg7 Kxg7 25.Qe5+ 1-0

And imagine that Tal was 13 years old then. What super Chess genius he was!

Indeed he was! We lost a great player and person 15 years ago this July.

Thanks for the game.

Terry

Dan · Post by **Dan** » Thu Jun 07, 2007 5:40 am

CMX_Aggressive finds the move in 1 sec but for some reason does not consider black's response ...gxf6

Cel 1.7 gHz

Time Depth Score Positions Moves
0:00 1/4 4.19 9367 1.Ng4 f5 2.Nxh6+ gxh6 3.Rxf5 exf5 4.Qxh6
0:00 1/5 4.10 12628 1.Ng4 Kh8 2.Nxh6 g6 3.Nxf7+ Rxf7 4.Rxf7 Qxf7 5.Bxg6
0:00 1/6 3.74 30748 1.Ng4 f5 2.exf6ep Qxh5 3.fxe7 Qe8 4.c4 Qxe7 5.cxd5
0:00 1/6 3.86 35398 1.Bxh7+ Kxh7 2.Ng4 f5 3.Nf6+ gxf6 4.Qxe8 Rxe8 5.exf6
0:00 1/7 3.62 92623 1.Bxh7+ Kxh7 2.c4 dxc4 3.Nxc4 g6 4.Qh4 b5 5.Ne3
0:01 1/7 4.61 155385 1.Rf6 Qf8 2.Ng4 Nxf6 3.exf6 Rd7 4.fxg7 Qxg7 5.Qxh6 Qxh6 6.Nxh6+ Kg7
0:03 1/8 4.73 326292 1.Rf6 g6 2.Qxh6 Qf8 3.Ng4 Qxh6 4.Nxh6+ Kg7 5.Nxf7 Rxf7 6.Rxf7+ Kxf7 7.Rf1+ Kg7
0:05 1/9 4.82 596662 1.Rf6 g6 2.Rxg6+ fxg6 3.Bxg6 Qf8 4.Rf1 Qg7 5.Nxd5 exd5 6.c4
0:21 1/10 5.50 2529652 1.Rf6 Qf8 2.Ng4 gxf6 3.exf6 Rc7 4.Nxh6+ Kh8 5.Ng4 Qg8 6.Qh6 e5 7.Bxh7
0:58 1/11 5.60 6335255 1.Rf6 g6 2.Qxh6 Qf8 3.Ng4 Qxh6 4.Nxh6+ Kg7 5.Nxf7 Nxf6 6.exf6+ Kxf6 7.Ne5 g5 8.Re1
2:04 1/12 6.06 13647607 1.Rf6 g6 2.Qxh6 Qf8 3.Ng4 Kh8 4.Raf1 Qg7 5.Bxg6 Qxh6 6.Nxh6 Nxf6 7.Nxf7+ Rxf7 8.Bxf7
4:00 1/13 6.08 26243471 1.Rf6 g6 2.Qxh6 Qf8 3.Ng4 Qxh6 4.Nxh6+ Kg7 5.Nxf7 Nxf6 6.exf6+ Kxf6 7.Ne5 g5 8.Rf1+ Kg7 9.c4 dxc4 10.Nxc4
13:20 2/14 6.97 92840121 1.Rf6 g6 2.Qxh6 Qf8 3.Qh4 Qg7 4.Raf1 Bd7 5.Bxg6 fxg6 6.Rxg6 Qxg6 7.Qxe7 Qg7 8.Qxg7+ Kxg7 9.c4 Ng5 10.cxd5

A pretty sacrifice by M.Tal.

A pretty sacrifice by M.Tal.

Re: A pretty sacrifice by M.Tal.

Re: A pretty sacrifice by M.Tal.

Re: A pretty sacrifice by M.Tal.

Re: A pretty sacrifice by M.Tal.

Re: A pretty sacrifice by M.Tal.

Re: A pretty sacrifice by M.Tal.

Re: A pretty sacrifice by M.Tal.

Re: A pretty sacrifice by M.Tal.

Re: A pretty sacrifice by M.Tal.