Test Position: Rook Sac from WCRCC 2013

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zullil
Posts: 6442
Joined: Tue Jan 09, 2007 12:31 am
Location: PA USA
Full name: Louis Zulli

Test Position: Rook Sac from WCRCC 2013

Post by zullil »

[D]r3kb1r/1p4pp/2q1pp2/1p2Q3/8/2P5/PP2B1PP/R4R1K w kq - 0 25

Against ArasanX, NightmareX played Rxf6. What do other engines "think?"

Here's the full game:

[pgn]
[Event "AWCRCC"]
[Site "Internet Chess Club"]
[Date "2013.07.20"]
[Round "6"]
[White "NightmareX"]
[Black "ArasanX"]
[Result "1/2-1/2"]
[ICCResult "Game drawn by repetition"]
[WhiteElo "2774"]
[BlackElo "2433"]
[Opening "Caro-Kann: advance variation"]
[ECO "B12"]
[NIC "CK.04"]
[Time "14:36:23"]
[TimeControl "1500+4"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nf3 e6 5. Be2 Nd7 6. O-O Bg6 7. Nbd2 Ne7 8.

Nh4 c5 9. c3 Qb6 10. Ndf3 Be4 11. dxc5 Qxc5 12. Nd4 Nc6 13. Be3 Qe7 14. f3

Qxh4 15. Bf2 Qg5 16. fxe4 dxe4 17. Qa4 Ncxe5 18. Nb5 Qd8 19. Qxe4 a6 20. Bg3

Qb6+ 21. Kh1 axb5 22. Bxe5 Qc6 23. Qe3 Nxe5 24. Qxe5 f6 25. Rxf6 gxf6 26.

Qxf6 Rg8 27. Bh5+ Rg6 28. Bxg6+ hxg6 29. Rf1 Kd7 30. Qf7+ Kd6 31. Rd1+ Ke5 32. h4 Rc8 33. Rd4 Bh6 34. Qxg6 Rh8 35. Rb4 Kd6 36. Qf6 Qe8 37. a4 Be3 38.

Re4 Ba7 39. Qe5+ Kd7 40. Qxb5+ Kc8 41. Qe5 Qd8 42. Rc4+ Kd7 43. g3 Qb8 44.

Qg7+ Kd6 45. Rb4 Qf8 46. Qxf8+ Rxf8 47. Rxb7 e5 48. Rxa7 e4 49. b3 e3 50.

Ra6+ Kd5 51. c4+ Ke5 52. Ra5+ Ke4 53. Ra6 Rf1+ 54. Kg2 e2 55. Re6+ Kd3 56.

g4 e1=Q 57. Rxe1 Rxe1 58. h5 Ke3 59. b4 Kf4 60. b5 Re2+ 61. Kf1 Kf3 62. a5

Ra2 63. Ke1 Ke3 64. Kf1 Rf2+ 65. Kg1 Kf3 66. b6 Rg2+ 67. Kf1 Ra2 68. Ke1 Ke3 69. Kd1 Kd3 70. Kc1 Kc3 71. Kd1 Kd3 72. Kc1 Kc3 73. Kd1 Kd3 {Game drawn by repetition} 1/2-1/2
[/pgn]
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kgburcham
Posts: 2016
Joined: Sun Feb 17, 2008 4:19 pm

Re: Test Position: Rook Sac from WCRCC 2013

Post by kgburcham »

[D] r3kb1r/1p4pp/2q1pp2/1p2Q3/8/2P5/PP2B1PP/R4R1K w kq -

CPU0: GenuineIntel Intel64 Family 6 Model 44 Stepping 2 3701 MHz
CPU1: GenuineIntel Intel64 Family 6 Model 44 Stepping 2 3701 MHz
CPU2: GenuineIntel Intel64 Family 6 Model 44 Stepping 2 3701 MHz
CPU3: GenuineIntel Intel64 Family 6 Model 44 Stepping 2 3701 MHz
CPU4: GenuineIntel Intel64 Family 6 Model 44 Stepping 2 3701 MHz
CPU5: GenuineIntel Intel64 Family 6 Model 44 Stepping 2 3701 MHz
Engine: Deep Rybka 4.1 SSE42 x64 (4096 MB)
by Vasik Rajlich

20.02 1:35 +0.81++ 25.Rxf6 gxf6 (72.036.197) 756 TB:9
20.01 1:54 +0.96++ 25.Rxf6 gxf6 (84.319.235) 733 TB:850

Engine: Houdini 3 Pro x64 (4096 MB)
by Robert Houdart
14/62 0:01 +0.84 25.Rxf6 gxf6 (18.714.988) 14598
15/62 0:01 +0.84 25.Rxf6 gxf6 (25.413.806) 14940
16/62 0:02 +0.84 25.Rxf6 gxf6 (35.946.910) 15527
17/62 0:03 +0.84 25.Rxf6 gxf6 (51.919.899) 16189
18/73 0:07 +0.94++ 25.Rxf6 (137.715.587) 18030
18/73 0:07 +1.14++ 25.Rxf6 (141.859.826) 17993
18/75 0:09 +1.56 25.Rxf6 gxf6 (172.404.181) 17642
19/75 0:10 +1.44-- 25.Rxf6 gxf6 (181.920.872) 17561
19/75 0:11 +1.49 25.Rxf6 gxf6 (207.613.754) 17437
20/75 0:12 +1.56 25.Rxf6 gxf6 (226.111.908) 17413
21/79 0:19 +1.67++ 25.Rxf6 (342.207.426) 17574
21/79 0:22 +1.77 25.Rxf6 gxf6 (389.781.263) 17532
22/79 0:26 +1.77 25.Rxf6 gxf6 (473.974.360) 17595
23/79 0:39 +1.88++ 25.Rxf6 (686.695.407) 17522
23/79 0:49 +1.66-- 25.Rxf6 gxf6 (898.138.658) 18083
23/79 1:40 +1.79 25.Rxf6 gxf6 (1.862.580.851) 18551 TB:1

[Event "AWCRCC"]
[Site "Internet Chess Club"]
[Date "2013.07.20"]
[Round "6"]
[White "NightmareX"]
[Black "ArasanX"]
[WhiteElo "2774"]
[BlackElo "2433"]
[ECO "B12"]
[Result "1/2-1/2"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nf3 e6 5. Be2 Nd7 6. O-O Bg6
7. Nbd2 Ne7 8. Nh4 c5 9. c3 Qb6 10. Ndf3 Be4 11. dxc5 Qxc5
12. Nd4 Nc6 13. Be3 Qe7 14. f3 Qxh4 15. Bf2 Qg5 16. fxe4
dxe4 17. Qa4 Ncxe5 18. Nb5 Qd8 19. Qxe4 a6 20. Bg3 Qb6+
21. Kh1 axb5 22. Bxe5 Qc6 23. Qe3 Nxe5 24. Qxe5 f6 25. Rxf6
gxf6 26. Qxf6 Rg8 27. Bh5+ Rg6 28. Bxg6+ hxg6 29. Rf1 Kd7
30. Qf7+ Kd6 31. Rd1+ Ke5 32. h4 Rc8 33. Rd4 Bh6 34. Qxg6
Rh8 35. Rb4 Kd6 36. Qf6 Qe8 37. a4 Be3 38. Re4 Ba7 39. Qe5+
Kd7 40. Qxb5+ Kc8 41. Qe5 Qd8 42. Rc4+ Kd7 43. g3 Qb8
44. Qg7+ Kd6 45. Rb4 Qf8 46. Qxf8+ Rxf8 47. Rxb7 e5
48. Rxa7 e4 49. b3 e3 50. Ra6+ Kd5 51. c4+ Ke5 52. Ra5+ Ke4
53. Ra6 Rf1+ 54. Kg2 e2 55. Re6+ Kd3 56. g4 e1=Q 57. Rxe1
Rxe1 58. h5 Ke3 59. b4 Kf4 60. b5 Re2+ 61. Kf1 Kf3 62. a5
Ra2 63. Ke1 Ke3 64. Kf1 Rf2+ 65. Kg1 Kf3 66. b6 Rg2+
67. Kf1 Ra2 68. Ke1 Ke3 69. Kd1 Kd3 70. Kc1 Kc3 71. Kd1 Kd3
72. Kc1 Kc3 73. Kd1 Kd3 {Game drawn by repetition} 1/2-1/2
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zullil
Posts: 6442
Joined: Tue Jan 09, 2007 12:31 am
Location: PA USA
Full name: Louis Zulli

Re: Test Position: Rook Sac from WCRCC 2013

Post by zullil »

kgburcham wrote:[D] r3kb1r/1p4pp/2q1pp2/1p2Q3/8/2P5/PP2B1PP/R4R1K w kq -

CPU0: GenuineIntel Intel64 Family 6 Model 44 Stepping 2 3701 MHz
CPU1: GenuineIntel Intel64 Family 6 Model 44 Stepping 2 3701 MHz
CPU2: GenuineIntel Intel64 Family 6 Model 44 Stepping 2 3701 MHz
CPU3: GenuineIntel Intel64 Family 6 Model 44 Stepping 2 3701 MHz
CPU4: GenuineIntel Intel64 Family 6 Model 44 Stepping 2 3701 MHz
CPU5: GenuineIntel Intel64 Family 6 Model 44 Stepping 2 3701 MHz
Engine: Deep Rybka 4.1 SSE42 x64 (4096 MB)
by Vasik Rajlich

20.02 1:35 +0.81++ 25.Rxf6 gxf6 (72.036.197) 756 TB:9
20.01 1:54 +0.96++ 25.Rxf6 gxf6 (84.319.235) 733 TB:850

Engine: Houdini 3 Pro x64 (4096 MB)
by Robert Houdart
14/62 0:01 +0.84 25.Rxf6 gxf6 (18.714.988) 14598
15/62 0:01 +0.84 25.Rxf6 gxf6 (25.413.806) 14940
16/62 0:02 +0.84 25.Rxf6 gxf6 (35.946.910) 15527
17/62 0:03 +0.84 25.Rxf6 gxf6 (51.919.899) 16189
18/73 0:07 +0.94++ 25.Rxf6 (137.715.587) 18030
18/73 0:07 +1.14++ 25.Rxf6 (141.859.826) 17993
18/75 0:09 +1.56 25.Rxf6 gxf6 (172.404.181) 17642
19/75 0:10 +1.44-- 25.Rxf6 gxf6 (181.920.872) 17561
19/75 0:11 +1.49 25.Rxf6 gxf6 (207.613.754) 17437
20/75 0:12 +1.56 25.Rxf6 gxf6 (226.111.908) 17413
21/79 0:19 +1.67++ 25.Rxf6 (342.207.426) 17574
21/79 0:22 +1.77 25.Rxf6 gxf6 (389.781.263) 17532
22/79 0:26 +1.77 25.Rxf6 gxf6 (473.974.360) 17595
23/79 0:39 +1.88++ 25.Rxf6 (686.695.407) 17522
23/79 0:49 +1.66-- 25.Rxf6 gxf6 (898.138.658) 18083
23/79 1:40 +1.79 25.Rxf6 gxf6 (1.862.580.851) 18551 TB:1
Stockfish switches to Bh5+. Do Rybka and Houdini do so too?

Code: Select all

33   +0.97   08:55   4580M  Bh5+ Ke7 Qe3 Rd8 Bf3 Qa6 Rad1 Rd6 Qc5 Kf7 Bh5+ g6 
                            Qe5 Be7 Rxd6 Qxd6 Rxf6+ Ke8 Qxd6 Bxd6 Rxe6+ Kd7 Bg4 
                            Kc7 g3 Rf8 Kg2 Bc5 Re2 Rd8 a3 Rd3 Bf3 Be3 Re1 Bc5 
                            Re5 Rd2+ Kf1 b6 Re2 Rxe2 
34   +0.91   13:25   6803M  Bh5+ Ke7 Qe3 Rd8 Bf3 Qa6 Rad1 Rd6 Qc5 Kf7 Bh5+ g6 
                            Qe5 Be7 Rxd6 Qxd6 Rxf6+ Ke8 Qxd6 Bxd6 Rxe6+ Kd7 Bg4 
                            Kc7 g3 Rf8 Kg2 Bc5 Re2 Rd8 Kf3 h5 Bh3 Rf8+ Kg2 Rd8 
                            b4 Bd6 Be6 Re8 Kf3 Kb6 Re4 g5 Re2 Bc7 Re1 
35   +0.97   20:36  10391M  Bh5+ Ke7 Qe3 Rd8 Bf3 Qa6 Rad1 Rd6 Qc5 Kf7 Bh5+ g6 
                            Qe5 Be7 Rxd6 Qxd6 Rxf6+ Ke8 Qxd6 Bxd6 Rxe6+ Kd7 Bg4 
                            Kc7 g3 Ra8 a3 Rf8 Kg2 Bc5 Bf3 Rd8 Re5 Rd2+ Kf1 b6 
                            Re2 Rxe2
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jdart
Posts: 4366
Joined: Fri Mar 10, 2006 5:23 am
Location: http://www.arasanchess.org

Re: Test Position: Rook Sac from WCRCC 2013

Post by jdart »

I think it was a good move: White has at least enough compensation for the material. I think Nightmare missed a win later on: see http://arasanchess.org/games.shtml.

--Jon
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kgburcham
Posts: 2016
Joined: Sun Feb 17, 2008 4:19 pm

Re: Test Position: Rook Sac from WCRCC 2013

Post by kgburcham »

Stockfish switches to Bh5+. Do Rybka and Houdini do so too?
6 processor(s) found, POPCNT available
NUMA configuration with 1 node(s), offset 0
Engine: Houdini 3 Pro x64 (4096 MB)
by Robert Houdart

27 22:31 +1.91 25.Rxf6 gxf6 (24.783.331.055) 18336
27 22:31 +0.56 25.Bh5+ Ke7 (24.783.331.055) 18336
27 22:31 +0.33 25.Qg3 Kf7 (24.783.331.055) 18336
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zullil
Posts: 6442
Joined: Tue Jan 09, 2007 12:31 am
Location: PA USA
Full name: Louis Zulli

Re: Test Position: Rook Sac from WCRCC 2013

Post by zullil »

kgburcham wrote:
Stockfish switches to Bh5+. Do Rybka and Houdini do so too?
6 processor(s) found, POPCNT available
NUMA configuration with 1 node(s), offset 0
Engine: Houdini 3 Pro x64 (4096 MB)
by Robert Houdart

27 22:31 +1.91 25.Rxf6 gxf6 (24.783.331.055) 18336
27 22:31 +0.56 25.Bh5+ Ke7 (24.783.331.055) 18336
27 22:31 +0.33 25.Qg3 Kf7 (24.783.331.055) 18336
Stockfish returns to Rxf6, but it takes a long time to see that it wins:

Code: Select all

37   +0.91 1:04:11  32150M  Bh5+ Ke7 Qf4 Rd8 a4 Qc4 Qf3 Qc6 axb5 Qxf3 Bxf3 Kf7 
                            Ra7 Rd7 Rxb7 Rxb7 Bxb7 Bd6 g3 Rd8 Bc6 Be5 Kg2 Ke7 
                            Rf2 g5 Re2 Kd6 Rd2+ Ke7 Rxd8 Kxd8 b6 g4 Bb5 f5 Bc4 
                            Kd7 Kf2 
38   +1.15 1:20:11  40580M  Rxf6 gxf6 Qxf6 Rg8 Bh5+ Rg6 Bxg6+ hxg6 Rf1 Kd7 Qf7+ 
                            Kd6 Rd1+ Ke5 h3 Rc8 Qh7 Qe4 Qh8+ Kf5 Rf1+ Kg5 Rxf8 
                            Rxf8 Qxf8 b4 Qc5+ Kf4 cxb4 Qe1+ Qg1 Qxb4 Qf2+ Ke5 
                            Kg1 Qe4 Qd2 Kf6 Kf2 e5 Qc3 Qh4+ Kf1 Qf4+ Qf3 Ke6 
                            Qxf4 exf4 Kf2 
39   +1.09 1:34:24  48816M  Rxf6 gxf6 Qxf6 Rg8 Bh5+ Rg6 Bxg6+ hxg6 Rf1 Kd7 Qf7+ 
                            Kd6 Rd1+ Ke5 h3 Rc8 Qh7 Qe4 Qh8+ Kf5 Rf1+ Kg5 Rxf8 
                            Rxf8 Qxf8 Qe2 Qc5+ Kf6 Kh2 Qxb2 Qf8+ Ke5 Qg7+ Kf5 
                            Qf7+ Kg5 Qxe6 Qxc3 Qd5+ Kf4 Qf7+ Kg5 Qxb7 Qe5+ g3 
                            Qe2+ Qg2 Qc4 Qd2+ Kf6 Kg1 g5 
40   +1.09 1:51:05  58415M  Rxf6 gxf6 Qxf6 Rg8 Bh5+ Rg6 Bxg6+ hxg6 Rf1 Kd7 Qf7+ 
                            Kd6 Rd1+ Ke5 h3 Rc8 Qh7 Qe4 Qh8+ Kf5 Rf1+ Kg5 Rxf8 
                            Rxf8 Qxf8 Qe1+ Kh2 Qe5+ g3 Qe2+ Kg1 e5 Qf2 Qd3 Kh2 
                            Kh5 Kg2 Kg5 Qe1 Kf5 Kf2 b4 Qc1 Kf6 Qe3 Qc2+ Kf3 bxc3 
41   +2.12 4:53:33 162625M  Rxf6 O-O-O Rf7 Rd5 Qe3 Bc5 Qg3 Rd7 Qxg7 Rxf7 Qxf7 
                            Rf8 Qxh7 Kb8 Qd3 Qd5 Qxd5 exd5 Bxb5 Rf2 Rb1 Bd6 a3 
                            Kc7 a4 Rd2 h4 Bf4 h5 Kd6 g4 Ke6 Be8 d4 Re1+ Kf6 cxd4 
                            Rxd4 Bg6 Kg5 Bf5
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laoliveirajr
Posts: 138
Joined: Tue Sep 25, 2012 11:39 pm
Location: Brasilia DF Brazil

Re: Test Position: Rook Sac from WCRCC 2013

Post by laoliveirajr »

zullil wrote:[D]r3kb1r/1p4pp/2q1pp2/1p2Q3/8/2P5/PP2B1PP/R4R1K w kq - 0 25

Against ArasanX, NightmareX played Rxf6. What do other engines "think?"
The Capivara LK 0.09a02a found the same movement, since the depth 7-9, except 10, and the since depth 11 .......

Surprised? See also the move of depth 1!

Code: Select all

FEN: r3kb1r/1p4pp/2q1pp2/1p2Q3/8/2P5/PP2B1PP/R4R1K w kq - 0 25 

Capivara LK 0.09a02a 64-bit:
   1	00:00	           4	0	+0,43	Rf1xf6
   2	00:00	         303	0	-0,14	Qe5xb5 Qc6xb5 Be2xb5+
   3	00:00	         730	0	+0,11	Qe5xb5 Bf8-c5 Qb5xc6+ b7xc6
   3	00:00	       1.156	0	+0,11	Qe5xb5 Bf8-c5 Qb5xc6+ b7xc6
   4	00:00	       1.702	0	-0,02	Qe5xb5 Qc6xb5 Be2xb5+ Ke8-f7 Rf1-d1
   4	00:00	       2.295	0	+0,10	Qe5-h5+ g7-g6 Qh5xb5 Bf8-e7 Qb5xc6+ b7xc6
   4	00:00	       2.806	0	-0,02	Qe5xb5 Qc6xb5 Be2xb5+ Ke8-f7 Rf1-d1
   4	00:00	       2.934	0	+0,10	Qe5-h5+ g7-g6 Qh5xb5 Bf8-e7 Qb5xc6+ b7xc6
   5	00:00	       3.795	0	 0,00	Qe5-h5+ g7-g6 Qh5xb5 Qc6xb5 Be2xb5+ Ke8-f7 Rf1-d1
   6	00:00	       6.501	0	-0,11	Qe5-h5+ g7-g6 Qh5xb5 Qc6xb5 Be2xb5+ Ke8-f7 Rf1-d1 Bf8-e7
   6	00:00	       7.411	0	-0,02	Qe5xb5 Qc6xb5 Be2xb5+ Ke8-f7 Rf1-d1 Bf8-e7 Rd1-d7
   6	00:00	      12.730	795.625	-0,02	Qe5xb5 Qc6xb5 Be2xb5+ Ke8-f7 Rf1-d1 Bf8-e7 Rd1-d7
   7	00:00	      15.294	955.875	+0,04	Qe5xb5 Qc6xb5 Be2xb5+ Ke8-f7 Rf1-d1 Bf8-e7 Rd1-d7 b7-b6
   7	00:00	      25.012	1.563.250	+0,57	Rf1xf6 g7xf6 Qe5xf6 Rh8-g8 Be2xb5 Qc6xb5 Qf6xe6+ Ke8-d8 Qe6xg8
   8	00:00	      26.759	1.672.437	+0,57	Rf1xf6 g7xf6 Qe5xf6 Rh8-g8 Be2xb5 Qc6xb5 Qf6xe6+ Ke8-d8 Qe6xg8
   9	00:00	      70.371	1.117.000	-0,02	Rf1xf6 g7xf6 Qe5xf6 Rh8-g8 Be2-h5+ Rg8-g6 Bh5xg6+ h7xg6 Qf6xg6+ Ke8-e7 Qg6-g5+ Ke7-e8 h2-h4
   9	00:00	      90.209	1.141.886	 0,00	Qe5-h5+ g7-g6 Qh5xb5 Qc6xb5 Be2xb5+ Ke8-f7 Rf1-d1 Bf8-e7 Rd1-d7 Ra8-b8 Ra1-e1
  10	00:00	     125.855	1.144.136	+0,03	Qe5-h5+ g7-g6 Qh5xb5 Qc6xb5 Be2xb5+ Ke8-f7 Rf1-d1 Bf8-e7 Rd1-d7 b7-b6 Kh1-g1 h7-h6
  11	00:00	     217.510	1.156.968	-0,06	Qe5-h5+ g7-g6 Qh5xb5 Qc6xb5 Be2xb5+ Ke8-f7 Rf1-d1 Ra8-b8 Bb5-c4 b7-b5 Rd1-d7+ Bf8-e7 Bc4-d3 h7-h6
  11	00:00	     453.255	1.034.828	+0,54	Rf1xf6 g7xf6 Qe5xf6 Rh8-g8 Be2xb5 Qc6xb5 Qf6xe6+ Ke8-d8 Qe6xg8 Qb5-f5 Ra1-d1+ Kd8-c8 Rd1-c1
  12	00:00	     520.641	1.110.108	+0,61	Rf1xf6 g7xf6 Qe5xf6 Rh8-g8 Be2xb5 Qc6xb5 Qf6xe6+ Ke8-d8 Qe6xg8 Qb5-f5 b2-b4 Ra8-c8 Ra1-c1
  13	00:00	     693.460	1.167.441	+0,59	Rf1xf6 g7xf6 Qe5xf6 Rh8-g8 Be2xb5 Qc6xb5 Qf6xe6+ Ke8-d8 Qe6xg8 Qb5-f5 b2-b4 Ra8-c8 Ra1-d1+ Kd8-e8 c3-c4
  14	00:00	     992.853	1.221.221	+0,65	Rf1xf6 g7xf6 Qe5xf6 Rh8-g8 Be2xb5 Qc6xb5 Qf6xe6+ Ke8-d8 Qe6xg8 Kd8-c7 Qg8xh7+ Kc7-b8 Qh7-f7 Bf8-d6 Qf7-g8+ Kb8-a7 Qg8-b3 Qb5xb3 a2xb3+
  15	00:01	   1.494.640	1.210.234	+0,59	Rf1xf6 g7xf6 Qe5xf6 Rh8-g8 Be2xb5 Qc6xb5 Qf6xe6+ Ke8-d8 Qe6xg8 Qb5-f5 b2-b4 b7-b6 a2-a4 Ra8-c8 Ra1-d1+ Kd8-e8 c3-c4
  16	00:02	   2.821.235	1.100.754	+0,57	Rf1xf6 g7xf6 Qe5xf6 Rh8-g8 Be2xb5 Qc6xb5 Qf6xe6+ Ke8-d8 Qe6xg8 Qb5-f5 Ra1-d1+ Kd8-c7 Qg8-c4+ Qf5-c5 Qc4-f7+ Qc5-e7 Qf7-f4+ Kc7-c8 a2-a3 h7-h6 Kh1-g1
  17	00:13	  13.585.657	984.681	+1,35	Rf1xf6 g7xf6 Qe5xf6 Rh8-g8 Be2-h5+ Ke8-d7 Qf6-f7+ Bf8-e7 Ra1-d1+ Kd7-c7 Qf7xe7+ Kc7-b8 Bh5-f3 Qc6-b6 Qe7xh7 Rg8-c8 Rd1-d7 Ra8-a7 Qh7-g7 Kb8-a8 a2-a3
  18	00:24	  23.562.894	962.339	+1,15	Rf1xf6 g7xf6 Qe5xf6 Rh8-g8 Be2-h5+ Rg8-g6 Bh5xg6+ h7xg6 Ra1-f1 Ke8-d7 Qf6-f7+ Kd7-d6 Rf1-d1+ Kd6-e5 Qf7xg6 Qc6-e4 Qg6-g3+ Qe4-f4 Rd1-e1+ Ke5-f5 Qg3-d3+ Kf5-g5 Qd3xb5+ Kg5-g4 h2-h3+ Kg4-h4 Qb5-b3
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Joost Buijs
Posts: 1563
Joined: Thu Jul 16, 2009 10:47 am
Location: Almere, The Netherlands

Re: Test Position: Rook Sac from WCRCC 2013

Post by Joost Buijs »

This is the output from Nightmare, although on a somewhat slower box.
It is switching between Rxf6 and Bh5+. On the last iteration it is already hitting the table-bases.
When the game continued the score was slowly decreasing towards zero.
Nightmare could not find a win, according to John it missed a win later in the game.

When I have some time to spare I will try to find out where and why it missed a win.

Code: Select all

info string Nightmare MP v7.8.0 by Joost Buijs
info string logical processors found  6
info string starting threads  0  1  2  3  4  5
info string init tablebases...
info string path F:\TB6P, 64 Mb. cache, max. 6 piece TB found!
position arasan
go infinite
info depth 1 score cp 152 time 0 nodes 743 nps 743 tbhits 0 pv e2h5 e8d7 a1d1
info depth 2 score cp 152 time 2 nodes 1047 nps 523500 tbhits 0 pv e2h5 e8d7 a1d1 d7c8
info depth 3 score cp 139 time 3 nodes 1985 nps 661666 tbhits 0 pv e2h5 e8d7 f1d1 d7c8 e5d4
info depth 4 score cp 70 time 6 nodes 4534 nps 755666 tbhits 0 pv e2h5 e8d7 e5f4 d7c8 h5f3
info depth 5 score cp 55 time 10 nodes 9745 nps 974500 tbhits 0 pv e2h5 e8d7 e5f4 d7c8 a1d1 e6e5
info depth 6 score cp 115 time 19 nodes 30168 nps 1587789 tbhits 0 pv e2h5 e8d7 f1d1 d7c8 e5g3 e6e5 h5f3 c6c4
info depth 7 score cp 101 time 27 nodes 43373 nps 1606407 tbhits 0 pv e2h5 e8d7 f1d1 d7c8 e5g3 e6e5 h5f3 c6e6 f3d5
info depth 8 score cp 98 time 49 nodes 105352 nps 2150040 tbhits 0 pv e2h5 e8d7 f1d1 d7c8 e5g3 e6e5 h5f3 c6e6 f3d5 e6d7

info depth 9 score cp 87 time 84 nodes 217202 nps 2585738 tbhits 0 pv e2h5 e8d7 f1d1 d7c8 e5g3 c6c7 g3g4 f8c5 g4e6 c8b8
h5f3
info depth 10 score cp 72 time 147 nodes 500861 nps 3407217 tbhits 0 pv e2h5 e8d7 f1d1 d7c8 e5g3 c6c7 g3e3 c7e5 e3e5 f6e
5 h5e2 e5e4
info depth 11 score cp 127 time 257 nodes 1134230 nps 4413346 tbhits 0 pv e2h5 e8d7 a1d1 f8d6 e5g3 d7c7 g3g7 c6d7 g7f6 h
8f8 h5f7 a8a2 f6g7
info depth 12 score cp 125 time 345 nodes 1719440 nps 4983884 tbhits 0 pv e2h5 e8d7 a1d1 d7c8 f1f6 g7f6 e5f6 c6c7 f6h8 c
7g7 h8g7 f8g7 h5g4 a8a6
info depth 13 score cp 125 time 444 nodes 2392772 nps 5389126 tbhits 0 pv e2h5 e8d7 a1d1 d7c8 f1f6 g7f6 e5f6 c6c7 f6h8 c
7g7 h8g7 f8g7 h5g4 a8a6 h1g1
info depth 14 score cp 110 time 904 nodes 6278874 nps 6945657 tbhits 0 pv f1f6 g7f6
info depth 15 score cp 122 time 1308 nodes 9739402 nps 7446025 tbhits 0 pv f1f6 g7f6 e5f6 h8g8 e2h5 e8d7 f6f7 f8e7 a1d1
d7c7 f7e7 c7b8 h5f3 c6c7 e7e6 g8d8 d1d8
info depth 16 score cp 122 time 2465 nodes 19391207 nps 7866615 tbhits 0 pv f1f6 g7f6 e5f6 h8g8 e2h5 e8d7 f6f7 f8e7 a1d1
 d7c7 f7e7 c7b8 h5f3 c6c7 e7e6 g8d8 d1d8 c7d8
info depth 17 score cp 142 time 4267 nodes 36316465 nps 8511006 tbhits 0 pv f1f6 g7f6 e5f6 h8g8 e2h5 g8g6 h5g6 h7g6 a1f1
 e8d7 f6f7 d7d6 f1d1 d6e5 d1d4 g6g5 h2h4 a8a4 f7f8
info depth 18 score cp 142 time 7168 nodes 63199316 nps 8816868 tbhits 0 pv f1f6 g7f6 e5f6 h8g8 e2h5 g8g6 h5g6 h7g6 a1f1
 e8d7 f6f7 d7d6 f1d1 d6e5 d1d4 g6g5 h2h4 a8a4 f7f8 a4d4
info depth 19 score cp 142 time 17641 nodes 148400578 nps 8412254 tbhits 0 pv f1f6 g7f6 e5f6 h8g8 e2h5 g8g6 h5g6 h7g6 a1
f1 e8d7 f6f7 d7d6 f1d1 d6e5 d1d4 g6g5 h2h4 a8a4 f7f8 a4d4 f8g7
info depth 20 score cp 127 time 59784 nodes 551640636 nps 9227228 tbhits 0 pv e2h5 e8e7
info depth 21 score cp 137 time 134256 nodes 1300361360 nps 9685685 tbhits 12 pv f1f6 g7f6 e5f6 h8g8 e2h5 g8g6 h5g6 h7g6
 a1f1 e8d7 f6f7 d7d6 f1d1 d6e5 h2h3 b5b4 d1e1 e5d5 c3b4 f8b4 f7f3 d5d6 f3f4
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Ajedrecista
Posts: 1966
Joined: Wed Jul 13, 2011 9:04 pm
Location: Madrid, Spain.

Re: Test Position: Rook Sac from WCRCC 2013.

Post by Ajedrecista »

Hello Louis:

Hannibal did not fail in this position. Analysis by Hannibal 1.3 w32 (using two cores) in an Intel Pentium D930 (3 GHz), with 1 GB of hash, running under Arena 2.0.1 GUI:

[d]r3kb1r/1p4pp/2q1pp2/1p2Q3/8/2P5/PP2B1PP/R4R1K w kq - 0 25
FEN: r3kb1r/1p4pp/2q1pp2/1p2Q3/8/2P5/PP2B1PP/R4R1K w kq - 0 25

Hannibal1.3x32:
8 00:01 90.296 444.807 +0,31 Qe5h5+ g7g6 Qh5xb5 Qc6xb5 Be2xb5+ Ke8f7 Rf1d1 Bf8e7 Rd1d7 b7b6 Bb5c6 Ra8d8 Ra1d1 Rd8xd7
9 00:01 230.216 446.155 +0,99 Be2h5+ Ke8e7 Qe5d4 Ra8d8 Qd4e3 Qc6d5 Qe3h3 Qd5d3 Rf1f3 Qd3e4
10 00:01 298.681 444.465 +0,96 Be2h5+ Ke8d7 Rf1d1+ Kd7c8 Qe5e2 Qc6c4 Qe2d2 Kc8b8 Bh5e2 Qc4c7 Be2xb5 Bf8c5 Qd2e2 Qc7b6 Rd1d7
11- 00:02 361.893 454.069 +0,80 Be2h5+ Ke8d7 Rf1d1+ Kd7c8 Qe5e2 Qc6c4 Qe2d2 Kc8b8 Bh5e2 Qc4c7 Be2xb5 Bf8c5 Qd2e2 Qc7b6 Rd1d7
11 00:02 473.526 473.526 +0,89 Be2h5+ Ke8d7 Ra1d1+ Bf8d6 Qe5d4 Kd7c7 Bh5f3 e6e5 Qd4g4 Qc6d7 Qg4e4 Kc7b6 b2b4 Rh8b8
12 00:04 1.820.787 527.305 +1,10 Be2h5+ Ke8d7 Ra1d1+ Bf8d6 Qe5g3 Rh8g8 Qg3e3 Ra8xa2 Bh5f3 Qc6a6 Rf1e1 Rg8e8
13 00:08 3.998.720 566.150 +1,26 Be2h5+ Ke8d7 Ra1d1+ Bf8d6 Qe5g3 Kd7c7 Qg3xg7+ Qc6d7 Qg7xd7+ Kc7xd7 Rf1xf6 Rh8f8 Rf6h6 Ra8xa2 Rh6xh7+ Kd7c8 Bh5f3 Bd6c7 b2b4 Bc7e5 Bf3xb7+ Kc8b8 Bb7e4 Be5xc3 Rh7b7+ Kb8c8 Rb7xb5
14- 00:11 6.269.441 587.466 +1,10 Be2h5+ Ke8e7 Ra1d1 Ra8d8 Qe5e3 Rd8xd1 Rf1xd1 Qc6c7 Qe3d4 g7g6 Bh5g4 Ke7f7 Bg4xe6+ Kf7g7 Qd4d7+ Qc7xd7 Rd1xd7+ Kg7h6 Rd7xb7
14 00:15 8.619.702 588.094 +0,89 Be2h5+ Ke8e7 Qe5f4 Ke7d7 Bh5f3 Qc6b6 Rf1d1+ Kd7c8 Qf4e4 Ra8a6 a2a3 Qb6c7 Rd1d3 Ra6d6 Rd3xd6 Qc7xd6
15 00:20 11.240.876 589.206 +0,79 Be2h5+ Ke8e7 Qe5e3 Ke7d8 Bh5f3 Bf8c5 Ra1d1+ Kd8c8 Qe3d3 Qc6c7 Qd3xb5 Ra8a5 Qb5c4 Ra5a6 b2b4 Bc5e7
16 00:36 20.908.084 588.694 +0,82 Be2h5+ Ke8e7 Qe5e3 Ra8d8 Ra1e1 e6e5 Bh5f3 Qc6c7 Bf3e2 Ke7d7 Re1d1+ Kd7c8 Qe3a7 Rd8xd1 Rf1xd1 Bf8d6 Be2g4+ Kc8d8 Qa7a8+
17- 01:00 35.390.838 599.682 +0,66 Be2h5+ Ke8e7 Qe5e3 Ra8d8 Ra1e1 Rd8d6 Bh5g4 e6e5 Qe3f2 Ke7e8 Qf2f5 Rd6d2 Qf5c8+ Qc6xc8
17 01:19 46.604.604 598.815 +0,68 Be2h5+ Ke8e7 Qe5e3 Ra8d8 Ra1d1 Rd8xd1 Rf1xd1 g7g6 Bh5f3 Qc6c7 Qe3d3 Ke7f7 Qd3xb5 Bf8d6 Qb5xb7 Qc7xb7 Bf3xb7 Rh8d8 b2b4 Bd6e7 Rd1xd8 Be7xd8 a2a4 Kf7e7 a4a5 Ke7d6
18 01:35 56.815.880 602.821 +0,68 Be2h5+ Ke8e7 Qe5e3 Ra8d8 Bh5f3 Qc6a6 Ra1d1 Rd8xd1 Rf1xd1 b5b4 c3xb4 Qa6xa2 Bf3d5 Qa2a6 Rd1e1 e6e5 Re1d1 Ke7e8 Qe3f3 b7b5 Bd5c6+ Ke8f7 Qf3d5+ Kf7g6 Bc6xb5
19 02:13 80.766.940 609.561 +0,93 Be2h5+ Ke8e7 Ra1d1 Ra8d8 Qe5f4 Rd8xd1 Rf1xd1 g7g6 Bh5f3 Qc6b6 Bf3e2 Ke7f7 Qf4b8 Kf7g8 Qb8e8 Kg8g7 Qe8d7+ Kg7h6 Be2xb5 f6f5 Rd1d3 e6e5 Rd3h3+ Kh6g5 Bb5c4 h7h5 Rh3g3+ Kg5h6
20 02:20 85.358.274 611.199 +0,88 Be2h5+ Ke8e7 Ra1d1 Ra8d8 Qe5f4 Rd8xd1 Rf1xd1 g7g6 Bh5f3 Qc6b6 Bf3e2 Ke7f7 Qf4b8 Kf7g8 Qb8e8 Kg8g7 Qe8d7+ Kg7h6 Be2xb5 f6f5 Rd1d3 e6e5 Rd3h3+ Kh6g5 Bb5c4 h7h5 Rh3g3+ Kg5h6
21 02:46 102.153.910 619.993 +0,88 Be2h5+ Ke8e7 Ra1d1 Ra8d8 Qe5f4 Rd8xd1 Rf1xd1 g7g6 Bh5f3 Qc6b6 Bf3e2 Ke7f7 Qf4b8 Kf7g8 Qb8e8 Kg8g7 Qe8d7+ Kg7h6 Be2xb5 f6f5 Rd1d3 e6e5 Rd3h3+ Kh6g5 Bb5c4 h7h5 Rh3g3+ Kg5h6
22- 03:34 135.714.733 635.898 +0,72 Be2h5+ Ke8e7 Ra1d1 Ra8d8 Qe5f4 Rd8xd1 Rf1xd1 g7g6 Bh5f3 Qc6b6 Bf3e2 Ke7f7 Qf4b8 f6f5 Rd1d7+ Kf7f6 Rd7xb7 Qb6d6 Qb8a7 Qd6e5 h2h4 g6g5 h4h5 Qe5xe2 Rb7f7+
22 07:05 296.353.697 699.153 +0,70 Rf1xf6 g7xf6 Qe5xf6 Rh8g8 Be2h5+ Rg8g6 Bh5xg6+ h7xg6 Ra1f1 Ke8d7 Qf6f7+ Kd7d6 Rf1d1+ Kd6e5 Qf7xg6 Qc6e4 Qg6g3+ Qe4f4 Rd1e1+ Ke5f5 Qg3d3+ Kf5g5 Qd3xb5+ e6e5 Re1f1 Qf4e4 Qb5d7 Bf8h6 Qd7e7+ Kg5h5 Qe7f7+ Kh5h4 Qf7e6 Kh4h5 Rf1f5+ Bh6g5 Rf5xe5 Ra8f8 Qe6h3+ Kh5g6 Re5e6+ Kg6g7 Qh3h8+ Kg7xh8 Re6xe4 Rf8f1+
23 10:30 475.864.521 755.808 +0,88 Rf1xf6 g7xf6 Qe5xf6 Rh8g8 Be2h5+ Rg8g6 Bh5xg6+ h7xg6 Ra1f1 Ke8d7 Qf6f7+ Kd7d6 Rf1d1+ Kd6e5 h2h3 Ra8c8 Qf7g8 Qc6e4 Qg8h8+ Ke5f5 Rd1f1+ Kf5g5 Rf1xf8 Qe4b1+ Kh1h2 Rc8xf8 Qh8xf8 Qb1xb2 Qf8d8+ Kg5f5 h3h4 Qb2c1 Qd8d3+ Kf5f6 Qd3xb5 Qc1f4+ g2g3 Qf4e4 Qb5f1+ Kf6e5 Qf1g2 Qe4xg2+ Kh2xg2 Ke5e4 c3c4 e6e5 g3g4 b7b6 h4h5 g6xh5 g4xh5
24 14:21 668.166.966 776.570 +0,98 Rf1xf6 g7xf6 Qe5xf6 Rh8g8 Be2h5+ Rg8g6 Bh5xg6+ h7xg6 Ra1f1 Ke8d7 Qf6f7+ Kd7d6 Rf1d1+ Kd6e5 h2h3 Ra8c8 Qf7g8 Qc6e4 Qg8h8+ Ke5f5 Rd1f1+ Kf5g5 Rf1xf8 Qe4b1+ Kh1h2 Rc8xf8 Qh8xf8 Qb1xb2 h3h4+ Kg5xh4 Qf8h6+ Kh4g4 Qh6xg6+ Kg4f4 Qg6f6+ Kf4e3 Qf6xe6+ Ke3f2 Qe6f7+ Kf2e1 Qf7xb7 Qb2xc3 Qb7xb5 Qc3h8+ Kh2g3 Qh8g8+ Kg3h3 Qg8h8+ Kh3g4 Qh8d4+ Kg4g5 Qd4g7+ Kg5h4 Qg7xg2 Qb5e5+ Ke1f2 a2a4 Qg2h1+ Kh4g5 Qh1g2+ Kg5f5 Qg2h3+ Kf5e4
25 23:33 1.111.435.461 787.013 +0,93 Rf1xf6 g7xf6 Qe5xf6 Rh8g8 Be2h5+ Ke8d7 Ra1d1+ Kd7c7 Qf6f7+ Bf8e7 Qf7xe7+ Kc7b6 Bh5f3 Rg8e8 Qe7h4 Qc6c5 a2a3 Ra8a4 Qh4xh7 Re8e7 Qh7h8 Qc5c7 Qh8g8 Ra4f4 b2b4 e6e5 Qg8a8
I stopped the analysis after 25 minutes.

Regards from Spain.

Ajedrecista.
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User avatar
sje
Posts: 4675
Joined: Mon Mar 13, 2006 7:43 pm

Symbolic says

Post by sje »

Symbolic says:

Code: Select all

[+0.465/16/1:30:40.289/3,897,272,761/0] 25 Bh5+ Ke7 26 Rad1 Rd8 27 Qe3 e5 28 Bf3 Qc7 29 Be4 Rxd1 30 Rxd1 g6 31 Qf3 Qa5 32 a3
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