Position in Rybka vs. Diep

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Pressie

Position in Rybka vs. Diep

Post by Pressie »

How long does it take your program to find Rxf3?

In the game Rybka vs. Diep the following position was reached:

[d] 1r4k1/5pp1/7p/3p4/Qpp1q3/5N1P/PP3rP1/1R1R3K b

Does anyone know how long it took Rybka with cluster to find Rxf3?
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AdminX
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Re: Position in Rybka vs. Diep

Post by AdminX »

Intel Core 2 Quad Q6700 @ 2.66 Ghz
Windows Vista Ultimate 64-bit
8 GB Ram, 2048 Hash
3, 4, 5, and 6 Men Tablebases


Analysis by Deep Rybka 3 64-bit:

1...Qg6 2.Rg1 Rxg2 3.Qa7 Rxg1+ 4.Rxg1 Qb6 5.Qxb6 Rxb6 6.Nd4 g5 7.Kg2 Kg7 8.Kf3 Kg6 9.Re1 Ra6 10.Nc2 Rxa2 11.Nxb4 Rxb2 12.Nxd5 Rb3+ 13.Ne3 f5 14.Kg2 c3 15.Rc1 c2 16.Nd5 Rd3
=/+ (-0.53) Depth: 6 00:00:00 7kN
=/+ (-0.39) Depth: 18 00:02:59 31493kN

1...Rxf3 2.gxf3[] Qxf3+[]
=/+ (-0.61 !) Depth: 18 00:04:08 44948kN
=/+ (-0.65) Depth: 18 00:05:06 57439kN
"Good decisions come from experience, and experience comes from bad decisions."
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Eelco de Groot
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Full name:   Eelco de Groot

Re: Position in Rybka vs. Diep

Post by Eelco de Groot »

Blueberry, old build 375, goes back and forth between 1...Qg6 and 1...Rxf3. I think this Blueberry would have found it on a cluster :roll: :

[d]1r4k1/5pp1/7p/3p4/Qpp1q3/5N1P/PP3rP1/1R1R3K b - -

Engine: Blueberry Beta 4 DM70 Build 375 (Athlon 2009 MHz, 256 MB)
by F. Letouzey, T. Gaksch, E. de Groot

1/12 0:00 +0.18 1...Rxf3 2.gxf3 Qxf3+ 3.Kh2 Qf2+
4.Kh1 (493)

1/12 0:00 +0.20 1...Re2 (610)

2/27 0:00 -0.67 1...Re2 2.Re1 b3 3.axb3 Rxb3 4.Qa8+ Kh7
5.Rxe2 Qxb1+ 6.Re1 (64.208)

2/37 0:02 +0.18 1...Rxf3 2.gxf3 Qxf3+ 3.Kh2 Qf4+
4.Kh1 Qe4+ 5.Kg1 Qe3+ 6.Kh2 b3 7.Re1 bxa2
8.Qxa2 (1.292.573) 520

2/40 0:05 +0.33 1...Rxf3 2.gxf3 Qxf3+ 3.Kh2 Qf2+
4.Kh1 Qf5 5.Kh2 d4 6.Re1 b3 7.axb3 Rxb3
8.Qa8+ Kh7 (2.800.770) 520

2/50 0:15 +0.33 1...Rxf3 2.gxf3 Qxf3+ 3.Kh2 Qf4+
4.Kg2 Qe4+ 5.Kg1 Qg6+ 6.Kh2 Qf6 (8.977.148) 584

3/50 0:17 +0.20 1...Rxf3 2.gxf3 Qxf3+ 3.Kh2 b3 4.Rg1 bxa2
5.Qxa2 Qe2+ 6.Kh1 (10.019.887) 576

4/50 0:23 +0.20 1...Rxf3 2.gxf3 Qxf3+ 3.Kh2 b3 4.Rg1 bxa2
5.Qxa2 Qe2+ 6.Kh1 (13.835.388) 586

4/50 0:25 +0.61 1...Qg6 2.Rg1 Rxg2 3.Qa7 Rc8 4.Rxg2 Qxb1+
5.Kh2 Qe4 6.Nd4 (15.058.992) 589

4/50 0:25 +0.61 1...Qg6 2.Rg1 Rxg2 3.Qa7 Rc8 4.Rxg2 Qd3
5.Kh2 Qxf3 6.Qd7 Qf4+ 7.Kg1 Qe3+
8.Kf1 (15.060.708) 589

4/50 0:25 +0.68 1...Qg6 2.Rg1 Rxg2 3.Qa7 Rc8 4.Nd4 Rxg1+
5.Rxg1 Qe4+ 6.Kh2 c3 7.Qd7 Qf4+
8.Kh1 (15.191.007) 589

5/50 0:29 +0.65 1...Qg6 2.Rg1 Rxg2 3.Qa7 Rc8 4.Rxg2 Qxb1+
5.Kh2 (17.621.759) 592

6/50 1:16 +0.65 1...Qg6 2.Rg1 Rxg2 3.Qa7 Rc8 4.Rxg2 Qxb1+
5.Kh2 (44.517.159) 581

6/55 2:47 +0.85 1...Rxf3 2.gxf3 Qxf3+ 3.Kh2 Qf2+
4.Kh1 b3 5.a3 Qf3+ 6.Kh2 Qe2+ 7.Kg1 Qe3+
8.Kg2 Rb6 9.Qa8+ Kh7 10.Kh2 Rg6
11.Rg1 Rxg1 12.Rxg1 Qe5+ 13.Kh1 Qxb2
14.Qxd5 (87.383.537) 521

7/55 3:20 +0.78 1...Rxf3 2.gxf3 Qxf3+ 3.Kh2 Qf2+
4.Kh1 b3 5.a3 Qf5 6.Kh2 c3 7.Qd4 Qc2+
8.Kh1 cxb2 9.Qxd5 (107.612.625) 537

7/55 3:46 +1.01 1...Qg6 2.Rg1 Rxg2 3.Rxg2 Qxb1+
4.Ng1 Qe4 5.Qc6 Rf8 6.Kh2 h5 7.Kh1 Rb8
8.Qd6 Ra8 (121.975.689) 539

8/55 4:50 +0.67 1...Qg6 2.Rg1 Rxg2 3.Qa7 Rc8 4.Rxg2 Qxb1+
5.Kh2 Qe4 6.Qd7 (163.665.401) 563

8/55 7:42 +0.85 1...Rxf3 2.gxf3 Qxf3+ 3.Kh2 Qf2+
4.Kh1 b3 5.a3 Qf3+ 6.Kh2 Qf4+ 7.Kg2 Qe4+
8.Kh2 Re8 9.Rd2 Qf4+ 10.Kh1 Qf3+
11.Kh2 Re2+ 12.Rxe2 Qxe2+ 13.Kg1 Qe3+
14.Kf1 Qxh3+ (238.665.141) 516

8/55 10:43 +0.88 1...Rxf3 2.gxf3 Qxf3+ 3.Kh2 Qf2+
4.Kh1 b3 5.a3 Qf3+ 6.Kh2 Qf4+ 7.Kg2 Qe4+
8.Kh2 Re8 9.Re1 Qf4+ 10.Kg2 Re5
11.Rxe5 Qxe5 12.Kg1 Qg3+ 13.Kf1 Qxh3+
14.Ke1 Qe3+ (326.491.961) 507

8/59 13:35 +1.15 1...Rxf3 2.gxf3 Qxf3+ 3.Kh2 Qf2+
4.Kh1 b3 5.a3 Qf3+ 6.Kh2 Qf4+ 7.Kh1 Qe4+
8.Kh2 Re8 9.Re1 Qc2+ 10.Kg3 Rxe1
11.Qa8+ Kh7 12.Rxe1 Qxb2 13.Qxd5 Qc2
14.Qxf7 c3 (428.686.956) 525

9/59 15:03 +0.85 1...Rxf3 2.gxf3 Qxf3+ 3.Kh2 Qf2+
4.Kh1 b3 5.a3 Qf3+ 6.Kh2 Qe2+ 7.Kg1 Qe3+
8.Kg2 Qe4+ 9.Kh2 Qc2+ 10.Kg1 Rc8 (481.747.020) 533



Unfortunately now:


9/59 16:21 +1.15 1...Qg6 2.Rg1 Rxg2 3.Qa7 Re8 4.Rxg2 Qxb1+
5.Kh2 Qf5 6.Qd4 g5 7.Qf2 Qf4+ 8.Kg1 Ra8
9.Nxg5 Qc1+ 10.Qf1 Qxf1+ 11.Kxf1 hxg5
12.Rxg5+ Kf8 (526.481.322) 536

9/59 17:26 +1.15 1...Qg6 2.Rg1 Rxg2 3.Qa7 Re8 4.Rxg2 Qxb1+
5.Kh2 c3 6.Qd7 Re4 7.bxc3 bxc3
8.Qxd5 Ra4 9.Kg3 h5 10.Kh2 c2 11.Ne5 Qxa2
12.Qd8+ Kh7 (561.495.552) 536

9/59 18:09 +1.15 1...Qg6 2.Rg1 Rxg2 3.Qa7 Re8 4.Rxg2 Qxb1+
5.Kh2 c3 6.Qd7 Qe4 7.bxc3 Kf8 8.Kg3 Re6
9.cxb4 Rb6 10.Kh2 Qxf3 11.Kh1 d4
12.Qc8+ Ke7 13.Qc5+ Rd6 14.Qc7+ Ke6 (584.608.872) 536

10/59 23:35 +1.01 1...Qg6 2.Rg1 Rxg2 3.Rxg2 Qxb1+
4.Ng1 Qe4 5.Qc6 Rf8 6.Kh2 h5 7.Kh1 Qf5
8.Qd6 (780.056.968) 551



Eelco
Debugging is twice as hard as writing the code in the first
place. Therefore, if you write the code as cleverly as possible, you
are, by definition, not smart enough to debug it.
-- Brian W. Kernighan
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kgburcham
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Re: Position in Rybka vs. Diep

Post by kgburcham »

[d] 1r4k1/5pp1/7p/3p4/Qpp1q3/5N1P/PP3rP1/1R1R3K b - -

Rybka 3
Default settings

17.01 1:40 -0.56 1...Qg6 2.Rg1 Rxg2 3.Qa7 Rc8 4.Rxg2 Qxb1+ 5.Kh2 Qe4 6.Qd4 Qxd4 7.Nxd4 c3 8.Rc2 Rc4 9.Nf3 f6 10.Kg3 d4 11.Ne1 g5 12.Nd3 f5 13.b3 Rc7 14.Nxb4 Kf7 (18.739.397) 191
17.03 2:15 -0.82++ 1...Rxf3 (25.932.227) 195
17.01 4:08 -1.02++ 1...Rxf3 (50.126.090) 206
17.01 4:55 -0.57 1...Rxf3 2.gxf3 Qxf3+ (60.522.396) 209


2nd try
17.03 2:37 -0.82++ 1...Rxf3 (31.658.909) 205
17.01 2:56 -1.02++ 1...Rxf3 (36.590.216) 212
Last edited by kgburcham on Sun Mar 22, 2009 4:53 pm, edited 1 time in total.
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Pressie

Re: Position in Rybka vs. Diep

Post by Pressie »

The game went:

1. d4 d5 2. Nf3 Nf6 3. Bf4 c5 4. e3 e6 5. Nbd2 Nc6 6. c3 Bd6 7. Bxd6 Qxd6 8. Bd3 O-O 9. O-O e5 10. dxe5 Nxe5 11. Nxe5 Qxe5 12. Nf3 Qe7 13. Nd2 Bg4 14. Qa4 c4 15. Bb1 a5 16. Re1 b5 17. Qc2 Rfe8 18. Nf1 b4 19. Qd2 Rab8 20. Bc2 Qe5 21. h3 Bf5 22. Bxf5 Qxf5 23. Ng3 Qe5 24. Rab1 Rb5 25. Qc2 h6 26. Red1 Reb8 27. Ne2 Ne4 28. Nd4 R5b6 29. cxb4 axb4 30. Nf3 Qh5 31. Nd4 Rf6 32. f3 Qg5 33. fxe4 Qxe3+ 34. Kh1 Rf2 35. Qa4 Qxe4 36. Nf3 Rxf3 37. gxf3 Qxf3+ 38. Kh2 Qf4+ 39. Kg2 Rb6 40. Qe8+ Kh7 41. Rf1 Rg6+ 42. Kh1 Qg3 43. Qe2 Qxh3+ 44. Qh2 Qd3 45. Rbe1 d4 46. Qh5 Rg5 47. Qf3 Qg6 48. Re2 c3 49. bxc3 bxc3 50. Rg2 Rxg2 51. Qxg2 d3 52. Qd5 d2 53. Rg1 Qf6 54. Qd3+ Kg8 55. a4 h5 56. a5 Qc6+ 57. Kh2 Qc7+ 58. Kg2 Qxa5 59. Rf1 Qe5 60. Kf2 g5 61. Qd8+ Kg7 62. Qd7 Qh2+ 63. Ke3 Qg3+ 64. Kd4 Qf2+ 65. Kxc3 Qxf1 66. Qxd2 Qf4 67. Qe1 h4 68. Kc2 Qf5+ 69. Kb2 h3 70. Qg3 g4 71. Qg1 Qe5+ 72. Kb3 g3 73. Ka3 h2 74. Qh1 f5 75. Qb7+ Kg6 76. Qc6+ Kf7 77. Qf3 Qa1+ 78. Kb3 Qb1+ 79. Kc3 h1=Q 80. Qd5+ Kg6 81. Qg8+ Kh5 82. Qh7+ Kg4 83. Qg6+ Kf3 84. Qc6+ Qe4 85. Qxe4+ Kxe4 86. Kc4 g2 87. Kb5 g1=Q 88. Ka6 Qc5 89. Kb7 Qh7+ 90. Ka8 Qf8# {White checkmated} 0-1


The more I look at it, I am not so certain that Rf3 wins, as Diep clearly blundered on 39. Kg2. Should have played Kh1 setting up the following position.

[d] 1r4k1/5pp1/7p/3p4/Qpp2q2/7P/PP6/1R1R3K b
Could Diep have survived with 39. Kh1?
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Dirt
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Re: Position in Rybka vs. Diep

Post by Dirt »

Pressie wrote:The more I look at it, I am not so certain that Rf3 wins, as Diep clearly blundered on 39. Kg2. Should have played Kh1 setting up the following position.

[d] 1r4k1/5pp1/7p/3p4/Qpp2q2/7P/PP6/1R1R3K b
Could Diep have survived with 39. Kh1?
It think 1.. b3 2. a3 Qe4+ 3. Kh2 Re8 there ends up transposing to the last line that Eelco posted for Rxf3, which looks like a win.
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pijl

Re: Position in Rybka vs. Diep

Post by pijl »

Pressie wrote:How long does it take your program to find Rxf3?

In the game Rybka vs. Diep the following position was reached:

[d] 1r4k1/5pp1/7p/3p4/Qpp1q3/5N1P/PP3rP1/1R1R3K b
The Baron plays Rxf3 instantly, settling for a draw.
Richard.
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GenoM
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Full name: Evgenii Manev

Re: Position in Rybka vs. Diep

Post by GenoM »

pijl wrote:
Pressie wrote:How long does it take your program to find Rxf3?

In the game Rybka vs. Diep the following position was reached:

[d] 1r4k1/5pp1/7p/3p4/Qpp1q3/5N1P/PP3rP1/1R1R3K b
The Baron plays Rxf3 instantly, settling for a draw.
Richard.
Belka, Crafty, Spike would play Rxf3 for a draw too.
take it easy :)
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Pressie

Re: Position in Rybka vs. Diep

Post by Pressie »

Dirt wrote:
Pressie wrote:The more I look at it, I am not so certain that Rf3 wins, as Diep clearly blundered on 39. Kg2. Should have played Kh1 setting up the following position.
Could Diep have survived with 39. Kh1?
It think 1.. b3 2. a3 Qe4+ 3. Kh2 Re8 there ends up transposing to the last line that Eelco posted for Rxf3, which looks like a win.
After Elco's 9/59 1...Rxf3 2.gxf3 Qxf3+ 3.Kh2 Qf2+ 4.Kh1 b3

Istead of 5. a3? Qf3+

Better is 5. Rf1! and it appears to me that the game is back to even.

[d]1r4k1/5pp1/7p/3p4/Q1p5/1p5P/PP3q2/1R3R1K b
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Pressie

Re: Position in Rybka vs. Diep

Post by Pressie »

Better for black from the game would have been 39. Kh1 b3 40. Rf1 Qe4+ 41. Kh2

And black still has a slight advantage.

[d]1r4k1/5pp1/7p/3p4/Q1p1q3/1p5P/PP5K/1R3R2 b
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