Mate in 74

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Michael Diosi
Posts: 672
Joined: Mon Jun 22, 2009 1:37 pm

Mate in 74

Post by Michael Diosi »

Hi,

have fun...



[D]qn6/b1Kp3p/p1pB3p/p6p/P1NkP3/2pP4/2B5/8 w - -
Mate in 74
Grigori Popov
Alexei Khanian
dedicated to V. An
SuperProblem 2014
2nd special prize

Have fun!

Michael Diosi
http://www.playwitharena.com
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Ajedrecista
Posts: 1968
Joined: Wed Jul 13, 2011 9:04 pm
Location: Madrid, Spain.

Re: Mate in 74.

Post by Ajedrecista »

Hello Michael:
Michael Diosi wrote:Hi,

have fun...



[D]qn6/b1Kp3p/p1pB3p/p6p/P1NkP3/2pP4/2B5/8 w - -
Mate in 74
Grigori Popov
Alexei Khanian
dedicated to V. An
SuperProblem 2014
2nd special prize

Have fun!

Michael Diosi
http://www.playwitharena.com
I thought on 1.- Bf4 but was not able to see the bishop route f4-e3-c1-a3-d6. Copying the solution from superproblem.ru:

[pgn][Event "www.superproblem.ru (C006)"]
[Date "2014.02.21"]
[Round "?"]
[White ""]
[Black ""]
[Result "1-0"]
[SetUp "1"]
[FEN "qn6/b1Kp3p/p1pB3p/p6p/P1NkP3/2pP4/2B5/8 w - - 0 1"]
[Termination "normal"]
[PlyCount "147"]

1. Bf4 Kc5 2. Be3+ Kb4 3. Bc1 Kc5 4. Ba3+ Kd4 5. Bd6 h4 6. Bf4 Kc5 7. Be3+
Kb4 8. Bc1 Kc5 9. Ba3+ Kd4 10. Bd6 h3 11. Bf4 Kc5 12. Be3+ Kb4 13. Bc1 Kc5
14. Ba3+ Kd4 15. Bd6 h2 16. Bxh2 Kc5 17. Bd6+ Kd4 18. Bf4 Kc5 19. Be3+ Kb4
20. Bc1 Kc5 21. Ba3+ Kd4 22. Bd6 h5 23. Bf4 Kc5 24. Be3+ Kb4 25. Bc1 Kc5
26. Ba3+ Kd4 27. Bd6 h4 28. Bf4 Kc5 29. Be3+ Kb4 30. Bc1 Kc5 31. Ba3+ Kd4
32. Bd6 h3 33. Bf4 Kc5 34. Be3+ Kb4 35. Bc1 Kc5 36. Ba3+ Kd4 37. Bd6 h2 38.
Bxh2 Kc5 39. Bd6+ Kd4 40. Bf4 Kc5 41. Be3+ Kb4 42. Bc1 Kc5 43. Ba3+ Kd4 44.
Bd6 h6 45. Bf4 Kc5 46. Be3+ Kb4 47. Bc1 Kc5 48. Ba3+ Kd4 49. Bd6 h5 50. Bf4
Kc5 51. Be3+ Kb4 52. Bc1 Kc5 53. Ba3+ Kd4 54. Bd6 h4 55. Bf4 Kc5 56. Be3+
Kb4 57. Bc1 Kc5 58. Ba3+ Kd4 59. Bd6 h3 60. Bf4 Kc5 61. Be3+ Kb4 62. Bc1
Kc5 63. Ba3+ Kd4 64. Bd6 h2 65. Bxh2 Kc5 66. Bd6+ Kd4 67. Bf4 Kc5 68. Be3+
Kb4 69. Bc1 Kc5 70. Ba3+ Kd4 71. Bd6 Bb6+ 72. Kxb6 Qa7+ 73. Kxa7 c5 74.
Be5# 1-0[/pgn]

An alternative solution is 72.- ..., Qb7+; 73.- Kxb7.

I tried SF 6 and it saw mate in 10 after 64.- ..., h2 was played.

Then I tried Houdini 3 w32 (mate search = 74) and I randomly analyzed on some positions. After 52.- Bc1 was played, here is what Houdini got:

Code: Select all

  4/12	00:00	         444	      0	 0,00	Kb4c5 Bc1e3+ Kc5b4 Be3c1 Kb4c5
  5/12	00:00	         541	180.000	 0,00	Kb4c5 Bc1e3+ Kc5b4 Be3c1 Kb4c5
  6/12	00:00	         640	160.000	 0,00	Kb4c5 Bc1e3+ Kc5b4 Be3c1 Kb4c5
  7/12	00:00	         753	125.000	 0,00	Kb4c5 Bc1e3+ Kc5b4 Be3c1 Kb4c5
  8/12	00:00	         867	108.000	 0,00	Kb4c5 Bc1e3+ Kc5b4 Be3c1 Kb4c5
  9/12	00:00	       1.008	100.000	 0,00	Kb4c5 Bc1e3+ Kc5b4 Be3c1 Kb4c5
 10/12	00:00	       1.219	121.000	 0,00	Kb4c5 Bc1e3+ Kc5b4 Be3c1 Kb4c5
 11/12	00:00	       1.446	144.000	 0,00	Kb4c5 Bc1e3+ Kc5b4 Be3c1 Kb4c5
 12/12	00:00	       1.684	153.000	 0,00	Kb4c5 Bc1e3+ Kc5b4 Be3c1 Kb4c5
 13/12	00:00	       2.148	195.000	 0,00	Kb4c5 Bc1e3+ Kc5b4 Be3c1 Kb4c5
 14/18	00:00	       2.933	244.000	 0,00	Kb4c5 Bc1e3+ Kc5b4 Be3c1 Kb4c5
 15/18	00:00	       4.190	322.000	 0,00	Kb4c5 Bc1e3+ Kc5b4 Be3c1 Kb4c5
 16/20	00:00	       5.982	427.000	 0,00	Kb4c5 Bc1e3+ Kc5b4 Be3c1 Kb4c5
 17/21	00:00	      11.027	268.000	 0,00	Kb4c5 Bc1e3+ Kc5b4 Be3c1 Kb4c5
 18/26	00:00	      30.136	456.000	 0,00	Kb4c5 Bc1e3+ Kc5b4 Be3c1 Kb4c5
 19/31	00:00	     113.668	971.000	 0,00	Kb4c5 Bc1e3+ Kc5b4 Be3c1 Kb4c5
 20/37	00:00	     543.861	1.373.000	 0,00	Kb4c5 Bc1e3+ Kc5b4 Be3c1 Kb4c5
 21/38	00:00	   1.392.775	1.455.000	 0,00	Kb4c5 Bc1e3+ Kc5b4 Be3c1 Kb4c5
 22/38	00:01	   2.602.240	1.495.000	 0,00	Kb4c5 Bc1e3+ Kc5b4 Be3c1 Kb4c5
 23/44	00:04	   6.356.857	1.532.000	 0,00	Kb4c5 Bc1e3+ Kc5b4 Be3c1 Kb4c5
 24/45	00:09	  13.869.858	1.533.000	 0,00	Kb4c5 Bc1e3+ Kc5b4 Be3c1 Kb4c5
 25/60-	00:20	  30.422.593	1.507.000	-0,06	Kb4c5 Bc1a3+
 25/60-	00:20	  30.619.514	1.502.000	-0,18	Kb4c5 Bc1a3+
 25/110-	08:04	 701.178.304	1.447.000	-12,54	Kb4c5 Bc1a3+
 25/110	08:39	 752.443.323	1.449.000	-2,84	Kb4c5 Bc1a3+ Kc5d4 Ba3d6 h5h4 Bd6f4 Kd4c5 Bf4e3+ Kc5b4 Be3c1 Kb4c5 Bc1a3+ Kc5d4 Ba3d6 h4h3 Bd6f4 Kd4c5 Bf4e3+ Kc5b4 Be3c1 Kb4c5 Bc1a3+ Kc5d4 Ba3d6 h3h2 Bd6xh2 Kd4c5 Bh2d6+ Kc5d4 Kc7c8 Ba7b6 Bd6f4 Kd4c5 Bf4e3+ Kc5b4 Nc4xb6 Qa8a7 Nb6d5+ c6xd5 Be3xa7 d5xe4 d3xe4 Nb8c6 Ba7f2 Nc6e5 Kc8c7 Kb4c4 Bf2b6 d7d5 e4xd5 Kc4xd5 Bb6xa5 Kd5c4 Kc7b7 Ne5g4 Ba5b6 a6a5 Kb7a6 Ng4f6 Bb6xa5 Nf6d5 Ka6b7 Nd5e3 Ba5xc3 Ne3xc2 a4a5 Nc2a3 a5a6 Na3b5 Kb7b6 Nb5d6 Bc3e1 Nd6c8+ Kb6b7 Nc8d6+ Kb7c6 Nd6c8 Be1f2 Nc8e7+ Kc6b7 Ne7f5
 26/110-	08:39	 752.688.120	1.449.000	-2,96	Kb4c5 Bc1a3+
 26/110-	08:39	 752.921.514	1.449.000	-3,19	Kb4c5 Bc1a3+
 26/110-	14:12	1.367.530.605	1.605.000	-23,93	Kb4c5 Bc1a3+
 26/110	15:53	1.549.393.037	1.625.000	-13,33	Kb4c5 Bc1a3+ Kc5d4 Ba3d6 h5h4 Bd6f4 Kd4c5 Bf4e3+ Kc5b4 Be3c1 Kb4c5 Bc1a3+ Kc5d4 Ba3d6 h4h3 Bd6f4 Kd4c5 Bf4e3+ Kc5b4 Be3c1 Kb4c5 Bc1a3+ Kc5d4 Ba3d6 h3h2 Bd6xh2 Kd4c5 Bh2d6+ Kc5d4 Kc7c8 Ba7b6 Bd6f4 Kd4c5 Bf4e3+ Kc5b4 Nc4xb6 Qa8a7 Nb6c4 Qa7xe3 Nc4xe3 Kb4c5 Kc8xb8 d7d5 e4xd5 c6xd5 Kb8b7 Kc5d4 Ne3f5+ Kd4e5 Kb7xa6 Ke5xf5 Ka6xa5 Kf5f4 Ka5b4 Kf4e5 Kb4b5 Ke5d4 a4a5 Kd4e3 a5a6 Ke3d2 Bc2b3 c3c2 Bb3xc2 Kd2xc2 d3d4 Kc2d2 a6a7 Kd2c1 Kb5c5 Kc1c2 Kc5xd5 Kc2d3 Kd5c5 Kd3e4 d4d5
 27/110-	15:54	1.549.470.103	1.625.000	-13,88	Kb4c5 Bc1a3+
 27/110-	15:55	1.551.263.097	1.624.000	-14,99	Kb4c5 Bc1a3+
 27/110-	15:56	1.552.563.231	1.624.000	-18,18	Kb4c5 Bc1a3+
 27/110	16:16	1.584.518.186	1.624.000	-13,33	Kb4c5 Bc1a3+ Kc5d4 Ba3d6 h5h4 Bd6f4 Kd4c5 Bf4e3+ Kc5b4 Be3c1 Kb4c5 Bc1a3+ Kc5d4 Ba3d6 h4h3 Bd6f4 Kd4c5 Bf4e3+ Kc5b4 Be3c1 Kb4c5 Bc1a3+ Kc5d4 Ba3d6 h3h2 Bd6xh2 Kd4c5 Bh2d6+ Kc5d4 Bd6f4 Kd4c5 Bf4e3+ Kc5b4 Be3c1 Ba7b6+ Kc7c8 Kb4c5 Bc1e3+ Kc5b4 Nc4xb6 Qa8a7 Nb6c4 Qa7xe3 Nc4xe3 Kb4c5 Kc8xb8 d7d5 e4xd5 c6xd5 Kb8b7 Kc5d4 Ne3f5+ Kd4e5 Kb7xa6 Ke5xf5 Ka6xa5 Kf5f4 Ka5b4 Kf4e5 Kb4b5 Ke5d4 a4a5 Kd4e3 a5a6 Ke3d2 Bc2b3 c3c2 Bb3xc2 Kd2xc2 d3d4 Kc2d2 a6a7 Kd2c1 Kb5c5 Kc1c2 Kc5xd5 Kc2d3 Kd5c5 Kd3e4 d4d5
 28/110-	16:17	1.586.227.385	1.623.000	-13,88	Kb4c5 Bc1a3+
 28/110-	16:20	1.589.102.423	1.622.000	-14,99	Kb4c5 Bc1a3+
 28/110-	16:30	1.604.761.976	1.620.000	-18,18	Kb4c5 Bc1a3+
 28/110	16:58	1.652.832.981	1.623.000	-M22	Kb4c5 Bc1a3+ Kc5d4 Ba3d6 h5h4 Bd6f4 Kd4c5 Bf4e3+ Kc5b4 Be3c1 Kb4c5 Bc1a3+ Kc5d4 Ba3d6 h4h3 Bd6f4 Kd4c5 Bf4e3+ Kc5b4 Be3c1 Kb4c5 Bc1a3+ Kc5d4 Ba3d6 h3h2 Bd6xh2 Kd4c5 Bh2d6+ Kc5d4 Bd6f4 Kd4c5 Bf4e3+ Kc5b4 Be3c1 Ba7b6+ Kc7xb6 Qa8a7+ Kb6xa7 Kb4c5 Bc1a3+ Kc5d4 Ba3d6 c6c5 Bd6e5+
 29/110	18:08	1.729.517.667	1.590.000	-M22	Kb4c5 Bc1a3+ Kc5d4 Ba3d6 h5h4 Bd6f4 Kd4c5 Bf4e3+ Kc5b4 Be3c1 Kb4c5 Bc1a3+ Kc5d4 Ba3d6 h4h3 Bd6f4 Kd4c5 Bf4e3+ Kc5b4 Be3c1 Kb4c5 Bc1a3+ Kc5d4 Ba3d6 h3h2 Bd6xh2 Kd4c5 Bh2d6+ Kc5d4 Bd6f4 Kd4c5 Bf4e3+ Kc5b4 Be3c1 Ba7b6+ Kc7xb6 Qa8a7+ Kb6xa7 Kb4c5 Bc1a3+ Kc5d4 Ba3d6 c6c5 Bd6e5+
 30/110	19:04	1.812.086.145	1.584.000	-M22	Kb4c5 Bc1a3+ Kc5d4 Ba3d6 h5h4 Bd6f4 Kd4c5 Bf4e3+ Kc5b4 Be3c1 Kb4c5 Bc1a3+ Kc5d4 Ba3d6 h4h3 Bd6f4 Kd4c5 Bf4e3+ Kc5b4 Be3c1 Kb4c5 Bc1a3+ Kc5d4 Ba3d6 h3h2 Bd6xh2 Kd4c5 Bh2d6+ Kc5d4 Bd6f4 Kd4c5 Bf4e3+ Kc5b4 Be3c1 Ba7b6+ Kc7xb6 Qa8a7+ Kb6xa7 Kb4c5 Bc1a3+ Kc5d4 Ba3d6 c6c5 Bd6e5+
 31/110	20:54	1.996.390.061	1.591.000	-M22	Kb4c5 Bc1a3+ Kc5d4 Ba3d6 h5h4 Bd6f4 Kd4c5 Bf4e3+ Kc5b4 Be3c1 Kb4c5 Bc1a3+ Kc5d4 Ba3d6 h4h3 Bd6f4 Kd4c5 Bf4e3+ Kc5b4 Be3c1 Kb4c5 Bc1a3+ Kc5d4 Ba3d6 h3h2 Bd6xh2 Kd4c5 Bh2d6+ Kc5d4 Bd6f4 Kd4c5 Bf4e3+ Kc5b4 Be3c1 Ba7b6+ Kc7xb6 Qa8a7+ Kb6xa7 Kb4c5 Bc1a3+ Kc5d4 Ba3d6 c6c5 Bd6e5+
 31/110	21:13	2.029.490.848	1.595.000	-M22	Kb4c5 Bc1a3+ Kc5d4 Ba3d6 h5h4 Bd6f4 Kd4c5 Bf4e3+ Kc5b4 Be3c1 Kb4c5 Bc1a3+ Kc5d4 Ba3d6 h4h3 Bd6f4 Kd4c5 Bf4e3+ Kc5b4 Be3c1 Kb4c5 Bc1a3+ Kc5d4 Ba3d6 h3h2 Bd6xh2 Kd4c5 Bh2d6+ Kc5d4 Bd6f4 Kd4c5 Bf4e3+ Kc5b4 Be3c1 Ba7b6+ Kc7xb6 Qa8a7+ Kb6xa7 Kb4c5 Bc1a3+ Kc5d4 Ba3d6 c6c5 Bd6e5+
Bingo! Checkmate in 74 - 52 = 22 found! ..., Bb6+ is played before than in the solution but the result is the same.

I stopped the analysis after 21 minutes and 13 seconds; there were 1978 TB hits to the full set of 5-man Nalimov EGTB at that moment. I used the two cores of an Intel Pentium D930 (3 GHz) of year 2006; hash size was 1 GB and EGTB hash was 64 MB.

Regards from Spain.

Ajedrecista.
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Dann Corbit
Posts: 12538
Joined: Wed Mar 08, 2006 8:57 pm
Location: Redmond, WA USA

Re: Mate in 74.

Post by Dann Corbit »

Is there any place to get the problems from superproblem.ru in EPD format?
Taking ideas is not a vice, it is a virtue. We have another word for this. It is called learning.
But sharing ideas is an even greater virtue. We have another word for this. It is called teaching.
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User avatar
Michael Diosi
Posts: 672
Joined: Mon Jun 22, 2009 1:37 pm

Re: Mate in 74.

Post by Michael Diosi »

Hi,

got them from the Winchloe database. Also I replyed in another thread about an author you asked for last week, the mate un 48.

Michael Diosi
http://www.playwitharena.com
Last edited by Michael Diosi on Wed Dec 30, 2015 9:56 pm, edited 1 time in total.
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peter
Posts: 3185
Joined: Sat Feb 16, 2008 7:38 am
Full name: Peter Martan

Re: Mate in 74

Post by peter »

After 39 moves, study mode off (default):

qn6/b1Kp3p/p1pB4/p7/P1NkP3/2pP4/2B5/8 w - - 0 1

Analysis by SF MateFinder 64 POPCNT:

40.Lf4 Kc5 41.Le3+ Kb4 42.Lc1 Kc5 43.La3+ Kd4 44.Ld6 h6 45.Lf4 Kc5 46.Le3+ Kb4 47.Lc1 Kc5 48.La3+ Kd4 49.Ld6 h5 50.Lf4 Kc5 51.Le3+ Kb4 52.Lc1 Kc5 53.La3+ Kd4 54.Ld6 h4 55.Lf4 Kc5 56.Le3+ Kb4 57.Lc1 Kc5 58.La3+ Kd4 59.Ld6 h3 60.Lf4 Kc5 61.Le3+ Kb4 62.Lc1 Kc5 63.La3+ Kd4 64.Ld6 h2 65.Lxh2 Kc5 66.Ld6+ Kd4 67.Lf4 Kc5 68.Le3+ Kb4 69.Lc1 Lb6+ 70.Kxb6 Da7+ 71.Kxa7 Kc5 72.La3+ Kd4 73.Ld6 c5 74.Le5#
+- (#35) Tiefe: 56/81 00:03:36 5181MN

Seeing from there it worked rather fast, some more moves would have been possible too but I'd be rather sure not the full length from the real starting position
Peter.
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Ignacio
Posts: 177
Joined: Wed Mar 08, 2006 8:15 pm

Re: Mate in 74

Post by Ignacio »

Gustav 3.3b (f1, z14) needs 1 min 42 sec. for mate in 74.
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