Wich Engine can Solve this Puzzle?

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Dann Corbit
Posts: 12537
Joined: Wed Mar 08, 2006 8:57 pm
Location: Redmond, WA USA

Re: Wich Engine can Solve this Puzzle?

Post by Dann Corbit »

Code: Select all

Analysis of Q:\whosol.epd   
2017-04-28 3:14:54 PM Level: 300 Seconds
Analyzing engine: Sting-sf-73

 1                      
    Avoid move: 
    Best move (Sting-sf-73): Ng4-f6
    Not found in: 05:00
      2	00:00	         183	485	+5.13	Bc2+ Kg7 d8Q
      3	00:00	         894	2,365	-0.36	Nf6+ Kg6 Bc2+ Kxf6 d8Q+ Kf7
      4	00:00	       1,456	3,851	-0.36	Nf6+ Kg6 Bc2+ Kxf6 d8Q+ Kf7
      5+	00:00	       1,529	4,034	-0.16	Nf6+
      5+	00:00	       1,568	4,137	+0.76	Nf6+
      5+	00:00	       1,667	4,398	+0.76	Nf6+
      5	00:00	       1,932	5,084	+0.84	Nf6+ Kg6 Bc2+ Kxf6 d8Q+ Kg7 Qe7+ Nf7+ Kd5
      6+	00:00	       2,254	5,931	+1.05	Nf6+
      6	00:00	       2,603	6,832	+1.05	Nf6+ Kg6 Bh5+ Kxf6 d8Q+ Kf5 Qc8+ Ke4 Qxa6
      7+	00:00	       3,028	7,947	+1.17	Nf6+
      7	00:00	       4,352	11,362	+1.17	Nf6+ Kg6 Bh5+ Kxf6 d8Q+ Kf5 Qc8+ Ke4 Bg6+ Kf3 Qxa6 Kxg3
      8+	00:00	       4,819	12,452	+1.41	Nf6+
      8+	00:00	       4,889	12,633	+1.41	Nf6+
      8+	00:00	       5,583	14,389	+2.90	Nf6+
      8	00:00	       7,434	19,061	+3.15	Nf6+ Kg6 Bh5+ Kg7 d8Q Nf7+ Bxf7 Kxf7 Kd5
      9-	00:00	      16,112	37,124	+2.97	Nf6+
      9-	00:00	      17,783	40,507	+2.90	Nf6+
      9-	00:00	      27,031	55,619	+0.51	Nf6+
      9	00:00	      29,853	60,924	 0.00	Nf6+ Kg7 Nh5+ Kg6 Nf4+ Kg7 Nh5+
     10-	00:00	      46,472	93,505	-0.12	Nf6+
     10-	00:00	      52,471	104,942	-0.24	Nf6+
     10-	00:00	      79,763	154,879	-1.10	Nf6+
     10	00:00	     130,666	243,779	-1.21	Nxe3 Ba5 Be2 Ne4+ Ke5 Nb8 Kxe4 Nxd7 Kd3 Kg6 Kc2
     11-	00:00	     196,995	356,875	-1.33	Nxe3
     11-	00:00	     221,561	394,236	-1.45	Nxe3
     11-	00:00	     330,721	490,683	-1.90	Nxe3
     11	00:00	     364,211	529,376	-1.85	Nxe3 Ba5 Be2 Nb8 Bd3+ Kg8 Bc2 Kf7 Nc4 Bd8 Ne5+ Kf6 Bd3
     12-	00:00	     492,801	681,605	-1.97	Nxe3
     12	00:00	     600,338	800,450	-2.06	Nxe3 Ba5 Be2 Nb8 Bd3+ Kg8 Bc2 Kf7 Bb3+ Kg7 Bc2 Nf7+ Ke6 Bd8 Nf5+ Kf8 g4 Ng5+ Kd6
     13-	00:00	     910,298	1,119,677	-2.18	Nxe3
     13-	00:00	   1,185,769	1,372,417	-2.30	Nxe3
     13	00:00	   1,490,729	1,630,994	-2.30	Nxe3 Ba5 Kc6 Nb8+ Kb5 Nxd7 Kxa5 Kg7 Kb5 Ne4 Bc2 Nxg3 Kc6 Ne5+ Kxc5
     14-	00:00	   1,784,003	1,824,133	-2.42	Nxe3
     14	00:01	   2,044,879	2,002,819	-2.46	Nxe3 Ba5 Be2 Nb8 Bd3+ Kg8 Bf5 Kf7 g4 Nf3 Be4 Nd4 Kxc5 Bb6+ Kxb6 Nxd7+ Ka5
     15+	00:01	   2,430,864	2,276,089	-2.34	Nxe3
     15+	00:01	   2,481,071	2,280,396	-2.22	Nxe3
     15-	00:01	   2,931,156	2,518,175	-2.58	Nxe3
     15	00:01	   3,196,671	2,657,249	-2.58	Nxe3 Ba5 Be2 Nb8 Bd3+ Kg8 Bf5 Kf7 Ng4 Nxd7 Kxd7 h5 Ne3 Nf3 Kd6 Nd4 Kxc5 Nxf5 Nxf5
     16-	00:01	   4,792,243	3,365,339	-2.70	Nxe3
     16	00:01	   5,493,627	3,604,742	-2.70	Nxe3 Ba5 Be2 Nb8 Ke7 Bc7 Bb5 Nxd7 Bd3+ Kg8 Kxd7 Bxg3 Kc6 Bf2 Ng4 Bd4 Nxh6+ Kg7 Ng4
     17+	00:01	   7,721,598	4,311,333	-2.58	d8Q
     17+	00:01	   7,881,657	4,328,202	-2.46	d8Q
     17+	00:01	   8,241,212	4,348,924	-2.28	d8Q
     17	00:02	   9,004,166	4,461,925	-2.26	d8Q Nf7+ Ke7 Nxd8 Kxd8 Ba5+ Kd7 e2 Bxe2 Nb4 Ne3 Kg7 Bd1 Bb6 Kd6 Ba7 Ke5 Bb8+ Ke4 Kg6 g4 Kg5 Nc2 Bf4 Nxb4 cxb4 Kd3
     18-	00:02	  10,669,262	4,754,573	-2.38	d8Q
     18-	00:02	  11,484,244	4,839,546	-2.50	d8Q
     18	00:02	  12,180,006	4,883,723	-2.26	d8Q Nf7+ Ke7 Nxd8 Kxd8 Ba5+ Kd7 Bc7 Nxe3 Bxg3 Nd5 Be5 Ke6 Bg7 Kf7 h5 Bxh5 Nb4 Nxb4 cxb4 Bg6+ Kh6 Bc2 Kg5 Ke6 Kf4 Kd5
     19-	00:02	  13,856,968	5,098,222	-2.38	d8Q
     19	00:02	  15,007,235	5,254,634	-2.26	d8Q Nf7+ Ke7 Nxd8 Kxd8 Ba5+ Kd7 Bc7 Nxe3 Bxg3 Kc6 Kg6 Kb5 Nc7+ Kxc5 Bf2 Kc6 Ne6 Ng4 Ba7 Kd5 Nd4 Ne5+ Kg7 Kc4
     20-	00:03	  18,255,170	5,567,297	-2.34	d8Q
     20-	00:03	  19,856,902	5,666,924	-2.42	d8Q
     20-	00:03	  22,746,398	5,799,693	-2.54	d8Q
     20	00:04	  24,172,182	5,915,854	-2.46	d8Q Nf7+ Ke7 Nxd8 Kxd8 Ba5+ Kd7 Bc7 Nxe3 Bxg3 Kc6 Kg6 Kb6 Nc7 Bc2+ Kf6 Nf5 Be5 Nxh6 Nd5+ Kxc5 Ne3 Be4 Ke6 Kb4 Bg7 Kb3 Ke5
     21	00:04	  29,024,548	6,176,749	-2.42	d8Q Nf7+ Ke7 Nxd8 Kxd8 Ba5+ Kd7 Bc7 Nxe3 Bxg3 Kc6 Kg6 Kb6 Nc7 Bc2+ Kf6 Nf5 Bf4 Kxc5 h5 Kd4 Be5+ Ke4 Ne6 Kd5 Nf4+ Ke4 Nh3 Ne3 Ke6 Nc4 Nf2+ Ke3 Ng4+ Kd3
     22-	00:05	  35,948,402	6,456,250	-2.54	d8Q
     22-	00:06	  42,077,351	6,701,282	-2.66	d8Q
     22	00:07	  49,408,526	6,929,667	-2.70	d8Q Nf7+ Ke7 Nxd8 Kxd8 Ba5+ Kd7 Bc7 Nxe3 Bxg3 Nd5 Be5 Ke6 Bg7 Bc2+ Kg8 Kf5 Bd4 Kg6 Nb4 Nxb4 cxb4 Bb3+ Kf8 Kxh6 Ke7 Kg5 Kd6 Kf5
     23-	00:08	  63,084,417	7,228,648	-2.82	d8Q
     23-	00:10	  77,879,110	7,520,192	-2.94	d8Q
     23	00:13	 115,242,691	8,248,707	-3.03	d8Q Nf7+ Ke7 Nxd8 Kxd8 Ba5+ Ke8 e2 Bxe2 Nb4 Ne3 Bc7 Kf7 Bxg3 Bd1 Kh8 Kg6 Kg8 Nc2 Nd5 Kxh6 Kf7 Kg5 Ke6 Kg4 Bd6 Be2 Ke5 Bd3 Nf4 Bc4
     24	00:16	 136,482,345	8,368,016	-3.03	d8Q Nf7+ Ke7 Nxd8 Kxd8 Ba5+ Ke8 e2 Bxe2 Nb4 Ne3 Bc7 Kf7 Bxg3 Bd1 Kh8 Kg6 Kg8 Bb3+ Kf8 Kxh6 Bf4+
     25	00:19	 164,326,287	8,585,939	-2.94	d8Q Nf7+ Ke7 Nxd8 Kxd8 Ba5+ Ke7 e2 Bxe2 Nb4 Ne3 Bc7 Kf7 Bxg3 Bd1 Kh8 Kg6 Kg8 Bb3+ Kf8 Nc2 Ke7 Kxh6 Kf6 Kh5 Kf5 Nxb4 cxb4 Bc2+ Kf4 Kg6 Bh4 Kf7
     26	00:26	 236,382,478	8,989,977	-2.94	d8Q Nf7+ Ke7 Nxd8 Kxd8 Ba5+ Ke8 e2 Bxe2 Nb4 Ne3 Kg7 Bd1 Bc7 g4 Kf6 Kd7 Be5 Nc2 Nd3 Be2 Nf4 Bf3 Kg5 Kc6 Bd4 Kb5 Nd3 Be4 Ne5 Bf5 Nxg4 Bd3
     27	00:36	 340,389,559	9,358,303	-2.94	d8Q Nf7+ Ke7 Nxd8 Kxd8 Ba5+ Ke7 e2 Bxe2 Nb4 Ne3 Bc7 Kf6 Bxg3 Bd1 Bf2 Nc2 Bd4+ Kf5 Kg7 Nxb4 cxb4 Bb3 Kf8 Kg6 Bg7 Kf5 Ke7 Ke4 h5 Kf4 h4 Kf3
     28	00:56	 521,891,996	9,185,328	-2.94	d8Q Nf7+ Ke7 Nxd8 Kxd8 Ba5+ Kc8 Bc7 Nxe3 Bxg3 Nd5 Be5 Kd7 h5 Bc2+ Kh6 Ke6 Bd4 Kf5 Nb4 Nxb4 cxb4 Bd1 h4 Kg4 Bf6 Bb3 Kg7 Bd1 Bg5 Bc2 Kf6 Kf3 Ke5 Kg4 Kd4 Ba4
     29	01:16	 711,477,178	9,258,600	-2.94	d8Q Nf7+ Ke7 Nxd8 Kxd8 Ba5+ Kd7 Bc7 Ke6 e2 Bxe2 Nb4 Ne3 Bxg3 Kf6 Kh8 Bd1 h5 Kf5 h4 Kg4 Kg7 Ba4 Kf6 Nc2 Nd3 Bb3 c4 Ba4 Ne5+ Kh3 Kf5 Kg2 Ke4 Na3 Ke3 Nb5 Kd2 Na3 Ke2 Bb5 Kd3 Ba4 Ke3
     30+	01:49	1,082,764,336	9,873,110	-2.86	Nf6+
     30+	01:53	1,128,077,900	9,904,455	-2.78	Nf6+
     30+	02:54	1,765,514,485	10,137,837	+3.14	Nf6+
     30	03:28	2,190,260,277	10,492,867	+3.43	Nf6+ Kg7 Nh5+ Kg6 Bc2+ Kxh5 d8Q Kg4 Qf6 Kxg3 Qe5+ Kf2 Qh2+ Ke1 Qh1+ Ke2 Ke5 c4 Kd5 Nh3 Qxh3 Kd2 Qg2+ e2 Kxc4 Kxc2 Qxe2+ Kb1 Qd1+ Kb2 Qb3+ Kc1 Qa2 c2 Kb3 Kd2 Qxc2+
     31+	03:41	2,342,845,470	10,591,812	+3.55	Nf6+
     31+	03:49	2,434,128,044	10,624,554	+3.67	Nf6+
     31+	04:16	2,757,001,413	10,730,304	+4.54	Nf6+
     31	04:31	2,922,865,120	10,775,102	+4.84	Nf6+ Kg7 Nh5+ Kg6 Bc2+ Kxh5 d8Q Kg4 Qf6 Kxg3 Qe5+ Kf2 Qh2+ Ke1 Qh1+ Kf2 Bd1 c4+ Kd5 Nc7+ Kxc4 Bd6 Qh5 Nce6 Qe2+ Kg1 Qxe3+ Kg2 Qxc3 Bc7 Qf6 Kg3 Qxh6 Kf4 Qf6+ Kg3 Qf1 Bd8 Qg1+ Kf4 Qf2+ Ke4
   2017-04-28 3:19:58 PM, Time for this analysis: 00:05:00, Rated time: 05:00

0 of 1 matching moves
2017-04-28 3:19:59 PM, Total time: 12:05:05 AM
Rated time: 05:00 = 300 Seconds
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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pilgrimdan
Posts: 405
Joined: Sat Jul 02, 2011 10:49 pm

Re: Wich Engine can Solve this Puzzle?

Post by pilgrimdan »

Dann Corbit wrote:
Vinvin wrote:
Engin wrote:i watched a video on youtube that is very amazing here:

https://www.youtube.com/watch?v=5say2stC7eQ

FEN postion:

8/3P3k/n2K3p/2p3n1/1b4N1/2p1p1P1/8/3B4 w - - 0 1

the solution:

1.Sf6+ Kg7 2.Sh5+ Kg6 3.Lc2+ Kxh5 4.d8Q Sf7+ 5.Ke6 Sxd8+ 6.Kf5 e2 7.Le4 e1N 8.Ld5 c2 9.Lc4 c1N 10.Lb5 Sc7 11.La4 c4 12.Ld1+ Se2 13.Lxe2+ Sf3 14.Lxf3#
HIARCS in 2005 : http://www.talkchess.com/forum/viewtopi ... 285#642285
If it is a mate in 14, then Chest (in brute force mode) is wrong, because I let it search for mate in 14 to completion and it did not find a mate.
after 4. ...Kg4! there is no obvious mate...

[d]3Q4/8/n2K3p/2p3nk/1b6/2p1p1P1/2B5/8 b - - 0 4
4. …Kg4!

5.Kc6 Ba3 6.Bd1+ Kxg3 7.Qd6+ Kg2 8.Qxh6 e2 9.Qxg5+ Kf1 10.Bxe2+ Kxe2 11.Qg2+ Ke3 12.Qg3+ Kd2 13.Qf2+ Kc1 14.Qf1+ Kd2 15.Qxa6 c2 16.Qa5+ Bb4 17.Qd8+ Kc1 18.Qd5 Kb2 19.Qg2 Kb1 20.Qe4 Kb2 21.Qe5+ Kb1 22.Qf5 Kb2 23.Qf6+ Bc3 24.Qf2 Kb1 25.Qf5 Kb2 26.Qxc2+ Kxc2 27.Kxc5 1/2-1/2
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peter
Posts: 3185
Joined: Sat Feb 16, 2008 7:38 am
Full name: Peter Martan

Re: Wich Engine can Solve this Puzzle?

Post by peter »

Hi Dan!
pilgrimdan wrote: after 4. ...Kg4! there is no obvious mate...

[d]3Q4/8/n2K3p/2p3nk/1b6/2p1p1P1/2B5/8 b - - 0 4
4. …Kg4!

5.Kc6...
?, 5.Bd1:

8/3P3k/n2K3p/2p3n1/1b4N1/2p1p1P1/8/3B4 w - - 0 1

1. Nf6+ Kg7 2. Nh5+ Kg6 3. Bc2+ Kxh5 4. d8=Q Kg4 5. Bd1+ Kxg3 6. Qe8 c4+ 7. Kc6
Kf4 8. Qg8 Nc5 9. Qxc4+ Nge4 10. Kd5 Ba3 11. Bc2 e2 12. Qxe2 Nf6+ 13. Kd4 Ncd7
14. Qf2+ Kg5 15. Kxc3 Kg4 16. Qf5+ Kg3 17. Kd2 Bb2 18. Ke2 h5 19. Ba4 Nf8 20.
Qf3+ Kh4 21. Qf4+ Ng4 22. Qxf8 Kg5 23. Bc2 Bf6 24. Qc8 Kh4 25. Qf5 Bb2 26. Bb3
Bc1 27. Be6 Bh6 28. Kf3 Nh2+ 29. Kg2 Ng4 30. Qg6 Bg5 31. Bf7 Ne3+ 32. Kf3 Kh3
33. Qxg5 Kh2 34. Qg3+ Kh1 35. Kxe3 h4 36. Bd5# 1-0


The ! after 4...Kg4 is right only as for the longest way to mate but it's not the author's thematic solution, which is a mate in 14 yet.

Beauty and clearness over longest distance to mate here in a great study from Gijs Van Breukelen 1970, which is not a mate in x- problem.

We had that here for the last time not long ago:
http://www.talkchess.com/forum/viewtopi ... 60&t=63642
Peter.
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pilgrimdan
Posts: 405
Joined: Sat Jul 02, 2011 10:49 pm

Re: Wich Engine can Solve this Puzzle?

Post by pilgrimdan »

peter wrote:Hi Dan!
pilgrimdan wrote: after 4. ...Kg4! there is no obvious mate...

[d]3Q4/8/n2K3p/2p3nk/1b6/2p1p1P1/2B5/8 b - - 0 4
4. …Kg4!

5.Kc6...
?, 5.Bd1:

8/3P3k/n2K3p/2p3n1/1b4N1/2p1p1P1/8/3B4 w - - 0 1

1. Nf6+ Kg7 2. Nh5+ Kg6 3. Bc2+ Kxh5 4. d8=Q Kg4 5. Bd1+ Kxg3 6. Qe8 c4+ 7. Kc6
Kf4 8. Qg8 Nc5 9. Qxc4+ Nge4 10. Kd5 Ba3 11. Bc2 e2 12. Qxe2 Nf6+ 13. Kd4 Ncd7
14. Qf2+ Kg5 15. Kxc3 Kg4 16. Qf5+ Kg3 17. Kd2 Bb2 18. Ke2 h5 19. Ba4 Nf8 20.
Qf3+ Kh4 21. Qf4+ Ng4 22. Qxf8 Kg5 23. Bc2 Bf6 24. Qc8 Kh4 25. Qf5 Bb2 26. Bb3
Bc1 27. Be6 Bh6 28. Kf3 Nh2+ 29. Kg2 Ng4 30. Qg6 Bg5 31. Bf7 Ne3+ 32. Kf3 Kh3
33. Qxg5 Kh2 34. Qg3+ Kh1 35. Kxe3 h4 36. Bd5# 1-0


The ! after 4...Kg4 is right only as for the longest way to mate but it's not the author's thematic solution, which is a mate in 14 yet.

Beauty and clearness over longest distance to mate here in a great study from Gijs Van Breukelen 1970, which is not a mate in x- problem.

We had that here for the last time not long ago:
http://www.talkchess.com/forum/viewtopi ... 60&t=63642
thanks Peter...

here is the output from CM9_Leko...

4:55 4/17 Mate11 175095667 4...Nf7+ 5.Ke6 Nxd8+ 6.Kf5 e2 7.Be4
e1=N 8.Bd5 c2 9.Bc4 c1=N 10.Bb5
Nc6 11.Bxc6 Nc7 12.Ba4 Nc2 13.Bxc2
Ne2 14.Bd1 Bd2 15.Bxe2#

2:23:21 4/17 1.82 -360360803 4...Kg4 5.Qf6 Kxg3 6.Qe5+ Kf2 7.Qf4+
Ke2 8.Qg4+ Kf2 9.Bd1 c4+ 10.Kd5
Bc5 11.Qxc4 Nh3 12.Qxa6 Nf4+ 13.Kxc5
e2 14.Bxe2 Nxe2 15.Qd3 h5 16.Kc4 h4
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peter
Posts: 3185
Joined: Sat Feb 16, 2008 7:38 am
Full name: Peter Martan

Re: Wich Engine can Solve this Puzzle?

Post by peter »

pilgrimdan wrote:here is the output from CM9_Leko...

4:55 4/17 Mate11 175095667 4...Nf7+ 5.Ke6 Nxd8+ 6.Kf5 e2 7.Be4
e1=N 8.Bd5 c2 9.Bc4 c1=N 10.Bb5
Nc6 11.Bxc6 Nc7 12.Ba4 Nc2 13.Bxc2
Ne2 14.Bd1 Bd2 15.Bxe2#

2:23:21 4/17 1.82 -360360803 4...Kg4 5.Qf6 Kxg3 6.Qe5+ Kf2 7.Qf4+
Ke2 8.Qg4+ Kf2 9.Bd1 c4+ 10.Kd5
Bc5 11.Qxc4 Nh3 12.Qxa6 Nf4+ 13.Kxc5
e2 14.Bxe2 Nxe2 15.Qd3 h5 16.Kc4 h4
After ..Kg4 there isn't a single one and only move that keeps White's winning chances or looses them at once, but the distance to mate will differ as for several candidate- moves in a range of 35 to 40.

Have a look at my .pgn, I gave in the thread of the link in my one but last one posting above already too, if you want to:

[pgn][Event "1970"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Van Breukelen, Gijs"]
[Black "Plaskett's, Puzzle"]
[Result "1-0"]
[Annotator "Martan,Peter"]
[FEN "8/3P3k/n2K3p/2p3n1/1b4N1/2p1p1P1/8/3B4 w - - 0 1"]
[SetUp "1"]

1.Nf6+ Kg7 2.Nh5+ Kg6 3.Bc2+ Kxh5 4.d8=Q Nf7+ { Youtube } ( 4...Kg4 5.Bd1+ Kxg3 ( 5...Kh3 $5 6.Qc8+ Kxg3 7.Qg4+ Kf2 8.Qe2+ Kg1 9.Qxe3+ Kg2 10.Qe2+ Kg3 11.Qxa6 c2 12.Bxc2 Nf3 13.Qe2 Nd4 14.Qe3+ Kg2 15.Be4+ Kf1 16.Ke5 Ba5 17.Bf5 Bc7+ 18.Ke4 Nxf5 19.Kxf5 h5 20.Ke4 Kg2 21.Qf3+ Kh2 22.Qxh5+ Kg2 23.Qf3+ Kg1 24.Qe2 Bg3 25.Kf3 Bf2 26.Qxf2+ Kh1 27.Qg2# ) 6.Qe8 c4+ 7.Kc6 Kf4 8.Qg8 Nc5 9.Qxc4+ Nge4 10.Kd5 Ba3 11.Bc2 e2 12.Qxe2 Nf6+ 13.Kd4 Ncd7 ( 13...Ng4 14.Qf1+ Kg5 15.Kxc3 Ne3 16.Qg1+ Ng4 17.Qa1 Kf4 18.Qxa3 Ne4+ 19.Kd4 Nef2 20.Qc5 Kg3 21.Bf5 h5 22.Qd6+ Kg2 23.Qg6 Kg3 24.Qxh5 Kf4 25.Bd7 Kg3 26.Qg5 Kf3 27.Be6 Nh6 28.Qxh6 Kg3 29.Ke3 Nd1+ 30.Kd2 Kf3 31.Kxd1 Ke4 32.Ke2 Ke5 33.Bb3 Ke4 34.Qg5 Kd4 35.Qe3# ) 14.Qf2+ ( 14.Qe3+ Kg4 15.Qe6+ Kg5 ( 15...Kf3 16.Qf5+ Kg3 17.Kxc3 h5 18.Ba4 Nc5 19.Qe5+ Kh3 20.Bc2 Ng4 21.Qxh5+ { 7:#16 } ) ( 15...Kg3 16.Ba4 Bb2 17.Qd6+ Kh4 18.Kd3 c2 19.Kxc2 Be5 20.Qe6 Kg5 21.Bxd7 Nxd7 22.Qxd7 Bf6 23.Qd5+ Kf4 24.Kd3 h5 25.Qe4+ Kg5 26.Qe6 Kg6 27.Ke4 h4 28.Kf4 h3 29.Qe4+ Kf7 30.Kf5 Be7 31.Qe6+ Ke8 32.Qc6+ Kf7 33.Qg6+ Kf8 34.Ke6 Bf6 35.Qf7# ) 16.Kxc3 Kf4 17.Kd2 ( 17.Qf5+ Ke3 18.Qd3+ Kf4 19.Qd4+ Kg5 20.Kd2 Bc5 21.Qd3 Kh4 22.Qf5 Bb4+ 23.Ke2 Bc3 24.Qf2+ Kh5 25.Qf3+ Ng4 26.Qxc3 Nde5 27.Qd2 Kh4 28.Qf4 Nd7 29.Bf5 Nf6 30.Bxg4 Nxg4 31.Kf3 h5 32.Ke4 Kh3 33.Qf1+ Kg3 34.Qg1+ Kh3 35.Kf4 h4 36.Qxg4+ Kh2 37.Kf3 h3 38.Kf2 Kh1 39.Qxh3# ) 17...Bb2 18.Qf5+ Kg3 19.Ke2 h5 20.Bb3 Nf8 21.Qf3+ Kh4 22.Qf4+ Ng4 23.Qxf8 Kg5 24.Bc2 Bf6 25.Qc8 Kh4 26.Qf5 Bb2 27.Bb3 Nh6 28.Qf4+ Ng4 29.Bf7 Bg7 30.Qf5 Bh6 31.Qxh5+ Kg3 32.Be6 Nf2 33.Qf3+ Kh4 34.Qxf2+ Kh5 35.Qf7+ Kg5 36.Qf5+ Kh4 37.Qg4# ) 14...Kg5 15.Kxc3 Kg4 16.Qf5+ Kg3 17.Kd2 Bb2 18.Ke2 h5 19.Ba4 Nf8 20.Qf3+ Kh4 21.Qf4+ Ng4 22.Qxf8 Kg5 23.Bc2 ( 23.Kf3 Ne5+ 24.Ke4 Ng4 25.Qf4+ Kh4 26.Be8 Be5 27.Qf5 Kg3 28.Bxh5 Nf2+ 29.Ke3 Nd3 30.Kxd3 Bf4 31.Qg4+ Kf2 32.Qf3+ Kg1 33.Ke2 Kh2 34.Kf1 Bg5 35.Qg2# ) 23...Bf6 24.Qc8 Kh4 25.Qf5 Bb2 26.Bb3 Bc1 27.Be6 Bh6 28.Kf3 Nh2+ 29.Kg2 Ng4 30.Qg6 Bg5 31.Bf7 Ne3+ 32.Kf3 Kh3 33.Qxg5 Kh2 34.Qg3+ Kh1 35.Kxe3 h4 36.Bd5# ) 5.Ke6 Nxd8+ 6.Kf5 e2 7.Be4 e1=N 8.Bd5 c2 9.Bc4 c1=N 10.Bb5 Nc6 11.Bxc6 Nc7 12.Ba4 Nb3 13.Bxb3 Nd5 14.Bd1+ Nf3 15.Bxf3# 1-0
[/pgn]

If you give SF enough time with good hardware and big hash you should be able to keep the mating- score backward to the position after ...Kg4 too, it's just a matter of enough patience.
:)
Peter.
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peter
Posts: 3185
Joined: Sat Feb 16, 2008 7:38 am
Full name: Peter Martan

Re: Wich Engine can Solve this Puzzle?

Post by peter »

peter wrote:If you give SF enough time with good hardware and big hash you should be able to keep the mating- score backward to the position after ...Kg4 too,
E.g.:

3Q4/8/n2K3p/2p3n1/1b4k1/2p1p1P1/2B5/8 w - - 0 1

Analysis by pedantFishW_2017-04-26_popcnt:

5.Bd1+ e2 6.Bxe2+ Kxg3 7.Qe8 c4+ 8.Kc6 Kf4 9.Qg8 c2 10.Qxc4+ Ke5 11.Qxc2 Ne6 12.Qb2+ Nd4+ 13.Kb6 Nb8 14.Qxb4 Nxe2 15.Qe1 Kd5 16.Qxe2 Nd7+ 17.Kb5 Ne5 18.Qd2+ Ke4 19.Qxh6 Nd3 20.Qh4+ Nf4 21.Kc5 Kf5 22.Qh1 Ke5 23.Qe1+ Kf5 24.Kd6 Kg4 25.Qb1 Kg5 26.Qf1 Kf5 27.Qf3 Kg5 28.Ke5 Ng6+ 29.Ke4 Nh4 30.Qf4+ Kh5 31.Qg3 Ng6 32.Kf5 Ne7+ 33.Ke6 Nd5 34.Kxd5 Kh6 35.Ke5 Kh7 36.Kf6 Kh6 37.Qg6#
+- (#33) Depth: 56/76 00:00:15 601MN
Peter.
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pilgrimdan
Posts: 405
Joined: Sat Jul 02, 2011 10:49 pm

Re: Wich Engine can Solve this Puzzle?

Post by pilgrimdan »

peter wrote:
peter wrote:If you give SF enough time with good hardware and big hash you should be able to keep the mating- score backward to the position after ...Kg4 too,
E.g.:

3Q4/8/n2K3p/2p3n1/1b4k1/2p1p1P1/2B5/8 w - - 0 1

Analysis by pedantFishW_2017-04-26_popcnt:

5.Bd1+ e2 6.Bxe2+ Kxg3 7.Qe8 c4+ 8.Kc6 Kf4 9.Qg8 c2 10.Qxc4+ Ke5 11.Qxc2 Ne6 12.Qb2+ Nd4+ 13.Kb6 Nb8 14.Qxb4 Nxe2 15.Qe1 Kd5 16.Qxe2 Nd7+ 17.Kb5 Ne5 18.Qd2+ Ke4 19.Qxh6 Nd3 20.Qh4+ Nf4 21.Kc5 Kf5 22.Qh1 Ke5 23.Qe1+ Kf5 24.Kd6 Kg4 25.Qb1 Kg5 26.Qf1 Kf5 27.Qf3 Kg5 28.Ke5 Ng6+ 29.Ke4 Nh4 30.Qf4+ Kh5 31.Qg3 Ng6 32.Kf5 Ne7+ 33.Ke6 Nd5 34.Kxd5 Kh6 35.Ke5 Kh7 36.Kf6 Kh6 37.Qg6#
+- (#33) Depth: 56/76 00:00:15 601MN
thanks again Peter...
you do good work...
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pilgrimdan
Posts: 405
Joined: Sat Jul 02, 2011 10:49 pm

Re: Wich Engine can Solve this Puzzle?

Post by pilgrimdan »

peter wrote:
pilgrimdan wrote:here is the output from CM9_Leko...

4:55 4/17 Mate11 175095667 4...Nf7+ 5.Ke6 Nxd8+ 6.Kf5 e2 7.Be4
e1=N 8.Bd5 c2 9.Bc4 c1=N 10.Bb5
Nc6 11.Bxc6 Nc7 12.Ba4 Nc2 13.Bxc2
Ne2 14.Bd1 Bd2 15.Bxe2#

2:23:21 4/17 1.82 -360360803 4...Kg4 5.Qf6 Kxg3 6.Qe5+ Kf2 7.Qf4+
Ke2 8.Qg4+ Kf2 9.Bd1 c4+ 10.Kd5
Bc5 11.Qxc4 Nh3 12.Qxa6 Nf4+ 13.Kxc5
e2 14.Bxe2 Nxe2 15.Qd3 h5 16.Kc4 h4
After ..Kg4 there isn't a single one and only move that keeps White's winning chances or looses them at once, but the distance to mate will differ as for several candidate- moves in a range of 35 to 40.

Have a look at my .pgn, I gave in the thread of the link in my one but last one posting above already too, if you want to:

[pgn][Event "1970"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Van Breukelen, Gijs"]
[Black "Plaskett's, Puzzle"]
[Result "1-0"]
[Annotator "Martan,Peter"]
[FEN "8/3P3k/n2K3p/2p3n1/1b4N1/2p1p1P1/8/3B4 w - - 0 1"]
[SetUp "1"]

1.Nf6+ Kg7 2.Nh5+ Kg6 3.Bc2+ Kxh5 4.d8=Q Nf7+ { Youtube } ( 4...Kg4 5.Bd1+ Kxg3 ( 5...Kh3 $5 6.Qc8+ Kxg3 7.Qg4+ Kf2 8.Qe2+ Kg1 9.Qxe3+ Kg2 10.Qe2+ Kg3 11.Qxa6 c2 12.Bxc2 Nf3 13.Qe2 Nd4 14.Qe3+ Kg2 15.Be4+ Kf1 16.Ke5 Ba5 17.Bf5 Bc7+ 18.Ke4 Nxf5 19.Kxf5 h5 20.Ke4 Kg2 21.Qf3+ Kh2 22.Qxh5+ Kg2 23.Qf3+ Kg1 24.Qe2 Bg3 25.Kf3 Bf2 26.Qxf2+ Kh1 27.Qg2# ) 6.Qe8 c4+ 7.Kc6 Kf4 8.Qg8 Nc5 9.Qxc4+ Nge4 10.Kd5 Ba3 11.Bc2 e2 12.Qxe2 Nf6+ 13.Kd4 Ncd7 ( 13...Ng4 14.Qf1+ Kg5 15.Kxc3 Ne3 16.Qg1+ Ng4 17.Qa1 Kf4 18.Qxa3 Ne4+ 19.Kd4 Nef2 20.Qc5 Kg3 21.Bf5 h5 22.Qd6+ Kg2 23.Qg6 Kg3 24.Qxh5 Kf4 25.Bd7 Kg3 26.Qg5 Kf3 27.Be6 Nh6 28.Qxh6 Kg3 29.Ke3 Nd1+ 30.Kd2 Kf3 31.Kxd1 Ke4 32.Ke2 Ke5 33.Bb3 Ke4 34.Qg5 Kd4 35.Qe3# ) 14.Qf2+ ( 14.Qe3+ Kg4 15.Qe6+ Kg5 ( 15...Kf3 16.Qf5+ Kg3 17.Kxc3 h5 18.Ba4 Nc5 19.Qe5+ Kh3 20.Bc2 Ng4 21.Qxh5+ { 7:#16 } ) ( 15...Kg3 16.Ba4 Bb2 17.Qd6+ Kh4 18.Kd3 c2 19.Kxc2 Be5 20.Qe6 Kg5 21.Bxd7 Nxd7 22.Qxd7 Bf6 23.Qd5+ Kf4 24.Kd3 h5 25.Qe4+ Kg5 26.Qe6 Kg6 27.Ke4 h4 28.Kf4 h3 29.Qe4+ Kf7 30.Kf5 Be7 31.Qe6+ Ke8 32.Qc6+ Kf7 33.Qg6+ Kf8 34.Ke6 Bf6 35.Qf7# ) 16.Kxc3 Kf4 17.Kd2 ( 17.Qf5+ Ke3 18.Qd3+ Kf4 19.Qd4+ Kg5 20.Kd2 Bc5 21.Qd3 Kh4 22.Qf5 Bb4+ 23.Ke2 Bc3 24.Qf2+ Kh5 25.Qf3+ Ng4 26.Qxc3 Nde5 27.Qd2 Kh4 28.Qf4 Nd7 29.Bf5 Nf6 30.Bxg4 Nxg4 31.Kf3 h5 32.Ke4 Kh3 33.Qf1+ Kg3 34.Qg1+ Kh3 35.Kf4 h4 36.Qxg4+ Kh2 37.Kf3 h3 38.Kf2 Kh1 39.Qxh3# ) 17...Bb2 18.Qf5+ Kg3 19.Ke2 h5 20.Bb3 Nf8 21.Qf3+ Kh4 22.Qf4+ Ng4 23.Qxf8 Kg5 24.Bc2 Bf6 25.Qc8 Kh4 26.Qf5 Bb2 27.Bb3 Nh6 28.Qf4+ Ng4 29.Bf7 Bg7 30.Qf5 Bh6 31.Qxh5+ Kg3 32.Be6 Nf2 33.Qf3+ Kh4 34.Qxf2+ Kh5 35.Qf7+ Kg5 36.Qf5+ Kh4 37.Qg4# ) 14...Kg5 15.Kxc3 Kg4 16.Qf5+ Kg3 17.Kd2 Bb2 18.Ke2 h5 19.Ba4 Nf8 20.Qf3+ Kh4 21.Qf4+ Ng4 22.Qxf8 Kg5 23.Bc2 ( 23.Kf3 Ne5+ 24.Ke4 Ng4 25.Qf4+ Kh4 26.Be8 Be5 27.Qf5 Kg3 28.Bxh5 Nf2+ 29.Ke3 Nd3 30.Kxd3 Bf4 31.Qg4+ Kf2 32.Qf3+ Kg1 33.Ke2 Kh2 34.Kf1 Bg5 35.Qg2# ) 23...Bf6 24.Qc8 Kh4 25.Qf5 Bb2 26.Bb3 Bc1 27.Be6 Bh6 28.Kf3 Nh2+ 29.Kg2 Ng4 30.Qg6 Bg5 31.Bf7 Ne3+ 32.Kf3 Kh3 33.Qxg5 Kh2 34.Qg3+ Kh1 35.Kxe3 h4 36.Bd5# ) 5.Ke6 Nxd8+ 6.Kf5 e2 7.Be4 e1=N 8.Bd5 c2 9.Bc4 c1=N 10.Bb5 Nc6 11.Bxc6 Nc7 12.Ba4 Nb3 13.Bxb3 Nd5 14.Bd1+ Nf3 15.Bxf3# 1-0
[/pgn]

If you give SF enough time with good hardware and big hash you should be able to keep the mating- score backward to the position after ...Kg4 too, it's just a matter of enough patience.
:)
looks like the first 2 moves for white are 5.Qf6 and 6.Qf1...

5.Qf6 Kxg3 6.Qf1 c4+ 7.Kd5 Nf3 8.Qe2 Bc5 9.Be4 Nd2 10.Ke5 Nxe4 11.Kxe4 c2 12.Qf3+ Kh2 13.Qf1 e2 14.Qxe2+ Kg3 15.Qxc4 h5 16.Qxc2 h4 17.Qd3+ Kf2 18.Kf4 Bd6+ 19.Qxd6 Ke2 20.Qxa6+ Kd2 21.Qa3 h3 22.Ke4 Kc2 23.Kd4 h2 24.Qa2+ Kd1 25.Kd3 h1=Q 26.Qb1# 1-0
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peter
Posts: 3185
Joined: Sat Feb 16, 2008 7:38 am
Full name: Peter Martan

Re: Wich Engine can Solve this Puzzle?

Post by peter »

pilgrimdan wrote:looks like the first 2 moves for white are 5.Qf6 and 6.Qf1...

5.Qf6 Kxg3 6.Qf1 c4+ 7.Kd5 Nf3 8.Qe2 Bc5 9.Be4 Nd2 10.Ke5 Nxe4 11.Kxe4 c2 12.Qf3+ Kh2 13.Qf1 e2 14.Qxe2+ Kg3 15.Qxc4 h5 16.Qxc2 h4 17.Qd3+ Kf2 18.Kf4 Bd6+ 19.Qxd6 Ke2 20.Qxa6+ Kd2 21.Qa3 h3 22.Ke4 Kc2 23.Kd4 h2 24.Qa2+ Kd1 25.Kd3 h1=Q 26.Qb1# 1-0
Not the very best moves along your line, Dan, 8...Bc5?! :

8/8/n6p/2bK4/2p5/2p1pnk1/2B1Q3/8 w - - 0 1

Analysis by pedantFishW_2017-04-26_popcnt:

9.Be4 Nh4 10.Qxc4 c2 11.Bxc2 Ng2 12.Ke4 Nc7 13.Qxc5 Ne6 14.Qd6+ Nef4 15.Bd1 Kf2 16.Bf3 e2 17.Qd4+ Kf1 18.Bxg2+ Nxg2 19.Qd3 Ne1 20.Qe3 Nc2 21.Qf4+ Kg1 22.Kf3 e1N+ 23.Kg3 Nd3 24.Qd2 Nce1 25.Qxh6 Kf1 26.Qe3 Ng2 27.Qxd3+ Ke1 28.Qc3+ Ke2 29.Kxg2 Kd1 30.Qb2 Ke1 31.Kf3 Kd1 32.Ke3 Ke1 33.Qa1#
+- (#25) Depth: 49/50 00:00:38 1636MN

But after 8...Nc7 instead:

8/2n5/7p/3K4/1bp5/2p1pnk1/2B1Q3/8 w - - 0 1

Analysis by pedantFishW_2017-04-26_popcnt:

9.Kxc4 Bd6 10.Bd1 Ne5+ 11.Kd4 Kf4 12.Qxe3+ Kf5 13.Bc2+ Ke6 14.Qxh6+ Ke7 15.Qh4+ Ke6 16.Bb3+ Kd7 17.Ba4+ Kc8 18.Qh6 c2 19.Bxc2 Nb5+ 20.Kd5 Kc7 21.Qg7+ Kb6 22.Qg1+ Kc7 23.Ba4 Nc3+ 24.Ke6 Nxa4 25.Qa7+ Kc6 26.Qxa4+ Kc5 27.Qa3+ Kc4 28.Qxd6 Nd3 29.Qd5+ Kc3 30.Kf5 Kc2 31.Qc4+ Kd2 32.Ke4 Nc1 33.Qc7 Nb3 34.Qc6 Na1 35.Qd6+ Kc2 36.Qc5+ Kb3 37.Kd3 Kb2 38.Qc3+ Kb1 39.Qa3 Nc2 40.Qb3+ Ka1 41.Kc3 Ne1 42.Qb2#
+- (#34) Depth: 52/85 00:02:15 6352MN

There are some shortcuts later on too, but this one was the earliest I went backward to with keeping mate- score in hash.

Yet 5.Qf6 seems to be a little longer than 5.Bd1 anyhow
Peter.
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pilgrimdan
Posts: 405
Joined: Sat Jul 02, 2011 10:49 pm

Re: Wich Engine can Solve this Puzzle?

Post by pilgrimdan »

peter wrote:
pilgrimdan wrote:looks like the first 2 moves for white are 5.Qf6 and 6.Qf1...

5.Qf6 Kxg3 6.Qf1 c4+ 7.Kd5 Nf3 8.Qe2 Bc5 9.Be4 Nd2 10.Ke5 Nxe4 11.Kxe4 c2 12.Qf3+ Kh2 13.Qf1 e2 14.Qxe2+ Kg3 15.Qxc4 h5 16.Qxc2 h4 17.Qd3+ Kf2 18.Kf4 Bd6+ 19.Qxd6 Ke2 20.Qxa6+ Kd2 21.Qa3 h3 22.Ke4 Kc2 23.Kd4 h2 24.Qa2+ Kd1 25.Kd3 h1=Q 26.Qb1# 1-0
Not the very best moves along your line, Dan, 8...Bc5?! :

8/8/n6p/2bK4/2p5/2p1pnk1/2B1Q3/8 w - - 0 1

Analysis by pedantFishW_2017-04-26_popcnt:

9.Be4 Nh4 10.Qxc4 c2 11.Bxc2 Ng2 12.Ke4 Nc7 13.Qxc5 Ne6 14.Qd6+ Nef4 15.Bd1 Kf2 16.Bf3 e2 17.Qd4+ Kf1 18.Bxg2+ Nxg2 19.Qd3 Ne1 20.Qe3 Nc2 21.Qf4+ Kg1 22.Kf3 e1N+ 23.Kg3 Nd3 24.Qd2 Nce1 25.Qxh6 Kf1 26.Qe3 Ng2 27.Qxd3+ Ke1 28.Qc3+ Ke2 29.Kxg2 Kd1 30.Qb2 Ke1 31.Kf3 Kd1 32.Ke3 Ke1 33.Qa1#
+- (#25) Depth: 49/50 00:00:38 1636MN

But after 8...Nc7 instead:

8/2n5/7p/3K4/1bp5/2p1pnk1/2B1Q3/8 w - - 0 1

Analysis by pedantFishW_2017-04-26_popcnt:

9.Kxc4 Bd6 10.Bd1 Ne5+ 11.Kd4 Kf4 12.Qxe3+ Kf5 13.Bc2+ Ke6 14.Qxh6+ Ke7 15.Qh4+ Ke6 16.Bb3+ Kd7 17.Ba4+ Kc8 18.Qh6 c2 19.Bxc2 Nb5+ 20.Kd5 Kc7 21.Qg7+ Kb6 22.Qg1+ Kc7 23.Ba4 Nc3+ 24.Ke6 Nxa4 25.Qa7+ Kc6 26.Qxa4+ Kc5 27.Qa3+ Kc4 28.Qxd6 Nd3 29.Qd5+ Kc3 30.Kf5 Kc2 31.Qc4+ Kd2 32.Ke4 Nc1 33.Qc7 Nb3 34.Qc6 Na1 35.Qd6+ Kc2 36.Qc5+ Kb3 37.Kd3 Kb2 38.Qc3+ Kb1 39.Qa3 Nc2 40.Qb3+ Ka1 41.Kc3 Ne1 42.Qb2#
+- (#34) Depth: 52/85 00:02:15 6352MN

There are some shortcuts later on too, but this one was the earliest I went backward to with keeping mate- score in hash.

Yet 5.Qf6 seems to be a little longer than 5.Bd1 anyhow
thanks again Peter... good stuff...
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