Can any engine find the winning move here ?

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Spliffjiffer
Posts: 416
Joined: Thu Aug 02, 2012 7:48 pm
Location: Germany

Re: Can any engine find the winning move here ?

Post by Spliffjiffer »

jefk wrote: Tue Apr 13, 2021 10:01 pm Well, the queen sacrifice (move 24) was not a winning move.
White only won because 29....a5? was a mistake.
(cxb3 would lead to a draw).

But before the queen sacrifice the position move 23 Qd5!
would be winning, instead of the sloppy 23.Qxd6?!,

PS yep i used an engine
:)
sometimes one might think that trolling is infectious
24.Qxe5 wins, full point
Wahrheiten sind Illusionen von denen wir aber vergessen haben dass sie welche sind.
Chessqueen
Posts: 5576
Joined: Wed Sep 05, 2018 2:16 am
Location: Moving
Full name: Jorge Picado

Re: Can any engine find the winning move here ?

Post by Chessqueen »

Spliffjiffer wrote: Tue Apr 13, 2021 11:55 pm
jefk wrote: Tue Apr 13, 2021 10:01 pm Well, the queen sacrifice (move 24) was not a winning move.
White only won because 29....a5? was a mistake.
(cxb3 would lead to a draw).

But before the queen sacrifice the position move 23 Qd5!
would be winning, instead of the sloppy 23.Qxd6?!,

PS yep i used an engine
:)
sometimes one might think that trolling is infectious
24.Qxe5 wins, full point
You are correct, because it infected me long long time ago, this could also have been the outcome after 24.Qxe5! according to Stockfish 13 NNUE

[pgn][Event "Computer chess game"]
[Site "MININT-UB2PIMJ"]
[Date "2021.04.13"]
[Round "?"]
[White "Stockfish 13"]
[Black "Stockfish 13"]
[Result "*"]
[BlackElo "3450"]
[Time "16:39:27"]
[WhiteElo "34500"]
[TimeControl "7200"]
[SetUp "1"]
[FEN "4q1kr/p6p/1prQPppB/4n3/4P3/2P5/PP2B2P/R5K1 w - - 1 24"]
[Termination "unterminated"]
[PlyCount "23"]


24. Qxe5 fxe5 25. Rf1 Rc7 26. Bb5 Qd8 27. Bd7 Rc8 28. Rf7 Rc7 29. Rg7+ Kf8
30. e7+ Qxe7 31. Rxh7+ Kg8 32. Rxe7 Rxd7 33. Rxd7 Rxh6 34. Rxa7 Rh4 35. Rb7[/pgn]
Do NOT worry and be happy, we all live a short life :roll:
User avatar
MikeB
Posts: 4889
Joined: Thu Mar 09, 2006 6:34 am
Location: Pen Argyl, Pennsylvania

Re: Can any engine find the winning move here ?

Post by MikeB »

Chessqueen wrote: Tue Apr 13, 2021 8:16 pm This is NOT a troll, it is a position from a game played by in the 40'. Can any engine find the best and only winning move here? I left Stockfish 13 NNUE for 6 hours and is still looking for the best move, probably somebody with a super fast Machine 6 to 8 times faster than my intel i7 4770 3.40 GHz can find it in less than 30 minutes :roll:
[d]4q1kr/p6p/1prQPppB/4n3/4P3/2P5/PP2B2P/R5K1 w - - 61 1
First , your post was not a troll post, it is one of your better posts for sure - you should be commended and I encourage you to post more posts like this and just ignore the naysayers and there is no need to say "This is not a troll yada yada". Your post will speak for itself.

Not sure if this was 1st run was a fluke or not , but it was darn fast
Black-Diamond 13.1 (not yet released)

Code: Select all

 39	+5.45?	9.37G	2:09.21	Qxe5 fxe5?
 39	+5.50!	9.20G	2:06.96	Qxe5!
 39	+5.48?	9.19G	2:06.90	Qxe5 fxe5?
 38	+5.45 	8.67G	2:00.07	Qxe5 fxe5 Rf1 a6 Bd1 Rc4 a4 b5 Bb3 Qe7 Kg2 Qg7 Bxg7 Kxg7 Rf7+ Kh6 Bxc4 bxc4 Kg3 g5 e7 Re8 Rf6+ Kg7 Rxa6 h5 Re6 Kf7 Rxe5 Kf6 Rf5+ Kg6 Rc5 Rxe7 Rc6+ Kf7 Rxc4 Ra7 Rc5 h4+ Kg4 Rxa4 Rxg5 Ra2 Rb5 Kg6 Kxh4 Kg7 Rg5+ Kf8 Kg3 Ra1 Rf5+ Kg7
 38	+5.43!	7.81G	1:48.56	Qxe5!

 37	+5.40 	7.19G	1:40.51	Qxe5 fxe5 Rf1 a6 Bd1 b5 Bb3 Rc4 a4 Qe7 Kg2 Qe8 h3 Qe7 Ba2 Qg7 Bxc4 bxc4 Bxg7 Kxg7 Rf7+ Kh6 e7 Re8 Kg3 g5 Rf6+ Kg7 Rxa6 Kf7 Kg4 Rb8 Kxg5 Rxb2 Kf5 Kxe7 Kxe5 Kd7 Rh6 Rc2 Rxh7+ Kc8 Kd4 Rd2+ Kc5 Rd3 Kxc4 Re3 Kc5 Rf3 Rh5 Rd3 Kb5 Rd6 R
 37	+5.15 	7.05G	1:38.69	Qxe5 fxe5 Rf1 a6 Bd1 b5 Bb3 Rc4 a4 Qe7 Kg2 Qe8 h3 Qe7 Ba2 Qg7 Bxc4 bxc4 Bxg7 Kxg7 Rf7+ Kh6 e7 Re8 Kg3 g5 Rf6+ Kg7 Rxa6 Kf7 Kg4 Rb8 Kxg5 Rxb2 Kf5 Kxe7 Kxe5 Kd7 Rh6 Rc2 Rxh7+ Kc8 Kd4 Rd2+ Kc5 Rd3 Kxc4 Re3 Kc5 Rf3 Rh5 Rd3 Kb5 Rd6 R
 37	+5.14!	6.65G	1:33.43	Qxe5!
 37	+5.06!	5.91G	1:23.47	Qxe5!
 37	+5.00!	5.51G	1:18.08	Qxe5!
 37	+4.96!	5.46G	1:17.38	Qxe5!
 37	+4.93!	5.42G	1:16.91	Qxe5!
 36	+4.90 	5.31G	1:15.33	Qxe5 fxe5 Rf1 Qe7 Bd1 Rc4 Bb3 b5 a4 a6 Kg2 Qg7 Bxc4 bxc4 Bxg7 Kxg7 Rf7+ Kh6 Kg3 Re8 e7 g5 Rf6+ Kg7 Rxa6 Rxe7 Kg4 Rb7 Kxg5 Kf7 h4 Rxb2 Rc6 Ke7 Kh6 Rb8 Kxh7 Ra8 Kg7 Rxa4 h5 Ra2 h6 Rg2+ Rg6 Rf2 h7 Rf7+ Kh6 Rf8 Kg5 Rf3 h8=Q Rg3+ Kf5
 36	+4.17!	4.13G	0:59.26	Qxe5!
 36	+3.19!	2.93G	0:42.49	Qxe5!
 36	+2.42!	2.67G	0:38.75	Qxe5!
 36	+1.81!	2.51G	0:36.46	Qxe5!
 36	+1.33!	2.34G	0:34.05	Qxe5!
 36	+0.96!	2.18G	0:31.80	Qxe5!
 36	+0.68!	2.09G	0:30.46	Qxe5!
 36	+0.47!	2.00G	0:29.20	Qxe5!
 36	+0.31!	1.93G	0:28.24	Qxe5!
 36	+0.19!	1.87G	0:27.37	Qxe5!
 36	+0.11!	1.81G	0:26.65	Qxe5!
 36	+0.05!	1.74G	0:25.63	Qxe5!
 35	  0.00 	1.43G	0:21.07	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 34	  0.00 	429.4M	0:06.57	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 33	  0.00 	299.0M	0:04.52	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 32	  0.00 	236.3M	0:03.55	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 31	  0.00 	191.1M	0:02.84	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 30	  0.00 	156.2M	0:02.31	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 29	  0.00 	125.8M	0:01.84	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 28	  0.00 	95.5M  	0:01.40	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 27	  0.00 	70.0M  	0:01.01	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 26	  0.00 	62.0M  	0:00.89	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 25	  0.00 	56.5M  	0:00.81	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8

 24	  0.00 	27.7M  	0:00.39	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 23	  0.00 	22.5M  	0:00.31	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 22	  0.00 	14.3M  	0:00.19	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 21	  0.00 	12.5M  	0:00.16	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 20	  0.00 	8.80M  	0:00.11	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 19	  0.00 	5.88M  	0:00.07	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 18	  0.00 	4.96M  	0:00.06	Qa3 Rxe6 Qxa7 Qf7 Qa6 Qe7 Qc8+ Qe8 Qc7 Qf7 Qd8+ Qe8
 17	  0.00 	4.39M  	0:00.05	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 16	  0.00 	4.06M  	0:00.05	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 15	  0.00 	2.11M  	0:00.02	Qa3 Rxe6 Qxa7 Qf7 Qa6 Qe7 Qa8+ Qe8
 14	  0.00 	1.69M  	0:00.02	Qa3 Rxe6 Qxa7 Qf7 Qa6 Qe7 Qa8+ Qe8
 13	  0.00 	1.40M  	0:00.02	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 12	  0.00 	1.21M  	0:00.01	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 11	+0.08 	1.04M  	0:00.01	Qa3 Rxe6 Qxa7 Qf7 Qb8+ Qe8
 10	+0.07 	712694	0:00.01	Qa3 Rxe6 Qxa7 Qe7 Qxe7 Rxe7 Bd1 Kf7 Bb3+ Ke8 Rf1 Nf7
  9	 -0.01 	556594	0:00.01	Qa3 Rxe6 Qxa7 Nf7 Bc4 Rxe4 Bxf7+ Qxf7 Qxb6 Qe7
  8	+0.05 	384507	0:00.00	Qd5 Rxe6 Bb5 Qc8 Kh1 Kf7 Rd1 a6
  7	 -0.03 	277342	0:00.00	Qd5 Rxe6 Kh1 Qc6 Bb5 Qxd5 exd5
  6	+0.96 	139804	0:00.00	Qd5 Rxe6 Rf1 Qe7 Bc4 Nxc4 Qxc4
  5	+0.64 	106654	0:00.00	Qd5 Qe7 Rd1 Rc8 a4
  4	+0.46 	60780  	0:00.00	Qd5 Qe7 Rd1 Rc8
  3	+0.54 	40252  	0:00.00	Qd5 Rc5 Qb7
  2	+0.40 	32812  	0:00.00	Qd5 Rc5
  1	+0.31 	23553  	0:00.00	Qd5
  0	#
running it again
2nd run -

Code: Select all

 38	+4.96 	13.2G	3:10.81	Qxe5 fxe5 Rf1 Qe7 Bd1 b5 Bb3 Rc4 a4 a6 a5 Qg7 Bxc4 bxc4 Bxg7 Kxg7 Rf7+ Kh6 Ra7 Kg5 Rxa6 Kf6 Rb6 Rd8 a6 Rd1+ Kf2 Ra1 Kg3 Ke7 Kh4 h6 h3 Ra2 Kg3 Ra4 h4 Ra1 Kg4 Rg1+ Kf3 Rf1+ Ke3 Ra1 Ke2 Ra2 Kf3 Ra5 Kg4 Ra1 h5 Rg1+ Kf3 gxh5 Rb7+ Kxe
 38	+4.91!	13.1G	3:09.72	Qxe5!
 38	+4.82?	13.1G	3:09.69	Qxe5 fxe5?
 38	+4.94!	12.9G	3:06.83	Qxe5!
 38	+4.90!	12.4G	3:00.30	Qxe5!
 38	+4.87!	12.1G	2:56.08	Qxe5!
 37	+4.54 	11.7G	2:50.61	Qxe5 fxe5 Rf1 Qe7 Bd1 Rc4 Bb3 b5 a4 a6 a5 Qg7 Bxg7 Kxg7 Rf7+ Kh6 Bxc4 bxc4 Ra7 Kg5 Rxa6 Kf6 Rb6 Rd8 a6 Rd1+ Kf2 Ra1 Kg3 h6 h4 Ke7 Kf2 Rh1 Rb8 Ra1 Ra8 Ra2 a7 Rxb2+ Ke1 Rb1+ Kd2 Ra1 Rh8 Kxe6 a8=Q Rxa8 Rxa8 Kf7 Ra6 Kg7 Ke3 Kh7 Kf3 
 37	+4.48!	11.1G	2:43.43	Qxe5!
 37	+4.39!	10.9G	2:39.82	Qxe5!
 37	+4.34!	10.7G	2:37.01	Qxe5!
 37	+4.30!	10.4G	2:33.43	Qxe5!
 37	+4.27!	10.4G	2:33.03	Qxe5!
 36	+4.19 	10.1G	2:29.82	Qxe5 fxe5 Rf1 Qe7 Bd1 Rc4 Bb3 b5 a4 a6 a5 Qg7 Bxg7 Kxg7 Bxc4 bxc4 Rf7+ Kh6 Ra7 Kg5 Rxa6 Kf6 Rb6 Rd8 h3 Rd1+ Kf2 Rd2+ Ke1 Rd3 a6 Rxh3 Kf2 Rh1 Rb8 Ra1 Ra8 Kxe6 a7 Kf6 Rf8+ Kg5 a8=Q Rxa8 Rxa8 Kf4 Rc8 Kxe4 Rxc4+ Kd3 Rc6 g5 Rd6+ Kc4 
 36	+4.15!	9.94G	2:27.03	Qxe5!
 36	+4.07!	9.93G	2:26.84	Qxe5!
 36	+4.04?	9.91G	2:26.59	Qxe5 fxe5?
 36	+4.08?	9.90G	2:26.43	Qxe5 fxe5?
 36	+4.10?	9.87G	2:26.04	Qxe5 fxe5?
 35	+4.13 	9.51G	2:21.05	Qxe5 fxe5 Rf1 a6 Bd1 b5 Bb3 Rc4 h3 Qe7 a4 Qg7 Bxg7 Kxg7 Rf7+ Kh6 Bxc4 bxc4 Ra7 Re8 Rxa6 Kg5 Rc6 Kf4 a5 Kxe4 Rxc4+ Kd5 Ra4 Kxe6 a6 Ra8 Kf2 Kd7 a7 Kc7 Ke3 Kb7 Ke4 h6 Kxe5 Re8+ Kf6 Ka8 Kxg6 Re6+ Kh5 Rb6 h4 Re6 b4 Re4 Ra3 Rc4 b5 Rc6
 35	+3.88!	9.22G	2:17.09	Qxe5!
 35	+3.43!	9.15G	2:16.12	Qxe5!
 35	+3.35!	9.10G	2:15.38	Qxe5!
 35	+3.29!	9.03G	2:14.50	Qxe5!
 35	+3.25!	8.99G	2:13.93	Qxe5!
 35	+3.22!	8.97G	2:13.54	Qxe5!
 34	+3.20 	8.84G	2:11.77	Qxe5 fxe5 Rf1 Rc8 Bd1 Qxe6 Bb3 Qxb3 axb3 Rb8 Rf2 a6 b4 a5 bxa5 bxa5 c4 Rd8 Kg2 Rc8 Kg3 Re8 Rf1 a4 Kg4 Rb8 Rf2 Rc8 h4 Re8 Kg5 Rc8 c5 Re8 Kf6 Ra8 c6 Re8 c7
 34	+2.49!	8.56G	2:08.03	Qxe5!
 34	+1.89!	8.55G	2:07.95	Qxe5!
 34	+1.41!	8.33G	2:04.74	Qxe5!
 34	+1.00!	8.33G	2:04.74	Qxe5!
 34	+0.71!	8.33G	2:04.72	Qxe5!
 34	+0.49!	8.33G	2:04.70	Qxe5!
 34	+0.33!	8.32G	2:04.68	Qxe5!
 34	+0.19!	8.32G	2:04.67	Qxe5!
 34	+0.11!	8.32G	2:04.65	Qxe5!
 34	+0.05!	8.31G	2:04.44	Qxe5!
 33	  0.00 	705.7M	0:11.14	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 32	  0.00 	664.0M	0:10.49	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 31	  0.00 	307.7M	0:04.61	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 30	  0.00 	238.7M	0:03.53	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 29	  0.00 	114.1M	0:01.64	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 28	  0.00 	71.9M  	0:01.01	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 27	  0.00 	54.5M  	0:00.76	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 26	  0.00 	47.5M  	0:00.66	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 25	  0.00 	37.1M  	0:00.52	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 24	  0.00 	28.4M  	0:00.39	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 23	  0.00 	17.3M  	0:00.23	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 22	  0.00 	13.7M  	0:00.18	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 21	  0.00 	10.1M  	0:00.13	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 20	  0.00 	7.25M  	0:00.09	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 19	  0.00 	4.56M  	0:00.06	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 18	  0.00 	3.52M  	0:00.04	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 17	  0.00 	2.72M  	0:00.03	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 16	  0.00 	2.17M  	0:00.03	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 15	  0.00 	1.78M  	0:00.02	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 14	  0.00 	1.53M  	0:00.02	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 13	  0.00 	1.23M  	0:00.02	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 12	  0.00 	989723	0:00.01	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 11	  0.00 	894189	0:00.01	Qa3 Rxe6 Qxa7 Qf7 Qb8+ Qe8
 10	  0.00 	697027	0:00.01	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
  9	  0.00 	462466	0:00.01	Qa3 Rxe6 Qxa7 Nf7 Bc4 Rxe4 Qc7 Re7 Qf4 Re4
  8	 -0.09 	346585	0:00.01	Qd5 Rxe6 Bd1 Nf7 Bb3 Nxh6 Qxe6+ Kg7 Bd5
  7	 -0.31 	240188	0:00.00	Qd5 Rxe6 Bb5 Qc8 Kh1 Kf7 Rc1
  6	 -0.28 	189741	0:00.00	Qd5 Rxe6 Bb5 Qc8 Ba6 Qc5+ Kh1 Qxd5
  5	+0.73 	82173  	0:00.00	Qd5 Qe7 Rd1 Rc8 a4
  4	+0.49 	57890  	0:00.00	Qd5 Qe7 a4 g5
  3	+0.36 	44184  	0:00.00	Qd5 Qe7 a4
  2	+0.27 	34290  	0:00.00	Qd5 Rxe6
  1	+0.27 	25970  	0:00.00	Qd5
  0	#
3rd Run:
Not solved in 5 minutes

4th and best Run :

Code: Select all

40	+5.64 	10.1G	2:14.41	Qxe5 fxe5 Rf1 Qe7 Bd1 b5 Bb3 Rc4 a4 a6 Kg2 Qg7 Bxg7 Kxg7 Rf7+ Kh6 Bxc4 bxc4 e7 Re8 Kg3 g5 Rf6+ Kg7 Rxa6 Kf7 Rh6 Kg7 Re6 Kf7 Rxe5 Kf6 Rf5+ Kg6 Rc5 Rxe7 Rc6+ Kh5 Rxc4 Ra7 b3 Ra8 Rc5 Rd8 Rd5 Re8 Rd4 Ra8 Rd3 Re8 a5 Rxe4 a6 Rg4+ Kf3 
 39	+5.57 	9.66G	2:08.98	Qxe5 fxe5 Rf1 Qe7 Bd1 b5 Bb3 Rc4 a4 a6 Kg2 Qg7 Bxg7 Kxg7 Rf7+ Kh6 Bxc4 bxc4 e7 Re8 Kg3 g5 Rf6+ Kg7 Rxa6 h5 Re6 Kf7 Rxe5 Kf6 Rf5+ Kg6 Rc5 Rxe7 Rc6+ Kg7 Rxc4 Rd7 Rd4 Rf7 a5 Rf1 a6 Rg1+ Kh3 Ra1 Rd6 Re1 a7 Ra1 Rd7+ Kf6 Kg3 Ke6 Rh7 K
 39	+5.55!	8.70G	1:56.60	Qxe5!
 39	+5.53!	7.80G	1:44.93	Qxe5!
 38	+5.53?	7.76G	1:44.43	Qxe5 fxe5?
 37	+5.53 	7.69G	1:43.58	Qxe5 fxe5 Rf1 Qe7 Bd1 Rc4 Bb3 b5 a4 a6 Kg2 Qg7 Bxg7 Kxg7 Rf7+ Kh6 Bxc4 bxc4 e7 Re8 Kg3 g5 Rf6+ Kg7 Rxa6 h5 Re6 Kf7 Rxe5 Kf6 Rf5+ Kg6 Rc5 Rxe7 Rc6+ Kh7 Rxc4 Rd7 Rd4 Rf7 a5 Rf1 a6 Rg1+ Kf2 Ra1 Rd7+ Kh6 a7 g4 e5 Rxa7 Rxa7 h4 e6 Kg6
 37	+5.50!	7.43G	1:40.21	Qxe5!
 37	+5.46?	7.40G	1:39.74	Qxe5 fxe5?
 37	+5.52!	7.39G	1:39.63	Qxe5!
 36	+5.49 	6.44G	1:27.42	Qxe5 fxe5 Rf1 Qd8 Bd1 Qxd1 Rxd1 Rxe6 Rd8+ Kf7 Rxh8 g5 Bxg5 Kg6 Be3 Rd6 Kf2 Rd1 Rg8+ Kf6 Rg1 Rd6 Ke2 Re6 Rg8 Rc6 Rb8 Rc7 Re8 Rg7 Kf3 Rd7 h4 Rd1 Bg5+ Kg6 Re6+ Kf7 Rxe5 Kf8 Be3 Rf1+ Kg3 Re1 Rf5+ Ke8 Kf3 Rf1+ Bf2 Ra1 a3 Rb1 Rb5
 36	+5.04!	6.32G	1:25.82	Qxe5!
 36	+4.96!	4.41G	1:01.14	Qxe5!
 36	+4.90!	4.37G	1:00.52	Qxe5!
 36	+4.86!	4.37G	1:00.51	Qxe5!
 36	+4.82!	4.36G	1:00.46	Qxe5!
 35	+5.07!	4.12G	0:57.23	Qxe5!
 35	+4.79!	3.59G	0:50.30	Qxe5!
 35	+4.34!	3.32G	0:46.64	Qxe5!
 35	+4.26!	3.23G	0:45.48	Qxe5!
 35	+4.20!	3.15G	0:44.43	Qxe5!
 35	+4.16!	2.93G	0:41.58	Qxe5!
 35	+4.14!	2.87G	0:40.67	Qxe5!
 34	+4.09 	2.83G	0:40.13	Qxe5 fxe5 Rf1 Rc8 Bd1 Qxe6 Bb3 Qxb3 axb3 a5 Kh1 Rd8 Kg2 Re8 c4 Rb8 Kh3 Ra8 Kh4 Rb8 Kg4 Ra8 Kg5 Rb8 h3 Rc8 Kf6 Rf8+ Bxf8 Kxf8 b4 a4 Ra1 b5 cxb5 Ke8 Rxa4 Kd7 Kxe5 Kc7 Ra6 Rf8 Kd5 Rd8+ Kc5 Re8 Rc6+ Kb7 Kd5 g5 e5
 34	+4.10!	2.68G	0:38.15	Qxe5!
 33	+4.07 	2.67G	0:38.05	Qxe5 fxe5 Rf1 a6 Bd1 b5 a4 Rc7 Bb3 Rc4 Kg2 Qe7 h4 Qg7 Bxg7 Kxg7 Bxc4 bxc4 Rf7+ Kh6 e7 Re8 Kf3 g5 hxg5+ Kxg5 Rf5+ Kg6 Rxe5 Kf7 Rh5 Kg7 Rc5 Rxe7 Rxc4 Rf7+ Kg3 h5 b4 Kh6 Rc6+ Kg5 Rc5+ Kh6 a5 Rg7+ Kh2 Rg6 c4 Rg4 b5 Rxe4 Kg3 Kg6 Kf3 
 33	+3.66!	2.41G	0:34.47	Qxe5!
 33	+2.88!	1.84G	0:26.59	Qxe5!
 33	+2.27!	1.54G	0:22.43	Qxe5!
 33	+1.80!	1.15G	0:16.97	Qxe5!
 33	+1.43!	1.14G	0:16.84	Qxe5!
 33	+1.15!	1.01G	0:15.05	Qxe5!
 33	+0.93!	1.01G	0:15.05	Qxe5!
 33	+0.77!	1.01G	0:15.05	Qxe5!
 33	+0.62!	1.01G	0:15.05	Qxe5!
 33	+0.54!	1.01G	0:15.05	Qxe5!
 33	+0.46!	1.01G	0:15.05	Qxe5!
 32	  0.00 	314.3M	0:04.80	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 31	  0.00 	177.0M	0:02.66	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 30	  0.00 	150.3M	0:02.24	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 29	  0.00 	116.8M	0:01.72	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 28	  0.00 	92.0M  	0:01.35	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 27	  0.00 	68.6M  	0:01.00	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 26	  0.00 	52.6M  	0:00.77	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 25	  0.00 	37.8M  	0:00.54	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 24	  0.00 	26.9M  	0:00.38	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 23	  0.00 	19.9M  	0:00.28	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 22	  0.00 	14.4M  	0:00.20	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 21	  0.00 	10.7M  	0:00.14	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 20	  0.00 	7.76M  	0:00.10	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 19	  0.00 	5.77M  	0:00.07	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 18	  0.00 	4.94M  	0:00.06	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 17	  0.00 	3.90M  	0:00.05	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 16	  0.00 	2.87M  	0:00.04	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 15	  0.00 	2.29M  	0:00.03	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 14	  0.00 	1.89M  	0:00.02	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 13	  0.00 	1.57M  	0:00.02	Qa3 Rxe6 Qxa7 Qf7 Qa6 Qe7 Qa8+ Qe8
 12	+0.02 	1.52M  	0:00.02	Qa3 Rxe6 Qxa7 Qf7 Qb8+ Qe8
 11	+0.04 	1.12M  	0:00.01	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8 Qd5 Kf7 Bd1 Qe7 Bb3 Rd8 Qxe6+ Qxe6 Bxe6+ Kxe6 Bf4 g5
 10	 -0.27 	771330	0:00.01	Qd5 Rxe6 Bd1 Kf7 Bb3 Qd7 Qxd7+ Nxd7 Be3 Ke7 Bxe6 Kxe6 Kf2 Rd8 Ke2
  9	 -0.16 	530192	0:00.01	Qd5 Rxe6 Bd1 Kf7 Bb3 Qd7 Qxd7+ Nxd7 Be3 Ne5 Bxe6+ Kxe6
  8	 -0.07 	383279	0:00.01	Qd5 Rxe6 Bd1 Qd7 Qa8+ Re8 Bb3+ Nf7 Qd5 Qxd5
  7	  0.00 	212502	0:00.00	Qd5 Rxe6 a4 Qe7 Qa8+ Qe8
  6	+0.03 	199489	0:00.00	Qd5 Rxe6 a4 Qe7 Qa8+ Qe8
  5	+0.22 	167341	0:00.00	Qd5 Rxe6 a4 g5 Rd1
  4	+0.29 	105768	0:00.00	Qd5 Rxe6 Rf1 Kf7
  3	+0.24 	89457  	0:00.00	Qd5 Rxe6 a4
  2	+0.27 	76525  	0:00.00	Qd5 Rxe6
  1	+0.27 	45633  	0:00.00	Qd5
  0	#
Image
Dann Corbit
Posts: 12537
Joined: Wed Mar 08, 2006 8:57 pm
Location: Redmond, WA USA

Re: Can any engine find the winning move here ?

Post by Dann Corbit »

I agree with Mike.
We do not have to agree with a poster.
And provocative posts can be interesting.
Some posts can be annoying.
But a post should never be censored for being annoying, not matter how annoying.
That is a sign that it is causing us to think.

Sure, there are purely vacuous posts. But aren't most of us guilty of those at some point in time?
I know I have also posted stupid, irritating posts.

As a moderator, I have even censured my own posts.
So why not allow the alternative views, and even consider them carefully.
If not, what is it that we are afraid of?
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.
User avatar
MikeB
Posts: 4889
Joined: Thu Mar 09, 2006 6:34 am
Location: Pen Argyl, Pennsylvania

Re: Can any engine find the winning move here ?

Post by MikeB »

this is with another new net ( so was the last one. first run a was tad faster than previous best

Code: Select all

 39	+5.19 	9.72G	2:15.39	Qxe5 fxe5 Rf1 Qe7 Bd1 Rc4 Bb3 b5 a4 a6 Kg2 Qg7 Bxg7 Kxg7 Bxc4 bxc4 Rf7+ Kh6 Kg3 g5 e7 Re8 Rf6+ Kg7 Rxa6 h5 Re6 Kf7 Rxe5 Kf6 Rf5+ Kg6 Rc5 Rxe7 Rc6+ Kf7 Rxc4 Rd7 Rd4 Ra7 Rd5 h4+ Kf3 Rxa4 Rxg5 Ra2 Rb5 Ra4 Rf5+ Ke7 Rh5 Ra1 Rxh4 Rh1 
 39	+5.15!	9.19G	2:08.29	Qxe5!
 39	+5.09!	9.08G	2:06.82	Qxe5!
 39	+5.05!	9.00G	2:05.75	Qxe5!
 39	+5.02!	8.85G	2:03.68	Qxe5!
 38	+4.99 	8.82G	2:03.31	Qxe5 fxe5 Rf1 Qe7 Bd1 Rc4 Bb3 b5 a4 a6 Kg2 Qg7 Bxg7 Kxg7 Rf7+ Kh6 Bxc4 bxc4 Kg3 Re8 e7 g5 Rf6+ Kg7 Rxa6 Kf7 Rh6 Kxe7 Rxh7+ Kf6 Kg4 Ra8 Rh6+ Kf7 Kxg5 Rxa4 Kf5 Kg7 Rb6 Ra1 Kxe5 Rf1 Rb7+ Kg6 h4 Kh5 Rh7+ Kg6 Rc7 Rh1 Rc5 Rh2 h5+ Kh6 
 38	+5.11!	8.59G	2:00.21	Qxe5!
 38	+4.97!	8.58G	2:00.05	Qxe5!
 38	+4.88?	8.55G	1:59.69	Qxe5 fxe5?
 38	+4.92?	8.13G	1:54.02	Qxe5 fxe5?
 38	+5.09!	7.97G	1:51.83	Qxe5!
 38	+5.05!	7.25G	1:42.19	Qxe5!
 38	+5.02!	7.21G	1:41.70	Qxe5!
 37	+4.99 	7.16G	1:40.90	Qxe5 fxe5 Rf1 Qe7 Bd1 Rc4 Bb3 b5 a4 a6 Kg2 Qg7 Bxg7 Kxg7 Rf7+ Kh6 Bxc4 bxc4 e7 Re8 Kg3 g5 Rf6+ Kg7 Rxa6 Rxe7 Kg4 Rb7 Kxg5 Rxb2 Ra7+ Kg8 h4 Rc2 Kf6 h5 Rg7+ Kh8 Rg3 Kh7 Kxe5 Rh2 Kd5 Rxh4 e5 Rg4 Rh3 Kg6 e6 h4 Kd6 Kf6 Rf3+ Kg5 e7 Re
 37	+5.03!	7.08G	1:39.93	Qxe5!
 37	+4.50!	7.07G	1:39.75	Qxe5!
 37	+4.42!	7.07G	1:39.72	Qxe5!
 37	+4.29!	6.26G	1:28.73	Qxe5!
 37	+4.25!	5.09G	1:12.54	Qxe5!
 37	+4.22!	4.97G	1:10.79	Qxe5!
 36	+4.19 	4.77G	1:08.07	Qxe5 fxe5 Rf1 Qe7 Bd1 Rc4 Bb3 b5 a4 a6 Kg2 Qg7 Bxg7 Kxg7 Bxc4 bxc4 Rf7+ Kh6 e7 Re8 Kg3 g5 Rf6+ Kg7 Rxa6 Rxe7 Kg4 Rb7 Kxg5 Rxb2 Ra7+ Kg8 h4 Rc2 Kf6 h5 Rg7+ Kh8 Rg3 Kh7 a5 Rh2 Rg5 Kh6 Rg8 Kh7 Rc8 Rxh4 a6 Rh2 a7 Ra2 a8=Q Rxa8 Rxa8 
 36	+4.17!	3.28G	0:47.05	Qxe5!
 36	+3.19!	2.29G	0:32.98	Qxe5!
 36	+2.42!	2.04G	0:29.38	Qxe5!
 36	+1.81!	1.49G	0:21.67	Qxe5!
 36	+1.33!	1.32G	0:19.37	Qxe5!
 36	+0.96!	1.24G	0:18.15	Qxe5!
 36	+0.68!	1.17G	0:17.11	Qxe5!
 36	+0.47!	1.09G	0:16.06	Qxe5!
 36	+0.31!	1.03G	0:15.22	Qxe5!
 36	+0.19!	1.01G	0:14.81	Qxe5!
 36	+0.11!	955.8M	0:14.13	Qxe5!
 36	+0.05!	920.3M	0:13.64	Qxe5!
 35	  0.00 	564.9M	0:08.41	Qa3 Rxe6 Qxa7 Qf7 Qa6 Qe7 Qa8+ Qe8
 34	  0.00 	396.9M	0:05.69	Qa3 Rxe6 Qxa7 Qf7 Qa6 Qe7 Qa8+ Qe8
 33	  0.00 	327.3M	0:04.63	Qa3 Rxe6 Qxa7 Qf7 Qa6 Qe7 Qa8+ Qe8
 32	  0.00 	254.2M	0:03.58	Qa3 Rxe6 Qxa7 Qf7 Qa6 Qe7 Qa8+ Qe8
 31	  0.00 	183.8M	0:02.60	Qa3 Rxe6 Qxa7 Qf7 Qa6 Qe7 Qa8+ Qe8
 30	  0.00 	143.6M	0:02.01	Qa3 Rxe6 Qxa7 Qf7 Qa6 Qe7 Qa8+ Qe8
 29	  0.00 	127.0M	0:01.77	Qa3 Rxe6 Qxa7 Qf7 Qa6 Qe7 Qa8+ Qe8
 28	  0.00 	96.9M  	0:01.34	Qa3 Rxe6 Qxa7 Qf7 Qa6 Qe7 Qa8+ Qe8
 27	  0.00 	75.6M  	0:01.05	Qa3 Rxe6 Qxa7 Qf7 Qa6 Qe7 Qa8+ Qe8
 26	  0.00 	61.9M  	0:00.86	Qa3 Rxe6 Qxa7 Qf7 Qa6 Qe7 Qa8+ Qe8
 25	  0.00 	56.5M  	0:00.78	Qa3 Rxe6 Qxa7 Qf7 Qa6 Qe7 Qa8+ Qe8
 24	  0.00 	56.0M  	0:00.77	Qa3 Rxe6 Qxa7 Qf7 Qa6 Qe7 Qa8+ Qe8
 23	  0.00 	55.5M  	0:00.77	Qa3 Rxe6 Qxa7 Qf7 Qa6 Qe7 Qa8+ Qe8
 22	  0.00 	31.1M  	0:00.42	Qd4 Rxe6 Rf1 Kf7 Bd1 Qb5 Bb3 Rc8 Bg5 Rc4 Qd8 Ng4 Qh8 Qxg5 Qxh7+ Ke8 Qg8+ Ke7 Qg7+ Kd8 Rd1+ Kc8 Qf8+ Kb7 Rd7+ Rc7 Bd5+ Rc6 Bxc6+ Kxc6 Qd6+ Kb5 Qd3+ Kc6
 21	  0.00 	30.3M  	0:00.41	Qd4 Rxe6 Rf1 Kf7 Bd1 Qb5 Bb3 Rc8 Bg5 Rc4 Qd8 Ng4 Qh8 Qxg5 Qxh7+ Ke8 Qg8+ Ke7 Qg7+ Ke8
 20	  0.00 	17.1M  	0:00.22	Qd4 Rxe6 Rf1 Kf7 Bd1 Qb5 Bb3 Rc8 Bg5 Rc4 Qd8 Ng4 Bxc4 Qxc4 Qd7+ Kg8 Qd8+
 19	  0.00 	6.50M  	0:00.08	Qa3 Rxe6 Qxa7 Qf7 Qa6 Qe7 Qa8+ Qe8
 18	  0.00 	5.11M  	0:00.06	Qa3 Rxe6 Qxa7 Qf7 Qa6 Qe7 Qa8+ Qe8
 17	  0.00 	3.66M  	0:00.04	Qa3 Rxe6 Qxa7 Qf7 Qa6 Qe7 Qa8+ Qe8
 16	  0.00 	3.01M  	0:00.04	Qa3 Rxe6 Qxa7 Qf7 Qa6 Qe7 Qa8+ Qe8
 15	  0.00 	2.22M  	0:00.03	Qa3 Rxe6 Qxa7 Qf7 Qa8+ Qe8
 14	  0.00 	1.74M  	0:00.02	Qa3 Rxe6 Qxa7 Qf7 Qa8+ Qe8
 13	  0.00 	1.45M  	0:00.02	Qa3 Rxe6 Qxa7 Qf7 Qa8+ Qe8
 12	  0.00 	1.30M  	0:00.01	Qa3 Rxe6 Qxa7 Qf7 Qa8+ Qe8
 11	  0.00 	1.18M  	0:00.01	Qa3 Rxe6 Qxa7 Qf7 Qa4 Qe7 Qa8+ Qe8
 10	 -0.31 	663620	0:00.01	Qd5 Rxe6 Bd1 Qd7 Qxd7 Nxd7 Bb3 Kf7 Be3 Ne5 Bxe6+ Kxe6
  9	 -0.36 	589913	0:00.01	Qd5 Rxe6 Bd1 Kf7 Bb3 Qe7 Rd1 Qc5+ Qxc5 bxc5 Bxe6+ Kxe6
  8	 -0.28 	442760	0:00.01	Qd5 Rxe6 Bd1 Qc8 Bb3 Kf7 Rf1 Qc5+ Kh1
  7	 -0.20 	310468	0:00.00	Qd5 Rxe6 Bb5 Qc8 Kh1 Kf7 Re1
  6	 -0.16 	189228	0:00.00	Qd5 Rxe6 Rc1 Kf7 Bc4 Qe7
  5	+0.93 	81850  	0:00.00	Qd5 Qe7 Rd1 Rc8 a4
  4	+0.63 	68858  	0:00.00	Qd5 Qe7 Rd1 Rc8
  3	+0.35 	44923  	0:00.00	Qd5 Qe7 Rd1
  2	+0.28 	34645  	0:00.00	Qd5 Qe7
  1	+0.22 	20031  	0:00.00	Qd5
  0	#

#2 Run
	mover viewpoint		fewer / Multi-PV setting = 1 / more
exclude: none best +tail                                          
dep	score	nodes	time	(not shown:  tbhits	knps	seldep)
 35	+5.13 	8.19G	1:56.38	Qxe5 fxe5 Rf1 Qe7 Bd1 Rc4 Bb3 b5 a4 a6 Kg2 Qg7 Bxg7 Kxg7 Bxc4 bxc4 Rf7+ Kh6 e7 Re8 Kg3 g5 Rf6+ Kg7 Rxa6 Rxe7 Kg4 Rb7 Kxg5 Rxb2 Ra7+ Kg8 h4 Rc2 Kf6 h5 Rg7+ Kh8 Rg3 Kh7 Kxe5 Rh2 Kd5 Rxh4 e5 Rg4 Rh3 Rg5 Kd6 Kg7 e6 Kf8 Rh4 Rg3 Kd7 R
 35	+5.05!	7.87G	1:52.26	Qxe5!
 35	+4.96?	7.86G	1:52.09	Qxe5 fxe5?
 35	+5.08!	7.78G	1:51.07	Qxe5!
 35	+5.04!	7.56G	1:48.05	Qxe5!
 35	+4.99?	7.55G	1:47.92	Qxe5 fxe5?
 34	+4.97 	7.54G	1:47.83	Qxe5 fxe5 Rf1 Qe7 Bd1 Rc4 Bb3 b5 a4 a6 Kg2 Qg7 Bxg7 Kxg7 Rf7+ Kh6 Bxc4 bxc4 e7 Re8 Kg3 g5 Rf6+ Kg7 Rxa6 Rxe7 Kg4 Rb7 Kxg5 Rxb2 Ra7+ Kg8 h4 Rc2 Kf6 h5 Rg7+ Kh8 Rg3 Kh7 Kxe5 Rh2 Kd5 Rxh4 e5 Rg4 Rh3 Rg5 Kd6 Kh6 e6 Rg2 Re3 Rd2+ Kc6 
 34	+4.69?	7.42G	1:46.31	Qxe5 fxe5?
 34	+4.77?	7.39G	1:45.90	Qxe5 fxe5?
 34	+4.83?	7.36G	1:45.48	Qxe5 fxe5?
 34	+4.87?	7.35G	1:45.34	Qxe5 fxe5?
 34	+4.93!	7.16G	1:42.84	Qxe5!
 33	+4.90 	7.07G	1:41.60	Qxe5 fxe5 Rf1 Rc8 Bd1 Qxe6 Bb3 Qxb3 axb3 a5 Kg2 Rd8 Kg3 Ra8 c4 Rc8 Kh4 Ra8 Kg4 Rd8 Kg5 Rc8 Kf6 Rf8+ Bxf8 Kxf8 b4 h5 c5 Rh7 Kxe5+ Ke8 cxb6 axb4 Kd5 Rb7 Rf6 g5 Rh6 g4 Kc6 Rxb6+ Kxb6 b3 Rxh5 Ke7 Rh6 g3 hxg3 Kd7
 33	+4.78?	6.94G	1:39.85	Qxe5 fxe5?
 33	+4.87?	6.94G	1:39.85	Qxe5 fxe5?
 32	+4.85 	6.88G	1:39.07	Qxe5 fxe5 Rf1 Qe7 Bd1 Rc4 Bb3 b5 a4 a6 Kg2 Qg7 Bxc4 bxc4 Bxg7 Kxg7 Rf7+ Kh6 e7 Re8 Kg3 g5 Rf6+ Kg7 Rxa6 Rxe7 Kg4 Rb7 Kxg5 Rxb2 Ra7+ Kg8 h4 h6+ Kf6 Rh2 Rg7+ Kf8 Rb7 Ke8 Kxe5 Rxh4 Kd4 Kd8 a5 Kc8 a6 h5 Kd5 Rh2 Rh7 Kb8 e5 Re2
 32	+4.77!	6.64G	1:35.79	Qxe5!
 32	+4.70?	6.62G	1:35.52	Qxe5 fxe5?
 32	+4.75?	6.61G	1:35.46	Qxe5 fxe5?
 32	+4.78?	6.61G	1:35.45	Qxe5 fxe5?
 31	+4.77 	6.54G	1:34.49	Qxe5 fxe5 Rf1 Qe7 Bd1 b5 Bb3 Rc4 a4 a6 Kg2 Qg7 Bxc4 bxc4 Bxg7 Kxg7 Rf7+ Kh6 e7 Re8 Kg3 g5 Rf6+ Kg7 Rxa6 Rxe7 Kg4 Rb7 Kxg5 h5 h4 Kf7 Kf5 Rxb2 Ra7+ Kg8 Rc7 Rh2 Kg5 Kf8 a5 Ra2 Kf6 Ke8 Rc5 Ra3 Kxe5 Rxc3 Kd4 Rh3
 31	+4.74!	6.44G	1:33.17	Qxe5!
 31	+4.71?	6.44G	1:33.17	Qxe5 fxe5?
 30	+4.73 	6.44G	1:33.12	Qxe5 fxe5 Rf1 Qe7 Bd1 b5 Bb3 Rc4 a4 a6 Kg2 Qg7 Bxg7 Kxg7 Rf7+ Kh6 Bxc4 bxc4 Kg3 Re8 e7 g5 Rf6+ Kg7 Rxa6 Rxe7 Kg4 Rb7 Kxg5 Kf7 Kf5 Rxb2 Ra7+ Kg8 h4 Rc2 Kf6 h6 Rg7+ Kh8 Rg3 Rh2 Kxe5 Rxh4 Kd5 Kh7 e5 Rh1 e6 Re1 a5 Ra1
 29	+4.73 	6.43G	1:33.01	Qxe5 fxe5 Rf1 Qe7 Bd1 b5 Bb3 Rc4 a4 a6 Kg2 Qg7 Bxg7 Kxg7 Rf7+ Kh6 Bxc4 bxc4 Kg3 Re8 e7 g5 Rf6+ Kg7 Rxa6 Rxe7 Kg4 Rb7 Kxg5 Kf7 Kf5 Rxb2 Ra7+ Kg8 h4 Rc2 Kf6 h5 Rg7+ Kh8 Rg3 Kh7 Kxe5 Kh6 a5 Rh2 a6 Ra2 Kd4 Rxa6 e5 Ra2 e6 Rd2+ Kxc4
 29	+4.64!	6.43G	1:32.94	Qxe5!
 29	+4.43!	6.43G	1:32.94	Qxe5!
 29	+4.12!	6.43G	1:32.94	Qxe5!
 29	+3.70!	6.43G	1:32.93	Qxe5!
 29	+3.18!	6.43G	1:32.93	Qxe5!
 29	+0.24!	6.43G	1:32.93	Qxe5!
 28	  0.00 	1.32G	0:21.29	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 27	  0.00 	939.1M	0:15.36	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 26	  0.00 	632.3M	0:10.20	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 25	  0.00 	257.2M	0:04.07	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 24	  0.00 	133.5M	0:02.08	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 23	  0.00 	86.9M  	0:01.34	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 22	  0.00 	52.1M  	0:00.78	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 21	  0.00 	29.5M  	0:00.43	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 20	  0.00 	15.1M  	0:00.22	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 19	  0.00 	11.1M  	0:00.16	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 18	  0.00 	6.38M  	0:00.09	Qa3 Rxe6 Qxa7 Qf7 Qa6 Qe7 Qc8+ Qe8 Qb7 Qe7
 17	  0.00 	3.77M  	0:00.05	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 16	  0.00 	2.62M  	0:00.03	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 15	  0.00 	2.08M  	0:00.03	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 14	  0.00 	1.48M  	0:00.02	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 13	  0.00 	1.21M  	0:00.01	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 12	  0.00 	1.01M  	0:00.01	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 11	+0.07 	973718	0:00.01	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 10	+0.07 	604519	0:00.01	Qa3 Rxe6 Qxa7 Nf7 Bc4 Rxe4 Qc7 b5 Bb3 Re1+ Rxe1 Qxe1+ Kg2 Qe2+ Kg3
  9	 -0.09 	392430	0:00.01	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
  8	 -0.18 	305537	0:00.00	Qa3 Rxe6 Qxa7 Nf7 Bc4 Nxh6 Qxb6 Kf7
  7	  0.00 	196248	0:00.00	Qd5 Rxe6 Bb5 Qc8 Kh1 Kf7 Rf1
  6	+0.20 	180726	0:00.00	Qd5 Rxe6 Bb5 Qc8 Kh1 Kf7
  5	+0.52 	103843	0:00.00	Qd5 Rxe6 Rd1 Kf7 Be3
  4	+0.61 	73990  	0:00.00	Qd5 Rxe6 Bb5 Nc6
  3	+0.59 	41134  	0:00.00	Qd5 Qe7 Rd1 Rc8
  2	+0.46 	32262  	0:00.00	Qd5 Rc5
  1	NNUE evaluation using C:\cluster.mfb\Popcnt-LP\eval\nn-49196287a910.nnue enabled
  1	+0.35 	19588  	0:00.00	Qd5
  0	#
the fastest run ( less than 5 seconds) was obtained by just using 32 cores (3970x( (and a smaller hash , same net as above

Code: Select all

dep	score	nodes	time	(not shown:  tbhits	knps	seldep)
 35	+4.96!	2.87G	0:48.42	Qxe5!
 35	+4.51!	2.58G	0:43.63	Qxe5!
 35	+4.43!	2.09G	0:35.71	Qxe5!
 35	+4.37!	2.07G	0:35.35	Qxe5!
 35	+4.33!	2.01G	0:34.38	Qxe5!
 35	+4.30!	1.99G	0:33.94	Qxe5!
 34	+4.01 	1.64G	0:28.25	Qxe5 fxe5 Rf1 Qe7 Bd1 Rc4 Bb3 b5 a4 a6 Kg2 Qe8 Rf3 Qe7 Rf2 Qe8 Ba2 Qa8 Kg3 Qe8 Rf1 Qe7 Kg2 Qg7 Bxc4 bxc4 Bxg7 Kxg7 Rf7+ Kh6 e7 Re8 Kg3 g5 Rf6+ Kg7 Rxa6 Rxe7 Kg4 Rb7 Kxg5 Kf7 Kf5 Rxb2 Ra7+ Kg8 h4 Rc2 Kf6 h5 Rg7+ Kh8 Rg3 Rh2 Kxe5 
 34	+3.93!	1.41G	0:24.27	Qxe5!
 34	+3.85!	1.40G	0:24.21	Qxe5!
 34	+3.79!	1.40G	0:24.20	Qxe5!
 34	+3.75!	1.40G	0:24.19	Qxe5!
 34	+3.72?	1.40G	0:24.17	Qxe5 fxe5?
 33	+3.75 	1.12G	0:19.48	Qxe5 fxe5 Rf1 Rc8 Bd1 Qxe6 Bb3 Qxb3 axb3 Re8 Kg2 a5 Kg3 Ra8 Kh3 Rb8 c4 Rd8 Kg4 Ra8 Rf2 Rc8 h4 Rd8 Kg5 Rb8 Kf6 Rf8+ Bxf8 Kxf8 Rd2 Ke8 Rd6 Rf8+ Kxe5 Rf3 Rxb6 Rh3 Rb8+ Ke7 Rb7+ Kd8 Rxh7 g5 h5 g4 h6 a4 bxa4 g3 Rg7 Rxh6 Rxg3 Ke7
 33	+3.85!	1.07G	0:18.61	Qxe5!
 33	+3.57!	975.1M	0:16.99	Qxe5!
 33	+3.12!	959.5M	0:16.72	Qxe5!
 33	+3.04!	936.6M	0:16.31	Qxe5!
 33	+2.99!	800.1M	0:13.98	Qxe5!
 33	+2.94!	785.8M	0:13.75	Qxe5!
 33	+2.92!	766.6M	0:13.44	Qxe5!
 32	+2.89 	702.3M	0:12.39	Qxe5 fxe5 Rf1 a6 Bd1 b5 a4 Rc7 Bb3 Rc4 Rf2 Qe7 Rf3 g5 Rf5 Qa7+ Kg2 Qg7 Bxg7 Kxg7 Bxc4 bxc4 Kf2 Re8 Rxe5 Kf6 Rf5+ Kg6 Rc5 Rb8 Ke3 Kf6 Rf5+ Kxe6 Rxg5 Rxb2 Rh5 Ra2 Kd4 Rxa4 Rh6+ Kd7 Rxh7+ Kc6 h4 Ra2 Rh6+ Kb5 Rh5+ Kb6 Kxc4
 32	+2.42!	507.0M	0:09.04	Qxe5!
 32	+1.81!	445.9M	0:08.02	Qxe5!
 32	+1.33!	386.3M	0:07.03	Qxe5!
 32	+0.96!	335.7M	0:06.16	Qxe5!
 32	+0.68!	312.9M	0:05.76	Qxe5!
 32	+0.47!	293.1M	0:05.42	Qxe5!
 32	+0.31!	273.0M	0:05.07	Qxe5!
 32	+0.19!	258.6M	0:04.83	Qxe5!
 32	+0.11!	247.6M	0:04.65	Qxe5!
 32	+0.05!	236.2M	0:04.46	Qxe5!
 31	  0.00 	149.7M	0:02.95	Qa3 Rxe6 Qxa7 Qe7 Qb8+ Qe8
 30	  0.00 	114.3M	0:02.25	Qa3 Rxe6 Qxa7 Qe7 Qb8+ Qe8
 29	  0.00 	90.6M  	0:01.80	Qa3 Rxe6 Qxa7 Qe7 Qb8+ Qe8
 28	  0.00 	73.7M  	0:01.48	Qa3 Rxe6 Qxa7 Qe7 Qb8+ Qe8
 27	  0.00 	62.5M  	0:01.24	Qa3 Rxe6 Qxa7 Qe7 Qb8+ Qe8
 26	  0.00 	41.4M  	0:00.82	Qa3 Rxe6 Qxa7 Qe7 Qb8+ Qe8
 25	  0.00 	35.5M  	0:00.70	Qa3 Rxe6 Qxa7 Qe7 Qb8+ Qe8
 24	  0.00 	27.8M  	0:00.53	Qa3 Rxe6 Qxa7 Qe7 Qb8+ Qe8
 23	  0.00 	18.1M  	0:00.35	Qa3 Rxe6 Qxa7 Qe7 Qb8+ Qe8
 22	  0.00 	9.48M  	0:00.18	Qa3 Rxe6 Qxa7 Qe7 Qb8+ Qe8
 21	  0.00 	7.11M  	0:00.13	Qa3 Rxe6 Qxa7 Qe7 Qb8+ Qe8
 20	  0.00 	4.44M  	0:00.08	Qa3 Rxe6 Qxa7 Qe7 Qb8+ Qe8
 19	  0.00 	4.17M  	0:00.08	Qa3 Rxe6 Qxa7 Qe7 Qb8+ Qe8
 18	  0.00 	2.93M  	0:00.05	Qa3 Rxe6 Qxa7 Qe7 Qb8+ Qe8
 17	  0.00 	2.15M  	0:00.04	Qa3 Rxe6 Qxa7 Qe7 Qb8+ Qe8
 16	  0.00 	1.68M  	0:00.03	Qa3 Rxe6 Qxa7 Qe7 Qb8+ Qe8
 15	  0.00 	1.58M  	0:00.03	Qa3 Rxe6 Qxa7 Qe7 Qb8+ Qe8
 14	  0.00 	1.13M  	0:00.02	Qa3 Rxe6 Qxa7 Qe7 Qb8+ Qe8
 13	  0.00 	833249	0:00.01	Qa3 Rxe6 Qxa7 Qe7 Qb8+ Qe8
 12	  0.00 	721096	0:00.01	Qa3 Rxe6 Qxa7 Qe7 Qb8+ Qe8
 11	  0.00 	537392	0:00.01	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
 10	 -0.04 	453532	0:00.01	Qa3 Rxe6 Qxa7 Qe7 Qa8+ Qe8
  9	+0.01 	273370	0:00.01	Qa3 Rxe6 Qxa7 Nf7 Bc4 Rxe4 Bxf7+ Qxf7 Qxb6 g5 Rf1 Re6 Qb3 Qa7+ Kh1
  8	+0.10 	189922	0:00.00	Qa3 Rxe6 Qxa7 Qf7 Qa6 Re8 Qxb6 g5
  7	+0.37 	127235	0:00.00	Qd5 Rxe6 Bb5 Qc8 Rf1 Qc5+ Kh1 Qxd5
  6	+0.74 	82574  	0:00.00	Qd5 Rxe6 Rf1 Qe7 Qa8+ Qe8 Qxe8+ Rxe8 Rxf6
  5	+0.69 	47847  	0:00.00	Qd5 Qe7 Rd1 Rc8 a4
  4	+0.47 	33644  	0:00.00	Qd5 Qe7 h4 Rc8
  3	+0.40 	14604  	0:00.00	Qd5 Rc5 Qd6
  2	+0.28 	10704  	0:00.00	Qd5 Qe7
  1	+0.26 	7235    	0:00.00	Qd5
  0	#
Image
peter
Posts: 3185
Joined: Sat Feb 16, 2008 7:38 am
Full name: Peter Martan

Re: Can any engine find the winning move here ?

Post by peter »

jefk wrote: Tue Apr 13, 2021 10:01 pm Well, the queen sacrifice (move 24) was not a winning move.
White only won because 29....a5? was a mistake.
(cxb3 would lead to a draw).

But before the queen sacrifice the position move 23 Qd5!
would be winning, instead of the sloppy 23.Qxd6?!
In the game 29...a5? was a re-blunder already, to make 29...cxb3! (=) impossible, 28.Bxc4? is to be replaced by 28.a4, if so, Black's lost.

23.Qd5 wins as well as 23.Qxd6 does regards
Peter.
jefk
Posts: 626
Joined: Sun Jul 25, 2010 10:07 pm
Location: the Netherlands
Full name: Jef Kaan

Re: Can any engine find the winning move here ?

Post by jefk »

ChessQueen wrote
if the Queen move to 25.Qd5? the Rook will simply take the pawn losing momentum of the attack, and if the White bishop move to d1 then the Black King will move to f7 don't you believe
Not 25.Qd5 ?, but as i wrote 23.Qd5! would be winning without
any need for a spectacular queen sacrifice...

Peter wrote:
23.Qd5 wins as well as 23.Qxd6 does regards
ok thx for your post,
for 23.Qxd6 with a pure NNUE engine, and not long time, i first
didn't see a win, and a later Black blunder (29...a5) was obvious.
Now i checked with a hybrid/Nnue/classic engine(setting),
and the engine sees it (including 28.a4!) after you make the move(s)
and do some back-scrolling (so even this hybrid engine doesn't see it
by itself, obviously pruning too much except Blackdiamond apparently).
NB Qxd6! only wins in another way than played in the game, namely,
with 28.a4! (not with 28.Bxc4 ? as in the game because then
-before the Black blunder, Black could have drawn with 29...cxb3!).
So, i could now see all that with a not- so fast machine (and
hybrid engine); it appears that engine is also is important
besides hardware speed...

NB i certainly was not trolling... (hadn't seen two other posts yet,
looks like there was some (simultaneous) cross-postings); also the poster
was not trolling imho, personally i didn't know this position yet
(although apparently it has been posted earlier quite some times),
and it's interesting to check with the latest engines isn't it.
peter
Posts: 3185
Joined: Sat Feb 16, 2008 7:38 am
Full name: Peter Martan

Re: Can any engine find the winning move here ?

Post by peter »

jefk wrote: Wed Apr 14, 2021 12:07 pm for 23.Qxd6 with a pure NNUE engine, and not long time, i first
didn't see a win, and a later Black blunder (29...a5) was obvious.
Now i checked with a hybrid/Nnue/classic engine(setting),
and the engine sees it (including 28.a4!) after you make the move(s)
and do some back-scrolling (so even this hybrid engine doesn't see it
by itself, obviously pruning too much except Blackdiamond apparently).
NB Qxd6! only wins in another way than played in the game, namely,
with 28.a4! (not with 28.Bxc4 ? as in the game because then
-before the Black blunder, Black could have drawn with 29...cxb3!).
Here I gave Crystal a try with empty hash:

499: Gusev,Y - Auerbach,E, Molniya 1946
4q1kr/p6p/1prQPppB/4n3/4P3/2P5/PP2B2P/R5K1 w - - 0 1

Analysis by Crystal 140121:

Code: Select all

24.Qd5 Rxe6 25.Bd1 Qc6 26.Qxc6 Nxc6 27.Bb3 
  =/+  (-0.31)   Depth: 7/11   00:00:00  167kN
...
24.Qa3 Rxe6 25.Qxa7 Qf7 26.Qb8+ Qe8 
  =  (0.00)   Depth: 23/29   00:00:03  37842kN
24.Qxe5 
  =  (0.08 ++)   Depth: 24/39   00:00:04  44966kN
24.Qxe5 
  =  (0.16 ++)   Depth: 24/39   00:00:04  45066kN
24.Qxe5 
  =  (0.28 ++)   Depth: 24/39   00:00:04  45327kN
24.Qxe5 
  +/=  (0.46 ++)   Depth: 24/39   00:00:04  46136kN
...
24.Qxe5 fxe5 25.Rf1 Rc8 26.Bd1 Qxe6 27.Bb3 Qxb3 28.axb3 Rd8 29.Kg2 Rc8 30.c4 a5 31.Kg3 Rd8 32.Kg4 Ra8 33.Kg5 Rb8 34.Kf6 Rf8+ 35.Bxf8 Kxf8 36.Rd1 Ke8 37.Rd6 Rf8+ 38.Kxe5 Rf2 39.h4 b5 40.cxb5 Rxb2 41.Ra6 Rxb3 42.Rxa5 Rb4 43.Kd6 Rd4+ 44.Kc6 
  +-  (5.40)   Depth: 24/56   00:00:09  105MN
...
24.Qxe5 fxe5 25.Rf1 Rc8 26.Bd1 Qxe6 27.Bb3 Qxb3 28.axb3 Rd8 29.c4 Re8 30.Kg2 Rd8 31.b4 Rc8 32.b5 Rd8 33.Kh3 Rc8 34.Kg4 Rb8 35.b4 Ra8 36.Kg3 Re8 37.c5 Ra8 38.Kg4 Rc8 39.Kh4 Ra8 40.c6 Rb8 41.Kg5 Ra8 42.Kf6 a6 43.c7 axb5 
  +-  (5.68)   Depth: 25/58   00:00:12  144MN
...
24.Qxe5 fxe5 25.Rf1 Qe7 26.Bd1 Rc4 27.Bb3 b5 28.Kg2 Qg7 29.Bxg7 Kxg7 30.Rf7+ Kh6 31.Bxc4 bxc4 32.Rxa7 Re8 33.e7 Kg7 34.Rc7 Kf6 35.Rxc4 Kxe7 36.a4 Ra8 37.Rb4 Kd7 38.h4 Kc6 39.Kf2 Ra5 40.Ke3 Rxa4 41.Rxa4 
  +-  (6.41)   Depth: 26/43   00:00:13  160MN
...
24.Qxe5 fxe5 25.Rf1 Qe7 26.Bd1 Rc4 27.Bb3 b5 28.Kg2 Qg7 29.Bxg7 Kxg7 30.Rf7+ Kh6 31.Bxc4 bxc4 32.Rxa7 Re8 33.e7 Kg7 34.Rc7 Kf7 35.Rxc4 Rxe7 36.a4 Ra7 37.Kg3 Ke7 38.Kg4 h6 39.Rb4 Ra6 40.h4 Kf6 41.h5 gxh5+ 42.Kxh5 Ke7 43.b3 Rf6 44.a5 Rf3 45.c4 Kd6 46.Rb5 Rxb3 47.Rxb3 
  +-  (7.21)   Depth: 27/62   00:00:17  213MN
...
24.Qxe5 fxe5 25.Rf1 Qe7 26.Bd1 b5 27.Kg2 Rc4 28.Bb3 Qg7 29.Bxg7 Kxg7 30.Rf7+ Kh6 31.Bxc4 bxc4 32.Rxa7 Re8 33.e7 Kg7 34.Rc7 Kf7 35.Rxc4 Kxe7 36.a4 Ra8 37.Kg3 Ra6 38.Kg4 h6 39.Rb4 Kd6 40.h4 Kd7 41.h5 gxh5+ 42.Kxh5 Kc7 43.Kg4 Ra8 44.Rc4+ Kb6 45.Kh5 Rg8 46.Kxh6 Ka5 47.Kh5 Rg2 48.b3 Rg5+ 49.Kh4 
  +-  (7.57)   Depth: 28/61   00:00:21  256MN
...
24.Qxe5 fxe5 25.Rf1 Qe7 26.Bd1 b5 27.Kg2 Rc4 28.Bb3 Qg7 29.Bxg7 Kxg7 30.Rf7+ Kh6 31.Bxc4 bxc4 32.Rxa7 Re8 33.e7 Kg7 34.Rc7 Kf7 35.Rxc4 Rb8 36.Rb4 Ra8 37.a4 Kxe7 38.Kg3 Ra6 39.Kh4 Kf6 40.Kg4 h6 41.b3 Rd6 42.a5 Rd2 43.Rb6+ Kg7 44.h3 h5+ 45.Kh4 Kh6 46.a6 Re2 47.a7 Rxe4+ 48.Kg3 Re3+ 49.Kf2 
  +-  (7.75)   Depth: 29/59   00:00:23  283MN
...
24.Qxe5 fxe5 25.Rf1 Qe7 26.Bd1 b5 27.Bb3 Rc4 28.Kg2 Qg7 29.Bxg7 Kxg7 30.Rf7+ Kh6 31.Bxc4 bxc4 32.Rxa7 Re8 33.e7 Kg7 34.Rc7 Kf7 35.Rxc4 Rb8 36.Rb4 Ra8 37.a4 Kxe7 38.Kg3 Ra6 39.Kg4 Kf6 40.Rc4 h6 41.Rb4 Ke7 42.h4 Kd6 43.Rc4 Ra7 44.b3 Rf7 45.a5 Rf6 
  +-  (8.16)   Depth: 30/76   00:00:31  374MN
...
24.Qxe5 fxe5 25.Rf1 Qe7 26.Bd1 Rc4 27.Bb3 b5 28.Kg2 Qg7 29.Bxg7 Kxg7 30.Rf7+ Kh6 31.Bxc4 bxc4 32.Rxa7 Re8 33.e7 Kg7 34.Rc7 Kf7 35.Rxc4 Rb8 36.Rb4 Ra8 37.a4 Kxe7 38.Kg3 h6 39.Kg4 Kd7 40.Rc4 Rf8 41.b4 Rf2 42.h4 h5+ 43.Kg3 Ra2 44.a5 Ra1 45.Rc5 Kd6 46.Rd5+ Ke6 47.Kf3 Rh1 48.a6 Rxh4 49.Rc5 Kd6 50.a7 
  +-  (8.53)   Depth: 31/67   00:00:36  440MN
...
24.Qxe5 fxe5 25.Rf1 Qe7 26.Bd1 Rc4 27.Bb3 b5 28.Kg2 Qg7 29.Bxg7 Kxg7 30.Rf7+ Kh6 31.Bxc4 bxc4 32.Rxa7 Re8 33.e7 Kg7 34.Rc7 Kf7 35.Rxc4 Rb8 36.Rb4 Ra8 37.a4 Kxe7 38.Kg3 Kd6 39.Rc4 Ra6 40.b3 h6 41.Kg4 Ra7 42.h4 Ra8 43.h5 g5 44.Rb4 Kc7 45.Rb5 Rf8 46.Rxe5 Rf4+ 47.Kg3 Rh4 48.b4 Rxh5 
  +-  (8.40)   Depth: 32/70   00:00:58  707MN
...
24.Qxe5 fxe5 25.Rf1 Qe7 26.Bd1 b5 27.Bb3 Rc4 28.Kg2 Qg7 29.Bxg7 Kxg7 30.Rf7+ Kh6 31.Bxc4 bxc4 32.Rxa7 Re8 33.e7 Kg7 34.Rc7 Kf7 35.Rxc4 Rb8 36.Rb4 Ra8 37.a4 Kxe7 38.Kg3 h6 39.Rc4 h5 40.Kh4 Rf8 41.Rb4 Rf1 42.a5 Ra1 43.Kg5 Rxa5 44.Kxg6 h4 45.h3 Ra1 46.Kg5 Rg1+ 47.Kxh4 Kf6 48.Rb7 Re1 
  +-  (8.43)   Depth: 33/60   00:01:00  732MN
...
24.Qxe5 fxe5 25.Rf1 Qe7 26.Bd1 b5 27.Kg2 Qg7 28.Bb3 Rc4 29.Bxg7 Kxg7 30.Rf7+ Kh6 31.Bxc4 bxc4 32.Rxa7 Re8 33.e7 Kg7 34.Rc7 Kf7 35.Rxc4 Rb8 36.Rb4 Ra8 37.a4 Kxe7 38.Kg3 Kd6 39.Rc4 h5 40.Kh4 Rf8 41.b4 Rf2 42.h3 Rf4+ 43.Kg5 Rf3 44.Kxg6 Rxh3 45.b5 h4 46.Rc6+ Kd7 47.Kf5 Rg3 48.a5 h3 49.Rh6 Rxc3 
  +-  (8.93)   Depth: 34/87   00:01:10  862MN
...
24.Qxe5 fxe5 25.Rf1 Qe7 26.Bd1 Rc4 27.Bb3 b5 28.Kg2 Qg7 29.Bxg7 Kxg7 30.Bxc4 bxc4 31.Rf7+ Kh6 32.Rxa7 Re8 33.e7 Kg7 34.Rc7 Kf7 35.Rxc4 Rb8 36.Rb4 Ra8 37.a4 Kxe7 38.Kg3 Ra6 39.Rc4 Kd7 40.b3 Ra8 41.Kg4 h6 42.h3 Ke7 43.Rc7+ Kd6 44.Rg7 Rf8 45.Rxg6+ Kc7 46.Rxh6 Rf4+ 47.Kg3 Rxe4 48.Kf3 Re1 49.Rh4 Kd6 50.b4 Rc1 51.Ke4 Rxc3 52.Rh6+ Kc7 53.Kxe5 
  +-  (9.61)   Depth: 35/63   00:01:36  1196MN
This was the best one out of 3 trials, two others were 14" and 10" time to solution.

12x3GHz Xeon X5670 (SSE4.1 popcnt), 32G hash, all options default including the net, only exception SyzygyProbeLimit 0.
Peter.
User avatar
MikeB
Posts: 4889
Joined: Thu Mar 09, 2006 6:34 am
Location: Pen Argyl, Pennsylvania

Re: Can any engine find the winning move here ?

Post by MikeB »

As long as we're talking about oldies , but goodies ( traditionally very hard problems for engines to solve)

Plaskett's Puzzle ( posted here many times, actually misnamed as Dutch endgame composer Gijs van Breukelen created this position),
English grandmaster James Plaskett presented this puzzle at a top-flight chess tournament in Brussels in 1987, hence the name "Plaskett's Puzzle"

[d]8/3P3k/n2K3p/2p3n1/1b4N1/2p1p1P1/8/3B4 w - - 0 1 bm Ng6+; id Plaskett's Puzzle

Historically, this has been the solution

But BlackDiamond says that ends up being a mate-in-13 (after Kg6)

Code: Select all

38	  #12 	2.08G	0:21.57	Bh5+ Kf5 d8=Q Ne4+ Nxe4 Kxe4 Kc6 Nb8+ Qxb8 Kd3 Qd8+ Kc2 Bg6+ Kb3 Qd1+ c2 Qxc2+ Ka3 Kd5 e2 Kc4 e1=Q Qb3#
 37	  #12 	1.40G	0:14.40	Bh5+ Kf5 d8=Q Ne4+ Nxe4 Kxe4 Kc6 Nb8+ Qxb8 Kd3 Qd8+ Kc2 Bg6+ Kb3 Qd1+ c2 Qxc2+ Ka3 Kd5 e2 Kc4 e1=Q Qb3#
 36	  #12 	851.1M	0:08.72	Bh5+ Kf5 d8=Q Ne4+ Nxe4 Kxe4 Kc6 Nb8+ Qxb8 Kd3 Qd8+ Kc2 Bg6+ Kb3 Qd1+ c2 Qxc2+ Ka3 Kd5 e2 Kc4 e1=Q Qb3#
 35	  #12 	537.1M	0:05.48	Bh5+ Kf5 d8=Q Ne4+ Nxe4 Kxe4 Kc6 Nb8+ Qxb8 Kd3 Qd8+ Kc2 Bg6+ Kb3 Qd1+ c2 Qxc2+ Ka3 Kd5 e2 Kc4 e1=Q Qb3#
 34	  #12 	344.4M	0:03.51	Bh5+ Kf5 d8=Q Ne4+ Nxe4 Kxe4 Kc6 Nb8+ Qxb8 Kd3 Qd8+ Kc2 Bg6+ Kb3 Qd1+ c2 Qxc2+ Ka3 Kd5 e2 Kc4 e1=Q Qb3#
 33	  #13 	199.6M	0:02.04	Bh5+ Kf5 d8=Q Ne4+ Nxe4 Kxe4 Be2 c4+ Kc6 Ke5 Qh8+ Kf5 Qg7 Be7 Qxe7 Nb4+ Kd6 Nc6 Qh7+ Kg5 Bh5 Ne5 Kxe5 Kxh5 Qf5#
 32	  #13 	150.7M	0:01.54	Bh5+ Kf5 d8=Q Ne4+ Nxe4 Kxe4 Be2 c4+ Kc6 Ke5 Qh8+ Kf5 Qg7 Be7 Qxe7 Nb4+ Kd6 Nc6 Qh7+ Kg5 Bh5 Ne5 Kxe5 Kxh5 Qf5#
 31	  #13 	90.6M  	0:00.92	Bh5+ Kf5 d8=Q Ne4+ Nxe4 Kxe4 Be2 c4+ Kc6 Ke5 Qh8+ Kf5 Qg7 Be7 Qxe7 Nb4+ Kd6 Nc6 Qh7+ Kg5 Bh5 Ne5 Kxe5 Kxh5 Qf5#
 30	  #13 	70.6M  	0:00.72	Bh5+ Kf5 d8=Q Ne4+ Nxe4 Kxe4 Be2 c4+ Kc6 Ke5 Qh8+ Kf5 Qg7 Be7 Qxe7 Nb4+ Kd6 Nc6 Qh7+ Kg5 Bh5 Ne5 Kxe5 Kxh5 Qf5#
 29	  #13 	56.1M  	0:00.57	Bh5+ Kf5 d8=Q Ne4+ Nxe4 Kxe4 Be2 c4+ Kc6 Ke5 Qh8+ Kf5 Qg7 Be7 Qxe7 Nb4+ Kd6 Nc6 Qh7+ Kg5 Bh5 Ne5 Kxe5 Kxh5 Qf5#
 28	  #13 	46.0M  	0:00.46	Bh5+ Kf5 d8=Q Ne4+ Nxe4 Kxe4 Be2 c4+ Kc6 Ke5 Qh8+ Kf5 Qg7 Be7 Qxe7 Nb4+ Kd6 Nc6 Qh7+ Kg5 Bh5 Ne5 Kxe5 Kxh5 Qf5#
 27	  #13 	36.2M  	0:00.36	Bh5+ Kf5 d8=Q Ne4+ Nxe4 Kxe4 Be2 c4+ Kc6 Ke5 Qh8+ Kf5 Qg7 Be7 Qxe7 Nb4+ Kd6 Nc6 Qh7+ Kg5 Bh5 Ne5 Kxe5 Kxh5 Qf5#
 26	  #13 	28.8M  	0:00.29	Bh5+ Kf5 d8=Q Ne4+ Nxe4 Kxe4 Be2 c4+ Kc6 Ke5 Qh8+ Kf5 Qg7 Be7 Qxe7 Nb4+ Kd6 Nc6 Qh7+ Kg5 Bh5 Ne5 Kxe5 Kxh5 Qf5#
 25	  #14 	21.9M  	0:00.22	Bh5+ Kf5 d8=Q Ne4+ Nxe4 Kxe4 Qa8+ Kd3 Qd5+ Kc2 Qa2+ Kc1 Bg6 c4+ Kd5 Kd1 Qc2+ Ke1 Bh5 Kf1 Qe2+ Kg1 Bf3 Nc7+ Kxc4 Nb5 Qg2#
 24	  #14 	17.5M  	0:00.17	Bh5+ Kf5 d8=Q Ne4+ Nxe4 Kxe4 Qa8+ Kd3 Qd5+ Kc2 Qa2+ Kc1 Bg6 c4+ Kd5 Kd1 Qc2+ Ke1 Bh5 Kf1 Qe2+ Kg1 Bf3 Nc7+ Kxc4 Nb5 Qg2#
 23	  #14 	13.8M  	0:00.13	Bh5+ Kf5 d8=Q Ne4+ Nxe4 Kxe4 Qa8+ Kd3 Qd5+ Kc2 Qa2+ Kc1 Bg6 c4+ Kd5 Kd1 Qc2+ Ke1 Bh5 Kf1 Qe2+ Kg1 Bf3 Nc7+ Kxc4 Nb5 Qg2#
 22	  #14 	11.7M  	0:00.11	Bh5+ Kf5 d8=Q Ne4+ Nxe4 Kxe4 Qa8+ Kd3 Qd5+ Kc2 Qa2+ Kc1 Bg6 c4+ Kd5 Kd1 Qc2+ Ke1 Bh5 Kf1 Qe2+ Kg1 Bf3 Nc7+ Kxc4 Nb5 Qg2#
 21	  #14 	8.91M  	0:00.08	Bh5+ Kf5 d8=Q Ne4+ Nxe4 Kxe4 Qa8+ Kd3 Qd5+ Kc2 Qa2+ Kc1 Bg6 c4+ Kd5 Kd1 Qc2+ Ke1 Bh5 Kf1 Qe2+ Kg1 Bf3 Nc7+ Kxc4 Nb5 Qg2#
 20	  #14 	7.37M  	0:00.07	Bh5+ Kf5 d8=Q Ne4+ Nxe4 Kxe4 Qa8+ Kd3 Qd5+ Kc2 Qa2+ Kc1 Bg6 c4+ Kd5 Kd1 Qc2+ Ke1 Bh5 Kf1 Qe2+ Kg1 Bf3 Nc7+ Kxc4 Nb5 Qg2#
 19	  #14 	5.52M  	0:00.05	Bh5+ Kf5 d8=Q Ne4+ Nxe4 Kxe4 Qa8+ Kd3 Qd5+ Kc2 Qa2+ Kc1 Bg6 c4+ Kd5 Kd1 Qc2+ Ke1 Bh5 Kf1 Qe2+ Kg1 Bf3 Nc7+ Kxc4 Nb5 Qg2#
 18	  #14 	4.83M  	0:00.04	Bh5+ Kf5 d8=Q Ne4+ Nxe4 Kxe4 Qa8+ Kd3 Qd5+ Kc2 Qa2+ Kc1 Bg6 c4+ Kd5 Kd1 Qc2+ Ke1 Bh5 Kf1 Qe2+ Kg1 Bf3 Nc7+ Kxc4 Nb5 Qg2#
 17	  #15 	3.66M  	0:00.03	Bh5+ Kf5 d8=Q Ne4+ Nxe4 Kxe4 Qa8+ Kd3 Qd5+ Kc2 Qa2+ Kc1 Bg6 Kd1 Qc2+ Ke1 Bh5 Kf1 Qe2+ Kg1 Qxe3+ Kh2 Qf2+ Kh3
 16	  #17 	1.57M  	0:00.01	Bc2+ Kxf6 d8=Q+ Kf7 Qe7+ Kg8 Qe8+ Kg7 Qg6+ Kf8 Qf6+ Kg8 Kd7 c4 Qg6+ Kf8 Qxh6+ Kf7 Qg6+ Kf8 Qf6+ Kg8 Qxg5+ Kf8 Qh6+ Kf7 Bg6+ Kf6 Be4+ Ke5 Qe6+ Kd4
 15	  #17 	1.43M  	0:00.01	Bc2+ Kxf6 d8=Q+ Kf7 Qe7+ Kg8 Qe8+ Kg7 Qg6+ Kf8 Qf6+ Kg8 Kd7 c4 Qg6+ Kf8 Qxh6+ Kf7 Qg6+ Kf8 Qf6+ Kg8 Qxg5+ Kf8 Qf6+ Kg8 Bg6 Nc5+ Ke8 Nd3 Qf7+ Kh8
 14	  #16 	1.26M  	0:00.01	Bc2+ Kxf6 d8=Q+ Kf7 Qe7+ Kg8 Qe8+ Kg7 Qg6+ Kf8 Qf6+ Kg8 Kd7 c4 Qg6+ Kf8 Qxh6+ Kf7 Qg6+ Kf8 Qf6+ Kg8 Qxg5+ Kf7 Bg6+ Kg7 Bd3+ Kf8
 13	  #17 	1.18M  	0:00.01	Bc2+ Kxf6 d8=Q+ Kf7 Qd7+ Kg8 Qe8+ Kg7 Qg6+ Kf8 Qf6+ Kg8 Kd7 c4 Qg6+ Kf8 Qxh6+ Kf7 Qg6+ Kf8 Qf6+ Kg8 Qxg5+ Kf8 Qf6+ Kg8 Bg6
 12	  #16 	1.09M  	0:00.01	Bc2+ Kxf6 d8=Q+ Kf7 Qe7+ Kg8 Qe8+ Kg7 Qg6+ Kf8 Qf6+ Kg8 Kd7 c4 Qg6+ Kf8 Qxh6+ Kf7 Qg6+ Kf8 Qf6+ Kg8 Qxg5+ Kf8 Qh6+ Kg8 Bg6
 11	  #17 	1.04M  	0:00.01	Bc2+ Kxf6 d8=Q+ Kf7 Qd7+ Kg8 Qe8+ Kg7 Qg6+ Kf8 Qf6+ Kg8 Kd7 c4 Qg6+ Kf8 Qxh6+ Kf7 Qg6+ Kf8 Qf6+ Kg8 Qxg5+ Kf8 Qf6+ Kg8 Bg6 Nc5+ Ke8 Nd3 Qf7+ Kh8
 10	+99.17 	603970	0:00.01	Bc2+ Kxf6 d8=Q+ Kg7 Qe7+ Kg8 Qe8+ Kg7 Qg6+ Kf8 Qf6+ Kg8 Kd7 Nf7 Bb3 c4 Bxc4
  9	+64.61 	475566	0:00.01	Bc2+ Kxf6 d8=Q+ Kg7 Qe7+ Kg8 Qe8+ Kg7 Qg6+ Kf8 Qf6+ Nf7+ Kd7 Kg8 Bb3 c4 Bxc4
  8	+64.65 	403629	0:00.01	Bc2+ Kg7 Nh5+ Kf7 d8=Q c4+ Ke5 Bf8 Qd7+ Kg8 Nf6+ Kh8 Qe8
  7	+64.60 	286718	0:00.00	Bc2+ Kg7 Nh5+ Kf7 d8=Q c4+ Ke5 Bf8 Qd7+ Kg8 Nf6+ Kh8 Qe8
  6	+64.59 	242426	0:00.00	Bc2+ Kg7 Nh5+ Kf7 d8=Q c4+ Ke5 Nf3+ Kf4 Bd6+ Qxd6
  5	+64.65 	104905	0:00.00	Bc2+ Kxf6 d8=Q+ Kf7 Qe7+ Kg8 Qe8+ Kg7 Qg6+ Kf8 Qf6+ Nf7+ Kd7
  4	+8.50 	66133  	0:00.00	Bh5+ Kg7 d8=Q c4+ Kd5 Bf8
  3	+10.05 	51326  	0:00.00	Bh5+ Kg7 Ne8+ Kh7 d8=Q
  2	+63.95 	38998  	0:00.00	Bc2+ Kg7 Nh5+ Kf7
  1	NNUE evaluation using C:\cluster.mfb\Popcnt-LP\eval\nn-49196287a910.nnue enabled
  1	+64.29 	31588  	0:00.00	Bc2+ Kg7
and it does now appear that Kg7 may offer stiffer resistance as it delays mate by one move ( Nf6 Kg7 Kh7 Nh5! - now Kg7 leads to shorter mate and Bc2 will mate.
Perhaps this was the reason why van Breukelen delayed publishing it for so long? So technically it's a mate-in-14 ( hopefully I'm correct in saying that since I'm getting old)

Black-Diamond ,with my yet to be released net nn-49196287a910.nnue finds Nf6 very quickly on back to back runs. Note it never shows Kg6 as the second move in the pv after depth 4.

Code: Select all

 38	+63.95 	5.94G	1:03.01	Nf6+ Kg7 Nh5+ Kg6 Bc2+ Kxh5 d8=Q Kg4 Qf6 Kxg3 Qe5+ Kf3 Bd1+ Kg2 Qxe3 c4+ Kd5 Bc5 Qf4 Bf2 Qxc4 Nc5 Qg4+ Kh2 Bf3 Bg3 Kxc5 c2 Qc4 Bf2+ Kd5 Nxf3 Qxc2 Kg3 Qg6+ Ng5 Qxh6
 37	+63.91 	5.19G	0:55.22	Nf6+ Kg7 Nh5+ Kg6 Bc2+ Kxh5 d8=Q Kg4 Qf6 c4+ Kd5 Kxg3 Qe5+ Kf3 Bd1+ Kg2 Qxe3 Bc5 Qe2+ Bf2 Qxc4 c2 Bxc2 Nc5 Qg4+ Kh2 Kc6 Bg1 Qh4+ Kg2 Kd5 Nh3 Be4+ Nxe4 Qxe4+ Kh2 Qe5+ Kg2 Qg7+ Kf1 Qf6+ Bf2 Qxh6
 37	+63.90?	4.96G	0:52.78	Nf6+ Kg7?
 36	+63.95!	4.96G	0:52.72	Nf6+!
 36	+63.90?	4.96G	0:52.71	Nf6+ Kg7?
 35	+63.95 	4.80G	0:50.96	Nf6+ Kg7 Nh5+ Kg6 Bc2+ Kxh5 d8=Q Kg4 Qf6 Kxg3 Qe5+ Kf3 Bd1+ Kg2 Qxe3 c4+ Kd5 Bc5 Qe2+ Bf2 Qxc4 Nc5 Qg4+ Kh2 Bf3 Bg3 Kxc5 c2 Qc4 Nxf3 Qxc2+ Kh3 Qe2 Ne5 Qh5+ Kg2 Qxh6
 34	+63.91 	4.01G	0:42.61	Nf6+ Kg7 Nh5+ Kg6 Bc2+ Kxh5 d8=Q Kg4 Qf6 Kxg3 Qe5+ Kf3 Bd1+ Kg2 Qxe3 c4+ Kd5 Bc5 Qe2+ Bf2 Qxc4 Nb8 Qg4+ Bg3 Bc2 Kh2 Be4 Nxe4 Kxe4 Nc6 Qh5+ Kg2 Qf3+ Kh3 Qh1+ Kg4 Qxh6 Ne5 Qe3 c2 Qe2+ Kg5 Qxc2
 34	+63.80!	3.99G	0:42.45	Nf6+!
 34	+63.74?	3.53G	0:37.30	Nf6+ Kg7?
 34	+63.82?	3.51G	0:37.11	Nf6+ Kg7?
 34	+63.87?	3.49G	0:36.93	Nf6+ Kg7?
 33	+63.93 	3.41G	0:36.04	Nf6+ Kg7 Nh5+ Kg6 Bc2+ Kxh5 d8=Q Kg4 Qf6 Kxg3 Qe5+ Kf2 Qh2+ Ke1 Qg1+ Ke2 Qg2+ Ke1 Ke5 c4 Qg1+ Ke2 Kd5 Nc7+ Kxc4 Kf3 Bd1+ e2 Qf1+ Ke4 Qxe2+ Kf5 Kxb4 Nce6 Qh5 Nf4 Bc2+ Ke5 Qxh6 Nge6 Kxc3
 32	+63.91!	2.95G	0:31.02	Nf6+!
 32	+63.86?	2.86G	0:30.01	Nf6+ Kg7?
 31	+63.91 	2.83G	0:29.77	Nf6+ Kg7 Nh5+ Kg6 Bc2+ Kxh5 d8=Q Kg4 Qf6 Kxg3 Qe5+ Kf3 Bd1+ Kg2 Qxe3 c4+ Kd5 Bc5 Qe2+ Bf2 Qxc4 Nb8 Qg4+ Bg3 Bc2 Nd7 Qxd7 Nh3 Be4+ Kh2 Kc6 Nf4 Qd1 Kh3 Qf3 h5 Bf5+ Kh4 Qxc3 Bf2 Qg7 Ba7 Qxa7
 31	+63.86!	2.54G	0:26.68	Nf6+!
 31	+63.81?	2.48G	0:26.02	Nf6+ Kg7?
 30	+63.86 	2.32G	0:24.37	Nf6+ Kg7 Nh5+ Kg6 Bc2+ Kxh5 d8=Q Kg4 Qf6 Nb8 Bd1+ Kxg3 Qe5+ Kg2 Qxe3 Na6 Bc2 c4+ Kd5 Bc5 Qxc3 Bf2 Qxc4 Nc5 Qg4+ Kh2 Kc6 Bg1 Qh4+ Kg2 Kd5 Bf2 Qxh6 Be3 Qh5 Nce6 Qe2+ Bf2 Kc4 Kg3 Qe5+ Kg2 Be4+ Kf1 Bd5 Bd4 Qg3 Bf2 Qd3+ Kg1 Bxe6
 30	+63.70!	2.15G	0:22.66	Nf6+!
 30	+63.54!	2.10G	0:22.12	Nf6+!
 30	+63.42!	2.08G	0:21.89	Nf6+!
 30	+63.34!	2.03G	0:21.42	Nf6+!
 30	+63.28?	2.00G	0:21.04	Nf6+ Kg7?
 29	+63.34 	1.94G	0:20.41	Nf6+ Kg7 Nh5+ Kg6 Bc2+ Kxh5 d8=Q Kg4 Qf6 Kxg3 Qe5+ Kf3 Bd1+ Kg2 Qxe3 c4+ Kd5 Bc5 Qe2+ Bf2 Qxc4 c2 Bxc2 Nc5 Qg4+ Kh2 Kc6 Nh3 Be4 Nxe4 Qxe4
 28	+63.30 	1.75G	0:18.41	Nf6+ Kg7 Nh5+ Kg6 Bc2+ Kxh5 d8=Q Kg4 Qf6 Kxg3 Qe5+ Kf3 Bd1+ Kg2 Qxe3 c4+ Kd5 Bc5 Qe2+ Bf2 Qxc4 Nb8 Qg4+ Bg3 Bc2 Nh3 Be4+ Kh2 Qe2+ Nf2 Qf1 Nxe4 Kxe4 Nd7 Qc4 Ne5 Qxc3
 28	+63.28!	1.75G	0:18.38	Nf6+!
 28	+63.23?	1.71G	0:17.97	Nf6+ Kg7?
 27	+63.28!	1.69G	0:17.80	Nf6+!
 27	+63.23?	1.68G	0:17.74	Nf6+ Kg7?
 26	+63.28 	1.68G	0:17.67	Nf6+ Kg7 Nh5+ Kg6 Bc2+ Kxh5 d8=Q Kg4 Qf6 Kxg3 Qe5+ Kf3 Bd1+ Kg2 Qxe3 c4+ Kd5 Bc5 Qe2+ Bf2 Qxc4 Nb8 Qg4+ Bg3 Bc2 Nh3 Be4+ Kh2 Qe2+ Nf2 Qf1 Nxe4 Kxe4 Nd7 Qd1 Ne5 Qc2+ Kh3 Qxc3
 25	+63.26 	1.56G	0:16.39	Nf6+ Kg7 Nh5+ Kg6 Bc2+ Kxh5 d8=Q Kg4 Qf6 Kxg3 Qe5+ Kf2 Qh2+ Ke1 Qg1+ Ke2 Qg2+ Ke1 Ke5 c4 Qg1+ Ke2 Kd5 Nc7+ Kxc4 Kf3 Qf1+ Kg3 Qe2 Bc5 Kxc5 Nce6+ Kd6 Nf3 Qxe3 Nd4 Be4 h5 Kd5 c2 Bxf3 Nxf3
 25	+63.07!	1.53G	0:16.10	Nf6+!
 25	+62.46!	1.53G	0:16.10	Nf6+!
 25	+61.88!	1.53G	0:16.08	Nf6+!
 25	+61.32!	1.52G	0:16.07	Nf6+!
 25	+60.81?	1.47G	0:15.54	Nf6+ Kg7?
 25	+61.04?	1.46G	0:15.38	Nf6+ Kg7?
 25	+61.46?	1.46G	0:15.37	Nf6+ Kg7?
 25	+61.90?	1.46G	0:15.37	Nf6+ Kg7?
 25	+62.15?	1.46G	0:15.37	Nf6+ Kg7?
 25	+62.78?	1.46G	0:15.36	Nf6+ Kg7?
 24	+63.25 	1.46G	0:15.35	Nf6+ Kg7 Nh5+ Kg6 Bc2+ Kxh5 d8=Q Kg4 Qf6 Kxg3 Qe5+ Kf2 Qh2+ Ke1 Qg1+ Ke2 Qg2+ Ke1 Ke5 c4 Qg1+ Ke2 Kd5 Nc7+ Kxc4 Kf3 Qf1+ Kg3 Qe2 Bc5 Kxc5 Kf4 Qc4+ Kg3 Qxc3 Kf2 Qf6+ Kg3 Qe5+ Kf2 Bd1 Ke1 Qxe3+ Kxd1
 24	+54.09!	1.41G	0:14.83	Nf6+!
 24	+35.15!	1.40G	0:14.79	Nf6+!
 24	+5.73?	1.36G	0:14.29	Nf6+ Kg7?
 24	+52.53!	1.34G	0:14.08	Nf6+!
 24	+42.90!	1.30G	0:13.74	Nf6+!
 24	+35.21!	1.28G	0:13.49	Nf6+!
 24	+29.06!	1.27G	0:13.45	Nf6+!
 24	+24.16!	1.27G	0:13.40	Nf6+!
 24	+20.25!	1.26G	0:13.34	Nf6+!
 24	+17.13!	1.25G	0:13.27	Nf6+!
 24	+14.65!	1.24G	0:13.16	Nf6+!
 24	+12.68!	1.23G	0:13.03	Nf6+!
 24	+11.11!	1.22G	0:12.93	Nf6+!
 24	+9.86!	1.21G	0:12.84	Nf6+!
 24	+8.88!	1.19G	0:12.63	Nf6+!
 24	+8.11!	1.17G	0:12.41	Nf6+!
 24	+7.50!	1.11G	0:11.89	Nf6+!
 24	+7.02!	1.07G	0:11.56	Nf6+!
 24	+6.65!	996.7M	0:10.80	Nf6+!
 24	+6.08!	931.0M	0:10.16	Nf6+!
 24	+5.98!	885.6M	0:09.71	Nf6+!
 24	+5.90!	837.8M	0:09.23	Nf6+!
 24	+5.84!	794.4M	0:08.79	Nf6+!
 24	+5.80!	743.2M	0:08.27	Nf6+!
 24	+5.76?	723.1M	0:08.07	Nf6+ Kg7?
 23	+5.80 	718.7M	0:08.02	Nf6+ Kg7 Nh5+ Kg6 Bc2+ Kxh5 d8=Q Kg4 Qf6 Ba5 Qf4+ Kh3 Qf1+ Kxg3 Qxa6 Bb6 Qe2 c4 Qe1+ Kf3 Qf1+ Kg3 Qg1+ Kf4 Qh2+ Kf3 Bd1+ Ke4 Qh1+ Kf5 Qd5+ Kf6 Qe5+ Kg6 Bc2+ Kh5 Kc6 Ba7 Qf4 Ne6 Qf7+ Kg4 Qxe6+ Kg3 Qg6+ Kf2 Qf7+ Ke1
 23	+5.62!	681.9M	0:07.65	Nf6+!
 23	+5.34!	637.7M	0:07.19	Nf6+!
 23	+4.89!	623.8M	0:07.05	Nf6+!
 23	+4.81!	533.0M	0:06.11	Nf6+!
 23	+4.76!	514.8M	0:05.92	Nf6+!
 23	+4.71!	468.7M	0:05.44	Nf6+!
 23	+4.69!	466.2M	0:05.41	Nf6+!
 22	+4.66 	450.0M	0:05.24	Nf6+ Kg7 Nh5+ Kg6 Bc2+ Kxh5 d8=Q Kg4 Qf6 Nf7+ Kd5 Nc7+ Kc6 Ng5 Qf4+ Kh3 Bf5+ Kg2 Kxc7 c2 Qxe3 c1=R Qxc1 Kf2 Qf4+ Ke2 Kb6 Nf3 Bg4 Kd3 Qxf3+ Kd2 Bf5 c4 Qf4+ Kc3 Qe3+ Kb2 Qxh6
 22	+4.49!	420.8M	0:04.93	Nf6+!
 22	+4.21!	359.4M	0:04.27	Nf6+!
 22	+3.76!	306.6M	0:03.70	Nf6+!
 22	+3.68!	284.3M	0:03.46	Nf6+!
 22	+3.62!	266.9M	0:03.27	Nf6+!
 22	+3.58!	245.2M	0:03.03	Nf6+!
 21	+3.53 	226.7M	0:02.83	Nf6+ Kg7 Nh5+ Kg6 Bc2+ Kxh5 d8=Q Kg4 Qf6 Kxg3 Qe5+ Kh3 Qxe3+ Kg2 Qe2+ Kg3 Qxa6 Nf3 Qe2 Nd4 Qe3+ Kg2 Be4+ Kf1 Kd5 h5 Ke5 h4 Bd3+ Kg2 Qg5+ Kf2 Ke4 h3 Qf4+ Kg2 Bf1+ Kh1 Bxh3
 20	+2.13 	116.1M	0:01.55	Nf6+ Kg7 Nh5+ Kg6 Bc2+ Kxh5 d8=Q Kg4 Qf6 Kxg3 Qe5+ Kf2 Qh2+ Ke1 Qg1+ Ke2 Qg2+ Ke1 Ke5 c4 Qh1+ Kf2 Bd1 Bc5 Kd5 c2 Qh2+ Kf1 Qe2+ Kg1 Bxc2 Ba7 Qg4+ Kh1 Qxc4 Nb8 Qf1+ Kh2 Qf4+ Kg2 Qg4+ Kf2 Bd1 Nd7 Qh4+ Kg1 Qg3+ Kf1
 19	 -2.11 	51.7M  	0:00.70	Nxe3 Ba5 Kc6 Bd8 Kb5 Nb8 Bc2+ Kh8 Bf5 Nf7 Kxc5 Bg5 Nc2 Bf6 Bh3 h5 Bf5 Kg7 Kd5 Kh6 Ne3 Kg5 Bh3 Nd8 Kc4 Nbc6 Kb3 Be5 Ng2 Na5+ Kc2
 18	 -2.02 	34.3M  	0:00.46	Kc6 Nb8+ Kc7 Nxd7 Kxd7 Kg7 Nxe3 Kf6 Ng4+ Kf5 Kd6 Ke4 Bc2+ Kf3 Nxh6 Ke3 Kd5 Kd2 Ba4 Nf3 Nf7 c2 Bxc2 Kxc2 Nd6 Kd3 g4 Nd2 g5 c4
 17	 -2.17 	18.4M  	0:00.24	Nxe3 Ba5 Kc6 Bd8 Kb5 Nb8 Bc2+ Kh8 Bf5 Nf7 Kxc5 Bg5 Nc2 Bf6 Kd5 Kg7 g4 Nd8 Kc5 Nbc6 Kc4 Kf7
 16	 -2.16 	15.2M  	0:00.20	Nxe3 Ba5 Kc6 Nb8+ Kb5 Bd8 Bc2+ Kh8 Bf5 Nf7 Kxc5 Bg5 Nc2 Bf6 Kd5 Kg7 g4 Kf8 Nd4 Ke7 d8=B+ Nxd8 Be4 Nd7
 15	 -2.12 	11.4M  	0:00.15	Nxe3 Ba5 Kc6 Nb8+ Kb5 Bd8 Bc2+ Kh8 Bf5 Nf7 Kxc5 Bg5 Nc2 Bf6 Kd5 Nd8 Nd4 Nxd7 Bxd7 Bxd4 Ba4 Bf6
 14	 -2.09 	7.21M  	0:00.10	Nxe3 Ba5 Kc6 Nb8+ Kb5 Bd8 Kxc5 Nxd7+ Kc4 Bf6 Bc2+ Kg7 Nf5+ Kf8 Nxh6 Ne5+ Kxc3 Ng4+ Kd3 Nxh6 Ke3 Kg7
 13	 -2.11 	5.67M  	0:00.08	Nxe3 Ba5 Kc6 Nb8+ Kb5 Bd8 Bc2+ Kg8 Bf5 Nf7 Kxc5 Kf8 Kb4 Bg5 Nc2 Bf6 d8=Q+ Nxd8
 12	 -2.11 	5.13M  	0:00.07	Nxe3 Ba5 Be2 Nb8 Bb5 Nf7+ Kd5 Bd8 Kxc5 Bf6 Kb4 Kg7 Ba4 Kh8 d8=R+ Nxd8 Ka3 Nbc6
 11	 -2.03 	2.85M  	0:00.04	Nxe3 Ba5 Be2 Nb8 Bd3+ Kg7 Nf5+ Kf8 Nxh6 c4 Bb1 Nf3 d8=R+ Bxd8 Kd5 Nd7 Kxc4
 10	 -2.02 	1.70M  	0:00.02	Nxe3 Ba5 Be2 Nb8 Bd3+ Kg8 Bf5 Kg7 Kxc5 Nf7 Kb5
  9	 -2.08 	1.56M  	0:00.02	Nxe3 Ba5 Be2 Nb8 Bd3+ Kg8 Bf5 Nf7+ Kxc5 Kg7 Kb5
  8	  0.00 	189991	0:00.00	Nf6+ Kg7 Nh5+ Kg6 Nf4+ Kg7
  7	  0.00 	132818	0:00.00	Nf6+ Kg7 Nh5+ Kg6 Nf4+ Kg7
  6	  0.00 	118626	0:00.00	Nf6+ Kg7 Nh5+ Kg6 Nf4+ Kg7
  5	  0.00 	111998	0:00.00	Nf6+ Kg7 Nh5+ Kg6 Nf4+ Kg7
  4	+1.93 	55228  	0:00.00	Nf6+ Kg6 Bc2+ Kxf6 d8=Q+ Kg7 Ke7
  3	+2.90 	43127  	0:00.00	Nf6+ Kg6 Bc2+ Kxf6 d8=Q+ Kg7
  2	+3.12 	33520  	0:00.00	Nf6+ Kg6 Bc2+ Kxf6
  1	NNUE evaluation using C:\cluster.mfb\Popcnt-LP\eval\nn-49196287a910.nnue enabled
  1	Found 510 tablebases
  1	+2.30 	19705  	0:00.00	Nf6+ Kg6
Net nn-49196287a910.nnue will be released with 13.1
It does not appear to be stronger than current SF net nn-62ef826d1a6d.nnue
But it's close enough for me and it does have the ability to solve some of these difficult problems with the Black-Diamond code.
Stockfish below is SF-13 ( not cur-dev)

Code: Select all

#########################################################################################################
###                                              Summary                                              ###
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PGN File: c:/cluster.mfb/pgn/04140852.pgn
Time Control: Time Control-> base+inc: 27+0.270
Games: 500
Threads: 1
Hash: 128

Current date : time (EDST)
Date: 04/14/21 : 09:13:01

Projected-> Time: 0h:22m:40s
     Run -> Time: 0h:20m:12s

500 game(s) loaded
Rank Name                          Rating   Δ     +    -     #     Σ    Σ%     W    L    D   W%    =%   OppR
---------------------------------------------------------------------------------------------------------

   1 Stockfish-62ef826d1a6d         3501   0.0    9    9   500  252.0  50.4   25   21  454   5.0  90.8  3499
   2 Oki-Maguro-13.1-49196287a910   3499   2.7    9    9   500  248.0  49.6   21   25  454   4.2  90.8  3501
---------------------------------------------------------------------------------------------------------
LOS:
                              St Ok
Stockfish-62ef826d1a6d           72
Oki-Maguro-13.1-49196287a910  27

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###                                                End                                                ###
#########################################################################################################
Image
Paloma
Posts: 1167
Joined: Thu Dec 25, 2008 9:07 pm
Full name: Herbert L

Re: Can any engine find the winning move here ?

Post by Paloma »

MikeB wrote: Wed Apr 14, 2021 4:12 pm ... snip
and it does now appear that Kg7 may offer stiffer resistance as it delays mate by one move ( Nf6 Kg7 Kh7 Nh5! - now Kg7 leads to shorter mate and Bc2 will mate.
Perhaps this was the reason why van Breukelen delayed publishing it for so long? So technically it's a mate-in-14 ( hopefully I'm correct in saying that since I'm getting old)
After 1...Kg7 it's not mate-in-14 but mate in 32!
2.Nh5+ Kg6 3.Bc2+ Kxh5 4.d8=Q Kg4! 5.Qf6! (# in 28) Kxg3 6.Qe5+ Kf3 7.Bd1+ Kg2 8.Qd5+ Kg1 9.Qc4 (# in24)

[d]8/8/n2K3p/2pQ2n1/1b6/2p1p3/8/3B2k1 w - - 0 9
(after 8.Qd5+ Kg1)
9.Qc4 (# in24)