once labeled one of the most difficult of the world...

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MikeB
Posts: 4889
Joined: Thu Mar 09, 2006 6:34 am
Location: Pen Argyl, Pennsylvania

once labeled one of the most difficult of the world...

Post by MikeB »

http://talkchess.com/forum/viewtopic.ph ... 03&t=61526

[d]4K1k1/8/1p5p/1Pp3b1/8/1P3P2/P1B2P2/8 w - - bm f4;

Code: Select all

dep	score	nodes	time	(not shown:  tbhits	knps	seldep)
 50	+128.26 	59.1G	26:33.55	f4 Bf6 a4 Bc3 f5 Kg7 Ke7 Bf6+ Ke6 Bc3 Bd1 Kf8 f6 Be1 Bh5 Bc3 Bg6 Bb4 Kd7 Ba5 Bh5 Be1 Kc6 Ba5 Kc7 Kg8 f7+ Kf8 f4 Ke7 Kc6 Kf8 f5 Kg7 f6+ Kf8 Kc7 Bc3 Kxb6 Bd4 Kc6 Bxf6 Kxc5 Be5 b6 Ke7 Kc6 Bd4 a5 Bg7 f8=Q+ Kxf8 a6 Ke7 a7 Kf6 a8=Q 
 49	+128.25 	52.3G	23:45.13	f4 Bf6 a4 Bc3 f5 Kg7 Ke7 Bf6+ Ke6 Bc3 Bd1 Kf8 f6 Be1 Bh5 Bc3 Bg6 Bb4 Kd7 Ba5 Bh5 Be1 Kc6 Ba5 Kc7 Kg8 f7+ Kf8 f4 Ke7 Kc6 Kf8 f5 Kg7 f6+ Kf8 Kc7 Bc3 Kxb6 Bd4 Kc6 Bxf6 Kxc5 Be5 b6 Ke7 Kc6 Bg7 f8=Q+ Kxf8 a5 Ke7 a6 Kf6 a7 Kg5 a8=Q 
 48	+128.25 	51.7G	23:28.48	f4 Bf6 a4 Bc3 f5 Kg7 Ke7 Bf6+ Ke6 Bc3 Bd1 Kf8 f6 Be1 Bh5 Bc3 Bg6 Bb4 Kd7 Ba5 Bh5 Be1 Kc6 Ba5 Kc7 Kg8 f7+ Kf8 f4 Ke7 Kc6 Kf8 f5 Kg7 f6+ Kf8 Kc7 Bc3 Kxb6 Bd4 Kc6 Bxf6 Kxc5 Be5 b6 Ke7 Kc6 Bg7 f8=Q+ Kxf8 a5 Ke7 a6 Kf6 a7 Kg5 a8=Q 
 47	+128.25 	51.4G	23:21.33	f4 Bf6 a4 Bc3 f5 Kg7 Ke7 Bf6+ Ke6 Bc3 Bd1 Kf8 f6 Be1 Bh5 Bc3 Bg6 Bb4 Kd7 Ba5 Bh5 Be1 Kc6 Ba5 Kc7 Kg8 f7+ Kf8 f4 Ke7 Kc6 Kf8 f5 Kg7 f6+ Kf8 Kc7 Bc3 Kxb6 Bd4 Kc6 Bxf6 Kxc5 Be5 b6 Ke7 Kc6 Bg7 f8=Q+ Kxf8 a5 Ke7 a6 Kf6 a7 Kg5 a8=Q 
 46	+128.25 	51.3G	23:18.90	f4 Bf6 a4 Bc3 f5 Kg7 Ke7 Bf6+ Ke6 Bc3 Bd1 Kf8 f6 Be1 Bh5 Bc3 Bg6 Bb4 Kd7 Ba5 Bh5 Be1 Kc6 Ba5 Kc7 Kg8 f7+ Kf8 f4 Ke7 Kc6 Kf8 f5 Bc3 Kxb6 Bd4 Kc6 Bf6 Kxc5 Be7+ Kc6 Bf6 b6 Ke7 a5 Bg7 f6+ Kxf6 f8=Q+ Bxf8 b7 Kf5 b8=Q Be7 Qc8+ Ke5  
 45	+128.24 	50.2G	22:50.25	f4 Bf6 a4 Bc3 f5 Kg7 Ke7 Bf6+ Ke6 Bc3 Bd1 Kf8 f6 Ke8 Bh5+ Kf8 Bg6 Bb4 Kd7 Ba5 Kc6 Kg8 Bh5 Kf8 Kc7 Kg8 f7+ Kf8 f4 Kg7 Kc6 Kf8 f5 Ke7 f6+ Kf8 Kc7 Bc3 Kxb6 Bd4 Kc6 Bxf6 Kxc5 Be5 Kc6 Ke7 b6 Bg7 f8=B+ Kxf8 a5 Ke7 a6 Ke6 a7 Ke5 a8= 
 44	+128.17 	48.8G	22:16.29	f4 Bf6 a4 Bc3 f5 Kg7 Ke7 Bf6+ Ke6 Bc3 Bd1 Kf8 f6 Ke8 Bh5+ Kf8 Bg6 Bb4 Kd7 Ba5 Bh5 Be1 Kc6 Ba5 Kc7 Kg8 f7+ Kf8 f4 Kg7 Kc6 Kf8 f5 Ke7 f6+ Kf8 Kc7 Bc3 Kxb6 Bd4 Kc6 Bxf6 Kxc5 Be7+ Kc6 Bg5 a5 Bd2 b6 Ke7 a6 Ke6 f8=Q Ba5 Qd6+ Kf5 Qe 
 43	+128.20 	48.5G	22:07.57	f4 Bf6 a4 Bc3 f5 Kg7 Ke7 Bf6+ Ke6 Bc3 Bd1 Kf8 f6 Ke8 Bh5+ Kf8 Bg6 Bb4 Kd7 Ba5 Bh5 Be1 Kc6 Ba5 Kc7 Kg8 f7+ Kf8 f4 Kg7 Kc6 c4 bxc4 Kf8 f5 Kg7 f6+ Kf8 Kc7 Bc3 Kxb6 Ba5+ Kc6 Bd8 Bg6 Bxf6 Bh5 Bc3 b6 Ke7 a5 Bf6 Bg6 Bg7 f8=Q+ Kxf8 a 
 43	+128.19!	48.4G	22:06.14	f4! 
 43	+128.18!	47.9G	21:52.84	f4! 
 43	+128.10?	47.9G	21:51.68	f4 Bf6? 
 42	+128.18 	47.2G	21:34.56	f4 Bf6 a4 Bc3 f5 Kg7 Ke7 Bf6+ Ke6 Bd8 Kd7 Bg5 Kc7 h5 Kxb6 Be7 Kc6 c4 bxc4 Bb4 Kb6 Kf6 c5 h4 c6 h3 c7 h2 Be4 Ke5 Bh1 Kd4 c8=Q Kd3 Qd7+ Kc3 Qd5 Bf8 Qc6+ Kd3 Qd7+ Kc3 Qc8+ Kd3 Qxf8 Ke2 Qe7+ Kd1 Qd6+ Ke1 Qb4+ Kf1 Qc4+ Kxf2 Qc2+ K 
 42	+98.41!	39.8G	18:46.22	f4! 
 42	+119.02!	35.8G	17:08.17	f4! 
 42	+58.44!	30.8G	14:50.56	f4! 
 42	+23.18?	30.7G	14:48.55	f4 Bxf4? 
 42	+53.15!	27.1G	13:06.98	f4! 
 42	+27.86?	27.1G	13:06.94	f4 Bf6? 
 42	+49.10!	22.2G	10:57.00	f4! 
 42	+29.30!	19.3G	9:39.22	f4! 
 42	+17.79?	19.3G	9:39.19	f4 Bf6? 
 42	+27.69!	19.0G	9:28.76	f4! 
 42	+18.94?	18.1G	9:02.83	f4 Bf6? 
 42	+26.35!	17.8G	8:54.33	f4! 
 42	+19.91!	14.4G	7:13.14	f4! 
 42	+14.78!	12.1G	6:06.38	f4! 
 42	+11.90?	10.8G	5:27.94	f4 Bf6? 
 42	+14.22!	10.5G	5:20.53	f4! 
 42	+11.63!	9.35G	4:45.48	f4! 
 42	+10.27?	8.76G	4:28.29	f4 Bf6? 
 42	+11.35!	7.64G	3:55.65	f4! 
 42	+10.06!	6.06G	3:08.76	f4! 
 42	+9.04!	4.67G	2:27.18	f4! 
 42	+8.25!	3.65G	1:56.03	f4! 
 42	+7.62!	3.06G	1:39.10	f4! 
 42	+7.14!	2.65G	1:26.56	f4! 
 42	+6.75?	2.65G	1:26.41	f4 Bf6? 
 42	+7.08!	2.41G	1:19.24	f4! 
 42	+6.87!	2.17G	1:11.89	f4! 
 42	+6.64?	1.91G	1:04.09	f4 Bxf4? 
 42	+6.72!	1.76G	0:59.10	f4! 
 41	+6.64 	1.39G	0:46.82	f4 Bf6 a4 Bc3 f5 Kg7 Ke7 Bf6+ Ke6 Bc3 Bd1 Kf8 f6 Ke8 Bh5+ Kf8 Bg6 Ba5 Kd6 Bc3 Kc7 Ba5 Kc6 Kg8 Kb7 Kh8 Bh5 Kg8 Kc7 Kf8 Kd6 Be1 Kc6 Ba5 Kc7 Kg8 Kd6 Bb4 Kc6 Be1 Kxb6 Bxf2 Bg6 c4+ Kc6 h5 bxc4 h4 b6 Be3 a5 h3 a6 h2 
 40	+6.64!	1.31G	0:44.37	f4! 
 40	+5.35!	1.06G	0:36.06	f4! 
 40	+4.34!	907.4M	0:31.06	f4! 
 40	+3.54!	816.1M	0:28.07	f4! 
 40	+2.91!	744.4M	0:25.69	f4! 
 40	+2.43!	732.5M	0:25.29	f4! 
 40	+2.06!	503.7M	0:17.44	f4! 
 40	+1.78!	447.0M	0:15.43	f4! 
 40	+1.57!	415.0M	0:14.32	f4! 
 40	+1.41!	383.7M	0:13.24	f4! 
 40	+1.31!	363.1M	0:12.53	f4! 
 40	+1.23!	292.8M	0:10.05	Kd7!
latest dev-SF-McB ( Sept/Oct release) - clean start, 18 threads 8192 hash

although repeatable in SMP mode, it does not find f4 in single thread mode before 5 minutes (depth 50)...
Top
MikeGL
Posts: 1010
Joined: Thu Sep 01, 2011 2:49 pm

Re: once labeled one of the most difficult of the world...

Post by MikeGL »

MikeB wrote:http://talkchess.com/forum/viewtopic.ph ... 03&t=61526

[d]4K1k1/8/1p5p/1Pp3b1/8/1P3P2/P1B2P2/8 w - - bm f4;

Code: Select all

dep	score	nodes	time	(not shown:  tbhits	knps	seldep)
 50	+128.26 	59.1G	26:33.55	f4 Bf6 a4 Bc3 f5 Kg7 Ke7 Bf6+ Ke6 Bc3 Bd1 Kf8 f6 Be1 Bh5 Bc3 Bg6 Bb4 Kd7 Ba5 Bh5 Be1 Kc6 Ba5 Kc7 Kg8 f7+ Kf8 f4 Ke7 Kc6 Kf8 f5 Kg7 f6+ Kf8 Kc7 Bc3 Kxb6 Bd4 Kc6 Bxf6 Kxc5 Be5 b6 Ke7 Kc6 Bd4 a5 Bg7 f8=Q+ Kxf8 a6 Ke7 a7 Kf6 a8=Q 
 49	+128.25 	52.3G	23:45.13	f4 Bf6 a4 Bc3 f5 Kg7 Ke7 Bf6+ Ke6 Bc3 Bd1 Kf8 f6 Be1 Bh5 Bc3 Bg6 Bb4 Kd7 Ba5 Bh5 Be1 Kc6 Ba5 Kc7 Kg8 f7+ Kf8 f4 Ke7 Kc6 Kf8 f5 Kg7 f6+ Kf8 Kc7 Bc3 Kxb6 Bd4 Kc6 Bxf6 Kxc5 Be5 b6 Ke7 Kc6 Bg7 f8=Q+ Kxf8 a5 Ke7 a6 Kf6 a7 Kg5 a8=Q 
 48	+128.25 	51.7G	23:28.48	f4 Bf6 a4 Bc3 f5 Kg7 Ke7 Bf6+ Ke6 Bc3 Bd1 Kf8 f6 Be1 Bh5 Bc3 Bg6 Bb4 Kd7 Ba5 Bh5 Be1 Kc6 Ba5 Kc7 Kg8 f7+ Kf8 f4 Ke7 Kc6 Kf8 f5 Kg7 f6+ Kf8 Kc7 Bc3 Kxb6 Bd4 Kc6 Bxf6 Kxc5 Be5 b6 Ke7 Kc6 Bg7 f8=Q+ Kxf8 a5 Ke7 a6 Kf6 a7 Kg5 a8=Q 
 47	+128.25 	51.4G	23:21.33	f4 Bf6 a4 Bc3 f5 Kg7 Ke7 Bf6+ Ke6 Bc3 Bd1 Kf8 f6 Be1 Bh5 Bc3 Bg6 Bb4 Kd7 Ba5 Bh5 Be1 Kc6 Ba5 Kc7 Kg8 f7+ Kf8 f4 Ke7 Kc6 Kf8 f5 Kg7 f6+ Kf8 Kc7 Bc3 Kxb6 Bd4 Kc6 Bxf6 Kxc5 Be5 b6 Ke7 Kc6 Bg7 f8=Q+ Kxf8 a5 Ke7 a6 Kf6 a7 Kg5 a8=Q 
 46	+128.25 	51.3G	23:18.90	f4 Bf6 a4 Bc3 f5 Kg7 Ke7 Bf6+ Ke6 Bc3 Bd1 Kf8 f6 Be1 Bh5 Bc3 Bg6 Bb4 Kd7 Ba5 Bh5 Be1 Kc6 Ba5 Kc7 Kg8 f7+ Kf8 f4 Ke7 Kc6 Kf8 f5 Bc3 Kxb6 Bd4 Kc6 Bf6 Kxc5 Be7+ Kc6 Bf6 b6 Ke7 a5 Bg7 f6+ Kxf6 f8=Q+ Bxf8 b7 Kf5 b8=Q Be7 Qc8+ Ke5  
 45	+128.24 	50.2G	22:50.25	f4 Bf6 a4 Bc3 f5 Kg7 Ke7 Bf6+ Ke6 Bc3 Bd1 Kf8 f6 Ke8 Bh5+ Kf8 Bg6 Bb4 Kd7 Ba5 Kc6 Kg8 Bh5 Kf8 Kc7 Kg8 f7+ Kf8 f4 Kg7 Kc6 Kf8 f5 Ke7 f6+ Kf8 Kc7 Bc3 Kxb6 Bd4 Kc6 Bxf6 Kxc5 Be5 Kc6 Ke7 b6 Bg7 f8=B+ Kxf8 a5 Ke7 a6 Ke6 a7 Ke5 a8= 
 44	+128.17 	48.8G	22:16.29	f4 Bf6 a4 Bc3 f5 Kg7 Ke7 Bf6+ Ke6 Bc3 Bd1 Kf8 f6 Ke8 Bh5+ Kf8 Bg6 Bb4 Kd7 Ba5 Bh5 Be1 Kc6 Ba5 Kc7 Kg8 f7+ Kf8 f4 Kg7 Kc6 Kf8 f5 Ke7 f6+ Kf8 Kc7 Bc3 Kxb6 Bd4 Kc6 Bxf6 Kxc5 Be7+ Kc6 Bg5 a5 Bd2 b6 Ke7 a6 Ke6 f8=Q Ba5 Qd6+ Kf5 Qe 
 43	+128.20 	48.5G	22:07.57	f4 Bf6 a4 Bc3 f5 Kg7 Ke7 Bf6+ Ke6 Bc3 Bd1 Kf8 f6 Ke8 Bh5+ Kf8 Bg6 Bb4 Kd7 Ba5 Bh5 Be1 Kc6 Ba5 Kc7 Kg8 f7+ Kf8 f4 Kg7 Kc6 c4 bxc4 Kf8 f5 Kg7 f6+ Kf8 Kc7 Bc3 Kxb6 Ba5+ Kc6 Bd8 Bg6 Bxf6 Bh5 Bc3 b6 Ke7 a5 Bf6 Bg6 Bg7 f8=Q+ Kxf8 a 
 43	+128.19!	48.4G	22:06.14	f4! 
 43	+128.18!	47.9G	21:52.84	f4! 
 43	+128.10?	47.9G	21:51.68	f4 Bf6? 
 42	+128.18 	47.2G	21:34.56	f4 Bf6 a4 Bc3 f5 Kg7 Ke7 Bf6+ Ke6 Bd8 Kd7 Bg5 Kc7 h5 Kxb6 Be7 Kc6 c4 bxc4 Bb4 Kb6 Kf6 c5 h4 c6 h3 c7 h2 Be4 Ke5 Bh1 Kd4 c8=Q Kd3 Qd7+ Kc3 Qd5 Bf8 Qc6+ Kd3 Qd7+ Kc3 Qc8+ Kd3 Qxf8 Ke2 Qe7+ Kd1 Qd6+ Ke1 Qb4+ Kf1 Qc4+ Kxf2 Qc2+ K 
 42	+98.41!	39.8G	18:46.22	f4! 
 42	+119.02!	35.8G	17:08.17	f4! 
 42	+58.44!	30.8G	14:50.56	f4! 
 42	+23.18?	30.7G	14:48.55	f4 Bxf4? 
 42	+53.15!	27.1G	13:06.98	f4! 
 42	+27.86?	27.1G	13:06.94	f4 Bf6? 

latest dev-SF-McB ( Sept/Oct release) - clean start, 18 threads 8192 hash

although repeatable in SMP mode, it does not find f4 in single thread mode before 5 minutes (depth 50)...[/quote]

Maybe a position which is forced mate in #35 or less.
The final position of McBrain pv is a mate in  6

[pgn][Event "Computer chess game"]
[Site "Talkchess"]
[Date "2017.07.20"]
[Round "?"]
[White "McBrain_2017"]
[Black "McBrain_2017"]
[Result "1-0"]
[TimeControl "0+2"]
[SetUp "1"]
[FEN "4K1k1/8/1p5p/1Pp3b1/8/1P3P2/P1B2P2/8 w - - 0 1"]
[Termination "unterminated"]
[PlyCount "57"]
[WhiteType "human"]
[BlackType "human"]

1. f4 Bf6 2. a4 Bc3 3. f5 Kg7 4. Ke7 Bf6+ 5. Ke6 Bc3 6. Bd1 Kf8 7. f6 Be1
8. Bh5 Bc3 9. Bg6 Bb4 10. Kd7 Ba5 11. Bh5 Be1 12. Kc6 Ba5 13. Kc7 Kg8 14.
f7+ Kf8 15. f4 Ke7 16. Kc6 Kf8 17. f5 Kg7 18. f6+ Kf8 19. Kc7 Bc3 20. Kxb6
Bd4 21. Kc6 Bxf6 22. Kxc5 Be5 23. b6 Ke7 24. Kc6 Bd4 25. a5 Bg7 26. f8=Q+
Kxf8 27. a6 Ke7 28. a7 Kf6 29. a8=Q {#M6 29. ... Kg5 30.Qg8 Kf4 31.Qxg7 Ke3
32.Kd5 Kf2 33.Kd4 Kf1 34.Ke3 Ke1 35.Qa1# 1-0}
[/pgn]

I tried to improve black defences but it seems the above line of McBrain is
 already optimum for black.  So maybe a Mate in #35 or could be less.

regards
Top
Rodolfo Leoni
Posts: 545
Joined: Tue Jun 06, 2017 4:49 pm
Location: Italy

Re: once labeled one of the most difficult of the world...

Post by Rodolfo Leoni »

MikeB wrote:http://talkchess.com/forum/viewtopic.ph ... 03&t=61526

[d]4K1k1/8/1p5p/1Pp3b1/8/1P3P2/P1B2P2/8 w - - bm f4;

Code: Select all

dep	score	nodes	time	(not shown:  tbhits	knps	seldep)
 50	+128.26 	59.1G	26:33.55	f4 Bf6 a4 Bc3 f5 Kg7 Ke7 Bf6+ Ke6 Bc3 Bd1 Kf8 f6 Be1 Bh5 Bc3 Bg6 Bb4 Kd7 Ba5 Bh5 Be1 Kc6 Ba5 Kc7 Kg8 f7+ Kf8 f4 Ke7 Kc6 Kf8 f5 Kg7 f6+ Kf8 Kc7 Bc3 Kxb6 Bd4 Kc6 Bxf6 Kxc5 Be5 b6 Ke7 Kc6 Bd4 a5 Bg7 f8=Q+ Kxf8 a6 Ke7 a7 Kf6 a8=Q 
 49	+128.25 	52.3G	23:45.13	f4 Bf6 a4 Bc3 f5 Kg7 Ke7 Bf6+ Ke6 Bc3 Bd1 Kf8 f6 Be1 Bh5 Bc3 Bg6 Bb4 Kd7 Ba5 Bh5 Be1 Kc6 Ba5 Kc7 Kg8 f7+ Kf8 f4 Ke7 Kc6 Kf8 f5 Kg7 f6+ Kf8 Kc7 Bc3 Kxb6 Bd4 Kc6 Bxf6 Kxc5 Be5 b6 Ke7 Kc6 Bg7 f8=Q+ Kxf8 a5 Ke7 a6 Kf6 a7 Kg5 a8=Q 
 48	+128.25 	51.7G	23:28.48	f4 Bf6 a4 Bc3 f5 Kg7 Ke7 Bf6+ Ke6 Bc3 Bd1 Kf8 f6 Be1 Bh5 Bc3 Bg6 Bb4 Kd7 Ba5 Bh5 Be1 Kc6 Ba5 Kc7 Kg8 f7+ Kf8 f4 Ke7 Kc6 Kf8 f5 Kg7 f6+ Kf8 Kc7 Bc3 Kxb6 Bd4 Kc6 Bxf6 Kxc5 Be5 b6 Ke7 Kc6 Bg7 f8=Q+ Kxf8 a5 Ke7 a6 Kf6 a7 Kg5 a8=Q 
 47	+128.25 	51.4G	23:21.33	f4 Bf6 a4 Bc3 f5 Kg7 Ke7 Bf6+ Ke6 Bc3 Bd1 Kf8 f6 Be1 Bh5 Bc3 Bg6 Bb4 Kd7 Ba5 Bh5 Be1 Kc6 Ba5 Kc7 Kg8 f7+ Kf8 f4 Ke7 Kc6 Kf8 f5 Kg7 f6+ Kf8 Kc7 Bc3 Kxb6 Bd4 Kc6 Bxf6 Kxc5 Be5 b6 Ke7 Kc6 Bg7 f8=Q+ Kxf8 a5 Ke7 a6 Kf6 a7 Kg5 a8=Q 
 46	+128.25 	51.3G	23:18.90	f4 Bf6 a4 Bc3 f5 Kg7 Ke7 Bf6+ Ke6 Bc3 Bd1 Kf8 f6 Be1 Bh5 Bc3 Bg6 Bb4 Kd7 Ba5 Bh5 Be1 Kc6 Ba5 Kc7 Kg8 f7+ Kf8 f4 Ke7 Kc6 Kf8 f5 Bc3 Kxb6 Bd4 Kc6 Bf6 Kxc5 Be7+ Kc6 Bf6 b6 Ke7 a5 Bg7 f6+ Kxf6 f8=Q+ Bxf8 b7 Kf5 b8=Q Be7 Qc8+ Ke5  
 45	+128.24 	50.2G	22:50.25	f4 Bf6 a4 Bc3 f5 Kg7 Ke7 Bf6+ Ke6 Bc3 Bd1 Kf8 f6 Ke8 Bh5+ Kf8 Bg6 Bb4 Kd7 Ba5 Kc6 Kg8 Bh5 Kf8 Kc7 Kg8 f7+ Kf8 f4 Kg7 Kc6 Kf8 f5 Ke7 f6+ Kf8 Kc7 Bc3 Kxb6 Bd4 Kc6 Bxf6 Kxc5 Be5 Kc6 Ke7 b6 Bg7 f8=B+ Kxf8 a5 Ke7 a6 Ke6 a7 Ke5 a8= 
 44	+128.17 	48.8G	22:16.29	f4 Bf6 a4 Bc3 f5 Kg7 Ke7 Bf6+ Ke6 Bc3 Bd1 Kf8 f6 Ke8 Bh5+ Kf8 Bg6 Bb4 Kd7 Ba5 Bh5 Be1 Kc6 Ba5 Kc7 Kg8 f7+ Kf8 f4 Kg7 Kc6 Kf8 f5 Ke7 f6+ Kf8 Kc7 Bc3 Kxb6 Bd4 Kc6 Bxf6 Kxc5 Be7+ Kc6 Bg5 a5 Bd2 b6 Ke7 a6 Ke6 f8=Q Ba5 Qd6+ Kf5 Qe 
 43	+128.20 	48.5G	22:07.57	f4 Bf6 a4 Bc3 f5 Kg7 Ke7 Bf6+ Ke6 Bc3 Bd1 Kf8 f6 Ke8 Bh5+ Kf8 Bg6 Bb4 Kd7 Ba5 Bh5 Be1 Kc6 Ba5 Kc7 Kg8 f7+ Kf8 f4 Kg7 Kc6 c4 bxc4 Kf8 f5 Kg7 f6+ Kf8 Kc7 Bc3 Kxb6 Ba5+ Kc6 Bd8 Bg6 Bxf6 Bh5 Bc3 b6 Ke7 a5 Bf6 Bg6 Bg7 f8=Q+ Kxf8 a 
 43	+128.19!	48.4G	22:06.14	f4! 
 43	+128.18!	47.9G	21:52.84	f4! 
 43	+128.10?	47.9G	21:51.68	f4 Bf6? 
 42	+128.18 	47.2G	21:34.56	f4 Bf6 a4 Bc3 f5 Kg7 Ke7 Bf6+ Ke6 Bd8 Kd7 Bg5 Kc7 h5 Kxb6 Be7 Kc6 c4 bxc4 Bb4 Kb6 Kf6 c5 h4 c6 h3 c7 h2 Be4 Ke5 Bh1 Kd4 c8=Q Kd3 Qd7+ Kc3 Qd5 Bf8 Qc6+ Kd3 Qd7+ Kc3 Qc8+ Kd3 Qxf8 Ke2 Qe7+ Kd1 Qd6+ Ke1 Qb4+ Kf1 Qc4+ Kxf2 Qc2+ K 
 42	+98.41!	39.8G	18:46.22	f4! 
 42	+119.02!	35.8G	17:08.17	f4! 
 42	+58.44!	30.8G	14:50.56	f4! 
 42	+23.18?	30.7G	14:48.55	f4 Bxf4? 
 42	+53.15!	27.1G	13:06.98	f4! 
 42	+27.86?	27.1G	13:06.94	f4 Bf6? 
 42	+49.10!	22.2G	10:57.00	f4! 
 42	+29.30!	19.3G	9:39.22	f4! 
 42	+17.79?	19.3G	9:39.19	f4 Bf6? 
 42	+27.69!	19.0G	9:28.76	f4! 
 42	+18.94?	18.1G	9:02.83	f4 Bf6? 
 42	+26.35!	17.8G	8:54.33	f4! 
 42	+19.91!	14.4G	7:13.14	f4! 
 42	+14.78!	12.1G	6:06.38	f4! 
 42	+11.90?	10.8G	5:27.94	f4 Bf6? 
 42	+14.22!	10.5G	5:20.53	f4! 
 42	+11.63!	9.35G	4:45.48	f4! 
 42	+10.27?	8.76G	4:28.29	f4 Bf6? 
 42	+11.35!	7.64G	3:55.65	f4! 
 42	+10.06!	6.06G	3:08.76	f4! 
 42	+9.04!	4.67G	2:27.18	f4! 
 42	+8.25!	3.65G	1:56.03	f4! 
 42	+7.62!	3.06G	1:39.10	f4! 
 42	+7.14!	2.65G	1:26.56	f4! 
 42	+6.75?	2.65G	1:26.41	f4 Bf6? 
 42	+7.08!	2.41G	1:19.24	f4! 
 42	+6.87!	2.17G	1:11.89	f4! 
 42	+6.64?	1.91G	1:04.09	f4 Bxf4? 
 42	+6.72!	1.76G	0:59.10	f4! 
 41	+6.64 	1.39G	0:46.82	f4 Bf6 a4 Bc3 f5 Kg7 Ke7 Bf6+ Ke6 Bc3 Bd1 Kf8 f6 Ke8 Bh5+ Kf8 Bg6 Ba5 Kd6 Bc3 Kc7 Ba5 Kc6 Kg8 Kb7 Kh8 Bh5 Kg8 Kc7 Kf8 Kd6 Be1 Kc6 Ba5 Kc7 Kg8 Kd6 Bb4 Kc6 Be1 Kxb6 Bxf2 Bg6 c4+ Kc6 h5 bxc4 h4 b6 Be3 a5 h3 a6 h2 
 40	+6.64!	1.31G	0:44.37	f4! 
 40	+5.35!	1.06G	0:36.06	f4! 
 40	+4.34!	907.4M	0:31.06	f4! 
 40	+3.54!	816.1M	0:28.07	f4! 
 40	+2.91!	744.4M	0:25.69	f4! 
 40	+2.43!	732.5M	0:25.29	f4! 
 40	+2.06!	503.7M	0:17.44	f4! 
 40	+1.78!	447.0M	0:15.43	f4! 
 40	+1.57!	415.0M	0:14.32	f4! 
 40	+1.41!	383.7M	0:13.24	f4! 
 40	+1.31!	363.1M	0:12.53	f4! 
 40	+1.23!	292.8M	0:10.05	Kd7!
latest dev-SF-McB ( Sept/Oct release) - clean start, 18 threads 8192 hash

although repeatable in SMP mode, it does not find f4 in single thread mode before 5 minutes (depth 50)...
Looks great! :)
Latest McBrain can't find 1.f4. If I make that move it needs depth 45 to have a fail high.
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peter
Posts: 3186
Joined: Sat Feb 16, 2008 7:38 am
Full name: Peter Martan

Re: once labeled one of the most difficult of the world...

Post by peter »

Hi Rodolfo!
Rodolfo Leoni wrote:Latest McBrain can't find 1.f4. If I make that move it needs depth 45 to have a fail high.
Try Tactical8 (which means 8 mulitprimary variants, as far as I know):


252: Salai,L - 10MV Eret90,C, 1st Prize, Sachova skladba
4K1k1/8/1p5p/1Pp3b1/8/1P3P2/P1B2P2/8 w - - 0 1

Analysis by SF-McBrain 2.6 64 POPCNT:

1.Kd7 Ld2 2.Kc6 La5 3.a4 Kf7 4.Le4
+/- (1.36) Tiefe: 7/8 00:00:00 68kN
...
1.Ld3 Ld2 2.Ke7 h5 3.Kf6 Kf8 4.Kf5 Ke7 5.Le4 Kf7 6.a4 Ke7 7.Lc6 Kf7 8.f4 h4 9.Lg2 Le1 10.Kg5 Lxf2 11.a5 bxa5 12.b6
+/- (1.14) Tiefe: 19/34 00:00:08 25455kN
1.Ld1 Ld2 2.Kd7 Le1 3.Kc6 La5 4.f4 Kf7 5.Lh5+ Kf6 6.Lg4 Kg6 7.Kd6 Kf6 8.a3 Le1 9.Kc6 Lxf2 10.a4 Le3 11.Ld1 Kf5 12.Kxb6 c4+ 13.Kc6 cxb3 14.Lxb3
+/- (1.24) Tiefe: 20/34 00:00:08 26517kN
...
1.Ld1 Ld2 2.Kd7 Kh7 3.Kc7 La5 4.f4 Kg6 5.Lg4 h5 6.Le2 Kf5 7.Lxh5 Kxf4 8.a3 Ke5 9.Kc6 Ke6 10.Lf3 Kf5 11.Ld5 Ke5 12.Lg2 Kf5 13.Lh1 Kf4 14.Kd6 Lc3 15.Ld5 Kf5 16.Kc7
+/- (1.22) Tiefe: 24/37 00:00:12 62726kN
...
1.Lf5 Ld2 2.Kd7 Kf7 3.Lg4 Kg7 4.Kc6 La5 5.f4 Kg6 6.Kc7 h5 7.Lf3 h4 8.Lg4 Kg7 9.Lh3 Kg6 10.Kd6 Le1 11.Ke7 Lc3 12.f5+ Kg7 13.Ke6 Ld4 14.Lf1 Lxf2 15.a4 Le1
+/- (1.42) Tiefe: 26/40 00:00:15 132MN
1.f4 Lxf4 2.Kd7 Ld2 3.Kc6 La5 4.b4 cxb4 5.Lb3+ Kg7 6.Kd5 Kf6 7.Ke4 h5 8.Kf4 Kg6 9.Ke5 h4 10.Kf4 h3 11.Kg3 Kg5 12.f3 h2 13.Kxh2 Kf4 14.Kg2 Ke5 15.Kg3 Kd6 16.f4 Kc5 17.f5 Kd6 18.f6 Kd7 19.Kg4 Kd8 20.Kf5 Ke8 21.Kg5
+- (1.73) Tiefe: 26/47 00:00:16 147MN
...
1.f4 Lxf4 2.Kd7 Le5 3.Kc6 Ld4 4.Kxb6 c4+ 5.Kb7 c3 6.a4 h5 7.a5 h4 8.a6 h3 9.a7 Lxa7 10.Kxa7 h2 11.b6 h1D 12.b7 Dc1 13.b8D+ Kf7 14.Dc7+ Kf8 15.Dd6+ Kg7 16.Dg6+ Kf8 17.Df6+ Kg8 18.Dxc3 Da3+ 19.Kb7 De7+ 20.Dc7 Df6 21.f4
+- (6.30) Tiefe: 33/63 00:01:08 1880MN

BTW 1.Bd1 is a correct solution too as for the first move, it's a Major Dual of the study, which is it's only pity, not even for my pov but yet for nowaday's study- juries probably.


24threads of a 12x2,67GHz Intel- CPU, 32G hash started empty
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peter
Posts: 3186
Joined: Sat Feb 16, 2008 7:38 am
Full name: Peter Martan

Re: once labeled one of the most difficult of the world...

Post by peter »

Hi Mike!
MikeGL wrote:Maybe a position which is forced mate in #35 or less.
I have #30 stored in my private study- database:

[pgn]
[Event "1st Prize, Sachova skladba "]
[Site "?"]
[Date "?"]
[Round "?"]
[White "Salai, Ladislav jr."]
[Black "10MV Eret90, Major Dual 1.Bd1"]
[Result "1-0"]
[SetUp "1"]
[FEN "4K1k1/8/1p5p/1Pp3b1/8/1P3P2/P1B2P2/8 w - - 0 1"]
[PlyCount "59"]
[EventDate "2013.??.??"]

1. f4 Bxf4 2. Kd7 Bd2 3. Kc6 Ba5 4. b4 cxb4 5. Bb3+ Kg7 6. Kd5 Kf6 7. Ke4 h5 8.
Kf4 Kg6 9. Ke5 h4 10. Kf4 Kh5 11. f3 h3 12. Kg3 Kg5 13. Kxh3 Kf4 14. Kg2 Ke3
15. Kg3 Kd4 16. f4 Kc5 17. f5 Kxb5 18. f6 Kc6 19. f7 b5 20. f8=Q Bc7+ 21. Kg4
Bh2 22. Qe8+ Kb6 23. Qg6+ Ka5 24. Qc6 Bg1 25. Kf3 Ba7 26. Ke4 Bf2 27. Kd3 Be1
28. Bc4 bxc4+ 29. Kxc4 b3 30. Qb5# 1-0
[/pgn]
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Rodolfo Leoni
Posts: 545
Joined: Tue Jun 06, 2017 4:49 pm
Location: Italy

Re: once labeled one of the most difficult of the world...

Post by Rodolfo Leoni »

peter wrote:Hi Rodolfo!

Try Tactical8 (which means 8 mulitprimary variants, as far as I know):
Hi Peter. :)

This feature looks interesting. I'll try it on evening.

What's the difference with MultiPV 8?

Rodolfo
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MikeB
Posts: 4889
Joined: Thu Mar 09, 2006 6:34 am
Location: Pen Argyl, Pennsylvania

Re: once labeled one of the most difficult of the world...

Post by MikeB »

Rodolfo Leoni wrote:
peter wrote:Hi Rodolfo!

Try Tactical8 (which means 8 mulitprimary variants, as far as I know):
Hi Peter. :)

This feature looks interesting. I'll try it on evening.

What's the difference with MultiPV 8?

Rodolfo
MulitiPv 8 provides a pv for the best 8 moves, consequently it widens the search on those 8 moves and on some positions it will find a solution quicker , but it been proven that it does cost ELO. Tactical uses the multipv function to widen the search , but to continue just to provide one pv. Off the top of my head , I believe I use something like 2^t , where t is the tactical setting , so tactical one use multipv = 2 in the background , tactical 2 uses multipv = 4 in the background - so tactical 8 would search every move sufficiently to give a pv for every move - so in cases where pruning prevents SF from ever free finding the correct move , tactical 8 will usually find the correct move eventually - sometimes it is much faster , other times much slower , but it's clearly weaker in normal chess play.

Now with latest dev-SF-McB, I'm not using any of these MulitiPv tricks -but in have tiny parcels of code from the matefinder option to the normal play option. Dev-SF-McB now solves many many positions that SF will never solve with the current code and it plays equal to SF as long as the time control is longer than 6 min with 3.6 sec increment . SF is designed on a testing platform where only the patches that pass a rigorous 10 sec game , 0.1 second increment prelim test is it tested at what they call the long time control test of 60 sec game with 0.6 sec increment . By and large ,this testing system works and it works pretty damn well, but the patches to limit pruning on selective conditions almost always fail at stc and never even make it to the LTC testing and most would probably also fail at LTC since their LTC testing is nothing more than 1 minute bullet games. So I think what the SF team is doing is great - very scientific and statistical oriented and the results are in the pudding - the process works. That's leaves it to others , like those who created matefinder , suGar , Sting and others to come with something that is just a little different , but perhaps a little more satisfying from a user perspective and not the almighty ELO . Both K and Houdini do this very well and because of that there will be room at the top for a few engines that have different styles. For me personally, the way Stockfish testing has developed is a great thing for computer chess - the bar is constantly getting raised - the open source aspect , the numerous people who have submitted patches and computer time - we're talking a collective effort invoking hundreds of people - volunteers who are contributing. This is a pretty cool thing and it's the only reason why McBrain , Matefinder, suGar and Sting even exist. So kudos to all those who contribute and volunteer to the SF effort.
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peter
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Full name: Peter Martan

Re: once labeled one of the most difficult of the world...

Post by peter »

Thanks for explaining and thanks for your engine, Michael
:!:
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MikeGL
Posts: 1010
Joined: Thu Sep 01, 2011 2:49 pm

Re: once labeled one of the most difficult of the world...

Post by MikeGL »

peter wrote:Hi Mike!
MikeGL wrote:Maybe a position which is forced mate in #35 or less.
I have #30 stored in my private study- database:

[pgn]
[Event "1st Prize, Sachova skladba "]
[Site "?"]
[Date "?"]
[Round "?"]
[White "Salai, Ladislav jr."]
[Black "10MV Eret90, Major Dual 1.Bd1"]
[Result "1-0"]
[SetUp "1"]
[FEN "4K1k1/8/1p5p/1Pp3b1/8/1P3P2/P1B2P2/8 w - - 0 1"]
[PlyCount "59"]
[EventDate "2013.??.??"]

1. f4 Bxf4 2. Kd7 Bd2 3. Kc6 Ba5 4. b4 cxb4 5. Bb3+ Kg7 6. Kd5 Kf6 7. Ke4 h5 8.
Kf4 Kg6 9. Ke5 h4 10. Kf4 Kh5 11. f3 h3 12. Kg3 Kg5 13. Kxh3 Kf4 14. Kg2 Ke3
15. Kg3 Kd4 16. f4 Kc5 17. f5 Kxb5 18. f6 Kc6 19. f7 b5 20. f8=Q Bc7+ 21. Kg4
Bh2 22. Qe8+ Kb6 23. Qg6+ Ka5 24. Qc6 Bg1 25. Kf3 Ba7 26. Ke4 Bf2 27. Kd3 Be1
28. Bc4 bxc4+ 29. Kxc4 b3 30. Qb5# 1-0
[/pgn]
Hi Peter,
Thanks for this details and Mate in #30 solution.

Hi Michael,
Thanks for updates on your SF/McBrain.

regards
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BBauer
Posts: 658
Joined: Wed Mar 08, 2006 8:58 pm

Re: once labeled one of the most difficult of the world...

Post by BBauer »

My first try with my modified SF

Code: Select all

FEN: 4K1k1/8/1p5p/1Pp3b1/8/1P3P2/P1B2P2/8 w - - 0 1

St-mod-17-07-07:
Found 510 tablebases
 1/1	00:00	 46	15k	+1,04	a2-a4
 2/2	00:00	 557	139k	+1,01	Bc2-g6 Bg5-f4
 3/3	00:00	 660	165k	+0,97	a2-a4 Kg8-g7 Ke8-d7
 4/4	00:00	 2k	397k	+1,81	Ke8-d7 Bg5-h4 Kd7-c6 Bh4xf2 Kc6xb6
 5/5	00:00	 4k	614k	+1,38	Ke8-d7 h6-h5 Kd7-c7 h5-h4 Kc7xb6 h4-h3
 6/6	00:00	 7k	769k	+1,55	a2-a4 Bg5-d2 Ke8-d7 Bd2-a5 Kd7-c6 h6-h5
 7/7	00:00	 8k	907k	+1,57	a2-a4 Bg5-d2 Ke8-d7 Bd2-a5 f3-f4 h6-h5 Kd7-c6
 8/8	00:00	 16k	1.115k	+1,36	a2-a4 Bg5-d2 Ke8-d7 Bd2-a5 f3-f4 Kg8-f7 Kd7-c6 h6-h5
 9/10	00:00	 21k	1.285k	+1,33	a2-a4 Bg5-d2 Ke8-d7 h6-h5 Kd7-c6 Bd2-a5 Bc2-g6 h5-h4 Bg6-f5 Kg8-f7
 10/13	00:00	 50k	1.620k	+1,22	Ke8-d7 h6-h5 f3-f4 Bg5xf4 Kd7-c6 h5-h4 Bc2-f5 Kg8-g7 Kc6xb6 Kg7-f6
 11/15	00:00	 63k	1.692k	+1,26	Ke8-d7 Bg5-d2 Kd7-c6 Bd2-a5 f3-f4 Kg8-f7 Bc2-d1 Kf7-g6 Bd1-g4 h6-h5 Bg4-c8 h5-h4
 12/15	00:00	 96k	1.918k	+1,27	Ke8-d7 Bg5-d2 Kd7-c6 Bd2-a5 Bc2-d1 Kg8-f7 f3-f4 Kf7-f6 Bd1-g4 h6-h5 Bg4-c8 Kf6-e7 a2-a4
 13/17	00:00	 145k	2.191k	+1,25	Ke8-d7 Bg5-d2 Kd7-c6 Bd2-a5 Bc2-d1 Kg8-f7 f3-f4 Kf7-f6 Bd1-g4 Kf6-f7 a2-a4 Kf7-g6 Bg4-d7 Kg6-f7 Bd7-h3 Kf7-f6
 14/18	00:00	 210k	2.185k	+1,20	Ke8-d7 Bg5-d2 Kd7-c6 Bd2-a5 Bc2-d1 Kg8-f7 f3-f4 Kf7-f6 Bd1-g4 Kf6-f7 Kc6-d6 Kf7-f6 Kd6-d5 h6-h5 Bg4-c8 Kf6-f7 Kd5-e5 h5-h4
 15/20	00:00	 319k	2.248k	+1,16	Ke8-d7 Bg5-d2 Kd7-c6 Bd2-a5 Bc2-d1 Kg8-g7 f3-f4 Kg7-f7 Bd1-g4 Kf7-g6 a2-a4 Kg6-f7 Bg4-f5 Kf7-f6 Bf5-e4 Kf6-f7 Be4-f3
 16/21	00:00	 508k	2.397k	+1,16	Ke8-d7 Bg5-d2 Kd7-c6 Bd2-a5 Bc2-d1 Kg8-g7 f3-f4 Kg7-f7 Bd1-g4 Kf7-g6 a2-a4 Kg6-f6 Kc6-d6 Ba5-c3 f2-f3 Bc3-a5 Kd6-c6 Kf6-f7 Bg4-f5
 17/22	00:00	 581k	2.226k	+1,16	Ke8-d7 Bg5-d2 Kd7-c6 Bd2-a5 Bc2-d1 Kg8-g7 f3-f4 Kg7-f7 a2-a4 Kf7-g6 Bd1-g4 h6-h5 f4-f5+ Kg6-g5 f5-f6 Kg5xf6 Bg4xh5 Kf6-g5 Bh5-f3 Kg5-f5 Kc6-d6 Kf5-f4 Bf3-c6
 18/28	00:00	 1.154k	1.288k	+1,09	Ke8-d7 Bg5-d2 Kd7-c6 Bd2-a5 Bc2-d1 Kg8-g7 f3-f4 Kg7-f7 a2-a4 Kf7-g6 Bd1-g4 Kg6-f6 Kc6-c7 Kf6-g6 Kc7-b7 h6-h5 f4-f5+ Kg6-f6 Bg4xh5 Kf6xf5 Bh5-e8 Kf5-e4
 19/28	00:00	 1.293k	1.376k	+1,09	Ke8-d7 Bg5-d2 Kd7-c6 Bd2-a5 Bc2-d1 Kg8-g7 f3-f4 Kg7-f6 Bd1-g4 Kf6-g6 a2-a4 Kg6-f6 Kc6-c7 Kf6-g6 Kc7-b7 h6-h5 f4-f5+ Kg6-g5 f5-f6 Kg5xf6 Bg4xh5 Kf6-e5 Kb7-c6 Ke5-f4
 20/28	00:01	 1.596k	1.485k	+1,09	Ke8-d7 Bg5-d2 Kd7-c6 Bd2-a5 Bc2-d1 Kg8-g7 f3-f4 Kg7-f6 Bd1-g4 Kf6-g6 a2-a4 Kg6-f6 Kc6-c7 Kf6-g6 Kc7-b7 h6-h5 f4-f5+ Kg6-f6 Bg4xh5 Kf6xf5 Bh5-f3 Kf5-f4 Bf3-c6 Kf4-e5 Bc6-g2
 21/28	00:01	 3.231k	1.774k	+1,31	Bc2-d1 Bg5-d2 Ke8-d7 Kg8-g7 f3-f4 Kg7-f6 Kd7-c6 Bd2-a5 Bd1-g4 Kf6-g6 a2-a3 h6-h5 Bg4-f3 Kg6-h6 Bf3-e2 h5-h4 Be2-g4 Kh6-g6 Kc6-c7 Kg6-f6 a3-a4 Kf6-g6 Kc7-c6 Kg6-f6 Bg4-h3 Kf6-g7
 22/28	00:02	 3.788k	1.842k	+1,31	Bc2-d1 Bg5-d2 Ke8-d7 Kg8-g7 f3-f4 Kg7-f6 Kd7-c6 Bd2-a5 Bd1-g4 Kf6-g6 a2-a3 h6-h5 Bg4-f3 Kg6-h6 Bf3-e2 h5-h4 Be2-g4 Kh6-g6 Kc6-c7 Kg6-f6 a3-a4 Kf6-f7 Kc7-c6 Kf7-g6 Bg4-h3 Kg6-f6
 23/28	00:02	 4.995k	1.926k	+1,31	Bc2-d1 Bg5-d2 Ke8-d7 Kg8-g7 f3-f4 Kg7-f6 Kd7-c6 Bd2-a5 Bd1-g4 Kf6-g6 a2-a3 h6-h5 Bg4-f3 Kg6-h6 Bf3-e2 h5-h4 Be2-g4 Kh6-g6 Kc6-c7 Kg6-f6 a3-a4 Kf6-f7 Kc7-c6 Kf7-g6 Bg4-d7 Kg6-f6 Kc6-c7
 24/29	00:02	 5.546k	1.981k	+1,31	Bc2-d1 Bg5-d2 Ke8-d7 Kg8-g7 f3-f4 Kg7-f6 Kd7-c6 Bd2-a5 Bd1-g4 Kf6-g7 a2-a3 Kg7-f6 Kc6-c7 Kf6-g6 Kc7-b7 h6-h5 Bg4-f3 h5-h4 Bf3-g4 Kg6-f7 Kb7-c6 Kf7-g6 Kc6-c7 Kg6-f6 a3-a4 Kf6-e7 Bg4-f5 Ke7-f6 Bf5-h3
 25/29	00:03	 6.741k	2.090k	+1,31	Bc2-d1 Bg5-d2 Ke8-d7 Kg8-g7 f3-f4 Kg7-f6 Kd7-c6 Bd2-a5 Bd1-g4 Kf6-g7 a2-a3 Kg7-f6 Kc6-c7 Kf6-g6 Kc7-b7 h6-h5 Bg4-f3 h5-h4 Bf3-g4 Kg6-f7 Kb7-c6 Kf7-g6 Kc6-c7 Kg6-f6 a3-a4 Kf6-e7 Kc7-c6 Ke7-f7
 26/29	00:03	 8.191k	2.068k	+1,31	Bc2-d1 Bg5-d2 Ke8-d7 Kg8-g7 f3-f4 Kg7-f6 Kd7-c6 Bd2-a5 Bd1-g4 Kf6-g7 a2-a3 Kg7-f6 Kc6-c7 Kf6-g6 Kc7-b7 h6-h5 Bg4-f3 h5-h4 Bf3-g4 Kg6-f7 Kb7-c6 Kf7-g6 Kc6-c7 Kg6-f6 a3-a4 Kf6-e7 Bg4-c8 Ke7-f6 Kc7-c6
 27/32	00:04	 10.713k	2.147k	+1,31	Bc2-d1 Bg5-d2 Ke8-d7 Kg8-g7 f3-f4 Kg7-f6 Kd7-c6 Bd2-a5 Bd1-g4 Kf6-g7 a2-a3 Kg7-g6 Kc6-c7 h6-h5 Bg4-f3 h5-h4 Bf3-g4 Kg6-f6 a3-a4 Kf6-e7 Kc7-c6 Ke7-f7 Kc6-d7 Ba5-d2 Kd7-c7 Bd2-a5 Bg4-h3 Kf7-g6 Kc7-c6 Kg6-f6
 28/33	00:05	 13.017k	2.179k	+1,31	Bc2-d1 Bg5-d2 Ke8-d7 Kg8-g7 f3-f4 Kg7-f6 Kd7-c6 Bd2-a5 Bd1-g4 Kf6-g6 a2-a3 h6-h5 Bg4-f3 h5-h4 Bf3-g4 Kg6-f6 a3-a4 Kf6-f7 Bg4-c8 Kf7-f6 Kc6-c7 Kf6-g6 Bc8-h3 Kg6-f7 Bh3-d7 Kf7-e7 Bd7-f5 Ke7-f6 Bf5-g4 Kf6-e7 Bg4-c8
 29/33	00:10	 25.489k	2.392k	+1,29	Bc2-d1 Bg5-d2 Ke8-d7 h6-h5 f3-f4 h5-h4 Bd1-g4 Kg8-f7 Kd7-c6 Bd2-a5 a2-a3 Kf7-g6 Bg4-c8 Kg6-f6 a3-a4 Kf6-f7 Bc8-g4 Kf7-e7 Kc6-c7 Ke7-f6 Bg4-h3 Kf6-f7 Bh3-d7 Kf7-e7 Bd7-c8 Ke7-f7 Kc7-c6 Kf7-f6 Kc6-b7 Kf6-g6 Bc8-d7
 30/33	00:11	 28.009k	2.447k	+1,29	Bc2-d1 Bg5-d2 Ke8-d7 h6-h5 f3-f4 h5-h4 Bd1-g4 Kg8-f7 Kd7-c6 Bd2-a5 a2-a4 Kf7-f6 Bg4-h3 Kf6-e7 Bh3-f5 Ke7-f6 Bf5-d7 Kf6-e7 Bd7-h3 Ke7-f6 Bh3-g4 Kf6-f7 Kc6-c7 Kf7-e7 Bg4-f5 Ke7-f6 Bf5-d7 Kf6-e7 Bd7-g4 Ke7-f7 Bg4-h3 Kf7-f6 Bh3-c8
 31/34	00:13	 35.045k	2.550k	+1,29	Bc2-d1 Bg5-d2 Ke8-d7 h6-h5 f3-f4 h5-h4 Bd1-g4 Kg8-f8 Kd7-c6 Bd2-a5 Kc6-b7 Kf8-g7 Bg4-d7 Kg7-f7 Kb7-c6 Kf7-e7 Bd7-h3 Ke7-f7 Kc6-c7 Kf7-e7 a2-a3 Ke7-f6 Bh3-d7 Kf6-f7 Bd7-g4 Kf7-f6 Kc7-c6 Kf6-g6 b3-b4 Ba5xb4 f4-f5+ Kg6-g5 a3xb4 c5xb4
 32/34	00:15	 38.929k	2.568k	+1,29	Bc2-d1 Bg5-d2 Ke8-d7 h6-h5 f3-f4 h5-h4 Bd1-g4 Kg8-f8 Kd7-c6 Bd2-a5 Kc6-b7 Kf8-g7 Bg4-d7 Kg7-f7 Kb7-c6 Kf7-g7 Kc6-c7 Kg7-f6 Bd7-g4 Kf6-f7 Bg4-c8 Kf7-f6 Kc7-c6 Kf6-e7 Bc8-h3 Ke7-f7 Bh3-f5 Kf7-e7 Kc6-c7 Ke7-f6 Bf5-c8 Kf6-g7 Bc8-h3 Kg7-f7
 33/35	00:17	 45.159k	2.601k	+1,29	Bc2-d1 Bg5-d2 Ke8-d7 h6-h5 f3-f4 h5-h4 Bd1-g4 Kg8-f8 Kd7-c6 Bd2-a5 Kc6-b7 Kf8-g7 Bg4-f5 Kg7-f6 Bf5-c8 Kf6-g6 Bc8-d7 Kg6-h5 Kb7-c6 Kh5-g6 Kc6-c7 Kg6-f6 Bd7-h3 Kf6-f7 Bh3-g4 Kf7-g6 Kc7-c6 Kg6-f6 Bg4-c8 Kf6-f7 Bc8-f5 Kf7-g7 Kc6-c7 Kg7-f6 Bf5-d7
 34/37	00:24	 68.968k	2.766k	+1,29	Bc2-d1 Bg5-d2 Ke8-d7 h6-h5 f3-f4 h5-h4 Bd1-g4 Kg8-f7 Kd7-c6 Bd2-a5 Kc6-b7 Kf7-g7 Bg4-c8 Kg7-f6 Kb7-c7 Kf6-f7 Bc8-h3 Kf7-f6 Bh3-g4 Kf6-f7 Kc7-c6 Kf7-f6 Bg4-h3 Kf6-e7 Bh3-c8 Ke7-f7 Bc8-d7 Kf7-g7 Kc6-b7 Kg7-f7 Bd7-h3 Kf7-f6 Kb7-c7 Kf6-f7 Bh3-d7 Kf7-f6
 35/38	00:26	 74.490k	2.793k	+1,29	Bc2-d1 Bg5-d2 Ke8-d7 h6-h5 f3-f4 h5-h4 Bd1-g4 Kg8-f7 Kd7-c6 Bd2-a5 Kc6-b7 Kf7-g7 Bg4-d7 Kg7-f7 Kb7-c7 Kf7-f6 Bd7-c8 Kf6-f7 Bc8-g4 Kf7-g8 Bg4-d7 Kg8-f7 a2-a3 Kf7-f8 Bd7-c8 Kf8-f7 Bc8-h3 Kf7-e7 Bh3-g4 Ke7-f6 Kc7-c6 Kf6-e7 b3-b4 Ba5xb4 a3xb4 c5-c4 Kc6-d5
 36/39	00:28	 80.138k	2.817k	+1,29	Bc2-d1 Bg5-d2 Ke8-d7 h6-h5 f3-f4 h5-h4 Bd1-g4 Kg8-f7 Kd7-c6 Bd2-a5 Kc6-b7 Kf7-g7 Bg4-d7 Kg7-f7 Kb7-c7 Kf7-f6 Bd7-c8 Kf6-f7 Kc7-c6 Kf7-e7 Bc8-h3 Ke7-f6 Kc6-c7 Kf6-f7 Bh3-g4 Kf7-f6 Bg4-d7 Kf6-f7 Kc7-c6 Kf7-g7 Bd7-f5 Kg7-f6 Bf5-h3 Kf6-e7 Bh3-c8 Ke7-f8 Kc6-b7 Kf8-f7
 37/40	00:41	 118.751k	2.846k	+1,26	Bc2-d1 Bg5-d2 Ke8-d7 h6-h5 f3-f4 h5-h4 Bd1-g4 Kg8-f7 Kd7-c6 Bd2-a5 Kc6-b7 Kf7-g7 Bg4-d7 Kg7-f7 Kb7-c6 Kf7-g7 Bd7-h3 Kg7-f6 Kc6-b7 Kf6-f7 Kb7-c7 Kf7-f6 Bh3-c8 Kf6-f7 Bc8-d7 Kf7-f6 Bd7-h3 Kf6-f7 Bh3-c8 Kf7-f6 Bc8-d7 Kf6-f7 Bd7-g4 Kf7-f6 a2-a3 Kf6-f7 Bg4-h3 Kf7-f6 Kc7-c6 Kf6-f7
 38/40	00:45	 132.117k	2.879k	+1,26	Bc2-d1 Bg5-d2 Ke8-d7 h6-h5 f3-f4 h5-h4 Bd1-g4 Kg8-f7 Kd7-c6 Bd2-a5 Bg4-h3 Kf7-e7 Bh3-f5 Ke7-f6 Bf5-d7 Kf6-f7 Bd7-g4 Kf7-g8 Bg4-h3 Kg8-g7 Kc6-c7 Kg7-f7 Bh3-g4 Kf7-f6 Bg4-c8 Kf6-f7 Kc7-c6 Kf7-f8 Kc6-b7 Kf8-f7 Bc8-g4 Kf7-g7 a2-a4 Kg7-f7 Kb7-c6 Kf7-f6 Bg4-c8 Kf6-e7 Kc6-c7 Ke7-f7
 39/42	00:49	 141.223k	2.845k	+1,26	Bc2-d1 Bg5-d2 Ke8-d7 h6-h5 f3-f4 h5-h4 Bd1-g4 Kg8-f7 Kd7-c6 Bd2-a5 Bg4-h3 Kf7-e7 Bh3-f5 Ke7-f6 Bf5-d7 Kf6-f7 Bd7-g4 Kf7-f8 Kc6-c7 Kf8-f7 a2-a3 Kf7-f6 Bg4-c8 Kf6-f7 Kc7-c6 Kf7-f6 Bc8-g4 Kf6-e7 a3-a4 Ke7-e8 Bg4-h3 Ke8-e7 Bh3-c8 Ke7-f6 Bc8-d7 Kf6-e7 Bd7-h3 Ke7-f6 Bh3-g4 Kf6-f7 Bg4-h3 Kf7-g6
 40/42	00:57	 163.709k	2.839k	+1,26	Bc2-d1 Bg5-d2 Ke8-d7 h6-h5 f3-f4 h5-h4 Bd1-g4 Kg8-f7 Kd7-c6 Bd2-a5 Bg4-h3 Kf7-e7 Bh3-f5 Ke7-f6 Bf5-d7 Kf6-f7 Bd7-g4 Kf7-f8 Kc6-c7 Kf8-f7 a2-a3 Kf7-f6 Bg4-c8 Kf6-f7 Kc7-c6 Kf7-f6 Bc8-g4 Kf6-e7 a3-a4 Ke7-f6 Bg4-h3 Kf6-e7 Bh3-f5 Ke7-f6 Bf5-c8 Kf6-e7 Kc6-c7 Ke7-f6 Bc8-h3 Kf6-e7 Kc7-c6 Ke7-f7 Bh3-d7
 41/43	01:03	 180.134k	2.828k	+1,26	Bc2-d1 Bg5-d2 Ke8-d7 h6-h5 f3-f4 h5-h4 Bd1-g4 Kg8-f7 Kd7-c6 Bd2-a5 Bg4-h3 Kf7-e7 Bh3-f5 Ke7-f6 Bf5-d7 Kf6-f7 Bd7-g4 Kf7-f8 Kc6-c7 Kf8-f7 Bg4-f5 Kf7-f6 Bf5-c8 Kf6-f7 a2-a3 Kf7-f6 Bc8-h3 Kf6-e7 Kc7-b7 Ke7-f6 f2-f3 Kf6-e7 Kb7-c7 Ke7-f6 Kc7-c6 Kf6-e7 f4-f5 Ke7-f6 b3-b4 Ba5xb4 a3xb4 c5xb4 Kc6xb6
 42/44	01:15	 210.106k	2.765k	+1,26	Bc2-d1 Bg5-d2 Ke8-d7 h6-h5 f3-f4 h5-h4 Bd1-g4 Kg8-f7 Kd7-c6 Bd2-a5 Bg4-h3 Kf7-e7 Bh3-f5 Ke7-f6 Bf5-d7 Kf6-f7 Bd7-g4 Kf7-f8 Kc6-c7 Kf8-f7 Bg4-f5 Kf7-f6 Bf5-c8 Kf6-f7 a2-a3 Kf7-f6 Bc8-h3 Kf6-e7 Kc7-b7 Ke7-f6 Bh3-g4 Kf6-e7 Kb7-c6 Ke7-f6 Bg4-c8 Kf6-f7 Bc8-d7 Kf7-f6 a3-a4 Kf6-e7 Bd7-c8 Ke7-f6 Bc8-g4 Kf6-f7
 43/45	01:25	 231.397k	2.715k	+1,26	Bc2-d1 Bg5-d2 Ke8-d7 h6-h5 f3-f4 h5-h4 Bd1-g4 Kg8-f7 Kd7-c6 Bd2-a5 Bg4-h3 Kf7-e7 Bh3-f5 Ke7-f6 Bf5-d7 Kf6-f7 Bd7-g4 Kf7-f8 Kc6-c7 Kf8-f7 Bg4-f5 Kf7-f6 Bf5-c8 Kf6-f7 a2-a3 Kf7-f6 Bc8-h3 Kf6-e7 Kc7-b7 Ke7-f6 Bh3-g4 Kf6-e7 Kb7-c7 Ke7-f7 Bg4-f5 Kf7-f6 Bf5-d7 Kf6-f7 Kc7-c6 Kf7-f6 Bd7-c8 Kf6-f7 Bc8-g4 Kf7-g6 Kc6-b7
 44/46	01:37	 256.094k	2.620k	+1,26	Bc2-d1 Bg5-d2 Ke8-d7 h6-h5 f3-f4 h5-h4 Bd1-g4 Kg8-f7 Kd7-c6 Bd2-a5 Bg4-h3 Kf7-e7 Bh3-f5 Ke7-f6 Bf5-d7 Kf6-f7 Bd7-g4 Kf7-f8 Kc6-c7 Kf8-f7 Bg4-f5 Kf7-f6 Bf5-c8 Kf6-f7 a2-a3 Kf7-f6 Bc8-h3 Kf6-e7 Kc7-b7 Ke7-f6 Bh3-g4 Kf6-f7 Kb7-c7 Kf7-f6 a3-a4 Kf6-e7 Bg4-c8 Ke7-f6 Kc7-c6 Kf6-e7 Bc8-h3 Ke7-f7 Bh3-g4 Kf7-f6 Bg4-d7 Kf6-g6
 45/47	02:07	 322.143k	2.532k	+1,26	Bc2-d1 Bg5-d2 Ke8-d7 h6-h5 f3-f4 h5-h4 Bd1-g4 Kg8-f7 Kd7-c6 Bd2-a5 Bg4-h3 Kf7-e7 Bh3-f5 Ke7-f6 Bf5-d7 Kf6-f7 Bd7-g4 Kf7-f8 Kc6-c7 Kf8-f7 Bg4-f5 Kf7-f6 Bf5-c8 Kf6-f7 a2-a3 Kf7-f6 Bc8-h3 Kf6-e7 Kc7-b7 Ke7-f6 Kb7-c6 Kf6-f7 Bh3-g4 Kf7-f6 Bg4-d7 Kf6-f7 Kc6-b7 Kf7-e7 Bd7-f5 Ke7-f6 Bf5-h3 Kf6-f7 Kb7-c6 Kf7-f6 Bh3-g4 Kf6-f7 b3-b4
 46/49	02:42	 400.730k	2.463k	+1,26	Bc2-d1 Bg5-d2 Ke8-d7 h6-h5 f3-f4 h5-h4 Bd1-g4 Kg8-f7 Kd7-c6 Bd2-a5 Bg4-h3 Kf7-e7 Bh3-f5 Ke7-f6 Bf5-d7 Kf6-f7 Bd7-g4 Kf7-f8 Kc6-c7 Kf8-f7 Bg4-f5 Kf7-f6 Bf5-c8 Kf6-f7 a2-a3 Kf7-f6 Bc8-h3 Kf6-e7 Kc7-b7 Ke7-f6 Kb7-c6 Kf6-f7 Bh3-g4 Kf7-f6 Bg4-d7 Kf6-f7 Bd7-h3 Kf7-e7 Bh3-c8 Ke7-f7 Bc8-f5 Kf7-f6 Bf5-g4 Kf6-f7 b3-b4 Ba5xb4 a3xb4 c5xb4 Kc6xb6
 47/49	03:08	 444.989k	2.355k	+1,26	Bc2-d1 Bg5-d2 Ke8-d7 h6-h5 f3-f4 h5-h4 Bd1-g4 Kg8-f7 Kd7-c6 Bd2-a5 Bg4-h3 Kf7-e7 Bh3-f5 Ke7-f6 Bf5-d7 Kf6-f7 Bd7-g4 Kf7-f8 Kc6-c7 Kf8-f7 Bg4-f5 Kf7-f6 Bf5-c8 Kf6-f7 a2-a3 Kf7-f6 Bc8-h3 Kf6-e7 Bh3-g4 Ke7-f7 Kc7-b7 Kf7-e7 Bg4-h3 Ke7-f6 Bh3-c8 Kf6-e7 Kb7-c6 Ke7-f6 f2-f3 Kf6-f7 Bc8-d7 Kf7-e7 Bd7-f5 Ke7-f7 Bf5-c8 Kf7-g6 Bc8-g4 Kg6-f6 Bg4-h3
 48/57+	04:27	 620.604k	2.321k	+1,33	f3-f4
 48/57+	04:42	 655.662k	2.321k	+1,41	f3-f4
 48/57+	10:45	 1.630.267k	2.526k	+5,45	f3-f4
 48/57-	10:52	 1.649.128k	2.528k	+4,62	f3-f4 Bg5xf4
 48/57+	12:13	 1.885.003k	2.569k	+5,68	f3-f4
 48/68	21:56	 3.642.566k	2.767k	+10,33	f3-f4
StartNullMove was set to 24.
This was computet on an AMD latop 1024 hash, 4 threads.
Kind regards Bernhard
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