13 hard test positions July 2016

[MikeB]

13)
2 possible winning moves here : Qxd2! or Ng4!, hard for Stockfish.
[d]r4rk1/pb3pp1/1p1qpR2/2ppN3/3P4/2P4P/PP1pQ1P1/3R2K1 w - - 0 19

Really not easy to say, which is better.
That's after some Forward- Backward of both lines in 2 MV and depth 38:

r4rk1/pb3pp1/1p1qpR2/2ppN3/3P4/2P4P/PP1pQ1P1/3R2K1 w - - 0 1

Analysis by Stockfish 240716 64 POPCNT:

1. +- (3.28): 1.Qxd2 Ba6 2.Ng4 Rfc8 3.Qg5 Kf8 4.Rf2 Rc7 5.Qg6 cxd4 6.cxd4 Rb8 7.Qh7 Ke8 8.Qxg7 Kd7 9.Rxf7+ Kc8 10.Nf6 Qd8 11.Rxc7+ Qxc7 12.Qg8+ Kb7 13.Qxe6 Rf8 14.Nxd5 Qf7 15.Qxf7+ Rxf7 16.Nc3 Kc7 17.g4 Kd6 18.Kg2 Bb7+ 19.d5 Bc8 20.Kg3 Rg7 21.Nb5+ Ke5 22.Rc1 a6 23.Rxc8 axb5 24.h4 Kxd5 25.h5

2. +- (2.27): 1.Ng4 Rfc8 2.Qxd2 Kf8 3.Rxf7+ Kxf7 4.Rf1+ Ke8 5.Qg5 Ba6 6.Qh5+ Kd7 7.Ne5+ Kc7 8.Rf7+ Kb8 9.Nd7+ Kc7 10.Nxc5+ Kc6 11.Nxa6 b5 12.Qe2 Kb6 13.Nc5 Rc7 14.Rxc7 Qxc7 15.Qxe6+ Qc6 16.Qf7 a5 17.Qxg7 Qc7 18.Qf6+ Qc6 19.Qe7 Qc7 20.Nd7+ Ka7 21.Qe6 Rd8 22.Nc5 Rd6 23.Qe5 b4 24.cxb4 axb4 25.g4 Rc6 26.Qe3 Qg7 27.Kg2 Rh6 28.a3 Rh7 29.axb4 Qf6 30.g5 Qf5 31.Qa3+ Kb8

The soon to be released McBrain 2.6

Code: Select all

dep	score	nodes	time	(not shown:  tbhits	knps	seldep)
 35	+2.84 	7.36G	5:25.02	Ng4 cxd4 Rdf1 Qc5 Nh6+ Kh7 Qd3+ Kh8 Nxf7+ Kg8 b4 Rxf7 bxc5 gxf6 cxd4 bxc5 Qxd2 cxd4 Qh6 Ba6 Rf4 Rg7 Qxf6 Re8 Rxd4 Bb5 Qe5 Bc6 Rd3 Bd7 Rg3 Rxg3 Qxg3+ Kf7 Qf2+ Ke7 Qc5+ Kd8 Kf2 Re7 Qxa7 Bc6 Qc5 Kd7 Ke3 Re8 g4 e5 
 35	+2.70!	6.16G	4:32.76	Ng4! 
 35	+2.54!	5.24G	3:52.35	Ng4! 
 35	+2.43!	4.97G	3:40.41	Ng4! 
 35	+2.36?	4.67G	3:27.78	Ng4 cxd4? 
 34	+2.43 	4.57G	3:23.23	Ng4 Rfc8 Qxd2 Kf8 Rxf7+ Kxf7 Rf1+ Ke8 Qg5 Ba6 Qh5+ Kd7 Ne5+ Kc7 Rf7+ Kb8 Rd7 Qxd7 Nxd7+ Kb7 Qf7 Rc7 Qxe6 Bb5 Ne5 Rac8 Qxd5+ Bc6 Nxc6 Rxc6 dxc5 bxc5 g4 c4 h4 Rc7 g5 Kc8 h5 Rb6 Qa8+ Kd7 Qg2 Rbb7 Qd5+ Ke7 Qe5+ Kf7 Kg2 Re7 Qd5+ Kf8  
 34	+2.11!	3.88G	2:53.73	Ng4! 
 34	+1.63!	2.52G	1:54.04	Ng4! 
 34	+1.26!	2.02G	1:31.90	Ng4! 
 34	+0.97!	1.85G	1:24.46	Ng4! 
 34	+0.85?	1.53G	1:10.41	Rxd2 Qd8? 
 34	+1.01?	1.34G	1:01.78	Rxd2 Qd8? 
 34	+1.12?	1.34G	1:01.70	Rxd2 Qd8? 
 34	+1.19!	1.33G	1:01.34	Rxd2! 
 33	+1.12 	1.22G	0:56.08	Rxd2 Qd8 Rf4 Qg5 Rg4 Qh6 dxc5 f6 Nd7 f5 Nxf8 fxg4 Qxe6+ Qxe6 Nxe6 g3 c6 Bxc6 Nd4 Re8 Re2 Rxe2 Nxe2 Kf7 Nxg3 Ke6 Ne2 Ke5 Nd4 Bd7 Kf2 Ke4 Ke2 Kf4 a3 Ke4 h4 Kf4 Kf2 a5 g3+ Kg4 b3 g5 hxg5 Kxg5 
 33	+1.07!	1.11G	0:51.11	Rxd2! 
 33	+1.05!	1.04G	0:47.78	Rxd2! 
 33	+0.98!	957.8M	0:44.25	Rxd2! 
 32	+0.91 	920.6M	0:42.52	Rxd2 Qd8 Rf4 Qg5 Rg4 Qh6 dxc5 bxc5 Qf2 f6 Ng6 Rfe8 Nf4 e5 Nxd5 Kf7 Ra4 Red8 Rh4 Qg5 Rg4 Qh6 Ne3 g6 Rxd8 Rxd8 Rh4 Qg7 Qe2 Bc8 Qc4+ Be6 Qxc5 Rd7 Ra4 Qf8 Qxf8+ Kxf8 Ra6 Kf7 b3 f5 c4 
 31	+0.90 	895.3M	0:41.34	Rxd2 Qd8 Rf4 Qg5 Rg4 Qh6 dxc5 bxc5 Qf2 f6 Ng6 Rfe8 Nf4 e5 Nxd5 Kf7 Ra4 Red8 Rh4 Qg5 Rg4 Qh6 Ne3 g6 Rxd8 Rxd8 Ra4 a6 Ng4 Qc1+ Kh2 Qg5 Qxc5 Qd2 Ne3 Qd6 Qxd6 Rxd6 Rb4 Bd5 Nxd5 
 31	+1.02!	894.1M	0:41.29	Rxd2! 
 31	+0.91?	869.2M	0:40.12	Rxd2 Qd8? 
 31	+1.01!	812.4M	0:37.53	Rxd2! 
 31	+0.93?	802.7M	0:37.08	Rxd2 Qe7? 
 30	+1.01 	782.7M	0:36.16	Rxd2 Qe7 Rf4 Qg5 Rg4 Qh6 dxc5 bxc5 Qf2 f6 Ng6 Rfe8 Nf4 e5 Nxd5 Kf7 Ra4 Qg5 Rd1 Qh5 Ne3 Bc8 Rd5 Be6 Rxc5 Re7 Raa5 Kg8 Nd5 Bxd5 Rxd5 Qh6 Rd1 e4 Rc5 Rf7 Ra5 e3 Qf1 

[MikeB]

Thanks for this puzzle compilation.

I haven't checked with other engines but critter1.6 32bit seems to solve
one of these difficult puzzles in less than 10 seconds on my old machine.


[d] 4rb2/1p1q1ppk/p1n1p2p/2p1Pn2/3PNR2/2P2K2/P2QBP2/6R1 w - - bm Rxf5;


1.Rxf5
first run found it in 3 seconds.
second run 11 seconds.
third run in 5 seconds.

critter 1.6 32bit
OS 32bit, dual core, hash 256MB

Yes, a lot of engines solve this quickly, mainly Stockfish has trouble here.

soon to be released SF-McBrain 2.6 (current dev-SF is also just as fast on my machine)

Code: Select all

dep	score	nodes	time	(not shown:  tbhits	knps	seldep)
 33	+7.56 	3.50G	2:23.16	Rxf5 Nxd4+ cxd4 exf5 Qxh6+ Kxh6 Rh1+ Kg6 Kf4 Qc6 d5 fxe4 dxc6 Rxe5 Kxe5 bxc6 Bh5+ Kg5 Bxf7 e3 fxe3 Kg4 Bc4 Be7 Rg1+ Kf3 Rxg7 Bd8 Bxa6 Ba5 Kd6 Bb4 Kxc6 Ba3 Kd5 Kf2 Rf7+ Kg3 Rf4 Bb2 Kxc5 Bc3 Rg4+ Kf2 Bb7 Ke2 Kc4 Bf6 Rg6 Bh4 Rg2+ K 
 33	+7.52!	3.26G	2:13.58	Rxf5! 
 33	+7.41!	2.48G	1:42.92	Rxf5! 
 33	+7.34!	2.13G	1:29.41	Rxf5! 
 32	+7.27 	1.86G	1:18.68	Rxf5 Nxd4+ cxd4 exf5 Qxh6+ Kxh6 Rh1+ Kg6 Kf4 Qc6 d5 fxe4 dxc6 Rxe5 Kxe5 bxc6 Bh5+ Kg5 Bxf7 e3 fxe3 Kg4 Bc4 Be7 Rg1+ Kf3 Rxg7 Bd8 Bxa6 Ba5 Kd6 Bb4 Kxc6 Ba3 Kd5 Bb2 Rb7 Ba3 Rb3 Bc1 Be2+ Kf2 Kxc5 Kg3 Bd3 Kf2 Rb7 Kf3 Rb6 Ba3+ Kd4 Be 
 31	+7.23 	1.72G	1:13.00	Rxf5 Nxd4+ cxd4 exf5 Qxh6+ Kxh6 Rh1+ Kg6 Kf4 Qc6 d5 fxe4 dxc6 Rxe5 Kxe5 bxc6 Bh5+ Kh6 Bxf7+ Kg5 Rg1+ Kh4 Kxe4 Kh3 Be6+ Kh2 Rg5 a5 Bd7 c4 Bxc6 g6 Kd4 Kh3 Kxc4 Kh4 Rxg6 Be7 Bf3 Bb4 Rg2 Bd2 Rg7 Bb4 Rg6 Bd2 Kc5 a4 Kb5 
 31	+7.18!	1.62G	1:09.36	Rxf5! 
 31	+7.06?	1.58G	1:07.71	Rxf5 Nxd4+? 
 31	+7.08?	1.57G	1:07.32	Rxf5 Nxd4+? 
 31	+7.16!	1.57G	1:07.32	Rxf5! 
 30	+7.08 	1.48G	1:03.90	Rxf5 Kh8 Rh5 Nxe5+ dxe5 Qxd2 Nxd2 Rd8 Ne4 g6 Rh3 Rd5 Nd6 Bxd6 exd6 Rxd6 Rxh6+ Kg7 Rgh1 Rd2 Rh8 Kf6 R1h7 Ke7 Rb8 Rd7 Ke3 c4 f4 Kd6 Bf3 Ke7 Rxb7 Rxb7 Bxb7 
 30	+7.07!	1.23G	0:53.94	Rxf5! 
 30	+6.84?	1.17G	0:51.48	Rxf5 Nxd4+? 
 30	+7.02!	1.17G	0:51.37	Rxf5! 
 30	+6.77?	1.17G	0:51.31	Rxf5 Nxd4+? 
 30	+6.87?	1.16G	0:51.13	Rxf5 Nxd4+? 
 30	+7.01!	1.16G	0:50.74	Rxf5! 
 29	+6.93 	1.05G	0:46.36	Rxf5 Kh8 Rh5 Nxe5+ dxe5 Qxd2 Nxd2 g6 Ne4 Bg7 Rhh1 Bxe5 Rxh6+ Kg7 Rh5 f5 Ke3 Kf7 Rhg5 c4 Bxc4 Re7 Nd2 Bxc3 Rxg6 b5 Bd3 Ke8 f4 Kd8 Nf3 Kc7 Nd4 
 29	+6.77!	885.8M	0:39.83	Rxf5! 
 29	+6.54?	849.1M	0:38.34	Rxf5 Nxd4+? 
 29	+6.72!	848.1M	0:38.30	Rxf5! 
 29	+6.59?	819.3M	0:37.11	Rxf5 Nxd4+? 
 29	+6.69!	819.1M	0:37.10	Rxf5! 
 29	+6.58!	762.7M	0:34.78	Rxf5! 
 29	+6.51!	739.9M	0:33.82	Rxf5! 
 28	+6.43!	682.7M	0:31.38	Rxf5! 
 28	+6.27!	644.9M	0:29.80	Rxf5! 
 28	+6.16!	619.5M	0:28.72	Rxf5! 
 28	+6.09!	604.7M	0:28.10	Rxf5! 
 27	+6.02 	553.4M	0:25.96	Rxf5 Nxd4+ cxd4 exf5 Qxh6+ Kxh6 Rh1+ Kg6 Kf4 Qc6 d5 fxe4 dxc6 Rxe5 Kxe5 bxc6 Bh5+ Kg5 Bxf7 e3 fxe3 Kg4 Bc4 a5 Rg1+ Kh4 Be6 Kh5 Kf5 Kh4 Bf7 Kh3 Rg6 Kh4 e4 Kh3 e5 Kh2 Rxc6 Kh3 e6 Kg2 Rc7 
 27	+5.94!	542.1M	0:25.46	Rxf5! 
 27	+5.83!	531.4M	0:24.97	Rxf5! 
 27	+5.76!	530.5M	0:24.93	Rxf5! 
 26	+5.68 	526.9M	0:24.78	Rxf5 Nxd4+ cxd4 exf5 Qxh6+ Kxh6 Rh1+ Kg6 Kf4 Qc6 d5 fxe4 dxc6 Rxe5 Kxe5 bxc6 Bh5+ Kg5 Bxf7 e3 fxe3 Kg4 Bc4 a5 Rg1+ Kh4 Be6 Kh5 Kf5 Kh4 Bf7 a4 Rg6 Kh3 e4 Kh2 e5 c4 
 26	+5.76?	520.4M	0:24.48	Rxf5 Nxd4+? 
 26	+5.87?	520.3M	0:24.48	Rxf5 Nxd4+? 
 26	+5.95?	520.2M	0:24.47	Rxf5 Nxd4+? 
 25	+6.02 	520.1M	0:24.47	Rxf5 Nxd4+ cxd4 exf5 Qxh6+ Kxh6 Rh1+ Kg6 Kf4 Qc6 d5 fxe4 dxc6 Rxe5 Kxe5 bxc6 Bh5+ Kg5 Bxf7 e3 fxe3 Kg4 Bc4 a5 Rg1+ Kh4 Be6 c4 Rg4+ Kh5 Rxc4 a4 Rxa4 Bc5 e4 Bf2 Ra6 Bg3+ Kd4 Bf2+ Kc4 c5 Ra7 Kg6 Rc7 Be3 
 25	+4.97!	483.7M	0:22.78	Rxf5! 
 25	+3.33!	426.0M	0:20.05	Rxf5! 
 25	+2.04!	390.4M	0:18.36	Rxf5! 
 25	+1.03!	375.1M	0:17.64	Rxf5! 
 25	+0.23!	360.2M	0:16.94	Rxf5! 
 25	 -0.39!	345.3M	0:16.23	Rxf5! 
 25	 -0.87!	337.8M	0:15.88	Rxf5! 
 25	 -1.10?	275.7M	0:12.97	Rxf5 Nxd4+? 
 25	 -0.93!	259.6M	0:12.21	Rxf5! 
 25	 -1.14!	253.4M	0:11.91	Rxf5! 
 25	 -1.30!	247.4M	0:11.63	Rxf5! 
 25	 -1.41!	243.3M	0:11.43	Rxf5! 
 25	 -1.48!	242.3M	0:11.38	Rxf5! 
 24	 -1.55 	206.3M	0:09.68	Kg2 Rd8 Rd1 cxd4 cxd4 Qe7 Qc2 Nb4 Qc5 Nd5 Rg4 Qd7 Qc1 g6 Kf1 h5 Rg1 Rc8 Qb2 Be7 Nc5 Bxc5 dxc5 Rxc5 Bf3 Qe7 Be4 Kg8 Bxf5 exf5 
 24	 -1.60?	196.5M	0:09.21	Kg2 Rd8?

[MikeB]

I ran an overnight analyze on this 12 positions ( #3 was avoided).
Conditions : 10 min/positions, CPU : 6 cores 4 GHz, 8 GB HT, 6 pcs Syzygy, 4 runs.
Analyzing engine: Stockfish_160922_x64_modern_fast

Code: Select all

   Use seconds per move      : 600 Seconds per move
   Analysis Lines            : Minimum search depth=12
   Activate abort analysis   : True. Minimal analysis depth 24. Abort, if the correct move is held 3 additional ply 

  Solution                 1st run               2nd run               3rd run               4th run
 1) b2-b4                b2-b4   * 593 Sec     b2-b4   * 164 Sec     b2-b4   * 48 Sec      b2-b4   * 60 Sec  
 2) a7-a8Q, a7-a8R       Bc7-b6                Bc7-b6                Bc7-b6                Bc7-b6            
 3) Be3-d4               Rh7-a7                Rh7-a7                Rh7-a7                Rh7-a7            
 4) a5-a6                Kb6-b7                Kb6-b7                a5-a6   * 0 Sec       Kb6-b7            
 5) f5xg6                f5xg6   * 6 Sec       Bc7-e5                f5xg6   * 7 Sec       f5xg6   * 9 Sec   
 6) Ne5xd3               Ne5xd3  * 32 Sec      Ne5xd3  * 0 Sec       Ne5xd3  * 0 Sec       Ne5xd3  * 166 Sec 
 7) g3-g4                Be2-d1                Be2-d1                Be2-d1                Rh1-h3            
 8) .. Be1xh4            Be1xh4  * 2 Sec       Be1xh4  * 150 Sec     Be1xh4  * 244 Sec     Be1xh4  * 16 Sec  
 9) Nc3-e4               Nc3-e4  * 0 Sec       Nc3-e4  * 0 Sec       Nc3-e4  * 0 Sec       Nc3-e4  * 0 Sec   
10) Rf4xf5               Rf4xf5  * 10 Sec      Rf4xf5  * 5 Sec       Rf4xf5  * 4 Sec       Rf4xf5  * 8 Sec   
11) Bd3xh7               Bd3xh7  * 64 Sec      Bd3xh7  * 54 Sec      h4-h5                 Bd3xh7  * 59 Sec  
12) Qe2xd2, Ne5-g4       Rd1xd2                Rd1xd2                Ne5-g4  * 174 Sec     Rd1xd2   

So the real monster here is the 7:

[d] r1b4r/p4pk1/P3p1p1/1pBpPnPp/2pP1K2/2P3P1/4BP2/R6R w - - 0 1

Also Dann Corbit searched for half an hour until depth 52 with no result.

Do you know from which game is this one?

[d]r1b4r/p4pk1/P3p1p1/1pBpPnPp/2pP1K2/2P3P1/4BP2/R6R w - - 0 1

The real monster solved by the latest dev-SF-McB ...(early September release)

Code: Select all

dep	score	nodes	time	(not shown:  tbhits	knps	seldep)
 52	+2.35 	14.0G	10:17.06	g4 hxg4 Bxg4 Rxh1 Rxh1 Bd7 Kf3 Bc6 Ke2 Rh8 Rb1 b4 Rxb4 Rc8 Bxa7 Ra8 Rb7 Bb5 Rxb5 Rxa7 Bxf5 gxf5 Rb6 Ra8 Ke3 Kg6 f4 Ra7 Kd2 Kh5 Rc6 Kg4 Ke3 Kh5 Kf3 Kg6 Rd6 Kg7 Ke3 Kg6 Kd2 Kh5 Rb6 Kg4 Ke3 Kh5 Kf3 Kg6 Ke2 Ra8 Kf2 Kg7 Ke1 Kg6 Ke2  
 51	+2.35 	13.7G	10:03.18	g4 hxg4 Bxg4 Rxh1 Rxh1 Bd7 Kf3 Bc6 Ke2 Rh8 Rb1 b4 Rxb4 Rc8 Bxa7 Ra8 Rb7 Bb5 Rxb5 Rxa7 Bxf5 gxf5 Rb6 Ra8 Ke3 Kg6 f4 Ra7 Kd2 Ra8 Rd6 Kh5 Ke3 Kg6 Kf2 Ra7 Kf3 Ra8 Kg2 Kg7 Kf2 Kg6 Kg3 Ra7 Rb6 Ra8 Rc6 Ra7 Kf3 Kg7 Ke3 Ra8 Kd2 Kg6 Rb6  
 50	+2.35 	11.8G	8:39.37	g4 hxg4 Bxg4 Rxh1 Rxh1 Bd7 Kf3 Bc6 Ke2 Rh8 Rb1 b4 Rxb4 Rc8 Bxa7 Ra8 Rb7 Bb5 Rxb5 Rxa7 Bxf5 gxf5 Rb6 Kg6 f4 Ra8 Kf2 Ra7 Kf3 Kg7 Rc6 Kg6 Ke3 Kg7 Rd6 Ra8 Ke2 Kg6 Rc6 Kg7 Kf3 Ra7 Ke3 Kg6 Rb6 Ra8 Kf3 Ra7 Rd6 Ra8 Kg2 Kg7 Kf2 Kg6 Kf3 R 
 50	+2.08!	8.50G	6:17.92	g4! 
 50	+1.59!	8.21G	6:04.83	g4! 
 50	+1.22!	8.18G	6:03.76	g4! 
 50	+0.94!	8.16G	6:03.02	g4! 
 50	+0.73!	8.15G	6:02.57	g4! 
 50	+0.58!	5.54G	4:06.63	Rh3! 
 50	+0.47!	3.66G	2:42.97	Rh3! 
 50	+0.39!	2.96G	2:11.84	Rh3! 
 49	+0.32 	954.6M	0:43.43	Bd1 Kg8 Bc2 Rh7 Bb4 Bd7 Ba3 Rh8 Kf3 Kg7 Ke2 Rhe8 Rh2 Rh8 Bc5 Kg8 Rhh1 Kg7 Kd2 Kg8 Rab1 Kg7 Rh2 Kg8 Bd1 Rh7 Be2 Ng7 Bf3 Rh8 Kc2 Ne8 Rhh1 Bc6 Be7 Bd7 Be2 Nc7 Ra1 Ne8 Bc5 Ng7 Rab1 Ne8 Rh3 Ng7 Kd2 Rh7 Rhh1 
 48	+0.32 	784.9M	0:35.71	Bd1 Kg8 Bc2 Rh7 Bb4 Bd7 Ba3 Rh8 Kf3 Kg7 Ke2 Rhe8 Rh2 Rh8 Bc5 Kg8 Rhh1 Kg7 Kd2 Kg8 Rab1 Kg7 Rh2 Kg8 Bd1 Kg7 Bf3 Bc8 Ra1 Kg8 Bd1 Bd7 Rh1 Kg7 Bf3 Rh7 Rh3 Bc8 Bd1 Rh8 Be2 Kg8 Ra5 Kg7 Rxb5 Bxa6 Ra5 Bb7 Rh1 
 47	+0.32 	682.5M	0:31.18	Bd1 Kg8 Bc2 Rh7 Bb4 Bd7 Ba3 Rh8 Kf3 Kg7 Ke2 Rhe8 Rh2 Rh8 Bc5 Kg8 Rhh1 Kg7 Kd2 Kg8 Rab1 Kg7 Rh2 Kg8 Bd1 Kg7 Bf3 Bc8 Ra1 Kg8 Bd1 Bd7 Rh1 Kg7 Bf3 Rh7 Rh3 Bc8 Rh2 Rh8 Bd1 Bd7 Rh3 Bc8 Be2 Re8 Rah1 

[peter]

Hi Michael!

...
[d]r1b4r/p4pk1/P3p1p1/1pBpPnPp/2pP1K2/2P3P1/4BP2/R6R w - - 0 1

The real monster solved by the latest dev-SF-McB ...(early September release)

Code: Select all

dep	score	nodes	time	(not shown:  tbhits	knps	seldep)
 52	+2.35 	14.0G	10:17.06	g4 hxg4 Bxg4 Rxh1 Rxh1 Bd7 Kf3 Bc6 Ke2 Rh8 Rb1 b4 Rxb4 Rc8 Bxa7 Ra8 Rb7 Bb5 Rxb5 Rxa7 Bxf5 gxf5 Rb6 Ra8 Ke3 Kg6 f4 Ra7 Kd2 Kh5 Rc6 Kg4 Ke3 Kh5 Kf3 Kg6 Rd6 Kg7 Ke3 Kg6 Kd2 Kh5 Rb6 Kg4 Ke3 Kh5 Kf3 Kg6 Ke2 Ra8 Kf2 Kg7 Ke1 Kg6 Ke2  
 51	+2.35 	13.7G	10:03.18	g4 hxg4 Bxg4 Rxh1 Rxh1 Bd7 Kf3 Bc6 Ke2 Rh8 Rb1 b4 Rxb4 Rc8 Bxa7 Ra8 Rb7 Bb5 Rxb5 Rxa7 Bxf5 gxf5 Rb6 Ra8 Ke3 Kg6 f4 Ra7 Kd2 Ra8 Rd6 Kh5 Ke3 Kg6 Kf2 Ra7 Kf3 Ra8 Kg2 Kg7 Kf2 Kg6 Kg3 Ra7 Rb6 Ra8 Rc6 Ra7 Kf3 Kg7 Ke3 Ra8 Kd2 Kg6 Rb6  
 50	+2.35 	11.8G	8:39.37	g4 hxg4 Bxg4 Rxh1 Rxh1 Bd7 Kf3 Bc6 Ke2 Rh8 Rb1 b4 Rxb4 Rc8 Bxa7 Ra8 Rb7 Bb5 Rxb5 Rxa7 Bxf5 gxf5 Rb6 Kg6 f4 Ra8 Kf2 Ra7 Kf3 Kg7 Rc6 Kg6 Ke3 Kg7 Rd6 Ra8 Ke2 Kg6 Rc6 Kg7 Kf3 Ra7 Ke3 Kg6 Rb6 Ra8 Kf3 Ra7 Rd6 Ra8 Kg2 Kg7 Kf2 Kg6 Kf3 R 
 50	+2.08!	8.50G	6:17.92	g4! 
 50	+1.59!	8.21G	6:04.83	g4! 
 50	+1.22!	8.18G	6:03.76	g4! 
 50	+0.94!	8.16G	6:03.02	g4! 
 50	+0.73!	8.15G	6:02.57	g4! 
 50	+0.58!	5.54G	4:06.63	Rh3! 
 50	+0.47!	3.66G	2:42.97	Rh3! 
 50	+0.39!	2.96G	2:11.84	Rh3! 
 49	+0.32 	954.6M	0:43.43	Bd1 Kg8 Bc2 Rh7 Bb4 Bd7 Ba3 Rh8 Kf3 Kg7 Ke2 Rhe8 Rh2 Rh8 Bc5 Kg8 Rhh1 Kg7 Kd2 Kg8 Rab1 Kg7 Rh2 Kg8 Bd1 Rh7 Be2 Ng7 Bf3 Rh8 Kc2 Ne8 Rhh1 Bc6 Be7 Bd7 Be2 Nc7 Ra1 Ne8 Bc5 Ng7 Rab1 Ne8 Rh3 Ng7 Kd2 Rh7 Rhh1 
 48	+0.32 	784.9M	0:35.71	Bd1 Kg8 Bc2 Rh7 Bb4 Bd7 Ba3 Rh8 Kf3 Kg7 Ke2 Rhe8 Rh2 Rh8 Bc5 Kg8 Rhh1 Kg7 Kd2 Kg8 Rab1 Kg7 Rh2 Kg8 Bd1 Kg7 Bf3 Bc8 Ra1 Kg8 Bd1 Bd7 Rh1 Kg7 Bf3 Rh7 Rh3 Bc8 Bd1 Rh8 Be2 Kg8 Ra5 Kg7 Rxb5 Bxa6 Ra5 Bb7 Rh1 
 47	+0.32 	682.5M	0:31.18	Bd1 Kg8 Bc2 Rh7 Bb4 Bd7 Ba3 Rh8 Kf3 Kg7 Ke2 Rhe8 Rh2 Rh8 Bc5 Kg8 Rhh1 Kg7 Kd2 Kg8 Rab1 Kg7 Rh2 Kg8 Bd1 Kg7 Bf3 Bc8 Ra1 Kg8 Bd1 Bd7 Rh1 Kg7 Bf3 Rh7 Rh3 Bc8 Rh2 Rh8 Bd1 Bd7 Rh3 Bc8 Be2 Re8 Rah1 

Good to hear about the new release!

BTW, this really hard position is "solved" by komodo 11.2.01 now and then almolst at once.
At some SMP- trials K11.2 sticks to g4 right from the beginning, even if the evals stay in +/= and White's King-moves don't come into output soon.

Must be some kind of pawn-storm-code I guess, which I like to see here very much,even if the full search takes it's time still. If it's got on its way, solution is to be found much faster of course.

[MikeGL]

It is from this game:
[pgn]
[Event "Stockfish TCEC S92 vs Komodo 10, Slow 4"]
[Site "Ultimatum-PC"]
[Date "2016.07.13"]
[Round "1"]
[White "Komodo 10 64-bit"]
[Black "Stockfish 120716 64 BMI2"]
[Result "1-0"]
[ECO "C12h"]
[Annotator "0.00;0.00"]
[PlyCount "281"]
[TimeControl "25200+42"]

1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Bb4 5.e5 h6 6.Be3 Ne4 7.Qg4 Kf8 8.a3 Bxc3+
9.bxc3 Nxc3 10.Ne2 h5 11.Qf3 Nxe2 12.Bxe2 Nc6 13.h4 Ne7 14.Bg5 c5 15.O-O
Qc7 16.c3 Bd7 17.a4 Nc6 18.Qe3 Rb8 19.Bd3 Rc8 20.Rfb1 Na5 21.Qg3 b6 22.Ba6
Re8 23.Bd3 Rc8 24.Qf3 Be8 25.Ra2 Nc4 26.Qg3 Na5 27.Rc1 Bc6 28.Rf1 Bd7 29.
Rd1 Nc6 30.Rb1 Na5 31.Rd1 Nc6 32.Ba6 Rb8 33.Be2 Re8 34.Qe3 Ne7 35.Rc1 Nf5
36.Qf3 Kg8 37.Bd3 Qc6 38.Raa1 c4 39.Bc2 Bc8 40.Rcb1 Bd7 41.g3 Rb8 42.Bc1
Ra8 43.Ba3 Qc8 44.Bb4 Bc6 45.a5 b5 46.a6 Bd7 47.Bc5 Qe8 48.Bd1 Qc8 49.Bc2
Qe8 50.Qd1 Qb8 51.Qd2 Qd8 52.Bd1 Bc6 53.Bf3 Rh6 54.Re1 Kh8 55.Qg5 Qxg5 56.
hxg5 Rh7 57.Kg2 Bd7 58.Rh1 g6 59.Be2 Ng7 60.Rh2 Kg8 61.Rh3 Bc8 62.Kf3 Nf5
63.Kf4 Rh8 64.Rhh1 Kg7 65.Bf3 Kg8 66.Bd1 Kg7 67.Bf3 Kg8 68.Be2 Kg7 69.g4
hxg4 70.Bxg4 Rxh1 71.Rxh1 Bd7 72.Bxf5 gxf5 73.Ra1 Kg6 74.Rh1 Kg7 75.Be7
Rg8 76.Ra1 Bc6 77.Re1 Bd7 78.Ra1 Bc6 79.Re1 Bd7 80.f3 Bc6 81.Ra1 Bd7 82.
Bc5 Ra8 83.Rh1 Bc6 84.Be7 Rg8 85.Rf1 Bd7 86.Bc5 Ra8 87.Rc1 Bc6 88.Rh1 Bd7
89.Ra1 Bc6 90.Rb1 Kg6 91.Ra1 Kg7 92.Be7 Rg8 93.Rf1 Bd7 94.Bc5 Ra8 95.Rc1
Bc6 96.Rh1 Bd7 97.Rg1 Kg6 98.Rb1 Bc6 99.Rh1 Kg7 100.Rd1 Kg6 101.Rb1 Kg7
102.Be7 Rg8 103.Rh1 Bd7 104.Kg3 Bc6 105.Kf4 Bd7 106.Rh2 Bc8 107.Rb2 Bd7
108.Kg3 Bc6 109.Bc5 Kg6 110.Bxa7 Kxg5 111.Bc5 f4+ 112.Kf2 Rh8 113.Kg2 Kf5
114.a7 f6 115.exf6 Kxf6 116.Ra2 Ba8 117.Ra6 Rg8+ 118.Kf2 Rh8 119.Kg2 Rg8+
120.Kf2 Rh8 121.Rb6 Rh2+ 122.Ke1 Rc2 123.Rb8 Bc6 124.Rf8+ Kg5 125.Rc8 Bb7
126.Be7+ Kg6 127.Rb8 Bc6 128.Rb6 Ba8 129.Bb4 Ra2 130.Rxe6+ Kf5 131.Re5+
Kf6 132.Re7 Kg5 133.Rh7 Bc6 134.Kd1 Kg6 135.Rc7 Ba8 136.Bc5 Kh5 137.Rh7+
Kg6 138.Rh8 Bc6 139.Rc8 Ra1+ 140.Kd2 Ra2+ 141.Kc1 1-0[/pgn]

Looks like there is no win after 69.g4 of white if black played correctly.
In fact my GUI (Arena) already detected and announced a draw by 3-fold repetition at
99th move of black and again at 101st move of white.

Just to avoid the 50-move rule draw which is about to happen at 122nd move, black (Stockfish) gave up a pawn at a7 on its 110th move just to continue the game.
SF could've held the position with a similar defence (Ra8) just like a couple of moves ago. This is a similar engine bug being exploited by Nakamura at ICC online chess, where Rybka gives up many pawns in an equally blockaded position. Once Rybka gave up a single pawn or a couple of pawns, Nakamura would punish the engine.

regards,

[Vinvin]

Looks like there is no win after 69.g4 of white if black played correctly.
In fact my GUI (Arena) already detected and announced a draw by 3-fold repetition at
99th move of black and again at 101st move of white.

Just to avoid the 50-move rule draw which is about to happen at 122nd move, black (Stockfish) gave up a pawn at a7 on its 110th move just to continue the game.
SF could've held the position with a similar defence (Ra8) just like a couple of moves ago. This is a similar engine bug being exploited by Nakamura at ICC online chess, where Rybka gives up many pawns in an equally blockaded position. Once Rybka gave up a single pawn or a couple of pawns, Nakamura would punish the engine.

regards,

I posted the winning line in the first message of this thread :

[Event "-"]
[Site "-"]
[White "w"]
[Black "b"]
[Result "1-0"]
[FEN "r1b4r/p4pk1/P3p1p1/1pBpPnPp/2pP1K2/2P3P1/4BP2/R6R w - - 0 65"]

65. g4 hxg4 66. Bxg4 Rxh1 67. Rxh1 Bd7 68. Bxf5 gxf5 69. Be7 Rg8 70. Ra1
Bc6 71. Ke3 Ra8 72. f4 Rg8 73. Kd2 Bd7 74. Kc2 Bc8 75. Rh1 Bd7 76. Kc1 Bc8
77. Kb2 Bd7 78. Ka3 Bc8 79. Kb4 Bd7 80. Kc5 Be8 81. Rh6 b4 82. Kxb4 1-0

[MikeGL]

Looks like there is no win after 69.g4 of white if black played correctly.
In fact my GUI (Arena) already detected and announced a draw by 3-fold repetition at
99th move of black and again at 101st move of white.

Just to avoid the 50-move rule draw which is about to happen at 122nd move, black (Stockfish) gave up a pawn at a7 on its 110th move just to continue the game.
SF could've held the position with a similar defence (Ra8) just like a couple of moves ago. This is a similar engine bug being exploited by Nakamura at ICC online chess, where Rybka gives up many pawns in an equally blockaded position. Once Rybka gave up a single pawn or a couple of pawns, Nakamura would punish the engine.

regards,

I posted the winning line in the first message of this thread :

[Event "-"]
[Site "-"]
[White "w"]
[Black "b"]
[Result "1-0"]
[FEN "r1b4r/p4pk1/P3p1p1/1pBpPnPp/2pP1K2/2P3P1/4BP2/R6R w - - 0 65"]

65. g4 hxg4 66. Bxg4 Rxh1 67. Rxh1 Bd7 68. Bxf5 gxf5 69. Be7 Rg8 70. Ra1
Bc6 71. Ke3 Ra8 72. f4 Rg8 73. Kd2 Bd7 74. Kc2 Bc8 75. Rh1 Bd7 76. Kc1 Bc8
77. Kb2 Bd7 78. Ka3 Bc8 79. Kb4 Bd7 80. Kc5 Be8 81. Rh6 b4 82. Kxb4 1-0

Thanks Vincent you are indeed correct, I was just very excited to watch the exact game on how
Komodo 10 won, and didn't notice all the exact solution at first post.

But I noticed even Komodo 10 in real game didn't saw this winning line of yours because it even shifted its K to the K-side (with move Kg3) instead
of the Q-side to perform the winning maneuver by a king invasion at the
Q-side. Also, Komodo even reached a point where a repetition was already made and
also almost to the point of breaching the 50-move-rule draw (not sure if this specific rule is active in engine-engine matches).

My apologies, winning line you've posted starting with g4 looks correct.

regards