Tough tactical test position?

[peter]

Hi Eelco!

What kind of score do you guys get after 22... g5 23. Nxg5 Nxg5 24. hxg5 Qxg5 25. Nxc7 Rg8 26. g3 h4 27. Rb3 This is too low I think, but do you guys get more?

Not much too low, I guess, have the same line as pv in my .pgn here:
http://talkchess.com/forum3/viewtopic.p ... 71#p776071
Yet Vincent showed a reinforcement for Black after 22...Rg8 23.bxa5 with 23...g5 then, which might be as well as the lines after 22...g5.
http://talkchess.com/forum3/viewtopic.p ... 74#p776074
Till tomorrow!

[Dann Corbit]

[d]r1bq1r1k/2pn3n/1p1p2pb/pN1Pp2p/1PP1Pp1P/P4N2/2BBQPP1/RR4K1 b - - 0 22

Does any engine find g5 and the win?

I tried several engines. All of them liked Rd8.
It was modest computer and only ten minutes.
But if g5 is definitely the best, it is a very interesting problem.

Code: Select all

Analysis of Q:\tp.epd   
2018-10-10 2:48:21 PM Level: 600 Seconds
Analyzing engine: Komodo-12.1.1-64bit

 1 g5;                  
    Searching move: g6-g5
    Best move (Komodo-12.1.1-64bit): Rf8-g8
    Not found in: 10:00
     16	00:00	   2,480,888	9,923,468	-0.78	Bg7 a4 Rf7 Qe1 Kg8 Ra3 axb4 Bxb4 Ra6 Rba1 Nb8 a5 Bg4 axb6 Rxb6 Ba5 Rb7 Qc3 Bxf3 Qxf3 Qxh4
     17+	00:00	   5,009,810	9,715,910	-0.72	Bg7 Qd3 Rf7
     17-	00:00	   7,918,575	9,561,937	-0.76	Bg7 Bd1
     17+	00:00	   8,613,966	9,504,953	-0.71	Bg7 Bd1 Kg8
     17	00:01	   9,521,336	9,521,238	-0.69	Bg7 Qe1 a4 Qe2 Ndf6 Nc3 Bd7 c5 Kg8 Bd3 Qe7 Bb5 dxc5 Bc4 Qd6 bxc5 bxc5 Nb5 Bxb5 Bxb5
     18	00:01	  14,453,251	9,438,773	-0.74	Bg7 Bd1 Rf7 Rc1 Kg8 Qd3 Bb7 Ba4 Bf6 Qf1 Bc8 Qe2 Rf8 Rcb1 Bg7 Nc3 Nb8 c5 axb4 axb4 Bg4
     19	00:01	  17,682,524	9,430,580	-0.72	Bg7 Bd3 Kg8 Rc1 Rf7 Rab1 a4 Qf1 Bb7 Rc3 Rf8 Qe2 Ba6 Rcc1 Bc8 Ra1 Rf7 Qe1 Ba6
     20+	00:02	  27,622,819	9,407,110	-0.66	Bg7 Bd3 Kg8
     20-	00:03	  28,498,438	9,405,025	-0.70	Bg7 Bd3
     20-	00:03	  29,620,148	9,387,935	-0.81	Bg7 Bd1
     20	00:03	  30,685,676	9,399,802	-0.85	Bg7 Bd1 Rf7 Rc1 Kg8 Qd3 Rf8 Be2 Ba6 Qc2 Bb7 Bc3 Bc8 Bd3 a4 Rab1 Bb7 Be2 Bf6 Re1 Bg7 Rbc1 Bc8 Bd3 Ba6
     21	00:03	  33,762,408	9,356,989	-0.85	Bg7 Bd1 Rf7 Rc1 Kg8 Qd3 Rf8 Be2 Ba6 Qc2 Bc8 Rab1 Rf7 Bd3 Rf8 Rf1 Rf7 Ra1 Bb7 Rfc1 Rf8 Bc3 Bc8 Be2 a4
     21+	00:04	  45,495,866	9,303,231	-0.79	Rf7 Rc1 Bg7
     21+	00:05	  50,479,454	9,284,075	-0.71	Rf7 Qd3 Ndf6
     21-	00:05	  54,009,471	9,267,499	-0.76	Rf7 Qd3
     21	00:06	  60,596,761	9,256,229	-0.84	Rf7 Qd3 Ndf6 Bc3 Ng4 bxa5 bxa5 c5 Bg7 Rb2 Bf6 Bd1 Kg8 Qc4 Rd7 Rab1 Bxh4 cxd6 cxd6 Nxh4 Qxh4 Bxg4 hxg4
     22+	00:07	  66,078,791	9,254,281	-0.78	Rf7 Qd3 Ndf6
     22+	00:08	  74,368,908	9,237,381	-0.70	Rf7 Qd3 Ndf6
     22+	00:10	  93,842,954	9,223,388	-0.59	Rf7 Qd3 Ndf6
     22	00:14	 133,845,650	9,141,344	-0.50	Rf7 Bc3 Bg7 Qd2 a4 Re1 Kg8 Rac1 Bf6 Bd1 Ba6 g3 fxg3 fxg3 Bg7 Qd3 Bb7 Rf1 Bh6 Bd2 Bxd2 Nxd2
     23-	00:15	 142,541,554	9,128,880	-0.56	Rf7 Bc3
     23+	00:17	 156,113,696	9,121,793	-0.52	Rf7 Bc3 Bg7
     23	00:18	 170,900,291	9,125,430	-0.43	Rf7 Bc3 Kg8 Bd3 Bg7 Qd2 a4 Rc1 Ndf6 c5 Ne8 cxb6 cxb6 Qb2 Rb7 Nxd6 Nxd6 Nxe5 Qxh4 Nf3 Qd8 Bxg7 Rxg7 e5 Bf5 Bxf5 Nxf5 d6 Ng5
     24+	00:23	 211,077,782	9,129,131	-0.37	Rf7 Bc3 Kg8
     24-	00:25	 232,101,074	9,124,506	-0.41	Rf7 Bc3
     24+	00:27	 249,927,578	9,113,536	-0.36	Rf7 Bc3 Kg8
     24	00:41	 378,111,509	9,078,320	-0.34	Rf7 Kf1 Ndf6 Qe1 Rg7 bxa5 bxa5 c5 g5 Bxa5 g4 Ng5 dxc5 d6 g3 fxg3 Nxg5 hxg5 Bxg5 Kg1 fxg3 Bxc7 Qd7 Qxg3 Bf4 Qh4
     25+	00:45	 416,068,899	9,064,217	-0.28	Rf7 Kf1 Ndf6
     25+	00:47	 432,022,699	9,059,576	-0.20	Rf7 Be1 Rg7
     25+	01:00	 553,387,782	9,088,589	-0.09	Rf7 Be1 Rg7
     25-	01:01	 556,075,528	9,090,740	-0.16	Rf7 bxa5
     25+	01:09	 627,762,834	9,093,183	-0.06	Rf7 bxa5 bxa5
     25	01:15	 685,311,851	9,095,380	-0.13	Rf7 bxa5 bxa5 Qe1 Rg7 Bxa5 Nc5 Bc3 g5 Nxe5 dxe5 Bxe5 Qe7 Bxg7+ Bxg7 e5 gxh4 d6 cxd6 Nxd6 Ng5 Rb5 Bxe5 Rxc5 Bxd6 Qxe7 Bxe7 Re5 Bf6 Re8+ Kg7 Rae1
     26+	01:21	 739,890,294	9,072,910	-0.07	Rf7 bxa5 bxa5
     26-	01:25	 776,958,220	9,054,857	-0.11	Rf7 Bc3
     26+	01:29	 805,439,372	9,028,083	-0.06	Rf7 Bc3 Rg7
     26+	01:40	 899,889,149	8,984,194	+0.09	Rf7 Bc3 Rg7
     26-	02:00	1,076,434,730	8,967,534	-0.01	Rf7 Be1
     26+	02:07	1,146,018,488	8,997,812	+0.13	Rf7 Be1 Rg7
     26	02:07	1,146,350,560	8,998,512	 0.00	Rf7 a4 Rg7 Ra3 g5 hxg5 Nxg5 Nxg5 Bxg5 bxa5 bxa5 Rh3 Nf6 Rh2 f3 Qd3 Bxd2 Qxd2 fxg2 c5 Bg4 Qe3 Qe7 f3 Bc8 Qh6+ Rh7 Qg5 Rg7 Qh6+
     27	02:19	1,329,834,520	9,555,324	 0.00	Rf7 a4 Rg7 Ra3 g5 hxg5 Nxg5 Nxg5 Bxg5 bxa5 bxa5 Rh3 Nf6 Rh2 f3 Qd3 Bxd2 Qxd2 fxg2 c5 Bg4 Qe3 Qe7 f3 Bc8 Qh6+ Rh7 Qg5 Rg7 Qh6+
     28	02:22	1,357,120,079	9,547,213	 0.00	Rf7 a4 Rg7 Ra3 g5 hxg5 Nxg5 Nxg5 Bxg5 bxa5 bxa5 Rh3 Nf6 Rh2 f3 Qd3 Bxd2 Qxd2 fxg2 c5 Bg4 Qe3 Qe7 f3 Bc8 Qh6+ Rh7 Qg5 Rg7 Qh6+
     29	02:29	1,420,751,534	9,504,132	 0.00	Rf7 a4 Rg7 Ra3 g5 hxg5 Nxg5 Nxg5 Bxg5 bxa5 bxa5 Rh3 Nf6 Rh2 f3 Qd3 Bxd2 Qxd2 fxg2 c5 Bg4 Qe3 Qe7 f3 Bc8 Qh6+ Rh7 Qg5 Rg7 Qh6+
     29+	02:39	1,501,969,718	9,430,076	+0.06	Rg8 bxa5 bxa5
     29-	03:07	1,732,018,213	9,258,802	+0.02	Rg8 Kf1
     29	03:14	1,791,846,070	9,220,841	 0.00	Rg8 Kf1 Ndf6 bxa5 bxa5 Bc3 g5 Nxe5 dxe5 Bxe5 Qe7 Bd4 gxh4 Qxh5 Qg7 Qxh4 Qxg2+ Ke2 Bg5 Qh1 f3+ Kd3 Qg4 Rg1 Qf4 Be3 Qe5 Bd4 Qf4
     30	03:34	1,968,542,796	9,169,961	 0.00	Rg8 bxa5 bxa5 Qe1 Rg7 Bxa5 Nc5 Bb4 g5 Bxc5 gxh4 Qc3 h3 Nxe5 dxe5 Qxe5 Ng5 Rb3 Nf7 Qe7 Rxg2+ Kh1 Qxe7 Bxe7 Bg4 Rf1 f3 Nxc7 Bf4 Nxa8 Rh2+ Kg1 Rg2+ Kh1
     31+	03:57	2,175,448,780	9,153,523	+0.06	Rg8 bxa5 bxa5
     31+	04:20	2,386,998,256	9,161,349	+0.14	Rg8 bxa5 bxa5
     31-	04:45	2,618,057,316	9,156,781	+0.09	Rg8 bxa5
     31	04:58	2,728,875,191	9,150,839	 0.00	Rg8 bxa5 bxa5 Qe1 Rg7 Bxa5 Nc5 Bb4 g5 Qc3 gxh4 Bxc5 h3 Nxe5 dxe5 Qxe5 Ng5 Rb3 Nf7 Qe7 Rxg2+ Kh1 Qxe7 Bxe7 Bg4 Rf1 Ne5 Nd4 Kg8 c5 Kf7 d6 f3 Bh4 Bf4 dxc7 Rh2+ Kg1 Rg2+ Kh1
     32+	06:16	3,429,217,152	9,109,975	+0.06	Rg8 Kf1 Ndf6
     32+	07:09	3,903,208,316	9,082,744	+0.14	Rg8 Kf1 Ndf6
     32+	08:04	4,399,566,790	9,082,669	+0.25	Rg8 bxa5 bxa5
   2018-10-10 2:58:24 PM, Time for this analysis: 00:10:00, Rated time: 10:00

0 of 1 matching moves
2018-10-10 2:58:25 PM, Total time: 12:10:03 AM
Rated time: 10:00 = 600 Seconds

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Analysis of Q:\tp.epd   
2018-10-10 2:48:21 PM Level: 600 Seconds
Analyzing engine: Matefinder-x64-mingw

 1 g5;                  
    Searching move: g6-g5
    Best move (Matefinder-x64-mingw): Rf8-g8
    Not found in: 10:00
    16/23	00:01	  10,728,862	9,099,967	-0.81	Rf7 Bc3 Kg8 Bd1 Nhf6 Ba4 Ng4 Bc2 Kh8 Ng5 Bxg5 hxg5 Bb7 Bd1 a4 Rc1
    17/24	00:02	  18,359,912	9,030,945	-0.70	Bg7 Rc1 Kg8 Qe1 Rf7 Bc3 a4 Bd3 Ba6 Bb2 Bf6 Rab1 Bxb5 cxb5 Bxh4 Qc3 Ra7 Qc2
    18/25	00:03	  30,871,401	8,945,639	-0.64	Rf7 Rc1 Kg8 Bd3 g5 c5 bxc5 bxc5 g4 Ng5 Nxc5 Nxf7 Kxf7 Rxc5 dxc5 Rc1 Qe7 Qd1 Kg8 Qc2
    19/32	00:12	 112,515,394	8,939,726	-0.34	Rf7 Kf1 Kg8 Qe1 Bg7 Kg1 a4 Nc3 Ndf8 Qe2 Bg4 Bxa4 Bxf3 Qxf3 Qxh4 Qh3 Qxh3 gxh3 Ng5 Bc6 Nf3+ Kg2 Nxd2
    20/30	00:19	 173,970,464	8,875,138	 0.00	Rf7 Bc3 Kg8 Nd2 Bg7 Nf3
    21/28	00:30	 265,991,014	8,794,545	-0.06	Rf7 Kh1 Ndf6 bxa5 bxa5 c5 Bg4 Rb3 Bxf3 Rxf3 Ne8 Rb1 Qxh4+ Rh3 Qe7 c6 Ng5 Rh2 Nf6 f3 Rff8 Kg1
    22/30	00:32	 285,735,376	8,805,133	 0.00	Rf7 Bc3 Rg7 Ne1 Ndf6 Nf3
    23/30	00:36	 323,101,763	8,812,987	 0.00	Rf7 bxa5 bxa5 Qe1 Bg7 Bxa5 Nc5 Qc3 Bg4 Bb4 Na6 Ba5
    24/22	00:44	 391,586,602	8,770,922	 0.00	Rf7 bxa5 bxa5 Qe1 Bg7 Bxa5 Nc5 Qc3 Bg4 Bb4 Na6 Ba5
    25/41	04:47	2,470,175,386	8,600,679	+0.59	Rf7 bxa5 bxa5 Qe1 Rg7 Bxa5 Nc5 Qc3 g5 Nxd6 Qxd6 Bb4 gxh4 Qxe5 h3 Bc3 Kg8 Qe8+ Qf8 Qxf8+ Nxf8 Bxg7 Bxg7 e5 Bg4 Ra2 Bxf3 gxf3 Bxe5 Bf5
    26/40	06:13	3,179,778,908	8,513,213	+0.64	Rg8 bxa5 bxa5 Qe1 Rg7 Bxa5 Nc5 Bb4 g5 Bxc5 gxh4 Kf1 h3 gxh3 Ng5 Nxg5 Qxg5 Rb3 dxc5 Ke2 h4 a4 Qh5+ Kd2 f3+ Kc3 Bxh3 Kb2 Bg4 d6 cxd6 Nxd6
   2018-10-10 3:08:30 PM, Time for this analysis: 00:10:00, Rated time: 10:00

0 of 1 matching moves
2018-10-10 3:08:32 PM, Total time: 12:20:10 AM
Rated time: 10:00 = 600 Seconds

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Analysis of Q:\tp.epd   
2018-10-10 3:38:12 PM Level: 600 Seconds
Analyzing engine: Cfish-x64-mingw

 1 g5;                  
    Searching move: g6-g5
    Best move (Cfish-x64-mingw): Rf8-g8
    Not found in: 10:00
    16/24	00:00	   6,051,696	11,418,294	-0.62	Ndf6 bxa5 bxa5 Qe1 Bg4 Nh2 a4 Nxg4 hxg4 Qd1 Bg7 Be1 f3 gxf3 gxf3 Qxf3 Nh5 Qh3 Rf4
    17/27	00:00	   7,403,682	11,425,435	-0.88	Ndf6 bxa5 bxa5 Qe1 Bg4 Bxa5 Ne8 Nh2 Qxh4 f3 Qxe1+ Bxe1 Bc8 a4 g5 c5 dxc5 Bc3 Bg7 Nf1 g4 Nd2 Bd7 Nc4 gxf3
    18/31	00:00	   9,398,959	11,532,465	-0.74	Ndf6 bxa5 bxa5 Qe1 Ne8 Bxa5 Bg4 Nh2 Qxh4 f3 Qxe1+ Bxe1 Bc8 c5 g5 Bb4 dxc5 Bxc5 Rg8 Nf1 g4 Nd2 Rg6 fxg4 Rxg4 Kf1
    19/31	00:00	  10,185,567	11,509,115	-0.72	Ndf6 bxa5 bxa5 Qe1 Bg4 Bxa5 Ne8 Nh2 Qxh4 f3 Qxe1+ Bxe1 Bd7 Bc3 Nhf6 c5 g5 a4 g4 a5 Bc8 cxd6 cxd6 Bb4 Ra6
    20/27	00:01	  12,514,728	11,481,401	-0.70	Ndf6 bxa5 bxa5 Qe1 Bg4 Bxa5 Ne8 Nh2 Qxh4 f3 Qxe1+ Bxe1 Bd7 a4 g5 Bb4 Ra6 c5 g4 c6 Bc8 fxg4 hxg4 Bc3
    21/32	00:02	  24,807,169	11,230,044	-0.49	Ndf6 bxa5 bxa5 Qe1 Ne8 Bxa5 Bg4 Nh2 Qxh4 f3 Qxe1+ Bxe1 Bd7 Bb4 Rf6 Bc3 g5 c5 Rg6 a4 g4 a5 Bg7 a6 dxc5 a7
    22/30	00:02	  30,767,848	11,286,811	-0.43	Ndf6 bxa5 bxa5 Qe1 Ne8 Bxa5 Bg4 Nh2 Qxh4 f3 Qxe1+ Bxe1 Bd7 a4 g5 Bb4 Rf6 c5 g4 Bc3 Rg6 a5 Bg7 fxg4 hxg4 c6 Bc8
    23/33-	00:03	  34,077,376	11,235,534	-0.52	Ndf6 bxa5
    23/33-	00:03	  34,320,569	11,219,538	-0.60	Ndf6 bxa5
    23/33+	00:03	  40,425,132	11,185,703	-0.52	Ndf6
    23/36-	00:03	  42,861,039	11,141,419	-0.73	Ndf6 bxa5
    23/38	00:04	  51,949,543	11,086,116	-0.64	Ndf6 bxa5 bxa5 Qe1 Bg4 Bxa5 Ne8 Nh2 Qxh4 f3 Qxe1+ Bxe1 Bc8 Bb4 Rf6 a4 g5 a5 Rg6 Ba4 g4 Nc3 Nef6 Bc6 Ra6 c5 Ng5 fxg4 dxc5 gxh5
    24/35-	00:04	  52,450,990	11,079,634	-0.73	Ndf6 bxa5
    24/35	00:05	  54,660,033	11,071,507	-0.73	Ndf6 bxa5 bxa5 Qe1 Bg4 Bxa5 Ne8 Nh2 Qxh4 f3 Qxe1+ Bxe1 Bc8 Bc3 g5 c5 Nhf6 Bb4 dxc5 Bxc5 Rf7 Nf1 Nd7 Bb4 Ba6 Bd3 Bf8 Rc1 g4 Bxf8 Rxf8 a4 gxf3
    25/36+	00:05	  61,948,369	11,040,522	-0.64	Ndf6
    25/37+	00:05	  64,796,122	11,051,700	-0.56	Ndf6
    25/40	00:07	  82,248,504	10,896,728	-0.44	Ndf6 bxa5 bxa5 Qe1 Ne8 Bxa5 Bg4 Nh2 Qxh4 f3 Qxe1+ Bxe1 Bc8 Bb4 Rf6 Nf1 g5 Nd2 g4 c5 Rg6 Kf2 h4 cxd6 cxd6 Nc4 Ra6 Nbxd6 Nxd6 Nxe5 Rg7 Bd3
    26/42+	00:10	 112,887,001	10,820,186	-0.36	Ndf6
    26/42-	00:15	 162,525,033	10,666,471	-0.53	Ndf6 bxa5
    26/42-	00:15	 162,637,316	10,664,742	-0.66	Ndf6 bxa5
    26/42+	00:15	 167,210,848	10,650,372	-0.53	Ndf6
    26/43	00:17	 181,287,947	10,545,514	-0.58	Ndf6 bxa5 bxa5 Qe1 Bg4 Bxa5 Ne8 Bd1 Bxf3 Bxf3 Rf7 Bd2 Qxh4 Be2 Nef6 f3 Qg5 c5 dxc5 Rc1 Bf8 a4 h4 Kh2 Nh5 Bc4 Rd7 Nc3 Ng3 Bb5 Rf7 Bc6 Ra6 Qf2 Nf6 Bb5
    27/38+	00:18	 190,239,617	10,490,191	-0.49	Ndf6
    27/42+	00:19	 201,240,483	10,503,704	-0.41	Ndf6
    27/42+	00:23	 240,976,615	10,430,533	-0.28	Ndf6
    27/44	00:24	 258,368,525	10,449,264	-0.21	Ndf6 bxa5 bxa5 Qe1 g5 Bxa5 Ne8 Nxd6 Nxd6 Nxe5 gxh4 Ng6+ Kg8 e5 Re8 e6 h3 Bc3 Qg5 g3 fxg3 f4 h2+ Kg2 h1Q+ Qxh1 Qg4 Re1 Nf8 Qh3 Qxh3+ Kxh3 Bg7 Bxg7 Kxg7 Nxf8
    28/44+	00:28	 297,987,811	10,398,430	-0.13	Ndf6
    28/46-	00:30	 312,082,122	10,385,082	-0.30	Ndf6 bxa5
    28/46-	00:30	 313,539,904	10,385,898	-0.43	Ndf6 bxa5
    28/46+	01:13	 701,691,797	9,566,611	-0.30	Kg8
    28/49+	01:36	 935,480,843	9,652,889	-0.05	Ndf6
    28/55+	01:40	 970,786,234	9,690,613	+0.28	Rg8
    28/55	01:46	1,035,842,492	9,742,137	+0.28	Rg8 bxa5 bxa5 Qe1 g5 Bxa5 Rxa5 Qxa5 g4 Qxc7 Qxc7 Nxc7 gxf3 Bd1 fxg2 Ne6 Nhf6 Bf3 Nf8 Nxf8 Bxf8 a4 Nd7 a5 Nc5 Rb6 Be7 a6 Bxh4 Rxd6 Nd3 Rh6+ Kg7 Rxh5 Bxf2+ Kxg2 Kf6+ Kh1 Ne1 Rxe1 Bxe1 a7 Bd7 Rh7 Ba4 Bh5 Bh4 Rf7+ Kg5
    29/52-	01:48	1,053,023,993	9,753,202	+0.20	Rg8 bxa5
    29/52+	01:49	1,065,896,849	9,758,547	+0.28	Rg8
    29/57	01:51	1,085,827,685	9,768,590	+0.21	Rg8 bxa5 bxa5 Qe1 Rg7 Bxa5 Nc5 Bc3 g5 Nxe5 dxe5 Bxe5 Qe7 Bxg7+ Bxg7 e5 Bxe5 Qe2 Bg4 f3 Qg7 fxg4 Bxa1 Qf2 Na4 gxh5 gxh4 Qxf4 Nc3 h6 Ne2+ Kh1 Qxg2+ Kxg2 Nxf4+ Kf3 Be5 Re1 Ng5+ Kg4 Nf7 Rxe5 Nxe5+ Kxf4 Nxc4 Bf5 Nd6 Nxd6 cxd6
    30/51+	01:56	1,141,828,153	9,802,698	+0.30	Rg8
    30/51+	02:00	1,178,429,845	9,820,821	+0.39	Rg8
    30/51+	02:19	1,383,789,599	9,933,310	+0.70	Rg8
    30/51	02:27	1,472,465,018	9,978,416	+0.61	Rg8 bxa5 bxa5 Qe1 Rg7 Bxa5 Nc5 Bc3 g5 Nxe5 dxe5 Bxe5 Qe7 Bxg7+ Bxg7 e5 Bxe5 Qe2 Bg4 f3 Qg7 fxg4 Bxa1 Qf2 Na4 gxh5 gxh4 Qxf4 h3 Qe4 Nf6 Qg6 Be5 gxh3 Nb2 Qxg7+ Kxg7 Nxc7 Rxa3 Ne6+ Kh6
    31/51-	02:32	1,525,074,212	10,003,372	+0.53	Rg8 bxa5
    31/51+	02:40	1,605,442,280	10,027,371	+0.61	Rg8
    31/51+	03:04	1,871,325,073	10,137,024	+0.74	Rg8
    31/51	03:12	1,948,585,507	10,148,301	+0.78	Rg8 bxa5 bxa5 Qe1 Rg7 Bxa5 Nc5 Bc3 g5 Nxe5 dxe5 Bxe5 Qe7 Bxg7+ Bxg7 e5 Bxe5 Qe2 Bg4 f3 Qg7 fxg4 Bxa1 Qf2 Na4 gxh5 gxh4 Qxf4 h3 Qe4 Nf6 Qg6 Be5 gxh3 Rg8 Qxg7+ Rxg7+ Kf2 Nb2 h6 Rg5 Rxb2 Bxb2 Nxc7 Rh5 Ne6
    32/53+	04:05	2,505,471,834	10,212,201	+0.86	Rg8
    32/53-	04:08	2,540,633,498	10,212,739	+0.69	Rg8 bxa5
    32/53-	04:09	2,547,805,061	10,213,854	+0.56	Rg8 bxa5
    32/56	04:20	2,657,079,780	10,215,765	+0.52	Rg8 bxa5 bxa5 Qe1 Rg7 Bxa5 Nc5 Bb4 g5 Bxc5 gxh4 Nbd4 h3 Nf5 Rxg2+ Kh1 Ng5 Qc3 Bxf5 exf5 dxc5 Rg1 Qf6 Nxg5 Qxg5 Qxh3 Rg4 Be4 Rxa3 Rxa3 Rxg1+ Kh2 Rg4 Ra8+ Kg7 Ra6 Rh4 Rg6+ Qxg6 fxg6 Rxh3+ Kxh3 Bg5 Kg2 Be7 Kh3 Kh6 Kg2 Bh4 Kf3 Bf6 Kg2 Kg5
    33/36+	04:49	2,956,811,055	10,218,839	+0.61	Rg8
    33/50+	04:52	2,992,221,232	10,220,137	+0.70	Rg8
    33/63+	05:00	3,078,724,111	10,235,800	+0.83	Rg8
    33/63	05:18	3,268,703,743	10,268,641	+0.78	Rg8 bxa5 bxa5 Qe1 Rg7 Bxa5 Nc5 Bc3 g5 Nxe5 dxe5 Bxe5 Qe7 Bxg7+ Bxg7 e5 Bxe5 Qe2 Bg4 f3 Qg7 fxg4 Bxa1 Qf2 Na4 gxh5 gxh4 Qxf4 h3 Qe4 Nf6 Qg6 Be5 gxh3 Nb6 Qxg7+ Kxg7 Re1 Nxc4 Bd3
    34/58-	05:32	3,425,226,841	10,296,417	+0.70	Rg8 bxa5
    34/58-	05:33	3,434,287,450	10,297,466	+0.61	Rg8 bxa5
    34/58-	05:37	3,471,071,800	10,301,291	+0.48	Rg8 bxa5
    34/58+	05:38	3,488,875,415	10,302,943	+0.58	Rg8
    34/58+	06:02	3,739,752,240	10,328,011	+0.84	Rg8
    34/62-	06:40	4,158,891,857	10,387,205	+0.29	Rg8 bxa5
    34/62	07:34	4,723,603,942	10,394,019	+0.37	Rg8 bxa5 bxa5 Qe1 Rg7 Bxa5 Nc5 Bb4 g5 Bxc5 gxh4 Nbd4 Bh3 Rb3 Bxg2 Kh2 exd4 Bxd4 Nf6 e5 dxe5 Bxe5 Ng4+ Kxg2 Nxe5+ Kh1 Nxf3 Rxf3 Qg5 Qf1 Rgg8 Rb1 Rae8 Rh3 Re2 Bd3 Rd2 Be4 Qe5 Re1 Qf6 Rd3 Ra2 d6 cxd6 Bd5 Rb8 Re6 Qf8 Rh3 Bg7 Rxh4
    35/57+	07:36	4,745,493,246	10,395,271	+0.46	Rg8
    35/57+	07:38	4,765,463,149	10,393,934	+0.55	Rg8
    35/59-	08:35	5,315,232,278	10,304,392	+0.28	Rg8 bxa5
    35/60+	08:48	5,449,282,457	10,312,719	+0.48	Rg8
    35/60	08:58	5,550,235,405	10,317,745	+0.55	Rg8 bxa5 bxa5 Qe1 Rg7 Bxa5 Nc5 Bb4 g5 Bxc5 gxh4 Nbd4 Bh3 Rb3 Bxg2 Kh2 dxc5 Nf5 Qf6 Qc3 Ng5 Nxg7 Nxf3+ Kxg2 Qxg7+ Kh1 Nd4 Rg1 Qh7 Bd1 Nxb3 Qxb3 Qxe4+ f3 Qf5 Kh2 Rg8 Bc2 Qf7 Rxg8+ Qxg8 Qd3 Bf8 Qg6 Qxg6 Bxg6 Kg7 Bxh5 Kh6 Bg4 Bd6
   2018-10-10 3:48:15 PM, Time for this analysis: 00:10:00, Rated time: 10:00

0 of 1 matching moves
2018-10-10 3:48:16 PM, Total time: 12:10:03 AM
Rated time: 10:00 = 600 Seconds

--------------------------------------------------------------------------------

Analysis of Q:\tp.epd   
2018-10-10 3:38:12 PM Level: 600 Seconds
Analyzing engine: Stockfish-x64-mingw

 1 g5;                  
    Searching move: g6-g5
    Best move (Stockfish-x64-mingw): Rf8-g8
    Not found in: 10:00
    16/31	00:00	   5,158,077	10,399,348	-0.61	Ndf6 bxa5 bxa5 Qe1 Bg4 Nh2 a4 Bb4 Qe7 Qc3 Rfb8 Bd3 Bf8 Qe1 Ne8 Bc3 Qxh4 f3 Qxe1+ Rxe1
    17/24	00:00	   5,830,615	10,430,438	-0.87	Ndf6 bxa5 bxa5 Qe1 Bg4 Bxa5 Ne8 Rb3 Bxf3 Rxf3 Qxh4 Rh3 Qd8 f3 Ng5 Rh2 Rf7 Bc3 Nf6 Rh1 Kh7
    18/27	00:00	   6,424,641	10,429,612	-0.76	Ndf6 bxa5 bxa5 Qe1 Bg4 Bxa5 Ne8 Nh2 Qxh4 f3 Qxe1+ Bxe1 Bc8 a4 Nhf6 c5 dxc5 Bc3 Nd7 a5 Ba6 Nf1 Rf7 Nd2
    19/31	00:00	   7,311,685	10,445,264	-0.71	Ndf6 bxa5 bxa5 Qe1 Ne8 Bxa5 Bg4 Nh2 Qxh4 f3 Qxe1+ Bxe1 Bc8 Bb4 Nhf6 c5 dxc5 Bxc5 Rf7 Nf1 Ba6 a4 Bxb5 axb5 Rxa1 Rxa1 Nd6 Ra6
    20/32	00:07	  72,033,653	10,256,820	-0.18	Rf7 Bd3 Ndf6 c5 bxc5 bxc5 g5 Bc3 g4 Nxe5 dxe5 Bxe5 f3 Qa2 Rg7 Bg3 fxg2 Kxg2 Ba6 Qc2 Re7 a4 Bg7 c6 Ne8 Bf4
    21/39	00:12	 120,841,805	10,107,210	 0.00	Rf7 Bc3 g5 Nxc7 Qxc7 hxg5 Bxg5 Nxg5 Nxg5 Qxh5+ Kg8 Qxg5+ Rg7 Qh5 Nf6 Qh6 Qxc4 Bxe5 dxe5 Qxf6 Qxc2 Rc1 Qxe4 Rxc8+ Rxc8 Qe6+ Kh7 Qh3+ Kg6 Qxc8 Qxd5 bxa5 bxa5 Qh3 Kg5 Re1 Kf6 Rc1 Kg5
    22/33	00:13	 136,886,949	10,124,774	 0.00	Rf7 bxa5 bxa5 Qe1 Nc5 Bxa5 Rg7 Qc3 Bg4 Nd2 Qxh4 Bxc7 Ng5 Bxd6 Nh3+ gxh3 Bxh3 Kh1 Bf1+ Kg1
    23/39	00:28	 285,551,846	10,010,581	+0.47	Rf7 Kf1 g5 hxg5 Nxg5 Qe1 Nxf3 gxf3 h4 Ke2 Rh7 Qh1 Bg7 Qh2 h3 Rg1 axb4 axb4 Ba6 Bd3 Bxb5 cxb5 Rxa1 Rxa1 Rh6 Rg1 Nf6
    24/44	00:49	 489,974,569	9,923,736	+0.41	Rf7 Kf1 g5 hxg5 Nxg5 Ng1 Nf6 bxa5 bxa5 f3 h4 Qf2 Nh5 Ke2 Ng3+ Kd1 Bd7 Nc3 Bf8 Nge2 Rh7 Kc1 Nxe2+ Qxe2 h3 Kb2 h2 Rh1 Kg8 Qf2 Qf6
    25/35	00:55	 551,577,655	9,908,877	 0.00	Rf7 bxa5 bxa5 Qe1 Nc5 Bxa5 Rg7 Bc3 Qe7 Ba5
    26/32	00:57	 563,846,594	9,902,643	 0.00	Rf7 bxa5 bxa5 Qe1 Nc5 Bxa5 Rg7 Bc3 Qe7 Ba5
    27/11	01:01	 602,628,712	9,880,941	 0.00	Rf7 bxa5 bxa5 Qe1 Nc5 Bxa5 Rg7 Bc3 Qf6 Ba5
    28/47	01:11	 700,353,835	9,870,116	 0.00	Rf7 bxa5 bxa5 Qe1 Rg7 Bxa5 Nc5 Bc3 Qe7 Ba5
    29/52	01:25	 847,617,399	9,879,566	+0.24	Rf7 bxa5 bxa5 Qe1 Rg7 Bxa5 Nc5 Bc3 g5 Nxe5 dxe5 Bxe5 Qe7 Bxg7+ Bxg7 e5 Bxe5 Qe2 Bg4 f3 Qg7 fxg4 Bxa1 Qf2 Na6 Bxh7 Kxh7 hxg5 Be5 Qh4 Nc5 Re1 Rf8 g6+ Kg8 gxh5 Nd3 Rf1 f3 gxf3 Qh6 Kh1 Nf4 Qg4 Qxh5+ Qxh5 Nxh5
    30/63	02:25	1,435,476,027	9,878,782	+0.74	Rf7 bxa5 bxa5 Qe1 Rg7 Bxa5 Nc5 Bc3 g5 Nxe5 dxe5 Bxe5 Qe7 Bxg7+ Bxg7 e5 Bxe5 Qe2 Bg4 f3 Qg7 fxg4 Bxa1 Qf2 Na4 gxh5 gxh4 h6 Qf6 d6 cxd6 Rd1 Be5 Qf3 Rf8
    31/55	03:54	2,284,047,554	9,740,241	+0.58	Rf7 a4 Rg7 Ra3 g5 bxa5 g4 Ne1 bxa5 g3 Nc5 Nd3 f3 Qd1 Bxd2 Qxd2 Nxe4 Qe3 Bf5 Ne1 Nhf6 Rab3 Qe8 Na7 Qg6 Rb8+ Rg8 Rxg8+ Rxg8 Bxe4 Nxe4 Rb7 Bd7 Rxc7 Bxa4 Nc6 Bxc6
    32/46	04:33	2,653,280,509	9,704,934	+0.66	Rf7 a4 Rg7 bxa5 bxa5 Ra3 g5 hxg5 Bxg5 Qe1 Bh6 Bxa5 Nc5 Nxc7 Rxc7 Rb5 Bg7 Bb6 Bf6 Qd1 Qe7 Nh2 h4 a5 Qg7 Bxc7 Qxc7 Rb6 Bd7 Ng4 Bg7 Nh2 Nf6 Qe1 Nh5 Nf1 Bf6
    33/54	07:17	4,240,291,510	9,696,616	+0.73	Rg8 bxa5 bxa5 Qe1 Rg7 Bxa5 Nc5 Bc3 g5 Nxe5 dxe5 Bxe5 Qe7 Bxg7+ Bxg7 e5 Bxe5 Qe2 Bg4 f3 Qg7 fxg4 Bxa1 Qf2 Na4 gxh5 gxh4 Qxf4 h3 Qe4 Nf6 Qg6 Be5 gxh3 Nb2 Qxg7+ Kxg7 Re1 Re8 Kg2 Nxh5 Re4 Kf7 Rh4 Nf4+ Kf3 Nxc4 Rxf4+ Bxf4
    34/57	07:24	4,310,721,899	9,693,877	+0.64	Rg8 bxa5 bxa5 Qe1 Rg7 Bxa5 Nc5 Bc3 g5 Nxe5 dxe5 Bxe5 Qe7 Bxg7+ Bxg7 e5 Bxe5 Qe2 Bg4 f3 Qg7 fxg4 Bxa1 Qf2 Na4 gxh5 gxh4 Qxf4 h3 Qe4 Nf6 Qf3 Be5 Re1 Ng4 Bg6
    35/54	09:38	5,592,882,444	9,675,413	+0.72	Rg8 bxa5 bxa5 Qe1 Rg7 Bxa5 Nc5 Bc3 g5 Nxe5 dxe5 Bxe5 Qe7 Bxg7+ Bxg7 e5 Bxe5 Qe2 Bg4 f3 Qg7 fxg4 Bxa1 Qf2 Na4 hxg5 Be5 Bxh7 Kxh7 Qh4 Nb6 Rc1 Rf8 Qxh5+ Kg8 g6 f3 Rf1 Nxc4 Rxf3 Rxf3 gxf3 Bf4 Qh7+ Qxh7 gxh7+ Kxh7
   2018-10-10 3:58:20 PM, Time for this analysis: 00:10:00, Rated time: 10:00

0 of 1 matching moves
2018-10-10 3:58:21 PM, Total time: 12:20:09 AM
Rated time: 10:00 = 600 Seconds

[AndyKHC]

[pgn][FEN "r1bq1r1k/2pn3n/1p1p2pb/pN1Pp2p/1PP1Pp1P/P4N2/2BBQPP1/RR4K1 b - - 0 1"] 1... g5 2. hxg5 (2. Nxg5 Bxg5 3. hxg5 Rg8 4. Qxh5 Rxg5 5. Qh2 Ndf6 6. Kf1 Qe7 7. f3 Bd7) 2... Nxg5 3. Nxg5 (3. bxa5 Rg8 4. axb6 Nxb6 5. Ne1 f3 6. Bxg5 Qxg5 7. Qxf3 Bg4) 3... Qxg5 4. Nxc7 (4. f3 Nf6 5. Qf2) Rg8 5. Qf3 (5. f3 Nf6 6. Ne6 Bxe6 7. dxe6 h4 8. g4 (8. Qf1 Qh5) 8... hxg3 9. Qg2 Bf8 10. Kf1 Kg7 11. Ke2 axb4 12. Bxb4 Rh8 13. Rh1 Be7 14. Rag1 Qg6) (5. Qf1 Nf6 6. Rb3 (6. Nxa8 a4 7. Bd1 Nxe4 8. Be1 Bh3) 6... Ra7 7. Ne6 Bxe6 8. dxe6 Qh4 9. Rd1 Rag7 10. e7 a4 11. Rc3 Kh7 12. Bc1 Ng4 13. Rh3 Qxh3 14. gxh3 Ne3+ 15. Kh1 Nxf1 16. Rxf1 Rxe7) (5. g3 Qh4 6. Nxa8 (6. Be1 Nf6 7. Nxa8 (7. Rb3 a4 8. Rc3 Ra7 9. Ne6 Qh3 10. Qf1 Bxe6 11. dxe6 Qxe6 12. c5 Rf7 13. Qe2 bxc5 14. Bxa4 d5) 7... a4 8. Rd1 Bg4 9. Qd3) 6... fxg3 7. f3 Bf4 8. Qg2 Nf8 9. Nxb6 Bh3) 5... Qh4 6. Nxa8 (6. Kf1 Nf8 7. Ke2 Bg4) 6... Nf6 7. Be1 (7. Bd1 Bh3 8. Rb3 Rxg2+) (7. Rb3 Ng4 8. Nxb6 Nh2) 7... Bg4 8. Qd3 f3 9. g3 Be3 [/pgn]

After 22... g5 23. Nxg5 Nxg5 24. hxg5 Qxg5 25. Nxc7 Rg8 I think white is lost and I've shown the lines I have analysed. Eelco's suggestion of g3 was a move I missed but after some analysis I think black still wins. The problem is I can't find a winning attack if white plays 25. f3 and 26. Qf2 with the idea of evacuating the white king to the queen side. I think black's best option is heading into a likely winning endgame a pawn up from what I have analysed (though I haven't included that here) but I wonder if there is not more.

[MikeB]

What kind of score do you guys get after 22... g5 23. Nxg5 Nxg5 24. hxg5 Qxg5 25. Nxc7 Rg8 26. g3 h4 27. Rb3 This is too low I think, but do you guys get more? Probably a Kaissa thing

[d]r1b3rk/2Nn4/1p1p3b/p2Pp1q1/1PP1Pp1p/PR4P1/2BBQP2/R5K1 b - -

Engine: Kaissa IV (512 MB)
by T. Romstad, M. Costalba, J. Kiiski, G. Linscott

42 75:12 -0.75 6...Rb8 7.Ne6 Qg6 8.Kg2 Nf8 9.Rh1 Nxe6
10.dxe6 Bxe6 11.Rxh4 Kg7 12.Qf3 Bg5
13.Rh1 Rh8 14.Rd3 Rxh1 15.Kxh1 Rh8+
16.Kg1 axb4 17.Bxb4 fxg3 18.Qxg3 Qh6
19.Qg2 Kf7 (7.115.874.171) 1577

42 75:12 0.00 6...axb4 7.Nxa8 Nc5 8.Rab1 Nxb3
9.Rxb3 hxg3 10.Rxg3 Bg4 11.Rxg4 Qxg4+
12.Qxg4 Rxg4+ 13.Kf1 bxa3 14.Bb3 Rh4
15.Kg2 Rg4+ (7.115.874.171) 1577

42 75:12 0.00 6...a4 7.Rd3 Rb8 8.Ne6 Qg6 9.g4 f3
10.Qxf3 Bxd2 11.Rxd2 Nf6 12.Kh1 Nxg4
13.Rg1 Bxe6 14.dxe6 Qxe6 15.Qf5 Qh6
16.Rxg4 Rxg4 17.Qxg4 Qxd2 18.Qxh4+ Kg7
19.Qg4+ Kh8 (7.115.874.171) 1577

41 75:12 +0.75 6...Ra6 7.Nxa6 Bxa6 8.Kg2 f3+ 9.Rxf3 Qxd2
10.Qxd2 Bxd2 11.Ba4 Nf8 12.bxa5 Bxa5
13.Rh1 Ng6 14.Rf6 Bxc4 15.Be8 Kh7
16.Bf7 Rg7 17.Be6 Nf4+ 18.Kf3 Nxe6
19.Rxe6 Rg6 (7.115.874.171) 1577

Here you go ...

Code: Select all

dep	score	nodes	time	(not shown:  tbhits	knps	seldep)
 36	 -1.09?	7.63G	5:25.35	Rb8 Ne6 Qg6 Kg2 Nf8 Rh1 Nxe6 dxe6 Bxe6 Rxh4 Kg7 Qf3 Bg5 Rh1 Rh8 Rd3 Rxh1 Kxh1 axb4 Rxd6 Be7 Rxe6 Qxe6 axb4 Qh3+ Kg1 fxg3 Qxg3+ Qxg3+ fxg3 Ra8 Bc3 Ra3 Bb2 Rxg3+ Kf2 Rg5 Bc3 Kf6 Ba4 Rg7 Bc6 Bd6 Bd5 Ra7 Ke2 Rh7? 
 36	 -1.22?	7.30G	5:11.27	Rb8 Ne6 Qg6 Kg2 Nf8 Rh1 Nxe6 dxe6 Bxe6 Rxh4 Kg7 Qf3 Bg5 Rh1 Rh8 Rd3 axb4 Rxd6 Rxh1 Kxh1 Be7 Rxe6 Qxe6 axb4 Qh3+ Kg1 Rh8 Bc3 Kf6 c5 bxc5 bxc5 Qh2+? 
 36	 -1.31?	6.82G	4:50.50	Rb8 Ne6 Qg6 Kg2 Nf8 Rh1 Nxe6 dxe6 Bxe6 Rxh4 Kg7 Qf3 Bg5 Rh1 Rh8 Rd3 axb4 Rxd6 Rxh1 Kxh1 Be7 Rxe6 Qxe6 axb4 Qh3+ Kg1 fxg3 Qxg3+ Qxg3+ fxg3 Ra8 Bc3 Ra3 Bb2 Rxg3+ Kf2 Rg5 Bc3 Kf6 Ba4 Rg7 Bc6 Bd6 Be1 Ra7 Kf3 Ra3+? 
 35	 -1.38!	5.82G	4:07.69	Rb8 Ne6 Qg6 Kg2 Nf8 Rh1 Nxe6 dxe6 Bxe6 Rxh4 Kg7 Bc3 Bg5 Rh5 Rh8 Bd1 fxg3 Rb2! 
 34	 -1.24!	3.44G	2:25.40	Rb8 Ne6 Qg6 Kg2 Nf8 Rh1 Nxe6 dxe6 Bxe6 bxa5 h3+ Kh2 Qf7 Be1 bxa5 Rxb8 Rxb8 Bc3 Bxc4 Bd3 Be6 Bxa5 Rb3 Rf1 Rxa3 Bd2! 
 34	 -1.15?	2.83G	1:59.70	Rb8 Ne6 Qg6 Kg2 Nf8 Rh1 Nxe6 dxe6 Bxe6 Rxh4 Kg7 Qf3 Bg5 Rh1 Rh8 Rd3 axb4 axb4 Rxh1 Kxh1 Qh7+ Kg1 Rh8 gxf4 Qh2+ Kf1 Bh3+ Ke2 Qg1 Qxh3 Rxh3 Rxh3 Qg4+ Rf3 Bxf4 Bc3 Kf6 Bd1 Qg2? 
 33	 -1.17!	2.48G	1:44.79	Rb8 Ne6 Qg6 Kg2 Nf8 Rh1 Nxe6 dxe6 Bxe6 Rxh4 Kg7 Rd3 Bg5 Rh1 Rh8 Qf3 axb4 Bxb4 fxg3 Qxg3 Rxh1 Kxh1 Rh8+ Kg1 Qh6 Qg2 Kf7 Kf1 Bh3 Qxh3 Qxh3+ Rxh3 Rxh3 Bxd6 Ke6 Bb4 Be7 Kg2 Rh4 Bd3 Rf4 Bd2 Rf7 Bb4 Bh4 f3 Rd7 Be2 Rc7 Bd3! 
 32	 -1.09 	2.01G	1:24.80	Rb8 Ne6 Qg6 Kg2 Nf8 Rh1 Nxe6 dxe6 Bxe6 Rxh4 Kg7 Rd3 Bg5 Rh1 Rh8 Qf3 Rxh1 Kxh1 axb4 Bxb4 Rh8+ Kg1 fxg3 Qxg3 Qh6 Qg2 Kf7 Kf1 Bh3 Qxh3 Qxh3+ Rxh3 Rxh3 Bxd6 Ke6 Bb4 Rh1+ Ke2 Be7 Bd1 Bc5 Bxc5 bxc5 Kd2 Rh2 Ke2 Rh3 a4 Rc3 Kd2 
 31	 -1.07!	1.70G	1:11.36	Rb8 Ne6 Qg6 Kg2 Nf8 Rh1 Nxe6 dxe6 Bxe6 Rxh4 Kg7 Rd3 Bg5 Rh1 Rh8 Qf3 Rxh1 Kxh1 axb4 Bxb4 Qh6+ Kg1 fxg3 Qxg3 Rh8 Qg2 Kf7 Kf1 Bh3 Qxh3 Qxh3+ Rxh3 Rxh3 Bxd6 Ke6 Bb4 Be7 Ke2 Bd6 Bd3 Kd7 Kf1! 
 30	 -1.08?	1.47G	1:01.72	Rb8 Ne6 Qg6 Kg2 Nf8 Rh1 Nxe6 dxe6 Bxe6 Rxh4 Kg7 Rd3 Bg5 Rh1 Rh8 Qf3 fxg3? 
 30	 -1.17?	1.45G	1:00.78	Rb8 Ne6 Qg6 Kg2 Nf8 Rh1 Nxe6 dxe6 Bxe6 Rxh4 Kg7 Rd3 Bg5 Rh1 Rh8 Qf3 Kf7? 
 29	 -1.20!	1.35G	0:56.61	Rb8 Ne6 Qg6 Kg2 Nf8 Rh1 Nxe6 dxe6 Bxe6 Rxh4 Kg7 g4 Rh8 Bd1 Bg5 Rh5 b5 bxa5 Bxc4 Qf3 Bh4 Kh2 d5 exd5 Bxb3 Bxb3 Bxf2 Bxf4 Bg1+ Kxg1 Rxh5 Bg3 Rg5 Qe2 Re8 Qxb5! 
 29	 -1.07?	1.21G	0:50.71	Rb8 Ne6 Qg6 Kg2 Nf8 Rh1 Nxe6 dxe6 Bxe6 Rxh4 Kg7 g4 Bg5 Rh5 axb4 Bd1 Be7? 
 29	 -1.38!	1.18G	0:49.56	Rb8 Ne6 Qg6 Kg2 Nf8 Rh1 Nxe6 dxe6 Bxe6 Rxh4 Kg7 Qf3 Bg5 Rh1 Rh8 bxa5 Rxh1 Kxh1 Rh8+ Kg1 Qh7 Rxb6! 
 28	 -1.22!	842.6M	0:35.27	Rb8 Ne6 Qg6 Kg2 Nf8 Nxf8 Rxf8 Rh1 Bg4 Qe1 fxg3 Rxg3 Qh5 Kg1 Bxd2 Qxd2 axb4 axb4 Ra8 Qc1 Ra7 f3! 
 28	 -1.26!	744.1M	0:31.21	Rb8 Ne6 Qg6 Kg2 Nf8 Rh1 Nxe6 dxe6 Bxe6 Rxh4 Kg7 g4 Bg5 Rh5 Rbf8 bxa5 Rh8 Bd1 Bd8 Rhh3 Rxh3 Rxh3 f3+ Rxf3 Bxg4 Rg3 Bxe2 Rxg6+ Kxg6 Bxe2 bxa5 Be3 Be7 Bg4! 
 27	 -1.17 	609.1M	0:25.49	Rb8 Ne6 Qg6 Kg2 Nf8 Nxf8 Rxf8 Rh1 Bg4 Qe1 fxg3 Rxg3 hxg3 Rxh6+ Qxh6 Bxh6 gxf2 Qxf2 Rxf2+ Kxf2 Kg8 Ke3 Kf7 Kd2 Ke7 Be3 Kd7 bxa5 bxa5 c5 Kc7 Kc1 dxc5 Bxc5 Rg8 Kd2 Bf3 Ke3 Rg3 Bd3 Bg2+ Ke2 Kd7 Kd2 
 26	 -1.12 	454.0M	0:18.97	Rb8 Ne6 Qg6 Kg2 Nf8 Nxf8 Rxf8 Rh1 Bg4 Qe1 fxg3 Rxg3 Qh5 Kg1 Bxd2 Qxd2 axb4 axb4 Ra8 Qc1 Be2 c5 dxc5 bxc5 bxc5 Rh2 Rxf2 Qg5 Qxg5 Rxg5 Rf1+ Kg2 Rf4 d6 Ra1 
 25	 -0.97!	268.5M	0:11.24	Rb8 Ne6 Qg6 Kg2 Nf8 Rh1 Nxe6 dxe6 Bxe6 Rxh4 Kg7 g4 Rh8 Bd1 Bg5 Rh5 Rxh5 gxh5 Qf7 bxa5 Kh7 Rc3! 
 25	 -0.84?	254.8M	0:10.65	Rb8 Ne6 Qg6 Kg2 Nf8 Rh1 Nxe6 dxe6 Bxe6 Rxh4 Kg7 g4 Rh8 Bd1 f3+? 
 25	 -1.14!	250.7M	0:10.47	Rb8 Ne6 Qg6 Kg2 Nf8 Nxf8 Rxf8 Rh1 Bg4 Qe1 fxg3 Rxg3 Qh5 Kg1 Bxd2 Qxd2 axb4 axb4 Ra8 Qe1 Rf4 c5! 
 24	 -0.80?	131.5M	0:05.48	Rb8 Ne6 Qg6 Kg2 Nf8 Nxf8 Rxf8 Rh1 Bg4 Qe1 fxg3 Rxg3 Qh5 Rh2 Bxd2 Qxd2 axb4 Kf1 Rf6 axb4 Ra8? 
 24	 -0.89?	129.3M	0:05.39	Rb8 Ne6 Qg6 Kg2 Nf8 Nxf8 Rxf8 Rh1 Bg4 Qe1 fxg3 Rxg3 Qh5 Rh2 Bxd2 Qxd2 Rg8? 
 23	 -0.98 	128.9M	0:05.37	Rb8 Ne6 Qg6 Kg2 Nf8 Nxf8 Rxf8 Rh1 Bg4 Qe1 fxg3 Rxg3 Qh5 Rh2 Bxd2 Qxd2 axb4 Kf1 Rf6 axb4 Rg8 Kg1 Bf3 Kf1 hxg3 Rxh5+ Bxh5 
 23	 -0.93?	122.2M	0:05.09	Rb8 Ne6 Qg6 Kg2 Nf8 Nxf8 Rxf8 Rh1 Bg4 Qe1 fxg3 Rxg3 Qh5 Rh2 Bxd2 Qxd2 axb4 Kf1 Rf4 Qxb4 Qh6 Qd2 Qh7? 
 22	 -0.74?	99.3M  	0:04.13	Rb8 Ne6? 
 22	 -0.89?	86.1M  	0:03.57	Rb8 Kg2 axb4 Ne6 f3+ Rxf3 Qxd2 Qxd2 Bxd2 Rh1 Rg4? 
 21	 -0.98 	70.5M  	0:02.91	Rb8 Ne6 Qg6 Kg2 Nf8 Nxf8 Rxf8 Rh1 fxg3 Rxg3 hxg3 Rxh6+ Qxh6 Bxh6 Rxf2+ Qxf2 gxf2 Kxf2 Kg8 Kf3 Kf7 Be3 Bd7 Bd3 Kf6 c5 dxc5 bxc5 bxc5 
 19	 -0.93 	44.0M  	0:01.82	Rb8 Ne6 Qg6 Kg2 Nf8 Nxf8 Rxf8 Rh1 fxg3 Rxg3 hxg3 Rxh6+ Qxh6 Bxh6 Rxf2+ Qxf2 gxf2 Kxf2 Kg8 Bd1 Ra8 bxa5 Rxa5 Be3 Rxa3 Bxb6 Bh3 Bc7 Ra2+ Ke1 
 17	 -0.84 	30.4M  	0:01.26	Rb8 Nb5 Qg6 Be1 hxg3 fxg3 a4 Rc3 Nf8 Na7 Bg4 Qh2 Nh7 Nc6 Rb7 Qh4 Be2 c5 Ng5 cxd6 Qxd6 
 15	 -0.61 	12.9M  	0:00.52	Rb8 Ne6 Qg6 Kg2 Nf8 Rh1 Nxe6 dxe6 Bxe6 bxa5 h3+ Kh2 bxa5 Rg1 Qf7 Rxb8 Rxb8 gxf4 Rb2 f5 Rxc2 fxe6 Qxe6 
 15	+0.34 	2.37M  	0:00.10	Rb8 Ne6 Qg6 Kg2 Nf8 Rh1 Bxe6 dxe6 Nxe6 Rxh4 Nd4 Qd1 Nxb3 Bxb3 Kh7 Kf1 axb4 axb4 Ra8 Bc2 
 13	+0.23 	2.02M  	0:00.08	Rb8 Ne6 Qg6 Kg2 axb4 Rh1 Nc5 Nxc5 Bg4 Qf1 h3+ Kh2 bxc5 gxf4 bxa3 Rxa3 
 13	+0.13 	1.19M  	0:00.05	Rb8 Ne6 Qg6 Kg2 h3+ Kxh3 Nf8 Kg2 Bxe6 dxe6 Nxe6 Rh1 Nd4 Qd3 Kg7 bxa5 
 10	 -0.05 	738512	0:00.03	Rb8 Rf1 Qg6 Ne6 Nf8 Nxf8 Rxf8 bxa5 hxg3 fxg3 
 10	+0.43 	242012	0:00.01	Rb8 Ne6 Qg6 Rf1 Nf8 Nxf8 Rxf8 bxa5 hxg3 fxg3 Bh3 
  6	+0.44 	165590	0:00.01	Rb8 Ne6 Qg6 Rf1 Nf8 Nxf8 
  6	+2.41 	26285  	0:00.00	Ba6 bxa5 hxg3 fxg3 bxa5 Nxa8 
  4	+1.69 	10222  	0:00.00	hxg3 fxg3 a4 Ne6 
  3	 -4.54 	4516    	0:00.00	hxg3 Nxa8 gxf2+ Kxf2 
  2	 -2.61 	3216    	0:00.00	hxg3 Nxa8 gxf2+ Kxf2 
  1	 -0.94 	1789    	0:00.00	a4 
  0	# 
 

[peter]

Hi Andy! Thanks for the fine position!

but I wonder if there is not more.

So do I. Yet a clearly won position after 22...g5 is all we needed to prove and to exclude a second winner, which 22...Rg8 with 23...g5 could be yet too.
Anyhow 22...g5 has the edge I'd say, and I'd call it the more clearly game changing move. ...g5 as 23rd after 22...Rg8 might win too but maybe not quite as quickly.

Here's the update of my yesterday's .pgn, your lines included now with end- evals too, 6.(27.)Rb3 instead of Nxa8 seems a final enhancement for Black to me after25.(4.)Nxc7, yet that whole line might be busted by you, so I returned to 25.f3 as pv again.

[pgn] [Event "CCC"] [Site "?"] [Date "2018.10.10"] [Round "?"] [White "Any, Engine"] [Black "KHC, Andy"] [Result "*"] [Annotator "Martan,Peter"] [SetUp "1"] [FEN "r1bq1r1k/2pn3n/1p1p2pb/pN1Pp2p/1PP1Pp1P/P4N2/2BBQPP1/RR4K1 b - - 0 22"] [PlyCount "17"] 22... g5 $1 (22... Rg8 $5 23. Rb3 (23. Kh2 g5 24. hxg5 Nxg5 25. Rh1 axb4 {-2.0/ 37 CF}) (23. Qd3 g5) (23. Kf1 g5) (23. bxa5 g5 (23... bxa5 24. Qe1 Rg7 25. Bxa5 Nc5 26. Nxd6 Qxd6 27. Rb5 Ba6 28. Rxc5 Qxc5 29. Nxe5 Qe7 30. Bc3 Kg8 {-0.1/39 CF}) 24. axb6 Nxb6 25. c5 g4 26. Nh2 Nd7 27. g3 Nxc5 28. Bb4 Nf8 29. Bxc5 dxc5 30. Bb3 Rg7 31. d6 c6 {-2.0/41 CF}) 23... axb4 24. Bxb4 Rg7 25. Kf1 Ndf6 26. Ke1 g5 27. hxg5 Nxg5 28. Kd2 Nxf3+ 29. gxf3 h4 30. Rh1 h3 {-1.8/43 CF}) (22... Ndf6 $2 23. bxa5 bxa5 24. Qe1 g5 25. Bxa5 Rf7 26. c5 gxh4 27. Nxd6 Rg7 28. Nxh4 f3 29. g3 Ng5 30. Rb3 Nh3+ {-0.3/39 CF}) 23. Nxg5 (23. hxg5 Nxg5 24. Nxg5 {transp.}) 23... Nxg5 24. hxg5 Qxg5 25. f3 (25. Nxc7 $6 Rg8 26. Qf3 (26. Qf1 $2 Ra7 {-3.8/ 35 CF}) (26. g3 $2 h4 (26... Qh4 27. Be1 (27. Nxa8 $2 fxg3 {-9.3/31 CF}) 27... Nf6 28. Rb3 (28. Nxa8 $2 fxg3 {-9.8/39 CF}) 28... a4 29. Rc3 Ra7 30. Ne6 Qh3 { -3.8/33 CF}) 27. Rb3 Rb8 28. Ne6 Qg6 29. Kg2 Nf8 30. Rh1 Nxe6 {-1.1/41 CF}) 26... Qh4 (26... Nf6 {-2.8/37 CF} 27. Ne6 Qh4 28. Be1 Bxe6 29. dxe6 Ng4 30. Rb3 Qh2+ {-2.3/41 CF}) 27. Rb3 (27. Nxa8 $2 Nf6 28. Rb3 (28. Be1 Bg4 {-10.8/35 CF}) 28... Ng4 29. Nxb6 Nh2 {-8.3/35 CF}) (27. Kf1 $2 Nf8 28. Ke2 Bg4 {-5.5/35 CF}) 27... Nf6 28. Ne6 Ng4 29. Be1 Qh2+ 30. Kf1 Ne3+ 31. fxe3 Bxe6 32. dxe6 fxe3 33. e7 Qh1+ 34. Ke2 Rxg2+ {-2.3/45 CF}) 25... Nf6 26. Qf2 Rg8 27. Kf1 h4 28. Ke2 Qxg2 29. Rh1 Qxf2+ 30. Kxf2 h3 {-1.9/43 CF} * [/pgn]

[MikeB]

[d]r1bq1r1k/2pn3n/1p1p2pb/pN1Pp2p/1PP1Pp1P/P4N2/2BBQPP1/RR4K1 b - - 0 22

Does any engine find g5 and the win?

Release candidate McCain 10:

Code: Select all

dep	score	nodes	time	(not shown:  tbhits	knps	seldep)
 48	 -1.34!	368.7G	4:40:20	Rg8 Bd1 g5 hxg5 Nxg5 Qd3 Nf6 Nxg5 Bxg5 bxa5 bxa5 Bf3 Ng4 Be1 Bh6 Kf1 Nh2+ Kg1 Qh4 Nxc7 Bg4 Nxa8 Bxf3 Rb8 Rxb8 Nc7! 
 47	 -1.26 	333.3G	4:13:40	Rg8 Bd1 g5 hxg5 Nxg5 Qd3 Nf6 Nxg5 Bxg5 Bf3 Ng4 bxa5 bxa5 Be1 Bh6 Kf1 Nh2+ Ke2 Nxf3 gxf3 Bh3 Bc3 Bg2 a4 h4 c5 Rg7 Rh1 Bxh1 Rxh1 Bg5 Kd2 Bf6 c6 Qc8 Qf1 Kg8 Kc2 Kf7 Kb3 Rh7 Rh3 Be7 Ka3 Bg5 Kb2 Rh6 Kc2 Rg6 Kb2 Kg8 Rh1 Bf6 Kb3 Kg7  
 46	 -1.28 	317.3G	4:01:47	Rg8 Bd1 g5 hxg5 Nxg5 Qd3 Nf6 Nxg5 Bxg5 Bf3 Ng4 bxa5 bxa5 Be1 Bh6 Kf1 Nh2+ Ke2 Nxf3 gxf3 Bh3 Bc3 Bg2 a4 h4 c5 Rg7 Rh1 Bxh1 Rxh1 Bg5 Kd2 Bf6 c6 Qc8 Qf1 Kg8 Kd1 Kf7 Kc2 Bg5 Kb2 Rg6 Kc2 Be7 Kb3 Bf6 Kc2 Rh6 Rh3 Rh7 Kb3 Be7 
 45	 -1.36 	305.8G	3:53:14	Rg8 Bd1 g5 hxg5 Nxg5 Qd3 Nf6 Nxg5 Bxg5 Bf3 Ng4 bxa5 bxa5 Be1 Bh6 Kf1 Nh2+ Ke2 Nxf3 gxf3 Bh3 Bc3 Bg2 a4 h4 c5 Rg7 Rh1 Bxh1 Rxh1 Bg5 Kd2 Bf6 c6 Rh7 Qf1 Qc8 Qg2 Rg7 Qf1 Kg8 Kc2 Rh7 Rh3 Kf7 Kb3 Be7 Kb2 Rg7 Kc2 Bg5 Kb3 Qb8 Ka2 Rg8 
 45	 -1.37?	289.9G	3:41:17	Rg8 bxa5 g5 axb6 Nxb6 c5 g4 Ne1 Nd7 g3 Nxc5 a4 Nf8 Ra3 Ng6 Ng2 f3 Qe1 Bxd2 Qxd2 Rg7 Qh6+ Kg8 Nxc7 Rxc7 Ne3 Nxh4 Rb6 Nb7 gxh4 Qxh4? 
 45	 -1.45?	286.0G	3:38:24	Rg8 bxa5 g5 axb6 Nxb6 c5 g4 Ne1 Nd7 g3 Nxc5 a4 Nf8 Qd1 Ng6 Ng2 Rf8 Qe1 Bd7 Ba5 fxg3 fxg3 Qf6 Bxc7 Bf4? 
 44	 -1.38!	188.6G	2:24:56	Rg8 bxa5 g5 axb6 Nxb6 c5 g4 Ng5 Bxg5 hxg5 dxc5 Bc3 Nd7 d6! 
 44	 -1.31!	152.3G	1:57:08	Rg8 bxa5 g5 axb6 Nxb6 c5 g4 Ng5 Bxg5 hxg5 Na4 cxd6 cxd6 Bb4 Nxg5 Nxd6 Ba6 Qd1 Nc3 Bxc3 Qxd6 Bd3 f3 Bxa6 Rxa6 Qd3 fxg2 Kxg2 Qf6 Rh1 Nh3 Qg3 Rg5 Rh2 Ra7 Kh1 Rf7 Qe3 Kh7 Rd1 Rgg7 d6 Kg8 Qe2 Qg5 Qc4 Qf4 Qe2 h4 Qe3 Qf6 Rxh3 gxh3 Qx 
 44	 -1.23?	138.8G	1:46:57	Rg8 bxa5 g5 axb6 Nxb6 c5 g4 Ng5 Bxg5 hxg5 Na4 cxd6 cxd6 Bb4 Nxg5 Nxd6 Ba6 Qd1 Nc3 Bxc3 Qxd6 Bd3 f3 Bxa6 Rxa6 Qd3 fxg2 Kxg2 Qf6 Rh1 Nh3 Qg3 Rg5 Rh2 Ra7 Kh1 Rf7 Qe3 Kh7 Rd1 Rgg7 d6 h4 Qe2 Qg5 Bd2 Qg6 Ba5 Qe6 Bd8 g3? 
 43	 -1.17!	134.6G	1:43:42	Rg8 bxa5 g5 axb6 Nxb6 c5 g4 Ng5 Bxg5 hxg5 Na4 cxd6 cxd6 Bb4 Nxg5 Nxd6 Ba6 Qd1 Nc3 Bxc3 Qxd6 Bd3 f3 Bxa6 Rxa6 Qd3 fxg2 Kxg2 Qf6 Rh1 Nh3 Qg3 Rg5 Rh2 Ra7 Kh1 Rf7 a4 Kh7 Bd2 Rgg7 Bc3 Nxf2+ Rxf2 Qxf2 Qxf2 Rxf2 a5 Ra7 d6 Rf3 Kg1! 
 43	 -1.21!	131.5G	1:41:20	Rg8 Nxc7! 
 42	 -1.13 	129.6G	1:39:56	Rg8 bxa5 g5 axb6 Nxb6 c5 g4 Ng5 Bxg5 hxg5 Na4 cxd6 cxd6 Bb4 Nxg5 Nxd6 Ba6 Qd1 Nc3 Bxc3 Qxd6 Bd3 f3 Bxa6 Rxa6 Qd3 fxg2 Kxg2 Qf6 Rh1 Nh3 Qg3 Rg5 Rh2 Ra7 Kh1 Rf7 a4 Kh7 Bd2 Rgg7 Bc3 Nxf2+ Rxf2 Qxf2 Qxf2 Rxf2 a5 Re2 a6 Ra7 d6 Rxe4 
 42	 -1.20?	129.3G	1:39:41	Rg8 bxa5 g5 axb6 Nxb6 c5 g4 Ng5 Qd7? 
 42	 -1.29?	129.2G	1:39:37	Rg8 bxa5 g5 axb6 Nxb6 c5 g4 Ng5 Bxg5 hxg5 Na4 cxd6 cxd6 Bb4 Nxg5 Nxd6 Ba6 Qd1 Nc3 Bxc3 Qxd6 Bd3 f3 Bxa6 Rxa6 Qd3 fxg2 Kxg2 Qf6 Rh1 Nh3 Qg3 Rg5 Rh2 Ra7 Kh1 Nf4? 
 41	 -1.13?	112.9G	1:27:17	Rg8 bxa5 g5 axb6 Nxb6 c5 g4 Ng5 Bxg5 hxg5 Na4 cxd6 cxd6 Bxa4 Rxa4 Bxf4 exf4 Qc2 Ra8 Qc6 Bd7 Qxd6 f3 g6 Bxb5 Qxd8 Rgxd8 Rxb5 Nf6 Re1 fxg2 Rb7 Re8 d6 Rxe4 Rxe4 Nxe4 Kxg2 Kg8 Rh7 Rd8 Rxh5 Rxd6 Rh4 Rxg6? 
 41	 -1.21?	112.7G	1:27:08	Rg8 bxa5 g5 axb6 Nxb6 c5 g4 Ng5 Bxg5 hxg5 Na4 cxd6 cxd6 Bb4 Nxg5 Nxd6 Ba6 Qd1 Nc3 Bxc3 Qxd6 Bd3 f3 Bxa6 Rxa6 Qd3 fxg2 Kxg2 Qf6 Rh1 Nh3 Qg3 Rg5 Rh2 Ra7 Kh1 Rf7 Bd2 Rg8? 
 40	 -1.14!	98.8G	1:16:28	Rg8 Bd1 g5 hxg5 Nxg5 Qd3 Nf6 Nxg5 Bxg5 Bf3 Bh4 Be1 Rg7 Rc1 Bg4 Bxg4 Nxg4 Qh3 Qg5 c5 bxc5 bxc5 Rag8 Qf3! 
 40	 -1.18!	85.3G	1:06:03	Rg8 bxa5 g5 axb6 Nxb6 c5 g4 Ng5 Bxg5 hxg5 Na4 cxd6 cxd6 Bb4 Nxg5 Nxd6 Ba6 Qd1 Nc3 Bxc3 Qxd6 Bd3 f3 Bxa6 Rxa6 Qd3 fxg2 Kxg2 Qf6 Rh1 Nh3 Qg3 Rg5 Rab1 Rxa3 Rb8+ Kh7 Rhb1 Nf4+ Kh1 Rg7 Re8! 
 39	 -0.72!	60.1G	46:34.08	Rf7 bxa5 bxa5 Qe1 Ndf6 c5 g5 cxd6 cxd6 Bxa5 Rxa5 Nxd6 Rg7 Qc3 Qxd6 Qxa5 gxh4 Nxh4 Rg8 Rb6 Qc7 Bb3 f3 Nxf3 Qg7 Nh4 Qg4 d6 Qxh4 Bxg8 Bf4 d7 Nxe4 Qe1 Bxd7 Bd5 Qh2+ Kf1 Nd2+ Ke2 e4 Rb8+! 
 39	 -0.76!	40.6G	31:32.18	Rf7 a4 Rg7 bxa5 bxa5 Ra3 g5 hxg5 Bxg5 Qe1 Nc5 Bxa5 Bh6 Bxc7 Rxc7 Nxc7 Qxc7 a5 Bg5 Rb6 Bd7 Nxg5 Nxg5 f3 Kg7 Qh4 Kg6 Qe1 Nf7 Qb4 Na6 Qb3 h4 Rb7 Qc5+ Kf1 h3 gxh3! 
 38	 -0.67!	32.2G	25:04.57	Rf7 Kh2 Ndf6 bxa5 bxa5 Rh1 Bg4 Kg1 Rg7 Rb1 g5 hxg5 Nxg5 Kf1 Nd7 Nc3 Qf6 Na4 h4 Bc3 h3 Kg1! 
 38	 -0.71!	27.2G	21:13.25	Rg8 bxa5 g5 axb6 Nxb6 c5 g4 Nh2 Nd7 cxd6 Qxh4 Nxc7 Ba6 Nxa6 f3 Qd1 Bxd2 Qxd2 Rxa6 Bd3 Rxd6 g3 Qf6 Nf1 Ng5 Ne3 Nc5 Rb4! 
 38	 -0.75!	25.3G	19:44.47	Rg8 Kf1 Ndf6 Bc3 Bg4 bxa5 bxa5 Qd2 g5 Bxa5 Bxf3 gxf3 Ne8 c5 g4 Bxc7 Nxc7 Nxd6 Rf8 Nf5 Rxf5 exf5 Qxh4 Ke2 gxf3+ Kd1 Qh1+ Qe1 Qxe1+ Kxe1 Nxd5 Kd2! 
 37	 -0.36!	14.2G	10:48.35	Ndf6 bxa5 bxa5 Qe1 g5 g3 fxg3 fxg3 Ng4 Rb3 Kg8 Bxa5 Rxa5 Qxa5 gxh4 Qxc7 Qxc7 Nxe5! 
 37	 -0.28?	9.84G	7:29.21	Rf7 bxa5 bxa5 Qe1 Rg7 Bxa5 Nc5 Nxd6 Qxd6 Rb5 Ba6 Rxc5 Qxc5 Nxe5 Qe7 Bc3 Nf8 Nf3 Bxc4 Rb1 Qxa3 Ra1 Ba2 Bb1 Qb3 Qd2 Ra3 Bb2 Bxb1 Rxa3 Qb6? 
 36	 -0.26?	8.16G	6:11.56	Rf7 bxa5 bxa5 Qe1 Nc5 Bxa5 Rg7 Nxd6 Qxd6 Rb5 Ba6 Rxc5 Qxc5 Nxe5 Kg8 Bb4 Qb6 Bc3 g5 Rb1 Qd6 Nf3 g4 Nd4 Bxc4 Nf5 Bd3? 
 36	 -0.34?	7.51G	5:41.30	Rf7 bxa5 bxa5 Qe1 Nc5 Bxa5 Rg7 Nxd6 Qxd6 Rb5 Bd7 Bc3 Re8 Rxc5 Qxc5 Nxe5 Nf6 Nf3 Ng4 Qe2 c6 Bd4 Qa5 Qe1 Qc7 Qb4 c5 Qxc5 Qxc5 Bxc5 Rc8 Bb4 Rxc4 Bd3 Rc8 e5 Ba4 Re1 Rd7 Bxg6 Rg7? 
 35	 -0.42!	7.26G	5:29.83	Rf7 bxa5 bxa5 Qe1 Rg7 Bxa5 Nc5 Nxd6 Qxd6 Rb5 Bd7 Bc3 Re8 Bxe5 Rxe5 Rxc5 Re8 Ra5 Bg4 e5 Qe7 Nd4 f3 g3 Qxe5 Qxe5 Rxe5 Ra8+ Rg8 Ra7 Bg7 Rxc7 Rge8 Rf1 Nf8 Bd3 Re2 Nc6! 
 35	 -0.34?	6.85G	5:11.19	Rf7 bxa5 bxa5 Qe1 Nc5 Bxa5 Rg7 Nxd6 Qxd6 Rb5 Ba6 Rxc5 Qxc5 Nxe5 Qe7 Bc3 Nf8 Rb1 Kg8 Nf3 Bxc4 Rb4 Ba2 a4 c5 Rb2 Bc4 a5 Nd7 Ba4 Qd6 Bc6 Re8 Qb1 Rge7 e5 Nxe5 Bxe8 Nxf3+ gxf3 Bg5? 
 34	 -0.44!	5.32G	4:00.60	Rg8 bxa5 bxa5 Qe1 Rg7 Bxa5 Nc5 Nxd6 Qxd6 Rb5 Ba6 Rxc5 Qxc5 Nxe5 Qe7 Bc3 Nf8 Nf3 Bxc4 Rb1 c6 dxc6 Rc8 Ba4 Qxa3 Rb4 Be6 Bb2 Qd3 Qc1 Kg8 Bxg7 Bxg7 e5 Qe2 Bb5 Qa2 Rxf4 Bd5 Rd4! 
 34	 -0.36?	5.14G	3:52.06	Rg8 bxa5 bxa5 Qe1 Rg7 Bxa5 Nc5 Nxd6 Qxd6 Rb5 Ba6 Rxc5 Qxc5 Nxe5 Qe7 Bc3 Kg8 Nf3 Nf8 Rb1 Bxc4 Rb4 Ba2 a4 c5 Rb2 Bc4 a5 Nd7 Ba4 Qd8 Bxd7 Qxd7 Rb6 Qa4 Ng5 Bxg5 hxg5 Kh8? 
 33	 -0.44 	5.06G	3:48.59	Rg8 bxa5 bxa5 Qe1 Rg7 Bxa5 Nc5 Nxd6 Qxd6 Rb5 Ba6 Rxc5 Qxc5 Nxe5 Qe7 Bc3 Nf8 Nf3 Bxc4 Rb1 Kg8 Rb4 Ba2 a4 c5 Rb2 Bc4 a5 Nd7 Ba4 Qd8 Bxd7 Qxd7 Rb6 Qa4 Bxg7 Bxg7 Rxg6 Qxa5 Qxa5 Rxa5 Ng5 Kh8 
 33	 -0.59?	4.74G	3:33.63	Rg8 bxa5 bxa5 Qe1 Rg7 Bxa5 Nc5 Nxd6 Qxd6 Rb5 Ba6 Rxc5 Qxc5 Nxe5 Qe7 Bc3 Nf8 Nf3 Bxc4 Rb1 Qe8? 
 33	 -0.90!	4.70G	3:32.20	Rg8 bxa5 bxa5 Qe1 Rg7 Bxa5 Nc5 Kf1 g5 Bb4 gxh4 Bxc5 h3 gxh3 Ng5 Nxg5 Qxg5 Ke2 dxc5 f3 Qe7 Qf2 h4 Rg1 Rg3 Rxg3 fxg3 Qg2 Ba6 a4 Bf4 Ra3 Kh7 a5 Bh6 Ke1 Bc8 Ke2! 
 32	 -0.48!	3.29G	2:27.78	Rg8 bxa5 bxa5 Qe1 Rg7 Bxa5 Nc5 Bb4 g5 Bxc5 gxh4 Nbd4 Bh3 Ne6 Bxe6 dxe6 h3 Qd1 Qg8 Bxd6 Rxg2+ Kf1 cxd6 Qxd6 Rxf2+ Kxf2 Qg2+ Ke1 Qxf3 e7 Qc3+ Kf1 h2 Rb8+ Rxb8 Qxb8+ Kg7 Qe8! 
 31	 -0.40 	3.14G	2:20.92	Rg8 bxa5 bxa5 Qe1 g5 Bxa5 Rxa5 Qxa5 g4 Qxc7 Qxc7 Nxc7 gxf3 Bd1 fxg2 Ne6 Nhf6 Bf3 Nf8 Nxf8 Bxf8 a4 Nd7 a5 Ba6 Bxh5 Be7 Bf7 Rf8 Be6 Nc5 f3 Kg7 Rb6 Rh8 Ra2 Bxc4 Rxg2+ Kf6 Bg4 Rxh4 Rh2 Rxg4+ fxg4 
 31	 -0.55?	2.87G	2:08.34	Rg8 bxa5 bxa5 Qe1 Rg7 Bxa5 Nc5 Bb4 g5 Bxc5 gxh4 Nbd4 h3 Nf5 Bxf5 exf5 dxc5 Qxe5 Bg5 f6 Bxf6 Qxh5 Bxa1 Rxa1 Rb8? 
 31	 -0.85!	2.83G	2:06.42	Rg8 Kf1 Ndf6 Bc3 Bg4 Qd3 Qe7 Re1 Rg7 bxa5 bxa5 Rab1 g5 Nbd4 exd4 Qxd4 Bxf3 e5 dxe5 Rxe5 Bxg2+ Kxg2 gxh4+ Kh1 Qd7 Re6 Rg4 Qd3! 
 30	 -0.70!	1.61G	1:11.81	Rg8 Kf1 Ndf6 Bc3 Bg4 Qd3 Qe7 Re1 Rg7 Bb2 Rag8 Na7 g5 hxg5 Nxg5 Nc6 Qf8 Nxg5 Bxg5 f3! 
 29	 -0.56!	846.8M	0:37.74	Rg8 Kf1 Ndf6 Bc3 Bg4 Qd3 Qe7 Re1 Rg7 Kg1 Bxf3 Qxf3 g5 bxa5 bxa5 c5! 
 28	 -0.47 	680.8M	0:30.31	Rg8 Kf1 Ndf6 Bc3 Bg4 Qd3 Qe7 Re1 Bxf3 gxf3 Ne8 Ke2 Qxh4 Rh1 Qe7 bxa5 bxa5 Qd2 a4 Rag1 Nhf6 Qd1 Nd7 Bxa4 Nc5 Bc2 Nf6 Bb4 Na6 Bc3 g5 a4 Qd7 a5 Qg7 Kf1 Nc5 Ke2 
 27	 -0.30!	396.9M	0:17.32	Rg8 Kf1 Ndf6 Bc3 Bg4 Qd3 Bxf3 gxf3 axb4 a4! 
 26	 -0.04!	207.7M	0:09.20	Rg8 Kf1 Ndf6 Bc3 Bg4 Qd3 Nd7 Ng5 Bxg5 hxg5 Nxg5 f3 Nf6 bxa5 bxa5 Qe2 Bd7 Qf2 Bxb5 Rxb5 Nd7 Bxa5 Kg7 Ke2! 
 25	+0.65!	77.7M  	0:03.43	Rg8 bxa5 bxa5 Qe1 g5 Bxa5 Rxa5 Qxa5 g4 Ne1 Qxh4 Qxc7 Ng5 Qxd6 Bf8 Qc6 f3 g3 Qh3 Rb3! 
 24	+0.73 	56.3M  	0:02.47	Ndf6 bxa5 bxa5 Qe1 Ne8 Bxa5 Bg4 Nh2 Qxh4 f3 Qxe1+ Bxe1 Bd7 a4 g5 a5 g4 Bb4 Ra6 Nc3 Ng5 c5 gxf3 Nxf3 Nxf3+ gxf3 Rg8+ Kf2 dxc5 Bxc5 Rag6 
 22	+1.00 	21.6M  	0:00.92	Ndf6 bxa5 bxa5 Qe1 Ne8 Bxa5 Bg4 Nh2 Qxh4 f3 Qxe1+ Bxe1 Bd7 Nf1 g5 c5 g4 Nd2 gxf3 Nxf3 Rg8 Nxc7 Nxc7 cxd6 Nb5 
 20	+0.85 	16.9M  	0:00.72	Ndf6 bxa5 bxa5 Qe1 Bg4 Bxa5 Ne8 Nh2 Qxh4 f3 Qxe1+ Bxe1 Bc8 a4 g5 Nf1 g4 Nd2 Ng5 a5 Rg8 Kf1 Ba6 Bh4 gxf3 
 18	+0.78 	14.1M  	0:00.59	Ndf6 bxa5 bxa5 Qe1 Bg4 Nh2 a4 Bc3 Qe7 f3 Bc8 c5 dxc5 Ba5 Ne8 Bxc7 Nhf6 Bb6 Nd7 Ba5 c4 Bc3 Nef6 
 18	+1.03 	5.97M  	0:00.25	Ndf6 bxa5 bxa5 Qe1 Ne8 Bxa5 Bg4 Nh2 Qxh4 f3 Qxe1+ Bxe1 Bd7 Bc3 Bg7 Nf1 g5 Nd2 g4 c5 dxc5 Nc4 gxf3 Nxe5 Bxb5 
 17	+1.08 	5.30M  	0:00.22	Ndf6 bxa5 bxa5 Qe1 Ne8 Bxa5 Bg4 Nh2 Qxh4 f3 Qxe1+ Bxe1 Bd7 Nf1 g5 Nd2 g4 c5 Rg8 c6 Bc8 a4 gxf3 Nxf3 
 15	+1.31 	2.26M  	0:00.10	Ndf6 bxa5 bxa5 Qe1 Bg4 Bxa5 Ne8 Nh2 Qxh4 Nxg4 Qxg4 f3 Qg3 Qxg3 fxg3 Bxc7 Nxc7 Nxc7 
 14	+1.37 	2.04M  	0:00.09	Nhf6 Bc3 Kg8 Qe1 axb4 axb4 Ba6 Ba4 Ng4 Qe2 Ndf6 Bb2 Kh8 Nc3 Bb7 Ra3 Qe7 Rba1 
 12	+1.21 	922366	0:00.04	Nhf6 Nc3 Kg8 Na4 Ba6 Bc3 Ng4 Nb2 Bb7 Ba4 Rf7 Qc2 Kh7 Bb5 axb4 axb4 
 12	+1.29 	394122	0:00.02	Nhf6 Nc3 Kg8 Na4 axb4 axb4 Ng4 Nc3 Rxa1 Rxa1 Ndf6 Ra7 
 11	+1.36 	304799	0:00.02	Nhf6 Nc3 Bb7 Na4 axb4 axb4 Ng4 Nc3 Ndf6 Ng5 Qe7 f3 Rxa1 
 10	+1.38 	206840	0:00.01	Nhf6 Nc3 Bb7 Na4 axb4 axb4 Qc8 Nc3 Rxa1 Rxa1 
  8	+1.23 	98677  	0:00.01	Nhf6 Nc3 Bb7 Ba4 Kg8 g3 axb4 axb4 
  8	+1.31 	47268  	0:00.00	Nhf6 Qe1 Ba6 bxa5 Nc5 axb6 Bxb5 Rxb5 
  6	+1.36 	40833  	0:00.00	Nhf6 Qe1 Ba6 bxa5 Nc5 axb6 
  6	+1.39 	18042  	0:00.00	Bb7 g3 Nhf6 gxf4 Bxf4 Bxf4 
  5	+1.43 	9337    	0:00.00	Nhf6 Ng5 Bb7 f3 axb4 
  4	+1.17 	5524    	0:00.00	Nhf6 Ng5 Ng4 f3 Bxg5 
  3	+1.23 	3326    	0:00.00	Nhf6 bxa5 bxa5 
  2	+1.21 	2561    	0:00.00	Nhf6 bxa5 
  1	+1.22 	880      	0:00.00	Nhf6 
  0	# 

[peter]

Release candidate McCain 10:

Good to read, Michael!

BTW none of the (even newer) 9.9-compiles works in Fritz (14).
No problem in Shredder(13).
Maybe just a matter of long names of the .exe- files?

[AndyKHC]

So do I. Yet a clearly won position after 22...g5 is all we needed to prove and to exclude a second winner, which 22...Rg8 with 23...g5 could be yet too.
Anyhow 22...g5 has the edge I'd say, and I'd call it the more clearly game changing move. ...g5 as 23rd after 22...Rg8 might win too but maybe not quite as quickly.

I don't think Rg8 and g5 are interchangeable in move order. Playing 22... Rg8 allows white to gain counterplay on the queen side via 23. bxa5 g5 24. axb6! Nxb6 25. c5 g4 and I don't see a clear win for black though SF might proof be wrong at D45 .

Playing 23... g5 first forces white to parry immediate threats on the kings side as playing 24. bxa4 in response loses by force to 24... g6.

The beauty of this chaotic position is the tactics seem to be just tantalisingly beyond what the engines see at least on my less than state of the art PC

[peter]

Playing 22... Rg8 allows white to gain counterplay on the queen side via 23. bxa5 g5 24. axb6! Nxb6 25. c5 g4 and I don't see a clear win for black though SF might proof be wrong at D45.

I have your line in my .pgn, did you see? And there are some enhancements for Black after 25th still, I hadn't even seen then, when I made it, e.g. 28...Na6 instead of Nf8(?).
After some more FW-BW and your end of that line:
(22...Rg8 23. bxa5 (?!) g5 24. axb6 Nxb6 25. c5 g4)

[d]r1bq2rk/2p4n/1n1p3b/1NPPp2p/4PppP/P4N2/2BBQPP1/RR4K1 w - - 0 1

Analysis by CF_041018 x64 POP N:

Code: Select all

...
26.Sh2 Sd7 27.cxd6 Dxh4 28.dxc7 f3 29.Dd3 Lxd2 30.Dxd2 Sg5 31.Sd6 g3 32.Sf7+ Sxf7 33.Sxf3 gxf2+ 34.Dxf2 Dxf2+ 35.Kxf2 Ta7 36.Lb3 Sd6 37.Th1 Sf6 38.Thc1 Sfxe4+ 39.Kg1 Kg7 40.Sxe5 Kf6 41.Sf3 Tg7 42.Sd4 Taxc7 43.Tf1+ Sf5 44.Tad1 Kg5 45.Sxf5 Lxf5 46.d6 Tc3 47.La4 Sf6 48.Txf5+ Kxf5 49.d7 Sxd7 50.Lxd7+ Kf4 51.Kh2 Txa3 52.Tf1+ Ke3 53.Lh3 
  -+  (-1.79)   Tiefe: 35/66   00:10:12  12808MN
26.Sh2 Sd7 
  -+  (-1.88 --)   Tiefe: 36/60   00:10:28  13123MN
26.Nxe5 
  -+  (-1.79 ++)   Depth: 36/62   00:11:43  14683MN
...
26.Nxe5 dxe5 
  -+  (-2.15 --)   Depth: 36/64   00:14:11  17744MN
 

Do you really get a much higher eval (in d45 or at least 36 as you see, it has just started climbing at output) after move nr. 25 with 22...g5, I don't in my pv after this one move order neither.

It's mainly a matter of what you define as clear win, as long as you don't have at least two corr.games with reversed colours played out or a distance-to mate-eval after both candidate moves, 22...g5 and ...Rg8.

[AndyKHC]

Do you really get a much higher eval (in d45 or at least 36 as you see, it has just started climbing at output) after move nr. 25 with 22...g5, I don't in my pv after this one move order neither.

It's mainly a matter of what you define as clear win, as long as you don't have at least two corr.games with reversed colours played out or a distance-to mate-eval after both candidate moves, 22...g5 and ...Rg8.

I should explain I didn't let it run to d45 . I was simply saying that SF if it ran to d45 might find a win.

Having said that I did some further analysis of Rg8

[pgn] [FEN "r1bq1r1k/2pn3n/1p1p2pb/pN1Pp2p/1PP1Pp1P/P4N2/2BBQPP1/RR4K1 b - - 0 1"] 1... Rg8 2. bxa5 g5 3. axb6 Nxb6 4. c5 g4 5. Nh2 Nd7 (5... Nc4 6. Qxc4 Qxh4 7. cxd6 Ng5 8. Bc3 g3 9. Bxe5+ { with perpetual}) (5... f3 6. Qd1 (6. Qd3 Bxd2 7. cxb6 (7. g3 Bg5 8. cxb6 Bxh4 9. Nxc7 Bxg3) 7... Qxh4 8. Qxd2 Ng5 9. b7 Bxb7 10. Nxc7 Rac8 11. Rxb7 fxg2 12. Kxg2 Rg6) 6... Bxd2 7. g3 Nc4 (7... Bg5 8. cxb6 Bxh4 9. Nxc7 Rb8) 8. Bd3 Bg5 9. hxg5 Ne3 (9... Na5 10. c6 Nxg5) 10. Qc1 (10. fxe3 Nxg5 11. Kh1 h4) 10... Ng2) 6. cxd6 Qxh4 7. Nxc7 Ba6 8. Nxa6 f3 9. g3 fxe2 10. gxh4 Bxd2 11. Bd3 Nhf6 12. Nc7 Ra4 13. Bxe2 g3 14. Nf3 gxf2+ 15. Kxf2 Nxe4+ 16. Kf1 Ng3+ 17. Kf2 [/pgn]

That's the best I could see for black (better but not winning) in just a quick hour or so over lunch! I did look through what you posted but no sure I agreed with it