Karjakin-Anand 2006

[MikeGL]

Thanks for your DB Dann. Will check it now.

K11.2.2

Code: Select all

dep	score	nodes	time	(not shown:  tbhits	knps	seldep)
 25	 -3.11!	157.0M	1:24.68	Nc7 Qxc7 Rc8! 
 25	 -2.33!	129.9M	1:09.21	Nc7 Qxc7 Rc8! 
 25	 -1.77!	120.0M	1:03.69	Nc7 Qxc7 Rc8! 
 25	 -1.37!	96.5M  	0:52.31	Nc7 Qxc7 Rc8! 
 25	 -1.08!	77.0M  	0:43.02	Nc7 Qxc7 Rc8! 
 25	 -0.87!	74.7M  	0:41.81	Nc7 Qxc7 Rc8! 
 25	 -0.72!	73.1M  	0:41.00	Nc7 Qxc7 Rc8! 
 25	 -0.53?	64.6M  	0:36.91	Nf6 gxf6? 
 25	 -0.64?	62.0M  	0:35.48	Nf6 gxf6? 
 25	 -0.71!	60.9M  	0:34.90	Nf6 gxf6 Bxf6! 
 24	 -0.65 	55.5M  	0:31.84	Nf6 gxf6 Bxf6 Rd2 Rc8 Qxb3 Rb8 Bb6 Qc6 Rc1 Rc5 Rxc5 dxc5 Qb5 Qxb5 Nxb5 Rxb6 Bf1 Bxh4 Rd5 Bf6 Rxc5 h5 Nc3 Ng4 Be2 Bd4 Rb5 Rxb5 Nxb5 Be5 Nc3 Nf6 Bf3 
 24	 -0.65!	54.1M  	0:31.06	Nf6 gxf6 Bxf6! 
 24	 -0.57?	49.7M  	0:28.56	Nf6 gxf6? 
 24	 -0.64!	47.5M  	0:27.37	Nf6 gxf6 Bxf6! 
 23	 -0.58 	43.2M  	0:24.96	Nf6 gxf6 Bxf6 Rd4 Rxa3 bxa3 Qxa3 Qb2 Nc4 Qxa3 Nxa3+ Kc1 Rc8+ Kb2 Nc2 Rc1 Rc5 Rxc2 Rxc2+ Kxb3 Rxg2 Rxd6 Rg3 Rd3 Rg4 e5 Bxh4 Rc3 h5 Rc4 Be7 Rc8+ Kh7 Rc7 Re4 Rxe7 Rxe3+ Kc4 
 23	 -0.56!	40.9M  	0:23.65	Nf6 gxf6 Bxf6! 
 23	 -0.49?	37.4M  	0:21.73	Nf6 gxf6? 

Code: Select all

 27	+3.12!	282.0M	2:29.07	Nf2 Qxf2 Rf1! 
 27	+2.97!	250.5M	2:12.80	Nf2 Qxf2 Rf1! 
 27	+2.86!	212.9M	1:53.88	Nf2 Qxf2 Rf1! 
 27	+2.78!	205.6M	1:49.99	Nf2 Qxf2 Rf1! 
 26	+2.72 	191.6M	1:43.07	Nf2 Qxf2 Rf1 Qxd2 Nf5 Bf4 Nxh6+ gxh6 Rxh6 Qxe3 Rh4 Re7 Rhxf4 Qxf4 Rxf4 Rae8 Rf1 d4 Qh4 b3 g7 Rxg7 Qxd4 bxc2+ Kc1 c3 Qc4+ Kh7 Qxc3 Be4 Qxa5 Ree7 Qh5+ Kg8 Qc5 Kh7 a4 Bg2 Qxc2+ Rg6 Rf6 Be4 Qc5 
 26	+2.77!	184.7M	1:39.97	Nf2 Qxf2 Rf1! 
 26	+2.66!	179.0M	1:36.96	Nf2 Qxf2 Rf1! 
 26	+2.58!	172.5M	1:33.63	Nf2 Qxf2 Rf1! 
 25	+2.52 	162.5M	1:28.34	Nf2 Qxf2 Rf1 Qxd2 Nf5 Bf4 Nxh6+ gxh6 Rxh6 Qxe3 Rh4 Re7 Rhxf4 Qxf4 Rxf4 Rae8 Rf1 d4 Qh4 b3 g7 Rxg7 Qxd4 bxc2+ Kc1 c3 bxc3 Be4 Re1 Bg6 Rxe8+ Bxe8 Qd8 Kf8 Qxa5 Bg6 Qd8+ Kf7 Qd5+ Kf8 Qd6+ Kf7 a4 Bf5 Qd4 Rg3 
 25	+1.95!	147.7M	1:20.69	Nf2 Qxf2 Rf1! 
 25	+1.39!	115.4M	1:04.62	Nf2 Qxf2 Rf1! 
 25	+0.99!	111.2M	1:02.33	Nf2 Qxf2 Rf1! 
 25	+0.70!	108.4M	1:00.88	Nf2 Qxf2 Rf1! 
 25	+0.64 	97.8M  	0:55.72	Nc3 bxc3 Bxc3 Re7 Rf1 Qxg6 Rg1 Bg3 Qf3 Rf8 Rf4 Rxf4 exf4 Rf7 Rxg3 Qe4 Rg1 Qxf3 Nxf3 a4 Rg6 d4 Nxd4 Rxf4 a3 Kf7 Rg5 Be4 Ra5 Nf5 Nxf5 Rf1+ Ka2 Bxf5 Rxa4 
 25	+0.56?	91.2M  	0:52.14	Nc3 bxc3? 
 25	+0.67!	88.3M  	0:50.61	Nc3 bxc3 Bxc3! 
 25	+0.59?	80.1M  	0:45.93	Nc3 bxc3? 
 25	+0.66!	76.3M  	0:43.95	Nc3 bxc3 Bxc3! 
 24	+0.60 	59.4M  	0:34.49	Nc3 bxc3 Bxc3 Re7 Rf1 Qxg6 Rg1 Bg3 Qf3 Rf8 Rf4 Rxf4 exf4 Qg4 Qxg4 Nxg4 Rxg3 Bc8 Bxa5 Re4 Bc3 Nf6 a4 Rxf4 Rg5 Rg4 Rxg4 Nxg4 a5 Nf6 Nc6 Kf7 Bd4 Ne4 
 24	+0.58!	56.3M  	0:32.80	Nc3 bxc3 Bxc3! 
 24	+0.50?	52.7M  	0:30.70	Nc3 bxc3? 
 24	+0.57!	51.0M  	0:29.76	Nc3 bxc3 Bxc3! 
 23	+0.51 	44.8M  	0:26.23	Nc3 bxc3 Bxc3 Re7 Rf1 Qxg6 Rg1 Bg3 Qf3 Rf8 Rf4 Rxf4 exf4 Re4 Rxg3 Qf6 Qd1 Rxf4 Rg1 Rg4 Rf1 Qg6 Bxa5 Re4 Bc3 Qg4 Qxg4 Nxg4 Nf5 Ne3 Nxe3 Rxe3 Rg1 Re7 Bf6 
 23	+0.47?	42.0M  	0:24.65	Nc3 bxc3? 
 22	+0.53 	40.8M  	0:24.01	Nc3 bxc3 Bxc3 Re7 Rf1 Qxg6 Rg1 Bg3 Qf3 Rf8 Rf4 Rxf4 exf4 Rf7 b3 cxb3 axb3 Bc8 Qxg3 Qxg3 Rxg3 Nf5 Rg5 Nxd4 Bxd4 Rxf4 c3 Be6 Rxg7+ Kf8 
 22	+0.59!	39.0M  	0:23.00	Nc3 Re5 e4! 
 22	+0.44!	36.4M  	0:21.51	Nc3 Re5 e4! 

Thanks for the Nc7 and Nf2 lines Mike. Excellent search and eval of Komodo 11.2.


.

[Lyudmil Tsvetkov]

Nc7 might be best, but not only winning move.
d5 seemingly also wins:

You are correct, I will try to recheck the lines with d5.

Komodo 11.2.2 gives Anand's move almost instantaneously...and as the winning move. Impressive.
Tried with asmFish, Stockfish, Corchess, Houdini 5.01...

That's really impressive. Probably the tuned king safety eval of Komodo kicks in and it detects the winning attack quickly.
Maybe also hardcoded position (booked up), but I really think the eval of Komodo is really different and smells the kb1 attack quickly.

I mirrored the same position by clicking some buttons in Arena > Setup position
What happens if Komodo 11.2.2 is loaded with the same mirrored position,
[d]r3r1k1/1b4p1/3b1qPn/p2p4/1ppN3R/4P3/PPPB4/1KRN3Q w - - 4 24

Will it still find Nf2 move? If not, then it could be hardcoded or booked-up,
and not in K safety eval. But if it still finds Nf2 then it has an amazing eval
and search, in my opinion.




.

K11.2.2

Code: Select all

dep	score	nodes	time	(not shown:  tbhits	knps	seldep)
 25	 -3.11!	157.0M	1:24.68	Nc7 Qxc7 Rc8! 
 25	 -2.33!	129.9M	1:09.21	Nc7 Qxc7 Rc8! 
 25	 -1.77!	120.0M	1:03.69	Nc7 Qxc7 Rc8! 
 25	 -1.37!	96.5M  	0:52.31	Nc7 Qxc7 Rc8! 
 25	 -1.08!	77.0M  	0:43.02	Nc7 Qxc7 Rc8! 
 25	 -0.87!	74.7M  	0:41.81	Nc7 Qxc7 Rc8! 
 25	 -0.72!	73.1M  	0:41.00	Nc7 Qxc7 Rc8! 
 25	 -0.53?	64.6M  	0:36.91	Nf6 gxf6? 
 25	 -0.64?	62.0M  	0:35.48	Nf6 gxf6? 
 25	 -0.71!	60.9M  	0:34.90	Nf6 gxf6 Bxf6! 
 24	 -0.65 	55.5M  	0:31.84	Nf6 gxf6 Bxf6 Rd2 Rc8 Qxb3 Rb8 Bb6 Qc6 Rc1 Rc5 Rxc5 dxc5 Qb5 Qxb5 Nxb5 Rxb6 Bf1 Bxh4 Rd5 Bf6 Rxc5 h5 Nc3 Ng4 Be2 Bd4 Rb5 Rxb5 Nxb5 Be5 Nc3 Nf6 Bf3 
 24	 -0.65!	54.1M  	0:31.06	Nf6 gxf6 Bxf6! 
 24	 -0.57?	49.7M  	0:28.56	Nf6 gxf6? 
 24	 -0.64!	47.5M  	0:27.37	Nf6 gxf6 Bxf6! 
 23	 -0.58 	43.2M  	0:24.96	Nf6 gxf6 Bxf6 Rd4 Rxa3 bxa3 Qxa3 Qb2 Nc4 Qxa3 Nxa3+ Kc1 Rc8+ Kb2 Nc2 Rc1 Rc5 Rxc2 Rxc2+ Kxb3 Rxg2 Rxd6 Rg3 Rd3 Rg4 e5 Bxh4 Rc3 h5 Rc4 Be7 Rc8+ Kh7 Rc7 Re4 Rxe7 Rxe3+ Kc4 
 23	 -0.56!	40.9M  	0:23.65	Nf6 gxf6 Bxf6! 
 23	 -0.49?	37.4M  	0:21.73	Nf6 gxf6? 

Code: Select all

 27	+3.12!	282.0M	2:29.07	Nf2 Qxf2 Rf1! 
 27	+2.97!	250.5M	2:12.80	Nf2 Qxf2 Rf1! 
 27	+2.86!	212.9M	1:53.88	Nf2 Qxf2 Rf1! 
 27	+2.78!	205.6M	1:49.99	Nf2 Qxf2 Rf1! 
 26	+2.72 	191.6M	1:43.07	Nf2 Qxf2 Rf1 Qxd2 Nf5 Bf4 Nxh6+ gxh6 Rxh6 Qxe3 Rh4 Re7 Rhxf4 Qxf4 Rxf4 Rae8 Rf1 d4 Qh4 b3 g7 Rxg7 Qxd4 bxc2+ Kc1 c3 Qc4+ Kh7 Qxc3 Be4 Qxa5 Ree7 Qh5+ Kg8 Qc5 Kh7 a4 Bg2 Qxc2+ Rg6 Rf6 Be4 Qc5 
 26	+2.77!	184.7M	1:39.97	Nf2 Qxf2 Rf1! 
 26	+2.66!	179.0M	1:36.96	Nf2 Qxf2 Rf1! 
 26	+2.58!	172.5M	1:33.63	Nf2 Qxf2 Rf1! 
 25	+2.52 	162.5M	1:28.34	Nf2 Qxf2 Rf1 Qxd2 Nf5 Bf4 Nxh6+ gxh6 Rxh6 Qxe3 Rh4 Re7 Rhxf4 Qxf4 Rxf4 Rae8 Rf1 d4 Qh4 b3 g7 Rxg7 Qxd4 bxc2+ Kc1 c3 bxc3 Be4 Re1 Bg6 Rxe8+ Bxe8 Qd8 Kf8 Qxa5 Bg6 Qd8+ Kf7 Qd5+ Kf8 Qd6+ Kf7 a4 Bf5 Qd4 Rg3 
 25	+1.95!	147.7M	1:20.69	Nf2 Qxf2 Rf1! 
 25	+1.39!	115.4M	1:04.62	Nf2 Qxf2 Rf1! 
 25	+0.99!	111.2M	1:02.33	Nf2 Qxf2 Rf1! 
 25	+0.70!	108.4M	1:00.88	Nf2 Qxf2 Rf1! 
 25	+0.64 	97.8M  	0:55.72	Nc3 bxc3 Bxc3 Re7 Rf1 Qxg6 Rg1 Bg3 Qf3 Rf8 Rf4 Rxf4 exf4 Rf7 Rxg3 Qe4 Rg1 Qxf3 Nxf3 a4 Rg6 d4 Nxd4 Rxf4 a3 Kf7 Rg5 Be4 Ra5 Nf5 Nxf5 Rf1+ Ka2 Bxf5 Rxa4 
 25	+0.56?	91.2M  	0:52.14	Nc3 bxc3? 
 25	+0.67!	88.3M  	0:50.61	Nc3 bxc3 Bxc3! 
 25	+0.59?	80.1M  	0:45.93	Nc3 bxc3? 
 25	+0.66!	76.3M  	0:43.95	Nc3 bxc3 Bxc3! 
 24	+0.60 	59.4M  	0:34.49	Nc3 bxc3 Bxc3 Re7 Rf1 Qxg6 Rg1 Bg3 Qf3 Rf8 Rf4 Rxf4 exf4 Qg4 Qxg4 Nxg4 Rxg3 Bc8 Bxa5 Re4 Bc3 Nf6 a4 Rxf4 Rg5 Rg4 Rxg4 Nxg4 a5 Nf6 Nc6 Kf7 Bd4 Ne4 
 24	+0.58!	56.3M  	0:32.80	Nc3 bxc3 Bxc3! 
 24	+0.50?	52.7M  	0:30.70	Nc3 bxc3? 
 24	+0.57!	51.0M  	0:29.76	Nc3 bxc3 Bxc3! 
 23	+0.51 	44.8M  	0:26.23	Nc3 bxc3 Bxc3 Re7 Rf1 Qxg6 Rg1 Bg3 Qf3 Rf8 Rf4 Rxf4 exf4 Re4 Rxg3 Qf6 Qd1 Rxf4 Rg1 Rg4 Rf1 Qg6 Bxa5 Re4 Bc3 Qg4 Qxg4 Nxg4 Nf5 Ne3 Nxe3 Rxe3 Rg1 Re7 Bf6 
 23	+0.47?	42.0M  	0:24.65	Nc3 bxc3? 
 22	+0.53 	40.8M  	0:24.01	Nc3 bxc3 Bxc3 Re7 Rf1 Qxg6 Rg1 Bg3 Qf3 Rf8 Rf4 Rxf4 exf4 Rf7 b3 cxb3 axb3 Bc8 Qxg3 Qxg3 Rxg3 Nf5 Rg5 Nxd4 Bxd4 Rxf4 c3 Be6 Rxg7+ Kf8 
 22	+0.59!	39.0M  	0:23.00	Nc3 Re5 e4! 
 22	+0.44!	36.4M  	0:21.51	Nc3 Re5 e4! 

why should it take 2 more plies and double the time with the inverted position?

SF really does not solve this?

[Vinvin]

This is just a revisit on Anand's double piece sacrifice starting with 24...Nc7! which wins on all variations....

This is just a revisit on this difficult position, because I remembered this was heavily analysed
here previously but on weaker hardware and on a bit weaker engine.

I reran this positions with a recent version of and got good surprises !

All on my 6*4GHz,
4 runs with Stockfish_170810 : 2m52s, 5m46s, 56s and 2m46s

Code: Select all

FEN: q3nrk1/4bppp/3p4/r3nPP1/4P2P/NpQ1B3/1P4B1/1K1R3R b - - 0 1

Stockfish_170810_x64_modern:
...
 36/69	01:56	 1 237 114k	10 575k	-0,63	1. ... Nf6 2.gxf6 Bxf6 3.Rd4 Rxa3 4.bxa3 Qxa3 5.Qb2 Nc4 6.Qxa3 Nxa3+ 7.Kc1 Rc8+ 8.Kd2 Bxd4 9.Bxd4 Rc2+ 10.Kd3 Rxg2 11.Ra1 Ra2 12.Rc1 Nc2 13.Bc3 g6 14.Rb1 Ra3 15.fxg6 fxg6 16.h5 gxh5 17.Rg1+ Kf8 18.Rh1 Ra7 19.Rxh5 Rb7 20.Bb2 Nb4+ 21.Kc4 Nc6 22.Rh6 Ne5+ 23.Kc3 Ng6 24.Ba3 Kg7 25.Rh2 Kf6 26.Bxd6 h5 27.Bb4 h4 28.Kxb3 Ke5 29.Kc3 Kxe4 30.Bd6 Rd7 31.Bb4 Rc7+ 32.Kd2
 37/66+	02:16	 1 439 123k	10 550k	-0,55	1. ... Nf6 2.gxf6
 37/68-	02:52	 1 829 340k	10 597k	-0,63	1. ... Nc7
 37/68-	05:47	 3 738 348k	10 755k	-4,81	1. ... Nc7


Stockfish_170810_x64_modern:
...
 39/68	04:31	 2 975 042k	10 948k	-0,55	1. ... Nf6 2.gxf6 Bxf6 3.Rd4 Rxa3 4.bxa3 Qxa3 5.Qb2 Nc4 6.Qxa3 Nxa3+ 7.Kc1 Rb8 8.Ra4 b2+ 9.Kd2 b1R 10.Rxb1 Nxb1+ 11.Kc2 g6 12.Bf3 Kg7 13.Ra2 Be5 14.fxg6 hxg6 15.h5 Rb7 16.hxg6 Kxg6 17.Ra8 Rb2+ 18.Kd3 Rb3+ 19.Ke2 Nc3+ 20.Kd2 Rb2+ 21.Kd3 Na2 22.Bd1 Nb4+ 23.Kc4 Nc2 24.Bd2 Ne1 25.Bxe1 Rb1 26.Rg8+ Kh7 27.Rg2 Rxd1 28.Bd2 Rh1 29.Kd3 Rh3+ 30.Kc2 Ra3 31.Rf2 Kg7 32.Kd1 Rg3 33.Kc2
 40/74-	05:46	 3 770 371k	10 874k	-0,63	1. ... Nc7
 40/74-	05:56	 3 872 687k	10 870k	-0,70	1. ... Nc7
 40/74-	08:19	 5 471 206k	10 950k	-3,01	1. ... Nc7


Stockfish_170810_x64_modern:
...
 33/59	00:47	 516 615k	10 971k	-0,74	1. ... Nf6 2.gxf6 Bxf6 3.Rd4 Rxa3 4.bxa3 Qxa3 5.Qb2 Nc4 6.Qxa3 Nxa3+ 7.Kb2 Nc2 8.Kxb3 Nxd4+ 9.Kc4 Nc2 10.Bd2 Rb8 11.Rc1 Na1 12.Bf4 Be5 13.Be3 Bb2 14.Rd1 Nc2 15.Kd3 Nxe3 16.Kxe3 Be5 17.Bf1 Rb3+ 18.Bd3 Ra3 19.Ke2 g6 20.fxg6 hxg6 21.Rc1 Kg7 22.Rc7 Ra2+ 23.Rc2 Ra4 24.Rc6 Rb4 25.Ra6 Kf6
 34/59-	00:56	 621 725k	11 065k	-0,82	1. ... Nc7
 34/59-	00:57	 633 881k	11 072k	-0,89	1. ... Nc7
 34/59-	01:53	 1 285 230k	11 281k	-4,02	1. ... Nc7
 34/73	02:33	 1 745 183k	11 379k	-4,50	1. ... Nc7 2.Bf1 Rc8 3.Rh3 Rxa3 4.bxa3 Nd5 5.Qxb3 Rb8 6.Bd4 Nf4 7.Bb5 Qxe4+ 8.Ka2 Nxh3 9.a4 Qxh4 10.g6 hxg6 11.Bxe5 dxe5 12.fxg6 Qf2+ 13.Kb1 Ng5 14.Qc2 Qf4 15.Ka2 e4 16.Bc4 Qf3 17.Bb3 Kf8 18.Rb1 Ra8 19.Rb2 fxg6 20.Qh2 Rxa4+ 21.Bxa4 Qa3+ 22.Kb1 Qxa4 23.Qb8+ Kf7 24.Qb5 Qxb5 25.Rxb5
 35/47-	02:42	 1 852 833k	11 386k	-4,57	1. ... Nc7
 35/47-	02:45	 1 890 305k	11 388k	-4,65	1. ... Nc7
 35/50-	02:55	 2 005 164k	11 394k	-4,76	1. ... Nc7


Stockfish_170810_x64_modern:
...
 37/62-	02:18	 1 464 063k	10 588k	-0,45	1. ... Nf6
 37/62-	02:46	 1 764 339k	10 610k	-0,56	1. ... Nc7
 37/62-	05:08	 3 359 811k	10 905k	-4,63	1. ... Nc7

[Vinvin]

More with Stockfish_170818 and Stockfish_170818_matefinder

Stockfish_170818 : 7m35s, 1m58s, 1m33s, 1m37s
Stockfish_170818_matefinder : 19s, 13s, 15s, 7s

Code: Select all

Stockfish_170818_x64_modern:
...
 39/67+	05:04	 3 250 617k	10 663k	-0,42	1. ... Nf6 2.gxf6
 39/67	05:24	 3 458 931k	10 674k	-0,42	1. ... Nf6 2.gxf6 Bxf6 3.Rd4 Rxa3 4.bxa3 Qxa3 5.Qb2 Nc4 6.Qxa3 Nxa3+ 7.Kc1 Rc8+ 8.Kd2 Rc2+ 9.Kd3 Bxd4 10.Bxd4 Rxg2 11.Ra1 Ra2 12.Rc1 Rc2 13.Ra1 b2 14.Bxb2 Rxb2 15.Rxa3 h5 16.Ra6 Rh2 17.Rxd6 Rh3+ 18.Kd4 Rxh4 19.Ke3 Rh3+ 20.Kf4 f6 21.Rd1 Kh7 22.Rg1 Rc3 23.Rd1 Kh6 24.Rg1 Rd3 25.Rg6+ Kh7 26.Rg1 Rb3 27.Rh1 Kh6 28.Rg1 Rb2 29.Kg3 Rc2 30.Kf4 Rc3 31.Rh1 Rc8
 40/66-	07:35	 4 898 820k	10 754k	-0,50	1. ... Nc7
 40/66-	07:36	 4 907 781k	10 754k	-0,57	1. ... Nc7
 40/66-	08:20	 5 396 661k	10 778k	-2,23	1. ... Nc7


Stockfish_170818_x64_modern:
...
 35/56	01:08	 752 467k	11 020k	-0,72	1. ... Nf6 2.gxf6 Bxf6 3.Rd4 Rxa3 4.bxa3 Qxa3 5.Qb2 Nc4 6.Qxa3 Nxa3+ 7.Kb2 Nc2 8.Kxb3 Nxd4+ 9.Kc4 Nc2 10.Bd2 Rb8 11.Rc1 Nd4 12.h5 Nb3 13.Rc2 Nxd2+ 14.Rxd2 Be5 15.Ra2 Rc8+ 16.Kb5 Kf8 17.Ra7 Rc5+ 18.Kb4 Bd4 19.Rd7 Rc1 20.Kb5 Be5 21.Bf3 Ke8 22.Rb7 Rb1+ 23.Ka6 Rxb7 24.Kxb7
 36/53-	01:14	 814 068k	10 982k	-0,80	1. ... Nf6
 36/59-	01:58	 1 287 568k	10 841k	-0,87	1. ... Nc7
 36/59-	03:48	 2 431 072k	10 658k	-4,01	1. ... Nc7


Stockfish_170818_x64_modern:
...
 35/62-	01:19	 844 146k	10 594k	-0,55	1. ... Nf6
 35/62-	01:33	 992 524k	10 621k	-0,84	1. ... Nc7
 35/62-	02:22	 1 529 539k	10 763k	-3,19	1. ... Nc7


Stockfish_170818_x64_modern:
...
 36/59-	01:18	 824 806k	10 537k	-0,73	1. ... Nf6
 36/59-	01:37	 1 042 634k	10 643k	-0,84	1. ... Nc7
 36/59-	02:18	 1 475 343k	10 682k	-3,04	1. ... Nc7





Stockfish_170818_matefinder:
...
 27/46-	00:15	 148 490k	9 342k	-0,73	1. ... Nf6
 27/46-	00:19	 179 318k	9 425k	-0,81	1. ... Nc7
 27/46-	00:30	 297 536k	9 630k	-3,12	1. ... Nc7
 27/46	00:33	 319 485k	9 647k	-3,28	1. ... Nc7 2.Qxc7 Rc8 3.Qxa5 Qxa5 4.Rc1 Rxc1+ 5.Rxc1 Ng4 6.Rc8+ Bf8 7.Bc1 Ne5 8.Rc3 Qb6 9.Re3 Qd4 10.Rxb3 Qf2 11.Bh3 Qxh4 12.Nc2 Qxe4 13.Re3 Qh4 14.f6 gxf6 15.gxf6 h5 16.Bg2 Qxf6 17.Rg3+ Bg7 18.Rg5 h4 19.Nd4 Ng6
 28/52-	00:36	 352 291k	9 661k	-3,35	1. ... Nc7
 28/52-	00:37	 365 076k	9 676k	-3,43	1. ... Nc7
 28/52-	00:42	 420 554k	9 794k	-3,92	1. ... Nc7
 28/52	00:43	 429 523k	9 815k	-3,72	1. ... Nc7 2.Qxc7 Rc8 3.Qxa5 Qxa5 4.Rc1 Rxc1+ 5.Rxc1 Ng4 6.Rc8+ Bf8 7.Bc1 Qe1 8.Rc3 Qg1 9.Bf3 Ne5 10.Be2 d5 11.Rxb3 Qh1 12.Ba6 Qxe4+ 13.Ka1 Qxh4 14.Rc3 Qf2 15.Be3 Qxf5 16.Rc8 Nd3
 29/37-	00:45	 450 308k	9 855k	-3,80	1. ... Nc7
 29/52-	00:47	 465 646k	9 881k	-3,87	1. ... Nc7
 29/53-	00:57	 568 959k	9 951k	-4,15	1. ... Nc7
 29/53	01:01	 617 712k	9 992k	-4,11	1. ... Nc7 2.Qxc7 Rc8 3.Qxa5 Qxa5 4.Rc1 Rxc1+ 5.Rxc1 Ng4 6.Rc8+ Bf8 7.Bc1 Qe1 8.Rc3 Qg1 9.Bf3 Ne5 10.Be2 d5 11.Rxb3 Qh1 12.Ba6 Qxe4+ 13.Ka1 Qxh4 14.Rc3 Qe1 15.Ka2 d4 16.Rc8 d3 17.Bc4 Nxc4 18.Rxc4 Qa5

Stockfish_170818_matefinder:
...
 25/47	00:11	 108 485k	9 211k	-0,55	1. ... Nf6 2.gxf6 Bxf6 3.Rd4 Rxa3 4.bxa3 Qxa3 5.Qb2 Nc4 6.Qxa3 Nxa3+ 7.Kc1 Rc8+ 8.Kb2 Nc2 9.Rc1 Rc5 10.Bg1 Bxd4+ 11.Kxb3 Rc3+ 12.Kb2 Rc6+ 13.Bxd4 Nxd4 14.Rxc6 Nxc6 15.Kc3 Kf8 16.Kc4 Ke7 17.Bf1 Ne5+ 18.Kd5 Nf3 19.h5 Ne5
 26/44-	00:13	 126 170k	9 274k	-0,62	1. ... Nc7
 26/44-	00:13	 129 051k	9 277k	-0,70	1. ... Nc7
 26/62-	00:22	 214 771k	9 573k	-3,00	1. ... Nc7
 26/62	00:32	 311 621k	9 643k	-3,05	1. ... Nc7 2.Bf1 Qxe4+ 3.Bd3 Qa8 4.Bb6 Rxa3 5.bxa3 Nd5 6.Qa5 Nxb6 7.Qxa8 Rxa8 8.Rh3 f6 9.Be4 Rxa3 10.g6 hxg6 11.fxg6 d5 12.Bxd5+ Nxd5 13.Rxd5 Nxg6 14.Rb5 Ra4 15.Rhxb3 Nf4 16.Kc2 Ne6 17.Kd1 Nd4 18.Rb8+ Kf7 19.R3b6 f5 20.Ke1 Ra1+ 21.Rb1 Bxh4+ 22.Kf1
 27/51-	00:33	 322 024k	9 642k	-3,13	1. ... Nc7
 27/51-	00:34	 334 219k	9 668k	-3,20	1. ... Nc7
 27/51-	00:35	 346 832k	9 690k	-3,47	1. ... Nc7
 

Stockfish_170818_matefinder:
...
 25/44	00:09	 84 089k	9 103k	-0,53	1. ... Nf6 2.gxf6 Bxf6 3.Rd2 Rc8 4.Qxb3 Rb8 5.Bb6 Qc6 6.Rc1 Rc5 7.Rxc5 dxc5 8.Qb5 Qxb5 9.Nxb5 Rxb6 10.Bf1 Bxh4 11.Rd5 Bf6 12.Rxc5 h5 13.Nc3 Rb4 14.Rb5 Rxb5 15.Nxb5 g5 16.fxg6 fxg6 17.Nd6 Kg7 18.Kc2 g5 19.b4 g4
 26/44-	00:09	 90 796k	9 135k	-0,60	1. ... Nf6
 26/44-	00:10	 94 881k	9 163k	-0,68	1. ... Nf6
 26/50-	00:15	 150 135k	9 458k	-0,79	1. ... Nc7
 26/50-	00:19	 183 737k	9 490k	-1,46	1. ... Nc7
 26/50	00:20	 196 062k	9 497k	-1,35	1. ... Nc7 2.Qxc7 Rc8 3.Qxe7 Nc4 4.Bc5 Nxa3+ 5.bxa3 Rxa3 6.Qxd6 Ra1+ 7.Kb2 Ra2+ 8.Kb1 Rxg2 9.Ba7 Re8 10.Qd4 Ra2 11.g6 Rxa7 12.gxf7+ Rxf7 13.Rh2 Rxe4 14.Qd8+ Re8 15.Qxa8 Rxa8 16.Rb2 Rb8 17.Rd3 Rxf5 18.Rbxb3 Rxb3+ 19.Rxb3 Rf4 20.Kc2 Rc4+ 21.Kd2 Rxh4
 27/24-	00:26	 252 507k	9 613k	-1,42	1. ... Nc7
 27/34-	00:26	 252 935k	9 615k	-1,50	1. ... Nc7
 27/40-	00:31	 305 622k	9 645k	-3,16	1. ... Nc7
 27/48	00:37	 368 208k	9 704k	-3,25	1. ... Nc7 2.Bf1 Qxe4+ 3.Bd3 Qa8 4.Bb6 Rxa3 5.bxa3 Nd5 6.Qa5 Nxb6 7.Qxa8 Rxa8 8.Rh3 Rxa3 9.Bf1 Na4 10.Rd4 Nc5 11.Bg2 Ra2 12.Bd5 Rf2 13.Rd1 h6 14.f6 gxf6 15.gxh6 f5 16.Bxb3 Nxb3 17.Rxb3 Kh7 18.Rb7 Bxh4 19.Rxd6
 28/51-	00:41	 404 203k	9 703k	-3,33	1. ... Nc7
 28/51-	00:43	 417 781k	9 714k	-3,40	1. ... Nc7


Stockfish_170818_matefinder:
...
 22/41	00:07	 69 935k	9 492k	-0,46	1. ... Nf6 2.gxf6 Bxf6 3.Rd2 Rc8 4.Qxb3 Rb8 5.Bb6 Qc6 6.Rc1 Rc5 7.Rxc5 dxc5 8.h5 c4 9.Qb5 Qxb5 10.Nxb5 Rxb6 11.Nc3 Nd3 12.Nd5 Rxb2+ 13.Rxb2 Bxb2 14.Nb6 Bd4 15.Nxc4 Kf8 16.Nd6
 23/44-	00:07	 73 968k	9 557k	-0,53	1. ... Nc7
 23/44-	00:07	 74 841k	9 559k	-0,61	1. ... Nc7
 23/46+	00:08	 81 091k	9 634k	-0,38	1. ... Nc7 2.Qxc7
 23/46-	00:08	 81 815k	9 634k	-0,55	1. ... Nc7
 23/46-	00:10	 100 178k	9 692k	-2,59	1. ... Nc7
 23/46	00:11	 108 484k	9 753k	-2,77	1. ... Nc7 2.Qxc7 Rc8 3.Qxa5 Qxa5 4.Rc1 Rxc1+ 5.Rxc1 h6 6.f6 gxf6 7.gxh6 d5 8.exd5 Qa4 9.Bh1 Kh7 10.Rg1 Ng4 11.Bc1 f5 12.Bf3 Qd4 13.Rd1 Qf2 14.d6 Bxd6
 24/43-	00:11	 116 127k	9 740k	-2,85	1. ... Nc7
 24/43-	00:12	 117 848k	9 741k	-2,92	1. ... Nc7
 24/43-	00:12	 125 340k	9 750k	-3,41	1. ... Nc7
 24/43	00:14	 139 506k	9 754k	-3,63	1. ... Nc7 2.Qxc7 Rc8 3.Qxa5 Qxa5 4.Rc1 Rxc1+ 5.Rxc1 h6 6.gxh6 gxh6 7.Rc3 Bxh4 8.Rxb3 Qe1+ 9.Ka2 Qe2 10.Bh3 Bg5 11.Rb8+ Kh7 12.Bd4 Qxe4 13.Bxe5 dxe5 14.Rb3 Be7 15.Bf1 Qxf5 16.Bc4 Bxa3 17.Kxa3
 25/45+	00:14	 146 557k	9 793k	-3,56	1. ... Nc7 2.Qxc7
 25/45+	00:15	 147 174k	9 793k	-3,48	1. ... Nc7 2.Qxc7
 25/45-	00:15	 148 703k	9 800k	-3,56	1. ... Nc7
 25/45+	00:15	 153 870k	9 821k	-3,37	1. ... Nc7 2.Qxc7
 25/45-	00:16	 157 984k	9 819k	-3,54	1. ... Nc7
 25/45-	00:17	 171 424k	9 845k	-3,83	1. ... Nc7
 25/45	00:19	 188 012k	9 864k	-3,96	1. ... Nc7 2.Qxc7 Rc8 3.Qxa5 Qxa5 4.Rc1 Rxc1+ 5.Rxc1 h6 6.gxh6 gxh6 7.Rc3 Bxh4 8.Rxb3 Qe1+ 9.Ka2 Qe2 10.Bh3 Bg5 11.Bd4 Nc6 12.Bc3 Qxe4 13.f6 d5 14.Rb5 d4 15.Bf5 Qe8 16.Bb4 Bxf6 17.Bd6 Qe2 18.Rb3 Be7 19.Bxe7 Qxe7 20.Rb6
 26/39	00:20	 204 191k	9 877k	-3,97	1. ... Nc7 2.Qxc7 Rc8 3.Qxa5 Qxa5 4.Rc1 Rxc1+ 5.Rxc1 h6 6.gxh6 gxh6 7.Rc3 Bxh4 8.Rxb3 Qe1+ 9.Ka2 Qe2 10.Bh3 Bg5 11.Bd4 Nc6 12.Bc3 Qxe4 13.f6 d5 14.Rb5 d4 15.Bf5 Qe8 16.Bb4 Bxf6 17.Bd6 Qe2 18.Rb3 Be7 19.Bxe7 Qxe7 20.Rb6 Qc5
 27/47+	00:22	 225 714k	9 920k	-3,89	1. ... Nc7 2.Bf1
 27/47+	00:23	 233 157k	9 896k	-3,82	1. ... Nc7 2.Bf1
 27/47-	00:24	 240 223k	9 891k	-3,89	1. ... Nc7
 27/52	00:26	 262 460k	9 908k	-4,00	1. ... Nc7 2.Bf1 Rc8 3.Rh3 Rxa3 4.bxa3 Nd5 5.Qxb3 Rb8 6.Bd4 Nf4 7.Bb5 Nxh3 8.Ka2 Qxe4 9.a4 Qxh4 10.g6 Ng5 11.Qc2 Qg4 12.gxh7+ Nxh7 13.Bb2 Qf3 14.Rd4 Nf8 15.Rd1 Rc8 16.Qxc8 Qxd1 17.Qb7 Bg5
 28/38-	00:29	 288 225k	9 916k	-4,07	1. ... Nc7
 28/38	00:30	 306 130k	9 914k	-4,13	1. ... Nc7 2.Bf1 Rc8 3.Rh3 Rxa3 4.bxa3 Nd5 5.Qxb3 Rb8 6.Bb6 Rxb6 7.Rxd5 Rxb3+ 8.Rxb3 Qa4 9.Re3 Qa7 10.Rc3 Qg1 11.Rd1 Qh1 12.Ka2 Qxh4 13.Bb5 Bf8 14.Rc8 Qf2+ 15.Ka1 Qf3 16.Rd2 Qe3 17.Re2 Qxg5 18.Ka2
 29/50-	00:35	 355 478k	9 962k	-4,20	1. ... Nc7
 29/51-	00:40	 400 974k	9 994k	-4,28	1. ... Nc7
 29/51	00:45	 455 397k	10 005k	-4,32	1. ... Nc7 2.Bf1 Rc8 3.Rh3 Rxa3 4.bxa3 Nd5 5.Qxb3 Rb8 6.Bb6 Rxb6 7.Rxd5 Rxb3+ 8.Rxb3 Qa4 9.Re3 Qa7 10.Rc3 Qg1 11.Rd1 Qh1 12.Ka2 Qxh4 13.Rc8+ Bf8 14.Bb5 Qf2+ 15.Ka1 Qg3 16.a4 Qxg5 17.Rxd6 Nc4 18.Bxc4 Qg1+ 19.Kb2 Qh2+ 20.Kc3 Qxd6
 30/47+	00:46	 468 498k	10 019k	-4,24	1. ... Nc7 2.Bf1
 30/47+	00:48	 483 186k	9 958k	-4,17	1. ... Nc7 2.Bf1
 30/47-	00:49	 490 734k	9 956k	-4,24	1. ... Nc7
 30/53	00:53	 533 679k	9 987k	-4,15	1. ... Nc7 2.Bf1 Rc8 3.Rh3 Rxa3 4.bxa3 Nd5 5.Qxb3 Rb8 6.Bb6 Rxb6 7.Rxd5 Rxb3+ 8.Rxb3 Qa4 9.Re3 Qa7 10.Rc3 Qg1 11.Rd1 Qh1 12.Ka2 Bf8 13.Rc8 Qf3 14.Rdc1 d5 15.R8c3 Qxe4 16.f6 Qxh4 17.R1c2 gxf6 18.gxf6 Qxf6 19.Bb5 Nc4 20.Bxc4 dxc4 21.Rg2+ Kh8 22.Rxc4
 31/54-	00:57	 574 990k	9 990k	-4,23	1. ... Nc7
 31/54-	01:01	 618 835k	10 004k	-4,30	1. ... Nc7
 31/54-	01:07	 681 792k	10 045k	-4,42	1. ... Nc7

[MikeGL]

Thanks Vincent for this multiple runs. Didn't know sf-matefinder can play
decent moves too. I thought it is like ChestUCI engine. Will download and
try this matefinder too.


.

[Vinvin]

... Didn't know sf-matefinder can play
decent moves too.
...

Sure, SF-MF is only 20-30 Elo below regular SF.
That means above 3300 Elo ...
I recommend Matefinder version to analyze any humans games, it spots tactic way faster and overlook less obvious things. As McBrain does too.