Vachier-Lagrave - Naiditsch, GRENKE 2019 R3 : 25.Nf6+ !

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Vinvin
Posts: 4212
Joined: Thu Mar 09, 2006 8:40 am
Full name: Vincent Lejeune

Vachier-Lagrave - Naiditsch, GRENKE 2019 R3 : 25.Nf6+ !

Post by Vinvin » Wed Apr 24, 2019 11:27 am


SF has trouble to see 25.Nf6+ !

After the move 25.Nf6+, SF sees an advantage for white :

Code: Select all

rn2kr2/1pp1b1p1/4pN2/1Pp1P2p/p1P2P1P/P7/1B4P1/3RR1K1 b - - 2 25

Stockfish_190305_x64_modern:
...
 32/59	00:07	 55.800k	7.663k	-0,33	25. ... gxf6 26.exf6 Rxf6 27.Bxf6 Bxf6 28.Rxe6+ Kf7 29.Re4 Bd4+ 30.Rexd4 cxd4 31.Rxd4 Ke7 32.Re4+ Kd8 33.Re5 Nd7 34.Rxh5 Ke7 35.Kf2 Nb6 36.Rh7+ Kd6 37.c5+ Kxc5 38.Rxc7+ Kxb5 39.Rxb7 Kc6 40.Rg7 Nc4 41.Rg3 Kd5 42.h5 Ke4 43.h6 Rh8 44.Rh3 Rh7 45.Rh5 Nxa3 46.Re5+ Kxf4 47.Ra5 Nc2 48.g3+ Ke4 49.Rxa4+ Kd3 50.Ra6 Nd4 51.g4 Rf7+ 52.Kg2
 33/60	00:08	 65.252k	7.656k	-0,31	25. ... gxf6 26.exf6 Rxf6 27.Bxf6 Bxf6 28.Rxe6+ Kf7 29.Re4 Bd4+ 30.Rexd4 cxd4 31.Rxd4 Ke7 32.Re4+ Kd8 33.Re5 Nd7 34.Rxh5 Ke7 35.Kf2 Nb6 36.Rh7+ Kd6 37.c5+ Kxc5 38.Rxc7+ Kxb5 39.Rxb7 Kc6 40.Rg7 Nc4 41.Rg3 Kd5 42.h5 Ke4 43.h6 Kxf4 44.h7 Rh8 45.Rg7 Nd6 46.Ra7 Ne4+ 47.Kg1 Nf6 48.Rxa4+ Kg3 49.Rb4 Rxh7 50.a4 Ra7 51.Rb3+ Kf4 52.Rb4+ Kg5 53.Rb5+ Kg4
 34/59	00:12	 95.925k	7.642k	-0,38	25. ... gxf6 26.exf6 Rxf6 27.Bxf6 Bxf6 28.Rxe6+ Kf7 29.Re4 Bd4+ 30.Rexd4 cxd4 31.Rxd4 Ke7 32.Re4+ Kd8 33.Re5 Nd7 34.Rxh5 Ke7 35.Kf2 Nb6 36.Rh7+ Kd6 37.c5+ Kxc5 38.Rxc7+ Kxb5 39.Rxb7 Kc5 40.Rg7 Nc4 41.Rg3 Kd5 42.h5 Ke4 43.h6 Kxf4 44.h7 Rh8 45.Rg7 Ne5 46.Ra7 Ng4+ 47.Kg1 Rd8 48.Kf1 Nf6 49.Kf2 Kf5 50.Kf3 Kg6 51.Rxa4 Kxh7 52.Ra7+ Kg6 53.a4 Rd3+ 54.Ke2
 35/39+	00:12	 97.445k	7.642k	-0,29	25. ... gxf6 26.exf6
 35/39+	00:13	 99.838k	7.634k	-0,20	25. ... gxf6 26.exf6
 35/53+	00:16	 121.062k	7.566k	+0,40	25. ... gxf6 26.exf6
 35/58-	00:21	 160.308k	7.453k	+0,19	25. ... gxf6
 35/60+	00:25	 190.086k	7.421k	+0,76	25. ... gxf6 26.exf6
 35/60	00:28	 212.511k	7.425k	+0,71	25. ... gxf6 26.exf6 Bd6 27.Rd5 Nd7 28.Rxe6+ Kf7 29.Rdxd6 cxd6 30.Re7+ Kg6 31.Rg7+ Kf5 32.Rxd7 b6 33.Kf2 Rad8 34.Rh7 Rh8 35.Rb7 Rb8 36.Ra7 Ra8 37.Re7 Rae8 38.Rg7 Re4 39.Rg5+ Ke6 40.f5+ Kf7 41.Rg7+ Kf8 42.Rd7 Rxc4 43.Rxd6 Rc2+ 44.Kf3 Rxb2 45.Rd8+ Kf7 46.Rxh8 c4 47.Rxh5 c3 48.Rh7+ Kxf6 49.Ke4 c2 50.Rh6+ Kg7
 36/67-	00:32	 241.687k	7.394k	+0,62	25. ... gxf6
 36/67-	00:33	 245.753k	7.399k	+0,53	25. ... gxf6
 36/67+	00:35	 259.847k	7.397k	+0,81	25. ... gxf6 26.exf6
 36/67-	00:36	 270.191k	7.382k	+0,60	25. ... gxf6
 36/67-	00:37	 275.959k	7.373k	+0,33	25. ... gxf6
 36/68	00:43	 320.953k	7.374k	+0,25	25. ... gxf6 26.exf6 Bd6 27.Rd5 Nd7 28.Rxe6+ Kf7 29.Rdxd6 cxd6 30.Re7+ Kg6 31.Rg7+ Kf5 32.Rxd7 b6 33.Kf2 Rfd8 34.Rc7 Rac8 35.Re7 Re8 36.Rg7 Kxf4 37.Rg5 Rh8 38.Rd5 Ke4 39.Bc1 Rce8 40.Rxd6 Rb8 41.g3 Rhf8 42.Bg5 Kf5 43.Bf4 Kg6 44.f7+ Kxf7 45.Rh6 Rh8 46.Rxh5 Rxh5 47.Bxb8 Rh6 48.Bf4 Rh7 49.Kf3 Ke6 50.Kg4 Rh8 51.h5
 37/52	00:50	 374.237k	7.389k	+0,16	25. ... gxf6 26.exf6 Bd6 27.Rd5 Nd7 28.Rxe6+ Kf7 29.Rdxd6 cxd6 30.Re7+ Kg6 31.Rg7+ Kf5 32.Rxd7 b6 33.Kf2 Rfd8 34.Rh7 Rh8 35.Rb7 Rab8 36.Rd7 Rhd8 37.Rg7 Kxf4 38.Rg5 Rh8 39.Rd5 Ke4 40.Bc1 Rbe8 41.Rxd6 Rb8 42.g3 Kf5 43.Bf4 Rb7 44.Rd5+ Ke6 45.Kf3 Rd7 46.Ke4 Rxd5 47.cxd5+ Kf7 48.Bc7 Re8+ 49.Kf5 Re3 50.d6 Rd3 51.Ke5
 38/58+	00:55	 412.094k	7.375k	+0,26	25. ... gxf6 26.exf6
 38/60+	00:57	 423.788k	7.370k	+0,35	25. ... gxf6 26.exf6
 38/60+	01:02	 460.024k	7.366k	+0,96	25. ... gxf6 26.exf6
 38/63-	01:03	 470.897k	7.365k	+0,74	25. ... gxf6
 38/63	01:04	 477.924k	7.366k	+0,97	25. ... gxf6 26.exf6 Bd6 27.Rd5 Nd7 28.Rxe6+ Kf7 29.Rdxd6 cxd6 30.Re7+ Kg6 31.Rg7+ Kf5 32.Rxd7 b6 33.Kf2 Rad8 34.Rh7 Rh8 35.Rc7 Rc8 36.Re7 Rhe8 37.Rg7 Ke4 38.Rd7 Red8 39.Rh7 d5 40.cxd5 Rxd5 41.Re7+ Kxf4 42.f7 Rdd8 43.Bg7 Kf5 44.Ke3 Kg6 45.f8N+ Rxf8 46.Bxf8 Rxf8 47.Ke4 Kf6 48.Re5 Kg6 49.Re6+ Rf6 50.Rc6 Kg7 51.Ke5 Rg6 52.Kf5 Rxg2 53.Rxb6 Ra2 54.Ke5
 39/32-	01:05	 484.053k	7.365k	+0,87	25. ... gxf6
 39/62-	01:06	 490.160k	7.365k	+0,78	25. ... gxf6
 39/62-	01:07	 499.695k	7.367k	+0,44	25. ... gxf6
 39/62	01:08	 502.037k	7.367k	+0,77	25. ... gxf6 26.exf6 Bd6 27.Rd5 Nd7 28.Rxe6+ Kf7 29.Rdxd6 cxd6 30.Re7+ Kg6 31.Rg7+ Kf5 32.Rxd7 b6 33.Kf2 Rad8 34.Rh7 Rh8 35.Rb7 Rb8 36.Rc7 Rbc8 37.Re7 Rhe8 38.Rg7 Ke4 39.Rd7 Red8 40.Ra7 Kd3 41.f7 Kxc4 42.Bf6 Rf8 43.Bg7 Kxb5 44.Bxf8 Rxf8 45.Ke3 d5 46.f5 Kc6 47.Kf4 Kd6 48.Kg5 c4 49.Kxh5 c3
 40/55-	01:09	 509.207k	7.363k	+0,68	25. ... gxf6
 40/61-	01:11	 522.935k	7.364k	+0,58	25. ... gxf6
 40/61	01:11	 526.583k	7.365k	+0,61	25. ... gxf6 26.exf6 Bd6 27.Rd5 Nd7 28.Rxe6+ Kf7 29.Rdxd6 cxd6 30.Re7+ Kg6 31.Rg7+ Kf5 32.Rxd7 b6 33.Kf2 Rad8 34.Rh7 Rh8 35.Rb7 Rb8 36.Rc7 Rbc8 37.Re7 Rhe8 38.Rg7 Ke4 39.Rd7 Red8 40.Ra7 Kd3 41.f7 Kxc4 42.Bf6 Rf8 43.Bg7 Kxb5 44.Bxf8 Rxf8 45.Ke3 d5 46.f5 Kc6 47.Kf4 Kd6 48.Rb7 Kc6 49.Re7 c4 50.Ke5 c3 51.Re6+ Kd7 52.Rd6+ Kc7
 41/62+	01:21	 601.704k	7.364k	+0,70	25. ... gxf6 26.exf6
 41/65+	01:29	 661.220k	7.356k	+0,80	25. ... gxf6 26.exf6
 41/72+	01:36	 710.160k	7.362k	+0,94	25. ... gxf6 26.exf6
 41/72-	01:38	 724.999k	7.362k	+0,82	25. ... gxf6
 41/72+	01:45	 772.918k	7.361k	+1,14	25. ... gxf6 26.exf6
 41/75-	01:50	 815.591k	7.373k	+0,84	25. ... gxf6
 41/75	01:52	 830.291k	7.377k	+0,68	25. ... gxf6 26.exf6 Bd6 27.Rd5 Nd7 28.Rxe6+ Kf7 29.Rdxd6 cxd6 30.Re7+ Kg6 31.Rg7+ Kf5 32.Rxd7 b6 33.Kf2 Rad8 34.Rh7 Rh8 35.Rc7 Rc8 36.Re7 Rhe8 37.Rg7 Kxf4 38.g4 hxg4 39.h5 d5 40.cxd5 Rcd8 41.Re7 Rf8 42.f7 Rxd5 43.Bc1+ Kf5 44.Bh6 Rdd8 45.Rb7 c4 46.Kg3 c3 47.Bxf8 Rxf8 48.h6 Kg5 49.h7 Kg6 50.Rxb6+ Kxh7 51.Rc6 Kg7 52.Rxc3 Kxf7 53.b6 Ke6 54.b7 Rb8
 42/70-	02:05	 930.574k	7.390k	+0,58	25. ... gxf6
 42/70+	02:08	 950.617k	7.389k	+0,77	25. ... gxf6 26.exf6
 42/70-	02:14	 992.172k	7.391k	+0,63	25. ... gxf6
 42/74	02:25	 1.074.461k	7.372k	+0,76	25. ... gxf6 26.exf6 Bd6 27.Rd5 Nd7 28.Rxe6+ Kf7 29.Rdxd6 cxd6 30.Re7+ Kg6 31.Rg7+ Kf5 32.Rxd7 b6 33.Kf2 Rad8 34.Rh7 Rh8 35.Rc7 Rc8 36.Rb7 Rb8 37.Re7 Rhe8 38.Rg7 Kxf4 39.g4 hxg4 40.h5 d5 41.cxd5 Rbd8 42.Re7 Rf8 43.f7 Rxd5 44.Bc1+ Kf5 45.Bh6 Rdd8 46.Rb7 c4 47.Kg3 c3 48.Bxf8 Rxf8 49.Kh4 g3 50.Kxg3 Kg5 51.Rc7 Kxh5 52.Kf3 c2 53.Ke4 Kg4 54.Rxc2 Rxf7 55.Kd5 Rf6 56.Rc4+ Kf3 57.Rxa4 Ke3 58.Rb4 Kd3
 43/74+	02:37	 1.150.482k	7.325k	+0,85	25. ... gxf6 26.exf6
 43/74+	02:47	 1.226.583k	7.311k	+0,94	25. ... gxf6 26.exf6
 43/74-	02:58	 1.297.554k	7.285k	+0,85	25. ... gxf6
 43/74	03:00	 1.316.940k	7.278k	+0,86	25. ... gxf6 26.exf6 Bd6 27.Rd5 Nd7 28.Rxe6+ Kf7 29.Rdxd6 cxd6 30.Re7+ Kg6 31.Rg7+ Kf5 32.Rxd7 b6 33.Kf2 Rad8 34.Rh7 Rh8 35.Rc7 Rc8 36.Rb7 Rb8 37.Re7 Rhe8 38.Rg7 Kxf4 39.g4 hxg4 40.h5 d5 41.cxd5 Rbd8 42.Re7 Rf8 43.f7 Rxd5 44.Bc1+ Kf5 45.Bh6 Rdd8 46.Rb7 c4 47.Kg3 c3 48.Bxf8 Rxf8 49.Kh4 g3 50.Kxg3 Kg5 51.Rc7 Kxh5 52.Kf3 c2 53.Ke4 Rxf7 54.Rxc2 Kg5 55.Kd5 Rf3 56.Kc6 Rxa3 57.Kxb6 Rb3 58.Kc6
 44/72+	03:18	 1.435.994k	7.252k	+0,95	25. ... gxf6 26.exf6
 44/72+	03:44	 1.627.504k	7.263k	+1,05	25. ... gxf6 26.exf6
 44/72-	03:45	 1.639.704k	7.262k	+0,95	25. ... gxf6
 44/72	03:46	 1.646.546k	7.262k	+0,85	25. ... gxf6 26.exf6 Bd6 27.Rd5 Nd7 28.Rxe6+ Kf7 29.Rdxd6 cxd6 30.Re7+ Kg6 31.Rg7+ Kf5 32.Rxd7 b6 33.Kf2 Rad8 34.Rh7 Rh8 35.Rc7 Rc8 36.Rb7 Rb8 37.Re7 Rhe8 38.Rg7 Kxf4 39.g4 hxg4 40.h5 d5 41.cxd5 Rbd8 42.Re7 Rf8 43.f7 Rxd5 44.Bc1+ Kf5 45.Bh6 Rxf7 46.Rxf7+ Ke4 47.Rb7 Rxh5 48.Rxb6 Rh2+ 49.Ke1 g3 50.Rg6 Kf5 51.Rc6 Rh1+ 52.Ke2 g2 53.Be3 g1Q 54.Bxg1 Rxg1 55.b6 Ke4 56.b7 Rb1
 45/69+	04:05	 1.775.385k	7.240k	+0,94	25. ... gxf6 26.exf6
 45/69	04:10	 1.814.892k	7.242k	+0,92	25. ... gxf6 26.exf6 Bd6 27.Rd5 Nd7 28.Rxe6+ Kf7 29.Rdxd6 cxd6 30.Re7+ Kg6 31.Rg7+ Kf5 32.Rxd7 b6 33.Kf2 Rad8 34.Rh7 Rh8 35.Rc7 Rc8 36.Rb7 Rb8 37.Re7 Rhe8 38.Rg7 Kxf4 39.g4 hxg4 40.h5 d5 41.cxd5 Rbd8 42.Re7 Rf8 43.f7 Rxd5 44.Bc1+ Kf5 45.Bh6 Rxf7 46.Rxf7+ Ke4 47.Rb7 Rxh5 48.Rxb6 Rh2+ 49.Ke1 g3 50.Rg6 Kf5 51.Rc6 Rh1+ 52.Ke2 g2 53.Be3 g1Q 54.Bxg1 Rxg1 55.Kd3 Ke5 56.Rxc5+ Kd6 57.Rh5
 46/77-	04:30	 1.963.054k	7.247k	+0,83	25. ... gxf6
 46/77-	04:38	 2.018.760k	7.252k	+0,74	25. ... gxf6
 46/77	04:42	 2.045.858k	7.255k	+0,79	25. ... gxf6 26.exf6 Bd6 27.Rd5 Nd7 28.Rxe6+ Kf7 29.Rdxd6 cxd6 30.Re7+ Kg6 31.Rg7+ Kf5 32.Rxd7 b6 33.Kf2 Rad8 34.Rh7 Rh8 35.Rb7 Rb8 36.Re7 Rhe8 37.Rg7 Kxf4 38.g4 hxg4 39.h5 d5 40.cxd5 Rbd8 41.Re7 Rf8 42.f7 Rxd5 43.Bc1+ Kf5 44.Bh6 Rdd8 45.Rb7 c4 46.Kg3 c3 47.Bxf8 Rxf8 48.Kh4 g3 49.Kxg3 Kg5 50.Rc7 Kxh5 51.Kf3 c2 52.Ke4 Rxf7 53.Rxc2 Kg5 54.Rc6 Rf4+ 55.Kd5 Rf5+ 56.Kc4 Rf4+ 57.Kc3 Rf3+ 58.Kb4 Rf4+ 59.Rc4 Rf3 60.Kxa4
 47/73+	05:03	 2.200.574k	7.244k	+0,89	25. ... gxf6 26.exf6


Dann Corbit
Posts: 9632
Joined: Wed Mar 08, 2006 7:57 pm
Location: Redmond, WA USA
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Re: Vachier-Lagrave - Naiditsch, GRENKE 2019 R3 : 25.Nf6+ !

Post by Dann Corbit » Wed Apr 24, 2019 6:42 pm

Upon analyzing the position after making the key move, it seems the actual advantage is very small. I guess that the real truth for this position lies more than 60 plies away.

Code: Select all

Searching: rn2kr2/1pp1b1p1/4pN2/1Pp1P2p/p1P2P1P/P7/1B4P1/3RR1K1 b - - 0 1
infinite: 0 time: 0 increment: 0 moves to go: 0

 1   +0.65   00:00    4770  gxf6 
 2   +0.14   00:00   27469  gxf6 exf6 
 3   +0.67   00:00   50960  gxf6 exf6 Rxf6 Bxf6 Bxf6 Rxe6+ Kf7 
 4   +0.69   00:00   74731  gxf6 exf6 Rxf6 Bxf6 Bxf6 
 5   +0.90   00:00  105473  gxf6 exf6 Rxf6 Bxf6 
 6   +0.59   00:00  131408  gxf6 exf6 Bxf6 Rxe6+ Be7 Rde1 Rf7 
 7   +0.65   00:00  157077  gxf6 exf6 Rxf6 Bxf6 Bxf6 Rd5 Nd7 Rxh5 Bd4+ Kh1 
 8   +0.69   00:00  180235  gxf6 exf6 Rxf6 Bxf6 Bxf6 Rd5 Ke7 Rxh5 Bd4+ Kf1 Nd7 
 9   +0.67   00:00  208641  gxf6 exf6 Rxf6 Bxf6 Bxf6 Rd5 Bd4+ Kf1 Ke7 Rxh5 Nd7 
10   +0.37   00:00  240613  gxf6 exf6 Rxf6 Bxf6 Bxf6 Rxe6+ Kf7 Rxf6+ Kxf6 Rd5 Ra7 Rxc5 Nd7 
11   +0.90   00:00  267990  gxf6 exf6 Rxf6 Bxf6 Bxf6 Rd5 Ke7 Rxh5 Nd7 Rh7+ Kd6 
12   +0.51   00:00  317545  gxf6 exf6 Rxf6 Bxf6 Bxf6 Rd5 Ke7 Rxh5 Nd7 g4 Bd4+ Kg2 Kd6 Rh6 Re8 
13   +0.69   00:00  361082  gxf6 exf6 Rxf6 Bxf6 Bxf6 Rd5 Bd4+ Kf1 Nd7 Rxh5 Kf7 f5 Ne5 fxe6+ Kxe6 
14   +0.68   00:00  525019  gxf6 exf6 Rxf6 Bxf6 Bxf6 Rxe6+ Kf7 Rxf6+ Kxf6 Rd5 c6 Rxc5 cxb5 cxb5 Ke6 Rxh5 Nd7 Rh6+ Kd5 g4 Rf8 Rh7 Nc5 f5 Kc4 Kg2 
15   +0.39   00:00   1817K  gxf6 exf6 Rxf6 Bxf6 Bxf6 Rxe6+ Kf7 Rxf6+ Kxf6 Rd5 c6 Rxc5 Nd7 Rxh5 Rc8 Rh7 Nc5 Rh6+ Kg7 Rd6 Rc7 bxc6 Rxc6 Rxc6 bxc6 Kf2 Kf6 
16   +0.46   00:00   1856K  gxf6 exf6 Rxf6 Bxf6 Bxf6 Rxe6+ Kf7 Rxf6+ Kxf6 Rd5 c6 Rxc5 Nd7 Rxh5 cxb5 cxb5 Ke6 Rh6+ Kf5 Rh7 Rd8 h5 Kxf4 
17   +0.45   00:00   2176K  gxf6 exf6 Rxf6 Bxf6 Bxf6 Rxe6+ Kf7 Rxf6+ Kxf6 Rd5 c6 Rxc5 Nd7 Rxh5 Rc8 Rh7 cxb5 cxb5 Ke6 h5 Rc5 Rh6+ Kf5 Rh7 
18   +0.43   00:00   2725K  gxf6 exf6 Rxf6 Bxf6 Bxf6 Rxe6+ Kf7 Rxf6+ Kxf6 Rd5 c6 Rxc5 cxb5 cxb5 Nd7 Rxh5 Rc8 Rh7 Ke6 h5 Rc5 Rh6+ Kf5 Rh7 Nf6 Rxb7 Nxh5 b6 Rb5 Rf7+ Kg6 Ra7 
19   +0.45   00:00   2808K  gxf6 exf6 Rxf6 Bxf6 Bxf6 Rxe6+ Kf7 Rxf6+ Kxf6 Rd5 c6 Rxc5 cxb5 cxb5 Nd7 Rxh5 Ke6 g4 Rf8 f5+ Ke5 Rh7 Rd8 h5 Kf4 Rg7 
20   +0.13   00:00   4369K  gxf6 exf6 Rxf6 Bxf6 Bxf6 Rxe6+ Kf7 Re4 Bd4+ Rdxd4 cxd4 Rxd4 Ke7 Re4+ Kd8 Re5 Nd7 Rxh5 Ke7 Kf2 Nf6 Re5+ Kf7 Kf3 Rd8 Rc5 Rd3+ Ke2 Rxa3 Rxc7+ Ke6 Rxb7 Rc3 Rc7 a3 Ra7 Rxc4 Rxa3 Rxf4 Rb3 Rxh4 Kf3 Kf5 b6 Nd7 b7 
21   +0.37   00:00   5455K  gxf6 exf6 Rxf6 Bxf6 Bxf6 Rxe6+ Kf7 Re4 Bd4+ Rdxd4 cxd4 Rxd4 Ke8 Re4+ Kd8 Re5 Nd7 Rxh5 Ke7 Kf2 Nb6 c5 Nc4 Rh7+ Ke6 Rxc7 Kd5 c6 bxc6 Rxc6 Nxa3 Ra6 Rxa6 bxa6 Nb5 
22   +0.57   00:00   5901K  gxf6 exf6 Rxf6 Bxf6 Bxf6 Rxe6+ Kf7 Re4 Bd4+ Rdxd4 cxd4 Rxd4 Ke8 Rd5 Nd7 Rxh5 Ke7 Rh7+ Kd6 Rh5 Rf8 g3 Ke6 Rh7 Rf7 Rxf7 Kxf7 Kf2 Nb6 c5 Nc4 
23   +0.66   00:00  10719K  gxf6 exf6 Rxf6 Bxf6 Bxf6 Rxe6+ Kf7 Re4 Bd4+ Rdxd4 cxd4 Rxd4 Ke7 Re4+ Kd8 Re5 Nd7 Rxh5 Ke7 Rh7+ Kd6 Rh5 Ke6 Kf2 Nb6 Rh6+ Kd7 c5 Nc4 Rh7+ Ke6 Rxc7 Kd5 b6 Rb8 g4 Nxa3 c6 bxc6 Ra7 Nc4 Rxa4 Nxb6 Ra7 Nc4 Ra6 Rb2+ Kg3 
24   +0.22   00:01  19992K  gxf6 exf6 Rxf6 Bxf6 Bxf6 Rxe6+ Kf7 Re4 Bd4+ Rdxd4 cxd4 Rxd4 Ke7 Re4+ Kd8 Re5 Nd7 Rxh5 Ke7 Kf2 Nb6 c5 Nc4 g4 Ke6 Kf3 Rf8 Rg5 Re8 Rg7 Re7 f5+ Kf6 Rxe7 Kxe7 c6 bxc6 bxc6 Nxa3 h5 
25   +0.34   00:01  21377K  gxf6 exf6 Rxf6 Bxf6 Bxf6 Rxe6+ Kf7 Re4 Bd4+ Rdxd4 cxd4 Rxd4 Ke7 Re4+ Kd8 Re5 Nd7 Rxh5 Ke7 Kf2 Nb6 c5 Nc4 g4 Ke6 Kf3 Rf8 Rg5 Re8 Rf5 Rd8 Ke4 Rd1 Rh5 Re1+ Kd3 Nxa3 Rh6+ Ke7 Rh7+ Kd8 Rh8+ Kd7 Rh7+ Re7 
26   +0.62   00:01  24326K  gxf6 exf6 Rxf6 Bxf6 Bxf6 Rxe6+ Kf7 Re4 Bd4+ Rdxd4 cxd4 Rxd4 Ke7 Re4+ Kd8 Re5 Nd7 Rxh5 Ke7 Kf2 Nb6 c5 Nc4 g4 Ke6 Kf3 Rf8 Rh7 Nxa3 Rxc7 Kd5 Rxb7 Kxc5 Ra7 Kb4 b6 Nb5 Ra6 Nd4+ Ke3 Kb5 Rxa4 Nc2+ Kd2 Kxa4 Kxc2 
27   +0.40   00:02  28601K  gxf6 exf6 Rxf6 Bxf6 Bxf6 Rxe6+ Kf7 Re4 Bd4+ Rexd4 cxd4 Rxd4 Ke7 Re4+ Kd8 Re5 Nd7 Rxh5 Ke7 Kf2 Nb6 c5 Nc4 g4 Rf8 Kf3 Ke6 Rh7 Nxa3 Rxc7 Kd5 Rxb7 Kxc5 Ra7 Kxb5 g5 Nc4 h5 Na5 Re7 Nc6 Re1 a3 g6 Nd4+ Kg4 
28   +0.58   00:02  35630K  gxf6 exf6 Rxf6 Bxf6 Bxf6 Rxe6+ Kf7 Re4 Bd4+ Rdxd4 cxd4 Rxd4 Ke7 Re4+ Kd8 Re5 Nd7 Rxh5 Ke7 Kf2 Nb6 c5 Nc4 g4 Ke6 Kf3 Rf8 Rh7 Nxa3 Rxc7 Nxb5 Rxb7 Nc3 
29   +0.58   00:03  44586K  gxf6 exf6 Rxf6 Bxf6 Bxf6 Rxe6+ Kf7 Re4 Bd4+ Rdxd4 cxd4 Rxd4 Ke7 Re4+ Kd8 Re5 Nd7 Rxh5 Ke7 Kf2 Nb6 c5 Nc4 g4 Ke6 Kf3 Rf8 Rh7 Nxa3 Rxc7 Nxb5 Rxb7 Nc3 c6 Kd6 c7 Rc8 h5 Rxc7 Rxc7 Kxc7 h6 a3 h7 a2 
30   -0.54   00:07  90815K  gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Kxf4 f7 Kf5 Bg7 Ke6 Bxf8 Rxf8 Ra7 Rxf7+ Rxf7 Kxf7 Kf3 Ke6 Ke4 d5+ cxd5+ Kd6 g3 c4 Kd4 c3 Kxc3 Kxd5 Kd3 Kc5 Ke3 Kxb5 Kf4 Kc4 g4 hxg4 h5 
31   -0.11   00:12 150276K  gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rad8 Rb7 d5 cxd5 Rxd5 Be5 Rd2+ Kf1 Rd3 f7 Ke6 Rxb6+ Kxf7 Rh6 Rxa3 b6 Re8 b7 Rb3 Rxh5 a3 b8=R Rexb8 Bxb8 Rxb8 Rh7+ Kg6 Ra7 Rb3 g4 
32   -0.13   00:14 165879K  gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rad8 Rb7 d5 cxd5 Rxd5 Be5 Rd2+ Kf1 Rd3 Rxb6 Rxa3 Rc6 Rb3 Rxc5 a3 Kf2 Kg6 f5+ Kxf5 Bd6+ Kxf6 Bxf8 a2 Rc6+ Kf7 Ra6 Rb2+ Ke3 Kxf8 Kd3 Rxb5 Rxa2 Kg7 Ra6 Rb2 Kc4 Rxg2 
33   -0.13   00:18 211846K  gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rad8 Rb7 d5 cxd5 Rxd5 Be5 Rd2+ Kf1 Rd3 Rxb6 Rxa3 Rc6 Rb3 Rxc5 a3 Kf2 Kg6 f5+ Kxf5 Bd6+ Kxf6 Bxf8 a2 Rc6+ Kf7 Ra6 Rb2+ Ke3 Kxf8 g3 Kf7 b6 Kg7 Kf3 Rxb6 Rxa2 Rc6 Ra5 Kh6 Rf5 Rc3+ Kf4 Rc4+ Ke5 Ra4 Rf6+ Kg7 
34   -0.00   00:25 294075K  gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rad8 Rb7 d5 cxd5 Rxd5 Be5 Rd2+ Kg1 Rg8 Rg7 Rxg7 fxg7 Rd8 Kf2 Rd2+ Kg3 Rd8 Kf3 Rd3+ Ke2 Rg3 Kf2 Rg6 g3 Rg4 Kg2 Rg6 
35   -0.00   00:30 361439K  gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rad8 Rb7 d5 cxd5 Rxd5 Be5 Rd2+ Kf1 Rd3 Rh7 Kg6 Rg7+ Kf5 
36   -0.00   00:33 391028K  gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rad8 Rb7 d5 cxd5 Rxd5 Be5 Rd2+ Kf1 Rd3 Rxb6 Rxa3 Ra6 c4 Rc6 c3 Rc5 Ke4 Bxc3 Kxf4 Rc7 Kf5 b6 Rb3 b7 Ke6 Rc6+ Kf7 Rc7+ 
37   -0.00   00:42 492047K  gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rad8 Rb7 d5 cxd5 Rxd5 Be5 Rd2+ Kf1 Rd3 Rxb6 Rxa3 Ra6 c4 Rc6 c3 Rc5 Ke4 Bxc3 Kxf4 Rc7 Kf5 b6 Rb3 b7 Ke6 Rc6+ Kf7 Rc7+ 
38   -0.00   00:51 594867K  gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Rxd6 Rad8 Rxb6 Rd2 Be5 Rg8 f7 Rgxg2+ Kf1 Rgf2+ Ke1 Rfe2+ Kf1 
39   -0.00   01:00 700759K  gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Rxd6 Rad8 Rxb6 Rd2 Be5 Rg8 f7 Rgxg2+ Kf1 Rgf2+ Kg1 
40   -0.00   01:24 979912K  gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rxd7 Rae8 Rg7+ Kf5 Kf2 Kxf4 Rg5 Rf7 g3+ Ke4 Rd5 Re6 b6 Rf8 Ba1 Rg8 Bc3 Rc8 Ke2 Rh8 Rg5 Rh7 Bb2 Re8 Rd5 Re6 Kf2 Rf7 Bc3 Rf8 
41   -0.00   01:37   1128M  gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rad8 Rg7 d5 cxd5 Rxd5 Ke3 Re8+ Be5 Rexe5+ fxe5 Rxe5+ Kd3 Kxf6 Rb7 Rd5+ Kc3 Rd6 Rh7 Kg6 Ra7 Kf5 Rxa4 Rg6 Ra7 Rxg2 Rh7 Rg3+ Kb2 Rg2+ Kb3 Rg3+ Kb2 
42   -0.81   02:41   1871M  gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rad8 Rh7 Rh8 Ra7 Ra8 Rc7 Rac8 Re7 Rhe8 Rg7 Kxf4 g4 hxg4 h5 d5 cxd5 Rcd8 f7 Rf8 Bc1+ Kf5 Bh6 Rxd5 Rh7 Rdd8 Bxf8 Rxf8 Rg7 Ke6 Rxg4 Rxf7+ Ke3 Kd5 h6 Rh7 Rg6 c4 Rxb6 Kc5 Rf6 Kxb5 
43   -0.29   03:01   2104M  gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rfd8 Rc7 Rac8 Re7 Re8 Rh7 Rh8 Ra7 Ra8 Rb7 Rab8 Re7 Rhe8 Rg7 Kxf4 g4 hxg4 h5 d5 cxd5 Rbd8 Re7 Rf8 f7 Rxd5 Bc1+ Kf5 Bh6 Rdd8 Rb7 c4 Kg3 Rd3+ Kg2 Rdd8 Bxf8 Rxf8 h6 c3 Kg3 Kg5 Rxb6 Rxf7 Rc6 c2 Kg2 Rh7 Rxc2 Rxh6 
44   -0.18   03:54   2736M  gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rad8 Rh7 Rh8 Rc7 Rc8 Rb7 Rb8 Ra7 Ra8 Re7 Rhe8 Rg7 Kxf4 g4 hxg4 h5 d5 cxd5 Rad8 Re7 Rf8 f7 Rxd5 Bc1+ Kf5 Bh6 Rdd8 Rb7 c4 Kg3 Rd3+ Kg2 Rdd8 Bxf8 Rxf8 h6 c3 Kg3 Kg5 h7 Kh6 Rxb6+ Kxh7 Rc6 Kg7 Rxc3 Kxf7 Rc4 Rb8 Rc5 Ke6 Rh5 Kd6 Rg5 Rh8 Kxg4 Rf8 
45   -0.11   05:13   3654M  gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rad8 Rh7 Rh8 Ra7 Ra8 Re7 Rhe8 Rg7 Kxf4 g4 hxg4 h5 d5 cxd5 Rad8 Bc1+ Kf5 Bg5 Rf8 h6 Rxd5 h7 Rh8 Kg3 Rd3+ Kg2 Ke6 f7 Rf3 Rg8 Rxh7 f8=R Rxf8 Rxf8 Rh3 Rf6+ Kd5 Rxb6 Rxa3 Ra6 c4 Ra7 Rb3 Rxa4 Rxb5 Ra8 
46   -0.13   06:53   4819M  gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rfd8 Rc7 Rac8 Re7 Re8 Rg7 Kxf4 g4 hxg4 h5 d5 cxd5 Rcd8 Bc1+ Kf5 f7 Rf8 Bh6 Rxd5 Rh7 Rdd8 Bxf8 Rxf8 Ke3 Kf6 Rh6+ Kg5 Rg6+ Kxh5 Rg7 g3 Ke4 Kh6 Rxg3 Rxf7 Rg8 Rd7 Ke5 Rg7 Rf8 Rg6 Rf4 Rg5+ Kd6 c4 
Nodes: 4819341707
Nodes/second: 11652912
Best move: gxf6
Searching: rn2kr2/1pp1b1p1/4p3/1Pp1P2p/p1P1NP1P/P7/1B4P1/3RR1K1 w - - 0 1
infinite: 0 time: 0 increment: 0 moves to go: 0

 1   +0.18   00:00    5032  g3 
 2   +0.18   00:00   32536  g3 Nd7 
 3   +0.26   00:00   57372  Nf6+ gxf6 exf6 
 4   +0.31   00:00   81103  Bc1 Nd7 Be3 Bxh4 
 5   +0.26   00:00  107934  Nf6+ gxf6 exf6 Bd6 Rd5 
 6   +0.34   00:00  141934  Nf6+ gxf6 exf6 Bd6 Rd5 Nd7 
 7   +0.24   00:00  168893  Bc1 Nd7 Be3 Bxh4 g3 Be7 Kg2 
 8   +0.23   00:00  197466  Bc1 Nd7 g3 Nb6 Be3 Nxc4 Bxc5 Nxa3 
 9   +0.32   00:00  230178  Nf6+ gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 
10   +0.21   00:00  256208  Nf6+ gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 Kxf4 f7 Kf5 Bg7 Ke6 Bxf8 Kxd7 Bh6 
11   +0.21   00:00  303508  Bc1 Bxh4 Re2 Nd7 Be3 Be7 Red2 Nb6 Bxc5 Rxf4 
12   +0.30   00:00  366478  Nf6+ gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rfd8 Rg7 Kxf4 Rg5 Rh8 Rd5 Ke4 Bc1 Rae8 Rxd6 Rb8 g3 Kf5 Bf4 Rb7 Rd5+ Ke6 g4 hxg4 Kg3 
13   +0.21   00:00  432190  Nf6+ gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rfd8 Rg7 Kxf4 Rg5 Rh8 Rd5 Ke4 Bc1 Rae8 Rxd6 Rb8 g3 Kf5 Bf4 Rb7 Kf3 Rhh7 Bg5 Rhd7 
14   +0.30   00:00  462615  Nf6+ gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 Kxf4 f7 Kf5 Bg7 Ke6 Bxf8 Kxd7 
15   +0.34   00:00   1136K  Nf6+ gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rfd8 Rg7 Kxf4 Rg5 Rh8 Rd5 Ke4 f7 Rhf8 
16   +0.15   00:00   1639K  Nf6+ gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rfd8 Rg7 Kxf4 Rg5 Rh8 Rd5 Ke4 Bc1 Rae8 Rxd6 Rb8 g3 Kf5 Bf4 Rb7 Kf3 Rhh7 f7 Rbxf7 Rxb6 Rd7 
17   +0.15   00:00   1687K  Nf6+ gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rfd8 Rg7 Kxf4 Rg5 Rh8 Rd5 Ke4 Bc1 Rae8 Rxd6 Rb8 g3 Kf5 Bf4 Rb7 Kf3 Rhh7 f7 Rbxf7 Rxb6 Rd7 
18   +0.15   00:00   1931K  Nf6+ gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rfd8 Rg7 Kxf4 Rg5 Rh8 Rd5 Ke4 Bc1 Rae8 Rxd6 Rb8 g3 Kf5 Bf4 Rb7 Kf3 Rhh7 f7 Rbxf7 Rxb6 Rd7 Rc6 Rd3+ Kg2 
19   +0.15   00:00   2992K  Nf6+ gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rfd8 Rg7 Kxf4 Rg5 Rh8 Rd5 Ke4 Bc1 Rae8 Rxd6 Rb8 g3 Kf5 Bf4 Rb7 Kf3 Rhh7 f7 Rbxf7 Rxb6 Rd7 Rc6 Rd3+ Kg2 
20   +0.40   00:00   3056K  Nf6+ gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rfd8 Rg7 Ke4 g4 hxg4 Kg3 Kd3 f7 Kxc4 Bf6 Rd7 
21   +0.34   00:00   3122K  Nf6+ gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rfd8 Rg7 Kxf4 Rg5 Rh8 Rd5 Ke4 Bc1 Rae8 Rxd6 Kf5 Bb2 Rh7 Rd5+ Kg6 Rg5+ Kf7 Be5 Rg8 Ke3 Rxg5 hxg5 Kg6 Ke4 Rd7 
22   +0.25   00:00   3834K  Nf6+ gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rfd8 Rg7 Kxf4 Rg5 Rh8 Rd5 Ke4 Bc1 Rae8 Rxd6 Kf5 Rxb6 Re4 Rc6 Rxc4 Be3 Rc2+ Kg1 Rg8 b6 Rcxg2+ Kf1 R2g3 
23   +0.18   00:00   5690K  Nf6+ gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rfd8 Rh7 Rh8 Rc7 Rac8 Rd7 Rhd8 Rb7 Rb8 Rg7 Kxf4 Rg5 Rh8 Rd5 Kg4 Bc1 Rhg8 g3 Rbe8 Bh6 Re6 Bg7 Rge8 Rg5+ Kh3 f7 Re2+ Kf3 R8e3+ Kf4 
24   +0.18   00:00   6950K  Nf6+ gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rfd8 Rh7 Rh8 Rc7 Rac8 Rd7 Rhd8 Rb7 Rb8 Rg7 Kxf4 Rg5 Rh8 Rd5 Kg4 Rxd6 Rhf8 Rd7 Rbd8 Rg7+ Kf4 g3+ Kf5 Rg5+ Ke6 Ke3 Rg8 Kf4 Rxg5 hxg5 Rd2 Be5 Re2 
25   +0.21   00:00   8080K  Nf6+ gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rfd8 Rh7 Rh8 Rc7 Rac8 Rd7 Rhd8 Rb7 Rb8 Rg7 Kxf4 Rg5 Rh8 Rd5 Kg4 Rxd6 Rb7 g3 Re8 Rd5 Rg8 Bc1 Rf7 Rd6 Re8 Bf4 Re4 Rxb6 Rxc4 Rc6 Rc3 
26   +0.11   00:01  13139K  Nf6+ gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rfd8 Rh7 Rh8 Rc7 Rac8 Rd7 Rhd8 Rb7 Rb8 Rg7 Kxf4 Rg5 Rh8 Rd5 Ke4 g3 Rbc8 Kg2 Rcd8 Bc1 Rhe8 Rxh5 d5 
27   +0.08   00:02  31950K  Nf6+ gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rfd8 Rg7 Kxf4 Rg5 Rh8 Rd5 Ke4 g3 Rad8 Bc1 Rde8 Bg5 Rh7 Rxd6 Rb7 Bh6 Re5 Bf4 Re8 Kg2 Rf8 Kh3 Rff7 Bg5 Kf3 Re6 Rbd7 Rxb6 Rd1 
28   +0.08   00:02  34248K  Nf6+ gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rfd8 Rg7 Kxf4 Rg5 Rh8 Rd5 Ke4 g3 Rad8 Bc1 Rde8 Rxd6 Kf5 Rxb6 Re4 Bf4 Rxc4 Rd6 Rc2+ Ke3 Rc3+ Rd3 Rc2 b6 Re8+ Kf3 Kxf6 b7 Rb2 Rd6+ Kf7 Rd7+ Kf6 Rh7 Rb3+ Kg2 Kg6 Rh6+ Kg7 Rxh5 Rxb7 
29   +0.08   00:05  63052K  Nf6+ gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rfd8 Rg7 Kxf4 Rg5 Rh8 Rd5 Ke4 g3 Rad8 Bc1 Rde8 Rxd6 Kf5 Rxb6 Re4 Bf4 Rxc4 Rd6 Rc2+ Ke3 Rc3+ Rd3 Rc2 b6 Re8+ Kf3 Kxf6 b7 Rb2 Rd6+ Kf7 Rd7+ Kf6 Rh7 Rb3+ Kg2 Kg6 Rh6+ Kg7 Rxh5 Rxb7 
30   +0.08   00:05  66799K  Nf6+ gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rfd8 Re7 Re8 Rh7 Rh8 Rc7 Rac8 Rd7 Rhd8 Rb7 Rb8 Rg7 Kxf4 Rg5 Rh8 Rd5 Ke4 g3 Rbd8 Bc1 Rde8 Rxd6 Kf5 Rxb6 Re4 Rd6 Rxc4 Bf4 Rc2+ Ke3 Rc3+ Rd3 Rc2 b6 Re8+ Kf3 Kxf6 b7 Rb2 
31   +0.08   00:07  92051K  Nf6+ gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rfd8 Re7 Re8 Rh7 Rh8 Rc7 Rac8 Rd7 Rhd8 Rb7 Rb8 Rg7 Kxf4 Rg5 Rh8 Rd5 Ke4 g3 Rbd8 Bc1 Rde8 Rxd6 Kf5 Rxb6 Re4 Rd6 Rxc4 Bf4 Rc2+ Ke3 Rc3+ Rd3 Rc2 b6 Re8+ Kf3 Kxf6 b7 Rb2 Rd6+ Kf7 
32   +0.08   00:10 121101K  Nf6+ gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rfd8 Re7 Re8 Rh7 Rh8 Rc7 Rac8 Rd7 Rhd8 Rb7 Rb8 Rh7 Rh8 Re7 Rhe8 Rg7 Kxf4 g4 hxg4 h5 d5 cxd5 Rbd8 h6 Rxd5 Bc1+ Kf5 f7 Rf8 h7 Ke6 Kg3 Rh5 Kxg4 Rh2 Kg3 Rh1 Kg2 Rh5 Bb2 Rxf7 Rxf7 Kxf7 h8=Q Rxh8 Bxh8 Ke6 Bg7 Kd5 Kf2 Kc4 Bh6 Kxb5 
33   +0.26   00:11 132307K  Nf6+ gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rfd8 Rb7 Rab8 Rh7 Rh8 Re7 Rhe8 Rg7 Kxf4 g4 hxg4 h5 d5 cxd5 Rbd8 h6 Rxd5 Bc1+ Kf5 f7 Rf8 h7 Ke6 Kg3 Rh5 Kxg4 Rh2 Kg3 
34   +0.13   00:18 215352K  Nf6+ gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rad8 Rh7 Rh8 Rc7 Rc8 Rd7 Rhd8 Ra7 Ra8 Rb7 Rab8 Rh7 Rh8 Re7 Rhe8 Rg7 Kxf4 g4 hxg4 h5 d5 cxd5 Rbd8 h6 Rxd5 Bc1+ Kf5 f7 Rf8 h7 Ke6 Kg3 Rh5 Kxg4 Rh2 Kg3 Rh1 Bb2 Rxf7 Rxf7 Kxf7 h8=Q Rxh8 Bxh8 Ke6 Kg2 
35   +0.35   00:18 217667K  Nf6+ gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rad8 Rh7 Rh8 Rc7 Rc8 Rd7 Rhd8 Rb7 Rb8 Rh7 Rh8 Re7 Rhe8 Rg7 Kxf4 g4 hxg4 h5 d5 cxd5 Rbd8 h6 Rxd5 Bc1+ Kf5 f7 Rf8 h7 Ke6 Kg3 Rh5 Kxg4 Rh2 Kg3 Rh1 Bb2 Ke7 Kf4 Rh2 Be5 
36   +0.08   00:29 339417K  Nf6+ gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rfd8 Rb7 Rab8 Re7 Re8 Rg7 Kxf4 g4 hxg4 h5 d5 cxd5 Rbd8 Re7 Rf8 f7 Rxd5 Bc1+ Kf5 Bh6 Rdd8 Rb7 c4 Kg3 Rd3+ Kg2 Rdd8 Bxf8 Rxf8 h6 c3 Kg3 Kg5 h7 Kh6 Rxb6+ Kxh7 Rc6 Kg7 Rxc3 Kxf7 Rc4 Rb8 Rc5 Ke6 Kxg4 Kd6 Rh5 Rf8 
37   +0.12   00:37 441288K  Nf6+ gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rfd8 Re7 Re8 Rh7 Rh8 Rc7 Rac8 Rb7 Rb8 Re7 Rhe8 Rg7 Kxf4 g4 hxg4 h5 d5 cxd5 Rbd8 Bc1+ Kf5 f7 Rf8 Bh6 Rxd5 Rh7 Rdd8 Bxf8 Rxf8 Rg7 Ke6 Rxg4 Rxf7+ Kg3 Rh7 Rg6+ Kd5 h6 Kc4 Kh4 Kxb5 
38   +0.13   00:43 515938K  Nf6+ gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rfd8 Rb7 Rab8 Re7 Re8 Rg7 Kxf4 g4 hxg4 h5 d5 cxd5 Rbd8 Bc1+ Kf5 f7 Rf8 Bh6 Rxd5 Rh7 Rdd8 Bxf8 Rxf8 Rg7 Ke6 Rxg4 Rxf7+ Kg3 Rh7 Rg6+ Kf5 Kh4 Rd7 Rxb6 Rd4+ Kg3 Rd3+ Kg2 Rxa3 
39   +0.52   00:58 696709K  Nf6+ gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rfd8 Rc7 Rac8 Rh7 Rh8 Rb7 Rb8 Rd7 Rhd8 Re7 Re8 Rg7 Kxf4 g4 hxg4 h5 d5 cxd5 Rbd8 Bc1+ Kf5 f7 Rf8 Bh6 Rxd5 Rh7 g3+ Kf3 
40   +0.13   01:22 969258K  Nf6+ gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rad8 Rh7 Rh8 Ra7 Ra8 Re7 Rhe8 Rg7 Kxf4 g4 hxg4 h5 d5 cxd5 Rad8 Bc1+ Kf5 f7 Rf8 Bh6 Rxd5 Rh7 Rdd8 Bxf8 Rxf8 Rg7 Ke6 Rxg4 Rxf7+ Kg3 Rh7 Kh4 Kd5 Rg6 Kc4 Rxb6 Kb3 Kg5 Kxa3 
41   +0.00   02:08   1496M  Nf6+ gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rfd8 Rg7 Kxf4 Rg5 Rh8 Bc1+ Ke4 Rd5 Rae8 Rxd6 Kf5 Rxb6 Re4 Bg5 Rxc4 Rb7 Rc2+ Kg1 Rb2 Kh2 Rb3 b6 Rf8 Rc7 Ke6 Rxc5 Rxa3 b7 Rb3 Rc8 Kf7 Rc7+ Kg6 Rc8 
42   +0.00   02:33   1782M  Nf6+ gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rfd8 Rg7 Kxf4 Rg5 Rh8 Bc1+ Ke4 Rd5 Rae8 Rxd6 Kf5 Rxb6 Re4 Bg5 Rxc4 Ra6 Rc2+ Ke3 Rc3+ Kd2 Rxa3 f7 Rf8 Rf6+ Ke5 Rf4 Ke6 Rf6+ 
43   +0.00   03:11   2209M  Nf6+ gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rfd8 Rg7 Kxf4 Rg5 Rh8 Bc1+ Ke4 Rd5 Rae8 Rxd6 Kf5 Rxb6 Re4 Bg5 Rxc4 Rc6 Rc2+ Kg1 Rh7 b6 Rf7 Rc7 Ke6 g4 Rb2 gxh5 Rxb6 Rxc5 Rb3 Rc4 Rxa3 Re4+ Kf5 Rf4+ Ke6 
44   +0.00   03:45   2581M  Nf6+ gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rfd8 Rg7 Kxf4 Rg5 Rh8 Bc1+ Ke4 Rd5 Rae8 Rxd6 Kf5 Rxb6 Re4 Bg5 Rxc4 f7 Rf8 Rf6+ Ke5 b6 Rc3 Ke2 Rxa3 Rf4 Ra2+ Kf3 Ra3+ Kf2 Ra2+ Kf3 
45   +0.00   04:24   3022M  Nf6+ gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rfd8 Rg7 Kxf4 Rg5 Rh8 Bc1+ Ke4 Rd5 Rae8 Rxd6 Kf5 Rxb6 Re4 Bg5 Rxc4 f7 Rf8 Rf6+ Ke5 b6 Rc3 Ke2 Rxa3 Rf4 Ra2+ Kd3 Ke6 Rf6+ Ke5 Rf4 
46   +0.00   05:31   3768M  Nf6+ gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rfd8 Rg7 Kxf4 Rg5 Rh8 Bc1+ Ke4 Rd5 Rae8 Rxd6 Kf5 Rxb6 Re4 Bg5 Rxc4 f7 Rf8 Rf6+ Ke5 b6 Rc3 Ke2 Rxa3 Rf4 Ra2+ Kd3 Ke6 Rf6+ Ke5 Rf1 Ke6 
Nodes: 3768291130
Nodes/second: 11363040
Best move: Nf6+
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User avatar
Eelco de Groot
Posts: 4073
Joined: Sun Mar 12, 2006 1:40 am
Location: Groningen

Re: Vachier-Lagrave - Naiditsch, GRENKE 2019 R3 : 25.Nf6+ !

Post by Eelco de Groot » Wed Apr 24, 2019 7:51 pm

Dann Corbit wrote:
Wed Apr 24, 2019 6:42 pm
Upon analyzing the position after making the key move, it seems the actual advantage is very small. I guess that the real truth for this position lies more than 60 plies away.

Code: Select all

Searching: rn2kr2/1pp1b1p1/4pN2/1Pp1P2p/p1P2P1P/P7/1B4P1/3RR1K1 b - - 0 1
infinite: 0 time: 0 increment: 0 moves to go: 0

 1   +0.65   00:00    4770  gxf6 
 2   +0.14   00:00   27469  gxf6 exf6 
 3   +0.67   00:00   50960  gxf6 exf6 Rxf6 Bxf6 Bxf6 Rxe6+ Kf7 
 4   +0.69   00:00   74731  gxf6 exf6 Rxf6 Bxf6 Bxf6 
 5   +0.90   00:00  105473  gxf6 exf6 Rxf6 Bxf6 
 6   +0.59   00:00  131408  gxf6 exf6 Bxf6 Rxe6+ Be7 Rde1 Rf7 
 7   +0.65   00:00  157077  gxf6 exf6 Rxf6 Bxf6 Bxf6 Rd5 Nd7 Rxh5 Bd4+ Kh1 
 8   +0.69   00:00  180235  gxf6 exf6 Rxf6 Bxf6 Bxf6 Rd5 Ke7 Rxh5 Bd4+ Kf1 Nd7 
 9   +0.67   00:00  208641  gxf6 exf6 Rxf6 Bxf6 Bxf6 Rd5 Bd4+ Kf1 Ke7 Rxh5 Nd7 
10   +0.37   00:00  240613  gxf6 exf6 Rxf6 Bxf6 Bxf6 Rxe6+ Kf7 Rxf6+ Kxf6 Rd5 Ra7 Rxc5 Nd7 
11   +0.90   00:00  267990  gxf6 exf6 Rxf6 Bxf6 Bxf6 Rd5 Ke7 Rxh5 Nd7 Rh7+ Kd6 
12   +0.51   00:00  317545  gxf6 exf6 Rxf6 Bxf6 Bxf6 Rd5 Ke7 Rxh5 Nd7 g4 Bd4+ Kg2 Kd6 Rh6 Re8 
13   +0.69   00:00  361082  gxf6 exf6 Rxf6 Bxf6 Bxf6 Rd5 Bd4+ Kf1 Nd7 Rxh5 Kf7 f5 Ne5 fxe6+ Kxe6 
14   +0.68   00:00  525019  gxf6 exf6 Rxf6 Bxf6 Bxf6 Rxe6+ Kf7 Rxf6+ Kxf6 Rd5 c6 Rxc5 cxb5 cxb5 Ke6 Rxh5 Nd7 Rh6+ Kd5 g4 Rf8 Rh7 Nc5 f5 Kc4 Kg2 
15   +0.39   00:00   1817K  gxf6 exf6 Rxf6 Bxf6 Bxf6 Rxe6+ Kf7 Rxf6+ Kxf6 Rd5 c6 Rxc5 Nd7 Rxh5 Rc8 Rh7 Nc5 Rh6+ Kg7 Rd6 Rc7 bxc6 Rxc6 Rxc6 bxc6 Kf2 Kf6 
16   +0.46   00:00   1856K  gxf6 exf6 Rxf6 Bxf6 Bxf6 Rxe6+ Kf7 Rxf6+ Kxf6 Rd5 c6 Rxc5 Nd7 Rxh5 cxb5 cxb5 Ke6 Rh6+ Kf5 Rh7 Rd8 h5 Kxf4 
17   +0.45   00:00   2176K  gxf6 exf6 Rxf6 Bxf6 Bxf6 Rxe6+ Kf7 Rxf6+ Kxf6 Rd5 c6 Rxc5 Nd7 Rxh5 Rc8 Rh7 cxb5 cxb5 Ke6 h5 Rc5 Rh6+ Kf5 Rh7 
18   +0.43   00:00   2725K  gxf6 exf6 Rxf6 Bxf6 Bxf6 Rxe6+ Kf7 Rxf6+ Kxf6 Rd5 c6 Rxc5 cxb5 cxb5 Nd7 Rxh5 Rc8 Rh7 Ke6 h5 Rc5 Rh6+ Kf5 Rh7 Nf6 Rxb7 Nxh5 b6 Rb5 Rf7+ Kg6 Ra7 
19   +0.45   00:00   2808K  gxf6 exf6 Rxf6 Bxf6 Bxf6 Rxe6+ Kf7 Rxf6+ Kxf6 Rd5 c6 Rxc5 cxb5 cxb5 Nd7 Rxh5 Ke6 g4 Rf8 f5+ Ke5 Rh7 Rd8 h5 Kf4 Rg7 
20   +0.13   00:00   4369K  gxf6 exf6 Rxf6 Bxf6 Bxf6 Rxe6+ Kf7 Re4 Bd4+ Rdxd4 cxd4 Rxd4 Ke7 Re4+ Kd8 Re5 Nd7 Rxh5 Ke7 Kf2 Nf6 Re5+ Kf7 Kf3 Rd8 Rc5 Rd3+ Ke2 Rxa3 Rxc7+ Ke6 Rxb7 Rc3 Rc7 a3 Ra7 Rxc4 Rxa3 Rxf4 Rb3 Rxh4 Kf3 Kf5 b6 Nd7 b7 
21   +0.37   00:00   5455K  gxf6 exf6 Rxf6 Bxf6 Bxf6 Rxe6+ Kf7 Re4 Bd4+ Rdxd4 cxd4 Rxd4 Ke8 Re4+ Kd8 Re5 Nd7 Rxh5 Ke7 Kf2 Nb6 c5 Nc4 Rh7+ Ke6 Rxc7 Kd5 c6 bxc6 Rxc6 Nxa3 Ra6 Rxa6 bxa6 Nb5 
22   +0.57   00:00   5901K  gxf6 exf6 Rxf6 Bxf6 Bxf6 Rxe6+ Kf7 Re4 Bd4+ Rdxd4 cxd4 Rxd4 Ke8 Rd5 Nd7 Rxh5 Ke7 Rh7+ Kd6 Rh5 Rf8 g3 Ke6 Rh7 Rf7 Rxf7 Kxf7 Kf2 Nb6 c5 Nc4 
23   +0.66   00:00  10719K  gxf6 exf6 Rxf6 Bxf6 Bxf6 Rxe6+ Kf7 Re4 Bd4+ Rdxd4 cxd4 Rxd4 Ke7 Re4+ Kd8 Re5 Nd7 Rxh5 Ke7 Rh7+ Kd6 Rh5 Ke6 Kf2 Nb6 Rh6+ Kd7 c5 Nc4 Rh7+ Ke6 Rxc7 Kd5 b6 Rb8 g4 Nxa3 c6 bxc6 Ra7 Nc4 Rxa4 Nxb6 Ra7 Nc4 Ra6 Rb2+ Kg3 
24   +0.22   00:01  19992K  gxf6 exf6 Rxf6 Bxf6 Bxf6 Rxe6+ Kf7 Re4 Bd4+ Rdxd4 cxd4 Rxd4 Ke7 Re4+ Kd8 Re5 Nd7 Rxh5 Ke7 Kf2 Nb6 c5 Nc4 g4 Ke6 Kf3 Rf8 Rg5 Re8 Rg7 Re7 f5+ Kf6 Rxe7 Kxe7 c6 bxc6 bxc6 Nxa3 h5 
25   +0.34   00:01  21377K  gxf6 exf6 Rxf6 Bxf6 Bxf6 Rxe6+ Kf7 Re4 Bd4+ Rdxd4 cxd4 Rxd4 Ke7 Re4+ Kd8 Re5 Nd7 Rxh5 Ke7 Kf2 Nb6 c5 Nc4 g4 Ke6 Kf3 Rf8 Rg5 Re8 Rf5 Rd8 Ke4 Rd1 Rh5 Re1+ Kd3 Nxa3 Rh6+ Ke7 Rh7+ Kd8 Rh8+ Kd7 Rh7+ Re7 
26   +0.62   00:01  24326K  gxf6 exf6 Rxf6 Bxf6 Bxf6 Rxe6+ Kf7 Re4 Bd4+ Rdxd4 cxd4 Rxd4 Ke7 Re4+ Kd8 Re5 Nd7 Rxh5 Ke7 Kf2 Nb6 c5 Nc4 g4 Ke6 Kf3 Rf8 Rh7 Nxa3 Rxc7 Kd5 Rxb7 Kxc5 Ra7 Kb4 b6 Nb5 Ra6 Nd4+ Ke3 Kb5 Rxa4 Nc2+ Kd2 Kxa4 Kxc2 
27   +0.40   00:02  28601K  gxf6 exf6 Rxf6 Bxf6 Bxf6 Rxe6+ Kf7 Re4 Bd4+ Rexd4 cxd4 Rxd4 Ke7 Re4+ Kd8 Re5 Nd7 Rxh5 Ke7 Kf2 Nb6 c5 Nc4 g4 Rf8 Kf3 Ke6 Rh7 Nxa3 Rxc7 Kd5 Rxb7 Kxc5 Ra7 Kxb5 g5 Nc4 h5 Na5 Re7 Nc6 Re1 a3 g6 Nd4+ Kg4 
28   +0.58   00:02  35630K  gxf6 exf6 Rxf6 Bxf6 Bxf6 Rxe6+ Kf7 Re4 Bd4+ Rdxd4 cxd4 Rxd4 Ke7 Re4+ Kd8 Re5 Nd7 Rxh5 Ke7 Kf2 Nb6 c5 Nc4 g4 Ke6 Kf3 Rf8 Rh7 Nxa3 Rxc7 Nxb5 Rxb7 Nc3 
29   +0.58   00:03  44586K  gxf6 exf6 Rxf6 Bxf6 Bxf6 Rxe6+ Kf7 Re4 Bd4+ Rdxd4 cxd4 Rxd4 Ke7 Re4+ Kd8 Re5 Nd7 Rxh5 Ke7 Kf2 Nb6 c5 Nc4 g4 Ke6 Kf3 Rf8 Rh7 Nxa3 Rxc7 Nxb5 Rxb7 Nc3 c6 Kd6 c7 Rc8 h5 Rxc7 Rxc7 Kxc7 h6 a3 h7 a2 
30   -0.54   00:07  90815K  gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Kxf4 f7 Kf5 Bg7 Ke6 Bxf8 Rxf8 Ra7 Rxf7+ Rxf7 Kxf7 Kf3 Ke6 Ke4 d5+ cxd5+ Kd6 g3 c4 Kd4 c3 Kxc3 Kxd5 Kd3 Kc5 Ke3 Kxb5 Kf4 Kc4 g4 hxg4 h5 
31   -0.11   00:12 150276K  gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rad8 Rb7 d5 cxd5 Rxd5 Be5 Rd2+ Kf1 Rd3 f7 Ke6 Rxb6+ Kxf7 Rh6 Rxa3 b6 Re8 b7 Rb3 Rxh5 a3 b8=R Rexb8 Bxb8 Rxb8 Rh7+ Kg6 Ra7 Rb3 g4 
32   -0.13   00:14 165879K  gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rad8 Rb7 d5 cxd5 Rxd5 Be5 Rd2+ Kf1 Rd3 Rxb6 Rxa3 Rc6 Rb3 Rxc5 a3 Kf2 Kg6 f5+ Kxf5 Bd6+ Kxf6 Bxf8 a2 Rc6+ Kf7 Ra6 Rb2+ Ke3 Kxf8 Kd3 Rxb5 Rxa2 Kg7 Ra6 Rb2 Kc4 Rxg2 
33   -0.13   00:18 211846K  gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rad8 Rb7 d5 cxd5 Rxd5 Be5 Rd2+ Kf1 Rd3 Rxb6 Rxa3 Rc6 Rb3 Rxc5 a3 Kf2 Kg6 f5+ Kxf5 Bd6+ Kxf6 Bxf8 a2 Rc6+ Kf7 Ra6 Rb2+ Ke3 Kxf8 g3 Kf7 b6 Kg7 Kf3 Rxb6 Rxa2 Rc6 Ra5 Kh6 Rf5 Rc3+ Kf4 Rc4+ Ke5 Ra4 Rf6+ Kg7 
34   -0.00   00:25 294075K  gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rad8 Rb7 d5 cxd5 Rxd5 Be5 Rd2+ Kg1 Rg8 Rg7 Rxg7 fxg7 Rd8 Kf2 Rd2+ Kg3 Rd8 Kf3 Rd3+ Ke2 Rg3 Kf2 Rg6 g3 Rg4 Kg2 Rg6 
35   -0.00   00:30 361439K  gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rad8 Rb7 d5 cxd5 Rxd5 Be5 Rd2+ Kf1 Rd3 Rh7 Kg6 Rg7+ Kf5 
36   -0.00   00:33 391028K  gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rad8 Rb7 d5 cxd5 Rxd5 Be5 Rd2+ Kf1 Rd3 Rxb6 Rxa3 Ra6 c4 Rc6 c3 Rc5 Ke4 Bxc3 Kxf4 Rc7 Kf5 b6 Rb3 b7 Ke6 Rc6+ Kf7 Rc7+ 
37   -0.00   00:42 492047K  gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rad8 Rb7 d5 cxd5 Rxd5 Be5 Rd2+ Kf1 Rd3 Rxb6 Rxa3 Ra6 c4 Rc6 c3 Rc5 Ke4 Bxc3 Kxf4 Rc7 Kf5 b6 Rb3 b7 Ke6 Rc6+ Kf7 Rc7+ 
38   -0.00   00:51 594867K  gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Rxd6 Rad8 Rxb6 Rd2 Be5 Rg8 f7 Rgxg2+ Kf1 Rgf2+ Ke1 Rfe2+ Kf1 
39   -0.00   01:00 700759K  gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Rxd6 Rad8 Rxb6 Rd2 Be5 Rg8 f7 Rgxg2+ Kf1 Rgf2+ Kg1 
40   -0.00   01:24 979912K  gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rxd7 Rae8 Rg7+ Kf5 Kf2 Kxf4 Rg5 Rf7 g3+ Ke4 Rd5 Re6 b6 Rf8 Ba1 Rg8 Bc3 Rc8 Ke2 Rh8 Rg5 Rh7 Bb2 Re8 Rd5 Re6 Kf2 Rf7 Bc3 Rf8 
41   -0.00   01:37   1128M  gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rad8 Rg7 d5 cxd5 Rxd5 Ke3 Re8+ Be5 Rexe5+ fxe5 Rxe5+ Kd3 Kxf6 Rb7 Rd5+ Kc3 Rd6 Rh7 Kg6 Ra7 Kf5 Rxa4 Rg6 Ra7 Rxg2 Rh7 Rg3+ Kb2 Rg2+ Kb3 Rg3+ Kb2 
42   -0.81   02:41   1871M  gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rad8 Rh7 Rh8 Ra7 Ra8 Rc7 Rac8 Re7 Rhe8 Rg7 Kxf4 g4 hxg4 h5 d5 cxd5 Rcd8 f7 Rf8 Bc1+ Kf5 Bh6 Rxd5 Rh7 Rdd8 Bxf8 Rxf8 Rg7 Ke6 Rxg4 Rxf7+ Ke3 Kd5 h6 Rh7 Rg6 c4 Rxb6 Kc5 Rf6 Kxb5 
43   -0.29   03:01   2104M  gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rfd8 Rc7 Rac8 Re7 Re8 Rh7 Rh8 Ra7 Ra8 Rb7 Rab8 Re7 Rhe8 Rg7 Kxf4 g4 hxg4 h5 d5 cxd5 Rbd8 Re7 Rf8 f7 Rxd5 Bc1+ Kf5 Bh6 Rdd8 Rb7 c4 Kg3 Rd3+ Kg2 Rdd8 Bxf8 Rxf8 h6 c3 Kg3 Kg5 Rxb6 Rxf7 Rc6 c2 Kg2 Rh7 Rxc2 Rxh6 
44   -0.18   03:54   2736M  gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rad8 Rh7 Rh8 Rc7 Rc8 Rb7 Rb8 Ra7 Ra8 Re7 Rhe8 Rg7 Kxf4 g4 hxg4 h5 d5 cxd5 Rad8 Re7 Rf8 f7 Rxd5 Bc1+ Kf5 Bh6 Rdd8 Rb7 c4 Kg3 Rd3+ Kg2 Rdd8 Bxf8 Rxf8 h6 c3 Kg3 Kg5 h7 Kh6 Rxb6+ Kxh7 Rc6 Kg7 Rxc3 Kxf7 Rc4 Rb8 Rc5 Ke6 Rh5 Kd6 Rg5 Rh8 Kxg4 Rf8 
45   -0.11   05:13   3654M  gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rad8 Rh7 Rh8 Ra7 Ra8 Re7 Rhe8 Rg7 Kxf4 g4 hxg4 h5 d5 cxd5 Rad8 Bc1+ Kf5 Bg5 Rf8 h6 Rxd5 h7 Rh8 Kg3 Rd3+ Kg2 Ke6 f7 Rf3 Rg8 Rxh7 f8=R Rxf8 Rxf8 Rh3 Rf6+ Kd5 Rxb6 Rxa3 Ra6 c4 Ra7 Rb3 Rxa4 Rxb5 Ra8 
46   -0.13   06:53   4819M  gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rfd8 Rc7 Rac8 Re7 Re8 Rg7 Kxf4 g4 hxg4 h5 d5 cxd5 Rcd8 Bc1+ Kf5 f7 Rf8 Bh6 Rxd5 Rh7 Rdd8 Bxf8 Rxf8 Ke3 Kf6 Rh6+ Kg5 Rg6+ Kxh5 Rg7 g3 Ke4 Kh6 Rxg3 Rxf7 Rg8 Rd7 Ke5 Rg7 Rf8 Rg6 Rf4 Rg5+ Kd6 c4 
Nodes: 4819341707
Nodes/second: 11652912
Best move: gxf6
Searching: rn2kr2/1pp1b1p1/4p3/1Pp1P2p/p1P1NP1P/P7/1B4P1/3RR1K1 w - - 0 1
infinite: 0 time: 0 increment: 0 moves to go: 0

 1   +0.18   00:00    5032  g3 
 2   +0.18   00:00   32536  g3 Nd7 
 3   +0.26   00:00   57372  Nf6+ gxf6 exf6 
 4   +0.31   00:00   81103  Bc1 Nd7 Be3 Bxh4 
 5   +0.26   00:00  107934  Nf6+ gxf6 exf6 Bd6 Rd5 
 6   +0.34   00:00  141934  Nf6+ gxf6 exf6 Bd6 Rd5 Nd7 
 7   +0.24   00:00  168893  Bc1 Nd7 Be3 Bxh4 g3 Be7 Kg2 
 8   +0.23   00:00  197466  Bc1 Nd7 g3 Nb6 Be3 Nxc4 Bxc5 Nxa3 
 9   +0.32   00:00  230178  Nf6+ gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 
10   +0.21   00:00  256208  Nf6+ gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 Kxf4 f7 Kf5 Bg7 Ke6 Bxf8 Kxd7 Bh6 
11   +0.21   00:00  303508  Bc1 Bxh4 Re2 Nd7 Be3 Be7 Red2 Nb6 Bxc5 Rxf4 
12   +0.30   00:00  366478  Nf6+ gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rfd8 Rg7 Kxf4 Rg5 Rh8 Rd5 Ke4 Bc1 Rae8 Rxd6 Rb8 g3 Kf5 Bf4 Rb7 Rd5+ Ke6 g4 hxg4 Kg3 
13   +0.21   00:00  432190  Nf6+ gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rfd8 Rg7 Kxf4 Rg5 Rh8 Rd5 Ke4 Bc1 Rae8 Rxd6 Rb8 g3 Kf5 Bf4 Rb7 Kf3 Rhh7 Bg5 Rhd7 
14   +0.30   00:00  462615  Nf6+ gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 Kxf4 f7 Kf5 Bg7 Ke6 Bxf8 Kxd7 
15   +0.34   00:00   1136K  Nf6+ gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rfd8 Rg7 Kxf4 Rg5 Rh8 Rd5 Ke4 f7 Rhf8 
16   +0.15   00:00   1639K  Nf6+ gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rfd8 Rg7 Kxf4 Rg5 Rh8 Rd5 Ke4 Bc1 Rae8 Rxd6 Rb8 g3 Kf5 Bf4 Rb7 Kf3 Rhh7 f7 Rbxf7 Rxb6 Rd7 
17   +0.15   00:00   1687K  Nf6+ gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rfd8 Rg7 Kxf4 Rg5 Rh8 Rd5 Ke4 Bc1 Rae8 Rxd6 Rb8 g3 Kf5 Bf4 Rb7 Kf3 Rhh7 f7 Rbxf7 Rxb6 Rd7 
18   +0.15   00:00   1931K  Nf6+ gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rfd8 Rg7 Kxf4 Rg5 Rh8 Rd5 Ke4 Bc1 Rae8 Rxd6 Rb8 g3 Kf5 Bf4 Rb7 Kf3 Rhh7 f7 Rbxf7 Rxb6 Rd7 Rc6 Rd3+ Kg2 
19   +0.15   00:00   2992K  Nf6+ gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rfd8 Rg7 Kxf4 Rg5 Rh8 Rd5 Ke4 Bc1 Rae8 Rxd6 Rb8 g3 Kf5 Bf4 Rb7 Kf3 Rhh7 f7 Rbxf7 Rxb6 Rd7 Rc6 Rd3+ Kg2 
20   +0.40   00:00   3056K  Nf6+ gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rfd8 Rg7 Ke4 g4 hxg4 Kg3 Kd3 f7 Kxc4 Bf6 Rd7 
21   +0.34   00:00   3122K  Nf6+ gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rfd8 Rg7 Kxf4 Rg5 Rh8 Rd5 Ke4 Bc1 Rae8 Rxd6 Kf5 Bb2 Rh7 Rd5+ Kg6 Rg5+ Kf7 Be5 Rg8 Ke3 Rxg5 hxg5 Kg6 Ke4 Rd7 
22   +0.25   00:00   3834K  Nf6+ gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rfd8 Rg7 Kxf4 Rg5 Rh8 Rd5 Ke4 Bc1 Rae8 Rxd6 Kf5 Rxb6 Re4 Rc6 Rxc4 Be3 Rc2+ Kg1 Rg8 b6 Rcxg2+ Kf1 R2g3 
23   +0.18   00:00   5690K  Nf6+ gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rfd8 Rh7 Rh8 Rc7 Rac8 Rd7 Rhd8 Rb7 Rb8 Rg7 Kxf4 Rg5 Rh8 Rd5 Kg4 Bc1 Rhg8 g3 Rbe8 Bh6 Re6 Bg7 Rge8 Rg5+ Kh3 f7 Re2+ Kf3 R8e3+ Kf4 
24   +0.18   00:00   6950K  Nf6+ gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rfd8 Rh7 Rh8 Rc7 Rac8 Rd7 Rhd8 Rb7 Rb8 Rg7 Kxf4 Rg5 Rh8 Rd5 Kg4 Rxd6 Rhf8 Rd7 Rbd8 Rg7+ Kf4 g3+ Kf5 Rg5+ Ke6 Ke3 Rg8 Kf4 Rxg5 hxg5 Rd2 Be5 Re2 
25   +0.21   00:00   8080K  Nf6+ gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rfd8 Rh7 Rh8 Rc7 Rac8 Rd7 Rhd8 Rb7 Rb8 Rg7 Kxf4 Rg5 Rh8 Rd5 Kg4 Rxd6 Rb7 g3 Re8 Rd5 Rg8 Bc1 Rf7 Rd6 Re8 Bf4 Re4 Rxb6 Rxc4 Rc6 Rc3 
26   +0.11   00:01  13139K  Nf6+ gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rfd8 Rh7 Rh8 Rc7 Rac8 Rd7 Rhd8 Rb7 Rb8 Rg7 Kxf4 Rg5 Rh8 Rd5 Ke4 g3 Rbc8 Kg2 Rcd8 Bc1 Rhe8 Rxh5 d5 
27   +0.08   00:02  31950K  Nf6+ gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rfd8 Rg7 Kxf4 Rg5 Rh8 Rd5 Ke4 g3 Rad8 Bc1 Rde8 Bg5 Rh7 Rxd6 Rb7 Bh6 Re5 Bf4 Re8 Kg2 Rf8 Kh3 Rff7 Bg5 Kf3 Re6 Rbd7 Rxb6 Rd1 
28   +0.08   00:02  34248K  Nf6+ gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rfd8 Rg7 Kxf4 Rg5 Rh8 Rd5 Ke4 g3 Rad8 Bc1 Rde8 Rxd6 Kf5 Rxb6 Re4 Bf4 Rxc4 Rd6 Rc2+ Ke3 Rc3+ Rd3 Rc2 b6 Re8+ Kf3 Kxf6 b7 Rb2 Rd6+ Kf7 Rd7+ Kf6 Rh7 Rb3+ Kg2 Kg6 Rh6+ Kg7 Rxh5 Rxb7 
29   +0.08   00:05  63052K  Nf6+ gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rfd8 Rg7 Kxf4 Rg5 Rh8 Rd5 Ke4 g3 Rad8 Bc1 Rde8 Rxd6 Kf5 Rxb6 Re4 Bf4 Rxc4 Rd6 Rc2+ Ke3 Rc3+ Rd3 Rc2 b6 Re8+ Kf3 Kxf6 b7 Rb2 Rd6+ Kf7 Rd7+ Kf6 Rh7 Rb3+ Kg2 Kg6 Rh6+ Kg7 Rxh5 Rxb7 
30   +0.08   00:05  66799K  Nf6+ gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rfd8 Re7 Re8 Rh7 Rh8 Rc7 Rac8 Rd7 Rhd8 Rb7 Rb8 Rg7 Kxf4 Rg5 Rh8 Rd5 Ke4 g3 Rbd8 Bc1 Rde8 Rxd6 Kf5 Rxb6 Re4 Rd6 Rxc4 Bf4 Rc2+ Ke3 Rc3+ Rd3 Rc2 b6 Re8+ Kf3 Kxf6 b7 Rb2 
31   +0.08   00:07  92051K  Nf6+ gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rfd8 Re7 Re8 Rh7 Rh8 Rc7 Rac8 Rd7 Rhd8 Rb7 Rb8 Rg7 Kxf4 Rg5 Rh8 Rd5 Ke4 g3 Rbd8 Bc1 Rde8 Rxd6 Kf5 Rxb6 Re4 Rd6 Rxc4 Bf4 Rc2+ Ke3 Rc3+ Rd3 Rc2 b6 Re8+ Kf3 Kxf6 b7 Rb2 Rd6+ Kf7 
32   +0.08   00:10 121101K  Nf6+ gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rfd8 Re7 Re8 Rh7 Rh8 Rc7 Rac8 Rd7 Rhd8 Rb7 Rb8 Rh7 Rh8 Re7 Rhe8 Rg7 Kxf4 g4 hxg4 h5 d5 cxd5 Rbd8 h6 Rxd5 Bc1+ Kf5 f7 Rf8 h7 Ke6 Kg3 Rh5 Kxg4 Rh2 Kg3 Rh1 Kg2 Rh5 Bb2 Rxf7 Rxf7 Kxf7 h8=Q Rxh8 Bxh8 Ke6 Bg7 Kd5 Kf2 Kc4 Bh6 Kxb5 
33   +0.26   00:11 132307K  Nf6+ gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rfd8 Rb7 Rab8 Rh7 Rh8 Re7 Rhe8 Rg7 Kxf4 g4 hxg4 h5 d5 cxd5 Rbd8 h6 Rxd5 Bc1+ Kf5 f7 Rf8 h7 Ke6 Kg3 Rh5 Kxg4 Rh2 Kg3 
34   +0.13   00:18 215352K  Nf6+ gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rad8 Rh7 Rh8 Rc7 Rc8 Rd7 Rhd8 Ra7 Ra8 Rb7 Rab8 Rh7 Rh8 Re7 Rhe8 Rg7 Kxf4 g4 hxg4 h5 d5 cxd5 Rbd8 h6 Rxd5 Bc1+ Kf5 f7 Rf8 h7 Ke6 Kg3 Rh5 Kxg4 Rh2 Kg3 Rh1 Bb2 Rxf7 Rxf7 Kxf7 h8=Q Rxh8 Bxh8 Ke6 Kg2 
35   +0.35   00:18 217667K  Nf6+ gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rad8 Rh7 Rh8 Rc7 Rc8 Rd7 Rhd8 Rb7 Rb8 Rh7 Rh8 Re7 Rhe8 Rg7 Kxf4 g4 hxg4 h5 d5 cxd5 Rbd8 h6 Rxd5 Bc1+ Kf5 f7 Rf8 h7 Ke6 Kg3 Rh5 Kxg4 Rh2 Kg3 Rh1 Bb2 Ke7 Kf4 Rh2 Be5 
36   +0.08   00:29 339417K  Nf6+ gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rfd8 Rb7 Rab8 Re7 Re8 Rg7 Kxf4 g4 hxg4 h5 d5 cxd5 Rbd8 Re7 Rf8 f7 Rxd5 Bc1+ Kf5 Bh6 Rdd8 Rb7 c4 Kg3 Rd3+ Kg2 Rdd8 Bxf8 Rxf8 h6 c3 Kg3 Kg5 h7 Kh6 Rxb6+ Kxh7 Rc6 Kg7 Rxc3 Kxf7 Rc4 Rb8 Rc5 Ke6 Kxg4 Kd6 Rh5 Rf8 
37   +0.12   00:37 441288K  Nf6+ gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rfd8 Re7 Re8 Rh7 Rh8 Rc7 Rac8 Rb7 Rb8 Re7 Rhe8 Rg7 Kxf4 g4 hxg4 h5 d5 cxd5 Rbd8 Bc1+ Kf5 f7 Rf8 Bh6 Rxd5 Rh7 Rdd8 Bxf8 Rxf8 Rg7 Ke6 Rxg4 Rxf7+ Kg3 Rh7 Rg6+ Kd5 h6 Kc4 Kh4 Kxb5 
38   +0.13   00:43 515938K  Nf6+ gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rfd8 Rb7 Rab8 Re7 Re8 Rg7 Kxf4 g4 hxg4 h5 d5 cxd5 Rbd8 Bc1+ Kf5 f7 Rf8 Bh6 Rxd5 Rh7 Rdd8 Bxf8 Rxf8 Rg7 Ke6 Rxg4 Rxf7+ Kg3 Rh7 Rg6+ Kf5 Kh4 Rd7 Rxb6 Rd4+ Kg3 Rd3+ Kg2 Rxa3 
39   +0.52   00:58 696709K  Nf6+ gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rfd8 Rc7 Rac8 Rh7 Rh8 Rb7 Rb8 Rd7 Rhd8 Re7 Re8 Rg7 Kxf4 g4 hxg4 h5 d5 cxd5 Rbd8 Bc1+ Kf5 f7 Rf8 Bh6 Rxd5 Rh7 g3+ Kf3 
40   +0.13   01:22 969258K  Nf6+ gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rad8 Rh7 Rh8 Ra7 Ra8 Re7 Rhe8 Rg7 Kxf4 g4 hxg4 h5 d5 cxd5 Rad8 Bc1+ Kf5 f7 Rf8 Bh6 Rxd5 Rh7 Rdd8 Bxf8 Rxf8 Rg7 Ke6 Rxg4 Rxf7+ Kg3 Rh7 Kh4 Kd5 Rg6 Kc4 Rxb6 Kb3 Kg5 Kxa3 
41   +0.00   02:08   1496M  Nf6+ gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rfd8 Rg7 Kxf4 Rg5 Rh8 Bc1+ Ke4 Rd5 Rae8 Rxd6 Kf5 Rxb6 Re4 Bg5 Rxc4 Rb7 Rc2+ Kg1 Rb2 Kh2 Rb3 b6 Rf8 Rc7 Ke6 Rxc5 Rxa3 b7 Rb3 Rc8 Kf7 Rc7+ Kg6 Rc8 
42   +0.00   02:33   1782M  Nf6+ gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rfd8 Rg7 Kxf4 Rg5 Rh8 Bc1+ Ke4 Rd5 Rae8 Rxd6 Kf5 Rxb6 Re4 Bg5 Rxc4 Ra6 Rc2+ Ke3 Rc3+ Kd2 Rxa3 f7 Rf8 Rf6+ Ke5 Rf4 Ke6 Rf6+ 
43   +0.00   03:11   2209M  Nf6+ gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rfd8 Rg7 Kxf4 Rg5 Rh8 Bc1+ Ke4 Rd5 Rae8 Rxd6 Kf5 Rxb6 Re4 Bg5 Rxc4 Rc6 Rc2+ Kg1 Rh7 b6 Rf7 Rc7 Ke6 g4 Rb2 gxh5 Rxb6 Rxc5 Rb3 Rc4 Rxa3 Re4+ Kf5 Rf4+ Ke6 
44   +0.00   03:45   2581M  Nf6+ gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rfd8 Rg7 Kxf4 Rg5 Rh8 Bc1+ Ke4 Rd5 Rae8 Rxd6 Kf5 Rxb6 Re4 Bg5 Rxc4 f7 Rf8 Rf6+ Ke5 b6 Rc3 Ke2 Rxa3 Rf4 Ra2+ Kf3 Ra3+ Kf2 Ra2+ Kf3 
45   +0.00   04:24   3022M  Nf6+ gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rfd8 Rg7 Kxf4 Rg5 Rh8 Bc1+ Ke4 Rd5 Rae8 Rxd6 Kf5 Rxb6 Re4 Bg5 Rxc4 f7 Rf8 Rf6+ Ke5 b6 Rc3 Ke2 Rxa3 Rf4 Ra2+ Kd3 Ke6 Rf6+ Ke5 Rf4 
46   +0.00   05:31   3768M  Nf6+ gxf6 exf6 Bd6 Rd5 Nd7 Rxe6+ Kf7 Rdxd6 cxd6 Re7+ Kg6 Rg7+ Kf5 Rxd7 b6 Kf2 Rfd8 Rg7 Kxf4 Rg5 Rh8 Bc1+ Ke4 Rd5 Rae8 Rxd6 Kf5 Rxb6 Re4 Bg5 Rxc4 f7 Rf8 Rf6+ Ke5 b6 Rc3 Ke2 Rxa3 Rf4 Ra2+ Kd3 Ke6 Rf6+ Ke5 Rf1 Ke6 
Nodes: 3768291130
Nodes/second: 11363040
Best move: Nf6+
https://www.chessbomb.com/arena/2019-gr ... ch_Arkadij

60 plies is nothing these days. Kaissa can do 72 in half an hour. One thread, and Multi PV. It does not do any extensions, only in emergencies :) It is a bit buggy though, I have not straightened her mating calculations out as people could read here, well I hope that is the main bug. Changed a few things in the last versions. that is why she does as many plies as that. Bench in 101969 nodes :lol:


rn2kr2/1pp1b1p1/4p3/1Pp1P2p/p1P1NP1P/P7/1B4P1/3RR1K1 w - -

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

72 37:17 +0.65 1.g3 Nd7 2.Nf2 Nb6 3.Rc1 Rd8 4.Rc2 Kf7
5.Re3 Rfe8 6.Kg2 g6 7.Rec3 Rd7 8.Bc1 Red8
9.Be3 Nc8 10.Rc1 b6 11.Kf3 Bf8
12.Ne4 Be7 13.Kf2 Kg7 14.Ra1 (3.974.700.317) 1776

72 37:17 +0.19 1.Bc1 Nd7 2.Re3 Bxh4 3.Rh3 Be7
4.Rxh5 Nb6 5.Ng5 Bxg5 6.Rxg5 Kf7
7.Be3 Rad8 8.Rc1 Rd3 9.Bxc5 Rfd8
10.Kf2 Rd2+ 11.Kg3 R8d3+ 12.Kh4 Nd7
13.Bb4 Re2 14.c5 (3.974.700.317) 1776

72 37:17 +0.11 1.b6 cxb6 2.g3 Nc6 3.Bc3 Nd4 4.Bxd4 cxd4
5.Nd6+ Bxd6 6.exd6 Kd7 7.Rxd4 Rac8
8.Kg2 Rc6 9.Rb1 Rd8 10.Rb5 g6 11.Rg5 Rxd6
12.Rxd6+ Kxd6 13.Rxg6 Kc5 14.Rxe6 (3.974.700.317) 1776

72 37:17 0.00 1.Rf1 Nd7 2.g3 Nb6 3.Rc1 Rd8 4.Rf3 Kf7
5.Kf2 Kg6 6.Ke2 Rfe8 7.Rd3 Rxd3
8.Kxd3 Rd8+ 9.Ke3 Rf8 10.Nd2 Kf5
11.Kd3 Rd8+ 12.Ke3 (3.974.700.317) 1776

72 37:17 0.00 1.Nf6+ gxf6 2.exf6 Rxf6 3.Bxf6 Bxf6
4.Rxe6+ Kf7 5.Re4 Bd4+ 6.Rexd4 cxd4
7.Rxd4 Ke7 8.Re4+ Kd8 9.Re5 Nd7
10.Rxh5 Ke7 11.Kf2 Nf6 12.Re5+ Kf7
13.Rf5 Ke7 (3.974.700.317) 1776

After now entering 1. Nxf6 and with default contempt 24, there is some advantage seen.




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

72 8:30 +0.26 1...gxf6 2.exf6 Bd6 3.Rd5 Nd7
4.Rxe6+ Kf7 5.Rdxd6 cxd6 6.Re7+ Kg6
7.Rg7+ Kf5 8.Rxd7 Kxf4 9.Kh2 b6
10.Rxd6 Rab8 11.Rd7 Rbd8 12.Rb7 Rb8
13.Rc7 Kf5 14.Rh7 Rh8 (965.515.646) 1891

72 8:30 +1.80 1...Kf7 2.Nxh5 g6 3.Nf6 c6 4.Bc3 Rd8
5.Rxd8 Bxd8 6.Rd1 Be7 7.Rb1 b6
8.bxc6 Nxc6 9.Rxb6 Nd4 10.Ne4 Rd8
11.Kf2 Bxh4+ 12.g3 Be7 13.Rb7 Ke8
14.Nf6+ Kf8 (965.515.646) 1891

71 8:30 +8.83 1...Bxf6 2.exf6 Kf7 3.fxg7 Rg8 4.f5 exf5
5.Rf1 Kg6 6.Rd5 c6 7.Rdxf5 cxb5
8.Rg5+ Kh7 9.Rxh5+ Kg6 10.Rg5+ Kh7
11.cxb5 Nd7 12.Rd1 Rad8 13.Rd6 Nf6
14.Rxf6 Rd1+ (965.515.646) 1891

71 8:30 +10.84 1...Rxf6 2.exf6 Bxf6 3.Bxf6 Nd7
4.Rxe6+ Kf7 5.Re7+ Kxf6 6.Rdxd7 Kf5
7.Rd5+ Kf6 8.Rxc7 Rb8 9.Rxh5 b6
10.Re5 Rd8 11.Rc6+ Kf7 12.Rxb6 Rd4
13.Rxc5 Kg8 14.Rb7 Rd1+ (965.515.646) 1891
Debugging is twice as hard as writing the code in the first
place. Therefore, if you write the code as cleverly as possible, you
are, by definition, not smart enough to debug it.
-- Brian W. Kernighan

User avatar
Eelco de Groot
Posts: 4073
Joined: Sun Mar 12, 2006 1:40 am
Location: Groningen

Re: Vachier-Lagrave - Naiditsch, GRENKE 2019 R3 : 25.Nf6+ !

Post by Eelco de Groot » Wed Apr 24, 2019 8:27 pm

After 1...gxf6



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

69 4:00 +0.69 2.exf6 Bd6 3.Rd5 Nd7 4.Rxe6+ Kf7
5.Rdxd6 cxd6 6.Re7+ Kg6 7.Rg7+ Kf5
8.Rxd7 Kxf4 9.Kh2 b6 10.Rxd6 Rab8
11.Rd5 Ke4 12.Rxh5 Kd3 13.Rf5 Kxc4
14.h5 Rbe8 15.h6 (472.894.846) 1964

68 4:00 -3.19 2.f5 Nd7 3.exf6 Nxf6 4.Rxe6 Kf7 5.b6 cxb6
6.Rde1 Rfe8 7.Rxb6 Ng4 8.f6 Bxf6
9.Rf1 Ra6 10.Rxb7+ Kg6 11.Bxf6 Rxf6
12.Rb5 Rxf1+ 13.Kxf1 Re5 14.Ra5 Ne3+
15.Kf2 (472.894.846) 1964

68 4:00 -5.26 2.g3 f5 3.Bc1 Nd7 4.Be3 Rg8 5.Kf2 Nb6
6.Rc1 Rd8 7.Rc3 Kf7 8.Rh1 Rg4 9.Rhc1 Rdg8
10.Bd2 Rc8 11.Rd3 Ra8 12.Rcc3 Rag8
13.Bc1 R4g6 14.Rd1 R6g7 15.Rdd3 (472.894.846) 1964

68 4:00 -5.26 2.Bc1 f5 3.g3 Nd7 4.Be3 Rg8 5.Kf2 Nb6
6.Rc1 Rd8 7.Rc3 Kf7 8.Rh1 Rg4 9.Rhc1 Rdg8
10.Bd2 Rc8 11.Rd3 Ra8 12.Rcc3 Rag8
13.Bc1 R4g6 14.Rd1 R6g7 15.Rdd3 (472.894.846) 1964

68 4:00 -5.27 2.Rc1 f5 3.g3 Nd7 4.Rc3 Nb6 5.Bc1 Rg8
6.Kf2 Rd8 7.Be3 Kf7 8.Rh1 Kg6 9.Rhc1 Rd7
10.Kf3 Kf7 11.Kf2 Ke8 12.R1c2 Rd8
13.Rc1 Rg6 14.Kf3 Kf7 15.Bf2 (472.894.846) 1964
___________________________________________________________

70 7:18 +1.07 2.exf6 Bd6 3.Rd5 Nd7 4.Rxe6+ Kf7
5.Rdxd6 cxd6 6.Re7+ Kg6 7.Rg7+ Kf5
8.Rxd7 Kxf4 9.Kh2 Rab8 10.f7 Kf5
11.Bg7 Ke6 12.Bxf8 Kxd7 13.Bg7 Ke7
14.f8Q+ Rxf8 15.Bxf8+ (857.949.400) 1956

70 7:18 -4.01 2.f5 Nd7 3.exf6 Nxf6 4.Rxe6 Kf7
5.Bxf6 Bxf6 6.Rd7+ Kg8 7.Rxc7 Rf7
8.b6 Kg7 9.g4 hxg4 10.Re4 Rxc7
11.bxc7 Kf7 12.h5 Rc8 13.Rxg4 Rxc7
14.Rg6 Rd7 15.Rh6 (857.949.400) 1956

70 7:18 -5.28 2.g3 f5 3.Bc1 Nd7 4.Be3 Rg8 5.Kf2 Nb6
6.Rc1 Rd8 7.Rc3 Rd7 8.Kf3 Kf7 9.Rec1 Rdd8
10.Kf2 Rg4 11.Kf3 Rg6 12.R1c2 Rgg8
13.Rc1 Rd7 14.Rg1 Rf8 15.Ke2 (857.949.400) 1956

70 7:18 -5.28 2.Bc1 f5 3.g3 Nd7 4.Be3 Rg8 5.Kf2 Nb6
6.Rc1 Rd8 7.Rc3 Rd7 8.Kf3 Kf7 9.Rec1 Rdd8
10.Kf2 Rg4 11.Kf3 Rg6 12.R1c2 Rgg8
13.Rc1 Rd7 14.Rg1 Rh8 15.Rgc1 (857.949.400) 1956

70 7:18 -5.57 2.g4 f5 3.g5 Nd7 4.Rd2 Nb6 5.Rc1 Kf7
6.Kf1 Rad8 7.Rxd8 Rxd8 8.Ke2 Bf8
9.Ke3 Nc8 10.Bc3 Ne7 11.Rh1 Ng6
12.Bb2 Be7 13.Bc3 c6 14.bxc6 bxc6
15.Rb1 (857.949.400) 1956

After 2.exf6 both the simple 2...Rxf6 and 2...Bd6 still seem possible. But 2...Bd6 is the better one. Contempt changes eval, search does too.




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

70 5:43 0.00 2...Bd6 3.Rd5 Nd7 4.Rxe6+ Kf7
5.Rdxd6 cxd6 6.Re7+ Kg6 7.Rxd7 Rae8
8.Rxd6 Rd8 9.Re6 Rfe8 10.Rb6 Rd7
11.Be5 Kf5 12.Kf1 Rf8 13.Ke1 Rff7
14.Ke2 Rd8 15.Bc3 Rh7 (676.001.500) 1965

70 5:43 +0.41 2...Rxf6 3.Bxf6 Bxf6 4.Rxe6+ Kf7
5.Rxf6+ Kxf6 6.Rd8 Kf5 7.g3 c6
8.bxc6 bxc6 9.Kf2 Ke4 10.Ke2 Ra7
11.Rxb8 Rh7 12.Rc8 Rb7 13.Rxc6 Rb3
14.Rxc5 Rxg3 15.Rxh5 Rxa3 (676.001.500) 1965

70 5:43 +1.35 2...Nd7 3.fxe7 Kxe7 4.Rd5 Rxf4 5.Bc1 Rd4
6.Rxh5 Rf8 7.Bg5+ Kf7 8.Rh7+ Kg8
9.Re7 e5 10.Rf1 Rxf1+ 11.Kxf1 Nb6
12.Rxc7 Nxc4 13.Rxb7 Nxa3 14.Rb8+ Kg7
15.h5 Nc4 (676.001.500) 1965

70 5:43 +3.86 2...Kf7 3.fxe7 Kxe7 4.Rd5 Nd7 5.f5 e5
6.Bxe5 Nxe5 7.Rexe5+ Kf7 8.Rd7+ Kf6
9.Rxc5 Rfc8 10.Rdxc7 Rxc7 11.Rxc7 Rb8
12.Rh7 Kxf5 13.Rxh5+ Ke4 14.c5 Kd4
15.Rf5 Rh8 (676.001.500) 1965

70 5:43 +4.27 2...Rf7 3.Rxe6 Nd7 4.Rde1 Nb6
5.Rxe7+ Rxe7 6.Rxe7+ Kf8 7.Rxc7 Nxc4
8.Be5 b6 9.g4 hxg4 10.h5 Nxe5
11.fxe5 Re8 12.h6 Rxe5 13.h7 Rh5
14.Rc8+ Kf7 15.h8Q Rxh8 (676.001.500) 1965
_____________________________________________________
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_____________________________________________________

77 17:01 0.00 2...Bd6 3.Rd5 Nd7 4.Rxe6+ Kf7
5.Rdxd6 cxd6 6.Re7+ Kg6 7.Rxd7 Rae8
8.Rxd6 Rd8 9.Re6 Rfe8 10.Rb6 Rd7
11.Be5 Kf5 12.Kf1 Rg8 13.Kf2 Rd2+
14.Ke1 Rd7 (2.007.202.211) 1964

77 17:01 +0.79 2...Rxf6 3.Bxf6 Bxf6 4.Rxe6+ Kf7
5.Rxf6+ Kxf6 6.Rd8 Kf5 7.g3 c6
8.bxc6 bxc6 9.Kh2 Ke4 10.Kh3 Ra7
11.Rxb8 Re7 12.Rb1 Kf5 13.Rb6 Ke4
14.Rb8 Rg7 15.f5 Rf7 (2.007.202.211) 1964

77 17:01 +1.06 2...Nd7 3.fxe7 Kxe7 4.Rd5 Rxf4 5.Bc1 Rd4
6.Rxh5 Rf8 7.Bg5+ Kf7 8.Rh7+ Kg8
9.Re7 e5 10.Rf1 Rxf1+ 11.Kxf1 c6
12.bxc6 bxc6 13.Kf2 Nb6 14.Rxe5 Nxc4
15.Rxc5 Nxa3 (2.007.202.211) 1964

77 17:01 +3.94 2...Kf7 3.fxe7 Kxe7 4.Rd5 Nd7 5.f5 e5
6.Bxe5 Nxe5 7.Rexe5+ Kf7 8.Rd7+ Kf6
9.Rxc5 Rac8 10.Rdxc7 Rxc7 11.Rxc7 Rb8
12.Rh7 Kxf5 13.Rxh5+ Ke4 14.c5 Rd8
15.Rh7 Kd5 (2.007.202.211) 1964

77 17:01 +5.93 2...Nc6 3.bxc6 Rxf6 4.Bxf6 Bxf6
5.Rxe6+ Kf7 6.cxb7 Rb8 7.Rc6 Rxb7
8.Rd7+ Ke8 9.Rh7 Bxh4 10.Rg6 Kf8
11.Ra6 Bd8 12.Rxa4 Kg8 13.Rd7 Rb8
14.Kh2 c6 15.Ra6 Bf6 (2.007.202.211) 1964
__________________________________________________
.
.
__________________________________________________

80 27:19 +0.84 2...Bd6 3.Rd5 Nd7 4.Rxe6+ Kf7
5.Rdxd6 cxd6 6.Re7+ Kg6 7.Rg7+ Kf5
8.Rxd7 Rab8 9.Kf2 Rfd8 10.Rh7 Rh8
11.Rc7 Rhc8 12.Rg7 Rg8 13.f7 Rgf8
14.Kf3 Ke6 15.Rg6+ Kxf7 (3.240.747.774) 1976

80 27:19 +0.93 2...Nd7 3.fxe7 Kxe7 4.Rd5 Rxf4 5.Bc1 Rd4
6.Rxh5 Rf8 7.Bg5+ Kf7 8.Rh7+ Kg8
9.Re7 e5 10.Rf1 Rxf1+ 11.Kxf1 c6
12.bxc6 bxc6 13.Kf2 Nb6 14.Rxe5 Rxc4
15.Re6 Rc2+ (3.240.747.774) 1976

80 27:19 +1.18 2...Rxf6 3.Bxf6 Bxf6 4.Rxe6+ Kf7
5.Rxf6+ Kxf6 6.Rd8 Kf5 7.Kf2 Kxf4
8.Rf8+ Kg4 9.Rg8+ Kf4 10.g3+ Kf5
11.g4+ Ke6 12.gxh5 Kf7 13.Rc8 c6
14.bxc6 bxc6 15.Kf3 Kg7 (3.240.747.774) 1976

79 27:19 +3.88 2...Kf7 3.fxe7 Kxe7 4.Rd5 Nd7 5.f5 e5
6.Bxe5 Nxe5 7.Rexe5+ Kf7 8.Rd7+ Kf6
9.Rxc5 Rac8 10.Rdxc7 Rxc7 11.Rxc7 Rb8
12.Rh7 Kxf5 13.Rxh5+ Kg4 14.Rh7 b6
15.Rh6 Kg3 (3.240.747.774) 1976

79 27:19 +5.86 2...Nc6 3.bxc6 Rxf6 4.Bxf6 Bxf6
5.Rxe6+ Kf7 6.cxb7 Rb8 7.Rc6 Rxb7
8.Rd7+ Ke8 9.Rh7 Bxh4 10.Rg6 Kf8
11.Ra6 Kg8 12.Rd7 Rb8 13.g3 Bxg3
14.Rg6+ Kf8 15.Rxg3 Rb1+ (3.240.747.774) 1976
Debugging is twice as hard as writing the code in the first
place. Therefore, if you write the code as cleverly as possible, you
are, by definition, not smart enough to debug it.
-- Brian W. Kernighan

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Eelco de Groot
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Re: Vachier-Lagrave - Naiditsch, GRENKE 2019 R3 : 25.Nf6+ !

Post by Eelco de Groot » Wed Apr 24, 2019 9:45 pm

New version, not as fast and does more extensions. Bench about double again.
Total time (ms) : 1623
Nodes searched : 2128442
Nodes/second : 1311424



Engine: Kaissa IV (search_009, 512 MB)
by T. Romstad, M. Costalba, J. Kiiski, G. Linscott

47 8:18 +1.62 1.Nf6+ gxf6 2.exf6 Nd7 {?! This is Not the best move, I think there is still a bug here :( }
3.fxe7 Kxe7 4.Rd5 Rxf4 5.Bc1 Rd4 6.Rxh5 Re8
7.Rh7+ Kd6 8.Be3 Rd3 9.h5 e5 10.Rh6+ Re6
11.Rh8 c6 12.bxc6 Kxc6 13.Rc8+ Kb6
14.h6 (966.547.536) 1937

47 8:18 +0.23 1.b6 cxb6 2.g3 Nc6 3.Bc3 Nd4 4.Bxd4 cxd4
5.Nd6+ Bxd6 6.exd6 Rc8 7.Rxd4 Kd7
8.Rb1 Rc6 9.Kg2 Ra8 10.Kf3 Ra5
11.Ke4 Rac5 12.Rb4 Ra5 13.Ke3 Rac5
14.Kf3 (966.547.536) 1937

47 8:18 0.00 1.Rf1 Nd7 2.Bc1 Bxh4 3.g3 Be7 4.Be3 Rd8
5.Kg2 Kf7 6.Rd3 Nb6 7.Rc3 Nd7 (966.547.536) 1937

47 8:18 0.00 1.Bc1 Nd7 2.Rd3 Bxh4 3.g3 Be7 4.Be3 Rd8
5.Red1 b6 6.Kg2 Rh8 7.Nc3 g5 8.Nxa4 gxf4
9.Bxf4 Rf8 10.Re1 h4 11.Nc3 hxg3
12.Ne2 Rf5 13.Rh1 Nf8 14.Rxd8+ (966.547.536) 1937

47 8:18 0.00 1.g3 Nd7 2.Bc1 Nb6 3.Rd3 Nxc4 4.Rc3 Nb6
5.Nxc5 Nd5 6.Rc2 Bxc5+ 7.Rxc5 Ke7
8.Bd2 Kf7 9.f5 Rac8 10.Bg5 c6
11.bxc6 Rxc6 12.Ra5 Rfc8 13.Rd1 Rc5
14.fxe6+ (966.547.536) 1937
Debugging is twice as hard as writing the code in the first
place. Therefore, if you write the code as cleverly as possible, you
are, by definition, not smart enough to debug it.
-- Brian W. Kernighan

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Eelco de Groot
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Re: Vachier-Lagrave - Naiditsch, GRENKE 2019 R3 : 25.Nf6+ !

Post by Eelco de Groot » Fri Jun 14, 2019 3:52 pm

in response to
rn2kr2/1pp1b1p1/4p3/1Pp1P2p/p1P1NP1P/P7/1B4P1/3RR1K1 w - - bm Nf6+; -> Not sure it's enough to win !
This is still (a) Kaissa IV but much closer to Stockfish than the above so less bugs than in that version. I think it is a draw but enough chances to go wrong because of the singular positions, so Nf6+ has practical chances. Other moves only draw also, so why not try something sharp.

26...Bd6 is I think best:



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

45 206:15 +0.34 2...Bd6 3.Rd5 Nd7 4.Rxe6+ Kf7
5.Rdxd6 cxd6 6.Re7+ Kg6 7.Rg7+ Kf5
8.Rxd7 b6 9.Kf2 Rad8 10.Rh7 Kg4
11.Rb7 Rb8 12.Re7 Rbe8 13.g3 Rxe7
14.fxe7 Re8 15.Bf6 Kf5 (22.859.892.074) 1847

45 206:15 +1.74 2...Rxf6 3.Bxf6 Bxf6 4.Rxe6+ Kf7
5.Rxf6+ Kxf6 6.Rd8 c6 7.bxc6 bxc6
8.Kf2 Kf5 9.Kf3 Ke6 10.g3 Ke7 11.Rh8 Kf6
12.g4 hxg4+ 13.Kg3 Kg7 14.Rc8 Ra7
15.Rxb8 Rd7 (22.859.892.074) 1847

45 206:15 +2.02 2...Nd7 3.fxe7 Kxe7 4.Rd5 Rxf4 5.Bc1 Rd4
6.Rxh5 Rf8 7.Bg5+ Kf7 8.Rh7+ Kg8
9.Re7 e5 10.Rf1 Rxf1+ 11.Kxf1 c6
12.h5 cxb5 13.cxb5 c4 14.h6 c3
15.Be3 c2 (22.859.892.074) 1847

44 206:15 +6.46 2...Kf7 3.fxe7 Kxe7 4.Rd5 Nd7 5.f5 e5
6.Bxe5 Nxe5 7.Rexe5+ Kf7 8.Rd7+ Kf6
9.Rxc5 Rac8 10.Rdxc7 Rxc7 11.Rxc7 Rb8
12.Rh7 Kxf5 13.Rxh5+ Ke4 14.Rd5 Rc8
15.Rd7 b6 (22.859.892.074) 1847

44 206:15 +7.13 2...Rf7 3.Rxe6 Nd7 4.fxe7 Rxe7 5.Rh6 Rc8
6.Rxh5 c6 7.Be5 Nf8 8.Bd6 Rd8 9.bxc6 bxc6
10.Rxc5 Ng6 11.h5 Nxf4 12.Rg5 Rdd7
13.h6 Rh7 14.Re1+ Kf7 15.Bxf4 Rxh6 (22.859.892.074) 1847

And after 25. Nf6+ gxf6 26.exf6 Bd6 27.Rd5 Nd7 28.Rxe6+ Kf7 29.Rdxd6 cxd6 30.Re7+



Engine: Kaissa IV NoContempt (512 MB)
by T. Romstad, M. Costalba, J. Kiiski, G. Linscott
.
.
.
54/76 113:07 +0.41 6...Kg6 7.Rg7+ Kf5 8.Rxd7 b6 9.Kf2 Rad8
10.Rh7 Rh8 11.Rb7 Rb8 12.Re7 Rhe8
13.Rg7 Kxf4 14.g4 hxg4 15.h5 d5
16.cxd5 Rbd8 17.Re7 Rf8 18.f7 Rxd5
19.Bc1+ Kf5 (11.729.757.819) 1728

55/70 128:35 +0.35 6...Kg6 7.Rg7+ Kf5 8.Rxd7 b6 9.Kf2 Rad8
10.Rh7 Rh8 11.Rb7 Rb8 12.Re7 Rhe8
13.Rg7 Kxf4 14.g4 hxg4 15.h5 d5
16.cxd5 Rbd8 17.Re7 Rf8 18.f7 Rxd5
19.Bc1+ Kf5 (13.351.106.355) 1730
Debugging is twice as hard as writing the code in the first
place. Therefore, if you write the code as cleverly as possible, you
are, by definition, not smart enough to debug it.
-- Brian W. Kernighan

zullil
Posts: 5178
Joined: Mon Jan 08, 2007 11:31 pm
Location: PA USA
Full name: Louis Zulli

Re: Vachier-Lagrave - Naiditsch, GRENKE 2019 R3 : 25.Nf6+ !

Post by zullil » Fri Jun 14, 2019 6:56 pm

Eelco de Groot wrote:
Fri Jun 14, 2019 3:52 pm
in response to
rn2kr2/1pp1b1p1/4p3/1Pp1P2p/p1P1NP1P/P7/1B4P1/3RR1K1 w - - bm Nf6+; -> Not sure it's enough to win !
This is still (a) Kaissa IV but much closer to Stockfish than the above so less bugs than in that version. I think it is a draw but enough chances to go wrong because of the singular positions, so Nf6+ has practical chances. Other moves only draw also, so why not try something sharp.

26...Bd6 is I think best:

And after 25. Nf6+ gxf6 26.exf6 Bd6 27.Rd5 Nd7 28.Rxe6+ Kf7 29.Rdxd6 cxd6 30.Re7+



Engine: Kaissa IV NoContempt (512 MB)
by T. Romstad, M. Costalba, J. Kiiski, G. Linscott
.
.
.
54/76 113:07 +0.41 6...Kg6 7.Rg7+ Kf5 8.Rxd7 b6 9.Kf2 Rad8
10.Rh7 Rh8 11.Rb7 Rb8 12.Re7 Rhe8
13.Rg7 Kxf4 14.g4 hxg4 15.h5 d5
16.cxd5 Rbd8 17.Re7 Rf8 18.f7 Rxd5
19.Bc1+ Kf5 (11.729.757.819) 1728

55/70 128:35 +0.35 6...Kg6 7.Rg7+ Kf5 8.Rxd7 b6 9.Kf2 Rad8
10.Rh7 Rh8 11.Rb7 Rb8 12.Re7 Rhe8
13.Rg7 Kxf4 14.g4 hxg4 15.h5 d5
16.cxd5 Rbd8 17.Re7 Rf8 18.f7 Rxd5
19.Bc1+ Kf5 (13.351.106.355) 1730
But with 6-man endgame tables, Cfish-dev quickly sees 0.00:

0.00 30... Kg6 31. Rg7+ Kf5 32. Rxd7 b6 33. Kf2 Rad8 34. Rh7 Rh8 35. Rc7 Rc8 36. Re7 Rhe8 37. Rg7 Kxf4 38. g4 hxg4 39. h5 d5 40. cxd5 Rcd8 41. Bc1+ Kf5 42. f7 Rf8 43. Bh6 Rxd5 44. Rh7 Rxf7 45. Rxf7+ Ke4 46. Rf4+ Kd3 47. Rf6 Kc4 48. Rxb6 Rxh5 49. Be3 Rh2+ 50. Ke1 Rb2 51. Rc6 Rxb5 52. Kd1 Kd5 53. Ra6 g3 54. Kc2 Rb3 55. Bc1 c4 56. Rf6 Ke5 57. Rf8 Ke4 58. Rf4+ Kd5 59. Rg4 Rf3 60. Kd2 Rb3 61. Kc2 (depth 45, 0:01:39)

Which might explain why Nf6+ isn't a winner.

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Re: Vachier-Lagrave - Naiditsch, GRENKE 2019 R3 : 25.Nf6+ !

Post by Eelco de Groot » Fri Jun 14, 2019 7:17 pm

Thanks Louis, I can't really test that without tablebases on my computer :) I would have thought that Vincent always tests with TB loaded though. But maybe it is just that Stockfish at that time saw things differently. And Dann also quickly saw 0.00 scores. For OTB play still a good move though and it looks spectacular.

Curious Louis if you think that CFish is much faster on your machine also? Or just with the bench? I would suspect that on Linux the Large Pages matter and they are better in Ronald's version, but I don't think that would explain everything?
Debugging is twice as hard as writing the code in the first
place. Therefore, if you write the code as cleverly as possible, you
are, by definition, not smart enough to debug it.
-- Brian W. Kernighan

zullil
Posts: 5178
Joined: Mon Jan 08, 2007 11:31 pm
Location: PA USA
Full name: Louis Zulli

Re: Vachier-Lagrave - Naiditsch, GRENKE 2019 R3 : 25.Nf6+ !

Post by zullil » Fri Jun 14, 2019 10:28 pm

Eelco de Groot wrote:
Fri Jun 14, 2019 7:17 pm
Thanks Louis, I can't really test that without tablebases on my computer :) I would have thought that Vincent always tests with TB loaded though. But maybe it is just that Stockfish at that time saw things differently. And Dann also quickly saw 0.00 scores. For OTB play still a good move though and it looks spectacular.

Curious Louis if you think that CFish is much faster on your machine also? Or just with the bench? I would suspect that on Linux the Large Pages matter and they are better in Ronald's version, but I don't think that would explain everything?
Eelco,

About speeds, please see this post.

Louis

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Re: Vachier-Lagrave - Naiditsch, GRENKE 2019 R3 : 25.Nf6+ !

Post by Eelco de Groot » Sat Jun 15, 2019 12:12 am

Cool, thanks Louis!
Debugging is twice as hard as writing the code in the first
place. Therefore, if you write the code as cleverly as possible, you
are, by definition, not smart enough to debug it.
-- Brian W. Kernighan

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