nice correspondence move

[Master Om]

Stockfish 9 can solve this fast with 4 cores:

Analysis by Stockfish 9 64 BMI2:

40.Re1 Qc7 41.Bd3 Qd8 42.Qf2 Nd7 43.Bc3 Nf6 44.Qg3 Nh5 45.Qg4 Nf6 46.Qf3 Qc7 47.Qg3 Nh5 48.Qe3 Qd8 49.Qf3 Qh4 50.Rg4 Qf6 51.Rf1 Qe7 52.Rg2 Nf6 53.Rb1 Rc8 54.Re1 Nd7 55.Rg3 Qf6 56.Qe3 Qh4 57.e5 dxe5
+- (1.97) Depth: 32/42 00:00:50 349mN, tb=208
40.Rxg7
+- (2.05 ++) Depth: 33/38 00:00:59 421mN, tb=1010
40.Rxg7
+- (2.12 ++) Depth: 33/57 00:00:59 421mN, tb=1010
40.Rxg7
+- (2.24 ++) Depth: 33/61 00:00:59 421mN, tb=1010
40.Rxg7
+- (2.40 ++) Depth: 33/61 00:00:59 422mN, tb=1024
40.Rxg7
+- (2.61 ++) Depth: 33/62 00:01:03 453mN, tb=4601
40.Rxg7 Rxg7 41.Rxg7 Kxg7 42.Qxh6+ Kg8 43.Bg5 Qf8 44.Qh4 Rxe4 45.Bxe4 Nxe4 46.Qxe4 f6 47.Bd2 Nd8 48.Kh2 Kf7 49.Kg2 Qg7+ 50.Kf2 Kf8 51.Bf4 Qd7 52.Ke3 Nf7 53.Qe6 Qd8 54.Bg3 Kg7 55.Bh4 Nh6 56.Ke2 Nf7 57.Kd3 Nh6 58.Bg3 Nf7 59.h4 Kf8 60.h5 Kg7 61.h6+ Nxh6
+- (2.63) Depth: 33/66 00:01:05 472mN, tb=6080
40.Rxg7 Rxg7
+- (2.55 --) Depth: 34/62 00:01:07 492mN, tb=7809
40.Rxg7
+- (2.63 ++) Depth: 34/62 00:01:08 500mN, tb=8536
40.Rxg7 Rxg7
+- (2.48 --) Depth: 34/62 00:01:10 517mN, tb=11737
40.Rxg7
+- (2.61 ++) Depth: 34/62 00:01:11 524mN, tb=12070

BTW now SF9 is better than Houdini6 in Arasan suite.

Interesting that your search didn't get "hung up" on Qf4. See if you can reproduce your success.

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "?"]
[Black "?"]
[Result "*"]
[FEN "4r1rk/p3qpp1/1pnp1n1p/5P2/P1PPP3/4Q2P/2BB2R1/6RK w - - 0 40"]
[SetUp "1"]

40. Rxg7 {(0:00:28) 159673kN}{[%eval 250,28,Stockfish 9 64 POPCNT][%meval
TB:54]} 40... Rxg7 41. Rxg7 Kxg7 42. Qxh6+ Kg8 43. Bg5 Qf8 44. Qh4 Nxe4 45.
Bxe4 Rxe4 46. Qxe4 f6 (46... Qg7 47. h4 Na5 48. Qd5 Qh8 (48... Nb3 49. c5 dxc5
50. f6 Qg6 51. Qxb3 Qe4+ 52. Kh2 Qxd4 53. Kg2 Qe4+ 54. Kf2 Qf5+ 55. Kg3 Qe5+
56. Kh3 Qf5+ 57. Kh2 c4 58. Qc3 Qe4 59. Qg3 Kh7 {(0:00:30) 174124kN}{[%eval
236,29,Stockfish 9 64 POPCNT][%meval TB:125]} 60. Bf4 {(0:00:29) 165868kN}
{[%eval 243,28,Stockfish 9 64 POPCNT][%meval TB:67]})49. Kh2 Qh5 50. Bf6 Qe2+
51. Kg3 Qe3+ 52. Kg4 Qe2+ 53. Kg5 Qe8 54. Qg2 Kh7 55. Kf4 Qf8 56. Qd5 Qh6+ 57.
Bg5 Qh5 58. Kg3 Kg7 59. f6+ Kg8 {(0:00:37) 225528kN}{[%eval 267,30,Stockfish 9
64 POPCNT][%meval TB:539]} 60. c5 {(0:00:37) 221706kN}{[%eval 256,30,Stockfish
9 64 POPCNT][%meval TB:509]} 60... Qe2 {(0:00:36) 217191kN}{[%eval
249,30,Stockfish 9 64 POPCNT][%meval TB:456]} 61. Qxd6 {(0:00:31) 181781kN}
{[%eval 241,29,Stockfish 9 64 POPCNT][%meval TB:186]}) 47. Bf4 Na5 48. Qe6+
Qf7 49. h4 Kg7 50. Kg2 Nxc4 51. h5 Qxh5 52. Qxc4 Qg4+ 53. Bg3 Qe4+ (53... Kh6
54. Qd5 Kg5 55. Qxd6 Qe4+ 56. Kg1 Qxf5 57. Bf2 {(0:00:41) 253370kN}{[%eval
272,31,Stockfish 9 64 POPCNT][%meval TB:1k]} 57... Qf3 {(0:00:41) 251604kN}
{[%eval 261,31,Stockfish 9 64 POPCNT][%meval TB:1k]} 58. Qe7 {(0:00:41)
249915kN}{[%eval 254,31,Stockfish 9 64 POPCNT][%meval TB:1k]} 58... Kg6
{(0:00:39) 236745kN}{[%eval 246,30,Stockfish 9 64 POPCNT][%meval TB:727]}) 54.
Kh2 Qxf5 (54... d5 55. Qc7+ Kh6 56. Qf4+ Qxf4 57. Bxf4+ Kh5 58. Kg3 a6 59. Kf3
b5 {(0:00:46) 281327kN}{[%eval 280,32,Stockfish 9 64 POPCNT][%meval TB:2k]}
60. axb5 {(0:00:44) 274313kN}{[%eval 268,32,Stockfish 9 64 POPCNT][%meval
TB:2k]} 60... axb5 {(0:00:44) 272302kN}{[%eval 261,32,Stockfish 9 64
POPCNT][%meval TB:2k]} 61. Bd2 {(0:00:41) 255089kN}{[%eval 268,31,Stockfish 9
64 POPCNT][%meval TB:1k]}) 55. d5 Qd7 56. Kg2 Kf7 57. Kf3 Qf5+ 58. Ke3 Qg5+
59. Bf4 Qh4 60. Kd3 Qh3+ 61. Kd2 Qd7 62. Kc3 Qe7 63. Kb2 Ke8 64. Qc8+ Kf7
{(0:00:51) 317312kN}{[%eval 277,33,Stockfish 9 64 POPCNT][%meval TB:7k]} 65.
Z0 (65. Kb3 {(0:00:50) 313232kN}{[%eval 268,33,Stockfish 9 64 POPCNT][%meval
TB:6k]} 65... Qe4 {(0:00:50) 312081kN}{[%eval 280,33,Stockfish 9 64
POPCNT][%meval TB:6k]} 66. Qd7+ {(0:00:50) 311020kN}{[%eval 287,33,Stockfish 9
64 POPCNT][%meval TB:6k]} 66... Kg6 {(0:00:49) 305146kN}{[%eval
295,32,Stockfish 9 64 POPCNT][%meval TB:5k]}) *

[zullil]

Stockfish 9 can solve this fast with 4 cores:

Analysis by Stockfish 9 64 BMI2:

40.Re1 Qc7 41.Bd3 Qd8 42.Qf2 Nd7 43.Bc3 Nf6 44.Qg3 Nh5 45.Qg4 Nf6 46.Qf3 Qc7 47.Qg3 Nh5 48.Qe3 Qd8 49.Qf3 Qh4 50.Rg4 Qf6 51.Rf1 Qe7 52.Rg2 Nf6 53.Rb1 Rc8 54.Re1 Nd7 55.Rg3 Qf6 56.Qe3 Qh4 57.e5 dxe5
+- (1.97) Depth: 32/42 00:00:50 349mN, tb=208
40.Rxg7
+- (2.05 ++) Depth: 33/38 00:00:59 421mN, tb=1010
40.Rxg7
+- (2.12 ++) Depth: 33/57 00:00:59 421mN, tb=1010
40.Rxg7
+- (2.24 ++) Depth: 33/61 00:00:59 421mN, tb=1010
40.Rxg7
+- (2.40 ++) Depth: 33/61 00:00:59 422mN, tb=1024
40.Rxg7
+- (2.61 ++) Depth: 33/62 00:01:03 453mN, tb=4601
40.Rxg7 Rxg7 41.Rxg7 Kxg7 42.Qxh6+ Kg8 43.Bg5 Qf8 44.Qh4 Rxe4 45.Bxe4 Nxe4 46.Qxe4 f6 47.Bd2 Nd8 48.Kh2 Kf7 49.Kg2 Qg7+ 50.Kf2 Kf8 51.Bf4 Qd7 52.Ke3 Nf7 53.Qe6 Qd8 54.Bg3 Kg7 55.Bh4 Nh6 56.Ke2 Nf7 57.Kd3 Nh6 58.Bg3 Nf7 59.h4 Kf8 60.h5 Kg7 61.h6+ Nxh6
+- (2.63) Depth: 33/66 00:01:05 472mN, tb=6080
40.Rxg7 Rxg7
+- (2.55 --) Depth: 34/62 00:01:07 492mN, tb=7809
40.Rxg7
+- (2.63 ++) Depth: 34/62 00:01:08 500mN, tb=8536
40.Rxg7 Rxg7
+- (2.48 --) Depth: 34/62 00:01:10 517mN, tb=11737
40.Rxg7
+- (2.61 ++) Depth: 34/62 00:01:11 524mN, tb=12070

BTW now SF9 is better than Houdini6 in Arasan suite.

Apparently my engines are all cursed. Here's the very latest SF9-dev with 20 threads:

Code: Select all

info depth 35 seldepth 73 multipv 1 score cp 244 nodes 4464597235 nps 31843125 hashfull 738 tbhits 303698 time 140206 pv e3f4 a7a6 g2g7 g8g7 g1g7 h8g7 f4h6 g7g8 d2g5 e7f8 h6h4 e8e4 c2e4 f6e4 h4e4 f7f6 e4e6 g8g7 g5f4 f8f7 f4h6 g7g8 e6d6 c6e7 d6d7 f7c4 d7e8 g8h7 e8e7 h7h6 e7f6 h6h7 f6g6 h7h8 g6e8 h8g7 e8e5 g7f7 h1g1 c4a4 e5e6 f7f8 e6f6 f8e8 f6g6 e8d7 g6e6 d7c7 d4d5 a4d1 g1f2 d1d4 f2f3 d4c3 f3f4 c3d4 e6e4
info depth 36 currmove e3f4 currmovenumber 1
info depth 36 currmove g1e1 currmovenumber 2
info depth 36 currmove e4e5 currmovenumber 3
info depth 36 currmove c2b3 currmovenumber 4
info depth 36 currmove d4d5 currmovenumber 5
info depth 36 currmove g1f1 currmovenumber 6
info depth 36 currmove e3e2 currmovenumber 7
info depth 36 currmove e3d3 currmovenumber 8
info depth 36 currmove e3b3 currmovenumber 9
info depth 36 currmove h1h2 currmovenumber 10
info depth 36 currmove e3f3 currmovenumber 11
info depth 36 currmove h3h4 currmovenumber 12
info depth 36 currmove e3g3 currmovenumber 13
info depth 36 currmove d2b4 currmovenumber 14
info depth 36 currmove c2d3 currmovenumber 15
info depth 36 currmove e3c3 currmovenumber 16
info depth 36 currmove e3g5 currmovenumber 17
info depth 36 currmove g2f2 currmovenumber 18
info depth 36 currmove c2b1 currmovenumber 19
info depth 36 currmove g1b1 currmovenumber 20
info depth 36 currmove g2g4 currmovenumber 21
info depth 36 currmove g2g3 currmovenumber 22
info depth 36 currmove c2d1 currmovenumber 23
info depth 36 currmove a4a5 currmovenumber 24
info depth 36 currmove g1d1 currmovenumber 25
info depth 36 currmove g1c1 currmovenumber 26
info depth 36 currmove g2e2 currmovenumber 27
info depth 36 currmove g2g6 currmovenumber 28
info depth 36 currmove g2h2 currmovenumber 29
info depth 36 currmove d2a5 currmovenumber 30
info depth 36 currmove d2c1 currmovenumber 31
info depth 36 currmove e3f2 currmovenumber 32
info depth 36 currmove g2g5 currmovenumber 33
info depth 36 currmove d2e1 currmovenumber 34
info depth 36 currmove e3a3 currmovenumber 35
info depth 36 currmove c4c5 currmovenumber 36
info depth 36 currmove d2c3 currmovenumber 37
info depth 36 currmove g1a1 currmovenumber 38
info depth 36 currmove e3e1 currmovenumber 39
info depth 36 currmove e3h6 currmovenumber 40
info depth 36 currmove g2g7 currmovenumber 41
info depth 36 seldepth 73 multipv 1 score cp 252 lowerbound nodes 5466245203 nps 32088884 hashfull 820 tbhits 427785 time 170347 pv g2g7

[Jouni]

I get 2 solutions below minute in about 12 tries. In others no solution in 10 minutes.

[Paloma]

maybe you're using different hashtables.
is besides nondeterministic the most reason for different results.

[royb]

maybe you're using different hashtables.
is besides nondeterministic the most reason for different results.

I agree that hashtable sizes may be affecting the results seen. Many times that can be a factor!

[zullil]

maybe you're using different hashtables.
is besides nondeterministic the most reason for different results.

I agree that hashtable sizes may be affecting the results seen. Many times that can be a factor!

No, my engines are simply cursed. This time Cfish, with 20 threads, 32 GB hash and 6-man syzygy tables:

Code: Select all

info depth 34 seldepth 48 multipv 1 score cp 230 lowerbound nodes 5068080084 nps 35123533 hashfull 827 tbhits 36301 time 144293 pv e3f4
info depth 34 currmove e3f4 currmovenumber 1
info depth 34 currmove g1e1 currmovenumber 2
info depth 34 currmove c4c5 currmovenumber 3
info depth 34 currmove e4e5 currmovenumber 4
info depth 34 currmove g2g3 currmovenumber 5
info depth 34 currmove c2b1 currmovenumber 6
info depth 34 currmove g2h2 currmovenumber 7
info depth 34 currmove c2b3 currmovenumber 8
info depth 34 currmove c2d3 currmovenumber 9
info depth 34 currmove e3d3 currmovenumber 10
info depth 34 currmove d2c3 currmovenumber 11
info depth 34 currmove a4a5 currmovenumber 12
info depth 34 currmove g2g4 currmovenumber 13
info depth 34 currmove g2g5 currmovenumber 14
info depth 34 currmove e3g5 currmovenumber 15
info depth 34 currmove g2f2 currmovenumber 16
info depth 34 currmove e3f2 currmovenumber 17
info depth 34 currmove d4d5 currmovenumber 18
info depth 34 currmove d2e1 currmovenumber 19
info depth 34 currmove e3c3 currmovenumber 20
info depth 34 currmove h1h2 currmovenumber 21
info depth 34 currmove e3e2 currmovenumber 22
info depth 34 currmove e3b3 currmovenumber 23
info depth 34 currmove e3g3 currmovenumber 24
info depth 34 currmove e3f3 currmovenumber 25
info depth 34 currmove g1c1 currmovenumber 26
info depth 34 currmove g1d1 currmovenumber 27
info depth 34 currmove g2e2 currmovenumber 28
info depth 34 currmove g1b1 currmovenumber 29
info depth 34 currmove h3h4 currmovenumber 30
info depth 34 currmove g2g6 currmovenumber 31
info depth 34 currmove c2d1 currmovenumber 32
info depth 34 currmove g1f1 currmovenumber 33
info depth 34 currmove d2c1 currmovenumber 34
info depth 34 currmove d2a5 currmovenumber 35
info depth 34 currmove d2b4 currmovenumber 36
info depth 34 currmove g1a1 currmovenumber 37
info depth 34 currmove e3e1 currmovenumber 38
info depth 34 currmove e3a3 currmovenumber 39
info depth 34 currmove g2g7 currmovenumber 40
info depth 34 seldepth 59 multipv 1 score cp 246 lowerbound nodes 5888491625 nps 35300802 hashfull 876 tbhits 91565 time 166809 pv g2g7

[Vinvin]

3 runs with SF9, CPU @ 6*4GHz : 6m39s, 1m31s and 10m9s.

Code: Select all

FEN: 4r1rk/p3qpp1/1pnp1n1p/5P2/P1PPP3/4Q2P/2BB2R1/6RK w - - 0 40

Stockfish_9_x64_popcnt:
...
 37/60+	06:25	 3 562 520k	9 232k	+2,10	40.Qf4
 37/60+	06:39	 3 691 876k	9 251k	+2,40	40.Rxg7
 37/69+	06:56	 3 876 084k	9 302k	+2,78	40.Rxg7
 37/69	07:02	 3 939 375k	9 316k	+2,92	40.Rxg7 Rxg7 41.Rxg7 Kxg7 42.Qxh6+ Kg8 43.Bg5 Qf8 44.Qh4 Nxe4 45.Bxe4 Rxe4 46.Qxe4 f6 47.Bd2 Nd8 48.Kh2 Kg7 49.Bf4 Kh7 50.h4 Qf7 51.d5 Qf8 52.Qe2 Kg8 53.Kh3 Nf7 54.Qe6 Kg7 55.Kg3 Qd8 56.h5 Qf8 57.Kf3 Qh8 58.Kg4 Qf8 59.Kg3 a6 60.Qd7 Kh7 61.Kf2 Qg7 62.Qe6 Ng5 63.Qe3 Nf7 64.Qe7 Ne5 65.Qxd6 Nxc4 66.Qe6
 38/63+	07:20	 4 119 371k	9 360k	+2,99	40.Rxg7
 38/69	07:27	 4 192 325k	9 379k	+3,01	40.Rxg7 Rxg7 41.Rxg7 Kxg7 42.Qxh6+ Kg8 43.Bg5 Qf8 44.Qh4 Nxe4 45.Bxe4 Rxe4 46.Qxe4 f6 47.Bd2 Nd8 48.Kh2 Kg7 49.Bf4 Nf7 50.Qg2+ Kh8 51.Qe2 Qd8 52.h4 Kg7 53.h5 Kh8 54.Qe6 Kg7 55.Kg3 Qh8 56.Kg4 Qf8 57.Bd2 Nh6+ 58.Kf3 Nf7 59.Qd7 Kg8 60.Bf4 Qg7 61.Qe8+ Kh7 62.Kf2 a6 63.Qe7 Nh6 64.Qxg7+ Kxg7 65.Kf3 Nxf5 66.Ke4
 39/71+	07:53	 4 439 240k	9 382k	+3,09	40.Rxg7
 39/71+	08:02	 4 524 847k	9 385k	+3,16	40.Rxg7
 39/71	08:09	 4 597 501k	9 394k	+3,17	40.Rxg7 Rxg7 41.Rxg7 Kxg7 42.Qxh6+ Kg8 43.Bg5 Qf8 44.Qh4 Nxe4 45.Bxe4 Rxe4 46.Qxe4 f6 47.Bd2 Nd8 48.Kh2 Kh8 49.Bf4 Nf7 50.Qe2 Qd8 51.h4 Kg7 52.h5 Kh8 53.Qe6 Kg7 54.Kg3 Qf8 55.Kh4 Nh6 56.Qd7+ Nf7 57.Qxa7 Qe8 58.h6+ Kh7 59.Qb7 Qe1+ 60.Bg3 Qe8 61.Bxd6 Qe1+ 62.Bg3 Qe8 63.Bf4 Qe1+ 64.Kh3 Qf1+ 65.Qg2 Ng5+ 66.Bxg5 Qxf5+ 67.Kh4 fxg5+ 68.Qxg5 Qf2+ 69.Kh5 Qf3+ 70.Qg4 Qh1+ 71.Kg5 Qxh6+ 72.Kf5 Qf8+ 73.Ke4 Qe8+ 74.Kd5 Qxa4
 40/60	08:38	 4 914 033k	9 470k	+3,19	40.Rxg7 Rxg7 41.Rxg7 Kxg7 42.Qxh6+ Kg8 43.Bg5 Qf8 44.Qh4 Nxe4 45.Bxe4 Rxe4 46.Qxe4 f6 47.Bd2 Nd8 48.Kh2 Kh8 49.Bf4 Nf7 50.Qe2 Qd8 51.h4 Kg7 52.h5 Kh8 53.Qe6 Kg7 54.Kh3 Qf8 55.Kg3 Qh8 56.Kg4 Qf8 57.Kh4 Nh6 58.Qd7+ Nf7 59.Kg3 Kh8 60.Kf2 a6 61.Qe6 Kg7 62.Kg3 Qh8 63.Kg4 Qf8 64.Kh4 Nh6 65.Kg3 Kh7 66.Qd7+ Nf7 67.Kf3 Qg8 68.Kf2 Qg7 69.Qe8 Qg8
 41/61+	09:01	 5 171 105k	9 552k	+3,27	40.Rxg7
 41/61-	09:02	 5 185 428k	9 556k	+3,12	40.Rxg7 Rxg7
 41/71+	09:12	 5 312 978k	9 611k	+3,23	40.Rxg7
 41/71+	09:57	 5 830 428k	9 754k	+3,90	40.Rxg7
 41/72	10:18	 6 079 947k	9 829k	+4,01	40.Rxg7 Rxg7 41.Rxg7 Kxg7 42.Qxh6+ Kg8 43.Bg5 Qf8 44.Qh4 Nxe4 45.Bxe4 Rxe4 46.Qxe4 f6 47.Qxc6 fxg5 48.Qd5+ Kg7 49.Kg2 Qe7 50.Qe6 Qf6 51.Qe4 a6 52.Kf3 Kf8 53.Qa8+ Kg7 54.Qb7+ Kh6 55.Qe4 Kg7 56.Kg4 Kf8 57.Qa8+ Ke7 58.Qb7+ Ke8 59.Qc8+ Kf7 60.Qc7+ Kg8 61.Qxb6 Qe7 62.c5 Qe4+ 63.Kxg5 Qe7+ 64.Kf4 Qh4+ 65.Ke3 Qxh3+ 66.Kd2 Qxf5 67.Qxd6 Qf2+ 68.Kd3 Qf3+ 69.Kc4 Qf1+ 70.Kd5 Qf3+ 71.Ke5 Qe3+ 72.Kf6
 42/51+	10:55	 6 515 995k	9 944k	+4,08	40.Rxg7
 42/59+	11:05	 6 631 990k	9 968k	+4,16	40.Rxg7
 42/75+	12:02	 7 319 928k	10 124k	+4,43	40.Rxg7
 42/75	13:14	 8 160 358k	10 265k	+4,50	40.Rxg7 Rxg7 41.Rxg7 Kxg7 42.Qxh6+ Kg8 43.Bg5 Qf8 44.Qh4 Nxe4 45.Bxe4 Rxe4 46.Qxe4 f6 47.Qxc6 fxg5 48.Qd5+ Qf7 49.Qe6 Kg7 50.Kg2 Qf6 51.Qe4 a6 52.Kf3 Kf8 53.Qa8+ Kg7 54.Qb7+ Kh6 55.Qe4 Kg7 56.Kg4 Kf8 57.Qa8+ Kg7 58.Qb7+ Kg8 59.Qxb6 Qe7 60.c5 Qe4+ 61.Kxg5 Qe7+ 62.Kf4 Qh4+ 63.Ke3 Qg3+ 64.Ke4 Qg2+ 65.Kd3 Qf1+ 66.Kc3 Qc1+ 67.Kb3 dxc5 68.Qd8+ Kf7 69.Qd5+ Kg7 70.Qe5+ Kf7 71.dxc5 Qb1+ 72.Kc4 Qa2+ 73.Kb4 Qd2+ 74.Qc3 a5+ 75.Kb3 Qd7
 43/75	14:23	 8 923 216k	10 329k	+4,50	40.Rxg7 Rxg7 41.Rxg7 Kxg7 42.Qxh6+ Kg8 43.Bg5 Qf8 44.Qh4 Nxe4 45.Bxe4 Rxe4 46.Qxe4 f6 47.Qxc6 fxg5 48.Qd5+ Qf7 49.Qe6 Kg7 50.Kg2 Qf6 51.Qe4 a6 52.Kf3 Kf8 53.Qa8+ Kg7 54.Qb7+ Kh6 55.Qe4 Kg7 56.Kg4 Kf8 57.Qa8+ Kg7 58.Qb7+ Kg8 59.Qxb6 Qe7 60.c5 Qe4+ 61.Kxg5 Qe7+ 62.Kf4 Qh4+ 63.Ke3 Qg3+ 64.Ke4 Qg2+ 65.Kd3 Qf1+ 66.Kc3 Qc1+ 67.Kb3 dxc5 68.Qd8+ Kf7 69.Qd5+ Kg7 70.Qe5+ Kf7 71.dxc5 Qb1+ 72.Kc4 Qa2+ 73.Kb4 Qd2+ 74.Qc3 a5+ 75.Kb3 Qd7
 44/73	14:23	 8 923 216k	10 329k	+4,66	40.Rxg7 Rxg7 41.Rxg7 Kxg7 42.Qxh6+ Kg8 43.Bg5 Qf8 44.Qh4 Nxe4 45.Bxe4 Rxe4 46.Qxe4 Qg7 47.h4 Na5 48.Qd5 Kh7 49.Kh2 f6 50.Bf4 a6 51.Bxd6 Qg8 52.Qe6 Qg4 53.Qf7+ Qg7 54.Qh5+ Qh6 55.Qxh6+ Kxh6 56.c5 bxc5 57.Bxc5 Kg7 58.Kg3 Nb3 59.Bb6 Nd2 60.d5 Ne4+ 61.Kg4 Nd6 62.Bc5 Ne4 63.Bd4 Nd6 64.Kf4 Nc4 65.Bc5 Nb2 66.Ke4 Kf7 67.Bd4 Nc4 68.h5 Nd6+ 69.Kf4 Kg7 70.h6+ Kxh6 71.Bxf6 Nc4


Stockfish_9_x64_popcnt:
...
 32/45	01:12	 663 483k	9 187k	+2,12	40.Re1 Nd7 41.Qf4 a5 42.Bc3 Nb4 43.Bb1 Rc8 44.Reg1 Nc6 45.Qg3 Qf6 46.Rd1 Qe7 47.Re1 Rce8 48.Rf1 Nf6 49.Rfg1 Qc7 50.Re1 Nd7 51.Qf3 Nf6 52.Qe3 Nh7 53.Qg3 Rc8 54.Reg1 Rce8 55.Qf4 Qe7 56.Qf2 Nf6 57.Re1 Qc7
 33/44-	01:26	 794 121k	9 166k	+2,05	40.Re1 Nh7
 33/44+	01:31	 842 044k	9 171k	+2,12	40.Rxg7
 33/44+	01:34	 863 943k	9 176k	+2,40	40.Rxg7
 33/65	01:38	 909 405k	9 194k	+2,33	40.Rxg7 Rxg7 41.Rxg7 Kxg7 42.Qxh6+ Kg8 43.Bg5 Qf8 44.Qh4 Nxe4 45.Bxe4 Rxe4 46.Qxe4 f6 47.Bf4 Na5 48.d5 Kh7 49.Bd2 Kg7 50.Bc3 Kf7 51.Bxa5 bxa5 52.Qe6+ Kg7 53.h4 Qd8 54.Kg2 Kf8 55.Kg3 Kg7 56.Kf4 Qc7 57.c5 dxc5+ 58.d6 Qd8 59.h5 c4 60.Qe7+ Qxe7 61.dxe7
 34/56+	01:44	 958 937k	9 218k	+2,41	40.Rxg7
 34/56+	01:44	 967 621k	9 224k	+2,48	40.Rxg7
 34/70+	01:57	 1 092 379k	9 325k	+2,97	40.Rxg7
 34/70	02:00	 1 129 283k	9 351k	+2,95	40.Rxg7 Rxg7 41.Rxg7 Kxg7 42.Qxh6+ Kg8 43.Bg5 Qf8 44.Qh4 Nxe4 45.Bxe4 Rxe4 46.Qxe4 f6 47.Bf4 Na5 48.Qe6+ Qf7 49.d5 Nb7 50.Kh2 Nc5 51.Qc8+ Kg7 52.Bxd6 Ne4 53.Qb8 Nxd6 54.Qxd6 Qe8 55.Qe6 Qxa4 56.Qe7+ Kg8 57.Qxf6 Qxc4 58.Qe6+ Kf8 59.d6 Qxe6 60.fxe6 Ke8 61.Kg3 b5 62.Kf4 a5 63.Ke5
 35/67-	02:05	 1 181 288k	9 397k	+2,87	40.Rxg7 Rxg7
 35/67+	02:09	 1 223 568k	9 435k	+2,95	40.Rxg7
 35/67+	02:10	 1 236 114k	9 447k	+3,06	40.Rxg7
 35/67-	02:13	 1 262 836k	9 479k	+2,80	40.Rxg7 Rxg7
 35/67	02:13	 1 267 466k	9 484k	+2,85	40.Rxg7 Rxg7 41.Rxg7 Kxg7 42.Qxh6+ Kg8 43.Bg5 Qf8 44.Qh4 Nxe4 45.Bxe4 Rxe4 46.Qxe4 f6 47.Bf4 Nd8 48.h4 Kh7 49.Kh2 Qf7 50.Bxd6 Qxc4 51.Be7 Qa2+ 52.Kh1 Qa1+ 53.Kg2 Qa2+ 54.Kf3 Qa1 55.Bxf6 Nf7 56.Kf4 Qc1+ 57.Qe3 Qc6 58.Bg5 Qxa4 59.Qe4 Qc4 60.f6+ Kh8 61.Kg3 Qb3+ 62.Kg2 Qc4 63.Bd2 Qa2 64.Kf3 Nd6 65.Qe5 Kh7 66.Qh5+ Kg8 67.Bc3
 36/62+	02:21	 1 351 926k	9 587k	+2,93	40.Rxg7
 36/65+	02:23	 1 378 994k	9 620k	+3,00	40.Rxg7
 36/74+	02:25	 1 404 765k	9 653k	+3,12	40.Rxg7
 36/74	02:26	 1 417 890k	9 672k	+3,13	40.Rxg7 Rxg7 41.Rxg7 Kxg7 42.Qxh6+ Kg8 43.Bg5 Qf8 44.Qh4 Nxe4 45.Bxe4 Rxe4 46.Qxe4 f6 47.Bf4 Na5 48.Qe6+ Qf7 49.d5 Nb7 50.Kh2 Nc5 51.Qc8+ Kg7 52.Bxd6 Ne4 53.Bb4 a5 54.Ba3 Ng5 55.Kg2 Kh7 56.Qf8 Qh5 57.Qe7+ Kg8 58.Qe3 Nf7 59.Qe4 Ng5 60.Qg4 Qxg4+ 61.hxg4 Kf7 62.c5 bxc5 63.Bxc5 Ne4 64.Bb6 Nc3 65.Bxa5 Nxa4 66.Kf3 Nc5 67.Bb4 Nd7 68.Ke4
 37/71+	02:39	 1 572 595k	9 856k	+3,20	40.Rxg7
 37/71	02:44	 1 630 825k	9 924k	+3,25	40.Rxg7 Rxg7 41.Rxg7 Kxg7 42.Qxh6+ Kg8 43.Bg5 Qf8 44.Qh4 Nxe4 45.Bxe4 Rxe4 46.Qxe4 f6 47.Bf4 Na5 48.Qe6+ Qf7 49.d5 Nb7 50.Kh2 Nc5 51.Qc8+ Kg7 52.Bxd6 Ne4 53.Bb4 a5 54.Ba3 Ng5 55.Kg2 Qh5 56.Qf8+ Kh7 57.Qe7+ Kg8 58.Qe3 Nf7 59.Qe4 Kg7 60.Qg4+ Qxg4+ 61.hxg4 Ne5 62.d6 Kf7 63.Bb2 Nxc4 64.d7 Ke7 65.d8Q+ Kxd8 66.Bxf6+ Ke8 67.Bd4 Kf7 68.g5 Ke7 69.Kf3
 38/71+	02:53	 1 738 617k	10 038k	+3,33	40.Rxg7
 38/71	02:55	 1 760 450k	10 057k	+3,33	40.Rxg7 Rxg7 41.Rxg7 Kxg7 42.Qxh6+ Kg8 43.Bg5 Qf8 44.Qh4 Nxe4 45.Bxe4 Rxe4 46.Qxe4 f6 47.Bf4 Na5 48.Qe6+ Qf7 49.d5 Nb7 50.Kh2 Nc5 51.Qc8+ Kg7 52.Bxd6 Ne4 53.Bb4 Ng5 54.Kg2 Qh5 55.Qf8+ Kh7 56.Qe7+ Nf7 57.Kh2 Kg7 58.Qf8+ Kh7 59.Qe8 Kh6 60.Qe4 Qg5 61.Qg4 Ne5 62.Bf8+ Kh7 63.Qxg5 fxg5 64.c5 Kg8 65.cxb6 axb6 66.Be7 Kf7 67.d6 Ke8 68.Kg3
 39/51+	03:04	 1 873 606k	10 160k	+3,40	40.Rxg7
 39/59+	03:11	 1 955 682k	10 233k	+3,48	40.Rxg7
 39/61	03:16	 2 025 425k	10 283k	+3,48	40.Rxg7 Rxg7 41.Rxg7 Kxg7 42.Qxh6+ Kg8 43.Bg5 Qf8 44.Qh4 Nxe4 45.Bxe4 Rxe4 46.Qxe4 f6 47.Bf4 Na5 48.Qe6+ Qf7 49.d5 Nb7 50.Kh2 Nc5 51.Qc8+ Kg7 52.Bxd6 Ne4 53.Bb4 Ng5 54.Kg2 a5 55.Ba3 Qh5 56.Qf8+ Kh7 57.Qe7+ Kg8 58.Qe3 Nf7 59.Qe4 Kg7 60.Qg4+ Qxg4+ 61.hxg4 Ne5 62.d6 Kf7 63.Bb2 Nxc4 64.d7 Ke7 65.d8Q+ Kxd8 66.Bxf6+ Kd7 67.Kf3 b5 68.axb5 Nd6 69.b6 a4
 40/59-	03:25	 2 122 893k	10 349k	+3,41	40.Rxg7 Rxg7
 40/75+	03:27	 2 147 914k	10 361k	+3,48	40.Rxg7


Stockfish_9_x64_popcnt:
...
 38/71+	08:29	 4 868 712k	9 563k	+2,41	40.Qf4
 38/71+	10:09	 5 938 689k	9 747k	+2,57	40.Rxg7
 38/71+	10:10	 5 953 431k	9 752k	+3,07	40.Rxg7
 38/81	10:27	 6 166 275k	9 831k	+3,42	40.Rxg7 Rxg7 41.Rxg7 Kxg7 42.Qxh6+ Kg8 43.Bg5 Qf8 44.Qh4 Rxe4 45.Bxe4 Nxe4 46.Qxe4 f6 47.Qe6+ Kg7 48.Bf4 Nd8 49.Qe2 Kf7 50.Kg2 Qg7+ 51.Kh2 Qf8 52.Qg2 Ke8 53.Qd5 Qe7 54.Bxd6 Qe2+ 55.Kg3 Qe3+ 56.Kg4 Nf7 57.Qc6+ Kd8 58.Bc7+ Ke7 59.Qe6+ Qxe6 60.fxe6 Kxe6 61.Bb8 Kd7 62.Bxa7 Kc6 63.c5 bxc5 64.Bxc5 Ng5 65.h4 Ne6 66.h5 f5+ 67.Kxf5 Nxc5
 39/67-	10:38	 6 322 730k	9 897k	+3,34	40.Rxg7 Rxg7
 39/67-	10:39	 6 333 552k	9 901k	+3,27	40.Rxg7 Rxg7
 39/67-	10:40	 6 349 781k	9 907k	+3,15	40.Rxg7 Rxg7
 39/67+	10:44	 6 400 472k	9 930k	+3,25	40.Rxg7
 39/73+	11:01	 6 617 956k	10 007k	+3,75	40.Rxg7
 39/74	11:14	 6 782 986k	10 054k	+3,84	40.Rxg7 Rxg7 41.Rxg7 Kxg7 42.Qxh6+ Kg8 43.Bg5 Qf8 44.Qh4 Rxe4 45.Bxe4 Nxe4 46.Qxe4 f6 47.Qe6+ Kg7 48.Bf4 Nd8 49.Qe2 Kf7 50.Kg2 Nb7 51.Qe6+ Kg7 52.h4 Nd8 53.Qe2 Kh7 54.Kf2 Kg8 55.Qf3 Kh7 56.Qh5+ Kg8 57.Qg6+ Kh8 58.Qh6+ Qxh6 59.Bxh6 Kg8 60.Bf4 Nb7 61.Ke3 Kf7 62.Kd3 Ke8 63.Ke4 Ke7 64.h5 Kf7
 40/69-	11:36	 7 067 603k	10 141k	+3,76	40.Rxg7 Rxg7
 40/69-	11:37	 7 074 700k	10 143k	+3,69	40.Rxg7 Rxg7
 40/71-	11:41	 7 127 632k	10 160k	+3,42	40.Rxg7 Rxg7
 40/75+	11:46	 7 197 070k	10 182k	+3,54	40.Rxg7
 40/75	11:49	 7 228 574k	10 192k	+3,54	40.Rxg7 Rxg7 41.Rxg7 Kxg7 42.Qxh6+ Kg8 43.Bg5 Qf8 44.Qh4 Nxe4 45.Bxe4 Rxe4 46.Qxe4 f6 47.Qe6+ Kg7 48.Bf4 Nd8 49.Qe3 Kh8 50.Qe2 Nc6 51.Kh2 Kh7 52.Qe4 Nd8 53.h4 Qf7 54.Bxd6 Qxc4 55.Be7 Qa2+ 56.Kh1 Nf7 57.Bxf6 Qa1+ 58.Kh2 Qa2+ 59.Kg3 Qa3+ 60.Kf4 Qc1+ 61.Qe3 Qf1+ 62.Qf3 Qc1+ 63.Kg4 Nh6+ 64.Kh5 Qc8 65.Qe4 Qxf5+ 66.Qxf5+ Nxf5 67.d5
 41/66-	12:02	 7 397 394k	10 244k	+3,47	40.Rxg7 Rxg7
 41/66-	12:07	 7 454 961k	10 245k	+3,39	40.Rxg7 Rxg7
 41/66+	12:11	 7 499 776k	10 258k	+3,47	40.Rxg7
 41/66+	12:21	 7 631 579k	10 294k	+3,84	40.Rxg7
 41/66	12:26	 7 694 576k	10 305k	+3,91	40.Rxg7 Rxg7 41.Rxg7 Kxg7 42.Qxh6+ Kg8 43.Bg5 Qf8 44.Qh4 Rxe4 45.Bxe4 Nxe4 46.Qxe4 f6 47.Bf4 Nd8 48.Kh2 Nf7 49.Qg2+ Kh8 50.Qe2 Nd8 51.h4 Nc6 52.Kh3 Nd8 53.Kg2 Nc6 54.Kh2 Nd8 55.Kh3 a5 56.Qh5+ Kg8 57.Qg4+ Kh8 58.Qe2 Kh7 59.Qg2 Qe8 60.Bxd6 Ne6 61.d5 Nc5 62.Bxc5 bxc5 63.Qg6+ Qxg6 64.fxg6+ Kxg6 65.Kg4 Kf7 66.h5 Ke8

[Jouni]

I tried to change contempt = 0 for a change. Yes faster solution.

Analysis by Stockfish 9 64 BMI2:
...
40.Qf4 a6 41.Bc3 a5 42.Bb1 Nd7 43.Re1 Qf6 44.Kh2 Qe7 45.Rg4 Qf6 46.Rgg1 Qe7 47.Rg2 Qf6 48.Kh1 Qe7 49.Qg3 Qf6 50.Bc2 Qe7 51.Reg1 Nb4 52.Bb1 Qf6 53.Qf4
+/- (1.55) Depth: 26/27 00:00:05 32936kN
40.Rxg7
+- (1.62 ++) Depth: 27/32 00:00:06 42669kN, tb=33
40.Rxg7
+- (1.70 ++) Depth: 27/32 00:00:06 44173kN, tb=36
40.Rxg7
+- (1.81 ++) Depth: 27/32 00:00:06 45567kN, tb=36
40.Rxg7
+- (1.97 ++) Depth: 27/32 00:00:07 47206kN, tb=36
40.Rxg7
+- (2.19 ++) Depth: 27/32 00:00:07 48681kN, tb=38
40.Rxg7 Rxg7 41.Rxg7 Kxg7 42.Qxh6+ Kg8 43.Bg5 Qf8 44.Qh4 Rxe4 45.Bxe4 Nxe4 46.Qxe4 f6 47.Bf4 Na5 48.d5 Kg7 49.Kh2 Nb7 50.Qe3 Kf7 51.Qe6+ Kg7 52.Qd7+ Qf7 53.Bh6+ Kg8 54.Qe6 Qxe6 55.dxe6 Na5 56.Kg2 Nxc4 57.Kf3 d5 58.e7
+- (2.29) Depth: 27/46 00:00:08 53758kN, tb=79
40.Rxg7
+- (2.37 ++) Depth: 28/50 00:00:08 58164kN, tb=134
40.Rxg7
+- (2.44 ++) Depth: 28/51 00:00:09 60357kN, tb=147
40.Rxg7 Rxg7
+- (2.22 --) Depth: 28/51 00:00:09 65228kN, tb=182
40.Rxg7
+- (2.38 ++) Depth: 28/58 00:00:10 70947kN, tb=348
40.Rxg7 Rxg7 41.Rxg7 Kxg7 42.Qxh6+ Kg8 43.Bg5 Qf8 44.Qh4 Rxe4 45.Bxe4 Nxe4 46.Qxe4 f6 47.Bf4 Na5 48.d5 Kh7 49.Kg2 Nb3 50.Qe6 Nd4 51.Qxd6 Qxd6 52.Bxd6 Nxf5 53.Bf4 Kg6 54.Kf3 Nd4+ 55.Ke3 Nb3 56.Bd6 Kf5 57.Bb8 Nc5 58.Bxa7 Nxa4
+- (2.15) Depth: 28/58 00:00:10 74576kN, tb=556
40.Rxg7
+- (2.23 ++) Depth: 29/49 00:00:11 79273kN, tb=802
40.Rxg7
+- (2.30 ++) Depth: 29/49 00:00:11 79852kN, tb=826
40.Rxg7
+- (2.42 ++) Depth: 29/52 00:00:11 81900kN, tb=881
40.Rxg7 Rxg7 41.Rxg7 Kxg7 42.Qxh6+ Kg8 43.Bg5 Qf8 44.Qh4 Rxe4 45.Bxe4 Nxe4 46.Qxe4 f6 47.Bf4 Na5 48.d5 Kg7 49.Kg2 Kh7 50.h4 Nb3 51.Qe6 Nd4 52.Qxd6 Qxd6 53.Bxd6 Nxf5 54.Bb8 Nxh4+ 55.Kg3 Ng6 56.Bxa7 Ne5 57.Bxb6 Nxc4 58.Bc5 Ne5 59.Bd4
+- (2.31) Depth: 29/52 00:00:12 82976kN, tb=896
40.Rxg7
+- (2.39 ++) Depth: 30/46 00:00:13 90539kN, tb=1284

4 cores and 2 GB hash + syzygy.

[Eelco de Groot]

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "?"]
[Black "?"]
[Result "*"]
[Analysis "asmFishW TA"]
[AnalysisTime "4"]
[FEN "4r1rk/p3qpp1/1pnp1n1p/5P2/P1PPP3/4Q2P/2BB2R1/6RK w - - 0 40"]
[SetUp "1"]

40. Rxg7 Rxg7 41. Rxg7 Kxg7 42. Qxh6+ Kg8 43. Bg5 Qf8 44. Qh4 Nxe4 45. Bxe4
Rxe4 46. Qxe4 Qg7 47. h4 Na5 48. Qd5 Nb3 49. c5 dxc5 50. f6 Qg6 51. Qxb3 Qe4+
52. Kh2 Qxd4 53. Qf3 Qxa4 54. Kg3 Qd4 55. Be3 Qd3 56. h5 Kh8 57. Qf4 Qh7 58.
Kg4 a5 59. Kh4 Qg8 60. Kh3 Qf8 61. Qg4 Qg8 62. Qf5 Qa8 63. Kg3 {(0:00:04)
36944kN}{[%eval 349,33,asmFishW TA][%meval 4s|TB:679]} *

Please search again, this time with a clear hash.

Even for asmFish, 4 seconds is not possible (at least with anything resembling default settings).

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "?"]
[Black "?"]
[Result "*"]
[Analysis "asmFishW TA"]
[AnalysisTime "3"]
[FEN "4r1rk/p3qpp1/1pnp1n1p/5P2/P1PPP3/4Q2P/2BB2R1/6RK w - - 0 40"]
[SetUp "1"]

40. Rxg7 Rxg7 41. Rxg7 Kxg7 42. Qxh6+ Kg8 43. Bg5 Qf8 44. Qh4 Nxe4 45. Bxe4
Rxe4 46. Qxe4 Qg7 47. h4 Na5 48. Qd5 Kh8 49. Kh2 Kg8 50. Kh3 Kh7 51. Qxd6 Nxc4
52. Qd8 Na5 53. Qd5 f6 54. Be3 Qb7 55. Qe6 Nc4 56. Qxc4 Qf3+ 57. Kh2 Qxe3 58.
Qf7+ Kh8 59. Qxf6+ Kh7 60. Qf7+ Kh8 61. Qh5+ Kg8 62. Qg5+ Qxg5 63. hxg5 Kf7
64. Kg3 a6 65. d5 b5 {(0:00:03) 33803kN}{[%eval 323,28,asmFishW TA][%meval
3s|TB:599]} *

When your engine finds Rxg7 before you start the search, please let us know. 3 seconds is much too slow.

3 seconds is doable I think. Om is for real. What is TA? Here old Kaissa the one based based on Stockfish 2017-09-22 code. No contempt.
The other Kaissas are a bit, or more than a bit weaker I think. I'm testing them but Stock is changing faster than I can copy/paste Now I'm trying again with the latest Stockfish.

[D]4r1rk/p3qpp1/1pnp1n1p/5P2/P1PPP3/4Q2P/2BB2R1/6RK w - -

Engine: Kaissa HT 20170902 Stockfish based (i7 6700, 3 + 4 threads, 512 MB)
by T. Romstad, M. Costalba, J. Kiiski, G. Linscott

18/35 0:01 +1.63 40.Re1 Na5 41.Bd3 Rc8 42.e5 dxe5
43.dxe5 Nxc4 44.Bxc4 Rxc4 45.exf6 Qxf6
46.Qf3 Rc5 47.Rf1 Qc6 48.Qxc6 Rxc6
49.Re1 Rc5 50.Re7 Rxf5 51.Rxa7 Rf3
52.Kh2 f6 53.Rb7 (14.057.053) 9789

19/37 0:01 +1.69 40.Re1 Na5 41.Bd3 Rc8 42.e5 dxe5
43.dxe5 Nxc4 44.Bxc4 Rxc4 45.exf6 Qxf6
46.Qf3 a6 47.Reg1 Qc6 48.Qxc6 Rxc6
49.Re1 Rc5 50.Rf2 Rc4 51.Rf4 Rgc8
52.Rxc4 Rxc4 53.Rb1 (14.861.047) 9828

20/32 0:01 +1.69 40.Re1 Na5 41.Bd3 Rc8 42.e5 dxe5
43.dxe5 Nxc4 44.Bxc4 Rxc4 45.exf6 Qxf6
46.Qf3 Rc5 47.Rf1 a6 48.Be3 Rc3
49.Qe4 b5 50.axb5 axb5 51.Rc1 Rxc1+
52.Bxc1 Qd6 53.f6 (15.590.883) 9836

21/45 0:02 +2.40 40.Rxg7 Rxg7 41.Rxg7 Kxg7 42.Qxh6+ Kg8
43.Bg5 Qf8 44.Qh4 Nxe4 45.Bxe4 Rxe4
46.Qxe4 Qg7 47.h4 f6 48.Qe8+ Kh7
49.Qh5+ Kg8 50.Bf4 Qf7 51.Qg4+ Qg7
52.Qe2 Nxd4 53.Qe4 (27.675.894) 10435

22/38 0:03 +2.66++ 40.Rxg7 (33.129.575) 10714

22/38 0:03 +2.82++ 40.Rxg7 (34.509.417) 10787

22/45 0:03 +3.00 40.Rxg7 Rxg7 41.Rxg7 Kxg7 42.Qxh6+ Kg8
43.Bg5 Qf8 44.Qh4 Nxe4 45.Bxe4 Rxe4
46.Qxe4 Qg7 47.h4 f6 48.Qxc6 fxg5
49.Qe8+ Kh7 50.Qh5+ Qh6 51.Qf7+ Kh8
52.Qe8+ Kg7 53.Qe7+ (38.336.055) 10940

23/42 0:04 +2.92-- 40.Rxg7 Rxg7 (47.571.547) 11246

23/42 0:04 +2.85-- 40.Rxg7 Rxg7 (47.695.058) 11248

23/42 0:04 +2.73-- 40.Rxg7 Rxg7 (47.902.838) 11247

23/42 0:04 +2.57-- 40.Rxg7 Rxg7 (48.066.786) 11246

23/42 0:04 +2.36-- 40.Rxg7 Rxg7 (48.427.606) 11254

23/42 0:04 +2.12 40.Rxg7 Rxg7 41.Rxg7 Kxg7 42.Qxh6+ Kg8
43.Bg5 Qf8 44.Qh4 Nxe4 45.Bxe4 Rxe4
46.Qxe4 f6 47.Bf4 Na5 48.d5 Nb7
49.Qe2 Nc5 50.Kh2 Kh7 51.h4 Nxa4
52.Qh5+ Kg8 53.Qg6+ (49.337.936) 11269

24/41 0:04 +2.20++ 40.Rxg7 (51.128.221) 11311

24/46 0:04 +2.27++ 40.Rxg7 (57.050.698) 11414

24/46 0:05 +2.39++ 40.Rxg7 (57.383.098) 11419

24/46 0:05 +2.55++ 40.Rxg7 (61.112.027) 11485

24/48 0:06 +2.31 40.Rxg7 Rxg7 41.Rxg7 Kxg7 42.Qxh6+ Kg8
43.Bg5 Qf8 44.Qh4 Nxe4 45.Bxe4 Rxe4
46.Qxe4 f6 47.Bd2 Nd8 48.h4 Qf7
49.Kh2 Qh5 50.Kg3 Kf8 51.Qf3 Qf7
52.Bf4 Qe7 53.h5 (79.831.770) 11669

25/49 0:07 +2.38++ 40.Rxg7 (85.355.698) 11686

25/49 0:07 +2.39 40.Rxg7 Rxg7 41.Rxg7 Kxg7 42.Qxh6+ Kg8
43.Bg5 Qf8 44.Qh4 Nxe4 45.Bxe4 Rxe4
46.Qxe4 f6 47.Bf4 Na5 48.d5 Nb7
49.Qe6+ Kh7 50.Kg2 Nc5 51.Qxd6 Qg7+
52.Kh2 Nd3 53.Bg3 (89.012.776) 11723

26/46 0:09 +2.32-- 40.Rxg7 Rxg7 (118.733.282) 11969

26/46 0:10 +2.39++ 40.Rxg7 (125.353.026) 11965

26/46 0:10 +2.50++ 40.Rxg7 (127.291.031) 11953

26/56 0:11 +2.66++ 40.Rxg7 (136.972.918) 11995

26/56 0:12 +2.67 40.Rxg7 Rxg7 41.Rxg7 Kxg7 42.Qxh6+ Kg8
43.Bg5 Qf8 44.Qh4 Nxe4 45.Bxe4 Rxe4
46.Qxe4 f6 47.Bf4 Na5 48.d5 Nb7
49.Qe6+ Kg7 50.Qd7+ Qf7 51.Bh6+ Kg8
52.Qc8+ Kh7 53.Bf8 (145.578.194) 12031

27/51 0:13 +2.70 40.Rxg7 Rxg7 41.Rxg7 Kxg7 42.Qxh6+ Kg8
43.Bg5 Qf8 44.Qh4 Nxe4 45.Bxe4 Rxe4
46.Qxe4 f6 47.Bf4 Na5 48.d5 Nb7
49.Qe6+ Kg7 50.Qd7+ Qf7 51.Bh6+ Kg8
52.Qc8+ Kh7 53.Bf8 (161.826.016) 12074

28/68 0:13 +2.62-- 40.Rxg7 Rxg7 (167.465.940) 12080

28/68 0:13 +2.55-- 40.Rxg7 Rxg7 (168.975.068) 12076

28/68 0:14 +2.63++ 40.Rxg7 (169.516.469) 12072

28/68 0:14 +2.43-- 40.Rxg7 Rxg7 (172.436.490) 12057

28/68 0:14 +2.61++ 40.Rxg7 (175.875.011) 12060

28/68 0:18 +2.77 40.Rxg7 Rxg7 41.Rxg7 Kxg7 42.Qxh6+ Kg8
43.Bg5 Qf8 44.Qh4 Nxe4 45.Bxe4 Rxe4
46.Qxe4 f6 47.Bd2 Nd8 48.Bf4 Nf7
49.Kh2 Ng5 50.Qe3 Qh6 51.Bxd6 Qh5
52.Bf4 Nf7 53.Qe8+ (230.060.060) 12222

29/68 0:19 +2.77 40.Rxg7 Rxg7 41.Rxg7 Kxg7 42.Qxh6+ Kg8
43.Bg5 Qf8 44.Qh4 Nxe4 45.Bxe4 Rxe4
46.Qxe4 f6 47.Bd2 Nd8 48.Bf4 Nf7
49.Kh2 Ng5 50.Qe3 Qh6 51.Bxd6 Qh5
52.Bf4 Nf7 53.Qe8+ (240.993.040) 12254

best move: Rg2xg7 time: 0:19.812 min n/s: 12.254.921 nodes: 240.993.040

[Event "EU/C2016/sf-01"]
[Site "ICCF"]
[Date "2016.09.20"]
[Round "?"]
[White "Tienhoven, Richard M. van"]
[Black "Baumgartner, Ulrich"]
[Result "1-0"]
[ECO "A20"]
[WhiteElo "2394"]
[BlackElo "2381"]
[PlyCount "103"]
[EventDate "2016.??.??"]

1. c4 e5 2. g3 Nf6 3. Bg2 h6 4. Nc3 Bb4 5. Nf3 Bxc3 6. bxc3 e4 7. Nd4 O-O 8.

O-O d6 9. f3 c5 10. Nc2 exf3 11. Rxf3 Nc6 12. d3 Ne5 13. Rf2 Rb8 14. h3 Be6 15.

a4 b6 16. Qf1 Nh7 17. g4 Re8 18. Ne3 Qd7 19. Nf5 Bxf5 20. gxf5 Nf6 21. e4 Kh7

22. Bf4 Rbc8 23. Bh2 Qe7 24. Qe2 Nfd7 25. Kh1 Qf6 26. Rg1 Rg8 27. Bf1 Qe7 28.

d4 Nc6 29. Qe3 Kh8 30. Bf4 Kh7 31. Rd2 Rce8 32. Bd3 Nf6 33. Rdg2 Qd8 34. Bc2

Qe7 35. Bg5 Qd8 36. Bh4 Qd7 37. Be1 cxd4 38. cxd4 Qe7 39. Bd2 Kh8 40. Rxg7 Rxg7

41. Rxg7 Kxg7 42. Qxh6+ Kg8 43. Bg5 Qf8 44. Qh4 Rxe4 45. Bxe4 Nxe4 46. Qxe4 f6

47. Qxc6 fxg5 48. Qd5+ Qf7 49. Qe6 Kg7 50. Kg2 Qf6 51. Qe4 Qf7 52. Kf3 1-0

[Robert Flesher]

Zappa Mexico II gets this instantly with default settings.