[Event "?"]zullil wrote:Interesting that your search didn't get "hung up" on Qf4. See if you can reproduce your success.Jouni wrote: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.
[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]}) *