nice correspondence move

[jdart]

[D] 4r1rk/p3qpp1/1pnp1n1p/5P2/P1PPP3/4Q2P/2BB2R1/6RK w - - 0 40

bm Rxg7. Houdini 6 gets this, but it takes a little while.

The game:

[pgn]
[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
[/pgn]

[zullil]

[D] 4r1rk/p3qpp1/1pnp1n1p/5P2/P1PPP3/4Q2P/2BB2R1/6RK w - - 0 40

bm Rxg7. Houdini 6 gets this, but it takes a little while.

I guess because the less spectacular second-best move is already strong:

Code: Select all

info depth 31 seldepth 61 multipv 1 score cp 285 nodes 4373253196 nps 25199970 hashfull 961 tbhits 0 time 173542 pv g2g7 g8g7 g1g7 h8g7 e3h6 g7g8 d2g5 e7f8 h6h4 f6e4 c2e4 e8e4 h4e4 f7f6 g5f4 c6a5 e4e2 f8f7 d4d5 a5b7 h1h2 f7g7 e2e6 g7f7 f4h6 b7a5 e6d6 a5c4 d6g3 g8h8 g3h4 c4e5 h6f4 h8g8 f4e5 f6e5 h4g3 g8f8 g3e5 f7e7 e5e6 e7e6 d5e6 f8e7 h2g3 e7f6

info depth 31 seldepth 50 multipv 2 score cp 224 nodes 4373253196 nps 25199970 hashfull 961 tbhits 0 time 173542 pv e3f4 f6h5 f4f3 h5f6 d2c3 e7d8 c2d3 d8c7 f3f4 c7e7 d3c2 a7a5 c2b1 f6d7 g1e1 e7f6 f4g3 f6e7 e1f1 d7f6 f1g1 f6h7 g3f4 h7f6 g1e1 f6d7 f4g3 e7f6 e1g1 e8b8 e4e5 d6e5 d4e5 d7e5 b1e4

[Master Om]

[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]} *

[zullil]

[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).

[Master Om]

[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]} *

[zullil]

[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.

[yanquis1972]

Analysis by asmFishW_2018-02-02_bmi2:

40.Re1 Qb7 41.Bd3 Qc7 42.Rb1 Qe7 43.Re2 Qc7 44.Rg1 a6 45.Reg2 Qe7 46.Re1 Qc7 47.Qf2 Na5 48.Qh4 Nh7 49.e5 dxe5 50.f6 Nxf6
White is better: +/- (0.88) Depth: 13/20 00:00:00 501kN
White is better: +/- (1.17) Depth: 17/25 00:00:01 5177kN
40.Qf4 Nh7
White is better: +/- (1.21) Depth: 18/33 00:00:01 13359kN
White is clearly better: +- (2.02 ++) Depth: 38/65 00:05:49 5894MN, tb=32923
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+ Kg7 49.Kg2 Qf6 50.Qb7+ Kh6 51.Qe4 Kh7 52.Kf3 Kg7 53.Kg4 Kf7 54.Qd5+ Kg7 55.Qb7+ Kh6 56.Qe4 Kg7 57.Kg3 a6 58.Kf3 Kf8 59.Qa8+ Kg7 60.Qb7+ Kh6 61.Qe4 Kg7 62.Ke3 Qh6 63.Qe7+ Kh8 64.Qd8+ Kh7 65.Qd7+ Kh8 66.Ke4 g4 67.Qe8+ Kg7 68.Qe7+ Kg8 69.hxg4 Qh1+ 70.Kf4 Qg1 71.Qe3 Qf1+ 72.Kg5 Qxc4 73.Qe8+ Kh7 74.Qd7+ Kh8 75.Qxd6 Qg8+ 76.Kh4
White is clearly better: +- (2.24 ++) Depth: 38/65 00:06:37 6805MN, tb=180379
White is clearly winning: +- (4.87 ++) Depth: 45/81 00:10:28 11580MN, tb=1818423

[Master Om]

[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.

Its instant. 3 sec goes for me copying the analysis. Actually am slow.

[Jouni]

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.

[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.

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