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Up Topic The Rybka Lounge / Computer Chess / Just some new Nets & new Fishes games
- - By MrKris (***) Date 2020-07-21 22:14
All engines the same 6 openings (from current CCC SfNNUE-Lc0 that Lc0 won).
Details see game data.
                           Score   Honey-XI-NN  Lc0.25.1_384 Stockfish_20
1: Honey-XI-NN_sv0721-14  13.5/24  ············ 1===1======0 ==1=======1=  +4 -1 =19
2: Lc0.25.1_384x30J91-60  13.0/24  0===0======1 ············ 1=1===1=====  +4 -2 =18
3: Stockfish_20071720      9.5/24  ==0=======0= 0=0===0===== ············  +0 -5 =19
                                   36 games, white +8 -0 =28 61%, draws 78%.


Stockfish lost both its games with black but Honey-NN and Lc0 drew both of theirs.
After the exchange sacrifice 16.Rxg2! it is difficult to find any improvements for black.
[Event "G/7'+1'' 2Gh Sy.6"]
[Site "2700X 14th | 2060 140W"]
[Date "2020.07.21"]
[Round "2"]
[White "Honey-XI-NN_sv0721"]
[Black "Stockfish_20071720"]
[Result "1-0"]
[ECO "A09"]
[Opening "Reti Opening"]
[Variation "Advance Variation, Anglo-Polish Attack"]
[TimeControl "420+1"]
[Termination "adjudication"]
[PlyCount "122"]
[WhiteType "human"]
[BlackType "human"]

1. Nf3 {book} d5 {book} 2. c4 {book} d4 {book} 3. b4 {book} f6 {book} 4. e3
{book} e5 {book} 5. c5 {book} a5 {+0.59/32 0 24s} 6. Qa4+ {+0.10/28 0 11s}
Qd7 {+0.82/29 0 7.3s} 7. Bb5 {0.0027 6.8s} c6 {+0.17/31 0 8.9s} 8. Bc4
{0.0027 5.9s} Ne7 {0.0035 6.3s} 9. b5 {+0.05/31 0 5.5s} Nd5 {0.0038 10s}
10. exd4 {0.0032 9.4s} Nf4 {0.0040 5.5s} 11. Kf1 {0.0031 6.2s} Qf5 {0.0032
16s} 12. d3 {+0.06/29 0 17s} Nxg2 {0.0028 4.3s} 13. Nbd2 {+0.21/27 0 5.4s}
Nf4 {0.0098 6.3s} 14. Rg1 {0.0032 10s} Qh3+ {0.0038 5.4s} 15. Ke1 {+0.50/23
0 4.7s} Ng2+ {-0.21/40 0 52s}
[FEN "rnb1kb1r/1p4pp/2p2p2/pPP1p3/Q1BP4/3P1N1q/P2N1PnP/R1B1K1R1 w kq - 6 16"]
16. Rxg2 {+0.79/27 0 11s !} Qxg2 {-0.16/37 0 11s} 17. bxc6 {+0.70/26 0 6.0s}
bxc6 {0.0034 5.8s} 18. Rb1 {+0.74/27 0 7.1s} Be7 {0.0038 5.1s} 19. Rb6
{+1.23/26 0 5.7s} Bg4 {-1.70/37 0 46s} 20. Rxc6 {+1.82/25 0 5.3s} Nd7
{-2.01/35 0 5.9s} 21. Ke2 {+1.72/28 0 8.5s} Qh3 {-2.42/40 0 30s} 22. Rc7
{+2.00/34 0 18s} exd4 {-2.34/39 0 3.0s} 23. Ba3 {+2.13/31 0 7.4s} Qxh2
{-2.48/35 0 4.9s} 24. Qxd7+ {+2.14/31 0 7.9s} Bxd7 {-2.50/36 0 4.9s} 25.
Nxh2 {+2.26/32 0 9.6s} Kd8 {-2.83/38 0 13s} 26. Rb7 {+2.29/33 0 22s} Rc8
{-2.66/34 0 4.1s} 27. Nb3 {+2.37/31 0 7.7s} a4 {-2.81/36 0 19s} 28. Nxd4
{+2.35/31 0 5.4s} Bxc5 {-2.99/31 0 3.8s} 29. Be6 {+2.36/31 0 8.1s} Bc6
{-3.00/32 0 4.2s} 30. Nxc6+ {+2.32/29 0 6.9s} Rxc6 {-2.77/32 0 4.2s} 31.
Bxc5 {+2.32/29 0 9.9s} Rxe6+ {-2.89/31 0 4.5s} 32. Be3 {+2.34/28 0 5.6s}
Rhe8 {-2.82/34 0 12s} 33. Rxg7 {+2.45/29 0 5.5s} R8e7 {-3.17/31 0 5.6s} 34.
Rg8+ {+2.37/28 0 5.5s} Re8 {-3.12/30 0 2.9s} 35. Rg4 {+2.59/29 0 19s} Ra6
{-2.69/31 0 3.4s} 36. Rh4 {+2.54/30 0 8.1s} Re7 {-2.86/31 0 5.8s} 37. Nf1
{+2.47/29 0 7.4s} a3 {-3.40/32 0 13s} 38. Kd2 {+2.69/27 0 6.1s} Ke8
{-3.55/32 0 16s} 39. Bd4 {+2.71/28 0 7.4s} Rd7 {-3.48/32 0 3.6s} 40. Bc3
{+2.86/26 0 6.3s} Kf8 {-3.77/32 0 18s} 41. Ng3 {+2.88/25 0 6.1s} Kg7
{-3.51/27 0 3.9s} 42. Ne4 {+3.24/24 0 5.2s} Re7 {-3.58/26 0 2.5s} 43. Nxf6
{+3.57/24 0 5.3s} Kg6 {-4.97/27 0 5.9s} 44. Ne4 {+3.73/22 0 4.4s} h5
{-5.45/29 0 16s} 45. f4 {+4.11/25 0 4.5s} Rb6 {-6.25/30 0 9.0s} 46. Rh1
{+4.33/26 0 3.8s} Kf5 {-6.25/29 0 1.9s} 47. Be5 {+4.52/25 0 4.0s} Rh6
{-6.42/28 0 2.2s} 48. Rh4 {+4.62/26 0 5.3s} Reh7 {-7.31/29 0 15s} 49. Nd6+
{+4.85/25 0 5.3s} Ke6 {-5.96/23 0 0.66s} 50. d4 {+4.91/25 0 3.7s} Kd5
{-7.02/26 0 7.5s} 51. Nf5 {+4.99/24 0 3.7s} Rb6 {-6.18/24 0 1.9s} 52. Ne3+
{+5.03/24 0 5.9s} Kc6 {-7.35/25 0 2.9s} 53. Kd3 {+5.11/24 0 4.7s} Kb7
{-7.16/21 0 0.39s} 54. d5 {+5.43/25 0 3.5s} Rb4 {-7.57/25 0 2.2s} 55. Bd4
{+5.61/25 0 3.6s} Kc7 {-7.64/19 0 0.36s} 56. f5 {+5.90/22 0 3.5s} Rb1
{-7.75/20 0 0.59s} 57. f6 {+6.19/21 0 4.0s} Kc8 {-7.97/21 0 1.0s} 58. Ke4
{+6.32/21 0 3.7s} Re1 {-7.96/20 0 0.36s} 59. Rf4 {+7.21/23 0 2.9s} Rf7
{-9.18/22 0 0.95s} 60. Kf5 {+7.39/22 0 2.9s} Kb7 {-11.36/22 0 2.8s} 61. Ke6
{+10.03/21 0 3.2s} Rf8 {-10.18/18 0 0.11s, White wins by adjudication} 1-0

Lc0 played the necessary N sacrifice 23...Ngf4+ but misplayed it. [Event "G/7'+1'' 2Gh Sy.6"]
[Site "2700X 14th | 2060 140W"]
[Date "2020.07.21"]
[Round "3"]
[White "Honey-XI-NN_sv0721"]
[Black "Lc0.25.1_384x30J91-60"]
[Result "1-0"]
[BlackElo "2400"]
[ECO "E99"]
[Opening "King's Indian"]
[Variation "Mar del Plata, 10.f3 f5 11.Be3 f4 12.Bf2 g5"]
[WhiteElo "2400"]
[TimeControl "420+1"]
[Termination "normal"]
[PlyCount "118"]
[WhiteType "human"]
[BlackType "human"]

1. d4 {book} Nf6 {book} 2. c4 {book} g6 {book} 3. Nc3 {book} Bg7 {book} 4.
e4 {book} d6 {book} 5. Nf3 {book} O-O {book} 6. Be2 {book} e5 {book} 7. O-O
{book} Nc6 {book} 8. d5 {book} Ne7 {book} 9. Ne1 {+0.31/29 0 34s} Nd7
{-0.33/8 0 9.2s} 10. Be3 {+0.41/28 0 11s} f5 {-0.30/11 0 5.9s} 11. f3
{+0.44/25 0 3.8s} f4 {-0.25/12 0 5.6s} 12. Bf2 {+0.45/25 0 5.3s} g5
{-0.23/11 0 5.5s} 13. b4 {+0.46/29 0 14s} Nf6 {-0.15/11 0 11s} 14. c5
{+0.40/27 0 15s} Ng6 {-0.23/14 0 20s} 15. c6 {+0.39/28 0 11s} b6 {-0.12/12
0 6.6s} 16. a4 {+0.25/31 0 15s} a6 {-0.10/12 0 6.1s} 17. g4 {+0.34/29 0
14s} fxg3 {-0.15/15 0 7.6s} 18. hxg3 {+0.58/26 0 3.6s} Nh5 {-0.19/16 0 11s}
19. Ng2 {+0.23/30 0 45s} Qf6 {-0.09/14 0 13s} 20. Ra3 {0.0030 10s} Bh3
{-0.16/15 0 12s} 21. b5 {0.0030 4.8s} a5 {-0.06/15 0 12s} 22. Kh2 {+0.26/31
0 14s} Bxg2 {-0.08/16 0 2.5s} 23. Kxg2 {0.0034 7.8s} Ngf4+ {-0.06/14 0
0.46s !? --Honey-NN agrees, says 0.00--} (23. .. Rf7 {?? Honey-NN:} 24. Rh1
{reducing black's attack and now white's K can escape via g1 or f1 if
needed} Nxg3 (24. .. Nhf4+ 25. gxf4 exf4 26. e5 Nxe5 27. Bd4 {about 2.75})
25. Bxg3 Nh4+ 26. Kg1 {about 2.48}) 24. gxf4 {0.0031 8.8s} Nxf4+ {-0.09/14
0 6.3s} 25. Kg3 {+0.01/37 0 8.9s} Qg6 {-0.18/15 0 32s ?? --black does not
have a move to waste--} (25. .. Rf7 {Honey-NN stayed with 0.00 = after only
9 secs.; PV at 2 mins:} 26. Be3 Raf8 27. Rh1 Bh6 28. Kg4 Bg7 29. Kg3 Bh6
30. Kg4 {etc.}) 26. Rh1 {+1.10/26 0 13s} Rf6 {-0.25/13 0 7.4s} 27. Qe1
{+1.29/26 0 3.0s} g4 {-0.71/15 0 24s} 28. fxg4 {+1.22/27 0 7.0s} h5
{-0.74/19 0 5.4s} 29. Nd1 {+1.06/29 0 9.2s} Raf8 {-0.79/20 0 3.1s} 30. Rg1
{+1.25/25 0 4.3s} Qxe4 {-0.58/15 0 14s} 31. Bf3 {+1.28/28 0 9.9s} Qc4
{-0.81/17 0 18s} 32. Kh2 {+1.77/27 0 5.2s} hxg4 {-0.45/15 0 9.3s} 33. Rxg4
{+1.68/29 0 5.3s} Rh6+ {-0.60/18 0 4.8s} 34. Rh4 {+1.76/30 0 4.5s} Nd3
{-0.82/17 0 8.1s} 35. Rxd3 {+1.71/33 0 4.7s} Rxh4+ {-0.96/19 0 22s} 36.
Bxh4 {+1.89/26 0 4.7s} Qxd3 {-0.97/17 0 0.61s} 37. Be4 {+2.61/27 0 5.6s}
Qc4 {-1.06/15 0 4.6s} 38. Nc3 {+2.74/26 0 4.0s} Rf4 {-1.42/13 0 15s} 39.
Bd8 {+3.34/25 0 3.9s} Bf6 {-1.62/14 0 10s} 40. Qg3+ {+3.95/25 0 4.0s} Kh8
{-1.80/18 0 8.1s} 41. Bxc7 {+4.67/23 0 4.5s} Qd4 {-2.33/12 0 18s} 42. Bxd6
{+6.26/24 0 4.4s} Rh4+ {-3.05/13 0 6.0s} 43. Kg2 {+6.67/25 0 4.1s} Qd2+
{-3.21/13 0 7.3s} 44. Kf1 {+6.97/28 0 8.6s} Rf4+ {-3.49/12 0 5.5s} 45. Kg1
{+6.98/28 0 4.5s} Qd4+ {-3.98/12 0 21s} 46. Kg2 {+7.19/26 0 5.7s} Qd2+
{-4.73/11 0 9.8s} 47. Kh3 {+7.26/27 0 3.8s} Rf1 {-4.59/10 0 7.3s} 48. Bf8
{+7.41/26 0 12s} Rc1 {-4.97/7 0 4.6s} 49. Nb1 {+7.49/24 0 6.7s} Rxb1
{-5.93/6 0 9.3s} 50. Bxb1 {+M8/31 0 3.4s} Qd1 {-6.55/6 0 5.4s} 51. c7
{0.0035 5.1s} Qh5+ {-7.66/6 0 6.7s} 52. Kg2 {0.0048 2.8s} Qe2+ {-7.05/7 0
3.0s} 53. Kh1 {0.0048 2.7s} Qd1+ {-7.73/7 0 6.6s} 54. Qg1 {0.0051 3.9s}
Qf3+ {-7.83/7 0 4.3s} 55. Qg2 {0.0048 2.9s} Qd1+ {-9.98/6 0 4.7s} 56. Kh2
{0.0056 3.0s} Qh5+ {-9.59/5 0 4.1s} 57. Qh3 {0.0056 3.0s} Bh4 {-9.94/5 0
3.7s} 58. c8=Q {0.0059 2.6s} Qe2+ {-23.48/4 0 2.9s} 59. Qg2 {0.00118 2.7s}
Bg3+ {-24.31/3 0 3.1s, White wins by adjudication} 1-0
Attachment: trialJ91svnHon.pgn - Games (104k)
Parent - - By MrKris (***) Date 2020-07-22 02:42
Not a game of mine but from CCC's Stockfish NNUE vs. Lc0 3|2 https://www.chess.com/computer-chess-championship .

Lc0's 6.b4 N !? is not in ChessTempo.com (free version), and the earlier moves are quite rare.

My proposed name: the Five Pawns Attack Gambit - 5 of white's first 6 moves are double-step pawn moves!

Here (2700X) Honey-NN prefered 6.e5 through 90 seconds.

But Honey-NN-Tactical=1 found 6.b4 at only 1 second staying with it, only very briefly considering  other moves, for 90 seconds, and continuously after 31 seconds.

(In the reversed Stockfish NNUE played 6.Bd3 and only drew, game 2 in the viewer.)

[Event "Stockfish+NNUE vs Lc0 (3|2)"]
[Site "Chess.com"]
[Date "2020.07.21"]
[Round "162"]
[White "Lc0"]
[Black "Stockfish NNUE"]
[Result "1-0"]
[ECO "A53"]
[Opening "Old Indian"]
[Variation "3.Nc3 c6"]
[TimeControl "180+2"]
[Termination "normal"]
[PlyCount "189"]
[WhiteType "human"]
[BlackType "human"]

1. d4 c6 2. c4 Nf6 3. Nc3 d6 4. e4 Nbd7 5. f4 Qa5 6. b4 {+0.68/16 0 N !? <<<<} Qxb4
{-0.68/28 0} 7. Bd2 {+0.69/18 0} Qb6 {-0.79/30 0} 8. e5 {+0.79/17 0} Ng8
{-0.83/25 0} 9. Nf3 {+0.89/14 0} g6 {-0.96/26 0} 10. Bd3 {+0.95/17 0} Bg7
{-0.98/28 0} 11. Qe2 {+1.05/15 0} dxe5 {-0.82/23 0} 12. fxe5 {+0.97/17 0}
Nh6 {-0.81/23 0} 13. Rb1 {+0.98/15 0} Qd8 {-0.98/26 0} 14. O-O {+0.97/15 0}
O-O {-1.41/31 0} 15. Bf4 {+1.31/13 0} e6 {-1.38/28 0} 16. Ne4 {+1.61/13 0}
Nf5 {-1.71/31 0} 17. g4 {+1.69/18 0} Nxd4 {-1.76/30 0} 18. Nxd4 {+1.69/19
0} Nxe5 {-1.88/32 0} 19. Bxe5 {+1.66/18 0} Bxe5 {-2.03/34 0} 20. Nf3
{+1.68/17 0} Bf4 {-2.06/30 0} 21. Ne1 {+1.75/16 0} e5 {-1.99/30 0} 22. Ng2
{+1.71/16 0} f5 {-1.84/31 0} 23. gxf5 {+1.89/17 0} Bxf5 {-1.84/32 0} 24.
Nxf4 {+1.99/17 0} exf4 {-1.99/30 0} 25. Rxb7 {+2.11/16 0} Qd4+ {-2.69/31 0}
26. Nf2 {+2.18/16 0} Rae8 {-2.66/31 0} 27. Qd1 {+2.29/15 0} Qe3 {-3.07/34
0} 28. Bxf5 {+2.32/14 0} Rxf5 {-3.12/32 0} 29. Qd3 {+2.33/13 0} Rg5+
{-2.40/28 0} 30. Kh1 {+2.18/1 0} a5 {-2.69/30 0} 31. Rc7 {+2.50/11 0} c5
{-2.80/28 0} 32. Ra7 {+2.60/12 0} h5 {-2.68/25 0} 33. Rxa5 {+2.65/13 0} Qe6
{-2.77/26 0} 34. Ra3 {+2.71/14 0} Kg7 {-3.28/30 0} 35. Ra7+ {+3.05/14 0}
Kh6 {-3.29/30 0} 36. Qd7 {+3.25/14 0} Qxd7 {-3.17/26 0} 37. Rxd7 {+3.24/13
0} Re2 {-3.86/29 0} 38. a4 {+3.40/13 0} Ra2 {-3.90/26 0} 39. Rf7 {+3.92/12
0} Re5 {-4.05/27 0} 40. Rxf4 {+4.01/12 0} Ree2 {-4.16/27 0} 41. Kg1
{+4.07/12 0} Rec2 {-4.31/26 0} 42. a5 {+4.38/13 0} Rxa5 {-4.71/28 0} 43.
Nd1 {+4.86/13 0} Rd2 {-4.30/27 0} 44. Ne3 {+5.70/9 0} Ra3 {-4.56/26 0} 45.
Re4 {+5.63/9 0} Raa2 {-4.55/34 0} 46. h4 {+5.95/11 0} Ra7 {-5.36/27 0} 47.
Rf2 {+7.55/9 0} Rd4 {-4.71/22 0} 48. Rff4 {+7.57/9 0} Rd2 {-5.54/34 0} 49.
Re5 {+7.55/8 0} Rd4 {-5.54/23 0} 50. Rxd4 {+9.82/8 0} cxd4 {-8.78/23 0} 51.
Nf1 {+10.82/8 0} Ra4 {-6.19/21 0} 52. Nd2 {+10.16/9 0} Ra2 {-10.60/27 0}
53. Nf3 {+10.45/10 0} d3 {-11.48/26 0} 54. Rd5 {+9.88/10 0} Rc2 {-12.98/26
0} 55. c5 {+10.22/11 0} Kg7 {-11.36/25 0} 56. Kf1 {+11.63/10 0} Kf6
{-14.25/26 0} 57. Ke1 {+13.59/10 0} Ke6 {-15.07/25 0} 58. Rg5 {+14.05/9 0}
Kf6 {-5.90/23 0} 59. Nd4 {+15.08/9 0} Rc4 {-24.24/22 0} 60. Rd5 {+14.43/10
0} Rc1+ {-47.59/23 0} 61. Kd2 {+26.61/8 0} Rc4 {-124.50/23 0} 62. Kxd3
{+28.77/8 0} Rc1 {-154.00/23 0} 63. c6 {+27.52/7 0} Kf7 {-154.04/34 0} 64.
Nc2 {+28.41/7 0} Rd1+ {-154.02/29 0} 65. Kc4 {+35.37/8 0} Rc1 {-M24/57 0}
66. Rd2 {+40.59/7 0} Rh1 {-M22/54 0} 67. c7 {+46.38/7 0} Rxh4+ {-M20/49 0}
68. Nd4 {+50.64/7 0} Rh1 {-M18/67 0} 69. Rc2 {+54.73/6 0} Ra1 {-M16/76 0}
70. Nc6 {+37.95/5 0} Ra8 {-M54/39 0} 71. Nb8 {+47.01/7 0} Ra4+ {-M20/77 0}
72. Kd5 {+50.65/6 0} Ra5+ {-M24/56 0} 73. Kd6 {+54.27/6 0} Rf5 {-M18/78 0}
74. Nd7 {+60.52/6 0} h4 {-M16/86 0} 75. c8=Q {+M500/5 0} Kg7 {-M14/94 0}
76. Qf8+ {+M500/4 0} Rxf8 {-154.13/54 0} 77. Nxf8 {+M500/1 0} Kxf8 {-M34/67
0} 78. Rc4 {+M500/3 0} g5 {-M32/66 0} 79. Rg4 {+M500/2 0} h3 {-M28/83 0}
80. Rxg5 {+M500/1 0} Kf7 {-M26/87 0} 81. Rh5 {+M500/2 0} Kf6 {-M24/89 0}
82. Rxh3 {+M500/1 0} Kf5 {-M22/94 0} 83. Rh4 {+66.11/8 0} Kg5 {-M20/99 0}
84. Re4 {+69.94/8 0} Kf5 {-M18/108 0} 85. Kd5 {+69.86/7 0} Kf6 {-M18/66 0}
86. Rf4+ {+67.23/7 0} Kg5 {-M18/70 0} 87. Ke5 {+68.09/7 0} Kg6 {-M16/84 0}
88. Rf5 {+64.08/7 0} Kg7 {-M14/131 0} 89. Rf6 {+68.86/7 0} Kg8 {-M12/245 0}
90. Kf5 {+M11/6 0} Kg7 {-M10/245 0} 91. Kg5 {+M9/1 0} Kh7 {-M8/245 0} 92.
Rg6 {+M7/1 0} Kh8 {-M6/1 0} 93. Kf6 {+M5/1 0} Kh7 {-M4/1 0} 94. Kf7 {+M3/1
0} Kh8 {-M2/1 0} 95. Rh6# {+M1/1 0} 1-0

[Event "Stockfish+NNUE vs Lc0 (3|2)"]
[Site "Chess.com"]
[Date "2020.07.21"]
[Round "161"]
[White "Stockfish NNUE"]
[Black "Lc0"]
[Result "1/2-1/2"]
[ECO "A53"]
[Opening "Old Indian"]
[Variation "3.Nc3 c6"]
[TimeControl "180+2"]
[Termination "adjudication"]
[PlyCount "171"]
[WhiteType "human"]
[BlackType "human"]

1. d4 c6 2. c4 Nf6 3. Nc3 d6 4. e4 Nbd7 5. f4 Qa5 6. Bd3 {+0.73/27 0} e5
{-0.37/12 0} 7. Ne2 {+0.71/27 0} exd4 {-0.35/13 0} 8. Nxd4 {+0.66/28 0} g6
{-0.33/13 0} 9. Be3 {+0.78/27 0} Bg7 {-0.35/12 0} 10. h3 {+0.82/25 0} O-O
{-0.38/13 0} 11. O-O {+0.71/27 0} Re8 {-0.41/13 0} 12. Qf3 {+0.71/25 0} Qc7
{-0.36/11 0} 13. g4 {+0.87/29 0} Nc5 {-0.35/12 0} 14. Bc2 {+0.86/22 0} a5
{-0.39/12 0} 15. b3 {+1.05/25 0} b6 {-0.40/12 0} 16. Rad1 {+0.98/24 0} Bb7
{-0.43/17 0} 17. f5 {+1.02/24 0} a4 {-0.45/16 0} 18. b4 {+1.29/26 0} Ncd7
{-0.45/18 0} 19. Qf2 {+1.16/26 0} Ne5 {-0.46/18 0} 20. Bg5 {+1.20/27 0}
Nfd7 {-0.47/20 0} 21. Bxa4 {+1.06/30 0} h6 {-0.48/19 0} 22. fxg6 {+1.03/30
0} fxg6 {-0.55/17 0} 23. Bf4 {+1.20/27 0} Qd8 {-0.50/19 0} 24. b5 {+1.21/27
0} cxb5 {-0.49/18 0} 25. Bxb5 {+1.34/29 0} Kh7 {-0.48/18 0} 26. a4
{+1.49/28 0} Rc8 {-0.50/21 0} 27. Bxe5 {+1.45/32 0} Rxe5 {-0.37/26 0} 28.
Nf5 {+0.10/33 0} gxf5 {-0.31/26 0} 29. Rxd6 Rc7 {-0.29/25 0} 30. Rfd1 Bc8
{-0.25/24 0} 31. Nd5 Qg5 {-0.23/23 0} 32. Nxc7 Nf6 {-0.22/22 0} 33. Rxf6
Bxf6 {-0.19/20 0} 34. Bd7 Bxd7 {-0.13/19 0} 35. Rxd7+ Kg8 {-0.12/18 0} 36.
Nd5 Rxe4 {-0.11/17 0} 37. Nxf6+ Qxf6 {-0.10/15 0} 38. Rd5 Rxc4 {-0.03/11 0}
39. Rxf5 Qd4 {-0.02/10 0} 40. Qxd4 Rxd4 {-0.02/8 0} 41. a5 bxa5 42. Rxa5
Rd3 {-0.01/6 0} 43. Kg2 Kg7 {-0.02/5 0} 44. h4 {+0.26/67 0} Rd4 {-0.01/5 0}
45. Kf3 {+0.26/66 0} Rb4 {-0.02/5 0} 46. Ra7+ {+0.26/68 0} Kg8 {-0.02/6 0}
47. h5 {+0.26/77 0} Rc4 {-0.02/6 0} 48. Ra6 {+0.26/72 0} Kh7 {-0.03/6 0}
49. Ra3 {+0.26/74 0} Kh8 {-0.03/6 0} 50. Ra6 {+0.26/74 0} Kh7 {-0.03/6 0}
51. Kg3 {+0.26/78 0} Rc3+ {-0.03/6 0} 52. Kf2 {+0.26/74 0} Rc4 {-0.02/6 0}
53. Kg3 {+0.26/70 0} Rc3+ {-0.03/6 0} 54. Kf2 {+0.26/81 0} Rc4 {-0.02/5 0}
55. Kf3 {+0.26/74 0 3-fold repetition} Rc3+ {-0.03/6 0} 56. Ke2 {+0.26/66
0} Rc4 {-0.02/5 0} 57. Ra7+ {+0.26/65 0} Kg8 {-0.02/6 0} 58. Kf3 {+0.26/66
0} Rb4 {-0.03/6 0} 59. Ra6 {+0.26/64 0} Kh7 {-0.03/6 0} 60. Rg6 {+0.26/63
0} Rb7 {-0.03/6 0} 61. Kf4 {+0.26/64 0} Rf7+ {-0.03/6 0} 62. Ke5 {+0.26/57
0} Rb7 {-0.03/6 0} 63. Rc6 {+0.26/56 0} Rb4 {-0.03/5 0} 64. Kf5 {+0.26/55
0} Rb5+ {-0.03/6 0} 65. Ke4 {+0.26/57 0} Rb4+ {-0.03/5 0} 66. Kf3 {+0.26/49
0} Rb3+ {-0.03/5 0} 67. Kg2 {+0.26/52 0} Rb4 {-0.03/5 0} 68. Kg3 {+0.26/52
0} Rb3+ {-0.03/5 0} 69. Kh4 {+0.26/47 0} Kg7 {-0.03/5 0} 70. Rc7+ {+0.26/46
0} Kg8 {-0.02/6 0} 71. Re7 {+0.26/46 0} Rd3 {-0.02/6 0} 72. Re6 {+0.26/44
0} Kh7 {-0.02/6 0} 73. Rb6 {+0.26/41 0} Kg7 {-0.03/6 0} 74. Re6 {+0.17/41
0} Rb3 {-0.03/6 0} 75. Rg6+ {+0.17/34 0} Kh7 {-0.02/7 0} 76. Rf6 {+0.17/37
0} Kg7 {-0.03/6 0} 77. Rg6+ Kh7 {-0.02/7 0} 78. Rd6 Kg7 {-0.03/6 0} 79.
Rd7+ Kg8 {-0.02/6 0} 80. Re7 Rd3 {-0.02/6 0} 81. Re5 Kg7 {-0.02/5 0} 82.
Ra5 Re3 {-0.02/5 0} 83. Ra6 Re1 {-0.02/5 0} 84. Kg3 Rf1 {-0.02/5 0} 85.
Ra7+ Kg8 {-0.02/6 0} 86. Ra6 1/2-1/2

 
FEN: r1b1kb1r/pp1npppp/2pp1n2/q7/2PPPP2/2N5/PP4PP/R1BQKBNR w KQkq - 1 6 
Honey-XI-NN.exe: --Tactical=1--  Found 510 tablebases
 14/20  00:00        2,920k  8,133k  +0.54  6.e5 Ne4 7.Qd3 Nxc3 8.Bd2 Qc7 9.Bxc3 g6 10.Qg3 Bg7 11.Nf3 Nb6 12.b3 Bf5 13.Be2 d5
 15/27  00:01        4,610k  8,116k  +0.55  6.b4 Qc7 7.e5 dxe5 8.dxe5 Nxe5 9.fxe5 Qxe5+ 10.Nge2 Qc7 11.Qb3 e5 12.Ng3 a5 13.c5 Be7 14.Bc4 0-0 15.0-0 axb4
 16/31  00:01        7,829k  8,156k  +0.49  6.b4 Qxb4 7.Bd2 Qb6 8.e5 Ng8 9.Nf3 g6 10.Bd3 Bg7 11.Ne4 Nh6 12.Rb1 Qc7 13.0-0 0-0 14.Qe1 Re8 15.Qh4
 17/27  00:01        8,636k  8,139k  +0.47  6.Bd3 e5 7.Nf3 exd4 8.Nxd4 Qb6 9.Qe2 Nc5 10.Bc2 g6 11.Nb3 Bg4 12.Qf2 Be6 13.Nxc5 Qxc5 14.Qxc5 dxc5
 18/26  00:01        9,411k  8,134k  +0.45  6.b4 Qxb4 7.Bd2 Qa5 8.e5 dxe5 9.fxe5 Nxe5 10.dxe5 Qxe5+ 11.Be2 Qc7 12.Bd3 Qe5+ 13.Qe2 Qxe2+ 14.Ngxe2 e5 15.Ne4 Nxe4 16.Bxe4 f5 17.Bf3 Bc5
 19/36  00:02       17,085k  8,090k  +0.57  6.Qc2 e5 7.Nf3 exd4 8.Nxd4 g6 9.Be2 Bg7 10.Be3 0-0 11.h3 Qd8 12.0-0 Re8 13.Rfe1 Nc5 14.Bf3 Qe7 15.Bf2 Ne6 16.Qd2 Nxd4 17.Bxd4 a6 18.Rad1 Be6 19.Be3
 20/38  00:04       28,261k  8,031k  +0.47  6.b4 Qxb4 7.Bd2 Qb6 8.e5 dxe5 9.fxe5 Qxd4 10.Nf3 Qg4 11.exf6 exf6 12.Qe2+ Be7 13.0-0-0 Qe6 14.h4 0-0 15.Re1 Ba3+ 16.Kd1 Nc5 17.Nd4 Qg4 18.Qxg4 Bxg4+ 19.Kc2
.21/39  00:04       35,271k  8,062k  +0.45  6.b4 Qc7 7.e5 dxe5 8.dxe5 Nxe5 9.fxe5 Qxe5+ 10.Nge2 Qc7 11.Qb3 g6 12.Ng3 a5 13.b5 a4 14.Qc2 Bg7 15.Rb1 Ng4 16.Be2 0-0 17.Nce4 cxb5 18.Rxb5 Bd7
 22/44  00:05       40,211k  8,086k  +0.48  6.Qc2 e5 7.Nf3 g6 8.Be2 Bg7 9.dxe5 dxe5 10.f5 0-0 11.0-0 b5 12.cxb5 cxb5 13.fxg6 hxg6 14.Bxb5 Rb8 15.Be2 Nc5 16.Kh1 Rb4 17.Ng5 Ba6 18.Be3 Bxe2
 22/44  00:05       42,387k  8,101k  +0.48  6.Qc2 e5 7.Nf3 g6 8.Be2 Bg7 9.dxe5 dxe5 10.f5 0-0 11.0-0 b5 12.cxb5 cxb5 13.fxg6 hxg6 14.Bxb5 Rb8 15.Be2 Nc5 16.Kh1 Rb4 17.Ng5 Ba6 18.Be3 Bxe2
 23/40  00:07       54,748k  8,131k  +0.60  6.b4 Qxb4 7.Bd2 Qb6 8.e5 dxe5 9.fxe5 Qxd4 10.Nf3 Qg4 11.exf6 exf6 12.Qe2+ Be7 13.0-0-0 Nc5 14.h3 Qe6 15.Qf2 0-0 16.Nd4 Qe5 17.Bf4 Qh5 18.Qe2 Qxe2 19.Bxe2 Re8 20.Rhe1 Ne6 21.Be3 Nxd4 22.Bxd4 Be6 23.Kc2 Bb4 24.Kb2
.27/51  00:30      240,164k  8,004k  +0.34  6.b4 Qxb4
 28/51  00:31      245,383k  8,005k  +0.45  6.Bd3 e5 7.Nge2 g6 8.0-0 exd4 9.Nxd4 Bg7 10.Be3 0-0 11.h3 Qc7 12.Nde2 Re8 13.Qd2 a6 14.Rad1 b5 15.Ng3 Bb7 16.Bc2 Nb6 17.b3 bxc4 18.Qxd6 Qxd6 19.Rxd6 cxb3 20.axb3
 28/51  00:39      313,549k  7,979k  +0.45  6.Bd3 e5 7.Nge2 g6 8.0-0 exd4 9.Nxd4 Bg7 10.Be3 0-0 11.h3 Qc7 12.Nde2 Re8 13.Qd2 a6 14.Rad1 b5 15.Ng3 Bb7 16.Bc2 Nb6 17.b3 bxc4 18.Qxd6 Qxd6 19.Rxd6 cxb3 20.axb3
 28/6  00:40      319,180k  7,978k  +0.38  6.Bd3 e5
 29/52  00:44      350,854k  7,969k  +0.58  6.b4 Qxb4 7.Bd2 Qa5 8.e5 dxe5 9.fxe5 Nxe5 10.Nd5 Qd8 11.dxe5 Ng4 12.Ne3 Nxe5 13.Bc3 Qxd1+ 14.Rxd1 Nd7 15.Nf3 f6 16.Bb4 e5 17.Bxf8 Nxf8 18.Bd3 Be6 19.Bc2 Rd8 20.0-0 Ng6 21.Rfe1 0-0 22.Rb1 b6 23.Be4 Rc8 24.Rbc1 Nf4
.32/49  01:32      718,910k  7,854k  +0.48  6.b4 Qxb4 7.Bd2 Qa5 8.e5 dxe5 9.fxe5 Nxe5 10.Nd5 Qd8 11.dxe5 cxd5 12.exf6 exf6 13.cxd5 Qxd5 14.Qe2+ Qe6 15.Nf3 Bc5 16.Qxe6+ fxe6 17.Bd3 b6 18.Ke2 Bb7 19.Be3 Bxe3 20.Kxe3 Ke7 21.a4 Rhc8 22.Rhb1 Rc7 23.a5 bxa5 24.Rxa5 Kf7 25.Rba1 Bd5 26.Bxh7 Bxf3 27.gxf3 f5
 33/58-  01:36      755,732k  7,854k  +0.42  6.b4 Qxb4

FEN: r1b1kb1r/pp1npppp/2pp1n2/q7/2PPPP2/2N5/PP4PP/R1BQKBNR w KQkq - 1 6 
Honey-XI-NN.exe: (defaults)   Found 510 tablebases
.24/45  00:08       68,181k  8,084k  +0.41  6.e5 Ne4 7.Qc2 Nxc3 8.Bd2 g6 9.Bxc3 Qc7 10.Nf3 Bh6 11.g3 0-0 12.h4 dxe5 13.dxe5 Nc5 14.h5 Bf5 15.Qc1 Bg7 16.hxg6 hxg6 17.Qe3 Na4 18.Nd4 Rfd8 19.Nxf5 gxf5 20.Rh5 Nxc3
 25/41  00:09       71,333k  8,081k  +0.39  6.Qc2 e5 7.Nf3 exd4 8.Nxd4 g6 9.Be2 Bg7 10.0-0 0-0 11.Be3 Re8 12.Bf2 Nc5 13.Nb3 Nxb3 14.axb3 Qc7 15.h3 b5 16.cxb5 cxb5 17.Rfc1 b4 18.Nb5 Qxc2 19.Rxc2 Nxe4 20.Nc7 Nxf2 21.Bf3 Rb8 22.Nxe8 Bf5 23.Rxf2 Rxe8 24.Rd1 Be6 25.Rxd6 Bxb3
 25/41  00:10       80,683k  8,067k  +0.39  6.Qc2 e5 7.Nf3 exd4 8.Nxd4 g6 9.Be2 Bg7 10.0-0 0-0 11.Be3 Re8 12.Bf2 Nc5 13.Nb3 Nxb3 14.axb3 Qc7 15.h3 b5 16.cxb5 cxb5 17.Rfc1 b4 18.Nb5 Qxc2 19.Rxc2 Nxe4 20.Nc7 Nxf2 21.Bf3 Rb8 22.Nxe8 Bf5 23.Rxf2 Rxe8 24.Rd1 Be6 25.Rxd6 Bxb3
 26/47  00:10       83,457k  8,072k  +0.37  6.e5 Ne4 7.Qc2 Nxc3 8.Bd2 g6 9.Bxc3 Qc7 10.Nf3 Bh6 11.g3 0-0 12.h4 dxe5 13.h5 exd4 14.Nxd4 Bg7 15.hxg6 hxg6 16.Ne6 Bxc3+ 17.bxc3 Qd6 18.Ng5 Qf6 19.0-0-0 Re8 20.Rh7 Nc5 21.Rxf7 Bf5 22.Rxf6 Bxc2
.35/57  01:20      630,471k  7,881k  +0.52  6.e5 Ne4 7.Qc2 Nxc3 8.Bd2 g6 9.Bxc3 Qc7 10.Nf3 Bh6 11.g3 dxe5 12.fxe5 Nb6 13.b3 a5 14.a4 f6 15.Bg2 fxe5 16.dxe5 Bf5 17.Qe2 Bg7 18.0-0 Nd7 19.Rae1 0-0 20.Bd4 Bg4 21.h3 Bxf3 22.Bxf3 e6 23.Qe3 b6 24.Kg2 Rae8 25.h4 c5 26.Bc3 Rf5 27.g4 Rxe5
 35/55  01:30      707,696k  7,863k  +0.46  6.e5 Ne4
 36/55  01:36      750,966k  7,858k  +0.46  6.e5 Ne4
Parent - - By Clementin (*) Date 2020-07-22 13:23 Upvotes 1
Wow B4!!!! Very original!

Thank you for taking the time to write these reports. I often discover interesting things reading them.
Parent - By MrKris (***) Date 2020-07-22 17:02
Thank you!

CCC has 90 Xeon HT threads at 2.7GHz, I have 1/6th, 16 Ryzen SMT at 3.7GHz, except for the increment and hash my 7|1 is only roughly 1/3 of their 3|2.
- By MrKris (***) Date 2020-07-22 17:39 Upvotes 1
Added the games to the first post and:
upgraded Honey's and Lc0's nets
ShashChess instead of Stockfish
6 differnt openings (CCC SfNNUE-Lc0) rev., same each engine

                           Score   ShashChess-1 Lc0.25.1_384 Honey-XI-NN_
1: ShashChess-12.1_Capa.  12.5/24  XXXXXXXXXXXX =1=1====0=== =10======10=  +4 -3 =17
2: Lc0.25.1_384x30J91-80  12.5/24  =0=0====1=== XXXXXXXXXXXX ===1=1======  +3 -2 =19
3: Honey-XI-NN_sv72209    11.0/24  =01======01= ===0=0====== XXXXXXXXXXXX  +2 -4 =18
                                   36 games, white +9 -0 =27 63%, 75% draws


Arena calls this C23 Bishop's Opening, Calabrese Countergambit, but here white plays the Countercounter (nullifies to "") Gambit variation :) .
The book saw 3 white wins and 3 draws.
3.d3 Nf6 4.Nf3 fxe4 5.dxe4 Bb4 =-=, 5...Bc5 1-0
3.d4 exd4 4.Nh3 Nf6: 2 1-0 and 2 =-=.
My db had only 1 human game with 4.Nh3, inserted below. [Event "G/7'+1'' 2Gh Sy.6"]
[Site "2700X 14th | 2060 140W"]
[Date "2020.07.22"]
[Round "2"]
[White "Honey-XI-NN_sv72209"]
[Black "ShashChess-12.1_Capa."]
[Result "1-0"]
[BlackElo "2400"]
[ECO "C23"]
[Opening "Bishop's Opening"]
[Variation "Calabrese Countergambit"]
[WhiteElo "2400"]
[TimeControl "420+1"]
[Termination "normal"]
[PlyCount "128"]
[WhiteType "human"]
[BlackType "human"]

1. e4 {book} e5 {book} 2. Bc4 {book} f5 {book} 3. d4 {+0.62/30 0 21s} exd4
{-0.93/28 0 9.4s} 4. Nh3 {+0.75/27 0 6.7s} Nf6 {-0.67/30 0 15s} 5. e5
{+0.74/29 0 4.9s} Ng4 {-0.84/26 0 4.4s}

( 5. .. Ne4 6. O-O Nc6 7. Re1 Nxe5 8. Rxe4 {! Honey-NN-Tactical=1 <<< Diagram >>>}

(8.Bd5 {? in 2004, Paridar-2232 0-1 Gozzoli-2429} 8. Bd5 d6 9. f4 {9.Nd2 0.26 +=, Hon. 1 min.} Ng4 {-0.13 +=/=, 9...Nf7 0.00 =}
10. Ng5 c6 11. Bf7+ Ke7 12. Bh5 Nf6 13. Nf7 Qe8 14. Qxd4 Be6 15. Nxh8 Qxh5
16. Qb4 b6 17. Nd2 Kd7 18. Nc4 b5 19. Na5 d5 {0-1})

8...fxe4 9. Qh5+ Ng6 10. Bg5 Be7 11. Nf4 d5 12. Nxg6 Bg4 13. Qxg4 hxg6
14. Bxe7 Qxe7 15. Bxd5 e3 16. Qe4 {1.49 +/ 2 mins.} )

6. O-O {+0.68/27 0 5.9s} Nc6 {-1.02/31 0 15s} 7. Re1 {+0.80/27 0 4.7s} Be7 {-0.91/29 0 7.3s} 8. Bb3
{+0.93/28 0 5.9s} Ngxe5 {-0.93/29 0 8.2s} 9. Nd2 {+0.82/28 0 13s} d6
{-0.71/29 0 4.7s} 10. Nf3 {+0.93/27 0 4.9s} Na5 {-0.78/29 0 7.8s} 11. Nxe5
{+1.55/31 0 11s} dxe5 {-0.79/32 0 5.9s} 12. Rxe5 {+1.59/28 0 3.8s} Nxb3
{-1.21/33 0 16s} 13. Bg5 {+1.62/29 0 4.6s} Nxa1 {-1.16/31 0 5.9s} 14. Rxe7+
{+1.74/27 0 7.1s} Qxe7 {-1.12/32 0 5.3s} 15. Bxe7 {+1.71/30 0 8.6s} Kxe7
{-1.37/32 0 11s }
[FEN "r1b4r/ppp1k1pp/8/5p2/3p4/7N/PPP2PPP/n2Q2K1 w - - 0 16"]
16. Qxd4 {+1.80/26 0 5.2s} Be6 {-1.38/29 0 7.2s} 17. Qxg7+ {+1.80/27 0 6.8s}
Kd6 {-1.56/30 0 8.8s} 18. Nf4 {+1.86/26 0 6.1s} Rhe8 {-1.49/29 0 14s} 19.
Qd4+ {+1.87/27 0 6.7s} Kc6 {-1.43/30 0 9.6s} 20. Qc3+ {+1.86/30 0 7.2s} Kd7
{-1.37/31 0 4.0s} 21. b3 {+1.87/29 0 17s} Bg8 {-1.61/35 0 30s} 22. Qxa1
{+2.47/30 0 17s} Rad8 {-1.49/34 0 4.4s} 23. h4 {+2.32/31 0 8.1s} Kc8
{-1.68/37 0 8.3s} 24. Qf6 {+2.45/30 0 6.4s} Rf8 {-1.64/35 0 4.1s} 25. Qh6
{+2.49/30 0 10s} a6 {-1.86/35 0 32s} 26. Kh2 {+2.56/31 0 17s} Kb8 {-1.78/32
0 7.2s} 27. f3 {+2.69/29 0 3.9s} Rde8 {-1.65/31 0 27s} 28. a4 {+2.86/29 0
7.9s} Ka7 {-2.53/34 0 25s} 29. a5 {+3.05/33 0 17s} Kb8 {-2.62/32 0 11s} 30.
c4 {+3.22/30 0 4.0s} Rd8 {-2.52/31 0 5.3s} 31. Qg7 {+3.24/32 0 12s} Rf7
{-2.62/30 0 5.3s} 32. Qg5 {+3.21/33 0 14s} Rff8 {-2.69/31 0 6.7s} 33. Qh6
{+3.21/32 0 5.6s} Rde8 {-2.36/32 0 15s} 34. Nh5 {+3.35/30 0 6.4s} Rf7
{-2.82/38 0 6.1s} 35. Qg5 {+3.42/31 0 9.3s} Ref8 {-2.67/35 0 3.0s} 36. Ng7
{+3.48/28 0 4.9s} f4 {-2.57/32 0 13s} 37. Qe5 {+3.55/27 0 5.5s} Rd7
{-3.40/33 0 16s} 38. Ne8 {+3.65/30 0 13s} h6 {-3.57/28 0 2.8s} 39. Nf6
{+3.87/27 0 3.6s} Rdf7 {-3.14/28 0 2.4s} 40. Nd5 {+3.94/28 0 7.0s} Rh7
{-4.16/33 0 36s} 41. Nxf4 {+4.02/26 0 5.2s} Bf7 {-3.70/28 0 2.9s} 42. Qe4
{+4.13/28 0 4.2s} Rg7 {-4.20/30 0 5.8s} 43. g4 {+4.26/30 0 4.5s} Rc8
{-4.43/28 0 5.8s} 44. Qe5 {+4.26/29 0 4.1s} Rh7 {-4.35/28 0 1.3s} 45. Qf5
{+4.48/29 0 9.4s} Rhh8 {-4.51/34 0 2.1s} 46. Kg3 {+4.72/27 0 5.1s} Rcf8
{-4.60/34 0 2.8s} 47. Qd7 {+4.85/26 0 2.7s} Rh7 {-4.52/31 0 1.4s} 48. Ne6
{+5.00/28 0 6.8s} Rc8 {-5.66/29 0 4.8s} 49. Nc5 {+5.02/23 0 2.7s} Bg8
{-6.50/28 0 8.5s} 50. Qf5 {+5.25/25 0 5.1s} Re8 {-6.73/25 0 2.1s} 51. Qg6
{+5.28/24 0 5.3s} Rc8 {-7.17/27 0 6.2s} 52. Qe4 {+5.42/24 0 3.7s} c6
{-7.09/26 0 0.17s} 53. h5 {+5.58/23 0 4.6s} Rd8 {-6.62/27 0 1.5s} 54. f4
{+5.79/24 0 8.3s} Ka8 {-7.01/25 0 1.0s} 55. Qg6 {+5.87/24 0 2.9s} Ka7
{-8.05/23 0 2.2s} 56. f5 {+6.06/23 0 6.4s} Rc8 {-8.59/21 0 1.3s} 57. Ne4
{+6.16/20 0 3.1s} Re7 {-8.03/19 0 0.39s} 58. Nf6 {+6.33/20 0 3.1s} Bf7
{-7.81/16 0 0.39s} 59. Qxh6 {+6.38/19 0 2.4s} Re2 {-8.89/19 0 2.0s} 60. Qf4
{+6.38/20 0 3.2s} Ka8 {-8.61/18 0 0.77s} 61. h6 {+6.94/19 0 2.2s} Rb2
{-11.56/18 0 1.4s} 62. Qe3 {+7.28/21 0 2.8s} Rb1 {-8.76/17 0 0.52s} 63. h7
{+7.45/21 0 3.4s} Rd1 {-17.55/19 0 1.5s} 64. Qe7 {+7.60/19 0 3.0s} Be6
{-18.99/19 0 1.1s, White wins by adjudication} 1-0 Honey-NN's improvement to the human game 8.RxNe4.
Limited time and engines are not always right but it could be what white missed.
r1bqkb1r/pppp2pp/8/4np2/2BpR3/7N/PPP2PPP/RNBQ2K1 b kq - 0 8
- - By MrKris (***) Date 2020-07-25 23:50
Newer nets than the last post, slightly different CPU engines.

  Latvian Gambit - 8 main variations


                           Elo +/-   Games   Score                Draws   
1 Stockfish+NNUE_sv72505  : 21  98  17.0/32  53.1%  +11 =12 -9    37.5%
2 Stockfish-20071720      :  0 100  15.5/32  48.4%  +10 =11 -11   34.4%
3 Lc0.25.1_384x30J91-100  :  0  95  15.5/32  48.4%   +9 =13 -10   40.6%
                          48 games, white +27 =18 -3 75%

White score and %:  consistant with human praxis
+6 =0 -0 6.0/6 100% 1.e4 e5 2.Nf3 f5 3.Nxe5! Qf6 4.d4 d6 5.Nc4 fxe4
+5 =1 -0 5.5/6 92%  1.e4 e5 2.Nf3 f5 3.Nxe5! Qf6 4.Nc4 fxe4 5.Nc3 Qf7
+5 =1 -0 5.5/6 92%  1.e4 e5 2.Nf3 f5 3.exf5 e4
+2 =4 -0 4.0/6 67%  1.e4 e5 2.Nf3 f5 3.d4
+5 =1 -0 5.5/6 92%  1.e4 e5 2.Nf3 f5 3.Bc4?! d6? {Philidor Lopez Countergambit}
+4 =2 -0 5.0/6 83%  1.e4 e5 2.Nf3 f5 3.Bc4?! fxe4 4.Nxe5 Qg5?! 5.d4 Qxg2
+0 =3 -3 1.5/6 25%  1.e4 e5 2.Nf3 f5 3.Bc4?! fxe4 4.Nxe5 d5! 5.Qh5+ g6 6.Nxg6 hxg6 7.Qxh8?! Kf7
+0 =6 -0 3.0/6 50%  1.e4 e5 2.Nf3 f5 3.Bc4?! fxe4 4.Nxe5 d5! 5.Qh5+ g6 6.Nxg6 hxg6 7.Qxg6+! Kd7 8.Bxd5


Maybe the shortest engine-engines wins I've seen on my machine.
Stockfish finds a N sacrifice played 14 years ago in correspondence.
[Event "Latvian 7|1 2Gh Sy.6"]
[Site "2700X 14 | 2060 140W"]
[Date "2020.07.25"]
[Round "2"]
[White "Stockfish_20071720"]
[Black "Lc0.25.1_384x30J91-100"]
[Result "1-0"]
[ECO "C40"]
[Opening "Latvian Gambit"]
[Variation "3.Nxe5 Qf6 4.Nc4"]
[TimeControl "420+1"]
[Termination "adjudication"]
[PlyCount "44"]
[WhiteType "human"]
[BlackType "human"]

1. e4 {book} e5 {book} 2. Nf3 {book} f5 {book} 3. Nxe5 {book} Qf6 {book}
4. Nc4 {book} fxe4 {book} 5. Nc3 {book} Qf7 {book} 6. Ne3 {+1.60/31 28s}
c6 {-1.08/12 4.9s} 7. d3 {+2.11/26 4.2s --commonly the key in 3.Nxe5 is this or f3 not trying to win black's e-pawn--} exd3 {-1.00/14 6.7s}
8. Bxd3 {+2.72/29 5.0s} d5 {-1.18/13 5.9s} 9. O-O {+2.95/27 4.6s}
Bd6 {-1.02/15 13s}
[FEN "rnb1k1nr/pp3qpp/2pb4/3p4/8/2NBN3/PPP2PPP/R1BQ1RK1 w kq - 2 10"]
10. Nexd5 {+2.98/30 0 4.6s !! --it seems to be in the way of Bc1 and Rf1-e1 and clears a better square for the other N--} cxd5 {-1.08/15 0 2.8s} 11. Nb5 {+2.62/34 0
13s} Bc7 {-1.07/14 0 6.2s}

( {<<< in 1992, Schlogel,M. 1-0 Taufratshofer, M., corres.} 11...Bf8 12. Re1+ Kd8 13. Bg5+ Nf6 14. Bc4 Qd7
15.Bxd5 Be7 16.Rxe7 Kxe7 17.Qd4 Re8 18.Re1+ Kf8 19.Qxf6+ gxf6 20.Bh6+ Qg7 21.Bxg7+ Kxg7 22.Rxe8 {black has zero pieces developed: 1-0 >>>} )

12. Re1+ {+2.58/27 0 6.9s} Kd8 {-1.10/14 0 8.9s}
13. c4 {+2.58/29 0 5.3s ! --'puts the cherry on top'/completes the process--} Nf6 {-1.10/13 0 9.6s} 14. Nxc7 {+2.98/30 0 6.9s}
Qxc7 {-1.13/14 0 5.1s} 15. Bg5 {+2.94/30 0 5.4s} Nd7 {-1.17/13 0 21s} 16.
cxd5 {+3.59/32 0 6.7s} Qd6 {-1.29/14 0 6.6s} 17. Qe2 {+5.31/30 0 5.7s} Nb6
{-3.02/9 0 19s} 18. Rac1 {+5.30/32 0 5.8s --black has developed 2 N's, white 2 B's, but the files decide--} Bd7 {-6.25/7 0 21s} 19. Bf4
{+7.05/28 0 5.2s} Qb4 {-8.03/6 0 10s} 20. Bc7+ {+M11/104 0 5.3s} Kc8
{-9.37/6 0 0.002s} 21. Bxb6+ {+M9/215 0 5.1s} Qc4 {-M8/2 0 20s} 22. Rxc4+
{+M7/245 0 0.41s} Bc6 {-M6/2 0 10s, White wins by adjudication a half move longer than the original correspondence game but Stockfish has a Q and is mating.} 1-0

I only have 3 human games after 5...Nh6. They all continued 6.Nxh7: in 1977 corres. 6...Nxd4 0-1 in 22, in 1992 amature 6...Qh4 1-0 in 10, in 1999 2200's 6...Ng4 1-0 in 31.
The engines here, all six games +2.xx +/ evaluation, continued 6.d5, which seems better to me.
1--- Stockfish's evaluation goes to +3.12, normally +- for it, at move 9!
2--- The same variation Stockfish as black calls itself lost (-3.17) at move 16 vs. Sf'NNUE.

[Event "Latvian 7|1 2Gh Sy.6"]
[Site "2700X 14 | 2060 140W"]
[Date "1--- 2020.07.25"]
[Round "2"]
[White "Stockfish_20071720"]
[Black "Lc0.25.1_384x30J91-100"]
[Result "1-0"]
[BlackElo "2400"]
[ECO "C41"]
[Opening "Philidor"]
[Variation "Lopez Countergambit"]
[WhiteElo "2400"]
[TimeControl "420+1"]
[Termination "normal"]
[PlyCount "72"]
[WhiteType "human"]
[BlackType "human"]

1. e4 {book} e5 {book} 2. Nf3 {book} f5 {book} 3. Bc4 {book} d6 {book} 4.
d4 {+2.59/29 0 11s} Nc6 {-1.57/11 0 8.7s} 5. Ng5 {+2.54/28 0 4.7s} Nh6
{-1.60/11 0 3.4s} 6. d5 {+2.38/29 0 5.5s} Ne7 {-1.65/12 0 13s} 7. Nc3
{+2.60/31 0 4.6s} g6 {-1.68/10 0 3.4s} (7. .. a6 8. Ne6 Bxe6 9. dxe6 g6 10.
Bg5 c6 {-- 11.Bf6 Lc0 1/2-1/2 Sf, white won the other 5 games here. --} 11.
Qd2 Nhg8 12. O-O-O {Honey-NN 1 min. +2.12}) 8. exf5 {+2.97/31 0 19s} Nhxf5
{-1.85/12 0 11s} 9. g4 {+3.12/27 0 4.3s} Nh4 {-2.00/13 0 13s} 10. Bb5+
{+3.28/26 0 4.9s} c6 {-2.05/15 0 2.0s} 11. dxc6 {+2.97/29 0 4.9s} Nxc6
{-2.13/14 0 8.7s} 12. Qd5 {+3.43/32 0 5.7s} Qd7 {-2.17/13 0 7.3s} 13. Be3
{+3.47/32 0 5.2s} h6 {-2.05/14 0 7.2s} 14. Nce4 {+3.43/34 0 5.4s} Be7
{-2.91/11 0 24s} 15. Qf7+ {+4.62/30 0 6.0s} Kd8 {-1.96/9 0 0.001s} 16.
O-O-O {+4.81/31 0 5.5s} Kc7 {-3.52/9 0 20s} 17. Qg7 {+5.14/33 0 6.2s} Qe8
{-3.34/8 0 13s} 18. Rxd6 {+5.59/35 0 6.1s} hxg5 {-3.74/8 0 6.2s} 19. Bxg5
{+6.02/38 0 19s} Qf8 {-4.63/9 0 13s} 20. Rxc6+ {+5.94/36 0 3.7s} bxc6
{-5.03/10 0 3.6s} 21. Qxe5+ {+6.23/34 0 5.5s} Bd6 {-4.82/9 0 7.6s} 22. Nxd6
{+6.23/35 0 5.8s} Qxd6 {-4.37/9 0 5.7s} 23. Qxh8 {+6.15/33 0 6.8s} Qd5
{-4.41/8 0 9.2s} 24. Bf4+ {+8.11/30 0 5.4s} Kb6 {-4.33/8 0 11s} 25. Bxc6
{+8.66/34 0 5.9s} Qxc6 {-3.73/10 0 11s} 26. Qd4+ {+8.81/32 0 5.0s <<<< White is winning a N down! <<<<} Ka6
{-4.10/10 0 12s} 27. Rd1 {+8.99/35 0 6.3s} Bxg4 {-4.32/10 0 8.5s} 28. Qd3+
{+21.37/29 0 5.2s} Kb7 {-5.43/10 0 10s} 29. Qb3+ {+87.33/42 0 5.1s} Kc8
{-5.50/10 0 8.8s} 30. Qg8+ {+M45/46 0 5.3s} Kb7 {-6.71/8 0 3.3s} 31. Qf7+
{+M39/58 0 5.2s} Kc8 {-7.97/7 0 19s} 32. Rd3 {+M31/67 0 15s} Be6 {-9.69/6 0
16s} 33. Qf8+ {+M23/74 0 4.8s} Kb7 {-7.90/7 0 5.0s} 34. Qe7+ {+M21/75 0
5.4s} Ka6 {-9.65/6 0 15s} 35. Rd6 {+M19/76 0 7.5s} Qb6 {-10.53/5 0 9.7s}
36. Qxe6 {+M17/83 0 5.3s} Re8 {-10.34/5 0 10s, White wins by adjudication} 1-0

[Event "Latvian 7|1 2Gh Sy.6"]
[Site "2700X 14 | 2060 140W"]
[Date "2--- 2020.07.25"]
[Round "1"]
[White "SfNNUEpavx2-200719-72505"]
[Black "Stockfish_20071720"]
[Result "1-0"]
[ECO "C41"]
[Opening "Philidor"]
[Variation "Lopez Countergambit"]
[TimeControl "420+1"]
[Termination "adjudication"]
[PlyCount "86"]
[WhiteType "human"]
[BlackType "human"]

1. e4 {book} e5 {book} 2. Nf3 {book} f5 {book} 3. Bc4 {book} d6 {book} 4.
d4 {+2.47/26 0 16s} Nc6 {-2.30/30 0 18s} 5. Ng5 {+2.58/25 0 5.5s} Nh6
{-2.00/27 0 3.0s} 6. d5 {+2.34/26 0 8.1s} Ne7 {-2.01/28 0 6.4s} 7. Nc3
{+2.57/25 0 6.5s} g6 {-2.00/28 0 5.0s} 8. h4 {+2.72/24 0 5.4s} Bg7
{-2.16/29 0 9.5s} 9. h5 {+2.72/24 0 5.6s} Neg8 {-2.15/30 0 19s} 10. Bd2
{+3.00/26 0 8.3s} Qe7 {-2.04/28 0 9.0s} 11. Qe2 {+2.92/29 0 22s} Nf6
{-1.96/33 0 45s} 12. O-O-O {+3.28/23 0 3.6s} a6 {-2.34/30 0 7.5s} 13. a4
{+3.20/28 0 7.5s} fxe4 {-2.26/28 0 7.5s} 14. hxg6 {+3.96/24 0 5.5s} hxg6
{-2.64/32 0 14s} 15. Ncxe4 {+4.00/26 0 9.8s} Nxe4 {-2.64/33 0 16s} 16. Nxe4
{+4.00/24 0 5.1s} Qf8 {-3.17/41 0 66s} 17. Kb1 {+4.23/26 0 4.7s} Bd7
{-3.56/32 0 14s} 18. a5 {+4.57/25 0 5.1s} Ng4 {-3.20/28 0 13s} 19. Rxh8
{+4.88/27 0 10s} Qxh8 {-3.33/30 0 6.4s} 20. Ng5 {+5.00/27 0 3.5s} Nf6
{-3.50/32 0 12s} 21. Bd3 {+5.36/26 0 6.2s} e4 {-3.90/34 0 19s} 22. Bxe4
{+6.62/25 0 7.8s} O-O-O {-4.09/32 0 4.2s} 23. Bxg6 {+6.60/25 0 5.8s} Nxd5
{-4.49/37 0 15s} 24. Qd3 {+7.09/24 0 5.8s} Ne7 {-4.44/34 0 2.8s} 25. Nf7
{+7.58/27 0 6.9s} Qf8 {-4.50/35 0 7.9s} 26. Nxd8 {+7.90/24 0 5.3s} Qf6
{-4.57/36 0 3.3s} 27. Bc3 {+8.25/29 0 5.4s} Qxg6 {-4.69/35 0 6.4s} 28. Qxg6
{+8.36/30 0 5.2s} Nxg6 {-4.67/34 0 3.0s} 29. Bxg7 {+8.48/32 0 5.5s} Kxd8
{-4.64/32 0 3.3s} 30. Bf6+ {+8.49/29 0 6.5s} Kc8 {-4.91/34 0 15s} 31. g3
{+9.05/25 0 5.4s} b6 {-5.39/32 0 6.2s} 32. axb6 {+9.47/28 0 5.3s} cxb6
{-5.75/32 0 6.8s} 33. Rxd6 {+9.79/27 0 6.5s} Kc7 {-5.57/28 0 2.8s} 34. Rd5
{+9.75/27 0 8.4s} Kc6 {-5.70/30 0 3.9s} 35. Rh5 {+10.35/26 0 6.1s} Nf8
{-5.77/31 0 4.2s} 36. f4 {+10.53/26 0 7.5s} Ne6 {-7.75/30 0 22s} 37. f5
{+10.56/25 0 5.9s} Nc5 {-7.94/27 0 4.0s} 38. g4 {+10.94/24 0 8.3s} b5
{-8.07/29 0 12s} 39. Bd8 {+11.35/24 0 5.4s} Ne4 {-8.78/27 0 4.2s} 40. b3
{+11.61/23 0 5.0s} Nd6 {-6.51/23 0 1.7s} 41. Rg5 {+11.79/25 0 6.2s} Ne8
{-7.81/27 0 5.5s} 42. Rg6+ {+12.15/24 0 4.6s} Kd5 {-12.22/29 0 12s} 43.
Rxa6 {+12.40/24 0 4.9s} Nd6 {-19.75/28 0 19s, White wins by adjudication} 1-0

Attachment: Latvian8main.pgn - Games (127k)
Parent - By MrKris (***) Date 2020-07-26 00:21
At first, Keres early 1970's, 3.Bc4 was thought to be good but then the stange exchange+pawn sacrifice 4...d5! was found.
(See the games with 7.Qxg6+!, N for pawns sacrifice, instead of the acceptance 7.Qxh8?! here.)
[Event "Latvian 7|1 2Gh Sy.6"]
[Site "2700X 14 | 2060 140W"]
[Date "2020.07.25"]
[Round "2"]
[White "Lc0.25.1_384x30J91-100"]
[Black "Stockfish_20071720"]
[Result "0-1"]
[BlackElo "2400"]
[ECO "C40"]
[Opening "Latvian Gambit"]
[Variation "Svedenborg, 6.Nxg6 hxg6"]
[WhiteElo "2400"]
[TimeControl "420+1"]
[Termination "normal"]
[PlyCount "89"]
[WhiteType "human"]
[BlackType "human"]

1. e4 {book} e5 {book} 2. Nf3 {book} f5 {book} 3. Bc4 {book} fxe4 {book} 4.
Nxe5 {book} d5 {book} 5. Qh5+ {book} g6 {book} 6. Nxg6 {book} hxg6 {book}
7. Qxh8 {book} Kf7 {book} 8. Bb3 {+0.06/13 0 6.6s} Bg7 {+0.48/30 0 12s} 9.
Qh7 {+0.02/17 0 4.5s} Be6 {+0.43/27 0 4.9s} 10. d4 {+0.02/17 0 6.6s} Nd7
{+0.57/30 0 11s} 11. g4 {+0.03/17 0 2.9s} c5 {+0.25/30 0 9.8s} 12. c3
{-0.02/17 0 7.7s} Ngf6 {+0.74/32 0 16s} 13. Qh4 {-0.13/18 0 14s} Qb6
{+0.78/32 0 4.7s} 14. Qg3 {-0.16/20 0 18s} Rh8 {+0.92/32 0 5.3s} 15. Nd2
{-0.06/16 0 21s} Bf8 {+1.18/33 0 16s} 16. g5 {-0.07/18 0 2.3s} Nh5
{+1.34/32 0 4.1s} 17. Qe3 {-0.07/17 0 5.1s} Ng7 {+1.18/37 0 8.3s} 18. Nxe4
{-0.07/17 0 7.9s} cxd4 {+1.09/37 0 6.3s} 19. Qf3+ {-0.34/19 0 12s} Nf5
{+0.95/35 0 17s} 20. Nf6 {-0.42/20 0 7.2s} Nh4 {+1.33/42 0 55s} 21. Qe2
{-0.45/17 0 14s} Ne5 {+0.79/41 0 9.6s} 22. Kd1 {-0.55/21 0 20s} Nhf3
{+0.97/40 0 5.8s} 23. h4 {-0.54/21 0 0.20s} Be7 {+1.13/40 0 4.8s -- a 2nd
pawn sacrificed! --} 24. Nxd5 {-0.45/16 0 12s} Qa5 {+1.44/37 0 6.2s Black with an advantage the exchange+2 pawns down.}
[FEN "7r/pp2bk2/4b1p1/q2Nn1P1/3p3P/1BP2n2/PP2QP2/R1BK3R w - - 1 25"]
25. Qe4 {-0.43/16 0 13s ?? --} (25. h5 {! Honey-NN 2 mins. 41/74 -0.68} Bxd5 26.
hxg6+ Kg7 27. Rxh8 Kxh8 28. Bxd5 Qxd5 29. c4 Qc6 30. Bf4 Nxg6 31. Bg3 {etc.
--}) 25. .. dxc3 {+2.68/28 0 4.6s} 26. Kc2 {-0.74/14 0 8.1s} Rd8 {+3.04/32
0 9.0s} 27. bxc3 {-1.58/15 0 22s} Rxd5 {+4.08/30 0 4.3s} 28. Rd1 {-1.73/14
0 4.3s} Rc5 {+4.87/32 0 5.0s} 29. Bb2 {-1.76/16 0 7.9s} Rc4 {+5.49/30 0
4.5s} 30. Bxc4 {-1.87/12 0 5.4s} Bxc4 {+5.85/31 0 5.3s} 31. Kc1 {-2.28/11 0
24s} Qb6 {+5.93/31 0 4.2s} 32. a4 {-2.47/11 0 7.9s} a5 {+5.97/32 0 4.6s}
33. Qf4+ {-2.83/11 0 13s} Ke8 {+7.37/32 0 4.1s} 34. Qe4 {-3.23/10 0 6.9s}
Qxf2 {+10.97/28 0 4.7s} 35. Ba3 {-3.37/10 0 5.2s} Bb3 {+12.59/29 0 4.2s}
36. Rd7 {-3.75/10 0 15s} Bxa3+ {+20.94/29 0 5.7s} 37. Rxa3 {-4.23/10 0
2.2s} Qf1+ {+64.76/37 0 4.3s} 38. Kb2 {-4.84/10 0 6.3s} Be6 {+72.84/39 0
5.3s} 39. Rd5 {-5.10/9 0 13s} Nc4+ {+M19/79 0 4.1s} 40. Kc2 {-6.21/8 0 13s}
Ne1+ {+M15/95 0 4.0s} 41. Kb3 {-7.26/8 0 13s} Nd2+ {+M13/157 0 4.2s} 42.
Ka2 {-8.93/7 0 11s} Nxe4 {+M11/182 0 5.0s} 43. c4 {-9.95/5 0 11s} Qxc4+
{+M7/245 0 0.24s} 44. Ka1 {-M6/2 0 8.9s} Qc1+ {+M5/245 0 0.057s} 45. Ka2
{-M4/1 0 0.001s, Black wins by adjudication} 0-1
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