TalkChess.com

I have detected a curious maneuver of knights in g5 and h5 by lc0 in two games of a test that I am doing. In both cases the maneuver leds to a winning attack.

The test compares lc0 with AlphaZero against Stockfish 8 without opening book.
Lc0 version 0.19 rc2 with net 11261 on Asus Geforce GTX 1060 3 Gb tc=1500+10 (secs) against Stockfish 8 on i7 4790S 6 logical cores tc=710+4.73 (secs)

with LeR=1, ponder Off, Hash tables 1 Gb. under Cutechess cli. Turbo Boost disabled to avoid speed variations due to other processes.

In the first game, the evolution of the knight throughout the game is very beautiful and devastating.

[pgn] [Event "Lc019rc2Sf8Initial25plus10LeR1_i7_4790S"] [Site "Ros_4790S"] [Date "2018.11.07"] [Round "23"] [White "Lc019rc2_11261"] [Black "Stockfish8"] [Result "*"] [BlackElo "2000"] [Time "23:44:49"] [WhiteElo "2000"] [TimeControl "1500+10"] [SetUp "1"] [FEN "1r3r1k/3bqpp1/pn2p2p/n1ppP1NN/3P1P1P/2PQ4/P3B1P1/2R2RK1 b - - 12 1"] [Termination "unterminated"] [PlyCount "0"] [WhiteType "program"] [BlackType "human"] 1. ... * [/pgn]

[pgn] [Event "Lc019rc2Sf8Initial25plus10LeR1_i7_4790S"] [Site "Ros_4790S"] [Date "2018.11.08"] [Round "43"] [White "Lc019rc2_11261"] [Black "Stockfish8"] [Result "1-0"] [ECO "C13"] [Opening "French"] [Variation "Chatard-Alekhine Attack, 5.e5 Nfd7"] [TimeControl "1500+10"] [Termination "adjudication"] [PlyCount "130"] [WhiteType "human"] [BlackType "human"] 1. d4 {+0.22/9 30s} e6 {-0.08/27 55s} 2. e4 {+0.30/13 41s} d5 {-0.08/25 12s} 3. Nc3 {+0.30/15 11s} Nf6 {0.00/28 22s} 4. Bg5 {+0.30/15 17s} Be7 {-0.12/27 33s} 5. e5 {+0.45/15 36s} Nfd7 {-0.23/28 21s} 6. h4 {+0.38/15 24s} h6 {-0.09/25 10s} 7. Bxe7 {+0.40/15 44s} Qxe7 {-0.20/29 25s} 8. f4 {+0.41/15 14s} a6 {-0.11/27 13s} 9. Nf3 {+0.44/15 42s} c5 {-0.16/25 2.5s} 10. Qd2 {+0.45/14 7.0s} Nc6 {-0.08/27 20s} 11. Ne2 {+0.46/12 21s} b5 {-0.17/29 42s} 12. c3 {+0.47/11 56s} b4 {0.00/23 8.9s} 13. Rc1 {+0.42/13 109s} bxc3 {-0.01/26 17s} 14. bxc3 {+0.40/15 10s} Rb8 {0.00/27 15s} 15. Ng3 {+0.36/13 26s} O-O {0.00/31 13s} 16. Be2 {+0.34/13 21s} Nb6 {0.00/29 21s} 17. O-O {+0.47/13 76s} Na5 {0.00/29 21s} 18. Nh5 {+1.01/12 60s} Kh8 {-0.04/27 36s} 19. Ng5 {+1.12/14 91s} Bd7 {+0.66/24 11s} 20. Qd3 {+0.90/13 35s} g6 {-0.04/28 60s} 21. Nf6 {+0.92/16 8.8s} Bb5 {0.00/27 12s} 22. Qd2 {+0.80/14 39s} Nbc4 {0.00/25 22s} 23. Qe1 {+0.30/13 45s} hxg5 {-0.13/27 27s} 24. fxg5 {+0.42/14 24s} Kg7 {-0.16/28 18s} 25. h5 {+0.49/18 23s} cxd4 {-0.25/29 40s} 26. Qh4 {+1.26/15 37s} Rh8 {-0.10/27 15s} 27. cxd4 {+1.33/14 13s} Qa7 {-0.94/28 93s} 28. Qf2 {+1.73/14 38s} Rhd8 {-1.62/28 76s} 29. hxg6 {+2.51/17 52s} fxg6 {-3.22/27 13s} 30. Rc3 {+2.60/20 18s} Qe7 {-2.70/27 2.0s} 31. Rf3 {+2.70/19 17s} Rf8 {-2.40/29 6.7s} 32. Bd3 {+2.88/17 20s} Nxe5 {-3.41/29 12s} 33. dxe5 {+2.94/19 14s} Bxd3 {-3.01/26 1.2s} 34. Rxd3 {+3.14/15 49s} Nc4 {-3.97/33 43s} 35. Qd4 {+3.18/15 34s} Rbc8 {-2.52/26 3.4s} 36. Rh3 {+4.64/20 53s} Rh8 {-2.61/27 1.6s} 37. Nxd5 {+4.69/24 20s} Qc5 {-1.37/27 3.3s} 38. Qxc5 {+4.79/22 15s} Rxc5 {-1.28/24 1.1s} 39. Nf4 {+4.71/23 14s} Re8 {-1.64/31 15s} 40. Rc1 {+5.42/18 44s} Rc6 {-1.86/31 11s} 41. Rh6 {+5.47/20 20s} Nxe5 {-2.07/26 1.4s} 42. Rxc6 {+5.46/21 20s} Nxc6 {-1.90/29 3.9s} 43. Rxg6+ {+5.51/18 11s} Kf7 {-1.77/26 1.0s} 44. Rf6+ {+5.55/18 19s} Kg8 {-1.77/31 6.3s} 45. Nh5 {+5.63/20 20s} Ne5 {-1.61/24 3.6s} 46. g6 {+7.35/12 68s} a5 {-4.31/30 24s} 47. Kh2 {+8.55/13 55s} Re7 {-4.96/28 9.9s} 48. Kg3 {+8.76/13 25s} Nd7 {-5.27/29 8.8s} 49. Rf1 {+9.37/13 32s} Nf8 {-5.48/28 4.7s} 50. g7 {+10.37/12 37s} Nh7 {-5.73/29 4.7s} 51. Rc1 {+10.87/12 28s} Nf6 {-5.92/30 4.7s} 52. Rc8+ {+12.42/11 86s} Kh7 {-5.93/25 0.85s} 53. Nxf6+ {+12.46/10 11s} Kxg7 {-6.08/31 8.6s} 54. Ne4 {+12.64/8 17s} Rb7 {-5.71/26 3.5s} 55. Ra8 {+13.74/8 40s} Rb4 {-6.10/27 5.9s} 56. Nc5 {+14.37/8 31s} e5 {-6.27/29 4.7s} 57. Rxa5 {+15.50/7 36s} Rc4 {-6.45/31 4.7s} 58. a4 {+15.51/7 61s} Kf7 {-6.60/29 4.7s} 59. Kf3 {+16.48/7 27s} Rc3+ {-7.04/23 4.7s} 60. Ke4 {+17.41/7 22s} Kf6 {-8.43/24 4.7s} 61. Kd5 {+17.04/7 30s} Kf5 {-11.16/24 4.7s} 62. Ra8 {+18.59/7 18s} e4 {-16.01/27 4.7s} 63. Nxe4 {+20.11/7 18s} Rd3+ {-42.58/25 4.7s} 64. Kc4 {+18.95/7 19s} Rd1 {-56.16/26 4.7s} 65. Nc3 {+21.17/6 22s} Rg1 {-40.60/24 4.7s, White wins by adjudication} 1-0 [/pgn]



[pgn] [Event "Lc019rc2Sf8Initial25plus10LeR1_i7_4790S"] [Site "Ros_4790S"] [Date "2018.11.07"] [Round "23"] [White "Lc019rc2_11261"] [Black "Stockfish8"] [Result "*"] [BlackElo "2000"] [Time "23:40:26"] [WhiteElo "2000"] [TimeControl "1500+10"] [SetUp "1"] [FEN "1rb3rk/4qpp1/p3p2p/n2pP1NN/2nP1P1P/6Q1/P3B1P1/2R2RK1 b - - 6 1"] [Termination "unterminated"] [PlyCount "0"] [WhiteType "program"] [BlackType "human"] 1. ... * [/pgn]

[pgn] [Event "Lc019rc2Sf8Initial25plus10LeR1_i7_4790S"] [Site "Ros_4790S"] [Date "2018.11.07"] [Round "23"] [White "Lc019rc2_11261"] [Black "Stockfish8"] [Result "1-0"] [ECO "C13"] [Opening "French"] [Variation "Chatard-Alekhine Attack, 5.e5 Nfd7"] [TimeControl "1500+10"] [Termination "adjudication"] [PlyCount "100"] [WhiteType "human"] [BlackType "human"] 1. d4 {+0.22/9 30s} e6 {-0.06/28 100s} 2. e4 {+0.30/13 42s} d5 {-0.11/27 20s} 3. Nc3 {+0.30/15 11s} Nf6 {-0.13/27 12s} 4. Bg5 {+0.30/15 16s} Be7 {-0.14/27 13s} 5. e5 {+0.47/15 36s} Nfd7 {-0.13/28 5.0s} 6. h4 {+0.40/15 22s} h6 {-0.09/25 31s} 7. Bxe7 {+0.40/15 49s} Qxe7 {-0.13/29 18s} 8. f4 {+0.41/15 8.9s} a6 {-0.15/26 5.2s} 9. Nf3 {+0.44/15 42s} c5 {-0.05/28 17s} 10. Qd2 {+0.45/14 8.7s} Nc6 {-0.06/27 16s} 11. Ne2 {+0.46/12 23s} b5 {-0.12/25 2.5s} 12. c3 {+0.46/11 55s} b4 {+0.03/24 18s} 13. Rc1 {+0.40/14 113s} bxc3 {+0.09/26 20s} 14. bxc3 {+0.38/15 7.9s} Rb8 {0.00/28 62s} 15. Ng3 {+0.36/13 24s} O-O {0.00/33 16s} 16. Be2 {+0.35/13 23s} Nb6 {0.00/26 16s} 17. O-O {+0.44/13 80s} Na5 {-0.02/25 11s} 18. Nh5 {+1.06/12 58s} cxd4 {0.00/26 19s} 19. cxd4 {+0.73/12 75s} Nbc4 {-0.05/28 41s} 20. Qe1 {+0.66/13 14s} Kh8 {0.00/29 12s} 21. Qg3 {+0.86/16 74s} Rg8 {+0.39/26 8.3s} 22. Ng5 {+0.88/23 4.0s} f5 {-0.68/27 45s} 23. exf6 {+2.49/17 36s} gxf6 {-0.89/31 25s} 24. f5 {+2.61/16 15s} Rb6 {-0.93/27 2.7s} 25. Nf4 {+2.78/19 36s} fxg5 {-2.29/28 73s} 26. Ng6+ {+2.90/24 22s} Rxg6 {-2.47/25 2.0s} 27. fxg6 {+2.98/24 19s} gxh4 {-2.66/31 23s} 28. Qg4 {+3.15/24 20s} Qg5 {-3.04/27 2.8s} 29. Qxg5 {+3.31/25 27s} hxg5 {-1.58/27 6.3s} 30. Rf8+ {+3.33/24 6.3s} Kg7 {-1.58/1 0s} 31. Rxc8 {+3.42/22 13s} Nd6 {-1.40/28 10s} 32. R8c5 {+5.90/15 70s} Nac4 {-2.29/29 26s} 33. Bd3 {+6.13/15 28s} Kh6 {-2.40/26 2.2s} 34. Rb1 {+8.03/12 61s} Rxb1+ {-2.35/26 11s} 35. Bxb1 {+7.83/13 29s} g4 {-3.23/32 50s} 36. Rc6 {+7.90/14 55s} a5 {-3.01/33 15s} 37. a4 {+8.11/14 29s} Kg7 {-2.91/27 12s} 38. Kh2 {+8.58/10 66s} Kh6 {-3.35/35 23s} 39. Ra6 {+8.73/11 37s} Nf5 {-5.14/30 40s} 40. Rxe6 {+10.37/10 38s} Ng7 {-5.91/31 16s} 41. Re7 {+10.29/11 26s} Nd2 {-5.14/27 3.5s} 42. Bd3 {+11.24/9 42s} Nb3 {-5.79/29 13s} 43. Re5 {+12.21/10 30s} Nc1 {-6.09/28 15s} 44. Bb1 {+13.47/9 45s} Nb3 {-7.83/30 11s} 45. Rxd5 {+14.04/9 20s} Ne6 {-8.61/31 15s} 46. Rd7 {+14.23/8 42s} Ng7 {-9.31/29 12s} 47. d5 {+15.88/7 38s} Nd4 {-13.23/26 6.2s} 48. d6 {+16.94/7 47s} g3+ {-13.83/27 4.7s} 49. Kh1 {+17.44/7 26s} h3 {-29.08/24 4.7s} 50. gxh3 {+19.19/7 26s} Ndf5 {-55.35/30 4.7s, White wins by adjudication} 1-0 [/pgn]

The same at g4 h4!! at move 34
and knights in h4 h5 at move 20


[pgn][Event "Lc019rc2Sf8Initial25plus10LeR1_i7_4790S"] [Site "Ros_4790S"] [Date "2018.11.07"] [Round "28"] [White "Stockfish8"] [Black "Lc019rc2_11261"] [Result "*"] [BlackElo "2000"] [Time "09:42:30"] [WhiteElo "2000"] [TimeControl "1500+10"] [SetUp "1"] [FEN "1r3r1k/3b3p/p2p3q/N1pPp3/2P1Ppnn/2P2B2/R5PP/R3B1QK w - - 3 1"] [Termination "unterminated"] [PlyCount "0"] [WhiteType "human"] [BlackType "human"] * [/pgn]


[pgn] [Event "Lc019rc2Sf8Initial25plus10LeR1_i7_4790S"] [Site "Ros_4790S"] [Date "2018.11.07"] [Round "28"] [White "Stockfish8"] [Black "Lc019rc2_11261"] [Result "0-1"] [ECO "E50"] [Opening "Nimzo-Indian"] [Variation "4.e3 O-O 5.Nf3 c5 6.Bd3"] [TimeControl "1500+10"] [Termination "adjudication"] [PlyCount "147"] [WhiteType "human"] [BlackType "human"] 1. d4 {+0.20/26 25s} Nf6 {-0.19/10 24s} 2. c4 {+0.31/26 19s} e6 {-0.20/11 19s} 3. Nc3 {+0.08/27 82s} Bb4 {-0.21/11 52s} 4. e3 {+0.10/25 28s} O-O {-0.14/10 31s} 5. Be2 {+0.08/28 48s} c5 {-0.03/10 37s} 6. Nf3 {+0.12/26 16s} Nc6 {-0.03/12 58s} 7. O-O {+0.18/27 21s} Bxc3 {-0.01/14 16s} 8. bxc3 {+0.18/26 21s} d6 {0.00/13 16s} 9. Nd2 {+0.09/28 17s} b6 {+0.09/9 49s} 10. Bb2 {+0.16/26 30s} e5 {+0.16/9 42s} 11. Bd3 {+0.16/27 40s} Re8 {+0.17/10 60s} 12. d5 {+0.16/31 14s} Ne7 {+0.15/9 39s} 13. Qc2 {+0.12/29 13s} Ng6 {+0.19/10 32s} 14. Rfe1 {+0.21/27 20s} Qe7 {+0.39/9 42s} 15. f3 {+0.01/32 32s} Rf8 {+0.39/10 25s} 16. a4 {0.00/27 25s} Nh5 {+0.83/10 38s} 17. a5 {0.00/28 9.6s} bxa5 {+0.98/10 38s} 18. Nb3 {+0.06/30 42s} a4 {+1.14/11 43s} 19. Rxa4 {+0.25/27 7.3s} f5 {+1.36/12 31s} 20. Bf1 {+0.22/30 14s} Nh4 {+1.41/11 20s} 21. Qf2 {+0.23/30 30s} g5 {+1.45/10 26s} 22. Na5 {0.00/27 20s} Kh8 {+1.49/10 108s} 23. Nc6 {+0.76/19 6.8s} Qg7 {+1.50/11 8.3s} 24. Rea1 {+0.76/25 49s} a6 {+1.64/11 33s} 25. Bc1 {0.00/25 27s} Nf6 {+1.76/10 31s} 26. R4a2 {+0.15/24 13s} Qh6 {+1.81/12 38s} 27. Bd2 {0.00/27 20s} Ng6 {+1.80/12 42s} 28. Be2 {0.00/29 33s} g4 {+1.96/12 33s} 29. Be1 {-0.27/28 16s} gxf3 {+2.10/14 23s} 30. Bxf3 {-0.62/25 17s} Bd7 {+2.22/15 12s} 31. Na5 {-1.00/27 47s} Rab8 {+2.80/12 43s} 32. Kh1 {-0.27/25 4.1s} f4 {+2.80/15 33s} 33. e4 {-0.78/28 14s} Ng4 {+2.82/16 26s} 34. Qg1 {-0.93/30 10s} Nh4 {+2.92/16 15s} 35. Bxh4 {-0.88/30 8.6s} Qxh4 {+2.95/15 21s} 36. Nc6 {-0.95/25 1.8s} Rbe8 {+2.96/15 1.7s} 37. Na7 {-1.01/30 23s} Rf6 {+3.81/12 68s} 38. Rb2 {-1.74/27 17s} a5 {+4.66/11 53s} 39. Nc6 {-1.54/22 4.2s} a4 {+4.69/11 35s} 40. Bxg4 {-1.94/24 9.3s} Qxg4 {+4.87/12 43s} 41. Rf2 {-2.38/25 4.7s} Ra8 {+5.31/9 37s} 42. Ra3 {-2.48/25 4.7s} Qh5 {+6.05/9 83s} 43. Ra1 {-3.39/25 4.7s} Bg4 {+6.17/9 18s} 44. Qb1 {-2.84/24 2.3s} a3 {+6.24/9 29s} 45. Ne7 {-3.18/26 7.0s} Qh4 {+6.85/11 30s} 46. Qg1 {-3.48/27 4.9s} f3 {+7.87/12 31s} 47. Nf5 {-3.69/30 4.7s} Bxf5 {+8.42/12 17s} 48. exf5 {-4.20/30 4.7s} Rxf5 {+8.57/11 13s} 49. Rxf3 {-4.54/30 4.7s} Rxf3 {+9.95/12 29s} 50. gxf3 {-4.85/32 4.7s} Qxc4 {+10.44/11 14s} 51. Qg5 {-4.98/27 0.75s} Qf4 {+11.06/11 21s} 52. Qxf4 {-5.66/32 8.7s} exf4 {+15.07/8 33s} 53. Kg2 {-5.86/32 4.7s} Kg7 {+15.91/8 28s} 54. Kf2 {-6.94/31 4.7s} Kf6 {+17.05/8 32s} 55. Ke2 {-7.35/32 4.7s} Ke5 {+17.65/8 29s} 56. Kd3 {-5.84/27 4.4s} Kxd5 {+18.48/8 25s} 57. c4+ {-6.08/24 0.69s} Ke5 {+18.05/8 33s} 58. Ra2 {-5.01/29 2.9s} Ra5 {+18.46/7 50s} 59. Re2+ {-6.31/30 7.0s} Kf5 {+18.73/8 30s} 60. Ra2 {-6.40/30 0.86s} Ke5 {+18.27/8 23s} 61. Re2+ {0.00/125 2.4s} Kf5 {+17.96/8 19s} 62. Ra2 {0.00/126 6.2s} h5 {+17.38/8 26s} 63. Kc2 {-7.14/30 12s} Ke5 {+18.53/7 18s} 64. Kc3 {-7.25/31 6.2s} h4 {+18.71/7 22s} 65. Kd3 {-6.14/26 1.9s} h3 {+19.59/7 26s} 66. Kc3 {-11.07/30 7.6s} Ra6 {+18.79/7 23s} 67. Re2+ {-13.57/31 4.7s} Kf5 {+15.39/9 15s} 68. Ra2 {-14.35/29 4.7s} Ke5 {+17.97/7 11s} 69. Re2+ {0.00/127 0.85s} Kf6 {+14.79/9 11s} 70. Ra2 {-16.91/31 8.6s} Ra7 {+16.35/7 11s} 71. Kd2 {-18.11/30 4.7s} Ke5 {+18.24/7 9.8s} 72. Kc3 {-18.88/31 4.7s} Ra8 {+17.66/7 10s} 73. Kd3 {-17.90/29 4.7s} Kf5 {+18.22/7 9.9s} 74. Kd2 {-21.03/31 4.7s, Black wins by adjudication} 0-1 [/pgn]

I have long held a theory in my own personal over-the-board human chess which I haven't seen in a any chess book: that there is an advantage of having two knights side by side, especially if near the opponent's king.

Knights often make each other redundant, but when they are side by side, they don't.

Werewolf wrote: ↑Sat Nov 10, 2018 12:53 pm I have long held a theory in my own personal over-the-board human chess which I haven't seen in a any chess book: that there is an advantage of having two knights side by side, especially if near the opponent's king.

Knights often make each other redundant, but when they are side by side, they don't.

In Megabase 2018 there are 4044 games with knights at g5 h5 with the following stats:

in 2343 games White won
606 games draw
in 1095 games Black won
White performance 2206
Black performance 2013

there are 2416 games with knights at g4 h4 with the following stats:

in 796 games White won
436 games draw
in 1184 games Black won
White performance 2113
Black performance 2209

The statistics corroborate your theory

Javier Ros wrote: ↑Sat Nov 10, 2018 4:36 pm ...
The statistics corroborate your theory

Very interesting !

But now I wonder, and why didn't I think of this before ? --->

In the famed 10 released games AlphaZero vs. SF8, a few remarkable moves by AlphaZero were found and analysed.

Does Lc0 now find any of these moves ?

ernest wrote: ↑Sun Nov 11, 2018 1:37 am

Javier Ros wrote: ↑Sat Nov 10, 2018 4:36 pm ...
The statistics corroborate your theory

Very interesting !

But now I wonder, and why didn't I think of this before ? --->

In the famed 10 released games AlphaZero vs. SF8, a few remarkable moves by AlphaZero were found and analysed.

Does Lc0 now find any of these moves ?

Well, Alpha0 had an impact and attention in the media that lc0 has not had and I guess that few people have analyzed lc0 games.

For example the famous thorn pawns have appeared in lots of lc0 games

https://www.youtube.com/watch?v=Njzq0sR229c

https://www.youtube.com/watch?v=TxPpP_Tz2lA

and Alphazero, see 42.h6 in the following game

[pgn][Event ""] [White "AlphaZero"] [Black "Stockfish"] [Site ""] [Round ""] [Annotator ""] [Result "1-0"] [Date "2017.12.01"] [PlyCount "119"] 1. Nf3 Nf6 2. c4 b6 3. d4 e6 4. g3 Ba6 5. Qc2 c5 6. d5 exd5 7. cxd5 Bb7 8. Bg2 Nxd5 9. 0-0 Nc6 10. Rd1 Be7 11. Qf5 Nf6 12. e4 g6 13. Qf4 0-0 14. e5 Nh5 15. Qg4 Re8 16. Nc3 Qb8 17. Nd5 Bf8 18. Bf4 Qc8 19. h3 Ne7 20. Ne3 Bc6 21. Rd6 Ng7 22. Rf6 Qb7 23. Bh6 Nd5 24. Nxd5 Bxd5 25. Rd1 Ne6 26. Bxf8 Rxf8 27. Qh4 Bc6 28. Qh6 Rae8 29. Rd6 Bxf3 30. Bxf3 Qa6 31. h4 Qa5 32. Rd1 c4 33. Rd5 Qe1+ 34. Kg2 c3 35. bxc3 Qxc3 36. h5 Re7 37. Bd1 Qe1 38. Bb3 Rd8 39. Rf3 Qe4 40. Qd2 Qg4 41. Bd1 Qe4 42. h6 Nc7 43. Rd6 Ne6 44. Bb3 Qxe5 45. Rd5 Qh8 46. Qb4 Nc5 47. Rxc5 bxc5 48. Qh4 Rde8 49. Rf6 Rf8 50. Qf4 a5 51. g4 d5 52. Bxd5 Rd7 53. Bc4 a4 54. g5 a3 55. Qf3 Rc7 56. Qxa3 Qxf6 57. gxf6 Rfc8 58. Qd3 Rf8 59. Qd6 Rfc8 60. a4 1-0[/pgn]

Another example are the holes at d6 f6 occupied by Queen and Rook, see the above game

[pgn][Event ""] [White "AlphaZero"] [Black "Stockfish"] [Site ""] [Round ""] [Result "*"] [BlackElo "2000"] [Time "10:33:28"] [WhiteElo "2000"] [TimeControl "1500+10"] [SetUp "1"] [FEN "4rrk1/pq1p1p1p/1pbRnRpQ/2p1P3/8/5NPP/PP3PB1/6K1 b - - 5 1"] [Termination "unterminated"] [PlyCount "0"] [WhiteType "program"] [BlackType "human"] 1. ... * [/pgn]



and

[pgn][Event "Lc019rc2Sf8Initial25plus10LeR1_i7_4790S"] [Site "Ros_4790S"] [Date "2018.11.06"] [Round "17"] [White "Lc019rc2_11261"] [Black "Stockfish8"] [Result "*"] [BlackElo "2000"] [Time "09:40:04"] [WhiteElo "2000"] [TimeControl "1500+10"] [SetUp "1"] [FEN "r3b1kr/1pq1np2/3RpQp1/2PpP2p/p2B1P1P/2PB4/2P3P1/R1K5 b - - 5 24"] [Termination "unterminated"] [PlyCount "0"] [WhiteType "program"] [BlackType "human"] 24. ... * [/pgn]

[pgn][Event "Lc019rc2Sf8Initial25plus10LeR1_i7_4790S"] [Site "Ros_4790S"] [Date "2018.11.06"] [Round "17"] [White "Lc019rc2_11261"] [Black "Stockfish8"] [Result "1-0"] [ECO "C12"] [Opening "French"] [Variation "MacCutcheon, Janowski Variation, 5.e5 h6 6.Be3"] [TimeControl "1500+10"] [Termination "adjudication"] [PlyCount "114"] [WhiteType "human"] [BlackType "human"] 1. d4 {+0.22/9 30s} e6 {-0.20/27 30s} 2. e4 {+0.30/13 43s} d5 {-0.04/25 9.2s} 3. Nc3 {+0.30/15 9.7s} Nf6 {-0.03/26 19s} 4. Bg5 {+0.30/15 16s} Bb4 {-0.12/26 25s} 5. e5 {+0.40/17 36s} h6 {-0.06/27 16s} 6. Be3 {+0.36/18 46s} Ne4 {+0.04/26 12s} 7. Qg4 {+0.34/26 10s} Kf8 {+0.23/27 13s} 8. Ne2 {+0.38/19 53s} c5 {+0.29/27 13s} 9. dxc5 {+0.39/23 27s} Qa5 {0.00/29 43s} 10. O-O-O {+0.40/22 31s} Bxc3 {0.00/32 16s} 11. Nxc3 {+0.43/21 19s} Nxc3 {0.00/33 16s} 12. bxc3 {+0.44/19 15s} Nc6 {0.00/31 2.7s} 13. Kd2 {+0.45/18 19s} Qxa2 {0.00/33 19s} 14. Bd4 {+0.85/12 75s} Qa5 {0.00/32 14s} 15. Bd3 {+0.88/13 28s} Qc7 {0.00/30 2.7s} 16. f4 {+0.94/15 29s} a5 {+0.07/32 36s} 17. Ra1 {+0.95/14 26s} a4 {0.00/32 7.2s} 18. Rhb1 {+1.01/13 29s} Bd7 {0.00/34 31s} 19. h4 {+1.05/19 52s} h5 {0.00/30 32s} 20. Qg5 {+1.00/27 20s} Be8 {0.00/30 6.8s} 21. Rb6 {+1.24/14 130s} g6 {-0.29/30 65s} 22. Kc1 {+1.29/12 8.4s} Ne7 {0.00/31 9.1s} 23. Qf6 {+1.21/15 53s} Kg8 {0.00/33 3.7s} 24. Rd6 {+1.17/15 24s} Rh7 {+0.10/33 8.5s} 25. Kb2 {+1.11/15 82s} Nf5 {+0.10/30 14s} 26. Ka2 {+1.06/14 72s} Ng7 {0.00/35 23s} 27. Qg5 {+1.91/10 49s} Kf8 {-0.60/34 68s} 28. Rh1 {+1.77/15 57s} Rc8 {-0.86/32 112s} 29. g3 {+1.80/17 31s} Bc6 {-0.87/31 66s} 30. g4 {+3.16/17 22s} hxg4 {-2.07/29 21s} 31. h5 {+3.46/15 24s} Re8 {-2.18/30 19s} 32. h6 {+3.42/17 26s} Nf5 {-2.46/32 16s} 33. Qxg4 {+3.50/15 18s} Rxh6 {-2.64/28 3.1s} 34. Rxh6 {+4.47/17 32s} Nxh6 {-2.54/33 5.6s} 35. Qh4 {+4.72/17 16s} Kg7 {-2.52/31 1.4s} 36. f5 {+4.91/17 21s} Nxf5 {-2.52/34 8.7s} 37. Bxf5 {+5.02/16 15s} Qe7 {-2.47/31 1.6s} 38. Qxe7 {+5.56/14 24s} Rxe7 {-2.86/34 26s} 39. Bg4 {+5.83/12 17s} Kh6 {-2.84/31 18s} 40. Bf3 {+7.78/13 47s} Rc7 {-3.74/30 12s} 41. c4 {+9.37/13 43s} dxc4 {-4.66/32 17s} 42. Bxc6 {+9.81/15 25s} bxc6 {-4.81/38 19s} 43. Ka3 {+10.17/14 18s} g5 {-4.92/31 5.8s} 44. Kxa4 {+10.45/13 22s} Ra7+ {-5.02/32 1.2s} 45. Kb4 {+10.18/13 0.068s} Ra6 {-5.02/40 4.7s} 46. Kxc4 {+10.48/11 35s} Kg6 {-5.16/37 7.0s} 47. Kd3 {+11.86/10 49s} Kh7 {-5.31/36 10s} 48. c3 {+13.63/8 65s} Kg7 {-5.45/35 5.1s} 49. Ke4 {+14.28/8 46s} Kg6 {-5.53/41 4.7s} 50. Rd7 {+14.46/9 40s} Ra1 {-5.67/36 4.7s} 51. Rc7 {+15.83/9 26s} Ra6 {-5.77/32 1.2s} 52. Kf3 {+16.25/8 30s} Kg7 {-7.81/32 8.3s} 53. Kg3 {+16.59/8 45s} Kg6 {-9.27/28 4.7s} 54. Kg4 {+17.11/8 17s} Ra4 {-10.33/27 4.7s} 55. Rxc6 {+16.74/8 24s} Rc4 {-11.79/27 4.7s} 56. Rd6 {+18.01/8 42s} Ra4 {-13.07/28 4.7s} 57. Kf3 {+19.41/7 35s} Kf5 {-15.91/26 4.7s, White wins by adjudication} 1-0 [/pgn]



And some positions that have reminded me a lot of AlphaZero style, of the type enclosed pieces, blocking and zugzwang:

[pgn] [Date "2018.08.24"] [White "lco"] [Black "Stockfish 7"] [Result "1-0"] [SetUp "1"] [FEN "R1b3k1/2q2p1r/4pQpP/3pP1B1/3P4/8/2p2PP1/6K1 w - - 0 37"] [PlyCount "0"] 1-0 [/pgn]

[pgn][Event "?"] [Site "?"] [Date "2018.08.24"] [Round "?"] [White "lc0"] [Black "Stockfish 8"] [Result "1-0"] [SetUp "1"] [FEN "6k1/5ppr/1pb4p/p2p3P/8/2RR4/2Q3P1/4q1K1 w - - 0 35"] [PlyCount "0"] 1-0 [/pgn]

[pgn][Event "?"] [Site "?"] [Date "2018.08.24"] [Round "?"] [White "lc0"] [Black "Komodo 10"] [Result "1-0"] [SetUp "1"] [FEN "4k3/1RRbr1p1/4p3/p2pPp1P/1p3P2/8/5K2/8 b - - 0 42"] [PlyCount "0"] 1-0 [/pgn]