It's currently in alpha stage (not downloadable yet) and I prefer some feedback for improvements, more ideas before a beta release.
Functions:
1. Suspect opening lines overview
2. Crazy games (incompatible scores)
3. Games that should have been won
4. Drop in score (horizon effects mostly)
5. Double opening detector
6. Lost games analysis
Examples:
1. Suspect opening lines overview
[pgn][Event ""]
[Site ""]
[Date "2020.02.04"]
[Round "675"]
[White "Stockfish_8"]
[Black "Komodo_10"]
[Result "0-1"]
{Bad opening line for Stockfish_8 in game 675, start score -2.85, game lost. }1. e4 {book} e6 {book} 2. Nc3 {book} d5 {book} 3. exd5 {book} exd5 {book} 4. Qe2+ {book} Be7 {book} 5. d4 {book} Nf6 {book} 6. Nf3 {book} O-O {book} 7. b3 {book} Bb4 {book} 8. Bb2 {book} Re8 {book} 9. Ne5 {-2.85/21 3.8s} Ne4 {+2.85/17 2.0s} 10. Qe3 {-2.87/19 0.36s} c5 {+3.07/19 3.5s} 11. O-O-O {-3.47/22 4.0s} cxd4 {+3.12/19 2.7s} 12. Qxd4 {-3.46/20 0.60s} Qg5+ {+2.79/20 3.3s} 13. Kb1 {-3.20/23 1.8s} Nxc3+ {+2.83/21 3.5s} 14. Bxc3 {-3.48/20 0.35s} Bxc3 {+3.11/21 2.1s} 15. Qxc3 {-3.56/23 3.1s} Qxe5 {+3.06/22 2.1s} 16. Qxe5 {-3.62/18 0.47s} Rxe5 {+3.02/21 0.76s} 17. Bb5 {-3.62/23 6.7s} Nc6 {+3.26/21 2.2s} 18. f4 {-3.47/19 0.33s} Re4 {+3.30/21 1.2s} 19. Rxd5 {-3.77/22 4.6s} Be6 {+3.28/20 1.2s} 20. Bxc6 {-3.74/23 5.6s} bxc6 {+3.21/21 1.5s} 21. Rd3 {-3.78/22 8.4s} Rxf4 {+3.71/18 1.6s} 22. g3 {-3.86/21 7.3s} Rf2 {+3.83/19 1.5s} 23. Rhd1 {-3.82/22 1.7s} Kf8 {+4.03/20 2.3s} 24. R1d2 {-3.86/19 0.29s} Rxd2 {+3.94/22 0.99s} 25. Rxd2 {-3.86/23 2.2s} Ke7 {+4.03/22 3.1s} 26. Rd4 {-3.98/18 1.2s} c5 {+4.06/21 2.3s} 27. Rd3 {-4.13/20 5.9s} Rd8 {+4.13/22 1.7s} 28. Rxd8 {-4.38/20 2.1s} Kxd8 {+4.15/22 1.5s} 29. Kb2 {-4.81/21 4.1s} Kc7 {+4.65/21 6.3s} 30. h4 {-5.33/23 6.2s} Kd6 {+6.00/19 2.9s} 31. Ka3 {-6.17/20 3.3s} Ke5 {+7.07/20 2.3s} 32. Ka4 {-6.02/19 0.56s} Kf5 {+9.26/20 6.8s} 33. Kb5 {-8.27/16 0.77s} Kg4 {+9.82/19 2.2s} 34. Kc6 {-11.74/19 1.9s} Kxg3 {+10.92/18 5.1s} 35. a3 {-12.94/19 1.1s} f5 {+11.41/17 1.3s} 36. Kd6 {-13.29/17 0.63s} f4 {+12.15/17 2.2s} 37. Kxe6 {-13.58/16 0.34s} f3 {+12.17/18 1.0s} 38. h5 {-14.83/16 0.23s, Black wins by adjudication} 0-1[/pgn]
Time to remove opening lines like these to remove from your test set?
2. Crazy games (incompatible scores)
When 2 engines both show a very good positive score then usually one is wrong.
[pgn][Event ""]
[Site ""]
[Date "2020.01.26"]
[Round "197"]
[White "ProDeo"]
[Black "Fruit_2.3"]
[Result "0-1"]
{Crazy scores in game 197 (move 52) with scores like 1.36 2.09 2.28 1.53 }1. b3 {book} e5 {book} 2. Bb2 {book} Nc6 {book} 3. e3 {book} Nf6 {book} 4. Bb5 {book} d6 {book} 5. Ne2 {book} Bd7 {book} 6. O-O {book} a6 {book} 7. Bxc6 {book} Bxc6 {book} 8. d3 {book} Qe7 {book} 9. Nd2 {+0.04/10 1.5s} g6 {+0.12/11 1.3s} 10. e4 {-0.02/11 1.2s} Bh6 {+0.17/11 0.95s} 11. Nc4 {-0.07/11 1.7s} b5 {+0.25/12 0.86s} 12. Ne3 {-0.06/11 1.7s} Qe6 {+0.23/10 1.5s} 13. c4 {+0.15/11 1.2s} Bxe3 {+0.16/10 1.3s} 14. fxe3 {+0.16/10 0.53s} bxc4 {-0.04/12 2.0s} 15. bxc4 {+0.14/10 0.51s} O-O {-0.02/13 1.4s} 16. Nc3 {+0.33/12 1.5s} Rab8 {-0.01/12 0.91s} 17. Rb1 {+0.25/12 1.5s} Rb7 {+0.01/12 1.1s} 18. Nd5 {+0.22/12 1.1s} Bxd5 {-0.19/13 1.9s} 19. cxd5 {+0.05/10 0.24s} Qe7 {-0.10/14 1.3s} 20. Ba3 {+0.33/14 3.7s} Rfb8 {-0.06/12 1.8s} 21. Rxb7 {+0.39/12 0.69s} Rxb7 {-0.02/11 0.41s} 22. Qa4 {+0.36/12 1.0s} Rb6 {-0.04/13 1.3s} 23. h3 {+0.37/12 0.74s} Kg7 {-0.03/13 0.96s} 24. Qc2 {+0.43/12 0.90s} Rb5 {0.00/12 1.3s} 25. Kh2 {+0.40/11 1.1s} Qd8 {-0.07/12 1.3s} 26. g3 {+0.49/11 1.1s} Rb7 {-0.01/10 0.67s} 27. Bb2 {+0.46/11 1.3s} Qe7 {-0.19/11 1.8s} 28. Rf2 {+0.41/11 0.99s} Nd7 {-0.24/11 1.6s} 29. Ba3 {+0.53/12 1.3s} Nf6 {-0.10/11 1.1s} 30. Qc4 {+0.51/12 0.75s} Qe8 {-0.28/11 1.3s} 31. Qxa6 {+1.00/12 0.81s} Qb8 {-0.42/11 0.68s} 32. Qc4 {+1.04/12 2.8s} h6 {-0.50/11 2.3s} 33. Qc2 {+1.06/11 0.72s} Ra7 {-0.60/11 1.4s} 34. Bc1 {+1.19/11 0.80s} h5 {-0.58/11 1.3s} 35. Rf1 {+1.21/11 0.83s} Nd7 {-0.50/10 0.61s} 36. d4 {+1.22/10 0.71s} f6 {-0.60/10 0.85s} 37. Rf2 {+1.12/11 0.63s} Qb6 {-0.55/11 1.6s} 38. Qc4 {+1.35/12 1.4s} Qa6 {-0.71/10 0.83s} 39. Qxa6 {+1.49/13 0.68s} Rxa6 {-0.78/11 0.34s} 40. Rc2 {+1.00/13 0.78s} Kf7 {-0.78/12 0.44s} 41. Kg2 {+0.95/15 3.6s} Ra4 {-0.65/14 1.5s} 42. Kf3 {+1.15/13 0.67s} Ke7 {-0.59/14 1.6s} 43. Rxc7 {+1.11/14 0.84s} Rxa2 {-0.58/13 0.88s} 44. Rb7 {+0.99/13 0.90s} Rc2 {-0.28/14 0.73s} 45. dxe5 {+0.92/14 0.70s} Kd8 {0.00/15 1.0s} 46. Bb2 {+1.22/15 0.83s} Nc5 {0.00/15 0.91s} 47. Rb8+ {+1.63/13 0.65s} Kc7 {+0.97/13 0.40s} 48. exd6+ {+1.37/13 0.80s} Kxb8 {+0.73/15 0.57s} 49. Bxf6 {+1.02/14 1.1s} Kc8 {+0.92/14 0.99s} 50. e5 {+0.77/14 1.3s} Rd2 {+1.14/14 1.1s} 51. e4 {+0.83/13 0.79s} Rd3+ {+0.79/13 0.71s} 52. Kf4 {+0.92/13 1.2s} Rd1 {+1.36/15 0.90s} 53. e6 {+2.09/13 0.98s} Rf1+ {+2.28/15 0.78s} 54. Ke5 {+1.53/14 1.0s} Nd3+ {+2.60/16 1.0s} 55. Kd4 {+2.66/7 0.013s} Rxf6 {+2.75/17 0.92s} 56. Kxd3 {+0.73/13 0.78s} Rf3+ {+2.75/16 1.2s} 57. Kd4 {+0.40/13 0.79s} Kd8 {+3.61/16 1.4s} 58. Ke5 {+0.88/14 1.4s} g5 {+4.64/16 1.2s} 59. d7 {-0.38/14 1.1s} Kc7 {+5.03/16 0.65s} 60. g4 {0.00/14 1.3s} h4 {+11.09/15 1.0s} 61. Kd4 {-6.76/14 0.88s} Rxh3 {+11.46/14 0.61s} 62. e5 {-8.53/15 1.2s} Ra3 {+12.82/15 0.80s} 63. Ke4 {-9.17/14 0.91s} h3 {+13.65/14 0.77s} 64. Kf5 {-10.75/12 0.73s} h2 {+14.00/13 0.99s} 65. Kf6 {-10.93/13 1.0s, Black wins by adjudication} 0-1[/pgn]
Obviously ProDeo overestimated its passed pawns evaluation.
[pgn][Event ""]
[Site ""]
[Date "2020.02.10"]
[Round "789"]
[White "Ethereal_11.75"]
[Black "Xiphos_0.6"]
[Result "0-1"]
{Crazy scores in game 789 (move 35) with scores like 3.18 2.60 3.25 3.72 }1. d4 {book} f5 {book} 2. Nf3 {book} g6 {book} 3. Bf4 {book} Bg7 {book} 4. e3 {book} Nf6 {book} 5. Bc4 {book} d5 {book} 6. Bb3 {book} Be6 {book} 7. O-O {book} Qd7 {book} 8. Ng5 {book} Bg8 {book} 9. Nf3 {+1.49/17 3.3s} Be6 {0.00/40 0.84s} 10. Nbd2 {+1.46/17 2.2s} Nc6 {-1.11/17 1.3s} 11. Ba4 {+1.49/16 2.1s} Qc8 {-1.24/21 3.2s} 12. Ne5 {+1.72/18 2.4s} O-O {-1.27/22 0.89s} 13. Bxc6 {+1.69/19 2.0s} bxc6 {-1.02/16 0.81s} 14. Nb3 {+1.91/20 4.3s} Bd7 {-1.10/19 2.5s} 15. Nd3 {+1.96/19 1.9s} a5 {-1.07/19 2.2s} 16. a4 {+2.06/18 2.3s} Qb8 {-1.28/18 1.7s} 17. Nbc5 {+1.96/18 2.6s} Bc8 {-1.26/20 2.2s} 18. f3 {+1.96/20 1.6s} Ba6 {-1.45/19 3.6s} 19. Ne6 {+2.27/18 2.3s} Rc8 {-1.34/19 3.0s} 20. g4 {+2.51/18 2.2s} Bxd3 {-1.41/18 2.0s} 21. cxd3 {+2.54/18 2.5s} Qb6 {-1.54/21 2.6s} 22. Rc1 {+2.55/18 3.1s} Kf7 {-1.59/21 1.5s} 23. Nc5 {+2.35/17 3.2s} Qb8 {-1.43/17 3.1s} 24. gxf5 {+3.47/18 2.8s} gxf5 {-1.29/20 1.8s} 25. Kh1 {+3.56/18 2.5s} Rg8 {-1.61/18 3.6s} 26. Qe2 {+3.77/17 3.0s} Bh8 {-2.51/18 6.4s} 27. e4 {+3.63/18 3.7s} Nh5 {-2.86/20 2.1s} 28. Be5 {+3.89/18 3.5s} Qf8 {-2.22/21 2.1s} 29. Bxh8 {+3.36/19 4.4s} Qh6 {-2.10/23 5.0s} 30. Be5 {+2.87/17 1.6s} f4 {-2.10/26 1.7s} 31. Rg1 {+2.57/17 1.4s} Ng3+ {-2.42/22 2.4s} 32. Rxg3 {+2.98/18 1.2s} fxg3 {-2.38/23 2.4s} 33. Re1 {+3.02/17 1.8s} Qh3 {-2.10/23 6.3s} 34. Bxc7 {+3.14/19 3.9s} Rg6 {-2.10/24 1.1s} 35. Bf4 {+3.18/18 1.3s} gxh2 {+2.60/22 1.8s} 36. Bxh2 {+3.25/19 1.6s} Rag8 {+3.72/26 1.4s} 37. exd5 {+3.39/19 2.2s} e5 {+3.79/30 1.3s} 38. Nd7 {-5.82/21 3.1s} Rg2 {+3.84/28 1.6s} 39. Nxe5+ {-6.00/17 0.49s} Ke8 {+3.84/30 3.6s} 40. Nxc6+ {-6.12/18 1.6s} Rxe2 {+4.84/25 3.7s} 41. Rxe2+ {-6.04/19 3.0s} Kf8 {+5.02/24 1.8s} 42. Rf2 {-6.43/19 2.1s} Qh4 {+5.28/25 6.9s} 43. Re2 {-6.54/19 2.5s} Qh6 {+5.41/23 3.3s} 44. Rg2 {-6.42/19 3.0s} Rxg2 {+5.26/25 1.8s} 45. Kxg2 {-6.46/17 2.0s} Qg5+ {+5.41/23 3.6s} 46. Bg3 {-6.61/19 1.9s} Qxd5 {+5.72/23 6.8s} 47. Ne5 {-6.64/18 3.2s} Qxd4 {+5.71/20 1.4s} 48. f4 {-6.80/17 3.4s} Qxb2+ {+5.85/20 2.9s} 49. Bf2 {-6.62/17 2.9s} Qc2 {+5.61/18 2.5s} 50. Kf3 {-7.25/17 3.8s} Qxa4 {+6.17/18 2.5s} 51. Bc5+ {-7.69/16 4.5s} Kg7 {+6.21/21 2.9s} 52. Ke3 {-7.86/16 3.2s} Qb5 {+6.37/17 1.6s} 53. Bd4 {-8.18/16 5.1s} a4 {+6.58/17 1.0s} 54. f5 {-8.42/15 2.2s} Kf6 {+6.83/18 1.5s} 55. Nc4+ {-8.16/17 2.9s} Ke7 {+6.86/16 0.87s} 56. Be5 {-8.88/15 2.7s} Qd5 {+7.49/16 2.2s} 57. Ke2 {-9.39/16 5.0s} a3 {+8.06/17 0.93s} 58. Bc3 {-11.08/16 4.2s} Qg2+ {+8.57/18 1.7s} 59. Ke3 {-11.50/17 3.2s} a2 {+8.88/17 2.1s} 60. Nd2 {-11.71/16 2.4s} Qg5+ {+10.18/17 1.7s} 61. Ke2 {-12.63/18 5.3s, Black wins by adjudication} 0-1[/pgn]
Ethereal too optimistic.
3. Games that should have been won
When an engine shows a score of +9.92 one might expect it to win the game, not so for Stockfish 8.
[pgn][Event ""]
[Site ""]
[Date "2020.02.04"]
[Round "238"]
[White "Komodo_10"]
[Black "Stockfish_8"]
[Result "1/2-1/2"]
{Stockfish_8 should have won game 238 with a score of 9.92 (move 115... Nc2) draw only.}1. e4 {book} d6 {book} 2. d4 {book} Nf6 {book} 3. Nc3 {book} g6 {book} 4. Be3 {book} Bg7 {book} 5. f3 {book} O-O {book} 6. Qd2 {book} c6 {book} 7. Nge2 {book} Qc7 {book} 8. h4 {book} h5 {book} 9. a4 {+0.29/17 2.0s} e5 {-0.23/21 3.9s} 10. O-O-O {+0.39/16 1.9s} Be6 {-0.22/20 6.3s} 11. Kb1 {+0.26/17 5.3s} Na6 {-0.33/20 3.2s} 12. Nc1 {+0.25/16 1.9s} Nb4 {-0.31/19 1.5s} 13. dxe5 {+0.32/17 2.8s} dxe5 {-0.39/20 0.48s} 14. Qd6 {+0.26/19 1.9s} Qxd6 {-0.32/21 1.4s} 15. Rxd6 {+0.32/19 1.5s} b6 {-0.55/22 9.0s} 16. Nd1 {+0.35/18 2.0s} Rad8 {-0.22/19 1.2s} 17. Rxd8 {+0.29/20 1.5s} Rxd8 {-0.16/18 0.38s} 18. Be2 {+0.34/21 3.2s} c5 {-0.35/21 2.5s} 19. Bb5 {+0.46/20 2.2s} Rc8 {-0.46/19 0.41s} 20. Bf2 {+0.31/21 3.3s} c4 {-0.42/20 2.0s} 21. c3 {+0.37/20 3.4s} Nc6 {-0.17/21 1.0s} 22. Na2 {+0.26/20 3.3s} Na5 {-0.25/22 6.2s} 23. Ne3 {+0.34/20 1.6s} Rd8 {-0.29/22 2.2s} 24. Kc2 {+0.29/20 2.5s} Ne8 {-0.36/23 4.6s} 25. Nd5 {+0.28/20 1.9s} f5 {-0.02/22 7.8s} 26. Rd1 {+0.40/17 1.3s} Nd6 {-0.07/20 1.5s} 27. Be3 {+0.42/19 2.9s} Bxd5 {0.00/21 0.79s} 28. exd5 {+0.23/22 3.2s} Nxb5 {0.00/24 4.2s} 29. axb5 {+0.19/22 1.4s} Nb7 {-0.09/26 1.7s} 30. Nb4 {+0.32/19 2.2s} Nd6 {0.00/24 0.79s} 31. Nc6 {+0.74/19 1.4s} Rd7 {-0.05/26 1.6s} 32. f4 {+0.43/21 3.6s} e4 {0.00/23 0.21s} 33. Ne5 {+0.41/21 1.1s} Rc7 {0.00/24 1.6s} 34. Nxg6 {+0.49/22 1.7s} Bf6 {-0.08/25 2.0s} 35. Ne5 {+0.29/21 1.4s} Rg7 {0.00/22 0.24s} 36. Rg1 {+0.20/21 2.7s} Bxh4 {0.00/26 1.9s} 37. Kd1 {+0.22/23 5.4s} Bg3 {0.00/25 1.7s} 38. Rh1 {+0.19/21 1.2s} h4 {0.00/26 0.80s} 39. Ke2 {+0.12/20 0.98s} Rc7 {0.00/26 1.9s} 40. Nc6 {+0.22/20 4.2s} Nxb5 {0.00/25 3.8s} 41. Bd4 {+0.14/20 6.1s} Bxf4 {0.00/23 4.8s} 42. Bf6 {0.00/19 4.2s} Rh7 {+0.16/20 3.2s} 43. Rf1 {0.00/20 2.2s} Kf7 {+0.09/21 2.7s} 44. Be7 {0.00/22 2.5s} Bh2 {+0.40/17 1.5s} 45. Rxf5+ {-0.07/17 1.9s} Ke8 {+0.27/18 0.49s} 46. Rf8+ {-0.07/19 1.4s} Kd7 {+0.33/1 0s} 47. Rd8+ {-0.03/20 1.9s} Kc7 {+0.33/1 0s} 48. Rg8 {0.00/20 2.3s} Nd6 {+0.04/20 9.9s} 49. Bg5 {0.00/19 2.7s} Kb7 {+0.42/16 1.2s} 50. Rg6 {0.00/20 1.7s} a5 {+0.11/18 3.5s} 51. Nd4 {0.00/20 1.6s} a4 {0.00/19 3.4s} 52. Be3 {0.00/18 2.1s} h3 {+0.13/20 1.5s} 53. gxh3 {0.00/21 1.6s} Rxh3 {0.00/16 0.44s} 54. Rg7+ {0.00/22 1.9s} Ka6 {+0.30/19 1.6s} 55. Rg8 {0.00/21 0.91s} Be5 {+0.27/20 2.6s} 56. Nc6 {0.00/21 1.3s} Rh2+ {+0.21/17 0.37s} 57. Kd1 {-0.07/22 5.9s} Rh8 {+0.51/20 1.3s} 58. Nb4+ {-0.15/18 4.8s} Kb5 {+0.59/20 2.4s} 59. Rxh8 {-0.22/19 0.91s} Bxh8 {+0.49/20 0.92s} 60. Nc2 {-0.19/21 2.4s} Nf5 {+0.77/22 1.3s} 61. Bf2 {-0.34/19 1.3s} Ka6 {+0.67/21 0.51s} 62. Ke2 {-0.51/18 0.81s} b5 {+1.20/21 1.4s} 63. Bc5 {-0.62/21 2.9s} Be5 {+0.97/20 0.39s} 64. Ne3 {-0.77/20 1.8s} Nh6 {+1.00/23 2.1s} 65. Nc2 {-0.56/23 1.3s} Ng4 {+1.09/23 0.97s} 66. Nd4 {-0.79/23 4.4s} Bh2 {+0.97/27 8.6s} 67. d6 {-0.76/21 1.4s} Nf6 {+1.25/25 1.5s} 68. Ne6 {-0.80/22 1.1s} Nd7 {+1.23/25 0.69s} 69. Ba3 {-0.80/22 1.3s} Bg1 {+1.40/24 0.84s} 70. Nc7+ {-0.92/21 0.89s} Kb6 {+1.40/27 0.71s} 71. Nd5+ {-0.95/22 0.91s} Kb7 {+1.27/30 2.1s} 72. Ne7 {-0.99/23 0.86s} Nf6 {+1.40/26 0.88s} 73. Kf1 {-0.92/20 0.66s} Be3 {+1.33/29 1.9s} 74. Ke2 {-0.94/21 0.81s} Bg5 {+1.25/30 1.9s} 75. Nf5 {-0.97/22 1.1s} Bf4 {+1.25/30 1.4s} 76. Nd4 {-0.78/26 1.8s} Kb6 {+1.25/30 1.6s} 77. Ne6 {-0.85/26 1.5s} Bh6 {+1.24/29 1.6s} 78. Kd1 {-0.86/25 1.6s} Nd7 {+1.24/33 3.0s} 79. Ke2 {-0.86/27 0.81s} Bc1 {+1.24/32 2.1s} 80. Kd1 {-0.81/24 0.67s} Be3 {+1.18/31 0.79s} 81. Ke2 {-0.93/28 3.6s} Bh6 {+1.18/35 3.8s} 82. Kd1 {-0.73/28 5.3s} Nf6 {+0.76/30 6.3s} 83. Ke2 {-0.87/27 3.0s} Kb7 {+0.89/29 1.4s} 84. Nd4 {-0.94/27 6.2s} Ka6 {+0.71/31 4.6s} 85. Nf5 {-0.88/27 2.1s} Bf4 {+1.18/29 1.3s} 86. Ng7 {-0.85/24 1.4s} Bc1 {+1.24/28 3.0s} 87. Ne8 {-0.54/23 1.0s} Nd7 {+0.58/29 6.5s} 88. Nc7+ {-0.66/25 1.0s} Kb6 {+0.56/25 0.55s} 89. Kd1 {-0.73/25 1.3s} Bg5 {+0.83/28 1.4s} 90. Ne6 {-0.64/26 2.0s} Bh4 {+0.75/27 0.41s} 91. Ke2 {-0.52/24 1.1s} Bg3 {+0.57/29 3.5s} 92. Ke3 {-0.64/25 3.2s} Nf6 {+0.42/26 0.48s} 93. Nd4 {-0.46/24 1.9s} Be5 {+0.36/28 2.9s} 94. Nf5 {-0.48/26 2.1s} Kc6 {+0.84/27 0.49s} 95. Nd4+ {-0.51/25 0.88s} Bxd4+ {+0.98/28 1.5s} 96. Kxd4 {-0.50/25 0.62s} e3 {+0.48/26 0.49s} 97. Kxe3 {-0.58/26 1.3s} Ne8 {+0.35/28 2.6s} 98. d7 {-0.54/30 1.6s} Kxd7 {+0.35/26 0.33s} 99. Kd4 {-0.58/27 1.0s} Kc6 {+0.44/27 1.4s} 100. Bb4 {-0.54/29 0.78s} Nc7 {+0.79/29 1.1s} 101. Be7 {-0.57/28 0.86s} Ne6+ {+0.79/29 0.35s} 102. Ke5 {-0.54/28 0.72s} Nc5 {+0.79/34 1.8s} 103. Kd4 {-0.50/26 0.84s} Nd3 {+0.79/34 0.38s} 104. Ba3 {-0.64/27 0.87s} Nf4 {+0.79/37 1.8s} 105. Ke5 {-0.52/29 1.2s} Ne2 {+0.79/34 1.8s} 106. Be7 {-0.51/28 1.7s} Kb6 {+0.79/33 0.82s} 107. Ba3 {-0.38/32 2.4s} Nc1 {+0.79/38 1.6s} 108. Kd5 {-0.50/27 1.5s} Kb7 {+0.79/39 0.56s} 109. Kd6 {-0.45/30 1.1s} Nd3 {+0.79/42 2.9s} 110. Kd5 {-0.45/30 0.99s} Kc7 {+0.79/41 0.52s} 111. Bd6+ {-0.40/30 1.1s} Kb6 {+0.79/37 2.1s} 112. Ba3 {-0.40/32 1.5s} Ka5 {+0.79/40 2.1s} 113. Kc6 {-0.47/30 1.4s} Ka6 {+0.79/40 2.4s} 114. Kd5 {-0.40/31 1.4s} Ne1 {+0.79/40 1.1s} 115. Kc5 {-0.12/34 4.2s} Nc2 {+9.92/29 1.8s} 116. Bb4 {-0.12/35 2.2s} Ne3 {+0.10/36 3.9s} 117. Ba3 {-0.12/33 1.6s} Nd1 {+0.10/40 1.8s} 118. Kd5 {-0.12/35 2.1s} Kb6 {+0.25/28 1.4s} 119. Bc5+ {-0.12/34 2.2s} Kb7 {+0.10/41 4.9s} 120. Ba3 {-0.12/35 2.0s} Ka6 {+0.10/44 3.1s} 121. Kc6 {-0.12/35 3.3s} Nf2 {+0.10/43 1.3s} 122. Kc5 {-0.12/34 1.9s} Nh3 {+0.10/43 3.1s} 123. Kd5 {-0.12/32 1.4s} Ng5 {+0.10/43 3.0s} 124. Kd6 {-0.11/32 1.8s} Kb6 {+0.03/44 14s} 125. Bc5+ {-0.16/32 1.5s} Kb7 {+0.03/44 4.6s} 126. Kd5 {-0.15/35 4.1s} Nf7 {+0.03/36 1.9s} 127. Bb4 {-0.16/34 3.0s} Nh8 {0.00/35 2.6s} 128. Kc5 {-0.17/33 6.0s} Ka6 {0.00/39 0.39s} 129. Kc6 {-0.07/35 3.2s} Ng6 {0.00/44 1.8s} 130. Ba3 {-0.06/34 1.8s} Nf4 {0.00/43 1.6s} 131. Kc5 {0.00/34 1.5s} Ka5 {0.00/45 2.1s} 132. Bb4+ {0.00/46 3.5s} Ka6 {0.00/1 0s} 133. Ba3 {0.00/34 0.78s} Ka5 {0.00/47 3.3s} 134. Bb4+ {0.00/50 3.9s} Ka6 {0.00/1 0s} 135. Ba3 {0.00/55 3.2s, Draw by 3-fold repetition} 1/2-1/2[/pgn]
Whoops, a bug.
4. Drop in score (horizon effects mostly)
[pgn][Event ""]
[Site ""]
[Date "2020.02.04"]
[Round "982"]
[White "Komodo_10"]
[Black "Stockfish_8"]
[Result "1-0"]
[BlackElo ""]
[WhiteElo ""]
{Drop in score of 3.39 (0.46 to -2.93) for Stockfish_8 in game 982 during moves 30-31, game lost
}1. d4 {book} Nf6 {book} 2. c4 {book} g6 {book} 3. Nc3 {book} Bg7 {book} 4. e4 {book} O-O {book} 5. f3 {book} d6 {book} 6. Be3 {book} Nc6 {book} 7. Qd2 {book} Re8 {book} 8. O-O-O {book} a6 {book} 9. Kb1 {+0.56/16 1.3s} Bd7 {-0.65/19 6.0s} 10. h4 {+0.44/17 2.7s} h5 {-0.66/20 1.7s} 11. Nh3 {+0.46/21 2.0s} e5 {-0.58/21 1.6s} 12. d5 {+0.59/22 6.1s} Nd4 {-0.69/19 0.52s} 13. Ne2 {+0.59/21 2.3s} Bxh3 {-0.88/21 3.6s} 14. Rxh3 {+0.48/17 0.95s} Nd7 {-0.90/19 0.34s} 15. Nxd4 {+0.61/21 3.8s} exd4 {-1.00/22 3.0s} 16. Bxd4 {+0.62/22 1.6s} Bxd4 {-0.88/20 0.59s} 17. Qxd4 {+0.55/23 1.4s} Qe7 {-0.89/22 6.0s} 18. Bd3 {+0.55/19 3.7s} Rab8 {-0.89/19 3.7s} 19. Rd2 {+0.55/17 2.6s} Ne5 {-0.86/19 1.8s} 20. Bc2 {+0.63/17 1.1s} Qf6 {-0.59/18 3.2s} 21. c5 {+0.65/18 2.3s} dxc5 {-0.72/21 13s} 22. Qxc5 {+0.91/16 1.1s} b5 {-0.77/20 2.5s} 23. Qc3 {+0.67/17 3.2s} Rbc8 {-0.53/17 1.3s} 24. Rh1 {+0.79/18 3.6s} c6 {-0.28/18 0.86s} 25. d6 {+0.73/19 1.5s} Rcd8 {-0.45/21 2.8s} 26. Rhd1 {+0.44/18 2.5s} Qxh4 {-0.31/21 1.8s} 27. b3 {+0.49/17 2.1s} Qg5 {0.00/19 1.0s} 28. Rf1 {+0.45/19 5.4s} Qf4 {+0.31/19 1.7s} 29. Rdd1 {+0.33/18 4.8s} Re6 {+0.45/19 0.86s} 30. Qc5 {+0.65/17 0.96s} g5 {+0.46/18 1.8s} 31. g3 {+2.30/16 0.82s} Qf6 {-2.93/22 8.2s} 32. f4 {+2.29/17 0.70s} Rexd6 {-3.10/22 2.5s} 33. fxe5 {+2.63/17 1.3s} Rxd1+ {-2.86/15 0.43s} 34. Rxd1 {+2.67/18 1.1s} Rxd1+ {-2.90/15 0.18s} 35. Bxd1 {+2.67/19 1.8s} Qg6 {-2.88/18 1.6s} 36. Bc2 {+2.46/19 6.1s} h4 {-2.39/15 0.54s} 37. e6 {+2.36/16 0.68s} fxe6 {-2.19/14 0.24s} 38. Qxc6 {+2.54/18 2.5s} h3 {-2.63/20 2.4s} 39. e5 {+2.43/19 2.7s} Qf7 {-2.68/22 1.9s} 40. Qxa6 {+3.38/19 3.1s} h2 {-2.75/21 0.55s} 41. Qa8+ {+2.96/24 4.0s} Kg7 {-3.04/29 5.3s} 42. Qg2 {+3.51/22 2.6s} Qh5 {-3.04/30 1.3s} 43. Qh1 {+3.42/25 3.3s} g4 {-3.06/22 3.1s} 44. Bd3 {+3.20/23 1.9s} Qh3 {-2.20/23 3.7s} 45. Qb7+ {+3.04/24 6.8s} Kf8 {-2.27/22 0.48s} 46. Qc8+ {+3.04/26 2.9s} Kg7 {-2.37/24 5.8s} 47. Qd7+ {+2.86/25 3.5s} Kf8 {-2.27/21 0.75s} 48. Qd8+ {+2.83/26 6.8s} Kg7 {-2.23/23 3.6s} 49. Qf6+ {+2.80/24 2.6s} Kg8 {-2.23/1 0s} 50. Qxe6+ {+2.92/24 2.2s} Kg7 {-2.52/23 6.2s} 51. Qd7+ {+2.77/22 1.8s} Kf8 {-2.28/23 1.5s} 52. Qd6+ {+2.77/23 2.9s} Kg7 {-2.39/23 3.3s} 53. Qf6+ {+2.77/23 2.0s} Kg8 {-2.39/1 0s} 54. Qd8+ {+2.83/22 1.7s} Kg7 {-2.29/20 2.0s} 55. Qc7+ {+2.77/23 1.7s} Kg8 {-2.09/22 5.5s} 56. Qb8+ {+2.81/23 2.2s} Kg7 {-2.08/23 8.8s} 57. Qb7+ {+2.91/22 1.1s} Kf8 {-2.06/20 0.48s} 58. Qa8+ {+2.74/21 1.4s} Kg7 {-1.54/22 9.2s} 59. Qh1 {+1.74/19 2.0s} Qxg3 {-1.28/20 0.77s} 60. Qb7+ {+1.80/19 0.90s} Kf8 {-1.35/17 0.23s} 61. Qa8+ {+1.85/19 0.98s} Kg7 {-0.60/16 0.50s} 62. Qa7+ {+1.68/20 0.93s} Kg8 {-2.21/21 0.77s} 63. Qh7+ {+1.63/19 1.1s} Kf8 {-2.21/1 0s} 64. Qf5+ {+1.65/19 0.80s} Kg7 {-2.18/21 1.3s} 65. Be4 {+1.77/21 2.7s} Qe1+ {-2.18/20 1.2s} 66. Kc2 {+1.94/17 0.44s} Qe2+ {-2.11/20 0.31s} 67. Kc3 {+1.96/19 0.47s} Qe1+ {-2.18/21 2.1s} 68. Kd3 {+1.86/19 0.64s} Qd1+ {-2.47/18 2.2s} 69. Ke3 {+1.72/19 0.59s} Qe1+ {-2.36/15 0.20s} 70. Kf4 {+1.81/21 1.8s} Qc1+ {-2.68/18 1.5s} 71. Kxg4 {+1.78/21 1.3s} Qg1+ {-2.70/15 0.16s} 72. Kh5 {+2.30/19 0.90s} h1=Q+ {-2.70/18 1.1s} 73. Bxh1 {+2.24/19 0.69s} Qxh1+ {-2.70/19 0.40s} 74. Kg5 {+2.28/19 0.82s} Qh6+ {-2.53/17 1.2s} 75. Kg4 {+2.28/5 0s} Qc6 {-2.72/17 0.67s} 76. Qf6+ {+9.07/29 1.4s} Qxf6 {-M52/32 1.3s} 77. exf6+ {+9.67/29 0.65s} Kxf6 {-M50/32 0.66s} 78. Kf4 {+M55/34 1.3s} Ke6 {-M48/33 0.15s} 79. Ke4 {+M53/33 0.26s} Kd6 {-M46/36 2.3s} 80. Kd4 {+M51/33 0.87s} b4 {-M46/24 1.2s, White wins by adjudication} 1-0[/pgn]
5. Double opening detector
Code: Select all
1. e4 {book} e6 {book} 2. d4 {book} d5 {book} 3. e5 {book} c5 {book}
4. c3 {book} Nc6 {book} 5. Nf3 {book} Bd7 {book} 6. Be2 {book} f6 {book}
7. O-O {book} Qc7 {book} 8. Re1 {book} O-O-O {book} 9. Bb5 {+0.54/17 7.5s}
Code: Select all
1. e4 {book} e6 {book} 2. d4 {book} d5 {book} 3. e5 {book} c5 {book}
4. c3 {book} Nc6 {book} 5. Nf3 {book} f6 {book} 6. Bd3 {book} Qc7 {book}
7. O-O {book} Bd7 {book} 8. Re1 {book} O-O-O {book} 9. Bb5 {+0.61/17 7.3s}
6. Lost games analysis
This option tries to find the moment where an engine starts to lose, it's not perfect but valuable it is.
[pgn][Event ""]
[Site ""]
[Date "2020.02.04"]
[Round "3"]
[White "Stockfish_8"]
[Black "Komodo_10"]
[Result "1-0"]
[BlackElo ""]
[WhiteElo ""]
{Game 3 Stockfish_8 - Komodo_10 1-0
37...Rg8 -0.29 38...Bd6 -1.22 39...Be5 -1.37 40...c5 -1.65}
1. e4 {book} e5 {book} 2. Nf3 {book} Nc6 {book} 3. Bb5 {book} a6 {book} 4. Bxc6 {book} dxc6 {book} 5. O-O {book} Bg4 {book} 6. d3 {book} Bd6 {book} 7. Be3 {book} Nf6 {book} 8. Nbd2 {book} Qe7 {book} 9. h3 {+0.26/17 3.3s} Be6 {-0.08/16 1.6s} 10. c3 {+0.31/20 3.2s} O-O {-0.07/17 2.4s} 11. d4 {+0.36/18 1.9s} exd4 {-0.10/19 5.6s} 12. cxd4 {+0.20/18 3.4s} Nd7 {0.00/20 6.9s} 13. Re1 {+0.22/19 6.4s} f6 {0.00/16 1.8s} 14. Nh4 {+0.28/19 2.2s} Rae8 {+0.22/17 5.0s} 15. f4 {+0.26/20 5.0s} Kh8 {+0.12/17 3.1s} 16. Nhf3 {+0.46/16 1.4s} g6 {0.00/16 1.8s} 17. Rc1 {+0.49/17 3.4s} Kg7 {0.00/17 4.0s} 18. a3 {+0.62/16 1.9s} Qd8 {-0.20/18 3.6s} 19. Qc2 {+0.66/17 3.4s} Kh8 {-0.15/18 4.4s} 20. Re2 {+0.60/18 2.1s} Qb8 {-0.03/16 2.9s} 21. g4 {+0.70/17 1.9s} Bf7 {-0.07/16 2.9s} 22. Rce1 {+0.70/17 2.5s} Be7 {-0.08/17 1.3s} 23. Bf2 {+0.83/16 2.4s} Qd8 {-0.06/16 1.7s} 24. Bg3 {+0.98/17 4.2s} Nb6 {-0.16/15 1.3s} 25. Nb3 {+0.86/18 4.3s} Qc8 {-0.23/16 2.2s} 26. Nc5 {+0.98/15 1.1s} Bc4 {-0.24/17 3.2s} 27. Rh2 {+1.02/18 2.2s} Bf7 {-0.14/17 4.5s} 28. Qc3 {+1.08/17 6.0s} Nc4 {-0.24/15 4.0s} 29. a4 {+1.10/16 3.1s} b6 {-0.21/14 1.6s} 30. Nd3 {+1.01/16 1.9s} Qd8 {-0.29/14 2.6s} 31. Bh4 {+1.14/14 0.59s} h6 {-0.21/14 1.7s} 32. f5 {+1.70/16 1.7s} gxf5 {-0.76/14 1.6s} 33. exf5 {+1.48/18 2.7s} Kh7 {-1.06/14 1.3s} 34. b3 {+1.43/18 1.1s} Na5 {-0.47/14 0.65s} 35. b4 {+1.02/17 0.38s} Nc4 {-0.50/15 0.89s} 36. Rhe2 {+1.19/17 1.7s} b5 {-0.44/15 0.80s} 37. Nf4 {+1.35/15 0.64s} Rg8 {-0.29/15 0.92s} 38. Ng6 {+2.12/16 0.95s} Bd6 {-1.22/13 0.80s} 39. Nfe5 {+1.97/16 0.29s} Bxe5 {-1.37/14 0.83s} 40. dxe5 {+2.43/17 1.1s} c5 {-1.65/14 0.85s} 41. Qc2 {+3.07/19 5.9s} cxb4 {-2.14/17 6.6s} 42. Rd1 {+3.66/20 9.3s} b3 {-2.31/18 7.9s} 43. Qb1 {+3.69/17 0.85s} Nd6 {-2.18/18 3.4s} 44. Nf4 {+4.17/18 1.9s} Bc4 {-2.64/14 4.1s} 45. Bxf6 {+4.34/18 1.3s} Qb8 {-3.11/16 3.3s} 46. Rf2 {+4.66/17 1.2s} bxa4 {-3.98/16 3.4s} 47. exd6 {+4.93/17 0.38s} cxd6 {-4.79/19 4.3s} 48. Be7 {+4.95/20 2.0s} Bf7 {-4.01/15 1.8s} 49. Nd5 {+5.13/19 0.42s} Qa7 {-4.08/17 4.3s} 50. Nf6+ {+5.24/19 1.8s} Kg7 {-4.19/17 1.8s} 51. Ne4 {+5.01/19 0.55s} Kh7 {-3.60/16 1.6s} 52. Bxd6 {+5.45/20 1.6s} Rc8 {-4.09/18 2.4s} 53. Qa1 {+6.32/17 1.5s} Rc2 {-4.67/17 1.3s} 54. Qe5 {+8.62/21 1.6s} b2 {-5.93/17 2.0s} 55. Nf6+ {+10.36/19 0.71s} Kh8 {-6.35/17 0.39s} 56. Nxg8+ {+11.97/21 1.5s} Kxg8 {-7.82/18 0.70s} 57. Bc5 {+12.71/21 0.94s} Rc1 {-9.24/19 1.7s} 58. Kh2 {+13.22/21 1.7s} Rxd1 {-9.38/19 1.2s} 59. Rxb2 {+14.17/18 0.36s} a3 {-9.84/18 1.8s} 60. Rb8+ {+M21/25 1.2s} Qxb8 {-10.85/17 0.70s} 61. Qxb8+ {+M19/27 0.43s} Kh7 {-M24/17 0.43s, White wins by adjudication} 1-0[/pgn]