The opening was the French Defense, Winawer, Poisoned Pawn Variation (with 7. Qg4). It ended up in a rook and pawn endgame. I’m wondering if Black playing 7… Nf5 could be a mistake. Although 7… Nf5 is a book move, I suppose it could still be a mistake. Next, I might try Stockfish 16 depth=59 vs Stockfish 15.1 depth=49. The game is copied below:
[Event "1200min/40+1200min/40+1200min"]
[Site "Quebec"]
[Date "2023.08.21"]
[Round "4"]
[White "Stockfish 16"]
[Black "Stockfish 15.1 BMI2"]
[Result "1-0"]
[ECO "C18"]
[Annotator "Bernier,David"]
[PlyCount "205"]
[TimeControl "40/72000:40/72000:72000"]
{2048MB, HPLAPTOP} 1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 Ne7 5. a3 Bxc3+ 6. bxc3 c5 7. Qg4 Nf5 {0.44/47 501} 8. Bd3 {0.86/59 3675 (Nf3)} h5 {0.86/47 554} 9. Qf4 {0.85/59 2344} b6 {0.81/47 118 (cxd4)} 10. Nh3 {0.74/59 1421} cxd4 {0.90/47 263} 11. Bxf5 {0.82/59 1679} exf5 {0.86/47 233} 12. Qg3 {0.80/59 696} Kf8 {0.81/47 152} 13. cxd4 {0.82/59 541} h4 {0.89/47 343} 14. Qf3 {0.79/59 581} Nc6 {0.76/47 240} 15. Qd3 {0.83/59 4856} Qe8 {0.80/47 366 (Kg8)} 16. O-O {0.74/59 1563} Nd8 {0.97/47 340} 17. Nf4 {0.86/59 1479 (Qf3)} Ne6 {0.85/47 271} 18. h3 {0.81/59 936} Qa4 {0.83/47 101 (Nxf4)} 19. Re1 {0.84/59 773 (Rd1)} Nxf4 {0.80/47 44} 20. Bxf4 {0.86/59 510} Be6 {0.89/47 96} 21. Reb1 {0.82/59 600} Rc8 {0.85/47 52} 22. c3 {0.85/59 246} Qc6 {0.83/47 80} 23. Rc1 {0.87/59 287} Qd7 {0.86/47 113 (Qa4)} 24. Qe3 {0.92/59 2190 (Qd2)} Kg8 {0.82/47 187} 25. Bg5 {0.91/59 1350 (Kh2)} Rh5 {0.83/47 52} 26. Rab1 {0.81/59 624} Qa4 {0.79/47 130} 27. Kh2 {0.86/59 623 (Qd2)} Rc7 {0.80/47 51} 28. Ra1 {0.92/59 685} Qd7 {0.85/47 45 (Qe8)} 29. Qd2 {0.91/59 348} Qc8 {0.86/47 20 (Rc4)} 30. Ra2 {0.92/59 2917 (Rab1)} Qd7 {0.87/47 45 (Rh8)} 31. Raa1 {0.85/59 963} Qc8 {0.86/47 15 (Rc4)} 32. Ra2 {0.82/59 452 (Rab1)} Qa6 {0.81/47 184 (Rc4)} 33. Bf4 {0.82/59 1167} Rc4 {0.81/47 90} 34. Qd1 {0.82/59 458 (Qe2)} Rh8 {0.87/47 102} 35. Bg5 {0.85/59 326} Qa4 {0.88/47 51 (Qb5)} 36. Qf3 {0.88/59 581 (Qd2)} Kf8 {0.85/47 40 (Qb5)} 37. Rb2 $16 {0.96/59 1006 (Qd3)} Qc6 {1.00/47 143 (Qxa3)} 38. Rb4 $16 {1.20/59 3613} Ke8 {0.96/47 60 (Kg8)} 39. a4 $16 {1.31/59 1973} Kd7 {0.97/47 28 (Kf8)} 40. Qe2 {1.79/59 2448 ( +1.65 )} Rxb4 $2 {0.95/47 27 (Rc8)} 41. cxb4 $18 {2.36/59 561} Qxa4 {0.95/47 4} 42. Rc2 $18 {2.59/59 851 (Qe1)} Rc8 {2.26/47 157} 43. Ra2 $18 {2.74/59 626} Qxb4 {2.35/47 65} 44. Rxa7+ {2.95/59 589} Rc7 {2.35/47 9} 45. Ra8 {3.05/59 547} Kc6 {2.41/47 36} 46. Qd1 {3.19/59 639} Rc8 {2.68/47 81} 47. Ra7 {3.30/59 750} Rc7 {2.68/47 9} 48. Ra4 {3.47/59 393} Qb2 {2.68/47 15} 49. Ra1 {3.48/59 500} Qb4 {2.82/47 85} 50. Rb1 {3.49/59 302} Qa5 {3.04/47 66} 51. Bd2 {3.54/59 576 (Qf1)} Qa6 {3.11/47 289 (Qa8)} 52. Ra1 {3.73/59 321} Qb5 {3.44/47 241} 53. Rb1 {3.77/59 712 (Qc1+)} Qa6 {3.59/47 194} 54. Ra1 {3.98/59 950} Qb5 {3.59/47 8} 55. Qc1+ {4.04/59 1112} Kd7 {3.59/47 15} 56. Qa3 {4.04/59 37} Ke8 {3.62/47 56} 57. Bg5 {4.04/59 146 (Bb4)} Qd7 {2.72/47 122} 58. Bxh4 {4.41/59 1683} Rc4 {2.84/47 19} 59. Qg3 {4.41/59 1398 (Rb1)} Kf8 {3.09/47 368} 60. Ra3 {4.76/59 3347 (Ra8+)} f4 {4.11/47 551 (Qc7)} 61. Qxf4 {5.07/59 1458} Bf5 {4.35/47 245} 62. Bd8 {5.10/59 1651} Qxd8 {4.47/47 562} 63. Qxf5 {5.24/59 811} Kg8 {4.78/47 501} 64. e6 {6.13/59 6172 (Ra7)} Rc7 {5.11/47 138} 65. g3 {6.49/59 1592} Re7 {5.11/47 21} 66. exf7+ {6.49/59 523} Rxf7 {5.11/47 0} 67. Qe6 {6.49/59 384} Qf6 {5.11/47 9} 68. Qxf6 {6.55/59 1439} Rxf6 {5.11/47 7} 69. Kg2 {6.55/59 956} Rf8 {6.38/47 445 (Rc6)} 70. Rb3 {6.55/59 175} Rb8 {6.38/47 37} 71. Kf3 {6.55/59 1789} Rf8+ {7.29/47 1325} 72. Ke3 {7.47/59 1692} Re8+ {7.34/47 884} 73. Kd2 {7.47/59 302 (Kd3)} Rb8 {7.34/47 1089} 74. Rb5 {7.47/59 965 (Ke3)} Rf8 {8.51/47 2189 (Kf7)} 75. Ke3 {7.47/59 618 (Ke2)} Re8+ {8.51/47 410} 76. Kd3 {7.47/59 116 (Kf3)} Ra8 {8.51/47 243 (Rb8)} 77. Rxb6 Rf8 78. Ke2 Re8+ 79. Kf3 Re4 80. Rb4 Kf7 81. g4 g6 82. h4 g5 83. hxg5 Re1 84. Kf4 Rf1 85. f3 Kg6 86. Rb6+ Kh7 87. Rf6 Kg7 88. Ke5 Re1+ 89. Kf5 Re3 90. f4 Re4 91. Rb6 Kf8 92. g6 Re8 93. Kf6 Rc8 94. f5 Ke8 95. Rb7 Rc6+ 96. Kg5 Kd8 97. g7 Kc8 98. Rb5 Rc1 99. g8=Q+ Kd7 100. Rb7+ Rc7 101. Qg7+ Kd8 102. Qxc7+ Ke8 103. Rb8# 1-0
