| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 51. K Sek vs A Zabotin |
| ½-½ | 77 | 2017 | Russian Championship Higher League | B56 Sicilian |
| 52. A Triapishko vs K Sek |
| 1-0 | 47 | 2017 | Russian Championship Higher League | A45 Queen's Pawn Game |
| 53. K Sek vs I Yeletsky |
| 1-0 | 37 | 2017 | Russian Championship Higher League | C24 Bishop's Opening |
| 54. K Sek vs P Ponkratov |
| 0-1 | 37 | 2018 | Russian Championship Higher League | B90 Sicilian, Najdorf |
| 55. A Moskalenko vs K Sek |
| ½-½ | 40 | 2018 | Russian Championship Higher League | C78 Ruy Lopez |
| 56. K Sek vs M Antipov |
| 0-1 | 38 | 2018 | Russian Championship Higher League | B93 Sicilian, Najdorf, 6.f4 |
| 57. A Gaifullin vs K Sek |
| 1-0 | 57 | 2018 | Russian Championship Higher League | A70 Benoni, Classical with 7.Nf3 |
| 58. A Gogolev vs K Sek |
| 0-1 | 52 | 2018 | Russian Championship Higher League | A46 Queen's Pawn Game |
| 59. K Sek vs D Rodin |
| ½-½ | 41 | 2018 | Russian Championship Higher League | B43 Sicilian, Kan, 5.Nc3 |
| 60. Z Tekeyev vs K Sek |
| ½-½ | 89 | 2018 | Russian Championship Higher League | C50 Giuoco Piano |
| 61. K Sek vs O Girya |
| 1-0 | 34 | 2018 | Russian Championship Higher League | B10 Caro-Kann |
| 62. R Yanchenko vs K Sek |
| ½-½ | 117 | 2018 | Russian Championship Higher League | A35 English, Symmetrical |
| 63. K Sek vs E Romanov |
| 0-1 | 49 | 2019 | St.Petersburg Rapid | C04 French, Tarrasch, Guimard Main line |
| 64. M Chigaev vs K Sek |
| 0-1 | 32 | 2019 | St.Petersburg Rapid | C45 Scotch Game |
| 65. K Sek vs S Golubov |
| ½-½ | 35 | 2019 | St.Petersburg Rapid | C07 French, Tarrasch |
| 66. K Sek vs C Anto |
| ½-½ | 57 | 2019 | Balaton Summer's End GM | B90 Sicilian, Najdorf |
| 67. K Sek vs F Vallejo Pons |
| 0-1 | 42 | 2019 | World Rapid Championship | C07 French, Tarrasch |
| 68. R Kezin vs K Sek |
| 1-0 | 37 | 2019 | World Rapid Championship | A75 Benoni, Classical with ...a6 and 10...Bg4 |
| 69. K Sek vs Wojtaszek |
| 1-0 | 37 | 2019 | World Rapid Championship | B90 Sicilian, Najdorf |
| 70. S Novikov vs K Sek |
| ½-½ | 32 | 2019 | World Rapid Championship | C69 Ruy Lopez, Exchange, Gligoric Variation |
| 71. K Sek vs V Belov |
| 1-0 | 44 | 2019 | World Rapid Championship | B10 Caro-Kann |
| 72. I Cheparinov vs K Sek |
| 1-0 | 74 | 2019 | World Rapid Championship | D32 Queen's Gambit Declined, Tarrasch |
| 73. K Sek vs Potkin |
| 0-1 | 28 | 2019 | World Rapid Championship | B90 Sicilian, Najdorf |
| 74. M Vavulin vs K Sek |
| ½-½ | 52 | 2019 | World Rapid Championship | C71 Ruy Lopez |
| 75. V Sanal vs K Sek |
| 1-0 | 41 | 2019 | World Rapid Championship | C45 Scotch Game |
Kibitzing
