| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 51. Y Ilyuchyk vs F Sieber |
| 1-0 | 50 | 2019 | European Championship (Women) | B84 Sicilian, Scheveningen |
| 52. F Sieber vs M Olde |
| 1-0 | 57 | 2019 | European Championship (Women) | C78 Ruy Lopez |
| 53. T Narva vs F Sieber |
| 1-0 | 39 | 2019 | European Championship (Women) | C55 Two Knights Defense |
| 54. F Sieber vs G Aydin |
| 1-0 | 30 | 2019 | European Championship (Women) | B76 Sicilian, Dragon, Yugoslav Attack |
| 55. E Pipia vs F Sieber |
| 0-1 | 29 | 2019 | European Championship (Women) | D80 Grunfeld |
| 56. F Sieber vs M Rojickova |
| 1-0 | 44 | 2019 | European Championship (Women) | C84 Ruy Lopez, Closed |
| 57. S Petrenko vs F Sieber |
 | 0-1 | 37 | 2019 | European Championship (Women) | B59 Sicilian, Boleslavsky Variation, 7.Nb3 |
| 58. F Sieber vs I Bulmaga |
| 0-1 | 33 | 2019 | European Championship (Women) | B90 Sicilian, Najdorf |
| 59. A Muetsch vs F Sieber |
| ½-½ | 58 | 2019 | German Masters Women | B51 Sicilian, Canal-Sokolsky (Rossolimo) Attack |
| 60. G Mammadova vs F Sieber |
| ½-½ | 41 | 2019 | GER-AZE Women | B51 Sicilian, Canal-Sokolsky (Rossolimo) Attack |
| 61. N Buksa vs F Sieber |
| ½-½ | 34 | 2019 | European Team Championship (Women) | B52 Sicilian, Canal-Sokolsky (Rossolimo) Attack |
| 62. F Sieber vs G Heinatz |
| 1-0 | 51 | 2019 | European Team Championship (Women) | B36 Sicilian, Accelerated Fianchetto |
| 63. L Janzelj vs F Sieber |
| 1-0 | 43 | 2019 | European Team Championship (Women) | D86 Grunfeld, Exchange |
| 64. L Rogule vs F Sieber |
| 1-0 | 50 | 2019 | European Team Championship (Women) | D78 Neo-Grunfeld, 6.O-O c6 |
| 65. F Sieber vs B C Yildiz Kadioglu |
| ½-½ | 54 | 2019 | European Team Championship (Women) | C95 Ruy Lopez, Closed, Breyer |
| 66. L Koridze vs F Sieber |
| ½-½ | 43 | 2019 | European Team Championship (Women) | A50 Queen's Pawn Game |
| 67. A Barbier vs F Sieber |
| 0-1 | 50 | 2019 | European Team Championship (Women) | B25 Sicilian, Closed |
| 68. A Muetsch vs F Sieber |
| 0-1 | 90 | 2021 | DSB Women Squad Challenge | B25 Sicilian, Closed |
| 69. M Petrosyan vs F Sieber |
| 1-0 | 55 | 2021 | European Hybrid Qual | A15 English |
| 70. F Sieber vs M Petrosyan |
| 0-1 | 27 | 2021 | European Hybrid Qual | C45 Scotch Game |
| 71. A Muetsch vs F Sieber |
| 1-0 | 33 | 2021 | German Masters Women | B29 Sicilian, Nimzovich-Rubinstein |
| 72. Darja Babineca vs F Sieber |
| 0-1 | 33 | 2021 | European Championship (Women) | B94 Sicilian, Najdorf |
| 73. F Sieber vs S Tsolakidou |
| 0-1 | 33 | 2021 | European Championship (Women) | B23 Sicilian, Closed |
| 74. K Zeliantsova vs F Sieber |
| 1-0 | 41 | 2021 | European Championship (Women) | B40 Sicilian |
| 75. F Sieber vs R Levitan |
| 1-0 | 47 | 2021 | European Championship (Women) | C47 Four Knights |
Kibitzing
