Game |
| Result | Moves |
Year | Event/Locale | Opening |
101. R C Codru vs R G Koellner |
| 0-1 | 24 | 2024 | Cristina Foisor Memorial Rapid | A46 Queen's Pawn Game |
102. R G Koellner vs D Minescu |
| 1-0 | 35 | 2024 | Cristina Foisor Memorial Rapid | A41 Queen's Pawn Game (with ...d6) |
103. D C Radu vs R G Koellner |
| 0-1 | 35 | 2024 | Cristina Foisor Memorial Rapid | B07 Pirc |
104. R G Koellner vs S Poltorak |
| 1-0 | 44 | 2024 | Cristina Foisor Memorial Rapid | A48 King's Indian |
105. B Maksimovic vs R G Koellner |
| ½-½ | 62 | 2024 | Cristina Foisor Memorial Rapid | A55 Old Indian, Main line |
106. R G Koellner vs Motylev |
| ½-½ | 24 | 2024 | Cristina Foisor Memorial Rapid | D05 Queen's Pawn Game |
107. B Deac vs R G Koellner |
| 1-0 | 58 | 2024 | Cristina Foisor Memorial Rapid | A46 Queen's Pawn Game |
108. R G Koellner vs L Filip |
| 0-1 | 69 | 2024 | Cristina Foisor Memorial Rapid | A40 Queen's Pawn Game |
109. R G Koellner vs I Toma |
| 1-0 | 43 | 2024 | Cristina Foisor Memorial Rapid | D05 Queen's Pawn Game |
110. A Hambleton vs R G Koellner |
| 1-0 | 151 | 2024 | Online Blitz Game | A41 Queen's Pawn Game (with ...d6) |
111. D Wisnet vs R G Koellner |
| 0-1 | 74 | 2024 | Bundesliga 2024/25 | C78 Ruy Lopez |
112. R G Koellner vs M Rafiee |
| 1-0 | 29 | 2024 | Bundesliga 2024/25 | B06 Robatsch |
113. R G Koellner vs B Bui |
| 0-1 | 28 | 2024 | Rainer Radtke Memorial | D05 Queen's Pawn Game |
114. R G Koellner vs U Shefer |
| ½-½ | 75 | 2024 | Rainer Radtke Memorial | A45 Queen's Pawn Game |
115. C Polster vs R G Koellner |
| 0-1 | 34 | 2024 | Rainer Radtke Memorial | C41 Philidor Defense |
116. R G Koellner vs D Prazak |
| 1-0 | 41 | 2024 | Rainer Radtke Memorial | D02 Queen's Pawn Game |
117. P Stremavicius vs R G Koellner |
| 0-1 | 72 | 2024 | Rainer Radtke Memorial | B07 Pirc |
118. R G Koellner vs A Tarhan |
| 1-0 | 59 | 2024 | Rainer Radtke Memorial | D02 Queen's Pawn Game |
119. S Gumularz vs R G Koellner |
| ½-½ | 25 | 2024 | Rainer Radtke Memorial | A20 English |
120. R G Koellner vs M Petrov |
| ½-½ | 23 | 2024 | Rainer Radtke Memorial | A46 Queen's Pawn Game |
121. T Kocharin vs R G Koellner |
| ½-½ | 122 | 2025 | Bundesliga 2024/25 | C41 Philidor Defense |
122. R G Koellner vs T Gungl |
| 1-0 | 31 | 2025 | Bundesliga 2024/25 | D02 Queen's Pawn Game |
123. A Kovacevic vs R G Koellner |
| ½-½ | 15 | 2025 | Bundesliga 2024/25 | A06 Reti Opening |