| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 201. A Einarsson vs C O'Donnell |
| 0-1 | 32 | 2024 | Icelandic Team Championship 2023/24 | D31 Queen's Gambit Declined |
| 202. C O'Donnell vs T Bjornsson |
| 1-0 | 40 | 2024 | Icelandic Team Championship 2023/24 | E08 Catalan, Closed |
| 203. C O'Donnell vs N Sverrisson |
| ½-½ | 32 | 2024 | Icelandic Team Championship 2023/24 | E04 Catalan, Open, 5.Nf3 |
| 204. C O'Donnell vs I Johannesson |
| 0-1 | 51 | 2024 | Icelandic Team Championship 2023/24 | D51 Queen's Gambit Declined |
| 205. C O'Donnell vs M Warmerdam |
| 0-1 | 33 | 2024 | Dutch League 2023/24 | D35 Queen's Gambit Declined |
| 206. C O'Donnell vs J Jackson |
| ½-½ | 44 | 2024 | 4NCL 2024/25 | E62 King's Indian, Fianchetto |
| 207. S Swanson vs C O'Donnell |
| 0-1 | 47 | 2024 | 4NCL 2024/25 | B13 Caro-Kann, Exchange |
| 208. J Murawski vs C O'Donnell |
| 0-1 | 37 | 2024 | London Classic Masters | E42 Nimzo-Indian, 4.e3 c5, 5.Ne2 (Rubinstein) |
| 209. C O'Donnell vs V Barnaure |
| 0-1 | 34 | 2024 | London Classic Masters | E00 Queen's Pawn Game |
| 210. A Hill vs C O'Donnell |
| 1-0 | 64 | 2024 | London Classic Masters | D35 Queen's Gambit Declined |
| 211. C O'Donnell vs D H Maycock Bates |
| 1-0 | 56 | 2025 | 4NCL 2024/25 | A13 English |
| 212. H Grieve vs C O'Donnell |
| 1-0 | 25 | 2025 | 4NCL 2024/25 | C43 Petrov, Modern Attack |
| 213. E Mirzoeva vs C O'Donnell |
| ½-½ | 51 | 2025 | 4NCL 2024/25 | A06 Reti Opening |
| 214. C O'Donnell vs P J Sowray |
| ½-½ | 42 | 2025 | 4NCL 2024/25 | B06 Robatsch |
| 215. H Li vs C O'Donnell |
| 0-1 | 50 | 2025 | 4NCL 2024/25 | B12 Caro-Kann Defense |
| 216. C O'Donnell vs G Morea |
| 1-0 | 43 | 2025 | 4NCL 2024/25 | E73 King's Indian |
| 217. C O'Donnell vs R Pert |
| ½-½ | 83 | 2025 | 4NCL 2024/25 | D30 Queen's Gambit Declined |
Kibitzing
