| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 126. J Hartung-Nielsen vs G Gajewski |
| 0-1 | 42 | 2010 | European Championship | B43 Sicilian, Kan, 5.Nc3 |
| 127. J Hartung-Nielsen vs G Di Lazzaro |
| 1-0 | 41 | 2010 | European Championship | D04 Queen's Pawn Game |
| 128. J Rukavina vs J Hartung-Nielsen |
 | 1-0 | 16 | 2010 | European Championship | D48 Queen's Gambit Declined Semi-Slav, Meran |
| 129. J Hartung-Nielsen vs I Pejic |
| 1-0 | 48 | 2010 | European Championship | D04 Queen's Pawn Game |
| 130. D Lekic vs J Hartung-Nielsen |
| 1-0 | 28 | 2010 | European Championship | D85 Grunfeld |
| 131. J Hartung-Nielsen vs D Mihalinec |
| ½-½ | 55 | 2010 | European Championship | B73 Sicilian, Dragon, Classical |
| 132. P Hoffmann vs J Hartung-Nielsen |
| 0-1 | 40 | 2010 | European Championship | C24 Bishop's Opening |
| 133. J Hartung-Nielsen vs B Firat |
| 0-1 | 32 | 2010 | European Championship | C01 French, Exchange |
| 134. G Szamoskozi vs J Hartung-Nielsen |
| 1-0 | 14 | 2010 | European Championship | C45 Scotch Game |
| 135. J Hartung-Nielsen vs M Stefan |
| 0-1 | 47 | 2010 | European Championship | A48 King's Indian |
| 136. D L Rose vs J Hartung-Nielsen |
| 0-1 | 22 | 2015 | Politiken Cup | B27 Sicilian |
| 137. W H Philipsen vs J Hartung-Nielsen |
| 0-1 | 32 | 2015 | Politiken Cup | B21 Sicilian, 2.f4 and 2.d4 |
| 138. J Hartung-Nielsen vs P S Stuhr |
| 0-1 | 28 | 2015 | Politiken Cup | A41 Queen's Pawn Game (with ...d6) |
| 139. J Hartung-Nielsen vs R E Andersen |
| 0-1 | 37 | 2015 | Politiken Cup | D20 Queen's Gambit Accepted |
| 140. Mikkel Andreassen vs J Hartung-Nielsen |
| 0-1 | 26 | 2015 | Politiken Cup | D34 Queen's Gambit Declined, Tarrasch |
| 141. J Hartung-Nielsen vs I Skovgaard |
| ½-½ | 76 | 2015 | Politiken Cup | D12 Queen's Gambit Declined Slav |
| 142. V Taksrud vs J Hartung-Nielsen |
| ½-½ | 57 | 2015 | Politiken Cup | D34 Queen's Gambit Declined, Tarrasch |
| 143. J Hartung-Nielsen vs S Degerfeldt |
| 1-0 | 41 | 2015 | Politiken Cup | D30 Queen's Gambit Declined |
| 144. U Larsen vs J Hartung-Nielsen |
| 0-1 | 13 | 2015 | Politiken Cup | A07 King's Indian Attack |
| 145. J Hartung-Nielsen vs C Hoi |
| 0-1 | 41 | 2015 | Politiken Cup | D25 Queen's Gambit Accepted |
| 146. J A Gutierrez Bolado vs J Hartung-Nielsen |
| 0-1 | 23 | 2017 | Xtracon Chess Open | B20 Sicilian |
| 147. J Hartung-Nielsen vs A B Kvaloy |
| 1-0 | 37 | 2017 | Xtracon Chess Open | E91 King's Indian |
| 148. P Lindgren vs J Hartung-Nielsen |
| ½-½ | 67 | 2017 | Xtracon Chess Open | D30 Queen's Gambit Declined |
| 149. J Hartung-Nielsen vs J Kramer |
| 1-0 | 48 | 2017 | Xtracon Chess Open | B22 Sicilian, Alapin |
| 150. J Christiansen vs J Hartung-Nielsen |
| 1-0 | 41 | 2017 | Xtracon Chess Open | B27 Sicilian |
Kibitzing
