| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. F Preuss vs C Harstad |
| 0-1 | 29 | 2004 | Politiken Cup | C44 King's Pawn Game |
| 27. C Harstad vs A Asberg |
| 0-1 | 26 | 2004 | Politiken Cup | A57 Benko Gambit |
| 28. S Eddy vs C Harstad |
| 1-0 | 19 | 2004 | Politiken Cup | A45 Queen's Pawn Game |
| 29. D Popovic vs C Harstad |
| 1-0 | 37 | 2006 | Pula Open | C80 Ruy Lopez, Open |
| 30. C Harstad vs T Petrik |
| 0-1 | 59 | 2007 | Pula Open | E20 Nimzo-Indian |
| 31. C Harstad vs B G Christensen |
| 0-1 | 49 | 2009 | Politiken Cup | A89 Dutch, Leningrad, Main Variation with Nc6 |
| 32. C Harstad vs J Ask |
| 1-0 | 46 | 2009 | Politiken Cup | E83 King's Indian, Samisch |
| 33. A Bruehl vs C Harstad |
| 1-0 | 25 | 2009 | Politiken Cup | E67 King's Indian, Fianchetto |
| 34. C Harstad vs N Laursen |
| 0-1 | 33 | 2009 | Politiken Cup | A70 Benoni, Classical with 7.Nf3 |
| 35. C Harstad vs M M Ivanov |
| ½-½ | 39 | 2015 | Karpos Open | D20 Queen's Gambit Accepted |
| 36. T Yanev vs C Harstad |
| 1-0 | 55 | 2015 | Karpos Open | E67 King's Indian, Fianchetto |
| 37. C Harstad vs T Tuncer |
 | 0-1 | 47 | 2015 | Karpos Open | E94 King's Indian, Orthodox |
| 38. C Harstad vs P Nguyen |
| 0-1 | 27 | 2015 | London Chess Classic Open | A42 Modern Defense, Averbakh System |
| 39. C Harstad vs L Dror |
| 1-0 | 34 | 2015 | London Chess Classic Open | E97 King's Indian |
| 40. A Ethelontis vs C Harstad |
| 1-0 | 53 | 2015 | London Chess Classic Open | A15 English |
| 41. M Brugo vs C Harstad |
| ½-½ | 54 | 2015 | London Chess Classic Open | E81 King's Indian, Samisch |
| 42. C Harstad vs K Jamroz |
| 1-0 | 44 | 2015 | London Chess Classic Open | A65 Benoni, 6.e4 |
| 43. F Stamos vs C Harstad |
| 1-0 | 44 | 2015 | London Chess Classic Open | A49 King's Indian, Fianchetto without c4 |
| 44. C Harstad vs D J Staples |
| 0-1 | 27 | 2015 | London Chess Classic Open | D67 Queen's Gambit Declined, Orthodox Defense, Bd3 line |
| 45. M Chen vs C Harstad |
| ½-½ | 31 | 2015 | London Chess Classic Open | A25 English |
| 46. C Harstad vs G Ainsworth |
| 1-0 | 30 | 2015 | London Chess Classic Open | D05 Queen's Pawn Game |
| 47. C Harstad vs F Englert |
| 0-1 | 53 | 2017 | Copenhagen Chess Challenge | D31 Queen's Gambit Declined |
| 48. R Reimanis vs C Harstad |
| 1-0 | 37 | 2017 | Copenhagen Chess Challenge | D70 Neo-Grunfeld Defense |
| 49. E Serrano Salvador vs C Harstad |
| 1-0 | 31 | 2019 | Prague Open | A70 Benoni, Classical with 7.Nf3 |
| 50. C Harstad vs E Csiki |
| 0-1 | 17 | 2019 | Prague Open | D91 Grunfeld, 5.Bg5 |
Kibitzing
