| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. M M Jacobsen vs T Rostgaard |
| 0-1 | 45 | 2017 | Copenhagen Chess Challenge | C65 Ruy Lopez, Berlin Defense |
| 27. M M Jacobsen vs M Kleinman |
| ½-½ | 30 | 2017 | Copenhagen Chess Challenge | D85 Grunfeld |
| 28. J O Fries-Nielsen vs M M Jacobsen |
| ½-½ | 46 | 2017 | Copenhagen Chess Challenge | D02 Queen's Pawn Game |
| 29. M M Jacobsen vs S Stojanovski |
| 1-0 | 38 | 2017 | Copenhagen Chess Challenge | D31 Queen's Gambit Declined |
| 30. D Arman vs M M Jacobsen |
| ½-½ | 64 | 2017 | Copenhagen Chess Challenge | D00 Queen's Pawn Game |
| 31. M M Jacobsen vs J Aabling-Thomsen |
| 0-1 | 63 | 2017 | Copenhagen Chess Challenge | B06 Robatsch |
| 32. T O'Gorman vs M M Jacobsen |
| 0-1 | 42 | 2017 | Copenhagen Chess Challenge | C96 Ruy Lopez, Closed |
| 33. J B Bjerre vs M M Jacobsen |
| 0-1 | 33 | 2017 | Fredericia IM | B18 Caro-Kann, Classical |
| 34. M M Jacobsen vs J B Bjerre |
| 0-1 | 30 | 2017 | Koege Anniversary | A36 English |
| 35. M M Jacobsen vs D Christophersen |
| 1-0 | 22 | 2017 | Xtracon Chess Open | A80 Dutch |
| 36. M M Jacobsen vs Hjartarson |
| 0-1 | 50 | 2017 | Xtracon Chess Open | E11 Bogo-Indian Defense |
| 37. F Preuss vs M M Jacobsen |
| 0-1 | 31 | 2017 | Xtracon Chess Open | A02 Bird's Opening |
| 38. L Crevatin vs M M Jacobsen |
| 0-1 | 31 | 2017 | Xtracon Chess Open | D31 Queen's Gambit Declined |
| 39. M M Jacobsen vs Ghayth Tabaa |
| 1-0 | 54 | 2017 | Xtracon Chess Open | A41 Queen's Pawn Game (with ...d6) |
| 40. I K Sukandar vs M M Jacobsen |
| 1-0 | 37 | 2017 | Xtracon Chess Open | D02 Queen's Pawn Game |
| 41. M M Jacobsen vs K Verhasselt |
| 0-1 | 61 | 2017 | Xtracon Chess Open | D96 Grunfeld, Russian Variation |
| 42. C Grundekjon vs M M Jacobsen |
| 1-0 | 37 | 2017 | Xtracon Chess Open | A45 Queen's Pawn Game |
| 43. M M Jacobsen vs J Alfven |
| 1-0 | 29 | 2017 | Xtracon Chess Open | E61 King's Indian |
| 44. S Hakansson vs M M Jacobsen |
| 0-1 | 28 | 2017 | Xtracon Chess Open | A45 Queen's Pawn Game |
| 45. M M Jacobsen vs G Kjartansson |
| 0-1 | 29 | 2018 | Reykjavik Open | A50 Queen's Pawn Game |
| 46. P Andrason vs M M Jacobsen |
| 0-1 | 31 | 2018 | Reykjavik Open | A43 Old Benoni |
| 47. M M Jacobsen vs S Thavandiran |
| 0-1 | 101 | 2018 | Reykjavik Open | A47 Queen's Indian |
| 48. J Alderson vs M M Jacobsen |
| 0-1 | 30 | 2018 | Reykjavik Open | A15 English |
| 49. M M Jacobsen vs M Brunello |
| 1-0 | 21 | 2018 | Reykjavik Open | D02 Queen's Pawn Game |
| 50. J Bartholomew vs M M Jacobsen |
| 1-0 | 49 | 2018 | Reykjavik Open | D13 Queen's Gambit Declined Slav, Exchange Variation |
Kibitzing
