| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 51. C Grubert vs M Nielsen |
| 1-0 | 39 | 2000 | Politiken Cup | B02 Alekhine's Defense |
| 52. M Nielsen vs P Tjornsted |
| 1-0 | 83 | 2000 | Politiken Cup | B06 Robatsch |
| 53. L Laustsen vs M Nielsen |
| 1-0 | 33 | 2001 | Politiken Cup | A15 English |
| 54. M Nielsen vs B Skjoldan |
| ½-½ | 23 | 2001 | Politiken Cup | B33 Sicilian |
| 55. H H Schmidt vs M Nielsen |
| 0-1 | 57 | 2001 | Politiken Cup | D12 Queen's Gambit Declined Slav |
| 56. M Nielsen vs F B Nielsen |
| ½-½ | 28 | 2001 | Politiken Cup | C28 Vienna Game |
| 57. H Rasmussen vs M Nielsen |
| ½-½ | 21 | 2001 | Politiken Cup | D13 Queen's Gambit Declined Slav, Exchange Variation |
| 58. T Lynge vs M Nielsen |
| 0-1 | 45 | 2001 | Politiken Cup | B02 Alekhine's Defense |
| 59. M Nielsen vs H K Simonsen |
| 0-1 | 28 | 2001 | Politiken Cup | B93 Sicilian, Najdorf, 6.f4 |
| 60. V Kotiranta vs M Nielsen |
| 0-1 | 52 | 2004 | Politiken Cup | A06 Reti Opening |
| 61. M Nielsen vs J Hvenekilde |
| 0-1 | 37 | 2004 | Politiken Cup | C28 Vienna Game |
| 62. S Asbjornsson vs M Nielsen |
| 0-1 | 29 | 2004 | Politiken Cup | A31 English, Symmetrical, Benoni Formation |
| 63. M Nielsen vs C Marzano |
| 0-1 | 62 | 2005 | Politiken Cup | B07 Pirc |
| 64. M Nielsen vs K Looijmans |
| 1-0 | 45 | 2005 | Politiken Cup | B21 Sicilian, 2.f4 and 2.d4 |
| 65. C Holst vs M Nielsen |
| 1-0 | 38 | 2005 | Politiken Cup | A57 Benko Gambit |
| 66. M Nielsen vs A Nilsson |
| 0-1 | 32 | 2005 | Politiken Cup | C05 French, Tarrasch |
| 67. M Nielsen vs T Thingstad |
| 1-0 | 23 | 2006 | Politiken Cup | C57 Two Knights |
| 68. A Muratet Casadevall vs M Nielsen |
| 1-0 | 42 | 2006 | Politiken Cup | B03 Alekhine's Defense |
| 69. M Nielsen vs J Gade |
| 1-0 | 36 | 2006 | Politiken Cup | B21 Sicilian, 2.f4 and 2.d4 |
| 70. H Willumsen vs M Nielsen |
| 1-0 | 29 | 2006 | Politiken Cup | B03 Alekhine's Defense |
| 71. M Nielsen vs O E Jorgensen |
| 1-0 | 17 | 2006 | Politiken Cup | B21 Sicilian, 2.f4 and 2.d4 |
| 72. A Wiwe vs M Nielsen |
| 1-0 | 25 | 2006 | Politiken Cup | B05 Alekhine's Defense, Modern |
| 73. M Nielsen vs J H Hansen |
| 1-0 | 21 | 2006 | Politiken Cup | B21 Sicilian, 2.f4 and 2.d4 |
| 74. D Dragicevic vs M Nielsen |
| 1-0 | 28 | 2006 | Politiken Cup | E91 King's Indian |
| 75. M Nielsen vs J Henrichsen |
| ½-½ | 45 | 2006 | Politiken Cup | B21 Sicilian, 2.f4 and 2.d4 |
Kibitzing
