| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 51. D Zagorskis vs J A Nilssen |
| ½-½ | 19 | 1998 | Politiken Cup | E25 Nimzo-Indian, Samisch |
| 52. J A Nilssen vs McShane |
| 0-1 | 35 | 1998 | Politiken Cup | E97 King's Indian |
| 53. F T Naes vs J A Nilssen |
| 1-0 | 40 | 1998 | Politiken Cup | A07 King's Indian Attack |
| 54. J A Nilssen vs H Nielsen |
| 1-0 | 65 | 1998 | Politiken Cup | D43 Queen's Gambit Declined Semi-Slav |
| 55. N Koskela vs J A Nilssen |
| 0-1 | 24 | 1998 | Politiken Cup | B74 Sicilian, Dragon, Classical |
| 56. J A Nilssen vs A Schmitz |
| 0-1 | 46 | 1998 | Politiken Cup | D24 Queen's Gambit Accepted |
| 57. J A Nilssen vs T Vihinen |
| 1-0 | 47 | 1998 | Politiken Cup | E94 King's Indian, Orthodox |
| 58. J A Nilssen vs K Edvardsson |
| 0-1 | 57 | 1998 | Politiken Cup | E15 Queen's Indian |
| 59. J A Nilssen vs N S Nilsson |
| 1-0 | 32 | 1998 | Politiken Cup | A04 Reti Opening |
| 60. Nisipeanu vs J A Nilssen |
| 1-0 | 37 | 1998 | Elista Olympiad | B32 Sicilian |
| 61. A Dyce vs J A Nilssen |
| 0-1 | 34 | 1998 | Elista Olympiad | B31 Sicilian, Rossolimo Variation |
| 62. J A Nilssen vs B Lalic |
| ½-½ | 50 | 1998 | Elista Olympiad | D11 Queen's Gambit Declined Slav |
| 63. M Hansen vs J A Nilssen |
| 0-1 | 25 | 1999 | Politiken Cup | B30 Sicilian |
| 64. J A Nilssen vs B H Nielsen |
| 1-0 | 62 | 1999 | Politiken Cup | E18 Queen's Indian, Old Main line, 7.Nc3 |
| 65. J A Nilssen vs S B Hansen |
| 0-1 | 53 | 1999 | Politiken Cup | E47 Nimzo-Indian, 4.e3 O-O 5.Bd3 |
| 66. M Lonborg vs J A Nilssen |
| 0-1 | 33 | 1999 | Politiken Cup | B32 Sicilian |
| 67. J A Nilssen vs T Johansen |
| 1-0 | 36 | 1999 | Politiken Cup | D11 Queen's Gambit Declined Slav |
| 68. C Ward vs J A Nilssen |
| 1-0 | 39 | 1999 | Politiken Cup | E32 Nimzo-Indian, Classical |
| 69. J A Nilssen vs D Gunter |
| 1-0 | 30 | 1999 | Politiken Cup | E73 King's Indian |
| 70. K van der Weide vs J A Nilssen |
| ½-½ | 54 | 1999 | Politiken Cup | A07 King's Indian Attack |
| 71. J A Nilssen vs H Danielsen |
| 0-1 | 40 | 1999 | Politiken Cup | A88 Dutch, Leningrad, Main Variation with c6 |
| 72. D Dongart vs J A Nilssen |
| ½-½ | 35 | 1999 | Politiken Cup | B32 Sicilian |
| 73. J A Nilssen vs P B Petersen |
| ½-½ | 55 | 1999 | Politiken Cup | E41 Nimzo-Indian |
| 74. J A Nilssen vs A Bering |
| 1-0 | 20 | 2000 | Politiken Cup | E42 Nimzo-Indian, 4.e3 c5, 5.Ne2 (Rubinstein) |
| 75. N Laursen vs J A Nilssen |
| 1-0 | 54 | 2000 | Politiken Cup | B25 Sicilian, Closed |
Kibitzing
