| 4 jul 2026 | Nielsen, Andre 2300 | Kierulf, Villum Brevick 2187 | 1-0 | C53 Italian Game: Classical Variation, La Bourdonnais Variation | Kandidat | 29 | Ver |
| 28 jun 2026 | Nielsen, Andre 2300 | Stanford, Sheila Barth 2149 | 1-0 | B37 Sicilian Defense: Accelerated Dragon, Maróczy Bind | Kandidat | 51 | Ver |
| 28 jun 2026 | Unneland, Mathias 2192 | Nielsen, Andre 2300 | 0-1 | E11 Bogo-Indian Defense: Grünfeld Variation | Kandidat | 41 | Ver |
| 28 jun 2026 | Nielsen, Andre 2300 | Skotheim, Andreas 2234 | ½-½ | C50 Italian Game: Giuoco Pianissimo, Italian Four Knights Variation | Kandidat | 36 | Ver |
| 28 jun 2026 | Fossheim, Yngve 2230 | Nielsen, Andre 2300 | ½-½ | C78 Ruy Lopez: Morphy Defense, Møller Variation | Kandidat | 55 | Ver |
| 28 jun 2026 | Nielsen, Andre 2300 | Oye-Stromberg, Alexander 2294 | 1-0 | C50 Italian Game: Paris Defense | Kandidat | 34 | Ver |
| 28 jun 2026 | Schouten, Mathias Lind 2294 | Nielsen, Andre 2300 | 0-1 | B12 Caro-Kann Defense: Advance Variation, Short Variation | Kandidat | 30 | Ver |
| 28 jun 2026 | Nielsen, Andre 2300 | Simonsen, David Mindestrommen 2138 | ½-½ | B93 Sicilian Defense: Najdorf Variation, Amsterdam Variation | Kandidat | 41 | Ver |
| 28 jun 2026 | Demac, Elias 2256 | Nielsen, Andre 2300 | ½-½ | E43 Nimzo-Indian Defense: St. Petersburg Variation | Kandidat | 37 | Ver |
| 8 mar 2026 | Nielsen, Andre 2279 | Tisdall, Jonathan D 2366 | 1-0 | B32 Sicilian Defense: Kalashnikov Variation | Eliteserien 2025-26 | 41 | Ver |
| 7 mar 2026 | Risting, Eivind Olav 2238 | Nielsen, Andre 2279 | 0-1 | E36 Nimzo-Indian Defense: Classical Variation, Romanishin Gambit | Eliteserien 2025-26 | 54 | Ver |
| 7 mar 2026 | Nielsen, Andre 2279 | Gullaksen, Eirik 2281 | ½-½ | B32 Sicilian Defense: Kalashnikov Variation | Eliteserien 2025-26 | 38 | Ver |
| 8 feb 2026 | Djurhuus, Rune 2383 | Nielsen, Andre 2301 | ½-½ | A22 English Opening: Carls-Bremen System | Eliteserien 2025-26 | 38 | Ver |
| 7 feb 2026 | Nielsen, Andre 2301 | Haarr, Jon Kristian 2248 | 0-1 | B10 Caro-Kann Defense: Endgame Offer | Eliteserien 2025-26 | 63 | Ver |
| 6 feb 2026 | Aamodt, Peder Marcus 2189 | Nielsen, Andre 2301 | 1-0 | E47 Nimzo-Indian Defense: Normal Variation | Eliteserien 2025-26 | 37 | Ver |
| 27 dic 2025 | Bronstein, Or 2470 | Nielsen, Andre 2261 | ½-½ | E44 Nimzo-Indian Defense: St. Petersburg Variation, American Variation | Rilton Cup | 61 | Ver |
| 2 nov 2025 | Nielsen, Andre 2267 | Hauge, Lars Oskar 2462 | 0-1 | C54 Italian Game: Classical Variation, Giuoco Pianissimo, with a6 | Eliteserien 2025-26 | 30 | Ver |
| 31 oct 2025 | Nielsen, Andre 2304 | Tallaksen, Levi Andre 2327 | ½-½ | C45 Scotch Game: Mieses Variation | Eliteserien 2025-26 | 40 | Ver |
| 19 oct 2025 | Wachinger, Nikolas 2456 | Nielsen, Andre 2304 | 1-0 | C78 Ruy Lopez: Morphy Defense, Møller Variation | European Chess Club Cup 2025 | Open Matches 1-16 | 59 | Ver |