| Apr 5, 2026 | Ostensen | ½–½ | Savitha Shri B | Fagernes International 2026 | English Opening: Four Knights System, Nimzowitsch Variation | |
| Apr 4, 2026 | Petriashvili | ½–½ | Ostensen | Fagernes International 2026 | King's Indian Attack: Symmetrical Defense | |
| Apr 3, 2026 | Ostensen | 1–0 | Kvaloy | Fagernes International 2026 | English Opening: Agincourt Defense | |
| Apr 2, 2026 | Ostensen | 1–0 | Bagwe Gaurang | Fagernes International 2026 | Italian Game: Two Knights Defense, Polerio Defense, Bishop Check Line | |
| Apr 1, 2026 | Andersen | 0–1 | Ostensen | Fagernes International 2026 | English Opening: Agincourt Defense, Wimpy System | |
| Apr 1, 2026 | Ostensen | ½–½ | Charvi A | Fagernes International 2026 | King's Indian Defense: Normal Variation, Standard Development | |
| Mar 31, 2026 | Yakubbaeva | ½–½ | Ostensen | Fagernes International 2026 | Four Knights Game: Scotch Variation, Schmid Defense | |
| Mar 30, 2026 | Ostensen | 1–0 | Mulhem | Fagernes International 2026 | Sicilian Defense: Delayed Alapin Variation, with e6 | |
| Mar 29, 2026 | Amundsen | 1–0 | Ostensen | Fagernes International 2026 | King's Indian Attack: Symmetrical Defense | |
| Mar 8, 2026 | Lindbol | ½–½ | Ostensen | Eliteserien 2025-26 | English Opening: King's English Variation, Two Knights Variation | |
| Mar 6, 2026 | Ostensen | ½–½ | Winter | PICF 2026 - KAREL JANECEK Open | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Mar 5, 2026 | Haring | ½–½ | Ostensen | PICF 2026 - KAREL JANECEK Open | Italian Game: Two Knights Defense, Modern Bishop's Opening | |
| Mar 4, 2026 | Ostensen | ½–½ | Krzyzanowski | PICF 2026 - KAREL JANECEK Open | English Opening: King's English Variation, Reversed Sicilian | |
| Mar 3, 2026 | Ostensen | ½–½ | Zhao | PICF 2026 - KAREL JANECEK Open | Sicilian Defense: O'Kelly Variation, Venice System | |
| Mar 2, 2026 | Saatdjian | 0–1 | Ostensen | PICF 2026 - KAREL JANECEK Open | King's Indian Defense: Orthodox Variation, Positional Defense | |
| Feb 8, 2026 | Ostensen | * | Gvein | Eliteserien 2025-26 | Caro-Kann Defense: Exchange Variation | |
| Feb 7, 2026 | Aamodt | 0–1 | Ostensen | Eliteserien 2025-26 | Old Indian Defense | |
| Feb 6, 2026 | Ostensen | 1–0 | Ingebretsen | Eliteserien 2025-26 | Ruy Lopez: Morphy Defense, Classical Defense Deferred | |
| Nov 16, 2025 | Simonsen | ½–½ | Ostensen | NM for barn og ungdom 2025 | Italian Game: Two Knights Defense, Modern Bishop's Opening | |
| Nov 16, 2025 | Khoo-Thwe | * | Ostensen | NM for barn og ungdom 2025 | Sicilian Defense: Closed, Anti-Sveshnikov Variation, with d6 | |
| Nov 15, 2025 | Ostensen | 1–0 | Wiger-Nordas | NM for barn og ungdom 2025 | King's Indian Defense: Semi-Averbakh System | |
| Nov 15, 2025 | Haug | 1–0 | Ostensen | NM for barn og ungdom 2025 | Queen's Pawn Game: Torre Attack, Grünfeld Variation, Main Line | |
| Nov 15, 2025 | Ostensen | 1–0 | Brattgjerd | NM for barn og ungdom 2025 | Catalan Opening: Closed, Main Line | |
| Nov 7, 2025 | Karvatskyi | ½–½ | Ostensen | Round 9: Karvatskyi, Oleksii - Ostensen, Nicolai Maxime | Sicilian Defense: Old Sicilian | |
| Nov 6, 2025 | Ostensen | ½–½ | Atoyan | Round 8: Ostensen, Nicolai Maxime - Atoyan, Alberto | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Nov 5, 2025 | Balint | ½–½ | Ostensen | Round 7: Balint, Peter - Ostensen, Nicolai Maxime | Zukertort Opening | |
| Nov 4, 2025 | Ostensen | 1–0 | Boci | Round 6: Ostensen, Nicolai Maxime - Boci, Mateu | Sicilian Defense: Lasker-Pelikan Variation, Sveshnikov Variation, Chelyabinsk Variation | |
| Oct 30, 2025 | Ostensen | ½–½ | Valcu | Round 2: Ostensen, Nicolai Maxime - Valcu, Lavinia | Ruy Lopez: Morphy Defense, Anderssen Variation | |
| Jul 27, 2025 | Cuartas | ½–½ | Ostensen | 41 Open Internacional d'Escacs d'Andorra 2025 | Ruy Lopez: Schliemann Defense | |
| Jul 26, 2025 | Ostensen | ½–½ | Czopor | 41 Open Internacional d'Escacs d'Andorra 2025 | King's Indian Defense: Semi-Averbakh System | |
| Jul 25, 2025 | Domingo Nunez | ½–½ | Ostensen | 41 Open Internacional d'Escacs d'Andorra 2025 | English Opening: Symmetrical Variation, Rubinstein Variation | |
| Jul 24, 2025 | Ostensen | 1–0 | Ruiz Bolanos | 41 Open Internacional d'Escacs d'Andorra 2025 | English Opening: Agincourt Defense | |
| Jul 23, 2025 | Christodoulaki | ½–½ | Ostensen | 41 Open Internacional d'Escacs d'Andorra 2025 | Four Knights Game: Scotch Variation, Schmid Defense | |
| Jul 22, 2025 | Ostensen | ½–½ | Gkoumas | 41 Open Internacional d'Escacs d'Andorra 2025 | French Defense: Tarrasch Variation, Open System, Euwe-Keres Line | |
| Jul 21, 2025 | Le Montagner | 0–1 | Ostensen | 41 Open Internacional d'Escacs d'Andorra 2025 | Sicilian Defense: Closed, Anti-Sveshnikov Variation, with Nf6 | |
| Jul 20, 2025 | Ostensen | ½–½ | Gowrishankar Jayaraj | 41 Open Internacional d'Escacs d'Andorra 2025 | Sicilian Defense: Moscow Variation, Sokolsky Variation | |
| Jul 19, 2025 | Afsari | 0–1 | Ostensen | 41 Open Internacional d'Escacs d'Andorra 2025 | Ruy Lopez: Closed, Chigorin Defense | |
| Apr 20, 2025 | Hillarp Persson | 1–0 | Ostensen | Fagernes International 2025 | King's Indian Defense: Petrosian Variation, Stein Defense | |
| Apr 19, 2025 | Ostensen | ½–½ | Vestby-Ellingsen | Fagernes International 2025 | Ruy Lopez: Morphy Defense, Anderssen Variation | |
| Apr 18, 2025 | Brattgjerd | 0–1 | Ostensen | Fagernes International 2025 | Ruy Lopez: Schliemann Defense | |
| Apr 17, 2025 | Ostensen | 1–0 | Torfoss | Fagernes International 2025 | English Opening: King's English Variation, Four Knights Variation, Korchnoi Line | |
| Apr 16, 2025 | Ostensen | 0–1 | Khoo-Thwe | Fagernes International 2025 | Ruy Lopez: Closed, Chigorin Defense | |
| Apr 16, 2025 | Haugen | 0–1 | Ostensen | Fagernes International 2025 | Italian Game: Two Knights Defense, Modern Bishop's Opening | |
| Apr 15, 2025 | Zhou | 1–0 | Ostensen | Fagernes International 2025 | Italian Game: Two Knights Defense, Modern Bishop's Opening | |
| Apr 14, 2025 | Ostensen | 1–0 | Arvola | Fagernes International 2025 | King's Indian Defense: Orthodox Variation, Positional Defense, Closed Line | |
| Apr 13, 2025 | Gopal G.N. | 1–0 | Ostensen | Fagernes International 2025 | Ruy Lopez: Closed, Pilnik Variation | |
| Dec 3, 2024 | Ostensen | 0–1 | Ubilava | XXI Open Internacional Gran Hotel Bali Grupo A 2024 | Sicilian Defense: Hyperaccelerated Dragon | |
| Dec 1, 2024 | Stella | 1–0 | Ostensen | XXI Open Internacional Gran Hotel Bali Grupo A 2024 | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Aug 31, 2024 | Hajialiyev | 0–1 | Ostensen | EYCC 2024 - O16 | Sicilian Defense: Alapin Variation, Smith-Morra Declined | |
| Aug 30, 2024 | Ostensen | 1–0 | Csernyik | EYCC 2024 - O16 | English Opening: Anglo-Indian Defense, Queen's Knight Variation | |
| Aug 29, 2024 | Kassios | ½–½ | Ostensen | EYCC 2024 - O16 | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Aug 28, 2024 | Ostensen | 0–1 | Pashikyan | EYCC 2024 - O16 | King's Indian Defense: Fianchetto Variation, Classical Fianchetto | |
| Aug 26, 2024 | Musial | 0–1 | Ostensen | EYCC 2024 - O16 | Sicilian Defense: Kalashnikov Variation | |
| Aug 25, 2024 | Ostensen | ½–½ | Salonen | EYCC 2024 - O16 | Zukertort Opening: Quiet System | |
| Aug 24, 2024 | Arnold | ½–½ | Ostensen | EYCC 2024 - O16 | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Aug 22, 2024 | Ser | ½–½ | Ostensen | EYCC 2024 - O16 | Rapport-Jobava System | |
| Aug 7, 2024 | Durak | 1–0 | Ostensen | RTU Open - A | Sicilian Defense: Alapin Variation | |
| Aug 6, 2024 | Ostensen | ½–½ | Ilamparthi A R | RTU Open - A | English Opening: Anglo-Indian Defense, Queen's Knight Variation | |
| Jul 6, 2024 | Myagmarsuren | ½–½ | Østensen | Landsturneringen i sjakk 2024 øvrige klasser | Sicilian Defense: Lasker-Pelikan Variation, Sveshnikov Variation, Chelyabinsk Variation | |
| Jul 5, 2024 | Østensen | ½–½ | Westrum | Landsturneringen i sjakk 2024 øvrige klasser | English Opening: Symmetrical Variation, Three Knights, Fianchetto Variation | |
| Jul 4, 2024 | Fiskaaen | 0–1 | Østensen | Landsturneringen i sjakk 2024 øvrige klasser | Mexican Defense | |
| Jul 3, 2024 | Østensen | 1–0 | Øye-Strømberg | Landsturneringen i sjakk 2024 øvrige klasser | English Opening: Agincourt Defense | |
| Jul 2, 2024 | Østensen | 1–0 | Hammari | Landsturneringen i sjakk 2024 øvrige klasser | English Opening: Agincourt Defense, Catalan Defense Accepted | |
| Jul 2, 2024 | Moen | ½–½ | Østensen | Landsturneringen i sjakk 2024 øvrige klasser | Sicilian Defense: Kalashnikov Variation | |
| Jul 1, 2024 | Melaa | 1–0 | Østensen | Landsturneringen i sjakk 2024 øvrige klasser | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Jun 30, 2024 | Østensen | 1–0 | Brattgjerd | Landsturneringen i sjakk 2024 øvrige klasser | English Opening: King's English Variation, Reversed Sicilian | |
| Jun 29, 2024 | Moen | ½–½ | Østensen | Landsturneringen i sjakk 2024 øvrige klasser | Sicilian Defense: Grand Prix Attack | |
| Mar 28, 2024 | Zhu | 1–0 | Ostensen | Round 2: Zhu, Jiner - Ostensen, Nicolai Maxime | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Feb 25, 2024 | Østensen | 1–0 | Amundsen | Kragerø Resort Chess International 2024 | English Opening: King's English Variation, Three Knights System | |
| Feb 24, 2024 | Unuk | 1–0 | Østensen | Kragerø Resort Chess International 2024 | Nimzo-Indian Defense: Normal Variation | |
| Feb 23, 2024 | Østensen | ½–½ | Grigoryan | Kragerø Resort Chess International 2024 | English Opening: King's English Variation, Kramnik-Shirov Counterattack | |
| Feb 22, 2024 | Nasuta | 1–0 | Østensen | Kragerø Resort Chess International 2024 | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Feb 21, 2024 | Østensen | 0–1 | Amar | Kragerø Resort Chess International 2024 | English Opening: Agincourt Defense | |
| Nov 19, 2023 | Ostensen | 1–0 | Swain | Norwegian Youth Championship 2023 C | English Opening: Anglo-Dutch Defense | |
| Nov 19, 2023 | Tenfjord Engelsen | 1–0 | Ostensen | Norwegian Youth Championship 2023 C | English Opening: Symmetrical Variation, Three Knights, Fianchetto Variation | |
| Nov 18, 2023 | Ostensen | ½–½ | Den Roover | Norwegian Youth Championship 2023 C | English Opening: Symmetrical Variation, Fianchetto Variation | |
| Nov 18, 2023 | Simonsen | ½–½ | Ostensen | Norwegian Youth Championship 2023 C | Sicilian Defense: Closed, Traditional | |
| Nov 17, 2023 | Ostensen | 1–0 | Flaten | Norwegian Youth Championship 2023 C | English Opening: Symmetrical Variation, Mecking Variation | |
| Nov 17, 2023 | Solskinnsbakk | 0–1 | Ostensen | Norwegian Youth Championship 2023 C | Sicilian Defense: Grand Prix Attack | |
| Nov 17, 2023 | Walgren | 0–1 | Ostensen | Norwegian Youth Championship 2023 C | Sicilian Defense: Kalashnikov Variation | |
| May 31, 2023 | Stanislav Zylka | 1–0 | Nicolai Maxime Østensen | Norway Chess Open 2023 | King's Indian Defense: Fianchetto Variation, Classical Main Line | |
| Feb 23, 2023 | Ostensen | 0–1 | Ragnarsson | Krageroe Resort Chess 2023 | Semi-Slav Defense: Chigorin Defense | |
| Feb 22, 2023 | Ohanyan | 1–0 | Ostensen | Krageroe Resort Chess 2023 | King's Indian Defense: Orthodox Variation | |
| — | Ostensen | 1–0 | Sandberg | Nordic Youth Chess Championship | Queen's Indian Defense: Classical Variation | |
| — | Ostensen | 0–1 | Salonen | Nordic Youth Chess Championship | Sicilian Defense: Moscow Variation | |
| — | Ostensen | ½–½ | Religa | Nordic Youth Chess Championship | Sicilian Defense: Nimzowitsch Variation, Advance Variation | |
| — | Olsen | 1–0 | Ostensen | Nordic Youth Chess Championship | King's Indian Defense: Normal Variation, Standard Development | |
| — | Davidsen | ½–½ | Ostensen | Nordic Youth Chess Championship | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| — | Slavensky | 0–1 | Ostensen | Nordic Youth Chess Championship | Queen's Gambit Declined: Ragozin Defense | |