| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 451. B Ostenstad vs O A Stubberud |
| 1-0 | 39 | 2013 | Norwegian Championship | E97 King's Indian |
| 452. B Ostenstad vs F Urkedal |
| 1-0 | 54 | 2013 | Norwegian Championship | E15 Queen's Indian |
| 453. L Mihasi vs B Ostenstad |
| 0-1 | 44 | 2013 | European Club Cup | B28 Sicilian, O'Kelly Variation |
| 454. D Raznikov vs B Ostenstad |
| 0-1 | 71 | 2013 | European Club Cup | E54 Nimzo-Indian, 4.e3, Gligoric System |
| 455. B Ostenstad vs I Jones |
| 1-0 | 38 | 2013 | European Club Cup | A54 Old Indian, Ukrainian Variation, 4.Nf3 |
| 456. S Williams vs B Ostenstad |
| 0-1 | 31 | 2013 | European Club Cup | E61 King's Indian |
| 457. B Ostenstad vs A Sumets |
| ½-½ | 38 | 2013 | European Club Cup | D45 Queen's Gambit Declined Semi-Slav |
| 458. R Palliser vs B Ostenstad |
| 0-1 | 31 | 2013 | European Club Cup | C03 French, Tarrasch |
| 459. B Ostenstad vs Nakamura |
 | 0-1 | 42 | 2013 | European Club Cup | E90 King's Indian |
| 460. B Ostenstad vs M Roiz |
| ½-½ | 44 | 2014 | European Club Cup | D12 Queen's Gambit Declined Slav |
| 461. A Hobber vs B Ostenstad |
| 0-1 | 37 | 2018 | Norwegian Championship | A48 King's Indian |
| 462. F Urkedal vs B Ostenstad |
| ½-½ | 37 | 2018 | Norwegian Championship | D37 Queen's Gambit Declined |
| 463. B Ostenstad vs B Arvola Notkevich |
| 0-1 | 64 | 2018 | Norwegian Championship | A00 Uncommon Opening |
| 464. B Ostenstad vs K Holm |
| 0-1 | 29 | 2018 | Norwegian Championship | D44 Queen's Gambit Declined Semi-Slav |
| 465. F Elsness vs B Ostenstad |
| ½-½ | 46 | 2018 | Norwegian Championship | A14 English |
| 466. B Ostenstad vs J Haug |
| ½-½ | 77 | 2018 | Norwegian Championship | D38 Queen's Gambit Declined, Ragozin Variation |
| 467. L Tallaksen vs B Ostenstad |
| 0-1 | 69 | 2018 | Norwegian Championship | E12 Queen's Indian |
| 468. B Ostenstad vs J Christiansen |
| ½-½ | 24 | 2018 | Norwegian Championship | A86 Dutch |
| 469. J L Hammer vs B Ostenstad |
| 1-0 | 27 | 2018 | Norwegian Championship | E48 Nimzo-Indian, 4.e3 O-O 5.Bd3 d5 |
| 470. A Tari vs B Ostenstad |
| ½-½ | 25 | 2023 | Norwegian Championship | C02 French, Advance |
| 471. B Ostenstad vs L O Hauge |
| 0-1 | 41 | 2023 | Norwegian Championship | A06 Reti Opening |
| 472. L Tallaksen vs B Ostenstad |
| 0-1 | 33 | 2023 | Norwegian Championship | B32 Sicilian |
| 473. B Ostenstad vs J P Wallace |
| 1-0 | 50 | 2023 | Norwegian Championship | A14 English |
| 474. B Haldorsen vs B Ostenstad |
| 1-0 | 48 | 2023 | Norwegian Championship | C02 French, Advance |
| 475. J L Hammer vs B Ostenstad |
| ½-½ | 33 | 2023 | Norwegian Championship | E46 Nimzo-Indian |
Kibitzing
