| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. A Jaunooby vs H Olson |
 | 1-0 | 34 | 2011 | Hastings 2011/12 | A48 King's Indian |
| 2. H Olson vs M Pooley |
| 1-0 | 49 | 2011 | Hastings 2011/12 | B00 Uncommon King's Pawn Opening |
| 3. H Olson vs R Britton |
| ½-½ | 47 | 2011 | Hastings 2011/12 | B52 Sicilian, Canal-Sokolsky (Rossolimo) Attack |
| 4. N Surendran vs H Olson |
| 1-0 | 34 | 2011 | Hastings 2011/12 | E69 King's Indian, Fianchetto, Classical Main line |
| 5. H Olson vs M Repplinger |
| 1-0 | 36 | 2012 | Hastings 2011/12 | A07 King's Indian Attack |
| 6. J Burnett vs H Olson |
| 1-0 | 50 | 2012 | Hastings 2011/12 | E69 King's Indian, Fianchetto, Classical Main line |
| 7. Sahiti P Lakshmi vs H Olson |
| ½-½ | 13 | 2012 | Hastings 2011/12 | B33 Sicilian |
| 8. H Olson vs A Hagesaether |
| ½-½ | 28 | 2012 | Hastings 2011/12 | A07 King's Indian Attack |
| 9. J N Sugden vs H Olson |
| ½-½ | 57 | 2012 | Hastings 2011/12 | B25 Sicilian, Closed |
| 10. M Congiu vs H Olson |
| 1-0 | 47 | 2018 | 4NCL 2017/18 | C55 Two Knights Defense |
| 11. H Olson vs A Stewart |
| 1-0 | 82 | 2018 | 4NCL 2017/18 | A48 King's Indian |
| 12. H Olson vs C Russell |
| ½-½ | 51 | 2018 | 4NCL 2017/18 | C00 French Defense |
| 13. A Zaitsev vs H Olson |
| ½-½ | 23 | 2018 | Pardubice Open-A | C23 Bishop's Opening |
| 14. H Olson vs G Gutman |
| ½-½ | 54 | 2018 | Pardubice Open-A | E11 Bogo-Indian Defense |
| 15. M Vokac vs H Olson |
| 1-0 | 31 | 2018 | Pardubice Open-A | D51 Queen's Gambit Declined |
| 16. M Cerveny vs H Olson |
| 1-0 | 38 | 2018 | Pardubice Open-A | A06 Reti Opening |
| 17. H Olson vs C Blodig |
| 1-0 | 65 | 2018 | Pardubice Open-A | A81 Dutch |
| 18. S Domogaev vs H Olson |
| ½-½ | 42 | 2018 | Pardubice Open-A | D36 Queen's Gambit Declined, Exchange, Positional line, 6.Qc2 |
| 19. H Olson vs M Swicarz |
| 0-1 | 25 | 2018 | Pardubice Open-A | D38 Queen's Gambit Declined, Ragozin Variation |
| 20. N Shpanko vs H Olson |
| 1-0 | 20 | 2018 | Pardubice Open-A | C41 Philidor Defense |
| 21. H Olson vs J Tan |
| 0-1 | 35 | 2019 | 4NCL Div 1a 2018/19 | B06 Robatsch |
| 22. H P Hansen vs H Olson |
| 0-1 | 40 | 2019 | 4NCL Div 1a 2018/19 | A13 English |
| 23. H Olson vs M Sebenik |
| 0-1 | 37 | 2019 | European Team Championship | A46 Queen's Pawn Game |
| 24. N Georgiadis vs H Olson |
| 1-0 | 32 | 2019 | European Team Championship | C65 Ruy Lopez, Berlin Defense |
| 25. H Olson vs F Ashiku |
| 0-1 | 42 | 2019 | European Team Championship | A81 Dutch |
Kibitzing
