| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. P Makoli vs H Olson |
| ½-½ | 62 | 2019 | European Team Championship | C65 Ruy Lopez, Berlin Defense |
| 27. H Olson vs B Thorfinnsson |
| 0-1 | 55 | 2019 | European Team Championship | A48 King's Indian |
| 28. H Olson vs N Djukic |
| 0-1 | 30 | 2019 | European Team Championship | A48 King's Indian |
| 29. H Olson vs T Laurusas |
| 0-1 | 28 | 2019 | European Team Championship | A48 King's Indian |
| 30. T Khoury vs H Olson |
| ½-½ | 46 | 2021 | British Championship | C45 Scotch Game |
| 31. H Olson vs S Sucikova |
| ½-½ | 64 | 2021 | British Championship | A07 King's Indian Attack |
| 32. R Starley vs H Olson |
 | 0-1 | 59 | 2021 | British Championship | C67 Ruy Lopez |
| 33. H Olson vs K Arkell |
| ½-½ | 43 | 2021 | British Championship | A46 Queen's Pawn Game |
| 34. N Bradbury vs H Olson |
| 0-1 | 37 | 2021 | British Championship | D30 Queen's Gambit Declined |
| 35. H Olson vs D Gormally |
| ½-½ | 52 | 2021 | British Championship | D78 Neo-Grunfeld, 6.O-O c6 |
| 36. H Olson vs M R Harvey |
| 0-1 | 54 | 2021 | British Championship | A88 Dutch, Leningrad, Main Variation with c6 |
| 37. L Head vs H Olson |
| 0-1 | 100 | 2021 | British Championship | D50 Queen's Gambit Declined |
| 38. H Olson vs A Ledger |
| 1-0 | 30 | 2021 | British Championship | D02 Queen's Pawn Game |
| 39. H Olson vs A Dunnington |
| ½-½ | 14 | 2022 | Edinburgh Bicentenary IM | B06 Robatsch |
| 40. V Sanal vs H Olson |
| 1-0 | 52 | 2022 | Chennai Olympiad | C84 Ruy Lopez, Closed |
| 41. H Olson vs Matola Ernest |
| 1-0 | 33 | 2022 | Chennai Olympiad | C42 Petrov Defense |
| 42. H Olson vs L Krysa |
| 0-1 | 28 | 2022 | Chennai Olympiad | E04 Catalan, Open, 5.Nf3 |
| 43. M Abdelazeez vs H Olson |
| ½-½ | 46 | 2022 | Chennai Olympiad | C45 Scotch Game |
| 44. N Noritsyn vs H Olson |
| 0-1 | 40 | 2022 | Chennai Olympiad | C90 Ruy Lopez, Closed |
| 45. S L Mohamed vs H Olson |
| 0-1 | 62 | 2022 | Chennai Olympiad | D00 Queen's Pawn Game |
| 46. H Olson vs L Draskovic |
| ½-½ | 40 | 2022 | Chennai Olympiad | A49 King's Indian, Fianchetto without c4 |
| 47. J Borisek vs H Olson |
| 1-0 | 33 | 2022 | Chennai Olympiad | C84 Ruy Lopez, Closed |
| 48. H Olson vs J Zhemba |
| 0-1 | 58 | 2022 | Chennai Olympiad | A47 Queen's Indian |
| 49. H Olson vs V Stoyanov |
| ½-½ | 70 | 2022 | Northumbria IM | D27 Queen's Gambit Accepted, Classical |
| 50. P Large vs H Olson |
| 0-1 | 74 | 2022 | Northumbria IM | A06 Reti Opening |
Kibitzing
