| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. J W te Kolste vs H van Hartingsvelt |
 | 1-0 | 36 | 1921 | Dutch Championship | C14 French, Classical |
| 27. H van Hartingsvelt vs R Loman |
| 0-1 | 51 | 1921 | Dutch Championship | C44 King's Pawn Game |
| 28. R Meijer vs H van Hartingsvelt |
| 0-1 | 34 | 1921 | Dutch Championship | D02 Queen's Pawn Game |
| 29. H van Hartingsvelt vs Olland |
| 0-1 | 39 | 1921 | Dutch Championship | C42 Petrov Defense |
| 30. Euwe vs H van Hartingsvelt |
| 1-0 | 35 | 1921 | Dutch Championship | D07 Queen's Gambit Declined, Chigorin Defense |
| 31. J Davidson vs H van Hartingsvelt |
| 1-0 | 73 | 1921 | Dutch Championship | D02 Queen's Pawn Game |
| 32. Alekhine vs H van Hartingsvelt |
| 0-1 | 34 | 1921 | Simul, 30b | A46 Queen's Pawn Game |
| 33. Euwe vs H van Hartingsvelt |
| 1-0 | 54 | 1922 | Amsterdam | C13 French |
| 34. H van Hartingsvelt vs Euwe |
| ½-½ | 67 | 1923 | Euwe-van Hartingsvelt Match | E90 King's Indian |
| 35. H van Hartingsvelt vs Euwe |
| 0-1 | 37 | 1923 | Euwe-van Hartingsvelt Match | B83 Sicilian |
| 36. H van Hartingsvelt vs Euwe |
| 0-1 | 28 | 1923 | Euwe-van Hartingsvelt Match | C26 Vienna |
| 37. Euwe vs H van Hartingsvelt |
| 1-0 | 65 | 1923 | Euwe-van Hartingsvelt Match | A04 Reti Opening |
| 38. Euwe vs H van Hartingsvelt |
| 1-0 | 48 | 1923 | Euwe-van Hartingsvelt Match | D46 Queen's Gambit Declined Semi-Slav |
| 39. H van Hartingsvelt vs G Oskam |
| 1-0 | 18 | 1924 | NED Team-ch 192324 | B03 Alekhine's Defense |
| 40. J Meyer vs H van Hartingsvelt |
| 0-1 | 36 | 1924 | VAS | D02 Queen's Pawn Game |
| 41. H van Hartingsvelt vs G Key |
| ½-½ | 40 | 1924 | ASC-NRSV | C44 King's Pawn Game |
| 42. Euwe vs H van Hartingsvelt |
| 1-0 | 27 | 1925 | NED-ch | C13 French |
| 43. A van Foreest vs H van Hartingsvelt |
| ½-½ | 38 | 1925 | NED-ch Team | B32 Sicilian |
| 44. H van Hartingsvelt vs R Loman |
| 0-1 | 30 | 1925 | ASC - DD | C24 Bishop's Opening |
| 45. H van Hartingsvelt vs Euwe |
| 0-1 | 38 | 1926 | Watersnood | E73 King's Indian |
| 46. H van Hartingsvelt vs Euwe |
| 0-1 | 54 | 1927 | Amsterdam | A16 English |
| 47. E Schramm vs H van Hartingsvelt |
| ½-½ | 41 | 1927 | NSB-RhW Schachverband | D02 Queen's Pawn Game |
| 48. H Weenink vs H van Hartingsvelt |
| 0-1 | 42 | 1927 | VAS-ASC | A28 English |
| 49. H van Hartingsvelt vs M Barzin |
| 0-1 | 38 | 1927 | Netherlands - Belgium | C46 Three Knights |
| 50. H van Hartingsvelt vs G Key |
| 1-0 | 32 | 1928 | NRSV-ASC | D35 Queen's Gambit Declined |
Kibitzing
