| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. O Naegeli vs A Muffang |
  | 0-1 | 24 | 1928 | The Hague Olympiad | B03 Alekhine's Defense |
| 27. Kashdan vs O Naegeli |
| 1-0 | 41 | 1928 | The Hague Olympiad | B83 Sicilian |
| 28. A Pokorny vs O Naegeli |
| 1-0 | 35 | 1928 | The Hague Olympiad | D51 Queen's Gambit Declined |
| 29. O Naegeli vs W F Wertheim |
| 1-0 | 54 | 1928 | The Hague Olympiad | C98 Ruy Lopez, Closed, Chigorin |
| 30. O Naegeli vs L Cortez |
| 1-0 | 58 | 1928 | The Hague Olympiad | C43 Petrov, Modern Attack |
| 31. S Rosselli del Turco vs O Naegeli |
| 1-0 | 50 | 1929 | Venice | E22 Nimzo-Indian, Spielmann Variation |
| 32. G Patay vs O Naegeli |
| 1-0 | 32 | 1929 | Venice | E08 Catalan, Closed |
| 33. E Voellmy vs O Naegeli |
| 0-1 | 30 | 1930 | SUI-ch 34th | E23 Nimzo-Indian, Spielmann |
| 34. H Johner vs O Naegeli |
| 1-0 | 20 | 1930 | Le Pont | B83 Sicilian |
| 35. O Bernstein vs O Naegeli |
| 1-0 | 68 | 1930 | Le Pont | B23 Sicilian, Closed |
| 36. O Naegeli vs O Bernstein |
| ½-½ | 36 | 1930 | Le Pont | D51 Queen's Gambit Declined |
| 37. O Naegeli vs H Johner |
| 0-1 | 62 | 1930 | Le Pont | D63 Queen's Gambit Declined, Orthodox Defense |
| 38. O Naegeli vs A Nimzowitsch |
| ½-½ | 30 | 1931 | Training Match vs Naegeli | C13 French |
| 39. A Nimzowitsch vs O Naegeli |
| 0-1 | 36 | 1931 | Training Match vs Naegeli | A28 English |
| 40. A Nimzowitsch vs O Naegeli |
| 1-0 | 24 | 1931 | Swiss Championship | D35 Queen's Gambit Declined |
| 41. J van den Bosch vs O Naegeli |
| 0-1 | 68 | 1931 | Prague Olympiad | D51 Queen's Gambit Declined |
| 42. O Naegeli vs C Ahues |
| 0-1 | 38 | 1931 | Prague Olympiad | D45 Queen's Gambit Declined Semi-Slav |
| 43. E Andersen vs O Naegeli |
| 1-0 | 30 | 1931 | Prague Olympiad | D46 Queen's Gambit Declined Semi-Slav |
| 44. O Naegeli vs L Steiner |
| 0-1 | 29 | 1931 | Prague Olympiad | C84 Ruy Lopez, Closed |
| 45. Stahlberg vs O Naegeli |
| 1-0 | 31 | 1931 | Prague Olympiad | D37 Queen's Gambit Declined |
| 46. O Naegeli vs Kashdan |
| 0-1 | 26 | 1931 | Prague Olympiad | E23 Nimzo-Indian, Spielmann |
| 47. O Naegeli vs L Hanssen |
| 1-0 | 53 | 1931 | Prague Olympiad | E23 Nimzo-Indian, Spielmann |
| 48. Yates vs O Naegeli |
| 1-0 | 50 | 1931 | Prague Olympiad | B18 Caro-Kann, Classical |
| 49. O Bernstein vs O Naegeli |
| 1-0 | 42 | 1932 | Bern m | E16 Queen's Indian |
| 50. O Bernstein vs O Naegeli |
| 1-0 | 35 | 1932 | Bern m | D44 Queen's Gambit Declined Semi-Slav |
Kibitzing
