| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. H Lambert vs G Sigurdsson |
| 0-1 | 29 | 1952 | Helsinki Olympiad Final-C | B08 Pirc, Classical |
| 27. F Mastichiadis vs H Lambert |
 | 1-0 | 27 | 1952 | Helsinki Olympiad Final-C | D45 Queen's Gambit Declined Semi-Slav |
| 28. H Lambert vs E Rojahn |
| 0-1 | 37 | 1952 | Helsinki Olympiad Final-C | B32 Sicilian |
| 29. F Jost vs H Lambert |
| 1-0 | 34 | 1952 | Helsinki Olympiad Final-C | D45 Queen's Gambit Declined Semi-Slav |
| 30. J Mangini vs H Lambert |
| 1-0 | 37 | 1952 | Helsinki Olympiad Final-C | C66 Ruy Lopez |
| 31. H Lambert vs P Mueller-Breil |
| ½-½ | 49 | 1952 | Helsinki Olympiad Final-C | C75 Ruy Lopez, Modern Steinitz Defense |
| 32. H Lambert vs V Nestler |
| ½-½ | 36 | 1952 | Austria - Italy | E80 King's Indian, Samisch Variation |
| 33. E Van Hoorde vs H Lambert |
| 0-1 | 36 | 1953 | Clare Benedict Cup | C01 French, Exchange |
| 34. H Lambert vs E Paoli |
| ½-½ | 50 | 1953 | Clare Benedict Cup | B95 Sicilian, Najdorf, 6...e6 |
| 35. J H Donner vs H Lambert |
| 0-1 | 31 | 1953 | Clare Benedict Cup | C87 Ruy Lopez |
| 36. H Lambert vs H Grob |
| 1-0 | 47 | 1953 | Clare Benedict Cup | D37 Queen's Gambit Declined |
| 37. A Muffang vs H Lambert |
| 1-0 | 30 | 1953 | Clare Benedict Cup | E64 King's Indian, Fianchetto, Yugoslav System |
| 38. Flohr vs H Lambert |
| 1-0 | 31 | 1953 | Austria - Soviet Union | E00 Queen's Pawn Game |
| 39. H Lambert vs Flohr |
| ½-½ | 21 | 1953 | Austria - Soviet Union | A00 Uncommon Opening |
| 40. H Lambert vs G Bruckner |
| 1-0 | 41 | 1953 | Mitropa Cup | E87 King's Indian, Samisch, Orthodox |
| 41. J Kupper vs H Lambert |
| ½-½ | 82 | 1953 | Mitropa Cup | C85 Ruy Lopez, Exchange Variation Doubly Deferred (DERLD) |
| 42. G Maier vs H Lambert |
| ½-½ | 41 | 1953 | Mitropa Cup | B06 Robatsch |
| 43. B Milic vs H Lambert |
| ½-½ | 28 | 1953 | Mitropa Cup | C75 Ruy Lopez, Modern Steinitz Defense |
| 44. H Lambert vs K Van Schoor |
| ½-½ | 56 | 1953 | Mitropa Cup | B07 Pirc |
| 45. H Lambert vs M Albareda Creus |
| 1-0 | 27 | 1965 | Clare Benedict Cup | C13 French |
| 46. C Zuidema vs H Lambert |
| ½-½ | 41 | 1965 | Clare Benedict Cup | C70 Ruy Lopez |
| 47. L Schmid vs H Lambert |
| 1-0 | 41 | 1965 | Clare Benedict Cup | E94 King's Indian, Orthodox |
| 48. H Lambert vs M J Franklin |
| 0-1 | 53 | 1965 | Clare Benedict Cup | B47 Sicilian, Taimanov (Bastrikov) Variation |
| 49. H Lambert vs M Markus |
| ½-½ | 34 | 1965 | Clare Benedict Cup | C96 Ruy Lopez, Closed |
| 50. Jansa vs H Lambert |
| 1-0 | 35 | 1967 | EU-chT preliminary | E73 King's Indian |
Kibitzing
