| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 26. H Liebert vs Bobotsov |
| 1-0 | 47 |
1965 |
Leipzig Inter 1st | B53 Sicilian |
| 27. H Liebert vs Sajtar |
| ½-½ | 42 |
1965 |
Leipzig Inter 1st | B89 Sicilian |
| 28. H Liebert vs Antoshin |
| ½-½ | 42 |
1965 |
Leipzig Inter 1st | B89 Sicilian |
| 29. H Liebert vs J Kozma |
| 1-0 | 42 |
1965 |
DSV-Turnier 02nd | B53 Sicilian |
| 30. Ujtelky vs H Liebert |
| ½-½ | 64 |
1966 |
Rubinstein mem 04th | A22 English |
| 31. Antoshin vs H Liebert |
| 1-0 | 34 |
1966 |
DSV-Turnier 03rd | E12 Queen's Indian |
| 32. H Liebert vs Smyslov |
| ½-½ | 29 |
1966 |
Polanica Zdroj | B05 Alekhine's Defense, Modern |
| 33. G Kluger vs H Liebert |
| 0-1 | 22 |
1966 |
Rubinstein mem 04th | E20 Nimzo-Indian |
| 34. H Liebert vs Uhlmann |
 | 0-1 | 35 |
1966 |
Zinnowitz | D01 Richter-Veresov Attack |
| 35. I Nei vs H Liebert |
| ½-½ | 19 |
1966 |
DSV-Turnier 03rd | E15 Queen's Indian |
| 36. H Liebert vs Sliwa |
| 0-1 | 41 |
1966 |
Rubinstein mem 04th | C72 Ruy Lopez, Modern Steinitz Defense, 5.O-O |
| 37. Antoshin vs H Liebert |
| ½-½ | 49 |
1967 |
Sochi | E12 Queen's Indian |
| 38. H Liebert vs Shamkovich |
| 0-1 | 61 |
1967 |
Memorial M.Chigorin | B41 Sicilian, Kan |
| 39. W Schmidt vs H Liebert |
| 1-0 | 51 |
1967 |
Rubinstein mem | B48 Sicilian, Taimanov Variation |
| 40. Spassky vs H Liebert |
| 1-0 | 23 |
1967 |
Sochi | E30 Nimzo-Indian, Leningrad |
| 41. H Liebert vs Uhlmann |
| ½-½ | 28 |
1967 |
Poland | C05 French, Tarrasch |
| 42. H Liebert vs Flohr |
| ½-½ | 13 |
1967 |
Polanica Zdroj (Poland) | A28 English |
| 43. A Zaitsev vs H Liebert |
| 1-0 | 33 |
1967 |
Memorial M.Chigorin | E54 Nimzo-Indian, 4.e3, Gligoric System |
| 44. H Liebert vs Kotov |
 | 0-1 | 21 |
1967 |
Sochi | B06 Robatsch |
| 45. H Liebert vs Sliwa |
| 1-0 | 24 |
1967 |
Rubinstein Mem | C72 Ruy Lopez, Modern Steinitz Defense, 5.O-O |
| 46. Hort vs H Liebert |
| 1-0 | 59 |
1967 |
Polanica Zdroj | A46 Queen's Pawn Game |
| 47. H Liebert vs Ujtelky |
| ½-½ | 38 |
1967 |
Sochi | A37 English, Symmetrical |
| 48. Suttles vs H Liebert |
| ½-½ | 51 |
1967 |
Polanica Zdroj (Poland) (7) | A07 King's Indian Attack |
| 49. Kotov vs H Liebert |
| ½-½ | 45 |
1967 |
Ch URS army 1/2 | B89 Sicilian |
| 50. H Liebert vs Simagin |
| ½-½ | 54 |
1967 |
Memorial M.Chigorin | B31 Sicilian, Rossolimo Variation |