| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 26. J Lechtynsky vs A Lanc |
| 1-0 | 17 |
1980 |
Hornicky Kahanec | A48 King's Indian |
| 27. A Lanc vs Ivan Waldmann |
| 1-0 | 27 |
1980 |
Zamardi | B93 Sicilian, Najdorf, 6.f4 |
| 28. A Lanc vs Marton Krajcsovits |
| 1-0 | 34 |
1981 |
Elekes mem-B | B42 Sicilian, Kan |
| 29. K Mokry vs A Lanc |
| 0-1 | 23 |
1981 |
Elekes mem-B | B33 Sicilian |
| 30. A Lanc vs R Bernard |
| 1-0 | 37 |
1982 |
Rostock | B93 Sicilian, Najdorf, 6.f4 |
| 31. G Kluger vs A Lanc |
| ½-½ | 15 |
1983 |
Elekes mem-B | A55 Old Indian, Main line |
| 32. Chekhov vs A Lanc |
| 1-0 | 89 |
1984 |
Rostock 10th | A56 Benoni Defense |
| 33. I Stohl vs A Lanc |
 | 1-0 | 25 |
1984 |
Trnava | E66 King's Indian, Fianchetto, Yugoslav Panno |
| 34. A Lanc vs Tseshkovsky |
| 1-0 | 31 |
1984 |
Rostock 10th | B93 Sicilian, Najdorf, 6.f4 |
| 35. A Lanc vs K Mokry |
| 0-1 | 32 |
1984 |
Tirnavia | B90 Sicilian, Najdorf |
| 36. A Lanc vs Blatny |
| 0-1 | 61 |
1984 |
Poznan | C77 Ruy Lopez |
| 37. A Lanc vs Plachetka |
| ½-½ | 21 |
1984 |
Tirnavia | B80 Sicilian, Scheveningen |
| 38. Ftacnik vs A Lanc |
| 1-0 | 41 |
1984 |
Trnava | E98 King's Indian, Orthodox, Taimanov, 9.Ne1 |
| 39. W Schmidt vs A Lanc |
| 1-0 | 72 |
1984 |
Tirnavia | E74 King's Indian, Averbakh, 6...c5 |
| 40. A Lanc vs W Newerow |
| 0-1 | 57 |
1985 |
Poznan | B93 Sicilian, Najdorf, 6.f4 |
| 41. A Lanc vs K Mokry |
| ½-½ | 31 |
1985 |
Tirnavia | C16 French, Winawer |
| 42. A Lanc vs I Novikov |
| 0-1 | 31 |
1985 |
Poznan | B93 Sicilian, Najdorf, 6.f4 |
| 43. A Lanc vs Glek |
| 1-0 | 54 |
1985 |
Cedok | C13 French |
| 44. A Lanc vs W Schmidt |
| ½-½ | 36 |
1985 |
Tirnavia | C18 French, Winawer |
| 45. A Lanc vs T Paehtz Sr |
| ½-½ | 37 |
1985 |
Tbilisi | B93 Sicilian, Najdorf, 6.f4 |
| 46. Jiri Nun vs A Lanc |
| ½-½ | 81 |
1985 |
Trnava (Czech Republic) | C55 Two Knights Defense |
| 47. I Stohl vs A Lanc |
 | ½-½ | 61 |
1986 |
Stary Smokovec | D43 Queen's Gambit Declined Semi-Slav |
| 48. K Mokry vs A Lanc |
| 0-1 | 40 |
1986 |
Tirnavia | B70 Sicilian, Dragon Variation |
| 49. A Lanc vs Plachetka |
| 1-0 | 61 |
1986 |
Tirnavia | B85 Sicilian, Scheveningen, Classical |
| 50. A Lanc vs Tseshkovsky |
| 1-0 | 58 |
1986 |
Tirnavia | C61 Ruy Lopez, Bird's Defense |