| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. E Prandstetter vs A Lanc |
| ½-½ | 56 | 1974 | Czechoslovak Championship | B63 Sicilian, Richter-Rauzer Attack |
| 27. A Lanc vs J Augustin |
| 0-1 | 70 | 1974 | Czechoslovak Championship | C21 Center Game |
| 28. E Meduna vs A Lanc |
| 0-1 | 54 | 1974 | Czechoslovak Championship | A05 Reti Opening |
| 29. A Lanc vs Plachetka |
| ½-½ | 48 | 1974 | Czechoslovak Championship | C45 Scotch Game |
| 30. Jansa vs A Lanc |
| 1-0 | 41 | 1974 | Czechoslovak Championship | B31 Sicilian, Rossolimo Variation |
| 31. A Lanc vs L Mista |
| 1-0 | 42 | 1974 | Czechoslovak Championship | B46 Sicilian, Taimanov Variation |
| 32. Hort vs A Lanc |
| ½-½ | 42 | 1974 | Czechoslovak Championship | E75 King's Indian, Averbakh, Main line |
| 33. A Lanc vs S Kupka |
| 0-1 | 42 | 1974 | Czechoslovak Championship | B42 Sicilian, Kan |
| 34. M Bessenay vs A Lanc |
| 1-0 | 41 | 1974 | World Student Team Championship qual-4 | B63 Sicilian, Richter-Rauzer Attack |
| 35. S Fedder vs A Lanc |
| ½-½ | 24 | 1974 | World Student Team Championship qual-4 | A48 King's Indian |
| 36. A Lanc vs J Diaz |
| ½-½ | 61 | 1974 | World Student Team Championship qual-4 | B83 Sicilian |
| 37. M Carrion vs A Lanc |
| 0-1 | 40 | 1974 | World Student Team Championship qual-4 | B06 Robatsch |
| 38. A Lanc vs S Pedersen |
| ½-½ | 60 | 1974 | World Student Team Championship Final-A | B09 Pirc, Austrian Attack |
| 39. Sax vs A Lanc |
| 1-0 | 39 | 1974 | World Student Team Championship Final-A | A07 King's Indian Attack |
| 40. A Lanc vs Vaganian |
| 0-1 | 29 | 1974 | World Student Team Championship Final-A | B03 Alekhine's Defense |
| 41. A Lanc vs J Marcus |
| 1-0 | 49 | 1974 | World Student Team Championship Final-A | B12 Caro-Kann Defense |
| 42. C Kiffmeyer vs A Lanc |
| ½-½ | 55 | 1974 | World Student Team Championship Final-A | B63 Sicilian, Richter-Rauzer Attack |
| 43. A Lanc vs M Stean |
| 1-0 | 23 | 1974 | World Student Team Championship Final-A | B81 Sicilian, Scheveningen, Keres Attack |
| 44. H Scheichel vs A Lanc |
| 0-1 | 33 | 1974 | World Student Team Championship Final-A | E62 King's Indian, Fianchetto |
| 45. A Lanc vs S Matera |
| 0-1 | 73 | 1974 | World Student Team Championship Final-A | B58 Sicilian |
| 46. J Augustin vs A Lanc |
 | 1-0 | 18 | 1975 | Brno | A04 Reti Opening |
| 47. Barcza vs A Lanc |
| 1-0 | 46 | 1975 | Czechoslovak Championship (International) | D02 Queen's Pawn Game |
| 48. A Lanc vs Taimanov |
| ½-½ | 38 | 1975 | Czechoslovak Championship (International) | B46 Sicilian, Taimanov Variation |
| 49. J Augustin vs A Lanc |
| 1-0 | 18 | 1975 | Czechoslovak Championship (International) | A04 Reti Opening |
| 50. A Lanc vs W Schmidt |
| ½-½ | 41 | 1975 | Czechoslovak Championship (International) | B03 Alekhine's Defense |
Kibitzing
