| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. A Lanc vs Taimanov |
| 0-1 | 31 |
1979 |
Bucharest | B46 Sicilian, Taimanov Variation |
| 2. A Lanc vs Ivan Waldmann |
| 1-0 | 27 |
1980 |
Zamardi | B93 Sicilian, Najdorf, 6.f4 |
| 3. A Lanc vs Marton Krajcsovits |
| 1-0 | 34 |
1981 |
Elekes mem-B | B42 Sicilian, Kan |
| 4. A Lanc vs R Bernard |
| 1-0 | 37 |
1982 |
Rostock | B93 Sicilian, Najdorf, 6.f4 |
| 5. A Lanc vs Plachetka |
| ½-½ | 21 |
1984 |
Tirnavia | B80 Sicilian, Scheveningen |
| 6. A Lanc vs K Mokry |
| 0-1 | 32 |
1984 |
Tirnavia | B90 Sicilian, Najdorf |
| 7. A Lanc vs Tseshkovsky |
| 1-0 | 31 |
1984 |
Rostock 10th | B93 Sicilian, Najdorf, 6.f4 |
| 8. A Lanc vs T Paehtz Sr |
| ½-½ | 37 |
1985 |
Tbilisi | B93 Sicilian, Najdorf, 6.f4 |
| 9. A Lanc vs W Newerow |
| 0-1 | 57 |
1985 |
Poznan | B93 Sicilian, Najdorf, 6.f4 |
| 10. A Lanc vs I Novikov |
| 0-1 | 31 |
1985 |
Poznan | B93 Sicilian, Najdorf, 6.f4 |
| 11. A Lanc vs A Machulsky |
| 0-1 | 33 |
1986 |
Stary Smokovec | B93 Sicilian, Najdorf, 6.f4 |
| 12. A Lanc vs Plachetka |
| 1-0 | 61 |
1986 |
Tirnavia | B85 Sicilian, Scheveningen, Classical |
| 13. A Lanc vs A W Potts |
| ½-½ | 37 |
1987 |
Tbilisi,GEO | B93 Sicilian, Najdorf, 6.f4 |
| 14. A Lanc vs Jansa |
| 1-0 | 42 |
1987 |
Trnava | B46 Sicilian, Taimanov Variation |
| 15. A Lanc vs K Kristensen |
| 1-0 | 31 |
1987 |
Copenhagen | B93 Sicilian, Najdorf, 6.f4 |
| 16. A Lanc vs Robatsch |
| 1-0 | 47 |
1988 |
06 | B57 Sicilian |
| 17. A Lanc vs Savon |
| 0-1 | 39 |
1989 |
Tirnavia-B | B87 Sicilian, Fischer-Sozin with ...a6 and ...b5 |
| 18. A Lanc vs Chekhov |
| 1-0 | 36 |
1989 |
Bohemians | B40 Sicilian |
| 19. A Lanc vs S Petrik |
| 1-0 | 30 |
1999 |
SVK-chT 9900 | B32 Sicilian |
| 20. A Lanc vs Z Rigo |
| 1-0 | 33 |
2000 |
SVK-chT 9900 | B43 Sicilian, Kan, 5.Nc3 |
| 21. A Lanc vs H Tiemann |
| ½-½ | 42 |
2001 |
ICCF Email - corr | B87 Sicilian, Fischer-Sozin with ...a6 and ...b5 |
| 22. A Lanc vs M Bednarska |
| 1-0 | 50 |
2001 |
Tatry Open | B71 Sicilian, Dragon, Levenfish Variation |
| 23. A Lanc vs P Hertel |
| 0-1 | 52 |
2001 |
ICCF Email - corr | B86 Sicilian, Fischer-Sozin Attack |
| 24. A Lanc vs Z Rigo |
| ½-½ | 64 |
2001 |
Tatry Open | B47 Sicilian, Taimanov (Bastrikov) Variation |
| 25. A Lanc vs A Gozman |
| ½-½ | 24 |
2001 |
ICCF Email - corr | B86 Sicilian, Fischer-Sozin Attack |