| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. J Sikora-Lerch vs Kupreichik |
 | 1-0 | 25 | 1966 | 2nd Christmas Tournament | B05 Alekhine's Defense, Modern |
| 2. Karpov vs J Sikora-Lerch |
| 1-0 | 42 | 1966 | 2nd Christmas Tournament | B24 Sicilian, Closed |
| 3. J Sikora-Lerch vs J Trapl |
| ½-½ | 38 | 1968 | Czechoslovak Championship | B06 Robatsch |
| 4. F Vykydal vs J Sikora-Lerch |
| 0-1 | 37 | 1968 | Czechoslovak Championship | B23 Sicilian, Closed |
| 5. J Sikora-Lerch vs Smejkal |
| 1-0 | 26 | 1968 | Czechoslovak Championship | D41 Queen's Gambit Declined, Semi-Tarrasch |
| 6. F Blatny vs J Sikora-Lerch |
| 1-0 | 52 | 1968 | Czechoslovak Championship | C78 Ruy Lopez |
| 7. J Sikora-Lerch vs Pachman |
| 0-1 | 34 | 1968 | Czechoslovak Championship | E26 Nimzo-Indian, Samisch |
| 8. J Dolezal vs J Sikora-Lerch |
| ½-½ | 32 | 1968 | Czechoslovak Championship | E14 Queen's Indian |
| 9. J Sikora-Lerch vs J Lechtynsky |
| ½-½ | 36 | 1968 | Czechoslovak Championship | C15 French, Winawer |
| 10. S Kupka vs J Sikora-Lerch |
| 1-0 | 22 | 1968 | Czechoslovak Championship | B32 Sicilian |
| 11. J Sikora-Lerch vs M Janata |
| 0-1 | 63 | 1968 | Czechoslovak Championship | C18 French, Winawer |
| 12. Hort vs J Sikora-Lerch |
| 1-0 | 33 | 1968 | Czechoslovak Championship | E87 King's Indian, Samisch, Orthodox |
| 13. J Sikora-Lerch vs J Augustin |
| ½-½ | 15 | 1968 | Czechoslovak Championship | E11 Bogo-Indian Defense |
| 14. Kavalek vs J Sikora-Lerch |
| 1-0 | 43 | 1968 | Czechoslovak Championship | E70 King's Indian |
| 15. J Sikora-Lerch vs Jansa |
| 0-1 | 41 | 1968 | Czechoslovak Championship | B56 Sicilian |
| 16. J Fabian vs J Sikora-Lerch |
| 1-0 | 34 | 1968 | Czechoslovak Championship | D02 Queen's Pawn Game |
| 17. J Sikora-Lerch vs J Kozma |
| 1-0 | 47 | 1968 | Czechoslovak Championship | D87 Grunfeld, Exchange |
| 18. Filip vs J Sikora-Lerch |
| 1-0 | 32 | 1968 | Czechoslovak Championship | E66 King's Indian, Fianchetto, Yugoslav Panno |
| 19. J Sikora-Lerch vs Z Hlousek |
| ½-½ | 15 | 1968 | Czechoslovak Championship | B43 Sicilian, Kan, 5.Nc3 |
| 20. J Sikora-Lerch vs Plachetka |
| 0-1 | 48 | 1968 | Czechoslovak Championship | B06 Robatsch |
| 21. A Kubicek vs J Sikora-Lerch |
| 0-1 | 47 | 1968 | Czechoslovak Championship | A25 English |
| 22. J Sikora-Lerch vs I Jankovec |
| 1-0 | 44 | 1968 | Havirov | B96 Sicilian, Najdorf |
| 23. E Nowak vs J Sikora-Lerch |
| ½-½ | 19 | 1968 | Havirov | B06 Robatsch |
| 24. J Sikora-Lerch vs Gulko |
| 0-1 | 36 | 1968 | Havirov | C16 French, Winawer |
| 25. J Sikora-Lerch vs F Blatny |
| ½-½ | 21 | 1968 | Havirov | C75 Ruy Lopez, Modern Steinitz Defense |
Kibitzing
