| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. J Kozma vs Jansa |
| 0-1 | 41 |
1960 |
CSR-ch | E60 King's Indian Defense |
| 2. J Vesely vs Jansa |
 | 0-1 | 31 |
1960 |
CSR-ch | E93 King's Indian, Petrosian System |
| 3. J Rejfir vs Jansa |
| ½-½ | 33 |
1960 |
CSR-ch | E92 King's Indian |
| 4. Krogius vs Jansa |
 | 1-0 | 36 |
1961 |
Moscow | E60 King's Indian Defense |
| 5. J Rejfir vs Jansa |
| ½-½ | 24 |
1961 |
CSR-ch | E97 King's Indian |
| 6. Sliwa vs Jansa |
| 1-0 | 47 |
1962 |
Marianske Lazne | E83 King's Indian, Samisch |
| 7. J Kozma vs Jansa |
| 1-0 | 42 |
1962 |
CSR-ch | E60 King's Indian Defense |
| 8. Y Stepak vs Jansa |
| 0-1 | 40 |
1964 |
Tel Aviv | E83 King's Indian, Samisch |
| 9. Spassky vs Jansa |
| 1-0 | 44 |
1964 |
Tel Aviv | E83 King's Indian, Samisch |
| 10. V Philip vs Jansa |
| 0-1 | 40 |
1964 |
Tel Aviv | E92 King's Indian |
| 11. W Golz vs Jansa |
| ½-½ | 60 |
1964 |
GER | E99 King's Indian, Orthodox, Taimanov |
| 12. J Kozma vs Jansa |
| 0-1 | 39 |
1964 |
CSR-ch | E60 King's Indian Defense |
| 13. M Damjanovic vs Jansa |
| 0-1 | 22 |
1965 |
Tiblisi | E69 King's Indian, Fianchetto, Classical Main line |
| 14. Filip vs Jansa |
| 1-0 | 37 |
1966 |
CSR-ch Int 1st | E68 King's Indian, Fianchetto, Classical Variation, 8.e4 |
| 15. K Lagha vs Jansa |
| 0-1 | 48 |
1968 |
Lugano | E80 King's Indian, Samisch Variation |
| 16. P Norby vs Jansa |
| 0-1 | 38 |
1968 |
Lugano | E64 King's Indian, Fianchetto, Yugoslav System |
| 17. J Flesch vs Jansa |
| 0-1 | 33 |
1969 |
Zalaegerszeg | E97 King's Indian |
| 18. S Kupka vs Jansa |
| 0-1 | 46 |
1969 |
Luhacovice | E62 King's Indian, Fianchetto |
| 19. E Cobo Arteaga vs Jansa |
| ½-½ | 30 |
1970 |
Siegen olm | E97 King's Indian |
| 20. Ivkov vs Jansa |
| 1-0 | 38 |
1970 |
Budapest | E92 King's Indian |
| 21. Polugaevsky vs Jansa |
| 1-0 | 32 |
1970 |
Siegen 10/800 | E73 King's Indian |
| 22. N Padevsky vs Jansa |
| 1-0 | 43 |
1970 |
Kapfenberg ETC | E77 King's Indian |
| 23. Portisch vs Jansa |
| 1-0 | 45 |
1970 |
Budapest | E81 King's Indian, Samisch |
| 24. Plachetka vs Jansa |
| 0-1 | 55 |
1970 |
Havirov CZE ch | E75 King's Indian, Averbakh, Main line |
| 25. A Gouder vs Jansa |
| 0-1 | 26 |
1970 |
Siegen olm | E92 King's Indian |