| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. J Lechtynsky vs I Jankovec |
| 1-0 | 37 | 1967 | Czechoslovak Championship | B18 Caro-Kann, Classical |
| 27. I Jankovec vs I Ryc |
| 1-0 | 32 | 1967 | Czechoslovak Championship | A56 Benoni Defense |
| 28. P Machacek vs I Jankovec |
| 0-1 | 38 | 1967 | Czechoslovak Championship | D59 Queen's Gambit Declined, Tartakower |
| 29. I Jankovec vs J Kozma |
| 0-1 | 57 | 1967 | Czechoslovak Championship | E51 Nimzo-Indian, 4.e3 |
| 30. J Trapl vs I Jankovec |
| ½-½ | 37 | 1967 | Czechoslovak Championship | B18 Caro-Kann, Classical |
| 31. I Jankovec vs J Trmal |
| 0-1 | 38 | 1967 | Czechoslovak Championship | D37 Queen's Gambit Declined |
| 32. A Kubicek vs I Jankovec |
| 0-1 | 33 | 1967 | Czechoslovak Championship | A13 English |
| 33. I Jankovec vs V Stulik |
| 1-0 | 41 | 1967 | Czechoslovak Championship | E99 King's Indian, Orthodox, Taimanov |
| 34. D Pantaleev vs I Jankovec |
| 0-1 | 12 | 1968 | Havirov | E20 Nimzo-Indian |
| 35. I Jankovec vs H Baumgartner |
| ½-½ | 48 | 1968 | Havirov | A53 Old Indian |
| 36. E Nowak vs I Jankovec |
| ½-½ | 38 | 1968 | Havirov | B06 Robatsch |
| 37. I Jankovec vs C Radovici |
| ½-½ | 43 | 1968 | Havirov | A10 English |
| 38. J Sikora-Lerch vs I Jankovec |
| 1-0 | 44 | 1968 | Havirov | B96 Sicilian, Najdorf |
| 39. J Smetana vs I Jankovec |
| ½-½ | 25 | 1968 | Havirov | A07 King's Indian Attack |
| 40. I Jankovec vs F Blatny |
| 0-1 | 35 | 1968 | Havirov | A25 English |
| 41. H Sliwinski vs I Jankovec |
| 0-1 | 38 | 1968 | Havirov | A48 King's Indian |
| 42. I Jankovec vs Gulko |
| 0-1 | 56 | 1968 | Havirov | E87 King's Indian, Samisch, Orthodox |
| 43. I Jankovec vs V Sviridov |
| 1-0 | 34 | 1968 | Havirov | A93 Dutch, Stonewall, Botvinnik Variation |
| 44. S Kornasiewicz vs I Jankovec |
| ½-½ | 18 | 1968 | Havirov | B14 Caro-Kann, Panov-Botvinnik Attack |
| 45. L Lapis vs I Jankovec |
| 0-1 | 15 | 1968 | Havirov | C40 King's Knight Opening |
| 46. I Jankovec vs K Kupidlovsky |
| 1-0 | 23 | 1968 | Havirov | D37 Queen's Gambit Declined |
| 47. I Jankovec vs T Georgadze |
| 0-1 | 51 | 1968 | Havirov | A31 English, Symmetrical, Benoni Formation |
| 48. I Jankovec vs E Paoli |
| 1-0 | 31 | 1969 | Stary Smokovec | A05 Reti Opening |
| 49. Plachetka vs I Jankovec |
| 1-0 | 22 | 1969 | Stary Smokovec | A30 English, Symmetrical |
| 50. I Jankovec vs J Kozma |
| 0-1 | 51 | 1969 | Stary Smokovec | A04 Reti Opening |
Kibitzing
