| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. J Cucka vs J Zajic |
| 1-0 | 38 | 1960 | Czechoslovak Championship | B45 Sicilian, Taimanov |
| 27. J Kozma vs J Cucka |
| 1-0 | 20 | 1960 | Czechoslovak Championship | E63 King's Indian, Fianchetto, Panno Variation |
| 28. J Cucka vs Jansa |
 | 0-1 | 43 | 1960 | Czechoslovak Championship | B69 Sicilian, Richter-Rauzer Attack, 7...a6 Defense, 11.Bxf6 |
| 29. L Alster vs J Cucka |
| 1-0 | 35 | 1960 | Czechoslovak Championship | E61 King's Indian |
| 30. J Cucka vs J Vesely |
| ½-½ | 37 | 1960 | Czechoslovak Championship | B48 Sicilian, Taimanov Variation |
| 31. M Ujtelky vs J Cucka |
| 1-0 | 49 | 1960 | Czechoslovak Championship | A15 English |
| 32. J Cucka vs S Kupka |
| ½-½ | 41 | 1960 | Czechoslovak Championship | C80 Ruy Lopez, Open |
| 33. K Opocensky vs J Cucka |
| 1-0 | 44 | 1960 | Czechoslovak Championship | D47 Queen's Gambit Declined Semi-Slav |
| 34. F Blatny vs J Cucka |
| 1-0 | 20 | 1964 | Gargulak mem | B25 Sicilian, Closed |
| 35. Korchnoi vs J Cucka |
| ½-½ | 36 | 1966 | sim | A62 Benoni, Fianchetto Variation |
Kibitzing
