| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. Tal vs Plachetka |
 | ½-½ | 64 |
1960 |
Prague radio sim | C44 King's Pawn Game |
| 2. J Kozma vs Plachetka |
 | 1-0 | 21 |
1962 |
CSR-ch | D34 Queen's Gambit Declined, Tarrasch |
| 3. Jansa vs Plachetka |
| 1-0 | 42 |
1962 |
CSR-ch | C98 Ruy Lopez, Closed, Chigorin |
| 4. Plachetka vs L Alster |
| 0-1 | 34 |
1962 |
CSR-ch | B27 Sicilian |
| 5. Plachetka vs Kavalek |
| ½-½ | 50 |
1962 |
CSR-ch | B90 Sicilian, Najdorf |
| 6. Plachetka vs Hort |
| 0-1 | 24 |
1962 |
CSR-ch | B90 Sicilian, Najdorf |
| 7. Plachetka vs J Nun |
| ½-½ | 55 |
1962 |
CSR-ch | D41 Queen's Gambit Declined, Semi-Tarrasch |
| 8. F Blatny vs Plachetka |
| 1-0 | 42 |
1962 |
CSR-ch | B26 Sicilian, Closed, 6.Be3 |
| 9. J Vesely vs Plachetka |
| ½-½ | 18 |
1962 |
CSR-ch | B50 Sicilian |
| 10. Hybl vs Plachetka |
| 0-1 | 26 |
1962 |
CSR-ch | D34 Queen's Gambit Declined, Tarrasch |
| 11. J Augustin vs Plachetka |
| 0-1 | 41 |
1962 |
CSR-ch | B40 Sicilian |
| 12. J Trapl vs Plachetka |
| 1-0 | 48 |
1962 |
CSR-ch | B89 Sicilian |
| 13. Plachetka vs J Fichtl |
| 1-0 | 42 |
1962 |
CSR-ch | C15 French, Winawer |
| 14. Plachetka vs Jan Fabian |
| 1-0 | 67 |
1962 |
CSR-ch | A56 Benoni Defense |
| 15. Plachetka vs Opocensky |
| ½-½ | 36 |
1962 |
CSR-ch | B18 Caro-Kann, Classical |
| 16. Plachetka vs J Trmal |
| ½-½ | 30 |
1962 |
CSR-ch | D24 Queen's Gambit Accepted |
| 17. S Kupka vs Plachetka |
| ½-½ | 24 |
1962 |
CSR-ch | A04 Reti Opening |
| 18. J Marsalek vs Plachetka |
| ½-½ | 16 |
1962 |
CSR-ch | B31 Sicilian, Rossolimo Variation |
| 19. Paul O'Brien vs Plachetka |
| 0-1 | 24 |
1963 |
Prague-London U26 | B35 Sicilian, Accelerated Fianchetto, Modern Variation with Bc4 |
| 20. Plachetka vs J Bellin |
 | 1-0 | 20 |
1964 |
Harrachov 6465 | B13 Caro-Kann, Exchange |
| 21. Kavalek vs Plachetka |
| 1-0 | 34 |
1964 |
Harrachov 6465 | C93 Ruy Lopez, Closed, Smyslov Defense |
| 22. Smejkal vs Plachetka |
| 1-0 | 40 |
1964 |
Harrachov 6465 | E62 King's Indian, Fianchetto |
| 23. Plachetka vs Jansa |
| 0-1 | 26 |
1964 |
Harrachov 6465 | B44 Sicilian |
| 24. Plachetka vs J Augustin |
| 1-0 | 21 |
1964 |
Harrachov 6465 | A14 English |
| 25. K Eretova vs Plachetka |
| 0-1 | 41 |
1964 |
Harrachov 6465 | B16 Caro-Kann, Bronstein-Larsen Variation |