| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. K Eretova vs Plachetka |
| 0-1 | 41 |
1964 |
Harrachov 6465 | B16 Caro-Kann, Bronstein-Larsen Variation |
| 2. I Novak vs Plachetka |
| ½-½ | 41 |
1966 |
Harrachov U26 | B13 Caro-Kann, Exchange |
| 3. E Scholl vs Plachetka |
| 0-1 | 45 |
1966 |
Orebro Stud olm fA | B16 Caro-Kann, Bronstein-Larsen Variation |
| 4. Soltis vs Plachetka |
| 1-0 | 39 |
1968 |
WchT U26 15th qual-E | B11 Caro-Kann, Two Knights, 3...Bg4 |
| 5. J Augustin vs Plachetka |
| 0-1 | 43 |
1968 |
CSR-ch | B10 Caro-Kann |
| 6. D Drimer vs Plachetka |
| ½-½ | 56 |
1969 |
Luhacovice | B10 Caro-Kann |
| 7. J Banas vs Plachetka |
| ½-½ | 18 |
1970 |
CSR-ch Havirov | B14 Caro-Kann, Panov-Botvinnik Attack |
| 8. J Lechtynsky vs Plachetka |
| 1-0 | 39 |
1970 |
CSR-ch Havirov | B15 Caro-Kann |
| 9. K Honfi vs Plachetka |
| ½-½ | 39 |
1971 |
CSR-ch int | B16 Caro-Kann, Bronstein-Larsen Variation |
| 10. J Banas vs Plachetka |
| ½-½ | 15 |
1971 |
Novy Smokovec | B13 Caro-Kann, Exchange |
| 11. Jansa vs Plachetka |
| ½-½ | 52 |
1971 |
CSR-ch int | B14 Caro-Kann, Panov-Botvinnik Attack |
| 12. E Prandstetter vs Plachetka |
| 0-1 | 39 |
1976 |
CSR-ch | B11 Caro-Kann, Two Knights, 3...Bg4 |
| 13. M Pavlov vs Plachetka |
| ½-½ | 18 |
1980 |
Tirnavia-A | B15 Caro-Kann |
| 14. D Hansson vs Plachetka |
| ½-½ | 46 |
1980 |
Politiken Cup | B10 Caro-Kann |
| 15. Sax vs Plachetka |
| ½-½ | 11 |
1980 |
La Valetta ol (Men) | B12 Caro-Kann Defense |
| 16. Savon vs Plachetka |
| 1-0 | 49 |
1980 |
Esbjerg | B16 Caro-Kann, Bronstein-Larsen Variation |
| 17. G Franzoni vs Plachetka |
| 0-1 | 39 |
1980 |
La Valetta ol (Men) | B15 Caro-Kann |
| 18. Z Mestrovic vs Plachetka |
| 0-1 | 39 |
1981 |
Keszthely | B14 Caro-Kann, Panov-Botvinnik Attack |
| 19. Jiri Nun vs Plachetka |
| 0-1 | 24 |
1981 |
Tatran Cup | B13 Caro-Kann, Exchange |
| 20. M Pavlov vs Plachetka |
| ½-½ | 17 |
1981 |
Tirnava | B16 Caro-Kann, Bronstein-Larsen Variation |
| 21. L Dobrovolsky vs Plachetka |
| 1-0 | 27 |
1981 |
Tatran Cup | B16 Caro-Kann, Bronstein-Larsen Variation |
| 22. E Prandstetter vs Plachetka |
| ½-½ | 49 |
1981 |
Tirnava | B10 Caro-Kann |
| 23. J Ambroz vs Plachetka |
| ½-½ | 19 |
1981 |
Hradec Kralove | B12 Caro-Kann Defense |
| 24. G Horvath vs Plachetka |
| 0-1 | 62 |
1981 |
Keszthely | B16 Caro-Kann, Bronstein-Larsen Variation |
| 25. T Horvath vs Plachetka |
| ½-½ | 23 |
1981 |
Keszthely | B16 Caro-Kann, Bronstein-Larsen Variation |
