| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. Sliwa vs J Gromek |
| 1-0 | 53 |
1954 |
POL-ch | E86 King's Indian, Samisch, Orthodox, 7.Nge2 c6 |
| 2. Sliwa vs J Gromek |
| 1-0 | 26 |
1955 |
POL-ch | E81 King's Indian, Samisch |
| 3. J Gromek vs Doda |
| 1-0 | 24 |
1955 |
Wroclaw | B90 Sicilian, Najdorf |
| 4. A Kinzel vs J Gromek |
| 1-0 | 37 |
1956 |
Moscow | B88 Sicilian, Fischer-Sozin Attack |
| 5. J Gromek vs Z Boleslawski |
 | 1-0 | 25 |
1956 |
Krynica | D39 Queen's Gambit Declined, Ragozin, Vienna Variation |
| 6. A Tarnowski vs J Gromek |
| 0-1 | 48 |
1956 |
Krynica | B88 Sicilian, Fischer-Sozin Attack |
| 7. E Sojka vs J Gromek |
| ½-½ | 54 |
1956 |
Krynica | B59 Sicilian, Boleslavsky Variation, 7.Nb3 |
| 8. W Dittmann vs J Gromek |
| 1-0 | 36 |
1956 |
Krynica | E53 Nimzo-Indian, 4.e3 |
| 9. J Gromek vs M Joffe |
| 1-0 | 35 |
1956 |
Moscow ol (Men) prel | E85 King's Indian, Samisch, Orthodox Variation |
| 10. Kholmov vs J Gromek |
| 1-0 | 30 |
1957 |
Przepiorka mem | A26 English |
| 11. J Gromek vs Sliwa |
 | 1-0 | 27 |
1957 |
Przepiorka mem | C73 Ruy Lopez, Modern Steinitz Defense |
| 12. J Gromek vs Sliwa |
| ½-½ | 33 |
1957 |
POL-ch 15th | D01 Richter-Veresov Attack |
| 13. Book vs J Gromek |
| 1-0 | 42 |
1959 |
Krakow | A07 King's Indian Attack |
| 14. Korchnoi vs J Gromek |
| ½-½ | 42 |
1959 |
Krakov | A56 Benoni Defense |
| 15. J Gromek vs Sliwa |
| 0-1 | 39 |
1959 |
Krakow | E28 Nimzo-Indian, Samisch Variation |
| 16. J Gromek vs F Blatny |
| 1-0 | 57 |
1959 |
Marianske Lazne | A25 English |
| 17. J Kozma vs J Gromek |
 | 1-0 | 29 |
1959 |
Marianske Lazne | E61 King's Indian |
| 18. Minev vs J Gromek |
 | 0-1 | 61 |
1959 |
Marianske Lazne | E97 King's Indian |
| 19. J Gromek vs J Kozma |
| ½-½ | 23 |
1959 |
Krakow | E54 Nimzo-Indian, 4.e3, Gligoric System |
| 20. J Gromek vs Ujtelky |
| 0-1 | 35 |
1959 |
Marianske Lazne | B47 Sicilian, Taimanov (Bastrikov) Variation |
| 21. Sliwa vs J Gromek |
| 1-0 | 55 |
1960 |
POL-ch | A67 Benoni, Taimanov Variation |
| 22. Sliwa vs J Gromek |
| 1-0 | 54 |
1962 |
POL-ch 19th | A34 English, Symmetrical |
| 23. K Makarczyk vs J Gromek |
| ½-½ | 83 |
1962 |
POL-ch extra | E91 King's Indian |
| 24. J Gromek vs Sliwa |
| 1-0 | 51 |
1962 |
POL-ch extra | A09 Reti Opening |
| 25. J Gromek vs W Schmidt |
| 1-0 | 42 |
1962 |
POL-ch 19th | E91 King's Indian |