| 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. J Gromek vs Z Doda |
| 1-0 | 24 | 1955 | Wroclaw | B90 Sicilian, Najdorf |
| 3. Sliwa vs J Gromek |
| 1-0 | 26 | 1955 | POL-ch | E81 King's Indian, Samisch |
| 4. Pachman vs J Gromek |
| 1-0 | 47 | 1956 | POL-CSR | E95 King's Indian, Orthodox, 7...Nbd7, 8.Re1 |
| 5. E Sojka vs J Gromek |
| ½-½ | 54 | 1956 | Krynica | B59 Sicilian, Boleslavsky Variation, 7.Nb3 |
| 6. S Dittmann vs J Gromek |
| 1-0 | 36 | 1956 | Krynica | E53 Nimzo-Indian, 4.e3 |
| 7. J Gromek vs Z Boleslawski |
 | 1-0 | 25 | 1956 | Krynica | D39 Queen's Gambit Declined, Ragozin, Vienna Variation |
| 8. A Tarnowski vs J Gromek |
| 0-1 | 48 | 1956 | Krynica | B88 Sicilian, Fischer-Sozin Attack |
| 9. D Keller vs J Gromek |
| 1-0 | 32 | 1956 | Moscow Olympiad qual-1 | B58 Sicilian |
| 10. J Gromek vs M Joffe |
| 1-0 | 35 | 1956 | Moscow Olympiad qual-1 | E85 King's Indian, Samisch, Orthodox Variation |
| 11. J Gromek vs Pedro J Borras |
| 1-0 | 30 | 1956 | Moscow Olympiad qual-1 | E46 Nimzo-Indian |
| 12. Taimanov vs J Gromek |
| 1-0 | 31 | 1956 | Moscow Olympiad qual-1 | D45 Queen's Gambit Declined Semi-Slav |
| 13. J Gromek vs W Folz |
| 1-0 | 32 | 1956 | Moscow Olympiad qual-1 | A34 English, Symmetrical |
| 14. J Gromek vs P Lindblom |
| 1-0 | 35 | 1956 | Moscow Olympiad qual-1 | E86 King's Indian, Samisch, Orthodox, 7.Nge2 c6 |
| 15. J Gromek vs Z Milev |
| 0-1 | 66 | 1956 | Moscow Olympiad qual-1 | D95 Grunfeld |
| 16. J Gromek vs S Burstein |
| 1-0 | 45 | 1956 | Moscow Olympiad Final-B | A10 English |
| 17. A Kinzel vs J Gromek |
| 1-0 | 37 | 1956 | Moscow Olympiad Final-B | B88 Sicilian, Fischer-Sozin Attack |
| 18. J Gromek vs G Restrepo |
| 1-0 | 22 | 1956 | Moscow Olympiad Final-B | E85 King's Indian, Samisch, Orthodox Variation |
| 19. J Gromek vs F Thorbergsson |
| 0-1 | 54 | 1956 | Moscow Olympiad Final-B | E80 King's Indian, Samisch Variation |
| 20. J Gromek vs W Ader Hausman |
| 1-0 | 48 | 1956 | Moscow Olympiad Final-B | E80 King's Indian, Samisch Variation |
| 21. H Bouwmeester vs J Gromek |
| 1-0 | 30 | 1956 | Moscow Olympiad Final-B | A05 Reti Opening |
| 22. J Gromek vs E Rojahn |
| 1-0 | 34 | 1956 | Moscow Olympiad Final-B | A20 English |
| 23. J Gromek vs C Orbaan |
| 0-1 | 80 | 1957 | Przepiorka Memorial | D41 Queen's Gambit Declined, Semi-Tarrasch |
| 24. F Winiwarter vs J Gromek |
| 1-0 | 39 | 1957 | Przepiorka Memorial | B30 Sicilian |
| 25. J Gromek vs E Nahlik |
| 1-0 | 39 | 1957 | Przepiorka Memorial | A13 English |
Kibitzing
