| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. G Porreca vs A Siveri |
| 1-0 | 45 | 1950 | Italian Championship | D50 Queen's Gambit Declined |
| 2. G Primavera vs G Porreca |
| 1-0 | 46 | 1950 | Italian Championship | A90 Dutch |
| 3. G Porreca vs D Postpischl |
 | 1-0 | 43 | 1950 | Italian Championship | D22 Queen's Gambit Accepted |
| 4. V Ceccato vs G Porreca |
| ½-½ | 33 | 1950 | Italian Championship | C42 Petrov Defense |
| 5. G Porreca vs V Nestler |
| 1-0 | 33 | 1950 | Italian Championship | D85 Grunfeld |
| 6. G Porreca vs M Napolitano |
| 1-0 | 44 | 1950 | Italian Championship | E49 Nimzo-Indian, 4.e3, Botvinnik System |
| 7. E Paoli vs G Porreca |
| ½-½ | 48 | 1950 | Italian Championship | C47 Four Knights |
| 8. G Porreca vs P G Ricci |
| 1-0 | 46 | 1950 | Italian Championship | A40 Queen's Pawn Game |
| 9. A Giustolisi vs G Porreca |
| ½-½ | 46 | 1950 | Italian Championship | D32 Queen's Gambit Declined, Tarrasch |
| 10. G Porreca vs N Engalicev |
| 1-0 | 26 | 1950 | Italian Championship | D51 Queen's Gambit Declined |
| 11. V Castaldi vs G Porreca |
| ½-½ | 24 | 1950 | Italian Championship | A15 English |
| 12. C Staldi vs G Porreca |
| 0-1 | 76 | 1950 | Italian Championship | A47 Queen's Indian |
| 13. H Mueller vs G Porreca |
| 0-1 | 22 | 1950 | Dubrovnik Olympiad | A04 Reti Opening |
| 14. G Porreca vs T van Scheltinga |
 | ½-½ | 73 | 1950 | Dubrovnik Olympiad | D45 Queen's Gambit Declined Semi-Slav |
| 15. G Porreca vs R Flores Alvarez |
| 0-1 | 38 | 1950 | Dubrovnik Olympiad | D75 Neo-Grunfeld, 6.cd Nxd5, 7.O-O c5, 8.dxc5 |
| 16. G Porreca vs C Guimard |
| 0-1 | 32 | 1950 | Dubrovnik Olympiad | A95 Dutch, Stonewall |
| 17. E Pedersen vs G Porreca |
| ½-½ | 24 | 1950 | Dubrovnik Olympiad | C84 Ruy Lopez, Closed |
| 18. A Dunkelblum vs G Porreca |
| 0-1 | 35 | 1950 | Dubrovnik Olympiad | A13 English |
| 19. G Porreca vs K Ojanen |
| ½-½ | 40 | 1950 | Dubrovnik Olympiad | E19 Queen's Indian, Old Main line, 9.Qxc3 |
| 20. G Porreca vs L Rellstab |
| 0-1 | 38 | 1950 | Dubrovnik Olympiad | D46 Queen's Gambit Declined Semi-Slav |
| 21. O Morcken vs G Porreca |
| 0-1 | 34 | 1950 | Dubrovnik Olympiad | E37 Nimzo-Indian, Classical |
| 22. Pirc vs G Porreca |
| 1-0 | 27 | 1950 | Dubrovnik Olympiad | A04 Reti Opening |
| 23. P Panagopoulos vs G Porreca |
| 0-1 | 40 | 1950 | Dubrovnik Olympiad | E43 Nimzo-Indian, Fischer Variation |
| 24. G Porreca vs M Zapata Vinces |
| 1-0 | 35 | 1950 | Dubrovnik Olympiad | E06 Catalan, Closed, 5.Nf3 |
| 25. G Porreca vs F Norcia |
| ½-½ | 82 | 1952 | Italian Championship | D56 Queen's Gambit Declined |
Kibitzing
