| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. G Porreca vs G C Mondaini |
| 0-1 | 33 | 1952 | Italian Championship | D15 Queen's Gambit Declined Slav |
| 27. G Matteucci vs G Porreca |
| 0-1 | 28 | 1952 | Italian Championship | C58 Two Knights |
| 28. V Nestler vs G Porreca |
| 1-0 | 36 | 1952 | Italian Championship | C24 Bishop's Opening |
| 29. G Porreca vs L Del Vecchio |
 | 1-0 | 17 | 1952 | Italian Championship | E19 Queen's Indian, Old Main line, 9.Qxc3 |
| 30. E Szabados vs G Porreca |
| 0-1 | 44 | 1952 | Italian Championship | E03 Catalan, Open |
| 31. G Porreca vs V Ceccato |
| 1-0 | 32 | 1952 | Italian Championship | C03 French, Tarrasch |
| 32. E Paoli vs G Porreca |
| 0-1 | 34 | 1952 | Italian Championship | C58 Two Knights |
| 33. G Porreca vs V Castaldi |
| ½-½ | 24 | 1952 | Italian Championship | D78 Neo-Grunfeld, 6.O-O c6 |
| 34. F Scafarelli vs G Porreca |
| ½-½ | 40 | 1952 | Italian Championship | D52 Queen's Gambit Declined |
| 35. G Porreca vs Pilnik |
| 0-1 | 41 | 1952 | Belgrade | E94 King's Indian, Orthodox |
| 36. S Nedeljkovic vs G Porreca |
| 1-0 | 30 | 1952 | Belgrade | C05 French, Tarrasch |
| 37. G Porreca vs Janosevic |
| ½-½ | 48 | 1952 | Belgrade | E19 Queen's Indian, Old Main line, 9.Qxc3 |
| 38. G Porreca vs Golombek |
| ½-½ | 53 | 1952 | Belgrade | B18 Caro-Kann, Classical |
| 39. Pirc vs G Porreca |
| ½-½ | 33 | 1952 | Belgrade | D71 Neo-Grunfeld |
| 40. G Porreca vs C H Alexander |
| ½-½ | 42 | 1952 | Belgrade | C53 Giuoco Piano |
| 41. M Germek vs G Porreca |
| 1-0 | 28 | 1952 | Belgrade | D82 Grunfeld, 4.Bf4 |
| 42. G Porreca vs P Lob |
| 1-0 | 27 | 1952 | Belgrade | A94 Dutch, Stonewall with Ba3 |
| 43. Gruenfeld vs G Porreca |
| ½-½ | 26 | 1952 | Belgrade | D40 Queen's Gambit Declined, Semi-Tarrasch |
| 44. G Porreca vs N Karaklajic |
| ½-½ | 44 | 1952 | Belgrade | B01 Scandinavian |
| 45. D Andric vs G Porreca |
| ½-½ | 75 | 1952 | Belgrade | B06 Robatsch |
| 46. G Porreca vs O'Kelly |
| 0-1 | 38 | 1952 | Belgrade | B83 Sicilian |
| 47. A Matanovic vs G Porreca |
| 1-0 | 39 | 1952 | Belgrade | C41 Philidor Defense |
| 48. G Porreca vs M Udovcic |
 | 1-0 | 54 | 1952 | Belgrade | E80 King's Indian, Samisch Variation |
| 49. S Puc vs G Porreca |
| ½-½ | 55 | 1952 | Belgrade | D85 Grunfeld |
| 50. G Porreca vs G Stoltz |
| ½-½ | 24 | 1952 | Belgrade | B58 Sicilian |
Kibitzing
