| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. J Hase vs Najdorf |
| ½-½ | 45 | 1972 | Zarate op | B93 Sicilian, Najdorf, 6.f4 |
| 27. J Hase vs J Rubinetti |
| 1-0 | 54 | 1973 | Pinamar tt | E11 Bogo-Indian Defense |
| 28. J Hase vs O Bazan |
| ½-½ | 50 | 1973 | Pinamar tt | B13 Caro-Kann, Exchange |
| 29. J Hase vs J S Morgado |
| 1-0 | 38 | 1973 | Argentine Championship | E00 Queen's Pawn Game |
| 30. M Leskovar vs J Hase |
| ½-½ | 27 | 1973 | Argentine Championship | B93 Sicilian, Najdorf, 6.f4 |
| 31. J Hase vs C Rebizzo |
| ½-½ | 42 | 1973 | Argentine Championship | B10 Caro-Kann |
| 32. F Casas vs J Hase |
| 1-0 | 48 | 1973 | Argentine Championship | A25 English |
| 33. J Hase vs M Jovanovich |
| 1-0 | 60 | 1973 | Argentine Championship | B14 Caro-Kann, Panov-Botvinnik Attack |
| 34. A Aparicio vs J Hase |
| 0-1 | 36 | 1973 | Argentine Championship | B96 Sicilian, Najdorf |
| 35. J Hase vs R Sanguineti |
| ½-½ | 18 | 1973 | Argentine Championship | B83 Sicilian |
| 36. R Hase vs J Hase |
| ½-½ | 14 | 1973 | Argentine Championship | C44 King's Pawn Game |
| 37. J Hase vs O Bazan |
| 1-0 | 49 | 1973 | Argentine Championship | C10 French |
| 38. R Garcia vs J Hase |
| ½-½ | 40 | 1973 | Argentine Championship | D13 Queen's Gambit Declined Slav, Exchange Variation |
| 39. J Hase vs L Bronstein |
| 1-0 | 40 | 1973 | Argentine Championship | B88 Sicilian, Fischer-Sozin Attack |
| 40. J Hase vs H Rossetto |
| ½-½ | 41 | 1973 | Argentine Championship | C10 French |
| 41. J Pelikan vs J Hase |
| ½-½ | 24 | 1973 | Argentine Championship | A22 English |
| 42. J Hase vs R Debarnot |
| 0-1 | 61 | 1973 | Argentine Championship | C11 French |
| 43. J Szmetan vs J Hase |
| ½-½ | 44 | 1973 | Argentine Championship | C66 Ruy Lopez |
| 44. H Perez Garcia vs J Hase |
| 1-0 | 41 | 1974 | Buenos Aires Ch. | A07 King's Indian Attack |
| 45. J Hase vs Haedo |
| 1-0 | 21 | 1975 | Buenos Aires op | C10 French |
| 46. J Hase vs L Bronstein |
| ½-½ | 58 | 1976 | Mar del Plata | B05 Alekhine's Defense, Modern |
| 47. J Hase vs J Rubinetti |
| 0-1 | 57 | 1976 | Mar del Plata | B40 Sicilian |
| 48. J Hase vs C Braga |
| ½-½ | 33 | 1978 | Tramandai Zonal | B27 Sicilian |
| 49. L Bronstein vs J Hase |
| ½-½ | 13 | 1978 | ARG-ch | B40 Sicilian |
| 50. J Hase vs J Szmetan |
| 1-0 | 37 | 1978 | ARG-ch | C17 French, Winawer, Advance |
Kibitzing
