| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 51. J Hase vs L Bronstein |
| ½-½ | 18 | 1978 | Tramandai Zonal | D85 Grunfeld |
| 52. J Hase vs H van Riemsdijk |
| 0-1 | 40 | 1978 | Tramandai Zonal | A07 King's Indian Attack |
| 53. C Silva Sanchez vs J Hase |
| ½-½ | 19 | 1978 | Tramandai Zonal | B80 Sicilian, Scheveningen |
| 54. J Hase vs W Estrada Degrandi |
| ½-½ | 52 | 1978 | Tramandai Zonal | C26 Vienna |
| 55. J Hase vs Sosonko |
| 0-1 | 36 | 1978 | Buenos Aires Olympiad | B74 Sicilian, Dragon, Classical |
| 56. H Olafsson vs J Hase |
| 0-1 | 30 | 1978 | Buenos Aires Olympiad | A21 English |
| 57. K Darga vs J Hase |
| ½-½ | 24 | 1978 | Buenos Aires Olympiad | A28 English |
| 58. C R Vasquez Horna vs J Hase |
| 0-1 | 24 | 1978 | Buenos Aires Olympiad | C91 Ruy Lopez, Closed |
| 59. J Hase vs A Matanovic |
| ½-½ | 31 | 1978 | Buenos Aires Olympiad | C95 Ruy Lopez, Closed, Breyer |
| 60. N Padevsky vs J Hase |
| ½-½ | 23 | 1978 | Buenos Aires Olympiad | D25 Queen's Gambit Accepted |
| 61. J Hase vs F Hoelzl |
| ½-½ | 50 | 1978 | Buenos Aires Olympiad | B30 Sicilian |
| 62. J Hase vs L Ogaard |
| ½-½ | 38 | 1978 | Buenos Aires Olympiad | B46 Sicilian, Taimanov Variation |
| 63. R Debarnot vs J Hase |
| 1-0 | 46 | 1980 | Argentine Championship | A14 English |
| 64. J Hase vs R Garcia |
| 0-1 | 28 | 1980 | Argentine Championship | B64 Sicilian, Richter-Rauzer Attack |
| 65. J Hase vs S Giardelli |
| ½-½ | 23 | 1980 | Argentine Championship | B42 Sicilian, Kan |
| 66. E Alvarez vs J Hase |
| 0-1 | 23 | 1980 | Argentine Championship | D91 Grunfeld, 5.Bg5 |
| 67. E Ramirez vs J Hase |
| ½-½ | 52 | 1980 | Argentine Championship | A22 English |
| 68. J Hase vs M Leskovar |
| ½-½ | 62 | 1980 | Argentine Championship | A42 Modern Defense, Averbakh System |
| 69. H Borghi vs J Hase |
| ½-½ | 11 | 1980 | Argentine Championship | C68 Ruy Lopez, Exchange |
| 70. J Hase vs A Roca |
| 1-0 | 42 | 1980 | Argentine Championship | E54 Nimzo-Indian, 4.e3, Gligoric System |
| 71. Quinteros vs J Hase |
| 1-0 | 38 | 1980 | Argentine Championship | A04 Reti Opening |
| 72. S Schweber vs J Hase |
| 0-1 | 64 | 1980 | Argentine Championship | A04 Reti Opening |
| 73. J Hase vs F Braga |
| ½-½ | 24 | 1980 | Argentine Championship | B21 Sicilian, 2.f4 and 2.d4 |
| 74. J Emma vs J Hase |
| ½-½ | 23 | 1980 | Argentine Championship | E45 Nimzo-Indian, 4.e3, Bronstein (Byrne) Variation |
| 75. J Hase vs L Bronstein |
| 1-0 | 34 | 1980 | Argentine Championship | B05 Alekhine's Defense, Modern |
Kibitzing
