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| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. D Bertholdt vs Portisch |
| 0-1 | 56 |
1957 |
WchT U26 04th | E55 Nimzo-Indian, 4.e3, Gligoric System, Bronstein Variation |
| 2. Tolush vs Portisch |
| 0-1 | 67 |
1958 |
Balatonfured | E55 Nimzo-Indian, 4.e3, Gligoric System, Bronstein Variation |
| 3. J H Donner vs Portisch |
| 0-1 | 29 |
1960 |
Leipzig | E55 Nimzo-Indian, 4.e3, Gligoric System, Bronstein Variation |
|