| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. G Sigurjonsson vs N Kazilaris |
| 1-0 | 18 | 1969 | World Student Team Championship Final-B | B21 Sicilian, 2.f4 and 2.d4 |
| 2. G Sigurjonsson vs D Drimer |
| ½-½ | 24 | 1969 | Raach Zonal | B21 Sicilian, 2.f4 and 2.d4 |
| 3. G Sigurjonsson vs O Jakobsen |
| 1-0 | 58 | 1969 | Raach Zonal | B21 Sicilian, 2.f4 and 2.d4 |
| 4. G Sigurjonsson vs V Ciocaltea |
| 1-0 | 23 | 1970 | Caracas | B21 Sicilian, 2.f4 and 2.d4 |
| 5. G Sigurjonsson vs Stein |
| ½-½ | 16 | 1970 | Caracas | B21 Sicilian, 2.f4 and 2.d4 |
| 6. G Sigurjonsson vs O Sarapu |
| ½-½ | 107 | 1970 | Siegen Olympiad qual-6 | B21 Sicilian, 2.f4 and 2.d4 |
| 7. G Sigurjonsson vs Bobotsov |
| ½-½ | 15 | 1970 | Siegen Olympiad qual-6 | B21 Sicilian, 2.f4 and 2.d4 |
| 8. G Sigurjonsson vs H Camara |
| ½-½ | 59 | 1970 | Siegen Olympiad Final-C | B21 Sicilian, 2.f4 and 2.d4 |
| 9. G Sigurjonsson vs K Rogoff |
| ½-½ | 39 | 1972 | World Student Team Championship qual-2 | B21 Sicilian, 2.f4 and 2.d4 |
| 10. G Sigurjonsson vs J Rodriguez Cordoba |
| ½-½ | 24 | 1972 | Skopje Olympiad Final-B | B21 Sicilian, 2.f4 and 2.d4 |
| 11. G Sigurjonsson vs N Weinstein |
 | 1-0 | 36 | 1973 | Chicago USCF International | B21 Sicilian, 2.f4 and 2.d4 |
Kibitzing
