| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. Larsen vs B Brinck-Claussen |
 | 1-0 | 17 |
1964 |
DEN-ch | B21 Sicilian, 2.f4 and 2.d4 |
| 2. Larsen vs B Andersen |
 | 1-0 | 21 |
1964 |
DEN-ch | B21 Sicilian, 2.f4 and 2.d4 |
| 3. Larsen vs F J Perez Perez |
| 1-0 | 29 |
1964 |
Amsterdam Interzonal | B21 Sicilian, 2.f4 and 2.d4 |
| 4. Larsen vs Larry Evans |
| ½-½ | 41 |
1964 |
Amsterdam Interzonal | B21 Sicilian, 2.f4 and 2.d4 |
| 5. Larsen vs Tal |
| ½-½ | 31 |
1964 |
Amsterdam Interzonal | B21 Sicilian, 2.f4 and 2.d4 |
| 6. Larsen vs O Jakobsen |
| 1-0 | 26 |
1964 |
DEN-ch | B21 Sicilian, 2.f4 and 2.d4 |
| 7. Larsen vs O Jakobsen |
| 1-0 | 84 |
1965 |
Copenhagen | B21 Sicilian, 2.f4 and 2.d4 |
| 8. Larsen vs M Bobotsov |
| ½-½ | 14 |
1966 |
Le Havre | B21 Sicilian, 2.f4 and 2.d4 |
| 9. Larsen vs J B Bednarski |
 | 1-0 | 40 |
1967 |
Palma de Mallorca | B21 Sicilian, 2.f4 and 2.d4 |
| 10. Larsen vs G S DeFotis |
| 1-0 | 34 |
1968 |
USA op | B21 Sicilian, 2.f4 and 2.d4 |
| 11. Larsen vs Quinteros |
| ½-½ | 59 |
1973 |
Bauang it | B21 Sicilian, 2.f4 and 2.d4 |
| 12. Larsen vs Kavalek |
| 1-0 | 46 |
1974 |
Las Palmas | B21 Sicilian, 2.f4 and 2.d4 |
| 13. Larsen vs Ulf Andersson |
 | ½-½ | 44 |
1977 |
Geneva | B21 Sicilian, 2.f4 and 2.d4 |
| 14. Larsen vs F Olafsson |
 | 1-0 | 41 |
1995 |
Reykjavik Olafsson | B21 Sicilian, 2.f4 and 2.d4 |
| 15. Larsen vs J Szmetan |
| 1-0 | 29 |
1995 |
Mar del Plata op 26th | B21 Sicilian, 2.f4 and 2.d4 |
| 16. Larsen vs P Ricardi |
| ½-½ | 53 |
1995 |
San Martin | B21 Sicilian, 2.f4 and 2.d4 |
| 17. Larsen vs E Scarella |
| 1-0 | 29 |
1995 |
San Martin | B21 Sicilian, 2.f4 and 2.d4 |
| 18. Larsen vs C Hansen |
| 0-1 | 25 |
1995 |
Aars rapid 20' | B21 Sicilian, 2.f4 and 2.d4 |
| 19. Larsen vs P H Nielsen |
| ½-½ | 49 |
1995 |
Aars | B21 Sicilian, 2.f4 and 2.d4 |
| 20. Larsen vs Zhu Chen |
| 1-0 | 33 |
1998 |
Bad Homburg | B21 Sicilian, 2.f4 and 2.d4 |