| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. Ivkov vs K Darga |
| ½-½ | 51 |
1953 |
Wch U20 final-A | E19 Queen's Indian, Old Main line, 9.Qxc3 |
| 2. Ivkov vs C B Van den Berg |
| 1-0 | 37 |
1961 |
Beverwijk | E19 Queen's Indian, Old Main line, 9.Qxc3 |
| 3. Ivkov vs K Darga |
| ½-½ | 57 |
1962 |
Sarajevo | E19 Queen's Indian, Old Main line, 9.Qxc3 |
| 4. Ivkov vs J Rejfir |
| 1-0 | 43 |
1962 |
Sarajevo | E19 Queen's Indian, Old Main line, 9.Qxc3 |
| 5. Ivkov vs Janosevic |
| 1-0 | 33 |
1962 |
Belgrade | E19 Queen's Indian, Old Main line, 9.Qxc3 |
| 6. Ivkov vs Parma |
| ½-½ | 43 |
1964 |
Belgrade | E19 Queen's Indian, Old Main line, 9.Qxc3 |
| 7. Ivkov vs Najdorf |
| ½-½ | 20 |
1965 |
Santa Monica (1) | E19 Queen's Indian, Old Main line, 9.Qxc3 |
| 8. Ivkov vs Najdorf |
| ½-½ | 20 |
1966 |
Santa Monica | E19 Queen's Indian, Old Main line, 9.Qxc3 |
| 9. Ivkov vs Petrosian |
| ½-½ | 30 |
1966 |
Santa Monica | E19 Queen's Indian, Old Main line, 9.Qxc3 |
| 10. Ivkov vs A Matanovic |
| ½-½ | 14 |
1967 |
Maribor | E19 Queen's Indian, Old Main line, 9.Qxc3 |
| 11. Ivkov vs A Matanovic |
| ½-½ | 18 |
1968 |
Palma de Mallorca | E19 Queen's Indian, Old Main line, 9.Qxc3 |
| 12. Ivkov vs Gheorghiu |
| ½-½ | 20 |
1968 |
Palma de Mallorca | E19 Queen's Indian, Old Main line, 9.Qxc3 |
| 13. Ivkov vs Korchnoi |
| 0-1 | 36 |
1968 |
Lugano | E19 Queen's Indian, Old Main line, 9.Qxc3 |
| 14. Ivkov vs Korchnoi |
 | 0-1 | 60 |
1968 |
Wijk aan Zee | E19 Queen's Indian, Old Main line, 9.Qxc3 |
| 15. Ivkov vs A Matanovic |
| ½-½ | 13 |
1969 |
Vrsac | E19 Queen's Indian, Old Main line, 9.Qxc3 |
| 16. Ivkov vs Kholmov |
| ½-½ | 49 |
1970 |
Budapest | E19 Queen's Indian, Old Main line, 9.Qxc3 |
| 17. Ivkov vs Gheorghiu |
| ½-½ | 18 |
1970 |
Budapest | E19 Queen's Indian, Old Main line, 9.Qxc3 |
| 18. Ivkov vs Polugaevsky |
| ½-½ | 16 |
1970 |
Palma de Mallorca | E19 Queen's Indian, Old Main line, 9.Qxc3 |
| 19. Ivkov vs Gheorghiu |
| ½-½ | 18 |
1970 |
Budapest | E19 Queen's Indian, Old Main line, 9.Qxc3 |
| 20. Ivkov vs I Bilek |
| ½-½ | 18 |
1970 |
Stockholm ,MCL 03 | E19 Queen's Indian, Old Main line, 9.Qxc3 |
| 21. Ivkov vs Portisch |
| ½-½ | 15 |
1971 |
Amsterdam IBM | E19 Queen's Indian, Old Main line, 9.Qxc3 |
| 22. Ivkov vs Najdorf |
| 1-0 | 58 |
1971 |
Wijk | E19 Queen's Indian, Old Main line, 9.Qxc3 |
| 23. Ivkov vs A Lombard |
| 1-0 | 41 |
1972 |
Skopje olm | E19 Queen's Indian, Old Main line, 9.Qxc3 |
| 24. Ivkov vs Dzindzichashvili |
| ½-½ | 41 |
1973 |
Tbilisi (Georgia) | E19 Queen's Indian, Old Main line, 9.Qxc3 |
| 25. Ivkov vs Karpov |
| ½-½ | 16 |
1976 |
Skopje | E19 Queen's Indian, Old Main line, 9.Qxc3 |