| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. R Cosulich vs M Vujovic |
| 1-0 | 20 |
1966 |
Rovigo | B97 Sicilian, Najdorf |
| 2. R Cosulich vs A Magrin |
| 1-0 | 31 |
1966 |
Imperia | B77 Sicilian, Dragon, Yugoslav Attack |
| 3. Matulovic vs R Cosulich |
| 1-0 | 28 |
1966 |
Imperia op | C12 French, McCutcheon |
| 4. R Cosulich vs A Rubinstein |
 | 1-0 | 35 |
1967 |
Recoaro tt | C84 Ruy Lopez, Closed |
| 5. R Cosulich vs G Porreca |
| 1-0 | 31 |
1967 |
S.Bened..del Tronto | B75 Sicilian, Dragon, Yugoslav Attack |
| 6. Z Ljubisavljevic vs R Cosulich |
| 1-0 | 54 |
1968 |
Imperia | A16 English |
| 7. R Cosulich vs A Siveri |
| 1-0 | 38 |
1969 |
S.Benedetto del Tron | C86 Ruy Lopez, Worrall Attack |
| 8. R Cosulich vs M Bonfioli |
| 1-0 | 35 |
1969 |
Fanano | C78 Ruy Lopez |
| 9. E Paoli vs R Cosulich |
| 1-0 | 34 |
1970 |
Bari | C12 French, McCutcheon |
| 10. F Norcia vs R Cosulich |
| 1-0 | 47 |
1970 |
31 Camp. Ital. Sottomarina | A22 English |
| 11. R Cosulich vs U Masera |
| 1-0 | 44 |
1970 |
Reggio Emilia | C64 Ruy Lopez, Classical |
| 12. R Cosulich vs J Pinto Paiva |
| 1-0 | 36 |
1970 |
Siegen olm | C85 Ruy Lopez, Exchange Variation Doubly Deferred (DERLD) |
| 13. R Cosulich vs A Capece |
| 1-0 | 46 |
1970 |
31 Camp. Ital. Sottomarina | A04 Reti Opening |
| 14. R T Cardoso vs R Cosulich |
| 1-0 | 24 |
1970 |
Reggio Emilia | C01 French, Exchange |
| 15. A Puhm vs R Cosulich |
| 1-0 | 45 |
1970 |
La Spezia | B32 Sicilian |
| 16. R Cosulich vs Marachi |
| 1-0 | 37 |
1970 |
Siegen olm | C78 Ruy Lopez |
| 17. R Primavera vs R Cosulich |
| 1-0 | 27 |
1970 |
31 Camp. Ital. Sottomarina | B98 Sicilian, Najdorf |
| 18. M Damjanovic vs R Cosulich |
| 1-0 | 38 |
1970 |
Reggio Emilia | B39 Sicilian, Accelerated Fianchetto, Breyer Variation |
| 19. R Cosulich vs Unzicker |
| 1-0 | 26 |
1970 |
Bari | C73 Ruy Lopez, Modern Steinitz Defense |
| 20. R Cosulich vs A Galeb |
| 1-0 | 40 |
1970 |
Siegen olm | B43 Sicilian, Kan, 5.Nc3 |
| 21. R Cosulich vs I Giubbolini |
| 1-0 | 25 |
1970 |
31 Camp. Ital. Sottomarina | B87 Sicilian, Fischer-Sozin with ...a6 and ...b5 |
| 22. R Cosulich vs H Maschian |
| 1-0 | 28 |
1970 |
Reggio Emilia | B44 Sicilian |
| 23. R Cosulich vs S Nikolic |
| 1-0 | 59 |
1970 |
Bari | B89 Sicilian |
| 24. R Cosulich vs E Ungueranu |
| 1-0 | 43 |
1970 |
Siegen ol | B89 Sicilian |
| 25. R Cosulich vs B Manzardo |
| 1-0 | 28 |
1970 |
31 Camp. Ital. Sottomarina | B35 Sicilian, Accelerated Fianchetto, Modern Variation with Bc4 |
