| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. R Cosulich vs M Vujovic |
| 1-0 | 20 |
1966 |
Rovigo | B97 Sicilian, Najdorf |
| 2. Matulovic vs R Cosulich |
| 1-0 | 28 |
1966 |
Imperia op | C12 French, McCutcheon |
| 3. R Cosulich vs A Magrin |
| 1-0 | 31 |
1966 |
Imperia | B77 Sicilian, Dragon, Yugoslav Attack |
| 4. R Cosulich vs G Porreca |
| 1-0 | 31 |
1967 |
S.Bened..del Tronto | B75 Sicilian, Dragon, Yugoslav Attack |
| 5. S Mariotti vs R Cosulich |
| ½-½ | 49 |
1967 |
S.Bened. del Tronto | B39 Sicilian, Accelerated Fianchetto, Breyer Variation |
| 6. R Cosulich vs A Rubinstein |
 | 1-0 | 35 |
1967 |
Recoaro tt | C84 Ruy Lopez, Closed |
| 7. V Eynard vs R Cosulich |
 | 0-1 | 21 |
1967 |
Recoaro | B32 Sicilian |
| 8. R Cosulich vs Parma |
| ½-½ | 41 |
1968 |
Imperia | B90 Sicilian, Najdorf |
| 9. Z Ljubisavljevic vs R Cosulich |
| 1-0 | 54 |
1968 |
Imperia | A16 English |
| 10. H Emden vs R Cosulich |
| 0-1 | 50 |
1968 |
Imperia | A48 King's Indian |
| 11. R Cosulich vs A Siveri |
| 1-0 | 38 |
1969 |
S.Benedetto del Tron | C86 Ruy Lopez, Worrall Attack |
| 12. R Cosulich vs M Bonfioli |
| 1-0 | 35 |
1969 |
Fanano | C78 Ruy Lopez |
| 13. R Cosulich vs A Capece |
| 1-0 | 46 |
1970 |
31 Camp. Ital. Sottomarina | A04 Reti Opening |
| 14. R Cosulich vs U Masera |
| 1-0 | 44 |
1970 |
Reggio Emilia | C64 Ruy Lopez, Classical |
| 15. R Cosulich vs Parma |
| ½-½ | 12 |
1970 |
Reggio Emilia | C94 Ruy Lopez, Closed, Breyer Defense |
| 16. A Zichichi vs R Cosulich |
| 0-1 | 58 |
1970 |
31 Camp. Ital. Sottomarina | B24 Sicilian, Closed |
| 17. R Cosulich vs Marachi |
| 1-0 | 37 |
1970 |
Siegen olm | C78 Ruy Lopez |
| 18. E Paoli vs R Cosulich |
| 1-0 | 34 |
1970 |
Bari | C12 French, McCutcheon |
| 19. R Cosulich vs Unzicker |
| 1-0 | 26 |
1970 |
Bari | C73 Ruy Lopez, Modern Steinitz Defense |
| 20. M Mihaljcisin vs R Cosulich |
| ½-½ | 14 |
1970 |
Reggio Emilia | B22 Sicilian, Alapin |
| 21. R Cosulich vs H Schumacher |
| 0-1 | 40 |
1970 |
Siegen ol fin-C | B10 Caro-Kann |
| 22. R Cosulich vs V Nestler |
| ½-½ | 24 |
1970 |
31 Camp. Ital. Sottomarina | B42 Sicilian, Kan |
| 23. Ribli vs R Cosulich |
| ½-½ | 32 |
1970 |
Siegen (ol) | B35 Sicilian, Accelerated Fianchetto, Modern Variation with Bc4 |
| 24. Ghitescu vs R Cosulich |
| ½-½ | 32 |
1970 |
Reggio Emilia | A22 English |
| 25. R T Cardoso vs R Cosulich |
 | 1-0 | 24 |
1970 |
Reggio Emilia | C01 French, Exchange |