| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. I Radulov vs G Kuzmin |
| 0-1 | 35 |
1966 |
Orebro Stud olm fA | B44 Sicilian |
| 2. I Radulov vs P Mertens |
| 1-0 | 22 |
1966 |
Orebro Stud olm prelim5 | B45 Sicilian, Taimanov |
| 3. I Radulov vs Gipslis |
| 0-1 | 32 |
1966 |
Tbilisi (Georgia) | B48 Sicilian, Taimanov Variation |
| 4. I Radulov vs Bobotsov |
| 0-1 | 40 |
1967 |
BUL-ch | B89 Sicilian |
| 5. I Radulov vs Bobotsov |
| 1-0 | 39 |
1968 |
Varna | B56 Sicilian |
| 6. I Radulov vs Huebner |
| ½-½ | 44 |
1968 |
Lugano ol (Men) | B42 Sicilian, Kan |
| 7. I Radulov vs Suetin |
| 0-1 | 39 |
1969 |
La Habana 8/353 | B48 Sicilian, Taimanov Variation |
| 8. I Radulov vs Taimanov |
| 0-1 | 20 |
1970 |
? | B48 Sicilian, Taimanov Variation |
| 9. I Radulov vs Suetin |
| ½-½ | 26 |
1970 |
Budapest | B48 Sicilian, Taimanov Variation |
| 10. I Radulov vs Ivkov |
| ½-½ | 21 |
1970 |
Budapest | B86 Sicilian, Fischer-Sozin Attack |
| 11. I Radulov vs Ulf Andersson |
 | 1-0 | 38 |
1970 |
Siegen olm prel | B90 Sicilian, Najdorf |
| 12. I Radulov vs Ribli |
| 0-1 | 35 |
1972 |
Kecskemet | B86 Sicilian, Fischer-Sozin Attack |
| 13. I Radulov vs Ulf Andersson |
 | ½-½ | 50 |
1972 |
Hastings (England) | B48 Sicilian, Taimanov Variation |
| 14. I Radulov vs Robatsch |
| 1-0 | 47 |
1972 |
Helsinki | B61 Sicilian, Richter-Rauzer, Larsen Variation, 7.Qd2 |
| 15. I Radulov vs O Jakobsen |
| 1-0 | 52 |
1972 |
Helsinki | B87 Sicilian, Fischer-Sozin with ...a6 and ...b5 |
| 16. I Radulov vs G Estevez-Morales |
| 1-0 | 41 |
1973 |
Leningrad izt | B73 Sicilian, Dragon, Classical |
| 17. I Radulov vs Ljubojevic |
| ½-½ | 19 |
1973 |
Poiana Brasov | B51 Sicilian, Canal-Sokolsky (Rossolimo) Attack |
| 18. I Radulov vs Smejkal |
| ½-½ | 25 |
1973 |
IBM | B52 Sicilian, Canal-Sokolsky (Rossolimo) Attack |
| 19. I Radulov vs Smejkal |
| 0-1 | 56 |
1973 |
Leningrad izt | B52 Sicilian, Canal-Sokolsky (Rossolimo) Attack |
| 20. I Radulov vs M Cuellar-Gacharna |
| 1-0 | 27 |
1973 |
Leningrad izt | B52 Sicilian, Canal-Sokolsky (Rossolimo) Attack |
| 21. I Radulov vs Tringov |
| 1-0 | 37 |
1973 |
BUL-chT | B81 Sicilian, Scheveningen, Keres Attack |
| 22. I Radulov vs Quinteros |
| 1-0 | 48 |
1973 |
Izt (cat.12) | B43 Sicilian, Kan, 5.Nc3 |
| 23. I Radulov vs V Tukmakov |
| ½-½ | 40 |
1973 |
Leningrad izt | B81 Sicilian, Scheveningen, Keres Attack |
| 24. I Radulov vs Smejkal |
| ½-½ | 15 |
1973 |
Vidmar mem | B52 Sicilian, Canal-Sokolsky (Rossolimo) Attack |
| 25. I Radulov vs Sosonko |
| ½-½ | 22 |
1974 |
Wijk aan Zee | B64 Sicilian, Richter-Rauzer Attack |