| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. Sosonko vs A Pavlov |
 | 1-0 | 39 | 1957 | Leningrad | B63 Sicilian, Richter-Rauzer Attack |
| 2. V Liberzon vs Sosonko |
| 1-0 | 44 | 1964 | URS | B74 Sicilian, Dragon, Classical |
| 3. A Roshal vs Sosonko |
| 0-1 | 40 | 1964 | URS | A07 King's Indian Attack |
| 4. Sosonko vs Antoshin |
| 0-1 | 33 | 1964 | URS | A27 English, Three Knights System |
| 5. O Chernikov vs Sosonko |
| ½-½ | 43 | 1964 | Leningrad | B32 Sicilian |
| 6. Sosonko vs V Osnos |
| 0-1 | 32 | 1964 | URS | E15 Queen's Indian |
| 7. Sosonko vs V Osnos |
| 0-1 | 32 | 1964 | Leningrad Championship | E15 Queen's Indian |
| 8. Furman vs Sosonko |
| 0-1 | 31 | 1964 | Leningrad Championship | E60 King's Indian Defense |
| 9. A Ketslakh vs Sosonko |
| 1-0 | 47 | 1964 | Leningrad Championship | D92 Grunfeld, 5.Bf4 |
| 10. Sosonko vs Y Smolsky |
| 0-1 | 28 | 1965 | Leningrad | D99 Grunfeld Defense, Smyslov |
| 11. Sosonko vs T Lomaia |
| ½-½ | 34 | 1965 | Burevestnik Championship sf-2 | E40 Nimzo-Indian, 4.e3 |
| 12. Sosonko vs E Bukhman |
| ½-½ | 34 | 1965 | Burevestnik Championship Final | D21 Queen's Gambit Accepted |
| 13. I Veinger vs Sosonko |
| 0-1 | 24 | 1966 | Leningrad Championship | B01 Scandinavian |
| 14. Sosonko vs Yakshevic |
| 1-0 | 27 | 1966 | Leningrad | D16 Queen's Gambit Declined Slav |
| 15. Sosonko vs B Khropov |
| 1-0 | 30 | 1966 | Leningrad | D24 Queen's Gambit Accepted |
| 16. I Kudinov vs Sosonko |
| ½-½ | 27 | 1966 | Leningrad | B32 Sicilian |
| 17. V Zelevinsky vs Sosonko |
| 1-0 | 35 | 1967 | Masters-Candidate Masters | A07 King's Indian Attack |
| 18. Sosonko vs L Novikov |
| 1-0 | 33 | 1967 | Leningrad | D43 Queen's Gambit Declined Semi-Slav |
| 19. Sosonko vs Ivanov |
| 1-0 | 40 | 1967 | Leningrad | E54 Nimzo-Indian, 4.e3, Gligoric System |
| 20. Alburt vs Sosonko |
| ½-½ | 45 | 1967 | USSR Championship | B30 Sicilian |
| 21. Sosonko vs Y Gusev |
| 1-0 | 34 | 1967 | USSR Championship | D15 Queen's Gambit Declined Slav |
| 22. Sosonko vs Tseitlin |
| ½-½ | 34 | 1970 | Leningrad Championship | D97 Grunfeld, Russian |
| 23. S Sazontiev vs Sosonko |
| 1-0 | 42 | 1970 | Leningrad Championship | D42 Queen's Gambit Declined, Semi-Tarrasch, 7.Bd3 |
| 24. V Karasev vs Sosonko |
| 1-0 | 34 | 1970 | Leningrad Championship | A04 Reti Opening |
| 25. Sosonko vs I Radashkovich |
| 1-0 | 41 | 1970 | Leningrad Championship | D37 Queen's Gambit Declined |
Kibitzing
