| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. I Zaitsev vs Krogius |
| ½-½ | 28 |
1962 |
30th USSR Championship | B97 Sicilian, Najdorf |
| 2. I Zaitsev vs Aronin |
| ½-½ | 24 |
1962 |
30th USSR Championship | B32 Sicilian |
| 3. I Zaitsev vs Stein |
 | 0-1 | 35 |
1962 |
Ch URS | B47 Sicilian, Taimanov (Bastrikov) Variation |
| 4. I Zaitsev vs Spassky |
| 0-1 | 24 |
1962 |
URS-ch | B23 Sicilian, Closed |
| 5. I Zaitsev vs Mnatsakanian |
| ½-½ | 30 |
1962 |
30th USSR Championship | B29 Sicilian, Nimzovich-Rubinstein |
| 6. I Zaitsev vs Kholmov |
| 0-1 | 29 |
1962 |
URS-ch30 | B46 Sicilian, Taimanov Variation |
| 7. I Zaitsev vs Vasiukov |
| ½-½ | 59 |
1964 |
Moscow-ch | B60 Sicilian, Richter-Rauzer |
| 8. I Zaitsev vs E Ubilava |
| 0-1 | 33 |
1967 |
Kharkov ch35-SU | B21 Sicilian, 2.f4 and 2.d4 |
| 9. I Zaitsev vs I Belov |
| 1-0 | 67 |
1967 |
URS-ch35 | B50 Sicilian |
| 10. I Zaitsev vs Suetin |
 | 1-0 | 21 |
1968 |
Moscow | B89 Sicilian |
| 11. I Zaitsev vs Savon |
 | 1-0 | 29 |
1969 |
URS-ch sf | B87 Sicilian, Fischer-Sozin with ...a6 and ...b5 |
| 12. I Zaitsev vs Platonov |
| 0-1 | 68 |
1969 |
USSR | B47 Sicilian, Taimanov (Bastrikov) Variation |
| 13. I Zaitsev vs V Liberzon |
| ½-½ | 106 |
1969 |
37th Soviet Championship | B47 Sicilian, Taimanov (Bastrikov) Variation |
| 14. I Zaitsev vs O Dementiev |
 | 1-0 | 20 |
1970 |
USSR Championship | B90 Sicilian, Najdorf |
| 15. I Zaitsev vs V Tukmakov |
| 0-1 | 41 |
1970 |
USSR Championship | B57 Sicilian |
| 16. I Zaitsev vs O Moiseev |
| 1-0 | 41 |
1970 |
USSR Championship | B47 Sicilian, Taimanov (Bastrikov) Variation |
| 17. I Zaitsev vs Vasiukov |
 | 0-1 | 55 |
1971 |
Moscow 5' | B47 Sicilian, Taimanov (Bastrikov) Variation |
| 18. I Zaitsev vs V Tukmakov |
| 0-1 | 35 |
1972 |
URS-ch sf | B89 Sicilian |
| 19. I Zaitsev vs Jansa |
| ½-½ | 43 |
1976 |
Sochi | B46 Sicilian, Taimanov Variation |
| 20. I Zaitsev vs H Watzka |
| 0-1 | 43 |
1979 |
Graz | B32 Sicilian |
| 21. I Zaitsev vs Vogt |
| ½-½ | 18 |
1980 |
Baku it, AZE | B40 Sicilian |
| 22. I Zaitsev vs Beliavsky |
| ½-½ | 17 |
1980 |
Baku it, AZE | B63 Sicilian, Richter-Rauzer Attack |
| 23. I Zaitsev vs Csom |
| 0-1 | 74 |
1980 |
Baku it, AZE | B66 Sicilian, Richter-Rauzer Attack, 7...a6 |
| 24. I Zaitsev vs N Padevsky |
| ½-½ | 30 |
1980 |
Baku it, AZE | B81 Sicilian, Scheveningen, Keres Attack |
| 25. I Zaitsev vs Mikhalchishin |
| ½-½ | 21 |
1980 |
Baku | B72 Sicilian, Dragon |