| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. S Ionov vs Smirin |
| ½-½ | 32 |
1988 |
URS-ch FL56 | E94 King's Indian, Orthodox |
| 2. S Ionov vs Smirin |
| ½-½ | 36 |
1990 |
Moscow op | E60 King's Indian Defense |
| 3. S Ionov vs Bologan |
 | 0-1 | 95 |
1991 |
URS-ch58 | E70 King's Indian |
| 4. S Ionov vs Akopian |
| ½-½ | 32 |
1991 |
URS-ch58 | E67 King's Indian, Fianchetto |
| 5. S Ionov vs Khalifman |
| 0-1 | 47 |
1995 |
St. Petersburg (Russia) | E76 King's Indian, Four Pawns Attack |
| 6. S Ionov vs Khalifman |
| ½-½ | 29 |
1996 |
Ch St. Petersburg | E97 King's Indian |
| 7. S Ionov vs Dolmatov |
| ½-½ | 45 |
2001 |
54th ch-RUS | E97 King's Indian |
| 8. S Ionov vs P Blehm |
| ½-½ | 33 |
2001 |
2nd IECC | E92 King's Indian |
| 9. S Ionov vs Nijboer |
| ½-½ | 56 |
2001 |
2nd IECC | E62 King's Indian, Fianchetto |
| 10. S Ionov vs Y Stepak |
| 1-0 | 47 |
2003 |
European Clubs Cup (Men) | E91 King's Indian |
| 11. S Ionov vs A Kuzmin |
| ½-½ | 57 |
2004 |
57th Russian Championship Qualifier | E94 King's Indian, Orthodox |
| 12. S Ionov vs S Solovjov |
| 1-0 | 76 |
2004 |
57th Russian Championship Qualifier | E68 King's Indian, Fianchetto, Classical Variation, 8.e4 |
| 13. S Ionov vs Sasikiran |
| ½-½ | 62 |
2006 |
Cappelle la Grande | E60 King's Indian Defense |
| 14. S Ionov vs A Gubajdullin |
| 1-0 | 41 |
2006 |
59th Russian Championship | E63 King's Indian, Fianchetto, Panno Variation |
| 15. S Ionov vs Jobava |
| 0-1 | 28 |
2008 |
Aeroflot Open | E67 King's Indian, Fianchetto |
| 16. S Ionov vs Vl Kovalev |
| ½-½ | 36 |
2009 |
Chigorin Memorial Open | E69 King's Indian, Fianchetto, Classical Main line |
