| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. A Ornstein vs E Torre |
| 0-1 | 44 |
1974 |
Olympiad | E98 King's Indian, Orthodox, Taimanov, 9.Ne1 |
| 2. A Ornstein vs W Schmidt |
| 1-0 | 43 |
1975 |
Rubinstein mem | E90 King's Indian |
| 3. A Ornstein vs Uhlmann |
| 0-1 | 37 |
1975 |
Polanica Zdroj 01 | E92 King's Indian |
| 4. A Ornstein vs Savon |
| 0-1 | 40 |
1976 |
Yerevan | E92 King's Indian |
| 5. A Ornstein vs Jansa |
| 0-1 | 32 |
1976 |
Decin | E67 King's Indian, Fianchetto |
| 6. A Ornstein vs W Schmidt |
| 1-0 | 39 |
1977 |
Budapest Tungsram | E61 King's Indian |
| 7. A Ornstein vs Jansa |
| 0-1 | 36 |
1978 |
Vrnjacka Banja | E60 King's Indian Defense |
| 8. A Ornstein vs Plachetka |
| ½-½ | 15 |
1978 |
Kirovakan | E66 King's Indian, Fianchetto, Yugoslav Panno |
| 9. A Ornstein vs W Schmidt |
| ½-½ | 50 |
1981 |
7. Gosa | E66 King's Indian, Fianchetto, Yugoslav Panno |
| 10. A Ornstein vs Ivkov |
| ½-½ | 16 |
1981 |
Smederevska Palanka | E62 King's Indian, Fianchetto |
| 11. A Ornstein vs Ermenkov |
 | 0-1 | 29 |
1981 |
7. Gosa | E66 King's Indian, Fianchetto, Yugoslav Panno |
| 12. A Ornstein vs V Johansson |
| 1-0 | 28 |
2003 |
32nd Rilton Cup | E67 King's Indian, Fianchetto |
