| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. E Grivas vs S Halkias |
| 1-0 | 28 |
1998 |
48th Greek Championships | D34 Queen's Gambit Declined, Tarrasch |
| 2. Aronian vs S Halkias |
| 1-0 | 26 |
1999 |
Wch U20 | D34 Queen's Gambit Declined, Tarrasch |
| 3. V Malakhov vs S Halkias |
| ½-½ | 45 |
2000 |
Wch U20 | D34 Queen's Gambit Declined, Tarrasch |
| 4. L Espig vs S Halkias |
| ½-½ | 74 |
2000 |
KB Czech Open | D34 Queen's Gambit Declined, Tarrasch |
| 5. A Simutowe vs S Halkias |
| ½-½ | 50 |
2000 |
World Junior | D34 Queen's Gambit Declined, Tarrasch |
| 6. H Banikas vs S Halkias |
| ½-½ | 13 |
2001 |
Battle of Crete Rapid | D34 Queen's Gambit Declined, Tarrasch |
| 7. Onischuk vs S Halkias |
| 0-1 | 40 |
2001 |
ECC | D34 Queen's Gambit Declined, Tarrasch |
| 8. T Markowski vs S Halkias |
| ½-½ | 41 |
2001 |
EuTCh | D34 Queen's Gambit Declined, Tarrasch |
| 9. Drasko vs S Halkias |
| ½-½ | 14 |
2001 |
7th | D34 Queen's Gambit Declined, Tarrasch |
| 10. G Timoshchenko vs S Halkias |
| ½-½ | 46 |
2001 |
2nd IECC | D34 Queen's Gambit Declined, Tarrasch |
| 11. E Grivas vs S Halkias |
| 0-1 | 66 |
2001 |
Battle of Crete Rapid | D34 Queen's Gambit Declined, Tarrasch |
| 12. Kiril Georgiev vs S Halkias |
| 1-0 | 37 |
2001 |
ECC | D34 Queen's Gambit Declined, Tarrasch |
| 13. M O'Cinneide vs S Halkias |
| ½-½ | 48 |
2001 |
EuTCh | D34 Queen's Gambit Declined, Tarrasch |
| 14. Skembris vs S Halkias |
| ½-½ | 22 |
2001 |
Antalya TUR | D34 Queen's Gambit Declined, Tarrasch |
| 15. Z Kozul vs S Halkias |
| ½-½ | 34 |
2001 |
2nd IECC | D34 Queen's Gambit Declined, Tarrasch |
| 16. L Zanellato vs S Halkias |
| 0-1 | 27 |
2001 |
10th Open | D34 Queen's Gambit Declined, Tarrasch |
| 17. Bacrot vs S Halkias |
| 1-0 | 55 |
2003 |
4th IECC | D34 Queen's Gambit Declined, Tarrasch |
| 18. Y Pelletier vs S Halkias |
| ½-½ | 17 |
2003 |
4th IECC | D34 Queen's Gambit Declined, Tarrasch |
| 19. S Siebrecht vs S Halkias |
| 1-0 | 35 |
2005 |
6th European Individual Championship | D34 Queen's Gambit Declined, Tarrasch |
| 20. M Tratar vs S Halkias |
| ½-½ | 80 |
2006 |
37th Chess Olympiad | D34 Queen's Gambit Declined, Tarrasch |
| 21. Dreev vs S Halkias |
| 1-0 | 27 |
2007 |
6th Aeroflot Festival | D34 Queen's Gambit Declined, Tarrasch |
| 22. D Fridman vs S Halkias |
| 1-0 | 52 |
2009 |
17th European Team Championship | D34 Queen's Gambit Declined, Tarrasch |