| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. M Kobalia vs S Halkias |
| ½-½ | 15 |
1998 |
World Junior Championships | D32 Queen's Gambit Declined, Tarrasch |
| 2. I Nikolaidis vs S Halkias |
| ½-½ | 9 |
1998 |
48th Greek Championships | A04 Reti Opening |
| 3. S Halkias vs I Papaioannou |
| ½-½ | 5 |
1998 |
48th Greek Championships | C48 Four Knights |
| 4. S Halkias vs Kasimdzhanov |
| ½-½ | 24 |
1999 |
Wch U20 | E92 King's Indian |
| 5. Skembris vs S Halkias |
| ½-½ | 12 |
2000 |
Greek Chess Championship | C03 French, Tarrasch |
| 6. T Petrik vs S Halkias |
| ½-½ | 62 |
2000 |
World Junior | B47 Sicilian, Taimanov (Bastrikov) Variation |
| 7. A Simutowe vs S Halkias |
| ½-½ | 50 |
2000 |
World Junior | D34 Queen's Gambit Declined, Tarrasch |
| 8. V Malakhov vs S Halkias |
| ½-½ | 45 |
2000 |
Wch U20 | D34 Queen's Gambit Declined, Tarrasch |
| 9. I Nikolaidis vs S Halkias |
| ½-½ | 13 |
2000 |
Greek Chess Championship | B20 Sicilian |
| 10. S Halkias vs Akobian |
| ½-½ | 109 |
2000 |
World Junior | D34 Queen's Gambit Declined, Tarrasch |
| 11. L Espig vs S Halkias |
| ½-½ | 74 |
2000 |
KB Czech Open | D34 Queen's Gambit Declined, Tarrasch |
| 12. S Halkias vs H Banikas |
| ½-½ | 7 |
2000 |
Greek Chess Championship | A04 Reti Opening |
| 13. S Halkias vs D Lima |
| ½-½ | 32 |
2000 |
34th Olympiad | A40 Queen's Pawn Game |
| 14. K Haznedaroglu vs S Halkias |
| ½-½ | 55 |
2000 |
World Junior | B33 Sicilian |
| 15. T M Haub vs S Halkias |
| ½-½ | 92 |
2000 |
KB Czech Open | A08 King's Indian Attack |
| 16. A Karagiannis vs S Halkias |
| ½-½ | 19 |
2000 |
Greek Chess Championship | C17 French, Winawer, Advance |
| 17. S Halkias vs Lputian |
| ½-½ | 37 |
2000 |
Yerevan zt 1.5 | D85 Grunfeld |
| 18. S Halkias vs Emms |
 | ½-½ | 17 |
2000 |
34th Olympiad | A61 Benoni |
| 19. S Halkias vs S Fedorchuk |
| ½-½ | 21 |
2000 |
World Junior | E11 Bogo-Indian Defense |
| 20. S Halkias vs I Aftsoglou |
| ½-½ | 30 |
2000 |
Greek Chess Championship | A46 Queen's Pawn Game |
| 21. A Butnorius vs S Halkias |
| ½-½ | 34 |
2000 |
34th Olympiad | A04 Reti Opening |
| 22. R Felgaer vs S Halkias |
| ½-½ | 35 |
2000 |
World Junior | B33 Sicilian |
| 23. S Halkias vs N Ristic |
| ½-½ | 38 |
2001 |
7th | D85 Grunfeld |
| 24. Krasenkow vs S Halkias |
| ½-½ | 16 |
2001 |
10th Open | D32 Queen's Gambit Declined, Tarrasch |
| 25. M O'Cinneide vs S Halkias |
| ½-½ | 48 |
2001 |
EuTCh | D34 Queen's Gambit Declined, Tarrasch |