| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. G Quillan vs Sherzer |
| 0-1 | 41 |
1990 |
Prestwich (England) | B51 Sicilian, Canal-Sokolsky (Rossolimo) Attack |
| 2. G Quillan vs A Galliamova-Ivanchuk |
| ½-½ | 64 |
1990 |
Prestwich | B30 Sicilian |
| 3. G Quillan vs J Shaw |
| ½-½ | 17 |
2005 |
Gibraltar Masters | B31 Sicilian, Rossolimo Variation |
| 4. G Quillan vs V Cmilyte |
| ½-½ | 71 |
2005 |
Gibraltar Masters | B31 Sicilian, Rossolimo Variation |
| 5. G Quillan vs S Williams |
| 1-0 | 53 |
2005 |
Gibraltar Masters | B51 Sicilian, Canal-Sokolsky (Rossolimo) Attack |
| 6. G Quillan vs M White |
| ½-½ | 42 |
2006 |
European Union Individual Championships | B30 Sicilian |
| 7. G Quillan vs Conquest |
| ½-½ | 45 |
2006 |
European Union Individual Championships | B30 Sicilian |
| 8. G Quillan vs A Dunn |
| 1-0 | 79 |
2006 |
Gibtelecom Chess Festival | B23 Sicilian, Closed |
| 9. G Quillan vs P Cramling |
 | 0-1 | 17 |
2006 |
Gibtelecom Chess Festival | B40 Sicilian |
| 10. G Quillan vs P Cafolla |
| 1-0 | 34 |
2006 |
15th Monarch Assurance | B30 Sicilian |
| 11. G Quillan vs N Dzagnidze |
| 0-1 | 32 |
2007 |
5th Gibraltar Chess Festival | B51 Sicilian, Canal-Sokolsky (Rossolimo) Attack |
| 12. G Quillan vs G Jones |
| 0-1 | 35 |
2007 |
5th Gibraltar Chess Festival | B23 Sicilian, Closed |
| 13. G Quillan vs Speelman |
| 0-1 | 63 |
2007 |
5th Gibraltar Chess Festival | B30 Sicilian |
| 14. G Quillan vs S Ansell |
| ½-½ | 80 |
2007 |
5th Gibraltar Chess Festival | B30 Sicilian |
| 15. G Quillan vs D Tan |
| 1-0 | 34 |
2007 |
4NCL 2006-07 | B52 Sicilian, Canal-Sokolsky (Rossolimo) Attack |
| 16. G Quillan vs D Harika |
| 0-1 | 41 |
2008 |
Gibraltar | B30 Sicilian |
| 17. G Quillan vs P Cramling |
 | 0-1 | 36 |
2008 |
Gibraltar | B43 Sicilian, Kan, 5.Nc3 |
| 18. G Quillan vs V Gashimov |
 | ½-½ | 40 |
2009 |
Gibtelecom | B27 Sicilian |
| 19. G Quillan vs V Gandrud |
| ½-½ | 103 |
2009 |
Gibtelecom | B51 Sicilian, Canal-Sokolsky (Rossolimo) Attack |
| 20. G Quillan vs P Carlsson |
| ½-½ | 50 |
2009 |
Gibtelecom | B52 Sicilian, Canal-Sokolsky (Rossolimo) Attack |
| 21. G Quillan vs E Berg |
| 0-1 | 51 |
2009 |
Gibtelecom | B51 Sicilian, Canal-Sokolsky (Rossolimo) Attack |