| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. J Gallagher vs Van der Sterren |
| 1-0 | 45 |
2000 |
34th Olympiad | B18 Caro-Kann, Classical |
| 2. J Gallagher vs H Dekan |
| 1-0 | 39 |
2005 |
Lenk Open | B18 Caro-Kann, Classical |
| 3. J Gallagher vs Y Simbolon |
| 1-0 | 56 |
2008 |
2008 Olympiad | B18 Caro-Kann, Classical |
| 4. J Gallagher vs F Berkes |
| ½-½ | 96 |
2008 |
2008 Olympiad | B18 Caro-Kann, Classical |
| 5. J Gallagher vs B Vuckovic |
 | 1-0 | 53 |
2009 |
10th European Individual Championship | B18 Caro-Kann, Classical |
| 6. J Gallagher vs Boehnisch |
| 1-0 | 57 |
2010 |
European Individual Championships | B18 Caro-Kann, Classical |
| 7. J Gallagher vs N Maevsky |
| 1-0 | 34 |
2011 |
12th European Individual Championship | B18 Caro-Kann, Classical |
| 8. J Gallagher vs C Dobre |
| ½-½ | 68 |
2012 |
13th European Individual Championship | B18 Caro-Kann, Classical |
| 9. J Gallagher vs D Solak |
| ½-½ | 69 |
2012 |
13th European Individual Championship | B18 Caro-Kann, Classical |
| 10. J Gallagher vs L Lenic |
| ½-½ | 67 |
2013 |
European Individual Championships | B18 Caro-Kann, Classical |
| 11. J Gallagher vs O N Al Ali |
| 1-0 | 46 |
2013 |
Tradewise Gibraltar | B18 Caro-Kann, Classical |
