| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. J Gallagher vs R Bellin |
| 0-1 | 46 |
1985 |
London op | C34 King's Gambit Accepted |
| 2. J Gallagher vs B Jacobs |
 | 0-1 | 25 |
1985 |
4 | C35 King's Gambit Accepted, Cunningham |
| 3. J Gallagher vs C Flear |
| ½-½ | 30 |
1986 |
Clermont | C36 King's Gambit Accepted, Abbazia Defense |
| 4. J Gallagher vs R De Coverly |
 | 1-0 | 34 |
1987 |
Leighton Buzzard | C34 King's Gambit Accepted |
| 5. J Gallagher vs F J Sanz Alonso |
 | 1-0 | 20 |
1988 |
Gijon | C34 King's Gambit Accepted |
| 6. J Gallagher vs S Jackson |
 | 1-0 | 41 |
1988 |
GBR-ch Blackpool | C34 King's Gambit Accepted |
| 7. J Gallagher vs Conquest |
 | 0-1 | 35 |
1988 |
BCF-ch | C34 King's Gambit Accepted |
| 8. J Gallagher vs A Greenfeld |
 | ½-½ | 50 |
1988 |
Tel-Aviv | C36 King's Gambit Accepted, Abbazia Defense |
| 9. J Gallagher vs P Orlov |
| 1-0 | 17 |
1988 |
Royan op | C36 King's Gambit Accepted, Abbazia Defense |
| 10. J Gallagher vs B Schumacher |
| 1-0 | 20 |
1989 |
Mendrisio open | C34 King's Gambit Accepted |
| 11. J Gallagher vs Hebden |
| ½-½ | 36 |
1989 |
It-B, Hastings | C35 King's Gambit Accepted, Cunningham |
| 12. J Gallagher vs P Morris |
 | 1-0 | 18 |
1990 |
Hastings | C36 King's Gambit Accepted, Abbazia Defense |
| 13. J Gallagher vs G Lane |
| 1-0 | 55 |
1990 |
Hastings | C34 King's Gambit Accepted |
| 14. J Gallagher vs Chiburdanidze |
| 0-1 | 31 |
1990 |
Biel-Tbilisi | C35 King's Gambit Accepted, Cunningham |
| 15. J Gallagher vs Flear |
| ½-½ | 30 |
1990 |
Paris m/1 | C34 King's Gambit Accepted |
| 16. J Gallagher vs M Schmeidler |
 | 0-1 | 24 |
1990 |
Lyon | C35 King's Gambit Accepted, Cunningham |
| 17. J Gallagher vs E Boulard |
 | 1-0 | 35 |
1990 |
Paris-ch | C36 King's Gambit Accepted, Abbazia Defense |
| 18. J Gallagher vs E Vladimirov |
| ½-½ | 13 |
1990 |
Hastings | C35 King's Gambit Accepted, Cunningham |
| 19. J Gallagher vs Campora |
 | 1-0 | 42 |
1990 |
Biel-B | C36 King's Gambit Accepted, Abbazia Defense |
| 20. J Gallagher vs Bodelier |
 | 1-0 | 19 |
1991 |
Bad Worishofen | C34 King's Gambit Accepted |
| 21. J Gallagher vs Huebner |
| ½-½ | 22 |
1991 |
Switzerland-tm | C34 King's Gambit Accepted |
| 22. J Gallagher vs Balashov |
 | 1-0 | 35 |
1991 |
Lenk op | C36 King's Gambit Accepted, Abbazia Defense |
| 23. J Gallagher vs M Dutreeuw |
| ½-½ | 53 |
1991 |
It (open), Brocco | C36 King's Gambit Accepted, Abbazia Defense |
| 24. J Gallagher vs R Ziatdinov |
 | 1-0 | 62 |
1991 |
Lenk op | C34 King's Gambit Accepted |
| 25. J Gallagher vs A Chudinovskikh |
| 1-0 | 19 |
1991 |
Lenk op | C36 King's Gambit Accepted, Abbazia Defense |