| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. N Regan vs G Andruet |
| 0-1 | 39 |
1990 |
Chartres op | A04 Reti Opening |
| 2. N Regan vs R Gjergji |
| 0-1 | 30 |
1991 |
Mamaia | C33 King's Gambit Accepted |
| 3. N Regan vs D McMahon |
| ½-½ | 32 |
1991 |
It (open), Dublin | C23 Bishop's Opening |
| 4. N Regan vs C Darby |
| 1-0 | 45 |
1991 |
It (open), Dublin | C30 King's Gambit Declined |
| 5. Mrunalini Kunte vs N Regan |
| 1-0 | 37 |
1991 |
ch World juniors Mamaia ROM | E87 King's Indian, Samisch, Orthodox |
| 6. N Regan vs T Kalisch |
| 1-0 | 31 |
1991 |
Philadelphia op | C33 King's Gambit Accepted |
| 7. N Regan vs T Zagorskaya |
| 1-0 | 46 |
1994 |
Olympiad Womans | C33 King's Gambit Accepted |
| 8. N Regan vs J H Hodgson |
 | ½-½ | 55 |
1994 |
Lloyds Bank op 18th | B21 Sicilian, 2.f4 and 2.d4 |
| 9. N Regan vs M Cuevas-Rodriguez |
| 1-0 | 33 |
1997 |
Ch European Union w | C33 King's Gambit Accepted |
| 10. N Regan vs D Collins |
| 1-0 | 26 |
1997 |
Ch European Union w | C33 King's Gambit Accepted |
| 11. N Regan vs A Weng |
| 0-1 | 28 |
1998 |
GER-ENG m (women) | C33 King's Gambit Accepted |
| 12. A Koglin vs N Regan |
| ½-½ | 36 |
1998 |
GER-ENG (Women) | B42 Sicilian, Kan |
| 13. N Regan vs J Nill |
| ½-½ | 53 |
1998 |
GER-ENG m (women) | C33 King's Gambit Accepted |
| 14. N Regan vs M Litinskaya-Shul |
| 0-1 | 23 |
1998 |
BL 9899 (Women) | B21 Sicilian, 2.f4 and 2.d4 |
| 15. N Regan vs M Sebag |
| 0-1 | 39 |
1999 |
Zone 1.1 (women) | B21 Sicilian, 2.f4 and 2.d4 |
| 16. D Tebb vs N Regan |
| ½-½ | 48 |
1999 |
4NCL | C23 Bishop's Opening |
| 17. D Dengler vs N Regan |
| 0-1 | 44 |
1999 |
Bundesliga 1998/99 (w), Germany | D20 Queen's Gambit Accepted |
| 18. N Regan vs A Kucypera |
| 0-1 | 34 |
2000 |
BL9900 W | B22 Sicilian, Alapin |
| 19. M Heidenfeld vs N Regan |
| 1-0 | 36 |
2001 |
4NCL | B02 Alekhine's Defense |
| 20. N Regan vs M Buckley |
| 1-0 | 40 |
2001 |
4NCL | C17 French, Winawer, Advance |
| 21. N Regan vs E Howard |
| 1-0 | 24 |
2001 |
4NCL | A02 Bird's Opening |
| 22. N Regan vs M Yurenok |
| 1-0 | 69 |
2002 |
4NCL | A03 Bird's Opening |
| 23. G Charleshouse vs N Regan |
 | 1-0 | 38 |
2004 |
4NCL | B02 Alekhine's Defense |
| 24. E Carlsen vs N Regan |
| ½-½ | 45 |
2009 |
17th European Team Championship (Women) | B03 Alekhine's Defense |
| 25. M Stojanovic vs N Regan |
| 0-1 | 41 |
2009 |
17th European Team Championship (Women) | B03 Alekhine's Defense |