| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. D Gurevich vs N Mariano |
| 0-1 | 58 |
1995 |
National Op | E99 King's Indian, Orthodox, Taimanov |
| 2. Leong Voon Choon vs N Mariano |
| 0-1 | 27 |
2001 |
1st Asean Open | B21 Sicilian, 2.f4 and 2.d4 |
| 3. N Mariano vs Nguyen Thanh Son |
| 0-1 | 68 |
2001 |
1st Sea Chess TCh | C42 Petrov Defense |
| 4. Ak Hira Pg Mohd Omar vs N Mariano |
| 0-1 | 32 |
2001 |
1st Asean Open | B54 Sicilian |
| 5. W Theerapabpaisit vs N Mariano |
| 0-1 | 25 |
2001 |
1st Sea Chess TCh | B54 Sicilian |
| 6. Edwin Gellecania vs N Mariano |
| 0-1 | 30 |
2001 |
1st Asean Open | E73 King's Indian |
| 7. N Mariano vs Aung Thant Zin |
| 0-1 | 31 |
2001 |
1st Asean Open | B23 Sicilian, Closed |
| 8. S Rocha vs N Mariano |
| 0-1 | 32 |
2002 |
Bled Olympiad | B01 Scandinavian |
| 9. N Mariano vs H Melkumyan |
| 0-1 | 66 |
2003 |
Wch U14 | B42 Sicilian, Kan |
| 10. S Safin vs N Mariano |
 | 0-1 | 24 |
2004 |
6th Dubai Open | E62 King's Indian, Fianchetto |
| 11. N Mariano vs Y Kruppa |
| 0-1 | 23 |
2004 |
6th Dubai Open | C19 French, Winawer, Advance |
| 12. A Anastasian vs N Mariano |
| 0-1 | 57 |
2004 |
6th Dubai Open | E92 King's Indian |
| 13. N Mariano vs Adianto |
| 0-1 | 39 |
2005 |
HB Global Chess Challenge | B12 Caro-Kann Defense |
| 14. N Mariano vs G Kacheishvili |
| 0-1 | 35 |
2005 |
7th Dubai Open Chess Championship | B23 Sicilian, Closed |
| 15. N Mariano vs Wang Hao |
| 0-1 | 53 |
2005 |
2nd Dato' Arthur Tan Malaysian Open | C19 French, Winawer, Advance |
| 16. Adianto vs N Mariano |
| 0-1 | 34 |
2005 |
2nd Dato' Arthur Tan Malaysian Open | A57 Benko Gambit |
| 17. S Nagle vs N Mariano |
| 0-1 | 30 |
2005 |
HB Global Chess Challenge | E97 King's Indian |
| 18. M Sorokin vs N Mariano |
| 0-1 | 38 |
2005 |
7th Dubai Open Chess Championship | A15 English |
