| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. G Timoshchenko vs M Pacheco |
| 1-0 | 47 |
2002 |
Bled ol (Men) | E12 Queen's Indian |
| 2. M Pacheco vs C Barus |
| 0-1 | 49 |
2002 |
Bled Olympiad | E15 Queen's Indian |
| 3. C McNab vs M Pacheco |
| 1-0 | 60 |
2002 |
Bled Olympiad | A29 English, Four Knights, Kingside Fianchetto |
| 4. M Pacheco vs Illescas-Cordoba |
| 0-1 | 65 |
2002 |
Bled Olympiad | E00 Queen's Pawn Game |
| 5. M Pacheco vs Z Izoria |
| 0-1 | 83 |
2003 |
World Junior Championships | E91 King's Indian |
| 6. Kanep vs M Pacheco |
| 1-0 | 28 |
2003 |
World Junior Championships | D11 Queen's Gambit Declined Slav |
| 7. R Sadykov vs M Pacheco |
| 1-0 | 28 |
2003 |
World Junior Championships | C18 French, Winawer |
| 8. D Schneider vs M Pacheco |
| 1-0 | 87 |
2003 |
World Junior Championships | C17 French, Winawer, Advance |
| 9. A Corke vs M Pacheco |
| 1-0 | 70 |
2004 |
36th Olympiad | D13 Queen's Gambit Declined Slav, Exchange Variation |
| 10. S Barrientos-Chavarriaga vs M Pacheco |
| 1-0 | 78 |
2004 |
36th Olympiad | C01 French, Exchange |
| 11. M Bluvshtein vs M Pacheco |
| 1-0 | 49 |
2004 |
36th Olympiad | D17 Queen's Gambit Declined Slav |
| 12. E Campos vs M Pacheco |
| 1-0 | 35 |
2004 |
36th Olympiad | B40 Sicilian |
| 13. J F Cubas vs M Pacheco |
| 1-0 | 55 |
2004 |
36th Olympiad | B40 Sicilian |
| 14. Zhao Zong Yuan vs M Pacheco |
| 1-0 | 42 |
2006 |
37th Chess Olympiad | E47 Nimzo-Indian, 4.e3 O-O 5.Bd3 |
| 15. K Lie vs M Pacheco |
| 1-0 | 41 |
2006 |
37th Chess Olympiad | C02 French, Advance |
| 16. J Markos vs M Pacheco |
| 1-0 | 37 |
2006 |
37th Chess Olympiad | D15 Queen's Gambit Declined Slav |
| 17. M Pacheco vs A Bachmann |
 | 0-1 | 12 |
2006 |
37th Chess Olympiad | E94 King's Indian, Orthodox |
| 18. M Pacheco vs E Berg |
| 0-1 | 77 |
2006 |
37th Chess Olympiad | D13 Queen's Gambit Declined Slav, Exchange Variation |
