| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. E Vasta vs D Pacheco |
| 1-0 | 15 | 1988 | Mar del Plata Open | B82 Sicilian, Scheveningen |
| 2. D Pacheco vs J Ye |
| 0-1 | 22 | 1989 | Manila Far East Bank op | E60 King's Indian Defense |
| 3. D Pacheco vs J Rosito |
| 0-1 | 59 | 1996 | Mar del Plata op | A46 Queen's Pawn Game |
| 4. F Braga vs D Pacheco |
| 1-0 | 31 | 1997 | Mar del Plata Open | B30 Sicilian |
| 5. D Pacheco vs A Giaccio |
| 0-1 | 65 | 1998 | Najdorf Festival op | A04 Reti Opening |
| 6. D Pacheco vs P Zarnicki |
| 0-1 | 40 | 2000 | Oz.com qual blitz | E04 Catalan, Open, 5.Nf3 |
| 7. M Ritter vs D Pacheco |
| 1-0 | 42 | 2000 | Oz.com qual blitz | A43 Old Benoni |
| 8. D Pacheco vs V Golod |
| 0-1 | 56 | 2000 | Oz.com qual blitz | D86 Grunfeld, Exchange |
| 9. D Pacheco vs K Vera |
| 0-1 | 39 | 2005 | Santa Cruz Hillman | A14 English |
| 10. Granda Zuniga vs D Pacheco |
| ½-½ | 11 | 2005 | Berman Hillman Tournament | E67 King's Indian, Fianchetto |
| 11. D Pacheco vs G Diaz Lopez |
| 1-0 | 24 | 2005 | American Continental | E01 Catalan, Closed |
| 12. D Gurevich vs D Pacheco |
 | 1-0 | 61 | 2005 | American Continental | A52 Budapest Gambit |
| 13. D Pacheco vs L Elias |
| 1-0 | 37 | 2005 | American Continental | A56 Benoni Defense |
| 14. D Pacheco vs D Mieles Palau |
| 1-0 | 48 | 2005 | American Continental | E05 Catalan, Open, Classical line |
| 15. R Leitao vs D Pacheco |
| 1-0 | 24 | 2005 | American Continental | A56 Benoni Defense |
| 16. S Alonso vs D Pacheco |
| ½-½ | 70 | 2005 | American Continental | C12 French, McCutcheon |
| 17. D Pacheco vs R Vera |
| 0-1 | 45 | 2005 | American Continental | D43 Queen's Gambit Declined Semi-Slav |
| 18. D Pacheco vs J F Pierrot |
| 0-1 | 33 | 2005 | American Continental | D94 Grunfeld |
| 19. D Flores vs D Pacheco |
| 1-0 | 44 | 2005 | American Continental | A04 Reti Opening |
| 20. M Kravtsiv vs D Pacheco |
| 1-0 | 48 | 2008 | Cappelle Open | C11 French |
| 21. D Pacheco vs A Sokolov |
| 0-1 | 61 | 2008 | Cappelle Open | E02 Catalan, Open, 5.Qa4 |
| 22. M Feng vs D Pacheco |
| 0-1 | 76 | 2017 | PRO Chess League (Atlantic) | A90 Dutch |
| 23. D Pacheco vs J Wang |
| 1-0 | 33 | 2017 | PRO Chess League (Atlantic) | D02 Queen's Pawn Game |
| 24. D Pacheco vs C Shen |
| 1-0 | 44 | 2017 | PRO Chess League (Atlantic) | A41 Queen's Pawn Game (with ...d6) |
| 25. M Brattain vs D Pacheco |
| ½-½ | 143 | 2017 | PRO Chess League (Atlantic) | A30 English, Symmetrical |
Kibitzing
