| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. S Swanson vs M Abarca Aguirre |
| 1-0 | 45 |
1982 |
Luzern ol (Men) | B53 Sicilian |
| 2. S Macagno vs M Abarca Aguirre |
| 0-1 | 34 |
1982 |
Pan American-ch U20 | B68 Sicilian, Richter-Rauzer Attack, 7...a6 Defense, 9...Be7 |
| 3. M Abarca Aguirre vs C Barry |
| 1-0 | 55 |
1982 |
Luzern ol (Men) | D55 Queen's Gambit Declined |
| 4. M Abarca Aguirre vs E Almada |
| 1-0 | 31 |
1982 |
Pan American-ch U20 | D07 Queen's Gambit Declined, Chigorin Defense |
| 5. M Abarca Aguirre vs Granda-Zuniga |
 | 0-1 | 21 |
1982 |
Pan American-ch U20 | D47 Queen's Gambit Declined Semi-Slav |
| 6. M Abarca Aguirre vs S Trindade |
| 0-1 | 56 |
1982 |
Pan American-ch U20 | A43 Old Benoni |
| 7. M Abarca Aguirre vs B Moran |
| 1-0 | 23 |
1982 |
Pan American-ch U20 | E12 Queen's Indian |
| 8. R Diaz vs M Abarca Aguirre |
| 0-1 | 57 |
1982 |
Pan American-ch U20 | B56 Sicilian |
| 9. M Condie vs M Abarca Aguirre |
| 1-0 | 57 |
1984 |
Wch U20 | D00 Queen's Pawn Game |
| 10. M Abarca Aguirre vs A Kolev |
| 1-0 | 36 |
1984 |
Wch U20 | E12 Queen's Indian |
| 11. Oll vs M Abarca Aguirre |
| ½-½ | 24 |
1984 |
Wch U20 | D30 Queen's Gambit Declined |
| 12. M Abarca Aguirre vs L Rueda |
| 1-0 | 44 |
1984 |
Wch U20 | A60 Benoni Defense |
| 13. M Abarca Aguirre vs B Ostenstad |
| 0-1 | 32 |
1984 |
Wch U20 | E12 Queen's Indian |
| 14. M Abarca Aguirre vs R Buckmire |
| 1-0 | 73 |
1984 |
Wch U20 | A57 Benko Gambit |
| 15. R Chavez Chavez vs M Abarca Aguirre |
| 0-1 | 37 |
1985 |
Corrientes zt | B56 Sicilian |
| 16. M Abarca Aguirre vs Barbero |
| 1-0 | 42 |
1985 |
Corrientes zt | D37 Queen's Gambit Declined |
| 17. J S Neto vs M Abarca Aguirre |
| 1-0 | 68 |
1985 |
Corrientes zt | D32 Queen's Gambit Declined, Tarrasch |
| 18. M Abarca Aguirre vs I Morovic |
| 0-1 | 41 |
1985 |
Corrientes zt | A54 Old Indian, Ukrainian Variation, 4.Nf3 |
| 19. L Bronstein vs M Abarca Aguirre |
| 1-0 | 40 |
1985 |
Corrientes zt | B80 Sicilian, Scheveningen |
| 20. M Abarca Aguirre vs Granda-Zuniga |
| 0-1 | 44 |
1985 |
Villa Gesell tt | E12 Queen's Indian |
| 21. M Abarca Aguirre vs J H Gomez-Baillo |
| 0-1 | 68 |
1985 |
Corrientes zt | D51 Queen's Gambit Declined |
| 22. M Abarca Aguirre vs B Roselli Mailhe |
| 1-0 | 32 |
1985 |
Corrientes zt | E83 King's Indian, Samisch |
| 23. H Van Riemsdijk vs M Abarca Aguirre |
| 0-1 | 28 |
1985 |
Corrientes zt | B89 Sicilian |
| 24. M Abarca Aguirre vs Quinteros |
| 0-1 | 62 |
1985 |
Corrientes zt | E82 King's Indian, Samisch, double Fianchetto Variation |
| 25. M Abarca Aguirre vs P Lamas-Baliero |
| 1-0 | 53 |
1987 |
Pan American-chT | E12 Queen's Indian |