| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 1. F Peralta vs M Larrea |
| ½-½ | 25 | 1997 | Pan American-ch U26 | E61 King's Indian |
| 2. M Larrea vs Gustavo Garello |
| 0-1 | 40 | 1997 | URU-ch | A80 Dutch |
| 3. M Larrea vs J F Cubas |
| 0-1 | 37 | 1997 | Pan American-ch U26 | B90 Sicilian, Najdorf |
| 4. M Larrea vs N Ulaneo |
| 1-0 | 22 | 2001 | Semana Santa op | B40 Sicilian |
| 5. M Larrea vs M Nunez |
| 1-0 | 17 | 2001 | URU-ch XIV prel del Interior | A07 King's Indian Attack |
| 6. A Bauza vs M Larrea |
| 1-0 | 25 | 2001 | Uruguayan Championship | B22 Sicilian, Alapin |
| 7. M Larrea vs D Izquierdo |
| 0-1 | 29 | 2001 | Uruguayan Championship | C50 Giuoco Piano |
| 8. J Escofet vs M Larrea |
| ½-½ | 30 | 2001 | Uruguayan Championship | A05 Reti Opening |
| 9. M Larrea vs M Crosa Coll |
| 0-1 | 44 | 2001 | Uruguayan Championship | B33 Sicilian |
| 10. S Granara Barreto vs M Larrea |
| 0-1 | 65 | 2001 | Uruguayan Championship | A48 King's Indian |
| 11. M Larrea vs B Roselli Mailhe |
| 0-1 | 42 | 2001 | Uruguayan Championship | E86 King's Indian, Samisch, Orthodox, 7.Nge2 c6 |
| 12. G Curi vs M Larrea |
| 1-0 | 39 | 2001 | Uruguayan Championship | B89 Sicilian |
| 13. J Riverol vs M Larrea |
| ½-½ | 64 | 2001 | Uruguayan Championship | E63 King's Indian, Fianchetto, Panno Variation |
| 14. M Larrea vs R Muniz |
| 0-1 | 44 | 2001 | Uruguayan Championship | B45 Sicilian, Taimanov |
| 15. M Larrea vs A Giaccio |
| 0-1 | 33 | 2002 | URU-ch | C02 French, Advance |
| 16. M Larrea vs M Mchedlishvili |
| 0-1 | 30 | 2002 | Bled Olympiad | B57 Sicilian |
| 17. M Larrea vs V Bui |
| 0-1 | 62 | 2002 | Bled Olympiad | D31 Queen's Gambit Declined |
| 18. M Mikac vs M Larrea |
| ½-½ | 77 | 2002 | Bled Olympiad | A48 King's Indian |
| 19. M Larrea vs E Scarella |
| 0-1 | 97 | 2004 | Vicente Lopez Cup CMSalud | B25 Sicilian, Closed |
| 20. Shredder vs M Larrea |
| 1-0 | 25 | 2004 | ITT Copa CMSalud | B51 Sicilian, Canal-Sokolsky (Rossolimo) Attack |
| 21. R Hungaski vs M Larrea |
| 0-1 | 37 | 2004 | Buenos Aires Najdorf-B | B93 Sicilian, Najdorf, 6.f4 |
| 22. M Larrea vs S Mareco |
| 1-0 | 22 | 2004 | Buenos Aires Najdorf-B | E93 King's Indian, Petrosian System |
| 23. J F Cubas vs M Larrea |
| 1-0 | 39 | 2004 | Buenos Aires Najdorf-B | B56 Sicilian |
| 24. Van Huy Nguyen vs M Larrea |
| 1-0 | 37 | 2004 | Calvia Olympiad | B56 Sicilian |
| 25. P Oatlhotse vs M Larrea |
| 1-0 | 53 | 2004 | Calvia Olympiad | D13 Queen's Gambit Declined Slav, Exchange Variation |
Kibitzing
