Game |
| Result | Moves |
Year | Event/Locale | Opening |
1. R Flores Alvarez vs M Castillo |
| 1-0 | 34 | 1927 | Santiago | C01 French, Exchange |
2. R Flores Alvarez vs M Castillo |
| 1-0 | 42 | 1927 | Santiago | B23 Sicilian, Closed |
3. C Pulcherio vs M Castillo |
| 1-0 | 36 | 1928 | 3rd South American Championship | E10 Queen's Pawn Game |
4. M Castillo vs J C Balparda |
| 0-1 | 40 | 1928 | 3rd South American Championship | C50 Giuoco Piano |
5. M Castillo vs J Montalban |
| ½-½ | 43 | 1928 | 3rd South American Championship | B01 Scandinavian |
6. M Castillo vs B H Villegas |
 | 1-0 | 46 | 1928 | 3rd South American Championship | B40 Sicilian |
7. W O Cruz vs M Castillo |
| 0-1 | 41 | 1928 | 3rd South American Championship | D51 Queen's Gambit Declined |
8. M Castillo vs J B Hernandez |
| 1-0 | 30 | 1928 | 3rd South American Championship | C13 French |
9. J de Souza Mendes vs M Castillo |
| 0-1 | 39 | 1928 | 3rd South American Championship | E15 Queen's Indian |
10. C H Maderna vs M Castillo |
| 1-0 | 34 | 1928 | 3rd South American Championship | D85 Grunfeld |
11. L Palau vs M Castillo |
| 1-0 | 41 | 1928 | 3rd South American Championship | C56 Two Knights |
12. C Anfruns vs M Castillo |
| ½-½ | 32 | 1928 | 3rd South American Championship | E30 Nimzo-Indian, Leningrad |
13. M Castillo vs A Perea |
| 1-0 | 28 | 1928 | 3rd South American Championship | D52 Queen's Gambit Declined |
14. M Castillo vs V T Romano |
| ½-½ | 41 | 1928 | 3rd South American Championship | B40 Sicilian |
15. R Grau vs M Castillo |
 | 1-0 | 20 | 1928 | 3rd South American Championship | D00 Queen's Pawn Game |
16. L Vianna vs M Castillo |
 | 0-1 | 17 | 1928 | 3rd South American Championship | C33 King's Gambit Accepted |
17. M Castillo vs J Gabarain |
| 0-1 | 39 | 1928 | 3rd South American Championship | E11 Bogo-Indian Defense |
18. M Castillo vs S Ureta |
| 1-0 | 36 | 1928 | 3rd South American Championship | C17 French, Winawer, Advance |
19. M Castillo vs Letelier |
| 0-1 | 37 | 1932 | Santiago | C22 Center Game |
20. M Castillo vs E Reed Valenzuela |
| 0-1 | 57 | 1932 | Valparaiso | E16 Queen's Indian |
21. M Castillo vs Letelier |
| 0-1 | 29 | 1932 | Santiago | C53 Giuoco Piano |
22. M Castillo vs J M Cristia |
| 1-0 | 24 | 1934 | South American Championship 1934/35 | D09 Queen's Gambit Declined, Albin Counter Gambit, 5.g3 |
23. I Pleci vs M Castillo |
| 1-0 | 52 | 1934 | South American Championship 1934/35 | D55 Queen's Gambit Declined |
24. M Castillo vs C Guimard |
| 0-1 | 34 | 1934 | South American Championship 1934/35 | D37 Queen's Gambit Declined |
25. C Hounie Fleurquin vs M Castillo |
 | 1-0 | 20 | 1934 | South American Championship 1934/35 | B02 Alekhine's Defense |