| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. E De Castro vs R Cassidy |
| ½-½ | 22 |
1966 |
Havana ol final-C | D53 Queen's Gambit Declined |
| 2. E De Castro vs E Macskasy |
| 0-1 | 40 |
1968 |
Lugano ol (Men) | A42 Modern Defense, Averbakh System |
| 3. E De Castro vs W Hook |
| 0-1 | 44 |
1968 |
Lugano ol (Men) | C03 French, Tarrasch |
| 4. Jansa vs E De Castro |
| 0-1 | 39 |
1968 |
Lugano | B43 Sicilian, Kan, 5.Nc3 |
| 5. Keene vs E De Castro |
 | ½-½ | 109 |
1968 |
Lugano Olympiad | A07 King's Indian Attack |
| 6. Gligoric vs E De Castro |
| 1-0 | 63 |
1968 |
Meralco Open | D55 Queen's Gambit Declined |
| 7. Ribli vs E De Castro |
| ½-½ | 41 |
1970 |
Siegen (ol) | B80 Sicilian, Scheveningen |
| 8. R Cosulich vs E De Castro |
| ½-½ | 32 |
1970 |
Siegen olm | B94 Sicilian, Najdorf |
| 9. E De Castro vs L Ogaard |
| 0-1 | 30 |
1972 |
Skopje ol (Men) | A45 Queen's Pawn Game |
| 10. A J Whiteley vs E De Castro |
| 1-0 | 25 |
1972 |
Skopje ol (Men) fin-B | A32 English, Symmetrical Variation |
| 11. E Paoli vs E De Castro |
| 1-0 | 39 |
1972 |
Skopje ol (Men) fin-B | B23 Sicilian, Closed |
| 12. E De Castro vs Renato Naranja |
| ½-½ | 20 |
1973 |
Manila | E94 King's Indian, Orthodox |
| 13. E De Castro vs Kavalek |
| 0-1 | 37 |
1973 |
Manila | E92 King's Indian |
| 14. E De Castro vs Najdorf |
| ½-½ | 68 |
1973 |
Manila | E92 King's Indian |
| 15. Gheorghiu vs E De Castro |
| 1-0 | 41 |
1973 |
Manila | B46 Sicilian, Taimanov Variation |
| 16. Lombardy vs E De Castro |
| 1-0 | 38 |
1973 |
Manila | B48 Sicilian, Taimanov Variation |
| 17. H Ardiansyah vs E De Castro |
| ½-½ | 78 |
1973 |
Manila | B83 Sicilian |
| 18. E De Castro vs Quinteros |
| 0-1 | 41 |
1973 |
Manila | B51 Sicilian, Canal-Sokolsky (Rossolimo) Attack |
| 19. E De Castro vs R T Cardoso |
| ½-½ | 17 |
1973 |
Manila | A04 Reti Opening |
| 20. E De Castro vs Gligoric |
 | 1-0 | 60 |
1973 |
Manila 16/600 | D93 Grunfeld, with Bf4 & e3 |
| 21. Ivkov vs E De Castro |
| 1-0 | 45 |
1973 |
Manila | A30 English, Symmetrical |
| 22. E De Castro vs Larsen |
| 0-1 | 38 |
1973 |
Manila | A29 English, Four Knights, Kingside Fianchetto |
| 23. S Tatai vs E De Castro |
| 1-0 | 37 |
1973 |
Manila | E10 Queen's Pawn Game |
| 24. E Torre vs E De Castro |
| ½-½ | 17 |
1973 |
Manila | B52 Sicilian, Canal-Sokolsky (Rossolimo) Attack |
| 25. M Wotulo vs E De Castro |
| ½-½ | 78 |
1973 |
Manila | B44 Sicilian |