| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. Stripunsky vs S Sanchez Castillo |
| 1-0 | 29 |
1999 |
Caribbean Open | B22 Sicilian, Alapin |
| 2. B Mitrovic vs S Sanchez Castillo |
| 1-0 | 19 |
2001 |
WJun Women | A49 King's Indian, Fianchetto without c4 |
| 3. S Sanchez Castillo vs S Chang |
| 1-0 | 25 |
2001 |
American Continental Women | A04 Reti Opening |
| 4. S Sanchez Castillo vs E Ubiennykh |
 | 0-1 | 16 |
2001 |
WJun Women | C22 Center Game |
| 5. E La Rosa vs S Sanchez Castillo |
 | 0-1 | 28 |
2001 |
American Continental Women | A45 Queen's Pawn Game |
| 6. S Sanchez Castillo vs N Hryhorenko |
| 0-1 | 75 |
2001 |
WJun Women | C01 French, Exchange |
| 7. S Pina Vega vs S Sanchez Castillo |
| 1-0 | 40 |
2001 |
American Continental Women | C00 French Defense |
| 8. S Sanchez Castillo vs Zhao Xue |
| 1-0 | 39 |
2001 |
WJun Women | B27 Sicilian |
| 9. S Sanchez Castillo vs L Duran |
| ½-½ | 47 |
2001 |
American Continental Women | B50 Sicilian |
| 10. J Volosjuk vs S Sanchez Castillo |
| 0-1 | 34 |
2001 |
WJun Women | C00 French Defense |
| 11. S Sanchez Castillo vs L Burijovich |
| ½-½ | 58 |
2001 |
American Continental Women | B47 Sicilian, Taimanov (Bastrikov) Variation |
| 12. R Aarthie vs S Sanchez Castillo |
| 1-0 | 54 |
2001 |
WJun Women | C05 French, Tarrasch |
| 13. E Moncayo Romero vs S Sanchez Castillo |
| 1-0 | 32 |
2001 |
American Continental Women | C00 French Defense |
| 14. S Sanchez Castillo vs J Jackova |
| 0-1 | 26 |
2001 |
WJun Women | C53 Giuoco Piano |
| 15. N Sequeda vs S Sanchez Castillo |
| 0-1 | 34 |
2001 |
American Continental Women | C02 French, Advance |
| 16. Koneru vs S Sanchez Castillo |
| 1-0 | 45 |
2001 |
WJun Women | A04 Reti Opening |
| 17. S Sanchez Castillo vs A Otazo |
| ½-½ | 72 |
2001 |
American Continental Women | C22 Center Game |
| 18. S Sanchez Castillo vs S Meenakshi |
| 0-1 | 39 |
2001 |
WJun Women | C41 Philidor Defense |
| 19. S Sanchez Castillo vs I Martinez Porras |
| 1-0 | 64 |
2001 |
American Continental Women | B28 Sicilian, O'Kelly Variation |
| 20. S Sanchez Castillo vs Zsuzsa Polgar |
 | 0-1 | 86 |
2004 |
36th Olympiad, Women | B47 Sicilian, Taimanov (Bastrikov) Variation |
| 21. Z Mamedjarova vs S Sanchez Castillo |
| ½-½ | 21 |
2004 |
36th Olympiad, Women | A22 English |
| 22. S Sanchez Castillo vs R Cima |
| 0-1 | 30 |
2004 |
36th Olympiad, Women | C22 Center Game |
| 23. I Ivanisevic vs S Sanchez Castillo |
| 1-0 | 36 |
2006 |
XXII Reykjavik Open | D43 Queen's Gambit Declined Semi-Slav |
| 24. S Sanchez Castillo vs J Houska |
 | 1-0 | 62 |
2006 |
37th Chess Olympiad: Women | C22 Center Game |
| 25. A Maric vs S Sanchez Castillo |
 | 0-1 | 57 |
2006 |
37th Chess Olympiad: Women | D13 Queen's Gambit Declined Slav, Exchange Variation |