| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. F J Sanz Alonso vs J Lechtynsky |
| 1-0 | 40 |
1974 |
Nice ol (Men) fin-A | D37 Queen's Gambit Declined |
| 2. G Bordonada vs F J Sanz Alonso |
 | 1-0 | 21 |
1974 |
Nice ol (Men) | B89 Sicilian |
| 3. Filip vs F J Sanz Alonso |
| 1-0 | 43 |
1975 |
Olot | A04 Reti Opening |
| 4. Timman vs F J Sanz Alonso |
| 1-0 | 29 |
1976 |
Orense | A04 Reti Opening |
| 5. Szabo vs F J Sanz Alonso |
| 1-0 | 55 |
1976 |
Costa Brava | A67 Benoni, Taimanov Variation |
| 6. Miles vs F J Sanz Alonso |
| 1-0 | 49 |
1978 |
Montilla-Moriles | C53 Giuoco Piano |
| 7. Gligoric vs F J Sanz Alonso |
| 1-0 | 58 |
1978 |
Montilla | E43 Nimzo-Indian, Fischer Variation |
| 8. Timman vs F J Sanz Alonso |
| 1-0 | 38 |
1978 |
Amsterdam | E19 Queen's Indian, Old Main line, 9.Qxc3 |
| 9. F J Sanz Alonso vs I Jones |
| 1-0 | 43 |
1982 |
Marbella (Spain) | C26 Vienna |
| 10. F J Sanz Alonso vs Adianto |
| 1-0 | 27 |
1982 |
Olympiad | B45 Sicilian, Taimanov |
| 11. J Gallagher vs F J Sanz Alonso |
| 1-0 | 20 |
1988 |
Gijon | C34 King's Gambit Accepted |
| 12. Illescas-Cordoba vs F J Sanz Alonso |
| 1-0 | 42 |
1989 |
Leon (Spain) | C45 Scotch Game |
| 13. Ivkov vs F J Sanz Alonso |
| 1-0 | 35 |
1989 |
Sevilla | C92 Ruy Lopez, Closed |
| 14. Kudrin vs F J Sanz Alonso |
| 1-0 | 46 |
1989 |
Salamanca (Spain) | C60 Ruy Lopez |
| 15. F J Sanz Alonso vs Granda-Zuniga |
| 1-0 | 38 |
1990 |
Leon 20 | B30 Sicilian |
| 16. Korchnoi vs F J Sanz Alonso |
| 1-0 | 66 |
1991 |
Salamanca | E91 King's Indian |
| 17. E Vladimirov vs F J Sanz Alonso |
| 1-0 | 26 |
1991 |
Dos Hermanas | E90 King's Indian |
| 18. E Vladimirov vs F J Sanz Alonso |
| 1-0 | 36 |
1991 |
Oviedo rapid | A55 Old Indian, Main line |
| 19. F J Sanz Alonso vs F De las Heras |
| 1-0 | 10 |
1991 |
Ibercaja Open | C33 King's Gambit Accepted |
| 20. F J Sanz Alonso vs J L Fernandez Saavedra |
| 1-0 | 41 |
2001 |
TCh-ESP Div 2 | C77 Ruy Lopez |
| 21. F J Sanz Alonso vs Le Andrade |
| 1-0 | 35 |
2001 |
43rd Tch-POR | B56 Sicilian |
| 22. Agrest vs F J Sanz Alonso |
| 1-0 | 34 |
2005 |
III Open Bajada de la Virgen | A15 English |
| 23. E Gleizerov vs F J Sanz Alonso |
| 1-0 | 37 |
2005 |
III Open Bajada de la Virgen | A62 Benoni, Fianchetto Variation |
| 24. F J Sanz Alonso vs J Vila-Gazquez |
| 1-0 | 46 |
2006 |
XXIV Andorra Open | B48 Sicilian, Taimanov Variation |
| 25. M Casella vs F J Sanz Alonso |
| 1-0 | 40 |
2006 |
Los Angeles op | A82 Dutch, Staunton Gambit |
