| Game |
| Result | Moves |
Year |
Event/Locale | Opening |
| 1. G Bordonada vs F J Sanz Alonso |
 | 1-0 | 21 |
1974 |
Nice ol (Men) | B89 Sicilian |
| 2. F J Sanz Alonso vs Tal |
| 0-1 | 27 |
1974 |
Nice olm | A28 English |
| 3. Keene vs F J Sanz Alonso |
 | 1-0 | 101 |
1975 |
International Tournament | E60 King's Indian Defense |
| 4. Filip vs F J Sanz Alonso |
| 1-0 | 43 |
1975 |
Olot | A04 Reti Opening |
| 5. Timman vs F J Sanz Alonso |
| 1-0 | 29 |
1976 |
Orense | A04 Reti Opening |
| 6. F J Sanz Alonso vs Larsen |
| 0-1 | 43 |
1976 |
Costa Brava | D79 Neo-Grunfeld, 6.O-O, Main line |
| 7. Szabo vs F J Sanz Alonso |
| 1-0 | 55 |
1976 |
Costa Brava | A67 Benoni, Taimanov Variation |
| 8. F J Sanz Alonso vs Beliavsky |
| 0-1 | 29 |
1978 |
Alicante (Spain) | C26 Vienna |
| 9. F J Sanz Alonso vs S Mariotti |
| 0-1 | 31 |
1978 |
Las Palmas | C01 French, Exchange |
| 10. Timman vs F J Sanz Alonso |
| 1-0 | 38 |
1978 |
Amsterdam | E19 Queen's Indian, Old Main line, 9.Qxc3 |
| 11. F J Sanz Alonso vs Larsen |
| 0-1 | 40 |
1978 |
Las Palmas | B08 Pirc, Classical |
| 12. F J Sanz Alonso vs Sosonko |
| 0-1 | 35 |
1978 |
Amsterdam | B22 Sicilian, Alapin |
| 13. Gligoric vs F J Sanz Alonso |
| 1-0 | 58 |
1978 |
Montilla | E43 Nimzo-Indian, Fischer Variation |
| 14. Miles vs F J Sanz Alonso |
| 1-0 | 49 |
1978 |
Montilla-Moriles | C53 Giuoco Piano |
| 15. F J Sanz Alonso vs Miles |
| 0-1 | 33 |
1978 |
Amsterdam | B22 Sicilian, Alapin |
| 16. F J Sanz Alonso vs W Shipman |
| 0-1 | 29 |
1983 |
US Open | A00 Uncommon Opening |
| 17. J Gallagher vs F J Sanz Alonso |
| 1-0 | 20 |
1988 |
Gijon | C34 King's Gambit Accepted |
| 18. Ivkov vs F J Sanz Alonso |
| 1-0 | 35 |
1989 |
Sevilla | C92 Ruy Lopez, Closed |
| 19. Illescas Cordoba vs F J Sanz Alonso |
| 1-0 | 42 |
1989 |
Leon (Spain) | C45 Scotch Game |
| 20. Kudrin vs F J Sanz Alonso |
| 1-0 | 46 |
1989 |
Salamanca (Spain) | C60 Ruy Lopez |
| 21. F J Sanz Alonso vs Zsuzsa Polgar |
| 0-1 | 70 |
1989 |
Leon | B27 Sicilian |
| 22. Illescas Cordoba vs F J Sanz Alonso |
| 1-0 | 47 |
1989 |
It (open) | C45 Scotch Game |
| 23. E Vladimirov vs F J Sanz Alonso |
| 1-0 | 36 |
1991 |
Oviedo rapid | A55 Old Indian, Main line |
| 24. F J Sanz Alonso vs Granda-Zuniga |
| 0-1 | 76 |
1991 |
x | B31 Sicilian, Rossolimo Variation |
| 25. Korchnoi vs F J Sanz Alonso |
| 1-0 | 66 |
1991 |
Salamanca | E91 King's Indian |
