| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. F Riva vs P Lubrano |
| 1-0 | 42 | 1995 | Martinez Acosta mem-B corr | C60 Ruy Lopez |
| 27. F Riva vs T J Craig |
| ½-½ | 19 | 1995 | Martinez Acosta mem-B corr | B93 Sicilian, Najdorf, 6.f4 |
| 28. F Riva vs I Brooks |
| 1-0 | 43 | 1995 | Martinez Acosta mem-B corr | B42 Sicilian, Kan |
| 29. F Riva vs J Barrance |
| ½-½ | 41 | 1995 | Martinez Acosta mem-B corr | B44 Sicilian |
| 30. F Riva vs R G Alvarez |
| 0-1 | 33 | 1995 | Martinez Acosta mem-B corr | B76 Sicilian, Dragon, Yugoslav Attack |
| 31. S Peschardt vs F Riva |
| ½-½ | 39 | 1995 | Martinez Acosta mem-B corr | B25 Sicilian, Closed |
| 32. G Morais vs F Riva |
| 1-0 | 47 | 1995 | Martinez Acosta mem-B corr | B33 Sicilian |
| 33. C Johansson vs F Riva |
| ½-½ | 25 | 1995 | Martinez Acosta mem-B corr | B33 Sicilian |
| 34. M E Hedrera vs F Riva |
| ½-½ | 24 | 1995 | Martinez Acosta mem-B corr | B33 Sicilian |
| 35. M A Frank vs F Riva |
| ½-½ | 19 | 1995 | Martinez Acosta mem-B corr | A07 King's Indian Attack |
| 36. A Bericat vs F Riva |
| ½-½ | 45 | 1995 | Martinez Acosta mem-B corr | B31 Sicilian, Rossolimo Variation |
| 37. G F Benz vs F Riva |
| 1-0 | 33 | 1995 | Martinez Acosta mem-B corr | B33 Sicilian |
| 38. G Govashelishvili vs F Riva |
| ½-½ | 35 | 1996 | corr | E92 King's Indian |
| 39. I Oren vs F Riva |
| 1-0 | 9 | 1998 | olm13 qual GP2 B6 corr | A45 Queen's Pawn Game |
| 40. T Silfver vs F Riva |
| ½-½ | 20 | 2001 | ICCF Jubilee Officials/IM-C email | B33 Sicilian |
| 41. H Sarink vs F Riva |
| ½-½ | 43 | 2001 | ICCF Jubilee Officials/IM-C email | B33 Sicilian |
| 42. F Riva vs W Kover |
| 1-0 | 25 | 2001 | ICCF Jubilee Officials/IM-C email | B92 Sicilian, Najdorf, Opocensky Variation |
| 43. F Riva vs E Knol |
| ½-½ | 32 | 2001 | ICCF Jubilee Officials/IM-C email | B33 Sicilian |
| 44. F Riva vs M Kevicky |
| ½-½ | 28 | 2001 | ICCF Jubilee Officials/IM-C email | C67 Ruy Lopez |
| 45. F Riva vs O Halme |
| ½-½ | 24 | 2001 | ICCF Jubilee Officials/IM-C email | C07 French, Tarrasch |
| 46. F Riva vs J Bohak |
| ½-½ | 30 | 2001 | ICCF Jubilee Officials/IM-C email | C89 Ruy Lopez, Marshall |
| 47. F Riva vs W Bielecki |
| 0-1 | 39 | 2001 | ICCF Jubilee Officials/IM-C email | C78 Ruy Lopez |
| 48. S M Larsen vs F Riva |
| ½-½ | 43 | 2001 | ICCF Jubilee Officials/IM-C email | A03 Bird's Opening |
| 49. H Isigkeit vs F Riva |
| 1-0 | 28 | 2001 | ICCF Jubilee Officials/IM-C email | E92 King's Indian |
| 50. G V Hill vs F Riva |
| ½-½ | 24 | 2001 | ICCF Jubilee Officials/IM-C email | E97 King's Indian |
Kibitzing
