| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 51. R Prasca Sosa vs A F Ker |
 | 1-0 | 26 | 2006 | Turin Olympiad | B08 Pirc, Classical |
| 52. Carlsen vs R Prasca Sosa |
 | 1-0 | 33 | 2006 | Turin Olympiad | C11 French |
| 53. R Prasca Sosa vs A Baburin |
| 0-1 | 53 | 2006 | Turin Olympiad | B03 Alekhine's Defense |
| 54. Z Rahman vs R Prasca Sosa |
| 1-0 | 45 | 2006 | Turin Olympiad | D43 Queen's Gambit Declined Semi-Slav |
| 55. R Prasca Sosa vs D Collutiis |
| 1-0 | 53 | 2006 | Turin Olympiad | B46 Sicilian, Taimanov Variation |
| 56. Rozentalis vs R Prasca Sosa |
| 1-0 | 52 | 2006 | Turin Olympiad | C00 French Defense |
| 57. G Needleman vs R Prasca Sosa |
| 1-0 | 41 | 2006 | Mercosur Cup | D02 Queen's Pawn Game |
| 58. R Prasca Sosa vs R Hungaski |
| 1-0 | 35 | 2006 | Mercosur Cup | C45 Scotch Game |
| 59. L Liascovich vs R Prasca Sosa |
| 1-0 | 48 | 2006 | Copa Mercosur | C00 French Defense |
| 60. R Prasca Sosa vs Bachmann |
| ½-½ | 10 | 2006 | Copa Mercosur | C42 Petrov Defense |
| 61. D Izquierdo vs R Prasca Sosa |
| ½-½ | 37 | 2006 | Iberoamericano D | A06 Reti Opening |
| 62. R Prasca Sosa vs Mecking |
| 1-0 | 39 | 2006 | Iberoamericano D | B81 Sicilian, Scheveningen, Keres Attack |
| 63. J A Guillen Ramirez vs R Prasca Sosa |
| 0-1 | 47 | 2006 | Iberoamericano D | D31 Queen's Gambit Declined |
| 64. C S Matamoros Franco vs R Prasca Sosa |
| 1-0 | 31 | 2006 | Iberoamericano D | A15 English |
| 65. R Prasca Sosa vs A Fernandes |
| ½-½ | 66 | 2006 | Iberoamericano D | B01 Scandinavian |
| 66. D Barria vs R Prasca Sosa |
| 1-0 | 42 | 2006 | Iberoamericano sf 4 | D52 Queen's Gambit Declined |
| 67. R Prasca Sosa vs D Barria |
| 1-0 | 102 | 2006 | Iberoamericano sf 4 | B43 Sicilian, Kan, 5.Nc3 |
| 68. O Zambrana vs R Prasca Sosa |
| 1-0 | 36 | 2006 | Iberoamericano f D | C03 French, Tarrasch |
| 69. R Prasca Sosa vs O Zambrana |
| ½-½ | 7 | 2006 | Iberoamericano f D | B88 Sicilian, Fischer-Sozin Attack |
| 70. R Prasca Sosa vs F Cardona |
| 1-0 | 36 | 2007 | Cali Continental Open | B15 Caro-Kann |
| 71. J Alvarez vs R Prasca Sosa |
| 0-1 | 52 | 2007 | Cali Continental Open | C18 French, Winawer |
| 72. R Prasca Sosa vs A Zapata |
| ½-½ | 39 | 2007 | Cali Continental Open | B43 Sicilian, Kan, 5.Nc3 |
| 73. A Fier vs R Prasca Sosa |
| ½-½ | 16 | 2007 | Cali Continental Open | C16 French, Winawer |
| 74. R Prasca Sosa vs D Gurevich |
| ½-½ | 49 | 2007 | Cali Continental Open | B35 Sicilian, Accelerated Fianchetto, Modern Variation with Bc4 |
| 75. F Peralta vs R Prasca Sosa |
| 1-0 | 75 | 2007 | Cali Continental Open | D11 Queen's Gambit Declined Slav |
Kibitzing
