| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 151. C Saavedra vs R Prasca Sosa |
| 0-1 | 36 | 2013 | American Continental 9th | C01 French, Exchange |
| 152. R Prasca Sosa vs A Aguilar |
| 1-0 | 29 | 2013 | American Continental 9th | B58 Sicilian |
| 153. R Prasca Sosa vs D Flores |
| 0-1 | 39 | 2013 | American Continental 9th | C48 Four Knights |
| 154. M Latorre vs R Prasca Sosa |
| ½-½ | 44 | 2013 | American Continental 9th | C16 French, Winawer |
| 155. R Campero vs R Prasca Sosa |
| 0-1 | 30 | 2013 | American Continental 9th | A13 English |
| 156. R Prasca Sosa vs Lenderman |
| ½-½ | 37 | 2013 | American Continental 9th | B12 Caro-Kann Defense |
| 157. D E Cori Tello vs R Prasca Sosa |
| 1-0 | 50 | 2013 | American Continental 9th | A09 Reti Opening |
| 158. R Prasca Sosa vs C Gutierrez |
| 1-0 | 34 | 2013 | American Continental 9th | C03 French, Tarrasch |
| 159. R Prasca Sosa vs S Ivanov |
| 0-1 | 54 | 2013 | Barbera del Valles op | B12 Caro-Kann Defense |
| 160. R Prasca Sosa vs M Narciso Dublan |
| 1-0 | 45 | 2013 | 39th Badalona Open A | B06 Robatsch |
| 161. O Perez Mitjans vs R Prasca Sosa |
| 1-0 | 24 | 2013 | 39th Badalona Open A | C17 French, Winawer, Advance |
| 162. R Prasca Sosa vs E Fabrega |
| 1-0 | 58 | 2013 | Panama Open | C48 Four Knights |
| 163. A Rakhmanov vs R Prasca Sosa |
| 1-0 | 36 | 2013 | Panama Open | A14 English |
| 164. J E Hatem Osorio vs R Prasca Sosa |
| 0-1 | 44 | 2013 | Panama Open | B47 Sicilian, Taimanov (Bastrikov) Variation |
| 165. R Prasca Sosa vs J Obregon Rivero |
| 0-1 | 32 | 2013 | Panama Open | B57 Sicilian |
| 166. F Bonilla vs R Prasca Sosa |
| 0-1 | 61 | 2013 | Panama Open | D10 Queen's Gambit Declined Slav |
| 167. R Prasca Sosa vs J Carvajal Gorgona |
| 1-0 | 30 | 2013 | Panama Open | C10 French |
| 168. A Alvarez Pedraza vs R Prasca Sosa |
| 1-0 | 31 | 2013 | Panama Open | B48 Sicilian, Taimanov Variation |
| 169. R Prasca Sosa vs R J Brizuela Abreu |
| ½-½ | 34 | 2013 | Panama Open | C11 French |
| 170. F Peralta vs R Prasca Sosa |
| 1-0 | 44 | 2017 | 12th American Continental | D36 Queen's Gambit Declined, Exchange, Positional line, 6.Qc2 |
| 171. K Mekhitarian vs R Prasca Sosa |
| ½-½ | 59 | 2017 | 12th American Continental | B48 Sicilian, Taimanov Variation |
| 172. R Prasca Sosa vs S Erenburg |
| 0-1 | 35 | 2017 | 12th American Continental | B18 Caro-Kann, Classical |
| 173. R Prasca Sosa vs Kaidanov |
| ½-½ | 38 | 2017 | 12th American Continental | C77 Ruy Lopez |
| 174. D Vera Siguenas vs R Prasca Sosa |
| 1-0 | 35 | 2017 | 12th American Continental | B47 Sicilian, Taimanov (Bastrikov) Variation |
Kibitzing
