| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 226. J Mangini vs Averbakh |
| 0-1 | 51 | 1965 | Rio IV Centenario | B60 Sicilian, Richter-Rauzer |
| 227. T Vasconcellos vs J Mangini |
| ½-½ | 34 | 1965 | Rio IV Centenario | D52 Queen's Gambit Declined |
| 228. J Mangini vs A C Rocha |
| ½-½ | 35 | 1965 | Rio IV Centenario | B28 Sicilian, O'Kelly Variation |
| 229. E Asfora vs J Mangini |
| ½-½ | 43 | 1965 | BRA-ch+ | D92 Grunfeld, 5.Bf4 |
| 230. J Mangini vs J J Lemos |
| ½-½ | 16 | 1965 | BRA-ch+ | C05 French, Tarrasch |
| 231. J Mangini vs H Camara |
| ½-½ | 61 | 1966 | Brazilian Championship | C84 Ruy Lopez, Closed |
| 232. G W Fonrobert vs J Mangini |
| ½-½ | 57 | 1966 | Brazilian Championship | E46 Nimzo-Indian |
| 233. J Mangini vs J Pinto Paiva |
| ½-½ | 67 | 1966 | Brazilian Championship | C78 Ruy Lopez |
| 234. A Teofilo vs J Mangini |
| ½-½ | 16 | 1966 | Brazilian Championship | B74 Sicilian, Dragon, Classical |
| 235. J Mangini vs J de Souza Mendes |
| ½-½ | 79 | 1966 | Brazilian Championship | B06 Robatsch |
| 236. E Asfora vs J Mangini |
| 0-1 | 75 | 1966 | Brazilian Championship | E20 Nimzo-Indian |
| 237. J Mangini vs F G Pimentel |
| ½-½ | 41 | 1966 | Brazilian Championship | C91 Ruy Lopez, Closed |
| 238. E Cotta vs J Mangini |
| ½-½ | 23 | 1966 | Brazilian Championship | B94 Sicilian, Najdorf |
| 239. J Mangini vs P H Mori |
| 1-0 | 38 | 1966 | Brazilian Championship | C00 French Defense |
| 240. M Miranda vs J Mangini |
| 1-0 | 40 | 1966 | Brazilian Championship | E97 King's Indian |
| 241. J Mangini vs L R Borges |
| 1-0 | 60 | 1966 | Brazilian Championship | C04 French, Tarrasch, Guimard Main line |
| 242. H Caspary vs J Mangini |
| 1-0 | 70 | 1966 | Brazilian Championship | E12 Queen's Indian |
| 243. J Mangini vs C Duarte |
| 1-0 | 23 | 1966 | Brazilian Championship | B01 Scandinavian |
| 244. V Adamowski vs J Mangini |
| 0-1 | 40 | 1966 | Brazilian Championship | B54 Sicilian |
| 245. J Mangini vs A da Nobrega |
| 1-0 | 32 | 1967 | Brazilian Championship | B57 Sicilian |
| 246. G W Fonrobert vs J Mangini |
| ½-½ | 34 | 1967 | Brazilian Championship | A28 English |
| 247. J Mangini vs O Gadia |
| 0-1 | 31 | 1967 | Brazilian Championship | B94 Sicilian, Najdorf |
| 248. A C Rocha vs J Mangini |
| 1-0 | 57 | 1967 | Brazilian Championship | D16 Queen's Gambit Declined Slav |
| 249. J Mangini vs J de Souza Mendes |
| ½-½ | 37 | 1967 | Brazilian Championship | B58 Sicilian |
| 250. J F de Saboya vs J Mangini |
| 0-1 | 55 | 1967 | Brazilian Championship | D30 Queen's Gambit Declined |
Kibitzing
