| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 251. J Mangini vs F G Pimentel |
| 0-1 | 57 | 1967 | Brazilian Championship | C90 Ruy Lopez, Closed |
| 252. P Segundo da Costa vs J Mangini |
| 0-1 | 30 | 1967 | Brazilian Championship | D45 Queen's Gambit Declined Semi-Slav |
| 253. J Mangini vs S Ribeiro |
| 1-0 | 40 | 1967 | Brazilian Championship | B32 Sicilian |
| 254. J Mangini vs A S Segal |
| ½-½ | 18 | 1980 | Brazilian Championship | B02 Alekhine's Defense |
| 255. M Netto Baeta vs J Mangini |
| 1-0 | 47 | 1980 | Brazilian Championship | E98 King's Indian, Orthodox, Taimanov, 9.Ne1 |
| 256. J Mangini vs C Braga |
 | ½-½ | 55 | 1980 | Brazilian Championship | C00 French Defense |
| 257. S Cunha Pereira vs J Mangini |
| 1-0 | 75 | 1980 | Brazilian Championship | B72 Sicilian, Dragon |
Kibitzing
