| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 251. O Yepez Obando vs G Fuster |
| 1-0 | 41 | 1966 | Pan American Championship | A07 King's Indian Attack |
| 252. G Fuster vs S Schweber |
| 1-0 | 41 | 1966 | Pan American Championship | E71 King's Indian, Makagonov System (5.h3) |
| 253. G Martinez Vaca vs G Fuster |
| 1-0 | 40 | 1966 | Pan American Championship | D20 Queen's Gambit Accepted |
| 254. G Fuster vs E Cobo Arteaga |
| 0-1 | 93 | 1966 | Pan American Championship | A48 King's Indian |
| 255. F Roux Cabral vs G Fuster |
| 0-1 | 39 | 1966 | Pan American Championship | D02 Queen's Pawn Game |
| 256. G Fuster vs C Coudari |
| ½-½ | 46 | 1968 | Canadian Open | A31 English, Symmetrical, Benoni Formation |
| 257. G Fuster vs Z Vranesic |
| 0-1 | 29 | 1969 | Canadian Championship | A57 Benko Gambit |
| 258. G Fuster vs Browne |
| 0-1 | 26 | 1970 | Canadian Open | A31 English, Symmetrical, Benoni Formation |
| 259. C Coudari vs G Fuster |
| 0-1 | 21 | 1970 | Canadian Open | A02 Bird's Opening |
| 260. Larsen vs G Fuster |
| 1-0 | 23 | 1970 | Canadian Open | D46 Queen's Gambit Declined Semi-Slav |
| 261. G Fuster vs Csom |
| 0-1 | 36 | 1970 | Siegen Olympiad Final-A | A47 Queen's Indian |
| 262. G Mititelu vs G Fuster |
| 0-1 | 40 | 1970 | Siegen Olympiad Final-A | D20 Queen's Gambit Accepted |
| 263. G Fuster vs Quinteros |
| 0-1 | 29 | 1970 | Siegen Olympiad Final-A | A46 Queen's Pawn Game |
| 264. D Mohrlok vs G Fuster |
| 1-0 | 55 | 1970 | Siegen Olympiad Final-A | D02 Queen's Pawn Game |
| 265. D Allan vs G Fuster |
| 0-1 | 42 | 1971 | Toronto Closed | D04 Queen's Pawn Game |
| 266. J Berry vs G Fuster |
| 1-0 | 36 | 1971 | Toronto Closed | B80 Sicilian, Scheveningen |
| 267. L Day vs G Fuster |
| 1-0 | 28 | 1972 | Toronto Closed | B11 Caro-Kann, Two Knights, 3...Bg4 |
| 268. R Zuk vs G Fuster |
| ½-½ | 19 | 1972 | Canadian Championship | B17 Caro-Kann, Steinitz Variation |
| 269. G Fuster vs L Piasetski |
| 0-1 | 38 | 1972 | Canadian Championship | A32 English, Symmetrical Variation |
| 270. G Fuster vs E Macskasy |
| ½-½ | 57 | 1972 | Canadian Championship | A12 English with b3 |
| 271. G Fuster vs P Biyiasas |
| 0-1 | 72 | 1972 | Canadian Championship | E61 King's Indian |
| 272. C Coudari vs G Fuster |
| ½-½ | 73 | 1972 | Canadian Championship | B23 Sicilian, Closed |
| 273. G Fuster vs B Amos |
| 0-1 | 41 | 1972 | Canadian Championship | E10 Queen's Pawn Game |
| 274. L Day vs G Fuster |
| 1-0 | 46 | 1972 | Canadian Championship | A00 Uncommon Opening |
| 275. G Fuster vs L Witt |
| 0-1 | 48 | 1972 | Canadian Championship | A53 Old Indian |
Kibitzing
