| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 276. J Gerschman vs R Grau |
| 0-1 | 38 | 1940 | Buenos Aires | D37 Queen's Gambit Declined |
| 277. R Grau vs F Benko |
| 1-0 | 31 | 1940 | Buenos Aires | E47 Nimzo-Indian, 4.e3 O-O 5.Bd3 |
| 278. R Grau vs M Luckis |
| 0-1 | 60 | 1940 | Buenos Aires | E41 Nimzo-Indian |
| 279. R Grau vs L Palau |
| 1-0 | 65 | 1940 | Buenos Aires | D02 Queen's Pawn Game |
| 280. R Grau vs F Sulik |
| 1-0 | 42 | 1940 | Buenos Aires | E61 King's Indian |
| 281. C Guimard vs R Grau |
| 0-1 | 42 | 1940 | Buenos Aires | D19 Queen's Gambit Declined Slav, Dutch |
| 282. I Raud vs R Grau |
| 0-1 | 62 | 1940 | Buenos Aires | D02 Queen's Pawn Game |
| 283. R Bensadon vs R Grau |
| 1-0 | 35 | 1940 | Buenos Aires | A47 Queen's Indian |
| 284. R Flores Alvarez vs R Grau |
| ½-½ | 24 | 1940 | Santiago | D40 Queen's Gambit Declined, Semi-Tarrasch |
| 285. R Grau vs Letelier |
| 1-0 | 35 | 1940 | Santiago | E60 King's Indian Defense |
| 286. R Grau vs J Salas Romo |
| 1-0 | 60 | 1940 | Santiago | E20 Nimzo-Indian |
| 287. C Guimard vs R Grau |
| 1-0 | 19 | 1940 | Santiago | D33 Queen's Gambit Declined, Tarrasch |
Kibitzing
