[Event "Petropolis Interzonal"]
[Site "Petropolis BRA"]
[Date "1973.08.16"]
[EventDate "1973.07.23"]
[Round "16"]
[Result "1/2-1/2"]
[White "Lajos Portisch"]
[Black "David Bronstein"]
[ECO "D14"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "24"]

1. d4 d5 2. c4 c6 3. cxd5 cxd5 4. Nc3 Nf6 5. Nf3 Nc6 6. Bf4
Bf5 7. e3 e6 8. Bd3 Bxd3 9. Qxd3 Bd6 10. Bxd6 Qxd6 11. O-O O-O
12. Rac1 Rac8 1/2-1/2