[Event "Interzonal-11b"]
[Site "Rio de Janeiro"]
[Date "1979.09.23"]
[Round "1"]
[White "Petrosian, Tigran V"]
[Black "Smejkal, Jan"]
[Result "1/2-1/2"]
[WhiteElo "2610"]
[BlackElo "2550"]

1. Nf3 Nf6 2. c4 c5 3. Nc3 d5 4. cxd5 Nxd5 5. d4 Nxc3 6. bxc3 g6 7. e3 Bg7 8. Bb5+ Bd7 9. a4 Qa5 10. Qb3 cxd4 11. exd4 O-O 12. O-O Be6 13. Qa3 a6 14. Be2 Nc6 15. Be3 Bd5 1/2-1/2