[Event "Interzonal-11b"]
[Site "Rio de Janeiro"]
[Date "1979.10.10"]
[Round "13"]
[White "Smejkal, Jan"]
[Black "Sax, Gyula"]
[Result "1/2-1/2"]
[WhiteElo "2550"]
[BlackElo "2590"]

1. Nf3 Nf6 2. c4 g6 3. Nc3 d5 4. d4 Bg7 5. cxd5 Nxd5 6. e4 Nxc3 7. bxc3 c5 8. Be2 Nc6 9. Be3 Bg4 10. e5 cxd4 11. cxd4 O-O 12. O-O Qd7 13. Qd2 Rfd8 14. Rfd1 Rac8 15. Rac1 Be6 16. Ne1 f6 17. Qb2 Bd5 18. Nd3 fxe5 19. Nxe5 Nxe5 20. dxe5 Rxc1 21. Qxc1 e6 22. Bxa7 Ra8 23. Qe3 Qa4 24. Bc5 Qxa2 25. Bf3 Qb3 26. Qxb3 Bxb3 1/2-1/2