[Event "Interzonal-09b"]
[Site "Petropolis"]
[Date "1973.07.30"]
[Round "6"]
[White "Smyslov, Vassily V"]
[Black "Polugaevsky, Lev"]
[Result "1/2-1/2"]

1. c4 Nf6 2. d4 c5 3. d5 g6 4. Nc3 d6 5. e4 Bg7 6. Bd3 O-O 7. Nf3 e6 8. O-O exd5 9. cxd5 Bg4 10. h3 Bxf3 11. Qxf3 Nbd7 12. Qe2 a6 13. a4 Re8 14. Bf4 c4 15. Bc2 Nc5 16. Rfe1 Rc8 17. Qd2 b5 18. axb5 axb5 19. Nxb5 Nfxe4 20. Bxe4 Nxe4 21. Qc2 Qb6 22. Na7 Qxb2 23. Qxb2 Bxb2 24. Nxc8 Bxa1 25. Nxd6 Nxd6 26. Rxa1 Rd8 27. Bg5 Rd7 28. Bf6 Ne8 29. Ra8 Kf8 30. Bc3 f5 1/2-1/2