[Event "Interzonal-09b"]
[Site "Petropolis"]
[Date "1973.08.07"]
[Round "11"]
[White "Keres, Paul"]
[Black "Hug, Werner"]
[Result "1-0"]

1. c4 Nf6 2. Nc3 c5 3. Nf3 Nc6 4. d4 cxd4 5. Nxd4 g6 6. e4 Nxd4 7. Qxd4 d6 8. Be2 Bg7 9.
Bd2 O-O 10. Qe3 Be6 11. O-O Qb6 12. b3 Qxe3 13. Bxe3 Rfc8 14. Rac1 a6 15. f3 Nd7 16. f4 f5
17. exf5 gxf5 18. Bf3 Rc7 19. Rfe1 Nf8 20. Bb6 Rc6 21. Bf2 Kf7 22. Bxc6 bxc6 23. c5 Nd7
24. cxd6 exd6 25. Red1 Bxc3 26. Rxc3 Bd5 27. Rh3 Nf8 28. Rh5 Ke6 29. Rh6+ Ng6 30. h4 Kf7
31. Rxh7+ Kg8 32. Rh5 Rf8 33. Rd3 Rf6 34. Rg3 c5 35. Rxf5 Rxf5 36. Rxg6+ Kf7 37. Rxd6 c4
38. g4 Ke7 39. Bc5 1-0