[Event "Interzonal-09a"]
[Site "Leningrad"]
[Date "1973.06.04"]
[Round "2"]
[White "Karpov, Anatoly"]
[Black "Huebner, Robert"]
[Result "1/2-1/2"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Nf6 6. O-O Qc7 7. Qe2 d6 8. c4 g6 9. Nc3 Bg7 10. Be3 O-O 11. Rac1 Nc6 12. Nxc6 bxc6 13. f4 c5 14. Rfd1 Bb7 15. a3 Bc6 16. b4 cxb4 17. axb4 Qb7 18. e5 dxe5 19. fxe5 Nd7 20. b5 axb5 21. cxb5 Bd5 22. Bd4 Qb8 23. Re1 Bb7 24. b6 Rd8 25. Bb5 Ra5 26. Qe3 Qa8 27. Qf2 Ba6 28. Rb1 Bxb5 29. Rxb5 Rxb5 30. Nxb5 Qa5 31. Nd6 Nxe5 32. Bxe5 Rxd6 33. Bxg7 Kxg7 34. Rb1 Rd8 35. Qb2+ Kg8 36. b7 Rb8 37. Qc2 Kg7 38. Qc8 Qa2 39. Qc3+ Kg8 40. Ra1 Qd5 41. Qc8+ 1/2-1/2