[Event "Interzonal-11b"]
[Site "Rio de Janeiro"]
[Date "1979.10.12"]
[Round "15"]
[White "Shamkovich, Leonid Alexandrovic"]
[Black "Balashov, Yuri S"]
[Result "1/2-1/2"]
[WhiteElo "2495"]
[BlackElo "2600"]

1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6 6. Rb1 a5 7. a3 Nf6 8. e3 O-O 9. Nge2 Ne7 10. O-O d5 11. cxd5 Nexd5 12. e4 Ne7 13. h3 Nc6 14. Be3 Nd4 15. f4 Nd7 16. f5 Nb6 17. g4 c5 18. b3 Bd7 19. a4 Bc6 20. Rb2 Re8 21. Nc1 gxf5 22. gxf5 Qh4 23. Qg4 Qxg4 24. hxg4 f6 25. Kf2 Kf7 26. Rh1 Rh8 27. Bf3 h5 28. g5 fxg5 29. Bxh5+ Ke7 30. Bxg5+ Bf6 31. Bxf6+ Kxf6 32. Kf1 Rh6 33. Rh3 Rah8 34. Rbh2 Be8 35. Bg4 Rxh3 36. Rxh3 Rxh3 37. Bxh3 Bf7 38. Nb5 Nxb5 39. axb5 Nc8 40. Bg4 b6 41. Ke1 Nd6 42. Bd1 Nxb5 43. Ne2 1/2-1/2