[Event "Interzonal-10a"]
[Site "Biel"]
[Date "1976.07.21"]
[Round "8"]
[White "Smyslov, Vassily V"]
[Black "Castro Rojas, Oscar Humberto"]
[Result "1-0"]
[WhiteElo "2580"]
[BlackElo "2380"]

1. Nf3 Nf6 2. b3 g6 3. Bb2 Bg7 4. g3 b6 5. Bg2 Bb7 6. O-O c5 7. c4 O-O 8. Nc3 d5 9. Nxd5 Nxd5 10. Bxg7 Kxg7 11. cxd5 Qxd5 12. d4 cxd4 13. Qxd4+ Qxd4 14. Nxd4 Bxg2 15. Kxg2 Na6 16. Rfd1 Rfc8 17. Rac1 Kf6 18. Nb5 Nc5 19. b4 Ne6 20. Rxc8 Rxc8 21. Nxa7 Rc2 22. a4 Rxe2 23. Nc8 b5 24. axb5 Rb2 25. Nb6 Nc7 26. Nd7+ Kg7 27. b6 Na6 28. Nc5 Nxb4 29. b7 Nc6 30. Rd7 Na5 31. Rxe7 1-0