[Event "Interzonal-10a"]
[Site "Biel"]
[Date "1976.07.20"]
[Round "7"]
[White "Castro Rojas, Oscar Humberto"]
[Black "Geller, Efim P"]
[Result "1-0"]
[WhiteElo "2380"]
[BlackElo "2620"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. O-O Bg7 5. Re1 e5 6. c3 Nge7 7. d4 cxd4 8. cxd4 exd4 9. Bf4 a6 10. Bf1 d6 11. Nbd2 O-O 12. h3 h6 13. Nc4 d5 14. exd5 Nxd5 15. Bd6 Re8 16. Rxe8+ Qxe8 17. Bc5 Be6 18. Nxd4 Rd8 19. Nxe6 Qxe6 20. Qb3 b5 21. Rd1 bxc4 22. Bxc4 Na5 23. Qb6 Qxb6 24. Bxb6 Nxc4 25. Bxd8 Nf4 26. b3 Ne5 27. Rd6 Ne6 28. Ba5 Nc5 29. b4 Ne4 30. Rxa6 Nd3 31. Kf1 Bd4 32. Ra8+ Kg7 33. Rd8 1-0