[Event "Interzonal-10a"]
[Site "Biel"]
[Date "1976.07.17"]
[Round "6"]
[White "Csom, Istvan"]
[Black "Castro Rojas, Oscar Humberto"]
[Result "1-0"]
[WhiteElo "2490"]
[BlackElo "2380"]

1. e4 Nc6 2. Nf3 e5 3. Be2 Nf6 4. d3 d5 5. Nbd2 Be7 6. c3 a5 7. O-O O-O 8. Re1 Re8 9. Qc2 Bc5 10. Bf1 Ba7 11. b3 Qd6 12. Re2 Bd7 13. Bb2 Rad8 14. a3 Bg4 15. h3 Be6 16. b4 Nh5 17. b5 Nb8 18. exd5 Bxd5 19. c4 Bxf3 20. Nxf3 Nd7 21. Rae1 Nf4 22. Rd2 Qg6 23. Kh1 Qh5 24. Qd1 f6 25. d4 exd4 26. Bxd4 Rxe1 27. Qxe1 Re8 28. Qd1 Nc5 29. Be3 Nfe6 30. g4 Qg6 31. Bg2 Bb6 32. Nh4 Qf7 33. Nf5 Kh8 34. Bd5 g6 35. Nd4 Qe7 36. Re2 Qd7 37. Qe1 Nd3 38. Qc3 Ndf4 39. Nxe6 Nxd5 40. cxd5 Qe7 41. Bxb6 cxb6 42. Re3 1-0