[Event "Interzonal-10b"]
[Site "Manila"]
[Date "1976.06.18"]
[Round "5"]
[White "Mariotti, Sergio"]
[Black "Biyiasas, Peter"]
[Result "1-0"]
[WhiteElo "2470"]
[BlackElo "2460"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f4 O-O 6. Nf3 c5 7. d5 e6 8. Be2 exd5 9. cxd5 Re8 10. e5 dxe5 11. fxe5 Ng4 12. Bg5 Qb6 13. O-O Nxe5 14. Qd2 Bf5 15. Nxe5 Bxe5 16. Rxf5 gxf5 17. Rf1 Nd7 18. Rxf5 c4+ 19. Kh1 Qg6 20. Rf3 Rac8 21. Bf4 Bxf4 22. Qxf4 Kf8 23. h4 h6 24. a4 Re7 25. Rg3 Qf6 26. Qg4 Qg6 27. Qxg6 fxg6 28. Rxg6 Ne5 29. Rxh6 Kg7 30. Rh5 Nd3 31. Rg5+ Kf8 32. Bg4 Rd8 33. Be6 Rg7 34. Rf5+ Ke7 35. Kh2 Nxb2 36. Rf4 Kd6 37. g4 Kc5 38. g5 Nd3 39. Re4 a6 40. d6 Nb2 41. d7 b5 42. axb5 axb5 43. Bf5 b4 44. Re5+ Kd4 45. Re8 Rgxd7 46. Ne2+ Kc5 47. Bxd7 Rxd7 48. g6 b3 49. h5 Na4 50. Rc8+ Kb4 51. Rb8+ Ka3 52. h6 Rd2 53. g7 Rxe2+ 54. Kg3 b2 55. g8=Q Re3+ 56. Kh2 Rb3 57. Qf8+ Ka2 58. Ra8 b1=Q 59. Rxa4+ Kb2 60. Qf2+ Kc3 61. Qf6+ Kd2 62. Qd4+ Rd3 63. Qf2+ Kc3 64. Ra3+ Kb4 65. Qb6+ Kxa3 66. Qxb1 Rd2+ 67. Kg3 1-0