[Event "Costa del Sol-12"]
[Site "Malaga"]
[Date "1972.02.07"]
[Round "5"]
[White "Durao, Joaquim Manuel"]
[Black "Martz, William E"]
[Result "0-1"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. c4 Nb6 5. f4 Bf5 6. Nc3 dxe5 7. fxe5 e6 8. Nf3 Bb4 9. Qb3 c5 10. dxc5 Bxc5 11. Bg5 f6 12. exf6 gxf6 13. Qb5+ N8d7 14. Bh4 Qe7 15. a3 a5 16. Na4 Nxa4 17. Qxa4 O-O 18. Qb3 Ra6 19. Qc3 e5 20. Be2 a4 21. Bf2 Bxf2+ 22. Kxf2 Nc5 23. Qb4 Qc7 24. Rad1 Rb6 25. Qa5 Rc8 26. Nh4 Bd3 27. Rhe1 Rxb2 28. Qxc7 Rxc7 29. Ke3 Bxe2 30. Rxe2 Rb3+ 31. Kf2 Nd3+ 32. Kg1 Rxc4 33. Nf5 Rc1 34. Rxc1 Nxc1 35. Rc2 Rc3 36. Rxc3 Ne2+ 37. Kf2 Nxc3 38. Nd6 b5 39. Ke3 Nd5+ 40. Kd2 b4 41. axb4 a3 42. Kc1 Nxb4 43. Nc4 a2 44. Kb2 Kf7 45. Nd2 Ke6 46. Nb3 Nd3+ 47. Kxa2 Ne1 48. g4 Nf3 49. Nc5+ Ke7 50. h3 Ng5 51. h4 Nf3 52. h5 Nh2 53. g5 fxg5 54. Ne4 Nf3 55. Kb3 Ke6 0-1