[Event "USA Annual op-ch69"]
[Site "Aspen"]
[Date "1968.08.??"]
[Round "?"]
[White "Larsen, Bent"]
[Black "Martz, William E"]
[Result "1-0"]

1. f4 Nf6 2. Nf3 g6 3. d3 d5 4. c3 Bg7 5. Qc2 O-O 6. e4 dxe4 7. dxe4 Nc6 8. Na3 e5 9. fxe5 Ng4 10. Bg5 Qe8 11. Nb5 Bxe5 12. O-O-O f6 13. Nxe5 Qxe5 14. Rd5 Qe7 15. Bf4 Nge5 16. Be2 Be6 17. Rd2 Rad8 18. Rhd1 Rxd2 19. Rxd2 Rd8 20. Qa4 a6 21. Rxd8+ Nxd8 22. Nd4 Bf7 23. h4 Ne6 24. Nxe6 Bxe6 25. Kc2 Kg7 26. b3 Bd7 27. Qd4 Bc6 28. g4 Nf7 29. Bd3 Kg8 30. Kb2 Ne5 31. Be2 Nf7 32. Bc4 Bxe4 33. Bxc7 Qxc7 34. Qxe4 Kf8 35. Bd5 Qh2+ 36. Ka3 Nd6 37. Qe6 Nb5+ 38. Kb4 Qf4+ 39. Bc4 Qd6+ 40. Qxd6+ Nxd6 41. Bd3 Ke7 42. Kc5 Kd7 43. a4 Kc7 44. Kd5 Kd7 45. h5 Nc8 46. Kc5 Kc7 47. hxg6 hxg6 48. Bxg6 b6+ 49. Kd4 Kd6 50. b4 Ne7 51. Be4 Kc7 52. Kc4 Kb8 53. a5 Kc7 54. axb6+ Kxb6 55. Kd4 Kb5 56. Bd3+ Kb6 57. Bf1 Ng6 58. Kd5 a5 59. bxa5+ Kxa5 60. Ke6 1-0