[Event "Olympiad-17 Preliminaries A"]
[Site "Havana"]
[Date "1966.11.03"]
[Round "7"]
[White "Casa, Alex"]
[Black "Ko, Chi"]
[Result "1/2-1/2"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 Be7 7. Re1 O-O 8. c3 d6 9. h3 h6 10. d4 Nh7 11. Bd5 Bb7 12. dxe5 dxe5 13. Nxe5 Nxe5 14. Bxb7 Rb8 15. Bd5 c6 16. Bb3 Qxd1 17. Rxd1 Rbd8 18. Kf1 Rxd1+ 19. Bxd1 Nd3 20. Na3 Bxa3 21. bxa3 Nxc1 22. Rxc1 Rd8 23. Ke2 Nf6 24. Ke3 Nd7 25. f4 Nb6 26. Be2 Kf8 27. c4 bxc4 28. Bxc4 Nxc4+ 29. Rxc4 Rc8 30. Ra4 Rb8 31. Rb4 Rc8 32. Rb7 c5 33. Kd3 Rd8+ 34. Ke3 c4 35. e5 Rd3+ 36. Ke4 Rxa3 37. Rb2 Ra4 38. Rc2 c3+ 39. Ke3 Ke7 40. g4 Rc4 41. f5 a5 42. Kd3 Ra4 43. Rxc3 Rxa2 44. Rc7+ Kf8 45. Ra7 Ra3+ 46. Ke4 Ra1 47. Ra8+ Ke7 48. Ra7+ Kf8 49. Kf4 a4 50. Kg3 Re1 51. f6 gxf6 52. exf6 Kg8 53. Rxa4 Kh7 54. Rf4 Kg6 55. h4 Re3+ 56. Kg2 Re6 57. h5+ Kg5 58. Kf3 Re5 59. Kg3 Ra5 60. Rf3 Rb5 1/2-1/2