[Event "Olympiad-23"]
[Site "Buenos Aires"]
[Date "1978.10.25"]
[Round "1"]
[White "Portisch, Lajos"]
[Black "Pritchett, Craig William"]
[Result "1-0"]
[WhiteElo "2630"]
[BlackElo "2405"]
1. c4 Nf6 2. Nc3 c5 3. g3 d5 4. cxd5 Nxd5 5. Bg2 e6 6. Nf3 Nc6 7. O-O Be7 8. d4 O-O 9. Nxd5 exd5 10. dxc5 Bxc5 11. a3 a5 12. Ne1 d4 13. Nd3 Be7 14. Bd2 a4 15. b3 axb3 16. Qxb3 Na5 17. Bxa5 Qxa5 18. Bxb7 Bxb7 19. Qxb7 Bxa3 20. Rfb1 Qd8 21. Ne5 Qe7 22. Qd5 Qd6 23. Qxd6 Bxd6 24. Nc6 g6 25. Rxa8 Rxa8 26. Nxd4 h5 27. Rb7 Be5 28. Nf3 Bf6 29. Kg2 Re8 30. e3 Re7 31. Rb5 Kg7 32. Nd2 Re5 33. Rb4 Be7 34. Rb7 Bf6 35. Kf3 Re7 36. Rb3 Re6 37. Ne4 Be7 38. Rb7 Re5 39. Rd7 Re6 40. Nc3 Bf8 41. Ne2 Re7 42. Rd3 Re5 43. Nf4 Re7 44. Rd5 Rc7 45. Nd3 Rc6 46. e4 Ra6 47. Ke3 Kg8 48. h3 Bh6+ 49. f4 Ra3 50. g4 hxg4 51. hxg4 Bg7 52. Rd8+ Kh7 53. g5 Ra1 54. e5 Rg1 55. Nc5 Rg3+ 56. Kf2 Ra3 57. Ne4 Ra2+ 58. Kf3 Ra3+ 59. Kg4 Ra4 60. Nf6+ Bxf6 61. gxf6 Ra6 62. Rf8 Ra7 63. e6 fxe6 64. Re8 Kh6 65. Rh8+ Rh7 66. Rxh7+ Kxh7 67. Kg5 Kh8 68. Kxg6 Kg8 69. f7+ Kf8 70. Kf6 e5 71. Kxe5 Kxf7 72. Kf5 1-0