[Event "Olympiad-23"]
[Site "Buenos Aires"]
[Date "1978.11.10"]
[Round "14"]
[White "Palacios, Ruben"]
[Black "Powell, John"]
[Result "0-1"]

1. d4 Nf6 2. Nc3 d5 3. Bg5 Nbd7 4. f3 h6 5. Bh4 g5 6. Bg3 c6 7. e4 Bg7 8. e5 Nh5 9. Bd3 Nxg3 10. hxg3 Nf8 11. Nge2 Ne6 12. f4 Qb6 13. Qd2 gxf4 14. Na4 Qc7 15. gxf4 b5 16. Nac3 Bd7 17. b4 a5 18. bxa5 Qxa5 19. a4 b4 20. Na2 Rb8 21. O-O c5 22. f5 Nxd4 23. Nxd4 cxd4 24. Qf4 Qb6 25. Rab1 Bxa4 26. f6 Bf8 27. fxe7 Bxe7 28. Qxf7+ Kd8 29. Qxd5+ Bd7 30. Bf5 Qc6 31. Qxd7+ Qxd7 32. Bxd7 Kxd7 33. Nc1 Ke6 34. Nd3 Rhc8 35. Rb2 Rc3 36. Rf2 b3 37. Nf4+ Kxe5 38. Ng6+ Kd6 39. cxb3 Rbxb3 40. Rbd2 Rd3 41. Nxe7 Kxe7 42. Kf1 Rb1+ 43. Ke2 Re3# 0-1