[Event "Olympiad-23"]
[Site "Buenos Aires"]
[Date "1978.11.10"]
[Round "14"]
[White "Jamieson, Robert Murray"]
[Black "Donoso Velasco, Pedro H"]
[Result "1/2-1/2"]
[WhiteElo "2420"]
[BlackElo "2405"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O d6 5. d4 Bd7 6. Nc3 Be7 7. dxe5 Nxe5 8. Bxd7+ Qxd7 9. Nxe5 dxe5 10. Qxd7+ Nxd7 11. Nd5 Bd8 12. a4 O-O 13. b3 Re8 14. Ba3 c6 15. Ne3 Nf6 16. f3 Bb6 17. Kf2 Bd4 18. Rac1 Nh5 19. g3 Nf4 20. Rcd1 Ne6 21. Rd3 a5 22. Ke2 g6 23. Ng4 Kg7 24. c3 Bc5 25. Bb2 f6 26. f4 h5 27. Ne3 exf4 28. gxf4 Rad8 29. Rxd8 Rxd8 30. Nc4 b6 31. Bc1 Kf7 32. f5 gxf5 33. Rxf5 Kg6 34. Rf3 Re8 35. e5 f5 36. Rg3+ Kf7 37. Rf3 Kg6 38. Rg3+ Kf7 39. Rf3 1/2-1/2