[Event "Olympiad-23"]
[Site "Buenos Aires"]
[Date "1978.11.08"]
[Round "13"]
[White "Clua Ballague, Miguel"]
[Black "Yerbury, Paul"]
[Result "0-1"]

1. d4 d5 2. c4 e6 3. Nf3 c5 4. e3 Nf6 5. Bd3 cxd4 6. exd4 dxc4 7. Bxc4 Nc6 8. O-O Be7 9. Nc3 O-O 10. h3 b6 11. Be3 Bb7 12. Rc1 Rc8 13. Qe2 Nb4 14. Ne5 Nbd5 15. Bd3 Nb4 16. Bc4 Nbd5 17. Rfd1 Nxc3 18. Rxc3 Rc7 19. Rcc1 Nd5 20. Bd3 Bf6 21. Bb1 Nxe3 22. fxe3 Rxc1 23. Rxc1 Bxe5 24. dxe5 Qd5 25. Rc7 g6 26. Qf1 a5 27. Kh1 Ba8 28. e4 Qxe5 29. Qc4 Qxb2 30. Bd3 Qa1+ 31. Bf1 Bxe4 32. Qxe4 Qxf1+ 33. Kh2 Rd8 34. Qe3 Qd3 35. Qxb6 Qd6+ 36. Qxd6 Rxd6 37. Rc5 Rd5 38. Rc8+ Kg7 39. Ra8 g5 40. Ra7 Kg6 41. Ra6 h5 42. h4 Re5 43. hxg5 Kxg5 44. Ra8 Kf4 45. Rf8 Rf5 46. Rc8 e5 47. Rc5 e4 48. g3+ Kg5 49. Rc4 Re5 0-1