[Event "Olympiad-26"]
[Site "Thessaloniki"]
[Date "1984.11.19"]
[Round "1"]
[White "De Guzman, Ricardo"]
[Black "Harris, Derek JE"]
[Result "1-0"]
[WhiteElo "2355"]

1. d4 d6 2. c4 g6 3. Nc3 Bg7 4. e4 Nd7 5. Be3 e5 6. d5 Ne7 7. Qd2 f5 8. f3 Nf6 9. O-O-O Bd7 10. Nge2 a6 11. c5 Bb5 12. Kb1 Qd7 13. Nc1 Rf8 14. Nxb5 axb5 15. Qb4 Kf7 16. Bxb5 Qd8 17. cxd6 cxd6 18. Bb6 Qb8 19. g4 fxg4 20. fxg4 Bh6 21. Rhf1 Kg7 22. h3 Nc8 23. Bg1 Na7 24. Be2 Qc7 25. h4 Bf4 26. Nd3 g5 27. Nxf4 gxf4 28. g5 Ng8 29. Bg4 b5 30. Rc1 Qb8 31. Rf3 Nc8 32. b3 Qb7 33. Rfc3 Qa6 34. R1c2 Nce7 35. Rc7 Rfd8 36. Bf2 Kf8 37. h5 h6 38. gxh6 Nxh6 39. Be6 Qa5 40. Qxa5 Rxa5 41. Bh4 Re8 42. Rg2 b4 43. Bf6 Nf7 44. Rg7 1-0