[Event "Olympiad-23"]
[Site "Buenos Aires"]
[Date "1978.10.25"]
[Round "1"]
[White "Upton, Timothy J"]
[Black "Vadasz, Laszlo"]
[Result "0-1"]
[BlackElo "2505"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. f4 Bg7 5. Nf3 O-O 6. Be2 Na6 7. O-O c5 8. e5 Nd7 9. Bxa6 cxd4 10. Qxd4 bxa6 11. Qe4 Rb8 12. e6 f5 13. Qe1 Nc5 14. Ng5 h6 15. Nf7 Qb6 16. Be3 Bxe6 17. Na4 Qc6 18. Nxc5 Bxf7 19. Nb3 Qxc2 20. Bxa7 Rb7 21. Rf2 Qe4 22. Qxe4 fxe4 23. Bd4 Bxb3 24. Bxg7 Kxg7 25. axb3 Rxb3 26. Rxa6 e3 27. Rf3 e2 28. Kf2 Rxf3+ 29. gxf3 Rxf4 30. Kxe2 Rb4 31. Ra2 Rh4 32. Ke3 Rxh2 33. Ra7 Kf6 34. b4 Rb2 35. Rb7 h5 36. Rb8 h4 37. b5 h3 38. Rh8 h2 39. b6 Ke5 40. Rh7 e6 41. b7 Rb3+ 0-1