[Event "Olympiad-19 Preliminaries A"]
[Site "Siegen"]
[Date "1970.09.09"]
[Round "5"]
[White "Olsen, Henry"]
[Black "Barriera, F"]
[Result "1-0"]

1. Nf3 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. O-O d6 6. Nc3 Nbd7 7. d3 a6 8. Bd2 c5 9. Qc2 Rb8 10. a4 Ne8 11. Ne1 Ne5 12. Qc1 Nc6 13. Bh6 Bd7 14. Bxg7 Kxg7 15. Nd5 e6 16. Ne3 Nf6 17. N3c2 d5 18. f4 Qe7 19. e4 dxe4 20. dxe4 e5 21. f5 Na5 22. Ne3 Nb3 23. Qc3 Nxa1 24. Nf3 Rbe8 25. Rxa1 b6 26. g4 Kh8 27. g5 Ng8 28. Ng4 Qd6 29. Nfxe5 Rxe5 30. Nxe5 Qd4+ 31. Qxd4 cxd4 32. Nxd7 1-0