[Event "Olympiad-19 Preliminaries A"]
[Site "Siegen"]
[Date "1970.09.13"]
[Round "9"]
[White "Petersen, Hans"]
[Black "Rodriguez Vargas, Orestes"]
[Result "0-1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 O-O 8. h3 Bb7 9. c3 d5 10. exd5 Nxd5 11. Nxe5 Nxe5 12. Rxe5 Nf4 13. d4 Nxg2 14. Qg4 Nh4 15. d5 Bf6 16. Rh5 Re8 17. Be3 Bc8 18. Qg3 Bf5 19. d6 cxd6 20. Nd2 Bg6 21. Rd5 Nf5 22. Qh2 Nxe3 23. fxe3 Rxe3 24. Rxd6 Qc8 25. Bd5 Be5 0-1