[Event "Olympiad-19 Preliminaries A"]
[Site "Siegen"]
[Date "1970.09.05"]
[Round "1"]
[White "Rodriguez Vargas, Orestes"]
[Black "Kostro, Jerzy"]
[Result "0-1"]

1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. Nf3 e6 5. e3 Nbd7 6. Bd3 dxc4 7. Bxc4 b5 8. Bd3 b4 9. Na4 c5 10. dxc5 Bxc5 11. Nxc5 Nxc5 12. Bb5+ Bd7 13. Bc4 Qb6 14. Qc2 O-O 15. O-O Rfd8 16. Bd2 Nfe4 17. Rfd1 Ba4 18. b3 Nxd2 19. Rxd2 Rxd2 20. Qxd2 Rd8 21. Qc2 Bc6 22. Ng5 g6 23. h4 Bb7 24. h5 Qd6 25. Qb2 Qe7 26. Nh3 e5 27. hxg6 hxg6 28. a3 Ne4 29. axb4 Rd2 30. Qc1 Qd8 31. Qe1 Bc8 32. Be2 Bxh3 33. gxh3 Qg5+ 34. Kh2 Qh4 35. Kg2 Rb2 36. Qf1 Rxb3 37. Kg1 Rxb4 38. Bf3 a5 39. Qg2 Ng5 40. Bg4 a4 41. Kf1 0-1