[Event "Olympiad-19 Preliminaries A"]
[Site "Siegen"]
[Date "1970.09.08"]
[Round "4"]
[White "Schmidt, Wlodzimierz"]
[Black "Hamilton, Douglas Gibson"]
[Result "1-0"]

1. Nf3 Nf6 2. c4 g6 3. d4 Bg7 4. Nc3 O-O 5. Bg5 h6 6. Bh4 c5 7. e3 d6 8. Be2 a6 9. O-O g5 10. Bg3 Nh5 11. d5 Nxg3 12. hxg3 Nd7 13. a4 Nf6 14. Nd2 Qd7 15. a5 Qc7 16. g4 b6 17. axb6 Qxb6 18. Rb1 Bd7 19. Nce4 Nxe4 20. Nxe4 Rfb8 21. b3 a5 22. Bd3 Qa6 23. f4 gxf4 24. Qf3 Be5 25. g5 Qc8 26. Qh5 Bg4 27. Qxh6 Bg7 28. Nf6+ exf6 29. Qh7+ Kf8 30. gxf6 Bxf6 31. Rxf4 Ke7 32. Rxf6 Qg8 33. Qh4 Kd7 34. Rbf1 Rf8 35. Qg3 Ra6 36. Bg6 Be2 37. Rxf7+ Rxf7 38. Rxf7+ Kd8 39. Qg5+ 1-0