[Event "Olympiad-17 Preliminaries A"]
[Site "Havana"]
[Date "1966.10.29"]
[Round "4"]
[White "Walther, Edgar"]
[Black "Sin, Kuen"]
[Result "1-0"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O d6 6. c3 Bg4 7. h3 Bh5 8. Qe2 Be7 9. d3 h6 10. Nbd2 b5 11. Bc2 Qd7 12. a4 b4 13. a5 O-O 14. Ba4 Rab8 15. d4 exd4 16. Qxa6 bxc3 17. Bxc6 Qd8 18. bxc3 dxc3 19. Nb1 Bxf3 20. gxf3 c2 21. Na3 Nd7 22. f4 Nc5 23. Qc4 Nb3 24. Nxc2 Nxa1 25. Nxa1 Rb1 26. Be3 Qb8 27. Nc2 Rxf1+ 28. Kxf1 g5 29. f5 Qb1+ 30. Ke2 Qh1 31. a6 Qxh3 32. a7 Qg4+ 33. Kd2 h5 34. a8=Q Rxa8 35. Bxa8 c5 36. Bd5 h4 37. Bxf7+ 1-0