[Event "Reykjavik International-04"]
[Site "Reykjavik"]
[Date "1970.01.20"]
[Round "6"]
[White "Sigurjonsson, Bjorn"]
[Black "Sigurjonsson, Gudmundur"]
[Result "0-1"]

1. e4 g6 2. d4 d6 3. c4 Nf6 4. Nc3 Bg7 5. Nge2 Nbd7 6. Ng3 e5 7. d5 a5 8. Be2 Nc5 9. Bg5 Qe7 10. O-O h6 11. Be3 O-O 12. Rc1 Kh7 13. a3 Na6 14. h3 Bd7 15. Re1 Ng8 16. Bg4 f5 17. exf5 gxf5 18. Qc2 e4 19. Bxf5+ Bxf5 20. Ncxe4 Qf7 21. c5 Qg6 22. c6 bxc6 23. dxc6 Be6 24. h4 Nf6 25. Bd4 Nxe4 26. Qxe4 Bxd4 27. Nf5 Qxf5 28. Qxd4 Nc5 29. Rc3 Rg8 30. b4 axb4 31. axb4 Rg4 32. Qe3 Re4 33. Qd2 Rxb4 34. Rf3 Qg4 35. Qc2+ Re4 36. Rfe3 Bd5 37. Qc1 Qxh4 38. Rxe4 Bxe4 39. Qe3 Kg6 40. f3 Bxc6 41. Qc3 Qg5 42. Rd1 Qf6 0-1