[Event "Las Palmas-05"]
[Site "Las Palmas"]
[Date "1976.??.??"]
[Round "9"]
[White "Sigurjonsson, Gudmundur"]
[Black "Portisch, Lajos"]
[Result "0-1"]
[WhiteElo "2530"]
[BlackElo "2625"]

1. e4 c5 2. Nf3 e6 3. Nc3 a6 4. g3 b5 5. Bg2 Bb7 6. d3 d6 7. O-O Be7 8. a4 b4 9. Nb1 Nd7 10. Nbd2 Ngf6 11. Re1 O-O 12. Nc4 a5 13. Bg5 Ra6 14. e5 Ne8 15. Bxe7 Qxe7 16. exd6 Nxd6 17. Nfd2 Bxg2 18. Kxg2 Nb6 19. Nxd6 Qxd6 20. Qf3 Qd7 21. Re5 Qd4 22. Rd1 Nxa4 23. Qb7 Rfa8 24. Qb5 Nxb2 25. Rxc5 Qd8 26. Nc4 Nxc4 27. Qxc4 h6 28. h4 Rd6 29. Ra1 Rd4 30. Qb3 Qb6 31. Rc4 Rxc4 32. dxc4 Qd4 33. Ra2 Qe4+ 34. Qf3 f5 35. Qxe4 fxe4 36. Kf1 Kf7 37. Ke2 Kf6 38. Ke3 Ke5 39. c5 Kd5 40. c6 Kxc6 0-1