[Event "Hoogovens"]
[Site "Wijk aan Zee"]
[Date "1969.01.15"]
[Round "2"]
[White "Portisch, Lajos"]
[Black "Olafsson, Fridrik"]
[Result "0-1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 O-O 6. Nf3 d5 7. O-O dxc4 8. Bxc4 Nc6 9. a3 Ba5 10. Qd3 a6 11. Rd1 b5 12. Ba2 Bb6 13. Qc2 c4 14. Ne2 Qc7 15. Ng3 Bb7 16. Bd2 Rad8 17. Rac1 e5 18. dxe5 Nxe5 19. Nxe5 Qxe5 20. Bc3 Qe6 21. Bb1 g6 22. Qe2 h5 23. Bxf6 Qxf6 24. Be4 Bc8 25. Bf3 Qe5 26. Qc2 Rxd1+ 27. Rxd1 Rd8 28. Rxd8+ Bxd8 29. Ne2 Bf5 30. Qd2 Bc7 31. g3 Bd3 32. Nf4 Bf5 33. Nd5 Bd6 34. Qa5 Bf8 35. Qd8 Kg7 36. Nc7 Be7 37. Qb8 Kh6 38. Nxa6 Qxb8 39. Nxb8 Bf6 40. Bc6 Bxb2 41. Bxb5 c3 0-1