[Event "Hoogovens"]
[Site "Wijk aan Zee"]
[Date "1968.01.15"]
[Round "5"]
[White "Portisch, Lajos"]
[Black "Gheorghiu, Florin"]
[Result "1/2-1/2"]
1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 O-O 6. Be3 c6 7. Qd2 a6 8. O-O-O b5 9. Bh6 Bxh6 10. Qxh6 Qa5 11. e5 dxe5 12. dxe5 Nfd7 13. h4 Rd8 14. h5 Nf8 15. Rxd8 Qxd8 16. hxg6 fxg6 17. Nge2 Nbd7 18. Qg5 Nc5 19. Ng3 Be6 20. Nge4 b4 21. Nxc5 bxc3 22. b3 Qd4 23. Nd3 Rd8 24. g4 a5 25. Qf4 Qa7 26. Be2 a4 27. b4 a3 28. Kb1 c2+ 29. Kc1 Qa6 30. Nc5 Qb6 31. Kxc2 Qxb4 32. Nb3 1/2-1/2