[Event "Hoogovens"]
[Site "Beverwijk"]
[Date "1964.01.14"]
[Round "6"]
[White "Van Scheltinga, Theo D"]
[Black "Portisch, Lajos"]
[Result "0-1"]
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 c5 5. e3 O-O 6. Bd2 cxd4 7. exd4 d5 8. c5 b6 9. a3 Bxc3 10. Bxc3 Ne4 11. Rc1 e5 12. dxe5 bxc5 13. Bd3 Bf5 14. O-O Nd7 15. Bb5 Rb8 16. Bxd7 Qxd7 17. Nh4 Be6 18. Be1 c4 19. f3 Nc5 20. Bb4 Nd3 21. Bxf8 Rxf8 22. f4 Nxc1 23. Qxc1 f5 24. Nf3 d4 25. b3 cxb3 26. Rd1 d3 27. Qc3 Rc8 0-1