[Event "Hoogovens"]
[Site "Wijk aan Zee"]
[Date "1971.01.15"]
[Round "4"]
[White "Van den Berg, Carel"]
[Black "Andersson, Ulf"]
[Result "0-1"]

1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nc3 d6 6. Nf3 Nbd7 7. O-O e5 8. Qc2 Re8 9. Rd1 c6 10. b3 Qa5 11. e4 a6 12. d5 Qc7 13. Ne1 Rb8 14. Bd2 h5 15. a4 h4 16. a5 hxg3 17. hxg3 Ng4 18. Na4 Rf8 19. f3 Ngf6 20. b4 Nh5 21. Kh2 f5 22. c5 cxd5 23. exd5 e4 24. Ra3 Ne5 25. Nb6 Bf6 0-1