[Event "Hoogovens"]
[Site "Wijk aan Zee"]
[Date "1973.01.18"]
[Round "4"]
[White "Andersson, Ulf"]
[Black "Hartoch, Robert G"]
[Result "1/2-1/2"]

1. c4 Nf6 2. Nf3 g6 3. Nc3 d5 4. cxd5 Nxd5 5. Qa4+ Bd7 6. Qc2 Nb6 7. g3 Bg7 8. Bg2 Nc6 9. d3 O-O 10. O-O Nc8 11. Ne4 Nd6 12. Nc5 Be8 13. Bd2 b6 14. Nb3 Rc8 15. Rac1 a5 16. Bc3 Nb4 17. Qb1 c5 18. Bxg7 Kxg7 19. Nbd2 Bc6 20. b3 Nf5 21. a3 Na6 22. e3 f6 23. Rfd1 Qd7 1/2-1/2