[Event "Hoogovens"]
[Site "Wijk aan Zee"]
[Date "1971.01.12"]
[Round "1"]
[White "Andersson, Ulf"]
[Black "Ree, Hans"]
[Result "1/2-1/2"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bc4 a6 7. Bb3 b5 8. O-O Be7 9. f4 Bb7 10. f5 e5 11. Nde2 Nbd7 12. Bg5 Rc8 13. Bxf6 Nxf6 14. Qd3 Rc5 15. Rad1 O-O 16. h3 a5 17. Kh1 b4 18. Nd5 Nxd5 19. Bxd5 Bxd5 20. exd5 Bh4 21. Qe4 Qe7 22. c4 bxc3 23. Nxc3 Rb8 24. Qe2 Rb4 25. a3 Rd4 26. Rd3 h6 27. Rfd1 Qb7 28. Rxd4 exd4 29. Rxd4 Bf6 30. Re4 Bxc3 31. bxc3 Qxd5 32. f6 gxf6 33. c4 Qf5 34. Rg4+ Kf8 35. Qd2 Ke7 36. Qxh6 Rxc4 37. Qe3+ Kf8 38. Qh6+ Ke7 39. Qe3+ Kf8 40. Qh6+ 1/2-1/2