[Event "IBM"]
[Site "Amsterdam"]
[Date "1973.??.??"]
[Round "12"]
[White "Andersson, Ulf"]
[Black "Spassky, Boris Vasilievich"]
[Result "1/2-1/2"]

1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. O-O e5 5. d3 f6 6. c4 d4 7. e3 Be6 8. exd4 cxd4 9. Re1 Bd6 10. Nbd2 Nge7 11. a3 a5 12. Ne4 O-O 13. Bd2 a4 14. b4 axb3 15. Qxb3 Ra7 16. Nxd6 Qxd6 17. Bb4 Nxb4 18. Qxb4 Qd7 19. Reb1 Nc6 20. Qc5 Rc8 21. Nd2 Rc7 22. Ne4 Ra5 23. Qd6 h6 24. Qxd7 Bxd7 25. Nd6 Nd8 26. Nxb7 Nxb7 27. Bxb7 Kf8 28. Bd5 Ke7 29. f4 exf4 30. gxf4 Rca7 31. Rb3 Kd6 32. Kf2 Ba4 33. Rb2 Bd7 34. Rb3 Ba4 35. Rb8 Bd7 1/2-1/2