[Event "IBM"]
[Site "Amsterdam"]
[Date "1973.??.??"]
[Round "4"]
[White "Marovic, Drazen"]
[Black "Planinc, Albin"]
[Result "0-1"]

1. c4 Nf6 2. d4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. Nf3 g6 7. g3 Bg7 8. Bg2 O-O 9. O-O Na6 10. h3 Bd7 11. e4 Qc8 12. Kh2 Re8 13. Re1 c4 14. e5 dxe5 15. Nxe5 Bf5 16. Bg5 Nb4 17. Rc1 Nd7 18. Nxd7 Qxd7 19. Rxe8+ Rxe8 20. Qd2 Nd3 21. Rd1 b5 22. g4 b4 23. Ne2 Be4 24. Bxe4 Rxe4 25. f3 Re8 26. b3 Qxd5 27. bxc4 Qxf3 28. Ng1 Be5+ 0-1