[Event "IBM"]
[Site "Amsterdam"]
[Date "1973.??.??"]
[Round "6"]
[White "Langeweg, Kick"]
[Black "Planinc, Albin"]
[Result "0-1"]

1. Nf3 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. d4 O-O 6. Be2 e5 7. O-O Nc6 8. d5 Ne7 9. Ne1 Ne8 10. f3 f5 11. g4 c6 12. Nd3 Bd7 13. Nf2 Rc8 14. Bd2 Kh8 15. Kg2 Ng8 16. g5 Rf7 17. h4 f4 18. Rh1 Bf8 19. Qb3 Ng7 20. c5 dxc5 21. dxc6 Be6 22. Bc4 Rxc6 23. Nd5 Ne7 24. Qxb7 Rd6 25. Qb3 Bxd5 26. Bxd5 Nxd5 27. exd5 Rxd5 28. Ba5 Qa8 29. Ng4 Nf5 30. Rad1 Rfd7 31. Nf6 c4 32. Rxd5 Rxd5 33. Qc3 Rd3 0-1