[Event "IBM"]
[Site "Amsterdam"]
[Date "1973.??.??"]
[Round "15"]
[White "Smejkal, Jan"]
[Black "Langeweg, Kick"]
[Result "1-0"]

1. Nf3 Nf6 2. g3 d5 3. Bg2 c6 4. O-O Bf5 5. d3 e6 6. b3 Be7 7. Bb2 O-O 8. Nbd2 a5 9. a3 h6 10. c4 Nbd7 11. Qc2 Bh7 12. Bc3 Qb8 13. Qb2 Bd6 14. e4 e5 15. exd5 Bxd3 16. Rfe1 Re8 17. dxc6 bxc6 18. b4 axb4 19. axb4 Rxa1 20. Rxa1 Bh7 21. c5 Bc7 22. Nc4 Bd3 23. Ne3 Be4 24. Re1 Qb7 25. Ng4 Nxg4 26. Rxe4 Ngf6 27. Re1 Qb8 28. Bh3 Qb5 29. Rd1 Re7 30. Nh4 g6 31. Qc1 Kh7 32. Bd2 Ng8 33. Bf1 Qa4 34. Bc4 Ndf6 35. Be1 e4 36. Bc3 Kg7 37. Rd2 Qa8 38. Ra2 Qe8 39. Qa1 Be5 40. Bxe5 Rxe5 1-0