[Event "IBM"]
[Site "Amsterdam"]
[Date "1975.??.??"]
[Round "4"]
[White "Ljubojevic, Ljubomir"]
[Black "Smejkal, Jan"]
[Result "1/2-1/2"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 O-O 8. a4 Bb7 9. d3 d6 10. Bd2 b4 11. c3 d5 12. exd5 Nxd5 13. Nxe5 Nxe5 14. Rxe5 Bf6 15. Re1 c5 16. a5 Qd6 17. d4 cxd4 18. cxb4 Nxb4 19. Qg4 Nd3 20. Re2 Nc5 21. Bf4 Qc6 22. Bd1 Nd3 23. Rc2 h5 24. Rxc6 hxg4 25. Rb6 Bxg2 26. Bd6 Bh3 27. Ba4 Rfd8 28. Nd2 Nxb2 29. Bc6 Rac8 30. Ba3 Nd3 31. Rxa6 Ne5 32. Be4 Bg5 33. Bb4 Bxd2 34. Bxd2 Nf3+ 35. Bxf3 gxf3 36. Rb6 Bf5 37. a6 Be4 38. a7 f6 39. h4 Kh7 40. Kh2 Kg6 41. Kg3 1/2-1/2