[Event "IBM"]
[Site "Amsterdam"]
[Date "1973.??.??"]
[Round "9"]
[White "Enklaar, Bert F"]
[Black "Smejkal, Jan"]
[Result "1/2-1/2"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. f4 Qc7 7. Bd3 e5 8. Nf3 b5 9. O-O Nbd7 10. Qe1 Bb7 11. Kh1 g6 12. a4 b4 13. Nd1 Nc5 14. Nf2 Nxd3 15. cxd3 a5 16. d4 Bg7 17. fxe5 dxe5 18. dxe5 Nd7 19. Bf4 O-O 20. Rc1 Qb6 21. Rd1 Nc5 22. Rd6 Qc7 23. Qe3 Ne6 24. Rc1 Qe7 25. Bg3 Rfc8 26. Rcd1 Qe8 27. Ng4 Qxa4 28. Nf6+ Bxf6 29. exf6 Rd8 30. Rxd8+ Rxd8 31. Rxd8+ Nxd8 32. h4 Ne6 33. Kh2 Qc6 34. Nd2 a4 35. Qd3 h5 36. Bd6 Qd7 37. Qg3 b3 38. Qe5 Qc6 39. Bb4 Kh7 40. Bc3 Qc7 1/2-1/2