[Event "IBM"]
[Site "Amsterdam"]
[Date "1962.08.21"]
[Round "6"]
[White "Van den Berg, Carel"]
[Black "Henneberke, Frans"]
[Result "1/2-1/2"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. c3 Bd7 6. d4 g6 7. O-O Bg7 8. dxe5 dxe5 9. Bg5 Nf6 10. Nbd2 Qe7 11. Re1 h6 12. Bh4 Rd8 13. Nf1 Nb8 14. Ne3 c6 15. Nd2 O-O 16. b4 Be6 17. Qc2 g5 18. Bg3 Nh5 19. Bb3 Nxg3 20. hxg3 Rd7 21. Ndf1 Rfd8 22. g4 Qf6 23. Re2 Qf4 24. Rae1 Qf6 25. Ng3 Bf8 26. Ngf5 a5 27. a3 axb4 28. axb4 Na6 29. Bxe6 fxe6 30. Ng3 Nc7 31. Nc4 Bg7 32. Re3 Nb5 33. Rf3 Qe7 34. Kh2 Rf8 35. Rxf8+ Qxf8 36. Nh5 Qd8 37. Re2 Rd3 38. Re3 Rxe3 39. Nxe3 Bh8 40. Nc4 Qd7 41. Na5 Kf7 42. Qe2 b6 43. Nb3 Ke7 44. Qe3 Qd8 45. Ng3 Kd7 46. Ne2 Kc7 1/2-1/2