[Event "IBM"]
[Site "Amsterdam"]
[Date "1962.08.17"]
[Round "4"]
[White "Hartoch, Robert G"]
[Black "Henneberke, Frans"]
[Result "1-0"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 d6 7. c3 Bd7 8. d3 O-O 9. Nbd2 Kh8 10. Nf1 Ng8 11. Ng3 g6 12. d4 Bf6 13. Be3 Qe7 14. h3 Bg7 15. Bc2 Rfe8 16. Qd2 Rad8 17. Rad1 Qf8 18. b3 Bc8 19. Nh2 f6 20. f4 Bh6 21. Rf1 Qg7 22. Rde1 Rf8 23. Re2 Nge7 24. Ref2 exf4 25. Bxf4 Bxf4 26. Qxf4 a5 27. Ng4 Ng8 28. Ne3 b5 29. Ne2 Nce7 30. Bd3 c6 31. d5 b4 32. dxc6 Nxc6 33. Nd5 Be6 34. Bb5 Bxd5 35. exd5 Na7 36. Bc4 Rfe8 37. cxb4 axb4 38. Nd4 Qb7 39. Qh4 Rd7 40. Ne6 Rf7 41. Qg3 Nc8 42. Qd3 Qb6 43. Kh2 Ra7 44. Qd2 h6 45. h4 h5 46. Rxf6 Nxf6 47. Rxf6 Rg8 48. Qh6+ Rh7 49. Rxg6 Qf2 50. Rxg8+ Kxg8 51. Qg5+ Kf7 52. Bd3 Ne7 53. Bxh7 Nxd5 54. Bf5 Ne7 55. Qxh5+ Kf6 56. Qh8+ 1-0