[Event "IBM"]
[Site "Amsterdam"]
[Date "1961.??.??"]
[Round "8"]
[White "Van den Berg, Carel"]
[Black "Johner, Hans"]
[Result "0-1"]

1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nc3 d6 6. Nf3 Nbd7 7. O-O c6 8. Qc2 e5 9. Rd1 Qc7 10. b3 Re8 11. e4 a5 12. Ba3 exd4 13. Nxd4 Bf8 14. Rd2 Nc5 15. Rad1 Bd7 16. Bb2 Rad8 17. Nde2 Nh5 18. Bf3 Ng7 19. Nf4 f5 20. Re2 fxe4 21. Bxe4 Bf5 22. Bxf5 Nxf5 23. Rxe8 Rxe8 24. Nh5 Qd8 25. a3 Qg5 26. Nd5 cxd5 27. Nf6+ Kf7 28. Nxe8 Kxe8 29. cxd5 Qg4 30. h3 Qxh3 31. Qe2+ Be7 32. b4 axb4 33. axb4 Nd7 34. Ra1 Nh6 35. Qe6 Qxe6 36. dxe6 Ne5 37. Ra8+ Bd8 38. f4 Neg4 39. b5 Nf5 40. Kg2 h5 41. Rb8 Ke7 42. b6 Nge3+ 43. Kf3 Nd5 44. Rxb7+ Kxe6 0-1