[Event "IBM"]
[Site "Amsterdam"]
[Date "1961.??.??"]
[Round "5"]
[White "Van den Berg, Carel"]
[Black "Bernstein, Ossip Samuel"]
[Result "1-0"]

1. Nf3 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. O-O c5 6. d4 cxd4 7. Qxd4 d6 8. Nc3 Nc6 9. Qh4 Be6 10. Ng5 Bd7 11. Rd1 Rc8 12. Nd5 h5 13. Rb1 Ne5 14. b3 Nxd5 15. Bxd5 Bf5 16. Be4 Bxe4 17. Nxe4 Qa5 18. Qxe7 Qxa2 19. Bb2 Nc6 20. Nf6+ Kh8 21. Qe3 Ne5 22. Nd5 Rfe8 23. Qd2 Qa6 24. f4 Ng4 25. Bxg7+ Kxg7 26. Qd4+ Kh6 27. h3 Rxe2 28. hxg4 hxg4 29. Ra1 Qc6 30. Re1 Qe8 31. Kf1 Re6 32. Kf2 f6 33. Nxf6 Qf7 34. Rxe6 Qxe6 35. Rh1+ 1-0