[Event "IBM"]
[Site "Amsterdam"]
[Date "1961.??.??"]
[Round "6"]
[White "Enevoldsen, Jens"]
[Black "De Rooi, Paul"]
[Result "1-0"]

1. Nf3 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. O-O d6 6. d4 c6 7. Nc3 Nbd7 8. e4 e5 9. Be3 Re8 10. dxe5 dxe5 11. Qc2 Qc7 12. h3 Nf8 13. Rfd1 Be6 14. Qa4 N6d7 15. b3 f5 16. Qa3 f4 17. Bc1 fxg3 18. fxg3 Bf7 19. Be3 Ne6 20. Qd6 Qxd6 21. Rxd6 Red8 22. Rad1 Nb6 23. c5 Rxd6 24. Rxd6 Nc8 25. Rd7 Rb8 26. Bf1 Be8 27. Rd1 Kf8 28. Bc4 Nc7 29. Ng5 h6 30. Rf1+ Ke7 31. Nf7 Ne6 32. Nxh6 b5 33. Be2 Rb7 34. Bg4 Rd7 35. Ng8+ 1-0