[Event "Hoogovens"]
[Site "Beverwijk"]
[Date "1964.01.14"]
[Round "6"]
[White "Larsen, Bent"]
[Black "De Rooi, Paul"]
[Result "1-0"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. h3 c5 6. d5 e6 7. Bd3 exd5 8. exd5 O-O 9. Nge2 Re8 10. O-O Nfd7 11. f4 f5 12. Bd2 Nf6 13. Qc2 Na6 14. a3 Nc7 15. Rab1 Kh8 16. Be1 Ne4 17. b4 cxb4 18. axb4 b6 19. Bxe4 fxe4 20. Nd1 b5 21. Bc3 Qe7 22. Ne3 bxc4 23. Bxg7+ Qxg7 24. Qxc4 a6 25. Nd4 Nb5 26. Nxb5 axb5 27. Qc6 Bb7 28. Qxd6 Red8 29. Qc5 Bxd5 30. Qxb5 Qd4 31. Rfe1 Ra3 32. Rbd1 Rd3 33. Qc5 Bb3 34. Rc1 Rb8 35. Kh2 Qf6 36. Rf1 Qd4 37. Ng4 Be6 38. Qc7 Ra8 39. Qe7 Bxg4 40. hxg4 Qd7 41. Qe5+ Qg7 42. Qxe4 Rdd8 43. b5 Rab8 1-0