[Event "IBM"]
[Site "Amsterdam"]
[Date "1964.07.22"]
[Round "2"]
[White "Larsen, Bent"]
[Black "Kuijpers, Frans"]
[Result "1-0"]

1. g3 e5 2. Bg2 Nc6 3. c4 g6 4. Nc3 Bg7 5. e3 d6 6. Nge2 Nge7 7. d4 O-O 8. d5 Nb8 9. h4 h5 10. e4 Nd7 11. Bg5 Nf6 12. Qd2 a6 13. a4 Bd7 14. a5 Kh7 15. b4 Nfg8 16. O-O Bh6 17. c5 f6 18. Bxh6 Nxh6 19. Rfb1 Qe8 20. b5 axb5 21. cxd6 cxd6 22. Qb2 Qb8 23. Nxb5 Rc8 24. Nbc3 Rc7 25. a6 Qc8 26. Qb6 Nf7 27. a7 Qd8 28. f4 Nc8 29. Qf2 b6 30. Nb5 Bxb5 31. Rxb5 Rcxa7 32. Rxa7 Rxa7 33. Bh3 Ra1+ 34. Kg2 Ra2 35. Rb3 Qe8 36. Qf3 Nh6 37. Kf1 Ra1+ 38. Kf2 exf4 39. Qxf4 Ra4 40. Qxf6 Ng8 1-0