[Event "Zuerich"]
[Site "Zuerich"]
[Date "1961.06.01"]
[Round "5"]
[White "Larsen, Bent"]
[Black "Kupper, Josef"]
[Result "1-0"]

1. c4 c5 2. Nc3 g6 3. g3 Bg7 4. Bg2 Nc6 5. Nf3 a6 6. O-O Rb8 7. e3 d6 8. Qe2 Nh6 9. h3 O-O 10. d3 b5 11. e4 Nd4 12. Nxd4 cxd4 13. Nd5 bxc4 14. dxc4 a5 15. Rb1 Re8 16. Qd3 e6 17. Nf4 Ba6 18. Bd2 d5 19. exd5 e5 20. Ne2 f5 21. Rfc1 Qe7 22. Bxa5 e4 23. Qd2 Qa7 24. b4 e3 25. fxe3 Rxe3 26. Kh2 g5 27. b5 Rbe8 28. Ng1 Bc8 29. c5 Be5 30. Nf3 Re2 31. Qxg5+ Bg7 32. Bd2 Qxa2 33. Re1 Qxd5 34. Qh5 Nf7 35. c6 d3 36. Kh1 Nd6 37. Rg1 Qa2 38. b6 Rxg2 39. Kxg2 Re2+ 40. Kh1 Ne4 41. Rbf1 Qd5 42. b7 Bxb7 43. cxb7 Qxb7 44. Qe8+ Bf8 45. Qe6+ Kg7 46. Qxf5 Bd6 47. Bc3+ Kg8 48. Qg4+ Kf8 49. Bg7+ Qxg7 50. Nd4+ 1-0