[Event "Zuerich"]
[Site "Zuerich"]
[Date "1961.05.27"]
[Round "1"]
[White "Larsen, Bent"]
[Black "Keres, Paul"]
[Result "1/2-1/2"]

1. f4 c5 2. Nf3 g6 3. e4 Bg7 4. Be2 Nc6 5. O-O e6 6. d3 Nge7 7. c3 O-O 8. Be3 b6 9. Nbd2 f5 10. Qe1 Ba6 11. Qf2 e5 12. exf5 Nxf5 13. fxe5 Nxe5 14. Nxe5 Bxe5 15. Nf3 Nxe3 16. Qxe3 Bf4 17. Qe4 d5 18. Qa4 Bb7 19. d4 Qd6 20. Ba6 Bc6 21. Bb5 Bxb5 22. Qxb5 Rae8 23. Rae1 Re4 24. dxc5 Qxc5+ 25. Qxc5 bxc5 26. Rd1 Re2 27. Rxd5 Rxb2 28. Re1 Rxa2 29. Rxc5 Rf7 30. Rd5 Rc2 31. Rd3 Bc7 32. h4 h6 33. Nd4 Rb2 34. Ne6 Re7 35. c4 Rc2 36. Re4 Bb6+ 37. Kh2 Rf7 38. c5 Bxc5 39. Nxc5 Rxc5 40. Rd6 Kh7 41. Ree6 Rg7 42. Ra6 Rc4 43. Kh3 h5 44. g3 Rb4 45. Rec6 Kh6 46. Rc8 Rd7 47. Rcc6 Rg4 48. Rc3 Rb7 49. Rca3 Rb1 50. Rxa7 1/2-1/2