[Event "Piatigorsky-Cup 2nd"]
[Site "Santa Monica"]
[Date "1966.07.19"]
[Round "2"]
[White "Larsen, Bent"]
[Black "Donner, Jan Hein"]
[Result "1/2-1/2"]

1. e4 c5 2. Nf3 d6 3. Nc3 Nc6 4. d4 cxd4 5. Nxd4 Nf6 6. Bg5 e6 7. Qd2 a6 8. O-O-O Bd7 9. f4 h6 10. Bh4 Nxe4 11. Qe1 Nf6 12. Nf5 Qa5 13. Nxd6+ Bxd6 14. Rxd6 O-O-O 15. Rd2 Ne7 16. Qe5 Qxe5 17. fxe5 Nf5 18. Bxf6 gxf6 19. exf6 Bc6 20. Bd3 Rhg8 21. Ne4 Ne3 22. g3 Bxe4 23. Bxe4 Rxd2 24. Kxd2 Ng4 25. Bd3 Kd7 26. a4 a5 27. b4 axb4 28. Rb1 Nxh2 29. Rxb4 Kc7 30. a5 Nf3+ 31. Ke2 Ne5 32. Be4 Nc6 33. Rc4 Ra8 34. Bxc6 bxc6 35. Ra4 h5 36. Kf3 Rg8 37. Rb4 Ra8 38. Ra4 Rg8 39. a6 Kb6 40. a7 Ra8 41. Kf4 Rxa7 42. Rxa7 Kxa7 43. Ke5 Kb6 44. Kd6 Kb5 45. Ke7 e5 46. Kxf7 e4 47. Kg6 e3 48. f7 e2 49. f8=Q e1=Q 50. Qb8+ Ka6 51. Kxh5 Qh1+ 52. Kg6 Qe4+ 53. Kf6 Qxc2 54. g4 Qf2+ 55. Kg6 c5 56. g5 c4 57. Qc8+ Kb5 58. Qf5+ 1/2-1/2