[Event "Piatigorsky-Cup 2nd"]
[Site "Santa Monica"]
[Date "1966.08.08"]
[Round "14"]
[White "Petrosian, Tigran V"]
[Black "Donner, Jan Hein"]
[Result "1-0"]

1. Nf3 d5 2. g3 g6 3. Bg2 Bg7 4. O-O e5 5. d3 Ne7 6. Nbd2 O-O 7. e4 c5 8. exd5 Nxd5 9. Nb3
Nd7 10. Re1 Rb8 11. Nfd2 Nc7 12. Na5 Ne6 13. Nac4 Qc7 14. Ne4 Nb6 15. Nc3 Bd7 16. a4 Bc6
17. Nb5 Bxb5 18. axb5 Nxc4 19. dxc4 b6 20. c3 Rfe8 21. Ra6 Re7 22. Qa4 Rc8 23. Bd5 Qb8 24.
Bxe6 fxe6 25. Qd1 Rd8 26. Qg4 Ree8 27. h4 Rd7 28. h5 gxh5 29. Qxh5 Rf8 30. Qg4 Rf6 31. Be3
Rg6 32. Qe4 Bf8 33. Raa1 Bd6 34. Red1 Rgg7 35. Rd2 Bf8 36. Rxd7 Rxd7 37. Qg4+ Kf7 38. Qh3
Kf6 39. Rf1 Qe8 40. Qh4+ Kg7 41. Bh6+ Kg8 42. Bxf8 Kxf8 43. Re1 Qf7 44. Rxe5 Qg6 45. Kg2
Qf7 46. Re4 Ke8 47. Rf4 Qe7 48. Qh5+ Kd8 49. Qe5 Kc8 50. Qe4 Kb8 51. Rh4 Qf7 52. Rf4 Qe7
53. Qf3 Qd6 54. Rf8+ Rd8 55. Rf6 1-0