[Event "World-ch26 Spassky-Petrosian +6-4=13"]
[Site "Moscow"]
[Date "1969.04.25"]
[Round "6"]
[White "Petrosian, Tigran V"]
[Black "Spassky, Boris Vasilievich"]
[Result "1/2-1/2"]

1. c4 e6 2. d4 d5 3. Nc3 Be7 4. Nf3 Nf6 5. Bg5 h6 6. Bh4 O-O 7. Rc1 Ne4 8. Bxe7 Qxe7 9. e3 c6 10. Qc2 Nxc3 11. Qxc3 Nd7 12. a3 dxc4 13. Bxc4 b6 14. O-O Bb7 15. Rfd1 Rfd8 16. Be2 Rac8 17. b4 Rc7 18. Rc2 Ra8 19. Nd2 a5 20. Bf3 Ra7 21. Rb1 axb4 22. axb4 Qf8 23. h3 Qe7 24. Rcc1 Ba6 25. Qb3 Bb5 26. Ne4 Nf6 27. Nxf6+ Qxf6 28. Qb2 Qe7 29. Ra1 Rxa1 30. Rxa1 Ra7 31. Rxa7 Qxa7 32. Be4 Qe7 33. Qa3 g5 34. Qc3 Qd6 35. Bf3 Kf8 36. e4 Kg7 37. e5 Qe7 38. Be4 Qd8 39. Qa1 Qe7 40. Qa3 Qd8 41. Qa1 Qe7 42. Qc3 Qa7 43. Kh2 Qa2 44. Qf3 Qd2 45. Qf6+ Kg8 46. Qd8+ Kg7 47. Qf6+ Kg8 1/2-1/2