[Event "Zuerich"]
[Site "Zuerich"]
[Date "1961.06.08"]
[Round "9"]
[White "Walther, Edgar"]
[Black "Petrosian, Tigran V"]
[Result "0-1"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. c4 Nf6 5. Nc3 g6 6. Qb3 Bg7 7. cxd5 O-O 8. Nge2 Na6 9.
g3 Qb6 10. Qxb6 axb6 11. Bg2 Nb4 12. O-O Rd8 13. Bg5 Nbxd5 14. Nxd5 Nxd5 15. Rfe1 h6 16.
Bd2 Be6 17. a3 Rd7 18. Rac1 Rad8 19. h3 g5 20. g4 Rd6 21. Be3 b5 22. Be4 b4 23. Rc5 b6 24.
Rb5 bxa3 25. bxa3 Nc7 26. Rb4 Bd5 27. Bd3 Bf3 28. Ng3 Rc6 29. Be2 Bxe2 30. Rxe2 Nd5 31.
Rb3 e6 32. Reb2 Ra8 33. Rd2 Rc1+ 34. Kg2 Ra1 35. Rdd3 Bf8 36. h4 f6 37. hxg5 hxg5 38. Ne4
R1xa3 39. Rxa3 Rxa3 40. Rxa3 Bxa3 41. Kf3 Kf7 42. Ke2 Ke7 43. Kd3 Kd7 44. Ng3 Kc6 45. Kc4
b5+ 46. Kd3 Be7 47. Ne4 f5 48. gxf5 exf5 49. Nc3 Nxc3 50. Kxc3 g4 0-1