[Event "Zuerich"]
[Site "Zuerich"]
[Date "1959.06.03"]
[Round "12"]
[White "Keller, Dieter"]
[Black "Nievergelt, Erwin"]
[Result "0-1"]

1. e4 e5 2. Nf3 d6 3. d4 Nd7 4. Bc4 c6 5. O-O Be7 6. Qe2 h6 7. dxe5 dxe5 8. Bb3 Ngf6 9. c3 O-O 10. Nbd2 Qc7 11. Rd1 Nc5 12. Bc2 b6 13. b4 Ba6 14. Nc4 Ncd7 15. Bd3 Bb7 16. Nh4 Rfd8 17. Nf5 Bf8 18. a4 a5 19. Bd2 Ne8 20. f4 axb4 21. cxb4 b5 22. Nxe5 Nxe5 23. fxe5 Qxe5 24. Rac1 Rxa4 25. Bc3 Qe6 26. Nd4 Qe7 27. e5 Nc7 28. Qe4 g6 29. Nxc6 Qe8 30. e6 Nxe6 31. Bxb5 Rxd1+ 32. Rxd1 Ra2 33. Qc4 Qa8 34. Re1 Bg7 35. Rxe6 Bxc3 36. Rxg6+ Bg7 37. Rd6 Bxc6 38. Qxc6 Ra1+ 39. Kf2 Qa2+ 0-1