[Event "Reggio Emilia-01 1958/59"]
[Site "Reggio Emilia"]
[Date "1958.12.30"]
[Round "4"]
[White "Primavera, Giuseppe"]
[Black "Marthaler, Otto"]
[Result "0-1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 O-O 6. Be3 c6 7. Qd2 Re8 8. Bd3 Na6 9. Nge2 c5 10. d5 Nc7 11. O-O a6 12. a4 Rb8 13. e5 Nd7 14. exd6 exd6 15. Bg5 f6 16. Bh6 Ne5 17. Bxg7 Kxg7 18. Ng3 b5 19. axb5 axb5 20. cxb5 c4 21. Bc2 Nxb5 22. Nxb5 Rxb5 23. Ba4 Qb6+ 24. Qf2 Qxf2+ 25. Rxf2 Ra5 26. Rff1 Re7 27. Bc2 Rxd5 28. Ne4 f5 29. Nc3 Rd2 30. Rf2 Rxf2 31. Kxf2 Be6 32. Nb5 Rb7 33. Nd4 Bf7 34. Rb1 Rb6 35. Ke3 Kf6 36. h3 h6 37. f4 Nc6 38. Nxc6 Rxc6 39. Kd4 Rc7 40. g4 Be6 41. Rg1 Rb7 42. Kc3 d5 43. b4 cxb3 44. gxf5 bxc2 0-1