[Event "Zuerich"]
[Site "Zuerich"]
[Date "1959.06.02"]
[Round "11"]
[White "Donner, Jan Hein"]
[Black "Barcza, Gedeon"]
[Result "1/2-1/2"]

1. d4 Nf6 2. c4 d6 3. Nc3 c6 4. g3 e5 5. Nf3 e4 6. Ng5 d5 7. cxd5 cxd5 8. f4 Nc6 9. Nh3 Bb4 10. Nf2 O-O 11. e3 Bxc3+ 12. bxc3 Na5 13. Be2 Qc7 14. Qc2 Bd7 15. a4 Rfc8 16. Bd2 Nc4 17. Bc1 Qa5 18. O-O b5 19. Nd1 bxa4 20. Bxc4 Rxc4 21. Bd2 Qc7 22. Nb2 Rb4 23. Rfc1 Rb7 24. c4 dxc4 25. Nxa4 Rab8 26. Ra2 Bxa4 27. Rxa4 Rb2 28. Qxc4 Qd7 29. Ra2 h5 30. Rxb2 Rxb2 31. Rc2 Rxc2 32. Qxc2 Qg4 33. d5 Qd7 34. Bc3 Qxd5 35. Bd4 a5 36. h3 Kh7 37. Kg2 Ne8 38. g4 Nd6 39. Kf2 Nb5 40. Ba1 f6 41. Kg3 Na3 42. Qc7 Nb5 43. Qxa5 Qd3 44. Qe1 Na3 45. Bd4 Nc2 46. Qa5 1/2-1/2