[Event "Bled 30th Anniversary"]
[Site "Bled"]
[Date "1961.09.08"]
[Round "4"]
[White "Donner, Jan Hein"]
[Black "Parma, Bruno"]
[Result "1/2-1/2"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Bg5 h6 5. Bh4 c5 6. d5 exd5 7. cxd5 d6 8. e3 O-O 9. Bd3 Nbd7 10. Ne2 Ne5 11. a3 Ba5 12. O-O Ng6 13. Bxg6 fxg6 14. f3 Qe7 15. Bf2 g5 16. h3 h5 17. Qd3 Bd7 18. e4 h4 19. Be3 Nh5 20. Qd2 Bd8 21. b4 b6 22. Rab1 Qe5 23. bxc5 bxc5 24. a4 Nf4 25. Nb5 a6 26. Na3 Bxa4 27. Nc4 Nxe2+ 28. Qxe2 Qe7 29. e5 dxe5 30. Qa2 Bb5 1/2-1/2