[Event "Interzonal-03"]
[Site "Gothenburg"]
[Date "1955.08.23"]
[Round "6"]
[White "Donner, Jan Hein"]
[Black "Pachman, Ludek"]
[Result "1/2-1/2"]

1. Nf3 c5 2. e4 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nde2 b5 8. Bg2 Bb7 9. h3 Be7 10. O-O Nbd7 11. Nd5 Nxd5 12. exd5 O-O 13. f4 Rc8 14. fxe5 Nxe5 15. b3 Bg5 16. Kh2 Bxc1 17. Qxc1 Rc5 18. Qd2 Nd7 19. a4 Qc7 20. Rfc1 bxa4 21. Rxa4 Nf6 22. c4 Re8 23. Raa1 Nd7 24. Nd4 Ne5 25. Nf3 Nxf3+ 26. Bxf3 a5 27. Re1 Rxe1 28. Rxe1 Qd8 29. Qe3 Kf8 30. Qc3 Bc8 31. Ra1 Bf5 32. h4 h6 33. Kg2 Kg8 34. Ra2 Kf8 35. Ra1 Kg8 36. Ra2 Kf8 37. Qc1 Qb6 38. Qe3 Qd8 39. Qc3 Kg8 40. Ra1 Kf8 41. Ra2 Kg8 1/2-1/2