[Event "Zuerich"]
[Site "Zuerich"]
[Date "1959.05.28"]
[Round "8"]
[White "Olafsson, Fridrik"]
[Black "Donner, Jan Hein"]
[Result "1/2-1/2"]

1. c4 Nf6 2. Nc3 g6 3. g3 Bg7 4. d4 d6 5. Nf3 Nc6 6. Bg2 O-O 7. O-O a6 8. Bg5 h6 9. Bd2 e5 10. d5 Ne7 11. e4 Nd7 12. Ne1 f5 13. Nd3 Nf6 14. f3 g5 15. f4 exf4 16. gxf4 fxe4 17. fxg5 exd3 18. gxf6 Rxf6 19. Rxf6 Bxf6 20. Qh5 Bf5 21. Rf1 Bg6 22. Qxh6 Qf8 23. Qf4 Be5 1/2-1/2