[Event "Interzonal-04"]
[Site "Portoroz"]
[Date "1958.08.06"]
[Round "2"]
[White "Pachman, Ludek"]
[Black "Olafsson, Fridrik"]
[Result "1/2-1/2"]

1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6 6. Be3 Nf6 7. Qc1 Nd4 8. Nd1 e5 9. c3 Ne6 10. Bh6 O-O 11. Bxg7 Nxg7 12. Ne2 Be6 13. f4 Bg4 14. Qd2 Bxe2 15. Qxe2 exf4 16. gxf4 Nfh5 17. O-O Ne6 18. Qg4 Nf6 19. Qf3 Nh5 20. Qg4 Nf6 1/2-1/2