[Event "Interzonal-05"]
[Site "Stockholm"]
[Date "1962.01.31"]
[Round "4"]
[White "Olafsson, Fridrik"]
[Black "Filip, Miroslav"]
[Result "1/2-1/2"]

1. c4 c5 2. Nc3 g6 3. g3 Bg7 4. Bg2 Nc6 5. e3 e6 6. Nge2 Nge7 7. O-O O-O 8. b3 d5 9. Bb2 b6 10. cxd5 exd5 11. Nf4 d4 12. Ncd5 Bb7 13. Rb1 Rb8 14. d3 Nxd5 15. Nxd5 Ne5 16. exd4 Bxd5 17. dxe5 Bxg2 18. Kxg2 Bxe5 19. Bxe5 Qd5+ 20. Qf3 Qxe5 1/2-1/2