[Event "Interzonal-04"]
[Site "Portoroz"]
[Date "1958.08.08"]
[Round "3"]
[White "Petrosian, Tigran V"]
[Black "Szabo, Laszlo"]
[Result "1/2-1/2"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. Nc3 Bb7 5. a3 d5 6. cxd5 Nxd5 7. e3 Be7 8. Bb5+ c6 9. Bd3 Nd7 10. O-O c5 11. e4 Nxc3 12. bxc3 O-O 13. Bf4 Nf6 14. Qe2 Rc8 15. a4 cxd4 16. cxd4 Rc3 17. Rfe1 Qa8 18. Bg5 h6 19. Bh4 Re8 20. Ne5 Qd8 21. Rad1 Rf8 1/2-1/2