[Event "World U20-ch03 Final A"]
[Site "Antwerp"]
[Date "1955.07.31"]
[Round "3"]
[White "Portisch, Lajos"]
[Black "Van Oosterom, Joop J"]
[Result "1-0"]

1. d4 c5 2. d5 e5 3. e4 d6 4. Bd3 g6 5. Ne2 Nf6 6. c3 Bg7 7. O-O Qa5 8. Na3 Qc7 9. f4 Nbd7 10. Kh1 O-O 11. Nb5 Qb8 12. c4 a6 13. Nbc3 exf4 14. Bxf4 Ne5 15. Ng3 Nxd3 16. Qxd3 Nd7 17. Nf5 Ne5 18. Qg3 f6 19. Nxg7 Kxg7 20. Qe3 Ng4 21. Qd2 Rf7 22. Na4 b6 23. b4 Bd7 24. Nb2 Ne5 25. Bxe5 dxe5 26. bxc5 bxc5 27. Nd3 Qd6 28. Qa5 Bg4 29. Rf2 Rb7 30. h3 Bc8 31. Raf1 f5 32. Qc3 Re7 33. Re2 fxe4 34. Rxe4 Bf5 35. Rxe5 Rxe5 36. Nxe5 Qf6 37. Qg3 Qd6 38. Rxf5 1-0