[Event "WchT Students 04th"]
[Site "Reykjavik"]
[Date "1957.07.15"]
[Round "5(2)"]
[White "Bertholdt, Dieter"]
[Black "Portisch, Lajos"]
[Result "0-1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 O-O 6. Nf3 d5 7. O-O dxc4 8. Bxc4 Nbd7 9. Qe2 cxd4 10. exd4 b6 11. Bg5 Bb7 12. Rac1 Rc8 13. Bd3 h6 14. Bf4 Nh5 15. Bg3 Nxg3 16. hxg3 Nf6 17. Rfd1 Bxc3 18. bxc3 Qd6 19. Ba6 Bxa6 20. Qxa6 Rc7 21. Qa4 Qd7 22. Qb3 b5 23. Ne5 Qd5 24. c4 bxc4 25. Rxc4 Rxc4 26. Qxc4 Rb8 27. Kf1 Rb2 28. Qxd5 Nxd5 29. a3 Nc3 30. Re1 Ra2 31. Nc4 Nb5 32. Rd1 Kf8 33. Rd3 Ke7 34. g4 Rc2 35. Ne3 Rc3 36. Rxc3 Nxc3 37. Ke1 Kd6 38. Nc2 Kd5 39. Nb4+ Kd6 40. Nc2 Kd5 41. Nb4+ Kxd4 42. Nc6+ Kd5 43. Nxa7 Kc5 44. f3 Kb6 45. Kd2 Nb1+ 46. Kc2 Nxa3+ 47. Kb3 Kxa7 48. Kxa3 Kb6 49. Kb4 Kc6 50. Kc4 Kd6 51. Kd4 e5+ 52. Ke4 Ke6 53. f4 f6 54. g3 Kd6 55. Ke3 Kd5 56. fxe5 fxe5 0-1