[Event "Birmingham U20"]
[Site "Birmingham"]
[Date "1950.04.14"]
[Round "11"]
[White "Olafsson, Fridrik"]
[Black "Oosterhuis, H."]
[Result "1-0"]
[ECO "C25"]
[PlyCount "40"]
[EventDate "1950.04.03"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "ENG"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. e4 e5 2. Nc3 Nc6 3. f4 exf4 4. Nf3 h6 5. d4 g5 6. d5 Nb8 7. Qd4 f6 8. h4 Rh7 9. hxg5 fxg5 10. e5 Qe7 11. d6 cxd6 12. Qc4 Nc6 13. Qxg8 dxe5 14. Nd5 Qf7 15. Nc7+ Kd8 16. Qxf7 Rxf7 17. Nxa8 b6 18. Bc4 Re7 19. Nxg5 hxg5 20. Rh8 d6 1-0

[Event "Birmingham U20"]
[Site "Birmingham"]
[Date "1950.04.06"]
[Round "?"]
[White "Sieben, Ivan"]
[Black "Oosterhuis, H."]
[Result "1-0"]
[ECO "C14"]
[PlyCount "59"]
[EventDate "1950.04.03"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "ENG"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Be7 5. e5 Nfd7 6. h4 a6 7. Qd2 h6 8. Bxe7 Qxe7 9. f4 c5 10. Nf3 Nc6 11. dxc5 Qxc5 12. 0-0-0 Ne7 13. g4 b5 14. a3 Bb7 15. Ne4 Qc7 16. Nd6+ Kf8 17. Nd4 Nb6 18. f5 exf5 19. N4xf5 Nxf5 20. gxf5 Rd8 21. Qb4 Kg8 22. Rg1 Rh7 23. Bd3 Nc4 24. Nxb7 Qxb7 25. Bxc4 Qc7 26. Bxd5 Qxe5 27. Bxf7+ Kxf7 28. Qb3+ Ke7 29. Rge1 Rxd1+ 30. Kxd1 1-0

