[Event "Weidenau National"]
[Site "Weidenau"]
[Date "1950.02.10"]
[Round "8"]
[White "Greis, Heinz"]
[Black "Petri, Heinrich"]
[Result "1-0"]
[ECO "B41"]
[PlyCount "57"]
[EventDate "1950.02.03"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 d6 5. c4 Nf6 6. Nc3 a6 7. Be2 Be7 8. 0-0 Nbd7 9. f4 Qc7 10. Kh1 b6 11. b3 Bb7 12. Bf3 Rc8 13. Bb2 Nf8 14. Qe1 N6d7 15. Qg3 Bf6 16. Rad1 Ng6 17. f5 Be5 18. Qe1 exf5 19. exf5 Ne7 20. Bxb7 Qxb7 21. Nf3 0-0 22. Nxe5 dxe5 23. Ne4 Rc6 24. Ba3 Nc5 25. Nd6 Qc7 26. Qxe5 Nc8 27. Bb2 Ne6 28. fxe6 f6 29. e7 1-0

[Event "Weidenau National"]
[Site "Weidenau"]
[Date "1950.02.03"]
[Round "1"]
[White "Lange, Wilfried"]
[Black "Petri, Heinrich"]
[Result "1-0"]
[ECO "B29"]
[PlyCount "69"]
[EventDate "1950.02.03"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. Nf3 c5 2. g3 g6 3. Bg2 Bg7 4. e4 Nf6 5. Nc3 d5 6. exd5 Nxd5 7. 0-0 0-0 8. Re1 Nc6 9. Nxd5 Qxd5 10. Ne5 Qd6 11. Nxc6 bxc6 12. Qf3 Bd7 13. d3 f5 14. c3 e5 15. b3 Rae8 16. Ba3 Rf7 17. Re2 Bh6 18. Rc2 Bf8 19. Rd1 Qf6 20. Qe2 h5 21. f3 c4 22. Bxf8 cxd3 23. Qxd3 Kxf8 24. Rcd2 Bc8 25. Qe3 Kg7 26. Qc5 Rc7 27. Rd6 Qe7 28. b4 Bd7 29. f4 Kh7 30. fxe5 Be6 31. Bxc6 Bf7 32. e6 Bxe6 33. Re1 Qf6 34. Qe5 Qxe5 35. Rxe5 1-0

