[Event "BZM-ch U15/17"]
[Site "Osterode"]
[Date "1997.??.??"]
[Round "?"]
[White "Lehn, Stefan"]
[Black "Bleckmann, Florian"]
[Result "1-0"]
[ECO "D31"]
[PlyCount "111"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 c6 4. Nf3 dxc4 5. a4 Bb4 6. Qc2 b5 7. Bd2 Nf6 8. e3 Bb7 9. axb5 Bxc3 10. Bxc3 cxb5 11. Nd2 0-0 12. b3 cxb3 13. Qxb3 a6 14. Qb1 Nd5 15. Bb2 Nd7 16. Nf3 f5 17. Ba3 Re8 18. Bd6 N7f6 19. Be5 Qc8 20. Bd3 Qc3+ 21. Kf1 Nb4 22. Ne1 Nxd3 23. Nxd3 Be4 24. Ke2 Bxd3+ 25. Qxd3 Qxd3+ 26. Kxd3 Ne4 27. Ra2 Rec8 28. f3 Nf6 29. Rha1 Rc6 30. Ra5 b4 31. Bxf6 gxf6 32. Rb1 Rb8 33. Rb3 Kf7 34. d5 Rd6 35. Kd4 Rxd5+ 36. Rxd5 exd5 37. Kxd5 a5 38. Kc4 Ke6 39. f4 a4 40. Rxb4 Rxb4+ 41. Kxb4 Kd5 42. Kxa4 Ke4 43. Kb3 Kxe3 44. Kc3 Kxf4 45. Kd3 Kg4 46. Ke3 f4+ 47. Ke4 f5+ 48. Ke5 h5 49. h4 f3 50. gxf3+ Kxh4 51. Kxf5 Kg3 52. f4 h4 53. Kg5 h3 54. f5 h2 55. f6 h1Q 56. f7 1-0

[Event "BZM-ch U15/17"]
[Site "Osterode"]
[Date "1997.??.??"]
[Round "?"]
[White "Lehn, Stefan"]
[Black "Schnelle, S."]
[Result "1-0"]
[ECO "D38"]
[PlyCount "35"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Bb4 4. Nf3 Nf6 5. Bg5 0-0 6. e3 c6 7. cxd5 Qa5 8. Qc2 e5 9. Bxf6 Nd7 10. Bxe5 g6 11. dxc6 bxc6 12. a3 Be7 13. b4 Qb6 14. Qe4 Nb8 15. Qf4 a5 16. Qh6 f6 17. Ng5 axb4 18. Qxh7# 1-0

[Event "BZM-ch U15/17"]
[Site "Osterode"]
[Date "1997.??.??"]
[Round "?"]
[White "Renziehausen, Klaus"]
[Black "Lehn, Stefan"]
[Result "1-0"]
[ECO "C01"]
[PlyCount "47"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Nf3 Bg4 5. h3 Qe7+ 6. Be3 Bh5 7. Bd3 Nd7 8. 0-0 0-0-0 9. Re1 Qb4 10. Nc3 c6 11. Rb1 Re8 12. a3 Qa5 13. Bf5 Nh6 14. Bxh6 Bd6 15. Rxe8+ Rxe8 16. Bxg7 Rg8 17. Bh6 Qc7 18. Qd3 Bg3 19. Bxd7+ Kb8 20. fxg3 Rxg3 21. Bg4 Rxg4 22. hxg4 Bxg4 23. Qe3 Qg3 24. Bf4+ 1-0

[Event "Sued Niedersachsen-ch U15/17"]
[Site "Osterode"]
[Date "1995.??.??"]
[Round "?"]
[White "Ananjev, Alexei"]
[Black "Lehn, Stefan"]
[Result "1-0"]
[ECO "C01"]
[PlyCount "63"]
[EventDate "1995.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Bd3 Bd6 5. Nc3 Nf6 6. Nge2 Be6 7. Bg5 Nbd7 8. f4 Bg4 9. Nxd5 c6 10. Nxf6+ gxf6 11. Bh6 Qe7 12. h3 Bxe2 13. Qxe2 Qxe2+ 14. Kxe2 0-0-0 15. Kf3 Rhg8 16. Rhe1 c5 17. d5 Nb6 18. Be4 Nxd5 19. Rad1 Ne7 20. g4 Bc7 21. Rxd8+ Bxd8 22. Bd3 Ng6 23. Bc4 Nh8 24. f5 a6 25. Kg3 Bc7+ 26. Bf4 Bxf4+ 27. Kxf4 Rd8 28. Bd3 b5 29. b3 Kc7 30. Re4 Kb6 31. Kg3 Rd5 32. Re8 1-0

[Event "Sued Niedersachsen-ch U15/17"]
[Site "Osterode"]
[Date "1995.??.??"]
[Round "?"]
[White "Lehn, Stefan"]
[Black "Rennebohm, Jan"]
[Result "1-0"]
[ECO "D38"]
[PlyCount "45"]
[EventDate "1995.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Bb4 5. e3 0-0 6. Nf3 Nbd7 7. cxd5 exd5 8. Bd3 b6 9. 0-0 c5 10. Nxd5 Ba5 11. Nxf6+ Nxf6 12. Qc2 cxd4 13. Bxh7+ Kh8 14. Be4 Rb8 15. Nxd4 Bb7 16. Bxb7 Rxb7 17. Rfd1 Qe7 18. Qf5 Rc7 19. Bxf6 gxf6 20. Qh3+ Kg8 21. Qg4+ Kh8 22. Nf5 Qe5 23. Qg7# 1-0

[Event "Sued Niedersachsen-ch U15/17"]
[Site "Osterode"]
[Date "1995.??.??"]
[Round "?"]
[White "Riban, Hekkja"]
[Black "Lehn, Stefan"]
[Result "0-1"]
[ECO "C01"]
[PlyCount "36"]
[EventDate "1995.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Nf3 Bd6 5. c3 Bg4 6. Be2 Nf6 7. Bg5 Nbd7 8. h3 Bh5 9. Nbd2 c6 10. 0-0 h6 11. Bh4 Qc7 12. g3 0-0-0 13. Kh2 g5 14. Nxg5 hxg5 15. Bxg5 Bxe2 16. Qxe2 Rdg8 17. h4 Rxg5 18. Qe3 Ng4+ 0-1

