[Event "GER-ch U14"]
[Site "Oberhof"]
[Date "2011.06.18"]
[Round "9"]
[White "Klesen, Jonas"]
[Black "Berkov, Mikhail"]
[Result "1/2-1/2"]
[ECO "B41"]
[WhiteElo "1233"]
[BlackElo "1782"]
[PlyCount "29"]
[EventDate "2011.06.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 142 Extra"]
[Source "ChessBase"]
[SourceDate "2011.06.27"]
[SourceVersion "1"]
[SourceVersionDate "2011.06.27"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. c4 Bb4+ 6. Nc3 Nf6 7. Bd3 Nc6 8. Nde2 0-0 9. 0-0 Ne5 10. Bg5 h6 11. Bh4 Ng6 12. Bg3 b6 13. a3 Be7 14. Qc2 d6 15. Rad1 1/2-1/2

[Event "GER-ch U14"]
[Site "Oberhof"]
[Date "2011.06.17"]
[Round "8"]
[White "Glatzel, Jonas"]
[Black "Klesen, Jonas"]
[Result "1/2-1/2"]
[ECO "C45"]
[WhiteElo "1863"]
[BlackElo "1233"]
[PlyCount "41"]
[EventDate "2011.06.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 142 Extra"]
[Source "ChessBase"]
[SourceDate "2011.06.27"]
[SourceVersion "1"]
[SourceVersionDate "2011.06.27"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Qh4 5. Nc3 Bb4 6. Be2 Qxe4 7. Ndb5 Bxc3+ 8. bxc3 Kd8 9. 0-0 a6 10. Nd4 Nxd4 11. cxd4 Nf6 12. Re1 Re8 13. c4 d6 14. Bg5 Qf5 15. Qd2 h6 16. Bh4 g5 17. Bd3 Qg4 18. Rxe8+ Kxe8 19. Qe3+ Qe6 20. Qd2 Qg4 21. Qe3+ 1/2-1/2

[Event "GER-ch U14"]
[Site "Oberhof"]
[Date "2011.06.16"]
[Round "7"]
[White "Klesen, Jonas"]
[Black "Wachinger, David"]
[Result "1/2-1/2"]
[ECO "B19"]
[WhiteElo "1233"]
[BlackElo "1690"]
[PlyCount "84"]
[EventDate "2011.06.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 142 Extra"]
[Source "ChessBase"]
[SourceDate "2011.06.27"]
[SourceVersion "1"]
[SourceVersionDate "2011.06.27"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. h4 h6 7. Nf3 Nd7 8. h5 Bh7 9. Bd3 Bxd3 10. Qxd3 Ngf6 11. Bd2 Qc7 12. 0-0-0 e6 13. Qe2 0-0-0 14. Ne5 Nxe5 15. dxe5 Nd5 16. c4 Nb6 17. Ba5 Be7 18. f4 f6 19. Bxb6 axb6 20. Qg4 f5 21. Qg6 Kb8 22. Qxe6 Bb4 23. Qxf5 Rhf8 24. Qe4 Rxd1+ 25. Rxd1 Qf7 26. f5 Qe7 27. Qf4 Qc7 28. Ne4 Ka7 29. g4 Qf7 30. Nd6 Qe7 31. e6 Rd8 32. Nf7 Rxd1+ 33. Kxd1 Qh4 34. Qe4 Qf2 35. Qe2 Qd4+ 36. Kc2 Be7 37. Nh8 Bf6 38. Kc1 Qg1+ 39. Qd1 Qe3+ 40. Qd2 Qg1+ 41. Qd1 Qe3+ 42. Kc2 Qe5 1/2-1/2

[Event "GER-ch U14"]
[Site "Oberhof"]
[Date "2011.06.15"]
[Round "6"]
[White "Ewert, Paul"]
[Black "Klesen, Jonas"]
[Result "1-0"]
[ECO "C47"]
[WhiteElo "1661"]
[BlackElo "1233"]
[PlyCount "117"]
[EventDate "2011.06.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 142 Extra"]
[Source "ChessBase"]
[SourceDate "2011.06.27"]
[SourceVersion "1"]
[SourceVersionDate "2011.06.27"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. d4 exd4 5. Nxd4 Bb4 6. Nxc6 bxc6 7. Bd3 0-0 8. 0-0 d6 9. Bg5 Bc5 10. Qf3 Bd4 11. Rab1 Be6 12. Ne2 Be5 13. Qe3 Qd7 14. f4 Ng4 15. Qc1 f6 16. fxe5 fxg5 17. Qxg5 Bxa2 18. Rxf8+ Kxf8 19. Rf1+ Kg8 20. b3 Nxe5 21. Qd2 Qg4 22. Nc3 Bxb3 23. cxb3 Rb8 24. Bc4+ d5 25. Bxd5+ Kh8 26. Bc4 h6 27. Qd4 Nxc4 28. Qxc4 Qg5 29. h3 Qe3+ 30. Kh2 Qb6 31. Rb1 c5 32. Na4 Qd6+ 33. Kh1 Rb4 34. Qxc5 Rxe4 35. Qxd6 cxd6 36. Rd1 Rb4 37. Rxd6 Rxb3 38. Ra6 Rb7 39. Kh2 Kg8 40. Nc5 Rc7 41. Nd3 Kf7 42. Ne5+ Ke7 43. Nc6+ Kf6 44. Nxa7+ Kf5 45. Nb5 Re7 46. Ra7 Re5 47. Nd4+ Kf6 48. Nf3 Rc5 49. Kg3 Rc3 50. h4 g6 51. Rh7 h5 52. Rb7 Rc6 53. Rf7+ Kxf7 54. Ne5+ Kf6 55. Nxc6 g5 56. Nd4 gxh4+ 57. Kxh4 Ke5 58. Kxh5 Kxd4 59. g4 1-0

[Event "GER-ch U14"]
[Site "Oberhof"]
[Date "2011.06.14"]
[Round "4"]
[White "Klesen, Jonas"]
[Black "Meyers, Mark"]
[Result "0-1"]
[ECO "B23"]
[WhiteElo "1233"]
[BlackElo "1820"]
[PlyCount "56"]
[EventDate "2011.06.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 142 Extra"]
[Source "ChessBase"]
[SourceDate "2011.06.27"]
[SourceVersion "1"]
[SourceVersionDate "2011.06.27"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. f4 g6 4. Nf3 Bg7 5. Bc4 e6 6. 0-0 Nge7 7. e5 d6 8. d4 cxd4 9. Nxd4 dxe5 10. Nxc6 Qb6+ 11. Kh1 Nxc6 12. Qf3 0-0 13. fxe5 Nxe5 14. Qe4 Nxc4 15. Qxc4 Bd7 16. Rb1 Rac8 17. Qb3 Qxb3 18. axb3 Bxc3 19. bxc3 Rxc3 20. Rf2 Rfc8 21. Bh6 Rxc2 22. Rff1 Bc6 23. Rg1 Be4 24. Rbd1 Bd5 25. Rd3 Rb2 26. Rd4 Rxb3 27. Re1 Rb2 28. Red1 f5 0-1

[Event "GER-ch U14"]
[Site "Oberhof"]
[Date "2011.06.14"]
[Round "5"]
[White "Ott, Florian"]
[Black "Klesen, Jonas"]
[Result "1-0"]
[ECO "E91"]
[WhiteElo "1863"]
[BlackElo "1233"]
[PlyCount "61"]
[EventDate "2011.06.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 142 Extra"]
[Source "ChessBase"]
[SourceDate "2011.06.27"]
[SourceVersion "1"]
[SourceVersionDate "2011.06.27"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. Nc3 0-0 5. e4 d6 6. Be2 b6 7. 0-0 Bb7 8. Qc2 Nc6 9. a3 Nd7 10. Be3 e6 11. d5 exd5 12. cxd5 Nce5 13. Nd4 Nc5 14. b4 Na6 15. f4 Nd7 16. Rac1 Rc8 17. Nc6 Qe8 18. Bd4 Bxd4+ 19. Nxd4 Nab8 20. Ncb5 Nf6 21. Nxa7 Rd8 22. Bf3 Na6 23. Nac6 Bxc6 24. Nxc6 Rc8 25. Rfe1 Qd7 26. e5 Ne8 27. e6 fxe6 28. dxe6 Qg7 29. Qc4 Nb8 30. e7+ Rf7 31. Nd8 1-0

[Event "GER-ch U14"]
[Site "Oberhof"]
[Date "2011.06.13"]
[Round "3"]
[White "Krause, Benedict"]
[Black "Klesen, Jonas"]
[Result "1-0"]
[ECO "C45"]
[WhiteElo "1824"]
[BlackElo "1233"]
[PlyCount "43"]
[EventDate "2011.06.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 142 Extra"]
[Source "ChessBase"]
[SourceDate "2011.06.27"]
[SourceVersion "1"]
[SourceVersionDate "2011.06.27"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Qh4 5. Nc3 Bb4 6. Be2 Qxe4 7. Ndb5 Bxc3+ 8. bxc3 Kd8 9. 0-0 Nf6 10. Bg5 h6 11. Bxf6+ gxf6 12. Re1 Qf5 13. Bd3 Qg5 14. Qf3 Ne5 15. Qe4 Ng6 16. Qc4 c6 17. Nd6 Ne5 18. Rxe5 Qg7 19. Nf5 Qf8 20. Re7 d5 21. Qc5 Bxf5 22. Qd6+ 1-0

[Event "GER-ch U14"]
[Site "Oberhof"]
[Date "2011.06.12"]
[Round "2"]
[White "Klesen, Jonas"]
[Black "Lerch, Philipp"]
[Result "0-1"]
[ECO "B13"]
[WhiteElo "1233"]
[BlackElo "2021"]
[PlyCount "70"]
[EventDate "2011.06.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 142 Extra"]
[Source "ChessBase"]
[SourceDate "2011.06.27"]
[SourceVersion "1"]
[SourceVersionDate "2011.06.27"]
[SourceQuality "1"]

1. e4 c6 2. Nc3 d5 3. exd5 cxd5 4. d4 Nc6 5. Bb5 Nf6 6. Nf3 Bg4 7. Qd3 Bxf3 8. Qxf3 e6 9. 0-0 a6 10. Bxc6+ bxc6 11. Be3 Be7 12. Rad1 0-0 13. a3 Rb8 14. Rb1 Nd7 15. Qe2 a5 16. Rfd1 Bd6 17. Qg4 f5 18. Qe2 Qc7 19. g3 e5 20. dxe5 Nxe5 21. Bf4 Nc4 22. Qe6+ Kh8 23. Bxd6 Nxd6 24. Qe2 f4 25. Rd3 Nc4 26. Na4 Rbe8 27. Qd1 Ne5 28. Rc3 Qf7 29. Qf1 fxg3 30. fxg3 Qa7+ 31. Kg2 Rxf1 32. Rxf1 Qd4 33. Nc5 Ng4 34. Nd3 Re2+ 35. Kh1 Rxh2# 0-1

[Event "GER-chT Schools WK II"]
[Site "Verden an der Aller"]
[Date "2011.05.14"]
[Round "3.4"]
[White "Grieb, Daniel"]
[Black "Klesen, Jonas"]
[Result "0-1"]
[ECO "C62"]
[WhiteElo "1411"]
[BlackElo "1237"]
[PlyCount "84"]
[EventDate "2011.05.14"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]
[WhiteTeam "Ingelheim Muenster Gymn U17"]
[BlackTeam "Illingen Illtal Gymn U17"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 d6 4. d3 Bg4 5. Be3 Nf6 6. Nbd2 Be7 7. 0-0 0-0 8. Re1 d5 9. Bxc6 bxc6 10. Bg5 Rb8 11. Rb1 Re8 12. h3 Bxf3 13. Nxf3 dxe4 14. Bxf6 Bxf6 15. Rxe4 Qd5 16. b3 Rbd8 17. Qe2 Qa5 18. a4 Re7 19. d4 Rde8 20. dxe5 Bxe5 21. Re1 f6 22. Qc4+ Qd5 23. Nxe5 Rxe5 24. Rxe5 Rxe5 25. Rxe5 fxe5 26. Qd3 g6 27. Kf1 e4 28. Qxd5+ cxd5 29. Ke2 Kf7 30. Ke3 Ke6 31. Kd4 Kd6 32. f3 c5+ 33. Ke3 Ke5 34. fxe4 dxe4 35. c3 g5 36. g4 a5 37. b4 cxb4 38. cxb4 axb4 39. a5 b3 40. a6 b2 41. a7 b1Q 42. a8Q Qe1# 0-1

[Event "GER-chT Schools WK II"]
[Site "Verden an der Aller"]
[Date "2011.05.14"]
[Round "1.4"]
[White "Hoffmann, Dustin"]
[Black "Klesen, Jonas"]
[Result "0-1"]
[ECO "C56"]
[WhiteElo "1728"]
[BlackElo "1237"]
[PlyCount "75"]
[EventDate "2011.05.14"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]
[WhiteTeam "Halle Cantor Gymn U17"]
[BlackTeam "Illingen Illtal Gymn U17"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 e5 2. Nf3 Nc6 3. d4 Bd6 4. Bc4 Nf6 5. Bg5 exd4 6. Nxd4 Be7 7. Nc3 Nxe4 8. Nxc6 bxc6 9. Bxe7 Qxe7 10. 0-0 Nxc3 11. bxc3 0-0 12. Rb1 d5 13. Bd3 Be6 14. Qh5 h6 15. Kh1 Rab8 16. f4 Rxb1 17. Rxb1 d4 18. Qe5 Re8 19. cxd4 f6 20. Qe4 f5 21. Qxc6 Bxa2 22. Bc4+ Kf8 23. Rf1 Bxc4 24. Qxc4 Qe2 25. Qb4+ Kf7 26. Qb3+ Kf6 27. Kg1 Qe3+ 28. Qxe3 Rxe3 29. g3 Rc3 30. Rf2 a5 31. d5 a4 32. Re2 Kf7 33. Rd2 a3 34. d6 cxd6 35. Rxd6 a2 36. Ra6 Rxc2 37. Kf1 Rc1+ 38. Ke2 0-1

[Event "GER-chT Schools WK II"]
[Site "Verden an der Aller"]
[Date "2011.05.14"]
[Round "2.4"]
[White "Klesen, Jonas"]
[Black "Linnemann, Julius"]
[Result "0-1"]
[ECO "B30"]
[WhiteElo "1237"]
[BlackElo "1413"]
[PlyCount "50"]
[EventDate "2011.05.14"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]
[WhiteTeam "Illingen Illtal Gymn U17"]
[BlackTeam "Dresden St Benno Gymn U17"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 c5 2. Nc3 e6 3. Bc4 a6 4. a3 Nc6 5. Nf3 Qc7 6. d4 cxd4 7. Nxd4 Nf6 8. Nxc6 bxc6 9. Ba2 Bb7 10. Qe2 Be7 11. e5 Nd5 12. Nxd5 cxd5 13. Bf4 Bxa3 14. bxa3 Qc3+ 15. Bd2 Qxa1+ 16. Qd1 Qxa2 17. Bb4 Qc4 18. f3 a5 19. Bd6 Rc8 20. Qb1 Ba6 21. Qd1 Qxc2 22. Qxc2 Rxc2 23. g3 Rc1+ 24. Kf2 Rxh1 25. h4 Rf1+ 0-1

[Event "Saarland-ch C 85th"]
[Site "Homburg"]
[Date "2010.04.03"]
[Round "9"]
[White "Klesen, Jonas"]
[Black "Dickmann, Christopher"]
[Result "0-1"]
[ECO "B24"]
[WhiteElo "1116"]
[BlackElo "1302"]
[PlyCount "58"]
[EventDate "2010.03.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 d6 3. g3 Nc6 4. Bg2 Nf6 5. Nf3 Bg4 6. h3 Bd7 7. d3 e6 8. d4 cxd4 9. Nxd4 a6 10. Be3 Be7 11. Qd2 Qc7 12. f4 Rc8 13. Rc1 b5 14. a3 e5 15. Nd5 Nxd5 16. exd5 Nxd4 17. Bxd4 exd4 18. Qxd4 0-0 19. h4 Rfe8 20. Kf2 Bf6 21. Qb4 Qb6+ 22. Kf1 Bg4 23. Bh3 Bxh3+ 24. Rxh3 Qe3 25. Re1 Qf3+ 26. Kg1 Rxe1+ 27. Qxe1 Bd4+ 28. Kh2 Rxc2+ 29. Qd2 Rxd2# 0-1

[Event "Saarland-ch C 85th"]
[Site "Homburg"]
[Date "2010.04.02"]
[Round "8"]
[White "Luy, Markus"]
[Black "Klesen, Jonas"]
[Result "1/2-1/2"]
[ECO "C47"]
[WhiteElo "1442"]
[BlackElo "1116"]
[PlyCount "55"]
[EventDate "2010.03.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Nc3 Nc6 4. d3 Bc5 5. Be2 d6 6. 0-0 0-0 7. Bg5 h6 8. Bxf6 Qxf6 9. Nd5 Qd8 10. c3 Bg4 11. b4 Bb6 12. a4 a6 13. Nxb6 cxb6 14. Qd2 Rc8 15. d4 exd4 16. cxd4 d5 17. e5 Qe7 18. Rac1 Qxb4 19. Qd1 Bxf3 20. Bxf3 Qxd4 21. Bxd5 Rfd8 22. Qxd4 Nxd4 23. Rxc8 Rxc8 24. Bxb7 Rc5 25. Bxa6 Ra5 26. Bd3 Rxe5 27. Rb1 Kf8 28. Kf1 1/2-1/2

[Event "Saarland-ch C 85th"]
[Site "Homburg"]
[Date "2010.04.01"]
[Round "7"]
[White "Klesen, Jonas"]
[Black "Bruehan, Caren"]
[Result "1-0"]
[ECO "B24"]
[WhiteElo "1116"]
[BlackElo "1320"]
[PlyCount "71"]
[EventDate "2010.03.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. Nf3 a6 6. 0-0 b5 7. d3 Bb7 8. Be3 d6 9. d4 cxd4 10. Nxd4 Rc8 11. Nxc6 Bxc6 12. Re1 b4 13. Ne2 Qc7 14. Rb1 Nf6 15. Qd4 a5 16. c3 Rb8 17. c4 0-0 18. Qd3 Qb7 19. f3 Nd7 20. Nf4 Ne5 21. Qc2 Rfd8 22. Red1 Rbc8 23. b3 e6 24. Nd3 Nxd3 25. Rxd3 d5 26. Rbd1 Qa8 27. Qd2 Bc3 28. Qc2 dxe4 29. fxe4 Rxd3 30. Rxd3 Bxe4 31. Bxe4 Qxe4 32. Rd8+ Rxd8 33. Qxe4 Rd1+ 34. Kf2 Ra1 35. Qa8+ Kg7 36. Qxa5 1-0

[Event "Saarland-ch C 85th"]
[Site "Homburg"]
[Date "2010.03.31"]
[Round "6"]
[White "Mueller, Max Ferdinand"]
[Black "Klesen, Jonas"]
[Result "0-1"]
[ECO "C78"]
[WhiteElo "1198"]
[BlackElo "1116"]
[PlyCount "56"]
[EventDate "2010.03.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Bd6 6. Re1 b5 7. Bb3 Bb7 8. c3 Na5 9. Bc2 c5 10. d4 cxd4 11. cxd4 Qe7 12. Bf4 Nc6 13. Bg3 0-0 14. d5 Nb4 15. Bb3 a5 16. Qe2 a4 17. Bd1 Rfc8 18. a3 Na6 19. Qxb5 Nc5 20. Qe2 Ba6 21. Qe3 Nd3 22. Re2 Ng4 23. Qg5 Qxg5 24. Nxg5 Rc1 25. Rd2 Nxb2 26. h3 Nxd1 27. hxg4 Ne3+ 28. Kh2 Nf1+ 0-1

[Event "Saarland-ch C 85th"]
[Site "Homburg"]
[Date "2010.03.30"]
[Round "5"]
[White "Klesen, Jonas"]
[Black "Prein, Timm"]
[Result "1/2-1/2"]
[ECO "C56"]
[WhiteElo "1116"]
[BlackElo "1343"]
[PlyCount "114"]
[EventDate "2010.03.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]

1. e4 e5 2. Nc3 Nc6 3. Bc4 Nf6 4. Nf3 d6 5. d4 Bg4 6. Bb5 exd4 7. Bxc6+ bxc6 8. Qxd4 c5 9. Qd3 Be7 10. Bf4 0-0 11. 0-0 Nh5 12. Bd2 a6 13. h3 Be6 14. Rfe1 Re8 15. Nd5 Nf6 16. Nxe7+ Qxe7 17. Ng5 h6 18. Nxe6 fxe6 19. e5 Nd5 20. c4 Nb4 21. Bxb4 cxb4 22. exd6 cxd6 23. Re4 Rad8 24. Rae1 Qf6 25. Qe2 e5 26. c5 dxc5 27. Qc4+ Kh8 28. Qxc5 Qd6 29. Qxd6 Rxd6 30. Rxb4 Rd5 31. f4 Kg8 32. fxe5 Rdxe5 33. Rxe5 Rxe5 34. Rf4 Re2 35. Rf2 Re1+ 36. Rf1 Re2 37. Rb1 a5 38. a4 Re4 39. b3 Kf7 40. Kf2 Ke6 41. Re1 Rxe1 42. Kxe1 Ke5 43. Ke2 Ke4 44. Kd2 Kd4 45. Kc2 g6 46. h4 g5 47. hxg5 hxg5 48. g4 Kd5 49. Kd3 Kc5 50. Ke4 Kb4 51. Kf5 Kxb3 52. Kxg5 Kxa4 53. Kf5 Kb4 54. g5 a4 55. g6 a3 56. g7 a2 57. g8Q a1Q 1/2-1/2

[Event "Saarland-ch C 85th"]
[Site "Homburg"]
[Date "2010.03.28"]
[Round "3"]
[White "Kordt, Franz"]
[Black "Klesen, Jonas"]
[Result "1/2-1/2"]
[ECO "A22"]
[WhiteElo "1345"]
[BlackElo "1116"]
[PlyCount "82"]
[EventDate "2010.03.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]

1. e4 e5 2. c4 Nf6 3. d3 Nc6 4. Nc3 Bb4 5. Bd2 Bxc3 6. Bxc3 d6 7. h3 Qe7 8. b4 a6 9. a4 Na7 10. b5 b6 11. Rb1 axb5 12. axb5 Bd7 13. Nf3 c6 14. bxc6 Nxc6 15. Rxb6 0-0 16. Be2 Ra3 17. Qc2 Rfa8 18. 0-0 Ra2 19. Rb2 R2a4 20. Nd2 Qd8 21. f4 exf4 22. Rxf4 Ra1+ 23. Kh2 Ne5 24. Nb3 R1a6 25. Rf1 Qc7 26. Rfb1 d5 27. Kh1 dxc4 28. Bxe5 Qxe5 29. Qxc4 Bb5 30. Qd4 Qxd4 31. Nxd4 Be8 32. Nb5 Bxb5 33. Rxb5 Ra1 34. Kg1 Kf8 35. Kf2 Rxb1 36. Rxb1 Ke7 37. Bf3 Ra4 38. Rb6 h6 39. Ke3 Ra5 40. Rc6 Ra7 41. e5 Nd7 1/2-1/2

[Event "GER-chT U12"]
[Site "Arendsee"]
[Date "2009.12.30"]
[Round "7.2"]
[White "Klesen, Jonas"]
[Black "Wernsdoerfer, Fabio"]
[Result "0-1"]
[ECO "C30"]
[WhiteElo "995"]
[BlackElo "1293"]
[PlyCount "100"]
[EventDate "2009.12.27"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]
[WhiteTeam "Eppelborn U12"]
[BlackTeam "Forchheim SC U12"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 e5 2. Nc3 Nf6 3. f4 Nc6 4. Nf3 d6 5. Bc4 Bg4 6. h3 Bh5 7. g4 Nxg4 8. hxg4 Bxg4 9. d3 Nd4 10. Rf1 Nxf3+ 11. Rxf3 Qh4+ 12. Kd2 Bxf3 13. Qxf3 Qxf4+ 14. Qxf4 exf4 15. Nd5 Rc8 16. Nxf4 Be7 17. Ke2 Bg5 18. Kf2 Bxf4 19. Bxf4 f6 20. Rf1 g5 21. Be3 a6 22. Kg3 Ke7 23. Bd4 Rcf8 24. Kg4 c5 25. Bc3 b5 26. Bb3 h5+ 27. Kg3 Rh6 28. Rf2 h4+ 29. Kh3 Rfh8 30. Bd2 R8h7 31. Rg2 Rg7 32. c3 Rh8 33. Rg1 g4+ 34. Rxg4 Rxg4 35. Kxg4 h3 36. Bd1 h2 37. Bf3 h1Q 38. Bxh1 Rxh1 39. a3 Rh2 40. Bc1 Rc2 41. Be3 Rxb2 42. d4 c4 43. e5 fxe5 44. dxe5 dxe5 45. Kf3 Rb3 46. Ke4 Ke6 47. Bd2 Rxa3 48. Bc1 Rxc3 49. Bb2 Rb3 50. Bxe5 a5 0-1

[Event "GER-chT U12"]
[Site "Arendsee"]
[Date "2009.12.29"]
[Round "5.2"]
[White "Deguenther, Julius"]
[Black "Klesen, Jonas"]
[Result "0-1"]
[ECO "C44"]
[WhiteElo "1247"]
[BlackElo "995"]
[PlyCount "72"]
[EventDate "2009.12.27"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]
[WhiteTeam "Unterkochen U12"]
[BlackTeam "Eppelborn U12"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 e5 2. Nf3 Nc6 3. d3 Nf6 4. g3 Bc5 5. Bg2 d6 6. 0-0 0-0 7. h3 Be6 8. c3 Bb6 9. Qe2 Ne7 10. Bg5 Ng6 11. Nbd2 h6 12. Be3 c6 13. Bxb6 Qxb6 14. b3 Nh5 15. Kh2 Nf6 16. Ng1 Rad8 17. Qd1 d5 18. Qc2 d4 19. c4 Qb4 20. Ne2 Rc8 21. Rac1 b5 22. f4 exf4 23. Nxf4 Rfe8 24. Nxg6 fxg6 25. Qd1 Rf8 26. Rc2 Rc7 27. Qe2 Rcf7 28. Rf3 g5 29. g4 Nxg4+ 30. hxg4 Bxg4 31. Qd1 Qd6+ 32. Kh1 Bxf3 33. Nxf3 g4 34. Ne1 Qg3 35. Re2 Rf1+ 36. Bxf1 Rxf1# 0-1

[Event "GER-chT U12"]
[Site "Arendsee"]
[Date "2009.12.29"]
[Round "6.2"]
[White "Klesen, Jonas"]
[Black "Dette, Tim"]
[Result "1-0"]
[ECO "C10"]
[WhiteElo "995"]
[BlackElo "1260"]
[PlyCount "104"]
[EventDate "2009.12.27"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]
[WhiteTeam "Eppelborn U12"]
[BlackTeam "Katernberg SF U12"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Nf3 Nf6 5. Nc3 c5 6. Bf4 Be7 7. Be2 0-0 8. 0-0 Nc6 9. Re1 Bf5 10. Bd3 Bg4 11. dxc5 Bxc5 12. h3 Bh5 13. Na4 Bd6 14. Bxd6 Qxd6 15. Be2 Rfe8 16. Nd2 Bxe2 17. Rxe2 Rxe2 18. Qxe2 Re8 19. Qd1 h6 20. g3 Ne4 21. Nxe4 Rxe4 22. Nc3 Rd4 23. Qe2 Ne5 24. Nb5 Qc5 25. Nxd4 Qxd4 26. c3 Qe4 27. Qxe4 dxe4 28. Rd1 Kf8 29. Kf1 Ke7 30. Ke2 Ke6 31. g4 g6 32. Rd8 Kf6 33. Ra8 Nc6 34. Rc8 Kg7 35. Ke3 g5 36. Kxe4 Kf6 37. Rc7 Nd8 38. b4 a5 39. Rd7 Nc6 40. Rxb7 axb4 41. Rb6 bxc3 42. Rxc6+ Kg7 43. Rxc3 Kg6 44. a4 h5 45. a5 hxg4 46. hxg4 f6 47. a6 f5+ 48. gxf5+ Kh5 49. a7 g4 50. a8Q Kh4 51. f6 g3 52. fxg3+ Kh3 1-0

[Event "GER-chT U12"]
[Site "Arendsee"]
[Date "2009.12.28"]
[Round "3.2"]
[White "Klesen, Jonas"]
[Black "Dirks, Alexander"]
[Result "1-0"]
[ECO "C30"]
[WhiteElo "995"]
[BlackElo "1107"]
[PlyCount "43"]
[EventDate "2009.12.27"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]
[WhiteTeam "Eppelborn U12"]
[BlackTeam "Widdern SC U12"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 e5 2. Nc3 Nf6 3. f4 d6 4. Nf3 Nc6 5. Bb5 exf4 6. d4 a6 7. Bxc6+ bxc6 8. 0-0 Be7 9. Bxf4 0-0 10. Qe2 Re8 11. Rad1 a5 12. Qe1 d5 13. e5 Nd7 14. e6 Nf6 15. exf7+ Kxf7 16. Qg3 Ng4 17. Bxc7 Qd7 18. Ne5+ Kg8 19. Nxd7 Bxd7 20. Rde1 c5 21. Nxd5 Ra7 22. Rxe7 1-0

[Event "GER-chT U12"]
[Site "Arendsee"]
[Date "2009.12.28"]
[Round "4.2"]
[White "Tesch, Davy"]
[Black "Klesen, Jonas"]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "1303"]
[BlackElo "995"]
[PlyCount "81"]
[EventDate "2009.12.27"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]
[WhiteTeam "Eberswalde U12"]
[BlackTeam "Eppelborn U12"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. d4 Nf6 2. Nf3 d5 3. e3 Nc6 4. b3 b6 5. Bb2 Bb7 6. Bd3 e6 7. 0-0 Bd6 8. Ne5 Bxe5 9. dxe5 Nd7 10. f4 0-0 11. Nd2 f5 12. Nf3 h6 13. Bb5 a6 14. Bxc6 Bxc6 15. Nd4 Qe8 16. Nxc6 Nc5 17. Nd4 Ne4 18. Nf3 Rd8 19. Nd2 Qc6 20. Nxe4 dxe4 21. Qe2 a5 22. Rfd1 Qc5 23. Rxd8 Rxd8 24. Kf2 Qb4 25. Rd1 Re8 26. g3 Kf7 27. Qd2 Qc5 28. c3 Qc6 29. Qd7+ Qxd7 30. Rxd7+ Re7 31. Rxe7+ Kxe7 32. Ke2 b5 33. Kd2 b4 34. cxb4 axb4 35. Bd4 Kd7 36. Bc5 Ke8 37. Bxb4 Kd7 38. Kc3 Kc8 39. Bf8 h5 40. Bxg7 Kd7 41. Kc4 1-0

[Event "GER-chT U12"]
[Site "Arendsee"]
[Date "2009.12.27"]
[Round "2.2"]
[White "Altstadt, Karl Simon"]
[Black "Klesen, Jonas"]
[Result "1-0"]
[ECO "C65"]
[WhiteElo "1349"]
[BlackElo "995"]
[PlyCount "71"]
[EventDate "2009.12.27"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]
[WhiteTeam "Halle USV U12"]
[BlackTeam "Eppelborn U12"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 e5 2. Nf3 Nf6 3. Nc3 Nc6 4. Bb5 d6 5. d3 Bd7 6. Bg5 Be7 7. Ne2 a6 8. Bxc6 Bxc6 9. 0-0 h6 10. Be3 Qd7 11. c4 0-0 12. Ng3 Ng4 13. h3 Nxe3 14. fxe3 g6 15. d4 b5 16. c5 dxc5 17. Nxe5 Qd6 18. Nxc6 Qxc6 19. Rc1 Qd6 20. e5 Qc6 21. Qg4 Bg5 22. Rxc5 Qb6 23. Rc3 Rac8 24. a3 a5 25. h4 Be7 26. Nf5 Rce8 27. Nxh6+ Kg7 28. Nf5+ Kg8 29. h5 Kh7 30. h6 Rg8 31. Nh4 Ref8 32. Qe4 Kxh6 33. Rc6 Qa7 34. Nf5+ Kh7 35. Nxe7 Rg7 36. Qh4# 1-0

[Event "GER-chT U12"]
[Site "Arendsee"]
[Date "2009.12.27"]
[Round "1.2"]
[White "Klesen, Jonas"]
[Black "Castell, Patrick"]
[Result "0-1"]
[ECO "C55"]
[WhiteElo "995"]
[BlackElo "1374"]
[PlyCount "116"]
[EventDate "2009.12.27"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]
[WhiteTeam "Eppelborn U12"]
[BlackTeam "Vaterstetten SC U12"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. Bc4 Nxe4 5. Bxf7+ Kxf7 6. Nxe4 Be7 7. b3 Rf8 8. 0-0 Kg8 9. Bb2 d6 10. h3 Bf5 11. Ng3 Bg6 12. d4 exd4 13. Nxd4 Nxd4 14. Bxd4 Bf6 15. Bxf6 Qxf6 16. Qd2 Kh8 17. Kh2 Qf4 18. Qxf4 Rxf4 19. c3 Raf8 20. f3 Kg8 21. Rae1 Bd3 22. Rf2 Bg6 23. Ne2 R4f6 24. Ng3 c6 25. Rfe2 d5 26. Re7 R6f7 27. Re8 Rd7 28. R8e7 Rfd8 29. Rxd7 Rxd7 30. Nf1 Kf8 31. Kg3 Re7 32. Rxe7 Kxe7 33. Kf4 Ke6 34. Ne3 c5 35. Nd1 Bb1 36. a3 Bc2 37. Ne3 Bxb3 38. Nf5 g6 39. Ne3 d4 40. cxd4 cxd4 41. Nf1 Bc2 42. Kg3 b5 43. Nd2 a5 44. Kf2 b4 45. axb4 axb4 46. Nc4 b3 47. Ke2 d3+ 48. Kd2 Kf5 49. Nb2 Kf4 50. Nxd3+ Bxd3 51. Kxd3 Kg3 52. Kc3 Kxg2 53. Kxb3 Kxf3 54. Kc2 Kg3 55. Kd2 Kxh3 56. Ke3 g5 57. Kf3 g4+ 58. Kf4 g3 0-1

[Event "Saarland-ch C"]
[Site "Schiffweiler"]
[Date "2009.04.11"]
[Round "9"]
[White "Klesen, Jonas"]
[Black "Schirra, Dustin"]
[Result "1/2-1/2"]
[ECO "C26"]
[WhiteElo "1022"]
[BlackElo "1112"]
[PlyCount "69"]
[EventDate "2009.04.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 e5 2. Nc3 Nc6 3. g3 Nf6 4. Bg2 Bc5 5. Nge2 Ng4 6. 0-0 Qf6 7. Nd5 Bxf2+ 8. Kh1 Qd6 9. h3 0-0 10. d3 Ne3 11. Bxe3 Bxe3 12. Nxe3 Qh6 13. Nf5 Qh5 14. Nc3 Qxd1 15. Raxd1 Nb4 16. Rf2 d6 17. a3 Nc6 18. Nd5 Bxf5 19. exf5 Nd4 20. Nxc7 Rac8 21. Nd5 Rxc2 22. Rxc2 Nxc2 23. Rc1 Nd4 24. Rc7 Nxf5 25. Ne7+ Nxe7 26. Rxe7 Rb8 27. Rxb7 Rxb7 28. Bxb7 Kf8 29. Kg2 Ke7 30. Bd5 f6 31. Kf3 f5 32. b4 g5 33. h4 g4+ 34. Ke3 Kd7 35. a4 1/2-1/2

[Event "Saarland-ch C"]
[Site "Schiffweiler"]
[Date "2009.04.10"]
[Round "8"]
[White "Weiland, Gerd"]
[Black "Klesen, Jonas"]
[Result "0-1"]
[ECO "D00"]
[WhiteElo "960"]
[BlackElo "1022"]
[PlyCount "102"]
[EventDate "2009.04.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. d4 Nf6 2. Nc3 d5 3. Nf3 Nc6 4. Bf4 a6 5. e3 Bf5 6. a3 e6 7. Ne5 Nxe5 8. Bxe5 Bd6 9. f4 Bxe5 10. fxe5 Ng4 11. Qe2 Qh4+ 12. g3 Qh6 13. Nd1 Be4 14. Rg1 Nxh2 15. Bg2 Bf5 16. Nf2 Qg6 17. e4 Bg4 18. Nxg4 Nxg4 19. Bh3 Nh6 20. 0-0-0 Qxe4 21. Qh5 Qe3+ 22. Kb1 g6 23. Qh4 Nf5 24. Qf6 0-0 25. Bxf5 exf5 26. Qe7 Qf2 27. Qh4 Rac8 28. Rh1 h5 29. Qg5 Qf3 30. Rdf1 Qg4 31. Qe3 Rfe8 32. Rf4 Qg5 33. Qf3 Re7 34. Rh3 Rd8 35. Qe3 Rde8 36. Qf3 c6 37. Qf2 f6 38. Rf3 Kf7 39. Re3 fxe5 40. Rxe5 Rxe5 41. dxe5 Rxe5 42. Qb6 Qg4 43. Qc7+ Re7 44. Rh4 Qd1+ 45. Ka2 Rxc7 46. c3 Qg1 47. Rh3 Qg2 48. Rh4 Qxg3 49. Rd4 Qf2 50. Kb3 Qxd4 51. cxd4 h4 0-1

[Event "Saarland-ch C"]
[Site "Schiffweiler"]
[Date "2009.04.09"]
[Round "7"]
[White "Klesen, Jonas"]
[Black "Christmann, Walter"]
[Result "0-1"]
[ECO "C26"]
[WhiteElo "1022"]
[BlackElo "1155"]
[PlyCount "28"]
[EventDate "2009.04.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 e5 2. Nc3 Nc6 3. g3 Nf6 4. Bg2 Bc5 5. h3 d6 6. d3 h6 7. Nge2 Be6 8. Bd2 Qd7 9. f4 exf4 10. gxf4 g6 11. Nd5 Nxd5 12. exd5 Qe7 13. c3 Qh4+ 14. Kf1 Qf2# 0-1

[Event "Saarland-ch C"]
[Site "Schiffweiler"]
[Date "2009.04.07"]
[Round "5"]
[White "Wolsdorfer, Tim"]
[Black "Klesen, Jonas"]
[Result "1-0"]
[ECO "C27"]
[WhiteElo "1171"]
[BlackElo "1022"]
[PlyCount "65"]
[EventDate "2009.04.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 e5 2. Bc4 Nf6 3. Nc3 Nc6 4. d3 Bc5 5. f4 d6 6. Qe2 Nd4 7. Qd2 exf4 8. Qxf4 Nxc2+ 9. Kd1 Nxa1 10. Be3 Bxe3 11. Qxe3 Bg4+ 12. Nf3 0-0 13. h3 Bh5 14. g4 Bg6 15. Re1 c6 16. d4 Qd7 17. Kd2 Rfe8 18. Bd3 b5 19. b4 d5 20. e5 Ne4+ 21. Nxe4 Qe7 22. Nd6 Red8 23. Bxg6 hxg6 24. Rxa1 f6 25. Qd3 g5 26. Rh1 a5 27. h4 axb4 28. Qb1 Qd7 29. hxg5 Qxg4 30. Qh7+ Kf8 31. Qh8+ Ke7 32. Qxg7+ Ke6 33. Qf7# 1-0

[Event "Saarland-ch C"]
[Site "Schiffweiler"]
[Date "2009.04.06"]
[Round "4"]
[White "Prein, Timm"]
[Black "Klesen, Jonas"]
[Result "1-0"]
[ECO "C27"]
[WhiteElo "1242"]
[BlackElo "1022"]
[PlyCount "35"]
[EventDate "2009.04.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 e5 2. Bc4 Nf6 3. Nc3 Nxe4 4. Nxe4 d5 5. Qh5 Nc6 6. Bb3 g6 7. Qf3 f5 8. Nc3 e4 9. Qd1 d4 10. Nd5 Be6 11. Nxc7+ Qxc7 12. Bxe6 d3 13. Bb3 Nd4 14. c3 Nc6 15. Nh3 Bd6 16. g3 0-0-0 17. Ng5 Rhe8 18. Ne6 1-0

[Event "Saarland-ch C"]
[Site "Schiffweiler"]
[Date "2009.04.05"]
[Round "3"]
[White "Klesen, Jonas"]
[Black "Hinsberger, Sascha"]
[Result "1/2-1/2"]
[ECO "B12"]
[WhiteElo "1022"]
[BlackElo "1255"]
[PlyCount "85"]
[EventDate "2009.04.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 c6 2. Nc3 d5 3. e5 Bf5 4. d4 e6 5. Nf3 Qb6 6. b3 c5 7. Na4 Qc7 8. Bd3 Bxd3 9. Qxd3 b6 10. Ba3 Nd7 11. Qc3 Rc8 12. 0-0 b5 13. Nxc5 Bxc5 14. dxc5 Nxc5 15. Bxc5 Qxc5 16. Qxc5 Rxc5 17. Nd4 a6 18. Rac1 Ne7 19. f4 Nc6 20. Nxc6 Rxc6 21. a4 bxa4 22. bxa4 0-0 23. Rfd1 Rfc8 24. Rd2 Rc4 25. Ra1 Rxc2 26. Rxc2 Rxc2 27. Rb1 Rc8 28. Rb6 Ra8 29. Rd6 a5 30. g4 Kf8 31. f5 Ke7 32. Rb6 Rd8 33. Ra6 d4 34. Kf2 d3 35. Ke1 Rd5 36. Ra7+ Kd8 37. Kd2 Rxe5 38. Rxf7 exf5 39. Rxf5 Re2+ 40. Kxd3 Rxh2 41. Rxa5 Rh4 42. Rd5+ Kc7 43. Rd4 1/2-1/2

[Event "Saarland-ch C"]
[Site "Schiffweiler"]
[Date "2009.04.04"]
[Round "2"]
[White "Dickmann, Christopher"]
[Black "Klesen, Jonas"]
[Result "1/2-1/2"]
[ECO "A29"]
[WhiteElo "1231"]
[BlackElo "1022"]
[PlyCount "52"]
[EventDate "2009.04.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. c4 Nf6 2. g3 e5 3. Bg2 Bc5 4. Nf3 Nc6 5. Nc3 d6 6. h3 h6 7. d3 Be6 8. 0-0 Qd7 9. b3 Bxh3 10. e3 Bxg2 11. Kxg2 g5 12. Rh1 d5 13. Nxg5 0-0-0 14. Nh3 d4 15. Ne4 Nxe4 16. dxe4 Qe6 17. Qe2 d3 18. Qd1 Qd6 19. Bd2 Bb4 20. Rc1 Bxd2 21. Qxd2 Qb4 22. Rc3 Qd6 23. Rd1 Qg6 24. f3 Rhg8 25. g4 h5 26. Nf2 hxg4 1/2-1/2

[Event "Saarland-ch C"]
[Site "Schiffweiler"]
[Date "2009.04.03"]
[Round "1"]
[White "Klesen, Jonas"]
[Black "Zengerle, Tobias"]
[Result "0-1"]
[ECO "C64"]
[WhiteElo "1022"]
[BlackElo "1310"]
[PlyCount "40"]
[EventDate "2009.04.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 e5 2. Nc3 Bc5 3. Nf3 Nc6 4. Bb5 d6 5. d4 exd4 6. Nxd4 Bd7 7. Nxc6 Bxc6 8. Bc4 h6 9. Qf3 Qf6 10. Bd5 Qxf3 11. gxf3 Bxd5 12. Nxd5 Rc8 13. b4 Bd4 14. c3 Bf6 15. Bb2 c6 16. Ne3 Ne7 17. Nc4 Rd8 18. f4 Ng6 19. f5 Ne5 20. Nd2 Nd3+ 0-1

[Event "GER-chT U12"]
[Site "Leipzig"]
[Date "2008.12.30"]
[Round "7"]
[White "Klesen, Jonas"]
[Black "Linnemann, Niklas"]
[Result "0-1"]
[ECO "B46"]
[PlyCount "58"]
[EventDate "2008.12.27"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]
[WhiteTeam "Eppelborn U12"]
[BlackTeam "Coswig TuS U12"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 c5 2. Nc3 e6 3. Nf3 a6 4. d4 cxd4 5. Nxd4 Nc6 6. Be3 Nf6 7. Nxc6 bxc6 8. a3 d5 9. e5 Nd7 10. Bd4 c5 11. Be3 d4 12. Bxd4 cxd4 13. Qxd4 Bb7 14. f3 Bc5 15. Qg4 0-0 16. 0-0-0 Qe7 17. b4 Nxe5 18. Qf4 Ng6 19. Qg3 Bb6 20. Bd3 a5 21. Kd2 Rfd8 22. Ke2 axb4 23. axb4 Bc7 24. Qf2 Nf4+ 25. Kf1 Nxd3 26. cxd3 Qxb4 27. Ne4 Bxe4 28. fxe4 h6 29. Ke2 Ra2+ 0-1

[Event "GER-chT U12"]
[Site "Leipzig"]
[Date "2008.12.29"]
[Round "5"]
[White "Richter, Leonard"]
[Black "Klesen, Jonas"]
[Result "0-1"]
[ECO "C42"]
[PlyCount "36"]
[EventDate "2008.12.27"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]
[WhiteTeam "Leipzig BSG Chemie U12"]
[BlackTeam "Eppelborn U12"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 Qe7 4. d4 d6 5. Nf3 Nxe4 6. Be3 g6 7. Nbd2 Bh6 8. Nxe4 Qxe4 9. Bd3 Qe7 10. Qe2 Bxe3 11. fxe3 Nc6 12. 0-0-0 Be6 13. e4 d5 14. e5 0-0-0 15. c4 Nb4 16. b3 Nxd3+ 17. Qxd3 Qa3+ 18. Kb1 Bf5 0-1

[Event "GER-chT U12"]
[Site "Leipzig"]
[Date "2008.12.29"]
[Round "6"]
[White "Sabirov, Ramil"]
[Black "Klesen, Jonas"]
[Result "1-0"]
[ECO "C42"]
[PlyCount "49"]
[EventDate "2008.12.27"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]
[WhiteTeam "Porz SG U12"]
[BlackTeam "Eppelborn U12"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 Qe7 4. d4 d6 5. Nf3 Nxe4 6. Be3 g6 7. Bc4 Bh6 8. 0-0 Bg7 9. Nbd2 0-0 10. Re1 Bf5 11. Bg5 Bf6 12. Bxf6 Qxf6 13. Nxe4 Bxe4 14. Rxe4 c6 15. Re3 d5 16. Bd3 Nd7 17. Qe2 Qd8 18. Re1 Nf6 19. h3 h6 20. Ne5 Kg7 21. Rg3 g5 22. Qf3 Rh8 23. Qf5 Qg8 24. Ree3 Ne8 25. Rxg5+ 1-0

[Event "GER-chT U12"]
[Site "Leipzig"]
[Date "2008.12.28"]
[Round "4"]
[White "Klesen, Jonas"]
[Black "Spitzlei, Philipp"]
[Result "0-1"]
[ECO "C29"]
[PlyCount "74"]
[EventDate "2008.12.27"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]
[WhiteTeam "Eppelborn U12"]
[BlackTeam "Bodenheim U12"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 e5 2. Nc3 Nf6 3. f4 Bb4 4. Bd3 exf4 5. e5 Bxc3 6. bxc3 Nd5 7. Nf3 d6 8. Ba3 Be6 9. exd6 cxd6 10. c4 Nf6 11. Qe2 0-0 12. 0-0 Re8 13. Qf2 Nc6 14. h3 Rc8 15. Kh2 Bg4 16. g3 Bxf3 17. Qxf3 fxg3+ 18. Qxg3 Ne5 19. Rg1 Nh5 20. Qg2 Nxd3 21. cxd3 Qa5 22. Bb2 g6 23. Bc3 Qf5 24. Qxb7 Qxd3 25. Rge1 Qg3+ 26. Kh1 Rxe1+ 27. Rxe1 Qxe1+ 28. Kg2 Qg3+ 29. Kf1 Qxh3+ 30. Ke2 Re8+ 31. Kd1 Qf1+ 32. Kc2 Qf5+ 33. Kb2 Qc5 34. Qd7 Rb8+ 35. Kc2 Qxc4 36. Qxa7 Qe4+ 37. Kd1 Rb1# 0-1

[Event "GER-chT U12"]
[Site "Leipzig"]
[Date "2008.12.28"]
[Round "3"]
[White "Polert, Annika"]
[Black "Klesen, Jonas"]
[Result "1-0"]
[ECO "A52"]
[PlyCount "89"]
[EventDate "2008.12.27"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]
[WhiteTeam "Harksheide U12"]
[BlackTeam "Eppelborn U12"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. Nf3 Bc5 5. e3 Nc6 6. Nc3 Ngxe5 7. Nxe5 Nxe5 8. b3 d6 9. Be2 Bf5 10. Bb2 Bb4 11. a3 Bxc3+ 12. Bxc3 Qd7 13. f4 Ng4 14. Bxg4 Bxg4 15. Qd2 f6 16. h3 Bf5 17. 0-0-0 Qc6 18. Rhe1 b5 19. Qd5 Qxd5 20. Rxd5 Be4 21. Rxb5 Bxg2 22. h4 Kd7 23. Ra5 Rhb8 24. b4 Rb7 25. Rg1 Be4 26. Rxg7+ Ke6 27. Kd2 Rc8 28. Bd4 Rd8 29. Rxa7 Rxa7 30. Bxa7 Ra8 31. Rxc7 d5 32. c5 Rd8 33. Kc3 h5 34. a4 Rd7 35. Rxd7 Kxd7 36. b5 Kc7 37. a5 f5 38. a6 d4+ 39. exd4 Bb7 40. axb7 Kxb7 41. Bb6 Kc8 42. d5 Kb7 43. d6 Kc8 44. c6 Kb8 45. d7 1-0

[Event "GER-chT U12"]
[Site "Leipzig"]
[Date "2008.12.27"]
[Round "1"]
[White "Buchberger, Sascha"]
[Black "Klesen, Jonas"]
[Result "1-0"]
[ECO "C50"]
[PlyCount "57"]
[EventDate "2008.12.27"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]
[WhiteTeam "Augsburg SK Kriegshaber U12"]
[BlackTeam "Eppelborn U12"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 e5 2. Nf3 Nf6 3. Nc3 Nc6 4. Bc4 Bc5 5. d3 d6 6. Be3 Bxe3 7. fxe3 Bd7 8. h3 Qe7 9. 0-0 0-0-0 10. Qd2 Rdg8 11. Rae1 g5 12. d4 g4 13. hxg4 Rxg4 14. Nh2 Nxe4 15. Nxe4 Rxe4 16. Rxf7 Qg5 17. Nf3 Qg6 18. Bd5 Rg4 19. dxe5 Rg8 20. Re2 Rg3 21. Rf6 Qxf6 22. exf6 Rf8 23. Qc3 Rg6 24. f7 Bg4 25. Rf2 Be6 26. Bxe6+ Rxe6 27. Ng5 Rh6 28. Qg7 Rd8 29. Qxh6 1-0

[Event "GER-chT U12"]
[Site "Leipzig"]
[Date "2008.12.27"]
[Round "2"]
[White "Klesen, Jonas"]
[Black "Hahn, Cedric"]
[Result "0-1"]
[ECO "C01"]
[PlyCount "56"]
[EventDate "2008.12.27"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]
[WhiteTeam "Eppelborn U12"]
[BlackTeam "Eppingen U12"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Nc3 Nf6 5. Bf4 Bf5 6. Nb5 Na6 7. Qd2 c6 8. Nc3 Qb6 9. 0-0-0 Be7 10. Re1 Be6 11. Nf3 0-0 12. Bd3 Nb4 13. Re3 Qa5 14. a3 a6 15. Nb1 Nxd3+ 16. Qxd3 c5 17. dxc5 Bxc5 18. b4 Bxe3+ 19. Bxe3 Qc7 20. h4 Rac8 21. Bc5 Rfd8 22. h5 b6 23. Bd4 Ne8 24. h6 g6 25. Ba1 Bf5 26. Qc3 Qxc3 27. Bxc3 Be4 28. Nh4 d4 0-1

[Event "GER-ch U10"]
[Site "Willingen"]
[Date "2007.06.01"]
[Round "10"]
[White "Klesen, Jonas"]
[Black "Titgemeyer, Eva Maria"]
[Result "1/2-1/2"]
[ECO "C50"]
[WhiteElo "826"]
[BlackElo "848"]
[PlyCount "49"]
[EventDate "2007.05.26"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "CBM 118 Extra"]
[Source "ChessBase"]
[SourceDate "2007.07.04"]
[SourceVersion "1"]
[SourceVersionDate "2007.07.04"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. 0-0 Nf6 5. Nc3 d6 6. h3 0-0 7. d3 Bd7 8. Bg5 h6 9. Bxf6 Qxf6 10. Bd5 Rad8 11. Nb5 a6 12. Nc3 Qg6 13. g4 h5 14. Nh2 Kh8 15. Kh1 Ne7 16. Bxb7 Qg5 17. Bxa6 Bc6 18. Nf3 Qg6 19. Rg1 Bxf2 20. gxh5 Qxh5 21. Rg2 Bb6 22. Rg4 Qxh3+ 23. Nh2 d5 24. Qe1 Kg8 25. Rh4 1/2-1/2

[Event "GER-ch U10"]
[Site "Willingen"]
[Date "2007.06.01"]
[Round "11"]
[White "Nobis, Anna"]
[Black "Klesen, Jonas"]
[Result "0-1"]
[ECO "C28"]
[WhiteElo "969"]
[BlackElo "826"]
[PlyCount "74"]
[EventDate "2007.05.26"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "CBM 118 Extra"]
[Source "ChessBase"]
[SourceDate "2007.07.04"]
[SourceVersion "1"]
[SourceVersionDate "2007.07.04"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Nc3 Bb4 4. Bc4 0-0 5. d3 Nc6 6. Bg5 h6 7. Bh4 d6 8. a3 Ba5 9. Qe2 Bg4 10. h3 Nd4 11. Qe3 Nxc2+ 12. Kd1 Nxe3+ 13. fxe3 Bxf3+ 14. gxf3 Bxc3 15. bxc3 g5 16. Bf2 Kh8 17. h4 g4 18. fxg4 Nxg4 19. Bg1 Rg8 20. Bxf7 Rg7 21. Bh5 Nf6 22. Bf3 c5 23. d4 Qa5 24. Kd2 Rg3 25. dxe5 dxe5 26. Be2 Nxe4+ 27. Kd3 Nxc3 28. Bf2 Rg2 29. Be1 Rxe2 30. Bxc3 Qa6+ 31. Ke4 Qc4+ 32. Kf3 Kh7 33. Bxe5 Rf8+ 34. Bf4 Qd3 35. Kg3 c4 36. Rhd1 Qg6+ 37. Kf3 Qg2# 0-1

[Event "GER-ch U10"]
[Site "Willingen"]
[Date "2007.06.01"]
[Round "9"]
[White "Sadjjadi, Anahita"]
[Black "Klesen, Jonas"]
[Result "1-0"]
[ECO "C42"]
[WhiteElo "765"]
[BlackElo "826"]
[PlyCount "61"]
[EventDate "2007.05.26"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "CBM 118 Extra"]
[Source "ChessBase"]
[SourceDate "2007.07.04"]
[SourceVersion "1"]
[SourceVersionDate "2007.07.04"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Nc3 Bc5 4. Be2 d6 5. Ng5 Nc6 6. Bc4 0-0 7. d3 h6 8. Nf3 Be6 9. Bxe6 fxe6 10. 0-0 d5 11. Be3 d4 12. Na4 dxe3 13. Nxc5 Ng4 14. Nxe6 Qf6 15. Nxf8 Rxf8 16. Qe2 Qf4 17. g3 Qf7 18. fxe3 Qh5 19. Rac1 Nb4 20. d4 Rxf3 21. Rxf3 exd4 22. Rf5 Qh3 23. Rf4 h5 24. exd4 Nc6 25. e5 g5 26. Qc4+ Kh7 27. Qf7+ Kh8 28. Qe8+ Kh7 29. Rf7+ Kg6 30. Qe6+ Nf6 31. Qxf6# 1-0

[Event "GER-ch U10"]
[Site "Willingen"]
[Date "2007.05.30"]
[Round "8"]
[White "Klesen, Jonas"]
[Black "Petermann, Tessa"]
[Result "0-1"]
[ECO "C55"]
[WhiteElo "826"]
[BlackElo "931"]
[PlyCount "80"]
[EventDate "2007.05.26"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "CBM 118 Extra"]
[Source "ChessBase"]
[SourceDate "2007.07.04"]
[SourceVersion "1"]
[SourceVersionDate "2007.07.04"]
[SourceQuality "1"]

1. e4 e5 2. Bc4 Nc6 3. Nf3 Nf6 4. Nc3 Be7 5. d3 0-0 6. Be3 d6 7. h3 Be6 8. Bb3 Bxb3 9. axb3 d5 10. 0-0 d4 11. Nd5 dxe3 12. fxe3 Nxd5 13. exd5 Qxd5 14. c4 Qc5 15. Qe2 Rfe8 16. Rad1 Rad8 17. Qf2 f6 18. d4 exd4 19. exd4 Qf5 20. d5 Nb4 21. Qh4 Bc5+ 22. Kh2 Re4 23. Nd4 Qe5+ 24. Qg3 Qxg3+ 25. Kxg3 Rxd4 26. Rxd4 Bxd4 27. Rb1 Re8 28. Kf4 Nd3+ 29. Kf3 Nxb2 30. Rc1 Re3+ 31. Kg4 Rxb3 32. Re1 a5 33. Re8+ Kf7 34. Ra8 a4 35. Kf4 Re3 36. h4 a3 37. g4 g6 38. g5 fxg5+ 39. hxg5 Nxc4 40. Ra6 bxa6 0-1

[Event "GER-ch U10"]
[Site "Willingen"]
[Date "2007.05.30"]
[Round "7"]
[White "Klesen, Jonas"]
[Black "Schwarz, Larissa"]
[Result "1/2-1/2"]
[ECO "B50"]
[WhiteElo "826"]
[BlackElo "883"]
[PlyCount "111"]
[EventDate "2007.05.26"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "CBM 118 Extra"]
[Source "ChessBase"]
[SourceDate "2007.07.04"]
[SourceVersion "1"]
[SourceVersionDate "2007.07.04"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 d6 3. Nf3 Nf6 4. Bc4 e6 5. 0-0 Be7 6. d3 0-0 7. Bg5 Re8 8. Qd2 d5 9. Bb5 Nc6 10. Ne5 Nxe4 11. dxe4 Bxg5 12. Qe2 Bd7 13. Qh5 Nxe5 14. f4 Bxf4 15. Rxf4 Ng6 16. Rf3 Qh4 17. Qxh4 Nxh4 18. Bxd7 Nxf3+ 19. gxf3 Red8 20. Bb5 dxe4 21. Nxe4 Rac8 22. c4 f5 23. Ng5 h6 24. Nxe6 Rd2 25. Rb1 Rc2 26. a4 a6 27. Bd7 Rb8 28. b4 cxb4 29. Rxb4 Rc1+ 30. Kg2 a5 31. Rb5 Rxc4 32. Rxa5 b6 33. Rxf5 Rc2+ 34. Kg3 Rc1 35. Rb5 Rb7 36. Be8 Re1 37. Bc6 Re7 38. Rxb6 R1xe6 39. Bd5 Kf7 40. a5 Ra7 41. Rb7+ Rxb7 42. Bxb7 Re1 43. a6 Ra1 44. Kf2 g5 45. Ke3 Kf6 46. Kd4 Ra5 47. Kc4 h5 48. Kb4 Ra1 49. Kb5 Kf5 50. Kb6 g4 51. a7 Kf4 52. fxg4 hxg4 53. Bg2 g3 54. hxg3+ Kxg3 55. a8Q Rxa8 56. Bxa8 1/2-1/2

[Event "GER-ch U10"]
[Site "Willingen"]
[Date "2007.05.29"]
[Round "6"]
[White "Huebner, Sanne"]
[Black "Klesen, Jonas"]
[Result "0-1"]
[ECO "C27"]
[BlackElo "826"]
[PlyCount "52"]
[EventDate "2007.05.26"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "CBM 118 Extra"]
[Source "ChessBase"]
[SourceDate "2007.07.04"]
[SourceVersion "1"]
[SourceVersionDate "2007.07.04"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Nc3 Bc5 4. Bc4 d6 5. 0-0 Bg4 6. d3 h6 7. h3 Bxf3 8. Qxf3 Nc6 9. Bd2 0-0 10. Bb5 Nd4 11. Qe3 Nxc2 12. Qe2 Nxa1 13. Rxa1 d5 14. Na4 Bd4 15. exd5 Nxd5 16. Qg4 Qf6 17. Qe4 Qxf2+ 18. Kh2 Qxd2 19. Qxd5 c6 20. Qf3 cxb5 21. Rf1 bxa4 22. Qg4 Qxb2 23. Rf3 Qa1 24. h4 Rac8 25. Rg3 Qg1+ 26. Kh3 Qh1# 0-1

[Event "GER-ch U10"]
[Site "Willingen"]
[Date "2007.05.28"]
[Round "5"]
[White "Klesen, Jonas"]
[Black "Falk, Frederike"]
[Result "0-1"]
[ECO "C50"]
[WhiteElo "826"]
[BlackElo "811"]
[PlyCount "76"]
[EventDate "2007.05.26"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "CBM 118 Extra"]
[Source "ChessBase"]
[SourceDate "2007.07.04"]
[SourceVersion "1"]
[SourceVersionDate "2007.07.04"]
[SourceQuality "1"]

1. e4 e5 2. Bc4 Nc6 3. Nf3 Bc5 4. Nc3 Nf6 5. d3 h6 6. 0-0 0-0 7. Be3 Bb4 8. Qd2 d6 9. h3 Bxc3 10. Qxc3 Be6 11. Bb3 Bxb3 12. axb3 Qd7 13. Rfd1 Qe7 14. Rd2 a6 15. d4 exd4 16. Nxd4 Nxd4 17. Bxd4 Nxe4 18. Qe3 Rae8 19. Re2 Nf6 20. Qg3 Qxe2 21. Bxf6 g6 22. h4 Kh7 23. Ra5 Rg8 24. Bg5 Qd1+ 25. Kh2 Re1 26. Kh3 Re4 27. f3 Qh1+ 28. Qh2 Qxh2+ 29. Kxh2 Ree8 30. Ra1 hxg5 31. hxg5 Re6 32. g4 Kg7 33. f4 Rh8+ 34. Kg3 Rhe8 35. f5 Re2 36. Rf1 Re1 37. Rf2 Rg1+ 38. Kh2 Ra1 0-1

[Event "GER-ch U10"]
[Site "Willingen"]
[Date "2007.05.28"]
[Round "3"]
[White "Klesen, Jonas"]
[Black "Herbst, Timothy"]
[Result "0-1"]
[ECO "B50"]
[WhiteElo "826"]
[BlackElo "1002"]
[PlyCount "56"]
[EventDate "2007.05.26"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "CBM 118 Extra"]
[Source "ChessBase"]
[SourceDate "2007.07.04"]
[SourceVersion "1"]
[SourceVersionDate "2007.07.04"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 d6 3. Nf3 Nc6 4. Bc4 Nf6 5. Ng5 e6 6. d3 Be7 7. 0-0 0-0 8. Bb5 Bd7 9. Bxc6 Bxc6 10. d4 cxd4 11. Qxd4 a6 12. e5 dxe5 13. Qxe5 Bd6 14. Qe2 Qc7 15. g3 Bb4 16. Bd2 Bxc3 17. Bxc3 Bb5 18. Qd1 Rad8 19. Qf3 Bxf1 20. Kxf1 Qc4+ 21. Kg1 Qd5 22. Qe2 Qxg5 23. Bb4 Rfe8 24. Qf3 Qb5 25. a3 Qd5 26. Qxd5 Nxd5 27. Rd1 Nxb4 28. axb4 Rxd1+ 0-1

[Event "GER-ch U10"]
[Site "Willingen"]
[Date "2007.05.28"]
[Round "4"]
[White "Klich, Jana"]
[Black "Klesen, Jonas"]
[Result "1-0"]
[ECO "A45"]
[WhiteElo "886"]
[BlackElo "826"]
[PlyCount "63"]
[EventDate "2007.05.26"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "CBM 118 Extra"]
[Source "ChessBase"]
[SourceDate "2007.07.04"]
[SourceVersion "1"]
[SourceVersionDate "2007.07.04"]
[SourceQuality "1"]

1. d4 Nf6 2. Nc3 Nc6 3. Bf4 d6 4. Nf3 Bf5 5. e3 a6 6. Bc4 e6 7. Qd2 Be7 8. 0-0 0-0 9. a3 d5 10. Bd3 Bg6 11. Bxg6 fxg6 12. Ne5 a5 13. Nxc6 bxc6 14. Rfe1 Rb8 15. b3 c5 16. dxc5 Bxc5 17. Na4 Bb6 18. Nxb6 cxb6 19. Bxb8 Qxb8 20. h3 Ne4 21. Qe2 Rxf2 22. Qd3 Rd2 23. Qb5 Rxc2 24. Rac1 Nd6 25. Qd7 Rd2 26. Qxe6+ Kh8 27. Rcd1 Rc2 28. Rxd5 Qf8 29. Rf1 Qd8 30. Qxd6 Qg5 31. Qd8+ Qxd8 32. Rxd8# 1-0

[Event "GER-ch U10"]
[Site "Willingen"]
[Date "2007.05.27"]
[Round "2"]
[White "Gayday, Alina"]
[Black "Klesen, Jonas"]
[Result "1-0"]
[ECO "C50"]
[WhiteElo "1024"]
[BlackElo "826"]
[PlyCount "51"]
[EventDate "2007.05.26"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "CBM 118 Extra"]
[Source "ChessBase"]
[SourceDate "2007.07.04"]
[SourceVersion "1"]
[SourceVersionDate "2007.07.04"]
[SourceQuality "1"]

1. e4 e5 2. Nc3 Nc6 3. Bc4 Bc5 4. Nf3 Nf6 5. 0-0 d6 6. h3 Be6 7. Bb3 Nd4 8. d3 h6 9. Nxd4 exd4 10. Nd5 c6 11. Nf4 d5 12. exd5 cxd5 13. Ba4+ Bd7 14. Re1+ Be7 15. Bb3 Bc6 16. Qe2 Bd7 17. Bxd5 Nxd5 18. Nxd5 Be6 19. Nf4 0-0 20. Nxe6 fxe6 21. Qxe6+ Rf7 22. Qg6 Bb4 23. Re4 Rc8 24. Bxh6 Bf8 25. Bg5 Qd5 26. Rh4 1-0

[Event "GER-ch U10"]
[Site "Willingen"]
[Date "2007.05.26"]
[Round "1"]
[White "Schoepe, Tobias"]
[Black "Klesen, Jonas"]
[Result "1-0"]
[ECO "C50"]
[WhiteElo "1239"]
[BlackElo "826"]
[PlyCount "37"]
[EventDate "2007.05.26"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "CBM 118 Extra"]
[Source "ChessBase"]
[SourceDate "2007.07.04"]
[SourceVersion "1"]
[SourceVersionDate "2007.07.04"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Nc3 Nc6 4. Bc4 Bc5 5. 0-0 0-0 6. a3 a6 7. d3 d6 8. h3 h6 9. Be3 Bd4 10. Bxd4 Nxd4 11. Nxd4 exd4 12. Ne2 b5 13. Bb3 Bb7 14. Nxd4 c5 15. Nf5 h5 16. Qd2 Nh7 17. Qf4 Qf6 18. Qxd6 Qxb2 19. Qxc5 1-0

[Event "Saarbruecken-ch U10"]
[Site "Ostertal"]
[Date "2006.10.21"]
[Round "?"]
[White "Klesen, Jonas"]
[Black "Schier, Lukas"]
[Result "1-0"]
[ECO "C50"]
[PlyCount "81"]
[EventDate "2006.10.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2008"]
[Source "ChessBase"]
[SourceDate "2007.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Bc5 3. Bc4 Nc6 4. 0-0 Nf6 5. Nc3 Ng4 6. d3 Bxf2+ 7. Rxf2 Nxf2 8. Kxf2 0-0 9. Bg5 Qe8 10. Nh4 h6 11. Bd2 Na5 12. Ng6 Nxc4 13. Nxf8 Nxd2 14. Qxd2 Kxf8 15. Nd5 c6 16. Nc7 Qd8 17. Nxa8 b6 18. Qb4+ c5 19. Qb5 Bb7 20. Nxb6 axb6 21. Rd1 Bc6 22. Qc4 b5 23. Qxc5+ Ke8 24. Qxe5+ Kf8 25. d4 f6 26. Qc5+ Kf7 27. d5 d6 28. dxc6 Qc7 29. Qxd6 Qxd6 30. Rxd6 Ke7 31. Rd1 g5 32. c7 Ke6 33. c8Q+ Ke5 34. Qe8+ Kf4 35. Rd3 f5 36. exf5 Kxf5 37. Qf8+ Kg6 38. Qf3 b4 39. Rd6+ Kg7 40. Qb7+ Kf8 41. Rd8# 1-0

[Event "Saarbruecken-ch U10"]
[Site "Ostertal"]
[Date "2006.10.20"]
[Round "?"]
[White "Buttgereit, Vincent"]
[Black "Klesen, Jonas"]
[Result "1-0"]
[ECO "C55"]
[PlyCount "99"]
[EventDate "2006.10.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2008"]
[Source "ChessBase"]
[SourceDate "2007.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Nc3 Nc6 4. Bc4 Bb4 5. Ng5 0-0 6. Bxf7+ Kh8 7. Bb3 Bxc3 8. Nf7+ Kg8 9. Nxd8+ Kh8 10. Nf7+ Kg8 11. Ng5+ Kh8 12. dxc3 d6 13. 0-0 Bg4 14. Qd3 Rad8 15. Nf7+ Kg8 16. Nxd8+ Kh8 17. Nf7+ Kg8 18. Ng5+ Kh8 19. Qc4 Na5 20. Qe6 Bxe6 21. Nxe6 Rc8 22. Ba4 Nc4 23. Bg5 Nxe4 24. Bd7 Rg8 25. Be7 Nxb2 26. Rab1 Nc4 27. Rb4 Ned2 28. Rd1 Nb6 29. Rxd2 Nxd7 30. Rxb7 Re8 31. Nxc7 Rxe7 32. Rxa7 Nb6 33. Rxd6 h6 34. Rxb6 Kh7 35. Rbb7 Kg6 36. Nd5 Re6 37. Rxg7+ Kf5 38. Raf7+ Ke4 39. c4 Kd4 40. Re7 Rd6 41. Rd7 Rc6 42. Nb4+ Kc5 43. Nxc6 Kxc6 44. a4 Kc5 45. Rb7 Kc6 46. a5 Kc5 47. a6 Kxc4 48. a7 Kc5 49. a8Q Kc6 50. Qc8+ 1-0

[Event "Saarbruecken-ch U10"]
[Site "Ostertal"]
[Date "2006.10.20"]
[Round "?"]
[White "Dickmann, Christopher"]
[Black "Klesen, Jonas"]
[Result "0-1"]
[ECO "C49"]
[PlyCount "148"]
[EventDate "2006.10.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2008"]
[Source "ChessBase"]
[SourceDate "2007.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.25"]
[SourceQuality "1"]

1. Nf3 Nf6 2. Nc3 Nc6 3. e4 e5 4. Bb5 Bb4 5. 0-0 0-0 6. Bxc6 bxc6 7. a3 Bxc3 8. dxc3 Ba6 9. c4 Bxc4 10. Re1 d5 11. exd5 Bxd5 12. Bg5 e4 13. Ne5 Re8 14. Bxf6 Qxf6 15. Ng4 Qxb2 16. Rb1 Qxa3 17. Ra1 Qc3 18. Re3 Qc5 19. Qd2 Red8 20. Ra5 Qe7 21. Re1 Be6 22. Nh6+ gxh6 23. Qe3 Bd5 24. Qg3+ Kf8 25. Qg4 Qb4 26. Raa1 Qb2 27. Rf1 Bc4 28. Rfb1 Qxc2 29. Rc1 Qd3 30. Rd1 Qe2 31. Re1 Qd3 32. Red1 Qe2 33. Rxd8+ Rxd8 34. Qxe2 Bxe2 35. Re1 Rd1 36. Rxd1 Bxd1 37. g3 Bf3 38. h4 Ke7 39. Kf1 Ke6 40. Ke1 Kd5 41. Kd2 Kd4 42. h5 Ke5 43. g4 f5 44. gxf5 Kxf5 45. Ke3 a5 46. Kd2 a4 47. Kc2 a3 48. Kb3 Kf4 49. Kxa3 e3 50. fxe3+ Kxe3 51. Kb4 Kd2 52. Kc5 Bxh5 53. Kxc6 Bf3+ 54. Kc5 h5 55. Kd4 h4 56. Ke5 c5 57. Kf4 Be2 58. Kg5 h3 59. Kh4 h2 60. Kg3 h1R 61. Kf4 c4 62. Ke4 Bf3+ 63. Kd4 c3 64. Kc4 c2 65. Kb3 c1R 66. Kb2 Rh2 67. Kb3 Bh1 68. Kb2 Kd1+ 69. Kb3 Kd2 70. Kb2 Rc3 71. Kb1 Be4+ 72. Kb2 Rh6 73. Ka2 Kc2 74. Ka1 Ra3# 0-1

[Event "Saarbruecken-ch U10"]
[Site "Ostertal"]
[Date "2006.10.20"]
[Round "?"]
[White "Klesen, Jonas"]
[Black "Keller, Tobias"]
[Result "1-0"]
[ECO "C61"]
[PlyCount "59"]
[EventDate "2006.10.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2008"]
[Source "ChessBase"]
[SourceDate "2007.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nd4 4. Nxd4 exd4 5. 0-0 Nf6 6. d3 Bc5 7. Bc4 0-0 8. e5 Ne8 9. c3 d5 10. Bb5 c6 11. Ba4 dxc3 12. Nxc3 d4 13. Ne4 Bb6 14. Bg5 Qd5 15. Be7 Qxe5 16. Bxf8 Kxf8 17. g3 Ba5 18. f4 Qd5 19. Ng5 g6 20. Nf3 Bh3 21. Rf2 Nf6 22. Qb3 Qh5 23. Ne5 Nd5 24. Re1 Bxe1 25. Rc2 f6 26. Qxb7 Rc8 27. Bxc6 fxe5 28. fxe5 Qxe5 29. Bxd5 Rxc2 30. Qf7# 1-0

[Event "Saarbruecken-ch U10"]
[Site "Ostertal"]
[Date "2006.10.18"]
[Round "?"]
[White "Hess, Sophie"]
[Black "Klesen, Jonas"]
[Result "1-0"]
[ECO "C47"]
[PlyCount "33"]
[EventDate "2006.10.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2008"]
[Source "ChessBase"]
[SourceDate "2007.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Nc3 Nc6 4. d3 Bc5 5. Bg5 0-0 6. Be2 d6 7. 0-0 Bg4 8. Bxf6 gxf6 9. Ne1 Bxe2 10. Qxe2 Bd4 11. Rb1 Bxc3 12. bxc3 b6 13. Nf3 Rb8 14. Nh4 b5 15. Nf5 b4 16. Qg4+ Kh8 17. Qg7# 1-0

[Event "Saarbruecken-ch U10"]
[Site "Ostertal"]
[Date "2006.10.18"]
[Round "?"]
[White "Klesen, Jonas"]
[Black "Mueller, Max Ferdinand"]
[Result "1-0"]
[ECO "C42"]
[PlyCount "15"]
[EventDate "2006.10.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2008"]
[Source "ChessBase"]
[SourceDate "2007.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Bc4 Nf6 3. Nf3 Nxe4 4. Qe2 Bc5 5. Qxe4 Nc6 6. Nxe5 0-0 7. Bd3 Nxe5 8. Qxh7# 1-0

[Event "Saarbruecken-ch U10"]
[Site "Ostertal"]
[Date "2006.10.17"]
[Round "?"]
[White "Klesen, Jonas"]
[Black "Lin, Heiko"]
[Result "1-0"]
[ECO "C25"]
[PlyCount "25"]
[EventDate "2006.10.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2008"]
[Source "ChessBase"]
[SourceDate "2007.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nc3 Nc6 3. Bc4 f5 4. Nf3 Bd6 5. 0-0 Nge7 6. d3 a6 7. Ng5 Na5 8. Nf7 Rf8 9. Nxd8 Kxd8 10. exf5 Nxf5 11. Bg5+ Ke8 12. Qh5+ Rf7 13. Qxf7# 1-0

