[Event "Mecklenburg VP-ch Youth"]
[Site "Malchow"]
[Date "2017.02.16"]
[Round "4.6"]
[White "Altenstein, Jonas"]
[Black "Elsken Sicard, Fabian"]
[Result "1-0"]
[ECO "B22"]
[WhiteElo "1460"]
[BlackElo "1304"]
[PlyCount "67"]
[EventDate "2017.02.08"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c5 2. c3 e6 3. d4 cxd4 4. cxd4 Be7 5. Nc3 a6 6. Nf3 d6 7. Bd3 Nf6 8. 0-0 0-0 9. Be3 b5 10. Ng5 e5 11. h3 Nd5 12. exd5 Bxg5 13. Qh5 h6 14. Bxg5 Qxg5 15. Qxg5 hxg5 16. dxe5 dxe5 17. Rac1 Bb7 18. Rfe1 f6 19. Bf5 Rd8 20. Be6+ Kf8 21. Red1 Ke7 22. Ne4 f5 23. Rc7+ Nd7 24. Nxg5 Bc8 25. Nf7 Rf8 26. Bxd7 Bxd7 27. Nxe5 Kd6 28. Rxd7+ Kxe5 29. Rxg7 Rad8 30. Re7+ Kf6 31. Re6+ Kf7 32. Rxa6 Rd7 33. Rb6 Rfd8 34. Rxb5 1-0

[Event "Mecklenburg VP-ch Youth"]
[Site "Malchow"]
[Date "2017.02.16"]
[Round "2.6"]
[White "Altenstein, Jonas"]
[Black "Pusch, Lucas"]
[Result "1/2-1/2"]
[ECO "C53"]
[WhiteElo "1460"]
[BlackElo "1140"]
[PlyCount "89"]
[EventDate "2017.02.08"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 d6 5. d4 exd4 6. cxd4 Bb6 7. Be3 Nf6 8. Nbd2 0-0 9. 0-0 Qe7 10. Qc2 Bg4 11. Rfe1 Ba5 12. e5 dxe5 13. dxe5 Nxe5 14. Nxe5 Qxe5 15. Bxa7 Qd6 16. Be3 Rad8 17. f3 Bxd2 18. Bxd2 Qxd2 19. Qxd2 Rxd2 20. fxg4 Nxg4 21. Re7 Rxb2 22. Rxc7 Ne3 23. Bf1 g6 24. Re7 Nxf1 25. Rxf1 b5 26. Rb7 Kg7 27. a4 b4 28. a5 Ra2 29. Rxb4 Rxa5 30. Rb7 h6 31. h3 g5 32. g4 Kg6 33. Rb6+ f6 34. Rf3 Ra4 35. Kg2 Ra7 36. Kg3 Raf7 37. Rc6 h5 38. Kg2 h4 39. Rb6 Ra8 40. Rc6 Kg7 41. Rf5 Ra3 42. Rb6 Ra2+ 43. Kg1 Rc7 44. Rbxf6 Rc1+ 45. Rf1 1/2-1/2

[Event "Mecklenburg VP-ch Youth"]
[Site "Malchow"]
[Date "2017.02.16"]
[Round "7.5"]
[White "Altenstein, Jonas"]
[Black "Stadach, Pepe"]
[Result "1-0"]
[ECO "C54"]
[WhiteElo "1460"]
[BlackElo "1220"]
[PlyCount "43"]
[EventDate "2017.02.08"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d3 d6 6. 0-0 Be6 7. Nbd2 0-0 8. b4 Bb6 9. Bxe6 fxe6 10. Nc4 Nd7 11. Ng5 Qe8 12. Qg4 Rf6 13. Nxb6 Nxb6 14. f4 exf4 15. Rxf4 Rxf4 16. Bxf4 e5 17. Bd2 Qg6 18. Rf1 h6 19. Qe6+ Qxe6 20. Nxe6 Rc8 21. Rf3 Nd8 22. Rf8+ 1-0

[Event "Mecklenburg VP-ch Youth"]
[Site "Malchow"]
[Date "2017.02.16"]
[Round "3.8"]
[White "Jaeschke, Jonathan"]
[Black "Altenstein, Jonas"]
[Result "0-1"]
[ECO "D37"]
[WhiteElo "1206"]
[BlackElo "1460"]
[PlyCount "98"]
[EventDate "2017.02.08"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. Bf4 Nbd7 5. Nc3 Bb4 6. Rc1 0-0 7. e3 Re8 8. cxd5 Nxd5 9. Bg3 N7f6 10. Bd3 Nxc3 11. bxc3 Bd6 12. Bh4 Be7 13. e4 Nh5 14. Bg3 Nxg3 15. hxg3 c5 16. e5 h6 17. Qe2 f6 18. exf6 Bxf6 19. Qe4 cxd4 20. cxd4 Qa5+ 21. Nd2 Qf5 22. Rc4 Qxe4+ 23. Bxe4 Rb8 24. Nb3 b6 25. Kd2 Bb7 26. Bxb7 Rxb7 27. Rhc1 Ree7 28. Kd3 Kf7 29. Nd2 g5 30. g4 Rbd7 31. Ne4 e5 32. Nxf6 Kxf6 33. Rc6+ Re6 34. Rxe6+ Kxe6 35. Rc6+ Rd6 36. Ke4 Rxc6 37. d5+ Kd6 38. dxc6 Kxc6 39. Kf5 b5 40. Kg6 b4 41. Kxh6 a5 42. Kxg5 a4 43. Kf6 b3 44. axb3 axb3 45. g5 b2 46. g6 b1Q 47. g7 Qb3 48. Ke7 Qg8 49. Kf6 Kd6 0-1

[Event "Mecklenburg VP-ch Youth"]
[Site "Malchow"]
[Date "2017.02.16"]
[Round "6.3"]
[White "Lange, Jannis"]
[Black "Altenstein, Jonas"]
[Result "1-0"]
[ECO "C54"]
[WhiteElo "1843"]
[BlackElo "1460"]
[PlyCount "153"]
[EventDate "2017.02.08"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. cxd4 Bb4+ 7. Nc3 Nxe4 8. 0-0 Bxc3 9. d5 Bf6 10. Re1 Ne7 11. Rxe4 d6 12. Bg5 Bxg5 13. Nxg5 h6 14. Qe2 hxg5 15. Re1 Be6 16. dxe6 f6 17. Re3 Kf8 18. Rh3 Rxh3 19. gxh3 g6 20. h4 gxh4 21. Qg4 Kg7 22. Qxh4 Qh8 23. Qg4 Qh5 24. Qxh5 gxh5 25. Re3 f5 26. Be2 Rh8 27. Ra3 a6 28. Bf3 Nc6 29. Rc3 Kf6 30. Bxc6 bxc6 31. Rxc6 Rc8 32. Kg2 Kxe6 33. Kg3 Rg8+ 34. Kf3 Rg7 35. Rxa6 c5 36. Ra4 Rb7 37. b3 Rb4 38. Rxb4 cxb4 39. Kf4 d5 40. Ke3 Ke5 41. f4+ Ke6 42. Kd4 Kd6 43. h4 Kc6 44. Ke5 Kc5 45. Kxf5 Kd6 46. Kg6 d4 47. f5 d3 48. f6 d2 49. f7 d1Q 50. f8Q+ Kc7 51. Qc5+ Kd8 52. Qb6+ Kd7 53. Qb5+ Kd8 54. Qg5+ Kc7 55. Kh6 Qe2 56. Qxh5 Qxa2 57. Qf7+ Kb6 58. h5 Qd2+ 59. Kh7 Kc5 60. Qc7+ Kd4 61. Qd6+ Kc3 62. Qxd2+ Kxd2 63. Kg6 Kc3 64. h6 Kxb3 65. h7 Kc2 66. h8Q b3 67. Qh4 b2 68. Qc4+ Kd1 69. Qb3+ Kc1 70. Qc3+ Kb1 71. Kf5 Ka2 72. Qc4+ Ka3 73. Qc2 Ka2 74. Ke4 Ka1 75. Qa4+ Kb1 76. Kd3 Kc1 77. Qc2# 1-0

[Event "Mecklenburg VP-ch Youth"]
[Site "Malchow"]
[Date "2017.02.16"]
[Round "1.7"]
[White "Noske, Janek"]
[Black "Altenstein, Jonas"]
[Result "1-0"]
[ECO "B88"]
[WhiteElo "1132"]
[BlackElo "1460"]
[PlyCount "91"]
[EventDate "2017.02.08"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 d6 6. Bc4 Nf6 7. 0-0 Be7 8. Re1 0-0 9. Nxc6 bxc6 10. e5 dxe5 11. Rxe5 Qxd1+ 12. Nxd1 Bd6 13. Re1 Ng4 14. Ne3 Bxh2+ 15. Kh1 Nxe3 16. Bxe3 Bc7 17. Bc5 Rd8 18. Rad1 Rxd1 19. Rxd1 h5 20. Bd6 Bb6 21. Be7 Bb7 22. b4 Bxf2 23. Rd7 Rb8 24. Bd6 Rc8 25. Rxb7 Rd8 26. Rb8 Rxb8 27. Bxb8 Kf8 28. b5 cxb5 29. Bd6+ Kg8 30. Bxb5 g5 31. c4 f5 32. c5 Kf7 33. c6 Bb6 34. c7 Bxc7 35. Bxc7 Kf6 36. Bd8+ Kg6 37. Kh2 e5 38. Kg3 h4+ 39. Kf3 g4+ 40. Ke3 h3 41. gxh3 f4+ 42. Ke4 g3 43. Be8+ Kg7 44. Bh4 Kh6 45. Kxe5 g2 46. Bf2 1-0

[Event "Mecklenburg VP-ch Youth"]
[Site "Malchow"]
[Date "2017.02.16"]
[Round "5.3"]
[White "Schulz, Daniel"]
[Black "Altenstein, Jonas"]
[Result "1/2-1/2"]
[ECO "B22"]
[WhiteElo "1819"]
[BlackElo "1460"]
[PlyCount "73"]
[EventDate "2017.02.08"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. d4 cxd4 5. cxd4 d6 6. Bc4 e6 7. Nf3 Be7 8. 0-0 0-0 9. Re1 Nc6 10. Nc3 Nxc3 11. bxc3 dxe5 12. Nxe5 Nxe5 13. Rxe5 Qc7 14. Qd3 Bf6 15. Rc5 Qd8 16. Bf4 Re8 17. Re1 b6 18. Rc7 Re7 19. Rxe7 Bxe7 20. Qe4 Bd7 21. d5 Qc8 22. dxe6 Bxe6 23. Bxe6 Qxe6 24. Qxe6 fxe6 25. Rxe6 Bf6 26. Rc6 Rd8 27. Kf1 Rd7 28. Ke2 Kf7 29. a4 g6 30. f3 Rb7 31. Kd3 Ke7 32. Kc4 Rd7 33. Kb5 Rd5+ 34. Kb4 Rd7 35. c4 Bd4 36. Kb5 Bc5 37. Bg5+ 1/2-1/2

[Event "Mecklenburg VP LL 1617"]
[Site "Mecklenburg VP"]
[Date "2016.12.04"]
[Round "4.7"]
[White "Staben, Norbert"]
[Black "Altenstein, Jonas"]
[Result "1-0"]
[ECO "D38"]
[WhiteElo "1689"]
[BlackElo "1460"]
[PlyCount "107"]
[EventDate "2016.10.16"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]
[WhiteTeam "Warnemuende SF Ostsee"]
[BlackTeam "Greifswald II"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 Bb4 5. a3 Bxc3+ 6. bxc3 Nbd7 7. e3 0-0 8. Bd3 dxc4 9. Bxc4 Nb6 10. Bd3 Bd7 11. Ne5 Ba4 12. Qe2 Nbd5 13. Bd2 Rc8 14. Bb5 Bxb5 15. Qxb5 Nb6 16. 0-0 Ne4 17. Rfd1 Qg5 18. Qd3 Qf5 19. f3 Nd6 20. e4 Qf6 21. c4 c5 22. dxc5 Qxe5 23. cxb6 axb6 24. Bb4 Nxc4 25. Bxf8 Nb2 26. Qd4 Qxd4+ 27. Rxd4 Kxf8 28. Rd7 Rb8 29. Rc1 f5 30. e5 Na4 31. Rcc7 Nc5 32. Rf7+ Ke8 33. Rxg7 Kf8 34. Rxh7 Kg8 35. h4 Rd8 36. Rhe7 Kf8 37. h5 Nd3 38. Rxe6 Nf4 39. Rf6+ Kg8 40. Rxf5 Ne6 41. Rxb7 Re8 42. Rxb6 Kh7 43. g4 Kg8 44. f4 Kg7 45. Rxe6 Rxe6 46. Rf6 Re8 47. Ra6 Kh8 48. Ra7 Rg8 49. g5 Rf8 50. Ra4 Rd8 51. Kg2 Rd2+ 52. Kf3 Rd3+ 53. Ke4 Rd8 54. Ra7 1-0

[Event "Mecklenburg VP LL 1617"]
[Site "Mecklenburg VP"]
[Date "2016.10.16"]
[Round "1.7"]
[White "Altenstein, Jonas"]
[Black "Emmrich, Olaf"]
[Result "1/2-1/2"]
[ECO "B07"]
[WhiteElo "1460"]
[BlackElo "1767"]
[PlyCount "50"]
[EventDate "2016.10.16"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]
[WhiteTeam "Greifswald II"]
[BlackTeam "Ludwigslust VT 2000"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 d6 2. d4 Nf6 3. Nc3 c6 4. Bg5 Nbd7 5. Nf3 h6 6. Bh4 Qa5 7. Bd3 e5 8. 0-0 Be7 9. Qe2 Qb4 10. dxe5 Nxe5 11. Nxe5 dxe5 12. Bxf6 Bxf6 13. Rab1 0-0 14. Rfd1 Be6 15. a3 Qa5 16. Bc4 Bxc4 17. Qxc4 Rad8 18. Ne2 Rxd1+ 19. Rxd1 Rd8 20. Rxd8+ Qxd8 21. h3 Qd1+ 22. Kh2 Qf1 23. f3 Bg5 24. Qd3 Qf2 25. b3 g6 1/2-1/2

[Event "Mecklenburg VP U14"]
[Site "Malchow"]
[Date "2016.02.02"]
[Round "7.2"]
[White "Altenstein, Jonas"]
[Black "Gazizov, Max"]
[Result "1-0"]
[ECO "B22"]
[WhiteElo "1444"]
[BlackElo "1418"]
[PlyCount "39"]
[EventDate "2016.02.02"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 c5 2. c3 d6 3. d4 cxd4 4. cxd4 Nf6 5. Nc3 a6 6. Nf3 g6 7. h3 Bg7 8. Be3 0-0 9. Bd3 Nfd7 10. 0-0 e5 11. dxe5 dxe5 12. Qd2 Nb6 13. Rad1 Qd6 14. Bh6 Be6 15. Bxg7 Kxg7 16. Qe3 f6 17. Bc4 Nxc4 18. Rxd6 Nxe3 19. fxe3 Kf7 20. Ng5+ 1-0

[Event "Mecklenburg VP U14"]
[Site "Malchow"]
[Date "2016.02.02"]
[Round "1.3"]
[White "Altenstein, Jonas"]
[Black "Rosenhahn, Nico"]
[Result "1-0"]
[ECO "C02"]
[WhiteElo "1444"]
[BlackElo "1086"]
[PlyCount "71"]
[EventDate "2016.02.02"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 e6 2. Nf3 d5 3. e5 c5 4. d4 Qb6 5. Nc3 a6 6. Rb1 Nc6 7. Be3 Nh6 8. Na4 Qb4+ 9. c3 Qa5 10. dxc5 Rb8 11. Bd3 Ng4 12. b4 Qc7 13. Bd4 Ngxe5 14. Nxe5 Nxe5 15. Be2 Bd7 16. Nb6 Bb5 17. Bxb5+ axb5 18. Qe2 f6 19. Qxb5+ Qc6 20. Qe2 Nc4 21. b5 Qc7 22. Nxd5 Qd7 23. Nxf6+ gxf6 24. Qxc4 e5 25. Be3 Rd8 26. 0-0 Qg7 27. Qe6+ Be7 28. c6 Rg8 29. g3 f5 30. c7 Rd6 31. c8Q+ Rd8 32. Qed7+ Kf7 33. Qxf5+ Ke8 34. Qxb7 Rf8 35. Qc6+ Rd7 36. Qcxd7# 1-0

[Event "Mecklenburg VP U14"]
[Site "Malchow"]
[Date "2016.02.02"]
[Round "5.1"]
[White "Altenstein, Jonas"]
[Black "Wurst, Benedikt"]
[Result "1/2-1/2"]
[ECO "C45"]
[WhiteElo "1444"]
[BlackElo "1648"]
[PlyCount "73"]
[EventDate "2016.02.02"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Bc5 5. Be3 Bxd4 6. Bxd4 Nxd4 7. Qxd4 Qf6 8. c3 d6 9. Bd3 Qxd4 10. cxd4 Nf6 11. 0-0 0-0 12. Nc3 Bd7 13. Rae1 Rae8 14. f4 h6 15. e5 dxe5 16. dxe5 Nh7 17. h3 c6 18. Ne4 Bf5 19. g4 Bxe4 20. Bxe4 f6 21. Bg6 Re6 22. Bf5 Re7 23. e6 g5 24. Bxh7+ Kxh7 25. f5 Rd8 26. Rd1 Ree8 27. Kg2 Kg7 28. Kf3 Kf8 29. Ke2 Ke7 30. Rxd8 Rxd8 31. Rd1 Rxd1 32. Kxd1 a5 33. Kc2 b6 34. Kc3 Kd6 35. Kc4 Kc7 36. a3 Kd6 37. b3 1/2-1/2

[Event "Mecklenburg VP U14"]
[Site "Malchow"]
[Date "2016.02.02"]
[Round "3.2"]
[White "Altenstein, Jonas"]
[Black "Yevtushenko, Yaroslav"]
[Result "1-0"]
[ECO "B22"]
[WhiteElo "1444"]
[BlackElo "2116"]
[PlyCount "157"]
[EventDate "2016.02.02"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 c5 2. c3 d6 3. d4 cxd4 4. cxd4 Nf6 5. Nc3 g6 6. Bg5 Bg7 7. Bb5+ Bd7 8. Bxd7+ Qxd7 9. Nf3 Nc6 10. Qd2 0-0 11. 0-0 Rfd8 12. Rfd1 Qc7 13. Rac1 Rab8 14. Bxf6 exf6 15. Qe3 Re8 16. d5 Ne5 17. Nxe5 fxe5 18. Nb5 Qd7 19. Qd3 a6 20. Nc3 Rbc8 21. Rc2 Rc5 22. Rdd2 Rec8 23. Ne2 Qc7 24. Rxc5 Qxc5 25. Qc3 Bh6 26. Rc2 b6 27. Qxc5 bxc5 28. Rc3 Rb8 29. b3 a5 30. h3 f5 31. Ng3 fxe4 32. Nxe4 Rb6 33. h4 Bf8 34. Kf1 Rb4 35. f3 h5 36. Ke2 Kg7 37. g3 Be7 38. Rc4 Kf8 39. Rxb4 axb4 40. Kd2 Kf7 41. Kc2 Ke8 42. Kb2 Kd7 43. a3 bxa3+ 44. Kxa3 Bd8 45. b4 cxb4+ 46. Kxb4 Bb6 47. Kc3 Bc5 48. Kc4 Bb6 49. Kd3 Ba5 50. Ke2 Bb6 51. g4 Bd8 52. g5 Be7 53. Ke3 Bf8 54. Ke2 Kc7 55. Ke3 Kb6 56. Nf6 Kc5 57. Nd7+ Kxd5 58. Nxf8 Kc4 59. Nxg6 Kd5 60. Ne7+ Ke6 61. Nc6 Kf5 62. Nb4 Ke6 63. Ke4 Kf7 64. Kf5 Kg7 65. Ke6 Kg6 66. Nd5 Kg7 67. Kxd6 Kg6 68. Kxe5 Kg7 69. f4 Kg8 70. Nf6+ Kg7 71. Nxh5+ Kg6 72. f5+ Kh7 73. g6+ Kh8 74. g7+ Kh7 75. f6 Kg8 76. Ke6 Kh7 77. f7 Kh6 78. g8Q Kxh5 79. Qg5# 1-0

[Event "Mecklenburg VP U14"]
[Site "Malchow"]
[Date "2016.02.02"]
[Round "6.2"]
[White "Eulitz, Charlotte"]
[Black "Altenstein, Jonas"]
[Result "1-0"]
[ECO "C54"]
[WhiteElo "1457"]
[BlackElo "1444"]
[PlyCount "75"]
[EventDate "2016.02.02"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. cxd4 Bb4+ 7. Bd2 Nxe4 8. Bxf7+ Kxf7 9. Bxb4 Nxb4 10. Qb3+ d5 11. Qxb4 Ke6 12. 0-0 Qd6 13. Qb3 Re8 14. Re1 Kf7 15. Ne5+ Kg8 16. Rxe4 Be6 17. Re1 Qb6 18. Qxb6 axb6 19. Nc3 c5 20. Nf3 Bf7 21. Rxe8+ Rxe8 22. Rd1 cxd4 23. Rxd4 g6 24. h3 Kg7 25. b3 Rc8 26. Nxd5 Rc1+ 27. Kh2 Rc2 28. Nxb6 Rxf2 29. Rd2 Rf1 30. Rd7 Rf2 31. Rxb7 Rxa2 32. Ne5 Rf2 33. Rxf7+ Rxf7 34. Nxf7 Kxf7 35. Kg3 Ke6 36. Kg4 h6 37. h4 Ke5 38. Nd7+ 1-0

[Event "Mecklenburg VP U14"]
[Site "Malchow"]
[Date "2016.02.02"]
[Round "4.1"]
[White "Lange, Jannis"]
[Black "Altenstein, Jonas"]
[Result "1/2-1/2"]
[ECO "D05"]
[WhiteElo "1738"]
[BlackElo "1444"]
[PlyCount "93"]
[EventDate "2016.02.02"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. e3 e6 4. Bd3 Bd6 5. Nbd2 Nbd7 6. c3 c5 7. 0-0 0-0 8. e4 dxe4 9. Nxe4 Nxe4 10. Bxe4 Nf6 11. Bg5 cxd4 12. Bxf6 Qxf6 13. cxd4 Re8 14. Qd3 Qh6 15. Qb5 Re7 16. Qg5 Bxh2+ 17. Kh1 Bf4+ 18. Qxh6 Bxh6 19. Ne5 Rb8 20. f4 g6 21. Rac1 Bg7 22. Rc2 f6 23. Rfc1 Bd7 24. Nd3 Bb5 25. Rc8+ Rxc8 26. Rxc8+ Kf7 27. Nc5 b6 28. Nb7 Rd7 29. Nd8+ Ke7 30. Bc6 Bxc6 31. Nxc6+ Kd6 32. Nb8 Rc7 33. Rg8 f5 34. Na6 Rc1+ 35. Kh2 Bf6 36. Rf8 Ke7 37. Ra8 Bxd4 38. Rxa7+ Kf6 39. Rxh7 Bxb2 40. Nc7 e5 41. Ne8+ Ke6 42. Rg7 Rc6 43. Rxg6+ Kd5 44. Rxc6 Kxc6 45. Ng7 exf4 46. Nxf5 Kc5 47. Kh3 1/2-1/2

[Event "Mecklenburg VP U14"]
[Site "Malchow"]
[Date "2016.02.02"]
[Round "2.2"]
[White "Puls, Luisa"]
[Black "Altenstein, Jonas"]
[Result "0-1"]
[ECO "A04"]
[WhiteElo "1246"]
[BlackElo "1444"]
[PlyCount "126"]
[EventDate "2016.02.02"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 f5 3. d3 d6 4. Nc3 Nf6 5. Be2 Nc6 6. Bg5 h6 7. Bxf6 Qxf6 8. Qd2 Be6 9. 0-0-0 0-0-0 10. Kb1 g6 11. g3 Bg7 12. Ne1 Nd4 13. f4 exf4 14. gxf4 Rhe8 15. Nf3 Nxe2 16. Qxe2 fxe4 17. dxe4 Qxf4 18. Rhg1 Bf5 19. Nd2 Bxc3 20. bxc3 Bxe4 21. Nxe4 Rxe4 22. Qd3 Qf5 23. Rg2 Rde8 24. Rdg1 Re1+ 25. Rxe1 Rxe1+ 26. Kb2 Qxd3 27. cxd3 Kd7 28. h3 g5 29. Kc2 Rh1 30. Rg3 Rh2+ 31. Kb3 Kc6 32. a3 Kd5 33. Rf3 Ke6 34. d4 Re2 35. Kc4 c6 36. Rf1 d5+ 37. Kd3 Ra2 38. Rb1 b6 39. a4 Rh2 40. Re1+ Kf6 41. Re3 Ra2 42. Rf3+ Ke7 43. Re3+ Kd7 44. Rf3 Rxa4 45. Rf6 Ra1 46. Rxh6 Kc7 47. Rh5 Rg1 48. Rh7+ Kb8 49. Ke3 Rg3+ 50. Kd2 a5 51. h4 gxh4 52. Rxh4 Kb7 53. Rh7+ Ka6 54. Rc7 Kb5 55. Kc2 c5 56. dxc5 bxc5 57. Rd7 Kc4 58. Ra7 Rxc3+ 59. Kb2 Rb3+ 60. Kc2 Rb5 61. Kd2 d4 62. Kc2 Kb4 63. Kb2 c4 0-1

[Event "Mecklenburg VP-ch U14"]
[Site "Malchow"]
[Date "2015.02.04"]
[Round "7.8"]
[White "Altenstein, Jonas"]
[Black "Troemer, Axel"]
[Result "1-0"]
[ECO "B12"]
[WhiteElo "1285"]
[BlackElo "1170"]
[PlyCount "55"]
[EventDate "2015.01.31"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c6 2. Nf3 d5 3. e5 Bf5 4. d4 e6 5. c3 c5 6. Bb5+ Nc6 7. 0-0 Qb6 8. Qa4 Nge7 9. dxc5 Qc7 10. Nd4 a6 11. Bg5 Rc8 12. Bxc6+ Nxc6 13. Nxf5 Qxe5 14. Nd6+ Bxd6 15. cxd6 Qxg5 16. Qb3 Rb8 17. Qb6 Qd8 18. Qc5 0-0 19. Re1 Qd7 20. c4 Rfd8 21. cxd5 Qxd6 22. Qxd6 Rxd6 23. dxc6 bxc6 24. b3 Rbd8 25. Nc3 Rd3 26. Ne4 g6 27. h3 Kg7 28. Nc5 1-0

[Event "Mecklenburg VP-ch U14"]
[Site "Malchow"]
[Date "2015.02.03"]
[Round "5.5"]
[White "Altenstein, Jonas"]
[Black "Beck, Jules"]
[Result "1/2-1/2"]
[ECO "C01"]
[WhiteElo "1285"]
[BlackElo "1125"]
[PlyCount "104"]
[EventDate "2015.01.31"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Bd3 Bd6 5. Nf3 Ne7 6. Bg5 f6 7. Bh4 Bf5 8. Bg3 Nbc6 9. c3 a6 10. Qc2 Qd7 11. Bxd6 cxd6 12. 0-0 0-0 13. Re1 Bxd3 14. Qxd3 Rfe8 15. Nbd2 Rac8 16. Nf1 Kh8 17. Ng3 Ng6 18. Qf5 Qc7 19. Qxd5 Nf4 20. Qf5 Ng6 21. Re4 Nce7 22. Qg4 Rf8 23. Qe6 f5 24. Ree1 Rf6 25. Qb3 Qd7 26. Ng5 Rcf8 27. Nh5 Nh4 28. Nxf6 gxf6 29. Nf7+ Kg7 30. Nxd6 Qxd6 31. Qxb7 Rf7 32. Qb3 Qc6 33. f3 Nd5 34. Qb8 Kh6 35. Qg3 Kh5 36. Qg8 Rb7 37. Re6 Qd7 38. g4+ fxg4 39. Qxg4+ Kh6 40. Qxh4+ Kg7 41. Qg4+ Kf7 42. Rxa6 Qe7 43. Qh5+ Kf8 44. Ra8+ Kg7 45. Qxd5 Qe3+ 46. Kg2 Rxb2+ 47. Kg3 Qf2+ 48. Kf4 Qxh2+ 49. Ke4 Qc2+ 50. Kf4 Qh2+ 51. Ke4 Qc2+ 52. Kf4 Qh2+ 1/2-1/2

[Event "Mecklenburg VP-ch U14"]
[Site "Malchow"]
[Date "2015.02.03"]
[Round "6.5"]
[White "Langer, Moritz"]
[Black "Altenstein, Jonas"]
[Result "1-0"]
[ECO "D39"]
[WhiteElo "1670"]
[BlackElo "1285"]
[PlyCount "37"]
[EventDate "2015.01.31"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Bb4 4. Nf3 Nf6 5. a3 Bxc3+ 6. bxc3 dxc4 7. Bg5 Qd5 8. Bxf6 gxf6 9. Nd2 f5 10. e3 b6 11. Nxc4 Ba6 12. Ne5 Bxf1 13. Kxf1 Rg8 14. Rg1 f6 15. Qh5+ Kd8 16. Qxh7 Re8 17. Qh4 Nd7 18. c4 Qd6 19. Nf7+ 1-0

[Event "Mecklenburg VP-ch U14"]
[Site "Malchow"]
[Date "2015.02.02"]
[Round "4.6"]
[White "Kunz, Nelli"]
[Black "Altenstein, Jonas"]
[Result "0-1"]
[ECO "D53"]
[WhiteElo "693"]
[BlackElo "1285"]
[PlyCount "66"]
[EventDate "2015.01.31"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. e3 0-0 6. Bd3 dxc4 7. Bxc4 Nc6 8. Nf3 b6 9. 0-0 Bb7 10. Qe2 Qd6 11. Ba6 Bxa6 12. Qxa6 e5 13. Rad1 e4 14. Nd2 Ng4 15. Bf4 Qd7 16. Ndxe4 Nb4 17. Qc4 c6 18. d5 c5 19. a3 Nxd5 20. Nxd5 b5 21. Nxc5 Bxc5 22. Qxc5 Qb7 23. Rd4 Rac8 24. Qe7 Qc6 25. Qxa7 Qc1 26. Ne7+ Kh8 27. Nxc8 Rxc8 28. Rdd1 Qxb2 29. Qd7 Rg8 30. Qxg4 Qxa3 31. Rb1 Qc5 32. Rfc1 Qa3 33. Rxb5 Qxc1+ 0-1

[Event "Mecklenburg VP-ch U14"]
[Site "Malchow"]
[Date "2015.02.01"]
[Round "3.4"]
[White "Altenstein, Jonas"]
[Black "Schumacher, Ole"]
[Result "0-1"]
[ECO "B42"]
[WhiteElo "1285"]
[BlackElo "1354"]
[PlyCount "54"]
[EventDate "2015.01.31"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. Nc3 Nf6 4. d4 cxd4 5. Nxd4 a6 6. Bd3 Nbd7 7. 0-0 e6 8. Re1 Be7 9. Nf3 Qc7 10. Bf4 e5 11. Be3 b5 12. a3 0-0 13. Qe2 Bb7 14. Rad1 Rac8 15. Rd2 Nb6 16. Bxb6 Qxb6 17. Qe3 Qc7 18. Qe2 Qd7 19. Nh4 g6 20. Qf3 Rb8 21. Qg3 Nh5 22. Qh3 Qxh3 23. gxh3 Bxh4 24. Kg2 Bg5 25. Rdd1 f5 26. f3 Bh4 27. Re3 Nf4+ 0-1

[Event "Mecklenburg VP-ch U14"]
[Site "Malchow"]
[Date "2015.02.01"]
[Round "2.2"]
[White "Schamber, Dennis"]
[Black "Altenstein, Jonas"]
[Result "1-0"]
[ECO "D31"]
[WhiteElo "1605"]
[BlackElo "1285"]
[PlyCount "63"]
[EventDate "2015.01.31"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nc6 4. Bf4 Bb4 5. e3 Nf6 6. a3 Bxc3+ 7. bxc3 0-0 8. Nf3 Ne4 9. Qc2 Bd7 10. Bd3 f5 11. 0-0 Rc8 12. cxd5 exd5 13. c4 Be6 14. c5 Qe7 15. Ne5 Nxe5 16. Bxe5 Qd7 17. Rab1 c6 18. f3 Ng5 19. Qb2 Nf7 20. Qxb7 Nxe5 21. dxe5 Rfe8 22. Qxd7 Bxd7 23. Rb7 Be6 24. Rfb1 Ra8 25. f4 h6 26. Rc7 Rec8 27. Re7 Re8 28. Rbb7 g6 29. Rg7+ Kf8 30. Rxg6 Bf7 31. Rxh6 Kg7 32. Rf6 1-0

[Event "Mecklenburg VP-ch U14"]
[Site "Malchow"]
[Date "2015.01.31"]
[Round "1.7"]
[White "Altenstein, Jonas"]
[Black "Wolfgramm, Egon"]
[Result "1-0"]
[ECO "B01"]
[WhiteElo "1285"]
[BlackElo "998"]
[PlyCount "61"]
[EventDate "2015.01.31"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qd8 4. Bc4 e6 5. Nf3 Bc5 6. d4 Bd6 7. 0-0 Nf6 8. Bg5 c5 9. dxc5 Bxc5 10. Qxd8+ Kxd8 11. Ne5 Rf8 12. Rad1+ Ke8 13. Bb5+ Bd7 14. Bxf6 gxf6 15. Bxd7+ Nxd7 16. Nxd7 Rg8 17. Nxf6+ Kf8 18. Nxg8 Kxg8 19. Rd7 b6 20. Rfd1 Be7 21. Rxe7 Kg7 22. Rdd7 Rc8 23. Rxf7+ Kg6 24. Rxh7 b5 25. Rc7 Rd8 26. h4 b4 27. Ne4 Rd1+ 28. Kh2 Ra1 29. Rxa7 Rc1 30. Raf7 Rxc2 31. h5# 1-0

[Event "Mecklenburg VP-ch U12"]
[Site "Malchow"]
[Date "2014.02.04"]
[Round "6"]
[White "Altenstein, Jonas"]
[Black "Pfennigschmidt, Lennart Ivo"]
[Result "1-0"]
[ECO "C58"]
[WhiteElo "1282"]
[BlackElo "855"]
[PlyCount "87"]
[EventDate "2014.02.01"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 d5 5. exd5 Na5 6. Bb5+ c6 7. dxc6 bxc6 8. Bd3 Bc5 9. Nc3 Ng4 10. Nge4 Qh4 11. Qf3 Bb6 12. b3 Nxh2 13. Qe2 Nf3+ 14. Qxf3 Qxh1+ 15. Ke2 h5 16. Nd6+ Ke7 17. Qxf7+ Kxd6 18. Ba3+ Bc5 19. Bxc5+ Kxc5 20. Rxh1 Kb6 21. b4 Rf8 22. bxa5+ Kxa5 23. Qxg7 Ba6 24. Qxe5+ Kb6 25. Na4+ Kb7 26. Qe7+ Kb8 27. Bxa6 Re8 28. Qxe8+ Kc7 29. Qxa8 Kd6 30. c4 Kc7 31. c5 Kd7 32. Qxa7+ Ke6 33. Rxh5 Kf6 34. g4 Kg6 35. f4 Kf6 36. d4 Ke6 37. Ke3 Kf6 38. Ke4 Kg6 39. d5 cxd5+ 40. Kxd5 Kf6 41. c6 Kg6 42. c7 Kf6 43. c8R Kg6 44. Rc6# 1-0

[Event "Mecklenburg VP-ch U12"]
[Site "Malchow"]
[Date "2014.02.04"]
[Round "7"]
[White "Schulte, Felix"]
[Black "Altenstein, Jonas"]
[Result "0-1"]
[ECO "C55"]
[WhiteElo "859"]
[BlackElo "1282"]
[PlyCount "134"]
[EventDate "2014.02.01"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Nc3 Nc6 4. Bc4 Nxe4 5. Nxe4 d5 6. Bxd5 Qxd5 7. Nc3 Qd8 8. 0-0 Bd6 9. d3 Bg4 10. h3 Bh5 11. Be3 0-0 12. Re1 Ne7 13. Qe2 Bb4 14. Rad1 Nd5 15. Bd2 Bxc3 16. Bxc3 Nxc3 17. bxc3 Re8 18. Qe4 c6 19. Rd2 Bg6 20. Qe3 f6 21. Nh4 Bf7 22. Nf5 Qd7 23. Qf3 Bxa2 24. c4 Bxc4 25. Rdd1 Bd5 26. Qh5 Re6 27. c4 Bxg2 28. Kxg2 Kh8 29. Qg4 a5 30. Nxg7 Qxg7 31. Qxg7+ Kxg7 32. Rb1 Ra7 33. Kg3 Rd6 34. Red1 a4 35. Ra1 b5 36. cxb5 cxb5 37. Rdb1 Rxd3+ 38. Kg2 Rd5 39. Kf3 f5 40. Ke3 a3 41. Rb3 a2 42. Rb2 Ra3+ 43. Ke2 Rxh3 44. Rbxa2 Rhd3 45. Ra7+ Rd7 46. R7a5 Rb3 47. Ra6 Rb2+ 48. Ke1 b4 49. Re6 e4 50. Rb6 b3 51. Ra3 Rb1+ 52. Ke2 b2 53. Ra2 h5 54. f3 Re7 55. fxe4 Rxe4+ 56. Kf3 Rf1+ 57. Kg2 b1Q 58. Ra7+ Kf8 59. Ra8+ Re8 60. Rxb1 Rxb1 61. Ra5 Kg7 62. Rxf5 Kg6 63. Rd5 Rbe1 64. Rd3 R1e2+ 65. Kf3 h4 66. Rd1 Kf5 67. Rd3 h3 0-1

[Event "Mecklenburg VP-ch U12"]
[Site "Malchow"]
[Date "2014.02.03"]
[Round "4"]
[White "Altenstein, Jonas"]
[Black "Gazizov, Max"]
[Result "0-1"]
[ECO "B07"]
[WhiteElo "1282"]
[BlackElo "1246"]
[PlyCount "182"]
[EventDate "2014.02.01"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. e4 d6 2. Nf3 Nf6 3. Nc3 g6 4. Bc4 Bg7 5. d3 Nbd7 6. Bg5 0-0 7. Qd2 c6 8. h4 b5 9. Bb3 h5 10. Bh6 Ng4 11. Bxg7 Kxg7 12. Nh2 Nxh2 13. Rxh2 Ne5 14. d4 Ng4 15. Rh1 b4 16. Ne2 c5 17. f3 Nf6 18. Ng3 a5 19. a4 Qd7 20. Qe3 cxd4 21. Qxd4 Qa7 22. Qxa7 Rxa7 23. Kf2 Rd8 24. Rad1 e5 25. Rd2 Rad7 26. Rhd1 Bb7 27. Re2 Ba6 28. Re3 Kf8 29. Bd5 Rc7 30. Rd2 Rdc8 31. Bb3 Ne8 32. Re1 Bc4 33. Bxc4 Rxc4 34. Rc1 b3 35. c3 Rxa4 36. Rd5 Ra2 37. Rd2 Ke7 38. Ke3 Kd7 39. f4 exf4+ 40. Kxf4 Ke6 41. Ne2 a4 42. Nd4+ Kf6 43. Nb5 Rd8 44. c4 Ke6 45. c5 d5 46. exd5+ Rxd5 47. Re1+ Kd7 48. Rxd5+ Kc6 49. Rd2 Kxb5 50. Rxe8 Kxc5 51. Rc8+ Kb5 52. Rd7 Rxb2 53. Rb7+ Ka6 54. Rb4 Ka5 55. Rbb8 Ra2 56. Ra8+ Kb5 57. Rab8+ Ka5 58. Rc7 Ka6 59. Ke3 Rxg2 60. Ra8+ Kb5 61. Rb7+ Kc6 62. Rxf7 b2 63. Rb8 a3 64. Ra7 Rg3+ 65. Kf2 Rc3 66. Ra6+ Kc7 67. Rb4 Rc1 68. Ra7+ Kc6 69. Rab7 Rc2+ 70. Ke3 a2 71. R7b6+ Kc5 72. R4b5+ Kc4 73. Rb4+ Kd5 74. Rxg6 b1Q 75. Rd4+ Kc5 76. Rg5+ Kb6 77. Rxh5 a1Q 78. Rh6+ Rc6 79. Rxc6+ Kxc6 80. Rc4+ Kb5 81. Re4 Qxe4+ 82. Kxe4 Qa4+ 83. Kd5 Qxh4 84. Kd6 Qe4 85. Kc7 Qe6 86. Kd8 Qf7 87. Kc8 Qe7 88. Kb8 Qd7 89. Ka8 Kc6 90. Kb8 Qc7+ 91. Ka8 Qb7# 0-1

[Event "Mecklenburg VP-ch U12"]
[Site "Malchow"]
[Date "2014.02.03"]
[Round "5"]
[White "Langer, Robert"]
[Black "Altenstein, Jonas"]
[Result "1/2-1/2"]
[ECO "D00"]
[WhiteElo "940"]
[BlackElo "1282"]
[PlyCount "52"]
[EventDate "2014.02.01"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. d4 d5 2. e3 Nc6 3. Bd3 e5 4. f4 exf4 5. exf4 Bd6 6. c3 Nf6 7. Nf3 0-0 8. 0-0 Bg4 9. Qc2 h6 10. Ne5 Re8 11. Bd2 h5 12. Be1 Nd7 13. Bh7+ Kf8 14. Bf5 Bxe5 15. Bxg4 hxg4 16. fxe5 Qg5 17. Qe2 Kg8 18. Qf2 Qg6 19. Na3 a6 20. Nc2 Ndxe5 21. dxe5 Nxe5 22. Ne3 Nd3 23. Qe2 Rab8 24. Rb1 c5 25. Qd2 Qe4 26. Nc2 Qg6 1/2-1/2

[Event "Mecklenburg VP-ch U12"]
[Site "Malchow"]
[Date "2014.02.02"]
[Round "3"]
[White "Lange, Jannis"]
[Black "Altenstein, Jonas"]
[Result "1/2-1/2"]
[ECO "C44"]
[WhiteElo "1205"]
[BlackElo "1282"]
[PlyCount "53"]
[EventDate "2014.02.01"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. d3 Nc6 4. Bg5 Be7 5. Nbd2 d5 6. Bxf6 Bxf6 7. Be2 Bg4 8. Nxe5 Bxe2 9. Nxc6 Bxd1 10. Nxd8 Bxc2 11. Nxb7 Bxb2 12. Ke2 Bxa1 13. Rxa1 dxe4 14. Nxe4 Ba4 15. Rc1 Rc8 16. Nbd6+ Ke7 17. Nxc8+ Rxc8 18. Ke3 f5 19. Nc3 Bc6 20. f3 Kd6 21. Kd4 Rb8 22. Rb1 Re8 23. Nb5+ Bxb5 24. Rxb5 g6 25. Rd5+ Kc6 26. Rc5+ Kb6 27. Re5 1/2-1/2

[Event "Mecklenburg VP-ch U12"]
[Site "Malchow"]
[Date "2014.02.01"]
[Round "2"]
[White "Altenstein, Jonas"]
[Black "Eulitz, Charlotte"]
[Result "1-0"]
[ECO "C68"]
[WhiteElo "1282"]
[BlackElo "1146"]
[PlyCount "117"]
[EventDate "2014.02.01"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. Nc3 Bg4 6. h3 Bxf3 7. Qxf3 Nf6 8. b3 Bc5 9. Bb2 Bd4 10. 0-0-0 Qd6 11. Ne2 Bxb2+ 12. Kxb2 0-0-0 13. d3 Rhf8 14. Ng3 g6 15. Rd2 Rd7 16. Rhd1 Rfd8 17. d4 Qe6 18. c3 h6 19. Qe3 Ng8 20. f4 f6 21. f5 gxf5 22. Nxf5 h5 23. Qf3 Kb8 24. Re1 Ne7 25. Qxh5 Nxf5 26. Qxf5 Qxf5 27. exf5 exd4 28. Rxd4 Rxd4 29. cxd4 Rxd4 30. g4 Rd2+ 31. Ka3 Rh2 32. Re3 Rf2 33. Re6 b5 34. Rxf6 a5 35. b4 Rf3+ 36. Kb2 Rf2+ 37. Kc3 axb4+ 38. Kxb4 Rb2+ 39. Ka3 Rh2 40. Rxc6 Rxh3+ 41. Kb4 Rh2 42. Kxb5 Rb2+ 43. Kc5 Rc2+ 44. Kd5 Rd2+ 45. Ke6 Re2+ 46. Kf6 Rh2 47. g5 Rh5 48. g6 Rh6 49. Kf7 Kb7 50. Rf6 c5 51. g7 Rh7 52. Kf8 Rxg7 53. Kxg7 c4 54. Re6 c3 55. Re1 c2 56. f6 c1Q 57. Rxc1 Kb6 58. f7 Kb5 59. f8Q 1-0

[Event "Mecklenburg VP-ch U12"]
[Site "Malchow"]
[Date "2014.02.01"]
[Round "1"]
[White "Riebe, Leonie"]
[Black "Altenstein, Jonas"]
[Result "0-1"]
[ECO "C50"]
[WhiteElo "930"]
[BlackElo "1282"]
[PlyCount "64"]
[EventDate "2014.02.01"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. d3 Nf6 5. Nc3 0-0 6. Bg5 h6 7. Bh4 d6 8. Qd2 Be6 9. a3 Bxc4 10. dxc4 Nd4 11. Nxd4 Bxd4 12. Nd5 Nxe4 13. Bxd8 Nxd2 14. 0-0-0 Nxc4 15. Rd3 Rfxd8 16. Rg3 Bxb2+ 17. Kb1 Bxa3 18. Nf6+ Kh8 19. Nh5 g6 20. Nf6 a5 21. Re1 a4 22. Rd1 Bc5 23. Rdd3 a3 24. Rh3 a2+ 25. Ka1 Na3 26. Rxh6+ Kg7 27. Ng4 Nxc2+ 28. Kb2 a1Q+ 29. Kxc2 Ra2+ 30. Kb3 Qb2+ 31. Kc4 Qb4+ 32. Kd5 c6# 0-1

[Event "GER-chT North U16"]
[Site "Greifswald"]
[Date "2013.09.15"]
[Round "7.2"]
[White "Klein, Florian"]
[Black "Altenstein, Jonas"]
[Result "1/2-1/2"]
[ECO "D02"]
[WhiteElo "1634"]
[BlackElo "1221"]
[PlyCount "89"]
[EventDate "2013.09.12"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]
[WhiteTeam "Lehrte"]
[BlackTeam "Greifswald"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. d4 d5 2. Nf3 Bg4 3. e3 Nf6 4. Bd3 Nc6 5. b3 e5 6. Be2 Bxf3 7. Bxf3 e4 8. Be2 Qd7 9. Bb2 Bd6 10. c4 0-0-0 11. Nc3 Bb4 12. 0-0 h5 13. cxd5 Bxc3 14. dxc6 Qxc6 15. Rc1 Nd5 16. Bxc3 Nxc3 17. Qc2 Nxe2+ 18. Qxe2 Qd6 19. Qc4 Rdf8 20. Rc2 Kb8 21. Rfc1 c6 22. b4 Qd5 23. Kf1 Qxc4+ 24. Rxc4 Rh6 25. Rc5 f5 26. b5 cxb5 27. Rxb5 g5 28. Rcb1 b6 29. a4 Kb7 30. a5 Rff6 31. Re5 Rh7 32. Reb5 Rc7 33. axb6 axb6 34. Rc5 Rxc5 35. dxc5 Rc6 36. cxb6 Rxb6 37. Rd1 Kc6 38. Rc1+ Kd6 39. g3 Rb8 40. Rd1+ Ke6 41. Ra1 Rb6 42. Ra8 Rb1+ 43. Kg2 Kf6 44. Ra6+ Kg7 45. Ra7+ 1/2-1/2

[Event "GER-chT North U16"]
[Site "Greifswald"]
[Date "2013.09.14"]
[Round "5.2"]
[White "Altenstein, Jonas"]
[Black "Rost, Henning"]
[Result "0-1"]
[ECO "B01"]
[WhiteElo "1221"]
[BlackElo "1622"]
[PlyCount "122"]
[EventDate "2013.09.12"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]
[WhiteTeam "Greifswald"]
[BlackTeam "Bad Schwartau"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qd6 4. d4 Nf6 5. Nf3 c6 6. Bc4 Bg4 7. Be3 e6 8. h3 Bh5 9. g4 Bg6 10. Ne5 Be7 11. Nxg6 hxg6 12. f4 Nd5 13. Bxd5 cxd5 14. Qd2 Bh4+ 15. Bf2 Bxf2+ 16. Qxf2 Nc6 17. 0-0-0 0-0-0 18. Qf3 Kb8 19. Rhf1 a6 20. a3 Rh4 21. Rd3 Rdh8 22. Rh1 Ka8 23. Ne2 Na5 24. Qg3 Nc4 25. Rb3 Qc7 26. Qe1 Qe7 27. Rb4 Ne3 28. Ng1 Nxg4 29. Qg3 Nf6 30. Ne2 Ne4 31. Qg2 Rc8 32. Ng3 Rxf4 33. Nxe4 Rxe4 34. Rd1 Qh4 35. Qf3 Qf4+ 36. Qxf4 Rxf4 37. Rh1 Rf2 38. c3 Ka7 39. Rd1 b6 40. a4 Kb7 41. a5 b5 42. Rd3 Rh8 43. Kb1 Rf1+ 44. Ka2 Rh4 45. Kb3 Rhf4 46. Rg3 R1f3 47. Rg2 Rxh3 48. Rg1 Rh5 49. Ra1 g5 50. Rg1 g4 51. Rg3 Rh3 52. Rg2 g3 53. Ka3 Rf2 54. Rg1 g2 55. Re1 Rh1 56. Rxh1 gxh1Q 57. Kb3 Qc1 58. Rxb5+ axb5 59. Kb4 Qxb2+ 60. Kc5 Qxc3+ 61. Kd6 Qc7# 0-1

[Event "GER-chT North U16"]
[Site "Greifswald"]
[Date "2013.09.14"]
[Round "6.2"]
[White "Frost, Jakob"]
[Black "Altenstein, Jonas"]
[Result "1/2-1/2"]
[ECO "C77"]
[WhiteElo "1372"]
[BlackElo "1221"]
[PlyCount "68"]
[EventDate "2013.09.12"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]
[WhiteTeam "Schwerin"]
[BlackTeam "Greifswald"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 b5 5. Bb3 Nf6 6. d3 a5 7. a3 Bc5 8. Bg5 0-0 9. Nc3 h6 10. Bh4 d6 11. h3 Be6 12. Bxe6 fxe6 13. Nxb5 Rb8 14. a4 d5 15. Qe2 Bd6 16. 0-0 Qd7 17. Rab1 Rf7 18. Rfe1 Re8 19. Bg3 Nh5 20. Bh2 Nf4 21. Bxf4 Rxf4 22. Rf1 Ref8 23. Rbe1 R4f6 24. Nh2 Rg6 25. Qh5 Rg5 26. Qd1 Rf4 27. Kh1 Bc5 28. Re2 Qf7 29. Qe1 Kh7 30. c4 Bb4 31. Qc1 d4 32. Qd1 Qg6 33. Rg1 Qf6 34. Nxc7 Qf7 1/2-1/2

[Event "GER-chT North U16"]
[Site "Greifswald"]
[Date "2013.09.13"]
[Round "3.3"]
[White "Altenstein, Jonas"]
[Black "Hesse, Henrik"]
[Result "1/2-1/2"]
[ECO "C42"]
[WhiteElo "1221"]
[BlackElo "1512"]
[PlyCount "76"]
[EventDate "2013.09.12"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]
[WhiteTeam "Greifswald"]
[BlackTeam "Treptow"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 e5 2. Nf3 Nf6 3. Nc3 Bb4 4. Bc4 Nc6 5. Qe2 d6 6. 0-0 0-0 7. Re1 Bg4 8. a3 Nd4 9. Qd3 Bxc3 10. dxc3 Nxf3+ 11. gxf3 Be6 12. Kh1 Nh5 13. Rg1 Nf4 14. Bxf4 exf4 15. Qd4 g5 16. h4 h6 17. Rg2 Bxc4 18. Qxc4 Kh7 19. hxg5 hxg5 20. Rag1 f6 21. Qd5 Kg7 22. Rh2 Qd7 23. Rxg5+ fxg5 24. Qxg5+ Kf7 25. Rh7+ Ke8 26. Rxd7 Kxd7 27. Qb5+ Kc8 28. Kg2 a6 29. Qc4 Kd7 30. Kf1 Rf6 31. Qd4 Rg6 32. e5 Rag8 33. exd6 Rg1+ 34. Ke2 Re8+ 35. Kd2 Rg6 36. Kc1 Rxd6 37. Qg7+ Kc6 38. Kb1 Ree6 1/2-1/2

[Event "GER-chT North U16"]
[Site "Greifswald"]
[Date "2013.09.13"]
[Round "4.2"]
[White "Balasz, Kata"]
[Black "Altenstein, Jonas"]
[Result "1-0"]
[ECO "D35"]
[WhiteElo "1668"]
[BlackElo "1221"]
[PlyCount "87"]
[EventDate "2013.09.12"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]
[WhiteTeam "Hagen"]
[BlackTeam "Greifswald"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Nbd7 5. cxd5 exd5 6. Nxd5 Be7 7. Nxf6+ Nxf6 8. a3 Bf5 9. e3 0-0 10. Bxf6 Bxf6 11. Nf3 Re8 12. Bc4 Be4 13. 0-0 Rc8 14. Nd2 Qd7 15. Nxe4 Rxe4 16. Qf3 Qg4 17. Be2 Qe6 18. Bd3 Rh4 19. Bf5 Qe8 20. Bxc8 Qxc8 21. Rac1 Rh6 22. Rc3 Rg6 23. Rfc1 c6 24. R3c2 Be7 25. b4 a6 26. d5 Rh6 27. dxc6 Qc7 28. g3 bxc6 29. Rxc6 Rxc6 30. Qxc6 Qxc6 31. Rxc6 g6 32. Rxa6 Bf6 33. Rxf6 Kg7 34. Rc6 h5 35. b5 g5 36. b6 f6 37. b7 Kg6 38. b8Q h4 39. Qd8 hxg3 40. Qxf6+ Kh5 41. Kg2 gxh2 42. Qf7+ Kh4 43. Rh6+ Kg4 44. f3# 1-0

[Event "GER-chT North U16"]
[Site "Greifswald"]
[Date "2013.09.12"]
[Round "2.3"]
[White "Lemke, Berfin"]
[Black "Altenstein, Jonas"]
[Result "1-0"]
[ECO "C50"]
[WhiteElo "1695"]
[BlackElo "1221"]
[PlyCount "85"]
[EventDate "2013.09.12"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]
[WhiteTeam "Hamburg Koenigsspringer"]
[BlackTeam "Greifswald"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. d3 d6 5. c3 Bg4 6. Nbd2 Nf6 7. Bb3 Qe7 8. Nf1 0-0-0 9. Ne3 Be6 10. 0-0 h6 11. Nd5 Bxd5 12. Bxd5 Nxd5 13. exd5 Nb8 14. b4 Bb6 15. a4 a6 16. a5 Ba7 17. Qb3 Qd7 18. c4 Rde8 19. b5 Bc5 20. Rb1 b6 21. bxa6 Nxa6 22. axb6 Bxb6 23. d4 f6 24. Qa3 Kb7 25. c5 dxc5 26. dxc5 Nxc5 27. Qxc5 Kc8 28. Rxb6 e4 29. Nd4 Re5 30. Ra6 Qxd5 31. Qxd5 Rxd5 32. Ra8+ Kd7 33. Rxh8 Rxd4 34. Rh7 Ke6 35. Rxg7 c5 36. Be3 Rc4 37. Rc1 Ra4 38. Bxc5 f5 39. Rg6+ Ke5 40. Rd1 f4 41. Rxh6 Kf5 42. Rd5+ Kg4 43. h3# 1-0

[Event "Mecklenburg VP-ch U10"]
[Site "Malchow"]
[Date "2011.02.14"]
[Round "7.4"]
[White "Altenstein, Jonas"]
[Black "Luu, Vu Phong Chi Khang"]
[Result "1-0"]
[ECO "C57"]
[WhiteElo "900"]
[BlackElo "784"]
[PlyCount "51"]
[EventDate "2011.02.14"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 Qe7 5. Nxf7 Rg8 6. Ng5 Qc5 7. Bxg8 Ng4 8. Qxg4 d6 9. Qf3 Nd4 10. Qf7+ Kd8 11. Qxf8+ Kd7 12. Qxg7+ Kc6 13. Bd5+ Kb6 14. Na3 Bg4 15. f3 c6 16. c3 cxd5 17. cxd4 Qxd4 18. fxg4 dxe4 19. Qxh7 Rf8 20. Qxe4 Qc5 21. Ne6 Qf2+ 22. Kd1 Rc8 23. Nc4+ Kb5 24. Nxd6+ Ka6 25. Qxb7+ Ka5 26. Qb5# 1-0

[Event "Mecklenburg VP-ch U10"]
[Site "Malchow"]
[Date "2011.02.14"]
[Round "2.2"]
[White "Altenstein, Jonas"]
[Black "Schamber, Dennis"]
[Result "0-1"]
[ECO "B31"]
[WhiteElo "900"]
[BlackElo "790"]
[PlyCount "72"]
[EventDate "2011.02.14"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c5 2. c3 Nc6 3. Nf3 g6 4. Bb5 Nf6 5. d3 d6 6. Bxc6+ bxc6 7. Bg5 Bg7 8. Qc2 0-0 9. Nbd2 Bg4 10. d4 cxd4 11. cxd4 Qc7 12. d5 Rac8 13. Nd4 c5 14. Rc1 Nxd5 15. exd5 Bxd4 16. f3 Bf5 17. Qc4 Bxb2 18. Rd1 Bg7 19. g4 Bd7 20. Kf1 Rb8 21. Bxe7 Bb5 22. Bxf8 Bxc4+ 23. Nxc4 Rxf8 24. h4 Qb7 25. Nxd6 Qa6+ 26. Kg2 Qxd6 27. h5 Re8 28. h6 Bf6 29. Rd2 c4 30. Rc1 Bg5 31. Rxc4 Bxd2 32. Rd4 Bxh6 33. a4 Re5 34. g5 Bxg5 35. f4 Bxf4 36. Rxf4 Qxd5+ 0-1

[Event "Mecklenburg VP-ch U10"]
[Site "Malchow"]
[Date "2011.02.14"]
[Round "4.5"]
[White "Altenstein, Jonas"]
[Black "Wurst, Maximilian1111"]
[Result "0-1"]
[ECO "C50"]
[WhiteElo "900"]
[BlackElo "766"]
[PlyCount "70"]
[EventDate "2011.02.14"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. d3 d6 5. Nc3 Bg4 6. Bg5 Nf6 7. h3 Bh5 8. g4 Bg6 9. Qe2 0-0 10. 0-0-0 h6 11. Bh4 Nb4 12. g5 hxg5 13. Bxg5 c6 14. a3 Na6 15. h4 Bh5 16. Rdg1 Bd4 17. Nd1 b5 18. Ba2 Qe7 19. Rh2 Nc5 20. Rhg2 g6 21. Bh6 Rfe8 22. Bg5 Ne6 23. Bxe6 Qxe6 24. Rg3 Ng4 25. Nxd4 exd4 26. f3 Ne5 27. Qf2 Rf8 28. c3 Nxd3+ 29. Kd2 Nxf2 30. Nxf2 dxc3+ 31. bxc3 Qa2+ 32. Ke3 Rfe8 33. f4 Qe2+ 34. Kd4 Qxf2+ 35. Kd3 Qe2+ 0-1

[Event "Mecklenburg VP-ch U10"]
[Site "Malchow"]
[Date "2011.02.14"]
[Round "5.7"]
[White "Dinh, Do Nam"]
[Black "Altenstein, Jonas"]
[Result "0-1"]
[ECO "C42"]
[BlackElo "900"]
[PlyCount "56"]
[EventDate "2011.02.14"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Nc3 Bb4 4. Bc4 Bxc3 5. dxc3 Nxe4 6. Nxe5 Qe7 7. Qf3 f6 8. Nf7 Ng5+ 9. Be3 Nxf3+ 10. gxf3 Rf8 11. 0-0-0 Rxf7 12. Bxf7+ Qxf7 13. Rd4 Qxa2 14. Re4+ Kf7 15. Kd2 Qxb2 16. Rg1 d5 17. Rh4 Bf5 18. Rc1 g5 19. Rb4 Qa2 20. Rxb7 Kg6 21. Rxc7 Nd7 22. Rb7 Ne5 23. Kd1 Nxf3 24. Rbb1 Nxh2 25. Ra1 Qc4 26. Bd2 Nf3 27. Be1 Qf1 28. Rcb1 Qxe1# 0-1

[Event "Mecklenburg VP-ch U10"]
[Site "Malchow"]
[Date "2011.02.14"]
[Round "6.5"]
[White "Lichtnau, Tim"]
[Black "Altenstein, Jonas"]
[Result "1/2-1/2"]
[ECO "C42"]
[BlackElo "900"]
[PlyCount "129"]
[EventDate "2011.02.14"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 Qe7 4. Nf3 Nxe4 5. Qe2 Nf6 6. Nc3 Nc6 7. d4 d5 8. Bf4 Bg4 9. 0-0-0 0-0-0 10. Re1 Re8 11. Qe3 Bxf3 12. gxf3 Nxd4 13. Bh3+ Ne6 14. Qxa7 Kd7 15. Qxb7 Qc5 16. Re2 Bd6 17. Be3 Qc6 18. Qxc6+ Kxc6 19. Rhe1 Nf4 20. Bxf4 Bxf4+ 21. Kd1 Rxe2 22. Rxe2 Bxh2 23. a4 Rb8 24. b3 Nh5 25. Re7 Bg1 26. Bd7+ Kd6 27. Rxf7 Bxf2 28. Bg4 g6 29. Rxh7 Nf4 30. Rh6 Be3 31. Bf5 Ke5 32. Bxg6 Rg8 33. Ke1 Rxg6 34. Rxg6 Nxg6 35. a5 Bc5 36. a6 Ne7 37. b4 Bb6 38. Nb5 Nc6 39. Nxc7 Bxc7 40. b5 Na7 41. Kd2 Nxb5 42. c3 Ba5 43. Ke3 Bxc3 44. f4+ Kf5 45. Kf3 d4 46. Ke2 Kxf4 47. Kd3 Kf3 48. Kc4 Ke2 49. Kxb5 d3 50. a7 d2 51. a8Q d1Q 52. Qe8+ Kf2 53. Qc6 Qb3+ 54. Kc5 Qb4+ 55. Kd5 Qd4+ 56. Ke6 Qe5+ 57. Kd7 Kg1 58. Qe6 Qb5+ 59. Ke7 Qb7+ 60. Qd7 Bf6+ 61. Ke6 Qb6+ 62. Qd6 Qb2 63. Qg3+ Kf1 64. Qh3+ Ke1 65. Qh1+ 1/2-1/2

[Event "Mecklenburg VP-ch U10"]
[Site "Malchow"]
[Date "2011.02.14"]
[Round "1.2"]
[White "Lukas, Lasse"]
[Black "Altenstein, Jonas"]
[Result "0-1"]
[ECO "C42"]
[WhiteElo "717"]
[BlackElo "900"]
[PlyCount "62"]
[EventDate "2011.02.14"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e5 2. Bc4 Nf6 3. Nc3 Bb4 4. Nf3 d6 5. Ng5 0-0 6. 0-0 Bg4 7. Qe1 h6 8. Nxf7 Rxf7 9. Bxf7+ Kxf7 10. a3 Bc5 11. d3 Nc6 12. Nb1 Nd4 13. Ra2 Nxc2 14. Qd2 Nd4 15. Qc2 Nxc2 16. b3 Nd4 17. f3 Nxb3+ 18. Kh1 Nxc1 19. Rxc1 Be6 20. Rb2 Be3 21. Re1 Bd4 22. Rb3 Bxb3 23. Rc1 Bb2 24. Re1 c5 25. Re2 Bd4 26. Nd2 Bc2 27. Nf1 Bxd3 28. Rd2 Bxf1 29. a4 Qa5 30. Ra2 Bc4 31. Ra3 Qe1# 0-1

[Event "Mecklenburg VP-ch U10"]
[Site "Malchow"]
[Date "2011.02.14"]
[Round "3.3"]
[White "Schulz, Daniel"]
[Black "Altenstein, Jonas"]
[Result "1/2-1/2"]
[ECO "C29"]
[WhiteElo "1031"]
[BlackElo "900"]
[PlyCount "37"]
[EventDate "2011.02.14"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e5 2. Nc3 Nf6 3. f4 d5 4. fxe5 Nxe4 5. Nf3 Bg4 6. Qe2 Nxc3 7. dxc3 c6 8. Bf4 Bc5 9. 0-0-0 0-0 10. h3 Bh5 11. g4 Bg6 12. h4 f5 13. gxf5 Bxf5 14. c4 Bg4 15. Bh3 Qxh4 16. Bxg4 Qxg4 17. Rh4 Qd7 18. cxd5 cxd5 19. Rdh1 1/2-1/2

[Event "Mecklenburg VP-ch U10"]
[Site "Malchow"]
[Date "2010.02.??"]
[Round "1.6"]
[White "Altenstein, Jonas"]
[Black "Karrasch, Lars"]
[Result "1-0"]
[ECO "C50"]
[BlackElo "773"]
[PlyCount "71"]
[EventDate "2010.02.10"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. Nc3 d6 5. d3 Nf6 6. Bg5 h6 7. Bh4 Bg4 8. Nd5 Nd4 9. Bxf6 gxf6 10. h3 Bh5 11. g4 Bg6 12. Nxd4 Bxd4 13. Qf3 f5 14. gxf5 Bh7 15. c3 Bb6 16. Nxb6 cxb6 17. f6 Qd7 18. d4 0-0-0 19. Rg1 Bg6 20. Rd1 h5 21. dxe5 h4 22. exd6 Bh5 23. Qf4 Bxd1 24. Kxd1 Qc6 25. Bxf7 Rxd6+ 26. Kc1 Rxf6 27. Qg4+ Kc7 28. Bd5 Qe8 29. Qg7+ Rf7 30. Bxf7 Qd8 31. Bd5+ Kd6 32. Rg6+ Kc5 33. Qxb7 Qe8 34. Re6 Qb5 35. Rc6+ Qxc6 36. Qxc6# 1-0

[Event "Mecklenburg VP-ch U10"]
[Site "Malchow"]
[Date "2010.02.??"]
[Round "4.3"]
[White "Altenstein, Jonas"]
[Black "Retzlaff, Tobias"]
[Result "0-1"]
[ECO "C50"]
[BlackElo "881"]
[PlyCount "140"]
[EventDate "2010.02.10"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. Nc3 Nf6 5. d3 d6 6. Be3 Bb6 7. 0-0 0-0 8. Bxb6 axb6 9. Qe2 Be6 10. Bb5 Bg4 11. h3 Bh5 12. Nd5 Nd4 13. Qe3 Nxb5 14. Nxf6+ Qxf6 15. g4 Bg6 16. h4 h6 17. g5 hxg5 18. hxg5 Qf4 19. Qxf4 exf4 20. c4 Na7 21. Kg2 b5 22. Kh3 bxc4 23. dxc4 Bxe4 24. Kg4 Bxf3+ 25. Kxf3 f6 26. Kxf4 fxg5+ 27. Kxg5 b5 28. cxb5 Nxb5 29. a4 Nd4 30. f4 Kh7 31. a5 Nb3 32. Ra3 Nxa5 33. b4 Nc4 34. Rxa8 Rxa8 35. Rh1+ Kg8 36. Kg6 c5 37. Rc1 Ne3 38. bxc5 dxc5 39. Rxc5 Ra6+ 40. Kg5 Rf6 41. Rc3 Rxf4 42. Kxf4 Nd5+ 43. Kg5 Nxc3 44. Kg6 Kf8 45. Kf5 Kf7 46. Kg5 Nb5 47. Kf5 g6+ 48. Ke5 Ke7 49. Kf4 Kf6 50. Kg4 Nd6 51. Kh4 Kf5 52. Kg3 Kg5 53. Kf2 Kf4 54. Kg2 Kg4 55. Kg1 Kg3 56. Kf1 g5 57. Kg1 g4 58. Kh1 Kf2 59. Kh2 g3+ 60. Kh3 g2 61. Kg4 g1R+ 62. Kf4 Nf5 63. Kxf5 Rg3 64. Kf6 Kf3 65. Kf5 Rg4 66. Ke5 Rh4 67. Kd5 Ke3 68. Kc5 Kd3 69. Kb5 Kc3 70. Kc6 Rh5 0-1

[Event "Mecklenburg VP-ch U10"]
[Site "Malchow"]
[Date "2010.02.??"]
[Round "7.1"]
[White "Altenstein, Jonas"]
[Black "Sadewasser, Lucie"]
[Result "0-1"]
[ECO "C57"]
[BlackElo "1173"]
[PlyCount "54"]
[EventDate "2010.02.10"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 d5 5. exd5 Nd4 6. c3 Nf5 7. d4 Qd6 8. 0-0 exd4 9. Re1+ Be7 10. cxd4 h6 11. Ne4 Qb4 12. Qc2 Qxe1+ 13. Bf1 Qxe4 14. Qxe4 Nxe4 15. Bd3 Nf6 16. Nc3 Nxd4 17. Nb5 Nxb5 18. Bxb5+ Bd7 19. Bxd7+ Nxd7 20. Bf4 Bd6 21. Re1+ Kd8 22. Bxd6 cxd6 23. f4 Re8 24. Rd1 Ke7 25. Re1+ Kf8 26. Rc1 Rac8 27. Rd1 Rc2 0-1

[Event "Mecklenburg VP-ch U10"]
[Site "Malchow"]
[Date "2010.02.??"]
[Round "5.6"]
[White "Altenstein, Jonas"]
[Black "Wurst, Maximilian1111"]
[Result "1-0"]
[ECO "C50"]
[PlyCount "43"]
[EventDate "2010.02.10"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Nc3 Bc5 5. d3 d6 6. Be3 a6 7. Bxc5 dxc5 8. Ng5 0-0 9. 0-0 h6 10. Nf3 b5 11. Bd5 Bb7 12. Nxe5 Qe7 13. Nxc6 Bxc6 14. Bxc6 Ra7 15. Re1 b4 16. Na4 Rd8 17. c3 bxc3 18. Nxc3 Rd6 19. Ba4 a5 20. Nb5 Raa6 21. Nxd6 Qxd6 22. e5 1-0

[Event "Mecklenburg VP-ch U10"]
[Site "Malchow"]
[Date "2010.02.??"]
[Round "6.3"]
[White "Engel, Philipp"]
[Black "Altenstein, Jonas"]
[Result "0-1"]
[ECO "D02"]
[PlyCount "80"]
[EventDate "2010.02.10"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. d4 d5 2. Bf4 Bf5 3. e3 Nf6 4. Nf3 e6 5. c4 c6 6. c5 b6 7. b4 a5 8. Qd2 h6 9. h3 g5 10. Bh2 Ne4 11. Qb2 Nd7 12. a3 bxc5 13. bxc5 Rb8 14. Qc2 Rb7 15. Bd3 Qe7 16. 0-0 Bg7 17. Ra2 e5 18. Qe2 g4 19. Ne1 gxh3 20. Qf3 hxg2 21. Nxg2 Qf6 22. Ba6 Ra7 23. Bd3 Rb7 24. Rc2 Rb3 25. Rd1 0-0 26. Kh1 Rfb8 27. Rcc1 Rb2 28. Bg1 R8b3 29. Rc2 Rxb1 30. Rcc1 Rxc1 31. Rxc1 Rxd3 32. Qe2 Rxa3 33. Qa6 Ra2 34. Qa8+ Bf8 35. Rf1 Nd2 36. Rd1 Bg4 37. Re1 Nf3 38. Rf1 Qg5 39. Qxc6 Qh5+ 40. Bh2 Qxh2# 0-1

[Event "Mecklenburg VP-ch U10"]
[Site "Malchow"]
[Date "2010.02.??"]
[Round "3.6"]
[White "Stange, Laura"]
[Black "Altenstein, Jonas"]
[Result "0-1"]
[ECO "C50"]
[WhiteElo "737"]
[PlyCount "70"]
[EventDate "2010.02.10"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. d3 d6 5. Bg5 f6 6. Bh4 Nge7 7. Nc3 Ng6 8. Qe2 Nxh4 9. Nxh4 Nd4 10. Qd2 c6 11. Ne2 Nxe2 12. Qxe2 b5 13. Bb3 d5 14. exd5 cxd5 15. 0-0-0 h5 16. Ng6 Rh6 17. Nxe5 fxe5 18. Qxe5+ Be6 19. Qxg7 Bf8 20. Qc3 Rc8 21. Qe1 Qe7 22. h3 a5 23. a4 b4 24. g4 hxg4 25. h4 Rxh4 26. Rxh4 Qxh4 27. Qxe6+ Kd8 28. Qf7 Qe7 29. Qxd5+ Qd6 30. Qxa5+ Rc7 31. Qg5+ Be7 32. Qxg4 Qh6+ 33. Rd2 Bg5 34. Qd4+ Rd7 35. a5 Qh1# 0-1

[Event "Mecklenburg VP-ch U10"]
[Site "Malchow"]
[Date "2010.02.??"]
[Round "2.2"]
[White "Tsoumanis, Neoptolemos"]
[Black "Altenstein, Jonas"]
[Result "1-0"]
[ECO "C47"]
[WhiteElo "1030"]
[PlyCount "51"]
[EventDate "2010.02.10"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. d4 d6 5. d5 Na5 6. Bg5 c6 7. Be2 Be7 8. 0-0 Bg4 9. b4 Bxf3 10. Bxf3 Nc4 11. b5 cxd5 12. Nxd5 b6 13. Nxe7 Qxe7 14. Bxf6 Qxf6 15. Qd5 Rc8 16. Be2 Rc5 17. Qd1 Na3 18. Qd2 Nxb5 19. Bxb5+ Rxb5 20. Rfd1 Rb2 21. Qc3 Rb5 22. Qc6+ Ke7 23. Qxb5 Qf4 24. Qd3 g5 25. Qxd6+ Ke8 26. Qd8# 1-0

