[Event "Hannover Bezirks-ch U16/18"]
[Site "Lehrte"]
[Date "2020.10.25"]
[Round "5.7"]
[White "Diederichs, Karl"]
[Black "Kieselbach, Marvin"]
[Result "0-1"]
[ECO "D35"]
[WhiteElo "1661"]
[BlackElo "1695"]
[PlyCount "70"]
[EventDate "2020.10.24"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "GER"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 e6 2. Nf3 d5 3. c4 c6 4. cxd5 exd5 5. Nc3 Bd6 6. Qc2 Nf6 7. Bg5 h6 8. Bxf6 gxf6 9. e3 Bg4 10. Bd3 Na6 11. Bxa6 bxa6 12. a3 Qd7 13. Na4 Bf5 14. Qc3 Rg8 15. Ke2 Qb7 16. Qa5 Qb3 17. Qxa6 Qc2+ 18. Nd2 Rxg2 19. Nc3 Bd3+ 20. Qxd3 Rxf2+ 21. Kxf2 Qxd3 22. Rhd1 Qf5+ 23. Nf3 0-0-0 24. Rac1 Kd7 25. Na4 Bxh2 26. Nc5+ Kc7 27. Na6+ Kb6 28. Nb4 Rc8 29. Rh1 Bd6 30. Nc2 h5 31. Ke2 Rg8 32. Nh4 Qg4+ 33. Kd2 Qe4 34. Rcf1 Rg4 35. Nf5 Rg2+ 0-1

[Event "Hannover Bezirks-ch U16/18"]
[Site "Lehrte"]
[Date "2020.10.25"]
[Round "4.6"]
[White "Rehbein, Vitus"]
[Black "Diederichs, Karl"]
[Result "1-0"]
[ECO "C16"]
[WhiteElo "1331"]
[BlackElo "1661"]
[PlyCount "61"]
[EventDate "2020.10.24"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "GER"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 Ne7 5. Qg4 Nf5 6. Nf3 c5 7. dxc5 Bxc5 8. Bd3 h5 9. Qf4 d4 10. Ne4 Bb4+ 11. Bd2 Bxd2+ 12. Nexd2 Nc6 13. Nb3 Nb4 14. Bxf5 exf5 15. Nbxd4 Qc7 16. 0-0 f6 17. Rfe1 Nd5 18. exf6+ Kd8 19. Qxc7+ Kxc7 20. fxg7 Rg8 21. Nb5+ Kb6 22. Re5 Nf4 23. Nh4 Rxg7 24. Rd1 Bd7 25. Rd6+ Bc6 26. a4 Nxg2 27. Nxg2 Rxg2+ 28. Kf1 Rxh2 29. a5+ Kxa5 30. Nc7+ Kb4 31. Rd4# 1-0

[Event "Hannover Bezirks-ch U16/18"]
[Site "Lehrte"]
[Date "2020.10.24"]
[Round "2.5"]
[White "Ahlbrecht, Malte"]
[Black "Diederichs, Karl"]
[Result "0-1"]
[ECO "C01"]
[BlackElo "1661"]
[PlyCount "96"]
[EventDate "2020.10.24"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "GER"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 e6 2. Nf3 d5 3. exd5 exd5 4. d4 Nf6 5. Nc3 c6 6. Bd3 Be7 7. 0-0 0-0 8. Bg5 Re8 9. Re1 Bg4 10. Qe2 Nbd7 11. h3 Bh5 12. Qe3 Bd6 13. Qxe8+ Qxe8 14. Rxe8+ Rxe8 15. g4 Bg6 16. Bxg6 hxg6 17. a4 Ne4 18. Nxe4 Rxe4 19. c3 f6 20. Be3 Nb6 21. a5 Nc4 22. Nd2 Nxd2 23. Bxd2 a6 24. f3 Re2 25. Rd1 Rh2 26. b4 Rxh3 27. f4 Rg3+ 28. Kf2 Rxg4 29. Kf3 Rh4 30. Kg3 g5 31. Rf1 Bxf4+ 32. Rxf4 Rxf4 33. Bxf4 gxf4+ 34. Kxf4 Kf7 35. Kg4 g6 36. Kf4 Ke6 37. Kg4 g5 38. Kh5 Kf5 39. b5 g4 40. bxc6 bxc6 41. Kh6 g3 42. Kg7 g2 43. Kf7 g1Q 44. Ke7 c5 45. dxc5 Qxc5+ 46. Kf7 Qc7+ 47. Kf8 Kg6 48. c4 Qf7# 0-1

[Event "Hannover Bezirks-ch U16/18"]
[Site "Lehrte"]
[Date "2020.10.24"]
[Round "1.6"]
[White "Diederichs, Karl"]
[Black "Rinke, Alexander"]
[Result "1/2-1/2"]
[ECO "D13"]
[WhiteElo "1661"]
[PlyCount "121"]
[EventDate "2020.10.24"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "GER"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. cxd5 cxd5 4. Nc3 Nf6 5. Nf3 Bg4 6. Bg5 e6 7. e3 Be7 8. Bd3 0-0 9. Qc2 Bxf3 10. gxf3 h6 11. Bh4 Nc6 12. a3 Qb6 13. Rg1 Na5 14. b4 Nc6 15. Na4 Qd8 16. Nc5 Qc7 17. Ke2 Qxh2 18. Bg3 Qh5 19. Rh1 Qg5 20. Bf4 Nxd4+ 21. exd4 Qxf4 22. Qd2 Qxd2+ 23. Kxd2 b6 24. Nb3 Nd7 25. Ke3 e5 26. Rag1 Rfc8 27. Rxh6 e4 28. fxe4 dxe4 29. Bxe4 Rc3+ 30. Kd2 Rxb3 31. Bh7+ Kh8 32. Bc2+ gxh6 33. Bxb3 Nf6 34. Ke3 Nd7 35. Ke4 f5+ 36. Ke3 Bf6 37. f4 Nb8 38. Rh1 Kg7 39. Be6 Nc6 40. d5 Nd4 41. Rc1 Nxe6 42. dxe6 Re8 43. Rc7+ Re7 44. Rc6 Kg6 45. Kf3 Kh5 46. Kg3 Bh4+ 47. Kh3 Bf2 48. b5 Kg6 49. a4 Kf6 50. Kg2 Bd4 51. Kg3 Rxe6 52. Rc7 a5 53. bxa6 Re8 54. a7 Ra8 55. Kh4 b5 56. axb5 Rxa7 57. b6 Bxb6 58. Rc6+ Ke7 59. Rxb6 Ra4 60. Rxh6 Rxf4+ 61. Kg5 1/2-1/2

[Event "Hannover Bezirks-ch U16/18"]
[Site "Lehrte"]
[Date "2020.10.24"]
[Round "3.2"]
[White "Diederichs, Karl"]
[Black "Sauer, Tim"]
[Result "0-1"]
[ECO "A48"]
[WhiteElo "1661"]
[BlackElo "1795"]
[PlyCount "44"]
[EventDate "2020.10.24"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "GER"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. Bg5 Bg7 4. e3 0-0 5. h3 d6 6. Be2 Nbd7 7. Nh2 e5 8. Ng4 Qe8 9. c3 Ne4 10. Bh6 f5 11. Bxg7 Kxg7 12. Nh2 f4 13. Nd2 Nxf2 14. Kxf2 fxe3+ 15. Kxe3 exd4+ 16. Kd3 Nc5+ 17. Kc2 d3+ 18. Bxd3 Nxd3 19. Kxd3 Bf5+ 20. Kc4 a5 21. Qg1 Qe6+ 22. Kd4 c5# 0-1

[Event "GER Pfingstopen U16"]
[Site "Playchess.com INT"]
[Date "2020.06.05"]
[Round "8"]
[White "Diederichs, Karl"]
[Black "Bartels, Sebastian"]
[Result "1-0"]
[ECO "A48"]
[WhiteElo "1349"]
[BlackElo "1620"]
[PlyCount "59"]
[EventDate "2020.06.05"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "CBM 197 Extra"]
[Source "ChessBase"]
[SourceDate "2020.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.09.30"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. e3 Bg7 4. Bd3 0-0 5. Nbd2 d6 6. c3 Re8 7. 0-0 e5 8. e4 Nbd7 9. Re1 exd4 10. cxd4 d5 11. e5 Nh5 12. Nf1 Bh8 13. Ng3 Nxg3 14. fxg3 f6 15. Bh6 fxe5 16. Nxe5 Nxe5 17. dxe5 Rxe5 18. Rxe5 Bxe5 19. Bc4 Be6 20. Qe2 Bd4+ 21. Kh1 Bf7 22. Bb3 Qf6 23. Rf1 Qe5 24. Qf3 Qe6 25. Rd1 Bxb2 26. Bxd5 Rd8 27. Bxe6 Rxd1+ 28. Qxd1 Bxe6 29. Qd8+ Kf7 30. Qf8# 1-0

[Event "GER Pfingstopen U16"]
[Site "Playchess.com INT"]
[Date "2020.06.05"]
[Round "7"]
[White "Diederichs, Karl"]
[Black "Grozea, Nicolae Theodor"]
[Result "1-0"]
[ECO "D04"]
[WhiteElo "1349"]
[BlackElo "1534"]
[PlyCount "49"]
[EventDate "2020.06.05"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "CBM 197 Extra"]
[Source "ChessBase"]
[SourceDate "2020.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.09.30"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. e3 Bf5 4. Ne5 Nc6 5. g4 Nxe5 6. gxf5 Nc6 7. Nc3 e6 8. fxe6 fxe6 9. Bh3 Qd7 10. f3 0-0-0 11. e4 dxe4 12. fxe4 Kb8 13. d5 exd5 14. Bxd7 Rxd7 15. Nxd5 Nxd5 16. exd5 Bc5 17. Qg4 Re8+ 18. Kf1 Rf7+ 19. Kg2 Ne5 20. Re1 Rf2+ 21. Kh3 Ref8 22. Rxe5 R8f3+ 23. Kh4 b6 24. Re8+ Kb7 25. Qc8# 1-0

[Event "GER Pfingstopen U16"]
[Site "Playchess.com INT"]
[Date "2020.06.05"]
[Round "11"]
[White "Diederichs, Karl"]
[Black "Hoke, Adrian Neo"]
[Result "1-0"]
[ECO "D05"]
[WhiteElo "1349"]
[BlackElo "1629"]
[PlyCount "89"]
[EventDate "2020.06.05"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "CBM 197 Extra"]
[Source "ChessBase"]
[SourceDate "2020.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.09.30"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. e3 e6 4. Bd3 c5 5. c3 Bd6 6. Nbd2 0-0 7. 0-0 Qc7 8. Re1 Nbd7 9. e4 dxe4 10. Nxe4 Nxe4 11. Rxe4 Nf6 12. Rh4 e5 13. dxe5 Bxe5 14. Ng5 h6 15. Nf3 Bd6 16. Bxh6 gxh6 17. Rxh6 Bf4 18. Rxf6 Kg7 19. Rxf4 Qxf4 20. Qc2 Bg4 21. Nh4 Rh8 22. g3 Qh6 23. f3 Be6 24. Bf5 Qg5 25. Bxe6 fxe6 26. Qe4 Rae8 27. Rd1 Re7 28. f4 Qg4 29. Nf3 Rc7 30. Qe5+ Kg6 31. Rd6 Qxf3 32. Rxe6+ Kf7 33. Qxc7+ Kxe6 34. Qe5+ Kf7 35. Qxh8 Qd1+ 36. Kg2 Qd5+ 37. Kh3 Qf5+ 38. Kh4 Qe6 39. Qh7+ Ke8 40. Qxb7 Qf6+ 41. Kh3 Qf5+ 42. Kg2 Qc2+ 43. Kh3 Qf5+ 44. g4 Qd3+ 45. Kh4 1-0

[Event "GER Pfingstopen U16"]
[Site "Playchess.com INT"]
[Date "2020.06.05"]
[Round "3"]
[White "Diederichs, Karl"]
[Black "Roemer, Alois"]
[Result "0-1"]
[ECO "D05"]
[WhiteElo "1349"]
[BlackElo "1593"]
[PlyCount "66"]
[EventDate "2020.06.05"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "CBM 197 Extra"]
[Source "ChessBase"]
[SourceDate "2020.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.09.30"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. e3 c5 4. Be2 Nc6 5. c3 e6 6. 0-0 b6 7. Bd3 Bb7 8. Nbd2 g6 9. Re1 Bg7 10. e4 cxd4 11. cxd4 dxe4 12. Nxe4 Nxe4 13. Bxe4 Rb8 14. Bxc6+ Bxc6 15. Be3 0-0 16. Rc1 Rc8 17. Nd2 Bxd4 18. Bxd4 Qxd4 19. Nb3 Qxd1 20. Rexd1 Ba4 21. Rxc8 Rxc8 22. h3 Bxb3 23. axb3 Rc2 24. Rd7 Rxb2 25. Rxa7 Rxb3 26. Rb7 b5 27. g3 Rb1+ 28. Kg2 b4 29. Kf3 b3 30. Ke3 b2 31. Kd2 Rf1 32. Kc3 b1Q 33. Rxb1 Rxb1 0-1

[Event "GER Pfingstopen U16"]
[Site "Playchess.com INT"]
[Date "2020.06.05"]
[Round "5"]
[White "Diederichs, Karl"]
[Black "Udelnov, Valentin"]
[Result "0-1"]
[ECO "A48"]
[WhiteElo "1349"]
[BlackElo "1573"]
[PlyCount "56"]
[EventDate "2020.06.05"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "CBM 197 Extra"]
[Source "ChessBase"]
[SourceDate "2020.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.09.30"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. e3 Bg7 4. Bd3 d6 5. Nbd2 0-0 6. c3 Nc6 7. 0-0 e5 8. Re1 Ne8 9. e4 a5 10. Nf1 f5 11. Ng3 f4 12. Nf1 Nf6 13. d5 Ne7 14. g3 h6 15. gxf4 exf4 16. Bxf4 Nh5 17. Bg3 Bg4 18. N1d2 Nxg3 19. fxg3 g5 20. Rf1 Ng6 21. Be2 Bh3 22. Rf2 Ne5 23. Nxe5 Rxf2 24. Kxf2 Bxe5 25. Kg1 Qf6 26. Nf3 Rf8 27. Qd3 g4 28. Nxe5 Qf2+ 0-1

[Event "GER Pfingstopen U16"]
[Site "Playchess.com INT"]
[Date "2020.06.05"]
[Round "2"]
[White "Koelle, Tobias"]
[Black "Diederichs, Karl"]
[Result "1-0"]
[ECO "C02"]
[WhiteElo "2356"]
[BlackElo "1349"]
[PlyCount "41"]
[EventDate "2020.06.05"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "CBM 197 Extra"]
[Source "ChessBase"]
[SourceDate "2020.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.09.30"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Qb6 6. Bd3 Bd7 7. Bc2 Rc8 8. 0-0 cxd4 9. cxd4 Nb4 10. Ba4 Bxa4 11. Qxa4+ Nc6 12. Nc3 Qb4 13. Be3 Qxa4 14. Nxa4 Bb4 15. a3 Be7 16. b4 a5 17. b5 Na7 18. Rfb1 f6 19. exf6 Nxf6 20. Ng5 Kd7 21. Nb6+ 1-0

[Event "GER Pfingstopen U16"]
[Site "Playchess.com INT"]
[Date "2020.06.05"]
[Round "9"]
[White "Kullmann, Max"]
[Black "Diederichs, Karl"]
[Result "1-0"]
[ECO "D31"]
[WhiteElo "1568"]
[BlackElo "1349"]
[PlyCount "37"]
[EventDate "2020.06.05"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "CBM 197 Extra"]
[Source "ChessBase"]
[SourceDate "2020.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.09.30"]
[SourceQuality "1"]

1. d4 e6 2. c4 d5 3. Bf4 c6 4. Nc3 Bd6 5. Bxd6 Qxd6 6. c5 Qd8 7. e3 Nf6 8. Nf3 Nbd7 9. Bd3 0-0 10. 0-0 Re8 11. Qc2 e5 12. dxe5 Nxe5 13. Nxe5 Rxe5 14. e4 Rg5 15. exd5 Bh3 16. Be4 Nxe4 17. Qxe4 Rxg2+ 18. Kh1 Qh4 19. Qxh4 1-0

[Event "GER Pfingstopen U16"]
[Site "Playchess.com INT"]
[Date "2020.06.05"]
[Round "6"]
[White "Kullmann, Theo"]
[Black "Diederichs, Karl"]
[Result "1-0"]
[ECO "C07"]
[WhiteElo "1582"]
[BlackElo "1349"]
[PlyCount "77"]
[EventDate "2020.06.05"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "CBM 197 Extra"]
[Source "ChessBase"]
[SourceDate "2020.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.09.30"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 c5 4. c3 Nc6 5. Ngf3 Qb6 6. a4 cxd4 7. a5 Nxa5 8. Nxd4 Nc6 9. Qa4 Bd7 10. Nxc6 Bxc6 11. Qa5 Bc5 12. b4 Bxf2+ 13. Kd1 Qxa5 14. Rxa5 Bb6 15. Ra3 dxe4 16. b5 Bd5 17. c4 Ne7 18. cxd5 Nxd5 19. Nxe4 Rc8 20. Nd6+ Kd7 21. Nxc8 Rxc8 22. Rd3 Ke7 23. Be2 Nb4 24. Rb3 Nd5 25. Bg5+ f6 26. Bd2 Rd8 27. Re1 Bf2 28. Rf1 Ne3+ 29. Kc1 Nxf1 30. Bxf1 Bb6 31. Ra3 Rc8+ 32. Kb2 e5 33. Ba5 Bd4+ 34. Kb3 b6 35. Bb4+ Ke6 36. Rxa7 Rc1 37. Bc4+ Kf5 38. Bd3+ Kf4 39. Bd2+ 1-0

[Event "GER Pfingstopen U16"]
[Site "Playchess.com INT"]
[Date "2020.06.05"]
[Round "1"]
[White "Pikalow, Michael"]
[Black "Diederichs, Karl"]
[Result "1/2-1/2"]
[ECO "B15"]
[WhiteElo "1620"]
[BlackElo "1349"]
[PlyCount "89"]
[EventDate "2020.06.05"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "CBM 197 Extra"]
[Source "ChessBase"]
[SourceDate "2020.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.09.30"]
[SourceQuality "1"]

1. e4 e6 2. Nc3 d5 3. d4 c6 4. e5 c5 5. f4 Nc6 6. Nf3 Qb6 7. Be3 cxd4 8. Nxd4 Bc5 9. Na4 Qa5+ 10. c3 Bxd4 11. Bxd4 Nxd4 12. Qxd4 Bd7 13. Nc5 Qc7 14. Nxd7 Qxd7 15. a4 a6 16. Be2 Ne7 17. 0-0 0-0 18. g4 f5 19. exf6 Rxf6 20. Bd3 Nc6 21. Qe3 Raf8 22. Rae1 Nd8 23. Rf3 Qd6 24. Ref1 Rh6 25. Rh3 Rxh3 26. Qxh3 h6 27. f5 exf5 28. gxf5 Qb6+ 29. Kh1 Qxb2 30. f6 Rxf6 31. Rxf6 gxf6 32. Qxh6 Qa1+ 33. Kg2 Qb2+ 34. Kg1 Qa1+ 35. Bf1 Qxc3 36. Qg6+ Kf8 37. Bd3 Qd4+ 38. Kf1 Qf4+ 39. Ke1 Qh4+ 40. Ke2 Qxh2+ 41. Kd1 Qh1+ 42. Kd2 Qh2+ 43. Kd1 Qh1+ 44. Kd2 Qh2+ 45. Kd1 1/2-1/2

[Event "GER Pfingstopen U16"]
[Site "Playchess.com INT"]
[Date "2020.06.05"]
[Round "10"]
[White "Walter, Kiara Laurien"]
[Black "Diederichs, Karl"]
[Result "0-1"]
[ECO "B22"]
[WhiteElo "1620"]
[BlackElo "1349"]
[PlyCount "108"]
[EventDate "2020.06.05"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "CBM 197 Extra"]
[Source "ChessBase"]
[SourceDate "2020.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.09.30"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. c4 c6 5. cxd5 cxd5 6. Bb5+ Bd7 7. Bxd7+ Nxd7 8. Nc3 Ngf6 9. Bg5 Be7 10. Bxf6 Nxf6 11. Nf3 0-0 12. 0-0 Rc8 13. Re1 Re8 14. Rc1 Qd7 15. Re5 Bb4 16. Rxe8+ Rxe8 17. Ne5 Qf5 18. a3 Bxc3 19. bxc3 Ne4 20. Qf3 Qxf3 21. Nxf3 f5 22. Re1 Kf7 23. Nh4 g6 24. Nf3 Nxc3 25. Ne5+ Kg7 26. g3 Nb5 27. Kf1 Nxd4 28. Nd7 Rxe1+ 29. Kxe1 Nc2+ 30. Ke2 Nxa3 31. Nc5 b6 32. Nb7 a5 33. Nd8 b5 34. Ne6+ Kf6 35. Nf4 Ke5 36. Nd3+ Kd4 37. f4 b4 38. Nb2 Kc3 39. Nd1+ Kc2 40. Ne3+ Kc1 41. Kd3 b3 42. Nxd5 b2 43. Nc3 b1Q+ 44. Kd4 Qb4+ 45. Kd3 Qc4+ 46. Ke3 Qxc3+ 47. Ke2 Nc2 48. g4 Qe3+ 49. Kf1 Qxf4+ 50. Ke2 Qe3+ 51. Kf1 Nd4 52. gxf5 Kd1 53. fxg6 Nf3 54. gxh7 Qg1# 0-1

[Event "GER Pfingstopen U16"]
[Site "Playchess.com INT"]
[Date "2020.06.05"]
[Round "4"]
[White "Walter, Kiron Alexander"]
[Black "Diederichs, Karl"]
[Result "0-1"]
[ECO "C01"]
[WhiteElo "1620"]
[BlackElo "1349"]
[PlyCount "54"]
[EventDate "2020.06.05"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "CBM 197 Extra"]
[Source "ChessBase"]
[SourceDate "2020.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.09.30"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Nc3 c6 5. Nf3 Nf6 6. Bg5 Be7 7. Bd3 Nbd7 8. 0-0 0-0 9. h3 Re8 10. Qd2 Nf8 11. Rae1 Ng6 12. Bxf6 Bxf6 13. Rxe8+ Qxe8 14. Re1 Qd8 15. Qe2 Bd7 16. Ng5 Bxg5 17. Bxg6 hxg6 18. Nd1 Qf6 19. Ne3 Re8 20. Qf1 Qxd4 21. c3 Qb6 22. Re2 Bxe3 23. Rxe3 Rxe3 24. fxe3 Qxe3+ 25. Kh1 Bf5 26. Qa1 Be4 27. Qf1 Qd2 0-1

[Event "GER-ch Net Amateur Gr-B Vor3"]
[Site "Playchess.com INT"]
[Date "2020.04.16"]
[Round "5"]
[White "Diederichs, Karl"]
[Black "Drescher, Werner"]
[Result "1-0"]
[ECO "D05"]
[WhiteElo "1358"]
[BlackElo "1503"]
[PlyCount "37"]
[EventDate "2020.04.16"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 c5 3. e3 e6 4. c3 b6 5. Bd3 Bb7 6. Nbd2 d5 7. 0-0 Bd6 8. Re1 0-0 9. e4 dxe4 10. Nxe4 Nxe4 11. Bxe4 Bxe4 12. Rxe4 Nd7 13. Rg4 Nf6 14. Rh4 Ne4 15. Rxe4 Be7 16. Rg4 Bf6 17. Ng5 h6 18. Ne4 Be7 19. Bxh6 1-0

[Event "GER-ch Net Amateur Gr-B Vor3"]
[Site "Playchess.com INT"]
[Date "2020.04.16"]
[Round "8"]
[White "Diederichs, Karl"]
[Black "Klein, Andreas"]
[Result "1/2-1/2"]
[ECO "A41"]
[WhiteElo "1362"]
[BlackElo "1506"]
[PlyCount "41"]
[EventDate "2020.04.16"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. d4 d6 2. e3 c6 3. Nf3 Qc7 4. Bd3 g6 5. Nbd2 Bg7 6. c3 Nf6 7. 0-0 Nbd7 8. Re1 0-0 9. e4 Re8 10. e5 dxe5 11. Nxe5 Nxe5 12. dxe5 Nd5 13. Bc4 Bxe5 14. Nf3 Bg7 15. Bxd5 Rf8 16. Bb3 Bg4 17. Qe2 e6 18. h3 Bxf3 19. Qxf3 Rad8 20. Bg5 f6 21. Be3 1/2-1/2

[Event "GER-ch Net Amateur Gr-B Vor3"]
[Site "Playchess.com INT"]
[Date "2020.04.16"]
[Round "2"]
[White "Diederichs, Karl"]
[Black "Mantu, Eugen"]
[Result "0-1"]
[ECO "A48"]
[WhiteElo "1380"]
[BlackElo "1559"]
[PlyCount "42"]
[EventDate "2020.04.16"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 d6 3. e3 g6 4. Bd3 Bg7 5. Nbd2 0-0 6. c3 c6 7. 0-0 Qc7 8. Re1 e5 9. e4 Re8 10. Qb3 Be6 11. d5 cxd5 12. exd5 Nxd5 13. Qc2 Nf4 14. Be2 Nxe2+ 15. Rxe2 Bf5 16. Qd1 Bg4 17. Qe1 Nc6 18. h3 Bd7 19. Nc4 b5 20. Ne3 e4 21. Ng5 h6 0-1

[Event "GER-ch Net Amateur Gr-B Vor3"]
[Site "Playchess.com INT"]
[Date "2020.04.16"]
[Round "3"]
[White "Hofmeister, Frank"]
[Black "Diederichs, Karl"]
[Result "1-0"]
[ECO "C01"]
[WhiteElo "1468"]
[BlackElo "1371"]
[PlyCount "28"]
[EventDate "2020.04.16"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Bd3 c6 5. Nf3 Bd6 6. c3 Nd7 7. 0-0 Ngf6 8. Bg5 0-0 9. Re1 a6 10. Qc2 Re8 11. Bxh7+ Kh8 12. Bd3 Rxe1+ 13. Nxe1 Qc7 14. h3 Ne4 1-0

[Event "GER-ch Net Amateur Gr-B Vor3"]
[Site "Playchess.com INT"]
[Date "2020.04.16"]
[Round "7"]
[White "Lange, Martin2222"]
[Black "Diederichs, Karl"]
[Result "1-0"]
[ECO "B00"]
[WhiteElo "1518"]
[BlackElo "1372"]
[PlyCount "49"]
[EventDate "2020.04.16"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. e4 e6 2. d4 b6 3. Bd3 Bb7 4. Ne2 d5 5. e5 c5 6. c3 cxd4 7. cxd4 Nd7 8. 0-0 Rc8 9. Nbc3 Bb4 10. Bd2 Ne7 11. Rc1 Bxc3 12. Bxc3 0-0 13. f4 f6 14. f5 fxe5 15. dxe5 exf5 16. Bxf5 Nxf5 17. e6 Nc5 18. Bb4 Ne3 19. Rxf8+ Qxf8 20. Qd4 Nf5 21. Qe5 Nd3 22. Rxc8 Bxc8 23. Qxd5 Ne3 24. e7+ Nxd5 25. exf8Q# 1-0

[Event "GER-ch Net Amateur Gr-B Vor3"]
[Site "Playchess.com INT"]
[Date "2020.04.16"]
[Round "9"]
[White "Schlueter, Sabrina"]
[Black "Diederichs, Karl"]
[Result "1-0"]
[ECO "A40"]
[WhiteElo "1526"]
[BlackElo "1369"]
[PlyCount "35"]
[EventDate "2020.04.16"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. c4 b6 2. Nc3 Bb7 3. Nf3 e6 4. d4 d5 5. cxd5 exd5 6. Bg5 f6 7. Bf4 Bd6 8. Bxd6 Qxd6 9. e3 Ne7 10. Nb5 Qd7 11. Be2 Ba6 12. Nc3 Bxe2 13. Qxe2 c5 14. dxc5 bxc5 15. 0-0 Nbc6 16. Rfd1 0-0 17. Nxd5 Nxd5 18. e4 1-0

[Event "GER-ch Net Amateur Gr-B Vor3"]
[Site "Playchess.com INT"]
[Date "2020.04.16"]
[Round "6"]
[White "Tietz, Bennit"]
[Black "Diederichs, Karl"]
[Result "1-0"]
[ECO "B00"]
[WhiteElo "1547"]
[BlackElo "1382"]
[PlyCount "45"]
[EventDate "2020.04.16"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. e4 e6 2. d4 b6 3. Nc3 Bb7 4. Bd3 d5 5. e5 c5 6. Be3 Nd7 7. Nce2 Rc8 8. c3 g6 9. Ng3 Be7 10. Nf3 f6 11. exf6 Ngxf6 12. 0-0 Ng4 13. h3 Nxe3 14. fxe3 0-0 15. Ne5 Nxe5 16. dxe5 Qc7 17. Rxf8+ Rxf8 18. Qg4 Kg7 19. Nh5+ Kh8 20. Bxg6 hxg6 21. Qxg6 Bh4 22. Qh6+ Qh7 23. Qxf8+ 1-0

[Event "GER-ch Net Amateur Gr-B Vor2"]
[Site "Playchess.com INT"]
[Date "2020.04.15"]
[Round "8"]
[White "Diederichs, Karl"]
[Black "Atze, Burkhard"]
[Result "1-0"]
[ECO "A40"]
[WhiteElo "1370"]
[BlackElo "1534"]
[PlyCount "35"]
[EventDate "2020.04.15"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 196 Extra"]
[Source "ChessBase"]
[SourceDate "2020.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.07.31"]
[SourceQuality "1"]

1. d4 g6 2. Nf3 Bg7 3. e3 d6 4. Bd3 Nd7 5. Nbd2 e5 6. c3 f5 7. e4 fxe4 8. Nxe4 Qe7 9. 0-0 c6 10. Re1 d5 11. Neg5 Nh6 12. Nxe5 0-0 13. Nxd7 Qxd7 14. Nf3 Qd6 15. Ne5 Bxe5 16. Rxe5 Bf5 17. Bxh6 Bxd3 18. Qxd3 1-0

[Event "GER-ch Net Amateur Gr-B Vor2"]
[Site "Playchess.com INT"]
[Date "2020.04.15"]
[Round "5"]
[White "Diederichs, Karl"]
[Black "Block, Timo"]
[Result "0-1"]
[ECO "D05"]
[WhiteElo "1412"]
[BlackElo "1620"]
[PlyCount "100"]
[EventDate "2020.04.15"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 196 Extra"]
[Source "ChessBase"]
[SourceDate "2020.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.07.31"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. e3 c5 4. c3 e6 5. Bd3 Nc6 6. Nbd2 Bd6 7. 0-0 0-0 8. Re1 e5 9. e4 cxd4 10. exd5 Nxd5 11. cxd4 exd4 12. Nb3 Bg4 13. Nbxd4 Nxd4 14. Bxh7+ Kxh7 15. Qxd4 Bxf3 16. gxf3 Nf6 17. Qh4+ Kg8 18. Bg5 Be7 19. Re5 Re8 20. Rae1 Qd6 21. Bxf6 Qxf6 22. Qxf6 gxf6 23. Rxe7 Kf8 24. Rxe8+ Rxe8 25. Rxe8+ Kxe8 26. Kg2 Kf8 27. Kg3 Kg7 28. Kf4 Kg6 29. Kg4 f5+ 30. Kh4 f6 31. f4 b5 32. h3 a5 33. a3 b4 34. axb4 axb4 35. b3 Kh6 36. f3 Kg6 37. Kg3 Kh5 38. h4 Kg6 39. Kf2 Kh5 40. Ke3 Kxh4 41. Kd4 Kg3 42. Kc4 Kxf4 43. Kxb4 Kxf3 44. Kc5 Ke4 45. b4 f4 46. b5 f3 47. b6 f2 48. b7 f1Q 49. b8Q Qc1+ 50. Kd6 Qf4+ 0-1

[Event "GER-ch Net Amateur Gr-B Vor2"]
[Site "Playchess.com INT"]
[Date "2020.04.15"]
[Round "1"]
[White "Diederichs, Karl"]
[Black "Meissner, Steffen"]
[Result "0-1"]
[ECO "A48"]
[WhiteElo "1418"]
[BlackElo "1641"]
[PlyCount "44"]
[EventDate "2020.04.15"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 196 Extra"]
[Source "ChessBase"]
[SourceDate "2020.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.07.31"]
[SourceQuality "1"]

1. d4 g6 2. Nf3 Bg7 3. e3 d6 4. Bd3 Nf6 5. Nbd2 0-0 6. 0-0 c5 7. c3 cxd4 8. Nxd4 Nc6 9. Nxc6 bxc6 10. Bc2 Bb7 11. Re1 c5 12. e4 Qc7 13. a3 Rad8 14. Nf3 d5 15. exd5 Bxd5 16. Qe2 e6 17. c4 Bb7 18. Be3 Ng4 19. Rad1 Bxf3 20. Qxf3 Qxh2+ 21. Kf1 Qh4 22. Bxc5 Nh2+ 0-1

[Event "GER-ch Net Amateur Gr-B Vor2"]
[Site "Playchess.com INT"]
[Date "2020.04.15"]
[Round "3"]
[White "Diederichs, Karl"]
[Black "Qayumi, Roman"]
[Result "0-1"]
[ECO "D05"]
[WhiteElo "1402"]
[BlackElo "1567"]
[PlyCount "30"]
[EventDate "2020.04.15"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 196 Extra"]
[Source "ChessBase"]
[SourceDate "2020.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.07.31"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. e3 c5 4. c3 e6 5. Bd3 Nc6 6. Nbd2 Bd6 7. 0-0 0-0 8. Re1 e5 9. e4 dxe4 10. Nxe4 Nxe4 11. Bxe4 exd4 12. cxd4 Nxd4 13. Nxd4 cxd4 14. Qh5 g6 15. Qh3 Bxh3 0-1

[Event "GER-ch Net Amateur Gr-B Vor2"]
[Site "Playchess.com INT"]
[Date "2020.04.15"]
[Round "9"]
[White "Drescher, Werner"]
[Black "Diederichs, Karl"]
[Result "1-0"]
[ECO "C41"]
[WhiteElo "1520"]
[BlackElo "1391"]
[PlyCount "73"]
[EventDate "2020.04.15"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 196 Extra"]
[Source "ChessBase"]
[SourceDate "2020.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.07.31"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 d6 3. Bc4 a6 4. c3 Nd7 5. d4 exd4 6. cxd4 Be7 7. 0-0 Ngf6 8. Re1 0-0 9. Nc3 Nb6 10. Bb3 Bg4 11. h3 Bxf3 12. Qxf3 c6 13. Be3 d5 14. e5 Nfd7 15. Bc2 f6 16. e6 Nb8 17. Qg4 f5 18. Bxf5 Bf6 19. Rad1 Qe7 20. Bc1 Nc4 21. Rd3 Nd7 22. Rg3 Rae8 23. Re2 Ndb6 24. Bh6 Na8 25. h4 Nd6 26. h5 Nxf5 27. Qxf5 Bxd4 28. Qd3 Bxc3 29. bxc3 Qf7 30. Rxg7+ Qxg7 31. Bxg7 Kxg7 32. e7 Rf7 33. Qg3+ Kh8 34. h6 Rfxe7 35. Rxe7 Rxe7 36. Qb8+ Re8 37. Qxe8# 1-0

[Event "GER-ch Net Amateur Gr-B Vor2"]
[Site "Playchess.com INT"]
[Date "2020.04.15"]
[Round "7"]
[White "Goetz, Timon"]
[Black "Diederichs, Karl"]
[Result "1-0"]
[ECO "A13"]
[WhiteElo "1410"]
[BlackElo "1386"]
[PlyCount "66"]
[EventDate "2020.04.15"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 196 Extra"]
[Source "ChessBase"]
[SourceDate "2020.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.07.31"]
[SourceQuality "1"]

1. c4 b6 2. g3 Bb7 3. Nf3 e6 4. Bg2 d5 5. cxd5 exd5 6. d4 Ne7 7. 0-0 Nd7 8. Nc3 g6 9. Bg5 Bg7 10. Bxe7 Qxe7 11. Re1 0-0 12. Qd3 Nf6 13. Ne5 Ne4 14. Nxe4 dxe4 15. Bxe4 Bxe4 16. Qxe4 f6 17. Qd5+ Kh8 18. Nc6 Qe8 19. e4 Rf7 20. Rad1 Rd7 21. Qc4 Rd6 22. d5 a6 23. b4 b5 24. Qc5 Bf8 25. Qc3 Bg7 26. a3 f5 27. e5 Rd7 28. Qc5 Bf8 29. Qc3 Bg7 30. Qd3 Kg8 31. d6 cxd6 32. exd6 Qc8 33. Ne7+ Rxe7 1-0

[Event "GER-ch Net Amateur Gr-B Vor2"]
[Site "Playchess.com INT"]
[Date "2020.04.15"]
[Round "4"]
[White "Klein, Andreas"]
[Black "Diederichs, Karl"]
[Result "0-1"]
[ECO "C01"]
[WhiteElo "1459"]
[BlackElo "1392"]
[PlyCount "104"]
[EventDate "2020.04.15"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 196 Extra"]
[Source "ChessBase"]
[SourceDate "2020.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.07.31"]
[SourceQuality "1"]

1. e4 e6 2. d4 b6 3. Nd2 Bb7 4. c3 g6 5. Bd3 Bg7 6. Ngf3 Ne7 7. 0-0 d5 8. e5 c5 9. Re1 Nd7 10. Nf1 0-0 11. Bg5 f6 12. exf6 Nxf6 13. Rxe6 Bc8 14. Re1 Qd6 15. Ne5 Nf5 16. Qd2 Nd7 17. Bxf5 Rxf5 18. Nxd7 Bxd7 19. Ng3 Rf7 20. Re2 Raf8 21. Rae1 Bg4 22. f4 Bxe2 23. Rxe2 h6 24. Bh4 Qxf4 25. Qxf4 Rxf4 26. Be7 Re8 27. Bd6 Rxe2 28. Nxe2 Re4 29. Nf4 cxd4 30. Nxd5 dxc3 31. bxc3 Re1+ 32. Kf2 Ra1 33. a3 Rc1 34. Bb8 Bxc3 35. Nxc3 Rxc3 36. Bxa7 Rxa3 37. Bxb6 Kf7 38. Be3 g5 39. g3 Kf6 40. Ke2 Ke5 41. h4 Kf5 42. hxg5 hxg5 43. Bf2 Kg4 44. Kf1 Kh3 45. Ke2 g4 46. Be1 Kg2 47. Kd1 Rxg3 48. Bxg3 Kxg3 49. Ke1 Kh2 50. Kf1 g3 51. Ke2 g2 52. Kf2 g1Q+ 0-1

[Event "GER-ch Net Amateur Gr-B Vor2"]
[Site "Playchess.com INT"]
[Date "2020.04.15"]
[Round "2"]
[White "Sondermann, Dirk"]
[Black "Diederichs, Karl"]
[Result "1-0"]
[ECO "D31"]
[WhiteElo "1599"]
[BlackElo "1410"]
[PlyCount "48"]
[EventDate "2020.04.15"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 196 Extra"]
[Source "ChessBase"]
[SourceDate "2020.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.07.31"]
[SourceQuality "1"]

1. d4 e6 2. Nf3 d5 3. c4 c6 4. Nc3 Bd6 5. e3 Nd7 6. Qc2 f5 7. Bd3 Ngf6 8. 0-0 0-0 9. b3 Ne4 10. Bb2 Qf6 11. g3 h5 12. Ne2 g5 13. Nd2 h4 14. f4 hxg3 15. hxg3 gxf4 16. exf4 Rf7 17. Bxe4 fxe4 18. Kg2 Rg7 19. Qc3 Nb6 20. c5 Bxc5 21. dxc5 Qg6 22. Qxg7+ Qxg7 23. Bxg7 Kxg7 24. cxb6 axb6 1-0

[Event "GER-ch Net Amateur Gr-B Vor2"]
[Site "Playchess.com INT"]
[Date "2020.04.15"]
[Round "6"]
[White "Watermann, Bernd"]
[Black "Diederichs, Karl"]
[Result "1-0"]
[ECO "A40"]
[WhiteElo "1520"]
[BlackElo "1397"]
[PlyCount "61"]
[EventDate "2020.04.15"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 196 Extra"]
[Source "ChessBase"]
[SourceDate "2020.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.07.31"]
[SourceQuality "1"]

1. d4 b6 2. e3 Bb7 3. f4 f5 4. Nf3 Nf6 5. c3 e6 6. Bd3 Ne4 7. 0-0 d5 8. Ne5 g6 9. Bd2 Bg7 10. Be1 c5 11. Nd2 Nd7 12. Nxe4 dxe4 13. Bc4 Nxe5 14. fxe5 Qd7 15. Bh4 cxd4 16. cxd4 Bd5 17. Qe2 Bxc4 18. Qxc4 Rc8 19. Qb4 Bh6 20. Rfe1 g5 21. Bf2 f4 22. Rac1 Kf7 23. Rcd1 f3 24. g3 g4 25. d5 Bg7 26. dxe6+ Qxe6 27. Rd6 Qe7 28. Qb3+ Kf8 29. Qd5 Bxe5 30. Re6 Qf7 31. Qxe5 1-0

[Event "GER-ch Net Amateur Gr-B Vor1"]
[Site "Playchess.com INT"]
[Date "2020.04.14"]
[Round "2"]
[White "Braeutigam, Alexander"]
[Black "Diederichs, Karl"]
[Result "1-0"]
[ECO "D31"]
[WhiteElo "1634"]
[BlackElo "1489"]
[PlyCount "111"]
[EventDate "2020.04.14"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. d4 e6 2. c4 d5 3. Nc3 c6 4. Nf3 Bd6 5. e3 Nd7 6. Bd2 f5 7. g3 Ngf6 8. Bg2 0-0 9. 0-0 Ne4 10. c5 Bc7 11. a3 g5 12. h4 gxh4 13. Nxh4 Qg5 14. Nxe4 fxe4 15. Bh3 Rf6 16. Qg4 Qxg4 17. Bxg4 Nf8 18. Ng2 Ng6 19. Nf4 Nxf4 20. exf4 Rg6 21. Bh3 h5 22. Kg2 h4 23. Rg1 hxg3 24. fxg3 Kf7 25. Kf2 Bd7 26. Raf1 Rh8 27. Bg2 Rhg8 28. Bh3 Rh8 29. Rh1 Rgh6 30. Bg2 Kf6 31. g4 Rxh1 32. Rxh1 Rxh1 33. Bxh1 Kg7 34. Be3 e5 35. fxe5 Bxg4 36. Bg2 Bd8 37. Kg3 Be6 38. Bh3 Bf7 39. Bc8 b6 40. Bd7 bxc5 41. dxc5 Bc7 42. Bd4 Kg6 43. Kg4 Kg7 44. e6+ Kf8 45. exf7 Kxf7 46. Bxc6 Ke6 47. b4 a5 48. b5 Bb8 49. b6 Bh2 50. Bb5 Bb8 51. Be3 Be5 52. c6 d4 53. Bf4 d3 54. Bxe5 Kxe5 55. c7 d2 56. Be2 1-0

[Event "GER-ch Net Amateur Gr-B Vor1"]
[Site "Playchess.com INT"]
[Date "2020.04.14"]
[Round "3"]
[White "Diederichs, Karl"]
[Black "Alber, Jens Markus"]
[Result "0-1"]
[ECO "A48"]
[WhiteElo "1479"]
[BlackElo "1620"]
[PlyCount "70"]
[EventDate "2020.04.14"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. e3 Bg7 4. Bd3 0-0 5. Nbd2 d6 6. c3 Nbd7 7. 0-0 e5 8. Re1 c6 9. e4 Qc7 10. b3 Re8 11. Bc4 Nb6 12. Bd3 exd4 13. Nxd4 a6 14. Ba3 c5 15. N4f3 Ng4 16. h3 Ne5 17. Nxe5 Bxe5 18. Bb2 d5 19. exd5 Nxd5 20. c4 Nf6 21. Bxe5 Rxe5 22. Rxe5 Qxe5 23. Nf3 Qe7 24. Qd2 Be6 25. Re1 Qd6 26. Qc2 Rd8 27. Rd1 Qf4 28. Kf1 Ne8 29. a3 Nd6 30. Qe2 Re8 31. Qc2 Nf5 32. Re1 Ng7 33. Rd1 Bxh3 34. gxh3 Qxf3 35. Be2 Qh1# 0-1

[Event "GER-ch Net Amateur Gr-B Vor1"]
[Site "Playchess.com INT"]
[Date "2020.04.14"]
[Round "8"]
[White "Diederichs, Karl"]
[Black "Hertlein, Alexander"]
[Result "0-1"]
[ECO "D05"]
[WhiteElo "1434"]
[BlackElo "1655"]
[PlyCount "64"]
[EventDate "2020.04.14"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. e3 e6 4. Bd3 Be7 5. Nbd2 0-0 6. c3 b6 7. 0-0 Bb7 8. Re1 Nbd7 9. e4 dxe4 10. Nxe4 Nxe4 11. Bxe4 Bxe4 12. Rxe4 Nf6 13. Rh4 c5 14. Rh3 cxd4 15. Nxd4 Bc5 16. Be3 e5 17. Nf5 Bxe3 18. Nxe3 Qxd1+ 19. Rxd1 Rfd8 20. Rg3 Kf8 21. Re1 Rd2 22. Nf5 g6 23. Ne3 Nh5 24. Rf3 Rxb2 25. Ng4 Rxa2 26. Nxe5 f5 27. Nd7+ Kg7 28. Re7+ Kh6 29. g4 fxg4 30. Rff7 Kg5 31. Re5+ Kh4 32. Rxh7 Ra1+ 0-1

[Event "GER-ch Net Amateur Gr-B Vor1"]
[Site "Playchess.com INT"]
[Date "2020.04.14"]
[Round "6"]
[White "Diederichs, Karl"]
[Black "Kowalzick, Uwe"]
[Result "1-0"]
[ECO "D04"]
[WhiteElo "1439"]
[BlackElo "1326"]
[PlyCount "51"]
[EventDate "2020.04.14"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. e3 Bg4 4. h3 Bh5 5. g4 Bg6 6. Ne5 e6 7. h4 h6 8. Nxg6 fxg6 9. Bd3 Kf7 10. Qf3 Ke7 11. Bxg6 Nbd7 12. h5 Kd6 13. e4 e5 14. dxe5+ Nxe5 15. Bf4 Qe7 16. Bxe5+ Qxe5 17. Nc3 dxe4 18. Rd1+ Kc6 19. Bxe4+ Nxe4 20. Nxe4 Bb4+ 21. Kf1 Kb6 22. Qe3+ Bc5 23. Qb3+ Kc6 24. Qa4+ Kb6 25. b4 Qxe4 26. bxc5+ 1-0

[Event "GER-ch Net Amateur Gr-B Vor1"]
[Site "Playchess.com INT"]
[Date "2020.04.14"]
[Round "1"]
[White "Diederichs, Karl"]
[Black "Piskaykin, Bogdan"]
[Result "1-0"]
[ECO "A43"]
[WhiteElo "1465"]
[BlackElo "1620"]
[PlyCount "43"]
[EventDate "2020.04.14"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. d4 c5 2. Nf3 cxd4 3. Nxd4 Nf6 4. e3 a6 5. Bd3 e6 6. c3 Be7 7. Nd2 d5 8. 0-0 Nc6 9. Re1 0-0 10. Bc2 Qc7 11. Nxc6 bxc6 12. e4 dxe4 13. Nxe4 Nxe4 14. Rxe4 Bf6 15. Rg4 e5 16. Rg3 Bh4 17. Qh5 f5 18. Qxh4 e4 19. Bh6 Rf7 20. Bb3 g6 21. Bxf7+ Kh8 22. Qf6# 1-0

[Event "GER-ch Net Amateur Gr-B Vor1"]
[Site "Playchess.com INT"]
[Date "2020.04.14"]
[Round "7"]
[White "Erbach, Markus"]
[Black "Diederichs, Karl"]
[Result "1-0"]
[ECO "C01"]
[WhiteElo "1440"]
[BlackElo "1451"]
[PlyCount "71"]
[EventDate "2020.04.14"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. exd5 e5 4. dxe5 c6 5. c4 cxd5 6. Qxd5 Be7 7. Qxd8+ Bxd8 8. f4 Nc6 9. Nf3 Nb4 10. Na3 Be7 11. Bd2 a5 12. Be2 Bg4 13. 0-0 Bc5+ 14. Kh1 Bxf3 15. Bxf3 Nc6 16. Bxc6+ bxc6 17. Nc2 Ne7 18. Be3 Bxe3 19. Nxe3 Rb8 20. b3 0-0 21. Rfd1 Rfd8 22. g3 c5 23. Nd5 Nc6 24. Kg2 Nd4 25. Rd2 g6 26. Rad1 Kg7 27. Kf2 h6 28. Nc3 h5 29. Ne2 Kh6 30. Nxd4 cxd4 31. Rxd4 Rxd4 32. Rxd4 a4 33. Rd3 Ra8 34. b4 Rc8 35. c5 Rb8 36. a3 1-0

[Event "GER-ch Net Amateur Gr-B Vor1"]
[Site "Playchess.com INT"]
[Date "2020.04.14"]
[Round "9"]
[White "Grund, Erwin1111"]
[Black "Diederichs, Karl"]
[Result "1-0"]
[ECO "B00"]
[WhiteElo "1610"]
[BlackElo "1426"]
[PlyCount "83"]
[EventDate "2020.04.14"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 e6 2. d4 b6 3. f4 Bb7 4. Bd3 Ne7 5. Nf3 d5 6. e5 g6 7. c3 Bg7 8. 0-0 Nd7 9. Nbd2 c5 10. Ng5 cxd4 11. cxd4 f6 12. Nxe6 Qc8 13. Nxg7+ Kf7 14. exf6 Nxf6 15. f5 Kxg7 16. fxg6 Nxg6 17. Nf3 Qc7 18. Bg5 Raf8 19. Bxg6 hxg6 20. Bxf6+ Rxf6 21. Ne5 Rhf8 22. Rxf6 Rxf6 23. Qg4 Ba6 24. Rd1 Qc2 25. h3 Be2 26. Qd7+ Kh6 27. Re1 Qd2 28. Ra1 Qe3+ 29. Kh1 Qxd4 30. Ng4+ Bxg4 31. hxg4 Qxb2 32. Re1 Qf2 33. Rd1 Qh4+ 34. Kg1 Qf2+ 35. Kh1 Qxa2 36. g5+ Kxg5 37. Rxd5+ Kh6 38. Qh3+ Kg7 39. Rd7+ Kg8 40. Qh7+ Kf8 41. Qe7+ Kg8 42. Rd8+ 1-0

[Event "GER-ch Net Amateur Gr-B Vor1"]
[Site "Playchess.com INT"]
[Date "2020.04.14"]
[Round "4"]
[White "Lange, Lars"]
[Black "Diederichs, Karl"]
[Result "1-0"]
[ECO "A40"]
[WhiteElo "1538"]
[BlackElo "1468"]
[PlyCount "39"]
[EventDate "2020.04.14"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. d4 e6 2. c4 b6 3. e4 Bb7 4. Nc3 g6 5. Nf3 Bg7 6. Be2 Ne7 7. 0-0 d5 8. cxd5 exd5 9. e5 Nd7 10. Ne1 c5 11. Nb5 cxd4 12. Nd6+ Kf8 13. Nxb7 Qc7 14. Nd6 Bxe5 15. Nb5 Bxh2+ 16. Kh1 Qe5 17. Nf3 Qe4 18. Nxh2 Nf5 19. Bf3 Qe5 20. Re1 1-0

[Event "GER-ch Net Amateur Gr-B Vor1"]
[Site "Playchess.com INT"]
[Date "2020.04.14"]
[Round "5"]
[White "Schmitt, Clemens"]
[Black "Diederichs, Karl"]
[Result "1-0"]
[ECO "A13"]
[WhiteElo "1488"]
[BlackElo "1455"]
[PlyCount "71"]
[EventDate "2020.04.14"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. c4 e6 2. g3 b6 3. Bg2 Nc6 4. Nc3 Bb7 5. e3 Rb8 6. Nge2 Nb4 7. e4 d5 8. Qa4+ Bc6 9. Qb3 Nd3+ 10. Kf1 dxe4 11. Nxe4 f5 12. Nf6+ Nxf6 13. Bxc6+ Kf7 14. f3 Bc5 15. h4 Nh5 16. g4 Qd6 17. gxh5 Qxc6 18. Qxd3 Rhd8 19. Qc3 a5 20. Rh3 Bb4 21. Qe5 Bd6 22. Qc3 Bb4 23. Qe3 Bc5 24. Qg5 Be7 25. Qg2 Qxc4 26. h6 g6 27. h5 Rh8 28. hxg6+ hxg6 29. h7 Bd6 30. b3 Qc2 31. Rh6 f4 32. Bb2 Qxb2 33. Qxg6+ Kf8 34. Rc1 Qg7 35. Qxe6 Re8 36. Rf6+ 1-0

[Event "Niedersachsen-ch op-B"]
[Site "Verden an der Aller"]
[Date "2020.01.05"]
[Round "7"]
[White "Diederichs, Karl"]
[Black "Ramme, Georg"]
[Result "0-1"]
[ECO "D04"]
[WhiteElo "1530"]
[BlackElo "1632"]
[PlyCount "54"]
[EventDate "2020.01.02"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 d5 3. e3 Bg4 4. Be2 Nbd7 5. h3 Bh5 6. g4 Bg6 7. Ne5 Nxe5 8. dxe5 Ne4 9. h4 h6 10. f4 e6 11. Bd3 Be7 12. h5 Bh4+ 13. Ke2 Ng3+ 14. Kf3 Be4+ 15. Bxe4 dxe4+ 16. Kg2 Nxh1 17. Qxh1 f5 18. exf6 Bxf6 19. Kh3 c6 20. Qxe4 Qd5 21. Qg6+ Kf8 22. Kh2 Rd8 23. Nc3 Qf3 24. b3 Kg8 25. Ba3 Rd2+ 26. Ne2 Rxe2+ 27. Kg1 Qg2# 0-1

[Event "Niedersachsen-ch op-B"]
[Site "Verden an der Aller"]
[Date "2020.01.04"]
[Round "5"]
[White "Diederichs, Karl"]
[Black "Thomann, Josef"]
[Result "0-1"]
[ECO "D00"]
[WhiteElo "1530"]
[BlackElo "1697"]
[PlyCount "50"]
[EventDate "2020.01.02"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 d5 2. e3 Nf6 3. Bd3 c5 4. c3 Nc6 5. Nd2 e6 6. f4 cxd4 7. cxd4 Be7 8. a3 0-0 9. Ngf3 Qc7 10. Ne5 Nd7 11. 0-0 f6 12. Bxh7+ Kxh7 13. Qh5+ Kg8 14. Ng6 Nb6 15. Rf3 Bd6 16. Rh3 e5 17. Nh8 Bxh3 18. Qxh3 Qc8 19. Qh4 Qf5 20. fxe5 fxe5 21. dxe5 Nxe5 22. Nf3 Nxf3+ 23. gxf3 Qxf3 24. Bd2 Rf4 25. Rf1 Qxf1# 0-1

[Event "Niedersachsen-ch op-B"]
[Site "Verden an der Aller"]
[Date "2020.01.04"]
[Round "6"]
[White "Schmugge, Jens"]
[Black "Diederichs, Karl"]
[Result "1/2-1/2"]
[ECO "C01"]
[WhiteElo "1663"]
[BlackElo "1530"]
[PlyCount "107"]
[EventDate "2020.01.02"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Bd3 Nf6 5. Bf4 c5 6. dxc5 Bxc5 7. Qe2+ Be7 8. Nf3 Bg4 9. h3 Bxf3 10. Qxf3 Nc6 11. 0-0 0-0 12. Nd2 Bc5 13. Nb3 b6 14. Rfd1 a5 15. c4 a4 16. Nxc5 bxc5 17. cxd5 Nd4 18. Qg3 Nh5 19. Bc7 Nxg3 20. Bxd8 Raxd8 21. fxg3 Rxd5 22. Bb5 a3 23. bxa3 Rfd8 24. Kf2 Nxb5 25. Rxd5 Rxd5 26. Rb1 Rd2+ 27. Kg1 c4 28. Rxb5 g6 29. Rc5 Rxa2 30. Rxc4 Rxa3 31. Kf2 Kg7 32. Rf4 g5 33. Rf3 Ra2+ 34. Kg1 Kg6 35. g4 f6 36. Kh2 Ra4 37. Kg3 h6 38. Kf2 Ra6 39. Kg3 h5 40. gxh5+ Kxh5 41. Rd3 f5 42. Rc3 f4+ 43. Kf3 Kh4 44. Kf2 g4 45. hxg4 Kxg4 46. Rf3 Ra2+ 47. Kg1 Re2 48. Kf1 Rd2 49. Kg1 Rd1+ 50. Kf2 Rh1 51. Rh3 Rxh3 52. gxh3+ Kxh3 53. Kf3 Kh2 54. Kxf4 1/2-1/2

[Event "Niedersachsen-ch op-B"]
[Site "Verden an der Aller"]
[Date "2020.01.03"]
[Round "4"]
[White "Diederichs, Karl"]
[Black "Mednik, Michael"]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "1530"]
[PlyCount "25"]
[EventDate "2020.01.02"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 d5 2. e3 Bf5 3. Nf3 e6 4. h3 c5 5. Be2 Nc6 6. Ne5 Nf6 7. g4 Bg6 8. h4 h6 9. Nxg6 fxg6 10. Bd3 Ne7 11. c3 Qc7 12. Qa4+ Qc6 13. Bb5 1-0

[Event "Niedersachsen-ch op-B"]
[Site "Verden an der Aller"]
[Date "2020.01.03"]
[Round "3"]
[White "Leppert, Hans Juergen"]
[Black "Diederichs, Karl"]
[Result "1/2-1/2"]
[ECO "A13"]
[WhiteElo "1816"]
[BlackElo "1530"]
[PlyCount "68"]
[EventDate "2020.01.02"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. c4 e6 2. Nc3 d5 3. e3 c6 4. Nf3 Bd6 5. d4 Nd7 6. Qc2 f5 7. Be2 Ngf6 8. a3 a5 9. Rb1 Ne4 10. b4 axb4 11. axb4 Ndf6 12. Nd2 Qc7 13. f4 Nxc3 14. Qxc3 Ne4 15. Nxe4 fxe4 16. 0-0 0-0 17. c5 Be7 18. Bd2 Rf6 19. Ra1 Rb8 20. b5 Rg6 21. bxc6 Qxc6 22. Qa5 b6 23. cxb6 Rxb6 24. Rfc1 Qb7 25. Rxc8+ Kf7 26. Bh5 Rb1+ 27. Rxb1 Qxb1+ 28. Kf2 Bh4+ 29. g3 Qh1 30. Bxg6+ Kxg6 31. gxh4 Qxh2+ 32. Ke1 Qg1+ 33. Ke2 Qg4+ 34. Ke1 Qg1+ 1/2-1/2

[Event "Niedersachsen-ch op-B"]
[Site "Verden an der Aller"]
[Date "2020.01.02"]
[Round "1"]
[White "Diederichs, Karl"]
[Black "Buecker, Timo"]
[Result "1/2-1/2"]
[ECO "A45"]
[WhiteElo "1530"]
[BlackElo "1761"]
[PlyCount "61"]
[EventDate "2020.01.02"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 Nf6 2. e3 Nc6 3. Bd3 e5 4. c3 e4 5. Bc2 d5 6. Nd2 Bg4 7. f3 Bh5 8. h3 Bd6 9. g4 Bg3+ 10. Kf1 Bg6 11. f4 h5 12. g5 Nd7 13. h4 Bf5 14. Kg2 Bxf4 15. exf4 Bg4 16. Qe1 Nb6 17. Bd1 Qd7 18. Ngf3 f6 19. b3 0-0-0 20. Ng1 Qf5 21. Nf1 fxg5 22. hxg5 Ne7 23. Ng3 Qe6 24. Nxh5 Bxh5 25. Bxh5 Rxh5 26. Rxh5 Qg4+ 27. Qg3 Qxh5 28. Qh3+ Qxh3+ 29. Nxh3 g6 30. Nf2 Nf5 31. Ng4 1/2-1/2

[Event "Niedersachsen-ch op-B"]
[Site "Verden an der Aller"]
[Date "2020.01.02"]
[Round "2"]
[White "Sturm, Hubert"]
[Black "Diederichs, Karl"]
[Result "1-0"]
[ECO "C18"]
[WhiteElo "1716"]
[BlackElo "1530"]
[PlyCount "77"]
[EventDate "2020.01.02"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Bxc3+ 6. bxc3 c4 7. f4 Ne7 8. Nf3 Nf5 9. Be2 f6 10. 0-0 Nd7 11. Qe1 fxe5 12. fxe5 0-0 13. a4 Re8 14. g4 Ne7 15. Bg5 h6 16. Bd2 Rf8 17. Qh4 Ng6 18. Qg3 Nh8 19. h4 Nf7 20. g5 h5 21. g6 Nh6 22. Qh3 Nf5 23. Ng5 Re8 24. Bxh5 Qb6 25. a5 Qb2 26. Rac1 Nxd4 27. cxd4 Qxd4+ 28. Be3 Qxe5 29. c3 Qd6 30. Be2 Nf6 31. h5 e5 32. Qh4 e4 33. Bd4 Re7 34. h6 gxh6 35. Rxf6 Qa3 36. Rcf1 Bh3 37. Qxh3 hxg5 38. Rf8+ Rxf8 39. Qh8# 1-0

[Event "Hannover Bezirks-ch U14"]
[Site "Lehrte"]
[Date "2019.10.06"]
[Round "7.3"]
[White "Diederichs, Karl"]
[Black "Dupont, Paul1111"]
[Result "1-0"]
[ECO "D00"]
[WhiteElo "1477"]
[BlackElo "1137"]
[PlyCount "83"]
[EventDate "2019.10.03"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 d5 2. e3 Nf6 3. Bd3 b6 4. Nd2 Ba6 5. Bxa6 Nxa6 6. c3 c5 7. Qa4+ Qd7 8. Qxa6 c4 9. b3 b5 10. Qa3 e6 11. Qb2 Bd6 12. Ngf3 Qc7 13. h3 0-0 14. Qc2 h6 15. b4 a5 16. bxa5 Qxa5 17. 0-0 b4 18. cxb4 Bxb4 19. Ne5 Ra6 20. Rd1 Bc3 21. Bb2 Bxb2 22. Qxb2 c3 23. Qc2 cxd2 24. Qxd2 Qxd2 25. Rxd2 Ne4 26. Rc2 f6 27. Nd3 Rb8 28. Rac1 Nd6 29. Nc5 Rab6 30. Nd7 Nc4 31. Nxb6 Rxb6 32. a4 Ra6 33. Ra2 g5 34. Rb1 f5 35. a5 h5 36. Ra4 Kg7 37. Rab4 Rxa5 38. Rb8 h4 39. R1b7+ Kg6 40. Rg8+ Kf6 41. Rh8 Nd6 42. Rh6# 1-0

[Event "Hannover Bezirks-ch U14"]
[Site "Lehrte"]
[Date "2019.10.05"]
[Round "6.3"]
[White "Ahmadi, Saman"]
[Black "Diederichs, Karl"]
[Result "0-1"]
[ECO "C00"]
[WhiteElo "1241"]
[BlackElo "1477"]
[PlyCount "54"]
[EventDate "2019.10.03"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 e6 2. Nc3 d5 3. exd5 exd5 4. Qe2+ Be7 5. d4 Nf6 6. h3 Bf5 7. Nf3 Nc6 8. a3 0-0 9. Bg5 Re8 10. Be3 Ne4 11. Nxe4 Bxe4 12. 0-0-0 Bf6 13. g3 Qd7 14. Bg2 Na5 15. Rhg1 Qc6 16. Kb1 Nc4 17. Nd2 Bxc2+ 18. Ka1 Bxd1 19. Rxd1 Nxd2 20. Rxd2 Qe6 21. Qb5 Qc6 22. Qb3 Qc1+ 23. Ka2 c6 24. Qxb7 Rab8 25. Qxa7 Ra8 26. Qb7 Reb8 27. Qc7 Rxa3+ 0-1

[Event "Hannover Bezirks-ch U14"]
[Site "Lehrte"]
[Date "2019.10.05"]
[Round "5.3"]
[White "Diederichs, Karl"]
[Black "Kieselbach, Marvin"]
[Result "1/2-1/2"]
[ECO "C00"]
[WhiteElo "1477"]
[BlackElo "1626"]
[PlyCount "20"]
[EventDate "2019.10.03"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 e6 2. d3 d5 3. f3 Bd6 4. Be3 c6 5. Nd2 Qc7 6. g3 h5 7. f4 e5 8. f5 d4 9. Bf2 Nf6 10. Be2 b5 1/2-1/2

[Event "Hannover Bezirks-ch U14"]
[Site "Lehrte"]
[Date "2019.10.04"]
[Round "3.2"]
[White "Amrhein, Dennis"]
[Black "Diederichs, Karl"]
[Result "1-0"]
[ECO "D10"]
[WhiteElo "1507"]
[BlackElo "1477"]
[PlyCount "123"]
[EventDate "2019.10.03"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 e6 2. Bf4 d5 3. e3 c5 4. c3 cxd4 5. cxd4 Nf6 6. Nc3 Bb4 7. Qb3 Qa5 8. Bd3 Bd7 9. a3 Bxc3+ 10. Qxc3 Qxc3+ 11. bxc3 0-0 12. c4 dxc4 13. Bxc4 Rc8 14. Bd3 Bc6 15. f3 Nd5 16. Ne2 h6 17. e4 Nxf4 18. Nxf4 Rd8 19. Ne2 e5 20. d5 Be8 21. 0-0 Nd7 22. Rfc1 Rdc8 23. Ng3 g6 24. Rab1 Nc5 25. Be2 b6 26. Nh1 Rc7 27. Nf2 h5 28. Nd3 Rac8 29. Nxe5 f6 30. Nd3 Nxd3 31. Rxc7 Rxc7 32. Bxd3 Rc3 33. Rd1 Rxa3 34. Kf2 Rc3 35. Ke3 Rc8 36. f4 b5 37. e5 f5 38. e6 Kf8 39. d6 Bc6 40. Rc1 Ke8 41. d7+ Bxd7 42. exd7+ Kxd7 43. Rxc8 Kxc8 44. Bxb5 Kd8 45. Kd4 Ke7 46. Ke5 a5 47. Bc6 h4 48. Bb5 Kf7 49. Kd6 Kf6 50. Be8 g5 51. fxg5+ Kxg5 52. h3 Kf4 53. Bc6 Kg3 54. Kc5 a4 55. Kb4 f4 56. Kxa4 f3 57. Bxf3 Kf4 58. Kb4 Kg3 59. Kc4 Kf4 60. Kd4 Kf5 61. Ke3 Kg5 62. Ke4 1-0

[Event "Hannover Bezirks-ch U14"]
[Site "Lehrte"]
[Date "2019.10.04"]
[Round "4.5"]
[White "Diederichs, Karl"]
[Black "Gensch, Malte"]
[Result "1-0"]
[ECO "D00"]
[WhiteElo "1477"]
[PlyCount "31"]
[EventDate "2019.10.03"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 d5 2. e3 Nc6 3. Bd3 Nf6 4. Nd2 e6 5. c3 b6 6. f4 Bb7 7. Ngf3 Nb8 8. Ne5 Nbd7 9. Qf3 Nxe5 10. fxe5 Ne4 11. Nxe4 dxe4 12. Bxe4 Bxe4 13. Qxe4 f5 14. exf6 Qxf6 15. Qxa8+ Kf7 16. Rf1 1-0

[Event "Hannover Bezirks-ch U14"]
[Site "Lehrte"]
[Date "2019.10.03"]
[Round "1.4"]
[White "Brandes, Florian Otto"]
[Black "Diederichs, Karl"]
[Result "0-1"]
[ECO "C00"]
[BlackElo "1477"]
[PlyCount "50"]
[EventDate "2019.10.03"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 e6 2. d3 b6 3. b3 Nc6 4. Bb2 e5 5. Nf3 d6 6. Be2 Be7 7. Nc3 Bb7 8. Qd2 Nf6 9. 0-0-0 Nd7 10. g3 h6 11. h4 f6 12. g4 Nd4 13. Nd5 Nxf3 14. Bxf3 Bxd5 15. exd5 0-0 16. Be4 f5 17. Bxf5 Bxh4 18. Bxd7 Bg5 19. Be6+ Kh8 20. Bc3 Bxd2+ 21. Bxd2 Rxf2 22. Rhg1 g5 23. Rg3 Qf6 24. Rh1 e4 25. dxe4 Qa1# 0-1

[Event "Hannover Bezirks-ch U14"]
[Site "Lehrte"]
[Date "2019.10.03"]
[Round "2.1"]
[White "Diederichs, Karl"]
[Black "Zweigait, Leon"]
[Result "0-1"]
[ECO "B45"]
[WhiteElo "1477"]
[BlackElo "1714"]
[PlyCount "108"]
[EventDate "2019.10.03"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 e6 3. Nc3 c5 4. e4 cxd4 5. Nxd4 Nc6 6. Nxc6 bxc6 7. Bg5 Be7 8. f4 Qb6 9. Qc1 Ng4 10. Qd2 Bxg5 11. fxg5 Rb8 12. Na4 Qb4 13. Qxb4 Rxb4 14. Nc3 Rxb2 15. Kd2 d5 16. exd5 cxd5 17. Nb5 a6 18. a4 Rb4 19. c3 Rb2+ 20. Kc1 Rf2 21. Nc7+ Kd7 22. Nxa6 Bxa6 23. Bxa6 Rxg2 24. Rb1 Ra8 25. Bb5+ Kd6 26. Rb2 Rxb2 27. Kxb2 Ne3 28. Re1 Nc4+ 29. Bxc4 dxc4 30. Rf1 Ke7 31. Ra1 Ra5 32. h4 e5 33. Ka3 e4 34. Kb4 Ra6 35. Kxc4 f5 36. gxf6+ gxf6 37. Kb5 Ra8 38. a5 f5 39. a6 f4 40. a7 e3 41. Kc4 Ke6 42. Kd3 Kf5 43. c4 Kg4 44. c5 Kf3 45. Rf1+ Kg3 46. Ra1 Kf2 47. Ra2+ Kf3 48. c6 e2 49. Ra1 Kf2 50. Ra2 f3 51. c7 Kf1 52. Rc2 e1N+ 53. Ke3 Nxc2+ 54. Kxf3 Nd4+ 0-1

[Event "Langenhagen Summer op 1st"]
[Site "Langenhagen"]
[Date "2019.07.07"]
[Round "7"]
[White "Farokhi, Darian"]
[Black "Diederichs, Karl"]
[Result "1-0"]
[ECO "C01"]
[WhiteElo "1110"]
[BlackElo "1520"]
[PlyCount "43"]
[EventDate "2019.07.04"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. c4 c6 5. Nc3 Bb4 6. a3 Bxc3+ 7. bxc3 Bf5 8. Qb3 Qe7+ 9. Be3 Nf6 10. Nf3 0-0 11. Be2 Re8 12. 0-0 Ng4 13. Bf4 Qd7 14. Rfe1 dxc4 15. Bxc4 b5 16. Bxf7+ Kf8 17. Rxe8+ Qxe8 18. Bxe8 Kxe8 19. Re1+ Kd8 20. Qg8+ Kd7 21. Qf7+ Kc8 22. Re8# 1-0

[Event "Langenhagen Summer op 1st"]
[Site "Langenhagen"]
[Date "2019.07.06"]
[Round "6"]
[White "Diederichs, Karl"]
[Black "Szymanski, Andreas"]
[Result "1-0"]
[ECO "A48"]
[WhiteElo "1520"]
[BlackElo "1371"]
[PlyCount "39"]
[EventDate "2019.07.04"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. d4 Nf6 2. e3 g6 3. Nf3 Bg7 4. Nc3 d6 5. e4 0-0 6. Be3 Nc6 7. Qd2 e5 8. d5 Ne7 9. Be2 Nd7 10. h4 f5 11. exf5 gxf5 12. Bh6 f4 13. Bxg7 Kxg7 14. Ng5 Nf6 15. 0-0-0 Bf5 16. Bd3 Bd7 17. Bb5 h6 18. Bxd7 hxg5 19. Be6 g4 20. g3 1-0

[Event "Langenhagen Summer op 1st"]
[Site "Langenhagen"]
[Date "2019.07.06"]
[Round "5"]
[White "Von Knobloch, Benedikt"]
[Black "Diederichs, Karl"]
[Result "1-0"]
[ECO "C02"]
[WhiteElo "1545"]
[BlackElo "1520"]
[PlyCount "53"]
[EventDate "2019.07.04"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. Nf3 e6 2. e4 d5 3. e5 c5 4. c3 Nc6 5. d4 cxd4 6. cxd4 Qb6 7. Nc3 Bb4 8. a3 Bxc3+ 9. bxc3 Nge7 10. Bd3 Bd7 11. Qc2 0-0-0 12. Rb1 Qc7 13. 0-0 Kb8 14. a4 Na5 15. Ba3 Nc8 16. Ng5 Nc4 17. Bxc4 dxc4 18. Nxf7 Bxa4 19. Qxa4 Qxf7 20. Qxc4 Nb6 21. Qb3 h5 22. Bd6+ Kc8 23. Qb5 Qd7 24. Qc5+ Qc6 25. Rb5 Rd7 26. Ra1 Nc4 27. Qxc6+ 1-0

[Event "Langenhagen Summer op 1st"]
[Site "Langenhagen"]
[Date "2019.07.05"]
[Round "4"]
[White "Diederichs, Karl"]
[Black "Brockmann, Marc"]
[Result "0-1"]
[ECO "D00"]
[WhiteElo "1520"]
[BlackElo "1646"]
[PlyCount "100"]
[EventDate "2019.07.04"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. d4 d5 2. e3 Nf6 3. Bd3 Bg4 4. f3 Bh5 5. c3 e6 6. Nd2 c5 7. Qe2 Nc6 8. Bb5 Be7 9. a3 Bg6 10. Nh3 h6 11. Nf4 Bh7 12. Nd3 c4 13. Ne5 Qb6 14. Bxc6+ bxc6 15. e4 Qc7 16. 0-0 Bd6 17. exd5 cxd5 18. Qe3 0-0 19. f4 Ne4 20. Nexc4 Nxd2 21. Nxd2 Rab8 22. b4 Rfc8 23. Bb2 Bc2 24. Rac1 Ba4 25. c4 dxc4 26. Rxc4 Qe7 27. Qg3 Qf8 28. Rxc8 Rxc8 29. Ne4 Rc2 30. Ba1 Be7 31. Nc5 Bxc5 32. dxc5 Rd2 33. Be5 Bc6 34. Bd6 Qe8 35. Rc1 Rxg2+ 36. Qxg2 Bxg2 37. Kxg2 Qc6+ 38. Kg3 a6 39. a4 Qxa4 40. Rb1 Qc6 41. Rd1 Qb5 42. Rd4 Kh7 43. Bc7 Qc6 44. Ba5 g5 45. Rd6 Qe4 46. fxg5 hxg5 47. Rb6 g4 48. c6 Qf3+ 49. Kh4 Kg6 50. c7 Qh3# 0-1

[Event "Langenhagen Summer op 1st"]
[Site "Langenhagen"]
[Date "2019.07.05"]
[Round "3"]
[White "Rehbein, Vitus"]
[Black "Diederichs, Karl"]
[Result "0-1"]
[ECO "B15"]
[WhiteElo "1356"]
[BlackElo "1520"]
[PlyCount "58"]
[EventDate "2019.07.04"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 c6 4. Bd3 Bb4 5. Nge2 Ne7 6. e5 c5 7. a3 Bxc3+ 8. bxc3 c4 9. Nf4 cxd3 10. Qxd3 b6 11. Nh5 Kd7 12. 0-0 Ba6 13. Qd2 Bxf1 14. Kxf1 Qf8 15. c4 Nbc6 16. Qc3 Rc8 17. c5 Nf5 18. Be3 Na5 19. Rb1 Nc4 20. g4 Nfxe3+ 21. fxe3 f6 22. exf6 g6 23. Ng3 Qxf6+ 24. Ke2 Rhf8 25. Rf1 Qh4 26. Ke1 Qxh2 27. Ne2 Rxf1+ 28. Kxf1 Rf8+ 29. Ke1 Qh1+ 0-1

[Event "Langenhagen Summer op 1st"]
[Site "Langenhagen"]
[Date "2019.07.04"]
[Round "2"]
[White "Diederichs, Karl"]
[Black "Lavitch, Evgenij"]
[Result "0-1"]
[ECO "D00"]
[WhiteElo "1520"]
[BlackElo "1687"]
[PlyCount "156"]
[EventDate "2019.07.04"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. d4 d5 2. e3 Nf6 3. Bd3 Nc6 4. c3 e5 5. Nd2 e4 6. Bb5 Bd7 7. Bxc6 Bxc6 8. Ne2 Bd6 9. Ng3 Bxg3 10. fxg3 Bb5 11. Qb3 Ba6 12. c4 c6 13. Qc3 Rc8 14. b4 dxc4 15. Nxc4 Bxc4 16. Qxc4 Qd5 17. Qc3 0-0 18. Ba3 Rfe8 19. 0-0 Qb5 20. Rad1 Nd5 21. Qb3 Ra8 22. Rf2 a5 23. Rb1 a4 24. Qd1 Nc3 25. Qf1 Nxb1 26. Qxb1 Qd3 27. Qc1 Re6 28. Rc2 h6 29. Rc3 Qe2 30. h3 Qxa2 31. Rc2 Qd5 32. Rc5 Qd7 33. b5 Rc8 34. Qc4 Ree8 35. b6 Ra8 36. Kh2 Qe6 37. Qc3 Qb3 38. Qc1 Qxb6 39. Rc3 Ra5 40. Bb2 Rb5 41. Ba3 Rb1 42. Qc2 Rb3 43. Bc5 Rxc3 44. Qxc3 Qb5 45. Ba3 b6 46. Bb2 f6 47. h4 c5 48. dxc5 Qxc5 49. Qd2 a3 50. Bd4 Qd6 51. Qa2+ Kh8 52. Qf7 Qe6 53. Qb7 a2 54. Qa6 b5 55. Qxb5 Ra8 56. Ba1 Qa6 57. Qb2 Qc6 58. g4 Qd6+ 59. g3 Qd3 60. Qb7 Rd8 61. g5 hxg5 62. hxg5 Qe2+ 63. Kh3 Qf1+ 64. Kg4 Qxa1 65. Qe7 Qd1+ 66. Kf5 a1Q 67. Kg6 Qd7 68. Qxe4 Qe8+ 69. Qxe8+ Rxe8 70. Kf7 Qe5 71. gxf6 Qe6+ 72. Kg6 Qxf6+ 73. Kh5 Re5+ 74. Kg4 Qg5+ 75. Kf3 Qxe3+ 76. Kg2 Rg5 77. Kh1 Qe2 78. g4 Ra5 0-1

[Event "Langenhagen Summer op 1st"]
[Site "Langenhagen"]
[Date "2019.07.04"]
[Round "1"]
[White "Jaekel, Michael"]
[Black "Diederichs, Karl"]
[Result "1/2-1/2"]
[ECO "C00"]
[WhiteElo "1772"]
[BlackElo "1520"]
[PlyCount "26"]
[EventDate "2019.07.04"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. e4 e6 2. c4 Bc5 3. Nc3 c6 4. d4 Bb4 5. Nf3 Nf6 6. Bd3 d5 7. Qc2 c5 8. cxd5 exd5 9. Bb5+ Nc6 10. e5 Ne4 11. 0-0 Bf5 12. Bxc6+ bxc6 13. Nxe4 Bxe4 1/2-1/2

[Event "Niedersachsen-ch op B"]
[Site "Verden"]
[Date "2019.01.06"]
[Round "7"]
[White "Diederichs, Karl"]
[Black "Jungmann, Oleg"]
[Result "1-0"]
[ECO "D00"]
[WhiteElo "1341"]
[BlackElo "1415"]
[PlyCount "120"]
[EventDate "2019.01.03"]
[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 e6 2. e3 d5 3. Bd3 c5 4. c3 Nf6 5. Nd2 Nc6 6. f4 cxd4 7. cxd4 Bd7 8. a3 Rc8 9. Ngf3 Qa5 10. 0-0 Ne7 11. Ne5 Nf5 12. Ndf3 h6 13. Bd2 Qb6 14. Nxd7 Nxd7 15. Bxf5 exf5 16. Bc3 Nf6 17. Rc1 Bd6 18. Qa4+ Ke7 19. Ne5 Bxe5 20. fxe5 Ne4 21. Rxf5 Ke6 22. Rff1 Rc4 23. Qd1 f6 24. Qg4+ Kf7 25. Qd7+ Kg6 26. Qxd5 Qc6 27. Qxc6 Rxc6 28. exf6 gxf6 29. Rc2 Rd8 30. Rfc1 Rdc8 31. g3 f5 32. Kg2 h5 33. h4 a6 34. Kf3 Rd8 35. Kf4 Rd5 36. Kf3 Nf6 37. Bb4 Re6 38. Rc5 Rxc5 39. Rxc5 Ng4 40. Bd2 Nh2+ 41. Ke2 Ng4 42. Rc7 Rc6 43. Rxb7 Nf6 44. Rb3 Ne4 45. Be1 Kf7 46. Kf3 Rc1 47. Ke2 Rc2+ 48. Kd3 Rc6 49. Rb7+ Kg6 50. Rb8 Kg7 51. Bc3 Kf7 52. Be1 Kg7 53. Re8 Rb6 54. Re5 Kf6 55. b4 Rc6 56. Ke2 Rc1 57. Ra5 Rc6 58. Kf3 Re6 59. Kf4 Nd6 60. Re5 Kf7 1-0

[Event "Niedersachsen-ch op B"]
[Site "Verden"]
[Date "2019.01.05"]
[Round "5"]
[White "Diederichs, Karl"]
[Black "Scheidt, Mike Niklas"]
[Result "1/2-1/2"]
[ECO "D00"]
[WhiteElo "1341"]
[BlackElo "1561"]
[PlyCount "106"]
[EventDate "2019.01.03"]
[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. e3 e6 3. Bd3 f5 4. f4 Nf6 5. Nf3 Be7 6. 0-0 0-0 7. Ne5 Ne4 8. Bxe4 fxe4 9. Bd2 c5 10. c3 Nd7 11. Be1 Nxe5 12. fxe5 Qb6 13. Rxf8+ Bxf8 14. Qc2 Bd7 15. Nd2 Rc8 16. Rc1 g6 17. Bh4 Bg7 18. Kh1 Bh6 19. Bf2 Rf8 20. Kg1 Bb5 21. Qb3 Rc8 22. Ra1 cxd4 23. cxd4 Qa5 24. Qd1 Bd3 25. Nb3 Qb4 26. Rc1 Rc6 27. Rxc6 bxc6 28. Qc1 Bc4 29. Qc3 Qxc3 30. bxc3 Bxb3 31. axb3 Kf7 32. h4 Ke8 33. Kf1 Kd8 34. Ke2 Kc7 35. Kd2 Kb6 36. Kc2 a5 37. Kb2 Kb5 38. g4 Bf8 39. Be1 a4 40. g5 c5 41. Bd2 axb3 42. Kxb3 c4+ 43. Ka2 Ka4 44. Be1 h6 45. gxh6 Bxh6 46. Bf2 Bf8 47. Be1 Ba3 48. Bd2 Be7 49. Be1 g5 50. hxg5 Bxg5 51. Bf2 Be7 52. Be1 Bd8 53. Kb2 Be7 1/2-1/2

[Event "Niedersachsen-ch op B"]
[Site "Verden"]
[Date "2019.01.05"]
[Round "6"]
[White "Lapehn, Klaus"]
[Black "Diederichs, Karl"]
[Result "1-0"]
[ECO "C07"]
[WhiteElo "1627"]
[BlackElo "1341"]
[PlyCount "89"]
[EventDate "2019.01.03"]
[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. Nd2 c5 4. dxc5 Bxc5 5. Nb3 Bb6 6. exd5 Qxd5 7. Qxd5 exd5 8. Nf3 Nf6 9. Be2 0-0 10. 0-0 Re8 11. Bb5 Bd7 12. Bxd7 Nbxd7 13. Bf4 Ne4 14. Nbd4 Bxd4 15. Nxd4 Ndc5 16. Rad1 Ne6 17. Be3 Nxd4 18. Rxd4 Red8 19. Rfd1 Nf6 20. Bg5 Rd6 21. Bxf6 Rxf6 22. Rxd5 h6 23. Rd8+ Rxd8 24. Rxd8+ Kh7 25. Rd7 Rc6 26. c3 Rb6 27. b3 Ra6 28. a4 b5 29. Rd4 Rb6 30. Rb4 bxa4 31. Rxb6 axb6 32. bxa4 Kg6 33. Kf1 Kf6 34. Ke2 Ke6 35. Kd3 Kd5 36. c4+ Kc5 37. Kc3 g5 38. g4 f6 39. h3 Kd6 40. Kb4 Kc6 41. f3 Kc7 42. Kb5 Kb7 43. c5 bxc5 44. Kxc5 Ka6 45. Kd6 1-0

[Event "Niedersachsen-ch op B"]
[Site "Verden"]
[Date "2019.01.04"]
[Round "3"]
[White "Diederichs, Karl"]
[Black "Frankiewicz, Marcus"]
[Result "1/2-1/2"]
[ECO "D00"]
[WhiteElo "1341"]
[BlackElo "1711"]
[PlyCount "74"]
[EventDate "2019.01.03"]
[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. e3 Nf6 3. Bd3 e6 4. Nd2 Be7 5. f4 c5 6. c3 Nc6 7. Ngf3 Ng4 8. Qe2 f5 9. 0-0 0-0 10. Ne5 Ngxe5 11. fxe5 a6 12. Rf3 b5 13. Rh3 g6 14. Qf2 Rf7 15. Qg3 c4 16. Be2 Rb8 17. Nf3 a5 18. Nh4 Rg7 19. Nf3 g5 20. Ne1 g4 21. Rh5 Qe8 22. Rh4 Bxh4 23. Qxh4 Qe7 24. Qg3 b4 25. Bd2 h5 26. h4 bxc3 27. Bxc3 a4 28. a3 Na7 29. Bb4 Qe8 30. Rb1 Nb5 31. Rc1 Na7 32. Rb1 Nc6 33. Bc3 Ne7 34. Qf2 Ng6 35. g3 Rgb7 36. Bd1 Bd7 37. Ng2 Kg7 1/2-1/2

[Event "Niedersachsen-ch op B"]
[Site "Verden"]
[Date "2019.01.04"]
[Round "4"]
[White "Tenninger, Joerg"]
[Black "Diederichs, Karl"]
[Result "1/2-1/2"]
[ECO "D32"]
[WhiteElo "1489"]
[BlackElo "1341"]
[PlyCount "62"]
[EventDate "2019.01.03"]
[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 e6 2. c4 d5 3. Nc3 c5 4. Nf3 Nc6 5. e3 cxd4 6. Nxd4 Nxd4 7. Qxd4 Nf6 8. a3 b6 9. cxd5 Nxd5 10. Nxd5 Qxd5 11. Qxd5 exd5 12. Bb5+ Bd7 13. Bxd7+ Kxd7 14. Ke2 Bc5 15. b4 Bd6 16. Bb2 f6 17. Rhd1 Ke6 18. Rd3 Rad8 19. Rad1 Be5 20. Bd4 Rd7 21. Rc3 Rhd8 22. b5 Bd6 23. Rc6 Rc7 24. Rdc1 Rdc8 25. Rxc7 Rxc7 26. Rxc7 Bxc7 27. h3 h5 28. Kf3 g5 29. g4 h4 30. Ke2 f5 31. Kf3 f4 1/2-1/2

[Event "Niedersachsen-ch op B"]
[Site "Verden"]
[Date "2019.01.03"]
[Round "1"]
[White "Diederichs, Karl"]
[Black "Bischoff, Norbert"]
[Result "1/2-1/2"]
[ECO "D00"]
[WhiteElo "1341"]
[BlackElo "1508"]
[PlyCount "41"]
[EventDate "2019.01.03"]
[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 Nf6 2. e3 d5 3. Bd3 e6 4. Nd2 c5 5. c3 Nc6 6. f4 Be7 7. Ngf3 0-0 8. 0-0 c4 9. Bc2 b5 10. Ne5 Qb6 11. Rf3 Bb7 12. Rh3 g6 13. Qe1 Rfd8 14. Qg3 Ne4 15. Nxe4 dxe4 16. Bxe4 Nxd4 17. exd4 Bxe4 18. Be3 Rac8 19. d5 Bc5 20. dxe6 Qxe6 21. Bxc5 1/2-1/2

[Event "Niedersachsen-ch op B"]
[Site "Verden"]
[Date "2019.01.03"]
[Round "2"]
[White "Paufler, Patrick"]
[Black "Diederichs, Karl"]
[Result "1-0"]
[ECO "D32"]
[WhiteElo "1651"]
[BlackElo "1341"]
[PlyCount "39"]
[EventDate "2019.01.03"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. c4 e6 2. Nc3 d5 3. cxd5 exd5 4. d4 c5 5. Nf3 Nc6 6. e3 cxd4 7. Nxd4 Nxd4 8. Qxd4 Nf6 9. g3 b6 10. Bg2 Bb7 11. 0-0 Be7 12. Rd1 Qd7 13. Nxd5 Nxd5 14. Bxd5 Bf6 15. Qe4+ Kf8 16. Qb4+ Be7 17. Qb3 Rd8 18. e4 g6 19. Bh6+ Ke8 20. Bxf7# 1-0

[Event "Hannover Bezirk-ch U12"]
[Site "Hannover"]
[Date "2018.10.07"]
[Round "8.3"]
[White "Diederichs, Karl"]
[Black "Oetztuerk, Caner"]
[Result "1-0"]
[ECO "A40"]
[WhiteElo "1389"]
[PlyCount "93"]
[EventDate "2018.10.04"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. d4 e6 2. e3 Nc6 3. c3 d5 4. Bd3 Bd6 5. f4 Nf6 6. Nf3 b6 7. 0-0 Bb7 8. Ne5 0-0 9. Rf3 Nh5 10. Rh3 Nf6 11. Bxh7+ Nxh7 12. Qh5 Re8 13. Nxf7 Qf6 14. Ne5 Kf8 15. Qxh7 Ke7 16. Rg3 Rh8 17. Rxg7+ Kd8 18. Qxh8+ Bf8 19. Nf7+ Kd7 20. Ne5+ Ke8 21. Rg8 Qxh8 22. Rxh8 Nxe5 23. fxe5 Kd7 24. Na3 Bxa3 25. Rxa8 Bxa8 26. bxa3 c5 27. Bd2 cxd4 28. exd4 Kc6 29. Rf1 Bb7 30. Rf6 Kd7 31. Rf7+ Kc8 32. Re7 a5 33. Rxe6 Kc7 34. h4 Bc8 35. Rf6 Kb7 36. h5 b5 37. h6 b4 38. cxb4 axb4 39. Bxb4 Kc7 40. h7 Bd7 41. Bd6+ Kc6 42. h8Q Kb5 43. Qb8+ Kc4 44. Qb4+ Kd3 45. Rf3+ Ke4 46. Qd2 Bf5 47. Qe3# 1-0

[Event "Hannover Bezirk-ch U12"]
[Site "Hannover"]
[Date "2018.10.07"]
[Round "9.4"]
[White "Hohmann, Nick"]
[Black "Diederichs, Karl"]
[Result "0-1"]
[ECO "C41"]
[BlackElo "1389"]
[PlyCount "50"]
[EventDate "2018.10.04"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 d6 3. Nc3 Bg4 4. h3 Bxf3 5. Qxf3 Nf6 6. Bc4 Be7 7. Nd5 Nc6 8. Nxf6+ Bxf6 9. Qh5 0-0 10. d4 Nxd4 11. Bh6 Nxc2+ 12. Kd1 g6 13. Qg4 Nxa1 14. Bxf8 Qxf8 15. Qd7 Bg7 16. Rf1 b6 17. f4 exf4 18. Rxf4 Rd8 19. Bxf7+ Kh8 20. Qxc7 Rc8 21. Qxd6 Qxd6+ 22. Bd5 Qxf4 23. Be6 Rc1+ 24. Ke2 Rc2+ 25. Kd3 Qd2# 0-1

[Event "Hannover Bezirk-ch U12"]
[Site "Hannover"]
[Date "2018.10.06"]
[Round "7.3"]
[White "Daoud, Tirosh"]
[Black "Diederichs, Karl"]
[Result "0-1"]
[ECO "A03"]
[WhiteElo "693"]
[BlackElo "1389"]
[PlyCount "46"]
[EventDate "2018.10.04"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. f4 Nc6 2. Nf3 Nf6 3. e3 d5 4. d4 Bf5 5. Bb5 e6 6. 0-0 Bd6 7. Bxc6+ bxc6 8. Nbd2 Ne4 9. Nxe4 Bxe4 10. Nd2 f5 11. Nxe4 fxe4 12. c3 0-0 13. b3 Rf6 14. c4 Rh6 15. g3 Rg6 16. c5 Be7 17. h4 Bxh4 18. g4 Bg3 19. f5 Qh4 20. Qd2 Rxg4 21. Qg2 Bh2+ 22. Kh1 Bd6+ 23. Qh2 Qxh2# 0-1

[Event "Hannover Bezirk-ch U12"]
[Site "Hannover"]
[Date "2018.10.06"]
[Round "6.4"]
[White "Diederichs, Karl"]
[Black "Martin, Dominik"]
[Result "1-0"]
[ECO "D00"]
[WhiteElo "1389"]
[BlackElo "884"]
[PlyCount "57"]
[EventDate "2018.10.04"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. d4 d5 2. e3 Nf6 3. Bd3 Nc6 4. c3 e6 5. Nd2 Bd6 6. f4 Qd7 7. Ngf3 a6 8. 0-0 h6 9. Ne5 Bxe5 10. fxe5 Ne4 11. Nxe4 dxe4 12. Bxe4 Ne7 13. Qf3 f5 14. Bxb7 Bxb7 15. Qxb7 0-0 16. Qf3 g6 17. Qe2 Qc6 18. e4 fxe4 19. Bxh6 Rxf1+ 20. Rxf1 Nf5 21. Qg4 Kh7 22. Bg5 Kg7 23. Bf6+ Kf7 24. Qh3 Kg8 25. Qh8+ Kf7 26. Qh7+ Kf8 27. Rxf5 exf5 28. Qg7+ Ke8 29. Qe7# 1-0

[Event "Hannover Bezirk-ch U12"]
[Site "Hannover"]
[Date "2018.10.05"]
[Round "4.5"]
[White "Diederichs, Karl"]
[Black "Rehbein, Vitus"]
[Result "0-1"]
[ECO "D00"]
[WhiteElo "1389"]
[BlackElo "1123"]
[PlyCount "56"]
[EventDate "2018.10.04"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. d4 d5 2. e3 Nf6 3. Bd3 Nc6 4. c3 Bd7 5. Nd2 e5 6. f4 exd4 7. exd4 Bd6 8. Ndf3 Qe7+ 9. Ne5 Ng8 10. Ngf3 f6 11. 0-0 0-0-0 12. Nxd7 Qxd7 13. Qc2 g6 14. f5 Nce7 15. fxg6 hxg6 16. Bxg6 f5 17. Bf7 Nf6 18. Re1 Ne4 19. Bg5 Rdf8 20. Bxe7 Bxe7 21. Ne5 Qd6 22. Bxd5 Qxd5 23. Ng6 Qd6 24. Nxf8 Qxh2+ 25. Kf1 Qh1+ 26. Ke2 Qxg2+ 27. Kd3 Rh3+ 28. Kc4 Qxc2 0-1

[Event "Hannover Bezirk-ch U12"]
[Site "Hannover"]
[Date "2018.10.05"]
[Round "5.2"]
[White "Rasuli, Omed"]
[Black "Diederichs, Karl"]
[Result "0-1"]
[ECO "C46"]
[WhiteElo "920"]
[BlackElo "1389"]
[PlyCount "126"]
[EventDate "2018.10.04"]
[EventType "tourn"]
[EventRounds "9"]
[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 Bb4 4. Bb5 Nge7 5. 0-0 Bxc3 6. bxc3 d6 7. Bxc6+ Nxc6 8. d3 Bg4 9. h3 Bxf3 10. Qxf3 Ne7 11. Bg5 0-0 12. Bxe7 Qxe7 13. d4 Qg5 14. Qg4 Qd2 15. dxe5 dxe5 16. Qf3 Qxc2 17. Rfc1 Qa4 18. c4 Qd7 19. Qf5 Qc6 20. Qxe5 Rfe8 21. Qd5 Qxd5 22. exd5 Re5 23. Re1 Rae8 24. Rxe5 Rxe5 25. Rd1 f6 26. d6 cxd6 27. Rxd6 Kf7 28. Rd7+ Re7 29. Rxe7+ Kxe7 30. Kf1 Kd6 31. Ke2 Kc5 32. Kd3 Kb4 33. g4 Ka3 34. f4 Kxa2 35. g5 Kb3 36. gxf6 gxf6 37. Ke4 a5 38. Kf5 a4 39. Kxf6 a3 40. Ke7 a2 41. f5 a1Q 42. f6 Qa3+ 43. Kf7 Kxc4 44. Kg7 Qg3+ 45. Kxh7 Qxh3+ 46. Kg7 Qg4+ 47. Kf7 b5 48. Ke7 Qe4+ 49. Kf8 Qe6 50. f7 Qxf7+ 51. Kxf7 b4 52. Ke6 b3 53. Ke5 b2 54. Ke4 b1Q+ 55. Ke5 Qd3 56. Ke6 Qd5+ 57. Ke7 Qc6 58. Kf7 Kd5 59. Kg7 Qe6 60. Kh7 Qg4 61. Kh6 Ke6 62. Kh7 Kf7 63. Kh6 Qh4# 0-1

[Event "Hannover Bezirk-ch U12"]
[Site "Hannover"]
[Date "2018.10.04"]
[Round "2.5"]
[White "Amrhein, Dennis"]
[Black "Diederichs, Karl"]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "1514"]
[BlackElo "1389"]
[PlyCount "79"]
[EventDate "2018.10.04"]
[EventType "tourn"]
[EventRounds "9"]
[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 Nc6 5. c4 e6 6. Bd3 Ne4 7. 0-0 f6 8. Nfd2 Bd6 9. Nxe4 Bxe4 10. cxd5 exd5 11. Bxe4 dxe4 12. Qh5+ g6 13. Qh6 Bf8 14. Qh3 Bg7 15. Qe6+ Qe7 16. Qxe7+ Kxe7 17. Bxc7 Nb4 18. Nc3 f5 19. h3 Nd3 20. Rab1 Kd7 21. Bh2 Bh6 22. a3 Rac8 23. Nb5 a6 24. Nd6 Rc2 25. Nf7 Rxf2 26. Rxf2 Bxe3 27. Nxh8 Nxf2 28. Kf1 Bxd4 29. Nf7 Ke7 30. Ne5 e3 31. Nf3 Ba7 32. Ne5 Ne4 33. Ke2 Nd6 34. Rd1 g5 35. Nc6+ bxc6 36. Rxd6 Bb8 37. Rd7+ Kxd7 38. Bxb8 f4 39. g3 Ke6 40. gxf4 1-0

[Event "Hannover Bezirk-ch U12"]
[Site "Hannover"]
[Date "2018.10.04"]
[Round "3.1"]
[White "Diederichs, Karl"]
[Black "Oetztuerk, Rela"]
[Result "1-0"]
[ECO "A40"]
[WhiteElo "1389"]
[PlyCount "55"]
[EventDate "2018.10.04"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. d4 Nc6 2. e3 Nf6 3. Bd3 g6 4. c3 b6 5. f4 Bh6 6. Nf3 Ba6 7. Bxa6 Rb8 8. Bd3 Rg8 9. Qb3 e6 10. Ne5 Na5 11. Qc2 d6 12. Qa4+ Ke7 13. Nc6+ Kd7 14. Nxd8+ Kxd8 15. 0-0 Bf8 16. e4 d5 17. e5 Nd7 18. Bb5 c6 19. Bxc6 Kc7 20. Bxd7 Rd8 21. Bb5 Nb7 22. Be8 Rd7 23. Qxd7+ Kb8 24. Bxf7 Rg7 25. Na3 a5 26. Nb5 h6 27. Qc7+ Ka8 28. Qc8# 1-0

[Event "Hannover Bezirk-ch U12"]
[Site "Hannover"]
[Date "2018.10.04"]
[Round "1.2"]
[White "Diederichs, Karl"]
[Black "Stelter, Finja"]
[Result "1-0"]
[ECO "A45"]
[WhiteElo "1389"]
[PlyCount "49"]
[EventDate "2018.10.04"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. d4 d6 2. e3 Nd7 3. Bd3 Ngf6 4. Nd2 g6 5. c3 Bg7 6. f4 0-0 7. Ngf3 e5 8. fxe5 dxe5 9. 0-0 Ng4 10. Qe2 Re8 11. Bc4 Nb6 12. Bxf7+ Kxf7 13. Nxe5+ Kg8 14. Nxg4 Bxg4 15. Qxg4 Rxe3 16. Ne4 Nc4 17. Bxe3 Nxe3 18. Qe6+ Kh8 19. Rf3 Nc2 20. Raf1 Bxd4+ 21. cxd4 Nxd4 22. Qe5+ Kg8 23. Nf6+ Kg7 24. Ne8+ Kg8 25. Qg7# 1-0

[Event "Niedersachsen-ch op C"]
[Site "Verden"]
[Date "2018.01.07"]
[Round "7"]
[White "Ter Stal, Danja Yvonne"]
[Black "Diederichs, Karl"]
[Result "0-1"]
[ECO "A07"]
[WhiteElo "1093"]
[BlackElo "1010"]
[PlyCount "70"]
[EventDate "2018.01.04"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. Nf3 g6 2. g3 Bg7 3. Bg2 d5 4. 0-0 e5 5. d3 Nc6 6. e4 dxe4 7. dxe4 Bg4 8. h3 Qxd1 9. Rxd1 Bxf3 10. Bxf3 Nd4 11. Nd2 Nxc2 12. Rb1 Nd4 13. Bg2 c5 14. Kf1 b6 15. Nf3 Rd8 16. Nxd4 exd4 17. Bf4 Ne7 18. g4 0-0 19. b4 h6 20. bxc5 bxc5 21. Rb7 Rfe8 22. Rxa7 Ra8 23. Rxa8 Rxa8 24. Bd6 Nc6 25. Bxc5 Ra5 26. Bb6 Rxa2 27. Ke1 Rb2 28. Bc5 Rb5 29. Rc1 d3 30. Kd2 Ne5 31. f4 Nd7 32. Be3 Bb2 33. Re1 Rb3 34. Kd1 Bc3 35. Kc1 Bxe1 0-1

[Event "Niedersachsen-ch op C"]
[Site "Verden"]
[Date "2018.01.06"]
[Round "6"]
[White "Diederichs, Karl"]
[Black "Fink, Moritz"]
[Result "0-1"]
[ECO "D00"]
[WhiteElo "1010"]
[BlackElo "1369"]
[PlyCount "62"]
[EventDate "2018.01.04"]
[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. e3 Nf6 3. Bd3 Nc6 4. f4 e6 5. Nd2 Bd6 6. c3 0-0 7. Ngf3 Bd7 8. 0-0 Re8 9. Ne5 Qe7 10. Rf3 h6 11. Qe1 Nh7 12. Rh3 f6 13. Ng4 e5 14. fxe5 fxe5 15. Qg3 Ng5 16. Rh4 e4 17. Qe1 exd3 18. Qf1 Bxg4 19. Rxg4 Qxe3+ 20. Kh1 Qe2 21. Qg1 Qxg4 22. h3 Qe2 23. Nf1 Rf8 24. Bxg5 hxg5 25. Ne3 Rf7 26. Nxd5 Raf8 27. Ne3 Bf4 28. Nc4 b5 29. Re1 Qc2 30. Na3 Qxb2 31. Nxb5 Qxb5 0-1

[Event "Niedersachsen-ch op C"]
[Site "Verden"]
[Date "2018.01.06"]
[Round "5"]
[White "Eisenmenger, Till"]
[Black "Diederichs, Karl"]
[Result "1-0"]
[ECO "B06"]
[WhiteElo "1315"]
[BlackElo "1010"]
[PlyCount "109"]
[EventDate "2018.01.04"]
[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 g6 2. Nf3 d6 3. Nc3 Bg7 4. d4 a6 5. Be2 b5 6. a3 Nd7 7. 0-0 e6 8. d5 e5 9. b4 Bb7 10. a4 bxa4 11. Nxa4 Ne7 12. c4 Nb8 13. Be3 c6 14. Nb6 Ra7 15. c5 dxc5 16. Bxc5 cxd5 17. Nxd5 Nxd5 18. Bxa7 0-0 19. exd5 e4 20. Nd4 Qxd5 21. Ra5 Qd6 22. Bc5 Qf6 23. Bxf8 Bxf8 24. Nc2 Qc6 25. f3 Bd6 26. fxe4 Qxe4 27. Rf3 Bxh2+ 28. Kh1 Bc7 29. Qd3 Qh4+ 30. Rh3 Qf2 31. Rg5 f6 32. Rgg3 Bb6 33. Qd1 Bc7 34. Rf3 Bxf3 35. Bxf3 Bb6 36. Be2 Qf5 37. Nd4 Qf2 38. Bc4+ Kh8 39. Ne2 h5 40. Qg1 Qf5 41. Qxb6 Qb1+ 42. Qg1 Qxb4 43. Rb3 Qxc4 44. Rxb8+ Kh7 45. Qa7+ Kh6 46. Rh8+ Kg5 47. Qe3+ Kf5 48. Ng3+ Kg4 49. Qe4+ Qxe4 50. Nxe4 Kf5 51. Nf2 Kf4 52. Kh2 g5 53. Rxh5 g4 54. Nxg4 Kxg4 55. Ra5 1-0

[Event "Niedersachsen-ch op C"]
[Site "Verden"]
[Date "2018.01.05"]
[Round "4"]
[White "Diederichs, Karl"]
[Black "Lau, Ferdinand"]
[Result "1-0"]
[ECO "A40"]
[WhiteElo "1010"]
[BlackElo "1080"]
[PlyCount "64"]
[EventDate "2018.01.04"]
[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 b6 2. e3 e6 3. f4 Bb7 4. Nf3 Bb4+ 5. Bd2 Bxd2+ 6. Nbxd2 d5 7. Bd3 Nf6 8. 0-0 0-0 9. Ne5 Nbd7 10. Rf3 Ne4 11. Rh3 Nef6 12. Bxh7+ Nxh7 13. Qh5 Ndf6 14. Qh4 g6 15. Ng4 Nh5 16. Qf2 Rc8 17. Nf1 f5 18. Ne5 Kg7 19. Ng3 Nxg3 20. Qxg3 Rf6 21. Qh4 Qh8 22. Qh6+ Kg8 23. Nxg6 Rxg6 24. Qxg6+ Qg7 25. Qxe6+ Kh8 26. Qxf5 c5 27. Rd1 cxd4 28. Rxd4 Rc4 29. Rxc4 dxc4 30. Rg3 Qxb2 31. h3 b5 32. Qf7 Nf6 1-0

[Event "Niedersachsen-ch op C"]
[Site "Verden"]
[Date "2018.01.05"]
[Round "3"]
[White "Kirch, Christopher"]
[Black "Diederichs, Karl"]
[Result "1/2-1/2"]
[ECO "B07"]
[WhiteElo "1288"]
[BlackElo "1010"]
[PlyCount "20"]
[EventDate "2018.01.04"]
[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 g6 2. Nf3 d6 3. h3 Bg7 4. Bc4 e6 5. Bb3 a6 6. d3 b5 7. c3 Nd7 8. Be3 Bb7 9. a3 Ne7 10. Nbd2 d5 1/2-1/2

[Event "Niedersachsen-ch op C"]
[Site "Verden"]
[Date "2018.01.04"]
[Round "1"]
[White "Bruehl, Katharina"]
[Black "Diederichs, Karl"]
[Result "1-0"]
[ECO "B12"]
[WhiteElo "1334"]
[BlackElo "1010"]
[PlyCount "51"]
[EventDate "2018.01.04"]
[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. d4 d5 3. e5 Bf5 4. Bd3 Bxd3 5. Qxd3 e6 6. Ne2 f6 7. f4 Be7 8. a3 Nd7 9. 0-0 c5 10. c3 Qb6 11. b4 fxe5 12. fxe5 Nxe5 13. dxe5 c4+ 14. Qd4 Qc7 15. Kh1 Nh6 16. Bxh6 gxh6 17. Nd2 Kd7 18. Ne4 Rhg8 19. Nf6+ Bxf6 20. Rxf6 Rg7 21. Raf1 Ke8 22. Rf8+ Kd7 23. R8f7+ Kd8 24. Rxc7 Kxc7 25. Qc5+ Kd7 26. Qd6+ 1-0

[Event "Niedersachsen-ch op C"]
[Site "Verden"]
[Date "2018.01.04"]
[Round "2"]
[White "Diederichs, Karl"]
[Black "Shodja, Massod"]
[Result "1-0"]
[ECO "D00"]
[WhiteElo "1010"]
[PlyCount "169"]
[EventDate "2018.01.04"]
[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. e3 Bf5 3. f4 Nc6 4. c4 Nb4 5. Qa4+ Nc6 6. cxd5 Qxd5 7. Nc3 Qa5 8. Qxa5 Nxa5 9. Nf3 f6 10. Bd2 c6 11. Nd5 cxd5 12. Bxa5 Be4 13. h3 e6 14. Rc1 b6 15. Bb5+ Kf7 16. Rc7+ Ne7 17. Bb4 a6 18. Bc6 Rb8 19. Bxe7 Bxe7 20. 0-0 Rhc8 21. Rxc8 Rxc8 22. Bb7 Rc2 23. Rf2 Rxf2 24. Kxf2 a5 25. Nd2 f5 26. g4 Bb4 27. Nxe4 dxe4 28. a3 Bd2 29. b3 Bc1 30. a4 h6 31. Bc8 Kf6 32. g5+ hxg5 33. fxg5+ Kxg5 34. Bxe6 g6 35. d5 Kf6 36. Bg8 Ke5 37. Bf7 g5 38. Be6 f4 39. exf4+ gxf4 40. h4 e3+ 41. Ke2 Ke4 42. d6 f3+ 43. Ke1 Bd2+ 44. Kd1 f2 45. Ke2 Bb4 46. d7 Be7 47. h5 Ke5 48. Bh3 Kd6 49. h6 Kc7 50. h7 Bf6 51. Kxe3 f1Q 52. Bxf1 Kxd7 53. Kd3 Ke7 54. Kc4 Kf8 55. Kb5 Kg7 56. Kxb6 Bd8+ 57. Kb5 Kxh7 58. Kc4 Kg7 59. b4 Kf7 60. b5 Ke7 61. Kc5 Kd7 62. b6 Kc8 63. Bg2 Kb8 64. Kb5 Kc8 65. Kxa5 Kb8 66. Kb5 Bg5 67. a5 Be3 68. a6 Bxb6 69. Kxb6 Kc8 70. Bb7+ Kd7 71. a7 Kd6 72. a8Q Ke5 73. Qb8+ Ke6 74. Bc8+ Kd5 75. Qb7+ Ke5 76. Qc6 Kd4 77. Qc5+ Ke4 78. Bf5+ Kf4 79. Qd5 Kg5 80. Qf3 Kf6 81. Kc6 Ke5 82. Qe4+ Kf6 83. Kd6 Kg5 84. Qg4+ Kf6 85. Qg6# 1-0

