[Event "Rheinland Pfalz Seniors op"]
[Site "Altenkirchen"]
[Date "2023.09.13"]
[Round "9"]
[White "Duijker, Bert"]
[Black "Janssens, Manu"]
[Result "1/2-1/2"]
[ECO "A88"]
[WhiteElo "1851"]
[BlackElo "1772"]
[PlyCount "38"]
[EventDate "2023.09.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. Nf3 f5 2. d4 Nf6 3. c4 g6 4. g3 Bg7 5. Bg2 0-0 6. Nc3 d6 7. 0-0 c6 8. Rb1 Qe8 9. d5 e5 10. dxe6 Bxe6 11. b3 Qd7 12. Qc2 a5 13. Rd1 Na6 14. a3 Nc5 15. Be3 Nce4 16. Na4 Rad8 17. Bb6 Ra8 18. Nc5 Qe7 19. Nxe6 Qxe6 1/2-1/2

[Event "Rheinland Pfalz Seniors op"]
[Site "Altenkirchen"]
[Date "2023.09.12"]
[Round "8"]
[White "Platten, Herbert"]
[Black "Duijker, Bert"]
[Result "1-0"]
[ECO "A43"]
[WhiteElo "1691"]
[BlackElo "1851"]
[PlyCount "83"]
[EventDate "2023.09.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 g6 2. c4 Bg7 3. Nc3 c5 4. d5 d6 5. e4 e6 6. Nge2 exd5 7. Nxd5 Nc6 8. Nec3 Be6 9. Be3 Nge7 10. Qd2 Bxd5 11. cxd5 Ne5 12. Bb5+ Nd7 13. Bh6 0-0 14. Bxg7 Kxg7 15. f4 f5 16. 0-0 Nf6 17. e5 dxe5 18. d6 Nc6 19. Bxc6 bxc6 20. fxe5 Ne8 21. Na4 Nc7 22. Nxc5 Kg8 23. e6 Nd5 24. Nd7 Re8 25. Rfe1 a5 26. Rac1 Rxe6 27. Rxe6 Qxd7 28. Rce1 a4 29. Qh6 Qg7 30. Qxg7+ Kxg7 31. d7 Rd8 32. Rd6 Kf7 33. a3 Nf6 34. Red1 c5 35. Ra6 Nxd7 36. Rxa4 Ke7 37. Ra7 h5 38. a4 h4 39. a5 g5 40. Rb7 c4 41. a6 Ke6 42. a7 1-0

[Event "Rheinland Pfalz Seniors op"]
[Site "Altenkirchen"]
[Date "2023.09.11"]
[Round "7"]
[White "Duijker, Bert"]
[Black "Schulze Forsthoevel, Manfred"]
[Result "1/2-1/2"]
[ECO "A87"]
[WhiteElo "1851"]
[BlackElo "1578"]
[PlyCount "100"]
[EventDate "2023.09.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. Nf3 f5 2. d4 Nf6 3. c4 d6 4. g3 g6 5. Bg2 Bg7 6. 0-0 0-0 7. Nc3 Qe8 8. Nd5 Nxd5 9. cxd5 e6 10. Ng5 c6 11. Nxe6 Bxe6 12. dxe6 d5 13. Qb3 Qxe6 14. Be3 Nd7 15. Rac1 Nb6 16. Rfd1 Qd7 17. h4 h6 18. Bf4 Kh7 19. Qb4 Rfe8 20. Bf3 Bf8 21. Qc3 Bd6 22. Bxd6 Qxd6 23. b3 Nd7 24. a4 Nf6 25. Kg2 Re7 26. a5 a6 27. e3 h5 28. b4 Ne8 29. Qd2 Nc7 30. Be2 Rae8 31. Rb1 Re4 32. Bf3 R4e7 33. Qd3 Rf8 34. Re1 Kg7 35. Qc3 Rfe8 36. Qd2 Ne6 37. Qc3 Nc7 38. Be2 Rf8 39. Bd3 Ref7 40. Rbc1 Rf6 41. Rc2 Kh6 42. Rce2 Ne6 43. f3 g5 44. Rh1 Rg8 45. Qe1 g4 46. f4 Rgf8 47. Qb1 Nc7 48. Rc1 Kg6 49. Kf2 Qe7 50. Qb3 Qd6 1/2-1/2

[Event "Rheinland Pfalz Seniors op"]
[Site "Altenkirchen"]
[Date "2023.09.10"]
[Round "6"]
[White "Goris, Ton"]
[Black "Duijker, Bert"]
[Result "1-0"]
[ECO "B06"]
[WhiteElo "1898"]
[BlackElo "1851"]
[PlyCount "79"]
[EventDate "2023.09.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nc3 d6 4. f4 a6 5. Nf3 b5 6. Bd3 Bb7 7. 0-0 Nd7 8. e5 e6 9. a4 b4 10. Ne4 Bxe4 11. Bxe4 d5 12. Bd3 Ne7 13. Be3 0-0 14. a5 Qb8 15. Qe2 Qb7 16. c3 bxc3 17. bxc3 Rfb8 18. Rfb1 Qc8 19. Rxb8 Nxb8 20. Nd2 Nd7 21. Nb3 Nf5 22. Bf2 Bf8 23. g4 Ng7 24. Nc5 Nxc5 25. dxc5 Ne8 26. Rb1 c6 27. Rb6 Nc7 28. Rxc6 Qd7 29. Rb6 Qa4 30. Bd4 Qxa5 31. Rc6 Ra7 32. Qb2 Nb5 33. Bxb5 axb5 34. Rb6 Rc7 35. Rxb5 Qa4 36. Qb1 Qa3 37. Rb8 Qa5 38. f5 Ra7 39. c6 Ra8 40. c7 1-0

[Event "Rheinland Pfalz Seniors op"]
[Site "Altenkirchen"]
[Date "2023.09.09"]
[Round "5"]
[White "Duijker, Bert"]
[Black "Siebenhaar, Erich"]
[Result "0-1"]
[ECO "E63"]
[WhiteElo "1851"]
[BlackElo "2056"]
[PlyCount "98"]
[EventDate "2023.09.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. Nf3 g6 2. c4 Bg7 3. d4 d6 4. Nc3 Nf6 5. g3 0-0 6. Bg2 Nc6 7. 0-0 a6 8. e4 Bg4 9. h3 Bxf3 10. Bxf3 e5 11. d5 Nd4 12. Bg2 c5 13. dxc6 bxc6 14. Be3 Nd7 15. f4 Rb8 16. b3 f5 17. Rc1 Nf6 18. Kh2 Nxe4 19. Nxe4 fxe4 20. Bxe4 c5 21. Bd5+ Kh8 22. Bxd4 cxd4 23. fxe5 Bxe5 24. Rxf8+ Qxf8 25. Qf1 Qh6 26. Rc2 Qg5 27. Qg2 h5 28. Kh1 Qxg3 29. Qxg3 Bxg3 30. Kg2 Bf4 31. Be4 Kg7 32. c5 dxc5 33. Rxc5 Rb6 34. Rc4 Be3 35. Rc6 Rxc6 36. Bxc6 d3 37. Kf3 d2 38. Ke2 a5 39. a3 Kf6 40. b4 axb4 41. axb4 Kf5 42. Ba4 Bf4 43. Kf3 g5 44. Bd7+ Ke5 45. Ba4 Kd4 46. Ke2 h4 47. Bd7 Kc3 48. b5 Kc2 49. Bf5+ Kc1 0-1

[Event "Rheinland Pfalz Seniors op"]
[Site "Altenkirchen"]
[Date "2023.09.08"]
[Round "4"]
[White "Vautrin, Stefan"]
[Black "Duijker, Bert"]
[Result "1-0"]
[ECO "D30"]
[WhiteElo "2113"]
[BlackElo "1851"]
[PlyCount "87"]
[EventDate "2023.09.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. b3 d5 2. Nf3 c5 3. Bb2 e6 4. g3 Nf6 5. Bg2 Be7 6. 0-0 0-0 7. c4 Nc6 8. cxd5 exd5 9. d4 cxd4 10. Nxd4 Nxd4 11. Qxd4 Be6 12. Ba3 Bxa3 13. Nxa3 Qa5 14. Qb2 Rac8 15. Rac1 h6 16. e3 a6 17. Nc2 Qd8 18. Nd4 Qd7 19. Rfd1 Rxc1 20. Rxc1 Rc8 21. f3 Bh3 22. Bh1 Be6 23. Kf2 Qd6 24. Rxc8+ Bxc8 25. Qc3 Bd7 26. b4 Kf8 27. Bg2 Ne8 28. Nb3 Bc6 29. Ke2 Qf6 30. Qxf6 Nxf6 31. Kd3 Ke7 32. Kd4 Kd6 33. Nc5 Nd7 34. Bh3 Nb6 35. Bf1 f6 36. Bd3 Nd7 37. f4 Nb6 38. Be2 Na4 39. Bd1 Nxc5 40. bxc5+ Ke6 41. g4 g6 42. Bc2 Kf7 43. Bb3 Ke6 44. e4 1-0

[Event "Rheinland Pfalz Seniors op"]
[Site "Altenkirchen"]
[Date "2023.09.07"]
[Round "3"]
[White "Duijker, Bert"]
[Black "Riesenbeck, Juergen"]
[Result "1/2-1/2"]
[ECO "D74"]
[WhiteElo "1851"]
[BlackElo "2097"]
[PlyCount "53"]
[EventDate "2023.09.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 g6 3. d4 Bg7 4. g3 0-0 5. Bg2 d5 6. cxd5 Nxd5 7. 0-0 Nc6 8. h3 Nb6 9. e3 e5 10. dxe5 Nxe5 11. Nxe5 Bxe5 12. Nd2 c6 13. Rb1 Be6 14. b3 Qd7 15. Nf3 Bg7 16. Qxd7 Bxd7 17. Bb2 Bf5 18. Bxg7 Kxg7 19. Rbc1 Rad8 20. Nd4 Bd3 21. Rfd1 Ba6 22. Bf1 Bxf1 23. Kxf1 Rd7 24. Ke2 Rfd8 25. a4 Nd5 26. a5 a6 27. Rc4 1/2-1/2

[Event "Rheinland Pfalz Seniors op"]
[Site "Altenkirchen"]
[Date "2023.09.05"]
[Round "1"]
[White "Geyer, Bernhard"]
[Black "Duijker, Bert"]
[Result "0-1"]
[ECO "E91"]
[WhiteElo "2164"]
[BlackElo "1851"]
[PlyCount "92"]
[EventDate "2023.09.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. c4 c5 4. d5 d6 5. Nc3 e6 6. Be2 exd5 7. exd5 Nf6 8. Nf3 0-0 9. 0-0 Re8 10. Re1 Bg4 11. h3 Bxf3 12. Bxf3 a6 13. Bf4 Qc7 14. Rxe8+ Nxe8 15. Qa4 Nd7 16. Re1 Ne5 17. Be2 Rd8 18. Bg5 f6 19. Bh4 Qd7 20. Qc2 Rb8 21. f4 Nf7 22. Qd3 f5 23. g4 Nh6 24. g5 Nf7 25. Bf2 Nc7 26. h4 h5 27. a3 b5 28. Qc2 b4 29. axb4 Rxb4 30. b3 Nd8 31. Rb1 Qe7 32. Na2 Rb8 33. b4 Qe4 34. Qxe4 fxe4 35. Kf1 a5 36. b5 Na6 37. Be1 Nb4 38. Nc3 e3 39. Na4 Nb7 40. Kg2 Re8 41. Bc3 Nc2 42. Bd3 Bxc3 43. Nxc3 e2 44. Nxe2 Re3 45. Rd1 Rxd3 46. Rxd3 Ne1+ 0-1

[Event "Berlin-ch Seniors op 39th"]
[Site "Berlin"]
[Date "2023.01.31"]
[Round "8"]
[White "Hildebrand, Gerald"]
[Black "Duijker, Bert"]
[Result "1-0"]
[ECO "A41"]
[WhiteElo "2053"]
[BlackElo "1860"]
[PlyCount "81"]
[EventDate "2023.01.24"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. d4 g6 2. c4 Bg7 3. e4 d6 4. f4 c5 5. d5 e6 6. Nc3 exd5 7. Nxd5 Nc6 8. Nf3 Bg4 9. Bd3 Nf6 10. 0-0 0-0 11. Rb1 Re8 12. Ne3 Bxf3 13. gxf3 Nh5 14. Nd5 Bd4+ 15. Kh1 Rc8 16. a3 Qh4 17. Qe1 Qxe1 18. Rxe1 Kg7 19. Bf1 f5 20. Be3 Bxe3 21. Rxe3 fxe4 22. Bh3 Rcd8 23. Nc7 Nxf4 24. Nxe8+ Rxe8 25. Bd7 Re7 26. Bxc6 bxc6 27. Rxe4 Rxe4 28. fxe4 Kf6 29. b4 cxb4 30. Rxb4 Ke5 31. Rb7 a5 32. Ra7 Kxe4 33. Rxa5 Kd4 34. Ra6 Kc5 35. a4 Nd3 36. a5 Nb4 37. Rb6 Nd3 38. Rb8 Kxc4 39. a6 Nc5 40. a7 Na6 41. Rb7 1-0

[Event "Berlin-ch Seniors op 39th"]
[Site "Berlin"]
[Date "2023.01.25"]
[Round "2"]
[White "Raitza, Olaf"]
[Black "Duijker, Bert"]
[Result "1-0"]
[ECO "B06"]
[WhiteElo "2150"]
[BlackElo "1860"]
[PlyCount "67"]
[EventDate "2023.01.24"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nc3 d6 4. Be3 a6 5. a4 b6 6. Nf3 Bb7 7. Bd3 Nd7 8. Qd2 c5 9. d5 Rc8 10. Qe2 Ra8 11. 0-0 Ngf6 12. h3 0-0 13. Nd2 Ne5 14. f4 Nxd3 15. Qxd3 e6 16. Rad1 exd5 17. exd5 Re8 18. Bf2 Nh5 19. Qf3 f5 20. g4 fxg4 21. hxg4 Nf6 22. Bh4 Qd7 23. Bxf6 Bxf6 24. Nde4 Bg7 25. Ng5 b5 26. Nce4 Bxb2 27. c3 Rxe4 28. Nxe4 Rf8 29. Rf2 Ba3 30. axb5 axb5 31. g5 Kh8 32. Nf6 Qf7 33. Re2 c4 34. Rde1 1-0

[Event "Altenkirchen Seniors op 19th"]
[Site "Altenkirchen"]
[Date "2022.07.27"]
[Round "9"]
[White "Duijker, Bert"]
[Black "Platten, Herbert"]
[Result "0-1"]
[ECO "B41"]
[WhiteElo "1873"]
[BlackElo "1735"]
[PlyCount "106"]
[EventDate "2022.07.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 c5 3. d4 e6 4. Nc3 a6 5. e4 cxd4 6. Nxd4 d6 7. Be2 e5 8. Nc2 Nc6 9. 0-0 Be7 10. Be3 b6 11. Qd2 0-0 12. Rfd1 Rb8 13. f3 Kh8 14. b4 Na7 15. a4 Rb7 16. Rac1 Rd7 17. Qe1 Nc6 18. Qf2 Rb7 19. c5 bxc5 20. Bxa6 Rxb4 21. Nxb4 Nxb4 22. Bxc8 Qxc8 23. Nb5 Ne8 24. g4 h6 25. h4 Rg8 26. Nc3 Kh7 27. Nd5 Nxd5 28. exd5 f5 29. gxf5 Qxf5 30. Qc2 Qxc2 31. Rxc2 Bxh4 32. a5 Nc7 33. Ra2 Na6 34. Ra4 Bd8 35. f4 Bf6 36. fxe5 Bxe5 37. Bf4 Bxf4 38. Rxf4 Rc8 39. Rf7 Rd8 40. Ra7 Nb4 41. a6 Rb8 42. Rb7 Nxa6 43. Rxb8 Nxb8 44. Rb1 Nd7 45. Rb7 Nf6 46. Rb6 Ne4 47. Kg2 Kg6 48. Kf3 Kf5 49. Rb7 Ng5+ 50. Ke3 Kf6 51. Rd7 Nf7 52. Kf4 g5+ 53. Kg4 Ne5+ 0-1

[Event "Altenkirchen Seniors op 19th"]
[Site "Altenkirchen"]
[Date "2022.07.26"]
[Round "8"]
[White "Kalkmann, Hans"]
[Black "Duijker, Bert"]
[Result "1-0"]
[ECO "B06"]
[WhiteElo "1809"]
[BlackElo "1873"]
[PlyCount "67"]
[EventDate "2022.07.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. f4 g6 2. e4 Bg7 3. Nf3 d5 4. exd5 Qxd5 5. d3 c5 6. Nc3 Bxc3+ 7. bxc3 Nf6 8. c4 Qd6 9. g3 Nc6 10. Bg2 Qe6+ 11. Qe2 Qxe2+ 12. Kxe2 0-0 13. Bb2 Bg4 14. Kd2 Bxf3 15. Bxf3 Rac8 16. Rhe1 Rfe8 17. Bxf6 exf6 18. Rxe8+ Rxe8 19. Bxc6 bxc6 20. Rb1 h5 21. Rb7 g5 22. Rxa7 gxf4 23. gxf4 Kg7 24. Ra5 Kg6 25. Rxc5 Ra8 26. Rxc6 Rxa2 27. Rc8 Kf5 28. Rh8 Kg4 29. c5 Ra5 30. d4 Kxf4 31. Rxh5 Kg4 32. Rh7 f5 33. Rxf7 f4 34. c6 1-0

[Event "Altenkirchen Seniors op 19th"]
[Site "Altenkirchen"]
[Date "2022.07.25"]
[Round "7"]
[White "Duijker, Bert"]
[Black "Lares, Harald"]
[Result "0-1"]
[ECO "B36"]
[WhiteElo "1873"]
[BlackElo "1993"]
[PlyCount "98"]
[EventDate "2022.07.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. Nf3 c5 2. c4 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. e4 Nxd4 7. Qxd4 d6 8. Be2 Bg7 9. Be3 0-0 10. Qd2 Bd7 11. 0-0 Bc6 12. f3 a6 13. Rfd1 Kh8 14. Rab1 Qd7 15. Bb6 Qe6 16. b3 Nd7 17. Bd4 f5 18. Bxg7+ Kxg7 19. exf5 Qxf5 20. Nd5 Bxd5 21. Qxd5 Qxd5 22. Rxd5 Rf6 23. Rb2 Raf8 24. Bd1 Rf5 25. Rxf5 Rxf5 26. Re2 Kf6 27. Bc2 Ra5 28. Bb1 Re5 29. Kf2 a5 30. a4 b6 31. Bc2 h6 32. g4 g5 33. Bf5 Nc5 34. Bc2 Rxe2+ 35. Kxe2 Ke5 36. Ke3 Ne6 37. Bd1 Nf4 38. Bc2 e6 39. Be4 d5 40. cxd5 exd5 41. Bc2 Ne6 42. Bd1 Nc5 43. Bc2 d4+ 44. Ke2 Kf4 45. h3 Kg3 46. Be4 Kxh3 47. Bd5 Kg3 48. Bf7 Kf4 49. Bc4 d3+ 0-1

[Event "Altenkirchen Seniors op 19th"]
[Site "Altenkirchen"]
[Date "2022.07.24"]
[Round "6"]
[White "Boscher, Hans"]
[Black "Duijker, Bert"]
[Result "0-1"]
[ECO "B23"]
[WhiteElo "1579"]
[BlackElo "1873"]
[PlyCount "62"]
[EventDate "2022.07.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. e4 g6 2. Nc3 Bg7 3. Bc4 d6 4. f4 c5 5. Nf3 Nc6 6. 0-0 e6 7. d3 Nge7 8. Bb3 0-0 9. Be3 Na5 10. d4 c4 11. Ba4 a6 12. b4 cxb3 13. Bxb3 b5 14. Rc1 Qc7 15. Qd3 Bb7 16. Ne2 Rac8 17. Ng3 Qc3 18. Qxc3 Rxc3 19. Bd2 Nxb3 20. cxb3 Rxc1 21. Rxc1 Rc8 22. Rxc8+ Nxc8 23. Bb4 f6 24. Kf2 Kf7 25. Ke2 Bf8 26. e5 dxe5 27. Bxf8 exf4 28. Bc5 fxg3 29. hxg3 Ne7 30. Kd3 h5 31. b4 Nf5 0-1

[Event "Altenkirchen Seniors op 19th"]
[Site "Altenkirchen"]
[Date "2022.07.23"]
[Round "5"]
[White "Siebenhaar, Erich"]
[Black "Duijker, Bert"]
[Result "1-0"]
[ECO "A01"]
[WhiteElo "2020"]
[BlackElo "1873"]
[PlyCount "97"]
[EventDate "2022.07.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. b3 d6 2. Bb2 c5 3. e3 Nd7 4. Nf3 Ngf6 5. d4 cxd4 6. exd4 g6 7. Nbd2 Bg7 8. Bd3 0-0 9. 0-0 b6 10. Re1 Bb7 11. c4 Rc8 12. Rc1 Re8 13. Ne4 Nxe4 14. Bxe4 Bxe4 15. Rxe4 e6 16. Qd2 d5 17. cxd5 exd5 18. Rxe8+ Qxe8 19. Re1 Qd8 20. Ne5 Nf6 21. f3 Rc7 22. Re2 Qd6 23. g4 Rc8 24. Kg2 h5 25. h3 hxg4 26. hxg4 Qc7 27. Qd3 Qd6 28. Qa6 Qc7 29. Ba3 Re8 30. Qb5 Re6 31. Bb4 a5 32. Be1 Qd8 33. Bf2 Qe8 34. Qxe8+ Nxe8 35. Rc2 Bxe5 36. dxe5 f5 37. gxf5 gxf5 38. f4 Kf7 39. Kf3 Ke7 40. Be3 Kd7 41. Rh2 Ng7 42. Rh7 Rg6 43. Bxb6 Rxb6 44. Rxg7+ Ke8 45. Ke3 a4 46. bxa4 Ra6 47. Rg5 Rxa4 48. Rxf5 Rxa2 49. Rf6 1-0

[Event "Altenkirchen Seniors op 19th"]
[Site "Altenkirchen"]
[Date "2022.07.22"]
[Round "4"]
[White "Duijker, Bert"]
[Black "Zunker, Reinhard"]
[Result "1/2-1/2"]
[ECO "D46"]
[WhiteElo "1873"]
[BlackElo "2022"]
[PlyCount "40"]
[EventDate "2022.07.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. Nf3 d5 2. d4 Nf6 3. c4 c6 4. Nc3 e6 5. e3 Bd6 6. Bd3 Nbd7 7. 0-0 0-0 8. b3 e5 9. cxd5 cxd5 10. dxe5 Nxe5 11. Nxe5 Bxe5 12. Bb2 Re8 13. Rc1 a6 14. h3 b5 15. Ba1 d4 16. exd4 Bxd4 17. Qf3 Be6 18. Rfd1 Qb6 19. Ne4 Bxa1 20. Rxa1 Nxe4 1/2-1/2

[Event "Altenkirchen Seniors op 19th"]
[Site "Altenkirchen"]
[Date "2022.07.21"]
[Round "3"]
[White "Duijker, Bert"]
[Black "Paus, Franz"]
[Result "1/2-1/2"]
[ECO "B38"]
[WhiteElo "1873"]
[BlackElo "2022"]
[PlyCount "42"]
[EventDate "2022.07.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. Nf3 g6 2. c4 c5 3. d4 cxd4 4. Nxd4 Bg7 5. e4 Nc6 6. Be3 Nf6 7. Nc3 d6 8. Be2 0-0 9. 0-0 Nxd4 10. Bxd4 Bd7 11. f3 Bc6 12. Qd2 Nh5 13. Rfd1 Bxd4+ 14. Qxd4 Nf4 15. Bf1 Ne6 16. Qe3 Qa5 17. Nd5 Bxd5 18. Rxd5 Qb6 19. Qxb6 axb6 20. Rb5 Ra6 21. Rd5 Ra5 1/2-1/2

[Event "Altenkirchen Seniors op 19th"]
[Site "Altenkirchen"]
[Date "2022.07.20"]
[Round "2"]
[White "Kripp, Wolfgang"]
[Black "Duijker, Bert"]
[Result "1/2-1/2"]
[ECO "B06"]
[WhiteElo "2005"]
[BlackElo "1873"]
[PlyCount "45"]
[EventDate "2022.07.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nc3 d6 4. Nf3 a6 5. a4 b6 6. Be3 Bb7 7. Qd2 Nd7 8. Bc4 e6 9. h4 c5 10. h5 cxd4 11. Bxd4 Ne5 12. Bxe5 dxe5 13. Qe2 Qc7 14. hxg6 hxg6 15. Rxh8 Bxh8 16. Rd1 Bf6 17. Kf1 Ne7 18. Bb3 Nc6 19. Qc4 Rc8 20. Nh2 Nd4 21. Qxc7 Rxc7 22. Ng4 Bg7 23. f3 1/2-1/2

[Event "Altenkirchen Seniors op 19th"]
[Site "Altenkirchen"]
[Date "2022.07.19"]
[Round "1"]
[White "Duijker, Bert"]
[Black "Pfaff, Helmut"]
[Result "1-0"]
[ECO "A53"]
[WhiteElo "1873"]
[BlackElo "1201"]
[PlyCount "99"]
[EventDate "2022.07.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. Nf3 d6 2. d4 Nf6 3. c4 c6 4. Nc3 d5 5. Bf4 e6 6. e3 Be7 7. Bd3 Ne4 8. Bxe4 dxe4 9. Nxe4 Bb4+ 10. Ned2 Bd6 11. Bxd6 Qxd6 12. 0-0 0-0 13. Qc2 f6 14. Rad1 Qe7 15. e4 e5 16. d5 cxd5 17. exd5 Rd8 18. Ne4 Bf5 19. Rfe1 Na6 20. Nfd2 Rac8 21. Qb3 Bg4 22. f3 Nc5 23. Nxc5 Qxc5+ 24. Qe3 Qxe3+ 25. Rxe3 Bf5 26. Rc1 b6 27. Rcc3 a5 28. Ne4 Bd7 29. g4 b5 30. c5 b4 31. Rc2 Bb5 32. Rd2 Bc4 33. d6 Be6 34. b3 Rc6 35. Kf2 Ra6 36. Kg3 Bd7 37. f4 f5 38. gxf5 Bxf5 39. fxe5 Bxe4 40. Rxe4 a4 41. e6 axb3 42. axb3 Ra7 43. e7 Re8 44. d7 Rxd7 45. Rxd7 Kf7 46. c6 Kf6 47. c7 Kf7 48. Rd8 Rxe7 49. Rxe7+ Kxe7 50. c8Q 1-0

[Event "Altenkirchen Seniors op 18th"]
[Site "Altenkirchen"]
[Date "2021.07.10"]
[Round "9"]
[White "Duijker, Bert"]
[Black "Supplieth, Peter"]
[Result "1/2-1/2"]
[ECO "D12"]
[WhiteElo "1853"]
[BlackElo "1865"]
[PlyCount "27"]
[EventDate "2021.07.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]

1. Nf3 d5 2. d4 Nf6 3. c4 c6 4. Nc3 Bf5 5. e3 e6 6. Bd3 Ne4 7. 0-0 Bb4 8. Qc2 Bxc3 9. bxc3 0-0 10. Nd2 Nxd2 11. Bxd2 Bxd3 12. Qxd3 Nd7 13. Rfb1 b6 14. a4 1/2-1/2

[Event "Altenkirchen Seniors op 18th"]
[Site "Altenkirchen"]
[Date "2021.07.09"]
[Round "8"]
[White "Kalepky, Helmut"]
[Black "Duijker, Bert"]
[Result "1/2-1/2"]
[ECO "A26"]
[WhiteElo "1962"]
[BlackElo "1853"]
[PlyCount "52"]
[EventDate "2021.07.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]

1. c4 g6 2. g3 Bg7 3. Bg2 e5 4. Nc3 Ne7 5. e4 Nbc6 6. Nge2 0-0 7. d3 d6 8. 0-0 Nd4 9. Be3 Nec6 10. Rb1 a5 11. b3 Bg4 12. f3 Be6 13. a3 Qd7 14. Qd2 Nxe2+ 15. Nxe2 Nd4 16. Rbc1 Nxe2+ 17. Qxe2 c5 18. b4 axb4 19. axb4 b6 20. Qb2 Qc7 21. Ra1 f5 22. b5 f4 23. Bd2 Qb7 24. Rxa8 Rxa8 25. Rc1 g5 26. Bc3 Ra7 1/2-1/2

[Event "Altenkirchen Seniors op 18th"]
[Site "Altenkirchen"]
[Date "2021.07.08"]
[Round "7"]
[White "Boeven, Manfred"]
[Black "Duijker, Bert"]
[Result "1/2-1/2"]
[ECO "B06"]
[WhiteElo "2037"]
[BlackElo "1853"]
[PlyCount "75"]
[EventDate "2021.07.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]

1. d4 g6 2. e4 Bg7 3. Nc3 d6 4. f4 a6 5. Nf3 Bg4 6. Be3 Nd7 7. h3 Bxf3 8. Qxf3 e6 9. g4 h5 10. 0-0-0 hxg4 11. hxg4 Rxh1 12. Qxh1 Qe7 13. Bc4 0-0-0 14. f5 Nb6 15. Bb3 d5 16. Qh7 Qf8 17. e5 Bh6 18. g5 Qg7 19. Qxg7 Bxg7 20. fxg6 fxg6 21. Rf1 Rf8 22. Rxf8+ Bxf8 23. Ne2 Ne7 24. Nf4 Kd7 25. a4 Bg7 26. Kd2 Nc4+ 27. Bxc4 dxc4 28. Ne2 b5 29. axb5 axb5 30. Nc3 c6 31. Ne4 Nd5 32. b3 cxb3 33. Nc5+ Ke7 34. Nxb3 Nb6 35. Na5 Kd7 36. Kd3 Bf8 37. Nb3 Nd5 38. Bd2 1/2-1/2

[Event "Altenkirchen Seniors op 18th"]
[Site "Altenkirchen"]
[Date "2021.07.07"]
[Round "6"]
[White "Duijker, Bert"]
[Black "Krueger, Erich"]
[Result "1/2-1/2"]
[ECO "E62"]
[WhiteElo "1853"]
[BlackElo "2106"]
[PlyCount "112"]
[EventDate "2021.07.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 g6 3. d4 Bg7 4. Nc3 0-0 5. g3 d6 6. Bg2 c6 7. 0-0 Qa5 8. e4 Bg4 9. h3 Bxf3 10. Bxf3 Nfd7 11. Be3 a6 12. Qd2 b5 13. cxb5 axb5 14. Rfd1 Nb6 15. b3 c5 16. e5 Ra7 17. dxc5 dxc5 18. Bxc5 Bxe5 19. b4 Qa6 20. Bxb6 Qxb6 21. Nd5 Qa6 22. Rab1 e6 23. Ne3 Qxa2 24. Qd3 Qa4 25. Qc2 Qxc2 26. Nxc2 Rc8 27. Nd4 Bxd4 28. Rxd4 Nc6 29. Bxc6 Rxc6 30. Rb2 Kg7 31. Kg2 Rc4 32. Rxc4 bxc4 33. Rc2 Rc7 34. b5 Rb7 35. Rxc4 Rxb5 36. g4 h5 37. Ra4 h4 38. Rc4 g5 39. Re4 Rb6 40. Rc4 f5 41. gxf5 exf5 42. Ra4 Kf6 43. Rc4 Rd6 44. Ra4 Ke5 45. Rb4 Rd4 46. Rb8 Kf4 47. Rh8 Rd5 48. Rh7 Ke5 49. Rg7 Kf6 50. Rg8 Rd7 51. Ra8 Rf7 52. Ra6+ Kg7 53. Rb6 f4 54. Kf3 Rf6 55. Rb5 Kh6 56. Kg4 Rg6 1/2-1/2

[Event "Altenkirchen Seniors op 18th"]
[Site "Altenkirchen"]
[Date "2021.07.06"]
[Round "5"]
[White "Duijker, Bert"]
[Black "Sand, Rolf"]
[Result "1/2-1/2"]
[ECO "A33"]
[WhiteElo "1853"]
[BlackElo "1937"]
[PlyCount "30"]
[EventDate "2021.07.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]

1. c4 c5 2. Nf3 Nf6 3. d4 cxd4 4. Nxd4 e6 5. a3 Nc6 6. Nc3 d5 7. cxd5 Nxd5 8. Nxc6 bxc6 9. e4 Nxc3 10. Qxd8+ Kxd8 11. bxc3 Bd6 12. Bc4 Kc7 13. Be3 a5 14. f4 Ba6 15. Bxa6 Rxa6 1/2-1/2

[Event "Altenkirchen Seniors op 18th"]
[Site "Altenkirchen"]
[Date "2021.07.05"]
[Round "4"]
[White "Matzat, Andre"]
[Black "Duijker, Bert"]
[Result "1/2-1/2"]
[ECO "E60"]
[WhiteElo "1985"]
[BlackElo "1853"]
[PlyCount "69"]
[EventDate "2021.07.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]

1. d4 g6 2. Nf3 Bg7 3. g3 d6 4. Bg2 Nd7 5. 0-0 Ngf6 6. b3 c5 7. Bb2 0-0 8. c4 Rb8 9. Nc3 b6 10. Qd2 Bb7 11. d5 Ng4 12. h3 Ngf6 13. e4 Ne8 14. Rfe1 h6 15. Nd1 e5 16. dxe6 fxe6 17. Nh2 Qe7 18. Ng4 h5 19. Nh2 Kh7 20. h4 Ne5 21. Ne3 Nc6 22. Nf3 Bh6 23. Rad1 e5 24. Qd3 Nd4 25. Nd5 Bxd5 26. exd5 Nxf3+ 27. Bxf3 Qf7 28. Kg2 Nf6 29. Re2 Rbe8 30. Be4 Nxe4 31. Qxe4 Qf5 32. Bc1 Bxc1 33. Rxc1 Re7 34. Qxf5 gxf5 35. Rc3 1/2-1/2

[Event "Altenkirchen Seniors op 18th"]
[Site "Altenkirchen"]
[Date "2021.07.04"]
[Round "3"]
[White "Duijker, Bert"]
[Black "Hehemann, Peter"]
[Result "1-0"]
[ECO "E01"]
[WhiteElo "1853"]
[PlyCount "53"]
[EventDate "2021.07.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]

1. Nf3 d5 2. d4 e6 3. c4 Nf6 4. g3 c5 5. cxd5 Nxd5 6. Bg2 Nc6 7. 0-0 c4 8. e4 Ndb4 9. Na3 Nd3 10. Nxc4 Nxc1 11. Rxc1 Be7 12. d5 exd5 13. exd5 Nb4 14. d6 Bf6 15. Re1+ Be6 16. Nfe5 0-0 17. a3 Bxc4 18. axb4 Ba6 19. Qd5 Bxe5 20. Rxe5 b5 21. Qxa8 Qxa8 22. Bxa8 Rxa8 23. Rc7 Rd8 24. Rxa7 Bc8 25. d7 Bxd7 26. Rxd7 Rf8 27. Rxb5 1-0

[Event "Altenkirchen Seniors op 18th"]
[Site "Altenkirchen"]
[Date "2021.07.03"]
[Round "2"]
[White "Huettemann, Karl Heinz"]
[Black "Duijker, Bert"]
[Result "1-0"]
[ECO "A36"]
[WhiteElo "2036"]
[BlackElo "1853"]
[PlyCount "71"]
[EventDate "2021.07.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]

1. c4 g6 2. Nc3 Bg7 3. g3 c5 4. Bg2 Nc6 5. e4 e6 6. Nge2 Nge7 7. 0-0 0-0 8. d3 b6 9. Be3 Bb7 10. d4 cxd4 11. Nxd4 d6 12. Qd2 Nxd4 13. Bxd4 Bxd4 14. Qxd4 e5 15. Qd3 f5 16. Rad1 Rc8 17. Qxd6 Qxd6 18. Rxd6 Bxe4 19. Nxe4 fxe4 20. Rd7 Rfe8 21. Bxe4 a5 22. b3 Rcd8 23. Rfd1 Rxd7 24. Rxd7 Kf8 25. Kf1 Rb8 26. a4 Ke8 27. Ra7 h5 28. h4 Kf8 29. Ke2 Ke8 30. Ke3 Kf8 31. f4 exf4+ 32. Kxf4 Kf7 33. Bxg6+ Kxg6 34. Rxe7 Rf8+ 35. Ke4 Rf6 36. Re5 1-0

[Event "Altenkirchen Seniors op 18th"]
[Site "Altenkirchen"]
[Date "2021.07.02"]
[Round "1"]
[White "Duijker, Bert"]
[Black "Bocksberger, Andreas"]
[Result "1-0"]
[ECO "D07"]
[WhiteElo "1853"]
[PlyCount "77"]
[EventDate "2021.07.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]

1. Nf3 Nc6 2. d4 d5 3. c4 e6 4. a3 h6 5. Nc3 Nf6 6. h3 a6 7. e3 Bd7 8. Bd3 Na5 9. Ne5 c5 10. dxc5 Bxc5 11. b4 Bd6 12. Nxd7 Nxd7 13. bxa5 Qxa5 14. Bd2 Be5 15. Nxd5 Qd8 16. Nc3 0-0 17. 0-0 Qf6 18. Rc1 Nc5 19. Bb1 Rfd8 20. Qc2 Rd3 21. Qa2 Bxc3 22. Bxd3 Nxd3 23. Rxc3 Rd8 24. Rc2 Ne5 25. Bc3 Qg5 26. Bxe5 Qxe5 27. Qb2 Qc5 28. Qb4 Qc6 29. Rfc1 e5 30. c5 Re8 31. Qb6 Qd5 32. c6 Re6 33. Qxb7 Rg6 34. Qb8+ Kh7 35. f4 Qe4 36. Qxe5 Qf3 37. f5 Rg5 38. Qf4 Qxh3 39. Qxg5 1-0

[Event "Berlin-ch Seniors op 36th"]
[Site "Berlin"]
[Date "2020.02.01"]
[Round "5.37"]
[White "Duijker, Bert"]
[Black "Kranch, Klaus"]
[Result "1/2-1/2"]
[ECO "D11"]
[WhiteElo "1858"]
[BlackElo "1733"]
[PlyCount "34"]
[EventDate "2020.01.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. Nf3 d5 2. d4 Nf6 3. c4 c6 4. Nbd2 e6 5. a3 Nbd7 6. Qc2 Bd6 7. g3 0-0 8. Bg2 Re8 9. 0-0 e5 10. dxe5 Nxe5 11. c5 Bc7 12. Nxe5 Bxe5 13. Nf3 Bc7 14. Be3 Ne4 15. Nd4 Qe7 16. Bxe4 Qxe4 17. Qxe4 Rxe4 1/2-1/2

[Event "RLP Seniors op 17th"]
[Site "Neustadt an der Weinstrasse"]
[Date "2019.07.27"]
[Round "8"]
[White "Hauck, Bernd"]
[Black "Duijker, Bert"]
[Result "0-1"]
[ECO "B06"]
[WhiteElo "1675"]
[BlackElo "1906"]
[PlyCount "96"]
[EventDate "2019.07.20"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 192 Extra"]
[Source "Chessbase"]
[SourceDate "2019.11.06"]
[SourceVersion "1"]
[SourceVersionDate "2019.11.06"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Be3 c5 4. c3 cxd4 5. cxd4 d5 6. e5 Nh6 7. Nf3 0-0 8. Be2 f6 9. 0-0 Nc6 10. Nc3 Nf5 11. Qb3 Nxe3 12. fxe3 e6 13. exf6 Bxf6 14. a4 a6 15. Qa3 Be7 16. Qa2 Nb4 17. Qb1 Bd7 18. b3 Rc8 19. Qb2 Bd6 20. Rac1 Qe7 21. Ne5 Bxe5 22. dxe5 Qg5 23. Rxf8+ Rxf8 24. Nd1 Nc6 25. e4 dxe4 26. Rc5 Rf5 27. h4 Qxh4 28. Qd2 Qe7 29. Rc4 Rxe5 30. Qf4 Qf7 31. Qe3 Ne7 32. Rxe4 Rxe4 33. Qxe4 Bc6 34. Qe5 Qf5 35. Qd6 Qd5 36. Qb8+ Kg7 37. Bf3 Qd4+ 38. Nf2 Bxf3 39. gxf3 Qd5 40. Qe8 Nf5 41. Ne4 h6 42. Qb8 g5 43. Qc7+ Kg6 44. Qc8 Qd1+ 45. Kf2 Qd4+ 46. Ke1 Qe3+ 47. Kf1 Qxf3+ 48. Nf2 Ng3+ 0-1

[Event "RLP Seniors op 17th"]
[Site "Neustadt an der Weinstrasse"]
[Date "2019.07.26"]
[Round "7"]
[White "Duijker, Bert"]
[Black "Alvarez, Luis"]
[Result "0-1"]
[ECO "B28"]
[WhiteElo "1906"]
[BlackElo "1786"]
[PlyCount "112"]
[EventDate "2019.07.20"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 192 Extra"]
[Source "Chessbase"]
[SourceDate "2019.11.06"]
[SourceVersion "1"]
[SourceVersionDate "2019.11.06"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 c5 3. Nc3 d6 4. d4 cxd4 5. Nxd4 a6 6. e4 Nc6 7. Be2 Nxd4 8. Qxd4 h6 9. 0-0 e5 10. Qd3 Be7 11. h3 g5 12. f3 Bd7 13. Be3 Bc6 14. Rfd1 Qc7 15. a4 Nd7 16. b4 b6 17. Kf1 0-0 18. b5 axb5 19. cxb5 Bb7 20. Rdc1 Nc5 21. Bxc5 dxc5 22. Qc4 Bd8 23. Rd1 Qe7 24. Rd2 Bc8 25. Qd5 Ra7 26. Qd6 Qxd6 27. Rxd6 Kg7 28. Bc4 Bc7 29. Rd2 Ra8 30. Bd5 Rb8 31. Rad1 Rd8 32. Ke2 Kf8 33. Bc6 Rxd2+ 34. Rxd2 Be6 35. Bd5 Bc8 36. Bb3 Ke8 37. Nd5 Bd8 38. Ne3 Be7 39. Bd5 Kf8 40. Nc4 f6 41. Kd3 Ke8 42. Kc3 Kf8 43. Rd1 Kg7 44. Nd2 Kf8 45. Kc4 Bd8 46. Nb3 Be7 47. Ra1 Bd7 48. Ra3 Ke8 49. Bc6 Bxc6 50. bxc6 Kd8 51. Kb5 c4 52. Ra1 cxb3 53. Rb1 Kc7 54. Rxb3 Rd8 55. a5 bxa5 56. Kxa5 Ra8+ 0-1

[Event "RLP Seniors op 17th"]
[Site "Neustadt an der Weinstrasse"]
[Date "2019.07.25"]
[Round "6"]
[White "Reese, Joachim"]
[Black "Duijker, Bert"]
[Result "1-0"]
[ECO "A40"]
[WhiteElo "1706"]
[BlackElo "1906"]
[PlyCount "79"]
[EventDate "2019.07.20"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 192 Extra"]
[Source "Chessbase"]
[SourceDate "2019.11.06"]
[SourceVersion "1"]
[SourceVersionDate "2019.11.06"]
[SourceQuality "1"]

1. d4 g6 2. Nc3 Bg7 3. Bf4 d6 4. Qd2 Nc6 5. Nf3 Bg4 6. d5 Nb8 7. Nd4 c6 8. f3 Bd7 9. e4 c5 10. Nb3 a5 11. a4 Na6 12. Nd1 b6 13. c3 h5 14. Bc4 h4 15. Qe2 Nc7 16. e5 dxe5 17. Bxe5 Bxe5 18. Qxe5 Nf6 19. Ne3 Rh5 20. Qf4 g5 21. Qe5 g4 22. Qf4 e5 23. dxe6 Bxe6 24. Rd1 Qe7 25. 0-0 h3 26. fxg4 hxg2 27. Rfe1 Nxg4 28. Nxg4 Rf5 29. Qe4 Rf1+ 30. Bxf1 gxf1Q+ 31. Kxf1 f5 32. Qc6+ Kf7 33. Ne5+ Kg8 34. Qg2+ Kh7 35. Qg6+ Kh8 36. Qh5+ Qh7 37. Qxh7+ Kxh7 38. Nc1 Bd5 39. c4 Be4 40. Rd7+ 1-0

[Event "RLP Seniors op 17th"]
[Site "Neustadt an der Weinstrasse"]
[Date "2019.07.24"]
[Round "5"]
[White "Teutsch, Michael1111"]
[Black "Duijker, Bert"]
[Result "1/2-1/2"]
[ECO "A42"]
[WhiteElo "1790"]
[BlackElo "1906"]
[PlyCount "87"]
[EventDate "2019.07.20"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 192 Extra"]
[Source "Chessbase"]
[SourceDate "2019.11.06"]
[SourceVersion "1"]
[SourceVersionDate "2019.11.06"]
[SourceQuality "1"]

1. d4 g6 2. c4 Bg7 3. Nc3 d6 4. e4 Nc6 5. Nf3 Bg4 6. Be3 e5 7. d5 Bxf3 8. Qxf3 Nd4 9. Qd1 Ne7 10. Be2 0-0 11. 0-0 f5 12. f3 Qd7 13. Nb5 c5 14. dxc6 Nexc6 15. Qd2 Rac8 16. b3 Nxb5 17. cxb5 Nd4 18. Rac1 fxe4 19. fxe4 Rxf1+ 20. Bxf1 Rc5 21. Rxc5 dxc5 22. a4 h5 23. Bc4+ Kh7 24. Qf2 b6 25. Qf7 Ne2+ 26. Kf2 Qxf7+ 27. Bxf7 Nc3 28. Bd5 Bh6 29. Bxh6 Kxh6 30. Ke3 h4 31. Kd2 Na2 32. Kd3 Kg5 33. Ke3 Nb4 34. Kf3 Nc2 35. Bf7 Nd4+ 36. Ke3 Kf6 37. Bc4 g5 38. g4 hxg3 39. hxg3 g4 40. Kf2 Nf3 41. Ke3 Nd4 42. Kf2 Ke7 43. Ke3 Kd6 44. Kf2 1/2-1/2

[Event "RLP Seniors op 17th"]
[Site "Neustadt an der Weinstrasse"]
[Date "2019.07.23"]
[Round "4"]
[White "Duijker, Bert"]
[Black "Lares, Harald"]
[Result "0-1"]
[ECO "B38"]
[WhiteElo "1906"]
[BlackElo "1974"]
[PlyCount "116"]
[EventDate "2019.07.20"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 192 Extra"]
[Source "Chessbase"]
[SourceDate "2019.11.06"]
[SourceVersion "1"]
[SourceVersionDate "2019.11.06"]
[SourceQuality "1"]

1. Nf3 c5 2. c4 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. e4 d6 7. Be2 Bg7 8. Be3 0-0 9. 0-0 Bd7 10. Rc1 Nxd4 11. Bxd4 Bc6 12. f3 Nd7 13. Bxg7 Kxg7 14. Qd4+ Kg8 15. Nd5 Nc5 16. Rc2 f5 17. Nb4 fxe4 18. Nxc6 bxc6 19. fxe4 Rxf1+ 20. Kxf1 Qf8+ 21. Bf3 Qf4 22. Kg1 a5 23. Qd2 Qe5 24. Qc3 Nd7 25. Bg4 Qc5+ 26. Rf2 Ne5 27. Be6+ Kg7 28. Kf1 Rf8 29. Rxf8 Kxf8 30. Qd2 Kg7 31. b3 h6 32. h3 Kf6 33. Bg8 Kg7 34. Be6 Kf6 35. Bg8 g5 36. Qe2 Kg7 37. Be6 Qd4 38. g3 Kf6 39. Bg8 Qd3 40. Kf2 Qxe2+ 41. Kxe2 Nd7 42. Ke3 Nc5 43. Bh7 e6 44. Kd4 Nd7 45. Bg8 c5+ 46. Ke3 Nf8 47. e5+ Kg7 48. Bxe6 Nxe6 49. exd6 Kf7 50. Ke4 Ke8 51. Kd5 Kd7 52. a3 h5 53. h4 g4 54. a4 Nd4 55. Kxc5 Nf5 56. Kb5 Kxd6 57. c5+ Kc7 58. Kxa5 Nxg3 0-1

[Event "RLP Seniors op 17th"]
[Site "Neustadt an der Weinstrasse"]
[Date "2019.07.22"]
[Round "3"]
[White "Duijker, Bert"]
[Black "Titz, Waldemar"]
[Result "1-0"]
[ECO "A53"]
[WhiteElo "1906"]
[BlackElo "1749"]
[PlyCount "99"]
[EventDate "2019.07.20"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 192 Extra"]
[Source "Chessbase"]
[SourceDate "2019.11.06"]
[SourceVersion "1"]
[SourceVersionDate "2019.11.06"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 d6 3. d4 Bg4 4. Nbd2 g6 5. h3 Bxf3 6. Nxf3 Bg7 7. Bf4 c6 8. Qc2 Nbd7 9. e4 Qa5+ 10. Bd2 Qc7 11. Be2 a6 12. 0-0 0-0 13. Rfd1 Rac8 14. Rac1 e5 15. dxe5 dxe5 16. c5 Rfe8 17. b4 Rcd8 18. Bc4 Nf8 19. Bc3 Rxd1+ 20. Rxd1 Nh5 21. Rd6 Nf4 22. Kf1 Kh8 23. Ng5 N4e6 24. Nxe6 fxe6 25. Qb2 Qf7 26. Bxe5 Bxe5 27. Qxe5+ Qg7 28. Qxg7+ Kxg7 29. f4 Kf6 30. g4 Ke7 31. Kf2 Rd8 32. e5 Re8 33. Kg3 h6 34. h4 Rd8 35. h5 Rxd6 36. cxd6+ Kd7 37. Bd3 gxh5 38. gxh5 Kd8 39. f5 Kd7 40. Kf4 Kd8 41. Bc4 Kd7 42. a4 b5 43. axb5 axb5 44. Bb3 exf5 45. Kxf5 Nh7 46. Kg6 Ng5 47. Kxh6 Nf3 48. Kg7 Nxe5 49. h6 Kxd6 50. h7 1-0

[Event "RLP Seniors op 17th"]
[Site "Neustadt an der Weinstrasse"]
[Date "2019.07.21"]
[Round "2"]
[White "Mertens, Klaus"]
[Black "Duijker, Bert"]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "2119"]
[BlackElo "1906"]
[PlyCount "103"]
[EventDate "2019.07.20"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 192 Extra"]
[Source "Chessbase"]
[SourceDate "2019.11.06"]
[SourceVersion "1"]
[SourceVersionDate "2019.11.06"]
[SourceQuality "1"]

1. Nf3 c5 2. g3 Nc6 3. Bg2 d5 4. d4 e6 5. 0-0 Nf6 6. b3 cxd4 7. Nxd4 Be7 8. Bb2 0-0 9. Nd2 Bd7 10. c4 Nxd4 11. Bxd4 Bc6 12. Rc1 Qd7 13. Nf3 Rfc8 14. Ne5 Qe8 15. Rc2 Nd7 16. Nxc6 bxc6 17. cxd5 cxd5 18. Bb2 Rxc2 19. Qxc2 Rc8 20. Qd2 Bf6 21. e4 dxe4 22. Bxe4 Bxb2 23. Qxb2 Nf6 24. Bf3 Rc7 25. Rc1 Qc8 26. Rxc7 Qxc7 27. Qd4 h6 28. Qa4 g5 29. a3 Kg7 30. b4 Nd7 31. Qc6 Qxc6 32. Bxc6 Nb8 33. Bb5 Kf6 34. Kg2 Ke5 35. Kf3 f5 36. Ke3 f4+ 37. Kf3 fxg3 38. fxg3 a6 39. Be8 Kd4 40. a4 e5 41. b5 e4+ 42. Ke2 a5 43. g4 Kc5 44. Ke3 Kb4 45. b6 Kc5 46. b7 Kb6 47. Kxe4 Kxb7 48. Kf5 Na6 49. Kg6 Nc7 50. Bf7 Na6 51. Kxh6 Nc5 52. Kxg5 1-0

[Event "RLP Seniors op 17th"]
[Site "Neustadt an der Weinstrasse"]
[Date "2019.07.20"]
[Round "1"]
[White "Duijker, Bert"]
[Black "Hetzer, Margarete"]
[Result "1-0"]
[ECO "E65"]
[WhiteElo "1906"]
[BlackElo "1375"]
[PlyCount "53"]
[EventDate "2019.07.20"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 192 Extra"]
[Source "Chessbase"]
[SourceDate "2019.11.06"]
[SourceVersion "1"]
[SourceVersionDate "2019.11.06"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 g6 3. d4 d6 4. g3 Bg7 5. Bg2 0-0 6. 0-0 c5 7. Nc3 Nc6 8. dxc5 dxc5 9. Bf4 Re8 10. Rc1 h6 11. h4 Be6 12. b3 Ng4 13. e4 Nd4 14. Nd5 Rc8 15. Nxd4 cxd4 16. Qd2 a6 17. f3 Ne3 18. Nxe3 dxe3 19. Bxe3 Qc7 20. Qf2 Qa5 21. Rfd1 Rc6 22. Bf1 Rd8 23. Rd3 Rcd6 24. Rcd1 f5 25. Rxd6 exd6 26. Bb6 Bd4 27. Qxd4 1-0

[Event "Berlin-ch Seniors op 35th"]
[Site "Berlin"]
[Date "2019.02.07"]
[Round "9"]
[White "Duijker, Bert"]
[Black "Paul, Reinhart"]
[Result "1-0"]
[ECO "B38"]
[WhiteElo "1902"]
[BlackElo "1988"]
[PlyCount "51"]
[EventDate "2019.01.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 189 Extra"]
[Source "ChessBase"]
[SourceDate "2019.06.03"]
[SourceVersion "1"]
[SourceVersionDate "2019.06.03"]
[SourceQuality "1"]

1. Nf3 c5 2. c4 Nf6 3. d4 cxd4 4. Nxd4 d6 5. Nc3 g6 6. e4 Bg7 7. Be2 0-0 8. Be3 a6 9. 0-0 Bd7 10. Rc1 Nc6 11. f3 Nxd4 12. Bxd4 Bc6 13. Qd2 e6 14. Rfd1 Qc7 15. b3 Rad8 16. g3 Qe7 17. Bb6 Rd7 18. Qe3 h5 19. b4 Kh7 20. b5 Bh6 21. f4 g5 22. bxc6 bxc6 23. e5 Ng4 24. Bxg4 hxg4 25. Qe4+ Kh8 26. exd6 1-0

[Event "Berlin-ch Seniors op 35th"]
[Site "Berlin"]
[Date "2019.02.06"]
[Round "8"]
[White "Sebastian, Martin"]
[Black "Duijker, Bert"]
[Result "1/2-1/2"]
[ECO "B06"]
[WhiteElo "1957"]
[BlackElo "1902"]
[PlyCount "43"]
[EventDate "2019.01.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 189 Extra"]
[Source "ChessBase"]
[SourceDate "2019.06.03"]
[SourceVersion "1"]
[SourceVersionDate "2019.06.03"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nf3 d6 4. h3 a6 5. Be3 c5 6. c3 Nf6 7. Bd3 0-0 8. 0-0 cxd4 9. Nxd4 Nc6 10. Na3 Bd7 11. Ne2 b5 12. Rc1 Qa5 13. Bb1 Rfc8 14. Nd4 Ne5 15. Bg5 Nc4 16. Nxc4 bxc4 17. Be3 Rab8 18. Qd2 Qh5 19. Rce1 Bc6 20. Nxc6 Rxc6 21. Qe2 Qxe2 22. Rxe2 1/2-1/2

[Event "Berlin-ch Seniors op 35th"]
[Site "Berlin"]
[Date "2019.01.30"]
[Round "2"]
[White "Schulz, Michael"]
[Black "Duijker, Bert"]
[Result "1-0"]
[ECO "B06"]
[WhiteElo "2233"]
[BlackElo "1902"]
[PlyCount "63"]
[EventDate "2019.01.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 189 Extra"]
[Source "ChessBase"]
[SourceDate "2019.06.03"]
[SourceVersion "1"]
[SourceVersionDate "2019.06.03"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. h4 h6 4. h5 g5 5. f4 gxf4 6. Nf3 d6 7. Bxf4 c5 8. dxc5 Qa5+ 9. Qd2 Qxc5 10. Nc3 Bxc3 11. bxc3 Nc6 12. Rb1 a6 13. Be3 Qa5 14. Bc4 Ne5 15. Nxe5 Qxe5 16. 0-0 Nf6 17. Bd4 Qg5 18. Qxg5 hxg5 19. Bxf6 exf6 20. Rxf6 Rxh5 21. Bxf7+ Ke7 22. Rbf1 Rh4 23. Bd5 Rh7 24. Rf7+ Rxf7 25. Rxf7+ Ke8 26. Rg7 g4 27. Kf2 Rb8 28. Ke3 b5 29. Kd4 Rb6 30. Rg8+ Kd7 31. Rxg4 Ke7 32. Rg8 1-0

[Event "Rheinland Pfalz op Seniors 16th"]
[Site "Neustadt an der Weinstrasse"]
[Date "2018.07.15"]
[Round "9"]
[White "Hennrich, Reinhard"]
[Black "Duijker, Bert"]
[Result "1/2-1/2"]
[ECO "A03"]
[WhiteElo "1836"]
[BlackElo "1874"]
[PlyCount "25"]
[EventDate "2018.07.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. b3 d5 2. e3 Nd7 3. f4 Ngf6 4. Bb2 e6 5. Nf3 Be7 6. Be2 0-0 7. 0-0 c5 8. Qe1 Ne4 9. d3 Bf6 10. Bxf6 Nexf6 11. Ne5 Qc7 12. Qg3 b5 13. Nd2 1/2-1/2

[Event "Rheinland Pfalz op Seniors 16th"]
[Site "Neustadt an der Weinstrasse"]
[Date "2018.07.14"]
[Round "8"]
[White "Duijker, Bert"]
[Black "Schowalter, Gerd"]
[Result "1/2-1/2"]
[ECO "D23"]
[WhiteElo "1874"]
[BlackElo "1913"]
[PlyCount "51"]
[EventDate "2018.07.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. Nf3 d5 2. d4 Nf6 3. c4 c6 4. Qc2 dxc4 5. Qxc4 Bf5 6. Nc3 e6 7. a3 Nbd7 8. e3 Be7 9. Be2 0-0 10. 0-0 Nb6 11. Qb3 Nfd5 12. Rd1 Rc8 13. Na4 Nxa4 14. Qxa4 Qc7 15. Bd2 Bd6 16. Rac1 Be4 17. h3 Qe7 18. Ne5 Qg5 19. Bf3 Bxf3 20. Nxf3 Qe7 21. b4 Bb8 22. Qc2 Qc7 23. Qe4 Ne7 24. b5 Qd7 25. bxc6 Nxc6 26. Ng5 1/2-1/2

[Event "Rheinland Pfalz op Seniors 16th"]
[Site "Neustadt an der Weinstrasse"]
[Date "2018.07.13"]
[Round "7"]
[White "Diehl, Klaus"]
[Black "Duijker, Bert"]
[Result "1-0"]
[ECO "A01"]
[WhiteElo "2043"]
[BlackElo "1874"]
[PlyCount "77"]
[EventDate "2018.07.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. b3 d5 2. Bb2 c5 3. e3 Bf5 4. Bb5+ Nd7 5. Nf3 a6 6. Be2 Ngf6 7. d3 h6 8. 0-0 e6 9. Nbd2 Be7 10. c4 0-0 11. cxd5 exd5 12. Re1 Rc8 13. Nf1 Bd6 14. Ng3 Bxg3 15. hxg3 Re8 16. Qd2 Qb6 17. Rac1 Bg6 18. Rc2 Qd6 19. Qc1 b5 20. Rd1 Qb8 21. Qa1 Re6 22. Nh4 Bh7 23. Rcd2 Qb6 24. g4 Ne8 25. Bf3 Ndf6 26. g3 Rd8 27. Nf5 Bxf5 28. gxf5 Red6 29. Be5 R6d7 30. g4 d4 31. exd4 cxd4 32. Rc1 Re7 33. Rc6 Qa5 34. Re2 Red7 35. Bf4 Nd5 36. Bd2 Qa3 37. Bxd5 Rxd5 38. Qe1 Nf6 39. Bb4 1-0

[Event "Rheinland Pfalz op Seniors 16th"]
[Site "Neustadt an der Weinstrasse"]
[Date "2018.07.12"]
[Round "6"]
[White "Duijker, Bert"]
[Black "Klaus, Rainer"]
[Result "1/2-1/2"]
[ECO "E01"]
[WhiteElo "1874"]
[BlackElo "1898"]
[PlyCount "54"]
[EventDate "2018.07.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. Nf3 d5 2. d4 Nf6 3. c4 c6 4. Qc2 e6 5. Nbd2 Nbd7 6. g3 Bd6 7. Bg2 0-0 8. 0-0 Re8 9. e4 dxe4 10. Nxe4 Nxe4 11. Qxe4 e5 12. dxe5 Nxe5 13. Qc2 Nxf3+ 14. Bxf3 Bh3 15. Bg2 Bxg2 16. Kxg2 b6 17. Be3 c5 18. Rad1 Qc7 19. Rd5 Rad8 20. Rfd1 Be5 21. b3 Rxd5 22. Rxd5 Rd8 23. Qe4 Rxd5 24. Qxd5 Qd6 25. Qa8+ Qb8 26. Qc6 g6 27. Kf3 Kg7 1/2-1/2

[Event "Rheinland Pfalz op Seniors 16th"]
[Site "Neustadt an der Weinstrasse"]
[Date "2018.07.11"]
[Round "5"]
[White "Weyrauch, Erich"]
[Black "Duijker, Bert"]
[Result "1/2-1/2"]
[ECO "B08"]
[WhiteElo "2083"]
[BlackElo "1874"]
[PlyCount "65"]
[EventDate "2018.07.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. e4 g6 2. Bc4 Bg7 3. Nf3 d6 4. d4 Nf6 5. Nc3 0-0 6. h3 Nxe4 7. Nxe4 d5 8. Bd3 dxe4 9. Bxe4 Nd7 10. Bd3 c5 11. c3 cxd4 12. Nxd4 e5 13. Ne2 Nc5 14. Bc2 Qxd1+ 15. Bxd1 Nd3+ 16. Kf1 Be6 17. b3 a5 18. Ba3 Rfd8 19. Bc2 b6 20. Rd1 Nc5 21. f3 Rxd1+ 22. Bxd1 Rd8 23. Kf2 Rd2 24. Bxc5 bxc5 25. a4 f5 26. Ke3 Rb2 27. c4 Bh6+ 28. f4 e4 29. g3 Bg7 30. h4 h5 31. Rg1 Kf7 32. Rh1 Rb1 33. Rg1 1/2-1/2

[Event "Rheinland Pfalz op Seniors 16th"]
[Site "Neustadt an der Weinstrasse"]
[Date "2018.07.10"]
[Round "4"]
[White "Duijker, Bert"]
[Black "Ranker, Klemens"]
[Result "1/2-1/2"]
[ECO "B38"]
[WhiteElo "1874"]
[BlackElo "1822"]
[PlyCount "40"]
[EventDate "2018.07.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 c5 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 g6 6. e4 d6 7. Be2 Bg7 8. Be3 0-0 9. 0-0 Bd7 10. f3 a6 11. Qd2 Rc8 12. Rac1 Ne8 13. Rfd1 Nxd4 14. Bxd4 Bxd4+ 15. Qxd4 Nf6 16. b3 Qa5 17. Qe3 Qc5 18. Kf2 Qxe3+ 19. Kxe3 Rc7 20. Nd5 Nxd5+ 1/2-1/2

[Event "Rheinland Pfalz op Seniors 16th"]
[Site "Neustadt an der Weinstrasse"]
[Date "2018.07.09"]
[Round "3"]
[White "Haase, Reinhard"]
[Black "Duijker, Bert"]
[Result "1/2-1/2"]
[ECO "A49"]
[WhiteElo "2133"]
[BlackElo "1874"]
[PlyCount "85"]
[EventDate "2018.07.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. d4 g6 2. g3 Bg7 3. Bg2 d6 4. Nf3 Nd7 5. 0-0 Ngf6 6. Re1 0-0 7. e4 e5 8. dxe5 Nxe5 9. Nxe5 dxe5 10. b3 Bg4 11. f3 Be6 12. Bb2 Nd7 13. Nd2 c6 14. Qe2 Qb6+ 15. Kh1 Rfd8 16. Rad1 a5 17. Nc4 Bxc4 18. Qxc4 Nf8 19. Qe2 Ne6 20. Bh3 Nf8 21. a4 Rxd1 22. Rxd1 Rd8 23. Rxd8 Qxd8 24. Kg2 Qd6 25. Bc3 b6 26. Qd2 Qxd2+ 27. Bxd2 f6 28. Be3 c5 29. Kf2 Kf7 30. Ke2 Ne6 31. Bxe6+ Kxe6 32. Kd3 Kd6 33. Kc4 Kc6 34. g4 g5 35. Bf2 h6 36. h4 Bf8 37. h5 Bd6 38. c3 Be7 39. Be1 Bd6 40. b4 Be7 41. Bd2 Bf8 42. b5+ Kd6 43. Bc1 1/2-1/2

[Event "Rheinland Pfalz op Seniors 16th"]
[Site "Neustadt an der Weinstrasse"]
[Date "2018.07.08"]
[Round "2"]
[White "Duijker, Bert"]
[Black "Hagen, Peter"]
[Result "1/2-1/2"]
[ECO "D07"]
[WhiteElo "1874"]
[BlackElo "2199"]
[PlyCount "87"]
[EventDate "2018.07.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. Nf3 d5 2. d4 Nc6 3. c4 Bg4 4. cxd5 Bxf3 5. gxf3 Qxd5 6. e3 e5 7. Nc3 Bb4 8. Bd2 Bxc3 9. bxc3 Qd6 10. Rb1 Nge7 11. Rxb7 0-0 12. Bd3 Rab8 13. Rb1 Qe6 14. 0-0 Rxb1 15. Bxb1 Rb8 16. Qc2 Qh3 17. d5 Ng6 18. Qf5 Qxf5 19. Bxf5 Nh4 20. dxc6 Nxf5 21. e4 Nd6 22. Be3 a6 23. Bc5 Kf8 24. Rd1 Ke7 25. f4 Rb5 26. Bxd6+ cxd6 27. fxe5 Rxe5 28. Rd5 Rxe4 29. Ra5 Rc4 30. Rxa6 Rxc3 31. Ra7+ Ke6 32. c7 f5 33. Kf1 g6 34. Ke2 Kd7 35. c8Q+ Kxc8 36. Rxh7 Rc2+ 37. Ke3 Rxa2 38. Rg7 Ra3+ 39. Kd4 Rf3 40. Kd5 Rxf2 41. Kxd6 Rg2 42. Ke5 Rg4 43. Kd5 g5 44. Kc6 1/2-1/2

[Event "Rheinland Pfalz op Seniors 16th"]
[Site "Neustadt an der Weinstrasse"]
[Date "2018.07.07"]
[Round "1"]
[White "Reese, Joachim"]
[Black "Duijker, Bert"]
[Result "0-1"]
[ECO "A42"]
[WhiteElo "1717"]
[BlackElo "1874"]
[PlyCount "44"]
[EventDate "2018.07.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. d4 g6 2. c4 Bg7 3. Nc3 d6 4. e4 e5 5. d5 f5 6. f3 Nf6 7. Be3 fxe4 8. fxe4 Ng4 9. Qd2 Nxe3 10. Qxe3 0-0 11. Nf3 h6 12. Be2 Nd7 13. b4 a5 14. Rb1 axb4 15. Rxb4 Nc5 16. 0-0 Bd7 17. Ra1 Ra3 18. Qc1 Ra8 19. a4 b6 20. Nd2 Qf6 21. Qf1 Qg5 22. Nf3 Qe3+ 0-1

[Event "Schleswig Holstein-ch Seniors op 11th"]
[Site "Buesum"]
[Date "2017.09.16"]
[Round "9"]
[White "Duijker, Bert"]
[Black "Mentink, Toon"]
[Result "1-0"]
[ECO "E62"]
[WhiteElo "1868"]
[BlackElo "1946"]
[PlyCount "83"]
[EventDate "2017.09.08"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 d6 3. d4 g6 4. g3 Bg7 5. Bg2 0-0 6. 0-0 Nc6 7. Nc3 h6 8. e4 e5 9. d5 Ne7 10. Ne1 c6 11. h3 Nh7 12. Nd3 f5 13. Qe2 c5 14. f4 exf4 15. gxf4 fxe4 16. Nxe4 Nf5 17. Rb1 Qh4 18. Qg4 Bd4+ 19. Kh2 g5 20. Qxh4 gxh4 21. b4 b6 22. bxc5 bxc5 23. Bb2 Ba6 24. Bxd4 cxd4 25. Nd2 Rae8 26. Nb4 Re2 27. Nxa6 Rxd2 28. Nc7 Ne3 29. Rg1 Nf6 30. Ne6 Rc8 31. Rb7 Nh5 32. c5 dxc5 33. d6 Rxa2 34. d7 Ra8 35. Rc7 Ng3 36. Rc8+ Rxc8 37. dxc8Q+ Kf7 38. Nd8+ Kg7 39. Qd7+ Kg6 40. Qe6+ Kg7 41. Qxa2 c4 42. Qxa7+ 1-0

[Event "Schleswig Holstein-ch Seniors op 11th"]
[Site "Buesum"]
[Date "2017.09.15"]
[Round "8"]
[White "Van Houten, Henk"]
[Black "Duijker, Bert"]
[Result "0-1"]
[ECO "A01"]
[WhiteElo "1645"]
[BlackElo "1868"]
[PlyCount "92"]
[EventDate "2017.09.08"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. b3 e5 2. Bb2 e4 3. a3 d5 4. e3 Nf6 5. d3 Bg4 6. Be2 Bxe2 7. Qxe2 Be7 8. dxe4 dxe4 9. Qb5+ Nbd7 10. Qxb7 0-0 11. Qb5 Rb8 12. Qe2 c5 13. Nd2 a5 14. a4 Qc7 15. Nh3 h6 16. f3 exf3 17. gxf3 Rfe8 18. 0-0-0 Nd5 19. Nc4 N5f6 20. Rhg1 Bf8 21. Qd2 Rbd8 22. Qxa5 Qxh2 23. Rh1 Qe2 24. Bxf6 gxf6 25. Rdf1 Ne5 26. Rf2 Nxc4 27. Rxe2 Nxa5 28. Nf4 Re5 29. Nd3 Rf5 30. Rg2+ Rg5 31. Rxg5+ fxg5 32. Nb2 f5 33. Rd1 Rxd1+ 34. Kxd1 h5 35. Ke2 Kf7 36. Nc4 Nxc4 37. bxc4 Bd6 38. a5 h4 39. a6 Bb8 40. Kf2 Ke6 41. f4 g4 42. Ke2 Kf6 43. Kf2 Kg6 44. Kg2 Kh5 45. Kh2 g3+ 46. Kh3 Ba7 0-1

[Event "Schleswig Holstein-ch Seniors op 11th"]
[Site "Buesum"]
[Date "2017.09.14"]
[Round "7"]
[White "Duijker, Bert"]
[Black "Armbruester, Juergen"]
[Result "1/2-1/2"]
[ECO "D74"]
[WhiteElo "1868"]
[BlackElo "1961"]
[PlyCount "46"]
[EventDate "2017.09.08"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. Nf3 d5 2. d4 Nf6 3. c4 g6 4. cxd5 Nxd5 5. g3 Bg7 6. Bg2 0-0 7. 0-0 e6 8. e4 Nb6 9. b3 c5 10. Bb2 Nc6 11. a4 Nxd4 12. Ra2 e5 13. a5 Nd7 14. Nc3 Nb8 15. Nxd4 cxd4 16. Nd5 Nc6 17. Qd2 Be6 18. a6 b6 19. Rc1 Rc8 20. Ba3 Re8 21. Rac2 Bd7 22. Bf1 Bf8 23. Bxf8 Kxf8 1/2-1/2

[Event "Schleswig Holstein-ch Seniors op 11th"]
[Site "Buesum"]
[Date "2017.09.13"]
[Round "6"]
[White "Nowack, Achim"]
[Black "Duijker, Bert"]
[Result "1/2-1/2"]
[ECO "B06"]
[WhiteElo "1705"]
[BlackElo "1868"]
[PlyCount "63"]
[EventDate "2017.09.08"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. c3 d6 4. Nf3 Nf6 5. Bd3 0-0 6. 0-0 c5 7. d5 c4 8. Bc2 e6 9. dxe6 Bxe6 10. Bf4 d5 11. e5 Nfd7 12. Bg5 Qe8 13. Re1 Nc6 14. Nd4 Nxd4 15. cxd4 b5 16. Qd2 a5 17. h4 Nb6 18. Qe3 h5 19. Nd2 b4 20. b3 Rc8 21. Bd1 c3 22. Nf1 c2 23. Bxh5 gxh5 24. Bf6 Bf5 25. Qg5 Bg6 26. Bxg7 Kxg7 27. Qf6+ Kg8 28. Qxb6 Qd8 29. Qxd8 Rfxd8 30. Ne3 Rc3 31. Rac1 Kf8 32. Re2 1/2-1/2

[Event "Schleswig Holstein-ch Seniors op 11th"]
[Site "Buesum"]
[Date "2017.09.12"]
[Round "5"]
[White "Duijker, Bert"]
[Black "Schwab, Wolfgang"]
[Result "1-0"]
[ECO "A33"]
[WhiteElo "1868"]
[BlackElo "1790"]
[PlyCount "89"]
[EventDate "2017.09.08"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. Nf3 c5 2. c4 e6 3. d4 cxd4 4. Nxd4 Nc6 5. a3 Nf6 6. Nc3 a6 7. e4 d6 8. Be2 Be7 9. Be3 Qc7 10. Rc1 Ne5 11. f4 Ned7 12. 0-0 b6 13. b4 Bb7 14. Bd3 Rc8 15. Nb3 Qb8 16. Nd2 Qa8 17. Qe2 h5 18. h3 h4 19. f5 e5 20. Nd5 Bxd5 21. cxd5 b5 22. Nb3 0-0 23. Na5 Rxc1 24. Rxc1 Rc8 25. Nc6 Kf8 26. Bf2 Nb8 27. Bxh4 Nxc6 28. dxc6 Rxc6 29. Rxc6 Qxc6 30. Qc2 Qxc2 31. Bxc2 Nd7 32. Bf2 Bd8 33. g4 Bb6 34. a4 bxa4 35. Bxa4 Bxf2+ 36. Kxf2 Ke7 37. Ke3 Nb6 38. Bb3 f6 39. h4 Kd7 40. g5 Kc6 41. gxf6 gxf6 42. Be6 Nd7 43. Bxd7+ Kxd7 44. Kd3 Ke7 45. Kc4 1-0

[Event "Schleswig Holstein-ch Seniors op 11th"]
[Site "Buesum"]
[Date "2017.09.11"]
[Round "4"]
[White "Berenstein, Alexander"]
[Black "Duijker, Bert"]
[Result "1-0"]
[ECO "B06"]
[WhiteElo "1968"]
[BlackElo "1868"]
[PlyCount "122"]
[EventDate "2017.09.08"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Bc4 d6 4. c3 Nf6 5. f3 0-0 6. Ne2 a5 7. a4 d5 8. exd5 Nxd5 9. 0-0 c6 10. Re1 Nd7 11. Bxd5 cxd5 12. Nf4 Nb6 13. Nd3 h6 14. f4 Bf5 15. Nc5 Qc7 16. Na3 Rfe8 17. Be3 Nc4 18. Qe2 b6 19. Nb5 Qc6 20. Nb3 Be4 21. Bf2 f5 22. Nd2 Nd6 23. Rac1 Rac8 24. b3 Bf6 25. c4 Nxb5 26. axb5 Qb7 27. Nxe4 fxe4 28. Rc2 e6 29. c5 bxc5 30. dxc5 Rb8 31. b6 Qc6 32. Ra2 Ra8 33. Ra4 Bc3 34. Rc1 Bb4 35. Bd4 Rf8 36. g3 Rf7 37. Ra2 Kh7 38. Kg2 Raf8 39. h4 h5 40. Kh2 Rg8 41. Be5 Rd8 42. Bd4 Rdf8 43. Rac2 Ba3 44. Ra1 Bb4 45. Rd1 Rd8 46. Be5 Rc8 47. g4 hxg4 48. Qxg4 Bxc5 49. h5 Rg8 50. Rg2 Rfg7 51. Bxg7 Rxg7 52. hxg6+ Kh8 53. Qh5+ Kg8 54. Qe5 Qxb6 55. Rc1 e3 56. Rxc5 Qxc5 57. Qxe6+ Kf8 58. f5 d4 59. Qf6+ Kg8 60. Qd8+ Qf8 61. Qd5+ Kh8 1-0

[Event "Schleswig Holstein-ch Seniors op 11th"]
[Site "Buesum"]
[Date "2017.09.10"]
[Round "3"]
[White "Duijker, Bert"]
[Black "Bondick, Karl Heinz"]
[Result "1/2-1/2"]
[ECO "A94"]
[WhiteElo "1868"]
[BlackElo "1991"]
[PlyCount "66"]
[EventDate "2017.09.08"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. Nf3 f5 2. d4 Nf6 3. c4 e6 4. g3 Be7 5. Bg2 d5 6. 0-0 0-0 7. b3 c6 8. Ba3 Bd7 9. Bxe7 Qxe7 10. Nbd2 Be8 11. Ne5 Nbd7 12. Ndf3 Bh5 13. Rc1 Rad8 14. Nxd7 Nxd7 15. e3 e5 16. Qc2 e4 17. Ne1 Nf6 18. Qd2 dxc4 19. bxc4 b5 20. cxb5 cxb5 21. Qb2 b4 22. Rc5 Nd5 23. Nc2 Bf7 24. Nxb4 Nxb4 25. Qxb4 Bxa2 26. Qa5 Be6 27. Rfc1 Rd7 28. Rc7 Rfd8 29. Bf1 Rxc7 30. Rxc7 Rd7 31. Rc8+ Kf7 32. Rc5 Kg6 33. Re5 Qd6 1/2-1/2

[Event "Schleswig Holstein-ch Seniors op 11th"]
[Site "Buesum"]
[Date "2017.09.09"]
[Round "2"]
[White "Westphal Stubbe, Siegbert"]
[Black "Duijker, Bert"]
[Result "0-1"]
[ECO "A42"]
[WhiteElo "1722"]
[BlackElo "1868"]
[PlyCount "100"]
[EventDate "2017.09.08"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. d4 g6 2. c4 Bg7 3. Nc3 d6 4. e4 Nc6 5. Be3 e5 6. d5 Nce7 7. g4 f5 8. gxf5 gxf5 9. Qh5+ Kf8 10. exf5 Bxf5 11. 0-0-0 Nf6 12. Qe2 Qd7 13. Qd2 h5 14. f3 a6 15. h4 Re8 16. Bh3 Bxh3 17. Nxh3 Nf5 18. Bg5 Nd4 19. Qd3 Qf5 20. Qxf5 Nxf5 21. Ne4 Nd7 22. Nhf2 Bh6 23. Bxh6+ Rxh6 24. Ng5 Nd4 25. Nfe4 Kg8 26. Rdf1 Rf8 27. Kd2 c5 28. Rhg1 Kh8 29. Nc3 Rf4 30. Ne2 Nxe2 31. Kxe2 Nf8 32. b3 b6 33. Rh1 Kg7 34. Rfg1 Kh8 35. Rh3 Ng6 36. Rgh1 Nf8 37. a3 b5 38. cxb5 axb5 39. Rg1 Rg6 40. Rhg3 Rff6 41. Nf7+ Kg7 42. Rxg6+ Nxg6 43. Nd8 Kh6 44. Rh1 Nf4+ 45. Kf2 Nxd5 46. Nc6 e4 47. Rh3 e3+ 48. Ke1 Nf4 49. Rh2 d5 50. Ne5 d4 0-1

[Event "Schleswig Holstein-ch Seniors op 11th"]
[Site "Buesum"]
[Date "2017.09.08"]
[Round "1"]
[White "Duijker, Bert"]
[Black "Hess, Christian"]
[Result "0-1"]
[ECO "D23"]
[WhiteElo "1868"]
[BlackElo "2238"]
[PlyCount "40"]
[EventDate "2017.09.08"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. Nf3 d5 2. d4 Nf6 3. c4 dxc4 4. g3 Nc6 5. Bg2 e5 6. dxe5 Qxd1+ 7. Kxd1 Ng4 8. Rf1 Bc5 9. e3 Be6 10. a4 0-0-0+ 11. Ke2 Bf5 12. Nc3 Bd3+ 13. Ke1 Bxf1 14. Bxf1 Ncxe5 15. Ng5 Bb4 16. Bd2 h6 17. Nge4 f5 18. Bh3 Rhf8 19. Ke2 Kb8 20. f4 Nd3 0-1

[Event "Sachsen-ch Seniors op"]
[Site "Dresden"]
[Date "2016.11.08"]
[Round "9"]
[White "Bulano, Alexander"]
[Black "Duijker, Bert"]
[Result "0-1"]
[ECO "A48"]
[WhiteElo "1683"]
[BlackElo "1886"]
[PlyCount "38"]
[EventDate "2016.10.31"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. d4 g6 2. Bf4 Bg7 3. Nf3 d6 4. e3 Nf6 5. c4 0-0 6. Qb3 b6 7. Nc3 Bb7 8. Be2 Nh5 9. Rd1 Nxf4 10. exf4 e6 11. c5 Nc6 12. cxd6 cxd6 13. 0-0 Rc8 14. Qa4 Re8 15. Ba6 Bxa6 16. Qxa6 Qd7 17. a3 Na5 18. Ng5 d5 19. Qd3 Nc4 0-1

[Event "Sachsen-ch Seniors op"]
[Site "Dresden"]
[Date "2016.11.07"]
[Round "8"]
[White "Duijker, Bert"]
[Black "Krien, Hartmut"]
[Result "0-1"]
[ECO "A94"]
[WhiteElo "1886"]
[BlackElo "1748"]
[PlyCount "84"]
[EventDate "2016.10.31"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. Nf3 d5 2. d4 e6 3. g3 c6 4. Bg2 f5 5. 0-0 Nf6 6. c4 Be7 7. b3 0-0 8. Ba3 Ne4 9. Bxe7 Qxe7 10. Ne5 Nd7 11. f3 Nxe5 12. dxe5 Qc5+ 13. Kh1 Nf2+ 14. Rxf2 Qxf2 15. f4 h5 16. Nc3 Qc5 17. Na4 Qe7 18. cxd5 exd5 19. Rc1 h4 20. Qd3 Be6 21. Nc5 Rad8 22. gxh4 Bc8 23. Qg3 b6 24. Nd3 Bb7 25. Qg5 Qxg5 26. hxg5 Kf7 27. b4 Ke6 28. h3 Rc8 29. e3 Rc7 30. Kg1 Ba6 31. Nb2 Rfc8 32. a4 Bb7 33. Kf2 a6 34. a5 bxa5 35. bxa5 c5 36. Na4 c4 37. Nb6 Rb8 38. Na4 Ba8 39. Nb6 Rc5 40. Ke2 Rxa5 41. Nxa8 Rxa8 42. Rxc4 Ra2+ 0-1

[Event "Sachsen-ch Seniors op"]
[Site "Dresden"]
[Date "2016.11.06"]
[Round "7"]
[White "Gensch, Manfred"]
[Black "Duijker, Bert"]
[Result "1/2-1/2"]
[ECO "B06"]
[WhiteElo "1786"]
[BlackElo "1886"]
[PlyCount "50"]
[EventDate "2016.10.31"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. e4 d6 2. d4 g6 3. Nc3 Bg7 4. f4 a6 5. Nf3 b5 6. Bd3 Bb7 7. 0-0 Nd7 8. e5 e6 9. a4 b4 10. Ne4 Bxe4 11. Bxe4 d5 12. Bd3 c5 13. Be3 c4 14. Be2 Ne7 15. b3 Qc7 16. Rc1 a5 17. h3 0-0 18. g4 Nb6 19. Rf2 Rac8 20. g5 Qd7 21. h4 cxb3 22. cxb3 Rxc1 23. Bxc1 Rc8 24. Bb2 Rc7 25. h5 h6 1/2-1/2

[Event "Sachsen-ch Seniors op"]
[Site "Dresden"]
[Date "2016.11.05"]
[Round "6"]
[White "Duijker, Bert"]
[Black "Wraga, Hermann"]
[Result "1-0"]
[ECO "A88"]
[WhiteElo "1886"]
[BlackElo "1675"]
[PlyCount "57"]
[EventDate "2016.10.31"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. Nf3 d6 2. d4 f5 3. c4 g6 4. Nc3 Nf6 5. g3 Bg7 6. Bg2 c6 7. 0-0 0-0 8. b3 Qe8 9. Ba3 Na6 10. Rc1 Bd7 11. d5 Nc7 12. e3 Rc8 13. dxc6 bxc6 14. Qd3 Kh8 15. Rfe1 Qd8 16. e4 fxe4 17. Nxe4 Bf5 18. Nh4 Bxe4 19. Bxe4 Nxe4 20. Qxe4 Rf7 21. f4 Ne8 22. Nf3 Qa5 23. Qe6 Qxa3 24. Qxc8 Rf8 25. Qxc6 Nf6 26. Rc2 e5 27. fxe5 dxe5 28. Ng5 Qb4 29. Rf1 1-0

[Event "Sachsen-ch Seniors op"]
[Site "Dresden"]
[Date "2016.11.04"]
[Round "5"]
[White "Hauke, Hans"]
[Black "Duijker, Bert"]
[Result "1/2-1/2"]
[ECO "B06"]
[WhiteElo "1608"]
[BlackElo "1886"]
[PlyCount "47"]
[EventDate "2016.10.31"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nc3 d6 4. Be3 a6 5. Qd2 b5 6. 0-0-0 h5 7. Nf3 Bb7 8. d5 c5 9. Ng5 Qa5 10. Kb1 Nd7 11. f4 Nb6 12. e5 b4 13. Nce4 Bxd5 14. b3 Rd8 15. Qf2 Nh6 16. Bd3 0-0 17. h3 Nf5 18. Bc1 dxe5 19. g4 Bxe4 20. Nxe4 Nd4 21. f5 Nd5 22. gxh5 Nxf5 23. Rhg1 Nf4 24. hxg6 1/2-1/2

[Event "Sachsen-ch Seniors op"]
[Site "Dresden"]
[Date "2016.11.03"]
[Round "4"]
[White "Duijker, Bert"]
[Black "Krilova, Marina"]
[Result "0-1"]
[ECO "A89"]
[WhiteElo "1886"]
[BlackElo "2079"]
[PlyCount "74"]
[EventDate "2016.10.31"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. Nf3 f5 2. d4 Nf6 3. c4 g6 4. g3 Bg7 5. Bg2 0-0 6. 0-0 d6 7. Nc3 Nc6 8. d5 Ne5 9. Nxe5 dxe5 10. c5 e6 11. Bg5 exd5 12. Bxd5+ Kh8 13. Bb3 c6 14. Qxd8 Rxd8 15. Rad1 Rf8 16. f3 h6 17. Bxf6 Bxf6 18. e4 Kg7 19. Bc4 Be7 20. b4 a5 21. a3 axb4 22. axb4 Ra3 23. Rd3 b6 24. cxb6 Bxb4 25. b7 Bxb7 26. Rd7+ Kf6 27. Rxb7 Bc5+ 28. Kg2 Rxc3 29. Bb3 Bd4 30. h4 h5 31. g4 g5 32. hxg5+ Kxg5 33. gxf5 Kf4 34. Be6 Rc2+ 35. Kh3 Bf2 36. Kg2 Bg3+ 37. Kg1 Rd8 0-1

[Event "Sachsen-ch Seniors op"]
[Site "Dresden"]
[Date "2016.11.02"]
[Round "3"]
[White "Kempe, Rainer"]
[Black "Duijker, Bert"]
[Result "1-0"]
[ECO "B20"]
[WhiteElo "1989"]
[BlackElo "1886"]
[PlyCount "59"]
[EventDate "2016.10.31"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. e4 g6 2. g3 c5 3. Bg2 Bg7 4. c3 Nc6 5. Ne2 e6 6. 0-0 Nge7 7. d3 0-0 8. Be3 b6 9. Nd2 d5 10. exd5 exd5 11. c4 dxc4 12. dxc4 Bg4 13. f3 Bf5 14. Nc3 Qd7 15. Nde4 Rad8 16. Qe2 Qd3 17. Rae1 Qxe2 18. Rxe2 Nd4 19. Rd2 Be6 20. b3 h6 21. Rc1 f5 22. Nf2 Rd7 23. f4 Rfd8 24. Bxd4 Rxd4 25. Re2 Kf7 26. Rce1 R4d6 27. Nb5 Bd4 28. Nxd6+ Rxd6 29. Kf1 Nc6 30. Rxe6 1-0

[Event "Sachsen-ch Seniors op"]
[Site "Dresden"]
[Date "2016.11.01"]
[Round "2"]
[White "Duijker, Bert"]
[Black "Hauger, Albrecht"]
[Result "1-0"]
[ECO "E06"]
[WhiteElo "1886"]
[BlackElo "1418"]
[PlyCount "55"]
[EventDate "2016.10.31"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. Nf3 d5 2. d4 e6 3. g3 c5 4. Bg2 Nc6 5. 0-0 Nf6 6. c4 Be7 7. cxd5 Nxd5 8. dxc5 Bxc5 9. e4 Nf6 10. Qxd8+ Nxd8 11. Nc3 Nc6 12. e5 Nd7 13. Ne4 Be7 14. Nd6+ Bxd6 15. exd6 0-0 16. Be3 Rb8 17. Rac1 Nf6 18. Nd4 Nxd4 19. Bxd4 Rd8 20. Bxf6 gxf6 21. Rfd1 Rd7 22. Rc7 Kf8 23. Rdc1 Rd8 24. b3 a6 25. f4 f5 26. Bf3 b5 27. Bh5 Bd7 28. Ra7 1-0

[Event "Sachsen-ch Seniors op"]
[Site "Dresden"]
[Date "2016.10.31"]
[Round "1"]
[White "Meissner, Ulrich"]
[Black "Duijker, Bert"]
[Result "1/2-1/2"]
[ECO "B06"]
[WhiteElo "1245"]
[BlackElo "1886"]
[PlyCount "107"]
[EventDate "2016.10.31"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nf3 d6 4. h3 a6 5. Nc3 b5 6. Bd3 Bb7 7. 0-0 Nd7 8. Ne2 c5 9. c3 Ngf6 10. Ng3 0-0 11. Be3 Rc8 12. Rc1 e6 13. Be2 Qe7 14. Bd3 cxd4 15. Bxd4 Rfd8 16. Re1 Nc5 17. Bc2 h5 18. Qe2 Bh6 19. Rcd1 Nfd7 20. Be3 Bg7 21. Bd4 h4 22. Nf1 Bh6 23. N1h2 e5 24. Be3 Bg7 25. Bg5 Bf6 26. Bc1 Ne6 27. Ng4 Nf4 28. Nxf6+ Qxf6 29. Bxf4 exf4 30. e5 dxe5 31. Nxe5 Nxe5 32. Qxe5 Qxe5 33. Rxe5 f3 34. Rde1 fxg2 35. Be4 Bxe4 36. R5xe4 Rd2 37. R4e2 Rcd8 38. Kxg2 Kg7 39. b3 Rxe2 40. Rxe2 Rd3 41. Rc2 Kf6 42. c4 b4 43. Re2 g5 44. Re3 Rd2 45. Re8 Rxa2 46. c5 Rc2 47. Ra8 Rxc5 48. Rxa6+ Ke5 49. Rb6 f5 50. Rxb4 Rc3 51. Rb8 g4 52. hxg4 h3+ 53. Kg1 fxg4 54. b4 1/2-1/2

[Event "Schleswig Holstein-ch Seniors op 10th"]
[Site "Buesum"]
[Date "2016.10.04"]
[Round "9"]
[White "Lehmann, Erwin"]
[Black "Duijker, Bert"]
[Result "1-0"]
[ECO "A26"]
[WhiteElo "2038"]
[BlackElo "1918"]
[PlyCount "93"]
[EventDate "2016.09.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. c4 d6 2. g3 g6 3. Bg2 Bg7 4. Nc3 Nf6 5. e4 0-0 6. Nge2 e5 7. 0-0 Nc6 8. d3 h6 9. Rb1 a5 10. b3 Ne7 11. Nd5 Nh7 12. Be3 c6 13. Nb6 Ra6 14. Nxc8 Qxc8 15. f4 f5 16. Qd2 h5 17. Nc3 Nf6 18. h3 Nd7 19. d4 Rd8 20. fxe5 dxe5 21. d5 Nf6 22. Bg5 cxd5 23. exd5 e4 24. Rbc1 Nc6 25. Bxf6 Bxf6 26. Nxe4 Bd4+ 27. Nf2 Bg7 28. Rfe1 Nd4 29. Re3 Bf6 30. Ree1 Qc5 31. Qe3 Qf8 32. c5 Raa8 33. d6 Nc6 34. Bd5+ Kg7 35. Kf1 Re8 36. Qd2 Be5 37. Kg2 f4 38. g4 f3+ 39. Bxf3 Bf4 40. Qc3+ Be5 41. Qc4 Bb2 42. Rcd1 Ne5 43. Qd5 Nc6 44. gxh5 Re5 45. Rxe5 Bxe5 46. Ng4 Re8 47. d7 1-0

[Event "Schleswig Holstein-ch Seniors op 10th"]
[Site "Buesum"]
[Date "2016.10.03"]
[Round "8"]
[White "Duijker, Bert"]
[Black "Walther, Reinhard"]
[Result "1/2-1/2"]
[ECO "B32"]
[WhiteElo "1918"]
[BlackElo "2040"]
[PlyCount "97"]
[EventDate "2016.09.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. Nf3 c5 2. c4 Nc6 3. d4 cxd4 4. Nxd4 e5 5. Nb5 d6 6. e4 a6 7. N5c3 Nf6 8. Bg5 Be7 9. Bxf6 Bxf6 10. Nd5 0-0 11. Nbc3 Bg5 12. Bd3 Bd7 13. 0-0 Nd4 14. Kh1 Ne6 15. g3 Bc6 16. f4 exf4 17. gxf4 Bh4 18. Qg4 Nc5 19. Bc2 g6 20. Rad1 Re8 21. f5 Nd7 22. fxg6 hxg6 23. Qf4 Ne5 24. b3 Rc8 25. Nf6+ Bxf6 26. Qxf6 Re6 27. Qf4 Kg7 28. Nd5 Bxd5 29. Rxd5 Qe7 30. a4 Rh8 31. Rd2 Qh4 32. Rdf2 Qxf4 33. Rxf4 Rh3 34. Kg2 Rc3 35. R1f2 Re8 36. Rh4 Rh8 37. Rxh8 Kxh8 38. Bd1 Kg7 39. Rd2 Rd3 40. Rxd3 Nxd3 41. Kf3 Ne5+ 42. Ke3 Nc6 43. Bg4 a5 44. Bc8 b6 45. h3 Kf6 46. Bd7 Nb4 47. Kd4 g5 48. Bg4 Ke7 49. Bf5 1/2-1/2

[Event "Schleswig Holstein-ch Seniors op 10th"]
[Site "Buesum"]
[Date "2016.10.02"]
[Round "7"]
[White "Duijker, Bert"]
[Black "Schwertel, Johann"]
[Result "1/2-1/2"]
[ECO "E01"]
[WhiteElo "1918"]
[BlackElo "1984"]
[PlyCount "49"]
[EventDate "2016.09.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. Nf3 d5 2. d4 Nf6 3. c4 c6 4. Qc2 e6 5. Nbd2 Nbd7 6. g3 Bd6 7. Bg2 0-0 8. 0-0 b6 9. e4 Nxe4 10. Nxe4 dxe4 11. Qxe4 Bb7 12. Qe2 Re8 13. Rd1 Nf8 14. b3 Ng6 15. Bb2 Be7 16. Ne5 Nxe5 17. dxe5 Qc7 18. Rd3 Red8 19. Rad1 c5 20. f4 g6 21. Be4 Bxe4 22. Qxe4 Rxd3 23. Rxd3 Rd8 24. h4 h5 25. Kf2 1/2-1/2

[Event "Schleswig Holstein-ch Seniors op 10th"]
[Site "Buesum"]
[Date "2016.10.01"]
[Round "6"]
[White "Rychlik, Kurt"]
[Black "Duijker, Bert"]
[Result "1/2-1/2"]
[ECO "A08"]
[WhiteElo "2032"]
[BlackElo "1918"]
[PlyCount "69"]
[EventDate "2016.09.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. Nf3 g6 2. e4 c5 3. g3 Bg7 4. Bg2 Nf6 5. d3 0-0 6. 0-0 d5 7. Nbd2 Nc6 8. Re1 dxe4 9. dxe4 Bg4 10. h3 Bxf3 11. Qxf3 Nd4 12. Qd1 e5 13. c3 Nc6 14. Qe2 Qc7 15. a4 b6 16. Nc4 h6 17. Ne3 Rad8 18. Nd5 Nxd5 19. exd5 Na5 20. Be3 f5 21. f4 e4 22. c4 Nb3 23. Ra3 Nd4 24. Qd1 a5 25. Ra2 h5 26. Kh1 Qe7 27. b3 Rd6 28. Bf2 Rdd8 29. Rd2 Rfe8 30. Be3 Bf6 31. Kh2 Kg7 32. Bh1 Qd6 33. Rf2 Rh8 34. Bg2 Rde8 35. Rff1 1/2-1/2

[Event "Schleswig Holstein-ch Seniors op 10th"]
[Site "Buesum"]
[Date "2016.09.30"]
[Round "5"]
[White "Duijker, Bert"]
[Black "Zunker, Reinhard"]
[Result "0-1"]
[ECO "D74"]
[WhiteElo "1918"]
[BlackElo "2110"]
[PlyCount "30"]
[EventDate "2016.09.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 g6 3. d4 Bg7 4. g3 d5 5. cxd5 Nxd5 6. Bg2 0-0 7. 0-0 c6 8. e4 Nb6 9. Nc3 Bg4 10. h3 Bxf3 11. Bxf3 Qxd4 12. Be3 Qxd1 13. Raxd1 Nc4 14. Bc1 Na6 15. Rd7 Ne5 0-1

[Event "Schleswig Holstein-ch Seniors op 10th"]
[Site "Buesum"]
[Date "2016.09.29"]
[Round "4"]
[White "Heinzel, Peter"]
[Black "Duijker, Bert"]
[Result "0-1"]
[ECO "A00"]
[WhiteElo "2050"]
[BlackElo "1918"]
[PlyCount "50"]
[EventDate "2016.09.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. b4 b6 2. c4 Bb7 3. Bb2 e6 4. a3 Nf6 5. e3 d5 6. Nf3 Be7 7. d4 0-0 8. Nbd2 c5 9. bxc5 bxc5 10. Be2 Nbd7 11. 0-0 dxc4 12. Nxc4 Qc7 13. Nfd2 Rfd8 14. Rc1 Rac8 15. Bf3 Bxf3 16. Nxf3 Qb7 17. Qa4 a6 18. Bc3 cxd4 19. Bxd4 Qb5 20. Qxb5 axb5 21. Nce5 Nxe5 22. Nxe5 Bxa3 23. Rb1 b4 24. f3 Nd5 25. Nd3 Nxe3 0-1

[Event "Schleswig Holstein-ch Seniors op 10th"]
[Site "Buesum"]
[Date "2016.09.28"]
[Round "3"]
[White "Duijker, Bert"]
[Black "Kahn, Peter"]
[Result "1/2-1/2"]
[ECO "E01"]
[WhiteElo "1918"]
[BlackElo "2069"]
[PlyCount "53"]
[EventDate "2016.09.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. Nf3 d5 2. d4 Nf6 3. c4 c6 4. Qc2 e6 5. g3 Bd6 6. Nbd2 Nbd7 7. Bg2 0-0 8. 0-0 Re8 9. e4 dxe4 10. Nxe4 Nxe4 11. Qxe4 Nf6 12. Qc2 h6 13. b3 Qe7 14. Bb2 Bd7 15. Rad1 Rac8 16. Rfe1 b5 17. Ne5 Qd8 18. Re2 Qc7 19. Rc1 Red8 20. cxb5 cxb5 21. Qxc7 Rxc7 22. Rxc7 Bxc7 23. Nxd7 Rxd7 24. Bc6 Rd8 25. Bxb5 Bb6 26. Bc6 Bxd4 27. Bxd4 1/2-1/2

[Event "Schleswig Holstein-ch Seniors op 10th"]
[Site "Buesum"]
[Date "2016.09.27"]
[Round "2"]
[White "Freerksen, Uwe"]
[Black "Duijker, Bert"]
[Result "0-1"]
[ECO "B06"]
[WhiteElo "1508"]
[BlackElo "1918"]
[PlyCount "94"]
[EventDate "2016.09.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. e4 d6 2. Nf3 g6 3. Nc3 Bg7 4. d3 c5 5. Bd2 Nc6 6. Rb1 Nf6 7. h3 0-0 8. Qc1 Nd4 9. Nxd4 cxd4 10. Ne2 e5 11. Ng3 d5 12. Be2 Be6 13. b3 Rc8 14. 0-0 Qc7 15. Bd1 dxe4 16. Nxe4 Nd5 17. Bh6 f6 18. Bxg7 Kxg7 19. Qd2 h6 20. Rc1 f5 21. Ng3 Nc3 22. a4 Bd5 23. Ne2 Qc6 24. f3 Qf6 25. Nxc3 Rxc3 26. f4 e4 27. Be2 e3 28. Qe1 Rfc8 29. Bd1 Bxb3 30. Rb1 Bxa4 31. Rxb7+ R3c7 32. Qb4 Bc6 33. Rxc7+ Rxc7 34. Bf3 Bxf3 35. gxf3 Rxc2 36. Qb7+ Qf7 37. Rb1 Rc7 38. Qb2 Rd7 39. Ra1 Qd5 40. Kg2 Qd6 41. Qb5 Rc7 42. Qe5+ Qxe5 43. fxe5 f4 44. Ra6 Re7 45. h4 Rxe5 46. Rxa7+ Kf6 47. Rd7 e2 0-1

[Event "Schleswig Holstein-ch Seniors op 10th"]
[Site "Buesum"]
[Date "2016.09.26"]
[Round "1"]
[White "Duijker, Bert"]
[Black "Engel, Peter"]
[Result "1/2-1/2"]
[ECO "E62"]
[WhiteElo "1918"]
[BlackElo "1466"]
[PlyCount "60"]
[EventDate "2016.09.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 g6 3. d4 Bg7 4. g3 0-0 5. Bg2 c6 6. 0-0 d6 7. Nc3 Bg4 8. h3 Bd7 9. e4 b5 10. cxb5 cxb5 11. e5 Ne8 12. Ng5 Bc6 13. d5 Bb7 14. e6 f6 15. Nf7 Qa5 16. a3 b4 17. Ne2 Nc7 18. Bd2 Nba6 19. axb4 Qb5 20. Ra5 Qb6 21. Qa4 Rac8 22. Rc1 f5 23. Bc3 Nb8 24. Qa3 Nb5 25. Rxb5 Qxb5 26. Bxg7 Qxe2 27. Rxc8 Rxc8 28. Bc3 Qd1+ 29. Kh2 Bxd5 30. Bxd5 Qxd5 1/2-1/2

[Event "Rheinland Pfalz op Seniors 14th"]
[Site "Neustadt an der Weinstrasse"]
[Date "2016.07.24"]
[Round "9"]
[White "Duijker, Bert"]
[Black "Kuehner, Peter"]
[Result "1/2-1/2"]
[ECO "D07"]
[WhiteElo "1918"]
[BlackElo "1947"]
[PlyCount "9"]
[EventDate "2016.07.16"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. Nf3 Nc6 2. d4 d5 3. c4 Nf6 4. cxd5 Nxd5 5. e4 1/2-1/2

[Event "Rheinland Pfalz op Seniors 14th"]
[Site "Neustadt an der Weinstrasse"]
[Date "2016.07.23"]
[Round "8"]
[White "Schowalter, Gerd"]
[Black "Duijker, Bert"]
[Result "1/2-1/2"]
[ECO "A48"]
[WhiteElo "1948"]
[BlackElo "1918"]
[PlyCount "161"]
[EventDate "2016.07.16"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. d4 g6 2. Nf3 Bg7 3. Bf4 d6 4. e3 Nf6 5. h3 0-0 6. Nbd2 b6 7. c3 Bb7 8. Be2 Nbd7 9. 0-0 Ne4 10. Nxe4 Bxe4 11. Ng5 Bb7 12. Qc2 e5 13. Nxh7 Kxh7 14. Bg3 c5 15. Rad1 cxd4 16. exd4 Qf6 17. Qa4 Rfd8 18. Bb5 Nf8 19. dxe5 dxe5 20. Bh4 g5 21. Bg3 Ne6 22. Rde1 Nf4 23. Kh2 Qf5 24. Bxf4 Qxf4+ 25. Qxf4 gxf4 26. Rd1 f5 27. Bd7 Bc8 28. Bc6 Be6 29. Bxa8 Rxd1 30. Rxd1 Bxa2 31. f3 Bb3 32. Rd7 a5 33. g4 fxg3+ 34. Kxg3 b5 35. Bd5 Bc2 36. Bc6 b4 37. Ra7 bxc3 38. bxc3 Kg6 39. Be8+ Kh6 40. Ra6+ Kh7 41. Bg6+ Kg8 42. Ra8+ Bf8 43. Kf2 Kg7 44. Be8 e4 45. Ra7+ Kh8 46. Rxa5 exf3 47. Bg6 Be7 48. Bxf5 Bd1 49. Ra8+ Kg7 50. Ra7 Kf6 51. Rxe7 Kxe7 52. Be4 Kf6 53. Bxf3 Bb3 54. Ke3 Kg5 55. Bg4 Kf6 56. Kd4 Bf7 57. Bf3 Kg5 58. Bd5 Be8 59. c4 Bd7 60. Bg2 Kh4 61. Ke5 Kg3 62. Kd6 Bc8 63. Bd5 Bxh3 64. c5 Kf4 65. c6 Bc8 66. Be6 Ba6 67. c7 Bb7 68. Bd5 Bc8 69. Ke7 Ke5 70. Kd8 Ba6 71. Bc4 Bb7 72. Bb5 Kd6 73. Bd7 Ba6 74. Bc8 Bb5 75. Bb7 Bd7 76. Ba6 Be6 77. Bc8 Bd5 78. Bg4 Bb7 79. Be2 Ke6 80. Bg4+ Kd6 81. Bc8 1/2-1/2

[Event "Rheinland Pfalz op Seniors 14th"]
[Site "Neustadt an der Weinstrasse"]
[Date "2016.07.22"]
[Round "7"]
[White "Duijker, Bert"]
[Black "Blosze, Winfried"]
[Result "1/2-1/2"]
[ECO "A39"]
[WhiteElo "1918"]
[BlackElo "1872"]
[PlyCount "106"]
[EventDate "2016.07.16"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 0-0 5. d4 c5 6. 0-0 cxd4 7. Nxd4 Nc6 8. Nc3 Qb6 9. Nb3 d6 10. Nd5 Nxd5 11. cxd5 Ne5 12. Be3 Qb5 13. Bd4 Bg4 14. f3 Bd7 15. e4 a5 16. Rf2 a4 17. Bf1 Qb4 18. Bc3 Qb6 19. Bd4 Qd8 20. Nd2 b5 21. b3 Qa5 22. bxa4 Qxa4 23. Nb3 Rfc8 24. Kg2 Nc4 25. Bxc4 bxc4 26. Bxg7 Kxg7 27. Qd4+ f6 28. Nc1 Qa3 29. Qb2 Qc5 30. Qc2 Ra3 31. Qb2 Rca8 32. Qb7 R8a7 33. Qb2 Rc7 34. g4 c3 35. Qb8 Rc8 36. Qb7 Ra7 37. Qb3 Ba4 38. Qb1 Rcc7 39. Nb3 c2 40. Nxc5 cxb1Q 41. Ne6+ Kf7 42. Rxb1 Rc2 43. Rxc2 Bxc2 44. Rb2 Bd3 45. Nd4 Bc4 46. Nb3 e6 47. dxe6+ Bxe6 48. Kf2 h5 49. h3 h4 50. Ke3 Bc4 51. Kf2 g5 52. Rd2 Ke7 53. Ke3 Be6 1/2-1/2

[Event "Rheinland Pfalz op Seniors 14th"]
[Site "Neustadt an der Weinstrasse"]
[Date "2016.07.21"]
[Round "6"]
[White "Schroeder, Klaus"]
[Black "Duijker, Bert"]
[Result "1/2-1/2"]
[ECO "A42"]
[WhiteElo "1868"]
[BlackElo "1918"]
[PlyCount "31"]
[EventDate "2016.07.16"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. d4 d6 2. c4 g6 3. Nc3 Bg7 4. e4 Nc6 5. Be3 e5 6. d5 Nce7 7. Bd3 f5 8. exf5 Nxf5 9. Nf3 Nf6 10. h3 0-0 11. Qd2 Re8 12. Ne4 Nxe4 13. Bxe4 Nd4 14. 0-0-0 Nf5 15. Bg5 Qd7 16. g4 1/2-1/2

[Event "Rheinland Pfalz op Seniors 14th"]
[Site "Neustadt an der Weinstrasse"]
[Date "2016.07.20"]
[Round "5"]
[White "Mayeres, Hans Christian"]
[Black "Duijker, Bert"]
[Result "1/2-1/2"]
[ECO "A21"]
[WhiteElo "1851"]
[BlackElo "1918"]
[PlyCount "58"]
[EventDate "2016.07.16"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. c4 d6 2. Nc3 g6 3. g3 Bg7 4. Bg2 e5 5. d3 Ne7 6. e4 0-0 7. Be3 Nbc6 8. f4 Nd4 9. Nf3 Bg4 10. h3 Bxf3 11. Bxf3 Nec6 12. Bg2 exf4 13. Bxf4 Ne6 14. 0-0 Ncd4 15. Rb1 c6 16. Ne2 a5 17. Qd2 Qd7 18. b4 axb4 19. Rxb4 Nxe2+ 20. Qxe2 Bc3 21. Rbb1 Ra3 22. Bc1 Ra6 23. Qc2 Nd4 24. Qf2 Ne6 25. Qc2 Bd4+ 26. Kh1 Rfa8 27. a3 Be5 28. Kh2 Nd4 29. Qd1 Rf8 1/2-1/2

[Event "Rheinland Pfalz op Seniors 14th"]
[Site "Neustadt an der Weinstrasse"]
[Date "2016.07.19"]
[Round "4"]
[White "Duijker, Bert"]
[Black "Fecht, Hans Peter"]
[Result "0-1"]
[ECO "D23"]
[WhiteElo "1918"]
[BlackElo "2188"]
[PlyCount "68"]
[EventDate "2016.07.16"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. Nf3 d5 2. d4 Nf6 3. c4 c6 4. Qc2 dxc4 5. Qxc4 b5 6. Qc2 Bb7 7. e4 e6 8. a3 a5 9. Bd3 Nbd7 10. 0-0 Be7 11. h3 h6 12. Be3 0-0 13. Nc3 b4 14. Na4 Ba6 15. Bxa6 Rxa6 16. Nc5 Nxc5 17. dxc5 Qb8 18. Qc4 Ra8 19. axb4 Qxb4 20. Qxb4 axb4 21. Nd2 Nd7 22. Nb3 Bf6 23. Bd4 Bxd4 24. Nxd4 Nxc5 25. Nxc6 Nxe4 26. Nxb4 Rab8 27. Nd3 Rfd8 28. Rfd1 Rb3 29. Ra3 Rxa3 30. bxa3 Nc3 31. Rd2 e5 32. f3 f5 33. Kf2 e4 34. fxe4 Nxe4+ 0-1

[Event "Rheinland Pfalz op Seniors 14th"]
[Site "Neustadt an der Weinstrasse"]
[Date "2016.07.18"]
[Round "3"]
[White "Duijker, Bert"]
[Black "Reinke, Kurt"]
[Result "1-0"]
[ECO "A53"]
[WhiteElo "1918"]
[BlackElo "1808"]
[PlyCount "77"]
[EventDate "2016.07.16"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. Nf3 d6 2. d4 Bg4 3. Nbd2 Nf6 4. c4 g6 5. h3 Bd7 6. e4 Nc6 7. e5 dxe5 8. dxe5 Ng8 9. b3 e6 10. Bb2 a5 11. a3 Bg7 12. Ne4 Nh6 13. Qd2 Nf5 14. Rd1 Nb8 15. g4 Ne7 16. Bg2 Na6 17. Nf6+ Bxf6 18. exf6 Ng8 19. Ne5 Nc5 20. b4 axb4 21. Qxb4 Na6 22. Qc3 Nc5 23. Qd4 Nb3 24. Qxd7+ Qxd7 25. Rxd7 Nxf6 26. Rxc7 0-0 27. 0-0 Nd2 28. Rc1 Nfe4 29. Bxe4 Nxe4 30. Rxb7 Rab8 31. Rb4 Rbd8 32. Rc2 Rd1+ 33. Kh2 f5 34. c5 Rfd8 35. Nf3 h5 36. gxh5 gxh5 37. Rd4 R8xd4 38. Bxd4 f4 39. c6 1-0

[Event "Rheinland Pfalz op Seniors 14th"]
[Site "Neustadt an der Weinstrasse"]
[Date "2016.07.17"]
[Round "2"]
[White "Hottes, Dieter"]
[Black "Duijker, Bert"]
[Result "1-0"]
[ECO "E69"]
[WhiteElo "2126"]
[BlackElo "1918"]
[PlyCount "73"]
[EventDate "2016.07.16"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. c4 g6 2. g3 Bg7 3. Bg2 d6 4. Nc3 c6 5. e4 Nf6 6. Nf3 0-0 7. d4 Nbd7 8. 0-0 e5 9. h3 Re8 10. Be3 exd4 11. Nxd4 Nc5 12. Qc2 a5 13. Rad1 Qc7 14. Rfe1 Bd7 15. b3 Rad8 16. Bg5 h6 17. Be3 Bc8 18. f3 Nfd7 19. g4 Nf8 20. Qf2 Nfd7 21. Qh4 g5 22. Qf2 Ne5 23. Rf1 Ncd3 24. Qd2 Qe7 25. Nce2 Nc5 26. Ng3 Ng6 27. Ndf5 Bxf5 28. Nxf5 Qe6 29. Qxa5 Ra8 30. Qd2 Bf8 31. Qf2 Nd7 32. Rd2 Nde5 33. Rfd1 Red8 34. f4 gxf4 35. Bxf4 Nxf4 36. Qxf4 Ng6 37. Nxh6+ 1-0

[Event "Rheinland Pfalz op Seniors 14th"]
[Site "Neustadt an der Weinstrasse"]
[Date "2016.07.16"]
[Round "1"]
[White "Duijker, Bert"]
[Black "Van Houten, Henk"]
[Result "1-0"]
[ECO "A40"]
[WhiteElo "1918"]
[BlackElo "1672"]
[PlyCount "39"]
[EventDate "2016.07.16"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. Nf3 b6 2. d4 Bb7 3. c4 Bxf3 4. exf3 d5 5. Nc3 e6 6. a3 Nf6 7. Bg5 Be7 8. Bd3 h6 9. Be3 c6 10. 0-0 Bd6 11. Rc1 Qc7 12. g3 dxc4 13. Bxc4 Qb7 14. Re1 0-0 15. Ne4 Be7 16. Qb3 Nxe4 17. fxe4 b5 18. d5 Qa6 19. Bf1 e5 20. dxc6 1-0

[Event "Hessen-ch Seniors op 12th"]
[Site "Bad Sooden-Allendorf"]
[Date "2016.05.08"]
[Round "9"]
[White "Duijker, Bert"]
[Black "Voeller, Lothar"]
[Result "1-0"]
[ECO "A92"]
[WhiteElo "1889"]
[BlackElo "1758"]
[PlyCount "81"]
[EventDate "2016.04.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. Nf3 f5 2. d4 Nf6 3. c4 e6 4. g3 Be7 5. Bg2 0-0 6. 0-0 c6 7. b3 Qe8 8. Ba3 d6 9. Nc3 Nbd7 10. Rc1 Ne4 11. d5 cxd5 12. cxd5 e5 13. Nb5 Qg6 14. Nc7 Rb8 15. Qc2 Nb6 16. Nxe5 dxe5 17. Bxe7 Rf7 18. Ba3 h5 19. Bb2 Nd7 20. Ne6 h4 21. Qc7 hxg3 22. fxg3 Qh6 23. Bxe4 Qe3+ 24. Rf2 Qxe4 25. Ng5 Qxd5 26. Nxf7 Qxf7 27. Bxe5 Ra8 28. Qd8+ Qf8 29. Qxf8+ Nxf8 30. Rf3 Ng6 31. Bd4 f4 32. gxf4 Nh4 33. Rfc3 Bg4 34. Kf2 Bf5 35. Rc7 g6 36. Rg7+ Kf8 37. Rh7 Re8 38. Rxh4 Re4 39. Rc7 Be6 40. Rh8+ Bg8 41. Bc5+ 1-0

[Event "Hessen-ch Seniors op 12th"]
[Site "Bad Sooden-Allendorf"]
[Date "2016.05.08"]
[Round "8"]
[White "Kurpiela, Franz"]
[Black "Duijker, Bert"]
[Result "1/2-1/2"]
[ECO "B08"]
[WhiteElo "1766"]
[BlackElo "1889"]
[PlyCount "51"]
[EventDate "2016.04.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. e4 d6 2. d4 g6 3. Bc4 Bg7 4. Nf3 Nf6 5. Nc3 0-0 6. 0-0 Nxe4 7. Bxf7+ Rxf7 8. Nxe4 h6 9. h3 Qf8 10. Nh4 Bf5 11. Nxf5 gxf5 12. Nc3 c6 13. Ne2 e5 14. c3 Nd7 15. Qb3 Nb6 16. a4 Kh8 17. a5 Nd5 18. c4 Nf6 19. dxe5 dxe5 20. Ng3 f4 21. Nf5 Ne4 22. Nh4 Qd6 23. Qc2 Ng5 24. b3 e4 25. Bb2 Raf8 26. Rad1 1/2-1/2

[Event "Hessen-ch Seniors op 12th"]
[Site "Bad Sooden-Allendorf"]
[Date "2016.05.06"]
[Round "7"]
[White "Rychlik, Kurt"]
[Black "Duijker, Bert"]
[Result "1-0"]
[ECO "B07"]
[WhiteElo "2056"]
[BlackElo "1889"]
[PlyCount "111"]
[EventDate "2016.04.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. Nf3 d6 2. d4 g6 3. e4 Bg7 4. Bd3 c5 5. c3 Nf6 6. h3 0-0 7. 0-0 Nc6 8. d5 Nb8 9. Nbd2 Nbd7 10. a4 Nh5 11. Nc4 Ne5 12. Nfxe5 dxe5 13. Be3 Qc7 14. Qd2 Nf4 15. Rfe1 g5 16. Bf1 h6 17. Kh2 b6 18. g3 Nh5 19. Be2 Nf6 20. f3 Ne8 21. Rg1 Ba6 22. b3 Nd6 23. h4 f6 24. Bd3 Bxc4 25. bxc4 Qd7 26. g4 Nf7 27. Kg3 gxh4+ 28. Kxh4 Ng5 29. Kg3 Kf7 30. a5 Rfc8 31. Ra3 b5 32. cxb5 c4 33. Bc2 Qxb5 34. a6 Qb2 35. Rga1 e6 36. R3a2 Qb5 37. Ba4 Qb8 38. dxe6+ Kg6 39. Rb2 Qc7 40. Rb7 Qd8 41. Rd7 Qg8 42. Bxg5 fxg5 43. e7 Qf7 44. Rb1 Qf4+ 45. Qxf4 exf4+ 46. Kg2 Bxc3 47. Rd6+ Bf6 48. e5 c3 49. Rxf6+ Kg7 50. Bc2 Rab8 51. Rb7 Re8 52. Rc6 Kf7 53. Bb3+ Kg7 54. Rxc3 Kh8 55. Ba4 Rxe7 56. Rxe7 1-0

[Event "Hessen-ch Seniors op 12th"]
[Site "Bad Sooden-Allendorf"]
[Date "2016.05.05"]
[Round "6"]
[White "Duijker, Bert"]
[Black "Krebs, Dietmar"]
[Result "1/2-1/2"]
[ECO "E68"]
[WhiteElo "1889"]
[BlackElo "2004"]
[PlyCount "55"]
[EventDate "2016.04.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 g6 3. d4 Bg7 4. g3 0-0 5. Bg2 d6 6. 0-0 Nbd7 7. Nc3 e5 8. e4 c6 9. b3 Re8 10. Bb2 exd4 11. Nxd4 Nc5 12. f3 Ne6 13. Nce2 Qb6 14. Kh1 Rd8 15. Qc2 d5 16. e5 Ne8 17. cxd5 Rxd5 18. Nxe6 Bxe6 19. Nf4 Rd7 20. Nxe6 fxe6 21. Rad1 Rad8 22. Rxd7 Rxd7 23. Rd1 Qd8 24. Rxd7 Qxd7 25. f4 Bf8 26. Be4 Ng7 27. Qd3 Qxd3 28. Bxd3 1/2-1/2

[Event "Hessen-ch Seniors op 12th"]
[Site "Bad Sooden-Allendorf"]
[Date "2016.05.04"]
[Round "5"]
[White "Romanow, Werner"]
[Black "Duijker, Bert"]
[Result "1-0"]
[ECO "A42"]
[WhiteElo "2130"]
[BlackElo "1889"]
[PlyCount "120"]
[EventDate "2016.04.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. c4 d6 2. Nf3 g6 3. Nc3 Bg7 4. d4 Nd7 5. e4 e5 6. Bg5 Ne7 7. dxe5 Nxe5 8. Nxe5 Bxe5 9. Nd5 f6 10. Bxf6 Bxf6 11. Nxf6+ Kf7 12. Qf3 Kg7 13. Qc3 Kf7 14. Be2 Nc6 15. Nd5 Re8 16. f3 Ne5 17. 0-0 c6 18. Ne3 Kg8 19. Rad1 Qe7 20. Rd2 Nf7 21. Rfd1 Be6 22. Nc2 Rad8 23. Nd4 Bc8 24. Bf1 a6 25. Ne2 g5 26. h3 h5 27. Ng3 h4 28. Nh5 Ne5 29. g4 hxg3 30. Nxg3 Rf8 31. Bg2 Ng6 32. c5 dxc5 33. Rxd8 Rxd8 34. Rxd8+ Qxd8 35. Qxc5 Nf4 36. Qe5 Ng6 37. Qc3 Nf4 38. Bf1 Be6 39. Bc4 Nxh3+ 40. Kh2 Nf4 41. Nh5 Qe7 42. Qe5 Kf7 43. Qg7+ Ke8 44. Nf6+ Kd8 45. Qxg5 Bxc4 46. Qxf4 Kc8 47. b3 Bf7 48. Kg3 a5 49. Qf5+ Be6 50. Qe5 Qg7+ 51. Kf2 Bh3 52. Ng4 Qh7 53. Qf5+ Qxf5 54. exf5 Kd8 55. Ke3 Ke7 56. Ke4 Bg2 57. Ne3 Bh3 58. Ke5 b5 59. a4 bxa4 60. bxa4 Kf7 1-0

[Event "Hessen-ch Seniors op 12th"]
[Site "Bad Sooden-Allendorf"]
[Date "2016.05.03"]
[Round "4"]
[White "Duijker, Bert"]
[Black "Kotlar, Alfred"]
[Result "1/2-1/2"]
[ECO "D70"]
[WhiteElo "1889"]
[BlackElo "2052"]
[PlyCount "51"]
[EventDate "2016.04.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 g6 3. d4 d5 4. cxd5 Qxd5 5. Nc3 Qa5 6. Bd2 c6 7. Ne4 Qb6 8. Nxf6+ exf6 9. Bc3 Bg7 10. e3 0-0 11. Be2 Na6 12. a4 Nb8 13. a5 Qd8 14. 0-0 Re8 15. Qb3 Qc7 16. h3 Nd7 17. Rfc1 f5 18. Bc4 Nf8 19. d5 Bxc3 20. Rxc3 cxd5 21. Bxd5 Qe7 22. Rac1 Ne6 23. Qc2 Qd8 24. Bxe6 Bxe6 25. Rc7 Qd5 26. Qc5 1/2-1/2

[Event "Hessen-ch Seniors op 12th"]
[Site "Bad Sooden-Allendorf"]
[Date "2016.05.02"]
[Round "3"]
[White "Bomert, Egon"]
[Black "Duijker, Bert"]
[Result "0-1"]
[ECO "A42"]
[WhiteElo "2089"]
[BlackElo "1889"]
[PlyCount "86"]
[EventDate "2016.04.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. d4 g6 2. c4 Bg7 3. Nc3 d6 4. e4 e5 5. Nge2 exd4 6. Nxd4 Ne7 7. Be2 0-0 8. 0-0 Nbc6 9. Be3 f5 10. g3 fxe4 11. Nxe4 Nf5 12. Bg5 Qe8 13. Nxc6 bxc6 14. Nc3 Rb8 15. Qd2 Qf7 16. Be3 c5 17. Nd1 Nd4 18. f4 Re8 19. Kf2 Bh3 20. Re1 Bf5 21. Bd3 Be6 22. Rc1 g5 23. Kg2 g4 24. Bxd4 Bxd4 25. f5 Bd7 26. Qg5+ Qg7 27. Qxg7+ Kxg7 28. Rxe8 Rxe8 29. Nf2 Bc6+ 30. Kf1 h5 31. b3 Kf6 32. Rc2 a5 33. Re2 Rxe2 34. Kxe2 Bxf2 35. Kxf2 Bd7 36. Ke3 Bxf5 37. Be4 Ke5 38. Bxf5 Kxf5 39. Kd3 c6 40. a3 Ke5 41. Ke3 d5 42. cxd5 cxd5 43. Kd3 d4 0-1

[Event "Hessen-ch Seniors op 12th"]
[Site "Bad Sooden-Allendorf"]
[Date "2016.05.01"]
[Round "2"]
[White "Duijker, Bert"]
[Black "Narr, Irmgard"]
[Result "1-0"]
[ECO "E16"]
[WhiteElo "1889"]
[BlackElo "1730"]
[PlyCount "133"]
[EventDate "2016.04.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 e6 3. d4 b6 4. g3 Bb7 5. Bg2 Bb4+ 6. Bd2 Bxd2+ 7. Nbxd2 0-0 8. 0-0 d6 9. Rc1 c5 10. e3 Qc7 11. a3 Nbd7 12. Qc2 Rfe8 13. Rfd1 Nf8 14. e4 Ng6 15. b3 e5 16. d5 Bc8 17. Nf1 Bd7 18. Ne3 Qc8 19. Ne1 a6 20. a4 Bh3 21. f3 Bxg2 22. N1xg2 Qh3 23. Nf5 Red8 24. Nge3 a5 25. Rd2 Ra7 26. Rf1 Ne7 27. g4 g6 28. Nxe7+ Rxe7 29. Rg2 Ne8 30. Rg3 Qh6 31. g5 Qf8 32. Qg2 Ng7 33. Ng4 Nh5 34. Nf6+ Kg7 35. Nxh5+ gxh5 36. Qh3 Kh8 37. Qxh5 Qg7 38. Kf2 Rg8 39. Rfg1 Qf8 40. Qh6 Qxh6 41. gxh6 Rg6 42. h4 Re8 43. h5 Rxh6 44. Rg7 Rf8 45. R7g5 f6 46. Rf5 Rf7 47. Ke3 Rg7 48. Rxg7 Kxg7 49. f4 Kg8 50. Kf3 Kg7 51. Kg4 Kg8 52. fxe5 dxe5 53. Rf3 Kf7 54. Rd3 Ke7 55. d6+ Kd7 56. Rd5 f5+ 57. exf5 Rxd6 58. Rxd6+ Kxd6 59. Kf3 Ke7 60. Ke4 Kf6 61. h6 Kg5 62. Kxe5 Kxh6 63. f6 Kg6 64. Ke6 h5 65. f7 Kg7 66. Ke7 h4 67. f8Q+ 1-0

[Event "Schleswig Holstein-ch Seniors op 9th"]
[Site "Buesum"]
[Date "2015.10.07"]
[Round "9"]
[White "Duijker, Bert"]
[Black "Kluger, Hans Peter"]
[Result "1-0"]
[ECO "D11"]
[WhiteElo "1907"]
[BlackElo "2015"]
[PlyCount "71"]
[EventDate "2015.09.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. Nf3 d5 2. d4 Nf6 3. c4 c6 4. Qc2 Nbd7 5. Nbd2 g6 6. e4 dxe4 7. Nxe4 Nxe4 8. Qxe4 Nf6 9. Qc2 Bg7 10. h3 0-0 11. Bd3 Bd7 12. 0-0 Qc7 13. Be3 Rfe8 14. Rac1 Rac8 15. Rfd1 b6 16. b3 Nh5 17. Qd2 f5 18. Bh6 Bxh6 19. Qxh6 e6 20. Qd2 Re7 21. a4 c5 22. d5 exd5 23. cxd5 Qd6 24. Bc4 Nf6 25. Ng5 Ne4 26. Nxe4 Rxe4 27. Re1 Rce8 28. Rxe4 Rxe4 29. Re1 Qe5 30. Rxe4 Qxe4 31. Qc3 h5 32. Qf6 Be8 33. d6+ Kh7 34. Bf7 Bxf7 35. Qxf7+ Kh6 36. Qf8+ 1-0

[Event "Schleswig Holstein-ch Seniors op 9th"]
[Site "Buesum"]
[Date "2015.10.06"]
[Round "8"]
[White "Schnaitmann, Herbert"]
[Black "Duijker, Bert"]
[Result "1/2-1/2"]
[ECO "A00"]
[WhiteElo "1995"]
[BlackElo "1907"]
[PlyCount "53"]
[EventDate "2015.09.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. Nc3 g6 2. g3 Bg7 3. Bg2 d6 4. d3 e5 5. f4 Ne7 6. Nf3 0-0 7. 0-0 c6 8. fxe5 dxe5 9. Kh1 Na6 10. Bg5 h6 11. Bd2 Nc7 12. Rb1 a5 13. a4 Ned5 14. e4 Nb4 15. Ne2 Ne6 16. Ne1 b6 17. Be3 c5 18. c3 Nc6 19. Qc2 Ba6 20. Rd1 Qc7 21. Rf2 Rad8 22. Nc1 Rd7 23. b3 Rfd8 24. Rfd2 Rd6 25. Nf3 Qe7 26. Bf1 Qe8 27. Rf2 1/2-1/2

[Event "Schleswig Holstein-ch Seniors op 9th"]
[Site "Buesum"]
[Date "2015.10.05"]
[Round "7"]
[White "Duijker, Bert"]
[Black "Schencke, Guenther"]
[Result "1-0"]
[ECO "D11"]
[WhiteElo "1907"]
[BlackElo "1788"]
[PlyCount "61"]
[EventDate "2015.09.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. Nf3 d5 2. g3 Nf6 3. Bg2 c6 4. d4 Bf5 5. 0-0 e6 6. Nbd2 h6 7. c4 Nbd7 8. b3 Be7 9. Bb2 0-0 10. Ne5 Nxe5 11. dxe5 Nd7 12. e4 dxe4 13. Nxe4 Bxe4 14. Bxe4 Qc7 15. Qe2 Rad8 16. Rad1 g6 17. Bb1 Nb6 18. h4 Rxd1 19. Rxd1 Rd8 20. h5 Rxd1+ 21. Qxd1 Qd7 22. Qxd7 Nxd7 23. hxg6 fxg6 24. Bxg6 Kg7 25. Bc2 Bd8 26. Kg2 Nf8 27. f4 Ng6 28. Kf3 Bc7 29. Ba3 Kf7 30. Kg4 Bd8 31. Kh5 1-0

[Event "Schleswig Holstein-ch Seniors op 9th"]
[Site "Buesum"]
[Date "2015.10.04"]
[Round "6"]
[White "Hoelzel, Gerhard"]
[Black "Duijker, Bert"]
[Result "0-1"]
[ECO "A02"]
[WhiteElo "1718"]
[BlackElo "1907"]
[PlyCount "116"]
[EventDate "2015.09.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. f4 g6 2. e3 d6 3. Nc3 c5 4. Nf3 Bg7 5. Bd3 Nc6 6. a3 a6 7. 0-0 b5 8. Ne4 e6 9. Rb1 Bb7 10. Nf2 Nge7 11. b3 Qc7 12. Bb2 Bxb2 13. Rxb2 d5 14. Be2 0-0-0 15. Ng5 Rdf8 16. Bg4 Nd8 17. d3 h6 18. Ngh3 Kb8 19. Bf3 f6 20. Qd2 Nf5 21. g3 d4 22. e4 Ne3 23. Re1 h5 24. Nd1 Ng4 25. Nhf2 f5 26. h3 Nf6 27. c4 h4 28. g4 fxg4 29. Nxg4 Nxg4 30. Bxg4 Qxf4 31. Qxf4+ Rxf4 32. Rf2 Rhf8 33. Rxf4 Rxf4 34. Rf1 Rxf1+ 35. Kxf1 Kc7 36. Kg2 Kd6 37. Nf2 Ke5 38. Kf3 Nf7 39. Ke2 Ng5 40. Nh1 Bc8 41. Nf2 Kf4 42. Nh1 Bd7 43. Nf2 Nf7 44. Nh1 Ne5 45. Nf2 Bc8 46. Kd2 Kg3 47. Ke2 Nxg4 48. hxg4 h3 49. Kf1 h2 50. Nh1+ Kxg4 51. Kg2 Kf4 52. Kxh2 Ke3 53. Kg2 Kxd3 54. Nf2+ Kc2 55. a4 bxa4 56. bxa4 d3 57. Kf3 d2 58. Ke2 e5 0-1

[Event "Schleswig Holstein-ch Seniors op 9th"]
[Site "Buesum"]
[Date "2015.10.02"]
[Round "5"]
[White "Duijker, Bert"]
[Black "Moeller, Peter1111"]
[Result "0-1"]
[ECO "D78"]
[WhiteElo "1907"]
[BlackElo "1735"]
[PlyCount "68"]
[EventDate "2015.09.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. Nf3 d5 2. g3 g6 3. Bg2 Bg7 4. d4 Nf6 5. 0-0 0-0 6. Nbd2 c6 7. c4 Bg4 8. h3 Bxf3 9. Bxf3 e6 10. Qc2 Nbd7 11. e3 Re8 12. b3 Qc8 13. Bb2 Nb6 14. Rac1 Qd7 15. Rfd1 Rad8 16. a4 a6 17. Bc3 Rb8 18. Kg2 Nc8 19. e4 dxe4 20. Bxe4 Nd6 21. Bf3 Kh8 22. c5 Nf5 23. Nc4 Nd5 24. Bxd5 Qxd5+ 25. Kh2 Qd8 26. Qe4 Qe7 27. g4 Qc7+ 28. f4 Ne7 29. Ba5 Qd7 30. Nb6 Qd8 31. b4 Nd5 32. Nc4 Qh4 33. Rf1 Nf6 34. Ne5 Nxe4 0-1

[Event "Schleswig Holstein-ch Seniors op 9th"]
[Site "Buesum"]
[Date "2015.10.01"]
[Round "4"]
[White "Ludwig, Richard"]
[Black "Duijker, Bert"]
[Result "0-1"]
[ECO "B06"]
[WhiteElo "1670"]
[BlackElo "1907"]
[PlyCount "56"]
[EventDate "2015.09.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 g6 2. Nf3 Bg7 3. d4 d6 4. Nc3 a6 5. Be2 b5 6. a3 Nd7 7. b4 Bb7 8. Bb2 Ngf6 9. Bd3 0-0 10. 0-0 c5 11. Re1 cxd4 12. Nxd4 Nb6 13. Rb1 Rc8 14. f3 Nfd7 15. Nde2 Ne5 16. Kh1 Nec4 17. Bxc4 Nxc4 18. Qc1 Nxb2 19. Qxb2 Qc7 20. Qb3 Bxc3 21. Red1 Bf6 22. Qe3 Qc4 23. g4 Rc7 24. Ng3 Rfc8 25. Rbc1 Bb2 26. Rb1 Qxc2 27. h4 Qc3 28. Qg5 Qxf3+ 0-1

[Event "Schleswig Holstein-ch Seniors op 9th"]
[Site "Buesum"]
[Date "2015.09.30"]
[Round "3"]
[White "Duijker, Bert"]
[Black "Moeller, Bernd"]
[Result "1/2-1/2"]
[ECO "E10"]
[WhiteElo "1907"]
[BlackElo "1576"]
[PlyCount "27"]
[EventDate "2015.09.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 d6 3. d4 e6 4. Nc3 c6 5. e4 Be7 6. Bf4 h6 7. h3 0-0 8. Bd3 Nbd7 9. 0-0 Nh7 10. Qc2 Nb6 11. e5 f5 12. exd6 Bxd6 13. Bxd6 Qxd6 14. c5 1/2-1/2

