[Event "Leiden SB-ch 1920"]
[Site "Leiden"]
[Date "2020.09.25"]
[Round "6"]
[White "Oei, Ik"]
[Black "Dobbelaar, Ruud"]
[Result "1-0"]
[ECO "A30"]
[WhiteElo "2003"]
[BlackElo "1786"]
[PlyCount "53"]
[EventDate "2019.11.08"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. Nf3 c5 2. c4 Nc6 3. b3 e5 4. d3 d6 5. Bb2 f5 6. Nbd2 Nf6 7. e3 Be7 8. Be2 0-0 9. 0-0 e4 10. dxe4 Nxe4 11. Nxe4 fxe4 12. Nd2 Bf5 13. Qb1 Bf6 14. a3 Re8 15. Rd1 Bxb2 16. Qxb2 Ne5 17. Qc2 Qh4 18. g3 Qh3 19. Bf1 Qh5 20. Qc3 Bg4 21. Rdb1 Rf8 22. Bg2 Rxf2 23. Rf1 Rxf1+ 24. Rxf1 Be2 25. Rf4 g5 26. Nxe4 Ng4 27. Rxg4 1-0

[Event "Leiden SB-ch 1920"]
[Site "Leiden"]
[Date "2020.02.21"]
[Round "5"]
[White "Dobbelaar, Ruud"]
[Black "Tabak, Stefan"]
[Result "0-1"]
[ECO "A26"]
[WhiteElo "1786"]
[BlackElo "2153"]
[PlyCount "102"]
[EventDate "2019.11.08"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nc6 3. d3 g6 4. Nf3 h6 5. g3 Bg7 6. Bg2 d6 7. 0-0 Nge7 8. Nd5 0-0 9. e4 Bg4 10. h3 Be6 11. b4 Kh7 12. b5 Nb8 13. Be3 c6 14. Nxe7 Qxe7 15. a4 Nd7 16. Nd2 c5 17. Rb1 Rab8 18. f4 exf4 19. gxf4 f5 20. Nf3 fxe4 21. dxe4 Bxc4 22. Re1 Rbd8 23. Bf2 Be6 24. Bg3 Nb6 25. f5 Bf7 26. fxg6+ Bxg6 27. Nh4 Qg5 28. Nxg6 Qxg6 29. Kh2 Be5 30. Qg4 Rg8 31. Qxg6+ Rxg6 32. Bxe5 dxe5 33. Rbd1 Rd4 34. Rxd4 cxd4 35. Bf1 Rf6 36. Rc1 Nxa4 37. Rc7+ Kg6 38. Bc4 Nb2 39. Bg8 Rb6 40. Kg3 Rxb5 41. Bf7+ Kf6 42. Bg8 Rb6 43. Kg4 Nd3 44. Rh7 Nf4 45. Rf7+ Kg6 46. Re7 d3 47. Rd7 h5+ 48. Kf3 a5 49. h4 a4 50. Bf7+ Kf6 51. Bc4 Rb4 0-1

[Event "Leiden SB-ch 1920"]
[Site "Leiden"]
[Date "2020.01.24"]
[Round "4"]
[White "Lafeber, Evert"]
[Black "Dobbelaar, Ruud"]
[Result "0-1"]
[ECO "E76"]
[WhiteElo "1335"]
[BlackElo "1786"]
[PlyCount "92"]
[EventDate "2019.11.08"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 d6 3. Nc3 g6 4. e4 Bg7 5. f4 0-0 6. Bd3 Bg4 7. Nf3 Nc6 8. Be3 e5 9. d5 exf4 10. dxc6 fxe3 11. cxb7 Rb8 12. Qb3 Nd7 13. 0-0 Nc5 14. Qc2 Rxb7 15. Rab1 Ne6 16. Ne2 c5 17. Ne1 Be5 18. g3 g5 19. Kg2 Nd4 20. Nxd4 cxd4 21. Be2 Be6 22. b3 Qd7 23. Rf5 f6 24. Rd1 Rc7 25. Nf3 Bxf5 26. exf5 Qc6 27. Kg1 Qb6 28. Qd3 Qa5 29. Nxd4 Bxd4 30. Qxd4 Qxf5 31. Qxe3 Qc5 32. Kf2 Re7 33. Qxc5 dxc5 34. Bh5 Rc8 35. Rd6 Kg7 36. Bf3 f5 37. Bd1 Rce8 38. Bh5 Rf8 39. Rc6 Re5 40. Rc7+ Kh6 41. Bf7 a5 42. Bd5 Rfe8 43. Rc6+ Kg7 44. Rc7+ R8e7 45. Rxc5 Re2+ 46. Kf1 g4 0-1

[Event "Leiden SB-ch 1920"]
[Site "Leiden"]
[Date "2019.12.20"]
[Round "3"]
[White "Dobbelaar, Ruud"]
[Black "Uittenbogaard, Rob"]
[Result "1-0"]
[ECO "A25"]
[WhiteElo "1786"]
[BlackElo "1563"]
[PlyCount "78"]
[EventDate "2019.11.08"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nf6 3. g3 Bc5 4. Bg2 Nc6 5. e3 0-0 6. Nge2 d6 7. a3 a6 8. 0-0 Be6 9. b4 Ba7 10. d3 Qc8 11. Nd5 Bxd5 12. cxd5 Ne7 13. Nc3 Qd7 14. Qb3 b6 15. Bd2 Rab8 16. b5 a5 17. Rac1 Rbc8 18. Nd1 Ng6 19. e4 Ne8 20. Ne3 Ne7 21. f4 exf4 22. gxf4 Ng6 23. a4 Nh4 24. Qd1 Nxg2 25. Kxg2 f5 26. Nxf5 Rxf5 27. exf5 Qxf5 28. Bc3 Nf6 29. Bxf6 gxf6 30. Qf3 Kh8 31. Kh1 Bb8 32. Rg1 Qd7 33. Rce1 Qf7 34. Re6 c5 35. bxc6 Rxc6 36. dxc6 Qxe6 37. Qe4 Qf7 38. f5 Qh5 39. Qd5 Bc7 1-0

[Event "Leiden SB-ch 1920"]
[Site "Leiden"]
[Date "2019.11.29"]
[Round "2"]
[White "Van Drunick, Jan Willem"]
[Black "Dobbelaar, Ruud"]
[Result "1-0"]
[ECO "D47"]
[WhiteElo "1916"]
[BlackElo "1786"]
[PlyCount "81"]
[EventDate "2019.11.08"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 e6 5. e3 Be7 6. Bd3 dxc4 7. Bxc4 0-0 8. 0-0 Nbd7 9. e4 b5 10. Bd3 b4 11. Na4 a5 12. Qe2 c5 13. dxc5 Nxc5 14. Nxc5 Bxc5 15. e5 Nd5 16. Bxh7+ Kh8 17. Bd3 Be7 18. h4 f5 19. exf6 Nxf6 20. Bg5 Bb7 21. Rfd1 Qd5 22. Bc4 Qe4 23. Qxe4 Bxe4 24. Bxe6 Rae8 25. Nd4 Bc5 26. Bh3 Bd5 27. Be3 g6 28. Rac1 Bd6 29. Nb5 Be5 30. Nc7 Bxc7 31. Rxc7 Bxa2 32. Rd6 Rd8 33. Rcc6 Rxd6 34. Rxd6 Bb1 35. Bd4 Kg7 36. Ra6 Bd3 37. Rxa5 Kh6 38. Ra7 b3 39. g4 g5 40. f4 Nd5 41. Bg7+ 1-0

[Event "Leiden SB-ch 1819"]
[Site "Leiden"]
[Date "2019.06.21"]
[Round "9"]
[White "Kindt, Manfred"]
[Black "Dobbelaar, Ruud"]
[Result "1-0"]
[ECO "B31"]
[WhiteElo "1976"]
[BlackElo "1793"]
[PlyCount "95"]
[EventDate "2018.10.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. c3 Bg7 5. 0-0 Qb6 6. Na3 Nf6 7. Re1 0-0 8. e5 Nd5 9. Bc4 Nc7 10. Bf1 Na5 11. Rb1 d5 12. b4 cxb4 13. Rxb4 Qc5 14. Nc2 Nc6 15. Ra4 b5 16. d4 Qb6 17. Ra3 a5 18. Rb3 a4 19. Rb1 Na5 20. Ne3 Qc6 21. Ba3 Re8 22. Bc5 Rb8 23. g3 Bd7 24. Bg2 Na6 25. Ng5 Be6 26. Nxe6 fxe6 27. Bb4 Nc4 28. Nxc4 bxc4 29. Ba3 Rxb1 30. Qxb1 Rb8 31. Qd1 Qd7 32. h4 Nc7 33. h5 g5 34. Bc1 Rb1 35. Qc2 Qb5 36. Rf1 Bh6 37. Kh2 Ra1 38. Ba3 Rxf1 39. Bxf1 Qe8 40. Be2 Qd7 41. Bd1 Nb5 42. Qxa4 Qb7 43. Qb4 Qa6 44. Bb2 Bf8 45. a4 Na7 46. Bc1 h6 47. Qb1 Nc6 48. Qg6+ 1-0

[Event "Leiden SB-ch 1819"]
[Site "Leiden"]
[Date "2019.05.24"]
[Round "8"]
[White "Dobbelaar, Ruud"]
[Black "Henseler, Jorgen"]
[Result "0-1"]
[ECO "E87"]
[WhiteElo "1793"]
[BlackElo "2017"]
[PlyCount "58"]
[EventDate "2018.10.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 g6 3. e4 d6 4. d4 Bg7 5. f3 0-0 6. Be3 e5 7. d5 Nh5 8. Qd2 f5 9. Nge2 Nd7 10. exf5 gxf5 11. 0-0-0 Nc5 12. Ng3 Nf4 13. Bxf4 exf4 14. Qxf4 b5 15. cxb5 a6 16. Qd2 Qh4 17. f4 Bh6 18. Nge2 axb5 19. Kb1 b4 20. Nb5 Ne4 21. Qxb4 Nf2 22. Nxc7 Ra7 23. Qe1 Rxc7 24. g3 Qe7 25. Qxf2 Qe4+ 26. Ka1 Bg7 27. Rg1 Bxb2+ 28. Kxb2 Qc2+ 29. Ka3 Bd7 0-1

[Event "Leiden SB-ch 1819"]
[Site "Leiden"]
[Date "2019.04.26"]
[Round "7"]
[White "Weidema, Luuk"]
[Black "Dobbelaar, Ruud"]
[Result "0-1"]
[ECO "A36"]
[WhiteElo "1612"]
[BlackElo "1793"]
[PlyCount "90"]
[EventDate "2018.10.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 d6 3. g3 c5 4. Bg2 Nc6 5. e4 Bg4 6. Nge2 Ne5 7. d3 Nf3+ 8. Kf1 Nd4 9. h3 Bd7 10. Rb1 Nc6 11. a3 a5 12. Nb5 e5 13. Bg5 Nd4 14. Nexd4 cxd4 15. Qb3 a4 16. Qb4 Qb6 17. Bxf6 gxf6 18. Qd2 Bxb5 19. cxb5 Qxb5 20. Rc1 Be7 21. Rc4 Ra6 22. Rc8+ Bd8 23. Ke2 0-0 24. h4 Kg7 25. Rc2 Ba5 26. Qc1 Rc6 27. Bh3 Qb3 28. Rxc6 bxc6 29. h5 h6 30. Bf5 Rb8 31. Rh4 Qxb2+ 32. Qxb2 Rxb2+ 33. Kf3 Rd2 34. Rg4+ Kf8 35. Bh7 Rxd3+ 36. Kg2 Rxa3 37. Rg8+ Ke7 38. Ra8 Bb6 39. Ra6 d3 40. Rxb6 Rb3 41. Rxc6 d2 42. Bf5 d1Q 43. Rc7+ Kf8 44. Rc8+ Kg7 45. Rc7 Rb1 0-1

[Event "Leiden SB-ch 1819"]
[Site "Leiden"]
[Date "2019.03.22"]
[Round "6"]
[White "Dobbelaar, Ruud"]
[Black "Ypma, Jord"]
[Result "0-1"]
[ECO "A22"]
[WhiteElo "1793"]
[BlackElo "1697"]
[PlyCount "60"]
[EventDate "2018.10.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nf6 3. e4 Bc5 4. d3 d6 5. h3 Nc6 6. Bg5 Be6 7. Nf3 h6 8. Be3 Bxe3 9. fxe3 Nh5 10. Ne2 Qe7 11. g4 Nf6 12. Ng3 g6 13. Qd2 Bd7 14. 0-0-0 a6 15. d4 b5 16. a3 Rb8 17. d5 Nd8 18. Qa5 Nb7 19. Qxc7 0-0 20. Nd2 Rfc8 21. Qb6 Nc5 22. Qa5 bxc4 23. Qc3 Ba4 24. Bxc4 Qb7 25. b4 Bxd1 26. bxc5 Ba4 27. c6 Qb6 28. Re1 Qc5 29. Qd3 Rb6 30. Ne2 Rcb8 0-1

[Event "Leiden SB-ch 1819"]
[Site "Leiden"]
[Date "2019.02.15"]
[Round "5"]
[White "Dobbelaar, Ruud"]
[Black "Hettfleisch, Maurice"]
[Result "1-0"]
[ECO "A29"]
[WhiteElo "1793"]
[BlackElo "1751"]
[PlyCount "79"]
[EventDate "2018.10.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nf6 3. g3 d5 4. cxd5 Nxd5 5. Bg2 Nb6 6. Nf3 Nc6 7. d3 Be7 8. 0-0 0-0 9. a3 Be6 10. b4 Nd4 11. Rb1 Nxf3+ 12. Bxf3 c6 13. Ne4 Bd5 14. Bb2 Nd7 15. Nd2 Re8 16. Bg2 Bf8 17. Bh3 Be6 18. Bg2 f6 19. Nc4 Nb6 20. Qc2 Nd5 21. e4 Nc7 22. f4 Nb5 23. fxe5 Nd4 24. Qf2 Bxc4 25. exf6 Qxf6 26. Qxf6 gxf6 27. dxc4 Rad8 28. Rbd1 c5 29. Bxd4 cxd4 30. Rxf6 Bg7 31. Rf5 Rc8 32. e5 Bxe5 33. Bxb7 Rc7 34. Bd5+ Kh8 35. b5 Bd6 36. Rd3 Rce7 37. Kg2 Bc5 38. Bf3 Rc8 39. Bc6 Rd8 40. Rxc5 1-0

[Event "Leiden SB-ch 1819"]
[Site "Leiden"]
[Date "2018.12.07"]
[Round "3"]
[White "Turenhout, Ryanne"]
[Black "Dobbelaar, Ruud"]
[Result "0-1"]
[ECO "D13"]
[WhiteElo "1435"]
[BlackElo "1793"]
[PlyCount "128"]
[EventDate "2018.10.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[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 Nc6 6. Bf4 Ne4 7. e3 e6 8. a3 Bd6 9. Bxd6 Qxd6 10. Qc2 f5 11. Be2 0-0 12. 0-0 Bd7 13. Rac1 Rac8 14. Qa4 a6 15. Qd1 b5 16. b4 Qe7 17. Nb1 Kh8 18. Nfd2 g5 19. Nb3 Nd6 20. Nc5 Ra8 21. Nc3 Qg7 22. Qd3 Nc4 23. Ra1 Rf6 24. Qc2 Be8 25. Bxc4 bxc4 26. Qd2 g4 27. g3 Nd8 28. Ne2 Nf7 29. f4 gxf3 30. Rxf3 Ng5 31. Rf2 Nh3+ 32. Kg2 Nxf2 33. Kxf2 Qg4 34. Nf4 Bf7 35. Qe2 h5 36. Qxg4 hxg4 37. Rh1 Kg7 38. Nd7 Rh6 39. Ng2 Rah8 40. Nh4 Be8 41. Nc5 Kf7 42. Nxa6 Rxh4 43. gxh4 Rxh4 44. Nc5 Ke7 45. a4 c3 46. b5 c2 47. Kg3 Rh3+ 48. Kg2 Rxe3 49. Rc1 Re2+ 50. Kg3 Kd6 51. b6 Re3+ 52. Kf2 Rc3 53. a5 Bb5 54. a6 Bxa6 55. Nxa6 Kc6 56. Nb4+ Kxb6 57. Rxc2 Rc4 58. Rb2 Rxd4 59. Nc2+ Kc5 60. Ne3 Rd3 61. Rc2+ Kd4 62. Nf1 f4 63. Nd2 e5 64. Nb3+ Rxb3 0-1

[Event "Leiden SB-ch 1819"]
[Site "Leiden"]
[Date "2018.11.09"]
[Round "2"]
[White "Dobbelaar, Ruud"]
[Black "Sannen, Jette"]
[Result "1-0"]
[ECO "A29"]
[WhiteElo "1793"]
[BlackElo "1310"]
[PlyCount "49"]
[EventDate "2018.10.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nf6 3. g3 Be7 4. Bg2 0-0 5. Nf3 Nc6 6. d3 d5 7. cxd5 Nxd5 8. 0-0 Be6 9. d4 Bf6 10. e3 exd4 11. Nxd4 Nxd4 12. exd4 Re8 13. Ne4 c6 14. Nc5 Bc8 15. a3 Nc7 16. Be3 Nb5 17. Nb3 Be6 18. Nc5 Bxd4 19. Bxd4 Nxd4 20. Re1 Bf5 21. Rxe8+ Qxe8 22. Qxd4 Rd8 23. Qe3 Qf8 24. b4 Qd6 25. Nxb7 1-0

[Event "Leiden SB-ch 1819"]
[Site "Leiden"]
[Date "2018.10.19"]
[Round "1"]
[White "Schenkelaars, Robin"]
[Black "Dobbelaar, Ruud"]
[Result "1-0"]
[ECO "B46"]
[WhiteElo "1559"]
[BlackElo "1793"]
[PlyCount "99"]
[EventDate "2018.10.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 Nc6 6. a3 Nf6 7. Be3 Qc7 8. f3 Be7 9. Qd2 b5 10. b4 0-0 11. Rd1 Bb7 12. Nxc6 dxc6 13. Qf2 Nd7 14. Qg3 Qxg3+ 15. hxg3 Rfd8 16. Be2 a5 17. Nxb5 cxb5 18. Bxb5 Nf6 19. Rxd8+ Bxd8 20. 0-0 Bc7 21. g4 h6 22. Rd1 Be5 23. Bb6 axb4 24. axb4 Bc3 25. Bc5 e5 26. Rd3 Be1 27. Kf1 Bg3 28. Ke2 Bf4 29. Rd6 Nxe4 30. fxe4 Bxe4 31. Bc6 Bxc6 32. Rxc6 Rd8 33. Rd6 Ra8 34. Rd5 g5 35. b5 e4 36. Bd6 Rd8 37. Bxf4 Rxd5 38. c4 Rc5 39. b6 Rxc4 40. b7 gxf4 41. b8Q+ Kg7 42. Qe5+ Kg8 43. Qxf4 Rc2+ 44. Kf1 Rc6 45. Qxe4 Re6 46. Qd4 Rg6 47. Kf2 Rg5 48. Kf3 Kh7 49. Qf6 Rg7 50. g3 1-0

