[Event "Leiden SB-ch 1920"]
[Site "Leiden"]
[Date "2021.07.09"]
[Round "7"]
[White "Van den Biggelaar, Don"]
[Black "Van Vleuten, Ronald"]
[Result "0-1"]
[ECO "B01"]
[WhiteElo "1735"]
[BlackElo "1622"]
[PlyCount "42"]
[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. e4 d5 2. exd5 Qxd5 3. Nf3 Nf6 4. d4 Bf5 5. Nc3 Qd6 6. Bb5+ c6 7. Bd3 Bxd3 8. Qxd3 e6 9. 0-0 Be7 10. Ne5 0-0 11. Bg5 Nbd7 12. Rad1 Nxe5 13. dxe5 Qxe5 14. Bh4 Rfd8 15. Qf3 Rxd1 16. Rxd1 Rd8 17. h3 Qc5 18. Rxd8+ Bxd8 19. Ne4 Nxe4 20. Bxd8 Qxc2 21. Qf4 Qd1+ 0-1

[Event "Leiden SB-ch 1920"]
[Site "Leiden"]
[Date "2020.09.25"]
[Round "6"]
[White "Hellenberg, Jan Amerik"]
[Black "Van den Biggelaar, Don"]
[Result "1-0"]
[ECO "D08"]
[WhiteElo "2117"]
[BlackElo "1735"]
[PlyCount "39"]
[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 e5 3. dxe5 d4 4. Nf3 Nc6 5. a3 Nge7 6. b4 Ng6 7. Bb2 a5 8. b5 Ncxe5 9. Nxe5 Nxe5 10. e3 Be6 11. Bxd4 Nxc4 12. Qa4 Nb6 13. Qc2 a4 14. Nd2 Rc8 15. Bd3 Qd5 16. Be4 Qxb5 17. Bxb7 c5 18. Bxc8 Bxc8 19. Rb1 Qc6 20. Qe4+ 1-0

[Event "Leiden SB-ch 1920"]
[Site "Leiden"]
[Date "2020.02.21"]
[Round "5"]
[White "Van der Scheer, Henk"]
[Black "Van den Biggelaar, Don"]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "1853"]
[BlackElo "1735"]
[PlyCount "31"]
[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. Nf3 Nc6 3. e3 Nf6 4. Be2 Bf5 5. a3 e6 6. 0-0 Bd6 7. c4 dxc4 8. Bxc4 0-0 9. Nc3 Qe7 10. Re1 Rfd8 11. e4 Bg4 12. Be3 Na5 13. Be2 c5 14. e5 Bxe5 15. Nxe5 cxd4 16. Bxd4 1-0

[Event "Leiden SB-ch 1920"]
[Site "Leiden"]
[Date "2020.01.24"]
[Round "4"]
[White "Van den Biggelaar, Don"]
[Black "Henseler, Jorgen"]
[Result "0-1"]
[ECO "B22"]
[WhiteElo "1735"]
[BlackElo "2048"]
[PlyCount "60"]
[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. e4 c5 2. d4 cxd4 3. c3 Nf6 4. e5 Nd5 5. cxd4 d6 6. Nf3 Nc6 7. Bc4 Nb6 8. Bb3 dxe5 9. 0-0 exd4 10. Bf4 e6 11. Nbd2 Be7 12. Rc1 0-0 13. Ne4 Nd5 14. Bd2 e5 15. Bg5 Bxg5 16. Nfxg5 h6 17. Nf3 Nf6 18. Nxf6+ Qxf6 19. Re1 Bf5 20. Bd5 Nb4 21. Bxb7 Rab8 22. Be4 Bxe4 23. Rxe4 Nxa2 24. Rb1 Rfe8 25. Qe1 Qb6 26. Rxe5 Red8 27. Rd1 Nb4 28. Qe4 Nc6 29. Rd5 Re8 30. Qf4 Qb3 0-1

[Event "Leiden SB-ch 1920"]
[Site "Leiden"]
[Date "2019.12.20"]
[Round "3"]
[White "Hettfleisch, Maurice"]
[Black "Van den Biggelaar, Don"]
[Result "0-1"]
[ECO "C56"]
[WhiteElo "1823"]
[BlackElo "1735"]
[PlyCount "106"]
[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. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Bc4 Nf6 5. e5 d5 6. Bb5 Ne4 7. Nxd4 Bd7 8. Bxc6 bxc6 9. 0-0 Bc5 10. f3 Ng5 11. Be3 Qe7 12. f4 Ne4 13. Nd2 Nxd2 14. Qxd2 0-0 15. Nb3 Bb6 16. Qc3 f6 17. Bc5 Bxc5+ 18. Qxc5 Qe8 19. Rae1 fxe5 20. Rxe5 Qg6 21. Nd4 Rae8 22. c3 Qd6 23. Qxd6 cxd6 24. Rxe8 Rxe8 25. Kf2 c5 26. Nc2 Kf7 27. Ne3 d4 28. Nc4 Re6 29. Re1 dxc3 30. bxc3 Bb5 31. Rxe6 Kxe6 32. Nd2 d5 33. Ke3 h5 34. Nf3 Bf1 35. g3 Bg2 36. Ne5 a5 37. Nc6 d4+ 38. Nxd4+ cxd4+ 39. Kxd4 Kd6 40. c4 g6 41. c5+ Kc6 42. a3 Bf3 43. Kc4 Bg4 44. Kd4 Bf5 45. Kc4 Bd7 46. Kd4 Be8 47. Kc4 Bf7+ 48. Kd4 Ba2 49. Ke5 Kxc5 50. f5 gxf5 51. Kxf5 Bb3 52. Ke5 Bd1 53. Ke6 Kc4 0-1

[Event "Leiden SB-ch 1920"]
[Site "Leiden"]
[Date "2019.11.29"]
[Round "2"]
[White "Van den Biggelaar, Don"]
[Black "Groot, Rob"]
[Result "1-0"]
[ECO "C21"]
[WhiteElo "1735"]
[PlyCount "71"]
[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. e4 e5 2. d4 exd4 3. c3 d3 4. Bxd3 d6 5. Qb3 Nd7 6. Be3 Ne5 7. Be2 b6 8. Nf3 Be6 9. Qc2 Be7 10. Nbd2 Nf6 11. Nxe5 dxe5 12. Nf3 Nd7 13. Rd1 Qc8 14. 0-0 f6 15. Qa4 c6 16. b4 a5 17. b5 c5 18. Bc4 Nf8 19. Bd5 Bxd5 20. exd5 Bd6 21. Nd2 Qc7 22. Nc4 0-0-0 23. Nxd6+ Rxd6 24. Qg4+ Kb8 25. c4 h5 26. Qe4 g5 27. h3 Qd7 28. Rd3 h4 29. Ra3 Rh6 30. Rb1 Ng6 31. Bxc5 bxc5 32. Rxa5 Nf4 33. b6 f5 34. b7 Ra6 35. Qxe5+ Qd6 36. Qe8+ 1-0

[Event "Leiden SB-ch 1819"]
[Site "Leiden"]
[Date "2019.06.21"]
[Round "9"]
[White "Ypma, Jord"]
[Black "Van den Biggelaar, Don"]
[Result "1-0"]
[ECO "D08"]
[WhiteElo "1697"]
[BlackElo "1710"]
[PlyCount "75"]
[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 e5 3. dxe5 d4 4. Nf3 Nc6 5. a3 Nge7 6. b4 Ng6 7. Bb2 a5 8. b5 Ncxe5 9. Nxe5 Nxe5 10. e3 Be6 11. Bxd4 Nxc4 12. Qc2 Qd5 13. Nc3 Qg5 14. Bxc4 Bxc4 15. Qe4+ Be7 16. h4 Qg6 17. Qxb7 0-0 18. Rh3 Qd3 19. Rh1 Rad8 20. Qe4 Qxe4 21. Nxe4 Bxb5 22. Rh3 f5 23. Ng5 Bf6 24. Ne6 Bxd4 25. Nxd4 Bd7 26. Rc1 f4 27. Rh1 fxe3 28. fxe3 Rc8 29. Rc5 a4 30. Ke2 Bg4+ 31. Nf3 Rf7 32. Rhc1 Rcf8 33. Rxc7 Rxc7 34. Rxc7 Rb8 35. Ra7 Rb2+ 36. Kf1 Rb1+ 37. Kf2 Bxf3 38. Kxf3 1-0

[Event "Leiden SB-ch 1819"]
[Site "Leiden"]
[Date "2019.05.24"]
[Round "8"]
[White "Van den Biggelaar, Don"]
[Black "Schenkelaars, Robin"]
[Result "1-0"]
[ECO "C00"]
[WhiteElo "1710"]
[BlackElo "1559"]
[PlyCount "41"]
[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 e6 2. Nf3 d5 3. e5 c5 4. b4 cxb4 5. d4 Nc6 6. a3 bxa3 7. c3 a6 8. Nxa3 f6 9. Bd3 fxe5 10. dxe5 Bc5 11. Qc2 g6 12. h4 Nge7 13. h5 Kd7 14. Bg5 Qf8 15. Bf6 Rg8 16. hxg6 hxg6 17. Rh7 Ke8 18. Nb5 Rb8 19. Nbd4 Nf5 20. g4 Nfxd4 21. Bxg6+ 1-0

[Event "Leiden SB-ch 1819"]
[Site "Leiden"]
[Date "2019.04.26"]
[Round "7"]
[White "Binnendijk, Daan"]
[Black "Van den Biggelaar, Don"]
[Result "0-1"]
[ECO "D02"]
[WhiteElo "1876"]
[BlackElo "1710"]
[PlyCount "102"]
[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. Bf4 Nf6 3. e3 c5 4. c3 Nc6 5. Nd2 e6 6. Ngf3 Be7 7. Bd3 Nh5 8. Bg3 Nxg3 9. hxg3 h6 10. Qe2 Bd7 11. 0-0 0-0 12. Rfd1 Qc7 13. Rac1 Rac8 14. dxc5 Bxc5 15. c4 Qb6 16. cxd5 exd5 17. Nb3 Be7 18. Bb1 Be6 19. Nh4 Bxh4 20. gxh4 Ne5 21. Rxc8 Rxc8 22. Nd4 Bg4 23. f3 Bh5 24. Nf5 Re8 25. Rxd5 Bg6 26. Qb5 Qe6 27. Nd4 Nxf3+ 28. Nxf3 Qxe3+ 29. Kh1 Bxb1 30. Re5 Rxe5 31. Nxe5 Qe1+ 32. Kh2 Qxh4+ 33. Kg1 Qe7 34. Nf3 Bxa2 35. Qa4 Bd5 36. Qxa7 Bxf3 37. gxf3 Qe1+ 38. Kg2 Qe2+ 39. Kg3 Qxb2 40. Qb8+ Kh7 41. Qf4 Qf6 42. Qb4 b6 43. Kg2 Kg8 44. Kf2 Qg6 45. Qb5 h5 46. Qe8+ Kh7 47. Qe7 b5 48. Qh4 Qc2+ 49. Kg3 g6 50. Qe7 Qf5 51. Qb4 g5 0-1

[Event "Leiden SB-ch 1819"]
[Site "Leiden"]
[Date "2019.03.22"]
[Round "6"]
[White "Van den Biggelaar, Don"]
[Black "Hettfleisch, Maurice"]
[Result "0-1"]
[ECO "B22"]
[WhiteElo "1710"]
[BlackElo "1751"]
[PlyCount "76"]
[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. d4 cxd4 3. c3 Nf6 4. e5 Nd5 5. cxd4 Nc6 6. Nf3 d6 7. Bc4 Nb6 8. Bb5 dxe5 9. 0-0 Bd7 10. dxe5 Nxe5 11. Be2 Nc6 12. Nc3 g6 13. Bf4 Bg7 14. Qd2 0-0 15. Rfd1 a6 16. Rac1 Be6 17. Qe3 Nd5 18. Nxd5 Bxd5 19. Bc4 e6 20. Bxd5 exd5 21. Qb3 Qf6 22. Qxb7 Qxf4 23. Qxc6 Bxb2 24. Rb1 Qf6 25. Qxd5 Rad8 26. Qb3 Rb8 27. Qc2 Rfc8 28. Qe2 a5 29. h3 a4 30. Rd7 a3 31. Rbd1 Bc3 32. Qd3 Rb2 33. Qd5 Qe6 34. Qxe6 fxe6 35. Ng5 Rxa2 36. Nxe6 Ra1 37. Rxa1 Bxa1 38. Ra7 Bb2 0-1

[Event "Leiden SB-ch 1819"]
[Site "Leiden"]
[Date "2019.01.11"]
[Round "4"]
[White "Polak, Alexander"]
[Black "Van den Biggelaar, Don"]
[Result "1-0"]
[ECO "C55"]
[WhiteElo "2105"]
[BlackElo "1710"]
[PlyCount "61"]
[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 e5 2. Bc4 Nf6 3. d3 Nc6 4. Nf3 Be7 5. Nc3 d6 6. a3 0-0 7. h3 Be6 8. Nd5 Na5 9. Ba2 h6 10. 0-0 c5 11. b4 Nc6 12. Rb1 Rb8 13. Nd2 cxb4 14. axb4 Qd7 15. b5 Nd4 16. Nxe7+ Qxe7 17. Bxe6 Nxe6 18. Nc4 Qd7 19. Ba3 Ne8 20. Qg4 f5 21. exf5 Nd4 22. Bxd6 Rxf5 23. Bxb8 Nf6 24. Nxe5 Qd5 25. c4 Qc5 26. Bxa7 b6 27. Nd7 Nxd7 28. Kh1 Nf6 29. Qg3 Kh7 30. Bb8 Rg5 31. Qd6 1-0

[Event "Leiden SB-ch 1819"]
[Site "Leiden"]
[Date "2018.12.07"]
[Round "3"]
[White "Van den Biggelaar, Don"]
[Black "Vreugdenhil, Frans"]
[Result "1-0"]
[ECO "C44"]
[WhiteElo "1710"]
[BlackElo "1962"]
[PlyCount "59"]
[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 e5 2. d4 exd4 3. c3 Nc6 4. Nf3 d5 5. exd5 Qxd5 6. cxd4 Bg4 7. Be2 Nf6 8. Nc3 Qd8 9. 0-0 Be7 10. d5 Nb8 11. Qb3 Qc8 12. Bf4 0-0 13. Nb5 Na6 14. Rac1 Qf5 15. d6 cxd6 16. Bxd6 Rfe8 17. Nbd4 Qh5 18. Bxe7 Rxe7 19. h3 Bc8 20. Rc2 Nc5 21. Qc4 b6 22. b4 Ba6 23. b5 Bc8 24. Nc6 Re4 25. Qc3 Nd5 26. Qd2 Bf5 27. Qxd5 Rae8 28. Nfd4 Rxe2 29. Rxe2 Ne6 30. Qxf5 1-0

[Event "Leiden SB-ch 1819"]
[Site "Leiden"]
[Date "2018.11.09"]
[Round "2"]
[White "Van der Marel, Lambertus"]
[Black "Van den Biggelaar, Don"]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "2127"]
[BlackElo "1710"]
[PlyCount "51"]
[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. Nf3 Nc6 3. Bf4 Nf6 4. h3 Bf5 5. c3 e6 6. e3 Bd6 7. Bb5 0-0 8. Nbd2 a6 9. Bxc6 bxc6 10. Ne5 c5 11. g4 Be4 12. f3 Bg6 13. h4 cxd4 14. cxd4 Bxe5 15. dxe5 Nd7 16. h5 Bd3 17. Nb3 Bc4 18. Na5 Bb5 19. a4 Bc4 20. b3 c5 21. Nc6 Qc7 22. Ne7+ Kh8 23. bxc4 Nxe5 24. Nc6 Nxf3+ 25. Qxf3 Qxc6 26. h6 1-0

[Event "Leiden SB-ch 1819"]
[Site "Leiden"]
[Date "2018.10.19"]
[Round "1"]
[White "Van den Biggelaar, Don"]
[Black "Bax, Marton"]
[Result "1-0"]
[ECO "C21"]
[WhiteElo "1710"]
[BlackElo "1363"]
[PlyCount "45"]
[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 e5 2. d4 exd4 3. c3 dxc3 4. Nxc3 Bb4 5. Bc4 d6 6. Bxf7+ Kxf7 7. Qb3+ Be6 8. Qxb4 b6 9. Nf3 Nf6 10. Ng5+ Ke7 11. Nxe6 Kxe6 12. Qc4+ Kd7 13. Bg5 Nc6 14. 0-0-0 Qe7 15. f4 Qe6 16. Qa4 a6 17. e5 b5 18. Qc2 b4 19. exf6 bxc3 20. Rhe1 cxb2+ 21. Kb1 Qg4 22. h3 Nb4 23. Qa4+ 1-0

[Event "Leiden op-B 12th"]
[Site "Leiden"]
[Date "2018.07.22"]
[Round "9"]
[White "Van den Biggelaar, Don"]
[Black "Vreeburg, Jan"]
[Result "0-1"]
[ECO "B23"]
[WhiteElo "1738"]
[BlackElo "1924"]
[PlyCount "88"]
[EventDate "2018.07.13"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. e4 g6 2. f4 Bg7 3. Nc3 c5 4. Nf3 Nc6 5. Be2 e6 6. 0-0 Nge7 7. d3 d5 8. e5 Nf5 9. a3 0-0 10. Qe1 f6 11. Bd1 a6 12. Rb1 Qc7 13. Na4 fxe5 14. Nxc5 Ncd4 15. b4 b6 16. Nxd4 Nxd4 17. c3 exf4 18. Nb3 Nb5 19. Bb2 Nxc3 20. Rc1 d4 21. Nxd4 Bxd4+ 22. Kh1 Qd6 23. Bxc3 Bxc3 24. Qxc3 Bb7 25. Bf3 Rac8 26. Qd2 Bxf3 27. Rxf3 Rxc1+ 28. Qxc1 g5 29. h3 Kg7 30. Qc3+ Kg6 31. d4 Rd8 32. Qd3+ Kg7 33. Qxa6 Qxd4 34. Qb7+ Rd7 35. Qc8 e5 36. Rc3 e4 37. Rc4 Qd1+ 38. Kh2 e3 39. Re4 Qd6 40. Qc3+ Kg6 41. Kg1 Rc7 42. Re6+ Qxe6 43. Qxc7 e2 44. Qc2+ Kh6 0-1

[Event "Leiden op-B 12th"]
[Site "Leiden"]
[Date "2018.07.13"]
[Round "1"]
[White "Van den Biggelaar, Don"]
[Black "Denie, D."]
[Result "1-0"]
[ECO "B07"]
[WhiteElo "1738"]
[PlyCount "51"]
[EventDate "2018.07.13"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. e4 d6 2. f4 g6 3. Nf3 Bg7 4. Be2 Nf6 5. Nc3 0-0 6. 0-0 c5 7. d3 Qb6 8. Kh1 Nc6 9. Qe1 Bg4 10. Qh4 Bxf3 11. Bxf3 Nd4 12. Bd1 Rac8 13. Ne2 Qd8 14. Nxd4 cxd4 15. f5 Nd7 16. Bg5 f6 17. Bd2 Ne5 18. c3 dxc3 19. Bb3+ Nf7 20. Bxc3 g5 21. Qh5 Qe8 22. Rf3 Kh8 23. Rh3 h6 24. Qg6 Rc7 25. Be6 Kg8 26. Rxh6 1-0

[Event "Leiden LCT op-B 11th"]
[Site "Leiden"]
[Date "2017.07.18"]
[Round "5"]
[White "Braggaar, Pim"]
[Black "Van den Biggelaar, Don"]
[Result "1/2-1/2"]
[ECO "C44"]
[WhiteElo "1902"]
[BlackElo "1759"]
[PlyCount "110"]
[EventDate "2017.07.14"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 e5 2. d4 exd4 3. c3 d3 4. Bxd3 Nc6 5. Nf3 d6 6. 0-0 Bg4 7. Qb3 Bxf3 8. Qxb7 Ne5 9. gxf3 Nxf3+ 10. Kg2 Nh4+ 11. Kh1 Be7 12. Rg1 Bf6 13. Na3 Qc8 14. Qc6+ Kf8 15. Rg3 Ng6 16. Bg5 Ne5 17. Qa6 Qxa6 18. Bxa6 Bxg5 19. Rxg5 Nf6 20. Rf5 Ke7 21. f4 Ned7 22. Bd3 g6 23. Rg5 Nc5 24. Bc2 Ne6 25. e5 Nd7 26. exd6+ cxd6 27. Re1 Rab8 28. b3 Nb6 29. Ra5 Nc8 30. f5 gxf5 31. Bxf5 h6 32. Nb5 Kf6 33. Bxe6 fxe6 34. Nxa7 Ra8 35. Nc6 Rxa5 36. Nxa5 Ne7 37. Rf1+ Nf5 38. Nb7 Ke7 39. a4 Ra8 40. b4 Rxa4 41. Na5 Ne3 42. Rc1 e5 43. Kg1 Ra2 44. c4 Rg2+ 45. Kh1 Rc2 46. Rxc2 Nxc2 47. b5 Kd7 48. b6 Kc8 49. Kg2 Ne1+ 50. Kf2 Nd3+ 51. Ke3 Nc5 52. Nc6 Kb7 53. Nd8+ Kxb6 54. Nf7 Kc6 55. Nxh6 d5 1/2-1/2

[Event "Leiden LCT op-B 11th"]
[Site "Leiden"]
[Date "2017.07.17"]
[Round "4"]
[White "Bakker, Joop"]
[Black "Van den Biggelaar, Don"]
[Result "1/2-1/2"]
[ECO "D01"]
[WhiteElo "1884"]
[BlackElo "1759"]
[PlyCount "39"]
[EventDate "2017.07.14"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. d4 d5 2. Nc3 Nf6 3. Bg5 Nc6 4. Bxf6 exf6 5. e3 Bb4 6. Bd3 Bxc3+ 7. bxc3 Ne7 8. Ne2 Bf5 9. Ng3 Bg6 10. h4 Bxd3 11. cxd3 b6 12. Qg4 g6 13. h5 Qd7 14. Qf3 f5 15. hxg6 fxg6 16. 0-0 c5 17. dxc5 bxc5 18. e4 0-0 19. exf5 Nxf5 20. Nxf5 1/2-1/2

[Event "Leiden LCT op-B 11th"]
[Site "Leiden"]
[Date "2017.07.15"]
[Round "2"]
[White "Van Deutekom, Yde"]
[Black "Van den Biggelaar, Don"]
[Result "1-0"]
[ECO "D07"]
[WhiteElo "1858"]
[BlackElo "1759"]
[PlyCount "63"]
[EventDate "2017.07.14"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. d4 d5 2. c4 e5 3. dxe5 d4 4. Nf3 Nc6 5. a3 Nge7 6. e3 Bg4 7. Be2 d3 8. Qxd3 Qxd3 9. Bxd3 Bxf3 10. gxf3 Nxe5 11. Be2 0-0-0 12. Bd2 Nd3+ 13. Bxd3 Rxd3 14. Ke2 Rd7 15. Bc3 Nc6 16. Nd2 f6 17. f4 Bd6 18. Rag1 Re8 19. Kd1 b6 20. Kc2 Nd8 21. Re1 Nb7 22. b4 a6 23. h4 h5 24. Rhg1 Rde7 25. Rd1 Rd7 26. Rge1 Nd8 27. Nf3 Ne6 28. Rd5 Rh8 29. Red1 Nf8 30. Nd4 Kb7 31. Nf5 Rf7 32. Rxd6 1-0

[Event "Leiden op-A 10th"]
[Site "Leiden"]
[Date "2016.07.22"]
[Round "7"]
[White "Van den Biggelaar, Don"]
[Black "Scherpenisse, Kees"]
[Result "0-1"]
[ECO "B22"]
[WhiteElo "1710"]
[BlackElo "1942"]
[PlyCount "78"]
[EventDate "2016.07.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 173 Extra"]
[Source "ChessBase"]
[SourceDate "2016.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2016.08.29"]
[SourceQuality "1"]

1. e4 c5 2. d4 cxd4 3. c3 Nf6 4. e5 Nd5 5. cxd4 d6 6. Nf3 Nc6 7. Nc3 Nxc3 8. bxc3 dxe5 9. d5 e4 10. Ng5 Nb8 11. Nxe4 Qa5 12. Qb3 a6 13. Bd2 Qc7 14. Bd3 e6 15. c4 f5 16. Ng5 Qe5+ 17. Be2 Qxa1+ 18. Bd1 Qe5+ 19. Be2 Bc5 20. Nf3 Qc7 21. 0-0 0-0 22. Bc3 Re8 23. Bd3 e5 24. Bc2 e4 25. Nd4 Bd7 26. Qb2 b6 27. Re1 a5 28. Nb3 Bf8 29. Nd2 Na6 30. Bd4 Nc5 31. f3 exf3 32. Rxe8 Rxe8 33. Nxf3 Re2 34. Kf1 Re8 35. Be5 Qd8 36. Qb1 g6 37. g4 Bg7 38. Bxg7 Kxg7 39. gxf5 Qf6 0-1

[Event "Leiden SB-chB"]
[Site "Leiden"]
[Date "2014.06.24"]
[Round "7"]
[White "Van der Nat, Harre"]
[Black "Van den Biggelaar, Don"]
[Result "1-0"]
[ECO "D08"]
[WhiteElo "1790"]
[BlackElo "1560"]
[PlyCount "85"]
[EventDate "2014.05.13"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. d4 d5 2. c4 e5 3. e3 exd4 4. Qxd4 Nf6 5. cxd5 Qxd5 6. Qxd5 Nxd5 7. a3 Bd6 8. Bd2 0-0 9. Nc3 Be6 10. Nf3 Nc6 11. Bd3 Ne5 12. Be2 Rad8 13. Rd1 Nf6 14. Nxe5 Bxe5 15. 0-0 Bb3 16. f4 Bxc3 17. Bxc3 Bxd1 18. Bxd1 Rfe8 19. Bd4 b6 20. Ba4 Re7 21. b4 Ng4 22. Rf3 Nh6 23. Bc2 c5 24. Bc3 cxb4 25. Bxb4 Rc7 26. Bb3 Rd3 27. e4 Rc1+ 28. Kf2 Ng4+ 29. Kg3 Rxf3+ 30. gxf3 Rg1+ 31. Kh3 Nf2+ 32. Kh4 Nd3 33. Bd6 Nc5 34. Bd5 Ra1 35. e5 g6 36. Kg5 Ne6+ 37. Bxe6 fxe6 38. Kf6 Re1 39. Kxe6 Kg7 40. Ke7 Re3 41. e6 Rxf3 42. Kd7 Re3 43. Be5+ 1-0

[Event "Leiden SB-chB"]
[Site "Leiden"]
[Date "2014.06.17"]
[Round "6"]
[White "Van den Biggelaar, Don"]
[Black "Kuipers, Joris"]
[Result "1-0"]
[ECO "C00"]
[WhiteElo "1560"]
[BlackElo "1635"]
[PlyCount "71"]
[EventDate "2014.05.13"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. e4 e6 2. Nf3 d5 3. e5 c5 4. b4 cxb4 5. d4 Nc6 6. a3 bxa3 7. c3 Bd7 8. Bd3 f5 9. Nxa3 Nge7 10. Bg5 a6 11. 0-0 b5 12. Bxb5 Nxe5 13. Nxe5 Bxb5 14. Nxb5 axb5 15. Qh5+ g6 16. Nxg6 hxg6 17. Qxh8 Ra4 18. Bh6 Kf7 19. Qxf8+ Qxf8 20. Bxf8 Kxf8 21. Rxa4 bxa4 22. Ra1 Nc8 23. Rxa4 Nd6 24. Ra6 Ke7 25. Ra7+ Kf6 26. Rc7 g5 27. Kf1 e5 28. dxe5+ Kxe5 29. Ke2 Nc4 30. Rc6 Nd6 31. f4+ gxf4 32. Rxd6 Kxd6 33. h4 Ke5 34. Kf3 Ke6 35. Kxf4 Kf6 36. h5 1-0

[Event "Leiden SB-chB"]
[Site "Leiden"]
[Date "2014.06.10"]
[Round "5"]
[White "Van den Biggelaar, Don"]
[Black "Hoogeveen, Luuk"]
[Result "0-1"]
[ECO "B09"]
[WhiteElo "1560"]
[BlackElo "1402"]
[PlyCount "52"]
[EventDate "2014.05.13"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. f4 Bg7 5. e5 dxe5 6. fxe5 Nd5 7. Bc4 Be6 8. Qf3 Nb4 9. Bb5+ c6 10. Ba4 Qxd4 11. Nge2 Qg4 12. a3 Qxf3 13. gxf3 Nd5 14. f4 Nd7 15. Ne4 0-0-0 16. Bd2 f6 17. Nd4 Bf5 18. Nxf5 gxf5 19. exf6 N7xf6 20. Nc5 Rd6 21. 0-0-0 Rhd8 22. Nd3 Ne4 23. Rhg1 Bd4 24. Rg2 Nxd2 25. Rdxd2 Be3 26. Ne5 Nb6 0-1

[Event "Leiden SB-chB"]
[Site "Leiden"]
[Date "2014.06.03"]
[Round "4"]
[White "Uittenbogaard, Rob"]
[Black "Van den Biggelaar, Don"]
[Result "1/2-1/2"]
[ECO "D08"]
[WhiteElo "1600"]
[BlackElo "1560"]
[PlyCount "95"]
[EventDate "2014.05.13"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. d4 d5 2. c4 e5 3. dxe5 d4 4. e3 Nc6 5. Ne2 d3 6. Nf4 Nxe5 7. Nxd3 Nc6 8. Be2 Nf6 9. Nc3 Bd6 10. a3 Qe7 11. b4 Ne5 12. c5 Nxd3+ 13. Qxd3 Be5 14. f4 Bf5 15. Qc4 Bxc3+ 16. Qxc3 Ne4 17. Qe5 Qxe5 18. fxe5 Nc3 19. Bc4 0-0-0 20. 0-0 Bg6 21. Bb2 Ne4 22. Ba2 Rd2 23. Bd4 h5 24. Bxf7 Bxf7 25. Rxf7 h4 26. Raf1 h3 27. gxh3 Ng5 28. Rf8+ Rxf8 29. Rxf8+ Kd7 30. h4 Ne6 31. Rf2 Nxd4 32. exd4 Rxd4 33. Rf7+ Ke6 34. Rxg7 Rxh4 35. Rxc7 Rh3 36. a4 Ra3 37. a5 b6 38. c6 bxa5 39. Rxa7 axb4 40. Rb7 b3 41. c7 Kd7 42. h4 Kc8 43. Rb4 Kxc7 44. h5 Ra1+ 45. Kf2 Ra2+ 46. Ke3 Rh2 47. Kf3 Rxh5 48. Kg4 1/2-1/2

[Event "Leiden SB-chB"]
[Site "Leiden"]
[Date "2014.05.27"]
[Round "3"]
[White "Bingen, Stanley"]
[Black "Van den Biggelaar, Don"]
[Result "0-1"]
[ECO "C50"]
[WhiteElo "1257"]
[BlackElo "1560"]
[PlyCount "60"]
[EventDate "2014.05.13"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. 0-0 Nf6 5. d4 Bxd4 6. Nxd4 Nxd4 7. f4 d6 8. fxe5 dxe5 9. Bg5 Qe7 10. Bxf6 gxf6 11. Nc3 Be6 12. Nd5 Bxd5 13. Bxd5 0-0-0 14. Qh5 Nxc2 15. Rac1 Ne3 16. Rf2 Nxd5 17. exd5 Rxd5 18. Qf5+ Qe6 19. Qxf6 Qxf6 20. Rxf6 Rd7 21. Re1 Re8 22. Kf2 Rd2+ 23. Re2 Rxe2+ 24. Kxe2 Re7 25. Ke3 Kd7 26. Ke4 c6 27. Rh6 b5 28. Rxh7 f5+ 29. Kxf5 Rxh7 30. Kxe5 Rxh2 0-1

[Event "Leiden SB-chB"]
[Site "Leiden"]
[Date "2014.05.20"]
[Round "2"]
[White "Van den Biggelaar, Don"]
[Black "Van der Wulp, Geert"]
[Result "0-1"]
[ECO "B20"]
[WhiteElo "1560"]
[BlackElo "1672"]
[PlyCount "64"]
[EventDate "2014.05.13"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. e4 c5 2. b4 cxb4 3. a3 bxa3 4. d4 d5 5. e5 Nc6 6. Nf3 Bg4 7. c3 e6 8. Bd3 Nge7 9. 0-0 Bf5 10. Nxa3 a6 11. Bg5 Bxd3 12. Qxd3 h6 13. Bh4 g5 14. Nxg5 hxg5 15. Bxg5 Bg7 16. f4 Qd7 17. Nb5 0-0 18. Nd6 Nf5 19. Nxf5 exf5 20. Rf3 f6 21. exf6 Bxf6 22. Bh6 Rf7 23. Rg3+ Kh8 24. Rh3 Rh7 25. Rh5 Re8 26. Qh3 Nxd4 27. Rd1 Ne2+ 28. Kf1 Nxc3 29. Rd3 Qe7 30. g4 Qe1+ 31. Kg2 Re2+ 32. Kf3 Qf2# 0-1

[Event "Leiden SB-chB"]
[Site "Leiden"]
[Date "2014.05.13"]
[Round "1"]
[White "Stins, Johan"]
[Black "Van den Biggelaar, Don"]
[Result "1-0"]
[ECO "C63"]
[WhiteElo "1832"]
[BlackElo "1560"]
[PlyCount "87"]
[EventDate "2014.05.13"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 f5 4. Nc3 fxe4 5. Nxe4 Nf6 6. Nxf6+ Qxf6 7. Qe2 Be7 8. Bxc6 dxc6 9. Qxe5 Qxe5+ 10. Nxe5 0-0 11. 0-0 Bf5 12. d3 Bc5 13. Be3 Bd6 14. Nc4 Be7 15. Bd4 Bf6 16. Bxf6 Rxf6 17. Rae1 b5 18. Nd2 Be6 19. b3 Raf8 20. Re3 h5 21. Ne4 Rh6 22. Ng5 Bg4 23. h4 Rd6 24. Rfe1 Rdf6 25. f3 Bf5 26. Re7 Rc8 27. Kf2 a5 28. Ne6 Bxe6 29. R1xe6 Rxe6 30. Rxe6 c5 31. Rc6 c4 32. dxc4 bxc4 33. Rxc4 c5 34. a3 Kf7 35. b4 axb4 36. axb4 Rd8 37. Rxc5 Rd2+ 38. Kg3 Ke6 39. b5 g5 40. hxg5 h4+ 41. Kh3 Rd4 42. c4 Rf4 43. Rc6+ Kd7 44. g6 1-0

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2013.07.02"]
[Round "7"]
[White "Van den Biggelaar, Don"]
[Black "Zwaan, Gert Jan"]
[Result "1-0"]
[ECO "A30"]
[PlyCount "87"]
[EventDate "2013.05.21"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. c4 c5 2. Nc3 Nc6 3. Nf3 Nf6 4. g3 b6 5. Bg2 Bb7 6. 0-0 e6 7. e4 Be7 8. d3 0-0 9. Bf4 Nh5 10. Be3 a6 11. Qb3 Rb8 12. Rad1 g6 13. d4 Na5 14. Qc2 Nxc4 15. Bh6 Re8 16. dxc5 bxc5 17. b3 Na3 18. Qd3 d6 19. Nd2 Qc7 20. f4 Red8 21. f5 exf5 22. Nd5 Bxd5 23. Qxd5 Nf6 24. Qd3 Ng4 25. Bf4 g5 26. Be3 Nxe3 27. Qxe3 Nc2 28. Qf2 Nd4 29. exf5 f6 30. Bd5+ Kh8 31. Nf3 Nxf3+ 32. Qxf3 Bf8 33. Rde1 Re8 34. Qh5 Rxe1 35. Rxe1 Qg7 36. Re6 a5 37. Qe2 a4 38. bxa4 Qa7 39. Rxf6 c4+ 40. Kg2 Qxa4 41. Qe6 Qxa2+ 42. Kh3 g4+ 43. Kxg4 Qa7 44. Qg8# 1-0

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2013.06.25"]
[Round "6"]
[White "Van den Biggelaar, Don"]
[Black "Kettenis, John"]
[Result "1/2-1/2"]
[ECO "D93"]
[PlyCount "89"]
[EventDate "2013.05.21"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 g6 3. d4 d5 4. Nf3 Bg7 5. Bf4 c6 6. e3 0-0 7. Be2 Bf5 8. Bd3 Bxd3 9. Qxd3 Nbd7 10. 0-0 dxc4 11. Qxc4 Nh5 12. Bg5 h6 13. Bh4 g5 14. Bg3 Nxg3 15. fxg3 Rc8 16. Ne4 Nb6 17. Qd3 e5 18. Rad1 exd4 19. exd4 Qd5 20. Nc3 Qd7 21. Qc2 Nd5 22. Nxd5 Qxd5 23. b3 Rce8 24. Qd2 Re7 25. Rfe1 Rfe8 26. Rxe7 Rxe7 27. Ne5 Bxe5 28. dxe5 Qxe5 29. h3 Kg7 30. Qd4 Qxd4+ 31. Rxd4 b6 32. Kf2 f5 33. Rd6 c5 34. h4 Rf7 35. h5 f4 36. gxf4 Rxf4+ 37. Kg3 Rf7 38. a4 Rb7 39. Kg4 b5 40. axb5 Rxb5 41. Rd7+ Kf8 42. Rxa7 Rxb3 43. Rc7 Rb4+ 44. Kf5 c4 45. Rc6 1/2-1/2

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2013.06.18"]
[Round "5"]
[White "De Ruyter, Wim"]
[Black "Van den Biggelaar, Don"]
[Result "1-0"]
[ECO "C53"]
[PlyCount "65"]
[EventDate "2013.05.21"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 d6 5. d4 exd4 6. cxd4 Bb4+ 7. Bd2 Bxd2+ 8. Nbxd2 Bg4 9. d5 Nce7 10. 0-0 Nf6 11. Qb3 0-0 12. Qxb7 Bxf3 13. gxf3 Ng6 14. Qb3 Nh5 15. f4 Ngxf4 16. Qf3 Rb8 17. b3 g6 18. Kh1 Qd7 19. Rg1 Nh3 20. Rg4 Nxf2+ 21. Qxf2 Qxg4 22. Rg1 Qd7 23. Qe2 Ng7 24. Nf3 f5 25. Ng5 fxe4 26. Qxe4 Rf6 27. Bd3 Rbf8 28. Rg4 Re8 29. Ne6 Nxe6 30. dxe6 Qe7 31. Rh4 Kh8 32. Qd4 Qxe6 33. Re4 1-0

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2013.05.28"]
[Round "2"]
[White "Van den Biggelaar, Don"]
[Black "Fakkert, Erwin"]
[Result "0-1"]
[ECO "A34"]
[PlyCount "73"]
[EventDate "2013.05.21"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. c4 c5 2. Nc3 e6 3. e4 Nc6 4. Nf3 d6 5. d3 Nf6 6. Be2 Be7 7. 0-0 0-0 8. a3 a6 9. Rb1 Nd4 10. Nxd4 cxd4 11. Na2 Bd7 12. b3 Rb8 13. Bb2 e5 14. Nb4 Qc8 15. Nd5 Nxd5 16. cxd5 f5 17. Rc1 Qd8 18. exf5 Bxf5 19. Bg4 Bg5 20. Bxf5 Rxf5 21. Rc4 Qa5 22. Qg4 Rbf8 23. Rc8 Bd8 24. Bc1 Qxd5 25. Rxd8 Rxd8 26. Qxf5 Qxb3 27. Bg5 Rf8 28. Qg4 Kh8 29. Be7 Re8 30. Bxd6 Qxd3 31. Bxe5 Rg8 32. Bxd4 Qxa3 33. f4 Qe7 34. f5 Qd7 35. Qf4 Rf8 36. f6 Kg8 37. Qg5 0-1

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2013.05.21"]
[Round "1"]
[White "Bakker, Joop"]
[Black "Van den Biggelaar, Don"]
[Result "1-0"]
[ECO "A01"]
[WhiteElo "1990"]
[PlyCount "61"]
[EventDate "2013.05.21"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. b3 e5 2. Bb2 Nc6 3. e3 d5 4. Bb5 Bd7 5. Bxc6 Bxc6 6. Bxe5 d4 7. Nf3 dxe3 8. fxe3 Nf6 9. 0-0 Ng4 10. Bg3 Bd6 11. Nd4 Nf6 12. Nxc6 bxc6 13. Qf3 Qd7 14. Nc3 0-0 15. e4 Ng4 16. Bxd6 cxd6 17. d4 c5 18. dxc5 Ne5 19. Qg3 Qc6 20. cxd6 Qxd6 21. Nd5 Qc5+ 22. Kh1 Ng6 23. c4 Rae8 24. Rae1 Qd4 25. Qe3 Qe5 26. Rf5 Qb2 27. Rf2 Qe5 28. Qc3 Qg5 29. Rfe2 Nh4 30. Qg3 Qh5 31. Nf6+ 1-0

