[Event "Leiden SB-ch 1920"]
[Site "Leiden"]
[Date "2020.02.21"]
[Round "5"]
[White "Riegman, Timothy"]
[Black "Beetstra, Jaap"]
[Result "0-1"]
[ECO "C01"]
[BlackElo "1721"]
[PlyCount "58"]
[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 e6 2. d4 d5 3. exd5 exd5 4. Be2 Bd6 5. Nf3 Nf6 6. 0-0 0-0 7. Nbd2 Re8 8. c4 Bf5 9. Re1 c6 10. Nf1 Nbd7 11. Ng3 Bg4 12. Bg5 h6 13. Bxf6 Nxf6 14. cxd5 Nxd5 15. Qc2 Qc7 16. Rad1 Rad8 17. h3 Bxh3 18. gxh3 Bxg3 19. Bd3 Bd6 20. Nh4 Nf4 21. Bf5 g6 22. Nxg6 fxg6 23. Bxg6 Nxg6 24. Qxg6+ Qg7 25. Rxe8+ Rxe8 26. Qxg7+ Kxg7 27. Rd2 Re4 28. f3 Rf4 29. Rg2+ Kf7 0-1

[Event "Leiden SB-ch 1920"]
[Site "Leiden"]
[Date "2020.01.24"]
[Round "4"]
[White "Beetstra, Jaap"]
[Black "Van der Scheer, Henk"]
[Result "0-1"]
[ECO "B14"]
[WhiteElo "1721"]
[BlackElo "1853"]
[PlyCount "88"]
[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 c6 2. d4 d5 3. exd5 cxd5 4. c4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Nf3 Be7 8. Bd3 0-0 9. cxd5 Nxd5 10. h4 f6 11. Nxd5 Qxd5 12. Be3 Nb4 13. Bb1 Qb5 14. a3 Nd5 15. Qc2 f5 16. Qe2 Bd7 17. Bd3 Qb6 18. Ne5 Rad8 19. Nc4 Qc7 20. Bg5 Bf6 21. Bxf6 Nxf6 22. 0-0 Bc8 23. Rad1 Rxd4 24. Ne5 Rxh4 25. g3 Rd4 26. Nf3 Rd6 27. Bc4 Ne4 28. Nd4 Kh8 29. Nb5 Qb6 30. Nxd6 Nxd6 31. b3 Ne4 32. Qd3 a6 33. Qd4 Qc7 34. Qe3 b5 35. Bd3 Bb7 36. Rc1 Qf7 37. Qb6 Bd5 38. Bxe4 Bxe4 39. f3 Bd5 40. Rc7 Qg6 41. Kg2 f4 42. Qf2 h6 43. b4 Rf5 44. Rh1 fxg3 0-1

[Event "Leiden SB-ch 1920"]
[Site "Leiden"]
[Date "2019.12.20"]
[Round "3"]
[White "De Mooij, Marco"]
[Black "Beetstra, Jaap"]
[Result "1-0"]
[ECO "C11"]
[WhiteElo "1816"]
[BlackElo "1721"]
[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 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. f4 c5 6. Nf3 Nc6 7. Be3 Be7 8. Qd2 0-0 9. dxc5 Bxc5 10. 0-0-0 Qe7 11. Bxc5 Nxc5 12. Bd3 Nxd3+ 13. Qxd3 f6 14. Rhe1 a6 15. Kb1 f5 16. Nd4 Bd7 17. g3 Rac8 18. Nxd5 exd5 19. e6 Be8 20. Nxf5 Rxf5 21. Qxf5 Nb4 22. Qe5 Nxc2 23. Rc1 Qc5 24. f5 Qc4 25. Qe2 Ba4 26. Qxc4 dxc4 27. Rxc2 Bxc2+ 28. Kxc2 Kf8 29. Rd1 Rc7 30. Kc3 b5 31. a3 Ke7 32. Rd5 h5 33. h3 Kf6 34. g4 hxg4 35. hxg4 g6 36. Rd7 1-0

[Event "Leiden SB-ch 1920"]
[Site "Leiden"]
[Date "2019.11.29"]
[Round "2"]
[White "Beetstra, Jaap"]
[Black "Sonneveldt, Peter"]
[Result "1-0"]
[ECO "D42"]
[WhiteElo "1721"]
[BlackElo "1428"]
[PlyCount "51"]
[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 c6 2. d4 d5 3. exd5 cxd5 4. c4 dxc4 5. Bxc4 Nf6 6. Nc3 e6 7. Nf3 Nc6 8. 0-0 Be7 9. a3 0-0 10. Bd3 b6 11. Bf4 Bd6 12. Bg5 Be7 13. Rc1 Bb7 14. Bb1 Rc8 15. Qd3 g6 16. h4 Re8 17. Ba2 Nd5 18. Ne4 Bxg5 19. hxg5 Nce7 20. Ne5 Kg7 21. Rxc8 Bxc8 22. Qf3 Rf8 23. Ng4 Bb7 24. Ngf6 Qc7 25. Qh3 Rh8 26. Qh6# 1-0

[Event "Leiden SB-ch 1920"]
[Site "Leiden"]
[Date "2019.11.08"]
[Round "1"]
[White "Kuiper, Machiel"]
[Black "Beetstra, Jaap"]
[Result "1/2-1/2"]
[ECO "D00"]
[WhiteElo "1386"]
[BlackElo "1721"]
[PlyCount "57"]
[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 e6 2. Bf4 Nf6 3. e3 d5 4. h3 Bd6 5. Nf3 Ne4 6. Nbd2 Nd7 7. c4 Bxf4 8. exf4 c6 9. Bd3 f5 10. 0-0 0-0 11. Be2 Ndf6 12. Ne5 Qb6 13. Nb3 Qc7 14. c5 Bd7 15. Qe1 Ne8 16. Nd2 Nxd2 17. Qxd2 Nf6 18. Rac1 Rad8 19. b4 a6 20. Kh2 Ra8 21. a3 Rfe8 22. f3 Re7 23. g4 fxg4 24. hxg4 Be8 25. Bd3 g6 26. Qg2 a5 27. Ra1 Nd7 28. Qh3 Nxe5 29. fxe5 1/2-1/2

[Event "Leiden SB-ch 1819"]
[Site "Leiden"]
[Date "2019.06.21"]
[Round "9"]
[White "Beetstra, Jaap"]
[Black "Salomons, Quinten"]
[Result "1/2-1/2"]
[ECO "B22"]
[WhiteElo "1722"]
[BlackElo "1741"]
[PlyCount "38"]
[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. c3 d5 3. exd5 Qxd5 4. d4 Nc6 5. Be3 e5 6. dxc5 Qxd1+ 7. Kxd1 Nf6 8. Bb5 Bg4+ 9. f3 0-0-0+ 10. Ke2 Bf5 11. Na3 a6 12. Bc4 Nd5 13. Bxd5 Rxd5 14. Rd1 Rxd1 15. Kxd1 Be6 16. b3 Be7 17. Nh3 Rd8+ 18. Ke2 Bxh3 19. gxh3 b6 1/2-1/2

[Event "Leiden SB-ch 1819"]
[Site "Leiden"]
[Date "2019.05.24"]
[Round "8"]
[White "Oosterom, Erik"]
[Black "Beetstra, Jaap"]
[Result "1-0"]
[ECO "E06"]
[WhiteElo "2062"]
[BlackElo "1722"]
[PlyCount "143"]
[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. Nf3 d5 2. d4 Nf6 3. c4 e6 4. g3 Be7 5. Bg2 0-0 6. 0-0 c6 7. Nc3 b6 8. Nd2 Bb7 9. e4 dxe4 10. Ndxe4 Qc8 11. Nxf6+ Bxf6 12. Ne4 Be7 13. Qh5 Nd7 14. Bg5 Bxg5 15. Qxg5 Qc7 16. Qe7 Rfe8 17. Qd6 Rec8 18. Rac1 c5 19. d5 Nf6 20. Qxc7 Rxc7 21. Nxf6+ gxf6 22. dxe6 fxe6 23. Bxb7 Rxb7 24. Rfd1 Kf7 25. Rd6 Ke7 26. Rcd1 Rc8 27. Kf1 Rcc7 28. Rd8 Rd7 29. R1xd7+ Rxd7 30. Rh8 Kd6 31. Ke2 e5 32. g4 Ke6 33. b3 f5 34. h3 fxg4 35. hxg4 Rf7 36. Ke3 Kf6 37. Rd8 Rg7 38. f3 Rf7 39. Ke4 Re7 40. Rf8+ Ke6 41. g5 Kd6 42. Rf6+ Re6 43. Rf7 h6 44. gxh6 Rxh6 45. Rxa7 Rh4+ 46. Ke3 Rh1 47. Rg7 Re1+ 48. Kd3 Rd1+ 49. Ke4 Rd4+ 50. Ke3 Rd1 51. Rg6+ Kc7 52. Ke4 Re1+ 53. Kd5 Rd1+ 54. Ke6 Rd6+ 55. Kf5 Rd3 56. Ke4 Rd1 57. Kxe5 Re1+ 58. Kf5 Re2 59. Re6 Rxa2 60. f4 Rb2 61. Re3 Kd6 62. Kf6 Rh2 63. Rd3+ Kc7 64. f5 Re2 65. Kf7 Re1 66. f6 Re5 67. Kg7 Rg5+ 68. Kf8 Rg4 69. f7 Re4 70. Rg3 Kd7 71. Kg7 Re7 72. Rd3+ 1-0

[Event "Leiden SB-ch 1819"]
[Site "Leiden"]
[Date "2019.04.26"]
[Round "7"]
[White "Beetstra, Jaap"]
[Black "Agaian, Jura"]
[Result "1-0"]
[ECO "B30"]
[WhiteElo "1722"]
[BlackElo "1755"]
[PlyCount "47"]
[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 a6 4. Bxc6 dxc6 5. d3 e6 6. 0-0 Be7 7. Nc3 Nf6 8. h3 Qc7 9. Be3 0-0 10. Qd2 e5 11. b3 Nh5 12. Rae1 Re8 13. g4 Nf4 14. Bxf4 exf4 15. e5 g5 16. Ne4 Qd8 17. Qc3 h5 18. Nf6+ Bxf6 19. exf6 hxg4 20. Qxc5 Re6 21. Qxg5+ Kf8 22. Qg7+ Ke8 23. Ng5 Qxf6 24. Qxf6 1-0

[Event "Leiden SB-ch 1819"]
[Site "Leiden"]
[Date "2019.03.22"]
[Round "6"]
[White "Polak, Alexander"]
[Black "Beetstra, Jaap"]
[Result "1-0"]
[ECO "C11"]
[WhiteElo "2105"]
[BlackElo "1722"]
[PlyCount "47"]
[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. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. f4 c5 6. Nf3 Nc6 7. Be3 Be7 8. Qd2 0-0 9. dxc5 Nxc5 10. Qf2 b6 11. Bb5 Bb7 12. Bxc6 Bxc6 13. Nd4 Bb7 14. 0-0-0 Qc7 15. Qg3 Rfd8 16. f5 Bf8 17. f6 g6 18. Ncb5 Qd7 19. Qh4 Ne4 20. Bh6 Bc5 21. Rd3 a6 22. Rh3 axb5 23. Bg7 h5 24. Qxh5 1-0

[Event "Leiden SB-ch 1819"]
[Site "Leiden"]
[Date "2019.02.15"]
[Round "5"]
[White "Beetstra, Jaap"]
[Black "Heijboer, Herman"]
[Result "1/2-1/2"]
[ECO "C33"]
[WhiteElo "1722"]
[BlackElo "1778"]
[PlyCount "85"]
[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. f4 exf4 3. Bc4 c6 4. d4 d5 5. exd5 cxd5 6. Bd3 Nf6 7. Bxf4 Be6 8. c3 Bd6 9. Bxd6 Qxd6 10. Nf3 Nbd7 11. Nbd2 a6 12. 0-0 h6 13. a4 0-0 14. Re1 Bg4 15. Qb3 Rab8 16. Ne5 Be6 17. Qc2 Rfc8 18. Ndf3 b5 19. axb5 axb5 20. Qe2 b4 21. Ra6 Rb6 22. Rxb6 Qxb6 23. Qd2 bxc3 24. bxc3 Nxe5 25. Nxe5 Qa5 26. Rc1 Qa3 27. h3 Qa5 28. Qb2 Ra8 29. Kf2 g6 30. c4 Qa2 31. Rc2 Qxb2 32. Rxb2 dxc4 33. Bxc4 Bxc4 34. Nxc4 Ra4 35. Rc2 Nd5 36. Kf3 h5 37. g4 Kg7 38. gxh5 gxh5 39. h4 Kf6 40. Kf2 Rb4 41. Ne3 Rxd4 42. Rc6+ Ke5 43. Nxd5 1/2-1/2

[Event "Leiden SB-ch 1819"]
[Site "Leiden"]
[Date "2019.01.11"]
[Round "4"]
[White "Plug, Arjan JH"]
[Black "Beetstra, Jaap"]
[Result "0-1"]
[ECO "C06"]
[WhiteElo "1830"]
[BlackElo "1722"]
[PlyCount "94"]
[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. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. Bd3 c5 6. c3 Nc6 7. Ngf3 g6 8. h4 Be7 9. Qe2 Qc7 10. Nf1 h6 11. a3 c4 12. Bc2 Na5 13. Ne3 b6 14. Ng4 Bf8 15. h5 g5 16. Nf6+ Nxf6 17. exf6 Nc6 18. 0-0 Bd7 19. Ne5 Nxe5 20. dxe5 0-0-0 21. Be3 Qxe5 22. f4 gxf4 23. Rxf4 Bc5 24. Rf3 Bc6 25. Qf2 d4 26. cxd4 Bxd4 27. Bxd4 Qxd4 28. Qxd4 Rxd4 29. Rg3 Rd2 30. Rc1 Bd5 31. Rg7 e5 32. Be4 Be6 33. b3 b5 34. a4 Kd7 35. bxc4 b4 36. a5 b3 37. Rb1 b2 38. Bd5 Rc2 39. Kh2 Rb8 40. Be4 Rxc4 41. Rd1+ Rd4 42. Rxd4+ exd4 43. Bb1 d3 44. Rg3 Rb3 45. Rf3 d2 46. Rf1 Bg4 47. Ba2 d1Q 0-1

[Event "Leiden SB-ch 1819"]
[Site "Leiden"]
[Date "2018.12.07"]
[Round "3"]
[White "Beetstra, Jaap"]
[Black "Tolenaar, Jan"]
[Result "1/2-1/2"]
[ECO "B14"]
[WhiteElo "1722"]
[BlackElo "2048"]
[PlyCount "63"]
[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 c6 2. d4 d5 3. exd5 cxd5 4. c4 Nf6 5. Nc3 e6 6. Nf3 Be7 7. Bf4 Bd7 8. c5 a5 9. Nb5 0-0 10. Bd3 Bxb5 11. Bxb5 Nc6 12. a3 a4 13. 0-0 Qa5 14. Qe2 Rfc8 15. Rac1 b6 16. cxb6 Qxb6 17. Bxc6 Rxc6 18. Rxc6 Qxc6 19. Rc1 Qb6 20. Qc2 h6 21. Qc6 Ra6 22. Qc7 Bd6 23. Bxd6 Qxd6 24. Ne5 Qxc7 25. Rxc7 Rb6 26. Rc2 Rb3 27. Kf1 Ne4 28. Nd7 Rd3 29. Rc8+ Kh7 30. Nf8+ Kg8 31. Ng6+ Kh7 32. Nf8+ 1/2-1/2

[Event "Leiden SB-ch 1819"]
[Site "Leiden"]
[Date "2018.11.09"]
[Round "2"]
[White "Passenier, Peter"]
[Black "Beetstra, Jaap"]
[Result "1-0"]
[ECO "C05"]
[WhiteElo "2136"]
[BlackElo "1722"]
[PlyCount "103"]
[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. d4 d5 3. Nd2 Nf6 4. Bd3 c5 5. c3 Nc6 6. Ngf3 Qb6 7. exd5 exd5 8. Qe2+ Be7 9. dxc5 Qxc5 10. 0-0 0-0 11. Nb3 Qd6 12. Nbd4 Nxd4 13. Nxd4 a6 14. Re1 Re8 15. Qf3 Bg4 16. Qg3 Qxg3 17. hxg3 Bc5 18. Be3 Rac8 19. f3 Bxd4 20. Bxd4 Bd7 21. Bxf6 gxf6 22. Kf2 Kg7 23. Rxe8 Rxe8 24. Re1 Rxe1 25. Kxe1 h6 26. Kf2 Kf8 27. Ke3 Ke7 28. Kd4 Kd6 29. Bc2 b6 30. Bb3 Be6 31. Bd1 Bd7 32. f4 f5 33. a3 Be6 34. Be2 Bc8 35. Bh5 Be6 36. Bf3 f6 37. Bh5 Kc6 38. Be2 Bc8 39. Bf3 Be6 40. c4 Kd6 41. Bxd5 Bc8 42. b4 a5 43. bxa5 bxa5 44. c5+ Kc7 45. Bf3 Be6 46. Be2 Kc6 47. Bc4 Bc8 48. a4 Kc7 49. Kd5 Bd7 50. Bb5 Bc8 51. c6 Kd8 52. Kd6 1-0

[Event "Leiden SB-ch 1819"]
[Site "Leiden"]
[Date "2018.10.19"]
[Round "1"]
[White "Beetstra, Jaap"]
[Black "Cools, Frank"]
[Result "1-0"]
[ECO "C15"]
[WhiteElo "1722"]
[BlackElo "1423"]
[PlyCount "35"]
[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. d4 d5 3. Nc3 Bb4 4. Nge2 dxe4 5. a3 Ba5 6. b4 Bb6 7. Nxe4 c6 8. Bf4 Bc7 9. Qd2 Ne7 10. N2g3 Ng6 11. Be3 0-0 12. Bd3 Qe7 13. h4 Rd8 14. h5 Nf8 15. h6 g6 16. Bg5 f6 17. Bxf6 Qd7 18. Bg7 1-0

[Event "Leiden Noteboom Memorial 69th"]
[Site "Leiden"]
[Date "2009.02.21"]
[Round "2"]
[White "Beetstra, Jaap"]
[Black "Roobol, Martin"]
[Result "0-1"]
[ECO "B50"]
[BlackElo "2329"]
[PlyCount "82"]
[EventDate "2009.02.07"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 128 Extra"]
[Source "ChessBase"]
[SourceDate "2009.03.05"]
[SourceVersion "2"]
[SourceVersionDate "2009.03.25"]
[SourceQuality "1"]

1. Nc3 g6 2. Nf3 Bg7 3. e4 d6 4. g3 c5 5. Bg2 Nc6 6. 0-0 e6 7. a3 Nge7 8. Rb1 a5 9. Ne2 e5 10. c3 f5 11. d3 0-0 12. a4 Kh8 13. Nh4 Be6 14. Bg5 Qd7 15. Qd2 d5 16. f3 Rae8 17. Bh3 Ng8 18. exf5 gxf5 19. Be3 d4 20. cxd4 cxd4 21. Bf2 Nf6 22. Bg2 Bd5 23. Bh3 Be6 24. Bg2 Rc8 25. Rfc1 Nb4 26. f4 Ng4 27. fxe5 Nxe5 28. Nf4 Bb3 29. Re1 Rc2 30. Qd1 Ng4 31. Re2 Re8 32. Rxe8+ Qxe8 33. Qe1 Qd7 34. Nxf5 Qxf5 35. Be4 Qc8 36. Qd1 Rxb2 37. Rc1 Rc2 38. Rxc2 Bxc2 39. Qa1 Nxf2 40. Kxf2 Qc3 41. Qf1 Qd2+ 0-1

[Event "Groningen SO ON Mini op"]
[Site "Groningen"]
[Date "2001.12.28"]
[Round "3"]
[White "Tuinstra, Thys"]
[Black "Beetstra, Jaap"]
[Result "1-0"]
[ECO "B01"]
[WhiteElo "1828"]
[BlackElo "1828"]
[PlyCount "55"]
[EventDate "2001.12.26"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "NED"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Nf6 3. d4 Bg4 4. Be2 Bxe2 5. Nxe2 Qxd5 6. 0-0 Nc6 7. Be3 0-0-0 8. Nd2 e5 9. c4 Qd6 10. d5 Ng4 11. Ng3 Nxe3 12. fxe3 Qc5 13. Qf3 Nb4 14. Nge4 Qb6 15. Rac1 Nd3 16. Rc3 Nc5 17. Rb1 Nxe4 18. Nxe4 Qg6 19. Rf1 f6 20. Rb3 Qe8 21. d6 Qc6 22. c5 Kb8 23. Rd1 cxd6 24. cxd6 f5 25. Qxf5 Qc2 26. Rbd3 Qxb2 27. Qf7 Bxd6 28. Rb3 1-0

[Event "Groningen SO ON op-B"]
[Site "Groningen"]
[Date "2000.??.??"]
[Round "3"]
[White "Beetstra, Jaap"]
[Black "Van den Berg, Harmen"]
[Result "1-0"]
[ECO "C15"]
[PlyCount "43"]
[EventDate "2000.12.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 dxe4 6. Qg4 Qf6 7. Qxe4 Ne7 8. Nf3 h6 9. Bd3 c5 10. Bb2 Nbc6 11. 0-0-0 b6 12. c4 Qf5 13. d5 Na5 14. dxe6 Qxe4 15. Bxe4 Nec6 16. exf7+ Kxf7 17. Ne5+ Nxe5 18. Bxa8 Naxc4 19. Bd5+ Kg6 20. Bc3 Ba6 21. Rhe1 Ng4 22. Re7 1-0

[Event "Groningen SO ON op-B"]
[Site "Groningen"]
[Date "2000.??.??"]
[Round "9"]
[White "Den Besten, Jaap"]
[Black "Beetstra, Jaap"]
[Result "0-1"]
[ECO "A46"]
[PlyCount "70"]
[EventDate "2000.12.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. Nf3 Nf6 2. d4 d6 3. Nc3 c6 4. Bg5 Nbd7 5. Qd2 h6 6. Bh4 g6 7. e4 Bg7 8. Bd3 0-0 9. Ne2 Qb6 10. c3 Re8 11. h3 e5 12. dxe5 dxe5 13. 0-0-0 Nc5 14. Qc2 Be6 15. Kb1 Nfxe4 16. Nc1 Nxd3 17. Rxd3 Nc5 18. Nd2 Nxd3 19. Qxd3 e4 20. Nxe4 Bf5 21. f3 Qa5 22. Nb3 Qd5 23. Kc2 Rxe4 24. Qxd5 Re5+ 25. Qd3 Re2+ 26. Nd2 Bxd3+ 27. Kxd3 Rxg2 28. Ne4 g5 29. Bf2 f5 30. Nf6+ Bxf6 31. Ke2 Be5 32. Kf1 Rh2 33. Rg1 Rd8 34. h4 Rd1+ 35. Be1 Bf4 0-1

[Event "Groningen SO ON op-B"]
[Site "Groningen"]
[Date "2000.??.??"]
[Round "4"]
[White "Nyman, Johan"]
[Black "Beetstra, Jaap"]
[Result "0-1"]
[ECO "C16"]
[PlyCount "120"]
[EventDate "2000.12.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 Qd7 5. f4 b6 6. Nf3 Nc6 7. a3 Bf8 8. Bd3 Bb7 9. 0-0 0-0-0 10. b4 f6 11. Qe2 Nh6 12. Be3 Nf5 13. Bf2 h5 14. exf6 gxf6 15. Rfe1 Ng7 16. Bb5 Bd6 17. g3 Qf7 18. Bxc6 Bxc6 19. b5 Bd7 20. Nh4 Rde8 21. Qf3 Kb8 22. a4 Bc8 23. a5 Bb7 24. axb6 cxb6 25. Ra4 Re7 26. Rea1 Ba8 27. Nd1 Rc8 28. Ne3 Rec7 29. Qe2 Bf8 30. R1a2 Rd7 31. f5 e5 32. Nf3 Re8 33. dxe5 fxe5 34. Ng5 Qg8 35. f6 d4 36. f7 Rxf7 37. Nxf7 Re7 38. Nc4 Qxf7 39. Nxb6 Bb7 40. Rxa7 Qe6 41. Ra8+ Kc7 42. Rxf8 Qxa2 43. Qc4+ Qxc4 44. Nxc4 Ne6 45. Rf5 e4 46. Rxh5 e3 47. Be1 Kb8 48. Rh8+ Ka7 49. Ba5 Bd5 50. Nd6 Bb7 51. Re8 Rxe8 52. Nxe8 Be4 53. Kf1 Bxc2 54. Ke2 Nc5 55. Nd6 Bd3+ 56. Ke1 Nb7 57. Nxb7 Kxb7 58. Bd8 Bxb5 59. Bf6 d3 60. Bg5 d2+ 0-1

[Event "Groningen SO ON op-B"]
[Site "Groningen"]
[Date "2000.??.??"]
[Round "7"]
[White "Pragt, Arjen"]
[Black "Beetstra, Jaap"]
[Result "1-0"]
[ECO "A52"]
[PlyCount "50"]
[EventDate "2000.12.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. Bf4 Nc6 5. Nf3 Bb4+ 6. Nbd2 f6 7. exf6 Qxf6 8. e3 Qxb2 9. Be2 d6 10. 0-0 Nge5 11. Rb1 Nxf3+ 12. Nxf3 Qa3 13. Ng5 Ne7 14. Qd4 Bc3 15. Qe4 d5 16. cxd5 Bf5 17. Qc4 Bxb1 18. d6 Bxa2 19. Qxc7 0-0 20. dxe7 Rfc8 21. Qd7 Bb4 22. Qf5 g6 23. Qh3 h5 24. Bxh5 Qc3 25. Bxg6 Kg7 1-0

[Event "Groningen ABM op"]
[Site "Groningen"]
[Date "1999.??.??"]
[Round "?"]
[White "Spanjersberg, Hans"]
[Black "Beetstra, Jaap"]
[Result "0-1"]
[ECO "A03"]
[PlyCount "58"]
[EventDate "1999.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. f4 e6 2. Nf3 d5 3. e3 Nf6 4. b3 Be7 5. Bb2 c5 6. Bb5+ Nbd7 7. Ne5 a6 8. Bxd7+ Nxd7 9. Nxd7 Bxd7 10. 0-0 f6 11. d3 Qc7 12. Nd2 0-0-0 13. Nf3 Rhg8 14. Qe2 Rdf8 15. g3 h6 16. Kf2 g5 17. Rg1 e5 18. Qd2 Bd6 19. fxg5 fxg5 20. Kg2 e4 21. dxe4 dxe4 22. Ne1 Bg4 23. Qd5 Qe7 24. h3 Be6 25. Qd2 Bb8 26. c4 Qc7 27. Kh2 Rf7 28. Rg2 Rgf8 29. Nc2 Rf2 0-1

