[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 "2018.07.21"]
[Round "8"]
[White "Vreeburg, Jan"]
[Black "Vergeer, Michiel"]
[Result "0-1"]
[ECO "D93"]
[WhiteElo "1924"]
[BlackElo "1848"]
[PlyCount "134"]
[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. d4 Nf6 2. Nf3 d5 3. c4 c6 4. Nc3 g6 5. Bf4 Bg7 6. e3 0-0 7. Bd3 Nbd7 8. 0-0 e6 9. Rc1 Nb6 10. c5 Nbd7 11. b4 Ne8 12. e4 dxe4 13. Nxe4 Ndf6 14. Qd2 Nd5 15. Bg3 f5 16. Nd6 f4 17. Bh4 Qc7 18. Nc4 Bd7 19. Nce5 Nef6 20. Rfe1 Rae8 21. a3 Bc8 22. Re2 Nd7 23. Rce1 Bf6 24. Bg5 Nxe5 25. dxe5 Bxg5 26. Nxg5 Qg7 27. Bc4 h6 28. Ne4 f3 29. gxf3 Rxf3 30. Bxd5 cxd5 31. Nf6+ Rxf6 32. exf6 Qxf6 33. Re5 Rf8 34. R1e2 Kg7 35. Qe3 Qf4 36. Qxf4 Rxf4 37. Rc2 Kf6 38. Re3 Bd7 39. Kg2 Bc6 40. Kg3 e5 41. Rce2 Rf5 42. f3 d4 43. Rb3 Bd5 44. Reb2 Bxb3 45. Rxb3 Ke6 46. Rb1 Kd5 47. Rc1 Rf6 48. b5 a6 49. a4 d3 50. Rd1 Kxc5 51. Rxd3 axb5 52. axb5 Rb6 53. Re3 Kd5 54. f4 exf4+ 55. Kxf4 Rf6+ 56. Kg4 Re6 57. Rc3 Re4+ 58. Kf3 Rb4 59. Rd3+ Ke5 60. Rd7 Rxb5 61. Rh7 h5 62. h4 Rb3+ 63. Kg2 b5 64. Rg7 Kf6 65. Rb7 Rb4 66. Kg3 Rg4+ 67. Kh3 b4 0-1

[Event "Leiden op-B 12th"]
[Site "Leiden"]
[Date "2018.07.20"]
[Round "7"]
[White "Liebert, Erwin"]
[Black "Vreeburg, Jan"]
[Result "1/2-1/2"]
[ECO "B07"]
[WhiteElo "1918"]
[BlackElo "1924"]
[PlyCount "36"]
[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. d4 Bg7 3. c3 d6 4. Nf3 Nf6 5. Bd3 Nbd7 6. 0-0 0-0 7. Re1 e5 8. Bg5 h6 9. Bh4 Qe8 10. Na3 a6 11. Qd2 Kh7 12. Rad1 b5 13. Nc2 c5 14. b3 Bb7 15. dxe5 Nxe5 16. Nxe5 dxe5 17. f3 Rd8 18. Qe3 Qc6 1/2-1/2

[Event "Leiden op-B 12th"]
[Site "Leiden"]
[Date "2018.07.19"]
[Round "6"]
[White "Vreeburg, Jan"]
[Black "Tamminga, Meile"]
[Result "1-0"]
[ECO "D37"]
[WhiteElo "1924"]
[BlackElo "1766"]
[PlyCount "81"]
[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. d4 d5 2. Nf3 Nf6 3. c4 e6 4. Nc3 Nbd7 5. Bf4 dxc4 6. Qa4 c6 7. Qxc4 Nb6 8. Qb3 Nbd5 9. Bg3 Bb4 10. Nd2 b5 11. e4 Nxc3 12. bxc3 Ba5 13. Be2 Bb7 14. 0-0 0-0 15. Rac1 a6 16. Rfd1 Bc7 17. e5 Nd7 18. Bf3 Qb8 19. Ne4 c5 20. Qc2 h6 21. a4 cxd4 22. cxd4 Bd8 23. Rb1 Bd5 24. Qb2 Be7 25. axb5 a5 26. Rdc1 Qb7 27. Nd6 Bxd6 28. Bxd5 Qxd5 29. exd6 Rfc8 30. Rc7 Nb6 31. Rbc1 Rxc7 32. dxc7 a4 33. Ra1 Qc4 34. Bd6 Qd3 35. Bc5 Nc4 36. Qb1 Qxb1+ 37. Rxb1 a3 38. b6 a2 39. Ra1 Nxb6 40. Bxb6 Kf8 41. Rxa2 1-0

[Event "Leiden op-B 12th"]
[Site "Leiden"]
[Date "2018.07.17"]
[Round "5"]
[White "Cchung, Nyuk Lyn"]
[Black "Vreeburg, Jan"]
[Result "1/2-1/2"]
[ECO "B09"]
[WhiteElo "1779"]
[BlackElo "1924"]
[PlyCount "76"]
[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. d4 Nf6 3. Nc3 g6 4. f4 Bg7 5. Nf3 0-0 6. Bd3 c5 7. dxc5 dxc5 8. 0-0 Nc6 9. Be3 b6 10. h3 Nb4 11. Qe2 Nxd3 12. cxd3 Ba6 13. Rfd1 e6 14. Rac1 Rc8 15. Qd2 Bb7 16. a3 Qe7 17. Bf2 Nd7 18. Qe2 Nb8 19. e5 Bd5 20. d4 Bxf3 21. Qxf3 cxd4 22. Bxd4 Nc6 23. Nb5 Nxd4 24. Nxd4 Rxc1 25. Rxc1 Qd7 26. Qc3 Re8 27. b4 Bf8 28. Nf3 Rd8 29. Ng5 Qd5 30. Kh1 Bh6 31. h4 Bxg5 32. hxg5 Kg7 33. Kh2 Qd4 34. Qf3 h6 35. gxh6+ Kxh6 36. Kg3 Qd2 37. Rc3 Rd4 38. Qe3 Qxe3+ 1/2-1/2

[Event "Leiden op-B 12th"]
[Site "Leiden"]
[Date "2018.07.16"]
[Round "4"]
[White "Vreeburg, Jan"]
[Black "Boeters, Stefan"]
[Result "0-1"]
[ECO "A54"]
[WhiteElo "1924"]
[BlackElo "1845"]
[PlyCount "46"]
[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. d4 Nf6 2. Nf3 d6 3. c4 Nbd7 4. Nc3 e5 5. d5 Be7 6. g3 0-0 7. Bg2 Ne8 8. e4 a5 9. Be3 b6 10. Nd2 Bg5 11. Qe2 Bxe3 12. Qxe3 Nc5 13. 0-0 f5 14. f4 exf4 15. Rxf4 Qe7 16. Re1 Bd7 17. Nf3 g5 18. Nxg5 Qxg5 19. Bh3 Ng7 20. Qd4 Rae8 21. e5 Rxe5 22. Rxe5 dxe5 23. Qxe5 Nd3 0-1

[Event "Leiden op-B 12th"]
[Site "Leiden"]
[Date "2018.07.15"]
[Round "3"]
[White "Lammers, Anton"]
[Black "Vreeburg, Jan"]
[Result "0-1"]
[ECO "B08"]
[WhiteElo "1756"]
[BlackElo "1924"]
[PlyCount "102"]
[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. d4 Bg7 3. Nf3 d6 4. Nc3 c6 5. a4 Nf6 6. h3 0-0 7. Bd3 Nbd7 8. Be3 Qc7 9. Qd2 e5 10. 0-0 b6 11. Bc4 Bb7 12. b4 Nxe4 13. Bxf7+ Rxf7 14. Nxe4 d5 15. Neg5 Re7 16. h4 Rf8 17. c3 e4 18. Nh2 Bc8 19. f3 Nf6 20. fxe4 Nxe4 21. Rxf8+ Bxf8 22. Nxe4 Rxe4 23. Nf3 Bf5 24. Re1 Bd6 25. Bf2 Qe7 26. Ng5 Rxe1+ 27. Qxe1 Qxe1+ 28. Bxe1 Bc2 29. a5 bxa5 30. bxa5 Bc7 31. c4 dxc4 32. Ne6 Bd6 33. Nd8 Be4 34. Nb7 Be7 35. Nc5 Bd5 36. g3 Kf7 37. Kf2 Kf6 38. a6 Bd8 39. Bd2 Kf5 40. Bf4 Bb6 41. Bd6 c3 42. Ke3 Bc4 43. Na4 c2 44. Kd2 Bxa6 45. Nc5 Bc4 46. Kxc2 Ba5 47. Kd1 Kg4 48. Nd7 Kf5 49. Nc5 Bc3 50. Be5 a5 51. Na4 Bb3+ 0-1

[Event "Leiden op-B 12th"]
[Site "Leiden"]
[Date "2018.07.14"]
[Round "2"]
[White "Vreeburg, Jan"]
[Black "Van Brussel, Bert"]
[Result "1/2-1/2"]
[ECO "D00"]
[WhiteElo "1924"]
[BlackElo "1810"]
[PlyCount "58"]
[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. d4 d5 2. Bf4 Nf6 3. e3 e6 4. c4 Bd6 5. Bxd6 cxd6 6. Nc3 dxc4 7. Bxc4 0-0 8. Nf3 a6 9. a4 b6 10. 0-0 Bb7 11. Rc1 Nbd7 12. Qe2 e5 13. dxe5 dxe5 14. Rfd1 Qe7 15. Nd5 Nxd5 16. Bxd5 Bxd5 17. Rxd5 e4 18. Nd2 Nc5 19. a5 Nd3 20. Rc4 Nxb2 21. Rxe4 Qa3 22. axb6 Rab8 23. g3 Rxb6 24. Kg2 Na4 25. Nc4 Qb4 26. Rdd4 Nc3 27. Nxb6 Qxb6 28. Qd3 Nxe4 29. Qxe4 Qa7 1/2-1/2

[Event "Leiden op-B 12th"]
[Site "Leiden"]
[Date "2018.07.13"]
[Round "1"]
[White "Kastelein, Gerard"]
[Black "Vreeburg, Jan"]
[Result "0-1"]
[ECO "A00"]
[WhiteElo "1755"]
[BlackElo "1924"]
[PlyCount "48"]
[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. Nc3 d5 2. e4 dxe4 3. Nxe4 Nf6 4. Qf3 Nbd7 5. d4 Nxe4 6. Qxe4 Nf6 7. Qe5 g6 8. Bc4 Bg7 9. Qb5+ c6 10. Qb3 0-0 11. Nf3 b5 12. Bxf7+ Rxf7 13. Ne5 Qd5 14. Nxf7 Kxf7 15. 0-0 Be6 16. Re1 Qf5 17. Qe3 Ng4 18. Qe2 Bxd4 19. Be3 Bxb2 20. Rad1 Bc3 21. Bd2 Bf6 22. h3 Ne5 23. Bc3 Nf3+ 24. gxf3 Bxc3 0-1

[Event "Leiden LCT op-A 11th"]
[Site "Leiden"]
[Date "2017.07.22"]
[Round "8"]
[White "Vreeburg, Jan"]
[Black "Van Halderen, Herman"]
[Result "0-1"]
[ECO "D37"]
[WhiteElo "1927"]
[BlackElo "2071"]
[PlyCount "104"]
[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 Nf6 2. Nf3 e6 3. c4 c5 4. e3 Be7 5. Nc3 0-0 6. Be2 d5 7. 0-0 dxc4 8. Bxc4 cxd4 9. Nxd4 a6 10. Qf3 Qc7 11. Bd3 Nbd7 12. Qe2 Rd8 13. Bd2 Nc5 14. Bc2 Bf8 15. b4 Ncd7 16. a3 Nb6 17. Bb3 e5 18. Nf3 e4 19. Ng5 Bg4 20. f3 exf3 21. gxf3 Bh5 22. Rac1 Qe5 23. e4 Rac8 24. Qe3 Nc4 25. Bxc4 Rxc4 26. Ne2 Rxc1 27. Bxc1 h6 28. Nh3 a5 29. Bd2 axb4 30. Bxb4 Bxb4 31. axb4 Qb5 32. Nhf4 g5 33. Qc3 Qb6+ 34. Kh1 gxf4 35. Rg1+ Kh7 36. Nxf4 Qd4 37. Qb3 Rd7 38. Nxh5 Nxh5 39. Qc2 Qd3 40. Qg2 Rd8 41. Qg4 Qb5 42. f4 Qxb4 43. Qf5+ Kh8 44. Qe5+ f6 45. Qxh5 Qxe4+ 46. Rg2 Qxf4 47. h3 Qc1+ 48. Kh2 Qc7+ 49. Kh1 Qh7 50. Rg6 Rd1+ 51. Kg2 Rd5 52. Qg4 Qxg6 0-1

[Event "Leiden LCT op-A 11th"]
[Site "Leiden"]
[Date "2017.07.18"]
[Round "5"]
[White "Vreeburg, Jan"]
[Black "Van der Velden, Bram"]
[Result "0-1"]
[ECO "D00"]
[WhiteElo "1927"]
[BlackElo "2170"]
[PlyCount "54"]
[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 Nf6 2. Nf3 g6 3. Nc3 d5 4. Bg5 Bg7 5. e3 Ne4 6. Nxe4 dxe4 7. Nd2 h6 8. Bf4 f5 9. Bc4 e6 10. c3 0-0 11. Qb3 Qe7 12. d5 g5 13. Bg3 f4 14. exf4 gxf4 15. Nxe4 fxg3 16. hxg3 exd5 17. Bxd5+ Kh8 18. Bxb7 c6 19. Bxa8 Qxe4+ 20. Kf1 Qf5 21. f3 Qd3+ 22. Kf2 Qd2+ 23. Kf1 Ba6+ 24. Kg1 Nd7 25. Rd1 Qe3+ 26. Kh2 Rf5 27. g4 Be5+ 0-1

[Event "Leiden LCT op-A 11th"]
[Site "Leiden"]
[Date "2017.07.17"]
[Round "4"]
[White "Tomov, Georgi"]
[Black "Vreeburg, Jan"]
[Result "1-0"]
[ECO "B06"]
[WhiteElo "2273"]
[BlackElo "1927"]
[PlyCount "37"]
[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 g6 2. d4 Bg7 3. Nf3 d6 4. Bc4 Nf6 5. Qe2 Nc6 6. h3 e5 7. dxe5 Nxe5 8. Nxe5 dxe5 9. 0-0 0-0 10. b3 Qd4 11. Ba3 Qxa1 12. c3 Nxe4 13. Bxf8 Kxf8 14. Qxe4 c6 15. Qf3 f6 16. Qd3 Bf5 17. Qd6+ Ke8 18. Rd1 h5 19. Qc7 1-0

[Event "Leiden LCT op-A 11th"]
[Site "Leiden"]
[Date "2017.07.16"]
[Round "3"]
[White "Vreeburg, Jan"]
[Black "Vrolijk, Liam"]
[Result "0-1"]
[ECO "E92"]
[WhiteElo "1927"]
[BlackElo "2419"]
[PlyCount "68"]
[EventDate "2017.07.14"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 179 Extra"]
[Source "ChessBase"]
[SourceDate "2017.08.23"]
[SourceVersion "1"]
[SourceVersionDate "2017.08.23"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. Nc3 0-0 5. e4 d6 6. Be2 e5 7. dxe5 dxe5 8. Qxd8 Rxd8 9. Bg5 Re8 10. Rd1 Na6 11. Nd2 c6 12. 0-0 Nc5 13. Be3 Ne6 14. c5 Nd4 15. f3 Nd7 16. Nb3 Nxe2+ 17. Nxe2 b6 18. Nc3 Bf8 19. cxb6 axb6 20. a3 Nf6 21. Rd2 Be6 22. Nc1 Nd7 23. Nd3 f6 24. Rc1 Rec8 25. f4 Bc4 26. Nxe5 Nxe5 27. fxe5 fxe5 28. Rcd1 Bb3 29. Rf1 b5 30. Ne2 Rd8 31. Rxd8 Rxd8 32. Rc1 Bc4 33. Nc3 Rd3 34. Kf2 Rxe3 0-1

[Event "Leiden LCT op-A 11th"]
[Site "Leiden"]
[Date "2017.07.15"]
[Round "2"]
[White "Buckels, Valentin"]
[Black "Vreeburg, Jan"]
[Result "0-1"]
[ECO "A59"]
[WhiteElo "2332"]
[BlackElo "1927"]
[PlyCount "52"]
[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 Nf6 2. c4 c5 3. d5 b5 4. cxb5 a6 5. bxa6 Bxa6 6. Nc3 g6 7. Nf3 d6 8. e4 Bxf1 9. Kxf1 Bg7 10. g3 0-0 11. Kg2 Nbd7 12. a4 Nb6 13. Qe2 Qd7 14. a5 Rfb8 15. Bf4 Nc8 16. Rhb1 Rb4 17. e5 Rxf4 18. e6 fxe6 19. dxe6 Qc6 20. gxf4 Nh5 21. Qe3 d5 22. Rc1 Nd6 23. Ne5 Bxe5 24. fxe5 d4+ 25. Qf3 Nf4+ 26. Kg3 Nf5+ 0-1

[Event "Leiden op-A 10th"]
[Site "Leiden"]
[Date "2016.07.22"]
[Round "7"]
[White "Vreeburg, Jan"]
[Black "Plukkel, Sjoerd"]
[Result "0-1"]
[ECO "A58"]
[WhiteElo "1927"]
[BlackElo "2304"]
[PlyCount "58"]
[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. d4 Nf6 2. Nf3 c5 3. d5 g6 4. c4 b5 5. cxb5 a6 6. bxa6 Bxa6 7. Nc3 Bg7 8. g3 d6 9. Bg2 0-0 10. 0-0 Nbd7 11. Re1 Qc7 12. Qc2 Rfb8 13. h3 Rb4 14. e4 Rab8 15. Rb1 Ne8 16. a3 R4b7 17. Be3 Qa5 18. Bd2 Bc4 19. Nd1 Qb5 20. Bf1 Bxf1 21. Rxf1 Qb3 22. Qxb3 Rxb3 23. Kg2 Rxa3 24. Bg5 Rab3 25. Nd2 Rd3 26. Nc4 Rb4 27. Nde3 f6 28. Ra1 fxg5 29. Ra7 Nef6 0-1

[Event "Leiden op-A 10th"]
[Site "Leiden"]
[Date "2016.07.18"]
[Round "4"]
[White "Vistisen, Lars"]
[Black "Vreeburg, Jan"]
[Result "1-0"]
[ECO "B73"]
[WhiteElo "2162"]
[BlackElo "1927"]
[PlyCount "67"]
[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 g6 2. d4 Bg7 3. Nc3 c5 4. Nf3 cxd4 5. Nxd4 d6 6. Be3 Nc6 7. Be2 Nf6 8. 0-0 0-0 9. h3 Bd7 10. Qd2 Nxd4 11. Bxd4 Bc6 12. Bf3 a6 13. a4 Nd7 14. Bxg7 Kxg7 15. Qd4+ f6 16. Bg4 Qb6 17. Qd2 Ne5 18. Be6 Qc5 19. b3 Rad8 20. Rad1 Bd7 21. Bxd7 Rxd7 22. Nd5 e6 23. Nf4 Kf7 24. c4 g5 25. Ne2 Rg8 26. Nd4 Ng6 27. g3 h5 28. Qe2 h4 29. Kg2 Qe5 30. Qg4 Nf4+ 31. Kh2 hxg3+ 32. fxg3 Ng6 33. Rd2 Kg7 34. Nxe6+ 1-0

[Event "Leiden op-A 9th"]
[Site "Leiden"]
[Date "2015.07.25"]
[Round "8"]
[White "Knudsen, Martin"]
[Black "Vreeburg, Jan"]
[Result "1-0"]
[ECO "E14"]
[WhiteElo "2026"]
[BlackElo "1901"]
[PlyCount "93"]
[EventDate "2015.07.17"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 167 Extra"]
[Source "ChessBase"]
[SourceDate "2015.09.14"]
[SourceVersion "1"]
[SourceVersionDate "2015.09.14"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. e3 Bb7 5. Bd3 Nc6 6. a3 d5 7. Nc3 Bd6 8. 0-0 Ne7 9. Nb5 Ne4 10. Qc2 Ng6 11. Nxd6+ Qxd6 12. b3 0-0 13. a4 Rfc8 14. a5 a6 15. Bb2 f5 16. Rfc1 Qc6 17. Qe2 Qd6 18. Rc2 dxc4 19. bxc4 c5 20. Nd2 cxd4 21. Bxe4 fxe4 22. Bxd4 b5 23. Rb2 Bc6 24. Qg4 e5 25. Bb6 Qd3 26. cxb5 Bxb5 27. Qxe4 Qc3 28. Qb1 Bd3 29. Qa2+ Kh8 30. h3 Bb5 31. Qa3 Qxa3 32. Rxa3 Kg8 33. Ne4 Rc1+ 34. Kh2 Rf8 35. Rc3 Rd1 36. Bc5 Rfd8 37. Bb6 Rf8 38. f3 Rd7 39. Nc5 Rd6 40. Ne4 Rd1 41. Rd2 Rxd2 42. Nxd2 Re8 43. Ne4 Bf1 44. Kg1 Be2 45. Kf2 Bd1 46. Nc5 e4 47. Rc1 1-0

[Event "Leiden op-A 9th"]
[Site "Leiden"]
[Date "2015.07.24"]
[Round "7"]
[White "Vreeburg, Jan"]
[Black "Heemskerk, Wim"]
[Result "0-1"]
[ECO "E43"]
[WhiteElo "1901"]
[BlackElo "2175"]
[PlyCount "60"]
[EventDate "2015.07.17"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 167 Extra"]
[Source "ChessBase"]
[SourceDate "2015.09.14"]
[SourceVersion "1"]
[SourceVersionDate "2015.09.14"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 e6 3. c4 b6 4. Nc3 Bb4 5. e3 Ne4 6. Qc2 Bb7 7. Bd3 f5 8. Bd2 Nxd2 9. Kxd2 Bxf3 10. gxf3 Qh4 11. Ke2 0-0 12. Rag1 Nc6 13. Rg2 Rf7 14. Rhg1 Bd6 15. a3 Re8 16. Kd1 Kh8 17. Nb5 a6 18. Nxd6 cxd6 19. f4 e5 20. fxe5 dxe5 21. d5 Ne7 22. f3 Rc8 23. Qf2 Qf6 24. h4 b5 25. cxb5 Nxd5 26. bxa6 Qb6 27. Re1 Qb3+ 28. Ke2 f4 29. Rd1 fxe3 30. Qg3 Nf4+ 0-1

[Event "Leiden op-A 9th"]
[Site "Leiden"]
[Date "2015.07.23"]
[Round "6"]
[White "Gindi, Shachar"]
[Black "Vreeburg, Jan"]
[Result "1-0"]
[ECO "B08"]
[WhiteElo "2336"]
[BlackElo "1901"]
[PlyCount "99"]
[EventDate "2015.07.17"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 167 Extra"]
[Source "ChessBase"]
[SourceDate "2015.09.14"]
[SourceVersion "1"]
[SourceVersionDate "2015.09.14"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nc3 d6 4. Nf3 Nf6 5. Be3 0-0 6. Qd2 Nbd7 7. Bh6 e5 8. 0-0-0 Qe7 9. h4 Bxh6 10. Qxh6 Ng4 11. Qd2 Nb6 12. h5 Qf6 13. d5 Bd7 14. Rh4 Qf4 15. Bb5 Qxd2+ 16. Rxd2 Nf6 17. Bxd7 Nbxd7 18. g4 Nc5 19. Re2 c6 20. Nd2 g5 21. Rh1 h6 22. f3 cxd5 23. exd5 a6 24. Nc4 Rad8 25. b4 Na4 26. Nxa4 b5 27. Ne3 bxa4 28. c4 Kg7 29. Kc2 Rfe8 30. Rf2 e4 31. f4 Nd7 32. fxg5 Ne5 33. gxh6+ Kxh6 34. Rf6+ Kh7 35. g5 Kg8 36. Nf5 Ng4 37. Rxd6 Ne3+ 38. Nxe3 Rxd6 39. c5 Rdd8 40. Kc3 Re5 41. Rg1 Kf8 42. Kd4 f6 43. Rf1 Rxg5 44. Rxf6+ Ke7 45. Re6+ Kf7 46. Re5 Rg1 47. c6 Rc1 48. Nc4 e3 49. c7 Rd1+ 50. Kxe3 1-0

[Event "Leiden op-A 9th"]
[Site "Leiden"]
[Date "2015.07.20"]
[Round "4"]
[White "Kolodkin, Daniil"]
[Black "Vreeburg, Jan"]
[Result "0-1"]
[ECO "B08"]
[WhiteElo "2208"]
[BlackElo "1901"]
[PlyCount "68"]
[EventDate "2015.07.17"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 167 Extra"]
[Source "ChessBase"]
[SourceDate "2015.09.14"]
[SourceVersion "1"]
[SourceVersionDate "2015.09.14"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nf3 d6 4. Nc3 Nf6 5. Be2 0-0 6. 0-0 e5 7. Bg5 Qe8 8. Re1 c6 9. d5 c5 10. Nd2 h6 11. Be3 Qe7 12. Nc4 Nbd7 13. Qd2 Kh7 14. a4 Nb6 15. Na3 Bd7 16. a5 Na4 17. Nxa4 Bxa4 18. f3 Bd7 19. Nc4 Ng8 20. b4 Bb5 21. bxc5 dxc5 22. Reb1 Bxc4 23. Bxc4 Rfd8 24. Rb5 Rac8 25. Rab1 Rd7 26. Qf2 Bf8 27. Bf1 Nf6 28. g3 Rcc7 29. Bh3 Rd8 30. R1b3 Rb8 31. Rc3 b6 32. Rcb3 Rcb7 33. d6 Qxd6 34. Bxc5 Qd1+ 0-1

[Event "Leiden op-A 9th"]
[Site "Leiden"]
[Date "2015.07.19"]
[Round "3"]
[White "Vreeburg, Jan"]
[Black "Bebchuk, Leonid"]
[Result "1-0"]
[ECO "D37"]
[WhiteElo "1901"]
[BlackElo "2072"]
[PlyCount "79"]
[EventDate "2015.07.17"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 167 Extra"]
[Source "ChessBase"]
[SourceDate "2015.09.14"]
[SourceVersion "1"]
[SourceVersionDate "2015.09.14"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 d5 3. c4 e6 4. Nc3 Be7 5. Bf4 0-0 6. e3 c6 7. Bd3 Nbd7 8. Qc2 dxc4 9. Bxc4 Nb6 10. Bb3 Nbd5 11. Bg3 b6 12. 0-0 Bb7 13. Rfd1 Nh5 14. Be5 f6 15. Nxd5 exd5 16. Bg3 Nxg3 17. hxg3 Kh8 18. Rac1 Bd6 19. Qd3 Re8 20. Bc2 g6 21. Nh4 Qe7 22. Qe2 f5 23. Ba4 Rac8 24. Bc2 Qf6 25. Nf3 Rc7 26. Qd3 Rce7 27. Ba4 b5 28. Bc2 Bc8 29. a4 b4 30. a5 Bc7 31. Ba4 Re6 32. Rc5 g5 33. Rdc1 Bb7 34. a6 Ba8 35. Rxd5 cxd5 36. Bxe8 Qd8 37. Bf7 Rc6 38. Rxc6 Bxc6 39. Qxf5 Qd7 40. Qf6# 1-0

[Event "Leiden op-A 9th"]
[Site "Leiden"]
[Date "2015.07.18"]
[Round "2"]
[White "Van der Elburg, Freddie"]
[Black "Vreeburg, Jan"]
[Result "1-0"]
[ECO "A03"]
[WhiteElo "2185"]
[BlackElo "1901"]
[PlyCount "69"]
[EventDate "2015.07.17"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 167 Extra"]
[Source "ChessBase"]
[SourceDate "2015.09.14"]
[SourceVersion "1"]
[SourceVersionDate "2015.09.14"]
[SourceQuality "1"]

1. f4 d5 2. Nf3 c5 3. g3 Nc6 4. Bg2 g6 5. 0-0 Bg7 6. d3 Nf6 7. c3 0-0 8. Na3 Bd7 9. Qe1 e6 10. e4 dxe4 11. dxe4 Ne7 12. Ne5 a6 13. Be3 Qc7 14. Qf2 b6 15. Nac4 Bb5 16. h3 Rac8 17. a4 Bxc4 18. Nxc4 Nd7 19. Rfd1 Rfd8 20. a5 b5 21. Nd6 Rb8 22. g4 Bf8 23. e5 Nc6 24. Bxc5 Ncxe5 25. Bb6 Nxb6 26. axb6 Rxb6 27. fxe5 Bg7 28. Rf1 Rf8 29. g5 Bxe5 30. Ne4 Rbb8 31. Rxa6 b4 32. Ra7 Qb6 33. Qxb6 Rxb6 34. Nf6+ Kg7 35. Nd7 1-0

[Event "Leiden LCT op-A 7th"]
[Site "Leiden"]
[Date "2013.07.21"]
[Round "9"]
[White "Van Calmthout, Hans"]
[Black "Vreeburg, Jan"]
[Result "1/2-1/2"]
[ECO "D02"]
[BlackElo "1922"]
[PlyCount "36"]
[EventDate "2013.07.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 155 Extra"]
[Source "ChessBase"]
[SourceDate "2013.08.26"]
[SourceVersion "1"]
[SourceVersionDate "2013.08.26"]
[SourceQuality "1"]

1. Nf3 d5 2. d4 Nf6 3. Bf4 e6 4. e3 c5 5. c3 Nc6 6. Nbd2 Bd6 7. Ne5 0-0 8. Bd3 Qc7 9. Ndf3 Ne4 10. 0-0 f6 11. Nxc6 Bxf4 12. Ne7+ Qxe7 13. exf4 b6 14. Re1 Bb7 15. Nd2 cxd4 16. cxd4 f5 17. a3 Nxd2 18. Qxd2 Rac8 1/2-1/2

[Event "Leiden LCT op-A 7th"]
[Site "Leiden"]
[Date "2013.07.20"]
[Round "8"]
[White "Vreeburg, Jan"]
[Black "Koes, Richard"]
[Result "1-0"]
[ECO "E90"]
[WhiteElo "1922"]
[BlackElo "1919"]
[PlyCount "101"]
[EventDate "2013.07.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 155 Extra"]
[Source "ChessBase"]
[SourceDate "2013.08.26"]
[SourceVersion "1"]
[SourceVersionDate "2013.08.26"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. Nc3 0-0 5. e4 d6 6. h3 Nc6 7. Bg5 a6 8. Be2 h6 9. Be3 e5 10. d5 Ne7 11. Qd2 Kh7 12. Nh2 b5 13. cxb5 axb5 14. Bxb5 Ba6 15. Bxa6 Rxa6 16. g4 Qd7 17. Nf1 c6 18. dxc6 Qxc6 19. Ng3 d5 20. exd5 Nfxd5 21. Nxd5 Nxd5 22. 0-0 Nxe3 23. fxe3 e4 24. Rac1 Qe6 25. b3 Rd6 26. Qg2 f5 27. gxf5 gxf5 28. Rc7 Rd7 29. Rxd7 Qxd7 30. Kh1 Qe6 31. Nh5 Be5 32. Rg1 Qf7 33. Ng3 Rg8 34. Qf2 f4 35. exf4 Bxf4 36. Nxe4 Rxg1+ 37. Kxg1 Qg6+ 38. Qg2 Be3+ 39. Kh1 Qf5 40. Ng3 Qb1+ 41. Qf1 Qg6 42. Qf5 Bc1 43. Qxg6+ Kxg6 44. Kg2 Ba3 45. Ne2 Kg5 46. Nd4 Kf4 47. Nc2 Bd6 48. a4 Ke4 49. a5 Kd3 50. a6 Bb8 51. Nb4+ 1-0

[Event "Leiden LCT op-A 7th"]
[Site "Leiden"]
[Date "2013.07.19"]
[Round "7"]
[White "Kubbenga, Michael"]
[Black "Vreeburg, Jan"]
[Result "1-0"]
[ECO "D36"]
[WhiteElo "1955"]
[BlackElo "1922"]
[PlyCount "95"]
[EventDate "2013.07.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 155 Extra"]
[Source "ChessBase"]
[SourceDate "2013.08.26"]
[SourceVersion "1"]
[SourceVersionDate "2013.08.26"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. cxd5 exd5 5. Bg5 Be7 6. e3 c6 7. Qc2 h6 8. Bh4 0-0 9. Bd3 Nbd7 10. Nge2 Ne8 11. Bxe7 Qxe7 12. Ng3 Ndf6 13. 0-0 Nd6 14. b4 Bd7 15. a4 a6 16. Rfb1 b5 17. Bf5 Nxf5 18. Nxf5 Qe6 19. Ng3 Rfc8 20. a5 Re8 21. Nce2 Ne4 22. Nxe4 Qxe4 23. Qxe4 Rxe4 24. Rc1 g5 25. Rc3 Kf8 26. Nc1 Re6 27. Nd3 Ke7 28. Rac1 Rd6 29. f3 f5 30. f4 g4 31. Ne5 Rc8 32. Kf2 Be8 33. h3 gxh3 34. gxh3 Rf6 35. Rg1 Bf7 36. Rcc1 Ke8 37. Rg7 Ke7 38. Rcg1 Ke6 39. Rh7 Rf8 40. Rgg7 Ke7 41. Ng6+ Ke8 42. Nxf8 Kxf8 43. Rg1 Ke7 44. Rh8 Kd6 45. Ra8 Kc7 46. Rxa6 Kb7 47. Rb6+ Kc8 48. a6 1-0

[Event "Leiden LCT op-A 7th"]
[Site "Leiden"]
[Date "2013.07.18"]
[Round "6"]
[White "Vreeburg, Jan"]
[Black "Kouwenhoven, Arjen"]
[Result "0-1"]
[ECO "A73"]
[WhiteElo "1922"]
[BlackElo "2004"]
[PlyCount "104"]
[EventDate "2013.07.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 155 Extra"]
[Source "ChessBase"]
[SourceDate "2013.08.26"]
[SourceVersion "1"]
[SourceVersionDate "2013.08.26"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 e6 3. c4 c5 4. d5 exd5 5. cxd5 d6 6. Nc3 g6 7. e4 Bg7 8. Be2 0-0 9. 0-0 a6 10. a4 Bg4 11. Nd2 Bxe2 12. Qxe2 Re8 13. f3 Nbd7 14. Nc4 Nb6 15. Bg5 h6 16. Bh4 Nxc4 17. Qxc4 Qb6 18. Rab1 Nd7 19. f4 Qb4 20. Qd3 Qd4+ 21. Qxd4 cxd4 22. Nd1 Rxe4 23. Nf2 Re2 24. Rfc1 Nc5 25. Re1 Rae8 26. Rxe2 Rxe2 27. Kf1 Re3 28. Re1 Rxe1+ 29. Kxe1 Nxa4 30. b3 Nb6 31. Be7 Nc8 32. Bd8 Kf8 33. Ne4 f5 34. Nd2 Ke8 35. Ba5 b5 36. Ke2 Ne7 37. Kd3 Nxd5 38. g3 Kd7 39. Nf3 Ne7 40. Bb6 Nc6 41. Nh4 Nb4+ 42. Kd2 Nd5 43. Ba5 Ne7 44. Kd3 Bf6 45. Nf3 Nc6 46. Bb6 Ke6 47. Bc7 Kd5 48. Nd2 Nb4+ 49. Ke2 d3+ 50. Ke3 Bd4+ 51. Kf3 Nc2 52. Nb1 Ne1# 0-1

[Event "Leiden LCT op-A 7th"]
[Site "Leiden"]
[Date "2013.07.16"]
[Round "5"]
[White "Orlova, Yelizaveta"]
[Black "Vreeburg, Jan"]
[Result "1/2-1/2"]
[ECO "A01"]
[WhiteElo "1942"]
[BlackElo "1922"]
[PlyCount "36"]
[EventDate "2013.07.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 155 Extra"]
[Source "ChessBase"]
[SourceDate "2013.08.26"]
[SourceVersion "1"]
[SourceVersionDate "2013.08.26"]
[SourceQuality "1"]

1. b3 e5 2. Bb2 Nc6 3. e3 Nf6 4. Ne2 d5 5. d4 Bd6 6. Nd2 Bf5 7. a3 exd4 8. Nxd4 Nxd4 9. Bxd4 0-0 10. Be2 Qe7 11. a4 c5 12. Bb2 Rfe8 13. Bb5 Red8 14. 0-0 Ne4 15. Nxe4 dxe4 16. Qh5 Bg6 17. Qh3 Be5 18. Bxe5 Qxe5 1/2-1/2

[Event "Leiden LCT op-A 7th"]
[Site "Leiden"]
[Date "2013.07.15"]
[Round "4"]
[White "Van Zetten, Maarten"]
[Black "Vreeburg, Jan"]
[Result "1-0"]
[ECO "D30"]
[WhiteElo "2044"]
[BlackElo "1922"]
[PlyCount "53"]
[EventDate "2013.07.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Qc2 e6 5. g3 Nbd7 6. Nbd2 c5 7. Bg2 Qb6 8. cxd5 exd5 9. 0-0 Be7 10. e4 dxe4 11. Nxe4 0-0 12. dxc5 Bxc5 13. Nxc5 Qxc5 14. Qxc5 Nxc5 15. Be3 Ne6 16. Ne5 Re8 17. Rfd1 Nf8 18. Nc4 Ne4 19. Rac1 Bd7 20. Rd4 Bc6 21. Na5 f5 22. Nxc6 bxc6 23. Rxc6 Ne6 24. Rb4 Nd8 25. Ra6 Re7 26. Bxe4 fxe4 27. Raa4 1-0

[Event "Leiden LCT op-A 7th"]
[Site "Leiden"]
[Date "2013.07.14"]
[Round "3"]
[White "Vreeburg, Jan"]
[Black "Roorda, Thijs"]
[Result "1/2-1/2"]
[ECO "A40"]
[WhiteElo "1922"]
[BlackElo "2088"]
[PlyCount "39"]
[EventDate "2013.07.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 155 Extra"]
[Source "ChessBase"]
[SourceDate "2013.08.26"]
[SourceVersion "1"]
[SourceVersionDate "2013.08.26"]
[SourceQuality "1"]

1. d4 e6 2. c4 b6 3. Nf3 Bb7 4. Nc3 f5 5. g3 Bxf3 6. exf3 Nf6 7. Bg2 d5 8. 0-0 Be7 9. Qe2 Kf7 10. Re1 Qd7 11. Bf4 Nc6 12. Rad1 Rhe8 13. Nb5 Bd8 14. Be5 Na5 15. b3 Nb7 16. Nc3 c6 17. g4 g6 18. Qd2 Qe7 19. Qh6 Qf8 20. Qxf8+ 1/2-1/2

[Event "Leiden LCT op-A 7th"]
[Site "Leiden"]
[Date "2013.07.13"]
[Round "2"]
[White "Kerkvliet, Maximiliaan"]
[Black "Vreeburg, Jan"]
[Result "1/2-1/2"]
[ECO "D53"]
[WhiteElo "2042"]
[BlackElo "1922"]
[PlyCount "122"]
[EventDate "2013.07.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 155 Extra"]
[Source "ChessBase"]
[SourceDate "2013.08.26"]
[SourceVersion "1"]
[SourceVersionDate "2013.08.26"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 d5 3. c4 c6 4. Nc3 e6 5. Bg5 Be7 6. e3 Nbd7 7. Bd3 dxc4 8. Bxc4 b5 9. Be2 a6 10. Nd2 Bb7 11. Bf3 e5 12. Bxf6 Bxf6 13. Nde4 0-0 14. Nd6 Qc7 15. Nxb7 Qxb7 16. d5 Nb8 17. dxc6 Nxc6 18. Qd6 Rac8 19. Nd5 Be7 20. Nxe7+ Qxe7 21. Rd1 Rfd8 22. Qxe7 Rxd1+ 23. Kxd1 Nxe7 24. Bb7 Rd8+ 25. Ke2 a5 26. Rd1 Rxd1 27. Kxd1 Kf8 28. Ba6 b4 29. Kc2 Nd5 30. Kd3 Nb6 31. Ke4 f6 32. Bb5 Ke7 33. h4 Ke6 34. g4 g6 35. g5 f5+ 36. Kd3 Kd6 37. Be8 Ke7 38. Bb5 Kd6 39. Bc4 Nd5 40. f3 Kc5 41. b3 Kd6 42. e4 Nf4+ 43. Ke3 Ke7 44. Ba6 Ne6 45. exf5 gxf5 46. Bd3 Ng7 47. h5 Nxh5 48. Bxf5 Nf4 49. Bxh7 Ne6 50. g6 Kf6 51. Bg8 Nf4 52. Ke4 Nxg6 53. Bh7 Nf4 54. Bf5 Ne2 55. Bc8 Nc3+ 56. Kd3 Nxa2 57. Kc4 Nc1 58. Bb7 Kf5 59. Bd5 Kf4 60. Kb5 Nxb3 61. Bxb3 Kxf3 1/2-1/2

[Event "Leiden LCT op-A 7th"]
[Site "Leiden"]
[Date "2013.07.12"]
[Round "1"]
[White "Vreeburg, Jan"]
[Black "Van 't Hof, Eric"]
[Result "0-1"]
[ECO "D45"]
[WhiteElo "1922"]
[BlackElo "2144"]
[PlyCount "44"]
[EventDate "2013.07.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 155 Extra"]
[Source "ChessBase"]
[SourceDate "2013.08.26"]
[SourceVersion "1"]
[SourceVersionDate "2013.08.26"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 d5 3. c4 c6 4. Nc3 e6 5. e3 Be7 6. Bd3 dxc4 7. Bxc4 b5 8. Bd3 a6 9. 0-0 Bb7 10. Qe2 Nbd7 11. Rd1 Qc7 12. b3 c5 13. Bb2 Rc8 14. Rac1 Qb8 15. e4 cxd4 16. Nxd4 0-0 17. a3 Bd6 18. g3 Bc5 19. Nc2 Ne5 20. b4 Ba7 21. h3 Nc4 22. Ba1 Qxg3+ 0-1

[Event "Leiden LCT op-A 6th"]
[Site "Leiden"]
[Date "2012.07.08"]
[Round "2"]
[White "Van der Wiel, John"]
[Black "Vreeburg, Jan"]
[Result "1-0"]
[ECO "A43"]
[WhiteElo "2430"]
[BlackElo "1938"]
[PlyCount "67"]
[EventDate "2012.07.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 149 Extra"]
[Source "ChessBase"]
[SourceDate "2012.08.24"]
[SourceVersion "1"]
[SourceVersionDate "2012.08.24"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nc3 c5 4. d5 d6 5. Bb5+ Nd7 6. a4 a6 7. Be2 b6 8. Nf3 Ngf6 9. h3 0-0 10. Bf4 Qc7 11. 0-0 Bb7 12. Bh2 Rad8 13. Bc4 Ne5 14. Nxe5 dxe5 15. Qe2 Ra8 16. Nd1 Nh5 17. Ne3 Nf4 18. Qf3 Kh8 19. Rfd1 Qd7 20. c3 b5 21. Bf1 Qd6 22. axb5 axb5 23. g3 Nh5 24. Bxb5 Rxa1 25. Rxa1 Qb6 26. Qe2 Rb8 27. Bd3 Bc8 28. Kg2 Qc7 29. Nc4 Qd7 30. g4 Nf4+ 31. Bxf4 exf4 32. f3 h5 33. Qf2 g5 34. Qxc5 1-0

