[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2013.07.02"]
[Round "7"]
[White "Kettenis, John"]
[Black "Verheijen, Jan"]
[Result "0-1"]
[ECO "B13"]
[PlyCount "50"]
[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. Nf3 c5 2. e3 Nc6 3. d4 cxd4 4. exd4 d5 5. a3 Nf6 6. Bd3 Bg4 7. Nbd2 Nxd4 8. h3 Bxf3 9. Nxf3 Nxf3+ 10. Qxf3 a6 11. 0-0 e6 12. Re1 Be7 13. Bf4 0-0 14. Rad1 Rc8 15. g4 Nd7 16. b4 Re8 17. Qg3 Bh4 18. Qg2 Qf6 19. Be3 Ne5 20. f4 Nxd3 21. cxd3 Bxe1 22. Rxe1 Rc3 23. Qf2 Rxd3 24. g5 Qf5 25. Qh4 d4 0-1

[Event "Haarlem Nova College op-C 12th"]
[Site "Haarlem"]
[Date "2013.06.29"]
[Round "4"]
[White "Kaptein, Peter"]
[Black "Verheijen, Jan"]
[Result "1-0"]
[ECO "A51"]
[PlyCount "63"]
[EventDate "2013.06.28"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e5 3. e3 exd4 4. exd4 Bb4+ 5. Bd2 Qe7+ 6. Be2 0-0 7. Nf3 d5 8. 0-0 Nc6 9. Nc3 dxc4 10. Bxc4 Bg4 11. Be2 Rad8 12. Be3 Rfe8 13. Qd3 Bxc3 14. bxc3 Nd5 15. Ng5 f5 16. Bxg4 Nxe3 17. fxe3 Qxg5 18. Qc4+ Kh8 19. Bxf5 Qxe3+ 20. Kh1 Re7 21. h3 Qd2 22. Bg4 h6 23. Qc5 Qd3 24. Rf3 Qc2 25. Raf1 Qxa2 26. Rf8+ Rxf8 27. Rxf8+ Kh7 28. Qf5+ g6 29. Qf6 Rg7 30. Be6 Qa1+ 31. Kh2 Ne7 32. Rf7 1-0

[Event "Haarlem Nova College op-C 12th"]
[Site "Haarlem"]
[Date "2013.06.29"]
[Round "3"]
[White "Lingbeek, Olivier"]
[Black "Verheijen, Jan"]
[Result "0-1"]
[ECO "B21"]
[PlyCount "104"]
[EventDate "2013.06.28"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 e6 5. Bf4 Bb4 6. Bc4 Qf6 7. Bd2 Qg6 8. Qf3 Nc6 9. 0-0-0 Ne5 10. Qg3 Qxg3 11. hxg3 Nxc4 12. Nge2 Nf6 13. Bg5 h6 14. Bf4 a6 15. e5 Ng4 16. Ne4 b5 17. a3 Bb7 18. axb4 Bxe4 19. f3 Nf2 20. fxe4 Nxd1 21. Rxd1 Rc8 22. Kb1 g5 23. Bc1 Nxe5 24. Be3 0-0 25. Bc5 Rfe8 26. Rf1 Nd3 27. Bd4 f5 28. Nc3 e5 29. Be3 f4 30. gxf4 exf4 31. Bd2 Ne5 32. Nd5 Re6 33. Bc3 Rc4 34. Bxe5 Rxe5 35. Nf6+ Kg7 36. Nxd7 Rexe4 37. Nb8 Re6 38. Rd1 Rc8 39. Nd7 Rd8 40. Kc1 Re7 41. Nc5 Rxd1+ 42. Kxd1 Ra7 43. Ne6+ Kg6 44. Kd2 Kf5 45. Nd4+ Kg4 46. Ke2 Re7+ 47. Kf1 Re4 48. Nc2 Rc4 49. Ne1 Rc1 50. Kf2 Rxe1 51. Kxe1 f3 52. gxf3+ Kxf3 0-1

[Event "Haarlem Nova College op-C 12th"]
[Site "Haarlem"]
[Date "2013.06.29"]
[Round "2"]
[White "Verheijen, Jan"]
[Black "Hoeneveld, Maarten"]
[Result "0-1"]
[ECO "A25"]
[PlyCount "115"]
[EventDate "2013.06.28"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nc6 3. g3 Nf6 4. Bg2 b6 5. Nf3 Bb7 6. 0-0 Bc5 7. a3 0-0 8. b4 Be7 9. Nxe5 Nxe5 10. Bxb7 Rb8 11. Bd5 c6 12. d4 Nxd5 13. cxd5 Nc4 14. Qd3 b5 15. e4 a5 16. Bf4 Ra8 17. dxc6 dxc6 18. Na2 c5 19. d5 Bf6 20. bxc5 Bxa1 21. Rxa1 Rc8 22. Qd4 g5 23. Bc1 Qe7 24. d6 Qe5 25. Qxe5 Nxe5 26. Bxg5 f6 27. Be3 Nd3 28. Nc3 Nxc5 29. f3 Nb3 30. Rd1 Rxc3 31. Bb6 Nc5 32. Bxa5 Rxf3 33. Bb4 Nd7 34. Rc1 Rf7 35. Re1 Kg7 36. Kg2 Rd3 37. Kh3 Ne5 38. Rc1 Nc4 39. a4 Nxd6 40. Bxd6 Rxd6 41. axb5 Rb6 42. Rc5 Rfb7 43. e5 Rxb5 44. exf6+ Kxf6 45. Rc6+ Kg7 46. Rc1 Kg6 47. Rc6+ Kg5 48. Rc2 R7b6 49. Rd2 Rh6+ 50. Kg2 Rb4 51. Rd5+ Kg4 52. Rd2 Rb5 53. h4 Rb4 54. Rc2 Rhb6 55. Rc7 Rb2+ 56. Kf1 Ra6 57. Rc4+ Kh3 58. Rc1 0-1

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2013.06.25"]
[Round "6"]
[White "Verheijen, Jan"]
[Black "Faydi, Jonathan J"]
[Result "0-1"]
[ECO "D31"]
[BlackElo "2138"]
[PlyCount "104"]
[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 e6 2. Nc3 d5 3. cxd5 exd5 4. d4 c6 5. Nf3 Bf5 6. Bf4 Qb6 7. Na4 Bb4+ 8. Bd2 Bxd2+ 9. Qxd2 Qd8 10. Nc5 b6 11. Nd3 Nf6 12. e3 0-0 13. Be2 Nbd7 14. 0-0 Ne4 15. Qb4 c5 16. dxc5 bxc5 17. Qb7 Ndf6 18. Rfd1 Qb6 19. Qxb6 axb6 20. Nf4 Rfd8 21. Nh4 Bc8 22. Bf3 Bb7 23. Nf5 Kf8 24. Be2 Bc6 25. a3 Ba4 26. Rdc1 Nd2 27. Bd1 Nb3 28. Bxb3 Bxb3 29. Rc3 Bc4 30. b3 Ne4 31. Rc2 Bxb3 32. Rb2 c4 33. Nd4 Nc5 34. Rd2 c3 35. Re2 Bc4 36. Rc2 Na4 37. Nfe2 Bd3 38. Rcc1 Rac8 39. Nf4 Ba6 40. Rab1 Rc4 41. Nfe2 Rdc8 42. Nc2 R4c5 43. Ned4 Bd3 44. Rb4 Bxc2 45. Nxc2 Rc4 46. Kf1 h5 47. Ke2 g6 48. Rxc4 Rxc4 49. Nb4 d4 50. Kd3 Nb2+ 51. Ke2 Rxb4 52. axb4 d3+ 0-1

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2013.06.18"]
[Round "5"]
[White "Zeevaarder, Michael"]
[Black "Verheijen, Jan"]
[Result "1-0"]
[ECO "B24"]
[PlyCount "63"]
[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 c5 2. Nc3 Nc6 3. g3 Nf6 4. Bg2 d6 5. d3 Bg4 6. f3 Bh5 7. Be3 e5 8. Qd2 Be7 9. Nh3 Nd4 10. 0-0 Qd7 11. Bxd4 cxd4 12. Ne2 d5 13. c3 dxe4 14. fxe4 0-0 15. Rf5 Bg4 16. Rxe5 Bd6 17. Rg5 Bxh3 18. Rxg7+ Kh8 19. Qh6 Rg8 20. Bxh3 Qe7 21. Rxg8+ Rxg8 22. Bf5 dxc3 23. bxc3 Rg7 24. Rb1 b6 25. a4 Ng8 26. Qe3 Rg5 27. Rb5 a6 28. Rd5 Nf6 29. Rxd6 Rxf5 30. Qd4 Re5 31. Nf4 Kg8 32. Qxb6 1-0

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2013.06.11"]
[Round "4"]
[White "Verheijen, Jan"]
[Black "Kuipers, Joris"]
[Result "1/2-1/2"]
[ECO "E90"]
[PlyCount "52"]
[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. Nf3 Bg7 4. d4 d6 5. e4 0-0 6. Bg5 c5 7. e5 dxe5 8. dxe5 Qxd1+ 9. Rxd1 Nfd7 10. Bxe7 Re8 11. Bd6 Nxe5 12. Nxe5 Bxe5 13. Bxe5 Rxe5+ 14. Be2 Nc6 15. 0-0 Nd4 16. Bd3 Bf5 17. Bxf5 gxf5 18. f4 Ne2+ 19. Nxe2 Rxe2 20. Rf2 Rae8 21. Rd7 R8e7 22. Rd5 Re1+ 23. Rf1 b6 24. b3 R1e2 25. Rf2 Re1+ 26. Rf1 R1e2 1/2-1/2

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2013.06.04"]
[Round "3"]
[White "Schenkelaars, Robin"]
[Black "Verheijen, Jan"]
[Result "0-1"]
[ECO "B40"]
[PlyCount "56"]
[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 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Qb6 5. b3 Bc5 6. Be3 Nc6 7. Nxc6 Bxe3 8. fxe3 Qxe3+ 9. Qe2 Qc1+ 10. Qd1 Qxd1+ 11. Kxd1 bxc6 12. Nc3 Nf6 13. Bd3 0-0 14. Kd2 d5 15. exd5 cxd5 16. a4 Bb7 17. Ne2 e5 18. c3 Rac8 19. b4 e4 20. Bc2 Nd7 21. a5 Ba6 22. Nd4 e3+ 23. Kxe3 Rxc3+ 24. Kd2 Rc4 25. b5 Rxd4+ 26. Ke3 Rc4 27. Bd3 Re8+ 28. Kd2 Bxb5 0-1

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2013.05.28"]
[Round "2"]
[White "Verheijen, Jan"]
[Black "Van de Peut, Aart A"]
[Result "0-1"]
[ECO "D34"]
[BlackElo "1931"]
[PlyCount "42"]
[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 c5 3. Nf3 Nc6 4. g3 e6 5. Bg2 Be7 6. 0-0 0-0 7. e3 d5 8. cxd5 exd5 9. d4 Bg4 10. Qb3 Rb8 11. dxc5 Bxc5 12. Rd1 Qb6 13. Nxd5 Nxd5 14. Rxd5 Rbd8 15. Qxb6 Bxb6 16. Rxd8 Rxd8 17. h3 Rd1+ 18. Kh2 Bh5 19. g4 Bc7+ 20. Ne5 Nxe5 21. gxh5 Nf3# 0-1

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2013.05.21"]
[Round "1"]
[White "Erwich, Frans"]
[Black "Verheijen, Jan"]
[Result "1-0"]
[ECO "B40"]
[WhiteElo "2029"]
[PlyCount "63"]
[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 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Qb6 5. Nb3 Nf6 6. Be3 Qc7 7. Bd3 Nc6 8. 0-0 d5 9. Nc3 dxe4 10. Nxe4 Be7 11. c3 b6 12. a4 Bb7 13. Nxf6+ Bxf6 14. a5 0-0 15. a6 Bc8 16. Qh5 g6 17. Qf3 Bg7 18. Nd4 Bd7 19. Be4 Ne5 20. Qg3 Rad8 21. Bf4 f6 22. h4 Qc4 23. Bc2 Rfe8 24. h5 g5 25. Bxe5 fxe5 26. Nf3 h6 27. Nxe5 Bxe5 28. Qxe5 Qf4 29. Qe2 Bc8 30. Ra4 Qd2 31. Qe4 Re7 32. Rd1 1-0

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2009.06.23"]
[Round "6"]
[White "Van Ginkel, Henk"]
[Black "Verheijen, Jan"]
[Result "1-0"]
[ECO "B25"]
[WhiteElo "1842"]
[BlackElo "1655"]
[PlyCount "95"]
[EventDate "2009.05.19"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. g3 d6 4. d3 Nf6 5. Bg2 g6 6. f4 e5 7. Nf3 Bg7 8. 0-0 exf4 9. Bxf4 0-0 10. Qd2 Re8 11. Nb5 Bf8 12. Bg5 Be7 13. Nh4 Kg7 14. Qf4 Nd4 15. Nxd4 cxd4 16. Rf2 Be6 17. Qd2 Ng4 18. Bxe7 Rxe7 19. Rf3 d5 20. Nf5+ gxf5 21. Qg5+ Kf8 22. exf5 Bxf5 23. Qxf5 Ne3 24. Qxh7 Rc7 25. Qh8+ Ke7 26. Qf6+ Kf8 27. Qxd4 Nxg2 28. Qh8+ Ke7 29. Qf6+ Kf8 30. Qh8+ Ke7 31. Qf6+ Kf8 32. Qxd8+ Rxd8 33. Kxg2 Rxc2+ 34. Rf2 Rxf2+ 35. Kxf2 Rc8 36. Re1 Kg7 37. Re2 Kg6 38. Ke3 Re8+ 39. Kd2 Rh8 40. Kc3 Rh5 41. Rf2 Rh8 42. Kd4 Rd8 43. b4 f5 44. Ke5 Kg5 45. Rxf5+ Kg4 46. Rf4+ Kh3 47. Rh4+ Kg2 48. g4 1-0

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2009.06.09"]
[Round "4"]
[White "Lauer, Albert"]
[Black "Verheijen, Jan"]
[Result "1-0"]
[ECO "B40"]
[WhiteElo "1781"]
[BlackElo "1655"]
[PlyCount "131"]
[EventDate "2009.05.19"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Qb6 5. c3 Bc5 6. b4 Bxd4 7. Qxd4 Qxd4 8. cxd4 Nc6 9. Bb2 Nxb4 10. Kd2 Nf6 11. Nc3 a6 12. a3 Nc6 13. d5 Ne7 14. d6 Nc6 15. f4 0-0 16. e5 Ne8 17. Bd3 f6 18. Ne4 fxe5 19. fxe5 Rf5 20. Raf1 Nxe5 21. Rxf5 Nxd3 22. Rf3 Nxb2 23. Kc3 Na4+ 24. Kd4 b5 25. Rhf1 Nf6 26. Nxf6+ gxf6 27. Rxf6 Bb7 28. R1f4 Rc8 29. Rg4+ Kh8 30. Ke3 Nb6 31. Rf7 Nc4+ 32. Kf4 Nxd6 33. Rxd7 Rc4+ 34. Kg5 Rxg4+ 35. Kxg4 Bxg2 36. Rxd6 Bd5 37. Rxa6 Kg7 38. Kg5 h6+ 39. Kf4 Kf6 40. Rb6 Bc4 41. Rc6 Bf1 42. h4 Bg2 43. Rc5 Bf1 44. Re5 Bc4 45. Rc5 Bf1 46. Rh5 Kg6 47. Rc5 Kf6 48. Rc6 Bg2 49. Rb6 Bf1 50. Rb7 e5+ 51. Ke3 Kg6 52. Kf2 Bd3 53. Ke3 e4 54. Rb6+ Kh5 55. Kf4 Bc4 56. Kxe4 Kxh4 57. Rxh6+ Kg3 58. Kd4 Kf4 59. Kc5 Ke5 60. Rb6 Bf1 61. Rxb5 Bxb5 62. Kxb5 Kd6 63. Kb6 Kd7 64. Kb7 Kd6 65. a4 Kc5 66. a5 1-0

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2009.06.02"]
[Round "3"]
[White "Helfferich, Gert"]
[Black "Verheijen, Jan"]
[Result "0-1"]
[ECO "B44"]
[WhiteElo "1108"]
[BlackElo "1655"]
[PlyCount "42"]
[EventDate "2009.05.19"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. c4 Nc6 4. d4 cxd4 5. Nxd4 Qb6 6. Nxc6 bxc6 7. Qe2 Ba6 8. Nd2 g6 9. g3 Bg7 10. e5 Ne7 11. Rb1 Nf5 12. b4 0-0 13. b5 cxb5 14. cxb5 Bb7 15. Nf3 Qa5+ 16. Qd2 Qxd2+ 17. Nxd2 Bxh1 18. a4 Bxe5 19. f4 Bc7 20. Nb3 Rfc8 21. Nc5 Ba5+ 0-1

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2009.05.26"]
[Round "2"]
[White "Verheijen, Jan"]
[Black "Straver, Robert"]
[Result "0-1"]
[ECO "A54"]
[WhiteElo "1655"]
[BlackElo "2184"]
[PlyCount "72"]
[EventDate "2009.05.19"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nf6 3. g3 c6 4. Bg2 d6 5. Nf3 Be7 6. 0-0 0-0 7. d4 Nbd7 8. d5 c5 9. Nh4 Nb6 10. b3 Ne8 11. Nf3 a6 12. Bb2 Rb8 13. Nd2 Nd7 14. f4 f5 15. e4 exf4 16. Rxf4 Ne5 17. Qc2 Bg5 18. Rff1 f4 19. Ne2 fxg3 20. Rxf8+ Kxf8 21. Nxg3 Ng4 22. Ndf1 Kg8 23. Re1 Qe7 24. Qe2 Ne5 25. Nd2 Bg4 26. Nf3 Bf4 27. Nf5 Qf8 28. N5h4 Nf6 29. Qc2 g6 30. Nxe5 dxe5 31. Nf3 Re8 32. Qf2 Qh6 33. Bc3 Qh5 34. h3 Bxh3 35. Bxh3 Qxh3 36. Nxe5 Qxc3 0-1

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2009.05.19"]
[Round "1"]
[White "Verheijen, Jan"]
[Black "Hellenberg, Jan Amerik"]
[Result "0-1"]
[ECO "D13"]
[WhiteElo "1655"]
[BlackElo "2010"]
[PlyCount "30"]
[EventDate "2009.05.19"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. c4 c6 2. Nc3 Nf6 3. d4 d5 4. cxd5 cxd5 5. Nf3 Nc6 6. Bg5 Ne4 7. Nxe4 dxe4 8. Nd2 Qxd4 9. Qb3 e6 10. 0-0-0 Qc5+ 11. Kb1 Qxg5 12. Nxe4 Qg6 13. Qd3 Be7 14. e3 0-0 15. h4 Rd8 0-1

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2008.07.01"]
[Round "7"]
[White "Nieuwland, Huib"]
[Black "Verheijen, Jan"]
[Result "1-0"]
[ECO "B33"]
[WhiteElo "1903"]
[BlackElo "1620"]
[PlyCount "103"]
[EventDate "2008.05.20"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Qb6 5. Nb3 Nf6 6. Bd3 Nc6 7. Nc3 Ne5 8. Bf4 Nxd3+ 9. Qxd3 Bb4 10. 0-0 Bxc3 11. bxc3 d5 12. exd5 Nxd5 13. Be5 f6 14. Bd4 Qc6 15. f4 b6 16. a4 a5 17. Qb5 Qxb5 18. axb5 Rb8 19. c4 Nc7 20. Nc1 Kf7 21. Nd3 Bd7 22. Nb2 Rhc8 23. Rfd1 Ke8 24. Ra3 Rb7 25. Rf3 Nxb5 26. cxb5 Bxb5 27. Rb3 Be2 28. Rd2 Rd8 29. Kf2 Ba6 30. Ke3 b5 31. Nd3 a4 32. Rb4 a3 33. Nc5 a2 34. Ba1 Rxd2 35. Kxd2 Rb6 36. Nxa6 Rxa6 37. Rxb5 Kf7 38. Kc3 Ra4 39. g3 Ra3+ 40. Kb2 Rf3 41. Rb3 Rf2 42. h3 e5 43. fxe5 fxe5 44. Rc3 e4 45. Kxa2 Rf3 46. Rxf3+ exf3 47. Bd4 Ke6 48. c4 g6 49. Kb3 Kd6 50. Kc3 g5 51. g4 Ke6 52. Kd3 1-0

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2008.06.24"]
[Round "6"]
[White "Moene, Jelle"]
[Black "Verheijen, Jan"]
[Result "0-1"]
[ECO "B40"]
[BlackElo "1620"]
[PlyCount "68"]
[EventDate "2008.05.20"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Qb6 5. Nb3 Nf6 6. Nc3 Bb4 7. Qd3 Nc6 8. Be3 Qc7 9. Bd4 Nxd4 10. Nxd4 Bxc3+ 11. bxc3 a6 12. Be2 d5 13. exd5 Nxd5 14. c4 Qa5+ 15. Qd2 Qxd2+ 16. Kxd2 Nf6 17. Bf3 0-0 18. Kc1 e5 19. Nb3 e4 20. Be2 Bg4 21. Bxg4 Nxg4 22. f3 exf3 23. gxf3 Ne5 24. Nd2 Rac8 25. Rb1 Rc7 26. Re1 f6 27. f4 Ng6 28. Re4 Rd8 29. c3 Kf7 30. Kc2 Rd6 31. Rbe1 Rc5 32. Re8 Ra5 33. Rc8 Rxa2+ 34. Kb3 Raxd2 0-1

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2008.06.10"]
[Round "4"]
[White "Schild, Raymond"]
[Black "Verheijen, Jan"]
[Result "0-1"]
[ECO "D03"]
[BlackElo "1620"]
[PlyCount "50"]
[EventDate "2008.05.20"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. d4 Nf6 2. Nc3 e6 3. Nf3 d5 4. Bg5 c5 5. e3 cxd4 6. Qxd4 Nc6 7. Bb5 Bd7 8. Bxc6 bxc6 9. 0-0 c5 10. Qf4 Be7 11. Bxf6 Bxf6 12. e4 d4 13. e5 dxc3 14. exf6 Qxf6 15. Qxf6 gxf6 16. bxc3 Ba4 17. Ne1 Rb8 18. f4 Kd7 19. Nf3 Bxc2 20. g4 Rhg8 21. h3 h5 22. g5 Rb2 23. Rf2 Rgb8 24. Nd2 Bf5 25. h4 Rc2 0-1

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2008.05.27"]
[Round "2"]
[White "Verheijen, Jan"]
[Black "Van der Maat, Niek"]
[Result "0-1"]
[ECO "E67"]
[WhiteElo "1620"]
[BlackElo "1856"]
[PlyCount "76"]
[EventDate "2008.05.20"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. c4 Nf6 2. g3 g6 3. Bg2 Bg7 4. Nc3 0-0 5. d4 d6 6. Nf3 Nbd7 7. Bf4 Re8 8. 0-0 Nh5 9. Bd2 e5 10. d5 f5 11. Ng5 Nf8 12. e4 f4 13. Nh3 h6 14. gxf4 Qh4 15. Qf3 Bg4 16. Qe3 exf4 17. Nxf4 Nxf4 18. Qxf4 Be5 19. Qxh6 Bxh2+ 20. Kh1 Bh5 21. Bg5 Bf4+ 22. Bxh4 Bxh6 23. Nb5 g5 24. Bg3 Re7 25. f4 Be2 26. Rf2 Bxc4 27. Nxc7 Rxc7 28. Rc1 gxf4 29. Bxf4 Bxf4 30. Rxf4 Rh7+ 31. Kg1 Be2 32. Kf2 Bh5 33. Ke3 Ng6 34. Rf6 Rd8 35. Bh3 Ne5 36. Rg1+ Rg7 37. Rh1 Rg3+ 38. Kf2 Rxh3 0-1

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2008.05.20"]
[Round "1"]
[White "Serdijn Koster, Adinda"]
[Black "Verheijen, Jan"]
[Result "1-0"]
[ECO "B22"]
[WhiteElo "1997"]
[BlackElo "1620"]
[PlyCount "53"]
[EventDate "2008.05.20"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 c5 2. c3 Nc6 3. d4 cxd4 4. cxd4 e6 5. Nf3 Nf6 6. d5 Na5 7. Nc3 Bb4 8. Qd4 Qe7 9. Be2 exd5 10. exd5 b6 11. 0-0 Bc5 12. Qh4 Bb4 13. Bg5 Bb7 14. Nd4 Bxc3 15. bxc3 0-0-0 16. Rfe1 Rde8 17. Nf5 Qe5 18. Nxg7 Qxd5 19. Bf3 Rxe1+ 20. Rxe1 Qxa2 21. Bxb7+ Nxb7 22. Bxf6 Qd2 23. Ra1 Na5 24. Nf5 Re8 25. Ne7+ Kb7 26. Qxh7 Qd6 27. Qxf7 1-0

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2006.06.27"]
[Round "7"]
[White "Frijling, Jeroen"]
[Black "Verheijen, Jan"]
[Result "1-0"]
[ECO "A52"]
[WhiteElo "1774"]
[BlackElo "1611"]
[PlyCount "45"]
[EventDate "2006.05.16"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. Bf4 Bb4+ 5. Nd2 Qe7 6. Ngf3 Nc6 7. e3 Ngxe5 8. Nxe5 Nxe5 9. Be2 b6 10. 0-0 Bb7 11. Nb3 g5 12. Bg3 0-0-0 13. Nd4 d5 14. a3 Bd6 15. cxd5 Bxd5 16. Nb5 c6 17. Nxd6+ Rxd6 18. Qa4 Rd7 19. f4 gxf4 20. exf4 Ng6 21. Bg4 Rg8 22. Qxa7 Qe4 23. Qxd7+ 1-0

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2006.06.20"]
[Round "6"]
[White "Verheijen, Jan"]
[Black "Geertsma, Folkert Jan"]
[Result "0-1"]
[ECO "A22"]
[WhiteElo "1611"]
[BlackElo "1858"]
[PlyCount "94"]
[EventDate "2006.05.16"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nf6 3. g3 c6 4. Bg2 d6 5. Nf3 Be7 6. 0-0 0-0 7. d3 Bd7 8. e4 Ne8 9. c5 Bg4 10. cxd6 Qxd6 11. Qe2 Na6 12. Be3 Nec7 13. Rfd1 Ne6 14. Rac1 Rfd8 15. h3 Bxf3 16. Qxf3 Nd4 17. Qg4 g6 18. f4 h5 19. fxe5 Qxe5 20. Qf4 Qxf4 21. gxf4 Bc5 22. Kf2 Rd7 23. h4 Be7 24. Kg3 Nb4 25. Bh3 Rdd8 26. Bf1 Bc5 27. Rd2 Nf5+ 28. exf5 Bxe3 29. Rcd1 Bxd2 30. Rxd2 Kg7 31. a3 Na6 32. fxg6 fxg6 33. Ne4 Nc7 34. Nc5 b6 35. Ne4 Ne6 36. Ng5 Nxg5 37. fxg5 Re8 38. Bg2 Rac8 39. Be4 c5 40. Bb7 Rc7 41. Ba6 Rf7 42. Bc4 Re3+ 43. Kg2 Rf5 44. Rf2 Rxf2+ 45. Kxf2 Rh3 46. b4 Rxh4 47. bxc5 bxc5 0-1

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2006.06.13"]
[Round "5"]
[White "Oosthout, Wouter"]
[Black "Verheijen, Jan"]
[Result "1-0"]
[ECO "B24"]
[WhiteElo "1884"]
[BlackElo "1611"]
[PlyCount "59"]
[EventDate "2006.05.16"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. g3 Nf6 4. Bg2 d6 5. d3 g6 6. Nh3 Bg4 7. f3 Bd7 8. Be3 Bg7 9. Qd2 a6 10. Ne2 Ne5 11. Nf2 Qb6 12. c3 Qb5 13. h3 0-0 14. g4 Rac8 15. f4 Nc6 16. Ng3 e5 17. f5 gxf5 18. gxf5 c4 19. Ng4 cxd3 20. Nxf6+ Bxf6 21. Bh6 Bh4 22. 0-0-0 Nd4 23. Kb1 Ne2 24. Nxe2 dxe2 25. Rde1 Rfd8 26. Bf3 f6 27. Reg1+ Kf7 28. Rg7+ Ke8 29. Bxe2 Qb6 30. Bh5+ 1-0

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2006.06.06"]
[Round "4"]
[White "Verheijen, Jan"]
[Black "Landheer, Ronald"]
[Result "1-0"]
[ECO "A26"]
[WhiteElo "1611"]
[PlyCount "105"]
[EventDate "2006.05.16"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 Nge7 6. Nf3 0-0 7. 0-0 d6 8. Bg5 f6 9. Bd2 Be6 10. Nh4 Qd7 11. Nd5 a5 12. Qa4 Ra7 13. Be3 b6 14. a3 Kh8 15. Qb5 Re8 16. f4 Nd4 17. Qxd7 Bxd7 18. Bxd4 exd4 19. Nxe7 Rxe7 20. Kf2 c5 21. b4 Bg4 22. Nf3 axb4 23. axb4 Kg8 24. b5 Kf8 25. h3 Bxf3 26. Bxf3 Ke8 27. Ra6 Rxa6 28. bxa6 Ra7 29. Bb7 Kd7 30. Kf3 Kc7 31. Ke4 Rxb7 32. axb7 Kxb7 33. Kd5 Bf8 34. Ke6 f5 35. h4 Kc6 36. Kf7 Bh6 37. Kg8 d5 38. cxd5+ Kxd5 39. Kxh7 Bf8 40. Kxg6 b5 41. Kxf5 c4 42. Rb1 b4 43. dxc4+ Kxc4 44. Ke4 Bg7 45. g4 b3 46. Rc1+ Kb4 47. Rc7 b2 48. Rb7+ Kc3 49. g5 Kc2 50. f5 b1Q 51. Rxb1 Kxb1 52. f6 Bf8 53. Kxd4 1-0

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2006.05.30"]
[Round "3"]
[White "Bingen, Stanley"]
[Black "Verheijen, Jan"]
[Result "0-1"]
[ECO "B50"]
[WhiteElo "1232"]
[BlackElo "1611"]
[PlyCount "76"]
[EventDate "2006.05.16"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 c5 2. Bc4 e6 3. Nf3 Nc6 4. 0-0 Nf6 5. d3 d6 6. Nc3 Bd7 7. a3 Be7 8. Bg5 h6 9. Bxf6 gxf6 10. Qd2 Ne5 11. Qe3 Nxc4 12. dxc4 a5 13. Rad1 Qb6 14. b3 0-0-0 15. Rb1 Rdg8 16. b4 Rg4 17. bxc5 Qxc5 18. Qxc5+ dxc5 19. Rfe1 Bc6 20. Re3 Rhg8 21. g3 Rd8 22. Rbe1 b6 23. Rd3 Bd6 24. Red1 Bc7 25. Re1 f5 26. exf5 Rxd3 27. cxd3 Bxf3 28. fxe6 fxe6 29. Rxe6 Rd4 30. Re3 Bc6 31. f4 Bd8 32. Ne2 Rd6 33. Kf2 Bf6 34. h4 Bb2 35. f5 Bxa3 36. d4 cxd4 37. Rxa3 d3 38. Nc3 d2 0-1

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2006.05.23"]
[Round "2"]
[White "Verheijen, Jan"]
[Black "Bakker, Joop"]
[Result "0-1"]
[ECO "A37"]
[WhiteElo "1611"]
[BlackElo "1850"]
[PlyCount "56"]
[EventDate "2006.05.16"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. c4 c5 2. Nc3 g6 3. g3 Bg7 4. Nf3 Nc6 5. Bg2 e5 6. d3 Nge7 7. e4 0-0 8. 0-0 d6 9. Qb3 f5 10. Bd2 fxe4 11. dxe4 Bg4 12. Nd5 Bxf3 13. Bxf3 Nd4 14. Qxb7 Nxf3+ 15. Kg2 Nxd5 16. Qxd5+ Kh8 17. Be3 Rb8 18. b3 Nd4 19. Rad1 Qf6 20. h4 Qf3+ 21. Kh2 Rbd8 22. Qb7 Rf7 23. Qd5 Rdf8 24. Qxd6 Qxe4 25. Qxc5 Nf3+ 26. Kh3 Nxh4 27. gxh4 Rf3+ 28. Kg2 Qg4+ 0-1

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2006.05.16"]
[Round "1"]
[White "De Leur, Ben"]
[Black "Verheijen, Jan"]
[Result "1-0"]
[ECO "A23"]
[WhiteElo "2024"]
[BlackElo "1611"]
[PlyCount "43"]
[EventDate "2006.05.16"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nf6 3. g3 c6 4. Nf3 e4 5. Nd4 c5 6. Nc2 b6 7. Bg2 Bb7 8. 0-0 Bd6 9. d3 Qe7 10. Nxe4 Nxe4 11. dxe4 0-0 12. e5 Bxg2 13. exd6 Qe4 14. f3 Bxf3 15. exf3 Qxc4 16. Ne3 Qb5 17. Nd5 Na6 18. a4 Qc4 19. b3 Qd4+ 20. Qxd4 cxd4 21. b4 Rac8 22. Ne7+ 1-0

[Event "Leiden SB-chB"]
[Site "Leiden"]
[Date "2004.07.07"]
[Round "7"]
[White "Verheijen, Jan"]
[Black "Van den Bosse, Bart"]
[Result "1-0"]
[ECO "D13"]
[WhiteElo "1543"]
[BlackElo "1617"]
[PlyCount "69"]
[EventDate "2004.05.19"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. c4 c6 2. d4 d5 3. cxd5 cxd5 4. Nc3 Nf6 5. Nf3 Nc6 6. Bf4 e6 7. a3 a6 8. e3 Be7 9. Bd3 Nh5 10. Bg3 Nxg3 11. hxg3 h6 12. Rc1 Bd7 13. Nh2 b5 14. b4 Rc8 15. f4 Na7 16. 0-0 0-0 17. Nf3 Bd6 18. Ne5 Bxe5 19. dxe5 Qb6 20. Qd2 Bc6 21. Ne2 Ba8 22. Nd4 Nc6 23. Rc5 Rc7 24. Rfc1 Rfc8 25. Qc2 Nxd4 26. Rxc7 Ne2+ 27. Bxe2 Qxe3+ 28. Kf1 Rxc7 29. Qxc7 Kh7 30. Qc2+ g6 31. Qc3 Qe4 32. Bd3 Qxg2+ 33. Kxg2 d4+ 34. Kf2 dxc3 35. Rxc3 1-0

[Event "Leiden SB-chB"]
[Site "Leiden"]
[Date "2004.06.09"]
[Round "4"]
[White "Bottema, Timo"]
[Black "Verheijen, Jan"]
[Result "1-0"]
[ECO "B40"]
[WhiteElo "1569"]
[BlackElo "1543"]
[PlyCount "65"]
[EventDate "2004.05.19"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Qb6 5. Nc3 Bc5 6. Na4 Qa5+ 7. c3 Bxd4 8. Qxd4 Nf6 9. f3 Nc6 10. Qd1 d6 11. b4 Qc7 12. Bf4 e5 13. Bg3 Be6 14. Bd3 a6 15. 0-0 Rc8 16. Qd2 0-0 17. Rfd1 Ne7 18. f4 b5 19. Nb2 Nh5 20. f5 Nxg3 21. hxg3 Bd7 22. Rac1 d5 23. g4 dxe4 24. Bxe4 Rfd8 25. Qe3 Bc6 26. Bxc6 Nxc6 27. Nd3 f6 28. Nc5 Rxd1+ 29. Rxd1 Qa7 30. g5 Rd8 31. Rxd8+ Nxd8 32. Qd3 Nf7 33. g6 1-0

[Event "Leiden SB-chB"]
[Site "Leiden"]
[Date "2004.06.09"]
[Round "6"]
[White "Otto, Paul"]
[Black "Verheijen, Jan"]
[Result "0-1"]
[ECO "A03"]
[WhiteElo "1108"]
[BlackElo "1543"]
[PlyCount "64"]
[EventDate "2004.05.19"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. f4 d5 2. Nf3 Nf6 3. e3 c5 4. b3 Nc6 5. Bb5 a6 6. Bxc6+ bxc6 7. Bb2 a5 8. a4 Ba6 9. d3 e6 10. 0-0 Be7 11. Ne5 Qb6 12. Nd2 c4 13. dxc4 Qxe3+ 14. Kh1 dxc4 15. Rf3 Qb6 16. Ndxc4 Bxc4 17. Nxc4 Qa6 18. Nd6+ Kf8 19. Rd3 Nd5 20. Bxg7+ Kxg7 21. Qg4+ Kf8 22. Nxf7 Kxf7 23. Qh5+ Kf8 24. Rf1 Nf6 25. Qh6+ Ke8 26. f5 Rd8 27. Rdf3 Rg8 28. fxe6 Qe2 29. R3f2 Qe4 30. Qh3 Rd6 31. Qc3 Rxe6 32. Qxa5 Kf7 0-1

[Event "Leiden SB-chB"]
[Site "Leiden"]
[Date "2004.05.26"]
[Round "2"]
[White "Verheijen, Jan"]
[Black "Planjer, Frank"]
[Result "0-1"]
[ECO "A20"]
[WhiteElo "1543"]
[BlackElo "1494"]
[PlyCount "58"]
[EventDate "2004.05.19"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. c4 e5 2. g3 Bc5 3. Bg2 Nf6 4. e3 d5 5. cxd5 Nxd5 6. Qb3 c6 7. Nf3 Nd7 8. 0-0 0-0 9. Nc3 Nxc3 10. bxc3 Bd6 11. d4 exd4 12. cxd4 Nb6 13. Bd2 Be6 14. Qb2 Qe7 15. Qc2 c5 16. h4 h6 17. dxc5 Bxc5 18. Nd4 Bxd4 19. exd4 Rac8 20. Qe4 Rc7 21. Rfe1 Qd8 22. Bf1 Bd5 23. Qe5 Rc6 24. Bb4 Re6 25. Qf4 Rfe8 26. Rec1 Bc6 27. Bc5 Qd5 28. f3 Rf6 29. Qg4 Bd7 0-1

[Event "Leiden SB-chB"]
[Site "Leiden"]
[Date "2004.05.19"]
[Round "1"]
[White "Goudriaan, Theo"]
[Black "Verheijen, Jan"]
[Result "1-0"]
[ECO "B44"]
[WhiteElo "1838"]
[BlackElo "1543"]
[PlyCount "58"]
[EventDate "2004.05.19"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Be3 Nf6 6. Bd3 Nb4 7. 0-0 Nxd3 8. Qxd3 d5 9. e5 Ng4 10. Bf4 Qb6 11. Nd2 f6 12. exf6 Nxf6 13. Nb5 Kd7 14. Nc7 Bd6 15. Bxd6 Kxd6 16. Nxa8 Qd8 17. Qa3+ Kc6 18. Nb3 Qf8 19. Qxa7 Nd7 20. Qa4+ Kd6 21. Qb4+ Ke5 22. Qc3+ Kd6 23. Nc7 b6 24. Qg3+ Ke7 25. Rfe1 Nc5 26. Nxd5+ Kf7 27. Nxb6 Bb7 28. Qf4+ Kg6 29. Qxf8 Rxf8 1-0

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2003.07.01"]
[Round "7"]
[White "Verheijen, Jan"]
[Black "Schreur, Gertjan"]
[Result "0-1"]
[ECO "B02"]
[WhiteElo "1598"]
[BlackElo "1710"]
[PlyCount "120"]
[EventDate "2003.05.20"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 095 Extra"]
[Source "ChessBase"]
[SourceDate "2003.09.04"]
[SourceVersion "1"]
[SourceVersionDate "2003.09.04"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Nf6 3. Nc3 Nxd5 4. Bc4 Nb6 5. Bb3 Nc6 6. Nf3 Bg4 7. h3 Bf5 8. d3 e6 9. 0-0 Be7 10. Bf4 a6 11. Ne5 Nxe5 12. Bxe5 Bf6 13. f4 Nd7 14. d4 h6 15. Qf3 c6 16. Rae1 0-0 17. Ne4 Bh4 18. Re2 Nxe5 19. dxe5 Qd4+ 20. Kh2 Bxe4 21. Qxe4 Rad8 22. Qxd4 Rxd4 23. c3 Rd7 24. Rd1 Rxd1 25. Bxd1 Rd8 26. Bc2 c5 27. g3 Be7 28. Kg2 c4 29. b4 cxb3 30. axb3 Rc8 31. Re3 Bb4 32. c4 Kf8 33. Kf3 Ke7 34. g4 g6 35. f5 gxf5 36. gxf5 Rg8 37. f6+ Kd7 38. Rd3+ Kc7 39. Kf4 Rg2 40. Bd1 Rg5 41. Bg4 Be1 42. h4 Bxh4 43. Rh3 Be1 44. Bh5 Bd2+ 45. Ke4 Bc3 46. Bxf7 Bxe5 47. Bxe6 Bxf6 48. Rxh6 Re5+ 49. Kf4 Rxe6 50. Kf5 Re3 51. Rxf6 Rxb3 52. Ke5 Rd3 53. Ke4 Rd1 54. Rg6 Kb8 55. c5 a5 56. Rb6 Kc7 57. Ke5 a4 58. Ke6 a3 59. Ke7 a2 60. Rd6 a1Q 0-1

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2003.06.17"]
[Round "5"]
[White "Eisses, Job"]
[Black "Verheijen, Jan"]
[Result "1-0"]
[ECO "B40"]
[WhiteElo "1444"]
[BlackElo "1598"]
[PlyCount "59"]
[EventDate "2003.05.20"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 095 Extra"]
[Source "ChessBase"]
[SourceDate "2003.09.04"]
[SourceVersion "1"]
[SourceVersionDate "2003.09.04"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Bb4 6. Bd2 Bxc3 7. Bxc3 Nxe4 8. Bd3 Nxc3 9. bxc3 Qc7 10. c4 Qa5+ 11. Qd2 Qe5+ 12. Qe3 Qxe3+ 13. fxe3 0-0 14. 0-0 e5 15. Nb5 Na6 16. Nd6 Nc5 17. Be4 Nxe4 18. Nxe4 b6 19. Nd6 g6 20. Rf6 Ba6 21. Raf1 Rab8 22. Rxf7 Rxf7 23. Rxf7 Bxc4 24. Rxd7 Bxa2 25. Rxa7 Bb1 26. Rc7 Rd8 27. Ne4 Rf8 28. Ng5 Ra8 29. Nxh7 Ra1 30. Nf6+ 1-0

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2003.06.10"]
[Round "4"]
[White "Verheijen, Jan"]
[Black "Walraven, Maurice"]
[Result "0-1"]
[ECO "C27"]
[WhiteElo "1598"]
[BlackElo "1658"]
[PlyCount "50"]
[EventDate "2003.05.20"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 095 Extra"]
[Source "ChessBase"]
[SourceDate "2003.09.04"]
[SourceVersion "1"]
[SourceVersionDate "2003.09.04"]
[SourceQuality "1"]

1. e4 e5 2. Nc3 Nf6 3. Bc4 Bc5 4. d3 0-0 5. f4 exf4 6. Bxf4 d6 7. h3 Nc6 8. a3 a5 9. Nf3 Nd4 10. Ne2 Nxf3+ 11. gxf3 Nh5 12. h4 Nxf4 13. Nxf4 Be3 14. Nd5 Bh6 15. Qe2 c6 16. Ne3 Re8 17. Kf2 Be6 18. Rag1 Bxc4 19. Nxc4 d5 20. Ne3 Qb6 21. b3 Re6 22. h5 Rae8 23. Rg4 f5 24. Rg2 dxe4 25. dxe4 fxe4 0-1

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2003.06.03"]
[Round "3"]
[White "Postma, Jan"]
[Black "Verheijen, Jan"]
[Result "1-0"]
[ECO "B38"]
[WhiteElo "1719"]
[BlackElo "1598"]
[PlyCount "79"]
[EventDate "2003.05.20"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 095 Extra"]
[Source "ChessBase"]
[SourceDate "2003.09.04"]
[SourceVersion "1"]
[SourceVersionDate "2003.09.04"]
[SourceQuality "1"]

1. e4 c5 2. c4 d6 3. Nc3 Nf6 4. Nf3 Nc6 5. d4 cxd4 6. Nxd4 g6 7. Be2 Bg7 8. Be3 0-0 9. 0-0 Bd7 10. Rc1 Rc8 11. b3 Re8 12. f3 Nh5 13. Nxc6 Rxc6 14. g4 Nf6 15. Nb5 Qa5 16. a3 a6 17. b4 Qd8 18. Na7 Rb6 19. Qd4 Rc6 20. Nxc6 Bxc6 21. Qd3 Nd7 22. f4 e5 23. f5 Nf6 24. Bf3 h5 25. g5 Ng4 26. Bxg4 hxg4 27. f6 Bf8 28. Rfd1 b6 29. c5 Qa8 30. cxd6 Bxe4 31. Qf1 Bd5 32. Bxb6 Bxd6 33. Bc5 Bxc5+ 34. Rxc5 Bf3 35. Rd6 Qe4 36. Rd2 Ra8 37. Rc1 Kf8 38. Qf2 Qb7 39. Qc5+ Ke8 40. Rc3 1-0

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2003.05.27"]
[Round "2"]
[White "Verheijen, Jan"]
[Black "Van Stee, Rob"]
[Result "0-1"]
[ECO "C27"]
[WhiteElo "1598"]
[PlyCount "144"]
[EventDate "2003.05.20"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 095 Extra"]
[Source "ChessBase"]
[SourceDate "2003.09.04"]
[SourceVersion "1"]
[SourceVersionDate "2003.09.04"]
[SourceQuality "1"]

1. e4 e5 2. Nc3 Nf6 3. Bc4 Nxe4 4. Qh5 Nd6 5. Bb3 c6 6. Ne4 Nc4 7. Bxc4 d5 8. Bb3 Be7 9. Ng3 Qc7 10. d3 g6 11. Qh6 Bf8 12. Qg5 Bg7 13. Nh5 0-0 14. Nxg7 Kxg7 15. Nf3 f6 16. Qh6+ Kg8 17. Bd2 Be6 18. 0-0 Nd7 19. Rfe1 c5 20. c3 Qb6 21. c4 dxc4 22. dxc4 Qa6 23. Re4 Rf7 24. Rh4 Rg7 25. Re4 Nb6 26. Rc1 Rd8 27. Qe3 Rc7 28. Qe2 Rcd7 29. Rd1 Bf5 30. Re3 Bd3 31. Rxd3 Rxd3 32. Be3 Rxd1+ 33. Bxd1 Nd7 34. b3 Qd6 35. Nd2 b6 36. Bc2 Nf8 37. Be4 Ne6 38. Bd5 Kg7 39. Ne4 Qe7 40. g3 Nd4 41. Qd1 h6 42. Kg2 f5 43. Nc3 a6 44. Qe1 Rd7 45. Qd2 h5 46. Bh6+ Kh7 47. Bg5 Qd6 48. h4 Ne6 49. Be3 Nc7 50. f3 b5 51. Qf2 Nxd5 52. Nxd5 bxc4 53. bxc4 Qc6 54. Bxc5 Rd8 55. Qe3 Qe6 56. Qg5 Rc8 57. Qe3 Qc6 58. Ne7 Qxc5 59. Qxc5 Rxc5 60. Nd5 Rxc4 61. Kh3 Ra4 62. f4 e4 63. Nf6+ Kg7 64. Nd5 Rxa2 65. Nb4 Ra4 66. Nc2 a5 67. Ne3 Ra2 68. Nc4 a4 69. Ne3 a3 70. Ng2 Rxg2 71. Kxg2 a2 72. Kh3 a1Q 0-1

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2003.05.20"]
[Round "1"]
[White "Van Vliet, Jeffrey"]
[Black "Verheijen, Jan"]
[Result "1-0"]
[ECO "B23"]
[WhiteElo "2105"]
[BlackElo "1598"]
[PlyCount "69"]
[EventDate "2003.05.20"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 095 Extra"]
[Source "ChessBase"]
[SourceDate "2003.09.04"]
[SourceVersion "1"]
[SourceVersionDate "2003.09.04"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 e6 3. g3 Nc6 4. Bg2 d6 5. f4 Be7 6. Nf3 Nf6 7. d4 cxd4 8. Nxd4 d5 9. e5 Nd7 10. Be3 Bb4 11. Qd2 Qa5 12. Nb3 Bxc3 13. Nxa5 Bxd2+ 14. Bxd2 Nd4 15. Rc1 b6 16. Nb3 Nxb3 17. axb3 Nc5 18. b4 Ne4 19. Be3 Bb7 20. 0-0 Ke7 21. Ra1 f6 22. exf6+ Nxf6 23. Ra3 Rhc8 24. c3 Rc4 25. Rfa1 Ng4 26. Bd4 Rxd4 27. cxd4 a6 28. b5 a5 29. b4 Kd6 30. bxa5 bxa5 31. Rxa5 Rxa5 32. Rxa5 Ne3 33. Ra3 Nc4 34. Rc3 Kc7 35. Bf1 1-0

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2002.07.02"]
[Round "7"]
[White "Van Dijk, Rens"]
[Black "Verheijen, Jan"]
[Result "0-1"]
[ECO "B29"]
[WhiteElo "1517"]
[BlackElo "1594"]
[PlyCount "48"]
[EventDate "2002.05.21"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 c5 2. d3 Nf6 3. Nf3 d6 4. Bg5 Nc6 5. Bxf6 gxf6 6. c3 Bg4 7. Be2 Qb6 8. b3 Bg7 9. Qd2 h5 10. Na3 Be6 11. 0-0 Bh6 12. Qc2 Rg8 13. Nc4 Qc7 14. d4 Bh3 15. Ne1 cxd4 16. Qd3 Qd7 17. Bxh5 b5 18. Na3 dxc3 19. Nxb5 Bd2 20. Qd5 Be6 21. Qd3 Nb4 22. Qe2 Bxe1 23. Rfxe1 Rc8 24. Rac1 Rc5 0-1

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2002.06.25"]
[Round "6"]
[White "Verheijen, Jan"]
[Black "Van Duijvenbode, Harrie Sr"]
[Result "1/2-1/2"]
[ECO "B18"]
[WhiteElo "1594"]
[BlackElo "1738"]
[PlyCount "47"]
[EventDate "2002.05.21"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 c6 2. Nc3 d5 3. d4 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. Nf3 Nd7 7. Bc4 e6 8. Bf4 Ngf6 9. c3 Nd5 10. Bg5 Qc7 11. Nh4 N7f6 12. Nxg6 hxg6 13. Qf3 Be7 14. Bb3 Nh5 15. Bxe7 Qxe7 16. Nxh5 Rxh5 17. Bxd5 Rxd5 18. 0-0-0 0-0-0 19. Rhe1 Rf5 20. Qg3 Rh8 21. Re5 Qh4 22. Qxh4 Rxh4 23. Rxf5 gxf5 24. h3 1/2-1/2

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2002.06.18"]
[Round "5"]
[White "Kriek, F."]
[Black "Verheijen, Jan"]
[Result "0-1"]
[ECO "B21"]
[WhiteElo "1407"]
[BlackElo "1594"]
[PlyCount "92"]
[EventDate "2002.05.21"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 e6 5. Nf3 Nc6 6. Bf4 Bb4 7. Bc4 Bxc3+ 8. bxc3 Nge7 9. Bg5 f6 10. Bh4 Ng6 11. Bg3 0-0 12. 0-0 b6 13. Bd6 Rf7 14. Qd2 Bb7 15. Qc2 Rc8 16. Be2 Nge5 17. Nd2 Nd4 18. Qd1 Nxe2+ 19. Qxe2 Rxc3 20. Rfc1 Qc8 21. Nb3 Rc6 22. Rxc6 Qxc6 23. Ba3 Qxe4 24. Qxe4 Bxe4 25. Rc1 h6 26. Rc8+ Kh7 27. Nd4 Bd5 28. Rc7 a5 29. Rc2 Bc6 30. f4 Ba4 31. Rc7 Ng6 32. Nxe6 dxe6 33. Rxf7 Nxf4 34. Rc7 e5 35. Rb7 b5 36. Ra7 b4 37. Bc1 Ne2+ 38. Kf2 Nxc1 39. Rxa5 Bc2 40. Ke1 Nd3+ 41. Kd2 Bb1 42. Rb5 e4 43. Ke3 g5 44. Kxe4 Nc1+ 45. Ke3 Nxa2 46. Kd4 Bc2 0-1

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2002.06.11"]
[Round "4"]
[White "Verheijen, Jan"]
[Black "Voge, Peter"]
[Result "0-1"]
[ECO "B56"]
[WhiteElo "1594"]
[BlackElo "1476"]
[PlyCount "82"]
[EventDate "2002.05.21"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. Bb5+ Bd7 8. f3 0-0 9. 0-0 Nc6 10. Qd2 a6 11. Nxc6 bxc6 12. Bc4 Qa5 13. Bh6 Bxh6 14. Qxh6 Qc5+ 15. Rf2 Qxc4 16. h4 Rab8 17. Nd1 Qc5 18. b3 a5 19. Ne3 d5 20. e5 Qd4 21. exf6 Qxa1+ 22. Kh2 Qxf6 23. g4 e5 24. h5 Qf4+ 25. Qxf4 exf4 26. Ng2 g5 27. Ne1 Rfe8 28. Nd3 Re3 29. Nc5 Be6 30. Kg2 Rb5 31. Na6 d4 32. Nc7 Rbe5 33. Kf1 Re1+ 34. Kg2 R5e2 35. Ne8 Bd5 36. Nf6+ Kg7 37. Nxd5 cxd5 38. c4 dxc3 39. b4 axb4 40. a3 c2 41. axb4 c1Q 0-1

