[Event "NED-ch U20 op"]
[Site "Borne"]
[Date "2019.08.07"]
[Round "5"]
[White "Kroon, Gerbrich"]
[Black "De Vries, Tobias"]
[Result "0-1"]
[ECO "A08"]
[WhiteElo "1483"]
[BlackElo "1868"]
[PlyCount "102"]
[EventDate "2019.08.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 191 Extra"]
[Source "ChessBase"]
[SourceDate "2019.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2019.09.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. g3 g6 4. Bg2 Bg7 5. 0-0 e6 6. d3 Nge7 7. c3 0-0 8. Re1 d5 9. Nbd2 b6 10. Nb3 Bb7 11. d4 dxe4 12. Nfd2 cxd4 13. cxd4 Nxd4 14. Nxe4 Nxb3 15. Qxb3 Bd5 16. Qd1 h6 17. Qe2 Nf5 18. Rd1 Qc8 19. Be3 Nxe3 20. fxe3 Rd8 21. Rac1 Qb7 22. Nc3 Bxg2 23. Qxg2 Qxg2+ 24. Kxg2 Bxc3 25. bxc3 Rac8 26. Rxd8+ Rxd8 27. Rc2 Kg7 28. Kf3 f5 29. Kf4 Kf6 30. h4 Rd1 31. Kf3 Ke5 32. Ke2 Rd5 33. Rb2 Rc5 34. Kd3 Kd5 35. Rb4 e5 36. a4 e4+ 37. Kc2 Rc4 38. Rb5+ Kd6 39. Kb3 Rc5 40. Rb4 Ke5 41. Rd4 Rc6 42. Rd7 a5 43. Rd4 g5 44. hxg5 hxg5 45. Rd1 f4 46. gxf4+ gxf4 47. exf4+ Kxf4 48. Re1 Kf3 49. Kc2 e3 50. Kd3 Rd6+ 51. Kc4 e2 0-1

[Event "NED-ch U20 op"]
[Site "Borne"]
[Date "2019.08.05"]
[Round "1"]
[White "Kroon, Gerbrich"]
[Black "Godde, Matthias"]
[Result "0-1"]
[ECO "A07"]
[WhiteElo "1483"]
[BlackElo "1989"]
[PlyCount "40"]
[EventDate "2019.08.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 191 Extra"]
[Source "ChessBase"]
[SourceDate "2019.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2019.09.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. g3 g6 4. Bg2 Bg7 5. 0-0 e5 6. c3 Nge7 7. d3 d5 8. Nbd2 0-0 9. Re1 Re8 10. Nf1 h6 11. Ne3 Be6 12. h3 Qd7 13. Kh2 Rad8 14. Bd2 d4 15. cxd4 Nxd4 16. Bf1 Nec6 17. Nc4 Nxf3+ 18. Qxf3 Bxc4 19. dxc4 Qxd2 20. Re2 Nd4 0-1

[Event "NED-ch U16 Girls"]
[Site "Assen"]
[Date "2017.04.29"]
[Round "7"]
[White "Lu, Ting Ting"]
[Black "Kroon, Gerbrich"]
[Result "1/2-1/2"]
[ECO "B12"]
[WhiteElo "1493"]
[BlackElo "1437"]
[PlyCount "53"]
[EventDate "2017.04.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 178 Extra"]
[Source "ChessBase"]
[SourceDate "2017.06.22"]
[SourceVersion "1"]
[SourceVersionDate "2017.06.22"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nc3 e6 5. g4 Bg6 6. Nge2 c5 7. Be3 Nc6 8. h4 h5 9. g5 Nge7 10. Nf4 cxd4 11. Nxg6 Nxg6 12. Bxd4 Ngxe5 13. Bxe5 Nxe5 14. Be2 g6 15. Qd4 Bg7 16. Bb5+ Kf8 17. Qc5+ Qe7 18. Qxe7+ Kxe7 19. 0-0-0 a6 20. Be2 b5 21. Rhe1 Rhc8 22. f4 Nc6 23. Bxb5 Bxc3 24. Bxc6 Bxb2+ 25. Kxb2 Rab8+ 26. Kc1 Rxc6 27. Rxd5 1/2-1/2

[Event "NED-ch U16 Girls"]
[Site "Assen"]
[Date "2017.04.28"]
[Round "6"]
[White "Kroon, Gerbrich"]
[Black "Monteny, Pascalle"]
[Result "1-0"]
[ECO "C54"]
[WhiteElo "1437"]
[BlackElo "1467"]
[PlyCount "157"]
[EventDate "2017.04.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 178 Extra"]
[Source "ChessBase"]
[SourceDate "2017.06.22"]
[SourceVersion "1"]
[SourceVersionDate "2017.06.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d3 d6 6. Bb3 0-0 7. Nbd2 Bg4 8. h3 Bh5 9. g4 Bg6 10. Nf1 d5 11. exd5 Nxd5 12. Bc2 Qe7 13. Qe2 Rfe8 14. Be3 Bxe3 15. Nxe3 Nf4 16. Qd2 Rad8 17. 0-0-0 Be4 18. Nf5 Qf8 19. Qe3 Bxf5 20. gxf5 Qe7 21. h4 Qf6 22. Qe4 Qh6 23. Kb1 Qf6 24. Bb3 h6 25. Rhg1 Nh3 26. Rg2 Nf4 27. Rg3 Kh8 28. Bc2 Qd6 29. Nd2 Qd5 30. Qxd5 Nxd5 31. Ne4 Nf4 32. f6 g6 33. f3 b6 34. Nf2 h5 35. Bb3 Rf8 36. Kc2 Na5 37. Ba4 a6 38. b4 Nb7 39. Re1 b5 40. Bb3 Rfe8 41. Bxf7 Rf8 42. Bxg6 Rxf6 43. Be4 Nd6 44. Bc6 Nf7 45. Be4 Nh6 46. Nh3 Rdf8 47. Nxf4 Rxf4 48. Rg5 Rxh4 49. Rxe5 Rh2+ 50. Kb3 Nf7 51. Rf5 Rg2 52. Rxh5+ Kg7 53. Reh1 Rh8 54. Rxh8 Nxh8 55. f4 Rg4 56. Rh7+ Kg8 57. Rxc7 Rxf4 58. a4 Nf7 59. Bd5 Kf8 60. Rxf7+ Rxf7 61. Bxf7 Kxf7 62. axb5 axb5 63. c4 bxc4+ 64. dxc4 Ke6 65. Ka4 Kd6 66. Kb5 Kc7 67. Kc5 Kb7 68. Kd6 Kc8 69. Kc6 Kb8 70. Kd7 Kb7 71. c5 Kb8 72. c6 Ka8 73. c7 Kb7 74. c8Q+ Ka7 75. Kd6 Kb6 76. Qc6+ Ka7 77. Qb5 Ka8 78. Kc7 Ka7 79. Qb7# 1-0

[Event "NED-ch U16 Girls"]
[Site "Assen"]
[Date "2017.04.27"]
[Round "5"]
[White "Waardenburg, Marlinde"]
[Black "Kroon, Gerbrich"]
[Result "1-0"]
[ECO "B12"]
[WhiteElo "1608"]
[BlackElo "1437"]
[PlyCount "39"]
[EventDate "2017.04.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 178 Extra"]
[Source "ChessBase"]
[SourceDate "2017.06.22"]
[SourceVersion "1"]
[SourceVersionDate "2017.06.22"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nf3 e6 5. Be2 c5 6. c4 Nc6 7. cxd5 Qxd5 8. Nc3 Qd8 9. Be3 cxd4 10. Nxd4 Bg6 11. Qa4 Nge7 12. Rd1 Qa5 13. Qxa5 Nxa5 14. Ndb5 Nd5 15. Nxd5 exd5 16. Nc7+ Kd7 17. Nxa8 Nc6 18. Bg4+ Ke8 19. Nc7+ Kd8 20. Nxd5 1-0

[Event "NED-ch U16 Girls"]
[Site "Assen"]
[Date "2017.04.26"]
[Round "4"]
[White "Kroon, Gerbrich"]
[Black "Kalkman, Lorena"]
[Result "0-1"]
[ECO "B50"]
[WhiteElo "1437"]
[BlackElo "1620"]
[PlyCount "78"]
[EventDate "2017.04.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 178 Extra"]
[Source "ChessBase"]
[SourceDate "2017.06.22"]
[SourceVersion "1"]
[SourceVersionDate "2017.06.22"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. g3 Nf6 4. d3 e6 5. Bg2 g6 6. 0-0 Nc6 7. Nbd2 Bg7 8. c3 d5 9. Re1 0-0 10. h3 b6 11. g4 Bb7 12. e5 Nd7 13. d4 Re8 14. Nf1 f6 15. exf6 Nxf6 16. Ng3 cxd4 17. cxd4 Nd7 18. Bg5 Bf6 19. Bxf6 Qxf6 20. Qd2 Re7 21. Rad1 Rf8 22. a3 Ndb8 23. h4 Qf4 24. g5 Na5 25. h5 Nc4 26. Qb4 Nc6 27. Qc3 Nd6 28. hxg6 hxg6 29. Qd3 Kg7 30. Re2 Nb8 31. Rde1 Ba6 32. Qc2 Bxe2 33. Rxe2 Rc8 34. Qd3 Rc1+ 35. Bf1 Rcc7 36. Bg2 Nd7 37. Re1 Nf8 38. Re5 Nf7 39. Ne2 Nxe5 0-1

[Event "NED-ch U16 Girls"]
[Site "Assen"]
[Date "2017.04.25"]
[Round "3"]
[White "Kroon, Gerbrich"]
[Black "Martinez, Anna"]
[Result "0-1"]
[ECO "A04"]
[WhiteElo "1437"]
[BlackElo "1781"]
[PlyCount "58"]
[EventDate "2017.04.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 178 Extra"]
[Source "ChessBase"]
[SourceDate "2017.06.22"]
[SourceVersion "1"]
[SourceVersionDate "2017.06.22"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. g3 g6 4. Bg2 Bg7 5. 0-0 e6 6. d3 Nge7 7. c3 0-0 8. d4 cxd4 9. cxd4 Qb6 10. Nc3 Nxd4 11. Nxd4 Qxd4 12. Qe2 f5 13. Be3 Qe5 14. h4 fxe4 15. Bxe4 d5 16. Bf4 Qd4 17. Bd3 Bd7 18. Rad1 Qb6 19. h5 Nf5 20. Rd2 Nd4 21. Qd1 g5 22. Be3 Nf3+ 23. Kg2 d4 24. Re2 Bc6 25. Ne4 dxe3 26. Rxe3 g4 27. Bc4 Rad8 28. Bxe6+ Kh8 29. Rd3 Bxe4 0-1

[Event "NED-ch U16 Girls"]
[Site "Assen"]
[Date "2017.04.24"]
[Round "2"]
[White "Duson, Robin"]
[Black "Kroon, Gerbrich"]
[Result "1-0"]
[ECO "B17"]
[WhiteElo "1854"]
[BlackElo "1437"]
[PlyCount "75"]
[EventDate "2017.04.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 178 Extra"]
[Source "ChessBase"]
[SourceDate "2017.06.22"]
[SourceVersion "1"]
[SourceVersionDate "2017.06.22"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nd7 5. Nf3 Ngf6 6. Ng3 g6 7. Bd3 Bg7 8. Qe2 0-0 9. Bd2 Qb6 10. 0-0-0 Re8 11. c4 Qc7 12. Bc3 Nb6 13. Ba5 Qd7 14. Rhe1 e6 15. Bc2 Qe7 16. Ne5 c5 17. Bc3 cxd4 18. Bxd4 Nbd7 19. f4 Bh6 20. Qf3 Qb4 21. Kb1 Bg7 22. Bc3 Qb6 23. Ba4 Rd8 24. Rd2 Nc5 25. Rxd8+ Qxd8 26. Rd1 Qc7 27. Bc2 Nfd7 28. Qe3 Nxe5 29. fxe5 Nd7 30. Re1 Qxc4 31. Qg5 Qc5 32. Ne4 Qc7 33. Nd6 b6 34. Qe7 Ba6 35. Qxf7+ Kh8 36. Ne8 Rxe8 37. Qxe8+ Nf8 38. Bb4 1-0

[Event "NED-ch U16 Girls"]
[Site "Assen"]
[Date "2017.04.23"]
[Round "1"]
[White "Kroon, Gerbrich"]
[Black "Schelleman, Iris"]
[Result "1-0"]
[ECO "C54"]
[WhiteElo "1437"]
[BlackElo "1732"]
[PlyCount "123"]
[EventDate "2017.04.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 178 Extra"]
[Source "ChessBase"]
[SourceDate "2017.06.22"]
[SourceVersion "1"]
[SourceVersionDate "2017.06.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d3 0-0 6. Bg5 Re8 7. Bb3 a6 8. Nbd2 h6 9. Bh4 g5 10. Bg3 d5 11. Qe2 Bg4 12. 0-0-0 d4 13. Kb1 Bh5 14. h3 Kg7 15. h4 g4 16. Nh2 b5 17. f3 Qd7 18. Rdf1 Re7 19. Bc2 a5 20. Nb3 Bb6 21. a3 dxc3 22. bxc3 b4 23. axb4 axb4 24. Qd2 bxc3 25. Qxc3 Nd4 26. Bf2 Qa4 27. Nxd4 Qa2+ 28. Kc1 exd4 29. Bxd4 Bxd4 30. Qxd4 Rd7 31. Qb2 Qa7 32. fxg4 Qa1+ 33. Qxa1 Rxa1+ 34. Kb2 Rxf1 35. Rxf1 Nxg4 36. Nxg4 Bxg4 37. Kc3 Rd6 38. Bb3 Be6 39. Bxe6 fxe6 40. e5 Rc6+ 41. Kd4 Rc2 42. g4 c5+ 43. Ke3 Rb2 44. Rf6 Rb6 45. Kd2 Rb4 46. Rxe6 Rxg4 47. Rc6 Rxh4 48. Rxc5 Kf7 49. Ke3 Ke6 50. d4 Rh3+ 51. Ke4 Rh4+ 52. Kd3 h5 53. Rc6+ Kd7 54. Rd6+ Ke7 55. Kc4 Rh1 56. Rh6 h4 57. Rh7+ Ke6 58. Rh6+ Ke7 59. Kd5 h3 60. Rh7+ Ke8 61. Ke6 Kd8 62. d5 1-0

[Event "NED-ch U16 Girls"]
[Site "Rotterdam"]
[Date "2016.05.07"]
[Round "7"]
[White "Waardenburg, Feline"]
[Black "Kroon, Gerbrich"]
[Result "1/2-1/2"]
[ECO "A15"]
[WhiteElo "1602"]
[BlackElo "1115"]
[PlyCount "92"]
[EventDate "2016.05.01"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 172 Extra"]
[Source "ChessBase"]
[SourceDate "2016.06.21"]
[SourceVersion "1"]
[SourceVersionDate "2016.06.21"]
[SourceQuality "1"]

1. Nf3 Nf6 2. g3 b6 3. Bg2 Bb7 4. c4 e6 5. 0-0 Bc5 6. d4 Be7 7. Nc3 d5 8. e3 c5 9. cxd5 Nxd5 10. Ne2 Nf6 11. Qa4+ Bc6 12. Qc2 0-0 13. Rd1 Qc7 14. b3 Na6 15. Bb2 Qb7 16. Ne1 Bxg2 17. Nxg2 Nb4 18. Qb1 cxd4 19. Nxd4 Rac8 20. a3 Nbd5 21. Qd3 Rfd8 22. Qe2 Nc3 23. Bxc3 Rxc3 24. b4 Rdc8 25. Ne1 a5 26. bxa5 bxa5 27. Nb5 Rb3 28. a4 Nd5 29. Qa2 Rb4 30. Rdc1 h6 31. Nd3 Rg4 32. Rxc8+ Qxc8 33. Rc1 Qb7 34. h3 Rg5 35. Kh2 Qb8 36. f4 Rf5 37. e4 Nxf4 38. Nxf4 Rxf4 39. Rc7 Rf3 40. Qg2 Bd8 41. Rd7 Rb3 42. e5 Qxe5 43. Rxd8+ Kh7 44. Qc2+ g6 45. Qf2 Rb2 46. Rd2 Rxd2 1/2-1/2

[Event "NED-ch U16 Girls"]
[Site "Rotterdam"]
[Date "2016.05.06"]
[Round "6"]
[White "Boekhoudt, Nicolien"]
[Black "Kroon, Gerbrich"]
[Result "1/2-1/2"]
[ECO "B12"]
[WhiteElo "1099"]
[BlackElo "1115"]
[PlyCount "141"]
[EventDate "2016.05.01"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 172 Extra"]
[Source "ChessBase"]
[SourceDate "2016.06.21"]
[SourceVersion "1"]
[SourceVersionDate "2016.06.21"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. Bd3 Bxd3 5. Qxd3 e6 6. Bd2 Nd7 7. Nf3 Ne7 8. Nc3 c5 9. Nb5 Ng6 10. Bg5 Qb6 11. Nc3 cxd4 12. Qxd4 Qxd4 13. Nxd4 a6 14. 0-0 h6 15. Bd2 Be7 16. f4 Bc5 17. Be3 Nb6 18. b3 0-0 19. Rae1 Rac8 20. Nce2 Bb4 21. Rc1 Nd7 22. c3 Be7 23. Nf3 Nc5 24. Nd2 Nh4 25. Bf2 Nf5 26. Nd4 Nd3 27. Nxf5 exf5 28. Rc2 Nxf4 29. Be3 Ne2+ 30. Kh1 Nxc3 31. Rfc1 Ba3 32. Rf1 Ne4 33. Rxc8 Rxc8 34. Nf3 Rc3 35. Re1 Bc5 36. Bxc5 Rxc5 37. Nd4 g6 38. h3 Rc3 39. Ne2 Rd3 40. Nf4 Rd2 41. e6 fxe6 42. Nxe6 Rxa2 43. Nf4 Kf7 44. Nxd5 Re2 45. Rc1 Rd2 46. Nf4 Rd1+ 47. Rxd1 Nf2+ 48. Kh2 Nxd1 49. Nd3 b5 50. Kg1 Kf6 51. Kf1 a5 52. Ke1 Ne3 53. Kf2 Nc2 54. Nc5 Ke5 55. Ke2 Kd5 56. Nb7 Nd4+ 57. Kd3 Nxb3 58. Kc3 a4 59. Nd8 g5 60. Nf7 g4 61. hxg4 fxg4 62. Nxh6 Nc5 63. Nxg4 Ne6 64. Kb4 Kd4 65. Nf2 Ke3 66. Nd1+ Kf4 67. Nb2 Nc5 68. Kxc5 a3 69. Nd3+ Kg3 70. Nb4 Kxg2 71. Kxb5 1/2-1/2

[Event "NED-ch U16 Girls"]
[Site "Rotterdam"]
[Date "2016.05.05"]
[Round "5"]
[White "Kroon, Gerbrich"]
[Black "Wang, Bi Rong"]
[Result "1-0"]
[ECO "C54"]
[WhiteElo "1115"]
[BlackElo "1013"]
[PlyCount "65"]
[EventDate "2016.05.01"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 172 Extra"]
[Source "ChessBase"]
[SourceDate "2016.06.21"]
[SourceVersion "1"]
[SourceVersionDate "2016.06.21"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Bc5 5. c3 a5 6. a4 0-0 7. Bg5 Qe7 8. Nbd2 h6 9. Bh4 d6 10. Bb3 Be6 11. Bc2 Rad8 12. 0-0 Rfe8 13. h3 Rc8 14. Nh2 Nd8 15. Ng4 Bxg4 16. hxg4 g5 17. Bg3 Qe6 18. Nc4 Nc6 19. Ne3 Bxe3 20. fxe3 Nxg4 21. Bb3 Nxe3 22. Bxe6 Nxd1 23. Bxf7+ Kg7 24. Bxe8 Ne3 25. Rf3 Nc2 26. Rc1 N2d4 27. cxd4 Nxd4 28. Rf7+ Kg8 29. Rcxc7 Rxe8 30. Rxb7 Rc8 31. Rg7+ Kf8 32. Rh7 Kg8 33. Rxh6 1-0

[Event "NED-ch U16 Girls"]
[Site "Rotterdam"]
[Date "2016.05.04"]
[Round "4"]
[White "Schelleman, Iris"]
[Black "Kroon, Gerbrich"]
[Result "1-0"]
[ECO "B12"]
[WhiteElo "1706"]
[BlackElo "1115"]
[PlyCount "47"]
[EventDate "2016.05.01"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 172 Extra"]
[Source "ChessBase"]
[SourceDate "2016.06.21"]
[SourceVersion "1"]
[SourceVersionDate "2016.06.21"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. f3 dxe4 4. fxe4 e6 5. Nf3 Nd7 6. Bc4 Nb6 7. Bb3 Be7 8. 0-0 c5 9. c3 cxd4 10. cxd4 Nf6 11. Nc3 0-0 12. Bc2 Re8 13. Qd3 g6 14. Ng5 Rf8 15. Nf3 Qc7 16. h3 Bd7 17. Bh6 Rfd8 18. Ne5 Bc6 19. Nxf7 Kxf7 20. e5 Qd7 21. exf6 Bxf6 22. Bg5 Qe7 23. Bxf6 Qd6 24. Be5+ 1-0

[Event "NED-ch U16 Girls"]
[Site "Rotterdam"]
[Date "2016.05.03"]
[Round "3"]
[White "Kroon, Gerbrich"]
[Black "Kalkman, Lorena"]
[Result "1-0"]
[ECO "B50"]
[WhiteElo "1115"]
[BlackElo "1270"]
[PlyCount "119"]
[EventDate "2016.05.01"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 172 Extra"]
[Source "ChessBase"]
[SourceDate "2016.06.21"]
[SourceVersion "1"]
[SourceVersionDate "2016.06.21"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. g3 Nf6 4. d3 e6 5. Bg2 a6 6. 0-0 Be7 7. Re1 Nbd7 8. Nbd2 0-0 9. h4 Qc7 10. Nf1 b5 11. N1h2 Nb6 12. Nd2 Bb7 13. Ndf1 Nfd7 14. Ng4 c4 15. Bd2 Nf6 16. Nfe3 Rfd8 17. Bc3 Nbd7 18. h5 cxd3 19. cxd3 e5 20. h6 g6 21. Rc1 Qb6 22. Qd2 Rdc8 23. Qd1 Qd8 24. Nf1 Nxg4 25. Qxg4 Bg5 26. Bd2 Bxd2 27. Nxd2 Nc5 28. Re3 Qe7 29. Nf3 Rc7 30. d4 Bc8 31. Qh4 Qxh4 32. gxh4 exd4 33. Nxd4 Raa7 34. e5 dxe5 35. Rxe5 Ne6 36. Rxc7 Rxc7 37. Bh3 Re7 38. a3 Kf8 39. Bxe6 Bxe6 40. Nxe6+ fxe6 41. Kg2 Kf7 42. Kg3 Rd7 43. Rc5 Ke7 44. Rc6 Ra7 45. Kg4 Kd7 46. Rb6 Ke7 47. Kf4 Kf6 48. f3 Rd7 49. Rxa6 Rd4+ 50. Kg3 Rd7 51. Rb6 Rd5 52. Rb7 g5 53. Rxh7 gxh4+ 54. Kxh4 Kg6 55. Rh8 Rh5+ 56. Kg4 Rxh6 57. Rxh6+ Kxh6 58. Kf4 Kg6 59. Ke5 Kf7 60. Kd6 1-0

[Event "NED-ch U16 Girls"]
[Site "Rotterdam"]
[Date "2016.05.02"]
[Round "2"]
[White "Koning, Femke"]
[Black "Kroon, Gerbrich"]
[Result "1/2-1/2"]
[ECO "C02"]
[WhiteElo "1162"]
[BlackElo "1115"]
[PlyCount "23"]
[EventDate "2016.05.01"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 172 Extra"]
[Source "ChessBase"]
[SourceDate "2016.06.21"]
[SourceVersion "1"]
[SourceVersionDate "2016.06.21"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Bd7 6. Be3 cxd4 7. cxd4 Nge7 8. Bd3 Ng6 9. Nc3 Be7 10. 0-0 0-0 11. Qd2 f6 12. exf6 1/2-1/2

[Event "NED-ch U16 Girls"]
[Site "Rotterdam"]
[Date "2016.05.01"]
[Round "1"]
[White "Kroon, Gerbrich"]
[Black "Lu, Ting Ting"]
[Result "1/2-1/2"]
[ECO "C55"]
[WhiteElo "1115"]
[BlackElo "1470"]
[PlyCount "82"]
[EventDate "2016.05.01"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 172 Extra"]
[Source "ChessBase"]
[SourceDate "2016.06.21"]
[SourceVersion "1"]
[SourceVersionDate "2016.06.21"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Be7 5. c3 0-0 6. Nbd2 d5 7. exd5 Nxd5 8. Ne4 h6 9. 0-0 a6 10. Re1 Be6 11. Ng3 Bd6 12. Qb3 Na5 13. Qc2 Nxc4 14. dxc4 Nb6 15. Nxe5 Nxc4 16. Nxc4 Bxc4 17. Bd2 Qd7 18. b3 Be6 19. Qc1 Kh7 20. Ne4 Be7 21. Rd1 Qc6 22. Qc2 Kg8 23. Re1 Rad8 24. Ng3 Bf6 25. Rad1 Bc8 26. c4 b5 27. Be3 Bb7 28. f3 Rfe8 29. Rxd8 Rxd8 30. Qe4 Qxe4 31. Nxe4 Be7 32. cxb5 axb5 33. Rc1 c6 34. Kf2 f5 35. Nc3 Bh4+ 36. g3 Bf6 37. Ne2 g5 38. Rc5 Rd5 39. f4 g4 40. Kg2 Kf7 41. h3 h5 1/2-1/2

[Event "NED-ch U15 Girls"]
[Site "Rotterdam"]
[Date "2015.05.09"]
[Round "9"]
[White "Kroon, Gerbrich"]
[Black "Duson, Robin"]
[Result "0-1"]
[ECO "C54"]
[PlyCount "94"]
[EventDate "2015.05.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Bc5 5. c3 d6 6. Bb3 0-0 7. Bg5 h6 8. Bh4 g5 9. Bg3 Nh5 10. Nbd2 Qf6 11. Qe2 Be6 12. Rd1 Bb6 13. Nc4 Bxc4 14. dxc4 Ne7 15. Nd2 Nxg3 16. hxg3 Kg7 17. g4 Qf4 18. Nf1 Ng6 19. Ng3 Kh7 20. Nf5 Nh4 21. Kf1 Nxf5 22. gxf5 g4 23. Rh5 g3 24. f3 Qe3 25. Qxe3 Bxe3 26. Rh4 f6 27. Ke2 Bf4 28. Ba4 Rad8 29. b4 a6 30. a3 Ra8 31. Bb3 Rfd8 32. Rg4 c5 33. Rg6 Bg5 34. Rd5 Rac8 35. Rd1 b5 36. Kd3 cxb4 37. cxb4 Re8 38. Rh1 Re7 39. cxb5 axb5 40. Rd1 Rec7 41. Ke2 Rc3 42. Be6 Rc2+ 43. Ke1 Rd8 44. Bb3 Rxg2 45. Kf1 Rf2+ 46. Kg1 Be3 47. Kh1 Rh2# 0-1

[Event "NED-ch U15 Girls"]
[Site "Rotterdam"]
[Date "2015.05.08"]
[Round "8"]
[White "Kroon, Gerbrich"]
[Black "Monteny, Pascalle"]
[Result "1/2-1/2"]
[ECO "C54"]
[BlackElo "1467"]
[PlyCount "88"]
[EventDate "2015.05.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Bc5 5. c3 d6 6. Bb3 Bg4 7. h3 Bh5 8. Nbd2 0-0 9. Qe2 Re8 10. Nf1 h6 11. g4 Bg6 12. Ng3 Qd7 13. Nh4 Kh8 14. Nhf5 Ne7 15. Qd2 Bxf5 16. gxf5 Rf8 17. Qe2 Kh7 18. Rg1 Neg8 19. Nh5 Nxh5 20. Qxh5 Qe7 21. Bg5 f6 22. Qg6+ Kh8 23. Bh4 Rad8 24. 0-0-0 c6 25. Rg2 d5 26. exd5 cxd5 27. Rdg1 Rd7 28. Qh5 Qf7 29. Qf3 Qe7 30. Rxg7 Qxg7 31. Rxg7 Rxg7 32. Bxd5 b6 33. Bxg8 Rgxg8 34. Qh5 Kh7 35. b4 Bd6 36. Bg3 Be7 37. Qe2 Rc8 38. Kb2 Bf8 39. Qe4 Rg7 40. Kb3 Rgc7 41. c4 Rd7 42. Bh4 Bg7 43. Qf3 Rcd8 44. Kc3 Ra8 1/2-1/2

[Event "NED-ch U15 Girls"]
[Site "Rotterdam"]
[Date "2015.05.07"]
[Round "7"]
[White "Vervaeck, Anna"]
[Black "Kroon, Gerbrich"]
[Result "0-1"]
[ECO "B12"]
[PlyCount "138"]
[EventDate "2015.05.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. h4 h5 5. Bd3 Bxd3 6. Qxd3 e6 7. Nf3 Nd7 8. Nc3 c5 9. dxc5 Bxc5 10. Be3 a6 11. Bxc5 Nxc5 12. Qe2 Ne7 13. 0-0 Ng6 14. g3 Nd7 15. Rad1 Qc7 16. Rfe1 Rc8 17. a3 Qb6 18. Na4 Qc6 19. Nc3 Nb6 20. Qd3 Nc4 21. Rb1 b5 22. Qe2 Nxa3 23. bxa3 Qxc3 24. Ra1 Qxc2 25. Qxc2 Rxc2 26. a4 0-0 27. axb5 axb5 28. Nd4 Rb2 29. Rab1 Rxb1 30. Rxb1 Nxe5 31. Rxb5 Ra8 32. Rb1 Ra4 33. Nc2 Ng4 34. Ne1 Ra2 35. Nd3 Rd2 36. Ne1 Nxf2 37. Nf3 Nh3+ 38. Kh1 Ra2 39. Rc1 Nf2+ 40. Kg1 Ne4 41. Rb1 Ra3 42. Ne1 d4 43. Rd1 e5 44. Nc2 Rxg3+ 45. Kf1 d3 46. Nb4 d2 47. Nc6 Rd3 48. Ke2 Rd6 49. Ne7+ Kh7 50. Ra1 Nc3+ 51. Ke3 d1Q 52. Rxd1 Nxd1+ 53. Ke2 e4 54. Nf5 Rd5 55. Ne7 Rd7 56. Nf5 g6 57. Ng3 e3 58. Ne4 Rd8 59. Nf6+ Kg7 60. Ne4 f5 61. Nc5 Kf6 62. Nb7 Rd4 63. Na5 f4 64. Kf3 Rd5 65. Nb7 Re5 66. Ke2 f3+ 67. Kxf3 e2 68. Kf4 e1Q 69. Nd8 Qf2# 0-1

[Event "NED-ch U15 Girls"]
[Site "Rotterdam"]
[Date "2015.05.06"]
[Round "6"]
[White "Warnaar, Alisha"]
[Black "Kroon, Gerbrich"]
[Result "0-1"]
[ECO "B17"]
[PlyCount "106"]
[EventDate "2015.05.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nd7 5. Bf4 Ngf6 6. Bd3 e6 7. c4 b6 8. Nd6+ Bxd6 9. Bxd6 Bb7 10. Nf3 c5 11. dxc5 Nxc5 12. Be2 Nfe4 13. Be5 0-0 14. 0-0 Rc8 15. Qc2 Nf6 16. Rad1 Qe8 17. Bd6 Nce4 18. Bxf8 Qxf8 19. Qa4 a6 20. Qb3 Qc5 21. Qd3 h6 22. Nd2 Qg5 23. Nxe4 Bxe4 24. Qg3 Qc5 25. b3 Bg6 26. Bf3 Kh8 27. Rd2 Be4 28. Qf4 Bf5 29. Bb7 Re8 30. Bxa6 Qa5 31. Bb5 Rc8 32. Rfd1 Qa8 33. Qf3 Be4 34. Qg3 Nh5 35. Qh4 Nf6 36. f3 Bg6 37. Qd4 Qb7 38. Qe3 Qb8 39. Rd6 Qa7 40. a4 Kh7 41. Qxb6 Qe7 42. b4 Nh5 43. a5 Nf4 44. Rd7 Qg5 45. R7d2 Bh5 46. Kf1 Qh4 47. g3 Qh3+ 48. Kg1 Bxf3 49. Re1 Qg4 50. Kf1 Nh3 51. Qd4 Qf5 52. c5 Bc6+ 53. Ke2 Qf3# 0-1

[Event "NED-ch U15 Girls"]
[Site "Rotterdam"]
[Date "2015.05.05"]
[Round "5"]
[White "Kroon, Gerbrich"]
[Black "Wang, Bi Rong"]
[Result "1/2-1/2"]
[ECO "C54"]
[PlyCount "66"]
[EventDate "2015.05.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 d6 5. d3 Nf6 6. Bg5 h6 7. Bh4 Bg4 8. b4 Bb6 9. a4 a6 10. Nbd2 Qe7 11. 0-0 0-0 12. h3 Be6 13. b5 axb5 14. axb5 Na5 15. Ba2 Bxa2 16. Rxa2 Qe6 17. c4 Nh5 18. Nb1 g5 19. Bxg5 hxg5 20. Nxg5 Qg6 21. Qg4 f6 22. Ne6 Qxg4 23. hxg4 Rfe8 24. Nxc7 Bxc7 25. gxh5 Kf7 26. g4 Bb6 27. Kh2 Rg8 28. f3 Rg5 29. Nc3 Rag8 30. Nd5 Bd8 31. Ne3 Ke6 32. Rb1 b6 33. Nf5 Rh8 1/2-1/2

[Event "NED-ch U15 Girls"]
[Site "Rotterdam"]
[Date "2015.05.04"]
[Round "4"]
[White "Kalkman, Lorena"]
[Black "Kroon, Gerbrich"]
[Result "1-0"]
[ECO "B13"]
[PlyCount "123"]
[EventDate "2015.05.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. c4 dxc4 5. Qa4+ Bd7 6. Qxc4 e6 7. Nf3 Nf6 8. Qc2 Bd6 9. Nc3 0-0 10. Bd3 Nc6 11. a3 Ne7 12. Ng5 Ng6 13. g3 Bc6 14. Nge4 Nxe4 15. Bxe4 Bxe4 16. Qxe4 Qb6 17. 0-0 Rfe8 18. Rb1 Rac8 19. Be3 Qc6 20. Qd3 Rcd8 21. Rfc1 e5 22. Ne2 e4 23. Qb3 Qd7 24. Nc3 Ne7 25. Nxe4 Nf5 26. f3 Be7 27. Rd1 Qe6 28. Qxe6 fxe6 29. Kf2 Rd7 30. Rd2 Red8 31. Rbd1 b6 32. Ke2 Nd6 33. Nxd6 Rxd6 34. Bf4 R6d7 35. Be5 a5 36. Rc1 b5 37. Rc7 Kf7 38. Rxd7 Rxd7 39. Rc2 Bd6 40. Bxd6 Rxd6 41. Ke3 Rd5 42. Rc5 Rxc5 43. dxc5 Ke7 44. b4 a4 45. Ke4 Kd7 46. Ke5 h6 47. h4 h5 48. f4 Ke7 49. f5 exf5 50. Kxf5 Kf7 51. Ke5 Ke7 52. c6 Kd8 53. Kd6 Kc8 54. Kc5 Kc7 55. Kxb5 g6 56. Kc5 Kc8 57. b5 Kc7 58. b6+ Kb8 59. Kd6 Kc8 60. b7+ Kb8 61. Kd7 Ka7 62. c7 1-0

[Event "NED-ch U15 Girls"]
[Site "Rotterdam"]
[Date "2015.05.03"]
[Round "2"]
[White "Fransen, Giselle"]
[Black "Kroon, Gerbrich"]
[Result "0-1"]
[ECO "B13"]
[PlyCount "94"]
[EventDate "2015.05.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. e4 c6 2. Nf3 d5 3. exd5 cxd5 4. d4 Bf5 5. Bf4 e6 6. Bd3 Bxd3 7. Qxd3 Nf6 8. Nbd2 Be7 9. c3 Nc6 10. Qb5 Qd7 11. Qd3 h6 12. h3 0-0 13. 0-0 Rfe8 14. Rfe1 Bd6 15. Be5 Qe7 16. Rad1 Bxe5 17. Nxe5 Nxe5 18. Rxe5 Nd7 19. Ree1 Rac8 20. Nf3 Qf6 21. Qb5 Rc7 22. Qd3 a6 23. Ne5 Nb6 24. Re3 Qf5 25. Qxf5 exf5 26. Rde1 Rce7 27. Nd3 Rxe3 28. Rxe3 Rxe3 29. fxe3 Nc4 30. Kf2 Kf8 31. b3 Nd6 32. Ke1 Ne4 33. c4 dxc4 34. bxc4 Ke7 35. Nc1 Kd7 36. Ne2 b6 37. Nc1 Nd6 38. Kd2 Nxc4+ 39. Kd3 b5 40. Nb3 a5 41. Nc5+ Kc6 42. a4 Nb2+ 43. Kc2 Nxa4 44. Nxa4 bxa4 45. Kc3 Kd5 46. g3 g5 47. g4 f4 0-1

[Event "NED-ch U15 Girls"]
[Site "Rotterdam"]
[Date "2015.05.03"]
[Round "3"]
[White "Kroon, Gerbrich"]
[Black "Waardenburg, Marlinde"]
[Result "0-1"]
[ECO "C55"]
[PlyCount "126"]
[EventDate "2015.05.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Be7 5. c3 0-0 6. Bb3 d5 7. 0-0 Bg4 8. Nbd2 Qd7 9. Qe2 d4 10. Rd1 Rad8 11. Nf1 Rfe8 12. Ng3 Bc5 13. h3 Be6 14. Bc2 Bb6 15. Bg5 h6 16. Bxf6 gxf6 17. Nh5 Qe7 18. Nh4 Kh7 19. Qf3 Rf8 20. Nxf6+ Kg7 21. Nh5+ Kh8 22. Nf5 Bxf5 23. Qxf5 Rg8 24. Qf6+ Qxf6 25. Nxf6 Rg6 26. Nh5 Rdg8 27. Ng3 dxc3 28. Kf1 cxb2 29. Rab1 Bd4 30. Bb3 Rf8 31. Ne2 Bb6 32. Rxb2 f5 33. f3 Na5 34. Bd5 c6 35. exf5 Rd6 36. Be6 e4 37. Nf4 Rfd8 38. Rbd2 exf3 39. gxf3 Kh7 40. Kg2 Be3 41. Kg3 Bxd2 42. Rxd2 c5 43. Ne2 Rxd3 44. Rxd3 Rxd3 45. f6 Rd6 46. f7 Kg7 47. Nf4 Nc6 48. Kg4 Ne5+ 49. Kg3 Nxf7 50. Bc4 b6 51. Ne6+ Kf6 52. Nc7 Rd4 53. Be2 Ra4 54. Nd5+ Ke5 55. Nc3 Ra3 56. Ne4 Ng5 57. Nxg5 hxg5 58. Bc4 Kd4 59. Bb3 c4 60. Bc2 Rxa2 61. Bf5 c3 62. Be6 c2 63. Bxa2 c1Q 0-1

[Event "NED-ch U15 Girls"]
[Site "Rotterdam"]
[Date "2015.05.02"]
[Round "1"]
[White "Kroon, Gerbrich"]
[Black "Martinez, Anna"]
[Result "0-1"]
[ECO "B50"]
[PlyCount "122"]
[EventDate "2015.05.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. Bc4 Nf6 4. d3 g6 5. c3 Bg7 6. h3 Nc6 7. Bb3 0-0 8. 0-0 b6 9. Nbd2 Ba6 10. Bc2 Qc7 11. Re1 Nd7 12. Nf1 Rac8 13. Ng3 Nce5 14. Bf4 Nc6 15. Qd2 Rfd8 16. Bh6 Bh8 17. Rac1 b5 18. a3 Bf6 19. h4 Nde5 20. Nxe5 Nxe5 21. h5 d5 22. exd5 Rxd5 23. Bf4 Qb6 24. hxg6 hxg6 25. Ne4 Bg7 26. Bxe5 Bxe5 27. Qe3 Bg7 28. Nd2 Re5 29. Qf4 Rf5 30. Qg3 Bb7 31. d4 Rh5 32. dxc5 Rcxc5 33. Be4 Ba6 34. Nf3 Rh8 35. Bd3 Rch5 36. Kf1 b4 37. Bxa6 Qxa6+ 38. Re2 Rh1+ 39. Ng1 Rxg1+ 40. Kxg1 Qxe2 41. Qb8+ Kh7 42. Qh2+ Qh5 43. Qg3 Be5 44. Qh3 Qxh3 45. gxh3 bxc3 46. bxc3 Rc8 47. c4 Bb2 48. Rb1 Bxa3 49. Ra1 Bc5 50. Kg2 Bb6 51. Re1 Rxc4 52. Rxe7 Kg7 53. Re8 Rc2 54. h4 Bxf2 55. Kh3 Rc4 56. Re2 Bxh4 57. Ra2 g5 58. Rxa7 Rc3+ 59. Kg4 Kg6 60. Ra6+ f6 61. Ra3 f5# 0-1

[Event "NED-ch U12 op"]
[Site "Borne"]
[Date "2013.08.10"]
[Round "12"]
[White "Kroon, Gerbrich"]
[Black "Verbrugge, Luc"]
[Result "1-0"]
[ECO "C50"]
[WhiteElo "671"]
[BlackElo "656"]
[PlyCount "141"]
[EventDate "2013.08.05"]
[EventType "swiss"]
[EventRounds "13"]
[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. d3 d6 6. h3 h6 7. Be3 Bxe3 8. fxe3 0-0 9. Nc3 Be6 10. Bb5 Bd7 11. Nd5 Nxd5 12. exd5 Nb4 13. Bxd7 Qxd7 14. e4 Qa4 15. c3 Qxd1 16. Rfxd1 Nc2 17. Rac1 Ne3 18. Re1 Nxg2 19. Kxg2 c6 20. dxc6 bxc6 21. Rg1 Rab8 22. b4 c5 23. a3 cxb4 24. cxb4 Rbc8 25. Rxc8 Rxc8 26. Nh4 Rc2+ 27. Kh1 g5 28. Nf5 Kf8 29. Nxd6 Rc3 30. Rf1 Ke7 31. Nf5+ Kf8 32. Nxh6 Kg7 33. Nxf7 Rxd3 34. Nxg5 Rxa3 35. Ne6+ Kh6 36. Rf6+ Kh5 37. Ng7+ Kh4 38. Rh6+ Kg3 39. Rg6+ Kxh3 40. Kg1 Ra1+ 41. Kf2 Ra2+ 42. Ke3 Ra3+ 43. Kd2 Ra2+ 44. Kc3 a5 45. bxa5 Rxa5 46. Kc4 Ra4+ 47. Kd5 Ra5+ 48. Ke6 Ra6+ 49. Kf5 Ra5 50. Re6 Ra7 51. Ne8 Rf7+ 52. Kxe5 Rh7 53. Nf6 Rh6 54. Kd5 Kg3 55. Kd4 Rh4 56. Nd5 Kf3 57. Rf6+ Ke2 58. Rf4 Rh3 59. e5 Rd3+ 60. Ke4 Kd2 61. e6 Ra3 62. e7 Ra8 63. Rf8 Rxf8 64. exf8Q Kc2 65. Qf3 Kb2 66. Qd3 Ka2 67. Qb5 Ka1 68. Qb4 Ka2 69. Kd3 Ka1 70. Kc2 Ka2 71. Qb2# 1-0

[Event "NED-ch U12 op"]
[Site "Borne"]
[Date "2013.08.09"]
[Round "9"]
[White "Kroon, Gerbrich"]
[Black "Segers, Job"]
[Result "0-1"]
[ECO "C42"]
[WhiteElo "671"]
[BlackElo "841"]
[PlyCount "70"]
[EventDate "2013.08.05"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "NED"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. Qe2 Qe7 6. d3 Nf6 7. Bg5 Bg4 8. h3 Bxf3 9. Qxe7+ Bxe7 10. Bxf6 Bxf6 11. gxf3 Bxb2 12. c3 Bxa1 13. Bg2 0-0 14. 0-0 Re8 15. f4 Nc6 16. Rc1 Re2 17. Bd5 h6 18. Kf1 Re7 19. Nd2 Bb2 20. Rb1 Bxc3 21. Nc4 Rb8 22. Bxc6 b6 23. Bd5 Rbe8 24. Kg2 Re2 25. Rc1 Bd4 26. Kf1 Rxf2+ 27. Kg1 Rc2+ 28. Kh1 Rxc1+ 29. Kg2 Rg1+ 30. Kf3 Rf1+ 31. Kg4 g6 32. Kg3 Ree1 33. Nd2 Rg1+ 34. Kh2 Re2+ 35. Bg2 Rexg2# 0-1

[Event "NED-ch U12 op"]
[Site "Borne"]
[Date "2013.08.09"]
[Round "10"]
[White "Martinez, Anna"]
[Black "Kroon, Gerbrich"]
[Result "1-0"]
[ECO "D00"]
[WhiteElo "708"]
[BlackElo "671"]
[PlyCount "83"]
[EventDate "2013.08.05"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "NED"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. d4 c6 2. Nc3 d5 3. Nf3 Bf5 4. g3 e6 5. Bg2 Bb4 6. 0-0 Nf6 7. a3 Ba5 8. b4 Bb6 9. a4 0-0 10. Ng5 h6 11. Nf3 Qd6 12. Rb1 Bc7 13. Bb2 Qxb4 14. Ba1 Qd6 15. Qc1 Ba5 16. Qb2 Qb4 17. Qxb4 Bxb4 18. Rxb4 Bxc2 19. Rxb7 Bxa4 20. Nxa4 Na6 21. Nc5 Nxc5 22. dxc5 Ne4 23. Bd4 a5 24. Ne5 Rac8 25. Rb6 Nd2 26. Rd1 Ne4 27. Nxc6 a4 28. Ne7+ Kh8 29. Nxc8 Rxc8 30. Bxe4 dxe4 31. c6 a3 32. Ra1 a2 33. Rxa2 Kh7 34. Rc2 f5 35. c7 f4 36. gxf4 Kg6 37. Rb8 Rxb8 38. cxb8Q Kh7 39. Qc7 Kg6 40. Qxg7+ Kh5 41. h3 Kh4 42. Qg4# 1-0

[Event "NED-ch U12 op"]
[Site "Borne"]
[Date "2013.08.07"]
[Round "7"]
[White "Hematyar, Fardin"]
[Black "Kroon, Gerbrich"]
[Result "0-1"]
[ECO "B10"]
[WhiteElo "871"]
[BlackElo "671"]
[PlyCount "108"]
[EventDate "2013.08.05"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "NED"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. e4 c6 2. Nf3 d5 3. Bd3 dxe4 4. Bxe4 Bg4 5. h3 Bh5 6. Nc3 e6 7. d3 Be7 8. g4 Bg6 9. Qe2 Bxe4 10. Qxe4 Nf6 11. Qe2 0-0 12. Bd2 Nd5 13. h4 Nxc3 14. Bxc3 h6 15. 0-0-0 Nd7 16. Rdg1 Nf6 17. g5 hxg5 18. hxg5 Nh7 19. Bd2 Qd5 20. b3 Ba3+ 21. Kd1 f6 22. g6 Ng5 23. Nxg5 fxg5 24. Qh5 Qf3+ 25. Ke1 Qxf2+ 26. Kd1 Qf3+ 27. Qxf3 Rxf3 28. Rh2 Raf8 29. Ke1 Bd6 30. Rh5 Bg3+ 31. Ke2 Rf2+ 32. Ke3 R2f3+ 33. Ke4 R3f4+ 34. Bxf4 Rxf4+ 35. Ke3 Bf2+ 36. Ke2 Bxg1 37. Rxg5 Rf2+ 38. Kd1 Rf1+ 39. Kd2 b5 40. Re5 b4 41. d4 Bxd4 42. Rxe6 Bc3+ 43. Kd3 Rd1+ 44. Kc4 Rd4+ 45. Kc5 Rd8 46. Rxc6 Kf8 47. Kb5 Ke7 48. Rc7+ Rd7 49. Rxd7+ Kxd7 50. Ka6 Ke6 51. Kxa7 Kf6 52. Kb6 Kxg6 53. Kc5 Kf5 54. Kd5 g5 0-1

[Event "NED-ch U12 op"]
[Site "Borne"]
[Date "2013.08.06"]
[Round "2"]
[White "Kootstra, Harm Jan"]
[Black "Kroon, Gerbrich"]
[Result "1-0"]
[ECO "B10"]
[WhiteElo "845"]
[BlackElo "671"]
[PlyCount "69"]
[EventDate "2013.08.05"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "NED"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. e4 c6 2. Nf3 d5 3. exd5 cxd5 4. Bb5+ Bd7 5. Nc3 Bxb5 6. Nxb5 a6 7. Nbd4 e6 8. 0-0 Bc5 9. Re1 Ne7 10. c3 0-0 11. d3 h6 12. Bf4 Nd7 13. b4 Bb6 14. Bd6 Re8 15. Qa4 Nc8 16. Bf4 e5 17. Nxe5 Nxe5 18. Rxe5 Rxe5 19. Bxe5 f6 20. Bf4 Bxd4 21. cxd4 b5 22. Qb3 Qb6 23. Qxd5+ Kh8 24. Qxa8 Qe6 25. Qe4 Qg4 26. h3 Qd7 27. Re1 Nd6 28. Bxd6 Qxd6 29. Rc1 Qd7 30. Qc6 Qf5 31. Qc8+ Kh7 32. Qxf5+ Kg8 33. Qg6 Kf8 34. Rc7 Kg8 35. Rc8# 1-0

[Event "NED-ch U12 op"]
[Site "Borne"]
[Date "2013.08.06"]
[Round "3"]
[White "Kroon, Gerbrich"]
[Black "Gasimov, Rashad"]
[Result "0-1"]
[ECO "C57"]
[WhiteElo "671"]
[BlackElo "900"]
[PlyCount "80"]
[EventDate "2013.08.05"]
[EventType "swiss"]
[EventRounds "13"]
[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 Nf6 4. Ng5 d5 5. exd5 Nxd5 6. Nxf7 Kxf7 7. Qf3+ Ke8 8. Bxd5 Qf6 9. Qxf6 gxf6 10. 0-0 Nd4 11. Na3 Bxa3 12. bxa3 Nxc2 13. Rb1 Nd4 14. Bxb7 Bxb7 15. Rxb7 Ne2+ 16. Kh1 Rc8 17. Rxa7 Rg8 18. g3 f5 19. Re1 Nd4 20. Rxe5+ Kf8 21. a4 Rg5 22. Ba3+ Kg8 23. Re7 Nc6 24. f4 Rg4 25. Raxc7 Nxe7 26. Rxe7 Rd8 27. Bb2 Rxd2 28. Re8+ Kf7 29. Rb8 h5 30. Rb7+ Ke6 31. Rb6+ Kd5 32. Rb5+ Ke4 33. Rb3 h4 34. Rb4+ Kf3 35. Rb3+ Kf2 36. Bd4+ Rxd4 37. Rb1 hxg3 38. Rg1 Rdxf4 39. a5 gxh2 40. Kxh2 Rh4# 0-1

[Event "NED-ch U12 op"]
[Site "Borne"]
[Date "2013.08.06"]
[Round "4"]
[White "Plevier, Max"]
[Black "Kroon, Gerbrich"]
[Result "1-0"]
[ECO "B11"]
[WhiteElo "769"]
[BlackElo "671"]
[PlyCount "145"]
[EventDate "2013.08.05"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "NED"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. e4 c6 2. Nf3 d5 3. Nc3 dxe4 4. Nxe4 Bf5 5. Bd3 e6 6. b3 Bb4 7. Bb2 Ne7 8. Bxg7 Rg8 9. Bc3 Bxc3 10. dxc3 Rxg2 11. Nh4 Rg7 12. Nxf5 exf5 13. Nf6+ Kf8 14. Be2 Qb6 15. Qd3 Rg2 16. Qd4 Qxd4 17. cxd4 Kg7 18. Nh5+ Kh6 19. Nf4 Rg8 20. Bf3 Re8 21. Kd1 Nd7 22. d5 cxd5 23. Nxd5 Nxd5 24. Bxd5 Red8 25. Kc1 Rab8 26. Bxf7 Rbc8 27. Be6 Rc6 28. Bxf5 Rdc8 29. Bxd7 Rxc2+ 30. Kd1 R8c7 31. f3 Rf2 32. Bg4 Rcc2 33. f4 Rcd2+ 34. Ke1 Rg2 35. Bc8 Rge2+ 36. Kf1 Rf2+ 37. Kg1 Rg2+ 38. Kf1 Rdf2+ 39. Ke1 Rxh2 40. Rxh2+ Rxh2 41. Rd1 Rh1+ 42. Kd2 Rh2+ 43. Kc1 Rxa2 44. Bxb7 Ra1+ 45. Kc2 Ra2+ 46. Kb1 Rf2 47. Rc1 Rxf4 48. Kb2 Rb4 49. Bd5 a5 50. Ra1 Rb5 51. Bc6 Rc5 52. Be4 Re5 53. Bd3 Re3 54. Kc2 Rh3 55. Rxa5 Rh2+ 56. Kc3 Rh3 57. b4 Kg7 58. b5 Rh5 59. Ra6 Rc5+ 60. Kb4 Rd5 61. Bc4 Rd4 62. b6 Rd6 63. Kb5 Kf8 64. Ra7 Ke8 65. b7 Rd7 66. Kc6 Kd8 67. b8Q+ Ke7 68. Rxd7+ Kf6 69. Qe8 h5 70. Rf7+ Kg5 71. Qg8+ Kh4 72. Rf1 Kh3 73. Rh1# 1-0

[Event "NED-ch U12 op"]
[Site "Borne"]
[Date "2013.08.05"]
[Round "1"]
[White "Kroon, Gerbrich"]
[Black "Lu, Ting Ting"]
[Result "0-1"]
[ECO "C58"]
[WhiteElo "671"]
[BlackElo "1120"]
[PlyCount "110"]
[EventDate "2013.08.05"]
[EventType "swiss"]
[EventRounds "13"]
[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 Nf6 4. Ng5 d5 5. exd5 Na5 6. d3 Nxc4 7. dxc4 Bc5 8. 0-0 Bg4 9. Qe1 0-0 10. Qxe5 Re8 11. Qc3 h6 12. Nf3 Re2 13. Qd3 Re8 14. h3 Bh5 15. Nc3 Bg6 16. Qd2 Qd7 17. Nb5 a6 18. Nbd4 Ne4 19. Qd1 Re7 20. Re1 Rae8 21. a3 Nf6 22. Rxe7 Rxe7 23. Bf4 Nh5 24. Qd2 Nxf4 25. Qxf4 Re4 26. Qg3 Bxd4 27. Nxd4 Rxd4 28. Qc3 Re4 29. f3 Re2 30. Qb3 Qe7 31. Qc3 Rxc2 32. Qb3 Qe2 33. Qxc2 Bxc2 34. b4 Qe3+ 35. Kh1 Bb3 36. c5 Bxd5 37. Rd1 c6 38. a4 Qe2 39. Rd4 Qe1+ 40. Kh2 Qe5+ 41. Kh1 Qxd4 42. Kh2 Qxb4 43. a5 Qd2 44. Kg3 Qg5+ 45. Kf2 h5 46. Ke2 Qxg2+ 47. Ke3 Qxf3+ 48. Kd4 Qe4+ 49. Kc3 Qc4+ 50. Kd2 Qb3 51. Ke2 Bc4+ 52. Kd2 Qd3+ 53. Kc1 Bb3 54. Kb2 Qc2+ 55. Ka1 Qa2# 0-1

[Event "NED-ch U13 Girls"]
[Site "Rijswijk"]
[Date "2013.05.11"]
[Round "7"]
[White "Kroon, Gerbrich"]
[Black "Guis, Dianne"]
[Result "0-1"]
[ECO "C50"]
[PlyCount "116"]
[EventDate "2013.05.09"]
[EventType "swiss"]
[EventRounds "9"]
[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 Bb4 4. 0-0 Nf6 5. d3 0-0 6. a3 Bc5 7. b4 Bd4 8. Nxd4 Nxd4 9. Bg5 d6 10. Nc3 h6 11. Bh4 Be6 12. Bxe6 Nxe6 13. Nd5 Nxd5 14. Bxd8 Nxd8 15. exd5 c6 16. dxc6 Nxc6 17. b5 Nd4 18. a4 Rac8 19. Qd2 Nxc2 20. Rac1 Nd4 21. Rxc8 Rxc8 22. Rc1 Rxc1+ 23. Qxc1 Ne2+ 24. Kf1 Nxc1 25. Ke1 Nxd3+ 26. Ke2 Nf4+ 27. Kf3 a5 28. bxa6 bxa6 29. g3 Nd3 30. Ke2 e4 31. f3 d5 32. Kd2 Nb2 33. fxe4 dxe4 34. Ke3 Nxa4 35. Kxe4 a5 36. Kd4 Nb6 37. Kc5 a4 38. Kb4 h5 39. Ka3 h4 40. g4 Kh7 41. h3 Kh6 42. Kb4 Kg5 43. Ka3 f5 44. gxf5 Kxf5 45. Kb4 g5 46. Ka3 g4 47. hxg4+ Kxg4 48. Kb4 h3 49. Ka3 h2 50. Kb4 h1Q 51. Ka3 Qf3+ 52. Ka2 Qb3+ 53. Ka1 Qd1+ 54. Ka2 Qe2+ 55. Ka3 Qd3+ 56. Ka2 Nc4 57. Ka1 Qa3+ 58. Kb1 Qb2# 0-1

[Event "NED-ch U13 Girls"]
[Site "Rijswijk"]
[Date "2013.05.11"]
[Round "9"]
[White "Numans, Cassidy"]
[Black "Kroon, Gerbrich"]
[Result "0-1"]
[ECO "D02"]
[PlyCount "58"]
[EventDate "2013.05.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. d4 c6 2. Nf3 d5 3. Bf4 Bg4 4. Qd3 e6 5. Bg5 Qb6 6. Qc3 Bb4 7. Qxb4 Qxb4+ 8. c3 Qxb2 9. Ne5 Qxa1 10. Nxg4 Qxb1+ 11. Kd2 h6 12. Bf4 Qe4 13. e3 Nd7 14. Bd3 Qxg2 15. Rf1 Qxg4 16. Be2 Qh3 17. Rg1 g5 18. Bg4 Qh4 19. Be5 Nxe5 20. dxe5 Qxf2+ 21. Be2 Qxg1 22. h3 f6 23. exf6 Nxf6 24. a4 Ne4+ 25. Kd3 Qc1 26. Kd4 c5+ 27. Ke5 Qxe3 28. Bb5+ Ke7 29. c4 Nc3# 0-1

[Event "NED-ch U13 Girls"]
[Site "Rijswijk"]
[Date "2013.05.11"]
[Round "8"]
[White "Vogelaar, Elena"]
[Black "Kroon, Gerbrich"]
[Result "1/2-1/2"]
[ECO "B10"]
[PlyCount "160"]
[EventDate "2013.05.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. e4 c6 2. Bc4 d5 3. Be2 dxe4 4. d3 Nf6 5. Bg5 Bf5 6. Nc3 exd3 7. Bxd3 Bxd3 8. cxd3 e5 9. Nf3 Bc5 10. Qe2 0-0 11. 0-0 Be7 12. Nxe5 Nbd7 13. Rae1 h6 14. Bf4 Re8 15. d4 Bd6 16. Qc4 Qe7 17. Re3 Kh8 18. Nxf7+ Kh7 19. Rxe7 Bxe7 20. Qd3+ g6 21. Qh3 Kg7 22. Ne5 Nxe5 23. dxe5 Nh5 24. Be3 Rad8 25. e6 a6 26. Qg4 Nf6 27. Qh4 Nh5 28. Bd4+ Kh7 29. Qe4 c5 30. Qf3 cxd4 31. Qf7+ Kh8 32. Qxg6 Nf6 33. Qxh6+ Nh7 34. Ne4 Bf8 35. Qf4 Rxe6 36. Qf5 Rde8 37. Qd5 Rxe4 38. f3 Re2 39. Qxd4+ Bg7 40. Qd3 Rxb2 41. Rd1 Rf8 42. Re1 Rxa2 43. Re4 Rc8 44. h3 Rc3 45. Re8+ Nf8 46. Qf5 Ra1+ 47. Kh2 Rcc1 48. Qh5+ Kg8 49. Kg3 Re1 50. Qd5+ Kh8 51. Rc8 Ra4 52. Rc7 Be5+ 53. Kf2 Bxc7 54. Kxe1 Ra1+ 55. Ke2 Ra3 56. Qh5+ Kg7 57. Kf2 Ra2+ 58. Ke3 Ra3+ 59. Ke4 Nd7 60. Qg4+ Kf7 61. Qxd7+ Kf6 62. Qf5+ Ke7 63. Qh7+ Kd6 64. Qg6+ Kd7 65. Qf5+ Ke7 66. Qg5+ Kd6 67. Qe5+ Kd7 68. Qf5+ Ke7 69. Kd4 Ra4+ 70. Kc3 Ra3+ 71. Kc2 Ra2+ 72. Kb3 Ra5 73. Qe4+ Kd6 74. Qd4+ Ke6 75. Qc4+ Kd7 76. Qg4+ Kd6 77. Qd4+ Ke6 78. f4 Rb5+ 79. Kc3 Ba5+ 80. Kd3 Rd5 1/2-1/2

[Event "NED-ch U13 Girls"]
[Site "Rijswijk"]
[Date "2013.05.10"]
[Round "4"]
[White "Hulleman, Catharina"]
[Black "Kroon, Gerbrich"]
[Result "1-0"]
[ECO "B10"]
[PlyCount "61"]
[EventDate "2013.05.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. e4 c6 2. Nf3 d5 3. exd5 cxd5 4. Bb5+ Nc6 5. 0-0 e6 6. d4 a6 7. Bd3 Bb4 8. a3 Bd6 9. Be3 Nf6 10. Nc3 0-0 11. Ne1 h6 12. h3 e5 13. dxe5 Nxe5 14. Nf3 Nxf3+ 15. Qxf3 Qe7 16. Bd4 Be5 17. Bxe5 Qxe5 18. g3 Bxh3 19. Rfe1 Qg5 20. Qh1 Bf5 21. Re5 Ng4 22. Rxf5 Qd2 23. Qh5 g6 24. Qxg4 d4 25. Nd5 h5 26. Qf3 gxf5 27. Qxf5 Qh6 28. Ne7+ Kh8 29. Qe5+ Qg7 30. Qxh5+ Qh7 31. Qxh7# 1-0

[Event "NED-ch U13 Girls"]
[Site "Rijswijk"]
[Date "2013.05.10"]
[Round "5"]
[White "Kroon, Gerbrich"]
[Black "Kroon, Dominique"]
[Result "1/2-1/2"]
[ECO "B01"]
[PlyCount "67"]
[EventDate "2013.05.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. Nf3 Nf6 5. Bc4 Bf5 6. 0-0 c6 7. d4 e6 8. a3 Nbd7 9. b4 Qd8 10. Re1 Bd6 11. Nh4 Bg4 12. Qd3 Bb8 13. Nf3 0-0 14. Ne5 Qc7 15. Bf4 Bf5 16. Qg3 Nh5 17. Qh4 Nxf4 18. Qxf4 f6 19. Qxf5 fxe5 20. Qxe6+ Kh8 21. Qh3 exd4 22. Ne4 Nf6 23. Ng5 Qf4 24. Re6 Qxg5 25. Bd3 g6 26. Rae1 Bc7 27. Re7 Bd6 28. Rxb7 Rae8 29. Rb1 Qh5 30. Qxh5 Nxh5 31. g4 Nf4 32. Ba6 Re4 33. Rd1 Rfe8 34. f3 1/2-1/2

[Event "NED-ch U13 Girls"]
[Site "Rijswijk"]
[Date "2013.05.10"]
[Round "6"]
[White "Rijken, Danique"]
[Black "Kroon, Gerbrich"]
[Result "0-1"]
[ECO "B10"]
[PlyCount "44"]
[EventDate "2013.05.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. e4 c6 2. Nf3 d5 3. exd5 cxd5 4. Nc3 Nf6 5. Bb5+ Bd7 6. d3 e6 7. Bf4 Bb4 8. 0-0 0-0 9. Ne5 Bxb5 10. Nxb5 a6 11. Nd4 Nbd7 12. Ng4 Nxg4 13. Qxg4 Nf6 14. Qg3 Nh5 15. Qg4 Nxf4 16. Qxf4 Bd6 17. Qh4 Qb6 18. Nf3 Qxb2 19. Rfc1 Rac8 20. h3 Rxc2 21. Rxc2 Qxa1+ 22. Ne1 Qxe1# 0-1

[Event "NED-ch U13 Girls"]
[Site "Rijswijk"]
[Date "2013.05.09"]
[Round "2"]
[White "Kroon, Gerbrich"]
[Black "Kanapathi Pillai, Vinusha"]
[Result "1-0"]
[ECO "C42"]
[PlyCount "57"]
[EventDate "2013.05.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 Nxe4 4. Qe2 Nc6 5. Qxe4 Bb4 6. Nxc6+ Be7 7. Nxd8 0-0 8. Qxe7 h6 9. Bd3 b6 10. 0-0 d6 11. Re1 Be6 12. Nxe6 Rae8 13. Qh4 fxe6 14. Qe4 d5 15. Qh7+ Kf7 16. Bg6+ Ke7 17. Bxe8 Kxe8 18. Qxg7 Rf5 19. Rxe6+ Kd8 20. Qe7+ Kc8 21. Rc6 Kb7 22. Qxc7+ Ka6 23. b4 Kb5 24. c3 d4 25. Na3+ Ka4 26. Qxa7+ Ra5 27. Qxb6 Re5 28. Qa6+ Ra5 29. Qxa5# 1-0

[Event "NED-ch U13 Girls"]
[Site "Rijswijk"]
[Date "2013.05.09"]
[Round "3"]
[White "Kroon, Gerbrich"]
[Black "Van Harten, Eva"]
[Result "0-1"]
[ECO "B13"]
[PlyCount "130"]
[EventDate "2013.05.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. Nf3 Bg4 5. h3 Bh5 6. Bb5+ Nc6 7. 0-0 Nf6 8. Nc3 e6 9. Bg5 Bd6 10. Re1 0-0 11. Be2 h6 12. Bh4 a6 13. Nd2 Bxe2 14. Qxe2 Rc8 15. Qd3 Nb4 16. Qf3 Nxc2 17. Qd3 Nxa1 18. Rxa1 Be7 19. Qg3 Nh5 20. Qg4 Bxh4 21. Qxh5 Qg5 22. Qe2 Qf6 23. Nf3 Bg5 24. Nxg5 Qxg5 25. Re1 Rc4 26. Qd3 Qf4 27. Ne2 Qe4 28. Qb3 Rfc8 29. Qxb7 a5 30. Kf1 Qd3 31. g3 Rf8 32. Qb5 a4 33. b3 axb3 34. axb3 Rxd4 35. Qxd3 Rxd3 36. Nf4 Rxb3 37. h4 g5 38. hxg5 hxg5 39. Nh5 Rfb8 40. Nf6+ Kg7 41. Nh5+ Kf8 42. Nf6 Ke7 43. Nh7 Rb1 44. Nxg5 Rxe1+ 45. Kxe1 Kf6 46. Nh7+ Ke5 47. Kd2 f6 48. f4+ Kf5 49. Ke3 Rh8 50. Nxf6 Kxf6 51. g4 Rg8 52. g5+ Kf5 53. Kf3 e5 54. fxe5 Rxg5 55. e6 Kxe6 56. Ke3 Rg4 57. Kd3 Ke5 58. Ke3 Rg3+ 59. Kd2 Ke4 60. Ke2 Rg2+ 61. Kd1 Ke3 62. Kc1 Kd3 63. Kb1 Kc3 64. Ka1 Kb3 65. Kb1 Rg1# 0-1

[Event "NED-ch U13 Girls"]
[Site "Rijswijk"]
[Date "2013.05.09"]
[Round "1"]
[White "Monteny, Pascalle"]
[Black "Kroon, Gerbrich"]
[Result "1-0"]
[ECO "B13"]
[PlyCount "113"]
[EventDate "2013.05.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. Nf3 Bg4 5. Be2 e6 6. 0-0 Bd6 7. Nbd2 Nf6 8. h3 Bh5 9. c4 dxc4 10. Bxc4 Nc6 11. Qb3 Qc7 12. Qe3 0-0 13. b3 Bxf3 14. Nxf3 Nb4 15. Qe2 Nd7 16. a3 Nc6 17. Re1 e5 18. d5 Na5 19. Bd3 Nf6 20. b4 Nb3 21. Rb1 Nxc1 22. Rbxc1 Qb8 23. Be4 Nxe4 24. Qxe4 f5 25. Qh4 h6 26. Rcd1 e4 27. Nd4 Re8 28. Nxf5 Bh2+ 29. Kh1 Be5 30. d6 Bc3 31. Re3 Bf6 32. Qg4 Qc8 33. d7 Qc2 34. dxe8Q+ Rxe8 35. Nxh6+ Kf8 36. Nf5 Qxf2 37. Rxe4 Rc8 38. Re2 Qb6 39. Nd6 Rd8 40. Qe6 Qc7 41. Red2 a6 42. Qg4 Be7 43. Qf5+ Kg8 44. Qe6+ Kh7 45. Qf5+ Kg8 46. Ne4 Rf8 47. Qe6+ Kh8 48. Rd5 Qf4 49. Rh5+ Qh6 50. Rxh6+ gxh6 51. Qxh6+ Kg8 52. Rd7 Rf1+ 53. Kh2 Rf7 54. Ng5 Bxg5 55. Qg6+ Kh8 56. Qxf7 Bh6 57. Qh7# 1-0

