[Event "NED-ch U13"]
[Site "Rijswijk"]
[Date "2015.05.16"]
[Round "9"]
[White "Boghossian, Wahe"]
[Black "Koster, David"]
[Result "1/2-1/2"]
[ECO "C10"]
[PlyCount "69"]
[EventDate "2015.05.14"]
[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 e6 2. Nf3 d5 3. exd5 exd5 4. d4 Nf6 5. Be2 Nc6 6. Nc3 Bf5 7. a3 Ne4 8. Bd2 g6 9. 0-0 Bg7 10. Be1 0-0 11. b4 Bg4 12. b5 Bxf3 13. bxc6 Bxe2 14. Nxe2 bxc6 15. f3 Nd6 16. Bg3 Nc4 17. Qd3 c5 18. Rab1 cxd4 19. Nxd4 Qe7 20. Rb3 Qe3+ 21. Bf2 Qxd3 22. Rxd3 Rfd8 23. Nc6 Re8 24. Nxa7 d4 25. Nb5 Rec8 26. Ra1 c5 27. a4 f5 28. c3 dxc3 29. Nxc3 Nb2 30. Re3 Bd4 31. Nd5 Rf8 32. Re7 Rxa4 33. Rxa4 Nxa4 34. Bxd4 cxd4 35. Rd7 1/2-1/2

[Event "NED-ch U13"]
[Site "Rijswijk"]
[Date "2015.05.16"]
[Round "7"]
[White "Kanne, Kelvin"]
[Black "Koster, David"]
[Result "1/2-1/2"]
[ECO "C02"]
[PlyCount "52"]
[EventDate "2015.05.14"]
[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 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Qb6 6. a3 Bd7 7. b4 cxb4 8. cxb4 Nge7 9. Bb2 Nf5 10. Be2 Be7 11. g4 Nh4 12. Nbd2 Ng2+ 13. Kf1 Nf4 14. Nb3 Nxe2 15. Qxe2 Nxb4 16. Qd2 Na6 17. Qe3 Bb5+ 18. Kg2 Bc4 19. Nfd2 Bxb3 20. Qxb3 Qxb3 21. Nxb3 0-0 22. Na5 Rfc8 23. Rhc1 Bg5 24. Rxc8+ Rxc8 25. Kg3 b6 26. Nb7 Be7 1/2-1/2

[Event "NED-ch U13"]
[Site "Rijswijk"]
[Date "2015.05.16"]
[Round "8"]
[White "Koster, David"]
[Black "Hoeneveld, Maarten"]
[Result "0-1"]
[ECO "C42"]
[BlackElo "1762"]
[PlyCount "50"]
[EventDate "2015.05.14"]
[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 Nf6 3. Nc3 Bb4 4. d3 d5 5. exd5 Nxd5 6. Bd2 Nxc3 7. Bxc3 Bxc3+ 8. bxc3 0-0 9. Be2 Nc6 10. 0-0 Be6 11. d4 e4 12. Nd2 f5 13. c4 Nxd4 14. Rb1 b6 15. Nb3 Nxe2+ 16. Qxe2 c5 17. Rfd1 Qc7 18. f3 Qe5 19. Re1 Rfe8 20. fxe4 Bf7 21. Nd2 Rad8 22. Rb3 Qd4+ 23. Kh1 Qxd2 24. Qxd2 Rxd2 25. Rc3 Rxe4 0-1

[Event "NED-ch U13"]
[Site "Rijswijk"]
[Date "2015.05.15"]
[Round "5"]
[White "Algra, Sake"]
[Black "Koster, David"]
[Result "0-1"]
[ECO "C02"]
[WhiteElo "1514"]
[PlyCount "54"]
[EventDate "2015.05.14"]
[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 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Qb6 6. Bd3 Nh6 7. 0-0 cxd4 8. cxd4 Bd7 9. Be2 Nf5 10. Nc3 Nfxd4 11. Nxd4 Qxd4 12. Qxd4 Nxd4 13. Rd1 Nxe2+ 14. Nxe2 Bc5 15. a3 0-0 16. b4 Bb6 17. Rd3 Rfc8 18. Rg3 Rc2 19. Kf1 Bb5 20. Be3 Bxe2+ 21. Kg1 Bxe3 22. Rxe3 d4 23. Re4 d3 24. Rd4 h6 25. Re1 d2 26. Rxe2 d1Q+ 27. Rxd1 Rxe2 0-1

[Event "NED-ch U13"]
[Site "Rijswijk"]
[Date "2015.05.15"]
[Round "4"]
[White "Grutter, Tim"]
[Black "Koster, David"]
[Result "1/2-1/2"]
[ECO "C01"]
[PlyCount "50"]
[EventDate "2015.05.14"]
[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 e6 2. d4 d5 3. exd5 exd5 4. c4 c6 5. Nc3 Nf6 6. Bg5 Be7 7. Nf3 Bg4 8. c5 Nbd7 9. Be2 0-0 10. 0-0 h6 11. Bh4 Re8 12. h3 Bxf3 13. Bxf3 Nh7 14. Bg3 Bf6 15. Qa4 Ng5 16. Bg4 Be7 17. Nxd5 cxd5 18. Bxd7 Rf8 19. c6 bxc6 20. Bxc6 Rc8 21. f3 Bf6 22. Rad1 Ne6 23. Be5 Bxe5 24. dxe5 Qb6+ 25. Kh1 Rxc6 1/2-1/2

[Event "NED-ch U13"]
[Site "Rijswijk"]
[Date "2015.05.15"]
[Round "6"]
[White "Koster, David"]
[Black "Rutjens, Mika"]
[Result "1/2-1/2"]
[ECO "C49"]
[PlyCount "32"]
[EventDate "2015.05.14"]
[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 Nf6 3. Nc3 Nc6 4. Bb5 Bb4 5. Bxc6 dxc6 6. Nxe5 Qe7 7. Nc4 Bxc3 8. bxc3 Qxe4+ 9. Ne3 0-0 10. 0-0 Re8 11. Re1 Nd5 12. Bb2 Be6 13. Rb1 Rad8 14. d3 Qg6 15. c4 Nb6 16. Qf3 h6 1/2-1/2

[Event "NED-ch U13"]
[Site "Rijswijk"]
[Date "2015.05.14"]
[Round "1"]
[White "Koster, David"]
[Black "Janse, Sebastiaan"]
[Result "0-1"]
[ECO "C45"]
[BlackElo "1686"]
[PlyCount "68"]
[EventDate "2015.05.14"]
[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. d4 exd4 4. Nxd4 Qh4 5. Nc3 Bb4 6. Qd3 Nf6 7. Nxc6 dxc6 8. e5 Nd7 9. g3 Qh5 10. f4 Nc5 11. Qc4 Na6 12. Be2 Bg4 13. Bxg4 Qxg4 14. 0-0 Bc5+ 15. Kh1 h5 16. Ne4 Bb6 17. Ng5 0-0-0 18. Nxf7 Rd1 19. Kg2 h4 20. Ng5 hxg3 21. hxg3 Rxf1 22. Qxf1 Qh5 23. Bd2 Qh2+ 24. Kf3 Qxd2 25. Rd1 Qb4 26. Nf7 Rf8 27. Qh3+ Kb8 28. Qd7 Ka8 29. e6 Nb8 30. Qd3 Qe7 31. f5 g6 32. g4 gxf5 33. gxf5 Qh4 34. Rg1 Bxg1 0-1

[Event "NED-ch U13"]
[Site "Rijswijk"]
[Date "2015.05.14"]
[Round "3"]
[White "Koster, David"]
[Black "Sealy, Dylan"]
[Result "1-0"]
[ECO "C45"]
[PlyCount "65"]
[EventDate "2015.05.14"]
[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. d4 exd4 4. Nxd4 Bc5 5. Be3 Qf6 6. Nb5 Bxe3 7. fxe3 Qe5 8. N1c3 a6 9. Nd4 Nf6 10. Nxc6 dxc6 11. Qd4 Qxd4 12. exd4 Bg4 13. Bd3 0-0-0 14. e5 Nh5 15. h3 Be6 16. Ne2 g6 17. 0-0-0 Bxa2 18. g4 Ng7 19. c3 Bb3 20. Bc2 Bd5 21. Rhf1 Rhf8 22. b3 Rfe8 23. Nf4 Rf8 24. c4 Be6 25. d5 cxd5 26. cxd5 Bd7 27. Rfe1 g5 28. e6 fxe6 29. dxe6 Rxf4 30. exd7+ Rxd7 31. Bf5 Nxf5 32. Re8+ Rd8 33. Rexd8# 1-0

[Event "NED-ch U13"]
[Site "Rijswijk"]
[Date "2015.05.14"]
[Round "2"]
[White "Van Wijngaarden, Frank"]
[Black "Koster, David"]
[Result "1-0"]
[ECO "C02"]
[PlyCount "69"]
[EventDate "2015.05.14"]
[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 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Qb6 6. Be2 Nh6 7. 0-0 Nf5 8. h3 cxd4 9. cxd4 Nfxd4 10. Nxd4 Qxd4 11. Qxd4 Nxd4 12. Bd3 Bc5 13. Be3 0-0 14. Nc3 b6 15. Na4 Bd7 16. Nxc5 bxc5 17. b4 c4 18. Bxc4 dxc4 19. Bxd4 Rfd8 20. Rfc1 Bc6 21. Rxc4 Bb5 22. Rc5 Rxd4 23. Rxb5 f6 24. a3 fxe5 25. Rxe5 Kf7 26. Rc1 Kf6 27. Ra5 Rd5 28. Ra6 h5 29. Rc7 Rd1+ 30. Kh2 Rd2 31. f3 Rdd8 32. Raxa7 Rxa7 33. Rxa7 g5 34. b5 Ke5 35. a4 1-0

[Event "NED-ch U13"]
[Site "Rijswijk"]
[Date "2014.05.31"]
[Round "7"]
[White "Koster, David"]
[Black "Albertus, Bram"]
[Result "1/2-1/2"]
[ECO "D32"]
[PlyCount "79"]
[EventDate "2014.05.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. Nf3 d5 2. d4 e6 3. c4 c5 4. cxd5 exd5 5. Nc3 Nf6 6. Bg5 Be6 7. e3 Nbd7 8. Bb5 Be7 9. Ne5 0-0 10. Bxd7 Bxd7 11. Bxf6 Bxf6 12. Nxd5 Bxe5 13. dxe5 Bc6 14. e4 Re8 15. Nc3 Rxe5 16. f3 Qe8 17. 0-0 Rd8 18. Qc2 h6 19. Rad1 Rd4 20. Qf2 Qd7 21. Rxd4 cxd4 22. Rd1 d3 23. Qe3 Bb5 24. Qxa7 Re8 25. Qe3 Rd8 26. Nd5 Qe6 27. Qc5 Ba6 28. Qe7 Qxe7 29. Nxe7+ Kf8 30. Nd5 Rc8 31. Nc3 Ke7 32. Kf2 Ke6 33. Ke3 Rc4 34. Rxd3 Rc6 35. Ne2 Ke5 36. Rd5+ Kf6 37. Rf5+ Kg6 38. Nf4+ Kh7 39. Nd5 Rc2 40. Rxf7 1/2-1/2

[Event "NED-ch U13"]
[Site "Rijswijk"]
[Date "2014.05.31"]
[Round "9"]
[White "Koster, David"]
[Black "Algra, Sake"]
[Result "1/2-1/2"]
[ECO "A43"]
[PlyCount "117"]
[EventDate "2014.05.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. Nf3 c5 2. d4 cxd4 3. Nxd4 g6 4. Nc3 Bg7 5. Be3 Nf6 6. h3 Nc6 7. Nxc6 bxc6 8. Bd4 Bb7 9. e3 d6 10. Be2 e5 11. Bxe5 dxe5 12. 0-0 0-0 13. Bf3 Re8 14. Na4 e4 15. Be2 Qa5 16. c3 Rad8 17. Qc2 Rd6 18. b4 Qc7 19. Nc5 Red8 20. Rad1 Rxd1 21. Rxd1 Rxd1+ 22. Qxd1 Nd5 23. Nxe4 Nxc3 24. Nxc3 Bxc3 25. Qb3 Qe5 26. Bc4 Qf6 27. b5 Be1 28. f4 Bg3 29. bxc6 Qa1+ 30. Bf1 Ba6 31. Qb8+ Kg7 32. Qe5+ Qxe5 33. fxe5 Bxf1 34. Kxf1 Bxe5 35. Ke2 Kf8 36. Kd3 Ke7 37. Kc4 Kd6 38. Kb5 Kc7 39. a4 Bc3 40. Kc5 Bd2 41. e4 Be3+ 42. Kd5 a5 43. g3 Bf2 44. g4 h6 45. e5 Bg3 46. e6 fxe6+ 47. Kxe6 Kxc6 48. Kf6 h5 49. Kxg6 hxg4 50. hxg4 Bf4 51. Kf5 Bc1 52. g5 Bxg5 53. Kxg5 Kc5 54. Kf4 Kd4 55. Kf3 Kc4 56. Ke2 Kb3 57. Kd2 Kxa4 58. Kc2 Kb4 59. Kb2 1/2-1/2

[Event "NED-ch U13"]
[Site "Rijswijk"]
[Date "2014.05.31"]
[Round "8"]
[White "Kudlicka, Daniel"]
[Black "Koster, David"]
[Result "1/2-1/2"]
[ECO "B34"]
[PlyCount "53"]
[EventDate "2014.05.29"]
[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 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nxc6 bxc6 6. Qd4 Nf6 7. e5 Nh5 8. g4 Ng7 9. Bg2 Ne6 10. Qe4 Ba6 11. Nc3 Bg7 12. b3 0-0 13. Bb2 Qc7 14. 0-0-0 Rfd8 15. f4 Rab8 16. h4 Bb7 17. Rh2 d5 18. exd6 Rxd6 19. Rxd6 Qxd6 20. h5 Qxf4+ 21. Qxf4 Nxf4 22. hxg6 fxg6 23. Bf3 Be5 24. Rd2 c5 25. Bxb7 Rxb7 26. Ne4 Bxb2+ 27. Kxb2 1/2-1/2

[Event "NED-ch U13"]
[Site "Rijswijk"]
[Date "2014.05.30"]
[Round "4"]
[White "Honkoop, Gilian"]
[Black "Koster, David"]
[Result "0-1"]
[ECO "B38"]
[PlyCount "134"]
[EventDate "2014.05.29"]
[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 Nc6 3. d4 cxd4 4. Nxd4 g6 5. c4 Bg7 6. Be3 Nf6 7. Nc3 0-0 8. Be2 d6 9. f3 Bd7 10. Qd2 Ne5 11. Bh6 Rc8 12. Bxg7 Kxg7 13. b3 Nc6 14. g4 e5 15. Ndb5 Ne8 16. Nxd6 Nxd6 17. Qxd6 Qh4+ 18. Kf1 Qh3+ 19. Kf2 Qh4+ 20. Kg2 Rcd8 21. Qc5 Be6 22. Qf2 Qg5 23. Nd5 Bxd5 24. cxd5 Nd4 25. Rhd1 Qe7 26. Rxd4 exd4 27. Qxd4+ Qf6 28. Qxf6+ Kxf6 29. Bc4 Ke5 30. Kg3 f5 31. gxf5 gxf5 32. Re1 f4+ 33. Kf2 Rf6 34. Rg1 Rg6 35. Rc1 Rc8 36. Rd1 Rd6 37. Rd2 a6 38. a4 Rc5 39. Bf1 Rh6 40. Kg2 Rc3 41. Rb2 Rb6 42. Bc4 Rxc4 43. Rd2 Rd4 44. Rb2 Rd3 45. b4 a5 46. b5 Rd4 47. Ra2 Rd6 48. Kh3 Rd7 49. Kg4 Rc7 50. Kg5 Rcc4 51. Kh6 Rxa4 52. Rg2 Rac4 53. Kxh7 Rc7+ 54. Kh6 a4 55. Rg5+ Kd6 56. Rg6+ Kc5 57. d6 Rxd6 58. Rxd6 Kxd6 59. b6 Rc8 60. h4 a3 61. e5+ Kxe5 62. h5 a2 63. Kh7 a1Q 64. h6 Kd4 65. Kg6 Qg1+ 66. Kh5 Rh8 67. h7 Rxh7# 0-1

[Event "NED-ch U13"]
[Site "Rijswijk"]
[Date "2014.05.30"]
[Round "5"]
[White "Koster, David"]
[Black "Van Roon, Sjoerd"]
[Result "0-1"]
[ECO "D11"]
[PlyCount "78"]
[EventDate "2014.05.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. Nf3 d5 2. d4 c6 3. c4 Nf6 4. c5 Bf5 5. Bf4 Nbd7 6. Nc3 e6 7. e3 Be7 8. Ne5 Nxe5 9. Bxe5 0-0 10. Bd3 Bxd3 11. Qxd3 Nd7 12. 0-0-0 Nxe5 13. dxe5 Bxc5 14. h4 b5 15. h5 h6 16. Kb1 Qg5 17. f4 Qf5 18. Qxf5 exf5 19. Rde1 f6 20. exf6 Rxf6 21. a3 Re6 22. Rh3 d4 23. Nd1 dxe3 24. Rhxe3 Bxe3 25. Rxe3 Rxe3 26. Nxe3 Rf8 27. Nc2 Rf6 28. Nd4 Kf7 29. Kc2 a6 30. Kb3 c5 31. Nf3 Ke6 32. Ne5 Kd5 33. Kc3 c4 34. b3 cxb3 35. Kxb3 a5 36. Kc3 Ke4 37. Ng6 Rxg6 38. hxg6 Kxf4 39. Kd4 Kg3 0-1

[Event "NED-ch U13"]
[Site "Rijswijk"]
[Date "2014.05.30"]
[Round "6"]
[White "Van Randtwijk, Mick"]
[Black "Koster, David"]
[Result "1-0"]
[ECO "B78"]
[WhiteElo "1665"]
[PlyCount "45"]
[EventDate "2014.05.29"]
[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 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. Bc4 0-0 8. Bb3 d6 9. f3 Ne5 10. Qd2 Bd7 11. 0-0-0 a5 12. a3 a4 13. Ba2 Qc7 14. g4 Rfb8 15. Kb1 e6 16. h4 b5 17. h5 b4 18. axb4 Rxb4 19. hxg6 fxg6 20. Nxe6 Bxe6 21. Bxe6+ Kh8 22. Nd5 Nxd5 23. Rxh7+ 1-0

[Event "NED-ch U13"]
[Site "Rijswijk"]
[Date "2014.05.29"]
[Round "1"]
[White "Koster, David"]
[Black "Kroon, Joppe"]
[Result "0-1"]
[ECO "E61"]
[PlyCount "86"]
[EventDate "2014.05.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. Nf3 Nc6 2. d4 g6 3. c4 Nf6 4. Nc3 Bg7 5. Bf4 d6 6. e3 0-0 7. Qd2 Nd7 8. Bd3 e5 9. dxe5 dxe5 10. Bg3 Nc5 11. 0-0-0 Nb4 12. Bb1 Qxd2+ 13. Rxd2 e4 14. Ng5 f5 15. Bxc7 Nbd3+ 16. Bxd3 Nxd3+ 17. Kc2 Bd7 18. Bd6 Rf6 19. Ba3 Be6 20. Be7 Bxc4 21. Bxf6 Bxf6 22. b3 Nb4+ 23. Kb2 Bd3 24. a3 Nd5 25. Rc1 Nxc3 26. Rxc3 Rc8 27. Ka2 Rxc3 28. Ne6 Rc1 29. Nd4 Bxd4 30. exd4 Rc2+ 31. Rxc2 Bxc2 32. Kb2 Bd3 33. Kc3 Kf7 34. Kb4 b6 35. a4 Ke6 36. a5 Kd5 37. axb6 axb6 38. Kc3 b5 39. g3 Bf1 40. h4 h6 41. b4 Bc4 42. Kd2 Kxd4 43. Kc2 Bf1 0-1

[Event "NED-ch U13"]
[Site "Rijswijk"]
[Date "2014.05.29"]
[Round "3"]
[White "Koster, David"]
[Black "Tran, Tommy"]
[Result "1-0"]
[ECO "A43"]
[PlyCount "81"]
[EventDate "2014.05.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. Nf3 c5 2. d4 cxd4 3. Nxd4 g6 4. Nc3 Bg7 5. Be3 Nf6 6. g3 0-0 7. Bg2 Ng4 8. 0-0 Nxe3 9. fxe3 Nc6 10. Qd2 Nxd4 11. exd4 Qb6 12. e3 d6 13. Nd5 Qd8 14. Qc3 Rb8 15. Rad1 Bg4 16. Bf3 Bxf3 17. Rxf3 a6 18. Qd2 e6 19. Nc3 d5 20. Rdf1 b5 21. Qf2 Rb7 22. Ne2 Qc7 23. Nf4 Qe7 24. Nd3 Ra7 25. Nc5 Rc8 26. Qe2 Qd6 27. Qf2 Rcc7 28. Nb3 a5 29. Qd2 a4 30. Nc5 Qc6 31. Rc1 Bf8 32. b4 axb3 33. cxb3 Qb6 34. Rff1 Bxc5 35. dxc5 Rxc5 36. Qd4 Rac7 37. b4 R5c6 38. Qxb6 Rxb6 39. Rxc7 f5 40. Rfc1 h5 41. R1c6 1-0

[Event "NED-ch U13"]
[Site "Rijswijk"]
[Date "2014.05.29"]
[Round "2"]
[White "Van Vliet, Lodewijk"]
[Black "Koster, David"]
[Result "0-1"]
[ECO "B34"]
[PlyCount "44"]
[EventDate "2014.05.29"]
[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 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Be3 Bg7 6. Nc3 Nf6 7. Qd2 0-0 8. Nxc6 dxc6 9. Qxd8 Rxd8 10. Bd3 Be6 11. e5 Ng4 12. f4 Nxe3 13. Kf2 Nd5 14. Nxd5 Bxd5 15. Rhd1 Be6 16. c4 Rd4 17. Ke3 Rad8 18. b3 Bf5 19. Be2 Rxd1 20. Bxd1 f6 21. exf6 Bxf6 22. Bf3 Bxa1 0-1

