[Event "NED-ch U21"]
[Site "Rotterdam"]
[Date "2014.05.03"]
[Round "8"]
[White "Koning, Erwin"]
[Black "Dubbeldam, Mathijs"]
[Result "0-1"]
[ECO "A02"]
[WhiteElo "1609"]
[BlackElo "1364"]
[PlyCount "72"]
[EventDate "2014.04.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. f4 e6 2. Nf3 b6 3. e3 Bb7 4. b3 Nc6 5. Bb2 f6 6. c4 Qe7 7. Nc3 0-0-0 8. Be2 Nh6 9. 0-0 Rg8 10. Bd3 f5 11. Ng5 Ng4 12. h3 Nf6 13. Ne2 h6 14. Nf3 g5 15. fxg5 hxg5 16. Ned4 g4 17. Nxc6 Bxc6 18. hxg4 Nxg4 19. Rf2 Nxf2 20. Kxf2 Bg7 21. Bxg7 Qxg7 22. Qf1 Qg3+ 23. Ke2 Qxg2+ 24. Qxg2 Rxg2+ 25. Kd1 Bxf3+ 26. Kc2 Rh8 27. Rf1 Bg4 28. e4 Rhh2 29. exf5 Rxd2+ 30. Kc3 Bxf5 31. Bxf5 exf5 32. Rxf5 Rxa2 33. Rf8+ Kb7 34. Rf7 d6 35. Rf3 c5 36. Rg3 Rhd2 0-1

[Event "NED-ch U21"]
[Site "Rotterdam"]
[Date "2014.05.02"]
[Round "7"]
[White "Kalle, Erwin"]
[Black "Koning, Erwin"]
[Result "1-0"]
[ECO "B00"]
[WhiteElo "1698"]
[BlackElo "1609"]
[PlyCount "53"]
[EventDate "2014.04.26"]
[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 b6 2. d4 Bb7 3. Bd3 e6 4. Nf3 c5 5. c3 Be7 6. 0-0 Nf6 7. Qe2 0-0 8. a3 d5 9. e5 Nfd7 10. b4 c4 11. Bc2 Qc8 12. Ng5 Bxg5 13. Bxg5 Qe8 14. Nd2 f5 15. exf6 Nxf6 16. Rae1 Bc8 17. f4 Qf7 18. Nf3 Nc6 19. Ne5 Qc7 20. Rf3 Nxe5 21. fxe5 Nd7 22. Rh3 g6 23. Rxh7 Rf7 24. Rxf7 Kxf7 25. Rf1+ Kg7 26. Qf3 Bb7 27. Qf7+ 1-0

[Event "NED-ch U21"]
[Site "Rotterdam"]
[Date "2014.05.01"]
[Round "6"]
[White "Koning, Erwin"]
[Black "Wiegers, Kasper"]
[Result "0-1"]
[ECO "A01"]
[WhiteElo "1609"]
[BlackElo "1889"]
[PlyCount "70"]
[EventDate "2014.04.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. b3 c5 2. Bb2 Nc6 3. e3 a6 4. c4 Nf6 5. Nf3 d5 6. d4 e6 7. Be2 cxd4 8. Nxd4 Bb4+ 9. Kf1 0-0 10. Nxc6 bxc6 11. Ba3 Bxa3 12. Nxa3 e5 13. Qd2 Ne4 14. Qb2 Qf6 15. Bf3 Bf5 16. Bxe4 Bxe4 17. cxd5 cxd5 18. f3 Bxf3 19. gxf3 Qxf3+ 20. Kg1 Qxe3+ 21. Qf2 Qc3 22. Kg2 Rad8 23. Rad1 Rd6 24. Rhe1 e4 25. Kh1 f5 26. Re3 Qe5 27. Rg3 f4 28. Rg4 Rc6 29. Qd2 e3 30. Qxd5+ Qxd5+ 31. Rxd5 e2 32. Re5 f3 33. Rg2 Rc1+ 34. Rg1 Rxg1+ 35. Kxg1 f2+ 0-1

[Event "NED-ch U21"]
[Site "Rotterdam"]
[Date "2014.04.30"]
[Round "5"]
[White "Koning, Erwin"]
[Black "Mullink, Jochem"]
[Result "0-1"]
[ECO "A01"]
[WhiteElo "1609"]
[PlyCount "58"]
[EventDate "2014.04.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. b3 e5 2. Bb2 Nc6 3. e3 d6 4. c4 g6 5. Nf3 Bg7 6. Be2 Nf6 7. Nc3 0-0 8. 0-0 Re8 9. d4 exd4 10. exd4 d5 11. Nxd5 Nxd5 12. cxd5 Qxd5 13. Bc4 Qa5 14. h3 Be6 15. Bxe6 Rxe6 16. Re1 Rd6 17. Qd3 Rad8 18. Re4 f5 19. Rf4 Ne7 20. Qc4+ Nd5 21. Ne5 b5 22. Qc1 Nxf4 23. Qxf4 c5 24. dxc5 Rd1+ 25. Rxd1 Rxd1+ 26. Kh2 Qe1 27. Nf3 Qe7 28. Qb8+ Rd8 29. Qxb5 Bxb2 0-1

[Event "NED-ch U21"]
[Site "Rotterdam"]
[Date "2014.04.29"]
[Round "4"]
[White "Van Hoorn, Frank"]
[Black "Koning, Erwin"]
[Result "1-0"]
[ECO "B00"]
[BlackElo "1609"]
[PlyCount "31"]
[EventDate "2014.04.26"]
[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 b6 2. d4 Bb7 3. Bd3 e6 4. Nf3 c5 5. c3 Nc6 6. d5 Nb8 7. c4 Be7 8. 0-0 Nf6 9. Nc3 Qc8 10. e5 Ng8 11. Nd2 Nh6 12. Qf3 exd5 13. cxd5 g6 14. Nc4 Ng8 15. Ne4 Kf8 16. Ned6 1-0

[Event "NED-ch U21"]
[Site "Rotterdam"]
[Date "2014.04.28"]
[Round "3"]
[White "Koning, Erwin"]
[Black "Frima, Erik"]
[Result "1/2-1/2"]
[ECO "A01"]
[WhiteElo "1609"]
[PlyCount "66"]
[EventDate "2014.04.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. b3 c5 2. Bb2 e6 3. e3 Nf6 4. c4 Nc6 5. Nc3 Be7 6. Nf3 0-0 7. Be2 d6 8. 0-0 Nd7 9. d4 Bf6 10. Rb1 Qe7 11. Nb5 a6 12. Nc3 Rd8 13. d5 Nce5 14. Ne4 exd5 15. Qxd5 Nb6 16. Nxf6+ Qxf6 17. Bxe5 Nxd5 18. Bxf6 Nxf6 19. Bd3 Be6 20. e4 Ng4 21. Bc2 f6 22. Rfd1 Rd7 23. h3 Ne5 24. Nxe5 dxe5 25. Rxd7 Bxd7 26. Rd1 Bc6 27. f3 Kf7 28. Kf2 Ke7 29. Ke3 Rd8 30. Rxd8 Kxd8 31. g3 Ke7 32. h4 Bd7 33. Bd3 Kf7 1/2-1/2

[Event "NED-ch U21"]
[Site "Rotterdam"]
[Date "2014.04.27"]
[Round "2"]
[White "Zwirs, Jasper"]
[Black "Koning, Erwin"]
[Result "1-0"]
[ECO "B00"]
[WhiteElo "1933"]
[BlackElo "1609"]
[PlyCount "47"]
[EventDate "2014.04.26"]
[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 b6 2. d4 Bb7 3. Bd3 e6 4. Nf3 Be7 5. 0-0 Nf6 6. Re1 0-0 7. c4 c5 8. d5 Ne8 9. Nc3 Ba6 10. Qe2 g6 11. Bh6 Ng7 12. Rad1 Bb7 13. Bb1 Qc8 14. e5 Rd8 15. Ng5 exd5 16. cxd5 Bxg5 17. Bxg5 Re8 18. Ne4 Na6 19. Nf6+ Kh8 20. Nxe8 Qxe8 21. Bf6 Nc7 22. e6 dxe6 23. Bxg7+ Kxg7 24. Qe5+ 1-0

[Event "NED-ch U21"]
[Site "Rotterdam"]
[Date "2014.04.26"]
[Round "1"]
[White "Koning, Erwin"]
[Black "Kevlishvili, Robby"]
[Result "0-1"]
[ECO "A03"]
[WhiteElo "1609"]
[BlackElo "2130"]
[PlyCount "90"]
[EventDate "2014.04.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. b3 c5 2. Bb2 Nc6 3. e3 Nf6 4. f4 a6 5. Nf3 d5 6. Nc3 d4 7. exd4 cxd4 8. Ne2 Bg4 9. Neg1 Nd5 10. g3 e6 11. Be2 Bc5 12. Ne5 Bf5 13. Nxc6 bxc6 14. a3 Nxf4 15. Bf3 Nd5 16. Ne2 e5 17. c4 dxc3 18. Nxc3 Ne7 19. b4 Bd4 20. Qc1 0-0 21. Ne2 Bxb2 22. Qxb2 Qd6 23. Rc1 Bd3 24. Nc3 Rad8 25. Ne4 Bxe4 26. Bxe4 f5 27. Bg2 e4 28. 0-0 Qxd2 29. Qb3+ Qd5 30. Qc2 a5 31. Rcd1 Qb5 32. Rxd8 Rxd8 33. Qa2+ Qd5 34. Qxd5+ Rxd5 35. bxa5 Rxa5 36. g4 g6 37. gxf5 gxf5 38. Ra1 Kf7 39. Bf1 Ke6 40. Kf2 Ke5 41. Be2 f4 42. Rc1 Nd5 43. Rxc6 Rxa3 44. Rc5 Ra2 45. Rb5 f3 0-1

[Event "Haarlem AKN op 08th"]
[Site "Haarlem"]
[Date "1999.07.04"]
[Round "5"]
[White "Koning, Erwin"]
[Black "Kruijf, Caspar"]
[Result "1/2-1/2"]
[ECO "A52"]
[PlyCount "89"]
[EventDate "1999.07.02"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. Nf3 Bc5 5. e3 Nc6 6. Be2 Ngxe5 7. 0-0 Nxf3+ 8. Bxf3 Ne5 9. Be2 Qh4 10. Nd2 d6 11. Nf3 Nxf3+ 12. Bxf3 Qxc4 13. Bd5 Qh4 14. Qf3 0-0 15. Bxb7 Bxb7 16. Qxb7 Bb6 17. Qf3 Rfe8 18. Bd2 Rad8 19. Bc3 Re6 20. Rad1 Rh6 21. h3 Qh5 22. Qxh5 Rxh5 23. Rd3 Rh6 24. Rfd1 Re6 25. a4 c6 26. a5 Bc7 27. f3 Rb8 28. e4 a6 29. b4 f6 30. Rc1 Rc8 31. Bd2 Bb8 32. Bf4 c5 33. bxc5 Rxc5 34. Rxc5 Ba7 35. Be3 Bxc5 36. Bxc5 dxc5 37. Rd8+ Kf7 38. Rc8 c4 39. Rxc4 Re5 40. Ra4 Rb5 41. Ra2 Ke6 42. Kf2 g6 43. Ke3 g5 44. g4 Ke5 45. Ra3 1/2-1/2

[Event "Haarlem AKN op 08th"]
[Site "Haarlem"]
[Date "1999.07.04"]
[Round "6"]
[White "Leenart, Frits"]
[Black "Koning, Erwin"]
[Result "1/2-1/2"]
[ECO "A00"]
[PlyCount "90"]
[EventDate "1999.07.02"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 d5 2. Nc3 d4 3. Nce2 c5 4. Ng3 b6 5. Nf3 Qc7 6. Bc4 e6 7. Qe2 Ne7 8. d3 Ng6 9. Nh5 e5 10. Ng5 f6 11. Nf7 Qe7 12. Nxh8 Nxh8 13. Bd5 Bb7 14. Bxb7 Qxb7 15. f4 Nd7 16. Qg4 Kf7 17. 0-0 Ng6 18. f5 Ne7 19. Qh4 Nc8 20. Rf3 Nd6 21. Rg3 Ne8 22. Qg4 Ke7 23. Qh4 Kd6 24. Rf3 Rc8 25. g4 Be7 26. g5 fxg5 27. Bxg5 Bxg5 28. Qxg5 Ndf6 29. Ng3 Qf7 30. b3 b5 31. a4 b4 32. h3 Nc7 33. Kf2 Rf8 34. Ke2 Nd7 35. Raf1 Ne8 36. Qh5 Nef6 37. Qg5 Ne8 38. R3f2 Qf6 39. h4 h6 40. Qg6 Ke7 41. Qg4 Qf7 42. f6+ Ndxf6 43. Qc8 Qe6 44. Qxc5+ Nd6 45. Nf5+ Kd7 1/2-1/2

[Event "Haarlem AKN op 08th"]
[Site "Haarlem"]
[Date "1999.07.03"]
[Round "4"]
[White "Koning, Erwin"]
[Black "Zegstroo, Martin"]
[Result "1/2-1/2"]
[ECO "D10"]
[PlyCount "67"]
[EventDate "1999.07.02"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nc3 dxc4 4. a4 e5 5. Nf3 exd4 6. Qxd4 Qxd4 7. Nxd4 Bc5 8. Nc2 Be6 9. e4 Nf6 10. Be3 Nbd7 11. f4 Ng4 12. Bxc5 Nxc5 13. f5 Bd7 14. Bxc4 Ne5 15. b3 0-0-0 16. Ne3 Rhe8 17. 0-0-0 Kc7 18. Rhe1 Bc8 19. Kc2 Rxd1 20. Kxd1 Nxc4 21. bxc4 Nxe4 22. Nxe4 Rxe4 23. Kd2 Rf4 24. g4 Rf2+ 25. Kd3 Rxh2 26. c5 h5 27. Nc4 Rh3+ 28. Kd4 Rh4 29. Re7+ Kd8 30. Rxf7 Rxg4+ 31. Kd3 g6 32. Rf8+ Kc7 33. Rf7+ Kd8 34. Rf8+ 1/2-1/2

[Event "Haarlem AKN op 08th"]
[Site "Haarlem"]
[Date "1999.07.03"]
[Round "3"]
[White "Schol, Yvonne"]
[Black "Koning, Erwin"]
[Result "0-1"]
[ECO "B01"]
[PlyCount "116"]
[EventDate "1999.07.02"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 d5 2. Bd3 dxe4 3. Bxe4 Nf6 4. Bf3 c6 5. d3 Bf5 6. Ne2 e5 7. Ng3 Bg6 8. 0-0 Be7 9. Re1 Nbd7 10. b3 Qc7 11. Nd2 Bb4 12. a3 Bc3 13. Rb1 0-0-0 14. Bb2 Bxb2 15. Rxb2 Rhe8 16. Nde4 Nd5 17. Qd2 f5 18. c4 Nf4 19. Nc3 Nf6 20. Be2 Rd4 21. Qd1 Red8 22. Na4 Nxe2+ 23. Qxe2 e4 24. Nc5 Qe7 25. dxe4 fxe4 26. Ngxe4 Nxe4 27. Qg4+ Kb8 28. Qf4+ Ka8 29. Nxe4 Bxe4 30. Rbe2 Rd3 31. Rxe4 Qxa3 32. g3 Qxb3 33. Re8 Qc3 34. Rxd8+ Rxd8 35. Qe4 a5 36. Re3 Qd4 37. Qxh7 Qxc4 38. Qxg7 Rd1+ 39. Kg2 Qf1+ 40. Kf3 Rd2 41. Qf8+ Ka7 42. Qc5+ Ka6 43. Ra3 Rd3+ 44. Rxd3 Qxd3+ 45. Kg2 Qd5+ 46. Qxd5 cxd5 47. h4 a4 48. h5 a3 49. h6 a2 50. h7 a1Q 51. g4 Qg7 52. Kg3 Kb5 53. f4 Qxh7 54. g5 Qf5 55. Kh4 d4 56. Kh5 d3 57. Kh6 d2 58. g6 d1Q 0-1

[Event "Haarlem AKN op 08th"]
[Site "Haarlem"]
[Date "1999.07.02"]
[Round "1"]
[White "Galje, Hans"]
[Black "Koning, Erwin"]
[Result "1-0"]
[ECO "E80"]
[WhiteElo "2122"]
[PlyCount "55"]
[EventDate "1999.07.02"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 Nbd7 6. Bg5 c6 7. Qd2 Qc7 8. Nge2 e5 9. d5 c5 10. Nb5 Qb8 11. Ng3 h5 12. h4 a6 13. Nc3 Ng8 14. Bd3 f6 15. Be3 Nh6 16. 0-0 Nf8 17. a3 Bd7 18. b4 b6 19. Rab1 Qd8 20. bxc5 bxc5 21. Rb7 Nf7 22. Rfb1 g5 23. hxg5 h4 24. Nf5 Bxf5 25. exf5 fxg5 26. Bc2 Nh7 27. Ba4+ Kf8 28. Rd7 1-0

