[Event "Haarlem AKN op 08th"]
[Site "Haarlem"]
[Date "1999.07.04"]
[Round "6"]
[White "De Koning, Martin"]
[Black "Vellekoop, Kees"]
[Result "1-0"]
[ECO "A99"]
[PlyCount "105"]
[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. Nf3 f5 2. c4 Nf6 3. g3 e6 4. Bg2 Be7 5. 0-0 0-0 6. b3 a5 7. Bb2 d6 8. d4 Qe8 9. Nc3 Qh5 10. Qc2 Bd8 11. Rae1 Nc6 12. a3 Ng4 13. h3 Rf6 14. Bc1 Nh6 15. d5 Ne7 16. dxe6 Bxe6 17. Ng5 Bc8 18. Bf3 Qe8 19. Nd5 Nf7 20. Nxf6+ gxf6 21. Nxf7 Qxf7 22. Bb2 Ng6 23. Bd5 Be6 24. Bxe6 Qxe6 25. Qd3 Kf7 26. Qd5 Qxd5 27. cxd5 c6 28. dxc6 bxc6 29. Rc1 c5 30. Rfd1 Bc7 31. e3 Ke6 32. Kg2 Rb8 33. Rc3 Ne7 34. Ba1 Nd5 35. Rcd3 Nb6 36. Rc1 Nd7 37. f4 h5 38. Kf3 Rg8 39. b4 Bb6 40. bxa5 Bxa5 41. Bc3 c4 42. Rxd6+ Kxd6 43. Bxa5 Kc5 44. Bb4+ Kb5 45. Rd1 Nb6 46. Rd6 Na4 47. Rxf6 c3 48. Rxf5+ Kc4 49. Bxc3 Nxc3 50. Rxh5 Ra8 51. Re5 Rxa3 52. g4 Nd5 53. g5 1-0

[Event "Haarlem AKN op 08th"]
[Site "Haarlem"]
[Date "1999.07.03"]
[Round "4"]
[White "De Koning, Martin"]
[Black "Zoetemeijer, Peter"]
[Result "1-0"]
[ECO "D02"]
[PlyCount "36"]
[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. Nf3 d5 2. g3 Nc6 3. d4 Bf5 4. Bg2 e6 5. 0-0 Nf6 6. c4 Nb4 7. Na3 c6 8. cxd5 cxd5 9. Ne5 Nd7 10. Qa4 Na6 11. g4 Bxa3 12. Qxa3 Bg6 13. Bf4 f6 14. Nxg6 hxg6 15. e4 Kf7 16. exd5 Nb6 17. dxe6+ Kxe6 18. Qb3+ Nd5 1-0

[Event "Haarlem AKN op 08th"]
[Site "Haarlem"]
[Date "1999.07.03"]
[Round "3"]
[White "Van Amersfoort, Steef"]
[Black "De Koning, Martin"]
[Result "1-0"]
[ECO "C01"]
[PlyCount "65"]
[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 e6 2. d4 d5 3. exd5 exd5 4. Nf3 Bd6 5. Bd3 Ne7 6. 0-0 0-0 7. h3 c5 8. dxc5 Bxc5 9. Nc3 Nbc6 10. Bf4 Nb4 11. Rc1 Nxd3 12. cxd3 Bf5 13. d4 Bd6 14. Be5 f6 15. Bxd6 Qxd6 16. Qb3 Rad8 17. Ne2 Rfe8 18. Ng3 Bg6 19. Nh4 Bf7 20. Qxb7 Rd7 21. Qb3 Qf4 22. Nf3 Rb8 23. Qc3 g5 24. b3 h5 25. Ne2 Qf5 26. Qc2 Qe6 27. Rfe1 Bg6 28. Qd2 Qd6 29. Nxg5 fxg5 30. Qxg5 Qe6 31. Qe5 Rb6 32. Nf4 Qf5 33. Nxh5 1-0

[Event "Haarlem AKN op 08th"]
[Site "Haarlem"]
[Date "1999.07.02"]
[Round "1"]
[White "De Koning, Martin"]
[Black "Dgebuadze, Alexandre"]
[Result "0-1"]
[ECO "A13"]
[BlackElo "2510"]
[PlyCount "40"]
[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. Nf3 Nf6 2. g3 d5 3. Bg2 c6 4. c4 e6 5. cxd5 exd5 6. 0-0 Bd6 7. d3 0-0 8. Qb3 Nbd7 9. Nc3 Re8 10. Re1 Nc5 11. Qc2 Bf5 12. b4 Ne6 13. e4 Bg4 14. Rb1 a5 15. bxa5 Bxf3 16. Bxf3 Nd4 17. Qd1 Rxa5 18. Bb2 Bb4 19. Rc1 Nxf3+ 20. Qxf3 d4 0-1

[Event "Groningen ABM op"]
[Site "Groningen"]
[Date "1999.??.??"]
[Round "?"]
[White "Serrer, Christoph"]
[Black "De Koning, Martin"]
[Result "1-0"]
[ECO "E18"]
[WhiteElo "2285"]
[PlyCount "56"]
[EventDate "1999.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. Nf3 e6 2. g3 b6 3. Bg2 Bb7 4. d4 Be7 5. c4 Nf6 6. Nc3 d5 7. Ne5 0-0 8. 0-0 Nbd7 9. Qa4 Nxe5 10. dxe5 Ne8 11. cxd5 exd5 12. Nxd5 Bxd5 13. Rd1 b5 14. Qc2 Bxg2 15. Rxd8 Rxd8 16. Kxg2 c5 17. Be3 Rd5 18. f4 Nc7 19. b4 c4 20. a4 a6 21. axb5 axb5 22. Ra7 Bd8 23. Qe4 Rd1 24. Qc6 Nd5 25. Bc5 c3 26. Bxf8 c2 27. Qe8 Nxf4+ 28. gxf4 Rg1+ 1-0

