[Event "Leiden LCT op-A 7th"]
[Site "Leiden"]
[Date "2013.07.21"]
[Round "9"]
[White "Van Halderen, Herman"]
[Black "Serdijn Koster, Adinda"]
[Result "1-0"]
[ECO "D20"]
[WhiteElo "2071"]
[BlackElo "2048"]
[PlyCount "73"]
[EventDate "2013.07.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 155 Extra"]
[Source "ChessBase"]
[SourceDate "2013.08.26"]
[SourceVersion "1"]
[SourceVersionDate "2013.08.26"]
[SourceQuality "1"]

1. d4 d5 2. c4 dxc4 3. e4 e5 4. Nf3 exd4 5. Bxc4 Nc6 6. 0-0 Bc5 7. Qb3 Qd7 8. Bd2 a6 9. Qc2 Qe7 10. b3 Bg4 11. Bd5 Bxf3 12. Bxc6+ bxc6 13. gxf3 Qd6 14. Kh1 Ne7 15. b4 Bb6 16. Rg1 0-0 17. Qd3 c5 18. bxc5 Bxc5 19. Bg5 Ng6 20. Nd2 h6 21. Nc4 Qe6 22. Bd2 Be7 23. Rg2 Qh3 24. Rg3 Qh5 25. Rag1 Rfd8 26. f4 Bf8 27. f5 Nh4 28. Rg4 Kh8 29. f4 Rab8 30. Be1 Be7 31. Bxh4 Bxh4 32. Qh3 g5 33. fxg6 fxg6 34. Rxh4 Qe2 35. Rxh6+ Kg7 36. Rgxg6+ Kf8 37. Qf5+ 1-0

[Event "Leiden LCT op-A 7th"]
[Site "Leiden"]
[Date "2013.07.20"]
[Round "8"]
[White "Serdijn Koster, Adinda"]
[Black "Halfhide, Sebastian"]
[Result "1/2-1/2"]
[ECO "C06"]
[WhiteElo "2048"]
[PlyCount "69"]
[EventDate "2013.07.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 155 Extra"]
[Source "ChessBase"]
[SourceDate "2013.08.26"]
[SourceVersion "1"]
[SourceVersionDate "2013.08.26"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. Bd3 c5 6. c3 Nc6 7. Ndf3 f6 8. exf6 Nxf6 9. Ne5 Bd6 10. Ngf3 0-0 11. 0-0 Ne7 12. Bg5 cxd4 13. cxd4 Nf5 14. Qc2 g6 15. Ng4 Be7 16. Nh6+ Kh8 17. Rac1 Ng8 18. Bxe7 Ngxe7 19. Nxf5 gxf5 20. Ne5 Ng6 21. Qc7 Kg8 22. g3 Nxe5 23. dxe5 Qe8 24. Rc2 Rf7 25. Qd6 Bd7 26. Rfc1 Bc6 27. b4 Rd8 28. Qc5 a6 29. Bxa6 Ba4 30. Be2 Bxc2 31. Rxc2 Qe7 32. Qb6 Rff8 33. Rc7 Rd7 34. Rc2 Rdd8 35. Rc7 1/2-1/2

[Event "Leiden LCT op-A 7th"]
[Site "Leiden"]
[Date "2013.07.19"]
[Round "7"]
[White "Kouwenhoven, Arjen"]
[Black "Serdijn Koster, Adinda"]
[Result "1/2-1/2"]
[ECO "C81"]
[WhiteElo "2004"]
[BlackElo "2048"]
[PlyCount "134"]
[EventDate "2013.07.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 155 Extra"]
[Source "ChessBase"]
[SourceDate "2013.08.26"]
[SourceVersion "1"]
[SourceVersionDate "2013.08.26"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Qe2 Qd7 10. Rd1 Nc5 11. c4 Nxb3 12. axb3 bxc4 13. bxc4 d4 14. Nc3 Be7 15. Be3 Bg4 16. Bf4 0-0 17. Nd5 Bc5 18. h3 Be6 19. Nc3 Rfd8 20. Ne1 Nb4 21. Ne4 Be7 22. Qh5 Bxc4 23. Nf3 Be2 24. Bg5 Qf5 25. Ng3 Qxg5 26. Qxg5 Bxg5 27. Nxe2 d3 28. Nc3 Be7 29. Rd2 c5 30. Ne4 c4 31. Ra4 Rab8 32. Rd1 h6 33. Kf1 Kf8 34. Rc1 Nc2 35. Rxc4 Rxb2 36. Ra4 Nb4 37. Nfd2 Rc2 38. Re1 Rb8 39. f3 f5 40. exf6 gxf6 41. g4 Rb5 42. Nb3 Ra2 43. Rxa2 Nxa2 44. Nd4 Rd5 45. Nf5 d2 46. Rd1 Bb4 47. Ne3 Rd3 48. Ke2 Nc1+ 49. Kf2 Kf7 50. Nc4 Nb3 51. Ke2 Nc1+ 52. Kf2 Nb3 53. Ke2 Rd7 54. Ncxd2 Nxd2 55. Nxd2 a5 56. Ne4 Rxd1 57. Kxd1 Ke6 58. Kc2 Ke5 59. Ng3 a4 60. Kb2 a3+ 61. Kb3 Be7 62. Nf5 Bf8 63. Ng3 Kf4 64. Nh5+ Kxf3 65. Nxf6 Kg3 66. Ng8 Kxh3 67. Nxh6 Bxh6 1/2-1/2

[Event "Leiden LCT op-A 7th"]
[Site "Leiden"]
[Date "2013.07.18"]
[Round "6"]
[White "Serdijn Koster, Adinda"]
[Black "Wantola, Ivo"]
[Result "0-1"]
[ECO "B06"]
[WhiteElo "2048"]
[BlackElo "2374"]
[PlyCount "100"]
[EventDate "2013.07.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 155 Extra"]
[Source "ChessBase"]
[SourceDate "2013.08.26"]
[SourceVersion "1"]
[SourceVersionDate "2013.08.26"]
[SourceQuality "1"]

1. e4 g6 2. d4 d6 3. f4 a6 4. Nf3 Bg7 5. c3 Nd7 6. Bd3 c5 7. Be3 Ngf6 8. h3 cxd4 9. cxd4 b5 10. 0-0 Bb7 11. Nbd2 0-0 12. Qe1 Nb6 13. g4 Nc4 14. g5 Nh5 15. Nxc4 bxc4 16. Bc2 Rb8 17. Nd2 Qc8 18. Rf2 Qxh3 19. Nxc4 d5 20. Rh2 Qg3+ 21. Qxg3 Nxg3 22. Nb6 Rfd8 23. e5 Bc6 24. Na4 Bxa4 25. Bxa4 Nf5 26. Re1 Rb4 27. Bb3 Nxe3 28. Rxe3 Rxd4 29. Rf3 Rc8 30. Kf2 e6 31. Ke3 Re4+ 32. Kd3 Bf8 33. Rc2 Rxc2 34. Bxc2 h6 35. Kd2 Rb4 36. gxh6 Bxh6 37. Kc3 Rc4+ 38. Kd3 Bxf4 39. b3 Re4 40. Kc3 Bxe5+ 41. Kd3 Rd4+ 42. Ke3 f5 43. Bd3 a5 44. Bb5 g5 45. Rh3 Re4+ 46. Kf2 g4 47. Rh6 Kg7 48. Rh1 f4 49. Bd7 Bd4+ 50. Kf1 f3 0-1

[Event "Leiden LCT op-A 7th"]
[Site "Leiden"]
[Date "2013.07.16"]
[Round "5"]
[White "Van Calmthout, Hans"]
[Black "Serdijn Koster, Adinda"]
[Result "0-1"]
[ECO "D02"]
[BlackElo "2048"]
[PlyCount "100"]
[EventDate "2013.07.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 155 Extra"]
[Source "ChessBase"]
[SourceDate "2013.08.26"]
[SourceVersion "1"]
[SourceVersionDate "2013.08.26"]
[SourceQuality "1"]

1. Nf3 Nc6 2. d4 e6 3. Bf4 d5 4. e3 f5 5. Be2 Nf6 6. h3 Bd6 7. Nbd2 Bxf4 8. exf4 0-0 9. 0-0 Ne4 10. c3 Ne7 11. Ne5 b6 12. g3 c5 13. Rc1 Bb7 14. Bf3 Rc8 15. Nb3 a5 16. Bg2 a4 17. Nd2 cxd4 18. cxd4 Rxc1 19. Qxc1 Qd6 20. Nxe4 dxe4 21. Qd2 Rd8 22. Rd1 Bd5 23. a3 Bb3 24. Rc1 h6 25. Qe2 Qxd4 26. Rc7 Qd6 27. Rxe7 Qxe7 28. Nc6 Qd6 29. Nxd8 Qxd8 30. Qe3 Qd6 31. h4 Qc5 32. Qd2 Kh7 33. h5 Qd5 34. Qc1 Qd1+ 35. Qxd1 Bxd1 36. Bf1 Bxh5 37. Bc4 Bd1 38. Bxe6 Kg6 39. Bd7 Kf6 40. Kf1 g5 41. Ke1 Bb3 42. fxg5+ Kxg5 43. Bc6 Kg4 44. Ke2 f4 45. Bd7+ Kg5 46. Ke1 e3 47. gxf4+ Kxf4 48. fxe3+ Kxe3 49. Be8 Kf3 50. Kd2 Kg4 0-1

[Event "Leiden LCT op-A 7th"]
[Site "Leiden"]
[Date "2013.07.15"]
[Round "4"]
[White "Serdijn Koster, Adinda"]
[Black "Orlova, Yelizaveta"]
[Result "1-0"]
[ECO "B27"]
[WhiteElo "2048"]
[BlackElo "1942"]
[PlyCount "49"]
[EventDate "2013.07.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 155 Extra"]
[Source "ChessBase"]
[SourceDate "2013.08.26"]
[SourceVersion "1"]
[SourceVersionDate "2013.08.26"]
[SourceQuality "1"]

1. e4 c5 2. c3 g6 3. d4 cxd4 4. cxd4 d5 5. e5 Bg7 6. Nf3 Nc6 7. Nc3 Nh6 8. Qb3 0-0 9. Be2 Nf5 10. Be3 Nxe3 11. fxe3 e6 12. 0-0 Bh6 13. Nb5 Qb6 14. g4 Na5 15. Qc3 Rd8 16. g5 Bf8 17. Qe1 h5 18. Qf2 Be7 19. b4 Bxb4 20. Rab1 Nc6 21. Nh4 Rf8 22. Rxb4 Nxb4 23. Nxg6 Bd7 24. Nxf8 Rxf8 25. Nd6 1-0

[Event "Leiden LCT op-A 7th"]
[Site "Leiden"]
[Date "2013.07.13"]
[Round "2"]
[White "Serdijn Koster, Adinda"]
[Black "Van der Hoeven, Gerben"]
[Result "0-1"]
[ECO "B22"]
[WhiteElo "2048"]
[BlackElo "1962"]
[PlyCount "52"]
[EventDate "2013.07.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 155 Extra"]
[Source "ChessBase"]
[SourceDate "2013.08.26"]
[SourceVersion "1"]
[SourceVersionDate "2013.08.26"]
[SourceQuality "1"]

1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. d4 cxd4 5. cxd4 Qc7 6. Nf3 e6 7. a3 d6 8. Bd3 Nc6 9. exd6 Bxd6 10. Bd2 Nf4 11. Bf1 Qb6 12. Nc3 0-0 13. Qc2 Bd7 14. Rd1 Rac8 15. Be3 Nd5 16. Bd3 f5 17. Nxd5 exd5 18. Qb1 f4 19. Bxh7+ Kh8 20. Bc1 Bg4 21. Ng5 Rce8+ 22. Be3 fxe3 23. f3 Qd8 24. h4 Qf6 25. Bg6 Nxd4 26. 0-0 Qf4 0-1

[Event "Leiden LCT op-A 7th"]
[Site "Leiden"]
[Date "2013.07.12"]
[Round "1"]
[White "Prohaszka, Peter"]
[Black "Serdijn Koster, Adinda"]
[Result "1-0"]
[ECO "E04"]
[WhiteElo "2554"]
[BlackElo "2048"]
[PlyCount "69"]
[EventDate "2013.07.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 155 Extra"]
[Source "ChessBase"]
[SourceDate "2013.08.26"]
[SourceVersion "1"]
[SourceVersionDate "2013.08.26"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. c4 dxc4 4. g3 e6 5. Bg2 c5 6. 0-0 Nc6 7. Ne5 Nxe5 8. dxe5 Qxd1 9. Rxd1 Nd7 10. f4 Be7 11. Na3 Nb6 12. Nb5 0-0 13. a4 a5 14. Be3 Rb8 15. Bd2 Ra8 16. Be1 f6 17. exf6 Bxf6 18. Bc3 Bxc3 19. bxc3 Rb8 20. Rd6 Nd5 21. e4 Ne7 22. Na3 e5 23. f5 Nc6 24. Nxc4 Rf6 25. Rxf6 gxf6 26. Nb6 Kf7 27. Rd1 Ke7 28. Bf1 Ke8 29. Bc4 Ne7 30. g4 h6 31. Rd6 Nc6 32. Rxf6 Kd8 33. Rxh6 Kc7 34. Nd5+ Kd7 35. g5 1-0

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2013.07.02"]
[Round "7"]
[White "Serdijn Koster, Adinda"]
[Black "Kubbenga, Michael"]
[Result "1/2-1/2"]
[ECO "C92"]
[WhiteElo "2048"]
[BlackElo "1955"]
[PlyCount "81"]
[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 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 0-0 8. h3 Bb7 9. d3 d6 10. c3 Na5 11. Bc2 c5 12. Nbd2 Re8 13. Nf1 Bf8 14. Ng3 g6 15. Nh2 d5 16. Ng4 Nxg4 17. Qxg4 Bc8 18. Qe2 d4 19. f4 Qh4 20. Qf3 Bd6 21. Bd2 exf4 22. Ne2 dxc3 23. Bxc3 b4 24. Bd2 Be6 25. Ba4 g5 26. Bxe8 Rxe8 27. Qf2 Qxf2+ 28. Kxf2 Nc6 29. h4 f6 30. a3 Ne5 31. Nc1 bxa3 32. Rxa3 c4 33. Rxa6 Bc5+ 34. Kf1 cxd3 35. b4 Bc4 36. Ra3 Be3 37. Rd1 Rd8 38. hxg5 fxg5 39. Ra5 Nf7 40. Ra3 Ne5 41. Ra5 1/2-1/2

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2013.06.25"]
[Round "6"]
[White "Van Lankveld, Koen"]
[Black "Serdijn Koster, Adinda"]
[Result "0-1"]
[ECO "A26"]
[BlackElo "2048"]
[PlyCount "123"]
[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 e5 2. g3 Nc6 3. Bg2 g6 4. Nc3 Bg7 5. e4 d6 6. Nge2 f5 7. d3 Nf6 8. 0-0 0-0 9. exf5 Bxf5 10. Bg5 Qd7 11. Qd2 Rab8 12. a3 a6 13. b4 b5 14. Bxf6 Bxf6 15. Nd5 Bg7 16. Rae1 Nd8 17. Nec3 c6 18. Ne3 Be6 19. Ne2 Bh6 20. Qc2 d5 21. c5 Bh3 22. Bxh3 Qxh3 23. f4 Ne6 24. Ng2 exf4 25. Ngxf4 Nxf4 26. Nxf4 Bxf4 27. gxf4 Qg4+ 28. Qg2 Rxf4 29. Qxg4 Rxg4+ 30. Kh1 Rd4 31. Re7 Rf8 32. Rxf8+ Kxf8 33. Ra7 Rxd3 34. Rxa6 d4 35. Rxc6 Rxa3 36. Rd6 d3 37. c6 Rc3 38. c7 Rxc7 39. Rxd3 Rc4 40. Rb3 Ke7 41. Kg2 Rf4 42. Kg3 g5 43. Kg2 Ke6 44. Rh3 Rxb4 45. Rxh7 Rf4 46. Rg7 Rf5 47. Kg3 b4 48. Kg4 Rb5 49. Rg6+ Kf7 50. Rd6 b3 51. Rd1 b2 52. Rb1 Kg6 53. Kg3 Kh5 54. Kh3 Rb3+ 55. Kg2 Kg4 56. Kf2 Kh3 57. Ke2 Kxh2 58. Kd2 g4 59. Kc2 Rb8 60. Kc3 g3 61. Rxb2+ Rxb2 62. Kxb2 0-1

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2013.06.11"]
[Round "4"]
[White "Serdijn Koster, Adinda"]
[Black "Weiland, Harro"]
[Result "1/2-1/2"]
[ECO "C07"]
[WhiteElo "2048"]
[BlackElo "1935"]
[PlyCount "67"]
[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 e6 2. d4 d5 3. Nd2 c5 4. exd5 Qxd5 5. Ngf3 cxd4 6. Bc4 Qd6 7. 0-0 Nf6 8. Re1 Nc6 9. Nb3 Be7 10. Nbxd4 Nxd4 11. Qxd4 Qxd4 12. Nxd4 0-0 13. Bf4 a6 14. a4 Rd8 15. c3 Nd5 16. Bg3 Bf8 17. a5 Bd7 18. Rad1 Rac8 19. Be2 Ba4 20. Ra1 Be8 21. Bg4 Bd7 22. f4 Bc5 23. Rad1 Bc6 24. f5 Nf6 25. Bh3 exf5 26. Bxf5 Bd7 27. Bc2 Bg4 28. Rd2 Rxd4 29. cxd4 Bb4 30. Ree2 Bxa5 31. h3 Bxe2 32. Rxe2 Re8 33. Rxe8+ Nxe8 34. Kf2 1/2-1/2

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2013.06.04"]
[Round "3"]
[White "Van de Peut, Aart A"]
[Black "Serdijn Koster, Adinda"]
[Result "1-0"]
[ECO "C27"]
[WhiteElo "1931"]
[BlackElo "2048"]
[PlyCount "89"]
[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 e5 2. Nc3 Nf6 3. Bc4 Bc5 4. d3 d6 5. Na4 Bb4+ 6. c3 Ba5 7. b4 Bb6 8. Nxb6 axb6 9. Nf3 0-0 10. 0-0 Bg4 11. h3 Bh5 12. Bg5 c6 13. d4 Nbd7 14. dxe5 Nxe5 15. Be2 Bg6 16. Nxe5 dxe5 17. f3 b5 18. Qxd8 Rfxd8 19. Rfd1 Rxd1+ 20. Rxd1 Kf8 21. Bxf6 gxf6 22. Rd2 f5 23. exf5 Bxf5 24. c4 bxc4 25. Bxc4 Ra4 26. Rb2 Ke7 27. Kf2 b5 28. Be2 Be6 29. Bd1 Rxa2 30. Rxa2 Bxa2 31. Bc2 h6 32. Ke3 Kd6 33. g4 c5 34. bxc5+ Kxc5 35. h4 b4 36. g5 b3 37. gxh6 bxc2 38. Kd2 Bb1 39. Kc1 f5 40. h7 e4 41. fxe4 fxe4 42. h8Q Kc4 43. Qd8 e3 44. h5 e2 45. Qd2 1-0

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2013.05.28"]
[Round "2"]
[White "Serdijn Koster, Adinda"]
[Black "Willemze, Thomas"]
[Result "0-1"]
[ECO "B01"]
[WhiteElo "2048"]
[BlackElo "2416"]
[PlyCount "62"]
[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 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. d4 Nf6 5. Nf3 Bf5 6. Bc4 e6 7. 0-0 c6 8. Bf4 Nbd7 9. Re1 Bb4 10. Nh4 Bg4 11. f3 Bh5 12. g4 g5 13. Be5 gxh4 14. Bxf6 Nxf6 15. Re5 Qb6 16. gxh5 0-0-0 17. Ne2 Bd6 18. Re3 Qc7 19. h3 Bf4 20. Ra3 Rhg8+ 21. Kh1 Nxh5 22. Rxa7 Kb8 23. Ra3 e5 24. Nxf4 Nxf4 25. Qe1 Rxd4 26. Bf1 f6 27. c3 Qg7 28. Qf2 Rd5 29. Re1 Qg3 30. Qa7+ Kc7 31. c4 Qxe1 0-1

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2013.05.21"]
[Round "1"]
[White "Molsbergen, Chris"]
[Black "Serdijn Koster, Adinda"]
[Result "0-1"]
[ECO "C80"]
[BlackElo "2048"]
[PlyCount "66"]
[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 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Nxe4 6. Re1 Nc5 7. Nxe5 Nxe5 8. Rxe5+ Be7 9. c4 Nxa4 10. Qxa4 0-0 11. d4 Bf6 12. Re4 d5 13. cxd5 Bf5 14. Re1 Qxd5 15. Be3 b5 16. Nc3 Qd7 17. Qb3 Rfd8 18. d5 Bd3 19. Rac1 Bc4 20. Qc2 Bxc3 21. Qxc3 Bxd5 22. Qxc7 Bxa2 23. Qxd7 Rxd7 24. Rc6 f6 25. h3 a5 26. Ra1 Bc4 27. Bb6 a4 28. Rc5 Re8 29. Rxc4 bxc4 30. Rxa4 Rc8 31. Ra3 Rb8 32. Ra6 Rd1+ 33. Kh2 Rd2 0-1

[Event "Leiden LCT op-A 6th"]
[Site "Leiden"]
[Date "2012.07.14"]
[Round "7"]
[White "Serdijn Koster, Adinda"]
[Black "Spaan, Nathanael"]
[Result "1-0"]
[ECO "B22"]
[WhiteElo "2040"]
[BlackElo "2206"]
[PlyCount "51"]
[EventDate "2012.07.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 149 Extra"]
[Source "ChessBase"]
[SourceDate "2012.08.24"]
[SourceVersion "1"]
[SourceVersionDate "2012.08.24"]
[SourceQuality "1"]

1. e4 c5 2. c3 d6 3. d4 Nf6 4. dxc5 Nc6 5. cxd6 Nxe4 6. Nf3 Nxd6 7. Bf4 e6 8. Bd3 Be7 9. Qc2 h6 10. Nbd2 Bd7 11. 0-0 Qa5 12. Nb3 Qa4 13. Bg3 Na5 14. Rfe1 Bc6 15. Ne5 Bd5 16. Nxa5 Qxa5 17. c4 Rc8 18. Qe2 Bc6 19. a3 b5 20. Nxc6 Rxc6 21. c5 Nc4 22. b4 Qa4 23. Bc2 Qa6 24. a4 Bf6 25. axb5 Qxb5 26. Ba4 1-0

[Event "Leiden LCT op-A 6th"]
[Site "Leiden"]
[Date "2012.07.12"]
[Round "6"]
[White "Ratsma, Midas"]
[Black "Serdijn Koster, Adinda"]
[Result "0-1"]
[ECO "D55"]
[WhiteElo "1944"]
[BlackElo "2040"]
[PlyCount "64"]
[EventDate "2012.07.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 149 Extra"]
[Source "ChessBase"]
[SourceDate "2012.08.24"]
[SourceVersion "1"]
[SourceVersionDate "2012.08.24"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. Nc3 Be7 5. Bg5 0-0 6. e3 Re8 7. Bd3 dxc4 8. Bxc4 a6 9. a4 Nbd7 10. 0-0 h6 11. Bh4 c5 12. Qe2 cxd4 13. exd4 Nb6 14. Bd3 Nbd5 15. Bg3 Nh5 16. Nxd5 exd5 17. Rae1 Nxg3 18. fxg3 Be6 19. Bb1 Bb4 20. Rd1 Bf5 21. Qf2 Bxb1 22. Rxb1 f6 23. Ne1 Qa5 24. b3 Bd2 25. b4 Bxb4 26. Nc2 Bf8 27. Rxb7 Qxa4 28. Rfb1 Qc4 29. Ne1 Re2 30. Qf4 Rae8 31. Nf3 Qa2 32. Nh4 Re1+ 0-1

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2011.06.28"]
[Round "7"]
[White "Serdijn Koster, Adinda"]
[Black "Van Briemen, Willem Jan"]
[Result "0-1"]
[ECO "C06"]
[WhiteElo "1992"]
[BlackElo "2006"]
[PlyCount "70"]
[EventDate "2011.05.17"]
[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 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. Bd3 c5 6. c3 Nc6 7. Ne2 cxd4 8. cxd4 f6 9. exf6 Nxf6 10. 0-0 Bd6 11. Nf3 Qb6 12. Nc3 Bd7 13. a3 0-0 14. Be3 Be8 15. Ng5 Ne7 16. h3 Bc7 17. Qc2 Bg6 18. Rfe1 Bxd3 19. Qxd3 Rae8 20. Bd2 Nf5 21. Nxe6 Rxe6 22. Qxf5 Rxe1+ 23. Rxe1 Qxb2 24. Qe6+ Kh8 25. Qe7 Rg8 26. Rd1 Ba5 27. Qc5 Bb6 28. Bc1 Qc2 29. Qb4 Ne4 30. Be3 Qxc3 31. Qe7 Qc7 32. Qe6 Qd6 33. Qf7 Qxa3 34. Qxd5 Nc3 35. Qf7 Nxd1 0-1

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2011.06.21"]
[Round "6"]
[White "De Leur, Ben"]
[Black "Serdijn Koster, Adinda"]
[Result "0-1"]
[ECO "A26"]
[WhiteElo "2060"]
[BlackElo "1992"]
[PlyCount "140"]
[EventDate "2011.05.17"]
[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 g6 3. Bg2 Bg7 4. Nc3 f5 5. d3 d6 6. e4 Nf6 7. Nge2 0-0 8. 0-0 Nc6 9. Nd5 Be6 10. Bg5 Qd7 11. b4 Rae8 12. b5 Nd8 13. a4 Nh5 14. Bd2 f4 15. f3 c6 16. Ndc3 g5 17. a5 a6 18. bxa6 bxa6 19. Na4 Qa7+ 20. Nb6 d5 21. cxd5 cxd5 22. Qa4 Nf6 23. Be1 d4 24. Bb4 Rf7 25. Bd6 Nd7 26. Rfc1 Nb7 27. Rc7 Rd8 28. Nc8 Qa8 29. Qc6 Nb8 30. Qb6 Rxc8 31. Bxe5 Bxe5 32. Qxe6 Rcxc7 33. Qe8+ Rf8 34. Qxe5 Rg7 35. Bh3 Nd8 36. Rb1 Nbc6 37. Qd5+ Kh8 38. Qd6 Nf7 39. Qf6 Nfe5 40. Qd6 Nxf3+ 41. Kg2 Nd2 42. Rb6 f3+ 43. Kf2 fxe2+ 44. Kxe2 Rg6 45. Be6 Re8 46. Rxc6 Rgxe6 47. Qxd4+ Kg8 48. Rc7 R6e7 49. Rxe7 Rxe7 50. Qc5 Rg7 51. Kxd2 Qb7 52. Qe5 Qb5 53. Qe6+ Rf7 54. Qc8+ Kg7 55. Qc3+ Kg6 56. Qa3 Qd7 57. Qc5 Qe7 58. Qc6+ Qf6 59. Qc5 Qf2+ 60. Qxf2 Rxf2+ 61. Ke3 Rxh2 62. d4 Ra2 63. d5 Rxa5 64. Kd4 Kf6 65. e5+ Ke7 66. g4 Ra4+ 67. Kc5 Rxg4 68. Kb6 Re4 69. Kc7 Rxe5 70. d6+ Ke6 0-1

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2011.06.07"]
[Round "4"]
[White "Van den Berg, Ad"]
[Black "Serdijn Koster, Adinda"]
[Result "0-1"]
[ECO "C42"]
[WhiteElo "2245"]
[BlackElo "1992"]
[PlyCount "102"]
[EventDate "2011.05.17"]
[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 e5 2. Nc3 Nf6 3. Bc4 Bb4 4. Nf3 d6 5. d3 0-0 6. 0-0 Bg4 7. h3 Bh5 8. Bg5 c6 9. g4 Bg6 10. Nh4 Nbd7 11. Ne2 Qc7 12. c3 Ba5 13. a4 d5 14. Ba2 Bb6 15. Bxf6 Nxf6 16. g5 Nh5 17. Nxg6 hxg6 18. exd5 Qd8 19. dxc6 Qxg5+ 20. Kh1 bxc6 21. a5 Bxa5 22. Qa4 Qf5 23. Qg4 Bb6 24. Rae1 Qxd3 25. f4 Qe4+ 26. Kh2 Nf6 27. Qg2 Qxg2+ 28. Kxg2 e4 29. f5 gxf5 30. Rxf5 Rad8 31. Ng3 Rd2+ 32. Re2 Rfd8 33. Kf1 Rxe2 34. Kxe2 Rd7 35. Bc4 Bc7 36. Nf1 Nd5 37. h4 g6 38. Rg5 Kg7 39. Ne3 Nf4+ 40. Ke1 Nd3+ 41. Bxd3 exd3 42. Nf5+ Kf6 43. Nd4 Re7+ 44. Kd1 Re4 45. Rc5 Bf4 46. Rxc6+ Kg7 47. h5 d2 48. Ne2 Bg5 49. hxg6 Ra4 50. Kc2 Ra1 51. Rd6 Rc1+ 0-1

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2011.06.01"]
[Round "3"]
[White "Serdijn Koster, Adinda"]
[Black "Wantola, Ivo"]
[Result "0-1"]
[ECO "B22"]
[WhiteElo "1992"]
[BlackElo "2335"]
[PlyCount "82"]
[EventDate "2011.05.17"]
[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 Nf6 3. e5 Nd5 4. d4 cxd4 5. cxd4 d6 6. Nf3 Nc6 7. Bc4 Nb6 8. Bb5 a6 9. Bxc6+ bxc6 10. 0-0 d5 11. Nc3 e6 12. Bg5 Qd7 13. Rc1 a5 14. Qb3 Nc4 15. Na4 Ba6 16. Rfd1 h6 17. Bh4 Qa7 18. Qc2 Bb5 19. Nc3 Ba6 20. Na4 Bb7 21. b3 Na3 22. Qb2 Bb4 23. Nc5 Nb5 24. Qa1 Ba3 25. Rc2 0-0 26. Ne1 Nc7 27. Be7 Rfe8 28. Bd6 Nb5 29. Nxb7 Qxb7 30. Bxa3 Nxa3 31. Rc5 a4 32. bxa4 Rxa4 33. g3 Nc4 34. Nd3 Rb8 35. Kg2 Qa6 36. Rb1 Rxb1 37. Qxb1 Rxa2 38. Qb8+ Kh7 39. Nb4 Ne3+ 40. Kh3 Qf1+ 41. Kh4 g5+ 0-1

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2011.05.24"]
[Round "2"]
[White "Serdijn Koster, Adinda"]
[Black "Van Ketel, Raoul"]
[Result "1-0"]
[ECO "C06"]
[WhiteElo "1992"]
[BlackElo "2290"]
[PlyCount "137"]
[EventDate "2011.05.17"]
[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 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. Bd3 c5 6. c3 Nc6 7. Ne2 Qb6 8. Nf3 cxd4 9. cxd4 f6 10. exf6 Nxf6 11. 0-0 Bd6 12. Nc3 0-0 13. Re1 Bd7 14. Bg5 Kh8 15. Bf1 a6 16. Qd2 Qc7 17. Bh4 Nh5 18. Bg3 Nxg3 19. hxg3 Rf6 20. Rad1 Raf8 21. Qd3 Rh6 22. Re3 Rf5 23. Be2 g5 24. Nh2 Ne7 25. Bg4 Rff6 26. Rde1 b5 27. a3 Qc8 28. Nf3 Rhg6 29. Ne5 Bxe5 30. Rxe5 Qc4 31. Qd2 Nc6 32. Rxg5 Rxg5 33. Qxg5 Qxd4 34. Bf3 Rg6 35. Qf4 Qxf4 36. gxf4 Rf6 37. g3 Kg7 38. Kg2 Na5 39. Bg4 Kf7 40. Bh5+ Kf8 41. b4 Nc4 42. Nb1 Ke7 43. Bf3 Kd6 44. Rd1 Be8 45. Nc3 Bg6 46. a4 Nb2 47. Ra1 Nxa4 48. Nxa4 bxa4 49. Rxa4 Bd3 50. Ra3 Bc4 51. Ra1 Kc6 52. Ra5 Rf7 53. Bg4 Kd6 54. Bd1 Rb7 55. Ra4 Re7 56. Kf3 e5 57. fxe5+ Kxe5 58. Ke3 d4+ 59. Kd2 Bb5 60. Ra1 Rf7 61. f4+ Ke4 62. Bh5 Ra7 63. Re1+ Kd5 64. g4 Kc4 65. Rb1 Kd5 66. Re1 d3 67. g5 Rc7 68. Bf3+ Kd4 69. Re4+ 1-0

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2011.05.17"]
[Round "1"]
[White "Vernooy, Daan"]
[Black "Serdijn Koster, Adinda"]
[Result "0-1"]
[ECO "D37"]
[WhiteElo "1613"]
[BlackElo "1992"]
[PlyCount "52"]
[EventDate "2011.05.17"]
[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 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 Be7 5. e3 0-0 6. Be2 dxc4 7. Bxc4 b6 8. 0-0 Bb7 9. Bd2 c5 10. dxc5 Bxc5 11. Ne5 Nbd7 12. Nxd7 Qxd7 13. Qe2 Rac8 14. Bb5 Qe7 15. a3 Rfd8 16. Rfd1 e5 17. e4 Bd4 18. Bd3 Nd7 19. Rac1 Nc5 20. Be1 Nxd3 21. Rxd3 Ba6 22. Nd5 Qg5 23. Rxc8 Rxc8 24. Bd2 Qd8 25. Rc3 Rxc3 26. Qxa6 Rc2 0-1

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2008.07.01"]
[Round "7"]
[White "Serdijn Koster, Adinda"]
[Black "Van de Peut, Aart A"]
[Result "1-0"]
[ECO "C07"]
[WhiteElo "1997"]
[BlackElo "1893"]
[PlyCount "81"]
[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 e6 2. d4 d5 3. Nd2 c5 4. exd5 Qxd5 5. Ngf3 cxd4 6. Bc4 Qd6 7. 0-0 Nf6 8. Nb3 Nc6 9. Nbxd4 Nxd4 10. Nxd4 a6 11. a4 Qc7 12. b3 Bd6 13. Nf3 0-0 14. Bb2 e5 15. h3 Bf5 16. Qe2 b5 17. axb5 axb5 18. Bxb5 Qxc2 19. Rxa8 Rxa8 20. Bxe5 Qxe2 21. Bxe2 Bxe5 22. Nxe5 Re8 23. f4 Nd7 24. Bb5 Re7 25. Rd1 Nf8 26. Bc4 g6 27. b4 Be6 28. Bxe6 Nxe6 29. g3 Rb7 30. Rb1 Nd4 31. Kf2 Rb5 32. Nd3 h5 33. Rc1 Ne6 34. Ke3 Kg7 35. Ra1 g5 36. Ra5 gxf4+ 37. gxf4 Rxa5 38. bxa5 Nc7 39. Kd4 Kf6 40. Kc5 Kf5 41. Kc6 1-0

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2008.06.24"]
[Round "6"]
[White "Spaans, Coenraad"]
[Black "Serdijn Koster, Adinda"]
[Result "0-1"]
[ECO "C56"]
[WhiteElo "1975"]
[BlackElo "1997"]
[PlyCount "106"]
[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 e5 2. Nf3 Nc6 3. d4 exd4 4. Bc4 Nf6 5. 0-0 Nxe4 6. Re1 d5 7. Bxd5 Qxd5 8. Nc3 Qa5 9. Nxe4 Be6 10. Bd2 Bb4 11. Nxd4 Nxd4 12. c3 0-0-0 13. cxb4 Qf5 14. Qa4 Kb8 15. Ng3 Qc2 16. Qxc2 Nxc2 17. Bc3 Nxa1 18. Rxa1 f6 19. Nh5 Rd7 20. Nxg7 Rxg7 21. Bxf6 Rhg8 22. Bxg7 Rxg7 23. Re1 Rg6 24. f4 c6 25. a3 Bd5 26. Re8+ Kc7 27. g3 Re6 28. Rh8 Be4 29. g4 Re7 30. Kf2 Kd6 31. Rd8+ Rd7 32. Ra8 b5 33. Ke3 Bd5 34. f5 Ke5 35. Re8+ Kf6 36. Kf4 Kf7 37. Rc8 Re7 38. Kg5 Bf3 39. Rh8 Re4 40. h3 Kg7 41. Rd8 h6+ 42. Kh5 Bg2 43. Rd7+ Kf6 44. Rd6+ Kf7 45. Rxc6 Bxh3 46. Rxh6 Rxg4 47. Ra6 Rg2 48. f6 Rxb2 49. a4 Rxb4 50. Rxa7+ Kxf6 51. axb5 Rxb5+ 52. Kh4 Rb3 53. Ra6+ Be6 0-1

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2008.06.17"]
[Round "5"]
[White "Serdijn Koster, Adinda"]
[Black "Sharshov, Wadim"]
[Result "1/2-1/2"]
[ECO "B15"]
[WhiteElo "1997"]
[BlackElo "1736"]
[PlyCount "65"]
[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 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nf6 5. Nxf6+ exf6 6. Bc4 Bd6 7. Nf3 0-0 8. 0-0 Bg4 9. h3 Bh5 10. Be3 Nd7 11. Be2 Nb6 12. g4 Bg6 13. c4 Bc7 14. Nh4 Re8 15. Nxg6 hxg6 16. Qd2 Qd6 17. f4 Qe6 18. Rf3 Bxf4 19. Kf2 Bxe3+ 20. Qxe3 Qd6 21. Qf4 Qxf4 22. Rxf4 g5 23. Rf3 Re4 24. Rd1 Rd8 25. Ra3 Rexd4 26. Rxd4 Rxd4 27. Rxa7 Nxc4 28. Bxc4 Rxc4 29. Rxb7 g6 30. a3 f5 31. b3 Rc2+ 32. Kf3 Rc3+ 33. Kg2 1/2-1/2

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2008.06.10"]
[Round "4"]
[White "Oei, Hway Ik"]
[Black "Serdijn Koster, Adinda"]
[Result "1-0"]
[ECO "D27"]
[WhiteElo "2083"]
[BlackElo "1997"]
[PlyCount "93"]
[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 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 e6 5. Bxc4 c5 6. 0-0 a6 7. Bb3 Be7 8. dxc5 Qxd1 9. Rxd1 Bxc5 10. Bd2 0-0 11. Bc3 Nc6 12. Nbd2 Rd8 13. Nc4 Nd5 14. Be1 b5 15. Na5 Nxa5 16. Bxa5 Re8 17. Bxd5 exd5 18. Rxd5 Be7 19. Nd4 Bf6 20. Rd1 h6 21. h3 Bb7 22. Rd7 Be4 23. f3 Bg6 24. e4 Rec8 25. a3 Kf8 26. Bc3 Ke8 27. Ne2 Rc6 28. Bxf6 Rxf6 29. Nc3 Rc6 30. Kf2 Rac8 31. Ke3 R6c7 32. Rxc7 Rxc7 33. Rd6 Ra7 34. e5 Bf5 35. g4 Be6 36. f4 Bc4 37. h4 a5 38. Rd4 Rb7 39. Ne4 Ke7 40. Nd6 Rc7 41. Nf5+ Ke8 42. Nxg7+ Kf8 43. Nf5 Kg8 44. Nxh6+ Kh7 45. g5 Bb3 46. f5 Rc2 47. Rd7 1-0

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2008.06.03"]
[Round "3"]
[White "Serdijn Koster, Adinda"]
[Black "De Mooij, Marco"]
[Result "1-0"]
[ECO "B22"]
[WhiteElo "1997"]
[BlackElo "1809"]
[PlyCount "55"]
[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 Nf6 3. e5 Nd5 4. d4 cxd4 5. cxd4 d6 6. Nf3 Nc6 7. Bc4 Nb6 8. Bb5 Bd7 9. Nc3 e6 10. 0-0 a6 11. Be2 Nb4 12. Bg5 Qb8 13. Ne4 Bc6 14. Nxd6+ Bxd6 15. exd6 Qxd6 16. Qd2 Be4 17. Bf4 Qe7 18. Ng5 Bg6 19. Bf3 N4d5 20. Bg3 Rc8 21. Ne4 0-0 22. Bd6 Qh4 23. Bxf8 Nc4 24. Qg5 Qxg5 25. Nxg5 Kxf8 26. Rac1 Bd3 27. Rfd1 Nf4 28. b3 1-0

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2008.05.27"]
[Round "2"]
[White "Van Ketel, Raoul"]
[Black "Serdijn Koster, Adinda"]
[Result "1-0"]
[ECO "D20"]
[WhiteElo "2302"]
[BlackElo "1997"]
[PlyCount "73"]
[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 d5 2. c4 dxc4 3. e4 e5 4. Nf3 exd4 5. Bxc4 Nc6 6. 0-0 Be6 7. Bb5 Bc5 8. Nbd2 Nge7 9. Ng5 Qd7 10. Nxe6 Qxe6 11. Nb3 Qd6 12. Bf4 Qxf4 13. Nxc5 0-0 14. Rc1 Rfb8 15. g3 Qh6 16. f4 a6 17. Bd3 Rd8 18. Rf2 Rab8 19. a3 a5 20. Rfc2 b6 21. Na6 Rb7 22. Qf3 b5 23. e5 Rb6 24. Nxc7 b4 25. Rc5 bxa3 26. bxa3 Rb2 27. h4 Nb8 28. e6 fxe6 29. Nxe6 Rd6 30. Ng5 Rc6 31. Qe4 Rxc5 32. Rxc5 Nbc6 33. Rf5 g6 34. Bc4+ Kg7 35. Rf7+ Kh8 36. Rxe7 Nxe7 37. Qxe7 1-0

[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 LCT op 1st"]
[Site "Leiden"]
[Date "2007.07.19"]
[Round "6"]
[White "Serdijn Koster, Adinda"]
[Black "Slingerland, Fred"]
[Result "0-1"]
[ECO "B22"]
[WhiteElo "2034"]
[BlackElo "2304"]
[PlyCount "84"]
[EventDate "2007.07.13"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 119 Extra"]
[Source "ChessBase"]
[SourceDate "2007.09.04"]
[SourceVersion "1"]
[SourceVersionDate "2007.09.04"]
[SourceQuality "1"]

1. e4 c5 2. c3 e5 3. Nf3 Nc6 4. d4 cxd4 5. cxd4 exd4 6. Nxd4 Nf6 7. Nxc6 dxc6 8. Qxd8+ Kxd8 9. Nc3 Bb4 10. Bg5 h6 11. Bxf6+ gxf6 12. Be2 Be6 13. 0-0 Ke7 14. a3 Ba5 15. b4 Bc7 16. b5 Rhd8 17. bxc6 bxc6 18. Rfd1 Rab8 19. Rxd8 Rxd8 20. Rd1 Rb8 21. Rb1 Rxb1+ 22. Nxb1 Ba5 23. Bd3 Kd6 24. Kf1 Ke5 25. Ke2 Kd4 26. f3 c5 27. g4 c4 28. Bc2 c3 29. a4 Bc4+ 30. Kd1 Bb4 31. f4 Ke3 32. e5 Kxf4 33. exf6 Kxg4 34. Bh7 Bb3+ 35. Bc2 Bxc2+ 36. Kxc2 Kh3 37. Nxc3 Bxc3 38. Kxc3 Kxh2 39. Kd4 Kg3 40. Kd5 Kf4 41. Kd6 Kf5 42. Ke7 Kg6 0-1

[Event "Leiden LCT op 1st"]
[Site "Leiden"]
[Date "2007.07.16"]
[Round "4"]
[White "Serdijn Koster, Adinda"]
[Black "Ouwens, Bert"]
[Result "1-0"]
[ECO "C95"]
[WhiteElo "2034"]
[PlyCount "55"]
[EventDate "2007.07.13"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 119 Extra"]
[Source "ChessBase"]
[SourceDate "2007.09.04"]
[SourceVersion "1"]
[SourceVersionDate "2007.09.04"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 d6 8. c3 0-0 9. h3 Nb8 10. d4 Nbd7 11. a4 Bb7 12. Nbd2 c5 13. d5 c4 14. Bc2 Nc5 15. Nf1 Nfd7 16. Ng3 g6 17. Bh6 Re8 18. Nh2 Bf8 19. Bxf8 Rxf8 20. Qd2 f6 21. h4 Qe7 22. h5 Kg7 23. Ng4 Rh8 24. axb5 axb5 25. Rxa8 Bxa8 26. Qh6+ Kg8 27. hxg6 Qg7 28. Nf5 1-0

[Event "Leiden LCT op 1st"]
[Site "Leiden"]
[Date "2007.07.14"]
[Round "2"]
[White "Serdijn Koster, Adinda"]
[Black "Van der Wiel, John"]
[Result "0-1"]
[ECO "B14"]
[WhiteElo "2034"]
[BlackElo "2487"]
[PlyCount "48"]
[EventDate "2007.07.13"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 119 Extra"]
[Source "ChessBase"]
[SourceDate "2007.09.04"]
[SourceVersion "1"]
[SourceVersionDate "2007.09.04"]
[SourceQuality "1"]

1. e4 c5 2. c3 d5 3. exd5 Nf6 4. d4 cxd4 5. cxd4 Nxd5 6. Nc3 e6 7. Nf3 Bb4 8. Qc2 Nc6 9. Bd3 Nf6 10. Be3 0-0 11. 0-0 h6 12. Rad1 Bd6 13. a3 Bd7 14. d5 exd5 15. Nxd5 Nxd5 16. Bh7+ Kh8 17. Rxd5 Be6 18. Rd2 Qe7 19. Rfd1 Rfd8 20. Be4 Na5 21. Bd5 Rac8 22. Qa4 Bxd5 23. Rxd5 Nc4 24. Bc1 Nb6 0-1

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2007.06.26"]
[Round "7"]
[White "Oosterom, Erik"]
[Black "Serdijn Koster, Adinda"]
[Result "1-0"]
[ECO "A87"]
[WhiteElo "2062"]
[BlackElo "1917"]
[PlyCount "133"]
[EventDate "2007.05.15"]
[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 f5 2. g3 Nf6 3. Bg2 g6 4. Nf3 Bg7 5. c4 0-0 6. 0-0 d6 7. Nc3 Qe8 8. Qb3 Kh8 9. d5 Na6 10. Be3 b6 11. Rad1 Nc5 12. Qc2 e5 13. dxe6 Nxe6 14. Nd4 Nxd4 15. Bxd4 Rb8 16. Nb5 Rf7 17. Nxa7 Bd7 18. Nb5 Bxb5 19. cxb5 Qxb5 20. Bc6 Qa6 21. a4 Ng4 22. b4 Bxd4 23. Rxd4 Rbf8 24. Qc3 Nf6 25. b5 Qc8 26. Rc1 Qe6 27. e3 Re7 28. Bf3 h6 29. Rc4 Rff7 30. a5 bxa5 31. Qxa5 Ne8 32. Bc6 Nf6 33. Bf3 Ne8 34. Qa8 Qe5 35. Bd5 Rg7 36. Bc6 Kh7 37. Bxe8 Rxe8 38. Qa5 c5 39. b6 Rb8 40. Rb1 Rgb7 41. h4 Qd5 42. Rc2 Qc6 43. Rcb2 g5 44. hxg5 hxg5 45. Qa2 d5 46. Rb5 c4 47. Qb2 c3 48. Qb3 c2 49. Rc1 Rxb6 50. Rxb6 Rxb6 51. Qxc2 Qe6 52. g4 Kg6 53. Kg2 Qe4+ 54. Qxe4 dxe4 55. gxf5+ Kxf5 56. Kg3 Rb5 57. Rc8 Kf6 58. Kg4 Rb2 59. Rc6+ Ke5 60. Rc5+ Ke6 61. Rf5 Rb1 62. Kxg5 Rg1+ 63. Kf4 Ra1 64. Re5+ Kf6 65. Rxe4 Ra2 66. f3 Ra3 67. Rb4 1-0

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2007.06.12"]
[Round "5"]
[White "Serdijn Koster, Adinda"]
[Black "Van der Marel, Eric J"]
[Result "1-0"]
[ECO "C90"]
[WhiteElo "1917"]
[BlackElo "1976"]
[PlyCount "73"]
[EventDate "2007.05.15"]
[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 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 d6 8. c3 Nb8 9. d4 Nbd7 10. a4 Bb7 11. Nbd2 0-0 12. Qe2 c6 13. Nf1 Qc7 14. Ng3 Nb6 15. a5 Nc4 16. Bxc4 bxc4 17. Qxc4 Rad8 18. Nf5 Nxe4 19. dxe5 d5 20. Nxe7+ Qxe7 21. Qb3 Rd7 22. Bf4 g5 23. Rxe4 dxe4 24. Nxg5 c5 25. Re1 Rfd8 26. h3 Kg7 27. Qc2 Rd3 28. Nxe4 Bxe4 29. Rxe4 Qh4 30. e6 Qe7 31. Be5+ f6 32. Bd4 c4 33. Qe2 R8xd4 34. cxd4 f5 35. Rf4 Kf6 36. Qe5+ Kg6 37. Qxf5+ 1-0

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2007.06.05"]
[Round "4"]
[White "Landsheer, Jos"]
[Black "Serdijn Koster, Adinda"]
[Result "0-1"]
[ECO "C44"]
[WhiteElo "1699"]
[BlackElo "1917"]
[PlyCount "78"]
[EventDate "2007.05.15"]
[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 e5 2. Nf3 Nc6 3. d4 exd4 4. c3 dxc3 5. Bc4 d6 6. Nxc3 Nf6 7. Qb3 Qd7 8. 0-0 Na5 9. Qb5 Qxb5 10. Nxb5 Nxc4 11. Nxc7+ Kd8 12. Nxa8 Nxe4 13. b3 Na5 14. Ng5 Nxg5 15. Bxg5+ f6 16. Bf4 Be6 17. Rfd1 Kd7 18. b4 Nc4 19. Rd4 Be7 20. Nc7 Kxc7 21. Re1 Ne5 22. b5 Kb8 23. Bd2 Bxa2 24. f4 Ng6 25. Ra1 d5 26. Ra4 Bc5+ 27. Kh1 Bc4 28. Rc1 Re8 29. g3 Re2 30. Bc3 Be3 31. Rca1 Bxb5 32. Rb4 Bc6 33. Bd4 Bxd4 34. Rxd4 Ne7 35. Kg1 Nf5 36. Rd3 d4 37. Raa3 Ne3 38. Rab3 Rg2+ 39. Kh1 Rxg3# 0-1

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2007.05.29"]
[Round "3"]
[White "Serdijn Koster, Adinda"]
[Black "Van der Maat, Niek"]
[Result "0-1"]
[ECO "B01"]
[WhiteElo "1917"]
[BlackElo "1749"]
[PlyCount "102"]
[EventDate "2007.05.15"]
[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 d5 2. exd5 Qxd5 3. Nc3 Qd8 4. d4 Nf6 5. Bg5 c6 6. Bxf6 gxf6 7. Nf3 Bf5 8. Bc4 e6 9. 0-0 Nd7 10. Re1 Nb6 11. Bb3 Bb4 12. Qe2 0-0 13. Rad1 Nd5 14. Bxd5 cxd5 15. Qd2 Bxc3 16. bxc3 Kh8 17. Nh4 Be4 18. f3 Bg6 19. Nxg6+ hxg6 20. Qh6+ Kg8 21. f4 f5 22. Rxe6 fxe6 23. Qxg6+ Kh8 24. Rd3 Qh4 25. Rg3 Rg8 26. Qxe6 Rxg3 27. hxg3 Qxg3 28. Qh6+ Kg8 29. Qe6+ Kh7 30. Qxf5+ Qg6 31. Qxd5 Re8 32. Qxb7+ Kh8 33. Qf3 Re1+ 34. Kf2 Re8 35. f5 Qh6 36. Qd3 Qf4+ 37. Qf3 Qd2+ 38. Kg1 Re1+ 39. Kh2 Qh6+ 40. Qh3 Qxh3+ 41. Kxh3 Re3+ 42. Kg4 Rxc3 43. Kf4 Rxc2 44. g4 Rxa2 45. f6 Rf2+ 46. Ke5 Kg8 47. d5 Kf7 48. g5 a5 49. d6 Rd2 50. g6+ Kxg6 51. Ke6 Re2+ 0-1

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2007.05.22"]
[Round "2"]
[White "Straver, Robert"]
[Black "Serdijn Koster, Adinda"]
[Result "1-0"]
[ECO "D27"]
[WhiteElo "2100"]
[BlackElo "1917"]
[PlyCount "65"]
[EventDate "2007.05.15"]
[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 d5 2. Nf3 Nf6 3. c4 dxc4 4. e3 e6 5. Nc3 a6 6. Bxc4 b5 7. Bb3 Bb7 8. 0-0 c5 9. dxc5 Qxd1 10. Rxd1 Bxc5 11. Bd2 0-0 12. Rac1 Bb6 13. Be1 Nc6 14. Ne2 Rfd8 15. a4 h6 16. axb5 axb5 17. Nc3 Na5 18. Rxd8+ Rxd8 19. Bd1 Nc4 20. Rb1 b4 21. Na4 Ba5 22. Be2 Nd6 23. Nd4 Bd5 24. Nc5 Rb8 25. Na6 Rb6 26. Ra1 Nc4 27. Nc7 Rb7 28. Nxd5 exd5 29. b3 Na3 30. Nc6 Bc7 31. Bxb4 Nc2 32. Ra8+ Bb8 33. Bd6 1-0

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2007.05.15"]
[Round "1"]
[White "Serdijn Koster, Adinda"]
[Black "Siero, Paul"]
[Result "1-0"]
[ECO "C78"]
[WhiteElo "1917"]
[BlackElo "1160"]
[PlyCount "69"]
[EventDate "2007.05.15"]
[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 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 b5 6. Bb3 Bc5 7. c3 d6 8. d4 exd4 9. cxd4 Ba7 10. Bg5 0-0 11. e5 dxe5 12. d5 e4 13. dxc6 Qxd1 14. Bxd1 exf3 15. Bxf3 Bd4 16. Nc3 b4 17. Na4 Bg4 18. Bxf6 Bxf3 19. Bxd4 Bxc6 20. Nc5 a5 21. Be3 a4 22. Rfd1 Rfe8 23. Rac1 b3 24. axb3 axb3 25. Nxb3 Ba4 26. Rd3 Rac8 27. Nc5 Bb5 28. Rd2 c6 29. Rd7 Ra8 30. h3 f6 31. Nb7 Rab8 32. Nd6 Re5 33. Nxb5 Rexb5 34. Rxc6 Rxb2 35. Rcc7 1-0

[Event "Vlissingen HZ op 10th"]
[Site "Vlissingen"]
[Date "2006.08.06"]
[Round "2"]
[White "Serdijn Koster, Adinda"]
[Black "Grooten, Herman"]
[Result "0-1"]
[ECO "B22"]
[WhiteElo "2041"]
[BlackElo "2362"]
[PlyCount "58"]
[EventDate "2006.08.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 113 Extra"]
[Source "ChessBase"]
[SourceDate "2006.09.14"]
[SourceVersion "1"]
[SourceVersionDate "2006.09.14"]
[SourceQuality "1"]

1. e4 c5 2. c3 b6 3. d4 Bb7 4. d5 Nf6 5. Nd2 e6 6. c4 Qc7 7. Ngf3 Bd6 8. Bd3 0-0 9. 0-0 b5 10. dxe6 fxe6 11. cxb5 Bf4 12. Qe2 d5 13. exd5 exd5 14. Qe6+ Kh8 15. g3 Bc8 16. Qe2 Bd6 17. Re1 Bg4 18. Qf1 c4 19. Be2 Bc5 20. Ng5 Nbd7 21. Ndf3 h6 22. Bf4 Qb6 23. Nh4 hxg5 24. Ng6+ Kg8 25. Nxf8 Rxf8 26. Bxg5 Ne5 27. h3 Ne4 28. Bxg4 Rxf2 29. Bf4 Rxf4+ 0-1

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2006.06.27"]
[Round "7"]
[White "Blom, Vincent"]
[Black "Serdijn Koster, Adinda"]
[Result "1-0"]
[ECO "C80"]
[WhiteElo "1718"]
[BlackElo "1976"]
[PlyCount "113"]
[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 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Nxe4 6. Re1 Nc5 7. Bxc6 dxc6 8. Nxe5 Ne6 9. d3 Be7 10. Nc3 0-0 11. Be3 b5 12. Nxc6 Qd6 13. Nxe7+ Qxe7 14. Qd2 Bb7 15. Ne4 h6 16. b4 Rfd8 17. Nc5 Nxc5 18. Bxc5 Qd7 19. f3 Qd5 20. a4 Bc6 21. a5 Re8 22. Qf4 Qd7 23. Qd4 Qxd4+ 24. Bxd4 f6 25. Kf2 Kf7 26. Re3 Rxe3 27. Kxe3 Re8+ 28. Kd2 Bd5 29. Bf2 h5 30. Re1 Rxe1 31. Bxe1 Ke6 32. Ke3 Kd6 33. Kd4 Bc6 34. Bg3+ Kd7 35. Kc5 g5 36. h4 Bb7 37. c4 Bc6 38. hxg5 fxg5 39. Be5 g4 40. fxg4 hxg4 41. g3 bxc4 42. dxc4 Bb7 43. b5 Bc8 44. b6 c6 45. b7 Bxb7 46. Kb6 Bc8 47. Bf4 Kd8 48. Bc7+ Ke7 49. c5 Kd7 50. Bf4 Kd8 51. Kxc6 Bd7+ 52. Kb7 Bc8+ 53. Kb6 Kd7 54. c6+ Kd8 55. Bg5+ Ke8 56. Kc7 Bf5 57. Kb8 1-0

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2006.06.20"]
[Round "6"]
[White "Serdijn Koster, Adinda"]
[Black "Weiland, Harro"]
[Result "1-0"]
[ECO "B22"]
[WhiteElo "1976"]
[BlackElo "1864"]
[PlyCount "55"]
[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. c3 d5 3. exd5 Nf6 4. d4 cxd4 5. cxd4 Nxd5 6. Nc3 e6 7. Nf3 Bb4 8. Bd2 0-0 9. Bd3 Nf6 10. 0-0 Nc6 11. Bg5 Be7 12. Rc1 h6 13. Bh4 Nb4 14. Bb1 b6 15. a3 Nbd5 16. Nxd5 Nxd5 17. Qd3 f5 18. Bxe7 Nxe7 19. Rfe1 Rf6 20. Ba2 Qd6 21. Qc4 Nd5 22. Qc6 Qxc6 23. Rxc6 Kf7 24. Bxd5 exd5 25. Rc7+ Kf8 26. Ree7 Ba6 27. Ne5 Bb5 28. Rxg7 1-0

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2006.06.13"]
[Round "5"]
[White "Vreugdenhil, Frans"]
[Black "Serdijn Koster, Adinda"]
[Result "0-1"]
[ECO "C56"]
[WhiteElo "2054"]
[BlackElo "1976"]
[PlyCount "38"]
[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 e5 2. Nf3 Nc6 3. d4 exd4 4. Bc4 Nf6 5. Ng5 Ne5 6. Bb3 h6 7. f4 hxg5 8. fxe5 Nxe4 9. Bd5 Bb4+ 10. c3 dxc3 11. Bxf7+ Kxf7 12. Qd5+ Ke8 13. Qxe4 cxb2+ 14. Nd2 bxc1Q+ 15. Rxc1 Qe7 16. Rxc7 Kd8 17. Rc2 Re8 18. 0-0 Bxd2 19. Rxd2 Qxe5 0-1

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2006.06.06"]
[Round "4"]
[White "Serdijn Koster, Adinda"]
[Black "Molsbergen, Chris"]
[Result "1-0"]
[ECO "C43"]
[WhiteElo "1976"]
[BlackElo "1516"]
[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. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 4. Bd3 d5 5. dxe5 Bc5 6. 0-0 0-0 7. Nbd2 f5 8. Nb3 Be7 9. c4 Be6 10. Nbd4 Qd7 11. Nxe6 Qxe6 12. cxd5 Qxd5 13. Qe2 Kh8 14. Be3 c5 15. Rfd1 Qc6 16. Rac1 a5 17. Qc2 Na6 18. a3 Nc7 19. Nd2 Nd5 20. Bxe4 fxe4 21. Bxc5 Bxc5 22. Qxc5 Qxc5 23. Rxc5 1-0

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2006.05.30"]
[Round "3"]
[White "Willemze, Thomas"]
[Black "Serdijn Koster, Adinda"]
[Result "1-0"]
[ECO "C48"]
[WhiteElo "2350"]
[BlackElo "1976"]
[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 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bc5 5. 0-0 d6 6. d4 exd4 7. Nxd4 Bd7 8. Bxc6 bxc6 9. Bg5 h6 10. Bh4 0-0 11. Nb3 Bb6 12. a4 a5 13. e5 dxe5 14. Bxf6 gxf6 15. Qh5 Kg7 16. Rad1 Rh8 17. Ne4 Qe7 18. Qh4 Rad8 19. Rd3 Bf5 20. Rf3 Bxe4 21. Qxe4 Qd7 22. c4 Bd4 23. Nxa5 Bxb2 24. Nxc6 Rde8 25. a5 h5 26. a6 f5 27. Rxf5 Rh6 28. Nxe5 Rhe6 29. Rg5+ Kh6 30. Qh4 1-0

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2006.05.23"]
[Round "2"]
[White "Serdijn Koster, Adinda"]
[Black "Roobol, Martin"]
[Result "1/2-1/2"]
[ECO "B06"]
[WhiteElo "1976"]
[BlackElo "2287"]
[PlyCount "64"]
[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 g6 2. d4 Bg7 3. Nc3 d6 4. Be3 a6 5. f4 b5 6. Qd2 Nf6 7. Bd3 Bb7 8. e5 b4 9. Nd1 Ng4 10. Nf3 c5 11. dxc5 dxe5 12. Qxb4 Qc7 13. fxe5 Nxe3 14. Nxe3 Nd7 15. e6 fxe6 16. 0-0 0-0 17. Qg4 Nxc5 18. Ng5 Qe5 19. Nc4 Qd4+ 20. Qxd4 Bxd4+ 21. Kh1 Bd5 22. Rad1 Nxd3 23. cxd3 Bxc4 24. dxc4 Bxb2 25. Nxe6 Rxf1+ 26. Rxf1 Rc8 27. g3 Bf6 28. c5 Kf7 29. Re1 Ke8 30. Rd1 Rc6 31. Re1 Bc3 32. Re3 Bf6 1/2-1/2

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2006.05.16"]
[Round "1"]
[White "Duijnisveld, Arnold"]
[Black "Serdijn Koster, Adinda"]
[Result "0-1"]
[ECO "C45"]
[WhiteElo "1563"]
[BlackElo "1976"]
[PlyCount "72"]
[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 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Nf6 5. Nxc6 bxc6 6. e5 Qe7 7. Qe2 Nd5 8. a3 f6 9. exf6 Nxf6 10. Bg5 Kf7 11. Qxe7+ Bxe7 12. Nc3 Re8 13. Be2 Rb8 14. 0-0-0 Nd5 15. Bd2 Nxc3 16. Bxc3 Bg5+ 17. Bd2 Rxe2 18. Bxg5 Rxf2 19. Rhf1 Rxf1 20. Rxf1+ Kg6 21. Bf4 Ba6 22. Re1 d6 23. Re7 Rc8 24. h4 h6 25. b4 Kf6 26. Re3 Kf5 27. Rf3 Kg4 28. Rf2 Kxh4 29. Be3 g5 30. Kd2 Bc4 31. Rf6 Rh8 32. Bf2+ Kg4 33. a4 a6 34. c3 Re8 35. Be3 h5 36. Rf7 Bxf7 0-1

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2004.06.09"]
[Round "4"]
[White "Bakker, Joop"]
[Black "Serdijn Koster, Adinda"]
[Result "0-1"]
[ECO "A00"]
[WhiteElo "1879"]
[BlackElo "2012"]
[PlyCount "154"]
[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. Nc3 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Nf6 5. Bg5 Be7 6. g3 h6 7. Bf4 Nxd4 8. Qxd4 d6 9. Bg2 0-0 10. 0-0 a6 11. a4 c5 12. Qd2 Qc7 13. e4 Be6 14. Rfe1 Rad8 15. Rad1 Rfe8 16. Qe2 Qc8 17. Rd2 Bg4 18. f3 Bh5 19. Red1 Qc6 20. Nd5 Nxd5 21. Rxd5 Bg6 22. b3 b5 23. axb5 axb5 24. Bf1 b4 25. Qb5 Qc7 26. Bxd6 Bxd6 27. Rxd6 Rxd6 28. Qxe8+ Kh7 29. Bd3 Rd8 30. Qb5 Qe5 31. Qc4 Rd4 32. Qa6 Qg5 33. f4 Qh5 34. Re1 f6 35. Qc8 Qf3 36. Qxc5 Rxe4 37. Rf1 Qe3+ 38. Qxe3 Rxe3 39. Bxg6+ Kxg6 40. Kf2 Rc3 41. Rc1 Kf5 42. Ke2 Kg4 43. Kd2 Kh3 44. Re1 Kxh2 45. g4 Kg3 46. Re4 Kxg4 47. Rxb4 Rc7 48. c4 h5 49. Ke3 h4 50. Kf2 Kxf4 51. c5+ Ke5 52. Rxh4 Rxc5 53. b4 Rc2+ 54. Ke3 Rb2 55. Rg4 g5 56. Re4+ Kf5 57. Rc4 g4 58. Rc5+ Ke6 59. Rc4 f5 60. Rc6+ Ke5 61. Rc5+ Kf6 62. b5 Kg5 63. Rd5 g3 64. Rd8 f4+ 65. Kf3 Rb3+ 66. Kg2 Rxb5 67. Rg8+ Kf5 68. Rf8+ Kg4 69. Rg8+ Rg5 70. Rf8 Ra5 71. Rg8+ Kf5 72. Rf8+ Ke4 73. Re8+ Re5 74. Rf8 Ke3 75. Rf7 Re4 76. Rf8 Ke2 77. Rf7 Ke1 0-1

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2004.06.02"]
[Round "3"]
[White "Plug, Arjan JH"]
[Black "Serdijn Koster, Adinda"]
[Result "1-0"]
[ECO "C35"]
[WhiteElo "1918"]
[BlackElo "2012"]
[PlyCount "61"]
[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 e5 2. f4 exf4 3. Nf3 Be7 4. Bc4 Nf6 5. e5 Ng4 6. 0-0 d6 7. exd6 Qxd6 8. d4 0-0 9. Nc3 Ne3 10. Bxe3 fxe3 11. Ne5 Be6 12. Nb5 Qd8 13. Bxe6 fxe6 14. Qg4 Rf5 15. Rxf5 exf5 16. Qxf5 g6 17. Qe6+ Kg7 18. Rf1 Bf6 19. Qf7+ Kh8 20. Qxf6+ Qxf6 21. Rxf6 Nc6 22. Nxc6 bxc6 23. Nxc7 Rb8 24. Ne6 Kg8 25. Rf8+ Rxf8 26. Nxf8 Kxf8 27. Kf1 Ke7 28. Ke2 Kd6 29. c4 a5 30. Kxe3 Ke6 31. Ke4 1-0

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2004.05.19"]
[Round "1"]
[White "Geragousian, Biaina"]
[Black "Serdijn Koster, Adinda"]
[Result "1-0"]
[ECO "C87"]
[WhiteElo "2034"]
[BlackElo "2012"]
[PlyCount "106"]
[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 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. d3 d6 6. c3 Be7 7. 0-0 0-0 8. Re1 b5 9. Bc2 Bg4 10. Nbd2 Qd7 11. h3 Bh5 12. Nf1 Rfe8 13. Ng3 Bg6 14. Nh4 Nd8 15. Ngf5 Bf8 16. Bg5 Ne6 17. Bxf6 gxf6 18. Bb3 c5 19. Qg4 Rac8 20. Bd5 Kh8 21. Ng3 Bh6 22. Nhf5 Bf4 23. Nh5 Qd8 24. g3 Rg8 25. Kh2 Bxf5 26. Qxf5 Bh6 27. Nxf6 Rg6 28. Ng4 Qg8 29. Nxh6 Rxh6 30. Re3 Rc7 31. Rh1 Qg7 32. Bxe6 fxe6 33. Qf3 Rf7 34. Qe2 Rhf6 35. f3 d5 36. exd5 exd5 37. Rxe5 Rxf3 38. Re8+ Rf8 39. Rxf8+ Rxf8 40. Re1 Qf7 41. Kg2 Kg7 42. Rf1 Qe8 43. Qg4+ Kh8 44. Rxf8+ Qxf8 45. Qe6 Qd8 46. h4 d4 47. Qe5+ Kg8 48. cxd4 cxd4 49. Qg5+ Qxg5 50. hxg5 Kf7 51. Kf3 Kg6 52. Kg4 Kf7 53. Kf5 Kg7 1-0

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2002.07.02"]
[Round "7"]
[White "Van Splunter, Arjen"]
[Black "Serdijn Koster, Adinda"]
[Result "1-0"]
[ECO "C56"]
[WhiteElo "1805"]
[BlackElo "2057"]
[PlyCount "119"]
[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 e5 2. Nf3 Nc6 3. d4 exd4 4. Bc4 Nf6 5. 0-0 Nxe4 6. Re1 d5 7. Bxd5 Qxd5 8. Nc3 Qa5 9. Nxe4 Be6 10. Neg5 0-0-0 11. Nxe6 fxe6 12. Rxe6 Qf5 13. Qe2 Bd6 14. Bg5 Rdf8 15. Re1 h6 16. Bc1 g5 17. Re4 Qg6 18. Qc4 Re8 19. Re6 Qh5 20. Qe2 Rd8 21. h3 Rhf8 22. Nxd4 Qxe2 23. Nxe2 Bc5 24. Be3 Bxe3 25. fxe3 Rd2 26. Rxh6 Rxc2 27. Rg6 Rxb2 28. Rxg5 Rxa2 29. h4 Ra4 30. h5 Re4 31. Rf1 Rxf1+ 32. Kxf1 Rxe3 33. h6 Re7 34. Ng3 Rf7+ 35. Nf5 Ne7 36. g4 Kd7 37. Ke2 Nxf5 38. Rxf5 Ke6 39. Kd3 b6 40. Ke4 Rh7 41. g5 Ke7 42. Re5+ Kd6 43. Kf5 c5 44. Re8 c4 45. g6 Rxh6 46. g7 Rh5+ 47. Kg4 Rh1 48. Re3 Rg1+ 49. Rg3 Rxg3+ 50. Kxg3 b5 51. g8Q Kc5 52. Qf8+ Kb6 53. Qb4 a6 54. Kf4 Kc6 55. Ke5 Kb6 56. Kd5 Kc7 57. Qd6+ Kb7 58. Qc6+ Ka7 59. Qc7+ Ka8 60. Kc6 1-0

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2002.06.25"]
[Round "6"]
[White "Serdijn Koster, Adinda"]
[Black "Plug, Arjan JH"]
[Result "1-0"]
[ECO "B01"]
[WhiteElo "2057"]
[BlackElo "1843"]
[PlyCount "83"]
[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 Nc6 2. d4 d5 3. exd5 Qxd5 4. Nf3 e5 5. Nc3 Bb4 6. Bd2 Bxc3 7. Bxc3 e4 8. Ne5 Nxe5 9. dxe5 Be6 10. Qxd5 Bxd5 11. 0-0-0 0-0-0 12. Be2 Ne7 13. Rhe1 Ng6 14. Bg4+ Kb8 15. Bf5 e3 16. f3 Nf4 17. Rxe3 Nxg2 18. Red3 Nf4 19. R3d2 c6 20. Bb4 Rde8 21. Be4 Be6 22. Bd6+ Kc8 23. a4 g6 24. b4 h5 25. b5 Bd5 26. Bxd5 Nxd5 27. Rd3 Kd7 28. Rb3 Ke6 29. bxc6 bxc6 30. Rb7 a5 31. Rd4 Ra8 32. Kd2 c5 33. Bxc5 Rhc8 34. Bd6 f6 35. c4 Nb4 36. Re7+ Kf5 37. exf6 Kxf6 38. Rf4+ Kg5 39. h4+ Kh6 40. Rff7 Rh8 41. Bf4+ g5 42. Rf6# 1-0

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2002.06.11"]
[Round "4"]
[White "Van Rijn, Luuk"]
[Black "Serdijn Koster, Adinda"]
[Result "0-1"]
[ECO "A00"]
[WhiteElo "1844"]
[BlackElo "2057"]
[PlyCount "131"]
[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. g3 g6 2. Bg2 Bg7 3. Nc3 e5 4. d4 exd4 5. Nb5 Nc6 6. Nf3 Nge7 7. Nbxd4 0-0 8. c3 Nxd4 9. Nxd4 d5 10. Be3 c5 11. Nb3 b6 12. Qd2 Be6 13. Bg5 Re8 14. 0-0 Qd7 15. Rad1 Rad8 16. Qc2 h6 17. Bf4 Bh3 18. Nc1 Bxg2 19. Kxg2 g5 20. Bd2 Ng6 21. Rfe1 Re4 22. f3 Re6 23. e4 Qb7 24. exd5 Rxe1 25. Bxe1 Rxd5 26. Qe4 Rd7 27. Qe8+ Nf8 28. Rxd7 Qxd7 29. Qxd7 Nxd7 30. f4 gxf4 31. gxf4 f5 32. Bh4 Kf7 33. Nd3 Ke6 34. c4 b5 35. b3 bxc4 36. bxc4 Bd4 37. Bd8 Kd6 38. Kf3 Kc6 39. Ke2 Kd6 40. Kf3 Nb8 41. Ba5 Nc6 42. Be1 Bf6 43. Bf2 Bd4 44. Be1 Kc7 45. Bd2 Kb6 46. Ne1 Bb2 47. Nc2 Bf6 48. Be1 Bd4 49. Bd2 Nd8 50. Be1 Nb7 51. Bf2 Bxf2 52. Kxf2 Nd6 53. Ne3 Ka5 54. Kg3 Kb4 55. Kh4 Kc3 56. Kh5 Kd3 57. Nd5 Kxc4 58. Ne3+ Kd4 59. Nd1 Ke4 60. Kxh6 Kxf4 61. h4 Kg4 62. h5 Nf7+ 63. Kg6 Ne5+ 64. Kh6 f4 65. Nf2+ Kh4 66. Ne4 0-1

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2002.05.21"]
[Round "1"]
[White "Serdijn Koster, Adinda"]
[Black "Wagemans, Ed"]
[Result "1-0"]
[ECO "B24"]
[WhiteElo "2057"]
[BlackElo "1864"]
[PlyCount "33"]
[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. Nc3 e6 3. g3 d5 4. d3 Nc6 5. Bg2 Nf6 6. f4 d4 7. Nce2 Be7 8. Nf3 0-0 9. 0-0 b5 10. h3 Qb6 11. g4 Bb7 12. Ng3 Rad8 13. g5 Ne8 14. h4 f5 15. h5 g6 16. hxg6 hxg6 17. Nh4 1-0

[Event "NED-ch sf (Women)"]
[Site "Leeuwarden"]
[Date "2001.12.09"]
[Round "2.2"]
[White "Veenstra, Petra"]
[Black "Serdijn Koster, Adinda"]
[Result "1-0"]
[ECO "C50"]
[WhiteElo "1910"]
[BlackElo "2054"]
[PlyCount "95"]
[EventDate "2001.11.17"]
[EventType "k.o."]
[EventRounds "3"]
[EventCountry "NED"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. Nc3 Nf6 5. d3 d6 6. Bg5 h6 7. Bh4 g5 8. Bg3 Bg4 9. h3 Bh5 10. Na4 Bb6 11. Nxb6 axb6 12. c3 Qd7 13. h4 Ke7 14. Bb3 b5 15. Qd2 Bxf3 16. gxf3 Rhg8 17. 0-0-0 b4 18. d4 bxc3 19. bxc3 exd4 20. e5 dxe5 21. Rhe1 Rad8 22. Bxe5 Nxe5 23. Rxe5+ Kf8 24. hxg5 hxg5 25. Rxg5 Qc6 26. Rxg8+ Nxg8 27. Qc2 Qxf3 28. Rxd4 Re8 29. Qd2 Qc6 30. Rf4 Nh6 31. Qd4 Re1+ 32. Kb2 Re2+ 33. Bc2 Qb5+ 34. Qb4+ Qxb4+ 35. cxb4 Ke7 36. Kc3 f6 37. Re4+ Rxe4 38. Bxe4 b6 39. Kd4 Kd6 40. a4 Ng4 41. f4 c6 42. a5 Kc7 43. a6 Nf2 44. Bf3 f5 45. Ke3 Ng4+ 46. Bxg4 fxg4 47. f5 c5 48. f6 1-0

[Event "NED-ch sf (Women)"]
[Site "Leeuwarden"]
[Date "2001.12.08"]
[Round "2.1"]
[White "Serdijn Koster, Adinda"]
[Black "Veenstra, Petra"]
[Result "1-0"]
[ECO "C92"]
[WhiteElo "2054"]
[BlackElo "1910"]
[PlyCount "125"]
[EventDate "2001.11.17"]
[EventType "k.o."]
[EventRounds "3"]
[EventCountry "NED"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 d6 8. c3 0-0 9. h3 Bb7 10. d4 Re8 11. Nbd2 Bf8 12. Bc2 g6 13. d5 Nb8 14. Nf1 h6 15. Be3 c6 16. dxc6 Nxc6 17. Qd2 Kh7 18. Rad1 Qc7 19. Ng3 Rad8 20. Qe2 d5 21. exd5 Nxd5 22. Ne4 Bg7 23. h4 f5 24. Nc5 Bc8 25. h5 g5 26. a4 Kh8 27. axb5 axb5 28. Nb3 b4 29. cxb4 Ncxb4 30. Bb1 Qf7 31. Nfd2 e4 32. Nc4 Ba6 33. Bc5 Nf4 34. Qe3 Qxc4 35. Na5 Qb5 36. Bxb4 Rxd1 37. Rxd1 Qxb4 38. Nc6 Qc4 39. Qb6 Bb5 40. Nd4 Bxd4 41. Qxh6+ Kg8 42. Qxg5+ Kf8 43. Qxf4 Qc5 44. Rxd4 Qxd4 45. Qxf5+ Ke7 46. Qxb5 Qd1+ 47. Qf1 Qxh5 48. Qe1 Kf6 49. Qc3+ Qe5 50. Kf1 Qxc3 51. bxc3 e3 52. Bd3 exf2 53. Kxf2 Rc8 54. c4 Ke5 55. Ke3 Rg8 56. Be4 Rg3+ 57. Bf3 Rg7 58. c5 Rc7 59. c6 Rg7 60. g4 Ra7 61. Be2 Ra3+ 62. Kd2 Kd6 63. Bd3 1-0

[Event "NED-ch sf (Women)"]
[Site "Leeuwarden"]
[Date "2001.11.18"]
[Round "1.2"]
[White "Serdijn Koster, Adinda"]
[Black "Van Weersel, Brigitta"]
[Result "1-0"]
[ECO "B22"]
[WhiteElo "2060"]
[PlyCount "121"]
[EventDate "2001.11.17"]
[EventType "k.o."]
[EventRounds "3"]
[EventCountry "NED"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 Nf6 5. Nf3 Bg4 6. Be2 Nc6 7. c4 Qd6 8. d5 Nd8 9. Nc3 a6 10. h3 Bf5 11. Be3 e6 12. dxe6 Nxe6 13. Nh4 Bg6 14. Nxg6 hxg6 15. Qxd6 Bxd6 16. Bf3 Rb8 17. Rd1 Ke7 18. 0-0 Rhd8 19. Rfe1 Kf8 20. Nd5 b5 21. Nxf6 gxf6 22. Bd5 Nc7 23. b3 Kg7 24. Rd2 Bf8 25. Red1 Be7 26. Bf4 Bd6 27. Bf3 Bxf4 28. Rxd8 Rb6 29. g3 Be5 30. Rc8 Ne6 31. Rc6 Rxc6 32. Bxc6 Nd4 33. Bb7 bxc4 34. bxc4 a5 35. Kf1 f5 36. Bd5 Ne6 37. Bxe6 fxe6 38. Rd7+ Kf6 39. Ra7 Bc3 40. Ke2 Bb4 41. f3 Ke5 42. Ke3 Kf6 43. g4 g5 44. f4 fxg4 45. hxg4 gxf4+ 46. Kxf4 e5+ 47. Ke4 Kg5 48. Kxe5 Kxg4 49. Kd5 Kf5 50. Rf7+ Kg6 51. Rc7 Kf6 52. Rxc5 Bxc5 53. Kxc5 Ke6 54. Kb6 Kd7 55. a4 Kc8 56. Kc6 Kb8 57. Kd7 Kb7 58. c5 Kb8 59. c6 Ka8 60. c7 Ka7 61. c8Q 1-0

[Event "NED-ch sf (Women)"]
[Site "Leeuwarden"]
[Date "2001.11.17"]
[Round "1.1"]
[White "Van Weersel, Brigitta"]
[Black "Serdijn Koster, Adinda"]
[Result "0-1"]
[ECO "D02"]
[BlackElo "2060"]
[PlyCount "92"]
[EventDate "2001.11.17"]
[EventType "k.o."]
[EventRounds "3"]
[EventCountry "NED"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. d4 d5 2. Bf4 Nf6 3. Nf3 e6 4. e3 c5 5. c3 Be7 6. Be2 0-0 7. Nbd2 Nbd7 8. h3 b6 9. Qc2 Bb7 10. Rc1 Ne4 11. Bd3 Ndf6 12. Ne5 Nxd2 13. Qxd2 Ne4 14. Qc2 f6 15. Nf3 c4 16. Be2 b5 17. Nd2 Nxd2 18. Qxd2 a5 19. b3 b4 20. 0-0 Qb6 21. bxc4 dxc4 22. cxb4 Bxb4 23. Qc2 Rac8 24. Qb1 Qa6 25. Qc2 Qc6 26. Bf3 Qd7 27. Bxb7 Qxb7 28. Rb1 Qe7 29. Rfd1 Rfd8 30. Bg3 c3 31. Rb3 a4 32. Rbb1 Ba3 33. f3 Bb2 34. Qxa4 c2 35. Rxb2 cxd1Q+ 36. Qxd1 Qa3 37. Qd2 Rc3 38. Kf2 Rdc8 39. e4 Qa4 40. Kg1 Rc2 41. Rxc2 Rxc2 42. Qe3 Qxa2 43. Bf2 Qb1+ 44. Be1 Qb2 45. g3 Re2 46. Qc3 Rg2+ 0-1

[Event "NED-ch (Women) sf"]
[Site "Rotterdam"]
[Date "2000.08.31"]
[Round "4.2"]
[White "Muhren, Bianca"]
[Black "Serdijn Koster, Adinda"]
[Result "1/2-1/2"]
[ECO "C52"]
[BlackElo "2060"]
[PlyCount "102"]
[EventDate "2000.08.23"]
[EventType "k.o."]
[EventRounds "5"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. b4 Bxb4 5. c3 Ba5 6. d4 exd4 7. 0-0 d6 8. Nxd4 Nge7 9. Bg5 0-0 10. Nxc6 bxc6 11. Qh5 Bb6 12. Nd2 Be6 13. Ba6 Rb8 14. Nf3 Qd7 15. Nd4 Bg4 16. Qh4 Ng6 17. Qg3 Be6 18. h4 f6 19. Be3 Ne5 20. Be2 Bc4 21. f4 Bxe2 22. Nxe2 Nc4 23. Nd4 Rfe8 24. Qf3 Bxd4 25. cxd4 Qe6 26. Rac1 Nxe3 27. Qxe3 Qxe4 28. Qxe4 Rxe4 29. Rxc6 Rb2 30. Rf3 Rb7 31. d5 Rd4 32. Rfc3 Rxd5 33. Rxc7 Rxc7 34. Rxc7 Ra5 35. Rd7 Rxa2 36. Rxd6 Kf7 37. Rd7+ Kg6 38. h5+ Kxh5 39. Rxg7 Kh6 40. Rg8 a5 41. Kh2 a4 42. Kh3 Ra1 43. Kg4 Rb1 44. Kf5 Rb5+ 45. Kxf6 Ra5 46. Rg3 Kh5 47. Ra3 Kg4 48. g3 h6 49. Ke6 h5 50. Kd6 Kf5 51. Kc6 Ra8 1/2-1/2

[Event "NED-ch (Women) sf"]
[Site "Rotterdam"]
[Date "2000.08.31"]
[Round "4.4"]
[White "Muhren, Bianca"]
[Black "Serdijn Koster, Adinda"]
[Result "1-0"]
[ECO "C50"]
[BlackElo "2060"]
[PlyCount "83"]
[EventDate "2000.08.23"]
[EventType "k.o."]
[EventRounds "5"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. Nc3 Nf6 5. d3 d6 6. Be3 Bb6 7. h3 Be6 8. Bb3 Qd7 9. Qd2 Nd4 10. Bxd4 exd4 11. Ba4 c6 12. Ne2 d5 13. e5 Ng8 14. Nexd4 Ne7 15. 0-0-0 0-0 16. Qg5 Bc7 17. c3 b5 18. Bc2 a5 19. Nxe6 fxe6 20. d4 b4 21. Qh4 Nf5 22. Bxf5 Rxf5 23. Rd3 Bd8 24. Qg3 Be7 25. Nd2 c5 26. Kd1 Qa4+ 27. Ke2 Qxa2 28. cxb4 axb4 29. dxc5 Bxc5 30. Rf3 Rxf3 31. gxf3 Qxb2 32. Rg1 Ra7 33. Qg5 h6 34. Qf6 Re7 35. f4 Qa2 36. Qg6 Qa6+ 37. Kf3 Qa3+ 38. Kg2 Qa7 39. Rc1 d4 40. Ne4 Rc7 41. Nf6+ Kh8 42. Qh7# 1-0

[Event "NED-ch (Women) sf"]
[Site "Rotterdam"]
[Date "2000.08.31"]
[Round "4.3"]
[White "Serdijn Koster, Adinda"]
[Black "Muhren, Bianca"]
[Result "0-1"]
[ECO "B22"]
[WhiteElo "2060"]
[PlyCount "90"]
[EventDate "2000.08.23"]
[EventType "k.o."]
[EventRounds "5"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 Nf6 5. Nf3 Bg4 6. Be2 e6 7. Be3 cxd4 8. cxd4 Nc6 9. 0-0 Be7 10. Nc3 Qd6 11. Qd2 0-0 12. h3 Bh5 13. a3 Rac8 14. Rfe1 Nd5 15. Ne4 Qb8 16. Rad1 Bg6 17. Nc3 Nxc3 18. bxc3 Bxa3 19. Bf4 Bd6 20. Bxd6 Qxd6 21. Nh4 Ne7 22. Nxg6 Nxg6 23. Bf3 Qc7 24. Re3 Rfd8 25. Ra1 b6 26. Qa2 Rd7 27. d5 Qc4 28. Qxc4 Rxc4 29. dxe6 fxe6 30. Bg4 Nf8 31. Rxe6 Rxg4 32. Re8 Rc4 33. Ra8 Rxc3 34. R8xa7 Rxa7 35. Rxa7 b5 36. Rb7 Rb3 37. g4 b4 38. Kg2 Ne6 39. h4 Nf4+ 40. Kg1 Rb1+ 41. Kh2 b3 42. g5 b2 43. f3 Nd3 44. g6 hxg6 45. Rb8+ Kh7 0-1

[Event "NED-ch (Women) sf"]
[Site "Rotterdam"]
[Date "2000.08.30"]
[Round "4.1"]
[White "Serdijn Koster, Adinda"]
[Black "Muhren, Bianca"]
[Result "1/2-1/2"]
[ECO "B22"]
[WhiteElo "2060"]
[PlyCount "176"]
[EventDate "2000.08.23"]
[EventType "k.o."]
[EventRounds "5"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 Nf6 5. Nf3 Bg4 6. Be2 Nc6 7. 0-0 e6 8. Be3 cxd4 9. cxd4 Be7 10. Nc3 Qd6 11. Qd2 0-0 12. h3 Bh5 13. Rad1 Rfd8 14. Rfe1 Rac8 15. a3 a6 16. Bf4 Qd7 17. Ne5 Qe8 18. Nxc6 Rxc6 19. g4 Bg6 20. Bf3 Nd5 21. Nxd5 exd5 22. Re5 Qf8 23. Qe3 Bf6 24. Rxd5 Re6 25. Qd2 Be4 26. Rxd8 Qxd8 27. Bxe4 Rxe4 28. Be5 Bxe5 29. dxe5 Qxd2 30. Rxd2 Kf8 31. Rd7 b5 32. Ra7 Ra4 33. Rb7 Re4 34. Rb6 Rxe5 35. Rxa6 Ke7 36. Kg2 b4 37. axb4 Rb5 38. Ra4 Kd6 39. Kf3 Rb7 40. Ke4 Kc6 41. Kd4 Kb5 42. b3 Rd7+ 43. Kc3 Rc7+ 44. Kb2 Re7 45. Ka3 Re2 46. Ra5+ Kb6 47. Rf5 f6 48. b5 Rd2 49. Kb4 Rd3 50. Kc4 Rxh3 51. Rd5 Rf3 52. Rd6+ Kc7 53. Re6 h6 54. b6+ Kb7 55. b4 Rxf2 56. Kb5 Rd2 57. Re7+ Kb8 58. Rxg7 Re2 59. Rf7 Rg2 60. Rxf6 Rxg4 61. Rxh6 Rg1 62. Rh7 Rg2 63. b7 Rg5+ 64. Ka6 Rg6+ 65. Ka5 Rg5+ 66. b5 Rg6 67. Rd7 Rh6 68. Rg7 Rf6 69. Kb4 Rb6 70. Kc5 Rxb7 71. Rg8+ Ka7 72. Rc8 Rh7 73. Kb4 Kb7 74. Rc6 Rh4+ 75. Ka5 Rh7 76. Rb6+ Ka7 77. Ra6+ Kb7 78. Rb6+ Ka7 79. Rc6 Kb7 80. Rg6 Rf7 81. Rg5 Rh7 82. Kb4 Kb6 83. Rg6+ Kb7 84. Kc5 Rh5+ 85. Kc4 Rh4+ 86. Kc5 Rh5+ 87. Kb4 Rh4+ 88. Ka5 Rh7 1/2-1/2

[Event "NED-ch (Women) sf"]
[Site "Rotterdam"]
[Date "2000.08.29"]
[Round "3.2"]
[White "Serdijn Koster, Adinda"]
[Black "Gerritse, Xanthine"]
[Result "1-0"]
[ECO "C67"]
[WhiteElo "2060"]
[PlyCount "106"]
[EventDate "2000.08.23"]
[EventType "k.o."]
[EventRounds "5"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. 0-0 Nxe4 5. Re1 Nd6 6. Nxe5 Be7 7. Nxc6 dxc6 8. Ba4 0-0 9. d4 b5 10. Bb3 Nf5 11. c3 Bd6 12. Nd2 Qh4 13. Nf3 Qg4 14. Ne5 Qxd1 15. Rxd1 Bb7 16. Bf4 g6 17. Bg5 Kg7 18. Nd7 Rfe8 19. Bf6+ Kg8 20. Ne5 Rf8 21. Rd3 Be7 22. Bxe7 Nxe7 23. Re1 Kg7 24. Nd7 Rfe8 25. Rde3 Bc8 26. Rxe7 Bxd7 27. Rxf7+ Kh8 28. Re3 Rxe3 29. fxe3 Rd8 30. e4 a5 31. a3 c5 32. dxc5 Bc6 33. Rxc7 Bxe4 34. c6 Rd2 35. Rc8+ Kg7 36. Rg8+ Kh6 37. c7 Bb7 38. c8Q Bxc8 39. Rxc8 Rxb2 40. Bd5 Rb1+ 41. Kf2 Ra1 42. Rc5 Rxa3 43. Rxb5 Rxc3 44. Rxa5 Rc7 45. Ke3 g5 46. Ra6+ Kh5 47. g3 Rc3+ 48. Ke4 Rc1 49. h3 Re1+ 50. Kf5 Rf1+ 51. Ke4 g4 52. Bc4 Rf3 53. hxg4+ Kxg4 1-0

[Event "NED-ch (Women) sf"]
[Site "Rotterdam"]
[Date "2000.08.28"]
[Round "3.1"]
[White "Gerritse, Xanthine"]
[Black "Serdijn Koster, Adinda"]
[Result "0-1"]
[ECO "A04"]
[BlackElo "2060"]
[PlyCount "114"]
[EventDate "2000.08.23"]
[EventType "k.o."]
[EventRounds "5"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. Nf3 Nf6 2. b3 c5 3. Bb2 d6 4. d4 cxd4 5. Nxd4 Nc6 6. g3 e5 7. Nf3 Be7 8. Bg2 0-0 9. c4 Re8 10. 0-0 Bf8 11. Nc3 Bg4 12. Nd5 Nxd5 13. Qxd5 Be6 14. Qe4 f5 15. Qe3 h6 16. Rfd1 Qc7 17. Rac1 b6 18. Nh4 g5 19. Nf3 Rad8 20. Ne1 Bg7 21. Bd5 Qd7 22. Rd2 Bxd5 23. Rxd5 Ne7 24. Rd2 Ng6 25. Ba3 Qc6 26. Rcd1 f4 27. Qd3 Re6 28. Qd5 Qxd5 29. Rxd5 Bf8 30. c5 bxc5 31. Bxc5 Rd7 32. Ba3 e4 33. Nc2 Re5 34. Rxe5 Nxe5 35. Rd5 f3 36. Nd4 Kf7 37. exf3 exf3 38. h3 Kg6 39. Nb5 a6 40. Nc3 Kf5 41. g4+ Ke6 42. Ra5 Rc7 43. Nd5 Rc2 44. Nb4 Rd2 45. Rxa6 Bg7 46. Ra5 Nd3 47. Nxd3 Rxd3 48. Kh2 Be5+ 49. Rxe5+ Kxe5 50. Bb2+ Kf4 51. Bc1+ Ke4 52. Kg3 Rd1 53. Bb2 Rg1+ 54. Kh2 Rg2+ 55. Kh1 Rxf2 56. Bg7 Rxa2 57. Bxh6 Kf4 0-1

[Event "NED-ch (Women) sf"]
[Site "Rotterdam"]
[Date "2000.08.26"]
[Round "2.2"]
[White "Serdijn Koster, Adinda"]
[Black "Van Run, Rieke"]
[Result "1-0"]
[ECO "C70"]
[WhiteElo "2060"]
[PlyCount "139"]
[EventDate "2000.08.23"]
[EventType "k.o."]
[EventRounds "5"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Bc5 5. c3 Nge7 6. d4 exd4 7. cxd4 Bb4+ 8. Bd2 Bxd2+ 9. Qxd2 Ng6 10. 0-0 0-0 11. Nc3 d6 12. Rfe1 Bg4 13. Bd1 Bxf3 14. Bxf3 Qd7 15. g3 f5 16. exf5 Qxf5 17. Be4 Qf6 18. Rad1 Rae8 19. Nd5 Qf7 20. Qc2 Rc8 21. Bxg6 hxg6 22. Nf4 g5 23. Ne6 Qf5 24. Qd2 Rfe8 25. Nxg5 Rxe1+ 26. Qxe1 Kf8 27. Qe6 Qxe6 28. Nxe6+ Kf7 29. Ng5+ Kf6 30. f4 Re8 31. Kf2 Nb4 32. a3 Nd5 33. Re1 Rxe1 34. Kxe1 Ne3 35. Ke2 Nc4 36. Ne4+ Kf5 37. Kf3 Nxb2 38. g4+ Kg6 39. f5+ Kf7 40. h4 Nc4 41. a4 b5 42. axb5 axb5 43. g5 b4 44. g6+ Kf8 45. h5 b3 46. Nc3 Na3 47. Kg4 b2 48. Kg5 b1Q 49. Nxb1 Nxb1 50. h6 gxh6+ 51. Kxh6 Kg8 52. f6 Nc3 53. f7+ Kf8 54. g7+ Kxf7 55. Kh7 Ne4 56. g8Q+ Ke7 57. Qg7+ Ke6 58. Kg6 Kd5 59. Kf5 Nc3 60. Qxc7 Kxd4 61. Qxd6+ Kc4 62. Ke5 Kb3 63. Qc6 Kb4 64. Kd4 Nb5+ 65. Kd3 Na3 66. Qb7+ Ka4 67. Qb2 Nb5 68. Kc4 Nd6+ 69. Kc5 Ne4+ 70. Kd4 1-0

[Event "NED-ch (Women) sf"]
[Site "Rotterdam"]
[Date "2000.08.25"]
[Round "2.1"]
[White "Van Run, Rieke"]
[Black "Serdijn Koster, Adinda"]
[Result "1/2-1/2"]
[ECO "C45"]
[BlackElo "2060"]
[PlyCount "75"]
[EventDate "2000.08.23"]
[EventType "k.o."]
[EventRounds "5"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Nf6 5. Nxc6 bxc6 6. Bd3 d5 7. e5 Ng4 8. 0-0 Be6 9. Bf4 h5 10. Qd2 Be7 11. f3 Nh6 12. Qc3 Qd7 13. Be3 Nf5 14. Bxf5 Bxf5 15. Nd2 a5 16. Bc5 0-0 17. Nb3 Rfb8 18. Bxe7 Qxe7 19. Nxa5 Bd7 20. Nb3 Ra4 21. f4 Rc4 22. Qd2 Bf5 23. c3 h4 24. Qe3 Be4 25. Rf2 Bf5 26. Na5 Re4 27. Nxc6 Qe8 28. Qa7 Ra8 29. Qb7 Bd7 30. Nd4 c6 31. Qb3 f6 32. Qd1 fxe5 33. fxe5 Rxe5 34. Qf3 Re3 35. Re2 Rxe2 36. Qxe2 Qg6 37. Qf2 Rxa2 38. Rxa2 1/2-1/2

[Event "NED-ch (Women) sf"]
[Site "Rotterdam"]
[Date "2000.08.24"]
[Round "1.2"]
[White "Van Houwelingen, Iris"]
[Black "Serdijn Koster, Adinda"]
[Result "0-1"]
[ECO "C69"]
[BlackElo "2060"]
[PlyCount "76"]
[EventDate "2000.08.23"]
[EventType "k.o."]
[EventRounds "5"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. 0-0 Bd6 6. d4 exd4 7. Nxd4 Ne7 8. Nc3 0-0 9. f4 f6 10. h3 Ng6 11. Nce2 Re8 12. Qd3 c5 13. Nb3 Be6 14. Qe3 Bf7 15. Nd2 Qe7 16. c4 b5 17. b3 Rab8 18. Ba3 c6 19. g3 Nf8 20. Nc1 Bg6 21. Re1 Nd7 22. Nd3 b4 23. Bb2 Qf8 24. Qf3 Rbc8 25. Rad1 a5 26. g4 Bb8 27. h4 Bf7 28. e5 fxe5 29. Bxe5 Nxe5 30. Nxe5 Bxe5 31. Rxe5 Rxe5 32. fxe5 Qe7 33. Qg3 Rd8 34. g5 Bh5 35. Rf1 Rxd2 36. Rf2 Rxf2 37. Kxf2 Qd7 38. Ke3 Qd4# 0-1

[Event "NED-ch (Women) sf"]
[Site "Rotterdam"]
[Date "2000.08.23"]
[Round "1.1"]
[White "Serdijn Koster, Adinda"]
[Black "Van Houwelingen, Iris"]
[Result "1-0"]
[ECO "C70"]
[WhiteElo "2060"]
[PlyCount "45"]
[EventDate "2000.08.23"]
[EventType "k.o."]
[EventRounds "5"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nge7 5. c3 g6 6. d4 exd4 7. cxd4 b5 8. Bb3 d5 9. Nc3 dxe4 10. Ng5 Qxd4 11. Bxf7+ Kd8 12. Be3 Qxd1+ 13. Rxd1+ Bd7 14. Be6 Ne5 15. Bxd7 Nd3+ 16. Ke2 Kxd7 17. Ncxe4 h6 18. Rxd3+ Kc8 19. Ne6 Kb7 20. Rc1 Rc8 21. N4c5+ Ka7 22. Nd7+ Kb7 23. Ndxf8 1-0

[Event "NED-ch (Women)"]
[Site "Dieren"]
[Date "1992.??.??"]
[Round "?"]
[White "Limbach, Renate"]
[Black "Serdijn Koster, Adinda"]
[Result "1-0"]
[ECO "C62"]
[WhiteElo "2160"]
[PlyCount "67"]
[EventDate "1992.??.??"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2004"]
[Source "ChessBase"]
[SourceDate "2003.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2003.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 d6 5. d4 exd4 6. Nxd4 Bd7 7. Bxc6 bxc6 8. Qf3 Be7 9. e5 dxe5 10. Nxc6 Bxc6 11. Qxc6+ Nd7 12. Be3 0-0 13. 0-0-0 Bd6 14. Ne4 Rc8 15. Nxd6 cxd6 16. Qxd6 Rc7 17. Rd2 Qc8 18. Rhd1 Re8 19. Bg5 h6 20. Be3 Re6 21. Qd3 Ra6 22. a3 Rac6 23. c3 Rc4 24. f3 Qa6 25. Qc2 Nf8 26. Kb1 Qb7 27. Ka2 g5 28. Rd8 Kg7 29. Qf5 Ng6 30. R1d7 Ne7 31. Qxe5+ Kg6 32. Qxe7 Kh5 33. Qxf7+ Kh4 34. Bf2# 1-0

[Event "NED-ch (Women)"]
[Site "Dieren"]
[Date "1992.??.??"]
[Round "?"]
[White "Sziva, Erika"]
[Black "Serdijn Koster, Adinda"]
[Result "1-0"]
[ECO "C83"]
[WhiteElo "2245"]
[PlyCount "99"]
[EventDate "1992.??.??"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2004"]
[Source "ChessBase"]
[SourceDate "2003.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2003.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Nbd2 Nc5 10. c3 Be7 11. Bc2 d4 12. Ne4 dxc3 13. Nxc5 cxb2 14. Bxb2 Bxc5 15. Be4 Na5 16. Bxa8 Qxa8 17. Qc2 Nc4 18. Bc3 Bd5 19. e6 f6 20. Qf5 0-0 21. Rad1 Bxf3 22. gxf3 Ne5 23. Kg2 Qc6 24. Rc1 Ng6 25. Kh1 Ba3 26. Bb2 Qd6 27. Bxa3 Qxa3 28. Rxc7 Re8 29. Rfc1 Nh4 30. Qd5 Qxf3+ 31. Qxf3 Nxf3 32. Ra7 Nd4 33. Rxa6 Nxe6 34. Rb6 Nd4 35. Kg2 Re5 36. Rd1 Ne6 37. Rd7 h6 38. Kf1 Nf4 39. Rbb7 Nh5 40. Rd4 Rc5 41. Rb4 Rc1+ 42. Kg2 g5 43. R4xb5 Nf4+ 44. Kf3 Rc3+ 45. Kg4 Rc2 46. Kf5 Kf8 47. Ra5 Rc8 48. Rh7 Kg8 49. Rha7 Nd3 50. Ra8 1-0

[Event "NED-ch (Women)"]
[Site "Dieren"]
[Date "1991.??.??"]
[Round "5"]
[White "Belle, Erika"]
[Black "Serdijn Koster, Adinda"]
[Result "1-0"]
[ECO "C83"]
[WhiteElo "2100"]
[PlyCount "91"]
[EventDate "1991.??.??"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Nc5 10. Nbd2 Be7 11. Re1 d4 12. cxd4 Nxd4 13. Nxd4 Qxd4 14. Bxe6 Nxe6 15. Qf3 0-0 16. Nb3 Qb6 17. Be3 c5 18. Rac1 Rac8 19. Red1 Rfd8 20. Qe4 Rxd1+ 21. Rxd1 Rd8 22. Rd5 Qc7 23. Bd2 Rxd5 24. Qxd5 Qd8 25. Qxd8+ Bxd8 26. Be3 c4 27. Nc5 Nxc5 28. Bxc5 Bg5 29. Kf1 Bc1 30. Bd4 Kf8 31. Ke2 Ke7 32. Kf3 Bg5 33. Ke4 Ke6 34. f4 f5+ 35. exf6 Bxf6 36. g4 h6 37. h3 a5 38. Bxf6 gxf6 39. Kd4 Kd6 40. a4 bxa4 41. Kxc4 f5 42. Kb5 fxg4 43. hxg4 Kd5 44. Kxa4 Ke4 45. g5 h5 46. g6 1-0

[Event "NED-ch (Women)"]
[Site "Dieren"]
[Date "1991.??.??"]
[Round "7"]
[White "De Kleuver, Esther"]
[Black "Serdijn Koster, Adinda"]
[Result "1-0"]
[ECO "C25"]
[WhiteElo "2120"]
[PlyCount "49"]
[EventDate "1991.??.??"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 e5 2. Nc3 Nc6 3. Bc4 Bc5 4. Qg4 Bf8 5. Qg3 d6 6. d3 Nd4 7. Bb3 Nxb3 8. axb3 Be6 9. Nge2 Nf6 10. 0-0 Nh5 11. Qe3 a6 12. f4 Nxf4 13. Nxf4 exf4 14. Qxf4 Be7 15. Be3 0-0 16. Ne2 Qd7 17. Ng3 d5 18. h3 f6 19. exd5 Bxd5 20. Nf5 Rfe8 21. Qg4 Bc5 22. Nh6+ Kh8 23. Qxd7 Bxe3+ 24. Kh1 Rad8 25. Nf7+ 1-0

[Event "NED-ch (Women)"]
[Site "Dieren"]
[Date "1991.??.??"]
[Round "9"]
[White "Jacquet, Irene"]
[Black "Serdijn Koster, Adinda"]
[Result "0-1"]
[ECO "C44"]
[PlyCount "80"]
[EventDate "1991.??.??"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. c3 f5 4. d4 fxe4 5. Nxe5 Qf6 6. Ng4 Qg6 7. Bf4 d6 8. Ne3 Be7 9. g4 Bd7 10. Be2 h6 11. Nd2 Nf6 12. h3 0-0-0 13. Qc2 d5 14. 0-0-0 Qf7 15. Bg3 h5 16. g5 Ne8 17. h4 Bd6 18. Bxd6 Nxd6 19. Rdf1 g6 20. Nb3 b6 21. Ba6+ Kb8 22. Nd2 Nf5 23. b4 Nfxd4 24. cxd4 Nxb4 25. Qb3 Nxa6 26. Nxe4 Be6 27. Nf6 Kb7 28. f4 c5 29. Qb2 Rc8 30. Kd2 c4 31. Kc3 Nc7 32. a4 Ne8 33. Nxe8 Rhxe8 34. a5 Bf5 35. Nxf5 Qxf5 36. Qd2 Re4 37. Rf3 Rce8 38. Rhf1 Re2 39. Qc1 Ra2 40. Re1 Rxe1 0-1

[Event "NED-ch (Women)"]
[Site "Dieren"]
[Date "1991.??.??"]
[Round "3"]
[White "Limbach, Renate"]
[Black "Serdijn Koster, Adinda"]
[Result "1-0"]
[ECO "C48"]
[WhiteElo "2130"]
[PlyCount "51"]
[EventDate "1991.??.??"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bc5 5. 0-0 d6 6. d4 exd4 7. Nxd4 Bd7 8. Bxc6 bxc6 9. Bg5 h6 10. Bh4 g5 11. Bg3 h5 12. h4 Ng4 13. Nf3 f6 14. Na4 Bb6 15. Nxb6 axb6 16. Qd3 Qe7 17. hxg5 fxg5 18. e5 dxe5 19. Nxe5 Qh7 20. Ng6 Kd8 21. Nxh8 Qxh8 22. Rad1 Qg7 23. Rfe1 Rxa2 24. Bxc7+ Kxc7 25. Qd6+ Kc8 26. Re7 1-0

[Event "NED-ch (Women)"]
[Site "Dieren"]
[Date "1991.??.??"]
[Round "6"]
[White "Serdijn Koster, Adinda"]
[Black "Benschop, Anne Marie"]
[Result "0-1"]
[ECO "C98"]
[BlackElo "2165"]
[PlyCount "134"]
[EventDate "1991.??.??"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 d6 8. c3 0-0 9. h3 Na5 10. Bc2 c5 11. d4 Qc7 12. Nbd2 Nc6 13. d5 Nd8 14. Nf1 c4 15. Ne3 g6 16. Nh2 Nh5 17. Neg4 f6 18. a4 Bb7 19. axb5 axb5 20. Rxa8 Bxa8 21. Nh6+ Kh8 22. Nf5 Ng7 23. Nxg7 Kxg7 24. Ng4 Nf7 25. Be3 Bb7 26. Qd2 Ra8 27. Nh6 Bd8 28. h4 Ra2 29. Bd1 Bc8 30. h5 g5 31. Nxf7 Kxf7 32. Be2 Qa5 33. Qc1 Bb6 34. Bxb6 Qxb6 35. g4 Qa7 36. Kg2 Ra4 37. Kg3 Qa5 38. Qc2 Ba6 39. Rc1 b4 40. Bd1 Ra2 41. Qb1 bxc3 42. Rxc3 Ra1 43. Qc2 Bb5 44. Qe2 Qb4 45. Qd2 Ra2 46. Bb3 Ra1 47. Bd1 Ke7 48. Kf3 Kd8 49. Kg2 Rb1 50. Rc2 Qxd2 51. Rxd2 Kc7 52. Kf3 Kb6 53. Ke3 Kc5 54. Be2 Ba4 55. Bf3 Kb4 56. Be2 Rc1 57. Bf3 Bc2 58. Be2 Kb3 59. Kf3 Kxb2 60. Bxc4 Kc3 61. Rxc2+ Rxc2 62. Bb5 Kd4 63. h6 Rc3+ 64. Kg2 Kxe4 65. Bd7 Kxd5 66. Bf5 Rc7 67. Kf3 Kd4 0-1

[Event "Dieren op"]
[Site "Dieren"]
[Date "1991.??.??"]
[Round "8"]
[White "Serdijn Koster, Adinda"]
[Black "De Vries, Eelco"]
[Result "0-1"]
[ECO "B09"]
[BlackElo "2150"]
[PlyCount "59"]
[EventDate "1991.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. f4 Bg7 5. Nf3 0-0 6. Bd3 Na6 7. 0-0 c5 8. Bxa6 cxd4 9. Nxd4 bxa6 10. f5 Qb6 11. Be3 Qxb2 12. Qd3 Qb7 13. h3 Qc7 14. g4 Bb7 15. g5 Nh5 16. Nd5 Bxd5 17. exd5 Rfc8 18. Rac1 Bxd4 19. Bxd4 Qc4 20. fxg6 hxg6 21. Qxc4 Rxc4 22. c3 e5 23. Kg2 Rac8 24. Rb1 Rxc3 25. Rf3 Nf4+ 26. Kg3 Rc2 27. Ra3 Nxh3 28. Kg4 Rf8 29. Kxh3 Rb8 30. Re3 0-1

[Event "NED-ch (Women)"]
[Site "Dieren"]
[Date "1991.??.??"]
[Round "8"]
[White "Serdijn Koster, Adinda"]
[Black "De Vries, Sylvia"]
[Result "0-1"]
[ECO "B09"]
[BlackElo "2150"]
[PlyCount "84"]
[EventDate "1991.??.??"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. f4 Bg7 5. Nf3 0-0 6. Bd3 Na6 7. 0-0 c5 8. Bxa6 cxd4 9. Nxd4 bxa6 10. f5 Qb6 11. Be3 Qxb2 12. Qd3 Qb7 13. h3 Qc7 14. g4 Bb7 15. g5 Nh5 16. Nd5 Bxd5 17. exd5 Rfc8 18. Rac1 Bxd4 19. Bxd4 Qc4 20. fxg6 hxg6 21. Qxc4 Rxc4 22. c3 e5 23. dxe6 fxe6 24. Kg2 Rac8 25. Rb1 e5 26. Bxa7 Rxc3 27. Rf3 Nf4+ 28. Kg3 Rc2 29. Ra3 Kf7 30. Rbb3 Rh8 31. Kg4 Ke6 32. Rxa6 Nxh3 33. Bb8 Nf2+ 34. Kg3 Ne4+ 35. Kg4 Rf8 36. a4 Rg2+ 37. Kh3 Rxg5 38. Kh2 Rh8+ 39. Rh3 Rxb8 40. Re3 Rh8+ 41. Rh3 Rxh3+ 42. Kxh3 Nc5 0-1

[Event "NED-ch (Women)"]
[Site "Dieren"]
[Date "1991.??.??"]
[Round "1"]
[White "Serdijn Koster, Adinda"]
[Black "Harmsen, Jessica MM"]
[Result "1/2-1/2"]
[ECO "C06"]
[BlackElo "2190"]
[PlyCount "92"]
[EventDate "1991.??.??"]
[EventType "tourn"]
[EventRounds "9"]
[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. Nd2 Nf6 4. e5 Nfd7 5. Bd3 c5 6. c3 Nc6 7. Ngf3 Qb6 8. Qa4 cxd4 9. cxd4 f6 10. exf6 Nxf6 11. 0-0 Bd7 12. Qb3 Qc7 13. Qc2 Bd6 14. Nb3 0-0-0 15. Bd2 Kb8 16. Rfe1 Bc8 17. Rac1 Rhf8 18. h3 Nh5 19. Bg5 Rxf3 20. gxf3 Rf8 21. Qe2 Bf4 22. Bxf4 Nxf4 23. Qf1 e5 24. Rxe5 Bxh3 25. Qd1 Nxd3 26. Qxd3 Nxe5 27. dxe5 Qxe5 28. f4 Qf5 29. Qg3 Bg4 30. f3 Bh5 31. Nc5 Ka8 32. Qxg7 Qg6+ 33. Qxg6 Bxg6 34. Ne6 Rg8 35. Kf2 Kb8 36. Rd1 Re8 37. f5 Bxf5 38. Ng7 Re5 39. f4 Bg4 40. fxe5 Bxd1 41. e6 Ba4 42. e7 Kc7 43. e8Q Bxe8 44. Nxe8+ Kc6 45. Nf6 h6 46. Ke3 Kc5 1/2-1/2

[Event "NED-ch (Women)"]
[Site "Dieren"]
[Date "1991.??.??"]
[Round "4"]
[White "Serdijn Koster, Adinda"]
[Black "Jansen, Peggy"]
[Result "1-0"]
[ECO "B14"]
[BlackElo "2100"]
[PlyCount "102"]
[EventDate "1991.??.??"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. c4 Nf6 5. Nc3 g6 6. Qb3 Bg7 7. cxd5 0-0 8. Be2 b6 9. Bf3 Bb7 10. Nge2 Qd7 11. Bf4 Rd8 12. Rc1 Na6 13. Qa3 Ne8 14. 0-0 Nd6 15. Rfd1 Nc7 16. Bxd6 exd6 17. Ng3 Bh6 18. Rc2 Rac8 19. Qxa7 Ne8 20. Qxb6 Rb8 21. Qb5 Qe7 22. Qe2 Qf8 23. Re1 Rd7 24. Nge4 Bg7 25. Qd1 h6 26. Rce2 Ba6 27. Rd2 f5 28. Ng3 g5 29. Be2 Bxe2 30. Rdxe2 f4 31. Nf1 f3 32. gxf3 Nf6 33. Ng3 h5 34. Nge4 Nh7 35. Qa4 Rdd8 36. Nd2 Nf6 37. Qc2 Nh7 38. Qg6 h4 39. Re7 Qf6 40. Re8+ Nf8 41. Qxf6 Bxf6 42. Rxd8 Rxd8 43. Nde4 Bxd4 44. Nxg5 Rb8 45. Re4 Bf6 46. Rg4 Rxb2 47. Nge4+ Kf7 48. Rf4 Nd7 49. Nxf6 Nxf6 50. Ne4 h3 51. Rxf6+ Kg7 1-0

[Event "NED-ch (Women)"]
[Site "Dieren"]
[Date "1991.??.??"]
[Round "2"]
[White "Serdijn Koster, Adinda"]
[Black "Van de Vorst, Christel"]
[Result "1-0"]
[ECO "B14"]
[PlyCount "79"]
[EventDate "1991.??.??"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. c4 Nf6 5. Nc3 e6 6. Nf3 Bb4 7. Qb3 Nc6 8. c5 0-0 9. Bd2 b6 10. Bb5 Bxc3 11. Qxc3 Bd7 12. Bxc6 Bxc6 13. Ne5 Rc8 14. Nxc6 Rxc6 15. b4 Ne4 16. Qe3 bxc5 17. dxc5 Nxd2 18. Qxd2 d4 19. 0-0 Qd5 20. a3 e5 21. Qa2 Rd8 22. Qxd5 Rxd5 23. f3 f5 24. Rfe1 Kf7 25. Rad1 Re6 26. Kf2 Ke7 27. Ke2 e4 28. Kd2 Kd7 29. Kc2 Rg6 30. fxe4 fxe4 31. Rxe4 Rxg2+ 32. Rd2 Rxd2+ 33. Kxd2 a5 34. Kd3 axb4 35. axb4 Kc6 36. Kc4 Rh5 37. b5+ Kc7 38. b6+ Kc6 39. Re6+ Kb7 40. Re7+ 1-0

[Event "Baden-Baden op"]
[Site "Baden-Baden"]
[Date "1989.??.??"]
[Round "?"]
[White "Bunk, Karsten"]
[Black "Serdijn Koster, Adinda"]
[Result "0-1"]
[ECO "A36"]
[PlyCount "100"]
[EventDate "1989.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. c4 g6 2. Nc3 Bg7 3. g3 Nf6 4. Bg2 0-0 5. d3 d6 6. e4 c5 7. Rb1 Nc6 8. Nge2 Bd7 9. 0-0 Qc8 10. Re1 a6 11. a3 Rb8 12. b4 cxb4 13. axb4 b5 14. cxb5 axb5 15. Bd2 Bg4 16. f3 Bh3 17. Bh1 Nxb4 18. Be3 Nc6 19. Rxb5 Qa6 20. Qb1 e5 21. d4 Nd7 22. dxe5 Ndxe5 23. Rb6 Rxb6 24. Qxb6 Qc4 25. Nd5 Rb8 26. Qc7 Rb2 27. Nef4 Qc2 28. Ne2 Qxe2 29. Rxe2 Rb1+ 30. Bc1 Nd3 31. Ne7+ Kh8 32. Qc8+ Bxc8 33. Nxc8 Rxc1+ 34. Kg2 Bd4 35. Rd2 Rg1+ 36. Kh3 Nf2+ 37. Rxf2 Bxf2 38. Bg2 Nb4 39. Nxd6 Nc2 40. Nxf7+ Kg7 41. Ne5 Ne1 42. Ng4 Rxg2 43. f4 Bd4 44. e5 Ra2 45. Nf6 h5 46. Ne4 Nf3 47. g4 Nxh2 48. gxh5 gxh5 49. Ng5 Nf1 50. Ne6+ Kh6 0-1

[Event "Baden-Baden op"]
[Site "Baden-Baden"]
[Date "1987.??.??"]
[Round "1"]
[White "Serdijn Koster, Adinda"]
[Black "Milatz, Gunther"]
[Result "1-0"]
[ECO "B43"]
[PlyCount "47"]
[EventDate "1987.07.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "TD"]
[Source "ChessBase"]
[SourceDate "1994.03.01"]
[SourceVersion "1"]
[SourceVersionDate "1994.03.01"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 Qc7 6. Be2 Nf6 7. 0-0 Bb4 8. Qd3 Bxc3 9. bxc3 d5 10. exd5 Nxd5 11. Ba3 Qxc3 12. Qxc3 Nxc3 13. Bf3 Nd7 14. Rfe1 Nf6 15. Nf5 Nb5 16. Nxg7+ Kd7 17. Red1+ Kc7 18. Bb2 Ne8 19. a4 Rg8 20. Nxe8+ Rxe8 21. Be5+ Kb6 22. axb5 a5 23. Bd4+ Kxb5 24. Rdb1+ 1-0

[Event "Baden-Baden op"]
[Site "Baden-Baden"]
[Date "1987.??.??"]
[Round "2"]
[White "Serdijn Koster, Adinda"]
[Black "Schmidt, B."]
[Result "0-1"]
[ECO "C18"]
[PlyCount "86"]
[EventDate "1987.07.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "TD"]
[Source "ChessBase"]
[SourceDate "1994.03.01"]
[SourceVersion "1"]
[SourceVersionDate "1994.03.01"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Ba5 6. b4 cxd4 7. Qg4 Ne7 8. bxa5 dxc3 9. Qxg7 Rg8 10. Qxh7 Nbc6 11. f4 Qxa5 12. Rb1 Bd7 13. Rxb7 0-0-0 14. Rb5 Qa4 15. Qd3 d4 16. Ne2 Kc7 17. Ng3 Rb8 18. Rxb8 Rxb8 19. Be2 Rb1 20. 0-0 Nd5 21. Ne4 Rxc1 22. Rxc1 Nxf4 23. Qf3 Ng6 24. Nc5 Qxa3 25. Na6+ Kc8 26. Rb1 Ngxe5 27. Qf6 Be8 28. Nb4 Nd7 29. Qh8 Nxb4 30. Qxe8+ Kc7 31. Bb5 Nc6 32. Qa8 Nce5 33. Bxd7 Nxd7 34. Rb7+ Kd6 35. Qc8 Qc1+ 36. Kf2 Qxc2+ 37. Kg3 Qd3+ 38. Kh4 Qe4+ 39. Kh3 Qc6 40. Rxd7+ Qxd7 41. Qb8+ Ke7 42. Qb4+ Kf6 43. Qf8 e5+ 0-1

