[Event "IBCA Wch blind (Women) 04th"]
[Site "Guardamar del Segura"]
[Date "1997.11.23"]
[Round "8"]
[White "Fries, Elisabeth"]
[Black "Derks, Ria"]
[Result "0-1"]
[ECO "E20"]
[PlyCount "30"]
[EventDate "1997.11.15"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "ESP"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]

1. d4 g6 2. c4 Nf6 3. Nc3 e6 4. Bg5 c6 5. a3 d5 6. e3 Bg7 7. Nf3 0-0 8. e4 dxe4 9. Nxe4 Nbd7 10. Ne5 Nxe5 11. dxe5 Qxd1+ 12. Rxd1 Nxe4 13. Be7 Re8 14. Bd6 Rd8 15. c5 Bxe5 0-1

[Event "IBCA Wch blind (Women) 04th"]
[Site "Guardamar del Segura"]
[Date "1997.11.21"]
[Round "7"]
[White "Derks, Ria"]
[Black "Salas Rasilla, Concepcion"]
[Result "0-1"]
[ECO "A57"]
[PlyCount "61"]
[EventDate "1997.11.15"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "ESP"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 b5 4. a3 bxc4 5. Nc3 g6 6. e4 d6 7. Bxc4 Bg7 8. Nf3 0-0 9. 0-0 Ba6 10. Qd3 Bxc4 11. Qxc4 Nbd7 12. Na4 Rb8 13. Rb1 Nb6 14. Nxb6 Rxb6 15. b3 Qb8 16. Bf4 Rc8 17. Rfc1 Rc7 18. e5 Ne8 19. exd6 exd6 20. Bg3 a6 21. b4 cxb4 22. Qh4 Rxc1+ 23. Rxc1 h6 24. Nd4 bxa3 25. Qe4 a2 26. Bf4 Rb1 27. Nc2 Rxc1+ 28. Bxc1 a1Q 29. Nxa1 Bxa1 30. h3 Bg7 31. Be3 0-1

[Event "IBCA Wch blind (Women) 04th"]
[Site "Guardamar del Segura"]
[Date "1997.11.20"]
[Round "6"]
[White "Derks, Ria"]
[Black "Zbun, Lidia"]
[Result "0-1"]
[ECO "D15"]
[PlyCount "44"]
[EventDate "1997.11.15"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "ESP"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]

1. d4 d5 2. c4 dxc4 3. Nc3 c6 4. e4 b5 5. Nf3 Nf6 6. e5 Nd5 7. Qc2 Bg4 8. Be2 Bh5 9. Qd1 e6 10. 0-0 Nxc3 11. bxc3 Nd7 12. a3 Nb6 13. g3 c5 14. Nh4 Bxe2 15. Qxe2 cxd4 16. Rd1 d3 17. Qb2 Qd5 18. a4 Nxa4 19. Qd2 Qxe5 20. Re1 Qxc3 21. Qxc3 Nxc3 22. Nf5 Ne2+ 0-1

[Event "IBCA Wch blind (Women) 04th"]
[Site "Guardamar del Segura"]
[Date "1997.11.19"]
[Round "5"]
[White "Sanchez Ruiz, Piedad Esmeralda"]
[Black "Derks, Ria"]
[Result "1-0"]
[ECO "B13"]
[PlyCount "80"]
[EventDate "1997.11.15"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "ESP"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. Bd3 Nc6 5. c3 Nf6 6. Bf4 Bg4 7. Qb3 Qd7 8. Nd2 Nh5 9. Be3 e5 10. dxe5 Nxe5 11. Bb5 Nc6 12. Ngf3 Be7 13. 0-0 0-0 14. Ne5 Qe6 15. Nxg4 Qxg4 16. Qxd5 Nf4 17. Qf3 Qxf3 18. Nxf3 Ng6 19. Rfe1 Bf6 20. Rad1 a6 21. Bxc6 bxc6 22. Bg5 Bxg5 23. Nxg5 h6 24. Ne4 Rfe8 25. Nc5 Re5 26. Rxe5 Nxe5 27. b3 a5 28. Kf1 Ng4 29. h3 Nf6 30. c4 Kh7 31. Rd6 Rc8 32. Nb7 Ne4 33. Rd3 Ra8 34. Nd8 c5 35. Nxf7 Rf8 36. Re3 Nd2+ 37. Ke1 Rxf7 38. Kxd2 Rxf2+ 39. Re2 Rf6 40. Kc3 Rf5 1-0

[Event "IBCA Wch blind (Women) 04th"]
[Site "Guardamar del Segura"]
[Date "1997.11.18"]
[Round "4"]
[White "Derks, Ria"]
[Black "Potocnik, Silvia"]
[Result "1-0"]
[ECO "D20"]
[PlyCount "45"]
[EventDate "1997.11.15"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "ESP"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]

1. d4 d5 2. c4 dxc4 3. e4 b5 4. Nc3 a6 5. Be2 Bb7 6. Bf3 Nd7 7. Nge2 e5 8. 0-0 Bd6 9. Qc2 Ne7 10. b3 Nb6 11. Rd1 h6 12. dxe5 Nec8 13. exd6 cxd6 14. Bf4 Qf6 15. e5 dxe5 16. Bxb7 exf4 17. Bxa8 Nxa8 18. Qe4+ Qe6 19. Qxa8 0-0 20. Nxf4 Qe5 21. Nfd5 Re8 22. f4 Qe6 23. Kh1 1-0

[Event "IBCA Wch blind (Women) 04th"]
[Site "Guardamar del Segura"]
[Date "1997.11.17"]
[Round "3"]
[White "Aarons, Tamara"]
[Black "Derks, Ria"]
[Result "0-1"]
[ECO "B13"]
[PlyCount "62"]
[EventDate "1997.11.15"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "ESP"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. Nf3 Nf6 5. Bd3 Bg4 6. 0-0 e6 7. h3 Bh5 8. Nc3 Be7 9. Bf4 Nc6 10. Nb5 0-0 11. c3 a6 12. Na3 Nd7 13. Bc2 e5 14. Bh2 e4 15. g4 Bxa3 16. bxa3 exf3 17. gxh5 Qg5+ 18. Bg3 Qxh5 19. Kh2 Nf6 20. Rh1 Rfe8 21. Qd3 Re4 22. Bd1 Ng4+ 23. Kg1 Re1+ 24. Qf1 Rxf1+ 25. Kxf1 Nf6 26. Rb1 b5 27. a4 Ne4 28. Rc1 Re8 29. Bb3 Qg5 30. Re1 Nd2+ 31. Kg1 Rxe1+ 0-1

[Event "IBCA Wch blind (Women) 04th"]
[Site "Guardamar del Segura"]
[Date "1997.11.16"]
[Round "2"]
[White "Derks, Ria"]
[Black "Perszewska, Krystyna"]
[Result "0-1"]
[ECO "D45"]
[PlyCount "126"]
[EventDate "1997.11.15"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "ESP"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bd2 c6 5. Nf3 Be7 6. e3 Nbd7 7. Bd3 dxc4 8. Bxc4 0-0 9. e4 Nb6 10. Bb3 c5 11. e5 Nfd5 12. Nxd5 Nxd5 13. 0-0 cxd4 14. Nxd4 Bc5 15. Nf3 Be7 16. Qc2 Bd7 17. Bxd5 exd5 18. Rad1 Be6 19. Nd4 Rc8 20. Qb1 Qc7 21. Bf4 Bc5 22. b4 Be7 23. Rc1 Qd7 24. a3 a6 25. Rfe1 b5 26. Re2 Rxc1+ 27. Qxc1 Rc8 28. Rc2 Rc4 29. Rxc4 dxc4 30. Qc3 Bd5 31. f3 g6 32. Bh6 Be6 33. Qe3 Bf8 34. Bxf8 Kxf8 35. Nxe6+ Qxe6 36. Qd4 Kg7 37. f4 h6 38. h3 h5 39. Kh2 Kf8 40. Kg1 Ke7 41. Kf2 f6 42. Qc5+ Ke8 43. exf6 Qxf6 44. Qc8+ Kf7 45. Qc7+ Qe7 46. Qxe7+ Kxe7 47. Ke3 Kd6 48. Kd4 Ke6 49. g3 Kf5 50. Ke3 g5 51. fxg5 Kxg5 52. Kd4 Kf5 53. g4+ hxg4 54. hxg4+ Kxg4 55. Ke3 Kf5 56. Kd2 Kf4 57. Kc3 Ke3 58. a4 Ke4 59. a5 Ke3 60. Kc2 Kd4 61. Kd2 c3+ 62. Kd1 Kc4 63. Kc2 Kxb4 0-1

[Event "IBCA Wch blind (Women) 04th"]
[Site "Guardamar del Segura"]
[Date "1997.11.15"]
[Round "1"]
[White "Kuebel, Hannelore"]
[Black "Derks, Ria"]
[Result "1-0"]
[ECO "B12"]
[PlyCount "69"]
[EventDate "1997.11.15"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "ESP"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]

1. e4 c6 2. d4 d6 3. Nf3 Bg4 4. h3 Bxf3 5. Qxf3 Nd7 6. Bc4 e6 7. c3 b5 8. Bd3 Be7 9. 0-0 a6 10. Nd2 Ngf6 11. Qe2 0-0 12. f4 e5 13. Nf3 exf4 14. Bxf4 Nh5 15. Bh2 c5 16. Rad1 c4 17. Bb1 Nb6 18. e5 g6 19. g4 Ng7 20. Qf2 d5 21. Bf4 g5 22. Bg3 f6 23. Qc2 f5 24. gxf5 Nxf5 25. Nh2 Rf7 26. Rxf5 Rg7 27. Rdf1 Qd7 28. Ng4 Qe6 29. Kh2 h5 30. Nf6+ Bxf6 31. Rxf6 Qe7 32. Rxb6 h4 33. Be1 g4 34. hxg4 Qg5 35. Rg6 1-0

