[Event "Leiden Noteboom Memorial 68th"]
[Site "Leiden"]
[Date "2008.02.02"]
[Round "3"]
[White "Lalic, Bogdan"]
[Black "Van Roosmalen, Sjoerd"]
[Result "1-0"]
[ECO "A55"]
[WhiteElo "2507"]
[BlackElo "2199"]
[PlyCount "123"]
[EventDate "2008.02.01"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 122 Extra"]
[Source "ChessBase"]
[SourceDate "2008.03.04"]
[SourceVersion "1"]
[SourceVersionDate "2008.03.04"]
[SourceQuality "1"]

1. c4 c6 2. e4 e5 3. Nf3 d6 4. d4 Nd7 5. Nc3 Ngf6 6. Be2 Be7 7. 0-0 0-0 8. Be3 Re8 9. d5 c5 10. Ne1 Nf8 11. Nd3 Ng6 12. f3 h6 13. Qd2 Bd7 14. a3 Rb8 15. b4 b6 16. Rab1 Nh7 17. g3 Ng5 18. Rb3 a6 19. Rfb1 Nh3+ 20. Kh1 Qc7 21. Qb2 Ra8 22. bxc5 bxc5 23. Rb7 Qd8 24. Qb6 Bc8 25. Qxd8 Bxd8 26. R7b2 Bd7 27. Bd1 f5 28. Kg2 f4 29. Bd2 Ba5 30. Ba4 Bxa4 31. Nxa4 Bxd2 32. Rxd2 Ng5 33. h4 Nf7 34. h5 Ngh8 35. gxf4 exf4 36. Rb6 g5 37. e5 Rxe5 38. Nxe5 Nxe5 39. Rdb2 Nxc4 40. Rb8+ Rxb8 41. Rxb8+ Kg7 42. Nc3 Nxa3 43. Rb6 Nf7 44. Rxa6 Nc4 45. Kf2 Ne3 46. Ra7 Kf8 47. Ra8+ Kg7 48. Re8 Ne5 49. Re7+ Kf8 50. Re6 g4 51. Rf6+ Ke7 52. Rxf4 Nc2 53. Ra4 gxf3 54. Ne4 Nd4 55. Ra7+ Kf8 56. Nxd6 Kg8 57. Ne4 Ng4+ 58. Kg3 Ne3 59. d6 Nef5+ 60. Kf2 Kf8 61. Ra8+ Kf7 62. d7 1-0

[Event "Leiden Noteboom Memorial 68th"]
[Site "Leiden"]
[Date "2008.02.01"]
[Round "1"]
[White "Van Roosmalen, Sjoerd"]
[Black "Van Oosterom, Chiel"]
[Result "1-0"]
[ECO "D31"]
[WhiteElo "2199"]
[BlackElo "2408"]
[PlyCount "33"]
[EventDate "2008.02.01"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 122 Extra"]
[Source "ChessBase"]
[SourceDate "2008.03.04"]
[SourceVersion "1"]
[SourceVersionDate "2008.03.04"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nf3 e6 4. Nc3 dxc4 5. e3 b5 6. a4 Bb4 7. Bd2 a5 8. axb5 Bxc3 9. Bxc3 cxb5 10. b3 Nf6 11. bxc4 Ne4 12. Bb2 bxc4 13. Bxc4 0-0 14. Bd3 Bb7 15. Ba3 Re8 16. 0-0 Nd7 17. Qb1 1-0

[Event "Dieren op"]
[Site "Dieren"]
[Date "2007.08.02"]
[Round "9"]
[White "Schenkeveld, Daniel"]
[Black "Van Roosmalen, Sjoerd"]
[Result "0-1"]
[ECO "A55"]
[WhiteElo "2085"]
[BlackElo "2240"]
[PlyCount "112"]
[EventDate "2007.07.24"]
[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. c4 c6 2. e4 e5 3. Nf3 d6 4. d4 Nd7 5. Be2 Ngf6 6. Nc3 Be7 7. 0-0 0-0 8. h3 a6 9. a4 a5 10. Be3 Qc7 11. d5 Ne8 12. Nh2 Nc5 13. g4 h6 14. f4 exf4 15. Bxf4 Qb6 16. Kh1 Qxb2 17. Rf3 Qb6 18. Rg3 Bh4 19. Rg1 Bf6 20. Rb1 Qd8 21. Qd2 Qe7 22. Bf3 g5 23. Bg3 Bxc3 24. Qxc3 Nxe4 25. Bxe4 Qxe4+ 26. Nf3 cxd5 27. cxd5 Qxd5 28. Kh2 Be6 29. Rb5 Rc8 30. Qe3 Rc5 31. Rgb1 Nf6 32. Be5 Qe4 33. Qxe4 Nxe4 34. Rxc5 dxc5 35. Rxb7 Rd8 36. Rb8 Rxb8 37. Bxb8 c4 38. Bc7 c3 39. Nd4 Bd7 40. Bxa5 Bxa4 41. Kg2 Bd1 42. Kf1 h5 43. gxh5 c2 44. Nb3 Kh7 45. Bb4 Kh6 46. Ba3 Kxh5 47. Nd4 Kg6 48. Kg2 f6 49. Kf1 f5 50. Kg2 f4 51. Bc1 Nc5 52. h4 Nd3 53. Bd2 f3+ 54. Kh3 f2 55. Kg2 gxh4 56. Kf1 h3 0-1

[Event "Dieren op"]
[Site "Dieren"]
[Date "2007.08.01"]
[Round "8"]
[White "Van Roosmalen, Sjoerd"]
[Black "Klein, Dominik"]
[Result "1-0"]
[ECO "A65"]
[WhiteElo "2240"]
[BlackElo "1935"]
[PlyCount "87"]
[EventDate "2007.07.24"]
[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. d4 Nf6 2. c4 g6 3. f3 Bg7 4. e4 d6 5. Nc3 0-0 6. Bg5 c5 7. d5 e6 8. Qd2 exd5 9. cxd5 a6 10. a4 h6 11. Bf4 Re8 12. Bd3 Qa5 13. Ra3 Nbd7 14. Bxd6 Ne5 15. Bxe5 Rxe5 16. Nge2 Re8 17. 0-0 Bd7 18. Rd1 Rac8 19. Nb1 Qc7 20. a5 Qd6 21. Bc4 h5 22. Nbc3 h4 23. Qf4 Re5 24. Qxh4 g5 25. Qf2 Nh5 26. Na4 Bxa4 27. Rxa4 Bf8 28. Ng3 Nf4 29. Nf5 Qg6 30. Qg3 Bd6 31. Nxd6 Qxd6 32. Qg4 Rd8 33. Raa1 Qf6 34. Rac1 Ree8 35. Bf1 Rc8 36. b3 Ng6 37. Qg3 Kh7 38. d6 Red8 39. d7 Rc6 40. Rd5 Kh6 41. Rcd1 Nf4 42. Rf5 Qg6 43. Rxf4 gxf4 44. Qh4+ 1-0

[Event "Dieren op"]
[Site "Dieren"]
[Date "2007.07.31"]
[Round "7"]
[White "Haast, Anne"]
[Black "Van Roosmalen, Sjoerd"]
[Result "1-0"]
[ECO "B80"]
[WhiteElo "2001"]
[BlackElo "2240"]
[PlyCount "73"]
[EventDate "2007.07.24"]
[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. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 Ng4 7. Bc1 Nf6 8. f3 e6 9. Be3 Be7 10. Qd2 0-0 11. 0-0-0 Nc6 12. g4 Nxd4 13. Bxd4 b5 14. g5 Nd7 15. h4 b4 16. Ne2 a5 17. f4 Bb7 18. Ng3 e5 19. Be3 exf4 20. Bxf4 Ne5 21. Bd3 b3 22. Kb1 bxa2+ 23. Ka1 Qc7 24. Nf5 Rfd8 25. h5 Bf8 26. g6 fxg6 27. hxg6 Nxg6 28. Qh2 Nxf4 29. Qxh7+ Kf7 30. Rdf1 d5 31. Rh4 dxe4 32. Rhxf4 Qxf4 33. Rxf4 exd3 34. Nxg7+ Ke7 35. Ne8+ Bg7 36. Qxg7+ Ke6 37. Qf7+ 1-0

[Event "Dieren op"]
[Site "Dieren"]
[Date "2007.07.30"]
[Round "6"]
[White "Van Roosmalen, Sjoerd"]
[Black "Kabanof, Nikolai"]
[Result "0-1"]
[ECO "A42"]
[WhiteElo "2240"]
[BlackElo "2282"]
[PlyCount "70"]
[EventDate "2007.07.24"]
[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. d4 g6 2. c4 Bg7 3. Nc3 d6 4. e4 Nc6 5. Nge2 e5 6. d5 Nce7 7. Ng3 Nh6 8. Bd2 f5 9. exf5 Nexf5 10. Nge4 Nf7 11. Bd3 a6 12. 0-0 0-0 13. b4 Bh6 14. Bxh6 N7xh6 15. c5 Nd4 16. Qd2 Kg7 17. cxd6 cxd6 18. Kh1 Bf5 19. Rab1 Bxe4 20. Nxe4 Nhf5 21. b5 axb5 22. Bxb5 Rf7 23. Bd3 h6 24. Rb2 Nh4 25. f3 Qf8 26. Be2 b5 27. Qe1 g5 28. Bxb5 Nxb5 29. Rxb5 Rxa2 30. Nd2 Rfa7 31. g3 Nf5 32. Ne4 Nd4 33. Qb1 Nxb5 34. Qxb5 Ra1 35. Rxa1 Qxf3+ 0-1

[Event "Dieren op"]
[Site "Dieren"]
[Date "2007.07.28"]
[Round "5"]
[White "Rietveld, Renze"]
[Black "Van Roosmalen, Sjoerd"]
[Result "1-0"]
[ECO "B80"]
[WhiteElo "2137"]
[BlackElo "2240"]
[PlyCount "91"]
[EventDate "2007.07.24"]
[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. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 Ng4 7. Bc1 Nf6 8. f3 e6 9. Be3 Be7 10. Qd2 0-0 11. 0-0-0 Nc6 12. g4 Nxd4 13. Bxd4 b5 14. g5 Nd7 15. h4 b4 16. Ne2 a5 17. Be3 Ne5 18. Nd4 Bb7 19. Rg1 Rc8 20. h5 Nc6 21. g6 Nxd4 22. Qxd4 e5 23. Qd2 Rc6 24. Bh3 Bc8 25. h6 hxg6 26. Bxc8 Qxc8 27. hxg7 Kxg7 28. Bh6+ Kh7 29. Bxf8 Bxf8 30. Kb1 Rc4 31. Qd5 Kg7 32. Rh1 Qc7 33. Rd2 a4 34. Rdh2 a3 35. Qa8 Qc8 36. Qd5 Qc7 37. Qa8 Qc8 38. Rh7+ Kf6 39. Qd5 Qc7 40. b3 Rd4 41. Qa8 Rd2 42. c4 bxc3 43. Qxf8 Rb2+ 44. Ka1 c2 45. Qg7+ Ke6 46. Qxg6+ 1-0

[Event "Dieren op"]
[Site "Dieren"]
[Date "2007.07.27"]
[Round "4"]
[White "Van Roosmalen, Sjoerd"]
[Black "Friesen, Boris"]
[Result "1/2-1/2"]
[ECO "D91"]
[WhiteElo "2240"]
[BlackElo "2139"]
[PlyCount "60"]
[EventDate "2007.07.24"]
[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. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. Bg5 Ne4 6. cxd5 Nxg5 7. Nxg5 e6 8. Nf3 exd5 9. e3 c6 10. Be2 0-0 11. b4 Re8 12. Qb3 a6 13. a4 Bf5 14. 0-0 Nd7 15. Rfc1 Nf6 16. b5 axb5 17. axb5 Qd6 18. Na4 Ne4 19. h3 h5 20. Nc3 Rxa1 21. Rxa1 Nxc3 22. Qxc3 c5 23. Ra7 cxd4 24. Nxd4 Qb6 25. Ra4 Bd7 26. Qb3 Qc5 27. Bf1 Bf6 28. Qd1 Kg7 29. Ra1 Rc8 30. Rb1 b6 1/2-1/2

[Event "Dieren op"]
[Site "Dieren"]
[Date "2007.07.26"]
[Round "3"]
[White "Bosch, Jeroen"]
[Black "Van Roosmalen, Sjoerd"]
[Result "1-0"]
[ECO "B90"]
[WhiteElo "2435"]
[BlackElo "2240"]
[PlyCount "45"]
[EventDate "2007.07.24"]
[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. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bd3 Qc7 7. 0-0 b5 8. a4 b4 9. Na2 Bb7 10. Re1 e5 11. Nf3 Nc6 12. Bd2 Qb6 13. a5 Qxa5 14. Nxb4 Qb6 15. Nd5 Nxd5 16. exd5 Nb4 17. Bxb4 Qxb4 18. c3 Qg4 19. Qb3 Qc8 20. Nxe5 Be7 21. Qa4+ Kf8 22. Nd7+ Kg8 23. Rxe7 1-0

[Event "Dieren op"]
[Site "Dieren"]
[Date "2007.07.25"]
[Round "2"]
[White "Van Roosmalen, Sjoerd"]
[Black "Barua, Dibyendu"]
[Result "1/2-1/2"]
[ECO "D35"]
[WhiteElo "2240"]
[BlackElo "2462"]
[PlyCount "66"]
[EventDate "2007.07.24"]
[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. d4 e6 2. c4 Nf6 3. Nc3 d5 4. cxd5 exd5 5. Bg5 c6 6. e3 Qb6 7. Bxf6 Qxb2 8. Qc1 Qxc1+ 9. Rxc1 gxf6 10. Nxd5 Ba3 11. Rc4 Kd8 12. Ra4 cxd5 13. Rxa3 Nc6 14. Bd3 Kc7 15. Ne2 Kd6 16. Kd2 Be6 17. Rc1 h6 18. Nf4 Rhc8 19. Rac3 Nb4 20. Rxc8 Rxc8 21. Rxc8 Bxc8 22. a3 Nxd3 23. Kxd3 b6 24. Kc3 Ba6 25. Nh5 f5 26. Nf4 Bf1 27. Kb4 Kc6 28. Kc3 a5 29. h4 Kd6 30. g3 Ba6 31. Kb3 Bc4+ 32. Kc3 Ba6 33. Kb3 Bc4+ 1/2-1/2

[Event "Dieren op"]
[Site "Dieren"]
[Date "2007.07.24"]
[Round "1"]
[White "Blees, Enrico"]
[Black "Van Roosmalen, Sjoerd"]
[Result "0-1"]
[ECO "B90"]
[WhiteElo "2057"]
[BlackElo "2240"]
[PlyCount "78"]
[EventDate "2007.07.24"]
[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. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 Ng4 7. Bg5 h6 8. Bh4 g5 9. Bg3 Bg7 10. Be2 h5 11. h3 h4 12. hxg4 hxg3 13. Rxh8+ Bxh8 14. fxg3 Qb6 15. Nd5 Qxb2 16. c3 Kd8 17. Rb1 Qa3 18. Qd2 Bf6 19. Rb4 Nd7 20. Nxf6 Nxf6 21. e5 Ne4 22. Nc6+ bxc6 23. Rxe4 d5 24. Rb4 a5 25. Rb3 Qc5 26. Kf1 a4 27. Rb1 Ba6 28. Bxa6 Rxa6 29. Qxg5 Rb6 30. Rxb6 Qxb6 31. Qg8+ Kd7 32. Qxf7 Qb1+ 33. Kf2 Qxa2+ 34. Kg1 Qb1+ 35. Kh2 a3 36. c4 a2 37. cxd5 a1Q 38. Qe6+ Kd8 39. Qg8+ Kc7 0-1

[Event "Dieren op"]
[Site "Dieren"]
[Date "2006.08.03"]
[Round "9"]
[White "Van Roosmalen, Sjoerd"]
[Black "Van Herwaarden, Arjen"]
[Result "1-0"]
[ECO "E81"]
[WhiteElo "2266"]
[PlyCount "117"]
[EventDate "2006.07.25"]
[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. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 0-0 6. Bg5 Nc6 7. Qd2 a6 8. Nge2 Rb8 9. d5 Ne5 10. Ng3 c6 11. Be2 b5 12. cxb5 axb5 13. dxc6 b4 14. c7 Qxc7 15. Nb5 Qa5 16. a4 Bd7 17. 0-0 Rfc8 18. b3 h5 19. Rfc1 Nc6 20. Bh6 Bh8 21. Bc4 Ne5 22. Bf1 h4 23. Nh1 h3 24. Rxc8+ Rxc8 25. Rc1 Rxc1 26. Qxc1 hxg2 27. Kxg2 Qa8 28. Ng3 d5 29. Nc7 Qb7 30. Ba6 Qb6 31. exd5 Nxd5 32. Nxd5 Qxa6 33. Nxe7+ Kh7 34. Bf8 Bg7 35. Bxg7 Kxg7 36. Qg5 f6 37. Nef5+ Kf7 38. Nh6+ Kg7 39. Nh5+ Kh7 40. Nxf6+ Kg7 41. Nh5+ Kh7 42. Nf6+ Kg7 43. Qxe5 Qxf6 44. Ng4 Qxe5 45. Nxe5 Be6 46. Nc6 Bxb3 47. a5 Bd5 48. Nxb4 Ba8 49. a6 Kf6 50. a7 Ke6 51. Kg3 Kd6 52. f4 Kc5 53. Nd3+ Kb6 54. Ne5 Kxa7 55. Nxg6 Be4 56. Ne7 Kb7 57. f5 Kc7 58. Kf4 Bc2 59. Ke5 1-0

[Event "Dieren op"]
[Site "Dieren"]
[Date "2006.08.02"]
[Round "8"]
[White "Van Weersel, Arlette"]
[Black "Van Roosmalen, Sjoerd"]
[Result "0-1"]
[ECO "B44"]
[WhiteElo "2155"]
[BlackElo "2266"]
[PlyCount "98"]
[EventDate "2006.07.25"]
[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. c4 Nc6 3. Ne2 Nf6 4. Nbc3 e6 5. d4 cxd4 6. Nxd4 Bb4 7. Nxc6 bxc6 8. Bd3 e5 9. 0-0 0-0 10. Be3 d6 11. Na4 Ng4 12. Qe2 Nxe3 13. Qxe3 Qa5 14. Bc2 Be6 15. Qd3 Bc5 16. Nxc5 Qxc5 17. b3 Rfd8 18. Kh1 a5 19. Rad1 Rd7 20. f4 f6 21. Rd2 Rad8 22. h3 Bf7 23. fxe5 Qxe5 24. Rf5 Qa1+ 25. Rd1 Qb2 26. Rxa5 c5 27. Rb1 Qe5 28. Rf1 Qe7 29. Ra6 Qe5 30. Bd1 h5 31. Bf3 g6 32. Rg1 Kg7 33. g4 hxg4 34. Bxg4 Be6 35. Qf3 Rh8 36. Bxe6 Qxe6 37. Kg2 Rh5 38. a4 Re5 39. Re1 Rg5+ 40. Kf2 Qe5 41. Re2 f5 42. exf5 Qd4+ 43. Qe3 Qh4+ 44. Kf1 Rxf5+ 45. Kg2 Re5 46. Qc3 Rf7 47. Rc2 Kh7 48. Qd3 Rg5+ 49. Kh1 Qe1+ 0-1

[Event "Dieren op"]
[Site "Dieren"]
[Date "2006.08.01"]
[Round "7"]
[White "Van Roosmalen, Sjoerd"]
[Black "Jonker, Fred"]
[Result "0-1"]
[ECO "D45"]
[WhiteElo "2266"]
[BlackElo "2141"]
[PlyCount "67"]
[EventDate "2006.07.25"]
[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. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 e6 5. e3 Nbd7 6. Qc2 Bd6 7. g4 dxc4 8. g5 Nd5 9. Bxc4 N7b6 10. Bb3 Qe7 11. e4 Nxc3 12. bxc3 c5 13. e5 Bc7 14. Ba3 Nd7 15. Ba4 0-0 16. Qe4 Ba5 17. Rc1 Rb8 18. Bxd7 Qxd7 19. Bxc5 Rd8 20. Bxa7 Ra8 21. Bc5 b6 22. Bd6 Bb7 23. Qe3 Qc6 24. Ke2 Qc4+ 25. Ke1 Qd5 26. Ke2 Qxa2+ 27. Kf1 Rdc8 28. Kg2 Qb2 29. Kg3 Bxc3 30. Rhd1 Ba5 31. Ng1 Rxc1 32. Rxc1 Bd2 33. Rb1 Qxb1 34. Qxd2 0-1

[Event "Dieren op"]
[Site "Dieren"]
[Date "2006.07.31"]
[Round "6"]
[White "Beeke, Bobby"]
[Black "Van Roosmalen, Sjoerd"]
[Result "1/2-1/2"]
[ECO "B87"]
[WhiteElo "2166"]
[BlackElo "2266"]
[PlyCount "57"]
[EventDate "2006.07.25"]
[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. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bc4 e6 7. 0-0 b5 8. Bb3 b4 9. Na4 Bd7 10. f3 Nc6 11. Be3 Be7 12. Qd2 Rb8 13. c3 bxc3 14. Nxc6 Bxc6 15. Nxc3 0-0 16. Rac1 d5 17. Nxd5 Bxd5 18. exd5 Nxd5 19. Bxd5 exd5 20. Rfd1 Bf6 21. b4 Re8 22. a3 Bb2 23. Rb1 Bxa3 24. Bd4 a5 25. bxa5 Bd6 26. a6 Ra8 27. a7 Qc7 28. h3 Bc5 29. Kh1 1/2-1/2

[Event "Dieren op"]
[Site "Dieren"]
[Date "2006.07.29"]
[Round "5"]
[White "Van Roosmalen, Sjoerd"]
[Black "Van Vliet, Gert Jan"]
[Result "1/2-1/2"]
[ECO "E25"]
[WhiteElo "2266"]
[PlyCount "41"]
[EventDate "2006.07.25"]
[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. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. f3 d5 5. a3 Bxc3+ 6. bxc3 c5 7. cxd5 Nxd5 8. Bd2 cxd4 9. cxd4 Qh4+ 10. g3 Qxd4 11. Qc1 Nc6 12. e4 Nf6 13. Ne2 Qd6 14. Qb2 Ne5 15. Ng1 Nd3+ 16. Bxd3 Qxd3 17. Kf2 Bd7 18. Ne2 Rc8 19. Rac1 0-0 20. Bc3 Bc6 21. Bxf6 1/2-1/2

[Event "Dieren op"]
[Site "Dieren"]
[Date "2006.07.27"]
[Round "3"]
[White "Mellema, Andries"]
[Black "Van Roosmalen, Sjoerd"]
[Result "1/2-1/2"]
[ECO "B80"]
[WhiteElo "2035"]
[BlackElo "2266"]
[PlyCount "42"]
[EventDate "2006.07.25"]
[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. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e6 7. a4 b6 8. g3 Bb7 9. Bg2 Qc7 10. 0-0 Nc6 11. Nxc6 Bxc6 12. h3 Be7 13. Qd4 0-0 14. Qxb6 Qxb6 15. Bxb6 Rab8 16. a5 Nd7 17. Na4 Bxa4 18. Rxa4 Nxb6 19. axb6 Rxb6 20. Rb1 Bf6 21. Bf1 Bxb2 1/2-1/2

[Event "Dieren op"]
[Site "Dieren"]
[Date "2006.07.26"]
[Round "2"]
[White "Van Roosmalen, Sjoerd"]
[Black "Senff, Martin"]
[Result "0-1"]
[ECO "D37"]
[WhiteElo "2266"]
[BlackElo "2464"]
[PlyCount "84"]
[EventDate "2006.07.25"]
[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. d4 d5 2. c4 e6 3. Nc3 Be7 4. Nf3 Nf6 5. Bf4 0-0 6. e3 c6 7. a3 b6 8. Bd3 Bb7 9. cxd5 exd5 10. Ne5 Nbd7 11. Qe2 Nxe5 12. Bxe5 Bd6 13. Bxd6 Qxd6 14. Ba6 Bxa6 15. Qxa6 Rfe8 16. Rd1 Re7 17. h3 Qd7 18. b4 Ne8 19. 0-0 Nd6 20. b5 cxb5 21. Nxd5 Ree8 22. Rc1 Rac8 23. f3 f5 24. Rfe1 Rxc1 25. Rxc1 Qe6 26. e4 fxe4 27. Nc7 Qb3 28. Rf1 Rc8 29. Qxa7 Qe3+ 30. Kh2 Qf4+ 31. Kg1 exf3 32. Qxb6 Qe3+ 33. Kh1 fxg2+ 34. Kxg2 Qe4+ 35. Kg1 Qe7 36. Na6 h6 37. Nb4 Rc3 38. Qb8+ Kh7 39. Qa8 Qg5+ 40. Kf2 Qg3+ 41. Ke2 Qe3+ 42. Kd1 Rc1# 0-1

[Event "Dieren op"]
[Site "Dieren"]
[Date "2006.07.25"]
[Round "1"]
[White "Smits, Sebastiaan"]
[Black "Van Roosmalen, Sjoerd"]
[Result "0-1"]
[ECO "B20"]
[WhiteElo "2054"]
[BlackElo "2266"]
[PlyCount "84"]
[EventDate "2006.07.25"]
[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. d3 Nc6 3. g3 g6 4. Bg2 Bg7 5. f4 d6 6. Nf3 e6 7. 0-0 Nge7 8. c3 d5 9. Na3 Qa5 10. e5 b5 11. Be3 b4 12. cxb4 cxb4 13. Nc2 Nf5 14. Bf2 h5 15. Qe2 Qb5 16. Rfc1 Ba6 17. Bf1 0-0 18. h3 Rfc8 19. g4 hxg4 20. hxg4 Nfe7 21. Ng5 d4 22. Ne4 Nd5 23. Qf3 Qb6 24. Be2 Bb7 25. Bh4 b3 26. axb3 Na5 27. Rxa5 Qxa5 28. Bf6 Nxf6 29. exf6 Bxe4 30. Qxe4 Bxf6 31. b4 Qa2 32. f5 Qxb2 33. Rf1 exf5 34. gxf5 g5 35. Bd1 Re8 36. Qc6 Kg7 37. Rf2 Qc1 38. Qf3 Rh8 39. Kg2 Rh4 40. Kg1 Rah8 41. Rf1 Qd2 42. Qg2 Rh1+ 0-1

[Event "Dieren op"]
[Site "Dieren"]
[Date "2005.08.04"]
[Round "9"]
[White "Duijker, Rick"]
[Black "Van Roosmalen, Sjoerd"]
[Result "1/2-1/2"]
[ECO "D00"]
[WhiteElo "2250"]
[BlackElo "2089"]
[PlyCount "80"]
[EventDate "2005.07.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 107 Extra"]
[Source "ChessBase"]
[SourceDate "2005.09.01"]
[SourceVersion "1"]
[SourceVersionDate "2005.09.01"]
[SourceQuality "1"]

1. d4 d5 2. c3 c6 3. Bg5 Bf5 4. Nd2 Nd7 5. f3 Ngf6 6. Nh3 Qb6 7. Qb3 Qxb3 8. axb3 Bxh3 9. gxh3 h6 10. Bh4 e5 11. Bxf6 gxf6 12. e3 Rg8 13. b4 Bd6 14. Kf2 Nf8 15. Nb3 Ne6 16. Nc5 Bxc5 17. bxc5 Kd7 18. Bd3 b6 19. b4 bxc5 20. bxc5 Rgb8 21. Rhb1 Rxb1 22. Rxb1 Kc7 23. Ba6 Rb8 24. Rxb8 Kxb8 25. Bd3 a5 26. Bc2 Nc7 27. Ke2 Nb5 28. Kd2 Kc7 29. f4 Na3 30. Bd3 Kb7 31. Kc1 Nc4 32. Bxc4 dxc4 33. Kb2 exf4 34. exf4 Ka6 35. f5 Kb5 36. Ka3 h5 37. h4 a4 38. Kb2 Ka5 39. Ka2 Kb5 40. Ka3 Ka5 1/2-1/2

[Event "Dieren op"]
[Site "Dieren"]
[Date "2005.08.03"]
[Round "8"]
[White "Van Roosmalen, Sjoerd"]
[Black "Gouw, Carol Peter"]
[Result "1-0"]
[ECO "A85"]
[WhiteElo "2089"]
[BlackElo "2164"]
[PlyCount "53"]
[EventDate "2005.07.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 107 Extra"]
[Source "ChessBase"]
[SourceDate "2005.09.01"]
[SourceVersion "1"]
[SourceVersionDate "2005.09.01"]
[SourceQuality "1"]

1. d4 e6 2. c4 f5 3. Nc3 Nf6 4. e3 Bb4 5. Bd3 Bxc3+ 6. bxc3 0-0 7. Ba3 Re8 8. Qc2 Nc6 9. Ne2 d6 10. c5 dxc5 11. Bxc5 b6 12. Ba3 e5 13. Bc4+ Kh8 14. Bf7 Re7 15. Bxe7 Qxe7 16. Bc4 Na5 17. Bd3 e4 18. Bb5 c6 19. Ba4 Ba6 20. Bb3 c5 21. Qd2 Rd8 22. 0-0 Ng4 23. f3 exf3 24. Rxf3 Qc7 25. Rh3 Bb7 26. Nf4 Qe7 27. Ng6# 1-0

[Event "Dieren op"]
[Site "Dieren"]
[Date "2005.08.02"]
[Round "7"]
[White "Van Zutphen, Jimmy"]
[Black "Van Roosmalen, Sjoerd"]
[Result "1-0"]
[ECO "D00"]
[WhiteElo "2216"]
[BlackElo "2089"]
[PlyCount "95"]
[EventDate "2005.07.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 107 Extra"]
[Source "ChessBase"]
[SourceDate "2005.09.01"]
[SourceVersion "1"]
[SourceVersionDate "2005.09.01"]
[SourceQuality "1"]

1. d4 d5 2. c3 c6 3. Bg5 Bf5 4. e3 Nd7 5. Bd3 Bxd3 6. Qxd3 Ngf6 7. Nd2 e6 8. f4 Be7 9. Ngf3 h6 10. Bh4 Nh7 11. Bxe7 Qxe7 12. 0-0 f5 13. Ne5 Nxe5 14. dxe5 Nf8 15. c4 0-0-0 16. Qc3 Kb8 17. c5 g5 18. Nf3 gxf4 19. exf4 Rg8 20. Nd4 Rg4 21. b4 Nd7 22. Rac1 Rdg8 23. Rf2 Ka8 24. a4 Nb8 25. b5 h5 26. Rb1 Qg7 27. Qb2 Qe7 28. bxc6 Nxc6 29. Nxe6 Rb8 30. Nd4 Qxc5 31. Nxc6 Qxc6 32. Rc2 Qb6+ 33. Qxb6 axb6 34. g3 h4 35. Kf2 hxg3+ 36. hxg3 Rh8 37. Kf3 Rhg8 38. Rg1 Kb8 39. Rd2 Rd8 40. Ke3 b5 41. axb5 Kc7 42. Kd4 Rdg8 43. Rc2+ Kd7 44. Kxd5 Rxf4 45. gxf4 Rxg1 46. e6+ Kd8 47. Ke5 Rb1 48. Kf6 1-0

[Event "Dieren op"]
[Site "Dieren"]
[Date "2005.08.01"]
[Round "6"]
[White "Van Roosmalen, Sjoerd"]
[Black "Burg, Twan"]
[Result "1/2-1/2"]
[ECO "E81"]
[WhiteElo "2089"]
[BlackElo "2218"]
[PlyCount "85"]
[EventDate "2005.07.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 107 Extra"]
[Source "ChessBase"]
[SourceDate "2005.09.01"]
[SourceVersion "1"]
[SourceVersionDate "2005.09.01"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. f3 Bg7 4. e4 d6 5. Nc3 0-0 6. Bg5 Nc6 7. Nge2 a6 8. Qd2 Rb8 9. d5 Ne5 10. Nd4 h5 11. Be2 Nh7 12. Bh6 c5 13. Nc2 f6 14. Bxg7 Kxg7 15. f4 Nf7 16. Ne3 Nh6 17. f5 Qe8 18. 0-0 g5 19. Qd1 h4 20. Bh5 Qd8 21. g3 hxg3 22. hxg3 Rh8 23. Kg2 b5 24. Rh1 Bd7 25. Bg6 Nf8 26. Qh5 bxc4 27. Rab1 Nf7 28. Qe2 Nxg6 29. fxg6 Ne5 30. Rxh8 Qxh8 31. Rh1 Qe8 32. Rh7+ Kg8 33. Rh8+ Kg7 34. Rxe8 Rxe8 35. Nxc4 Bg4 36. Qf1 Rh8 37. Kf2 Nf3 38. Ke3 Rh2 39. a4 Nd4 40. Na5 Rxb2 41. Qh1 Kxg6 42. Qh8 Nc2+ 43. Kd3 1/2-1/2

[Event "Dieren op"]
[Site "Dieren"]
[Date "2005.07.30"]
[Round "4"]
[White "Janssen, Ger"]
[Black "Van Roosmalen, Sjoerd"]
[Result "1/2-1/2"]
[ECO "A12"]
[WhiteElo "2236"]
[BlackElo "2089"]
[PlyCount "38"]
[EventDate "2005.07.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 107 Extra"]
[Source "ChessBase"]
[SourceDate "2005.09.01"]
[SourceVersion "1"]
[SourceVersionDate "2005.09.01"]
[SourceQuality "1"]

1. c4 Nf6 2. g3 c6 3. Nf3 d5 4. b3 Bg4 5. Bg2 Nbd7 6. Bb2 e6 7. 0-0 Bd6 8. h3 Bh5 9. Nc3 0-0 10. d3 Bxf3 11. exf3 Rb8 12. f4 b5 13. cxb5 cxb5 14. Ne2 Qb6 15. Qd2 b4 16. Rac1 Qa6 17. Rc2 Rbc8 18. Rfc1 Rxc2 19. Rxc2 Nc5 1/2-1/2

[Event "Dieren op"]
[Site "Dieren"]
[Date "2005.07.30"]
[Round "5"]
[White "Van Leent, Dmitri"]
[Black "Van Roosmalen, Sjoerd"]
[Result "1/2-1/2"]
[ECO "B90"]
[WhiteElo "2261"]
[BlackElo "2089"]
[PlyCount "53"]
[EventDate "2005.07.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 107 Extra"]
[Source "ChessBase"]
[SourceDate "2005.09.01"]
[SourceVersion "1"]
[SourceVersionDate "2005.09.01"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 Ng4 7. Bg5 h6 8. Bh4 g5 9. Bg3 Bg7 10. Qd2 Nc6 11. Nb3 Be6 12. 0-0-0 a5 13. Bb5 Nge5 14. Nd5 Bd7 15. a4 Nb4 16. Bxd7+ Qxd7 17. Qe2 Nxd5 18. exd5 Qxa4 19. Rd4 Qd7 20. Nd2 a4 21. Nb1 Rc8 22. h4 Nf3 23. Rc4 Bxb2+ 24. Kxb2 Qb5+ 25. Kc3 Qa5+ 26. Kb2 Qb5+ 27. Kc3 1/2-1/2

[Event "Dieren op"]
[Site "Dieren"]
[Date "2005.07.28"]
[Round "3"]
[White "Van Roosmalen, Sjoerd"]
[Black "Boersma, Jan"]
[Result "1/2-1/2"]
[ECO "A65"]
[WhiteElo "2089"]
[BlackElo "2237"]
[PlyCount "82"]
[EventDate "2005.07.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 107 Extra"]
[Source "ChessBase"]
[SourceDate "2005.09.01"]
[SourceVersion "1"]
[SourceVersionDate "2005.09.01"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. f3 Bg7 4. e4 0-0 5. Nc3 c5 6. d5 d6 7. Bg5 e6 8. Qd2 h6 9. Be3 exd5 10. cxd5 a6 11. a4 Re8 12. Nge2 h5 13. Nc1 Qa5 14. Ra3 Nbd7 15. Be2 h4 16. Nd3 h3 17. g4 c4 18. Nf2 Nc5 19. Bxc4 Qb4 20. Be2 Bd7 21. 0-0 Rac8 22. Re1 Nh7 23. Nd3 Nxd3 24. Bxd3 Rc7 25. Nd1 Qxd2 26. Bxd2 Nf6 27. Nc3 Bc8 28. Bf4 Rxc3 29. bxc3 Nxd5 30. Bd2 Ne7 31. Bc4 Nc6 32. Bf4 Ne5 33. Bxe5 Bxe5 34. Rb3 Bf4 35. Bd5 Re7 36. Kf2 Rc7 37. Ke2 Kg7 38. Kd3 g5 39. Re2 Be5 40. Rc2 Kf6 41. Rb4 b5 1/2-1/2

[Event "Dieren op"]
[Site "Dieren"]
[Date "2005.07.27"]
[Round "2"]
[White "Odendahl, Reiner"]
[Black "Van Roosmalen, Sjoerd"]
[Result "1-0"]
[ECO "A07"]
[WhiteElo "2376"]
[BlackElo "2089"]
[PlyCount "73"]
[EventDate "2005.07.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 107 Extra"]
[Source "ChessBase"]
[SourceDate "2005.09.01"]
[SourceVersion "1"]
[SourceVersionDate "2005.09.01"]
[SourceQuality "1"]

1. Nf3 d5 2. g3 Nf6 3. Bg2 c6 4. b3 Bf5 5. Bb2 Nbd7 6. 0-0 Qc7 7. d3 e5 8. Nbd2 Bd6 9. e4 dxe4 10. dxe4 Be6 11. Qe2 b5 12. h3 h6 13. a4 0-0 14. Nh4 a6 15. Nf5 Bc5 16. Rfd1 Rfe8 17. Qf3 Nb6 18. Nxh6+ Kh7 19. Nf5 bxa4 20. bxa4 Rad8 21. a5 Rxd2 22. Rxd2 Nc4 23. Bc3 Nxd2 24. Bxd2 Qd7 25. Be3 Bxe3 26. fxe3 Qd2 27. Rf1 Qxc2 28. Nxg7 Kxg7 29. Qxf6+ Kf8 30. Qxe5 Ke7 31. Qc7+ Kf8 32. Qe5 Qc4 33. Qh8+ Ke7 34. Qf6+ Kf8 35. Rf4 Qc1+ 36. Kh2 Qxe3 37. Rh4 1-0

[Event "Dieren op"]
[Site "Dieren"]
[Date "2005.07.26"]
[Round "1"]
[White "Van Roosmalen, Sjoerd"]
[Black "Heemskerk, Wim"]
[Result "1-0"]
[ECO "A42"]
[WhiteElo "2089"]
[BlackElo "2252"]
[PlyCount "49"]
[EventDate "2005.07.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 107 Extra"]
[Source "ChessBase"]
[SourceDate "2005.09.01"]
[SourceVersion "1"]
[SourceVersionDate "2005.09.01"]
[SourceQuality "1"]

1. d4 d6 2. c4 g6 3. Nc3 Bg7 4. e4 e5 5. d5 f5 6. exf5 gxf5 7. Qh5+ Kf8 8. Nh3 Qf6 9. f3 Qg6 10. Qh4 Bf6 11. Qf2 Na6 12. Bd3 Qh5 13. Qe2 Ne7 14. Bd2 Rg8 15. 0-0-0 Bd7 16. Rdg1 c6 17. Nf2 Nc5 18. Bc2 cxd5 19. cxd5 a5 20. g4 Qh4 21. gxf5 Rxg1+ 22. Rxg1 Bxf5 23. Nfe4 Bg7 24. Rxg7 Bxe4 25. Rg4 1-0

[Event "Helmond op"]
[Site "Helmond"]
[Date "1999.06.12"]
[Round "2"]
[White "Van Roosmalen, Sjoerd"]
[Black "Dekker, Bart"]
[Result "0-1"]
[ECO "A65"]
[BlackElo "2230"]
[PlyCount "64"]
[EventDate "1999.06.11"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 0-0 6. Bg5 c5 7. d5 e6 8. Qd2 exd5 9. cxd5 a6 10. a4 Re8 11. Nge2 Nbd7 12. Ng3 Qc7 13. Be2 Rb8 14. 0-0 c4 15. a5 b5 16. axb6 Nxb6 17. Bd1 Nbd7 18. Nge2 Nc5 19. Nd4 Bb7 20. Be3 Nfd7 21. Bc2 Ne5 22. Na4 Rec8 23. Nxc5 Qxc5 24. Nc6 c3 25. Bxc5 cxd2 26. Ne7+ Kh8 27. Nxc8 Rxc8 28. f4 Nd7 29. Bxd6 Bd4+ 30. Kh1 Rxc2 31. Ba3 f5 32. exf5 Bxd5 0-1

[Event "VCN SchaakFestival"]
[Site "Soest"]
[Date "1999.05.16"]
[Round "7"]
[White "Loeber, Roderick"]
[Black "Van Roosmalen, Sjoerd"]
[Result "0-1"]
[ECO "A43"]
[WhiteElo "1902"]
[BlackElo "1951"]
[PlyCount "26"]
[EventDate "1999.05.14"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 c5 3. d5 d6 4. Bg5 Nbd7 5. Nc3 g6 6. e4 Bg7 7. Qd2 h6 8. Bf4 Qb6 9. Bd3 Ng4 10. Rb1 c4 11. h3 Nxf2 12. Be3 Nxd3+ 13. cxd3 Bxc3 0-1

[Event "VCN SchaakFestival"]
[Site "Soest"]
[Date "1999.05.16"]
[Round "6"]
[White "Van Roosmalen, Sjoerd"]
[Black "Wu, Sai Wing"]
[Result "1-0"]
[ECO "E49"]
[WhiteElo "1951"]
[BlackElo "1803"]
[PlyCount "89"]
[EventDate "1999.05.14"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. d4 e6 2. c4 Nf6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 d5 6. f3 b6 7. cxd5 exd5 8. e3 0-0 9. Bd3 c5 10. Ne2 Bb7 11. 0-0 Re8 12. Ng3 h5 13. Ra2 Nbd7 14. Re2 Nf8 15. Bd2 Bc6 16. Qb1 Qd7 17. Nf5 Rad8 18. e4 dxe4 19. fxe4 cxd4 20. cxd4 Ng6 21. e5 Nxe5 22. Rxe5 Rxe5 23. dxe5 Qxd3 24. Qxd3 Rxd3 25. exf6 Bxg2 26. Ne7+ Kh7 27. fxg7 Kxg7 28. Kxg2 Rxd2+ 29. Kg1 Ra2 30. Rf3 a5 31. Nc8 Rb2 32. Nd6 f6 33. Ne8+ Kg6 34. Nxf6 b5 35. Ne4 b4 36. axb4 axb4 37. Rf6+ Kg7 38. Rb6 b3 39. Nc3 Kh7 40. h4 Rd2 41. Ne4 Re2 42. Ng5+ Kg7 43. Rxb3 Re1+ 44. Kg2 Re2+ 45. Kg3 1-0

[Event "VCN SchaakFestival"]
[Site "Soest"]
[Date "1999.05.15"]
[Round "5"]
[White "Kohler, Aran"]
[Black "Van Roosmalen, Sjoerd"]
[Result "1-0"]
[ECO "D03"]
[WhiteElo "2271"]
[BlackElo "1951"]
[PlyCount "55"]
[EventDate "1999.05.14"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 e6 3. c3 Nf6 4. Bg5 Be7 5. e3 Nbd7 6. Nbd2 c5 7. Bd3 0-0 8. 0-0 b6 9. Re1 Bb7 10. Qb1 Rc8 11. h3 Re8 12. Ne5 h6 13. Bf4 Nxe5 14. dxe5 Nd7 15. Qd1 f5 16. Qh5 c4 17. Bc2 Nc5 18. g4 Ne4 19. gxf5 Nxd2 20. Rad1 d4 21. Rxd2 d3 22. f6 Bxf6 23. exf6 Qxf6 24. Be5 Qf5 25. Bd1 g5 26. f4 Qe4 27. Kh2 Re7 28. Qxh6 1-0

[Event "VCN SchaakFestival"]
[Site "Soest"]
[Date "1999.05.15"]
[Round "4"]
[White "Van Roosmalen, Sjoerd"]
[Black "Hopster, Ruud"]
[Result "1-0"]
[ECO "D63"]
[WhiteElo "1951"]
[BlackElo "1588"]
[PlyCount "77"]
[EventDate "1999.05.14"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Nf3 Bb4 5. Bg5 Nbd7 6. e3 0-0 7. a3 Be7 8. Rc1 c6 9. Bd3 dxc4 10. Bxc4 Nd5 11. Bxe7 Qxe7 12. 0-0 N7b6 13. Bd3 Nxc3 14. Rxc3 Nd5 15. Rc1 Bd7 16. Ne5 Rac8 17. Qa4 a6 18. Qb3 Rc7 19. Be4 f6 20. Nd3 Be8 21. Bf3 f5 22. Bxd5 exd5 23. Qb6 Rc8 24. Rc3 Qc7 25. Rb3 Qxb6 26. Rxb6 Rb8 27. Nc5 Rf7 28. Nxa6 Ra8 29. Nc5 Ra7 30. f4 Re7 31. Kf2 Bf7 32. Rc1 Be6 33. Rc3 Kf7 34. b4 Ke8 35. b5 Bd7 36. Nxb7 cxb5 37. Nd6+ Kf8 38. Rb8+ Be8 39. Rcc8 1-0

[Event "VCN SchaakFestival"]
[Site "Soest"]
[Date "1999.05.14"]
[Round "2"]
[White "Tabak, Stefan"]
[Black "Van Roosmalen, Sjoerd"]
[Result "1-0"]
[ECO "B25"]
[WhiteElo "2182"]
[BlackElo "1951"]
[PlyCount "73"]
[EventDate "1999.05.14"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 e6 6. Be3 d6 7. f4 Nge7 8. Nf3 b6 9. 0-0 0-0 10. Bf2 Bb7 11. Rb1 d5 12. e5 a6 13. Ne2 Qc7 14. c3 a5 15. Qd2 Ra7 16. Rbd1 Ba6 17. Rfe1 Raa8 18. g4 f6 19. exf6 Rxf6 20. Bh4 Rff8 21. d4 c4 22. Ng5 Bc8 23. Qe3 Nd8 24. Bg3 Qd7 25. f5 exf5 26. Nf4 Bf6 27. Nge6 Rf7 28. Nc7 Qxc7 29. Nxd5 Nxd5 30. Bxd5 Qa7 31. g5 Bb7 32. Qe8+ Kg7 33. gxf6+ Kxf6 34. Qe5+ Kg5 35. Qf4+ Kf6 36. Qh6 Bxd5 37. Bh4# 1-0

[Event "VCN SchaakFestival"]
[Site "Soest"]
[Date "1999.05.14"]
[Round "1"]
[White "Van Roosmalen, Sjoerd"]
[Black "Knipscheer, Poulien"]
[Result "1-0"]
[ECO "D08"]
[WhiteElo "1951"]
[BlackElo "1478"]
[PlyCount "71"]
[EventDate "1999.05.14"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. d4 d5 2. c4 e5 3. dxe5 d4 4. Nf3 Nc6 5. a3 a5 6. b3 Bc5 7. Bb2 Nge7 8. Nbd2 Bf5 9. g3 0-0 10. Bg2 Re8 11. 0-0 Ng6 12. Re1 Ngxe5 13. Nxe5 Rxe5 14. Nf3 Re8 15. Qd2 Qd6 16. Nh4 Be4 17. Bxe4 Rxe4 18. Qd3 Rae8 19. Nf3 Qe7 20. Kf1 Qf6 21. Rad1 g5 22. Bc1 h6 23. Kg2 Qe6 24. Bxg5 Rxe2 25. Rxe2 Qxe2 26. Bxh6 Bxa3 27. Qf5 Qe4 28. Qg5+ Qg6 29. Qd2 Bb4 30. Qc1 Bc3 31. Bf4 Re7 32. Bg5 Re8 33. Qf4 Rc8 34. Bf6 Qc2 35. Qg4+ Qg6 36. Qxc8+ 1-0

[Event "Utrecht Keres Memorial op"]
[Site "Utrecht"]
[Date "1999.??.??"]
[Round "5"]
[White "Mannen, Henk"]
[Black "Van Roosmalen, Sjoerd"]
[Result "1-0"]
[ECO "A39"]
[WhiteElo "2183"]
[PlyCount "105"]
[EventDate "1999.??.??"]
[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 c5 3. Bg2 g6 4. 0-0 Bg7 5. c4 0-0 6. Nc3 Nc6 7. d4 cxd4 8. Nxd4 a6 9. Bg5 Nxd4 10. Qxd4 d6 11. Qd3 Rb8 12. Rfd1 b6 13. e4 h6 14. Bf4 Nd7 15. Qd2 Kh7 16. h3 Ne5 17. b3 Bd7 18. Rac1 Qc8 19. Kh2 Bc6 20. Nd5 Qb7 21. Be3 Rfe8 22. Bd4 Nd7 23. Bxg7 Kxg7 24. Qd4+ Kh7 25. Nb4 Ne5 26. f4 a5 27. Nxc6 Nxc6 28. Qd5 Nd8 29. Qb5 Ne6 30. e5 Qc7 31. exd6 exd6 32. Qd5 Rbd8 33. f5 Ng7 34. fxg6+ fxg6 35. Re1 Re5 36. Qd3 Nf5 37. Bd5 Rde8 38. Re4 Qc5 39. Rf1 h5 40. g4 hxg4 41. hxg4 Rxe4 42. Bxe4 Kg7 43. Bxf5 gxf5 44. Rxf5 Rh8+ 45. Kg2 Qc6+ 46. Qd5 Qxd5+ 47. Rxd5 Rh6 48. Kg3 Kf7 49. Kf4 Rh2 50. Rxd6 Rf2+ 51. Kg5 Rxa2 52. Rxb6 Rb2 53. Rb7+ 1-0

[Event "Utrecht Keres Memorial op"]
[Site "Utrecht"]
[Date "1999.??.??"]
[Round "3"]
[White "Smits, Mark"]
[Black "Van Roosmalen, Sjoerd"]
[Result "1-0"]
[ECO "B98"]
[PlyCount "57"]
[EventDate "1999.??.??"]
[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 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 Qa5 9. 0-0-0 Bd7 10. Be2 Nc6 11. Qg3 Rc8 12. Kb1 b5 13. Bf3 b4 14. Nce2 Qc7 15. Rhe1 h6 16. Bh4 Rg8 17. Nxc6 Bxc6 18. Nd4 g5 19. fxg5 hxg5 20. Bxg5 Nxe4 21. Bxe4 Bxe4 22. Rxe4 Rxg5 23. Qf2 e5 24. h4 Rh5 25. g4 Rxh4 26. Nf5 Rh7 27. Ne3 Qb6 28. Qf5 Rc3 29. Nd5 1-0

[Event "Utrecht Keres Memorial op"]
[Site "Utrecht"]
[Date "1999.??.??"]
[Round "1"]
[White "Van Roosmalen, Sjoerd"]
[Black "Berkvens, Joost"]
[Result "0-1"]
[ECO "A85"]
[BlackElo "2268"]
[PlyCount "102"]
[EventDate "1999.??.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 f5 2. c4 Nf6 3. Nc3 d6 4. Nf3 g6 5. b3 Bg7 6. Bb2 0-0 7. e3 Qe8 8. Qc2 Na6 9. Nd5 Ne4 10. c5 c6 11. Bxa6 cxd5 12. Be2 dxc5 13. dxc5 e5 14. 0-0 g5 15. Rad1 g4 16. Ne1 Be6 17. Nd3 Bf7 18. Qb1 Qe7 19. Qa1 Rae8 20. b4 a5 21. b5 Nxc5 22. Nxc5 Qxc5 23. Rc1 Qd6 24. a4 Rd8 25. Rfd1 Rc8 26. Bc4 Rfd8 27. Bb3 Rxc1 28. Qxc1 Qb4 29. Rd3 Qe7 30. Rc3 e4 31. Rc2 Bxb2 32. Qxb2 Qb4 33. Rc1 d4 34. Bxf7+ Kxf7 35. Qa2+ Kf6 36. exd4 Qxd4 37. Qc2 h5 38. Rf1 h4 39. Qc7 Rd7 40. Qf4 Kg6 41. Qb8 Kg7 42. Qf4 Qf6 43. Rc1 Qh6 44. Qe5+ Qf6 45. Qf4 Kg6 46. Qb8 h3 47. Qg8+ Kh6 48. Qc8 Rd2 49. Qxb7 e3 50. gxh3 e2 51. Qb8 Rd1+ 0-1

[Event "Utrecht Keres Memorial op"]
[Site "Utrecht"]
[Date "1999.??.??"]
[Round "6"]
[White "Van Roosmalen, Sjoerd"]
[Black "Westerman, Hendrik W"]
[Result "1-0"]
[ECO "A81"]
[PlyCount "106"]
[EventDate "1999.??.??"]
[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 e6 2. g3 f5 3. Bg2 Nf6 4. Nh3 Be7 5. 0-0 0-0 6. Nd2 Nc6 7. c3 d6 8. b4 Qe8 9. Qb3 Kh8 10. f4 d5 11. Nf2 Bd7 12. Nd3 Ne4 13. Nf3 Qh5 14. c4 Bf6 15. e3 Ne7 16. Nfe5 Qe8 17. a4 c6 18. Ra2 Rg8 19. Ba3 g5 20. Rb2 Ng6 21. Nxg6+ Rxg6 22. Ne5 Bxe5 23. fxe5 Qg8 24. b5 Qg7 25. Bxe4 dxe4 26. Qc2 Rc8 27. Qd2 Kg8 28. Qa5 Ra8 29. Qc7 Be8 30. Qd6 h5 31. Rg2 Kh7 32. h3 Rc8 33. Qc5 b6 34. Qb4 Rc7 35. Kh2 Rf7 36. Rfg1 c5 37. dxc5 Qxe5 38. Kh1 Qxc5 39. Qc3 Qc7 40. Bb2 Rf8 41. Qd4 Qd7 42. Qxd7+ Bxd7 43. Rd2 Bc8 44. Be5 Rf7 45. Rd8 Rgg7 46. Rgd1 Rf8 47. R8d6 Kg6 48. Kh2 Re8 49. a5 bxa5 50. c5 Rge7 51. c6 Rf8 52. Rd8 Ree8 53. c7 Kf7 1-0

[Event "Utrecht Keres Memorial op"]
[Site "Utrecht"]
[Date "1999.??.??"]
[Round "4"]
[White "Van Roosmalen, Sjoerd"]
[Black "Winkel, Ruud"]
[Result "1-0"]
[ECO "D06"]
[PlyCount "79"]
[EventDate "1999.??.??"]
[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 Bf5 3. Nf3 e6 4. Qb3 Nc6 5. cxd5 exd5 6. a3 Rb8 7. Nc3 Be4 8. Nxe4 dxe4 9. Ng5 Nh6 10. d5 Ne7 11. Nxe4 Qxd5 12. Qf3 Nhf5 13. e3 Rd8 14. g3 Nd6 15. Nxd6+ Rxd6 16. Qxd5 Rxd5 17. Bg2 Rb5 18. 0-0 g6 19. b4 Bg7 20. Ra2 0-0 21. Rc2 c6 22. Rd1 a5 23. Rd7 Bf6 24. Bf1 Rb6 25. bxa5 Rb1 26. e4 Re8 27. Bd2 Kg7 28. f4 Nc8 29. e5 Be7 30. Bc3 Kf8 31. Rb2 Rc1 32. Bd2 Rd1 33. Rbxb7 Bc5+ 34. Kg2 Ne7 35. a6 Nd5 36. Rxf7+ Kg8 37. Rg7+ Kh8 38. Rxh7+ Kg8 39. Rhg7+ Kf8 40. Rbf7# 1-0

[Event "Utrecht op"]
[Site "Utrecht"]
[Date "1998.06.05"]
[Round "?"]
[White "Royakkers, Guido"]
[Black "Van Roosmalen, Sjoerd"]
[Result "1-0"]
[ECO "B23"]
[WhiteElo "2160"]
[BlackElo "1935"]
[PlyCount "63"]
[EventDate "1998.05.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 d6 3. f4 Nc6 4. Nf3 g6 5. Bc4 Bg7 6. d3 e6 7. 0-0 Nge7 8. a3 a6 9. Ne2 0-0 10. c3 d5 11. Ba2 dxe4 12. dxe4 Qc7 13. Ng3 b5 14. Be3 Na5 15. Qe2 Bd7 16. Qf2 Nb7 17. Nh4 Bf6 18. Nf3 Bg7 19. f5 exf5 20. exf5 Nxf5 21. Nxf5 Bxf5 22. Bd5 Bd3 23. Ng5 Bc4 24. Bxc4 bxc4 25. Qh4 h6 26. Ne4 Qe5 27. Rae1 g5 28. Bxg5 hxg5 29. Nxg5 Rfd8 30. Qh7+ Kf8 31. Rxf7+ Ke8 32. Qg8+ 1-0

[Event "Utrecht op"]
[Site "Utrecht"]
[Date "1998.06.05"]
[Round "?"]
[White "Van Roosmalen, Sjoerd"]
[Black "Helvensteijn, Dennis"]
[Result "1/2-1/2"]
[ECO "D02"]
[WhiteElo "1935"]
[BlackElo "2200"]
[PlyCount "47"]
[EventDate "1998.05.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nc6 3. Bf4 Bg4 4. e3 e6 5. Be2 Bd6 6. Bxd6 Qxd6 7. 0-0 Nf6 8. Nbd2 0-0 9. c4 Rfe8 10. Rc1 Rad8 11. c5 Qe7 12. Qb3 Rb8 13. Bb5 Rec8 14. Bxc6 bxc6 15. Qc3 Nd7 16. Rfe1 f5 17. Ne5 Nxe5 18. dxe5 Bh5 19. Nb3 Be8 20. Nd4 Bd7 21. f4 Rf8 22. b3 Qd8 23. Qa5 Qc8 24. a3 1/2-1/2

[Event "NED-ch U20"]
[Site "Hengelo"]
[Date "1997.??.??"]
[Round "2"]
[White "Gustafsson, Jan"]
[Black "Van Roosmalen, Sjoerd"]
[Result "1-0"]
[ECO "A53"]
[WhiteElo "2375"]
[PlyCount "83"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 d6 3. Nf3 Bg4 4. e3 Nbd7 5. h3 Bxf3 6. Qxf3 c6 7. Nc3 e5 8. Bd2 g6 9. 0-0-0 Bg7 10. g4 h6 11. h4 Qe7 12. Bd3 0-0-0 13. h5 g5 14. Bf5 Kb8 15. Qg3 Ne8 16. Rhe1 Nc7 17. f4 f6 18. Kb1 Bf8 19. Bc1 Rg8 20. b3 Qe8 21. Ne4 Qf7 22. fxe5 dxe5 23. Rf1 Be7 24. Bb2 Qg7 25. Bxd7 Rxd7 26. dxe5 Rxd1+ 27. Rxd1 Qh7 28. Qf3 fxe5 29. Bxe5 Bc5 30. Kb2 Qe7 31. Qf6 Ba3+ 32. Kc2 Qe8 33. c5 Ka8 34. Nd6 Qd7 35. Qf5 Qe7 36. Qf7 Qd8 37. Nxb7 Qc8 38. Bxc7 Rf8 39. Qxf8 Qxf8 40. Rd8+ Qxd8 41. Nxd8 Bxc5 42. e4 1-0

[Event "NED-ch U20"]
[Site "Hengelo"]
[Date "1997.??.??"]
[Round "8"]
[White "Molenaar, Joseph"]
[Black "Van Roosmalen, Sjoerd"]
[Result "0-1"]
[ECO "A53"]
[PlyCount "48"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 d6 3. d4 e5 4. dxe5 dxe5 5. Qxd8+ Kxd8 6. a3 c6 7. Bg5 Nbd7 8. e3 Kc7 9. Nf3 Ne8 10. h3 f6 11. Bh4 Nd6 12. Bg3 a5 13. Be2 Nc5 14. 0-0 Bf5 15. Nh4 Be6 16. f4 Nde4 17. Nxe4 Nxe4 18. Bh2 Bc5 19. Rf3 Nd2 20. Rg3 Rhg8 21. fxe5 f5 22. Rd1 f4 23. Rg5 Bxe3+ 24. Kh1 Ne4 0-1

[Event "NED-ch U20"]
[Site "Hengelo"]
[Date "1997.??.??"]
[Round "4"]
[White "Smits, Mark"]
[Black "Van Roosmalen, Sjoerd"]
[Result "0-1"]
[ECO "B23"]
[PlyCount "66"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. f4 d6 4. Nf3 g6 5. Bb5 Bd7 6. Bxc6 Bxc6 7. 0-0 Bg7 8. d3 Nf6 9. Qe1 b5 10. Qh4 b4 11. Ne2 d5 12. e5 Nd7 13. d4 e6 14. Qf2 c4 15. g4 h5 16. h3 Qb6 17. Be3 hxg4 18. hxg4 a5 19. Ng5 Bh6 20. f5 gxf5 21. Kg2 0-0-0 22. Ng3 Bxg5 23. Bxg5 Rdg8 24. Qf4 Rg7 25. Rh1 Rhg8 26. Rh5 Nf8 27. gxf5 exf5 28. Qxf5+ Ne6 29. Rah1 Bd7 30. Qf6 Qxd4 31. R1h4 Qxb2 32. Rg4 Qxc2+ 33. Kh3 Nxg5+ 0-1

[Event "NED-ch U20"]
[Site "Hengelo"]
[Date "1997.??.??"]
[Round "3"]
[White "Van Roosmalen, Sjoerd"]
[Black "Rijsterborgh, R."]
[Result "1-0"]
[ECO "D93"]
[PlyCount "85"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. Qb3 c6 6. Bf4 0-0 7. e3 Nbd7 8. cxd5 cxd5 9. Nxd5 Nxd5 10. Qxd5 Nb6 11. Qxd8 Rxd8 12. Bc7 Rd7 13. Bxb6 axb6 14. Bc4 Rc7 15. Bb3 Bf5 16. 0-0 Rac8 17. Nd2 Bc2 18. Rac1 e5 19. d5 Bd3 20. Rxc7 Rxc7 21. Rd1 e4 22. f3 Bxb2 23. Nxe4 Rc1 24. Nd6 Rxd1+ 25. Bxd1 Be5 26. Nxb7 Bc7 27. d6 Ba6 28. dxc7 Bxb7 29. f4 Bc8 30. e4 Kf8 31. e5 Ke7 32. Kf2 Kd7 33. Bg4+ Kxc7 34. Bxc8 Kxc8 35. Ke3 Kd7 36. Kd4 Kc6 37. g4 h5 38. gxh5 gxh5 39. f5 h4 40. h3 Kd7 41. Kd5 Kc7 42. e6 f6 43. Ke4 1-0

[Event "NED-ch U20"]
[Site "Hengelo"]
[Date "1997.??.??"]
[Round "1"]
[White "Van Roosmalen, Sjoerd"]
[Black "Van der Kuyl, Alexander"]
[Result "1-0"]
[ECO "D07"]
[PlyCount "91"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. d4 d5 2. c4 Nc6 3. Nf3 Bg4 4. Nc3 e6 5. cxd5 exd5 6. Bf4 Bb4 7. e3 Nf6 8. Bd3 0-0 9. 0-0 Qd7 10. h3 Bh5 11. Nb5 a6 12. Nxc7 Rac8 13. Nxa6 bxa6 14. Bxa6 Ra8 15. Bb5 Bd6 16. Qc1 Rfc8 17. Ne5 Bxe5 18. dxe5 Ne4 19. f3 Qb7 20. Bxc6 Rxc6 21. Qd1 Nc5 22. Qxd5 Na4 23. e6 Bg6 24. e7 Re8 25. Rac1 Rb6 26. Qd8 f6 27. Rc7 Qa6 28. b3 Nb2 29. h4 Qxa2 30. h5 Bf7 31. h6 Qxb3 32. Rc8 Qb5 33. Rb1 Qf5 34. Rbc1 Nd3 35. Qxb6 Nxc1 36. Rxc1 Rxe7 37. Qd6 Qe6 38. hxg7 Qxd6 39. Bxd6 Rxe3 40. Bf4 Re7 41. Bh6 Be8 42. g4 Bd7 43. Rd1 Kf7 44. Rd6 Be6 45. f4 Kg6 46. Rxe6 1-0

[Event "NED-ch U20"]
[Site "Hengelo"]
[Date "1997.??.??"]
[Round "9"]
[White "Van Roosmalen, Sjoerd"]
[Black "Verwiel, Eugene"]
[Result "0-1"]
[ECO "D93"]
[PlyCount "88"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. Qb3 c6 6. Bf4 0-0 7. e3 b6 8. Rc1 e6 9. Be2 Bb7 10. 0-0 Nbd7 11. Rfd1 Qe7 12. h3 Kh8 13. c5 Rfc8 14. a4 Ne8 15. Ra1 e5 16. Bg3 Rcb8 17. cxb6 axb6 18. dxe5 Nxe5 19. Nxe5 Bxe5 20. Bxe5+ Qxe5 21. Qxb6 Kg8 22. a5 Nc7 23. Bf3 Ne6 24. e4 d4 25. Ne2 c5 26. Ng3 Nf4 27. Rac1 Ne6 28. b3 Bxe4 29. Bxe4 Rxb6 30. axb6 Rb8 31. b4 Rxb6 32. bxc5 Nxc5 33. Bf3 Rb2 34. Re1 Qg5 35. h4 Qd2 36. Re8+ Kg7 37. Rxc5 Qxf2+ 38. Kh2 Qxf3 39. Nh5+ gxh5 40. Rg5+ Kf6 41. Rd8 Qf4+ 42. Rg3 Qxh4+ 43. Rh3 Qf4+ 44. Rg3 h4 0-1

[Event "NED-ch U20"]
[Site "Hengelo"]
[Date "1997.??.??"]
[Round "7"]
[White "Van Roosmalen, Sjoerd"]
[Black "Werle, Jan"]
[Result "0-1"]
[ECO "E81"]
[PlyCount "48"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d6 4. e4 Bg7 5. f3 0-0 6. Bg5 Nbd7 7. Qd2 e5 8. d5 Qe8 9. Nb5 Qd8 10. b4 a6 11. Na3 a5 12. bxa5 b6 13. Nb5 Rxa5 14. Ne2 Nc5 15. Nec3 Nb3 16. Qd1 Nxa1 17. Qxa1 Bd7 18. Bd3 Qc8 19. 0-0 Nh5 20. Rc1 Nf4 21. Bf1 h6 22. Be7 Re8 23. Bxd6 cxd6 24. Kh1 Qb8 0-1

[Event "NED-ch U20"]
[Site "Hengelo"]
[Date "1997.??.??"]
[Round "5"]
[White "Van Roosmalen, Sjoerd"]
[Black "Wunnink, Michael"]
[Result "0-1"]
[ECO "A67"]
[BlackElo "2045"]
[PlyCount "68"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. e4 g6 7. f4 Bg7 8. Bb5+ Nfd7 9. a4 0-0 10. Nf3 Na6 11. 0-0 Nc7 12. Qc2 Rb8 13. Rb1 a6 14. Be2 Re8 15. Re1 Nf6 16. Bd2 Bg4 17. b4 cxb4 18. Rxb4 Nd7 19. Reb1 Nc5 20. h3 Bd7 21. Kh1 a5 22. Rc4 N7a6 23. Nb5 Nxe4 24. Be1 Bf5 25. Bd3 Nac5 26. Bh4 Bf6 27. Bxf6 Qxf6 28. Ne1 Nxd3 29. Nxd3 Rbc8 30. Rd1 Nc5 31. Rc3 Nxd3 32. Rdxd3 Bxd3 33. Qxd3 Rxc3 34. Nxc3 Re1+ 0-1

[Event "NED-ch U20"]
[Site "Hengelo"]
[Date "1997.??.??"]
[Round "6"]
[White "Van der Meijden, Martien"]
[Black "Van Roosmalen, Sjoerd"]
[Result "0-1"]
[ECO "A55"]
[PlyCount "68"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 d6 3. Nc3 e5 4. Nf3 Nbd7 5. e4 Be7 6. Be2 0-0 7. 0-0 c6 8. Qc2 Qc7 9. b3 a6 10. Bb2 Re8 11. Rac1 b6 12. d5 c5 13. Nd2 Bf8 14. f4 exf4 15. Rxf4 Ne5 16. h3 Rb8 17. Rcf1 Nfd7 18. Nd1 g6 19. Qc3 Bh6 20. R4f2 Rf8 21. Nf3 Qd8 22. Ne3 Bg7 23. Kh1 Nf6 24. Qc2 Nh5 25. Kh2 Nf4 26. Bxe5 dxe5 27. Rd1 Qd6 28. g4 Bd7 29. Rg1 Rbd8 30. Ng2 Rfe8 31. Ne3 Kh8 32. Bd3 f6 33. Rg3 Bh6 34. Rg1 Nxh3 0-1

[Event "Hengelo U20 op"]
[Site "Hengelo"]
[Date "1996.??.??"]
[Round "7"]
[White "Do, Luat"]
[Black "Van Roosmalen, Sjoerd"]
[Result "1-0"]
[ECO "B92"]
[PlyCount "55"]
[EventDate "1996.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e5 7. Nb3 Be7 8. Be3 Be6 9. 0-0 0-0 10. f4 exf4 11. Bxf4 Nc6 12. Kh1 Re8 13. Nd4 Nxd4 14. Qxd4 Qc7 15. e5 dxe5 16. Bxe5 Qa5 17. Qf4 Rac8 18. Bd3 Qb6 19. Qh4 h6 20. Bxf6 Bxf6 21. Rxf6 gxf6 22. Ne4 Qxb2 23. Nxf6+ Kg7 24. Rf1 Qe5 25. Rf3 Qa1+ 26. Bf1 Red8 27. Rg3+ Kf8 28. Qb4+ 1-0

[Event "Haarlem AKN op 05th"]
[Site "Haarlem"]
[Date "1996.??.??"]
[Round "3"]
[White "Galje, Hans"]
[Black "Van Roosmalen, Sjoerd"]
[Result "0-1"]
[ECO "B93"]
[WhiteElo "2065"]
[PlyCount "116"]
[EventDate "1996.07.??"]
[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 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. f4 e5 7. Nf3 Nc6 8. Bd3 Be7 9. 0-0 exf4 10. Kh1 Bg4 11. Bxf4 Ne5 12. Qe1 Qc7 13. Nxe5 dxe5 14. Bg5 Be6 15. a4 Rd8 16. Rd1 Ng4 17. Bxe7 Qxe7 18. Nd5 Bxd5 19. exd5 0-0 20. c4 g6 21. h3 Nh6 22. Qe3 Kg7 23. Bc2 f5 24. Rfe1 Rfe8 25. c5 Qh4 26. Kg1 Nf7 27. d6 Ng5 28. Bb3 Ne4 29. Bd5 Nxd6 30. cxd6 Rxd6 31. Bxb7 Rxd1 32. Rxd1 Qxa4 33. Qd3 Kh6 34. Qd7 Qb3 35. Bf3 Rb8 36. Qd2+ f4 37. Rb1 Rc8 38. Be4 a5 39. Qd3 Qb4 40. Kh1 a4 41. h4 Qe7 42. Qh3 Rc4 43. Bd3 Rd4 44. Kg1 Qc5 45. Kf1 f3 46. Rd1 fxg2+ 47. Kxg2 Qd5+ 48. Qf3 Rg4+ 49. Kf2 Rf4 50. Qxf4+ exf4 51. Be2 Qc5+ 52. Kf1 Qe3 53. Rd3 Qe5 54. Kf2 Qxb2 55. h5 a3 56. hxg6 hxg6 57. Rh3+ Kg7 58. Rd3 a2 0-1

[Event "Hengelo U20 op"]
[Site "Hengelo"]
[Date "1996.??.??"]
[Round "9"]
[White "Kerstens, Dennis"]
[Black "Van Roosmalen, Sjoerd"]
[Result "1/2-1/2"]
[ECO "B86"]
[PlyCount "90"]
[EventDate "1996.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bc4 e6 7. Bb3 Be7 8. f4 Qc7 9. f5 e5 10. Nde2 Nbd7 11. Ng3 0-0 12. 0-0 b5 13. Bg5 Bb7 14. a3 h6 15. Bxf6 Nxf6 16. Nh5 Rac8 17. Nxf6+ Bxf6 18. Qg4 Qc5+ 19. Kh1 Qe3 20. Bd5 Bxd5 21. Nxd5 Qg5 22. Qe2 h5 23. a4 Rc5 24. c3 Rb8 25. b4 Rc4 26. axb5 axb5 27. Ra5 Qg4 28. Qxg4 hxg4 29. Re1 Bg5 30. Re2 Rc6 31. Kg1 Kf8 32. Kf2 Bh4+ 33. Ke3 Bg5+ 34. Kd3 Bd8 35. Ra1 Ke8 36. Rea2 Kf8 37. Ra7 Ke8 38. g3 Bb6 39. Re7+ Kf8 40. Rd7 Ke8 41. Nxb6 Rbxb6 42. Raa7 Ra6 43. Re7+ Kd8 44. Rad7+ Kc8 45. Rxf7 Ra3 1/2-1/2

[Event "Hengelo U20 op"]
[Site "Hengelo"]
[Date "1996.??.??"]
[Round "2"]
[White "Peeters, Guido"]
[Black "Van Roosmalen, Sjoerd"]
[Result "0-1"]
[ECO "B90"]
[PlyCount "42"]
[EventDate "1996.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. a4 b6 7. Be3 Bb7 8. f3 e6 9. Bc4 Qc7 10. Bb3 Be7 11. 0-0 0-0 12. Bxe6 fxe6 13. Nxe6 Qc6 14. Nxf8 Bxf8 15. Qd4 Nbd7 16. Rfd1 Re8 17. Bf4 Ne5 18. Nd5 Nh5 19. Bxe5 dxe5 20. Qc3 Bc5+ 21. Kh1 Ng3+ 0-1

[Event "Haarlem AKN op 05th"]
[Site "Haarlem"]
[Date "1996.??.??"]
[Round "1"]
[White "Perez Garcia, Hebert"]
[Black "Van Roosmalen, Sjoerd"]
[Result "1-0"]
[ECO "B25"]
[WhiteElo "2200"]
[PlyCount "33"]
[EventDate "1996.07.??"]
[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 c5 2. Nc3 d6 3. g3 Nc6 4. Bg2 Nf6 5. d3 g6 6. Nge2 Bg7 7. 0-0 Qc7 8. h3 Bd7 9. Be3 h5 10. d4 cxd4 11. Nxd4 e5 12. Ndb5 Qb8 13. Nxd6+ Kf8 14. f4 Ne8 15. Nxf7 Kxf7 16. Qxd7+ Kg8 17. Qe6+ 1-0

[Event "Haarlem AKN op 05th"]
[Site "Haarlem"]
[Date "1996.??.??"]
[Round "5"]
[White "Stuifbergen, Jan"]
[Black "Van Roosmalen, Sjoerd"]
[Result "1-0"]
[ECO "A36"]
[PlyCount "59"]
[EventDate "1996.07.??"]
[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 c5 2. Ne2 Nc6 3. c4 g6 4. g3 Bg7 5. Bg2 e6 6. 0-0 Nge7 7. Nbc3 0-0 8. d3 Nd4 9. Nxd4 cxd4 10. Ne2 Nc6 11. Bf4 e5 12. Bd2 Qe7 13. a3 a6 14. b4 b5 15. Rc1 Bb7 16. f4 f6 17. Qb3 Kh8 18. Rf2 d6 19. g4 Rab8 20. Ng3 Ba8 21. Qd1 a5 22. bxa5 Qa7 23. f5 Nxa5 24. cxb5 Rxb5 25. fxg6 hxg6 26. g5 Qb8 27. gxf6 Rxf6 28. Rxf6 Bxf6 29. Bh3 Nb3 30. Rc8+ 1-0

[Event "Hengelo U20 op"]
[Site "Hengelo"]
[Date "1996.??.??"]
[Round "3"]
[White "Van Delft, Merijn"]
[Black "Van Roosmalen, Sjoerd"]
[Result "1-0"]
[ECO "B90"]
[WhiteElo "2185"]
[PlyCount "51"]
[EventDate "1996.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 Ng4 7. Bg5 h6 8. Bh4 g5 9. Bg3 Bg7 10. Be2 h5 11. h4 Nc6 12. Nb3 Be6 13. hxg5 Qb6 14. Qd2 Nce5 15. 0-0-0 Rc8 16. f3 Qe3 17. fxg4 Qxg3 18. Rh3 Qxh3 19. gxh3 hxg4 20. hxg4 Nxg4 21. Nd4 Bd7 22. Nf5 Bxf5 23. exf5 Nf2 24. f6 Bxf6 25. gxf6 Nxd1 26. Bxd1 1-0

[Event "Hengelo U20 op"]
[Site "Hengelo"]
[Date "1996.??.??"]
[Round "5"]
[White "Van Den Boomen, Ronny"]
[Black "Van Roosmalen, Sjoerd"]
[Result "0-1"]
[ECO "B22"]
[PlyCount "50"]
[EventDate "1996.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. d4 e6 5. Nf3 Nc6 6. a3 cxd4 7. cxd4 d6 8. Bc4 Nb6 9. Bb5 Bd7 10. Qe2 a6 11. Bxc6 Bxc6 12. 0-0 Bb5 13. Qe4 Bxf1 14. Kxf1 dxe5 15. dxe5 Qd1+ 16. Qe1 Rd8 17. Nc3 Qxe1+ 18. Kxe1 Nd5 19. Ne4 Be7 20. Bg5 f6 21. exf6 gxf6 22. Bh6 Kf7 23. h4 Rc8 24. Kd2 Rhd8 25. Nd4 Nb6 0-1

[Event "Hengelo U20 op"]
[Site "Hengelo"]
[Date "1996.??.??"]
[Round "6"]
[White "Van Roosmalen, Sjoerd"]
[Black "Bakker, Sven"]
[Result "0-1"]
[ECO "D31"]
[PlyCount "62"]
[EventDate "1996.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nf3 c6 4. Nc3 dxc4 5. a4 Bb4 6. e3 b5 7. Ne5 Nf6 8. Bd2 Bxc3 9. Bxc3 Qb6 10. Qc2 Nbd7 11. Nxd7 Bxd7 12. a5 Qc7 13. b4 Nd5 14. g3 0-0 15. Bg2 Rae8 16. Rd1 Bc8 17. 0-0 Bb7 18. Qd2 Nxc3 19. Qxc3 e5 20. d5 cxd5 21. Bxd5 Rd8 22. Bxb7 Qxb7 23. Qxe5 Rd7 24. Rd6 Rxd6 25. Qxd6 Rc8 26. Rc1 Qc6 27. Qd4 a6 28. Rc3 Qc7 29. Kf1 Rd8 30. Qe4 Qd6 31. h4 Qxb4 0-1

[Event "Haarlem AKN op 05th"]
[Site "Haarlem"]
[Date "1996.??.??"]
[Round "2"]
[White "Van Roosmalen, Sjoerd"]
[Black "Kaptein, Peter"]
[Result "1-0"]
[ECO "D53"]
[PlyCount "45"]
[EventDate "1996.07.??"]
[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 e6 3. Nf3 Nc6 4. Nc3 Nf6 5. Bg5 Be7 6. e3 0-0 7. Bd3 dxc4 8. Bxc4 Nd5 9. Bxe7 Ncxe7 10. 0-0 b6 11. Rc1 a6 12. a4 Bb7 13. Ne5 Nxc3 14. Rxc3 Nd5 15. Bxd5 Bxd5 16. Qc2 c5 17. Rd1 cxd4 18. Rxd4 Rc8 19. e4 Rxc3 20. Qxc3 Qc8 21. exd5 Qxc3 22. bxc3 exd5 23. Rxd5 1-0

[Event "Hengelo U20 op"]
[Site "Hengelo"]
[Date "1996.??.??"]
[Round "1"]
[White "Van Roosmalen, Sjoerd"]
[Black "Lytchak, Alexander"]
[Result "0-1"]
[ECO "D15"]
[BlackElo "2265"]
[PlyCount "66"]
[EventDate "1996.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. Nf3 a6 5. cxd5 cxd5 6. e3 Nc6 7. Bd3 Bg4 8. h3 Bh5 9. 0-0 e6 10. a3 Rc8 11. Bd2 Bd6 12. b4 0-0 13. Qe2 e5 14. dxe5 Nxe5 15. Bf5 Nxf3+ 16. gxf3 Bb8 17. Bg4 Bxg4 18. fxg4 Rxc3 19. Bxc3 Qc7 20. f3 Qxc3 21. Rfc1 Qe5 22. Re1 Re8 23. Rad1 Ba7 24. Rd3 d4 25. e4 Nd5 26. Qh2 Nf4 27. Rdd1 d3+ 28. Kh1 Bb8 29. h4 Qc3 30. Qd2 Qf6 31. Qh2 Ne2 32. Qh3 Ng3+ 33. Kg2 Qb2+ 0-1

[Event "Hengelo U20 op"]
[Site "Hengelo"]
[Date "1996.??.??"]
[Round "8"]
[White "Van Roosmalen, Sjoerd"]
[Black "Van Otten, Gerard J"]
[Result "1-0"]
[ECO "D53"]
[PlyCount "47"]
[EventDate "1996.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Nf3 Be7 5. Bg5 Nbd7 6. e3 b6 7. Rc1 Bb7 8. cxd5 exd5 9. Bd3 0-0 10. Qc2 c5 11. 0-0 Rc8 12. Qe2 Re8 13. Bf5 a6 14. Rfd1 c4 15. Ne5 Rc7 16. Bf4 Rc8 17. Qc2 Bc6 18. e4 g6 19. exd5 Nxd5 20. Bxd7 Nb4 21. Nxc6 Rxc6 22. Bxc6 Nxc2 23. Bxe8 Qxe8 24. Rxc2 1-0

[Event "Haarlem AKN op 05th"]
[Site "Haarlem"]
[Date "1996.??.??"]
[Round "4"]
[White "Van Roosmalen, Sjoerd"]
[Black "Van de Klashorst, Fred"]
[Result "0-1"]
[ECO "A32"]
[PlyCount "126"]
[EventDate "1996.07.??"]
[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 a6 3. Nc3 c5 4. Nf3 cxd4 5. Nxd4 e6 6. g3 Bb4 7. Bd2 Nc6 8. Nf3 Qb6 9. Bg2 Bxc3 10. Bxc3 Ne4 11. 0-0 Nxc3 12. bxc3 Qc5 13. Qd3 0-0 14. h4 h6 15. Nd2 Ne5 16. Qd4 Qc7 17. Rab1 d6 18. Qb6 Qe7 19. Rfd1 f5 20. e3 Rb8 21. Qa7 Qc7 22. Rb3 Rf7 23. Rdb1 Nd7 24. Qd4 b6 25. R3b2 Nc5 26. Nb3 e5 27. Qd2 Na4 28. Rc2 Be6 29. Bd5 Bxd5 30. Qxd5 Rc8 31. Rd1 Rd8 32. Kg2 Kf8 33. Kg1 f4 34. exf4 exf4 35. Nd4 Nc5 36. Re2 fxg3 37. fxg3 Qd7 38. Kg2 Re8 39. Rxe8+ Qxe8 40. Qxd6+ Kg8 41. Qd5 Qe4+ 42. Kh2 Qxd5 43. cxd5 Rf2+ 44. Kg1 Rxa2 45. Nc6 Rc2 46. d6 Rxc3 47. d7 Nxd7 48. Ne7+ Kf7 49. Rxd7 Ke6 50. Rb7 Rxg3+ 51. Kh2 Rc3 52. Rxb6+ Kxe7 53. Rxa6 Kf7 54. Rb6 Re3 55. Ra6 Re6 56. Ra5 Kf6 57. Kg3 Re5 58. Ra7 g6 59. Ra8 Re3+ 60. Kf4 Rh3 61. Kg4 Rb3 62. Rf8+ Kg7 63. Rf4 h5+ 0-1

[Event "Haarlem AKN op 05th"]
[Site "Haarlem"]
[Date "1996.??.??"]
[Round "6"]
[White "Van Roosmalen, Sjoerd"]
[Black "Velde, Jan"]
[Result "1-0"]
[ECO "E89"]
[PlyCount "65"]
[EventDate "1996.07.??"]
[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 0-0 6. Be3 Nbd7 7. Nge2 e5 8. Qd2 c6 9. d5 cxd5 10. cxd5 Ne8 11. Nb5 a6 12. Na7 f5 13. Nxc8 Rxc8 14. Nc3 f4 15. Bf2 b5 16. b4 Qc7 17. Rc1 Nb6 18. Bd3 Na4 19. Ne2 Qd7 20. Rxc8 Qxc8 21. 0-0 Qb7 22. Rc1 Rf7 23. Nc3 Nb6 24. Nd1 Rc7 25. Nb2 Nf6 26. Rxc7 Qxc7 27. Qc2 Qxc2 28. Bxc2 Nbd7 29. a4 bxa4 30. Bxa4 Nb8 31. Ba7 Nfd7 32. Nc4 Bf8 33. Nb6 1-0

[Event "Hengelo U20 op"]
[Site "Hengelo"]
[Date "1996.??.??"]
[Round "4"]
[White "Van Roosmalen, Sjoerd"]
[Black "Vermaat, Ruben"]
[Result "1-0"]
[ECO "D53"]
[PlyCount "45"]
[EventDate "1996.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. Nc3 Nc6 5. Bg5 dxc4 6. e3 Be7 7. Bxc4 Nd7 8. Bf4 Nb6 9. Bb5 Bd7 10. 0-0 a6 11. Bd3 Bd6 12. Bg5 Be7 13. Bxe7 Nxe7 14. Qc2 Ng6 15. Be4 Rb8 16. Rfd1 c6 17. Ne1 0-0 18. g3 Qc7 19. Nd3 e5 20. Bxg6 fxg6 21. Nxe5 Bh3 22. Rd2 Qd6 23. Qb3+ 1-0

[Event "NED-ch U20"]
[Site "Hengelo"]
[Date "1995.??.??"]
[Round "7"]
[White "Nobbenhuis, Stefan"]
[Black "Van Roosmalen, Sjoerd"]
[Result "0-1"]
[ECO "C00"]
[PlyCount "78"]
[EventDate "1995.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 e6 2. Nf3 d5 3. Nc3 d4 4. Ne2 c5 5. c3 Nc6 6. cxd4 cxd4 7. Qa4 Bc5 8. b4 Bxb4 9. Nexd4 Nge7 10. Nxc6 Nxc6 11. Bb5 Qd6 12. a3 Bc5 13. Bb2 0-0 14. Bxc6 bxc6 15. Rc1 Bd7 16. Ne5 Rfb8 17. Ba1 Be8 18. 0-0 f6 19. Nc4 Qe7 20. d4 Bb6 21. Qc2 Rd8 22. Rfd1 Bh5 23. Rd2 Bg6 24. f3 Rac8 25. Qa4 e5 26. Nxb6 axb6 27. Rxc6 Rxc6 28. Qxc6 Qxa3 29. Bb2 Qe3+ 30. Rf2 Qe1+ 31. Rf1 Qb4 32. Bc3 Qb3 33. d5 b5 34. Ra1 h6 35. Ra8 Rxa8 36. Qxa8+ Kh7 37. Qa5 Be8 38. d6 Qd1+ 39. Kf2 Qxd6 0-1

[Event "NED-ch U20"]
[Site "Hengelo"]
[Date "1995.??.??"]
[Round "5"]
[White "Perluka, Esther"]
[Black "Van Roosmalen, Sjoerd"]
[Result "1/2-1/2"]
[ECO "D00"]
[PlyCount "31"]
[EventDate "1995.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. d4 Nf6 2. Bg5 g6 3. Bxf6 exf6 4. e3 d5 5. Bd3 Bg7 6. Nf3 0-0 7. 0-0 Re8 8. Re1 c6 9. c3 Bg4 10. h3 Bxf3 11. Qxf3 Qc7 12. Nd2 f5 13. Nb3 Nd7 14. Rad1 Rad8 15. Re2 Re7 16. Rde1 1/2-1/2

[Event "NED-ch U20"]
[Site "Hengelo"]
[Date "1995.??.??"]
[Round "1"]
[White "Thissen, Timon"]
[Black "Van Roosmalen, Sjoerd"]
[Result "1-0"]
[ECO "C00"]
[PlyCount "77"]
[EventDate "1995.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 e6 2. Nc3 d5 3. exd5 exd5 4. g3 Nf6 5. Bg2 c6 6. d3 Bd6 7. Nge2 0-0 8. 0-0 Re8 9. Bf4 Bg4 10. Bxd6 Qxd6 11. h3 Bh5 12. g4 Bxg4 13. hxg4 Nxg4 14. Ng3 Ne3 15. fxe3 Qxg3 16. Qf3 Qg6 17. e4 dxe4 18. Nxe4 Nd7 19. Qf5 Ne5 20. Qxg6 Nxg6 21. Nd6 Re7 22. Rae1 Rd7 23. Nf5 f6 24. Bh3 Kf8 25. d4 Rad8 26. c3 c5 27. Re3 b6 28. Kh2 Rb8 29. Kg3 cxd4 30. Nxd4 Rd5 31. Rf5 Rxf5 32. Bxf5 Ne5 33. Nf3 Nc4 34. Re2 g6 35. Bd3 Nd6 36. Nd4 Nf7 37. Re6 Ne5 38. Nc6 Nxc6 39. Rxf6+ 1-0

[Event "NED-ch U20"]
[Site "Hengelo"]
[Date "1995.??.??"]
[Round "3"]
[White "Van Briemen, Willem Jan"]
[Black "Van Roosmalen, Sjoerd"]
[Result "1-0"]
[ECO "D32"]
[PlyCount "117"]
[EventDate "1995.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. c4 c6 2. Nc3 d5 3. d4 Nf6 4. Nf3 e6 5. e3 Be7 6. Bd3 0-0 7. 0-0 c5 8. cxd5 exd5 9. dxc5 Bxc5 10. a3 Bg4 11. Be2 Nc6 12. b4 Bb6 13. Bb2 a6 14. Qb3 Be6 15. Qc2 h6 16. Rac1 Rc8 17. Qb1 Qe7 18. Na4 Ba7 19. Nc5 Bxc5 20. Rxc5 Ne4 21. Rcc1 Bg4 22. Qa2 Rfd8 23. Rfd1 Be6 24. Qa1 Nf6 25. Bxf6 Qxf6 26. Qxf6 gxf6 27. Rd2 Rd7 28. Rdc2 Rcd8 29. Bxa6 Nxb4 30. axb4 bxa6 31. Nd4 Rd6 32. Rc6 Kg7 33. Rxd6 Rxd6 34. Rc6 Rxc6 35. Nxc6 Bd7 36. Nd4 Kg6 37. f3 f5 38. Kf2 f6 39. Kg3 Kg5 40. Ne2 Bc6 41. h4+ Kg6 42. Kf4 h5 43. Nc3 Bb7 44. g3 Kf7 45. Kxf5 Ke7 46. g4 d4 47. exd4 Bxf3 48. gxh5 Bxh5 49. Nd5+ Kd6 50. Nxf6 Be2 51. h5 Bd3+ 52. Kf4 Ke6 53. Ke3 Bc2 54. Ne4 Kd5 55. Nc5 Kc4 56. Nxa6 Kb5 57. Nc5 Kxb4 58. Ne4 Kc4 59. h6 1-0

[Event "NED-ch U20"]
[Site "Hengelo"]
[Date "1995.??.??"]
[Round "9"]
[White "Van Roosmalen, Sjoerd"]
[Black "Bakker, Sven"]
[Result "1-0"]
[ECO "D40"]
[PlyCount "32"]
[EventDate "1995.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 c5 4. e3 Nf6 5. Nf3 Nc6 6. a3 Ne4 7. Qc2 Nxc3 8. Qxc3 dxc4 9. Bxc4 cxd4 10. exd4 Be7 11. 0-0 0-0 12. Bf4 Bd7 13. Rac1 Rc8 14. Qd2 Na5 15. Ba2 Bc6 16. Ne5 Qe8 1-0

[Event "NED-ch U20"]
[Site "Hengelo"]
[Date "1995.??.??"]
[Round "2"]
[White "Van Roosmalen, Sjoerd"]
[Black "Bootsma, Martin"]
[Result "1-0"]
[ECO "A44"]
[PlyCount "99"]
[EventDate "1995.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. d4 c5 2. d5 e5 3. c4 d6 4. e4 Be7 5. Bd3 Bg5 6. Ne2 Bxc1 7. Qxc1 Nh6 8. 0-0 Na6 9. Nbc3 Bd7 10. f4 f6 11. Qe3 Qe7 12. a3 Ng4 13. Qd2 exf4 14. Nxf4 Qe5 15. h3 Nh6 16. Nce2 Nf7 17. b4 Ng5 18. b5 Nc7 19. Rae1 b6 20. a4 0-0 21. a5 Nxe4 22. Qc2 f5 23. Bxe4 fxe4 24. Qc3 Rae8 25. Qxe5 Rxe5 26. axb6 axb6 27. Ra1 e3 28. Ra7 Rc8 29. Rb7 Re4 30. Rc1 Be8 31. Rxb6 Rd8 32. Rb7 Rd7 33. Rb6 g5 34. Nd3 g4 35. hxg4 Rxg4 36. Rb8 Kg7 37. b6 Bg6 38. bxc7 Rxc7 39. Ndf4 Rf7 40. Rd8 Rf6 41. Rc3 Rgxf4 42. Nxf4 Rxf4 43. Rxe3 Rxc4 44. Rxd6 Rd4 45. Rd7+ Kf6 46. d6 c4 47. Rd8 Kf7 48. Re7+ Kf6 49. Rf8+ Kg5 50. d7 1-0

[Event "NED-ch U20"]
[Site "Hengelo"]
[Date "1995.??.??"]
[Round "4"]
[White "Van Roosmalen, Sjoerd"]
[Black "Mannen, Henk"]
[Result "1/2-1/2"]
[ECO "D60"]
[PlyCount "39"]
[EventDate "1995.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Be7 4. Nf3 Nf6 5. Bg5 0-0 6. e3 h6 7. Bh4 Nbd7 8. Bd3 b6 9. cxd5 Nxd5 10. Bg3 Nxc3 11. bxc3 c5 12. Be4 Ba6 13. Bxa8 Qxa8 14. Qa4 Qb7 15. Rb1 Rc8 16. Rg1 cxd4 17. cxd4 Rc4 18. Qd1 Bb4+ 19. Nd2 Qc6 20. f3 1/2-1/2

[Event "NED-ch U20"]
[Site "Hengelo"]
[Date "1995.??.??"]
[Round "6"]
[White "Van Roosmalen, Sjoerd"]
[Black "Van de Beld, Dennis"]
[Result "1/2-1/2"]
[ECO "D40"]
[PlyCount "75"]
[EventDate "1995.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 c5 4. e3 Nf6 5. Nf3 Nc6 6. a3 b6 7. cxd5 exd5 8. Bb5 Bd7 9. dxc5 bxc5 10. 0-0 Qb6 11. Qc2 d4 12. exd4 cxd4 13. Re1+ Be7 14. Bxc6 Bxc6 15. Na4 Bxa4 16. Qxa4+ Kf8 17. Nxd4 Bc5 18. Be3 Nd5 19. Qc4 Nxe3 20. fxe3 a5 21. Rac1 Be7 22. Qc6 Qxc6 23. Rxc6 Bf6 24. b4 axb4 25. axb4 Re8 26. Rec1 Bg5 27. Kf1 Bxe3 28. Re1 g6 29. Nc2 Bg5 30. Rxe8+ Kxe8 31. Rc8+ Bd8 32. b5 Kd7 33. Ra8 Re8 34. Ra7+ Ke6 35. Nd4+ Kd5 36. Nc6 Bb6 37. Rxf7 Kc5 38. Rxh7 1/2-1/2

[Event "NED-ch U20"]
[Site "Hengelo"]
[Date "1995.??.??"]
[Round "8"]
[White "Van Tellingen, Frank"]
[Black "Van Roosmalen, Sjoerd"]
[Result "0-1"]
[ECO "C11"]
[PlyCount "30"]
[EventDate "1995.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. f4 c5 6. Nf3 Qb6 7. a3 Nc6 8. Be3 cxd4 9. Nxd4 a6 10. Qd2 Nxd4 11. Bxd4 Bc5 12. 0-0-0 Qc7 13. Bxc5 Nxc5 14. Bd3 b6 15. Rhe1 d4 0-1

