[Event "NED U20 op"]
[Site "Hengelo"]
[Date "1999.08.14"]
[Round "9"]
[White "Lieven, Menno"]
[Black "Marsman, O."]
[Result "1-0"]
[ECO "C30"]
[PlyCount "45"]
[EventDate "1999.08.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 071 Extra"]
[Source "ChessBase"]
[SourceDate "1999.09.14"]
[SourceVersion "1"]
[SourceVersionDate "1999.09.14"]
[SourceQuality "1"]

1. e4 e5 2. f4 d6 3. Nf3 Nc6 4. Bc4 h6 5. f5 Nf6 6. Nc3 b6 7. 0-0 Bb7 8. d3 Na5 9. Nd2 Nxc4 10. Nxc4 Qd7 11. a4 Nh7 12. Bd2 c6 13. a5 b5 14. Ne3 a6 15. Ng4 Be7 16. Qf3 Bg5 17. Bxg5 Nxg5 18. Qf2 0-0 19. Qh4 f6 20. Qg3 d5 21. h4 h5 22. hxg5 hxg4 23. g6 1-0

[Event "NED U20 op"]
[Site "Hengelo"]
[Date "1999.08.13"]
[Round "7"]
[White "Marsman, O."]
[Black "Fakkel, Ewout"]
[Result "1/2-1/2"]
[ECO "B72"]
[PlyCount "67"]
[EventDate "1999.08.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 071 Extra"]
[Source "ChessBase"]
[SourceDate "1999.09.14"]
[SourceVersion "1"]
[SourceVersionDate "1999.09.14"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. Bb5+ Bd7 8. Bxd7+ Qxd7 9. Qd2 0-0 10. Bh6 Nc6 11. Bxg7 Kxg7 12. 0-0 Rac8 13. Rad1 Ne5 14. Rfe1 h6 15. b3 Qc7 16. Ncb5 Qc5 17. c4 a6 18. Nc3 b5 19. Ncxb5 axb5 20. Nxb5 Nc6 21. Qe3 Qxe3 22. Rxe3 Ra8 23. a3 Nd7 24. f4 Rfd8 25. Kf2 Nc5 26. Ke2 Na6 27. g4 Kf8 28. h4 Ke8 29. Kd2 Rd7 30. Kc3 Nc7 31. Nxc7+ Rxc7 32. Kb2 Rb7 33. Rc3 Rab8 34. Rd2 1/2-1/2

[Event "NED U20 op"]
[Site "Hengelo"]
[Date "1999.08.13"]
[Round "8"]
[White "Van Kempen, Joost"]
[Black "Marsman, O."]
[Result "1/2-1/2"]
[ECO "A34"]
[PlyCount "82"]
[EventDate "1999.08.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 071 Extra"]
[Source "ChessBase"]
[SourceDate "1999.09.14"]
[SourceVersion "1"]
[SourceVersionDate "1999.09.14"]
[SourceQuality "1"]

1. c4 c5 2. Nc3 e6 3. g3 d5 4. cxd5 exd5 5. d4 c4 6. Bg2 Nf6 7. Bg5 Bb4 8. a3 Ba5 9. Nf3 Nc6 10. 0-0 h6 11. Bf4 0-0 12. Qc2 Re8 13. Rad1 Bxc3 14. bxc3 Qa5 15. a4 Ne4 16. Kh1 Bf5 17. Qb2 Nxc3 18. Qxb7 Nxd1 19. Qxc6 Rac8 20. Qb7 Nc3 21. Bd2 Rxe2 22. Rc1 Rxd2 23. Nxd2 Ne2 24. Rd1 Qxa4 25. Re1 Nxd4 26. Bxd5 Qd7 27. Qxd7 Bxd7 28. Nxc4 Rc5 29. Bxf7+ Kxf7 30. Ne5+ Rxe5 31. Rxe5 Bc6+ 32. f3 Bxf3+ 33. Kg1 Kf6 34. Ra5 Nc6 35. Ra6 Ke5 36. Kf2 Bd5 37. Ke3 Kd6 38. Kf4 Be6 39. h4 Bc8 40. Ra1 Ke7 41. Ke4 Ke6 1/2-1/2

[Event "NED U20 op"]
[Site "Hengelo"]
[Date "1999.08.12"]
[Round "6"]
[White "Blom, Gerben"]
[Black "Marsman, O."]
[Result "1-0"]
[ECO "C65"]
[PlyCount "63"]
[EventDate "1999.08.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 071 Extra"]
[Source "ChessBase"]
[SourceDate "1999.09.14"]
[SourceVersion "1"]
[SourceVersionDate "1999.09.14"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. 0-0 Bc5 5. c3 0-0 6. d4 Bb6 7. Bg5 a6 8. Bxc6 dxc6 9. Nxe5 h6 10. Bxf6 Qxf6 11. Nd2 c5 12. Nb3 cxd4 13. cxd4 Rd8 14. f4 Be6 15. Kh1 Bxb3 16. Qxb3 Rxd4 17. Qc2 Qe6 18. Rae1 Rad8 19. Nf3 Rc4 20. Qe2 Ba5 21. f5 Qc6 22. Ne5 Qb5 23. Nxc4 Bxe1 24. Rxe1 Rd4 25. b3 a5 26. e5 a4 27. e6 Qe8 28. Qe5 Rd3 29. Nb2 Rd2 30. Nxa4 Qc6 31. exf7+ Kh7 32. Qg3 1-0

[Event "NED U20 op"]
[Site "Hengelo"]
[Date "1999.08.11"]
[Round "5"]
[White "Marsman, O."]
[Black "Van der Linden, Bram"]
[Result "1/2-1/2"]
[ECO "D30"]
[PlyCount "62"]
[EventDate "1999.08.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 071 Extra"]
[Source "ChessBase"]
[SourceDate "1999.09.14"]
[SourceVersion "1"]
[SourceVersionDate "1999.09.14"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 e6 3. c4 Ne7 4. Nc3 Ng6 5. a3 c5 6. b4 dxc4 7. b5 e5 8. dxe5 Qxd1+ 9. Nxd1 Be7 10. Bg5 Bxg5 11. Nxg5 Nxe5 12. e3 Ng6 13. Bxc4 0-0 14. 0-0 Re8 15. Nf3 Be6 16. Bxe6 Rxe6 17. Nc3 Nd7 18. Na4 b6 19. Nxc5 bxc5 20. a4 a5 21. Rab1 Nde5 22. b6 Rb8 23. e4 Nc4 24. b7 Rxe4 25. Rb3 Nd2 26. Nxd2 Rxa4 27. Nf3 Re4 28. Rd1 Re2 29. Rd5 Rc2 30. Rb1 Rc4 31. Rd7 Ra4 1/2-1/2

[Event "NED U20 op"]
[Site "Hengelo"]
[Date "1999.08.11"]
[Round "4"]
[White "Nieuwenbroek, Mark"]
[Black "Marsman, O."]
[Result "1/2-1/2"]
[ECO "C45"]
[PlyCount "23"]
[EventDate "1999.08.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 071 Extra"]
[Source "ChessBase"]
[SourceDate "1999.09.14"]
[SourceVersion "1"]
[SourceVersionDate "1999.09.14"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Nxd4 5. Qxd4 b6 6. Bc4 Qf6 7. Qxf6 Nxf6 8. 0-0 Bc5 9. Nc3 0-0 10. e5 Ng4 11. Bf4 Re8 12. Nd5 1/2-1/2

[Event "NED U20 op"]
[Site "Hengelo"]
[Date "1999.08.10"]
[Round "2"]
[White "Groot, Marjoke"]
[Black "Marsman, O."]
[Result "1/2-1/2"]
[ECO "C65"]
[PlyCount "28"]
[EventDate "1999.08.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 071 Extra"]
[Source "ChessBase"]
[SourceDate "1999.09.14"]
[SourceVersion "1"]
[SourceVersionDate "1999.09.14"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. 0-0 Bc5 5. Re1 d6 6. h3 Bd7 7. c3 0-0 8. d3 Qc8 9. Bg5 Bxh3 10. gxh3 Qxh3 11. Be3 Bxe3 12. fxe3 Qg3+ 13. Kf1 Qh3+ 14. Kg1 Qg3+ 1/2-1/2

[Event "NED U20 op"]
[Site "Hengelo"]
[Date "1999.08.10"]
[Round "3"]
[White "Marsman, O."]
[Black "Brokken, Dennis"]
[Result "1/2-1/2"]
[ECO "B45"]
[PlyCount "141"]
[EventDate "1999.08.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 071 Extra"]
[Source "ChessBase"]
[SourceDate "1999.09.14"]
[SourceVersion "1"]
[SourceVersionDate "1999.09.14"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. a3 Qc7 7. Ndb5 Qb8 8. g3 a6 9. Nd4 Nxe4 10. Nxc6 Nxc3 11. Nxb8 Nxd1 12. Nxa6 bxa6 13. Kxd1 Bb7 14. Rg1 Bc5 15. Bg2 d5 16. Rf1 Bc6 17. f4 Bb5 18. Re1 Bf2 19. Rh1 0-0 20. Bf1 Bc6 21. Bg2 Rac8 22. Rf1 Bb6 23. Re1 Rfe8 24. Be3 Bd8 25. Bf1 Bb7 26. a4 f6 27. a5 e5 28. fxe5 fxe5 29. c3 Bf6 30. Bh3 Rc4 31. Bg2 Kf7 32. Kd2 Ba8 33. b3 Rcc8 34. Bf1 Bb7 35. Bh3 Ra8 36. Rac1 Kg8 37. Bg2 Kh8 38. Bb6 Re7 39. Bc5 Rf7 40. Re2 Rc8 41. Bb6 Bc6 42. Rce1 e4 43. c4 dxc4 44. bxc4 e3+ 45. Bxe3 Bxg2 46. Rxg2 Rxc4 47. Kd1 h6 48. Bd2 Rd7 49. Re6 Rcd4 50. h4 R4d6 51. Rxd6 Rxd6 52. Re2 Kg8 53. Ke1 Kf7 54. Re3 Rd5 55. Rb3 Bd8 56. Ra3 Kg6 57. Ra4 Bc7 58. Ke2 Kh5 59. Be1 Re5+ 60. Kf2 Rd5 61. Bb4 Rf5+ 62. Kg2 Rd5 63. g4+ Kg6 64. h5+ Kh7 65. Be1 Rd1 66. Kf2 Bg3+ 67. Kxg3 Rxe1 68. Kf4 Rb1 69. Re4 Ra1 70. Re5 Ra4+ 71. Kf5 1/2-1/2

[Event "NED U20 op"]
[Site "Hengelo"]
[Date "1999.08.09"]
[Round "1"]
[White "Marsman, O."]
[Black "Duijker, Rick"]
[Result "0-1"]
[ECO "B98"]
[PlyCount "62"]
[EventDate "1999.08.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 071 Extra"]
[Source "ChessBase"]
[SourceDate "1999.09.14"]
[SourceVersion "1"]
[SourceVersionDate "1999.09.14"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Be2 b5 9. e5 dxe5 10. fxe5 Nd5 11. Bxe7 Qxe7 12. Nxd5 exd5 13. 0-0 0-0 14. Bg4 Qc5 15. Kh1 Nc6 16. Bxc8 Raxc8 17. c3 Nxe5 18. Qh5 Ng6 19. Rae1 Rce8 20. Qf5 Rxe1 21. Rxe1 b4 22. Nb3 Qc4 23. cxb4 Qxb4 24. Rd1 Re8 25. Rf1 Ne5 26. h3 Qe4 27. Qf4 f6 28. Nd4 Nd3 29. Qd2 Qxd4 30. Rf3 Re1+ 31. Kh2 Qe5+ 0-1

[Event "Hengelo U20 op"]
[Site "Hengelo"]
[Date "1998.??.??"]
[Round "?"]
[White "Marsman, O."]
[Black "Fakkel, Ewout"]
[Result "1/2-1/2"]
[ECO "B56"]
[PlyCount "97"]
[EventDate "1998.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bb5 Bd7 7. 0-0 g6 8. Be3 Bg7 9. f4 0-0 10. h3 a6 11. Nxc6 bxc6 12. Be2 Qa5 13. Bd4 Rab8 14. Rb1 Be6 15. Qd3 c5 16. Bxf6 Bxf6 17. Qxa6 Bxc3 18. bxc3 Qxc3 19. Qd3 Qxd3 20. cxd3 Bxa2 21. Rxb8 Rxb8 22. Ra1 Rb1+ 23. Rxb1 Bxb1 24. Kf2 c4 25. d4 Bxe4 26. Bxc4 Kg7 27. g4 d5 28. Be2 h6 29. g5 f6 30. h4 h5 31. Bf1 Kf7 32. Ke3 Ke6 33. Bh3+ Bf5 34. Bf1 Bg4 35. Bd3 Bf5 36. Bf1 Kd6 37. Kd2 fxg5 38. fxg5 e5 39. Ke3 exd4+ 40. Kxd4 Be4 41. Bh3 Bh1 42. Bc8 Bf3 43. Bb7 Ke6 44. Bc8+ Kd6 45. Bb7 Be4 46. Ba6 Bf5 47. Bf1 Ke6 48. Bg2 Bb1 49. Bh3+ 1/2-1/2

[Event "Hengelo U20 op"]
[Site "Hengelo"]
[Date "1998.??.??"]
[Round "?"]
[White "Marsman, O."]
[Black "Kleijwegt, Martin"]
[Result "0-1"]
[ECO "C02"]
[PlyCount "55"]
[EventDate "1998.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Bb5 Qb6 6. Bxc6+ bxc6 7. f4 cxd4 8. cxd4 c5 9. Nf3 cxd4 10. 0-0 Bc5 11. Nbd2 Ba6 12. Re1 d3+ 13. Kh1 Nh6 14. h3 Nf5 15. Kh2 Ne3 16. Rxe3 Bxe3 17. Nb3 0-0 18. Ne1 Rac8 19. Bxe3 Qxe3 20. Qd2 Qe2 21. Rd1 Rc7 22. Qxe2 dxe2 23. Rd2 Rfc8 24. Kg1 Rc4 25. g3 g5 26. Rxe2 gxf4 27. gxf4 Rxf4 28. Rg2+ 0-1

[Event "Hengelo U20 op"]
[Site "Hengelo"]
[Date "1998.??.??"]
[Round "?"]
[White "Marsman, O."]
[Black "Verwiel, Eugene"]
[Result "0-1"]
[ECO "B01"]
[PlyCount "34"]
[EventDate "1998.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Nf6 3. c4 e6 4. dxe6 Bxe6 5. Nf3 Nc6 6. a3 Bc5 7. d3 Ng4 8. Be3 Bxe3 9. fxe3 Nxe3 10. Qe2 Nd4 11. Nxd4 Qxd4 12. Nc3 0-0-0 13. Nb5 Qe5 14. Kf2 Ng4+ 15. Ke1 Qf6 16. Nxa7+ Kb8 17. Nb5 Rhe8 0-1

[Event "Hengelo U20 op"]
[Site "Hengelo"]
[Date "1998.??.??"]
[Round "?"]
[White "Nieuwenbroek, Mark"]
[Black "Marsman, O."]
[Result "1/2-1/2"]
[ECO "C50"]
[PlyCount "41"]
[EventDate "1998.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. d3 h6 5. Be3 Bxe3 6. fxe3 Nf6 7. Nc3 0-0 8. 0-0 d6 9. Qe2 Be6 10. Bxe6 fxe6 11. h3 d5 12. exd5 exd5 13. e4 dxe4 14. Nxe4 Nxe4 15. Qxe4 Rf4 16. Qe3 Qf6 17. Nxe5 Rxf1+ 18. Rxf1 Qxe5 19. Qxe5 Nxe5 20. Re1 Re8 21. Kh1 1/2-1/2

[Event "Hengelo U20 op"]
[Site "Hengelo"]
[Date "1998.??.??"]
[Round "?"]
[White "Slaa, Ricardo"]
[Black "Marsman, O."]
[Result "1-0"]
[ECO "C51"]
[PlyCount "41"]
[EventDate "1998.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. b4 Bxb4 5. c3 Bc5 6. d4 exd4 7. cxd4 Bb4+ 8. Kf1 Nge7 9. Qb3 Ba5 10. Bxf7+ Kf8 11. Bc4 Qe8 12. Bb2 Bb6 13. Qe3 Ng6 14. h4 Na5 15. Bd5 d6 16. h5 c6 17. hxg6 cxd5 18. Rxh7 Rxh7 19. gxh7 Qh5 20. Qf4+ Ke8 21. Qh4 1-0

[Event "Hengelo U20 op"]
[Site "Hengelo"]
[Date "1998.??.??"]
[Round "?"]
[White "Vermeulen, Florence"]
[Black "Marsman, O."]
[Result "1-0"]
[ECO "A32"]
[PlyCount "63"]
[EventDate "1998.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bf4 c5 5. Nf3 cxd4 6. Nxd4 Bd6 7. Bg5 dxc4 8. e4 0-0 9. Bxc4 Be5 10. Ndb5 Bxc3+ 11. bxc3 Qxd1+ 12. Rxd1 Na6 13. Bxf6 gxf6 14. 0-0 b6 15. Rd3 Bb7 16. Nd6 Bc6 17. Bxa6 Rfd8 18. Rfd1 Rab8 19. Bb5 Bxb5 20. Nxb5 Rxd3 21. Rxd3 Rc8 22. Nxa7 Rc5 23. g3 Ra5 24. Nc8 b5 25. Rd2 Kf8 26. Rb2 Ra3 27. Rxb5 Rxc3 28. Rb8 Ke8 29. Ra8 Kd7 30. a4 Rxc8 31. Rxc8 Kxc8 32. Kg2 1-0

[Event "Hengelo U20 op"]
[Site "Hengelo"]
[Date "1998.??.??"]
[Round "?"]
[White "Vissers, V."]
[Black "Marsman, O."]
[Result "1-0"]
[ECO "D02"]
[PlyCount "53"]
[EventDate "1998.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 e6 3. Bg5 f6 4. Bf4 Bd6 5. Bxd6 Qxd6 6. e3 Qb4+ 7. Nbd2 Qxb2 8. Bd3 Nc6 9. 0-0 Nge7 10. c4 dxc4 11. Nxc4 Qb4 12. Rb1 Qc3 13. Rb3 Qxb3 14. axb3 0-0 15. Nfd2 Re8 16. Qh5 g6 17. Qh4 Kg7 18. f4 f5 19. Rf3 Bd7 20. Rh3 h5 21. Rg3 Rh8 22. Ne5 Be8 23. Ndf3 Nxe5 24. Nxe5 Ng8 25. Bc4 Bf7 26. Qg5 Rh6 27. Bxe6 1-0

