[Event "NRW Class1 0809"]
[Site "Germany"]
[Date "2009.03.22"]
[Round "8.7"]
[White "Hunold, Rolf"]
[Black "Los, Arend"]
[Result "1-0"]
[ECO "B07"]
[WhiteElo "2112"]
[BlackElo "1983"]
[PlyCount "67"]
[EventDate "2008.09.21"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]
[WhiteTeam "Letmathe"]
[BlackTeam "Kleve Turm"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. h3 Bg7 5. Be3 c6 6. Qd2 b5 7. Bd3 Bb7 8. f3 Nbd7 9. Bh6 0-0 10. Bxg7 Kxg7 11. Nge2 e5 12. g4 b4 13. Nd1 a5 14. Ne3 Re8 15. 0-0-0 d5 16. g5 Nh5 17. exd5 cxd5 18. Bb5 Re6 19. Bxd7 Qxd7 20. dxe5 Kg8 21. Ng4 Qe7 22. f4 a4 23. Nd4 Ng3 24. Nf6+ Kg7 25. Rhg1 Nf5 26. Nxf5+ gxf5 27. Qd3 b3 28. axb3 Qb4 29. Qd4 Qb5 30. b4 a3 31. bxa3 Rxa3 32. Nh5+ Kg8 33. Rg3 Ra1+ 34. Qxa1 1-0

[Event "NRW Class1 0809"]
[Site "Germany"]
[Date "2009.03.01"]
[Round "7.7"]
[White "Los, Arend"]
[Black "Huelsmann, Josef"]
[Result "1-0"]
[ECO "C01"]
[WhiteElo "1983"]
[BlackElo "2239"]
[PlyCount "69"]
[EventDate "2008.09.21"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]
[WhiteTeam "Kleve Turm"]
[BlackTeam "Monheim"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Nf3 Nf6 5. c4 Bb4+ 6. Nc3 0-0 7. Qb3 Qe7+ 8. Be3 dxc4 9. Bxc4 c6 10. 0-0 b5 11. Bd3 Be6 12. Qc2 Nbd7 13. Ne5 Rfc8 14. Ne4 Bd5 15. Nxf6+ Nxf6 16. Bg5 h6 17. Bh4 g5 18. Bg3 Nh5 19. Ng4 Kg7 20. Be5+ f6 21. Bg6 fxe5 22. Bxh5 e4 23. f3 Rf8 24. Ne5 Qd6 25. fxe4 Bc4 26. Rfd1 Bc5 27. Qc3 Qxe5 28. dxc5 Qxc3 29. bxc3 Rad8 30. Rd6 Rxd6 31. cxd6 Kf6 32. a4 Ke5 33. axb5 Bxb5 34. d7 a5 35. Be8 1-0

[Event "NRW Class1 0809"]
[Site "Germany"]
[Date "2009.02.01"]
[Round "6.7"]
[White "Mueller, Michael1111"]
[Black "Los, Arend"]
[Result "1-0"]
[ECO "C22"]
[WhiteElo "2212"]
[BlackElo "1983"]
[PlyCount "34"]
[EventDate "2008.09.21"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]
[WhiteTeam "Duesseldorf"]
[BlackTeam "Kleve Turm"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 e5 2. d4 exd4 3. Qxd4 Nc6 4. Qe3 Be7 5. Nc3 Nf6 6. Bd2 0-0 7. 0-0-0 d5 8. exd5 Nb4 9. Bc4 Ng4 10. Qe1 Bf5 11. Bb3 a5 12. f3 a4 13. Nxa4 Rxa4 14. Bxa4 Qa8 15. Bb3 Re8 16. fxg4 Bxg4 17. Nf3 Bf6 1-0

[Event "NRW Class1 0809"]
[Site "Germany"]
[Date "2008.11.30"]
[Round "4.6"]
[White "Los, Arend"]
[Black "Haves, Reinhard"]
[Result "0-1"]
[ECO "A42"]
[WhiteElo "1983"]
[BlackElo "2181"]
[PlyCount "62"]
[EventDate "2008.09.21"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]
[WhiteTeam "Kleve Turm"]
[BlackTeam "Neuenkirchen"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 g6 2. d4 Bg7 3. c4 d6 4. Nc3 Nc6 5. Be3 Nf6 6. Be2 e5 7. d5 Nd4 8. Nf3 Ng4 9. Nxd4 Nxe3 10. fxe3 exd4 11. exd4 Qg5 12. 0-0 0-0 13. Qd3 Bd7 14. c5 Rae8 15. Bf3 f5 16. Rae1 Qf6 17. c6 Qxd4+ 18. Qxd4 Bxd4+ 19. Kh1 bxc6 20. exf5 c5 21. fxg6 hxg6 22. h3 Kg7 23. Bd1 Rxf1+ 24. Rxf1 Re3 25. Bf3 Bf5 26. Nb5 Bd3 27. Nxd4 Bxf1 28. Ne6+ Kf6 29. Nxc7 Be2 30. Bxe2 Rxe2 31. Nb5 Ke5 0-1

[Event "NRW Class1 0809"]
[Site "Germany"]
[Date "2008.11.09"]
[Round "3.7"]
[White "Los, Arend"]
[Black "Becker, Joerg"]
[Result "1/2-1/2"]
[ECO "B38"]
[WhiteElo "1983"]
[BlackElo "2182"]
[PlyCount "67"]
[EventDate "2008.09.21"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]
[WhiteTeam "Kleve Turm"]
[BlackTeam "Sodingen"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 g6 2. d4 Bg7 3. c4 c5 4. Nf3 cxd4 5. Nxd4 Nc6 6. Be3 Qa5+ 7. Nc3 Nf6 8. Nb3 Qc7 9. Be2 h5 10. Rc1 d6 11. f3 0-0 12. 0-0 b6 13. Nd4 Nxd4 14. Bxd4 Bb7 15. Nd5 Nxd5 16. cxd5 Qd7 17. Bxg7 Kxg7 18. Qd4+ f6 19. a4 Rfc8 20. Bb5 Qd8 21. b4 a5 22. bxa5 bxa5 23. Bc6 Bxc6 24. Rxc6 Rcb8 25. Rfc1 Rb4 26. R1c4 Rab8 27. Qa7 R8b7 28. Qa6 Kf7 29. Rxb4 Rxb4 30. Rc8 Qb6+ 31. Qxb6 Rxb6 32. Ra8 Rb1+ 33. Kf2 h4 34. Rxa5 1/2-1/2

[Event "NRW Class1 0809"]
[Site "Germany"]
[Date "2008.10.12"]
[Round "2.7"]
[White "Wolf, Norbert"]
[Black "Los, Arend"]
[Result "1/2-1/2"]
[ECO "B09"]
[WhiteElo "2057"]
[BlackElo "1983"]
[PlyCount "22"]
[EventDate "2008.09.21"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]
[WhiteTeam "Brackweda"]
[BlackTeam "Kleve Turm"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. f4 Bg7 5. Nf3 c5 6. Bb5+ Bd7 7. e5 Ng4 8. e6 fxe6 9. Ng5 Bxb5 10. Nxe6 Bxd4 11. Nxd8 Bf2+ 1/2-1/2

[Event "NRW Class1 0809"]
[Site "Germany"]
[Date "2008.09.21"]
[Round "1.6"]
[White "Peschlow, Patrick"]
[Black "Los, Arend"]
[Result "1-0"]
[ECO "B07"]
[WhiteElo "2285"]
[BlackElo "1983"]
[PlyCount "55"]
[EventDate "2008.09.21"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]
[WhiteTeam "Koeln Porz II"]
[BlackTeam "Kleve Turm"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Be3 c6 5. h3 Nbd7 6. f4 e5 7. Qf3 Bg7 8. 0-0-0 Qa5 9. g4 b5 10. Kb1 Bb7 11. dxe5 dxe5 12. g5 Nh5 13. f5 0-0-0 14. f6 Bf8 15. h4 Bb4 16. Bh3 Bxc3 17. bxc3 Kc7 18. Bxd7 Rxd7 19. Rxd7+ Kxd7 20. Ne2 Kc7 21. Rd1 b4 22. Bd2 c5 23. cxb4 cxb4 24. Qb3 Bxe4 25. Bxb4 Qa6 26. Qxf7+ Kb8 27. Qe7 Rc8 28. Qxe5+ 1-0

[Event "Utrecht OKU op-B"]
[Site "Utrecht"]
[Date "2004.06.06"]
[Round "?"]
[White "Mulder, Gerard"]
[Black "Los, Arend"]
[Result "1/2-1/2"]
[ECO "C79"]
[PlyCount "87"]
[EventDate "2004.06.04"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "NED"]
[SourceTitle "CBM 100 Extra"]
[Source "ChessBase"]
[SourceDate "2004.07.06"]
[SourceVersion "2"]
[SourceVersionDate "2004.07.06"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. 0-0 g6 6. d4 Bd7 7. c3 Nf6 8. Re1 Nh5 9. dxe5 dxe5 10. Bxc6 Bxc6 11. Qxd8+ Rxd8 12. Nbd2 Bg7 13. Nf1 0-0 14. Ng3 Nf4 15. Bxf4 exf4 16. Nf1 Rd3 17. N1d2 Rfd8 18. Nb3 b6 19. Nbd4 Bb7 20. Re2 c5 21. Ne1 cxd4 22. Nxd3 dxc3 23. Nxf4 cxb2 24. Rb1 a5 25. f3 Ba6 26. Rexb2 Bd4+ 27. Rf2 Bxf2+ 28. Kxf2 Rd2+ 29. Ke3 Rxa2 30. Rxb6 Bf1 31. h4 Bxg2 32. h5 Kg7 33. hxg6 hxg6 34. Nxg2 Rxg2 35. Ra6 Ra2 36. Kd4 Kh6 37. f4 a4 38. Ra7 Kg7 39. e5 a3 40. e6 Re2 41. Rxf7+ Kh6 42. Ra7 Rxe6 43. Rxa3 Kh5 44. Rg3 1/2-1/2

[Event "Kleve op"]
[Site "Kleve"]
[Date "2000.06.04"]
[Round "7"]
[White "Simons, Stefan"]
[Black "Los, Arend"]
[Result "0-1"]
[ECO "C56"]
[PlyCount "46"]
[EventDate "2000.06.01"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[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. Bc4 Nf6 5. 0-0 Bc5 6. e5 d5 7. exf6 dxc4 8. Bg5 gxf6 9. Re1+ Be6 10. Bh4 0-0 11. Nfd2 Re8 12. Qf3 Be7 13. Na3 Ne5 14. Rxe5 fxe5 15. Bxe7 Qxe7 16. Qg3+ Kf8 17. Qxe5 f6 18. Qxd4 Rad8 19. Qc3 Bd5 20. h3 Qg7 21. Nf3 Re4 22. g3 Rf4 23. Ne5 Rh4 0-1

[Event "Kleve op"]
[Site "Kleve"]
[Date "2000.06.03"]
[Round "6"]
[White "Los, Arend"]
[Black "Mohrholz, Stefan"]
[Result "0-1"]
[ECO "C01"]
[PlyCount "72"]
[EventDate "2000.06.01"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Nf3 Nf6 5. Bg5 Be7 6. c4 0-0 7. Nc3 Re8 8. Qb3 Ne4 9. Bxe7 Nxc3 10. bxc3 Rxe7+ 11. Kd2 c6 12. Bd3 dxc4 13. Bxc4 b5 14. Bd3 Be6 15. Qc2 h6 16. a4 bxa4 17. Qxa4 c5 18. Be4 Bd7 19. Qc2 Bc6 20. Rhe1 cxd4 21. cxd4 Bxe4 22. Rxe4 Rxe4 23. Qxe4 Nd7 24. Qd5 a5 25. h4 a4 26. Kd3 a3 27. Ra2 Ra5 28. Qc4 Nc5+ 29. Ke2 Ne6 30. Kf1 Qb8 31. g3 Qb1+ 32. Kg2 Qe4 33. Qc3 Ra8 34. Qe3 Qd5 35. Qd2 Nxd4 36. Kh3 Qf5+ 0-1

[Event "Kleve op"]
[Site "Kleve"]
[Date "2000.06.03"]
[Round "5"]
[White "Smolin, Stefan"]
[Black "Los, Arend"]
[Result "1-0"]
[ECO "C29"]
[PlyCount "50"]
[EventDate "2000.06.01"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 e5 2. Nc3 Nf6 3. f4 d5 4. fxe5 Nxe4 5. d3 Nxc3 6. bxc3 Nc6 7. Nf3 d4 8. Be2 Be7 9. 0-0 0-0 10. cxd4 Nxd4 11. c3 Nxe2+ 12. Qxe2 Bg4 13. d4 c5 14. Qe4 Bh5 15. Be3 Qc7 16. d5 Rfe8 17. Bf4 c4 18. d6 Bxd6 19. exd6 Rxe4 20. dxc7 Rxf4 21. Rad1 Re4 22. Rd8+ Re8 23. Rxa8 Rxa8 24. Rd1 Rf8 25. Rd8 Bxf3 1-0

[Event "Kleve op"]
[Site "Kleve"]
[Date "2000.06.02"]
[Round "4"]
[White "Los, Arend"]
[Black "Csomos, Roland"]
[Result "0-1"]
[ECO "B13"]
[BlackElo "2277"]
[PlyCount "36"]
[EventDate "2000.06.01"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. c4 c6 2. e4 d5 3. exd5 cxd5 4. d4 Nf6 5. Nc3 Nc6 6. Nf3 Bg4 7. Be3 e6 8. Be2 Bb4 9. 0-0 dxc4 10. Bxc4 0-0 11. Qe2 Nxd4 12. Bxd4 Bxf3 13. Qe3 Bh5 14. h3 Rc8 15. Bb3 a6 16. a3 Bd6 17. Qg5 Bh2+ 18. Kxh2 Qxd4 0-1

[Event "Kleve op"]
[Site "Kleve"]
[Date "2000.06.02"]
[Round "3"]
[White "Simon, Peter1111"]
[Black "Los, Arend"]
[Result "0-1"]
[ECO "D35"]
[WhiteElo "2085"]
[PlyCount "64"]
[EventDate "2000.06.01"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Be7 4. cxd5 exd5 5. Bf4 Nf6 6. Qc2 g6 7. e3 Bf5 8. Qd2 0-0 9. f3 c5 10. g4 Be6 11. Nge2 Nc6 12. Bg2 Rc8 13. Bh6 Re8 14. h4 Bxg4 15. 0-0-0 Bf5 16. Ng3 Be6 17. Kb1 Qa5 18. h5 Bd6 19. Qf2 cxd4 20. exd4 Bxg3 21. Qxg3 Bf5+ 22. Ka1 Nb4 23. Rd2 Nc2+ 24. Rxc2 Bxc2 25. hxg6 fxg6 26. Bd2 Qb6 27. Qh4 Rc7 28. Bg5 Rxc3 29. Bxf6 Qc7 30. Qg5 Bf5 31. Be5 Qc6 32. Bf4 Ra3 0-1

[Event "Kleve op"]
[Site "Kleve"]
[Date "2000.06.01"]
[Round "2"]
[White "Los, Arend"]
[Black "Jordan, Dieter"]
[Result "1-0"]
[ECO "B27"]
[PlyCount "39"]
[EventDate "2000.06.01"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Qc7 3. d4 e6 4. c3 a6 5. g3 b6 6. Bg2 d6 7. 0-0 Nd7 8. a4 Bb7 9. Re1 Ngf6 10. e5 dxe5 11. dxe5 Ng4 12. Bf4 Be7 13. Nbd2 g5 14. Nxg5 Bxg5 15. Bxb7 Bxf4 16. Bxa8 Bxd2 17. Qxd2 Ngxe5 18. Rad1 0-0 19. Bg2 Rd8 20. Qg5+ 1-0

[Event "Kleve op"]
[Site "Kleve"]
[Date "2000.06.01"]
[Round "1"]
[White "Mohrholz, Uwe"]
[Black "Los, Arend"]
[Result "1/2-1/2"]
[ECO "C37"]
[PlyCount "137"]
[EventDate "2000.06.01"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 e5 2. f4 exf4 3. Nf3 g5 4. d4 g4 5. Ne5 Qh4+ 6. Kd2 d6 7. Nd3 Nf6 8. Qe2 Bh6 9. Kc3 f3 10. gxf3 gxf3 11. Qxf3 Bg4 12. Qg2 Bxc1 13. Nxc1 Qe1+ 14. Nd2 Qe3+ 15. Nd3 Nc6 16. Qg1 Qh6 17. Re1 0-0-0 18. Qe3 Qxe3 19. Rxe3 d5 20. e5 Ne4+ 21. Nxe4 dxe4 22. Nf2 Bf3 23. Bh3+ Kb8 24. Rhe1 Nxd4 25. Nxe4 Bxe4 26. Rxe4 Nf3 27. Rf1 Nd2 28. Ref4 Nxf1 29. Bxf1 Rd7 30. Bc4 Re7 31. Rf5 Rhe8 32. Kd4 Rd8+ 33. Kc3 Rde8 34. Kd4 c5+ 35. Ke4 Rd8 36. Bxf7 Rd2 37. Bb3 Kc7 38. a4 Rxh2 39. e6 Re2+ 40. Kd3 Re1 41. Kd2 Re4 42. Rxc5+ Kd6 43. Rh5 R4xe6 44. Bxe6 Kxe6 45. Kc3 Kf6 46. b4 Kg6 47. Rh1 h5 48. Kd4 Rd7+ 49. Kc4 Kg5 50. a5 h4 51. Kb5 Kg4 52. c4 Kg3 53. c5 h3 54. a6 Kg2 55. Rc1 h2 56. Rc2+ Kg3 57. Rc3+ Kg4 58. Rc4+ Kg5 59. Rc1 Kf4 60. Ka5 Kg3 61. b5 bxa6 62. Kxa6 Rc7 63. Rc3+ Kg4 64. Rc4+ Kg5 65. Rc1 Kf4 66. c6 Rh7 67. Rh1 Kg3 68. Rc1 Kf4 69. Rh1 1/2-1/2

[Event "Utrecht OKU op-A"]
[Site "Utrecht"]
[Date "2000.05.21"]
[Round "5"]
[White "Los, Arend"]
[Black "De Blecourt, Sandra"]
[Result "0-1"]
[ECO "A11"]
[BlackElo "2027"]
[PlyCount "102"]
[EventDate "2000.05.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. c4 c6 2. Nf3 d5 3. e3 Nf6 4. Nc3 Bg4 5. cxd5 Nxd5 6. Bc4 e6 7. Qb3 Qb6 8. Ne5 Qxb3 9. Bxb3 Bh5 10. g4 Bg6 11. f4 Bd6 12. Nxg6 hxg6 13. Bxd5 exd5 14. h4 Nd7 15. b3 g5 16. fxg5 Rxh4 17. Rxh4 Bg3+ 18. Ke2 Bxh4 19. g6 f6 20. Bb2 Nf8 21. Na4 0-0-0 22. Nc5 Re8 23. Rh1 Nxg6 24. Kf3 b6 25. Nd3 Bg5 26. Rh7 Rg8 27. Nf4 Ne5+ 28. Bxe5 fxe5 29. Ne6 e4+ 30. Ke2 Bf6 31. g5 Be5 32. Nf4 Kd7 33. d4 Bxf4 34. exf4 Ke6 35. b4 Kf5 36. Ke3 Kg6 37. Rh1 Rc8 38. Rc1 Kf5 39. a4 Ke6 40. Rf1 g6 41. Rc1 Rc7 42. a5 Kd6 43. axb6 axb6 44. Ra1 Rh7 45. Ra6 Rh3+ 46. Ke2 Rf3 47. Rxb6 Kc7 48. Ra6 Rxf4 49. Ra7+ Kb6 50. Rg7 Kb5 51. Rxg6 Rg4 0-1

[Event "Utrecht OKU op-A"]
[Site "Utrecht"]
[Date "2000.05.21"]
[Round "6"]
[White "Muhren, Bianca"]
[Black "Los, Arend"]
[Result "1-0"]
[ECO "C17"]
[PlyCount "71"]
[EventDate "2000.05.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. d4 d5 2. e4 e6 3. Nc3 Bb4 4. Bd2 Ne7 5. e5 c5 6. Nge2 Nbc6 7. Nb5 Bxd2+ 8. Qxd2 0-0 9. c3 Qa5 10. Na3 cxd4 11. cxd4 Qxd2+ 12. Kxd2 f6 13. f4 Bd7 14. g3 fxe5 15. dxe5 Nf5 16. Nc2 Rac8 17. Rc1 Rc7 18. Bh3 Nfe7 19. Ncd4 Nf5 20. Bxf5 exf5 21. Rc5 b6 22. Rxc6 Bxc6 23. Ne6 Re7 24. Nxf8 Kxf8 25. Nd4 Bd7 26. Rc1 g6 27. Rc7 a6 28. Rb7 b5 29. Ra7 Bc8 30. Rxe7 Kxe7 31. Kc3 Kd7 32. Kb4 Kc7 33. Kc5 Bb7 34. Ne6+ Kc8 35. Nf8 Kc7 36. Nxh7 1-0

[Event "Utrecht OKU op-A"]
[Site "Utrecht"]
[Date "2000.05.20"]
[Round "3"]
[White "De Jonge, Jan"]
[Black "Los, Arend"]
[Result "0-1"]
[ECO "C68"]
[PlyCount "70"]
[EventDate "2000.05.??"]
[EventType "swiss"]
[EventRounds "6"]
[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. Bb5 a6 4. Bxc6 dxc6 5. 0-0 Bd6 6. d4 Bg4 7. c3 Qf6 8. Be3 Bxf3 9. Qxf3 Qxf3 10. gxf3 f6 11. Nd2 Ne7 12. Kh1 Ng6 13. Rg1 0-0 14. Nc4 Nh4 15. Nxd6 cxd6 16. Rg3 f5 17. Bh6 Ng6 18. exf5 Rxf5 19. Bg5 Raf8 20. Rag1 Rxf3 21. Be3 e4 22. Rg4 d5 23. R1g2 R8f7 24. Kg1 Ne7 25. R2g3 Rxg3+ 26. Rxg3 Nf5 27. Rh3 Nxe3 28. Rxe3 g5 29. Rg3 h6 30. Kf1 Rf4 31. Ke2 Kf7 32. Ke3 Kf6 33. Ke2 Kf5 34. h3 h5 35. Ke3 h4 0-1

[Event "Utrecht OKU op-A"]
[Site "Utrecht"]
[Date "2000.05.20"]
[Round "2"]
[White "Los, Arend"]
[Black "Rosmuller, Anton J"]
[Result "0-1"]
[ECO "A16"]
[BlackElo "2220"]
[PlyCount "58"]
[EventDate "2000.05.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 d5 3. cxd5 Nxd5 4. g3 c6 5. Bg2 Nc7 6. Nf3 g6 7. 0-0 Bg7 8. d3 0-0 9. Be3 Nd7 10. Qd2 Re8 11. Bh6 Bh8 12. Ng5 Nf6 13. h3 Ne6 14. Nxe6 Bxe6 15. Na4 Nd5 16. Nc5 Bc8 17. e4 Nc7 18. Rac1 b6 19. Nb3 c5 20. d4 cxd4 21. e5 Rb8 22. Nxd4 Bb7 23. Nc6 Qxd2 24. Bxd2 Bxc6 25. Bxc6 Red8 26. Bb4 Kf8 27. f4 Ne6 28. Rfd1 Nd4 29. Rc4 Nxc6 0-1

[Event "Utrecht OKU op-A"]
[Site "Utrecht"]
[Date "2000.05.20"]
[Round "4"]
[White "Vroombout, Enrico"]
[Black "Los, Arend"]
[Result "0-1"]
[ECO "C45"]
[WhiteElo "2141"]
[PlyCount "46"]
[EventDate "2000.05.??"]
[EventType "swiss"]
[EventRounds "6"]
[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. d4 exd4 4. Nxd4 Nf6 5. Nxc6 bxc6 6. e5 Qe7 7. Qe2 Nd5 8. c4 Nb6 9. b3 g6 10. Bb2 Bg7 11. Bc3 0-0 12. h4 Re8 13. Rh3 d6 14. Re3 dxe5 15. f4 Qxh4+ 16. g3 Qg4 17. Qb2 Bf5 18. Be2 Qh3 19. Nd2 exf4 20. Rxe8+ Rxe8 21. Bxg7 Qh1+ 22. Kf2 fxg3+ 23. Kxg3 Qh3+ 0-1

[Event "Zwolle KPMG op"]
[Site "Zwolle"]
[Date "2000.03.10"]
[Round "1"]
[White "Berkvens, Joost"]
[Black "Los, Arend"]
[Result "1-0"]
[ECO "C74"]
[WhiteElo "2300"]
[BlackElo "1890"]
[PlyCount "61"]
[EventDate "2000.03.11"]
[EventType "swiss"]
[EventRounds "6"]
[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 d6 5. c3 f5 6. exf5 Bxf5 7. 0-0 Bd3 8. Re1 Be7 9. Bc2 Bxc2 10. Qxc2 Qd7 11. d4 exd4 12. cxd4 0-0-0 13. d5 Ne5 14. Nd4 Rf8 15. Nc3 Bh4 16. Be3 Nh6 17. Ne6 Nhg4 18. Nxf8 Rxf8 19. Ne4 Kb8 20. Rac1 Qf7 21. h3 Nxe3 22. Rxe3 Bd8 23. Qd2 g5 24. Nc5 g4 25. Ne6 Nf3+ 26. gxf3 gxf3 27. Re4 Rg8+ 28. Rg4 h5 29. Rg3 Bh4 30. Qf4 Rxg3+ 31. fxg3 1-0

[Event "Haarlem AKN op 08th"]
[Site "Haarlem"]
[Date "1999.07.04"]
[Round "6"]
[White "Hennipman, Rene"]
[Black "Los, Arend"]
[Result "1-0"]
[ECO "C29"]
[PlyCount "69"]
[EventDate "1999.07.02"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 e5 2. Nc3 Nf6 3. f4 d5 4. fxe5 Nxe4 5. d3 Nxc3 6. bxc3 d4 7. Nf3 Nc6 8. Be2 Bc5 9. 0-0 0-0 10. Kh1 dxc3 11. Bf4 Be6 12. Qe1 f6 13. exf6 Qxf6 14. Ng5 Bd5 15. Bf3 Bxf3 16. Rxf3 Nd4 17. Ne4 Qc6 18. Rf2 Nxc2 19. Rxc2 Rxf4 20. Qxc3 Raf8 21. Rg1 Bxg1 22. Qb3+ Kh8 23. Rxc6 bxc6 24. g3 Rf1 25. Kg2 Bb6 26. Qc4 h6 27. Qxc6 Rb1 28. Qc2 Rff1 29. g4 Rfc1 30. Qa4 Rb2+ 31. Kh3 Rf1 32. Ng3 Re1 33. Qd7 Bg1 34. Nf5 Rxh2+ 35. Kg3 1-0

[Event "Haarlem AKN op 08th"]
[Site "Haarlem"]
[Date "1999.07.04"]
[Round "5"]
[White "Hensbergen, Willem"]
[Black "Los, Arend"]
[Result "1/2-1/2"]
[ECO "A34"]
[PlyCount "95"]
[EventDate "1999.07.02"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 c5 3. Nf3 d5 4. d4 cxd4 5. Nxd5 Nxd5 6. cxd5 Qxd5 7. Qxd4 Be6 8. e4 Qd7 9. Qxd7+ Bxd7 10. Ne5 e6 11. Bd2 Bd6 12. Nxd7 Nxd7 13. Bc3 Nc5 14. Bxg7 Rg8 15. e5 Rxg7 16. exd6 Rd8 17. Bb5+ Kf8 18. 0-0 Rxd6 19. Rac1 Rg5 20. Rfd1 Ke7 21. Rxd6 Kxd6 22. Be2 Rd5 23. Rd1 Rxd1+ 24. Bxd1 Nd3 25. Bc2 Nxb2 26. Bxh7 b5 27. g4 Ke5 28. Bc2 Kf4 29. h3 Nc4 30. Bd3 Nd6 31. Kf1 b4 32. Ke2 Kg5 33. Ke3 e5 34. Bf1 a5 35. Kd3 f6 36. Bg2 Kh4 37. Kc2 a4 38. Bc6 b3+ 39. axb3 axb3+ 40. Kxb3 Kxh3 41. f3 Nf7 42. Kc4 Kg3 43. Kd3 Kf4 44. Ke2 Ng5 45. Kf2 Ne6 46. Be4 Nc5 47. Bh7 Nb3 48. Be4 1/2-1/2

[Event "Haarlem AKN op 08th"]
[Site "Haarlem"]
[Date "1999.07.03"]
[Round "4"]
[White "Bakkes, Frits"]
[Black "Los, Arend"]
[Result "0-1"]
[ECO "C12"]
[PlyCount "48"]
[EventDate "1999.07.02"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. d4 e6 2. Nc3 d5 3. e4 Bb4 4. Bd3 dxe4 5. Bxe4 Nf6 6. Bg5 Be7 7. Bxf6 Bxf6 8. Qf3 c6 9. Nge2 Nd7 10. 0-0-0 Qa5 11. Kb1 0-0 12. h4 c5 13. h5 h6 14. d5 Ne5 15. Qg3 Nc4 16. Rd3 Qb4 17. b3 Rd8 18. dxe6 Bxe6 19. Bd5 Na3+ 20. Kb2 Rxd5 21. Rf3 Be5 22. Nf4 Rd2 23. Re3 Rxc2+ 24. Ka1 Rxc3 0-1

[Event "Haarlem AKN op 08th"]
[Site "Haarlem"]
[Date "1999.07.03"]
[Round "3"]
[White "De Saegher, Chris"]
[Black "Los, Arend"]
[Result "1-0"]
[ECO "E94"]
[WhiteElo "2230"]
[PlyCount "33"]
[EventDate "1999.07.02"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. Nc3 0-0 5. e4 d6 6. Be2 e5 7. Be3 Nbd7 8. 0-0 c6 9. d5 Qe7 10. b4 Ng4 11. Bg5 f6 12. Bd2 c5 13. Nb5 f5 14. Nc7 Rb8 15. Ne6 Rf7 16. Nfg5 Ndf6 17. bxc5 1-0

[Event "Haarlem AKN op 08th"]
[Site "Haarlem"]
[Date "1999.07.02"]
[Round "1"]
[White "Los, Arend"]
[Black "De Myttenaere, Mario"]
[Result "1-0"]
[ECO "C48"]
[PlyCount "29"]
[EventDate "1999.07.02"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Nc3 Nc6 4. Bb5 Nd4 5. Nxd4 exd4 6. e5 Qe7 7. 0-0 dxc3 8. exf6 Qxf6 9. dxc3 c6 10. Bd3 Be7 11. Qh5 h6 12. Re1 b5 13. Qe2 Qe6 14. Bf4 g6 15. Qd2 1-0

[Event "Haarlem AKN op 08th"]
[Site "Haarlem"]
[Date "1999.07.02"]
[Round "2"]
[White "Los, Arend"]
[Black "Wunnink, Michael"]
[Result "0-1"]
[ECO "E94"]
[BlackElo "2198"]
[PlyCount "44"]
[EventDate "1999.07.02"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. c4 g6 2. Nc3 Bg7 3. d4 d6 4. e4 Nf6 5. Be3 e5 6. Nge2 Nc6 7. f3 exd4 8. Nxd4 0-0 9. Be2 Re8 10. 0-0 Nh5 11. Qd2 Nf4 12. Nxc6 Nxe2+ 13. Nxe2 bxc6 14. Bd4 Bxd4+ 15. Nxd4 c5 16. Ne2 Be6 17. b3 a5 18. a4 Rb8 19. Rab1 Rb4 20. Rb2 Qf6 21. Qc3 Qxc3 22. Nxc3 Bxc4 0-1

[Event "Kleve op"]
[Site "Kleve"]
[Date "1999.05.16"]
[Round "7"]
[White "Hottgenroth, Walter"]
[Black "Los, Arend"]
[Result "0-1"]
[ECO "C02"]
[PlyCount "42"]
[EventDate "1999.05.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 070 Extra"]
[Source "ChessBase"]
[SourceDate "1999.07.10"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.10"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Qb6 5. a3 Nc6 6. Nf3 Nh6 7. Be2 cxd4 8. 0-0 Bd7 9. b4 dxc3 10. Nxc3 Rc8 11. Nb5 Nxe5 12. Nxe5 Bxb5 13. Bxb5+ Qxb5 14. Bxh6 gxh6 15. Re1 Bg7 16. Nxf7 0-0 17. Ne5 Qb6 18. Ra2 Qd6 19. Rae2 Rc3 20. Qa4 Bxe5 21. Rxe5 Qxe5 0-1

[Event "Kleve op"]
[Site "Kleve"]
[Date "1999.05.16"]
[Round "6"]
[White "Los, Arend"]
[Black "Heidel, Andre Nicolas"]
[Result "0-1"]
[ECO "A28"]
[BlackElo "2085"]
[PlyCount "116"]
[EventDate "1999.05.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 070 Extra"]
[Source "ChessBase"]
[SourceDate "1999.07.10"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.10"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 g6 3. e4 e5 4. Nf3 Nc6 5. d4 exd4 6. Nxd4 Bg7 7. Bg5 h6 8. Be3 d6 9. Be2 0-0 10. Qd2 Kh7 11. 0-0 Ng4 12. Bxg4 Bxg4 13. f4 Be6 14. b3 Nxd4 15. Bxd4 f5 16. Bxg7 Kxg7 17. Qd4+ Qf6 18. Qxf6+ Kxf6 19. Nd5+ Bxd5 20. exd5 Rae8 21. Rae1 Re4 22. Rxe4 fxe4 23. Kf2 Kf5 24. Ke3 h5 25. g3 Re8 26. h3 c5 27. Rg1 Kf6 28. g4 h4 29. g5+ Kf5 30. a3 a5 31. b4 axb4 32. axb4 cxb4 33. Ra1 b3 34. Rb1 Rc8 35. Rxb3 Rxc4 36. Rxb7 Rc3+ 37. Ke2 Kxf4 38. Rf7+ Kxg5 39. Rd7 Rxh3 40. Rxd6 Rd3 41. Rd8 h3 42. d6 h2 43. Rh8 Rxd6 44. Rxh2 Rd3 45. Rh8 Kg4 46. Rf8 Rd4 47. Ke3 Ra4 48. Rg8 g5 49. Rf8 Kg3 50. Rg8 g4 51. Rg7 Ra3+ 52. Kxe4 Kh3 53. Kf4 g3 54. Rb7 Kh2 55. Rh7+ Kg1 56. Rh3 Kf2 57. Ke4 Ra4+ 58. Kd3 g2 0-1

[Event "Kleve op"]
[Site "Kleve"]
[Date "1999.05.15"]
[Round "5"]
[White "Auwens, Michiel"]
[Black "Los, Arend"]
[Result "0-1"]
[ECO "C02"]
[PlyCount "114"]
[EventDate "1999.05.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 070 Extra"]
[Source "ChessBase"]
[SourceDate "1999.07.10"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.10"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Qb6 5. Nf3 Nc6 6. Bd3 Bd7 7. Bc2 cxd4 8. cxd4 Nb4 9. 0-0 Nxc2 10. Qxc2 Ne7 11. Be3 Nf5 12. Nc3 Rc8 13. Rac1 Be7 14. Rfd1 0-0 15. Qb1 Nxe3 16. fxe3 f6 17. exf6 Bxf6 18. e4 Rc4 19. e5 Be7 20. b3 Rcc8 21. Qd3 Rfd8 22. Nb1 Be8 23. Rxc8 Rxc8 24. Qd2 Bb4 25. Qb2 Bh5 26. a3 Be7 27. Nbd2 Qa6 28. a4 Qd3 29. Qb1 Rc2 30. Rc1 Qe3+ 31. Kh1 Rxc1+ 32. Qxc1 Bxf3 33. Qc8+ Kf7 34. Nxf3 Qxb3 35. h3 Qb6 36. Qc1 Qc6 37. Qb1 g6 38. Qb3 b6 39. Qd1 Kg7 40. h4 Qc4 41. h5 b5 42. axb5 Qxb5 43. hxg6 hxg6 44. Qd2 a5 45. Ng5 Qb1+ 46. Kh2 Qf5 47. Nf3 a4 48. Qa5 a3 49. Qa7 Qf7 50. Kg1 g5 51. Nh2 Bf8 52. Qa6 Qf5 53. Qb7+ Kg6 54. g4 Qf4 55. Qb1+ Qe4 56. Qa1 Bb4 57. Qf1 Qe1 0-1

[Event "Kleve op"]
[Site "Kleve"]
[Date "1999.05.15"]
[Round "4"]
[White "Los, Arend"]
[Black "Vehreschild, Axel"]
[Result "0-1"]
[ECO "B38"]
[BlackElo "2111"]
[PlyCount "44"]
[EventDate "1999.05.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 070 Extra"]
[Source "ChessBase"]
[SourceDate "1999.07.10"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.10"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 g6 3. e4 d6 4. d4 Bg7 5. Nf3 0-0 6. Be2 c5 7. 0-0 cxd4 8. Nxd4 Nc6 9. Be3 Nxd4 10. Bxd4 Ne8 11. f4 f5 12. c5 dxc5 13. Bxc5 Qc7 14. Ba3 Bxc3 15. bxc3 fxe4 16. Qd5+ Rf7 17. Bc4 e6 18. Qxe4 Nd6 19. Bxd6 Qxd6 20. Rad1 Qe7 21. Kh1 Kg7 22. Rf3 Qf6 0-1

[Event "Kleve op"]
[Site "Kleve"]
[Date "1999.05.14"]
[Round "2"]
[White "Los, Arend"]
[Black "Schaffarth, Peter"]
[Result "1-0"]
[ECO "A84"]
[BlackElo "2183"]
[PlyCount "115"]
[EventDate "1999.05.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 070 Extra"]
[Source "ChessBase"]
[SourceDate "1999.07.10"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.10"]
[SourceQuality "1"]

1. c4 f5 2. d4 e6 3. Nc3 Nf6 4. e3 d5 5. Bd3 c6 6. Nge2 Bd6 7. Qc2 Ne4 8. Bd2 0-0 9. g3 Nd7 10. f3 Nxd2 11. Qxd2 dxc4 12. Bxc4 Nb6 13. Bd3 Bd7 14. 0-0 Qe7 15. e4 Rad8 16. e5 Bc7 17. Qe3 Bc8 18. a3 Nd5 19. Nxd5 Rxd5 20. Bc4 Rdd8 21. Rfd1 Bb6 22. b4 Kh8 23. Kg2 a6 24. Rd2 Ba7 25. Rad1 g5 26. f4 g4 27. Nc1 b6 28. Nb3 Bb7 29. Kg1 Rfe8 30. Bf1 Rc8 31. Bg2 Rc7 32. Qc3 Rec8 33. a4 c5 34. Bxb7 cxb4 35. Qd3 Rxb7 36. Qxa6 Rc3 37. Rd3 Rbc7 38. Qb5 Rxd3 39. Rxd3 Rd7 40. d5 Rxd5 41. Rxd5 exd5 42. Kf1 Qc7 43. e6 Bb8 44. Qxd5 Qd6 45. Qd4+ Kg8 46. Ke2 h5 47. Qxd6 Bxd6 48. Nd4 h4 49. Nxf5 hxg3 50. hxg3 b3 51. Kd3 Bb4 52. Nh6+ Kf8 53. Nxg4 Be1 54. f5 Ke7 55. Ne3 Bf2 56. Nd5+ Kd6 57. e7 b2 58. Kc2 1-0

[Event "Kleve op"]
[Site "Kleve"]
[Date "1999.05.14"]
[Round "3"]
[White "Van de Mortel, Jan"]
[Black "Los, Arend"]
[Result "1-0"]
[ECO "A46"]
[WhiteElo "2382"]
[PlyCount "35"]
[EventDate "1999.05.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 070 Extra"]
[Source "ChessBase"]
[SourceDate "1999.07.10"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.10"]
[SourceQuality "1"]

1. d4 e6 2. Nf3 Nf6 3. g3 c5 4. Bg2 Nc6 5. 0-0 cxd4 6. Nxd4 Qb6 7. Nb3 d5 8. Nc3 a6 9. e4 dxe4 10. Nxe4 Nxe4 11. Bxe4 Be7 12. Be3 Qc7 13. a4 b6 14. Bf4 Qd7 15. Nd4 Nxd4 16. Bxa8 0-0 17. Bg2 e5 18. Bxe5 1-0

[Event "Kleve op"]
[Site "Kleve"]
[Date "1999.05.13"]
[Round "1"]
[White "Vater, Daniel"]
[Black "Los, Arend"]
[Result "0-1"]
[ECO "D02"]
[PlyCount "62"]
[EventDate "1999.05.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 070 Extra"]
[Source "ChessBase"]
[SourceDate "1999.07.10"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.10"]
[SourceQuality "1"]

1. d4 e6 2. Bf4 Nf6 3. e3 d5 4. Nf3 c5 5. Bd3 c4 6. Be2 Nc6 7. 0-0 Bd6 8. Nc3 a6 9. a4 0-0 10. Bg5 Be7 11. Bxf6 Bxf6 12. g3 Be7 13. g4 Bb4 14. e4 Bxc3 15. bxc3 Bd7 16. a5 Nxa5 17. e5 Nc6 18. Kh1 f6 19. Rg1 fxe5 20. Nd2 exd4 21. cxd4 Nxd4 22. c3 Nxe2 23. Qxe2 Qf6 24. Rae1 Qxc3 25. g5 Qd3 26. Qh5 Qxd2 27. Rg3 Qxe1+ 28. Kg2 Rxf2+ 29. Kh3 e5+ 30. Rg4 Qe3+ 31. Kh4 Rxh2# 0-1

[Event "Utrecht Keres Memorial op"]
[Site "Utrecht"]
[Date "1999.??.??"]
[Round "3"]
[White "Freneaux, Thomas Scott"]
[Black "Los, Arend"]
[Result "1-0"]
[ECO "A85"]
[PlyCount "120"]
[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. c4 f5 3. Nc3 Nf6 4. Bg5 Be7 5. Nf3 0-0 6. e3 Ne4 7. Bxe7 Qxe7 8. Qc2 Nxc3 9. Qxc3 d6 10. Bd3 Nd7 11. Nd2 e5 12. 0-0-0 e4 13. Bc2 c5 14. Rhe1 Nf6 15. f3 Bd7 16. dxc5 dxc5 17. fxe4 fxe4 18. Nxe4 Bc6 19. Nd6 Rad8 20. Nf5 Qe6 21. Rxd8 Rxd8 22. e4 g6 23. e5 Ng4 24. Nh4 Rd4 25. Kb1 Kg7 26. Qg3 Qxc4 27. Nf3 Rd3 28. e6 Be4 29. Qc7+ Kh8 30. Qb8+ Kg7 31. Qc7+ Kh8 32. Nd2 Re3 33. Qb8+ Kg7 34. Qc7+ Kh6 35. Qf4+ Kh5 36. Nxc4 Rxe1+ 37. Qc1 Rxc1+ 38. Kxc1 Bc6 39. Bd1 Kg5 40. Bxg4 h5 41. Bh3 Kf6 42. Ne3 Be4 43. Kd2 b5 44. Nd1 g5 45. g3 g4 46. Bf1 Bc6 47. Ke3 Kxe6 48. Kf4 Kf6 49. Nc3 c4 50. Be2 a5 51. a3 Ke6 52. Ne4 Bd5 53. Ng5+ Kd6 54. Nh7 Kc5 55. Nf6 Bf7 56. Ke3 b4 57. Ne4+ Kc6 58. axb4 axb4 59. Kd2 c3+ 60. bxc3 bxc3+ 1-0

[Event "Utrecht Keres Memorial op"]
[Site "Utrecht"]
[Date "1999.??.??"]
[Round "1"]
[White "Los, Arend"]
[Black "De Jong, Tom"]
[Result "1/2-1/2"]
[ECO "E93"]
[BlackElo "2302"]
[PlyCount "108"]
[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. c4 Nf6 2. Nc3 g6 3. e4 d6 4. d4 Bg7 5. Nf3 0-0 6. Be2 e5 7. d5 Nbd7 8. Bg5 h6 9. Bh4 g5 10. Bg3 Nh5 11. Nd2 Nf4 12. 0-0 Nxe2+ 13. Qxe2 f5 14. f3 f4 15. Bf2 Rf7 16. Kh1 Bf8 17. b4 Rg7 18. Rac1 h5 19. Rfd1 g4 20. Bg1 Nf6 21. c5 g3 22. h3 Nh7 23. Nc4 Qh4 24. Rd2 Bxh3 25. gxh3 g2+ 26. Qxg2 Rxg2 27. Rxg2+ Kh8 28. Rh2 Be7 29. Bf2 Qf6 30. Nb5 dxc5 31. bxc5 c6 32. Nc7 Rg8 33. Ne6 Ng5 34. Nxg5 cxd5 35. exd5 Qxg5 36. Nd2 Qf5 37. Ne4 Rg3 38. c6 bxc6 39. dxc6 Rxf3 40. c7 Qc8 41. Bxa7 Rd3 42. Kg1 Ba3 43. Rc6 f3 44. Rhc2 Bb4 45. Kf2 Rd1 46. Rb6 Rf1+ 47. Kxf1 Qxh3+ 48. Kg1 Qg4+ 49. Kh1 Qh3+ 50. Kg1 Qg4+ 51. Kf2 Qh4+ 52. Ke3 Qe1+ 53. Kd3 Qf1+ 54. Ke3 Qe1+ 1/2-1/2

[Event "Utrecht Keres Memorial op"]
[Site "Utrecht"]
[Date "1999.??.??"]
[Round "4"]
[White "Los, Arend"]
[Black "Schuit, Edwin P"]
[Result "0-1"]
[ECO "C12"]
[PlyCount "86"]
[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 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Bb4 5. e5 h6 6. Bd2 Bxc3 7. bxc3 Ne4 8. Qg4 g6 9. h4 c5 10. Bd3 Nxd2 11. Kxd2 Nc6 12. Rh3 Qe7 13. Rf3 Rf8 14. Rb1 c4 15. Be2 b6 16. Qf4 Bd7 17. Qxh6 0-0-0 18. Nh3 f6 19. exf6 Rxf6 20. Rxf6 Qxf6 21. Qf4 Qg7 22. Bg4 e5 23. Bxd7+ Rxd7 24. dxe5 d4 25. Re1 Qe7 26. Re4 dxc3+ 27. Ke3 b5 28. Kf3 Rd5 29. Kg3 Rxe5 30. Rxe5 Nxe5 31. Qd4 b4 32. f4 Nc6 33. Qxc4 Kc7 34. Qd3 Qe6 35. Ng5 Qxa2 36. Qxg6 Qd5 37. h5 Ne7 38. Qe4 Nf5+ 39. Kg4 Nh6+ 40. Kf3 Qd1+ 41. Qe2 Qd5+ 42. Kf2 Qd4+ 43. Qe3 Ng4+ 0-1

[Event "Utrecht Keres Memorial op"]
[Site "Utrecht"]
[Date "1999.??.??"]
[Round "2"]
[White "Smeets, Jan"]
[Black "Los, Arend"]
[Result "1-0"]
[ECO "C46"]
[WhiteElo "2249"]
[PlyCount "45"]
[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 e5 2. Nf3 Nc6 3. Nc3 g6 4. d4 Bg7 5. dxe5 Nxe5 6. Nxe5 Bxe5 7. f4 Bg7 8. Bd3 d6 9. 0-0 Nh6 10. f5 Qh4 11. g3 Qh3 12. Rf4 Qh5 13. Be2 Qg5 14. Rh4 Qf6 15. Bxh6 Bxh6 16. Rxh6 Qg7 17. Qd2 Bd7 18. Rf1 g5 19. Rh5 f6 20. Nd5 0-0-0 21. Qc3 Bc6 22. Qxf6 Qxf6 23. Nxf6 1-0

[Event "Utrecht Keres Memorial op"]
[Site "Utrecht"]
[Date "1999.??.??"]
[Round "6"]
[White "Van Wagensveld, Tom"]
[Black "Los, Arend"]
[Result "1-0"]
[ECO "C27"]
[PlyCount "69"]
[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 e5 2. Nc3 Nf6 3. Bc4 Nxe4 4. Nxe4 d5 5. Bd3 dxe4 6. Bxe4 Bd6 7. Nf3 0-0 8. 0-0 c6 9. d4 exd4 10. Qxd4 Be7 11. Qc3 Bf6 12. Qb3 Na6 13. Be3 Qe7 14. Bd3 Nc5 15. Bxc5 Qxc5 16. c3 g6 17. Rfe1 Be6 18. Qc2 Rfd8 19. Nd2 Bg7 20. Ne4 Qd5 21. Rad1 b6 22. Be2 Qxa2 23. Bf3 Qb3 24. Qc1 Bd5 25. Qg5 h6 26. Nf6+ Kh8 27. Qf4 Bxf3 28. Rxd8+ Rxd8 29. Qxf3 Qb5 30. h3 Qf5 31. Qxf5 gxf5 32. Nh5 Bf8 33. Ng3 Rd5 34. Re8 Kg7 35. Nh5+ 1-0

[Event "Soest op"]
[Site "Soest"]
[Date "1998.??.??"]
[Round "?"]
[White "De Haas, Piet"]
[Black "Los, Arend"]
[Result "1-0"]
[ECO "C09"]
[PlyCount "127"]
[EventDate "1998.06.??"]
[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 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 5. Ngf3 Nc6 6. Bb5 Bd6 7. 0-0 Nge7 8. dxc5 Bxc5 9. Nb3 Bd6 10. Nbd4 0-0 11. Be3 a6 12. Bd3 Ng6 13. c3 Nce5 14. Bf5 Nxf3+ 15. Qxf3 Nh4 16. Qh3 Nxf5 17. Nxf5 Qf6 18. g4 Bxf5 19. gxf5 Rfe8 20. f4 Rac8 21. Kh1 Bc5 22. Bxc5 Rxc5 23. Rae1 Re4 24. Rxe4 dxe4 25. Re1 Qd8 26. Qe3 Qd5 27. Qxe4 Kf8 28. f6 gxf6 29. Kg2 Rb5 30. Qxd5 Rxd5 31. Kf3 a5 32. c4 Rd2 33. Re2 Rd1 34. b3 Rc1 35. Ke4 a4 36. Kf5 a3 37. Kxf6 Rf1 38. f5 Rf3 39. h4 Rf1 40. h5 Rh1 41. Re7 Rxh5 42. Rxf7+ Ke8 43. Rxb7 Rh2 44. Ra7 Rxa2 45. Rxh7 Ra1 46. Ra7 a2 47. c5 Kd8 48. c6 Rc1 49. Rxa2 Rxc6+ 50. Kg5 Rc3 51. Rb2 Ke7 52. b4 Rg3+ 53. Kf4 Rg1 54. Re2+ Kf6 55. Re6+ Kf7 56. b5 Rf1+ 57. Ke5 Re1+ 58. Kd6 Rb1 59. Kc6 Rc1+ 60. Kb7 Rf1 61. Re5 Kf6 62. Rc5 Rh1 63. b6 Rh7+ 64. Ka6 1-0

[Event "Soest op"]
[Site "Soest"]
[Date "1998.??.??"]
[Round "?"]
[White "Los, Arend"]
[Black "Cornelisse, Johnny JA"]
[Result "1/2-1/2"]
[ECO "A40"]
[WhiteElo "1835"]
[BlackElo "1915"]
[PlyCount "93"]
[EventDate "1998.06.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. c4 g6 2. Nf3 Bg7 3. d4 c5 4. d5 b5 5. e4 d6 6. cxb5 a6 7. bxa6 Nf6 8. Qc2 Bxa6 9. Bxa6 Nxa6 10. Bd2 0-0 11. 0-0 Qb6 12. Na3 Nb4 13. Bxb4 Qxb4 14. Nc4 Rfb8 15. Nfd2 Ng4 16. a3 Qa4 17. b3 Qa6 18. Rab1 Ne5 19. a4 Rb4 20. Nxe5 Bxe5 21. Nc4 Bd4 22. Na3 e6 23. Nb5 Bg7 24. dxe6 fxe6 25. Nc7 Qc8 26. Nxa8 Qxa8 27. Rfe1 Bd4 28. Re2 e5 29. Kf1 Kg7 30. Rd1 Qb7 31. Rd3 Qa6 32. Qd2 Rb7 33. Rh3 Kg8 34. Qg5 Rf7 35. Ke1 Qa5+ 36. Qd2 Qa6 37. Rd3 Rb7 38. h4 c4 39. Rxd4 exd4 40. Qxd4 cxb3 41. Rb2 Qa5+ 42. Ke2 Rb4 43. Qd5+ Qxd5 44. exd5 Rxa4 45. Rxb3 Rd4 46. Rb6 Rxd5 47. Ke3 1/2-1/2

[Event "Soest op"]
[Site "Soest"]
[Date "1998.??.??"]
[Round "?"]
[White "Los, Arend"]
[Black "Spronk, Hans"]
[Result "1-0"]
[ECO "D40"]
[WhiteElo "1835"]
[PlyCount "41"]
[EventDate "1998.06.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. c4 c5 2. Nf3 Nf6 3. d4 d5 4. e3 e6 5. Nc3 Nc6 6. b3 b6 7. Bb2 Bb7 8. cxd5 cxd4 9. dxc6 d3 10. cxb7 Rb8 11. Bxd3 Bb4 12. Bb5+ Nd7 13. Qd4 e5 14. Qxb4 Rxb7 15. Nxe5 Qf6 16. Nd5 Qe6 17. Nxd7 Qxd5 18. Nf6+ Kd8 19. Nxd5 a5 20. Qd6+ Rd7 21. Qxd7# 1-0

[Event "Soest op"]
[Site "Soest"]
[Date "1998.??.??"]
[Round "?"]
[White "Van de Velden, Eddy"]
[Black "Los, Arend"]
[Result "1-0"]
[ECO "C02"]
[WhiteElo "1850"]
[BlackElo "1835"]
[PlyCount "87"]
[EventDate "1998.06.??"]
[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 e6 2. d4 d5 3. e5 c5 4. c3 Qb6 5. Nf3 Nc6 6. Bd3 cxd4 7. cxd4 Bd7 8. 0-0 Nxd4 9. Nxd4 Qxd4 10. Nc3 Ne7 11. Nb5 Qxe5 12. Re1 Qb8 13. Qf3 Bxb5 14. Bxb5+ Nc6 15. Qxd5 Qd6 16. Qf3 Rc8 17. Bf4 Qb4 18. Bxc6+ bxc6 19. Be5 Qa5 20. a3 Qd5 21. Qc3 Rd8 22. g3 Bc5 23. Rad1 Qxd1 24. Rxd1 Rxd1+ 25. Kg2 Bb6 26. Bxg7 Rg8 27. Qxc6+ Ke7 28. Bf6+ Kxf6 29. Qf3+ Ke7 30. Qxd1 Rd8 31. Qh5 Rd5 32. Qxh7 Rf5 33. Qh4+ Kd7 34. g4 Rf4 35. Qg3 e5 36. h4 Ke6 37. Qb3+ Kf6 38. f3 Rd4 39. Qc2 Rf4 40. Qc6+ Kg7 41. h5 Rd4 42. h6+ Kh7 43. Qf6 Rd2+ 44. Kh3 1-0

[Event "Haarlem AKN op 06th"]
[Site "Haarlem"]
[Date "1997.??.??"]
[Round "4"]
[White "Happel, Henk"]
[Black "Los, Arend"]
[Result "1-0"]
[ECO "A67"]
[WhiteElo "2215"]
[PlyCount "47"]
[EventDate "1997.06.26"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. d4 e6 2. c4 Nf6 3. Nc3 c5 4. d5 exd5 5. cxd5 d6 6. e4 g6 7. f4 Bg7 8. Bb5+ Nfd7 9. Nf3 a6 10. Bd3 0-0 11. 0-0 b5 12. Kh1 Re8 13. Qe1 b4 14. Ne2 Nf6 15. Qh4 Nbd7 16. Ng3 Qc7 17. f5 c4 18. Bc2 Ne5 19. Nxe5 Rxe5 20. Be3 gxf5 21. Bd4 Ng4 22. exf5 Ne3 23. Bxe3 Rxe3 24. f6 1-0

[Event "Haarlem AKN op 06th"]
[Site "Haarlem"]
[Date "1997.??.??"]
[Round "3"]
[White "Los, Arend"]
[Black "Lacrosse, Marc"]
[Result "1/2-1/2"]
[ECO "C29"]
[WhiteElo "1770"]
[BlackElo "2205"]
[PlyCount "57"]
[EventDate "1997.06.26"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 e5 2. Nc3 Nf6 3. f4 d5 4. fxe5 Nxe4 5. Nf3 Be7 6. d4 0-0 7. Bd3 f5 8. exf6 Bxf6 9. 0-0 Re8 10. Ne2 Bg4 11. c3 c6 12. Nf4 Nd7 13. h3 Bf5 14. Nh5 Bg6 15. Nxf6+ Ndxf6 16. Ne5 Qb6 17. Kh2 Re6 18. Qc2 Rf8 19. b3 Qd8 20. Ba3 Rfe8 21. Rad1 Qc7 22. Bb2 Nd7 23. c4 Nxe5 24. dxe5 Rxe5 25. Bxe5 Qxe5+ 26. Kg1 Qd4+ 27. Kh2 Qe5+ 28. Kg1 Qd4+ 29. Kh2 1/2-1/2

[Event "Haarlem AKN op 06th"]
[Site "Haarlem"]
[Date "1997.??.??"]
[Round "1"]
[White "Los, Arend"]
[Black "Milli, Serkan"]
[Result "1-0"]
[ECO "B06"]
[PlyCount "31"]
[EventDate "1997.06.26"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nc3 d6 4. Be3 a6 5. Qd2 Nd7 6. Nf3 Ngf6 7. h3 0-0 8. e5 dxe5 9. dxe5 Ne8 10. e6 fxe6 11. Ng5 Nd6 12. Nxe6 Qe8 13. Nxc7 Qf7 14. Nxa8 Bxc3 15. Qxc3 Ne4 16. Qc4 1-0

[Event "Haarlem AKN op 06th"]
[Site "Haarlem"]
[Date "1997.??.??"]
[Round "5"]
[White "Los, Arend"]
[Black "Werle, Jan"]
[Result "0-1"]
[ECO "E91"]
[PlyCount "116"]
[EventDate "1997.06.26"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. d4 0-0 6. Be2 Nc6 7. Bf4 Nh5 8. Be3 e6 9. g4 Nf6 10. h3 e5 11. d5 Ne7 12. Qd2 Ne8 13. Bh6 a6 14. 0-0-0 Bd7 15. Rdg1 Bxh6 16. Qxh6 f6 17. h4 Rf7 18. g5 f5 19. h5 Rg7 20. Nh4 f4 21. hxg6 hxg6 22. Nf3 c5 23. Qh8+ Kf7 24. Rh7 Rxh7 25. Qxh7+ Ng7 26. Nh4 Rb8 27. Nxg6 Qg8 28. Qxg8+ Nxg8 29. Nh4 Ne7 30. Bg4 Bxg4 31. Rxg4 Rh8 32. Kd2 Ng6 33. Nf5 Nxf5 34. exf5 Nh4 35. g6+ Kg7 36. f6+ Kxf6 37. g7 Nf3+ 38. Kd3 Rg8 39. Ne4+ Kf5 40. a3 b6 41. a4 Ne1+ 42. Ke2 Kxe4 43. Kxe1 Kf5 44. Rg1 Kf6 45. Ke2 Rxg7 46. Rxg7 Kxg7 47. Kf3 Kf6 48. Kg4 Kg6 49. f3 Kf6 50. Kh3 Kf5 51. Kg2 e4 52. Kf2 e3+ 53. Ke2 a5 54. b3 Kg5 55. Kf1 Kh4 56. Kg2 e2 57. Kf2 Kh3 58. Kxe2 Kg2 0-1

[Event "Haarlem AKN op 06th"]
[Site "Haarlem"]
[Date "1997.??.??"]
[Round "2"]
[White "Straat, Evert Jan"]
[Black "Los, Arend"]
[Result "1/2-1/2"]
[ECO "A32"]
[WhiteElo "2210"]
[PlyCount "43"]
[EventDate "1997.06.26"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. g3 cxd4 5. Nxd4 Nc6 6. Bg2 Bc5 7. Nb5 0-0 8. N1c3 Ne5 9. b3 Qa5 10. Bd2 Qb6 11. Na4 Bxf2+ 12. Kf1 Qd8 13. Kxf2 Neg4+ 14. Kg1 d5 15. h3 a6 16. hxg4 axb5 17. cxb5 Nxg4 18. Bc3 Bd7 19. Bf3 Qc7 20. Bxg4 Qxg3+ 21. Kf1 Qxg4 22. Qd4 1/2-1/2

[Event "Haarlem AKN op 06th"]
[Site "Haarlem"]
[Date "1997.??.??"]
[Round "6"]
[White "Stuifbergen, Jan"]
[Black "Los, Arend"]
[Result "1-0"]
[ECO "A08"]
[PlyCount "33"]
[EventDate "1997.06.26"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 e6 2. d3 d5 3. Nd2 c5 4. Ngf3 Nc6 5. g3 Bd6 6. Bg2 Nge7 7. 0-0 0-0 8. Re1 Qc7 9. c3 Bd7 10. Qe2 f6 11. a3 Rfd8 12. Nf1 Rac8 13. h4 dxe4 14. dxe4 e5 15. Ne3 Na5 16. Kh2 Nb3 17. Qc4+ 1-0

[Event "Haarlem AKN op 05th"]
[Site "Haarlem"]
[Date "1996.??.??"]
[Round "6"]
[White "De Bruijn, Aad"]
[Black "Los, Arend"]
[Result "0-1"]
[ECO "A00"]
[PlyCount "64"]
[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. Nc3 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Nf6 5. Bf4 Bc5 6. Nxc6 bxc6 7. e3 0-0 8. Bd3 d5 9. Bg5 Re8 10. Qf3 Be7 11. 0-0 Ne4 12. Bxe7 Qxe7 13. Bxe4 dxe4 14. Qf4 Rb8 15. b3 f5 16. Rfd1 g5 17. Qg3 Qg7 18. Na4 Rb5 19. c4 Rbe5 20. h4 h6 21. Re1 Rf8 22. hxg5 hxg5 23. f4 Re6 24. Rad1 Rg6 25. Qf2 Rh6 26. Kf1 gxf4 27. exf4 Qg4 28. Qe3 Rh2 29. Rd2 Rh1+ 30. Kf2 Qh4+ 31. Qg3+ Qxg3+ 32. Kxg3 Rxe1 0-1

[Event "Haarlem AKN op 05th"]
[Site "Haarlem"]
[Date "1996.??.??"]
[Round "2"]
[White "De Vries, Wijbren"]
[Black "Los, Arend"]
[Result "0-1"]
[ECO "D02"]
[PlyCount "44"]
[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. Bf4 d5 3. Nf3 Bf5 4. c4 e6 5. e3 Bb4+ 6. Nc3 0-0 7. a3 Bxc3+ 8. bxc3 c5 9. Be2 cxd4 10. exd4 dxc4 11. Bxc4 Nd5 12. Bxd5 Qxd5 13. 0-0 Nd7 14. Bg5 h6 15. Bh4 Rfc8 16. Qe1 Bd3 17. Rc1 Bxf1 18. Qxf1 Rc4 19. Nd2 Ra4 20. Be7 Re8 21. Bb4 a5 22. Qd1 Qc6 0-1

[Event "Haarlem AKN op 05th"]
[Site "Haarlem"]
[Date "1996.??.??"]
[Round "4"]
[White "Leenhouts, Veerle"]
[Black "Los, Arend"]
[Result "0-1"]
[ECO "D94"]
[PlyCount "80"]
[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 d5 4. Nf3 Bg7 5. e3 0-0 6. Bd3 c5 7. 0-0 cxd4 8. Nxd4 e5 9. Nb3 Nc6 10. cxd5 Nxd5 11. Bd2 Nf6 12. Bc4 e4 13. Qb1 Bf5 14. Rd1 Re8 15. Be1 Qe7 16. Nb5 Rad8 17. Qc2 Ng4 18. Nc5 a6 19. Nxb7 Rxd1 20. Rxd1 axb5 21. Bxb5 Qxb7 22. Bxc6 Qc7 23. Qa4 Rb8 24. g3 Ne5 25. Bxe4 Bg4 26. Ba5 Qe7 27. Rb1 Nf3+ 28. Bxf3 Bxf3 29. Qf4 Qb7 30. b4 Rc8 31. Re1 Bd5 32. e4 Bxa2 33. Qd6 Be6 34. Qb6 Qd7 35. Qe3 Rc2 36. Qb6 Bd4 37. Qb8+ Kg7 38. Bb6 Rxf2 39. Bxd4+ Qxd4 40. Kh1 Bg4 0-1

[Event "Haarlem AKN op 05th"]
[Site "Haarlem"]
[Date "1996.??.??"]
[Round "3"]
[White "Los, Arend"]
[Black "Doggers, Peter"]
[Result "0-1"]
[ECO "E92"]
[PlyCount "90"]
[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 0-0 5. Nf3 d6 6. Be2 e5 7. d5 a5 8. Bg5 h6 9. Bh4 Na6 10. Nd2 Qe8 11. 0-0 Nh7 12. a3 Bd7 13. b3 h5 14. f3 Bh6 15. Rb1 Be3+ 16. Bf2 Bxf2+ 17. Rxf2 Qb8 18. b4 axb4 19. axb4 Qa7 20. Nb5 Qb6 21. Qc1 f5 22. c5 dxc5 23. Nc4 Qf6 24. bxc5 Nxc5 25. Qe3 Na6 26. exf5 Bxf5 27. Rc1 Rfe8 28. Nd2 Qe7 29. Ne4 Rad8 30. Bc4 Kg7 31. Rd2 Bxe4 32. Qxe4 Qc5+ 33. Kf1 Nf6 34. Qb1 c6 35. Bd3 Qxd5 36. Nc3 Qf7 37. Rcd1 Nc5 38. Bxg6 Qc4+ 39. Ne2 Rxd2 40. Rxd2 Re7 41. Rc2 Qd5 42. Ng3 Rd7 43. Rc1 Nb3 44. Nf5+ Kh8 45. Ne3 Qb5+ 0-1

[Event "Haarlem AKN op 05th"]
[Site "Haarlem"]
[Date "1996.??.??"]
[Round "1"]
[White "Los, Arend"]
[Black "Lacrosse, Marc"]
[Result "0-1"]
[ECO "C29"]
[BlackElo "2220"]
[PlyCount "63"]
[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 e5 2. Nc3 Nf6 3. f4 d5 4. fxe5 Nxe4 5. Nf3 Be7 6. d4 f6 7. exf6 Bxf6 8. Bd3 0-0 9. 0-0 Bf5 10. Qe1 Re8 11. Ne5 Bg6 12. Nxg6 Bxd4+ 13. Be3 Bxc3 14. bxc3 hxg6 15. Rf3 Nc6 16. Rd1 Qe7 17. Bb5 a6 18. Bxc6 bxc6 19. c4 Rad8 20. Qa5 Nd6 21. Bc5 Qe2 22. Rdf1 Qxc4 23. Bxd6 Rxd6 24. Qxc7 Rf6 25. Qd7 Qc5+ 26. Kh1 Qe7 27. Qg4 Qe4 28. Qd7 Qe6 29. Qa7 Rxf3 30. gxf3 Qe2 31. Qg1 Qxc2 32. Qxg6 0-1

[Event "Haarlem AKN op 05th"]
[Site "Haarlem"]
[Date "1996.??.??"]
[Round "5"]
[White "Los, Arend"]
[Black "Maas, Joop"]
[Result "1/2-1/2"]
[ECO "C25"]
[PlyCount "50"]
[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 e5 2. Nc3 Nc6 3. Bc4 Bc5 4. f4 Bxg1 5. Rxg1 Qh4+ 6. g3 Qxh2 7. Kf1 d6 8. f5 Nf6 9. d3 h5 10. Rg2 Qh1+ 11. Rg1 Qh2 12. Bg5 Ng4 13. Qe2 Qxe2+ 14. Nxe2 f6 15. Bd2 Bd7 16. Rh1 0-0-0 17. Bf7 Be8 18. Bxe8 Rdxe8 19. c4 Nd4 20. Nxd4 exd4 21. Ke2 c5 22. Rh4 Rh7 23. Rah1 Reh8 24. Bf4 Kd7 25. Rb1 b6 1/2-1/2

[Event "Leeuwarden op"]
[Site "Leeuwarden"]
[Date "1995.??.??"]
[Round "7"]
[White "Los, Arend"]
[Black "Norder, J."]
[Result "1-0"]
[ECO "B00"]
[PlyCount "31"]
[EventDate "1995.08.??"]
[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 Nc6 2. d4 d5 3. Nc3 dxe4 4. d5 Ne5 5. Bf4 f6 6. Bxe5 fxe5 7. Qh5+ g6 8. Qxe5 Nf6 9. Nb5 Kd7 10. Nxa7 Ke8 11. Nb5 Kd7 12. g3 Ra5 13. Bh3+ Ke8 14. Nxc7+ Kf7 15. Be6+ Bxe6 16. dxe6+ 1-0

[Event "Zwolle op-B"]
[Site "Zwolle"]
[Date "1995.??.??"]
[Round "3"]
[White "Los, Arend"]
[Black "Van de Laar, John"]
[Result "0-1"]
[ECO "C68"]
[PlyCount "32"]
[EventDate "1995.??.??"]
[EventType "swiss"]
[EventRounds "6"]
[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 Bg4 6. h3 h5 7. d3 Qf6 8. Nbd2 Ne7 9. Re1 Ng6 10. hxg4 hxg4 11. Nh2 Bc5 12. Nhf3 Nf4 13. Nf1 gxf3 14. Bxf4 Qh4 15. Ng3 Qh2+ 16. Kf1 Qxg2# 0-1

[Event "Haarlem AKN op 03rd"]
[Site "Haarlem"]
[Date "1994.??.??"]
[Round "3"]
[White "Burer, Audry"]
[Black "Los, Arend"]
[Result "1-0"]
[ECO "B52"]
[PlyCount "37"]
[EventDate "1994.07.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Nxd7 5. 0-0 Ngf6 6. Qe2 e5 7. c3 Be7 8. d4 0-0 9. Rd1 a6 10. dxe5 dxe5 11. Nxe5 Qc7 12. Nxd7 Nxd7 13. Nd2 b5 14. Nf3 c4 15. Be3 Rad8 16. a4 Bc5 17. axb5 axb5 18. Rd5 Bxe3 19. Qxe3 1-0

[Event "Haarlem AKN op 03rd"]
[Site "Haarlem"]
[Date "1994.??.??"]
[Round "1"]
[White "Engelberts, Martijn"]
[Black "Los, Arend"]
[Result "1-0"]
[ECO "B38"]
[PlyCount "65"]
[EventDate "1994.07.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 c5 2. Ne2 d6 3. c4 Nc6 4. d4 cxd4 5. Nxd4 g6 6. Nc3 Bg7 7. Be3 Nf6 8. Be2 0-0 9. 0-0 Bd7 10. Kh1 Qc8 11. f3 Rb8 12. Rc1 a6 13. Nd5 Qd8 14. Nb3 b5 15. c5 dxc5 16. Nxc5 Nxd5 17. Qxd5 Be8 18. Nxa6 Rb7 19. Rxc6 Bxc6 20. Qxc6 Qc8 21. Qxc8 Rxc8 22. Nc5 Rbc7 23. b4 Ra8 24. Rd1 Bc3 25. Bxb5 Rxa2 26. Bc4 Ra8 27. Bd5 Ra3 28. b5 Ba5 29. Nb3 e6 30. b6 Bxb6 31. Bxb6 Rd7 32. Nc5 Rd6 33. Bc7 1-0

[Event "Haarlem AKN op 03rd"]
[Site "Haarlem"]
[Date "1994.??.??"]
[Round "2"]
[White "Los, Arend"]
[Black "Bouwens, Harko"]
[Result "0-1"]
[ECO "B89"]
[PlyCount "48"]
[EventDate "1994.07.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bc4 e6 7. Be3 Be7 8. Qe2 0-0 9. 0-0-0 a6 10. Rhg1 Qc7 11. Bb3 b5 12. g4 b4 13. g5 bxc3 14. gxf6 cxb2+ 15. Kb1 Bxf6 16. Nxc6 Qxc6 17. Bh6 Kh8 18. Bxg7+ Bxg7 19. Rxg7 Kxg7 20. Qg4+ Kh8 21. Rg1 Qc3 22. f4 Bd7 23. Rd1 a5 24. a4 Bxa4 0-1

[Event "Haarlem AKN op 03rd"]
[Site "Haarlem"]
[Date "1994.??.??"]
[Round "6"]
[White "Los, Arend"]
[Black "Woestenburg, Jochem"]
[Result "0-1"]
[ECO "B89"]
[PlyCount "50"]
[EventDate "1994.07.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bc4 e6 7. Be3 Be7 8. Qe2 0-0 9. 0-0-0 Qc7 10. Bb3 a6 11. Rhg1 Na5 12. g4 Nxb3+ 13. cxb3 Nxe4 14. Rd3 Nc5 15. Rd2 b5 16. Kb1 Bd7 17. b4 Na4 18. Ne4 Qb7 19. Qf3 d5 20. Ng5 Nb6 21. Qh3 Bxg5 22. Bxg5 Nc4 23. Rd3 Qb6 24. Bf6 e5 25. g5 Bxh3 0-1

[Event "Haarlem AKN op 03rd"]
[Site "Haarlem"]
[Date "1994.??.??"]
[Round "4"]
[White "Seuninga, B."]
[Black "Los, Arend"]
[Result "1-0"]
[ECO "B90"]
[PlyCount "23"]
[EventDate "1994.07.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 Nf6 6. Bc4 b5 7. Bb3 Bb7 8. 0-0 Nxe4 9. Qf3 d5 10. Nxe4 dxe4 11. Bxf7+ Kd7 12. Qf5+ 1-0

[Event "Haarlem AKN op 03rd"]
[Site "Haarlem"]
[Date "1994.??.??"]
[Round "5"]
[White "Tuijp, Paul"]
[Black "Los, Arend"]
[Result "1/2-1/2"]
[ECO "B99"]
[PlyCount "69"]
[EventDate "1994.07.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[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 Qc7 9. 0-0-0 Nbd7 10. g4 b5 11. Bxf6 gxf6 12. h4 Bb7 13. g5 0-0-0 14. Bxb5 axb5 15. Ncxb5 Qb6 16. Rhe1 fxg5 17. hxg5 Kb8 18. Na3 Rc8 19. Qh5 d5 20. Nab5 Rcf8 21. exd5 Bxd5 22. Nc3 Bd6 23. Nxd5 exd5 24. Qg4 Nc5 25. Qf5 Na4 26. Nb3 Rd8 27. Rxd5 Qf2 28. Red1 Qxf4+ 29. Qxf4 Bxf4+ 30. Kb1 Rxd5 31. Rxd5 Re8 32. a3 Nb6 33. Rf5 Be3 34. Rxf7 Bxg5 35. Rxh7 1/2-1/2

