[Event "GER-chT U20"]
[Site "Osnabrueck"]
[Date "2012.12.29"]
[Round "6.5"]
[White "Lebeda, Timo"]
[Black "Wierum, Colin"]
[Result "1-0"]
[ECO "A87"]
[WhiteElo "2033"]
[BlackElo "1824"]
[PlyCount "77"]
[EventDate "2012.12.27"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]
[WhiteTeam "Bebenhausen"]
[BlackTeam "Hagen"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. c4 f5 2. Nf3 Nf6 3. Nc3 g6 4. g3 Bg7 5. Bg2 0-0 6. 0-0 d6 7. d4 Qe8 8. Qb3 Nc6 9. Nb5 Qd7 10. c5+ Kh8 11. d5 Nd8 12. cxd6 exd6 13. Be3 c6 14. Nxa7 Nxd5 15. Nxc8 Rxc8 16. Bd4 Re8 17. e3 Nc7 18. Rfd1 d5 19. h4 Nce6 20. Bxg7+ Qxg7 21. Qc2 Nf7 22. b4 Nd6 23. a4 Re7 24. Qb3 Ne4 25. Nd4 h6 26. Rac1 Nxd4 27. Rxd4 g5 28. hxg5 Qxg5 29. Rxd5 Rce8 30. Rd3 h5 31. Bxe4 Rxe4 32. Kg2 f4 33. exf4 Rxf4 34. Rc5 Rf5 35. Rxf5 Qxf5 36. Rf3 Qg4 37. Qf7 Re4 38. Qf8+ Kh7 39. Rf7+ 1-0

[Event "GER-chT U20"]
[Site "Osnabrueck"]
[Date "2012.12.29"]
[Round "5.5"]
[White "Shishkov, Mark"]
[Black "Wierum, Colin"]
[Result "0-1"]
[ECO "B39"]
[WhiteElo "1885"]
[BlackElo "1824"]
[PlyCount "76"]
[EventDate "2012.12.27"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]
[WhiteTeam "Solingen"]
[BlackTeam "Hagen"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. d4 g6 2. c4 Bg7 3. e4 c5 4. Nf3 cxd4 5. Nxd4 Nc6 6. Be3 Nf6 7. Nc3 Ng4 8. Nxc6 Nxe3 9. Nxd8 Nxd1 10. Rxd1 Bxc3+ 11. bxc3 Kxd8 12. g3 Kc7 13. e5 d6 14. exd6+ exd6 15. Bg2 Re8+ 16. Kd2 Be6 17. Rb1 Rab8 18. Rhe1 b6 19. Bd5 Bxd5 20. cxd5 Kd7 21. Kd3 Rxe1 22. Rxe1 Re8 23. Rxe8 Kxe8 24. Kc4 a6 25. h4 h5 26. Kb4 Ke7 27. a4 Kf6 28. c4 Ke5 29. f3 Kd4 30. g4 f6 31. a5 bxa5+ 32. Kxa5 Kxc4 33. Kxa6 Kxd5 34. Kb5 Ke5 35. Kc4 Kf4 36. gxh5 gxh5 37. Kd5 Kxf3 38. Kxd6 Kg4 0-1

[Event "GER-chT U20"]
[Site "Osnabrueck"]
[Date "2012.12.28"]
[Round "4.6"]
[White "Denkert, Robert"]
[Black "Wierum, Colin"]
[Result "1-0"]
[ECO "B26"]
[WhiteElo "1637"]
[BlackElo "1824"]
[PlyCount "77"]
[EventDate "2012.12.27"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]
[WhiteTeam "Berlin Empor"]
[BlackTeam "Hagen"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 c5 2. Nc3 g6 3. g3 Bg7 4. Bg2 Nc6 5. Nge2 Nf6 6. d3 0-0 7. 0-0 d6 8. h3 Rb8 9. Be3 b5 10. d4 cxd4 11. Nxd4 Nxd4 12. Bxd4 a5 13. e5 Nd7 14. Ba7 b4 15. Bxb8 bxc3 16. Ba7 cxb2 17. Rb1 Nxe5 18. Bd4 Ba6 19. Re1 Nc4 20. Bxg7 Kxg7 21. Bf1 Qc7 22. Bxc4 Bxc4 23. Rxb2 e6 24. Qd2 Bd5 25. Rc1 Qc6 26. c4 Rc8 27. Qxa5 Bg2 28. Rb6 Qe4 29. Re1 Qf3 30. Re3 Qa8 31. Ra6 Qb7 32. Ra7 Qc6 33. Qc3+ Kg8 34. g4 Rb8 35. f3 Qb6 36. Ra3 Qb1+ 37. Kxg2 Rb2+ 38. Kg3 e5 39. Re1 1-0

[Event "GER-chT U20"]
[Site "Osnabrueck"]
[Date "2012.12.28"]
[Round "3.5"]
[White "Luzius, Jannik"]
[Black "Wierum, Colin"]
[Result "0-1"]
[ECO "A36"]
[WhiteElo "1519"]
[BlackElo "1824"]
[PlyCount "114"]
[EventDate "2012.12.27"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]
[WhiteTeam "Heidesheim"]
[BlackTeam "Hagen"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. c4 g6 2. g3 Bg7 3. Bg2 c5 4. Nc3 Nc6 5. d3 e5 6. Rb1 Nge7 7. e3 0-0 8. Nge2 d6 9. 0-0 Be6 10. a3 d5 11. b3 b6 12. Bb2 Qd7 13. cxd5 Nxd5 14. Nxd5 Bxd5 15. Bxd5 Qxd5 16. Nc3 Qe6 17. Qc2 Rad8 18. Rbd1 f5 19. Ne2 Rd6 20. Qc4 Kf7 21. Qxe6+ Kxe6 22. Rd2 Rfd8 23. Rfd1 Na5 24. Nc1 c4 25. b4 Nc6 26. Bc3 cxd3 27. Rxd3 Rxd3 28. Rxd3 Rxd3 29. Nxd3 Kd5 30. Nb2 Bf8 31. f4 exf4 32. exf4 a5 33. bxa5 bxa5 34. a4 Bb4 35. Bf6 Nd4 36. h3 Ba3 37. Nd1 Nc6 38. Nc3+ Kc4 39. Kf1 Bb2 40. Nd5 Bxf6 41. Nxf6 Kb3 42. Nxh7 Kxa4 43. Ng5 Kb4 44. Nf3 a4 45. Ke2 a3 46. Ne1 a2 47. Nc2+ Kc3 48. Kd1 Nb4 49. Na1 Nd5 50. Ke2 Kb2 51. Kd2 Nf6 52. Kd3 Ne4 53. g4 fxg4 54. hxg4 Nf2+ 55. Ke2 Nxg4 56. Nc2 Nf6 57. Kd3 Nd5 0-1

[Event "GER-chT U20"]
[Site "Osnabrueck"]
[Date "2012.12.27"]
[Round "1.5"]
[White "Mauch, Johannes"]
[Black "Wierum, Colin"]
[Result "0-1"]
[ECO "A38"]
[WhiteElo "1580"]
[BlackElo "1824"]
[PlyCount "96"]
[EventDate "2012.12.27"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]
[WhiteTeam "Jena Schott"]
[BlackTeam "Hagen"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. Nf3 g6 2. g3 Bg7 3. Bg2 Nf6 4. 0-0 0-0 5. d3 c5 6. c4 Nc6 7. Nc3 d6 8. Rb1 Bd7 9. a3 a5 10. Re1 Ne8 11. e3 Nc7 12. d4 Bf5 13. e4 Bg4 14. d5 Ne5 15. Qe2 f5 16. exf5 Rxf5 17. Bf4 Qf8 18. Ne4 Nxf3+ 19. Bxf3 Bxf3 20. Qxf3 g5 21. Nxg5 Rxg5 22. Qe4 Rg6 23. Bd2 Bf6 24. Bc3 Rg7 25. Re3 b5 26. b4 axb4 27. axb4 cxb4 28. Rxb4 Bxc3 29. Rxc3 Qf6 30. Rc2 Qg6 31. Qe2 bxc4 32. Rcxc4 Na6 33. Rb7 Nc5 34. Rxe7 Rxe7 35. Qxe7 Re8 36. Qh4 Qf5 37. Rg4+ Kh8 38. Rf4 Re1+ 39. Kg2 Qxd5+ 40. Kh3 Qe6+ 41. Rg4 Qe7 42. Qh6 Nd7 43. Qd2 Nf6 44. Rg5 Re2 45. Qd4 Qe6+ 46. g4 Re4 47. Qb2 Re5 48. f4 Rxg5 0-1

[Event "GER-chT U20"]
[Site "Osnabrueck"]
[Date "2012.12.27"]
[Round "2.5"]
[White "Wierum, Colin"]
[Black "Groetzbach, Julian"]
[Result "0-1"]
[ECO "B50"]
[WhiteElo "1824"]
[BlackElo "2019"]
[PlyCount "62"]
[EventDate "2012.12.27"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]
[WhiteTeam "Hagen"]
[BlackTeam "Hamburger SK"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 c5 2. Nf3 d6 3. g3 Nf6 4. Nc3 e6 5. Bg2 Be7 6. 0-0 0-0 7. d3 Nc6 8. Qe2 Rb8 9. a4 a6 10. Nd1 b5 11. axb5 axb5 12. c3 Bb7 13. Ng5 Na5 14. Be3 c4 15. f4 h6 16. Nf3 cxd3 17. Qxd3 Bxe4 18. Qe2 Bd5 19. Nd2 Bxg2 20. Qxg2 Nc4 21. Nxc4 bxc4 22. g4 Ra8 23. Rc1 Ra5 24. g5 hxg5 25. fxg5 Nd5 26. h4 Nxe3 27. Nxe3 Qb6 28. Rf3 Re5 29. Qf2 d5 30. Nc2 Bc5 31. Nd4 Re4 0-1

[Event "GER-chT Nord-West U20 1112"]
[Site "Germany"]
[Date "2012.01.21"]
[Round "3"]
[White "Raider, Eugen"]
[Black "Wierum, Colin"]
[Result "1-0"]
[ECO "A00"]
[WhiteElo "1835"]
[BlackElo "1979"]
[PlyCount "68"]
[EventDate "2011.09.24"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. Nc3 g6 2. d3 Bg7 3. Bd2 c5 4. Qc1 Nc6 5. g3 d6 6. e4 e6 7. h4 h5 8. Bg2 Rb8 9. Nh3 b5 10. Nd1 b4 11. f4 Nge7 12. Ne3 a5 13. 0-0 a4 14. c3 bxc3 15. bxc3 d5 16. f5 exf5 17. Nxd5 0-0 18. Bh6 fxe4 19. Nf6+ Kh8 20. Qg5 Bg4 21. Bxg7+ Kxg7 22. Nf4 Ng8 23. N4xh5+ Bxh5 24. Nxh5+ Kh7 25. Bxe4 Qxg5 26. hxg5 Ne5 27. Rf4 f5 28. gxf6 Kh6 29. Ng7 Rxf6 30. Rxf6 Nxf6 31. Ne6 Nxe4 32. dxe4 c4 33. Kf2 Rb2+ 34. Ke3 Nc6 1-0

[Event "GER-chT U20"]
[Site "Osnabrueck"]
[Date "2011.12.29"]
[Round "5.3"]
[White "Finke, Kai"]
[Black "Wierum, Colin"]
[Result "1/2-1/2"]
[ECO "A68"]
[WhiteElo "1958"]
[BlackElo "1892"]
[PlyCount "67"]
[EventDate "2011.12.27"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 146 Extra"]
[Source "ChessBase"]
[SourceDate "2012.02.29"]
[SourceVersion "1"]
[SourceVersionDate "2012.02.29"]
[SourceQuality "1"]
[WhiteTeam "Koeln Porz"]
[BlackTeam "Hagen"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. d4 g6 2. e4 Bg7 3. c4 c5 4. d5 d6 5. Nc3 Nf6 6. f4 0-0 7. Nf3 e6 8. Be2 exd5 9. cxd5 Bg4 10. 0-0 Re8 11. h3 Bxf3 12. Bxf3 Nbd7 13. Re1 a6 14. a4 b5 15. g4 h6 16. h4 Nh7 17. g5 Ra7 18. Be3 Ndf8 19. Kg2 f6 20. gxh6 Bxh6 21. Qd2 f5 22. e5 dxe5 23. fxe5 Bxe3 24. Qxe3 Qxh4 25. Re2 f4 26. Qf2 Qg5+ 27. Kf1 Rxe5 28. Rxe5 Qxe5 29. Re1 Qf5 30. Be4 Qh3+ 31. Ke2 Qg4+ 32. Kd2 Nf6 33. Bd3 Rg7 34. Rg1 1/2-1/2

[Event "GER-chT U20"]
[Site "Osnabrueck"]
[Date "2011.12.29"]
[Round "6.3"]
[White "Stephan, Michael"]
[Black "Wierum, Colin"]
[Result "1/2-1/2"]
[ECO "B35"]
[WhiteElo "1832"]
[BlackElo "1892"]
[PlyCount "31"]
[EventDate "2011.12.27"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 146 Extra"]
[Source "ChessBase"]
[SourceDate "2012.02.29"]
[SourceVersion "1"]
[SourceVersionDate "2012.02.29"]
[SourceQuality "1"]
[WhiteTeam "Forchheim"]
[BlackTeam "Hagen"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. Bc4 0-0 8. 0-0 Nxe4 9. Nxe4 d5 10. Nxc6 bxc6 11. Bd3 dxe4 12. Bxe4 Qc7 13. c3 Be6 14. Qa4 Bd5 15. Rad1 Rfd8 16. g3 1/2-1/2

[Event "GER-chT U20"]
[Site "Osnabrueck"]
[Date "2011.12.28"]
[Round "4.3"]
[White "Wierum, Colin"]
[Black "Duzy, Stefan"]
[Result "1-0"]
[ECO "A30"]
[WhiteElo "1892"]
[BlackElo "1824"]
[PlyCount "65"]
[EventDate "2011.12.27"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 146 Extra"]
[Source "ChessBase"]
[SourceDate "2012.02.29"]
[SourceVersion "1"]
[SourceVersionDate "2012.02.29"]
[SourceQuality "1"]
[WhiteTeam "Hagen"]
[BlackTeam "Erfurt"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. c4 b6 2. Nc3 Bb7 3. Nf3 e6 4. e3 Nf6 5. Be2 c5 6. b3 Be7 7. Bb2 Nc6 8. 0-0 0-0 9. d4 cxd4 10. Nxd4 Nxd4 11. Qxd4 Rc8 12. Nb5 a6 13. Nd6 Bxd6 14. Qxd6 Ne8 15. Qg3 f5 16. Rad1 Qe7 17. Rd2 d6 18. Rfd1 e5 19. Bf3 Rf6 20. Ba3 Rg6 21. Qh3 Rh6 22. Qxf5 Rf6 23. Bd5+ Bxd5 24. Qxc8 Bb7 25. Qb8 Rg6 26. Rd5 Kf7 27. Bxd6 Nxd6 28. Rxd6 Rxg2+ 29. Kf1 Rxf2+ 30. Kxf2 Qh4+ 31. Ke2 Bf3+ 32. Kd3 e4+ 33. Kc3 1-0

[Event "GER-chT U20"]
[Site "Osnabrueck"]
[Date "2011.12.28"]
[Round "3.2"]
[White "Wierum, Colin"]
[Black "Weissbeck, Simon"]
[Result "1/2-1/2"]
[ECO "C01"]
[WhiteElo "1892"]
[BlackElo "2007"]
[PlyCount "44"]
[EventDate "2011.12.27"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 146 Extra"]
[Source "ChessBase"]
[SourceDate "2012.02.29"]
[SourceVersion "1"]
[SourceVersionDate "2012.02.29"]
[SourceQuality "1"]
[WhiteTeam "Hagen"]
[BlackTeam "Heilbronn"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Bd3 Bd6 5. Ne2 Nc6 6. Nbc3 Nf6 7. Bf4 0-0 8. Qd2 Bxf4 9. Nxf4 Re8+ 10. Nce2 Qd6 11. 0-0-0 Nb4 12. Kb1 Nxd3 13. Nxd3 Bf5 14. Nef4 Ne4 15. Qc1 Rad8 16. f3 Nf6 17. Rde1 Qb6 18. c3 Qb5 19. Qd2 Nh5 20. Nxh5 Qxd3+ 21. Qxd3 Bxd3+ 22. Kc1 c6 1/2-1/2

[Event "GER-chT U20"]
[Site "Osnabrueck"]
[Date "2011.12.27"]
[Round "1.3"]
[White "Kaulich, Philipp Theodor"]
[Black "Wierum, Colin"]
[Result "1-0"]
[ECO "B22"]
[WhiteElo "2128"]
[BlackElo "1892"]
[PlyCount "48"]
[EventDate "2011.12.27"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 146 Extra"]
[Source "ChessBase"]
[SourceDate "2012.02.29"]
[SourceVersion "1"]
[SourceVersionDate "2012.02.29"]
[SourceQuality "1"]
[WhiteTeam "Bebenhausen"]
[BlackTeam "Hagen"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 c5 2. c3 g6 3. d4 cxd4 4. cxd4 d5 5. exd5 Qxd5 6. Nc3 Qa5 7. Bc4 Bg7 8. Qb3 e6 9. Nf3 Ne7 10. 0-0 0-0 11. Bg5 Nbc6 12. Rad1 a6 13. Rfe1 h6 14. Bf4 b5 15. Bf1 Rd8 16. d5 Bxc3 17. bxc3 Nxd5 18. Bxh6 Bb7 19. c4 Nde7 20. Bd2 b4 21. Qb2 Qf5 22. Rc1 Rd7 23. Be2 Rad8 24. Be3 a5 1-0

[Event "GER-chT U20"]
[Site "Osnabrueck"]
[Date "2011.12.27"]
[Round "2.3"]
[White "Wierum, Colin"]
[Black "Rickmann, David"]
[Result "0-1"]
[ECO "B01"]
[WhiteElo "1892"]
[BlackElo "1714"]
[PlyCount "41"]
[EventDate "2011.12.27"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 146 Extra"]
[Source "ChessBase"]
[SourceDate "2012.02.29"]
[SourceVersion "1"]
[SourceVersionDate "2012.02.29"]
[SourceQuality "1"]
[WhiteTeam "Hagen"]
[BlackTeam "Magdeburg Aufbau Elbe"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qd6 4. Bc4 Nf6 5. Nge2 a6 6. a4 Bg4 7. d3 Nc6 8. 0-0 e6 9. Bf4 e5 10. Bg3 g5 11. f3 Bh5 12. Re1 0-0-0 13. Rb1 Bg6 14. Qd2 h6 15. Ne4 Nxe4 16. fxe4 Qc5+ 17. d4 Qxc4 18. b3 Qe6 19. d5 Bxe4 20. c4 Bxb1 21. Rxb1 0-1

[Event "GER-chT Nord-West U20 1112"]
[Site "Germany"]
[Date "2011.09.25"]
[Round "1"]
[White "Ismail, Nabil"]
[Black "Wierum, Colin"]
[Result "0-1"]
[ECO "B34"]
[BlackElo "1979"]
[PlyCount "86"]
[EventDate "2011.09.24"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. e4 c5 2. d4 cxd4 3. Nf3 Nc6 4. Nxd4 g6 5. Be3 Bg7 6. c3 Nf6 7. Nd2 d5 8. Bd3 0-0 9. 0-0 Ne5 10. Bc2 Neg4 11. h3 Nxe3 12. fxe3 Qb6 13. Rb1 e5 14. N4f3 Qxe3+ 15. Kh1 Nxe4 16. Nxe4 dxe4 17. Re1 Qb6 18. Bxe4 Be6 19. b3 Rad8 20. Qc2 f5 21. Bd3 e4 22. Bc4 Bxc4 23. bxc4 Qc6 24. Nd2 Rd3 25. Rb3 Rfd8 26. Re2 Bh6 27. Rb2 Bxd2 28. c5 Bxc3 29. Qb3+ R8d5 30. Qxb7 Be5 31. Re1 Rd1 32. Rg1 Rxg1+ 33. Kxg1 Qxc5+ 34. Kf1 Qc1+ 35. Ke2 Qxb2+ 36. Qxb2 Bxb2 37. a4 f4 38. h4 Bc3 39. a5 Rd2+ 40. Kf1 e3 41. h5 Rxg2 42. h6 f3 43. a6 e2# 0-1

[Event "GER-chT U20"]
[Site "Osnabrueck"]
[Date "2010.12.30"]
[Round "7.2"]
[White "Wierum, Colin"]
[Black "Czybik, Nils Patrick"]
[Result "0-1"]
[ECO "B26"]
[WhiteElo "1967"]
[BlackElo "2065"]
[PlyCount "68"]
[EventDate "2010.12.27"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 140 Extra"]
[Source "ChessBase"]
[SourceDate "2011.03.01"]
[SourceVersion "1"]
[SourceVersionDate "2011.03.01"]
[SourceQuality "1"]
[WhiteTeam "Hagen"]
[BlackTeam "Koeln Porz"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 c5 2. Nc3 g6 3. g3 Bg7 4. Bg2 Nc6 5. Nge2 d6 6. 0-0 e5 7. d3 Nge7 8. Be3 0-0 9. Qd2 Nd4 10. f4 Rb8 11. Nd1 b5 12. c3 Nxe2+ 13. Qxe2 Qc7 14. c4 exf4 15. Bxf4 bxc4 16. dxc4 Nc6 17. Rb1 Nd4 18. Qd2 Be6 19. Ne3 Rb4 20. b3 a5 21. Nc2 Nxc2 22. Qxc2 a4 23. Bd2 axb3 24. axb3 Bd4+ 25. Kh1 Rb7 26. Bc3 Be5 27. Ra1 Rfb8 28. Ra3 Qe7 29. Rfa1 Qg5 30. Bd2 Qh5 31. Bc3 Bxg3 32. h3 Bxh3 33. Bxh3 Qxh3+ 34. Kg1 Bf4 0-1

[Event "GER-chT U20"]
[Site "Osnabrueck"]
[Date "2010.12.29"]
[Round "6.2"]
[White "Nonhoff, Marko"]
[Black "Wierum, Colin"]
[Result "0-1"]
[ECO "B22"]
[WhiteElo "1973"]
[BlackElo "1967"]
[PlyCount "50"]
[EventDate "2010.12.27"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 140 Extra"]
[Source "ChessBase"]
[SourceDate "2011.03.01"]
[SourceVersion "1"]
[SourceVersionDate "2011.03.01"]
[SourceQuality "1"]
[WhiteTeam "Paderborn Schachfreunde"]
[BlackTeam "Hagen"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 c5 2. c3 g6 3. d4 cxd4 4. cxd4 d5 5. exd5 Qxd5 6. Nc3 Qa5 7. Nf3 Nf6 8. Bd2 Bg7 9. Bc4 0-0 10. 0-0 Nc6 11. h3 a6 12. Re1 Qb4 13. b3 Qd6 14. Be3 b5 15. Be2 Bb7 16. Qd2 Rfd8 17. Rad1 Rac8 18. Bf4 Qd7 19. Qe3 Nd5 20. Nxd5 Qxd5 21. Be5 e6 22. a4 Ne7 23. Nh4 Nf5 24. Qg5 Nxh4 25. Bf4 Qxg2+ 0-1

[Event "GER-chT U20"]
[Site "Osnabrueck"]
[Date "2010.12.29"]
[Round "5.2"]
[White "Wierum, Colin"]
[Black "Teichmann, Alexander"]
[Result "1-0"]
[ECO "C01"]
[WhiteElo "1967"]
[BlackElo "1842"]
[PlyCount "120"]
[EventDate "2010.12.27"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 140 Extra"]
[Source "ChessBase"]
[SourceDate "2011.03.01"]
[SourceVersion "1"]
[SourceVersionDate "2011.03.01"]
[SourceQuality "1"]
[WhiteTeam "Hagen"]
[BlackTeam "Neumuehl"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Bd3 Bd6 5. Ne2 Ne7 6. Nbc3 c6 7. Bf4 0-0 8. Qd2 Bf5 9. Bxd6 Qxd6 10. Nf4 Bxd3 11. Nxd3 Na6 12. 0-0-0 b5 13. h4 Nc7 14. Rde1 a5 15. Nc5 Ra7 16. Re2 Na6 17. Nxa6 Rxa6 18. Rhe1 Nc8 19. g4 Nb6 20. b3 a4 21. h5 Qa3+ 22. Kb1 axb3 23. cxb3 Qb4 24. g5 Nc4 25. Qd3 Na3+ 26. Ka1 Qd6 27. Qf5 b4 28. Na4 Nb5 29. Qd3 Ra7 30. Qd2 Rb7 31. f4 Nc3 32. Nxc3 bxc3 33. Qe3 Rbb8 34. Rc2 f6 35. g6 hxg6 36. hxg6 f5 37. Qe6+ Qxe6 38. Rxe6 Rf6 39. Rxf6 gxf6 40. Rxc3 Rb4 41. Rd3 Kg7 42. a3 Rb7 43. Kb2 Re7 44. Kc3 Re4 45. Rf3 Kxg6 46. a4 Kh5 47. a5 Kg4 48. Rf1 Kg3 49. a6 Re2 50. Ra1 Re8 51. a7 Ra8 52. Kb4 Kxf4 53. Kc5 Kg3 54. Kxc6 f4 55. Kb7 Rxa7+ 56. Kxa7 f3 57. Kb6 Kg2 58. Kc5 f5 59. Kxd5 f2 60. Ke5 f1Q 1-0

[Event "GER-chT U20"]
[Site "Osnabrueck"]
[Date "2010.12.28"]
[Round "4.2"]
[White "Grunwald, Martin"]
[Black "Wierum, Colin"]
[Result "1/2-1/2"]
[ECO "B34"]
[WhiteElo "1660"]
[BlackElo "1967"]
[PlyCount "55"]
[EventDate "2010.12.27"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 140 Extra"]
[Source "ChessBase"]
[SourceDate "2011.03.01"]
[SourceVersion "1"]
[SourceVersionDate "2011.03.01"]
[SourceQuality "1"]
[WhiteTeam "Dresden USV"]
[BlackTeam "Hagen"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. f3 0-0 8. Qd2 d5 9. 0-0-0 dxe4 10. Nxc6 Qxd2+ 11. Bxd2 bxc6 12. Nxe4 Nxe4 13. fxe4 Be6 14. b3 Rfd8 15. Be2 a5 16. Be3 a4 17. Rxd8+ Rxd8 18. Rd1 Ra8 19. Bd4 axb3 20. axb3 Bxd4 21. Rxd4 Kg7 22. Bf3 Kf6 23. Kd2 Ke5 24. Ra4 Rd8+ 25. Ke3 f6 26. Ra5+ Kd6 27. b4 Bd7 28. h4 1/2-1/2

[Event "GER-chT U20"]
[Site "Osnabrueck"]
[Date "2010.12.28"]
[Round "3.2"]
[White "Wierum, Colin"]
[Black "Schloeffel, Christian"]
[Result "0-1"]
[ECO "C23"]
[WhiteElo "1967"]
[BlackElo "1833"]
[PlyCount "62"]
[EventDate "2010.12.27"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 140 Extra"]
[Source "ChessBase"]
[SourceDate "2011.03.01"]
[SourceVersion "1"]
[SourceVersionDate "2011.03.01"]
[SourceQuality "1"]
[WhiteTeam "Hagen"]
[BlackTeam "Bendorf"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 e5 2. Bc4 Bc5 3. Qh5 Qf6 4. f4 Qxf4 5. Nc3 Bf2+ 6. Kf1 g6 7. Qh3 Bxg1+ 8. Kxg1 Nc6 9. d3 d6 10. Bxf4 Bxh3 11. gxh3 exf4 12. Nd5 0-0-0 13. Nxf4 Ne5 14. Bb3 Ne7 15. Kg2 g5 16. Ne2 d5 17. Ng3 N5g6 18. Rhf1 Nf4+ 19. Kf3 d4 20. h4 h6 21. h5 Nc6 22. Kg4 Ne5+ 23. Kf5 Rde8 24. Rf2 Rhf8 25. Ne2 Nfg6 26. Nxd4 Nh4+ 27. Kf6 Ng4+ 28. Kg7 Rg8+ 29. Kh7 Rh8+ 30. Kg7 Reg8+ 31. Kxf7 Nxf2 0-1

[Event "GER-chT U20"]
[Site "Osnabrueck"]
[Date "2010.12.27"]
[Round "2.2"]
[White "Schulte, Marius"]
[Black "Wierum, Colin"]
[Result "1-0"]
[ECO "A86"]
[WhiteElo "1891"]
[BlackElo "1967"]
[PlyCount "86"]
[EventDate "2010.12.27"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 140 Extra"]
[Source "ChessBase"]
[SourceDate "2011.03.01"]
[SourceVersion "1"]
[SourceVersionDate "2011.03.01"]
[SourceQuality "1"]
[WhiteTeam "Gruendau"]
[BlackTeam "Hagen"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. d4 g6 2. c4 f5 3. g3 Nf6 4. Bg2 Bg7 5. Nh3 0-0 6. 0-0 d6 7. d5 a5 8. Nc3 Nbd7 9. Nf4 Nc5 10. Be3 e5 11. dxe6 Nxe6 12. Bxb7 Rb8 13. Bxc8 Qxc8 14. Rb1 Ng4 15. Bd2 Nc5 16. Ncd5 Qa6 17. h3 Ne5 18. b3 Qa7 19. Be3 Rbe8 20. Nc3 g5 21. Qd5+ Kh8 22. Ne6 Rxe6 23. Qxe6 f4 24. gxf4 gxf4 25. Bxc5 Qxc5 26. Ne4 Qc6 27. Qd5 Qe8 28. Rfd1 f3 29. e3 Qh5 30. Kf1 Bh6 31. Ke1 Qxh3 32. Kd2 Qf5 33. Rh1 Bg7 34. Rbg1 c6 35. Qd4 Ng6 36. Qd3 Ne5 37. Qc2 h6 38. Ng5 Qxc2+ 39. Kxc2 Re8 40. Rh3 Kg8 41. Nxf3 Nxf3 42. Rxf3 Re6 43. Rfg3 Re7 1-0

[Event "GER-chT U20"]
[Site "Osnabrueck"]
[Date "2010.12.27"]
[Round "1.2"]
[White "Wierum, Colin"]
[Black "Meissner, Felix"]
[Result "0-1"]
[ECO "A07"]
[WhiteElo "1967"]
[BlackElo "2192"]
[PlyCount "80"]
[EventDate "2010.12.27"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 140 Extra"]
[Source "ChessBase"]
[SourceDate "2011.03.01"]
[SourceVersion "1"]
[SourceVersionDate "2011.03.01"]
[SourceQuality "1"]
[WhiteTeam "Hagen"]
[BlackTeam "Leipzig Gohlis"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. 0-0 0-0 5. d3 d5 6. Nbd2 d4 7. Nb3 Nc6 8. e4 dxe3 9. fxe3 e5 10. e4 a5 11. a4 h6 12. Bd2 Qe7 13. Bc3 Bg4 14. h3 Bd7 15. Nbd2 Nh5 16. Kh2 Nd4 17. Nc4 b6 18. Qd2 Rfd8 19. g4 Nxf3+ 20. Rxf3 Nf4 21. Nxe5 Nxg2 22. Nxd7 Nh4 23. Nf6+ Bxf6 24. Rxf6 Qxf6 25. Bxf6 Nf3+ 26. Kg3 Nxd2 27. Bxd8 Rxd8 28. Kf4 Nb3 29. cxb3 Rxd3 30. Ke5 Rxh3 31. Rd1 Rxb3 32. Rd7 c5 33. Rd5 Rxb2 34. Kf6 Rf2+ 35. Ke7 Rf4 36. e5 Kg7 37. Rd6 Re4 38. Rd5 Rd4 39. Rd6 Re4 40. Rd5 Rxa4 0-1

[Event "CZE-chT rap"]
[Site "Pardubice"]
[Date "2010.07.15"]
[Round "1.1"]
[White "Wierum, Colin"]
[Black "Maximov, Dmitry"]
[Result "0-1"]
[ECO "B26"]
[WhiteElo "1956"]
[BlackElo "2506"]
[PlyCount "60"]
[EventDate "2010.07.15"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "CZE"]
[SourceTitle "CBM 137 Extra"]
[Source "ChessBase"]
[SourceDate "2010.09.01"]
[SourceVersion "1"]
[SourceVersionDate "2010.09.01"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. d3 d6 4. g3 g6 5. Bg2 Bg7 6. Nge2 e6 7. 0-0 Nge7 8. f4 0-0 9. Be3 Nd4 10. Qd2 Nec6 11. Nd1 d5 12. c3 Nxe2+ 13. Qxe2 b6 14. c4 dxc4 15. dxc4 Ba6 16. Rc1 Qd7 17. b3 Rad8 18. Nc3 Qd3 19. Rfd1 Qxe2 20. Nxe2 Nb4 21. a3 Nc6 22. e5 Na5 23. Rxd8 Rxd8 24. Rc3 f6 25. Bh3 Kf7 26. Bc1 Rd1+ 27. Kf2 Nc6 28. Bg4 fxe5 29. Ng1 exf4 30. Rc2 Bd4+ 0-1

[Event "Niedersachsen-ch open"]
[Site "Verden"]
[Date "2010.01.06"]
[Round "7.13"]
[White "Wierum, Colin"]
[Black "Lossin, Sven Hendrik"]
[Result "1-0"]
[ECO "B00"]
[WhiteElo "1934"]
[BlackElo "2067"]
[PlyCount "55"]
[EventDate "2010.01.03"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 b6 2. d4 Bb7 3. f3 e6 4. Be3 d5 5. exd5 exd5 6. Qd2 Bd6 7. Nc3 a6 8. 0-0-0 Ne7 9. h4 c5 10. dxc5 bxc5 11. Bg5 Qc7 12. Nh3 f6 13. Bf4 Nd7 14. Nxd5 Nxd5 15. Bxd6 Qxd6 16. c4 Qg3 17. cxd5 Qxh4 18. Re1+ Kf7 19. Nf4 Qxh1 20. Bc4 Qh6 21. d6+ Kf8 22. Ne6+ Kf7 23. Nxg7+ Kxg7 24. Re7+ Kg6 25. Bd3+ f5 26. Bxf5+ Kxf5 27. Qxh6 Bc6 28. g4# 1-0

[Event "Niedersachsen-ch open"]
[Site "Verden"]
[Date "2010.01.05"]
[Round "6.30"]
[White "Brehm, Stefan"]
[Black "Wierum, Colin"]
[Result "0-1"]
[ECO "A68"]
[WhiteElo "1640"]
[BlackElo "1934"]
[PlyCount "54"]
[EventDate "2010.01.03"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. d4 g6 2. c4 Bg7 3. e4 c5 4. d5 d6 5. Nc3 Nf6 6. Bd3 0-0 7. f4 e6 8. Nf3 exd5 9. cxd5 Bg4 10. 0-0 a6 11. a4 Qc7 12. Qe2 Nbd7 13. Be3 Rfe8 14. h3 Bxf3 15. Qxf3 c4 16. Bc2 Nc5 17. f5 Nfd7 18. fxg6 fxg6 19. Qf7+ Kh8 20. Kh1 Rf8 21. Qe7 Rae8 22. Qh4 Ne5 23. Bh6 Ned3 24. Rxf8+ Rxf8 25. Rb1 Qf7 26. Bd1 Qf1+ 27. Kh2 Be5+ 0-1

[Event "Niedersachsen-ch open"]
[Site "Verden"]
[Date "2010.01.05"]
[Round "5.34"]
[White "Wierum, Colin"]
[Black "Roehl, Bernd"]
[Result "1-0"]
[ECO "C58"]
[WhiteElo "1934"]
[BlackElo "1718"]
[PlyCount "31"]
[EventDate "2010.01.03"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 d5 5. exd5 Na5 6. Bb5+ c6 7. dxc6 bxc6 8. Qf3 Qb6 9. Ba4 Bg4 10. Qg3 Bd6 11. Nc3 Bf5 12. d3 Rd8 13. Nge4 Bxe4 14. dxe4 Qa6 15. Qxg7 Rg8 16. Qxf6 1-0

[Event "Niedersachsen-ch open"]
[Site "Verden"]
[Date "2010.01.04"]
[Round "4.37"]
[White "Grigorian, Spartak"]
[Black "Wierum, Colin"]
[Result "1/2-1/2"]
[ECO "A87"]
[WhiteElo "1762"]
[BlackElo "1934"]
[PlyCount "104"]
[EventDate "2010.01.03"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. d4 f5 2. Nf3 Nf6 3. c4 g6 4. g3 Bg7 5. b4 0-0 6. Bg2 d6 7. 0-0 a5 8. bxa5 c6 9. Bb2 Qxa5 10. Qb3 Kh8 11. Nc3 Qc7 12. a4 e5 13. dxe5 dxe5 14. Ba3 c5 15. Rab1 Nbd7 16. Ng5 Ra6 17. Nd5 Qa5 18. Qb5 Qxb5 19. Rxb5 Rxa4 20. Bxc5 Nxc5 21. Rxc5 h6 22. Nf7+ Rxf7 23. Rxc8+ Kh7 24. Nxf6+ Bxf6 25. Bd5 Rd7 26. Rb1 Ra7 27. Rb8 Rc7 28. Rf8 Kg7 29. Rg8+ Kh7 30. Rb6 Ra6 31. Rxa6 bxa6 32. Ra8 e4 33. Rxa6 Bd4 34. e3 Bc5 35. Kf1 Ra7 36. Rc6 Bb4 37. Rb6 Bc5 38. Rb5 Rc7 39. Ke2 Kg7 40. Kd2 Kf6 41. Kc3 Kg5 42. Ra5 Kg4 43. Ra6 Kf3 44. Rxg6 Kxf2 45. Rf6 Kxe3 46. Rxf5 Bd4+ 47. Kc2 Re7 48. Rf4 Bg7 49. Rg4 Bf6 50. h4 Bg7 51. Rf4 Bd4 52. h5 Bg7 1/2-1/2

[Event "Niedersachsen-ch open"]
[Site "Verden"]
[Date "2010.01.04"]
[Round "3.64"]
[White "Wierum, Colin"]
[Black "Schreiber, Justina"]
[Result "1-0"]
[ECO "A00"]
[WhiteElo "1934"]
[BlackElo "1404"]
[PlyCount "57"]
[EventDate "2010.01.03"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. c3 d5 2. c4 c6 3. g3 Nf6 4. Bg2 Bf5 5. cxd5 Nxd5 6. Nc3 Nxc3 7. bxc3 e6 8. Nf3 Qc7 9. 0-0 Nd7 10. d4 f6 11. Qb3 0-0-0 12. e4 Bxe4 13. Qxe6 Bd5 14. Qf5 Kb8 15. a4 Bd6 16. Rb1 Rde8 17. Nd2 Bxg2 18. Kxg2 g6 19. Qd3 Kc8 20. Nc4 Re7 21. Bd2 Rf8 22. Rb2 Rff7 23. Rfb1 b6 24. Nxd6+ Qxd6 25. Qa6+ Kd8 26. Qxa7 Qb8 27. Qxb8+ Nxb8 28. Rxb6 Nd7 29. Rxc6 1-0

[Event "Niedersachsen-ch open"]
[Site "Verden"]
[Date "2010.01.03"]
[Round "2.24"]
[White "Poelig, Juergen"]
[Black "Wierum, Colin"]
[Result "1-0"]
[ECO "B22"]
[WhiteElo "1807"]
[BlackElo "1934"]
[PlyCount "67"]
[EventDate "2010.01.03"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. d4 cxd4 5. Nf3 Nc6 6. cxd4 d6 7. Bc4 Nb6 8. Bb5 a6 9. Bxc6+ bxc6 10. 0-0 g6 11. Nc3 Bg7 12. h3 0-0 13. Bf4 Be6 14. Ne4 Bd5 15. Re1 Bxe4 16. Rxe4 Nd5 17. Bd2 Rb8 18. Qc1 Qb6 19. b3 f5 20. Rh4 dxe5 21. dxe5 f4 22. Bxf4 Rxf4 23. Rxf4 Bh6 24. Rb4 Qxb4 25. Qxh6 e6 26. Ng5 Qe7 27. Rc1 Rc8 28. Rc4 c5 29. h4 Rc6 30. h5 gxh5 31. Qxh5 Rc7 32. Rg4 Kf8 33. Qh6+ Ke8 34. Nxe6 1-0

[Event "Niedersachsen-ch open"]
[Site "Verden"]
[Date "2010.01.03"]
[Round "1.39"]
[White "Wierum, Colin"]
[Black "Guede, Klaus"]
[Result "1/2-1/2"]
[ECO "B02"]
[WhiteElo "1934"]
[BlackElo "1764"]
[PlyCount "135"]
[EventDate "2010.01.03"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 Nf6 2. Nc3 d5 3. e5 Ne4 4. f4 Nxc3 5. dxc3 Bf5 6. Nf3 e6 7. Bd3 Bxd3 8. Qxd3 Qd7 9. Be3 Be7 10. 0-0-0 Na6 11. g4 Nc5 12. Qe2 Ne4 13. Nd2 Nxd2 14. Rxd2 Qa4 15. Kb1 c6 16. h4 Qb5 17. Qxb5 cxb5 18. f5 b6 19. g5 0-0-0 20. f6 Bf8 21. h5 gxf6 22. exf6 Bd6 23. Rg2 Rdg8 24. Kc1 Kd7 25. Kd2 Be5 26. Kd3 Kd6 27. Bd4 Bf4 28. Rhg1 e5 29. Be3 e4+ 30. Ke2 Be5 31. Rd1 Ke6 32. Bd4 Bf4 33. Rdg1 Be5 34. Ke3 Bd6 35. g6 hxg6 36. hxg6 Rh3+ 37. Ke2 fxg6 38. Rxg6 Rxg6 39. Rxg6 Rg3 40. Rh6 Bf8 41. Rh8 Kf7 42. Rh7+ Kg6 43. Rxa7 Rg2+ 44. Kd1 Bh6 45. Rb7 Rd2+ 46. Ke1 Rxc2 47. Rxb6 Bg5 48. Rxb5 e3 49. Rxd5 Bh4+ 50. Kd1 Rd2+ 51. Kc1 e2 52. Kxd2 e1Q+ 53. Kd3 Qb1+ 54. Kc4 Qxa2+ 55. b3 Qe2+ 56. Kb4 Qa6 57. Rb5 Qd6+ 58. Bc5 Qf4+ 59. Bd4 Bf2 60. Rd5 Bxd4 61. Rxd4 Qxf6 62. Rc4 Qb6+ 63. Ka4 Kf6 64. b4 Qa6+ 65. Kb3 Ke5 66. Rd4 Qe6+ 67. Kb2 Qc6 68. Kb3 1/2-1/2

[Event "Niedersachsen-ch U18"]
[Site "Rotenburg"]
[Date "2009.04.10"]
[Round "9"]
[White "Wierum, Colin"]
[Black "Bierwirth, Keith"]
[Result "1-0"]
[ECO "C54"]
[WhiteElo "1949"]
[BlackElo "1205"]
[PlyCount "109"]
[EventDate "2009.04.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. e5 d5 7. Bb5 Ne4 8. cxd4 Bb6 9. 0-0 f5 10. Nc3 0-0 11. Bxc6 bxc6 12. Nd2 Ba6 13. Re1 Qh4 14. Ndxe4 fxe4 15. Be3 Rf5 16. h3 Raf8 17. Qg4 Qxg4 18. hxg4 R5f7 19. b4 Bc8 20. g5 a6 21. Rac1 Re8 22. Ne2 Bd7 23. Rc2 Rff8 24. Rec1 Re7 25. Rc3 g6 26. Ra3 Ra8 27. f3 exf3 28. gxf3 Rf7 29. Kg2 Raf8 30. f4 Ra8 31. Nc3 Ra7 32. Rb3 a5 33. bxa5 Rxa5 34. a4 Re7 35. Ra3 Kg7 36. Ne2 Ra8 37. Bd2 Ba5 38. Bxa5 Rxa5 39. Rc5 Rxc5 40. dxc5 Bf5 41. Nd4 Bd7 42. a5 Re8 43. a6 Ra8 44. e6 Be8 45. a7 Kf8 46. Kg3 Ke7 47. Kg4 Kf8 48. f5 gxf5+ 49. Kxf5 Kg7 50. Ke5 Kg6 51. e7 Kf7 52. Ne6 d4 53. Nxc7 d3 54. Nxa8 d2 55. Rd3 1-0

[Event "Niedersachsen-ch U18"]
[Site "Rotenburg"]
[Date "2009.04.09"]
[Round "8"]
[White "Wierum, Colin"]
[Black "Hurink, Maarten"]
[Result "1/2-1/2"]
[ECO "B20"]
[WhiteElo "1949"]
[BlackElo "1873"]
[PlyCount "33"]
[EventDate "2009.04.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. e4 c5 2. b4 cxb4 3. a3 bxa3 4. Bxa3 Nc6 5. d4 d6 6. f4 e6 7. Nf3 Nf6 8. Bd3 Be7 9. 0-0 0-0 10. Kh1 b6 11. Nbd2 Bb7 12. h3 Nh5 13. g4 Nxf4 14. Nc4 b5 15. Ne3 a6 16. c4 Nxd3 17. Qxd3 1/2-1/2

[Event "Niedersachsen-ch U18"]
[Site "Rotenburg"]
[Date "2009.04.08"]
[Round "7"]
[White "Seemann, Semjon"]
[Black "Wierum, Colin"]
[Result "1-0"]
[ECO "B35"]
[WhiteElo "2072"]
[BlackElo "1949"]
[PlyCount "71"]
[EventDate "2009.04.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nc3 c5 4. Nf3 cxd4 5. Nxd4 Nc6 6. Be3 Nf6 7. Bc4 0-0 8. Bb3 a5 9. 0-0 a4 10. Nxa4 Nxe4 11. Nb5 d6 12. Bb6 Qd7 13. Nc7 Rb8 14. f3 Nf6 15. Re1 Qf5 16. c4 Nd7 17. Bc2 Qh5 18. Be3 Nde5 19. Qe2 Bd7 20. Nb6 Bh6 21. Bxh6 Qxh6 22. Be4 Nd4 23. Qd1 Ne6 24. Ncd5 Rfe8 25. g3 Bc6 26. f4 Nd7 27. Nxd7 Bxd7 28. Nb6 Bc6 29. Bd5 Qh3 30. b4 Qf5 31. Bxe6 fxe6 32. Qe2 Kf7 33. b5 Qc5+ 34. Qe3 Bf3 35. Qxc5 dxc5 36. Nd7 1-0

[Event "Niedersachsen-ch U18"]
[Site "Rotenburg"]
[Date "2009.04.07"]
[Round "6"]
[White "Kickert, Germaine Helene"]
[Black "Wierum, Colin"]
[Result "1-0"]
[ECO "B06"]
[WhiteElo "1933"]
[BlackElo "1949"]
[PlyCount "85"]
[EventDate "2009.04.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nc3 c5 4. dxc5 Bxc3+ 5. bxc3 Qa5 6. Qd4 Nf6 7. Bb2 Nc6 8. Qe3 b6 9. cxb6 axb6 10. Bc4 Qe5 11. Bd3 Ng4 12. Qg3 Qe6 13. c4 0-0 14. Nf3 h6 15. h3 Nf6 16. Qh4 h5 17. Kf1 d6 18. Ng5 Qd7 19. g4 e5 20. Rg1 Kg7 21. gxh5 Rh8 22. Be2 Nxh5 23. Bxh5 Rxh5 24. Ne6+ Kh7 25. Qxh5+ gxh5 26. Nf8+ Kh8 27. Nxd7 Bxd7 28. Rg3 Be6 29. Rc3 Na5 30. Ra3 Rc8 31. Kg2 Rxc4 32. Bc3 Nb7 33. f3 Nc5 34. Rd1 Na4 35. Rd3 b5 36. Kg3 Bd7 37. Rxd6 Nxc3 38. Rxd7 b4 39. Raa7 Ne2+ 40. Kh4 Nf4 41. Rxf7 Rc8 42. Kg5 Kg8 43. Kf6 1-0

[Event "Niedersachsen-ch U18"]
[Site "Rotenburg"]
[Date "2009.04.07"]
[Round "5"]
[White "Wierum, Colin"]
[Black "List, Tilman"]
[Result "1-0"]
[ECO "B20"]
[WhiteElo "1949"]
[BlackElo "1927"]
[PlyCount "62"]
[EventDate "2009.04.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. e4 c5 2. b3 Nc6 3. Bb2 e5 4. f4 d6 5. Nf3 exf4 6. Nc3 Nf6 7. Nd5 Nxd5 8. exd5 Ne7 9. Bb5+ Bd7 10. Bxd7+ Qxd7 11. c4 Rg8 12. Qc2 Nf5 13. 0-0-0 0-0-0 14. Rde1 g5 15. g4 fxg3 16. hxg3 g4 17. Nh4 Nxg3 18. Rhg1 Be7 19. Qxh7 Bxh4 20. Qxh4 Nf5 21. Qf2 Nh6 22. d4 b6 23. dxc5 dxc5 24. Qf4 Rg6 25. Bf6 Re8 26. Rxe8+ Qxe8 27. Qd6 Qe3+ 28. Kb2 Rxf6 29. Qxf6 Qxg1 30. Qc6+ Kb8 31. d6 Qg2+ 1-0

[Event "Niedersachsen-ch U18"]
[Site "Rotenburg"]
[Date "2009.04.06"]
[Round "4"]
[White "Kessler, Marcel"]
[Black "Wierum, Colin"]
[Result "1/2-1/2"]
[ECO "A56"]
[WhiteElo "1847"]
[BlackElo "1949"]
[PlyCount "48"]
[EventDate "2009.04.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. d4 g6 2. c4 Bg7 3. Nc3 c5 4. d5 Nf6 5. Nf3 0-0 6. Qc2 d6 7. e4 e6 8. dxe6 Bxe6 9. Be2 Nc6 10. a3 a6 11. 0-0 Qc7 12. h3 Nh5 13. Be3 f5 14. Ng5 Bd7 15. Nd5 Qd8 16. Bxh5 gxh5 17. exf5 Bxf5 18. Qd2 Ne5 19. Qe2 h6 20. f4 Bd3 21. Qxh5 hxg5 22. fxe5 Rxf1+ 23. Rxf1 Bxf1 24. Bxg5 Qd7 1/2-1/2

[Event "Niedersachsen-ch U18"]
[Site "Rotenburg"]
[Date "2009.04.05"]
[Round "2"]
[White "Schreiner, Till"]
[Black "Wierum, Colin"]
[Result "1-0"]
[ECO "A40"]
[WhiteElo "2082"]
[BlackElo "1949"]
[PlyCount "49"]
[EventDate "2009.04.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. d4 g6 2. c4 Bg7 3. Nf3 f5 4. Nc3 c5 5. d5 Nf6 6. g3 0-0 7. Bg2 a6 8. a4 d6 9. 0-0 h6 10. Qc2 Re8 11. Nh4 Kf7 12. e4 e6 13. dxe6+ Bxe6 14. exf5 Bxc4 15. fxg6+ Kg8 16. Rd1 Nc6 17. Be3 Nb4 18. Qf5 Be6 19. Qf4 Nc2 20. Rxd6 Qe7 21. Rad1 Nxe3 22. Qxe3 Rac8 23. Rxe6 Qxe6 24. Qxe6+ Rxe6 25. Bh3 1-0

[Event "Niedersachsen-ch U18"]
[Site "Rotenburg"]
[Date "2009.04.05"]
[Round "3"]
[White "Wierum, Colin"]
[Black "Gersch, Andre"]
[Result "0-1"]
[ECO "D05"]
[WhiteElo "1949"]
[BlackElo "1838"]
[PlyCount "58"]
[EventDate "2009.04.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. b3 e6 2. Bb2 d5 3. e3 Nf6 4. Nf3 Bd6 5. d4 Ne4 6. Nbd2 f5 7. c4 c6 8. Bd3 0-0 9. Qc2 Nd7 10. h3 Ndf6 11. g4 Bb4 12. Ke2 Nxd2 13. Nxd2 Ne4 14. Nf3 Qf6 15. g5 Nxg5 16. Nxg5 Qxg5 17. Rag1 Qh5+ 18. f3 Bd7 19. a3 Bd6 20. h4 Be7 21. Rh3 Rae8 22. Kd2 f4 23. e4 e5 24. Rhh1 Qxf3 25. Kc1 Qe3+ 26. Kb1 Bxh4 27. Bc1 Qf2 28. exd5 e4 29. Bxe4 Rxe4 0-1

[Event "Niedersachsen-ch U18"]
[Site "Rotenburg"]
[Date "2009.04.04"]
[Round "1"]
[White "Wierum, Colin"]
[Black "Delekat, Julian"]
[Result "1-0"]
[ECO "B13"]
[WhiteElo "1949"]
[BlackElo "1315"]
[PlyCount "37"]
[EventDate "2009.04.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. Bd3 Nc6 5. c3 Nf6 6. Ne2 e6 7. 0-0 h6 8. Nd2 Bd6 9. f4 g5 10. Nf3 gxf4 11. Bxf4 Bxf4 12. Nxf4 Qd6 13. Qd2 Bd7 14. Rae1 0-0-0 15. b4 Rdg8 16. b5 Ne7 17. a4 Ng6 18. Nxg6 fxg6 19. Ne5 1-0

[Event "Niedersachsen-ch op"]
[Site "Verden"]
[Date "2009.01.06"]
[Round "7"]
[White "Zotin, Vladimir"]
[Black "Wierum, Colin"]
[Result "1/2-1/2"]
[ECO "B06"]
[WhiteElo "1976"]
[BlackElo "1954"]
[PlyCount "62"]
[EventDate "2009.01.03"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. f4 c5 4. Nf3 cxd4 5. Nxd4 Nc6 6. c3 d6 7. Bb5 Bd7 8. Be3 Nf6 9. Qd3 0-0 10. Nd2 a6 11. Bxc6 bxc6 12. 0-0 d5 13. N4b3 Qc7 14. h3 Nxe4 15. Nxe4 Bf5 16. Nbc5 dxe4 17. Qc4 a5 18. g4 Bc8 19. Qxe4 h5 20. Qf3 hxg4 21. hxg4 Ba6 22. Rf2 Rfd8 23. f5 Bc4 24. Re1 Rd6 25. Bf4 Bd5 26. Bxd6 exd6 27. Qf4 Be5 28. Rxe5 dxe5 29. Qh6 Qd6 30. f6 Qf8 31. Qh4 Qxc5 1/2-1/2

[Event "Niedersachsen-ch op"]
[Site "Verden"]
[Date "2009.01.05"]
[Round "5"]
[White "Heyne, Lukas"]
[Black "Wierum, Colin"]
[Result "1-0"]
[ECO "B08"]
[WhiteElo "1774"]
[BlackElo "1954"]
[PlyCount "77"]
[EventDate "2009.01.03"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nc3 d6 4. Be3 Nf6 5. Nf3 0-0 6. Qd2 c6 7. 0-0-0 b5 8. e5 b4 9. Ne2 Nd5 10. Bh6 Qa5 11. Kb1 Be6 12. Bxg7 Kxg7 13. Ng5 Nd7 14. h4 Rab8 15. Nxe6+ fxe6 16. Ka1 N7b6 17. Nc1 Nc3 18. h5 Nxd1 19. hxg6 hxg6 20. Bd3 Rh8 21. Rxh8 Rxh8 22. Qg5 Kf8 23. Qf4+ Ke8 24. Bxg6+ Kd7 25. exd6 Nd5 26. Qe5 Qd8 27. Bf7 Rh6 28. Qg5 Rf6 29. Nd3 Nxf2 30. Nc5+ Kc8 31. d7+ Kb8 32. Qe5+ Ka8 33. Na6 Ng4 34. Qe2 Rxf7 35. Nc5 Qh8 36. a3 Qd8 37. Qa6 Qc7 38. d8R+ Qxd8 39. Qb7# 1-0

[Event "Niedersachsen-ch op"]
[Site "Verden"]
[Date "2009.01.05"]
[Round "6"]
[White "Wierum, Colin"]
[Black "Palmer, Harald"]
[Result "1-0"]
[ECO "C53"]
[WhiteElo "1954"]
[BlackElo "1785"]
[PlyCount "87"]
[EventDate "2009.01.03"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 d6 5. d4 exd4 6. cxd4 Bb4+ 7. Nc3 Nge7 8. 0-0 0-0 9. Bg5 Qe8 10. a3 Bxc3 11. bxc3 Bg4 12. Re1 Ng6 13. h3 Bd7 14. Rb1 Rb8 15. Nh4 Nxh4 16. Bxh4 Ne7 17. e5 d5 18. Bxe7 Qxe7 19. Bxd5 Qxa3 20. Qd3 g6 21. Ra1 Qe7 22. Rxa7 c6 23. Bb3 Bf5 24. Qe3 Ra8 25. Rea1 Rxa7 26. Rxa7 Rc8 27. c4 Qb4 28. Ra1 Kg7 29. Rd1 Be6 30. d5 cxd5 31. cxd5 Rc3 32. Rd3 Rxd3 33. Qxd3 Qe1+ 34. Qf1 Qxf1+ 35. Kxf1 Bd7 36. Ke2 Kf8 37. Ke3 h6 38. Kd4 b6 39. g4 Ke7 40. f4 Kf8 41. e6 fxe6 42. dxe6 Bb5 43. Ke5 Bf1 44. Kf6 1-0

[Event "Niedersachsen-ch op"]
[Site "Verden"]
[Date "2009.01.04"]
[Round "3"]
[White "Kleene, Jan"]
[Black "Wierum, Colin"]
[Result "0-1"]
[ECO "A04"]
[WhiteElo "1232"]
[BlackElo "1954"]
[PlyCount "64"]
[EventDate "2009.01.03"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. Nf3 g6 2. d4 Bg7 3. c4 c5 4. Nc3 cxd4 5. Nxd4 Nc6 6. Nxc6 bxc6 7. g3 Nf6 8. Bg2 0-0 9. 0-0 Bb7 10. Bf4 d5 11. cxd5 Nxd5 12. Nxd5 cxd5 13. Qd2 Qb6 14. Bh6 Bxh6 15. Qxh6 e6 16. b3 a5 17. Rab1 Rac8 18. Rfc1 Rc5 19. Rxc5 Qxc5 20. Qc1 Qb5 21. Qe1 Rc8 22. e4 d4 23. Rc1 Rd8 24. Rc4 d3 25. Qd2 Ba6 26. Rc3 Qb4 27. Bf1 Qxe4 28. f4 Qd4+ 29. Kg2 Bb7+ 30. Kh3 Qd5 31. g4 Qf3+ 32. Kh4 Qxf1 0-1

[Event "Niedersachsen-ch op"]
[Site "Verden"]
[Date "2009.01.04"]
[Round "4"]
[White "Wierum, Colin"]
[Black "Hebbinghaus, Holger"]
[Result "0-1"]
[ECO "C01"]
[WhiteElo "1954"]
[BlackElo "2294"]
[PlyCount "62"]
[EventDate "2009.01.03"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Bd3 Nc6 5. Ne2 Bd6 6. Nbc3 Nge7 7. Be3 Nb4 8. Nf4 0-0 9. Qh5 Nxd3+ 10. Nxd3 c6 11. g4 f5 12. gxf5 Nxf5 13. 0-0-0 Qh4 14. Qxh4 Nxh4 15. f4 Ng2 16. Bd2 Nxf4 17. Ne5 Ne6 18. Be1 Nxd4 19. Rxd4 Bxe5 20. Rd3 Bf5 21. Rf3 Bg4 22. Rxf8+ Rxf8 23. h3 Bf3 24. Rg1 Bh2 25. Rf1 Bg2 26. Rxf8+ Kxf8 27. h4 Bf4+ 28. Kd1 Bf3+ 29. Ne2 Be5 30. b3 Kf7 31. Kd2 Bxe2 0-1

[Event "Niedersachsen-ch op"]
[Site "Verden"]
[Date "2009.01.03"]
[Round "1"]
[White "Soelken, Hagen"]
[Black "Wierum, Colin"]
[Result "0-1"]
[ECO "A02"]
[WhiteElo "1948"]
[BlackElo "1954"]
[PlyCount "118"]
[EventDate "2009.01.03"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. f4 g6 2. Nf3 Bg7 3. e3 c5 4. Nc3 d5 5. Bb5+ Nc6 6. d4 a6 7. Bxc6+ bxc6 8. b3 Bg4 9. 0-0 cxd4 10. exd4 c5 11. Ne2 cxd4 12. Bb2 Nf6 13. Bxd4 0-0 14. Ne5 Bxe2 15. Qxe2 Qc7 16. Rac1 Nd7 17. c4 Nxe5 18. fxe5 Qd7 19. Rfd1 dxc4 20. Bb2 Qa7+ 21. Bd4 Qd7 22. Bb2 Qa7+ 23. Bd4 Qb7 24. Rxc4 Rfd8 25. Rdc1 Rac8 26. Rxc8 Rxc8 27. Rxc8+ Qxc8 28. Qc4 Qg4 29. Qd3 h6 30. Bc3 Qf4 31. h3 Bxe5 32. Bxe5 Qxe5 33. Qxa6 Qe3+ 34. Kh2 Qf4+ 35. Kh1 e5 36. a4 e4 37. Qc8+ Kh7 38. Qc4 Qf5 39. a5 e3 40. a6 Qf2 41. a7 e2 42. Qxe2 Qxe2 43. a8Q Qd1+ 44. Kh2 Qxb3 45. Qf8 Qe6 46. Qb4 g5 47. Qb1+ Qg6 48. Qxg6+ Kxg6 49. g4 Kf6 50. Kg2 Ke5 51. Kg3 Ke4 52. Kg2 Ke3 53. Kg3 Ke2 54. Kg2 f6 55. Kg3 Kf1 56. Kf3 Kg1 57. Kg3 Kh1 58. h4 gxh4+ 59. Kxh4 Kg2 0-1

[Event "Niedersachsen-ch op"]
[Site "Verden"]
[Date "2009.01.03"]
[Round "2"]
[White "Wierum, Colin"]
[Black "Heyne, Jan Hendrik"]
[Result "1-0"]
[ECO "B80"]
[WhiteElo "1954"]
[BlackElo "1597"]
[PlyCount "115"]
[EventDate "2009.01.03"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. f3 Nbd7 7. Be3 e6 8. Qd2 Qc7 9. g4 Ne5 10. 0-0-0 b5 11. Bd3 Bb7 12. h4 Rc8 13. h5 b4 14. Nce2 d5 15. exd5 Nxd5 16. g5 Nc3 17. Nxc3 bxc3 18. Qxc3 Qxc3 19. bxc3 Nxf3 20. Rh3 Ba3+ 21. Kb1 Ne5 22. Bd2 Rb8 23. Ka1 Bb2+ 24. Kxb2 Bg2+ 25. Bb5+ axb5 26. Rh2 Bd5 27. Bf4 Nc4+ 28. Kb1 Rb7 29. h6 g6 30. Nb3 0-0 31. Nc5 Ra7 32. Nd3 Rfa8 33. Nb4 Ra3 34. Rh3 Nb6 35. Rhd3 Na4 36. Be5 Nc5 37. Rd4 f6 38. Nxd5 exd5 39. Bd6 Rxc3 40. Rxd5 Ne4 41. Bb4 Rc4 42. Rxb5 Nxg5 43. Rd7 Rh4 44. Rg7+ Kh8 45. Rgb7 Kg8 46. R5b6 Rxh6 47. Rxf6 Rh1+ 48. Kb2 Rc8 49. Rf4 Rh3 50. a4 Ne6 51. Re4 Ng7 52. a5 Nf5 53. c3 Rh2+ 54. Kb3 Rh1 55. Re2 Rd1 56. a6 Rdd8 57. a7 Ra8 58. Re6 1-0

[Event "GER North-chT U16"]
[Site "Verden an der Aller"]
[Date "2008.09.14"]
[Round "5.1"]
[White "Lock, Adrian"]
[Black "Wierum, Colin"]
[Result "1/2-1/2"]
[ECO "C54"]
[WhiteElo "1908"]
[BlackElo "1822"]
[PlyCount "86"]
[EventDate "2008.09.12"]
[EventType "team-swiss"]
[EventRounds "6"]
[EventCountry "GER"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]
[WhiteTeam "Hamburg Koenigsspringer"]
[BlackTeam "Hagen"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. d3 d6 5. c3 Nf6 6. 0-0 0-0 7. Be3 Bb6 8. Bb3 Ne7 9. Nbd2 Ng6 10. Nc4 Bxe3 11. Nxe3 c6 12. Re1 Be6 13. h3 h6 14. Nf1 Qd7 15. Bxe6 fxe6 16. d4 exd4 17. cxd4 d5 18. Ne5 Nxe5 19. dxe5 Nh7 20. exd5 exd5 21. Qd4 Ng5 22. Rad1 a6 23. Rd3 Rae8 24. Ng3 Ne6 25. Qb6 Qf7 26. Rf3 Nf4 27. Kh2 Qd7 28. Qb4 Ne6 29. Rxf8+ Rxf8 30. f3 Rf4 31. Qd6 Qf7 32. Nh5 Qxh5 33. Qxe6+ Kh8 34. Qd6 Rxf3 35. gxf3 Qxf3 36. Rg1 Qf2+ 37. Kh1 Qf3+ 38. Rg2 Qxh3+ 39. Kg1 Qe3+ 40. Kf1 Qc1+ 41. Kf2 Qd2+ 42. Kf3 Qd3+ 43. Kf2 Qd2+ 1/2-1/2

[Event "GER North-chT U16"]
[Site "Verden an der Aller"]
[Date "2008.09.14"]
[Round "6.1"]
[White "Wierum, Colin"]
[Black "Hoeger, Bastian"]
[Result "1/2-1/2"]
[ECO "B43"]
[WhiteElo "1822"]
[BlackElo "1776"]
[PlyCount "79"]
[EventDate "2008.09.12"]
[EventType "team-swiss"]
[EventRounds "6"]
[EventCountry "GER"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]
[WhiteTeam "Hagen"]
[BlackTeam "Kiel Meerbauer"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Be3 Qc7 6. a3 Nf6 7. Nc3 b5 8. Bd3 Bb7 9. 0-0 Be7 10. f4 d6 11. Kh1 Nbd7 12. Nb3 0-0 13. Qd2 Rfd8 14. Rad1 Rac8 15. h3 Nc5 16. Nxc5 dxc5 17. e5 Ne4 18. Nxe4 Bxe4 19. Qe2 Qc6 20. Bg1 Bxd3 21. Rxd3 Rxd3 22. Qxd3 Rd8 23. Qe2 Qd5 24. Qf3 h6 25. Kh2 Kf8 26. c3 Qxf3 27. Rxf3 c4 28. Bd4 Rd5 29. g4 Bc5 30. Bxc5+ Rxc5 31. Rf2 Rd5 32. Kg2 Ke7 33. Re2 g6 34. h4 a5 35. Kf2 Rd1 36. Re1 Rd5 37. Re2 Kd7 38. Ke1 Kc6 39. Rd2 Kc5 40. Ke2 1/2-1/2

[Event "GER North-chT U16"]
[Site "Verden an der Aller"]
[Date "2008.09.13"]
[Round "3.1"]
[White "Schiffner, Kevin"]
[Black "Wierum, Colin"]
[Result "1/2-1/2"]
[ECO "A69"]
[WhiteElo "1934"]
[BlackElo "1822"]
[PlyCount "75"]
[EventDate "2008.09.12"]
[EventType "team-swiss"]
[EventRounds "6"]
[EventCountry "GER"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]
[WhiteTeam "Magdeburg Aufbau Elbe"]
[BlackTeam "Hagen"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. d4 c5 2. d5 g6 3. c4 Bg7 4. Nc3 Nf6 5. Nf3 0-0 6. e4 d6 7. Be2 e6 8. 0-0 exd5 9. cxd5 a6 10. a4 Re8 11. Nd2 Nbd7 12. f4 Rb8 13. Qc2 Qc7 14. Nc4 b5 15. axb5 axb5 16. Na5 b4 17. Nb5 Qb6 18. Nc4 Qxb5 19. Nxd6 Qb6 20. Nxe8 Nxe8 21. e5 Bb7 22. Bf3 Nc7 23. Rd1 g5 24. Qf5 c4+ 25. Kh1 Nc5 26. Qxg5 Nd3 27. Rxd3 cxd3 28. d6 Ne6 29. Qg3 Bxf3 30. gxf3 Qd4 31. f5 d2 32. Bxd2 Qxd2 33. fxe6 fxe6 34. Ra7 Qc1+ 35. Kg2 Qd2+ 36. Kh1 Qd1+ 37. Kg2 Qd2+ 38. Kh1 1/2-1/2

[Event "GER North-chT U16"]
[Site "Verden an der Aller"]
[Date "2008.09.13"]
[Round "4.1"]
[White "Wierum, Colin"]
[Black "Bart, Simon"]
[Result "1-0"]
[ECO "C27"]
[WhiteElo "1822"]
[BlackElo "1798"]
[PlyCount "113"]
[EventDate "2008.09.12"]
[EventType "team-swiss"]
[EventRounds "6"]
[EventCountry "GER"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]
[WhiteTeam "Hagen"]
[BlackTeam "Werder Bremen"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 Nf6 2. Nc3 e5 3. Bc4 Nxe4 4. Bxf7+ Kxf7 5. Nxe4 d6 6. Nf3 Be7 7. d4 Re8 8. 0-0 h6 9. dxe5 dxe5 10. Nxe5+ Kg8 11. Qh5 Rf8 12. Bxh6 Qe8 13. Qg6 Qxg6 14. Nxg6 Re8 15. Rfe1 Nc6 16. Nxe7+ Rxe7 17. Bg5 Rf7 18. Rad1 Bf5 19. c3 b6 20. f3 Kf8 21. g4 Bd7 22. Kg2 Re8 23. h3 Ne5 24. f4 Nc4 25. b3 Na3 26. Ng3 Rc8 27. Re2 Nb5 28. Red2 Nd6 29. c4 Bc6+ 30. Kf2 Re8 31. Re2 Rc8 32. h4 Ne8 33. h5 Bd7 34. f5 Nf6 35. Bxf6 gxf6 36. Red2 Ke8 37. Ne2 c5 38. Nf4 Rc7 39. Nd5 Rb7 40. Re1+ Kf8 41. Kg3 Bc6 42. Re6 Bxd5 43. Rxd5 Kg7 44. Rdd6 Rb8 45. h6+ Kxh6 46. Rxf6+ Rxf6 47. Rxf6+ Kg7 48. g5 b5 49. Ra6 bxc4 50. Rxa7+ Kg8 51. f6 cxb3 52. axb3 Rxb3+ 53. Kf4 Rb8 54. g6 Rc8 55. Rg7+ Kh8 56. Rh7+ Kg8 57. f7+ 1-0

[Event "GER North-chT U16"]
[Site "Verden an der Aller"]
[Date "2008.09.12"]
[Round "1.1"]
[White "Rublack, Valentin"]
[Black "Wierum, Colin"]
[Result "0-1"]
[ECO "B06"]
[WhiteElo "1515"]
[BlackElo "1822"]
[PlyCount "50"]
[EventDate "2008.09.12"]
[EventType "team-swiss"]
[EventRounds "6"]
[EventCountry "GER"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]
[WhiteTeam "Kiel Doppelbauer"]
[BlackTeam "Hagen"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 g6 2. d4 Bg7 3. c3 d6 4. Bf4 Nf6 5. Nd2 0-0 6. Qb3 c6 7. 0-0-0 b5 8. d5 cxd5 9. exd5 a6 10. f3 Nbd7 11. Ne4 Bb7 12. Ne2 Rc8 13. Bg5 Qa5 14. Kb1 Rc7 15. g3 Rfc8 16. Bh3 Re8 17. Nf4 Rc4 18. Rhe1 Nxe4 19. Rxe4 Nc5 20. Qc2 Nxe4 21. fxe4 h6 22. e5 hxg5 23. Nxg6 dxe5 24. Qf5 Qb6 25. Rf1 Qxg6 0-1

[Event "GER North-chT U16"]
[Site "Verden an der Aller"]
[Date "2008.09.12"]
[Round "2.1"]
[White "Wierum, Colin"]
[Black "Matthes, Henning"]
[Result "1-0"]
[ECO "C25"]
[WhiteElo "1822"]
[BlackElo "1442"]
[PlyCount "57"]
[EventDate "2008.09.12"]
[EventType "team-swiss"]
[EventRounds "6"]
[EventCountry "GER"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]
[WhiteTeam "Hagen"]
[BlackTeam "Lehrte"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 e5 2. Bc4 Bc5 3. Nc3 Nc6 4. d3 d6 5. Nge2 Bd7 6. Bd2 Nf6 7. h3 h6 8. f4 exf4 9. Bxf4 Nd4 10. Qd2 a6 11. 0-0-0 b5 12. Bb3 a5 13. Nxd4 Bxd4 14. Ne2 Bc5 15. d4 Bb6 16. e5 dxe5 17. dxe5 Ne4 18. Qd5 0-0 19. Qxe4 a4 20. Bd5 Rb8 21. e6 Bxe6 22. Bxe6 Qxd1+ 23. Rxd1 fxe6 24. Qxe6+ Kh8 25. Bxh6 Rbe8 26. Bxg7+ Kxg7 27. Rd7+ Kh8 28. Qh6+ Kg8 29. Rg7# 1-0

[Event "Niedersachsen-chT U16"]
[Site "Verden an der Aller"]
[Date "2008.05.04"]
[Round "5.1"]
[White "Wierum, Colin"]
[Black "Schippa, Robert"]
[Result "1-0"]
[ECO "B80"]
[WhiteElo "1904"]
[BlackElo "1296"]
[PlyCount "34"]
[EventDate "2008.05.01"]
[EventType "team"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Bg5 h6 7. Be3 a6 8. g3 b5 9. Bg2 Bb7 10. a3 Nbd7 11. 0-0 Nc5 12. f3 Ncd7 13. Qd2 Be7 14. Rad1 Ne5 15. f4 Neg4 16. h3 Nxe3 17. Qxe3 Rc8 1-0

[Event "Niedersachsen-chT U16"]
[Site "Verden an der Aller"]
[Date "2008.05.03"]
[Round "4.1"]
[White "Zwick, Felix"]
[Black "Wierum, Colin"]
[Result "1/2-1/2"]
[ECO "A36"]
[WhiteElo "1524"]
[BlackElo "1904"]
[PlyCount "30"]
[EventDate "2008.05.01"]
[EventType "team"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 g6 2. g3 Bg7 3. Bg2 c5 4. c4 Nc6 5. Nc3 e5 6. Nge2 Nge7 7. 0-0 0-0 8. d3 d6 9. f4 f5 10. Rb1 Be6 11. a3 Qd7 12. b4 Rad8 13. Be3 b6 14. Qd2 Nd4 15. b5 Rfe8 1/2-1/2

[Event "Niedersachsen-chT U16"]
[Site "Verden an der Aller"]
[Date "2008.05.02"]
[Round "2.1"]
[White "Schulz, Jens"]
[Black "Wierum, Colin"]
[Result "1-0"]
[ECO "B34"]
[WhiteElo "1984"]
[BlackElo "1904"]
[PlyCount "63"]
[EventDate "2008.05.01"]
[EventType "team"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nc3 c5 4. Be3 Nc6 5. Nf3 cxd4 6. Nxd4 Nf6 7. Nxc6 bxc6 8. e5 Ng8 9. f4 Nh6 10. Qf3 d5 11. exd6 Qxd6 12. Bb5 Bb7 13. 0-0 0-0 14. Ba4 Nf5 15. Bf2 Nd4 16. Bxd4 Qxd4+ 17. Kh1 Qb4 18. Bxc6 Bxc6 19. Qxc6 Qxb2 20. Nd5 e6 21. Ne3 Qa3 22. Rae1 Qxa2 23. g4 Rac8 24. Qe4 Rfd8 25. f5 exf5 26. gxf5 Re8 27. Qb7 Rb8 28. Qd7 Rbd8 29. Qb7 Bd4 30. fxg6 hxg6 31. c4 f6 32. Nf5 1-0

[Event "Niedersachsen-chT U16"]
[Site "Verden an der Aller"]
[Date "2008.05.02"]
[Round "3.1"]
[White "Wierum, Colin"]
[Black "Mueller, Marius"]
[Result "1-0"]
[ECO "B33"]
[WhiteElo "1904"]
[BlackElo "1523"]
[PlyCount "67"]
[EventDate "2008.05.01"]
[EventType "team"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6 8. Na3 b5 9. Nd5 Be7 10. Bxf6 Bxf6 11. g3 Ne7 12. Bg2 Nxd5 13. Qxd5 Be6 14. Qd1 Rb8 15. c3 g6 16. Nc2 Bg7 17. 0-0 0-0 18. Ne3 f5 19. exf5 gxf5 20. f4 Qb6 21. Qd2 Bh6 22. Kh1 Kh8 23. Nd5 Qa7 24. Qe2 Bg7 25. Rad1 a5 26. a3 Qf7 27. Ne3 exf4 28. gxf4 Rfd8 29. Qd3 b4 30. Qa6 bxc3 31. bxc3 Bxc3 32. Rxd6 Rxd6 33. Qxd6 Qe8 34. Rc1 1-0

[Event "Niedersachsen-chT U16"]
[Site "Verden an der Aller"]
[Date "2008.05.01"]
[Round "1.1"]
[White "Wierum, Colin"]
[Black "Kessler, Marcel"]
[Result "1-0"]
[ECO "C25"]
[WhiteElo "1904"]
[BlackElo "1745"]
[PlyCount "46"]
[EventDate "2008.05.01"]
[EventType "team"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 e5 2. Bc4 Bc5 3. Nc3 Nc6 4. d3 d6 5. Be3 Bb6 6. Qd2 Be6 7. Bxe6 fxe6 8. 0-0-0 Ba5 9. Nge2 b5 10. Kb1 b4 11. Na4 b3 12. Nac3 bxa2+ 13. Ka1 Nf6 14. f4 d5 15. exd5 exd5 16. fxe5 Ng4 17. d4 Nb4 18. Bg5 Nxc2+ 19. Qxc2 Qxg5 20. Qa4+ Kd8 21. Qxa5 Nf2 22. Qxd5+ Ke7 23. Qc5+ Kd7 1-0

[Event "Niedersachsen-ch U16"]
[Site "Rotenburg"]
[Date "2008.03.20"]
[Round "9"]
[White "Dorn, Carina"]
[Black "Wierum, Colin"]
[Result "0-1"]
[ECO "A65"]
[WhiteElo "1749"]
[BlackElo "1905"]
[PlyCount "74"]
[EventDate "2008.03.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. d4 c5 2. d5 Nf6 3. c4 g6 4. Nc3 Bg7 5. e4 0-0 6. Bd3 d6 7. Nge2 e6 8. 0-0 exd5 9. cxd5 Re8 10. f3 a6 11. Bf4 b5 12. Qd2 Qc7 13. Rae1 Nbd7 14. Kh1 Bb7 15. b3 Rac8 16. Bxb5 Qb6 17. Bc4 Ne5 18. Nc1 Nfd7 19. Nd3 Nxd3 20. Bxd3 Ne5 21. Na4 Qc7 22. Rb1 Re7 23. Nb2 Rce8 24. Nc4 Bc8 25. Nxe5 Bxe5 26. Bxe5 Rxe5 27. Rfc1 Qe7 28. b4 cxb4 29. Qxb4 f5 30. h3 fxe4 31. fxe4 Qh4 32. Qxd6 Bxh3 33. Kg1 Bxg2 34. Kxg2 Rg5+ 35. Kf3 Qh3+ 36. Ke2 Rg2+ 37. Ke1 Qe3+ 0-1

[Event "Niedersachsen-ch U16"]
[Site "Rotenburg"]
[Date "2008.03.20"]
[Round "8"]
[White "Wierum, Colin"]
[Black "Guennigmann, Manuel"]
[Result "0-1"]
[ECO "B94"]
[WhiteElo "1905"]
[BlackElo "2010"]
[PlyCount "72"]
[EventDate "2008.03.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 Nbd7 7. g3 e6 8. Bg2 Be7 9. 0-0 0-0 10. Kh1 Ne5 11. b3 Bd7 12. f4 Nc6 13. Nce2 Rc8 14. c4 Re8 15. Rc1 Qa5 16. Nc3 h6 17. Bxf6 Bxf6 18. Nde2 Rcd8 19. Qe1 b5 20. cxb5 axb5 21. Rd1 b4 22. Na4 Be7 23. Nd4 Nxd4 24. Rxd4 Bxa4 25. bxa4 Qxa4 26. Rxb4 Qxa2 27. Qb1 Qa5 28. Rc1 Qh5 29. Qc2 Qg6 30. Rb5 h5 31. e5 Qxc2 32. Rxc2 dxe5 33. h3 exf4 34. gxf4 g6 35. Rb7 Rd1+ 36. Kh2 Bd6 0-1

[Event "Niedersachsen-ch U16"]
[Site "Rotenburg"]
[Date "2008.03.18"]
[Round "5"]
[White "Frank, Christian"]
[Black "Wierum, Colin"]
[Result "1-0"]
[ECO "A43"]
[WhiteElo "1802"]
[BlackElo "1905"]
[PlyCount "79"]
[EventDate "2008.03.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. d4 c5 2. d5 g6 3. e4 d6 4. Be2 Bg7 5. c3 Nf6 6. Nd2 0-0 7. Ngf3 Re8 8. Bb5 Bd7 9. Bxd7 Nbxd7 10. a4 e6 11. dxe6 Rxe6 12. Ng5 Re8 13. Qb3 Re7 14. 0-0 h6 15. Nh3 Qb6 16. Qc4 Ne5 17. Qa2 Rd8 18. Nf4 g5 19. Nd5 Nxd5 20. Qxd5 Ng4 21. Qf5 Nf6 22. c4 Qc6 23. f3 Qd7 24. Qxd7 Nxd7 25. Ra2 Ne5 26. Rd1 Nc6 27. Nf1 Kf8 28. Ne3 Bd4 29. Kf1 Bxe3 30. Bxe3 Nb4 31. Ra3 Nc2 32. Rad3 Nxe3+ 33. Rxe3 Re6 34. Red3 Ke7 35. Rd5 Re5 36. Rxe5+ dxe5 37. Rd5 f6 38. Rxc5 b6 39. Rd5 Rd6 40. Ke2 1-0

[Event "Niedersachsen-ch U16"]
[Site "Rotenburg"]
[Date "2008.03.18"]
[Round "6"]
[White "Wierum, Colin"]
[Black "Kessler, Marcel"]
[Result "1/2-1/2"]
[ECO "C54"]
[WhiteElo "1905"]
[BlackElo "1770"]
[PlyCount "66"]
[EventDate "2008.03.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. e5 d5 7. Bb5 Ne4 8. cxd4 Bb4+ 9. Nbd2 0-0 10. 0-0 Nxd2 11. Bxd2 Bxd2 12. Qxd2 Ne7 13. Rac1 c6 14. Be2 Qb6 15. b4 Bf5 16. Rc5 a6 17. a4 Ra7 18. Rfc1 Rfa8 19. Ne1 h6 20. Bd3 Bxd3 21. Nxd3 Kf8 22. f4 Nf5 23. Qf2 h5 24. g3 g6 25. h3 h4 26. g4 Ng3 27. Qe3 Ne4 28. R5c2 a5 29. Nc5 Qxb4 30. Nxe4 dxe4 31. Rc4 Qb2 32. Qxe4 Qb3 33. Qg2 Qe3+ 1/2-1/2

[Event "Niedersachsen-ch U16"]
[Site "Rotenburg"]
[Date "2008.03.17"]
[Round "4"]
[White "Chmelev, Alex"]
[Black "Wierum, Colin"]
[Result "1/2-1/2"]
[ECO "B03"]
[WhiteElo "1802"]
[BlackElo "1905"]
[PlyCount "80"]
[EventDate "2008.03.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. c4 Nb6 4. d4 d6 5. f4 dxe5 6. fxe5 Nc6 7. Be3 e6 8. Nc3 Be7 9. Nf3 0-0 10. Be2 f6 11. exf6 Bxf6 12. 0-0 Bd7 13. Ne4 Be7 14. a3 Be8 15. Nfg5 Rxf1+ 16. Bxf1 Bxg5 17. Nxg5 Qe7 18. Qd2 Rd8 19. Nf3 Bg6 20. Bg5 Nxd4 21. Nxd4 Rxd4 22. Qxd4 Qxg5 23. Rd1 h6 24. Qd8+ Qxd8 25. Rxd8+ Kh7 26. b3 Bc2 27. a4 Bxb3 28. Bd3+ g6 29. a5 Nxc4 30. Rd7+ Kg8 31. Bxc4 Bxc4 32. Rxc7 Bd5 33. Kf2 a6 34. g3 Kf8 35. Ke3 e5 36. Kd3 Kg8 37. Kc3 Kf8 38. Kb4 Bc6 39. Kc5 e4 40. Kd4 Kg8 1/2-1/2

[Event "Niedersachsen-ch U16"]
[Site "Rotenburg"]
[Date "2008.03.16"]
[Round "2"]
[White "Gersch, Andre"]
[Black "Wierum, Colin"]
[Result "1/2-1/2"]
[ECO "B35"]
[WhiteElo "1825"]
[BlackElo "1905"]
[PlyCount "67"]
[EventDate "2008.03.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Be3 c5 4. Nf3 cxd4 5. Nxd4 Nc6 6. Nc3 Nf6 7. Bc4 0-0 8. f3 Qb6 9. Ncb5 a6 10. Nf5 Qa5+ 11. Bd2 Qd8 12. Nh6+ Bxh6 13. Bxh6 axb5 14. Bxf8 bxc4 15. Bh6 d5 16. exd5 Nxd5 17. Qe2 b5 18. a3 Qb6 19. Rd1 Be6 20. h4 Nd4 21. Qf2 Nf5 22. Qxb6 Nxb6 23. Bf4 Nd5 24. Be5 f6 25. Bd4 Nxd4 26. Rxd4 Bf7 27. Kf2 e5 28. Rd2 c3 29. Rd3 cxb2 30. Rb1 b4 31. axb4 Nxb4 32. Rd6 Nxc2 33. Rxb2 Nd4 34. Rxf6 1/2-1/2

[Event "Niedersachsen-ch U16"]
[Site "Rotenburg"]
[Date "2008.03.16"]
[Round "3"]
[White "Wierum, Colin"]
[Black "Kaiser, Jonas"]
[Result "1-0"]
[ECO "C01"]
[WhiteElo "1905"]
[BlackElo "1786"]
[PlyCount "95"]
[EventDate "2008.03.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Bd3 Nc6 5. Ne2 Nb4 6. Nbc3 Bd6 7. Bf4 Ne7 8. f3 Nxd3+ 9. Qxd3 Bf5 10. Qd2 Qd7 11. 0-0-0 0-0-0 12. g4 Bg6 13. h4 h5 14. Bxd6 Qxd6 15. Nf4 c6 16. Rde1 Rde8 17. Re2 Qd7 18. Rhe1 hxg4 19. fxg4 Rxh4 20. Nxg6 fxg6 21. Qg5 Rxg4 22. Rxe7 Rxg5 23. Rxe8+ Kc7 24. R8e7 Rg4 25. Rxd7+ Kxd7 26. Ne2 Re4 27. Kd2 g5 28. c3 b6 29. Ng3 Rf4 30. Rf1 Rg4 31. Ne2 Ke7 32. Rg1 Rh4 33. Rxg5 Kf6 34. Rg2 g5 35. Ng3 g4 36. Nf1 Kg5 37. Rh2 g3 38. Rxh4 g2 39. Nh2 Kxh4 40. Nf3+ Kg3 41. Ke2 c5 42. Ng1 cxd4 43. cxd4 b5 44. Ke3 a5 45. Ne2+ Kg4 46. Kf2 Kf5 47. Kf3 b4 48. b3 1-0

[Event "Niedersachsen-ch U16"]
[Site "Rotenburg"]
[Date "2008.03.15"]
[Round "1"]
[White "Wierum, Colin"]
[Black "Hurink, Maarten"]
[Result "1/2-1/2"]
[ECO "B01"]
[WhiteElo "1905"]
[BlackElo "1662"]
[PlyCount "34"]
[EventDate "2008.03.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. d4 c6 5. Bc4 Nf6 6. Nge2 Bf5 7. 0-0 e6 8. a3 Nbd7 9. Bf4 Be7 10. Re1 0-0 11. Ng3 Bg6 12. Nce4 Nxe4 13. Nxe4 Bxe4 14. Rxe4 Nf6 15. Re2 Rfd8 16. c3 Rd7 17. Qc2 Rc8 1/2-1/2

[Event "Niedersachsen-ch"]
[Site "Verden"]
[Date "2008.01.06"]
[Round "7"]
[White "Wierum, Colin"]
[Black "Hilgendorff, Finn"]
[Result "1/2-1/2"]
[ECO "B33"]
[WhiteElo "1905"]
[BlackElo "2031"]
[PlyCount "68"]
[EventDate "2008.01.03"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6 8. Na3 b5 9. Nd5 Be7 10. Bxf6 Bxf6 11. g3 0-0 12. Bg2 Bb7 13. 0-0 Bg5 14. c3 Ne7 15. Nxe7+ Bxe7 16. Nc2 f5 17. exf5 Bxg2 18. Kxg2 d5 19. Re1 Bf6 20. Nb4 d4 21. Qb3+ Kh8 22. Rad1 Qc8 23. cxd4 exd4 24. Re6 a5 25. Nd5 a4 26. Qf3 Ra6 27. Nxf6 Rxe6 28. fxe6 Qxe6 29. Rxd4 gxf6 30. Qd5 Qb6 31. Rb4 Rb8 32. Qf7 Qc6+ 33. Kh3 Rg8 34. Rh4 Rg7 1/2-1/2

[Event "Niedersachsen-ch"]
[Site "Verden"]
[Date "2008.01.05"]
[Round "6"]
[White "Langenfeld, Olaf"]
[Black "Wierum, Colin"]
[Result "1/2-1/2"]
[ECO "D02"]
[WhiteElo "1923"]
[BlackElo "1905"]
[PlyCount "107"]
[EventDate "2008.01.03"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. Nf3 d5 2. e3 c6 3. d4 e6 4. Bd3 f5 5. Ne5 Nf6 6. 0-0 Bd6 7. f4 0-0 8. Qe2 Ne4 9. Nd2 Nd7 10. Ndf3 c5 11. c3 c4 12. Bc2 b5 13. Bd2 a5 14. a3 Ndf6 15. Kh1 Bd7 16. Be1 Be8 17. Bh4 Qc7 18. Ng5 Nxg5 19. Bxg5 Ne4 20. Bh4 Bf7 21. g4 b4 22. cxb4 axb4 23. gxf5 exf5 24. Bxe4 fxe4 25. axb4 Bxb4 26. Rxa8 Rxa8 27. Rg1 Ra2 28. Qg4 Bf8 29. f5 Rxb2 30. Bg3 Qb7 31. Bf4 Be8 32. Bh6 Rb1 33. f6 Rxg1+ 34. Qxg1 g6 35. Bxf8 Kxf8 36. Qf1 c3 37. Qa1 Qb2 38. Qa7 Qc1+ 39. Kg2 Qd2+ 40. Kg3 Qxe3+ 41. Kg2 Qg5+ 42. Kh3 Qxf6 43. Qc5+ Qe7 44. Qxc3 Bd7+ 45. Kg2 Qg5+ 46. Kf1 Bb5+ 47. Kf2 Qf4+ 48. Ke1 e3 49. Qc5+ Kg7 50. Qc7+ Kf6 51. Qf7+ Kg5 52. Nf3+ Kg4 53. Ne5+ Kg5 54. Nf3+ 1/2-1/2

[Event "Niedersachsen-ch"]
[Site "Verden"]
[Date "2008.01.05"]
[Round "5"]
[White "Wierum, Colin"]
[Black "Pfeifer, Frank"]
[Result "1-0"]
[ECO "B02"]
[WhiteElo "1905"]
[BlackElo "1735"]
[PlyCount "51"]
[EventDate "2008.01.03"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. e4 Nf6 2. Nc3 d5 3. e5 Nfd7 4. d4 Nb6 5. Bd3 Nc6 6. Nce2 Bg4 7. c3 e6 8. f3 Bh5 9. Ng3 Bg6 10. f4 f5 11. exf6 Qxf6 12. Nf3 Bd6 13. 0-0 Bxd3 14. Qxd3 0-0-0 15. Ne5 Ne7 16. a4 Nf5 17. a5 Nd7 18. a6 b6 19. Nc6 Rdf8 20. Nxa7+ Kd8 21. Nc6+ Ke8 22. a7 Kf7 23. Ne5+ Ke7 24. Nxf5+ Qxf5 25. Qb5 Nxe5 26. fxe5 1-0

[Event "Niedersachsen-ch"]
[Site "Verden"]
[Date "2008.01.04"]
[Round "4"]
[White "Eickhoff, Hermann"]
[Black "Wierum, Colin"]
[Result "1-0"]
[ECO "B50"]
[WhiteElo "2077"]
[BlackElo "1905"]
[PlyCount "65"]
[EventDate "2008.01.03"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. e4 g6 2. Nf3 Bg7 3. Nc3 c5 4. Bc4 d6 5. 0-0 Nf6 6. d3 0-0 7. Bg5 Nc6 8. h3 Be6 9. Bxe6 fxe6 10. Qd2 d5 11. Bh6 d4 12. Ne2 e5 13. Bxg7 Kxg7 14. Ng5 Qd6 15. f4 exf4 16. Nxf4 Nd8 17. Rae1 e5 18. Nd5 Nxd5 19. Rxf8 Kxf8 20. exd5 Kg7 21. Rf1 h6 22. Ne4 Qxd5 23. Qf2 Qf7 24. Qg3 Qe8 25. Qh4 b6 26. Qf6+ Kh7 27. Nd6 Qe6 28. Qf8 Qg8 29. Qe7+ Qg7 30. Qe8 Rb8 31. Nf7 Nxf7 32. Qxb8 Ng5 33. Qe8 1-0

[Event "Niedersachsen-ch"]
[Site "Verden"]
[Date "2008.01.04"]
[Round "3"]
[White "Wierum, Colin"]
[Black "Duessler, Stefanie"]
[Result "1-0"]
[ECO "C28"]
[WhiteElo "1905"]
[BlackElo "1632"]
[PlyCount "81"]
[EventDate "2008.01.03"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Bc4 Bc5 3. Nc3 d6 4. d3 Nc6 5. Be3 Nf6 6. Bxc5 dxc5 7. Nge2 Qe7 8. Qd2 Be6 9. Bxe6 Qxe6 10. f4 0-0-0 11. 0-0-0 Nd4 12. f5 Qa6 13. Kb1 Rd6 14. Nxd4 Rxd4 15. Qg5 Rg8 16. Qg3 Nd7 17. Qe3 f6 18. g4 h6 19. h4 Qb6 20. Nd5 Qd6 21. g5 hxg5 22. hxg5 c6 23. Nc3 Qe7 24. Rdg1 Qf7 25. Qg3 Re8 26. Rh7 Nf8 27. Rh4 Rdd8 28. Rg4 Qc7 29. Qh4 Qd6 30. Ne2 c4 31. dxc4 Qd2 32. Nc3 Qd4 33. gxf6 gxf6 34. Qxf6 Nh7 35. Qh6 Rh8 36. Rg7 Ng5 37. Qxg5 Rh2 38. Qe7 Rd7 39. Qxd7+ Qxd7 40. Rxd7 Kxd7 41. b3 1-0

[Event "Niedersachsen-ch"]
[Site "Verden"]
[Date "2008.01.03"]
[Round "2"]
[White "Kyas, Marcel"]
[Black "Wierum, Colin"]
[Result "1-0"]
[ECO "B06"]
[WhiteElo "1978"]
[BlackElo "1905"]
[PlyCount "23"]
[EventDate "2008.01.03"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nc3 c5 4. Be3 cxd4 5. Bxd4 e5 6. Bc5 Nf6 7. Qd6 Nc6 8. Nb5 Bf8 9. Qxf8+ Rxf8 10. Nd6+ Ke7 11. Nf5+ Ke8 12. Ng7# 1-0

[Event "Niedersachsen-ch"]
[Site "Verden"]
[Date "2008.01.03"]
[Round "1"]
[White "Wierum, Colin"]
[Black "Paetzold, Florian"]
[Result "1-0"]
[ECO "C01"]
[WhiteElo "1905"]
[BlackElo "1117"]
[PlyCount "39"]
[EventDate "2008.01.03"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Bd3 c5 5. dxc5 Bxc5 6. Nc3 Nf6 7. Bg5 Qb6 8. Qe2+ Kd8 9. 0-0-0 Bxf2 10. Nxd5 Qc5 11. b4 Qxd5 12. Bb5 Bd4 13. Nf3 Bg4 14. Rxd4 Qxd4 15. Rd1 Qxd1+ 16. Qxd1+ Ke7 17. Qe2+ Be6 18. Nd4 Re8 19. Bxe8 Kxe8 20. Nxe6 1-0

[Event "GER-ch U25"]
[Site "Willingen"]
[Date "2007.06.01"]
[Round "9"]
[White "Mueller, Johannes"]
[Black "Wierum, Colin"]
[Result "1-0"]
[ECO "B01"]
[WhiteElo "1612"]
[BlackElo "1650"]
[PlyCount "95"]
[EventDate "2007.05.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 118 Extra"]
[Source "ChessBase"]
[SourceDate "2007.07.04"]
[SourceVersion "1"]
[SourceVersionDate "2007.07.04"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. d4 Nf6 5. Bd2 Qb6 6. Bc1 Bg4 7. Be2 Bxe2 8. Ngxe2 Nc6 9. Rb1 0-0-0 10. Be3 e5 11. Na4 Qa5+ 12. c3 exd4 13. b4 Qd5 14. Nxd4 Nxd4 15. Bxd4 Qxg2 16. Ke2 Bd6 17. Kd2 Ne4+ 18. Kc2 Nxf2 19. Bxf2 Qxf2+ 20. Kb3 Be5 21. Qg4+ f5 22. Qc4 Rhe8 23. Rbd1 Rxd1 24. Rxd1 Bf6 25. Qf7 Qe2 26. Qd7+ Kb8 27. Nc5 Qe7 28. Qxf5 Qf7+ 29. c4 Re3+ 30. Rd3 Rxd3+ 31. Qxd3 Qg6 32. Qxg6 hxg6 33. h3 b6 34. Ne4 Kc8 35. b5 Kd7 36. Kc2 c6 37. a4 c5 38. Kd3 Ke6 39. Ke3 Ke5 40. a5 Bd8 41. a6 Be7 42. Nf2 Bg5+ 43. Kd3 Kf4 44. Ng4 Bf6 45. Ne3 Be5 46. Nd5+ Kf3 47. Nxb6 Bc7 48. Nd7 1-0

[Event "GER-ch U25"]
[Site "Willingen"]
[Date "2007.05.31"]
[Round "8"]
[White "Wierum, Colin"]
[Black "Billing, Christian"]
[Result "0-1"]
[ECO "C01"]
[WhiteElo "1650"]
[BlackElo "2118"]
[PlyCount "62"]
[EventDate "2007.05.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 118 Extra"]
[Source "ChessBase"]
[SourceDate "2007.07.04"]
[SourceVersion "1"]
[SourceVersionDate "2007.07.04"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Bd3 Bd6 5. Ne2 Ne7 6. Nbc3 c6 7. Bf4 Be6 8. Qd2 b5 9. 0-0-0 a5 10. f3 a4 11. Rde1 Bb4 12. g4 Nd7 13. h4 Nb6 14. g5 Ba5 15. a3 b4 16. axb4 Bxb4 17. Be5 0-0 18. h5 Nc4 19. Bxc4 dxc4 20. Qf4 a3 21. bxa3 Bxa3+ 22. Kd1 Nd5 23. Nxd5 cxd5 24. h6 g6 25. Ng3 Bb4 26. c3 Bxc3 27. Bc7 Qe7 28. Bd6 Qb7 29. Qf6 Qb1+ 30. Ke2 Qd3+ 31. Kf2 Bxe1+ 0-1

[Event "GER-ch U25"]
[Site "Willingen"]
[Date "2007.05.30"]
[Round "7"]
[White "Holle, Eric"]
[Black "Wierum, Colin"]
[Result "0-1"]
[ECO "B01"]
[WhiteElo "1118"]
[BlackElo "1650"]
[PlyCount "37"]
[EventDate "2007.05.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 118 Extra"]
[Source "ChessBase"]
[SourceDate "2007.07.04"]
[SourceVersion "1"]
[SourceVersionDate "2007.07.04"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. Nf3 Nf6 5. d4 Bg4 6. Bd2 Nc6 7. Bb5 0-0-0 8. Bxc6 bxc6 9. h3 Bh5 10. Be3 e5 11. g4 exd4 12. Nxd4 c5 13. gxh5 cxd4 14. Bxd4 Bc5 15. Qf3 Bxd4 16. 0-0-0 Kb8 17. Rd3 Bxc3 18. Rxc3 Qd5 19. Re1 0-1

[Event "GER-ch U25"]
[Site "Willingen"]
[Date "2007.05.29"]
[Round "5"]
[White "Schaefer, Simon"]
[Black "Wierum, Colin"]
[Result "0-1"]
[ECO "A86"]
[WhiteElo "1478"]
[BlackElo "1650"]
[PlyCount "74"]
[EventDate "2007.05.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 118 Extra"]
[Source "ChessBase"]
[SourceDate "2007.07.04"]
[SourceVersion "1"]
[SourceVersionDate "2007.07.04"]
[SourceQuality "1"]

1. c4 f5 2. Nc3 Nf6 3. g3 g6 4. Bg2 Bg7 5. e3 0-0 6. d4 d6 7. Nge2 Qe8 8. 0-0 e5 9. dxe5 Qxe5 10. Nd5 Nxd5 11. Qxd5+ Qxd5 12. Bxd5+ Kh8 13. Rb1 c6 14. Bg2 Be6 15. b3 Na6 16. Bb2 Rfd8 17. Bxg7+ Kxg7 18. Rfd1 Nc7 19. Rd2 Rd7 20. Rbd1 Rad8 21. Nf4 Bf7 22. Kf1 g5 23. Ne2 Kf6 24. Nd4 d5 25. cxd5 Bxd5 26. Bxd5 Nxd5 27. Kg1 Nc3 28. Rc1 Ne4 29. Rdc2 c5 30. Nf3 b6 31. Kg2 h6 32. h3 h5 33. Rc4 g4 34. hxg4 hxg4 35. Nh2 Rd2 36. Nxg4+ Kg5 37. Kf3 fxg4+ 0-1

[Event "GER-ch U25"]
[Site "Willingen"]
[Date "2007.05.29"]
[Round "6"]
[White "Wierum, Colin"]
[Black "Schneider, Christian"]
[Result "0-1"]
[ECO "B13"]
[WhiteElo "1650"]
[BlackElo "2081"]
[PlyCount "64"]
[EventDate "2007.05.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 118 Extra"]
[Source "ChessBase"]
[SourceDate "2007.07.04"]
[SourceVersion "1"]
[SourceVersionDate "2007.07.04"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. Bd3 Nf6 5. Ne2 Nc6 6. Nbc3 e6 7. Bf4 a6 8. Qd2 Bd6 9. 0-0-0 Qc7 10. Bxd6 Qxd6 11. f3 b5 12. Rde1 Bb7 13. g4 0-0-0 14. h4 Nd7 15. f4 Nb6 16. f5 e5 17. dxe5 Nxe5 18. Nd4 Nbc4 19. Bxc4 dxc4 20. Rhg1 Rhe8 21. Nce2 Qc5 22. Qf4 c3 23. bxc3 Nc4 24. Kb1 Re3 25. Ka1 Qa3 26. Rb1 Rxc3 27. Qc1 Qxc1 28. Rbxc1 Re3 29. Rcd1 Rde8 30. Nf4 R3e4 31. Nh5 Ne3 32. Rd2 Rxd4 0-1

[Event "GER-ch U25"]
[Site "Willingen"]
[Date "2007.05.28"]
[Round "3"]
[White "Hoegy, Kevin"]
[Black "Wierum, Colin"]
[Result "1-0"]
[ECO "A00"]
[WhiteElo "2010"]
[BlackElo "1650"]
[PlyCount "51"]
[EventDate "2007.05.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 118 Extra"]
[Source "ChessBase"]
[SourceDate "2007.07.04"]
[SourceVersion "1"]
[SourceVersionDate "2007.07.04"]
[SourceQuality "1"]

1. e4 d5 2. Nc3 d4 3. Nce2 e5 4. Ng3 Bd6 5. Bc4 Nf6 6. Nf3 Nbd7 7. 0-0 Nb6 8. Bb3 c5 9. d3 Qc7 10. Ng5 Rf8 11. Nh5 Nxh5 12. Qxh5 h6 13. Nh3 Bd7 14. f4 Bxh3 15. fxe5 Bxe5 16. Qxh3 Nd7 17. Bxf7+ Kd8 18. g3 Nf6 19. Bb3 b5 20. Bf4 Rb8 21. Bxe5 Qxe5 22. Rf5 Qc7 23. e5 Nd7 24. Rxf8+ Nxf8 25. Rf1 Ng6 26. Qe6 1-0

[Event "GER-ch U25"]
[Site "Willingen"]
[Date "2007.05.28"]
[Round "4"]
[White "Wierum, Colin"]
[Black "Eidner, Falk"]
[Result "0-1"]
[ECO "B76"]
[WhiteElo "1650"]
[BlackElo "1951"]
[PlyCount "72"]
[EventDate "2007.05.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 118 Extra"]
[Source "ChessBase"]
[SourceDate "2007.07.04"]
[SourceVersion "1"]
[SourceVersionDate "2007.07.04"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. f3 0-0 8. Qd2 d6 9. 0-0-0 Nxd4 10. Bxd4 Be6 11. h4 h5 12. g3 Qa5 13. Kb1 Rfc8 14. Bh3 Bxh3 15. Rxh3 Rc4 16. Bxf6 Bxf6 17. Nd5 Qxd2 18. Nxf6+ exf6 19. Rxd2 Rd8 20. Rh1 Kf8 21. Rhd1 Ke7 22. c3 Ke6 23. Kc2 Rc7 24. Rd5 Rdd7 25. R1d4 Rc5 26. Rxc5 dxc5 27. Rxd7 Kxd7 28. Kd3 Kd6 29. Kc4 g5 30. f4 g4 31. a4 Kc6 32. b4 b6 33. bxc5 bxc5 34. a5 a6 35. e5 f5 36. Kb3 Kd5 0-1

[Event "GER-ch U25"]
[Site "Willingen"]
[Date "2007.05.27"]
[Round "2"]
[White "Wierum, Colin"]
[Black "Menzel, Michael"]
[Result "1-0"]
[ECO "B80"]
[WhiteElo "1650"]
[BlackElo "1930"]
[PlyCount "91"]
[EventDate "2007.05.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 118 Extra"]
[Source "ChessBase"]
[SourceDate "2007.07.04"]
[SourceVersion "1"]
[SourceVersionDate "2007.07.04"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 b5 7. f3 Bb7 8. Qd2 e6 9. h4 Be7 10. h5 d5 11. e5 Nfd7 12. f4 Nc5 13. f5 b4 14. Nce2 Ne4 15. Qd3 Nd7 16. Bf4 Ndc5 17. Qh3 Qd7 18. Qg4 Rg8 19. Ng3 0-0-0 20. Nxe4 Nxe4 21. Bd3 Bc5 22. fxe6 fxe6 23. Be3 Rde8 24. 0-0-0 Qc7 25. Kb1 Qxe5 26. Nf3 Qc7 27. Bxe4 dxe4 28. Bf4 Qb6 29. Ne5 Re7 30. Nc4 Qc6 31. Nd6+ Bxd6 32. Rxd6 Qc4 33. Rhd1 Bc6 34. R1d4 Qc5 35. Bg5 Ree8 36. Rxe6 Kb7 37. Rdd6 Bd5 38. Rxe8 Rxe8 39. Qd7+ Qc7 40. Rxd5 Qxd7 41. Rxd7+ Kc6 42. Rxg7 e3 43. Re7 Rg8 44. Bxe3 Rxg2 45. Rxh7 Re2 46. Bc1 1-0

[Event "GER-ch U25"]
[Site "Willingen"]
[Date "2007.05.26"]
[Round "1"]
[White "Helmich, Florian"]
[Black "Wierum, Colin"]
[Result "0-1"]
[ECO "A85"]
[WhiteElo "953"]
[BlackElo "1650"]
[PlyCount "57"]
[EventDate "2007.05.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 118 Extra"]
[Source "ChessBase"]
[SourceDate "2007.07.04"]
[SourceVersion "1"]
[SourceVersionDate "2007.07.04"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 e6 3. c4 f5 4. Nc3 Nf6 5. Bg5 c6 6. e3 Be7 7. Qc2 0-0 8. Bd3 Ne4 9. Bxe7 Qxe7 10. Nxe4 fxe4 11. Bxe4 dxe4 12. Qxe4 Nd7 13. 0-0 Nf6 14. Qd3 Rd8 15. Rad1 b6 16. Qb3 Bb7 17. c5 Ba6 18. Rfe1 Rab8 19. cxb6 Rxb6 20. Qc2 Nd5 21. a3 Re8 22. e4 Nf6 23. Ne5 Nd7 24. Nc4 Bxc4 25. Qxc4 Rxb2 26. d5 Qf8 27. Re2 exd5 28. exd5 Nb6 29. dxc6+ 0-1

[Event "Niedersachsen-chT U16"]
[Site "Stade"]
[Date "2007.05.20"]
[Round "7.2"]
[White "Rothmann, Gideon"]
[Black "Wierum, Colin"]
[Result "0-1"]
[ECO "A07"]
[WhiteElo "983"]
[BlackElo "1650"]
[PlyCount "46"]
[EventDate "2007.05.17"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2008"]
[Source "ChessBase"]
[SourceDate "2007.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.25"]
[SourceQuality "1"]

1. Nf3 d5 2. d3 Nf6 3. Nbd2 Bf5 4. g3 e6 5. Bg2 c6 6. 0-0 Be7 7. Re1 0-0 8. e4 Bg6 9. e5 Nfd7 10. d4 c5 11. c3 Nc6 12. a3 Qb6 13. Nf1 Bh5 14. Qc2 Bxf3 15. Bxf3 cxd4 16. Bg2 Ndxe5 17. cxd4 Nxd4 18. Qd1 Nc4 19. b4 Bf6 20. Ra2 a5 21. bxa5 Rxa5 22. Qd3 Rfa8 23. Ne3 Qb3 0-1

[Event "Niedersachsen-chT U16"]
[Site "Stade"]
[Date "2007.05.19"]
[Round "6.3"]
[White "Rauschenberg, Rolf"]
[Black "Wierum, Colin"]
[Result "0-1"]
[ECO "A80"]
[WhiteElo "861"]
[BlackElo "1650"]
[PlyCount "54"]
[EventDate "2007.05.17"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2008"]
[Source "ChessBase"]
[SourceDate "2007.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.25"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 e6 3. Nc3 f5 4. Bf4 c6 5. e3 Nf6 6. Bd3 Be7 7. Ne5 0-0 8. h3 Ne4 9. Nxe4 fxe4 10. Be2 Nd7 11. Qd2 Bf6 12. Nxd7 Bxd7 13. g4 Be8 14. 0-0-0 Bh4 15. f3 exf3 16. Bxf3 g5 17. Rhf1 gxf4 18. exf4 Rxf4 19. Kb1 Bg5 20. h4 Rxf3 21. hxg5 Rxf1 22. Rxf1 Bg6 23. Qe3 Qd6 24. Re1 Rf8 25. b3 Rf4 26. Rg1 Re4 27. Qc3 Qh2 0-1

[Event "Niedersachsen-chT U16"]
[Site "Stade"]
[Date "2007.05.19"]
[Round "5.2"]
[White "Richter, Stefan1111"]
[Black "Wierum, Colin"]
[Result "1/2-1/2"]
[ECO "B06"]
[WhiteElo "1587"]
[BlackElo "1650"]
[PlyCount "114"]
[EventDate "2007.05.17"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2008"]
[Source "ChessBase"]
[SourceDate "2007.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.25"]
[SourceQuality "1"]

1. e4 g6 2. Bc4 Bg7 3. d4 c5 4. c3 Nc6 5. dxc5 Nf6 6. f3 b6 7. Be3 bxc5 8. Bxc5 Qc7 9. Be3 Bb7 10. Ne2 0-0 11. 0-0 Ne5 12. Bb3 Rfd8 13. Nd4 d5 14. Nd2 dxe4 15. fxe4 Neg4 16. Bxf7+ Kh8 17. Bf4 e5 18. Ne6 Qxf7 19. Nxd8 Rxd8 20. Bg5 Qc7 21. Qe2 h6 22. Bh4 Qb6+ 23. Kh1 Qxb2 24. Rab1 Qxd2 25. Qxd2 Rxd2 26. Rxb7 Rxa2 27. h3 g5 28. Be1 Ne3 29. Rf2 Rxf2 30. Bxf2 Nd1 31. Be1 Nxe4 32. c4 a5 33. Bxa5 Ne3 34. Rc7 Bf8 35. Bb6 Nf5 36. Kg1 Nf6 37. Rf7 Be7 38. g4 Kg8 39. Rxf6 Bxf6 40. gxf5 Kf7 41. c5 Ke7 42. c6 h5 43. Kf2 Kd6 44. c7 Kd7 45. Kf3 Bg7 46. Ba5 Bf6 47. Ke4 g4 48. hxg4 hxg4 49. Ke3 Bg7 50. Kf2 e4 51. Kg3 Be5+ 52. Kxg4 Bxc7 53. Bxc7 Kxc7 54. Kf4 Kd7 55. Kxe4 Ke7 56. Ke5 Kf7 57. Kf4 Kf6 1/2-1/2

[Event "Niedersachsen-chT U16"]
[Site "Stade"]
[Date "2007.05.17"]
[Round "1.3"]
[White "Matthes, Henning"]
[Black "Wierum, Colin"]
[Result "0-1"]
[ECO "B01"]
[WhiteElo "1120"]
[BlackElo "1650"]
[PlyCount "76"]
[EventDate "2007.05.17"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2008"]
[Source "ChessBase"]
[SourceDate "2007.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.25"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. Bc4 Nf6 5. d3 Bg4 6. f3 Bh5 7. Bd2 Qc5 8. g4 Bg6 9. f4 h5 10. f5 Nxg4 11. Ne4 Qxf5 12. Qe2 Nc6 13. 0-0-0 0-0-0 14. Rf1 Qd7 15. Bxf7 Bxf7 16. Rxf7 Nf6 17. Nxf6 gxf6 18. Qe4 Qd5 19. Qxd5 Rxd5 20. Bc3 Nd8 21. Bxf6 Nxf7 22. Bxh8 Nxh8 23. Nf3 Bh6+ 24. Kd1 Rf5 25. Ke2 Ng6 26. Rg1 Nf4+ 27. Kd1 Nd5 28. Nd4 Rf2 29. Ne6 Rd2+ 30. Ke1 Rxc2 31. Rg6 Nf4 32. Rxh6 Re2+ 33. Kd1 Rxe6 34. Rh8+ Kd7 35. Ra8 a6 36. Rg8 Re2 37. Rg3 Rxh2 38. Rf3 Nd5 0-1

[Event "Niedersachsen-chT U16"]
[Site "Stade"]
[Date "2007.05.17"]
[Round "2.3"]
[White "Wierum, Colin"]
[Black "Zwick, Felix"]
[Result "1-0"]
[ECO "B15"]
[WhiteElo "1650"]
[BlackElo "1513"]
[PlyCount "39"]
[EventDate "2007.05.17"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2008"]
[Source "ChessBase"]
[SourceDate "2007.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.25"]
[SourceQuality "1"]

1. e4 c6 2. d4 g6 3. Nc3 d5 4. exd5 cxd5 5. Bd3 Bg7 6. Nge2 Nc6 7. Be3 e6 8. Qd2 Nge7 9. h4 Nb4 10. g4 Nxd3+ 11. Qxd3 Bd7 12. h5 Qb6 13. 0-0-0 0-0-0 14. h6 Bf8 15. Bg5 Kb8 16. Bf6 Rg8 17. Qf3 Be8 18. Ng1 Rc8 19. Qf4+ Qc7 20. Be5 1-0

[Event "Niedersachsen-ch op"]
[Site "Verden"]
[Date "2007.01.07"]
[Round "7"]
[White "Wierum, Colin"]
[Black "Tenninger, Marc"]
[Result "1-0"]
[ECO "B13"]
[WhiteElo "1652"]
[BlackElo "1735"]
[PlyCount "95"]
[EventDate "2007.01.04"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. Bd3 Nf6 5. Ne2 Nc6 6. c3 Bg4 7. f3 Bh5 8. Bf4 e6 9. Nd2 Bd6 10. Nf1 Bg6 11. g4 Bxd3 12. Qxd3 Bxf4 13. Nxf4 Qd6 14. Ne2 a6 15. h3 0-0-0 16. f4 Ne4 17. Nfg3 Nxg3 18. Qxg3 Rde8 19. 0-0-0 Na5 20. Qf2 Nc4 21. Ng3 Re7 22. f5 e5 23. dxe5 Rxe5 24. Rhe1 Rhe8 25. Re2 Rxe2 26. Nxe2 Qe5 27. Nf4 Qe3+ 28. Qxe3 Rxe3 29. Rxd5 Re1+ 30. Rd1 Re3 31. Rd3 Re4 32. Rd4 Re1+ 33. Kc2 b5 34. b3 Nb6 35. c4 bxc4 36. bxc4 Kc7 37. Kc3 Rc1+ 38. Kb4 Rc2 39. a3 Ra2 40. Nd5+ Nxd5+ 41. Rxd5 Rb2+ 42. Ka4 Rh2 43. Rd3 Rc2 44. Kb3 Rc1 45. Rc3 Rb1+ 46. Ka4 Ra1 47. Ka5 Kb7 48. c5 1-0

[Event "Niedersachsen-ch op"]
[Site "Verden"]
[Date "2007.01.05"]
[Round "4"]
[White "Buss, Heiko"]
[Black "Wierum, Colin"]
[Result "1-0"]
[ECO "B01"]
[WhiteElo "1748"]
[BlackElo "1652"]
[PlyCount "58"]
[EventDate "2007.01.04"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. d4 Nf6 5. Nf3 Bg4 6. Bd2 Nc6 7. Be2 0-0-0 8. Ne4 Qb6 9. Nxf6 gxf6 10. c3 e5 11. Qb3 Qxb3 12. axb3 Kb8 13. h3 Be6 14. dxe5 fxe5 15. c4 f6 16. 0-0-0 e4 17. Ng1 Nd4 18. Bc3 Nxe2+ 19. Nxe2 Bg7 20. Kc2 Bf5 21. g4 Bg6 22. Nf4 Kc8 23. Nxg6 hxg6 24. Rxd8+ Kxd8 25. g5 Ke7 26. Re1 Rxh3 27. Rxe4+ Kf7 28. Rd4 Ke7 29. gxf6+ Kxf6 1-0

[Event "Niedersachsen-ch op"]
[Site "Verden"]
[Date "2007.01.05"]
[Round "6"]
[White "Von Hoersten, Juergen"]
[Black "Wierum, Colin"]
[Result "1-0"]
[ECO "A80"]
[WhiteElo "1770"]
[BlackElo "1652"]
[PlyCount "59"]
[EventDate "2007.01.04"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 e6 3. Bf4 f5 4. e3 Nf6 5. h3 Be7 6. Nbd2 0-0 7. c4 c6 8. Bd3 Ne4 9. Ne5 Nd7 10. Nxd7 Bxd7 11. 0-0 Be8 12. Rc1 g5 13. Be5 h5 14. f3 Nd6 15. cxd5 exd5 16. f4 g4 17. Kh2 Bd7 18. g3 Kh7 19. hxg4 hxg4 20. Kg2 Kg6 21. Qxg4+ Kf7 22. Qh5+ Ke6 23. Nf3 Be8 24. Qh6+ Kd7 25. Ng5 Bf7 26. Rh1 Kc8 27. Ne6 Bxe6 28. Qxe6+ Kc7 29. Rh7 Re8 30. Bxf5 1-0

[Event "Niedersachsen-ch op"]
[Site "Verden"]
[Date "2007.01.05"]
[Round "5"]
[White "Wierum, Colin"]
[Black "Falk, Reinhard"]
[Result "1-0"]
[ECO "B43"]
[WhiteElo "1652"]
[BlackElo "1464"]
[PlyCount "89"]
[EventDate "2007.01.04"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 b6 6. Be3 Bb7 7. Qd2 Nf6 8. f3 Be7 9. 0-0-0 0-0 10. h4 Qc7 11. g4 Rd8 12. h5 Nc6 13. g5 Nxd4 14. Bxd4 Ne8 15. g6 h6 16. Be3 Bf8 17. Bf4 d6 18. Bh3 Qe7 19. Qg2 f6 20. Rd2 Nc7 21. Rhd1 e5 22. Bg3 Ne6 23. Bxe6+ Qxe6 24. Nd5 Bxd5 25. Rxd5 Rac8 26. Bf2 Rc6 27. Be3 Be7 28. Qd2 Bf8 29. Kb1 f5 30. f4 exf4 31. Bxf4 fxe4 32. Qd4 Be7 33. Qd2 e3 34. Bxe3 Bf6 35. Bf4 Qe4 36. Rxd6 Rcxd6 37. Bxd6 Rc8 38. Bf4 Qc6 39. Qd5+ Qxd5 40. Rxd5 Kf8 41. Rd6 Rc4 42. Bc1 Rb4 43. Re6 Rb5 44. b3 Rxh5 45. Ba3+ 1-0

[Event "Niedersachsen-ch op"]
[Site "Verden"]
[Date "2007.01.05"]
[Round "3"]
[White "Wierum, Colin"]
[Black "Paetzold, Julius"]
[Result "1-0"]
[ECO "B13"]
[WhiteElo "1652"]
[BlackElo "1184"]
[PlyCount "59"]
[EventDate "2007.01.04"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. Bd3 Nc6 5. Ne2 Bg4 6. f3 Bh5 7. Bf4 e6 8. Nd2 Bd6 9. c3 Bg6 10. Nf1 Bxd3 11. Qxd3 Bxf4 12. Nxf4 Nf6 13. g4 Qc7 14. Ne2 0-0-0 15. 0-0-0 h6 16. h3 e5 17. dxe5 Qxe5 18. f4 Qe4 19. Nfg3 Qxd3 20. Rxd3 Rd7 21. Rhd1 Rhd8 22. Nf5 Ne4 23. Re3 Rg8 24. c4 Nf6 25. g5 hxg5 26. fxg5 Re8 27. gxf6 Rxe3 28. Nxe3 gxf6 29. Nxd5 f5 30. Nd4 1-0

[Event "Niedersachsen-ch op"]
[Site "Verden"]
[Date "2007.01.04"]
[Round "2"]
[White "Pfemeter, Felix"]
[Black "Wierum, Colin"]
[Result "1-0"]
[ECO "A84"]
[WhiteElo "1293"]
[BlackElo "1652"]
[PlyCount "63"]
[EventDate "2007.01.04"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 f5 4. Bf4 Nf6 5. e3 Be7 6. Nf3 c6 7. Be2 0-0 8. 0-0 Ne4 9. Ne5 g5 10. Nxe4 gxf4 11. Nc3 fxe3 12. fxe3 Nd7 13. Nxd7 Bxd7 14. c5 Bg5 15. Rf3 Qf6 16. e4 dxe4 17. Nxe4 Be3+ 18. Rxe3 fxe4 19. Rxe4 Be8 20. b3 Bg6 21. Rxe6 Qf2+ 22. Kh1 Rad8 23. Bc4 Kh8 24. Qc1 Qxd4 25. Rxg6 Qd1+ 26. Qxd1 Rxd1+ 27. Rxd1 hxg6 28. h3 b6 29. cxb6 axb6 30. Rd6 b5 31. Bd3 c5 32. Rxg6 1-0

[Event "Niedersachsen-ch op"]
[Site "Verden"]
[Date "2007.01.04"]
[Round "1"]
[White "Wierum, Colin"]
[Black "Kaiser, Gerhard"]
[Result "1/2-1/2"]
[ECO "B29"]
[WhiteElo "1652"]
[BlackElo "2050"]
[PlyCount "105"]
[EventDate "2007.01.04"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nf6 3. Nc3 d5 4. Bb5+ Bd7 5. Bxd7+ Qxd7 6. exd5 Nxd5 7. Ne4 e6 8. d3 Nc6 9. Be3 Nxe3 10. fxe3 f5 11. Nc3 Be7 12. Qd2 0-0 13. 0-0-0 Bf6 14. h3 Nb4 15. Kb1 Rac8 16. Rdf1 Rc6 17. g4 Rb6 18. g5 Bxc3 19. Qxc3 Qd5 20. Qb3 Qxb3 21. axb3 Rd6 22. Nd2 e5 23. Nc4 Re6 24. Rf2 b5 25. Nd2 g6 26. h4 Nd5 27. e4 Nf4 28. exf5 gxf5 29. Re1 Ng6 30. h5 Ne7 31. Ref1 Rd8 32. Re2 Rd4 33. Nf3 Rf4 34. Nd2 Rg4 35. Rfe1 Nc6 36. Nf3 e4 37. dxe4 fxe4 38. Nd2 Rxg5 39. Rxe4 Rxe4 40. Nxe4 Rf5 41. h6 Kf8 42. Nd6 Re5 43. Rxe5 Nxe5 44. Nxb5 a5 45. Nd6 Ng4 46. Ne4 Nxh6 47. Nf6 Kg7 48. Nxh7 Kxh7 49. Ka2 Nf5 50. Ka3 Ne3 51. c3 Nd1 52. b4 axb4+ 53. cxb4 1/2-1/2

[Event "GER North-chT U16"]
[Site "Magdeburg"]
[Date "2006.08.28"]
[Round "5.2"]
[White "Wierum, Colin"]
[Black "Auge, Hendrik"]
[Result "1/2-1/2"]
[ECO "C54"]
[WhiteElo "1545"]
[BlackElo "1326"]
[PlyCount "88"]
[EventDate "2006.08.26"]
[EventType "team"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. cxd4 Bb4+ 7. Nc3 Nxe4 8. 0-0 Bxc3 9. bxc3 d5 10. Bb5 0-0 11. Qc2 Bf5 12. Bd3 Re8 13. Bf4 Rc8 14. Rab1 Na5 15. Rfe1 Bg6 16. Ne5 Nd6 17. Nxg6 Rxe1+ 18. Rxe1 hxg6 19. g3 Nac4 20. h4 Qd7 21. Bg5 Re8 22. Rxe8+ Qxe8 23. Qe2 Qa4 24. h5 Ne4 25. Bxe4 dxe4 26. hxg6 fxg6 27. Qxe4 Qd1+ 28. Kg2 Nd2 29. Bxd2 Qxd2 30. Qxb7 Qxc3 31. Qxa7 Qc6+ 32. Kh2 Qf3 33. Qb8+ Kh7 34. Qb2 Qh5+ 35. Kg2 Qd5+ 36. f3 Qa5 37. a3 Kh6 38. Qb4 Qd5 39. Qb2 Qa5 40. Qc1+ Kh7 41. Kf2 Qb6 42. Qc3 Qa7 43. Qb4 Kh6 44. Kg2 Qa6 1/2-1/2

[Event "GER North-chT U16"]
[Site "Magdeburg"]
[Date "2006.08.27"]
[Round "4.2"]
[White "Dobrusina, Anna"]
[Black "Wierum, Colin"]
[Result "1-0"]
[ECO "B01"]
[WhiteElo "1621"]
[BlackElo "1545"]
[PlyCount "97"]
[EventDate "2006.08.26"]
[EventType "team"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. d4 Nf6 5. Bc4 Nc6 6. Nf3 Bg4 7. h3 Bh5 8. g4 Bg6 9. Bd2 0-0-0 10. Nd5 Qa4 11. Bb3 Qa6 12. Nxf6 gxf6 13. d5 Ne5 14. Nxe5 fxe5 15. Qf3 Bg7 16. 0-0-0 Qb5 17. Qc3 Rhg8 18. Be3 Be4 19. Bc4 Qa4 20. Rhe1 Bf3 21. Bb3 Qb5 22. d6 exd6 23. Bxf7 Rgf8 24. Be6+ Kb8 25. Qa3 Qa6 26. Qxa6 bxa6 27. Rd3 Ka8 28. Ra3 Bb7 29. Rd1 d5 30. Bc5 Rf4 31. Bf5 Rc4 32. Ra5 d4 33. Bd3 Bh6+ 34. Kb1 Bf3 35. Re1 Bd2 36. Rxe5 Bxa5 37. Bxc4 Bd2 38. Bxa6 Bg2 39. h4 Bf3 40. Bxd4 Kb8 41. Rb5+ Ka8 42. Be5 Be2 43. Bb7+ Kb8 44. Rd5 Rxd5 45. Bxd5 Bxg4 46. Be4 h6 47. f4 Be6 48. Bg6 Bb4 49. Bg7 1-0

[Event "GER North-chT U16"]
[Site "Magdeburg"]
[Date "2006.08.27"]
[Round "3.2"]
[White "Leder, Phillip"]
[Black "Wierum, Colin"]
[Result "0-1"]
[ECO "B01"]
[WhiteElo "1241"]
[BlackElo "1421"]
[PlyCount "30"]
[EventDate "2006.08.26"]
[EventType "team"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. d3 Nf6 5. Bd2 Bf5 6. Qf3 Nc6 7. Nge2 0-0-0 8. a4 e6 9. Nb5 Bb4 10. c3 Ne5 11. Qe3 Nxd3+ 12. Kd1 Bc5 13. Ned4 Ng4 14. Qg3 Ngxf2+ 15. Ke2 a6 0-1

[Event "GER North-chT U16"]
[Site "Magdeburg"]
[Date "2006.08.26"]
[Round "1.2"]
[White "Stuehmeier, Chris"]
[Black "Wierum, Colin"]
[Result "1-0"]
[ECO "A84"]
[WhiteElo "1743"]
[BlackElo "1421"]
[PlyCount "52"]
[EventDate "2006.08.26"]
[EventType "team"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. Nf3 d5 2. d4 e6 3. Bf4 f5 4. e3 Nf6 5. c4 c6 6. Bd3 Be7 7. Nc3 0-0 8. c5 Nbd7 9. b4 h6 10. Be5 Ne4 11. Ne2 g5 12. Bg3 Nxg3 13. hxg3 Kg7 14. Nc3 g4 15. Ng1 Qc7 16. Nge2 e5 17. Qd2 Nf6 18. dxe5 Qxe5 19. Nd4 Ne4 20. Bxe4 dxe4 21. Nce2 Rd8 22. Qc3 Kh7 23. Qb3 Rf8 24. Nf4 Bd7 25. 0-0 Rad8 26. Nde6 Bxe6 1-0

[Event "GER North-chT U16"]
[Site "Magdeburg"]
[Date "2006.08.26"]
[Round "2.2"]
[White "Wierum, Colin"]
[Black "Sanning, Nico"]
[Result "0-1"]
[ECO "B35"]
[WhiteElo "1421"]
[BlackElo "1721"]
[PlyCount "18"]
[EventDate "2006.08.26"]
[EventType "team"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. Bc4 0-0 8. f3 Qb6 9. Nce2 Qb4+ 0-1

[Event "GER-ch op U25"]
[Site "Willingen"]
[Date "2006.06.09"]
[Round "9"]
[White "Wierum, Colin"]
[Black "Imcke, Patrick"]
[Result "0-1"]
[ECO "C27"]
[WhiteElo "1459"]
[BlackElo "1186"]
[PlyCount "64"]
[EventDate "2006.06.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. e4 e5 2. Bc4 Nf6 3. d3 Bc5 4. Nc3 0-0 5. Bg5 d6 6. Qd2 Be6 7. Nge2 h6 8. Bh4 Nc6 9. Bg3 Qd7 10. 0-0-0 a6 11. f4 Ng4 12. f5 Be3 13. Qxe3 Nxe3 14. fxe6 fxe6 15. Rde1 Nxc4 16. dxc4 Rab8 17. Rd1 Qe7 18. Rd2 Qg5 19. Rhd1 Rf7 20. Ng1 Nd4 21. Nh3 Qe7 22. Nf2 Rbf8 23. Nd3 Rf1 24. c5 Nb5 25. cxd6 cxd6 26. Nxb5 Rxd1+ 27. Rxd1 axb5 28. Nf2 Rd8 29. Nd3 d5 30. exd5 Rxd5 31. Nxe5 Qg5+ 32. Kb1 Rxd1# 0-1

[Event "GER-ch op U25"]
[Site "Willingen"]
[Date "2006.06.08"]
[Round "8"]
[White "Voelz, Michael"]
[Black "Wierum, Colin"]
[Result "1-0"]
[ECO "B01"]
[WhiteElo "1629"]
[BlackElo "1459"]
[PlyCount "51"]
[EventDate "2006.06.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. d4 Nf6 5. Bc4 Nc6 6. Nge2 Bf5 7. Bd2 0-0-0 8. Nb5 Qb6 9. a4 Na5 10. Bxa5 Qxa5+ 11. c3 e5 12. 0-0 Kb8 13. b4 Qb6 14. Qb3 Bd6 15. Bxf7 Bg6 16. Bc4 a6 17. Nxd6 Qxd6 18. a5 exd4 19. Nxd4 Ne4 20. Rad1 Qf6 21. b5 Ka8 22. bxa6 Nc5 23. axb7+ Nxb7 24. Bd5 Qa6 25. Ne6 Rc8 26. Nc5 1-0

[Event "GER-ch op U25"]
[Site "Willingen"]
[Date "2006.06.08"]
[Round "7"]
[White "Wierum, Colin"]
[Black "Heinrich, Philipp"]
[Result "1-0"]
[ECO "C24"]
[WhiteElo "1459"]
[BlackElo "1180"]
[PlyCount "63"]
[EventDate "2006.06.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. e4 e5 2. Bc4 Nf6 3. d3 Be7 4. Nc3 c6 5. Bg5 0-0 6. Qd2 Nxe4 7. Nxe4 d5 8. Bxe7 Qxe7 9. Bxd5 cxd5 10. Nc3 Be6 11. Nge2 Nc6 12. 0-0 d4 13. Ne4 b5 14. f4 f5 15. N4g3 a5 16. fxe5 Nxe5 17. Nxd4 Qc5 18. Qf2 Ng4 19. Nxe6 Qxf2+ 20. Rxf2 Nxf2 21. Nxf8 Rxf8 22. Kxf2 g5 23. Re1 f4 24. Ne4 h6 25. h3 Kg7 26. Kf3 Kg6 27. Nf2 Rf6 28. Re5 Rf5 29. Rxf5 Kxf5 30. d4 h5 31. c3 Ke6 32. Ke4 1-0

