[Event "DEN-ch G5-2"]
[Site "Svendborg"]
[Date "2019.04.22"]
[Round "5"]
[White "Nielsen, Mathias"]
[Black "Oseney, Mazen"]
[Result "1-0"]
[ECO "B27"]
[WhiteElo "1888"]
[BlackElo "1833"]
[PlyCount "71"]
[EventDate "2019.04.18"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "DEN"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. e4 g6 2. Nf3 Bg7 3. Bc4 c5 4. 0-0 Nc6 5. c3 Nf6 6. Re1 d6 7. d4 cxd4 8. Nxd4 0-0 9. Bg5 Qb6 10. Qb3 Qc7 11. Nxc6 bxc6 12. Nd2 a5 13. Qc2 a4 14. Nf3 Ng4 15. h3 Ne5 16. Nxe5 Bxe5 17. f4 Bg7 18. f5 d5 19. Bd3 dxe4 20. Bxe4 gxf5 21. Bxf5 Bxf5 22. Qxf5 e6 23. Qg4 Kh8 24. Kh1 Rg8 25. Qf4 Qb7 26. Re2 Ra5 27. Bf6 a3 28. bxa3 Rf5 29. Bxg7+ Rxg7 30. Qe4 Qc7 31. Rb1 Rg6 32. Rd1 Rgf6 33. Qd4 Kg7 34. Re4 Rf1+ 35. Rxf1 e5 36. Qd3 1-0

[Event "DEN-ch G5-2"]
[Site "Svendborg"]
[Date "2019.04.21"]
[Round "4"]
[White "Nielsen, Mathias"]
[Black "Pedersen, Kim1111"]
[Result "1-0"]
[ECO "B07"]
[WhiteElo "1888"]
[BlackElo "1661"]
[PlyCount "63"]
[EventDate "2019.04.18"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "DEN"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. e4 d6 2. Nf3 Nd7 3. Bc4 Ngf6 4. d3 h6 5. Nc3 c6 6. a4 e5 7. h3 Be7 8. Be3 Qc7 9. 0-0 Nf8 10. Ne2 Be6 11. Bxe6 Nxe6 12. Ng3 g6 13. c3 d5 14. Qb3 h5 15. Rfe1 h4 16. exd5 cxd5 17. Nf1 Bd6 18. Ng5 a6 19. Nxe6 fxe6 20. Qb6 Qxb6 21. Bxb6 e4 22. Nd2 Nd7 23. a5 Nxb6 24. axb6 Bf4 25. Rad1 0-0-0 26. dxe4 d4 27. c4 Rd6 28. c5 Rc6 29. b4 a5 30. Nb3 axb4 31. Nxd4 Rxc5 32. Nxe6 1-0

[Event "DEN-ch G5-2"]
[Site "Svendborg"]
[Date "2019.04.20"]
[Round "3"]
[White "Svendsen, Peter Willer"]
[Black "Nielsen, Mathias"]
[Result "1-0"]
[ECO "C64"]
[WhiteElo "1936"]
[BlackElo "1888"]
[PlyCount "25"]
[EventDate "2019.04.18"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "DEN"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. 0-0 d6 5. h3 Nf6 6. d4 a6 7. Bxc6+ bxc6 8. dxc5 Nxe4 9. cxd6 cxd6 10. Re1 f5 11. Nbd2 Ng5 12. Nxg5 Qxg5 13. Ne4 1-0

[Event "DEN-ch G5-2"]
[Site "Svendborg"]
[Date "2019.04.19"]
[Round "2"]
[White "Hansen, Erik Hedegaard"]
[Black "Nielsen, Mathias"]
[Result "0-1"]
[ECO "D12"]
[WhiteElo "1698"]
[BlackElo "1888"]
[PlyCount "108"]
[EventDate "2019.04.18"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "DEN"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. d4 d5 2. c4 Nf6 3. Nf3 Bf5 4. e3 e6 5. Bd3 Bg6 6. 0-0 c6 7. Nc3 Nbd7 8. b3 Rc8 9. Bb2 Bd6 10. Qc2 Bb8 11. Rac1 Qc7 12. e4 Bh5 13. e5 Bxf3 14. gxf3 Nxe5 15. dxe5 Qxe5 16. Rfe1 Qxh2+ 17. Kf1 Nh5 18. Ke2 Nf4+ 19. Kd1 Nxd3 20. Qxd3 Qxf2 21. Re2 dxc4 22. bxc4 Qh4 23. Re4 Bf4 24. Qe2 Qh1+ 25. Kc2 Bxc1 26. Rxe6+ Kf8 27. Bxc1 fxe6 28. Qxe6 Qh2+ 29. Ne2 Qc7 30. Bf4 Re8 31. Bd6+ Re7 32. Qf5+ Ke8 33. Bxc7 Rxc7 34. Qe6+ Re7 35. Qc8+ Kf7 36. Qxh8 Rxe2+ 37. Kd3 Rxa2 38. Qxh7 a5 39. Qh5+ Kf6 40. Qc5 a4 41. f4 a3 42. Qe5+ Kf7 43. Qc7+ Kg8 44. Qxb7 Ra1 45. Qa8+ Kh7 46. Qa4 a2 47. Kc2 Rf1 48. Qxa2 Rf2+ 49. Kb3 Rxa2 50. Kxa2 Kg6 51. Kb3 Kf5 52. Kb4 Kxf4 53. Kc5 g5 54. Kxc6 g4 0-1

[Event "DEN-ch G5-2"]
[Site "Svendborg"]
[Date "2019.04.18"]
[Round "1"]
[White "Nielsen, Mathias"]
[Black "Hansen, Erik"]
[Result "1-0"]
[ECO "B22"]
[WhiteElo "1888"]
[BlackElo "1708"]
[PlyCount "83"]
[EventDate "2019.04.18"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "DEN"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. Bc4 e6 4. c3 d6 5. 0-0 Nf6 6. Re1 Be7 7. d4 cxd4 8. cxd4 0-0 9. Nc3 a6 10. d5 Na5 11. Bf1 b5 12. b4 Nc4 13. Bxc4 bxc4 14. Qd4 exd5 15. exd5 Bg4 16. Nd2 Bh5 17. Nxc4 Nd7 18. Bf4 Bf6 19. Qe3 Qc8 20. Bxd6 Re8 21. Qd3 Qb7 22. Rac1 Bg6 23. Ne4 Kh8 24. Re2 h6 25. Rce1 Ne5 26. Nxe5 Bxe5 27. Qb3 Qd7 28. Bxe5 Rxe5 29. Nc5 Rxe2 30. Rxe2 Qg4 31. Re1 Kh7 32. d6 Qd4 33. Rd1 Re8 34. h3 Qf4 35. d7 Rd8 36. Nb7 Rxd7 37. Rxd7 Qe4 38. Qc3 Qb1+ 39. Kh2 Qxa2 40. Qd4 Qc2 41. Nd6 Qc6 42. Ne8 1-0

[Event "Odense-ch Basis 4"]
[Site "Odense"]
[Date "2016.10.14"]
[Round "3"]
[White "Stage Steffensen, Sander"]
[Black "Nielsen, Mathias"]
[Result "1-0"]
[ECO "C50"]
[WhiteElo "1715"]
[BlackElo "1726"]
[PlyCount "59"]
[EventDate "2016.10.14"]
[EventType "tourn"]
[EventRounds "5"]
[EventCountry "DEN"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. d3 d6 5. h3 h6 6. a3 Nf6 7. Nc3 a6 8. Be3 Ba7 9. Bxa7 Nxa7 10. 0-0 g5 11. Nh2 h5 12. d4 Nc6 13. dxe5 Nxe5 14. Bb3 Bd7 15. f4 gxf4 16. Rxf4 Rg8 17. Kh1 Qe7 18. Qf1 Rg6 19. Qf2 Be6 20. Bxe6 fxe6 21. Rf1 Nfd7 22. Nf3 0-0-0 23. Nxe5 Nxe5 24. Qa7 Nd7 25. Rf7 Qg5 26. Qf2 Rdg8 27. Rg1 Qh6 28. Qa7 Nb6 29. Na4 Kd8 30. Qb8+ 1-0

[Event "DEN-ch GS7-2"]
[Site "Svendborg"]
[Date "2016.03.19"]
[Round "1"]
[White "Nielsen, Mathias"]
[Black "Hansen, Erik Olsgaard"]
[Result "1/2-1/2"]
[ECO "B01"]
[WhiteElo "1839"]
[BlackElo "1897"]
[PlyCount "39"]
[EventDate "2016.03.19"]
[EventType "swiss"]
[EventCountry "DEN"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qd6 4. Nf3 c6 5. Bc4 Bf5 6. d3 Nf6 7. h3 Nbd7 8. g4 Bg6 9. Qe2 e6 10. Be3 Qc7 11. 0-0-0 Nb6 12. Bb3 Nfd5 13. Bxb6 Nxb6 14. Ne5 0-0-0 15. h4 Bd6 16. Nf3 h5 17. Bxe6+ Kb8 18. Bf5 hxg4 19. Bxg4 Bb4 20. Qe5 1/2-1/2

[Event "Nordic School-ch U17"]
[Site "Espoo"]
[Date "2012.02.19"]
[Round "5"]
[White "Jacobsen, Runi"]
[Black "Nielsen, Mathias"]
[Result "1-0"]
[ECO "C54"]
[WhiteElo "1478"]
[BlackElo "1572"]
[PlyCount "35"]
[EventDate "2012.02.17"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "FIN"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. e5 Ng8 7. cxd4 Bb4+ 8. Nc3 Nge7 9. Ng5 0-0 10. Qh5 h6 11. Nxf7 Rxf7 12. Qxf7+ Kh8 13. Be3 a6 14. 0-0 Bxc3 15. bxc3 b5 16. Bb3 Bb7 17. Bc2 d6 18. Bxh6 1-0

[Event "Nordic School-ch U17"]
[Site "Espoo"]
[Date "2012.02.19"]
[Round "6"]
[White "Nielsen, Mathias"]
[Black "Christensen, Casper"]
[Result "1/2-1/2"]
[ECO "B06"]
[WhiteElo "1572"]
[BlackElo "1955"]
[PlyCount "45"]
[EventDate "2012.02.17"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "FIN"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 d6 2. d4 g6 3. Nf3 Bg7 4. c3 Nc6 5. Bb5 a6 6. Bxc6+ bxc6 7. 0-0 f5 8. e5 e6 9. Bg5 Qd7 10. Nbd2 Nh6 11. Bxh6 Bxh6 12. Nc4 Rb8 13. b4 Bb7 14. Re1 0-0 15. Qb3 Rfe8 16. Na5 Ba8 17. Nc4 g5 18. h3 Kh8 19. a4 Re7 20. a5 c5 21. exd6 cxd6 22. Nb6 Qe8 23. Nxa8 1/2-1/2

[Event "Nordic School-ch U17"]
[Site "Espoo"]
[Date "2012.02.18"]
[Round "4"]
[White "Nielsen, Mathias"]
[Black "Karlsson, Mikael"]
[Result "0-1"]
[ECO "B22"]
[WhiteElo "1572"]
[BlackElo "1867"]
[PlyCount "38"]
[EventDate "2012.02.17"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "FIN"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. c3 Nf6 4. e5 Nd5 5. d4 cxd4 6. Qxd4 Nc6 7. Qg4 Qc7 8. Qe4 d6 9. exd6 Bxd6 10. g3 b6 11. Nbd2 Bb7 12. Nc4 Rd8 13. Bg5 Be7 14. h4 Nxc3 15. bxc3 Nd4 16. Qxd4 Rxd4 17. Nxd4 Bxh1 18. Nb5 Qc6 19. Nxa7 Qe4+ 0-1

[Event "Nordic School-ch U17"]
[Site "Espoo"]
[Date "2012.02.18"]
[Round "3"]
[White "Nielsen, Mathias"]
[Black "Sigurdsson, Birkir Karl"]
[Result "1-0"]
[ECO "B50"]
[WhiteElo "1572"]
[BlackElo "1694"]
[PlyCount "83"]
[EventDate "2012.02.17"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "FIN"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. Bc4 Nc6 4. 0-0 g6 5. c3 Nf6 6. Re1 Bg4 7. h3 Bxf3 8. Qxf3 Bg7 9. Bb5 Qb6 10. Na3 0-0 11. Bxc6 Qxc6 12. d3 b5 13. Nc2 a5 14. d4 c4 15. Bg5 Rab8 16. a3 Rfe8 17. Bxf6 Bxf6 18. Ne3 Bg7 19. Nd5 e6 20. Ne3 b4 21. axb4 axb4 22. Ra7 Rf8 23. Rea1 bxc3 24. bxc3 Rb3 25. R1a6 Rb6 26. Ra4 d5 27. exd5 exd5 28. Nxd5 Rb1+ 29. Kh2 Qd6+ 30. g3 Qe6 31. Re7 Qc6 32. Raa7 Kh8 33. Rxf7 Rg8 34. Rxg7 Rxg7 35. Qf8+ Rg8 36. Qxg8+ Kxg8 37. Ne7+ Kh8 38. Nxc6 Rb3 39. d5 Rxc3 40. d6 Rd3 41. d7 c3 42. d8Q+ 1-0

[Event "Nordic School-ch U17"]
[Site "Espoo"]
[Date "2012.02.17"]
[Round "2"]
[White "Kjoita, Henning Jakhelln"]
[Black "Nielsen, Mathias"]
[Result "1-0"]
[ECO "C47"]
[WhiteElo "1942"]
[BlackElo "1572"]
[PlyCount "57"]
[EventDate "2012.02.17"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "FIN"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Nf6 5. Nc3 Bb4 6. Nxc6 bxc6 7. Bd3 0-0 8. 0-0 h6 9. e5 Nd5 10. Nxd5 cxd5 11. Qg4 Qe7 12. Bxh6 Qxe5 13. Bf4 f5 14. Qf3 Qe6 15. c3 Bd6 16. Rfe1 Qf7 17. Bxd6 cxd6 18. Qf4 Qf6 19. Qb4 g5 20. Bc2 a5 21. Qb5 Ba6 22. Qxd5+ Kg7 23. Re3 f4 24. Rh3 Rh8 25. Rxh8 Rxh8 26. Re1 g4 27. Qe4 g3 28. fxg3 fxg3 29. Qg4+ 1-0

[Event "Nordic School-ch U17"]
[Site "Espoo"]
[Date "2012.02.17"]
[Round "1"]
[White "Nielsen, Mathias"]
[Black "Johansen, Stian"]
[Result "0-1"]
[ECO "B31"]
[WhiteElo "1572"]
[BlackElo "1990"]
[PlyCount "58"]
[EventDate "2012.02.17"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "FIN"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 g6 2. Nf3 Bg7 3. c3 d5 4. exd5 Qxd5 5. d4 c5 6. Bb5+ Nc6 7. 0-0 Bg4 8. c4 Qh5 9. d5 0-0-0 10. Bxc6 bxc6 11. Qa4 Rd7 12. Qxc6+ Rc7 13. Qe8+ Kb7 14. Qb5+ Ka8 15. Bf4 Rc8 16. Ng5 Nf6 17. f3 Bd7 18. Qa5 h6 19. Nxf7 Rhf8 20. Ne5 Ne4 21. Nxd7 Rxf4 22. Nb6+ Kb7 23. Nxc8 Bd4+ 24. Rf2 Kxc8 25. Qa6+ Kd8 26. Qa5+ Ke8 27. Nd2 Nxf2 28. Nf1 Ne4+ 29. Kh1 Qxh2+ 0-1

