[Event "Reykjavik op"]
[Site "Reykjavik"]
[Date "2023.04.04"]
[Round "9"]
[White "Krumm, Arthur"]
[Black "Buchert, Matthaus"]
[Result "1/2-1/2"]
[ECO "D00"]
[WhiteElo "1843"]
[BlackElo "1641"]
[PlyCount "83"]
[EventDate "2023.03.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ISL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 d5 2. Nc3 Nf6 3. Bf4 g6 4. Nf3 Bg7 5. h3 0-0 6. e3 c5 7. Nb5 Na6 8. c3 Bf5 9. Be2 Nd7 10. 0-0 Nf6 11. a4 Ne4 12. Bd3 Re8 13. Re1 f6 14. Nd2 Nxf2 15. Kxf2 Bxd3 16. Bg3 e5 17. Nb3 c4 18. Nc1 Be4 19. Rg1 f5 20. Ne2 Re6 21. Bh2 Qg5 22. Ng3 Bd3 23. Qf3 e4 24. Qf4 Qxf4+ 25. exf4 Rc6 26. Nf1 Bxf1 27. Rgxf1 Nc7 28. Nxc7 Rxc7 29. Ke2 Bf6 30. Rg1 Rg7 31. Rab1 Rc8 32. g4 a5 33. Bg3 h5 34. g5 Bd8 35. Be1 Rc6 36. Bd2 Rb6 37. b3 cxb3 38. Rb2 Rc6 39. Rxb3 Rc4 40. Rgb1 b6 41. Ra1 Rd7 42. Rb5 1/2-1/2

[Event "Reykjavik op"]
[Site "Reykjavik"]
[Date "2023.04.03"]
[Round "8"]
[White "Buchert, Matthaus"]
[Black "Ragnarsson, Johann Hjortur"]
[Result "0-1"]
[ECO "B13"]
[WhiteElo "1641"]
[BlackElo "1929"]
[PlyCount "84"]
[EventDate "2023.03.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ISL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. Bd3 Nc6 5. c3 Qc7 6. Ne2 Bg4 7. f3 Bh5 8. Bf4 Qd7 9. 0-0 e6 10. Qe1 Bg6 11. Bxg6 hxg6 12. Nd2 Bd6 13. Bxd6 Qxd6 14. f4 Nge7 15. Nc1 b5 16. Nd3 b4 17. Nf3 bxc3 18. bxc3 Nf5 19. g4 Nh6 20. Qh4 0-0 21. Nfe5 Rfc8 22. Nc5 Nxe5 23. fxe5 Qd8 24. Qg3 Qg5 25. h3 Rab8 26. Rab1 Qd2 27. a4 Rb2 28. Rxb2 Qxb2 29. Rf2 Qa3 30. Qd3 Rb8 31. Rc2 Qa1+ 32. Kg2 Rb1 33. Rf2 Rg1+ 34. Kf3 Rh1 35. Kg3 g5 36. Qf3 Kh8 37. a5 Qg1+ 38. Qg2 Qe1 39. Na4 Rg1 40. a6 Qa1 41. Qxg1 Qxg1+ 42. Kf3 Qd1+ 0-1

[Event "Reykjavik op"]
[Site "Reykjavik"]
[Date "2023.04.02"]
[Round "7"]
[White "Kukavica, Tony"]
[Black "Buchert, Matthaus"]
[Result "1-0"]
[ECO "A04"]
[WhiteElo "1981"]
[BlackElo "1641"]
[PlyCount "83"]
[EventDate "2023.03.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ISL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. Nf3 c5 2. b3 Nc6 3. Bb2 d6 4. d4 cxd4 5. Nxd4 Nf6 6. e3 a6 7. Be2 e6 8. 0-0 Be7 9. c4 0-0 10. Nc3 Nxd4 11. Qxd4 b6 12. Bf3 Rb8 13. Rfd1 Qc7 14. Rac1 Bb7 15. Bxb7 Qxb7 16. a4 Rfd8 17. e4 Ne8 18. Rc2 Bf6 19. Qe3 Bxc3 20. Bxc3 b5 21. cxb5 axb5 22. Rcd2 bxa4 23. bxa4 Qb3 24. a5 Ra8 25. Bd4 Qb5 26. Bb6 Rdc8 27. Qd3 Qa4 28. f3 Kf8 29. e5 d5 30. Qxh7 Rxa5 31. Bxa5 Qxa5 32. Qh8+ Ke7 33. Qh4+ Kf8 34. Qh8+ Ke7 35. Qh4+ Kf8 36. f4 Rc4 37. Qh8+ Ke7 38. Qh4+ Kf8 39. Qf2 Re4 40. f5 Qa4 41. fxe6 Rxe5 42. Qxf7# 1-0

[Event "Reykjavik op"]
[Site "Reykjavik"]
[Date "2023.04.01"]
[Round "5"]
[White "Buchert, Matthaus"]
[Black "Birkisson, Bjorn Holm"]
[Result "1/2-1/2"]
[ECO "B23"]
[WhiteElo "1641"]
[BlackElo "2110"]
[PlyCount "99"]
[EventDate "2023.03.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ISL"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. Bb5 Nd4 4. Nf3 g6 5. Nxd4 cxd4 6. Ne2 a6 7. Ba4 Bg7 8. 0-0 b5 9. Bb3 Bb7 10. d3 d5 11. f3 e6 12. Qe1 Ne7 13. Qh4 h6 14. Qg3 0-0 15. Qh4 Kh7 16. Bg5 f6 17. Bd2 Nc6 18. exd5 exd5 19. Nxd4 Nxd4 20. Qxd4 f5 21. Qe3 Re8 22. Qf4 Qb6+ 23. Kh1 Re2 24. Bc3 d4 25. Bd2 Rae8 26. Rae1 Qd8 27. Rxe2 Rxe2 28. Re1 Rxe1+ 29. Bxe1 Qe7 30. Bd2 Bc8 31. a3 Be6 32. Bb4 Qe8 33. Qd2 Bxb3 34. cxb3 Qe6 35. Qc2 g5 36. Kg1 g4 37. fxg4 fxg4 38. Kf2 g3+ 39. hxg3 Qe3+ 40. Kf1 Qxg3 41. Qe2 Qf4+ 42. Kg1 Qc1+ 43. Kf2 Qf4+ 44. Qf3 Qc1 45. Qe4+ Kh8 46. Qe2 Kh7 47. Bd6 Kg8 48. Qe8+ Kh7 49. Qe4+ Kg8 50. Qe8+ 1/2-1/2

[Event "Reykjavik op"]
[Site "Reykjavik"]
[Date "2023.04.01"]
[Round "6"]
[White "Buchert, Matthaus"]
[Black "Melzner, Lukas"]
[Result "0-1"]
[ECO "C00"]
[WhiteElo "1641"]
[BlackElo "2199"]
[PlyCount "62"]
[EventDate "2023.03.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ISL"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]

1. e4 e6 2. Nc3 d5 3. Nf3 d4 4. Ne2 c5 5. c3 Nc6 6. Ng3 Bd6 7. Bb5 e5 8. Bxc6+ bxc6 9. 0-0 Ne7 10. c4 h5 11. Nh4 g5 12. Nhf5 h4 13. Ng7+ Kf8 14. N3f5 Ng8 15. d3 Rh7 16. Nxd6 Qxd6 17. Nf5 Bxf5 18. exf5 Rg7 19. g4 hxg3 20. fxg3 Nf6 21. Re1 Re8 22. Qf3 e4 23. dxe4 Nd7 24. Qh5 Ne5 25. b3 f6 26. h4 Nd3 27. Kh2 Nxe1 28. hxg5 fxg5 29. Bxg5 Rxg5 30. Qh8+ Rg8 31. Qh6+ Qxh6+ 0-1

[Event "Reykjavik op"]
[Site "Reykjavik"]
[Date "2023.03.31"]
[Round "4"]
[White "Zhou, Lepu Coco"]
[Black "Buchert, Matthaus"]
[Result "0-1"]
[ECO "B31"]
[WhiteElo "2034"]
[BlackElo "1641"]
[PlyCount "90"]
[EventDate "2023.03.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ISL"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. c3 Bg7 5. d4 Qa5 6. a4 cxd4 7. 0-0 Nf6 8. e5 Nd5 9. cxd4 0-0 10. Bd2 Qc7 11. Qb3 e6 12. Nc3 Nxc3 13. Bxc3 d5 14. Bxc6 bxc6 15. Bb4 Rd8 16. Qc3 a5 17. Bd6 Rxd6 18. exd6 Qxd6 19. Rac1 Ra6 20. Ne5 Bb7 21. Nd3 Qc7 22. Rfd1 Rb6 23. Ne5 Rb4 24. Nxc6 Rc4 25. Qxa5 Qxc6 26. Ra1 Bxd4 27. Rxd4 Rxd4 28. h3 Qa6 29. Qc7 Rc4 30. Qd8+ Kg7 31. b3 Rb4 32. Qc7 Qc6 33. Qg3 d4 34. Rd1 Rxb3 35. f3 d3 36. Qf4 Qb6+ 37. Kh2 Ba6 38. Qe5+ Kg8 39. Qe4 Qb8+ 40. f4 Rb4 41. Qc6 Qxf4+ 42. Kh1 Rxa4 43. Rb1 d2 44. Qd7 Rd4 45. Rb8+ Qxb8 0-1

[Event "Reykjavik op"]
[Site "Reykjavik"]
[Date "2023.03.30"]
[Round "2"]
[White "Buchert, Matthaus"]
[Black "Rice, Christopher"]
[Result "1/2-1/2"]
[ECO "B13"]
[WhiteElo "1641"]
[BlackElo "1952"]
[PlyCount "79"]
[EventDate "2023.03.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ISL"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. Bd3 Nc6 5. c3 Nf6 6. Bf4 Bg4 7. Qb3 Qd7 8. Nd2 e6 9. Ngf3 Bxf3 10. Nxf3 Bd6 11. Bxd6 Qxd6 12. 0-0 0-0 13. Rae1 Qc7 14. Qd1 Rab8 15. Ne5 Nxe5 16. Rxe5 b5 17. Re3 b4 18. Rh3 g6 19. Qf3 Kg7 20. Qe3 h5 21. Rc1 bxc3 22. Rxc3 Qd6 23. Rc2 Rfc8 24. Re2 Rb4 25. f3 Qb6 26. Rh4 Rxb2 27. g4 Rxe2 28. Bxe2 Qb1+ 29. Kf2 Qc1 30. Qe5 g5 31. Rxh5 Kg6 32. Bd3+ Ne4+ 33. fxe4 Rc2+ 34. Bxc2 Qxc2+ 35. Ke3 Qc3+ 36. Kf2 Qd2+ 37. Kf3 Qd3+ 38. Kf2 Qd2+ 39. Kf3 Qd3+ 40. Kf2 1/2-1/2

[Event "Reykjavik op"]
[Site "Reykjavik"]
[Date "2023.03.30"]
[Round "3"]
[White "Kolka, Dawid"]
[Black "Buchert, Matthaus"]
[Result "1/2-1/2"]
[ECO "B22"]
[WhiteElo "1940"]
[BlackElo "1641"]
[PlyCount "47"]
[EventDate "2023.03.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ISL"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]

1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. Nf3 Nc6 5. Bc4 Nb6 6. Bb3 d5 7. exd6 Qxd6 8. 0-0 e6 9. a4 Be7 10. a5 Nd5 11. Na3 Nxa5 12. Ba4+ Bd7 13. Bxd7+ Qxd7 14. Ne5 Qc7 15. Nac4 Nc6 16. Nxc6 bxc6 17. Ra6 0-0 18. Qa4 Rfc8 19. d3 Qb7 20. Qa2 Nb6 21. Ne5 Rd8 22. Re1 Bf6 23. Ng4 Be7 24. Ne5 1/2-1/2

[Event "Uppsala Young Champions 9th"]
[Site "Uppsala"]
[Date "2022.11.02"]
[Round "8"]
[White "Buchert, Matthaus"]
[Black "Lilliehook, Victor"]
[Result "0-1"]
[ECO "B52"]
[WhiteElo "1415"]
[BlackElo "1683"]
[PlyCount "100"]
[EventDate "2022.10.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SWE"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. c4 Nf6 5. Nc3 e5 6. d3 a6 7. Bxd7+ Qxd7 8. 0-0 Nc6 9. Bg5 Be7 10. Bxf6 Bxf6 11. Nd5 Qd8 12. h3 0-0 13. Nh2 g6 14. Ng4 Bg7 15. Nge3 b5 16. Qd2 bxc4 17. Nxc4 f5 18. Rab1 f4 19. b4 cxb4 20. Nxb4 Nd4 21. Nc2 Ne6 22. Qa5 Qxa5 23. Nxa5 Nc5 24. Rb6 Rfc8 25. Nb4 Bf8 26. Rd1 Rcb8 27. Rxb8 Rxb8 28. a3 Rb5 29. Nbc6 Rb2 30. Kf1 Ra2 31. Nc4 Rc2 32. N6a5 Be7 33. f3 Bd8 34. d4 Bxa5 35. Nxa5 exd4 36. Rxd4 Rc3 37. Nc4 Nb3 38. Rxd6 Rxc4 39. Rxa6 Rc1+ 40. Ke2 Rc2+ 41. Kf1 Nd2+ 42. Ke1 Nc4 43. Kf1 Ne3+ 44. Ke1 Nxg2+ 45. Kf1 Ne3+ 46. Ke1 Nc4 47. a4 Ra2 48. Kf1 Nd2+ 49. Kg1 Nxf3+ 50. Kh1 Rh2# 0-1

[Event "Uppsala Young Champions 9th"]
[Site "Uppsala"]
[Date "2022.11.01"]
[Round "7"]
[White "Grahn, Vidar"]
[Black "Buchert, Matthaus"]
[Result "1-0"]
[ECO "B22"]
[WhiteElo "2067"]
[BlackElo "1415"]
[PlyCount "49"]
[EventDate "2022.10.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SWE"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. d4 cxd4 5. Nf3 Nc6 6. cxd4 d6 7. Bc4 Nb6 8. Bb3 dxe5 9. d5 Na5 10. Nc3 Nxb3 11. Qxb3 f6 12. Be3 Bd7 13. 0-0 g6 14. Rac1 Bg7 15. a4 Nc8 16. Ne4 0-0 17. d6+ Kh8 18. dxe7 Qxe7 19. Bc5 Qf7 20. Qxb7 Nb6 21. Bxf8 Rxf8 22. Rc7 Be6 23. Rxf7 Rb8 24. Qxb8+ Bf8 25. Qxf8# 1-0

[Event "Uppsala Young Champions 9th"]
[Site "Uppsala"]
[Date "2022.10.31"]
[Round "5"]
[White "Buchert, Matthaus"]
[Black "Hagevi, Vidar"]
[Result "0-1"]
[ECO "B23"]
[WhiteElo "1415"]
[BlackElo "1922"]
[PlyCount "100"]
[EventDate "2022.10.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SWE"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 e6 3. f4 d5 4. Nf3 a6 5. d3 Nc6 6. g3 Nf6 7. e5 Nd7 8. Bg2 b5 9. 0-0 b4 10. Ne2 a5 11. g4 h5 12. gxh5 Rxh5 13. Ng3 Rh8 14. Qe2 c4 15. d4 c3 16. Qf2 cxb2 17. Bxb2 Nb6 18. Nd2 Na4 19. Bc1 Nxd4 20. Nb3 Nxb3 21. axb3 Bc5 22. Be3 Bxe3 23. Qxe3 Qb6 24. Qxb6 Nxb6 25. Ne2 Ba6 26. Rf2 Bxe2 27. Rxe2 Ke7 28. Bf1 Rhc8 29. Rg2 g6 30. Bd3 Rc3 31. Kf2 a4 32. bxa4 b3 33. cxb3 Rxd3 34. a5 Rxb3 35. Rg3 Rb2+ 36. Kg1 Nc4 37. a6 Rb6 38. Kg2 Rbxa6 39. Rb1 Rb6 40. Rd1 Ra2+ 41. Kh3 Ra3 42. Rxa3 Nxa3 43. Kg4 Rb2 44. h3 Kf8 45. Rc1 Nc4 46. Ra1 Kg7 47. h4 Ne3+ 48. Kf3 Nf5 49. Kg4 Rb3 50. Kg5 Rg3# 0-1

[Event "Uppsala Young Champions 9th"]
[Site "Uppsala"]
[Date "2022.10.31"]
[Round "6"]
[White "Fernow, Tore"]
[Black "Buchert, Matthaus"]
[Result "0-1"]
[ECO "A57"]
[WhiteElo "1363"]
[BlackElo "1415"]
[PlyCount "62"]
[EventDate "2022.10.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SWE"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 b5 4. Qc2 g6 5. b3 Bg7 6. Bb2 0-0 7. e4 bxc4 8. bxc4 d6 9. Nf3 Qa5+ 10. Nbd2 Bg4 11. Bc3 Qa6 12. Bd3 Nbd7 13. 0-0 Nb6 14. Bb2 Na4 15. Bxf6 Bxf6 16. e5 dxe5 17. Ne4 Bg7 18. Rae1 Bxf3 19. gxf3 Rab8 20. Rb1 Qa5 21. Rb3 Rxb3 22. axb3 Nb6 23. Kh1 Nd7 24. Rg1 Nf6 25. h4 Qb6 26. Ng3 Kh8 27. Ne2 Nh5 28. Ng3 Qf6 29. Be2 Nf4 30. Nf1 Qxh4+ 31. Nh2 Qxf2 0-1

[Event "Uppsala Young Champions 9th"]
[Site "Uppsala"]
[Date "2022.10.30"]
[Round "4"]
[White "Wingh, Walter"]
[Black "Buchert, Matthaus"]
[Result "0-1"]
[ECO "B14"]
[WhiteElo "1417"]
[BlackElo "1415"]
[PlyCount "72"]
[EventDate "2022.10.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SWE"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 c5 2. c3 g6 3. d4 cxd4 4. cxd4 d5 5. exd5 Bg7 6. Nf3 Nf6 7. Nc3 0-0 8. Bc4 Nbd7 9. 0-0 Nb6 10. Bb3 Nfxd5 11. Nxd5 Nxd5 12. Qd3 Bf5 13. Qb5 Nb6 14. Qe2 Qd6 15. Rd1 Rfd8 16. Bg5 Re8 17. Rd2 Rad8 18. Rad1 Nd5 19. Ne1 h6 20. Bh4 Be6 21. Bg3 Qd7 22. Nc2 Bf6 23. Bxd5 Bxd5 24. a3 Bg5 25. f4 Bf6 26. Nb4 Bb3 27. Nc2 Bxc2 28. Rxc2 Bxd4+ 29. Kh1 Qa4 30. Rc4 Qa6 31. Qc2 Bf6 32. Rc1 Qb5 33. b4 Rd7 34. h3 Red8 35. Be1 Rd3 36. Bc3 Qxc4 0-1

[Event "Uppsala Young Champions 9th"]
[Site "Uppsala"]
[Date "2022.10.29"]
[Round "3"]
[White "Buchert, Matthaus"]
[Black "Frank, Anton"]
[Result "0-1"]
[ECO "B23"]
[WhiteElo "1415"]
[BlackElo "1734"]
[PlyCount "120"]
[EventDate "2022.10.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SWE"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 g6 3. d4 cxd4 4. Qxd4 Nf6 5. Be3 Nc6 6. Qd2 Bg7 7. f3 0-0 8. 0-0-0 d6 9. g4 h5 10. Bg5 hxg4 11. Bxf6 Bxf6 12. h4 Qa5 13. Nd5 Qxd2+ 14. Rxd2 Kg7 15. h5 Rh8 16. h6+ Rxh6 17. Rxh6 Kxh6 18. Nxf6 exf6 19. Rxd6 Kg7 20. f4 Be6 21. Bb5 Rc8 22. Bxc6 Rxc6 23. Rxc6 bxc6 24. Ne2 f5 25. exf5 Bxf5 26. Ng3 Be6 27. Kd2 f5 28. Ke3 Kf6 29. a3 a5 30. Ne2 Bd5 31. Ng3 Bf3 32. Nf1 Kg7 33. b4 axb4 34. axb4 Bd5 35. Ng3 Kf6 36. Kd4 Be6 37. Ne2 Bd7 38. Ng3 g5 39. Ke3 Be6 40. Nh5+ Kg6 41. Ng3 Bc4 42. Nh1 Be6 43. Ng3 Kh6 44. c3 Kg6 45. Nf1 Kh5 46. Ng3+ Kh4 47. Ne2 Bd5 48. Ng1 Bc4 49. fxg5 Kxg5 50. Kf2 Kf4 51. Kg2 Bd5+ 52. Kf2 g3+ 53. Kf1 Kg4 54. b5 cxb5 55. c4 Bxc4+ 56. Kg2 f4 57. Nf3 Bd5 58. Kh1 Kxf3 59. Kg1 g2 60. Kh2 Kf2 0-1

[Event "Uppsala Young Champions 9th"]
[Site "Uppsala"]
[Date "2022.10.29"]
[Round "2"]
[White "Harish, Neeraj"]
[Black "Buchert, Matthaus"]
[Result "1/2-1/2"]
[ECO "B36"]
[WhiteElo "1915"]
[BlackElo "1415"]
[PlyCount "61"]
[EventDate "2022.10.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SWE"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. Nf3 c5 2. c4 g6 3. e4 Nc6 4. d4 cxd4 5. Nxd4 Nf6 6. Nc3 d6 7. Be2 Nxd4 8. Qxd4 Bg7 9. Be3 0-0 10. Qd2 a5 11. 0-0 a4 12. f3 Qa5 13. Rac1 Be6 14. Nd5 Qxd2 15. Nxe7+ Kh8 16. Bxd2 Rfe8 17. Nd5 Nxd5 18. cxd5 Bxd5 19. Bb5 Re5 20. Bc3 Bxa2 21. Bxe5 Bxe5 22. Rc2 Ra5 23. Bd7 Bd4+ 24. Kh1 Bb3 25. Rd2 Bc5 26. g3 b5 27. Bc6 Bb4 28. Rd4 Bc5 29. Rd2 Bb4 30. Rd4 Bc5 31. Rd2 1/2-1/2

[Event "Uppsala Young Champions 9th"]
[Site "Uppsala"]
[Date "2022.10.28"]
[Round "1"]
[White "Buchert, Matthaus"]
[Black "Falkevall, Axel"]
[Result "0-1"]
[ECO "B23"]
[WhiteElo "1415"]
[BlackElo "2243"]
[PlyCount "106"]
[EventDate "2022.10.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SWE"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. f4 g6 4. Nf3 Bg7 5. Bb5 Nd4 6. 0-0 a6 7. Bc4 b5 8. Bd5 Rb8 9. d3 e6 10. Bb3 Ne7 11. Nxd4 cxd4 12. Ne2 0-0 13. Qe1 d5 14. e5 Nc6 15. Qf2 Qb6 16. g4 Bd7 17. Ng3 Qc5 18. Bd2 a5 19. c3 a4 20. Bd1 Qb6 21. cxd4 f6 22. Be3 fxe5 23. dxe5 d4 24. Bd2 Nxe5 25. Qe2 Nc6 26. Ne4 e5 27. Qg2 exf4 28. Bxf4 Ne5 29. Qg3 Rbe8 30. Rc1 Bc6 31. Be2 Bxe4 32. dxe4 Rxf4 33. Rxf4 d3+ 34. Qf2 Qxf2+ 35. Rxf2 dxe2 36. Rxe2 Nd3 37. Rcc2 Bd4+ 38. Kh1 Rf8 39. h3 Rf1+ 40. Kh2 Be5+ 41. Kg2 Ra1 42. Rc8+ Kg7 43. Rd2 Nf4+ 44. Kh2 Rxa2 45. Rcc2 Nd3+ 46. Kg1 Ra1+ 47. Kg2 Ne1+ 48. Kg1 Nxc2+ 49. Kg2 Nd4 50. Kf2 Rh1 51. Kg2 Rh2+ 52. Kg1 Nf3+ 53. Kf1 Rxd2 0-1

[Event "Uppsala Young Champions 8th"]
[Site "Uppsala"]
[Date "2021.11.03"]
[Round "8"]
[White "Muntean, Victor"]
[Black "Buchert, Matthaus"]
[Result "1-0"]
[ECO "B22"]
[WhiteElo "1864"]
[BlackElo "1408"]
[PlyCount "137"]
[EventDate "2021.10.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SWE"]
[SourceTitle "CBM 205 Extra"]
[Source "ChessBase"]
[SourceDate "2022.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.01.31"]
[SourceQuality "1"]

1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 Nf6 5. Nf3 Nc6 6. dxc5 Qxd1+ 7. Kxd1 Bg4 8. b4 a5 9. b5 Bxf3+ 10. gxf3 Ne5 11. Bf4 Ng6 12. Be3 e5 13. c4 Nd7 14. c6 bxc6 15. Nc3 Bb4 16. bxc6 Bxc3 17. cxd7+ Kxd7 18. Rc1 Bb4 19. c5 Kc6 20. a4 Rhd8+ 21. Kc2 f5 22. Bb5+ Kc7 23. Rhd1 f4 24. Bd2 Bxd2 25. Rxd2 Rxd2+ 26. Kxd2 Rd8+ 27. Kc3 Rd5 28. Kb3 Nf8 29. c6 Ne6 30. Re1 Kb6 31. Rc1 Kc7 32. Bc4 Nd4+ 33. Kc3 Rc5 34. Rb1 Rxc6 35. Kd3 Rb6 36. Rg1 Rg6 37. Rc1 Rc6 38. Rb1 Rd6 39. Ke4 Nc6 40. Rc1 g6 41. Bd5 Kd7 42. Rc5 Nb4 43. Rxa5 Nc6 44. Bxc6+ Rxc6 45. Kxe5 Re6+ 46. Kxf4 Rf6+ 47. Ke4 h6 48. f4 Ke7 49. f5 gxf5+ 50. Rxf5 Ra6 51. a5 Ke6 52. Re5+ Kf6 53. f4 Kf7 54. f5 Kg7 55. Rb5 Kf7 56. Rc5 Kf6 57. Kd4 Ke7 58. Kc4 Kd7 59. Kb5 Rd6 60. a6 Rd1 61. Kb6 Rd6+ 62. Kb7 Rd1 63. Rb5 Rc1 64. a7 Rc7+ 65. Ka6 Rc6+ 66. Rb6 Rc3 67. a8Q Kc7 68. Qa7+ Kc8 69. Rb8# 1-0

[Event "Uppsala Young Champions 8th"]
[Site "Uppsala"]
[Date "2021.11.03"]
[Round "9"]
[White "Nesse, David"]
[Black "Buchert, Matthaus"]
[Result "1-0"]
[ECO "B31"]
[WhiteElo "1747"]
[BlackElo "1408"]
[PlyCount "61"]
[EventDate "2021.10.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SWE"]
[SourceTitle "CBM 205 Extra"]
[Source "ChessBase"]
[SourceDate "2022.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.01.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. 0-0 Bg7 5. Re1 e5 6. Bxc6 dxc6 7. d3 Qc7 8. Be3 b6 9. Qd2 h6 10. h3 Be6 11. a3 0-0-0 12. b4 f5 13. Qe2 f4 14. Bd2 g5 15. bxc5 Bf6 16. cxb6 axb6 17. Nh2 h5 18. f3 Qg7 19. d4 Kc7 20. a4 Nh6 21. a5 b5 22. d5 Bd7 23. a6 Kb8 24. Qf2 Bc8 25. Qb6+ Ka8 26. Qxc6+ Ka7 27. Na3 Rd7 28. Nxb5+ Kb8 29. a7+ Rxa7 30. Rxa7 Qc7 31. Ra8# 1-0

[Event "Uppsala Young Champions 8th"]
[Site "Uppsala"]
[Date "2021.11.02"]
[Round "7"]
[White "Buchert, Matthaus"]
[Black "Ostensson, Julia"]
[Result "1/2-1/2"]
[ECO "B30"]
[WhiteElo "1408"]
[BlackElo "1687"]
[PlyCount "108"]
[EventDate "2021.10.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SWE"]
[SourceTitle "CBM 205 Extra"]
[Source "ChessBase"]
[SourceDate "2022.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.01.31"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. Bb5 Nd4 4. Nf3 e6 5. 0-0 a6 6. Bd3 Nc6 7. b3 g6 8. Bb2 Bg7 9. Re1 d6 10. Qe2 Nge7 11. Nd1 e5 12. a4 0-0 13. Bc4 h6 14. d3 g5 15. h3 Ng6 16. Ne3 Nf4 17. Qf1 Qf6 18. g4 h5 19. Nh2 Ne7 20. f3 Kh7 21. Bc1 Rh8 22. Nd5 Nexd5 23. Bxd5 Kg8 24. Bxf4 Qxf4 25. Qg2 Bf6 26. Nf1 Bd8 27. Qg3 Qf6 28. Ne3 Ba5 29. Re2 Bc3 30. Rd1 Bd4 31. Kg2 Bxe3 32. Rxe3 Rb8 33. Ra1 b6 34. Re2 Be6 35. c4 Bxd5 36. cxd5 h4 37. Qf2 Qf4 38. Rb2 Kg7 39. Rab1 b5 40. a5 Rhc8 41. Kg1 Rb7 42. Kg2 Rbc7 43. Rc2 c4 44. dxc4 bxc4 45. Rbc1 c3 46. Kg1 Qd2 47. Kg2 Qxf2+ 48. Kxf2 Rc5 49. b4 Rc4 50. Ke3 Kf8 51. Kd3 Rd4+ 52. Ke3 Rdc4 53. Kd3 Rd4+ 54. Ke3 Rdc4 1/2-1/2

[Event "Uppsala Young Champions 8th"]
[Site "Uppsala"]
[Date "2021.11.01"]
[Round "6"]
[White "Buchert, Matthaus"]
[Black "Brozka, Karel"]
[Result "0-1"]
[ECO "B13"]
[WhiteElo "1408"]
[BlackElo "2140"]
[PlyCount "52"]
[EventDate "2021.10.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SWE"]
[SourceTitle "CBM 205 Extra"]
[Source "ChessBase"]
[SourceDate "2022.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.01.31"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. Bd3 Nc6 5. c3 Nf6 6. Bf4 Bg4 7. Qb3 Qc8 8. Nd2 e6 9. Ngf3 Be7 10. 0-0 0-0 11. Qc2 Bh5 12. Rae1 Bg6 13. Bxg6 hxg6 14. Ne5 Nxd4 15. Qd3 Nc6 16. Qh3 Nh5 17. Bg3 Nxg3 18. fxg3 Nxe5 19. Rxe5 Bf6 20. Re2 Qc6 21. Nf3 Qc4 22. Ref2 Rac8 23. g4 Qxa2 24. g5 Be7 25. Ne5 Bc5 26. Ra1 Qxa1# 0-1

[Event "Uppsala Young Champions 8th"]
[Site "Uppsala"]
[Date "2021.11.01"]
[Round "5"]
[White "Johansson, William"]
[Black "Buchert, Matthaus"]
[Result "1-0"]
[ECO "A06"]
[WhiteElo "1998"]
[BlackElo "1408"]
[PlyCount "115"]
[EventDate "2021.10.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SWE"]
[SourceTitle "CBM 205 Extra"]
[Source "ChessBase"]
[SourceDate "2022.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.01.31"]
[SourceQuality "1"]

1. b3 d5 2. Bb2 Bg4 3. Nf3 Bxf3 4. gxf3 e6 5. e3 Nf6 6. Rg1 g6 7. d4 Bg7 8. Ba3 Nbd7 9. Nc3 c5 10. Qd2 Rc8 11. Nb5 Qb6 12. b4 c4 13. Nc3 Qd6 14. Ne2 a5 15. c3 b5 16. 0-0-0 Ra8 17. Bg2 Nb8 18. Qb2 Bf8 19. e4 Nfd7 20. Rde1 Nc6 21. exd5 exd5 22. Nf4+ Kd8 23. Nxd5 Qxd5 24. f4 Qd6 25. Re5 Ndxe5 26. dxe5 Qc7 27. Qd2+ Kc8 28. Rd1 Ra6 29. Qd5 Be7 30. Bh3+ Kb7 31. Qxb5+ Rb6 32. Qxc4 Rd8 33. Re1 Na7 34. Bg2+ Kb8 35. Qb3 Rd3 36. Bb2 axb4 37. Qc2 Qc4 38. Re4 Rxc3 39. Rxc4 Rxc2+ 40. Kxc2 Nb5 41. Bd5 Nc7 42. Bxf7 Bh4 43. Bd4 Rb7 44. e6 Nd5 45. Be5+ Ka7 46. Rc5 Ne7 47. Rc7 Rxc7+ 48. Bxc7 Bxf2 49. Bd6 Bh4 50. Kb3 Kb6 51. Kxb4 Be1+ 52. Kc4 Bh4 53. a4 Ka5 54. Be8 Bf6 55. Kc5 Nc8 56. Bb5 Bh4 57. Bc7+ Nb6 58. Bxb6# 1-0

[Event "Uppsala Young Champions 8th"]
[Site "Uppsala"]
[Date "2021.10.31"]
[Round "4"]
[White "Frank, Anton"]
[Black "Buchert, Matthaus"]
[Result "0-1"]
[ECO "A58"]
[WhiteElo "1525"]
[BlackElo "1408"]
[PlyCount "110"]
[EventDate "2021.10.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SWE"]
[SourceTitle "CBM 205 Extra"]
[Source "ChessBase"]
[SourceDate "2022.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.01.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 a6 5. bxa6 g6 6. Nc3 Bg7 7. g3 d6 8. Bg2 0-0 9. Nf3 Nbd7 10. Rb1 Nb6 11. 0-0 Bf5 12. Ra1 Ne4 13. Nxe4 Bxe4 14. Nh4 Bxg2 15. Nxg2 Rxa6 16. a3 Qa8 17. e4 f5 18. Nf4 Ra4 19. Ne6 Rf7 20. Qb3 Qa5 21. Bd2 Qxd2 22. Qxb6 Rxe4 23. Rfd1 Qh6 24. Qb8+ Bf8 25. b4 f4 26. Re1 f3 27. h4 Rxh4 28. gxh4 Qxh4 29. Re4 Qh3 30. Rg4 Qxg4+ 31. Kf1 Qg2+ 32. Ke1 Qg1+ 33. Kd2 Qxa1 34. bxc5 Qa2+ 35. Kc3 Qxa3+ 36. Kc4 Qa4+ 37. Kd3 Qa6+ 38. Kd4 dxc5+ 39. Nxc5 Qd6 40. Qb1 Bg7+ 41. Kc4 Rf4+ 42. Ne4 Qc7+ 43. Kd3 Rf5 44. Qb3 Qd7 45. Qb8+ Bf8 46. Nc3 e6 47. Qb3 exd5 48. Ne4 Qe6 49. Ng3 Rg5 50. Qb8 Qe5 51. Qb6 Rxg3 52. fxg3 Qe2+ 53. Kc3 Bb4+ 54. Kb3 Qc4+ 55. Kb2 Bc3+ 0-1

[Event "Uppsala Young Champions 8th"]
[Site "Uppsala"]
[Date "2021.10.30"]
[Round "3"]
[White "Buchert, Matthaus"]
[Black "Skahlberg Bjerknes, Lima De Faria"]
[Result "0-1"]
[ECO "B27"]
[WhiteElo "1408"]
[BlackElo "1826"]
[PlyCount "120"]
[EventDate "2021.10.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SWE"]
[SourceTitle "CBM 205 Extra"]
[Source "ChessBase"]
[SourceDate "2022.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.01.31"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 g6 3. d4 cxd4 4. Qxd4 Nf6 5. Nf3 Nc6 6. Qa4 d6 7. e5 dxe5 8. Nxe5 Bd7 9. Nxd7 Qxd7 10. Be3 Bg7 11. Rd1 Qc8 12. Be2 0-0 13. 0-0 a6 14. Qh4 b5 15. a3 Ne5 16. Bh6 Nc4 17. Bxg7 Kxg7 18. Bxc4 Qxc4 19. Qxc4 bxc4 20. Rd4 Rab8 21. Rxc4 Rxb2 22. Rc1 Rd8 23. Rb4 Rxb4 24. axb4 Rd4 25. Ra1 Rxb4 26. g3 Rc4 27. Ne2 Rxc2 28. Nd4 Rc4 29. Nb3 Rc6 30. Na5 Rc3 31. Nb7 Rc7 32. Nd8 Rc8 33. Nb7 Ra8 34. Ra5 Rb8 35. Nc5 Rb5 36. Rxb5 axb5 37. Kf1 Nd5 38. Ke2 Kf6 39. Kd3 Ke5 40. f3 f5 41. f4+ Kd6 42. Kd4 Nb4 43. Nb3 Nc6+ 44. Kd3 Kd5 45. Nd2 e5 46. Kc3 b4+ 47. Kb3 exf4 48. gxf4 Kd4 49. Nf3+ Ke4 50. Ng5+ Kxf4 51. Nxh7 Kg4 52. Nf8 g5 53. Ne6 f4 54. h3+ Kf5 55. Nc5 f3 56. Nd3 Ke4 57. Nf2+ Ke3 58. Ng4+ Ke2 59. Kc2 f2 60. Nxf2 Kxf2 0-1

[Event "Uppsala Young Champions 8th"]
[Site "Uppsala"]
[Date "2021.10.30"]
[Round "2"]
[White "Westrum, Kim Roger Hansen"]
[Black "Buchert, Matthaus"]
[Result "1-0"]
[ECO "B31"]
[WhiteElo "1945"]
[BlackElo "1408"]
[PlyCount "59"]
[EventDate "2021.10.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SWE"]
[SourceTitle "CBM 205 Extra"]
[Source "ChessBase"]
[SourceDate "2022.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.01.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. 0-0 Bg7 5. c3 Nf6 6. Re1 0-0 7. d4 cxd4 8. cxd4 d5 9. e5 Ne4 10. Be3 Qb6 11. Bxc6 bxc6 12. Qc1 e6 13. Nfd2 Nxd2 14. Qxd2 a5 15. Nc3 a4 16. h4 Rd8 17. Bg5 Rd7 18. Bf6 c5 19. dxc5 Qxc5 20. Rac1 Qa5 21. Qf4 Bxf6 22. exf6 Qd8 23. Nxa4 Rb7 24. Rc2 d4 25. Nc5 Rb5 26. Rd1 Qf8 27. Rxd4 Raa5 28. b4 Ra7 29. Rcd2 Qd8 30. Rxd8# 1-0

[Event "Uppsala Young Champions 8th"]
[Site "Uppsala"]
[Date "2021.10.29"]
[Round "1"]
[White "Buchert, Matthaus"]
[Black "Heimisson, Hilmir Freyr"]
[Result "0-1"]
[ECO "B30"]
[WhiteElo "1408"]
[BlackElo "2253"]
[PlyCount "64"]
[EventDate "2021.10.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SWE"]
[SourceTitle "CBM 205 Extra"]
[Source "ChessBase"]
[SourceDate "2022.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.01.31"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. Bb5 Nd4 4. Nf3 e6 5. Nxd4 cxd4 6. Ne2 Qg5 7. Bc4 Qxg2 8. Ng3 Qh3 9. d3 h5 10. Bf4 Ne7 11. Qd2 Ng6 12. e5 Qg4 13. Ne2 Nxf4 14. Qxf4 Qxf4 15. Nxf4 g5 16. Ne2 Bg7 17. Rg1 Bxe5 18. Rxg5 Bf6 19. Rg3 Ke7 20. f3 Bh4 21. Nxd4 b6 22. Kf2 f5 23. Re1 Kf6 24. Reg1 f4 25. Ne2 fxg3+ 26. hxg3 Bg5 27. f4 Bh6 28. Rh1 Bb7 29. Rxh5 Bg7 30. Rg5 Rh2+ 31. Ke3 Bh6 32. Re5 Rg8 0-1

[Event "Uppsala Young Champions 7th"]
[Site "Uppsala"]
[Date "2020.10.28"]
[Round "9"]
[White "Buchert, Matthaus"]
[Black "Muntean, Victor"]
[Result "1-0"]
[ECO "C58"]
[WhiteElo "1427"]
[BlackElo "1968"]
[PlyCount "69"]
[EventDate "2020.10.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SWE"]
[SourceTitle "CBM 199 Extra"]
[Source "ChessBase"]
[SourceDate "2021.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2021.01.31"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 d5 5. exd5 Na5 6. Bb5+ c6 7. dxc6 bxc6 8. Bd3 Nd5 9. Nf3 Bd6 10. 0-0 0-0 11. Re1 Nf4 12. Bf1 f5 13. Nxe5 Bxe5 14. Rxe5 Ng6 15. Re1 f4 16. d4 Qg5 17. Nd2 Bg4 18. Nf3 Qd5 19. Qd3 Kh8 20. Ne5 Bf5 21. Qc3 Rae8 22. Nxg6+ Bxg6 23. Rxe8 Bxe8 24. Bd2 Nb7 25. Qb4 Nd6 26. Re1 Bg6 27. Re5 Qf7 28. Qxd6 f3 29. Re7 Qxa2 30. Rxa7 Qg8 31. Qxc6 fxg2 32. Bc4 Be4 33. Bxg8 Bxc6 34. d5 Bb5 35. Be6 1-0

[Event "Uppsala Young Champions 7th"]
[Site "Uppsala"]
[Date "2020.10.28"]
[Round "8"]
[White "Buchert, Matthaus"]
[Black "Ostlund, Joar"]
[Result "0-1"]
[ECO "C52"]
[WhiteElo "1427"]
[BlackElo "2106"]
[PlyCount "52"]
[EventDate "2020.10.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SWE"]
[SourceTitle "CBM 199 Extra"]
[Source "ChessBase"]
[SourceDate "2021.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2021.01.31"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. b4 Bxb4 5. c3 Ba5 6. d4 d6 7. d5 Nce7 8. Qa4+ c6 9. dxc6 Nxc6 10. Qb3 Qe7 11. Ng5 Nh6 12. 0-0 Bb6 13. Bd5 0-0 14. h3 Kh8 15. Kh2 f6 16. Nf3 Nf7 17. Nh4 g6 18. f4 exf4 19. Rxf4 g5 20. Nf5 Qe5 21. g3 gxf4 22. Bxf4 Qe8 23. Nh6 Nxh6 24. Bxh6 Qh5 25. Bg7+ Kxg7 26. Bg8 Qxh3# 0-1

[Event "Uppsala Young Champions 7th"]
[Site "Uppsala"]
[Date "2020.10.27"]
[Round "7"]
[White "Skahlberg Bjerknes, Lima De Faria"]
[Black "Buchert, Matthaus"]
[Result "1-0"]
[ECO "A25"]
[WhiteElo "1759"]
[BlackElo "1427"]
[PlyCount "59"]
[EventDate "2020.10.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SWE"]
[SourceTitle "CBM 199 Extra"]
[Source "ChessBase"]
[SourceDate "2021.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2021.01.31"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nc6 3. g3 f5 4. Bg2 Nf6 5. d3 Bb4 6. Bd2 0-0 7. Nf3 d6 8. a3 Bxc3 9. Bxc3 Qe8 10. 0-0 Qh5 11. b4 f4 12. b5 Ne7 13. c5 Kh8 14. cxd6 Ng6 15. Bb4 cxd6 16. Qc2 Nd5 17. Bxd6 Rd8 18. Bc7 Rd7 19. Ba5 b6 20. Bd2 Rc7 21. Qb2 Bb7 22. Rfc1 Re7 23. Rc4 Nf6 24. Rac1 e4 25. dxe4 Nxe4 26. Bb4 Qxb5 27. a4 Qd7 28. Bxe7 Qxe7 29. Rc7 Qa3 30. Qxg7# 1-0

[Event "Uppsala Young Champions 7th"]
[Site "Uppsala"]
[Date "2020.10.26"]
[Round "5"]
[White "Buchert, Matthaus"]
[Black "Ruzic, Pia Marie"]
[Result "1-0"]
[ECO "C10"]
[WhiteElo "1427"]
[BlackElo "1929"]
[PlyCount "109"]
[EventDate "2020.10.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SWE"]
[SourceTitle "CBM 199 Extra"]
[Source "ChessBase"]
[SourceDate "2021.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2021.01.31"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 dxe4 4. Nxe4 Nd7 5. Bd3 Ngf6 6. Qe2 Nxe4 7. Bxe4 c5 8. Nf3 cxd4 9. Bg5 Bb4+ 10. Bd2 Bxd2+ 11. Qxd2 Nc5 12. Bd3 0-0 13. 0-0-0 Nxd3+ 14. Qxd3 Qa5 15. Kb1 b6 16. Qxd4 Bb7 17. Ne5 Rac8 18. Qf4 f6 19. Nc4 Qc5 20. Ne3 Rc7 21. Rd2 Rfc8 22. Rhd1 Qe7 23. f3 b5 24. g4 a5 25. h4 a4 26. g5 fxg5 27. hxg5 Rf8 28. Qh2 Bxf3 29. Rf1 Rcc8 30. Rdf2 Bc6 31. g6 h6 32. Rf7 Qc5 33. Qf4 Rfd8 34. Ng4 Qf5 35. Rxf5 exf5 36. Ne3 Be4 37. Qe5 Rc6 38. Qxb5 f4 39. Rxf4 Bxc2+ 40. Ka1 Rxg6 41. Qf1 Bd3 42. Qc1 Rgd6 43. a3 Be2 44. Qc3 Rd3 45. Qc4+ Kh8 46. Qc5 Re8 47. Rf8+ Rxf8 48. Qxf8+ Kh7 49. Qf5+ Kh8 50. Qf8+ Kh7 51. Qf5+ Kh8 52. Qe4 Rb3 53. Nf5 Bb5 54. Qg4 g5 55. Qd4+ 1-0

[Event "Uppsala Young Champions 7th"]
[Site "Uppsala"]
[Date "2020.10.26"]
[Round "6"]
[White "Grahn, Vidar"]
[Black "Buchert, Matthaus"]
[Result "1-0"]
[ECO "B33"]
[WhiteElo "1864"]
[BlackElo "1427"]
[PlyCount "73"]
[EventDate "2020.10.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SWE"]
[SourceTitle "CBM 199 Extra"]
[Source "ChessBase"]
[SourceDate "2021.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2021.01.31"]
[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. c3 0-0 12. Nc2 Rb8 13. h4 g6 14. g3 Bg7 15. h5 Ne7 16. Nce3 Nxd5 17. Nxd5 Bb7 18. hxg6 fxg6 19. Bh3 Qg5 20. Be6+ Kh8 21. Qd3 Rbe8 22. Bd7 Rd8 23. Bh3 Bh6 24. Ke2 Bxd5 25. exd5 Rf6 26. Be6 Rdf8 27. Rh2 Rf3 28. Qc2 Re3+ 29. Kd1 Rff3 30. fxe3 Rf1+ 31. Ke2 Rxa1 32. Qe4 Rxa2 33. Kd3 a5 34. Qf3 b4 35. Rxh6 Qd8 36. Qf7 Qg8 37. Qxg8# 1-0

[Event "Uppsala Young Champions 7th"]
[Site "Uppsala"]
[Date "2020.10.25"]
[Round "4"]
[White "Buchert, Matthaus"]
[Black "Ostensson, Julia"]
[Result "0-1"]
[ECO "B23"]
[WhiteElo "1427"]
[BlackElo "1562"]
[PlyCount "126"]
[EventDate "2020.10.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SWE"]
[SourceTitle "CBM 199 Extra"]
[Source "ChessBase"]
[SourceDate "2021.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2021.01.31"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. f4 g6 4. Nf3 Bg7 5. Bb5 Nd4 6. 0-0 Nxb5 7. Nxb5 a6 8. Nc3 d6 9. d3 Nf6 10. Qe1 0-0 11. Qh4 b5 12. f5 b4 13. Ne2 Qd7 14. Bh6 Bb7 15. Ng5 e5 16. Bxg7 Kxg7 17. fxg6 hxg6 18. Rxf6 Kxf6 19. Rf1+ Ke7 20. Nh7+ f6 21. Nxf8 Rxf8 22. b3 Qe6 23. Qh7+ Qf7 24. Qxf7+ Rxf7 25. g4 d5 26. Ng3 a5 27. h4 dxe4 28. Nxe4 Bxe4 29. dxe4 Rh7 30. g5 Rxh4 31. gxf6+ Kf7 32. Re1 Kxf6 33. Kg2 Kg5 34. Kg3 Rg4+ 35. Kf3 Rf4+ 36. Kg3 Kf6 37. Kg2 g5 38. Kg3 Ke6 39. Kg2 Rg4+ 40. Kf3 Rf4+ 41. Kg2 Kf6 42. Kg3 Kg6 43. Kg2 g4 44. Re2 Kg5 45. Re3 Kh4 46. Re1 Kg5 47. Re3 Kh4 48. Re1 g3 49. Re2 Kg4 50. Rd2 Rxe4 51. Rd5 Re2+ 52. Kf1 Kf3 53. Rd3+ Re3 54. Rd2 e4 55. Rg2 Re1+ 56. Kxe1 Kxg2 57. c4 Kh2 58. a4 g2 59. Kd1 g1Q+ 60. Kc2 Qf2+ 61. Kb1 e3 62. Ka1 e2 63. Kb1 e1Q# 0-1

[Event "Uppsala Young Champions 7th"]
[Site "Uppsala"]
[Date "2020.10.24"]
[Round "2"]
[White "Johnson, Daniel"]
[Black "Buchert, Matthaus"]
[Result "1-0"]
[ECO "B31"]
[WhiteElo "2100"]
[BlackElo "1427"]
[PlyCount "39"]
[EventDate "2020.10.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SWE"]
[SourceTitle "CBM 199 Extra"]
[Source "ChessBase"]
[SourceDate "2021.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2021.01.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. 0-0 Bg7 5. c3 e5 6. Na3 Nge7 7. Re1 0-0 8. Nc2 a6 9. Bf1 Qc7 10. d4 d6 11. Be3 f5 12. dxc5 Rd8 13. Bc4+ Kh8 14. Ng5 Na5 15. Nf7+ Kg8 16. cxd6 Rxd6 17. Qxd6 Qxc4 18. Qxe7 Qxf7 19. Qd8+ Qe8 20. Qxe8+ 1-0

[Event "Uppsala Young Champions 7th"]
[Site "Uppsala"]
[Date "2020.10.24"]
[Round "3"]
[White "Seo, Jung Hyun"]
[Black "Buchert, Matthaus"]
[Result "1-0"]
[ECO "B33"]
[WhiteElo "1936"]
[BlackElo "1427"]
[PlyCount "69"]
[EventDate "2020.10.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SWE"]
[SourceTitle "CBM 199 Extra"]
[Source "ChessBase"]
[SourceDate "2021.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2021.01.31"]
[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. c3 0-0 12. Nc2 Rb8 13. h4 g6 14. g3 Bg7 15. h5 Be6 16. Nce3 Ne7 17. Nxe7+ Qxe7 18. Bh3 f5 19. hxg6 fxe4 20. gxh7+ Kh8 21. Bxe6 Qxe6 22. Qd5 Qf6 23. Rh2 Qf3 24. Kd2 Bh6 25. Re1 Kxh7 26. Kc2 Rf6 27. Qc6 Rbf8 28. Qxa6 Kg7 29. Qxb5 Rd8 30. Qd5 Rc8 31. Qb7+ Rf7 32. Qxc8 d5 33. Qg4+ Kh8 34. Rxh6+ Rh7 35. Rxh7+ 1-0

[Event "Uppsala Young Champions 7th"]
[Site "Uppsala"]
[Date "2020.10.23"]
[Round "1"]
[White "Buchert, Matthaus"]
[Black "Radeva, Viktoria"]
[Result "0-1"]
[ECO "B23"]
[WhiteElo "1427"]
[BlackElo "2263"]
[PlyCount "42"]
[EventDate "2020.10.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SWE"]
[SourceTitle "CBM 199 Extra"]
[Source "ChessBase"]
[SourceDate "2021.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2021.01.31"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 e6 3. f4 d5 4. Nf3 Nc6 5. exd5 exd5 6. Bb5 Nf6 7. Bxc6+ bxc6 8. 0-0 Be7 9. b3 0-0 10. Na4 Bg4 11. Ba3 Qc7 12. Qe1 Rfe8 13. d3 Qxf4 14. Qa5 Bxf3 15. gxf3 Bd6 16. Rf2 Be5 17. Re1 Bd4 18. Ref1 Qxf3 19. Bxc5 Re5 20. Bxd4 Rg5+ 21. Rg2 Qxg2# 0-1

