[Event "Goch op 21st"]
[Site "Goch"]
[Date "2010.10.03"]
[Round "6"]
[White "Siewert, Mathias"]
[Black "Coenen, Michael"]
[Result "0-1"]
[ECO "C65"]
[WhiteElo "2184"]
[BlackElo "2325"]
[PlyCount "64"]
[EventDate "2010.09.30"]
[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. Bb5 Nf6 4. d3 Bc5 5. 0-0 d6 6. c3 0-0 7. Nbd2 Ne7 8. d4 exd4 9. cxd4 Bb6 10. h3 c6 11. Bd3 Ng6 12. Re1 Ba5 13. a3 b5 14. b4 Bc7 15. Qc2 Bd7 16. Nf1 a5 17. Bg5 h6 18. Bd2 Nh5 19. Rac1 axb4 20. axb4 Bb6 21. e5 Nhf4 22. Bf5 dxe5 23. Nxe5 Qg5 24. Bxf4 Nxf4 25. Ng3 Bxd4 26. Nxd7 Qxg3 27. Bh7+ Kh8 28. Be4 Bxf2+ 29. Kf1 Bxe1 30. Nxf8 Bxb4 31. Nd7 Re8 32. Qxc6 Nd3 0-1

[Event "Goch op 21st"]
[Site "Goch"]
[Date "2010.10.03"]
[Round "7"]
[White "Thomas, Ingo"]
[Black "Siewert, Mathias"]
[Result "1/2-1/2"]
[ECO "E76"]
[WhiteElo "2107"]
[BlackElo "2184"]
[PlyCount "82"]
[EventDate "2010.09.30"]
[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 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f4 0-0 6. Nf3 e5 7. dxe5 dxe5 8. Qxd8 Rxd8 9. Nxe5 Nxe4 10. Nxe4 f6 11. Nf3 Re8 12. Kf2 Rxe4 13. Bd3 Re8 14. Be3 Nc6 15. Rad1 Bg4 16. Bb1 Rad8 17. Rxd8 Rxd8 18. Be4 Be6 19. Bxc6 bxc6 20. b3 a5 21. Nd4 Bd7 22. Rd1 Rb8 23. Ne2 Be8 24. Nc3 Kf7 25. Na4 h5 26. g3 g5 27. f5 Bf8 28. Bc5 Be7 29. Bxe7 Kxe7 30. Nc5 Rd8 31. Rxd8 Kxd8 32. Nb7+ Kc8 33. Nxa5 Bd7 34. Ke3 Bxf5 35. Nxc6 Bb1 36. Kd2 Kd7 37. Nd4 Kd6 38. a4 Be4 39. Ke3 Bb1 40. Kd2 Be4 41. Ke3 Bb1 1/2-1/2

[Event "Goch op 21st"]
[Site "Goch"]
[Date "2010.10.02"]
[Round "5"]
[White "Czarnik, Jozef"]
[Black "Siewert, Mathias"]
[Result "0-1"]
[ECO "D01"]
[WhiteElo "2020"]
[BlackElo "2184"]
[PlyCount "88"]
[EventDate "2010.09.30"]
[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 Nf6 2. Nc3 d5 3. Bg5 Nbd7 4. Nf3 c6 5. e3 e6 6. Bd3 Be7 7. 0-0 h6 8. Bh4 0-0 9. Re1 b5 10. a3 Bb7 11. e4 dxe4 12. Nxe4 a6 13. Qe2 Nd5 14. Bg3 N7f6 15. Nc5 Qb6 16. Nxe6 Rfe8 17. Nxg7 Kxg7 18. Be5 Bc8 19. Qe4 Rh8 20. Nh4 Kf8 21. Bxf6 Bxf6 22. Re3 Bxh4 23. Qxh4 Nxe3 24. fxe3 Be6 25. Qf6 Kg8 26. Rf1 Qd8 27. Qf3 Qg5 28. g3 Rf8 29. h4 Qg4 30. Qg2 h5 31. Rf4 Qg7 32. Qf2 Rh6 33. e4 Rg6 34. Kh2 Bc4 35. Bxc4 bxc4 36. Rf5 Re8 37. e5 c5 38. c3 cxd4 39. cxd4 Rb8 40. Rxh5 Rb3 41. Qg2 Qf8 42. g4 Qb8 43. Qe4 Rxb2+ 44. Kg3 Qb3+ 0-1

[Event "Goch op 21st"]
[Site "Goch"]
[Date "2010.10.02"]
[Round "4"]
[White "Siewert, Mathias"]
[Black "Dohmes, Herbert"]
[Result "1-0"]
[ECO "B12"]
[WhiteElo "2184"]
[PlyCount "137"]
[EventDate "2010.09.30"]
[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 c6 2. d4 d5 3. e5 Bf5 4. Nc3 e6 5. g4 Bg6 6. Nge2 f6 7. h4 Nd7 8. h5 Bf7 9. f4 Qc7 10. Ng3 Bb4 11. a3 Bxc3+ 12. bxc3 Ne7 13. Bd3 c5 14. Be3 c4 15. Bf1 0-0-0 16. Bh3 h6 17. 0-0 Rdf8 18. a4 g6 19. Bc1 gxh5 20. gxh5 Rfg8 21. Kh2 f5 22. Be3 Nc6 23. Qf3 Qa5 24. Bf2 Qd8 25. Rfe1 Nf8 26. Rab1 Kc7 27. Rb5 b6 28. Rbb1 Qe8 29. Rg1 Rh7 30. Rg2 Rhg7 31. Kg1 Na5 32. Ra1 Qe7 33. Nf1 Be8 34. Kh2 Qf7 35. Rxg7 Rxg7 36. Ng3 Bd7 37. Nf1 Be8 38. Ng3 Nc6 39. Qd1 a5 40. Qc1 Ne7 41. Bg2 Nc8 42. Bf3 Qe7 43. Nf1 Bf7 44. Ne3 Kb8 45. Qe1 Nh7 46. Bh4 Qe8 47. Qe2 Qc6 48. Kh3 Ka7 49. Qd1 Rg8 50. Kh2 Be8 51. Qc1 Qc7 52. Qf1 Bc6 53. Qh1 Kb7 54. Qc1 Qf7 55. Bf2 Qe8 56. Qa3 Ng5 57. fxg5 hxg5 58. Be2 g4 59. Kg2 Rh8 60. Rh1 Rxh5 61. Qa1 Rxh1 62. Qxh1 Bxa4 63. Kg3 Bc6 64. Ng2 Ka6 65. Nf4 b5 66. Be3 Nb6 67. Qh6 Bd7 68. Bc1 Kb7 69. Nh5 1-0

[Event "Goch op 21st"]
[Site "Goch"]
[Date "2010.10.01"]
[Round "3"]
[White "Schaefer, Michael2222"]
[Black "Siewert, Mathias"]
[Result "0-1"]
[ECO "E94"]
[BlackElo "2184"]
[PlyCount "53"]
[EventDate "2010.09.30"]
[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 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 0-0 6. Be2 e5 7. 0-0 Na6 8. Bg5 Qe8 9. d5 h6 10. Bc1 Nc5 11. Nd2 a5 12. f3 Nh5 13. Nb3 Bd7 14. Nxc5 dxc5 15. Be3 b6 16. Qd2 Kh7 17. Bd3 Qe7 18. g4 Nf4 19. Bxf4 exf4 20. Qxf4 Be5 21. Qd2 Qh4 22. Qg2 h5 23. h3 Kg7 24. Ne2 g5 25. f4 gxf4 26. Nxf4 hxg4 27. hxg4 0-1

[Event "Goch op 21st"]
[Site "Goch"]
[Date "2010.10.01"]
[Round "2"]
[White "Siewert, Mathias"]
[Black "Aprea, Daniele"]
[Result "1/2-1/2"]
[ECO "C11"]
[WhiteElo "2184"]
[BlackElo "1827"]
[PlyCount "70"]
[EventDate "2010.09.30"]
[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. Nc3 Bb4 4. e5 Bf8 5. f4 b6 6. Nf3 Nh6 7. Bd3 Ba6 8. 0-0 c5 9. Bxa6 Nxa6 10. Ne2 Rc8 11. c3 Qd7 12. Qd3 Nb8 13. h3 Ng8 14. g4 Ne7 15. Ng3 g6 16. f5 Nbc6 17. fxe6 fxe6 18. Bd2 Nd8 19. Ng5 Nec6 20. Rf2 cxd4 21. cxd4 Nxd4 22. Qxd4 Bc5 23. Qf4 Rf8 24. Qxf8+ Bxf8 25. Be3 Qg7 26. Raf1 Be7 27. Nf3 Nc6 28. Rc1 Kd7 29. Rfc2 Bd8 30. Kg2 Ne7 31. Rxc8 Nxc8 32. Ne2 Ne7 33. Ned4 h6 34. b4 g5 35. b5 Qh8 1/2-1/2

[Event "Goch op 21st"]
[Site "Goch"]
[Date "2010.09.30"]
[Round "1"]
[White "Wiesebach, Wolfgang"]
[Black "Siewert, Mathias"]
[Result "1/2-1/2"]
[ECO "A48"]
[WhiteElo "1878"]
[BlackElo "2184"]
[PlyCount "53"]
[EventDate "2010.09.30"]
[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 Nf6 2. Bf4 g6 3. e3 Bg7 4. Nf3 d6 5. c3 0-0 6. Nbd2 c5 7. Be2 Nc6 8. Qb3 cxd4 9. exd4 e5 10. dxe5 dxe5 11. Bg5 Qc7 12. Bxf6 Bxf6 13. Ne4 Bg7 14. 0-0 Bf5 15. Nfd2 Rfd8 16. Rfd1 Rac8 17. Bf3 Na5 18. Qb5 a6 19. Qe2 h6 20. Nb3 Nxb3 21. axb3 Be6 22. b4 Bc4 23. Qe3 f5 24. Nc5 e4 25. Be2 Bf7 26. f3 Bf8 27. fxe4 1/2-1/2

[Event "GER-ch Net qual4 U25"]
[Site "Playchess.com INT"]
[Date "2009.06.17"]
[Round "5"]
[White "Schmidt, Matthias2222"]
[Black "Siewert, Mathias"]
[Result "1/2-1/2"]
[ECO "A48"]
[WhiteElo "1843"]
[BlackElo "2157"]
[PlyCount "119"]
[EventDate "2009.06.17"]
[EventType "swiss (blitz)"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 130 Extra"]
[Source "ChessBase"]
[SourceDate "2009.07.02"]
[SourceVersion "2"]
[SourceVersionDate "2009.07.15"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. e3 Bg7 4. Bd3 0-0 5. 0-0 d6 6. c3 Nfd7 7. Re1 e5 8. b3 c5 9. Bb2 Nc6 10. Nbd2 Kh8 11. d5 Ne7 12. c4 f5 13. Ng5 Nf6 14. Bc2 h6 15. Ngf3 g5 16. Nf1 g4 17. Nh4 Qe8 18. Ng3 Nh7 19. Qb1 Qf7 20. a3 Qf6 21. f4 Qxh4 22. fxe5 Qg5 23. exd6 Ng6 24. Bxg7+ Kxg7 25. e4 f4 26. Nf5+ Bxf5 27. exf5 Nh4 28. f6+ Nxf6 29. Re7+ Rf7 30. Qe1 Raf8 31. Qe6 g3 32. h3 Ng6 33. Rf1 Nxe7 34. dxe7 Re8 35. d6 Nd7 36. Qe4 Rf5 37. Qe6 Nf6 38. Bxf5 Nd7 39. Qxd7 Rxe7 40. Qxe7+ Qxe7 41. dxe7 Kf7 42. Re1 Ke8 43. Bg4 f3 44. Bxf3 h5 45. Kf1 h4 46. Ke2 Kxe7 47. Kd3+ Kd6 48. Bg4 b5 49. Ke3 bxc4 50. bxc4 Kc6 51. Kd3 Kb6 52. Kc3 Ka5 53. Kb3 a6 54. Bf5 Kb6 55. Re5 Ka5 56. Rxc5+ Kb6 57. Re5 a5 58. Re6+ Kc5 59. Rh6 a4+ 60. Kc3 1/2-1/2

[Event "GER-ch Net qual4 U25"]
[Site "Playchess.com INT"]
[Date "2009.06.17"]
[Round "7"]
[White "Siedentopf, Daniel"]
[Black "Siewert, Mathias"]
[Result "0-1"]
[ECO "A65"]
[WhiteElo "2222"]
[BlackElo "2157"]
[PlyCount "64"]
[EventDate "2009.06.17"]
[EventType "swiss (blitz)"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 130 Extra"]
[Source "ChessBase"]
[SourceDate "2009.07.02"]
[SourceVersion "2"]
[SourceVersionDate "2009.07.15"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 0-0 6. Be3 c5 7. d5 e6 8. Nge2 exd5 9. cxd5 Nbd7 10. Ng3 h5 11. Be2 h4 12. Nf1 Ne5 13. Nd2 h3 14. g4 a6 15. a4 Nh7 16. f4 Nxg4 17. Bxg4 Qh4+ 18. Bf2 Qxg4 19. Qxg4 Bxg4 20. Nc4 Rad8 21. Kd2 Bf3 22. Rhe1 Rfe8 23. Kd3 Bxc3 24. bxc3 b5 25. axb5 axb5 26. Nd2 Bg2 27. Ra5 Nf6 28. Bh4 Kg7 29. Rxb5 Rd7 30. Rb6 g5 31. Bxg5 Nxd5 32. Ra1 Nxb6 0-1

[Event "GER-ch Net qual4 U25"]
[Site "Playchess.com INT"]
[Date "2009.06.17"]
[Round "1"]
[White "Siewert, Mathias"]
[Black "Andok, Claus Michael"]
[Result "1-0"]
[ECO "C14"]
[WhiteElo "2157"]
[BlackElo "2085"]
[PlyCount "93"]
[EventDate "2009.06.17"]
[EventType "swiss (blitz)"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 130 Extra"]
[Source "ChessBase"]
[SourceDate "2009.07.02"]
[SourceVersion "2"]
[SourceVersionDate "2009.07.15"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Be7 5. e5 Nfd7 6. h4 Nc6 7. Qg4 f6 8. exf6 Nxf6 9. Bxf6 Bxf6 10. Nf3 0-0 11. 0-0-0 e5 12. Qh5 g6 13. Qh6 exd4 14. Ng5 Bxg5+ 15. hxg5 Rf7 16. Ne4 Rg7 17. Nf6+ Kf7 18. Bd3 Ne5 19. Rhe1 Nxd3+ 20. Rxd3 Bf5 21. Rxd4 c6 22. g4 Bd7 23. Rf4 Qc7 24. Nxd5+ Qxf4+ 25. Nxf4 Bxg4 26. Qh4 Rgg8 27. Qxg4 Rge8 28. Re6 Rad8 29. Rxe8 Rxe8 30. Qf3 Kg7 31. Qc3+ Kf7 32. b3 Re4 33. Qf6+ Ke8 34. f3 Re1+ 35. Kd2 Re7 36. Ne6 Kd7 37. Nc5+ Ke8 38. Qh8+ Kf7 39. Qxh7+ Kf8 40. Qh8+ Kf7 41. Qf6+ Ke8 42. Qxg6+ Kd8 43. Qf6 b6 44. g6 bxc5 45. g7 Kd7 46. Qxe7+ Kxe7 47. g8Q 1-0

[Event "GER-ch Net qual4 U25"]
[Site "Playchess.com INT"]
[Date "2009.06.17"]
[Round "6"]
[White "Siewert, Mathias"]
[Black "Erben, Larissa"]
[Result "1-0"]
[ECO "B48"]
[WhiteElo "2157"]
[BlackElo "2040"]
[PlyCount "85"]
[EventDate "2009.06.17"]
[EventType "swiss (blitz)"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 130 Extra"]
[Source "ChessBase"]
[SourceDate "2009.07.02"]
[SourceVersion "2"]
[SourceVersionDate "2009.07.15"]
[SourceQuality "1"]

1. e4 c5 2. d4 cxd4 3. Nf3 e6 4. Nxd4 Nc6 5. Nc3 Qc7 6. Be3 a6 7. Qd2 Nf6 8. 0-0-0 Bb4 9. f3 0-0 10. a3 Be7 11. g4 b5 12. Nxc6 Qxc6 13. g5 Ne8 14. Ne2 Rb8 15. Nd4 Qc7 16. Bf4 e5 17. Nf5 Bc5 18. Be3 b4 19. Bxc5 Qxc5 20. axb4 Qxb4 21. Qxb4 Rxb4 22. Ne7+ Kh8 23. Nxc8 Nc7 24. Nd6 Rfb8 25. Nc4 Ne6 26. c3 R4b7 27. h4 Nc5 28. b4 Na4 29. Kc2 Rc8 30. Kb3 Nb6 31. Nxb6 Rxb6 32. Rxd7 Rbc6 33. c4 h6 34. Be2 Rb6 35. Rxf7 a5 36. b5 Ra8 37. Ka4 Rd6 38. Rd1 Rxd1 39. Bxd1 Rd8 40. g6 Kg8 41. Bb3 Rd6 42. h5 Rd3 43. c5 1-0

[Event "GER-ch Net qual4 U25"]
[Site "Playchess.com INT"]
[Date "2009.06.17"]
[Round "3"]
[White "Siewert, Mathias"]
[Black "Strunski, Andreas"]
[Result "0-1"]
[ECO "B84"]
[WhiteElo "2157"]
[BlackElo "2329"]
[PlyCount "58"]
[EventDate "2009.06.17"]
[EventType "swiss (blitz)"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 130 Extra"]
[Source "ChessBase"]
[SourceDate "2009.07.02"]
[SourceVersion "2"]
[SourceVersionDate "2009.07.15"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. Be3 a6 7. Qd2 Nf6 8. 0-0-0 Be7 9. f4 d6 10. Be2 0-0 11. g4 b5 12. Bf3 Bb7 13. g5 Nd7 14. h4 Nc5 15. g6 fxg6 16. h5 g5 17. Bg4 b4 18. Nce2 Nxd4 19. Nxd4 gxf4 20. Nxe6 fxe3 21. Qd4 Nxe6 22. Bxe6+ Kh8 23. h6 Bf6 24. hxg7+ Qxg7 25. Qxb4 Rab8 26. Rdg1 Bxb2+ 27. Kd1 Qd4+ 28. Qxd4+ Bxd4 29. Rg4 Bc8 0-1

[Event "GER-ch Net qual4 U25"]
[Site "Playchess.com INT"]
[Date "2009.06.17"]
[Round "4"]
[White "Trella, Thomas"]
[Black "Siewert, Mathias"]
[Result "1-0"]
[ECO "A28"]
[WhiteElo "2347"]
[BlackElo "2157"]
[PlyCount "67"]
[EventDate "2009.06.17"]
[EventType "swiss (blitz)"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 130 Extra"]
[Source "ChessBase"]
[SourceDate "2009.07.02"]
[SourceVersion "2"]
[SourceVersionDate "2009.07.15"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. a3 d5 5. d4 e4 6. Ng5 dxc4 7. e3 Bf5 8. Bxc4 Bg6 9. Qb3 Qd7 10. Qxb7 Rb8 11. Qa6 Rb6 12. Qa4 h6 13. Nh3 Bd6 14. b4 Bf5 15. Ng1 0-0 16. h3 a5 17. bxa5 Ra8 18. a6 Qd8 19. Nge2 Ne7 20. Qc2 c5 21. 0-0 Qc8 22. dxc5 Bxc5 23. Ng3 Bxh3 24. Ncxe4 Nxe4 25. Qxe4 Be6 26. Bd2 Qb8 27. a4 Bxc4 28. Qxc4 Bd6 29. Ne4 Bh2+ 30. Kh1 Be5 31. Bc3 Rg6 32. Rab1 Qc7 33. Qxc7 Bxc7 34. Rb7 1-0

[Event "GER-ch Net qual4 U25"]
[Site "Playchess.com INT"]
[Date "2009.06.17"]
[Round "2"]
[White "Zwahr, Paul"]
[Black "Siewert, Mathias"]
[Result "1-0"]
[ECO "B80"]
[WhiteElo "2276"]
[BlackElo "2157"]
[PlyCount "69"]
[EventDate "2009.06.17"]
[EventType "swiss (blitz)"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 130 Extra"]
[Source "ChessBase"]
[SourceDate "2009.07.02"]
[SourceVersion "2"]
[SourceVersionDate "2009.07.15"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e6 7. f3 b5 8. Qd2 Nbd7 9. g4 Nb6 10. g5 Nfd7 11. 0-0-0 Bb7 12. Bd3 Rc8 13. h4 Qc7 14. h5 d5 15. g6 hxg6 16. hxg6 Rxh1 17. Rxh1 e5 18. exd5 exd4 19. Bxd4 f6 20. Re1+ Kd8 21. Bf5 Bd6 22. Qe2 Bf4+ 23. Kb1 Ne5 24. Qe4 Nbc4 25. Qxf4 b4 26. Na4 Rb8 27. Rh1 Bxd5 28. Bc5 Qa5 29. Qd4 Ne3 30. b3 Kc7 31. Qxe3 Rd8 32. Bb6+ Kc6 33. Bxa5 Rb8 34. Qc5+ Kb7 35. Qxd5+ 1-0

[Event "GER-ch Net qual3 U25"]
[Site "Playchess.com INT"]
[Date "2009.05.17"]
[Round "4"]
[White "Gaitzsch, Martin"]
[Black "Siewert, Mathias"]
[Result "0-1"]
[ECO "D45"]
[WhiteElo "2030"]
[BlackElo "2157"]
[PlyCount "90"]
[EventDate "2009.05.17"]
[EventType "swiss (blitz)"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 130 Extra"]
[Source "ChessBase"]
[SourceDate "2009.07.02"]
[SourceVersion "2"]
[SourceVersionDate "2009.07.15"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 e6 5. e3 Nbd7 6. Qc2 Bd6 7. g4 Bb4 8. Bd2 b6 9. Bd3 Ba6 10. cxd5 Bxd3 11. Qxd3 exd5 12. g5 Bxc3 13. Bxc3 Ne4 14. h4 Qe7 15. Nd2 Nxd2 16. Bxd2 Qe4 17. Ke2 Qxd3+ 18. Kxd3 0-0-0 19. Bb4 Kb7 20. Bd6 c5 21. dxc5 bxc5 22. Rhc1 c4+ 23. Kd4 Kc6 24. Bf4 Rhe8 25. f3 Nc5 26. b3 Ne6+ 27. Ke5 Nxg5+ 28. Kf5 Nxf3 29. bxc4 d4 30. e4 h5 31. Bg3 Re6 32. e5 d3 33. Ke4 Nd2+ 34. Kf5 g6+ 35. Kf4 Kc5 36. Bf2+ Kb4 37. Bxa7 Rc8 38. Ke3 Nxc4+ 39. Kxd3 Nxe5+ 40. Kd2 Nf3+ 41. Kd3 Rd8+ 42. Kc2 Re2+ 43. Kb1 Nd2+ 44. Kc2 Nc4+ 45. Kb1 Na3# 0-1

[Event "GER-ch Net qual3 U25"]
[Site "Playchess.com INT"]
[Date "2009.05.17"]
[Round "3"]
[White "Hoffmann, Paul"]
[Black "Siewert, Mathias"]
[Result "1-0"]
[ECO "B54"]
[WhiteElo "2340"]
[BlackElo "2157"]
[PlyCount "91"]
[EventDate "2009.05.17"]
[EventType "swiss (blitz)"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 130 Extra"]
[Source "ChessBase"]
[SourceDate "2009.07.02"]
[SourceVersion "2"]
[SourceVersionDate "2009.07.15"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. f3 a6 6. c4 e6 7. Nc3 Be7 8. Be3 0-0 9. Be2 Nc6 10. 0-0 Bd7 11. Qd2 Qc7 12. Rac1 Rfd8 13. Nd5 Qb8 14. Nb6 Ra7 15. Nxd7 Nxd7 16. Nxc6 bxc6 17. Bxa7 Qxa7+ 18. Kh1 Bf6 19. Qxd6 Ne5 20. Qa3 Be7 21. Qc3 Bf6 22. Rcd1 Rb8 23. Qd2 Qc5 24. b3 g5 25. f4 Ng6 26. f5 Nf4 27. fxe6 fxe6 28. Bg4 Rd8 29. Qc2 Rf8 30. g3 h5 31. gxf4 hxg4 32. f5 Kg7 33. Qf2 Qe5 34. Qg2 g3 35. Qxg3 Qxe4+ 36. Qg2 exf5 37. Rd7+ Kg6 38. Qxe4 fxe4 39. Rd6 g4 40. Re6 Kg5 41. Rxe4 Rh8 42. Rg1 Rh4 43. Kg2 Kf5 44. Re8 c5 45. Rf1+ Kg6 46. Re6 1-0

[Event "GER-ch Net qual3 U25"]
[Site "Playchess.com INT"]
[Date "2009.05.17"]
[Round "7"]
[White "Schaefer, Erik"]
[Black "Siewert, Mathias"]
[Result "1-0"]
[ECO "B84"]
[WhiteElo "2166"]
[BlackElo "2157"]
[PlyCount "131"]
[EventDate "2009.05.17"]
[EventType "swiss (blitz)"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 130 Extra"]
[Source "ChessBase"]
[SourceDate "2009.07.02"]
[SourceVersion "2"]
[SourceVersionDate "2009.07.15"]
[SourceQuality "1"]

1. e4 c5 2. d4 cxd4 3. Nf3 d6 4. Nxd4 Nf6 5. Nc3 a6 6. a4 e6 7. Be2 Be7 8. 0-0 0-0 9. f4 Qc7 10. Be3 b6 11. Bf3 Bb7 12. Nb3 Nbd7 13. Rf2 Rad8 14. Rd2 Nc5 15. Nxc5 dxc5 16. Rxd8 Rxd8 17. Qe2 e5 18. f5 c4 19. Rd1 Rxd1+ 20. Qxd1 Bc5 21. Kf2 Bxe3+ 22. Kxe3 Qc5+ 23. Ke2 Qd4 24. Qd2 Kf8 25. Qe3 h6 26. g4 Ke7 27. h4 Kd6 28. g5 Qxe3+ 29. Kxe3 hxg5 30. hxg5 Nh7 31. g6 fxg6 32. fxg6 Nf8 33. Bh5 Ne6 34. Ne2 Kc5 35. c3 Bc6 36. Bg4 Ng5 37. Ng3 Bxa4 38. Nh5 Be8 39. Bf5 b5 40. Nxg7 Bxg6 41. Bxg6 b4 42. Be8 a5 43. Nf5 Ne6 44. Ne7 Nf4 45. Kd2 Nd3 46. Kc2 Ne1+ 47. Kc1 Nd3+ 48. Kc2 Ne1+ 49. Kb1 Nf3 50. Kc1 Ng5 51. Bg6 a4 52. Nd5 bxc3 53. bxc3 Ne6 54. Kb2 Kb5 55. Be8+ Ka5 56. Bc6 Nc5 57. Ne3 Kb6 58. Ba8 Nd3+ 59. Ka3 Kb5 60. Bd5 Nf4 61. Bxc4+ Kc5 62. Kxa4 Nh3 63. Bd5 Nf2 64. Kb3 Nd3 65. Nc4 Nf4 66. Nxe5 1-0

[Event "GER-ch Net qual3 U25"]
[Site "Playchess.com INT"]
[Date "2009.05.17"]
[Round "2"]
[White "Siewert, Mathias"]
[Black "Maiorov, Daniel"]
[Result "1-0"]
[ECO "B29"]
[WhiteElo "2157"]
[BlackElo "1942"]
[PlyCount "79"]
[EventDate "2009.05.17"]
[EventType "swiss (blitz)"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 130 Extra"]
[Source "ChessBase"]
[SourceDate "2009.07.02"]
[SourceVersion "2"]
[SourceVersionDate "2009.07.15"]
[SourceQuality "1"]

1. e4 c5 2. d4 cxd4 3. Nf3 Nf6 4. e5 Nd5 5. Nxd4 Nc6 6. Nxc6 dxc6 7. Bd3 h5 8. 0-0 g6 9. Bd2 Bg7 10. c4 Nb6 11. Bc3 Be6 12. Qe2 Qd7 13. Rd1 0-0-0 14. Bc2 Qc7 15. b3 Rxd1+ 16. Qxd1 Bxe5 17. a4 Bxh2+ 18. Kh1 Be5 19. a5 Nd7 20. Qe2 h4 21. a6 b6 22. c5 b5 23. Ba5 Qb8 24. Nc3 b4 25. Qe4 bxc3 26. Qxc6+ Bc7 27. Be4 h3 28. g3 Rh5 29. b4 Nf6 30. Rd1 c2 31. Bxc2 Bd5+ 32. Rxd5 Rxd5 33. Bb3 Rd8 34. Bxf7 Nd7 35. Be6 h2 36. Kxh2 Rh8+ 37. Kg2 Rd8 38. Kg1 g5 39. Kg2 g4 40. Kg1 1-0

[Event "GER-ch Net qual3 U25"]
[Site "Playchess.com INT"]
[Date "2009.05.17"]
[Round "5"]
[White "Siewert, Mathias"]
[Black "Riegel, Frank"]
[Result "1-0"]
[ECO "B99"]
[WhiteElo "2157"]
[BlackElo "1680"]
[PlyCount "53"]
[EventDate "2009.05.17"]
[EventType "swiss (blitz)"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 130 Extra"]
[Source "ChessBase"]
[SourceDate "2009.07.02"]
[SourceVersion "2"]
[SourceVersionDate "2009.07.15"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Nbd7 8. Qf3 Be7 9. 0-0-0 Qc7 10. g4 b5 11. Bxf6 Nxf6 12. g5 Nd7 13. f5 Bxg5+ 14. Kb1 e5 15. Nd5 Qc5 16. Nb3 Qa7 17. h4 Be7 18. Na5 Qc5 19. b4 Qa7 20. Nc6 Qb7 21. Ncxe7 Nf6 22. Nxf6+ gxf6 23. Nd5 Bd7 24. Nxf6+ Ke7 25. Nd5+ Kf8 26. Qh5 Bc6 27. Qh6+ 1-0

[Event "GER-ch Net qual3 U25"]
[Site "Playchess.com INT"]
[Date "2009.05.17"]
[Round "6"]
[White "Siewert, Mathias"]
[Black "Rietze, Clemens"]
[Result "0-1"]
[ECO "C68"]
[WhiteElo "2157"]
[BlackElo "2194"]
[PlyCount "54"]
[EventDate "2009.05.17"]
[EventType "swiss (blitz)"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 130 Extra"]
[Source "ChessBase"]
[SourceDate "2009.07.02"]
[SourceVersion "2"]
[SourceVersionDate "2009.07.15"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. 0-0 Bg4 6. c3 Qf6 7. d4 Bxf3 8. Qxf3 Qxf3 9. gxf3 exd4 10. cxd4 0-0-0 11. Be3 g6 12. Nc3 Bg7 13. Rad1 Ne7 14. Ne2 h6 15. Rd2 Rhf8 16. Rfd1 f5 17. Nf4 g5 18. Ne6 f4 19. Nxg7 fxe3 20. fxe3 Rxf3 21. Re1 Rdf8 22. Ne6 R8f6 23. Nc5 Ng6 24. e5 Rf8 25. Ne4 Nh4 26. Nf6 R3xf6 27. exf6 Nf3+ 0-1

[Event "GER-ch Net qual3 U25"]
[Site "Playchess.com INT"]
[Date "2009.05.17"]
[Round "1"]
[White "Zwahr, Paul"]
[Black "Siewert, Mathias"]
[Result "1-0"]
[ECO "B80"]
[WhiteElo "2276"]
[BlackElo "2157"]
[PlyCount "69"]
[EventDate "2009.05.17"]
[EventType "swiss (blitz)"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 130 Extra"]
[Source "ChessBase"]
[SourceDate "2009.07.02"]
[SourceVersion "2"]
[SourceVersionDate "2009.07.15"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e6 7. f3 b5 8. Qd2 Nbd7 9. 0-0-0 Bb7 10. g4 Nb6 11. Nb3 b4 12. Nb1 d5 13. Na5 Qc7 14. Bxb6 Qxb6 15. Nxb7 Qxb7 16. g5 Nd7 17. exd5 e5 18. f4 Bd6 19. Bg2 0-0 20. f5 Rfc8 21. g6 hxg6 22. fxg6 f6 23. Bh3 b3 24. axb3 Nc5 25. Bxc8 Rxc8 26. Nc3 a5 27. Kb1 Rb8 28. Na2 a4 29. b4 a3 30. bxa3 Qa6 31. Qe3 Na4 32. Ka1 Bc5 33. bxc5 Nb2 34. Rb1 Nc4 35. Rxb8+ 1-0

[Event "GER-ch Net qual1 U25"]
[Site "Playchess.com INT"]
[Date "2009.05.10"]
[Round "1"]
[White "Coenen, Michael"]
[Black "Siewert, Mathias"]
[Result "1-0"]
[ECO "B81"]
[WhiteElo "2260"]
[BlackElo "2157"]
[PlyCount "115"]
[EventDate "2009.05.10"]
[EventType "swiss (blitz)"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 130 Extra"]
[Source "ChessBase"]
[SourceDate "2009.07.02"]
[SourceVersion "2"]
[SourceVersionDate "2009.07.15"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e6 7. g4 e5 8. Nf5 h5 9. g5 Nxe4 10. Nxg7+ Bxg7 11. Nxe4 d5 12. Ng3 d4 13. Bd2 Qd5 14. Rg1 Bg4 15. Be2 Nc6 16. Nxh5 Bxh5 17. Bxh5 Qe4+ 18. Qe2 Qxe2+ 19. Bxe2 Rxh2 20. Bf3 0-0-0 21. Rh1 Rdh8 22. Rxh2 Rxh2 23. Kf1 f5 24. gxf6 Bxf6 25. Kg1 Rh8 26. Be4 Rg8+ 27. Kf1 Bh4 28. Ke2 Rf8 29. f3 Rg8 30. Rh1 Rg2+ 31. Kd3 Bg5 32. Rh8+ Kc7 33. Rh7+ Kb6 34. Be1 Bc1 35. b3 Rg1 36. Ke2 Bf4 37. a4 Rg2+ 38. Kd3 a5 39. Kc4 Bg3 40. Rg7 Rxc2+ 41. Bxc2 Bxe1 42. Be4 Bd2 43. Kd5 Bf4 44. Kd6 Bh2 45. Kd7 Bf4 46. Kc8 Na7+ 47. Kb8 Nc6+ 48. Ka8 Nd8 49. Rd7 Bg5 50. Bxb7 d3 51. Be4 d2 52. Rd5 Nf7 53. Bc2 Bf4 54. Rb5+ Ka6 55. Rd5 Ng5 56. Bd1 Nxf3 57. Bxf3 Kb6 58. Rb5+ 1-0

[Event "GER-ch Net qual1 U25"]
[Site "Playchess.com INT"]
[Date "2009.05.10"]
[Round "2"]
[White "Siewert, Mathias"]
[Black "Maiorov, Daniel"]
[Result "0-1"]
[ECO "B35"]
[WhiteElo "2157"]
[BlackElo "1942"]
[PlyCount "66"]
[EventDate "2009.05.10"]
[EventType "swiss (blitz)"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 130 Extra"]
[Source "ChessBase"]
[SourceDate "2009.07.02"]
[SourceVersion "2"]
[SourceVersionDate "2009.07.15"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. Bc4 0-0 8. h3 Nc6 9. Qd2 Bd7 10. g4 Ne5 11. Be2 Rc8 12. 0-0-0 a6 13. Bh6 Bxh6 14. Qxh6 Rxc3 15. bxc3 Qa5 16. Qe3 Qxa2 17. f4 Nc4 18. Bxc4 Qxc4 19. Qd3 Qc7 20. g5 Nh5 21. f5 Rc8 22. Ne2 Bb5 23. Qe3 Bxe2 24. Qxe2 Ng3 25. Qg4 Nxh1 26. fxg6 hxg6 27. Rxh1 Qxc3 28. Rh2 Rc4 29. Qd7 Qe1+ 30. Kb2 Rb4+ 31. Ka3 a5 32. Qc8+ Kg7 33. Qc3+ Qxc3+ 0-1

[Event "Latschach op 23rd"]
[Site "Latschach"]
[Date "2007.08.13"]
[Round "4"]
[White "Riemelmoser, Stefan"]
[Black "Siewert, Mathias"]
[Result "1-0"]
[ECO "B94"]
[BlackElo "2153"]
[PlyCount "39"]
[EventDate "2007.08.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "AUT"]
[SourceTitle "CBM 120 Extra"]
[Source "ChessBase"]
[SourceDate "2007.11.01"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.01"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 Nbd7 7. f4 b5 8. Bxf6 gxf6 9. Ne6 Qa5 10. Qh5 f5 11. Ng5 Nf6 12. Qxf7+ Kd8 13. e5 Ne4 14. Ngxe4 fxe4 15. 0-0-0 Bg4 16. Be2 Bxe2 17. Nxe2 Kc8 18. Nd4 dxe5 19. Qe6+ Kc7 20. Nc6 1-0

[Event "Latschach op 23rd"]
[Site "Latschach"]
[Date "2007.08.12"]
[Round "3"]
[White "Siewert, Mathias"]
[Black "Mencinger, Vojko"]
[Result "0-1"]
[ECO "B78"]
[WhiteElo "2153"]
[BlackElo "2366"]
[PlyCount "68"]
[EventDate "2007.08.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "AUT"]
[SourceTitle "CBM 120 Extra"]
[Source "ChessBase"]
[SourceDate "2007.11.01"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.01"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 Nc6 8. Qd2 0-0 9. Bc4 Bd7 10. 0-0-0 Rc8 11. Bb3 Ne5 12. Kb1 Rc5 13. h4 h5 14. Bh6 a5 15. g4 Bxh6 16. Qxh6 Rxc3 17. bxc3 a4 18. gxh5 axb3 19. cxb3 Qa5 20. hxg6 fxg6 21. h5 Kf7 22. hxg6+ Nxg6 23. Rdg1 Rg8 24. Kb2 Qd8 25. Qe3 Qb6 26. Qe2 e5 27. Qc4+ d5 28. exd5 exd4 29. cxd4 Qd6 30. Rg5 b5 31. Qc5 Qf4 32. Rhg1 Rc8 33. Qb4 Bf5 34. R1g2 Qc1# 0-1

[Event "Rheinland Pfalz-ch MT-A 26th"]
[Site "Ludwigshafen"]
[Date "2007.07.21"]
[Round "11"]
[White "Siewert, Mathias"]
[Black "Hoegerl, Gerd"]
[Result "1/2-1/2"]
[ECO "C42"]
[WhiteElo "2153"]
[BlackElo "2196"]
[PlyCount "146"]
[EventDate "2007.07.13"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 2008"]
[Source "ChessBase"]
[SourceDate "2007.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. Nc3 Nf6 6. d4 Be7 7. Bd3 0-0 8. 0-0 Re8 9. Re1 Nc6 10. Ne2 Bg4 11. c3 Bxf3 12. gxf3 d5 13. Kh1 Bd6 14. Rg1 Kh8 15. Bg5 h6 16. Bh4 Be7 17. Bc2 Rg8 18. Qd3 g6 19. Nf4 Nh7 20. Bg3 Bd6 21. Qb5 Ne7 22. Rae1 c6 23. Qe2 Qd7 24. Nd3 Bxg3 25. fxg3 Rae8 26. Qe5+ f6 27. Qf4 Qf5 28. Re3 Kg7 29. Rge1 Qxf4 30. Nxf4 Kf7 31. Nxg6 Nc8 32. Rxe8 Rxe8 33. Rxe8 Kxe8 34. Kg2 Nd6 35. Nh4 Ng5 36. Nf5 Nxf5 37. Bxf5 Ke7 38. h4 Nf7 39. Bd3 b6 40. g4 c5 41. Kf2 cxd4 42. cxd4 a5 43. Ke3 Nd8 44. f4 Nf7 45. b3 Kd6 46. Bb5 Ke6 47. Bd3 Kd6 48. Bh7 Kc6 49. Bg8 Nd6 50. g5 Nf5+ 51. Kd3 fxg5 52. hxg5 hxg5 53. fxg5 Kd6 54. Bf7 b5 55. b4 axb4 56. Bh5 b3 57. axb3 b4 58. Bg4 Ne7 59. Ke3 Nc6 60. g6 Ke7 61. Bf3 Ke6 62. g7 Ne7 63. Kf4 Kf6 64. g8Q Nxg8 65. Bxd5 Ne7 66. Ke4 Nc8 67. Bc4 Nb6 68. d5 Ke7 69. Bb5 Kd6 70. Bc6 Nc8 71. Ba8 Kc5 72. Ke5 Nd6 73. Ke6 Nc8 1/2-1/2

[Event "Rheinland Pfalz-ch MT-A 26th"]
[Site "Ludwigshafen"]
[Date "2007.07.20"]
[Round "10"]
[White "Gerstel, Uwe"]
[Black "Siewert, Mathias"]
[Result "1/2-1/2"]
[ECO "E70"]
[WhiteElo "2232"]
[BlackElo "2121"]
[PlyCount "134"]
[EventDate "2007.07.13"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 2008"]
[Source "ChessBase"]
[SourceDate "2007.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 0-0 6. Be3 e5 7. d5 Nbd7 8. Bd3 Nh5 9. Nge2 f5 10. exf5 gxf5 11. 0-0 Qe7 12. Qd2 Nc5 13. Bc2 a5 14. f4 b6 15. Rad1 e4 16. Rde1 Bd7 17. Bd4 Nf6 18. Nd1 Qf7 19. Ne3 Qg6 20. Rd1 Kh8 21. b3 Rg8 22. Kh1 Ng4 23. Bxg7+ Rxg7 24. Nxg4 Qxg4 25. Ng3 b5 26. Rde1 Qh4 27. Qd4 Kg8 28. Re3 bxc4 29. bxc4 Rf7 30. Nh5 Qxh5 31. Rg3+ Qg6 32. Rxg6+ hxg6 33. h4 Raf8 34. g3 Rh7 35. Kg2 Kf7 36. Kf2 Rb8 37. Ke3 Rb4 38. Qc3 Ba4 39. a3 Rb6 40. Bxa4 Nxa4 41. Qxa5 Nc5 42. Qa8 Rg7 43. Qc8 Rb3+ 44. Kf2 Rb7 45. h5 gxh5 46. Qxf5+ Ke7 47. Re1 Rb3 48. Rxe4+ Nxe4+ 49. Qxe4+ Kd8 50. f5 Rb2+ 51. Kf1 Re7 52. Qh4 Rb1+ 53. Kf2 Rb2+ 54. Kf3 Rb3+ 55. Kf4 Rbe3 56. Qxh5 R7e4+ 57. Kg5 Rxg3+ 58. Kf6 Rxa3 59. Kg6 Rg3+ 60. Kf7 Re7+ 61. Kf8 Rge3 62. f6 Re8+ 63. Kg7 Rg3+ 64. Kf7 Rgg8 65. Qh6 Kd7 66. Qh3+ Kd8 67. Qh6 Kd7 1/2-1/2

[Event "Rheinland Pfalz-ch MT-A 26th"]
[Site "Ludwigshafen"]
[Date "2007.07.20"]
[Round "9"]
[White "Siewert, Mathias"]
[Black "Bruch, Jochen"]
[Result "1-0"]
[ECO "B81"]
[WhiteElo "2121"]
[BlackElo "2248"]
[PlyCount "57"]
[EventDate "2007.07.13"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 2008"]
[Source "ChessBase"]
[SourceDate "2007.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. g4 h6 7. h3 a6 8. Bg2 Qc7 9. Be3 Bd7 10. f4 g6 11. Qf3 Nc6 12. 0-0-0 Be7 13. Rhe1 0-0-0 14. Qf2 Rdf8 15. Nb3 Be8 16. Bb6 Qb8 17. e5 Nd7 18. Na4 g5 19. Kb1 gxf4 20. Bxc6 bxc6 21. Na5 Nxb6 22. Nxb6+ Kc7 23. exd6+ Bxd6 24. Rxd6 Qxb6 25. Qxf4 Kc8 26. Nc4 Qc7 27. Red1 f6 28. Qe3 Bf7 29. Rd7 1-0

[Event "Rheinland Pfalz-ch MT-A 26th"]
[Site "Ludwigshafen"]
[Date "2007.07.19"]
[Round "8"]
[White "Graebner, Laurent"]
[Black "Siewert, Mathias"]
[Result "0-1"]
[ECO "B22"]
[WhiteElo "2037"]
[BlackElo "2121"]
[PlyCount "46"]
[EventDate "2007.07.13"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 2008"]
[Source "ChessBase"]
[SourceDate "2007.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.25"]
[SourceQuality "1"]

1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. d4 cxd4 5. Nf3 e6 6. cxd4 Nc6 7. Bc4 Nb6 8. Bb3 Be7 9. 0-0 0-0 10. Nc3 d6 11. Qe2 Qc7 12. Qe4 dxe5 13. dxe5 Rd8 14. Re1 Nd7 15. Ng5 Nf8 16. Qf4 Bb4 17. Qg3 Nd4 18. Nge4 Nf5 19. Qh3 b6 20. Bg5 Rd7 21. g4 Nd4 22. Re3 Bb7 23. Nf6+ gxf6 0-1

[Event "Rheinland Pfalz-ch MT-A 26th"]
[Site "Ludwigshafen"]
[Date "2007.07.18"]
[Round "7"]
[White "Siewert, Mathias"]
[Black "Schenderowitsch, Michael"]
[Result "1/2-1/2"]
[ECO "C18"]
[WhiteElo "2121"]
[BlackElo "2276"]
[PlyCount "82"]
[EventDate "2007.07.13"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 2008"]
[Source "ChessBase"]
[SourceDate "2007.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.25"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 Ne7 5. a3 Bxc3+ 6. bxc3 c5 7. Qg4 0-0 8. Bd3 f5 9. exf6 Rxf6 10. Bg5 Rf7 11. Qh5 g6 12. Qd1 Qa5 13. Bd2 Nbc6 14. Nf3 Qc7 15. 0-0 e5 16. dxe5 Nxe5 17. Nxe5 Qxe5 18. c4 Bf5 19. Be2 Bxc2 20. Qxc2 Qxe2 21. cxd5 Nxd5 22. Qxc5 Qxd2 23. Rad1 Qc3 24. Rxd5 Qxc5 25. Rxc5 Rd8 26. Rfc1 Rd2 27. R5c2 Rd3 28. Rc3 Rd2 29. R3c2 Rd3 30. Rc3 Rdd7 31. g3 Kg7 32. Kg2 Rd2 33. Rf3 Rxf3 34. Kxf3 Rd3+ 35. Ke4 Rxa3 36. Rc7+ Kf6 37. Rxb7 Ra4+ 38. Ke3 Ra3+ 39. Ke4 Ra4+ 40. Ke3 h5 41. h4 Ra3+ 1/2-1/2

[Event "Rheinland Pfalz-ch MT-A 26th"]
[Site "Ludwigshafen"]
[Date "2007.07.17"]
[Round "6"]
[White "Muranyi, Karl Jasmin"]
[Black "Siewert, Mathias"]
[Result "1-0"]
[ECO "A01"]
[WhiteElo "2357"]
[BlackElo "2121"]
[PlyCount "88"]
[EventDate "2007.07.13"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 2008"]
[Source "ChessBase"]
[SourceDate "2007.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.25"]
[SourceQuality "1"]
[WhiteTeam "Illingen"]
[WhiteTeamCountry "GER"]

1. c4 Nf6 2. Nc3 g6 3. b3 Bg7 4. Bb2 0-0 5. g3 d6 6. Bg2 e5 7. e3 c6 8. Nge2 Re8 9. 0-0 Na6 10. h3 h5 11. d4 e4 12. a3 d5 13. cxd5 cxd5 14. b4 h4 15. Nf4 Nc7 16. a4 Ne6 17. Qb3 Nxf4 18. gxf4 Be6 19. Rac1 g5 20. fxg5 Nh7 21. Ne2 Nxg5 22. Nf4 Bh6 23. Kh1 Qd7 24. Rg1 Kh7 25. Kh2 Qd6 26. Kh1 Rad8 27. b5 Rg8 28. Ba3 Qd7 29. Kh2 Bf5 30. Bc5 Rg7 31. Qa3 Rdg8 32. Be7 Ne6 33. Nh5 Rxg2+ 34. Rxg2 Rxg2+ 35. Kxg2 Kh8 36. Bf6+ Kh7 37. Bxh4 Kg6 38. Nf6 Qd8 39. Rg1 Bg5 40. Bxg5 Qh8 41. Ng4 Bxg4 42. hxg4 Nxg5 43. Qd6+ f6 44. Rh1 Qc8 1-0

[Event "Rheinland Pfalz-ch MT-A 26th"]
[Site "Ludwigshafen"]
[Date "2007.07.16"]
[Round "5"]
[White "Dann, Matthias"]
[Black "Siewert, Mathias"]
[Result "1-0"]
[ECO "B85"]
[WhiteElo "2096"]
[BlackElo "2121"]
[PlyCount "65"]
[EventDate "2007.07.13"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 2008"]
[Source "ChessBase"]
[SourceDate "2007.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e6 7. 0-0 Be7 8. f4 Qc7 9. a4 0-0 10. Bf3 Nc6 11. Be3 e5 12. Nxc6 Qxc6 13. a5 Be6 14. Nd5 Bxd5 15. exd5 Qb5 16. b3 e4 17. c4 Qe8 18. Be2 Nd7 19. b4 f5 20. Qb3 Rc8 21. Rac1 Qg6 22. Rc2 Rc7 23. Rfc1 Rfc8 24. Qa4 Bf8 25. c5 dxc5 26. d6 b5 27. axb6 Nxb6 28. Qa5 Rc6 29. bxc5 Bxd6 30. Bxa6 Nd5 31. Bxc8 Nxe3 32. cxd6 Rxc2 33. Qd8+ 1-0

[Event "Rheinland Pfalz-ch MT-A 26th"]
[Site "Ludwigshafen"]
[Date "2007.07.15"]
[Round "3"]
[White "Lang, Torsten"]
[Black "Siewert, Mathias"]
[Result "1-0"]
[ECO "E68"]
[WhiteElo "2380"]
[BlackElo "2121"]
[PlyCount "97"]
[EventDate "2007.07.13"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 2008"]
[Source "ChessBase"]
[SourceDate "2007.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 0-0 5. 0-0 d6 6. c4 Nbd7 7. Nc3 e5 8. e4 exd4 9. Nxd4 Re8 10. Re1 a6 11. Bf4 Rb8 12. Rc1 Ne5 13. b3 c5 14. Nf3 Nfg4 15. h3 Nxf3+ 16. Qxf3 Ne5 17. Qe2 Nc6 18. Qd3 Be5 19. Be3 Qa5 20. a4 Be6 21. f4 Bxc3 22. Rxc3 b5 23. axb5 axb5 24. cxb5 Rxb5 25. Rec1 Nb4 26. Qxd6 Rd8 27. Qe7 Na2 28. f5 Nxc1 29. Rxc1 Bxb3 30. fxg6 hxg6 31. Rf1 Rbb8 32. Bh6 Qb6 33. Rf6 Qb7 34. Qxc5 Be6 35. Qg5 Kh7 36. Qh4 Kg8 37. Be3 Rd1+ 38. Kh2 Qb5 39. Rxe6 fxe6 40. Qg4 Qd7 41. Qxg6+ Kh8 42. Bg5 Rf8 43. Bf6+ Rxf6 44. Qxf6+ Kg8 45. h4 Qf7 46. Qe5 Qg6 47. Bf3 Rd7 48. Kh3 Rf7 49. Bh5 1-0

[Event "Rheinland Pfalz-ch MT-A 26th"]
[Site "Ludwigshafen"]
[Date "2007.07.15"]
[Round "4"]
[White "Siewert, Mathias"]
[Black "Thieme Garmann, Alexander"]
[Result "1-0"]
[ECO "C18"]
[WhiteElo "2121"]
[BlackElo "2160"]
[PlyCount "51"]
[EventDate "2007.07.13"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 2008"]
[Source "ChessBase"]
[SourceDate "2007.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.25"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 Ne7 5. a3 Bxc3+ 6. bxc3 c5 7. Qg4 0-0 8. Bd3 f5 9. exf6 Rxf6 10. Bg5 Rf7 11. Qh5 g6 12. Qd1 Qa5 13. Bd2 c4 14. Be2 Nbc6 15. Nf3 Nf5 16. h4 Bd7 17. h5 Re8 18. Ng5 Rfe7 19. hxg6 hxg6 20. Bh5 e5 21. Bxg6 exd4+ 22. Kf1 Ng7 23. Qf3 Ne5 24. Bh7+ Kh8 25. Bf5+ Kg8 26. Qh3 1-0

[Event "Rheinland Pfalz-ch MT-A 26th"]
[Site "Ludwigshafen"]
[Date "2007.07.14"]
[Round "2"]
[White "Siewert, Mathias"]
[Black "Sieber, Patrick"]
[Result "0-1"]
[ECO "C12"]
[WhiteElo "2121"]
[BlackElo "2164"]
[PlyCount "50"]
[EventDate "2007.07.13"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 2008"]
[Source "ChessBase"]
[SourceDate "2007.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.25"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Bb4 5. e5 h6 6. Bd2 Bxc3 7. bxc3 Ne4 8. Qg4 g6 9. Bd3 Nxd2 10. Kxd2 c5 11. Nf3 Nc6 12. Qf4 Qa5 13. dxc5 Qxc5 14. Nd4 Nxd4 15. cxd4 Qc7 16. Rac1 f5 17. c4 dxc4 18. Rxc4 Qa5+ 19. Ke3 Bd7 20. Rhc1 Bc6 21. Rc5 Qxa2 22. R1c2 Qxc2 23. Qh4 Qa2 24. Qf6 f4+ 25. Qxf4 0-0-0 0-1

[Event "Rheinland Pfalz-ch MT-A 26th"]
[Site "Ludwigshafen"]
[Date "2007.07.13"]
[Round "1"]
[White "Dietzsch, Herbert"]
[Black "Siewert, Mathias"]
[Result "1/2-1/2"]
[ECO "B23"]
[WhiteElo "2201"]
[BlackElo "2121"]
[PlyCount "78"]
[EventDate "2007.07.13"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 2008"]
[Source "ChessBase"]
[SourceDate "2007.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. f4 g6 4. Bc4 Bg7 5. Nf3 e6 6. 0-0 Nge7 7. d3 0-0 8. Qe1 d5 9. Bb3 Nd4 10. Nxd4 cxd4 11. Ne2 dxe4 12. dxe4 b6 13. Ng3 Ba6 14. Rf3 Nc6 15. Bd2 Qe7 16. Rd1 Rac8 17. e5 Rfd8 18. Ne4 d3 19. c3 Na5 20. Be3 Rc7 21. Bf2 Rdd7 22. Rh3 Nc4 23. Bxc4 Rxc4 24. Bh4 Qf8 25. Bf6 d2 26. Qh4 h5 27. Bxg7 Kxg7 28. Nf6 Qc5+ 29. Kh1 Rd5 30. Nxh5+ gxh5 31. Qf6+ Kf8 32. Rxh5 Ke8 33. Rh8+ Kd7 34. Qd8+ Kc6 35. Qe8+ Kc7 36. Qb8+ Kc6 37. Qe8+ Kc7 38. Qb8+ Kc6 39. Qe8+ Kc7 1/2-1/2

[Event "GER-ch internet U25 qual 04"]
[Site "Playchess.com INT"]
[Date "2007.06.13"]
[Round "4"]
[White "Dosch, Steffen"]
[Black "Siewert, Mathias"]
[Result "0-1"]
[ECO "B95"]
[BlackElo "2121"]
[PlyCount "96"]
[EventDate "2007.06.13"]
[EventType "swiss (blitz)"]
[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 a6 6. Be2 b5 7. a3 Bb7 8. Bf3 Nbd7 9. 0-0 e6 10. Bg5 Be7 11. Re1 0-0 12. Nb3 Ne5 13. Bxf6 Bxf6 14. Be2 Qc7 15. Rc1 Rfd8 16. Bd3 Rac8 17. f4 Nc4 18. Bxc4 Qxc4 19. Re3 Qc7 20. Qg4 Qb6 21. Rce1 Bxc3 22. bxc3 Rxc3 23. Qh3 Rxe3 24. Rxe3 Rc8 25. Kf1 Rxc2 26. f5 Bc8 27. f6 e5 28. g4 Be6 29. fxg7 Bxb3 30. g5 Bc4+ 31. Kg1 Rc3 32. Kf2 Qxe3+ 33. Qxe3 Rxe3 34. Kxe3 Kxg7 35. h4 Kg6 36. Kf3 Kh5 37. Kg3 a5 38. Kh3 b4 39. axb4 axb4 40. Kg3 b3 41. Kf3 b2 42. Ke3 b1Q 43. g6 Qd3+ 44. Kf2 Qe2+ 45. Kg3 Qe3+ 46. Kg2 Qxe4+ 47. Kh2 Bf1 48. Kg3 Qf4# 0-1

[Event "GER-ch internet U25 qual 04"]
[Site "Playchess.com INT"]
[Date "2007.06.13"]
[Round "5"]
[White "Hoerter, Philip"]
[Black "Siewert, Mathias"]
[Result "0-1"]
[ECO "B21"]
[BlackElo "2121"]
[PlyCount "92"]
[EventDate "2007.06.13"]
[EventType "swiss (blitz)"]
[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. d4 cxd4 3. c3 dxc3 4. Nxc3 d6 5. Nf3 a6 6. Bc4 e6 7. Qe2 b5 8. Bb3 Ra7 9. 0-0 Rd7 10. Bg5 Be7 11. Bxe7 Qxe7 12. e5 d5 13. Rac1 Bb7 14. a4 b4 15. Nd1 a5 16. Ne3 Ba6 17. Qc2 Bxf1 18. Kxf1 Qd8 19. Qc5 Ne7 20. Ng5 0-0 21. h4 h6 22. Nh3 Ng6 23. h5 Nxe5 24. Qd4 Nbc6 25. Qf4 Qf6 26. Qg3 Nd4 27. Ba2 Nf5 28. Nxf5 Qxf5 29. Bb1 Qxh5 30. Nf4 Qg4 31. Qe3 Nc4 32. Qd3 g6 33. Nh3 Ne5 34. Qd2 Kg7 35. f3 Nxf3 36. gxf3 Qxh3+ 37. Ke1 Qh1+ 38. Ke2 Qg2+ 39. Ke3 d4+ 40. Kd3 Qxf3+ 41. Kc2 Rc8+ 42. Qc3 Qe2+ 43. Kb3 dxc3 44. Rxc3 bxc3 45. bxc3 Rb7+ 46. Ka3 Qb2# 0-1

[Event "GER-ch internet U25 qual 04"]
[Site "Playchess.com INT"]
[Date "2007.06.13"]
[Round "2"]
[White "Siedentopf, Daniel"]
[Black "Siewert, Mathias"]
[Result "1-0"]
[ECO "E85"]
[WhiteElo "2178"]
[BlackElo "2121"]
[PlyCount "37"]
[EventDate "2007.06.13"]
[EventType "swiss (blitz)"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 0-0 5. f3 d6 6. Be3 e5 7. Nge2 Nbd7 8. Qd2 Nh5 9. g4 Nhf6 10. d5 Nc5 11. 0-0-0 b6 12. Kb1 a6 13. Ng3 Rb8 14. b4 Ncd7 15. h4 b5 16. cxb5 axb5 17. h5 c5 18. dxc6 Nb6 19. Bxb5 1-0

[Event "GER-ch internet U25 qual 04"]
[Site "Playchess.com INT"]
[Date "2007.06.13"]
[Round "3"]
[White "Siewert, Mathias"]
[Black "Brener, Ilja"]
[Result "0-1"]
[ECO "C45"]
[WhiteElo "2121"]
[BlackElo "2413"]
[PlyCount "90"]
[EventDate "2007.06.13"]
[EventType "swiss (blitz)"]
[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. Nf3 Nc6 3. d4 exd4 4. Nxd4 Bc5 5. Nxc6 Qf6 6. Qf3 dxc6 7. Nc3 Be6 8. Bd2 0-0-0 9. 0-0-0 Qxf3 10. gxf3 Ne7 11. Be3 Bxe3+ 12. fxe3 Rxd1+ 13. Kxd1 f5 14. exf5 Nxf5 15. Ke2 Re8 16. e4 Nd4+ 17. Kf2 Nxc2 18. Rg1 g6 19. Ne2 Bxa2 20. h4 Bf7 21. h5 a5 22. hxg6 hxg6 23. Nf4 Rg8 24. Bh3+ Kb8 25. e5 Nd4 26. Ke3 c5 27. e6 Be8 28. Rg5 b6 29. Nd5 Rh8 30. Bg4 Bc6 31. Ne7 Bxf3 32. Nxg6 Bxg4 33. Nxh8 Bxe6 34. Ng6 Kb7 35. Nf4 Bd7 36. Nd5 Bc6 37. Ne7 Bb5 38. Rh5 a4 39. Rh7 Bc4 40. Ng6 Bb3 41. Ne5 Nb5 42. Kd3 Nd6 43. Kc3 b5 44. Nd3 Kb6 45. Rh5 Ne4# 0-1

[Event "GER-ch internet U25 qual 04"]
[Site "Playchess.com INT"]
[Date "2007.06.13"]
[Round "1"]
[White "Siewert, Mathias"]
[Black "Fruebing, Stefan"]
[Result "0-1"]
[ECO "C41"]
[WhiteElo "2121"]
[BlackElo "2301"]
[PlyCount "130"]
[EventDate "2007.06.13"]
[EventType "swiss (blitz)"]
[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. Nf3 d6 3. d4 exd4 4. Nxd4 Nf6 5. Nc3 Be7 6. Be2 0-0 7. 0-0 Re8 8. Re1 Bf8 9. Bf1 Nbd7 10. Bg5 c6 11. Qd2 h6 12. Bh4 Ne5 13. Bg3 Nh5 14. Bxe5 dxe5 15. Nb3 Qf6 16. Rad1 Nf4 17. Ne2 Ne6 18. Qe3 Qg6 19. Ng3 Nf4 20. Ne2 Nh3+ 21. Kh1 Ng5 22. Ng3 Qf6 23. Nh5 Qe7 24. Bc4 Bg4 25. Be2 Be6 26. Nd2 Qc5 27. Qxc5 Bxc5 28. Kg1 Red8 29. Ng3 g6 30. Bc4 Bg4 31. Be2 Bc8 32. Nf3 Nxf3+ 33. Bxf3 Be6 34. a3 Kf8 35. Rxd8+ Rxd8 36. Rd1 Rxd1+ 37. Bxd1 Ke7 38. Kf1 Bd4 39. b3 b5 40. Ke2 Kd6 41. Kd3 Bb2 42. a4 bxa4 43. bxa4 Kc5 44. c3 Bc1 45. Ne2 Bg5 46. g3 Bc4+ 47. Kc2 Bd8 48. Nc1 Kd6 49. Nb3 Bb6 50. Nd2 Be6 51. f3 Bg1 52. Nf1 Bc4 53. Nd2 Ba6 54. h3 Bf2 55. g4 Be1 56. Nb3 Bf1 57. Na5 Bxh3 58. Be2 h5 59. gxh5 gxh5 60. Nb7+ Ke7 61. Na5 Bd7 62. Nc4 Bg3 63. f4 h4 64. f5 f6 65. Bg4 Bc8 0-1

[Event "GER-ch internet U25 qual 04"]
[Site "Playchess.com INT"]
[Date "2007.06.13"]
[Round "7"]
[White "Siewert, Mathias"]
[Black "Gregor, Karl"]
[Result "1-0"]
[ECO "B33"]
[WhiteElo "2121"]
[PlyCount "71"]
[EventDate "2007.06.13"]
[EventType "swiss (blitz)"]
[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. Bxf6 gxf6 10. Nd5 f5 11. Bd3 f4 12. 0-0 Bg7 13. c4 b4 14. Nc2 a5 15. Qh5 0-0 16. g3 fxg3 17. fxg3 Ne7 18. Nce3 Ng6 19. Nf5 Ra7 20. h4 Be6 21. Qg4 Bxf5 22. exf5 h5 23. Qxh5 Ne7 24. f6 Ng6 25. fxg7 Kxg7 26. Qg4 Qd7 27. Bf5 Qc6 28. h5 Qc5+ 29. Kg2 Qd4 30. Qxd4 exd4 31. hxg6 fxg6 32. Bd3 Re8 33. Rae1 Rh8 34. Nf4 g5 35. Ne6+ Kg8 36. Rf8# 1-0

[Event "GER-ch internet U25 qual 04"]
[Site "Playchess.com INT"]
[Date "2007.06.13"]
[Round "6"]
[White "Siewert, Mathias"]
[Black "Nazarenus, Moritz"]
[Result "0-1"]
[ECO "B78"]
[WhiteElo "2121"]
[BlackElo "2198"]
[PlyCount "120"]
[EventDate "2007.06.13"]
[EventType "swiss (blitz)"]
[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 g6 6. Be3 Bg7 7. f3 Nc6 8. Bc4 0-0 9. Qd2 Bd7 10. Bb3 Rc8 11. 0-0-0 Ne5 12. Kb1 Nc4 13. Bxc4 Rxc4 14. g4 Qc7 15. h4 Rc8 16. h5 Qa5 17. Nd5 Qxd2 18. Rxd2 Nxd5 19. exd5 a6 20. b3 R4c7 21. hxg6 hxg6 22. Rc1 b5 23. Ne2 Bf6 24. Bd4 Kg7 25. g5 Bxd4 26. Nxd4 Rh8 27. Kb2 Rh5 28. f4 f6 29. gxf6+ Kxf6 30. Re1 Rxd5 31. c3 Rh5 32. a4 bxa4 33. b4 e5 34. fxe5+ dxe5 35. Nf3 Rf5 36. Nh4 Rf4 37. Ng2 Rf3 38. Re3 Rxe3 39. Nxe3 Ke6 40. Rg2 Be8 41. c4 Rd7 42. Kc3 Rd4 43. Nd5 Rxd5 44. cxd5+ Kxd5 45. Rd2+ Ke4 46. Re2+ Kf4 47. Rf2+ Ke3 48. Rf8 Bb5 49. Rg8 Bd3 50. Rd8 e4 51. Rd6 g5 52. Rg6 Kf4 53. Kd4 a3 54. Rf6+ Kg3 55. Rc6 a2 56. Rc1 Bb1 57. Rc3+ Kf2 58. Ra3 e3 59. Rxa6 e2 60. Rf6+ Kg2 0-1

[Event "RLP-ch MTA"]
[Site "Kaiserslautern"]
[Date "2006.08.18"]
[Round "11"]
[White "Mink, Jens"]
[Black "Siewert, Mathias"]
[Result "1-0"]
[ECO "A08"]
[WhiteElo "2149"]
[BlackElo "2078"]
[PlyCount "55"]
[EventDate "2006.08.11"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. Nf3 c5 2. g3 g6 3. Bg2 Bg7 4. 0-0 Nc6 5. d3 e6 6. e4 Nge7 7. Nbd2 0-0 8. Re1 Rb8 9. e5 Qc7 10. Qe2 Nf5 11. c3 d5 12. Nf1 b6 13. Bf4 d4 14. c4 b5 15. N1d2 bxc4 16. Nxc4 Ba6 17. Rac1 Na5 18. Nfd2 Ne7 19. b3 h6 20. Nxa5 Qxa5 21. Ne4 Rfc8 22. Nf6+ Kh8 23. Be4 Qc7 24. Qg4 g5 25. Bxg5 Qxe5 26. Bh4 h5 27. Qf3 Bh6 28. Nd7 1-0

[Event "RLP-ch MTA"]
[Site "Kaiserslautern"]
[Date "2006.08.18"]
[Round "10"]
[White "Siewert, Mathias"]
[Black "Armbrust, Florian"]
[Result "1-0"]
[ECO "B65"]
[WhiteElo "2078"]
[BlackElo "2278"]
[PlyCount "59"]
[EventDate "2006.08.11"]
[EventType "tourn"]
[EventRounds "11"]
[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 Nc6 6. Bg5 e6 7. Qd2 Be7 8. 0-0-0 Nxd4 9. Qxd4 0-0 10. f4 Qa5 11. Kb1 h6 12. h4 Rd8 13. Bd3 Bd7 14. e5 dxe5 15. fxe5 Bc6 16. Qf4 Nh5 17. Qg4 Rxd3 18. cxd3 hxg5 19. Qxh5 g6 20. Qe2 gxh4 21. d4 Rd8 22. Qf2 Rd7 23. Rhf1 Bb4 24. Qxh4 Bxc3 25. Rh1 Be4+ 26. Qxe4 Qb6 27. b3 Rxd4 28. Rxd4 Bxd4 29. Qf4 Be3 30. Qh4 1-0

[Event "RLP-ch MTA"]
[Site "Kaiserslautern"]
[Date "2006.08.17"]
[Round "9"]
[White "Fuehrer, Michael"]
[Black "Siewert, Mathias"]
[Result "0-1"]
[ECO "B21"]
[WhiteElo "1845"]
[BlackElo "2078"]
[PlyCount "30"]
[EventDate "2006.08.11"]
[EventType "tourn"]
[EventRounds "11"]
[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. c3 Nf6 5. Bc4 Nxe4 6. Qxd4 Nf6 7. Bg5 e5 8. Nxe5 dxe5 9. Bxf7+ Ke7 10. Qc4 Nc6 11. Nd2 Na5 12. 0-0-0 Nxc4 13. Nxc4 Qc7 14. Nd6 Qxd6 15. Rxd6 Kxd6 0-1

[Event "RLP-ch MTA"]
[Site "Kaiserslautern"]
[Date "2006.08.16"]
[Round "8"]
[White "Siewert, Mathias"]
[Black "Beller, Julian"]
[Result "1-0"]
[ECO "B82"]
[WhiteElo "2078"]
[BlackElo "2108"]
[PlyCount "81"]
[EventDate "2006.08.11"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Qc7 6. 0-0 Nf6 7. Nc3 d6 8. Kh1 Nbd7 9. f4 Be7 10. Qf3 b5 11. a3 Bb7 12. Bd2 h5 13. Qg3 Nc5 14. Rae1 h4 15. Qh3 Nxd3 16. cxd3 Qd7 17. Rc1 Rc8 18. Nf3 g6 19. Ne2 Rc5 20. Rxc5 dxc5 21. Ne5 Qd8 22. f5 gxf5 23. exf5 Qd5 24. Bc3 Nh5 25. fxe6 f6 26. Ng6 Rg8 27. Nef4 Nxf4 28. Nxf4 Qg5 29. Rf2 Bd6 30. Ne2 Rg6 31. Ng1 Qd5 32. Bxf6 Bf4 33. Bxh4 Be3 34. Bf6 Rh6 35. Qg4 Rxf6 36. Rxf6 Bg5 37. Qh5+ Kd8 38. Rf8+ Kc7 39. Qf3 Qd6 40. Rf7+ Be7 41. Qf6 1-0

[Event "RLP-ch MTA"]
[Site "Kaiserslautern"]
[Date "2006.08.15"]
[Round "7"]
[White "Mueller, Markus"]
[Black "Siewert, Mathias"]
[Result "1-0"]
[ECO "B52"]
[WhiteElo "2167"]
[BlackElo "2078"]
[PlyCount "81"]
[EventDate "2006.08.11"]
[EventType "tourn"]
[EventRounds "11"]
[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. Bb5+ Bd7 4. Bxd7+ Qxd7 5. c4 Nc6 6. d4 cxd4 7. Nxd4 g6 8. Nc3 Bg7 9. Nde2 Nf6 10. f3 0-0 11. 0-0 a6 12. a4 e6 13. Bg5 h6 14. Bh4 Qc7 15. Kh1 Nd7 16. Rb1 Na5 17. b3 Rfe8 18. Qd2 Qb6 19. Bf2 Qc7 20. Rfd1 Nc5 21. Qa2 Nc6 22. Qa3 Bf8 23. Bg3 Ne5 24. f4 Ng4 25. Qc1 b6 26. f5 Rad8 27. fxg6 fxg6 28. h3 Ne5 29. Qe3 Bg7 30. Bxe5 dxe5 31. b4 Nd7 32. Rdc1 Nb8 33. c5 bxc5 34. b5 Rd4 35. bxa6 Qa5 36. Qg3 Rb4 37. Qxg6 Re7 38. Rxb4 cxb4 39. Nd5 Rf7 40. Rc8+ Rf8 41. Nf6+ 1-0

[Event "RLP-ch MTA"]
[Site "Kaiserslautern"]
[Date "2006.08.14"]
[Round "6"]
[White "Siewert, Mathias"]
[Black "Muranyi, Karl Jasmin"]
[Result "0-1"]
[ECO "B12"]
[WhiteElo "2078"]
[BlackElo "2400"]
[PlyCount "124"]
[EventDate "2006.08.11"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]
[BlackTeam "Illingen"]
[BlackTeamCountry "GER"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. f4 e6 5. Nf3 h5 6. Be3 Nd7 7. Nc3 Nh6 8. Be2 Be7 9. 0-0 Bg4 10. Qe1 Nf5 11. Qf2 c5 12. Nb5 a6 13. Nd6+ Bxd6 14. exd6 Nf6 15. Bd3 c4 16. Bxf5 Bxf5 17. Ne5 Qxd6 18. b3 b5 19. a4 0-0 20. h3 Rfc8 21. Rfc1 Nd7 22. bxc4 dxc4 23. axb5 axb5 24. Qf3 Rxa1 25. Rxa1 Nxe5 26. fxe5 Qb4 27. Rc1 Qc3 28. Qf2 b4 29. Bd2 Qb2 30. d5 Rd8 31. d6 Qxe5 32. Bxb4 Qb2 33. Qd2 c3 34. Bxc3 Rxd6 35. Qe3 Qb6 36. Qxb6 Rxb6 37. Bd4 Rd6 38. Be3 Be4 39. Kf2 f6 40. c4 Ra6 41. Rd1 Ra2+ 42. Rd2 Rxd2+ 43. Bxd2 h4 44. g3 hxg3+ 45. Kxg3 e5 46. h4 g6 47. Kg4 Bf5+ 48. Kf3 Kf7 49. Bh6 Bd7 50. Ke3 Bc6 51. Kf2 f5 52. Kg3 Ba4 53. Bd2 Ke6 54. c5 Kd5 55. Bc3 Ke4 56. Kf2 f4 57. Bb2 Kf5 58. Ke2 e4 59. Bc3 Bb5+ 60. Kf2 e3+ 61. Kf3 Bc6+ 62. Ke2 Ke4 0-1

[Event "RLP-ch MTA"]
[Site "Kaiserslautern"]
[Date "2006.08.13"]
[Round "4"]
[White "Barthel, Ansgar"]
[Black "Siewert, Mathias"]
[Result "0-1"]
[ECO "B78"]
[WhiteElo "2227"]
[BlackElo "2078"]
[PlyCount "120"]
[EventDate "2006.08.11"]
[EventType "tourn"]
[EventRounds "11"]
[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 g6 6. Be3 Bg7 7. f3 0-0 8. Qd2 Nc6 9. Bc4 Bd7 10. 0-0-0 Ne5 11. Bb3 Rb8 12. Bh6 b5 13. h4 Nc4 14. Qg5 Qb6 15. Nd5 Nxd5 16. Bxg7 Kxg7 17. exd5 f6 18. Qf4 a5 19. Rhe1 Ne5 20. Ne6+ Bxe6 21. dxe6 Rfc8 22. Qd4 Qxd4 23. Rxd4 a4 24. Bd5 f5 25. a3 Rc5 26. Kd2 Rbc8 27. c3 Kf6 28. Kc2 Nc6 29. Bxc6 R8xc6 30. f4 Rc4 31. Kd3 Rxd4+ 32. cxd4 Rc4 33. g3 h6 34. Re2 Rc1 35. Re3 g5 36. hxg5+ hxg5 37. fxg5+ Kxg5 38. Kd2 Rg1 39. Rf3 Rg2+ 40. Kc3 Re2 41. d5 Re4 42. Kd3 Kf6 43. b3 axb3 44. Kc3 b2 45. Kxb2 Rd4 46. Kc3 Rxd5 47. Re3 Re5 48. Rf3 Re4 49. Kb3 Kxe6 50. Rc3 Kd5 51. Rd3+ Rd4 52. Rf3 Ke4 53. Rf4+ Ke5 54. Rf3 e6 55. Kc3 Rc4+ 56. Kb3 d5 57. Re3+ Kd6 58. Rd3 e5 59. Rd1 e4 60. Rh1 e3 0-1

[Event "RLP-ch MTA"]
[Site "Kaiserslautern"]
[Date "2006.08.13"]
[Round "5"]
[White "Dietzsch, Herbert"]
[Black "Siewert, Mathias"]
[Result "1/2-1/2"]
[ECO "D00"]
[WhiteElo "2180"]
[BlackElo "2078"]
[PlyCount "26"]
[EventDate "2006.08.11"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. d4 d5 2. Bf4 Bf5 3. e3 e6 4. c3 c6 5. Bd3 Bxd3 6. Qxd3 Bd6 7. Bxd6 Qxd6 8. Nf3 Nf6 9. 0-0 0-0 10. Ne5 Ne4 11. Nd2 Nxd2 12. Qxd2 Nd7 13. Nxd7 Qxd7 1/2-1/2

[Event "RLP-ch MTA"]
[Site "Kaiserslautern"]
[Date "2006.08.12"]
[Round "2"]
[White "Schenderowitsch, Michael"]
[Black "Siewert, Mathias"]
[Result "1/2-1/2"]
[ECO "A26"]
[WhiteElo "2251"]
[BlackElo "2078"]
[PlyCount "76"]
[EventDate "2006.08.11"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. c4 Nf6 2. g3 g6 3. Bg2 Bg7 4. Nc3 d6 5. e4 0-0 6. Nge2 e5 7. d3 Nh5 8. 0-0 f5 9. exf5 gxf5 10. f4 Nc6 11. Nd5 Ne7 12. Nec3 Nf6 13. Nxf6+ Bxf6 14. Be3 Be6 15. Qe2 Qc8 16. Rad1 a6 17. fxe5 dxe5 18. d4 f4 19. dxe5 Bxe5 20. Bxf4 Bxf4 21. Rxf4 Rxf4 22. gxf4 Ng6 23. Bxb7 Nxf4 24. Bxc8 Nxe2+ 25. Nxe2 Rxc8 26. b3 Bg4 27. Rd2 Kf7 28. Kf2 a5 29. Nc3 Ke6 30. Rd5 Rf8+ 31. Kg3 h5 32. Ne4 Rf3+ 33. Kg2 Rf5 34. Nc5+ Kf6 35. Ne4+ Ke6 36. Nc5+ Kf6 37. Ne4+ Ke6 38. Nc5+ Kf6 1/2-1/2

[Event "RLP-ch MTA"]
[Site "Kaiserslautern"]
[Date "2006.08.12"]
[Round "3"]
[White "Siewert, Mathias"]
[Black "Goreacinic, Dmitri"]
[Result "1-0"]
[ECO "B27"]
[WhiteElo "2078"]
[BlackElo "2251"]
[PlyCount "109"]
[EventDate "2006.08.11"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Qa5 3. Nc3 g6 4. Bc4 Nc6 5. 0-0 Bg7 6. d3 d6 7. Bd2 e6 8. Qe2 a6 9. a4 Qc7 10. Ng5 h6 11. Nh3 Nge7 12. f4 0-0 13. g4 Kh7 14. f5 exf5 15. gxf5 Nd4 16. Qg4 gxf5 17. Qh5 Be6 18. Ng5+ Kg8 19. Nxe6 fxe6 20. Bxh6 Nec6 21. Kh1 Qf7 22. Qh3 Bxh6 23. Qxh6 Qh7 24. Bxe6+ Kh8 25. Qxh7+ Kxh7 26. Bxf5+ Nxf5 27. Rxf5 Rxf5 28. exf5 Nd4 29. f6 Rf8 30. Rf1 Nxc2 31. Ne4 Ne3 32. Rf3 Ng4 33. Nxd6 b6 34. Nc4 b5 35. axb5 axb5 36. Nd6 Ne5 37. Re3 Rxf6 38. Rxe5 Rxd6 39. Rxc5 b4 40. Rh5+ Kg6 41. Rh3 Rc6 42. Rg3+ Kh5 43. d4 Rc1+ 44. Kg2 Rc2+ 45. Kf3 Rxb2 46. Ke4 Rxh2 47. d5 Re2+ 48. Kf5 Rf2+ 49. Ke6 Rb2 50. d6 b3 51. Re3 Kg5 52. d7 Kf4 53. Rd3 Re2+ 54. Kf6 b2 55. d8Q 1-0

[Event "RLP-ch MTA"]
[Site "Kaiserslautern"]
[Date "2006.08.11"]
[Round "1"]
[White "Siewert, Mathias"]
[Black "Herbold, Manfred"]
[Result "1-0"]
[ECO "B28"]
[WhiteElo "2078"]
[BlackElo "2197"]
[PlyCount "135"]
[EventDate "2006.08.11"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 a6 3. c3 e6 4. d4 d5 5. e5 Bd7 6. Bd3 cxd4 7. cxd4 Bb5 8. Bxb5+ axb5 9. Qd3 Qb6 10. 0-0 Nc6 11. Be3 Nge7 12. Nc3 b4 13. Ne2 Qa6 14. Nf4 Qxd3 15. Nxd3 h6 16. Nc5 Ra7 17. Rfc1 b6 18. Nb3 Kd7 19. Rc2 Nc8 20. Ne1 Ra4 21. Nc1 Be7 22. b3 Ra3 23. f4 N8a7 24. Rf2 Nb5 25. Nc2 Ra7 26. Kf1 Rha8 27. Ke2 Nc3+ 28. Kd3 Nxa2 29. Ne2 f5 30. g4 fxg4 31. f5 Nd8 32. Rg1 exf5 33. Rxf5 Ne6 34. Rxg4 Rc7 35. Bd2 Rac8 36. Ne3 Nc3 37. Bxc3 bxc3 38. Nxd5 c2 39. Nxb6+ Ke8 40. Nxc8 Rxc8 41. Rf1 Bg5 42. Nc1 h5 43. Re4 Rd8 44. b4 Nc7 45. Kxc2 Nd5 46. Kb3 Rc8 47. Na2 Bd2 48. Rf2 Be3 49. Rc2 Rd8 50. Rc5 Bd2 51. b5 g5 52. Kc4 Nb6+ 53. Kd3 Ba5 54. e6 Nd5 55. Re5 Nf4+ 56. Ke4 Ke7 57. d5 Bd2 58. Rc7+ Ke8 59. b6 Ng6 60. e7 Ra8 61. b7 Ra4+ 62. Kd3 Nxe5+ 63. Kxd2 Rxa2+ 64. Kc3 Nd7 65. Rxd7 Kxd7 66. b8Q Kxe7 67. d6+ Ke6 68. Qb3+ 1-0

[Event "Hassloch op 21st"]
[Site "Hassloch"]
[Date "2006.06.05"]
[Round "6"]
[White "Siewert, Mathias"]
[Black "Busch, Lorenz"]
[Result "0-1"]
[ECO "C14"]
[WhiteElo "2078"]
[BlackElo "2225"]
[PlyCount "70"]
[EventDate "2006.06.02"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 112 Extra"]
[Source "ChessBase"]
[SourceDate "2006.07.14"]
[SourceVersion "1"]
[SourceVersionDate "2006.07.14"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Be7 5. e5 Nfd7 6. h4 a6 7. Qg4 Bxg5 8. hxg5 c5 9. g6 f5 10. Qf4 h6 11. Nf3 Nf8 12. Qg3 cxd4 13. Nxd4 Nc6 14. 0-0-0 Bd7 15. Kb1 Nxd4 16. Rxd4 Qe7 17. Ne2 Bb5 18. Nf4 Bxf1 19. Rxf1 Rc8 20. Qb3 Rc6 21. Rfd1 Qc5 22. Nxd5 exd5 23. Rxd5 Qc4 24. Rd8+ Ke7 25. Qa3+ Rc5 26. Ka1 Nxg6 27. R8d7+ Ke8 28. Qg3 Qg4 29. Rd8+ Kf7 30. Qb3+ Qc4 31. Qxb7+ Rc7 32. R1d7+ Ne7 33. e6+ Kf6 34. Qf3 Rxd7 35. Rxd7 Qxe6 0-1

[Event "Hassloch op 21st"]
[Site "Hassloch"]
[Date "2006.06.02"]
[Round "1"]
[White "Thinius, Marco"]
[Black "Siewert, Mathias"]
[Result "1-0"]
[ECO "B76"]
[WhiteElo "2353"]
[BlackElo "2078"]
[PlyCount "81"]
[EventDate "2006.06.02"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "CBM 112 Extra"]
[Source "ChessBase"]
[SourceDate "2006.07.14"]
[SourceVersion "1"]
[SourceVersionDate "2006.07.14"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 0-0 8. Qd2 Nc6 9. 0-0-0 d5 10. Kb1 Nxd4 11. e5 Nf5 12. exf6 Bxf6 13. Nxd5 Qxd5 14. Qxd5 Nxe3 15. Qd3 Nxd1 16. Qxd1 Be6 17. Bb5 Rfd8 18. Qe2 Rd4 19. Rd1 Rad8 20. Rxd4 Rxd4 21. g3 h5 22. Bd3 Kg7 23. a3 a6 24. f4 Rd5 25. Qf3 Rd7 26. f5 Bd5 27. Qe2 b5 28. g4 g5 29. gxh5 Kh6 30. Qe3 Bb7 31. h4 Rd6 32. hxg5+ Bxg5 33. Qg3 Bc6 34. Qg4 a5 35. Qe2 b4 36. axb4 axb4 37. Qe5 Bf6 38. Qf4+ Bg5 39. Qxb4 Kxh5 40. Qb8 Bd5 41. Be2+ 1-0

[Event "RLP-chB"]
[Site "Dittweiler"]
[Date "2004.??.??"]
[Round "6"]
[White "Drizovskiy, Alexander"]
[Black "Siewert, Mathias"]
[Result "1/2-1/2"]
[ECO "B22"]
[WhiteElo "2104"]
[BlackElo "2132"]
[PlyCount "52"]
[EventDate "2004.??.??"]
[EventType "swiss"]
[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. c3 Nf6 3. e5 Nd5 4. d4 cxd4 5. cxd4 d6 6. Nf3 Nc6 7. a3 e6 8. Bd3 Be7 9. 0-0 0-0 10. Bd2 Rb8 11. Nc3 Nxc3 12. Bxc3 b5 13. Qe2 dxe5 14. Qe4 f5 15. Qxc6 Rb6 16. Ba5 Rxc6 17. Bxd8 Rxd8 18. Nxe5 Rb6 19. Rac1 Bb7 20. Rc7 Bd6 21. Rd7 Re8 22. a4 Bxe5 23. a5 Rd6 24. Rxb7 Bxd4 25. Bxb5 Rc8 26. b3 Rc2 1/2-1/2

[Event "RLP-chB"]
[Site "Dittweiler"]
[Date "2004.??.??"]
[Round "2"]
[White "Henschel, Friedrich"]
[Black "Siewert, Mathias"]
[Result "0-1"]
[ECO "A01"]
[BlackElo "2132"]
[PlyCount "68"]
[EventDate "2004.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. b3 e5 2. Bb2 Nc6 3. e3 d6 4. c4 Bf5 5. a3 Bg6 6. Nc3 f5 7. Be2 Nf6 8. Nh3 h6 9. f4 e4 10. Nf2 h5 11. Nh3 Qd7 12. Ng5 h4 13. b4 Ne7 14. Nb5 Nc6 15. Ne6 Rc8 16. Nxf8 Rxf8 17. Rc1 a6 18. Nc3 Ne7 19. a4 d5 20. a5 Bf7 21. Na4 Qd8 22. Nc5 Rb8 23. Bxf6 gxf6 24. Bh5 Rh8 25. Qa4+ c6 26. Be2 Rg8 27. g3 Kf8 28. cxd5 Nxd5 29. gxh4 Qe7 30. Kf2 Rd8 31. Nb3 Qd6 32. Nd4 Nxf4 33. Nxf5 Nh3+ 34. Kf1 Qxh2 0-1

[Event "RLP-chB"]
[Site "Dittweiler"]
[Date "2004.??.??"]
[Round "4"]
[White "Lantzsch, Christian"]
[Black "Siewert, Mathias"]
[Result "1-0"]
[ECO "A24"]
[WhiteElo "2095"]
[BlackElo "2132"]
[PlyCount "81"]
[EventDate "2004.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 g6 3. g3 Bg7 4. Bg2 0-0 5. Nf3 d6 6. 0-0 c6 7. Rb1 e5 8. d3 a5 9. a3 Be6 10. b4 axb4 11. axb4 h6 12. Qb3 Nbd7 13. b5 Nc5 14. Qc2 Nfd7 15. Nd2 Qc7 16. Nb3 f5 17. Nxc5 Nxc5 18. Be3 Nd7 19. Rb2 f4 20. Bd2 Nc5 21. Rfb1 e4 22. Bxe4 Nxe4 23. dxe4 fxg3 24. hxg3 Qf7 25. Be3 Ra3 26. Rb3 Rxb3 27. Rxb3 Bxc4 28. Ra3 d5 29. Bc5 Rc8 30. b6 d4 31. Nd1 Qe6 32. Nb2 Bb5 33. Kg2 Re8 34. f3 Kh7 35. Nd3 Be5 36. Ra7 Qd7 37. Qb3 Kg7 38. Nxe5 Rxe5 39. Ra8 Rxc5 40. Qg8+ Kf6 41. Qf8+ 1-0

[Event "RLP-chB"]
[Site "Dittweiler"]
[Date "2004.??.??"]
[Round "1"]
[White "Siewert, Mathias"]
[Black "Benkel, Benjamin"]
[Result "1-0"]
[ECO "B12"]
[WhiteElo "2132"]
[PlyCount "91"]
[EventDate "2004.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2009"]
[Source "ChessBase"]
[SourceDate "2008.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2008.11.26"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nc3 e6 5. g4 Bg6 6. Nge2 Bb4 7. Be3 Nd7 8. Qd2 h5 9. a3 Bxc3 10. Nxc3 hxg4 11. Be2 Bf5 12. 0-0-0 Ne7 13. Rdg1 Qc7 14. Bxg4 Bxg4 15. Rxg4 Nf5 16. Bf4 0-0-0 17. Ne2 c5 18. Kb1 c4 19. Ng3 Nxg3 20. fxg3 g6 21. Bg5 Rde8 22. Rf4 Rh7 23. Rhf1 Nb8 24. h4 Nc6 25. Qf2 Rf8 26. Rf6 Qb6 27. c3 Ne7 28. g4 Qc6 29. Qc2 Qe8 30. h5 Rhh8 31. R6f4 gxh5 32. Bf6 Ng6 33. Bxh8 Nxf4 34. Bf6 Ng6 35. gxh5 Ne7 36. h6 Ng6 37. Bg7 Rg8 38. Qf2 Nh8 39. Qf6 Qd8 40. h7 Re8 41. Bxh8 Rxh8 42. Qxf7 Qd7 43. Qg8+ Qe8 44. Rg1 Kc7 45. Qxe8 Rxe8 46. Rg8 1-0

[Event "RLP-chB"]
[Site "Dittweiler"]
[Date "2004.??.??"]
[Round "3"]
[White "Siewert, Mathias"]
[Black "Hofmann, Christian"]
[Result "1-0"]
[ECO "B43"]
[WhiteElo "2132"]
[BlackElo "2056"]
[PlyCount "57"]
[EventDate "2004.??.??"]
[EventType "swiss"]
[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 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 Qc7 6. Bd3 Nf6 7. 0-0 Nc6 8. Nb3 Be7 9. f4 d6 10. a4 b6 11. Kh1 Bb7 12. Qe2 Nb8 13. e5 Nfd7 14. exd6 Bxd6 15. f5 e5 16. Bg5 Nf6 17. Bxf6 gxf6 18. Ne4 Nd7 19. Rad1 Bf8 20. Qh5 Qc6 21. Rfe1 Rg8 22. Bb5 axb5 23. Rxd7 Rg7 24. Nxf6+ Qxf6 25. Rxb7 0-0-0 26. Qf3 Rd7 27. Rxd7 Kxd7 28. Qb7+ Ke8 29. Qc8+ 1-0

[Event "RLP-chB"]
[Site "Dittweiler"]
[Date "2004.??.??"]
[Round "7"]
[White "Siewert, Mathias"]
[Black "Mohr, Peter"]
[Result "1/2-1/2"]
[ECO "B79"]
[WhiteElo "2132"]
[PlyCount "51"]
[EventDate "2004.??.??"]
[EventType "swiss"]
[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 g6 6. Be3 Bg7 7. f3 0-0 8. Qd2 Nc6 9. Bc4 Bd7 10. 0-0-0 Ne5 11. Bb3 Qa5 12. h4 Rfc8 13. h5 Nxh5 14. g4 Nf6 15. Kb1 Rxc3 16. Qxc3 Qxc3 17. bxc3 Rc8 18. Kb2 Nc4+ 19. Bxc4 Rxc4 20. Ne2 Nxg4 21. Bxa7 Ne5 22. Rd4 Rc7 23. Rb4 b5 24. Bd4 Nxf3 25. Bxg7 Kxg7 26. Nd4 1/2-1/2

[Event "RLP-chB"]
[Site "Dittweiler"]
[Date "2004.??.??"]
[Round "5"]
[White "Siewert, Mathias"]
[Black "Paul, Alexander"]
[Result "1-0"]
[ECO "B75"]
[WhiteElo "2132"]
[PlyCount "61"]
[EventDate "2004.??.??"]
[EventType "swiss"]
[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 g6 6. Be3 Bg7 7. f3 Nc6 8. Qd2 e6 9. 0-0-0 0-0 10. h4 h5 11. Rg1 d5 12. Nxc6 bxc6 13. g4 Qc7 14. e5 Nd7 15. gxh5 Nxe5 16. Bf4 Qb6 17. Bxe5 Qxg1 18. Bd3 Qb6 19. Bxg7 Kxg7 20. hxg6 f6 21. h5 Rh8 22. Rh1 Rh6 23. Nd1 Rb8 24. b3 a5 25. Ne3 f5 26. Kb1 a4 27. Qh2 Rb7 28. Qe5+ Kf8 29. Qf6+ Kg8 30. Nxf5 exf5 31. Re1 1-0

[Event "SJRP-ch U16"]
[Site "Germany"]
[Date "2002.04.06"]
[Round "7"]
[White "Siewert, Mathias"]
[Black "Kleine, Jannik"]
[Result "1-0"]
[ECO "C50"]
[WhiteElo "1747"]
[BlackElo "1565"]
[PlyCount "27"]
[EventDate "2002.04.02"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nd4 4. 0-0 Nxf3+ 5. Qxf3 Nf6 6. d4 d6 7. Qb3 Qe7 8. dxe5 dxe5 9. Nc3 g6 10. Bg5 Bg7 11. Nd5 Qd8 12. Rad1 Bd7 13. Qf3 0-0 14. Bxf6 1-0

[Event "SJRP-ch U16"]
[Site "Germany"]
[Date "2002.04.05"]
[Round "6"]
[White "Kurtz, Alexander"]
[Black "Siewert, Mathias"]
[Result "0-1"]
[ECO "B95"]
[WhiteElo "1664"]
[BlackElo "1747"]
[PlyCount "94"]
[EventDate "2002.04.02"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. Nc3 Nf6 4. d4 cxd4 5. Nxd4 a6 6. Bg5 e6 7. Bd3 Be7 8. Nf3 0-0 9. Qe2 Qc7 10. h4 Nc6 11. a3 b5 12. b4 Nxb4 13. 0-0 Nc6 14. Na2 Bb7 15. Rfc1 Rfd8 16. Nb4 h6 17. Nxc6 Qxc6 18. Bd2 Nxe4 19. Nd4 Qd5 20. Qxe4 Qxe4 21. Bxe4 Bxe4 22. f3 Bb7 23. h5 Bf6 24. c3 Rac8 25. Ne2 Rc5 26. Ng3 Rdc8 27. Rd1 d5 28. Ne2 Rc4 29. Kf2 a5 30. Rab1 Ba6 31. g3 Ra4 32. Rb3 Be7 33. Ra1 Rcc4 34. Nc1 b4 35. Nd3 Rc8 36. Nb2 Rxa3 37. Rbxa3 bxa3 38. Nd1 Bc4 39. Ne3 Bb3 40. Ke2 a2 41. Ng2 Bf6 42. Kd3 Bc4+ 43. Kc2 a4 44. Ne1 d4 45. Nd3 Bb3+ 46. Kc1 dxc3 47. Bf4 Be7 0-1

[Event "SJRP-ch U16"]
[Site "Germany"]
[Date "2002.04.04"]
[Round "5"]
[White "Schluenss, Florian"]
[Black "Siewert, Mathias"]
[Result "1-0"]
[ECO "A24"]
[WhiteElo "1641"]
[BlackElo "1747"]
[PlyCount "101"]
[EventDate "2002.04.02"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 g6 3. g3 Bg7 4. Bg2 d6 5. d3 c6 6. Nf3 0-0 7. Bd2 Nbd7 8. 0-0 e5 9. Rb1 a5 10. a3 Ne8 11. e4 f5 12. exf5 gxf5 13. Nh4 Nc5 14. Qe2 a4 15. f4 Nc7 16. Rbd1 Bd7 17. fxe5 dxe5 18. Qh5 Be8 19. Qg5 Bg6 20. Nxg6 Qxg5 21. Bxg5 hxg6 22. Be7 N7e6 23. Bxf8 Rxf8 24. Rf3 Rd8 25. Kf1 Bh6 26. Ke1 Nd4 27. Rf2 Be3 28. Rf1 Nc2+ 29. Ke2 Nb3 30. Rh1 Nbd4+ 31. Kf1 Bh6 32. Kf2 Be3+ 33. Kf1 Bh6 34. Kf2 Ne3 35. Nxa4 Ng4+ 36. Kf1 Ne3+ 37. Kf2 e4 38. dxe4 fxe4 39. Bxe4 Rf8+ 40. Ke1 Nec2+ 41. Bxc2 Nxc2+ 42. Ke2 Ne3 43. Rd7 Nxc4 44. Rxb7 Re8+ 45. Kd3 Nd2 46. Rc7 Nf3 47. Nc3 Re3+ 48. Kc4 Nd2+ 49. Kc5 Re6 50. Rxc6 Nb3+ 51. Kd5 1-0

[Event "SJRP-ch U16"]
[Site "Germany"]
[Date "2002.04.04"]
[Round "4"]
[White "Siewert, Mathias"]
[Black "Nasshan, Dennis"]
[Result "0-1"]
[ECO "B43"]
[WhiteElo "1747"]
[BlackElo "1797"]
[PlyCount "62"]
[EventDate "2002.04.02"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 Qc7 6. Bd3 Nf6 7. 0-0 b5 8. Be3 Bb7 9. f3 Nc6 10. Nb3 Be7 11. Qe1 Rc8 12. Qf2 0-0 13. Bb6 Qb8 14. f4 Ba8 15. h3 d6 16. Rad1 Nd7 17. Be3 Nb4 18. Nd4 Nxd3 19. cxd3 Nc5 20. f5 b4 21. Nce2 e5 22. Nf3 Qb5 23. Ne1 d5 24. exd5 Bxd5 25. Qg3 f6 26. b3 Kh8 27. h4 Rg8 28. h5 Rcd8 29. Nc1 Bb7 30. Nf3 Bxf3 31. Rxf3 Nxd3 0-1

[Event "SJRP-ch U16"]
[Site "Germany"]
[Date "2002.04.03"]
[Round "2"]
[White "Lohr, Matthias"]
[Black "Siewert, Mathias"]
[Result "1-0"]
[ECO "E97"]
[WhiteElo "1781"]
[BlackElo "1747"]
[PlyCount "87"]
[EventDate "2002.04.02"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. d4 0-0 6. Be2 e5 7. 0-0 Nc6 8. d5 Ne7 9. Nd2 Nd7 10. b4 f5 11. Ba3 Nf6 12. f3 f4 13. c5 g5 14. Nc4 Ne8 15. b5 Rf7 16. b6 axb6 17. cxb6 c6 18. dxc6 Nxc6 19. Nb5 Bf8 20. Kh1 Be6 21. Qc2 Rc8 22. Rfd1 Na5 23. Nc7 Nxc4 24. Nxe6 Nxa3 25. Qb3 Qe7 26. Rac1 Nc2 27. Rxc2 Rxc2 28. Qxc2 Qxe6 29. Bc4 Qe7 30. a4 d5 31. Bxd5 Nd6 32. Qc7 Kg7 33. Bxf7 Qxf7 34. Rxd6 Bxd6 35. Qxd6 Qf6 36. Qc7+ Kg6 37. Qxb7 Qd6 38. h3 Qd1+ 39. Kh2 Qxa4 40. Qc8 Qd4 41. b7 Qf2 42. Qe6+ Kh5 43. Qg4+ Kh6 44. b8Q 1-0

[Event "SJRP-ch U16"]
[Site "Germany"]
[Date "2002.04.03"]
[Round "3"]
[White "Siewert, Mathias"]
[Black "Jacke, Benno"]
[Result "1/2-1/2"]
[ECO "B33"]
[WhiteElo "1747"]
[BlackElo "1675"]
[PlyCount "58"]
[EventDate "2002.04.02"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e5 5. Nb5 d6 6. N1c3 Nf6 7. Bg5 a6 8. Na3 b5 9. Bxf6 gxf6 10. Nd5 f5 11. Bd3 Be6 12. c3 Bg7 13. 0-0 0-0 14. Nc2 fxe4 15. Bxe4 f5 16. Nf4 exf4 17. Bxc6 Ra7 18. a4 bxa4 19. Rxa4 Be5 20. Nd4 Bc8 21. Bd5+ Kh8 22. Nc6 Qb6 23. Nxa7 Qxa7 24. Qd3 Qb6 25. b3 Qc5 26. Bc4 Bb7 27. Bxa6 Be4 28. Qd2 Rg8 29. Rxe4 fxe4 1/2-1/2

[Event "SJRP-ch U16"]
[Site "Germany"]
[Date "2002.04.02"]
[Round "1"]
[White "Siewert, Mathias"]
[Black "Martin, Mike"]
[Result "1-0"]
[ECO "C11"]
[WhiteElo "1747"]
[BlackElo "1655"]
[PlyCount "65"]
[EventDate "2002.04.02"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. f4 c5 6. Ne2 Nc6 7. Nf3 Qb6 8. c3 cxd4 9. cxd4 f6 10. g3 fxe5 11. fxe5 Bb4+ 12. Nc3 0-0 13. Bf4 a6 14. Bh3 Re8 15. 0-0 Bxc3 16. bxc3 Nf8 17. Qd3 Na5 18. Ng5 Ng6 19. Bg4 Nc6 20. Bh5 Nce7 21. Bc1 Bd7 22. Rb1 Qa5 23. Bg4 Bb5 24. Bxe6+ Kh8 25. Nf7+ Kg8 26. Nd6+ Kh8 27. Nxb5 axb5 28. a3 Qa7 29. Kg2 Rf8 30. Bf7 Nc6 31. Bxd5 Rxf1 32. Qxf1 Rf8 33. Qe2 1-0

[Event "GER-chT U16"]
[Site "Bensdorf"]
[Date "2001.12.30"]
[Round "7.4"]
[White "Siewert, Mathias"]
[Black "Gossmann, Gera"]
[Result "1-0"]
[ECO "C52"]
[WhiteElo "1588"]
[BlackElo "1622"]
[PlyCount "50"]
[EventDate "2001.12.??"]
[EventType "team"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. b4 Bxb4 5. c3 Ba5 6. d4 exd4 7. 0-0 dxc3 8. Qb3 Qf6 9. e5 Qg6 10. Nxc3 Bxc3 11. Qxc3 Nge7 12. Re1 0-0 13. Bd3 Qh5 14. Re4 Ng6 15. g4 Qh3 16. Bf1 d5 17. exd6 Qxg4+ 18. Rxg4 Bxg4 19. Bb2 f6 20. Qc4+ Kh8 21. Qxg4 cxd6 22. Bd3 Nce5 23. Nxe5 fxe5 24. Qh3 Rf6 25. Rc1 h6 1-0

[Event "GER-chT U16"]
[Site "Bensdorf"]
[Date "2001.12.29"]
[Round "6.4"]
[White "Becker, Nils"]
[Black "Siewert, Mathias"]
[Result "1-0"]
[ECO "B70"]
[WhiteElo "1560"]
[BlackElo "1588"]
[PlyCount "89"]
[EventDate "2001.12.??"]
[EventType "team"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be2 Bg7 7. 0-0 0-0 8. Nb3 Nc6 9. Bg5 Be6 10. Kh1 Qc8 11. f4 Rd8 12. Bd3 d5 13. exd5 Nxd5 14. Nxd5 Bxd5 15. Rb1 b6 16. Qe2 Re8 17. f5 Qd7 18. c4 Bxg2+ 19. Kxg2 Be5 20. Kh1 Qc7 21. Qf2 f6 22. fxg6 Red8 23. Be4 hxg6 24. Bf4 Bxf4 25. Qxf4 Ne5 26. Bxa8 Rxa8 27. Qg3 Qxc4 28. Rbc1 Qb4 29. Nd4 Qxb2 30. Qb3+ Qxb3 31. axb3 Rd8 32. Nc6 Nxc6 33. Rxc6 Rd7 34. Rfc1 Kf7 35. Rc7 Ke6 36. R1c6+ Rd6 37. Rxd6+ Kxd6 38. Rxa7 g5 39. Rb7 e6 40. Rxb6+ Ke5 41. Rc6 Kd5 42. Rc2 f5 43. b4 f4 44. b5 f3 45. Kg1 1-0

[Event "GER-chT U16"]
[Site "Bensdorf"]
[Date "2001.12.29"]
[Round "5.4"]
[White "Franz, Tobias"]
[Black "Siewert, Mathias"]
[Result "0-1"]
[ECO "B78"]
[WhiteElo "1635"]
[BlackElo "1588"]
[PlyCount "66"]
[EventDate "2001.12.??"]
[EventType "team"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. f3 Bg7 7. Be3 0-0 8. Bc4 Nc6 9. Qd2 Bd7 10. 0-0-0 Rc8 11. Bb3 Ne5 12. Kb1 Re8 13. Bh6 Bh8 14. h4 Qa5 15. h5 Rc5 16. hxg6 Nxg6 17. Be3 Rec8 18. Nf5 Rxc3 19. Nh6+ Kf8 20. bxc3 Be6 21. Bd4 Rc4 22. g3 Rc7 23. Ng4 Bxg4 24. fxg4 Ke8 25. Qf2 e5 26. g5 Nxe4 27. Qe3 d5 28. Rde1 exd4 29. cxd4 Re7 30. Qg1 Qc3 31. Rd1 Nd2+ 32. Kc1 Nf3 33. Qg2 Qa1# 0-1

[Event "GER-chT U16"]
[Site "Bensdorf"]
[Date "2001.12.28"]
[Round "3.4"]
[White "Cordes, Till"]
[Black "Siewert, Mathias"]
[Result "0-1"]
[ECO "B78"]
[WhiteElo "1626"]
[BlackElo "1588"]
[PlyCount "72"]
[EventDate "2001.12.??"]
[EventType "team"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 0-0 8. Qd2 Nc6 9. Bc4 Bd7 10. 0-0-0 Rc8 11. Nxc6 Rxc6 12. Bb3 Qa5 13. g4 Rfc8 14. Bd4 e5 15. Be3 Bxg4 16. fxg4 Rxc3 17. bxc3 Nxe4 18. Qg2 Qa3+ 19. Kb1 Nxc3+ 20. Ka1 Rc6 21. Bc1 Qb4 22. Rdf1 Ra6 23. Rxf7 d5 24. Rhf1 Qa5 25. a3 Qb4 26. Rxg7+ Kxg7 27. Bh6+ Kxh6 28. Kb2 Rxa3 29. Qd2+ Kg7 30. Qf2 Ra2+ 31. Kc1 Qa3+ 32. Kd2 Ne4+ 33. Ke2 Nxf2 34. Bxa2 Qxa2 35. Rxf2 Qxc2+ 36. Kf1 Qd1+ 0-1

[Event "GER-chT U16"]
[Site "Bensdorf"]
[Date "2001.01.01"]
[Round "1.4"]
[White "Siewert, Mathias"]
[Black "Tambolas, Goran"]
[Result "1-0"]
[ECO "C42"]
[WhiteElo "1588"]
[BlackElo "1266"]
[PlyCount "67"]
[EventDate "2001.12.??"]
[EventType "team"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Nc6 7. 0-0 Be7 8. c3 Nf6 9. Bf4 0-0 10. Qc2 g6 11. Nbd2 Bd6 12. Ne5 Bxe5 13. dxe5 Nd7 14. Bh6 Re8 15. f4 Nc5 16. Bg5 Qd7 17. Bf6 Qe6 18. Rae1 Nxd3 19. Qxd3 Ne7 20. h3 Qf5 21. Qe3 Be6 22. a3 h5 23. Nb3 Nc6 24. Rf3 Qe4 25. Qd2 Qf5 26. Rg3 Bd7 27. Rg5 Qe6 28. Nc5 Qf5 29. Rxf5 Bxf5 30. g4 hxg4 31. hxg4 Bxg4 32. f5 Ne7 33. Qh6 Nxf5 34. Qh8# 1-0

[Event "GER-chT U16"]
[Site "Bensdorf"]
[Date "2001.??.??"]
[Round "2.4"]
[White "Nass, Walter Robert"]
[Black "Siewert, Mathias"]
[Result "0-1"]
[ECO "B78"]
[WhiteElo "1646"]
[BlackElo "1588"]
[PlyCount "70"]
[EventDate "2001.12.??"]
[EventType "team"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. f3 Bg7 7. Be3 0-0 8. Bc4 Nc6 9. Qd2 Bd7 10. 0-0-0 Rc8 11. Bb3 Ne5 12. Bh6 Nc4 13. Bxc4 Rxc4 14. Bxg7 Kxg7 15. h4 h5 16. g4 hxg4 17. h5 Rh8 18. hxg6 fxg6 19. e5 dxe5 20. Ne6+ Bxe6 21. Qxd8 Rxd8 22. Rxd8 gxf3 23. Rb8 Nd5 24. Rxb7 Nxc3 25. bxc3 Ra4 26. Rxe7+ Kf6 27. Re8 e4 28. Rf8+ Ke5 29. Kd2 Rxa2 30. Rb1 Bf5 31. Rb5+ Kf4 32. Rb4 f2 33. Rb1 e3+ 34. Ke2 Rxc2+ 35. Kf1 Kf3 0-1

[Event "GER-chT U16"]
[Site "Bensdorf"]
[Date "2000.01.01"]
[Round "4.4"]
[White "Siewert, Mathias"]
[Black "Baldauf, Manuel"]
[Result "0-1"]
[ECO "B43"]
[WhiteElo "1588"]
[BlackElo "1535"]
[PlyCount "131"]
[EventDate "2001.12.??"]
[EventType "team"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Qb6 5. Nb3 Qc7 6. Nc3 a6 7. Bd3 b5 8. a3 Nf6 9. 0-0 d6 10. f4 Nbd7 11. Be3 Bb7 12. Qe2 Be7 13. Kh1 0-0 14. Rac1 Rac8 15. Nd2 Nc5 16. h3 d5 17. Bg1 Rfd8 18. e5 Nfd7 19. Be3 Nb6 20. Bxc5 Bxc5 21. f5 Nc4 22. Bxc4 bxc4 23. f6 g6 24. Nf3 Bc6 25. Qd2 Qb6 26. Qh6 Bf8 27. Qh4 h6 28. Rb1 Rb8 29. Ne2 Rdc8 30. c3 Ba4 31. Ned4 Rb7 32. Nh2 Rcb8 33. Qf4 Qc7 34. Rf2 Bb3 35. Re1 Ba2 36. Qc1 Qb6 37. Ng4 Kh7 38. g3 Bb3 39. Kg2 Ba4 40. Ree2 Bb3 41. Rf4 Ba4 42. Nf2 Qd8 43. Rh4 Rb6 44. Ng4 h5 45. Nf3 R8b7 46. Qb1 Kg8 47. Rxh5 Qb8 48. Qc1 Rxb2 49. Rxb2 Rxb2+ 50. Nf2 gxh5 51. Qg5+ Kh8 52. Qxh5+ Kg8 53. Ng5 Rxf2+ 54. Kxf2 Qb2+ 55. Qe2 Qxe2+ 56. Kxe2 Bxa3 57. Nf3 Bc5 58. g4 a5 59. Kd2 Kh7 60. h4 Bf2 61. Ke2 Bg3 62. Kd2 Bb3 63. Kc1 Bf4+ 64. Kb2 Bd1 65. Ne1 Bxe5 66. g5 0-1

[Event "GER-ch U12"]
[Site "Oberhof"]
[Date "1999.??.??"]
[Round "?"]
[White "Brehmer, Johann Hinrich"]
[Black "Siewert, Mathias"]
[Result "0-1"]
[ECO "D35"]
[PlyCount "78"]
[EventDate "1999.??.??"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Nbd7 5. e3 c6 6. Nf3 Bd6 7. Bd3 0-0 8. 0-0 b6 9. cxd5 exd5 10. Re1 Qc7 11. Qc2 h6 12. Bxf6 Nxf6 13. h3 g6 14. Rac1 Bd7 15. Nb5 Qb8 16. Nxd6 Qxd6 17. Re2 Rae8 18. Nd2 Kh8 19. Rce1 Rg8 20. Qa4 a5 21. Qb3 b5 22. Nb1 g5 23. Qa3 Qc7 24. Rc1 g4 25. h4 g3 26. f3 a4 27. Bxb5 Nh5 28. Qxa4 Nf4 29. Ree1 Nxg2 30. Kxg2 Bh3+ 31. Kg1 Qd7 32. Rxc6 Qf5 33. Rc2 Qxf3 34. Rce2 Rxe3 35. Qd1 g2 36. Nd2 Qf1+ 37. Nxf1 gxf1Q+ 38. Kh2 Rg2+ 39. Rxg2 Qxg2# 0-1

[Event "GER-ch U12"]
[Site "Oberhof"]
[Date "1999.??.??"]
[Round "?"]
[White "Butschek, Tanja"]
[Black "Siewert, Mathias"]
[Result "0-1"]
[ECO "D53"]
[PlyCount "64"]
[EventDate "1999.??.??"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Nbd7 5. Nf3 c6 6. e3 Be7 7. Bd3 h6 8. Bh4 b6 9. cxd5 exd5 10. e4 dxe4 11. Bxf6 Nxf6 12. Nxe4 0-0 13. 0-0 Bg4 14. Nxf6+ Bxf6 15. Be4 Rc8 16. Qc2 Bxf3 17. Bxf3 Bxd4 18. Bxc6 Bxb2 19. Rad1 Qf6 20. Rb1 Be5 21. Rfc1 Bf4 22. Rd1 Rxc6 23. Qe4 Rfc8 24. Rd4 Rc1+ 25. Rd1 Rxb1 26. Qxb1 Rd8 27. Re1 g6 28. g3 Be5 29. f4 Bd4+ 30. Kf1 Qc6 31. Rd1 Qf3+ 32. Ke1 Qf2# 0-1

[Event "GER-ch U12"]
[Site "Oberhof"]
[Date "1999.??.??"]
[Round "?"]
[White "Christiansen, Claes"]
[Black "Siewert, Mathias"]
[Result "1-0"]
[ECO "A13"]
[PlyCount "60"]
[EventDate "1999.??.??"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. c4 Nf6 2. Nf3 e6 3. g3 d5 4. cxd5 exd5 5. Bg2 c6 6. e3 Be6 7. 0-0 Bd6 8. Nc3 0-0 9. d4 Nbd7 10. Ng5 Qe7 11. Nxe6 Qxe6 12. Re1 Rfe8 13. f3 Bb4 14. Qb3 Bxc3 15. bxc3 b6 16. Ba3 g6 17. e4 Kg7 18. exd5 Qxe1+ 19. Rxe1 Rxe1+ 20. Kf2 Rae8 21. Bf1 Nxd5 22. c4 N5f6 23. Bb4 Ra1 24. Bc3 Rc1 25. Qb2 Rd1 26. Qc2 Rxf1+ 27. Kxf1 h5 28. a4 Re3 29. Ba1 Rxf3+ 30. Ke2 Rf5 1-0

[Event "GER-ch U12"]
[Site "Oberhof"]
[Date "1999.??.??"]
[Round "?"]
[White "Reiske, Anne"]
[Black "Siewert, Mathias"]
[Result "1-0"]
[ECO "D45"]
[PlyCount "65"]
[EventDate "1999.??.??"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 c6 5. e3 Nbd7 6. c5 b6 7. b4 a5 8. Qa4 Bb7 9. Be2 Qc7 10. Rb1 Be7 11. 0-0 0-0 12. bxa5 bxc5 13. a6 cxd4 14. Rxb7 Qc8 15. exd4 c5 16. Qb3 cxd4 17. Nxd4 Nc5 18. Qb2 Nxb7 19. axb7 Qe8 20. bxa8Q Qxa8 21. Bf4 Nd7 22. Qb5 Qc8 23. Rc1 Qe8 24. Bg3 Qc8 25. Qb1 Qa8 26. Rf1 Bf6 27. Ndb5 d4 28. Ne4 Be7 29. h4 e5 30. Bf3 Rb8 31. Ng5 Qa6 32. Qxh7+ Kf8 33. Qh8# 1-0

[Event "GER-ch U12"]
[Site "Oberhof"]
[Date "1999.??.??"]
[Round "?"]
[White "Schulenburg, Fabian"]
[Black "Siewert, Mathias"]
[Result "1/2-1/2"]
[ECO "C66"]
[PlyCount "96"]
[EventDate "1999.??.??"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 d6 4. 0-0 Bd7 5. c3 Nf6 6. Re1 Ne7 7. Bxd7+ Qxd7 8. d4 exd4 9. cxd4 0-0-0 10. Bf4 Ng6 11. Bg3 Be7 12. Nbd2 h6 13. Rc1 Nh5 14. Nf1 Ngf4 15. Rc3 Kb8 16. Qc2 Rc8 17. Rb1 g5 18. b4 g4 19. Nh4 Ng6 20. Nxg6 fxg6 21. a4 c6 22. e5 Qe6 23. Re3 Nxg3 24. Nxg3 h5 25. Ne2 Rcf8 26. g3 Rf7 27. Nf4 Qf5 28. Qxf5 gxf5 29. Reb3 Rd8 30. b5 cxb5 31. Rxb5 Bg5 32. Ne6 Rg8 33. Nxg5 Rxg5 34. e6 Re7 35. d5 Rg8 36. Rc1 Rf8 37. a5 Rc8 38. Rxc8+ Kxc8 39. Rb4 Re8 40. Rc4+ Kd8 41. a6 bxa6 42. Ra4 Ke7 43. Rxa6 Ra8 44. Kf1 Kf6 45. Rxd6 a5 46. Rd7 a4 47. e7 Re8 48. Ra7 Rxe7 1/2-1/2

[Event "GER-ch U12"]
[Site "Oberhof"]
[Date "1999.??.??"]
[Round "?"]
[White "Siewert, Mathias"]
[Black "Grote, Steffi"]
[Result "0-1"]
[ECO "D35"]
[PlyCount "60"]
[EventDate "1999.??.??"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bf4 c5 5. e3 Nc6 6. Nf3 Bd6 7. Ne5 0-0 8. Nxc6 bxc6 9. Bg3 Bxg3 10. hxg3 Qb6 11. Qd2 Rb8 12. b3 Qa5 13. Bd3 Rxb3 14. Rc1 Rb8 15. Qc2 g6 16. Ke2 Ba6 17. cxd5 Bxd3+ 18. Qxd3 cxd4 19. Qxd4 Nxd5 20. Ne4 Qxa2+ 21. Kf3 f6 22. Rh6 Rf7 23. Rch1 Rb2 24. g4 f5 25. Ng5 Rxf2+ 26. Kg3 Rxg2+ 27. Kh3 Qf2 28. Qe5 f4 29. Ne4 Qf3+ 30. Kh4 Qxg4# 0-1

[Event "GER-ch U12"]
[Site "Oberhof"]
[Date "1999.??.??"]
[Round "?"]
[White "Siewert, Mathias"]
[Black "Kraemer, Martin"]
[Result "0-1"]
[ECO "B30"]
[BlackElo "1670"]
[PlyCount "60"]
[EventDate "1999.??.??"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. Nc3 g6 4. Bc4 Bg7 5. 0-0 d6 6. Re1 e6 7. d3 Nge7 8. Be3 0-0 9. Qd2 d5 10. exd5 exd5 11. Bb5 d4 12. Bg5 dxc3 13. bxc3 Qc7 14. Re2 Nd5 15. d4 Bg4 16. Bxc6 Qxc6 17. Ne5 Bxe5 18. Rxe5 f6 19. Bxf6 Nxf6 20. Rxc5 Qd6 21. h3 Bf5 22. Rb5 b6 23. Rc1 Rac8 24. Qg5 Ne4 25. Qe3 Rxc3 26. Qe2 Qxd4 27. Rb3 Rxb3 28. axb3 Qd2 29. Qxd2 Nxd2 30. Rd1 Rd8 0-1

[Event "GER-ch U12"]
[Site "Oberhof"]
[Date "1999.??.??"]
[Round "?"]
[White "Siewert, Mathias"]
[Black "Neldner, Uta"]
[Result "1-0"]
[ECO "A84"]
[PlyCount "53"]
[EventDate "1999.??.??"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. d4 f5 2. c4 Nf6 3. Nc3 e6 4. Bf4 d5 5. e3 c6 6. Nf3 Be7 7. c5 0-0 8. Bd3 h6 9. 0-0 Nbd7 10. Qc2 Ne4 11. Ne5 Nxe5 12. Bxe5 Bf6 13. Bf4 g5 14. Bg3 Qe8 15. Qe2 Be7 16. Bc2 Qf7 17. Nxe4 fxe4 18. f4 exf3 19. Rxf3 Qg7 20. Be5 Bf6 21. Raf1 Bxe5 22. Rxf8+ Qxf8 23. Rxf8+ Kxf8 24. dxe5 Bd7 25. Qf3+ Ke7 26. Qf6+ Ke8 27. Bg6# 1-0

[Event "GER-ch U12"]
[Site "Oberhof"]
[Date "1999.??.??"]
[Round "?"]
[White "Siewert, Mathias"]
[Black "Romakin, Helene"]
[Result "0-1"]
[ECO "C02"]
[PlyCount "104"]
[EventDate "1999.??.??"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 f6 6. Bb5 Bd7 7. Bxc6 Bxc6 8. Bf4 fxe5 9. Nxe5 Nf6 10. 0-0 Bd6 11. Re1 Bd7 12. Nf7 Kxf7 13. Bxd6 cxd4 14. cxd4 Bc6 15. Be5 Rf8 16. Nd2 Kg8 17. Nf3 Qd7 18. Qc2 Ne4 19. Re3 Rf7 20. b3 Qe7 21. a4 Raf8 22. Rf1 Rf5 23. Re2 R5f7 24. h3 Qd7 25. Bh2 Rf6 26. Ne5 Qe8 27. f3 Ng5 28. Ng4 Rg6 29. f4 Ne4 30. Rf3 Nd6 31. f5 Nxf5 32. Rxf5 Rxf5 33. Ne5 Rgf6 34. Re1 Rf2 35. Qd1 R2f5 36. g4 Rf2 37. Bg3 Ra2 38. Qb1 Ra3 39. Qb2 Qe7 40. Nxc6 bxc6 41. Bh4 Qd6 42. Re3 Rg6 43. Rc3 e5 44. Bg3 Qb4 45. Be1 e4 46. Re3 Qf8 47. Rc3 Rf6 48. Bg3 Rf1+ 49. Kg2 Raa1 50. Bf2 Rab1 51. Qa2 Rh1 52. Rxc6 Qf3# 0-1

[Event "GER-ch U12"]
[Site "Oberhof"]
[Date "1999.??.??"]
[Round "?"]
[White "Siewert, Mathias"]
[Black "Skibbe, Willi"]
[Result "1-0"]
[ECO "D02"]
[PlyCount "150"]
[EventDate "1999.??.??"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. Bf4 Bf5 5. Nf3 e6 6. e3 Bb4 7. a3 Bxc3+ 8. bxc3 Ne4 9. Qb3 Qb6 10. Qb4 Qxb4 11. cxb4 dxc4 12. Bxc4 Nc3 13. 0-0 Nd5 14. Rfe1 Nxf4 15. exf4 Nd7 16. d5 Nb6 17. Nd2 Nxd5 18. Bxd5 cxd5 19. Rac1 0-0 20. Nf3 Rfc8 21. Ne5 Bg6 22. b5 b6 23. Nc6 Kf8 24. g3 Bd3 25. a4 Bc4 26. Rc3 a6 27. Nd4 axb5 28. axb5 Ra5 29. Rb1 Rc5 30. Rbc1 Bxb5 31. Rxc5 bxc5 32. Rxc5 Ra1+ 33. Kg2 Bc4 34. Rc8+ Ke7 35. Rh8 Bd3 36. Rg8 g6 37. Rg7 h5 38. Nc6+ Kf8 39. Rh7 Kg8 40. Rxf7 Be4+ 41. f3 Bxf3+ 42. Kxf3 Kxf7 43. Ne5+ Kg7 44. h4 Ra3+ 45. Kf2 Ra4 46. Ke3 Re4+ 47. Kd3 Kf6 48. Nd7+ Ke7 49. Nc5 Rc4 50. Nb3 Rb4 51. Nd4 Rxd4+ 52. Kxd4 Kd6 53. Kc3 Kc5 54. Kd3 d4 55. Kd2 Kc4 56. Kc2 d3+ 57. Kd2 Kd4 58. Kd1 Ke3 59. Ke1 d2+ 60. Kd1 Kf3 61. Kxd2 Kxg3 62. f5 exf5 63. Ke2 Kxh4 64. Kf3 g5 65. Kf2 g4 66. Kg2 Kg5 67. Kg3 f4+ 68. Kg2 h4 69. Kh2 f3 70. Kg1 Kf4 71. Kh2 Ke3 72. Kg1 g3 73. Kf1 g2+ 74. Kg1 f2+ 75. Kh2 g1Q+ 1-0

[Event "GER-ch U12"]
[Site "Oberhof"]
[Date "1999.??.??"]
[Round "?"]
[White "Siewert, Mathias"]
[Black "Wolk, Friederike"]
[Result "0-1"]
[ECO "D10"]
[PlyCount "56"]
[EventDate "1999.??.??"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nc3 dxc4 4. e4 b5 5. a4 b4 6. Na2 b3 7. Nc3 Ba6 8. Nf3 e6 9. Ne5 c5 10. d5 exd5 11. Nxd5 Ne7 12. Qf3 Qc8 13. Nxf7 Nxd5 14. Nxh8 Qe6 15. g3 Nf6 16. Bg2 Bb7 17. 0-0 Nbd7 18. Re1 Be7 19. Qf5 Qxf5 20. exf5 Bxg2 21. Kxg2 Kf8 22. Bg5 Re8 23. Rad1 Kg8 24. Rxd7 Nxd7 25. Rxe7 Rxe7 26. Bxe7 Kxh8 27. h4 c3 28. Bg5 cxb2 0-1

