[Event "URU-ch qual 18th"]
[Site "Paysandu"]
[Date "2005.02.08"]
[Round "7"]
[White "Barrere, Claudio"]
[Black "Silveira, Matias"]
[Result "0-1"]
[ECO "D89"]
[PlyCount "86"]
[EventDate "2005.02.05"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "URU"]
[SourceTitle "CBM 104 Extra"]
[Source "ChessBase"]
[SourceDate "2005.03.01"]
[SourceVersion "1"]
[SourceVersionDate "2005.03.01"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Bc4 0-0 8. Ne2 c5 9. 0-0 Nc6 10. Be3 Bg4 11. f3 Na5 12. Bd3 cxd4 13. cxd4 Be6 14. Qa4 a6 15. Rac1 b5 16. Qc2 Nc4 17. Bxc4 Bxc4 18. Rfd1 Rc8 19. Kf2 Qa5 20. Rd2 h6 21. Qc3 b4 22. Qb2 Qb5 23. Rdc2 a5 24. Nf4 Qa6 25. Rxc4 Rxc4 26. Qe2 Rfc8 27. Nd5 Kf8 28. Nb6 Qxb6 29. Rxc4 Rxc4 30. Qxc4 Qb7 31. Ke2 Ke8 32. Kd3 e6 33. d5 exd5 34. exd5 Qd7 35. Qc6 Qxc6 36. dxc6 a4 37. Kc4 b3 38. axb3 a3 39. Kb5 a2 40. Kb6 a1Q 41. Kb7 Bd4 42. c7 Qa7+ 43. Kc6 Qa8+ 0-1

[Event "URU-ch qual 18th"]
[Site "Paysandu"]
[Date "2005.02.07"]
[Round "5"]
[White "Marquez, Luis"]
[Black "Silveira, Matias"]
[Result "0-1"]
[ECO "C50"]
[PlyCount "98"]
[EventDate "2005.02.05"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "URU"]
[SourceTitle "CBM 104 Extra"]
[Source "ChessBase"]
[SourceDate "2005.03.01"]
[SourceVersion "1"]
[SourceVersionDate "2005.03.01"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. 0-0 d6 5. d4 Nxd4 6. Nc3 Bg4 7. Be2 Nxe2+ 8. Qxe2 c6 9. Be3 Bb4 10. h3 Bh5 11. g4 Bg6 12. Rad1 Bxc3 13. bxc3 Bxe4 14. Nd2 Bxc2 15. Rc1 Bg6 16. f4 Qh4 17. Qg2 Bd3 18. Bf2 Bxf1 19. Rxf1 Qe7 20. Re1 Nf6 21. Nc4 Nd7 22. Ne3 0-0 23. g5 f5 24. h4 Nc5 25. Qf1 e4 26. Nc4 Nd7 27. Qh3 Qe6 28. Ne3 Nc5 29. Re2 Nd3 30. Qh2 d5 31. Bg3 c5 32. h5 d4 33. Ng2 Rac8 34. Bh4 Nc1 35. Rc2 Nxa2 36. g6 d3 37. Rd2 Nxc3 38. Bg5 h6 39. Nh4 c4 40. Bxh6 gxh6 41. g7 Rf7 42. Rg2 Rxg7 43. Rg6 Rxg6+ 44. Nxg6 Kh7 45. Qg2 Rg8 46. Kf1 Nd5 47. Qb2 b6 48. Qb5 d2 49. Ke2 Nc3+ 0-1

[Event "URU-ch qual 18th"]
[Site "Paysandu"]
[Date "2005.02.07"]
[Round "6"]
[White "Silveira, Matias"]
[Black "Nunez, Matias"]
[Result "1-0"]
[ECO "B80"]
[PlyCount "53"]
[EventDate "2005.02.05"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "URU"]
[SourceTitle "CBM 104 Extra"]
[Source "ChessBase"]
[SourceDate "2005.03.01"]
[SourceVersion "1"]
[SourceVersionDate "2005.03.01"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. f3 e6 7. Be3 Be7 8. g4 b5 9. g5 Nfd7 10. h4 Bb7 11. Bh3 Nc6 12. Nce2 Nde5 13. Nxc6 Bxc6 14. Nd4 Qc8 15. Qe2 d5 16. f4 Nc4 17. Nxc6 Qxc6 18. exd5 exd5 19. Bd4 0-0 20. 0-0-0 Bd6 21. Qf3 b4 22. Bf5 Rab8 23. Rhf1 Bc5 24. Be5 Be3+ 25. Kb1 Rbe8 26. Bf6 gxf6 27. Qh5 1-0

[Event "URU-ch qual 18th"]
[Site "Paysandu"]
[Date "2005.02.06"]
[Round "3"]
[White "Idiarte Borda, Jorge"]
[Black "Silveira, Matias"]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "2157"]
[PlyCount "165"]
[EventDate "2005.02.05"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "URU"]
[SourceTitle "CBM 104 Extra"]
[Source "ChessBase"]
[SourceDate "2005.03.01"]
[SourceVersion "1"]
[SourceVersionDate "2005.03.01"]
[SourceQuality "1"]

1. Nf3 Nf6 2. d4 g6 3. g3 Bg7 4. Bg2 c6 5. 0-0 0-0 6. b3 d5 7. Bb2 Nbd7 8. Nbd2 Ne4 9. Nxe4 dxe4 10. Ng5 e3 11. fxe3 Bh6 12. h4 Qc7 13. d5 Qxg3 14. Qd4 f6 15. Rf3 c5 16. Rxg3 cxd4 17. Ne6 Bxe3+ 18. Rxe3 dxe3 19. Nxf8 Nxf8 20. Bd4 Bg4 21. Kf1 Rc8 22. c4 b6 23. Bxe3 Nd7 24. Bd4 Kf7 25. Kf2 e5 26. dxe6+ Bxe6 27. Bf3 Ne5 28. Bxe5 fxe5 29. Rd1 Ke7 30. Kg3 a5 31. Bg4 h6 32. Bxe6 Kxe6 33. Rd5 a4 34. Rb5 Rc6 35. Kf3 axb3 36. axb3 Kf6 37. Ke4 Re6 38. b4 g5 39. hxg5+ hxg5 40. c5 bxc5 41. bxc5 g4 42. Rb6 g3 43. Kf3 g2 44. Kxg2 Ke7 45. Kf3 e4+ 46. Ke3 Re5 47. Kd4 Rh5 48. e3 Kd7 49. Rd6+ Kc7 50. Re6 Rh1 51. Rxe4 Rd1+ 52. Kc4 Rc1+ 53. Kd5 Rd1+ 54. Rd4 Rh1 55. e4 Rh5+ 56. e5 Kd7 57. Ra4 Rh1 58. Ra7+ Kd8 59. c6 Rd1+ 60. Ke6 Rc1 61. Rd7+ Kc8 62. Kd6 Rd1+ 63. Ke7 Re1 64. e6 Rc1 65. c7 Rc6 66. Kf7 Rc1 67. Ke8 Rc6 68. Re7 Rc1 69. Kf8 Rc6 70. Kf7 Rc1 71. Rd7 Re1 72. Rd4 Kxc7 73. e7 Rf1+ 74. Ke8 Rf2 75. Rd7+ Kc8 76. Ra7 Rf1 77. Ra8+ Kc7 78. Ra6 Rf3 79. Ra4 Rf1 80. Rd4 Rf3 81. Rh4 Rf1 82. Rh7 Rg1 83. Kf8 1-0

[Event "URU-ch qual 18th"]
[Site "Paysandu"]
[Date "2005.02.06"]
[Round "4"]
[White "Silveira, Matias"]
[Black "Socias, Victor"]
[Result "1/2-1/2"]
[ECO "B33"]
[PlyCount "23"]
[EventDate "2005.02.05"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "URU"]
[SourceTitle "CBM 104 Extra"]
[Source "ChessBase"]
[SourceDate "2005.03.01"]
[SourceVersion "1"]
[SourceVersionDate "2005.03.01"]
[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 Qa5+ 10. Bd2 Qd8 11. Bg5 Qa5+ 12. Bd2 1/2-1/2

[Event "URU-ch qual 18th"]
[Site "Paysandu"]
[Date "2005.02.05"]
[Round "1"]
[White "Larrea, Manuel"]
[Black "Silveira, Matias"]
[Result "1-0"]
[ECO "B99"]
[WhiteElo "2278"]
[PlyCount "43"]
[EventDate "2005.02.05"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "URU"]
[SourceTitle "CBM 104 Extra"]
[Source "ChessBase"]
[SourceDate "2005.03.01"]
[SourceVersion "1"]
[SourceVersionDate "2005.03.01"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 Nbd7 9. 0-0-0 Qc7 10. g4 b5 11. Bxf6 Nxf6 12. g5 Nd7 13. f5 Bxg5+ 14. Kb1 Nf6 15. Rg1 Bh6 16. fxe6 fxe6 17. e5 Bb7 18. Nxe6 Qf7 19. Qf5 Bc8 20. Rxd6 Ke7 21. exf6+ gxf6 22. Qc5 1-0

[Event "URU-ch qual 18th"]
[Site "Paysandu"]
[Date "2005.02.05"]
[Round "2"]
[White "Silveira, Matias"]
[Black "Izquierdo, Sebastian"]
[Result "1-0"]
[ECO "B76"]
[PlyCount "55"]
[EventDate "2005.02.05"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "URU"]
[SourceTitle "CBM 104 Extra"]
[Source "ChessBase"]
[SourceDate "2005.03.01"]
[SourceVersion "1"]
[SourceVersionDate "2005.03.01"]
[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 Bd7 10. g4 Rc8 11. h4 h5 12. Nd5 Nxd5 13. exd5 Nxd4 14. Bxd4 Bxd4 15. Qxd4 Qb6 16. Qf4 Qf2 17. Bd3 Bb5 18. Rh2 Qc5 19. Bxb5 Qxb5 20. gxh5 Kh7 21. Rg2 Qc4 22. Qg5 Rg8 23. hxg6+ Rxg6 24. Qf5 Kg7 25. Rxg6+ fxg6 26. Rg1 Kh8 27. Qxg6 Qf4+ 28. Kb1 1-0

[Event "URU-ch U20"]
[Site "Paysandu"]
[Date "2004.07.25"]
[Round "5"]
[White "Silveira, Matias"]
[Black "Barrere, Claudio"]
[Result "1-0"]
[ECO "C50"]
[PlyCount "97"]
[EventDate "2004.07.24"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "URU"]
[SourceTitle "CBM 101 Extra"]
[Source "ChessBase"]
[SourceDate "2004.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2004.09.01"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d4 exd4 5. 0-0 h6 6. Nxd4 Nxd4 7. Qxd4 d6 8. e5 dxe5 9. Bxf7+ Ke7 10. Qc4 Qd6 11. Nc3 Be6 12. Bxe6 Qxe6 13. Qxc7+ Nd7 14. Re1 Qc6 15. Rxe5+ Kf7 16. Qxc6 bxc6 17. Re4 Nb6 18. Be3 Be7 19. Bxb6 axb6 20. Rae1 Bf6 21. a4 Rhd8 22. Nd1 Rd2 23. Rc4 c5 24. b3 Be5 25. g3 Bd4 26. Ne3 Re8 27. c3 Bxe3 28. Rxe3 Rxe3 29. fxe3 Re2 30. a5 bxa5 31. Rxc5 Rxe3 32. Kf2 Re6 33. Rxa5 g6 34. c4 Ke7 35. Rb5 Kd7 36. c5 g5 37. Rb6 Re5 38. b4 h5 39. h3 g4 40. hxg4 hxg4 41. Rg6 Re4 42. b5 Rc4 43. c6+ Kc7 44. Rg7+ Kb6 45. Rb7+ Ka5 46. c7 Rc3 47. b6 Ka6 48. Rb8 Rc4 49. c8Q+ 1-0

[Event "URU-ch U20"]
[Site "Paysandu"]
[Date "2004.07.25"]
[Round "4"]
[White "Ulaneo, Nicolas"]
[Black "Silveira, Matias"]
[Result "1-0"]
[ECO "C45"]
[PlyCount "113"]
[EventDate "2004.07.24"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "URU"]
[SourceTitle "CBM 101 Extra"]
[Source "ChessBase"]
[SourceDate "2004.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2004.09.01"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Bc5 5. Nb3 Bb6 6. Nc3 Nge7 7. Bg5 h6 8. Bh4 Ne5 9. Be2 c6 10. 0-0 0-0 11. Na4 Bc7 12. c4 N5g6 13. Bg3 Bxg3 14. hxg3 d6 15. Nc3 Qc7 16. f4 f5 17. Bf3 fxe4 18. Bxe4 Bf5 19. Qd3 Rad8 20. Nd4 Qb6 21. Rf2 Qc5 22. Bxf5 Nxf5 23. Ne6 Qb6 24. Nxd8 Qxd8 25. Rd1 Qb6 26. Re1 h5 27. Re6 h4 28. Rxg6 hxg3 29. Rxg3 Nxg3 30. Qxg3 Qd4 31. b3 Re8 32. f5 Re3 33. Qf4 Qxc3 34. Kh2 Qe5 35. Qxe5 Rxe5 36. Kg3 Kf7 37. Kf4 Kf6 38. g4 Kf7 39. Rd2 Ke7 40. Rh2 Re1 41. Kg5 Kf7 42. Rd2 Ke7 43. Kg6 Rg1 44. g5 Rg3 45. Re2+ Kd7 46. Rh2 Ke7 47. Rh7 Kf8 48. Rh8+ Ke7 49. Rg8 d5 50. Rxg7+ Kf8 51. Rxb7 d4 52. f6 Ke8 53. f7+ Kf8 54. Rb8+ Ke7 55. f8Q+ Ke6 56. Re8+ Kd7 57. Qe7# 1-0

[Event "URU-ch U20"]
[Site "Paysandu"]
[Date "2004.07.24"]
[Round "2"]
[White "Brum, Marcelo"]
[Black "Silveira, Matias"]
[Result "0-1"]
[ECO "C54"]
[PlyCount "54"]
[EventDate "2004.07.24"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "URU"]
[SourceTitle "CBM 101 Extra"]
[Source "ChessBase"]
[SourceDate "2004.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2004.09.01"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. cxd4 Bb4+ 7. Kf1 Nxe4 8. Qe2 d5 9. Bg5 Be7 10. Bxe7 Nxe7 11. Bd3 Nf6 12. Nc3 0-0 13. Re1 Re8 14. Qd2 Bf5 15. Ne5 Bxd3+ 16. Qxd3 c6 17. Ne2 Nd7 18. Nf4 Nxe5 19. dxe5 Qc7 20. Qg3 Nf5 21. Qg5 Rxe5 22. Rxe5 Qxe5 23. Nd3 Qe4 24. Nc5 Qc4+ 25. Ke1 Re8+ 26. Kd2 Re2+ 27. Kd1 Qc2# 0-1

[Event "URU-ch U20"]
[Site "Paysandu"]
[Date "2004.07.24"]
[Round "1"]
[White "Silveira, Matias"]
[Black "Deorta, Victor"]
[Result "1-0"]
[ECO "C56"]
[PlyCount "17"]
[EventDate "2004.07.24"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "URU"]
[SourceTitle "CBM 101 Extra"]
[Source "ChessBase"]
[SourceDate "2004.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2004.09.01"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Bc4 Nc6 4. d4 exd4 5. 0-0 d6 6. Nxd4 Ne5 7. Bb3 Nxe4 8. Re1 d5 9. f3 1-0

[Event "URU-ch U20"]
[Site "Paysandu"]
[Date "2004.07.24"]
[Round "3"]
[White "Silveira, Matias"]
[Black "Tregarthen, Emiliano"]
[Result "1/2-1/2"]
[ECO "B76"]
[PlyCount "109"]
[EventDate "2004.07.24"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "URU"]
[SourceTitle "CBM 101 Extra"]
[Source "ChessBase"]
[SourceDate "2004.09.01"]
[SourceVersion "2"]
[SourceVersionDate "2004.09.01"]
[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. Nxc6 bxc6 11. exd5 cxd5 12. Nxd5 Nxd5 13. Qxd5 Qc7 14. Qc5 Qb7 15. Bd4 Bf5 16. c3 Rfc8 17. Qa3 Bh6+ 18. Rd2 Rab8 19. b3 Qd7 20. Qxa7 Bxd2+ 21. Kxd2 Qxa7 22. Bxa7 Ra8 23. Bd4 Rxa2+ 24. Ke3 Be6 25. b4 Ra1 26. g3 Bc4 27. Bg2 Ra2 28. Rg1 Re2+ 29. Kf4 f6 30. Bc5 g5+ 31. Kg4 Be6+ 32. Kh5 Bf7+ 33. Kg4 h5+ 34. Kh3 f5 35. f4 g4+ 36. Kh4 Kh7 37. h3 Rg8 38. b5 gxh3 39. Kxh3 Rd8 40. Bd4 Bd5 41. Bxd5 Rxd5 42. Rb1 Rd7 43. b6 Rb7 44. Rb5 Kg6 45. Re5 Rxe5 46. fxe5 Kf7 47. Kh4 Ke6 48. Kxh5 Kd5 49. Kg5 e6 50. Kf4 Rg7 51. Kf3 Kc6 52. Bf2 Rg4 53. Bd4 Rg7 54. Bf2 Rg4 55. Bd4 1/2-1/2

[Event "URU-ch qual Interior"]
[Site "Florida"]
[Date "2004.??.??"]
[Round "3"]
[White "Abadal, Ramon"]
[Black "Silveira, Matias"]
[Result "1-0"]
[ECO "D00"]
[PlyCount "53"]
[EventDate "2004.02.21"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "URU"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. d4 Nf6 2. e3 d5 3. Bd3 e6 4. Nd2 c5 5. c3 Nc6 6. f4 Bd6 7. Ngf3 a6 8. 0-0 c4 9. Bc2 b5 10. Ne5 Bd7 11. Qf3 Ne7 12. g4 g6 13. a3 a5 14. Qg2 Qc7 15. Ndf3 h6 16. Bd2 Bc6 17. Be1 Nd7 18. Kh1 Rh7 19. Qh3 a4 20. Ng5 Bxe5 21. fxe5 Rh8 22. Nxf7 Rh7 23. Nd6+ Kd8 24. Bh4 Rg7 25. Bxe7+ Kxe7 26. Qxh6 Rag8 27. Qg5+ 1-0

[Event "URU-ch qual Interior"]
[Site "Florida"]
[Date "2004.??.??"]
[Round "1"]
[White "Silveira, Matias"]
[Black "Tregarthen, Emiliano"]
[Result "0-1"]
[ECO "B76"]
[PlyCount "70"]
[EventDate "2004.02.21"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "URU"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. Qd2 0-0 8. f3 Nc6 9. 0-0-0 a6 10. g4 Bd7 11. h4 h5 12. g5 Ne8 13. Nce2 Nc7 14. Nxc6 bxc6 15. Bd4 Rb8 16. Bxg7 Kxg7 17. Bh3 Bxh3 18. Rxh3 Qd7 19. Rh2 Rb7 20. Ng3 Rfb8 21. Qd4+ Kg8 22. c3 Qe6 23. c4 Rb4 24. b3 c5 25. Qc3 a5 26. f4 a4 27. f5 Qd7 28. Rb2 axb3 29. axb3 Ne8 30. e5 Qb7 31. exd6 Nxd6 32. fxg6 fxg6 33. Kc2 Nxc4 34. Ra2 Qg2+ 35. Kb1 Rxb3+ 0-1

