[Event "Punta del Este Interdepartamental"]
[Site "Punta del Este"]
[Date "2019.08.25"]
[Round "5.3"]
[White "Lanzilotta Mernies, Marcelo"]
[Black "Sierra, Juan Andres"]
[Result "1-0"]
[ECO "D27"]
[WhiteElo "1970"]
[BlackElo "1831"]
[PlyCount "65"]
[EventDate "2019.08.23"]
[EventType "team-swiss"]
[EventRounds "5"]
[EventCountry "URU"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]
[WhiteTeam "Montevideo Trebejos"]
[BlackTeam "Paysandu"]
[WhiteTeamCountry "URU"]
[BlackTeamCountry "URU"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. c4 dxc4 5. Bxc4 e6 6. Nf3 Nf6 7. 0-0 Be7 8. Nc3 0-0 9. Re1 a6 10. a3 b5 11. Ba2 Bb7 12. Qe2 Re8 13. Bxe6 Bxf3 14. Qxf3 Ra7 15. Ba2 Qxd4 16. Be3 Qd7 17. Rad1 Bd6 18. Bxa7 Rxe1+ 19. Rxe1 Qxa7 20. Nd5 Nxd5 21. Re8+ Bf8 22. Qxd5 Qc7 23. Qxf7+ Qxf7 24. Bxf7+ Kxf7 25. Rxb8 Be7 26. Rb6 Bf6 27. b3 a5 28. Rxb5 Bc3 29. Kf1 Ke6 30. Rc5 Bd2 31. Ke2 Kd6 32. Rh5 Bc3 33. Rxh7 1-0

[Event "Punta del Este Interdepartamental"]
[Site "Punta del Este"]
[Date "2019.08.25"]
[Round "4.3"]
[White "Sierra, Juan Andres"]
[Black "Souza, Ruben Trajano"]
[Result "1-0"]
[ECO "A49"]
[WhiteElo "1831"]
[BlackElo "1855"]
[PlyCount "87"]
[EventDate "2019.08.23"]
[EventType "team-swiss"]
[EventRounds "5"]
[EventCountry "URU"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]
[WhiteTeam "Paysandu"]
[BlackTeam "Rivera"]
[WhiteTeamCountry "URU"]
[BlackTeamCountry "URU"]

1. d4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 0-0 5. 0-0 d6 6. Nbd2 Nc6 7. Re1 e5 8. dxe5 dxe5 9. e4 Bg4 10. h3 Bd7 11. Nc4 Qe7 12. c3 Rad8 13. Qb3 b5 14. Ne3 Na5 15. Qc2 Bc6 16. Nd2 Nb7 17. b4 Rd7 18. a4 bxa4 19. Ba3 Nd6 20. c4 Rfd8 21. b5 Ba8 22. Qxa4 Qe6 23. Nd5 Bxd5 24. cxd5 Qe8 25. Nb3 Rb8 26. Bxd6 cxd6 27. Na5 Bh6 28. Nc6 Rb6 29. Nxa7 Rdb7 30. Re2 Nd7 31. Rea2 Nc5 32. Qc4 Qd7 33. Kh2 Kg7 34. Bf1 f5 35. exf5 Qxf5 36. Nc6 Rxb5 37. Nd8 Rb4 38. Qe2 Rd7 39. Ra7 Kf6 40. Ne6 Rdb7 41. Nxc5 dxc5 42. Rxb7 Rxb7 43. Qa6+ Kg5 44. h4+ 1-0

[Event "Punta del Este Interdepartamental"]
[Site "Punta del Este"]
[Date "2019.08.24"]
[Round "3.3"]
[White "Amaral, Francisco"]
[Black "Sierra, Juan Andres"]
[Result "0-1"]
[ECO "A20"]
[WhiteElo "1573"]
[BlackElo "1831"]
[PlyCount "58"]
[EventDate "2019.08.23"]
[EventType "team-swiss"]
[EventRounds "5"]
[EventCountry "URU"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]
[WhiteTeam "Montevideo CL"]
[BlackTeam "Paysandu"]
[WhiteTeamCountry "URU"]
[BlackTeamCountry "URU"]

1. c4 e5 2. g3 Nf6 3. Bg2 Nc6 4. d3 Bb4+ 5. Nd2 a5 6. e3 0-0 7. Ne2 d6 8. a3 Bc5 9. Nf3 h6 10. h3 Be6 11. d4 exd4 12. exd4 Bxc4 13. dxc5 Re8 14. Be3 Nd5 15. 0-0 Nxe3 16. fxe3 Rxe3 17. Re1 Qf6 18. Nc3 Rd3 19. Qa4 Rxf3 20. Qxc4 Rxg3 21. Ne4 Qh4 22. Rf1 Ne5 23. Qe2 Rg6 24. Qe3 d5 25. Nd2 Re8 26. Kh1 Rg3 27. Qf4 Qxf4 28. Rxf4 Nd3 29. Nf1 Rxg2 0-1

[Event "Punta del Este Interdepartamental"]
[Site "Punta del Este"]
[Date "2019.08.24"]
[Round "2.3"]
[White "Sierra, Juan Andres"]
[Black "Silvera, Pilar"]
[Result "1-0"]
[ECO "B25"]
[WhiteElo "1831"]
[BlackElo "1221"]
[PlyCount "81"]
[EventDate "2019.08.23"]
[EventType "team-swiss"]
[EventRounds "5"]
[EventCountry "URU"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]
[WhiteTeam "Paysandu"]
[BlackTeam "Treinta y Tres"]
[WhiteTeamCountry "URU"]
[BlackTeamCountry "URU"]

1. e4 c5 2. Nc3 d6 3. g3 g6 4. Bg2 Bg7 5. Nge2 e6 6. 0-0 Ne7 7. d3 0-0 8. Bg5 Nbc6 9. Qd2 a6 10. Bh6 b5 11. Bxg7 Kxg7 12. f4 Qb6 13. Kh1 Bb7 14. f5 Ng8 15. Nf4 Nd4 16. Nh5+ Kh8 17. f6 Qd8 18. Rac1 gxh5 19. Qg5 Nxf6 20. Rxf6 Rg8 21. Qf4 Rg4 22. Qf2 Rg6 23. Rxf7 Qg5 24. Rf1 Rg7 25. Rf8+ Rg8 26. Rf7 Rg7 27. Rxg7 Qxg7 28. Nd1 Kg8 29. c3 Nc6 30. Bh3 Bc8 31. Qf3 e5 32. Qxh5 Bxh3 33. Qxh3 Rf8 34. Qe6+ Kh8 35. Rf5 Rxf5 36. exf5 Qf8 37. f6 Nd8 38. Qe7 Kg8 39. Ne3 Nc6 40. Qe6+ Kh8 41. f7 1-0

[Event "Punta del Este Interdepartamental"]
[Site "Punta del Este"]
[Date "2019.08.23"]
[Round "1.3"]
[White "Ibanez, Marcelo"]
[Black "Sierra, Juan Andres"]
[Result "1-0"]
[ECO "A17"]
[WhiteElo "2029"]
[BlackElo "1831"]
[PlyCount "65"]
[EventDate "2019.08.23"]
[EventType "team-swiss"]
[EventRounds "5"]
[EventCountry "URU"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]
[WhiteTeam "Montevideo Piratas"]
[BlackTeam "Paysandu"]
[WhiteTeamCountry "URU"]
[BlackTeamCountry "URU"]

1. c4 Nf6 2. g3 e6 3. Bg2 d5 4. cxd5 exd5 5. Nf3 c6 6. 0-0 Bd6 7. d3 0-0 8. Nc3 h6 9. e4 dxe4 10. dxe4 Bb4 11. Qc2 Bxc3 12. bxc3 Re8 13. Re1 Na6 14. Bb2 Nc5 15. Nd4 Qb6 16. Rab1 Qa6 17. c4 Na4 18. Ba1 Nb6 19. Bf1 Qa4 20. Rb3 Qa5 21. Bc3 Qh5 22. e5 Ng4 23. f4 f6 24. h3 fxe5 25. hxg4 Qxg4 26. Qf2 e4 27. Nf3 e3 28. Qg2 Nd7 29. Bd4 c5 30. Rbxe3 Rf8 31. Bc3 b6 32. Nh2 Qg6 33. Qxa8 1-0

[Event "Pan American-ch Amateur"]
[Site "Montevideo"]
[Date "2013.10.28"]
[Round "8"]
[White "Ibanez, Marcelo"]
[Black "Sierra, Juan Andres"]
[Result "1-0"]
[ECO "E24"]
[WhiteElo "1891"]
[BlackElo "1893"]
[PlyCount "103"]
[EventDate "2013.10.24"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "URU"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 Ne4 6. Qc2 d5 7. Bf4 0-0 8. f3 Nf6 9. e4 Nbd7 10. Bg5 dxe4 11. fxe4 h6 12. Bh4 g5 13. Bf2 Ng4 14. Bd3 f5 15. e5 Nxf2 16. Qxf2 Nxe5 17. 0-0-0 Ng4 18. Qf3 e5 19. dxe5 Qe7 20. Kb2 Qc5 21. Nh3 Be6 22. Rhe1 b5 23. cxb5 a6 24. Kc2 Qxa3 25. Rb1 Qa2+ 26. Rb2 Bb3+ 27. Kc1 Qa3 28. Qc6 Qa1+ 29. Bb1 Qa4 30. Bxf5 Rxf5 31. Qxa8+ Rf8 32. Qxa6 Qc4 33. Qc6 Qa4 34. Qe4 Qxe4 35. Rxe4 Be6 36. b6 cxb6 37. Rxb6 Rf1+ 38. Kd2 Bf5 39. Re1 Rxe1 40. Kxe1 Nxe5 41. Rxh6 Ng4 42. Rh5 Kf7 43. Rxg5 Kf6 44. Rg8 Nxh2 45. Nf2 Kf7 46. Rg5 Bg6 47. Ra5 Kf6 48. c4 Be8 49. Ra6+ Kf5 50. Rd6 Ng4 51. Rd5+ Ne5 52. Nd3 1-0

[Event "Pan American-ch Amateur"]
[Site "Montevideo"]
[Date "2013.10.28"]
[Round "9"]
[White "Sierra, Juan Andres"]
[Black "De Cuadro, Dionisio"]
[Result "1/2-1/2"]
[ECO "C55"]
[WhiteElo "1893"]
[BlackElo "1570"]
[PlyCount "12"]
[EventDate "2013.10.24"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "URU"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bc4 Be7 5. 0-0 0-0 6. h3 d6 1/2-1/2

[Event "Pan American-ch Amateur"]
[Site "Montevideo"]
[Date "2013.10.27"]
[Round "6"]
[White "Ortiz, Soledad"]
[Black "Sierra, Juan Andres"]
[Result "0-1"]
[ECO "B02"]
[WhiteElo "1737"]
[BlackElo "1893"]
[PlyCount "106"]
[EventDate "2013.10.24"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "URU"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. e4 Nf6 2. Nc3 d5 3. exd5 Nxd5 4. Nxd5 Qxd5 5. Nf3 e5 6. c4 Qa5 7. Qc2 Nc6 8. Be2 Bd6 9. 0-0 0-0 10. d3 Nd4 11. Qd1 Nxe2+ 12. Qxe2 Bg4 13. h3 Bd7 14. Bd2 Qa6 15. Bc3 f6 16. a3 c5 17. b4 b5 18. Rfd1 Rfe8 19. Nd2 Rac8 20. Ne4 Bf8 21. bxc5 Bxc5 22. Nxc5 Rxc5 23. Bb4 Rc7 24. Rdc1 bxc4 25. dxc4 Be6 26. Qd2 Rxc4 27. Rxc4 Qxc4 28. Rc1 Qd4 29. Qe2 Rc8 30. Rxc8+ Bxc8 31. Qb5 Qd1+ 32. Kh2 Qd7 33. Qc5 Kf7 34. f3 a6 35. Qc4+ Kg6 36. Qe4+ Qf5 37. Qc6 Qf4+ 38. Kh1 Qf5 39. Qe8+ Kg5 40. Bd2+ Kh4 41. Qa4+ e4 42. fxe4 Qf1+ 43. Kh2 Qb5 44. Qd1 Qe5+ 45. Kg1 Qxe4 46. Be1+ Kg5 47. Qd2+ Kg6 48. Qf2 Bb7 49. Bd2 Kf7 50. Bb4 Qd5 51. Qc2 Qd4+ 52. Kf1 Be4 53. Qd2 Bd3+ 0-1

[Event "Pan American-ch Amateur"]
[Site "Montevideo"]
[Date "2013.10.27"]
[Round "7"]
[White "Sierra, Juan Andres"]
[Black "Nunez de la Rosa, Federico"]
[Result "1-0"]
[ECO "A47"]
[WhiteElo "1893"]
[BlackElo "1860"]
[PlyCount "103"]
[EventDate "2013.10.24"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "URU"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. d4 e6 2. Nf3 Nf6 3. Bg5 Be7 4. e3 b6 5. Bd3 Bb7 6. Nbd2 d6 7. c3 Nbd7 8. Qc2 Rc8 9. 0-0-0 c5 10. Kb1 d5 11. Qa4 c4 12. Be2 Bc6 13. Qc2 b5 14. e4 a5 15. e5 Ng8 16. h4 b4 17. cxb4 axb4 18. Rc1 Ra8 19. Bxe7 Nxe7 20. Ng5 h6 21. Bxc4 hxg5 22. hxg5 Rg8 23. Bd3 Qa5 24. b3 Bb5 25. Bxb5 Qxb5 26. Nf3 Ng6 27. g3 Ke7 28. Qd2 Ra3 29. Ne1 Qa5 30. Nd3 Ra8 31. Nxb4 Qb5 32. Rc2 Kf8 33. Rhc1 Ne7 34. g4 Qa5 35. Qc3 Nb6 36. f4 Nc4 37. Rh2 Rb8 38. Rh8+ Ng8 39. Nc6 Nd2+ 40. Kc2 Rxa2+ 41. Kd1 Qb5 42. Qc5+ Qxc5 43. dxc5 Rxb3 44. Rc2 Rbb2 45. Nb4 Rxc2 46. Nxc2 Nc4 47. c6 Ra6 48. Nb4 Rb6 49. c7 Rc6 50. Nxc6 Nb6 51. f5 g6 52. f6 1-0

[Event "Pan American-ch Amateur"]
[Site "Montevideo"]
[Date "2013.10.26"]
[Round "5"]
[White "Sierra, Juan Andres"]
[Black "Alvarez, Miguel"]
[Result "0-1"]
[ECO "A46"]
[WhiteElo "1893"]
[BlackElo "1908"]
[PlyCount "92"]
[EventDate "2013.10.24"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "URU"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. d4 Nf6 2. Bg5 e6 3. Nf3 d6 4. e4 Be7 5. Bd3 h6 6. Bh4 Nc6 7. c3 0-0 8. Nbd2 a6 9. a4 Nh5 10. Bg3 f5 11. d5 Nxg3 12. hxg3 Ne5 13. Nxe5 dxe5 14. exf5 exf5 15. Qh5 c6 16. c4 cxd5 17. cxd5 Qb6 18. Bc4 Bg5 19. d6+ Kh8 20. Qxg5 Qxd6 21. 0-0-0 b5 22. Ba2 Ra7 23. Kb1 bxa4 24. Nc4 Qxd1+ 25. Qc1 Qxc1+ 26. Rxc1 e4 27. Ne5 Kh7 28. Rc6 Re8 29. Bf7 Rxf7 30. Nxf7 Bb7 31. Rb6 Bd5 32. Nd6 e3 33. fxe3 Rxe3 34. Nxf5 Be4+ 35. Ka2 Bxf5 36. Rxa6 Bc2 37. Rc6 Bb3+ 38. Kb1 Re1+ 39. Rc1 Rxc1+ 40. Kxc1 Kg6 41. Kd2 Kf5 42. Ke3 Kg4 43. Kf2 g6 44. Kg1 Kxg3 45. Kf1 Bd5 46. Kg1 Bxg2 0-1

[Event "Pan American-ch Amateur"]
[Site "Montevideo"]
[Date "2013.10.26"]
[Round "4"]
[White "Sierra, Juan Andres"]
[Black "Chamlian, Aram"]
[Result "1-0"]
[ECO "D30"]
[WhiteElo "1893"]
[BlackElo "1725"]
[PlyCount "41"]
[EventDate "2013.10.24"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "URU"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. Bg5 e6 4. e3 Nbd7 5. Bd3 Be7 6. Nbd2 c6 7. 0-0 0-0 8. c4 dxc4 9. Nxc4 b5 10. Nce5 Bb7 11. Rc1 Rc8 12. a3 Nxe5 13. Nxe5 Nd7 14. Bxe7 Qxe7 15. Nf3 a5 16. Nd2 a4 17. Ne4 e5 18. Bb1 exd4 19. Re1 d3 20. Qxd3 Ne5 21. Nf6+ 1-0

[Event "Pan American-ch Amateur"]
[Site "Montevideo"]
[Date "2013.10.25"]
[Round "3"]
[White "Casas, Nicolas"]
[Black "Sierra, Juan Andres"]
[Result "1/2-1/2"]
[ECO "A46"]
[WhiteElo "1815"]
[BlackElo "1893"]
[PlyCount "55"]
[EventDate "2013.10.24"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "URU"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 e6 3. Bg5 h6 4. Bh4 b6 5. e3 Ba6 6. Bd3 Be7 7. c3 0-0 8. Bxa6 Nxa6 9. Qd3 Qc8 10. Ne5 Qb7 11. Bxf6 gxf6 12. Ng6 Rfe8 13. Nxe7+ Rxe7 14. 0-0 f5 15. f4 Kh7 16. Nd2 Rg8 17. Rf2 f6 18. Re1 d5 19. Rf3 Reg7 20. Re2 Nb8 21. Rh3 Qc6 22. Rf2 Qa4 23. a3 Nc6 24. Qb1 Na5 25. Qf1 Rg6 26. Kh1 Nb7 27. Qe2 Nd6 28. Qf1 1/2-1/2

[Event "Pan American-ch Amateur"]
[Site "Montevideo"]
[Date "2013.10.25"]
[Round "2"]
[White "Sierra, Juan Andres"]
[Black "Uria, Guillermo"]
[Result "1-0"]
[ECO "E91"]
[WhiteElo "1893"]
[BlackElo "1440"]
[PlyCount "77"]
[EventDate "2013.10.24"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "URU"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. d4 Nc6 2. Nf3 Nf6 3. c4 d6 4. Nc3 g6 5. e4 Bg7 6. Be2 0-0 7. 0-0 a6 8. Bg5 h6 9. Bd2 Nh7 10. d5 Nb8 11. Qc1 g5 12. h3 e5 13. Nh2 Nd7 14. Bg4 Nc5 15. b4 Nd3 16. Qb1 Nf4 17. g3 Ng6 18. Nd1 Ne7 19. Ne3 Nf6 20. Kg2 Rb8 21. a4 c6 22. f3 Qc7 23. Rh1 Bxg4 24. hxg4 c5 25. b5 a5 26. b6 Qd7 27. Bxa5 Ra8 28. Qb5 Rfd8 29. Nhf1 Kh7 30. Nd2 Nfg8 31. Bc3 Qxb5 32. cxb5 Nf6 33. Ndc4 Nd7 34. a5 Nb8 35. Ra2 Kg6 36. Rha1 h5 37. gxh5+ Kxh5 38. g4+ Kg6 39. a6 1-0

[Event "Pan American-ch Amateur"]
[Site "Montevideo"]
[Date "2013.10.24"]
[Round "1"]
[White "Serafim, Arnor Jr"]
[Black "Sierra, Juan Andres"]
[Result "1-0"]
[ECO "A22"]
[WhiteElo "1852"]
[BlackElo "1893"]
[PlyCount "91"]
[EventDate "2013.10.24"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "URU"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 e5 3. g3 Bb4 4. Nd5 Nxd5 5. cxd5 0-0 6. Bg2 d6 7. e3 Nd7 8. a3 Ba5 9. b4 Bb6 10. Ne2 a5 11. Rb1 Kh8 12. 0-0 Qg5 13. d3 f5 14. Nc3 axb4 15. axb4 h5 16. h4 Qg6 17. Qc2 Nf6 18. Bd2 f4 19. Ne4 Bf5 20. exf4 Bxe4 21. dxe4 Qxg3 22. Rb3 Qxh4 23. fxe5 dxe5 24. Rh3 Qg4 25. Be3 Bxe3 26. Rxe3 Qd7 27. Rc3 Ne8 28. Qe2 g6 29. Rg3 Rf6 30. Qd2 Kh7 31. Rc1 Nd6 32. Qc3 Ra2 33. Qxc7 Qxc7 34. Rxc7+ Kh6 35. Rf3 Rxf3 36. Bxf3 b5 37. Rc6 Nc4 38. Rc5 Nd6 39. Kf1 Rb2 40. Rc6 Nc4 41. d6 Nd2+ 42. Kg2 Nxf3 43. Kxf3 Rxb4 44. Rc5 Rb3+ 45. Kg2 Ra3 46. d7 1-0

[Event "URU-ch qual Interior"]
[Site "Florida"]
[Date "2004.??.??"]
[Round "7"]
[White "Carbajal, Guillermo"]
[Black "Sierra, Juan Andres"]
[Result "0-1"]
[ECO "D03"]
[PlyCount "110"]
[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 e6 2. Nf3 Nf6 3. Bg5 Be7 4. e3 d5 5. c3 0-0 6. Bd3 Nbd7 7. Nbd2 c5 8. Qe2 b6 9. Ne5 Bb7 10. 0-0-0 c4 11. Bc2 b5 12. g4 Nxe5 13. dxe5 Nd7 14. Bxe7 Qxe7 15. Nf3 b4 16. h4 bxc3 17. bxc3 Qa3+ 18. Kd2 Rfc8 19. Rb1 Rab8 20. g5 Ba8 21. h5 Rxb1 22. Rxb1 Qxa2 23. g6 hxg6 24. hxg6 fxg6 25. Ng5 Bc6 26. f4 Ba4 27. Rc1 Nc5 28. Qg4 Bxc2 29. Rxc2 Nb3+ 30. Ke1 Qb1+ 31. Qd1 Qxd1+ 32. Kxd1 Rc6 33. Ra2 a5 34. Kc2 Ra6 35. Kb1 Kf8 36. Kc2 Ke7 37. Kb1 Rb6 38. Kc2 Kd7 39. Kd1 Kc7 40. Kc2 Kb7 41. Kd1 Ka6 42. Kc2 Kb5 43. Kd1 Ra6 44. Kc2 a4 45. Kd1 a3 46. Kc2 Ka4 47. Nf3 Rb6 48. Nd4 Nc5 49. Kc1 Nd3+ 50. Kc2 Rb2+ 51. Rxb2 axb2 52. Nxe6 Ka3 53. Kb1 Nf2 54. Nd4 Ne4 55. Nf3 Nxc3+ 0-1

[Event "URU-ch qual Interior"]
[Site "Florida"]
[Date "2004.??.??"]
[Round "1"]
[White "Rodriguez, Santiago"]
[Black "Sierra, Juan Andres"]
[Result "1-0"]
[ECO "C62"]
[WhiteElo "2158"]
[PlyCount "43"]
[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 e5 2. d4 exd4 3. Nf3 d6 4. Qxd4 Nc6 5. Bb5 Bd7 6. Bxc6 bxc6 7. 0-0 c5 8. Qc3 Qb8 9. Re1 Be7 10. Qxg7 Bf6 11. Qg3 Ne7 12. e5 dxe5 13. Nxe5 Be6 14. Nc3 Rg8 15. Qf4 Qb7 16. Qa4+ Kf8 17. Bh6+ Bg7 18. Nd7+ Bxd7 19. Qxd7 Ng6 20. Bxg7+ Rxg7 21. Qd5 Qxb2 22. Qxa8+ 1-0

[Event "URU-ch qual Interior"]
[Site "Florida"]
[Date "2004.??.??"]
[Round "5"]
[White "Sierra, Juan Andres"]
[Black "Ulaneo, Matias"]
[Result "1-0"]
[ECO "D51"]
[PlyCount "49"]
[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. c4 e6 3. Nc3 d5 4. Bg5 c6 5. Nf3 Nbd7 6. e3 h6 7. Bh4 Bd6 8. Bd3 Qc7 9. 0-0 b6 10. Rc1 Bb7 11. cxd5 Nxd5 12. Nb5 Qb8 13. Nxd6+ Qxd6 14. a3 0-0 15. Bb1 g5 16. Bg3 Qe7 17. e4 N5f6 18. Qc2 Nh5 19. Bd6 Qf6 20. Bxf8 Nxf8 21. Ne5 Re8 22. Ng4 Qxd4 23. Nxh6+ Kg7 24. Ng4 c5 25. Rfd1 1-0

[Event "URU-chT qual Interior"]
[Site "San Jose"]
[Date "2002.02.09"]
[Round "1"]
[White "Sierra, Juan Andres"]
[Black "Escofet Fernandez, Jaime"]
[Result "1-0"]
[ECO "A88"]
[WhiteElo "2005"]
[BlackElo "2311"]
[PlyCount "61"]
[EventDate "2002.02.??"]
[EventType "team"]
[EventRounds "3"]
[EventCountry "URU"]
[SourceTitle "CBM 086 Extra"]
[Source "ChessBase"]
[SourceDate "2002.03.14"]
[SourceVersion "1"]
[SourceVersionDate "2002.03.14"]
[SourceQuality "1"]

1. d4 c6 2. Nf3 f5 3. g3 Nf6 4. Bg2 g6 5. 0-0 Bg7 6. c4 0-0 7. Nc3 d6 8. Re1 Na6 9. Qd3 Qc7 10. d5 Nc5 11. Qd1 e5 12. dxe6 Bxe6 13. Bf4 Rad8 14. Qc2 Bxc4 15. Na4 Bd5 16. Nxc5 h6 17. Nb3 g5 18. Be3 Be4 19. Qd2 c5 20. Rac1 Qf7 21. Red1 b6 22. h4 f4 23. hxg5 Ng4 24. Bxf4 Qh5 25. Nh4 Bxg2 26. Kxg2 Rxf4 27. Qxf4 hxg5 28. Qf5 Nxf2 29. Ng6 Qxe2 30. Re1 Qd3 31. Ne7+ 1-0

[Event "Pan American-ch U16"]
[Site "Guaymallen"]
[Date "2001.06.05"]
[Round "8"]
[White "Perez, Robinson Molina"]
[Black "Sierra, Juan Andres"]
[Result "1-0"]
[ECO "A24"]
[WhiteElo "2216"]
[PlyCount "55"]
[EventDate "2001.05.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nc6 3. Nf3 Nf6 4. g3 g6 5. Bg2 Bg7 6. 0-0 0-0 7. e4 d6 8. h3 h6 9. d3 Re8 10. Be3 Be6 11. Qd2 Kh7 12. Kh2 Ne7 13. Ng1 g5 14. Nge2 Nd7 15. f4 gxf4 16. gxf4 f5 17. exf5 Nxf5 18. Bxb7 Nxe3 19. Qxe3 Rb8 20. Be4+ Kg8 21. f5 Bf7 22. Rg1 Kf8 23. b3 a6 24. Rg2 Re7 25. Rag1 Bg8 26. Bd5 Bxd5 27. Nxd5 Rf7 28. Rxg7 1-0

[Event "Pan American-ch U16"]
[Site "Guaymallen"]
[Date "2001.06.04"]
[Round "7"]
[White "Beltran, Roberto"]
[Black "Sierra, Juan Andres"]
[Result "1-0"]
[ECO "A03"]
[PlyCount "85"]
[EventDate "2001.05.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. f4 d5 2. Nf3 Nf6 3. d3 c5 4. Nbd2 d4 5. g3 Bf5 6. Bg2 Nc6 7. Nc4 Nd7 8. e4 Bg4 9. h3 Bxf3 10. Qxf3 b5 11. e5 Nb4 12. Qxa8 Qxa8 13. Bxa8 Nxc2+ 14. Kd2 Nxa1 15. Na5 e6 16. b4 cxb4 17. Bb2 b3 18. Nc6 Nc2 19. axb3 Nb4 20. Bxd4 a6 21. Ra1 Nc5 22. Bxc5 Bxc5 23. d4 Be7 24. Nxe7 Kxe7 25. Bb7 Rb8 26. Kc3 Rxb7 27. Kxb4 Ra7 28. Ka5 Rc7 29. Kxa6 Rc3 30. b4 Rxg3 31. Kxb5 Rxh3 32. Ra7+ Ke8 33. Kc5 Rc3+ 34. Kd6 Rc8 35. Re7+ Kf8 36. b5 Rc4 37. d5 exd5 38. Rc7 g6 39. Rxc4 dxc4 40. b6 c3 41. b7 c2 42. b8Q+ Kg7 43. Qb2 1-0

[Event "Pan American-ch U16"]
[Site "Guaymallen"]
[Date "2001.06.03"]
[Round "6"]
[White "Sierra, Juan Andres"]
[Black "Steigman, AJ."]
[Result "1/2-1/2"]
[ECO "E30"]
[BlackElo "2243"]
[PlyCount "66"]
[EventDate "2001.05.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Bg5 h6 5. Bh4 c5 6. e3 Bxc3+ 7. bxc3 d6 8. Nf3 0-0 9. Bd3 Qe7 10. 0-0 e5 11. Nd2 Nc6 12. d5 Nb8 13. Ne4 g5 14. Nxf6+ Qxf6 15. Bg3 Qe7 16. f4 gxf4 17. exf4 e4 18. Re1 f5 19. Be2 Nd7 20. Bf1 Nf6 21. Bh4 Rf7 22. Re3 Bd7 23. Rg3+ Rg7 24. Qe1 Qf7 25. Rxg7+ Qxg7 26. Be2 Kh7 27. Qg3 Qxg3 28. Bxg3 Kg6 29. Bh4 Ne8 30. a4 b6 31. Kf2 Rb8 32. Ke3 Nf6 33. h3 a6 1/2-1/2

[Event "Pan American-ch U16"]
[Site "Guaymallen"]
[Date "2001.06.01"]
[Round "4"]
[White "Mazziotti Irigoyen, Gabriel"]
[Black "Sierra, Juan Andres"]
[Result "1-0"]
[ECO "B03"]
[WhiteElo "2169"]
[PlyCount "101"]
[EventDate "2001.05.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. c4 Nb6 5. f4 dxe5 6. fxe5 Nc6 7. Be3 Bf5 8. Be2 e6 9. a3 a5 10. Nf3 g6 11. 0-0 Bg7 12. b3 0-0 13. Nc3 f6 14. exf6 Bxf6 15. Qd2 Qd7 16. Rad1 Rad8 17. d5 Ne7 18. Bxb6 cxb6 19. Nd4 exd5 20. Nxf5 Nxf5 21. Nxd5 Qd6 22. Nxf6+ Qxf6 23. Qf4 Qb2 24. Rxd8 Rxd8 25. Bg4 Qxa3 26. Qc7 Qc5+ 27. Qxc5 bxc5 28. Bxf5 gxf5 29. Rxf5 b6 30. Kf2 Rd3 31. Rf3 Rd2+ 32. Kg3 Rd4 33. Rc3 Rd8 34. Kf4 Ra8 35. Ke5 a4 36. bxa4 Rxa4 37. Kd5 Ra2 38. Rb3 Ra6 39. Kc6 Ra4 40. Kb5 Ra2 41. Kxb6 Rxg2 42. Rg3+ Rxg3 43. hxg3 Kg7 44. Kxc5 Kg6 45. Kd6 Kg5 46. c5 Kg4 47. c6 Kxg3 48. c7 h5 49. c8Q h4 50. Qc6 h3 51. Qh1 1-0

[Event "Pan American-ch U16"]
[Site "Guaymallen"]
[Date "2001.05.31"]
[Round "3"]
[White "Blejman, Adrian"]
[Black "Sierra, Juan Andres"]
[Result "1/2-1/2"]
[ECO "C00"]
[PlyCount "83"]
[EventDate "2001.05.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 e6 2. Nf3 d5 3. e5 c5 4. b4 c4 5. c3 a6 6. d4 Ne7 7. Ng5 h6 8. Qh5 Ng6 9. Nf3 Bd7 10. h4 a5 11. bxa5 Rxa5 12. Be2 Qb6 13. Bd1 Qa6 14. a3 b5 15. 0-0 b4 16. cxb4 Bxb4 17. Bc2 Nf8 18. Qg4 g6 19. h5 g5 20. Nh2 Be7 21. f4 Rg8 22. f5 exf5 23. Bxf5 Bxf5 24. Qxf5 Qe6 25. Ng4 Qxf5 26. Rxf5 Rh8 27. Bd2 Ra6 28. Ne3 Nc6 29. Bc3 Ne6 30. Nxd5 Ncxd4 31. Nxe7 Kxe7 32. Bb4+ Ke8 33. Rf2 Nf4 34. Bc3 Nde2+ 35. Kh2 Nxc3 36. Nxc3 Nxh5 37. Nb5 Rc6 38. Nd6+ Ke7 39. Rxf7+ Ke6 40. Rf2 Ra8 41. Nf7 c3 42. Nxh6 1/2-1/2

[Event "Pan American-ch U16"]
[Site "Guaymallen"]
[Date "2001.05.29"]
[Round "1"]
[White "Sierra, Juan Andres"]
[Black "Bulo, Paulo Emanuel"]
[Result "0-1"]
[ECO "E97"]
[PlyCount "72"]
[EventDate "2001.05.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. Nc3 0-0 5. e4 d6 6. Be2 e5 7. 0-0 Nc6 8. d5 Ne7 9. Nd2 Nd7 10. b4 f5 11. f3 Kh8 12. Nb3 Ng8 13. c5 f4 14. Bd2 Ndf6 15. Rc1 Ne8 16. Be1 Bf6 17. Bf2 Rf7 18. Na5 Bg7 19. c6 b6 20. Nb3 h5 21. a4 g5 22. a5 Bh6 23. Ra1 Rg7 24. axb6 cxb6 25. h3 Ngf6 26. Nd2 g4 27. hxg4 hxg4 28. Bh4 g3 29. Re1 Rh7 30. Bc4 Bf8 31. Bxf6+ Qxf6 32. Kf1 Rh2 33. Nb3 Qh4 34. Qd2 Bh3 35. Qd3 Bxg2+ 36. Ke2 Bxf3+ 0-1

[Event "Pan American-ch U16"]
[Site "Guaymallen"]
[Date "2001.01.02"]
[Round "5"]
[White "Sierra, Juan Andres"]
[Black "Cabral, Guillermo"]
[Result "1-0"]
[ECO "D03"]
[PlyCount "123"]
[EventDate "2001.05.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. Bg5 e6 4. e3 Nbd7 5. Bd3 c6 6. Nbd2 Be7 7. 0-0 0-0 8. c3 Re8 9. Qc2 Qc7 10. Bxf6 Nxf6 11. Ne5 c5 12. Qd1 c4 13. Bc2 b5 14. a3 a5 15. f4 Bd7 16. g4 Rf8 17. Rf3 Ne8 18. g5 f5 19. Rh3 g6 20. Qe1 Ng7 21. Bd1 Be8 22. Rh6 Qc8 23. Qh4 Nh5 24. Bxh5 gxh5 25. Qg3 Kg7 26. Kf2 Bd6 27. Ndf3 Bxe5 28. Nxe5 Bg6 29. Qh3 Qe8 30. Nf3 Rb8 31. Nd2 b4 32. axb4 axb4 33. Nf1 bxc3 34. bxc3 Rb2+ 35. Kf3 Qe7 36. Ng3 Qf7 37. Nxh5+ Bxh5+ 38. Qxh5 Qxh5+ 39. Rxh5 Rb7 40. Rh6 Re8 41. Ra6 Rbe7 42. Ke2 Kg8 43. Kd2 Kg7 44. Ke2 Kg8 45. Kd2 Kg7 46. Ke2 Kg8 47. h4 Kg7 48. h5 Kg8 49. Kf2 Kg7 50. Kg3 Kg8 51. Kh3 Kg7 52. Kh4 Kg8 53. g6 hxg6 54. hxg6 Kg7 55. Kg5 Kf8 56. Rh8+ Kg7 57. Rxe8 Rxe8 58. Ra7+ Kg8 59. Kf6 Kf8 60. Rf7+ Kg8 61. g7 e5 62. Rf8+ 1-0

[Event "URU-chT"]
[Site "Uruguay"]
[Date "2001.??.??"]
[Round "?"]
[White "Miralles, Nicolas"]
[Black "Sierra, Juan Andres"]
[Result "1/2-1/2"]
[ECO "C19"]
[PlyCount "70"]
[EventDate "2001.??.??"]
[EventType "team"]
[EventRounds "3"]
[EventCountry "URU"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Bxc3+ 6. bxc3 Nc6 7. Nf3 Nge7 8. Bd3 cxd4 9. cxd4 Bd7 10. 0-0 Qb6 11. c3 Rc8 12. Ng5 h6 13. Nh3 0-0 14. Qh5 Nf5 15. Nf4 Nce7 16. g4 g6 17. Qh3 Ng7 18. Bd2 Kh7 19. Nh5 Nxh5 20. gxh5 Ng8 21. Kh1 Qb2 22. Rad1 Ba4 23. hxg6+ fxg6 24. Qh5 Rf5 25. Bxf5 exf5 26. Qf3 Bxd1 27. Rxd1 Ne7 28. Qd3 Qxa3 29. Qb5 Rc7 30. Qe8 Nc6 31. Rg1 Rg7 32. Qe6 Nxd4 33. cxd4 Qf3+ 34. Rg2 Qd1+ 35. Rg1 Qf3+ 1/2-1/2

[Event "URU-ch prel Interior"]
[Site "Paysandu"]
[Date "2001.??.??"]
[Round "3"]
[White "Muzzi, Eduardo"]
[Black "Sierra, Juan Andres"]
[Result "1-0"]
[ECO "C02"]
[PlyCount "95"]
[EventDate "2001.02.24"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "URU"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. e5 c5 4. Nf3 cxd4 5. Bd3 Nc6 6. 0-0 Bd7 7. Bf4 Rc8 8. a3 a6 9. Nbd2 Bc5 10. Re1 Nge7 11. h4 Ba7 12. Ng5 g6 13. Qf3 Nf5 14. Bxf5 gxf5 15. Qh5 Qe7 16. Nxh7 Qf8 17. Nxf8 Rxh5 18. Nxd7 Kxd7 19. Bg5 Ne7 20. Rac1 Ng6 21. Nf3 Bb8 22. g3 Rhh8 23. Bf6 Rhg8 24. Nxd4 Rc4 25. c3 Ba7 26. Rcd1 f4 27. Kh2 fxg3+ 28. fxg3 Nf8 29. Kh3 Nh7 30. Rf1 Bb8 31. Rde1 Nxf6 32. Rxf6 Ke7 33. Rf4 Rg7 34. Rg4 Rxg4 35. Kxg4 b5 36. h5 Kf8 37. Kg5 Rc8 38. h6 Kg8 39. Kh5 Kh7 40. g4 Rg8 41. g5 Bc7 42. Rf1 Bxe5 43. Rxf7+ Kh8 44. Nxe6 a5 45. g6 b4 46. cxb4 axb4 47. g7+ Kh7 48. Ng5# 1-0

[Event "URU-ch prel Interior"]
[Site "Paysandu"]
[Date "2001.??.??"]
[Round "7"]
[White "Oddone, Cristhian"]
[Black "Sierra, Juan Andres"]
[Result "1-0"]
[ECO "A09"]
[PlyCount "79"]
[EventDate "2001.02.24"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "URU"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. Nf3 d5 2. c4 Nf6 3. e3 Bg4 4. h3 Bh5 5. b3 e6 6. Bb2 Nbd7 7. d4 Bb4+ 8. Bc3 Bxc3+ 9. Nxc3 c6 10. Be2 Bg6 11. 0-0 0-0 12. Rc1 Re8 13. Nh4 Ne4 14. Nxg6 Nxc3 15. Rxc3 hxg6 16. Qc2 Qg5 17. Bf3 f5 18. cxd5 exd5 19. b4 Nb6 20. b5 Nc4 21. b6 axb6 22. Rxc4 dxc4 23. Bxc6 Rac8 24. Bxe8 Rxe8 25. Qxc4+ Kh7 26. Qc7 Re7 27. Qf4 Qxf4 28. exf4 Re4 29. Rd1 Rxf4 30. f3 Kg8 31. Kf2 Rh4 32. Kg3 g5 33. d5 Rc4 34. d6 Rc8 35. f4 gxf4+ 36. Kxf4 g6 37. Ke5 Kf7 38. d7 Rd8 39. h4 Ke7 40. g3 1-0

[Event "Semana Santa op"]
[Site "Paysandu"]
[Date "2001.??.??"]
[Round "?"]
[White "Ruggiero, Alvaro"]
[Black "Sierra, Juan Andres"]
[Result "0-1"]
[ECO "C01"]
[PlyCount "66"]
[EventDate "2001.04.12"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "URU"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Nf3 Bd6 5. Bg5 Nf6 6. Qe2+ Be6 7. Nc3 c6 8. g3 Nbd7 9. Bh3 Qe7 10. Bxe6 fxe6 11. Ne5 0-0-0 12. 0-0-0 h6 13. Ng6 Qe8 14. Bxf6 Qxg6 15. Bxd8 Rxd8 16. f4 Nb6 17. Rhe1 Re8 18. Rd3 Nc4 19. Rf3 Qf7 20. f5 e5 21. dxe5 Bxe5 22. Qf1 Qe7 23. Nd1 Bxb2+ 24. Nxb2 Qxe1+ 25. Qxe1 Rxe1+ 26. Nd1 d4 27. Rd3 c5 28. c3 Ne5 29. Rd2 d3 30. c4 Kc7 31. Kb1 Kc6 32. a3 a6 33. Ka2 Re2 0-1

[Event "URU-ch prel Interior"]
[Site "Paysandu"]
[Date "2001.??.??"]
[Round "1"]
[White "Saravia, Gumersindo"]
[Black "Sierra, Juan Andres"]
[Result "1/2-1/2"]
[ECO "C10"]
[PlyCount "77"]
[EventDate "2001.02.24"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "URU"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 c5 4. dxc5 Nf6 5. exd5 exd5 6. Bg5 Bxc5 7. Bxf6 Qxf6 8. Bb5+ Nc6 9. Qe2+ Be6 10. Nxd5 Qxf2+ 11. Qxf2 Bxf2+ 12. Kxf2 Bxd5 13. c4 Be6 14. Bxc6+ bxc6 15. b3 0-0 16. Nf3 Rfd8 17. Rad1 f6 18. Rd4 c5 19. Rd2 Rxd2+ 20. Nxd2 Bf5 21. Re1 a5 22. a3 Kf7 23. Ne4 Bxe4 24. Rxe4 a4 25. b4 cxb4 26. axb4 a3 27. Re1 Ra4 28. Ra1 Rxb4 29. Rxa3 Rxc4 30. Ra7+ Kg6 31. Ra6 Rc5 32. Rb6 h5 33. h3 Kf5 34. Rb4 g5 35. Ra4 Rc2+ 36. Kf3 g4+ 37. hxg4+ hxg4+ 38. Kg3 Kg5 39. Rxg4+ 1/2-1/2

[Event "Semana Santa op"]
[Site "Paysandu"]
[Date "2001.??.??"]
[Round "?"]
[White "Sierra, Juan Andres"]
[Black "Catan, Moises"]
[Result "0-1"]
[ECO "C00"]
[PlyCount "50"]
[EventDate "2001.04.12"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "URU"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 e6 2. c4 d5 3. cxd5 exd5 4. Qa4+ c6 5. Nc3 Nf6 6. e5 Ng4 7. Nf3 Be7 8. d4 0-0 9. h3 Nh6 10. Bxh6 gxh6 11. Bd3 f5 12. Qc2 Na6 13. a3 c5 14. b3 Be6 15. Qe2 Nc7 16. Kd2 Rc8 17. g4 Bg5+ 18. Kc2 c4 19. bxc4 dxc4 20. Bxf5 Bxf5+ 21. gxf5 Rxf5 22. Qxc4+ Nd5 23. Qe2 Rxc3+ 24. Kd1 Rfxf3 25. Rc1 Rxc1# 0-1

[Event "URU-ch prel Interior"]
[Site "Paysandu"]
[Date "2001.??.??"]
[Round "4"]
[White "Sierra, Juan Andres"]
[Black "De la Torre, Andres"]
[Result "0-1"]
[ECO "E94"]
[PlyCount "62"]
[EventDate "2001.02.24"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "URU"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. Nc3 d6 5. e4 0-0 6. Be2 Nbd7 7. 0-0 e5 8. d5 Nc5 9. Qc2 b6 10. b4 Ncxe4 11. Nxe4 Nxe4 12. Qxe4 f5 13. Qb1 e4 14. Bb2 exf3 15. Bxf3 Bd7 16. Bxg7 Kxg7 17. Qb2+ Qf6 18. Qxf6+ Kxf6 19. Rfe1 Rfe8 20. g3 Rxe1+ 21. Rxe1 Re8 22. Rc1 g5 23. Kf1 h6 24. c5 Bb5+ 25. Kg2 g4 26. Bd1 Re1 27. f3 Ba4 28. cxd6 cxd6 29. Rc7 Rxd1 30. Rxa7 Rd2+ 31. Kg1 b5 0-1

[Event "Semana Santa op"]
[Site "Paysandu"]
[Date "2001.??.??"]
[Round "?"]
[White "Sierra, Juan Andres"]
[Black "Muniz, Rafael"]
[Result "0-1"]
[ECO "B23"]
[BlackElo "2172"]
[PlyCount "45"]
[EventDate "2001.04.12"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "URU"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 e6 3. g3 Nc6 4. d3 d5 5. Bg2 Nf6 6. Nge2 Be7 7. 0-0 d4 8. Nb1 e5 9. f4 Ng4 10. f5 Bg5 11. Nf4 exf4 12. Qxg4 Ne5 13. Qh3 f3 14. Bxg5 Qxg5 15. Bxf3 Qe3+ 16. Kg2 Nxf3 17. Rxf3 Qc1 18. Qg4 0-0 19. Qh4 f6 20. g4 Qxb2 21. g5 fxg5 22. Qxg5 Bd7 23. f6 0-1

[Event "Colonia op"]
[Site "Colonia"]
[Date "2001.??.??"]
[Round "?"]
[White "Ulaneo, Ruben"]
[Black "Sierra, Juan Andres"]
[Result "0-1"]
[ECO "D15"]
[PlyCount "20"]
[EventDate "2001.09.??"]
[EventType "swiss"]
[EventRounds "3"]
[EventCountry "URU"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 d5 3. c4 c6 4. Nc3 Bf5 5. Ne5 Nbd7 6. cxd5 Nxe5 7. dxe5 Nxd5 8. e4 Nxc3 9. Qxd8+ Rxd8 10. exf5 Rd1# 0-1

[Event "Colonia op"]
[Site "Colonia"]
[Date "2001.??.??"]
[Round "?"]
[White "Ulaneo, Ruben"]
[Black "Sierra, Juan Andres"]
[Result "1-0"]
[ECO "C07"]
[PlyCount "43"]
[EventDate "2001.09.??"]
[EventType "swiss"]
[EventRounds "3"]
[EventCountry "URU"]
[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 c5 4. c3 Nc6 5. Bb5 Bd7 6. exd5 exd5 7. Qe2+ Qe7 8. dxc5 Qxe2+ 9. Nxe2 Bxc5 10. Nb3 Bb6 11. 0-0 Nf6 12. Bg5 Ne4 13. Bf4 0-0 14. Rad1 Be6 15. Ned4 Nxd4 16. Nxd4 Rad8 17. Rfe1 a6 18. Bd3 Bxd4 19. cxd4 Nd6 20. Rc1 Nc4 21. b3 Nb6 22. Bc7 1-0

[Event "URU-ch prel Interior"]
[Site "Paysandu"]
[Date "2001.??.??"]
[Round "5"]
[White "Viera, Emilio"]
[Black "Sierra, Juan Andres"]
[Result "1-0"]
[ECO "D52"]
[PlyCount "104"]
[EventDate "2001.02.24"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "URU"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 d5 3. c4 e6 4. Nc3 c6 5. Bg5 Nbd7 6. e3 Bb4 7. a3 Bxc3+ 8. bxc3 Qa5 9. Qb3 Ne4 10. Qb4 Qxb4 11. cxb4 Nxg5 12. Nxg5 Nf6 13. Bd3 h6 14. Nf3 dxc4 15. Bxc4 Ne4 16. 0-0 Bd7 17. Ne5 Ke7 18. Bd3 Nd6 19. Rfc1 Rhc8 20. Kf1 a5 21. Nc4 Nxc4 22. Bxc4 Ra7 23. Be2 Rca8 24. Rab1 b5 25. Bf3 Kd6 26. e4 axb4 27. axb4 Ra2 28. e5+ Kc7 29. d5 exd5 30. Bxd5 Kb6 31. Bxa2 Rxa2 32. Ra1 Ra4 33. Rab1 Be6 34. Rb2 g6 35. f4 Ra2 36. Rxa2 Bxa2 37. Kf2 Bc4 38. Ke3 c5 39. bxc5+ Kxc5 40. g4 b4 41. f5 gxf5 42. gxf5 b3 43. e6 fxe6 44. fxe6 b2 45. Rb1 Bxe6 46. Rxb2 Kd6 47. Rf2 Ke7 48. Rf4 h5 49. Rf3 Bf7 50. Ke4 Kf8 51. Kf5 Kg7 52. Kg5 Be8 1-0

[Event "URU-chT 27th"]
[Site "Paysandu"]
[Date "2000.08.27"]
[Round "6"]
[White "Sierra, Juan Andres"]
[Black "Koprek, Walter"]
[Result "1-0"]
[ECO "A48"]
[PlyCount "48"]
[EventDate "2000.08.25"]
[EventType "team"]
[EventRounds "7"]
[EventCountry "URU"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. Bg5 Bg7 4. e3 0-0 5. Bd3 d6 6. 0-0 Nbd7 7. Nbd2 c5 8. c3 a6 9. a4 b6 10. b4 Rb8 11. Qe2 Nd5 12. Nc4 cxb4 13. cxb4 Nxb4 14. Nxd6 h6 15. Bc4 a5 16. Nxc8 hxg5 17. Na7 e6 18. Nb5 Qe7 19. Nd2 Rbc8 20. Ne4 Rfd8 21. Ned6 Rc6 22. Ne4 Nf6 23. Nxf6+ Bxf6 24. Rfc1 Nd5 1-0

[Event "Paysandu op-2"]
[Site "Paysandu"]
[Date "1999.12.05"]
[Round "5"]
[White "Reyes, Edison"]
[Black "Sierra, Juan Andres"]
[Result "0-1"]
[ECO "B33"]
[PlyCount "76"]
[EventDate "1999.12.04"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "URU"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e5 7. Nb3 Be7 8. Qd2 0-0 9. 0-0-0 d6 10. h4 h6 11. Bxf6 Bxf6 12. Qxd6 Bxh4 13. Qxd8 Bxd8 14. g3 Bg5+ 15. Kb1 Bg4 16. Be2 Bxe2 17. Nxe2 f5 18. f4 Be7 19. exf5 exf4 20. g4 f3 21. Nf4 Ne5 22. Rde1 Bd6 23. Ne6 Nxg4 24. Reg1 h5 25. Rxh5 f2 26. Rf1 Bg3 27. Rg5 Nh2 28. Rxg7+ Kh8 29. Rxg3 Nxf1 30. Rh3+ Kg8 31. Nxf8 Rxf8 32. Rf3 Rd8 33. a4 Rd2 34. Kc1 Re2 35. c3 Ne3 36. Nd4 Re1+ 37. Kd2 Nc4+ 38. Kd3 Ne5+ 0-1

