[Event "ARG-ch sf"]
[Site "Ezeiza"]
[Date "2000.09.06"]
[Round "9"]
[White "Malbran, Guillermo"]
[Black "Sosa, Martin"]
[Result "1-0"]
[ECO "B13"]
[WhiteElo "2399"]
[PlyCount "85"]
[EventDate "2000.08.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. Bd3 Nc6 5. c3 Qc7 6. Ne2 Nf6 7. Bf4 Qb6 8. Qb3 Qxb3 9. axb3 Bd7 10. b4 e5 11. Bxe5 Nxe5 12. dxe5 Ng4 13. f4 Ne3 14. Kf2 Ng4+ 15. Kf3 f6 16. exf6 Nxf6 17. Nd4 Kf7 18. Nd2 Bd6 19. Bf5 Rhd8 20. Bxd7 Rxd7 21. Rhe1 a6 22. g3 Rc8 23. Re2 Bb8 24. Rae1 Ba7 25. Nf5 Rcc7 26. Nb3 Ne4 27. Nfd4 h5 28. Kg2 Kf6 29. Nf3 Rd8 30. Nfd2 Nd6 31. Nf3 Ne4 32. Nbd2 Nxd2 33. Rxd2 Rdd7 34. Red1 Re7 35. Ne5 g5 36. Rxd5 gxf4 37. gxf4 Rg7+ 38. Kf3 Rg1 39. Rd6+ Kf5 40. Rxg1 Bxg1 41. Rh6 Rg7 42. Nc4 Rg6 43. Nd6+ 1-0

[Event "ARG-ch sf"]
[Site "Ezeiza"]
[Date "2000.09.05"]
[Round "8"]
[White "Sosa, Martin"]
[Black "Della Morte, Pablo"]
[Result "1-0"]
[ECO "A80"]
[BlackElo "2147"]
[PlyCount "61"]
[EventDate "2000.08.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 f5 2. Bg5 h6 3. Bh4 g5 4. e3 Nf6 5. Bg3 d6 6. Bc4 e6 7. Nd2 Nc6 8. c3 Qe7 9. f3 e5 10. Ne2 f4 11. exf4 gxf4 12. dxe5 Nxe5 13. Bxf4 d5 14. Bxe5 Qxe5 15. Bd3 Rg8 16. g3 Bd7 17. Qc2 0-0-0 18. 0-0-0 c5 19. Nf4 c4 20. Bg6 Bd6 21. Bf7 Qe7 22. Bxg8 Bxf4 23. Bxd5 Nxd5 24. gxf4 Qf7 25. Qe4 b5 26. Nxc4 Bf5 27. Ne5 Qh7 28. Qd4 Qb7 29. Rhg1 Kb8 30. Rg7 Qb6 31. Qxb6+ 1-0

[Event "ARG-ch sf"]
[Site "Ezeiza"]
[Date "2000.09.04"]
[Round "7"]
[White "Benedetto, Abel"]
[Black "Sosa, Martin"]
[Result "0-1"]
[ECO "D10"]
[WhiteElo "2175"]
[PlyCount "104"]
[EventDate "2000.08.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 c6 2. c4 d5 3. e3 Nf6 4. Bd3 Bg4 5. f3 Bh5 6. Nc3 e6 7. Nge2 Bg6 8. 0-0 Be7 9. e4 0-0 10. e5 Nfd7 11. a3 dxc4 12. Bxc4 c5 13. f4 cxd4 14. Nb5 d3 15. Bxd3 Nxe5 16. Bxg6 Qb6+ 17. Kh1 Nxg6 18. Nbc3 Nc6 19. Rf3 Rad8 20. Qf1 Nh4 21. Rh3 Nf5 22. Qf3 Qb3 23. Ng1 Ncd4 24. Qh5 h6 25. Nce2 Qd1 26. Nxd4 Rxd4 27. b4 Qxh5 28. Rxh5 Rd1 29. Bb2 Rxa1 30. Bxa1 Bh4 31. g3 Be7 32. g4 Ne3 33. Bd4 Nxg4 34. Bxa7 f5 35. Rh3 Ra8 36. Bb6 Ra6 37. Bd4 Bf6 38. Bc5 b6 39. Be3 b5 40. Bc5 Bb2 41. Rd3 Rxa3 42. Rd8+ Kf7 43. Rb8 Bc1 44. Ne2 Be3 45. Rxb5 Ra2 46. h3 Nf2+ 47. Kg2 Bxc5 48. bxc5 Rxe2 49. c6 Ne4+ 50. Kf3 Rc2 51. Rb7+ Kf6 52. c7 Nd6 0-1

[Event "ARG-ch sf"]
[Site "Ezeiza"]
[Date "2000.09.03"]
[Round "6"]
[White "Sosa, Martin"]
[Black "Julia, Ernesto"]
[Result "0-1"]
[ECO "A48"]
[BlackElo "2393"]
[PlyCount "48"]
[EventDate "2000.08.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 0-0 5. h3 d6 6. Bc4 c5 7. c3 Qb6 8. Qb3 Qc7 9. Nbd2 Nc6 10. Be2 Be6 11. Qa3 cxd4 12. exd4 Nd5 13. Bh2 Bh6 14. 0-0 Nf4 15. Bxf4 Bxf4 16. Rad1 Bf5 17. Qa4 e5 18. Nh4 Bd7 19. Qc4 Rac8 20. Ne4 Qd8 21. Nf3 Nxd4 22. Qd3 Bb5 23. Qxb5 Nxb5 24. Bxb5 Qb6 0-1

[Event "ARG-ch sf"]
[Site "Ezeiza"]
[Date "2000.09.02"]
[Round "5"]
[White "Sosa, Martin"]
[Black "Galindo, Ricardo"]
[Result "1/2-1/2"]
[ECO "D02"]
[BlackElo "2275"]
[PlyCount "92"]
[EventDate "2000.08.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 d5 3. Bf4 c6 4. c3 Bf5 5. e3 Qb6 6. Qb3 Nbd7 7. Nbd2 e6 8. h3 h6 9. Be2 Be7 10. 0-0 0-0 11. Rfe1 Ne4 12. Nxe4 Bxe4 13. Nd2 Bh7 14. Bf1 Qxb3 15. axb3 c5 16. Nf3 a6 17. Rec1 Rac8 18. Ne5 Nxe5 19. Bxe5 Rfd8 20. Be2 Be4 21. Ra4 Bd6 22. Bxd6 Rxd6 23. b4 c4 24. Re1 Rb6 25. Ra5 Kf8 26. Bf1 Ke7 27. f3 Bg6 28. e4 Kd6 29. Rc5 Rbc6 30. exd5 exd5 31. Ra5 f6 32. g3 R6c7 33. Bg2 Re8 34. Rxe8 Bxe8 35. f4 Bb5 36. Kf2 b6 37. Ra1 Ra7 38. Bf1 Bd7 39. Ke3 Bf5 40. Kd2 Be4 41. Ke3 f5 42. Be2 Kc6 43. Bh5 Re7 44. Kf2 Kb7 45. Be2 g6 46. Ra3 Bc2 1/2-1/2

[Event "ARG-ch sf"]
[Site "Ezeiza"]
[Date "2000.09.01"]
[Round "4"]
[White "Real de Azua, Ernesto"]
[Black "Sosa, Martin"]
[Result "0-1"]
[ECO "B06"]
[WhiteElo "2173"]
[PlyCount "109"]
[EventDate "2000.08.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 c6 2. d4 g6 3. Nf3 Bg7 4. Bd3 d5 5. e5 Bg4 6. c3 f6 7. exf6 Nxf6 8. Nbd2 Nh5 9. h3 Nf4 10. Bc2 Bc8 11. Nb3 0-0 12. Bxf4 Rxf4 13. Qe2 a5 14. Nc5 Qd6 15. g3 Rf8 16. Nd3 b6 17. 0-0-0 Bf5 18. Nfe5 Nd7 19. f4 c5 20. Ne1 cxd4 21. cxd4 Nxe5 22. dxe5 Qc6 23. Kb1 Bc8 24. Nf3 e6 25. Bd3 Bd7 26. h4 Be8 27. Nd4 Qd7 28. Qg4 Bf7 29. Bb5 Qe7 30. Bd3 Rfc8 31. Qh3 a4 32. a3 b5 33. Bxb5 Rab8 34. Rc1 Rc5 35. Bxa4 Bf8 36. g4 Rxc1+ 37. Rxc1 Qxa3 38. Qxa3 Bxa3 39. Nb5 Be7 40. Rc7 Bd8 41. Ra7 Be8 42. Nd6 Bxa4 43. Rxa4 Bxh4 44. f5 Bg3 45. fxe6 Bxe5 46. Nf7 Bxb2 47. Kc2 Bf6 48. Kd3 Rb3+ 49. Ke2 Rb6 50. Ra8+ Kg7 51. Re8 h6 52. Kf3 Rb3+ 53. Kg2 d4 54. Nd6 d3 55. Ne4 0-1

[Event "ARG-ch sf"]
[Site "Ezeiza"]
[Date "2000.08.31"]
[Round "3"]
[White "Sosa, Martin"]
[Black "Palmisano, Juan Antonio"]
[Result "1/2-1/2"]
[ECO "A48"]
[BlackElo "2200"]
[PlyCount "72"]
[EventDate "2000.08.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 d6 5. h3 0-0 6. Be2 c5 7. c3 Qb6 8. Qc1 Bf5 9. 0-0 Nc6 10. Nbd2 cxd4 11. exd4 Nd5 12. Nc4 Nxf4 13. Qxf4 Qc7 14. Rfe1 f6 15. Ne3 e5 16. Qh4 g5 17. Qg3 Bg6 18. h4 h6 19. Bc4+ Kh8 20. hxg5 fxg5 21. Nd5 Qd7 22. dxe5 Nxe5 23. Nxe5 Bxe5 24. Rxe5 dxe5 25. Qxe5+ Qg7 26. Qxg7+ Kxg7 27. Nc7 Rfc8 28. Nxa8 Rxc4 29. Rd1 Rc8 30. Rd7+ Kf6 31. Nc7 Bf5 32. Rd6+ Ke7 33. Rd5 Bd7 34. Nb5 Ke6 35. Rd6+ Ke7 36. Rd5 Ke6 1/2-1/2

[Event "ARG-ch sf"]
[Site "Ezeiza"]
[Date "2000.08.30"]
[Round "2"]
[White "Medina, Sergio"]
[Black "Sosa, Martin"]
[Result "1/2-1/2"]
[ECO "D15"]
[WhiteElo "2243"]
[PlyCount "63"]
[EventDate "2000.08.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 c6 2. c4 d5 3. Nf3 Nf6 4. Nc3 Bf5 5. Qb3 Qb6 6. Na4 Qxb3 7. axb3 Nbd7 8. c5 Ne4 9. Nh4 Bg6 10. f3 Nef6 11. Nxg6 hxg6 12. Bg5 a6 13. e3 Nh5 14. Kf2 f5 15. Bd3 Nhf6 16. b4 Kf7 17. Nc3 Re8 18. h4 e6 19. Be2 Be7 20. Rag1 Bd8 21. Ra1 Bc7 22. Bxf6 gxf6 23. f4 e5 24. g3 Nf8 25. Bd3 Ne6 26. Ne2 Rh5 27. b3 Reh8 28. Rac1 exd4 29. Nxd4 Nxd4 30. exd4 g5 31. fxg5 fxg5 32. Bxf5 1/2-1/2

[Event "ARG-ch sf"]
[Site "Ezeiza"]
[Date "2000.08.29"]
[Round "1"]
[White "Sosa, Martin"]
[Black "Schuster, Carlos"]
[Result "1-0"]
[ECO "D02"]
[BlackElo "2255"]
[PlyCount "81"]
[EventDate "2000.08.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 d5 3. Bf4 e6 4. e3 c5 5. c3 Nc6 6. Nbd2 Be7 7. h3 Qb6 8. Qb1 Nh5 9. Bh2 f5 10. Ne5 Nf6 11. Be2 Bd7 12. 0-0 0-0 13. Kh1 Rac8 14. a3 a5 15. Qd3 a4 16. Rab1 Be8 17. dxc5 Qxc5 18. Nxc6 Qxc6 19. c4 Rd8 20. Nf3 Ne4 21. Nd4 Qb6 22. cxd5 Rxd5 23. f3 Nf6 24. Qc2 Rc5 25. Qd2 Bf7 26. b4 Rcc8 27. Rbc1 Nd5 28. e4 Bf6 29. Bg1 fxe4 30. fxe4 Rxc1 31. Rxc1 Ne7 32. e5 Bxe5 33. Nf5 Qd8 34. Qxd8 Rxd8 35. Nxe7+ Kf8 36. Bc5 b6 37. Nc6+ bxc5 38. Nxd8 cxb4 39. Rf1 bxa3 40. Nxf7 Bf6 41. Ng5 1-0

[Event "Pan American-ch U20"]
[Site "Macas"]
[Date "2000.07.13"]
[Round "11"]
[White "Sosa, Martin"]
[Black "Crosa Coll, Martin"]
[Result "1-0"]
[ECO "A48"]
[BlackElo "2242"]
[PlyCount "77"]
[EventDate "2000.07.04"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "ECU"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 d6 5. h3 0-0 6. Be2 Nbd7 7. 0-0 Re8 8. c3 c6 9. a4 Qc7 10. Nbd2 b6 11. Bh2 Bb7 12. a5 b5 13. c4 a6 14. c5 Nf8 15. b4 Qd8 16. Rc1 d5 17. Ne5 N6d7 18. Qb3 Nxe5 19. Bxe5 f6 20. Bg3 Bc8 21. e4 Be6 22. e5 Bh6 23. Rcd1 Qd7 24. f4 Bf5 25. Bd3 fxe5 26. fxe5 Bxd3 27. Qxd3 Bxd2 28. Qxd2 Ne6 29. Bf4 Rf8 30. Bh6 Ng7 31. g4 Qe6 32. Kg2 Rxf1 33. Rxf1 Rf8 34. Rxf8+ Kxf8 35. Qf4+ Kg8 36. Kg3 Qd7 37. Bxg7 Kxg7 38. Qe3 Qe6 39. h4 1-0

[Event "Pan American-ch U20"]
[Site "Macas"]
[Date "2000.07.12"]
[Round "10"]
[White "Pulla, Armijos Oscar"]
[Black "Sosa, Martin"]
[Result "1-0"]
[ECO "E99"]
[WhiteElo "2045"]
[PlyCount "81"]
[EventDate "2000.07.04"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "ECU"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 g6 2. c4 Nf6 3. Nc3 Bg7 4. e4 d6 5. Nf3 0-0 6. Be2 e5 7. 0-0 Nc6 8. d5 Ne7 9. Ne1 Nd7 10. Be3 f5 11. f3 Nf6 12. c5 f4 13. Bf2 g5 14. Rc1 Ne8 15. a4 Ng6 16. a5 Rf7 17. cxd6 cxd6 18. Nb5 a6 19. Bb6 Qf6 20. Na7 Bd7 21. b4 h5 22. b5 axb5 23. Bxb5 Bxb5 24. Nxb5 Bf8 25. Rc2 Rg7 26. Qc1 Ne7 27. Nc7 Nxc7 28. Rxc7 g4 29. Rxb7 gxf3 30. Rxf3 Rc8 31. Qd1 Qg6 32. Qe2 Rc1 33. Kf1 Qe8 34. Ra3 Qc8 35. a6 Rg5 36. Rc7 f3 37. Qxf3 Rxc7 38. Bxc7 Rg4 39. g3 Rg7 40. a7 Qxc7 41. a8Q 1-0

[Event "Pan American-ch U20"]
[Site "Macas"]
[Date "2000.07.10"]
[Round "8"]
[White "Sosa, Martin"]
[Black "Mieles Palau, Daniel Alberto"]
[Result "0-1"]
[ECO "A00"]
[BlackElo "2316"]
[PlyCount "82"]
[EventDate "2000.07.04"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "ECU"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. Nh3 d6 2. g3 c5 3. f3 Nc6 4. Bg2 g6 5. 0-0 Bg7 6. Nf2 e5 7. e4 Nge7 8. Nc3 Be6 9. d3 0-0 10. Ne2 d5 11. Be3 d4 12. Bd2 h6 13. b3 b5 14. f4 Rc8 15. g4 exf4 16. Nxf4 Ne5 17. Nxe6 fxe6 18. a4 b4 19. g5 h5 20. Qe2 Qd6 21. Rae1 N7c6 22. Nh3 Ng4 23. Nf4 Kh7 24. h3 Ne3 25. Bxe3 dxe3 26. e5 Qxe5 27. Be4 Rxf4 28. Qxh5+ Kg8 29. Bxg6 Rf2 30. Qh7+ Kf8 31. Rxf2+ exf2+ 32. Kxf2 Qh2+ 33. Kf1 Ne5 34. Be4 Rc7 35. g6 Qf4+ 36. Ke2 Nf3 37. Bxf3 Bc3 38. Qh5 Qd2+ 39. Kf1 Qxe1+ 40. Kg2 Bd4 41. Qh6+ Ke8 0-1

[Event "Pan American-ch U20"]
[Site "Macas"]
[Date "2000.07.09"]
[Round "7"]
[White "Espinoza, Edgar"]
[Black "Sosa, Martin"]
[Result "1/2-1/2"]
[ECO "B15"]
[PlyCount "111"]
[EventDate "2000.07.04"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "ECU"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 d5 2. Nc3 c6 3. d4 g6 4. Be3 Bg7 5. Qd2 dxe4 6. Nxe4 Nd7 7. Nf3 Ngf6 8. Ng3 Ng4 9. Bf4 Qb6 10. 0-0-0 e5 11. dxe5 Qxf2 12. Qd6 Bf8 13. Qd3 Qb6 14. Ne4 Nc5 15. Nd6+ Bxd6 16. Qxd6 Ne4 17. Qa3 Qc5 18. Qxc5 Nxc5 19. Re1 h5 20. Ng5 Ne6 21. Nxe6 Bxe6 22. h3 Nh6 23. Bd3 0-0-0 24. Bg5 Rd7 25. Bf6 Re8 26. b3 Ng8 27. Bg5 Ne7 28. Rhf1 Nd5 29. Kb2 Kc7 30. a3 Ra8 31. Be4 a5 32. c4 Nb6 33. a4 Nc8 34. Rd1 Ne7 35. Rxd7+ Kxd7 36. Rd1+ Ke8 37. Be3 Nc8 38. Bf3 Rb8 39. Be2 Ne7 40. g4 hxg4 41. hxg4 b6 42. Kc3 c5 43. Bf3 Rd8 44. Rh1 Kd7 45. Bg5 Re8 46. Rd1+ Kc7 47. Rf1 Nc6 48. Bf6 Nd4 49. Bd5 Kd7 50. Kd3 Bxg4 51. Ke4 Bf5+ 52. Ke3 Ne6 53. Bxe6+ fxe6 54. Kd2 Ra8 55. Ra1 Kc6 56. Kc3 1/2-1/2

[Event "Pan American-ch U20"]
[Site "Macas"]
[Date "2000.07.08"]
[Round "6"]
[White "Sosa, Martin"]
[Black "Zambrana, Oswaldo"]
[Result "1/2-1/2"]
[ECO "A47"]
[BlackElo "2253"]
[PlyCount "71"]
[EventDate "2000.07.04"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "ECU"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 e6 3. Bf4 b6 4. e3 Be7 5. Nbd2 0-0 6. h3 c5 7. c3 Bb7 8. Bd3 d6 9. 0-0 Nbd7 10. Qb1 d5 11. Ne5 h6 12. a4 Nxe5 13. dxe5 Nd7 14. Qd1 f5 15. exf6 Nxf6 16. Nf3 Bd6 17. Ne5 Bxe5 18. Bxe5 Nd7 19. Bg3 e5 20. a5 Qf6 21. Bb5 Bc6 22. Qa4 Bxb5 23. Qxb5 Qe6 24. Rfd1 Nf6 25. f3 Rfb8 26. axb6 axb6 27. b4 cxb4 28. Qxb4 Rxa1 29. Rxa1 Rc8 30. Ra7 e4 31. Re7 Qc6 32. fxe4 Qxc3 33. Qxc3 Rxc3 34. exd5 Nxd5 35. Rd7 Rxe3 36. Bf2 1/2-1/2

[Event "Pan American-ch U20"]
[Site "Macas"]
[Date "2000.07.07"]
[Round "5"]
[White "Aucay Pelaez, Mauro"]
[Black "Sosa, Martin"]
[Result "0-1"]
[ECO "B06"]
[WhiteElo "2239"]
[PlyCount "102"]
[EventDate "2000.07.04"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "ECU"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 c6 2. d4 g6 3. Nc3 Bg7 4. Bc4 b5 5. Bb3 d6 6. Nf3 e6 7. 0-0 a6 8. a4 b4 9. Na2 a5 10. c3 Na6 11. Bg5 Ne7 12. Rc1 Bb7 13. Qd2 c5 14. Rfe1 0-0 15. cxb4 axb4 16. d5 e5 17. Bc4 Nc7 18. b3 f6 19. Be3 Ba6 20. Rc2 Ne8 21. Nc1 Kh8 22. Bxa6 Rxa6 23. Qd3 Ra7 24. Nd2 f5 25. Bg5 f4 26. Nc4 Bf6 27. Bxf6+ Nxf6 28. Ne2 g5 29. f3 Rg8 30. h3 Nc8 31. Kf2 h5 32. Rh1 Rh7 33. Rcc1 Qe7 34. Rcf1 g4 35. hxg4 hxg4 36. Qd1 Rg5 37. Rxh7+ Qxh7 38. Rh1 Nh5 39. Qf1 Kg8 40. Rh4 Qg6 41. Qh1 Ng3 42. Rh8+ Kg7 43. Qh4 gxf3 44. Rxc8 Nxe4+ 45. Kxf3 Kf7 46. Rc7+ Kg8 47. Rc8+ Kf7 48. Qh8 Rg3+ 49. Nxg3 Qxg3+ 50. Kxe4 Qxg2+ 51. Kd3 e4# 0-1

[Event "Pan American-ch U20"]
[Site "Macas"]
[Date "2000.07.06"]
[Round "4"]
[White "Sosa, Martin"]
[Black "Castillo, Santiago"]
[Result "1/2-1/2"]
[ECO "A41"]
[BlackElo "2115"]
[PlyCount "44"]
[EventDate "2000.07.04"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "ECU"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 d6 2. Nf3 g6 3. Bf4 Bg7 4. e3 Nd7 5. h3 e5 6. Bh2 Ne7 7. Bc4 0-0 8. 0-0 h6 9. c3 Kh7 10. Nbd2 c6 11. a4 a5 12. Qb1 e4 13. Ne1 d5 14. Be2 Nf5 15. Nc2 Re8 16. b4 Bf8 17. Qb3 Qg5 18. Bf4 Qh4 19. b5 Bd6 20. Bxd6 Nxd6 21. c4 Nf6 22. Rfc1 dxc4 1/2-1/2

[Event "Pan American-ch U20"]
[Site "Macas"]
[Date "2000.07.05"]
[Round "2"]
[White "Caro Bermudes, Erick"]
[Black "Sosa, Martin"]
[Result "1-0"]
[ECO "B13"]
[WhiteElo "2194"]
[PlyCount "93"]
[EventDate "2000.07.04"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "ECU"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 c6 2. d4 g6 3. Nf3 Bg7 4. Bd3 d5 5. exd5 cxd5 6. 0-0 Bg4 7. c3 Nc6 8. Nbd2 Nf6 9. Re1 0-0 10. Nb3 Re8 11. Bf4 Nh5 12. Bg5 f6 13. Bh4 e5 14. dxe5 Nxe5 15. Nbd4 Nf4 16. Bf1 Nxf3+ 17. gxf3 Rxe1 18. Qxe1 Bh3 19. Bg3 Bxf1 20. Qxf1 Bh6 21. Qb5 Qe8 22. Qxb7 Rb8 23. Qc7 Qe5 24. Qd7 Re8 25. Kf1 Re7 26. Qd8+ Kg7 27. Rd1 Bg5 28. Qc8 h5 29. h4 Bh6 30. Kg1 Qd6 31. Kh2 Kh7 32. Rd2 Rd7 33. Qe8 Re7 34. Qb5 Qd8 35. Rd1 Qc8 36. Qf1 g5 37. Bxf4 gxf4 38. Qh3 f5 39. Rd2 Kg6 40. Qg2+ Kf6 41. Qf1 Bf8 42. Qb5 Rd7 43. Re2 Bc5 44. Re6+ Kf7 45. Rc6 Qd8 46. Qxc5 Qxh4+ 47. Kg2 1-0

[Event "Pan American-ch U20"]
[Site "Macas"]
[Date "2000.07.05"]
[Round "3"]
[White "Tournier, Matias"]
[Black "Sosa, Martin"]
[Result "1/2-1/2"]
[ECO "C01"]
[WhiteElo "2138"]
[PlyCount "27"]
[EventDate "2000.07.04"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "ECU"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Bd3 Bd6 5. Nf3 Nf6 6. 0-0 0-0 7. Re1 Bg4 8. h3 Bh5 9. Bg5 Nbd7 10. Nbd2 h6 11. Bxf6 Nxf6 12. c3 Bxf3 13. Nxf3 c6 14. Ne5 1/2-1/2

[Event "Pan American-ch U20"]
[Site "Macas"]
[Date "2000.07.04"]
[Round "1"]
[White "Sosa, Martin"]
[Black "Dumas Aviles, Alejandro"]
[Result "1/2-1/2"]
[ECO "A48"]
[BlackElo "2216"]
[PlyCount "85"]
[EventDate "2000.07.04"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "ECU"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 d6 5. h3 Nbd7 6. Bc4 0-0 7. 0-0 h6 8. c3 c6 9. Nbd2 Qc7 10. a4 e5 11. Bh2 Re8 12. b4 Nh7 13. a5 Ndf8 14. Qb3 e4 15. Ne1 Qe7 16. Bxd6 Qxd6 17. Bxf7+ Kh8 18. Bxe8 Be6 19. Qc2 Rxe8 20. Nxe4 Qe7 21. Nc5 Bc4 22. Ned3 b6 23. axb6 axb6 24. Na4 Qe4 25. Rfd1 Nd7 26. Ne1 Qe6 27. Rdc1 Ng5 28. h4 Ne4 29. Nb2 Bb3 30. Qe2 b5 31. Ra6 Rf8 32. Ned3 Bc4 33. Nxc4 Qxc4 34. f3 Ng3 35. Qd2 Nf5 36. Nf4 Nxh4 37. Qa2 Bxd4 38. exd4 Qxa2 39. Nxg6+ Nxg6 40. Rxa2 Nf6 41. c4 bxc4 42. Rxc4 Ne7 43. Ra7 1/2-1/2

[Event "ARG-ch U18"]
[Site "Isla del Cerrito"]
[Date "1999.??.??"]
[Round "5"]
[White "Benedetto, Abel"]
[Black "Sosa, Martin"]
[Result "0-1"]
[ECO "E98"]
[WhiteElo "2152"]
[PlyCount "96"]
[EventDate "1999.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "ARG"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. d4 d6 2. Nf3 Nf6 3. c4 g6 4. Nc3 Bg7 5. e4 0-0 6. Be2 e5 7. 0-0 Nc6 8. d5 Ne7 9. Ne1 Ne8 10. Be3 f5 11. f3 f4 12. Bf2 b6 13. b4 g5 14. c5 Ng6 15. a4 Rf7 16. a5 bxc5 17. bxc5 Bf8 18. Nd3 h5 19. Nb4 Rg7 20. Ba6 Bxa6 21. Nxa6 Qc8 22. Nb4 g4 23. Kh1 Nf6 24. c6 g3 25. hxg3 fxg3 26. Bxg3 h4 27. Bh2 Nh5 28. Ne2 Qd8 29. Qd2 Be7 30. Nd3 Bg5 31. Qc2 Be3 32. Nf2 Ngf4 33. Nxf4 exf4 34. Nh3 Ng3+ 35. Bxg3 hxg3 36. Ra3 Rh7 37. Rb1 Qc8 38. Rxe3 fxe3 39. Rb7 Rb8 40. a6 Qf8 41. Qe2 Re8 42. Qxe3 Qf6 43. Rb1 Kf7 44. Kg1 Reh8 45. Qxa7 Rxh3 46. gxh3 Rxh3 47. Qxc7+ Kg6 48. Rb2 Qd4+ 0-1

[Event "ARG-ch U18"]
[Site "Isla del Cerrito"]
[Date "1999.??.??"]
[Round "3"]
[White "Di Battista, Carlos"]
[Black "Sosa, Martin"]
[Result "1/2-1/2"]
[ECO "A02"]
[PlyCount "51"]
[EventDate "1999.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "ARG"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. f4 d6 2. Nf3 Nf6 3. b3 g6 4. Bb2 Bg7 5. e3 0-0 6. Be2 b6 7. 0-0 Bb7 8. Nc3 Nbd7 9. h3 c5 10. Nh2 a6 11. Bf3 d5 12. Ne2 Re8 13. Ng4 Nxg4 14. Bxg7 Nxe3 15. dxe3 Kxg7 16. Bxd5 Bxd5 17. Qxd5 Nf6 18. Qxd8 Raxd8 19. Rad1 Ne4 20. Rd3 Rd6 21. Rfd1 Red8 22. g4 b5 23. Kg2 f5 24. Ng3 Nxg3 25. Kxg3 Kf6 26. Kf3 1/2-1/2

[Event "ARG-ch U18"]
[Site "Isla del Cerrito"]
[Date "1999.??.??"]
[Round "6"]
[White "Gastiaburo, Hernan"]
[Black "Sosa, Martin"]
[Result "1/2-1/2"]
[ECO "B07"]
[WhiteElo "2112"]
[PlyCount "67"]
[EventDate "1999.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "ARG"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 c6 4. f4 Qa5 5. Bd3 e5 6. Nf3 Bg4 7. Be3 Nbd7 8. 0-0 Be7 9. h3 Bxf3 10. Qxf3 0-0-0 11. Rfb1 exf4 12. b4 Qh5 13. Qxf4 g5 14. Qxg5 Qxg5 15. Bxg5 Rdg8 16. Be3 Rg3 17. Kf2 Rhg8 18. Rg1 Ne8 19. Ne2 R3g7 20. g4 Bh4+ 21. Kf3 Nc7 22. Ng3 Bxg3 23. Rxg3 f6 24. Rf1 d5 25. exd5 Nxd5 26. Bd2 b5 27. a4 a6 28. c4 bxc4 29. Bxc4 Kb7 30. b5 axb5 31. axb5 N7b6 32. bxc6+ Kxc6 33. Bd3 Ra8 34. Rc1+ 1/2-1/2

[Event "ARG-ch U18"]
[Site "Isla del Cerrito"]
[Date "1999.??.??"]
[Round "1"]
[White "Lima, Emmanuel"]
[Black "Sosa, Martin"]
[Result "1/2-1/2"]
[ECO "A39"]
[PlyCount "81"]
[EventDate "1999.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "ARG"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. c4 c5 2. g3 Nf6 3. Bg2 g6 4. Nc3 Bg7 5. Nf3 0-0 6. 0-0 Nc6 7. d4 cxd4 8. Nxd4 Qb6 9. Nb3 d6 10. Nd5 Nxd5 11. cxd5 Ne5 12. Be3 Qa6 13. Bd4 Bd7 14. f4 Nc4 15. Bxg7 Kxg7 16. Qd4+ Kg8 17. Rfc1 Rfc8 18. e3 b5 19. Bf1 Qb6 20. Bxc4 Rxc4 21. Rxc4 bxc4 22. Nd2 Rc8 23. Rc1 Qa6 24. a3 c3 25. Ne4 cxb2 26. Rxc8+ Bxc8 27. Qxb2 Qc4 28. Qc3 Qa6 29. Nf2 Qb7 30. Qd3 Qb6 31. g4 Ba6 32. Qd2 Qb1+ 33. Kg2 Bc4 34. e4 Bf1+ 35. Kf3 Qb3+ 36. Qe3 Bg2+ 37. Ke2 Qc2+ 38. Ke1 a5 39. h4 a4 40. h5 Qb1+ 41. Ke2 1/2-1/2

[Event "ARG-ch U20"]
[Site "Buenos Aires"]
[Date "1999.??.??"]
[Round "2"]
[White "Sosa, Martin"]
[Black "Della Morte, Pablo"]
[Result "0-1"]
[ECO "A48"]
[BlackElo "2220"]
[PlyCount "68"]
[EventDate "1999.08.14"]
[EventType "swiss"]
[EventRounds "7"]
[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. Bf4 Bg7 4. e3 0-0 5. h3 d6 6. Be2 Nbd7 7. 0-0 e6 8. c4 Qe7 9. Bh2 e5 10. Nc3 c6 11. Re1 Ne8 12. Qb3 f5 13. Rad1 Kh8 14. Qa3 e4 15. Nd2 Ndf6 16. d5 c5 17. b4 Nd7 18. bxc5 Nxc5 19. Nb5 b6 20. Nb3 Bd7 21. Nxc5 bxc5 22. Qa6 Bxb5 23. cxb5 Rb8 24. Rb1 Rb6 25. Qa5 Nc7 26. Qxa7 Nxd5 27. Qxe7 Nxe7 28. Red1 d5 29. Bc7 Rb7 30. Bd6 d4 31. Bc4 d3 32. b6 Ra8 33. Bxc5 Be5 34. f4 Bf6 0-1

[Event "ARG-ch U18"]
[Site "Isla del Cerrito"]
[Date "1999.??.??"]
[Round "2"]
[White "Sosa, Martin"]
[Black "Quinzio, Martin Javier"]
[Result "1-0"]
[ECO "A47"]
[PlyCount "77"]
[EventDate "1999.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "ARG"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. d4 Nf6 2. Bf4 e6 3. e3 b6 4. Nf3 Bb7 5. h3 Be7 6. Bd3 Nd5 7. Bh2 Nb4 8. Be2 Be4 9. Na3 0-0 10. c3 Nd5 11. Nc4 Nf6 12. 0-0 d6 13. a4 c5 14. Nfd2 d5 15. Ne5 Bd6 16. Nxe4 Nxe4 17. f3 Nf6 18. Kh1 Qc7 19. Bd3 Nbd7 20. f4 c4 21. Bc2 Ne4 22. Bxe4 dxe4 23. Qe2 Rac8 24. g4 f5 25. gxf5 exf5 26. Rg1 Nf6 27. Rg5 Bxe5 28. fxe5 Nd5 29. Rag1 g6 30. h4 Qc6 31. h5 Ne7 32. hxg6 hxg6 33. Qh5 Kf7 34. Qh7+ Ke8 35. Rxg6 Nxg6 36. Rxg6 Rc7 37. Qh5 Qxa4 38. e6 Qa1+ 39. Rg1+ 1-0

[Event "ARG-ch U18"]
[Site "Isla del Cerrito"]
[Date "1999.??.??"]
[Round "4"]
[White "Sosa, Martin"]
[Black "Rissotti, Laureano"]
[Result "1-0"]
[ECO "D02"]
[PlyCount "55"]
[EventDate "1999.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "ARG"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 c6 3. Bf4 Nf6 4. c3 Qb6 5. Qb3 g6 6. h3 Bg7 7. Nbd2 0-0 8. e3 Nbd7 9. Be2 Re8 10. 0-0 Nf8 11. Rfe1 h6 12. Ne5 N6d7 13. e4 Qxb3 14. axb3 g5 15. Bh5 Nxe5 16. Bxe5 Bxe5 17. dxe5 Kg7 18. exd5 cxd5 19. Ra5 Be6 20. Nf3 Ng6 21. Bxg6 Kxg6 22. Nd4 a6 23. Rea1 Rac8 24. b4 Rc7 25. b5 axb5 26. Rxb5 Rd8 27. Rb6 Kg7 28. Rxe6 1-0

[Event "ARG-ch U18"]
[Site "Isla del Cerrito"]
[Date "1999.??.??"]
[Round "7"]
[White "Sosa, Martin"]
[Black "Roisman, Fabio"]
[Result "0-1"]
[ECO "D13"]
[BlackElo "2349"]
[PlyCount "68"]
[EventDate "1999.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "ARG"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. d4 c5 2. c3 cxd4 3. cxd4 d5 4. Nc3 Nf6 5. Nf3 Nc6 6. g3 Bf5 7. Bg2 e6 8. 0-0 Be7 9. a3 0-0 10. b4 Ne4 11. Bb2 Nd6 12. Nd2 Bf6 13. e3 Rc8 14. Qe2 Nb8 15. Rfc1 Nd7 16. e4 dxe4 17. Ndxe4 Nxe4 18. Nxe4 Bxe4 19. Bxe4 Qb6 20. Qf3 Bxd4 21. Rxc8 Bxb2 22. Rxf8+ Kxf8 23. Ra2 Bd4 24. Rc2 f5 25. Bxb7 Ne5 26. Qg2 Nd3 27. Rc8+ Kf7 28. Qc6 Bxf2+ 29. Kf1 Qe3 30. Qe8+ Kf6 31. Qh5 Qe1+ 32. Kg2 Qg1+ 33. Kh3 Bc5 34. Qh4+ Kg6 0-1

