[Event "Buenos Aires Intercoop 25th"]
[White "Viarengo, D."]
[Black "Sosa, Leonardo"]
[Site "Buenos Aires"]
[Round "2"]
[Result "1/2-1/2"]
[Date "1999.??.??"]
[ECO "B15"]
[PlyCount "38"]
[EventDate "1999.08.??"]
[EventType "team-tourn"]
[EventRounds "6"]
[EventCountry "ARG"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nc3 g6 4. Nf3 Bg4 5. e5 Bg7 6. h3 Bxf3 7. Qxf3 e6 8. Be3 h5 9. Bd3 Nh6 10. g4 hxg4 11. hxg4 Nd7 12. 0-0-0 Qe7 13. Rh3 Ng8 14. Rxh8 Bxh8 15. Rh1 Bg7 16. Rh7 Qf8 17. Bg5 Ne7 18. Bxe7 Kxe7 19. Qh3 Qg8 1/2-1/2

[Event "Pan American-chT1"]
[White "Bustamante Casas, Richard"]
[Black "Sosa, Leonardo"]
[Site "Cascavel"]
[Round "?"]
[Result "0-1"]
[Date "1996.??.??"]
[ECO "E88"]
[PlyCount "142"]
[EventDate "1996.??.??"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "ARG"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 0-0 6. Be3 c6 7. Qd2 e5 8. d5 c5 9. Nge2 a6 10. g4 Nbd7 11. Ng3 Ne8 12. 0-0-0 f6 13. h4 Rf7 14. Bh6 Bh8 15. Be2 Nb6 16. Rdg1 Bd7 17. Bd3 Rc8 18. Rg2 Rc7 19. Nd1 Bc8 20. Ne3 Bg7 21. Nd1 Bh8 22. Be3 Bg7 23. Bf2 Na8 24. Be1 Bd7 25. Nc3 b5 26. Qc2 Nb6 27. b3 bxc4 28. bxc4 Rb7 29. Bd2 Qb8 30. Kd1 Nc8 31. Ke2 Rb2 32. Rb1 Rxb1 33. Qxb1 Nb6 34. Rg1 Qa7 35. Qc2 Nc7 36. Rb1 Rf8 37. Rb2 Rb8 38. Qb1 Rb7 39. Nd1 Bc8 40. Ba5 Nca8 41. Nc3 Qb8 42. h5 Nxd5 43. Rxb7 Nxc3+ 44. Bxc3 Qxb7 45. Qxb7 Bxb7 46. Ba5 Kf7 47. Bc2 Bc6 48. Kd3 Bh6 49. hxg6+ hxg6 50. Ne2 Ke6 51. Nc3 Bf8 52. Nd5 Bb7 53. Bd1 Kf7 54. Ke3 Ke8 55. Bc2 Be7 56. Bb3 Bxd5 57. exd5 Bd8 58. Bxd8 Kxd8 59. Bc2 Nb6 60. Kd3 Ke7 61. Bb3 Kf7 62. Ke4 a5 63. a3 Kg7 64. f4 exf4 65. Kxf4 a4 66. Ba2 Kh6 67. g5+ fxg5+ 68. Kg4 Nd7 69. Bb1 Ne5+ 70. Kg3 Nxc4 71. Bc2 Nxa3 0-1

[Event "Pan American-chT1"]
[White "Gastiaburo, Hernan"]
[Black "Sosa, Leonardo"]
[Site "Cascavel"]
[Round "?"]
[Result "1-0"]
[Date "1996.??.??"]
[ECO "B14"]
[PlyCount "46"]
[EventDate "1996.??.??"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "ARG"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. c4 Nf6 5. Nc3 e6 6. Nf3 Be7 7. c5 0-0 8. a3 Nc6 9. Bd3 Qc7 10. Nb5 Qd8 11. 0-0 a6 12. Nc3 h6 13. Re1 Re8 14. Bc2 Bf8 15. Qd3 g6 16. Bf4 Nh5 17. Be5 Nxe5 18. Nxe5 Bg7 19. Nxf7 Qf6 20. Nxh6+ Kh7 21. Ng4 Qg5 22. Ne5 Nf4 23. Qg3 Kh6 1-0

[Event "Pan American-chT1"]
[White "Jacobo, Christian"]
[Black "Sosa, Leonardo"]
[Site "Cascavel"]
[Round "?"]
[Result "0-1"]
[Date "1996.??.??"]
[ECO "B07"]
[PlyCount "57"]
[EventDate "1996.??.??"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "ARG"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Be3 Bg7 5. f3 c6 6. Qd2 0-0 7. 0-0-0 b5 8. g4 Qa5 9. Kb1 b4 10. Nce2 Be6 11. Nc1 Rc8 12. h4 c5 13. d5 Bd7 14. h5 c4 15. hxg6 fxg6 16. Bh6 Bh8 17. Bg5 Bg7 18. Qh2 Qc7 19. Bxf6 exf6 20. Nge2 Kf7 21. Nf4 h6 22. Rd4 Qb6 23. Rxc4 Rxc4 24. Bxc4 Qd4 25. Qd2 f5 26. c3 bxc3 27. Ne6 Bxe6 28. dxe6+ Ke7 29. Bd5 0-1

[Event "Pan American-chT1"]
[White "Sosa, Leonardo"]
[Black "Espinoza, Daniel"]
[Site "Cascavel"]
[Round "?"]
[Result "0-1"]
[Date "1996.??.??"]
[ECO "A45"]
[PlyCount "70"]
[EventDate "1996.??.??"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "ARG"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. d4 Nf6 2. e3 g6 3. Bd3 Bg7 4. Nd2 d6 5. f4 0-0 6. Ngf3 Nc6 7. c3 Bg4 8. 0-0 e5 9. Qc2 exd4 10. exd4 Ne7 11. Ne4 Nxe4 12. Bxe4 Bf5 13. Re1 Re8 14. Bd2 Qd7 15. Rad1 Bxe4 16. Qxe4 Nc6 17. Qd3 Rxe1+ 18. Rxe1 Re8 19. Qb5 Rxe1+ 20. Bxe1 b6 21. Bh4 Ne5 22. Qe2 Nxf3+ 23. Qxf3 d5 24. Qe3 Bf8 25. b3 c5 26. Qd3 cxd4 27. Qxd4 Qc6 28. Qd2 Qe6 29. Qd3 Qg4 30. Bg3 Qe6 31. Bf2 Qc6 32. Be3 Qe6 33. h3 f5 34. Kf2 Kf7 35. Qa6 Qd7 0-1

[Event "Pan American-chT1"]
[White "Sosa, Leonardo"]
[Black "Kreuz, Andre"]
[Site "Cascavel"]
[Round "?"]
[Result "1/2-1/2"]
[Date "1996.??.??"]
[ECO "A07"]
[PlyCount "71"]
[EventDate "1996.??.??"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "ARG"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. Nf3 d5 2. g3 Nf6 3. Bg2 e6 4. 0-0 Nbd7 5. d3 Bd6 6. Nbd2 0-0 7. b3 c6 8. Bb2 e5 9. e3 Re8 10. c4 dxc4 11. Nxc4 Qe7 12. d4 e4 13. Nxd6 Qxd6 14. Ne5 Nb6 15. a4 Be6 16. Ba3 Qc7 17. Qc2 Bd5 18. Rfc1 Nbd7 19. Nc4 Nf8 20. Nd6 Red8 21. Nxe4 Nxe4 22. Bxe4 Ng6 23. Bxd5 Rxd5 24. Qe4 Qd7 25. Rc5 Re8 26. Qf3 Rxc5 27. Bxc5 a6 28. Rd1 Qh3 29. e4 Nh4 30. Qh1 Qg4 31. f3 Qxf3 32. Qxf3 Nxf3+ 33. Kg2 Ng5 34. e5 Rd8 35. Rd3 Ne6 36. Bb6 1/2-1/2

[Event "Pan American-chT1"]
[White "Sosa, Leonardo"]
[Black "Morales, Javier"]
[Site "Cascavel"]
[Round "?"]
[Result "1/2-1/2"]
[Date "1996.??.??"]
[ECO "A07"]
[PlyCount "78"]
[EventDate "1996.??.??"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "ARG"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. 0-0 0-0 5. d3 d5 6. Nbd2 b6 7. e4 e6 8. c3 Ba6 9. c4 Nbd7 10. Qc2 Rc8 11. Re1 dxc4 12. dxc4 Nc5 13. Rb1 Qd3 14. Qxd3 Nxd3 15. Re3 Rcd8 16. Bf1 Nxc1 17. Rxc1 Ng4 18. Rb3 Ne5 19. Rc2 Nxf3+ 20. Rxf3 Bb7 21. Ra3 a5 22. c5 Rd4 23. c6 Bc8 24. Rd3 Rfd8 25. Rxd4 Rxd4 26. Kg2 Bh6 27. f4 e5 28. Kf3 exf4 29. gxf4 Bf8 30. Be2 h5 31. Nb3 Rd8 32. Ke3 Be6 33. Bc4 Bg4 34. Rd2 Rxd2 35. Kxd2 Bg7 36. e5 Bf8 37. Nd4 Be7 38. Nb5 Bd8 39. Ke3 Kf8 1/2-1/2

[Event "Martinez Valle op2"]
[White "Souto, Rodolfo"]
[Black "Sosa, Leonardo"]
[Site "Martinez Valle"]
[Round "2"]
[Result "1-0"]
[Date "1993.??.??"]
[ECO "B17"]
[PlyCount "37"]
[EventDate "1993.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "ARG"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nd2 dxe4 4. Nxe4 Nd7 5. Nf3 Ngf6 6. Bd3 Nxe4 7. Bxe4 Nf6 8. Bd3 Bg4 9. c3 Qc7 10. Bg5 0-0-0 11. Qa4 Bxf3 12. gxf3 Rd5 13. Be3 e5 14. Bf5+ Kb8 15. dxe5 b5 16. Qa6 Rxe5 17. 0-0-0 Nd5 18. Bxa7+ Qxa7 19. Qc8# 1-0

[Event "San Fernando op"]
[White "Fuentes Vasallo, Eduardo Alberto"]
[Black "Sosa, Leonardo"]
[Site "San Fernando"]
[Round "3"]
[Result "1-0"]
[Date "1992.??.??"]
[ECO "B82"]
[WhiteElo "2200"]
[PlyCount "65"]
[EventDate "1992.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "ARG"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nf6 3. Nc3 d6 4. d4 cxd4 5. Nxd4 a6 6. f4 e6 7. Qf3 Qb6 8. Nb3 Nbd7 9. Be3 Qc7 10. g4 Nc5 11. g5 Nfd7 12. Nd4 b5 13. a3 Nb6 14. f5 e5 15. Nb3 Bb7 16. 0-0-0 Nxb3+ 17. cxb3 Nd7 18. Kb1 Rc8 19. Rc1 Qb8 20. f6 gxf6 21. gxf6 h5 22. Bh3 Rd8 23. Rhg1 Bc8 24. Nd5 Nc5 25. Bxc8 Rxc8 26. b4 Ne6 27. Rxc8+ Qxc8 28. Rc1 Qb7 29. Nb6 Bh6 30. Nc8 Bf8 31. h4 Nc7 32. Qf5 Ne6 33. Nb6 1-0

[Event "Wch U20"]
[White "Gokhale, Jayant Suresh"]
[Black "Sosa, Leonardo"]
[Site "Buenos Aires"]
[Round "?"]
[Result "1-0"]
[Date "1992.??.??"]
[ECO "D00"]
[WhiteElo "2330"]
[BlackElo "2245"]
[PlyCount "89"]
[EventDate "1992.10.??"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "ARG"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. d4 Nf6 2. Nc3 d5 3. Bg5 g6 4. Nf3 Bg7 5. e3 0-0 6. Bd3 b6 7. 0-0 Bb7 8. Re1 Ne4 9. Bf4 Nxc3 10. bxc3 Nd7 11. c4 dxc4 12. Bxc4 c5 13. c3 Rc8 14. Bb3 c4 15. Bc2 Re8 16. e4 e5 17. Bg5 Qc7 18. d5 a6 19. a4 Bf8 20. Rb1 Ba8 21. h4 Rb8 22. h5 b5 23. hxg6 hxg6 24. axb5 axb5 25. Bd2 Be7 26. Ng5 Kg7 27. Qf3 Bf6 28. Qe2 Rh8 29. Nf3 Rh5 30. g3 Nc5 31. Kg2 Qd7 32. Rh1 Rbh8 33. Rxh5 Rxh5 34. Rh1 Rxh1 35. Kxh1 Qg4 36. Kg2 Be7 37. Qe3 Qh5 38. Bc1 f5 39. Nxe5 f4 40. Qxf4 Bf6 41. Ng4 Bd8 42. Be3 Nd3 43. Bd4+ Kg8 44. Bxd3 cxd3 45. Nh6+ 1-0

[Event "Buenos Aires GP I"]
[White "Leibovich, D."]
[Black "Sosa, Leonardo"]
[Site "Buenos Aires"]
[Round "7"]
[Result "0-1"]
[Date "1992.??.??"]
[ECO "A48"]
[BlackElo "2240"]
[PlyCount "74"]
[EventDate "1992.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "ARG"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. Bg5 Bg7 4. Nbd2 0-0 5. e4 d6 6. c3 Nbd7 7. Bc4 c5 8. 0-0 a6 9. e5 Ne8 10. e6 fxe6 11. Bxe6+ Kh8 12. Re1 Nef6 13. Qe2 cxd4 14. Nxd4 Ne5 15. Kh1 Nf7 16. N2f3 h6 17. Bh4 g5 18. Bg3 Nh5 19. Qc2 Nxg3+ 20. hxg3 Ne5 21. Rad1 Qe8 22. Nxe5 Bxe5 23. Bxc8 Qxc8 24. Qg6 Rf6 25. Qh5 Bxd4 26. Rxd4 e5 27. Rd5 Qc4 28. Red1 Qc7 29. R1d2 Qe7 30. Qd1 Rd8 31. c4 b6 32. Qa4 Qf7 33. Kg1 e4 34. Qb3 Rf8 35. Qxb6 e3 36. Rd1 exf2+ 37. Kf1 Qh5 0-1

[Event "Buenos Aires GP I"]
[White "Milberg, Alex"]
[Black "Sosa, Leonardo"]
[Site "Buenos Aires"]
[Round "5"]
[Result "0-1"]
[Date "1992.??.??"]
[ECO "E93"]
[PlyCount "92"]
[EventDate "1992.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "ARG"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. Nc3 0-0 5. e4 d6 6. Be2 Nbd7 7. Bg5 e5 8. d5 a5 9. Nd2 c6 10. 0-0 Qc7 11. Qc2 Kh8 12. a3 Ng8 13. Bg4 Bh6 14. h4 f6 15. Bxh6 Nxh6 16. Bh3 f5 17. exf5 gxf5 18. Nf3 e4 19. Ng5 Ne5 20. b3 Nhf7 21. Qd2 Qe7 22. Nxf7+ Nxf7 23. Qf4 Qe5 24. Ne2 Bd7 25. Rfd1 c5 26. Rab1 Rg8 27. Qxe5+ Nxe5 28. Nf4 Nf3+ 29. Kf1 Nxh4 30. g3 Nf3 31. b4 axb4 32. axb4 Ra2 33. Kg2 Nd2 34. Rxd2 Rxd2 35. bxc5 Ra8 36. cxd6 Raa2 37. Rxb7 Rxf2+ 38. Kg1 e3 39. Rb1 Rfc2 40. Ne6 Rxc4 41. Bxf5 Rd2 42. Be4 Bxe6 43. dxe6 Rxe4 44. e7 Kg7 45. Rb7 Kf7 46. d7 Rxe7 0-1

[Event "Wch U20"]
[White "Nakamura, Ryuji"]
[Black "Sosa, Leonardo"]
[Site "Buenos Aires"]
[Round "?"]
[Result "0-1"]
[Date "1992.??.??"]
[ECO "E98"]
[BlackElo "2245"]
[PlyCount "71"]
[EventDate "1992.10.??"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "ARG"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 0-0 6. Be2 e5 7. 0-0 Nc6 8. d5 Ne7 9. Ne1 Ne8 10. Nd3 f5 11. Bd2 Rf7 12. f3 f4 13. c5 g5 14. cxd6 cxd6 15. Nf2 Bf8 16. Rc1 h5 17. h3 Rg7 18. Nb5 a6 19. Nc7 Nxc7 20. Ba5 Ng6 21. Qc2 g4 22. fxg4 hxg4 23. Nxg4 Qg5 24. Bxc7 Nh4 25. Qb3 Be7 26. Bb6 Qg6 27. Rc4 Bd7 28. a4 Rf8 29. Qd3 Rff7 30. Bf3 Bxg4 31. Bxg4 f3 32. g3 f2+ 33. Rxf2 Rf3 34. Rxf3 Nxf3+ 35. Bxf3 Qxg3+ 36. Kf1 0-1

[Event "Buenos Aires GP I"]
[White "Radoszta, Armando Esteban"]
[Black "Sosa, Leonardo"]
[Site "Buenos Aires"]
[Round "2"]
[Result "0-1"]
[Date "1992.??.??"]
[ECO "B90"]
[PlyCount "82"]
[EventDate "1992.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "ARG"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nf6 3. Nc3 d6 4. d4 cxd4 5. Nxd4 a6 6. a4 b6 7. Bc4 Bb7 8. Qe2 Nbd7 9. 0-0 e6 10. f3 Be7 11. Be3 0-0 12. Rad1 Qc7 13. Kh1 Ne5 14. Bb3 Rac8 15. Qf2 Nfd7 16. Qg3 Nc5 17. f4 Ned7 18. f5 Nxb3 19. cxb3 e5 20. f6 Nxf6 21. Nf5 Nh5 22. Qg4 g6 23. Bxb6 Qxb6 24. Nxe7+ Kh8 25. Nxc8 Bxc8 26. Qe2 Nf4 27. Qc4 Bg4 28. Rde1 Qd8 29. Qxa6 Qg5 30. Nd5 Bc8 31. Nxf4 Bxa6 32. Nh3 Qe7 33. Rf3 f5 34. b4 fxe4 35. Rxf8+ Qxf8 36. b5 Bc8 37. Ng1 d5 38. Rc1 d4 39. b6 d3 40. Ra1 e3 41. a5 Ba6 0-1

[Event "Wch U20"]
[White "Relange, Eloi"]
[Black "Sosa, Leonardo"]
[Site "Buenos Aires"]
[Round "?"]
[Result "1-0"]
[Date "1992.??.??"]
[ECO "B31"]
[WhiteElo "2365"]
[BlackElo "2245"]
[PlyCount "95"]
[EventDate "1992.10.??"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "ARG"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. Bxc6 dxc6 5. h3 Bg7 6. d3 e5 7. Be3 Qe7 8. Nbd2 Nf6 9. 0-0 0-0 10. a4 Nh5 11. Nc4 f6 12. Qd2 Be6 13. g4 Nf4 14. Bxf4 exf4 15. Qxf4 Bxc4 16. dxc4 Qf7 17. b3 f5 18. Rae1 fxg4 19. Qxf7+ Kxf7 20. hxg4 Ke7 21. Nh4 Rf4 22. f3 Raf8 23. Rd1 Ke6 24. Rd3 Bd4+ 25. Kg2 Bf6 26. Rh1 Rf7 27. Rh3 a5 28. Rh1 Ke5 29. Kg3 Bxh4+ 30. Rxh4 Ke6 31. g5 Rxh4 32. Kxh4 Ke5 33. Kg4 Rf4+ 34. Kg3 Rf7 35. Rd8 Re7 36. c3 b6 37. Kg4 Rb7 38. Kg3 Re7 39. Rb8 Kd6 40. Rxb6 Rd7 41. Rb8 Re7 42. Kf4 Kc7 43. Ra8 Kd6 44. Rxa5 Rb7 45. b4 cxb4 46. cxb4 Rxb4 47. c5+ Ke6 48. Ra6 1-0

[Event "Wch U20"]
[White "Sosa, Leonardo"]
[Black "Allen, Andrew"]
[Site "Buenos Aires"]
[Round "?"]
[Result "0-1"]
[Date "1992.??.??"]
[ECO "E41"]
[WhiteElo "2245"]
[BlackElo "2170"]
[PlyCount "92"]
[EventDate "1992.10.??"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "ARG"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 Nc6 6. Nf3 Bxc3+ 7. bxc3 d6 8. 0-0 e5 9. Ng5 0-0 10. Ne4 b6 11. f4 exd4 12. cxd4 Bf5 13. Ng3 Bxd3 14. Qxd3 cxd4 15. exd4 d5 16. c5 Re8 17. f5 bxc5 18. dxc5 Qa5 19. Be3 Rab8 20. Bd4 Nxd4 21. Qxd4 Rb4 22. Qc3 Qb5 23. Rac1 Rc4 24. Qa3 Ra4 25. Qb3 Rb4 26. Qa3 a5 27. Qf3 Rc4 28. Rxc4 dxc4 29. c6 Qc5+ 30. Kh1 Rc8 31. Rc1 Rxc6 32. Qc3 h6 33. h4 Qf2 34. Rc2 Qf4 35. Qf3 Qxh4+ 36. Kg1 Qd4+ 37. Kh1 Rb6 38. Rc1 Rb2 39. a4 Rf2 40. Qc3 Qh4+ 41. Kg1 Rf4 42. Rf1 Rd4 43. Qe1 Rd3 44. Rf3 Rxf3 45. gxf3 Kh7 46. Kg2 Nh5 0-1

[Event "Buenos Aires GP I"]
[White "Sosa, Leonardo"]
[Black "Cativelli, Gerardo"]
[Site "Buenos Aires"]
[Round "3"]
[Result "0-1"]
[Date "1992.??.??"]
[ECO "C06"]
[BlackElo "2225"]
[PlyCount "46"]
[EventDate "1992.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "ARG"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. Bd3 c5 6. c3 Nc6 7. Ne2 cxd4 8. cxd4 Nb6 9. 0-0 Be7 10. a3 g6 11. b4 Bd7 12. Nb3 h5 13. Nc5 Rb8 14. Qc2 Qc8 15. Bxg6 fxg6 16. Qxg6+ Kd8 17. Bg5 Kc7 18. Bxe7 Nxe7 19. Rac1 Nc4 20. Qf6 Nf5 21. Nf4 Rh6 22. Ncxe6+ Bxe6 23. Nxd5+ Bxd5 0-1

[Event "Wch U20"]
[White "Sosa, Leonardo"]
[Black "Escobar Forero, Alder"]
[Site "Buenos Aires"]
[Round "?"]
[Result "1-0"]
[Date "1992.??.??"]
[ECO "E97"]
[WhiteElo "2245"]
[BlackElo "2215"]
[PlyCount "91"]
[EventDate "1992.10.??"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "ARG"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 0-0 6. Be2 e5 7. 0-0 Nc6 8. d5 Ne7 9. Nd2 Ne8 10. b4 f5 11. c5 a6 12. f3 f4 13. Nc4 Rf7 14. a4 g5 15. Ba3 Bf8 16. cxd6 cxd6 17. a5 Kh8 18. Nb6 Rb8 19. Rc1 Ng8 20. b5 Ngf6 21. Bb4 Rg7 22. Nxc8 Rxc8 23. bxa6 bxa6 24. Kh1 Rb8 25. Na2 g4 26. Rc6 gxf3 27. Bxf3 Nc7 28. Be1 Qd7 29. Nc3 Ne6 30. Rb6 Rc8 31. dxe6 Qxe6 32. Nd5 Nd7 33. Rxa6 Nc5 34. Rb6 Qg6 35. Qe2 Ne6 36. Bf2 h5 37. a6 h4 38. Rb7 h3 39. Rxg7 hxg2+ 40. Bxg2 Qxg7 41. Qh5+ Qh6 42. Qxh6+ Bxh6 43. Bh3 Re8 44. Bxe6 Rxe6 45. a7 Re8 46. Nc7 1-0

[Event "Buenos Aires GP I"]
[White "Sosa, Leonardo"]
[Black "Ginzburg, Maximiliano"]
[Site "Buenos Aires"]
[Round "6"]
[Result "0-1"]
[Date "1992.??.??"]
[ECO "A82"]
[PlyCount "82"]
[EventDate "1992.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "ARG"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. d4 f5 2. e4 fxe4 3. Nc3 Nf6 4. f3 exf3 5. Nxf3 e6 6. Bd3 Be7 7. 0-0 0-0 8. Ne4 Nc6 9. c3 Qe8 10. Qc2 Nxe4 11. Bxe4 Qh5 12. Be3 d5 13. Bd3 Bd7 14. Rf2 Bd6 15. Raf1 e5 16. dxe5 Nxe5 17. Nxe5 Rxf2 18. Rxf2 Bxe5 19. Bf4 Bxf4 20. Rxf4 Re8 21. Qf2 b6 22. Rh4 Qd1+ 23. Qf1 Qxf1+ 24. Kxf1 g6 25. Rd4 Be6 26. Bb5 Rf8+ 27. Ke2 c5 28. Rd2 Rf5 29. a3 Kf7 30. b4 Ke7 31. Bd3 Re5+ 32. Kd1 Kd6 33. Rf2 Bf5 34. Be2 h5 35. Kd2 d4 36. cxd4 cxd4 37. h3 h4 38. Rf4 Re4 39. Rf2 Ke5 40. Rf1 Re3 41. Rc1 Rxa3 0-1

[Event "Buenos Aires GP II"]
[White "Sosa, Leonardo"]
[Black "Laboranti, Alberto"]
[Site "Buenos Aires"]
[Round "6"]
[Result "0-1"]
[Date "1992.??.??"]
[ECO "E83"]
[PlyCount "62"]
[EventDate "1992.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 Nc6 6. Be3 a6 7. Qd2 0-0 8. 0-0-0 Re8 9. g4 e5 10. d5 Nd4 11. Nce2 c5 12. h4 b5 13. Ng3 Rb8 14. h5 bxc4 15. hxg6 fxg6 16. Bxc4 Qb6 17. Rf1 Re7 18. Nh3 Reb7 19. Rh2 Qc7 20. Qc3 Rb4 21. Ng5 Bxg4 22. Nxh7 Nxh7 23. fxg4 Rf8 24. Rxf8+ Bxf8 25. Rf2 Bg7 26. Bxa6 Qd7 27. Be2 Nxe2+ 28. Nxe2 Qxg4 29. a3 Rxe4 30. Qa5 Rxe3 31. Qd8+ Nf8 0-1

[Event "Wch U20"]
[White "Sosa, Leonardo"]
[Black "Leon, Guido"]
[Site "Buenos Aires"]
[Round "?"]
[Result "1-0"]
[Date "1992.??.??"]
[ECO "E92"]
[WhiteElo "2245"]
[PlyCount "57"]
[EventDate "1992.10.??"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "ARG"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 0-0 6. Be2 e5 7. Be3 Nc6 8. d5 Ne7 9. Nd2 Nd7 10. b4 f5 11. f3 f4 12. Bf2 Nf6 13. c5 Ne8 14. Nc4 Bd7 15. Na5 Bc8 16. Rc1 g5 17. Qc2 Ng6 18. cxd6 cxd6 19. Nb5 Nh4 20. 0-0 g4 21. fxg4 f3 22. Bxh4 Qxh4 23. Bxf3 Bh6 24. Rce1 Bf4 25. g3 Bxg3 26. hxg3 Qxg3+ 27. Bg2 Rf6 28. Rxf6 Qxe1+ 29. Rf1 1-0

[Event "Wch U20"]
[White "Sosa, Leonardo"]
[Black "Michelakis, George"]
[Site "Buenos Aires"]
[Round "?"]
[Result "0-1"]
[Date "1992.??.??"]
[ECO "E41"]
[WhiteElo "2245"]
[BlackElo "2355"]
[PlyCount "122"]
[EventDate "1992.10.??"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "ARG"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 Nc6 6. Nf3 Bxc3+ 7. bxc3 d6 8. 0-0 e5 9. Nd2 0-0 10. d5 Ne7 11. f4 exf4 12. exf4 Bf5 13. Nf3 Qd7 14. h3 h5 15. Nh4 Rfe8 16. Qf3 g6 17. Nxf5 Nxf5 18. Bd2 h4 19. Bxf5 Qxf5 20. Be1 Ne4 21. Rd1 Qf6 22. Qg4 Nxc3 23. Bxh4 Qf5 24. Qxf5 gxf5 25. Rde1 a6 26. Rf3 Nxa2 27. Rfe3 Rxe3 28. Rxe3 Nb4 29. Be7 b5 30. Bxd6 bxc4 31. Rc3 Nxd5 32. Rxc4 Rc8 33. g3 Rc6 34. Bxc5 Nf6 35. Rc1 Ne4 36. Be3 Rxc1+ 37. Bxc1 Nxg3 38. Kf2 Ne4+ 39. Ke3 Kg7 40. Ba3 Kg6 41. Bb4 Kh5 42. Be1 Nf6 43. Kd4 Kg6 44. Bc3 Nh5 45. Ke3 f6 46. Bd2 Kf7 47. Kd3 Ke7 48. h4 Kf7 49. Kd4 Kg6 50. Kd5 a5 51. Bxa5 Nxf4+ 52. Kd4 Ng2 53. Bd2 Kh5 54. Kd3 Kxh4 55. Ke2 Kg4 56. Bc3 Nf4+ 57. Kf2 Nd5 58. Bd4 f4 59. Bb2 f5 60. Bd4 f3 61. Bc5 Nf6 0-1

[Event "Wch U20"]
[White "Sosa, Leonardo"]
[Black "Rocha, Sergio MC"]
[Site "Buenos Aires"]
[Round "?"]
[Result "0-1"]
[Date "1992.??.??"]
[ECO "A41"]
[WhiteElo "2245"]
[BlackElo "2310"]
[PlyCount "120"]
[EventDate "1992.10.??"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "ARG"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. d4 d6 2. Nf3 Bg4 3. c4 Nd7 4. g3 Bxf3 5. exf3 Ngf6 6. Bg2 g6 7. 0-0 Bg7 8. f4 c6 9. Nc3 0-0 10. Rb1 Nb6 11. b3 d5 12. c5 Nc8 13. Re1 e6 14. b4 a6 15. a4 Ne7 16. b5 axb5 17. axb5 Nf5 18. Be3 Ra3 19. Qd2 Qa5 20. Rec1 Nd7 21. g4 Nxe3 22. fxe3 Nxc5 23. Qc2 Nd7 24. bxc6 bxc6 25. Rb3 Rxb3 26. Qxb3 c5 27. dxc5 Rb8 28. Qc2 Qxc5 29. Nd1 Qb4 30. Nf2 Nb6 31. Rb1 Qd6 32. Bf1 h6 33. f5 exf5 34. gxf5 Re8 35. fxg6 fxg6 36. Qd2 h5 37. Qb4 Re6 38. Qxd6 Rxd6 39. Rd1 Bh6 40. e4 Rf6 41. Rd3 d4 42. Nd1 Bg7 43. e5 Re6 44. Rxd4 Bxe5 45. Rd2 Kg7 46. Re2 Nd5 47. Rd2 Ne7 48. Bc4 Rc6 49. Bb3 Nf5 50. Bc2 Nd6 51. Kg2 Rc4 52. Ne3 Rc3 53. Rd3 Rc8 54. Rd5 Bf4 55. Bb1 Rb8 56. Bd3 Nf7 57. Nf1 Ne5 58. Ng3 Rb2+ 59. Kg1 Nf3+ 60. Kf1 Nxh2+ 0-1

[Event "Buenos Aires GP I"]
[White "Sosa, Leonardo"]
[Black "Stratico, M."]
[Site "Buenos Aires"]
[Round "4"]
[Result "1/2-1/2"]
[Date "1992.??.??"]
[ECO "E94"]
[PlyCount "51"]
[EventDate "1992.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "ARG"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 0-0 6. Be2 e5 7. d5 Nbd7 8. 0-0 Nc5 9. Nd2 a5 10. Re1 Ne8 11. Bf1 f5 12. exf5 Bxf5 13. Nde4 Nxe4 14. Nxe4 Nf6 15. Bg5 Qe8 16. Bd3 Nxe4 17. Bxe4 Qf7 18. f3 h6 19. Bh4 Bf6 20. Bf2 b6 21. Qd3 Bg7 22. Rac1 Qf6 23. Rc2 h5 24. Be3 Kh7 25. Qd2 Rg8 26. b3 1/2-1/2

[Event "Wch U20"]
[White "Sosa, Leonardo"]
[Black "Tratar, Marko"]
[Site "Buenos Aires"]
[Round "?"]
[Result "1-0"]
[Date "1992.??.??"]
[ECO "E92"]
[WhiteElo "2245"]
[BlackElo "2290"]
[PlyCount "61"]
[EventDate "1992.10.??"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "ARG"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 0-0 6. Be2 e5 7. Be3 h6 8. 0-0 Ng4 9. Bc1 Nc6 10. d5 Ne7 11. Nd2 f5 12. Bxg4 fxg4 13. b4 g5 14. c5 Ng6 15. Nc4 Nh4 16. Be3 Rf6 17. Rc1 Qe8 18. Ne2 Qg6 19. Ng3 h5 20. b5 b6 21. cxd6 cxd6 22. Bxb6 Bd7 23. a4 axb6 24. Nxb6 Ra7 25. Nc8 Bxc8 26. Rxc8+ Rf8 27. Qc2 Qf7 28. b6 Ra6 29. Rb1 Qb7 30. Rxf8+ Bxf8 31. Qc7 1-0

[Event "Wch U20"]
[White "Thallinger, Guenther"]
[Black "Sosa, Leonardo"]
[Site "Buenos Aires"]
[Round "?"]
[Result "0-1"]
[Date "1992.??.??"]
[ECO "B22"]
[WhiteElo "2195"]
[BlackElo "2245"]
[PlyCount "71"]
[EventDate "1992.10.??"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "ARG"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. Nf3 Nc6 5. d4 cxd4 6. cxd4 d6 7. Bc4 Nb6 8. Bb5 dxe5 9. Nxe5 Bd7 10. Bxc6 Bxc6 11. Nxc6 bxc6 12. 0-0 e6 13. Nc3 Be7 14. Qg4 0-0 15. Rd1 Nd5 16. Rd3 Nf6 17. Qf3 Qb6 18. b3 Rad8 19. Na4 Qa5 20. Bb2 Nd5 21. a3 Bd6 22. g3 Qb5 23. Rc1 Qb7 24. Nc5 Qe7 25. Rd2 Rb8 26. Rdc2 Rb5 27. b4 a5 28. Ne4 axb4 29. Nxd6 Qxd6 30. Rxc6 Qb8 31. axb4 Nxb4 32. R6c4 Nd5 33. Qa3 Rxb2 34. Rc8 Rxc8 35. Qxb2 Rxc1+ 36. Qxc1 0-1

[Event "Wch U20"]
[White "Torman, Eric"]
[Black "Sosa, Leonardo"]
[Site "Buenos Aires"]
[Round "?"]
[Result "1-0"]
[Date "1992.??.??"]
[ECO "A52"]
[WhiteElo "2350"]
[BlackElo "2245"]
[PlyCount "49"]
[EventDate "1992.10.??"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "ARG"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. e4 Nxe5 5. f4 Nec6 6. Be3 Bb4+ 7. Nc3 Bxc3+ 8. bxc3 Qe7 9. Bd3 Na6 10. Nf3 Nc5 11. 0-0 d6 12. Bxc5 dxc5 13. e5 Bd7 14. Be4 Na5 15. e6 fxe6 16. Rb1 0-0-0 17. Bxb7+ Nxb7 18. Ne5 Be8 19. Qb3 c6 20. Rb2 Rf8 21. Qa4 Rf5 22. Qxa7 Qc7 23. Rfb1 Rxe5 24. fxe5 Na5 25. Rb8+ 1-0

[Event "Wch U20"]
[White "Vescovi, Giovanni P"]
[Black "Sosa, Leonardo"]
[Site "Buenos Aires"]
[Round "?"]
[Result "1-0"]
[Date "1992.??.??"]
[ECO "E60"]
[WhiteElo "2340"]
[BlackElo "2245"]
[PlyCount "53"]
[EventDate "1992.10.??"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "ARG"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 g6 3. d4 Bg7 4. Nf3 0-0 5. e3 d6 6. Be2 Nbd7 7. b3 e5 8. Bb2 Re8 9. Qc2 exd4 10. exd4 Nh5 11. Qd2 f5 12. 0-0 Ndf6 13. Ng5 h6 14. Nh3 Be6 15. Bf3 Rb8 16. Rfe1 Bf7 17. Nf4 Nxf4 18. Qxf4 Qd7 19. h4 Nh7 20. Bd5 g5 21. hxg5 hxg5 22. Qf3 Bxd4 23. Bxb7 g4 24. Rxe8+ Bxe8 25. Qd5+ Qf7 26. Qxd4 Rxb7 27. Nd5 1-0

[Event "Buenos Aires GP II"]
[White "Zucotti, Eduardo"]
[Black "Sosa, Leonardo"]
[Site "Buenos Aires"]
[Round "4"]
[Result "1-0"]
[Date "1992.??.??"]
[ECO "A00"]
[WhiteElo "2225"]
[PlyCount "75"]
[EventDate "1992.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. b4 e5 2. a3 d5 3. Bb2 f6 4. c4 Be6 5. cxd5 Bxd5 6. Nc3 Be6 7. e3 Nh6 8. Nf3 Nf7 9. d4 Nd7 10. d5 Bg4 11. Qa4 Nd6 12. Nd2 Be7 13. Bd3 0-0 14. Qc2 f5 15. h3 Bh5 16. g4 e4 17. Be2 fxg4 18. Bxg4 Bg6 19. Ndxe4 Bh4 20. Be6+ Kh8 21. Rg1 Nf6 22. Rg2 Nfxe4 23. Nxe4 Bxe4 24. Qxe4 Ne8 25. 0-0-0 Bf6 26. f4 Bxb2+ 27. Kxb2 Qf6+ 28. Qd4 Nd6 29. Kb3 Qe7 30. Rdg1 Ne8 31. f5 b6 32. e4 Rd8 33. e5 c5 34. Qg4 Rxd5 35. Bxd5 Qxe5 36. Be6 Qe3+ 37. Ka2 cxb4 38. Qxb4 1-0

[Event "Olympiad-27"]
[White "El Khechen, Nabil"]
[Black "Sosa, Leonardo"]
[Site "Dubai"]
[Round "13"]
[Result "1-0"]
[Date "1986.11.29"]
[ECO "E10"]
[PlyCount "83"]
[EventDate "1986.11.15"]
[EventType "team-swiss"]
[EventRounds "14"]
[EventCountry "UAE"]
[SourceTitle "TD"]
[Source "ChessBase"]
[SourceDate "1994.03.01"]
[SourceVersion "1"]
[SourceVersionDate "1994.03.01"]
[SourceQuality "1"]
[WhiteTeam "Lebanon"]
[BlackTeam "Puerto Rico"]
[WhiteTeamCountry "LBN"]
[BlackTeamCountry "PUR"]

1. d4 Nf6 2. Nf3 c5 3. d5 e6 4. c4 b5 5. Bg5 h6 6. Bxf6 Qxf6 7. Nc3 b4 8. Nb5 Kd8 9. a3 a6 10. axb4 Bb7 11. Nc3 cxb4 12. Ne4 Qf4 13. Qd4 f5 14. Nc5 Qxd4 15. Nxb7+ Kc7 16. Nxd4 Kxb7 17. dxe6 dxe6 18. g3 Kb6 19. Nxe6 Ra7 20. Nf4 Bd6 21. Nd5+ Kc5 22. b3 a5 23. Ra4 Nc6 24. e3 Be5 25. f4 Bb2 26. Bd3 g6 27. Kf2 Ba3 28. h4 h5 29. Rd1 Re8 30. Be2 Re6 31. Nc3 bxc3 32. Rd5+ Kb6 33. Rxa3 Rae7 34. c5+ Kc7 35. Rd3 c2 36. Ra1 Nb4 37. Rc3 Nd5 38. Rxc2 Nxe3 39. Rd2 Ng4+ 40. Bxg4 hxg4 41. Rxa5 Re3 42. Ra7+ 1-0

[Event "Olympiad-27"]
[White "Shum, Ming Yip"]
[Black "Sosa, Leonardo"]
[Site "Dubai"]
[Round "11"]
[Result "1/2-1/2"]
[Date "1986.11.27"]
[ECO "B08"]
[PlyCount "93"]
[EventDate "1986.11.15"]
[EventType "team-swiss"]
[EventRounds "14"]
[EventCountry "UAE"]
[SourceTitle "TD"]
[Source "ChessBase"]
[SourceDate "1994.03.01"]
[SourceVersion "1"]
[SourceVersionDate "1994.03.01"]
[SourceQuality "1"]
[WhiteTeam "Hong Kong"]
[BlackTeam "Puerto Rico"]
[WhiteTeamCountry "HKG"]
[BlackTeamCountry "PUR"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Nf3 Bg7 5. Be2 0-0 6. 0-0 Bg4 7. h3 Bxf3 8. Bxf3 Nc6 9. Be3 e5 10. d5 Ne7 11. Qd2 Nd7 12. Bg5 f5 13. exf5 gxf5 14. Rad1 Nf6 15. Bh6 Rf7 16. Qg5 Qf8 17. g3 Kh8 18. Bxg7+ Rxg7 19. Qd2 Qf7 20. Kh2 a6 21. a4 Rag8 22. Rg1 Ng6 23. Ne2 e4 24. Bh1 Ne5 25. Nf4 Re8 26. Qe2 Rgg8 27. b3 Ng6 28. Nxg6+ Rxg6 29. Qd2 Re5 30. c4 Rg8 31. Qh6 Qg7 32. Qxg7+ Rxg7 33. Rge1 a5 34. Rb1 Nd7 35. g4 Nc5 36. gxf5 Rxf5 37. Re2 Rgf7 38. Kg1 Rg5+ 39. Kh2 Rgf5 40. Kg1 Rg7+ 41. Kh2 b6 42. Bxe4 Nxe4 43. Rxe4 Rxf2+ 44. Kh1 Rg3 45. Re8+ Kg7 46. Rg1 Kf7 47. Rxg3 1/2-1/2

[Event "Olympiad-27"]
[White "Sosa, Leonardo"]
[Black "Slimani, Abdelhamid"]
[Site "Dubai"]
[Round "8"]
[Result "0-1"]
[Date "1986.11.23"]
[ECO "C03"]
[BlackElo "2205"]
[PlyCount "66"]
[EventDate "1986.11.15"]
[EventType "team-swiss"]
[EventRounds "14"]
[EventCountry "UAE"]
[SourceTitle "TD"]
[Source "ChessBase"]
[SourceDate "1994.03.01"]
[SourceVersion "1"]
[SourceVersionDate "1994.03.01"]
[SourceQuality "1"]
[WhiteTeam "Puerto Rico"]
[BlackTeam "Algeria"]
[WhiteTeamCountry "PUR"]
[BlackTeamCountry "ALG"]

1. e4 e6 2. d4 b6 3. Bd3 Bb7 4. Nf3 Nf6 5. Nbd2 d5 6. e5 Ne4 7. Qe2 Nxd2 8. Bxd2 c5 9. c3 h6 10. 0-0 Nc6 11. dxc5 Bxc5 12. b4 Be7 13. Nd4 Qc7 14. Rfe1 h5 15. f4 g6 16. Qf3 a6 17. Qh3 Kd7 18. a4 Rag8 19. Qe3 Bh4 20. g3 Be7 21. h4 Ra8 22. Kh2 Bf8 23. Bf1 Ne7 24. Rac1 Ke8 25. c4 dxc4 26. Bxc4 Qd7 27. Nb5 axb5 28. Bxb5 Bc6 29. Rxc6 Nxc6 30. Rc1 Rc8 31. Qc3 Kd8 32. Bxc6 Rxc6 33. Qxc6 Qxd2+ 0-1

[Event "Olympiad-27"]
[White "O'Shaughnessy, Conor"]
[Black "Sosa, Leonardo"]
[Site "Dubai"]
[Round "7"]
[Result "1-0"]
[Date "1986.11.22"]
[ECO "B09"]
[PlyCount "51"]
[EventDate "1986.11.15"]
[EventType "team-swiss"]
[EventRounds "14"]
[EventCountry "UAE"]
[SourceTitle "TD"]
[Source "ChessBase"]
[SourceDate "1994.03.01"]
[SourceVersion "1"]
[SourceVersionDate "1994.03.01"]
[SourceQuality "1"]
[WhiteTeam "Ireland"]
[BlackTeam "Puerto Rico"]
[WhiteTeamCountry "IRL"]
[BlackTeamCountry "PUR"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. f4 Bg7 5. Nf3 0-0 6. Be3 b6 7. e5 Ng4 8. Bg1 Bb7 9. Qe2 Ba6 10. Qe4 Bxf1 11. Kxf1 Nd7 12. h3 Nh6 13. g4 c5 14. dxc5 dxe5 15. Rd1 Qc8 16. cxb6 Nxb6 17. fxe5 f5 18. exf6 Rxf6 19. Bxb6 axb6 20. Kg2 Nf7 21. Rhe1 e6 22. a3 Ra5 23. Re3 Qb8 24. Rd7 Ne5 25. Nxe5 Rxe5 26. Rxg7+ 1-0

[Event "Olympiad-27"]
[White "Abdullah, Mashaal"]
[Black "Sosa, Leonardo"]
[Site "Dubai"]
[Round "4"]
[Result "1/2-1/2"]
[Date "1986.11.18"]
[ECO "B07"]
[PlyCount "81"]
[EventDate "1986.11.15"]
[EventType "team-swiss"]
[EventRounds "14"]
[EventCountry "UAE"]
[SourceTitle "TD"]
[Source "ChessBase"]
[SourceDate "1994.03.01"]
[SourceVersion "1"]
[SourceVersionDate "1994.03.01"]
[SourceQuality "1"]
[WhiteTeam "United Arab Emirates"]
[BlackTeam "Puerto Rico"]
[WhiteTeamCountry "UAE"]
[BlackTeamCountry "PUR"]

1. e4 d6 2. d4 g6 3. Nc3 Nf6 4. g3 Bg7 5. Bg2 0-0 6. h3 Nbd7 7. Nge2 e5 8. Be3 c6 9. a4 Qc7 10. 0-0 a5 11. Qd2 Nb6 12. b3 Be6 13. f4 Rad8 14. Rad1 exd4 15. Bxd4 Bc8 16. g4 d5 17. Be5 Qe7 18. Qe3 Nbd7 19. Bc7 Rde8 20. e5 Nc5 21. Bd6 Qxd6 22. Qg3 Nfe4 23. Bxe4 Nxe4 24. Nxe4 Qb4 25. Nd6 Re6 26. Nd4 Qc5 27. Qf2 Rxd6 28. exd6 Qxd6 29. Rfe1 Bd7 30. Ne2 Bf6 31. c4 Qb4 32. Qg3 Qe7 33. g5 Bg7 34. cxd5 cxd5 35. Rxd5 Bc6 36. Rdd1 Qe4 37. Kh2 Qc2 38. Qd3 Qc5 39. Qg3 Qc2 40. Qd3 Qc5 41. Qg3 1/2-1/2

[Event "Olympiad-27"]
[White "Franklyn, Gibson"]
[Black "Sosa, Leonardo"]
[Site "Dubai"]
[Round "2"]
[Result "0-1"]
[Date "1986.11.16"]
[ECO "B07"]
[PlyCount "78"]
[EventDate "1986.11.15"]
[EventType "team-swiss"]
[EventRounds "14"]
[EventCountry "UAE"]
[SourceTitle "TD"]
[Source "ChessBase"]
[SourceDate "1994.03.01"]
[SourceVersion "1"]
[SourceVersionDate "1994.03.01"]
[SourceQuality "1"]
[WhiteTeam "Bahamas"]
[BlackTeam "Puerto Rico"]
[WhiteTeamCountry "BAH"]
[BlackTeamCountry "PUR"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. f3 c6 5. Be3 Nbd7 6. Qd2 b5 7. 0-0-0 b4 8. Nb1 a5 9. g4 Qb6 10. Ne2 Ba6 11. Ng3 h5 12. g5 Nh7 13. h4 Bg7 14. Bh3 a4 15. e5 Nhf8 16. exd6 exd6 17. Ne4 d5 18. Nd6+ Ke7 19. Bf4 Ne6 20. Rhe1 Ndf8 21. Qe3 Bc8 22. Nxc8+ Rxc8 23. Be5 b3 24. axb3 Bxe5 25. Qxe5 Nd7 26. Qe3 c5 27. Nc3 Qc6 28. Bxe6 fxe6 29. Qxe6+ Qxe6 30. Nxd5+ Kf7 31. Rxe6 Kxe6 32. dxc5 Nxc5 33. Nf4+ Kf5 34. Nd5 Ke6 35. Nf4+ Kf7 36. b4 Ne6 37. Nd3 Rhd8 38. Re1 Rd6 39. Rf1 Nd4 0-1

[Event "Olympiad-24"]
[White "Stull, Norbert"]
[Black "Sosa, Leonardo"]
[Site "Valetta"]
[Round "9"]
[Result "1-0"]
[Date "1980.11.29"]
[ECO "B39"]
[WhiteElo "2270"]
[PlyCount "67"]
[EventDate "1980.11.20"]
[EventType "team-swiss"]
[EventRounds "14"]
[EventCountry "MLT"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]
[WhiteTeam "Luxembourg"]
[BlackTeam "Puerto Rico"]
[WhiteTeamCountry "LUX"]
[BlackTeamCountry "PUR"]

1. c4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. e4 Bg7 7. Be3 Ng4 8. Qxg4 Nxd4 9. Qd1 Ne6 10. Qd2 Qa5 11. Rc1 g5 12. Be2 Be5 13. g3 b6 14. Qd5 Qxd5 15. cxd5 Nc5 16. f3 h6 17. Kf2 Kf8 18. b4 Na6 19. a3 Kg7 20. Nb5 Bb7 21. Rc2 Rac8 22. Rhc1 Bb8 23. Bd4+ f6 24. Be3 Rxc2 25. Rxc2 Rc8 26. Rxc8 Bxc8 27. Nd4 Be5 28. Nb5 Bb8 29. f4 Bb7 30. Nd4 e6 31. dxe6 dxe6 32. Nxe6+ Kg8 33. Nd8 Bxe4 34. Bxa6 1-0

