[Event "Judewicz Memorial U2200 sf 6th"]
[Site "Mar del Plata"]
[Date "2019.09.20"]
[Round "2.8"]
[White "Alfaro, Hector Luis"]
[Black "Leon, Mario"]
[Result "1-0"]
[ECO "C01"]
[WhiteElo "1920"]
[BlackElo "1780"]
[PlyCount "91"]
[EventDate "2019.09.20"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "ARG"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Nf3 a6 5. Bd3 Nf6 6. 0-0 Be7 7. c4 c6 8. Nc3 0-0 9. Bg5 Bg4 10. Re1 Nbd7 11. cxd5 cxd5 12. Rc1 b5 13. a3 Nb6 14. Bb1 Bh5 15. Qd3 Bg6 16. Qe2 Re8 17. Bxg6 hxg6 18. Ne5 Bd6 19. Qf3 Be7 20. Nc6 Qd6 21. Ne5 Rad8 22. Bf4 Nh5 23. Nxf7 Qxf4 24. Nxd8 Qxf3 25. gxf3 Nf4 26. Nc6 Kf7 27. Rxe7+ Rxe7 28. Nxe7 Kxe7 29. b3 Kd6 30. Kf1 Nd7 31. Ne2 Ne6 32. Rc8 Nb6 33. Rb8 Kc7 34. Rg8 a5 35. Ke1 a4 36. bxa4 bxa4 37. Kd1 Nc4 38. Re8 Kd6 39. Ra8 Kc6 40. Kc1 Nb6 41. Rg8 Nc4 42. Nc3 Nxa3 43. Nxa4 Kb5 44. Nb2 Nxd4 45. Rxg7 Nxf3 46. Rxg6 1-0

[Event "Rio Gallegos op"]
[Site "Rio Gallegos"]
[Date "2019.06.23"]
[Round "5.1"]
[White "Campeon, Matias"]
[Black "Leon, Mario"]
[Result "1-0"]
[ECO "A02"]
[WhiteElo "2020"]
[BlackElo "1780"]
[PlyCount "47"]
[EventDate "2019.06.09"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "ARG"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. f4 e5 2. fxe5 d6 3. exd6 Bxd6 4. Nf3 g5 5. g3 g4 6. Nh4 Ne7 7. d4 Ng6 8. Nxg6 hxg6 9. Qd3 Be6 10. e4 Nc6 11. c3 Qe7 12. Bg2 Rh5 13. Bf4 0-0-0 14. Nd2 Bxf4 15. gxf4 Rdh8 16. 0-0-0 Bxa2 17. d5 Rd8 18. Qc2 f5 19. dxc6 Bf7 20. cxb7+ Kb8 21. e5 Rhh8 22. Nb3 Qe6 23. Nd4 Rd5 24. Nxe6 1-0

[Event "Rio Gallegos op"]
[Site "Rio Gallegos"]
[Date "2019.06.22"]
[Round "4.3"]
[White "Fernandez, Leandro Daniel"]
[Black "Leon, Mario"]
[Result "0-1"]
[ECO "D06"]
[WhiteElo "1646"]
[BlackElo "1780"]
[PlyCount "116"]
[EventDate "2019.06.09"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "ARG"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 d5 2. c4 c5 3. cxd5 Qxd5 4. Nc3 Qxd4 5. Qxd4 cxd4 6. Nb5 Na6 7. Bf4 Bd7 8. Nxd4 f6 9. Bd2 e5 10. Nc2 Rc8 11. Rc1 Bb4 12. e4 Bxd2+ 13. Kxd2 Nc5 14. f3 Ne7 15. Ne2 0-0 16. Nc3 a6 17. Bc4+ Kh8 18. Ne3 b5 19. Bd5 b4 20. Nb1 Nxd5 21. Nxd5 Rfd8 22. Ke3 Be6 23. Nxb4 a5 24. Nd5 Bxd5 25. exd5 Rxd5 26. Rhd1 Rxd1 27. Rxd1 h5 28. Rc1 Rc7 29. Nd2 Ne6 30. Rxc7 Nxc7 31. Nc4 a4 32. Nb6 a3 33. bxa3 Kg8 34. a4 Kf7 35. h3 Ke6 36. g4 hxg4 37. hxg4 Kd6 38. f4 exf4+ 39. Kxf4 g6 40. g5 Ne6+ 41. Kg4 Nxg5 42. a3 Ne6 43. Nc4+ Kd5 44. Ne3+ Kd4 45. Nf5+ Ke5 46. Ne7 f5+ 47. Kf3 g5 48. a5 Nc7 49. Nc6+ Kf6 50. Nb4 g4+ 51. Kf4 Ne6+ 52. Kg3 Kg5 53. Nd5 f4+ 54. Kg2 f3+ 55. Kg3 Nc5 56. Nc7 Ne4+ 57. Kh2 g3+ 58. Kg1 Nd2 0-1

[Event "Rio Gallegos op"]
[Site "Rio Gallegos"]
[Date "2019.06.16"]
[Round "3.3"]
[White "Leon, Mario"]
[Black "Ocampo, Jorge"]
[Result "1-0"]
[ECO "A43"]
[WhiteElo "1780"]
[PlyCount "33"]
[EventDate "2019.06.09"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "ARG"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 e6 2. d4 c5 3. d5 exd5 4. exd5 Nf6 5. d6 Ne4 6. Qe2 Bxd6 7. Qxe4+ Qe7 8. Bd3 Qxe4+ 9. Bxe4 0-0 10. Be3 Be7 11. Nc3 d6 12. Rd1 f5 13. Bd5+ Kh8 14. Nf3 Nd7 15. 0-0 Nf6 16. a3 f4 17. Bxf4 1-0

[Event "Rio Gallegos op"]
[Site "Rio Gallegos"]
[Date "2019.06.15"]
[Round "2.2"]
[White "Turner, Mauro"]
[Black "Leon, Mario"]
[Result "1-0"]
[ECO "B12"]
[WhiteElo "1835"]
[BlackElo "1780"]
[PlyCount "71"]
[EventDate "2019.06.09"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "ARG"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nf3 e6 5. Be2 Nd7 6. 0-0 Ne7 7. h3 h6 8. Nbd2 g5 9. Nb3 Nb6 10. Nc5 Qc7 11. b3 Nec8 12. Nd3 Be7 13. a4 a5 14. Be3 Na7 15. Qd2 Nd7 16. c4 0-0 17. h4 f6 18. exf6 Nxf6 19. hxg5 Ne4 20. Qc1 hxg5 21. Nxg5 Kg7 22. Nxe4 dxe4 23. Bh6+ Kh7 24. Bxf8 Rxf8 25. Ne5 c5 26. Qe3 Bf6 27. f4 exf3 28. Nxf3 cxd4 29. Qd2 d3 30. Bxd3 Qb6+ 31. Kh1 Bxa1 32. Rxa1 Rf6 33. Bxf5+ exf5 34. Qd7+ Kg8 35. Re1 Rf8 36. Re6 1-0

[Event "Rio Gallegos op"]
[Site "Rio Gallegos"]
[Date "2019.06.09"]
[Round "1.3"]
[White "Leon, Mario"]
[Black "Jotayan, Gaston Alejandro"]
[Result "1-0"]
[ECO "A35"]
[WhiteElo "1780"]
[PlyCount "77"]
[EventDate "2019.06.09"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "ARG"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. c4 c5 2. Nc3 g6 3. Nf3 Bg7 4. e3 Nc6 5. Be2 e5 6. 0-0 Nge7 7. Nb5 d6 8. d4 a6 9. d5 axb5 10. dxc6 Nxc6 11. cxb5 Ne7 12. e4 0-0 13. Bc4 h6 14. Qb3 Bg4 15. Rd1 Nc8 16. Bd5 Rb8 17. h3 Bxf3 18. Qxf3 Nb6 19. Be3 Nxd5 20. Rxd5 Qe7 21. Qd1 Rbd8 22. Qd2 Kh7 23. Rd1 f5 24. Bxc5 Qh4 25. exf5 Rxf5 26. Rxd6 Rxd6 27. Qxd6 Qf6 28. a4 Qxd6 29. Rxd6 e4 30. b4 Bf8 31. Rd7+ Kg8 32. Bxf8 Kxf8 33. Rxb7 Rd5 34. a5 Rd1+ 35. Kh2 Rd2 36. Kg3 g5 37. a6 Rd3+ 38. Kh2 Rd2 39. a7 1-0

[Event "Rio Gallegos op"]
[Site "Rio Gallegos"]
[Date "2018.09.16"]
[Round "5.3"]
[White "Marginet, Ricardo"]
[Black "Leon, Mario"]
[Result "1-0"]
[ECO "A93"]
[WhiteElo "2083"]
[BlackElo "1870"]
[PlyCount "77"]
[EventDate "2018.09.07"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "ARG"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. c4 Nc6 2. d4 e6 3. Nf3 d5 4. g3 Nf6 5. Bg2 Be7 6. 0-0 0-0 7. b3 Ne4 8. Bb2 f5 9. Nc3 a6 10. Rc1 Bf6 11. e3 Ne7 12. c5 Qe8 13. Ne2 g5 14. Ne5 Bxe5 15. dxe5 g4 16. Bxe4 dxe4 17. Nf4 Bd7 18. Qc2 Rd8 19. Rfd1 c6 20. Rd6 Nd5 21. Rd1 h5 22. a3 Kg7 23. Qd2 Kh6 24. Nxd5 cxd5 25. Qxd5 Rf7 26. Qd4 Kg5 27. Bc3 h4 28. Ba5 hxg3 29. Bxd8+ Qxd8 30. fxg3 Qc8 31. Rxd7 Rxd7 32. Qxd7 Qxc5 33. Qd4 Qxa3 34. Qc3 Qa2 35. b4 Qe2 36. Qd2 Qb5 37. Qd8+ Kh5 38. Rd7 Qxe5 39. Rh7+ 1-0

[Event "Rio Gallegos op"]
[Site "Rio Gallegos"]
[Date "2018.09.15"]
[Round "4.2"]
[White "Leon, Mario"]
[Black "Turner, Mauro"]
[Result "0-1"]
[ECO "D30"]
[WhiteElo "1870"]
[BlackElo "1835"]
[PlyCount "50"]
[EventDate "2018.09.07"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "ARG"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. Nf3 d5 2. d4 Nf6 3. c4 e6 4. Bf4 Be7 5. e3 0-0 6. Be2 dxc4 7. Bxc4 c5 8. 0-0 a6 9. a3 b5 10. Ba2 Bb7 11. Nbd2 cxd4 12. exd4 Nc6 13. Nb3 Qb6 14. Nc5 Rfd8 15. b4 Rac8 16. Qd3 Ba8 17. Rad1 a5 18. Qb3 Nd5 19. Bd2 axb4 20. Bxb4 Nxd4 21. Rxd4 Bxc5 22. Bxc5 Qxc5 23. Rfd1 Re8 24. Ne5 Nc3 25. Nd3 Qg5 0-1

[Event "Rio Gallegos op"]
[Site "Rio Gallegos"]
[Date "2018.09.09"]
[Round "3.1"]
[White "Diaz, Walter"]
[Black "Leon, Mario"]
[Result "1-0"]
[ECO "A03"]
[WhiteElo "2132"]
[BlackElo "1870"]
[PlyCount "53"]
[EventDate "2018.09.07"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "ARG"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. f4 d5 2. Nf3 Nf6 3. e3 Bf5 4. b3 e6 5. Bb2 Be7 6. Be2 Nbd7 7. 0-0 c5 8. Ne5 Nxe5 9. Bxe5 Nd7 10. Bxg7 Rg8 11. Bb2 Bf6 12. Bxf6 Qxf6 13. Na3 Qg6 14. Bf3 Nf6 15. Qe2 a6 16. d3 Kf8 17. Rae1 Rd8 18. e4 dxe4 19. dxe4 Bg4 20. Nc4 Bxf3 21. Qxf3 Rd4 22. f5 exf5 23. exf5 Qg5 24. Qxb7 Ne4 25. Ne3 Nd2 26. f6 Re4 27. Qb8+ 1-0

[Event "Rio Gallegos op"]
[Site "Rio Gallegos"]
[Date "2018.09.08"]
[Round "2.1"]
[White "Leon, Mario"]
[Black "Diaz, Julio Cesar"]
[Result "1-0"]
[ECO "D30"]
[WhiteElo "1870"]
[BlackElo "1963"]
[PlyCount "45"]
[EventDate "2018.09.07"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "ARG"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. Bf4 Be7 5. e3 0-0 6. Be2 dxc4 7. Bxc4 Nbd7 8. Nbd2 c6 9. h3 h6 10. g4 Nh7 11. Qc2 Re8 12. h4 Ndf8 13. g5 f6 14. Bd3 e5 15. dxe5 fxe5 16. Nxe5 Bd6 17. Nef3 Bxf4 18. Qc4+ Kh8 19. Qxf4 Qb6 20. b3 Re6 21. Nd4 Ng6 22. Bxg6 Rxg6 23. Nf5 1-0

[Event "Rio Gallegos op"]
[Site "Rio Gallegos"]
[Date "2018.09.07"]
[Round "1.3"]
[White "Fernandez, Leandro Daniel"]
[Black "Leon, Mario"]
[Result "0-1"]
[ECO "A80"]
[WhiteElo "1652"]
[BlackElo "1870"]
[PlyCount "54"]
[EventDate "2018.09.07"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "ARG"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 f5 2. Nc3 Nf6 3. Bg5 Ne4 4. Nxe4 fxe4 5. e3 d5 6. c4 c6 7. Qa4 Nd7 8. cxd5 Nb6 9. Qb4 Qxd5 10. Qc5 e6 11. Qxd5 Bb4+ 12. Kd1 exd5 13. f3 0-0 14. a3 Bd6 15. a4 a5 16. b3 Be6 17. Bh4 Nd7 18. Kc2 c5 19. fxe4 cxd4 20. exd5 Rac8+ 21. Bc4 Bxd5 22. Kd3 Bxc4+ 23. bxc4 Ne5+ 24. Kxd4 Rxc4+ 25. Kd5 Rxh4 26. Kxd6 Nc4+ 27. Kc5 Rf5# 0-1

[Event "Mar del Plata op 42nd"]
[Site "Mar del Plata"]
[Date "2011.04.17"]
[Round "3"]
[White "Tobares, Leandro"]
[Black "Leon, Mario"]
[Result "1-0"]
[ECO "A84"]
[WhiteElo "2229"]
[BlackElo "1900"]
[PlyCount "73"]
[EventDate "2011.04.16"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nc3 e6 4. e3 f5 5. g4 Be7 6. gxf5 exf5 7. cxd5 cxd5 8. Qb3 Nf6 9. Bg2 Be6 10. Nh3 Ne4 11. Qxb7 Nd7 12. Nf4 Bf7 13. Nfxd5 0-0 14. 0-0 Bd6 15. f4 Rb8 16. Qa6 Ndf6 17. Nxf6+ Nxf6 18. Qxa7 Re8 19. Qa6 Qc7 20. d5 Rb6 21. Qd3 Bg6 22. Nb5 Qc5 23. a4 Ne4 24. b4 Qxb4 25. Ba3 Qa5 26. Bxe4 fxe4 27. Qc3 Rxb5 28. Qxa5 Rxa5 29. Bxd6 Bh5 30. Rfc1 Bf3 31. Be5 Rxd5 32. Rc7 Re6 33. Rxg7+ Kf8 34. Rg5 Rd2 35. Rb1 Ra6 36. Rb8+ Kf7 37. Rg7+ 1-0

[Event "Mar del Plata op 40th"]
[Site "Mar del Plata"]
[Date "2009.04.06"]
[Round "3"]
[White "Gallego, Gonzalo"]
[Black "Leon, Mario"]
[Result "1-0"]
[ECO "B30"]
[WhiteElo "2177"]
[BlackElo "1909"]
[PlyCount "101"]
[EventDate "2009.04.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "CBM 129 Extra"]
[Source "ChessBase"]
[SourceDate "2009.05.05"]
[SourceVersion "2"]
[SourceVersionDate "2009.05.20"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. d3 Bg4 6. Be3 e5 7. Nbd2 Nf6 8. h3 Bxf3 9. Nxf3 Bd6 10. 0-0 0-0 11. Nh4 g6 12. Bg5 Be7 13. Nf3 Qc7 14. Nd2 Nh5 15. Bh6 Rfe8 16. Nc4 Bf8 17. Bd2 Bg7 18. Qg4 b5 19. Ne3 Nf6 20. Qh4 Rad8 21. a4 Qb7 22. b3 bxa4 23. Rxa4 Rd4 24. Nc4 Nh5 25. Be3 Rd7 26. Bxc5 Bf8 27. Bxf8 Kxf8 28. Rfa1 Kg8 29. Rxa6 Qb4 30. Qg4 Rde7 31. Qd1 Re6 32. Qd2 Qe7 33. Ra7 Qh4 34. Qe3 Nf4 35. Kh2 Rf6 36. Qg3 Qh6 37. Ne3 Qg7 38. Ng4 Rfe6 39. Qf3 h5 40. Ne3 Rf6 41. Qd1 Qh6 42. R7a6 Nxh3 43. Kxh3 Rxf2 44. Nf1 Qf4 45. Ng3 Kg7 46. c3 Rh8 47. R6a2 h4 48. Nh1 Qe3+ 49. Kh2 h3 50. Nxf2 Qf4+ 51. g3 1-0

[Event "Mar del Plata op 40th"]
[Site "Mar del Plata"]
[Date "2009.04.05"]
[Round "1"]
[White "Van Riemsdijk, Herman Claudius"]
[Black "Leon, Mario"]
[Result "1-0"]
[ECO "C64"]
[WhiteElo "2375"]
[BlackElo "1909"]
[PlyCount "85"]
[EventDate "2009.04.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "CBM 129 Extra"]
[Source "ChessBase"]
[SourceDate "2009.05.05"]
[SourceVersion "2"]
[SourceVersionDate "2009.05.20"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. d3 Nge7 5. c3 a6 6. Ba4 0-0 7. Nbd2 d6 8. Nf1 Bg4 9. h3 Bxf3 10. Qxf3 f5 11. Ne3 f4 12. Ng4 b5 13. Bb3+ Kh8 14. h4 h5 15. Nh2 Qe8 16. Qh3 Ng8 17. Be6 Nd8 18. Bd7 Qe7 19. Nf3 Nf6 20. Bf5 Qe8 21. Ng5 g6 22. Be6 Ba7 23. f3 c6 24. Bb3 d5 25. g3 fxg3 26. Qxg3 dxe4 27. dxe4 c5 28. Bd2 c4 29. Bc2 Nc6 30. 0-0-0 a5 31. Qe1 Rb8 32. Be3 b4 33. Ba4 Bxe3+ 34. Qxe3 bxc3 35. bxc3 Qc8 36. Kc2 Nd8 37. Rb1 Rxb1 38. Rxb1 Ne6 39. Nxe6 Qxe6 40. Qh6+ Kg8 41. Qxg6+ Kh8 42. Qh6+ Kg8 43. Rg1+ 1-0

[Event "Mar del Plata op 39th"]
[Site "Mar del Plata"]
[Date "2008.03.16"]
[Round "3"]
[White "Bianchi, Albino Angel"]
[Black "Leon, Mario"]
[Result "1-0"]
[ECO "C44"]
[WhiteElo "2114"]
[PlyCount "33"]
[EventDate "2008.03.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "CBM 123 Extra"]
[Source "ChessBase"]
[SourceDate "2008.05.06"]
[SourceVersion "1"]
[SourceVersionDate "2008.05.06"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 d6 4. d4 exd4 5. c3 Be6 6. Bxe6 fxe6 7. cxd4 h6 8. 0-0 Qf6 9. d5 Nce7 10. Nc3 c6 11. Nd4 e5 12. Ne6 Rc8 13. f4 Ng6 14. fxe5 Qh4 15. Rxf8+ Nxf8 16. Nxg7+ Kd8 17. Nf5 1-0

