[Event "Pan American-ch U10 Girls"]
[Site "Cali"]
[Date "2011.07.08"]
[Round "9"]
[White "Galaviz Medina, Aioria"]
[Black "Ferreira, Mayra Alejandra"]
[Result "1/2-1/2"]
[ECO "A80"]
[PlyCount "85"]
[EventDate "2011.07.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 143 Extra"]
[Source "ChessBase"]
[SourceDate "2011.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2011.08.29"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 e6 3. e3 f5 4. g3 Nf6 5. Bg2 Bd6 6. 0-0 0-0 7. Ne5 Nbd7 8. f4 b6 9. Nd2 Bb7 10. c3 Qe8 11. b3 Bxe5 12. dxe5 Ng4 13. Qe2 Nc5 14. h3 Nh6 15. Ba3 Qg6 16. Bxc5 bxc5 17. Qf2 Ba6 18. Rfc1 Rab8 19. Rab1 Rfd8 20. Nf3 c4 21. bxc4 Bxc4 22. a3 c5 23. Ng5 Nf7 24. Nxf7 Qxf7 25. Qd2 Qg6 26. Kh2 Qf7 27. Rb2 Rxb2 28. Qxb2 Ba6 29. Bf1 Bxf1 30. Rxf1 Qc7 31. Rb1 Kf8 32. Qb7 Qa5 33. Rb3 c4 34. Qb5 Qxb5 35. Rxb5 Rd7 36. Kg2 Ke7 37. Kf2 Rc7 38. Ke2 Kd7 39. Kd2 Kc8 40. Kc2 Rb7 41. Rb4 a5 42. Rxb7 Kxb7 43. a4 1/2-1/2

[Event "Pan American-ch U10 Girls"]
[Site "Cali"]
[Date "2011.07.07"]
[Round "7"]
[White "Cardenas, Laura"]
[Black "Ferreira, Mayra Alejandra"]
[Result "1/2-1/2"]
[ECO "C02"]
[PlyCount "58"]
[EventDate "2011.07.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 143 Extra"]
[Source "ChessBase"]
[SourceDate "2011.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2011.08.29"]
[SourceQuality "1"]

1. e4 e6 2. d4 c5 3. c3 d5 4. e5 c4 5. Nf3 Nc6 6. Be3 Be7 7. Be2 f6 8. Bf4 Bd7 9. Na3 fxe5 10. Nxe5 Nf6 11. Bg5 Ne4 12. Bxe7 Qxe7 13. Nxd7 Qxd7 14. Qc2 0-0 15. Bxc4 Rxf2 16. Qd3 Rxb2 17. Qe3 Rxg2 18. Bd3 Nf2 19. Kf1 Ng4 20. Qh3 Rf2+ 21. Ke1 Rf4 22. Qxh7+ Kf7 23. Qg6+ Kg8 24. Qh7+ Kf7 25. Qh5+ Kg8 26. Qh7+ Kf7 27. Qh5+ Kg8 28. Qh7+ Kf7 29. Qh5+ Kg8 1/2-1/2

[Event "Pan American-ch U10 Girls"]
[Site "Cali"]
[Date "2011.07.07"]
[Round "8"]
[White "Ferreira, Mayra Alejandra"]
[Black "Mejia, Mariana1111"]
[Result "1/2-1/2"]
[ECO "A41"]
[PlyCount "48"]
[EventDate "2011.07.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 143 Extra"]
[Source "ChessBase"]
[SourceDate "2011.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2011.08.29"]
[SourceQuality "1"]

1. e3 e5 2. c4 d6 3. d4 f6 4. Nc3 Ne7 5. Bd2 Be6 6. Qc2 Ng6 7. Bd3 Bf7 8. 0-0-0 Be7 9. Nge2 Nc6 10. a3 exd4 11. Nxd4 Nxd4 12. exd4 0-0 13. h4 Re8 14. Rde1 c5 15. g4 cxd4 16. Ne4 d5 17. Ng3 Rc8 18. Kb1 dxc4 19. Be4 c3 20. bxc3 Bxa3 21. Bf3 Qb6+ 22. Ka1 d3 23. Qb1 Qxb1+ 24. Kxb1 Rxe1+ 1/2-1/2

[Event "Pan American-ch U10 Girls"]
[Site "Cali"]
[Date "2011.07.06"]
[Round "6"]
[White "Ferreira, Mayra Alejandra"]
[Black "Liu, Jiaxin"]
[Result "1/2-1/2"]
[ECO "A00"]
[PlyCount "17"]
[EventDate "2011.07.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 143 Extra"]
[Source "ChessBase"]
[SourceDate "2011.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2011.08.29"]
[SourceQuality "1"]

1. Nc3 d5 2. e4 d4 3. Nce2 e5 4. Ng3 a6 5. Bc4 Nf6 6. d3 Be7 7. Nf3 Nc6 8. h3 h6 9. Nh2 1/2-1/2

[Event "Pan American-ch U10 Girls"]
[Site "Cali"]
[Date "2011.07.06"]
[Round "5"]
[White "Jimenez Gil, Sofia"]
[Black "Ferreira, Mayra Alejandra"]
[Result "1-0"]
[ECO "C42"]
[PlyCount "55"]
[EventDate "2011.07.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 143 Extra"]
[Source "ChessBase"]
[SourceDate "2011.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2011.08.29"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Nc3 Bb4 4. d3 d6 5. Be2 Nbd7 6. 0-0 Nf8 7. a3 Bxc3 8. bxc3 Ng6 9. Re1 0-0 10. Bb2 Be6 11. c4 Nf4 12. Rb1 h6 13. Bc1 Nxe2+ 14. Qxe2 b6 15. Bb2 Nh7 16. c3 Qf6 17. Qe3 Qg6 18. Rbd1 Nf6 19. Nh4 Qh7 20. Bc1 a6 21. h3 g5 22. Nf3 b5 23. d4 exd4 24. cxd4 Qg7 25. d5 Bd7 26. Qd4 Qg6 27. e5 dxe5 28. Rxe5 1-0

[Event "Pan American-ch U10 Girls"]
[Site "Cali"]
[Date "2011.07.05"]
[Round "4"]
[White "Leon, Elisa"]
[Black "Ferreira, Mayra Alejandra"]
[Result "1/2-1/2"]
[ECO "C10"]
[PlyCount "75"]
[EventDate "2011.07.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 143 Extra"]
[Source "ChessBase"]
[SourceDate "2011.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2011.08.29"]
[SourceQuality "1"]

1. e4 e6 2. d4 c5 3. Nf3 d5 4. Nc3 c4 5. Be2 Nc6 6. Be3 Bd6 7. exd5 exd5 8. Nxd5 Qa5+ 9. Nc3 Bb4 10. Bd2 Bg4 11. d5 Nce7 12. Bxc4 Nf6 13. a3 Bd6 14. 0-0 Qc5 15. Bb5+ Nd7 16. h3 Bf5 17. Be3 Qc7 18. Qd4 0-0 19. Rfe1 Bxc2 20. Rac1 Bg6 21. Ne4 Nf5 22. Rxc7 Nxd4 23. Nxd6 Nxf3+ 24. gxf3 Nf6 25. Rxb7 Nxd5 26. Rxa7 Nxe3 27. Rxe3 Rxa7 28. Re5 Rc7 29. h4 h6 30. Be8 Rc2 31. h5 Bh7 32. Re7 f6 33. Bf7+ Kh8 34. Bb3 Rxb2 35. Nf7+ Kg8 36. Nxh6+ Kh8 37. Nf7+ Kg8 38. Nh6+ 1/2-1/2

[Event "Pan American-ch U10 Girls"]
[Site "Cali"]
[Date "2011.07.04"]
[Round "2"]
[White "Ferreira, Mayra Alejandra"]
[Black "Lopez Sanchez, Anastacia Antonia"]
[Result "1-0"]
[ECO "B18"]
[PlyCount "91"]
[EventDate "2011.07.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 143 Extra"]
[Source "ChessBase"]
[SourceDate "2011.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2011.08.29"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Bf5 5. Nc3 Nf6 6. Nf3 e6 7. Bc4 Bd6 8. 0-0 0-0 9. Bg5 Nbd7 10. Re1 h6 11. Bh4 Bg4 12. Qd3 Qc7 13. h3 Bxf3 14. Qxf3 Qb6 15. Bb3 Bb4 16. Rad1 Rfe8 17. a3 Be7 18. Ne4 Nxe4 19. Bxe7 Rxe7 20. Rxe4 Nf6 21. Ree1 Rae8 22. Qg3 Rd8 23. Qf4 Red7 24. Rd2 Rxd4 25. Rxd4 Rxd4 26. Qb8+ Rd8 27. Qg3 c5 28. Qf4 Qd6 29. Qa4 a6 30. Qh4 Qd4 31. Qxd4 Rxd4 32. Re2 Rd1+ 33. Kh2 Nd5 34. c3 b5 35. Bxd1 Nf4 36. Rd2 Nd5 37. Bc2 g6 38. Be4 Nb6 39. Rd6 Nc4 40. Rxa6 Nxb2 41. Rb6 Nc4 42. Rxb5 Nxa3 43. Rxc5 f5 44. Bd3 Kf7 45. c4 Nxc4 46. Bxc4 1-0

[Event "Pan American-ch U10 Girls"]
[Site "Cali"]
[Date "2011.07.04"]
[Round "3"]
[White "Ferreira, Mayra Alejandra"]
[Black "Ruiz, Mishell"]
[Result "1/2-1/2"]
[ECO "B02"]
[BlackElo "1481"]
[PlyCount "31"]
[EventDate "2011.07.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 143 Extra"]
[Source "ChessBase"]
[SourceDate "2011.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2011.08.29"]
[SourceQuality "1"]

1. Nc3 Nf6 2. e4 Nc6 3. d4 d5 4. exd5 Nxd5 5. Bc4 Nxc3 6. Qf3 e6 7. bxc3 Be7 8. Ne2 Bd7 9. Qg3 Bf6 10. Bf4 Rc8 11. Rb1 Na5 12. Bb3 h5 13. Be5 Nc6 14. Bxf6 Qxf6 15. Qf4 Qg6 16. Qg3 1/2-1/2

[Event "COL-ch U10 Girls"]
[Site "Bogota"]
[Date "2011.06.04"]
[Round "9.3"]
[White "Munoz, Pamela Cristina"]
[Black "Ferreira, Mayra Alejandra"]
[Result "0-1"]
[ECO "C42"]
[WhiteElo "1245"]
[BlackElo "1531"]
[PlyCount "82"]
[EventDate "2011.05.31"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 e5 2. Bc4 Nf6 3. Nf3 Nxe4 4. Nxe5 d5 5. d3 dxc4 6. dxe4 Qxd1+ 7. Kxd1 Be6 8. Ke2 Bd6 9. Nxc4 Bxc4+ 10. Kf3 Nc6 11. b3 Be6 12. Nc3 0-0-0 13. Nd5 Bxd5 14. exd5 Ne5+ 15. Ke4 Ng6 16. Bf4 Bxf4 17. g3 Be5 18. f4 Bxa1 19. Rxa1 Rhe8+ 20. Kd4 c6 21. d6 Rxd6+ 22. Kc3 Re2 23. g4 Rxh2 24. f5 Nf4 25. g5 Rd5 26. Rf1 Rxf5 27. Rxf4 Rxf4 28. Kb2 h5 29. a4 h4 30. b4 h3 31. Kb3 Rg2 32. b5 cxb5 33. axb5 h2 34. c4 h1Q 35. Kb4 b6 36. g6 a5+ 37. Ka4 Rxc4+ 38. Kb3 Rgg4 39. gxf7 Qf3+ 40. Kb2 Rg2+ 41. Ka1 Qf1# 0-1

[Event "COL-ch U10 Girls"]
[Site "Bogota"]
[Date "2011.06.03"]
[Round "8.4"]
[White "Ferreira, Mayra Alejandra"]
[Black "Cayon, Laura Valentina"]
[Result "0-1"]
[ECO "C01"]
[WhiteElo "1531"]
[BlackElo "1394"]
[PlyCount "76"]
[EventDate "2011.05.31"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[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. Bd3 Bd6 5. Qf3 Ne7 6. c3 0-0 7. Ne2 Qd7 8. Bf4 Bxf4 9. Qxf4 Nbc6 10. Nd2 Ng6 11. Qg3 Qg4 12. Qxg4 Bxg4 13. 0-0-0 Rfe8 14. Rhe1 Bxe2 15. Rxe2 Nf4 16. Rxe8+ Rxe8 17. Bf1 Ne2+ 18. Kb1 Nf4 19. g3 Ng6 20. Bg2 Nce7 21. Re1 Kf8 22. Nf3 Nc6 23. Rxe8+ Kxe8 24. h4 h5 25. Bh3 Na5 26. b3 b6 27. Kc2 c5 28. Kb2 Nb7 29. a3 Nd6 30. Ne5 Nxe5 31. dxe5 Ne4 32. f3 Nxg3 33. Kc2 Ke7 34. Kd2 g6 35. Ke3 Nf5+ 36. Kf2 Nxh4 37. Kg3 Nf5+ 38. Kf2 Ke6 0-1

[Event "COL-ch U10 Girls"]
[Site "Bogota"]
[Date "2011.06.02"]
[Round "5.1"]
[White "Ferreira, Mayra Alejandra"]
[Black "Frayle Vela, Maria Isabel"]
[Result "0-1"]
[ECO "D02"]
[WhiteElo "1531"]
[BlackElo "1341"]
[PlyCount "48"]
[EventDate "2011.05.31"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. Nf3 Nc6 2. d4 d5 3. Bf4 Bf5 4. e3 Nf6 5. c3 e6 6. Bd3 Ne4 7. 0-0 Be7 8. Ne5 Nxe5 9. dxe5 0-0 10. Nd2 Qd7 11. Bxe4 dxe4 12. Nc4 Qb5 13. Qb3 Qc6 14. Na5 Qa6 15. Nc4 Rad8 16. Rad1 b5 17. Na3 Bxa3 18. Qxa3 Qb6 19. Qb3 Rxd1 20. Rxd1 Bg4 21. Rd2 f6 22. c4 fxe5 23. Bxe5 Qa5 24. Rd7 Qe1# 0-1

[Event "COL-ch U10 Girls"]
[Site "Bogota"]
[Date "2011.06.02"]
[Round "6.5"]
[White "Ferreira, Mayra Alejandra"]
[Black "Parada Beltran, Laura Valentina"]
[Result "1-0"]
[ECO "C22"]
[WhiteElo "1531"]
[BlackElo "1300"]
[PlyCount "65"]
[EventDate "2011.05.31"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 e5 2. d4 exd4 3. Qxd4 Nc6 4. Qa4 Bb4+ 5. Bd2 Bxd2+ 6. Nxd2 Nf6 7. Ngf3 0-0 8. 0-0-0 d6 9. Bd3 Bd7 10. Qb3 Rb8 11. Qc3 Be6 12. h3 Qd7 13. Rhe1 b6 14. Bb5 a6 15. Bxc6 Qc8 16. Ba4 b5 17. Bb3 d5 18. exd5 Nxd5 19. Bxd5 Bxd5 20. Qe5 Re8 21. Qxd5 Rf8 22. Qh5 Qe6 23. Rxe6 fxe6 24. Ne4 Rfd8 25. Neg5 h6 26. Nxe6 Rd6 27. Qg6 Rxe6 28. Qxe6+ Kf8 29. Re1 g5 30. Qe7+ Kg8 31. Rd1 Kh8 32. Rd7 Rc8 33. Qh7# 1-0

[Event "COL-ch U10 Girls"]
[Site "Bogota"]
[Date "2011.06.01"]
[Round "3.2"]
[White "Ferreira, Mayra Alejandra"]
[Black "Mejia, Mariana1111"]
[Result "0-1"]
[ECO "B32"]
[WhiteElo "1531"]
[BlackElo "1577"]
[PlyCount "54"]
[EventDate "2011.05.31"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 c5 2. d4 e6 3. Nf3 Nc6 4. Bc4 a6 5. Nc3 b5 6. Be2 Bb7 7. Be3 Qb6 8. d5 Nce7 9. 0-0 Nf6 10. d6 Ng6 11. e5 Nd5 12. Qd2 Qc6 13. Rad1 Nxc3 14. Qxc3 Rc8 15. h3 b4 16. Qc4 Nxe5 17. Qf4 Bxd6 18. Qh4 0-0 19. Rfe1 Bb8 20. c3 bxc3 21. bxc3 c4 22. Rb1 Qe4 23. Qxe4 Bxe4 24. Rb4 Bd6 25. Rb6 Rc6 26. Rb2 Rb8 27. Rxb8+ Bxb8 0-1

[Event "COL-ch U10 Girls"]
[Site "Bogota"]
[Date "2011.06.01"]
[Round "4.5"]
[White "Saenz Quintero, Vanessa"]
[Black "Ferreira, Mayra Alejandra"]
[Result "0-1"]
[ECO "C00"]
[WhiteElo "1392"]
[BlackElo "1531"]
[PlyCount "29"]
[EventDate "2011.05.31"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 e6 2. Nc3 d5 3. exd5 exd5 4. Qe2+ Be6 5. d3 Nc6 6. Be3 d4 7. Ne4 dxe3 8. Qxe3 Nb4 9. Qd2 Nf6 10. Nc3 Qd7 11. Nce2 0-0-0 12. g3 Bc5 13. d4 Rhe8 14. Bg2 Bxd4 15. Kd1 0-1

[Event "COL-ch U10 Girls"]
[Site "Bogota"]
[Date "2011.05.31"]
[Round "2.4"]
[White "Cortes, Maria Angelica"]
[Black "Ferreira, Mayra Alejandra"]
[Result "0-1"]
[ECO "B01"]
[WhiteElo "1352"]
[BlackElo "1531"]
[PlyCount "38"]
[EventDate "2011.05.31"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. Bc4 Nc6 5. Nf3 Bg4 6. h3 Qh5 7. d3 0-0-0 8. Bf4 e6 9. Qe2 Nd4 10. Qd1 Nxf3+ 11. gxf3 Bxf3 12. Qd2 Bxh1 13. Qe3 Bb4 14. Qe5 Qxe5+ 15. Bxe5 Nf6 16. 0-0-0 Bc6 17. Bxf6 gxf6 18. a3 Bxc3 19. bxc3 Rhg8 0-1

[Event "COL-ch U10 Girls"]
[Site "Bogota"]
[Date "2011.05.31"]
[Round "1.3"]
[White "Ferreira, Mayra Alejandra"]
[Black "Cardenas, Laura"]
[Result "0-1"]
[ECO "A00"]
[WhiteElo "1531"]
[BlackElo "1389"]
[PlyCount "84"]
[EventDate "2011.05.31"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. Nc3 e5 2. d4 exd4 3. Qxd4 Nc6 4. Qa4 Nf6 5. Bg5 Be7 6. 0-0-0 h6 7. Bh4 d6 8. Nf3 Bd7 9. e3 a6 10. Nd5 b5 11. Nxf6+ Bxf6 12. Qe4+ Be7 13. Bxe7 Qxe7 14. Qxe7+ Nxe7 15. e4 Bc6 16. Re1 0-0 17. Bd3 Ng6 18. h4 Nf4 19. Bf1 Rfe8 20. g3 Ne6 21. Bg2 Nc5 22. Nd2 Re7 23. f3 Rae8 24. g4 g6 25. g5 hxg5 26. hxg5 d5 27. Rh2 Re6 28. Reh1 Kf8 29. Rh8+ Ke7 30. Rxe8+ Kxe8 31. Re1 dxe4 32. fxe4 Kf8 33. Kd1 Kg7 34. c3 Nd3 35. Bh3 Nf2+ 36. Kc2 Nxh3 37. Kd3 Rd6+ 38. Kc2 Nxg5 39. e5 Re6 40. Kd3 Nf3 41. Nxf3 Bxf3 42. Re3 Bd5 0-1

[Event "Antioquia Region-ch U12 Girls"]
[Site "Medellin"]
[Date "2011.03.12"]
[Round "4.3"]
[White "Ferreira, Mayra Alejandra"]
[Black "Bolivar Jaramillo, Luisa Fernan"]
[Result "1-0"]
[ECO "C50"]
[WhiteElo "1536"]
[BlackElo "1320"]
[PlyCount "33"]
[EventDate "2011.03.11"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 h6 4. d4 Nxd4 5. Nxd4 Bb4+ 6. Nc3 Nf6 7. Nf3 0-0 8. 0-0 d5 9. exd5 Bg4 10. Qd3 Nxd5 11. Nxd5 e4 12. Qxe4 f5 13. Qe3 b6 14. Qb3 Qe7 15. Nxe7+ Kh7 16. Qxb4 Rae8 17. Re1 1-0

[Event "Antioquia Region-ch U12 Girls"]
[Site "Medellin"]
[Date "2011.03.12"]
[Round "3.2"]
[White "Ramirez, Manuela"]
[Black "Ferreira, Mayra Alejandra"]
[Result "0-1"]
[ECO "C42"]
[WhiteElo "1467"]
[BlackElo "1536"]
[PlyCount "88"]
[EventDate "2011.03.11"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Nc3 Bb4 4. Bc4 d6 5. d3 Bxc3+ 6. bxc3 Nbd7 7. Be3 Nf8 8. h3 Ng6 9. Qd2 0-0 10. 0-0 Be6 11. Bb3 Bxb3 12. cxb3 Qe7 13. Bg5 Qe6 14. Rfe1 Rad8 15. Qe3 a6 16. d4 Rfe8 17. d5 Qe7 18. c4 c6 19. Rad1 c5 20. Rd2 h6 21. Bxf6 Qxf6 22. Rb2 Nf4 23. Nh2 Qg6 24. Qf3 f5 25. Nf1 Rf8 26. Ng3 fxe4 27. Qxe4 Qxe4 28. Rxe4 b5 29. Ne2 Nxe2+ 30. Rexe2 bxc4 31. bxc4 Rb8 32. a4 a5 33. Kf1 Rb4 34. Rxb4 axb4 35. Rb2 Ra8 36. Ra2 b3 37. Rb2 Rb8 38. a5 Rb4 39. a6 Rxc4 40. Rxb3 Ra4 41. Rb6 c4 42. Rxd6 c3 43. Ke1 Ra1+ 44. Ke2 c2 0-1

[Event "Antioquia Region-ch U12 Girls"]
[Site "Medellin"]
[Date "2011.03.11"]
[Round "1.1"]
[White "Ferreira, Mayra Alejandra"]
[Black "Henao Ortiz, Carolina"]
[Result "0-1"]
[ECO "C54"]
[WhiteElo "1536"]
[BlackElo "1409"]
[PlyCount "75"]
[EventDate "2011.03.11"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. cxd4 Bb4+ 7. Nc3 Nxe4 8. 0-0 Bxc3 9. d5 Na5 10. bxc3 Nxc4 11. Qd4 Nf6 12. Qxc4 0-0 13. Bg5 d6 14. Rfe1 Bf5 15. Qh4 a6 16. Nd4 Bg6 17. Bxf6 Qxf6 18. Qxf6 gxf6 19. Re7 c5 20. dxc6 bxc6 21. Nxc6 Rfe8 22. Rae1 Rxe7 23. Rxe7 Rc8 24. Nd4 Rxc3 25. h3 Ra3 26. Rd7 Rxa2 27. Rxd6 a5 28. Rd5 a4 29. Ra5 Kf8 30. Nb5 Bd3 31. Nc3 Ra1+ 32. Kh2 Bc2 33. Kg3 Ra3 34. Rc5 Rb3 35. Kh2 a3 36. Nd5 a2 37. Ra5 Rb2 38. Ra3 0-1

[Event "Antioquia Region-ch U12 Girls"]
[Site "Medellin"]
[Date "2011.03.11"]
[Round "2.4"]
[White "Toro Castaneda, Elizabeth"]
[Black "Ferreira, Mayra Alejandra"]
[Result "0-1"]
[ECO "C42"]
[WhiteElo "1289"]
[BlackElo "1536"]
[PlyCount "58"]
[EventDate "2011.03.11"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 e5 2. Nc3 Nf6 3. Nf3 Bb4 4. a3 Bxc3 5. dxc3 0-0 6. Nxe5 Re8 7. Nf3 Rxe4+ 8. Be2 Qe7 9. Qd2 Nc6 10. 0-0 Rxe2 11. Qg5 Rxc2 12. Qg3 d6 13. Bh6 Ng4 14. Bg5 Qe6 15. h3 Nf6 16. Bxf6 Qxf6 17. Rae1 Be6 18. Re3 Rxb2 19. Rfe1 Rb3 20. Ng5 Bd7 21. Qh4 Qh6 22. Qe4 g6 23. Qf4 Rf8 24. Re8 Bxe8 25. Rxe8 Rxa3 26. Rxf8+ Qxf8 27. Qh4 Qg7 28. f4 Rxc3 29. Qe1 a5 0-1

[Event "East Region-ch U10"]
[Site "Medellin"]
[Date "2011.03.??"]
[Round "2.2"]
[White "Ferreira, Mayra Alejandra"]
[Black "Marin Cuadros, Sebastian"]
[Result "1-0"]
[ECO "C22"]
[WhiteElo "1536"]
[BlackElo "1430"]
[PlyCount "61"]
[EventDate "2011.03.03"]
[EventType "tourn"]
[EventRounds "6"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 e5 2. d4 exd4 3. Qxd4 Nc6 4. Qe3 d6 5. Bc4 Nf6 6. Nf3 Nb4 7. Qc3 d5 8. exd5 Nbxd5 9. Qe5+ Be7 10. 0-0 Nb6 11. Bb3 0-0 12. Qg3 Bd6 13. Qh4 Bf5 14. Bg5 Nbd7 15. Nc3 c6 16. Rad1 Qc7 17. h3 Rae8 18. Rfe1 Bg6 19. Qd4 Rxe1+ 20. Rxe1 c5 21. Qd2 c4 22. Nb5 Qc6 23. Nxd6 cxb3 24. cxb3 Rd8 25. Rc1 Nc5 26. Ne5 Rxd6 27. Nxc6 Rxd2 28. Bxd2 Nd3 29. Ne7+ Kf8 30. Nxg6+ hxg6 31. Rc7 1-0

[Event "East Region-ch U10"]
[Site "Medellin"]
[Date "2011.03.??"]
[Round "4.1"]
[White "Ferreira, Mayra Alejandra"]
[Black "Ruiz Agudelo, Santiago"]
[Result "0-1"]
[ECO "D05"]
[WhiteElo "1536"]
[BlackElo "1605"]
[PlyCount "50"]
[EventDate "2011.03.03"]
[EventType "tourn"]
[EventRounds "6"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 e6 3. e3 Nc6 4. Bd3 Be7 5. b3 0-0 6. Bb2 d5 7. 0-0 Bd7 8. c4 Nb4 9. a3 Nxd3 10. Qxd3 a6 11. Nc3 Rb8 12. e4 dxe4 13. Nxe4 b5 14. Rab1 bxc4 15. bxc4 Bc6 16. Nfg5 Nxe4 17. Nxe4 e5 18. Rfd1 Ba4 19. Rd2 exd4 20. Bxd4 Qd7 21. Rxb8 Rxb8 22. h3 Rb3 23. Qe2 Bd6 24. c5 Rb1+ 25. Qf1 Rxf1+ 0-1

[Event "East Region-ch U10"]
[Site "Medellin"]
[Date "2011.03.??"]
[Round "1.2"]
[White "Rios Serna, Valentina"]
[Black "Ferreira, Mayra Alejandra"]
[Result "0-1"]
[ECO "C42"]
[WhiteElo "1355"]
[BlackElo "1536"]
[PlyCount "52"]
[EventDate "2011.03.03"]
[EventType "tourn"]
[EventRounds "6"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Bc4 Nxe4 4. Nxe5 d5 5. Bb3 Qe7 6. d4 f6 7. Bg5 Nxg5 8. Qe2 fxe5 9. Qxe5 Qxe5+ 10. dxe5 Be6 11. h3 Bc5 12. 0-0 0-0 13. Nc3 Nc6 14. Rfe1 Bxf2+ 15. Kf1 Bxe1+ 16. Kxe1 Rae8 17. Rd1 d4 18. Na4 b5 19. Nc5 Bxb3 20. axb3 Rxe5+ 21. Kd2 Rf2+ 22. Kc1 Rxc5 23. Rxd4 Nxd4 24. b4 Rcxc2+ 25. Kb1 Rxb2+ 26. Ka1 Nb3# 0-1

[Event "East Region-ch U10"]
[Site "Medellin"]
[Date "2011.03.??"]
[Round "5.2"]
[White "Varela Garcia, Maria de los Angele"]
[Black "Ferreira, Mayra Alejandra"]
[Result "0-1"]
[ECO "A21"]
[WhiteElo "1495"]
[BlackElo "1536"]
[PlyCount "70"]
[EventDate "2011.03.03"]
[EventType "tourn"]
[EventRounds "6"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 f5 3. g3 d6 4. Bg2 Nf6 5. d3 c6 6. Bg5 Be6 7. Nf3 Be7 8. Bxf6 Bxf6 9. 0-0 Nd7 10. Re1 Nf8 11. b4 Ng6 12. Nd2 0-0 13. b5 d5 14. cxd5 cxd5 15. Qb3 Ne7 16. Na4 h5 17. Nc5 Qc8 18. Nxe6 Qxe6 19. e4 Rad8 20. exd5 Nxd5 21. Nf3 Qd6 22. Nd2 Kh8 23. Nc4 Qb8 24. Ne3 Nxe3 25. Rxe3 h4 26. Rae1 f4 27. gxf4 exf4 28. Rh3 Qc8 29. Re5 Qg4 30. Re4 Rc8 31. Re1 Rfe8 32. Rxe8+ Rxe8 33. Qb1 Bd4 34. Kh1 Bxf2 35. Qf1 Re1 0-1

[Event "East Region-ch U10"]
[Site "Medellin"]
[Date "2011.03.??"]
[Round "3.1"]
[White "Yepez Ortiz, Dubier"]
[Black "Ferreira, Mayra Alejandra"]
[Result "0-1"]
[ECO "B01"]
[WhiteElo "1341"]
[BlackElo "1536"]
[PlyCount "32"]
[EventDate "2011.03.03"]
[EventType "tourn"]
[EventRounds "6"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. d4 Nf6 5. Bd2 Nc6 6. Nf3 Qh5 7. a3 Bg4 8. Be2 0-0-0 9. 0-0 Nxd4 10. Nxd4 Rxd4 11. Bxg4+ Rxg4 12. h3 Qxh3 13. g3 e6 14. Qf3 Bc5 15. Qh1 Rxg3+ 16. Qg2 Qxg2# 0-1

[Event "Central America-ch U08 Girls"]
[Site "Medellin"]
[Date "2010.12.13"]
[Round "7"]
[White "Leon Placencia, Elisa"]
[Black "Ferreira, Mayra Alejandra"]
[Result "1-0"]
[ECO "C22"]
[PlyCount "63"]
[EventDate "2010.12.09"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]

1. e4 e5 2. d4 exd4 3. Qxd4 Nc6 4. Qe3 d6 5. Nc3 Nf6 6. Bd2 Be6 7. h3 Be7 8. 0-0-0 Qd7 9. f4 d5 10. f5 d4 11. fxe6 Qxe6 12. Qg3 dxc3 13. Bxc3 Bd6 14. Qxg7 Ke7 15. Nf3 Rag8 16. Qxf6+ Qxf6 17. Bxf6+ Kxf6 18. Bd3 Ke7 19. g4 Kd7 20. e5 Nxe5 21. Nxe5+ Bxe5 22. Bxh7+ Kc8 23. Bxg8 Rxg8 24. Rhe1 Bf4+ 25. Kb1 Bg5 26. Re5 Bh4 27. Rh5 Bg3 28. h4 Bd6 29. g5 Re8 30. a3 Rg8 31. Rd4 Bc5 32. Rd3 1-0

[Event "Central America-ch U08 Girls"]
[Site "Medellin"]
[Date "2010.12.12"]
[Round "6"]
[White "Ferreira, Mayra Alejandra"]
[Black "Fitzgerald, Daniela"]
[Result "1-0"]
[ECO "C53"]
[PlyCount "35"]
[EventDate "2010.12.09"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Qe7 5. 0-0 Nf6 6. d4 exd4 7. cxd4 Bb6 8. d5 Qxe4 9. Re1 Qxe1+ 10. Qxe1+ Ne7 11. Bg5 Bc5 12. Bxf6 gxf6 13. Qc3 f5 14. Qxh8+ Ng8 15. Qxg8+ Bf8 16. Ne5 d6 17. Qxf7+ Kd8 18. Qxf8# 1-0

[Event "Central America-ch U08 Girls"]
[Site "Medellin"]
[Date "2010.12.10"]
[Round "3"]
[White "Ferreira, Mayra Alejandra"]
[Black "De Silva, Amber"]
[Result "1-0"]
[ECO "C54"]
[PlyCount "25"]
[EventDate "2010.12.09"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. cxd4 Bb4+ 7. Nc3 0-0 8. 0-0 h6 9. e5 Ng4 10. h3 Ngxe5 11. Re1 Re8 12. dxe5 Nxe5 13. Nxe5 1-0

[Event "Central America-ch U08 Girls"]
[Site "Medellin"]
[Date "2010.12.10"]
[Round "2"]
[White "Ramirez, Jemmily"]
[Black "Ferreira, Mayra Alejandra"]
[Result "0-1"]
[ECO "C42"]
[PlyCount "58"]
[EventDate "2010.12.09"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Nc3 Bb4 4. Bd3 d6 5. h3 0-0 6. 0-0 Bxc3 7. dxc3 Nbd7 8. Nh4 Nxe4 9. Bxe4 Qxh4 10. Qd3 Nc5 11. Qe2 Qxe4 12. Qxe4 Nxe4 13. Re1 Nf6 14. c4 b6 15. Re3 Bb7 16. Rg3 Kh8 17. Bd2 Ne4 18. Rd3 Nxd2 19. Rxd2 Rfe8 20. Rad1 Re6 21. Rd3 Rg6 22. f3 e4 23. Re3 exf3 24. Rde1 Rxg2+ 25. Kh1 Bc6 26. b4 f2 27. b5 fxe1Q+ 28. Rxe1 Re2+ 29. bxc6 Rxe1+ 0-1

[Event "Central America-ch U08 Girls"]
[Site "Medellin"]
[Date "2010.12.09"]
[Round "1"]
[White "Ferreira, Mayra Alejandra"]
[Black "Marquez, Gabriela"]
[Result "1-0"]
[ECO "C50"]
[PlyCount "33"]
[EventDate "2010.12.09"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 h6 4. d4 Bb4+ 5. Nc3 Nf6 6. 0-0 Nxe4 7. Nxe4 d5 8. Bd3 dxe4 9. Bxe4 exd4 10. Bd3 0-0 11. Bd2 Bxd2 12. Qxd2 a6 13. c3 Re8 14. cxd4 Nxd4 15. Nxd4 Qxd4 16. Bh7+ Kxh7 17. Qxd4 1-0

[Event "Antioquia Region-ch U10"]
[Site "Medellin"]
[Date "2010.09.??"]
[Round "2.4"]
[White "Cardenas Escudero, Laura Yuliet"]
[Black "Ferreira, Mayra Alejandra"]
[Result "1/2-1/2"]
[ECO "C42"]
[WhiteElo "1315"]
[BlackElo "1473"]
[PlyCount "91"]
[EventDate "2010.09.03"]
[EventType "tourn"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. Qe2 Qe7 6. d3 Nf6 7. Nc3 Qxe2+ 8. Bxe2 c6 9. Bf4 Be6 10. 0-0 Nbd7 11. Rfe1 0-0-0 12. d4 d5 13. Bd3 Bb4 14. a3 Bxc3 15. bxc3 Rde8 16. Rab1 Nb6 17. Rb2 Bg4 18. Reb1 Re7 19. h3 Bxf3 20. Bf5+ Kd8 21. gxf3 h6 22. a4 g6 23. Be5 gxf5 24. Bxf6 Rg8+ 25. Kf1 Kd7 26. Bxe7 Kxe7 27. a5 Nc4 28. Rxb7+ Kf6 29. Rxa7 Nd2+ 30. Ke2 Nxb1 31. a6 Nxc3+ 32. Kd3 Nb5 33. Rb7 Nd6 34. Rb6 Rc8 35. a7 Ra8 36. Rxc6 Ke6 37. Ra6 Kd7 38. Kc3 Nb5+ 39. Kb4 Nxa7 40. Kc5 Kc7 41. c3 Kb7 42. Rb6+ Kc7 43. Ra6 Kb7 44. Rb6+ Kc7 45. Ra6 Kb7 46. Rb6+ 1/2-1/2

[Event "Antioquia Region-ch U10"]
[Site "Medellin"]
[Date "2010.09.??"]
[Round "3.3"]
[White "Ferreira, Mayra Alejandra"]
[Black "Arbelaez Velasquez, Jeronimo"]
[Result "1-0"]
[ECO "C54"]
[WhiteElo "1473"]
[BlackElo "1489"]
[PlyCount "33"]
[EventDate "2010.09.03"]
[EventType "tourn"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. cxd4 Nxe4 7. dxc5 Qe7 8. 0-0 Nxc5 9. Re1 Ne6 10. Nc3 0-0 11. Nd5 Qc5 12. Bb3 Ned4 13. Nxd4 Nxd4 14. Be3 Re8 15. Bxd4 Rxe1+ 16. Qxe1 Qxd4 17. Qe8# 1-0

[Event "Antioquia Region-ch U10"]
[Site "Medellin"]
[Date "2010.09.??"]
[Round "1.5"]
[White "Ferreira, Mayra Alejandra"]
[Black "Pineda, Oriana"]
[Result "1-0"]
[ECO "C24"]
[WhiteElo "1473"]
[BlackElo "1236"]
[PlyCount "43"]
[EventDate "2010.09.03"]
[EventType "tourn"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 d5 5. exd5 Nxd5 6. 0-0 Bc5 7. Re1 0-0 8. Nxe5 Bxf2+ 9. Kxf2 Qh4+ 10. Kg1 Qd4+ 11. Kh1 Nxe5 12. Bxd5 Qxd5 13. Nc3 Qd4 14. Be3 Qh4 15. Bc5 Ng4 16. h3 Bf5 17. Rf1 Rfe8 18. Qf3 Re5 19. Bd4 Re3 20. Qxf5 h6 21. Qxf7+ Kh7 22. Qxg7# 1-0

[Event "Antioquia Region-ch U10"]
[Site "Medellin"]
[Date "2010.09.??"]
[Round "4.1"]
[White "Ruiz Agudelo, Santiago"]
[Black "Ferreira, Mayra Alejandra"]
[Result "1-0"]
[ECO "C42"]
[WhiteElo "1504"]
[BlackElo "1473"]
[PlyCount "87"]
[EventDate "2010.09.03"]
[EventType "tourn"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Nc3 Bb4 4. d3 d5 5. a3 Ba5 6. b4 Bb6 7. Bg5 c6 8. exd5 cxd5 9. Bxf6 Qxf6 10. Nxd5 Qd6 11. Nxb6 axb6 12. d4 exd4 13. Qxd4 Qxd4 14. Nxd4 0-0 15. Bd3 Re8+ 16. Kd2 Nc6 17. Bb5 Bd7 18. Nxc6 Bxc6 19. Bxc6 bxc6 20. Rhe1 Rad8+ 21. Kc3 Kf8 22. Rxe8+ Rxe8 23. a4 Ra8 24. a5 b5 25. Kd4 Ke7 26. Kc5 Kd7 27. Rd1+ Kc7 28. Rc1 h6 29. c4 bxc4 30. Rxc4 Rb8 31. a6 Rb5+ 32. Kd4 Kb6 33. Kc3 Kc7 34. a7 Kb7 35. Rxc6 Kxa7 36. Rc7+ Rb7 37. Rxb7+ Kxb7 38. Kc4 Kb6 39. Kd5 Kb5 40. Kd6 Kxb4 41. Ke7 Kc3 42. Kxf7 Kd2 43. Kxg7 Ke2 44. f4 1-0

[Event "COL-ch U10 Girls"]
[Site "Medellin"]
[Date "2009.12.16"]
[Round "4"]
[White "Ferreira, Mayra Alejandra"]
[Black "Castro, Dayana"]
[Result "0-1"]
[ECO "B40"]
[PlyCount "35"]
[EventDate "2009.12.15"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Bc5 5. Nc3 Qb6 6. Be3 Qxb2 7. Kd2 Qb4 8. Kd3 e5 9. Nb3 Bxe3 10. fxe3 Qd6+ 11. Ke2 Qxd1+ 12. Rxd1 Nf6 13. Kf2 0-0 14. Bc4 h6 15. Rhf1 Ng4+ 16. Kg1 Nxe3 17. Bd3 Nxf1 18. Rxf1 0-1

[Event "COL-ch U10 Girls"]
[Site "Medellin"]
[Date "2009.12.16"]
[Round "3"]
[White "Gomez Guardo, Laura Melissa"]
[Black "Ferreira, Mayra Alejandra"]
[Result "1-0"]
[ECO "E01"]
[WhiteElo "1976"]
[PlyCount "44"]
[EventDate "2009.12.15"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 Be7 5. g3 h6 6. Bg2 0-0 7. 0-0 dxc4 8. Ne5 Nbd7 9. Nxc4 Nb6 10. Ne5 Bd7 11. Bxb7 Rb8 12. Bg2 Bd6 13. Nf3 Bc6 14. b3 Qd7 15. Bb2 Rfe8 16. e3 Bb7 17. Re1 Ne4 18. Nxe4 Bxe4 19. Ne5 Bxe5 20. Bxe4 Bd6 21. Qc2 Qd8 22. a3 Nd7 1-0

[Event "COL-ch U10 Girls"]
[Site "Medellin"]
[Date "2009.12.15"]
[Round "1"]
[White "Baron, Paula Alejandra"]
[Black "Ferreira, Mayra Alejandra"]
[Result "0-1"]
[ECO "C43"]
[PlyCount "47"]
[EventDate "2009.12.15"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 4. Be3 exd4 5. Bxd4 Be7 6. Nbd2 Nxd2 7. Qxd2 Nc6 8. 0-0-0 d6 9. Bd3 Be6 10. Rhe1 d5 11. Be3 Qd6 12. Bg5 0-0-0 13. Bxe7 Qxe7 14. Bf5 Qd6 15. Bd3 Kb8 16. Qc3 Rdg8 17. Qb3 d4 18. Rxe6 fxe6 19. Ba6 Qb4 20. Qd3 bxa6 21. Qxa6 Qb7 22. Qc4 e5 23. Re1 Re8 24. Rd1 0-1

[Event "COL-ch U10 Girls"]
[Site "Medellin"]
[Date "2009.12.15"]
[Round "6"]
[White "Varela Garcia, Maria de los Angele"]
[Black "Ferreira, Mayra Alejandra"]
[Result "1-0"]
[ECO "C42"]
[PlyCount "35"]
[EventDate "2009.12.15"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Nc3 Bb4 4. d3 Nc6 5. a3 Bxc3+ 6. bxc3 d6 7. g3 Be6 8. Bg2 Qd7 9. Ng5 Bg4 10. Nf3 d5 11. exd5 Qxd5 12. 0-0 Qd6 13. Re1 0-0-0 14. h3 Bh5 15. Qd2 Rhe8 16. a4 Kb8 17. Ba3 Qd7 18. Ng5 1-0

[Event "COL-ch U10 Girls"]
[Site "Medellin"]
[Date "2009.12.??"]
[Round "7"]
[White "Ferreira, Mayra Alejandra"]
[Black "Ramirez, Juliana"]
[Result "0-1"]
[ECO "C45"]
[PlyCount "37"]
[EventDate "2009.12.15"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Nxd4 5. Qxd4 Nf6 6. Nc3 d6 7. Bc4 Be6 8. Bb3 g6 9. Be3 Bg7 10. 0-0 0-0 11. Qd3 Qe7 12. Bf4 Rad8 13. Rad1 Rfe8 14. Qe3 a6 15. e5 dxe5 16. Bxe5 Rxd1 17. Rxd1 Ng4 18. Qe4 Nxe5 19. f4 0-1

[Event "COL-ch U10 Girls"]
[Site "Medellin"]
[Date "2009.12.??"]
[Round "5"]
[White "Pineda, Oriana"]
[Black "Ferreira, Mayra Alejandra"]
[Result "0-1"]
[ECO "C42"]
[PlyCount "32"]
[EventDate "2009.12.15"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Nc3 Bb4 4. d4 Nxe4 5. dxe5 Nxc3 6. bxc3 Bxc3+ 7. Bd2 Bxa1 8. Qxa1 d5 9. Bg5 Qd7 10. Qb1 Nc6 11. Bb5 a6 12. e6 Qxe6+ 13. Kf1 axb5 14. Qxb5 b6 15. Nd4 Ba6 16. Qxa6 Rxa6 0-1

[Event "COL-ch U08 Girls"]
[Site "Cali"]
[Date "2009.05.22"]
[Round "4.1"]
[White "Mejia, Mariana1111"]
[Black "Ferreira, Mayra Alejandra"]
[Result "1-0"]
[ECO "C56"]
[WhiteElo "1304"]
[BlackElo "1370"]
[PlyCount "29"]
[EventDate "2009.05.21"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 e5 2. d4 exd4 3. Bc4 Bc5 4. Nf3 Nc6 5. 0-0 Nf6 6. Bg5 h6 7. Bxf6 Qxf6 8. Re1 0-0 9. e5 Qd8 10. Nbd2 Re8 11. Qe2 Qe7 12. Bd3 d6 13. Qe4 Qxe5 14. Qh7+ Kf8 15. Qh8+ 1-0

