[Event "Pan American-ch U14 Girls"]
[Site "Montevideo"]
[Date "2022.06.27"]
[Round "3"]
[White "Costa, Maria"]
[Black "Zhong, April Yunwei"]
[Result "0-1"]
[ECO "B23"]
[WhiteElo "1234"]
[BlackElo "1392"]
[PlyCount "96"]
[EventDate "2022.06.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "URU"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 d6 3. f4 Nf6 4. Nf3 Nc6 5. Bc4 e6 6. e5 dxe5 7. fxe5 Nd5 8. 0-0 Be7 9. Qe1 Nf4 10. d3 Ng6 11. Qg3 a6 12. a4 Nd4 13. Qf2 Nxf3+ 14. Qxf3 Nxe5 15. Qf2 0-0 16. Qg3 Ng6 17. Ne2 b6 18. Qf3 Ra7 19. Ng3 Ne5 20. Qe2 Nxc4 21. dxc4 Rd7 22. Be3 Bg5 23. Bxg5 Qxg5 24. Ne4 Qg6 25. a5 Bb7 26. Ng3 Rfd8 27. Rfd1 bxa5 28. Rxd7 Rxd7 29. Rxa5 Qg5 30. Qf2 Rd2 31. Rxc5 Rxf2 32. Rxg5 Rxg2+ 33. Kf1 Rxc2 34. Rc5 g6 35. Rc7 Bf3 36. b4 h5 37. h4 e5 38. c5 Rc4 39. Kf2 Bd5 40. Rd7 Bc6 41. Rd6 Bb5 42. Ke3 Rxb4 43. c6 Rc4 44. Rd8+ Kg7 45. Rc8 Rxc6 46. Rxc6 Bxc6 47. Kd3 f5 48. Kc4 f4 0-1

[Event "Pan American-ch U14 Girls"]
[Site "Montevideo"]
[Date "2022.06.27"]
[Round "2"]
[White "Villegas Ampuero, Consuelo"]
[Black "Costa, Maria"]
[Result "1-0"]
[ECO "A31"]
[WhiteElo "1333"]
[BlackElo "1234"]
[PlyCount "71"]
[EventDate "2022.06.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "URU"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. c4 c5 2. Nc3 d6 3. g3 Nf6 4. Bg2 g6 5. Nf3 Nc6 6. d4 cxd4 7. Nxd4 Bd7 8. 0-0 Bg7 9. Rb1 0-0 10. Nxc6 Bxc6 11. Nd5 Rb8 12. Be3 Ra8 13. b4 e6 14. b5 exd5 15. bxc6 bxc6 16. cxd5 c5 17. Bg5 Rb8 18. Bxf6 Bxf6 19. Qa4 Qc7 20. Qc6 Rfc8 21. Qxc7 Rxc7 22. Rxb8+ Kg7 23. Rfb1 c4 24. R1b7 Rc5 25. Be4 Bc3 26. Rb5 Rc7 27. R8b7 Rc8 28. Rxa7 Bd2 29. Rd7 c3 30. Bc2 Rc5 31. Rxc5 dxc5 32. a4 Kf8 33. a5 Ke8 34. Rc7 Bg5 35. a6 Bd8 36. Rb7 1-0

[Event "Pan American-ch U14 Girls"]
[Site "Montevideo"]
[Date "2022.06.26"]
[Round "1"]
[White "Costa, Maria"]
[Black "Wilson, Hannah"]
[Result "0-1"]
[ECO "B23"]
[WhiteElo "1234"]
[BlackElo "1522"]
[PlyCount "50"]
[EventDate "2022.06.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "URU"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 g6 3. f4 Nc6 4. Nf3 Bg7 5. Bc4 e6 6. 0-0 Nge7 7. e5 d6 8. exd6 Qxd6 9. Ne4 Qc7 10. Nxc5 Qb6 11. d4 Nxd4 12. Be3 Nec6 13. Na4 Nxf3+ 14. Rxf3 Qa5 15. Nc3 0-0 16. Rh3 e5 17. Rg3 exf4 18. Bxf4 Qc5+ 19. Be3 Qxc4 20. Kh1 Be5 21. Rg5 f6 22. Rxg6+ hxg6 23. Bh6 Qh4 24. Qd5+ Kh7 25. g3 Qxh6 0-1

[Event "URU-ch U20"]
[Site "Nueva Helvecia"]
[Date "2020.11.22"]
[Round "5"]
[White "Llanes, Nicolas"]
[Black "Costa, Maria"]
[Result "0-1"]
[ECO "A36"]
[BlackElo "1234"]
[PlyCount "92"]
[EventDate "2020.11.20"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "URU"]
[SourceTitle "CBM 199 Extra"]
[Source "ChessBase"]
[SourceDate "2021.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2021.01.31"]
[SourceQuality "1"]

1. c4 c5 2. Nc3 d6 3. g3 Nf6 4. Bg2 g6 5. d3 Bg7 6. e4 Nc6 7. Nge2 0-0 8. Be3 Ng4 9. Qd2 Nxe3 10. Qxe3 Nd4 11. Qd2 Nxe2 12. Qxe2 Rb8 13. 0-0 b6 14. Rab1 Bb7 15. a4 Kh8 16. Rfc1 f5 17. b4 f4 18. f3 fxg3 19. hxg3 Qc7 20. Nd5 Qd7 21. a5 e6 22. Ne3 Qc7 23. f4 Rbd8 24. axb6 axb6 25. b5 Qe7 26. Rb3 Ra8 27. Re1 Ra1 28. Rxa1 Bxa1 29. Ng4 Bg7 30. Bf3 Qf7 31. f5 exf5 32. exf5 Bxf3 33. Qxf3 Qxf5 34. Qxf5 Rxf5 35. Ra3 h5 36. Nf2 Bd4 37. Ra8+ Kg7 38. Ra7+ Kf6 39. Ra2 Bxf2+ 40. Rxf2 Rxf2 41. Kxf2 Ke6 42. Ke3 g5 43. d4 cxd4+ 44. Kd3 h4 45. Ke2 hxg3 46. Kf3 d3 0-1

[Event "URU-ch U20"]
[Site "Nueva Helvecia"]
[Date "2020.11.22"]
[Round "6"]
[White "Rodriguez Delfino, Tiago"]
[Black "Costa, Maria"]
[Result "1/2-1/2"]
[ECO "B23"]
[WhiteElo "1492"]
[BlackElo "1234"]
[PlyCount "31"]
[EventDate "2020.11.20"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "URU"]
[SourceTitle "CBM 199 Extra"]
[Source "ChessBase"]
[SourceDate "2021.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2021.01.31"]
[SourceQuality "1"]

1. e4 c5 2. f4 d6 3. Nf3 Nc6 4. Nc3 g6 5. Bb5 Bd7 6. 0-0 Bg7 7. d3 Bg4 8. Bxc6+ bxc6 9. h3 Bd7 10. Be3 Qb6 11. Rb1 Qa5 12. e5 Qc7 13. d4 f6 14. exd6 exd6 15. Re1 Bf8 16. dxc5 1/2-1/2

[Event "URU-ch U20"]
[Site "Nueva Helvecia"]
[Date "2020.11.21"]
[Round "2"]
[White "Costa, Maria"]
[Black "Elena, Eduardo"]
[Result "0-1"]
[ECO "D02"]
[WhiteElo "1234"]
[BlackElo "1812"]
[PlyCount "108"]
[EventDate "2020.11.20"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "URU"]
[SourceTitle "CBM 199 Extra"]
[Source "ChessBase"]
[SourceDate "2021.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2021.01.31"]
[SourceQuality "1"]

1. d4 d5 2. Bf4 Nf6 3. e3 c5 4. Nf3 Nc6 5. Be2 Qb6 6. b3 Bf5 7. 0-0 e6 8. Nbd2 cxd4 9. Nxd4 Nxd4 10. exd4 Qxd4 11. Be3 Qe5 12. Nf3 Qc7 13. Nd4 Bg6 14. c4 a6 15. cxd5 Nxd5 16. Rc1 Qd7 17. Nf3 Bd6 18. Nh4 Rc8 19. Nxg6 hxg6 20. g3 Nxe3 21. fxe3 Rxc1 22. Qxc1 0-0 23. Bf3 Bb4 24. Rd1 Qe7 25. Qc2 Bc5 26. Qe4 Rd8 27. Rxd8+ Qxd8 28. Qe5 Qb6 29. Kf2 Qb4 30. Ke2 Qb5+ 31. Kf2 Qb4 32. Ke2 Qa3 33. Kd3 b6 34. Qa1 a5 35. Bc6 Be7 36. Ba4 Bf6 37. Qb1 Qc5 38. Qc2 Qd5+ 39. Ke2 b5 40. Qd3 Qxd3+ 41. Kxd3 bxa4 42. bxa4 Kf8 43. Kc4 Ke7 44. Kb5 Bc3 45. Kc4 Be1 46. Kd3 Kd6 47. Kd4 g5 48. Ke4 Kc5 49. Kf3 Kb4 50. Kg4 Kxa4 51. Kxg5 Ka3 52. Kf4 Kxa2 53. Ke4 Kb2 54. Kd3 a4 0-1

[Event "URU-ch U20"]
[Site "Nueva Helvecia"]
[Date "2020.11.21"]
[Round "4"]
[White "Costa, Maria"]
[Black "Fabra, Nahiara"]
[Result "0-1"]
[ECO "D02"]
[WhiteElo "1234"]
[BlackElo "1412"]
[PlyCount "108"]
[EventDate "2020.11.20"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "URU"]
[SourceTitle "CBM 199 Extra"]
[Source "ChessBase"]
[SourceDate "2021.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2021.01.31"]
[SourceQuality "1"]

1. d4 d5 2. Bf4 e6 3. e3 Nf6 4. Nf3 Be7 5. Bd3 0-0 6. c3 Nbd7 7. Qc2 c5 8. dxc5 Nxc5 9. Nbd2 b6 10. 0-0 Bb7 11. Ng5 h6 12. Ngf3 Rc8 13. Ne5 Bd6 14. Ndf3 Qc7 15. Bg3 Nfe4 16. Nd2 Nxg3 17. hxg3 Bxe5 18. Nf3 Bd6 19. Rac1 Ne4 20. c4 Bc5 21. Qe2 Qd6 22. Rfd1 Qe7 23. Ne5 Rfd8 24. Qf3 Ng5 25. Qe2 Bd6 26. Nf3 Nxf3+ 27. Qxf3 dxc4 28. Be4 Bxe4 29. Qxe4 c3 30. bxc3 Rxc3 31. Re1 Rxc1 32. Rxc1 Bc5 33. Qf3 Qd7 34. Kf1 Qd2 35. Ra1 Qd3+ 36. Kg1 Qc3 37. Rf1 Rd2 38. Qa8+ Kh7 39. Qe4+ g6 40. Qf3 Qg7 41. a4 Ra2 42. Qd1 Qb2 43. Qf3 Kg7 44. Qf4 e5 45. Qe4 h5 46. Qf3 Rxa4 47. Qd1 Ra2 48. Qf3 a5 49. Re1 a4 50. Kf1 Ra1 51. Rxa1 Qxa1+ 52. Ke2 Qb2+ 53. Kf1 a3 54. Kg1 a2 0-1

[Event "URU-ch U20"]
[Site "Nueva Helvecia"]
[Date "2020.11.21"]
[Round "3"]
[White "Costabel, Emma"]
[Black "Costa, Maria"]
[Result "0-1"]
[ECO "B50"]
[BlackElo "1234"]
[PlyCount "70"]
[EventDate "2020.11.20"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "URU"]
[SourceTitle "CBM 199 Extra"]
[Source "ChessBase"]
[SourceDate "2021.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2021.01.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. Bc4 Nc6 4. 0-0 g6 5. Ng5 e6 6. d3 Bg7 7. c3 Nf6 8. Be3 0-0 9. Nd2 Nd7 10. Qf3 Nf6 11. Qd1 Ne5 12. d4 Nxc4 13. Nxc4 cxd4 14. cxd4 d5 15. exd5 exd5 16. Ne5 Nd7 17. Nxd7 Bxd7 18. Qf3 Bf5 19. Qg3 h6 20. Nf3 Qb8 21. Qh4 Qd8 22. Qg3 Rc8 23. Rac1 Qe7 24. Ne5 Qd6 25. Bf4 Qb6 26. Qe3 g5 27. Bg3 Qxb2 28. Nd3 Bxd3 29. Qxd3 Rxc1 30. h3 Rfc8 31. Bd6 Bxd4 32. Qf3 R8c3 33. Qh5 Qxf2+ 34. Kh2 Rxf1 35. Qg4 Qg1# 0-1

[Event "URU-ch U20"]
[Site "Nueva Helvecia"]
[Date "2020.11.20"]
[Round "1"]
[White "Ruiz, Alain"]
[Black "Costa, Maria"]
[Result "0-1"]
[ECO "B50"]
[BlackElo "1234"]
[PlyCount "72"]
[EventDate "2020.11.20"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "URU"]
[SourceTitle "CBM 199 Extra"]
[Source "ChessBase"]
[SourceDate "2021.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2021.01.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. Bc4 Nc6 4. h3 Nf6 5. d3 g6 6. 0-0 Bg7 7. c3 Bd7 8. Bb3 0-0 9. Bg5 Rb8 10. Re1 Qc7 11. Nbd2 Rfe8 12. Nc4 e5 13. Ne3 Qc8 14. Bxf6 Bxf6 15. Nd5 Bg7 16. Nh2 Ne7 17. Re3 Nxd5 18. Bxd5 Be6 19. c4 Kh8 20. Rg3 Rf8 21. Nf1 f5 22. Bxe6 Qxe6 23. exf5 Qxf5 24. Rf3 Qe6 25. Ng3 Rbd8 26. Qe2 d5 27. Rxf8+ Rxf8 28. cxd5 Qxd5 29. Qe4 Qd7 30. Rc1 b6 31. Ne2 Qf7 32. f3 Qxa2 33. Rc2 Qb1+ 34. Rc1 Qxb2 35. Re1 Rd8 36. f4 Qb4 0-1

[Event "South America-ch U12 Girls 16th"]
[Site "Buenos Aires"]
[Date "2019.12.04"]
[Round "6.9"]
[White "Costa, Maria"]
[Black "Arce, Valeria"]
[Result "0-1"]
[ECO "A46"]
[BlackElo "1315"]
[PlyCount "106"]
[EventDate "2019.12.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 d6 2. Bf4 Nf6 3. e3 Nbd7 4. Nf3 Nh5 5. Be2 Nxf4 6. exf4 g6 7. c4 Bg7 8. Nc3 0-0 9. 0-0 e5 10. Qd2 c6 11. Rad1 Qc7 12. d5 c5 13. Rfe1 a6 14. Bd3 b6 15. f5 Nf6 16. fxg6 fxg6 17. Ng5 Nh5 18. Ne6 Bxe6 19. dxe6 Rae8 20. Nd5 Qb8 21. e7 Rf7 22. Be4 Nf6 23. Nxf6+ Rxf6 24. b4 Rxe7 25. bxc5 dxc5 26. g3 Kh8 27. Re2 Rfe6 28. Qe3 Rd7 29. Red2 Rxd2 30. Rxd2 Rd6 31. Rxd6 Qxd6 32. Qg5 Qf8 33. Qh4 Qf6 34. Qh3 Bf8 35. Qc8 b5 36. cxb5 axb5 37. Qb8 b4 38. Kg2 Qd6 39. Qe8 Qf6 40. h4 c4 41. f3 Qe7 42. Qc8 c3 43. Kh3 Qc5 44. Qb8 Kg8 45. Qe8 Qe7 46. Bd5+ Kg7 47. Qc6 Qd6 48. Qb7+ Be7 49. Be4 Qc5 50. Kg2 c2 51. Bxc2 Qxc2+ 52. Kh3 Qf5+ 53. Kg2 Kf7 0-1

[Event "South America-ch U12 Girls 16th"]
[Site "Buenos Aires"]
[Date "2019.12.04"]
[Round "5.10"]
[White "Costa, Maria"]
[Black "Montiel Marin, Micaela Agustina"]
[Result "1-0"]
[ECO "A48"]
[BlackElo "1331"]
[PlyCount "71"]
[EventDate "2019.12.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 Nf6 2. Bf4 g6 3. e3 Bg7 4. Nf3 0-0 5. Be2 d6 6. 0-0 Nfd7 7. h3 e5 8. Bg3 Nc6 9. c3 f5 10. e4 fxe4 11. Bh4 Qe8 12. Bc4+ Kh8 13. Ng5 exd4 14. Ne6 Nb6 15. cxd4 Nxc4 16. Nxg7 Kxg7 17. d5 N6e5 18. Qd4 Kg8 19. f4 Nd3 20. Qxc4 Nc5 21. Nc3 a6 22. Rae1 e3 23. Qd4 Bf5 24. Rxe3 Qf7 25. Re7 Qxe7 26. Bxe7 Rfe8 27. Bf6 Ne4 28. Nxe4 Rxe4 29. Qc3 Rc8 30. Bh8 Re7 31. Kh2 Rce8 32. Re1 Kf8 33. Qf6+ Rf7 34. Bg7+ Kg8 35. Rxe8+ Rf8 36. Qxf8# 1-0

[Event "South America-ch U12 Girls 16th"]
[Site "Buenos Aires"]
[Date "2019.12.02"]
[Round "3.10"]
[White "Buiar, Maria Eduarda Beral"]
[Black "Costa, Maria"]
[Result "1-0"]
[ECO "A48"]
[WhiteElo "1380"]
[PlyCount "61"]
[EventDate "2019.12.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 Nf6 2. Bf4 g6 3. e3 Bg7 4. Nf3 0-0 5. Nbd2 d6 6. Bd3 Nc6 7. c3 Re8 8. Bg5 b6 9. 0-0 Bb7 10. Re1 Qd7 11. Bb5 e5 12. Bxf6 Bxf6 13. d5 e4 14. dxc6 Bxc6 15. Bxc6 Qxc6 16. Nd4 Qd7 17. Qc2 c5 18. Nxe4 Bg7 19. Ne2 Qc6 20. N2g3 Re7 21. Rad1 Rd8 22. Re2 Kh8 23. Red2 Be5 24. f4 Bg7 25. Nxd6 Kg8 26. Qb3 Re6 27. Nge4 c4 28. Qxc4 Qa8 29. Ng5 Re7 30. Ngxf7 Rf8 31. Nh6+ 1-0

[Event "Nueva Helvecia Colonia Cup"]
[Site "Nueva Helvecia"]
[Date "2019.09.29"]
[Round "3"]
[White "Costa, Maria"]
[Black "Campora, Edgardo"]
[Result "0-1"]
[ECO "A48"]
[BlackElo "1694"]
[PlyCount "84"]
[EventDate "2019.09.28"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "URU"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. d4 Nf6 2. Bf4 g6 3. e3 Bg7 4. Nf3 d6 5. h3 0-0 6. Be2 b6 7. 0-0 Bb7 8. Nc3 Nbd7 9. Qd2 Re8 10. Bh2 e5 11. b3 Qe7 12. Bb5 a6 13. Bd3 e4 14. Be2 exf3 15. Bxf3 Bxf3 16. gxf3 Qe6 17. Kh1 Qxh3 18. Rg1 Qxf3+ 19. Rg2 Ne4 20. Qe1 Nxc3 21. Qxc3 c5 22. Qe1 cxd4 23. Qg1 dxe3 24. fxe3 Bxa1 25. Qxa1 Rxe3 26. Qg1 Rae8 27. Bg3 Qd5 28. c4 Qc6 29. Kh2 Re2 30. Rf2 Rxf2+ 31. Qxf2 Ne5 32. Bxe5 Rxe5 33. Kg3 Rg5+ 34. Kh4 Rh5+ 35. Kg4 f5+ 36. Kg3 Qh1 37. a4 Qh3+ 38. Kf4 Rh4+ 39. Kg5 Qg4+ 40. Kf6 Qe4 41. Qg3 Qf4 42. Qg2 Qe5+ 0-1

[Event "Nueva Helvecia Colonia Cup"]
[Site "Nueva Helvecia"]
[Date "2019.09.29"]
[Round "4"]
[White "Roselli, Federico"]
[Black "Costa, Maria"]
[Result "0-1"]
[ECO "B53"]
[WhiteElo "1088"]
[PlyCount "114"]
[EventDate "2019.09.28"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "URU"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 b6 4. Bc4 Bb7 5. Nc3 e6 6. Be3 d5 7. exd5 exd5 8. Bb3 Nf6 9. 0-0 Nbd7 10. Re1 Be7 11. Bg5 0-0 12. Ne5 Rc8 13. Qf3 cxd4 14. Nxd5 Bxd5 15. Bxd5 Nxd5 16. Bxe7 Nxe7 17. Nxd7 Qxd7 18. Qe4 Rfe8 19. Rad1 Ng6 20. Qd3 Nf4 21. Qf3 Ng6 22. h3 h6 23. Qd3 Red8 24. Re4 Qd5 25. Rxd4 Qxd4 26. Qxd4 Rxd4 27. Rxd4 Rxc2 28. Rd8+ Kh7 29. Rd7 Rxb2 30. Rxa7 Ne5 31. f4 Nc4 32. Ra4 b5 33. Ra6 b4 34. Ra4 Nb6 35. Ra6 b3 36. axb3 Rxb3 37. Ra7 f6 38. Rb7 Rb4 39. g3 Nd5 40. Rxb4 Nxb4 41. Kf2 Nc6 42. Kf3 g5 43. fxg5 hxg5 44. h4 gxh4 45. gxh4 Kg6 46. Kg4 f5+ 47. Kf4 Ne7 48. Kg3 Kh5 49. Kf3 Kxh4 50. Kf4 Kh5 51. Kf3 Kg5 52. Kg3 f4+ 53. Kf2 Kg4 54. Kg2 f3+ 55. Kf1 Kg3 56. Kg1 f2+ 57. Kf1 Nc6 0-1

[Event "Nueva Helvecia Colonia Cup"]
[Site "Nueva Helvecia"]
[Date "2019.09.28"]
[Round "1"]
[White "Viera, Oscar"]
[Black "Costa, Maria"]
[Result "1-0"]
[ECO "B50"]
[WhiteElo "1936"]
[PlyCount "55"]
[EventDate "2019.09.28"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "URU"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. g3 g6 4. Bg2 Bg7 5. 0-0 Nc6 6. c3 b6 7. e5 Bb7 8. exd6 Qxd6 9. Na3 a6 10. d4 e6 11. Nc4 Qc7 12. Bf4 Qd8 13. Nd6+ Kf8 14. Nxb7 Qd7 15. Nd6 Nge7 16. Nc4 Qd8 17. dxc5 Nd5 18. Nxb6 Nxb6 19. Qxd8+ Rxd8 20. cxb6 Rd7 21. Rfd1 Rb7 22. Bc7 Ke7 23. Nd2 Kd7 24. Nc4+ Kc8 25. Bxc6 Rxb6 26. Bxb6 Bf6 27. Rd7 Re8 28. Nd6+ 1-0

[Event "URU-ch U20/Girls"]
[Site "Nueva Helvecia"]
[Date "2018.04.23"]
[Round "6"]
[White "Costa, Maria"]
[Black "Bentancur, Candela"]
[Result "1-0"]
[ECO "C55"]
[PlyCount "31"]
[EventDate "2018.04.21"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "URU"]
[SourceTitle "CBM 184 Extra"]
[Source "ChessBase"]
[SourceDate "2018.06.28"]
[SourceVersion "1"]
[SourceVersionDate "2018.06.28"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Be7 5. 0-0 h6 6. Re1 0-0 7. Nbd2 d6 8. h3 Bd7 9. Nf1 Qc8 10. Nh4 Bxh3 11. Nf5 Nh5 12. Qxh5 g6 13. Nxh6+ Kh8 14. Nxf7+ Kg7 15. Bh6+ Kf6 16. Qg5# 1-0

[Event "URU-ch U20/Girls"]
[Site "Nueva Helvecia"]
[Date "2018.04.22"]
[Round "4"]
[White "Costa, Maria"]
[Black "Abraham, Santino"]
[Result "1-0"]
[ECO "C50"]
[PlyCount "87"]
[EventDate "2018.04.21"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "URU"]
[SourceTitle "CBM 184 Extra"]
[Source "ChessBase"]
[SourceDate "2018.06.28"]
[SourceVersion "1"]
[SourceVersionDate "2018.06.28"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. 0-0 Nf6 5. d3 0-0 6. Nbd2 h6 7. Re1 Nh5 8. Nf1 Qf6 9. Be3 Bxe3 10. Rxe3 Qg6 11. Nh4 Qg5 12. Rh3 Nf4 13. g3 Nxh3+ 14. Kg2 d6 15. Nf3 Qg6 16. Ne3 Bg4 17. Kf1 Nd4 18. Nxg4 Qxg4 19. Nxd4 Qxd1+ 20. Rxd1 c6 21. Nf5 Rad8 22. Kg2 d5 23. Ne7+ Kh7 24. exd5 Rfe8 25. Nf5 cxd5 26. Bb5 Re6 27. Kxh3 Rf6 28. g4 g6 29. Ne7 Rf3+ 30. Kg2 Rf4 31. Re1 Rxg4+ 32. Kh3 Rg5 33. Rf1 Rd6 34. f4 Rh5+ 35. Kg4 Rf6 36. f5 Rg5+ 37. Kf3 e4+ 38. dxe4 dxe4+ 39. Kxe4 Rg4+ 40. Ke5 Kg7 41. Rd1 h5 42. Rd8 Kh7 43. Kxf6 Kh6 44. Rh8# 1-0

[Event "URU-ch U20/Girls"]
[Site "Nueva Helvecia"]
[Date "2018.04.22"]
[Round "5"]
[White "Perez, Cecilia Manuela"]
[Black "Costa, Maria"]
[Result "1-0"]
[ECO "A05"]
[WhiteElo "1619"]
[PlyCount "49"]
[EventDate "2018.04.21"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "URU"]
[SourceTitle "CBM 184 Extra"]
[Source "ChessBase"]
[SourceDate "2018.06.28"]
[SourceVersion "1"]
[SourceVersionDate "2018.06.28"]
[SourceQuality "1"]

1. Nf3 c5 2. g3 d6 3. Bg2 Nf6 4. 0-0 g6 5. d3 Bg7 6. e4 0-0 7. Nbd2 Nc6 8. Nc4 b5 9. Ne3 Nd4 10. e5 Nxf3+ 11. Bxf3 Bh3 12. exf6 Bxf1 13. Bxa8 Qxa8 14. fxg7 Kxg7 15. Qxf1 d5 16. Ng4 d4 17. Bh6+ Kg8 18. Bxf8 Kxf8 19. Re1 h5 20. Qe2 e6 21. Qe5 Ke7 22. Qf6+ Kd7 23. Qxf7+ Kc6 24. Rxe6+ Kd5 25. Nf6# 1-0

[Event "URU-ch U20/Girls"]
[Site "Nueva Helvecia"]
[Date "2018.04.22"]
[Round "3"]
[White "Rodriguez Delfino, Tiago"]
[Black "Costa, Maria"]
[Result "1-0"]
[ECO "B22"]
[WhiteElo "1407"]
[PlyCount "53"]
[EventDate "2018.04.21"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "URU"]
[SourceTitle "CBM 184 Extra"]
[Source "ChessBase"]
[SourceDate "2018.06.28"]
[SourceVersion "1"]
[SourceVersionDate "2018.06.28"]
[SourceQuality "1"]

1. e4 c5 2. c3 d6 3. d4 cxd4 4. cxd4 Nf6 5. Nc3 g6 6. Be3 Bd7 7. Bd3 Nc6 8. Nge2 Bg7 9. 0-0 Qc7 10. Rc1 Ng4 11. h3 Nxe3 12. fxe3 0-0 13. Nd5 Qd8 14. Nec3 e6 15. Nf4 e5 16. dxe5 Bxe5 17. Qb3 Bxf4 18. exf4 Be6 19. Nd5 b6 20. Rxc6 Rc8 21. Rfc1 Qd7 22. Rxc8 Rxc8 23. Rxc8+ Kg7 24. Qc3+ Kh6 25. f5 gxf5 26. Qf6+ Kh5 27. Nf4# 1-0

[Event "URU-ch U20/Girls"]
[Site "Nueva Helvecia"]
[Date "2018.04.21"]
[Round "1"]
[White "Aguerre, Geronimo"]
[Black "Costa, Maria"]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "1597"]
[PlyCount "125"]
[EventDate "2018.04.21"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "URU"]
[SourceTitle "CBM 184 Extra"]
[Source "ChessBase"]
[SourceDate "2018.06.28"]
[SourceVersion "1"]
[SourceVersionDate "2018.06.28"]
[SourceQuality "1"]

1. d4 d5 2. Bf4 e6 3. e3 Nf6 4. Nd2 Be7 5. Ngf3 0-0 6. Ne5 Nc6 7. Ndf3 b6 8. Bd3 Bb7 9. c3 h6 10. Bb5 Qe8 11. Qa4 Ne4 12. Nxc6 Nd6 13. Nxe7+ Qxe7 14. Bc6 Rfd8 15. Bxd6 cxd6 16. Bxb7 Qxb7 17. 0-0 b5 18. Qc2 Rac8 19. Rac1 b4 20. Qd3 b3 21. Qb1 a5 22. axb3 Qxb3 23. Nd2 Qb6 24. Qa2 Rc7 25. Rb1 Ra8 26. Ra1 Rca7 27. Rfb1 Qb5 28. Qb3 Qa6 29. Ra4 Qe2 30. Nf1 Qa6 31. Rba1 Qc6 32. R1a3 Qc7 33. Qa2 e5 34. b4 exd4 35. cxd4 axb4 36. Rxa7 Rxa7 37. Rxa7 Qb6 38. Ra8+ Kh7 39. Qxd5 Qc7 40. g3 Qb6 41. Nd2 Qc7 42. Nb3 Qc3 43. Qxf7 Qc2 44. Ra7 Qd1+ 45. Kg2 Qg4 46. h4 Qg6 47. h5 Qg4 48. Ra8 Qe4+ 49. Kh3 Qxa8 50. Qg6+ Kg8 51. Qxd6 Qc8+ 52. g4 Qa8 53. Qxb4 Qf3+ 54. Kh2 Qxf2+ 55. Kh1 Qf1+ 56. Kh2 Qf2+ 57. Kh3 Qf3+ 58. Kh4 g5+ 59. hxg6 Qg2 60. Qc4+ Kh8 61. Qc8+ Kg7 62. Qd7+ Kf6 63. Qf7# 1-0

[Event "URU-ch U20/Girls"]
[Site "Nueva Helvecia"]
[Date "2018.04.21"]
[Round "2"]
[White "Costa, Maria"]
[Black "Roselli, Federico"]
[Result "1-0"]
[ECO "C54"]
[BlackElo "1133"]
[PlyCount "47"]
[EventDate "2018.04.21"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "URU"]
[SourceTitle "CBM 184 Extra"]
[Source "ChessBase"]
[SourceDate "2018.06.28"]
[SourceVersion "1"]
[SourceVersionDate "2018.06.28"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d3 d6 6. h3 Be6 7. Bb3 Qe7 8. 0-0 0-0-0 9. d4 Bxb3 10. axb3 exd4 11. cxd4 Bb6 12. Nc3 Nxe4 13. Re1 d5 14. Bg5 f6 15. Bf4 g5 16. Bd2 Qg7 17. Nxe4 dxe4 18. Rxe4 Bxd4 19. Nxd4 Nxd4 20. Rxa7 Kb8 21. Qa1 c6 22. Ra8+ Kc7 23. Qa5+ Kd7 24. Rxd4+ 1-0

