[Event "NCA-ch U20"]
[Site "Managua"]
[Date "2019.07.07"]
[Round "8.8"]
[White "Alvarez Olivera, Andrea De San Mateo"]
[Black "Hernandez Aleman, Rosa Nelbia"]
[Result "1-0"]
[ECO "C60"]
[PlyCount "73"]
[EventDate "2019.06.22"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NCA"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nge7 4. 0-0 d6 5. h3 a6 6. Ba4 b5 7. Bb3 Bb7 8. d3 Ng6 9. Be3 Be7 10. Nbd2 0-0 11. a3 Na5 12. Ba2 c5 13. b4 Nc6 14. c3 Nh4 15. Ne1 cxb4 16. g3 bxc3 17. Nb1 Ng6 18. Nxc3 b4 19. axb4 Nxb4 20. Bc4 Bg5 21. Qd2 Bxe3 22. Qxe3 Qd7 23. Kh2 Ne7 24. Nf3 d5 25. Nxe5 Qd6 26. exd5 Nbxd5 27. Qe1 Rac8 28. f4 Rfe8 29. Ne4 Qb6 30. Rb1 Qe3 31. Rxb7 Qxe1 32. Rxe1 f6 33. Nf3 Kh8 34. Nd6 Rxc4 35. dxc4 Rd8 36. Nf7+ Kg8 37. Nxd8 1-0

[Event "NCA-ch U20"]
[Site "Managua"]
[Date "2019.07.07"]
[Round "9.9"]
[White "Pavon Ruiz, Cristhoffer Israel"]
[Black "Alvarez Olivera, Andrea De San Mateo"]
[Result "1-0"]
[ECO "C27"]
[PlyCount "43"]
[EventDate "2019.06.22"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NCA"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 e5 2. Bc4 Nf6 3. Nc3 Bb4 4. Nd5 Nxe4 5. Nxb4 d6 6. Qf3 Nf6 7. h3 Nbd7 8. Nd5 e4 9. Nxf6+ Nxf6 10. Qe2 Bf5 11. d3 Qe7 12. Be3 0-0-0 13. 0-0-0 d5 14. dxe4 Bxe4 15. f3 Bf5 16. Bd3 Be6 17. Bxa7 d4 18. Bf5 Nd7 19. Rxd4 g6 20. Bxe6 fxe6 21. Qc4 b6 22. Qa6# 1-0

[Event "NCA-ch U20"]
[Site "Managua"]
[Date "2019.06.30"]
[Round "5.10"]
[White "Ramirez Rodriguez, Maria Jose"]
[Black "Alvarez Olivera, Andrea De San Mateo"]
[Result "0-1"]
[ECO "C42"]
[PlyCount "54"]
[EventDate "2019.06.22"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NCA"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. d3 Bb4 5. Bg5 g6 6. Bxf6 Qxf6 7. d4 exd4 8. e5 Qe6 9. a3 Ba5 10. Bd3 dxc3 11. b4 Bb6 12. 0-0 Nxe5 13. Re1 d6 14. Rb1 Bd7 15. Re4 0-0-0 16. Qf1 Bc6 17. Rbe1 Bxe4 18. Bxe4 Qf6 19. Nxe5 Qxe5 20. Bd3 Qf6 21. Be2 Rhe8 22. Bg4+ Kb8 23. Re2 Re5 24. Qe1 Rde8 25. Kf1 Rxe2 26. Bxe2 a6 27. Qd1 Qxf2# 0-1

[Event "NCA-ch U20"]
[Site "Managua"]
[Date "2019.06.30"]
[Round "6.8"]
[White "Serrano Herrera, Daniela de Andrea"]
[Black "Alvarez Olivera, Andrea De San Mateo"]
[Result "1-0"]
[ECO "C77"]
[WhiteElo "1149"]
[PlyCount "47"]
[EventDate "2019.06.22"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NCA"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. Nc3 Bb4 6. d3 h6 7. Bxc6 bxc6 8. Bd2 0-0 9. 0-0 d6 10. a3 Ba5 11. Ne2 Bb6 12. Re1 Bg4 13. Ng3 Qd7 14. Be3 Ba5 15. c3 c5 16. b4 Bb6 17. h3 Bxf3 18. Qxf3 Rab8 19. Nf5 Kh8 20. Qg3 Rg8 21. Qh4 Qd8 22. Bxh6 gxh6 23. Nxh6 Rg6 24. Nxf7+ 1-0

[Event "NCA-ch U20"]
[Site "Managua"]
[Date "2019.06.29"]
[Round "4.9"]
[White "Alvarez Olivera, Andrea De San Mateo"]
[Black "Martinez Thomas, Gregory Aubrey"]
[Result "0-1"]
[ECO "C48"]
[PlyCount "58"]
[EventDate "2019.06.22"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NCA"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. Nc3 Nf6 5. Bxc6 dxc6 6. Nxe5 Bxf2+ 7. Kxf2 Qd4+ 8. Ke1 Qxe5 9. d3 0-0 10. g3 Ng4 11. Qf3 f5 12. Bf4 fxe4 13. Nxe4 Qxb2 14. Kd2 Ne5 15. Qe3 Bg4 16. Rab1 Nf3+ 17. Qxf3 Qxb1 18. Rxb1 Bxf3 19. Ng5 Bg4 20. Rxb7 h6 21. Ne6 Bxe6 22. Rxc7 Rfc8 23. Re7 Bxa2 24. Be5 Bf7 25. h4 Re8 26. Rxe8+ Rxe8 27. Bf4 Re7 28. g4 Rb7 29. Ke3 a5 0-1

[Event "NCA-ch U20"]
[Site "Managua"]
[Date "2019.06.23"]
[Round "2.7"]
[White "Alvarez Olivera, Andrea De San Mateo"]
[Black "Vanegas Lopez, Natanael Emanuel"]
[Result "0-1"]
[ECO "C42"]
[BlackElo "1320"]
[PlyCount "112"]
[EventDate "2019.06.22"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NCA"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 d6 3. Nc3 Nf6 4. g3 Be7 5. d3 b6 6. Bg2 Bb7 7. 0-0 0-0 8. Bg5 h6 9. Bxf6 Bxf6 10. h4 Nd7 11. Ne2 Re8 12. c3 Nc5 13. b4 Ne6 14. Qc2 a5 15. b5 Nc5 16. Ne1 d5 17. d4 exd4 18. cxd4 Ne6 19. e5 Be7 20. Nd3 Rc8 21. a4 c5 22. Qb2 cxd4 23. Nxd4 Nxd4 24. Qxd4 Bc5 25. Qf4 Rc7 26. Rfe1 d4 27. f3 Bd5 28. Rad1 Bb3 29. Ra1 Bc4 30. Nxc5 bxc5 31. Re4 Bd5 32. Ree1 Re6 33. Bh3 Rb6 34. Rad1 Be6 35. Bxe6 Rxe6 36. Qg4 d3 37. Rd2 c4 38. Qe4 f6 39. Qg6 Rxe5 40. Rxe5 fxe5 41. Qe6+ Kh8 42. Qxe5 Qe7 43. Qd4 Qe1+ 44. Kg2 Qxd2+ 45. Kh3 Rc8 46. b6 Qe1 47. Qd6 d2 48. Qd7 Qh1+ 49. Kg4 Rf8 50. f4 d1Q+ 51. Qxd1 Qxd1+ 52. Kh3 h5 53. Kg2 Qe2+ 54. Kh3 Rd8 55. b7 Qf1+ 56. Kh2 Rd2# 0-1

[Event "NCA-ch U20"]
[Site "Managua"]
[Date "2019.06.23"]
[Round "3.10"]
[White "Tamaris Zavala, Octavio Jose"]
[Black "Alvarez Olivera, Andrea De San Mateo"]
[Result "0-1"]
[ECO "C42"]
[PlyCount "58"]
[EventDate "2019.06.22"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NCA"]
[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. b3 0-0 5. Bc4 Nc6 6. Bb2 d6 7. 0-0 Bg4 8. h3 Bh5 9. Ne2 Nxe4 10. Bd3 Bxf3 11. gxf3 Nxd2 12. Ng3 Nxf1 13. Kxf1 Qh4 14. Nf5 Qxh3+ 15. Kg1 g6 16. Ng3 Ne7 17. Bf1 Qe6 18. Kh2 Nf5 19. Bh3 Qe7 20. Nxf5 gxf5 21. Qg1+ Kh8 22. Re1 Rg8 23. Qf1 Bxe1 24. Qxe1 Qh4 25. Qd2 Rae8 26. f4 Rg6 27. Qd5 Qxf4+ 28. Kh1 Qxf2 29. Bg2 Rh6+ 0-1

[Event "NCA-ch U20"]
[Site "Managua"]
[Date "2019.06.22"]
[Round "1.2"]
[White "Escorcia Obando, Carlos David"]
[Black "Alvarez Olivera, Andrea De San Mateo"]
[Result "1-0"]
[ECO "C77"]
[WhiteElo "1840"]
[PlyCount "53"]
[EventDate "2019.06.22"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NCA"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. d3 Bd6 6. 0-0 0-0 7. Nc3 Bb4 8. Bg5 h6 9. Bxf6 Qxf6 10. Nd5 Qe6 11. Nxc7 Qe7 12. Nxa8 b5 13. Bb3 d6 14. Nb6 Qb7 15. Nd5 Be6 16. c3 Ba5 17. d4 Bb6 18. Nxb6 Qxb6 19. d5 Bd7 20. dxc6 Bxc6 21. Qxd6 Rd8 22. Bxf7+ Kxf7 23. Nxe5+ Kg8 24. Qxc6 Qxc6 25. Nxc6 Re8 26. f3 Kh7 27. Rad1 1-0

