[Event "Pan American-ch Amateur U1700"]
[Site "San Jose"]
[Date "2019.10.23"]
[Round "2.19"]
[White "Aragon Masis, Sergio"]
[Black "Wong Yau, Daniel Segundo"]
[Result "0-1"]
[ECO "D02"]
[BlackElo "1476"]
[PlyCount "124"]
[EventDate "2019.10.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CRI"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 d5 3. Bf4 c5 4. e3 c4 5. c3 b5 6. Be2 Nc6 7. Nbd2 Bf5 8. Ne5 Qb6 9. Qc1 a5 10. Nxc6 Qxc6 11. 0-0 b4 12. a3 b3 13. Re1 h6 14. Be5 Nd7 15. Bg3 e6 16. f3 Be7 17. e4 Bh7 18. exd5 exd5 19. f4 Nb6 20. Bf3 Ra7 21. Nf1 0-0 22. Qd2 Rd7 23. Ne3 f5 24. Qf2 g5 25. h3 Bd6 26. Bh5 Kg7 27. Rad1 Qc7 28. Rf1 Qb8 29. Rde1 Re7 30. Qf3 Re4 31. Nd1 gxf4 32. Bh4 Bg6 33. Bxg6 Kxg6 34. Nf2 Rxe1 35. Rxe1 Re8 36. Re2 Qc8 37. Kf1 Re6 38. Nd1 Bc7 39. Rxe6+ Qxe6 40. Kf2 Na4 41. Qe2 Qe4 42. Qxe4 fxe4 43. Be7 Kf5 44. Bh4 Nb6 45. Ke2 Nd7 46. Be7 Nb6 47. Nf2 h5 48. Bh4 Nd7 49. Be7 Ke6 50. Bh4 Nf6 51. Nd1 Bd6 52. Kf2 Kf5 53. g3 e3+ 54. Ke2 fxg3 55. Kf3 Ne4 56. Nxe3+ Ke6 57. Nd1 Kd7 58. Kg2 Kc6 59. a4 Kd7 60. Ne3 Nxc3 61. Bxg3 Nxa4 62. Nd1 Nxb2 0-1

[Event "Pan American-ch Amateur U1700"]
[Site "San Jose"]
[Date "2019.10.23"]
[Round "1.13"]
[White "Villegas Rodriguez, Jeremy"]
[Black "Aragon Masis, Sergio"]
[Result "1/2-1/2"]
[ECO "C77"]
[WhiteElo "1553"]
[PlyCount "130"]
[EventDate "2019.10.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CRI"]
[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 d6 6. 0-0 Be7 7. c3 0-0 8. Nbd2 b5 9. Bc2 Bd7 10. Re1 h6 11. Nf1 Re8 12. Ng3 Na5 13. a4 c5 14. d4 Qc7 15. d5 Nb7 16. axb5 axb5 17. Be3 Rec8 18. Qd2 Ng4 19. Nf5 Bxf5 20. exf5 Nxe3 21. fxe3 Ra5 22. g4 Rca8 23. Rxa5 Rxa5 24. h4 Qd8 25. Qf2 c4 26. Qg3 f6 27. Nd2 Nc5 28. Rb1 Qa8 29. e4 Ra1 30. Qe1 Ra2 31. Nf3 Qa7 32. Kg2 Bd8 33. Qd2 Qe7 34. Qc1 Kh7 35. Ra1 Qa7 36. Rb1 Nd7 37. g5 Bb6 38. Qe1 Be3 39. Qg3 Bf4 40. Qg4 Nf8 41. gxf6 gxf6 42. Kh3 Qg7 43. Qg2 Qxg2+ 44. Kxg2 Nd7 45. Kf2 Kg7 46. Ke2 Nc5 47. h5 Kf7 48. Nd2 Na4 49. Bxa4 Rxa4 50. Nf1 b4 51. cxb4 Rxb4 52. Nd2 Ke7 53. Nf3 c3 54. Kd3 Rxb2 55. Rxb2 cxb2 56. Kc2 Bc1 57. Ne1 Kd7 58. Nd3 Kc7 59. Nxb2 Bxb2 60. Kxb2 Kb6 61. Kc2 Ka6 62. Kc3 Ka5 63. Kc4 Ka4 64. Kc3 Ka5 65. Kc4 Ka4 1/2-1/2

[Event "Heredia op 1st"]
[Site "Heredia"]
[Date "2004.07.28"]
[Round "2"]
[White "Ruiz Barquero, Carlos"]
[Black "Aragon Masis, Sergio"]
[Result "1-0"]
[ECO "C42"]
[WhiteElo "2050"]
[BlackElo "1890"]
[PlyCount "41"]
[EventDate "2004.07.26"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "CRI"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Nc6 7. 0-0 Bg4 8. c4 Nb4 9. cxd5 Nf6 10. Nc3 Nbxd5 11. h3 Bh5 12. Re1+ Be7 13. Bc4 Nxc3 14. bxc3 0-0 15. g4 Bg6 16. Ne5 Ne4 17. Nxg6 Nxc3 18. Nxe7+ Qxe7 19. Rxe7 Nxd1 20. Ba3 Nc3 21. Re3 1-0

