[Event "Pan American-ch Amateur U1700"]
[Site "San Jose"]
[Date "2019.10.23"]
[Round "1.35"]
[White "Alvarez Ugalde, Isaac"]
[Black "Valverde Herrera, Jose Daniel"]
[Result "1-0"]
[ECO "C55"]
[WhiteElo "1223"]
[PlyCount "159"]
[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. Bc4 Be7 4. Nc3 Nf6 5. 0-0 0-0 6. d3 Re8 7. h3 d6 8. Ng5 Rf8 9. f4 h6 10. Nf3 Bd7 11. f5 Na5 12. Bd5 Nxd5 13. Nxd5 Nc6 14. Nh2 Bg5 15. Bxg5 hxg5 16. Qh5 Ne7 17. f6 Nxd5 18. fxg7 Kxg7 19. exd5 Qe7 20. Rf2 f6 21. Raf1 Rf7 22. Qf3 Raf8 23. Ng4 f5 24. Ne3 e4 25. dxe4 fxe4 26. Qg3 c6 27. Rxf7+ Rxf7 28. Rxf7+ Kxf7 29. dxc6 Bxc6 30. Nf5 Qf6 31. Nxd6+ Kg7 32. Nc4 Bb5 33. Ne3 Qf4 34. Kh2 Qxg3+ 35. Kxg3 Kf6 36. Kg4 Bd7+ 37. Kg3 Be6 38. Kf2 Ke5 39. a3 b5 40. c3 a5 41. g4 Kf4 42. Ng2+ Ke5 43. Ke3 Bc4 44. Ne1 Bf1 45. Kf2 Bxh3 46. Kg3 Bf1 47. Nc2 Bd3 48. Nd4 b4 49. axb4 axb4 50. Nc6+ Kd6 51. Nxb4 Kc5 52. Nxd3+ exd3 53. Kf2 Kd5 54. Ke3 Ke5 55. Kxd3 Kf4 56. Ke2 Kxg4 57. Kf2 Kf4 58. b4 Ke5 59. c4 Kd6 60. Kg3 Kc6 61. Kg4 Kb6 62. Kxg5 Kc6 63. Kf5 Kb6 64. Ke5 Kb7 65. Kd5 Kc7 66. c5 Kb7 67. b5 Kc7 68. c6 Kc8 69. Kc5 Kc7 70. b6+ Kb8 71. Kd6 Kc8 72. b7+ Kb8 73. Kd7 Ka7 74. Kc7 Ka6 75. b8Q Ka5 76. Kd6 Ka4 77. Kc5 Ka3 78. Kc4 Ka2 79. Kc3 Ka1 80. Qb2# 1-0

[Event "Pan American-ch Amateur U1700"]
[Site "San Jose"]
[Date "2019.10.23"]
[Round "2.12"]
[White "Vasquez Jaen, Lourdes Lorena"]
[Black "Alvarez Ugalde, Isaac"]
[Result "1-0"]
[ECO "C47"]
[WhiteElo "1482"]
[BlackElo "1223"]
[PlyCount "53"]
[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. d4 exd4 4. Nxd4 Bc5 5. Be3 Bb6 6. Bc4 Nf6 7. Nc3 0-0 8. f3 h6 9. Qd2 Ba5 10. 0-0-0 Bxc3 11. Qxc3 d5 12. Nf5 Bxf5 13. exf5 Qd7 14. g4 Rfd8 15. Qe1 Qe7 16. Bd3 Nb4 17. Kb1 Qd6 18. g5 hxg5 19. Bxg5 d4 20. Qh4 Nxd3 21. Rxd3 c5 22. Rg1 c4 23. Bxf6 Qxf6 24. Qxf6 g6 25. fxg6 fxg6 26. Rxg6+ Kh7 27. Qg7# 1-0

