[Event "Online Olym Disabilities"]
[Site "Tornelo INT"]
[Date "2020.11.27"]
[Round "7.25"]
[White "Leyton Calderon, Jairo Oswaldo"]
[Black "Sargissyan, Sargis"]
[Result "0-1"]
[ECO "A06"]
[WhiteElo "1526"]
[BlackElo "2269"]
[PlyCount "58"]
[EventDate "2020.11.21"]
[EventType "team-swiss (rapid)"]
[EventRounds "7"]
[EventCountry "NET"]
[SourceTitle "CBM 199 Extra"]
[Source "ChessBase"]
[SourceDate "2021.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2021.01.31"]
[SourceQuality "1"]
[WhiteTeam "Nicaragua"]
[BlackTeam "Armenia"]
[WhiteTeamCountry "NCA"]
[BlackTeamCountry "ARM"]

1. Nf3 Nf6 2. b3 d5 3. Bb2 Bf5 4. e3 Nbd7 5. c4 e6 6. Be2 h6 7. Nc3 c6 8. 0-0 Bd6 9. d4 0-0 10. h3 a6 11. Rc1 b5 12. cxb5 cxb5 13. Bd3 Ne4 14. Qe2 Qa5 15. Bb1 Rac8 16. Nxe4 Bxe4 17. Ba1 Ba3 18. Bb2 Bb4 19. Ba1 Bxb1 20. Rxb1 Rc7 21. Rbc1 Rfc8 22. Rxc7 Qxc7 23. Bb2 Qc2 24. Qxc2 Rxc2 25. Rb1 Kf8 26. Ne5 Nxe5 27. dxe5 Ke7 28. Kf1 Kd7 29. Ra1 Rxb2 0-1

[Event "Online Olym Disabilities"]
[Site "Tornelo INT"]
[Date "2020.11.26"]
[Round "6.28"]
[White "Oun, Adel"]
[Black "Leyton Calderon, Jairo Oswaldo"]
[Result "0-1"]
[ECO "A00"]
[BlackElo "1526"]
[PlyCount "86"]
[EventDate "2020.11.21"]
[EventType "team-swiss (rapid)"]
[EventRounds "7"]
[EventCountry "NET"]
[SourceTitle "CBM 199 Extra"]
[Source "ChessBase"]
[SourceDate "2021.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2021.01.31"]
[SourceQuality "1"]
[WhiteTeam "Libya"]
[BlackTeam "Nicaragua"]
[WhiteTeamCountry "LBY"]
[BlackTeamCountry "NCA"]

1. g3 Nf6 2. Bg2 g6 3. b3 Bg7 4. Bb2 0-0 5. Na3 c5 6. Nc4 Nc6 7. e3 Qc7 8. Nf3 d6 9. h3 b5 10. Na3 Rb8 11. Bf1 a6 12. c4 b4 13. Nc2 Be6 14. d3 Nd7 15. Bxg7 Kxg7 16. Ng5 Nf6 17. g4 Bd7 18. d4 cxd4 19. Qd3 dxe3 20. Qxe3 e6 21. h4 h5 22. gxh5 Nxh5 23. Be2 Rh8 24. Qe4 e5 25. Qd5 Rbf8 26. 0-0-0 Ne7 27. Qg2 Bc6 28. f3 Nf5 29. Rh3 Nf4 30. Ne6+ fxe6 31. Qg5 Nxh3 32. Qg4 Nf4 33. Rd2 Rxh4 34. Qg1 Rfh8 35. Kb2 Rh2 36. Ne3 Nxe3 37. Rxd6 Rxe2+ 38. Ka1 Nc2+ 39. Kb1 Qxd6 40. Qa7+ Kf6 41. Qg1 Qd2 42. a3 Nxa3+ 43. Ka1 Qb2# 0-1

[Event "Online Olym Disabilities"]
[Site "Tornelo INT"]
[Date "2020.11.25"]
[Round "5.27"]
[White "Leyton Calderon, Jairo Oswaldo"]
[Black "Ali Sheikh, Sadam"]
[Result "1-0"]
[ECO "D05"]
[WhiteElo "1526"]
[PlyCount "111"]
[EventDate "2020.11.21"]
[EventType "team-swiss (rapid)"]
[EventRounds "7"]
[EventCountry "NET"]
[SourceTitle "CBM 199 Extra"]
[Source "ChessBase"]
[SourceDate "2021.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2021.01.31"]
[SourceQuality "1"]
[WhiteTeam "Nicaragua"]
[BlackTeam "Kenya"]
[WhiteTeamCountry "NCA"]
[BlackTeamCountry "KEN"]

1. Nf3 e6 2. b3 d5 3. Bb2 Nf6 4. e3 c5 5. d4 Nc6 6. Be2 cxd4 7. Nxd4 Bb4+ 8. c3 Ba5 9. 0-0 Nxd4 10. cxd4 Bd7 11. Nd2 a6 12. Rc1 Rc8 13. Nf3 h6 14. Rxc8 Qxc8 15. Qb1 Bb5 16. Bxb5+ axb5 17. Rc1 Qb8 18. Qd3 0-0 19. Qxb5 b6 20. a3 Qe8 21. Qxe8 Rxe8 22. b4 Bxb4 23. axb4 Ne4 24. Kf1 b5 25. Ke2 Nd6 26. Rc5 Nc4 27. Bc3 Ra8 28. Rxb5 Ra2+ 29. Nd2 f6 30. Kd3 f5 31. f4 Kf7 32. g3 Nd6 33. Ra5 Rxa5 34. bxa5 Nb5 35. Bb4 Ke8 36. Nb3 Kd8 37. Nc5 Nc7 38. a6 Kc8 39. Ba5 Na8 40. Nxe6 g6 41. Kc3 Kb8 42. Kb4 Ka7 43. Nc5 g5 44. Kb5 g4 45. Kc6 h5 46. Kxd5 Nb6+ 47. Bxb6+ Kxb6 48. Kd6 h4 49. gxh4 Ka7 50. h5 g3 51. hxg3 Kb8 52. h6 Ka7 53. h7 Kb6 54. h8Q Ka7 55. Qh7+ Kb8 56. Qb7# 1-0

[Event "Online Olym Disabilities"]
[Site "Tornelo INT"]
[Date "2020.11.24"]
[Round "4.28"]
[White "Leyton Calderon, Jairo Oswaldo"]
[Black "Bonilla, Cesar"]
[Result "1-0"]
[ECO "A36"]
[WhiteElo "1526"]
[BlackElo "1172"]
[PlyCount "57"]
[EventDate "2020.11.21"]
[EventType "team-swiss (rapid)"]
[EventRounds "7"]
[EventCountry "NET"]
[SourceTitle "CBM 199 Extra"]
[Source "ChessBase"]
[SourceDate "2021.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2021.01.31"]
[SourceQuality "1"]
[WhiteTeam "Nicaragua"]
[BlackTeam "El Salvador"]
[WhiteTeamCountry "NCA"]
[BlackTeamCountry "ESA"]

1. c4 c5 2. g3 Nc6 3. Bg2 g6 4. e4 Bg7 5. Ne2 Nf6 6. Nbc3 0-0 7. 0-0 d6 8. d3 Bd7 9. h3 Nd4 10. Be3 Bc6 11. Nxd4 cxd4 12. Bxd4 Nd7 13. Bxg7 Kxg7 14. b4 b6 15. a4 a5 16. b5 Bb7 17. d4 f5 18. Nd5 e6 19. Nc3 fxe4 20. Bxe4 Bxe4 21. Nxe4 Nf6 22. Qe2 d5 23. cxd5 exd5 24. Nxf6 Qxf6 25. Qe5 Rae8 26. Qxf6+ Rxf6 27. Rfe1 Rxe1+ 28. Rxe1 Rc6 29. bxc6 1-0

[Event "Online Olym Disabilities"]
[Site "Tornelo INT"]
[Date "2020.11.23"]
[Round "3.19"]
[White "Muming, Ardian Syah"]
[Black "Leyton Calderon, Jairo Oswaldo"]
[Result "1-0"]
[ECO "E60"]
[WhiteElo "1431"]
[BlackElo "1526"]
[PlyCount "81"]
[EventDate "2020.11.21"]
[EventType "team-swiss (rapid)"]
[EventRounds "7"]
[EventCountry "NET"]
[SourceTitle "CBM 199 Extra"]
[Source "ChessBase"]
[SourceDate "2021.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2021.01.31"]
[SourceQuality "1"]
[WhiteTeam "Malaysia"]
[BlackTeam "Nicaragua"]
[WhiteTeamCountry "MAS"]
[BlackTeamCountry "NCA"]

1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. g3 0-0 5. Bg2 d6 6. 0-0 Nbd7 7. Re1 e5 8. e3 Re8 9. Nc3 exd4 10. exd4 Rxe1+ 11. Qxe1 Nb6 12. b3 Bf5 13. Bg5 h6 14. Be3 c6 15. Qd2 Kh7 16. Nh4 Bd7 17. Re1 d5 18. c5 Nc8 19. f4 Ne7 20. Nf3 Nf5 21. Bf2 Qf8 22. Ne5 Be6 23. Qd3 Re8 24. g4 Ne7 25. Bh3 Nd7 26. f5 Nxe5 27. dxe5 gxf5 28. gxf5 Nxf5 29. Bxf5+ Kh8 30. Qh3 Bxf5 31. Qxf5 Re6 32. b4 Qe7 33. Bg3 Rg6 34. Kg2 Rg5 35. Qf4 Qd7 36. a3 Rf5 37. Qd2 Qe6 38. Qd4 Qg6 39. Re3 Qg5 40. Nd1 Rf4 41. Qxf4 1-0

[Event "Online Olym Disabilities"]
[Site "Tornelo INT"]
[Date "2020.11.22"]
[Round "2.25"]
[White "Leyton Calderon, Jairo Oswaldo"]
[Black "Dal, Ibrahim"]
[Result "0-1"]
[ECO "A13"]
[WhiteElo "1526"]
[BlackElo "1626"]
[PlyCount "44"]
[EventDate "2020.11.21"]
[EventType "team-swiss (rapid)"]
[EventRounds "7"]
[EventCountry "NET"]
[SourceTitle "CBM 199 Extra"]
[Source "ChessBase"]
[SourceDate "2021.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2021.01.31"]
[SourceQuality "1"]
[WhiteTeam "Nicaragua"]
[BlackTeam "Turkey III"]
[WhiteTeamCountry "NCA"]
[BlackTeamCountry "TUR"]

1. Nf3 Nf6 2. b3 d5 3. Bb2 e6 4. e3 c5 5. Be2 Nc6 6. 0-0 Be7 7. d4 0-0 8. c4 cxd4 9. Nxd4 Nxd4 10. Qxd4 dxc4 11. Bxc4 Bd7 12. Nc3 Bc6 13. Rfd1 Qa5 14. Qd2 Qg5 15. g3 Rad8 16. Qe1 Bb4 17. a3 Ba5 18. b4 Bc7 19. Rxd8 Rxd8 20. Rd1 Qh5 21. Rxd8+ Bxd8 22. Bf1 Qf3 0-1

[Event "Online Olym Disabilities"]
[Site "Tornelo INT"]
[Date "2020.11.21"]
[Round "1.25"]
[White "Montenegro, Juan Carlos"]
[Black "Leyton Calderon, Jairo Oswaldo"]
[Result "0-1"]
[ECO "B20"]
[WhiteElo "1636"]
[BlackElo "1526"]
[PlyCount "122"]
[EventDate "2020.11.21"]
[EventType "team-swiss (rapid)"]
[EventRounds "7"]
[EventCountry "NET"]
[SourceTitle "CBM 199 Extra"]
[Source "ChessBase"]
[SourceDate "2021.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2021.01.31"]
[SourceQuality "1"]
[WhiteTeam "Argentina"]
[BlackTeam "Nicaragua"]
[WhiteTeamCountry "ARG"]
[BlackTeamCountry "NCA"]

1. e4 c5 2. g3 g6 3. d4 cxd4 4. Qxd4 Nf6 5. Nc3 Nc6 6. Qd2 Bg7 7. Bg2 0-0 8. Nge2 d6 9. 0-0 Bd7 10. a3 Rc8 11. Rb1 a6 12. Rd1 Ne5 13. b3 Bg4 14. Bb2 Nf3+ 15. Bxf3 Bxf3 16. Qe3 Bg4 17. e5 Ne8 18. f3 Be6 19. Nd5 Bxd5 20. Rxd5 Qc7 21. c4 dxe5 22. Rbd1 Nd6 23. Bxe5 Bxe5 24. Qxe5 Rfd8 25. Kg2 f6 26. Qe3 Nf7 27. Nf4 Rxd5 28. Rxd5 Re8 29. Qe6 Rd8 30. Rxd8+ Qxd8 31. Nd5 Kf8 32. b4 Ng5 33. Qe2 Qd6 34. Nf4 e5 35. c5 Qc6 36. Nd3 Ne6 37. Nf2 Nd4 38. Qd3 f5 39. h4 Kf7 40. Qc4+ Kg7 41. Qc3 Kf6 42. g4 Ne2 43. Qe3 Nf4+ 44. Kg3 Nd5 45. Qg5+ Kf7 46. Nd3 f4+ 47. Kh3 Qf6 48. Nxe5+ Ke6 49. Qxf6+ Nxf6 50. Nd3 Nd5 51. Kg2 h6 52. Kf2 g5 53. hxg5 hxg5 54. a4 Nc3 55. a5 Nd5 56. Ke2 Nc7 57. Kd2 Kd5 58. Kc3 Nb5+ 59. Kd2 Nd4 60. Ne1 Nc6 61. Kc3 Nd4 0-1

[Event "Pan American IBCA-ch 8th"]
[Site "San Jose"]
[Date "2019.11.02"]
[Round "6.8"]
[White "Bonilla, Cesar"]
[Black "Leyton Calderon, Jairo Oswaldo"]
[Result "0-1"]
[ECO "E61"]
[BlackElo "1539"]
[PlyCount "84"]
[EventDate "2019.10.30"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "CRI"]
[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. h3 0-0 5. c4 d6 6. Nc3 Nbd7 7. Nf3 Re8 8. Be2 c6 9. 0-0 a5 10. Qc2 Nh5 11. Bh2 f5 12. Rfd1 Ndf6 13. Rac1 Bd7 14. Rd2 Rf8 15. Rcd1 Qc8 16. c5 d5 17. Na4 Qd8 18. Nb6 Ne4 19. Rd3 Ra7 20. Ne5 Be8 21. Nf3 Nhf6 22. Ra3 Nd7 23. b4 Nxb6 24. cxb6 Qxb6 25. bxa5 Qd8 26. Nd2 Nxd2 27. Qxd2 b5 28. Qb4 Rf7 29. Rdd3 e6 30. Qc5 Rxa5 31. Qb4 Rfa7 32. Bf3 Bf8 33. Rxa5 Rxa5 34. Qd2 Qa8 35. Bf4 Rxa2 36. Qe1 Ra1 37. Rd1 Rxd1 38. Qxd1 Qa3 39. g4 Bd7 40. h4 b4 41. h5 b3 42. Qxb3 Qxb3 0-1

[Event "Pan American IBCA-ch 8th"]
[Site "San Jose"]
[Date "2019.11.02"]
[Round "7.5"]
[White "Leyton Calderon, Jairo Oswaldo"]
[Black "Loasiga Perez, Carlos Alberto"]
[Result "1-0"]
[ECO "A06"]
[WhiteElo "1539"]
[BlackElo "1399"]
[PlyCount "101"]
[EventDate "2019.10.30"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "CRI"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. b3 d5 2. Bb2 c5 3. Nf3 Nc6 4. e3 d4 5. Be2 e5 6. exd4 cxd4 7. d3 g6 8. 0-0 Bg7 9. Nbd2 Nge7 10. Re1 0-0 11. Bf1 Bg4 12. h3 Be6 13. Nc4 Nd5 14. Nfxe5 Nxe5 15. Nxe5 Bxe5 16. Rxe5 Nc3 17. Bxc3 dxc3 18. Qf3 b6 19. g3 Rc8 20. Bg2 Re8 21. Rae1 Bd7 22. Rxe8+ Bxe8 23. Qf4 Bc6 24. Qe5 Bxg2 25. Kxg2 Rc5 26. Qe8+ Qxe8 27. Rxe8+ Kg7 28. Re2 a5 29. a4 Kf6 30. f4 h5 31. Kf3 b5 32. axb5 Rxb5 33. Re4 Kg7 34. Rc4 f6 35. g4 hxg4+ 36. hxg4 g5 37. f5 Re5 38. Rxc3 Kf7 39. Rc4 Kf8 40. Kf2 Kf7 41. Re4 Rd5 42. Ke3 Rd8 43. d4 Rh8 44. Kd3 Rh3+ 45. Kc4 Rf3 46. d5 Rf4 47. Rxf4 gxf4 48. Kd4 Ke7 49. Ke4 f3 50. Kxf3 Kd6 51. c4 1-0

[Event "Pan American IBCA-ch 8th"]
[Site "San Jose"]
[Date "2019.11.01"]
[Round "5.5"]
[White "Leyton Calderon, Jairo Oswaldo"]
[Black "Cabrera Sosa, Marco Vinicio"]
[Result "0-1"]
[ECO "E61"]
[WhiteElo "1539"]
[BlackElo "1334"]
[PlyCount "56"]
[EventDate "2019.10.30"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "CRI"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. Nf3 b6 2. b3 Bb7 3. Bb2 e6 4. e3 Nf6 5. Be2 g6 6. 0-0 Bg7 7. d4 0-0 8. c4 d6 9. Nc3 Nbd7 10. Qc2 Qe7 11. Rad1 Nh5 12. e4 Nf4 13. Rfe1 Nxe2+ 14. Qxe2 Nf6 15. Rd3 Rad8 16. e5 Nh5 17. Bc1 f6 18. exd6 Qxd6 19. Nb5 Nf4 20. Qd1 Nh3+ 21. gxh3 Qd7 22. Qe2 e5 23. dxe5 Qxh3 24. Qf1 Qf5 25. Nbd4 Qh5 26. Qg2 fxe5 27. Qg5 Qxg5+ 28. Bxg5 exd4 0-1

[Event "Pan American IBCA-ch 8th"]
[Site "San Jose"]
[Date "2019.11.01"]
[Round "4.7"]
[White "Vaquero, Roberto"]
[Black "Leyton Calderon, Jairo Oswaldo"]
[Result "0-1"]
[ECO "A48"]
[BlackElo "1539"]
[PlyCount "104"]
[EventDate "2019.10.30"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "CRI"]
[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. Bd3 d6 6. Nbd2 Nbd7 7. c3 Re8 8. Qc2 c5 9. 0-0-0 Qc7 10. Ne4 e5 11. dxe5 dxe5 12. Nxf6+ Bxf6 13. Bg5 Bg7 14. e4 c4 15. Be2 b5 16. a4 a6 17. b4 cxb3 18. Qxb3 Nc5 19. Qd5 Nxa4 20. c4 Be6 21. Qd6 Rac8 22. Qxc7 Rxc7 23. Rd8 Rxd8 24. Bxd8 Rc8 25. Ba5 Bxc4 26. Bxc4 Rxc4+ 27. Kb1 Nc3+ 28. Bxc3 Rxc3 29. Rc1 Rxc1+ 30. Kxc1 f6 31. Nd2 Kf7 32. Kb2 Ke6 33. Kb3 Bf8 34. f3 Kd7 35. Ka2 Kc6 36. Nb3 Bb4 37. g3 a5 38. f4 exf4 39. gxf4 Kd6 40. h3 Bc3 41. Ka3 g5 42. e5+ fxe5 43. fxe5+ Kxe5 44. Nc1 Ke4 45. Ne2 Be5 46. Kb3 Kf3 47. Ng1+ Kg2 48. Ne2 Kxh3 49. Ng1+ Kg4 50. Ne2 h5 51. Ng1 h4 52. Ka2 h3 0-1

[Event "Pan American IBCA-ch 8th"]
[Site "San Jose"]
[Date "2019.10.31"]
[Round "2.9"]
[White "Arias Barba, Ivan Gerardo"]
[Black "Leyton Calderon, Jairo Oswaldo"]
[Result "0-1"]
[ECO "B34"]
[BlackElo "1539"]
[PlyCount "74"]
[EventDate "2019.10.30"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "CRI"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 g6 3. d4 cxd4 4. Nxd4 Bg7 5. Nf3 Nc6 6. Nc3 Nf6 7. Bc4 0-0 8. 0-0 d6 9. Bf4 Bd7 10. e5 Nh5 11. Bg5 Nxe5 12. Nxe5 Bxe5 13. f4 Bf6 14. Bxf6 Nxf6 15. f5 Qb6+ 16. Kh1 Bxf5 17. b3 Qe3 18. Ne2 Ne4 19. Qe1 e6 20. Rd1 d5 21. Bd3 Rac8 22. Rf3 Qc5 23. h3 Nd6 24. Ng3 Bxd3 25. cxd3 Nf5 26. Nxf5 exf5 27. d4 Qd6 28. Qe3 Rfe8 29. Qg5 Rc2 30. Rxf5 Ree2 31. Rxd5 Qe6 32. Rd8+ Kg7 33. Rg1 h6 34. Qa5 Rxa2 35. Qc3 Rac2 36. Qb4 Qxh3+ 37. gxh3 Rh2# 0-1

[Event "Pan American IBCA-ch 8th"]
[Site "San Jose"]
[Date "2019.10.31"]
[Round "3.4"]
[White "Leyton Calderon, Jairo Oswaldo"]
[Black "Torres, Saulo de Jesus"]
[Result "0-1"]
[ECO "D04"]
[WhiteElo "1539"]
[BlackElo "1759"]
[PlyCount "82"]
[EventDate "2019.10.30"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "CRI"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. Nf3 Nf6 2. b3 g6 3. Bb2 Bg7 4. e3 0-0 5. Be2 d5 6. 0-0 c5 7. d4 cxd4 8. Nxd4 Nc6 9. Nd2 Re8 10. N2f3 Bg4 11. c4 Nxd4 12. Nxd4 Bxe2 13. Qxe2 dxc4 14. Qxc4 Rc8 15. Qe2 Ne4 16. Rac1 Qa5 17. Rxc8 Rxc8 18. Rc1 Rxc1+ 19. Bxc1 Bf6 20. f3 Nd6 21. Kf2 Kg7 22. Qc2 Qh5 23. Kg1 Be5 24. f4 Bxd4 25. exd4 Qd5 26. Qc5 Qe4 27. Qe5+ f6 28. Qxe4 Nxe4 29. Kf1 Kf7 30. Ke2 Ke6 31. Bb2 Kd5 32. Ke3 Nd6 33. g4 h5 34. h3 hxg4 35. hxg4 f5 36. g5 e6 37. Ba3 Nb5 38. Bb2 Nc7 39. a4 a6 40. Ba3 Kc6 41. Bb4 Nd5+ 0-1

[Event "Pan American IBCA-ch 8th"]
[Site "San Jose"]
[Date "2019.10.30"]
[Round "1.9"]
[White "Leyton Calderon, Jairo Oswaldo"]
[Black "Espinosa Toala, Daniel"]
[Result "1-0"]
[ECO "A06"]
[WhiteElo "1539"]
[PlyCount "63"]
[EventDate "2019.10.30"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "CRI"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. Nf3 Nf6 2. b3 d5 3. Bb2 c5 4. e3 Nc6 5. Be2 e6 6. 0-0 Bd6 7. d4 cxd4 8. exd4 0-0 9. Nbd2 Qc7 10. Rc1 a6 11. c4 Qe7 12. Re1 Bd7 13. Qc2 Rac8 14. Qb1 Rfe8 15. Ne5 Ba3 16. f4 Bb4 17. Red1 Red8 18. Ndf3 Qd6 19. c5 Qb8 20. Bd3 Ba5 21. a3 Bc7 22. Ng5 g6 23. Rf1 Rf8 24. Rf3 Nxe5 25. fxe5 Ne8 26. Rh3 Ng7 27. Nxh7 Rfe8 28. Nf6+ Kf8 29. Nxd7+ Ke7 30. Nxb8 Rxb8 31. Rf1 Rh8 32. Rff3 1-0

[Event "Managua Ramirez de Arellano Memorial"]
[Site "Managua"]
[Date "2019.07.28"]
[Round "8"]
[White "Allen, Alonso"]
[Black "Leyton Calderon, Jairo Oswaldo"]
[Result "1/2-1/2"]
[ECO "A00"]
[WhiteElo "1795"]
[BlackElo "1556"]
[PlyCount "104"]
[EventDate "2019.07.13"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NCA"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 g6 3. g3 Bg7 4. Bg2 Nc6 5. Nge2 Nf6 6. d4 cxd4 7. Nxd4 0-0 8. 0-0 Qa5 9. Nb3 Qh5 10. Qxh5 Nxh5 11. Nd5 h6 12. c3 d6 13. f4 f5 14. exf5 gxf5 15. Nc7 Rb8 16. Bd5+ Kh7 17. Ne6 Bxe6 18. Bxe6 Kg6 19. Be3 Nf6 20. Rad1 b5 21. Nd4 Nxd4 22. Bxd4 a5 23. Rfe1 Rb7 24. Re2 Rd8 25. Rde1 Rc7 26. a3 b4 27. axb4 axb4 28. Rg2 bxc3 29. Bxc3 Nh5 30. Bxg7 Nxg7 31. Bd5 Kf6 32. Rd1 Rb8 33. Rdd2 Rb5 34. Bf3 Ne6 35. Bd5 Nd8 36. Bf3 Ne6 37. h3 Rb4 38. Rgf2 Nd4 39. Bh5 Nb3 40. Rc2 Rbc4 41. Rxc4 Rxc4 42. Bd1 Rb4 43. Bf3 Nd4 44. Bd1 Ne6 45. Rd2 Nd4 46. Bh5 Ne6 47. Kf2 Ng7 48. Bf3 Ne6 49. Bd5 Nc5 50. Bf3 Na6 51. Re2 Nc5 52. Rd2 Na4 1/2-1/2

[Event "Managua Ramirez de Arellano Memorial"]
[Site "Managua"]
[Date "2019.07.28"]
[Round "9"]
[White "Leyton Calderon, Jairo Oswaldo"]
[Black "Martinez Orozco, Cristiana Yorlene"]
[Result "1-0"]
[ECO "D04"]
[WhiteElo "1556"]
[BlackElo "1376"]
[PlyCount "61"]
[EventDate "2019.07.13"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NCA"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. Nf3 g6 2. b3 Bg7 3. d4 Nf6 4. Bb2 d5 5. e3 0-0 6. Be2 Nc6 7. 0-0 Bf5 8. a3 h5 9. Nbd2 e6 10. h3 a6 11. c4 Ne4 12. Nxe4 dxe4 13. Nd2 e5 14. d5 Ne7 15. g4 hxg4 16. hxg4 Bd7 17. Nxe4 f5 18. Ng3 fxg4 19. Bxg4 Nf5 20. Bxf5 Bxf5 21. Kg2 Qg5 22. Rg1 Be4+ 23. Kf1 Bf3 24. Qc2 Qh4 25. Qxg6 Qh3+ 26. Ke1 Qh2 27. Nh5 Qxg1+ 28. Qxg1 Bxh5 29. Bxe5 Rf7 30. f4 Kh7 31. Qg5 1-0

[Event "Managua Ramirez de Arellano Memorial"]
[Site "Managua"]
[Date "2019.07.27"]
[Round "7"]
[White "Flores, Manuel"]
[Black "Leyton Calderon, Jairo Oswaldo"]
[Result "1-0"]
[ECO "E72"]
[WhiteElo "1902"]
[BlackElo "1556"]
[PlyCount "51"]
[EventDate "2019.07.13"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NCA"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. g3 0-0 6. Bg2 a5 7. Nge2 e5 8. dxe5 dxe5 9. 0-0 c6 10. Qc2 Be6 11. b3 Nbd7 12. h3 Qc8 13. f4 exf4 14. Nxf4 Nc5 15. Ba3 Nfd7 16. Rad1 Re8 17. Nce2 Na6 18. Nxe6 fxe6 19. Nf4 Nb4 20. Qd2 Nf8 21. Nd3 Nxd3 22. Qxd3 Rd8 23. Qf3 Rxd1 24. Qf7+ Kh8 25. Rxd1 Qe8 26. Qxb7 1-0

[Event "Managua Ramirez de Arellano Memorial"]
[Site "Managua"]
[Date "2019.07.21"]
[Round "6"]
[White "Leyton Calderon, Jairo Oswaldo"]
[Black "Bolanos Garcia, Heidi Paola"]
[Result "1-0"]
[ECO "A05"]
[WhiteElo "1556"]
[BlackElo "1264"]
[PlyCount "76"]
[EventDate "2019.07.13"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NCA"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. Nf3 Nf6 2. b3 Nc6 3. Bb2 e5 4. Nxe5 Nxe5 5. Bxe5 Be7 6. g3 c6 7. Bg2 d6 8. Bb2 Bf5 9. d3 Qd7 10. Nd2 Bh3 11. 0-0 Bxg2 12. Kxg2 0-0 13. a4 d5 14. e4 dxe4 15. Nxe4 Nxe4 16. dxe4 Rad8 17. Qxd7 Rxd7 18. Rad1 Rfd8 19. Rxd7 Rxd7 20. Bc1 b6 21. Kf3 f6 22. Ke2 Rd4 23. f3 Kf7 24. Rd1 Bc5 25. Rxd4 Bxd4 26. Be3 Bb2 27. Kd3 Ke6 28. Kc4 Be5 29. b4 Bd6 30. f4 Bc7 31. g4 Kd6 32. Kd3 c5 33. bxc5+ bxc5 34. c4 Bb6 35. a5 Bxa5 36. Bxc5+ Kc6 37. Bxa7 Bb6 38. Bxb6 Kxb6 1-0

[Event "Colombia Conmemorativo Tiflo 19th"]
[Site "Colombia"]
[Date "2019.07.21"]
[Round "2.4"]
[White "Leyton Calderon, Jairo Oswaldo"]
[Black "Lopez, Jose Luis"]
[Result "0-1"]
[ECO "A05"]
[WhiteElo "1556"]
[BlackElo "1791"]
[PlyCount "54"]
[EventDate "2019.07.15"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. Nf3 Nf6 2. b3 g6 3. Bb2 Bg7 4. e3 b6 5. Be2 Bb7 6. c4 c5 7. Qc2 d6 8. 0-0 Nbd7 9. d4 cxd4 10. exd4 0-0 11. Nc3 Rc8 12. Rac1 d5 13. Rfe1 Re8 14. Qb1 e5 15. Nb5 Ne4 16. Nxa7 Ra8 17. Nb5 dxc4 18. Bxc4 exd4 19. Bxd4 Bxd4 20. Nbxd4 Ne5 21. Bb5 Nxf3+ 22. Nxf3 Re6 23. Re3 Ng5 24. Ne1 Rxe3 25. fxe3 Qd2 26. a4 Qxe3+ 27. Kf1 Ne4 0-1

[Event "Managua Ramirez de Arellano Memorial"]
[Site "Managua"]
[Date "2019.07.21"]
[Round "5"]
[White "Pichardo, Carlos"]
[Black "Leyton Calderon, Jairo Oswaldo"]
[Result "1-0"]
[ECO "E92"]
[WhiteElo "1667"]
[BlackElo "1556"]
[PlyCount "95"]
[EventDate "2019.07.13"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NCA"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. Nf3 0-0 5. e4 d6 6. Be3 e5 7. d5 a5 8. Be2 Na6 9. Qc2 Nb4 10. Qb3 b6 11. a3 Na6 12. Qd1 Nc5 13. Nd2 Nfd7 14. b4 axb4 15. axb4 Rxa1 16. Qxa1 Na6 17. Qa4 Qe7 18. 0-0 Bb7 19. Qb3 Ra8 20. Ra1 Nf6 21. b5 Nc5 22. Rxa8+ Bxa8 23. Qa3 Qd8 24. f3 Ncd7 25. Qa7 Qb8 26. Qa1 Bb7 27. Nb3 Qa8 28. Qxa8+ Bxa8 29. Na2 Bb7 30. Nb4 Nb8 31. g4 Nfd7 32. h3 h6 33. h4 f6 34. Kf2 Kf7 35. Bd3 g5 36. h5 Ke8 37. Nd2 Kf7 38. Nf1 Ke8 39. Ng3 Kf7 40. Nf5 Bf8 41. Bc2 Bg7 42. Ba4 Bf8 43. Na6 Nc5 44. Bxc5 bxc5 45. Nxb8 Ke8 46. b6+ Kd8 47. bxc7+ Kxc7 48. Nd7 1-0

[Event "Managua Ramirez de Arellano Memorial"]
[Site "Managua"]
[Date "2019.07.20"]
[Round "4"]
[White "Leyton Calderon, Jairo Oswaldo"]
[Black "Loaisiga, Octavio"]
[Result "1-0"]
[ECO "A06"]
[WhiteElo "1556"]
[BlackElo "1748"]
[PlyCount "89"]
[EventDate "2019.07.13"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NCA"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. Nf3 d5 2. b3 c5 3. Bb2 Nc6 4. e3 a6 5. d4 Bf5 6. a3 e6 7. dxc5 Bxc5 8. Bxg7 Be7 9. Bxh8 Bf6 10. Bxf6 Qxf6 11. Ra2 Nh6 12. Nbd2 e5 13. Qa1 Rd8 14. Be2 d4 15. exd4 e4 16. d5 Qxa1+ 17. Rxa1 exf3 18. Nxf3 Rxd5 19. c4 Rd7 20. 0-0 Ng4 21. Rfe1 Kf8 22. Rad1 Re7 23. Bf1 Rxe1 24. Rxe1 Bc2 25. h3 Nf6 26. b4 Be4 27. Nd2 Bg6 28. b5 axb5 29. cxb5 Nd4 30. a4 Nc2 31. Rc1 Ke7 32. Be2 Kd7 33. Nc4 Be4 34. a5 Ke6 35. a6 bxa6 36. bxa6 Nd4 37. Bf1 Nb5 38. Nb6 Na7 39. Nc8 Nxc8 40. Rxc8 Kd7 41. Rc1 Ne8 42. g3 Nc7 43. a7 Bd5 44. Bg2 Bxg2 45. Kxg2 1-0

[Event "Colombia Conmemorativo Tiflo 19th"]
[Site "Colombia"]
[Date "2019.07.15"]
[Round "1.16"]
[White "Da Silva Gibson, Jose"]
[Black "Leyton Calderon, Jairo Oswaldo"]
[Result "0-1"]
[ECO "B23"]
[BlackElo "1556"]
[PlyCount "78"]
[EventDate "2019.07.15"]
[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. Nc3 Nc6 3. Bb5 g6 4. f4 Bg7 5. Nf3 e6 6. 0-0 Nge7 7. d3 a6 8. Bc4 b5 9. Bb3 Na5 10. Be3 d6 11. d4 c4 12. Ba4 bxa4 13. Nxa4 Bd7 14. Nc3 Rb8 15. Rb1 d5 16. e5 Nac6 17. a3 Qa5 18. Qd2 h5 19. h4 Nf5 20. Bf2 Nce7 21. Ne2 Qxd2 22. Nxd2 Nh6 23. g3 Nef5 24. Kh1 Ng4 25. Bg1 0-0 26. b3 cxb3 27. Nxb3 Bb5 28. Rfe1 Bxe2 29. Rxe2 Nxg3+ 30. Kg2 Nxe2 31. Bf2 Nxf4+ 32. Kg3 Nh3 33. Be1 Ng1 34. Kg2 Ne2 35. c3 Rb5 36. a4 Rb7 37. Kf1 Nf4 38. Bg3 Bh6 39. Kg1 Rfb8 0-1

[Event "Managua Ramirez de Arellano Memorial"]
[Site "Managua"]
[Date "2019.07.14"]
[Round "3"]
[White "Hernandez Ruiz, Fidel Francisco"]
[Black "Leyton Calderon, Jairo Oswaldo"]
[Result "0-1"]
[ECO "A36"]
[WhiteElo "1197"]
[BlackElo "1556"]
[PlyCount "96"]
[EventDate "2019.07.13"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NCA"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. c4 Nf6 2. g3 g6 3. Bg2 Bg7 4. Nc3 0-0 5. e3 c5 6. Nge2 Nc6 7. 0-0 a6 8. Rb1 Rb8 9. b3 b5 10. d4 cxd4 11. exd4 bxc4 12. bxc4 Bb7 13. Bf4 d6 14. Bxc6 Bxc6 15. Rxb8 Qxb8 16. d5 Bd7 17. Qd2 Qc7 18. Bg5 Qxc4 19. Bxf6 Bxf6 20. Rd1 Bg4 21. Rc1 Qb4 22. Qe3 Rc8 23. f3 Bd7 24. Ne4 Rxc1+ 25. Qxc1 Bd4+ 26. Nxd4 Qxd4+ 27. Kg2 Qxd5 28. Qb2 f5 29. Nf2 Bc6 30. Qb3 Qxb3 31. axb3 Bd5 32. b4 e6 33. g4 g5 34. h3 Kg7 35. Nd3 Kg6 36. Kf2 h5 37. Ke3 hxg4 38. hxg4 Kf6 39. Nb2 Bb3 40. Nd3 e5 41. Nf2 fxg4 42. fxg4 Bd5 43. Nd1 Ke6 44. Nc3 Bc6 45. Ne2 d5 46. Ng1 d4+ 47. Kd2 Bg2 48. Kd3 Kd5 0-1

[Event "Managua Ramirez de Arellano Memorial"]
[Site "Managua"]
[Date "2019.07.14"]
[Round "2"]
[White "Leyton Calderon, Jairo Oswaldo"]
[Black "Salazar Cabezas, Alberto Javier"]
[Result "0-1"]
[ECO "A06"]
[WhiteElo "1556"]
[BlackElo "1914"]
[PlyCount "48"]
[EventDate "2019.07.13"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NCA"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. Nf3 c5 2. b3 d5 3. Bb2 Nc6 4. e3 f6 5. d4 cxd4 6. Nxd4 e5 7. Nxc6 bxc6 8. Be2 Be6 9. 0-0 Bd6 10. Nd2 Ne7 11. c4 0-0 12. Qc2 Qe8 13. Rfd1 Rd8 14. Rac1 Qf7 15. Nb1 f5 16. Na3 f4 17. e4 dxe4 18. c5 Bc7 19. Qxe4 Bd5 20. Qc2 f3 21. Bxf3 e4 22. Bg4 Qf4 23. Bh3 Qxh2+ 24. Kf1 e3 0-1

[Event "Managua Ramirez de Arellano Memorial"]
[Site "Managua"]
[Date "2019.07.13"]
[Round "1"]
[White "Amador Olivares, Jose Rafael"]
[Black "Leyton Calderon, Jairo Oswaldo"]
[Result "0-1"]
[ECO "B20"]
[BlackElo "1556"]
[PlyCount "84"]
[EventDate "2019.07.13"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NCA"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. e4 c5 2. g3 g6 3. d4 cxd4 4. Qxd4 Nf6 5. e5 Nc6 6. Qd1 Nxe5 7. Bg2 Bg7 8. Nf3 Nc6 9. 0-0 0-0 10. Nc3 d5 11. a3 Bg4 12. h3 Bxf3 13. Bxf3 e6 14. Bg5 Qb6 15. Rb1 Ne5 16. Bg2 Rfc8 17. Ne2 Nc4 18. Qd4 Qxd4 19. Nxd4 Nd7 20. c3 h6 21. Bc1 Nde5 22. Rd1 Bf8 23. Bf4 Nd7 24. g4 Bc5 25. Kh2 Bxd4 26. Rxd4 Ncb6 27. h4 Nf6 28. Bf3 h5 29. gxh5 Nxh5 30. Bxh5 gxh5 31. Be3 Kh7 32. Rg1 Rg8 33. Rxg8 Rxg8 34. Rd1 Nc8 35. Rg1 Rxg1 36. Kxg1 Kg6 37. Kg2 Kf5 38. Kf3 f6 39. Bd4 e5 40. Bc5 b6 41. Be3 Nd6 42. Bh6 Nc4 0-1

[Event "Managua Gomez Argenal Memorial 19th"]
[Site "Managua"]
[Date "2019.06.16"]
[Round "9"]
[White "Berrios Vanegas, Yanko Antonio"]
[Black "Leyton Calderon, Jairo Oswaldo"]
[Result "0-1"]
[ECO "B30"]
[WhiteElo "1577"]
[BlackElo "1543"]
[PlyCount "74"]
[EventDate "2019.06.16"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NCA"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 g6 3. Bc4 Bg7 4. Nc3 Nc6 5. 0-0 d6 6. d3 Nf6 7. Re1 0-0 8. h3 Na5 9. Bb3 Nxb3 10. axb3 h6 11. Be3 Be6 12. e5 Nd7 13. exd6 exd6 14. Qd2 Kh7 15. d4 cxd4 16. Bxd4 Ne5 17. Nxe5 dxe5 18. Be3 Qxd2 19. Bxd2 a6 20. Na4 Rfd8 21. Bc3 f6 22. Rad1 Bf8 23. f4 b5 24. fxe5 bxa4 25. bxa4 Rxd1 26. Rxd1 fxe5 27. Bxe5 Kg8 28. b3 Bf5 29. Rd2 Bc5+ 30. Kh2 Kf7 31. g4 Be6 32. Kg3 h5 33. Rh2 Rd8 34. gxh5 gxh5 35. Kh4 Rd5 36. Re2 Be7+ 37. Kg3 Rxe5 0-1

[Event "Managua Gomez Argenal Memorial 19th"]
[Site "Managua"]
[Date "2019.06.16"]
[Round "8"]
[White "Leyton Calderon, Jairo Oswaldo"]
[Black "Salazar Ruiz, Alberto Jose"]
[Result "1-0"]
[ECO "A12"]
[WhiteElo "1543"]
[BlackElo "1249"]
[PlyCount "55"]
[EventDate "2019.06.16"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NCA"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. Nf3 c6 2. b3 d5 3. Bb2 Bf5 4. e3 Nd7 5. Be2 Ngf6 6. 0-0 e6 7. c4 Be7 8. d4 b6 9. Nc3 0-0 10. Bd3 Bxd3 11. Qxd3 h6 12. Rfd1 dxc4 13. Qxc4 c5 14. dxc5 Bxc5 15. Rac1 Qb8 16. Ne2 Rd8 17. Qh4 Be7 18. Ned4 Nd5 19. Qh3 Qb7 20. Nc6 Re8 21. Nxe7+ Nxe7 22. Qg4 g6 23. Qd4 e5 24. Qxd7 Qxd7 25. Rxd7 e4 26. Nd4 a6 27. Rcc7 Kf8 28. Ba3 1-0

[Event "Managua Gomez Argenal Memorial 19th"]
[Site "Managua"]
[Date "2019.06.15"]
[Round "7"]
[White "Mondragon Meynard, Jofran David"]
[Black "Leyton Calderon, Jairo Oswaldo"]
[Result "1-0"]
[ECO "B38"]
[WhiteElo "1821"]
[BlackElo "1543"]
[PlyCount "27"]
[EventDate "2019.06.16"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NCA"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 g6 3. d4 cxd4 4. Nxd4 Bg7 5. c4 Nc6 6. Be3 Nf6 7. Nc3 0-0 8. Be2 d6 9. 0-0 Bd7 10. Rc1 Rc8 11. f4 Nb8 12. f5 Be8 13. b3 Nbd7 14. Nf3 1-0

[Event "Managua Gomez Argenal Memorial 19th"]
[Site "Managua"]
[Date "2019.06.09"]
[Round "6"]
[White "Pilarte Castro, Rene Ozmar"]
[Black "Leyton Calderon, Jairo Oswaldo"]
[Result "1-0"]
[ECO "A06"]
[WhiteElo "1320"]
[BlackElo "1543"]
[PlyCount "32"]
[EventDate "2019.06.16"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NCA"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. Nf3 d5 2. b3 Nc6 3. Bb2 Nf6 4. e3 Bg4 5. Be2 Bxf3 6. Bxf3 e5 7. 0-0 Bd6 8. d3 e4 9. dxe4 dxe4 10. Be2 0-0 11. Nd2 Re8 12. Nc4 Re6 13. a3 Qe7 14. Nxd6 Rxd6 15. Qc1 Rad8 16. c4 h6 1-0

[Event "Managua Gomez Argenal Memorial 19th"]
[Site "Managua"]
[Date "2019.06.09"]
[Round "5"]
[White "Vallecillo, Saul"]
[Black "Leyton Calderon, Jairo Oswaldo"]
[Result "1-0"]
[ECO "B21"]
[WhiteElo "1887"]
[BlackElo "1543"]
[PlyCount "47"]
[EventDate "2019.06.16"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NCA"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Bc4 g6 6. Nf3 Bg7 7. 0-0 Nf6 8. Qe2 d6 9. h3 0-0 10. Rd1 Qb6 11. Be3 Qa5 12. a3 Qh5 13. Rac1 Bh6 14. Bxh6 Qxh6 15. e5 Ne8 16. exd6 Nxd6 17. Bd5 Bd7 18. Ne5 Nxe5 19. Qxe5 Qh4 20. Rd4 Qh5 21. Qxe7 Qh6 22. Rdd1 Rad8 23. Qxd6 Bxh3 24. Qg3 1-0

[Event "Managua Gomez Argenal Memorial 19th"]
[Site "Managua"]
[Date "2019.06.08"]
[Round "4"]
[White "Leyton Calderon, Jairo Oswaldo"]
[Black "Rodriguez Vado, Guisell del Socorro"]
[Result "1-0"]
[ECO "C55"]
[WhiteElo "1543"]
[PlyCount "23"]
[EventDate "2019.06.16"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NCA"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Nc3 Nc6 4. Bc4 Bd6 5. 0-0 Qe7 6. d4 0-0 7. Bg5 b6 8. Nd5 Nxd5 9. Bxe7 Bxe7 10. dxe5 Nf4 11. Qd2 d6 12. Qxf4 1-0

[Event "Managua Gomez Argenal Memorial 19th"]
[Site "Managua"]
[Date "2019.06.02"]
[Round "2"]
[White "Leyton Calderon, Jairo Oswaldo"]
[Black "Arana Gutierrez, Rodolfo Enrique"]
[Result "1-0"]
[ECO "A48"]
[WhiteElo "1543"]
[PlyCount "97"]
[EventDate "2019.06.16"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NCA"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. Nf3 Nf6 2. b3 g6 3. Bb2 Bg7 4. e3 0-0 5. Be2 d6 6. d4 c5 7. dxc5 dxc5 8. 0-0 Nc6 9. Nbd2 Qc7 10. Qc1 Bg4 11. h3 Bd7 12. Nc4 Rfd8 13. Nce5 Ne4 14. Nxd7 Bxb2 15. Qxb2 Rxd7 16. Rad1 Rad8 17. a3 a5 18. Rd3 f6 19. Rfd1 b5 20. Rxd7 Rxd7 21. Rxd7 Qxd7 22. Bxb5 Qd1+ 23. Bf1 Nd2 24. Nxd2 Qxd2 25. Qb1 Kg7 26. g3 e5 27. Bg2 Ne7 28. Bf3 Nd5 29. Qd1 Qxd1+ 30. Bxd1 Nc3 31. Bf3 Nb1 32. a4 f5 33. Kf1 Nd2+ 34. Ke2 Nxf3 35. Kxf3 Kf6 36. Ke2 Ke6 37. Kd2 Kd5 38. f3 g5 39. g4 f4 40. e4+ Kc6 41. Kc3 Kb6 42. Kc4 Kc6 43. c3 Kb6 44. Kd5 h6 45. Kxe5 Kc6 46. Ke6 c4 47. bxc4 Kc5 48. e5 Kxc4 49. Kf7 1-0

[Event "Managua Gomez Argenal Memorial 19th"]
[Site "Managua"]
[Date "2019.06.02"]
[Round "3"]
[White "Martinez Romero, Luis"]
[Black "Leyton Calderon, Jairo Oswaldo"]
[Result "1-0"]
[ECO "B30"]
[WhiteElo "1753"]
[BlackElo "1543"]
[PlyCount "17"]
[EventDate "2019.06.16"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NCA"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 g6 3. Nc3 Bg7 4. Bc4 Nc6 5. 0-0 e6 6. a3 Nf6 7. h3 0-0 8. d4 cxd4 9. Nxd4 1-0

[Event "Managua Gomez Argenal Memorial 19th"]
[Site "Managua"]
[Date "2019.06.01"]
[Round "1"]
[White "Picado, Jorge Luis"]
[Black "Leyton Calderon, Jairo Oswaldo"]
[Result "1-0"]
[ECO "B20"]
[WhiteElo "2203"]
[BlackElo "1543"]
[PlyCount "67"]
[EventDate "2019.06.16"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NCA"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. e4 c5 2. g3 g6 3. Bg2 Bg7 4. Ne2 Nc6 5. 0-0 Nf6 6. c3 d5 7. d3 dxe4 8. dxe4 0-0 9. Qxd8 Rxd8 10. Be3 b6 11. Na3 Bb7 12. f3 Nd7 13. Rad1 e5 14. Rd2 Nf8 15. Rfd1 f5 16. Kf2 Rxd2 17. Bxd2 Bc8 18. Nc1 Be6 19. Bf1 Nb8 20. b4 cxb4 21. cxb4 Nfd7 22. Bc4 Kf7 23. Nd3 Bf8 24. Bxe6+ Kxe6 25. Nb5 Nc6 26. Nc7+ Kf7 27. a4 Nd8 28. a5 Bd6 29. Nb5 Bb8 30. Be3 a6 31. Nc3 b5 32. Nd5 Ne6 33. Ke2 Kf8 34. Nc5 1-0

[Event "NCA-ch op"]
[Site "Managua"]
[Date "2017.09.17"]
[Round "9"]
[White "Leyton Calderon, Jairo Oswaldo"]
[Black "Pichardo, Carlos"]
[Result "0-1"]
[ECO "A13"]
[BlackElo "1761"]
[PlyCount "108"]
[EventDate "2017.09.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NCA"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 e6 3. b3 d5 4. cxd5 exd5 5. Bb2 Bd6 6. e3 c6 7. Be2 Bf5 8. 0-0 0-0 9. d3 Nbd7 10. Nbd2 Nc5 11. Qc2 Re8 12. b4 Ne6 13. a3 Rc8 14. Nh4 Bg6 15. Nxg6 hxg6 16. Nf3 a5 17. Qb3 Qb6 18. Bxf6 gxf6 19. Rfb1 axb4 20. axb4 Bb8 21. Qc3 Kg7 22. g3 Qc7 23. d4 Qd7 24. Bd3 Rh8 25. Kg2 Nc7 26. h4 Qg4 27. Rh1 Ne6 28. Qd2 Nc7 29. Nh2 Qe6 30. Qe2 Ne8 31. Ng4 Nd6 32. f4 Nf5 33. Qf3 Rce8 34. Rae1 Nd6 35. Nf2 Ne4 36. g4 Nxf2 37. Kxf2 Qe7 38. b5 Qb4 39. bxc6 bxc6 40. Re2 Qc3 41. Bb1 Qa3 42. h5 Qd6 43. hxg6 fxg6 44. Ree1 Ba7 45. Rh3 Rxh3 46. Qxh3 Rh8 47. Qf3 c5 48. dxc5 Qxc5 49. Kg3 Qa5 50. Rd1 Rd8 51. Bd3 Qc5 52. Re1 Qc3 53. Qe2 Re8 54. e4 dxe4 0-1

[Event "NCA-ch op"]
[Site "Managua"]
[Date "2017.09.03"]
[Round "2"]
[White "Leyton Calderon, Jairo Oswaldo"]
[Black "Sandino Herrera, Jose Luis"]
[Result "1/2-1/2"]
[ECO "D04"]
[PlyCount "84"]
[EventDate "2017.09.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NCA"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. Nf3 d5 2. b3 Nf6 3. Bb2 c5 4. e3 Nc6 5. d4 Bg4 6. dxc5 e6 7. Be2 Bxc5 8. 0-0 0-0 9. Nbd2 Rc8 10. a3 Bd6 11. c4 dxc4 12. Nxc4 Be7 13. h3 Bh5 14. Rc1 h6 15. Nce5 Nxe5 16. Nxe5 Bxe2 17. Qxe2 Qb6 18. b4 Rfd8 19. Rfd1 Rxc1 20. Rxc1 g6 21. Qc2 Ne8 22. Nc4 Qc6 23. Na5 Qxc2 24. Rxc2 Rd1+ 25. Kh2 Rd7 26. g4 f6 27. Kg2 Nd6 28. Nb3 Kf7 29. Nd4 e5 30. Ne2 b5 31. f3 Nc4 32. Kf2 a6 33. Nc3 f5 34. e4 Bh4+ 35. Ke2 f4 36. a4 Nxb2 37. Rxb2 bxa4 38. Nxa4 Be7 39. Nb6 Rb7 40. Nd5 Bd6 41. Ra2 Bxb4 42. Rxa6 Be7 1/2-1/2

[Event "NCA-ch op"]
[Site "Managua"]
[Date "2017.09.03"]
[Round "3"]
[White "Moraga, Maria"]
[Black "Leyton Calderon, Jairo Oswaldo"]
[Result "1-0"]
[ECO "B34"]
[WhiteElo "1712"]
[PlyCount "89"]
[EventDate "2017.09.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NCA"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Be3 Bg7 6. Nc3 Nf6 7. Be2 0-0 8. Qd2 d5 9. exd5 Nxd5 10. Nxd5 Qxd5 11. Bf3 Qa5 12. Nxc6 Qxd2+ 13. Bxd2 bxc6 14. 0-0-0 Bb7 15. Bb4 Bf6 16. Rhe1 Rfe8 17. Bc5 e6 18. Rd7 Reb8 19. b3 Bc8 20. Rdd1 Bb7 21. a4 Bd8 22. Rd7 Bb6 23. Bxb6 axb6 24. Red1 Ra5 25. Rd8+ Rxd8 26. Rxd8+ Kg7 27. Rd7 Ba8 28. Rc7 c5 29. Bxa8 Rxa8 30. Kb2 Rb8 31. Kc3 Kf6 32. Kc4 Rd8 33. Rc6 Rd2 34. c3 Rxf2 35. Rxb6 Rxg2 36. Kxc5 Rg5+ 37. Kc6 e5 38. Kc7+ Ke7 39. Rb5 Rf5 40. a5 e4 41. Rxf5 gxf5 42. a6 e3 43. a7 e2 44. a8Q e1Q 45. Qd8+ 1-0

[Event "NCA-ch op"]
[Site "Managua"]
[Date "2017.09.02"]
[Round "1"]
[White "Granados Lopez, Fidel"]
[Black "Leyton Calderon, Jairo Oswaldo"]
[Result "1/2-1/2"]
[ECO "B31"]
[WhiteElo "1769"]
[PlyCount "85"]
[EventDate "2017.09.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NCA"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. Bxc6 bxc6 5. d4 Bg7 6. 0-0 cxd4 7. Nxd4 d5 8. Nxc6 Qc7 9. exd5 Nf6 10. c4 0-0 11. Nc3 Ba6 12. Qe2 e6 13. Nb5 Bxb5 14. cxb5 Nxd5 15. Bg5 Kh8 16. Rac1 Qd7 17. Rfd1 h6 18. Bh4 Rfc8 19. h3 a6 20. Ne5 Bxe5 21. Qxe5+ Kg8 22. Rxc8+ Qxc8 23. bxa6 Rxa6 24. a3 Qc2 25. Qb8+ Kh7 26. Rxd5 exd5 27. Qb7 Qc1+ 28. Kh2 Qf4+ 29. Kg1 Re6 30. Bg3 Qf5 31. a4 d4 32. a5 d3 33. Kh2 d2 34. Qd7 Re2 35. Qd8 Qb1 36. Qf6 Qf5 37. Qd8 Rxf2 38. a6 Qc2 39. Bxf2 d1Q 40. Qf6 Qc7+ 41. Bg3 Qdd8 42. Qxd8 Qxd8 43. a7 1/2-1/2

