[Event "Las Americas op U1800 Hybrid"]
[Site "Internet"]
[Date "2022.06.04"]
[Round "1.31"]
[White "Aguirre Araujo, Angel Alfonso"]
[Black "Ruiz Zurita, Cesar Josaya"]
[Result "0-1"]
[ECO "B06"]
[BlackElo "1589"]
[PlyCount "112"]
[EventDate "2022.06.04"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "VEN"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 g6 2. Nc3 Bg7 3. Nf3 c5 4. Bc4 e6 5. 0-0 Ne7 6. d3 d5 7. Bb5+ Bd7 8. Bxd7+ Qxd7 9. exd5 exd5 10. Rb1 0-0 11. Bg5 Nbc6 12. Bxe7 Nxe7 13. Re1 Nc6 14. a3 Rfe8 15. Qd2 Nd4 16. Nxd4 cxd4 17. Ne2 Rac8 18. c3 dxc3 19. Nxc3 Rxe1+ 20. Rxe1 Bxc3 21. bxc3 Qc6 22. Rc1 Qa6 23. Ra1 Qa5 24. g3 Qxc3 25. Qd1 b6 26. a4 d4 27. Kg2 Rc5 28. Ra2 h5 29. Re2 Rf5 30. Re8+ Kg7 31. Re7 Qc6+ 32. Kg1 Rc5 33. Re1 Ra5 34. Qe2 Rxa4 35. Qe5+ Qf6 36. Qb5 Ra2 37. f4 h4 38. Qb3 Ra5 39. Re4 hxg3 40. hxg3 Rc5 41. Qb4 Rd5 42. Qc4 Qd6 43. g4 b5 44. Qb3 a5 45. Qa2 a4 46. Kf2 a3 47. Ke2 Rc5 48. Kd1 Rc3 49. Re5 b4 50. Rb5 Qxf4 51. Rxb4 Qf1+ 52. Kd2 Qxd3+ 53. Ke1 Rc1+ 54. Kf2 Rf1+ 55. Kg2 Qf3+ 56. Kh2 Rh1# 0-1

[Event "Las Americas op U1800 Hybrid"]
[Site "Internet"]
[Date "2022.06.04"]
[Round "3.7"]
[White "Azher, Hossain"]
[Black "Ruiz Zurita, Cesar Josaya"]
[Result "1-0"]
[ECO "A59"]
[WhiteElo "1406"]
[BlackElo "1589"]
[PlyCount "63"]
[EventDate "2022.06.04"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "VEN"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 a6 5. bxa6 Bxa6 6. Nc3 d6 7. g3 g6 8. e4 Bxf1 9. Kxf1 Bg7 10. Kg2 0-0 11. Nge2 Nbd7 12. Qc2 Qa5 13. Bd2 Rfb8 14. Nd1 Qa6 15. Nec3 Ne5 16. b3 Nd3 17. Ne3 Nd7 18. a3 Rb7 19. b4 N3e5 20. b5 Rxb5 21. Nxb5 Qxb5 22. Bc3 Nc4 23. Bxg7 Nxe3+ 24. fxe3 Kxg7 25. a4 Qa6 26. Rhb1 Ne5 27. a5 h5 28. Rb6 Qc8 29. h3 h4 30. a6 Nd7 31. Qb2+ Kh7 32. Rb7 1-0

[Event "Las Americas op U1800 Hybrid"]
[Site "Internet"]
[Date "2022.06.04"]
[Round "5.23"]
[White "Huallpa Fernandez, Hector Manuel"]
[Black "Ruiz Zurita, Cesar Josaya"]
[Result "0-1"]
[ECO "B27"]
[WhiteElo "1221"]
[BlackElo "1589"]
[PlyCount "150"]
[EventDate "2022.06.04"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "VEN"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nf3 c5 4. c3 cxd4 5. Nxd4 d6 6. Bc4 Nf6 7. Qe2 0-0 8. 0-0 a6 9. Nd2 b5 10. Bd3 Bb7 11. N2f3 Nfd7 12. Re1 Nc6 13. Nxc6 Bxc6 14. Be3 Nc5 15. Bxc5 dxc5 16. e5 e6 17. Be4 Bxe4 18. Qxe4 Qc7 19. h3 Rad8 20. Rad1 a5 21. Qe2 Qc6 22. Nd2 Rd7 23. Nb3 Rfd8 24. Rxd7 Rxd7 25. Nxa5 Qa6 26. b4 c4 27. Qe4 Rd5 28. f4 Bh6 29. Re2 Qb6+ 30. Kh2 Rd1 31. Re3 Rd2 32. Nc6 Bxf4+ 33. Qxf4 Qxc6 34. Rf3 Qd7 35. Rf2 Rd3 36. Rf3 Rxf3 37. Qxf3 Qd2 38. Qf6 h5 39. Qf3 Qxa2 40. Qc6 Qd2 41. Qxb5 Qxc3 42. Qc5 Qb3 43. b5 c3 44. b6 c2 45. Qc8+ Kg7 46. b7 Qxb7 47. Qxb7 c1Q 48. Qe4 Qf1 49. Qe3 Qf5 50. h4 g5 51. g3 Kg6 52. Qd4 g4 53. Kg2 Qf3+ 54. Kh2 Kf5 55. Qd8 Qe2+ 56. Kh1 Qxe5 57. Kg2 Qd5+ 58. Qxd5+ exd5 59. Kf2 Ke4 60. Ke2 f5 61. Kf2 f4 62. Kg2 fxg3 63. Kxg3 Ke3 64. Kh2 d4 65. Kg2 Ke2 66. Kg3 d3 67. Kf4 d2 68. Kg5 d1Q 69. Kxh5 g3 70. Kg6 g2 71. h5 g1Q+ 72. Kf6 Qd6+ 73. Kf5 Qf2+ 74. Kg4 Qdf4+ 75. Kh3 Q2g3# 0-1

[Event "Las Americas op U1800 Hybrid"]
[Site "Internet"]
[Date "2022.06.04"]
[Round "2.15"]
[White "Ruiz Zurita, Cesar Josaya"]
[Black "Joseph, Jonath"]
[Result "1-0"]
[ECO "A20"]
[WhiteElo "1589"]
[BlackElo "1391"]
[PlyCount "39"]
[EventDate "2022.06.04"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "VEN"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. g3 Nc6 2. Bg2 d5 3. c4 Nf6 4. Nf3 e5 5. cxd5 Nxd5 6. d3 Be7 7. 0-0 h5 8. Nc3 Nxc3 9. bxc3 h4 10. Re1 hxg3 11. hxg3 Bg4 12. Qa4 Qd7 13. Be3 Bh3 14. Bh1 f5 15. Bg5 Bxg5 16. Nxg5 0-0-0 17. Bxc6 bxc6 18. Qa6+ Kb8 19. Rab1+ Ka8 20. Qb7# 1-0

[Event "Las Americas op U1800 Hybrid"]
[Site "Internet"]
[Date "2022.06.04"]
[Round "4.21"]
[White "Ruiz Zurita, Cesar Josaya"]
[Black "Murillo Rojas, Hugo Ernesto"]
[Result "0-1"]
[ECO "A25"]
[WhiteElo "1589"]
[BlackElo "1230"]
[PlyCount "120"]
[EventDate "2022.06.04"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "VEN"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. g3 e5 2. Bg2 Nc6 3. c4 Nf6 4. Nc3 Bb4 5. Nd5 Bc5 6. d3 0-0 7. Bg5 Bxf2+ 8. Kf1 Nxd5 9. Bxd8 Ne3+ 10. Kxf2 Nxd1+ 11. Rxd1 Rxd8 12. Nf3 d6 13. h3 h6 14. g4 Be6 15. Rdg1 g6 16. e4 Nb4 17. Ke3 Nxa2 18. Bf1 Nb4 19. Be2 a5 20. Rf1 b6 21. g5 h5 22. Nh4 Nc2+ 23. Kd2 Nd4 24. Rf6 Kg7 25. Rh2 a4 26. Rhf2 a3 27. bxa3 Rxa3 28. Ke3 Ra2 29. Bf1 Rda8 30. Rxa2 Rxa2 31. Rf2 Rxf2 32. Kxf2 f6 33. gxf6+ Kxf6 34. Kg3 g5 35. Ng2 Nc2 36. h4 g4 37. Be2 Bd7 38. Bd1 Nb4 39. Ne3 b5 40. Be2 bxc4 41. Nxc4 Bb5 42. Ne3 c6 43. Nc4 Bxc4 44. dxc4 Na6 45. Kf2 Nc5 46. Ke3 Nd7 47. Bd1 c5 48. Ba4 Nf8 49. Be8 Ng6 50. Kf2 Nf4 51. Kg3 Ke7 52. Bc6 Ne2+ 53. Kf2 Nd4 54. Bd5 Nf3 55. Kg3 Ng1 56. Kf2 Nh3+ 57. Kg3 Nf4 58. Bc6 Kd8 59. Ba4 Kc7 60. Be8 Kb6 0-1

[Event "Las Americas op U1800 Hybrid"]
[Site "Internet"]
[Date "2022.06.04"]
[Round "6.16"]
[White "Ruiz Zurita, Cesar Josaya"]
[Black "Reyes Lopez, David"]
[Result "1-0"]
[ECO "B07"]
[WhiteElo "1589"]
[PlyCount "105"]
[EventDate "2022.06.04"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "VEN"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 d6 2. Bc4 Nf6 3. Nc3 c6 4. d4 e6 5. Bg5 Be7 6. Nf3 Nbd7 7. e5 dxe5 8. dxe5 Nd5 9. Bxe7 Qxe7 10. Bxd5 cxd5 11. 0-0 0-0 12. Qd4 a6 13. Ne2 b5 14. a4 b4 15. c3 a5 16. Rfc1 Ba6 17. Ng3 b3 18. Qg4 f6 19. Re1 f5 20. Qg5 Qf7 21. Nd4 h6 22. Qh5 Nc5 23. Qxf7+ Kxf7 24. Red1 Bc4 25. f4 Nd3 26. Rxd3 Bxd3 27. Nf1 Bc4 28. Nd2 g5 29. Nxc4 dxc4 30. Nb5 Rfd8 31. Nd4 Rd5 32. fxg5 hxg5 33. Re1 Rad8 34. Kf2 Rxd4 35. cxd4 Rxd4 36. Ke3 Rd3+ 37. Ke2 Rd5 38. Kf2 Rd2+ 39. Re2 c3 40. Rxd2 c2 41. Rd7+ Kg6 42. Rc7 f4 43. Ke2 Kf5 44. Kd2 g4 45. Rc3 Kxe5 46. Rxb3 Ke4 47. Kxc2 f3 48. gxf3+ gxf3 49. Kd2 Kf4 50. Ke1 e5 51. Kf2 e4 52. Re3 Ke5 53. h4 1-0

[Event "South America-ch U16 17th"]
[Site "Guayaquil"]
[Date "2022.01.29"]
[Round "7"]
[White "Ruiz Zurita, Cesar Josaya"]
[Black "Guaraca Pintado, Juan Pablo"]
[Result "0-1"]
[ECO "A36"]
[WhiteElo "1566"]
[BlackElo "1789"]
[PlyCount "82"]
[EventDate "2022.01.25"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ECU"]
[SourceTitle "CBM 206 Extra"]
[Source "ChessBase"]
[SourceDate "2022.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.03.31"]
[SourceQuality "1"]

1. c4 c5 2. g3 g6 3. Bg2 Bg7 4. d3 Nc6 5. e4 a6 6. Nc3 d6 7. Nge2 Rb8 8. a4 Nf6 9. 0-0 0-0 10. h3 Ne8 11. f4 Nc7 12. f5 Nd4 13. Nxd4 Bxd4+ 14. Kh1 Bg7 15. Be3 b5 16. axb5 axb5 17. fxg6 hxg6 18. Qd2 bxc4 19. dxc4 Be6 20. Ra4 Rb3 21. Rf4 Be5 22. Rf3 Qd7 23. Ra7 Ra8 24. Rxa8+ Nxa8 25. Kh2 Nb6 26. Qc2 Bxc4 27. Bf1 Be6 28. Bf4 Bg7 29. Rf2 Na4 30. Bb5 Rxb5 31. Qxa4 Rb8 32. Qa3 Bxh3 33. Rd2 Bf1 34. Nd5 Qh3+ 35. Kg1 Bd4+ 36. Be3 Bc4 37. Nxe7+ Kg7 38. Bxd4+ cxd4 39. Rg2 Rh8 40. Kf2 Qh1 41. g4 Rh3 0-1

[Event "South America-ch U16 17th"]
[Site "Guayaquil"]
[Date "2022.01.29"]
[Round "8"]
[White "Sifuentes Alcantara, Jhony Sebastian"]
[Black "Ruiz Zurita, Cesar Josaya"]
[Result "1-0"]
[ECO "A69"]
[WhiteElo "1622"]
[BlackElo "1566"]
[PlyCount "39"]
[EventDate "2022.01.25"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ECU"]
[SourceTitle "CBM 206 Extra"]
[Source "ChessBase"]
[SourceDate "2022.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.03.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f4 0-0 6. Nf3 c5 7. d5 e6 8. Be2 exd5 9. cxd5 Re8 10. e5 dxe5 11. fxe5 Ng4 12. Bg5 f6 13. exf6 Bxf6 14. Qd2 Bxg5 15. Qxg5 Qxg5 16. Nxg5 Ne3 17. Kf2 h6 18. Nge4 Nc2 19. Nf6+ Kf7 20. Nxe8 1-0

[Event "South America-ch U16 17th"]
[Site "Guayaquil"]
[Date "2022.01.28"]
[Round "5"]
[White "Ruiz Zurita, Cesar Josaya"]
[Black "Quiroz Alva, Franco Rodrigo"]
[Result "1/2-1/2"]
[ECO "A12"]
[WhiteElo "1566"]
[BlackElo "1691"]
[PlyCount "85"]
[EventDate "2022.01.25"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ECU"]
[SourceTitle "CBM 206 Extra"]
[Source "ChessBase"]
[SourceDate "2022.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.03.31"]
[SourceQuality "1"]

1. c4 c6 2. g3 d5 3. Bg2 Nf6 4. Nf3 Bf5 5. b3 e6 6. 0-0 h6 7. Bb2 Nbd7 8. d3 Bc5 9. Nbd2 0-0 10. Re1 Qb6 11. d4 Be7 12. e3 Ne4 13. c5 Qc7 14. Nxe4 Bxe4 15. Qe2 Bf6 16. b4 a5 17. b5 e5 18. b6 Qb8 19. Bh3 exd4 20. Bxd4 Ne5 21. Nxe5 Bxe5 22. Qh5 Re8 23. f4 Bxd4 24. exd4 Qd8 25. Qh4 Qxh4 26. gxh4 g6 27. Kf2 Kg7 28. Kg3 Re7 29. Re3 f5 30. Rae1 Kf6 31. Bf1 Rg7 32. Ra3 g5 33. hxg5+ hxg5 34. h3 Rag8 35. Rxa5 gxf4+ 36. Kf2 Rg3 37. Ra7 R8g7 38. a4 f3 39. Rxb7 Rg2+ 40. Ke3 Rxb7 41. Bxg2 fxg2 42. a5 Rh7 43. a6 1/2-1/2

[Event "South America-ch U16 17th"]
[Site "Guayaquil"]
[Date "2022.01.28"]
[Round "6"]
[White "Vargas Sotelo, Victor Salomon"]
[Black "Ruiz Zurita, Cesar Josaya"]
[Result "1-0"]
[ECO "B23"]
[WhiteElo "1626"]
[BlackElo "1566"]
[PlyCount "72"]
[EventDate "2022.01.25"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ECU"]
[SourceTitle "CBM 206 Extra"]
[Source "ChessBase"]
[SourceDate "2022.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.03.31"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. f4 g6 4. Bc4 Bg7 5. Nge2 Na5 6. d3 e6 7. 0-0 Ne7 8. Be3 b6 9. Ng3 0-0 10. f5 exf5 11. exf5 d5 12. f6 dxc4 13. fxg7 Kxg7 14. Qd2 cxd3 15. Bh6+ Kg8 16. Bxf8 Kxf8 17. cxd3 Qd4+ 18. Kh1 Nf5 19. Nce4 Nxg3+ 20. hxg3 Bf5 21. Rae1 Bxe4 22. Rxe4 Qd7 23. Ref4 Kg8 24. Rxf7 Qxf7 25. Rxf7 Kxf7 26. Qf4+ Kg8 27. Qc7 Rf8 28. Qxa7 Rf6 29. Qe7 Rc6 30. Kh2 g5 31. Qxg5+ Rg6 32. Qd8+ Kg7 33. g4 Nc6 34. Qxb6 Ne5 35. Qc7+ Nf7 36. Qxc5 Rxg4 1-0

[Event "South America-ch U16 17th"]
[Site "Guayaquil"]
[Date "2022.01.27"]
[Round "4"]
[White "Ruiz Zurita, Cesar Josaya"]
[Black "Orozco Aguilera, Pablo Sebastian"]
[Result "1-0"]
[ECO "A11"]
[WhiteElo "1566"]
[BlackElo "1634"]
[PlyCount "101"]
[EventDate "2022.01.25"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ECU"]
[SourceTitle "CBM 206 Extra"]
[Source "ChessBase"]
[SourceDate "2022.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.03.31"]
[SourceQuality "1"]

1. c4 c6 2. g3 d5 3. Bg2 Nf6 4. Nf3 Bg4 5. Qb3 Qb6 6. 0-0 e6 7. d3 Bd6 8. Be3 Qc7 9. c5 Be7 10. Bf4 Qc8 11. d4 Nbd7 12. Qc2 0-0 13. Nbd2 Bf5 14. Qc3 Ne4 15. Nxe4 Bxe4 16. b4 f6 17. h4 Bxf3 18. exf3 e5 19. Be3 exd4 20. Bxd4 Ne5 21. Rfe1 Re8 22. f4 Nd7 23. Re3 Bf8 24. Bh3 Qc7 25. Rae1 Red8 26. Be6+ Kh8 27. f5 b6 28. Bxd7 Qxd7 29. Re6 bxc5 30. bxc5 Rab8 31. g4 Kg8 32. Qe3 Rb7 33. Re2 Rdb8 34. g5 fxg5 35. Qxg5 Rc7 36. Be5 Rb1+ 37. Kg2 Rc8 38. Bd6 Qf7 39. h5 Rb7 40. a4 Rd7 41. a5 Bxd6 42. cxd6 Rcd8 43. h6 Kh8 44. Re7 gxh6 45. Rxf7 hxg5 46. Re8+ Rxe8 47. Rxd7 Kg8 48. Rxa7 d4 49. Re7 Rf8 50. d7 d3 51. Kf1 1-0

[Event "South America-ch U16 17th"]
[Site "Guayaquil"]
[Date "2022.01.26"]
[Round "3"]
[White "Reyes Zavaleta, Fabian Ricardo"]
[Black "Ruiz Zurita, Cesar Josaya"]
[Result "1-0"]
[ECO "E65"]
[WhiteElo "1738"]
[BlackElo "1566"]
[PlyCount "105"]
[EventDate "2022.01.25"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ECU"]
[SourceTitle "CBM 206 Extra"]
[Source "ChessBase"]
[SourceDate "2022.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.03.31"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. Nc3 0-0 5. g3 c5 6. Bg2 d6 7. 0-0 Nbd7 8. e4 cxd4 9. Nxd4 Ne5 10. b3 Bd7 11. h3 Rb8 12. Be3 a6 13. Rc1 Qc8 14. Kh2 Re8 15. Qd2 h5 16. f4 Nc6 17. Nd5 Qd8 18. Rfd1 Nxd5 19. cxd5 Nxd4 20. Bxd4 Bxd4 21. Qxd4 Qa5 22. Qf2 Rbc8 23. f5 Rxc1 24. Rxc1 Kg7 25. fxg6 f6 26. Bf3 Kxg6 27. g4 hxg4 28. Rg1 Rh8 29. Bxg4 Bxg4 30. Rxg4+ Kf7 31. Qf5 Qd2+ 32. Rg2 Qh6 33. Rc2 Re8 34. Qe6+ Kg7 35. Rg2+ Kh8 36. Qg4 Qg5 37. Qxg5 fxg5 38. Rxg5 Rc8 39. Kg3 Rc2 40. Kf4 Rf2+ 41. Kg4 Rxa2 42. Kf5 Re2 43. Rg4 Re3 44. Ke6 Rxb3 45. Kxe7 a5 46. Kxd6 a4 47. e5 b5 48. e6 Re3 49. Rb4 Kg7 50. Rxb5 Kf6 51. Rb4 a3 52. Rf4+ Kg5 53. Rf2 1-0

[Event "South America-ch U16 17th"]
[Site "Guayaquil"]
[Date "2022.01.26"]
[Round "2"]
[White "Ruiz Zurita, Cesar Josaya"]
[Black "Flores Aedo, Alexander Oliver M"]
[Result "1-0"]
[ECO "A26"]
[WhiteElo "1566"]
[BlackElo "1804"]
[PlyCount "70"]
[EventDate "2022.01.25"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ECU"]
[SourceTitle "CBM 206 Extra"]
[Source "ChessBase"]
[SourceDate "2022.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.03.31"]
[SourceQuality "1"]

1. c4 Nf6 2. g3 e5 3. Bg2 Nc6 4. Nc3 g6 5. d3 Bg7 6. e4 0-0 7. Nge2 d6 8. 0-0 Nd7 9. h4 Nc5 10. Be3 Nb4 11. Nc1 a5 12. a3 Nc6 13. Rb1 Ne6 14. Nd5 Ncd4 15. Bxd4 Nxd4 16. Ne2 c6 17. Nxd4 exd4 18. Nf4 a4 19. b4 axb3 20. Rxb3 Qa5 21. Qe2 Qc5 22. Ra1 Ra7 23. Qb2 h6 24. Bh3 Bxh3 25. Nxh3 f5 26. Nf4 Rf7 27. Qe2 g5 28. hxg5 hxg5 29. Ne6 Qe5 30. Nxg5 Rf6 31. Qh5 fxe4 32. dxe4 d3 33. Rab1 Ra5 34. Qh7+ Kf8 35. Rxb7 Qxg5 1-0

[Event "South America-ch U16 17th"]
[Site "Guayaquil"]
[Date "2022.01.25"]
[Round "1"]
[White "Preciado Ortega, Justin Dereck"]
[Black "Ruiz Zurita, Cesar Josaya"]
[Result "0-1"]
[ECO "B27"]
[BlackElo "1566"]
[PlyCount "58"]
[EventDate "2022.01.25"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ECU"]
[SourceTitle "CBM 206 Extra"]
[Source "ChessBase"]
[SourceDate "2022.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.03.31"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nf3 c5 4. c3 cxd4 5. cxd4 d5 6. e5 Bg4 7. Bb5+ Bd7 8. Bxd7+ Qxd7 9. 0-0 e6 10. Bg5 h6 11. Be3 Ne7 12. Qd2 Nf5 13. Nc3 0-0 14. h3 Qe7 15. g3 Nc6 16. a3 a5 17. Nh2 a4 18. f4 Nxg3 19. Rf3 Nf5 20. Ne2 Na5 21. Qb4 Qxb4 22. axb4 Nc4 23. Bc1 Rfc8 24. Ng4 h5 25. Ne3 Ncxe3 26. Bxe3 Rc2 27. Nc3 Rxb2 28. Rxa4 Rxa4 29. Nxa4 Rxb4 0-1

[Event "Pan American-ch School U15"]
[Site "Medellin"]
[Date "2019.11.17"]
[Round "9"]
[White "Ruiz Zurita, Cesar Josaya"]
[Black "Gonzalez De la Guardia, Luis Emilio"]
[Result "0-1"]
[ECO "A00"]
[WhiteElo "1394"]
[BlackElo "1439"]
[PlyCount "55"]
[EventDate "2019.11.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 193 Extra"]
[Source "ChessBase"]
[SourceDate "2020.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.01.31"]
[SourceQuality "1"]

1. g3 d5 2. Bg2 e5 3. c4 d4 4. d3 Nf6 5. Na3 Nc6 6. Nc2 a5 7. Bg5 h6 8. Bxf6 Qxf6 9. Nf3 Be7 10. 0-0 0-0 11. Qd2 Be6 12. a3 a4 13. Rfb1 Na5 14. Qe1 Nb3 15. Ra2 Rab8 16. Nd2 b5 17. Nb4 Nxd2 18. Qxd2 bxc4 19. Raa1 cxd3 20. exd3 Bxb4 21. axb4 Bb3 22. Re1 Qd6 23. Rac1 Rxb4 24. Rxe5 Rfb8 25. Rec5 Be6 26. Qd1 Rxb2 27. Qxa4 Rb1 28. Rxc7 0-1

[Event "Pan American-ch School U15"]
[Site "Medellin"]
[Date "2019.11.16"]
[Round "7"]
[White "Briones Espino, Martin Daniel"]
[Black "Ruiz Zurita, Cesar Josaya"]
[Result "1/2-1/2"]
[ECO "B14"]
[WhiteElo "1522"]
[BlackElo "1394"]
[PlyCount "43"]
[EventDate "2019.11.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 193 Extra"]
[Source "ChessBase"]
[SourceDate "2020.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.01.31"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nf3 c5 4. c3 cxd4 5. cxd4 d5 6. exd5 Nf6 7. Nc3 Nxd5 8. Bc4 Nb6 9. Bb3 0-0 10. h3 Bf5 11. 0-0 Nc6 12. Be3 Na5 13. Bc2 Bxc2 14. Qxc2 Rc8 15. Qe2 Nac4 16. Rac1 Nxe3 17. fxe3 Nd5 18. Nxd5 Qxd5 19. b3 Qa5 20. e4 Qb6 21. Qd3 Rxc1 22. Rxc1 1/2-1/2

[Event "Pan American-ch School U15"]
[Site "Medellin"]
[Date "2019.11.16"]
[Round "8"]
[White "Ruiz Zurita, Cesar Josaya"]
[Black "Ramirez Ramirez, Anderson"]
[Result "0-1"]
[ECO "C26"]
[WhiteElo "1394"]
[BlackElo "1541"]
[PlyCount "50"]
[EventDate "2019.11.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 193 Extra"]
[Source "ChessBase"]
[SourceDate "2020.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.01.31"]
[SourceQuality "1"]

1. g3 e5 2. Bg2 Nc6 3. e4 Nf6 4. Nc3 Bc5 5. Nge2 d6 6. 0-0 0-0 7. Na4 Bb6 8. Nxb6 axb6 9. c3 d5 10. exd5 Nxd5 11. d4 exd4 12. Nxd4 Nxd4 13. Qxd4 Ne7 14. Qe4 Ng6 15. Re1 Ra5 16. Bf4 Nxf4 17. Qxf4 Rf5 18. Qe3 c6 19. Rad1 Qf6 20. Bh3 Rf3 21. Qxb6 Bxh3 22. Rd2 Rxc3 23. Qb4 Rf3 24. Qxb7 Rf5 25. a4 Rd5 0-1

[Event "Pan American-ch School U15"]
[Site "Medellin"]
[Date "2019.11.15"]
[Round "6"]
[White "Ruiz Zurita, Cesar Josaya"]
[Black "Romero Valencia, Miguel Angel"]
[Result "0-1"]
[ECO "A13"]
[WhiteElo "1394"]
[BlackElo "1612"]
[PlyCount "63"]
[EventDate "2019.11.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 193 Extra"]
[Source "ChessBase"]
[SourceDate "2020.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.01.31"]
[SourceQuality "1"]

1. g3 d5 2. Bg2 Nf6 3. c4 e6 4. cxd5 exd5 5. Nf3 Bf5 6. Qb3 Qc8 7. 0-0 c6 8. d3 Be7 9. e4 dxe4 10. dxe4 Nxe4 11. Re1 Nc5 12. Qe3 Ne6 13. Qe5 Bxb1 14. Rxb1 0-0 15. Bh3 Nd7 16. Qe4 Ndc5 17. Qe2 Re8 18. Be3 Qc7 19. b4 Nd7 20. Bxe6 fxe6 21. Bf4 Bd6 22. Ng5 Nf8 23. Bxd6 Qxd6 24. Rbc1 Qxb4 25. Rc4 Qe7 26. h4 Rad8 27. Rec1 Qd6 28. Qb2 h6 29. Nh3 b5 30. Nf4 e5 31. Qb3 Kh8 32. Kg2 0-1

[Event "Pan American-ch School U15"]
[Site "Medellin"]
[Date "2019.11.14"]
[Round "4"]
[White "Ruiz Zurita, Cesar Josaya"]
[Black "Vargas Diaz, Juan David"]
[Result "1-0"]
[ECO "A20"]
[WhiteElo "1394"]
[PlyCount "119"]
[EventDate "2019.11.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 193 Extra"]
[Source "ChessBase"]
[SourceDate "2020.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.01.31"]
[SourceQuality "1"]

1. g3 d5 2. Bg2 e5 3. c4 c6 4. cxd5 cxd5 5. d4 Nc6 6. dxe5 Bb4+ 7. Bd2 Be6 8. Nf3 Nge7 9. 0-0 0-0 10. Bxb4 Nxb4 11. Nc3 Nbc6 12. e4 dxe4 13. Nxe4 Bd5 14. Re1 Ng6 15. Rc1 Re8 16. b3 Ncxe5 17. Nxe5 Rxe5 18. Nf6+ Qxf6 19. Rxe5 Qxe5 20. Qxd5 Qb2 21. Rc7 Rf8 22. a4 h6 23. Be4 Qf6 24. Rxb7 Rd8 25. Rd7 Rxd7 26. Qxd7 Qa1+ 27. Kg2 Qe5 28. Qd5 Qxd5 29. Bxd5 Ne7 30. Bc4 Nc6 31. Kf3 Kf8 32. Ke4 Ke7 33. f4 f6 34. Kf5 Kf8 35. Ke6 Nd4+ 36. Kd7 Nf3 37. Kc7 Nxh2 38. Be2 g5 39. Kb7 gxf4 40. gxf4 h5 41. Bxh5 Nf1 42. Kxa7 Ne3 43. b4 Ke7 44. b5 Nd5 45. b6 Nxf4 46. b7 Nxh5 47. b8Q Ng7 48. Kb6 Ne6 49. a5 f5 50. a6 f4 51. a7 f3 52. Qb7+ Kd6 53. Qxf3 Nc7 54. Qf4+ Ke6 55. Qxc7 Kd5 56. a8Q+ Kd4 57. Qa3 Kd5 58. Qd3+ Ke6 59. Qcd6+ Kf7 60. Q3g6# 1-0

[Event "Pan American-ch School U15"]
[Site "Medellin"]
[Date "2019.11.14"]
[Round "5"]
[White "Vargas, Daniel Fernando"]
[Black "Ruiz Zurita, Cesar Josaya"]
[Result "0-1"]
[ECO "E65"]
[WhiteElo "1594"]
[BlackElo "1394"]
[PlyCount "88"]
[EventDate "2019.11.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 193 Extra"]
[Source "ChessBase"]
[SourceDate "2020.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.01.31"]
[SourceQuality "1"]

1. c4 g6 2. g3 Bg7 3. Bg2 c5 4. Nc3 d6 5. Nf3 Nf6 6. d4 cxd4 7. Nxd4 0-0 8. 0-0 a6 9. e4 Bg4 10. f3 Bd7 11. Be3 Nc6 12. Nxc6 bxc6 13. Qe2 Qc7 14. Rfd1 Rfb8 15. c5 d5 16. exd5 Nxd5 17. Nxd5 cxd5 18. Rd2 Bc6 19. Rad1 Qa5 20. a3 Rxb2 21. Rxb2 Bxb2 22. Rb1 Bf6 23. Qd3 d4 24. Bh6 Qxc5 25. Kh1 Bb5 26. Qe4 Rc8 27. Bh3 e6 28. Bf1 Bxf1 29. Rxf1 Qxa3 30. Rd1 Rd8 31. Rd3 Qc5 32. Qe2 Bg5 33. Bxg5 Qxg5 34. Qb2 Qb5 35. Qc2 a5 36. Kg2 a4 37. g4 Qd7 38. h4 e5 39. Qe2 Qb5 40. Qc2 Qd5 41. Ra3 d3 42. Qa2 Qd4 43. h5 e4 44. h6 e3 0-1

[Event "Pan American-ch School U15"]
[Site "Medellin"]
[Date "2019.11.13"]
[Round "3"]
[White "Nunez Villavicencio, Jorge Daniel"]
[Black "Ruiz Zurita, Cesar Josaya"]
[Result "1-0"]
[ECO "B72"]
[WhiteElo "1532"]
[BlackElo "1394"]
[PlyCount "75"]
[EventDate "2019.11.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 193 Extra"]
[Source "ChessBase"]
[SourceDate "2020.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.01.31"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nc3 c5 4. Nf3 cxd4 5. Nxd4 d6 6. Be3 Nf6 7. Be2 0-0 8. 0-0 b6 9. f3 Bb7 10. Qd2 Nbd7 11. a4 Ne5 12. a5 Nfd7 13. a6 Bxe4 14. Nxe4 Nc5 15. Nc3 Qc8 16. Bh6 Bxh6 17. Qxh6 Nc6 18. Nxc6 Qxc6 19. Bb5 Qc8 20. Nd5 Qd8 21. Qh4 f6 22. b4 e6 23. bxc5 exd5 24. Bc6 Rc8 25. Bxd5+ Kg7 26. c6 Rc7 27. Rfe1 Qc8 28. Qd4 h5 29. Re6 Rxc6 30. Re7+ Kh6 31. Bxc6 Qxc6 32. Qd2+ g5 33. Rae1 Rc8 34. h4 Qc5+ 35. Kh1 Rg8 36. R7e6 Qf5 37. hxg5+ Rxg5 38. Rxd6 1-0

[Event "Pan American-ch School U15"]
[Site "Medellin"]
[Date "2019.11.12"]
[Round "1"]
[White "Hernandez, Jeronimo"]
[Black "Ruiz Zurita, Cesar Josaya"]
[Result "1-0"]
[ECO "C40"]
[WhiteElo "1768"]
[BlackElo "1394"]
[PlyCount "74"]
[EventDate "2019.11.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 193 Extra"]
[Source "ChessBase"]
[SourceDate "2020.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.01.31"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 g6 3. d4 exd4 4. Qxd4 Qf6 5. Nc3 d6 6. Nd5 Qxd4 7. Nxd4 Kd8 8. Bg5+ f6 9. Nxf6 Be7 10. Nxg8 Bxg5 11. Nf3 Bf4 12. Nf6 Nd7 13. Nd5 Bh6 14. Bd3 Ne5 15. 0-0 c6 16. Nc3 Nxd3 17. cxd3 Be6 18. Nd4 Bd7 19. Nc2 Kc7 20. d4 Rae8 21. f3 Rhf8 22. Rad1 g5 23. h3 Bg7 24. Ne2 h5 25. Ng3 Rh8 26. Ne3 g4 27. Nef5 gxh3 28. Nxg7 hxg2 29. Kxg2 h4 30. Nxe8+ Bxe8 31. Nf5 Bd7 32. Kh2 d5 33. Rg1 Re8 34. Rde1 Kb6 35. exd5 cxd5 36. Nxh4 Rh8 37. Kg3 Kb5 1-0

[Event "Pan American-ch School U15"]
[Site "Medellin"]
[Date "2019.11.12"]
[Round "2"]
[White "Ruiz Zurita, Cesar Josaya"]
[Black "Rovira Concepcion, James Xavier"]
[Result "1-0"]
[ECO "A23"]
[WhiteElo "1394"]
[PlyCount "46"]
[EventDate "2019.11.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 193 Extra"]
[Source "ChessBase"]
[SourceDate "2020.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.01.31"]
[SourceQuality "1"]

1. g3 e5 2. Bg2 Nf6 3. c4 Bc5 4. Nc3 c6 5. e3 d5 6. d4 exd4 7. exd4 Qe7+ 8. Nge2 Bb6 9. Bg5 h6 10. Bxf6 Qxf6 11. cxd5 cxd5 12. Nxd5 Qd8 13. 0-0 0-0 14. Re1 Be6 15. Nef4 Bf5 16. Ne7+ Kh7 17. Nxf5 Qf6 18. Qd3 g6 19. Ne7 Nc6 20. Nexg6 fxg6 21. Re6 Qf7 22. Rxg6 Kh8 23. Rxh6+ Kg8 1-0

