[Event "BOL-ch"]
[Site "Oruro"]
[Date "2024.04.07"]
[Round "9"]
[White "Zambrana, Oswaldo"]
[Black "Gemy Vargas, Jose Daniel"]
[Result "1-0"]
[ECO "C54"]
[WhiteElo "2407"]
[BlackElo "2317"]
[PlyCount "99"]
[EventDate "2024.04.02"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "BOL"]
[SourceTitle "CB16_2024"]
[SourceDate "2024.04.17"]
[SourceVersion "1"]
[SourceVersionDate "2024.04.17"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. 0-0 Nf6 5. d3 d6 6. c3 a5 7. Re1 0-0 8. h3 h6 9. Nbd2 Be6 10. Bb5 Ne7 11. d4 exd4 12. cxd4 Ba7 13. a4 c6 14. Bd3 Ng6 15. Nf1 d5 16. e5 Ne4 17. N1d2 Nxd2 18. Bxd2 c5 19. Qc1 Nh4 20. Nxh4 Qxh4 21. dxc5 Rac8 22. Be3 d4 23. Bf4 Bxc5 24. Bg3 Qg5 25. Qb1 f5 26. exf6 Qxf6 27. Re4 Bd5 28. Re5 Qd8 29. Qd1 b6 30. Qg4 Bf7 31. Qe4 g6 32. h4 Re8 33. h5 Rxe5 34. Bxe5 Qd5 35. hxg6 Be6 36. Qf4 Be7 37. Re1 Bg5 38. Qg3 Rc1 39. Rxc1 Bxc1 40. f4 Qb3 41. Qh4 Qd1+ 42. Kh2 Bxf4+ 43. Bxf4 Qxd3 44. Qd8+ Kg7 45. Qe7+ Kxg6 46. Qxe6+ Kg7 47. Be5+ Kf8 48. Qxb6 Qe2 49. Qf6+ Ke8 50. Qe6+ 1-0

[Event "BOL-ch"]
[Site "Oruro"]
[Date "2024.04.06"]
[Round "8"]
[White "Martinez, Ariel A"]
[Black "Zambrana, Oswaldo"]
[Result "0-1"]
[ECO "B31"]
[WhiteElo "2142"]
[BlackElo "2407"]
[PlyCount "96"]
[EventDate "2024.04.02"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "BOL"]
[SourceTitle "CB16_2024"]
[SourceDate "2024.04.17"]
[SourceVersion "1"]
[SourceVersionDate "2024.04.17"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. Bxc6 dxc6 5. d4 cxd4 6. Qxd4 Qxd4 7. Nxd4 e5 8. Nf3 f6 9. Be3 Be6 10. a3 Nh6 11. h3 Nf7 12. Nc3 Nd6 13. Nd2 Be7 14. f3 b6 15. Ne2 Kd7 16. 0-0-0 g5 17. g4 h5 18. Bf2 Rh7 19. Ng3 hxg4 20. hxg4 Rah8 21. Rxh7 Rxh7 22. Rh1 Rh4 23. Rxh4 gxh4 24. Ne2 h3 25. Bg3 Nf7 26. Bf2 Ng5 27. Ng3 c5 28. Ngf1 c4 29. c3 Kc6 30. Nh2 Bf7 31. Be3 Kb5 32. Kb1 Ne6 33. Ndf1 Nf4 34. Ng3 Bc5 35. Bxf4 exf4 36. Nh5 Bg1 37. Nf1 h2 38. Nxh2 Bxh2 39. Nxf6 Kc6 40. g5 Bg3 41. Kc1 Bh4 42. Kd2 Bxg5 43. Ng4 Kd6 44. Ke2 Ke6 45. Nh2 Be7 46. Nf1 Bc5 47. Nd2 Ke5 48. Nf1 b5 0-1

[Event "BOL-ch"]
[Site "Oruro"]
[Date "2024.04.06"]
[Round "7"]
[White "Mayta Aiza, Maveric"]
[Black "Zambrana, Oswaldo"]
[Result "1-0"]
[ECO "B26"]
[WhiteElo "2084"]
[BlackElo "2407"]
[PlyCount "85"]
[EventDate "2024.04.02"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "BOL"]
[SourceTitle "CB16_2024"]
[SourceDate "2024.04.17"]
[SourceVersion "1"]
[SourceVersionDate "2024.04.17"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 e6 6. Be3 d6 7. Qd2 h6 8. Nge2 e5 9. 0-0 Nge7 10. h3 a6 11. a4 Nd4 12. f4 exf4 13. Nxf4 0-0 14. Rf2 Kh7 15. Raf1 Ng8 16. Ncd5 b5 17. Ne2 Nxe2+ 18. Qxe2 Be6 19. Nf4 Qd7 20. axb5 axb5 21. e5 Rae8 22. g4 Bxe5 23. c4 Bg7 24. b3 Ne7 25. Qd2 bxc4 26. dxc4 Rb8 27. Qd3 Rb6 28. Nh5 Ng8 29. Bd5 Be5 30. Nf4 Bxf4 31. Rxf4 Bxd5 32. Qxd5 f6 33. Bxc5 Rxb3 34. Bxd6 Rd8 35. c5 Rxh3 36. Rb1 Kh8 37. Rb7 Qe8 38. Re4 Rxd6 39. cxd6 Qc8 40. Rc4 Qe8 41. Qe4 Rg3+ 42. Kh2 Qf8 43. Qxg6 1-0

[Event "BOL-ch"]
[Site "Oruro"]
[Date "2024.04.05"]
[Round "6"]
[White "Zambrana, Oswaldo"]
[Black "Bolanos, Fernando"]
[Result "1-0"]
[ECO "B69"]
[WhiteElo "2407"]
[BlackElo "2227"]
[PlyCount "57"]
[EventDate "2024.04.02"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "BOL"]
[SourceTitle "CB16_2024"]
[SourceDate "2024.04.17"]
[SourceVersion "1"]
[SourceVersionDate "2024.04.17"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Qd2 a6 8. 0-0-0 Bd7 9. f4 Be7 10. Nf3 b5 11. Bxf6 gxf6 12. Kb1 b4 13. Ne2 Qb6 14. Ned4 h5 15. Bc4 Na5 16. Bd3 Nb7 17. Qe2 Nc5 18. Bc4 Rc8 19. Rhe1 Nxe4 20. Bxe6 Nc3+ 21. bxc3 fxe6 22. c4 e5 23. fxe5 dxe5 24. Nxe5 fxe5 25. Qxe5 Rh7 26. Nf5 Rc5 27. Ng7+ Rxg7 28. Qxg7 Be6 29. Qg6+ 1-0

[Event "BOL-ch"]
[Site "Oruro"]
[Date "2024.04.04"]
[Round "5"]
[White "Ribera, Miguel Angel"]
[Black "Zambrana, Oswaldo"]
[Result "0-1"]
[ECO "D31"]
[WhiteElo "1953"]
[BlackElo "2407"]
[PlyCount "70"]
[EventDate "2024.04.02"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "BOL"]
[SourceTitle "CB16_2024"]
[SourceDate "2024.04.17"]
[SourceVersion "1"]
[SourceVersionDate "2024.04.17"]
[SourceQuality "1"]

1. c4 e6 2. Nc3 d5 3. d4 h6 4. cxd5 exd5 5. Bf4 Nf6 6. e3 Bd6 7. Bxd6 Qxd6 8. Bd3 0-0 9. Nge2 c6 10. h3 b6 11. 0-0 Ba6 12. Ng3 Bxd3 13. Qxd3 Nbd7 14. Rad1 Rfe8 15. Rfe1 Rad8 16. Nf5 Qc7 17. f3 h5 18. e4 dxe4 19. fxe4 g6 20. e5 Nxe5 21. Qg3 h4 22. Qxh4 Ned7 23. Ne7+ Kg7 24. Re3 Nf8 25. Rde1 Qd7 26. d5 c5 27. Re5 N8h7 28. g4 b5 29. g5 Nh5 30. d6 Qxd6 31. Nf5+ gxf5 32. Rxe8 Rxe8 33. Rxe8 Qg6 34. Nd5 Nxg5 35. Kf1 Nf3 0-1

[Event "BOL-ch"]
[Site "Oruro"]
[Date "2024.04.04"]
[Round "4"]
[White "Zambrana, Oswaldo"]
[Black "Ticona Rocabado, Licael Roderick"]
[Result "0-1"]
[ECO "C54"]
[WhiteElo "2407"]
[BlackElo "2377"]
[PlyCount "90"]
[EventDate "2024.04.02"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "BOL"]
[SourceTitle "CB16_2024"]
[SourceDate "2024.04.17"]
[SourceVersion "1"]
[SourceVersionDate "2024.04.17"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. 0-0 Nf6 5. d3 d6 6. c3 0-0 7. a4 a5 8. Be3 Ba7 9. Nbd2 h6 10. h3 Be6 11. Bxe6 fxe6 12. Qb3 Qd7 13. Bxa7 Rxa7 14. d4 exd4 15. cxd4 d5 16. Rfe1 Ra6 17. exd5 exd5 18. Ne5 Nxe5 19. Rxe5 Rb6 20. Qc3 Qc6 21. Qxc6 Rxc6 22. b3 Rc2 23. Rd1 c6 24. f3 Rc3 25. Kf2 Rd3 26. Ke2 Rxd4 27. Ke3 Rb4 28. Kd3 Re8 29. Rxe8+ Nxe8 30. Rc1 Rb6 31. Rc5 Ra6 32. Kd4 Nf6 33. Rc1 Nd7 34. g4 Rb6 35. f4 Rb4+ 36. Ke3 Kf7 37. Kf3 Ke6 38. Re1+ Kf7 39. h4 Nc5 40. Re3 Ne6 41. f5 Nd4+ 42. Kf2 h5 43. gxh5 Nxf5 44. Rc3 Rxh4 45. Rc5 Rh2+ 0-1

[Event "BOL-ch"]
[Site "Oruro"]
[Date "2024.04.03"]
[Round "3"]
[White "Titichoca Daza, Daniel Henry"]
[Black "Zambrana, Oswaldo"]
[Result "0-1"]
[ECO "B33"]
[WhiteElo "2130"]
[BlackElo "2407"]
[PlyCount "82"]
[EventDate "2024.04.02"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "BOL"]
[SourceTitle "CB16_2024"]
[SourceDate "2024.04.17"]
[SourceVersion "1"]
[SourceVersionDate "2024.04.17"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6 8. Na3 b5 9. Nd5 Be7 10. Bxf6 Bxf6 11. c4 b4 12. Nc2 0-0 13. Qf3 Bg5 14. h4 Bh6 15. g4 f6 16. a3 b3 17. Qxb3 Rb8 18. Qc3 Bxg4 19. Bh3 f5 20. b4 Bxh3 21. Qxh3 fxe4 22. Qg4 Kh8 23. Qxe4 Qd7 24. Rd1 Rbe8 25. Kf1 Qf7 26. Rh2 Qh5 27. Re1 Bd2 28. Re2 Bf4 29. Rh1 Ne7 30. Nc7 Rc8 31. Nxa6 Qf7 32. c5 d5 33. Qd3 e4 34. Qb3 Nf5 35. b5 e3 36. Rh3 Qh5 37. b6 Qg4 38. Rhxe3 Bxe3 39. Rxe3 Nxe3+ 40. Qxe3 Qd1+ 41. Ne1 Rce8 0-1

[Event "BOL-ch"]
[Site "Oruro"]
[Date "2024.04.03"]
[Round "2"]
[White "Zambrana, Oswaldo"]
[Black "Cueto Chajtur, Johny"]
[Result "1-0"]
[ECO "B06"]
[WhiteElo "2407"]
[BlackElo "2100"]
[PlyCount "69"]
[EventDate "2024.04.02"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "BOL"]
[SourceTitle "CB16_2024"]
[SourceDate "2024.04.17"]
[SourceVersion "1"]
[SourceVersionDate "2024.04.17"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nf3 a6 4. Bc4 b5 5. Bb3 Bb7 6. 0-0 e6 7. Re1 Nf6 8. e5 Nd5 9. Bg5 f6 10. exf6 Bxf6 11. Bh6 Kf7 12. Nbd2 Bg7 13. Bg5 Nf6 14. Ne5+ Kg8 15. Ne4 Bxe4 16. Rxe4 h6 17. Bxf6 Bxf6 18. Nxg6 Rh7 19. d5 c5 20. dxe6 c4 21. e7 Qe8 22. Qd5+ Kg7 23. Qxa8 Kxg6 24. Rg4+ Bg5 25. Qe4+ Kg7 26. h4 Nc6 27. hxg5 h5 28. Rf4 Qxe7 29. Qxe7+ Nxe7 30. Bxc4 bxc4 31. Rxc4 Kg6 32. Rd1 Nf5 33. Rc7 Kxg5 34. Rcxd7 Rh6 35. R1d5 1-0

[Event "BOL-ch"]
[Site "Oruro"]
[Date "2024.04.02"]
[Round "1"]
[White "Montevilla Cahuasa, Jonathan Isaac"]
[Black "Zambrana, Oswaldo"]
[Result "1/2-1/2"]
[ECO "B31"]
[WhiteElo "1974"]
[BlackElo "2407"]
[PlyCount "155"]
[EventDate "2024.04.02"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "BOL"]
[SourceTitle "CB16_2024"]
[SourceDate "2024.04.17"]
[SourceVersion "1"]
[SourceVersionDate "2024.04.17"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. Bxc6 dxc6 5. d3 Qc7 6. h3 e5 7. 0-0 Nf6 8. a3 Nd7 9. Be3 a5 10. Nbd2 h6 11. c3 b6 12. d4 Ba6 13. Re1 Bg7 14. dxc5 Nxc5 15. Bxc5 bxc5 16. c4 0-0 17. Qc2 Bc8 18. Rad1 Be6 19. Nf1 Rfb8 20. b3 a4 21. bxa4 Qa5 22. Ne3 Qxa4 23. Qxa4 Rxa4 24. Rd6 Rc8 25. Red1 Rxa3 26. Rd8+ Rxd8 27. Rxd8+ Kh7 28. Rd6 Ra6 29. Ng4 Bxg4 30. hxg4 Ra1+ 31. Kh2 Rc1 32. Rxc6 Rxc4 33. Kg3 Rc3 34. Rc7 Kg8 35. Rc8+ Bf8 36. Kh2 Kg7 37. Rc6 Rc4 38. Nxe5 Rxe4 39. Nd7 c4 40. f3 Rd4 41. Nxf8 Kxf8 42. Kg3 Ke7 43. Kf2 Kd7 44. Rc5 Kd6 45. Rc8 Kd5 46. Ke2 f6 47. g3 h5 48. gxh5 gxh5 49. Rc7 f5 50. Rf7 Ke6 51. Rh7 c3 52. Rxh5 Rd2+ 53. Ke3 Rd1 54. Rh2 Kd5 55. g4 fxg4 56. fxg4 Kc4 57. g5 Rd3+ 58. Ke4 Rd2 59. Rh8 Rd4+ 60. Ke3 Rg4 61. Rc8+ Kb3 62. Rb8+ Kc2 63. Rb5 Kd1 64. Rb1+ Kc2 65. Rb5 Rc4 66. g6 Rg4 67. Rb6 Kd1 68. Rb1+ Kc2 69. Rb6 Kc1 70. Kf3 Rg1 71. Kf4 c2 72. Kf5 Kd2 73. Rd6+ Ke3 74. Rc6 c1Q 75. Rxc1 Rxc1 76. g7 Rg1 77. Kf6 Rxg7 78. Kxg7 1/2-1/2

[Event "Iberoamerican-ch 9th"]
[Site "Panama City"]
[Date "2023.12.02"]
[Round "9"]
[White "Zambrana, Oswaldo"]
[Black "Mareco, Sandro"]
[Result "1-0"]
[ECO "C54"]
[WhiteElo "2400"]
[BlackElo "2606"]
[PlyCount "53"]
[EventDate "2023.11.25"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "PAN"]
[SourceTitle "CB49_2023"]
[SourceDate "2023.12.06"]
[SourceVersion "1"]
[SourceVersionDate "2023.12.06"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. 0-0 Nf6 5. d3 d6 6. c3 a5 7. Re1 0-0 8. h3 Be6 9. Nbd2 Ba7 10. a4 h6 11. Nf1 Nxe4 12. Rxe4 d5 13. Bxd5 Bxd5 14. Re1 Bc5 15. Ng3 Re8 16. Be3 Bf8 17. Nd2 g6 18. Rf1 f5 19. f4 exf4 20. Bxf4 g5 21. Nxf5 gxf4 22. Rxf4 Kh8 23. Qf1 Ne5 24. d4 Ng6 25. Rg4 Ra6 26. Qd3 Be6 27. Rxg6 1-0

[Event "Iberoamerican-ch 9th"]
[Site "Panama City"]
[Date "2023.12.01"]
[Round "8"]
[White "Delgado Rosas, Alex Antonio"]
[Black "Zambrana, Oswaldo"]
[Result "0-1"]
[ECO "B13"]
[WhiteElo "2105"]
[BlackElo "2400"]
[PlyCount "100"]
[EventDate "2023.11.25"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "PAN"]
[SourceTitle "CB49_2023"]
[SourceDate "2023.12.06"]
[SourceVersion "1"]
[SourceVersionDate "2023.12.06"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. Bf4 c5 4. e3 Nc6 5. Nbd2 cxd4 6. exd4 Bg4 7. c3 e6 8. Qb3 Bd6 9. Bxd6 Qxd6 10. Bd3 0-0 11. 0-0 Rab8 12. a4 a6 13. a5 Qc7 14. Qa4 Nd7 15. h3 Bh5 16. Rfe1 Rfe8 17. Re3 Rbd8 18. Qc2 Bg6 19. b4 e5 20. dxe5 Ndxe5 21. Rae1 Re6 22. Bxg6 hxg6 23. Nxe5 Rxe5 24. Nf3 Rxe3 25. Rxe3 Qf4 26. Qd2 Kh7 27. Rd3 Qxd2 28. Rxd2 Kg8 29. Kf1 Kf8 30. Ke2 Ke7 31. Kd3 Kd6 32. Re2 f6 33. Nd4 Rc8 34. Nxc6 bxc6 35. Kd4 Rh8 36. Kd3 Rc8 37. Kd4 g5 38. Re3 Rb8 39. Re2 Rh8 40. Re3 Rh4+ 41. g4 f5 42. Rg3 f4 43. Rd3 Rh8 44. c4 Rb8 45. Rb3 Rxb4 46. Rxb4 c5+ 47. Kc3 cxb4+ 48. Kxb4 Kc6 49. Kc3 dxc4 50. Kxc4 f3 0-1

[Event "Iberoamerican-ch 9th"]
[Site "Panama City"]
[Date "2023.11.30"]
[Round "7"]
[White "Zambrana, Oswaldo"]
[Black "Hernandez Guerrero, Gilberto Eduardo"]
[Result "1/2-1/2"]
[ECO "B48"]
[WhiteElo "2400"]
[BlackElo "2527"]
[PlyCount "72"]
[EventDate "2023.11.25"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "PAN"]
[SourceTitle "CB49_2023"]
[SourceDate "2023.12.06"]
[SourceVersion "1"]
[SourceVersionDate "2023.12.06"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. Be3 a6 7. Qd2 Nf6 8. 0-0-0 b5 9. f3 Be7 10. g4 Nxd4 11. Qxd4 Bb7 12. g5 Nh5 13. Kb1 Rc8 14. a3 Bc5 15. Qd2 Bxe3 16. Qxe3 0-0 17. h4 Rfd8 18. Bh3 Nf4 19. h5 Qe5 20. Bg4 d5 21. Qb6 d4 22. g6 hxg6 23. hxg6 Nxg6 24. Bh5 Qc7 25. Qxc7 Rxc7 26. Bxg6 fxg6 27. Rhg1 Rcd7 28. Ne2 d3 29. Nf4 dxc2+ 30. Kxc2 Rxd1 31. Rxd1 Rxd1 32. Kxd1 Kf7 33. Nd3 Kf6 34. Ke2 e5 35. Kf2 a5 36. b4 axb4 1/2-1/2

[Event "Iberoamerican-ch 9th"]
[Site "Panama City"]
[Date "2023.11.29"]
[Round "6"]
[White "Miranda Mesa, Elier"]
[Black "Zambrana, Oswaldo"]
[Result "1/2-1/2"]
[ECO "B23"]
[WhiteElo "2490"]
[BlackElo "2400"]
[PlyCount "52"]
[EventDate "2023.11.25"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "PAN"]
[SourceTitle "CB49_2023"]
[SourceDate "2023.12.06"]
[SourceVersion "1"]
[SourceVersionDate "2023.12.06"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. Bb5 Nd4 4. Bc4 a6 5. a4 e6 6. Nge2 Nf6 7. 0-0 d5 8. exd5 exd5 9. Ba2 Bd6 10. d3 Ne6 11. Ng3 0-0 12. Nh5 Nxh5 13. Qxh5 Nd4 14. Bg5 Qd7 15. Bxd5 Nxc2 16. Rac1 Nb4 17. Bc4 b6 18. Rfe1 Qf5 19. Ne4 Bc7 20. Re3 Be6 21. Bxe6 fxe6 22. Rf3 Qe5 23. Rh3 Qf5 24. Rf3 Qe5 25. Rh3 Qf5 26. Re1 Bd8 1/2-1/2

[Event "Iberoamerican-ch 9th"]
[Site "Panama City"]
[Date "2023.11.28"]
[Round "5"]
[White "Zambrana, Oswaldo"]
[Black "Ortiz Verdesoto, Anahi Eduarda"]
[Result "1-0"]
[ECO "C55"]
[WhiteElo "2400"]
[BlackElo "2175"]
[PlyCount "75"]
[EventDate "2023.11.25"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "PAN"]
[SourceTitle "CB49_2023"]
[SourceDate "2023.12.06"]
[SourceVersion "1"]
[SourceVersionDate "2023.12.06"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Be7 5. 0-0 d6 6. a4 0-0 7. Re1 Na5 8. Ba2 c5 9. Bg5 Be6 10. Bxf6 Bxf6 11. Nc3 g6 12. Nd5 Bg7 13. c3 Nc6 14. h3 Rb8 15. Qd2 h6 16. b4 cxb4 17. cxb4 Ne7 18. Nxe7+ Qxe7 19. Bc4 Rfd8 20. Qa2 Rd7 21. Rac1 Rbd8 22. Bd5 Bxd5 23. Qxd5 Rc7 24. Rc4 Qd7 25. Nd2 Rxc4 26. Nxc4 Qxa4 27. Qxb7 Bf8 28. Ne3 Qa3 29. Nd5 Kg7 30. Re3 Qc1+ 31. Kh2 Qc8 32. Qxa7 Rd7 33. Qa2 Rb7 34. Qc4 Qb8 35. Rf3 h5 36. h4 Qd8 37. g3 Qb8 38. Qc6 1-0

[Event "Iberoamerican-ch 9th"]
[Site "Panama City"]
[Date "2023.11.27"]
[Round "4"]
[White "Berdayes Ason, Dylan Isidro"]
[Black "Zambrana, Oswaldo"]
[Result "1/2-1/2"]
[ECO "D37"]
[WhiteElo "2507"]
[BlackElo "2400"]
[PlyCount "111"]
[EventDate "2023.11.25"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "PAN"]
[SourceTitle "CB49_2023"]
[SourceDate "2023.12.06"]
[SourceVersion "1"]
[SourceVersionDate "2023.12.06"]
[SourceQuality "1"]

1. d4 e6 2. c4 d5 3. Nc3 h6 4. Nf3 Nf6 5. Bf4 Bd6 6. Bxd6 Qxd6 7. e3 0-0 8. c5 Qe7 9. Be2 Nbd7 10. 0-0 c6 11. b4 b6 12. Qc2 a5 13. a3 Bb7 14. e4 dxe4 15. Nxe4 Nxe4 16. Qxe4 Nf6 17. Qc2 Ba6 18. Ne5 Bxe2 19. Qxe2 Qc7 20. Nc4 bxc5 21. bxc5 Nd7 22. Rfb1 Rfb8 23. g3 a4 24. Qc2 e5 25. dxe5 Nxc5 26. Rxb8+ Rxb8 27. Nd6 Nb3 28. Rd1 c5 29. Qc4 Qe7 30. Re1 Qe6 31. Qe4 Nd4 32. Rc1 Qh3 33. Nc4 Rb3 34. Nd2 Rb2 35. Rb1 Rxb1+ 36. Nxb1 Qe6 37. Nc3 Qb3 38. Qa8+ Kh7 39. Nxa4 Qxa3 40. Qe4+ Kh8 41. Qa8+ Kh7 42. Kg2 Ne6 43. Qe4+ g6 44. Nb6 Qb4 45. Nc4 Kg7 46. h4 h5 47. Qd5 Nc7 48. Qd3 Qb7+ 49. Qf3 Qd5 50. Qxd5 Nxd5 51. Kf3 f6 52. Ke4 Nc3+ 53. Kd3 Nd5 54. f4 fxe5 55. Nxe5 Ne7 56. g4 1/2-1/2

[Event "Iberoamerican-ch 9th"]
[Site "Panama City"]
[Date "2023.11.26"]
[Round "3"]
[White "Zambrana, Oswaldo"]
[Black "Cabezas Solano, David Alejandro"]
[Result "1-0"]
[ECO "B96"]
[WhiteElo "2400"]
[BlackElo "2171"]
[PlyCount "59"]
[EventDate "2023.11.25"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "PAN"]
[SourceTitle "CB49_2023"]
[SourceDate "2023.12.06"]
[SourceVersion "1"]
[SourceVersionDate "2023.12.06"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. Qe2 Nbd7 8. 0-0-0 Qc7 9. f4 b5 10. g4 b4 11. Nd5 exd5 12. exd5+ Be7 13. Nc6 Nb8 14. Bxf6 gxf6 15. Bg2 Nxc6 16. dxc6 Ra7 17. f5 a5 18. Bd5 Kd8 19. Qe4 Ba6 20. Qd4 Rg8 21. Rhe1 Bb5 22. Bxf7 Rf8 23. Bd5 Ra6 24. Re6 Kc8 25. g5 Qa7 26. Qe4 Bd8 27. Rxd6 Bc7 28. Qe7 Bxd6 29. Be6+ Kb8 30. Qxd6+ 1-0

[Event "Iberoamerican-ch 9th"]
[Site "Panama City"]
[Date "2023.11.25"]
[Round "1"]
[White "Pastor Carvajal, Jeigoth"]
[Black "Zambrana, Oswaldo"]
[Result "1/2-1/2"]
[ECO "B23"]
[WhiteElo "1985"]
[BlackElo "2400"]
[PlyCount "37"]
[EventDate "2023.11.25"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "PAN"]
[SourceTitle "CB49_2023"]
[SourceDate "2023.12.06"]
[SourceVersion "1"]
[SourceVersionDate "2023.12.06"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. Bb5 e6 4. Bxc6 bxc6 5. d3 d5 6. f4 Be7 7. Nf3 Nf6 8. 0-0 0-0 9. Qe1 d4 10. Na4 c4 11. dxc4 c5 12. e5 Nd7 13. b3 Bb7 14. Nb2 Qb6 15. Nd3 f6 16. Bd2 Qc6 17. Qg3 fxe5 18. fxe5 Rf5 19. Bh6 1/2-1/2

[Event "Oruro Baptista Memorial"]
[Site "Oruro"]
[Date "2023.11.05"]
[Round "9"]
[White "Zambrana, Oswaldo"]
[Black "Mirzoev, Azer"]
[Result "1/2-1/2"]
[ECO "C54"]
[WhiteElo "2400"]
[BlackElo "2415"]
[PlyCount "39"]
[EventDate "2023.11.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BOL"]
[SourceTitle "Mega2024 Update 01"]
[Source "Chessbase"]
[SourceDate "2023.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.12"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d3 a6 6. 0-0 Ba7 7. a4 d6 8. Nbd2 0-0 9. h3 Ne7 10. Bb3 Ng6 11. d4 h6 12. Re1 Re8 13. a5 Bd7 14. Qc2 Bc6 15. Ba4 Bxa4 16. Qxa4 Qd7 17. dxe5 Nxe5 18. Nxe5 Rxe5 19. Qxd7 Nxd7 20. Nf3 1/2-1/2

[Event "Oruro Baptista Memorial"]
[Site "Oruro"]
[Date "2023.11.04"]
[Round "8"]
[White "Rios, Cristhian Camilo"]
[Black "Zambrana, Oswaldo"]
[Result "1/2-1/2"]
[ECO "E38"]
[WhiteElo "2475"]
[BlackElo "2400"]
[PlyCount "25"]
[EventDate "2023.11.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BOL"]
[SourceTitle "Mega2024 Update 01"]
[Source "Chessbase"]
[SourceDate "2023.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.12"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 c5 5. dxc5 Na6 6. a3 Bxc3+ 7. Qxc3 Nxc5 8. Bg5 Nce4 9. Bxf6 Qxf6 10. Qxf6 Nxf6 11. Nf3 d5 12. cxd5 Nxd5 13. e3 1/2-1/2

[Event "Oruro Baptista Memorial"]
[Site "Oruro"]
[Date "2023.11.04"]
[Round "7"]
[White "Zambrana, Oswaldo"]
[Black "Ribera, Miguel Angel"]
[Result "1-0"]
[ECO "B96"]
[WhiteElo "2400"]
[BlackElo "1923"]
[PlyCount "51"]
[EventDate "2023.11.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BOL"]
[SourceTitle "Mega2024 Update 01"]
[Source "Chessbase"]
[SourceDate "2023.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.12"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. Qe2 b5 8. 0-0-0 Nbd7 9. f4 Qc7 10. g4 Be7 11. Bxf6 Bxf6 12. g5 Bxd4 13. Rxd4 Bb7 14. Bh3 0-0 15. Rhd1 Nc5 16. a3 d5 17. exd5 exd5 18. Kb1 Rfe8 19. Qh5 Ne4 20. Nxe4 Rxe4 21. f5 g6 22. Qh6 Re2 23. Rc1 gxf5 24. Bxf5 f6 25. gxf6 Rxh2 26. Rg4+ 1-0

[Event "Oruro Baptista Memorial"]
[Site "Oruro"]
[Date "2023.11.03"]
[Round "6"]
[White "Tapia Espada, Antonio Enrique"]
[Black "Zambrana, Oswaldo"]
[Result "0-1"]
[ECO "D37"]
[WhiteElo "1686"]
[BlackElo "2400"]
[PlyCount "66"]
[EventDate "2023.11.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BOL"]
[SourceTitle "Mega2024 Update 01"]
[Source "Chessbase"]
[SourceDate "2023.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.12"]
[SourceQuality "1"]

1. d4 e6 2. c4 d5 3. Nc3 h6 4. Nf3 Nf6 5. e3 Be7 6. b3 0-0 7. Be2 Nbd7 8. 0-0 b6 9. cxd5 exd5 10. Ne5 Bb7 11. f4 c5 12. Ba3 Rc8 13. Rc1 a6 14. g4 cxd4 15. Bxe7 Qxe7 16. exd4 Ne4 17. Qe1 Nxe5 18. fxe5 b5 19. Bd3 Qg5 20. Nxe4 dxe4 21. Be2 Rfd8 22. Rxc8 Bxc8 23. Qf2 Bxg4 24. Qxf7+ Kh8 25. Bxg4 Qxg4+ 26. Kh1 e3 27. Rg1 Qe4+ 28. Rg2 Rg8 29. Qh5 Rc8 30. Qd1 e2 31. Qe1 Rc1 32. Qxc1 e1Q+ 33. Qxe1 Qxe1+ 0-1

[Event "Oruro Baptista Memorial"]
[Site "Oruro"]
[Date "2023.11.03"]
[Round "5"]
[White "Zambrana, Oswaldo"]
[Black "Beltran Salvador, Milka"]
[Result "1-0"]
[ECO "B48"]
[WhiteElo "2400"]
[BlackElo "1624"]
[PlyCount "67"]
[EventDate "2023.11.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BOL"]
[SourceTitle "Mega2024 Update 01"]
[Source "Chessbase"]
[SourceDate "2023.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.12"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e6 5. Nc3 Qc7 6. Be3 a6 7. Qd2 Nf6 8. 0-0-0 b5 9. f3 Bb4 10. Kb1 Bb7 11. Nxc6 Qxc6 12. Bd4 Bc5 13. Qg5 Bxd4 14. Rxd4 0-0 15. Be2 h6 16. Qd2 Qc7 17. g4 d5 18. g5 hxg5 19. Qxg5 dxe4 20. Rg1 Ne8 21. Nxe4 f6 22. Qh4 Rd8 23. Rxd8 Qxd8 24. Bd3 Qd4 25. Rg4 Bxe4 26. Rxe4 Qd5 27. Rd4 Qb7 28. Bh7+ Kf7 29. Qh5+ Ke7 30. Qc5+ Kf7 31. Bg6+ Kg8 32. Rh4 f5 33. Rh8+ Kxh8 34. Qxf8# 1-0

[Event "Oruro Baptista Memorial"]
[Site "Oruro"]
[Date "2023.11.02"]
[Round "4"]
[White "Ferrufino, Boris"]
[Black "Zambrana, Oswaldo"]
[Result "1/2-1/2"]
[ECO "D02"]
[WhiteElo "1884"]
[BlackElo "2400"]
[PlyCount "36"]
[EventDate "2023.11.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BOL"]
[SourceTitle "Mega2024 Update 01"]
[Source "Chessbase"]
[SourceDate "2023.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.12"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 e6 3. Nbd2 d5 4. e3 Nbd7 5. Bd3 b6 6. Ne5 Nxe5 7. dxe5 Nd7 8. f4 Bb7 9. 0-0 g6 10. b3 Nc5 11. Ba3 Nxd3 12. Bxf8 Kxf8 13. cxd3 Ba6 14. Nf3 c5 15. Rf2 Kg7 16. Qd2 Rc8 17. h3 h5 18. Rc1 Qd7 1/2-1/2

[Event "Oruro Baptista Memorial"]
[Site "Oruro"]
[Date "2023.11.02"]
[Round "3"]
[White "Zambrana, Oswaldo"]
[Black "Arce, Valeria"]
[Result "1-0"]
[ECO "C10"]
[WhiteElo "2400"]
[BlackElo "1382"]
[PlyCount "89"]
[EventDate "2023.11.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BOL"]
[SourceTitle "Mega2024 Update 01"]
[Source "Chessbase"]
[SourceDate "2023.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.12"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 dxe4 4. Nxe4 Be7 5. Nf3 Nf6 6. Nxf6+ Bxf6 7. Bd3 0-0 8. 0-0 c5 9. dxc5 Nc6 10. c3 Qc7 11. Be3 e5 12. Qc2 g6 13. Bh6 Bg7 14. Bxg7 Kxg7 15. b4 Be6 16. Rfe1 a5 17. a3 f6 18. Be4 Rfd8 19. h4 Bd5 20. h5 Bxe4 21. Qxe4 Qf7 22. Rad1 gxh5 23. Nh4 Qb3 24. Nf5+ Kh8 25. Nd6 Rd7 26. b5 Na7 27. Qf5 Rg7 28. Qxf6 Qg8 29. Nf5 Rf8 30. Qxg7+ Qxg7 31. Nxg7 Kxg7 32. Rd7+ Rf7 33. Rxf7+ Kxf7 34. c4 Kf6 35. f4 exf4 36. Re8 Kf5 37. Ra8 Nxb5 38. cxb5 Kg4 39. c6 bxc6 40. bxc6 h4 41. Rxa5 f3 42. c7 fxg2 43. c8Q+ Kg3 44. Ra4 h3 45. Qc3# 1-0

[Event "Oruro Baptista Memorial"]
[Site "Oruro"]
[Date "2023.11.01"]
[Round "2"]
[White "Salazar Salinas, Rodrigo"]
[Black "Zambrana, Oswaldo"]
[Result "1/2-1/2"]
[ECO "A43"]
[WhiteElo "1495"]
[BlackElo "2400"]
[PlyCount "193"]
[EventDate "2023.11.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BOL"]
[SourceTitle "Mega2024 Update 01"]
[Source "Chessbase"]
[SourceDate "2023.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.12"]
[SourceQuality "1"]

1. d4 e6 2. Nc3 c5 3. d5 Nf6 4. e4 exd5 5. Nxd5 Nxd5 6. Qxd5 Be7 7. Be3 Nc6 8. 0-0-0 d6 9. Bb5 0-0 10. Bxc6 Be6 11. Qd3 bxc6 12. Ne2 Qa5 13. a3 Rab8 14. Bd2 Qb6 15. Bc3 d5 16. Qg3 f6 17. Nf4 Bf7 18. exd5 Bd6 19. dxc6 Qc7 20. Rxd6 Qxd6 21. c7 Qxc7 22. Nd3 Qxg3 23. hxg3 Rbc8 24. Re1 Rfe8 25. Rxe8+ Bxe8 26. Kd2 Bb5 27. Ke3 Kf7 28. g4 g5 29. f3 Ba4 30. b3 Be8 31. Nf2 c4 32. Ne4 Ke6 33. b4 Bg6 34. Bd4 Bxe4 35. Kxe4 a6 36. c3 Rf8 37. a4 f5+ 38. gxf5+ Rxf5 39. g4 Rf4+ 40. Ke3 Kd5 41. b5 axb5 42. axb5 Rf8 43. b6 Re8+ 44. Kf2 Kc6 45. Kf1 Ra8 46. Ke2 Kd5 47. Ke3 Ra1 48. Ke2 Rb1 49. Kd2 Kc6 50. Ke3 Rd1 51. Ke4 Rd3 52. f4 gxf4 53. Kxf4 Rd1 54. Ke4 Re1+ 55. Be3 Kb7 56. Kf3 Rh1 57. Kf4 Kc6 58. Ke4 Re1 59. Kf4 Kd5 60. Bd4 Rf1+ 61. Ke3 Rf7 62. Bh8 Rf1 63. Bd4 Rf8 64. g5 Rf1 65. Bf6 Rb1 66. Bd4 Re1+ 67. Kf4 Ke6 68. Bc5 Kd7 69. Bd4 Kc6 70. Kf3 Re7 71. Kf4 Kd5 72. Kf3 Rf7+ 73. Ke3 Rf8 74. Bg7 Rg8 75. Bf6 Rb8 76. Bd4 Rf8 77. Bg7 Rf1 78. Bd4 Kc6 79. Ke4 Rh1 80. Ke5 Rh4 81. Be3 Rh3 82. Bd4 Rg3 83. Kf4 Rg2 84. Kf5 Rb2 85. Ke4 Rb5 86. Be3 Kd6 87. Kd4 Rxb6 88. Kxc4 Rc6+ 89. Kd4 Ke6 90. c4 Ra6 91. Ke4 Ra1 92. Kd4 Rd1+ 93. Kc5 Rd3 94. Bc1 Rb3 95. Bd2 Rd3 96. Bc1 Rb3 97. Bd2 1/2-1/2

[Event "Oruro Baptista Memorial"]
[Site "Oruro"]
[Date "2023.11.01"]
[Round "1"]
[White "Zambrana, Oswaldo"]
[Black "Fernandez Mallco, Alejandro Elvis"]
[Result "1-0"]
[ECO "C06"]
[WhiteElo "2400"]
[BlackElo "1282"]
[PlyCount "99"]
[EventDate "2023.11.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BOL"]
[SourceTitle "Mega2024 Update 01"]
[Source "Chessbase"]
[SourceDate "2023.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.12"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. Bd3 c5 6. c3 Nc6 7. Ne2 b6 8. a3 Bb7 9. b4 c4 10. Bc2 b5 11. a4 a6 12. 0-0 Be7 13. f4 g6 14. Nf3 Qb6 15. Kh1 0-0-0 16. Be3 f5 17. exf6 Bxf6 18. Qd2 Ne7 19. axb5 Qxb5 20. Ne5 Bxe5 21. fxe5 Nf5 22. Bg5 Rde8 23. g4 Ne7 24. Ba4 Qb6 25. Rf7 Nc6 26. Bxc6 Bxc6 27. Bf6 Rhf8 28. Rxf8 Rxf8 29. Qh6 Rf7 30. g5 Bb7 31. Qh3 Kb8 32. Nf4 Nf8 33. Qg4 Bc8 34. h4 Kb7 35. Ra5 Kb8 36. Kg2 Nd7 37. Qd1 Kb7 38. Qa4 Nxf6 39. gxf6 Bd7 40. Qc2 Qd8 41. Qa2 Qb6 42. Kg3 Bb5 43. Qe2 Qc6 44. Qg4 Qe8 45. Qxe6 Qxe6 46. Nxe6 Ka7 47. Ng5 Rf8 48. Nxh7 Rf7 49. e6 Rxh7 50. f7 1-0

[Event "South America-ch 1st"]
[Site "Lima"]
[Date "2023.09.22"]
[Round "9"]
[White "Zambrana, Oswaldo"]
[Black "Vivas Zamora, Fabian Ernesto"]
[Result "1/2-1/2"]
[ECO "C55"]
[WhiteElo "2380"]
[BlackElo "2346"]
[PlyCount "61"]
[EventDate "2023.09.14"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "PER"]
[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 Nf6 4. d3 h6 5. 0-0 d6 6. c3 g5 7. Na3 Bg7 8. Bb3 Nh5 9. Nc4 Nf4 10. Ne3 h5 11. g3 Nh3+ 12. Kg2 Bf6 13. Ng1 Nxg1 14. Kxg1 Bh3 15. Re1 Qd7 16. Qf3 Rh6 17. Nd5 Bd8 18. Ba4 a6 19. Qe2 h4 20. Be3 Qe6 21. Bxg5 Rg6 22. Bxh4 Kd7 23. Bxd8 Rxd8 24. Bb3 Qe8 25. Qh5 Qh8 26. Qxh8 Rxh8 27. Ne3 Nd8 28. d4 c6 29. dxe5 dxe5 30. Rad1+ Kc7 31. f3 1/2-1/2

[Event "South America-ch 1st"]
[Site "Lima"]
[Date "2023.09.21"]
[Round "8"]
[White "Barrientos Chavarriaga, Sergio E"]
[Black "Zambrana, Oswaldo"]
[Result "0-1"]
[ECO "D30"]
[WhiteElo "2457"]
[BlackElo "2380"]
[PlyCount "64"]
[EventDate "2023.09.14"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "PER"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nf3 h6 4. g3 Nf6 5. Bg2 Bd6 6. 0-0 0-0 7. Nc3 Nc6 8. e3 dxc4 9. Nd2 e5 10. d5 Na5 11. Qe2 Bg4 12. f3 Bd7 13. Nxc4 Nxc4 14. Qxc4 c6 15. Rd1 cxd5 16. Nxd5 Rc8 17. Qd3 Be6 18. e4 Bxd5 19. exd5 Qb6+ 20. Kh1 Rfe8 21. Qf5 Bc5 22. Bd2 Rcd8 23. f4 g6 24. Qh3 h5 25. f5 Ng4 26. Be1 Bb4 27. Bf3 Bxe1 28. Bxg4 hxg4 29. Qxg4 Bf2 30. Rf1 Rxd5 31. fxg6 fxg6 32. Qc4 Red8 0-1

[Event "South America-ch 1st"]
[Site "Lima"]
[Date "2023.09.20"]
[Round "7"]
[White "Zambrana, Oswaldo"]
[Black "Tomiello, Lucas Costamilan"]
[Result "1-0"]
[ECO "B33"]
[WhiteElo "2380"]
[BlackElo "2253"]
[PlyCount "73"]
[EventDate "2023.09.14"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "PER"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Nd5 Nxd5 8. exd5 Nb8 9. a4 Be7 10. Be2 0-0 11. Bd2 a6 12. Na3 a5 13. 0-0 Nd7 14. Bb5 f5 15. Nc4 f4 16. Ra3 b6 17. b4 axb4 18. Bxb4 Rf6 19. Re1 Rh6 20. Qf3 Rb8 21. a5 bxa5 22. Bxa5 Qf8 23. Bc6 Nf6 24. Bc7 Bg4 25. Qc3 Rc8 26. f3 Bf5 27. Ra7 e4 28. Nb6 exf3 29. Qxf3 Ng4 30. Nxc8 Bxc8 31. Bb6 Ne5 32. Qb3 f3 33. Ra8 Rg6 34. g3 Qf5 35. Rxe5 dxe5 36. d6+ Re6 37. Rxc8+ 1-0

[Event "South America-ch 1st"]
[Site "Lima"]
[Date "2023.09.19"]
[Round "6"]
[White "Flores Quillas, Diego Saul Rodrigo"]
[Black "Zambrana, Oswaldo"]
[Result "1/2-1/2"]
[ECO "B31"]
[WhiteElo "2357"]
[BlackElo "2380"]
[PlyCount "55"]
[EventDate "2023.09.14"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "PER"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. Bxc6 dxc6 5. h3 Qc7 6. d3 e5 7. Nc3 Nf6 8. Be3 h6 9. Qd2 Be6 10. a3 g5 11. g4 0-0-0 12. Qe2 Nd7 13. Nd2 Be7 14. Rb1 Nf8 15. b4 Ng6 16. Na4 Nf4 17. Bxf4 gxf4 18. Nf3 h5 19. g5 c4 20. dxc4 Rd7 21. Nc3 Rhd8 22. Kf1 Rd4 23. Nxd4 Rxd4 24. Qxh5 Rxc4 25. Qf3 Bxg5 26. Rd1 Qe7 27. Rg1 Qf6 28. Rd3 1/2-1/2

[Event "South America-ch 1st"]
[Site "Lima"]
[Date "2023.09.18"]
[Round "5"]
[White "Zambrana, Oswaldo"]
[Black "Cori, Jorge Moise"]
[Result "1/2-1/2"]
[ECO "C50"]
[WhiteElo "2380"]
[BlackElo "2627"]
[PlyCount "24"]
[EventDate "2023.09.14"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "PER"]
[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 Bc5 4. 0-0 Nf6 5. d3 d6 6. a4 a5 7. Be3 Ba7 8. Nbd2 h6 9. Ba2 0-0 10. c3 Be6 11. Bxe6 fxe6 12. Qb3 Qd7 1/2-1/2

[Event "South America-ch 1st"]
[Site "Lima"]
[Date "2023.09.17"]
[Round "4"]
[White "Fernandez, Fernando"]
[Black "Zambrana, Oswaldo"]
[Result "0-1"]
[ECO "B40"]
[WhiteElo "2418"]
[BlackElo "2380"]
[PlyCount "46"]
[EventDate "2023.09.14"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "PER"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. c3 Nf6 4. Bd3 Nc6 5. 0-0 Be7 6. Bc2 Qc7 7. Re1 b6 8. d4 cxd4 9. cxd4 Nb4 10. Ba4 Ba6 11. Nc3 0-0 12. e5 Nfd5 13. Nxd5 Nxd5 14. Bg5 Bxg5 15. Nxg5 f6 16. Rc1 Qd8 17. Ne4 Qe7 18. Bb3 Bb7 19. exf6 Nxf6 20. Nc3 Qf7 21. Qd3 Nh5 22. Qe3 Nf4 23. Ne4 Qg6 0-1

[Event "South America-ch 1st"]
[Site "Lima"]
[Date "2023.09.16"]
[Round "3"]
[White "Zambrana, Oswaldo"]
[Black "Vera Siguenas, Deivy Anthoni"]
[Result "1/2-1/2"]
[ECO "C50"]
[WhiteElo "2380"]
[BlackElo "2463"]
[PlyCount "24"]
[EventDate "2023.09.14"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "PER"]
[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 Bc5 4. 0-0 Nf6 5. d3 d6 6. a4 a6 7. Be3 Ba7 8. Nbd2 h6 9. Bxa7 Rxa7 10. Ba2 Nh5 11. Nc4 Nf4 12. Ne3 0-0 1/2-1/2

[Event "South America-ch 1st"]
[Site "Lima"]
[Date "2023.09.15"]
[Round "2"]
[White "Hernandez Ojeda, Garry Anatholy"]
[Black "Zambrana, Oswaldo"]
[Result "0-1"]
[ECO "B33"]
[WhiteElo "2022"]
[BlackElo "2380"]
[PlyCount "58"]
[EventDate "2023.09.14"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "PER"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6 8. Na3 b5 9. Bxf6 gxf6 10. Nd5 f5 11. Bxb5 axb5 12. Nxb5 Ra4 13. Nbc7+ Kd7 14. c4 Ra7 15. Nb5 Qa5+ 16. b4 Nxb4 17. 0-0 Nxd5 18. Qxd5 Ke8 19. exf5 Bxf5 20. Nxd6+ Bxd6 21. Qxd6 Bc8 22. Rfe1 Re7 23. Qc6+ Bd7 24. Qb7 Kf8 25. Re3 Bf5 26. Qf3 e4 27. Qh5 Qe5 28. Rd1 Kg7 29. f4 Qxf4 0-1

[Event "South America-ch 1st"]
[Site "Lima"]
[Date "2023.09.14"]
[Round "1"]
[White "Zambrana, Oswaldo"]
[Black "Navarro Ariza, Justin Jeshua"]
[Result "1-0"]
[ECO "B98"]
[WhiteElo "2380"]
[BlackElo "1904"]
[PlyCount "111"]
[EventDate "2023.09.14"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "PER"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. Qe2 Be7 8. f4 0-0 9. 0-0-0 Qc7 10. Nf3 Nc6 11. Kb1 b5 12. e5 dxe5 13. fxe5 Nd5 14. Nxd5 exd5 15. Bxe7 Qxe7 16. Qe3 Bg4 17. Rxd5 Rad8 18. Rxd8 Rxd8 19. Bd3 Bxf3 20. Qxf3 Nxe5 21. Qe4 f5 22. Qxf5 Nxd3 23. cxd3 Qe2 24. d4 Qxg2 25. Re1 h6 26. Qe6+ Kh7 27. Qe4+ Qg6 28. Kc1 Rf8 29. Qxg6+ Kxg6 30. Rg1+ Kf7 31. Kd2 Ke6 32. Rxg7 Rf2+ 33. Kc3 b4+ 34. Kb3 Rxh2 35. Rg6+ Kd5 36. Rxa6 Kxd4 37. Ra5 h5 38. Rb5 h4 39. Rxb4+ Kc5 40. Rg4 h3 41. Rh4 Rh1 42. a4 h2 43. Rh5+ Kc6 44. Kb4 Rg1 45. Rxh2 Rg4+ 46. Ka5 Rg5+ 47. Ka6 Kc5 48. Rh4 Kc6 49. Rc4+ Kd5 50. Rc2 Rg6+ 51. Kb5 Rg8 52. Rd2+ Ke4 53. a5 Ke3 54. Rh2 Rg5+ 55. Ka4 Kd4 56. b4 1-0

[Event "BOL-ch"]
[Site "Santa Cruz"]
[Date "2023.06.11"]
[Round "9"]
[White "Parraga, Alejandro"]
[Black "Zambrana, Oswaldo"]
[Result "1/2-1/2"]
[ECO "D66"]
[WhiteElo "2071"]
[BlackElo "2386"]
[PlyCount "29"]
[EventDate "2023.06.06"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "BOL"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 d5 3. c4 e6 4. Nc3 c6 5. e3 Nbd7 6. Bd3 dxc4 7. Bxc4 b5 8. Bd3 Bb7 9. 0-0 a6 10. Qe2 c5 11. Rd1 cxd4 12. exd4 Be7 13. Bg5 0-0 14. Rac1 Rc8 15. a3 1/2-1/2

[Event "BOL-ch"]
[Site "Santa Cruz"]
[Date "2023.06.10"]
[Round "7"]
[White "Zambrana, Oswaldo"]
[Black "Bolanos, Fernando"]
[Result "1-0"]
[ECO "B69"]
[WhiteElo "2386"]
[BlackElo "2241"]
[PlyCount "53"]
[EventDate "2023.06.06"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "BOL"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bg5 e6 7. Qd2 a6 8. 0-0-0 Bd7 9. f4 Be7 10. Nf3 b5 11. Bxf6 gxf6 12. Kb1 Qb6 13. f5 h5 14. g3 0-0-0 15. Bh3 Kb8 16. fxe6 fxe6 17. Ne2 d5 18. exd5 Bc8 19. Nf4 Nb4 20. Qe2 e5 21. Bxc8 Qa5 22. a3 Nxc2 23. Qxc2 Rxc8 24. Qe4 Bxa3 25. Nxe5 fxe5 26. Qxe5+ Ka8 27. d6 1-0

[Event "BOL-ch"]
[Site "Santa Cruz"]
[Date "2023.06.10"]
[Round "8"]
[White "Zambrana, Oswaldo"]
[Black "Ticona Rocabado, Licael Roderick"]
[Result "1/2-1/2"]
[ECO "C07"]
[WhiteElo "2386"]
[BlackElo "2285"]
[PlyCount "120"]
[EventDate "2023.06.06"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "BOL"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 Nc6 5. exd5 Qxd5 6. Bc4 Qd7 7. 0-0 cxd4 8. Nb3 a6 9. Nbxd4 Nxd4 10. Nxd4 Qc7 11. b3 Bd6 12. Re1 Ne7 13. Qh5 Qc5 14. Qxc5 Bxc5 15. Bb2 0-0 16. Nf3 Rd8 17. Red1 Bd7 18. Ne5 Be8 19. Be2 Nc6 20. Nd3 Ba7 21. Bf3 f6 22. c3 Rac8 23. Ba3 Bg6 24. Nf4 Bf7 25. Nd3 Bg6 26. Nf4 Bf7 27. h4 e5 28. Nd3 Bg6 29. Nc5 Bxc5 30. Bxc5 e4 31. Bg4 f5 32. Be2 Ne5 33. Rxd8+ Rxd8 34. Rd1 Rxd1+ 35. Bxd1 Nd3 36. Bd4 Bf7 37. c4 g6 38. g3 Kf8 39. Kf1 Ke8 40. a3 Kd7 41. Ke2 b5 42. cxb5 Nc1+ 43. Kd2 Nxb3+ 44. Bxb3 Bxb3 45. bxa6 Kc6 46. Ke3 h6 47. Kf4 Bd1 48. Ke5 g5 49. Kxf5 gxh4 50. gxh4 Bf3 51. Kg6 h5 52. a4 Kc7 53. Ba7 Bd1 54. a5 Bg4 55. Kg5 Bf3 56. Kf4 Bh1 57. Ke5 Bf3 58. Kf5 Bg2 59. Ke5 Bf3 60. Kf5 Bg2 1/2-1/2

[Event "BOL-ch"]
[Site "Santa Cruz"]
[Date "2023.06.09"]
[Round "6"]
[White "Mendoza, Rodrigo"]
[Black "Zambrana, Oswaldo"]
[Result "0-1"]
[ECO "E16"]
[WhiteElo "2195"]
[BlackElo "2386"]
[PlyCount "28"]
[EventDate "2023.06.06"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "BOL"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Bd2 c5 5. g3 b6 6. Bg2 Bb7 7. a3 Bxd2+ 8. Qxd2 cxd4 9. 0-0 Bxf3 10. Bxf3 Nc6 11. Rd1 d5 12. cxd5 Nxd5 13. Bxd5 Qxd5 14. e3 Ne5 0-1

[Event "BOL-ch"]
[Site "Santa Cruz"]
[Date "2023.06.08"]
[Round "4"]
[White "Titichoca Daza, Daniel Henry"]
[Black "Zambrana, Oswaldo"]
[Result "1/2-1/2"]
[ECO "B33"]
[WhiteElo "2187"]
[BlackElo "2386"]
[PlyCount "45"]
[EventDate "2023.06.06"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "BOL"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Nd5 Nxd5 8. exd5 Nb8 9. a4 Be7 10. Bd2 0-0 11. Be2 f5 12. 0-0 a6 13. Na3 f4 14. Nc4 Bf5 15. a5 Nd7 16. Bb4 Rf6 17. Bg4 g6 18. Re1 Rc8 19. b3 Qf8 20. Rc1 Bxg4 21. Qxg4 Rf5 22. Qf3 Nf6 23. Nd2 1/2-1/2

[Event "BOL-ch"]
[Site "Santa Cruz"]
[Date "2023.06.08"]
[Round "5"]
[White "Zambrana, Oswaldo"]
[Black "Almendras, Elias"]
[Result "1-0"]
[ECO "B77"]
[WhiteElo "2386"]
[BlackElo "1942"]
[PlyCount "71"]
[EventDate "2023.06.06"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "BOL"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. Bc4 0-0 8. Bb3 d6 9. f3 Bd7 10. Qd2 Rc8 11. h4 Nxd4 12. Bxd4 b5 13. a4 a6 14. h5 e5 15. h6 Bh8 16. Be3 b4 17. Nd5 Nxd5 18. Bxd5 Qc7 19. Bb3 d5 20. exd5 Qd6 21. 0-0-0 Bf5 22. Kb1 g5 23. Rh5 f6 24. f4 Bg6 25. fxe5 fxe5 26. Rxg5 Rf7 27. Rg4 a5 28. Rc4 Rxc4 29. Bxc4 Rc7 30. Bb3 Bf6 31. Rf1 Bf7 32. Qe2 e4 33. Bf4 Qc5 34. d6 Qd4 35. Bc1 Kf8 36. Qa6 1-0

[Event "BOL-ch"]
[Site "Santa Cruz"]
[Date "2023.06.07"]
[Round "2"]
[White "Mayta Aiza, Maveric"]
[Black "Zambrana, Oswaldo"]
[Result "1/2-1/2"]
[ECO "B26"]
[WhiteElo "1963"]
[BlackElo "2386"]
[PlyCount "120"]
[EventDate "2023.06.06"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "BOL"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6 6. Be3 Nf6 7. h3 0-0 8. Nge2 e5 9. Qd2 Nd4 10. Nd1 d5 11. c3 Nxe2 12. Qxe2 d4 13. Bd2 Re8 14. 0-0 Be6 15. c4 Rb8 16. b3 a6 17. Nb2 b5 18. Rfd1 Nd7 19. Rab1 Qe7 20. Rf1 Kh8 21. Kh1 Qd6 22. Rbe1 Qf8 23. Qd1 Bh6 24. Qc1 Bxd2 25. Qxd2 Qg7 26. Nd1 g5 27. Kh2 Rg8 28. f3 h5 29. Rh1 Qf6 30. Nf2 Rg6 31. Kg1 Rbg8 32. Qa5 bxc4 33. dxc4 h4 34. g4 Qd8 35. Qxd8 Rxd8 36. Nd3 a5 37. Kf2 Rb8 38. Rb1 Rgg8 39. Rhc1 Rb6 40. Nb2 Ra8 41. Bf1 Kg7 42. Be2 Kf6 43. Nd3 Ke7 44. a3 Rab8 45. Bd1 Ra6 46. Ke2 f6 47. Kd2 Rc8 48. Nb2 Ra7 49. Na4 Rb7 50. Ra1 Nf8 51. Nb2 Ng6 52. Nd3 Nf4 53. Nxf4 gxf4 54. a4 Rcb8 55. Rab1 Kd6 56. Bc2 Rb4 57. Kd3 R4b7 58. Rg1 Rg7 59. Ke2 Rbg8 60. Rbd1 Bd7 1/2-1/2

[Event "BOL-ch"]
[Site "Santa Cruz"]
[Date "2023.06.07"]
[Round "3"]
[White "Zambrana, Oswaldo"]
[Black "Ferrufino, Boris"]
[Result "1/2-1/2"]
[ECO "B56"]
[WhiteElo "2386"]
[BlackElo "1905"]
[PlyCount "84"]
[EventDate "2023.06.06"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "BOL"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Bb5+ Nbd7 7. Nf5 a6 8. Ba4 b5 9. Bb3 Nc5 10. Bg5 Bxf5 11. exf5 Be7 12. Bxf6 Bxf6 13. 0-0 0-0 14. Nd5 e4 15. c3 Re8 16. Bc2 Re5 17. f4 exf3 18. Qxf3 Rc8 19. Rad1 Nd7 20. Kh1 h6 21. Bb3 Qe8 22. Nxf6+ Nxf6 23. Rxd6 a5 24. Rd2 a4 25. Bc2 a3 26. bxa3 Re3 27. Qf4 Rexc3 28. Bb3 Qe7 29. Qb4 Qe3 30. Qd4 Qe7 31. Rdd1 Qxa3 32. h3 R3c7 33. Rfe1 Re7 34. Kh2 Rce8 35. Rxe7 Qxe7 36. Rc1 Rd8 37. Qf4 Nh5 38. Qc7 Rd7 39. Qb8+ Rd8 40. Qc7 Rd7 41. Qb8+ Rd8 42. Qc7 Rd7 1/2-1/2

[Event "BOL-ch"]
[Site "Santa Cruz"]
[Date "2023.06.06"]
[Round "1"]
[White "Zambrana, Oswaldo"]
[Black "Gemy Vargas, Jose Daniel"]
[Result "1-0"]
[ECO "C54"]
[WhiteElo "2386"]
[BlackElo "2330"]
[PlyCount "55"]
[EventDate "2023.06.06"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "BOL"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. 0-0 Nf6 5. d3 d6 6. c3 a5 7. Re1 h6 8. a4 0-0 9. h3 Be6 10. Nbd2 Qb8 11. Nh4 Ne7 12. Qf3 Nh7 13. Nf1 c6 14. Ng3 d5 15. Ba2 Ng5 16. Bxg5 hxg5 17. Nhf5 Rd8 18. Qg4 Nxf5 19. exf5 Bd7 20. Qxg5 f6 21. Qg4 Be8 22. d4 Bd6 23. c4 exd4 24. cxd5 c5 25. Re7 Bxe7 26. d6+ Kf8 27. Qh4 Bxd6 28. Qh8+ 1-0

[Event "American Continental 17th"]
[Site "Juan Dolio"]
[Date "2023.05.23"]
[Round "11"]
[White "Zambrana, Oswaldo"]
[Black "Cori, Jorge Moise"]
[Result "0-1"]
[ECO "C54"]
[WhiteElo "2369"]
[BlackElo "2650"]
[PlyCount "60"]
[EventDate "2023.05.15"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "DOM"]
[SourceTitle "CBM 214 Extra"]
[Source "ChessBase"]
[SourceDate "2023.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.07.31"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. 0-0 Nf6 5. d3 d6 6. c3 h6 7. Re1 0-0 8. h3 a5 9. Nbd2 Be6 10. Bb5 Ba7 11. Bxc6 bxc6 12. d4 exd4 13. cxd4 Qb8 14. b3 Re8 15. Bb2 d5 16. e5 Nd7 17. Rc1 c5 18. dxc5 Bxc5 19. Nf1 a4 20. Ng3 axb3 21. axb3 Ra2 22. Bc3 Bxf2+ 23. Kh2 Bxe1 24. Qxe1 c5 25. Nh5 d4 26. Qg3 g6 27. Bd2 Bd5 28. Bf4 Qxb3 29. Rf1 Qd3 30. Kg1 Qf5 0-1

[Event "American Continental 17th"]
[Site "Juan Dolio"]
[Date "2023.05.22"]
[Round "10"]
[White "Corrales Jimenez, Fidel"]
[Black "Zambrana, Oswaldo"]
[Result "1-0"]
[ECO "B41"]
[WhiteElo "2489"]
[BlackElo "2369"]
[PlyCount "79"]
[EventDate "2023.05.15"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "DOM"]
[SourceTitle "CBM 214 Extra"]
[Source "ChessBase"]
[SourceDate "2023.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.07.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 c5 4. Nf3 cxd4 5. Nxd4 a6 6. e4 Qc7 7. a3 b6 8. Be2 Bb7 9. Qd3 Nc6 10. Nxc6 Bxc6 11. Be3 Be7 12. Rc1 Qb7 13. f3 d6 14. 0-0 0-0 15. Rfd1 Rfd8 16. b4 h6 17. a4 Be8 18. f4 d5 19. cxd5 Bxb4 20. Bd4 Be7 21. Bf3 Rac8 22. d6 Bf8 23. e5 Nd5 24. Nxd5 exd5 25. Bg4 Rc4 26. Rxc4 dxc4 27. Qxc4 Bc6 28. Qc2 Rb8 29. Rc1 Be4 30. Qa2 Bd5 31. Qe2 Bc6 32. h3 b5 33. a5 b4 34. Bb6 g6 35. Rb1 h5 36. Bf3 Bh6 37. Rxb4 Rc8 38. e6 fxe6 39. Qxe6+ Kh7 40. Rc4 1-0

[Event "American Continental 17th"]
[Site "Juan Dolio"]
[Date "2023.05.21"]
[Round "9"]
[White "Zambrana, Oswaldo"]
[Black "Supi, Luis Paulo"]
[Result "1-0"]
[ECO "B94"]
[WhiteElo "2369"]
[BlackElo "2603"]
[PlyCount "97"]
[EventDate "2023.05.15"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "DOM"]
[SourceTitle "CBM 214 Extra"]
[Source "ChessBase"]
[SourceDate "2023.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.07.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 Nbd7 7. Qe2 h6 8. Bh4 e5 9. Nf5 g6 10. Ne3 Be7 11. 0-0-0 b5 12. Bxf6 Nxf6 13. Ncd5 Be6 14. g3 Rc8 15. Bg2 Nxd5 16. exd5 Bd7 17. Kb1 Kf8 18. f4 exf4 19. gxf4 Bf6 20. Qd2 Bg7 21. c3 Qh4 22. f5 b4 23. cxb4 gxf5 24. Rc1 Ke7 25. Rce1 Be5 26. Rhf1 Rhg8 27. Rxf5 f6 28. Rf2 Kf7 29. Bf1 Rg1 30. Bxa6 Qe4+ 31. Ka1 Rxe1+ 32. Qxe1 Rb8 33. Nc2 Qg6 34. a3 Re8 35. Qd2 f5 36. Bd3 Rf8 37. Ne3 Ke7 38. Ka2 Qh5 39. Nc4 Qh4 40. Nxe5 dxe5 41. Qe3 e4 42. Qc5+ Kf7 43. Bc4 Rc8 44. d6+ Kf8 45. Rxf5+ Kg7 46. Qe5+ Kg6 47. Bf7+ Kh7 48. Bh5 Kg8 49. Rf6 1-0

[Event "American Continental 17th"]
[Site "Juan Dolio"]
[Date "2023.05.20"]
[Round "8"]
[White "Zambrana, Oswaldo"]
[Black "Mareco, Sandro"]
[Result "1-0"]
[ECO "C50"]
[WhiteElo "2369"]
[BlackElo "2633"]
[PlyCount "85"]
[EventDate "2023.05.15"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "DOM"]
[SourceTitle "CBM 214 Extra"]
[Source "ChessBase"]
[SourceDate "2023.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.07.31"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. d3 Nf6 5. 0-0 a5 6. a4 d6 7. c3 h6 8. Na3 0-0 9. h3 Ne7 10. Nc2 Ba7 11. Ne3 c6 12. Ba2 Ng6 13. Nf5 d5 14. Qc2 Be6 15. Re1 Qd7 16. g4 Rfe8 17. Be3 Bxe3 18. fxe3 Rad8 19. Rad1 Qc7 20. Bb1 Qb6 21. Qf2 dxe4 22. dxe4 Qb3 23. Qc2 Rxd1 24. Rxd1 Nxe4 25. Nd2 Qxc2 26. Bxc2 Nxd2 27. Rxd2 Rb8 28. Kf2 Kf8 29. Nd6 Ne7 30. Nxb7 Nd5 31. Nxa5 Rxb2 32. Nxc6 f6 33. Ke1 Rb6 34. Nd8 Bg8 35. a5 Rb8 36. Nc6 Rc8 37. Nb4 Nxe3 38. Be4 Nc4 39. a6 Nxd2 40. Kxd2 Bc4 41. a7 Bf1 42. h4 Bh3 43. Na6 1-0

[Event "American Continental 17th"]
[Site "Juan Dolio"]
[Date "2023.05.19"]
[Round "7"]
[White "Camacho Campusano, David Daniel"]
[Black "Zambrana, Oswaldo"]
[Result "0-1"]
[ECO "B33"]
[WhiteElo "2176"]
[BlackElo "2369"]
[PlyCount "108"]
[EventDate "2023.05.15"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "DOM"]
[SourceTitle "CBM 214 Extra"]
[Source "ChessBase"]
[SourceDate "2023.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.07.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6 8. Na3 b5 9. Bxf6 gxf6 10. Nd5 Bg7 11. g3 f5 12. Bg2 0-0 13. exf5 e4 14. c3 Bxf5 15. Ne3 Bg6 16. Nac2 Ne5 17. 0-0 Nd3 18. Rb1 f5 19. f4 d5 20. Kh1 Qb6 21. g4 Rad8 22. Qe2 Qd6 23. gxf5 Bxf5 24. Nxf5 Rxf5 25. Ne3 Rxf4 26. Rxf4 Nxf4 27. Qg4 Rf8 28. Nf5 Qe5 29. Nd4 Nd3 30. Qe6+ Kh8 31. Qxe5 Bxe5 32. Nc2 Rf2 33. Ne3 Nf4 34. Bf1 Bb8 35. a4 bxa4 36. Bxa6 Nh3 37. Ng2 Rd2 38. Bb5 Ba7 39. Bxa4 Nf2+ 40. Kg1 Kg7 41. Ra1 Bb6 42. Bc6 Nh3+ 43. Kh1 Kf6 44. b4 Nf2+ 45. Kg1 Nd1+ 46. Kf1 Rf2+ 47. Ke1 Nxc3 48. Ra6 Rxg2 49. Rxb6 Ke5 50. Rb8 e3 51. Kf1 Rxh2 52. Kg1 Rb2 53. Rh8 Kd6 54. b5 Rb1+ 0-1

[Event "American Continental 17th"]
[Site "Juan Dolio"]
[Date "2023.05.19"]
[Round "6"]
[White "Zambrana, Oswaldo"]
[Black "Quesada Perez, Luis Ernesto"]
[Result "1/2-1/2"]
[ECO "B76"]
[WhiteElo "2369"]
[BlackElo "2559"]
[PlyCount "196"]
[EventDate "2023.05.15"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "DOM"]
[SourceTitle "CBM 214 Extra"]
[Source "ChessBase"]
[SourceDate "2023.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.07.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. Qd2 Nc6 8. f3 0-0 9. 0-0-0 d5 10. exd5 Nxd5 11. Nxc6 bxc6 12. Bd4 e5 13. Bc5 Re8 14. Ne4 Qc7 15. Bc4 Rd8 16. g4 Be6 17. Qe1 h6 18. h4 f5 19. gxf5 gxf5 20. Ng3 Qf7 21. Qa5 Kh7 22. Bb3 Bf6 23. Qa6 Rg8 24. Nxf5 Bxf5 25. Qxc6 Rac8 26. Qxd5 Qxd5 27. Rxd5 Rg2 28. c3 Rg3 29. Bxa7 Rxf3 30. Bd1 Rf4 31. Be3 Rxh4 32. Rxh4 Bxh4 33. Rxe5 Kg6 34. Bxh6 Bf6 35. Ra5 Rh8 36. Bh5+ Kxh5 37. Rxf5+ Kg6 38. Rxf6+ Kxf6 39. Be3 Ra8 40. Kb1 Ke5 41. b3 Ke4 42. Bd4 Rg8 43. a4 Rg2 44. a5 Kd5 45. a6 Kc6 46. a7 Kb7 47. b4 Rh2 48. b5 Rh5 49. b6 Rh2 50. Kc1 Rg2 51. Kd1 Rh2 52. Be3 Ka8 53. c4 Rg2 54. c5 Rh2 55. Bf4 Ra2 56. Bd2 Rb2 57. Ke1 Ra2 58. Be3 Rc2 59. Kf1 Rb2 60. Bf2 Rc2 61. Kg2 Rc3 62. Bd4 Rd3 63. Be5 Rd5 64. Bd6 Rd3 65. Kf2 Rc3 66. Ke2 Rb3 67. Kd2 Rf3 68. Be5 Rb3 69. Bd4 Rb4 70. Kc3 Rb1 71. Kc4 Rc1+ 72. Kd5 Rb1 73. Bc3 Rb3 74. Kc4 Rb1 75. Bb4 Rd1 76. Ba3 Ra1 77. Bb2 Rb1 78. Kb3 Rd1 79. Bc3 Rb1+ 80. Kc4 Rc1 81. Kd3 Rd1+ 82. Ke4 Rc1 83. Bd4 Rc4 84. Kd3 Rc1 85. Be3 Rb1 86. Kc2 Rb4 87. Bf2 Rb5 88. Kc3 Rb1 89. Be3 Re1 90. Kd3 Rd1+ 91. Kc2 Re1 92. b7+ Kxa7 93. Kd2 Rxe3 94. Kxe3 Kxb7 95. c6+ Kc7 96. Kd4 Kd6 97. c7 Kd7 98. Kc5 Kxc7 1/2-1/2

[Event "American Continental 17th"]
[Site "Juan Dolio"]
[Date "2023.05.17"]
[Round "4"]
[White "Zambrana, Oswaldo"]
[Black "Albornoz Cabrera, Carlos Daniel"]
[Result "0-1"]
[ECO "B94"]
[WhiteElo "2369"]
[BlackElo "2586"]
[PlyCount "38"]
[EventDate "2023.05.15"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "DOM"]
[SourceTitle "CBM 214 Extra"]
[Source "ChessBase"]
[SourceDate "2023.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.07.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 Nbd7 7. Qe2 h6 8. Bh4 g6 9. f4 e5 10. 0-0-0 exd4 11. e5 dxc3 12. exf6+ Ne5 13. fxe5 Be6 14. exd6 Qa5 15. d7+ Kd8 16. bxc3 Qxc3 17. Rd3 Ba3+ 18. Kd1 Qa1+ 19. Kd2 Qc1+ 0-1

[Event "American Continental 17th"]
[Site "Juan Dolio"]
[Date "2023.05.15"]
[Round "1"]
[White "King Rodriguez, Os Misael"]
[Black "Zambrana, Oswaldo"]
[Result "1/2-1/2"]
[ECO "D37"]
[WhiteElo "1929"]
[BlackElo "2369"]
[PlyCount "90"]
[EventDate "2023.05.15"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "DOM"]
[SourceTitle "CBM 214 Extra"]
[Source "ChessBase"]
[SourceDate "2023.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.07.31"]
[SourceQuality "1"]

1. c4 e6 2. Nc3 Nf6 3. Nf3 d5 4. d4 h6 5. Bf4 Bd6 6. Bxd6 Qxd6 7. e3 0-0 8. Be2 dxc4 9. Bxc4 a6 10. a3 c5 11. dxc5 Qxc5 12. Be2 Nc6 13. Rc1 Rd8 14. Qc2 e5 15. b4 Qe7 16. 0-0 Bg4 17. h3 Bh5 18. Rfd1 e4 19. Nd2 Bxe2 20. Nxe2 Rd3 21. Nc4 Rad8 22. Nf4 Rxd1+ 23. Rxd1 g5 24. Rxd8+ Qxd8 25. Ne2 Qd3 26. Qxd3 exd3 27. Nc1 Ne5 28. Nd2 Nd5 29. g3 Nb6 30. f4 Nec4 31. Nxc4 Nxc4 32. Nxd3 Nxa3 33. Kf2 b6 34. Kf3 gxf4 35. exf4 a5 36. bxa5 bxa5 37. Ke4 Kg7 38. g4 Nc2 39. Nc5 Kf6 40. h4 Nb4 41. h5 Nc6 42. Kd5 Nd8 43. Ne4+ Kg7 44. Kc4 Ne6 45. f5 Nf4 1/2-1/2

[Event "Mar del Plata op 52nd"]
[Site "Mar del Plata"]
[Date "2023.04.02"]
[Round "2"]
[White "Zambrana, Oswaldo"]
[Black "Lucero, Marzo Daniel"]
[Result "1-0"]
[ECO "C55"]
[WhiteElo "2392"]
[BlackElo "2008"]
[PlyCount "79"]
[EventDate "2023.04.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Be7 5. 0-0 0-0 6. Re1 d6 7. a4 Na5 8. Ba2 c5 9. Bg5 Be6 10. Bxf6 Bxf6 11. Nc3 Bxa2 12. Rxa2 Nc6 13. Nd5 Nb4 14. Nxb4 cxb4 15. a5 Qd7 16. Nd2 Rac8 17. Nc4 d5 18. exd5 Qxd5 19. Ra4 Qb5 20. b3 Rfd8 21. Qd2 Qxa4 22. bxa4 Rxc4 23. Qe2 Rcd4 24. Qf3 R4d5 25. g3 R8d7 26. Re4 b3 27. cxb3 Rxd3 28. Qf5 R3d6 29. Rb4 g6 30. Qe4 b6 31. axb6 axb6 32. Qe3 Rc6 33. Rxb6 Rd1+ 34. Kg2 Rxb6 35. Qxb6 Kg7 36. a5 e4 37. a6 Bd4 38. Qd6 Rd3 39. b4 Rd2 40. Kh3 1-0

[Event "Mar del Plata op 52nd"]
[Site "Mar del Plata"]
[Date "2023.04.01"]
[Round "1"]
[White "Ferreyra, Damian"]
[Black "Zambrana, Oswaldo"]
[Result "0-1"]
[ECO "B33"]
[WhiteElo "1802"]
[BlackElo "2392"]
[PlyCount "84"]
[EventDate "2023.04.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6 8. Bxf6 gxf6 9. Na3 b5 10. Nd5 f5 11. Bd3 Be6 12. c3 Bg7 13. Qh5 0-0 14. 0-0 fxe4 15. Bxe4 f5 16. Nf6+ Rxf6 17. Bxc6 Rc8 18. Bb7 Rb8 19. Bxa6 Rh6 20. Qf3 e4 21. Qg3 Kh8 22. Rfd1 Be5 23. Qxe5+ dxe5 24. Rxd8+ Rxd8 25. Bxb5 Rd2 26. b3 Rg6 27. g3 f4 28. Nc4 Bxc4 29. Bxc4 e3 30. fxe3 fxg3 31. h3 Rh6 32. Rf1 Rxh3 33. a4 Kg7 34. Rf7+ Kg6 35. Rf8 g2 36. Rg8+ Kf5 37. Rxg2 Rxg2+ 38. Kxg2 Rxe3 39. a5 Rxc3 40. a6 Ke4 41. b4 Rxc4 42. b5 Ra4 0-1

[Event "Vicente Lopez ProAm 100 Years op"]
[Site "Buenos Aires"]
[Date "2022.10.18"]
[Round "9"]
[White "Gonzalez Culi, Diego"]
[Black "Zambrana, Oswaldo"]
[Result "1-0"]
[ECO "A61"]
[WhiteElo "2111"]
[BlackElo "2417"]
[PlyCount "133"]
[EventDate "2022.10.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 e6 3. c4 c5 4. d5 exd5 5. cxd5 d6 6. Nc3 g6 7. Nd2 Be7 8. e4 a6 9. a4 0-0 10. Be2 Re8 11. 0-0 Bf8 12. Re1 Nbd7 13. Qc2 Rb8 14. a5 Bg7 15. f4 Nh5 16. Bxh5 Qh4 17. Qd1 gxh5 18. Nf3 Qd8 19. Kh1 b5 20. axb6 Rxb6 21. Nd2 Nf6 22. Nf3 Rb4 23. Qc2 h6 24. h3 h4 25. Kh2 Nh5 26. Ra3 Ng3 27. e5 Nf5 28. Qf2 Nd4 29. Nxd4 Rxd4 30. Be3 dxe5 31. Bxd4 exd4 32. Rxe8+ Qxe8 33. Qe2 Qxe2 34. Nxe2 c4 35. Ra4 Bd7 36. Rxc4 Bb5 37. Rc8+ Kh7 38. Nc1 d3 39. Nxd3 Bxd3 40. d6 Bb5 41. Rc7 Kg6 42. f5+ Kf6 43. d7 Ke7 44. d8Q+ Kxd8 45. Rxf7 Bxb2 46. Ra7 Be5+ 47. Kh1 Bd4 48. Rh7 Be3 49. f6 Bg5 50. Rh8+ Kc7 51. f7 Be7 52. f8Q Bxf8 53. Rxf8 a5 54. Rf5 Kb6 55. Rf6+ Kc5 56. Rxh6 a4 57. Rxh4 a3 58. Re4 a2 59. Re1 Bd3 60. Ra1 Bb1 61. g4 Kb5 62. h4 Kb4 63. Kg2 Kb3 64. Kf3 Kb2 65. Rxa2+ Bxa2 66. Kf4 Kb3 67. Ke5 1-0

[Event "Vicente Lopez ProAm 100 Years op"]
[Site "Buenos Aires"]
[Date "2022.10.17"]
[Round "8"]
[White "Zambrana, Oswaldo"]
[Black "Spata, German"]
[Result "0-1"]
[ECO "C07"]
[WhiteElo "2417"]
[BlackElo "2289"]
[PlyCount "140"]
[EventDate "2022.10.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 cxd4 5. exd5 Qxd5 6. Bc4 Qd6 7. 0-0 Nf6 8. Nb3 Nc6 9. Nbxd4 Nxd4 10. Nxd4 Be7 11. b3 0-0 12. Bb2 Qf4 13. g3 Qc7 14. Re1 b6 15. Bf1 Bb7 16. Bg2 Rfd8 17. Qe2 Bxg2 18. Kxg2 Bb4 19. Red1 Bc3 20. Bxc3 Qxc3 21. Qf3 Nd5 22. a4 Rac8 23. Rac1 Qxf3+ 24. Nxf3 Rc3 25. Nd4 Rdc8 26. a5 bxa5 27. Ra1 R3c5 28. c4 Nc7 29. Nf3 g6 30. Rd7 Rb8 31. Nd2 f5 32. h4 h6 33. Re1 e5 34. Re3 a4 35. bxa4 Ne6 36. Rxa7 e4 37. Re7 Nf8 38. Rc3 Rb2 39. Nb3 Rc6 40. h5 gxh5 41. Nd4 Rc5 42. Re8 Rb6 43. a5 Ra6 44. Rb3 Kf7 45. Reb8 Rxc4 46. Nxf5 Rf6 47. R3b7+ Ke6 48. Ne3 Rc6 49. Re8+ Kd6 50. Rxe4 Ne6 51. Ra4 Nc5 52. Rd4+ Ke6 53. f4 Nxb7 54. f5+ Rxf5 55. Nxf5 Kxf5 56. Rb4 Nc5 57. Rc4 Rc7 58. Kh3 Kg5 59. Rd4 Ne6 60. Rd6 Kf5 61. Rd5+ Kg6 62. Rd6 Kf6 63. Rd5 Kg6 64. Rd6 Kf6 65. Rd5 Rc5 66. Rd6 Rxa5 67. Kh4 Re5 68. Ra6 Kg6 69. Ra4 Ng5 70. Ra6+ Re6 0-1

[Event "Vicente Lopez ProAm 100 Years op"]
[Site "Buenos Aires"]
[Date "2022.10.16"]
[Round "7"]
[White "Fier, Alexandr"]
[Black "Zambrana, Oswaldo"]
[Result "1-0"]
[ECO "B30"]
[WhiteElo "2592"]
[BlackElo "2417"]
[PlyCount "91"]
[EventDate "2022.10.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 e6 4. 0-0 Nge7 5. d4 cxd4 6. Nxd4 Qb6 7. Nxc6 bxc6 8. Bd3 Ng6 9. c4 Bd6 10. Nc3 Qc7 11. h3 0-0 12. Be3 Bf4 13. Re1 d6 14. b4 e5 15. Rc1 Bxe3 16. Rxe3 Nf4 17. Bf1 Ne6 18. b5 Nc5 19. Re2 Be6 20. Rd2 Rfd8 21. Qc2 f6 22. Rcd1 a6 23. Rb1 Rab8 24. a4 Bf7 25. Qd1 h6 26. Rdb2 Qa5 27. bxc6 Rbc8 28. Nd5 Re8 29. Qg4 Kf8 30. Rb6 Qxa4 31. R1b4 Qa5 32. Rb1 Qd2 33. Qf3 Kg8 34. Rb7 Nxb7 35. cxb7 Rb8 36. Qa3 Bxd5 37. exd5 Red8 38. Qxa6 Qd4 39. Rb6 Qc5 40. Rc6 Qb4 41. Rc7 e4 42. c5 dxc5 43. Qe6+ Kh8 44. Qe7 Rg8 45. d6 Rbe8 46. Rc8 1-0

[Event "Vicente Lopez ProAm 100 Years op"]
[Site "Buenos Aires"]
[Date "2022.10.16"]
[Round "6"]
[White "Zambrana, Oswaldo"]
[Black "Cuenca Jimenez, Jose Fernando"]
[Result "1/2-1/2"]
[ECO "C54"]
[WhiteElo "2417"]
[BlackElo "2545"]
[PlyCount "146"]
[EventDate "2022.10.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. 0-0 Nf6 5. d3 d6 6. c3 a5 7. a4 h6 8. Na3 0-0 9. Nc2 Be6 10. Ba2 Bxa2 11. Rxa2 d5 12. Qe2 Re8 13. Nh4 Qd7 14. Qf3 dxe4 15. dxe4 Qg4 16. Qxg4 Nxg4 17. Nf5 Rad8 18. Nfe3 Nf6 19. f3 Rd7 20. g3 Red8 21. Kg2 b6 22. Ra1 Rd3 23. Nc4 Ne8 24. Be3 Nd6 25. Nxd6 Bxe3 26. Nxe3 Rxe3 27. Nc4 Red3 28. Kf2 Nb8 29. Ke2 Na6 30. Rfd1 Rxd1 31. Rxd1 Rxd1 32. Kxd1 Nc5 33. Nxe5 Nxa4 34. Nd3 b5 35. Kc2 Kf8 36. Ne5 Nc5 37. Nc6 Nb7 38. Nd4 Nd6 39. e5 c5 40. Nc6 Nc4 41. b3 Ne3+ 42. Kd3 a4 43. bxa4 bxa4 44. c4 a3 45. Na5 a2 46. Nb3 Nf5 47. Ke4 Nd4 48. Na1 Ke7 49. f4 Ke6 50. g4 f5+ 51. exf6 gxf6 52. Ke3 f5 53. h3 Kf6 54. Kf2 Nc6 55. Ke3 Na5 56. Kd3 Nb7 57. Kc3 Nd6 58. Kb3 Ne4 59. Kxa2 Nf2 60. Nb3 Nxh3 61. gxf5 Nxf4 62. Nxc5 Kxf5 63. Nb3 Ke4 64. c5 Kd5 65. Kb2 h5 66. Kc2 h4 67. c6 Kxc6 68. Nd4+ Kd5 69. Nf3 h3 70. Kd2 Ne6 71. Ke3 Ng5 72. Kf2 Ne4+ 73. Kg1 h2+ 1/2-1/2

[Event "Vicente Lopez ProAm 100 Years op"]
[Site "Buenos Aires"]
[Date "2022.10.15"]
[Round "5"]
[White "Campos, Maria Jose"]
[Black "Zambrana, Oswaldo"]
[Result "0-1"]
[ECO "A14"]
[WhiteElo "2270"]
[BlackElo "2417"]
[PlyCount "58"]
[EventDate "2022.10.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]

1. c4 Nf6 2. g3 e6 3. Bg2 d5 4. Nf3 Be7 5. 0-0 0-0 6. b3 d4 7. e3 c5 8. exd4 cxd4 9. d3 Nc6 10. Re1 Nd7 11. Ba3 e5 12. Bxe7 Qxe7 13. Nbd2 f6 14. Nh4 Nc5 15. f4 g5 16. Bd5+ Kh8 17. fxg5 fxg5 18. Qh5 gxh4 19. Bxc6 Nxd3 20. Rf1 Bh3 21. Rxf8+ Rxf8 22. Be4 Nf2 23. Bf3 e4 24. Qd5 Rd8 25. Qa5 b6 26. Qh5 exf3 27. Nxf3 Bg4 28. Qe5+ Qxe5 29. Nxe5 Rf8 0-1

[Event "Vicente Lopez ProAm 100 Years op"]
[Site "Buenos Aires"]
[Date "2022.10.14"]
[Round "4"]
[White "Zambrana, Oswaldo"]
[Black "Delgado Ramirez, Neuris"]
[Result "1/2-1/2"]
[ECO "B32"]
[WhiteElo "2417"]
[BlackElo "2563"]
[PlyCount "39"]
[EventDate "2022.10.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e5 5. Nb5 d6 6. c4 Be7 7. N1c3 a6 8. Na3 f5 9. Bd3 f4 10. Nd5 Nf6 11. 0-0 0-0 12. Nc2 Kh8 13. b3 Rb8 14. Re1 Bg4 15. Be2 Be6 16. Bf1 Ng4 17. Be2 Nf6 18. Bf1 Ng4 19. Be2 Nf6 20. Bf1 1/2-1/2

[Event "Vicente Lopez ProAm 100 Years op"]
[Site "Buenos Aires"]
[Date "2022.10.13"]
[Round "3"]
[White "Silva, Lucas"]
[Black "Zambrana, Oswaldo"]
[Result "0-1"]
[ECO "A67"]
[WhiteElo "2211"]
[BlackElo "2417"]
[PlyCount "38"]
[EventDate "2022.10.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 c5 4. d5 exd5 5. cxd5 d6 6. e4 g6 7. f4 Bg7 8. Bb5+ Nfd7 9. a4 0-0 10. Nf3 a6 11. Be2 Re8 12. 0-0 Qc7 13. e5 c4 14. Qd4 b5 15. axb5 dxe5 16. Qxc4 Qb6+ 17. Kh1 axb5 18. Nxb5 Rxa1 19. Nc7 Rf8 0-1

[Event "Vicente Lopez ProAm 100 Years op"]
[Site "Buenos Aires"]
[Date "2022.10.12"]
[Round "2"]
[White "Zambrana, Oswaldo"]
[Black "Librelato, Kathie Goulart"]
[Result "1/2-1/2"]
[ECO "B68"]
[WhiteElo "2417"]
[BlackElo "2203"]
[PlyCount "117"]
[EventDate "2022.10.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bg5 e6 7. Qd2 a6 8. 0-0-0 Bd7 9. f4 Be7 10. Nf3 b5 11. e5 b4 12. exf6 bxc3 13. Qxc3 gxf6 14. Kb1 Rg8 15. Bh4 Rb8 16. Nd4 Nxd4 17. Qxd4 d5 18. g3 a5 19. Bd3 h6 20. Be2 a4 21. f5 Ba3 22. b3 axb3 23. axb3 Be7 24. fxe6 Bxe6 25. Qa4+ Kf8 26. Qf4 Rg5 27. Rhf1 Kg7 28. Rd4 Bd6 29. Qd2 Be5 30. Bxg5 hxg5 31. Ra4 Rc8 32. Rf3 Qb6 33. Re3 Bf5 34. Bd3 Bd7 35. Ra6 Qd4 36. Rxe5 Qxe5 37. Qf2 Re8 38. Ra7 Qc3 39. Rxd7 Re1+ 40. Qxe1 Qxe1+ 41. Kb2 Qe6 42. Rd8 Qh3 43. Rxd5 Qxh2 44. g4 Qg2 45. Rd4 Qd2 46. Rd7 Qf4 47. Bf5 Qe5+ 48. c3 Qe2+ 49. Kc1 Qe1+ 50. Kc2 Qa1 51. b4 Qa4+ 52. Kd3 Qa6+ 53. Kd4 Qb5 54. Rd5 Qa4 55. Rd7 Qb5 56. Ke3 Qc4 57. Kd2 Qa2+ 58. Kd3 Qa6+ 59. Kd4 1/2-1/2

[Event "Vicente Lopez ProAm 100 Years op"]
[Site "Buenos Aires"]
[Date "2022.10.11"]
[Round "1"]
[White "Montiel, Angel Nathanael"]
[Black "Zambrana, Oswaldo"]
[Result "0-1"]
[ECO "B33"]
[WhiteElo "1963"]
[BlackElo "2417"]
[PlyCount "44"]
[EventDate "2022.10.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Nde2 Bb4 7. a3 Ba5 8. f3 d5 9. b4 d4 10. Nd5 Bb6 11. Bg5 Be6 12. c4 dxc3 13. Nexc3 Nxd5 14. Bxd8 Nxc3 15. Qc2 Rxd8 16. Qxc3 Bd4 17. Qc1 0-0 18. Rb1 Rc8 19. Qd1 Rfd8 20. Qa4 Be3 21. Rd1 Nd4 22. Qa5 Nc2+ 0-1

[Event "Olympiad-44"]
[Site "Chennai"]
[Date "2022.08.09"]
[Round "11.2"]
[White "Croad, Nicholas"]
[Black "Zambrana, Oswaldo"]
[Result "0-1"]
[ECO "B30"]
[WhiteElo "2289"]
[BlackElo "2417"]
[PlyCount "166"]
[EventDate "2022.07.29"]
[EventType "team-swiss"]
[EventRounds "11"]
[EventCountry "IND"]
[SourceTitle "CBM 210"]
[Source "ChessBase"]
[SourceDate "2022.10.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.31"]
[SourceQuality "1"]
[WhiteTeam "New Zealand"]
[BlackTeam "Bolivia"]
[WhiteTeamCountry "NZL"]
[BlackTeamCountry "BOL"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 e6 4. Bxc6 bxc6 5. d3 Qc7 6. Qe2 Ne7 7. e5 Ng6 8. h4 f6 9. exf6 gxf6 10. h5 Nf4 11. Qe4 Bh6 12. Kf1 d5 13. Qa4 e5 14. Nc3 Kf7 15. g3 Rb8 16. a3 Bg4 17. gxf4 Bxf3 18. Rh3 Bg4 19. Rg3 Bd7 20. fxe5 Bxc1 21. Rxc1 Rhg8 22. Re1 Rxg3 23. fxg3 fxe5 24. Qh4 Qd6 25. Re2 h6 26. Rf2+ Kg7 27. Nd1 Rf8 28. Kg2 Rxf2+ 29. Nxf2 Qf6 30. Qxf6+ Kxf6 31. g4 Be6 32. Kg3 Bg8 33. Nd1 Kg5 34. Nf2 Bh7 35. Nh3+ Kf6 36. Nf2 c4 37. b3 cxb3 38. cxb3 a5 39. b4 a4 40. Kf3 Bxd3 41. Nxd3 e4+ 42. Ke3 exd3 43. Kxd3 Kg5 44. Kd4 Kxg4 45. Kc5 Kxh5 46. Kxc6 d4 47. b5 d3 48. b6 d2 49. b7 d1Q 50. b8Q Qf3+ 51. Kd7 Qd3+ 52. Kc6 Qc3+ 53. Kd7 Qxa3 54. Qe5+ Kg4 55. Qe6+ Kg3 56. Qxh6 Qd3+ 57. Kc7 a3 58. Qg5+ Kf3 59. Qh5+ Ke3 60. Qg5+ Ke2 61. Kb7 Qe4+ 62. Kb8 a2 63. Qb5+ Kd1 64. Qb3+ Qc2 65. Qf3+ Kc1 66. Qf1+ Kb2 67. Qf6+ Qc3 68. Qf2+ Kb3 69. Qf7+ Qc4 70. Qf3+ Ka4 71. Qf6 Kb3 72. Qf3+ Kb4 73. Qf8+ Qc5 74. Qf6 Ka5 75. Kb7 Qd5+ 76. Ka7 Qd7+ 77. Ka8 Qa4 78. Kb7 Qe4+ 79. Ka7 Qe3+ 80. Kb7 Qb3+ 81. Ka7 Qa3 82. Qb6+ Ka4 83. Ka6 Qd3+ 0-1

[Event "Olympiad-44"]
[Site "Chennai"]
[Date "2022.08.08"]
[Round "10.2"]
[White "Zambrana, Oswaldo"]
[Black "Liyanage, Ranindu Dilshan"]
[Result "0-1"]
[ECO "C07"]
[WhiteElo "2417"]
[BlackElo "2286"]
[PlyCount "74"]
[EventDate "2022.07.29"]
[EventType "team-swiss"]
[EventRounds "11"]
[EventCountry "IND"]
[SourceTitle "CBM 210"]
[Source "ChessBase"]
[SourceDate "2022.10.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.31"]
[SourceQuality "1"]
[WhiteTeam "Bolivia"]
[BlackTeam "Sri Lanka"]
[WhiteTeamCountry "BOL"]
[BlackTeamCountry "SRI"]

1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 cxd4 5. exd5 Qxd5 6. Bc4 Qd7 7. 0-0 Nc6 8. Nb3 a6 9. Nbxd4 Nxd4 10. Nxd4 Qc7 11. b3 Bd6 12. h3 Ne7 13. Bb2 0-0 14. Re1 Ng6 15. Qh5 b5 16. Bd3 Bb7 17. a4 Bh2+ 18. Kh1 Bxg2+ 19. Kxg2 Nf4+ 20. Kxh2 Nxh5+ 21. Kg1 Nf4 22. Bf1 e5 23. Nxb5 axb5 24. Bxe5 Qxc2 25. Bxf4 bxa4 26. b4 a3 27. Bg2 Qg6 28. Bg3 Ra4 29. b5 Ra5 30. Bc6 h5 31. Kh2 Rc8 32. Bd7 Rc5 33. Ra2 h4 34. Bf4 Rc2 35. Rxc2 Qxc2 36. Kg2 a2 37. Be5 Qd2 0-1

[Event "Olympiad-44"]
[Site "Chennai"]
[Date "2022.08.05"]
[Round "7.2"]
[White "Zambrana, Oswaldo"]
[Black "Brahami, Lamine"]
[Result "1-0"]
[ECO "B98"]
[WhiteElo "2417"]
[BlackElo "2189"]
[PlyCount "61"]
[EventDate "2022.07.29"]
[EventType "team-swiss"]
[EventRounds "11"]
[EventCountry "IND"]
[SourceTitle "CBM 210"]
[Source "ChessBase"]
[SourceDate "2022.10.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.31"]
[SourceQuality "1"]
[WhiteTeam "Bolivia"]
[BlackTeam "Algeria"]
[WhiteTeamCountry "BOL"]
[BlackTeamCountry "ALG"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qe2 Qb6 9. 0-0-0 Nc6 10. Nf3 Qc7 11. e5 dxe5 12. fxe5 Nd7 13. Bxe7 Nxe7 14. Qd2 Ng6 15. Bb5 axb5 16. Nxb5 Qc5 17. Nd6+ Kf8 18. a3 f6 19. Rhf1 Ndxe5 20. Ne4 Nxf3 21. Qd8+ Kf7 22. Nd6+ Qxd6 23. Qxd6 Ng5 24. Qc7+ Ne7 25. h4 h6 26. hxg5 hxg5 27. Rd8 Rh4 28. Qc5 Rg4 29. Rh1 b6 30. Qb5 Kg6 31. Qe8+ 1-0

[Event "Olympiad-44"]
[Site "Chennai"]
[Date "2022.08.03"]
[Round "6.2"]
[White "Subelj, Jan"]
[Black "Zambrana, Oswaldo"]
[Result "1/2-1/2"]
[ECO "B51"]
[WhiteElo "2498"]
[BlackElo "2417"]
[PlyCount "120"]
[EventDate "2022.07.29"]
[EventType "team-swiss"]
[EventRounds "11"]
[EventCountry "IND"]
[SourceTitle "CBM 210"]
[Source "ChessBase"]
[SourceDate "2022.10.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.31"]
[SourceQuality "1"]
[WhiteTeam "Slovenia"]
[BlackTeam "Bolivia"]
[WhiteTeamCountry "SLO"]
[BlackTeamCountry "BOL"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 d6 4. 0-0 Bd7 5. Re1 Nf6 6. c3 a6 7. Bf1 Bg4 8. h3 Bh5 9. g4 Bg6 10. d4 cxd4 11. cxd4 d5 12. exd5 Nxd5 13. Nc3 e6 14. Nxd5 Qxd5 15. Bg2 Bb4 16. Ne5 Qb5 17. Bd2 Bxd2 18. Qxd2 Rd8 19. Nxc6 bxc6 20. Rac1 Rd6 21. Qf4 Ke7 22. Rc5 Qb4 23. Rec1 Qxd4 24. Qxd4 Rxd4 25. Rxc6 Rb8 26. b3 a5 27. Ra6 Rb5 28. Rc7+ Kd8 29. Rca7 Rd1+ 30. Kh2 Rd2 31. Bc6 Rb4 32. Kg3 Rd6 33. Ba4 Rd3+ 34. f3 e5 35. Rxa5 e4 36. Re5 f6 37. Ree7 Rxf3+ 38. Kg2 Rd4 39. Rad7+ Rxd7 40. Rxd7+ Kc8 41. Rxg7 Rc3 42. Rg8+ Kc7 43. Be8 Kd6 44. Bxg6 hxg6 45. Rxg6 Ke5 46. h4 Rc2+ 47. Kg3 Rxa2 48. Rg8 Rc2 49. Re8+ Kd4 50. Rd8+ Ke5 51. h5 Rc3+ 52. Kh4 Rxb3 53. h6 Rb1 54. Kh5 Rh1+ 55. Kg6 Rh4 56. Re8+ Kf4 57. h7 Rxg4+ 58. Kxf6 Rh4 59. h8R Rxh8 60. Rxh8 e3 1/2-1/2

[Event "Olympiad-44"]
[Site "Chennai"]
[Date "2022.08.02"]
[Round "5.2"]
[White "Zambrana, Oswaldo"]
[Black "Thing, Bibek"]
[Result "1-0"]
[ECO "B98"]
[WhiteElo "2417"]
[BlackElo "2260"]
[PlyCount "51"]
[EventDate "2022.07.29"]
[EventType "team-swiss"]
[EventRounds "11"]
[EventCountry "IND"]
[SourceTitle "CBM 210"]
[Source "ChessBase"]
[SourceDate "2022.10.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.31"]
[SourceQuality "1"]
[WhiteTeam "Bolivia"]
[BlackTeam "Nepal"]
[WhiteTeamCountry "BOL"]
[BlackTeamCountry "NEP"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qe2 Nc6 9. 0-0-0 Nxd4 10. Rxd4 Qa5 11. Kb1 h6 12. Bh4 g5 13. Be1 Qb6 14. Bf2 Qa5 15. g3 e5 16. Rd5 Qc7 17. Rd2 Bd7 18. Bg2 Rc8 19. Re1 Qc4 20. Qd1 Qb4 21. a3 Qa5 22. Nd5 Nxd5 23. exd5 f6 24. Qh5+ Kd8 25. Rd3 Qa4 26. Bb6+ 1-0

[Event "Olympiad-44"]
[Site "Chennai"]
[Date "2022.08.01"]
[Round "4.2"]
[White "Anhwere, Benard"]
[Black "Zambrana, Oswaldo"]
[Result "0-1"]
[ECO "E05"]
[WhiteElo "1890"]
[BlackElo "2417"]
[PlyCount "100"]
[EventDate "2022.07.29"]
[EventType "team-swiss"]
[EventRounds "11"]
[EventCountry "IND"]
[SourceTitle "CBM 210"]
[Source "ChessBase"]
[SourceDate "2022.10.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.31"]
[SourceQuality "1"]
[WhiteTeam "Ghana"]
[BlackTeam "Bolivia"]
[WhiteTeamCountry "GHA"]
[BlackTeamCountry "BOL"]

1. d4 Nf6 2. Nf3 e6 3. g3 d5 4. c4 Be7 5. Bg2 0-0 6. 0-0 dxc4 7. Qc2 a6 8. Qxc4 b5 9. Qc2 Bb7 10. Bf4 Bd6 11. Bxd6 cxd6 12. Nbd2 Nbd7 13. Rac1 Qb6 14. e4 Rac8 15. Qd3 Rfd8 16. Rfe1 h6 17. Qe2 e5 18. d5 Qa5 19. a3 Qa4 20. Qe3 b4 21. b3 Qa5 22. Nc4 Qc5 23. Qxc5 Nxc5 24. Na5 Nd3 25. Rxc8 Rxc8 26. Rd1 bxa3 27. Nc4 Nb2 28. Ra1 Nxc4 29. bxc4 Rxc4 30. Nd2 Rc3 31. Bf1 g5 32. Ra2 a5 33. Kg2 Nxd5 34. Nb1 Rc1 35. Nxa3 Nc3 36. Rb2 Bxe4+ 37. f3 Bxf3+ 38. Kxf3 Rxf1+ 39. Kg2 Ra1 40. Nc4 a4 41. Rb8+ Kg7 42. Nxd6 a3 43. Nf5+ Kf6 44. g4 e4 45. Rc8 Ra2+ 46. Kh3 Nd5 47. Rc6+ Ke5 48. Rc5 Rd2 49. Ra5 Kf4 50. Rxa3 Rd3+ 0-1

[Event "Olympiad-44"]
[Site "Chennai"]
[Date "2022.07.30"]
[Round "2.2"]
[White "Paichadze, Luka"]
[Black "Zambrana, Oswaldo"]
[Result "1-0"]
[ECO "B31"]
[WhiteElo "2561"]
[BlackElo "2417"]
[PlyCount "105"]
[EventDate "2022.07.29"]
[EventType "team-swiss"]
[EventRounds "11"]
[EventCountry "IND"]
[SourceTitle "CBM 210"]
[Source "ChessBase"]
[SourceDate "2022.10.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.31"]
[SourceQuality "1"]
[WhiteTeam "Georgia"]
[BlackTeam "Bolivia"]
[WhiteTeamCountry "GEO"]
[BlackTeamCountry "BOL"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. Bxc6 dxc6 5. d3 Bg7 6. Nc3 e5 7. h3 Nf6 8. Nxe5 Nxe4 9. Nxe4 Bxe5 10. 0-0 0-0 11. Nxc5 b6 12. Ne4 c5 13. Re1 Bg7 14. Bg5 f6 15. Bf4 Qd5 16. Nc3 Qd7 17. Qd2 g5 18. Bg3 Bb7 19. Re2 Rae8 20. Rae1 h6 21. Rxe8 Rxe8 22. Rxe8+ Qxe8 23. Qe3 Qc6 24. f3 f5 25. Qe2 Bd4+ 26. Kf1 Kf7 27. Nd1 Qe6 28. Qxe6+ Kxe6 29. Bb8 Kd7 30. c3 Bf6 31. Bxa7 Kc7 32. Ne3 Be7 33. Nc4 b5 34. Na5 Bd5 35. b3 Be6 36. Ke2 f4 37. a3 h5 38. b4 cxb4 39. axb4 Bf6 40. Kd2 g4 41. hxg4 hxg4 42. c4 Be7 43. Kc3 bxc4 44. dxc4 Bh4 45. Bc5 Be1+ 46. Kd4 gxf3 47. gxf3 Bf7 48. Ke4 Bd2 49. Kd3 Be1 50. Nb3 Bg6+ 51. Ke2 Bg3 52. b5 Bf7 53. Na5 1-0

[Event "BOL-ch"]
[Site "Santa Cruz"]
[Date "2022.05.22"]
[Round "9"]
[White "Martinez, Ariel A"]
[Black "Zambrana, Oswaldo"]
[Result "1-0"]
[ECO "B33"]
[WhiteElo "2165"]
[BlackElo "2428"]
[PlyCount "153"]
[EventDate "2022.05.18"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "BOL"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6 8. Na3 b5 9. Nd5 Be7 10. Bxf6 Bxf6 11. c3 Bg5 12. Nc2 Ne7 13. Ncb4 0-0 14. a4 bxa4 15. Rxa4 a5 16. h4 Bh6 17. Bc4 Bd7 18. Nxe7+ Qxe7 19. Nd5 Qd8 20. Ra2 Rc8 21. Qd3 Kh8 22. g3 f5 23. 0-0 fxe4 24. Qxe4 Bf5 25. Qe2 e4 26. Rfa1 Rc5 27. b4 axb4 28. cxb4 Rc8 29. Ba6 Rb8 30. Ra5 Qd7 31. Bc4 Bg4 32. Qe1 Bf3 33. Kh2 Qc6 34. Bb3 Qe8 35. Nc7 Qg6 36. Ne6 Rfe8 37. Ng5 Bxg5 38. Rxg5 Qf6 39. Rb1 e3 40. fxe3 Be4 41. Bd5 Bxb1 42. Qxb1 Re5 43. Rxe5 Qxe5 44. Qb3 Re8 45. b5 Qxe3 46. Qa4 Rb8 47. Bc6 Qf2+ 48. Kh3 d5 49. Qd1 d4 50. Qh5 d3 51. Qe5 Rf8 52. Qd6 d2 53. Bg2 Rg8 54. b6 Qf5+ 55. Kh2 Qc2 56. b7 d1Q 57. b8Q Qxd6 58. Qxd6 Qe2 59. Qc5 Re8 60. Qc6 Qe5 61. Qf3 g6 62. Qf7 Qe7 63. Qc4 Kg7 64. Qc3+ Qe5 65. Qc1 Re7 66. Qd2 h6 67. Qd1 Rc7 68. Bf3 h5 69. Kg2 Qb2+ 70. Kh3 Rc2 71. Qg1 Qe5 72. Bg2 Rc3 73. Bh1 g5 74. hxg5 h4 75. Qa7+ Kg6 76. Qb6+ Kxg5 77. Qd8+ 1-0

[Event "BOL-ch"]
[Site "Santa Cruz"]
[Date "2022.05.22"]
[Round "8"]
[White "Zambrana, Oswaldo"]
[Black "Ticona Rocabado, Licael Roderick"]
[Result "1-0"]
[ECO "C07"]
[WhiteElo "2428"]
[BlackElo "2097"]
[PlyCount "73"]
[EventDate "2022.05.18"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "BOL"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 cxd4 5. exd5 Qxd5 6. Bc4 Qd6 7. 0-0 a6 8. Nb3 Nc6 9. Nbxd4 Nxd4 10. Nxd4 Qc7 11. b3 Bd6 12. h3 Nf6 13. Bb2 e5 14. Re1 0-0 15. Nf3 b5 16. Bf1 e4 17. Nd2 Be5 18. Bxe5 Qxe5 19. a4 Bb7 20. Qe2 Bc6 21. Qe3 Rfd8 22. axb5 axb5 23. Rxa8 Rxa8 24. Nf3 Qd6 25. Nd4 Rb8 26. Nf5 Qe6 27. Qg3 Qxf5 28. Qxb8+ Be8 29. Bd3 g6 30. Rxe4 Qd7 31. Re3 Kg7 32. Qe5 Qc6 33. g4 h6 34. h4 Qd7 35. g5 Qg4+ 36. Rg3 Qd1+ 37. Bf1 1-0

[Event "BOL-ch"]
[Site "Santa Cruz"]
[Date "2022.05.21"]
[Round "6"]
[White "Delgadillo, Adonai"]
[Black "Zambrana, Oswaldo"]
[Result "1/2-1/2"]
[ECO "B33"]
[WhiteElo "2196"]
[BlackElo "2428"]
[PlyCount "88"]
[EventDate "2022.05.18"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "BOL"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6 8. Na3 b5 9. Bxf6 gxf6 10. Nd5 Bg7 11. c3 0-0 12. Nc2 f5 13. exf5 Bxf5 14. Nce3 Be6 15. Qh5 f5 16. Bd3 e4 17. Bc2 Ne7 18. Rd1 Nxd5 19. Nxd5 Rc8 20. 0-0 Rc5 21. Bb3 Bxd5 22. Bxd5+ Kh8 23. Rd2 Qf6 24. Rfd1 Qg6 25. Qe2 Be5 26. Qe3 Rc7 27. f4 exf3 28. Bxf3 Rc4 29. Rd5 Rh4 30. Rxe5 dxe5 31. Qxe5+ Qf6 32. Qc5 Rh6 33. Rd4 Rg6 34. a4 bxa4 35. Rxa4 Qd6 36. Qxd6 Rxd6 37. c4 Rc8 38. Bd5 Rb8 39. b4 Kg7 40. Kf2 Kf6 41. Ke3 Ke5 42. Bf3 f4+ 43. Ke2 Kd4 44. b5 axb5 1/2-1/2

[Event "BOL-ch"]
[Site "Santa Cruz"]
[Date "2022.05.21"]
[Round "7"]
[White "Zambrana, Oswaldo"]
[Black "Gemy Vargas, Jose Daniel"]
[Result "1/2-1/2"]
[ECO "B06"]
[WhiteElo "2428"]
[BlackElo "2367"]
[PlyCount "91"]
[EventDate "2022.05.18"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "BOL"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nc3 d6 4. Nf3 a6 5. h3 b5 6. Bd3 Bb7 7. a4 b4 8. Ne2 Nf6 9. Ng3 0-0 10. 0-0 d5 11. Qe2 dxe4 12. Nxe4 a5 13. c3 Na6 14. Re1 c5 15. Nxc5 Nxc5 16. dxc5 bxc3 17. Bb5 Rc8 18. bxc3 Ne4 19. Bb2 Nxc3 20. Bxc3 Bxc3 21. Rad1 Bd5 22. Ne5 Bxe1 23. Nc6 Bxc6 24. Rxd8 Rfxd8 25. Qxe1 Bxb5 26. axb5 Rxc5 27. Qxe7 Rc1+ 28. Kh2 Rb8 29. Qa3 Rb1 30. Qxa5 R1xb5 31. Qc7 h5 32. h4 R8b7 33. Qc8+ Kh7 34. Qc6 R7b6 35. Qd7 Rf5 36. f3 Rb4 37. Kg3 Kg7 38. Qc7 Ra4 39. Qc3+ Kh7 40. Qc7 Ra2 41. Qc4 Ra1 42. Qc3 Ra4 43. Qc7 Rd4 44. Qa7 Rc4 45. Qb7 Ra4 46. Qc7 1/2-1/2

[Event "BOL-ch"]
[Site "Santa Cruz"]
[Date "2022.05.20"]
[Round "4"]
[White "Titichoca Daza, Daniel Henry"]
[Black "Zambrana, Oswaldo"]
[Result "0-1"]
[ECO "A31"]
[WhiteElo "2189"]
[BlackElo "2428"]
[PlyCount "60"]
[EventDate "2022.05.18"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "BOL"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Qb6 5. Nb3 e6 6. c4 Nf6 7. Nc3 Bb4 8. Bd3 0-0 9. 0-0 Bxc3 10. bxc3 d6 11. Ba3 Rd8 12. Rb1 Qc7 13. Nd4 a6 14. Nxc6 bxc6 15. c5 d5 16. Qe2 e5 17. exd5 cxd5 18. Rb6 e4 19. Bc2 Ng4 20. f4 exf3 21. gxf3 Ne5 22. Bb3 Bh3 23. Rd1 Nc4 24. Bxc4 dxc4 25. Rbd6 Re8 26. Qxc4 Qe7 27. Bc1 Rac8 28. c6 h6 29. Qd4 Rxc6 30. Rd8 Rg6+ 0-1

[Event "BOL-ch"]
[Site "Santa Cruz"]
[Date "2022.05.20"]
[Round "5"]
[White "Zambrana, Oswaldo"]
[Black "Tapia, Mauricio"]
[Result "1-0"]
[ECO "C07"]
[WhiteElo "2428"]
[BlackElo "1904"]
[PlyCount "81"]
[EventDate "2022.05.18"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "BOL"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 cxd4 5. exd5 Qxd5 6. Bc4 Qd6 7. 0-0 Nc6 8. Nb3 a6 9. Nbxd4 Nxd4 10. Nxd4 Qc7 11. Bb3 Bd6 12. Kh1 Ne7 13. c3 0-0 14. Qf3 Rb8 15. Be3 b5 16. Rad1 e5 17. Nc2 Bb7 18. Qh3 Ng6 19. Bd5 a5 20. Bxb7 Rxb7 21. Qf3 Be7 22. a3 Nh4 23. Qe4 f5 24. Qd5+ Kh8 25. f4 e4 26. Nd4 Rd8 27. Qc6 Rc8 28. Qxc7 Rcxc7 29. g3 Ng6 30. Nxf5 Bf6 31. Nd6 Rb8 32. Nxe4 Be7 33. Bd4 Rc4 34. f5 Nf8 35. f6 gxf6 36. Nxf6 Bxf6 37. Rxf6 Kg8 38. Rdf1 Ng6 39. Rf7 b4 40. Rg7+ Kh8 41. Rb7+ 1-0

[Event "BOL-ch"]
[Site "Santa Cruz"]
[Date "2022.05.19"]
[Round "2"]
[White "Cueto Chajtur, Johny"]
[Black "Zambrana, Oswaldo"]
[Result "1/2-1/2"]
[ECO "B40"]
[WhiteElo "2203"]
[BlackElo "2428"]
[PlyCount "31"]
[EventDate "2022.05.18"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "BOL"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. c3 Nf6 4. Bd3 Nc6 5. Bc2 b6 6. 0-0 Bb7 7. Re1 Rc8 8. d3 Be7 9. Nbd2 d6 10. b3 0-0 11. Bb2 d5 12. e5 Nd7 13. d4 cxd4 14. cxd4 Nb4 15. Bb1 Qc7 16. Re3 1/2-1/2

[Event "BOL-ch"]
[Site "Santa Cruz"]
[Date "2022.05.19"]
[Round "3"]
[White "Zambrana, Oswaldo"]
[Black "Bolanos, Fernando"]
[Result "1-0"]
[ECO "B33"]
[WhiteElo "2428"]
[BlackElo "2249"]
[PlyCount "85"]
[EventDate "2022.05.18"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "BOL"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Ndb5 d6 7. Bf4 e5 8. Bg5 a6 9. Na3 b5 10. Nd5 Be7 11. Bxf6 Bxf6 12. c3 0-0 13. Nc2 Rb8 14. a4 bxa4 15. Ncb4 Nxb4 16. cxb4 Bb7 17. Rxa4 Bc6 18. Bxa6 Bxa4 19. Qxa4 Qe8 20. b5 Bd8 21. Qc4 Bb6 22. 0-0 Kh8 23. g3 Bd4 24. Qc6 Qd8 25. Kg2 f5 26. exf5 Rxf5 27. f3 Qa5 28. Qc2 Rbf8 29. Bc8 R5f7 30. Be6 Rb7 31. b6 Bxb6 32. b4 Qb5 33. Qe4 Bd4 34. Rc1 Ra7 35. h4 Ra2+ 36. Kh3 Re2 37. Qf5 Qe8 38. Bf7 Qa8 39. Nf6 g6 40. Bxg6 Qb7 41. Bxh7 Rxf6 42. Qxf6+ Kxh7 43. Qxd6 1-0

[Event "BOL-ch"]
[Site "Santa Cruz"]
[Date "2022.05.18"]
[Round "1"]
[White "Zambrana, Oswaldo"]
[Black "Mendoza, Rodrigo"]
[Result "1/2-1/2"]
[ECO "B19"]
[WhiteElo "2428"]
[BlackElo "2166"]
[PlyCount "80"]
[EventDate "2022.05.18"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "BOL"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. h4 h6 7. Nf3 Nd7 8. h5 Bh7 9. Bd3 Bxd3 10. Qxd3 e6 11. Bf4 Qa5+ 12. Bd2 Qc7 13. 0-0-0 Ngf6 14. Ne4 Be7 15. g3 0-0 16. Kb1 c5 17. Bf4 Qb6 18. Ne5 Nxe5 19. Nxf6+ Bxf6 20. dxe5 Be7 21. g4 Rfd8 22. Qg3 Rxd1+ 23. Rxd1 Rd8 24. Rg1 Rd7 25. g5 hxg5 26. Bxg5 Qd8 27. Bc1 Bf8 28. Qf3 Qc7 29. Bf4 Qc6 30. Qxc6 bxc6 31. c3 Kh7 32. Kc2 Be7 33. Rg4 Rd5 34. Bg3 Bd8 35. Ra4 Bb6 36. Rf4 Rxe5 37. Rxf7 Re2+ 38. Kc1 c4 39. Rf4 Kh6 40. Rg4 Bxf2 1/2-1/2

[Event "BOL-ch"]
[Site "Santa Cruz"]
[Date "2021.12.19"]
[Round "8"]
[White "Ticona Rocabado, Licael Roderick"]
[Black "Zambrana, Oswaldo"]
[Result "0-1"]
[ECO "A37"]
[WhiteElo "1915"]
[BlackElo "2438"]
[PlyCount "82"]
[EventDate "2021.12.15"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "BOL"]
[SourceTitle "CBM 205 Extra"]
[Source "ChessBase"]
[SourceDate "2022.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.01.31"]
[SourceQuality "1"]

1. Nf3 c5 2. g3 Nc6 3. Bg2 g6 4. 0-0 Bg7 5. e4 e5 6. d3 Nge7 7. c4 d6 8. Nc3 0-0 9. Be3 h6 10. a3 Nd4 11. Nd5 Nxf3+ 12. Bxf3 Nxd5 13. cxd5 a5 14. Bg2 Kh7 15. Qd2 f5 16. f4 exf4 17. Bxf4 Ra6 18. Be3 Rb6 19. Qxa5 Rxb2 20. Qxd8 Rxd8 21. Rab1 Re2 22. Bc1 Bd4+ 23. Kh1 b5 24. Bh3 fxe4 25. Bxc8 Rxc8 26. dxe4 Rb8 27. Bf4 Rb6 28. Rfe1 Rxe1+ 29. Rxe1 b4 30. axb4 cxb4 31. Rd1 b3 32. Rxd4 b2 33. Rd1 Ra6 34. Bxd6 Ra1 35. Rxa1 bxa1Q+ 36. Kg2 Qd4 37. Kf3 g5 38. g4 Qf6+ 39. Ke3 Qxd6 40. Kd4 Qxh2 41. e5 Qf4+ 0-1

[Event "BOL-ch"]
[Site "Santa Cruz"]
[Date "2021.12.19"]
[Round "9"]
[White "Zambrana, Oswaldo"]
[Black "Parraga, Alejandro"]
[Result "1-0"]
[ECO "C04"]
[WhiteElo "2438"]
[BlackElo "2133"]
[PlyCount "61"]
[EventDate "2021.12.15"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "BOL"]
[SourceTitle "CBM 205 Extra"]
[Source "ChessBase"]
[SourceDate "2022.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.01.31"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 Nc6 4. Ngf3 Nf6 5. e5 Nd7 6. Bb5 a6 7. Bxc6 bxc6 8. c4 dxc4 9. Nxc4 Bb4+ 10. Bd2 Bxd2+ 11. Qxd2 Nb6 12. Na5 0-0 13. 0-0 c5 14. dxc5 Qxd2 15. Nxd2 Nd7 16. Ndc4 Nxc5 17. b4 Nb7 18. Rac1 Nxa5 19. Nxa5 Bd7 20. Rxc7 Bb5 21. Rd1 Rad8 22. Rd6 Rc8 23. Rc5 Rxc5 24. bxc5 Rc8 25. c6 g5 26. f3 Kf8 27. Kf2 Ke7 28. Ke3 Rc7 29. Kd4 f6 30. Kc5 fxe5 31. Rd2 1-0

[Event "BOL-ch"]
[Site "Santa Cruz"]
[Date "2021.12.18"]
[Round "6"]
[White "Gemy Vargas, Jose Daniel"]
[Black "Zambrana, Oswaldo"]
[Result "0-1"]
[ECO "B33"]
[WhiteElo "2380"]
[BlackElo "2438"]
[PlyCount "128"]
[EventDate "2021.12.15"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "BOL"]
[SourceTitle "CBM 205 Extra"]
[Source "ChessBase"]
[SourceDate "2022.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.01.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Nd5 Nxd5 8. exd5 Nb8 9. a4 Be7 10. Bd2 a6 11. Na3 b6 12. a5 b5 13. c4 bxc4 14. Nxc4 Nd7 15. Bb4 0-0 16. Be2 Qc7 17. 0-0 Rb8 18. Qa4 Bb7 19. Rfd1 Rfd8 20. Rac1 Nc5 21. Qa3 Bg5 22. Rc2 Qe7 23. Bxc5 dxc5 24. Nb6 Qf8 25. Rxc5 Be7 26. b4 f5 27. Qc3 Bd6 28. Rc4 Qe8 29. Qb3 e4 30. f3 Qh5 31. g3 Qg5 32. fxe4 f4 33. Kg2 h5 34. Qf3 fxg3 35. Qxh5 Qe3 36. Qf3 Qh6 37. hxg3 Rf8 38. Qg4 Qe3 39. Bf3 Rf7 40. Rcd4 Rbf8 41. R4d3 Qh6 42. Rh1 Qf6 43. Nc4 Rc7 44. Nxd6 Rc2+ 45. Kh3 Qh6+ 46. Qh5 Qxd6 47. Bg4 Bc8 48. Bxc8 Rfxc8 49. Rf3 g6 50. e5 Qd7+ 51. Qg4 Qh7+ 52. Qh4 Qd7+ 53. e6 Qxd5 54. Qg4 R2c7 55. e7 Kg7 56. Re1 Rh8+ 57. Kg2 Qd2+ 58. Rf2 Rh2+ 59. Kxh2 Qxf2+ 60. Kh3 Qxe1 61. Qd4+ Kh7 62. Qh4+ Kg8 63. Qf6 Qh1+ 64. Kg4 Rc4+ 0-1

[Event "BOL-ch"]
[Site "Santa Cruz"]
[Date "2021.12.18"]
[Round "7"]
[White "Zambrana, Oswaldo"]
[Black "Martinez, Ariel A"]
[Result "1-0"]
[ECO "B79"]
[WhiteElo "2438"]
[BlackElo "2153"]
[PlyCount "45"]
[EventDate "2021.12.15"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "BOL"]
[SourceTitle "CBM 205 Extra"]
[Source "ChessBase"]
[SourceDate "2022.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.01.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. Bc4 0-0 8. Bb3 d6 9. f3 Bd7 10. Qd2 Qa5 11. 0-0-0 Rfc8 12. h4 h5 13. Kb1 Ne5 14. Bg5 Kf8 15. Rhe1 Nc6 16. Ndb5 Ne5 17. Nxd6 Rxc3 18. Nxb7 Rxb3 19. Nxa5 Rxb2+ 20. Kxb2 Nxe4 21. Bxe7+ Kg8 22. Qd4 Nf2 23. Rxe5 1-0

[Event "BOL-ch"]
[Site "Santa Cruz"]
[Date "2021.12.17"]
[Round "5"]
[White "Avila, Carlos Alejandro"]
[Black "Zambrana, Oswaldo"]
[Result "0-1"]
[ECO "B33"]
[WhiteElo "1967"]
[BlackElo "2438"]
[PlyCount "58"]
[EventDate "2021.12.15"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "BOL"]
[SourceTitle "CBM 205 Extra"]
[Source "ChessBase"]
[SourceDate "2022.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.01.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6 8. Na3 b5 9. Nd5 Be7 10. Bxf6 Bxf6 11. c3 Bg5 12. Nc2 Ne7 13. Nce3 Bxe3 14. Nxe3 Bb7 15. Qg4 0-0 16. Be2 d5 17. exd5 Nxd5 18. Nxd5 Qxd5 19. 0-0 Qd2 20. Bf3 f5 21. Qb4 Bxf3 22. gxf3 Qg5+ 23. Kh1 Qh5 24. Qb3+ Kh8 25. Qd5 Rad8 26. Qxe5 Qxf3+ 27. Kg1 Rf6 28. Rfe1 Rg6+ 29. Kf1 Qh3+ 0-1

[Event "BOL-ch"]
[Site "Santa Cruz"]
[Date "2021.12.17"]
[Round "4"]
[White "Zambrana, Oswaldo"]
[Black "Ramirez, Maria Eugenia"]
[Result "1-0"]
[ECO "C55"]
[WhiteElo "2438"]
[BlackElo "2072"]
[PlyCount "99"]
[EventDate "2021.12.15"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "BOL"]
[SourceTitle "CBM 205 Extra"]
[Source "ChessBase"]
[SourceDate "2022.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.01.31"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Be7 5. 0-0 0-0 6. Re1 d6 7. a4 Na5 8. Ba2 c5 9. Bg5 Nc6 10. h3 a6 11. Bxf6 Bxf6 12. Nc3 Nb4 13. Bc4 b6 14. Nd5 Nxd5 15. Bxd5 Rb8 16. c3 Qc7 17. b4 Be6 18. Qb3 Qd7 19. Reb1 Rfc8 20. b5 a5 21. Ra2 Bxd5 22. Qxd5 Qe6 23. Nd2 Be7 24. Nc4 Qxd5 25. exd5 f5 26. Re2 f4 27. Re4 Kf7 28. Rbe1 Rb7 29. g3 g5 30. Kg2 Ke8 31. gxf4 gxf4 32. Kf3 Kf7 33. Rg1 Rbb8 34. Ree1 Rd8 35. Rg4 Bf6 36. Ke4 Rb7 37. Reg1 Rbb8 38. h4 Ke7 39. h5 Rf8 40. h6 Rf7 41. Rg8 Rb7 42. f3 Kd7 43. Ra8 Kc7 44. Rgg8 Kd7 45. Rac8 Be7 46. Rc6 Bf8 47. Nxb6+ Ke8 48. Rxd6 Ke7 49. Re6+ Kd8 50. Nc4 1-0

[Event "BOL-ch"]
[Site "Santa Cruz"]
[Date "2021.12.16"]
[Round "3"]
[White "Vera Sanchez, Pavel Genaro"]
[Black "Zambrana, Oswaldo"]
[Result "1-0"]
[ECO "A65"]
[WhiteElo "2075"]
[BlackElo "2438"]
[PlyCount "135"]
[EventDate "2021.12.15"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "BOL"]
[SourceTitle "CBM 205 Extra"]
[Source "ChessBase"]
[SourceDate "2022.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.01.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 c5 4. d5 exd5 5. cxd5 d6 6. e4 g6 7. f3 Bg7 8. Nge2 0-0 9. Ng3 a6 10. a4 h5 11. Bg5 Nbd7 12. Be2 Qe8 13. Qd2 Rb8 14. 0-0 Nh7 15. Bh6 Qe7 16. Bxg7 Kxg7 17. Rae1 h4 18. Nh1 g5 19. g3 Kh8 20. Nf2 Ne5 21. gxh4 gxh4 22. f4 Ng6 23. e5 dxe5 24. Bd3 f5 25. fxe5 Nxe5 26. Kh1 Qd6 27. Qf4 Nf7 28. Qxh4 b5 29. Re3 b4 30. Rh3 Nfg5 31. Qxg5 bxc3 32. Rxh7+ Kxh7 33. Rg1 Qh6 34. Qe7+ Kh8 35. Qe5+ Qf6 36. Qxb8 cxb2 37. Rb1 Be6 38. Qxb2 Bxd5+ 39. Kg1 c4 40. Qxf6+ Rxf6 41. Bc2 Rg6+ 42. Kf1 Bg2+ 43. Ke2 Re6+ 44. Kd2 Bf3 45. Nd1 Re2+ 46. Kc3 f4 47. Rb8+ Kg7 48. Rc8 Bd5 49. Rc5 Be6 50. Rg5+ Kf6 51. Rg6+ Ke5 52. Rg5+ Kf6 53. Rg1 Bh3 54. Rg6+ Kf7 55. Rxa6 f3 56. Rh6 Be6 57. Rh4 Bd5 58. Rf4+ Ke6 59. h4 Ke5 60. Rf8 Kd6 61. h5 Rh2 62. Ne3 Bc6 63. Rf6+ Kc7 64. h6 f2 65. h7 Bxa4 66. Rxf2 Rh3 67. Bxa4 Rxh7 68. Nxc4 1-0

[Event "BOL-ch"]
[Site "Santa Cruz"]
[Date "2021.12.16"]
[Round "2"]
[White "Zambrana, Oswaldo"]
[Black "Titichoca Daza, Daniel Henry"]
[Result "0-1"]
[ECO "B94"]
[WhiteElo "2438"]
[BlackElo "2112"]
[PlyCount "106"]
[EventDate "2021.12.15"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "BOL"]
[SourceTitle "CBM 205 Extra"]
[Source "ChessBase"]
[SourceDate "2022.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.01.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 Nbd7 7. Qe2 h6 8. Bh4 g6 9. 0-0-0 e5 10. Nb3 Be7 11. f3 b5 12. a3 Bb7 13. Be1 Rc8 14. g4 Kf8 15. h4 Kg7 16. Kb1 Nb6 17. Bh3 Nc4 18. h5 g5 19. Nd5 Bxd5 20. exd5 Qc7 21. Qd3 a5 22. Nc1 Nxd5 23. Qxd5 Nxb2 24. Rh2 Nc4 25. Rd3 b4 26. axb4 axb4 27. Bxb4 Rb8 28. Rb3 Rhc8 29. Bf1 Rxb4 30. Rxb4 Na3+ 31. Ka2 Nxc2 32. Ra4 Ne3 33. Qb3 Nxf1 34. Rb2 Qxc1 35. Ra7 Nd2 36. Qd3 Qc5 37. Rbb7 Qc2+ 38. Qxc2 Rxc2+ 39. Ka1 Rc3 40. Rxe7 Rxf3 41. Re6 Rf6 42. Re8 Ne4 43. Raa8 Rf1+ 44. Kb2 Nf6 45. Red8 d5 46. Rd6 d4 47. Ra5 Nxg4 48. Kc2 Rf3 49. Ra7 Nf6 50. Re6 d3+ 51. Kb2 d2 52. Rd6 Ne4 53. Rad7 Rf1 0-1

[Event "BOL-ch"]
[Site "Santa Cruz"]
[Date "2021.12.15"]
[Round "1"]
[White "Cueto Chajtur, Johny"]
[Black "Zambrana, Oswaldo"]
[Result "1/2-1/2"]
[ECO "D00"]
[WhiteElo "2241"]
[BlackElo "2438"]
[PlyCount "19"]
[EventDate "2021.12.15"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "BOL"]
[SourceTitle "CBM 205 Extra"]
[Source "ChessBase"]
[SourceDate "2022.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.01.31"]
[SourceQuality "1"]

1. d4 Nf6 2. Bg5 d5 3. Nd2 Nbd7 4. e3 c6 5. Ngf3 e6 6. Ne5 Qb6 7. Rb1 Nxe5 8. dxe5 Nd7 9. Bf4 g6 10. b4 1/2-1/2

[Event "Online Olym Div2 E"]
[Site "Chess.com INT"]
[Date "2021.09.04"]
[Round "7.1"]
[White "Zambrana, Oswaldo"]
[Black "Arenas Vanegas, David"]
[Result "1-0"]
[ECO "C54"]
[WhiteElo "2438"]
[BlackElo "2455"]
[PlyCount "121"]
[EventDate "2021.09.02"]
[EventType "team (rapid)"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "CBM 204 Extra"]
[Source "ChessBase"]
[SourceDate "2021.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.11.30"]
[SourceQuality "1"]
[WhiteTeam "Bolivia"]
[BlackTeam "Colombia"]
[WhiteTeamCountry "BOL"]
[BlackTeamCountry "COL"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Bc5 5. 0-0 d6 6. c3 a5 7. a4 Bb6 8. Na3 0-0 9. Bb3 Ne7 10. Nc4 Bc5 11. Nh4 Bg4 12. Qe1 Ng6 13. Nxg6 hxg6 14. Be3 Bxe3 15. Nxe3 Bd7 16. f4 exf4 17. Rxf4 Qe7 18. Qh4 Be6 19. Bxe6 Qxe6 20. Raf1 Nh7 21. Nd5 g5 22. Qf2 gxf4 23. Nxc7 Qe5 24. Nxa8 Rxa8 25. Qxf4 Qxf4 26. Rxf4 g6 27. Kf2 Kf8 28. Ke3 Ke7 29. Kd4 Rc8 30. Rf1 Ng5 31. Rb1 Ne6+ 32. Ke3 Nc5 33. b3 Ne6 34. Kd2 Rh8 35. h3 Rh5 36. b4 Kd7 37. bxa5 Kc7 38. Rb5 Rh8 39. d4 Nf4 40. g3 Nxh3 41. e5 dxe5 42. Rxe5 Kd6 43. Rb5 Kc6 44. c4 Rh5 45. Ke3 Ng5 46. Rb6+ Kc7 47. Rf6 Rh1 48. d5 Rh7 49. c5 Rg7 50. a6 bxa6 51. Rxa6 Rg8 52. Ra7+ Kb8 53. Re7 Rf8 54. c6 Rc8 55. a5 Rc7 56. Rd7 f6 57. Rd6 Re7+ 58. Kd4 Nf3+ 59. Kc5 Rf7 60. Rd8+ Kc7 61. Rg8 1-0

[Event "Online Olym Div2 E"]
[Site "Chess.com INT"]
[Date "2021.09.04"]
[Round "8.5"]
[White "Zambrana, Oswaldo"]
[Black "Christie, Joshua"]
[Result "1-0"]
[ECO "C06"]
[WhiteElo "2438"]
[BlackElo "2206"]
[PlyCount "127"]
[EventDate "2021.09.02"]
[EventType "team (rapid)"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "CBM 204 Extra"]
[Source "ChessBase"]
[SourceDate "2021.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.11.30"]
[SourceQuality "1"]
[WhiteTeam "Bolivia"]
[BlackTeam "Jamaica"]
[WhiteTeamCountry "BOL"]
[BlackTeamCountry "JAM"]

1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. c3 c5 6. Bd3 Nc6 7. Ne2 cxd4 8. cxd4 f6 9. exf6 Nxf6 10. Nf3 Bd6 11. 0-0 Qc7 12. Bg5 0-0 13. Bh4 Nh5 14. Qc2 h6 15. Bh7+ Kh8 16. Bg6 Nf4 17. Nxf4 Bxf4 18. Bg3 Bd7 19. Rfd1 Qb6 20. Qe2 Rf6 21. Bb1 Bxg3 22. hxg3 Raf8 23. Qd3 g6 24. b3 Be8 25. a3 Qc7 26. Ra2 g5 27. Qe3 Bg6 28. Bxg6 Rxg6 29. Rc2 Qg7 30. Rdc1 Rgf6 31. b4 a6 32. Ne5 Nxe5 33. Qxe5 Rg6 34. Rc8 Rgf6 35. R1c7 Rxc8 36. Rxc8+ Kh7 37. a4 Rf8 38. Rxf8 Qxf8 39. Qxe6 Qxb4 40. Qxd5 b5 41. axb5 axb5 42. Qf7+ Kh8 43. d5 Qd6 44. Qe8+ Kg7 45. Qxb5 Kf6 46. Qb2+ Kf5 47. Qd4 h5 48. Qd3+ Ke5 49. Qe3+ Kf5 50. Qf3+ Kg6 51. Qe4+ Kf6 52. Kh1 Qb6 53. Qf3+ Kg6 54. Qd3+ Kf6 55. d6 Ke6 56. Qg6+ Kd7 57. Qxg5 Qxf2 58. Qe7+ Kc6 59. Qc7+ Kb5 60. d7 h4 61. d8Q h3 62. Qdb8+ Ka6 63. Qcb7+ Ka5 64. Qb5# 1-0

[Event "Online Olym Div2 E"]
[Site "Chess.com INT"]
[Date "2021.09.02"]
[Round "2.3"]
[White "Salinas Herrera, Pablo Patricio"]
[Black "Zambrana, Oswaldo"]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "2509"]
[BlackElo "2438"]
[PlyCount "96"]
[EventDate "2021.09.02"]
[EventType "team (rapid)"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "CBM 204 Extra"]
[Source "ChessBase"]
[SourceDate "2021.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.11.30"]
[SourceQuality "1"]
[WhiteTeam "Chile"]
[BlackTeam "Bolivia"]
[WhiteTeamCountry "CHI"]
[BlackTeamCountry "BOL"]

1. d4 Nf6 2. Nf3 e6 3. Bf4 d5 4. e3 Bd6 5. Nbd2 0-0 6. Bd3 c5 7. c3 Qc7 8. Bxd6 Qxd6 9. Ne5 Nc6 10. f4 b6 11. g4 Bb7 12. g5 Nd7 13. Qh5 g6 14. Qg4 cxd4 15. exd4 Ndxe5 16. fxe5 Nxe5 17. dxe5 Qxe5+ 18. Kd1 Qc7 19. Qg3 e5 20. Re1 Rae8 21. Nf3 d4 22. Nxd4 Re7 23. Nb5 Qd8 24. Kc2 a6 25. Na3 e4 26. Be2 b5 27. Rad1 Qb6 28. Qd6 Qc7 29. Qxc7 Rxc7 30. Bf1 h6 31. Bg2 Re8 32. gxh6 Kh7 33. Rd6 f5 34. h4 Kxh6 35. Bh3 Re5 36. Rg1 Rg7 37. Kd2 f4 38. Bg4 Kh7 39. Nc2 Bd5 40. Nd4 e3+ 41. Ke1 Bxa2 42. h5 Bb1 43. hxg6+ Rxg6 44. Rd7+ Kg8 45. Ke2 Kf8 46. Nf3 Re7 47. Rd4 Rf7 48. Ne5 Rh6 1-0

[Event "Online Olym Div2 E"]
[Site "Chess.com INT"]
[Date "2021.09.02"]
[Round "3.3"]
[White "Zambrana, Oswaldo"]
[Black "Albornoz Cabrera, Carlos Daniel"]
[Result "1-0"]
[ECO "B94"]
[WhiteElo "2438"]
[BlackElo "2567"]
[PlyCount "77"]
[EventDate "2021.09.02"]
[EventType "team (rapid)"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "CBM 204 Extra"]
[Source "ChessBase"]
[SourceDate "2021.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.11.30"]
[SourceQuality "1"]
[WhiteTeam "Bolivia"]
[BlackTeam "Cuba"]
[WhiteTeamCountry "BOL"]
[BlackTeamCountry "CUB"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 Nbd7 7. f4 Qc7 8. Qe2 e5 9. fxe5 dxe5 10. Nf5 h6 11. Bxf6 Nxf6 12. 0-0-0 Be6 13. Qf3 Rc8 14. Bd3 g6 15. Nd4 Be7 16. Nxe6 fxe6 17. Qh3 Kf7 18. Rhf1 Qb6 19. Ne2 Kg7 20. g4 Rhf8 21. Qg3 Nd7 22. Rxf8 Rxf8 23. Bc4 Bg5+ 24. Kb1 Nc5 25. Nc3 Bf4 26. Qg1 Qc7 27. Bb3 b5 28. a3 Rb8 29. h4 a5 30. Qf1 b4 31. Nb5 Qe7 32. axb4 Nxb3 33. cxb3 Qxb4 34. Rd7+ Kh8 35. Qc4 Qxb5 36. Rd8+ Kg7 37. Qc7+ Kf6 38. Rxb8 Qd3+ 39. Ka2 1-0

[Event "Online Olym Div2 E"]
[Site "Chess.com INT"]
[Date "2021.09.02"]
[Round "1.4"]
[White "Zambrana, Oswaldo"]
[Black "Mieles Palau, Daniel Alberto"]
[Result "0-1"]
[ECO "B33"]
[WhiteElo "2438"]
[BlackElo "2364"]
[PlyCount "120"]
[EventDate "2021.09.02"]
[EventType "team (rapid)"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "CBM 204 Extra"]
[Source "ChessBase"]
[SourceDate "2021.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.11.30"]
[SourceQuality "1"]
[WhiteTeam "Bolivia"]
[BlackTeam "Ecuador"]
[WhiteTeamCountry "BOL"]
[BlackTeamCountry "ECU"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6 8. Na3 b5 9. Nd5 Be7 10. Bxf6 Bxf6 11. c4 b4 12. Nc2 a5 13. g3 Bg5 14. Bg2 0-0 15. 0-0 Be6 16. h4 Bh6 17. Qd3 Rb8 18. Rfd1 Qd7 19. b3 Qa7 20. a3 bxa3 21. Nxa3 Qc5 22. Nb5 Rfd8 23. Ra4 Rd7 24. Ndc7 Nb4 25. Rxb4 axb4 26. Na6 Qb6 27. Nxb8 Qxb8 28. Ra1 g6 29. Ra4 Bf8 30. Kh2 h5 31. Bh3 Qb6 32. Qe2 Kg7 33. Bxe6 fxe6 34. Kg2 Rf7 35. Ra8 Qc6 36. Ra4 Kh7 37. Qd3 Rd7 38. Qf3 Kg7 39. Ra7 Rxa7 40. Nxa7 Qc5 41. Nb5 Be7 42. Qd3 Kf7 43. f3 Ke8 44. Qe2 Kd7 45. Qd3 Bd8 46. Qe2 Bb6 47. Kh3 Qg1 48. Qg2 Qd1 49. g4 hxg4+ 50. Kxg4 Qxb3 51. Qd2 Bc5 52. Nxd6 Qc3 53. Qd1 Bxd6 54. Qa4+ Ke7 55. Qa7+ Kf6 56. Qd7 Be7 57. Qe8 Qc1 58. Qh8+ Kf7 59. Qh7+ Ke8 60. Qxg6+ Kd7 0-1

[Event "Online Olym Div3 D"]
[Site "Chess.com INT"]
[Date "2021.08.29"]
[Round "9.3"]
[White "Zambrana, Oswaldo"]
[Black "Kamwendo, Precious"]
[Result "1-0"]
[ECO "B96"]
[WhiteElo "2438"]
[BlackElo "1934"]
[PlyCount "87"]
[EventDate "2021.08.27"]
[EventType "team-tourn (rapid)"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "CBM 204 Extra"]
[Source "ChessBase"]
[SourceDate "2021.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.11.30"]
[SourceQuality "1"]
[WhiteTeam "Bolivia"]
[BlackTeam "Malawi"]
[WhiteTeamCountry "BOL"]
[BlackTeamCountry "MWI"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. Qe2 Nbd7 8. 0-0-0 Qc7 9. f4 Be7 10. Nf3 e5 11. fxe5 dxe5 12. Qc4 Qxc4 13. Bxc4 0-0 14. Bxf6 Bxf6 15. Nd5 b5 16. Bb3 Rb8 17. Nxf6+ gxf6 18. Rd6 Kg7 19. Rf1 Rb6 20. Rfd1 Rxd6 21. Rxd6 Nc5 22. Bd5 Be6 23. b4 Bxd5 24. exd5 Ne4 25. Rxa6 Rd8 26. Nh4 Kh6 27. a4 bxa4 28. Rxa4 Rxd5 29. Nf5+ Kg5 30. Ng3 Nd6 31. Ra5 Rd4 32. c3 Rc4 33. Kc2 Rc8 34. Rd5 Nc4 35. Kb3 Ne3 36. Rd7 Nxg2 37. Ne4+ Kf4 38. Nxf6 Ne3 39. Rxf7 Kg5 40. Ne4+ Kg6 41. Rf6+ Kg7 42. Re6 Ng4 43. h3 Ne3 44. Rxe5 1-0

[Event "Online Olym Div3 D"]
[Site "Chess.com INT"]
[Date "2021.08.29"]
[Round "7.4"]
[White "Zambrana, Oswaldo"]
[Black "Vazquez, Guillermo"]
[Result "1/2-1/2"]
[ECO "C55"]
[WhiteElo "2438"]
[BlackElo "2527"]
[PlyCount "118"]
[EventDate "2021.08.27"]
[EventType "team-tourn (rapid)"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "CBM 204 Extra"]
[Source "ChessBase"]
[SourceDate "2021.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.11.30"]
[SourceQuality "1"]
[WhiteTeam "Bolivia"]
[BlackTeam "Paraguay"]
[WhiteTeamCountry "BOL"]
[BlackTeamCountry "PAR"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 h6 5. 0-0 d6 6. a4 g6 7. h3 Bg7 8. Re1 0-0 9. Nc3 Nb4 10. Bb3 c5 11. Na2 Nc6 12. Nc3 Nb4 13. Na2 Nc6 14. Nc3 Be6 15. Nd5 Bxd5 16. exd5 Nb4 17. c3 Nbxd5 18. d4 exd4 19. cxd4 Rc8 20. dxc5 dxc5 21. Ne5 Rc7 22. f4 Qd6 23. Qf3 Rd8 24. Rd1 Qe6 25. Bc4 Rd6 26. Ra3 Rc8 27. Rad3 Rcd8 28. Be3 b6 29. Bf2 a6 30. Ba2 Bf8 31. Bh4 g5 32. fxg5 hxg5 33. Ng4 gxh4 34. Bxd5 Nxd5 35. Rxd5 Rxd5 36. Rxd5 Qe1+ 37. Qf1 Qxf1+ 38. Kxf1 Rd6 39. Rxd6 Bxd6 40. Nf6+ Kh8 41. Nd5 b5 42. Nc3 Be5 43. axb5 axb5 44. Nxb5 Bxb2 45. Nd6 Kg8 46. Ke2 Be5 47. Nc4 Bd4 48. Kf3 Kg7 49. Kg4 Kf6 50. Kxh4 Ke6 51. Nb6 Kf5 52. g4+ Kf4 53. Kh5 Bf2 54. h4 Be1 55. g5 Kf5 56. Nc4 Bg3 57. Nb6 Be1 58. Nc4 Bg3 59. Nb6 Be1 1/2-1/2

[Event "Online Olym Div3 D"]
[Site "Chess.com INT"]
[Date "2021.08.28"]
[Round "6.2"]
[White "Harper, Ryan"]
[Black "Zambrana, Oswaldo"]
[Result "0-1"]
[ECO "B33"]
[WhiteElo "2184"]
[BlackElo "2438"]
[PlyCount "140"]
[EventDate "2021.08.27"]
[EventType "team-tourn (rapid)"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "CBM 204 Extra"]
[Source "ChessBase"]
[SourceDate "2021.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.11.30"]
[SourceQuality "1"]
[WhiteTeam "Trinidad and Tobago"]
[BlackTeam "Bolivia"]
[WhiteTeamCountry "TRI"]
[BlackTeamCountry "BOL"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6 8. Bxf6 gxf6 9. Na3 b5 10. Nd5 f5 11. c3 Bg7 12. exf5 Bxf5 13. Nc2 Be6 14. Nce3 Ne7 15. a4 Nxd5 16. Nxd5 0-0 17. g3 bxa4 18. Rxa4 a5 19. Bg2 Rb8 20. b3 f5 21. 0-0 Kh8 22. c4 e4 23. Nf4 Bf7 24. Qc2 Qb6 25. Ra3 Be5 26. Rd1 Qb4 27. Qa2 a4 28. Rxa4 Qxb3 29. Qxb3 Rxb3 30. Nd5 Rfb8 31. h3 Rb1 32. Rxb1 Rxb1+ 33. Kh2 Rb2 34. Ra8+ Kg7 35. Ne7 Rxf2 36. Ra7 h5 37. h4 Kf6 38. Nc6 Bxc4 39. Nxe5 Kxe5 40. Rh7 Bf1 41. Kg1 Rxg2+ 42. Kxf1 Rxg3 43. Rxh5 d5 44. Rh8 d4 45. h5 d3 46. h6 e3 47. h7 e2+ 48. Kf2 Kf4 49. Re8 Rf3+ 50. Ke1 Rf1+ 51. Kd2 Rd1+ 52. Kc3 Rh1 53. Kxd3 Rxh7 54. Kxe2 Rh2+ 55. Kf1 Kf3 56. Kg1 Rg2+ 57. Kh1 f4 58. Ra8 Re2 59. Rb8 Kg3 60. Rg8+ Kf2 61. Rb8 Re1+ 62. Kh2 Re6 63. Rb2+ Re2 64. Rb8 Kf1+ 65. Kh1 f3 66. Ra8 Rd2 67. Rb8 f2 68. Kh2 Ke1 69. Rb1+ Rd1 70. Rxd1+ Kxd1 0-1

[Event "Online Olym Div3 D"]
[Site "Chess.com INT"]
[Date "2021.08.27"]
[Round "1.4"]
[White "Germinal, Kemly"]
[Black "Zambrana, Oswaldo"]
[Result "0-1"]
[ECO "B23"]
[WhiteElo "1997"]
[BlackElo "2438"]
[PlyCount "56"]
[EventDate "2021.08.27"]
[EventType "team-tourn (rapid)"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "CBM 204 Extra"]
[Source "ChessBase"]
[SourceDate "2021.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.11.30"]
[SourceQuality "1"]
[WhiteTeam "Haiti"]
[BlackTeam "Bolivia"]
[WhiteTeamCountry "HAI"]
[BlackTeamCountry "BOL"]

1. e4 c5 2. Nc3 Nc6 3. Bb5 Na5 4. f4 a6 5. Be2 Nc6 6. Nf3 g6 7. 0-0 Bg7 8. d3 b5 9. a3 d6 10. Qe1 e6 11. Be3 Nd4 12. Bd1 Ne7 13. e5 Nef5 14. Bxd4 cxd4 15. Ne4 dxe5 16. fxe5 0-0 17. Qf2 Bb7 18. Re1 h5 19. g3 Rc8 20. h3 Ne3 21. Nd6 Bxf3 22. Qxf3 Rc5 23. Ne4 Rxe5 24. h4 Rf5 25. Qe2 Qc7 26. c3 Rd8 27. Rc1 Ng4 28. cxd4 Qxc1 0-1

[Event "Online Olym Div3 D"]
[Site "Chess.com INT"]
[Date "2021.08.27"]
[Round "2.2"]
[White "Zambrana, Oswaldo"]
[Black "Rodriguez Vila, Andres"]
[Result "1/2-1/2"]
[ECO "C07"]
[WhiteElo "2438"]
[BlackElo "2484"]
[PlyCount "54"]
[EventDate "2021.08.27"]
[EventType "team-tourn (rapid)"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "CBM 204 Extra"]
[Source "ChessBase"]
[SourceDate "2021.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.11.30"]
[SourceQuality "1"]
[WhiteTeam "Bolivia"]
[BlackTeam "Uruguay"]
[WhiteTeamCountry "BOL"]
[BlackTeamCountry "URU"]

1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 cxd4 5. exd5 Qxd5 6. Bc4 Qd7 7. 0-0 Nc6 8. Nb3 a6 9. Nbxd4 Nxd4 10. Nxd4 Qc7 11. Bb3 Bd6 12. Kh1 Bd7 13. Qf3 Ne7 14. Bg5 0-0 15. Rad1 e5 16. Bxe7 Bxe7 17. Nf5 Bxf5 18. Qxf5 g6 19. Rd7 Qc6 20. Qh3 Rae8 21. Rfd1 Rd8 22. c3 Rxd7 23. Qxd7 Bc5 24. Qxc6 bxc6 25. Kg1 Re8 26. Ba4 Re6 27. Kf1 Rf6 1/2-1/2

[Event "FIDE World Cup American Qual Gp8"]
[Site "Tornelo INT"]
[Date "2021.05.25"]
[Round "2.2"]
[White "Zambrana, Oswaldo"]
[Black "Salinas Herrera, Pablo Patricio"]
[Result "0-1"]
[ECO "C54"]
[WhiteElo "2438"]
[BlackElo "2514"]
[PlyCount "34"]
[EventDate "2021.05.22"]
[EventType "k.o. (rapid)"]
[EventRounds "4"]
[EventCountry "USA"]
[SourceTitle "CBM 202 Extra"]
[Source "ChessBase"]
[SourceDate "2021.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2021.07.31"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. 0-0 Nf6 5. d3 0-0 6. c3 d6 7. a4 a5 8. Re1 Ng4 9. Re2 Kh8 10. h3 f5 11. hxg4 fxg4 12. Ng5 g3 13. Rc2 Bxf2+ 14. Kh1 Qe8 15. Nd2 Rf4 16. Nf1 Rh4+ 17. Nh3 Bg4 0-1

[Event "FIDE World Cup American Qual Gp8"]
[Site "Tornelo INT"]
[Date "2021.05.24"]
[Round "2.1"]
[White "Salinas Herrera, Pablo Patricio"]
[Black "Zambrana, Oswaldo"]
[Result "1-0"]
[ECO "A67"]
[WhiteElo "2514"]
[BlackElo "2438"]
[PlyCount "55"]
[EventDate "2021.05.22"]
[EventType "k.o. (rapid)"]
[EventRounds "4"]
[EventCountry "USA"]
[SourceTitle "CBM 202 Extra"]
[Source "ChessBase"]
[SourceDate "2021.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2021.07.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 c5 4. d5 exd5 5. cxd5 d6 6. e4 g6 7. f4 Bg7 8. Bb5+ Nfd7 9. Bd3 0-0 10. Nf3 a6 11. a4 Qc7 12. 0-0 c4 13. Bc2 Nc5 14. h3 Nbd7 15. Be3 Rb8 16. Bd4 b5 17. Bxg7 Kxg7 18. Nd4 bxa4 19. Nc6 Rxb2 20. Nxa4 Nxa4 21. Rxa4 Qb6+ 22. Kh1 Nf6 23. Rxc4 a5 24. Rc3 Ba6 25. Rff3 Nxe4 26. Bxe4 Be2 27. Qa1 Rb1+ 28. Qxb1 1-0

