[Event "Sabaneta op-B 2nd"]
[Site "Sabaneta Antioquia"]
[Date "2023.07.03"]
[Round "8"]
[White "Robledo, Andres Mauricio"]
[Black "Viera, Jeffren"]
[Result "0-1"]
[ECO "E32"]
[WhiteElo "1930"]
[BlackElo "1872"]
[PlyCount "88"]
[EventDate "2023.06.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. Qc2 Bb7 5. Nc3 Bb4 6. a3 Bxc3+ 7. Qxc3 Ne4 8. Qc2 0-0 9. e3 d6 10. Be2 Nd7 11. 0-0 f5 12. Nd2 Qg5 13. f4 Qh4 14. Nf3 Qh6 15. d5 exd5 16. cxd5 Rac8 17. Bb5 Ndf6 18. Bc6 Bxc6 19. Qxc6 Ng4 20. h3 Ngf6 21. b4 Ng3 22. Re1 Nfe4 23. Bb2 Qg6 24. Rac1 Qf7 25. Nd4 Rfe8 26. Nb5 Re7 27. Nxa7 Rce8 28. Rcd1 g5 29. Qc4 c5 30. Nc6 Rc7 31. bxc5 bxc5 32. Qc2 g4 33. Ba1 gxh3 34. gxh3 h5 35. Kh2 h4 36. Rg1 Kh7 37. Rg2 Qh5 38. Re1 Rg8 39. Nd4 Rcg7 40. Rgg1 cxd4 41. Bxd4 Rg6 42. Qc7+ Kh6 43. Qe7 Nd2 44. Ra1 Nc4 0-1

[Event "Sabaneta op-B 2nd"]
[Site "Sabaneta Antioquia"]
[Date "2023.07.03"]
[Round "9"]
[White "Viera, Jeffren"]
[Black "Alvarez, Juan P"]
[Result "0-1"]
[ECO "B72"]
[WhiteElo "1872"]
[BlackElo "1952"]
[PlyCount "64"]
[EventDate "2023.06.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[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 g6 6. Be3 Bg7 7. Qd2 Ng4 8. 0-0-0 Nxe3 9. Qxe3 Nc6 10. Nxc6 bxc6 11. Bc4 0-0 12. f4 Qa5 13. Rd3 Rb8 14. f5 d5 15. exd5 Bxf5 16. Rd2 Rb4 17. Bb3 c5 18. a3 c4 19. Ba2 Rxb2 20. Kxb2 Rb8+ 21. Bb3 cxb3 22. cxb3 Qb5 23. b4 Qc4 24. Rc1 Rc8 25. Rf2 Qxd5 26. Qd2 Qe4 27. Rf3 a5 28. Re3 axb4 29. Rxe4 bxc3+ 30. Rxc3 Bxc3+ 31. Qxc3 Rxc3 32. Rxe7 Rc2+ 0-1

[Event "Sabaneta op-B 2nd"]
[Site "Sabaneta Antioquia"]
[Date "2023.06.30"]
[Round "4"]
[White "Alzate Velez, Valentin"]
[Black "Viera, Jeffren"]
[Result "0-1"]
[ECO "E32"]
[WhiteElo "1472"]
[BlackElo "1872"]
[PlyCount "73"]
[EventDate "2023.06.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 b6 5. Bg5 Bb7 6. e3 h6 7. Bh4 g5 8. Bg3 Ne4 9. Nge2 Qf6 10. f3 Bxc3+ 11. bxc3 Nxg3 12. Nxg3 h5 13. Ne4 Qg6 14. Bd3 f5 15. Nf2 g4 16. e4 gxf3 17. gxf3 Qg2 18. Rf1 Nc6 19. 0-0-0 0-0-0 20. exf5 exf5 21. Bxf5 Qxh2 22. Be4 Ba6 23. Bxc6 dxc6 24. Qa4 Qf4+ 25. Kb2 Kb7 26. Nd3 Qf7 27. Ne5 Qf6 28. Rb1 c5 29. dxc5 Qxe5 30. c6+ Ka8 31. Qxa6 Rd2+ 32. Kb3 Rb8 33. Rfe1 Qf5 34. Kb4 Qc5+ 35. Kb3 b5 36. cxb5 Rxb5+ 37. Qxb5 0-1

[Event "Sabaneta op-B 2nd"]
[Site "Sabaneta Antioquia"]
[Date "2023.06.30"]
[Round "5"]
[White "Viera, Jeffren"]
[Black "Correal Gomez, Juana Fernanda"]
[Result "1-0"]
[ECO "B30"]
[WhiteElo "1872"]
[BlackElo "1630"]
[PlyCount "118"]
[EventDate "2023.06.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[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 e6 4. Bxc6 bxc6 5. b3 d6 6. Bb2 e5 7. Qe2 Be7 8. d3 Bf6 9. Nbd2 Ne7 10. 0-0-0 a5 11. a4 0-0 12. h4 Bg4 13. Nc4 Ng6 14. g3 Bxh4 15. Rxh4 Nxh4 16. gxh4 Qf6 17. Ncd2 Qf4 18. Qe3 Qxe3 19. fxe3 Rfe8 20. Rg1 Bxf3 21. Nxf3 Re6 22. Bc3 Rf6 23. Nd2 Rh6 24. Rg4 Rf6 25. Nc4 Re6 26. Nxa5 Ra6 27. Nc4 f6 28. d4 d5 29. exd5 cxd5 30. Na3 h5 31. Rg2 cxd4 32. exd4 e4 33. Nb5 Re7 34. Bb4 Rb7 35. Bd2 Rc6 36. Bf4 Rd7 37. c3 Re7 38. Kd2 Kf7 39. a5 Ke6 40. b4 Kf5 41. Ke3 Rd7 42. Ra2 g5 43. Bh2 Ra6 44. Nc7 Rc6 45. Nb5 Ra6 46. Ra3 Kg4 47. hxg5 fxg5 48. Nc7 Ra7 49. a6 Kh3 50. Be5 g4 51. b5 g3 52. b6 g2 53. Ra1 Rdxc7 54. Bxc7 Rxa6 55. Rb1 Ra3 56. b7 g1Q+ 57. Rxg1 Rb3 58. b8Q Rxb8 59. Bxb8 h4 1-0

[Event "Sabaneta op-B 2nd"]
[Site "Sabaneta Antioquia"]
[Date "2023.06.29"]
[Round "3"]
[White "Viera, Jeffren"]
[Black "Betancur Alvarez, Sara Maria"]
[Result "1-0"]
[ECO "B07"]
[WhiteElo "1872"]
[BlackElo "1314"]
[PlyCount "53"]
[EventDate "2023.06.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 g6 2. d4 d6 3. Nc3 c6 4. Be3 Bg7 5. Bd3 Nf6 6. f3 b5 7. Qd2 a5 8. Bh6 0-0 9. g4 e5 10. dxe5 dxe5 11. h4 b4 12. Na4 Re8 13. h5 Bh8 14. 0-0-0 Ba6 15. hxg6 fxg6 16. Bc4+ Nd5 17. Bxa6 Nxa6 18. exd5 cxd5 19. Qxd5+ Qxd5 20. Rxd5 Nc7 21. Rd7 Ne6 22. Ne2 Rac8 23. Be3 Nf8 24. Ra7 e4 25. f4 Rc6 26. Rxa5 Rec8 27. Rc5 1-0

[Event "Pereira Risaraldense Cup-C"]
[Site "Pereira"]
[Date "2021.01.24"]
[Round "9"]
[White "Abreu, Thaisa Santoth"]
[Black "Viera, Jeffren"]
[Result "1-0"]
[ECO "B40"]
[BlackElo "1969"]
[PlyCount "75"]
[EventDate "2021.01.20"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 200 Extra"]
[Source "ChessBase"]
[SourceDate "2021.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2021.03.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. Nc3 a6 4. d4 cxd4 5. Qxd4 Nc6 6. Qd3 b5 7. Be3 Bb4 8. Be2 Nf6 9. 0-0 Qc7 10. a3 Be7 11. g3 Bb7 12. Bf4 d6 13. Rfd1 Rd8 14. h3 h6 15. Bf1 g5 16. Bc1 g4 17. hxg4 Nxg4 18. Qe2 h5 19. Bh3 Bf6 20. Bg5 Bxg5 21. Nxg5 Nce5 22. Rd4 Ke7 23. Rad1 Rhg8 24. f4 Qc5 25. Kg2 Nc4 26. Bxg4 hxg4 27. b3 Nb2 28. Nd5+ Bxd5 29. exd5 Rxg5 30. fxg5 Nxd1 31. Rxd1 e5 32. Rd2 Qc3 33. Rd3 Qa1 34. Qf2 Rc8 35. Qf6+ Ke8 36. Rd2 Qxa3 37. Rf2 Rc7 38. g6 1-0

[Event "Pereira Risaraldense Cup-C"]
[Site "Pereira"]
[Date "2021.01.24"]
[Round "8"]
[White "Viera, Jeffren"]
[Black "Soto Ramirez, Andres Camilo"]
[Result "1-0"]
[ECO "C50"]
[WhiteElo "1969"]
[BlackElo "1195"]
[PlyCount "57"]
[EventDate "2021.01.20"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 200 Extra"]
[Source "ChessBase"]
[SourceDate "2021.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2021.03.31"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Bc5 5. Bg5 d6 6. h3 Be6 7. Nbd2 h6 8. Bh4 g5 9. Bg3 Qe7 10. c3 Nh5 11. Qb3 Bd7 12. Bd5 Na5 13. Qc2 c6 14. Bxf7+ Qxf7 15. b4 Nxg3 16. fxg3 Bb6 17. Rb1 Rf8 18. bxa5 Bxa5 19. Rxb7 d5 20. exd5 cxd5 21. Nxe5 Qf2+ 22. Kd1 Bxc3 23. Nxd7 Rf7 24. Re1+ Re7 25. Rxe7+ Kxe7 26. Qxc3 Rd8 27. Qg7+ Kd6 28. Qe5+ Kc6 29. Qc7# 1-0

[Event "Pereira Risaraldense Cup-C"]
[Site "Pereira"]
[Date "2021.01.23"]
[Round "7"]
[White "Hernandez Bermudez, Manuela"]
[Black "Viera, Jeffren"]
[Result "1-0"]
[ECO "B43"]
[WhiteElo "1701"]
[BlackElo "1969"]
[PlyCount "59"]
[EventDate "2021.01.20"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 200 Extra"]
[Source "ChessBase"]
[SourceDate "2021.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2021.03.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 Bb4 6. Bd2 d6 7. Bd3 Nf6 8. Qe2 Nbd7 9. 0-0 0-0 10. Kh1 Qc7 11. f4 b5 12. Ncxb5 axb5 13. Bxb4 Nc5 14. Nxb5 Qb6 15. Bxc5 Qxc5 16. e5 dxe5 17. fxe5 Nd5 18. Qe4 g6 19. Nd6 Bd7 20. Rf3 Ra4 21. Qe2 Nf4 22. Qe3 Qxe3 23. Rxe3 Bc6 24. Be4 Bxe4 25. Rxe4 Rxe4 26. Nxe4 Rc8 27. g3 Nd5 28. c3 Ne3 29. Re1 Nc4 30. Nd6 1-0

[Event "Pereira Risaraldense Cup-C"]
[Site "Pereira"]
[Date "2021.01.23"]
[Round "6"]
[White "Viera, Jeffren"]
[Black "Montoya Molina, Juan Esteban"]
[Result "1-0"]
[ECO "B90"]
[WhiteElo "1969"]
[BlackElo "1731"]
[PlyCount "71"]
[EventDate "2021.01.20"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 200 Extra"]
[Source "ChessBase"]
[SourceDate "2021.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2021.03.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. f3 e5 7. Nb3 Be6 8. Be3 Be7 9. Qd2 Nc6 10. 0-0-0 0-0 11. g4 a5 12. Bb5 Na7 13. Ba4 Bc4 14. Qf2 Nc8 15. h4 Nd7 16. Bxd7 Qxd7 17. Nd2 b5 18. Nxc4 bxc4 19. a4 Qb7 20. Nb5 Rb8 21. Rd5 Bd8 22. Rhd1 Bb6 23. b3 cxb3 24. cxb3 Bxe3+ 25. Qxe3 Rd8 26. Rxe5 Qc6+ 27. Qc5 Ne7 28. Qxc6 Nxc6 29. Red5 Ne5 30. Nd4 Rbc8+ 31. Kd2 Rc5 32. Ke3 Rd7 33. Nb5 f6 34. Rxd6 Rb7 35. Rd8+ Kf7 36. Nd6+ 1-0

[Event "Pereira Risaraldense Cup-C"]
[Site "Pereira"]
[Date "2021.01.22"]
[Round "5"]
[White "Rodriguez Valencia, Sebastian"]
[Black "Viera, Jeffren"]
[Result "0-1"]
[ECO "A17"]
[WhiteElo "1771"]
[BlackElo "1969"]
[PlyCount "78"]
[EventDate "2021.01.20"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 200 Extra"]
[Source "ChessBase"]
[SourceDate "2021.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2021.03.31"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 e6 3. g3 Bb4 4. Bg2 Bxc3 5. bxc3 Qe7 6. d4 d6 7. e3 Nbd7 8. Ba3 c5 9. Ne2 0-0 10. 0-0 Rb8 11. Nf4 b6 12. Qa4 Bb7 13. f3 Rfc8 14. e4 Bc6 15. Qc2 cxd4 16. cxd4 Bb5 17. e5 Ne8 18. exd6 Nxd6 19. Rfe1 Bxc4 20. Qd2 b5 21. Bh3 Rd8 22. d5 e5 23. Qe3 b4 24. Bb2 f6 25. Qxa7 Nb5 26. Qf2 Qc5 27. Ne6 Qxf2+ 28. Kxf2 Rdc8 29. Nxg7 Nc5 30. Bxc8 Nd3+ 31. Kg1 Nxb2 32. Bf5 Kxg7 33. Rab1 Nd4 34. Be4 Na4 35. Rbc1 Nc3 36. a3 Nde2+ 37. Kf2 Nxc1 38. Rxc1 Nxe4+ 39. fxe4 b3 0-1

[Event "Pereira Risaraldense Cup-C"]
[Site "Pereira"]
[Date "2021.01.22"]
[Round "4"]
[White "Viera, Jeffren"]
[Black "Castano Orrego, Simon"]
[Result "1-0"]
[ECO "A08"]
[WhiteElo "1969"]
[BlackElo "1779"]
[PlyCount "75"]
[EventDate "2021.01.20"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 200 Extra"]
[Source "ChessBase"]
[SourceDate "2021.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2021.03.31"]
[SourceQuality "1"]

1. e4 e6 2. Qe2 c5 3. g3 Nc6 4. c3 g6 5. Bg2 Bg7 6. Nf3 Nge7 7. 0-0 d5 8. d3 0-0 9. Bg5 Re8 10. e5 Qb6 11. g4 Bd7 12. h4 Qc7 13. Re1 b5 14. Nbd2 b4 15. Nb3 bxc3 16. bxc3 Na5 17. Rab1 Nxb3 18. Rxb3 Nc6 19. Qe3 c4 20. dxc4 Na5 21. cxd5 Nxb3 22. d6 Qa5 23. axb3 Rac8 24. c4 Rc5 25. Bf6 Bf8 26. h5 Rb8 27. hxg6 fxg6 28. Nd2 a6 29. Ne4 Rxb3 30. Qxb3 Qxe1+ 31. Kh2 Bc6 32. Nxc5 Qxf2 33. Qg3 Qxc5 34. Bxc6 Qxc6 35. Qd3 Qd7 36. c5 Qa4 37. d7 Qf4+ 38. Kh1 1-0

[Event "Pereira Risaraldense Cup-C"]
[Site "Pereira"]
[Date "2021.01.21"]
[Round "3"]
[White "Velasquez, Andres Felipe"]
[Black "Viera, Jeffren"]
[Result "0-1"]
[ECO "B41"]
[WhiteElo "1849"]
[BlackElo "1969"]
[PlyCount "118"]
[EventDate "2021.01.20"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 200 Extra"]
[Source "ChessBase"]
[SourceDate "2021.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2021.03.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. g3 Qc7 6. Bg2 Nf6 7. 0-0 b5 8. e5 Nd5 9. Bxd5 exd5 10. Bf4 Qb6 11. Nc3 Bb7 12. Nf5 d4 13. Nxd4 Bc5 14. Nb3 Qc6 15. Qd5 Qxd5 16. Nxd5 Bxf2+ 17. Rxf2 Bxd5 18. Nd4 Nc6 19. Nf5 0-0 20. Nd6 h6 21. Rd1 Be6 22. h4 Ne7 23. a3 Ra7 24. Rd4 Rc7 25. Kh2 Nc6 26. Rdd2 g5 27. hxg5 hxg5 28. Bxg5 Nxe5 29. Kg1 Ng4 30. Rf4 Kg7 31. Rdd4 Ne3 32. c3 Nd5 33. Rh4 Kg6 34. Bd2 f5 35. Rh6+ Kg7 36. Rdh4 Rg8 37. Bg5 Kf8 38. Rh8 Rc6 39. Rxg8+ Kxg8 40. Nb7 Nb6 41. Nd8 Rc4 42. Rh6 Nd5 43. Nxe6 dxe6 44. Rxe6 Rg4 45. Bh4 Re4 46. Rxa6 Re2 47. Rd6 Rd2 48. Bg5 Rd1+ 49. Kh2 Kf7 50. Kh3 Rh1+ 51. Kg2 Rd1 52. Kf2 Kg7 53. Bf4 Rd3 54. Be5+ Kf7 55. Ke2 Re3+ 56. Kd2 Rxe5 57. Kd3 Nf6 58. Ra6 Ne4 59. Kd4 Re7 0-1

[Event "Pereira Risaraldense Cup-C"]
[Site "Pereira"]
[Date "2021.01.21"]
[Round "2"]
[White "Viera, Jeffren"]
[Black "Gonzalez, Luis Enrique"]
[Result "1-0"]
[ECO "B11"]
[WhiteElo "1969"]
[BlackElo "1872"]
[PlyCount "31"]
[EventDate "2021.01.20"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 200 Extra"]
[Source "ChessBase"]
[SourceDate "2021.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2021.03.31"]
[SourceQuality "1"]

1. e4 c6 2. Nf3 d5 3. Nc3 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. h4 h6 7. Ne5 Bh7 8. Qh5 g6 9. Qf3 Qd5 10. Qxd5 cxd5 11. Bb5+ Kd8 12. Nxf7+ Kc7 13. Nxh8 Bg7 14. Nf7 Nc6 15. Bxc6 Kxc6 16. f4 1-0

[Event "Pereira Risaraldense Cup-C"]
[Site "Pereira"]
[Date "2021.01.20"]
[Round "1"]
[White "Viera, Jeffren"]
[Black "Vega Navascues, Carlos Andres"]
[Result "1-0"]
[ECO "C00"]
[WhiteElo "1969"]
[PlyCount "39"]
[EventDate "2021.01.20"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "CBM 200 Extra"]
[Source "ChessBase"]
[SourceDate "2021.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2021.03.31"]
[SourceQuality "1"]

1. e4 e6 2. Qe2 d5 3. exd5 Nf6 4. c4 c6 5. dxc6 Nxc6 6. Nf3 Bc5 7. Nc3 0-0 8. d3 Nd4 9. Nxd4 Bxd4 10. Be3 e5 11. g3 Ng4 12. Bg2 Be6 13. Bxb7 Rb8 14. Bf3 f5 15. Bxd4 Qxd4 16. 0-0 f4 17. Bxg4 fxg3 18. Bxe6+ Kh8 19. hxg3 Rf6 20. Bd5 1-0

[Event "Uniagraria AlphaZero op 2nd"]
[Site "Uniagraria"]
[Date "2019.11.11"]
[Round "6"]
[White "Munoz, Laura Alexandra"]
[Black "Viera, Jeffren"]
[Result "0-1"]
[ECO "C84"]
[WhiteElo "1812"]
[BlackElo "1600"]
[PlyCount "68"]
[EventDate "2019.11.08"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 193 Extra"]
[Source "ChessBase"]
[SourceDate "2020.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.01.31"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. d3 b5 6. Bb3 Be7 7. 0-0 0-0 8. a4 Bb7 9. Nbd2 d5 10. exd5 Nxd5 11. axb5 axb5 12. Rxa8 Bxa8 13. Re1 Nf4 14. Ne4 Ng6 15. c3 h6 16. Be3 Qc8 17. Qc2 Kh8 18. d4 f5 19. Ned2 e4 20. Ne5 Ncxe5 21. dxe5 Nxe5 22. c4 Nd3 23. Ra1 f4 24. Bd4 c5 25. Bxg7+ Kxg7 26. f3 Nb4 27. Qc3+ Bf6 28. Ra7+ Bb7 29. Qc1 Bd4+ 30. Kh1 Nd3 31. Qc2 Nf2+ 32. Kg1 b4 33. Kf1 Qb8 34. Nxe4 Nxe4 0-1

[Event "Uniagraria AlphaZero op 2nd"]
[Site "Uniagraria"]
[Date "2019.11.11"]
[Round "7"]
[White "Viera, Jeffren"]
[Black "Torres, Richard"]
[Result "1-0"]
[ECO "C07"]
[WhiteElo "1600"]
[BlackElo "1992"]
[PlyCount "85"]
[EventDate "2019.11.08"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 193 Extra"]
[Source "ChessBase"]
[SourceDate "2020.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.01.31"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 Qxd5 5. dxc5 Qxc5 6. Ngf3 Nf6 7. Bd3 Bd6 8. 0-0 0-0 9. Qe2 Nbd7 10. Nc4 Bc7 11. b4 Qh5 12. Bb2 b5 13. Ncd2 a6 14. Ne4 Bb7 15. Ng3 Bxf3 16. Nxh5 Bxe2 17. Nxf6+ Nxf6 18. Bxe2 Nd5 19. a3 Rac8 20. g3 Bb6 21. Bd3 Nc3 22. Bxc3 Rxc3 23. a4 Rfc8 24. axb5 axb5 25. Ra6 Bd8 26. Ra7 Rb8 27. Rd1 Bb6 28. Rd7 g6 29. Rd2 Ra3 30. Bxb5 Ra1+ 31. Kg2 Rb1 32. c3 Rc1 33. R7d3 Bxf2 34. Rd8+ Rxd8 35. Rxd8+ Kg7 36. Kxf2 Rxc3 37. Be2 Kf6 38. b5 h5 39. b6 Rb3 40. Rb8 Rb2 41. b7 Ke5 42. Ke3 g5 43. Ba6 1-0

[Event "Uniagraria AlphaZero op 2nd"]
[Site "Uniagraria"]
[Date "2019.11.10"]
[Round "4"]
[White "Estrella Becerra, Fernando"]
[Black "Viera, Jeffren"]
[Result "1/2-1/2"]
[ECO "A33"]
[WhiteElo "1946"]
[BlackElo "1600"]
[PlyCount "85"]
[EventDate "2019.11.08"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 193 Extra"]
[Source "ChessBase"]
[SourceDate "2020.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.01.31"]
[SourceQuality "1"]

1. c4 Nf6 2. g3 e6 3. Bg2 c5 4. Nc3 a6 5. Nf3 Be7 6. 0-0 Nc6 7. d4 cxd4 8. Nxd4 0-0 9. b3 Qc7 10. Bb2 d6 11. Rc1 e5 12. Nc2 Be6 13. e4 Rac8 14. Ne3 Qb6 15. Ncd5 Bxd5 16. cxd5 Na7 17. Nf5 Rfe8 18. Rxc8 Nxc8 19. Qc1 Bf8 20. Qg5 Kh8 21. Rc1 Ne7 22. Nh6 gxh6 23. Qxf6+ Bg7 24. Qxf7 Rf8 25. Qxe7 Qxf2+ 26. Kh1 Qxb2 27. Rg1 Qxa2 28. Qxb7 Rf2 29. Qb6 Bf8 30. b4 Qe2 31. h3 h5 32. Qd8 Qe3 33. Qh4 Qd4 34. g4 hxg4 35. Qxg4 Rf6 36. Qc8 Qxb4 37. Qxa6 Bh6 38. Qc8+ Rf8 39. Qg4 Be3 40. Rf1 Rxf1+ 41. Bxf1 Bf4 42. Qc8+ Kg7 43. Qd7+ 1/2-1/2

[Event "Uniagraria AlphaZero op 2nd"]
[Site "Uniagraria"]
[Date "2019.11.09"]
[Round "2"]
[White "Motta Leon, Gerardo"]
[Black "Viera, Jeffren"]
[Result "0-1"]
[ECO "B41"]
[WhiteElo "2034"]
[BlackElo "1600"]
[PlyCount "76"]
[EventDate "2019.11.08"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 193 Extra"]
[Source "ChessBase"]
[SourceDate "2020.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.01.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. c4 Qc7 6. Nc3 Nf6 7. a3 Be7 8. Be2 b6 9. Be3 d6 10. 0-0 Bb7 11. f3 0-0 12. Rc1 Nbd7 13. b4 Rac8 14. Qe1 h6 15. Qg3 Kh8 16. Rfd1 Rfd8 17. Qh3 Nf8 18. g4 Kg8 19. Qg3 Qd7 20. e5 dxe5 21. Nf5 Qc7 22. Nxe7+ Qxe7 23. Bxb6 Rxd1+ 24. Rxd1 Ng6 25. Be3 Rd8 26. Rxd8+ Qxd8 27. Qe1 Nf4 28. Bxf4 Qd4+ 29. Qf2 Qxf4 30. Nd1 e4 31. fxe4 Qxe4 32. Qf1 Qh1+ 33. Kf2 Qxh2+ 34. Ke3 Qe5+ 35. Kd2 Ne4+ 36. Kd3 Qd6+ 37. Kc2 Qd2+ 38. Kb1 Ng3 0-1

[Event "Uniagraria AlphaZero op 2nd"]
[Site "Uniagraria"]
[Date "2019.11.08"]
[Round "1"]
[White "Viera, Jeffren"]
[Black "Celis Vargas, Walter Enrique"]
[Result "1-0"]
[ECO "C00"]
[WhiteElo "1600"]
[BlackElo "1665"]
[PlyCount "51"]
[EventDate "2019.11.08"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "COL"]
[SourceTitle "CBM 193 Extra"]
[Source "ChessBase"]
[SourceDate "2020.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.01.31"]
[SourceQuality "1"]

1. e4 e6 2. Qe2 Nc6 3. c3 g6 4. g3 Bg7 5. Bg2 Nge7 6. d4 d5 7. e5 0-0 8. f4 a6 9. Nf3 Nf5 10. Be3 b5 11. Nbd2 b4 12. Bf2 bxc3 13. bxc3 a5 14. Qb5 Bd7 15. Qd3 Rb8 16. g4 Nfe7 17. Nb3 Nc8 18. Nc5 Nb6 19. Rb1 Re8 20. 0-0 Bf8 21. Bh4 Qc8 22. Bf6 Nc4 23. Ng5 Bg7 24. f5 Rxb1 25. Rxb1 Ne7 26. Bxg7 1-0

