[Event "Pan American-ch U12"]
[Site "Medellin"]
[Date "2007.07.07"]
[Round "9"]
[White "Neira, Juan David"]
[Black "Perez Viana, Yhoiner"]
[Result "1-0"]
[ECO "C57"]
[PlyCount "101"]
[EventDate "2007.07.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. Bc4 Qe7 5. Ng5 d5 6. exd5 Ng4 7. dxc6 Qxg5 8. d3 Qf6 9. Qf3 bxc6 10. Qxf6 Nxf6 11. 0-0 Bb4 12. Ne2 Bc5 13. c3 Bd6 14. Bb3 Ba6 15. c4 0-0 16. Ba4 c5 17. Bc6 Rab8 18. b3 Bb7 19. Ba4 Ng4 20. h3 Nf6 21. Bd2 e4 22. d4 cxd4 23. Nxd4 Bc5 24. Nb5 c6 25. Nc3 Rfe8 26. Rfe1 Bd4 27. Rad1 Rbd8 28. a3 Bxc3 29. Bxc3 Rxd1 30. Rxd1 e3 31. fxe3 Rxe3 32. Bd4 Re2 33. Bxa7 h6 34. Rd8+ Re8 35. Rxe8+ Nxe8 36. b4 Nd6 37. Bb3 Ba6 38. c5 Nc8 39. Bb8 Ne7 40. Kf2 Nf5 41. Ba4 Nd4 42. Ke3 Nf5+ 43. Ke4 Ne7 44. Ke5 Ng6+ 45. Kd6 Bb5 46. Bxb5 cxb5 47. c6 Kf8 48. Kd7 f6 49. c7 Ne7 50. c8Q+ Nxc8 51. Kxc8 1-0

[Event "Pan American-ch U12"]
[Site "Medellin"]
[Date "2007.07.06"]
[Round "8"]
[White "Perez Viana, Yhoiner"]
[Black "Morantes Maldonado, Brandon"]
[Result "0-1"]
[ECO "B40"]
[PlyCount "56"]
[EventDate "2007.07.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. g3 e6 4. Bg2 d5 5. d3 Nf6 6. Nfd2 Bd6 7. Nc3 Nd4 8. 0-0 Bd7 9. Re1 Qc7 10. exd5 0-0-0 11. dxe6 Bxe6 12. Nf3 Nxf3+ 13. Bxf3 Rhe8 14. Nb5 Qb6 15. c4 Qa5 16. Bd2 Qa6 17. Bf4 Bxf4 18. gxf4 Bh3 19. Rxe8 Rxe8 20. Qb3 Nh5 21. Nd6+ Qxd6 22. Qxb7+ Kd8 23. Bxh5 Qe6 24. Qa8+ Ke7 25. Qxa7+ Kf8 26. Qxc5+ Kg8 27. Qb4 Qc6 28. Re1 Qg2# 0-1

[Event "Pan American-ch U12"]
[Site "Medellin"]
[Date "2007.07.05"]
[Round "6"]
[White "Cardona, Efrain"]
[Black "Perez Viana, Yhoiner"]
[Result "1-0"]
[ECO "B00"]
[PlyCount "67"]
[EventDate "2007.07.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. d4 Nc6 2. e4 e5 3. d5 Nb8 4. Nf3 Bd6 5. Nc3 Ne7 6. Bc4 c6 7. dxc6 Nbxc6 8. Qxd6 0-0 9. 0-0 Rb8 10. Nxe5 b6 11. Nxf7 Qe8 12. Ne5+ Kh8 13. Nxc6 Nxc6 14. Qg3 Nb4 15. Qxb8 Nc6 16. Qg3 Nb4 17. Bd3 Ba6 18. Bxa6 Nxa6 19. Nd5 Qxe4 20. Ne3 Qe8 21. b3 Nc5 22. Bb2 Qe7 23. Nf5 Qf7 24. Bxg7+ Kg8 25. Bxf8+ Kxf8 26. Qb8+ Qe8 27. Qxe8+ Kxe8 28. Nd6+ Kd8 29. Rfe1 Ne6 30. g4 h6 31. h4 a5 32. a4 Nf4 33. Re3 Ne6 34. Re5 1-0

[Event "Pan American-ch U12"]
[Site "Medellin"]
[Date "2007.07.05"]
[Round "7"]
[White "Perez Viana, Yhoiner"]
[Black "Arias, Juan Esteban"]
[Result "0-1"]
[ECO "A00"]
[PlyCount "50"]
[EventDate "2007.07.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. Nc3 e5 2. e3 Nf6 3. Nf3 e4 4. Ng5 d5 5. f3 Bf5 6. Be2 Bb4 7. a3 Bxc3 8. bxc3 0-0 9. d3 Re8 10. f4 Qd7 11. a4 Nc6 12. 0-0 h6 13. Nh3 Bxh3 14. gxh3 Qxh3 15. Rf2 Ne7 16. Qf1 Qxf1+ 17. Bxf1 Nf5 18. d4 Nh4 19. Bg2 Ng4 20. Rf1 Re6 21. f5 Rc6 22. Ra3 g6 23. fxg6 Rxg6 24. h3 Nxe3 25. Bxe3 Nxg2 0-1

[Event "Pan American-ch U12"]
[Site "Medellin"]
[Date "2007.07.04"]
[Round "4"]
[White "Perez Viana, Yhoiner"]
[Black "Cardenas Manchego, Juan Pablo"]
[Result "0-1"]
[ECO "A00"]
[PlyCount "48"]
[EventDate "2007.07.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. Nc3 e5 2. Nf3 Nc6 3. g3 Nf6 4. Bg2 d5 5. e3 Bg4 6. 0-0 e4 7. d4 Bxf3 8. Bxf3 exf3 9. Qxf3 Be7 10. Qg2 Qd7 11. f3 g5 12. h4 gxh4 13. gxh4 0-0-0 14. Qd2 Qh3 15. Qg2 Rdg8 16. Rf2 Rxg2+ 17. Rxg2 Qxf3 18. Ne2 Ne4 19. Nf4 Bxh4 20. Nd3 Nb4 21. Bd2 Nxd3 22. Rf1 Bf2+ 23. Kh1 Qh3+ 24. Rh2 Ng3# 0-1

[Event "Pan American-ch U12"]
[Site "Medellin"]
[Date "2007.07.03"]
[Round "3"]
[White "Castano Ramirez, Jhohan"]
[Black "Perez Viana, Yhoiner"]
[Result "1-0"]
[ECO "B02"]
[PlyCount "88"]
[EventDate "2007.07.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 Nf6 2. Nc3 g6 3. Bc4 Bg7 4. Qf3 d6 5. h3 c6 6. d3 a6 7. Nge2 b5 8. Bb3 0-0 9. 0-0 a5 10. a4 b4 11. Nd1 Be6 12. c4 Nh5 13. Bf4 f5 14. exf5 Bxf5 15. c5+ Kh8 16. d4 d5 17. Bg5 Be4 18. Qe3 Bf6 19. Bxf6+ Nxf6 20. Ng3 e6 21. Nxe4 Nxe4 22. Bc2 Ng5 23. b3 Nd7 24. Nb2 Nf6 25. Qxg5 Nh5 26. Qh6 Qf6 27. Rad1 Qg7 28. Qxg7+ Nxg7 29. Rfe1 Rae8 30. Nd3 Nf5 31. Ne5 h5 32. Nxg6+ Kg7 33. Nxf8 Rxf8 34. Rxe6 Nh4 35. g3 Nf3+ 36. Kg2 h4 37. gxh4 Nxh4+ 38. Kg3 Nf5+ 39. Kg2 Nh4+ 40. Kf1 Kf7 41. Rxc6 Rg8 42. Rc7+ Kf8 43. Rc8+ Kf7 44. Rxg8 Kxg8 1-0

[Event "Pan American-ch U12"]
[Site "Medellin"]
[Date "2007.07.02"]
[Round "2"]
[White "Cardenas, Joan Sebastian"]
[Black "Perez Viana, Yhoiner"]
[Result "1-0"]
[ECO "C50"]
[PlyCount "41"]
[EventDate "2007.07.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. Bc4 h6 5. d3 Bc5 6. 0-0 0-0 7. Bd2 d6 8. h3 Nh5 9. Nxe5 Nxe5 10. Qxh5 Qf6 11. Nd5 Qg6 12. Ne7+ Kh7 13. Nxg6 fxg6 14. Qe2 Bd7 15. c3 c6 16. d4 Bxd4 17. cxd4 Nf7 18. f4 g5 19. Bb3 c5 20. dxc5 dxc5 21. f5 1-0

[Event "Pan American-ch U12"]
[Site "Medellin"]
[Date "2007.07.02"]
[Round "1"]
[White "Perez Viana, Yhoiner"]
[Black "Arias Gaviria, Mario Alexis"]
[Result "0-1"]
[ECO "A06"]
[PlyCount "66"]
[EventDate "2007.07.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "COL"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. Nf3 Nf6 2. e3 d5 3. Nc3 e6 4. g3 b6 5. a3 Bb7 6. Bg2 c5 7. d4 Nc6 8. Na4 Bd6 9. b4 cxb4 10. axb4 Bxb4+ 11. Bd2 Bd6 12. 0-0 0-0 13. Nh4 Nd7 14. Bc3 f5 15. Bh3 g5 16. Nf3 g4 17. Bxg4 fxg4 18. Ng5 Qxg5 19. f4 gxf3 20. Rxf3 Rxf3 21. Qxf3 Rf8 22. Qe2 h5 23. Kg2 e5 24. Rf1 Nf6 25. dxe5 Bxe5 26. Bxe5 Nxe5 27. h3 d4+ 28. Kh2 Qxe3 29. Qf2 Nf3+ 30. Kg2 Nd2+ 31. Kg1 Nxf1 32. Kxf1 Ng4 33. hxg4 Qxf2# 0-1

