[Event "Florianopolis Regional STD op"]
[Site "Florianopolis"]
[Date "2018.10.14"]
[Round "6"]
[White "Caldeira, Adriano"]
[Black "Massarotto, Dieferson Flori"]
[Result "1-0"]
[ECO "C52"]
[WhiteElo "2135"]
[BlackElo "1979"]
[PlyCount "87"]
[EventDate "2018.10.12"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 186 Extra"]
[Source "ChessBase"]
[SourceDate "2018.08.24"]
[SourceVersion "1"]
[SourceVersionDate "2018.08.24"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. b4 Bxb4 5. c3 Bc5 6. 0-0 Bb6 7. d4 d6 8. dxe5 dxe5 9. Qb3 Qf6 10. Bd5 h6 11. a4 a5 12. Be3 Nd8 13. Bxb6 cxb6 14. Na3 Ne7 15. Nc4 Ng6 16. Nxb6 Rb8 17. Qb5+ Nc6 18. Qc5 Nge7 19. Bxc6+ bxc6 20. Rab1 0-0 21. Nd5 cxd5 22. Rxb8 Bg4 23. Rxf8+ Kxf8 24. Rb1 Kg8 25. Nd2 Ng6 26. g3 dxe4 27. Nxe4 Qf3 28. Qe3 Qf5 29. Re1 Bf3 30. Nd2 Nh4 31. Nxf3 Nxf3+ 32. Kg2 Nxe1+ 33. Qxe1 Qe6 34. Qe4 Qe8 35. Qc4 Qa8+ 36. Kf1 Qd8 37. Qb5 e4 38. Qe2 f5 39. c4 Qd4 40. Kg2 Qd7 41. Qc2 Qc6 42. Kg1 g6 43. c5 Kh8 44. Qc3+ 1-0

[Event "Florianopolis Regional STD op"]
[Site "Florianopolis"]
[Date "2018.10.14"]
[Round "5"]
[White "Massarotto, Dieferson Flori"]
[Black "Mariani, Daniel Brandao"]
[Result "1-0"]
[ECO "C50"]
[WhiteElo "1979"]
[BlackElo "2050"]
[PlyCount "113"]
[EventDate "2018.10.12"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 186 Extra"]
[Source "ChessBase"]
[SourceDate "2018.08.24"]
[SourceVersion "1"]
[SourceVersionDate "2018.08.24"]
[SourceQuality "1"]

1. e4 e5 2. Bc4 Nf6 3. d3 Nc6 4. Nc3 Bc5 5. Nf3 d6 6. Na4 Na5 7. Nxc5 dxc5 8. Nxe5 Nxc4 9. Nxc4 Be6 10. Ne3 Qd7 11. 0-0 0-0-0 12. b3 h5 13. Bb2 Qe7 14. Qe1 h4 15. f4 Kb8 16. f5 Bc8 17. Qf2 h3 18. g3 b6 19. a4 Bb7 20. Qf4 Rhe8 21. Ng4 Nxg4 22. Qxg4 c4 23. bxc4 Qc5+ 24. Kh1 f6 25. a5 Qe3 26. Rae1 Qd2 27. Re2 Qh6 28. axb6 axb6 29. Bc1 Qh8 30. Bf4 Bc6 31. Be3 Kb7 32. Rd1 Re5 33. Rb1 Ra8 34. c5 b5 35. c4 b4 36. Rxb4+ Kc8 37. Bd4 Re7 38. Bb2 Qe8 39. Qxh3 Qd7 40. g4 Ra2 41. Qf3 Re8 42. h3 Qe7 43. Bd4 Ra3 44. Reb2 Kd7 45. R2b3 Ra2 46. Bf2 Qe5 47. Qg3 Qa1+ 48. Rb1 Qc3 49. R4b3 Qc2 50. Rb8 Rxb8 51. Rxb8 Ra1+ 52. Kg2 Qd1 53. Qe3 Ke7 54. Rc8 Ra7 55. Qd4 Bd7 56. Rg8 c6 57. Qd6+ 1-0

[Event "Florianopolis Regional STD op"]
[Site "Florianopolis"]
[Date "2018.10.13"]
[Round "4"]
[White "Da Silva, Joao Carlos Orguim"]
[Black "Massarotto, Dieferson Flori"]
[Result "0-1"]
[ECO "B20"]
[WhiteElo "1759"]
[BlackElo "1979"]
[PlyCount "40"]
[EventDate "2018.10.12"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 186 Extra"]
[Source "ChessBase"]
[SourceDate "2018.08.24"]
[SourceVersion "1"]
[SourceVersionDate "2018.08.24"]
[SourceQuality "1"]

1. c4 e5 2. e4 c5 3. Nc3 Nc6 4. Nge2 d6 5. d3 f5 6. f4 Nf6 7. g3 fxe4 8. dxe4 Bg4 9. Bg2 Nd4 10. 0-0 Qd7 11. Qd3 Bxe2 12. Nxe2 Be7 13. b3 h5 14. Nxd4 cxd4 15. h3 0-0-0 16. Bd2 Kb8 17. Rf3 Rc8 18. Rc1 Rc7 19. Rff1 Rhc8 20. Kh2 Nh7 0-1

[Event "Florianopolis Regional STD op"]
[Site "Florianopolis"]
[Date "2018.10.13"]
[Round "3"]
[White "Massarotto, Dieferson Flori"]
[Black "Calcado, Acyr Rogerio"]
[Result "0-1"]
[ECO "C24"]
[WhiteElo "1979"]
[BlackElo "2087"]
[PlyCount "148"]
[EventDate "2018.10.12"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 186 Extra"]
[Source "ChessBase"]
[SourceDate "2018.08.24"]
[SourceVersion "1"]
[SourceVersionDate "2018.08.24"]
[SourceQuality "1"]

1. e4 e5 2. Bc4 Nf6 3. d3 d5 4. exd5 Nxd5 5. Nc3 Bb4 6. Qf3 Be6 7. a3 Bxc3+ 8. bxc3 0-0 9. Ne2 Nc6 10. Qg3 f5 11. f3 Qd7 12. Bxd5 Qxd5 13. c4 Qd7 14. Bb2 Rae8 15. 0-0 Nd4 16. Bxd4 exd4 17. Rfe1 Bf7 18. Qf4 c5 19. Ng3 g6 20. Kf1 Qa4 21. Qd2 Re3 22. Rxe3 dxe3 23. Qxe3 Qxc2 24. Rc1 Qb2 25. Re1 Qxa3 26. Kg1 Re8 27. Qf2 Rxe1+ 28. Qxe1 Qxd3 29. h3 Qxc4 30. Qe7 Qd5 31. Qg5 Qd1+ 32. Kh2 Qd6 33. f4 Kf8 34. Qh6+ Ke7 35. Qxh7 Qxf4 36. Qh8 Qc7 37. Qh4+ Kd7 38. Kh1 b6 39. Ne2 Kc8 40. Qf6 Kb7 41. Nc3 a6 42. Na4 Be8 43. Nxb6 Qxb6 44. Qe7+ Qc7 45. Qxe8 Qd6 46. Qf7+ Kc6 47. Qc4 Kc7 48. Qf7+ Qd7 49. Qc4 Qd1+ 50. Kh2 Qd6+ 51. Kh1 g5 52. Qf7+ Qd7 53. Qc4 Qd1+ 54. Kh2 Qd6+ 55. Kh1 f4 56. Qf7+ Kb6 57. Qb3+ Kc6 58. Qc4 a5 59. Qa6+ Kd7 60. Qxa5 Qd1+ 61. Kh2 Qd6 62. Qc3 Qd4 63. Qc2 c4 64. Qf5+ Kd6 65. Qxg5 c3 66. h4 Qe5 67. Qd8+ Kc5 68. Qc8+ Kd4 69. Qd7+ Ke3 70. Qd1 f3+ 71. Kg1 fxg2 72. Kxg2 Qe4+ 73. Kg3 Qf4+ 74. Kg2 Qf2+ 0-1

[Event "Florianopolis Regional STD op"]
[Site "Florianopolis"]
[Date "2018.10.12"]
[Round "2"]
[White "Duarte, Leonardo Torqui"]
[Black "Massarotto, Dieferson Flori"]
[Result "0-1"]
[ECO "B50"]
[WhiteElo "1649"]
[BlackElo "1979"]
[PlyCount "68"]
[EventDate "2018.10.12"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 186 Extra"]
[Source "ChessBase"]
[SourceDate "2018.08.24"]
[SourceVersion "1"]
[SourceVersionDate "2018.08.24"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. Nc3 d6 4. Bc4 Nf6 5. d3 g6 6. b3 Bg7 7. Bb2 0-0 8. Qd2 a6 9. 0-0-0 e6 10. Rhe1 d5 11. exd5 exd5 12. Nxd5 Nxd5 13. Bxg7 Kxg7 14. Bxd5 Qxd5 15. Qc3+ f6 16. d4 Bg4 17. dxc5 Qh5 18. Rd2 Bxf3 19. gxf3 Rad8 20. Rxd8 Rxd8 21. Re6 Qf5 22. Qe3 Qd5 23. Re7+ Nxe7 24. Qxe7+ Kg8 25. Qe1 Qxc5 26. Qe6+ Kg7 27. Qe2 Qg5+ 28. Kb1 Qe5 29. Qxe5 fxe5 30. Kb2 Rd2 31. Kc3 Rxf2 32. a3 Rxh2 33. Kb4 Rxc2 34. a4 h5 0-1

[Event "Florianopolis Regional STD op"]
[Site "Florianopolis"]
[Date "2018.10.12"]
[Round "1"]
[White "Massarotto, Dieferson Flori"]
[Black "Sarda, Pedro Sada"]
[Result "1-0"]
[ECO "B23"]
[WhiteElo "1979"]
[BlackElo "1445"]
[PlyCount "55"]
[EventDate "2018.10.12"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 186 Extra"]
[Source "ChessBase"]
[SourceDate "2018.08.24"]
[SourceVersion "1"]
[SourceVersionDate "2018.08.24"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 e6 3. f4 d5 4. Nf3 Nc6 5. Bb5 Be7 6. 0-0 Nf6 7. d3 d4 8. Ne2 Bd7 9. h3 a6 10. Bxc6 Bxc6 11. Ne5 Qc7 12. Ng3 0-0 13. Qe2 b5 14. Nxc6 Qxc6 15. f5 e5 16. Bg5 c4 17. Bxf6 Bxf6 18. Qg4 Be7 19. f6 Bxf6 20. Nh5 Kh8 21. Rxf6 Qxf6 22. Nxf6 gxf6 23. Qf5 Kg7 24. Rf1 cxd3 25. cxd3 Rfe8 26. Rf3 Re6 27. Rg3+ Kh8 28. Qg4 1-0

[Event "Sao Bento do Sul U2050 2nd"]
[Site "Sao Bento do Sul"]
[Date "2016.09.18"]
[Round "7.6"]
[White "Massarotto, Dieferson Flori"]
[Black "Horst, Rodrigo"]
[Result "1-0"]
[ECO "C01"]
[WhiteElo "1954"]
[BlackElo "1870"]
[PlyCount "54"]
[EventDate "2016.09.16"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 d6 2. d4 e6 3. c4 b6 4. Nc3 Nd7 5. f4 g6 6. Nf3 Bb7 7. Bd3 a6 8. 0-0 Bg7 9. Qe1 Qe7 10. Qg3 h6 11. Bd2 0-0-0 12. a4 a5 13. Rfb1 c5 14. Nb5 e5 15. fxe5 dxe5 16. d5 g5 17. Bc3 Re8 18. Qe1 g4 19. Nd2 Nb8 20. Nb3 f5 21. Nxa5 f4 22. Nc6 Bxc6 23. dxc6 f3 24. a5 Rf8 25. Qf2 fxg2 26. Qxg2 g3 27. hxg3 h5 1-0

[Event "Sao Bento do Sul U2050 2nd"]
[Site "Sao Bento do Sul"]
[Date "2016.09.18"]
[Round "6.4"]
[White "Pereira, Geanfrancesco"]
[Black "Massarotto, Dieferson Flori"]
[Result "1-0"]
[ECO "B31"]
[WhiteElo "1944"]
[BlackElo "1954"]
[PlyCount "53"]
[EventDate "2016.09.16"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. c3 Bg7 5. 0-0 d6 6. h3 Bd7 7. Re1 Nf6 8. d4 cxd4 9. cxd4 0-0 10. Nc3 Rc8 11. e5 Ne8 12. Bg5 dxe5 13. dxe5 Nc7 14. Bxc6 bxc6 15. Qa4 Ne6 16. Qxa7 Nxg5 17. Nxg5 h6 18. Nf3 Rc7 19. Qc5 Qc8 20. Rac1 Rb7 21. b3 Kh7 22. Ne4 Re8 23. Qc4 Rb5 24. Qxf7 Be6 25. Neg5+ hxg5 26. Nxg5+ Kh8 27. Nxe6 1-0

[Event "Sao Bento do Sul U2050 2nd"]
[Site "Sao Bento do Sul"]
[Date "2016.09.17"]
[Round "5.6"]
[White "Massarotto, Dieferson Flori"]
[Black "Fischer Junior, Donaldo"]
[Result "1-0"]
[ECO "B23"]
[WhiteElo "1954"]
[BlackElo "1897"]
[PlyCount "47"]
[EventDate "2016.09.16"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 e6 3. f4 d5 4. Nf3 Nf6 5. Bb5+ Bd7 6. Bxd7+ Qxd7 7. e5 Ng8 8. 0-0 b5 9. d4 c4 10. Ne2 g6 11. c3 Na6 12. Kh1 Ne7 13. Nh4 Nc8 14. g4 Be7 15. Qe1 h5 16. g5 0-0 17. Ng3 Kh7 18. Qe2 Rh8 19. f5 Bf8 20. fxg6+ fxg6 21. Nxh5 gxh5 22. Qxh5+ Kg8 23. Rxf8+ Kxf8 24. Qxh8+ 1-0

[Event "Sao Bento do Sul U2050 2nd"]
[Site "Sao Bento do Sul"]
[Date "2016.09.17"]
[Round "3.3"]
[White "Massarotto, Dieferson Flori"]
[Black "Lisboa Torres, Eduardo"]
[Result "1-0"]
[ECO "B23"]
[WhiteElo "1954"]
[BlackElo "1893"]
[PlyCount "61"]
[EventDate "2016.09.16"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. f4 d6 4. Nf3 g6 5. Bc4 Bg7 6. 0-0 e6 7. d3 Nge7 8. a3 a6 9. Qe1 b5 10. Ba2 Nd4 11. Nxd4 cxd4 12. Ne2 Qc7 13. Bb3 Bb7 14. Ng3 0-0 15. f5 exf5 16. exf5 Be5 17. fxg6 hxg6 18. Bh6 Bg7 19. Bxg7 Kxg7 20. Qf2 f6 21. Qxd4 Qc5 22. Qxc5 dxc5 23. Rae1 Rae8 24. Kf2 Nd5 25. Rxe8 Rxe8 26. Bxd5 Bxd5 27. Ne2 Bxg2 28. Rg1 Bc6 29. Nf4 Kf7 30. Rxg6 Bb7 31. Rh6 1-0

[Event "Sao Bento do Sul U2050 2nd"]
[Site "Sao Bento do Sul"]
[Date "2016.09.17"]
[Round "4.2"]
[White "Peixoto, Helio Ricardo Souti"]
[Black "Massarotto, Dieferson Flori"]
[Result "1-0"]
[ECO "B30"]
[WhiteElo "1940"]
[BlackElo "1954"]
[PlyCount "62"]
[EventDate "2016.09.16"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. Qe2 e5 4. g3 d6 5. Bg2 Be7 6. c3 Nf6 7. 0-0 Bg4 8. h3 Bh5 9. d3 h6 10. g4 Bg6 11. Nh4 Qd7 12. Nxg6 fxg6 13. Be3 g5 14. Nd2 0-0-0 15. Nb3 Rh7 16. d4 cxd4 17. cxd4 exd4 18. Nxd4 Nxd4 19. Bxd4 Kb8 20. e5 Ne8 21. e6 Qc8 22. Rac1 Nc7 23. Qc2 Rhh8 24. Bxa7+ Kxa7 25. Qxc7 Qxc7 26. Rxc7 Bf6 27. Rxb7+ Ka6 28. Rc1 d5 29. Rb3 Rd6 30. Rc7 Ra8 31. Bf1+ Ka5 1-0

[Event "Sao Bento do Sul U2050 2nd"]
[Site "Sao Bento do Sul"]
[Date "2016.09.16"]
[Round "2.6"]
[White "Kozak, Dalton Demetrio"]
[Black "Massarotto, Dieferson Flori"]
[Result "0-1"]
[ECO "A43"]
[WhiteElo "1842"]
[BlackElo "1954"]
[PlyCount "114"]
[EventDate "2016.09.16"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. d4 c5 2. dxc5 Na6 3. Nc3 Nxc5 4. Nf3 d6 5. e3 Nf6 6. Bb5+ Bd7 7. 0-0 g6 8. Qe2 Bg7 9. Rb1 0-0 10. Bxd7 Qxd7 11. e4 Rac8 12. Bg5 Ne6 13. Rbd1 Nxg5 14. Nxg5 Qc7 15. h4 Rfe8 16. Nf3 Nd7 17. Nd4 Qb6 18. Na4 Qb4 19. b3 Bxd4 20. a3 Qxa3 21. Rxd4 a6 22. Rb1 b5 23. Nb2 Qc5 24. Rd2 Ne5 25. Nd1 Rc7 26. Ne3 Ra8 27. h5 Kg7 28. Rbd1 Rb7 29. Rd5 Qc8 30. f4 Nd7 31. h6+ Kxh6 32. Qg4 Kg7 33. e5 Nb6 34. R5d2 Qxg4 35. Nxg4 d5 36. Ne3 e6 37. g4 Rh8 38. Ra1 Ra7 39. g5 h6 40. gxh6+ Rxh6 41. Rh2 Rxh2 42. Kxh2 a5 43. Kg3 a4 44. bxa4 bxa4 45. Ng4 Nd7 46. Ne3 Nc5 47. Nd1 Rb7 48. Nc3 Rb2 49. Nxa4 Nxa4 50. Rxa4 Rxc2 51. Kg4 Rc7 52. Kg5 Rc4 53. Ra7 Rd4 54. Kg4 Rd1 55. Ra4 Rg1+ 56. Kf3 f6 57. f5 Rf1+ 0-1

[Event "Sao Bento do Sul U2050 2nd"]
[Site "Sao Bento do Sul"]
[Date "2016.09.16"]
[Round "1.7"]
[White "Massarotto, Dieferson Flori"]
[Black "Favero, Bruna Francescato"]
[Result "1-0"]
[ECO "C90"]
[WhiteElo "1954"]
[BlackElo "1500"]
[PlyCount "55"]
[EventDate "2016.09.16"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bc4 Nf6 5. 0-0 b5 6. Bb3 Be7 7. Re1 d6 8. c3 Bb7 9. d3 Na5 10. Bc2 c5 11. Nbd2 Nc6 12. Nf1 h6 13. Ng3 0-0 14. Be3 Ng4 15. Bd2 Nf6 16. h3 Re8 17. Nh2 Qc7 18. Ng4 Bc8 19. Nxf6+ Bxf6 20. Qf3 Qe7 21. Bb3 Na5 22. Bd5 Bb7 23. Nf5 Qd8 24. c4 Nc6 25. Qh5 Qc7 26. Bxh6 g6 27. Qxg6+ Kh8 28. Qxf6+ 1-0

[Event "Sao Bento do Sul U2050 1st"]
[Site "Sao Bento do Sul"]
[Date "2016.05.22"]
[Round "6.7"]
[White "Horst, Rodrigo"]
[Black "Massarotto, Dieferson Flori"]
[Result "0-1"]
[ECO "A01"]
[WhiteElo "1870"]
[PlyCount "38"]
[EventDate "2016.05.20"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. b3 e5 2. d3 Nc6 3. a3 Bc5 4. e3 Bb6 5. Bb2 d6 6. Nd2 f5 7. g3 Nf6 8. Ne2 a6 9. h3 Be6 10. Bg2 Qd7 11. c3 a5 12. Qc2 Bd5 13. e4 fxe4 14. dxe4 Be6 15. Qd3 Qf7 16. 0-0 0-0 17. c4 Nh5 18. h4 g5 19. Nf3 g4 0-1

[Event "Sao Bento do Sul U2050 1st"]
[Site "Sao Bento do Sul"]
[Date "2016.05.22"]
[Round "7.3"]
[White "Massarotto, Dieferson Flori"]
[Black "Reichert, Thiago da Cruz"]
[Result "1-0"]
[ECO "C05"]
[BlackElo "1966"]
[PlyCount "52"]
[EventDate "2016.05.20"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. f4 c5 6. c3 Nc6 7. Ne2 cxd4 8. cxd4 f6 9. Nf3 Qb6 10. a3 Be7 11. Ng3 0-0 12. Bd3 fxe5 13. fxe5 Rxf3 14. Qxf3 Qxd4 15. Ne2 Qxe5 16. 0-0 Nf6 17. Bd2 Qxb2 18. Bg5 Ne5 19. Qg3 Nxd3 20. Qxd3 Bc5+ 21. Kh1 Ne4 22. Rab1 Qxa3 23. Qb5 Nf2+ 24. Rxf2 Bxf2 25. Rf1 Qc5 26. Qe8+ Qf8 1-0

[Event "Sao Bento do Sul U2050 1st"]
[Site "Sao Bento do Sul"]
[Date "2016.05.21"]
[Round "4.1"]
[White "Acosta, Pablo Alejandro"]
[Black "Massarotto, Dieferson Flori"]
[Result "1/2-1/2"]
[ECO "B02"]
[WhiteElo "2017"]
[PlyCount "19"]
[EventDate "2016.05.20"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 e6 3. f4 a6 4. Nf3 Nc6 5. g3 d5 6. d3 Be7 7. Bg2 Nf6 8. 0-0 0-0 9. e5 Nd7 10. h3 1/2-1/2

[Event "Sao Bento do Sul U2050 1st"]
[Site "Sao Bento do Sul"]
[Date "2016.05.21"]
[Round "3.5"]
[White "Massarotto, Dieferson Flori"]
[Black "Dalanhol, Joao Vitor"]
[Result "1-0"]
[ECO "B86"]
[BlackElo "1891"]
[PlyCount "49"]
[EventDate "2016.05.20"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bc4 e6 7. Bb3 Nbd7 8. 0-0 Nc5 9. Re1 Qc7 10. f4 Be7 11. e5 Nfd7 12. Qh5 0-0 13. Re3 g6 14. Qh6 Rd8 15. Rh3 Nf8 16. Nf3 Nxb3 17. axb3 d5 18. Be3 Bd7 19. f5 gxf5 20. Re1 d4 21. Bg5 Bxg5 22. Nxg5 dxc3 23. Nxh7 Qc5+ 24. Kh1 Nxh7 25. Rg3+ 1-0

[Event "Sao Bento do Sul U2050 1st"]
[Site "Sao Bento do Sul"]
[Date "2016.05.21"]
[Round "5.2"]
[White "Massarotto, Dieferson Flori"]
[Black "Hille, Willian Henrique"]
[Result "0-1"]
[ECO "B23"]
[BlackElo "1895"]
[PlyCount "43"]
[EventDate "2016.05.20"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. f4 e6 4. Nf3 d5 5. Bb5 Nf6 6. Bxc6+ bxc6 7. d3 Ba6 8. e5 d4 9. exf6 dxc3 10. b3 gxf6 11. Qe2 Qd5 12. Be3 Bd6 13. Qf2 Kd7 14. 0-0 Rhg8 15. Rae1 Rg4 16. Re2 Rag8 17. Qe1 Bxf4 18. Bxf4 Rxf4 19. Kh1 Kc8 20. Qxc3 Bb7 21. Qd2 Qf5 22. Ref2 0-1

[Event "Sao Bento do Sul U2050 1st"]
[Site "Sao Bento do Sul"]
[Date "2016.05.20"]
[Round "1.13"]
[White "Liebl, Livia"]
[Black "Massarotto, Dieferson Flori"]
[Result "0-1"]
[ECO "A44"]
[WhiteElo "1519"]
[PlyCount "104"]
[EventDate "2016.05.20"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. d4 c5 2. d5 d6 3. c4 e5 4. Nc3 f5 5. f3 Qh4+ 6. g3 Qxc4 7. e4 Qb4 8. Nge2 fxe4 9. fxe4 Nf6 10. Bg2 Be7 11. 0-0 0-0 12. Qc2 Qb6 13. Bd2 Bg4 14. Rae1 Nbd7 15. h3 Bh5 16. Kh2 a6 17. Nd1 Qc7 18. Ne3 b5 19. Nf5 Nb6 20. Ba5 Rab8 21. a3 Qd7 22. Bxb6 Rxb6 23. Bf3 Bxf3 24. Rxf3 b4 25. g4 bxa3 26. bxa3 Rfb8 27. Nfg3 Rb2 28. Qc1 Qb5 29. Kh1 Nxe4 30. Nxe4 Rxe2 31. Re3 Rxe3 32. Qxe3 Qb3 33. Qxb3 Rxb3 34. Kg2 Rxa3 35. Rd1 a5 36. Rd2 a4 37. Kh2 Rb3 38. Ra2 a3 39. Nd2 Rb2 40. Rxb2 axb2 41. Kg2 Bg5 42. Nb1 Kf7 43. Kf3 Kg6 44. Ke4 Bc1 45. Kf3 Kg5 46. Kg3 Bf4+ 47. Kg2 Kh4 48. Nc3 Bd2 49. Nb1 Bb4 50. Kf2 Kxh3 51. Kf3 Kh4 52. Kf2 Kxg4 0-1

[Event "Sao Bento do Sul U2050 1st"]
[Site "Sao Bento do Sul"]
[Date "2016.05.20"]
[Round "2.11"]
[White "Massarotto, Dieferson Flori"]
[Black "Hille, Waltercler"]
[Result "1-0"]
[ECO "B23"]
[BlackElo "1963"]
[PlyCount "48"]
[EventDate "2016.05.20"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 e6 3. f4 a6 4. Nf3 d5 5. d3 dxe4 6. dxe4 Qxd1+ 7. Nxd1 Nf6 8. Be2 b5 9. a4 b4 10. Be3 Nc6 11. Nf2 Na5 12. b3 Bb7 13. Bd3 Rc8 14. Nd2 g6 15. 0-0 Bg7 16. Rad1 0-0 17. Rfe1 Rfd8 18. Kf1 Re8 19. g4 h5 20. g5 Ng4 21. Nxg4 hxg4 22. e5 Re7 23. Kf2 Bf8 24. Kg3 Rec7 1-0

[Event "Petropolis op"]
[Site "Petropolis"]
[Date "2012.01.29"]
[Round "6"]
[White "Massarotto, Dieferson Flori"]
[Black "Martins, Anderson Donay"]
[Result "0-1"]
[ECO "B50"]
[WhiteElo "1828"]
[BlackElo "1942"]
[PlyCount "76"]
[EventDate "2012.01.27"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 146 Extra"]
[Source "ChessBase"]
[SourceDate "2012.02.29"]
[SourceVersion "1"]
[SourceVersionDate "2012.02.29"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. c3 Nf6 4. Bd3 Nc6 5. 0-0 g6 6. Bc2 Bg7 7. Re1 0-0 8. d3 h6 9. Be3 Ng4 10. Bf4 e5 11. Bd2 f5 12. h3 fxe4 13. Rxe4 Nf6 14. Rh4 Nh5 15. Re4 d5 16. Re1 Qf6 17. Bb3 Be6 18. Be3 d4 19. Bxe6+ Qxe6 20. cxd4 cxd4 21. Bd2 Rf7 22. Na3 Raf8 23. Re4 Qd7 24. Qe2 Kh7 25. Rf1 Nd8 26. Nxe5 Bxe5 27. Rxe5 Ng3 28. fxg3 Rxf1+ 29. Kh2 Nc6 30. Re6 Qd5 31. Bf4 Rf2 32. Qxf2 Qxe6 33. Qc2 Rf7 34. Nc4 g5 35. Bc1 Qe1 36. Nd2 Ne5 37. Ne4 Rf1 38. Qc7+ Nf7 0-1

[Event "Petropolis op"]
[Site "Petropolis"]
[Date "2012.01.29"]
[Round "5"]
[White "Silva, Eduardo Munoa"]
[Black "Massarotto, Dieferson Flori"]
[Result "1-0"]
[ECO "A87"]
[WhiteElo "2157"]
[BlackElo "1828"]
[PlyCount "99"]
[EventDate "2012.01.27"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 146 Extra"]
[Source "ChessBase"]
[SourceDate "2012.02.29"]
[SourceVersion "1"]
[SourceVersionDate "2012.02.29"]
[SourceQuality "1"]

1. d4 f5 2. Nf3 Nf6 3. g3 g6 4. Bg2 Bg7 5. 0-0 0-0 6. c4 d6 7. Nc3 Nh5 8. h3 Nc6 9. e4 fxe4 10. Nxe4 e5 11. dxe5 Nxe5 12. Nxe5 Bxe5 13. Qb3 Kh8 14. Bg5 Qe8 15. Bh6 Ng7 16. Rad1 Bf5 17. Rfe1 Bxe4 18. Rxe4 Qf7 19. Re2 Rab8 20. Be3 b6 21. f4 Bf6 22. Bf2 Rbe8 23. Rde1 Rxe2 24. Rxe2 Re8 25. Qd3 Rxe2 26. Qxe2 Qe6 27. Qxe6 Nxe6 28. b3 Kg7 29. Kf1 Nd4 30. Be4 Kf7 31. Ke1 Nf5 32. Ke2 Ke6 33. Bd5+ Kd7 34. Bg8 h6 35. Bf7 g5 36. Kf3 gxf4 37. gxf4 Ke7 38. Bd5 Bb2 39. Kg4 Kf6 40. Be4 Nd4 41. Be3 Ne2 42. Bd3 Bc1 43. Kf3 Bxe3 44. Kxe3 Ng3 45. b4 Nf5+ 46. Bxf5 Kxf5 47. b5 h5 48. Kf3 Ke6 49. Ke4 Kf6 50. h4 1-0

[Event "Petropolis op"]
[Site "Petropolis"]
[Date "2012.01.28"]
[Round "4"]
[White "Massarotto, Dieferson Flori"]
[Black "Flack, Kauan Andrei"]
[Result "1-0"]
[ECO "B02"]
[WhiteElo "1828"]
[BlackElo "1706"]
[PlyCount "68"]
[EventDate "2012.01.27"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 146 Extra"]
[Source "ChessBase"]
[SourceDate "2012.02.29"]
[SourceVersion "1"]
[SourceVersionDate "2012.02.29"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. Nc3 Nxc3 4. dxc3 e6 5. Nf3 Be7 6. Bd3 d6 7. 0-0 dxe5 8. Nxe5 Nd7 9. Nxd7 Bxd7 10. Be3 Bf6 11. Qh5 Bc6 12. Rfd1 Qd5 13. Qh3 0-0-0 14. Bxa7 g5 15. Be2 Qf5 16. Qxf5 exf5 17. Bd4 Bxd4 18. cxd4 Rhe8 19. Rd2 Re7 20. f3 h5 21. Kf2 Rg8 22. Bd3 Bd7 23. Re1 Rxe1 24. Kxe1 g4 25. Be2 f4 26. d5 g3 27. h4 Rg6 28. Rd4 Rf6 29. Bd3 c6 30. dxc6 Bxc6 31. Be4 Re6 32. Kf1 Bxe4 33. Rxe4 Kd7 34. Ke2 Kc6 1-0

[Event "Petropolis op"]
[Site "Petropolis"]
[Date "2012.01.28"]
[Round "3"]
[White "Roselli Mailhe, Bernardo"]
[Black "Massarotto, Dieferson Flori"]
[Result "1-0"]
[ECO "A81"]
[WhiteElo "2421"]
[BlackElo "1828"]
[PlyCount "61"]
[EventDate "2012.01.27"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 146 Extra"]
[Source "ChessBase"]
[SourceDate "2012.02.29"]
[SourceVersion "1"]
[SourceVersionDate "2012.02.29"]
[SourceQuality "1"]

1. d4 f5 2. g3 Nf6 3. Bg2 g6 4. Nf3 Bg7 5. 0-0 0-0 6. b3 d5 7. c4 c6 8. Ba3 Re8 9. Nc3 Nbd7 10. Rc1 Nf8 11. Qd3 Ne6 12. b4 a6 13. Bb2 Rf8 14. a4 Bh6 15. e3 Ng5 16. Ne5 Nf7 17. b5 Qd6 18. bxc6 bxc6 19. Nxc6 e6 20. Nxd5 exd5 21. cxd5 Nxd5 22. Bxd5 Re8 23. Qb3 Be6 24. Bxe6 Rxe6 25. Ba3 Qd7 26. d5 Re4 27. d6 Kh8 28. Nb8 Rxb8 29. Qxb8+ Nd8 30. Rc7 Qe8 31. Re7 1-0

[Event "Petropolis op"]
[Site "Petropolis"]
[Date "2012.01.27"]
[Round "1.5"]
[White "Bueno, Alfeu Varela Jr"]
[Black "Massarotto, Dieferson Flori"]
[Result "0-1"]
[ECO "B23"]
[WhiteElo "2305"]
[BlackElo "1828"]
[PlyCount "40"]
[EventDate "2012.01.27"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. f4 e6 4. Nf3 Nge7 5. Bb5 g6 6. 0-0 Bg7 7. d3 0-0 8. Bxc6 Nxc6 9. f5 exf5 10. exf5 d5 11. fxg6 fxg6 12. Bg5 Qa5 13. Nxd5 Bg4 14. Ne3 Bxf3 15. Rxf3 Bxb2 16. Rb1 Qxa2 17. Rh3 Rf7 18. Nc4 Bd4+ 19. Kh1 Raf8 20. Bh6 Qxb1 0-1

[Event "Petropolis op"]
[Site "Petropolis"]
[Date "2012.01.27"]
[Round "2"]
[White "Massarotto, Dieferson Flori"]
[Black "Fonseca, Luis Ernesto Serra"]
[Result "1-0"]
[ECO "C78"]
[WhiteElo "1828"]
[BlackElo "2059"]
[PlyCount "71"]
[EventDate "2012.01.27"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 146 Extra"]
[Source "ChessBase"]
[SourceDate "2012.02.29"]
[SourceVersion "1"]
[SourceVersionDate "2012.02.29"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. d3 Bc5 6. 0-0 b5 7. Bb3 d6 8. Bg5 Na5 9. c3 Nxb3 10. Qxb3 h6 11. Bh4 g5 12. Bg3 Nh5 13. d4 exd4 14. cxd4 Bb6 15. Nbd2 Bb7 16. h3 Nxg3 17. fxg3 d5 18. Rae1 0-0 19. e5 Qd7 20. Qd3 Rae8 21. Nh2 h5 22. Ndf3 Qe7 23. Kh1 Bc8 24. h4 gxh4 25. gxh4 f5 26. exf6 Qxf6 27. Ng5 Bf5 28. Qf3 Rxe1 29. Rxe1 Qxd4 30. Qxh5 Qg7 31. Ne6 Qe7 32. Nf3 Bxe6 33. Qg6+ Qg7 34. Qxe6+ Qf7 35. Qg4+ Qg7 36. Qh5 1-0

[Event "Pan American U18"]
[Site "Bento Goncalves"]
[Date "2010.08.07"]
[Round "9"]
[White "Tello Chavez, Hermes A"]
[Black "Massarotto, Dieferson Flori"]
[Result "1-0"]
[ECO "A45"]
[WhiteElo "1925"]
[PlyCount "66"]
[EventDate "2010.08.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]

1. d4 Nf6 2. Bg5 h6 3. Bxf6 exf6 4. e3 b6 5. Nf3 Bb7 6. Bd3 Nc6 7. a3 g6 8. c4 Bg7 9. Nc3 d6 10. b4 Qd7 11. Rc1 a5 12. b5 Ne7 13. h3 f5 14. Na4 Be4 15. Bxe4 fxe4 16. Nd2 f5 17. Qb3 Rb8 18. Rb1 0-0 19. c5+ Kh8 20. cxb6 cxb6 21. g3 d5 22. h4 Rb7 23. Rc1 f4 24. gxf4 Qg4 25. Nf1 Qf3 26. Rh2 Nf5 27. Nd2 Nxd4 28. exd4 Qxf4 29. Qg3 Bxd4 30. Qxf4 Rxf4 31. Nb3 Be5 32. Rh3 Bd6 33. Nd4 Bxa3 1-0

[Event "Pan American U18"]
[Site "Bento Goncalves"]
[Date "2010.08.06"]
[Round "7"]
[White "Garcia Quiroz, Omar Alejandro"]
[Black "Massarotto, Dieferson Flori"]
[Result "1/2-1/2"]
[ECO "A10"]
[WhiteElo "1891"]
[PlyCount "54"]
[EventDate "2010.08.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]

1. c4 f5 2. Nc3 Nf6 3. d3 Nc6 4. e4 d6 5. Bg5 g6 6. f4 Bg7 7. Nf3 e5 8. Qd2 Be6 9. 0-0-0 Qd7 10. Nd5 0-0 11. Bxf6 Bxf6 12. g3 Bg7 13. h4 fxe4 14. dxe4 Bg4 15. Be2 Bxf3 16. Bxf3 Nd4 17. Bg2 c6 18. fxe5 Bxe5 19. Nf4 Qg4 20. Kb1 b5 21. cxb5 Rab8 22. Qf2 Nxb5 23. Rd2 Nc3+ 24. Kc1 Nxa2+ 25. Kb1 Nc3+ 26. Kc1 Na2+ 27. Kb1 Nc3+ 1/2-1/2

[Event "Pan American U18"]
[Site "Bento Goncalves"]
[Date "2010.08.06"]
[Round "8"]
[White "Massarotto, Dieferson Flori"]
[Black "Dure Gomez, Luis Fernando"]
[Result "1-0"]
[ECO "E57"]
[PlyCount "50"]
[EventDate "2010.08.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Nf6 3. c4 c6 4. d4 cxd5 5. Nc3 e6 6. Nf3 Ne4 7. Bd3 Nxc3 8. bxc3 Be7 9. cxd5 exd5 10. Qc2 Nc6 11. 0-0 h6 12. Bf4 a6 13. Rab1 b5 14. a4 Na7 15. Rfe1 0-0 16. axb5 Nxb5 17. Bxb5 axb5 18. Rxb5 Ba6 19. Rb2 Bd6 20. Bxd6 Qxd6 21. Ra2 Bc4 22. Rxa8 Rxa8 23. Ne5 Re8 24. Qd2 Qc7 25. Nxc4 Qxc4 1-0

[Event "Pan American U18"]
[Site "Bento Goncalves"]
[Date "2010.08.05"]
[Round "6"]
[White "Massarotto, Dieferson Flori"]
[Black "Noronha, Natanael Muana C"]
[Result "1-0"]
[ECO "C01"]
[PlyCount "65"]
[EventDate "2010.08.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Nf3 c6 5. c4 dxc4 6. Bxc4 Nf6 7. Qb3 Nd5 8. 0-0 Be7 9. Nc3 0-0 10. Nxd5 cxd5 11. Bxd5 Nc6 12. Bd2 Bf6 13. Bc3 Ne7 14. Bc4 b6 15. Ne5 Bxe5 16. dxe5 Bb7 17. Rad1 Qc7 18. e6 fxe6 19. Bxe6+ Kh8 20. f3 Rad8 21. Bb4 Rxd1 22. Rxd1 Rd8 23. Bxe7 Qxe7 24. Rxd8+ Qxd8 25. Bc4 Qd2 26. Bf1 Bd5 27. Qa3 Qd4+ 28. Kh1 Qf2 29. Qa6 Bxa2 30. h3 Qxb2 31. Qxa7 Qb1 32. Qa6 h6 33. Kh2 1-0

[Event "Pan American U18"]
[Site "Bento Goncalves"]
[Date "2010.08.05"]
[Round "5"]
[White "Sorgato, Tobias"]
[Black "Massarotto, Dieferson Flori"]
[Result "0-1"]
[ECO "A08"]
[PlyCount "80"]
[EventDate "2010.08.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]

1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. 0-0 Nf6 5. d3 e5 6. e4 Bg4 7. exd5 Nxd5 8. Re1 Be7 9. Bd2 0-0 10. Nc3 Nf6 11. Ne4 Qd7 12. Nxf6+ Bxf6 13. Bc3 Rab8 14. Qd2 Rfe8 15. Ng5 b5 16. b3 Rbc8 17. Ne4 Be7 18. f3 Bh3 19. Bxh3 Qxh3 20. Nf2 Qf5 21. Kg2 Nd4 22. Bxd4 cxd4 23. Re2 Bg5 24. Qa5 Qd7 25. Ne4 Be3 26. Qb4 Rc7 27. Nd6 Rb8 28. a4 a5 29. Qxa5 Qxd6 30. axb5 g6 31. c4 Rcc8 32. h3 f5 33. Ra4 f4 34. g4 Qf6 35. Qe1 e4 36. dxe4 d3 37. Rxe3 fxe3 38. Qxe3 Qb2+ 39. Kg3 d2 40. Qe2 Rd8 0-1

[Event "Pan American U18"]
[Site "Bento Goncalves"]
[Date "2010.08.04"]
[Round "4"]
[White "Massarotto, Dieferson Flori"]
[Black "Santiago, Yago de Moura"]
[Result "0-1"]
[ECO "B23"]
[BlackElo "2303"]
[PlyCount "82"]
[EventDate "2010.08.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. f4 g6 4. Nf3 Bg7 5. Bc4 e6 6. 0-0 Nge7 7. e5 a6 8. Ne4 d5 9. exd6 Nf5 10. d3 Nxd6 11. Bb3 b6 12. Nxd6+ Qxd6 13. Kh1 0-0 14. a3 Bb7 15. Qe1 Nd4 16. Nxd4 Bxd4 17. Qg3 b5 18. Rb1 Rac8 19. Be3 Bg7 20. Rfd1 Rfd8 21. Qg4 Qc6 22. c3 Rd6 23. Rd2 Rcd8 24. Rbd1 a5 25. Qe2 Ba6 26. Qf2 Rc8 27. h3 Bf8 28. Ba2 Rd7 29. Bb1 Rcd8 30. Qg3 b4 31. axb4 cxb4 32. Bd4 Rxd4 33. cxd4 Rxd4 34. Rc2 Qd6 35. Rf2 Bb7 36. h4 h5 37. Bc2 Bh6 38. Rdf1 Bc6 39. Qe3 a4 40. Qe5 Qxe5 41. fxe5 Rxh4+ 0-1

[Event "Pan American U18"]
[Site "Bento Goncalves"]
[Date "2010.08.03"]
[Round "2"]
[White "Bambino, Marcello Augusto"]
[Black "Massarotto, Dieferson Flori"]
[Result "1-0"]
[ECO "A46"]
[WhiteElo "1963"]
[PlyCount "72"]
[EventDate "2010.08.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 d6 3. Nc3 c6 4. Bg5 Bf5 5. Bxf6 gxf6 6. e4 Bg4 7. h3 Bxf3 8. Qxf3 Qb6 9. 0-0-0 h5 10. Bc4 Nd7 11. Rhe1 e6 12. Kb1 0-0-0 13. h4 Kb8 14. Ne2 c5 15. c3 Qa5 16. Bb3 Be7 17. Nf4 a6 18. d5 e5 19. Nxh5 b5 20. Ng3 c4 21. Bc2 Nc5 22. Nf5 Rhe8 23. h5 Ka8 24. h6 Rb8 25. a3 Na4 26. h7 Nxc3+ 27. Qxc3 b4 28. axb4 Rxb4 29. Nxe7 Rxe7 30. h8Q+ Ka7 31. Qc8 Reb7 32. Qe3+ R7b6 33. Qc7+ Ka8 34. Qexb6 Rxb6 35. Qxc4 Ka7 36. Rh1 Qa3 1-0

[Event "Pan American U18"]
[Site "Bento Goncalves"]
[Date "2010.08.03"]
[Round "3"]
[White "Barreto, Gary"]
[Black "Massarotto, Dieferson Flori"]
[Result "1-0"]
[ECO "E91"]
[WhiteElo "1858"]
[PlyCount "77"]
[EventDate "2010.08.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]

1. d4 d6 2. Nf3 Nf6 3. c4 g6 4. Nc3 Bg7 5. e4 Bg4 6. Be2 c6 7. 0-0 0-0 8. Be3 Ne8 9. Qd2 Nd7 10. Rad1 Qc7 11. h3 Bxf3 12. Bxf3 a6 13. Rfe1 b5 14. cxb5 axb5 15. Rc1 Qb6 16. e5 b4 17. Ne2 d5 18. e6 fxe6 19. Bg4 Ndf6 20. Bxe6+ Kh8 21. Bg4 Rxa2 22. Qc2 Nxg4 23. hxg4 Ra6 24. Ra1 Nd6 25. Rxa6 Qxa6 26. b3 Qb7 27. Rc1 Rc8 28. Nf4 Qd7 29. Nd3 Nb5 30. Nxb4 Nxd4 31. Bxd4 Bxd4 32. Nxc6 Qxg4 33. b4 Qf4 34. Rd1 Rxc6 35. Rxd4 Rxc2 36. Rxf4 Rc4 37. Rxc4 dxc4 38. Kf1 Kg7 39. b5 1-0

[Event "Pan American U18"]
[Site "Bento Goncalves"]
[Date "2010.08.02"]
[Round "1"]
[White "Massarotto, Dieferson Flori"]
[Black "Perez Gormaz, Matias Ariel"]
[Result "0-1"]
[ECO "B23"]
[BlackElo "2077"]
[PlyCount "48"]
[EventDate "2010.08.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 a6 3. a4 Nc6 4. f4 g6 5. Nf3 Bg7 6. Bc4 e6 7. 0-0 Nge7 8. d3 d5 9. Bb3 Na5 10. Ba2 0-0 11. Qe1 c4 12. Qh4 Nec6 13. Qh3 Nb4 14. Bb1 cxd3 15. cxd3 Nb3 16. Ra3 Nxc1 17. Rxc1 Qb6+ 18. Kh1 Qe3 19. Re1 Qxf4 20. e5 Nc6 21. Ne2 Qb4 22. d4 f6 23. Nf4 fxe5 24. Nxg6 Qxe1+ 0-1

[Event "Braco do NorteTSC"]
[Site "Braco do Norte"]
[Date "2008.08.??"]
[Round "3"]
[White "Barros, Fernando So"]
[Black "Massarotto, Dieferson Flori"]
[Result "1-0"]
[ECO "E65"]
[PlyCount "49"]
[EventDate "2008.08.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. Nf3 d6 2. d4 g6 3. g3 Nf6 4. Bg2 Bg7 5. c4 c5 6. 0-0 0-0 7. Nc3 Nbd7 8. e4 cxd4 9. Nxd4 Ne5 10. b3 Bd7 11. Bb2 Qc8 12. Qe2 Bh3 13. Rfd1 Bxg2 14. Kxg2 Bh6 15. f4 Bxf4 16. gxf4 Nh5 17. Nd5 Qd7 18. fxe5 Rae8 19. Nf5 f6 20. e6 Qxe6 21. Qg4 Kh8 22. Nc7 gxf5 23. Nxe6 fxg4 24. Nxf8 Rxf8 25. Rf1 1-0

[Event "Braco do NorteTSC"]
[Site "Braco do Norte"]
[Date "2008.08.??"]
[Round "2"]
[White "Cordioli, Jairo Ribeiro"]
[Black "Massarotto, Dieferson Flori"]
[Result "1-0"]
[ECO "A21"]
[WhiteElo "1746"]
[PlyCount "68"]
[EventDate "2008.08.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 d6 3. d3 f5 4. g3 Nf6 5. Bg2 Be7 6. Nh3 0-0 7. Nd5 Nxd5 8. cxd5 Nd7 9. 0-0 Kh8 10. f4 exf4 11. Nxf4 Ne5 12. d4 Ng4 13. h3 Nf6 14. Ne6 Bxe6 15. dxe6 Qc8 16. Qb3 c6 17. Rxf5 d5 18. Qe3 c5 19. Kh2 cxd4 20. Qxd4 Qxe6 21. Re5 Qd7 22. Qd3 Bc5 23. Bg5 Bd6 24. Bxf6 Rxf6 25. Rxd5 Qc7 26. Rd1 Be5 27. Rd2 Qc6 28. Rd7 Qc5 29. Qd5 Qxd5 30. R2xd5 Bxb2 31. Rxb7 Bc1 32. Rdd7 Be3 33. Rxg7 Rc8 34. Rxh7+ Kg8 1-0

[Event "Braco do NorteTSC"]
[Site "Braco do Norte"]
[Date "2008.08.??"]
[Round "1"]
[White "Massarotto, Dieferson Flori"]
[Black "Chemin, Vitorio"]
[Result "1-0"]
[ECO "B23"]
[BlackElo "2253"]
[PlyCount "45"]
[EventDate "2008.08.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. f4 d6 4. Nf3 e6 5. Bc4 a6 6. a4 g6 7. 0-0 Nge7 8. Ng5 d5 9. f5 dxc4 10. fxg6 hxg6 11. Nxf7 Qd4+ 12. Kh1 Rh5 13. Qf3 Bg7 14. Ne2 Qd7 15. Ng3 Rh4 16. d3 Nd4 17. Qf2 Nec6 18. Bg5 Nf5 19. exf5 Bd4 20. Qf3 exf5 21. Bxh4 Kxf7 22. Rae1 cxd3 23. Qxd3 1-0

