[Event "Lages-ch"]
[Site "Lages"]
[Date "2014.05.??"]
[Round "4"]
[White "Bastos, Guilherme Exterhott"]
[Black "Demertine, Matheus Leandro"]
[Result "0-1"]
[ECO "B00"]
[WhiteElo "1968"]
[BlackElo "2053"]
[PlyCount "44"]
[EventDate "2014.05.22"]
[EventType "swiss"]
[EventRounds "4"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 b6 2. d4 Bb7 3. Nc3 e6 4. Nf3 Bb4 5. Bd3 Nf6 6. Qe2 d5 7. exd5 Qxd5 8. Bd2 Bxc3 9. Bxc3 Nbd7 10. 0-0 g5 11. Bc4 Qf5 12. Ne5 Nd5 13. Bb5 0-0-0 14. Bxd7+ Rxd7 15. Qg4 Qxg4 16. Nxg4 f6 17. Bd2 h5 18. c4 hxg4 19. cxd5 Bxd5 20. Bc3 Rdh7 21. f3 Rxh2 22. Rad1 g3 0-1

[Event "Lages-ch"]
[Site "Lages"]
[Date "2014.05.??"]
[Round "1"]
[White "Demertine, Matheus Leandro"]
[Black "Bueno, Matheus"]
[Result "1-0"]
[ECO "A01"]
[WhiteElo "2053"]
[PlyCount "59"]
[EventDate "2014.05.22"]
[EventType "swiss"]
[EventRounds "4"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. b3 e5 2. Bb2 Nc6 3. e3 Nf6 4. Bb5 d6 5. d4 exd4 6. Qxd4 Bd7 7. Bxc6 Bxc6 8. Nf3 Bxf3 9. gxf3 Be7 10. Rg1 c5 11. Qc3 b6 12. Nd2 b5 13. a3 Qc7 14. Rxg7 Rg8 15. Rxg8+ Nxg8 16. Qd3 Nh6 17. Qxh7 0-0-0 18. Qxh6 b4 19. a4 Bf8 20. Qf4 Be7 21. 0-0-0 Rh8 22. Bxh8 Qd8 23. Bb2 c4 24. Nxc4 Bg5 25. Nxd6+ Kb8 26. Qe5 Qf6 27. Qb5+ Kc7 28. Qb7+ Kd8 29. Qc8+ Ke7 30. Qe8# 1-0

[Event "Lages-ch"]
[Site "Lages"]
[Date "2014.05.??"]
[Round "3"]
[White "Demertine, Matheus Leandro"]
[Black "Machado, Jonatan"]
[Result "1-0"]
[ECO "A01"]
[WhiteElo "2053"]
[BlackElo "1669"]
[PlyCount "57"]
[EventDate "2014.05.22"]
[EventType "swiss"]
[EventRounds "4"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. b3 e5 2. Bb2 Nc6 3. e3 Nf6 4. Bb5 d6 5. d4 Bd7 6. dxe5 Nxe5 7. Bxd7+ Qxd7 8. Nf3 Nxf3+ 9. gxf3 Be7 10. Qd4 Qf5 11. Nd2 0-0 12. Rg1 c5 13. Qc3 d5 14. 0-0-0 Qe6 15. Rg5 d4 16. Qc4 Qxc4 17. Nxc4 b5 18. Nd2 h6 19. Rg2 dxe3 20. Ne4 e2 21. Rdg1 e1Q+ 22. Rxe1 Kh7 23. Ng5+ hxg5 24. Rxe7 Nd5 25. Rd7 Nb6 26. Rc7 c4 27. Rxg5 f6 28. Rg3 Kh6 29. Bxf6 1-0

[Event "Lages-ch"]
[Site "Lages"]
[Date "2014.05.??"]
[Round "2"]
[White "Straubell, Sergio Silveira"]
[Black "Demertine, Matheus Leandro"]
[Result "0-1"]
[ECO "B00"]
[BlackElo "2053"]
[PlyCount "102"]
[EventDate "2014.05.22"]
[EventType "swiss"]
[EventRounds "4"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 b6 2. d4 Bb7 3. Nc3 e6 4. Be3 Bb4 5. Qd3 Qh4 6. e5 Ba6 7. Qd2 Bxf1 8. Kxf1 f6 9. Nf3 Qh5 10. a3 Bxc3 11. Qxc3 Nc6 12. h3 Nge7 13. g4 Qf7 14. Ke2 Rf8 15. Raf1 Nd5 16. Qd3 fxe5 17. Nxe5 Nxe5 18. dxe5 Qf3+ 19. Ke1 Nf4 20. Bxf4 Qxf4 21. Qe3 Qa4 22. Qd3 0-0-0 23. b4 d6 24. Qb3 Qxb3 25. cxb3 Rf3 26. exd6 Rxd6 27. Ke2 Rxb3 28. Ra1 Rdd3 29. Rh2 Rxa3 30. Rxa3 Rxa3 31. h4 Rb3 32. g5 Rxb4 33. Rh3 Rf4 34. Ke3 e5 35. f3 a5 36. h5 a4 37. Rh1 b5 38. h6 g6 39. Rf1 a3 40. Rc1 Rc4 41. Rxc4 bxc4 42. Ke4 a2 43. Kxe5 a1Q+ 44. Ke6 Qh8 45. f4 c3 46. f5 c2 47. fxg6 hxg6 48. Kf7 c1Q 49. Kxg6 Qc2+ 50. Kf7 Qf5+ 51. Ke7 Qhf8# 0-1

[Event "Catarinense-ch U20"]
[Site "Lacerdapolis"]
[Date "2012.05.06"]
[Round "6"]
[White "Demertine, Matheus Leandro"]
[Black "Barreiros da Silva, Denison Klein"]
[Result "0-1"]
[ECO "A01"]
[WhiteElo "1909"]
[BlackElo "1918"]
[PlyCount "87"]
[EventDate "2012.05.04"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 148 Extra"]
[Source "ChessBase"]
[SourceDate "2012.06.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.06.22"]
[SourceQuality "1"]

1. b3 e5 2. Bb2 Nc6 3. e3 d6 4. Nf3 Nf6 5. Bb5 Bd7 6. d3 a6 7. Bxc6 Bxc6 8. Nbd2 Be7 9. e4 0-0 10. Qe2 Bd7 11. d4 exd4 12. Nxd4 Re8 13. 0-0 Bf8 14. Qf3 Qe7 15. Rae1 Qe5 16. Qe2 Bg4 17. f3 Bh5 18. g4 Qg5 19. h3 Nd5 20. f4 Nxf4 21. Qe3 Bxg4 22. Qxf4 Qxf4 23. Rxf4 Bxh3 24. Kh2 Bd7 25. Rg1 g6 26. N4f3 Bg7 27. Bxg7 Kxg7 28. Rf1 Re7 29. Kg3 h6 30. Nh2 Rae8 31. Ng4 f5 32. Ne3 c6 33. Nec4 g5 34. Rxf5 Bxf5 35. exf5 Rf8 36. Nxd6 Re3+ 37. Kg4 Rd8 38. N2e4 Re2 39. c4 Rxa2 40. c5 Re2 41. Rf3 Rc2 42. Nxb7 Rd4 43. Re3 Rc1 44. Na5 0-1

[Event "Catarinense-ch U20"]
[Site "Lacerdapolis"]
[Date "2012.05.06"]
[Round "5"]
[White "Demertine, Matheus Leandro"]
[Black "Dos Reis, Nicolas Rodrigues"]
[Result "1-0"]
[ECO "A02"]
[WhiteElo "1909"]
[BlackElo "1895"]
[PlyCount "105"]
[EventDate "2012.05.04"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 148 Extra"]
[Source "ChessBase"]
[SourceDate "2012.06.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.06.22"]
[SourceQuality "1"]

1. b3 g6 2. Bb2 Nf6 3. f4 Bg7 4. Nf3 0-0 5. e3 d6 6. Be2 Nc6 7. Bb5 e5 8. Bxc6 bxc6 9. fxe5 Ng4 10. 0-0 Nxe5 11. Nxe5 dxe5 12. e4 Be6 13. d3 f5 14. Nd2 Qd6 15. Kh1 Rae8 16. a4 Rf7 17. Ba3 Qd8 18. Qe1 h6 19. Nf3 Kh7 20. Qa5 fxe4 21. dxe4 Qc8 22. Qxa7 Rf4 23. Rae1 Bg4 24. Qe3 Rd8 25. Be7 Re8 26. Bh4 Bxf3 27. Bg3 Bxg2+ 28. Kxg2 Rff8 29. Qc5 Qe6 30. a5 h5 31. Qc3 Qg4 32. h3 Qe6 33. b4 Bf6 34. Bf2 Bg5 35. Bc5 Rg8 36. Qb3 Qxb3 37. cxb3 Bf4 38. Rd1 Rd8 39. Be7 Rde8 40. Bc5 Rd8 41. Be7 Rde8 42. Bc5 Rd8 43. a6 Ra8 44. a7 g5 45. Rd7+ Rg7 46. Rfd1 Rc8 47. Rxg7+ Kxg7 48. Rd7+ Kg6 49. Rxc7 Rxc7 50. a8Q g4 51. Qe8+ Rf7 52. Qe6+ Kg7 53. hxg4 1-0

[Event "Catarinense-ch U20"]
[Site "Lacerdapolis"]
[Date "2012.05.05"]
[Round "3"]
[White "Demertine, Matheus Leandro"]
[Black "Da Silva, Rafael Fleck"]
[Result "0-1"]
[ECO "A01"]
[WhiteElo "1909"]
[BlackElo "1927"]
[PlyCount "82"]
[EventDate "2012.05.04"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 148 Extra"]
[Source "ChessBase"]
[SourceDate "2012.06.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.06.22"]
[SourceQuality "1"]

1. b3 a5 2. a4 e6 3. Bb2 Nf6 4. e3 b6 5. f4 Na6 6. Nf3 Nc5 7. Be2 Bb7 8. 0-0 Be7 9. Qe1 h6 10. Na3 Rg8 11. Ne5 Rc8 12. Bb5 c6 13. Bc4 d6 14. Nf3 Nfe4 15. Nd4 d5 16. Be2 Bf6 17. f5 e5 18. Nf3 Nd7 19. d4 Qc7 20. Bd3 Ng5 21. e4 Nxf3+ 22. Rxf3 exd4 23. exd5+ Kd8 24. d6 Qxd6 25. Nc4 Qc7 26. c3 b5 27. Na3 dxc3 28. Bc1 Re8 29. Qf1 Ne5 30. Rh3 Qb6+ 31. Be3 Qc7 32. axb5 c5 33. b6 Qxb6 34. Nc4 Nxc4 35. Bxc4 Rc7 36. Rd1+ Kc8 37. Qd3 Rd8 38. Qc2 Rcd7 39. Re1 Bd4 40. Bf1 Re7 41. Bxd4 Rxe1 0-1

[Event "Catarinense-ch U20"]
[Site "Lacerdapolis"]
[Date "2012.05.05"]
[Round "4"]
[White "Franca, Willian Bento"]
[Black "Demertine, Matheus Leandro"]
[Result "0-1"]
[ECO "A17"]
[BlackElo "1909"]
[PlyCount "91"]
[EventDate "2012.05.04"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 148 Extra"]
[Source "ChessBase"]
[SourceDate "2012.06.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.06.22"]
[SourceQuality "1"]

1. Nf3 b6 2. g3 Bb7 3. Bg2 e6 4. c4 f5 5. 0-0 Nf6 6. b3 Be7 7. Bb2 0-0 8. Nc3 Qe8 9. d3 a6 10. e4 fxe4 11. Ng5 Nc6 12. Ngxe4 Rd8 13. d4 Nxe4 14. Bxe4 Bf6 15. d5 Nd4 16. Re1 e5 17. Ne2 Nxe2+ 18. Qxe2 d6 19. Bc1 Bc8 20. Be3 Kh8 21. b4 Be7 22. a4 Bd7 23. a5 b5 24. c5 dxc5 25. bxc5 Bf5 26. Bg2 Qg6 27. Rad1 Be4 28. Bxe4 Qxe4 29. Qa2 Qb4 30. d6 cxd6 31. Qe6 Rfe8 32. cxd6 Bxd6 33. Qd5 Qxa5 34. Qc6 Qc7 35. Qxa6 Bb4 36. Rxd8 Rxd8 37. Rb1 Qc4 38. Qb6 Rf8 39. Rc1 Bc3 40. Rb1 b4 41. Bc5 Qd3 42. Bxf8 Qxb1+ 43. Kg2 Qe4+ 44. Kf1 Qh1+ 45. Ke2 e4 46. Qb8 0-1

[Event "Catarinense-ch U20"]
[Site "Lacerdapolis"]
[Date "2012.05.04"]
[Round "2"]
[White "Da Silva, Lucas Machado"]
[Black "Demertine, Matheus Leandro"]
[Result "0-1"]
[ECO "A81"]
[WhiteElo "1756"]
[BlackElo "1909"]
[PlyCount "64"]
[EventDate "2012.05.04"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 148 Extra"]
[Source "ChessBase"]
[SourceDate "2012.06.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.06.22"]
[SourceQuality "1"]

1. Nf3 b6 2. g3 Bb7 3. Bg2 e6 4. 0-0 f5 5. d4 Nf6 6. Nc3 Bb4 7. Bd2 0-0 8. a3 Bxc3 9. Bxc3 Qe8 10. e3 d6 11. Nd2 Bxg2 12. Kxg2 Nbd7 13. h3 Qg6 14. Qf3 Ne4 15. Nxe4 fxe4 16. Qg4 Qxg4 17. hxg4 Rf3 18. Rh1 Raf8 19. Raf1 Nf6 20. Be1 Nxg4 21. c4 Rxe3 22. Rh4 Rxe1 23. Rxe1 Nxf2 24. Re2 g5 25. Rh5 Nd3 26. Rxg5+ Kf7 27. Rg4 d5 28. cxd5 exd5 29. Rg5 Ke6 30. Rh5 Rf7 31. Rh6+ Kd7 32. Rc2 Ne1+ 0-1

[Event "Catarinense-ch U20"]
[Site "Lacerdapolis"]
[Date "2012.05.04"]
[Round "1"]
[White "Demertine, Matheus Leandro"]
[Black "Dallagrave, Tainan Marcel"]
[Result "1-0"]
[ECO "A01"]
[WhiteElo "1909"]
[BlackElo "1750"]
[PlyCount "72"]
[EventDate "2012.05.04"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 148 Extra"]
[Source "ChessBase"]
[SourceDate "2012.06.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.06.22"]
[SourceQuality "1"]

1. b3 e5 2. Bb2 Nc6 3. e3 d6 4. Bc4 Nf6 5. d4 exd4 6. exd4 d5 7. Bb5 Bd7 8. Bxc6 Bxc6 9. Qe2+ Qe7 10. Qxe7+ Bxe7 11. Nd2 0-0-0 12. Ngf3 Nd7 13. 0-0 Bf6 14. Rfe1 Rhe8 15. Ne5 Bxe5 16. dxe5 Nf8 17. f4 f6 18. Rf1 Bd7 19. Bd4 a6 20. Rac1 Bf5 21. h3 h5 22. Bf2 Ne6 23. Bh4 Rd7 24. c4 Nd4 25. Kh1 Kb8 26. cxd5 Rxd5 27. Nc4 Be6 28. Ne3 Rd7 29. Rcd1 Nf5 30. Nxf5 Bxf5 31. Rxd7 Bxd7 32. Rd1 Bf5 33. Kg1 b6 34. Kf2 Kb7 35. Kf3 c6 36. Rd6 Be6 1-0

[Event "Catarinense-ch"]
[Site "Piratuba"]
[Date "2012.02.12"]
[Round "7"]
[White "Amorim, Lucio"]
[Black "Demertine, Matheus Leandro"]
[Result "1-0"]
[ECO "B00"]
[WhiteElo "2203"]
[BlackElo "1867"]
[PlyCount "95"]
[EventDate "2012.02.08"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "CBM 147 Extra"]
[Source "ChessBase"]
[SourceDate "2012.04.24"]
[SourceVersion "1"]
[SourceVersionDate "2012.04.24"]
[SourceQuality "1"]

1. e4 b6 2. d4 Bb7 3. Bd3 e6 4. Nf3 c5 5. c3 cxd4 6. cxd4 Nc6 7. Nc3 Nb4 8. 0-0 Nxd3 9. Qxd3 Bb4 10. Bg5 f6 11. Bd2 Bxc3 12. Bxc3 Ne7 13. Bb4 a5 14. Bxe7 Qxe7 15. Rfc1 0-0 16. Rc3 f5 17. e5 g5 18. Nd2 h5 19. Rac1 Bc6 20. Nc4 h4 21. Nxb6 Rab8 22. Nc4 a4 23. b3 g4 24. Nd6 Qg5 25. Rb1 Rb4 26. Rc4 Rfb8 27. Rxb4 Rxb4 28. Qc3 Rb8 29. b4 h3 30. g3 f4 31. Qc1 Qg6 32. b5 fxg3 33. fxg3 Be4 34. Rb2 Rf8 35. Rf2 Bf3 36. Qc2 Qg5 37. Qd2 Qxd2 38. Rxd2 Bg2 39. Rf2 Rb8 40. Rc2 Kg7 41. Rc8 Rb6 42. a3 Bd5 43. Kf2 Kg6 44. Ke3 Bc6 45. bxc6 dxc6 46. Rg8+ Kh5 47. Nf7 Rb3+ 48. Ke4 1-0

[Event "Catarinense-ch"]
[Site "Piratuba"]
[Date "2012.02.11"]
[Round "6"]
[White "Demertine, Matheus Leandro"]
[Black "Florianovitz, Derlei Alex"]
[Result "1-0"]
[ECO "A02"]
[WhiteElo "1867"]
[BlackElo "2128"]
[PlyCount "97"]
[EventDate "2012.02.08"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "CBM 147 Extra"]
[Source "ChessBase"]
[SourceDate "2012.04.24"]
[SourceVersion "1"]
[SourceVersionDate "2012.04.24"]
[SourceQuality "1"]

1. b3 Nf6 2. Bb2 g6 3. e3 Bg7 4. f4 d6 5. Nf3 0-0 6. Bc4 c5 7. 0-0 Nc6 8. a4 b6 9. Qe1 d5 10. Be2 d4 11. Na3 Nd5 12. Bc4 e6 13. Rd1 Bb7 14. Ba1 Qd6 15. Nb5 Qb8 16. Bxd5 exd5 17. exd4 a6 18. Na3 cxd4 19. Qh4 f5 20. Ng5 h6 21. Ne6 Re8 22. Nxg7 Kxg7 23. b4 Qd6 24. b5 Nd8 25. Bxd4+ Kh7 26. Rde1 Nf7 27. bxa6 Bxa6 28. Nb5 Bxb5 29. axb5 Re4 30. c3 Ng5 31. d3 Rxe1 32. Rxe1 Nf7 33. Qe7 Kg8 34. Qb7 Rb8 35. Qc6 Kh7 36. Qxd6 Nxd6 37. Re7+ Kg8 38. Be5 Rd8 39. Rg7+ Kf8 40. Rh7 Nf7 41. Bd4 Ra8 42. Rg7 Ra5 43. Rxg6 Rxb5 44. Rxb6 Ra5 45. Rf6 Ra1+ 46. Kf2 Ra2+ 47. Kf3 Rd2 48. Rxf5 Rxd3+ 49. Ke2 1-0

[Event "Catarinense-ch"]
[Site "Piratuba"]
[Date "2012.02.11"]
[Round "5"]
[White "Dos Santos, Haroldo Cunha Jr"]
[Black "Demertine, Matheus Leandro"]
[Result "1-0"]
[ECO "A84"]
[WhiteElo "2253"]
[BlackElo "1867"]
[PlyCount "49"]
[EventDate "2012.02.08"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "CBM 147 Extra"]
[Source "ChessBase"]
[SourceDate "2012.04.24"]
[SourceVersion "1"]
[SourceVersionDate "2012.04.24"]
[SourceQuality "1"]

1. d4 e6 2. Nf3 f5 3. g3 b6 4. Bg2 Bb7 5. 0-0 Nf6 6. c4 Be7 7. Nc3 0-0 8. d5 Na6 9. Nd4 Qc8 10. e4 Nxe4 11. Nxe4 fxe4 12. Bh3 exd5 13. cxd5 Bf6 14. Nf5 Qe8 15. d6 Bc6 16. Bf4 g5 17. Be3 h5 18. Bd4 e3 19. Bxf6 Rxf6 20. Qd4 Qf7 21. Ne7+ Kh7 22. fxe3 Rf8 23. Nxc6 Rf2 24. e4 Rf6 25. e5 1-0

[Event "Catarinense-ch"]
[Site "Piratuba"]
[Date "2012.02.10"]
[Round "4"]
[White "Demertine, Matheus Leandro"]
[Black "Mafra, Kaiser Luiz"]
[Result "1-0"]
[ECO "A01"]
[WhiteElo "1867"]
[BlackElo "2144"]
[PlyCount "97"]
[EventDate "2012.02.08"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "CBM 147 Extra"]
[Source "ChessBase"]
[SourceDate "2012.04.24"]
[SourceVersion "1"]
[SourceVersionDate "2012.04.24"]
[SourceQuality "1"]

1. b3 e5 2. Bb2 d6 3. e3 Nc6 4. Nf3 e4 5. Nd4 Ne5 6. d3 c5 7. Nb5 a6 8. N5c3 exd3 9. cxd3 Nf6 10. d4 cxd4 11. Qxd4 Be7 12. Bc4 0-0 13. Bd5 Nc6 14. Qd1 Qb6 15. Nd2 Bg4 16. Nc4 Qc7 17. f3 Be6 18. e4 b5 19. Ne3 b4 20. Ne2 Bxd5 21. Nxd5 Nxd5 22. Qxd5 Qb6 23. Rd1 Rfe8 24. Nd4 Rac8 25. Nf5 Bf8 26. Bd4 Nxd4 27. Qxd4 Qb5 28. Ne3 Rc3 29. Nc4 d5 30. Qxd5 Bc5 31. Qd2 f5 32. Qd5+ Kh8 33. Qxf5 Rc2 34. Rd2 Rc1+ 35. Rd1 Rxd1+ 36. Kxd1 Qc6 37. Kc2 Rf8 38. Qd5 Qc8 39. Rd1 a5 40. Kb1 a4 41. Ne5 h6 42. Rc1 axb3 43. axb3 Qe8 44. Qxc5 Kh7 45. Nd3 Qa8 46. Nxb4 Qa3 47. Rc3 Qa8 48. Nc6 Rc8 49. b4 1-0

[Event "Catarinense-ch"]
[Site "Piratuba"]
[Date "2012.02.09"]
[Round "3"]
[White "Cordeiro, Marco Aurelio Zaror"]
[Black "Demertine, Matheus Leandro"]
[Result "1-0"]
[ECO "B00"]
[WhiteElo "2239"]
[BlackElo "1867"]
[PlyCount "51"]
[EventDate "2012.02.08"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "CBM 147 Extra"]
[Source "ChessBase"]
[SourceDate "2012.04.24"]
[SourceVersion "1"]
[SourceVersionDate "2012.04.24"]
[SourceQuality "1"]

1. e4 b6 2. d4 Bb7 3. f3 e6 4. Bd3 d6 5. c4 Nd7 6. Be3 e5 7. Ne2 g6 8. Nbc3 Bg7 9. d5 Nc5 10. Bc2 Ne7 11. b4 Nd7 12. Qd2 f5 13. Bh6 0-0 14. h4 f4 15. Bxg7 Kxg7 16. g3 fxg3 17. h5 Ng8 18. hxg6 hxg6 19. Nxg3 Rxf3 20. Nf5+ Kf8 21. Rh8 Qf6 22. Qh6+ Ke8 23. Rxg8+ Nf8 24. Ba4+ c6 25. dxc6 Bc8 26. Nd5 1-0

[Event "Catarinense-ch"]
[Site "Piratuba"]
[Date "2012.02.09"]
[Round "2"]
[White "Demertine, Matheus Leandro"]
[Black "Reichert, Thiago da Cruz"]
[Result "1-0"]
[ECO "A03"]
[WhiteElo "1867"]
[BlackElo "2029"]
[PlyCount "119"]
[EventDate "2012.02.08"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "CBM 147 Extra"]
[Source "ChessBase"]
[SourceDate "2012.04.24"]
[SourceVersion "1"]
[SourceVersionDate "2012.04.24"]
[SourceQuality "1"]

1. b3 d5 2. e3 Nf6 3. Bb2 g6 4. f4 Bg7 5. Nf3 c5 6. Bb5+ Bd7 7. Bxd7+ Qxd7 8. 0-0 Nc6 9. Ne5 Qd6 10. Nxc6 Qxc6 11. Qf3 0-0 12. d3 b5 13. Nd2 Ne4 14. dxe4 dxe4 15. Qxe4 Qxe4 16. Nxe4 Bxb2 17. Rad1 Rfc8 18. f5 c4 19. Rd7 cxb3 20. axb3 Rxc2 21. Rxe7 Rc1 22. fxg6 Rxf1+ 23. Kxf1 hxg6 24. Rb7 a6 25. Kf2 Rd8 26. Nc5 Rd2+ 27. Kf3 Rd6 28. Ra7 Rc6 29. b4 Rf6+ 30. Ke2 Be5 31. g3 Kg7 32. Rxa6 Bc3 33. Rxf6 Bxf6 34. Kd3 Kh6 35. Ke4 Kg5 36. h3 Be7 37. Kd5 f5 38. Kc6 Kh5 39. Nd3 g5 40. Kd7 Bf8 41. Ke6 f4 42. exf4 gxf4 43. Nxf4+ Kg5 44. Nd5 Bg7 45. Nc7 Bc3 46. Nxb5 Bxb4 47. Nd6 Be1 48. Ne4+ Kh5 49. Nf6+ Kg6 50. g4 Bh4 51. Nd5 Kg5 52. Ke5 Be1 53. Ke4 Bd2 54. Kf3 Kh6 55. Kg2 Kg5 56. Ne7 Bc3 57. Kg3 Be1+ 58. Kf3 Kh4 59. Kg2 Kg5 60. Nd5 1-0

[Event "Catarinense-ch"]
[Site "Piratuba"]
[Date "2012.02.08"]
[Round "1"]
[White "Gieseler, Ronny Knoch"]
[Black "Demertine, Matheus Leandro"]
[Result "1/2-1/2"]
[ECO "A40"]
[WhiteElo "2162"]
[BlackElo "1867"]
[PlyCount "71"]
[EventDate "2012.02.08"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "CBM 147 Extra"]
[Source "ChessBase"]
[SourceDate "2012.04.24"]
[SourceVersion "1"]
[SourceVersionDate "2012.04.24"]
[SourceQuality "1"]

1. Nf3 b6 2. c4 Bb7 3. Nc3 f5 4. d4 e6 5. d5 Bb4 6. dxe6 Bxc3+ 7. bxc3 dxe6 8. Qxd8+ Kxd8 9. Bf4 Na6 10. e3 Nc5 11. Ng5 Ke7 12. Bxc7 Rc8 13. Be5 Nf6 14. Nf3 Rhd8 15. Bd4 Bxf3 16. gxf3 Ncd7 17. f4 g6 18. a4 Nc5 19. Ra2 Nb7 20. Be2 Ne4 21. 0-0 Ned6 22. c5 bxc5 23. Be5 Na5 24. Rb2 Nac4 25. Bxc4 Nxc4 26. Rb7+ Rd7 27. Rfb1 Nxe5 28. fxe5 Rcc7 29. Rb8 Rd8 30. c4 Rxb8 31. Rxb8 Kd7 32. Rh8 Kc6 33. Re8 Kd7 34. Rh8 Kc6 35. Re8 Kd7 36. Rh8 1/2-1/2

[Event "Santa Catarina State-ch sf 57th"]
[Site "Penha"]
[Date "2011.01.30"]
[Round "5"]
[White "De Oliveira Lenzi, Jordao Luiz"]
[Black "Demertine, Matheus Leandro"]
[Result "0-1"]
[ECO "A85"]
[PlyCount "72"]
[EventDate "2011.01.29"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 f5 2. c4 e6 3. Nc3 Nf6 4. Nf3 b6 5. e3 Bb4 6. Bd2 Bb7 7. Bd3 Bxc3 8. Bxc3 0-0 9. Qc2 Qe8 10. 0-0-0 Ne4 11. Bxe4 Bxe4 12. Qe2 Qh5 13. Ng1 Qxe2 14. Nxe2 Bxg2 15. Rhg1 Bf3 16. Rd2 Bxe2 17. Rxe2 d6 18. b4 Nd7 19. d5 Nf6 20. dxe6 Rae8 21. f3 Rxe6 22. Reg2 g6 23. Kd2 Nh5 24. Rg5 Kf7 25. Kd3 Rfe8 26. Bd2 c5 27. a3 Re5 28. b5 d5 29. Rd1 Rd8 30. Bc3 Ree8 31. Re1 d4 32. exd4 Rxe1 33. Bxe1 Rxd4+ 34. Kc3 Nf4 35. Bg3 Ne2+ 36. Kb2 h6 0-1

[Event "Santa Catarina State-ch sf 57th"]
[Site "Penha"]
[Date "2011.01.30"]
[Round "6"]
[White "Demertine, Matheus Leandro"]
[Black "Juliano, Joao Carlos Mazzini"]
[Result "1-0"]
[ECO "A01"]
[PlyCount "57"]
[EventDate "2011.01.29"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. b3 e5 2. Bb2 Nc6 3. e3 d5 4. Bb5 Bd6 5. d4 e4 6. c4 Nf6 7. Nc3 a6 8. cxd5 axb5 9. dxc6 bxc6 10. Qc2 0-0 11. Nxe4 Bf5 12. Nxf6+ Qxf6 13. Qd2 Qg6 14. g3 Rfe8 15. f3 Qe6 16. Kf2 Qe7 17. e4 Bd7 18. Ne2 f5 19. e5 Bb4 20. Bc3 Ba3 21. Rad1 c5 22. d5 Rad8 23. Qc2 Bc8 24. Nf4 c4 25. Kg2 g5 26. Nh5 b4 27. Bd4 c3 28. Nf6+ Kf8 29. Nxe8 1-0

[Event "Santa Catarina State-ch sf 57th"]
[Site "Penha"]
[Date "2011.01.29"]
[Round "3"]
[White "Bastos, Guilherme Exterhott"]
[Black "Demertine, Matheus Leandro"]
[Result "1/2-1/2"]
[ECO "B00"]
[WhiteElo "2024"]
[PlyCount "33"]
[EventDate "2011.01.29"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 b6 2. Nc3 Bb7 3. Nf3 e6 4. a3 Nf6 5. e5 Ne4 6. Nxe4 Bxe4 7. d4 Be7 8. Bd3 Bb7 9. c3 f5 10. exf6 Bxf6 11. Ng5 Bxg5 12. Qh5+ g6 13. Bxg6+ hxg6 14. Qxh8+ Kf7 15. Qh7+ Kf8 16. Qh8+ Kf7 17. Qh7+ 1/2-1/2

[Event "Santa Catarina State-ch sf 57th"]
[Site "Penha"]
[Date "2011.01.29"]
[Round "1"]
[White "Braun, Isadora"]
[Black "Demertine, Matheus Leandro"]
[Result "0-1"]
[ECO "A10"]
[PlyCount "59"]
[EventDate "2011.01.29"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. c4 b6 2. Nc3 f5 3. d4 e6 4. Nf3 Bb4 5. Bd2 Bb7 6. e3 Nf6 7. a3 Bxc3 8. Bxc3 0-0 9. Bd3 Qe8 10. 0-0 Qg6 11. Rc1 d6 12. b4 Nbd7 13. Be2 Ne4 14. d5 e5 15. Bb2 Ndf6 16. Nh4 Qg5 17. g3 f4 18. exf4 exf4 19. Nf3 Qh6 20. Nd4 Bc8 21. Bf3 Ng5 22. Bg2 Bg4 23. Qd3 Nh3+ 24. Kh1 Nd7 25. f3 fxg3 26. Bxh3 Bxh3 27. Rg1 g2+ 28. Rxg2 Bxg2+ 29. Kxg2 Ne5 30. Qf1 0-1

[Event "Santa Catarina State-ch sf 57th"]
[Site "Penha"]
[Date "2011.01.29"]
[Round "2"]
[White "Demertine, Matheus Leandro"]
[Black "Cardoso, Leandro Ubialli"]
[Result "1-0"]
[ECO "A01"]
[PlyCount "53"]
[EventDate "2011.01.29"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. b3 d5 2. e3 e5 3. Bb2 Bd6 4. Nf3 Nd7 5. c4 c6 6. Nc3 Ne7 7. cxd5 Nxd5 8. Nxd5 cxd5 9. Bb5 f6 10. Nh4 a6 11. Qh5+ Ke7 12. Nf5+ Ke6 13. Nxg7+ Ke7 14. Nf5+ Ke6 15. Nh6 Qf8 16. Bxd7+ Bxd7 17. f4 Be8 18. Qh3+ Ke7 19. fxe5 Bxe5 20. Ba3+ Bd6 21. Nf5+ Kd8 22. Nxd6 Qg7 23. Rc1 Bd7 24. Nxb7+ Ke8 25. Qh5+ Qg6 26. Nd6+ Kd8 27. Nf7+ 1-0

[Event "Santa Catarina State-ch sf 57th"]
[Site "Penha"]
[Date "2011.01.29"]
[Round "4"]
[White "Demertine, Matheus Leandro"]
[Black "Menna Barreto, Felipe Kubiaki"]
[Result "0-1"]
[ECO "A01"]
[BlackElo "2167"]
[PlyCount "52"]
[EventDate "2011.01.29"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. b3 c5 2. Bb2 d5 3. e3 Nc6 4. Bb5 Qc7 5. f4 Nf6 6. Nf3 Bg4 7. h3 Bxf3 8. Qxf3 e6 9. 0-0 Be7 10. d3 0-0 11. Bxc6 Qxc6 12. Qg3 c4 13. dxc4 dxc4 14. Bd4 Rfd8 15. f5 Bd6 16. Qf3 Qxf3 17. Rxf3 e5 18. Bb2 Rac8 19. Ba3 e4 20. Rf1 Be5 21. c3 Nd5 22. Kf2 b5 23. bxc4 Rxc4 24. Rd1 Rcc8 25. Rxd5 Rxd5 26. Bb4 Rd1 0-1

[Event "Curitiba op"]
[Site "Curitiba"]
[Date "2010.11.20"]
[Round "4"]
[White "Demertine, Matheus Leandro"]
[Black "Proudian, Armen"]
[Result "0-1"]
[ECO "A03"]
[BlackElo "2104"]
[PlyCount "97"]
[EventDate "2010.11.19"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 139 Extra"]
[Source "ChessBase"]
[SourceDate "2011.01.05"]
[SourceVersion "1"]
[SourceVersionDate "2011.01.05"]
[SourceQuality "1"]

1. b3 Nf6 2. Bb2 d5 3. e3 Nbd7 4. f4 e6 5. Nf3 Bd6 6. Be2 c5 7. 0-0 b6 8. Qe1 Qc7 9. Qg3 0-0 10. Bb5 Kh8 11. Bxd7 Bxd7 12. d3 Bc6 13. Nbd2 Ne8 14. Qh3 Kg8 15. g4 d4 16. Nc4 dxe3 17. Nfe5 e2 18. Rfe1 Bd5 19. g5 f6 20. g6 h6 21. Nxd6 Qxd6 22. Nf7 Qxf4 23. Rxe2 Bf3 24. Qxe6 Qg4+ 25. Qxg4 Bxg4 26. Rg2 Be6 27. Bc1 Bxf7 28. gxf7+ Kxf7 29. Bf4 g5 30. Bg3 Ng7 31. Rf1 Kg6 32. Re2 Rae8 33. Rfe1 Rxe2 34. Rxe2 Nf5 35. c3 Rd8 36. Rd2 h5 37. a3 h4 38. Bf2 a5 39. h3 Ng7 40. b4 axb4 41. axb4 cxb4 42. c4 Rd6 43. d4 Ne6 44. d5 Nf4 45. Kh2 f5 46. Rd4 Kf6 47. Bxh4 Ne6 48. Bxg5+ Kxg5 49. Rd1 0-1

[Event "Curitiba op"]
[Site "Curitiba"]
[Date "2010.11.20"]
[Round "3"]
[White "Vieira, Rodrigo Luiz"]
[Black "Demertine, Matheus Leandro"]
[Result "0-1"]
[ECO "B00"]
[PlyCount "94"]
[EventDate "2010.11.19"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 139 Extra"]
[Source "ChessBase"]
[SourceDate "2011.01.05"]
[SourceVersion "1"]
[SourceVersionDate "2011.01.05"]
[SourceQuality "1"]

1. e4 b6 2. e5 Bb7 3. d4 e6 4. Nf3 d6 5. Bd3 Nd7 6. 0-0 h6 7. Nc3 dxe5 8. dxe5 Bb4 9. Bd2 Bxc3 10. Bxc3 Qe7 11. a3 0-0-0 12. Bb4 Qe8 13. h3 Ne7 14. c4 Kb8 15. Rc1 Bxf3 16. Qxf3 Nxe5 17. Qd1 Nxd3 18. Qc2 Nxc1 19. Rxc1 Nc6 20. Bc3 Nd4 21. Bxd4 Rxd4 22. c5 Qc6 23. b4 Rhd8 24. Kh2 Rd2 25. Qc3 f6 26. f3 R8d3 27. Qc4 Qxf3 28. Qg4 Qxg4 29. hxg4 Rxa3 30. b5 bxc5 31. Rxc5 Raa2 32. Kg3 g5 33. Rc6 Rxg2+ 34. Kf3 f5 35. gxf5 exf5 36. Rxh6 Rgb2 37. Ke3 Rb4 38. Kd3 Ra3+ 39. Kc2 Rh4 40. Rxh4 gxh4 41. Kd2 f4 42. Ke2 h3 43. Kf2 Rg3 44. Kf1 h2 45. Kf2 h1Q 46. Ke2 Qh2+ 47. Ke1 Rg1# 0-1

[Event "Curitiba op"]
[Site "Curitiba"]
[Date "2010.11.19"]
[Round "1"]
[White "Demertine, Matheus Leandro"]
[Black "Souza, Adwilhans Luciano"]
[Result "0-1"]
[ECO "A01"]
[BlackElo "2331"]
[PlyCount "114"]
[EventDate "2010.11.19"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 139 Extra"]
[Source "ChessBase"]
[SourceDate "2011.01.05"]
[SourceVersion "1"]
[SourceVersionDate "2011.01.05"]
[SourceQuality "1"]

1. b3 e5 2. Bb2 Nc6 3. e3 Nf6 4. Bb5 Bd6 5. Na3 Na5 6. Nf3 Qe7 7. Nc4 Nxc4 8. Bxc4 0-0 9. a4 c5 10. g4 Nxg4 11. Rg1 Bc7 12. Rxg4 d5 13. Rg5 dxc4 14. bxc4 f5 15. h4 Rf7 16. Rg1 h6 17. Nh2 Qxh4 18. Nf3 Qe7 19. d3 Bd7 20. Nd2 Qh4 21. Qe2 Raf8 22. 0-0-0 Bxa4 23. Rh1 Qe7 24. Rdg1 Rf6 25. Qh5 Be8 26. Qh4 Qe6 27. f4 Rg6 28. Rxg6 Bxg6 29. Qg3 exf4 30. exf4 Rf7 31. Re1 Qc6 32. Nf3 Bh5 33. Nh4 Bg4 34. Kb1 b5 35. Be5 bxc4 36. dxc4 Ba5 37. Re3 Bd2 38. Rb3 Qh1+ 39. Ka2 Be1 40. Rb8+ Kh7 41. Rb1 Bxg3 42. Rxh1 Rd7 43. Kb3 Rd2 44. Nxf5 Bxf5 45. Rg1 Bxc2+ 46. Kc3 Rd3+ 47. Kxc2 Rf3 48. Bd6 Bxf4 49. Bxc5 Be3 50. Bxe3 Rxe3 51. Kd2 Re7 52. Kd3 h5 53. Kd4 Kh6 54. Kd5 h4 55. Kd6 Re2 56. c5 Rd2+ 57. Ke6 Rc2 0-1

[Event "Curitiba op"]
[Site "Curitiba"]
[Date "2010.11.19"]
[Round "2"]
[White "Lavanhoni, Luiz Francisco"]
[Black "Demertine, Matheus Leandro"]
[Result "0-1"]
[ECO "A40"]
[PlyCount "66"]
[EventDate "2010.11.19"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 139 Extra"]
[Source "ChessBase"]
[SourceDate "2011.01.05"]
[SourceVersion "1"]
[SourceVersionDate "2011.01.05"]
[SourceQuality "1"]

1. d4 b6 2. c4 Bb7 3. Nc3 f5 4. Bf4 e6 5. e3 Bb4 6. Nf3 Nf6 7. Be2 0-0 8. 0-0 Bxc3 9. bxc3 d6 10. Qb3 Qe8 11. Rfd1 Nbd7 12. h3 Kh8 13. a4 a5 14. Nd2 Qg6 15. Bf3 Ne4 16. d5 Ndc5 17. Qc2 exd5 18. cxd5 Bxd5 19. c4 Bb7 20. Nb3 Nxb3 21. Qxb3 Nc5 22. Qc3 Bxf3 23. Bg3 Bxd1 24. Rxd1 Ne4 25. Qe1 Nxg3 26. fxg3 Rae8 27. Qf2 Re4 28. g4 h6 29. Rf1 Qg5 30. Re1 Rfe8 31. gxf5 Rxe3 32. Rd1 Re2 33. Qf3 Qe3+ 0-1

[Event "Catarinense-ch zt"]
[Site "Curitibanos"]
[Date "2009.09.??"]
[Round "4"]
[White "Borges, Guilherme Deola"]
[Black "Demertine, Matheus Leandro"]
[Result "1-0"]
[ECO "B00"]
[WhiteElo "2183"]
[PlyCount "77"]
[EventDate "2009.09.19"]
[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 b6 2. d4 Bb7 3. Bd3 f5 4. Nc3 Nf6 5. Qe2 e6 6. Nf3 fxe4 7. Nxe4 Be7 8. Bd2 0-0 9. 0-0-0 Nxe4 10. Bxe4 Bxe4 11. Qxe4 Nc6 12. h4 Qe8 13. Bg5 Qf7 14. Rhe1 Bxg5+ 15. Nxg5 Qf4+ 16. Rd2 Qxe4 17. Rxe4 Nb4 18. c3 Nd5 19. g3 Nf6 20. Re1 h6 21. Nh3 Rf7 22. f4 Raf8 23. Ng1 Nh5 24. Rg2 g5 25. hxg5 hxg5 26. fxg5 Rf2 27. Re2 Rxe2 28. Nxe2 Rf5 29. g4 Rf1+ 30. Kd2 Nf4 31. Nxf4 Rxf4 32. Ke3 Rf1 33. Rf2 Ra1 34. a3 Kg7 35. Kd3 Rd1+ 36. Kc4 a6 37. a4 Re1 38. Rf4 e5 39. Rf5 1-0

[Event "Catarinense-ch zt"]
[Site "Curitibanos"]
[Date "2009.09.??"]
[Round "5"]
[White "Demertine, Matheus Leandro"]
[Black "Bambino Filho, Antonio Carlos"]
[Result "0-1"]
[ECO "A01"]
[BlackElo "2175"]
[PlyCount "45"]
[EventDate "2009.09.19"]
[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 d5 2. e3 e5 3. Bb2 Bd6 4. f4 Nd7 5. Nf3 Qe7 6. Be2 Ngf6 7. fxe5 Bxe5 8. Nxe5 Nxe5 9. Bxe5 Qxe5 10. Nc3 Bd7 11. 0-0 0-0-0 12. Qe1 Bf5 13. Nb5 a6 14. Nd4 Bg6 15. b4 h5 16. a4 Rd6 17. a5 c6 18. Rc1 Be4 19. c4 Ng4 20. Qh4 Nf6 21. b5 dxc4 22. bxa6 bxa6 23. Bxc4 0-1

[Event "Catarinense-ch zt"]
[Site "Curitibanos"]
[Date "2009.09.??"]
[Round "2"]
[White "Demertine, Matheus Leandro"]
[Black "Barreiros da Silva, Denison Klein"]
[Result "1-0"]
[ECO "A01"]
[BlackElo "1828"]
[PlyCount "57"]
[EventDate "2009.09.19"]
[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. Bb2 Nc6 3. e3 a6 4. Nf3 d6 5. d4 Bg4 6. Be2 exd4 7. Nxd4 Bd7 8. Bf3 Nf6 9. Bxc6 Bxc6 10. Nxc6 bxc6 11. Qd4 d5 12. Nd2 Rb8 13. h4 Bd6 14. 0-0-0 Rb4 15. Qc3 c5 16. Nf3 Rg8 17. Ne5 Ne4 18. Qd3 Qa8 19. f3 Nf6 20. g4 g6 21. g5 Nh5 22. Qxd5 Qxd5 23. Rxd5 Ng3 24. Rh3 Nf5 25. Ng4 Be7 26. a3 Rb5 27. a4 Rb6 28. e4 Nd6 29. Nh6 1-0

[Event "Catarinense-ch zt"]
[Site "Curitibanos"]
[Date "2009.09.??"]
[Round "7"]
[White "Demertine, Matheus Leandro"]
[Black "Mariani, Daniel Brandao"]
[Result "0-1"]
[ECO "A01"]
[PlyCount "45"]
[EventDate "2009.09.19"]
[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. Bb2 Nc6 3. e3 d5 4. Bb5 Bd6 5. d4 e4 6. c4 Nf6 7. cxd5 Nxd5 8. Bxc6+ bxc6 9. Qc2 0-0 10. Qxc6 Rb8 11. Nd2 Bb7 12. Qc4 Nb4 13. Qc3 Nd3+ 14. Ke2 Bb4 15. Qc2 Ba6 16. Nc4 Qf6 17. Nh3 Rfd8 18. Rhd1 Qg6 19. Kf1 Bd6 20. Bc1 Qg4 21. Kg1 Nb4 22. Qd2 Nd5 23. Qa5 0-1

[Event "Catarinense-ch zt"]
[Site "Curitibanos"]
[Date "2009.09.??"]
[Round "3"]
[White "Demertine, Matheus Leandro"]
[Black "Sperb, Eduardo Quintana"]
[Result "1-0"]
[ECO "A03"]
[BlackElo "2102"]
[PlyCount "75"]
[EventDate "2009.09.19"]
[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 c5 2. Bb2 d5 3. e3 Nc6 4. Bb5 Nf6 5. f4 Bd7 6. Bxc6 Bxc6 7. Nf3 e6 8. 0-0 Qc7 9. Qe1 0-0-0 10. d3 h6 11. Nbd2 Be7 12. Ne5 Rdf8 13. c4 Rhg8 14. a3 Nd7 15. cxd5 exd5 16. Nxc6 Qxc6 17. b4 Kb8 18. Nb3 Qa4 19. Nxc5 Nxc5 20. bxc5 Bxc5 21. Be5+ Ka8 22. Qd2 Re8 23. Rfc1 Bb6 24. d4 f6 25. Bc7 Rc8 26. Bxb6 axb6 27. Qb4 Qa5 28. Rab1 Ka7 29. Kf2 Rge8 30. Qxa5+ bxa5 31. Rxc8 Rxc8 32. Rb5 b6 33. Rxd5 Rc2+ 34. Kf1 Ra2 35. e4 Rxa3 36. e5 Re3 37. Kf2 Re4 38. Kf3 1-0

[Event "Catarinense-ch zt"]
[Site "Curitibanos"]
[Date "2009.09.??"]
[Round "6"]
[White "Henriqueta, Ricardo"]
[Black "Demertine, Matheus Leandro"]
[Result "0-1"]
[ECO "B00"]
[PlyCount "57"]
[EventDate "2009.09.19"]
[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 b6 2. f4 Bb7 3. d3 e6 4. b3 d5 5. e5 d4 6. Nf3 Bb4+ 7. Bd2 Bxd2+ 8. Nbxd2 Ne7 9. Ne4 Nd5 10. Qd2 Nc6 11. c3 Ne3 12. Rc1 Nxf1 13. Rxf1 dxc3 14. Qxc3 Qd5 15. Nfd2 Rd8 16. Rf3 Nd4 17. Rg3 Nf5 18. Rxg7 Qxd3 19. Qxc7 Qe3+ 20. Kf1 Ba6+ 21. Rc4 Bxc4+ 22. bxc4 Qd3+ 23. Ke1 Qe3+ 24. Kf1 Qxf4+ 25. Ke2 Qe3+ 26. Kf1 Qd3+ 27. Ke1 Qe3+ 28. Kf1 Qf4+ 29. Kg1 0-1

[Event "Catarinense-ch zt"]
[Site "Curitibanos"]
[Date "2009.09.??"]
[Round "1"]
[White "Silva, Tiago Martins"]
[Black "Demertine, Matheus Leandro"]
[Result "0-1"]
[ECO "B00"]
[PlyCount "42"]
[EventDate "2009.09.19"]
[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 b6 2. d4 Bb7 3. Nc3 e6 4. f4 Bb4 5. Bd3 f5 6. Qe2 fxe4 7. Bxe4 Bxe4 8. Qxe4 Nc6 9. Bd2 Nf6 10. Qd3 0-0 11. Nf3 Qe8 12. 0-0-0 a5 13. Rde1 Qh5 14. a3 Bxc3 15. Bxc3 Nd5 16. g4 Nxf4 17. Qd2 Qd5 18. Re3 Qa2 19. b3 Nd5 20. Rd3 b5 21. Bb2 a4 0-1

[Event "Penha op 3rd"]
[Site "Penha"]
[Date "2009.05.31"]
[Round "5"]
[White "Calcado, Acyr Rogerio"]
[Black "Demertine, Matheus Leandro"]
[Result "1-0"]
[ECO "B00"]
[WhiteElo "2212"]
[PlyCount "67"]
[EventDate "2009.05.29"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 b6 2. d4 Bb7 3. Nc3 e6 4. Bd3 Bb4 5. Nf3 Nf6 6. Qe2 d5 7. exd5 Qxd5 8. Bd2 Bxc3 9. bxc3 0-0 10. c4 Qc6 11. Ne5 Qxg2 12. 0-0-0 Ne4 13. Rhg1 Qxf2 14. Bh6 g6 15. Bxf8 Qxe2 16. Bxe2 Nc3 17. Rde1 Kxf8 18. Rgf1 f5 19. Bf3 Bxf3 20. Rxf3 Nxa2+ 21. Kb2 Nb4 22. c3 N4c6 23. Rh3 Nxe5 24. Rxe5 h5 25. Rxe6 Kf7 26. Rhe3 f4 27. Re7+ Kf6 28. R3e6+ Kf5 29. Re5+ Kf6 30. Re8 f3 31. Rf8+ Kg7 32. Rxf3 Nd7 33. Re7+ Kh6 34. h4 1-0

[Event "Penha op 3rd"]
[Site "Penha"]
[Date "2009.05.31"]
[Round "4"]
[White "Demertine, Matheus Leandro"]
[Black "Krueger, Carlos Caroli"]
[Result "1-0"]
[ECO "A01"]
[PlyCount "65"]
[EventDate "2009.05.29"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. b3 d6 2. Bb2 c5 3. e3 Nc6 4. f4 e6 5. Nf3 Nf6 6. Bb5 Bd7 7. 0-0 a6 8. Bxc6 Bxc6 9. Qe1 Be7 10. d3 Nd5 11. Nbd2 Bf6 12. d4 0-0 13. Ne4 Be7 14. dxc5 Nc7 15. Nxd6 Bxd6 16. cxd6 Qxd6 17. Ne5 Qc5 18. c4 f6 19. Bd4 Qe7 20. Nxc6 bxc6 21. Qa5 Rfd8 22. Rad1 Rd7 23. Bc5 Qd8 24. Qe1 a5 25. Bb6 Qe8 26. Rxd7 Qxd7 27. Qd1 Qe7 28. Qf3 Ne8 29. Qxc6 Ra6 30. Rd1 h5 31. c5 Qf7 32. Rd8 Kf8 33. Qd6+ 1-0

[Event "Penha op 3rd"]
[Site "Penha"]
[Date "2009.05.30"]
[Round "2"]
[White "Demertine, Matheus Leandro"]
[Black "Bambino Filho, Antonio Carlos"]
[Result "0-1"]
[ECO "A03"]
[BlackElo "2148"]
[PlyCount "81"]
[EventDate "2009.05.29"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. b3 d5 2. Bb2 Bg4 3. f4 Nc6 4. Nf3 Bxf3 5. exf3 e6 6. Bb5 Nge7 7. Qe2 Qd7 8. d3 a6 9. Bxc6 Qxc6 10. Nc3 Nf5 11. 0-0 h5 12. Nd1 Bc5+ 13. Nf2 h4 14. Rfe1 0-0-0 15. c3 Be3 16. d4 Bxf4 17. Nd3 Be3+ 18. Kf1 Bg5 19. Bc1 Bf6 20. Bd2 Rdg8 21. a4 g5 22. a5 Be7 23. Ne5 Qe8 24. b4 Bd6 25. Ng4 Rg6 26. Rab1 Qb5 27. Qxb5 axb5 28. Ra1 Kb8 29. h3 Bg3 30. Re2 Nd6 31. Be1 Nf5 32. Kg1 Bd6 33. Bf2 Kc8 34. a6 b6 35. Rea2 Kb8 36. Be1 Ka7 37. Nf2 Ne3 38. Nd3 Nc4 39. Nc1 Re8 40. Nd3 e5 41. Bf2 0-1

[Event "Penha op 3rd"]
[Site "Penha"]
[Date "2009.05.30"]
[Round "3"]
[White "Horst, Rodrigo"]
[Black "Demertine, Matheus Leandro"]
[Result "0-1"]
[ECO "A10"]
[PlyCount "133"]
[EventDate "2009.05.29"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. c4 b6 2. e4 Bb7 3. Nc3 e6 4. g3 Bb4 5. Bg2 f5 6. d3 Nf6 7. f3 0-0 8. Nge2 d5 9. e5 d4 10. exf6 Qxf6 11. Qb3 Na6 12. a3 Nc5 13. Qc2 dxc3 14. axb4 cxb2 15. Bxb2 Qxb2 16. Qxb2 Nxd3+ 17. Kd2 Nxb2 18. Kc3 Rfd8 19. Nd4 Kf7 20. Rhe1 Nd3 21. Re3 Nb2 22. Re5 a6 23. Bh3 Rxd4 24. Kxd4 Nd1 25. Re2 Bxf3 26. Rea2 Kf6 27. Kd3 Rd8+ 28. Kc2 Be4+ 29. Kc1 Ne3 30. c5 bxc5 31. bxc5 Rd5 32. c6 Rc5+ 33. Kd2 Nc4+ 34. Ke1 Rxc6 35. Kf2 Ne5 36. Bf1 Nd3+ 37. Ke3 Nb4 38. Bxa6 Nxa2 39. Rxa2 Rc2 40. Ra5 Rxh2 41. Rc5 c6 42. Bb7 Rc2 43. Ra5 Rc3+ 44. Kf2 Rf3+ 45. Ke2 Rxg3 46. Ra8 f4 47. Ra4 Ke5 48. Ra5+ Kf6 49. Ra4 Re3+ 50. Kf2 g5 51. Ra8 g4 52. Rf8+ Ke5 53. Rg8 g3+ 54. Kf1 Bd3+ 55. Kg2 Re2+ 56. Kf3 Rf2+ 57. Kg4 g2 58. Rg5+ Kd4 59. Kh3 Be4 60. Ba6 Rf1 61. Rxg2 Bxg2+ 62. Kxg2 Re1 63. Kf3 e5 64. Be2 c5 65. Bb5 c4 66. Bd7 c3 67. Bf5 0-1

[Event "Penha op 3rd"]
[Site "Penha"]
[Date "2009.05.29"]
[Round "1"]
[White "Costa, Pedro Henrique"]
[Black "Demertine, Matheus Leandro"]
[Result "0-1"]
[ECO "A85"]
[PlyCount "62"]
[EventDate "2009.05.29"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. d4 f5 2. c4 Nf6 3. Nc3 e6 4. Nf3 b6 5. e3 Bb4 6. a3 Bxc3+ 7. bxc3 Bb7 8. Be2 0-0 9. 0-0 Qe8 10. Ne5 d6 11. Nd3 Ne4 12. Bb2 Nd7 13. Nf4 e5 14. Nd5 Rc8 15. Bh5 g6 16. Bf3 a5 17. Bxe4 fxe4 18. Qb3 Qe6 19. a4 Ba8 20. dxe5 dxe5 21. Ba3 Rf7 22. Rad1 c6 23. Ne7+ Rxe7 24. Bxe7 Qxe7 25. c5+ Kg7 26. cxb6 Nc5 27. Qa3 Bb7 28. Rd2 Ba6 29. Rfd1 Kf7 30. Rb1 Rb8 31. h3 Bd3 0-1

[Event "Braco do NorteTSC"]
[Site "Braco do Norte"]
[Date "2008.08.??"]
[Round "3"]
[White "Cordeiro, Marco Aurelio Zaror"]
[Black "Demertine, Matheus Leandro"]
[Result "1/2-1/2"]
[ECO "B00"]
[WhiteElo "2223"]
[PlyCount "41"]
[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 b6 2. g3 Bb7 3. Bg2 e6 4. Nc3 Bb4 5. Nge2 d5 6. exd5 exd5 7. 0-0 Nf6 8. a3 Bxc3 9. bxc3 0-0 10. c4 c6 11. cxd5 cxd5 12. Bb2 Nbd7 13. Nd4 Nc5 14. a4 Ne6 15. Nf5 Re8 16. Re1 Ne4 17. d3 Nd6 18. Ne3 d4 19. Nd5 Rc8 20. Qg4 Rxc2 21. Bxd4 1/2-1/2

[Event "Braco do NorteTSC"]
[Site "Braco do Norte"]
[Date "2008.08.??"]
[Round "4"]
[White "Demertine, Matheus Leandro"]
[Black "Godois, Jorge de Oliveira"]
[Result "0-1"]
[ECO "A02"]
[BlackElo "2231"]
[PlyCount "72"]
[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. b3 f5 2. e3 Nf6 3. Bb2 e6 4. f4 d5 5. Nf3 Bd6 6. Be2 0-0 7. 0-0 b6 8. d3 Bb7 9. h3 Nbd7 10. Nbd2 Bc5 11. d4 Bd6 12. Ne5 Ne4 13. Qe1 Bb4 14. Nef3 c5 15. a3 Ba5 16. Rc1 Nc3 17. Bd3 Nf6 18. Qh4 Nfe4 19. Qxd8 Raxd8 20. Nxe4 Nxe4 21. Rb1 Bd2 22. Bc1 Bc3 23. Bb2 cxd4 24. Nxd4 Bxd4 25. Bxd4 Nd2 26. Rfd1 Nxb1 27. Rxb1 Rc8 28. Rf1 Kf7 29. g4 g6 30. g5 Bc6 31. h4 Be8 32. Bf6 Kg8 33. c3 Rxf6 34. gxf6 Rxc3 35. Ba6 Rxe3 36. Bc8 Kf7 0-1

[Event "Braco do NorteTSC"]
[Site "Braco do Norte"]
[Date "2008.08.??"]
[Round "6"]
[White "Demertine, Matheus Leandro"]
[Black "Kozak, Dalton Demetrio"]
[Result "1-0"]
[ECO "A01"]
[PlyCount "63"]
[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. b3 f5 2. Bb2 e6 3. e3 Nf6 4. f4 Be7 5. Nf3 b6 6. Be2 Bb7 7. 0-0 0-0 8. Ne5 d6 9. Bf3 Bxf3 10. Qxf3 Nd5 11. Nd3 Nd7 12. c4 N5f6 13. Nb4 Nc5 14. Nc6 Qd7 15. b4 Na4 16. Bd4 d5 17. Ne5 Qd6 18. Na3 Qxb4 19. Nb5 Bd6 20. a3 Qxd2 21. Nc6 Ne4 22. Nxd6 Nxd6 23. Nb4 Ne4 24. Rad1 Nac3 25. Rxd2 Nxd2 26. Qf2 Nce4 27. Qe2 Nxf1 28. Qxf1 dxc4 29. Qa1 Rf7 30. Na2 Rc8 31. Nc3 Nxc3 32. Qxc3 1-0

[Event "Braco do NorteTSC"]
[Site "Braco do Norte"]
[Date "2008.08.??"]
[Round "2"]
[White "Demertine, Matheus Leandro"]
[Black "Straubell, Sergio Silveira"]
[Result "1-0"]
[ECO "A01"]
[PlyCount "75"]
[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. b3 c6 2. Bb2 d5 3. e3 e6 4. f4 Nf6 5. Nf3 Be7 6. Be2 Nbd7 7. 0-0 Qb6 8. Qe1 0-0 9. Ne5 Qc7 10. d3 b5 11. Qg3 Re8 12. Nd2 Bf8 13. Ndf3 h6 14. Nxd7 Nxd7 15. Ne5 Nxe5 16. Bxe5 Qe7 17. Bh5 Rd8 18. Rf2 Bd7 19. e4 Be8 20. f5 f6 21. Bxe8 Rxe8 22. Bf4 e5 23. Bxh6 d4 24. Qg4 Qf7 25. Rf3 Bb4 26. Rg3 Re7 27. Qh4 Kf8 28. Rxg7 Qxg7 29. Bxg7+ Kxg7 30. Qg4+ Kf8 31. Qh5 Ree8 32. Qh7 Rec8 33. Rf1 Ke8 34. Rf3 Be7 35. Qg8+ Kd7 36. Qe6+ Ke8 37. Rg3 Kd8 38. Rg7 1-0

[Event "Braco do NorteTSC"]
[Site "Braco do Norte"]
[Date "2008.08.??"]
[Round "5"]
[White "Konrath, Marcelo"]
[Black "Demertine, Matheus Leandro"]
[Result "1/2-1/2"]
[ECO "B00"]
[PlyCount "53"]
[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. Nc3 b6 2. e4 Bb7 3. f4 e6 4. Nf3 Bb4 5. d3 d5 6. exd5 Qxd5 7. Bd2 Bxc3 8. Bxc3 Nf6 9. Qd2 Nbd7 10. Be2 0-0-0 11. b3 h6 12. 0-0-0 Qd6 13. Ne5 Rhf8 14. Bf3 Bxf3 15. Nxf3 Nd5 16. Bxg7 Rg8 17. Be5 Nxe5 18. Nxe5 f6 19. Nc4 Qxf4 20. Qxf4 Nxf4 21. g3 Ne2+ 22. Kd2 Nd4 23. c3 Nc6 24. Rde1 b5 25. Nb2 Rd6 26. Rhf1 f5 27. a3 1/2-1/2

[Event "BRA-ch U14"]
[Site "Caioba"]
[Date "2006.05.??"]
[Round "1"]
[White "Jukemura, Leandro"]
[Black "Demertine, Matheus Leandro"]
[Result "1-0"]
[ECO "B02"]
[WhiteElo "1993"]
[PlyCount "81"]
[EventDate "2006.05.11"]
[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 d5 2. Nc3 Nf6 3. exd5 Nxd5 4. Bc4 Nxc3 5. Qf3 e6 6. Qxc3 Nd7 7. Nf3 Qf6 8. d4 h6 9. 0-0 Bd6 10. Qd2 0-0 11. b3 b6 12. Bb5 Rd8 13. Bc6 Rb8 14. Bb2 Bb7 15. Bxb7 Rxb7 16. c4 Qf5 17. Rad1 Nf6 18. Qe2 Rbb8 19. Rd3 Ne4 20. Nh4 Qh7 21. Re1 Bb4 22. Red1 Be7 23. Nf3 Bf6 24. Ne5 Rd6 25. f3 Bxe5 26. fxe4 Bf4 27. Rf3 Bg5 28. e5 Rd7 29. d5 Rbd8 30. Rfd3 Be7 31. Qf3 Qg6 32. g3 a6 33. Bc1 f6 34. exf6 Qxf6 35. Qxf6 Bxf6 36. Ba3 c6 37. d6 Kf7 38. c5 bxc5 39. Bxc5 e5 40. Kf2 Ke6 41. Kf3 1-0

[Event "BRA-ch U14"]
[Site "Caioba"]
[Date "2006.05.??"]
[Round "7"]
[White "Massarioli, Felipe Alvarenga"]
[Black "Demertine, Matheus Leandro"]
[Result "1/2-1/2"]
[ECO "A85"]
[WhiteElo "2080"]
[PlyCount "78"]
[EventDate "2006.05.11"]
[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 f5 2. c4 Nf6 3. Nc3 e6 4. Nf3 b6 5. e3 Bb7 6. Be2 Bb4 7. Qb3 a5 8. Bd2 0-0 9. a3 Bxc3 10. Bxc3 d6 11. 0-0-0 Nbd7 12. Ng5 Qe8 13. Bf3 Ne4 14. Bxe4 fxe4 15. Nh3 Nf6 16. Nf4 Nh5 17. g3 a4 18. Qc2 d5 19. Qe2 Nxf4 20. gxf4 Ba6 21. Qg4 Bxc4 22. Rdg1 Rf7 23. Rg3 Qd7 24. Rhg1 Re8 25. h4 Bd3 26. Kd2 Qe7 27. Qh5 Rd8 28. Qe5 Rd7 29. Bb4 Qe8 30. R3g2 Kh8 31. Qh5 Rf8 32. Qd1 Rf6 33. Qxa4 Qc8 34. Rc1 Rh6 35. Qc6 e5 36. Qa4 exf4 37. exf4 Rxh4 38. Qc6 Rh6 39. Qa4 Rf6 1/2-1/2

[Event "Pan American-ch U14"]
[Site "Balneario Camboriu"]
[Date "2005.??.??"]
[Round "?"]
[White "Calderon, Jonathan"]
[Black "Demertine, Matheus Leandro"]
[Result "1-0"]
[ECO "B00"]
[WhiteElo "2080"]
[PlyCount "27"]
[EventDate "2005.06.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "CBM 106 Extra"]
[Source "ChessBase"]
[SourceDate "2005.07.01"]
[SourceVersion "1"]
[SourceVersionDate "2005.07.01"]
[SourceQuality "1"]

1. e4 b6 2. d4 Bb7 3. Nc3 e6 4. Bd3 f5 5. exf5 Bxg2 6. Qh5+ g6 7. fxg6 Bg7 8. gxh7+ Kf8 9. hxg8Q+ Kxg8 10. Qg4 Bxh1 11. Bg5 Qf8 12. h4 Nc6 13. h5 Bh6 14. Bxh6+ 1-0

[Event "BRA-ch U12"]
[Site "Pocos de Caldas"]
[Date "2004.??.??"]
[Round "3"]
[White "Marques, Gabriela Angelica"]
[Black "Demertine, Matheus Leandro"]
[Result "1-0"]
[ECO "A10"]
[PlyCount "61"]
[EventDate "2004.??.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. Nf3 b6 2. g3 Bb7 3. Bg2 e6 4. 0-0 f5 5. c4 Nf6 6. Nc3 Bb4 7. Qc2 0-0 8. d3 d6 9. a3 Bxc3 10. Qxc3 Nbd7 11. b4 Qe8 12. Bb2 e5 13. Rfd1 Rb8 14. Ne1 Bxg2 15. Nxg2 Qh5 16. Qd2 g5 17. h4 h6 18. Rac1 Rf7 19. Rc2 Rg7 20. Bc1 Rg6 21. Rb2 gxh4 22. Qe1 hxg3 23. fxg3 Ng4 24. Nh4 Rg7 25. e4 f4 26. Nf5 Rg5 27. gxf4 exf4 28. Bxf4 Ne3+ 29. Bxg5 Nxd1 30. Rh2 Qg6 31. Ne7+ 1-0

[Event "BRA South Region-ch"]
[Site "Florianopolis"]
[Date "2000.08.??"]
[Round "6"]
[White "Arruda, Alessandra"]
[Black "Demertine, Matheus Leandro"]
[Result "1-0"]
[ECO "D07"]
[PlyCount "91"]
[EventDate "2000.08.25"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. d4 d5 2. c4 Nc6 3. Nc3 Nxd4 4. Qxd4 Nf6 5. Bg5 dxc4 6. Qxc4 Be6 7. Qf4 Nh5 8. Qf3 h6 9. Qxh5 Qd7 10. e3 Rd8 11. Nf3 Bg4 12. Rd1 Bxh5 13. Rxd7 Rxd7 14. Bf4 g5 15. Be5 Bg7 16. Bxg7 Rg8 17. Bxh6 Rg6 18. Bxg5 Rgd6 19. Be2 Bxf3 20. Bxf3 Rg6 21. Bf4 Rb6 22. b3 a5 23. 0-0 Rf6 24. Nd5 Rf5 25. Nxc7+ Kd8 26. Bg4 Rxf4 27. Bxd7 Re4 28. Bf5 Re5 29. Rd1+ Kxc7 30. Bh3 f5 31. g3 e6 32. Rd4 Rc5 33. Rc4 Rxc4 34. bxc4 e5 35. Bxf5 Kc6 36. h4 Kc5 37. h5 Kxc4 38. h6 b5 39. h7 b4 40. h8Q b3 41. axb3+ Kxb3 42. Qxe5 a4 43. g4 a3 44. g5 Kb4 45. Kf1 a2 46. Ke2 1-0

[Event "BRA South Region-ch"]
[Site "Florianopolis"]
[Date "2000.08.??"]
[Round "4"]
[White "Demertine, Matheus Leandro"]
[Black "Amaral, Leonardo"]
[Result "0-1"]
[ECO "C55"]
[PlyCount "70"]
[EventDate "2000.08.25"]
[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 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. Bc4 Bb4 5. a3 Bxc3 6. dxc3 Nxe4 7. Bg5 f6 8. Bh4 Na5 9. Bb5 a6 10. Ba4 0-0 11. Nxe5 Qe8 12. Nxd7 Nxc3+ 13. Ne5 Qxe5+ 14. Kf1 Nxd1 15. Rxd1 Qe4 16. b3 Qxh4 17. b4 Qg4 18. f3 Qc4+ 19. Rd3 Qa2 20. c3 Qa1+ 21. Rd1 Qxc3 22. bxa5 b5 23. Bxb5 axb5 24. Ke2 Qxa3 25. Rd3 Qa2+ 26. Rd2 Qxa5 27. Rhd1 Ba6 28. Rd7 b4+ 29. Kf2 Qe5 30. Rb1 Qxh2 31. Rb2 Rad8 32. Rxd8 Rxd8 33. Rxb4 Rd2+ 34. Ke1 Qxg2 35. Rb5 Qf2# 0-1

[Event "BRA South Region-ch"]
[Site "Florianopolis"]
[Date "2000.08.??"]
[Round "5"]
[White "Demertine, Matheus Leandro"]
[Black "Dall Orsoleta, Danieli"]
[Result "0-1"]
[ECO "C55"]
[PlyCount "46"]
[EventDate "2000.08.25"]
[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 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. Bc4 Bc5 5. Ng5 0-0 6. Bxf7+ Rxf7 7. Nxf7 Kxf7 8. Nd5 Nxd5 9. Qf3+ Nf6 10. Qb3+ Kf8 11. f3 Nd4 12. Qa4 d6 13. d3 Qd7 14. Qc4 Qe6 15. Qc3 Bb4 16. Qxb4 Nxc2+ 17. Kd2 Nxb4 18. Re1 d5 19. Kc3 Qd6 20. exd5 Nfxd5+ 21. Kd2 Nf4 22. Kd1 Qxd3+ 23. Bd2 Qc2# 0-1

[Event "BRA South Region-ch"]
[Site "Florianopolis"]
[Date "2000.08.??"]
[Round "1"]
[White "Ivanov, Yuri Alexander"]
[Black "Demertine, Matheus Leandro"]
[Result "1-0"]
[ECO "D00"]
[PlyCount "55"]
[EventDate "2000.08.25"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. d4 d5 2. f4 Nc6 3. e3 f5 4. Bd3 Nf6 5. Nf3 Nb4 6. Be2 Bd7 7. c3 Nc6 8. 0-0 Ne4 9. Bd2 e6 10. Be1 Bd6 11. Bh4 Be7 12. Bxe7 Qxe7 13. Ne5 Nxe5 14. fxe5 b5 15. Nd2 b4 16. Nxe4 fxe4 17. Rc1 Bc6 18. c4 dxc4 19. Rxc4 Qd7 20. Qc2 Ba4 21. b3 Bb5 22. Rxc7 Qd5 23. Rff7 Qd8 24. Bxb5+ Qd7 25. Rfxd7 Rb8 26. Rd6+ Rxb5 27. Qc6+ Kf8 28. Rd8# 1-0

