[Event "BRA-ch 90th"]
[Site "Natal"]
[Date "2024.12.21"]
[Round "11"]
[White "Mathias, Carlos Augusto De C"]
[Black "Oliveira, Luana dos Santos"]
[Result "1-0"]
[ECO "A82"]
[WhiteElo "1701"]
[PlyCount "33"]
[EventDate "2024.12.13"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "BRA"]
[SourceTitle "CB52_2024"]
[SourceDate "2024.12.25"]
[SourceVersion "1"]
[SourceVersionDate "2024.12.25"]
[SourceQuality "1"]

1. d4 f5 2. e4 d6 3. Nc3 Nf6 4. Bd3 g6 5. Bg5 Bg7 6. Nf3 fxe4 7. Nxe4 Nfd7 8. Qd2 b6 9. Bh6 Bf8 10. Bxf8 Nxf8 11. h4 Bb7 12. h5 e6 13. hxg6 Nxg6 14. Neg5 Qd7 15. Bxg6+ Ke7 16. Nxh7 Nc6 17. Qg5# 1-0

[Event "BRA-ch 90th"]
[Site "Natal"]
[Date "2024.12.20"]
[Round "10"]
[White "Rego, Brasilicio Henrique"]
[Black "Mathias, Carlos Augusto De C"]
[Result "1/2-1/2"]
[ECO "B00"]
[WhiteElo "1800"]
[BlackElo "1701"]
[PlyCount "35"]
[EventDate "2024.12.13"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "BRA"]
[SourceTitle "CB52_2024"]
[SourceDate "2024.12.25"]
[SourceVersion "1"]
[SourceVersionDate "2024.12.25"]
[SourceQuality "1"]

1. e4 Nc6 2. Nf3 d6 3. d4 Nf6 4. Nc3 g6 5. Bd3 Bg7 6. 0-0 Bg4 7. Be2 0-0 8. h3 Bc8 9. Re1 Nb8 10. Bc4 Nbd7 11. e5 dxe5 12. dxe5 Ne8 13. Bxf7+ Rxf7 14. e6 Rf5 15. Re2 c6 16. Rd2 Nef6 17. exd7 Nxd7 18. Ne2 1/2-1/2

[Event "BRA-ch 90th"]
[Site "Natal"]
[Date "2024.12.19"]
[Round "9"]
[White "Mathias, Carlos Augusto De C"]
[Black "Costa, Lucas Medeiros"]
[Result "1/2-1/2"]
[ECO "A45"]
[WhiteElo "1701"]
[BlackElo "1586"]
[PlyCount "64"]
[EventDate "2024.12.13"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "BRA"]
[SourceTitle "CB52_2024"]
[SourceDate "2024.12.25"]
[SourceVersion "1"]
[SourceVersionDate "2024.12.25"]
[SourceQuality "1"]

1. d4 Nf6 2. Nc3 e6 3. Bf4 Bb4 4. e3 Nc6 5. Bd3 0-0 6. Bg5 Re8 7. f4 Be7 8. a3 h6 9. Bh4 Nd5 10. Bxe7 Ncxe7 11. Qd2 b6 12. Nxd5 exd5 13. Nf3 d6 14. 0-0 Bf5 15. Rae1 Bxd3 16. Qxd3 Qd7 17. e4 dxe4 18. Rxe4 Ng6 19. Rfe1 d5 20. Rxe8+ Rxe8 21. Rxe8+ Qxe8 22. g3 Qe4 23. Qxe4 dxe4 24. Ne5 Nxe5 25. dxe5 h5 26. Kf2 f5 27. Ke3 Kf7 28. b4 b5 29. h3 g6 30. Kd4 Ke6 31. c4 c6 32. cxb5 cxb5 1/2-1/2

[Event "BRA-ch 90th"]
[Site "Natal"]
[Date "2024.12.18"]
[Round "8"]
[White "De Lima, Deyvid Felipe Gomes"]
[Black "Mathias, Carlos Augusto De C"]
[Result "1-0"]
[ECO "B00"]
[WhiteElo "1490"]
[BlackElo "1701"]
[PlyCount "65"]
[EventDate "2024.12.13"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "BRA"]
[SourceTitle "CB52_2024"]
[SourceDate "2024.12.25"]
[SourceVersion "1"]
[SourceVersionDate "2024.12.25"]
[SourceQuality "1"]

1. e4 Nc6 2. Nf3 d6 3. d4 Nf6 4. Nc3 g6 5. Be2 Bg7 6. 0-0 a6 7. a4 Bd7 8. d5 Nb8 9. Re1 0-0 10. Bg5 c6 11. Bd3 h6 12. Bh4 g5 13. Bg3 Nh5 14. Qe2 Nxg3 15. fxg3 Qb6+ 16. Kh1 Qxb2 17. Na2 Qa3 18. e5 Bg4 19. Qe4 Rd8 20. Qxg4 cxd5 21. Nb4 Qc3 22. Nxd5 Qa5 23. Nxe7+ Kf8 24. Nf5 dxe5 25. Nxg7 Kxg7 26. Nxe5 Re8 27. Nf3 Nc6 28. h4 f6 29. Qd7+ Kf8 30. Qh7 Ne5 31. Qxh6+ Ke7 32. Nxe5 fxe5 33. Qxg5+ 1-0

[Event "BRA-ch 90th"]
[Site "Natal"]
[Date "2024.12.17"]
[Round "7"]
[White "Mathias, Carlos Augusto De C"]
[Black "Lemos, Paulo Renato Bueno"]
[Result "0-1"]
[ECO "D04"]
[WhiteElo "1701"]
[BlackElo "1903"]
[PlyCount "64"]
[EventDate "2024.12.13"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "BRA"]
[SourceTitle "CB52_2024"]
[SourceDate "2024.12.25"]
[SourceVersion "1"]
[SourceVersionDate "2024.12.25"]
[SourceQuality "1"]

1. Nf3 d5 2. b3 Nf6 3. Bb2 g6 4. e3 Bg7 5. d4 0-0 6. Nbd2 b6 7. Ne5 Nfd7 8. f4 Nxe5 9. fxe5 f6 10. Nf3 Nd7 11. Bb5 fxe5 12. Bxd7 Qxd7 13. Nxe5 Bxe5 14. dxe5 e6 15. Qe2 a5 16. Rf1 Rxf1+ 17. Qxf1 Ba6 18. Qf4 Rf8 19. Qg3 Rf1+ 20. Kd2 Rf5 21. Re1 a4 22. Kc1 axb3 23. axb3 c5 24. Qh4 c4 25. e4 dxe4 26. Rd1 Qc7 27. Ba3 cxb3 28. Rd8+ Kg7 29. Rd2 Bd3 30. Bd6 Qc3 31. Rf2 Qe1+ 32. Kb2 Qxf2 0-1

[Event "BRA-ch 90th"]
[Site "Natal"]
[Date "2024.12.16"]
[Round "6"]
[White "Torres, Jose Belo"]
[Black "Mathias, Carlos Augusto De C"]
[Result "1-0"]
[ECO "B00"]
[WhiteElo "2033"]
[BlackElo "1701"]
[PlyCount "153"]
[EventDate "2024.12.13"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "BRA"]
[SourceTitle "CB52_2024"]
[SourceDate "2024.12.25"]
[SourceVersion "1"]
[SourceVersionDate "2024.12.25"]
[SourceQuality "1"]

1. e4 Nc6 2. Nf3 d6 3. Nc3 Bg4 4. d4 e6 5. Be3 Be7 6. Bb5 a6 7. Ba4 b5 8. Nxb5 axb5 9. Bxb5 Kf8 10. Bxc6 Rb8 11. Ba4 c5 12. Bb3 cxd4 13. Bxd4 Qa5+ 14. Bc3 Qa8 15. Qd3 e5 16. Qd5 Qxd5 17. exd5 Nf6 18. a4 Bxf3 19. gxf3 g6 20. Ke2 Nh5 21. Bd2 f5 22. a5 f4 23. Ra4 Ra8 24. a6 Nf6 25. Rha1 Ra7 26. Rb4 Kf7 27. Rb7 Rxb7 28. axb7 Rb8 29. Ra7 Bd8 30. Bb4 Ke7 31. Ra6 Bc7 32. Ba3 Rxb7 33. Kd3 Bb6 34. Bc4 Rb8 35. Ke2 g5 36. h3 h5 37. b3 g4 38. hxg4 hxg4 39. fxg4 Nxg4 40. f3 Nf6 41. Bb4 Bc7 42. Ra7 Kd8 43. Be1 Nh5 44. Kf1 Ng7 45. Bd3 Kc8 46. Ke2 Kd7 47. Ba5 Ne8 48. Bg6 Kd8 49. Be1 Ng7 50. Bh4+ Kd7 51. Bf7 Rh8 52. Bf2 Rh2 53. Kf1 Kc8 54. Ra8+ Kb7 55. Rg8 Nf5 56. Kg1 Rh6 57. Be8 Bb6 58. Bxb6 Kxb6 59. Rg6 Rxg6+ 60. Bxg6 Ne3 61. Be4 Kc5 62. c4 Nd1 63. Kf1 Ne3+ 64. Ke2 Kb4 65. Bd3 Kxb3 66. c5 Nxd5 67. cxd6 Nf6 68. Bb5 Kc3 69. d7 Nxd7 70. Bxd7 Kc2 71. Bf5+ Kc3 72. Be4 Kc4 73. Kf2 Kc3 74. Kg2 Kd4 75. Kh3 Kc5 76. Kg4 Kd6 77. Kf5 1-0

[Event "BRA-ch 90th"]
[Site "Natal"]
[Date "2024.12.15"]
[Round "4"]
[White "Macedo, Maximo Ian Farias D"]
[Black "Mathias, Carlos Augusto De C"]
[Result "0-1"]
[ECO "E21"]
[WhiteElo "1413"]
[BlackElo "1701"]
[PlyCount "70"]
[EventDate "2024.12.13"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "BRA"]
[SourceTitle "CB52_2024"]
[SourceDate "2024.12.25"]
[SourceVersion "1"]
[SourceVersionDate "2024.12.25"]
[SourceQuality "1"]

1. c4 Nf6 2. e3 b6 3. Nf3 Bb7 4. Nc3 e6 5. d4 Bb4 6. Bd2 Bxc3 7. Bxc3 0-0 8. Bd3 d6 9. 0-0 Nbd7 10. Qe2 Ne4 11. Bxe4 Bxe4 12. Nd2 Bb7 13. e4 d5 14. exd5 exd5 15. Rfd1 Qg5 16. Nf3 Qg6 17. b3 dxc4 18. bxc4 Nf6 19. d5 Rfe8 20. Qd2 Ne4 21. Qc2 Nxc3 22. Qxc3 h6 23. Qd2 Qd6 24. Re1 Rxe1+ 25. Qxe1 Kf8 26. Nd4 Qc5 27. Rc1 Re8 28. Qc3 Bxd5 29. Nf5 f6 30. h3 Bf7 31. Nd4 a6 32. Nb3 Qe5 33. Qb4+ Kg8 34. Qa4 a5 35. Qc6 Qe2 0-1

[Event "BRA-ch 90th"]
[Site "Natal"]
[Date "2024.12.15"]
[Round "5"]
[White "Mathias, Carlos Augusto De C"]
[Black "Dantas, Pedro Lucas Araujo"]
[Result "1-0"]
[ECO "A48"]
[WhiteElo "1701"]
[BlackElo "1885"]
[PlyCount "117"]
[EventDate "2024.12.13"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "BRA"]
[SourceTitle "CB52_2024"]
[SourceDate "2024.12.25"]
[SourceVersion "1"]
[SourceVersionDate "2024.12.25"]
[SourceQuality "1"]

1. d4 Nf6 2. e3 g6 3. Bd3 Bg7 4. Nf3 c5 5. c3 d6 6. 0-0 0-0 7. Nbd2 b6 8. h3 Bb7 9. a4 a6 10. Rb1 Nbd7 11. b4 cxd4 12. cxd4 Nd5 13. Qb3 Rc8 14. Bb2 Rc7 15. Rfc1 Qa8 16. Rxc7 Nxc7 17. Rc1 Rc8 18. Bf1 Nf6 19. Qa3 h6 20. Ne1 g5 21. Be2 h5 22. Bf3 g4 23. Bxb7 Qxb7 24. h4 g3 25. f3 Bh6 26. Nf1 Ncd5 27. Rxc8+ Qxc8 28. e4 Nf4 29. Nxg3 Qc4 30. Kf2 Ng6 31. Nf5 Bd2 32. Nd3 e6 33. Ne3 Bxe3+ 34. Kxe3 Nxh4 35. g3 Ng6 36. Qc3 d5 37. Qxc4 dxc4 38. Ne5 Nxe5 39. dxe5 Nd7 40. b5 axb5 41. axb5 Nc5 42. Bd4 Na4 43. f4 Kg7 44. Kd2 Kg6 45. Kc1 h4 46. gxh4 Kh5 47. Kb1 c3 48. Kc2 Kxh4 49. Kb3 Kg4 50. Kxa4 c2 51. Be3 Kf3 52. Bc1 Kxe4 53. Kb3 Kd3 54. Kb4 Ke2 55. Kc3 Kf3 56. Kxc2 Ke4 57. Kb3 Kd3 58. Kb4 Ke4 59. Kc4 1-0

[Event "BRA-ch 90th"]
[Site "Natal"]
[Date "2024.12.14"]
[Round "3"]
[White "Mathias, Carlos Augusto De C"]
[Black "Matos, Lara Yasmin Pinheir"]
[Result "1-0"]
[ECO "D00"]
[WhiteElo "1701"]
[BlackElo "1778"]
[PlyCount "53"]
[EventDate "2024.12.13"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "BRA"]
[SourceTitle "CB52_2024"]
[SourceDate "2024.12.25"]
[SourceVersion "1"]
[SourceVersionDate "2024.12.25"]
[SourceQuality "1"]

1. d4 d5 2. Nc3 c6 3. Bf4 Bf5 4. e3 e6 5. h4 Bd6 6. Nge2 Nf6 7. f3 h5 8. Qd2 Be7 9. Bg5 Nh7 10. Bxe7 Qxe7 11. Ng3 Bg6 12. Bd3 Bxd3 13. Qxd3 Nf6 14. 0-0-0 c5 15. e4 cxd4 16. Qxd4 Nc6 17. Qa4 Qc5 18. exd5 Nxd5 19. Nxd5 exd5 20. Rhe1+ Kf8 21. Rd2 Rc8 22. Red1 Rd8 23. Qf4 Qb6 24. Nf5 Nb4 25. Kb1 g6 26. Qe5 Rg8 27. Qe7# 1-0

[Event "BRA-ch 90th"]
[Site "Natal"]
[Date "2024.12.13"]
[Round "1"]
[White "Mathias, Carlos Augusto De C"]
[Black "Bueno, Alfeu Varela Jr"]
[Result "0-1"]
[ECO "A80"]
[WhiteElo "1701"]
[BlackElo "2190"]
[PlyCount "74"]
[EventDate "2024.12.13"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "BRA"]
[SourceTitle "CB52_2024"]
[SourceDate "2024.12.25"]
[SourceVersion "1"]
[SourceVersionDate "2024.12.25"]
[SourceQuality "1"]

1. d4 e6 2. e3 f5 3. Nf3 Nf6 4. Bd3 b6 5. Nbd2 Bb7 6. 0-0 Be7 7. Ne5 d6 8. Nef3 0-0 9. Ng5 Qc8 10. Bc4 d5 11. Bd3 c5 12. c3 Nc6 13. f4 h6 14. Ngf3 Ba6 15. Bxa6 Qxa6 16. Ne5 Nxe5 17. fxe5 Ne4 18. Rf3 Qd3 19. Qe1 b5 20. a3 a5 21. Rh3 Ng5 22. Rg3 Ne4 23. Rf3 b4 24. Nxe4 fxe4 25. Rxf8+ Rxf8 26. axb4 axb4 27. Bd2 b3 28. Ra7 Rf7 29. Ra8+ Kh7 30. Rb8 Qc2 31. Qc1 c4 32. Rb6 Bg5 33. Rxe6 Ra7 34. Qf1 Be7 35. h3 Qxd2 36. Qf5+ Kg8 37. Qg6 Qxe3+ 0-1

[Event "BRA-ch 90th"]
[Site "Natal"]
[Date "2024.12.13"]
[Round "2"]
[White "Pereira Neto, Joao Maria De Lima"]
[Black "Mathias, Carlos Augusto De C"]
[Result "1-0"]
[ECO "B00"]
[WhiteElo "1800"]
[BlackElo "1701"]
[PlyCount "37"]
[EventDate "2024.12.13"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "BRA"]
[SourceTitle "CB52_2024"]
[SourceDate "2024.12.25"]
[SourceVersion "1"]
[SourceVersionDate "2024.12.25"]
[SourceQuality "1"]

1. e4 Nc6 2. Nf3 d6 3. Nc3 Bg4 4. Bc4 e6 5. 0-0 Nd4 6. Be2 Nxe2+ 7. Qxe2 a6 8. h3 Bh5 9. d4 Be7 10. Be3 Nf6 11. e5 Nd7 12. b4 Bg6 13. Rad1 c6 14. Bf4 d5 15. Qd2 h6 16. Ne2 Rc8 17. Bg3 c5 18. c3 cxd4 19. Nfxd4 1-0

[Event "BRA-ch Amateurs U2300"]
[Site "Sao Paulo"]
[Date "2024.06.01"]
[Round "5"]
[White "Ferreira de Souza, Ricardo"]
[Black "Mathias, Carlos Augusto De C"]
[Result "0-1"]
[ECO "B01"]
[WhiteElo "1593"]
[BlackElo "1717"]
[PlyCount "35"]
[EventDate "2024.05.30"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "CBM 220 Extra"]
[Source "ChessBase"]
[SourceDate "2024.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2024.07.31"]
[SourceQuality "1"]

1. e4 Nc6 2. d4 d5 3. exd5 Qxd5 4. Nf3 e5 5. c4 Qe4+ 6. Be3 Bg4 7. Nbd2 Bb4 8. dxe5 0-0-0 9. Qa4 Bxf3 10. gxf3 Bxd2+ 11. Kd1 Bxe3+ 12. Ke1 Bd2+ 13. Kd1 Bf4+ 14. Bd3 Rxd3+ 15. Kc2 Rxf3+ 16. Kd1 Qd3+ 17. Ke1 Qd2+ 18. Kf1 0-1

[Event "BRA-ch Amateurs U2300"]
[Site "Sao Paulo"]
[Date "2024.05.31"]
[Round "3"]
[White "Mathias, Carlos Augusto De C"]
[Black "Mobaier, Sergio"]
[Result "0-1"]
[ECO "B43"]
[WhiteElo "1717"]
[BlackElo "1914"]
[PlyCount "43"]
[EventDate "2024.05.30"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "CBM 220 Extra"]
[Source "ChessBase"]
[SourceDate "2024.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2024.07.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. Nc3 a6 4. d4 cxd4 5. Nxd4 Qc7 6. Be3 b5 7. Bd3 Bb7 8. Nce2 Nf6 9. Ng3 Nc6 10. f3 Be7 11. 0-0 0-0 12. Nxc6 dxc6 13. Qe2 c5 14. c4 b4 15. Bc2 Rad8 16. a3 a5 17. axb4 axb4 18. Qf2 Ra8 19. Ba4 Rfd8 20. Bb5 h6 21. Rxa8 Bxa8 22. Ra1 0-1

[Event "BRA-ch Amateurs U2300"]
[Site "Sao Paulo"]
[Date "2024.05.31"]
[Round "4"]
[White "Zhong, Lanxin"]
[Black "Mathias, Carlos Augusto De C"]
[Result "0-1"]
[ECO "B00"]
[WhiteElo "1714"]
[BlackElo "1717"]
[PlyCount "86"]
[EventDate "2024.05.30"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "CBM 220 Extra"]
[Source "ChessBase"]
[SourceDate "2024.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2024.07.31"]
[SourceQuality "1"]

1. e4 Nc6 2. d4 d5 3. e5 Bf5 4. Bb5 a6 5. Ba4 b5 6. Bb3 e6 7. Nf3 h6 8. 0-0 Na5 9. Be3 Qc8 10. Qd2 Nxb3 11. cxb3 Ne7 12. b4 Bxb1 13. Raxb1 Nf5 14. a3 Be7 15. Qd3 0-0 16. h3 Qd7 17. Bd2 Rfc8 18. Kh1 a5 19. g4 Nh4 20. Nxh4 Bxh4 21. bxa5 c5 22. dxc5 Rxc5 23. Rbc1 Rxc1 24. Rxc1 Bxf2 25. b4 Qb7 26. Qf3 Ba7 27. Kh2 Rc8 28. Kg2 Rxc1 29. Bxc1 Qc6 30. Bd2 Qc2 31. Qe2 Bd4 32. Kf1 Qb1+ 33. Be1 Qb3 34. Kg2 Qxa3 35. Bf2 Bxf2 36. Qxf2 Qxb4 37. a6 Qa4 38. a7 d4 39. Qxd4 Qxd4 40. a8Q+ Kh7 41. Qb8 b4 42. Qb7 Qd5+ 43. Qxd5 exd5 0-1

[Event "BRA-ch Amateurs U2300"]
[Site "Sao Paulo"]
[Date "2024.05.30"]
[Round "2"]
[White "Cardozo, Matheus Santos"]
[Black "Mathias, Carlos Augusto De C"]
[Result "1-0"]
[ECO "A46"]
[WhiteElo "1894"]
[BlackElo "1717"]
[PlyCount "122"]
[EventDate "2024.05.30"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "CBM 220 Extra"]
[Source "ChessBase"]
[SourceDate "2024.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2024.07.31"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 a6 3. g3 c5 4. Bg2 e6 5. 0-0 d5 6. c4 Nc6 7. Nc3 dxc4 8. dxc5 Qxd1 9. Rxd1 Bxc5 10. Bg5 h6 11. Bxf6 gxf6 12. Ne4 Be7 13. Rac1 Na5 14. Nd6+ Bxd6 15. Rxd6 Ke7 16. Rcd1 Rb8 17. Ne1 e5 18. Nc2 Bg4 19. Ne3 Be6 20. Rb6 Rhd8 21. Nd5+ Bxd5 22. Bxd5 Rd7 23. e4 Rc8 24. Rc1 Rdc7 25. Rc3 h5 26. Rf3 c3 27. bxc3 Nc6 28. Bxc6 Rxc6 29. Rxb7+ Ke6 30. Rb3 Rg8 31. h3 Rgc8 32. Kg2 Rd8 33. Rf5 Rd3 34. Rf3 Rxf3 35. Kxf3 f5 36. exf5+ Kxf5 37. Ke3 Rd6 38. c4 Rc6 39. Rc3 Ke6 40. g4 hxg4 41. hxg4 f5 42. gxf5+ Kxf5 43. f3 Rc5 44. a3 a5 45. a4 Ke6 46. Ke4 Kd6 47. Kd3 Rc7 48. Rb3 Rc5 49. Rb5 Kc6 50. Kc3 Kd6 51. Rb6+ Rc6 52. Rb5 Rc5 53. Kd3 Kc6 54. Rb8 Kc7 55. Rf8 Rc6 56. Rf5 Rd6+ 57. Kc3 Re6 58. Rh5 Kb6 59. Rh1 Rf6 60. Rh3 Kc5 61. Rg3 Rf4 1-0

[Event "BRA-ch Amateurs U2300"]
[Site "Sao Paulo"]
[Date "2024.05.30"]
[Round "1"]
[White "Mathias, Carlos Augusto De C"]
[Black "Passos, Rafael Moreira"]
[Result "0-1"]
[ECO "D32"]
[WhiteElo "1717"]
[BlackElo "1941"]
[PlyCount "85"]
[EventDate "2024.05.30"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "CBM 220 Extra"]
[Source "ChessBase"]
[SourceDate "2024.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2024.07.31"]
[SourceQuality "1"]

1. Nf3 d5 2. e3 Nf6 3. c4 e6 4. Nc3 a6 5. Be2 Bd6 6. cxd5 exd5 7. 0-0 0-0 8. b3 c5 9. d4 Nc6 10. dxc5 Bxc5 11. Bb2 Bg4 12. Rc1 Ba7 13. Qc2 Qd6 14. Rfe1 Rad8 15. Nb1 Rfe8 16. Ba3 Qc7 17. Qb2 Bb8 18. g3 Qd7 19. Rcd1 Qf5 20. Nbd2 Qh5 21. Qa1 Ne5 22. Nd4 Bxe2 23. Rxe2 Neg4 24. Nf1 Be5 25. Rc2 Qh3 26. Bb2 h5 27. Nf3 Bxb2 28. Qxb2 Ne4 29. Rd4 Ne5 30. Nxe5 Rxe5 31. Rb4 Ng5 32. Rf4 Re4 33. Qc3 Qe6 34. Kg2 Rxf4 35. exf4 Qe4+ 36. f3 Nxf3 37. Kf2 Nd4 38. Rd2 Nf5 39. Re2 Nd6 40. Qc7 Qd4+ 41. Kg2 Qf6 42. Re7 Rc8 43. Qb6 0-1

[Event "Joao Pessoa de Assis Memorial 3rd"]
[Site "Joao Pessoa"]
[Date "2023.10.22"]
[Round "5"]
[White "Mathias, Carlos Augusto De C"]
[Black "De Albuquerque, Helio Sergio"]
[Result "1-0"]
[ECO "A40"]
[WhiteElo "1519"]
[BlackElo "1053"]
[PlyCount "63"]
[EventDate "2023.10.20"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 216 Extra"]
[Source "ChessBase"]
[SourceDate "2023.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.30"]
[SourceQuality "1"]

1. d4 c6 2. Nc3 Qc7 3. Nf3 e6 4. g3 b6 5. Ne4 Bb7 6. Bf4 d6 7. Ned2 Ne7 8. e4 Ng6 9. Be3 a5 10. Bg2 Nd7 11. h4 h5 12. 0-0 Nf6 13. c4 Ng4 14. Bg5 f6 15. Be3 Nxe3 16. fxe3 d5 17. e5 Be7 18. cxd5 exd5 19. Qc2 Nf8 20. e4 c5 21. exf6 gxf6 22. e5 0-0-0 23. Rac1 Kb8 24. a3 Bc8 25. b4 c4 26. bxa5 b5 27. Qc3 Rg8 28. Kh2 Rg4 29. Rb1 Ba6 30. Ne1 Ne6 31. Bh3 f5 32. Bxg4 1-0

[Event "Joao Pessoa de Assis Memorial 3rd"]
[Site "Joao Pessoa"]
[Date "2023.10.21"]
[Round "4"]
[White "De Oliveira, Lincoln Robert Lem"]
[Black "Mathias, Carlos Augusto De C"]
[Result "1-0"]
[ECO "B15"]
[WhiteElo "1686"]
[BlackElo "1519"]
[PlyCount "84"]
[EventDate "2023.10.20"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 216 Extra"]
[Source "ChessBase"]
[SourceDate "2023.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.30"]
[SourceQuality "1"]

1. e4 c6 2. Nc3 d5 3. d4 dxe4 4. Nxe4 Nf6 5. Nxf6+ exf6 6. Bc4 Be7 7. Ne2 0-0 8. 0-0 Bg4 9. f3 Bh5 10. Bb3 Bd6 11. Bf4 Bg6 12. c4 a5 13. Bxd6 Qxd6 14. c5 Qc7 15. Nc3 Nd7 16. Qd2 Rad8 17. Qf2 f5 18. Rad1 Nf6 19. Na4 Nd5 20. Bxd5 Rxd5 21. Nb6 Rdd8 22. Qd2 Qe7 23. Rfe1 Qh4 24. g3 Qf6 25. Qd3 h5 26. Nc4 h4 27. Nxa5 Rd7 28. Nc4 hxg3 29. hxg3 Qg5 30. f4 Qf6 31. Ne5 Rd5 32. b4 Bh5 33. Rd2 Rfd8 34. Kf2 Ra8 35. a3 Qd8 36. Nc4 g5 37. Nb6 gxf4 38. Nxa8 Qxa8 39. gxf4 Qd8 40. Re5 Rd7 41. Rxf5 Bg6 42. Rg5 Rd5 1-0

[Event "Joao Pessoa de Assis Memorial 3rd"]
[Site "Joao Pessoa"]
[Date "2023.10.21"]
[Round "3"]
[White "Mathias, Carlos Augusto De C"]
[Black "Trigueiro, Hamilton Nobrega"]
[Result "1-0"]
[ECO "D00"]
[WhiteElo "1519"]
[BlackElo "1450"]
[PlyCount "109"]
[EventDate "2023.10.20"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 216 Extra"]
[Source "ChessBase"]
[SourceDate "2023.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.30"]
[SourceQuality "1"]

1. d4 d5 2. Nc3 Nf6 3. Bf4 a6 4. e3 Nc6 5. Bd3 h6 6. h3 e6 7. Nf3 Bb4 8. 0-0 0-0 9. a3 Bd6 10. Bxd6 Qxd6 11. Ne2 Re8 12. c4 e5 13. c5 Qe7 14. dxe5 Nxe5 15. Nxe5 Qxe5 16. Qc2 Ne4 17. Bxe4 dxe4 18. Rfd1 b5 19. b4 c6 20. Rac1 Be6 21. Nf4 a5 22. Rd4 Bc4 23. Rd6 axb4 24. axb4 Ra2 25. Qd1 Rb2 26. Qg4 Be6 27. Nxe6 Rxe6 28. Rd4 f5 29. Qh5 f4 30. Qxe5 Rxe5 31. exf4 Re6 32. Re1 Rf6 33. Rexe4 g5 34. Rd8+ Kg7 35. g3 gxf4 36. gxf4 Rc2 37. Red4 Rc4 38. Kf1 Rxf4 39. R8d7+ Rf7 40. Rg4+ Rxg4 41. Rxf7+ Kxf7 42. hxg4 Ke6 43. Ke2 Kd5 44. Kd3 Ke5 45. Ke3 Kd5 46. f4 Ke6 47. Ke4 Kf6 48. Kd4 Ke6 49. Ke4 Kf6 50. f5 Kg5 51. Ke5 Kxg4 52. f6 h5 53. f7 h4 54. f8Q h3 55. Qg8+ 1-0

[Event "Joao Pessoa de Assis Memorial 3rd"]
[Site "Joao Pessoa"]
[Date "2023.10.20"]
[Round "2"]
[White "Dos Santos, Josemberg C"]
[Black "Mathias, Carlos Augusto De C"]
[Result "1-0"]
[ECO "A07"]
[WhiteElo "1699"]
[BlackElo "1519"]
[PlyCount "59"]
[EventDate "2023.10.20"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 216 Extra"]
[Source "ChessBase"]
[SourceDate "2023.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.30"]
[SourceQuality "1"]

1. g3 Nf6 2. Bg2 d5 3. d3 c6 4. Nf3 Nbd7 5. 0-0 e5 6. Nc3 h6 7. e4 d4 8. Ne2 Be7 9. Nd2 h5 10. h4 Ng4 11. Nf3 f6 12. c3 c5 13. a4 g5 14. a5 a6 15. Qa4 gxh4 16. Nxh4 Nh6 17. Bxh6 Rxh6 18. f4 Rh8 19. Bh3 Bd6 20. Be6 Bc7 21. Nf5 b5 22. axb6 Bxb6 23. fxe5 Kf8 24. Nd6 Nxe5 25. Nxc8 Rxc8 26. Bxc8 Qxc8 27. Rxf6+ Ke7 28. Rxb6 Qh3 29. Rb7+ Kf6 30. Qxa6+ 1-0

[Event "Joao Pessoa de Assis Memorial 3rd"]
[Site "Joao Pessoa"]
[Date "2023.10.20"]
[Round "1"]
[White "Mathias, Carlos Augusto De C"]
[Black "Roselli, Danilo Palomares"]
[Result "0-1"]
[ECO "A85"]
[WhiteElo "1519"]
[BlackElo "1887"]
[PlyCount "90"]
[EventDate "2023.10.20"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 216 Extra"]
[Source "ChessBase"]
[SourceDate "2023.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.30"]
[SourceQuality "1"]

1. c4 f5 2. Nf3 Nf6 3. Nc3 g6 4. e3 Bg7 5. d4 0-0 6. Be2 d6 7. 0-0 Qe8 8. Nd5 Na6 9. Nxf6+ Bxf6 10. d5 e5 11. dxe6 Bxe6 12. Rb1 Nc5 13. Nd2 Qe7 14. b4 Nd7 15. f4 Bf7 16. Nf3 a5 17. a3 axb4 18. axb4 Ra2 19. Kh1 Rfa8 20. Qd3 Nb6 21. Nd2 Rxd2 22. Qxd2 Nxc4 23. Bxc4 Bxc4 24. Rg1 Ba2 25. Bb2 Bxb1 26. Bxf6 Qxf6 27. Rxb1 Ra1 28. Rg1 c6 29. h3 Ra3 30. Re1 d5 31. b5 Qc3 32. Qxc3 Rxc3 33. bxc6 bxc6 34. Kg1 Rc2 35. Kf1 Kg7 36. Re2 Rxe2 37. Kxe2 Kf6 38. g4 fxg4 39. hxg4 h5 40. gxh5 gxh5 41. Kd3 Kf5 42. Kd4 h4 43. Kc5 h3 44. Kxc6 Ke4 45. Kd6 h2 0-1

[Event "Joao Pessoa op"]
[Site "Joao Pessoa"]
[Date "2023.03.22"]
[Round "3"]
[White "Mathias, Carlos Augusto De C"]
[Black "Melo, Igor De Souza"]
[Result "0-1"]
[ECO "A00"]
[WhiteElo "1511"]
[BlackElo "1763"]
[PlyCount "86"]
[EventDate "2023.03.17"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d3 d5 2. Nd2 e5 3. e4 d4 4. Be2 Nc6 5. Bf3 Be6 6. Ne2 Qd7 7. Ng3 g6 8. Nb3 0-0-0 9. Bd2 Kb8 10. a3 h5 11. Na5 Nxa5 12. Bxa5 h4 13. Nf1 f5 14. Bb4 Nf6 15. Bxf8 Rhxf8 16. Nd2 f4 17. h3 g5 18. Nb3 Qe7 19. Qd2 Rh8 20. 0-0-0 Bxb3 21. cxb3 Qe6 22. b4 Qa2 23. Qc2 Rd6 24. Qb1 Qe6 25. Be2 g4 26. Kd2 f3 27. Bf1 Nh5 28. Qc2 fxg2 29. Bxg2 Nf4 30. Bf1 gxh3 31. b5 Rd7 32. Kc1 Rg7 33. Kb1 Rhg8 34. Rc1 Qd7 35. Rh2 Qxb5 36. Bxh3 Qxd3 37. Qxd3 Nxd3 38. Rc2 Rg1+ 39. Ka2 Nc1+ 40. Kb1 Nb3+ 41. Ka2 d3 42. Kxb3 dxc2 43. Kxc2 Re1 0-1

[Event "Joao Pessoa op"]
[Site "Joao Pessoa"]
[Date "2023.03.18"]
[Round "4"]
[White "Leite, Joao Carlos Zirpoli"]
[Black "Mathias, Carlos Augusto De C"]
[Result "0-1"]
[ECO "B07"]
[WhiteElo "1638"]
[BlackElo "1511"]
[PlyCount "77"]
[EventDate "2023.03.17"]
[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 d6 2. d4 Nd7 3. Be2 e5 4. d5 Be7 5. Be3 Bg5 6. Bxg5 Qxg5 7. Nf3 Qe7 8. Nc3 a6 9. Qd2 b5 10. a3 Nf8 11. Qg5 f6 12. Qd2 Ng6 13. g3 Bh3 14. 0-0-0 Nh6 15. Ne1 Ng4 16. Bxg4 Bxg4 17. f3 Bd7 18. Nd3 a5 19. f4 Qd8 20. fxe5 dxe5 21. Nc5 Bg4 22. Rdf1 b4 23. axb4 axb4 24. Nb1 Ra1 25. Qxb4 0-0 26. h3 Bd7 27. Rd1 Qe7 28. Qc4 Kh8 29. Ne6 Bxe6 30. dxe6 f5 31. h4 c5 32. Rd7 Qf6 33. Rhd1 Ne7 34. Qxc5 Qh6+ 35. R1d2 fxe4 36. Qg1 e3 37. Re2 Qxe6 38. Rxe3 Qxd7 39. b3 0-1

[Event "Joao Pessoa op"]
[Site "Joao Pessoa"]
[Date "2023.03.17"]
[Round "1"]
[White "Lima, Artur Tin Lun Dai"]
[Black "Mathias, Carlos Augusto De C"]
[Result "1-0"]
[ECO "C41"]
[WhiteElo "1975"]
[BlackElo "1511"]
[PlyCount "85"]
[EventDate "2023.03.17"]
[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 d6 2. d4 Nd7 3. Nc3 e5 4. Nf3 Be7 5. Bc4 c6 6. 0-0 Bf6 7. a4 a5 8. dxe5 dxe5 9. Qe2 Ne7 10. Rd1 Ng6 11. b3 0-0 12. Ba3 Be7 13. Bd6 Bxd6 14. Rxd6 Qe7 15. Qd2 Nf6 16. h3 Nf4 17. Rd1 Be6 18. Bxe6 Nxe6 19. Nxe5 Rfd8 20. Nf3 h6 21. e5 Nh7 22. Ne4 Nhf8 23. Qe3 Qc7 24. Nd4 Qe7 25. Nxe6 Rxd6 26. Rxd6 Nxe6 27. Nc5 Nxc5 28. Qxc5 Qc7 29. Qd4 c5 30. Qd5 Re8 31. f4 Rf8 32. Rd7 Qc8 33. Qxb7 c4 34. Qxc8 Rxc8 35. Rd5 cxb3 36. cxb3 Rc1+ 37. Kf2 Rb1 38. Rb5 Kf8 39. Rb7 h5 40. Kg3 Rb2 41. f5 Re2 42. f6 Rxe5 43. Rb8+ 1-0

[Event "Joao Pessoa op"]
[Site "Joao Pessoa"]
[Date "2023.03.17"]
[Round "2"]
[White "Mathias, Carlos Augusto De C"]
[Black "Macedo, Rafael Magalhaes"]
[Result "1-0"]
[ECO "A00"]
[WhiteElo "1511"]
[PlyCount "37"]
[EventDate "2023.03.17"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d3 e5 2. Nd2 Nf6 3. e4 g6 4. Be2 Bg7 5. Nf1 Nc6 6. Ng3 Nd4 7. Bg5 h6 8. Bd2 d6 9. Nf3 Bg4 10. Nxd4 Bxe2 11. Ndxe2 0-0 12. Qc1 Ng4 13. h3 Qh4 14. hxg4 Qxg4 15. Bxh6 Bxh6 16. Qxh6 Qh5 17. Rxh5 gxh5 18. Nxh5 Rfe8 19. Qg7# 1-0

[Event "BRA-ch 88th"]
[Site "Recife"]
[Date "2022.12.23"]
[Round "11"]
[White "De Mesquita, Igor Ming"]
[Black "Mathias, Carlos Augusto De C"]
[Result "0-1"]
[ECO "C41"]
[WhiteElo "1769"]
[BlackElo "1486"]
[PlyCount "51"]
[EventDate "2022.12.15"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "BRA"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 Nbd7 4. Nf3 e5 5. dxe5 dxe5 6. Bc4 Be7 7. 0-0 0-0 8. Qe2 c6 9. Rd1 Qc7 10. h3 a5 11. a3 b5 12. Ba2 Ba6 13. Qe1 Bb7 14. Bg5 Rfe8 15. Bh4 h6 16. Bg3 Nh5 17. Bh2 Nf4 18. Rxd7 Nxh3+ 19. gxh3 Qxd7 20. Nxe5 Qxh3 21. Bxf7+ Kh7 22. Bg6+ Kg8 23. Bxe8 Rxe8 24. Rd1 Bf6 25. Nd7 Bxc3 26. Qxc3 0-1

[Event "BRA-ch 88th"]
[Site "Recife"]
[Date "2022.12.22"]
[Round "10"]
[White "Bentes, Joao Roberto Rocha"]
[Black "Mathias, Carlos Augusto De C"]
[Result "0-1"]
[ECO "A10"]
[WhiteElo "1743"]
[BlackElo "1486"]
[PlyCount "138"]
[EventDate "2022.12.15"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "BRA"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. c4 d6 2. b3 Nf6 3. Bb2 Nbd7 4. g3 e5 5. Bg2 Be7 6. d3 0-0 7. Nc3 c6 8. e3 Re8 9. Nge2 Nf8 10. 0-0 Bg4 11. Qd2 Qd7 12. f4 Bh3 13. Na4 Bxg2 14. Kxg2 e4 15. Rab1 Bd8 16. Nac3 exd3 17. Qxd3 Ng4 18. e4 Bb6 19. Rf3 Rad8 20. Na4 Bc7 21. Re1 Ng6 22. Nd4 Ne7 23. Nc3 Ba5 24. Re2 a6 25. a3 Qc8 26. b4 Bc7 27. Nd1 c5 28. Nc2 Qe6 29. h3 Nh6 30. Qc3 f6 31. Rf1 Qf7 32. Rfe1 Ng6 33. a4 Qd7 34. a5 Nf7 35. Nf2 h5 36. Rd1 Qc6 37. Qb3 h4 38. Rd5 hxg3 39. Kxg3 Bb8 40. Qc3 Qc7 41. Ng4 Nfh8 42. h4 Rf8 43. h5 Ne7 44. Rd1 d5 45. Qf3 dxe4 46. Rxe4 Rxd1 47. Qxd1 Nf5+ 48. Kh3 Rd8 49. Qe1 Qf7 50. Nxf6+ gxf6 51. Qe2 Kf8 52. Re6 Re8 53. Rxe8+ Qxe8 54. Qxe8+ Kxe8 55. Bxf6 Nf7 56. b5 Bxf4 57. Kg4 Ne3+ 58. Nxe3 Bxe3 59. Bc3 Nd6 60. Kf3 Bh6 61. b6 Nxc4 62. Ke4 Bd2 63. Ba1 Nxa5 64. h6 Bxh6 65. Bc3 Nc4 66. Kd5 Nxb6+ 67. Kd6 Na4 68. Ba1 Kd8 69. Bf6+ Kc8 0-1

[Event "BRA-ch 88th"]
[Site "Recife"]
[Date "2022.12.21"]
[Round "9"]
[White "Mathias, Carlos Augusto De C"]
[Black "De Vasconcelos, Arthur Silva"]
[Result "0-1"]
[ECO "A48"]
[WhiteElo "1486"]
[PlyCount "62"]
[EventDate "2022.12.15"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "BRA"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. e3 Bg7 4. Bc4 0-0 5. 0-0 d6 6. c3 Bg4 7. Nbd2 e5 8. Qb3 e4 9. Bxf7+ Rxf7 10. Ng5 d5 11. Nxf7 Kxf7 12. Qxb7 Nbd7 13. f3 exf3 14. Nxf3 Kg8 15. Qb3 c6 16. Nd2 Be2 17. Rf2 Rb8 18. Qc2 Ba6 19. e4 Ng4 20. Rf4 Ne3 21. Qa4 Qg5 22. Rf2 Rf8 23. Rxf8+ Bxf8 24. g3 Bb5 25. Qxa7 Qg4 26. c4 Qd1+ 27. Kf2 Ng4+ 28. Kg2 Qe2+ 29. Kh3 Qxh2+ 30. Kxg4 Qh5+ 31. Kf4 Bh6# 0-1

[Event "BRA-ch 88th"]
[Site "Recife"]
[Date "2022.12.20"]
[Round "8"]
[White "Cavalcante, Rodrigo Moreira"]
[Black "Mathias, Carlos Augusto De C"]
[Result "1-0"]
[ECO "A55"]
[WhiteElo "1801"]
[BlackElo "1486"]
[PlyCount "67"]
[EventDate "2022.12.15"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "BRA"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 d6 3. Nc3 Nbd7 4. e4 e5 5. Nf3 c6 6. Bg5 Be7 7. Be2 Qc7 8. 0-0 Nf8 9. d5 h6 10. Be3 g5 11. Nd2 Ng6 12. g3 Bh3 13. Re1 Bd7 14. b4 Rg8 15. Kh1 Qc8 16. f3 Nh7 17. Nb3 h5 18. c5 g4 19. f4 h4 20. f5 Ngf8 21. Rc1 hxg3 22. hxg3 Qd8 23. Na5 Rb8 24. cxd6 Bg5 25. Qd2 Qf6 26. Kg2 Bxe3 27. Qxe3 Qxd6 28. Qxa7 Nf6 29. Red1 cxd5 30. Nxd5 Nxd5 31. Rxd5 Qxb4 32. Qxb8+ Ke7 33. f6+ Ke6 34. Qxe5# 1-0

[Event "BRA-ch 88th"]
[Site "Recife"]
[Date "2022.12.19"]
[Round "7"]
[White "Mathias, Carlos Augusto De C"]
[Black "Fontoura, Alexandre Souza"]
[Result "0-1"]
[ECO "B06"]
[WhiteElo "1486"]
[BlackElo "1821"]
[PlyCount "75"]
[EventDate "2022.12.15"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "BRA"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. e4 c6 2. Nc3 g6 3. Bc4 Bg7 4. Nge2 b5 5. Bb3 a5 6. a3 d6 7. 0-0 Nf6 8. d3 0-0 9. Nb1 Nbd7 10. f4 Qb6+ 11. Kh1 Ng4 12. Qe1 Ne3 13. Rf3 Ng4 14. h3 Ngf6 15. Be3 Qc7 16. Ng3 a4 17. Ba2 Rb8 18. c3 c5 19. d4 c4 20. Nd2 Bb7 21. Rc1 Rfe8 22. Rf1 e5 23. f5 d5 24. fxg6 hxg6 25. Bb1 Nh7 26. Qf2 Re7 27. Nf3 dxe4 28. Bxe4 f5 29. Bxb7 Rxb7 30. dxe5 Nxe5 31. Nxe5 Bxe5 32. Ne2 Nf6 33. Qf3 Ne4 34. Rfd1 Nc5 35. Bxc5 Qxc5 36. Rd8+ Kg7 37. Rd5 Qc7 38. Qf2 0-1

[Event "BRA-ch 88th"]
[Site "Recife"]
[Date "2022.12.19"]
[Round "6"]
[White "Viana, Daniel Fernandes"]
[Black "Mathias, Carlos Augusto De C"]
[Result "0-1"]
[ECO "A54"]
[WhiteElo "1813"]
[BlackElo "1486"]
[PlyCount "104"]
[EventDate "2022.12.15"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "BRA"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 d6 3. Nf3 Nbd7 4. Nc3 e5 5. Bg5 c6 6. Qc2 Be7 7. e3 Qc7 8. Bd3 a5 9. 0-0 h6 10. Bxf6 Nxf6 11. d5 Bg4 12. Nd2 Qc8 13. Rae1 h5 14. f4 h4 15. fxe5 dxe5 16. Bf5 Bxf5 17. Qxf5 Qxf5 18. Rxf5 Rh5 19. Rf3 Nd7 20. Ref1 f6 21. Nde4 Bb4 22. a3 Bxc3 23. bxc3 Ke7 24. g4 hxg3 25. Nxg3 Rg5 26. Kh1 Nc5 27. Nf5+ Kd7 28. Rh3 Ne4 29. Rh7 Rg8 30. Nh6 Rh5 31. Nxg8 Rxh7 32. Rb1 Nc5 33. dxc6+ bxc6 34. Rb8 Rh3 35. Rf8 Ne6 36. Rf7+ Kd6 37. Ne7 Kc5 38. Nf5 Kxc4 39. Re7 Nc5 40. Rc7 Kd5 41. Rxg7 Ke4 42. Kg2 Rh8 43. Ng3+ Kxe3 44. Rc7 Rg8 45. Rxc6 Ne4 46. Re6 Kf4 47. Rc6 Nxg3 48. hxg3+ Rxg3+ 49. Kf2 f5 50. Rc5 e4 51. Rc8 Rf3+ 52. Ke2 a4 0-1

[Event "BRA-ch 88th"]
[Site "Recife"]
[Date "2022.12.18"]
[Round "5"]
[White "Mathias, Carlos Augusto De C"]
[Black "Cavalcante, Guilherme Hacker"]
[Result "1-0"]
[ECO "B32"]
[WhiteElo "1486"]
[PlyCount "33"]
[EventDate "2022.12.15"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "BRA"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nxd4 5. Qxd4 Nf6 6. e5 Nh5 7. g4 e6 8. gxh5 d5 9. exd6 Bxd6 10. Qxg7 Rf8 11. Nc3 Bd7 12. Be3 Qc7 13. 0-0-0 Be5 14. Qxh7 0-0-0 15. Bh6 Rh8 16. Qxf7 Rxh6 17. Bd3 1-0

[Event "BRA-ch 88th"]
[Site "Recife"]
[Date "2022.12.17"]
[Round "4"]
[White "Macedo, Maximo Valerio"]
[Black "Mathias, Carlos Augusto De C"]
[Result "1-0"]
[ECO "A46"]
[WhiteElo "1842"]
[BlackElo "1486"]
[PlyCount "73"]
[EventDate "2022.12.15"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "BRA"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 d6 3. g3 Nbd7 4. Bg2 e5 5. 0-0 Be7 6. Nc3 c6 7. Nh4 Qc7 8. Nf5 Bf8 9. e4 Nb6 10. dxe5 dxe5 11. Qf3 Bxf5 12. Qxf5 Be7 13. Rd1 0-0 14. b3 Rfd8 15. Bb2 Nbd7 16. Ne2 Bc5 17. Nc1 Nf8 18. Nd3 Bd6 19. Rd2 Ng6 20. Rad1 Qe7 21. h4 h5 22. Bf3 Bc7 23. Bxh5 Nxh5 24. Qxh5 Ba5 25. Re2 Rac8 26. Rf1 Bb6 27. Qg4 Bd4 28. Bc1 Nf8 29. Kg2 b6 30. h5 Rd6 31. Ne1 Nh7 32. Nf3 Kh8 33. Nh4 Qf8 34. Nf5 Rf6 35. Rh1 Re6 36. Nxd4 exd4 37. e5 1-0

[Event "BRA-ch 88th"]
[Site "Recife"]
[Date "2022.12.17"]
[Round "3"]
[White "Mathias, Carlos Augusto De C"]
[Black "Cabral, Pedro Costa"]
[Result "1-0"]
[ECO "D04"]
[WhiteElo "1486"]
[PlyCount "26"]
[EventDate "2022.12.15"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "BRA"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. e3 Bf5 4. Bd3 Ne4 5. 0-0 e6 6. c4 c5 7. Nc3 Bd6 8. cxd5 cxd4 9. exd4 exd5 10. Re1 0-0 11. Nxe4 dxe4 12. Bxe4 Qd7 13. Bxf5 Qxf5 1-0

[Event "BRA-ch 88th"]
[Site "Recife"]
[Date "2022.12.16"]
[Round "2"]
[White "De Andrade, Dalson Holanda Cav"]
[Black "Mathias, Carlos Augusto De C"]
[Result "1-0"]
[ECO "A55"]
[WhiteElo "1919"]
[BlackElo "1486"]
[PlyCount "120"]
[EventDate "2022.12.15"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "BRA"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 d6 3. Nc3 Nbd7 4. e4 e5 5. Nf3 c6 6. Be2 Be7 7. Bg5 Qa5 8. 0-0 Qc7 9. d5 h6 10. Bxf6 Bxf6 11. Nd2 Nf8 12. Bg4 Ng6 13. g3 Bxg4 14. Qxg4 a6 15. a4 c5 16. Rab1 h5 17. Qe2 h4 18. b4 b6 19. bxc5 bxc5 20. Rb3 Rb8 21. Rxb8+ Qxb8 22. Rb1 Qc8 23. Nf1 Bd8 24. Ne3 hxg3 25. fxg3 Ne7 26. Qg4 0-0 27. Nf5 Nxf5 28. Qxf5 Qc7 29. Rb3 Bf6 30. Qf2 Rb8 31. Qb2 Rxb3 32. Qxb3 Bg5 33. Kf2 Bd2 34. Ne2 Bb4 35. h4 Qb8 36. Kg2 Qd8 37. Ng1 Qd7 38. Nh3 f6 39. Nf2 f5 40. exf5 Qxf5 41. Qd3 Qd7 42. Qc2 Qe8 43. Nh3 e4 44. Ng5 Qe5 45. Qxe4 Bc3 46. Qxe5 Bxe5 47. Ne6 Kf7 48. Kf3 Kf6 49. g4 Bc3 50. Ke4 g6 51. h5 gxh5 52. gxh5 Bd2 53. Nc7 a5 54. Nb5 Ke7 55. Kf5 Bc1 56. Kg6 Bf4 57. h6 Kf8 58. h7 Be5 59. Nxd6 Ke7 60. Nf5+ Kf8 1-0

[Event "BRA-ch 88th"]
[Site "Recife"]
[Date "2022.12.15"]
[Round "1"]
[White "Mathias, Carlos Augusto De C"]
[Black "Almeida Junior, Alvaro Alves de"]
[Result "0-1"]
[ECO "B20"]
[WhiteElo "1486"]
[BlackElo "2057"]
[PlyCount "44"]
[EventDate "2022.12.15"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "BRA"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. e4 c5 2. b4 cxb4 3. a3 bxa3 4. Nxa3 e6 5. Nf3 Nc6 6. Be2 Nf6 7. d3 d5 8. e5 Nd7 9. d4 f6 10. Bb2 fxe5 11. dxe5 Bb4+ 12. Kf1 0-0 13. h4 Qb6 14. Rb1 Ndxe5 15. Bxe5 Nxe5 16. Nd4 Qc5 17. Nab5 Nc6 18. Nf3 a6 19. Nbd4 Nxd4 20. Nxd4 e5 21. Nf3 e4 22. Qd4 exf3 0-1

[Event "Natal zt 2.4"]
[Site "Natal"]
[Date "2022.10.08"]
[Round "9"]
[White "Mathias, Carlos Augusto De C"]
[Black "Gomes, Marco Tulio Caldeir"]
[Result "0-1"]
[ECO "D05"]
[WhiteElo "1490"]
[BlackElo "1655"]
[PlyCount "66"]
[EventDate "2022.10.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 e6 3. a3 Be7 4. e3 b6 5. Bd3 Bb7 6. Nbd2 c5 7. 0-0 0-0 8. b3 d5 9. Bb2 Nc6 10. Ne5 cxd4 11. exd4 Qc7 12. f4 g6 13. g4 Bc8 14. h4 Nd7 15. g5 f5 16. Nxc6 Qxc6 17. Qe2 a6 18. c4 Bb7 19. Nf3 Rfe8 20. Rac1 Bd8 21. h5 Kf7 22. Rfe1 dxc4 23. hxg6+ hxg6 24. Qh2 Qxf3 25. Qh7+ Kf8 26. d5 Qg3+ 27. Kf1 Qf3+ 28. Kg1 Qg3+ 29. Kf1 Qxf4+ 30. Ke2 exd5+ 31. Kd1 Qf3+ 32. Re2 Qxd3+ 33. Rd2 Qxb3+ 0-1

[Event "Natal zt 2.4"]
[Site "Natal"]
[Date "2022.10.07"]
[Round "8"]
[White "De Almeida, Olivan Duarte"]
[Black "Mathias, Carlos Augusto De C"]
[Result "0-1"]
[ECO "B01"]
[WhiteElo "1516"]
[BlackElo "1490"]
[PlyCount "112"]
[EventDate "2022.10.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Nf6 3. c4 e6 4. dxe6 Bxe6 5. d4 Bb4+ 6. Bd2 Bxd2+ 7. Qxd2 0-0 8. Nc3 Re8 9. 0-0-0 c6 10. Bd3 Na6 11. a3 Nc7 12. h4 a6 13. Nge2 b5 14. cxb5 cxb5 15. Nf4 Bb3 16. Rde1 Rc8 17. Rxe8+ Qxe8 18. Re1 Qf8 19. Bf5 Rd8 20. Ne4 Nxe4 21. Bxe4 Qd6 22. d5 a5 23. g3 b4 24. Qe3 Ba4 25. b3 Bd7 26. a4 Na6 27. Kb2 Re8 28. Qd2 Qe5+ 29. Ka2 f5 30. Qe2 Qxe4 31. Qxe4 Rxe4 32. Rc1 Rd4 33. Rc2 Kf7 34. Kb2 Ke8 35. f3 Ke7 36. Re2+ Kd6 37. Ne6 Rxd5 38. Nxg7 Rc5 39. Rd2+ Ke7 40. Nh5 Rc3 41. Rd5 Be6 42. Rxa5 Rxb3+ 43. Kc2 Rc3+ 44. Kd2 Rc6 45. Nf4 Bd7 46. Nd3 b3 47. Ne5 Rc2+ 48. Kd1 Nc5 49. Nxd7 Kxd7 50. Ra7+ Kd6 51. Rxh7 Nxa4 52. Rh6+ Kc5 53. Rh8 Nc3+ 54. Ke1 b2 55. Rc8+ Kb4 56. Rb8+ Nb5 0-1

[Event "Natal zt 2.4"]
[Site "Natal"]
[Date "2022.10.06"]
[Round "7"]
[White "Mathias, Carlos Augusto De C"]
[Black "Macedo, Alexandre Soares"]
[Result "0-1"]
[ECO "A48"]
[WhiteElo "1490"]
[BlackElo "1734"]
[PlyCount "66"]
[EventDate "2022.10.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 c5 2. e3 Nf6 3. Nf3 g6 4. Be2 Bg7 5. 0-0 0-0 6. c3 b6 7. Na3 Bb7 8. Qb3 cxd4 9. exd4 Nc6 10. Qd1 e6 11. Bf4 Ne8 12. Qd2 Ne7 13. Bh6 Bxh6 14. Qxh6 Nf5 15. Qd2 Ned6 16. Ne5 f6 17. Nd3 Ne4 18. Qc2 Ng5 19. Ne1 Nh4 20. f3 Qc7 21. Qc1 a6 22. Qe3 Rae8 23. Qf2 Nf5 24. Nac2 e5 25. dxe5 Rxe5 26. Nd3 Re7 27. Rfe1 a5 28. Bf1 Rfe8 29. Rxe7 Rxe7 30. Re1 Rxe1 31. Ndxe1 Bc6 32. Nd4 Nxd4 33. Qxd4 Kf7 0-1

[Event "Natal zt 2.4"]
[Site "Natal"]
[Date "2022.10.06"]
[Round "6"]
[White "Mathias, Carlos Augusto De C"]
[Black "Timossi, Lucas Jose Santiago"]
[Result "1-0"]
[ECO "D00"]
[WhiteElo "1490"]
[BlackElo "1449"]
[PlyCount "139"]
[EventDate "2022.10.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 d5 2. Nc3 Nf6 3. Nf3 Bf5 4. Bf4 e6 5. a3 c5 6. e3 Nc6 7. h3 Be7 8. Bd3 Bg6 9. 0-0 Rc8 10. Re1 c4 11. Bxg6 hxg6 12. e4 Nh5 13. Bh2 dxe4 14. Nxe4 Qd5 15. Qd2 Nf6 16. Nc3 Qf5 17. Qe2 g5 18. d5 Nxd5 19. Nxd5 Qxd5 20. Rad1 Qf5 21. Qxc4 0-0 22. Qa4 Rfd8 23. b4 g4 24. hxg4 Qxg4 25. Qb3 Rxd1 26. Rxd1 Rd8 27. Rxd8+ Bxd8 28. Qd3 Bb6 29. c4 Nd4 30. Ne5 Qe2 31. Qxe2 Nxe2+ 32. Kf1 Nc3 33. Nd7 Bd4 34. f3 Na4 35. Be5 Bxe5 36. Nxe5 f6 37. Nd3 Nb6 38. c5 Nc4 39. a4 Kf7 40. Ke2 Ke7 41. f4 e5 42. f5 Kd7 43. Kf3 Kc6 44. g3 Kd5 45. Nf2 Nb2 46. a5 Kc4 47. a6 bxa6 48. c6 Na4 49. c7 Nb6 50. Nd1 Kb5 51. Kg4 Kc6 52. Ne3 Kxc7 53. Kh5 Kd6 54. Kg6 Nd7 55. Kxg7 e4 56. Kf7 Ke5 57. Ke7 Nb8 58. g4 Nc6+ 59. Kf7 Nxb4 60. g5 fxg5 61. f6 Nd5 62. Nxd5 Kxd5 63. Kg7 e3 64. f7 e2 65. f8Q e1Q 66. Qd8+ Kc4 67. Qc7+ Kd3 68. Qd6+ Kc2 69. Qg6+ Qe4 70. Qxe4+ 1-0

[Event "Natal zt 2.4"]
[Site "Natal"]
[Date "2022.10.05"]
[Round "5"]
[White "Alves, Luiz Henrique De Ar"]
[Black "Mathias, Carlos Augusto De C"]
[Result "1-0"]
[ECO "C20"]
[WhiteElo "1664"]
[BlackElo "1490"]
[PlyCount "67"]
[EventDate "2022.10.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. c4 d6 2. e4 e5 3. Nf3 Nf6 4. d3 Be7 5. Nc3 c6 6. Bg5 Nbd7 7. Be2 Nf8 8. c5 Ng6 9. cxd6 Qxd6 10. 0-0 0-0 11. d4 Qc7 12. dxe5 Nxe5 13. Nxe5 Qxe5 14. f4 Qc7 15. Bxf6 Bxf6 16. e5 Be7 17. Kh1 Bf5 18. Bg4 Rad8 19. Qf3 Bd3 20. Rfe1 Ba6 21. f5 Bc5 22. f6 g6 23. Qf4 Rfe8 24. Qh6 Bf8 25. Qf4 b6 26. Re3 Bc8 27. Rae1 Bxg4 28. Qxg4 Qd7 29. Qh4 Qd4 30. Re4 Qd2 31. e6 fxe6 32. f7+ Kxf7 33. Qxh7+ Bg7 34. Rf1+ 1-0

[Event "Natal zt 2.4"]
[Site "Natal"]
[Date "2022.10.05"]
[Round "4"]
[White "Gomes, Genildo de Souza"]
[Black "Mathias, Carlos Augusto De C"]
[Result "1-0"]
[ECO "B07"]
[WhiteElo "1685"]
[BlackElo "1490"]
[PlyCount "69"]
[EventDate "2022.10.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 d6 2. e4 Nf6 3. Bd3 Nbd7 4. Ne2 e5 5. c3 Be7 6. 0-0 c6 7. f4 Qc7 8. Ng3 g6 9. Be3 h5 10. h3 h4 11. Nh1 Nh5 12. Qf3 Ndf6 13. fxe5 dxe5 14. dxe5 Qxe5 15. Bd4 Bc5 16. Qe3 Bxd4 17. cxd4 Qe7 18. e5 Nd5 19. Qf2 Nhf4 20. Be4 Be6 21. Nc3 Qg5 22. Kh2 Qe7 23. Rac1 g5 24. Qf3 Rg8 25. Nf2 f5 26. exf6 Nxf6 27. Rfe1 Qd6 28. Kh1 0-0-0 29. d5 Bd7 30. dxc6 bxc6 31. Nb5 Qb4 32. Bxc6 Kb8 33. Qe3 Qa5 34. Qe5+ Kc8 35. Nd6+ 1-0

[Event "Natal zt 2.4"]
[Site "Natal"]
[Date "2022.10.04"]
[Round "2"]
[White "Da Costa, Loyson Rodrigues"]
[Black "Mathias, Carlos Augusto De C"]
[Result "1-0"]
[ECO "A53"]
[WhiteElo "1872"]
[BlackElo "1490"]
[PlyCount "79"]
[EventDate "2022.10.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 d6 2. c4 Nf6 3. Nc3 Nbd7 4. e4 e5 5. d5 Be7 6. Bd3 h6 7. Nge2 Nf8 8. 0-0 Bg4 9. Qc2 Nh5 10. f4 Bd7 11. f5 Nh7 12. Be3 Bg5 13. Qd2 N5f6 14. b4 Bxe3+ 15. Qxe3 Ng5 16. h3 a5 17. a3 0-0 18. c5 Qb8 19. b5 dxc5 20. Qxc5 Rc8 21. Rfc1 Re8 22. a4 Qd8 23. Ng3 b6 24. Qe3 Bc8 25. Rf1 Qd6 26. Be2 Ngh7 27. Rfc1 Nd7 28. Nf1 Nc5 29. Nd2 Qf6 30. Nd1 Qh4 31. Rc3 Qe7 32. Nf2 Nf6 33. Nd3 Nfd7 34. Nb3 Nxd3 35. Bxd3 Nf6 36. Qc1 Ra7 37. Qc2 Qd6 38. Rc6 Qb4 39. Rc4 Qd6 40. Qc3 1-0

[Event "Natal zt 2.4"]
[Site "Natal"]
[Date "2022.10.04"]
[Round "3"]
[White "Mathias, Carlos Augusto De C"]
[Black "Ferreira, Enzo Suzarte"]
[Result "0-1"]
[ECO "D00"]
[WhiteElo "1490"]
[BlackElo "1898"]
[PlyCount "82"]
[EventDate "2022.10.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. Nc3 d5 4. h3 Bg7 5. Bf4 0-0 6. e3 c5 7. Nb5 Na6 8. Be2 Bd7 9. Nc3 cxd4 10. exd4 Qb6 11. Rb1 Ne4 12. 0-0 e6 13. Ne5 Bc6 14. Nxe4 dxe4 15. c3 Bxe5 16. Bxe5 f6 17. Bf4 Rad8 18. Qc1 Nc7 19. c4 Ne8 20. Be3 Qc7 21. b4 a6 22. Bh6 Rf7 23. Be3 Qe7 24. Rd1 g5 25. Rd2 f5 26. d5 exd5 27. b5 f4 28. Bb6 Rc8 29. Bg4 Bd7 30. Bh5 Rf6 31. Bd4 Rxc4 32. Qb2 Rh6 33. Be2 Rc8 34. bxa6 bxa6 35. Qb7 Qd6 36. Rb6 Rc6 37. Rbb2 f3 38. Bf1 fxg2 39. Bxg2 Rc1+ 40. Bf1 Bc6 41. Qc8 g4 0-1

[Event "Natal zt 2.4"]
[Site "Natal"]
[Date "2022.10.03"]
[Round "1"]
[White "Mathias, Carlos Augusto De C"]
[Black "Ripa Carrasco, Dario"]
[Result "0-1"]
[ECO "B30"]
[WhiteElo "1490"]
[BlackElo "2076"]
[PlyCount "74"]
[EventDate "2022.10.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d3 c5 2. Nf3 Nc6 3. Nbd2 g6 4. e4 Bg7 5. c3 d5 6. Be2 dxe4 7. dxe4 Nf6 8. Qc2 0-0 9. h3 Nh5 10. Nf1 Qc7 11. g3 b6 12. Ng5 Nf6 13. g4 h6 14. Nf3 Bb7 15. Ng3 Nd7 16. Rg1 a5 17. a4 Ba6 18. Bxa6 Rxa6 19. Be3 c4 20. Rd1 Nde5 21. Nd2 Raa8 22. Kf1 Rab8 23. Qb1 Rfd8 24. f4 Nd3 25. e5 g5 26. Nh5 gxf4 27. Nxf4 Ncxe5 28. Nh5 Ng6 29. Nxg7 Kxg7 30. Nf3 Qc6 31. Rg3 e5 32. Qc2 Qe4 33. Qe2 Ndf4 34. Bxf4 Qxf4 35. Kg2 Rxd1 36. Qxd1 e4 37. Nd4 Nh4+ 0-1

[Event "Pan American-ch U1700"]
[Site "Timbo"]
[Date "2021.12.05"]
[Round "9"]
[White "Mathias, Carlos Augusto De C"]
[Black "Liebl, Livia"]
[Result "1-0"]
[ECO "A80"]
[WhiteElo "1461"]
[BlackElo "1530"]
[PlyCount "59"]
[EventDate "2021.12.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "CBM 205 Extra"]
[Source "ChessBase"]
[SourceDate "2022.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.01.31"]
[SourceQuality "1"]

1. d4 d5 2. Nc3 f5 3. Bf4 c6 4. e3 Nf6 5. Be2 e6 6. Bg5 Bd6 7. Bh5+ g6 8. Be2 0-0 9. h4 Qe8 10. Bxf6 Rxf6 11. Nf3 h6 12. Qd2 Kg7 13. h5 g5 14. Ne5 f4 15. exf4 Rxf4 16. g3 Rf8 17. Bd3 Bxe5 18. Bg6 Qe7 19. dxe5 Bd7 20. 0-0-0 Be8 21. f4 Bxg6 22. hxg6 Kxg6 23. Qd3+ Kg7 24. Rxh6 Rf5 25. Rdh1 Qc5 26. Rh7+ Kf8 27. Rh8+ Ke7 28. R1h7+ Rf7 29. Rxf7+ Kxf7 30. Qh7# 1-0

[Event "Pan American-ch U1700"]
[Site "Timbo"]
[Date "2021.12.04"]
[Round "8"]
[White "Da Cunha, Gastao"]
[Black "Mathias, Carlos Augusto De C"]
[Result "1-0"]
[ECO "C24"]
[WhiteElo "1564"]
[BlackElo "1461"]
[PlyCount "105"]
[EventDate "2021.12.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "CBM 205 Extra"]
[Source "ChessBase"]
[SourceDate "2022.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.01.31"]
[SourceQuality "1"]

1. e4 d6 2. Bc4 Nf6 3. d3 e5 4. Ne2 Be7 5. 0-0 Bg4 6. Nbc3 c6 7. f3 Be6 8. Bb3 Nbd7 9. Qe1 Nf8 10. f4 Bxb3 11. axb3 Ng4 12. Qg3 h5 13. f5 Bh4 14. Qf3 Qb6+ 15. Kh1 Nf2+ 16. Kg1 Ng4+ 17. Kh1 Nh7 18. Na4 Qd8 19. Ng1 b5 20. Nc3 Qb6 21. Nh3 Qd8 22. Nd1 Ng5 23. Nxg5 Bxg5 24. Nf2 Bxc1 25. Raxc1 Qh4 26. Qg3 Qxg3 27. hxg3 Nf6 28. Kg1 Kd7 29. Nh3 h4 30. gxh4 Rxh4 31. Kf2 Ng4+ 32. Ke2 f6 33. Rh1 Kc7 34. Ra1 Kb7 35. Nf2 Rah8 36. Rxh4 Rxh4 37. Rh1 Rxh1 38. Nxh1 Kb6 39. Ng3 a5 40. Nh5 Kc5 41. Nxg7 a4 42. bxa4 bxa4 43. Ne8 d5 44. Kf3 Nh6 45. Nxf6 d4 46. g4 Nf7 47. Nh7 Kd6 48. g5 Ke7 49. Kg4 Nh8 50. g6 c5 51. Kg5 Nf7+ 52. gxf7 Kxf7 53. Nf6 1-0

[Event "Pan American-ch U1700"]
[Site "Timbo"]
[Date "2021.12.04"]
[Round "7"]
[White "Mathias, Carlos Augusto De C"]
[Black "Sonnenhohl, Walter Evaldo Franc"]
[Result "1-0"]
[ECO "A44"]
[WhiteElo "1461"]
[BlackElo "1669"]
[PlyCount "71"]
[EventDate "2021.12.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "CBM 205 Extra"]
[Source "ChessBase"]
[SourceDate "2022.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.01.31"]
[SourceQuality "1"]

1. d4 c5 2. d5 d6 3. Nc3 a6 4. a4 e5 5. e4 f5 6. Nf3 Nf6 7. Bg5 Be7 8. Bxf6 Bxf6 9. Nd2 0-0 10. Nc4 b6 11. Bd3 f4 12. 0-0 Ra7 13. Be2 Raf7 14. a5 bxa5 15. Rxa5 g6 16. Qa1 Bh4 17. Bf3 Rg7 18. Na4 g5 19. Be2 g4 20. g3 f3 21. Bd3 Rg6 22. Nab6 Rh6 23. Nxc8 Qxc8 24. Ne3 Bd8 25. Ra4 Qd7 26. Rd1 Qg7 27. Nf5 Rxf5 28. exf5 Rh3 29. Qc1 Nd7 30. Bf1 Rh5 31. h3 gxh3 32. Qe3 h2+ 33. Kh1 e4 34. Raa1 Bg5 35. Qb3 Be7 36. Rxa6 1-0

[Event "Pan American-ch U1700"]
[Site "Timbo"]
[Date "2021.12.03"]
[Round "6"]
[White "Mathias, Carlos Augusto De C"]
[Black "Simas, Breno Matos"]
[Result "0-1"]
[ECO "B11"]
[WhiteElo "1461"]
[BlackElo "1689"]
[PlyCount "84"]
[EventDate "2021.12.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "CBM 205 Extra"]
[Source "ChessBase"]
[SourceDate "2022.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.01.31"]
[SourceQuality "1"]

1. e4 c6 2. d3 d5 3. Nd2 dxe4 4. Nxe4 Nd7 5. Bg5 Ngf6 6. Qe2 e6 7. Nf3 Be7 8. Bd2 0-0 9. h4 Qb6 10. Rb1 Nxe4 11. Qxe4 Nf6 12. Qe2 Bc5 13. c3 e5 14. Ng5 Bf5 15. Be3 Rad8 16. Bxc5 Qxc5 17. Ne4 Nxe4 18. dxe4 Be6 19. g4 Bxa2 20. Rc1 Bb3 21. Qf3 Rd6 22. h5 Rfd8 23. Be2 Rf6 24. Qg3 Rf4 25. Bf3 Rd3 26. Qh4 Rfxf3 27. h6 Qd6 28. Kf1 Qxh6 29. Qxh6 gxh6 30. Rxh6 Rh3 31. Rxh3 Rxh3 32. Kg2 Rd3 33. Ra1 a6 34. g5 Rd2 35. Ra5 Rxb2 36. Rxe5 Be6 37. Kg3 Rb5 38. Kf4 Rxe5 39. Kxe5 a5 40. Kd4 a4 41. c4 a3 42. Kc3 Bxc4 0-1

[Event "Pan American-ch U1700"]
[Site "Timbo"]
[Date "2021.12.03"]
[Round "5"]
[White "Nobre, Jailson Altair Barb"]
[Black "Mathias, Carlos Augusto De C"]
[Result "0-1"]
[ECO "A10"]
[WhiteElo "1616"]
[BlackElo "1461"]
[PlyCount "80"]
[EventDate "2021.12.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "CBM 205 Extra"]
[Source "ChessBase"]
[SourceDate "2022.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.01.31"]
[SourceQuality "1"]

1. Nf3 g6 2. c4 Bg7 3. g3 d6 4. Bg2 Nd7 5. Nc3 c6 6. b4 Ngf6 7. Bb2 0-0 8. d4 Nb6 9. c5 Nc4 10. Bc1 d5 11. 0-0 Bf5 12. Nd2 Nxd2 13. Bxd2 Re8 14. Qa4 e5 15. e3 exd4 16. exd4 a6 17. Rfe1 Qd7 18. Qb3 Ng4 19. Ne2 Re7 20. h3 Nf6 21. Kh2 Be4 22. a4 Rae8 23. Be3 Bxg2 24. Kxg2 Qf5 25. Nc3 h5 26. Rf1 Nh7 27. b5 Ng5 28. Bxg5 Qxg5 29. Rad1 h4 30. Rd3 hxg3 31. fxg3 Re3 32. Rf3 Rxf3 33. Rxf3 Bxd4 34. Rf4 Re3 35. Rg4 Qe5 36. bxa6 Re2+ 37. Kh1 Re1+ 38. Kh2 Qe3 39. Rxg6+ fxg6 40. h4 Qf2+ 0-1

[Event "Pan American-ch U1700"]
[Site "Timbo"]
[Date "2021.12.02"]
[Round "4"]
[White "Mathias, Carlos Augusto De C"]
[Black "De Abreu, Vinicius Lindoso"]
[Result "1-0"]
[ECO "D00"]
[WhiteElo "1461"]
[BlackElo "1581"]
[PlyCount "33"]
[EventDate "2021.12.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "CBM 205 Extra"]
[Source "ChessBase"]
[SourceDate "2022.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.01.31"]
[SourceQuality "1"]

1. d4 Nf6 2. Nc3 d5 3. Bf4 Bd7 4. e3 e6 5. a3 c5 6. Nf3 Nc6 7. Nb5 Rc8 8. Bd6 Ne7 9. Bc7 Qxc7 10. Nxc7+ Rxc7 11. Be2 Ng6 12. 0-0 cxd4 13. exd4 Bd6 14. Re1 0-0 15. Bd3 Rfc8 16. c3 Rd8 17. Ne5 1-0

[Event "Pan American-ch U1700"]
[Site "Timbo"]
[Date "2021.12.02"]
[Round "3"]
[White "Ramos, Rafael Cabreira"]
[Black "Mathias, Carlos Augusto De C"]
[Result "0-1"]
[ECO "C41"]
[WhiteElo "1748"]
[BlackElo "1461"]
[PlyCount "58"]
[EventDate "2021.12.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "CBM 205 Extra"]
[Source "ChessBase"]
[SourceDate "2022.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.01.31"]
[SourceQuality "1"]

1. e4 d6 2. Nf3 e5 3. d3 Be7 4. Be3 Nf6 5. Qd2 Nbd7 6. Be2 h6 7. Nc3 c6 8. 0-0 g5 9. Qd1 Nf8 10. Ne1 Ng6 11. Bh5 Nf4 12. Bxf4 gxf4 13. d4 Qc7 14. d5 Rg8 15. g3 Qb6 16. Kh1 Bh3 17. Ng2 Ng4 18. Qf3 Rg5 19. Bxg4 Bxg4 20. Qd3 f3 21. Ne3 Bh3 22. Rfd1 h5 23. Na4 Qc7 24. Nf5 Bg2+ 25. Kg1 Rg6 26. Nxe7 Kxe7 27. h4 Qd7 28. Qf1 Qh3 29. Qxg2 Qxg2# 0-1

[Event "Pan American-ch U1700"]
[Site "Timbo"]
[Date "2021.12.01"]
[Round "2"]
[White "Mathias, Carlos Augusto De C"]
[Black "Takano Ito, Raphael Kenzo"]
[Result "1-0"]
[ECO "D00"]
[WhiteElo "1461"]
[BlackElo "1099"]
[PlyCount "65"]
[EventDate "2021.12.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "CBM 205 Extra"]
[Source "ChessBase"]
[SourceDate "2022.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.01.31"]
[SourceQuality "1"]

1. d4 c6 2. Nc3 d5 3. Nf3 Nf6 4. e3 Bf5 5. b3 e6 6. a3 c5 7. Bb5+ Nc6 8. Ne5 Qc7 9. 0-0 a6 10. Bxc6+ bxc6 11. Bb2 Bd6 12. f4 0-0 13. Ne2 Be4 14. Ng3 Bg6 15. Rc1 Nd7 16. Qe2 f6 17. Nxg6 hxg6 18. Qg4 cxd4 19. Qxe6+ Kh8 20. Qh3+ Kg8 21. exd4 Bxf4 22. Rce1 Rae8 23. a4 Be3+ 24. Kh1 Bd2 25. Re6 Bf4 26. Rfe1 Qc8 27. Ba3 Rxe6 28. Qxe6+ Rf7 29. Qg4 g5 30. Nf5 Qa8 31. Ne7+ Kf8 32. Qxd7 Bd2 33. Ng6+ 1-0

[Event "Pan American-ch U1700"]
[Site "Timbo"]
[Date "2021.12.01"]
[Round "1"]
[White "Sampaio, Andre Luiz"]
[Black "Mathias, Carlos Augusto De C"]
[Result "1-0"]
[ECO "A46"]
[WhiteElo "1649"]
[BlackElo "1461"]
[PlyCount "104"]
[EventDate "2021.12.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "CBM 205 Extra"]
[Source "ChessBase"]
[SourceDate "2022.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.01.31"]
[SourceQuality "1"]

1. d4 d6 2. Nf3 Nd7 3. Bg5 Ngf6 4. Nbd2 c6 5. e3 Qc7 6. Bd3 e5 7. c3 Be7 8. Qc2 h6 9. Bh4 a5 10. Rd1 g5 11. Bg3 Nh5 12. dxe5 dxe5 13. Ne4 f5 14. Ned2 Nxg3 15. hxg3 e4 16. Nxe4 fxe4 17. Bxe4 Nf6 18. Bg6+ Kf8 19. Qb3 Bc5 20. Qc4 Qe7 21. Rd8+ Kg7 22. Rxh8 Kxh8 23. Nxg5 Kg7 24. Qf4 Bd6 25. Ne6+ Kxg6 26. Qxh6+ Kf7 27. Ng5+ Ke8 28. Qh8+ Kd7 29. Rh6 Qf8 30. Qxf8 Bxf8 31. Rxf6 Ke8 32. f4 Be7 33. Rg6 Bf5 34. Rg8+ Bf8 35. e4 Bd7 36. f5 Ke7 37. g4 Kf6 38. Nf3 Kf7 39. Rh8 Kg7 40. Rh5 Be7 41. g5 Kg8 42. g4 Re8 43. e5 Bd6 44. e6 Bxe6 45. fxe6 Rxe6+ 46. Kf2 Re4 47. Rh6 Bc5+ 48. Kg3 Re2 49. g6 Rxb2 50. Nh4 Be3 51. Rh7 Bg5 52. Rc7 Rxa2 1-0

[Event "Pernambuco-ch 2020"]
[Site "Recife"]
[Date "2021.08.21"]
[Round "3.18"]
[White "Da Silva, Luiz Filipy Soares"]
[Black "Mathias, Carlos Augusto De C"]
[Result "0-1"]
[ECO "C41"]
[BlackElo "1465"]
[PlyCount "48"]
[EventDate "2021.08.20"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 d6 2. Nf3 e5 3. Bc4 Be7 4. 0-0 h6 5. Nc3 c6 6. d4 Qc7 7. dxe5 dxe5 8. a3 Nd7 9. b4 g5 10. h3 Ngf6 11. Bxg5 hxg5 12. Nxg5 Rf8 13. Qf3 b5 14. Bb3 Nb6 15. Rad1 Nc4 16. Ne2 Rg8 17. Bxc4 bxc4 18. h4 Bg4 19. Qe3 Qb6 20. Qxb6 axb6 21. f3 Bd7 22. c3 b5 23. Ng3 Bd8 24. Rd6 Ke7 0-1

[Event "Pernambuco-ch 2020"]
[Site "Recife"]
[Date "2021.08.21"]
[Round "4.14"]
[White "Mathias, Carlos Augusto De C"]
[Black "De Oliveira, Helama Iury Gomes"]
[Result "0-1"]
[ECO "A46"]
[WhiteElo "1465"]
[PlyCount "32"]
[EventDate "2021.08.20"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. Nf3 Nf6 2. d4 e6 3. a3 b6 4. e3 Bb7 5. Nbd2 d6 6. Bb5+ Nbd7 7. 0-0 Be7 8. b3 a6 9. Bd3 0-0 10. Bb2 d5 11. Ne5 c5 12. Rc1 Rc8 13. f3 b5 14. Qe1 c4 15. bxc4 dxc4 16. Bxc4 bxc4 0-1

[Event "Pernambuco-ch 2020"]
[Site "Recife"]
[Date "2021.08.20"]
[Round "2.1"]
[White "Mathias, Carlos Augusto De C"]
[Black "Bouwman, Marcelo Wanderley"]
[Result "0-1"]
[ECO "A01"]
[WhiteElo "1465"]
[BlackElo "2179"]
[PlyCount "64"]
[EventDate "2021.08.20"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. b3 e5 2. Bb2 Nc6 3. e3 Nf6 4. Bb5 Bd6 5. Na3 a6 6. Bxc6 dxc6 7. Nc4 Qe7 8. Nxd6+ cxd6 9. d4 e4 10. Ba3 b5 11. c4 0-0 12. Ne2 Rd8 13. 0-0 h5 14. Qc2 h4 15. h3 g5 16. Rad1 g4 17. Nf4 Nh7 18. d5 c5 19. Bb2 Qg5 20. Kh2 Ra7 21. Rg1 f6 22. Qd2 Qf5 23. Qa5 Rf8 24. hxg4 Qxg4 25. cxb5 Rg7 26. b6 Ng5 27. Qa4 h3 28. g3 Nf3+ 29. Kh1 Nxg1 30. Rxg1 Qf3+ 31. Kh2 Qxf2+ 32. Kh1 h2 0-1

[Event "BRA-ch sf Reg2 86th"]
[Site "Recife"]
[Date "2019.12.20"]
[Round "3"]
[White "Caio, Francisco Ferreira"]
[Black "Mathias, Carlos Augusto De C"]
[Result "1-0"]
[ECO "A00"]
[WhiteElo "1608"]
[BlackElo "1477"]
[PlyCount "69"]
[EventDate "2019.12.19"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "CBM 194 Extra"]
[Source "ChessBase"]
[SourceDate "2020.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.03.31"]
[SourceQuality "1"]

1. b4 c6 2. Bb2 d5 3. g3 a5 4. bxa5 Qxa5 5. Bg2 Bf5 6. Nf3 Nd7 7. 0-0 Ngf6 8. Nh4 Be4 9. Bc3 Qc5 10. d4 Qc4 11. f3 Bg6 12. Nxg6 hxg6 13. Qd3 Nb6 14. Nd2 Qa4 15. Rfb1 Qa7 16. Bb4 Nbd7 17. e3 e6 18. Bxf8 Kxf8 19. Qb3 b6 20. c4 Qc7 21. f4 Ng4 22. h3 Nh6 23. Nf3 f6 24. cxd5 exd5 25. Nh4 Kf7 26. Qc2 f5 27. Bxd5+ Kf6 28. Qxc6+ Qxc6 29. Bxc6 Ra7 30. Bxd7 Rxd7 31. Rxb6+ Kf7 32. Nxg6 Re8 33. Ne5+ Rxe5 34. fxe5 Ng8 35. e6+ 1-0

[Event "BRA-ch sf Reg2 86th"]
[Site "Recife"]
[Date "2019.12.20"]
[Round "2"]
[White "Mathias, Carlos Augusto De C"]
[Black "Canonico, Rodrigo"]
[Result "0-1"]
[ECO "C28"]
[WhiteElo "1477"]
[BlackElo "1695"]
[PlyCount "56"]
[EventDate "2019.12.19"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "CBM 194 Extra"]
[Source "ChessBase"]
[SourceDate "2020.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.03.31"]
[SourceQuality "1"]

1. e4 e5 2. Nc3 Nc6 3. Bc4 Nf6 4. a3 Nxe4 5. Bxf7+ Kxf7 6. Nxe4 Be7 7. Nf3 d5 8. Ng3 e4 9. Ng1 Rf8 10. N1e2 Kg8 11. 0-0 Bc5 12. d3 exd3 13. Qxd3 Ne5 14. Qb3 Ng4 15. Nf4 Nxf2 16. Be3 Bxe3 17. Qxe3 Ng4 18. Qd4 c6 19. Ngh5 Rf7 20. Rae1 g6 21. Ng3 Bd7 22. h3 Nh6 23. Qd3 Qg5 24. Rf3 Rxf4 25. Qe3 Re8 26. Qd2 Rxe1+ 27. Kh2 Ng4+ 28. hxg4 Qh4# 0-1

[Event "BRA-ch sf Reg2 86th"]
[Site "Recife"]
[Date "2019.12.19"]
[Round "1"]
[White "Cilento, Lucas Geraldo"]
[Black "Mathias, Carlos Augusto De C"]
[Result "1-0"]
[ECO "B34"]
[WhiteElo "1963"]
[BlackElo "1477"]
[PlyCount "87"]
[EventDate "2019.12.19"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "CBM 194 Extra"]
[Source "ChessBase"]
[SourceDate "2020.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.03.31"]
[SourceQuality "1"]

1. e4 g6 2. d4 c5 3. Nf3 Bg7 4. Nc3 cxd4 5. Nxd4 a6 6. Be3 Nc6 7. Bc4 Nf6 8. Bb3 d6 9. Qd2 Nxd4 10. Bxd4 b5 11. f3 Be6 12. Nd5 0-0 13. Nxf6+ exf6 14. Bc3 Re8 15. 0-0-0 Bxb3 16. cxb3 Rc8 17. Kb1 Re6 18. Ba5 Qd7 19. Rc1 Ree8 20. Rxc8 Rxc8 21. Rc1 Rxc1+ 22. Kxc1 Bf8 23. Qd4 Qc6+ 24. Kb1 Kg7 25. Bc3 Be7 26. a3 Qc5 27. Kc2 Qxd4 28. Bxd4 g5 29. Kc3 Kg6 30. g4 h5 31. h3 hxg4 32. hxg4 Kg7 33. Kb4 Bd8 34. a4 bxa4 35. bxa4 Kf8 36. Kc4 Ke8 37. b4 Kd7 38. b5 axb5+ 39. Kxb5 Kc8 40. Kc6 d5 41. exd5 Ba5 42. d6 Bd8 43. d7+ Kb8 44. Bb6 1-0

[Event "Joao Pessoa de Assis Memorial 1st"]
[Site "Joao Pessoa"]
[Date "2019.11.17"]
[Round "5"]
[White "Mathias, Carlos Augusto De C"]
[Black "Palmeira, Alexandersson Barbo"]
[Result "1-0"]
[ECO "C44"]
[WhiteElo "1485"]
[PlyCount "75"]
[EventDate "2019.11.15"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 d6 3. Bc4 Nc6 4. d4 exd4 5. 0-0 Qf6 6. c3 Qg6 7. Re1 dxc3 8. Nxc3 Bh3 9. Bf1 0-0-0 10. Ng5 Bd7 11. b4 a6 12. Nf3 Bh3 13. b5 Ne5 14. Nxe5 dxe5 15. Qc2 Bb4 16. Re3 Be6 17. Rg3 Qf6 18. Be3 b6 19. Na4 g5 20. Bc1 Ne7 21. Bb2 Rd2 22. Qc1 Qxf2+ 23. Kh1 Rxb2 24. Qxb2 Qxb2 25. Nxb2 Rd8 26. Bc4 Bxc4 27. Nxc4 Rd4 28. Nxe5 Bc3 29. Rxc3 Rxe4 30. Nxf7 Re6 31. Rac1 Nd5 32. Rd3 Nf4 33. Rd8+ Kb7 34. Rd7 Ne2 35. Nd8+ Kc8 36. Nxe6 Kxd7 37. Rxc7+ Kd6 38. Rc6+ 1-0

[Event "Joao Pessoa de Assis Memorial 1st"]
[Site "Joao Pessoa"]
[Date "2019.11.16"]
[Round "4"]
[White "Araruna, Maria Luiza Ramalho"]
[Black "Mathias, Carlos Augusto De C"]
[Result "0-1"]
[ECO "C46"]
[BlackElo "1485"]
[PlyCount "101"]
[EventDate "2019.11.15"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[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. Nc3 Bc5 4. Qe2 Nh6 5. Na4 Nd4 6. Nxd4 Bxd4 7. c3 Bb6 8. g3 d6 9. Bg2 0-0 10. 0-0 Qf6 11. h3 a6 12. d3 Ba7 13. c4 b5 14. Nc3 c6 15. Kh2 Qe6 16. Bxh6 Qxh6 17. Rae1 b4 18. Nd1 Bd7 19. Bf3 Qxh3+ 20. Kg1 Qxg3+ 21. Kh1 f5 22. fxg3 Rf6 23. Qh2 Rh6 24. Qxh6 gxh6 25. Re2 Rf8 26. Rh2 fxe4 27. Rxh6 exf3 28. Rh5 Bg4 29. Rg5+ Kh8 30. Rxg4 Rf6 31. Re1 a5 32. Rh4 Rg6 33. Kh2 d5 34. Rxe5 f2 35. Nxf2 Bxf2 36. Re8+ Kg7 37. Re7+ Kf6 38. Re8 Bxg3+ 39. Kh3 Bxh4 40. Kxh4 Kf5 41. Rf8+ Ke5 42. Re8+ Kf4 43. Rf8+ Ke3 44. Rc8 Kf4 45. Rf8+ Ke5 46. b3 Rg2 47. Re8+ Kf4 48. Rf8+ Ke3 49. Re8+ Kxd3 50. Re1 Rxa2 51. c5 0-1

[Event "Joao Pessoa de Assis Memorial 1st"]
[Site "Joao Pessoa"]
[Date "2019.11.16"]
[Round "3"]
[White "Mathias, Carlos Augusto De C"]
[Black "De Melo, Gelucio"]
[Result "0-1"]
[ECO "B51"]
[WhiteElo "1485"]
[BlackElo "1649"]
[PlyCount "72"]
[EventDate "2019.11.15"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 193 Extra"]
[Source "ChessBase"]
[SourceDate "2020.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.01.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Nd7 4. 0-0 a6 5. Be2 Ngf6 6. d3 e6 7. Re1 Be7 8. Bf1 Qc7 9. a4 b6 10. h3 Bb7 11. Bf4 e5 12. Be3 0-0 13. Nc3 d5 14. exd5 Nxd5 15. Nxd5 Bxd5 16. Bd2 f5 17. Bc3 Bd6 18. Qe2 Rae8 19. Qd2 f4 20. Ng5 h6 21. Ne4 Nf6 22. Rad1 Bc6 23. b3 g5 24. Nxf6+ Rxf6 25. Bb2 Rg6 26. f3 Re7 27. Re2 h5 28. Rde1 g4 29. fxg4 hxg4 30. Kh2 f3 31. Re4 g3+ 32. Kh1 f2 33. R1e3 Bxe4 34. Rxe4 Rh7 35. Qe2 Qb7 36. Rg4 Rxh3# 0-1

[Event "Joao Pessoa de Assis Memorial 1st"]
[Site "Joao Pessoa"]
[Date "2019.11.15"]
[Round "2"]
[White "Barioni, Daniel Rossiter"]
[Black "Mathias, Carlos Augusto De C"]
[Result "1-0"]
[ECO "A41"]
[WhiteElo "1832"]
[BlackElo "1485"]
[PlyCount "127"]
[EventDate "2019.11.15"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. d4 d6 2. Bf4 g6 3. e4 c5 4. d5 Bg7 5. c3 a6 6. a4 Qa5 7. Nd2 Nd7 8. Ngf3 Ngf6 9. h3 0-0 10. Bd3 Qd8 11. 0-0 Nh5 12. Bh2 Nhf6 13. Qe2 Rb8 14. Rfd1 Re8 15. Ne1 b6 16. f4 Ra8 17. Ndf3 e6 18. dxe6 fxe6 19. e5 dxe5 20. Nxe5 Bb7 21. Nc4 Bc6 22. Bc2 b5 23. Ne5 Bd5 24. axb5 axb5 25. Rxa8 Qxa8 26. Qxb5 Rb8 27. Qa4 Qxa4 28. Bxa4 Nxe5 29. fxe5 Ne4 30. Nd3 Bh6 31. Bf4 Bf8 32. Bc1 g5 33. Bc2 c4 34. Nf2 Nxf2 35. Kxf2 Be7 36. Kg3 Rf8 37. Rd4 Bc5 38. Rg4 h6 39. Be4 Rf1 40. Bxd5 exd5 41. Bd2 Bf2+ 42. Kf3 Bc5+ 43. Ke2 Rb1 44. h4 Be7 45. hxg5 hxg5 46. Bxg5 Rxb2+ 47. Kf1 Bxg5 48. Rxg5+ Kf7 49. Kg1 Rc2 50. Rg3 Ke6 51. Re3 Rd2 52. g4 Rd3 53. Kf2 Rxe3 54. Kxe3 Kxe5 55. g5 Kf5 56. Kd4 Kxg5 57. Kxd5 Kf6 58. Kxc4 Ke6 59. Kc5 Kd7 60. Kb5 Kc7 61. Kc5 Kc8 62. Kc6 Kb8 63. c4 Kc8 64. c5 1-0

[Event "BRA-ch Amateur U1600"]
[Site "Sao Paulo"]
[Date "2019.06.23"]
[Round "7"]
[White "Nascimento, Gabriela Vitoria"]
[Black "Mathias, Carlos Augusto De C"]
[Result "1-0"]
[ECO "A48"]
[BlackElo "1482"]
[PlyCount "45"]
[EventDate "2019.06.20"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. h3 0-0 5. e3 d6 6. Be2 c5 7. c3 Be6 8. 0-0 Qb6 9. b3 Na6 10. Nbd2 Nd5 11. Bxa6 Nxc3 12. Qc2 Ne2+ 13. Bxe2 Rac8 14. Nc4 Qd8 15. Rad1 b5 16. Na3 cxd4 17. Qd2 dxe3 18. Bxe3 Bc3 19. Qd3 Bb2 20. Bc1 Bf5 21. Qxb5 Rc5 22. Qxc5 dxc5 23. Rxd8 1-0

[Event "BRA-ch Amateur U1600"]
[Site "Sao Paulo"]
[Date "2019.06.22"]
[Round "6"]
[White "Mathias, Carlos Augusto De C"]
[Black "Guedes, Lucas Caiche"]
[Result "1-0"]
[ECO "A17"]
[WhiteElo "1482"]
[BlackElo "1203"]
[PlyCount "63"]
[EventDate "2019.06.20"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. c4 e6 2. Nc3 Bb4 3. g3 Nf6 4. Bg2 Bxc3 5. bxc3 d5 6. Ba3 Nc6 7. cxd5 exd5 8. Qa4 Bd7 9. Qb3 Bc8 10. Nf3 Ne7 11. d3 0-0 12. c4 b6 13. 0-0 Re8 14. Bb2 Ng6 15. Rfe1 Bb7 16. Rad1 c5 17. cxd5 Bxd5 18. Qc3 Bxa2 19. Ng5 Rb8 20. d4 cxd4 21. Rxd4 Qc8 22. Qa3 Be6 23. Rc1 Qxc1+ 24. Bxc1 Rbc8 25. Nxe6 Rxe6 26. Bh3 Rxc1+ 27. Qxc1 Rxe2 28. Rd8+ Nf8 29. Qc8 Re1+ 30. Kg2 Ne8 31. Rxe8 Rxe8 32. Qxe8 1-0

[Event "BRA-ch Amateur U1600"]
[Site "Sao Paulo"]
[Date "2019.06.22"]
[Round "5.21"]
[White "Rodriguez, Rodrigo A"]
[Black "Mathias, Carlos Augusto De C"]
[Result "1/2-1/2"]
[ECO "A48"]
[BlackElo "1482"]
[PlyCount "28"]
[EventDate "2019.06.20"]
[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 Nf6 2. Bf4 g6 3. e3 Bg7 4. Be2 0-0 5. h3 d6 6. Nf3 c5 7. c3 Be6 8. Nbd2 Qb6 9. b3 Qa5 10. c4 Ne4 11. b4 Qxb4 12. Rb1 Qa5 13. Rb5 Qc3 14. Rb3 Qa5 1/2-1/2

[Event "BRA-ch Amateur U1600"]
[Site "Sao Paulo"]
[Date "2019.06.21"]
[Round "4"]
[White "Mathias, Carlos Augusto De C"]
[Black "Moterani, Vinicius Cesar"]
[Result "1-0"]
[ECO "A54"]
[WhiteElo "1482"]
[PlyCount "68"]
[EventDate "2019.06.20"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. d4 d6 5. d5 Ne7 6. Bg5 Ng6 7. Ne4 Be7 8. Nxf6+ Bxf6 9. Bxf6 Qxf6 10. e4 Bg4 11. Be2 a6 12. h3 Bxf3 13. Bxf3 b5 14. 0-0 0-0 15. g3 bxc4 16. Bg2 Rfb8 17. Qc2 Rb7 18. Rab1 Rb5 19. Qxc4 Qd8 20. b4 Rab8 21. a4 R5b6 22. a5 Rb5 23. Rb3 Nf8 24. h4 Nd7 25. Rfb1 R8b7 26. Bf1 Qb8 27. Qc6 Nc5 28. R3b2 Na4 29. Z0 Nxb2 30. Bxb5 Rxb5 31. Rxb2 h6 32. Qxa6 Rxb4 33. Rxb4 Qxb4 34. Qc8+ Kh7 1-0

[Event "BRA-ch Amateur U1600"]
[Site "Sao Paulo"]
[Date "2019.06.20"]
[Round "2"]
[White "Mathias, Carlos Augusto De C"]
[Black "Jefferson, Gary Michael"]
[Result "1-0"]
[ECO "B07"]
[WhiteElo "1482"]
[BlackElo "1055"]
[PlyCount "35"]
[EventDate "2019.06.20"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. c4 d6 2. Nc3 Nf6 3. e4 e5 4. Nge2 Bg4 5. f3 Be6 6. Rb1 Bxc4 7. Qa4+ Nc6 8. Qxc4 Nd4 9. Nxd4 exd4 10. Qxd4 c5 11. Qa4+ Qd7 12. Bb5 Qxb5 13. Qxb5+ Nd7 14. Qxb7 Rb8 15. Qc6 Be7 16. 0-0 Rd8 17. Nd5 Rc8 18. Qxc8+ 1-0

[Event "BRA-ch Amateur U1600"]
[Site "Sao Paulo"]
[Date "2019.06.20"]
[Round "1"]
[White "Roberto Gil, Renan"]
[Black "Mathias, Carlos Augusto De C"]
[Result "1-0"]
[ECO "D02"]
[BlackElo "1482"]
[PlyCount "77"]
[EventDate "2019.06.20"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. d4 Nf6 2. Bf4 e6 3. e3 c5 4. c3 Nc6 5. Nd2 d5 6. Ngf3 Qb6 7. Qb3 c4 8. Qxb6 axb6 9. a3 Na5 10. Be2 Be7 11. 0-0 Ne4 12. Nxe4 dxe4 13. Nd2 Nb3 14. Nxc4 Nxa1 15. Nxb6 Ra5 16. Rxa1 Bd7 17. a4 h5 18. b4 Rf5 19. h3 Rf6 20. a5 Rg6 21. a6 bxa6 22. Rxa6 Bd8 23. Nxd7 Kxd7 24. Ra7+ Kc6 25. b5+ Kb6 26. Ra6+ Kb7 27. c4 Bc7 28. Bxc7 Kxc7 29. Ra7+ Kb6 30. Rxf7 h4 31. c5+ Ka5 32. b6 Rb8 33. Ra7+ Kb4 34. c6 Rxb6 35. Rb7 Ka5 36. c7 Rc6 37. Rb5+ Ka4 38. Rc5 e5 39. Bb5+ 1-0

[Event "Recife Tavares Memorial 2nd"]
[Site "Recife"]
[Date "2019.05.11"]
[Round "4"]
[White "Mathias, Carlos Augusto De C"]
[Black "Frankental, David"]
[Result "0-1"]
[ECO "B23"]
[WhiteElo "1485"]
[BlackElo "1897"]
[PlyCount "76"]
[EventDate "2019.05.10"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 190 Extra"]
[Source "ChessBase"]
[SourceDate "2019.07.15"]
[SourceVersion "1"]
[SourceVersionDate "2019.07.15"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 g6 3. Bc4 Bg7 4. Nge2 Nc6 5. 0-0 e6 6. f4 Nge7 7. a3 d5 8. Bb5 0-0 9. Bxc6 Nxc6 10. Qe1 d4 11. Nd1 b6 12. d3 f5 13. Nf2 Bb7 14. Ng3 Re8 15. Nh3 e5 16. Qf2 exf4 17. Bxf4 fxe4 18. Nxe4 Rf8 19. Qg3 Ne7 20. Nd6 Nf5 21. Nxf5 Rxf5 22. Rae1 Qd5 23. Ng5 Raf8 24. Ne6 R8f6 25. Nc7 Qc6 26. Ne8 Rxf4 27. Nxf6+ Rxf6 28. Rxf6 Bxf6 29. h4 Bxh4 30. Qb8+ Kg7 31. Re4 Bg5 32. Qxa7 Be3+ 33. Kh1 Qd5 34. g3 Qh5+ 35. Kg2 Qe2+ 36. Kh3 Qf1+ 37. Kh4 Bg5+ 38. Kg4 Qf5# 0-1

[Event "Recife Tavares Memorial 2nd"]
[Site "Recife"]
[Date "2019.05.11"]
[Round "3"]
[White "Souza, Rafael Cabral de"]
[Black "Mathias, Carlos Augusto De C"]
[Result "1-0"]
[ECO "C10"]
[WhiteElo "2092"]
[BlackElo "1485"]
[PlyCount "35"]
[EventDate "2019.05.10"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 190 Extra"]
[Source "ChessBase"]
[SourceDate "2019.07.15"]
[SourceVersion "1"]
[SourceVersionDate "2019.07.15"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 c5 4. Nf3 Nc6 5. Bb5 a6 6. Bxc6+ bxc6 7. Ne5 cxd4 8. Nxc6 Qb6 9. Nxd4 Bc5 10. Na4 Qa5+ 11. c3 Bd6 12. exd5 Qxd5 13. 0-0 Bb7 14. f3 Qe5 15. g3 Qh5 16. Nxe6 Be5 17. Nb6 Nf6 18. Nxg7+ 1-0

[Event "Recife Rafael Cabral Cup 6th"]
[Site "Recife"]
[Date "2018.09.29"]
[Round "3"]
[White "Azevedo, Eduardo Jose E"]
[Black "Mathias, Carlos Augusto De C"]
[Result "1-0"]
[ECO "D01"]
[WhiteElo "1768"]
[BlackElo "1490"]
[PlyCount "39"]
[EventDate "2018.09.28"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. d4 d5 2. Nc3 Nf6 3. Bg5 Bf5 4. f3 e6 5. e4 dxe4 6. fxe4 Bg4 7. Bxf6 Qxf6 8. Qxg4 Qxd4 9. Nge2 Qe3 10. Qg3 Qb6 11. 0-0-0 Nc6 12. Na4 Qa5 13. Qb3 b5 14. Nac3 g6 15. Qxb5 Qb6 16. Qxb6 cxb6 17. Nd4 Ne5 18. Bb5+ Ke7 19. Nc6+ Kf6 20. Rhf1+ 1-0

[Event "Recife Rafael Cabral Cup 6th"]
[Site "Recife"]
[Date "2018.09.28"]
[Round "1"]
[White "Deus Filho, Joaquim"]
[Black "Mathias, Carlos Augusto De C"]
[Result "1-0"]
[ECO "B00"]
[WhiteElo "1908"]
[BlackElo "1490"]
[PlyCount "63"]
[EventDate "2018.09.28"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. f4 b6 2. e4 Bb7 3. Nc3 c5 4. Nf3 d6 5. Bc4 e6 6. d3 Be7 7. 0-0 Nf6 8. f5 d5 9. Bb5+ Nc6 10. fxe6 0-0 11. exf7+ Kh8 12. e5 Ng4 13. Bxc6 Bxc6 14. h3 d4 15. Ne4 Ne3 16. Bxe3 dxe3 17. Qe2 Rxf7 18. Qxe3 h6 19. e6 Rf5 20. Ng3 Rxf3 21. gxf3 Bg5 22. Qe2 Bf4 23. Qg2 Qd6 24. Nh5 Be5 25. Kh1 Bd4 26. c3 Be5 27. Rae1 Rf8 28. Re3 Rf5 29. Qg6 Rg5 30. Qf7 Bf6 31. Nxf6 gxf6 32. Qxf6+ 1-0

[Event "Recife Rafael Cabral Cup 6th"]
[Site "Recife"]
[Date "2018.09.28"]
[Round "2"]
[White "Mathias, Carlos Augusto De C"]
[Black "Magalhaes, Luis Carlos Cordeir"]
[Result "0-1"]
[ECO "B50"]
[WhiteElo "1490"]
[BlackElo "1384"]
[PlyCount "67"]
[EventDate "2018.09.28"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. Bc4 Nf6 4. Nc3 Nc6 5. h3 g6 6. 0-0 Bg7 7. a3 0-0 8. d3 a6 9. Be3 Bd7 10. Qd2 Qb6 11. Rab1 Nd4 12. Nh2 Rfe8 13. b4 Rab8 14. bxc5 Qxc5 15. Ne2 Nxe2+ 16. Qxe2 Qxa3 17. Nf3 Qa4 18. Ng5 e6 19. Nf3 d5 20. Bb3 Qc6 21. e5 Ne4 22. dxe4 dxe4 23. Nd4 Qc7 24. f4 exf3 25. Nxf3 Bc6 26. Bd4 Rbd8 27. c3 Rxd4 28. Nxd4 Bxe5 29. Nxc6 bxc6 30. Qf3 Re7 31. Kh1 c5 32. Bc4 a5 33. Rfd1 Kg7 34. Rb7 0-1

[Event "BRA-ch Amateur U1600"]
[Site "Sao Paulo"]
[Date "2018.05.31"]
[Round "1"]
[White "Mathias, Carlos Augusto De C"]
[Black "Albertini, Caetano"]
[Result "0-1"]
[ECO "B20"]
[WhiteElo "1523"]
[PlyCount "70"]
[EventDate "2018.05.31"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 g6 3. Bc4 Bg7 4. Nge2 e6 5. 0-0 Nc6 6. a3 Nge7 7. d3 0-0 8. Rb1 d5 9. exd5 exd5 10. Ba2 Bg4 11. h3 Bf5 12. Ng3 Be6 13. Nce2 Nf5 14. Nf4 Nxg3 15. Nxe6 fxe6 16. fxg3 Qd7 17. Qg4 Bd4+ 18. Be3 Rxf1+ 19. Rxf1 Bxe3+ 20. Kh2 Bd4 21. c3 Bg7 22. Qa4 Rf8 23. Re1 Qd6 24. Re3 Rf2 25. Qb3 b6 26. Qb5 h6 27. Kg1 Rf8 28. Qa4 e5 29. Re4 c4 30. dxc4 Qc5+ 31. Kh2 dxe4 32. Bb1 e3 33. Qd1 Rf2 34. Bxg6 e2 35. Qd7 e1Q 0-1

[Event "BRA-ch Amateur U1600"]
[Site "Sao Paulo"]
[Date "2018.05.31"]
[Round "2"]
[White "Oliveira, Olavo Tadeu Carvalh"]
[Black "Mathias, Carlos Augusto De C"]
[Result "1-0"]
[ECO "B01"]
[WhiteElo "1084"]
[BlackElo "1523"]
[PlyCount "83"]
[EventDate "2018.05.31"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Nf6 3. c4 e6 4. dxe6 Bxe6 5. Nc3 Nc6 6. Nf3 a6 7. d4 Bf5 8. a3 Be7 9. d5 Nb8 10. Be2 0-0 11. 0-0 Re8 12. Bf4 Bd6 13. Bg3 Bxg3 14. hxg3 h6 15. Bd3 Bxd3 16. Qxd3 Nbd7 17. Rfe1 Nc5 18. Qc2 b6 19. b4 Nb7 20. Ne4 Nxe4 21. Rxe4 Rxe4 22. Qxe4 Nd6 23. Qd3 Qd7 24. c5 Ne8 25. Ne5 Qe7 26. Re1 f6 27. Nf3 Qf7 28. cxb6 cxb6 29. d6 Qd7 30. Re7 Qb5 31. Qxb5 axb5 32. d7 Kf8 33. Re4 Nd6 34. Re6 Nc4 35. Rc6 Rd8 36. Rc8 Ke7 37. Nd4 Kxd7 38. Rxd8+ Kxd8 39. Nxb5 Nxa3 40. Nxa3 Kc7 41. Kf1 Kc6 42. Ke2 1-0

[Event "Recife Araujo Cup 5th"]
[Site "Recife"]
[Date "2018.05.05"]
[Round "4"]
[White "Da Silva, Alessandro Bezerra"]
[Black "Mathias, Carlos Augusto De C"]
[Result "1-0"]
[ECO "B22"]
[WhiteElo "1963"]
[BlackElo "1523"]
[PlyCount "133"]
[EventDate "2018.05.04"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 184 Extra"]
[Source "ChessBase"]
[SourceDate "2018.06.28"]
[SourceVersion "1"]
[SourceVersionDate "2018.06.28"]
[SourceQuality "1"]

1. e4 c5 2. d4 cxd4 3. c3 e6 4. cxd4 Bb4+ 5. Nc3 b6 6. a3 Be7 7. Nf3 Bb7 8. Bb5 a6 9. Bc4 b5 10. Ba2 Nf6 11. e5 Ne4 12. 0-0 0-0 13. Nxe4 Bxe4 14. d5 exd5 15. Bxd5 Bxd5 16. Qxd5 Nc6 17. Rd1 Ra7 18. Be3 Rb7 19. g3 Re8 20. e6 fxe6 21. Qh5 g6 22. Qg4 Bf6 23. Rac1 Ne5 24. Nxe5 Bxe5 25. Rc5 Qf6 26. Qe4 d5 27. Qc2 Rf7 28. b3 Ref8 29. Rc8 Kg7 30. Rxf8 Rxf8 31. f4 Bc3 32. Qf2 Qf5 33. Bd4+ Bxd4 34. Qxd4+ Qf6 35. Qa7+ Rf7 36. Qxa6 Qc3 37. Qxb5 Qe3+ 38. Kf1 Qf3+ 39. Ke1 Qe3+ 40. Qe2 Qxb3 41. Qe5+ Kf8 42. Ra1 Qb6 43. Kf1 Qb5+ 44. Kg2 Ke7 45. Kh3 Qc5 46. a4 Qa5 47. Re1 Rf6 48. Re4 Qc5 49. Rd4 Qd6 50. Qe1 Qc5 51. Rb4 h6 52. a5 d4 53. a6 Kd6 54. Qe5+ Qxe5 55. fxe5+ Kxe5 56. a7 Rf8 57. Rb8 Rxb8 58. axb8Q+ Ke4 59. Qf4+ Kd5 60. Kg2 e5 61. Qxh6 d3 62. Qxg6 e4 63. Kf2 Kd4 64. Qd6+ Kc3 65. Ke3 Kc2 66. Qc5+ Kd1 67. Qc3 1-0

[Event "Recife Araujo Cup 5th"]
[Site "Recife"]
[Date "2018.05.05"]
[Round "3"]
[White "Mathias, Carlos Augusto De C"]
[Black "Picasso Gallego, Nicolas"]
[Result "0-1"]
[ECO "B13"]
[WhiteElo "1523"]
[BlackElo "1812"]
[PlyCount "40"]
[EventDate "2018.05.04"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 184 Extra"]
[Source "ChessBase"]
[SourceDate "2018.06.28"]
[SourceVersion "1"]
[SourceVersionDate "2018.06.28"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. Bd3 Nc6 5. Ne2 Bg4 6. c3 e6 7. Qb3 Qc8 8. h3 Bxe2 9. Bxe2 Bd6 10. Bg5 h6 11. Bh4 Nge7 12. Nd2 Nf5 13. Nf3 0-0 14. g4 Nxh4 15. Nxh4 a6 16. Ng2 Qc7 17. Qc2 Nxd4 18. Qd3 Nxe2 19. Qxe2 Rac8 20. Qd2 Qc4 0-1

[Event "Joao Pessoa Fischer Memorial 9th"]
[Site "Joao Pessoa"]
[Date "2018.03.18"]
[Round "5"]
[White "Mathias, Carlos Augusto De C"]
[Black "Campos, Harley Ramos"]
[Result "0-1"]
[ECO "A00"]
[WhiteElo "1509"]
[PlyCount "54"]
[EventDate "2018.03.16"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 183 Extra"]
[Source "ChessBase"]
[SourceDate "2018.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2018.04.19"]
[SourceQuality "1"]

1. b4 e5 2. Bb2 Nc6 3. b5 Nd4 4. e3 Nf5 5. Bxe5 d6 6. Bb2 Nf6 7. Nf3 Be7 8. Nc3 0-0 9. d4 Re8 10. e4 Nh6 11. Bc1 Bg4 12. Bxh6 gxh6 13. Be2 Kh8 14. Qd3 Nh5 15. g3 Qd7 16. 0-0-0 c6 17. Ng1 Bxe2 18. Qxe2 Nf6 19. e5 Nd5 20. Nxd5 cxd5 21. f4 a6 22. a4 axb5 23. axb5 Ra5 24. Qh5 Kg7 25. Ne2 Qxb5 26. Rdf1 Qb4 27. e6 Ra1# 0-1

[Event "Joao Pessoa Fischer Memorial 9th"]
[Site "Joao Pessoa"]
[Date "2018.03.17"]
[Round "3"]
[White "Mathias, Carlos Augusto De C"]
[Black "Felix, Thiago Ribeiro"]
[Result "0-1"]
[ECO "D00"]
[WhiteElo "1509"]
[BlackElo "1935"]
[PlyCount "80"]
[EventDate "2018.03.16"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 183 Extra"]
[Source "ChessBase"]
[SourceDate "2018.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2018.04.19"]
[SourceQuality "1"]

1. d4 Nf6 2. Qd3 d5 3. Nc3 c6 4. Nf3 g6 5. Bg5 Qa5 6. Bxf6 exf6 7. e4 a6 8. Nd2 Be6 9. Nb3 Qd8 10. Be2 b5 11. exd5 cxd5 12. g4 Qd7 13. Bf3 b4 14. Ne2 Nc6 15. h3 a5 16. 0-0-0 Rc8 17. Kb1 a4 18. Nd2 Bd6 19. Rhe1 b3 20. c3 bxa2+ 21. Ka1 0-0 22. Rc1 Rb8 23. Kxa2 Qb7 24. Rb1 Na5 25. Qc2 Nb3 26. c4 Nxd2 27. Qxd2 Qb3+ 28. Ka1 Qxf3 29. c5 Bc7 30. Rf1 Rb3 31. Nc3 Ba5 32. Qc2 Bxc3 33. bxc3 Rfb8 34. Rxb3 axb3 35. Qd2 b2+ 36. Kb1 Qe4+ 37. Qc2 f5 38. Qxe4 dxe4 39. gxf5 Bxf5 40. d5 e3+ 0-1

[Event "Joao Pessoa Fischer Memorial 9th"]
[Site "Joao Pessoa"]
[Date "2018.03.17"]
[Round "4"]
[White "Soares, Max Jockesi Barbosa"]
[Black "Mathias, Carlos Augusto De C"]
[Result "1-0"]
[ECO "B01"]
[WhiteElo "1978"]
[BlackElo "1509"]
[PlyCount "78"]
[EventDate "2018.03.16"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 183 Extra"]
[Source "ChessBase"]
[SourceDate "2018.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2018.04.19"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qd6 4. Nf3 Bg4 5. h3 Bh5 6. Be2 Nf6 7. d4 Nc6 8. Be3 a6 9. Qd2 Bg6 10. 0-0-0 Ne4 11. Nxe4 Bxe4 12. Bf4 Qb4 13. Rhg1 Qxd2+ 14. Rxd2 e6 15. Ng5 Bg6 16. d5 exd5 17. Bf3 h6 18. Re1+ Ne7 19. Bxd5 c6 20. Bxf7+ Bxf7 21. Nxf7 Kxf7 22. Rd7 Kg6 23. Rxb7 Kf5 24. Bd2 Nd5 25. c4 Nf6 26. g4+ Kg6 27. Re6 Bc5 28. f4 Rhe8 29. f5+ Kh7 30. Rxf6 Be3 31. Bxe3 Rxe3 32. Rff7 Rae8 33. f6 Re1+ 34. Kc2 R1e2+ 35. Kc3 R2e3+ 36. Kd4 R3e4+ 37. Kc5 Re1 38. Rxg7+ Kh8 39. Rh7+ Kg8 1-0

[Event "Joao Pessoa Fischer Memorial 9th"]
[Site "Joao Pessoa"]
[Date "2018.03.16"]
[Round "2"]
[White "Alves Campelo, Danilo Cesar De"]
[Black "Mathias, Carlos Augusto De C"]
[Result "1-0"]
[ECO "B01"]
[WhiteElo "2061"]
[BlackElo "1509"]
[PlyCount "51"]
[EventDate "2018.03.16"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 183 Extra"]
[Source "ChessBase"]
[SourceDate "2018.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2018.04.19"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qd8 4. Bc4 Nf6 5. Nf3 Bg4 6. Bxf7+ Kxf7 7. Ne5+ Ke8 8. Nxg4 Nc6 9. d3 Qd7 10. Ne3 e6 11. 0-0 Bd6 12. Re1 a6 13. Ng4 Qf7 14. Ne4 Nxe4 15. Rxe4 h5 16. Ne3 Kd7 17. c3 Raf8 18. Qe2 g5 19. Nc4 Be7 20. Be3 Qg6 21. Bd4 Rh7 22. Re1 Qe8 23. Ne5+ Nxe5 24. Rxe5 b6 25. Rxe6 Rhf7 26. Bf6 1-0

[Event "Joao Pessoa Fischer Memorial 9th"]
[Site "Joao Pessoa"]
[Date "2018.03.16"]
[Round "1"]
[White "Mathias, Carlos Augusto De C"]
[Black "Baeta, Marcio Netto"]
[Result "1-0"]
[ECO "D00"]
[WhiteElo "1509"]
[BlackElo "2003"]
[PlyCount "83"]
[EventDate "2018.03.16"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 183 Extra"]
[Source "ChessBase"]
[SourceDate "2018.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2018.04.19"]
[SourceQuality "1"]

1. d4 Nf6 2. Qd3 d5 3. Nc3 Nc6 4. Nf3 g6 5. Bf4 Bf5 6. Qd2 Ne4 7. Nxe4 dxe4 8. d5 exf3 9. dxc6 Qxd2+ 10. Kxd2 0-0-0+ 11. Ke3 f6 12. cxb7+ Kb8 13. Kxf3 e5 14. e4 Be6 15. Be3 h5 16. g3 h4 17. Bd3 Be7 18. g4 Kxb7 19. h3 c5 20. b3 Rdf8 21. Ke2 Kc6 22. a4 f5 23. f3 fxg4 24. fxg4 a5 25. Rhf1 Rh7 26. Rxf8 Bxf8 27. Rf1 Be7 28. Kd2 Rf7 29. Rxf7 Bxf7 30. Kc3 Be6 31. Bb5+ Kd6 32. Be8 Bxg4 33. hxg4 Bg5 34. Kd3 h3 35. Bg1 Bf4 36. Bxg6 Ke6 37. Bf5+ Kf7 38. g5 h2 39. Bxh2 Bxh2 40. Kc4 Bg1 41. Kb5 Be3 42. g6+ 1-0

[Event "Natal Regiion-ch sf"]
[Site "Natal"]
[Date "2017.11.04"]
[Round "6"]
[White "Mathias, Carlos Augusto De C"]
[Black "Macedo, Alexandre Soares"]
[Result "0-1"]
[ECO "B12"]
[WhiteElo "1510"]
[BlackElo "1874"]
[PlyCount "107"]
[EventDate "2017.11.02"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "CBM 181 Extra"]
[Source "ChessBase"]
[SourceDate "2017.12.12"]
[SourceVersion "1"]
[SourceVersionDate "2017.12.12"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. g4 Bg6 5. Nd2 e6 6. Nb3 Be7 7. Nf3 Nd7 8. Bd2 a6 9. Bd3 Bxd3 10. cxd3 Qc7 11. Qc2 f6 12. Bc3 Nh6 13. Rg1 Nf7 14. Qe2 0-0-0 15. 0-0-0 Rhe8 16. Kb1 Bf8 17. Rge1 Kb8 18. Rc1 Rc8 19. Nfd2 Qd8 20. f4 g6 21. f5 exf5 22. gxf5 gxf5 23. e6 Nb6 24. Qh5 Ng5 25. h4 Nxe6 26. Qxf5 Ng7 27. Qxh7 Qd6 28. Rxe8 Rxe8 29. Nc5 Qg3 30. Ndb3 Qg4 31. Na5 Bxc5 32. dxc5 Nd7 33. Nb3 Nh5 34. Re1 Rxe1+ 35. Bxe1 Qd1+ 36. Nc1 Nxc5 37. Bf2 b6 38. Bxc5 bxc5 39. Qg8+ Kc7 40. Qf7+ Kd6 41. Qf8+ Ke5 42. Qxc5 Kf4 43. Qc3 Kf5 44. Qxc6 Qh1 45. Qxa6 Ng3 46. Qc8+ Kf4 47. a4 Qe1 48. Qc7+ Kg4 49. a5 Ne2 50. Qc2 Nxc1 51. Qxc1 Qxa5 52. Qc3 Qxc3 53. bxc3 f5 54. Kc2 0-1

[Event "Natal Regiion-ch sf"]
[Site "Natal"]
[Date "2017.11.04"]
[Round "5"]
[White "Oliveira, Antonio Pereira"]
[Black "Mathias, Carlos Augusto De C"]
[Result "0-1"]
[ECO "A00"]
[WhiteElo "1618"]
[BlackElo "1510"]
[PlyCount "80"]
[EventDate "2017.11.02"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "CBM 181 Extra"]
[Source "ChessBase"]
[SourceDate "2017.12.12"]
[SourceVersion "1"]
[SourceVersionDate "2017.12.12"]
[SourceQuality "1"]

1. b4 e5 2. Bb2 Qe7 3. a3 Nf6 4. e3 d6 5. Be2 g6 6. Nf3 Bg7 7. 0-0 0-0 8. d3 Na6 9. Nbd2 Re8 10. c4 b6 11. Ng5 Bb7 12. Bf3 Bxf3 13. Ngxf3 Nb8 14. Re1 Nbd7 15. Qc2 Nh5 16. Ne4 c6 17. d4 d5 18. cxd5 cxd5 19. Nc3 Rac8 20. Qb3 e4 21. Nd2 Nhf6 22. Nxd5 Nxd5 23. Qxd5 Rc2 24. Bc1 Nf6 25. Qg5 Qc7 26. Rb1 Rc8 27. h3 Qb7 28. Qh4 R8c7 29. f3 Qc8 30. Nxe4 Nxe4 31. Qxe4 Rxc1 32. Kh2 Rxe1 33. Rxe1 Rc2 34. Qe7 Qc3 35. Qe8+ Bf8 36. Qa4 Qxe1 37. Qxc2 Qxe3 38. Qb2 Bg7 39. Qc2 Bxd4 40. Qe4 Qxe4 0-1

[Event "Natal Regiion-ch sf"]
[Site "Natal"]
[Date "2017.11.03"]
[Round "4"]
[White "Mathias, Carlos Augusto De C"]
[Black "De Araujo, Antonio Jose"]
[Result "0-1"]
[ECO "A01"]
[WhiteElo "1510"]
[BlackElo "1557"]
[PlyCount "96"]
[EventDate "2017.11.02"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "CBM 181 Extra"]
[Source "ChessBase"]
[SourceDate "2017.12.12"]
[SourceVersion "1"]
[SourceVersionDate "2017.12.12"]
[SourceQuality "1"]

1. b3 Nf6 2. Bb2 d6 3. d4 b6 4. Nf3 Bb7 5. e3 g6 6. Nbd2 Bg7 7. Bc4 e6 8. Bd3 Nbd7 9. Qe2 0-0 10. Nf1 Rc8 11. Ng3 c5 12. h4 h5 13. Rg1 cxd4 14. exd4 Nd5 15. Qd2 Re8 16. Ne4 N7f6 17. Nxf6+ Qxf6 18. 0-0-0 Qf4 19. Ng5 Qxd2+ 20. Kxd2 Bh6 21. Ke2 Bxg5 22. hxg5 Nf4+ 23. Kd2 Nxg2 24. Ba3 Red8 25. c4 Nh4 26. Kc3 a5 27. Kb2 Bf3 28. Rc1 Bg4 29. Be4 Bf3 30. Bd3 Bb7 31. Be2 Ba6 32. Rh1 Nf5 33. Rhd1 d5 34. Bf1 dxc4 35. bxc4 Rxd4 36. Rxd4 Nxd4 37. Be7 Nf5 38. Bf6 Nd6 39. Kb3 Ne4 40. Bg2 Nxf2 41. Bd4 Nd3 42. Rc2 Nc5+ 43. Kc3 Nd7 44. Be3 b5 45. c5 b4+ 46. Kd4 Bb7 47. Kd3 Bxg2 48. Rxg2 Nxc5+ 0-1

[Event "Natal Regiion-ch sf"]
[Site "Natal"]
[Date "2017.11.03"]
[Round "3"]
[White "Mathias, Carlos Augusto De C"]
[Black "Guara Neto, Argemiro Braga"]
[Result "0-1"]
[ECO "B34"]
[WhiteElo "1510"]
[BlackElo "2056"]
[PlyCount "64"]
[EventDate "2017.11.02"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "CBM 181 Extra"]
[Source "ChessBase"]
[SourceDate "2017.12.12"]
[SourceVersion "1"]
[SourceVersionDate "2017.12.12"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. f3 0-0 8. Qd2 d5 9. Be2 dxe4 10. Nxc6 bxc6 11. fxe4 Qa5 12. Bh6 Bxh6 13. Qxh6 Nxe4 14. Qe3 Nxc3 15. bxc3 Bf5 16. 0-0 Qb6 17. Qxb6 axb6 18. Bd3 Bxd3 19. cxd3 Ra3 20. Rfc1 Rd8 21. d4 c5 22. dxc5 bxc5 23. Rc2 c4 24. Re1 e6 25. Re4 Ra4 26. Kf2 Rd6 27. Rd4 Rxd4 28. cxd4 Ra3 29. Rd2 Kg7 30. Ke2 Kf6 31. Kd1 Kf5 32. Kc2 Rxa2+ 0-1

[Event "Natal Regiion-ch sf"]
[Site "Natal"]
[Date "2017.11.02"]
[Round "2"]
[White "Moraes, Nelson da Silva"]
[Black "Mathias, Carlos Augusto De C"]
[Result "1-0"]
[ECO "C47"]
[WhiteElo "2207"]
[BlackElo "1510"]
[PlyCount "87"]
[EventDate "2017.11.02"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "CBM 181 Extra"]
[Source "ChessBase"]
[SourceDate "2017.12.12"]
[SourceVersion "1"]
[SourceVersionDate "2017.12.12"]
[SourceQuality "1"]

1. e4 Nc6 2. Nc3 e5 3. Nf3 Nf6 4. d4 Bb4 5. d5 Ne7 6. Qd3 Bxc3+ 7. bxc3 d6 8. Be2 0-0 9. 0-0 Ng6 10. g3 h6 11. Ne1 Ne8 12. Bh5 Nf6 13. Bf3 Bh3 14. Ng2 Bg4 15. Bxg4 Nxg4 16. f3 Nf6 17. Ne3 Ne7 18. c4 Qc8 19. Kg2 Kh7 20. Bb2 Nh5 21. Nf5 Ng6 22. Bc1 Nf6 23. Be3 Qd8 24. Rab1 b6 25. Qd2 Ng8 26. Kh1 N6e7 27. f4 Nxf5 28. exf5 f6 29. Qd3 Re8 30. fxe5 fxe5 31. Rbe1 Nf6 32. Bc1 Qc8 33. h3 Qa6 34. a3 Qb7 35. Rd1 Re7 36. g4 Rae8 37. g5 hxg5 38. Bxg5 Rf7 39. Rg1 Rh8 40. Bxf6 Rxf6 41. Rg6 Rxg6 42. fxg6+ Kg8 43. Qf5 c6 44. Qe6+ 1-0

[Event "BRA-ch Amateur U1600"]
[Site "Sao Paulo"]
[Date "2017.10.12"]
[Round "1"]
[White "Barbosa, Kassio Rodrigo"]
[Black "Mathias, Carlos Augusto De C"]
[Result "1-0"]
[ECO "B00"]
[BlackElo "1535"]
[PlyCount "121"]
[EventDate "2017.10.12"]
[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 Nc6 2. Nf3 f5 3. Nc3 fxe4 4. Nxe4 d5 5. Nc3 e5 6. d4 Bg4 7. Be2 Bxf3 8. Bxf3 e4 9. Be2 Nf6 10. Bf4 Bb4 11. 0-0 0-0 12. Nb5 Ba5 13. c3 a6 14. Na3 Ne7 15. Bg5 Ng6 16. Nc2 c6 17. f3 Qd6 18. Bxf6 Rxf6 19. fxe4 dxe4 20. Ne3 Bc7 21. g3 b5 22. Rxf6 Qxf6 23. Qb3+ Kh8 24. Rf1 Qg5 25. Ng2 h5 26. Qf7 Bd6 27. Rf5 Qc1+ 28. Bf1 Qh6 29. Be2 Rf8 30. Qxf8+ Nxf8 31. Rxh5 Kh7 32. Nh4 g6 33. Rxh6+ Kxh6 34. Kf2 Ne6 35. Ke3 Ng5 36. a3 Kg7 37. Ng2 Kf6 38. Bg4 Ke7 39. Nf4 Kf6 40. h4 Nf7 41. Kxe4 Nd8 42. Nd3 Bxg3 43. h5 gxh5 44. Bxh5 a5 45. Nc5 Kg5 46. Be8 Bf4 47. Bd7 Bc1 48. Nd3 Bd2 49. Be8 Kf6 50. Ne5 Bc1 51. Bxc6 Nxc6 52. Nxc6 a4 53. Na7 Ke6 54. Nxb5 Bxb2 55. d5+ Ke7 56. Kd4 Bc1 57. c4 Kd8 58. c5 Bg5 59. Kc4 Bd2 60. c6 Ba5 61. d6 1-0

[Event "BRA-ch Amateur U1600"]
[Site "Sao Paulo"]
[Date "2017.10.12"]
[Round "2"]
[White "Mathias, Carlos Augusto De C"]
[Black "Da Cunha, Gabriela Goes"]
[Result "0-1"]
[ECO "B12"]
[WhiteElo "1535"]
[BlackElo "1264"]
[PlyCount "42"]
[EventDate "2017.10.12"]
[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 c6 2. d4 d5 3. e5 Bf5 4. Nc3 e6 5. g4 Bg6 6. Nge2 Nd7 7. h4 h6 8. f4 Ne7 9. Ng3 Qc7 10. Bd3 Bxd3 11. Qxd3 0-0-0 12. Be3 g6 13. Rf1 f5 14. exf6 Nxf6 15. Qe2 Bg7 16. 0-0-0 h5 17. gxh5 gxh5 18. Rf3 Nf5 19. Nxf5 exf5 20. Rg1 Ng4 21. Na4 Rde8 0-1

[Event "Recife Arraes Memorial 10th"]
[Site "Recife"]
[Date "2017.10.08"]
[Round "5"]
[White "Da Silva, Anderson Vieira"]
[Black "Mathias, Carlos Augusto De C"]
[Result "1-0"]
[ECO "B00"]
[WhiteElo "1812"]
[BlackElo "1535"]
[PlyCount "103"]
[EventDate "2017.10.06"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 181 Extra"]
[Source "ChessBase"]
[SourceDate "2017.12.12"]
[SourceVersion "1"]
[SourceVersionDate "2017.12.12"]
[SourceQuality "1"]

1. e4 Nc6 2. d4 e5 3. d5 Nce7 4. Bg5 h6 5. Bh4 g5 6. Bg3 Ng6 7. Nf3 d6 8. Nbd2 Bg7 9. Be2 a6 10. Nc4 Nf6 11. Qd3 Nh5 12. Ne3 Bd7 13. 0-0-0 Nhf4 14. Qd2 Nxe2+ 15. Qxe2 b5 16. h4 g4 17. Nd2 h5 18. Nf5 Bxf5 19. exf5 Ne7 20. Qd3 Qc8 21. Ne4 f6 22. Bxe5 Bh6+ 23. Kb1 fxe5 24. f6 Nf5 25. Ng5 Bxg5 26. hxg5 Kf7 27. f4 exf4 28. Qe4 Qd7 29. Qxf4 Rae8 30. Rd3 Re5 31. Qd2 Kg6 32. Ra3 Ra8 33. g3 Qf7 34. Rd3 Rae8 35. Rd1 Ne3 36. Rh1 Nxd5 37. Qh2 Re1+ 38. Rd1 Rxd1+ 39. Rxd1 Qe6 40. Qh1 c6 41. a3 Qe4 42. Qh4 Qf5 43. f7 Qxf7 44. Qh1 Qf5 45. Rf1 Qe4 46. Qg1 Kxg5 47. Qa7 Qg6 48. Qd7 Re2 49. Qxc6 Rd2 50. Qc8 Nf6 51. Qc3 Rd5 52. Qe3# 1-0

[Event "Recife Arraes Memorial 10th"]
[Site "Recife"]
[Date "2017.10.08"]
[Round "6"]
[White "Mathias, Carlos Augusto De C"]
[Black "Melo, Fernando Antonio Al"]
[Result "0-1"]
[ECO "B08"]
[WhiteElo "1535"]
[BlackElo "1804"]
[PlyCount "78"]
[EventDate "2017.10.06"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 181 Extra"]
[Source "ChessBase"]
[SourceDate "2017.12.12"]
[SourceVersion "1"]
[SourceVersionDate "2017.12.12"]
[SourceQuality "1"]

1. e4 d6 2. Nf3 Nf6 3. Nc3 g6 4. d4 Bg7 5. h3 0-0 6. Be3 Nc6 7. Qd2 e5 8. d5 Ne7 9. Be2 Bd7 10. Nh2 a6 11. Bh6 b5 12. Bxg7 Kxg7 13. b4 a5 14. Rb1 axb4 15. Rxb4 c5 16. dxc6 Bxc6 17. Bxb5 Rb8 18. a4 Qa5 19. Rc4 Bxb5 20. axb5 Qa1+ 21. Qd1 Qxd1+ 22. Kxd1 Rfd8 23. Nf3 d5 24. exd5 Nexd5 25. Ke2 Nxc3+ 26. Rxc3 Rxb5 27. Rd1 Rxd1 28. Kxd1 Ne4 29. Re3 f5 30. Ke2 Rc5 31. c4 Kf6 32. Nd2 Nxd2 33. Kxd2 Rxc4 34. Rd3 Ke6 35. Re3 Re4 36. Rxe4 fxe4 37. Ke3 Kd5 38. g4 h5 39. gxh5 gxh5 0-1

[Event "Recife Arraes Memorial 10th"]
[Site "Recife"]
[Date "2017.10.07"]
[Round "4"]
[White "Mathias, Carlos Augusto De C"]
[Black "De Lima, Maysa Queiroz Alves"]
[Result "1-0"]
[ECO "C41"]
[WhiteElo "1535"]
[PlyCount "149"]
[EventDate "2017.10.06"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 181 Extra"]
[Source "ChessBase"]
[SourceDate "2017.12.12"]
[SourceVersion "1"]
[SourceVersionDate "2017.12.12"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 d6 3. d4 exd4 4. Qxd4 Nc6 5. Qd1 Bg4 6. Bc4 Nf6 7. Nc3 a6 8. 0-0 b5 9. Bb3 Be7 10. Re1 0-0 11. Nd5 Re8 12. Nxf6+ Bxf6 13. Qd5 Qd7 14. c3 Bxf3 15. gxf3 Ne5 16. Qd1 Qh3 17. Kh1 Nxf3 18. Bf4 Be5 19. Qd5 Rf8 20. Qxe5 dxe5 21. Bg3 Rad8 22. Re3 Nd2 23. Bxe5 Qg4 24. Rg1 Qxg1+ 25. Kxg1 Nxb3 26. axb3 Rd2 27. Rg3 g6 28. h4 h5 29. Bxc7 Rxb2 30. b4 Rc8 31. Be5 Ra2 32. f4 Kh7 33. f5 Rc4 34. fxg6+ fxg6 35. Bd4 a5 36. bxa5 Rxa5 37. Rf3 Ra6 38. Rf7+ Kg8 39. Rg7+ Kf8 40. Rd7 Ke8 41. Rb7 b4 42. Rb8+ Kf7 43. Rb7+ Ke8 44. Rxb4 Rxb4 45. cxb4 Ra4 46. Bc5 Kd7 47. e5 Ke6 48. Bd6 Kf5 49. Kg2 Ra3 50. Kh2 Rb3 51. Kg2 Re3 52. Bc7 Kg4 53. b5 Re2+ 54. Kg1 Rb2 55. b6 Kxh4 56. e6 Re2 57. b7 Rxe6 58. b8Q Re1+ 59. Kf2 Re4 60. Bg3+ Kg5 61. Kf3 Rg4 62. Qe5+ Kh6 63. Bf4+ Rxf4+ 64. Qxf4+ Kh7 65. Kg3 Kg7 66. Kh4 Kh7 67. Kg5 Kg7 68. Qf6+ Kh7 69. Qf7+ Kh8 70. Qf8+ Kh7 71. Qh6+ Kg8 72. Qxg6+ Kh8 73. Qxh5+ Kg8 74. Kf6 Kf8 75. Qf7# 1-0

[Event "Recife Arraes Memorial 10th"]
[Site "Recife"]
[Date "2017.10.06"]
[Round "2"]
[White "Assuncao, Jose Ribamar da Cos"]
[Black "Mathias, Carlos Augusto De C"]
[Result "1-0"]
[ECO "B00"]
[WhiteElo "1680"]
[BlackElo "1535"]
[PlyCount "93"]
[EventDate "2017.10.06"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 181 Extra"]
[Source "ChessBase"]
[SourceDate "2017.12.12"]
[SourceVersion "1"]
[SourceVersionDate "2017.12.12"]
[SourceQuality "1"]

1. e4 Nc6 2. d4 e5 3. d5 Nce7 4. Nf3 Ng6 5. a3 Nf6 6. Nc3 Bc5 7. h3 a6 8. Bc4 b5 9. Bb3 d6 10. Qe2 h6 11. g3 0-0 12. Be3 Bxe3 13. Qxe3 Rb8 14. 0-0-0 Bd7 15. g4 Nh7 16. Ne2 a5 17. Nd2 a4 18. Ba2 Qc8 19. f4 exf4 20. Nxf4 Ne5 21. Qg3 Qb7 22. Qc3 Rfc8 23. Nd3 Nxd3+ 24. Qxd3 b4 25. axb4 Qxb4 26. Qa3 Qb7 27. Rhf1 Nf8 28. Rf2 Ng6 29. Nf3 Qb6 30. Rdf1 Bb5 31. c4 Be8 32. Rc2 Qa6 33. Nd4 Ne5 34. Nf5 Ng6 35. h4 Kf8 36. g5 hxg5 37. hxg5 Rb7 38. Qh3 Bd7 39. Qh7 Bxf5 40. exf5 Ne7 41. f6 gxf6 42. gxf6 Ng6 43. Qg7+ Ke8 44. Re1+ Ne5 45. Rxe5+ dxe5 46. Qg8+ Kd7 47. Qxf7+ 1-0

[Event "Recife Arraes Memorial 10th"]
[Site "Recife"]
[Date "2017.10.06"]
[Round "1"]
[White "Mathias, Carlos Augusto De C"]
[Black "Gomes de Moura, Pedro Vinicius"]
[Result "0-1"]
[ECO "A36"]
[WhiteElo "1535"]
[BlackElo "2098"]
[PlyCount "74"]
[EventDate "2017.10.06"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 181 Extra"]
[Source "ChessBase"]
[SourceDate "2017.12.12"]
[SourceVersion "1"]
[SourceVersionDate "2017.12.12"]
[SourceQuality "1"]

1. c4 c5 2. Nc3 Nc6 3. g3 Nf6 4. Bg2 e6 5. e4 d6 6. Nge2 Be7 7. d4 a6 8. 0-0 Rb8 9. h3 Qc7 10. Be3 b5 11. cxb5 axb5 12. dxc5 dxc5 13. Bf4 e5 14. Be3 Nd4 15. Rc1 0-0 16. f4 Rd8 17. Nd5 Nxd5 18. exd5 Nxe2+ 19. Qxe2 c4 20. Be4 f5 21. Bg2 e4 22. g4 Rxd5 23. Rfd1 Qd8 24. Rxd5 Qxd5 25. Rd1 Qe6 26. g5 b4 27. Bf1 Ba6 28. b3 Rc8 29. bxc4 Bxc4 30. Qh5 Bxa2 31. Rc1 Rxc1 32. Bxc1 Bc5+ 33. Kh1 e3 34. Be2 Bd5+ 35. Kh2 Qe4 36. Bf3 Qxf3 37. Qe8+ Bf8 0-1

[Event "Recife op 4th"]
[Site "Recife"]
[Date "2017.04.23"]
[Round "6"]
[White "Mathias, Carlos Augusto De C"]
[Black "Fernandes, Pedro Guilherme Mun"]
[Result "1-0"]
[ECO "A20"]
[WhiteElo "1485"]
[BlackElo "1668"]
[PlyCount "37"]
[EventDate "2017.04.20"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. c4 Nf6 2. g3 e5 3. Bg2 Bc5 4. e3 d5 5. cxd5 Nxd5 6. Ne2 Nc6 7. 0-0 0-0 8. Nbc3 Nde7 9. a3 a5 10. f4 Rb8 11. fxe5 Be6 12. Kh1 Bb6 13. d4 Nd5 14. Ne4 Nxe5 15. dxe5 Bxe3 16. Nf4 Bxc1 17. Qxc1 Qe7 18. Nxe6 Qxe6 19. Qg5 1-0

[Event "Recife op 4th"]
[Site "Recife"]
[Date "2017.04.22"]
[Round "5"]
[White "Leite, Henrique Bezerra"]
[Black "Mathias, Carlos Augusto De C"]
[Result "1-0"]
[ECO "A49"]
[WhiteElo "1957"]
[BlackElo "1485"]
[PlyCount "64"]
[EventDate "2017.04.20"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 0-0 5. 0-0 c6 6. c3 d6 7. Na3 Nbd7 8. Re1 c5 9. e4 e5 10. dxc5 dxc5 11. Nc4 Ne8 12. Bg5 f6 13. Qd5+ Kh8 14. Nfxe5 Qe7 15. Nxd7 Qxd7 16. Qxd7 Bxd7 17. Be3 Rc8 18. Red1 Bg4 19. f3 Be6 20. Nd6 Nxd6 21. Rxd6 Rfe8 22. Bf1 Bf8 23. Rd2 a6 24. c4 f5 25. e5 Be7 26. f4 Kg7 27. Rad1 h6 28. b3 Rh8 29. Bg2 b5 30. Bb7 Rcd8 31. Bxa6 b4 32. Rxd8 Bxd8 1-0

[Event "Recife op 4th"]
[Site "Recife"]
[Date "2017.04.22"]
[Round "4"]
[White "Mathias, Carlos Augusto De C"]
[Black "Da Silva, Anderson Vieira"]
[Result "1-0"]
[ECO "A20"]
[WhiteElo "1485"]
[BlackElo "1822"]
[PlyCount "83"]
[EventDate "2017.04.20"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. c4 e5 2. g3 f5 3. d3 Nf6 4. Bg2 c6 5. Nc3 Bc5 6. e3 0-0 7. Nge2 d6 8. 0-0 Nbd7 9. Na4 Bb6 10. b3 Ng4 11. h3 Ngf6 12. Kh2 Bc7 13. f4 Qe8 14. Nac3 Bb6 15. e4 Ng4+ 16. hxg4 fxg4 17. d4 Qh5+ 18. Kg1 exd4 19. Nxd4 Nc5 20. Nce2 Ne6 21. Be3 Rf6 22. Kf2 Nxf4 23. gxf4 Bd7 24. Ng3 Qe5 25. Ke2 Qa5 26. Qd2 Qa6 27. Kf2 Raf8 28. f5 g6 29. Bh6 R8f7 30. Bg5 Re6 31. Ke3 d5 32. fxe6 Rxf1 33. Rxf1 Bxe6 34. Qf2 Qa3 35. Bh6 Bf5 36. exf5 Qc5 37. Nge2 dxc4 38. f6 Kf7 39. Qf4 c3 40. Qxg4 Qe5+ 41. Be4 Qc7 42. Qe6# 1-0

[Event "Recife op 4th"]
[Site "Recife"]
[Date "2017.04.20"]
[Round "1"]
[White "De Souza Neto, Hilton Vilarim"]
[Black "Mathias, Carlos Augusto De C"]
[Result "1-0"]
[ECO "E61"]
[WhiteElo "1877"]
[BlackElo "1485"]
[PlyCount "67"]
[EventDate "2017.04.20"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 d6 4. Nc3 g6 5. Nf3 Bg7 6. Bg5 0-0 7. h3 Qa5 8. Qd2 Bf5 9. g4 Bd7 10. Bg2 Qd8 11. 0-0 Na6 12. Rad1 Nc7 13. Rfe1 b5 14. e4 bxc4 15. e5 Nfe8 16. exd6 Nxd6 17. Bxe7 Qc8 18. Bxd6 Rd8 19. Be7 Re8 20. Bxc5 Rb8 21. Bxa7 Rb4 22. Bc5 Rb8 23. Bd4 f6 24. Rxe8+ Nxe8 25. Re1 Nd6 26. Qf4 Nf7 27. Bxf6 Bh6 28. g5 Bf8 29. Ne4 Rb4 30. Bc3 Rb6 31. Ne5 Nxe5 32. Qxe5 Bxh3 33. Qh8+ Kf7 34. Qxh7+ 1-0

