[Event "Caxambu op"]
[Site "Caxambu"]
[Date "2023.07.23"]
[Round "6"]
[White "Silva, Roberto Antonio"]
[Black "Metidieri, Diogenes Galavotti"]
[Result "1-0"]
[ECO "A48"]
[WhiteElo "1800"]
[BlackElo "1136"]
[PlyCount "105"]
[EventDate "2023.07.20"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. e3 d6 4. Be2 Bg7 5. 0-0 0-0 6. b3 Re8 7. Bb2 Nc6 8. Nbd2 b6 9. c4 Rb8 10. a3 e6 11. Qc2 Bb7 12. Rac1 Qd7 13. Rfe1 Ne7 14. h3 Rec8 15. e4 Nh5 16. e5 Bxf3 17. Nxf3 d5 18. c5 Qc6 19. b4 b5 20. Qd2 Nf5 21. g4 Bh6 22. Qc2 Bxc1 23. Rxc1 Nf4 24. gxf5 Nxe2+ 25. Qxe2 exf5 26. Re1 Re8 27. Bc1 Re6 28. Ng5 Re7 29. e6 fxe6 30. Qe5 Rf8 31. Nxe6 Rff7 32. Bg5 Rxe6 33. Qxe6 Qxe6 34. Rxe6 Kg7 35. Ra6 h6 36. Be3 f4 37. Bd2 c6 38. Kf1 g5 39. Rxc6 Rf6 40. Rxf6 Kxf6 41. f3 Ke6 42. Kf2 a6 43. Kg2 Kd7 44. h4 Ke6 45. hxg5 hxg5 46. Kh3 Kf5 47. c6 g4+ 48. fxg4+ Ke4 49. Bxf4 Kxd4 50. c7 Ke4 51. Bc1 d4 52. c8Q d3 53. Bd2 1-0

[Event "Caxambu op"]
[Site "Caxambu"]
[Date "2023.07.23"]
[Round "7"]
[White "Silva, Roberto Antonio"]
[Black "Salotti, Thiago Maida"]
[Result "0-1"]
[ECO "A46"]
[WhiteElo "1800"]
[BlackElo "1418"]
[PlyCount "78"]
[EventDate "2023.07.20"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. d4 d6 2. Nf3 Nf6 3. e3 g6 4. Be2 Bg7 5. Nbd2 0-0 6. b3 Nc6 7. Bb2 Bf5 8. a3 Re8 9. c4 e5 10. dxe5 dxe5 11. 0-0 Ng4 12. e4 Be6 13. Qc2 Nd4 14. Nxd4 exd4 15. h3 Ne5 16. Bd3 c5 17. Nf3 Nxf3+ 18. gxf3 Bxh3 19. f4 Qh4 20. Qe2 Bxf1 21. Rxf1 Qxf4 22. Bc1 Qd6 23. f4 f5 24. e5 Qd8 25. Qf3 Qh4 26. Qd5+ Kh8 27. Rf2 Qg3+ 28. Qg2 Qxd3 29. Qxb7 Rab8 30. Qc6 Qxb3 31. Qxc5 Qd1+ 32. Rf1 Qg4+ 33. Kf2 Rb3 34. Qc6 Qh4+ 35. Ke2 d3+ 36. Kd2 Qh2+ 37. Ke3 Qe2+ 38. Kd4 Rd8+ 39. Kc5 Bf8+ 0-1

[Event "Caxambu op"]
[Site "Caxambu"]
[Date "2023.07.22"]
[Round "5"]
[White "Gomes, Marco Tulio Caldeir"]
[Black "Silva, Roberto Antonio"]
[Result "1-0"]
[ECO "B76"]
[WhiteElo "1649"]
[BlackElo "1800"]
[PlyCount "125"]
[EventDate "2023.07.20"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 d6 5. Nc3 Nf6 6. f3 g6 7. Be3 Bg7 8. Qd2 0-0 9. 0-0-0 a6 10. g4 Ne5 11. h4 h5 12. gxh5 Nxh5 13. Rg1 Bd7 14. Be2 Rc8 15. Bh6 Nc4 16. Bxc4 Rxc4 17. Bxg7 Kxg7 18. f4 Qc7 19. f5 Rc8 20. fxg6 Rxc3 21. Qxc3 Qxc3 22. bxc3 fxg6 23. Kb2 b5 24. Rdf1 e6 25. Rf3 Rf8 26. Rxf8 Kxf8 27. Rxg6 Kf7 28. Rg1 e5 29. Nf3 Bc6 30. Ng5+ Ke7 31. Kb3 Nf4 32. Rd1 Be8 33. a3 Bh5 34. Rd2 Kd7 35. c4 bxc4+ 36. Kxc4 Kc6 37. c3 Be2+ 38. Kb3 Kc5 39. Rxe2 Nxe2 40. h5 Nf4 41. h6 Ng6 42. Nf7 a5 43. h7 d5 44. Nxe5 Nh8 45. exd5 Kxd5 46. Nc4 a4+ 47. Kb4 Ke6 48. Kxa4 Kf7 49. Kb5 Kg7 50. a4 Nf7 51. a5 Nd8 52. a6 Ne6 53. Kb6 Kxh7 54. a7 Kg6 55. a8Q Kf5 56. Qd5+ Kf6 57. Nd6 Ke7 58. c4 Nf4 59. Qe5+ Ne6 60. c5 Kd7 61. Qh5 Ke7 62. Qf7+ Kd8 63. Qe8# 1-0

[Event "Caxambu op"]
[Site "Caxambu"]
[Date "2023.07.22"]
[Round "4"]
[White "Silva, Roberto Antonio"]
[Black "Olivo, Anibal Ribeiro"]
[Result "0-1"]
[ECO "E92"]
[WhiteElo "1800"]
[BlackElo "1508"]
[PlyCount "84"]
[EventDate "2023.07.20"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 0-0 6. Be2 e5 7. d5 a5 8. Be3 Ng4 9. Bd2 f5 10. h3 Nf6 11. Bg5 h6 12. Bxf6 Rxf6 13. Qc2 Na6 14. a3 Bd7 15. Rb1 a4 16. Nxa4 Bxa4 17. Qxa4 Nc5 18. Qc2 Nxe4 19. Nd2 Nc5 20. b4 Nd7 21. Ra1 b6 22. Nb3 e4 23. 0-0 Rf7 24. Ra2 Qf6 25. c5 Re7 26. cxb6 Nxb6 27. Qc6 Qe5 28. Rd1 e3 29. f3 Qg3 30. Rf1 Be5 31. f4 Bxf4 32. Rxf4 Qxf4 33. Bf3 Qc4 34. Qxc4 Nxc4 35. Nd4 Rxa3 36. Rxa3 Nxa3 37. Nc6 Re8 38. Be2 Nb1 39. Nd4 Nc3 40. Kf1 Kh7 41. Bb5 Re4 42. Ne2 Nxb5 0-1

[Event "Caxambu op"]
[Site "Caxambu"]
[Date "2023.07.21"]
[Round "3"]
[White "Oliveira, Francisco Evandro S"]
[Black "Silva, Roberto Antonio"]
[Result "0-1"]
[ECO "A16"]
[WhiteElo "1359"]
[BlackElo "1800"]
[PlyCount "112"]
[EventDate "2023.07.20"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. c4 Nf6 2. g3 g6 3. Bg2 Bg7 4. e3 0-0 5. Ne2 c6 6. Nbc3 d5 7. b3 Bd7 8. 0-0 Qc8 9. Qc2 Bh3 10. Re1 Bxg2 11. Kxg2 Nbd7 12. a3 e5 13. d3 e4 14. Rd1 Nc5 15. d4 Ncd7 16. Rb1 Re8 17. Qa2 Nf8 18. b4 Qg4 19. Nf4 Qf3+ 20. Kg1 Ne6 21. cxd5 Nxf4 22. exf4 Ng4 23. Rf1 Qxc3 24. Be3 Nxe3 25. fxe3 Qxe3+ 26. Rf2 Qxd4 27. Kg2 e3 28. Re2 Qxd5+ 29. Qxd5 cxd5 30. Rd1 d4 31. Rd3 Rac8 32. Kf3 Rc3 33. Rd1 Rxa3 34. Rb1 d3 35. Rxe3 Rxe3+ 36. Kxe3 Bc3 37. Kxd3 Bf6+ 38. Kc4 Rc3+ 39. Kb5 b6 40. Re1 Kg7 41. Re8 Rc2 42. h3 h5 43. g4 hxg4 44. hxg4 g5 45. f5 Rg2 46. Re4 Rd2 47. Ka6 Rd7 48. Re8 Rd8 49. Rxd8 Bxd8 50. Kxa7 Kf6 51. Kb7 Ke5 52. Kc6 Kf4 53. Kd7 Bf6 54. Kc6 Kxg4 55. Kxb6 Kxf5 56. Kc6 Bd4 0-1

[Event "Caxambu op"]
[Site "Caxambu"]
[Date "2023.07.21"]
[Round "2"]
[White "Silva, Roberto Antonio"]
[Black "Brito, Nicolas Neres"]
[Result "0-1"]
[ECO "D94"]
[WhiteElo "1800"]
[BlackElo "1525"]
[PlyCount "64"]
[EventDate "2023.07.20"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. e3 Bg7 5. Nf3 0-0 6. cxd5 Nxd5 7. Be2 c5 8. Nxd5 Qxd5 9. 0-0 Nc6 10. dxc5 Qxc5 11. Rb1 Bf5 12. Ra1 Rfd8 13. Qb3 Bc2 14. Qb5 Qxb5 15. Bxb5 a6 16. Be2 Nb4 17. a3 Nd3 18. Nd4 Bxd4 19. exd4 Rxd4 20. Be3 Rd7 21. Bf3 Ne5 22. Be2 Bd3 23. Rfe1 Bxe2 24. Rxe2 Rad8 25. h3 Nc4 26. b3 Nxe3 27. Rxe3 e6 28. Ree1 Rd2 29. Rac1 Rb2 30. b4 Rdd2 31. Rf1 Ra2 32. a4 Rdb2 0-1

[Event "Caxambu op"]
[Site "Caxambu"]
[Date "2023.07.20"]
[Round "1"]
[White "Chaves, Joara"]
[Black "Silva, Roberto Antonio"]
[Result "1-0"]
[ECO "B23"]
[WhiteElo "1890"]
[BlackElo "1800"]
[PlyCount "45"]
[EventDate "2023.07.20"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. f4 d6 4. Bb5 Bd7 5. Nf3 Nf6 6. 0-0 Qc7 7. d3 g6 8. Kh1 Bg7 9. Bxc6 bxc6 10. Qe1 0-0 11. Qh4 e6 12. f5 exf5 13. Bh6 fxe4 14. Ng5 Qd8 15. Bxg7 Kxg7 16. Rxf6 h6 17. Ngxe4 d5 18. Raf1 dxe4 19. Nxe4 Bf5 20. R1xf5 gxf5 21. Qxh6+ Kg8 22. Qg5+ Kh7 23. Rh6# 1-0

