[Event "BRA-ch U26"]
[Site "Matinhos"]
[Date "1992.08.??"]
[Round "5"]
[White "Martelo, Miguel Angelo Ditz"]
[Black "Gralha, Marcelo Ferreira"]
[Result "0-1"]
[ECO "B22"]
[PlyCount "78"]
[EventDate "1992.08.27"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c5 2. c3 Qa5 3. Nf3 Nc6 4. Na3 e6 5. Nc4 Qc7 6. d4 cxd4 7. cxd4 d5 8. exd5 Bb4+ 9. Bd2 Bxd2+ 10. Qxd2 exd5 11. Ne3 Nf6 12. Bb5 0-0 13. 0-0 a6 14. Ba4 Qd6 15. Rac1 Ne4 16. Qd3 Ne7 17. Bb3 Nf6 18. Ne5 Bd7 19. a4 Rac8 20. Bc2 g6 21. g4 Rc7 22. g5 Nh5 23. N3g4 Bxg4 24. Nxg4 Qf4 25. Nh6+ Kg7 26. Qe3 Rfc8 27. Rfe1 Rxc2 28. Rxc2 Rxc2 29. h4 Qxe3 30. Rxe3 Nf5 31. Nxf5+ gxf5 32. Re5 Rxb2 33. Rxd5 b5 34. Rd6 Rb1+ 35. Kh2 bxa4 36. Rxa6 Rb4 37. Rh6 Rxd4 38. Rxh5 a3 39. Rh6 Ra4 0-1

[Event "BRA-ch U26"]
[Site "Matinhos"]
[Date "1992.08.??"]
[Round "1"]
[White "Martelo, Miguel Angelo Ditz"]
[Black "Hille, Waltercler"]
[Result "0-1"]
[ECO "B22"]
[PlyCount "98"]
[EventDate "1992.08.27"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c5 2. c3 e6 3. d4 d5 4. exd5 Qxd5 5. Nf3 Nc6 6. Be2 Nf6 7. 0-0 cxd4 8. cxd4 Be7 9. Nc3 Qd8 10. Bf4 0-0 11. Qd2 b6 12. Rfd1 Bb7 13. Rac1 Rc8 14. Qe1 Nb4 15. Ne5 Nbd5 16. Bd2 Ne8 17. Bg4 Nd6 18. Nxf7 Nxf7 19. Bxe6 Nxc3 20. Bxc8 Nxd1 21. Bxb7 Nxb2 22. Qe3 b5 23. Qb3 Nc4 24. Bc3 Qd7 25. Bf3 Bg5 26. Rb1 Bd2 27. Ba1 Nfd6 28. d5 Qf5 29. Bd4 g5 30. Bxa7 g4 31. Be2 Be3 32. Bxe3 Nxe3 33. fxe3 Qf2+ 34. Kh1 Qxe2 35. Qd1 Rf2 36. Qg1 Qxa2 37. Ra1 Qe2 38. Re1 Qb2 39. e4 Re2 40. Rb1 Qc2 41. Ra1 Qxe4 42. Qf1 Nf5 43. Ra8+ Kf7 44. Ra7+ Kg6 45. Ra1 g3 46. h3 Kh5 47. Rd1 Rf2 48. Qg1 Ne3 49. d6 Rxg2 0-1

[Event "BRA-ch U26"]
[Site "Matinhos"]
[Date "1992.08.??"]
[Round "2"]
[White "Martelo, Miguel Angelo Ditz"]
[Black "Mello, Priscila"]
[Result "1-0"]
[ECO "B09"]
[PlyCount "69"]
[EventDate "1992.08.27"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. f4 Bg7 5. Nf3 0-0 6. Bd3 Nbd7 7. 0-0 c6 8. e5 Ne8 9. Qe1 b5 10. Ng5 Nb6 11. Nce4 f5 12. exf6 Nxf6 13. Qh4 h6 14. Nf3 Nbd5 15. Nxf6+ Rxf6 16. Qg3 Kh7 17. Nh4 Qe8 18. Bd2 Qf7 19. Rae1 Bd7 20. b3 Rf8 21. c4 Nxf4 22. Bxf4 bxc4 23. bxc4 Bf5 24. Nxf5 gxf5 25. Qe3 e5 26. dxe5 Re8 27. Bg3 Qh5 28. Qf3 Qxf3 29. Rxf3 Kg8 30. Bxf5 Rff8 31. exd6 Rxe1+ 32. Bxe1 Bd4+ 33. Bf2 Bxf2+ 34. Kxf2 Rd8 35. d7 1-0

[Event "BRA-ch U26"]
[Site "Matinhos"]
[Date "1992.08.??"]
[Round "7"]
[White "Martelo, Miguel Angelo Ditz"]
[Black "Miyasato, Julio"]
[Result "1-0"]
[ECO "C33"]
[PlyCount "77"]
[EventDate "1992.08.27"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e5 2. f4 exf4 3. Bc4 c6 4. Nf3 d5 5. exd5 cxd5 6. Bb3 Nf6 7. 0-0 Be7 8. d4 0-0 9. Bxf4 h6 10. c3 Bd6 11. Ne5 Nc6 12. Nd2 Nxe5 13. dxe5 Bc5+ 14. Kh1 Bg4 15. Nf3 Ne4 16. h3 Be6 17. Qe2 g5 18. Bh2 Qb6 19. Bc2 Qxb2 20. Rab1 Qxc3 21. Rb3 Qc4 22. Bd3 Qa4 23. h4 g4 24. Nd2 Qxa2 25. Nxe4 Qxb3 26. Nf6+ Kg7 27. Nh5+ Kg8 28. Qd2 f5 29. Qxh6 Kf7 30. Qf6+ Ke8 31. Ng7+ Kd7 32. Qxe6+ Kc7 33. Bxf5 Rac8 34. Qd7+ Kb8 35. e6+ g3 36. e7 Rxf5 37. Qxc8+ Kxc8 38. e8Q+ Kc7 39. Nxf5 1-0

[Event "BRA-ch U26"]
[Site "Matinhos"]
[Date "1992.08.??"]
[Round "3"]
[White "Moreira, Cleber Naief"]
[Black "Martelo, Miguel Angelo Ditz"]
[Result "1/2-1/2"]
[ECO "B03"]
[PlyCount "53"]
[EventDate "1992.08.27"]
[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 Nf6 2. e5 Nd5 3. c4 Nb6 4. d4 d6 5. f4 dxe5 6. fxe5 Nc6 7. Be3 Bf5 8. Nc3 e6 9. Be2 Nb4 10. Rc1 c5 11. Nf3 cxd4 12. Nxd4 Nc6 13. Nxc6 Qxd1+ 14. Rxd1 bxc6 15. 0-0 Bb4 16. Bf3 Rc8 17. Bxb6 axb6 18. Ne4 Bxe4 19. Bxe4 Ke7 20. Rf3 b5 21. Rb3 Bc5+ 22. Kf1 b4 23. a3 Rhd8 24. Rxd8 Kxd8 25. axb4 Ba7 26. b5 cxb5 27. cxb5 1/2-1/2

[Event "BRA-ch U26"]
[Site "Matinhos"]
[Date "1992.08.??"]
[Round "6"]
[White "Pock, Mario"]
[Black "Martelo, Miguel Angelo Ditz"]
[Result "0-1"]
[ECO "D01"]
[PlyCount "80"]
[EventDate "1992.08.27"]
[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 d5 2. Nf3 Nf6 3. Nc3 Bf5 4. Bg5 e6 5. e3 Be7 6. Be2 Nbd7 7. 0-0 0-0 8. Nh4 Bg6 9. Bd3 c5 10. Bxg6 fxg6 11. b3 Qe8 12. Nf3 h6 13. Bxf6 Bxf6 14. Qd3 a6 15. Na4 b5 16. c4 bxa4 17. bxa4 cxd4 18. exd4 dxc4 19. Qxc4 Nb6 20. Qb3 Nd5 21. a5 Qb5 22. Qxb5 axb5 23. Rfe1 Kf7 24. Ne5+ Bxe5 25. dxe5 Rxa5 26. g3 Rfa8 27. Re2 Nc3 28. Rc2 Rxa2 29. Raxa2 Nxa2 30. Rc7+ Kg8 31. h4 b4 32. Rd7 b3 33. Rd1 Rc8 34. Rb1 Rc1+ 35. Rxc1 Nxc1 36. Kg2 b2 37. f4 b1Q 38. Kf3 Qd3+ 39. Kg4 h5+ 40. Kh3 Ne2 0-1

[Event "BRA-ch U26"]
[Site "Matinhos"]
[Date "1992.08.??"]
[Round "4"]
[White "Rocha, Rogerio"]
[Black "Martelo, Miguel Angelo Ditz"]
[Result "1-0"]
[ECO "B02"]
[PlyCount "74"]
[EventDate "1992.08.27"]
[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 Nf6 2. Nc3 d5 3. exd5 Nxd5 4. Bc4 Nb6 5. Bb3 Nc6 6. Nf3 Bf5 7. d4 e6 8. 0-0 Be7 9. d5 exd5 10. Nxd5 Nxd5 11. Bxd5 Nb4 12. Bb3 Qxd1 13. Rxd1 Bxc2 14. Bxc2 Nxc2 15. Rb1 Nb4 16. a3 Nc6 17. Bf4 Bd8 18. Re1+ Ne7 19. Rbc1 c6 20. Bd6 Kd7 21. Ne5+ Kxd6 22. Nxf7+ Kd7 23. Nxh8 Ke8 24. Rc4 Kf8 25. Rf4+ Kg8 26. Nf7 g5 27. Nxg5 Nd5 28. Re8+ Kg7 29. Rf7+ Kh6 30. Rg8 Bxg5 31. Rxa8 Bc1 32. Rxb7 Nf4 33. Raxa7 Nd3 34. Rxh7+ Kg6 35. Rhc7 c5 36. b4 cxb4 37. Ra5 b3 1-0

[Event "URS-PGR rapid"]
[Site "Ponta Grossa"]
[Date "1991.07.??"]
[Round "7"]
[White "Alexandrov, Alexei"]
[Black "Martelo, Miguel Angelo Ditz"]
[Result "1-0"]
[ECO "D41"]
[PlyCount "67"]
[EventDate "1991.07.??"]
[EventType "schev (rapid)"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 c5 7. Nf3 cxd4 8. cxd4 Bb4+ 9. Bd2 Qa5 10. Rb1 Bxd2+ 11. Qxd2 Qxd2+ 12. Kxd2 Ke7 13. Bb5 Rd8 14. Rhc1 a6 15. Bd3 Nc6 16. Ke3 Ra7 17. Rb6 Bd7 18. Rc5 Kd6 19. Nd2 Rc8 20. Nc4+ Ke7 21. d5 exd5 22. exd5 Nd8 23. d6+ Ke8 24. Rc7 Ne6 25. Rcxb7 Rxb7 26. Rxb7 Nc5 27. Ra7 Rc6 28. Ke2 Ne6 29. Ra8+ Nd8 30. Ne5 Rxd6 31. Rxd8+ Kxd8 32. Nxf7+ Kc7 33. Nxd6 Kxd6 34. Bxa6 1-0

[Event "URS-PGR rapid"]
[Site "Ponta Grossa"]
[Date "1991.07.??"]
[Round "2"]
[White "Bykhovsky, Avigdor"]
[Black "Martelo, Miguel Angelo Ditz"]
[Result "1-0"]
[ECO "B04"]
[WhiteElo "2500"]
[PlyCount "83"]
[EventDate "1991.07.??"]
[EventType "schev (rapid)"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 g6 5. Be2 Bg7 6. 0-0 0-0 7. c4 Nb6 8. exd6 cxd6 9. h3 Nc6 10. Nc3 Bf5 11. Bg5 h6 12. Be3 d5 13. g4 Be6 14. c5 Nd7 15. Qd2 Kh7 16. Rad1 Rh8 17. Nh4 Nf6 18. f4 Bc8 19. Bd3 Bxg4 20. hxg4 Nxg4 21. Nf3 e6 22. Kg2 Qf6 23. Kg3 h5 24. Ne5 Nh6 25. Qh2 Nf5+ 26. Bxf5 Qxf5 27. Qh3 Qf6 28. Qh4 Qf5 29. Nxc6 bxc6 30. Qg5 Bf6 31. Qxf5 gxf5 32. Rh1 Rag8+ 33. Kf3 Kh6 34. Rh3 Rg4 35. Bf2 Kg6 36. Rdh1 h4 37. Ne2 Kg7 38. Ke3 Kf8 39. Ng1 Bxd4+ 40. Kxd4 Rxf4+ 41. Ke3 e5 42. Rxh4 1-0

[Event "URS-PGR rapid"]
[Site "Ponta Grossa"]
[Date "1991.07.??"]
[Round "6"]
[White "Lubinka, Inna"]
[Black "Martelo, Miguel Angelo Ditz"]
[Result "1-0"]
[ECO "D37"]
[PlyCount "63"]
[EventDate "1991.07.??"]
[EventType "schev (rapid)"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. Nc3 Be7 5. Bf4 0-0 6. e3 b6 7. Qc2 a6 8. 0-0-0 Bb7 9. cxd5 exd5 10. g4 Nbd7 11. Bd3 g6 12. h4 Ne4 13. Nxe4 dxe4 14. Bxe4 Bxe4 15. Qxe4 Nf6 16. Qc6 Nxg4 17. Rd2 Qe8 18. Qxe8 Rfxe8 19. h5 c5 20. hxg6 hxg6 21. d5 Bf6 22. Ng5 Bxg5 23. Bxg5 Ra7 24. d6 Rd7 25. Be7 Ne5 26. Rhd1 Nc6 27. Bg5 Re6 28. a3 Na5 29. Rd5 Nb7 30. Bf4 c4 31. R1d4 b5 32. Kc2 1-0

[Event "URS-PGR rapid"]
[Site "Ponta Grossa"]
[Date "1991.07.??"]
[Round "3"]
[White "Martelo, Miguel Angelo Ditz"]
[Black "Lubinka, Inna"]
[Result "1/2-1/2"]
[ECO "C00"]
[PlyCount "72"]
[EventDate "1991.07.??"]
[EventType "schev (rapid)"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e6 2. c4 d5 3. exd5 exd5 4. cxd5 Nf6 5. Bb5+ Bd7 6. Bc4 Bd6 7. Nf3 0-0 8. 0-0 Bg4 9. Nc3 Nbd7 10. d4 Nb6 11. Bb3 Be7 12. Re1 Re8 13. Bg5 h6 14. Bxf6 Bxf6 15. Rxe8+ Qxe8 16. h3 Bxf3 17. Qxf3 Bxd4 18. Rd1 Be5 19. g3 Qd7 20. Kg2 Rd8 21. Qe4 Bf6 22. a4 Nc8 23. Bc2 g6 24. h4 Nd6 25. Qe3 Kg7 26. Qxa7 Qg4 27. Qe3 Nc4 28. Qe4 Qxe4+ 29. Nxe4 Nxb2 30. Rb1 Bd4 31. Bb3 b6 32. Nd2 Nd3 33. Nf3 Bf6 34. Rd1 Nc5 35. Bc2 Ra8 36. d6 cxd6 1/2-1/2

[Event "URS-PGR rapid"]
[Site "Ponta Grossa"]
[Date "1991.07.??"]
[Round "4"]
[White "Martelo, Miguel Angelo Ditz"]
[Black "Lukin, Andrei M"]
[Result "1/2-1/2"]
[ECO "B22"]
[BlackElo "2445"]
[PlyCount "75"]
[EventDate "1991.07.??"]
[EventType "schev (rapid)"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 Nf6 5. Nf3 Bg4 6. Be2 e6 7. 0-0 Nc6 8. Be3 cxd4 9. cxd4 Be7 10. Nc3 Qd6 11. Rc1 0-0 12. h3 Bh5 13. Qd2 Rfd8 14. Rfd1 a6 15. Bf4 Qb4 16. a3 Qb3 17. g4 Bg6 18. g5 Nd5 19. Nxd5 Qxd5 20. Qe3 Bh5 21. Ne5 Bxe2 22. Nxc6 bxc6 23. Qxe2 a5 24. Qe5 Qb3 25. Qc7 Bf8 26. Be3 Qxb2 27. Rb1 Qc2 28. Rdc1 Qf5 29. Rb7 Rac8 30. Qb6 Qxh3 31. Rxc6 Qg4+ 32. Kf1 Qf3 33. Rcc7 e5 34. Rxf7 Qh1+ 35. Ke2 exd4 36. Rxg7+ Bxg7 37. Rxg7+ Kh8 38. Rg8+ 1/2-1/2

[Event "URS-PGR rapid"]
[Site "Ponta Grossa"]
[Date "1991.07.??"]
[Round "5"]
[White "Martelo, Miguel Angelo Ditz"]
[Black "Onischuk, Alexander"]
[Result "0-1"]
[ECO "C30"]
[BlackElo "2380"]
[PlyCount "92"]
[EventDate "1991.07.??"]
[EventType "schev (rapid)"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e5 2. f4 Qh4+ 3. g3 Qe7 4. fxe5 d6 5. Nc3 dxe5 6. Nf3 Nf6 7. Bg2 Bg4 8. d3 Nbd7 9. Be3 c6 10. Qd2 h6 11. 0-0 Qe6 12. Qf2 Bxf3 13. Bxf3 Bd6 14. Rae1 0-0 15. Qg2 Bc5 16. Bd1 Qe7 17. Qf2 Nh7 18. Bxc5 Qxc5 19. Qxc5 Nxc5 20. Rf5 f6 21. h4 Ne6 22. Ne2 Rfd8 23. Rf3 a5 24. c3 a4 25. Bc2 b5 26. Rd1 c5 27. Rff1 b4 28. cxb4 cxb4 29. b3 a3 30. Bb1 Nhf8 31. Rc1 Rac8 32. Kf2 Nd7 33. Ke3 Nb6 34. Rxc8 Rxc8 35. Rc1 Rxc1 36. Nxc1 Nd4 37. Ne2 Nxe2 38. Kxe2 Nc8 39. d4 Nd6 40. dxe5 Nb5 41. Kd3 fxe5 42. Kc4 Nc3 43. Kxb4 Nxb1 44. Kc5 Nc3 45. b4 Nxa2 46. b5 Nc3 0-1

[Event "URS-PGR rapid"]
[Site "Ponta Grossa"]
[Date "1991.07.??"]
[Round "1"]
[White "Martelo, Miguel Angelo Ditz"]
[Black "Tseshkovsky, Vitaly"]
[Result "0-1"]
[ECO "C33"]
[BlackElo "2490"]
[PlyCount "133"]
[EventDate "1991.07.??"]
[EventType "schev (rapid)"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e5 2. f4 exf4 3. Bc4 d5 4. Bxd5 Nf6 5. Nc3 Bb4 6. Nf3 Bxc3 7. dxc3 c6 8. Bc4 Qxd1+ 9. Kxd1 0-0 10. Bxf4 Nxe4 11. Re1 Nf6 12. Ke2 Nbd7 13. Bd6 Re8+ 14. Kf1 Nb6 15. Bd3 Be6 16. Be5 Nfd7 17. Bg3 Nc5 18. Re5 Nbd7 19. Re3 Nf6 20. Nd4 Nd5 21. Ree1 Bd7 22. Bd6 Nxd3 23. cxd3 b6 24. Nf3 Bf5 25. d4 Ne3+ 26. Kf2 Nc2 27. Rxe8+ Rxe8 28. Rc1 f6 29. Ne1 Ne3 30. b3 g5 31. Nf3 Ng4+ 32. Kg1 Re2 33. a3 Be4 34. Rf1 Ne3 35. Rf2 Rxf2 36. Kxf2 Nd1+ 37. Kg3 Nxc3 38. Bb8 a6 39. Ba7 Bxf3 40. Kxf3 Nd5 41. Ke4 Kf7 42. Bb8 h5 43. Bd6 Ke6 44. Bf8 b5 45. g3 a5 46. Bc5 a4 47. bxa4 Nc3+ 48. Kd3 Nxa4 49. Bf8 g4 50. Bb4 Nb6 51. Bc5 Nd5 52. Bf8 f5 53. Bh6 f4 54. gxf4 Kf5 55. Bf8 h4 56. Ke2 Nxf4+ 57. Kf2 Ne6 58. Be7 h3 59. Ke3 g3 60. Bd6 g2 61. Kf2 Nxd4 62. Bc5 Ke4 63. Bb6 Nc2 64. Kg3 Ne3 65. Kf2 Ng4+ 66. Kg3 Ne3 67. Kf2 0-1

[Event "BRA-ch U18 1st"]
[Site "Paranavai"]
[Date "1987.12.??"]
[Round "2"]
[White "Junqueira, Alvaro"]
[Black "Martelo, Miguel Angelo Ditz"]
[Result "1/2-1/2"]
[ECO "A05"]
[PlyCount "63"]
[EventDate "1987.12.04"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c5 2. d3 d6 3. Nf3 Nf6 4. g3 g6 5. Bg2 Bg7 6. Nbd2 0-0 7. 0-0 Nc6 8. Re1 Qc7 9. c3 e5 10. Nf1 Re8 11. Ne3 h6 12. h4 Be6 13. Nh2 Kh7 14. Neg4 Nxg4 15. Nxg4 h5 16. Ne3 Qd7 17. Qe2 Rg8 18. Kh2 Raf8 19. Nd5 Ne7 20. Nxe7 Qxe7 21. Bh3 f5 22. exf5 Bxf5 23. Bxf5 Rxf5 24. Be3 Rgf8 25. Kg2 d5 26. f4 e4 27. dxe4 Qxe4+ 28. Qf3 Qc4 29. Qe2 Qxe2+ 30. Rxe2 d4 31. cxd4 cxd4 32. Bf2 1/2-1/2

[Event "BRA-ch U18 1st"]
[Site "Paranavai"]
[Date "1987.12.??"]
[Round "5"]
[White "Martelo, Miguel Angelo Ditz"]
[Black "Blanco Pereira, Jose"]
[Result "0-1"]
[ECO "B02"]
[PlyCount "130"]
[EventDate "1987.12.04"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 Nf6 2. Nc3 d5 3. e5 d4 4. Nce2 Ne4 5. c3 Nc5 6. Nxd4 Qd5 7. Qe2 g6 8. b4 Ne6 9. Qb5+ Qxb5 10. Bxb5+ c6 11. Bc4 Nc7 12. f4 a5 13. Bb2 Bh6 14. g3 0-0 15. Nge2 axb4 16. cxb4 e6 17. Kf2 Rd8 18. h4 Bf8 19. a3 Nd7 20. h5 c5 21. bxc5 Nxc5 22. hxg6 hxg6 23. Ke3 b5 24. Nxb5 Nxb5 25. Bxb5 Bb7 26. Rhd1 Nb3 27. Rab1 Bxa3 28. Bc3 Bd5 29. d4 Rab8 30. Bd3 Bb4 31. Bxb4 Rxb4 32. Nc3 Ba8 33. Bc2 Rdb8 34. Rd3 Na5 35. Rxb4 Rxb4 36. Na2 Rb2 37. Rc3 Rxa2 38. Bb1 Ra3 39. Kd2 Rxc3 40. Kxc3 Bd5 41. Kb4 Nc6+ 42. Kc5 Kf8 43. Bd3 Ke7 44. Bb5 Kd7 45. g4 Kc7 46. f5 Nd8 47. Be8 gxf5 48. gxf5 Nb7+ 49. Kb4 exf5 50. Kc3 Kd8 51. Bb5 Ke7 52. Bd3 f4 53. Kd2 f3 54. Ke1 Nd8 55. Kf2 Ne6 56. Ke3 Ng5 57. Kf4 Ne6+ 58. Ke3 Nf8 59. Bc2 Ng6 60. Bd1 Ke6 61. Bxf3 Bxf3 62. Kxf3 Kd5 63. Ke3 Nh4 64. Kd2 Kxd4 65. Ke2 Kxe5 0-1

[Event "BRA-ch U18 1st"]
[Site "Paranavai"]
[Date "1987.12.??"]
[Round "3"]
[White "Martelo, Miguel Angelo Ditz"]
[Black "Martins, Carlos"]
[Result "1/2-1/2"]
[ECO "C43"]
[PlyCount "68"]
[EventDate "1987.12.04"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 4. dxe5 d5 5. Bd3 f5 6. exf6 Nxf6 7. 0-0 Be7 8. Bg5 0-0 9. Re1 Bg4 10. Nbd2 c6 11. Qe2 Bb4 12. c3 Bc5 13. h3 Bd7 14. Ne5 a5 15. Ndf3 Qb6 16. Bxf6 Rxf6 17. Qc2 h6 18. Bh7+ Kh8 19. Re2 Be6 20. Rae1 Nd7 21. Ng6+ Kxh7 22. Nf8+ Kg8 23. Nxe6 Rc8 24. Nfd4 Re8 25. Re3 Nf8 26. Nxc5 Rxe3 27. Rxe3 Qxc5 28. Qe2 Qd6 29. Re8 c5 30. Nb5 Qb6 31. a4 Re6 32. Rxe6 Qxe6 33. Qxe6+ Nxe6 34. Nd6 Nd8 1/2-1/2

[Event "BRA-ch U18 1st"]
[Site "Paranavai"]
[Date "1987.12.??"]
[Round "1"]
[White "Martelo, Miguel Angelo Ditz"]
[Black "Rocha, Alexandre Goncalves"]
[Result "1-0"]
[ECO "C81"]
[PlyCount "113"]
[EventDate "1987.12.04"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Qe2 Be7 10. Rd1 0-0 11. c4 bxc4 12. Bxc4 Bc5 13. Be3 Bxe3 14. Qxe3 Qb8 15. Bb3 Na5 16. Nd4 Nxb3 17. Nxb3 Qb6 18. Qxb6 cxb6 19. f3 Nc5 20. Nd4 Rac8 21. Nc3 b5 22. Nde2 Rfd8 23. Rd4 Kf8 24. Rad1 Nd7 25. f4 Nb6 26. h3 Nc4 27. b3 Ne3 28. R1d2 Nf5 29. R4d3 Ne7 30. g4 b4 31. Nd1 g6 32. Ne3 h5 33. Nd4 Rc1+ 34. Kf2 hxg4 35. hxg4 Nc6 36. Nxc6 Rxc6 37. f5 gxf5 38. gxf5 Bc8 39. Rxd5 Rxd5 40. Rxd5 Ke7 41. Kf3 Rc1 42. Rd4 Ra1 43. Rd2 Bb7+ 44. Kf4 Bc6 45. Rd6 Bb7 46. f6+ Ke8 47. Rb6 Bc8 48. Rxb4 Rxa2 49. Nd5 Rf2+ 50. Ke3 Rc2 51. Rb8 Rc5 52. Kd4 Rc1 53. Ne7 Rd1+ 54. Kc3 Re1 55. Rxc8+ Kd7 56. Rc5 Rc1+ 57. Kb4 1-0

[Event "BRA-ch U18 1st"]
[Site "Paranavai"]
[Date "1987.12.??"]
[Round "4"]
[White "Miyasato, Helio Augusto"]
[Black "Martelo, Miguel Angelo Ditz"]
[Result "1/2-1/2"]
[ECO "B99"]
[PlyCount "89"]
[EventDate "1987.12.04"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 Qc7 9. 0-0-0 Nbd7 10. Kb1 b5 11. a3 Bb7 12. Bd3 0-0 13. f5 e5 14. Nb3 Rac8 15. h4 h6 16. Be3 Nb6 17. g4 Nc4 18. Bc1 Nxa3+ 19. bxa3 Qxc3 20. g5 Nxe4 21. Qe3 Nxg5 22. Rhg1 e4 23. Bb2 Qc7 24. hxg5 Bxg5 25. Qd4 f6 26. Bxe4 Bxe4 27. Qxe4 Kh8 28. Rh1 Rfe8 29. Qg2 Qc4 30. Nd4 Qc5 31. Ne6 Qxf5 32. Nxg5 fxg5 33. Rxh6+ Kg8 34. Rhxd6 Rc7 35. R6d5 Qh7 36. Rxg5 Rec8 37. Rg1 Qxc2+ 38. Qxc2 Rxc2 39. Rxg7+ Kf8 40. Rh1 Rxb2+ 41. Kxb2 Kxg7 42. Rf1 Re8 43. Rf4 Rb8 44. Kc3 Rc8+ 45. Kb4 1/2-1/2

[Event "Brasilia op"]
[Site "Brasilia"]
[Date "1987.04.??"]
[Round "5"]
[White "Abreu, Guilherme Correa"]
[Black "Martelo, Miguel Angelo Ditz"]
[Result "0-1"]
[ECO "D88"]
[PlyCount "54"]
[EventDate "1987.04.??"]
[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. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 c5 7. Bc4 Bg7 8. Ne2 cxd4 9. cxd4 0-0 10. 0-0 Nc6 11. Be3 Na5 12. Bd3 Nc6 13. Bc4 b6 14. Rc1 Bb7 15. d5 Ne5 16. Bb5 a6 17. Bc6 Bxc6 18. dxc6 Qc7 19. Qb3 b5 20. Bf4 Rac8 21. Rfd1 Qb6 22. Bxe5 Bxe5 23. Rd7 Rxc6 24. Rxc6 Qxc6 25. Rxe7 Bd6 26. Ra7 Bc5 27. Qc3 Rc8 0-1

[Event "Brasilia op"]
[Site "Brasilia"]
[Date "1987.04.??"]
[Round "3"]
[White "Capatti, Eduardo"]
[Black "Martelo, Miguel Angelo Ditz"]
[Result "1-0"]
[ECO "B23"]
[PlyCount "73"]
[EventDate "1987.04.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. f4 e6 4. Nf3 d5 5. exd5 exd5 6. d4 Nf6 7. Be2 Be7 8. 0-0 cxd4 9. Nb5 Bc5 10. Nbxd4 0-0 11. Kh1 Re8 12. Nxc6 bxc6 13. Ne5 Qc7 14. Qd3 Ne4 15. Be3 Qb6 16. Bxc5 Qxc5 17. Qf3 Qb6 18. Bd3 f6 19. Qh5 Be6 20. f5 Nc5 21. fxe6 Nxd3 22. Nxd3 Rxe6 23. Rae1 Rae8 24. Rxe6 Rxe6 25. Qd1 c5 26. Re1 c4 27. Rxe6 Qxe6 28. Nf2 Qe5 29. Qd2 Kf8 30. c3 Qf5 31. Qd4 Qb1+ 32. Nd1 Qf5 33. h3 a5 34. a3 Qe6 35. Ne3 g5 36. Nxd5 Qe1+ 37. Kh2 1-0

[Event "Brasilia op"]
[Site "Brasilia"]
[Date "1987.04.??"]
[Round "1"]
[White "Correa, Aron Antunes"]
[Black "Martelo, Miguel Angelo Ditz"]
[Result "1-0"]
[ECO "D85"]
[WhiteElo "2265"]
[PlyCount "89"]
[EventDate "1987.04.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. c4 Nf6 2. Nf3 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. d4 c5 8. Rb1 0-0 9. Be2 cxd4 10. cxd4 Nc6 11. d5 Ne5 12. Nxe5 Bxe5 13. 0-0 b6 14. f4 Bg7 15. Ba3 Bb7 16. Rc1 a6 17. Bf3 Qd7 18. e5 Rac8 19. Rxc8 Bxc8 20. Qd4 b5 21. Qc5 Re8 22. Rc1 a5 23. Be2 Ba6 24. Qb6 Qxd5 25. Qxa6 Qd4+ 26. Kh1 Qxf4 27. Rf1 Qxe5 28. Qxb5 Qxb5 29. Bxb5 Rb8 30. Rb1 e6 31. g3 Rd8 32. Bb2 Bf8 33. Bc3 Bb4 34. Bxb4 axb4 35. Bc4 e5 36. Rxb4 e4 37. Rb7 Rd1+ 38. Kg2 Rd2+ 39. Kg1 Rd1+ 40. Kf2 Rd2+ 41. Ke3 Rxh2 42. Rxf7 Kh8 43. Kxe4 Rg2 44. Kf4 Rd2 45. Kg5 1-0

[Event "Brasilia op"]
[Site "Brasilia"]
[Date "1987.04.??"]
[Round "2"]
[White "Martelo, Miguel Angelo Ditz"]
[Black "De Assis, Claudio Henrique J"]
[Result "1/2-1/2"]
[ECO "B90"]
[PlyCount "78"]
[EventDate "1987.04.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. h3 Nc6 7. g4 h6 8. Bg2 Qc7 9. Be3 e5 10. Nde2 Ne7 11. Qd2 Ng6 12. 0-0-0 Be6 13. Ng3 Nh4 14. Bf1 Rc8 15. Nf5 Bxf5 16. gxf5 Qc6 17. Qd3 b5 18. a3 Nxf5 19. Be2 Nxe3 20. fxe3 g6 21. Rhf1 Nd7 22. Nd5 Nc5 23. Nf6+ Kd8 24. Qc3 Qb7 25. Qxe5 Qe7 26. Rxd6+ Qxd6 27. Rd1 Nb3+ 28. Kb1 Nd2+ 29. Rxd2 Qxd2 30. Qe8+ Kc7 31. Qxf7+ Kb8 32. Nd7+ Ka8 33. Bd3 Qe1+ 34. Ka2 Qxe3 35. Qe6 Bc5 36. Qxa6+ Ba7 37. Bxb5 Qxe4 38. Nb6+ Kb8 39. Nd7+ Ka8 1/2-1/2

[Event "Brasilia op"]
[Site "Brasilia"]
[Date "1987.04.??"]
[Round "6"]
[White "Martelo, Miguel Angelo Ditz"]
[Black "De Souza, Airton Ferreira"]
[Result "0-1"]
[ECO "C06"]
[PlyCount "59"]
[EventDate "1987.04.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. Bd3 c5 6. c3 Nc6 7. Ne2 cxd4 8. cxd4 f6 9. Nf4 Nxd4 10. Qh5+ Ke7 11. exf6+ Nxf6 12. Ng6+ hxg6 13. Qxh8 Kf7 14. Qh4 e5 15. f3 Qb6 16. Qg3 Bf5 17. Bb1 Rc8 18. Bxf5 gxf5 19. Kd1 f4 20. Qf2 Bc5 21. Qe1 Bb4 22. Qxe5 Re8 23. Qxf4 Qc5 24. Qxd4 Qxd4 25. a3 Bxd2 26. Bxd2 Qa4+ 27. Kc1 Rc8+ 28. Kb1 Qc2+ 29. Ka2 Qxd2 30. Rad1 0-1

[Event "BRA-chT Inter-Clubes"]
[Site "Curitiba"]
[Date "1987.04.??"]
[Round "2"]
[White "Martelo, Miguel Angelo Ditz"]
[Black "Gutierrez, Celso Luis"]
[Result "1/2-1/2"]
[ECO "C95"]
[PlyCount "107"]
[EventDate "1987.04.30"]
[EventType "team-swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]
[WhiteTeam "Pontagrossense AX"]
[BlackTeam "Sao Caetano do Sul CX"]
[WhiteTeamCountry "BRA"]
[BlackTeamCountry "BRA"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 d6 8. c3 0-0 9. h3 Nb8 10. d4 Nbd7 11. Nbd2 Bb7 12. Bc2 Re8 13. Nf1 Bf8 14. Ng3 g6 15. a4 c5 16. d5 c4 17. Be3 Qe7 18. Qd2 Rec8 19. Ra3 Nc5 20. axb5 axb5 21. Rea1 Rxa3 22. Rxa3 Ra8 23. Bxc5 dxc5 24. Rxa8 Bxa8 25. Qd1 Qc7 26. Qa1 Bb7 27. Qa7 Bd6 28. Nd2 Nd7 29. Ngf1 Qb6 30. Qa1 Qa6 31. Qxa6 Bxa6 32. Ne3 Nb6 33. Nf3 f6 34. g4 Bb7 35. Bd1 Bc8 36. Kg2 Bd7 37. Bc2 Kg7 38. Bd1 Bc7 39. Bc2 Nc8 40. g5 h5 41. gxf6+ Kxf6 42. Nd2 Nd6 43. Bb1 Bd8 44. Bc2 Kg5 45. Kg3 Be7 46. Nf3+ Kf6 47. Bb1 Bf8 48. Nd2 Bh6 49. Ndf1 Bf4+ 50. Kg2 Kg5 51. Nd2 Nb7 52. Bc2 Na5 53. Bd1 Bc8 54. Bc2 1/2-1/2

[Event "Brasilia op"]
[Site "Brasilia"]
[Date "1987.04.??"]
[Round "4"]
[White "Martelo, Miguel Angelo Ditz"]
[Black "Lee, Eduardo Won Seong"]
[Result "1-0"]
[ECO "B33"]
[PlyCount "55"]
[EventDate "1987.04.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6 8. Bxf6 gxf6 9. Na3 d5 10. exd5 Bxa3 11. bxa3 Qa5 12. Qd2 Nd4 13. Bd3 Bh3 14. Kf1 Nf3 15. Qe3 Qxc3 16. Bb5+ axb5 17. Qxc3 Bg4 18. gxf3 Bh3+ 19. Ke2 Rc8 20. Qd3 Rc5 21. Rab1 Bd7 22. a4 0-0 23. Rhg1+ Kh8 24. axb5 Rfc8 25. Rb2 f5 26. Qe3 Bxb5+ 27. Rxb5 Rxc2+ 28. Kd1 1-0

[Event "Brasilia op"]
[Site "Brasilia"]
[Date "1987.04.??"]
[Round "7"]
[White "Serafini, Osmar A Jr"]
[Black "Martelo, Miguel Angelo Ditz"]
[Result "0-1"]
[ECO "D04"]
[PlyCount "58"]
[EventDate "1987.04.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. Nf3 Nf6 2. b3 g6 3. Bb2 Bg7 4. e3 0-0 5. d4 d5 6. c4 c6 7. Nbd2 Nbd7 8. h3 Ne8 9. cxd5 cxd5 10. Bd3 f5 11. 0-0 Ndf6 12. Ne5 Be6 13. Rc1 Nd6 14. f3 Nh5 15. Qe1 Nf7 16. Nxf7 Rxf7 17. g4 Nf6 18. gxf5 gxf5 19. f4 Bh8 20. Kh2 Rg7 21. Rg1 Ne4 22. Nf3 Rc8 23. Rxg7+ Bxg7 24. Rxc8 Qxc8 25. Qg1 Qe8 26. Bxe4 fxe4 27. Ng5 Bd7 28. h4 Qh5 29. Qf2 Qg4 0-1

[Event "BRA-ch U16"]
[Site "Caioba"]
[Date "1986.09.??"]
[Round "4"]
[White "Caldeira, Adriano"]
[Black "Martelo, Miguel Angelo Ditz"]
[Result "1-0"]
[ECO "B99"]
[PlyCount "33"]
[EventDate "1986.09.01"]
[EventType "tourn"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 Qc7 9. 0-0-0 Nbd7 10. Bd3 b5 11. Rhe1 Bb7 12. Qg3 b4 13. Nd5 exd5 14. exd5 Kf8 15. Nf5 Re8 16. Bh6 Nh5 17. Bxg7+ 1-0

[Event "BRA-ch U16"]
[Site "Caioba"]
[Date "1986.09.??"]
[Round "6"]
[White "Da Silva De Sena, Jefferson Ryan F"]
[Black "Martelo, Miguel Angelo Ditz"]
[Result "1-0"]
[ECO "B45"]
[PlyCount "153"]
[EventDate "1986.09.01"]
[EventType "tourn"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Ndb5 Bb4 7. Bf4 Nxe4 8. Qf3 d5 9. Nc7+ Kf8 10. 0-0-0 g5 11. Nxe4 gxf4 12. Nxa8 Qa5 13. Nc3 d4 14. Nb1 Qxa2 15. Qxf4 e5 16. Qh6+ Ke7 17. Qg5+ Kf8 18. Bb5 Rg8 19. Qh6+ Ke7 20. Bxc6 bxc6 21. Qxc6 Bd7 22. Qe4 Kd6 23. f4 f6 24. fxe5+ fxe5 25. Rhf1 Qe6 26. Rxd4+ exd4 27. Qxd4+ Qd5 28. Rf6+ Be6 29. Qxb4+ Kd7 30. Nc7 Kxc7 31. Qe7+ Bd7 32. Rf3 Rxg2 33. Rc3+ Kb7 34. Qb4+ Bb5 35. Qe7+ Bd7 36. Qb4+ Bb5 37. b3 Rg1+ 38. Kb2 Qg5 39. Qe4+ Kb8 40. Qe3 Bd7 41. Qxg5 Rxg5 42. Rc4 Rg2 43. h4 h5 44. Rd4 Bg4 45. Rd2 Rg3 46. Rh2 Kc7 47. Nc3 Kc6 48. Ne4 Re3 49. Nf6 Bf3 50. Rh3 Kd6 51. Nh7 Re7 52. Rxf3 Rxh7 53. Rf5 Ke6 54. Rg5 Kd6 55. Kc3 Rc7+ 56. Kd3 Rh7 57. c4 Rh8 58. b4 Rb8 59. b5 Rf8 60. Rxh5 Rf3+ 61. Kd4 Rf4+ 62. Kc3 Rf3+ 63. Kb4 Rf1 64. Rh6+ Kc7 65. h5 Rb1+ 66. Kc5 Rg1 67. Rg6 Rh1 68. Rg7+ Kd8 69. Rh7 Rg1 70. h6 Rg5+ 71. Kc6 Rg6+ 72. Kb7 Rg4 73. c5 Rg5 74. c6 Rxb5+ 75. Kxa7 Rc5 76. Rg7 Rxc6 77. h7 1-0

[Event "BRA-ch U16"]
[Site "Caioba"]
[Date "1986.09.??"]
[Round "2"]
[White "Hashizume, Marcelo"]
[Black "Martelo, Miguel Angelo Ditz"]
[Result "1-0"]
[ECO "A09"]
[PlyCount "73"]
[EventDate "1986.09.01"]
[EventType "tourn"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. Nf3 d5 2. c4 dxc4 3. Na3 Nf6 4. Nxc4 Nc6 5. g3 g6 6. b3 Bg7 7. Bb2 0-0 8. Bg2 Be6 9. 0-0 Qc8 10. Ng5 Bd7 11. Re1 h6 12. Ne4 Nxe4 13. Bxe4 Bxb2 14. Nxb2 Bh3 15. Qc2 Qe6 16. Rac1 Nb4 17. Qc4 Nxa2 18. Qxe6 Bxe6 19. Rxc7 Bxb3 20. Rxb7 Be6 21. Rxe7 Rab8 22. Nd3 a6 23. Ra7 Bc4 24. Ne5 Bb5 25. Bd5 Nb4 26. Bxf7+ Kg7 27. Bc4+ Kf6 28. Bxb5 Kxe5 29. Bxa6 Nc6 30. Rb7 Rbd8 31. Bb5 Nd4 32. Re7+ Kd6 33. Rb7 Kc5 34. Rc1+ Kd6 35. Rb6+ Kd5 36. Bd3 Rde8 37. e4+ 1-0

[Event "BRA-ch U16"]
[Site "Caioba"]
[Date "1986.09.??"]
[Round "3"]
[White "Martelo, Miguel Angelo Ditz"]
[Black "Chiah, Jamal Khodr"]
[Result "1-0"]
[ECO "B33"]
[PlyCount "125"]
[EventDate "1986.09.01"]
[EventType "tourn"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Ndb5 d6 7. Bf4 e5 8. Bg5 a6 9. Bxf6 gxf6 10. Na3 b5 11. Nd5 f5 12. Bd3 Rg8 13. exf5 Bb7 14. Be4 Rb8 15. f6 h6 16. c3 b4 17. Nc4 bxc3 18. bxc3 Ba8 19. Qa4 a5 20. Ne7 Bxe7 21. Bxc6+ Bxc6 22. Qxc6+ Kf8 23. fxe7+ Kxe7 24. Rd1 Rg6 25. Qd5 Rc8 26. Nxa5 Qc7 27. c4 Qb6 28. Qb7+ Qxb7 29. Nxb7 Rxc4 30. 0-0 Rcg4 31. g3 h5 32. Ra1 h4 33. Kh1 f5 34. a4 Rh6 35. a5 hxg3 36. fxg3 Rxg3 37. Rxf5 Rb3 38. Raf1 Rh7 39. a6 Ra3 40. Rf6 Rh8 41. Nxd6 Ra2 42. R1f2 Rxf2 43. Rxf2 Kxd6 44. Ra2 Ra8 45. a7 Ke6 46. Kg2 Kf5 47. Kf3 Ke6 48. Ke4 Kf6 49. Ra6+ Ke7 50. Kxe5 Kd7 51. h4 Kc7 52. h5 Kb7 53. Ra1 Re8+ 54. Kf6 Ka8 55. h6 Rg8 56. h7 Rc8 57. Rh1 Kxa7 58. h8Q Rxh8 59. Rxh8 Kb6 60. Rh5 Kc6 61. Ke6 Kc7 62. Rc5+ Kd8 63. Rc6 1-0

[Event "BRA-ch U16"]
[Site "Caioba"]
[Date "1986.09.??"]
[Round "1"]
[White "Martelo, Miguel Angelo Ditz"]
[Black "Disconzi da Silva, Rodrigo"]
[Result "0-1"]
[ECO "C60"]
[PlyCount "150"]
[EventDate "1986.09.01"]
[EventType "tourn"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 g6 4. d4 exd4 5. Nxd4 Bg7 6. Be3 Nge7 7. Nc3 a6 8. Be2 d6 9. Qd2 Bd7 10. a4 Ne5 11. Bh6 Bxh6 12. Qxh6 Ng8 13. Qd2 Nf6 14. 0-0 0-0 15. Nf3 Nc6 16. h3 Kg7 17. Rfe1 Re8 18. Bf1 Ne5 19. Be2 Bc6 20. Qd4 Qd7 21. Rad1 Rad8 22. Nxe5 dxe5 23. Qc4 Qc8 24. Bf3 Rxd1 25. Rxd1 Qe6 26. Qxe6 Rxe6 27. b3 Ne8 28. Kf1 Rd6 29. Ke2 Rxd1 30. Nxd1 Nd6 31. Nc3 Kf6 32. Ke3 Ke6 33. Be2 f5 34. Bd3 b5 35. f4 exf4+ 36. Kxf4 g5+ 37. Ke3 Ke5 38. exf5 Bxg2 39. axb5 axb5 40. f6 Kxf6 41. Bxh7 Ke5 42. Bd3 c6 43. Ne2 Bxh3 44. Ng1 Bg2 45. Kf2 Be4 46. Nf3+ Kf6 47. Bxe4 Nxe4+ 48. Ke3 Nd6 49. Kd4 g4 50. Ng1 Nb7 51. Ke4 Kg5 52. Ne2 Kh4 53. Ke5 Kh3 54. Ke6 Kg2 55. Kd7 Kf3 56. Nd4+ Ke4 57. Ne2 c5 58. Ng3+ Kd4 59. Nf5+ Kc3 60. Ne3 g3 61. Kc6 b4 62. Kxb7 Kd2 63. Nf1+ Kxc2 64. Nxg3 Kxb3 65. Ne4 c4 66. Nd2+ Kc3 67. Ne4+ Kc2 68. Kb6 b3 69. Kc5 b2 70. Kxc4 b1Q 71. Nc5 Qd1 72. Ne6 Qd3+ 73. Kc5 Kc3 74. Nc7 Qd4+ 75. Kc6 Kc4 0-1

[Event "BRA-ch U16"]
[Site "Caioba"]
[Date "1986.09.??"]
[Round "7"]
[White "Martelo, Miguel Angelo Ditz"]
[Black "Matsuura, Everaldo"]
[Result "0-1"]
[ECO "C99"]
[PlyCount "79"]
[EventDate "1986.09.01"]
[EventType "tourn"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 0-0 8. c3 d6 9. h3 Na5 10. Bc2 c5 11. d4 Qc7 12. Nbd2 cxd4 13. cxd4 Bb7 14. Nf1 Rac8 15. Bd3 d5 16. Nxe5 dxe4 17. Bb1 Rfd8 18. Bf4 Qb6 19. Be3 Bc5 20. Qe2 Bxd4 21. Ng4 Nc4 22. Bxd4 Rxd4 23. b3 Nxg4 24. hxg4 Na3 25. Kh1 g6 26. Ng3 Qd8 27. Bxe4 Bxe4 28. Nxe4 Nc2 29. Rac1 Nxe1 30. Rxe1 Qh4+ 31. Kg1 Rcd8 32. Rc1 Qe7 33. Re1 f5 34. gxf5 gxf5 35. Ng3 Qxe2 36. Rxe2 Rd1+ 37. Nf1 f4 38. g3 f3 39. Re3 Ra1 40. Rxf3 0-1

[Event "BRA-ch U16"]
[Site "Caioba"]
[Date "1986.09.??"]
[Round "5"]
[White "Martelo, Miguel Angelo Ditz"]
[Black "Watanabe, Roberto Tadashi"]
[Result "0-1"]
[ECO "A51"]
[PlyCount "94"]
[EventDate "1986.09.01"]
[EventType "tourn"]
[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. c4 e5 3. Bg5 exd4 4. Qxd4 Be7 5. Nc3 Nc6 6. Qd2 d6 7. e4 0-0 8. Nf3 h6 9. Bf4 Re8 10. Rd1 Bf8 11. Bd3 Bg4 12. Qe3 Nh5 13. h3 Nxf4 14. Qxf4 Bh5 15. g4 Bg6 16. 0-0 Ne5 17. Be2 Nxf3+ 18. Bxf3 c6 19. Bg2 Qa5 20. Qd2 Rad8 21. Kh1 f6 22. b3 Bf7 23. Qd3 a6 24. Rb1 b5 25. cxb5 axb5 26. Rfd1 b4 27. Na4 d5 28. exd5 Bxd5 29. Bxd5+ Rxd5 30. Qc4 Kh8 31. Qxc6 Rde5 32. Rd2 R5e6 33. Qf3 Qe5 34. Rbd1 Bd6 35. Qg2 Qf4 36. Qg3 Qxd2 37. Rxd2 Bxg3 38. fxg3 Re2 39. Rxe2 Rxe2 40. Nc5 Rxa2 41. Nd3 Ra3 42. Nc5 Kg8 43. Kg2 Kf7 44. Kf3 Ke7 45. Ke4 Kd6 46. Kd4 Ra1 47. Kc4 Rc1+ 0-1

