[Event "Maringa Aniversario"]
[Site "Maringa"]
[Date "1968.05.??"]
[Round "6"]
[White "Adamowski, Victor"]
[Black "Silveira, Eufrazio"]
[Result "1-0"]
[ECO "C88"]
[PlyCount "71"]
[EventDate "1968.05.??"]
[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. d4 Nxd4 9. Bxf7+ Rxf7 10. Nxe5 c5 11. Nxf7 Kxf7 12. e5 Ne8 13. c3 Ne6 14. Qf3+ Kg8 15. Qxa8 Qc7 16. Qf3 Nf8 17. Bf4 g5 18. Qg3 h6 19. h4 Ng7 20. hxg5 Nh5 21. Qg4 Nxf4 22. Qxf4 Bxg5 23. Qg4 Ng6 24. Qe4 Nf4 25. f3 Bb7 26. Qf5 c4 27. Nd2 Qb6+ 28. Kf1 Nd3 29. Re2 Nf4 30. Rae1 Nd3 31. Ne4 Bxe4 32. Qxe4 Nf4 33. g3 Nh5 34. Kg2 Qe6 35. Rd1 Qf7 36. Qd5 1-0

[Event "Maringa Aniversario"]
[Site "Maringa"]
[Date "1968.05.??"]
[Round "3"]
[White "Bittencourt, Orlindo"]
[Black "Silveira, Eufrazio"]
[Result "1/2-1/2"]
[ECO "B38"]
[PlyCount "42"]
[EventDate "1968.05.??"]
[EventType "tourn"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. c4 c5 2. Nc3 Nc6 3. Nf3 Nf6 4. d4 cxd4 5. Nxd4 g6 6. e4 d6 7. Be2 Bg7 8. Be3 0-0 9. 0-0 Bd7 10. Qd2 Ng4 11. Nxc6 bxc6 12. Bf4 Qa5 13. h3 Ne5 14. Bh6 Be6 15. Bxg7 Kxg7 16. b3 Nd7 17. f4 f5 18. Rad1 fxe4 19. Nxe4 Qxd2 20. Rxd2 d5 21. Ng5 Bg8 1/2-1/2

[Event "Maringa Aniversario"]
[Site "Maringa"]
[Date "1968.05.??"]
[Round "4"]
[White "Mak, Otto"]
[Black "Silveira, Eufrazio"]
[Result "1/2-1/2"]
[ECO "E01"]
[PlyCount "60"]
[EventDate "1968.05.??"]
[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 d5 2. Nf3 Nf6 3. c4 e6 4. Nc3 c6 5. g3 dxc4 6. Ne5 Bb4 7. Bg2 Qc7 8. Nxc4 Nd5 9. Qc2 Nd7 10. 0-0 b5 11. Nd2 Qd8 12. Nce4 Bb7 13. Nc5 Bxc5 14. dxc5 N7f6 15. a4 a6 16. Nb3 0-0 17. Bg5 h6 18. Bd2 Qc7 19. e4 Ne7 20. Qc3 e5 21. Qf3 Bc8 22. h3 Be6 23. Ba5 Qc8 24. Kh2 Nxe4 25. Qxe4 Bxb3 26. axb5 axb5 27. Qxe5 Qe6 28. Bc3 Qxe5 29. Bxe5 Nd5 30. Bxd5 Bxd5 1/2-1/2

[Event "Maringa Aniversario"]
[Site "Maringa"]
[Date "1968.05.??"]
[Round "1"]
[White "Rocha, Antonio Cavilhas"]
[Black "Silveira, Eufrazio"]
[Result "1-0"]
[ECO "C89"]
[PlyCount "45"]
[EventDate "1968.05.??"]
[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 d5 9. d4 dxe4 10. Nxe5 Bb7 11. Nd2 Bd6 12. f4 exf3 13. Ndxf3 Nxe5 14. dxe5 Bc5+ 15. Be3 Bxe3+ 16. Rxe3 Ng4 17. Rd3 Qe7 18. Rd7 Qc5+ 19. Qd4 Qxd4+ 20. cxd4 Rad8 21. Bxf7+ Kh8 22. Rxd8 Rxd8 23. e6 1-0

[Event "Maringa Aniversario"]
[Site "Maringa"]
[Date "1968.05.??"]
[Round "2"]
[White "Silveira, Eufrazio"]
[Black "Aiex, Domingos"]
[Result "0-1"]
[ECO "A40"]
[PlyCount "78"]
[EventDate "1968.05.??"]
[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. Nf3 g6 3. e3 Bg7 4. Bd3 c5 5. 0-0 Qc7 6. c3 0-0 7. Nbd2 d5 8. Qe2 Nc6 9. dxc5 a5 10. e4 dxe4 11. Nxe4 Nxe4 12. Bxe4 Ne5 13. Be3 Nd7 14. Rfe1 Nxc5 15. Qc4 Ne6 16. Qxc7 Nxc7 17. Bd4 Ne6 18. Bxg7 Kxg7 19. Ne5 Nc5 20. Bc2 Be6 21. b4 Na6 22. Nd3 Rac8 23. Nf4 Rxc3 24. Nxe6+ fxe6 25. Bb3 Nxb4 26. Rxe6 Rc7 27. Rae1 Re8 28. Ba4 Nc6 29. g3 Kf8 30. R1e4 Rd8 31. Rf4+ Kg7 32. Rc4 Kf7 33. Ree4 Rd6 34. Bb3 Kg7 35. Re5 Kf6 36. Re3 e5 37. f4 Re7 38. fxe5+ Nxe5 39. Rf4+ Kg7 0-1

[Event "Maringa Aniversario"]
[Site "Maringa"]
[Date "1968.05.??"]
[Round "5"]
[White "Silveira, Eufrazio"]
[Black "Trois, Francisco R Torres"]
[Result "0-1"]
[ECO "A05"]
[PlyCount "38"]
[EventDate "1968.05.??"]
[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 Nf6 2. g3 g6 3. Bg2 Bg7 4. e3 0-0 5. 0-0 d6 6. d4 Nc6 7. c4 Bg4 8. h3 Bxf3 9. Bxf3 Nd7 10. b3 e5 11. Bb2 Re8 12. Nd2 exd4 13. Bxc6 dxe3 14. fxe3 Bxb2 15. Bxd7 Qxd7 16. Rb1 Rxe3 17. Rxb2 Rxg3+ 18. Kf2 Qxh3 19. Ne4 Qg2+ 0-1

[Event "Maringa Aniversario"]
[Site "Maringa"]
[Date "1968.05.??"]
[Round "7"]
[White "Silveira, Eufrazio"]
[Black "Van Riemsdijk, Herman Claudius"]
[Result "0-1"]
[ECO "C91"]
[PlyCount "70"]
[EventDate "1968.05.??"]
[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. d4 Bg4 10. d5 Na5 11. Bc2 Ne8 12. h3 Bd7 13. Nbd2 g6 14. Nf1 Rb8 15. Qd2 Bf6 16. N3h2 Bg7 17. a4 bxa4 18. Bxa4 Bxa4 19. Rxa4 Nb3 20. Qc2 Qc8 21. Be3 f5 22. Nd2 Nxd2 23. Bxd2 fxe4 24. Rea1 Qb7 25. Qxe4 Nf6 26. Qd3 Qxd5 27. Qxd5+ Nxd5 28. Rxa6 Rxb2 29. Be1 e4 30. c4 Nf4 31. Ra8 Nd3 32. Rxf8+ Kxf8 33. Ra8+ Ke7 34. Ba5 Rb1+ 35. Nf1 Bd4 0-1

