[Event "BRA-ch U20"]
[Site "Concordia"]
[Date "2021.10.03"]
[Round "6"]
[White "Ribeiro, Guilherme"]
[Black "Araujo, Lucas Santos"]
[Result "1-0"]
[ECO "C25"]
[PlyCount "39"]
[EventDate "2021.09.30"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. Nc3 e5 2. e4 Nc6 3. Nd5 Nf6 4. Bc4 Nxe4 5. Qh5 Na5 6. Bd3 c6 7. Bxe4 g6 8. Qxe5+ Be7 9. Qxh8+ Bf8 10. Nf6+ Ke7 11. Nxh7 d5 12. d3 Bf5 13. Bg5+ Kd7 14. Bxd8 Rxd8 15. Nxf8+ Kc7 16. Qg7 dxe4 17. Qxf7+ Kc8 18. Ne6 Rd7 19. Qf8+ Rd8 20. Qxd8# 1-0

[Event "BRA-ch U20"]
[Site "Concordia"]
[Date "2021.10.02"]
[Round "5"]
[White "Araujo, Lucas Santos"]
[Black "Eberhard, Gustavo Henrique"]
[Result "0-1"]
[ECO "D23"]
[BlackElo "1289"]
[PlyCount "72"]
[EventDate "2021.09.30"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. c4 c6 2. Nf3 d5 3. d3 dxc4 4. d4 Nf6 5. g3 c5 6. e3 Bg4 7. Bg2 e5 8. b3 e4 9. bxc4 Nc6 10. Ba3 Nb4 11. Nc3 Bxf3 12. Bxf3 exf3 13. Qxf3 Nc2+ 14. Kd2 Nxa1 15. Rxa1 cxd4 16. Ne4 Bxa3 17. Rd1 0-0 18. Nxf6+ Qxf6 19. Qxf6 gxf6 20. exd4 Rfd8 21. Kd3 Bc5 22. Kc2 Rxd4 23. f4 Rxd1 24. Kxd1 Re8 25. g4 Kg7 26. Kc2 Kg6 27. h3 f5 28. Kb3 Re3+ 29. Kc2 Rxh3 30. gxf5+ Kxf5 31. a4 Ke4 32. f5 Kd4 33. f6 Kxc4 34. a5 Rh2+ 35. Kd1 Kd3 36. a6 Rh1# 0-1

[Event "BRA-ch U20"]
[Site "Concordia"]
[Date "2021.10.01"]
[Round "2"]
[White "Araujo, Lucas Santos"]
[Black "Rodio, Arthur Brunetto"]
[Result "0-1"]
[ECO "A15"]
[BlackElo "1301"]
[PlyCount "88"]
[EventDate "2021.09.30"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. c4 Nf6 2. Nf3 g6 3. d3 Bg7 4. g3 0-0 5. Bg2 d6 6. h3 e5 7. e4 Be6 8. Nc3 Nc6 9. Bg5 h6 10. Be3 Nd7 11. Qd2 Kh7 12. h4 f5 13. exf5 Bxf5 14. Bh3 Bxh3 15. Rxh3 Rxf3 16. Nd5 Nf6 17. Qe2 Nxd5 18. cxd5 Nb4 19. Qd1 Rf8 20. Qb3 a5 21. a3 Qc8 22. Rh2 Na6 23. g4 Qxg4 24. Qc2 Qg1+ 25. Ke2 Qxh2 26. b4 e4 27. d4 Qxh4 28. Rg1 axb4 29. Qc1 Qh5+ 30. Kd2 Qxd5 31. Rh1 h5 32. Rh2 Bxd4 33. Bxd4 Qxd4+ 34. Ke2 Qd3+ 35. Ke1 Qc3+ 36. Kd1 Qxc1+ 37. Kxc1 bxa3 38. Kd2 a2 39. Rh1 Rxf2+ 40. Ke3 Nc5 41. Kxf2 a1Q 42. Rf1 Qb2+ 43. Kg1 Ra1 44. Kh1 Rxf1# 0-1

[Event "BRA-ch U20"]
[Site "Concordia"]
[Date "2021.10.01"]
[Round "3"]
[White "Kulkamp, Victor Silva"]
[Black "Araujo, Lucas Santos"]
[Result "1-0"]
[ECO "D30"]
[WhiteElo "1737"]
[PlyCount "95"]
[EventDate "2021.09.30"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. g3 b6 4. Nf3 Nc6 5. Bg2 Bb7 6. 0-0 f6 7. Qc2 e5 8. cxd5 Nce7 9. dxe5 Bxd5 10. Rd1 Ng6 11. e4 N8e7 12. exd5 Nxe5 13. Nxe5 fxe5 14. Bg5 h6 15. Bxe7 Bxe7 16. Qc6+ Kf8 17. Nc3 Rb8 18. Be4 Qd6 19. Nb5 Qxc6 20. dxc6 a6 21. Nxc7 Kf7 22. Rd7 Rhd8 23. Rad1 b5 24. Rxd8 Rxd8 25. Rxd8 Bxd8 26. Nxa6 g6 27. c7 Bxc7 28. Nxc7 Ke7 29. Nxb5 g5 30. a4 Kd7 31. Bb7 h5 32. a5 h4 33. a6 hxg3 34. a7 gxf2+ 35. Kxf2 g4 36. a8Q e4 37. Qc8+ Ke7 38. Ke3 g3 39. hxg3 Kf6 40. Bxe4 Ke7 41. Qc7+ Kf6 42. Qd6+ Kf7 43. Bd5+ Kg7 44. Qe7+ Kg6 45. Kf4 Kh6 46. Qf6+ Kh7 47. Qg5 Kh8 48. Qg8# 1-0

[Event "BRA-ch U20"]
[Site "Concordia"]
[Date "2021.09.30"]
[Round "1"]
[White "De Abreu, Vinicius Lindoso"]
[Black "Araujo, Lucas Santos"]
[Result "1-0"]
[ECO "D20"]
[WhiteElo "1634"]
[PlyCount "43"]
[EventDate "2021.09.30"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 d5 2. c4 Nf6 3. Nc3 dxc4 4. e4 Nc6 5. d5 Na5 6. Bxc4 Nxc4 7. Qa4+ Bd7 8. Qxc4 e6 9. Bg5 c6 10. dxc6 Bxc6 11. Nf3 h6 12. Bh4 g5 13. Bg3 Bd6 14. Rd1 Nh5 15. Bxd6 g4 16. Be5 Qc7 17. Bxc7 gxf3 18. Rd8+ Rxd8 19. Bxd8 fxg2 20. Rg1 Nf4 21. Qd4 f5 22. Qxh8+ 1-0

