[Event "Sao Paulo Xeque U12"]
[Site "Sao Paulo"]
[Date "2025.04.06"]
[Round "4"]
[White "Yamamoto, Pedro Machado"]
[Black "Helman, Marcelo Becker Mau"]
[Result "0-1"]
[ECO "C54"]
[WhiteElo "1785"]
[PlyCount "104"]
[EventDate "2025.04.05"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "BRA"]
[SourceTitle "CB15_2025"]
[SourceDate "2025.04.09"]
[SourceVersion "1"]
[SourceVersionDate "2025.04.09"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. cxd4 Bb4+ 7. Bd2 Bxd2+ 8. Nbxd2 0-0 9. e5 Re8 10. 0-0 Ng4 11. h3 Nh6 12. Ne4 d5 13. exd6 Rxe4 14. Qd3 Bf5 15. dxc7 Qxc7 16. Ng5 Rxd4 17. Qc3 Rad8 18. Nf3 R4d7 19. Rfe1 Re7 20. Rad1 Rxd1 21. Rxd1 Bg6 22. Bb5 Re8 23. Nd4 Rd8 24. Re1 Kh8 25. Bxc6 bxc6 26. Nxc6 Rc8 27. Rc1 Be4 28. b4 Qxc6 29. Qxc6 Rxc6 30. Re1 f5 31. f3 Bd5 32. a4 g5 33. Re8+ Kg7 34. Re7+ Kg6 35. Rxa7 Nf7 36. b5 Rc1+ 37. Kh2 Ra1 38. b6 Nd6 39. a5 Ra2 40. Ra6 Kh5 41. Ra7 h6 42. a6 Bxf3 43. Kg1 Rxg2+ 44. Kf1 Ra2 45. Ke1 Kh4 46. Ra8 h5 47. Kf1 Kxh3 48. a7 Bxa8 49. Kg1 f4 50. Kf1 f3 51. Kg1 f2+ 52. Kf1 Bg2# 0-1

[Event "Sao Paulo Xeque U12"]
[Site "Sao Paulo"]
[Date "2025.04.06"]
[Round "5"]
[White "Yamamoto, Pedro Machado"]
[Black "Young, Raymond Aoning"]
[Result "1-0"]
[ECO "C42"]
[WhiteElo "1785"]
[BlackElo "1822"]
[PlyCount "59"]
[EventDate "2025.04.05"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "BRA"]
[SourceTitle "CB15_2025"]
[SourceDate "2025.04.09"]
[SourceVersion "1"]
[SourceVersionDate "2025.04.09"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. Qe2 Qe7 6. d3 Nf6 7. Qxe7+ Bxe7 8. Be2 0-0 9. Nc3 Nc6 10. Bf4 Bf5 11. 0-0-0 a6 12. h3 h6 13. g4 Bh7 14. g5 hxg5 15. Nxg5 Bg6 16. h4 Bh5 17. Rdg1 g6 18. Bxh5 Nxh5 19. Be3 b5 20. Nge4 Ne5 21. Nd5 Bd8 22. Bh6 Re8 23. Bg5 Bxg5+ 24. hxg5 Rec8 25. Ne7+ Kg7 26. Nxc8 Rxc8 27. Ng3 Nxg3 28. Rxg3 f5 29. Rgh3 Ng4 30. Rh7+ 1-0

[Event "Sao Paulo Xeque U12"]
[Site "Sao Paulo"]
[Date "2025.04.05"]
[Round "3"]
[White "Cunha, Thiago Dias de Sant"]
[Black "Yamamoto, Pedro Machado"]
[Result "0-1"]
[ECO "C50"]
[BlackElo "1785"]
[PlyCount "70"]
[EventDate "2025.04.05"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "BRA"]
[SourceTitle "CB15_2025"]
[SourceDate "2025.04.09"]
[SourceVersion "1"]
[SourceVersionDate "2025.04.09"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. 0-0 Nf6 5. d3 d6 6. Nc3 Bg4 7. h3 Bh5 8. Qe1 Bxf3 9. Bg5 h6 10. Bh4 g5 11. Bg3 Bxg2 12. Kxg2 Qd7 13. Nd5 Nh5 14. Qe2 Nxg3 15. Kxg3 0-0-0 16. Kg2 Nd4 17. Qg4 f5 18. Qh5 Nxc2 19. Rac1 Nd4 20. Nf6 Qg7 21. Be6+ Nxe6 22. Nd5 Nf4+ 23. Nxf4 gxf4+ 24. Kf3 fxe4+ 25. Kxe4 d5+ 26. Kf3 e4+ 27. Ke2 exd3+ 28. Kxd3 Qd4+ 29. Kc2 Rde8 30. Kb1 Re6 31. Qf5 Rhe8 32. f3 Kb8 33. a3 Bxa3 34. bxa3 Rb6+ 35. Ka2 Qb2# 0-1

[Event "Sao Paulo Xeque U12"]
[Site "Sao Paulo"]
[Date "2025.04.05"]
[Round "1"]
[White "Paniza, Guillame Vittorio"]
[Black "Yamamoto, Pedro Machado"]
[Result "1-0"]
[ECO "C44"]
[BlackElo "1785"]
[PlyCount "87"]
[EventDate "2025.04.05"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "BRA"]
[SourceTitle "CB15_2025"]
[SourceDate "2025.04.09"]
[SourceVersion "1"]
[SourceVersionDate "2025.04.09"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bd3 Bc5 4. Nc3 Nf6 5. 0-0 d6 6. Bb5 0-0 7. Bxc6 bxc6 8. h3 d5 9. d3 h6 10. Nxe5 Qd6 11. Bf4 Qe6 12. d4 Bd6 13. exd5 cxd5 14. Re1 Bxe5 15. Bxe5 Qb6 16. Bxf6 Qxf6 17. Nxd5 Qc6 18. Ne7+ Kh8 19. Nxc6 Bb7 20. d5 Rac8 21. Nxa7 Rcd8 22. c4 Rd6 23. Nb5 Rd7 24. Qd3 c6 25. Nc3 Rfd8 26. Re2 cxd5 27. Rae1 g6 28. Re8+ Kh7 29. Rxd8 Rxd8 30. cxd5 Rd6 31. Re5 Ba6 32. Nb5 Kg7 33. Qa3 Rb6 34. Nc7 Bc4 35. d6 Kf6 36. Qc5 Rxb2 37. d7 Rd2 38. Nd5+ Kxe5 39. d8Q Rxd5 40. Qde7+ Kf5 41. Qxf7+ Ke5 42. Qxc4 Rd1+ 43. Kh2 Rd4 44. Qce6# 1-0

[Event "Sao Paulo Xeque U12"]
[Site "Sao Paulo"]
[Date "2025.04.05"]
[Round "2"]
[White "Yamamoto, Pedro Machado"]
[Black "Hazzan, Andre Terepins"]
[Result "1-0"]
[ECO "C42"]
[WhiteElo "1785"]
[PlyCount "29"]
[EventDate "2025.04.05"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "BRA"]
[SourceTitle "CB15_2025"]
[SourceDate "2025.04.09"]
[SourceVersion "1"]
[SourceVersionDate "2025.04.09"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 Nc6 4. Nxc6 bxc6 5. Nc3 d5 6. Bd3 Nxe4 7. Nxe4 dxe4 8. Bxe4 f6 9. Bxc6+ Bd7 10. Bxa8 Qxa8 11. 0-0 a6 12. Re1+ Be6 13. Rxe6+ Kf7 14. Qe2 Bb4 15. Qc4 1-0

