[Event "BRA-ch U12"]
[Site "Rio de Janeiro"]
[Date "2012.05.13"]
[Round "6"]
[White "Badolato, Bruno Costa"]
[Black "As, Jonatas Kosienczuk"]
[Result "0-1"]
[ECO "C48"]
[BlackElo "1840"]
[PlyCount "94"]
[EventDate "2012.05.11"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 148 Extra"]
[Source "ChessBase"]
[SourceDate "2012.06.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.06.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 a6 5. Bxc6 dxc6 6. d3 Bb4 7. Bd2 Bxc3 8. Bxc3 Bg4 9. Bxe5 Nd7 10. Bxg7 Rg8 11. Bd4 Bxf3 12. Qxf3 c5 13. Be3 Ne5 14. Qf5 Ng6 15. 0-0-0 b6 16. Rhe1 Rg7 17. e5 Ne7 18. Qf6 Rg6 19. Qh8+ Rg8 20. Qxh7 Qd5 21. Qe4 Rxg2 22. Qxd5 Nxd5 23. h4 Nxe3 24. Rxe3 Rxf2 25. Rd2 Rf1+ 26. Re1 Rxe1+ 27. Rd1 Rxe5 28. b3 0-0-0 29. a3 Rh8 30. d4 cxd4 31. Rxd4 Re1+ 32. Rd1 Rxd1+ 33. Kxd1 Rxh4 34. a4 b5 35. a5 f5 36. c3 b4 37. c4 f4 38. Ke2 Rh3 39. Ke1 Rh2 40. c5 Rb2 41. c6 Rxb3 42. Kf2 Ra3 43. Kg2 b3 44. Kf3 b2+ 45. Ke2 b1Q 46. Kd2 Qb2+ 47. Kd1 Ra1# 0-1

[Event "BRA-ch U12"]
[Site "Rio de Janeiro"]
[Date "2012.05.12"]
[Round "4"]
[White "As, Jonatas Kosienczuk"]
[Black "Mendonca, Rafael Silva"]
[Result "0-1"]
[ECO "C44"]
[WhiteElo "1840"]
[PlyCount "32"]
[EventDate "2012.05.11"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 148 Extra"]
[Source "ChessBase"]
[SourceDate "2012.06.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.06.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 f5 4. Bg5 Be7 5. Bxe7 Ngxe7 6. exf5 Nxf5 7. Nxe5 Qe7 8. Be2 Nxe5 9. dxe5 Qxe5 10. Nc3 0-0 11. 0-0 b6 12. Bf3 Rb8 13. Re1 Qf6 14. Bg4 Nh4 15. Nd5 Qxf2+ 16. Kh1 Qxg2# 0-1

[Event "BRA-ch U12"]
[Site "Rio de Janeiro"]
[Date "2012.05.12"]
[Round "5"]
[White "Da Silva, Victor Rocha Rodrig"]
[Black "As, Jonatas Kosienczuk"]
[Result "0-1"]
[ECO "C47"]
[BlackElo "1840"]
[PlyCount "58"]
[EventDate "2012.05.11"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 148 Extra"]
[Source "ChessBase"]
[SourceDate "2012.06.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.06.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. d3 Be7 5. Be3 0-0 6. Qd2 Bb4 7. a3 Bxc3 8. bxc3 Ng4 9. Bc5 d6 10. h3 dxc5 11. hxg4 Bxg4 12. Qg5 Bxf3 13. Qxd8 Raxd8 14. gxf3 h6 15. Bh3 Rd6 16. Bf5 Ne7 17. Bg4 f5 18. exf5 Nxf5 19. Ke2 g6 20. Rad1 h5 21. Bh3 Nh4 22. Rb1 b6 23. Ke3 Rxf3+ 24. Ke4 Rxh3 25. Kxe5 Nf3+ 26. Kf4 Rf6+ 27. Ke3 Nd4+ 28. Kd2 Rxf2+ 29. Kc1 Rxc2+ 0-1

[Event "BRA-ch U12"]
[Site "Rio de Janeiro"]
[Date "2012.05.12"]
[Round "3"]
[White "Silveira, Lorensen Willer Soa"]
[Black "As, Jonatas Kosienczuk"]
[Result "1-0"]
[ECO "C55"]
[WhiteElo "1763"]
[BlackElo "1840"]
[PlyCount "57"]
[EventDate "2012.05.11"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 148 Extra"]
[Source "ChessBase"]
[SourceDate "2012.06.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.06.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Bb4 4. a3 Bxc3 5. dxc3 Nf6 6. Bc4 Nxe4 7. Qd5 Nd6 8. Nxe5 Qe7 9. 0-0 0-0 10. Nxc6 bxc6 11. Qf3 Nxc4 12. Qg4 Re8 13. Qxc4 d5 14. Qd3 g6 15. Qf3 Qe1 16. Be3 Rxe3 17. fxe3 Bg4 18. Qxf7+ Kh8 19. Raxe1 Bf5 20. Qxc7 Bxc2 21. Qxc6 Rd8 22. Qf6+ Kg8 23. Qxd8+ Kg7 24. Qf6+ Kh6 25. h4 Bd3 26. Qg5+ Kg7 27. Qe7+ Kh6 28. Rf7 Kh5 29. Qg5# 1-0

[Event "BRA-ch U12"]
[Site "Rio de Janeiro"]
[Date "2012.05.11"]
[Round "2"]
[White "As, Jonatas Kosienczuk"]
[Black "Carstens Dobuchak, Thiago"]
[Result "0-1"]
[ECO "B21"]
[WhiteElo "1840"]
[BlackElo "1771"]
[PlyCount "50"]
[EventDate "2012.05.11"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 148 Extra"]
[Source "ChessBase"]
[SourceDate "2012.06.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.06.22"]
[SourceQuality "1"]

1. e4 c5 2. d4 cxd4 3. Qxd4 Nc6 4. Qa4 Nf6 5. Bd3 e6 6. Nc3 Be7 7. Bb5 0-0 8. Bxc6 bxc6 9. e5 Nd5 10. Nxd5 cxd5 11. Qg4 Re8 12. Nf3 Ba6 13. Ng5 Qc7 14. Qh4 Qxe5+ 15. Be3 Bxg5 16. Qxg5 Qxb2 17. Kd2 Qb4+ 18. Kc1 Rec8 19. Rb1 Qc3 20. Rb2 Rab8 21. Bd2 Qxb2+ 22. Kd1 Qxc2+ 23. Ke1 Rb1+ 24. Bc1 Rxc1+ 25. Qxc1 Qxc1# 0-1

[Event "BRA-ch U12"]
[Site "Rio de Janeiro"]
[Date "2012.05.11"]
[Round "1"]
[White "As, Jonatas Kosienczuk"]
[Black "Junior, Antonio Alberto de"]
[Result "1-0"]
[ECO "B21"]
[WhiteElo "1840"]
[PlyCount "61"]
[EventDate "2012.05.11"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "BRA"]
[SourceTitle "CBM 148 Extra"]
[Source "ChessBase"]
[SourceDate "2012.06.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.06.22"]
[SourceQuality "1"]

1. e4 c5 2. d4 cxd4 3. Qxd4 Qa5+ 4. Bd2 e5 5. Bxa5 exd4 6. Nf3 Bb4+ 7. Bxb4 a5 8. Bc5 Ra6 9. Bxa6 bxa6 10. Bxd4 h5 11. Bxg7 Rh6 12. Bxh6 Nxh6 13. 0-0 Nc6 14. Nc3 Nb4 15. Nd4 Nxc2 16. Nxc2 Bb7 17. h3 Bxe4 18. Nxe4 Nf5 19. Rfe1 Nh4 20. Nc5+ Kd8 21. Nxa6 Nxg2 22. Kxg2 h4 23. Rad1 d5 24. Rxd5+ Kc8 25. Re8+ Kb7 26. Nc5+ Kc6 27. Ne3 Kc7 28. Re7+ Kc6 29. Rxf7 Kb5 30. Nb3+ Ka4 31. Rf4# 1-0

