[Event "Buenos Aires Najdorf U12/14"]
[Site "Buenos Aires"]
[Date "2004.10.08"]
[Round "6.57"]
[White "De Negri, Matias"]
[Black "Lamelza, Francisco"]
[Result "0-1"]
[ECO "C65"]
[PlyCount "32"]
[EventDate "2004.10.07"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "ARG"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 d6 4. Nc3 Nf6 5. 0-0 Be7 6. d3 h6 7. Nd5 0-0 8. Nxf6+ Bxf6 9. Be3 Bg4 10. d4 exd4 11. Bxd4 Nxd4 12. Bd3 Nxf3+ 13. gxf3 Bh3 14. Re1 Bxb2 15. Rb1 Bd4 16. Re2 Qg5+ 0-1

[Event "Buenos Aires Najdorf U12/14"]
[Site "Buenos Aires"]
[Date "2004.10.08"]
[Round "7.62"]
[White "Lagamba, Facundo"]
[Black "De Negri, Matias"]
[Result "1-0"]
[ECO "C50"]
[PlyCount "63"]
[EventDate "2004.10.07"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "ARG"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Qe7 4. Nc3 Nd4 5. d3 Nxf3+ 6. Qxf3 Nf6 7. Bg5 h6 8. Bxf6 gxf6 9. Nd5 Qd6 10. Nxf6+ Kd8 11. Nd5 c6 12. Qf6+ Qxf6 13. Nxf6 b5 14. Bb3 d5 15. exd5 cxd5 16. Nxd5 Rg8 17. Ne3 Bb7 18. Bxf7 Bxg2 19. Bxg8 Bxh1 20. Bd5 Bxd5 21. Nxd5 Rc8 22. Kd2 Rc5 23. Ne3 h5 24. Rg1 Bh6 25. Rg6 Bf4 26. h3 Bxe3+ 27. fxe3 b4 28. Rg5 a5 29. Rxh5 Ke7 30. d4 Rd5 31. Rxe5+ Rxe5 32. dxe5 1-0

[Event "Buenos Aires Najdorf U12/14"]
[Site "Buenos Aires"]
[Date "2004.10.08"]
[Round "5.66"]
[White "Porres, Alejandra"]
[Black "De Negri, Matias"]
[Result "0-1"]
[ECO "C23"]
[PlyCount "52"]
[EventDate "2004.10.07"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "ARG"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. e4 e5 2. Bc4 Qe7 3. Qh5 g6 4. Qg4 Nf6 5. Qe2 Nc6 6. Nc3 Nd4 7. Qd3 c5 8. Nb5 Qd8 9. Nd6+ Bxd6 10. c3 Nc2+ 11. Qxc2 Nxe4 12. Bb3 Nxf2 13. Kxf2 Qf6+ 14. Nf3 e4 15. Qxe4+ Be5 16. Qc4 b5 17. Qxf7+ Qxf7 18. Bxf7+ Kxf7 19. Nxe5+ Kf6 20. Ng4+ Kg5 21. h3 Rf8+ 22. Ke2 Re8+ 23. Ne3 d5 24. d3 d4 25. Rf1 c4 26. dxc4 bxc4 0-1

[Event "Buenos Aires Najdorf U12/14"]
[Site "Buenos Aires"]
[Date "2004.10.07"]
[Round "2.49"]
[White "De Negri, Matias"]
[Black "Otero, Fernando"]
[Result "0-1"]
[ECO "C20"]
[PlyCount "16"]
[EventDate "2004.10.07"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "ARG"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. e4 d5 2. d3 e5 3. Nf3 dxe4 4. Nxe5 exd3 5. cxd3 Bd6 6. Bf4 Qe7 7. Nc3 Bxe5 8. Nd5 Bc3# 0-1

[Event "Buenos Aires Najdorf U12/14"]
[Site "Buenos Aires"]
[Date "2004.10.07"]
[Round "1.54"]
[White "Rossi, Rodrigo"]
[Black "De Negri, Matias"]
[Result "1-0"]
[ECO "C55"]
[PlyCount "93"]
[EventDate "2004.10.07"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "ARG"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Nc3 Qe7 5. d3 g6 6. Bg5 Bg7 7. Nd5 Qd8 8. Nxf6+ Bxf6 9. Bxf6 Qxf6 10. 0-0 Nd4 11. Nxd4 exd4 12. Re1 d6 13. h3 Be6 14. Bb3 g5 15. Qe2 h5 16. Bxe6 Qxe6 17. e5 g4 18. exd6 Qxe2 19. Rxe2+ Kd7 20. Re7+ Kxd6 21. Rxf7 Raf8 22. Rxf8 Rxf8 23. hxg4 hxg4 24. Re1 Rf6 25. Re4 g3 26. Rxd4+ Kc5 27. Rc4+ Kb6 28. fxg3 c5 29. Rf4 Rg6 30. Kf2 a5 31. g4 Kb5 32. a4+ Kc6 33. Re4 Rf6+ 34. Kg3 b5 35. axb5+ Kxb5 36. b3 Rf1 37. d4 cxd4 38. Rxd4 Kc5 39. Rc4+ Kb5 40. g5 Rf8 41. Kg4 Rg8 42. Kf5 Rf8+ 43. Ke6 Re8+ 44. Kf7 Re2 45. g4 Rf2+ 46. Kg8 Rg2 47. g6 1-0

