[Event "Najdorf Festival op"]
[Site "Buenos Aires"]
[Date "1998.10.28"]
[Round "5"]
[White "Rivero, Federico"]
[Black "Marques, Vinicius de Abreu"]
[Result "1/2-1/2"]
[ECO "B25"]
[BlackElo "2235"]
[PlyCount "74"]
[EventDate "1998.10.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 e6 3. g3 Nc6 4. Bg2 g6 5. f4 d6 6. d3 Bg7 7. Nf3 Nge7 8. 0-0 0-0 9. Qe1 Rb8 10. g4 f5 11. exf5 gxf5 12. g5 d5 13. h4 d4 14. Nd1 Nb4 15. Qf2 b5 16. h5 c4 17. a3 Nbc6 18. Qg3 cxd3 19. cxd3 b4 20. Nh4 Rb6 21. Nf2 Qe8 22. Bf3 Bb7 23. Nh3 b3 24. Bd2 Nd8 25. Bd1 Bd5 26. Rc1 Rc6 27. Rxc6 Ndxc6 28. Re1 a5 29. Kf2 e5 30. Bf3 e4 31. dxe4 fxe4 32. Bxe4 Bxe4 33. Rxe4 Qxh5 34. Qxb3+ Kh8 35. Kg3 h6 36. Qe6 hxg5 37. Nf5 Bf6 1/2-1/2

[Event "Najdorf Festival op"]
[Site "Buenos Aires"]
[Date "1998.10.25"]
[Round "3"]
[White "Estay Torreblanca, Oscar"]
[Black "Rivero, Federico"]
[Result "0-1"]
[ECO "B35"]
[WhiteElo "2290"]
[PlyCount "76"]
[EventDate "1998.10.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. Bc4 0-0 8. Bb3 Ng4 9. Qxg4 Nxd4 10. Qd1 Nxb3 11. axb3 a6 12. Qd2 d6 13. Bh6 Be6 14. h4 Bxh6 15. Qxh6 f6 16. 0-0-0 Qb6 17. Qd2 h5 18. Qh6 Rf7 19. Qxg6+ Rg7 20. Qxh5 Qxf2 21. Rd2 Qf4 22. Qf3 Qe5 23. Nd5 Rc8 24. Kb1 Rc5 25. Ne3 Rg3 26. Qf2 Bxb3 27. Nf5 Rg6 28. h5 Rg5 29. Nd4 Bf7 30. h6 Ra5 31. h7+ Kh8 32. Nb3 Bxb3 33. Qb6 Rh5 34. Rxh5 Ba2+ 35. Kc1 Qxh5 36. Qd8+ Kxh7 37. Rd3 Qh1+ 38. Kd2 Qxg2+ 0-1

[Event "Najdorf Festival op"]
[Site "Buenos Aires"]
[Date "1998.10.24"]
[Round "1"]
[White "Rivero, Federico"]
[Black "Pelikian, Jefferson"]
[Result "0-1"]
[ECO "B25"]
[BlackElo "2415"]
[PlyCount "43"]
[EventDate "1998.10.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. f4 d6 6. Nf3 Rb8 7. 0-0 b5 8. d3 b4 9. Nd5 e6 10. Ne3 Nge7 11. f5 exf5 12. Ng5 Ne5 13. exf5 Nxf5 14. Nd5 0-0 15. Ne4 f6 16. Bf4 Be6 17. Ne3 Nxe3 18. Bxe3 h6 19. d4 Nc4 20. Qe1 f5 21. Nf2 Re8 22. b3 0-1

[Event "Villa Ballester op 48th"]
[Site "Villa Ballester"]
[Date "1998.??.??"]
[Round "1"]
[White "Anelli, Antonio"]
[Black "Rivero, Federico"]
[Result "1-0"]
[ECO "A87"]
[WhiteElo "2320"]
[PlyCount "43"]
[EventDate "1998.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. c4 f5 2. g3 Nf6 3. Bg2 g6 4. b3 Bg7 5. Bb2 0-0 6. Nf3 d6 7. d4 c5 8. 0-0 cxd4 9. Nxd4 d5 10. cxd5 Nxd5 11. e3 e5 12. Nxf5 gxf5 13. Qxd5+ Kh8 14. Bxe5 Qxd5 15. Bxg7+ Kxg7 16. Bxd5 Nc6 17. Nc3 Nb4 18. Bg2 Rf7 19. Nd5 Nd3 20. Rfd1 Ne5 21. Rac1 Be6 22. Nc7 1-0

[Event "Villa Ballester op 48th"]
[Site "Villa Ballester"]
[Date "1998.??.??"]
[Round "4"]
[White "Araguas, Claudio"]
[Black "Rivero, Federico"]
[Result "0-1"]
[ECO "A85"]
[PlyCount "40"]
[EventDate "1998.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 f5 2. c4 Nf6 3. Nc3 g6 4. Qc2 Bg7 5. e4 fxe4 6. Nxe4 0-0 7. Nf3 d6 8. Bd2 Nc6 9. d5 Nxe4 10. Qxe4 Bf5 11. Qe3 Bxb2 12. Bc3 Bxc3+ 13. Qxc3 Nb8 14. Nd4 e5 15. dxe6 Qf6 16. Qe3 Nc6 17. 0-0-0 Nxd4 18. Qxd4 Bxe6 19. f3 Qg5+ 20. Kb1 Rf4 0-1

[Event "Villa Ballester op 48th"]
[Site "Villa Ballester"]
[Date "1998.??.??"]
[Round "3"]
[White "Lopez, Leandro"]
[Black "Rivero, Federico"]
[Result "1-0"]
[ECO "A89"]
[PlyCount "99"]
[EventDate "1998.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 f5 2. g3 Nf6 3. Bg2 g6 4. Nf3 Bg7 5. 0-0 0-0 6. c4 d6 7. Nc3 Nc6 8. d5 Na5 9. Nd2 c5 10. a3 b6 11. Qc2 Nh5 12. b4 Nb7 13. Nb3 f4 14. Ra2 Bf5 15. Be4 Bh3 16. Rd1 Qc8 17. Qd3 Nf6 18. Bxf4 Nxe4 19. Nxe4 cxb4 20. axb4 a5 21. c5 a4 22. Nd4 Bxd4 23. Qxd4 bxc5 24. bxc5 dxc5 25. Qc3 Rxf4 26. gxf4 Qf5 27. Ng5 Qg4+ 28. Qg3 Qxg3+ 29. fxg3 Bg4 30. h3 Bd7 31. Rc1 h6 32. Ne4 Rc8 33. h4 Kf7 34. Nc3 Ra8 35. Rca1 Na5 36. Nxa4 Nb3 37. Nb6 Rxa2 38. Rxa2 Bb5 39. e3 Bd3 40. Na4 c4 41. Kf2 Kf6 42. Nc3 Nc5 43. Kf3 e5 44. e4 exf4 45. gxf4 g5 46. hxg5+ hxg5 47. fxg5+ Kxg5 48. d6 Kf6 49. Ra5 Nb3 50. Rd5 1-0

[Event "Villa Ballester op 48th"]
[Site "Villa Ballester"]
[Date "1998.??.??"]
[Round "7"]
[White "Recoulat, Eduardo Juan"]
[Black "Rivero, Federico"]
[Result "0-1"]
[ECO "A89"]
[WhiteElo "2175"]
[PlyCount "48"]
[EventDate "1998.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 f5 2. c4 Nf6 3. Nc3 g6 4. Nf3 Bg7 5. g3 0-0 6. Bg2 d6 7. 0-0 Nc6 8. d5 Na5 9. Nd2 c5 10. Qc2 e5 11. b3 Qe8 12. Bb2 b6 13. a3 Bd7 14. b4 Nb7 15. b5 g5 16. e3 Qh5 17. Qd1 Qh6 18. Qe2 Rae8 19. f3 g4 20. f4 exf4 21. gxf4 g3 22. h3 Ng4 23. Rf3 Nxe3 24. Rxe3 Rxe3 0-1

[Event "Villa Ballester op 48th"]
[Site "Villa Ballester"]
[Date "1998.??.??"]
[Round "6"]
[White "Rivero, Federico"]
[Black "Argiz, Gerardo"]
[Result "1-0"]
[ECO "C55"]
[PlyCount "115"]
[EventDate "1998.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Bc4 Nc6 4. d3 Be7 5. 0-0 0-0 6. c3 d5 7. exd5 Nxd5 8. Re1 Bf6 9. Nbd2 Na5 10. Nxe5 Nxc4 11. Ndxc4 Bxe5 12. Nxe5 f6 13. Nc4 Re8 14. Be3 Bf5 15. d4 Qd7 16. Nd2 Bg4 17. Qb3 c6 18. Nf1 Re7 19. h3 Bh5 20. Qc2 Rae8 21. Qd2 Qe6 22. c4 Nb6 23. b3 f5 24. d5 cxd5 25. Bxb6 Qxb6 26. Qxd5+ Bf7 27. Rxe7 Rxe7 28. Qxf5 Qd4 29. Rc1 Re2 30. Ne3 g6 31. Qc8+ Kg7 32. Rf1 b6 33. a3 Qb2 34. Qg4 h5 35. Qg5 Rd2 36. Nf5+ Kg8 37. Nh6+ Kg7 38. Nxf7 Kxf7 39. Qf4+ Kg7 40. Re1 Re2 41. Rxe2 Qxe2 42. Qe3 Qd1+ 43. Kh2 Qd6+ 44. g3 Qxa3 45. h4 Qd6 46. Qc3+ Kh7 47. b4 Qf8 48. Kg1 Qd6 49. c5 bxc5 50. bxc5 Qc6 51. Qd4 a5 52. Qd6 Qe4 53. c6 Qe1+ 54. Kg2 Qe4+ 55. Kh2 Qe2 56. Qf4 Qc2 57. Qf7+ Kh6 58. c7 1-0

[Event "Villa Ballester op 48th"]
[Site "Villa Ballester"]
[Date "1998.??.??"]
[Round "2"]
[White "Rivero, Federico"]
[Black "Decuzzi, Cesar Gustavo"]
[Result "1-0"]
[ECO "B23"]
[PlyCount "59"]
[EventDate "1998.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. f4 d6 4. Bc4 e6 5. d3 g6 6. Nf3 Bg7 7. 0-0 a6 8. f5 Nf6 9. Qe1 0-0 10. Bb3 Re8 11. Qh4 Nh5 12. Bg5 Bf6 13. g4 Bxg5 14. Nxg5 h6 15. f6 hxg5 16. Qxg5 Nxf6 17. Rxf6 Re7 18. h4 Qf8 19. h5 Ne5 20. Kg2 Qg7 21. h6 Qh7 22. Qh4 Kf8 23. g5 Ke8 24. Qf4 Nd7 25. Rf1 Nxf6 26. Qxf6 Kf8 27. e5 d5 28. Bxd5 exd5 29. Nxd5 Bh3+ 30. Kxh3 1-0

[Event "Villa Ballester op 48th"]
[Site "Villa Ballester"]
[Date "1998.??.??"]
[Round "8"]
[White "Rivero, Federico"]
[Black "Niegovich, Jorge"]
[Result "0-1"]
[ECO "B23"]
[BlackElo "2190"]
[PlyCount "62"]
[EventDate "1998.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 e6 3. g3 d5 4. Bg2 d4 5. Nce2 Nc6 6. d3 e5 7. f4 Bd6 8. Nf3 Bg4 9. 0-0 Qd7 10. c3 Nge7 11. f5 Bxf3 12. Bxf3 0-0-0 13. cxd4 cxd4 14. Bd2 Kb8 15. Qa4 f6 16. Rab1 Nb4 17. Qb3 Na6 18. Rfc1 Nc5 19. Qc4 Rc8 20. Qf7 Rcf8 21. Qxg7 Nxd3 22. Rd1 Qa4 23. Bh6 Qxa2 24. Nc1 Nxc1 25. Rdxc1 Rhg8 26. Qxh7 Rf7 27. Bg7 Rfxg7 28. Qh4 Rg5 29. g4 Qb3 30. Qg3 Nc6 31. h4 Rxg4 0-1

[Event "Villa Ballester op 48th"]
[Site "Villa Ballester"]
[Date "1998.??.??"]
[Round "5"]
[White "Rivero, Federico"]
[Black "Sanchez, Fernando"]
[Result "1/2-1/2"]
[ECO "B84"]
[BlackElo "2255"]
[PlyCount "59"]
[EventDate "1998.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 Be7 7. 0-0 a6 8. Be3 0-0 9. f4 Qc7 10. Qe1 Nbd7 11. Qg3 Re8 12. Nf3 Nc5 13. Bd3 d5 14. exd5 Nxd3 15. cxd3 exd5 16. Rac1 Bc5 17. Nxd5 Bxe3+ 18. Nxe3 Qb6 19. Ne5 Nd5 20. Rce1 Bf5 21. N5c4 Qd4 22. Kh1 Bxd3 23. Nxd5 Bxf1 24. Ncb6 Bb5 25. Nxa8 Qxd5 26. Nc7 Rxe1+ 27. Qxe1 Qd7 28. Nxb5 Qxb5 29. h3 g6 30. Qd2 1/2-1/2

[Event "Villa Ballester op 48th"]
[Site "Villa Ballester"]
[Date "1998.??.??"]
[Round "9"]
[White "Scalise, Luis"]
[Black "Rivero, Federico"]
[Result "1/2-1/2"]
[ECO "A02"]
[WhiteElo "2145"]
[PlyCount "115"]
[EventDate "1998.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. f4 b6 2. Nf3 Bb7 3. e3 c5 4. Be2 Nf6 5. d3 d5 6. 0-0 e6 7. Qe1 Nc6 8. Nbd2 Qc7 9. Nh4 h6 10. Ndf3 Bd6 11. g3 Nb4 12. Bd1 c4 13. a3 Nc6 14. Bd2 Ba6 15. Be2 Bc5 16. d4 Be7 17. Bb4 Ne4 18. Bxe7 Nxe7 19. Ne5 Nf5 20. Ng2 h5 21. Qb4 Qd6 22. Qxd6 Nfxd6 23. c3 Bb7 24. Bd1 Ke7 25. Bc2 Rag8 26. Bxe4 Nxe4 27. f5 exf5 28. Rxf5 f6 29. Ng6+ Ke6 30. N2h4 Rh6 31. Nf4+ Kf7 32. Rxd5 Bxd5 33. Nxd5 g6 34. a4 Rd8 35. Nc7 Rd7 36. Nb5 Ke6 37. Na3 g5 38. Nf3 h4 39. g4 Kd5 40. Nc2 a5 41. Na3 Rhh7 42. Rf1 Rhe7 43. Ne1 Nd6 44. Nec2 Re6 45. Kf2 f5 46. gxf5 Rf7 47. Ke2 Rxf5 48. Rxf5+ Nxf5 49. Kf3 Re4 50. h3 Nd6 51. Nb1 Nf7 52. Nd2 g4+ 53. hxg4 Ng5+ 54. Ke2 Rxg4 55. e4+ Ke6 56. Ne3 Rf4 57. Ng2 Rg4 58. Ne3 1/2-1/2

