[Event "Wch U16 11th"]
[Site "Guarapuava"]
[Date "1991.07.??"]
[Round "4"]
[White "De Souza Mendes, X."]
[Black "Rivadavia, Esteban"]
[Result "0-1"]
[ECO "C65"]
[PlyCount "62"]
[EventDate "1991.07.16"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 d6 4. Nc3 Nf6 5. d3 Be7 6. Nd5 Bd7 7. Nxe7 Qxe7 8. Bg5 h6 9. Bxf6 Qxf6 10. Bxc6 Bxc6 11. Qe2 0-0-0 12. 0-0-0 Qe6 13. Kb1 f5 14. b3 g5 15. h3 Rdf8 16. g3 fxe4 17. dxe4 Qf6 18. Nh2 Qxf2 19. Qxf2 Rxf2 20. Rde1 h5 21. g4 Rf4 22. Rhf1 hxg4 23. Rxf4 gxf4 24. Nxg4 Rxh3 25. Nf6 b6 26. Rg1 Re3 27. Rg8+ Kb7 28. a4 Bxe4 29. Nd7 Rxb3+ 30. Ka2 Bxc2 31. Rb8+ Kc6 0-1

[Event "Wch U16 11th"]
[Site "Guarapuava"]
[Date "1991.07.??"]
[Round "2"]
[White "De la Riva Aguado, Jorge"]
[Black "Rivadavia, Esteban"]
[Result "1-0"]
[ECO "C84"]
[PlyCount "69"]
[EventDate "1991.07.16"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 d6 4. 0-0 Bd7 5. c3 Nf6 6. Re1 Be7 7. d3 0-0 8. Nbd2 a6 9. Ba4 b5 10. Bb3 Bg4 11. Nf1 Nd7 12. Bd5 Ndb8 13. a4 Ra7 14. h3 Bxf3 15. Qxf3 Bg5 16. Be3 Bxe3 17. Nxe3 Ne7 18. axb5 c6 19. bxc6 Nbxc6 20. Bc4 a5 21. Ra2 Qd7 22. Rea1 Kh8 23. Bd5 f6 24. Nc4 Qc7 25. Ne3 g6 26. h4 Qd7 27. h5 Kg7 28. Qg3 Nxd5 29. exd5 Ne7 30. Rxa5 Rfa8 31. Rxa7 Rxa7 32. Re1 Nf5 33. Qh3 Nxe3 34. Qxe3 Qf5 35. Qxa7+ 1-0

[Event "Wch U16 11th"]
[Site "Guarapuava"]
[Date "1991.07.??"]
[Round "6"]
[White "Doornbos, Yann"]
[Black "Rivadavia, Esteban"]
[Result "1-0"]
[ECO "C66"]
[PlyCount "81"]
[EventDate "1991.07.16"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 d6 4. d4 exd4 5. Nxd4 Bd7 6. Nc3 Nf6 7. 0-0 Be7 8. Bxc6 Bxc6 9. Nxc6 bxc6 10. Qf3 0-0 11. e5 Nd7 12. exd6 Ne5 13. Qe4 cxd6 14. f4 f5 15. Qd4 Nd7 16. Qc4+ Kh8 17. Qxc6 Nf6 18. Qf3 Qc7 19. Kh1 Rad8 20. Be3 Rd7 21. Rfd1 Rfd8 22. Bd4 Qa5 23. Qd3 g6 24. Nd5 Rf8 25. Nxe7 Rxe7 26. Bc3 Qb6 27. Qxd6 Ref7 28. Qxb6 axb6 29. Rd6 Kg8 30. Rxb6 Ne4 31. Be5 Rd7 32. a4 Nd2 33. a5 Nc4 34. Rb8 Rxb8 35. Bxb8 Nxa5 36. Kg1 Nc6 37. Be5 Rd2 38. Rc1 Kf7 39. Bc3 Rd5 40. Kf2 Nd4 41. Rd1 1-0

[Event "Wch U16 11th"]
[Site "Guarapuava"]
[Date "1991.07.??"]
[Round "8"]
[White "Faria, Cassio Henrique D"]
[Black "Rivadavia, Esteban"]
[Result "1-0"]
[ECO "C45"]
[PlyCount "53"]
[EventDate "1991.07.16"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Nf6 5. Nxc6 bxc6 6. e5 Nd5 7. c4 Nb6 8. Nd2 d6 9. exd6 cxd6 10. g3 Be6 11. Bg2 d5 12. 0-0 Be7 13. cxd5 cxd5 14. Nf3 0-0 15. Nd4 Bc5 16. b3 Qd7 17. Bb2 Rac8 18. Qd2 a6 19. Rad1 Qa7 20. Kh1 Rc7 21. f4 Bg4 22. Rc1 Na8 23. f5 f6 24. Qf4 Bh5 25. Ne6 Be3 26. Rxc7 Nxc7 27. Qxc7 1-0

[Event "Wch U16 11th"]
[Site "Guarapuava"]
[Date "1991.07.??"]
[Round "1"]
[White "Rivadavia, Esteban"]
[Black "Almasi, Zoltan"]
[Result "0-1"]
[ECO "C47"]
[BlackElo "2340"]
[PlyCount "38"]
[EventDate "1991.07.16"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Nf6 5. Nc3 Bb4 6. Nxc6 bxc6 7. Bd3 d5 8. 0-0 0-0 9. e5 Ng4 10. Bf4 f6 11. Re1 Bc5 12. Kf1 fxe5 13. g3 exf4 14. Re2 fxg3 15. hxg3 Nxf2 16. Rxf2 Rxf2+ 17. Ke1 Qe7+ 18. Ne2 Bg4 19. c3 Re8 0-1

[Event "Wch U16 11th"]
[Site "Guarapuava"]
[Date "1991.07.??"]
[Round "10"]
[White "Rivadavia, Esteban"]
[Black "Amalio, N."]
[Result "0-1"]
[ECO "B19"]
[PlyCount "64"]
[EventDate "1991.07.16"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. h4 h6 7. Nf3 Nd7 8. h5 Bh7 9. Bd3 Bxd3 10. Qxd3 Qc7 11. Bd2 e6 12. Qe2 Ngf6 13. 0-0-0 0-0-0 14. Ne5 Nxe5 15. dxe5 Nd5 16. c4 Nb6 17. Ba5 Be7 18. Rhe1 c5 19. Qe4 Kb8 20. Kb1 Rd7 21. Rxd7 Qxd7 22. Qg4 Qd3+ 23. Ka1 Rd8 24. a3 Bf8 25. Qe4 Qb3 26. Bxb6 axb6 27. Qf4 Rd7 28. Rc1 Kc7 29. Ne2 Be7 30. Qe3 Rd3 31. Qf4 Bg5 32. Qxf7+ Rd7 0-1

[Event "Wch U16 11th"]
[Site "Guarapuava"]
[Date "1991.07.??"]
[Round "7"]
[White "Rivadavia, Esteban"]
[Black "Clay Bejar, Robert"]
[Result "0-1"]
[ECO "C01"]
[PlyCount "78"]
[EventDate "1991.07.16"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. c4 Nf6 5. Nc3 Nc6 6. Nf3 Bg4 7. Be3 g6 8. Be2 Bg7 9. Qb3 dxc4 10. Qxb7 Na5 11. Qb5+ c6 12. Qa4 0-0 13. Ne5 Bxe2 14. Nxe2 Qb6 15. Nxc4 Nxc4 16. Qxc4 Qxb2 17. 0-0 Qb5 18. Rfc1 Nd5 19. Qxc6 Qxc6 20. Rxc6 Rfe8 21. Rd1 Nxe3 22. fxe3 Rxe3 23. Kf2 Rae8 24. Ng3 h5 25. Rc2 h4 26. Nf1 R3e4 27. d5 Bd4+ 28. Kf3 g5 29. g3 h3 30. g4 Bb6 31. d6 Re3+ 32. Nxe3 Rxe3+ 33. Kf2 Rc3+ 34. Kf1 Rxc2 35. d7 Rxh2 36. d8Q+ Bxd8 37. Rxd8+ Kg7 38. a4 Ra2 39. Rd4 h2 0-1

[Event "Wch U16 11th"]
[Site "Guarapuava"]
[Date "1991.07.??"]
[Round "5"]
[White "Rivadavia, Esteban"]
[Black "Nedilsky, Diego"]
[Result "0-1"]
[ECO "B34"]
[BlackElo "2245"]
[PlyCount "54"]
[EventDate "1991.07.16"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. Nxc6 bxc6 8. e5 Ng8 9. f4 f5 10. Bc4 e6 11. Qd2 Ne7 12. 0-0-0 Qa5 13. Bd4 Rb8 14. Ne4 Qxd2+ 15. Nxd2 a5 16. Nf3 Nd5 17. g3 Bb7 18. Rhf1 0-0 19. Rd2 Rfc8 20. a3 Bf8 21. Bg1 c5 22. Be2 c4 23. c3 Ba6 24. Bd1 Rb7 25. Bd4 Rcb8 26. Bc2 Bxa3 27. bxa3 Rb1+ 0-1

[Event "Wch U16 11th"]
[Site "Guarapuava"]
[Date "1991.07.??"]
[Round "11"]
[White "Rivadavia, Esteban"]
[Black "Rojas Keim, Luis Alberto"]
[Result "0-1"]
[ECO "C01"]
[PlyCount "38"]
[EventDate "1991.07.16"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. c4 Nf6 5. Nc3 Be7 6. Nf3 0-0 7. h3 Re8 8. Be2 dxc4 9. 0-0 Be6 10. Bg5 c6 11. Re1 Nbd7 12. Qc2 Nb6 13. Rad1 Nfd5 14. Bxe7 Qxe7 15. Nb1 Qf6 16. Na3 Nf4 17. Rd2 Bd5 18. Kh2 Bxf3 19. gxf3 Qh4 0-1

[Event "Wch U16 11th"]
[Site "Guarapuava"]
[Date "1991.07.??"]
[Round "3"]
[White "Rivadavia, Esteban"]
[Black "Shankar, Roy"]
[Result "0-1"]
[ECO "B14"]
[PlyCount "72"]
[EventDate "1991.07.16"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. c4 Nf6 5. Nc3 Nc6 6. Nf3 e6 7. Bg5 Be7 8. c5 0-0 9. Bd3 h6 10. Bh4 b6 11. Rc1 bxc5 12. Ne2 c4 13. Bb1 Qa5+ 14. Nc3 Rb8 15. Ne5 Qb6 16. Qc2 Nxd4 17. Qd1 Nc6 18. Nxc6 Qxc6 19. Qc2 g6 20. Bxf6 Bxf6 21. h4 Qb6 22. Na4 Qb4+ 23. Ke2 Bd7 24. Nc3 d4 25. a3 d3+ 26. Ke1 dxc2 27. axb4 cxb1Q 28. Rxb1 Rxb4 29. Ke2 Rfb8 30. Rhd1 Rxb2+ 31. Kf3 Bc6+ 32. Ke3 Bxc3 33. Rxb2 Rxb2 34. Rd8+ Kg7 35. Rc8 Bd5 36. Rc7 e5 0-1

[Event "Wch U16 11th"]
[Site "Guarapuava"]
[Date "1991.07.??"]
[Round "9"]
[White "Steinhoff, Igor Muramatsu"]
[Black "Rivadavia, Esteban"]
[Result "1-0"]
[ECO "D36"]
[PlyCount "35"]
[EventDate "1991.07.16"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "BRA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. cxd5 exd5 6. e3 Be6 7. Nf3 Nbd7 8. Bd3 0-0 9. 0-0 c6 10. Qc2 Re8 11. Rab1 Qc7 12. h3 Bd6 13. Rfc1 Rac8 14. b4 b5 15. a4 a6 16. Ne2 Rb8 17. Qxc6 Rec8 18. Qxa6 1-0

