[Event "Asuncion"]
[Site "Asuncion"]
[Date "1960.08.22"]
[Round "13"]
[White "Mangini, Jose Thiago"]
[Black "De los Rios, Ivan"]
[Result "1/2-1/2"]
[ECO "C72"]
[PlyCount "36"]
[EventDate "1960.08.04"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "PAR"]
[SourceTitle "MCL"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. c4 Bd7 6. d4 Nxd4 7. Nxd4 exd4 8. Bxd7+ Qxd7 9. Qxd4 Nf6 10. Nc3 Be7 11. 0-0 0-0 12. b3 Qe6 13. Bb2 Qe5 14. Nd5 Nxd5 15. Qxe5 dxe5 16. cxd5 Bd6 17. Rac1 Rfe8 18. Rc4 a5 1/2-1/2

[Event "Asuncion"]
[Site "Asuncion"]
[Date "1960.08.19"]
[Round "12"]
[White "De los Rios, Ivan"]
[Black "Letelier Martner, Rene"]
[Result "1/2-1/2"]
[ECO "B95"]
[PlyCount "128"]
[EventDate "1960.08.04"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "PAR"]
[SourceTitle "MCL"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 d6 7. Be2 h6 8. Bh4 Be7 9. Bg3 0-0 10. 0-0 Qb6 11. Nb3 Rd8 12. Qd4 Qxd4 13. Nxd4 e5 14. Nb3 Nc6 15. Rfd1 Be6 16. f3 b5 17. Bf2 Nb4 18. Rd2 Rac8 19. Bb6 Rd7 20. Rad1 d5 21. exd5 Nbxd5 22. Nxd5 Rxd5 23. Bf2 Rxd2 24. Rxd2 Nd5 25. c3 Rc7 26. Nc1 Bg5 27. Rd1 Ne3 28. Bxe3 Bxe3+ 29. Kf1 Rd7 30. Rxd7 Bxd7 31. Nd3 f6 32. Nb4 a5 33. Nc2 Bc1 34. c4 bxc4 35. Bxc4+ Kf8 36. b3 Bf5 37. Ne1 Ba3 38. Bd3 Bxd3+ 39. Nxd3 Ke7 40. Ke2 Kd6 41. Ne1 Kc5 42. g4 g6 43. Nc2 Bc1 44. Kd3 Bg5 45. Ke4 Bh4 46. a3 Kd6 47. Ne3 Ke6 48. Nc4 f5+ 49. gxf5+ gxf5+ 50. Kd3 Be7 51. Nxa5 Bxa3 52. Nc4 Bc5 53. Ne3 h5 54. h3 Kf6 55. b4 Bd4 56. f4 Ba7 57. fxe5+ Kxe5 58. Ng2 Bf2 59. Ke2 Bg3 60. Kf3 h4 61. b5 Kd6 62. Ne3 f4 63. Ng2 Kc5 64. Nxf4 Kxb5 1/2-1/2

[Event "Asuncion"]
[Site "Asuncion"]
[Date "1960.08.18"]
[Round "11"]
[White "Recalde, Eleuterio"]
[Black "De los Rios, Ivan"]
[Result "0-1"]
[ECO "A21"]
[PlyCount "78"]
[EventDate "1960.08.04"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "PAR"]
[SourceTitle "MCL"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 f5 3. e4 d6 4. d4 exd4 5. Qxd4 Nc6 6. Qd1 fxe4 7. Nxe4 Qe7 8. Bd3 Bf5 9. Bg5 Nf6 10. Bxf6 gxf6 11. Qe2 Bxe4 12. Qxe4 0-0-0 13. Qxe7 Bxe7 14. Nf3 Ne5 15. Be2 d5 16. Nxe5 Bb4+ 17. Kf1 fxe5 18. a3 Bc5 19. Bg4+ Kb8 20. cxd5 Rxd5 21. Rd1 Bd4 22. b3 Rc5 23. Be2 Rc3 24. Rd3 Rc2 25. f3 c5 26. a4 Rd8 27. Rd1 Rb2 28. g4 Rxb3 29. h4 Rf8 30. Ke1 e4 31. g5 exf3 32. Bd3 Rb2 33. Rb1 Re8+ 34. Kd1 Rg2 35. Re1 Rd8 36. Re7 Bb2 37. Re3 c4 38. Rxf3 Rxd3+ 39. Rxd3 cxd3 0-1

[Event "Asuncion"]
[Site "Asuncion"]
[Date "1960.08.16"]
[Round "9"]
[White "De los Rios, Ivan"]
[Black "Rossetto, Hector"]
[Result "0-1"]
[ECO "E92"]
[PlyCount "38"]
[EventDate "1960.08.04"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "PAR"]
[SourceTitle "MCL"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. Nf3 d6 2. d4 Nf6 3. c4 g6 4. Nc3 Bg7 5. e4 0-0 6. Be2 e5 7. d5 c5 8. dxc6 bxc6 9. 0-0 Na6 10. Bg5 h6 11. Bxf6 Qxf6 12. a3 Rd8 13. b4 Nc7 14. Nd2 h5 15. b5 cxb5 16. cxb5 Bb7 17. Bf3 Bh6 18. a4 Ne6 19. g3 Bxd2 0-1

[Event "Asuncion"]
[Site "Asuncion"]
[Date "1960.08.16"]
[Round "9"]
[White "Wexler, Bernardo"]
[Black "De los Rios, Ivan"]
[Result "1-0"]
[ECO "B10"]
[PlyCount "87"]
[EventDate "1960.08.04"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "PAR"]
[SourceTitle "MCL"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. g3 d5 2. Bg2 Nf6 3. Nf3 c6 4. 0-0 g6 5. d3 Bg7 6. Nbd2 Nbd7 7. e4 e5 8. Re1 0-0 9. exd5 Nxd5 10. a4 Qc7 11. Nc4 N5b6 12. Ne3 Re8 13. Nd2 a5 14. Nb3 Nf8 15. Bd2 Nbd7 16. Nc4 b6 17. d4 Ba6 18. Nxe5 Nxe5 19. dxe5 Bxe5 20. c3 Rad8 21. Qg4 Bc8 22. Qh4 c5 23. Bg5 f6 24. Bxf6 Bxf6 25. Qxf6 Re6 26. Qg5 Rxe1+ 27. Rxe1 Qd6 28. c4 Be6 29. Bf3 Bxc4 30. Rd1 Qxd1+ 31. Bxd1 Rxd1+ 32. Kg2 Bxb3 33. Qf4 Bd5+ 34. Kh3 Be6+ 35. Kg2 Bd5+ 36. f3 Rd4 37. Qg5 Be6 38. h4 h5 39. Kf2 Rb4 40. g4 Bxg4 41. fxg4 Rxg4 42. Qd5+ Kg7 43. Qb7+ Kg8 44. Qxb6 1-0

[Event "Asuncion"]
[Site "Asuncion"]
[Date "1960.08.12"]
[Round "7"]
[White "Gligoric, Svetozar"]
[Black "De los Rios, Ivan"]
[Result "1-0"]
[ECO "C76"]
[PlyCount "65"]
[EventDate "1960.08.04"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "PAR"]
[SourceTitle "MCL"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. c3 Bd7 6. d4 g6 7. 0-0 Bg7 8. dxe5 dxe5 9. Be3 Qe7 10. b4 0-0-0 11. Nbd2 f5 12. Bb3 b6 13. Nc4 f4 14. Bc1 g5 15. a4 g4 16. Nfd2 g3 17. fxg3 fxg3 18. Rf7 Qh4 19. Nf3 gxh2+ 20. Kh1 Qg3 21. Bg5 Nh6 22. Rxg7 Ng4 23. Ra2 Be6 24. Bxd8 Rxd8 25. Nxb6+ Kb7 26. Nd5 Rf8 27. Qf1 Nf2+ 28. Rxf2 Qxg7 29. b5 Na5 30. bxa6+ Ka7 31. Qb5 Bh3 32. Qc5+ Ka8 33. Nxc7+ 1-0

[Event "Asuncion"]
[Site "Asuncion"]
[Date "1960.08.10"]
[Round "6"]
[White "De los Rios, Ivan"]
[Black "Rivarola, Benigno"]
[Result "1/2-1/2"]
[ECO "A87"]
[PlyCount "20"]
[EventDate "1960.08.04"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "PAR"]
[SourceTitle "MCL"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. Nf3 f5 2. g3 g6 3. Bg2 Bg7 4. d4 Nf6 5. 0-0 0-0 6. c4 c6 7. Nc3 d5 8. cxd5 cxd5 9. Qb3 Nc6 10. Bf4 e6 1/2-1/2

[Event "Asuncion"]
[Site "Asuncion"]
[Date "1960.08.09"]
[Round "5"]
[White "Estrada Degrandi, Walter"]
[Black "De los Rios, Ivan"]
[Result "1-0"]
[ECO "D05"]
[PlyCount "55"]
[EventDate "1960.08.04"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "PAR"]
[SourceTitle "MCL"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. e3 Nbd7 4. Nbd2 e6 5. Bd3 c5 6. c3 Qc7 7. 0-0 Be7 8. e4 dxe4 9. Nxe4 Nxe4 10. Bxe4 Nf6 11. Bc2 0-0 12. Bg5 b6 13. Qd3 g6 14. Rfe1 Bb7 15. Ne5 Nd7 16. Nxg6 Bxg5 17. Nf4 Rfc8 18. Qxh7+ Kf8 19. Rxe6 Nf6 20. Qh8+ Ng8 21. Bh7 fxe6 22. Qxg8+ Ke7 23. Qxg5+ Kd6 24. Qe5+ Kc6 25. Be4+ Kb5 26. a4+ Ka6 27. Bd3+ b5 28. Qxe6+ 1-0

[Event "Asuncion"]
[Site "Asuncion"]
[Date "1960.08.08"]
[Round "4"]
[White "De los Rios, Ivan"]
[Black "Guimard, Carlos Enrique"]
[Result "1-0"]
[ECO "A15"]
[PlyCount "101"]
[EventDate "1960.08.04"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "PAR"]
[SourceTitle "MCL"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. Nf3 e6 2. g3 b6 3. Bg2 Bb7 4. 0-0 Be7 5. d3 Nf6 6. c4 d5 7. cxd5 exd5 8. b4 0-0 9. Qa4 Re8 10. Bb2 Nbd7 11. Rc1 Bf8 12. e3 c5 13. a3 a6 14. bxc5 Nxc5 15. Qd1 b5 16. d4 Na4 17. Qb3 Rc8 18. Nc3 Nb6 19. Ne2 Qd6 20. Bc3 Nc4 21. Bb4 Qb6 22. Bxf8 Rxf8 23. h4 h6 24. Rcb1 Ne4 25. Ra2 Rb8 26. Nc3 Qa5 27. Nxe4 dxe4 28. Ne5 Nd2 29. Qb4 Qxb4 30. Rxb4 Nf3+ 31. Bxf3 exf3 32. Nd7 Rbc8 33. Nxf8 Rc1+ 34. Kh2 Kxf8 35. Rab2 Be4 36. Rd2 Ke7 37. d5 f5 38. g4 Kd6 39. gxf5 Bxf5 40. Rf4 Bd7 41. Rxf3 Rc3 42. Rg3 Rxa3 43. Rg6+ Kc7 44. Rc2+ Kd8 45. Rxg7 b4 46. d6 Rd3 47. Rg8+ Be8 48. Rc6 Kd7 49. Rxa6 Bf7 50. Ra7+ Ke6 51. Re7+ 1-0

[Event "Asuncion"]
[Site "Asuncion"]
[Date "1960.08.06"]
[Round "3"]
[White "Riego Prieto, Victorio"]
[Black "De los Rios, Ivan"]
[Result "1/2-1/2"]
[ECO "B02"]
[PlyCount "96"]
[EventDate "1960.08.04"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "PAR"]
[SourceTitle "MCL"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. Nc3 Nxc3 4. dxc3 d5 5. Bd3 c5 6. Qf3 Nc6 7. Qg3 c4 8. Be2 Bf5 9. Bd1 g6 10. f4 Bg7 11. Ne2 0-0 12. Be3 f6 13. Nd4 fxe5 14. Nxf5 exf4 15. Bxf4 Rxf5 16. Bg4 Rf6 17. Bc7 Qf8 18. 0-0-0 h6 19. Rxd5 Rf1+ 20. Rxf1 Qxf1+ 21. Rd1 Qf6 22. Qe3 Ne5 23. Bxe5 Qxe5 24. Be6+ Kh7 25. Qxe5 Bxe5 26. Rd7 b5 27. Rxe7+ Kh8 28. Bd7 Bf4+ 29. Kd1 a6 30. g3 Bg5 31. Re8+ Rxe8 32. Bxe8 Be3 33. Bxg6 Bg1 34. h3 Bh2 35. Be4 Bxg3 36. Bb7 a5 37. Ba6 b4 38. cxb4 axb4 39. Bxc4 Be5 40. a3 bxa3 41. b4 Kg7 42. Ke2 Kf6 43. Ke3 Bc3 44. b5 Ke5 45. Kd3 Be1 46. Bb3 Kd6 47. Kc4 Kc7 48. Kc5 Bf2+ 1/2-1/2

[Event "Asuncion"]
[Site "Asuncion"]
[Date "1960.08.05"]
[Round "2"]
[White "De los Rios, Ivan"]
[Black "Cantero, Ronaldo"]
[Result "1/2-1/2"]
[ECO "A88"]
[PlyCount "40"]
[EventDate "1960.08.04"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "PAR"]
[SourceTitle "MCL"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. Nf3 f5 2. c4 Nf6 3. g3 g6 4. Bg2 Bg7 5. 0-0 0-0 6. Nc3 c6 7. d4 d6 8. Qc2 a5 9. Bf4 Na6 10. Rad1 Bd7 11. Rfe1 Kh8 12. Qc1 b5 13. cxb5 cxb5 14. Ne5 Ra7 15. Nxd7 Qxd7 16. Bh6 b4 17. Bxg7+ Kxg7 18. Nd5 Nxd5 19. Bxd5 Rc8 20. Qe3 Nc7 1/2-1/2

[Event "Asuncion"]
[Site "Asuncion"]
[Date "1960.08.04"]
[Round "1"]
[White "Szabo, Laszlo"]
[Black "De los Rios, Ivan"]
[Result "1-0"]
[ECO "E01"]
[PlyCount "73"]
[EventDate "1960.08.04"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "PAR"]
[SourceTitle "MCL"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. g3 Nbd7 5. Bg2 c6 6. Qc2 Bd6 7. Nbd2 0-0 8. 0-0 e5 9. cxd5 cxd5 10. dxe5 Nxe5 11. Nxe5 Bxe5 12. Nf3 Qc7 13. Qd3 Bg4 14. Bg5 Rad8 15. Rac1 Qe7 16. Qb3 h6 17. Nxe5 Qxe5 18. Bxf6 Qxf6 19. Rfe1 Rd7 20. Bxd5 b6 21. e4 Rfd8 22. Rc6 Qe7 23. Rec1 Bh5 24. Qc3 Kh7 25. h3 Bg6 26. Qf3 f6 27. Rc8 Rxc8 28. Rxc8 Rxd5 29. exd5 Qe1+ 30. Kh2 Be4 31. Rc1 Qxc1 32. Qxe4+ Kh8 33. Qd4 Qc7 34. d6 Qd7 35. Qd5 a6 36. b4 g6 37. Qd4 1-0

[Event "Sao Paulo (SulAmericano-07)"]
[Site "Sao Paulo"]
[Date "1937.11.??"]
[Round "4"]
[White "De los Rios, Ivan"]
[Black "Charlier, Raul"]
[Result "0-1"]
[ECO "B84"]
[PlyCount "102"]
[EventDate "1937.11.06"]
[EventType "swiss"]
[EventRounds "19"]
[EventCountry "BRA"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 a6 7. 0-0 Qc7 8. Be3 b5 9. f3 Nbd7 10. Bf2 Bb7 11. Qd2 Rc8 12. Rac1 Be7 13. Nd1 Ne5 14. Ne3 Nc4 15. Nxc4 bxc4 16. b4 0-0 17. c3 Rfd8 18. Qb2 Nh5 19. Rfd1 d5 20. exd5 Bxd5 21. Kh1 Bd6 22. Bg1 Qe7 23. Bf2 Qg5 24. Bf1 Qf4 25. g3 Qf6 26. Bg2 e5 27. Nf5 Bf8 28. g4 Nf4 29. Rb1 Nxg2 30. Kxg2 Qc6 31. Qe2 e4 32. Kg1 exf3 33. Qe5 Be4 34. Rxd8 Rxd8 35. Re1 Re8 36. Qf4 Bd5 37. Rxe8 Qxe8 38. Nd4 Qa4 39. Nxf3 Qxa2 40. Kg2 Qe2 41. Qe3 Qd1 42. Bg3 h5 43. Kf2 hxg4 44. Ne1 Qb1 45. Kg1 g6 46. Qe8 Qe4 47. Qxe4 Bxe4 48. Ng2 Bxg2 49. Kxg2 Bg7 50. Be1 Be5 51. h3 gxh3+ 0-1

[Event "Sao Paulo (SulAmericano-07)"]
[Site "Sao Paulo"]
[Date "1937.11.??"]
[Round "8"]
[White "De los Rios, Ivan"]
[Black "Letelier Martner, Rene"]
[Result "0-1"]
[ECO "A09"]
[PlyCount "34"]
[EventDate "1937.11.06"]
[EventType "swiss"]
[EventRounds "19"]
[EventCountry "BRA"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. Nf3 d5 2. c4 dxc4 3. Na3 f6 4. Nxc4 e5 5. d3 c5 6. g3 Nc6 7. Bg2 Be6 8. Bd2 e4 9. Ng1 exd3 10. Ne3 Qd7 11. exd3 Ne5 12. Bc3 Nxd3+ 13. Ke2 Rd8 14. Nf3 Qb5 15. a4 Nf4+ 16. Ke1 Rxd1+ 17. Rxd1 Qe2# 0-1

[Event "Sao Paulo (SulAmericano-07)"]
[Site "Sao Paulo"]
[Date "1937.11.??"]
[Round "2"]
[White "De los Rios, Ivan"]
[Black "Trompowsky, Octavio"]
[Result "1/2-1/2"]
[ECO "E38"]
[PlyCount "34"]
[EventDate "1937.11.06"]
[EventType "swiss"]
[EventRounds "19"]
[EventCountry "BRA"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 c5 5. e3 b6 6. Bd2 Bb7 7. Nf3 0-0 8. Be2 d5 9. cxd5 cxd4 10. Nxd4 Nxd5 11. Nxd5 Bxd2+ 12. Qxd2 Bxd5 13. 0-0 Nd7 14. f3 Ne5 15. e4 Bb7 16. Qe3 Rc8 17. Rad1 Qe7 1/2-1/2

