[Event "World U20-ch14"]
[White "Botto, Dardo"]
[Black "Gigerl, Erich"]
[Site "Tjentiste"]
[Round "13"]
[Result "1/2-1/2"]
[Date "1975.08.31"]
[ECO "A05"]
[PlyCount "83"]
[EventDate "1975.08.17"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "YUG"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. Nf3 Nf6 2. b3 d6 3. c4 e5 4. d3 Be7 5. g3 0-0 6. Bg2 Nc6 7. Bb2 Bd7 8. 0-0 Qc8 9. Re1 Bh3 10. Bh1 Ng4 11. e3 f5 12. Nc3 f4 13. exf4 exf4 14. Nd5 fxg3 15. hxg3 Bf6 16. Bxf6 Nxf6 17. Ng5 Bg4 18. Qd2 h6 19. Nxf6+ Rxf6 20. Ne4 Rf8 21. Nc3 Qf5 22. Nd5 Qh5 23. d4 Rf5 24. Nf4 Qg5 25. Bd5+ Kh8 26. Re6 Rf6 27. Rxf6 Qxf6 28. Bxc6 bxc6 29. Re1 g5 30. Ng2 Rf8 31. Qe3 Rf7 32. f4 Kg7 33. d5 c5 34. Qf2 Bh3 35. Kh2 Bxg2 36. Qxg2 gxf4 37. gxf4+ Kf8 38. Rf1 Qh4+ 39. Qh3 Qxh3+ 40. Kxh3 Re7 41. Rf2 Kf7 42. Kg4 1/2-1/2

[Event "World U20-ch14"]
[White "Bernstein, David"]
[Black "Botto, Dardo"]
[Site "Tjentiste"]
[Round "12"]
[Result "1-0"]
[Date "1975.08.30"]
[ECO "A89"]
[PlyCount "73"]
[EventDate "1975.08.17"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "YUG"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 f5 2. Nf3 Nf6 3. g3 g6 4. Bg2 Bg7 5. 0-0 0-0 6. c4 d6 7. Nc3 Nc6 8. d5 Ne5 9. Nxe5 dxe5 10. Qc2 e6 11. dxe6 c6 12. b3 Bxe6 13. Ba3 Re8 14. Rfd1 Qa5 15. Bd6 Rad8 16. b4 Qa6 17. b5 cxb5 18. Nxb5 e4 19. Nc7 Qxc4 20. Qxc4 Bxc4 21. Nxe8 Nxe8 22. Bf4 Rxd1+ 23. Rxd1 Nf6 24. Be5 Bxa2 25. Ra1 Bd5 26. Rxa7 b5 27. f3 b4 28. fxe4 fxe4 29. Ra5 Be6 30. Bxf6 Bxf6 31. Bxe4 Kg7 32. Bd5 Bh3 33. Ra7+ Kh6 34. e3 Bf5 35. Bg8 g5 36. Rf7 Kg6 37. Rb7 1-0

[Event "World U20-ch14"]
[White "Botto, Dardo"]
[Black "Weber, Jean Marie"]
[Site "Tjentiste"]
[Round "11"]
[Result "1/2-1/2"]
[Date "1975.08.29"]
[ECO "B12"]
[PlyCount "150"]
[EventDate "1975.08.17"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "YUG"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. c4 dxc4 5. Bxc4 e6 6. Nc3 Nd7 7. Nge2 c5 8. Bf4 cxd4 9. Nxd4 Rc8 10. Qb3 g6 11. Rd1 Bh6 12. Nxf5 gxf5 13. Bxh6 Nxh6 14. Bxe6 fxe6 15. Qxe6+ Qe7 16. Qxh6 Qxe5+ 17. Kf1 Kd8 18. Qd2 Qe6 19. Nd5 Rg8 20. Qa5+ b6 21. Qxa7 Rxg2 22. Qxb6+ Nxb6 23. Nf4+ Qd7 24. Kxg2 Rc2 25. Rxd7+ Kxd7 26. Rd1+ Ke7 27. Nd5+ Nxd5 28. Rxd5 Rxb2 29. Rxf5 Rxa2 30. Rh5 Kf6 31. Rxh7 Kg6 32. Rb7 Kg5 33. Rb5+ Kg6 34. Kg3 Ra1 35. Rb6+ Kg5 36. Rb5+ Kg6 37. f3 Rg1+ 38. Kf2 Rh1 39. Kg2 Ra1 40. h3 Rc1 41. Ra5 Rb1 42. Kg3 Rg1+ 43. Kf4 Rh1 44. Ra6+ Kg7 45. Kg3 Rg1+ 46. Kf2 Rh1 47. Kg2 Rb1 48. h4 Rc1 49. Ra5 Kg6 50. Kg3 Rg1+ 51. Kf4 Rh1 52. Rg5+ Kf6 53. Rg4 Re1 54. Rg3 Rh1 55. Kg4 Kg6 56. Rg2 Ra1 57. h5+ Kh6 58. Rh2 Rg1+ 59. Kf5 Ra1 60. f4 Ra5+ 61. Kg4 Ra1 62. Re2 Kg7 63. Re3 Ra5 64. Re7+ Kf6 65. Rb7 Ra1 66. Rb6+ Kg7 67. Rg6+ Kf7 68. f5 Rg1+ 69. Kf4 Rf1+ 70. Kg5 Rg1+ 71. Kh6 Rf1 72. Rg7+ Kf6 73. Rg6+ Kf7 74. Kg5 Rg1+ 75. Kf4 Rf1+ 1/2-1/2

[Event "World U20-ch14"]
[White "Lim, Seng Hoo"]
[Black "Botto, Dardo"]
[Site "Tjentiste"]
[Round "10"]
[Result "1-0"]
[Date "1975.08.27"]
[ECO "A57"]
[PlyCount "65"]
[EventDate "1975.08.17"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "YUG"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 a6 5. f3 d6 6. e4 g6 7. Na3 axb5 8. Bxb5+ Nbd7 9. Ne2 Bg7 10. Nc3 0-0 11. Bg5 Ne8 12. Nc4 Ne5 13. Qd2 Nc7 14. Nxe5 Bxe5 15. Bc6 Ba6 16. Bxa8 Nxa8 17. Bh6 Re8 18. Kf2 Nb6 19. b3 e6 20. Be3 Bxc3 21. Qxc3 exd5 22. Qa5 Bd3 23. Rhe1 dxe4 24. Rad1 Qh4+ 25. Kg1 Nd5 26. Bf2 Qg5 27. h4 Qd8 28. Qxd8 Rxd8 29. fxe4 Nf4 30. Be3 Ne2+ 31. Kf2 Bb5 32. Rxe2 Bxe2 33. Kxe2 1-0

[Event "World U20-ch14"]
[White "Botto, Dardo"]
[Black "Tumanon, Frederic"]
[Site "Tjentiste"]
[Round "9"]
[Result "1-0"]
[Date "1975.08.26"]
[ECO "C07"]
[PlyCount "53"]
[EventDate "1975.08.17"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "YUG"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 Qxd5 5. Ngf3 cxd4 6. Bc4 Qd6 7. 0-0 Nc6 8. Nb3 e5 9. Ng5 Be6 10. Bxe6 fxe6 11. f4 exf4 12. Bxf4 e5 13. Nf7 Qd5 14. Bg5 Nf6 15. Nxh8 Qg8 16. Bxf6 gxf6 17. Rxf6 Qxh8 18. Qh5+ Kd8 19. Rf7 h6 20. Qf5 Be7 21. Nc5 Kc7 22. Rxe7+ Nxe7 23. Qd7+ Kb6 24. Qxe7 Rc8 25. Qd6+ Rc6 26. Nd7+ Ka5 27. Qa3+ 1-0

[Event "World U20-ch14"]
[White "Marquez, Raul"]
[Black "Botto, Dardo"]
[Site "Tjentiste"]
[Round "8"]
[Result "0-1"]
[Date "1975.08.25"]
[ECO "A58"]
[PlyCount "94"]
[EventDate "1975.08.17"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "YUG"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 a6 5. Nc3 g6 6. e4 d6 7. Nf3 Bg7 8. bxa6 0-0 9. Be2 Bxa6 10. 0-0 Qb6 11. Nd2 Nbd7 12. Qc2 Ne5 13. b3 Bxe2 14. Nxe2 Qa6 15. Nc3 Qd3 16. Qxd3 Nxd3 17. Rb1 Nd7 18. Na4 Rfb8 19. Ba3 Nb6 20. Nxb6 Rxb6 21. Nc4 Rba6 22. Rfd1 Nf4 23. Rd2 Rxa3 24. Nxa3 Rxa3 25. g3 Nh5 26. Rc2 Nf6 27. f3 Nd7 28. Kf2 Nb6 29. Ke2 Kf8 30. Re1 e6 31. dxe6 fxe6 32. Rd1 Ke7 33. Ke3 Nd7 34. f4 Ra5 35. Kf3 Bd4 36. Re1 Ra8 37. Ree2 Nb8 38. h4 Nc6 39. Rh2 Bf6 40. Ke3 Nd4 41. Rc4 Ra5 42. Rc1 Nc6 43. Re1 Ra3 44. Kf3 c4 45. Re3 Bd4 46. Ree2 Bg1 47. Rhg2 Nd4+ 0-1

[Event "World U20-ch14"]
[White "Botto, Dardo"]
[Black "Ristic, Nenad"]
[Site "Tjentiste"]
[Round "7"]
[Result "0-1"]
[Date "1975.08.24"]
[ECO "A04"]
[PlyCount "142"]
[EventDate "1975.08.17"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "YUG"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. Nf3 c5 2. g3 g6 3. Bg2 Bg7 4. e4 Nc6 5. d3 e5 6. Nc3 Nge7 7. Bg5 h6 8. Be3 Nd4 9. 0-0 0-0 10. Qd2 Kh7 11. Ne1 d6 12. Ne2 d5 13. Rd1 Ne6 14. f4 d4 15. Bf2 f5 16. Nf3 exf4 17. gxf4 Bd7 18. e5 Bc6 19. c4 Qc7 20. Bg3 Rae8 21. h4 b6 22. Rfe1 Ba8 23. Kh2 Rf7 24. Neg1 Rh8 25. Nh3 Kg8 26. Kg1 Kh7 27. h5 gxh5 28. Kh2 Rg8 29. Rg1 Bf8 30. Nh4 Bxg2 31. Rxg2 Ng6 32. Nxg6 Rxg6 33. Rdg1 Rfg7 34. Qe2 Rg4 35. Qf3 Qf7 36. Nf2 h4 37. Nxg4 hxg3+ 38. Rxg3 fxg4 39. Qe4+ Kh8 40. f5 Qh5+ 41. Kg2 Ng5 42. Qxg4 Qxg4 43. Rxg4 Re7 44. Re1 Bg7 45. e6 a5 46. Rh4 Bf8 47. Rh5 Kg7 48. Kg3 Kf6 49. Kg4 Nf7 50. Reh1 Ne5+ 51. Kf4 Nxd3+ 52. Kf3 Ne5+ 53. Ke4 Nxc4 54. Rxh6+ Bxh6 55. Rxh6+ Kg7 56. Rg6+ Kf8 57. b3 Ne3 58. Rg1 Rg7 59. Rh1 Ke7 60. Rh8 Ng4 61. Rb8 Kf6 62. Rf8+ Kg5 63. Kd3 Nf6 64. Rb8 Kxf5 65. Rxb6 Nd5 66. Rb5 Nf4+ 67. Kd2 Rg2+ 68. Kd1 Nxe6 69. Rxa5 Ke4 70. Ra3 Nc7 71. Ra5 Ne6 0-1

[Event "World U20-ch14"]
[White "Bach, Horst"]
[Black "Botto, Dardo"]
[Site "Tjentiste"]
[Round "6"]
[Result "1-0"]
[Date "1975.08.23"]
[ECO "B78"]
[PlyCount "57"]
[EventDate "1975.08.17"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "YUG"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 Nc6 8. Bc4 0-0 9. Qd2 Bd7 10. Bb3 Rc8 11. 0-0-0 Ne5 12. h4 h5 13. Bg5 Nh7 14. Bh6 Bxh6 15. Qxh6 Rxc3 16. bxc3 Qa5 17. Ne2 Bb5 18. Nd4 Bc4 19. g4 Qxc3 20. Kb1 Bxb3 21. axb3 hxg4 22. h5 g5 23. f4 gxf4 24. Nf5 Nc6 25. Rdg1 Qf6 26. Rxg4+ Kh8 27. Rg6 fxg6 28. hxg6 Rf7 29. Qf8+ 1-0

[Event "World U20-ch14"]
[White "Botto, Dardo"]
[Black "Vincent, Stephane"]
[Site "Tjentiste"]
[Round "5"]
[Result "1-0"]
[Date "1975.08.21"]
[ECO "A14"]
[PlyCount "49"]
[EventDate "1975.08.17"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "YUG"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 e6 3. b3 b6 4. g3 Be7 5. Bb2 0-0 6. Bg2 c6 7. 0-0 d5 8. d3 Bb7 9. Nbd2 c5 10. cxd5 Qxd5 11. Nc4 Rd8 12. Nce5 Nc6 13. Ng5 Qxg2+ 14. Kxg2 Nxe5+ 15. Kg1 Nfg4 16. Bxe5 Nxe5 17. Qc1 Bf6 18. Ne4 Be7 19. Nd2 Bf6 20. Rb1 Rd4 21. f4 Ng4 22. Nf3 Rd6 23. h3 Bxf3 24. Rxf3 Ne3 25. Rxe3 1-0

[Event "World U20-ch14"]
[White "Bonaposta, Ferdinand"]
[Black "Botto, Dardo"]
[Site "Tjentiste"]
[Round "4"]
[Result "0-1"]
[Date "1975.08.20"]
[ECO "A56"]
[PlyCount "46"]
[EventDate "1975.08.17"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "YUG"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. Nc3 cxd4 4. Qxd4 Nc6 5. Qd1 g6 6. Nf3 Bg7 7. e4 0-0 8. Bd3 d6 9. 0-0 h6 10. Qc2 Bg4 11. Be3 Bxf3 12. gxf3 Qc8 13. Kh1 Ne5 14. Qe2 Qh3 15. Rg1 Nxf3 16. Rg2 Ng4 17. Bf4 Be5 18. Bg3 Ngxh2 19. Rxh2 Nxh2 20. Kg1 Bxg3 21. fxg3 Qxg3+ 22. Kh1 Nf3 23. e5 Qh3+ 0-1

[Event "World U20-ch14"]
[White "Botto, Dardo"]
[Black "Taruffi, Daniele"]
[Site "Tjentiste"]
[Round "3"]
[Result "0-1"]
[Date "1975.08.19"]
[ECO "C07"]
[PlyCount "80"]
[EventDate "1975.08.17"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "YUG"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 Nf6 5. exd5 Qxd5 6. Bc4 Qh5 7. 0-0 Nc6 8. Be2 Qd5 9. c4 Qd8 10. Nb3 cxd4 11. Nbxd4 Nxd4 12. Nxd4 Bc5 13. Nb5 Qe7 14. Bf4 e5 15. Bg5 Be6 16. Nc3 h6 17. Bh4 g5 18. Bg3 Nd7 19. Nd5 Bxd5 20. Qxd5 Bd4 21. Rab1 Nc5 22. b4 Rd8 23. Qf3 Ne6 24. Bd3 Ng7 25. Be4 0-0 26. Bxb7 g4 27. Qe4 f5 28. Bd5+ Kh8 29. Qe2 f4 30. Qxg4 fxg3 31. hxg3 Rf5 32. Bf3 Qf6 33. Qh4 Rg5 34. Rb3 Nf5 35. Qh3 Nxg3 36. Bd5 Ne2+ 37. Kh1 Nf4 38. Rf3 Qg6 39. Be4 Qg7 40. Rg3 Nxh3 0-1

[Event "World U20-ch14"]
[White "Botto, Dardo"]
[Black "Muir, Andrew Joseph"]
[Site "Tjentiste"]
[Round "2"]
[Result "1/2-1/2"]
[Date "1975.08.18"]
[ECO "B67"]
[PlyCount "51"]
[EventDate "1975.08.17"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "YUG"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bg5 e6 7. Qd2 a6 8. 0-0-0 Bd7 9. f4 b5 10. Bxb5 axb5 11. Ndxb5 Nb4 12. Nxd6+ Bxd6 13. Qxd6 Nxa2+ 14. Nxa2 Rxa2 15. Bxf6 gxf6 16. Kb1 Ra7 17. Rd3 Qa8 18. Ra3 Rxa3 19. bxa3 Bc6 20. Ka1 Bxe4 21. Rb1 Bb7 22. Rb3 Rg8 23. f5 Qd8 24. Qxd8+ Kxd8 25. Rxb7 Rxg2 26. Rxf7 1/2-1/2

[Event "World U20-ch14"]
[White "Villarreal, Jose Felix"]
[Black "Botto, Dardo"]
[Site "Tjentiste"]
[Round "1"]
[Result "1/2-1/2"]
[Date "1975.08.17"]
[ECO "B23"]
[PlyCount "68"]
[EventDate "1975.08.17"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "YUG"]
[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 e6 4. Nf3 Nge7 5. Be2 d5 6. d3 g6 7. 0-0 Bg7 8. Qe1 Nd4 9. Bd1 0-0 10. Ne2 f5 11. e5 Nxf3+ 12. Rxf3 d4 13. c4 dxc3 14. bxc3 b6 15. Bb3 Nd5 16. d4 Bb7 17. Ba3 Qc7 18. c4 Ne7 19. Rd3 Rfd8 20. Qf2 Nc6 21. Rad1 cxd4 22. Nxd4 Nxd4 23. Rxd4 Rxd4 24. Qxd4 Qc6 25. Rd2 Bf8 26. Bd6 Re8 27. Kh1 Qe4 28. Qxe4 Bxe4 29. Ba4 Rd8 30. Kg1 Bh6 31. g3 g5 32. Bb4 Rxd2 33. Bxd2 gxf4 34. gxf4 Kf7 1/2-1/2

[Event "Pan American-ch U20"]
[White "Botto, Dardo"]
[Black "Christiansen, Larry Mark"]
[Site "Buenos Aires"]
[Round "?"]
[Result "0-1"]
[Date "1975.??.??"]
[ECO "B61"]
[PlyCount "44"]
[EventDate "1975.04.06"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 Bd7 7. Qd2 Rc8 8. Be2 Nxd4 9. Qxd4 Qa5 10. Bxf6 gxf6 11. 0-0 Rg8 12. Nd5 Rxc2 13. b4 Qa3 14. Bc4 Rxg2+ 15. Kxg2 Bh3+ 16. Kg1 Qf3 17. Ne3 Bh6 18. Qd1 Qxe3 19. Qd5 Qf3 20. Qxf7+ Kd7 21. Bb5+ Rc6 22. Qg8 Bg5 0-1

[Event "Pan American-ch U20"]
[White "Botto, Dardo"]
[Black "Gomez Baillo, Jorge H"]
[Site "Buenos Aires"]
[Round "?"]
[Result "0-1"]
[Date "1975.??.??"]
[ECO "B67"]
[PlyCount "68"]
[EventDate "1975.04.06"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bg5 e6 7. Qd2 a6 8. 0-0-0 Bd7 9. f4 h6 10. Bh4 Nxe4 11. Nxe4 Qxh4 12. Nxc6 Bxc6 13. Nxd6+ Bxd6 14. Qxd6 Rd8 15. Qxd8+ Qxd8 16. Rxd8+ Kxd8 17. Bd3 g5 18. f5 Bxg2 19. Re1 Bh3 20. fxe6 Bxe6 21. Kd2 Kd7 22. a4 f5 23. b4 f4 24. a5 Rc8 25. b5 axb5 26. Bxb5+ Kd6 27. a6 bxa6 28. Bxa6 Rc7 29. Bd3 g4 30. Rg1 h5 31. Be2 Ke5 32. h3 f3 33. Bd3 Kf4 34. Bg6 g3 0-1

[Event "Pan American-ch U20"]
[White "Botto, Dardo"]
[Black "Mundell, Peter"]
[Site "Buenos Aires"]
[Round "?"]
[Result "0-1"]
[Date "1975.??.??"]
[ECO "B62"]
[PlyCount "33"]
[EventDate "1975.04.06"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Qd3 Bd7 8. 0-0-0 a6 9. Nb3 Qc7 10. Be2 Rc8 11. f4 Nb4 12. Qe3 Nxa2+ 13. Kd2 Nxc3 14. bxc3 Nxe4+ 15. Qxe4 Qxc3+ 16. Kc1 Qxb3 17. Rd3 0-1

[Event "Pan American-ch U20"]
[White "Botto, Dardo"]
[Black "Sunye Neto, Jaime"]
[Site "Buenos Aires"]
[Round "?"]
[Result "0-1"]
[Date "1975.??.??"]
[ECO "B42"]
[PlyCount "58"]
[EventDate "1975.04.06"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Qc7 6. c4 g6 7. Nc3 Bg7 8. Be3 Ne7 9. Qd2 0-0 10. 0-0 d6 11. Rac1 Nbc6 12. Be2 Ne5 13. Rfd1 f5 14. f4 Nf7 15. exf5 gxf5 16. Bf3 Bd7 17. Qf2 Rac8 18. Kh1 Qb8 19. b3 b5 20. cxb5 axb5 21. Ndxb5 Bxb5 22. Ba7 Qc7 23. Nxb5 Qxc1 24. Be3 Qb2 25. Rd2 Rc1+ 26. Bd1 Nd5 27. g3 Qb1 28. Rxd5 Rxd1+ 29. Rxd1 Qxd1+ 0-1

[Event "Pan American-ch U20"]
[White "Botto, Dardo"]
[Black "Tosan Pereira, Felipe"]
[Site "Buenos Aires"]
[Round "?"]
[Result "1/2-1/2"]
[Date "1975.??.??"]
[ECO "B77"]
[PlyCount "81"]
[EventDate "1975.04.06"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. f3 Nc6 8. Bc4 0-0 9. Qd2 Bd7 10. h4 Qb8 11. Bb3 Rc8 12. h5 Nxh5 13. Nd5 Re8 14. g4 Nf6 15. Nxc6 bxc6 16. Nxf6+ exf6 17. Qh2 Be6 18. Qxh7+ Kf8 19. 0-0-0 Bxb3 20. axb3 a5 21. e5 fxe5 22. Bh6 Bxh6+ 23. Qxh6+ Ke7 24. Qg5+ Ke6 25. f4 Qd8 26. f5+ Kd7 27. Rxd6+ Kxd6 28. Rd1+ Kc7 29. Rxd8 Raxd8 30. fxg6 fxg6 31. Qxg6 e4 32. Qf7+ Kb6 33. c4 e3 34. c5+ Ka6 35. Qc7 Rb8 36. Qxc6+ Ka7 37. Qd7+ Ka6 38. Qc6+ Ka7 39. Qd7+ Ka6 40. Qc6+ Ka7 41. Qd7+ 1/2-1/2

[Event "Pan American-ch U20"]
[White "Bravo Sedamanos, Hector"]
[Black "Botto, Dardo"]
[Site "Buenos Aires"]
[Round "?"]
[Result "1-0"]
[Date "1975.??.??"]
[ECO "B78"]
[PlyCount "81"]
[EventDate "1975.04.06"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 0-0 8. Qd2 Nc6 9. Bc4 Bd7 10. h4 Rc8 11. Bb3 h5 12. 0-0-0 Ne5 13. Bh6 Bxh6 14. Qxh6 Rxc3 15. bxc3 Qa5 16. g4 Qxc3 17. Kb1 a5 18. gxh5 a4 19. hxg6 axb3 20. cxb3 Nd3 21. Rh2 Rc8 22. Qe3 Ne5 23. gxf7+ Kxf7 24. Qe2 Nh5 25. Qf2 Nf4 26. h5 Ned3 27. Qe3 e5 28. Nf5 Bxf5 29. exf5 d5 30. h6 d4 31. Qg1 Rg8 32. Qf1 Qc8 33. Rc2 Qxf5 34. Ka1 Nb4 35. Rc7+ Kg6 36. Qg1+ Kxh6 37. Qxg8 Nc2+ 38. Rxc2 Qxc2 39. Rh1+ Nh5 40. Qh8+ Kg6 41. Qxh5+ 1-0

[Event "Pan American-ch U20"]
[White "Cifuentes Parada, Roberto"]
[Black "Botto, Dardo"]
[Site "Buenos Aires"]
[Round "?"]
[Result "1-0"]
[Date "1975.??.??"]
[ECO "A97"]
[PlyCount "85"]
[EventDate "1975.04.06"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. d4 f5 2. c4 Nf6 3. g3 e6 4. Bg2 Be7 5. Nf3 0-0 6. 0-0 d6 7. Nc3 Qe8 8. Bg5 Ne4 9. Bxe7 Nxc3 10. bxc3 Qxe7 11. e3 Nd7 12. Nd2 c6 13. a4 e5 14. a5 a6 15. Qb3 Qf7 16. Qa3 Qg6 17. f4 e4 18. c5 d5 19. c4 Nf6 20. Rab1 h5 21. cxd5 cxd5 22. Qc1 Kh7 23. Qe1 h4 24. gxh4 Rh8 25. Qg3 Qf7 26. Bh3 Kg8 27. Kf2 Ng4+ 28. Bxg4 fxg4 29. Rb6 Qe7 30. Rd6 Rxh4 31. Rxd5 Rh3 32. Re5 Qd8 33. Qg2 Qh4+ 34. Kg1 g3 35. Nxe4 gxh2+ 36. Kh1 Bg4 37. Rg5 Be6 38. Rh5 Qe7 39. Rxh3 Bxh3 40. Qxh3 Qxe4+ 41. Qf3 Qc2 42. Rf2 Qb3 43. Kxh2 1-0

[Event "Pan American-ch U20"]
[White "Pantoja, Abel"]
[Black "Botto, Dardo"]
[Site "Buenos Aires"]
[Round "?"]
[Result "0-1"]
[Date "1975.??.??"]
[ECO "B75"]
[PlyCount "68"]
[EventDate "1975.04.06"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Bc4 Bg7 7. 0-0 0-0 8. f3 Nc6 9. Be3 Qb6 10. Bb5 Ng4 11. fxg4 Bxd4 12. Bxd4 Qxd4+ 13. Rf2 Qxd1+ 14. Rxd1 Bxg4 15. Rdf1 Be6 16. Nd5 Bxd5 17. exd5 Ne5 18. Be2 Rac8 19. c3 Rc5 20. Rd1 b5 21. Rf4 Rb8 22. h4 a5 23. a3 a4 24. Rb4 Nc4 25. Rd4 Ne3 26. Re4 Nc2 27. Rxb5 Rbxb5 28. Bxb5 Rxb5 29. Rxa4 Rxb2 30. Ra8+ Kg7 31. a4 Ne3 32. a5 Rxg2+ 33. Kh1 Ra2 34. a6 Nxd5 0-1

[Event "Pan American-ch U20"]
[White "Villarreal, Jose Felix"]
[Black "Botto, Dardo"]
[Site "Buenos Aires"]
[Round "?"]
[Result "1-0"]
[Date "1975.??.??"]
[ECO "B23"]
[PlyCount "79"]
[EventDate "1975.04.06"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 d6 3. f4 g6 4. Nf3 Bg7 5. Bc4 Nc6 6. 0-0 e6 7. f5 exf5 8. d3 Nge7 9. Qe1 0-0 10. Qh4 h5 11. Bg5 Qc7 12. Rae1 fxe4 13. dxe4 Be6 14. Bxe6 fxe6 15. Rd1 Bxc3 16. bxc3 d5 17. exd5 exd5 18. g4 hxg4 19. Qxg4 Rf7 20. Rde1 Qc8 21. Qg2 Qf8 22. Re6 Qg7 23. Bxe7 Nxe7 24. Rfe1 Re8 25. Ne5 Rf6 26. Nxg6 Rxe6 27. Rxe6 Kh7 28. Qh3+ Kg8 29. Qg3 Kh7 30. Qh4+ Kg8 31. Qg5 Kh7 32. Rxe7 Rxe7 33. Qxe7 Kxg6 34. Qxg7+ Kxg7 35. Kg2 Kg6 36. Kf3 Kg5 37. Kg3 b6 38. Kf3 Kh4 39. Kf4 Kh3 40. Ke5 1-0

