[Event "World U20-ch19"]
[Site "Dortmund"]
[Date "1980.08.31"]
[Round "13"]
[White "Allen, Keith"]
[Black "Yosida, T."]
[Result "1-0"]
[ECO "A30"]
[PlyCount "93"]
[EventDate "1980.08.17"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "GER"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. Nf3 e6 4. g3 b6 5. Bg2 Bb7 6. 0-0 cxd4 7. Nxd4 Bxg2 8. Kxg2 Nc6 9. Nb5 d6 10. Bf4 e5 11. Bg5 a6 12. N5c3 Be7 13. Qa4 Qd7 14. Bxf6 Bxf6 15. Nd5 Bd8 16. Nbc3 h5 17. h4 Nd4 18. e3 Nf5 19. Rfd1 Rh6 20. Qxd7+ Kxd7 21. Rac1 Rg6 22. Kf3 Rc8 23. Na4 Rc6 24. Nb4 Rc8 25. c5 a5 26. c6+ Ke8 27. Nd5 Ne7 28. c7 e4+ 29. Ke2 Bxc7 30. Nxc7+ Kd8 31. Nb5 d5 32. Rxc8+ Kxc8 33. Nac3 Kb7 34. Nxd5 Nc6 35. Nf4 Rf6 36. Rd7+ Kb8 37. Nd6 Ne5 38. Re7 Nc6 39. Re8+ Kc7 40. Nxe4 Rf5 41. Nc3 Kd7 42. Rg8 g6 43. Nfd5 b5 44. e4 Re5 45. Kd3 b4 46. Na4 f5 47. Nab6+ 1-0

[Event "World U20-ch19"]
[Site "Dortmund"]
[Date "1980.08.30"]
[Round "12"]
[White "Yosida, T."]
[Black "Valiente, Cristobal"]
[Result "0-1"]
[ECO "B06"]
[PlyCount "76"]
[EventDate "1980.08.17"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "GER"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nf3 d6 4. Bc4 Nf6 5. Qe2 c6 6. Bb3 0-0 7. 0-0 Bg4 8. Nbd2 e5 9. dxe5 dxe5 10. h3 Bxf3 11. Qxf3 Nbd7 12. Nc4 b5 13. Nd6 Nc5 14. Rd1 Qe7 15. Be3 Ne6 16. c4 Rad8 17. c5 Ne8 18. Nxe8 Rfxe8 19. Rac1 Nd4 20. Bxd4 exd4 21. Rc2 Be5 22. a4 a6 23. g3 Kg7 24. Kg2 Rd7 25. Qe2 Bc7 26. f4 Qxe4+ 27. Qxe4 Rxe4 28. Rcd2 Ba5 29. Rd3 Re2+ 30. Kf1 Rxb2 31. Ra1 Bc3 32. axb5 Rxb3 33. bxc6 Rc7 34. Rxa6 Rb5 35. Ke2 Rxc5 36. Kf3 R5xc6 37. Ra4 Re7 38. g4 Rce6 0-1

[Event "World U20-ch19"]
[Site "Dortmund"]
[Date "1980.08.29"]
[Round "11"]
[White "Yosida, T."]
[Black "Rodas Martini, Pablo"]
[Result "1/2-1/2"]
[ECO "B03"]
[PlyCount "33"]
[EventDate "1980.08.17"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "GER"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. c4 Nb6 5. f4 dxe5 6. fxe5 c5 7. d5 e6 8. Nc3 exd5 9. cxd5 c4 10. g3 Bc5 11. Bg2 0-0 12. Qh5 g6 13. Qh6 Re8 14. Bf4 Bf8 15. Qh4 Be7 16. Qh6 Bf8 17. Qh4 1/2-1/2

[Event "World U20-ch19"]
[Site "Dortmund"]
[Date "1980.08.27"]
[Round "10"]
[White "Belkhodja, Slim"]
[Black "Yosida, T."]
[Result "0-1"]
[ECO "C05"]
[PlyCount "98"]
[EventDate "1980.08.17"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "GER"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. f4 c5 6. c3 Nc6 7. Ndf3 Qa5 8. Kf2 b5 9. Be3 b4 10. Ne2 Ba6 11. cxb4 Qxb4 12. Qc2 Rc8 13. a3 Qb6 14. Rc1 cxd4 15. Nexd4 Nc5 16. Bxa6 Qxa6 17. Nxc6 Rxc6 18. Kg1 Kd7 19. Nd4 Rc8 20. g3 Be7 21. Kg2 h5 22. Rhd1 Ne4 23. Qb3 Rb8 24. Qa2 Rhc8 25. f5 Rxc1 26. Rxc1 Qd3 27. Re1 Bc5 28. Qb1 Qxb1 29. Rxb1 Nc3 30. Rc1 Rxb2+ 31. Kh3 Ne4 32. fxe6+ fxe6 33. Rf1 g5 34. g4 hxg4+ 35. Kxg4 Rxh2 36. Rf7+ Ke8 37. Rc7 Rh4+ 38. Kf3 g4+ 39. Kg2 Rh3 40. Bf2 Bb6 41. Rg7 Nxf2 42. Nxe6 Rh5 43. Nc7+ Bxc7 44. Rxc7 Ne4 45. Rxa7 Rxe5 46. a4 d4 47. Rb7 d3 48. Rb4 Nc3 49. Rb2 Re2+ 0-1

[Event "World U20-ch19"]
[Site "Dortmund"]
[Date "1980.08.26"]
[Round "9"]
[White "Yosida, T."]
[Black "James, Simon"]
[Result "0-1"]
[ECO "B06"]
[PlyCount "82"]
[EventDate "1980.08.17"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "GER"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nf3 d6 4. Bc4 a6 5. Bb3 b5 6. a4 c6 7. 0-0 Nf6 8. Qe2 0-0 9. c3 Qc7 10. axb5 cxb5 11. Bg5 e5 12. d5 h6 13. Bd2 Nbd7 14. Na3 Nc5 15. Bc2 Rb8 16. Ne1 Nfd7 17. f4 exf4 18. Bxf4 Ne5 19. Nd3 Bg4 20. Qe3 Ncxd3 21. Bxd3 Kh7 22. Nc2 a5 23. Nd4 Bd7 24. Nf3 Ng4 25. Qe1 b4 26. Qg3 bxc3 27. Bxd6 Qb6+ 28. Kh1 cxb2 29. Rab1 a4 30. Bxf8 Rxf8 31. Rbe1 a3 32. Bb1 Bc3 33. Re2 Qa6 34. Ng1 Be5 35. Qb3 Bb5 36. d6 Bc4 37. Bd3 Bxb3 38. Bxa6 a2 39. d7 b1Q 40. Rxb1 axb1Q 41. Rd2 Bxh2 0-1

[Event "World U20-ch19"]
[Site "Dortmund"]
[Date "1980.08.25"]
[Round "8"]
[White "Hadi, Jardak"]
[Black "Yosida, T."]
[Result "1/2-1/2"]
[ECO "C20"]
[PlyCount "96"]
[EventDate "1980.08.17"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "GER"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 e5 2. b3 Nf6 3. Nc3 Bc5 4. Be2 d5 5. exd5 Nxd5 6. Ne4 Bd4 7. c3 Bb6 8. Ba3 Nf4 9. g3 Nd3+ 10. Bxd3 Qxd3 11. Qe2 Qxe2+ 12. Nxe2 Bg4 13. d3 Nd7 14. c4 f5 15. Ng5 h6 16. f3 Bh5 17. g4 hxg5 18. gxh5 f4 19. b4 Be3 20. Bc1 Bxc1 21. Rxc1 c5 22. b5 Rxh5 23. Kf2 Kf7 24. Nc3 Nf6 25. h3 Rd8 26. Rcd1 b6 27. Kg2 Ke6 28. Rhe1 Rdh8 29. Rh1 Rh4 30. a4 Nh5 31. Ne4 Kf5 32. Nd6+ Kg6 33. Ne4 Nf6 34. Nf2 Kf7 35. a5 Ra8 36. Ra1 Rhh8 37. Ra2 a6 38. axb6 axb5 39. Rxa8 Rxa8 40. cxb5 Rb8 41. Rc1 Rxb6 42. Rxc5 Ke6 43. d4 Nd7 44. Rc6+ Rxc6 45. bxc6 Nb6 46. dxe5 Kxe5 47. Ne4 Nd5 48. Kf2 Nc7 1/2-1/2

[Event "World U20-ch19"]
[Site "Dortmund"]
[Date "1980.08.24"]
[Round "7"]
[White "Obando, Arnoldo"]
[Black "Yosida, T."]
[Result "1-0"]
[ECO "C19"]
[PlyCount "101"]
[EventDate "1980.08.17"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "GER"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Bxc3+ 6. bxc3 Ne7 7. Nf3 Bd7 8. a4 Qa5 9. Bd2 Nbc6 10. Bd3 c4 11. Be2 Nf5 12. 0-0 f6 13. exf6 gxf6 14. Re1 0-0-0 15. Bf1 Rhg8 16. Qc1 Nce7 17. Qb2 Qc7 18. Kh1 Rg7 19. Rab1 Ng6 20. g3 Rdg8 21. Bg2 h5 22. Bh3 e5 23. dxe5 fxe5 24. Nxe5 Nxg3+ 25. fxg3 Bxh3 26. Nxg6 Rxg6 27. Bf4 Qf7 28. Qb4 d4 29. Qc5+ Rc6 30. Qe5 Rc7 31. Qxc7+ Qxc7 32. Bxc7 Kxc7 33. cxd4 h4 34. Re7+ Kd6 35. Re3 b6 36. Kg1 hxg3 37. Rxg3 Rxg3+ 38. hxg3 Kd5 39. c3 Bf5 40. Re1 Bc2 41. a5 Be4 42. axb6 axb6 43. g4 b5 44. g5 b4 45. cxb4 Kxd4 46. Rxe4+ Kxe4 47. Kf2 Kd3 48. g6 c3 49. g7 c2 50. g8Q c1Q 51. Qd5+ 1-0

[Event "World U20-ch19"]
[Site "Dortmund"]
[Date "1980.08.23"]
[Round "6"]
[White "Yosida, T."]
[Black "Cauchy, D."]
[Result "1-0"]
[ECO "B41"]
[PlyCount "73"]
[EventDate "1980.08.17"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "GER"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Nf6 6. c4 Nc6 7. Nxc6 dxc6 8. 0-0 e5 9. Nc3 Be7 10. Qe2 0-0 11. a4 Be6 12. Kh1 Ne8 13. f4 exf4 14. Bxf4 Bg5 15. Bg3 Qe7 16. e5 f5 17. exf6 Rxf6 18. Ne4 Rxf1+ 19. Rxf1 Bf7 20. Rxf7 Kxf7 21. Qh5+ g6 22. Qxg5 Qxg5 23. Nxg5+ Kg8 24. c5 h6 25. Ne4 Rd8 26. Nd6 Nxd6 27. cxd6 g5 28. Bc4+ Kh7 29. Be6 Kg6 30. d7 h5 31. Bc7 Rf8 32. Kg1 Kf6 33. d8Q+ Rxd8 34. Bxd8+ Kxe6 35. Bxg5 b5 36. axb5 cxb5 37. b4 1-0

[Event "World U20-ch19"]
[Site "Dortmund"]
[Date "1980.08.21"]
[Round "5"]
[White "Grant, Carl"]
[Black "Yosida, T."]
[Result "1-0"]
[ECO "C19"]
[PlyCount "101"]
[EventDate "1980.08.17"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "GER"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Bxc3+ 6. bxc3 Ne7 7. Nf3 Bd7 8. Be2 Ba4 9. Rb1 Qc7 10. Bb5+ Bxb5 11. Rxb5 c4 12. Bd2 Nbc6 13. Ng5 h6 14. Nf3 0-0-0 15. Qb1 f6 16. Bf4 Ng6 17. Bg3 fxe5 18. a4 b6 19. a5 Nxa5 20. Nxe5 Nxe5 21. Bxe5 Qb7 22. 0-0 Nc6 23. Re1 Nxe5 24. Rxe5 Qf7 25. Qb4 Rhf8 26. f3 Qd7 27. Re3 Rf5 28. Kf2 Re8 29. Kg1 h5 30. Qa4 e5 31. Qa6+ Kb8 32. Qa4 Kc8 33. Qa6+ Kd8 34. Qa4 e4 35. Qb4 Qe6 36. fxe4 dxe4 37. Rxf5 Qxf5 38. Qd6+ Qd7 39. Qb8+ Ke7 40. Rxe4+ Kf8 41. Qf4+ Kg8 42. Rxe8+ Qxe8 43. h3 Qe1+ 44. Kh2 Qxc3 45. Qe5 Qa5 46. d5 Qc5 47. Qe6+ Kf8 48. d6 Qg5 49. Qc8+ Kf7 50. Qc7+ Ke6 51. d7 1-0

[Event "World U20-ch19"]
[Site "Dortmund"]
[Date "1980.08.20"]
[Round "4"]
[White "Yosida, T."]
[Black "Lazar, Yaroslav"]
[Result "0-1"]
[ECO "C14"]
[PlyCount "72"]
[EventDate "1980.08.17"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "GER"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Be7 5. e5 Nfd7 6. Bxe7 Qxe7 7. f4 0-0 8. Nf3 c5 9. Qd2 Nc6 10. 0-0-0 a6 11. g4 b5 12. g5 Bb7 13. Bg2 Rac8 14. h4 cxd4 15. Nxd4 Nxd4 16. Qxd4 Rc4 17. Qd2 Rfc8 18. a3 Rxc3 19. bxc3 Qxa3+ 20. Kb1 Rxc3 21. Qc1 Qb4+ 22. Qb2 Rc4 23. Rd3 Nc5 24. Rg3 Qd2 25. c3 Qxf4 26. Rf3 Qe4+ 27. Qc2 Qxc2+ 28. Kxc2 d4 29. Rg3 Bxg2 30. Rxg2 Rxc3+ 31. Kb1 d3 32. Rc1 b4 33. Kb2 Ne4 34. Rg4 Rxc1 35. Kxc1 d2+ 36. Kc2 d1Q+ 0-1

[Event "World U20-ch19"]
[Site "Dortmund"]
[Date "1980.08.19"]
[Round "3"]
[White "Tavares, Shawn P"]
[Black "Yosida, T."]
[Result "1-0"]
[ECO "C15"]
[PlyCount "59"]
[EventDate "1980.08.17"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "GER"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 dxe4 6. Qg4 Nf6 7. Qxg7 Rg8 8. Qh6 Rg6 9. Qd2 Nc6 10. Bb2 b6 11. f3 Bb7 12. Bb5 Qd6 13. 0-0-0 0-0-0 14. Qe2 Ne7 15. Kb1 Kb8 16. fxe4 Nxe4 17. Nf3 Nd5 18. Qe1 Rxg2 19. Ne5 Rg7 20. c4 Ndf6 21. Rf1 c6 22. Ba4 Qc7 23. Qh4 Qe7 24. Bxc6 Ng5 25. d5 Nfe4 26. Bxb7 Kxb7 27. Nc6 Qf8 28. Nxd8+ Kc8 29. Nxe6 Nxe6 30. dxe6 1-0

[Event "World U20-ch19"]
[Site "Dortmund"]
[Date "1980.08.18"]
[Round "2"]
[White "Yosida, T."]
[Black "Cuijpers, Frans Andre"]
[Result "0-1"]
[ECO "B08"]
[PlyCount "64"]
[EventDate "1980.08.17"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "GER"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Nf3 Bg7 5. Be2 0-0 6. 0-0 Bg4 7. Be3 Nc6 8. Qd2 e5 9. d5 Ne7 10. a4 Bd7 11. h3 Ne8 12. Bh6 f5 13. Rfd1 f4 14. Bxg7 Nxg7 15. Bb5 Bc8 16. a5 h6 17. Be2 g5 18. Nh2 h5 19. Na4 Ng6 20. Ra3 Nh4 21. g3 fxg3 22. Rxg3 Rf4 23. Nc3 Ng6 24. Nf3 g4 25. hxg4 hxg4 26. Ne1 Nh5 27. Rg2 Nh4 28. Rh2 Qg5 29. Bf1 Bd7 30. Bg2 g3 31. fxg3 Qxg3 32. Nd3 Nf3+ 0-1

[Event "World U20-ch19"]
[Site "Dortmund"]
[Date "1980.08.17"]
[Round "1"]
[White "Gerbert, Philipp"]
[Black "Yosida, T."]
[Result "1-0"]
[ECO "C00"]
[PlyCount "89"]
[EventDate "1980.08.17"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "GER"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 e6 2. d3 d5 3. Nd2 Nf6 4. Ngf3 b6 5. g3 dxe4 6. dxe4 Bb7 7. Qe2 Be7 8. Bg2 0-0 9. 0-0 Nbd7 10. e5 Nd5 11. a3 c5 12. c4 Nc7 13. Ne4 h6 14. h4 f5 15. exf6 Nxf6 16. Rd1 Qe8 17. Ne5 Nxe4 18. Bxe4 Bxe4 19. Qxe4 Rd8 20. Bf4 Qh5 21. Nd7 Qg4 22. f3 Rxf4 23. Qxf4 Qxf4 24. gxf4 Bxh4 25. Ne5 Ne8 26. Rxd8 Bxd8 27. Rd1 Bf6 28. Rd7 a5 29. b3 Kh7 30. Kg2 h5 31. Rb7 Nd6 32. Rxb6 Nf5 33. Rxe6 Nd4 34. Rb6 Ne2 35. Nd3 Bd4 36. Ra6 Be3 37. Rxa5 Kg6 38. Nxc5 Nxf4+ 39. Kh2 h4 40. Ne4 Kh6 41. c5 Ne2 42. c6 g5 43. Nxg5 Nc1 44. Ne4 Nxb3 45. Ra7 1-0

