[Event "World U20-ch19"]
[Site "Dortmund"]
[Date "1980.08.31"]
[Round "13"]
[White "Obando, Arnoldo"]
[Black "Belkhodja, Slim"]
[Result "1/2-1/2"]
[ECO "B32"]
[PlyCount "69"]
[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 Nc6 3. d4 cxd4 4. Nxd4 e5 5. Nb5 a6 6. Nd6+ Bxd6 7. Qxd6 Qf6 8. Qd3 Nge7 9. c3 0-0 10. g3 Rd8 11. Bg2 Qg6 12. 0-0 d5 13. Qe2 dxe4 14. Bxe4 Bf5 15. Bxf5 Nxf5 16. Nd2 Rd5 17. Nc4 Rad8 18. Ne3 Nxe3 19. Bxe3 Qd3 20. Qxd3 Rxd3 21. Rfc1 R8d7 22. Kf1 f5 23. Ke2 Kf7 24. Rd1 Rxd1 25. Rxd1 Rxd1 26. Kxd1 Ke6 27. Ke2 b5 28. b3 Kd5 29. h4 Nd8 30. Kd3 e4+ 31. Ke2 Ne6 32. Ba7 f4 33. Bb8 fxg3 34. fxg3 a5 35. Ba7 1/2-1/2

[Event "World U20-ch19"]
[Site "Dortmund"]
[Date "1980.08.30"]
[Round "12"]
[White "Santo Roman, Marc"]
[Black "Obando, Arnoldo"]
[Result "1-0"]
[ECO "C68"]
[PlyCount "51"]
[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. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. 0-0 Bg4 6. h3 h5 7. d3 Qf6 8. Nbd2 Bd6 9. Re1 Ne7 10. hxg4 hxg4 11. Nh2 Bc5 12. Nxg4 Qh4 13. Kf1 Qh1+ 14. Ke2 Qh5 15. f3 f5 16. exf5 0-0-0 17. Ne4 Nxf5 18. Bg5 Rd4 19. Qd2 Rf8 20. c3 Rd5 21. Kd1 Bb6 22. Kc2 Qe8 23. Ne3 Nxe3+ 24. Bxe3 c5 25. c4 Rd8 26. Bxc5 1-0

[Event "World U20-ch19"]
[Site "Dortmund"]
[Date "1980.08.29"]
[Round "11"]
[White "Allen, Keith"]
[Black "Obando, Arnoldo"]
[Result "0-1"]
[ECO "D80"]
[PlyCount "71"]
[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 g6 3. Nc3 d5 4. f3 Nc6 5. cxd5 Nxd5 6. e4 Nb6 7. d5 Ne5 8. f4 Ned7 9. Qd4 Nf6 10. a4 a5 11. Bb5+ c6 12. Be3 Nbxd5 13. Bc4 Nxe3 14. Bxf7+ Kxf7 15. Qxd8 Nc2+ 16. Kf1 Bg7 17. Qd3 Nxa1 18. Nf3 Rf8 19. Ng5+ Kg8 20. Ke2 b6 21. Qc4+ e6 22. Nxe6 Ba6 23. Nb5 cxb5 24. axb5 Rfc8 25. Nc7+ Kh8 26. bxa6 Ne8 27. Rxa1 Rxc7 28. Qb5 Rca7 29. Rd1 Rxa6 30. e5 Bf8 31. Rd7 Ng7 32. Qd5 a4 33. e6 Re8 34. Rd8 Rxe6+ 35. Kf3 Rf6 36. Qe5 0-1

[Event "World U20-ch19"]
[Site "Dortmund"]
[Date "1980.08.27"]
[Round "10"]
[White "Obando, Arnoldo"]
[Black "Long, Peter"]
[Result "1/2-1/2"]
[ECO "B40"]
[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 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Bb4 6. Bd3 Nc6 7. Nde2 0-0 8. 0-0 Ne5 9. Bf4 d6 10. a3 Bc5 11. Na4 Qc7 12. Bxe5 dxe5 13. Nxc5 Qxc5 14. Ng3 Rd8 15. Nh5 Nxh5 16. Qxh5 Qd4 17. b3 Bd7 18. Kh1 Bc6 19. Rae1 Rd7 20. f4 exf4 21. Rxf4 g6 22. Qg5 Qg7 23. e5 Rd5 24. Rf6 Rad8 25. Ref1 R8d7 26. R1f2 Bb5 27. Bxb5 Rxb5 28. h3 Rbd5 29. Qe3 b6 30. a4 Rd4 31. Qf3 R4d5 32. Qe3 Rd4 1/2-1/2

[Event "World U20-ch19"]
[Site "Dortmund"]
[Date "1980.08.26"]
[Round "9"]
[White "Fowler, John"]
[Black "Obando, Arnoldo"]
[Result "1-0"]
[ECO "A21"]
[PlyCount "51"]
[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. c4 e5 2. Nc3 f5 3. e3 Nf6 4. Nge2 Be7 5. b3 0-0 6. Bb2 d6 7. d4 c6 8. Qc2 Qe8 9. 0-0-0 b5 10. Ng3 b4 11. Na4 e4 12. f3 Bd8 13. fxe4 fxe4 14. h3 Nbd7 15. Nf5 Bc7 16. g4 Nb6 17. d5 Nxa4 18. bxa4 cxd5 19. Nxg7 Qg6 20. Nf5 Bxf5 21. gxf5 Qg3 22. cxd5 Bb6 23. Ba6 Bxe3+ 24. Kb1 Qg7 25. Qh2 Bc5 26. Rhg1 1-0

[Event "World U20-ch19"]
[Site "Dortmund"]
[Date "1980.08.25"]
[Round "8"]
[White "Obando, Arnoldo"]
[Black "Lazar, Yaroslav"]
[Result "1-0"]
[ECO "C00"]
[PlyCount "85"]
[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. g3 b6 5. Bg2 Bb7 6. Nh3 c5 7. 0-0 Be7 8. Re1 Nc6 9. Nf4 0-0 10. b3 Rc8 11. Bb2 Na5 12. e5 Nd7 13. c3 Nc6 14. d4 cxd4 15. cxd4 Nb4 16. Rf1 Ba6 17. a3 Bxf1 18. Bxf1 Nc6 19. Bd3 Bg5 20. Qh5 h6 21. h4 Bxf4 22. gxf4 f5 23. Kh2 Qe8 24. Qe2 Ne7 25. h5 Kh7 26. a4 Rg8 27. Bb5 Rc7 28. Ba3 Nc8 29. Rg1 a5 30. Bd6 Nxd6 31. exd6 Rc3 32. Rg6 Qd8 33. Bxd7 Qxd7 34. Rxe6 Rgc8 35. Qe5 Qf7 36. Rg6 Rd3 37. Nf1 Rc2 38. Kg2 Rxb3 39. Ne3 Re2 40. Qxf5 Qxf5 41. Nxf5 Re8 42. Rxg7+ Kh8 43. d7 1-0

[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 "Faseyitan, Olufemi"]
[Black "Obando, Arnoldo"]
[Result "1-0"]
[ECO "D79"]
[PlyCount "75"]
[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. Nf3 Nf6 2. g3 c5 3. Bg2 Nc6 4. 0-0 g6 5. c3 Bg7 6. d4 cxd4 7. cxd4 d5 8. Nc3 0-0 9. Bf4 Nh5 10. Bc1 e6 11. Bg5 Qd7 12. Qd2 b6 13. Bh6 Ba6 14. Rfd1 f5 15. Bxg7 Qxg7 16. Ng5 Nd8 17. Nxd5 h6 18. Nc3 Rc8 19. Nf3 Bb7 20. Ne5 f4 21. Ne4 Rc7 22. Rac1 Nc6 23. Nxc6 Bxc6 24. Nd6 Bxg2 25. Kxg2 fxg3 26. hxg3 Rxc1 27. Qxc1 Qd7 28. Ne4 Qd5 29. f3 g5 30. b3 Nf6 31. Nxf6+ Rxf6 32. Qc4 Qa5 33. b4 Qa3 34. d5 Qe3 35. d6 Rf8 36. d7 Rd8 37. Rd4 Kf7 38. Re4 1-0

[Event "World U20-ch19"]
[Site "Dortmund"]
[Date "1980.08.21"]
[Round "5"]
[White "Obando, Arnoldo"]
[Black "Tavares, Shawn P"]
[Result "0-1"]
[ECO "B98"]
[PlyCount "68"]
[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 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. Qe2 Be7 8. f4 h6 9. Bxf6 Bxf6 10. 0-0-0 Qa5 11. Kb1 Nc6 12. Nxc6 bxc6 13. e5 dxe5 14. Ne4 Be7 15. Qh5 0-0 16. Qxe5 c5 17. Be2 f5 18. Nd6 Bf6 19. Qe3 Rb8 20. Nc4 Qc7 21. Ne5 Rb4 22. Bf3 a5 23. c3 Rb5 24. Be2 Rb8 25. Rd2 Bb7 26. Nd7 Be4+ 27. Ka1 Bd4 28. cxd4 Qxd7 29. dxc5 Qa4 30. Bf3 Rb4 31. g3 Rfb8 32. Rhd1 Rb3 33. Rd3 Rxd3 34. Rxd3 Qc2 0-1

[Event "World U20-ch19"]
[Site "Dortmund"]
[Date "1980.08.20"]
[Round "4"]
[White "Obando, Arnoldo"]
[Black "Stigar, Petter"]
[Result "1/2-1/2"]
[ECO "C02"]
[PlyCount "40"]
[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 Nc6 3. d4 cxd4 4. c3 e6 5. cxd4 d5 6. e5 Nge7 7. Na3 Nf5 8. Nc2 Qb6 9. Bd3 Bb4+ 10. Bd2 Be7 11. 0-0 Bd7 12. Bc3 h5 13. Qd2 a5 14. Bxf5 exf5 15. Qf4 Be6 16. a4 Kd7 17. h4 g6 18. Na3 Ra6 19. Rfc1 Rc8 20. Rd1 Na7 1/2-1/2

[Event "World U20-ch19"]
[Site "Dortmund"]
[Date "1980.08.19"]
[Round "3"]
[White "Shrentzel, Mordechai"]
[Black "Obando, Arnoldo"]
[Result "1-0"]
[ECO "C45"]
[PlyCount "107"]
[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. Nf3 Nc6 3. d4 exd4 4. Nxd4 Bc5 5. Be3 Qf6 6. c3 Nge7 7. g3 d5 8. Bg2 dxe4 9. Nd2 Bxd4 10. cxd4 0-0 11. Nxe4 Qg6 12. 0-0 Rd8 13. Rc1 Nd5 14. Nc5 Nce7 15. Nd3 Be6 16. Ne5 Qf6 17. Qh5 g6 18. Qe2 h5 19. Rcd1 Qg7 20. h3 f6 21. Nd3 Bf7 22. Nc5 b6 23. Ne4 a5 24. a3 Rac8 25. Qf3 Nf5 26. Rfe1 Rd7 27. Bf1 Ndxe3 28. fxe3 Bd5 29. g4 Re8 30. Bd3 Qe7 31. gxf5 Bxe4 32. Bxe4 Qxe4 33. Qxe4 Rxe4 34. fxg6 Kg7 35. Kf2 Kxg6 36. Rc1 Kf5 37. Rc6 Rg7 38. Rf1 Rh4 39. Ke2+ Ke4 40. Re6+ Kd5 41. Rexf6 Kc4 42. Rc6+ Kb3 43. Rc3+ Kxb2 44. Kd3 Rxh3 45. Rf2+ Kb1 46. Rcc2 Rh1 47. Rb2+ Ka1 48. Ra2+ Kb1 49. Rfb2+ Kc1 50. Re2 Kb1 51. a4 h4 52. Rab2+ Ka1 53. Kc3 Rc1+ 54. Kb3 1-0

[Event "World U20-ch19"]
[Site "Dortmund"]
[Date "1980.08.18"]
[Round "2"]
[White "Obando, Arnoldo"]
[Black "Toro Sanchez, Bernardo"]
[Result "0-1"]
[ECO "C00"]
[BlackElo "2320"]
[PlyCount "92"]
[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. g3 b6 5. Bg2 Bb7 6. Qe2 Be7 7. Ngf3 0-0 8. 0-0 c5 9. Rd1 Nc6 10. h3 Qd7 11. Nf1 Rad8 12. Bf4 Qc8 13. c3 dxe4 14. dxe4 Rxd1 15. Rxd1 Rd8 16. Rxd8+ Qxd8 17. g4 h6 18. Ng3 Nd7 19. Qd2 Nf8 20. Qxd8 Bxd8 21. Bf1 Ng6 22. Bd6 Bf6 23. Nh5 Be7 24. Bxe7 Ncxe7 25. Nd2 Kf8 26. f4 f5 27. Bc4 fxe4 28. Bxe6 Nd5 29. Bxd5 Bxd5 30. Kf2 Bxa2 31. c4 Ne7 32. Ke3 Nc6 33. Kxe4 Na5 34. Kd3 Bb3 35. Ng3 Ba4 36. Ke4 Kf7 37. Kd5 Bb3 38. Nge4 Ke7 39. Nxb3 Nxb3 40. Kc6 Na5+ 41. Kb5 Kd7 42. Nd2 Nc6 43. Nf3 Nd4+ 44. Ka6 Nxf3 45. Kxa7 Kc7 46. Ka6 Kc6 0-1

[Event "World U20-ch19"]
[Site "Dortmund"]
[Date "1980.08.17"]
[Round "1"]
[White "Barua, Dibyendu"]
[Black "Obando, Arnoldo"]
[Result "0-1"]
[ECO "C53"]
[PlyCount "80"]
[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. Nf3 Nc6 3. Bc4 Bc5 4. c3 Bb6 5. d4 Qe7 6. 0-0 d6 7. h3 Nf6 8. Re1 h6 9. a4 a5 10. Na3 0-0 11. d5 Nb8 12. Nc2 Nbd7 13. b4 Rd8 14. Nh4 Nf8 15. Be3 Nxe4 16. Bxb6 Qxh4 17. Qd3 cxb6 18. Rxe4 Qg5 19. Re2 Ng6 20. Qg3 Nf4 21. Re3 Bf5 22. Na3 axb4 23. cxb4 Rxa4 24. Rb3 Rda8 25. h4 Qf6 26. Re1 Ng6 27. Bb5 R4a7 28. Nc4 Ra1 29. Rbe3 Qd8 30. h5 Nf4 31. Qf3 Nd3 32. Qxf5 Nxe1 33. Kh2 Rc1 34. Nd2 Qh4+ 35. Rh3 Qxb4 36. Ne4 Qxb5 37. Rg3 Qf1 38. Nf6+ Kf8 39. Nh7+ Ke7 40. Rxg7 Qh1+ 0-1

