[Event "WchT U26 08th"]
[Site "Maringa"]
[Date "1991.09.11"]
[Round "9"]
[White "Costa, Jean Luc"]
[Black "Orellana, M."]
[Result "1-0"]
[ECO "E90"]
[WhiteElo "2410"]
[PlyCount "73"]
[EventDate "1991.09.01"]
[EventType "team-swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]
[WhiteTeam "Switzerland"]
[BlackTeam "Ecuador"]
[WhiteTeamCountry "SUI"]
[BlackTeamCountry "ECU"]

1. d4 g6 2. c4 Bg7 3. Nf3 Nf6 4. Nc3 0-0 5. e4 d6 6. h3 e5 7. d5 Nbd7 8. Bg5 h6 9. Be3 Re8 10. Nd2 Nh5 11. g3 b6 12. Be2 Nhf6 13. h4 a5 14. h5 g5 15. g4 Nc5 16. f3 Bd7 17. b3 Qb8 18. a3 Qb7 19. Kf2 Ra6 20. Qc2 Rea8 21. Ra2 c6 22. Rha1 Bf8 23. b4 axb4 24. axb4 Rxa2 25. Rxa2 cxd5 26. Rxa8 Qxa8 27. cxd5 Na6 28. Qa2 Nc7 29. Bxb6 Qxa2 30. Nxa2 Nb5 31. Bd8 Ne8 32. Bxb5 Bxb5 33. Nc3 Ba6 34. b5 Bc8 35. Nc4 f6 36. Na5 Kf7 37. b6 1-0

[Event "WchT U26 08th"]
[Site "Maringa"]
[Date "1991.09.09"]
[Round "8"]
[White "Orellana, M."]
[Black "Ribeiro, Fernando"]
[Result "0-1"]
[ECO "E62"]
[BlackElo "2245"]
[PlyCount "88"]
[EventDate "1991.09.01"]
[EventType "team-swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]
[WhiteTeam "Ecuador"]
[BlackTeam "Portugal"]
[WhiteTeamCountry "ECU"]
[BlackTeamCountry "POR"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. g3 0-0 5. Bg2 d6 6. Nf3 c6 7. 0-0 Qa5 8. Bd2 Qh5 9. Qb3 Nbd7 10. e4 e5 11. dxe5 Nxe5 12. Nxe5 dxe5 13. f3 Bh6 14. Rad1 Nd7 15. Na4 Re8 16. Bb4 Bf8 17. Bxf8 Nxf8 18. Qa3 Ne6 19. Nb6 axb6 20. Qxa8 Nd4 21. Kf2 f5 22. exf5 gxf5 23. Qb8 f4 24. Rfe1 Nxf3 25. Re2 Nxh2 26. gxf4 Qxe2+ 27. Kxe2 Bg4+ 28. Ke3 Rxb8 29. Rh1 exf4+ 30. Kxf4 Rf8+ 31. Kg3 Be6 32. Rxh2 Bxc4 33. Be4 Bxa2 34. Bxh7+ Kg7 35. Be4 Rf7 36. Kg4 Kf8 37. Re2 Bc4 38. Rd2 Ke7 39. Bg6 Rg7 40. Kh5 Bf7 41. Re2+ Kd6 42. Bxf7 Rxf7 43. Kg6 Rf3 44. Kg5 b5 0-1

[Event "WchT U26 08th"]
[Site "Maringa"]
[Date "1991.09.08"]
[Round "7"]
[White "Orellana, M."]
[Black "Sousa, Armindo"]
[Result "0-1"]
[ECO "E83"]
[BlackElo "2205"]
[PlyCount "60"]
[EventDate "1991.09.01"]
[EventType "team-swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]
[WhiteTeam "Ecuador"]
[BlackTeam "Angola"]
[WhiteTeamCountry "ECU"]
[BlackTeamCountry "ANG"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 0-0 6. Be3 e5 7. Bd3 Nc6 8. d5 Ne7 9. Nge2 Ne8 10. Qd2 f5 11. c5 Nf6 12. h3 Kh8 13. g4 f4 14. Bf2 Rf7 15. b4 Nd7 16. 0-0 Nf6 17. Rfc1 Neg8 18. Rc2 h5 19. Rac1 hxg4 20. hxg4 Bxg4 21. Kg2 Bh5 22. cxd6 cxd6 23. Nb5 Ne8 24. Ng1 a6 25. Na7 Ngf6 26. Nh3 Bh6 27. b5 Bxf3+ 28. Kg1 Qd7 29. Bf1 Qg4+ 30. Kh2 Rxa7 0-1

[Event "WchT U26 08th"]
[Site "Maringa"]
[Date "1991.09.06"]
[Round "6"]
[White "Cueto Chajtur, Johny"]
[Black "Orellana, M."]
[Result "1-0"]
[ECO "C41"]
[PlyCount "61"]
[EventDate "1991.09.01"]
[EventType "team-swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]
[WhiteTeam "Bolivia"]
[BlackTeam "Ecuador"]
[WhiteTeamCountry "BOL"]
[BlackTeamCountry "ECU"]

1. e4 e5 2. Nf3 Nc6 3. d4 d6 4. dxe5 Nxe5 5. Nxe5 dxe5 6. Qxd8+ Kxd8 7. Bc4 f6 8. Be3 c6 9. Nc3 Bb4 10. 0-0-0+ Kc7 11. Rd3 Ne7 12. a3 Bxc3 13. Rxc3 b6 14. f4 h6 15. fxe5 f5 16. e6 g5 17. Bd4 Re8 18. Be5+ Kb7 19. exf5 Nxf5 20. Rf1 b5 21. Bb3 Ne7 22. Rf7 Kb6 23. Bf6 Nf5 24. g4 Nd6 25. Bd4+ Ka5 26. Rxc6 Nxf7 27. exf7 Re1+ 28. Kd2 Rf1 29. Bc3+ b4 30. Bxb4+ Kb5 31. Rxh6 1-0

[Event "WchT U26 08th"]
[Site "Maringa"]
[Date "1991.09.05"]
[Round "5"]
[White "Orellana, M."]
[Black "Sepulveda, Luis"]
[Result "1-0"]
[ECO "A39"]
[BlackElo "2280"]
[PlyCount "91"]
[EventDate "1991.09.01"]
[EventType "team-swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]
[WhiteTeam "Ecuador"]
[BlackTeam "Chile"]
[WhiteTeamCountry "ECU"]
[BlackTeamCountry "CHI"]

1. d4 g6 2. c4 Bg7 3. Nc3 c5 4. Nf3 cxd4 5. Nxd4 Nc6 6. e3 Nf6 7. g3 0-0 8. Bg2 a6 9. 0-0 Qc7 10. b3 d6 11. Bb2 Bd7 12. Rc1 Nxd4 13. Qxd4 Bc6 14. Nd5 Qd8 15. Rfd1 Rc8 16. Ba1 Nh5 17. Qb6 Bxd5 18. Qxd8 Rfxd8 19. Bxd5 Bxa1 20. Rxa1 Rc7 21. Rac1 a5 22. c5 Rdc8 23. Rd2 Nf6 24. Rcd1 dxc5 25. Bc4 e6 26. f3 Kf8 27. e4 e5 28. Kf2 Ke7 29. Bb5 Rb8 30. a4 Rcc8 31. Bc4 b6 32. Ke3 Rc7 33. f4 exf4+ 34. gxf4 Rbb7 35. Ba6 Ra7 36. Bb5 Ne8 37. Rd8 Ng7 38. Rh8 Ne6 39. e5 Ng7 40. Rdd8 f6 41. Ke4 fxe5 42. fxe5 g5 43. Rdg8 Kf7 44. Rf8+ Ke7 45. Bc4 Ne6 46. Re8+ 1-0

[Event "WchT U26 08th"]
[Site "Maringa"]
[Date "1991.09.04"]
[Round "4"]
[White "Russek Libni, Guil"]
[Black "Orellana, M."]
[Result "1-0"]
[ECO "C62"]
[WhiteElo "2385"]
[PlyCount "59"]
[EventDate "1991.09.01"]
[EventType "team-swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]
[WhiteTeam "Mexico"]
[BlackTeam "Ecuador"]
[WhiteTeamCountry "MEX"]
[BlackTeamCountry "ECU"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. d4 exd4 5. 0-0 d6 6. Nxd4 Bd7 7. Bxc6 bxc6 8. Re1 Be7 9. b3 0-0 10. Bb2 Re8 11. Nd2 Bf8 12. Qf3 c5 13. Nf5 Re6 14. Qg3 Ne8 15. h4 Rg6 16. Qh3 Nf6 17. h5 Rg5 18. f4 Rxf5 19. exf5 Nd5 20. Ne4 Qc8 21. Qg3 Bxf5 22. h6 Bg6 23. c4 Nb4 24. Bxg7 Bxg7 25. hxg7 Qf5 26. Qc3 Nc6 27. Nf6+ Kxg7 28. Ne8+ Kh6 29. Qg7+ Kh5 30. Nf6+ 1-0

[Event "WchT U26 08th"]
[Site "Maringa"]
[Date "1991.09.02"]
[Round "2"]
[White "Orellana, M."]
[Black "Peralta, Eduardo"]
[Result "0-1"]
[ECO "E91"]
[BlackElo "2215"]
[PlyCount "104"]
[EventDate "1991.09.01"]
[EventType "team-swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]
[WhiteTeam "Ecuador"]
[BlackTeam "Paraguay"]
[WhiteTeamCountry "ECU"]
[BlackTeamCountry "PAR"]

1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. Nc3 0-0 5. e4 d6 6. Be2 c5 7. 0-0 Nc6 8. Be3 Ng4 9. a3 Nxe3 10. fxe3 Bh6 11. Qd3 Bg4 12. Nd2 Bd7 13. Nd5 Bg7 14. Nf3 Bg4 15. e5 cxd4 16. exd4 Bxf3 17. Bxf3 dxe5 18. dxe5 e6 19. Nf4 Nxe5 20. Qxd8 Rfxd8 21. Be2 Rd2 22. Rfd1 Rxb2 23. Bf1 b6 24. Nd3 Nxd3 25. Rxd3 Rc8 26. Rad1 Bf8 27. Rd7 a5 28. R1d3 Bc5+ 29. Kh1 Rb1 30. Rf3 f5 31. g4 Ra1 32. Kg2 Rxa3 33. Bd3 a4 34. Rh3 fxg4 35. Rhxh7 Rxd3 36. Rdg7+ Kf8 37. Ra7 Rh3 38. Rhf7+ Ke8 39. Rg7 a3 40. Rxg6 Re3 41. Rg8+ Bf8 42. Rxg4 Rd8 43. Kf2 Rh3 44. Re4 Rxh2+ 45. Kg3 Rh6 46. Kg4 Be7 47. Kf3 Rd2 48. Rg4 Rh3+ 49. Ke4 Re2+ 50. Kf4 a2 51. Rg8+ Kf7 52. Rb8 Ra3 0-1

[Event "WchT U26 08th"]
[Site "Maringa"]
[Date "1991.09.01"]
[Round "1"]
[White "David, Alberto"]
[Black "Orellana, M."]
[Result "1-0"]
[ECO "A07"]
[WhiteElo "2315"]
[PlyCount "75"]
[EventDate "1991.09.01"]
[EventType "team-swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]
[WhiteTeam "Luxembourg"]
[BlackTeam "Ecuador"]
[WhiteTeamCountry "LUX"]
[BlackTeamCountry "ECU"]

1. d3 d5 2. Nf3 g6 3. g3 Bg7 4. Bg2 Nf6 5. 0-0 0-0 6. Nbd2 Re8 7. e4 e5 8. exd5 Nxd5 9. Re1 Nc6 10. c3 Nb6 11. Ne4 Bf5 12. a4 a5 13. Qc2 Qe7 14. Bg5 f6 15. Be3 Nd7 16. Qb3+ Qe6 17. Nfd2 Bf8 18. Qxb7 Rab8 19. Nxf6+ Nxf6 20. Qxc6 Qxc6 21. Bxc6 Red8 22. Nc4 Bxd3 23. Nxe5 Bc2 24. Bb5 Rd6 25. Nc4 Rd5 26. Nxa5 Rh5 27. Bd4 Rbxb5 28. axb5 Ng4 29. h4 g5 30. f3 Nh6 31. g4 Nxg4 32. fxg4 Rxh4 33. Re3 Bd6 34. Nc6 Rxg4+ 35. Kf2 Kf7 36. Rg1 Rh4 37. Rxg5 Bf4 38. Nd8+ 1-0

