[Event "CHI-ch"]
[Site "Vina del Mar"]
[Date "1997.??.??"]
[Round "14"]
[White "Correa Jaramillo, Jaime"]
[Black "Rivera, Guillermo"]
[Result "0-1"]
[ECO "E87"]
[WhiteElo "2250"]
[BlackElo "2135"]
[PlyCount "111"]
[EventDate "1997.03.17"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "CHI"]
[SourceTitle "CBM 058 Extra"]
[Source "ChessBase"]
[SourceDate "1997.07.29"]
[SourceVersion "1"]
[SourceVersionDate "1997.07.29"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 0-0 6. Be3 e5 7. d5 Nh5 8. Qd2 f5 9. 0-0-0 a6 10. Kb1 Nd7 11. Bd3 Nc5 12. Bc2 Rf7 13. Nge2 Qe8 14. Nc1 b5 15. Nd3 Nxd3 16. Bxd3 Rb8 17. Rc1 Nf4 18. Rhe1 b4 19. Nd1 a5 20. Bf1 Bd7 21. Ka1 Nh5 22. h3 Qe7 23. c5 Rbf8 24. cxd6 cxd6 25. Bg5 Qe8 26. Bd3 fxe4 27. Bxe4 Bb5 28. Ne3 Qb8 29. Nc4 Bxc4 30. Rxc4 Rc8 31. Rc6 Nf6 32. Rec1 Rfc7 33. Qd3 Nxe4 34. fxe4 h6 35. Be3 Rxc6 36. dxc6 Qc7 37. Qa6 Rb8 38. Ba7 Ra8 39. Qb7 Rxa7 40. Qxa7 Qxa7 41. c7 Kh7 42. c8Q Qe3 43. Qc2 a4 44. Rd1 b3 45. Qd3 Qf2 46. axb3 axb3 47. Qxb3 Qxg2 48. Qe3 d5 49. Rxd5 Qf1+ 50. Ka2 Qc4+ 51. Kb1 Qf1+ 52. Kc2 Qc4+ 53. Kd1 Qf1+ 54. Kd2 Qg2+ 55. Kc3 h5 56. Rd7 0-1

[Event "Pan American-ch U26"]
[Site "Buenos Aires"]
[Date "1997.??.??"]
[Round "10"]
[White "Esplana, Bernardo"]
[Black "Rivera, Guillermo"]
[Result "1/2-1/2"]
[ECO "B88"]
[BlackElo "2135"]
[PlyCount "83"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "ARG"]
[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 a6 6. Bc4 e6 7. Bb3 Be7 8. 0-0 Nc6 9. Be3 0-0 10. f4 Nxd4 11. Bxd4 b5 12. a3 Bb7 13. Qf3 Nd7 14. f5 exf5 15. Qxf5 Bf6 16. Bxf6 Nxf6 17. Rad1 Qe7 18. Nd5 Nxd5 19. Bxd5 Bxd5 20. Rxd5 Rac8 21. c3 Rc4 22. e5 dxe5 23. Rxe5 Qa7+ 24. Qf2 Qc7 25. Qe3 Qd6 26. Re8 Rc8 27. Rxf8+ Kxf8 28. Qh3 Qc5+ 29. Kh1 Kg8 30. Qd7 Rf8 31. Qb7 Qc4 32. Kg1 Qe2 33. Rf2 Qe1+ 34. Rf1 Qe3+ 35. Kh1 Qe2 36. Kg1 Qxb2 37. Qxa6 Qxc3 38. Qxb5 Qxa3 39. h3 Qe3+ 40. Kh2 Qe6 41. Qf5 Qd6+ 42. Qf4 1/2-1/2

[Event "CHI-ch"]
[Site "Vina del Mar"]
[Date "1997.??.??"]
[Round "1"]
[White "Frey Perez, Hugo"]
[Black "Rivera, Guillermo"]
[Result "1-0"]
[ECO "E69"]
[WhiteElo "2235"]
[BlackElo "2135"]
[PlyCount "83"]
[EventDate "1997.03.17"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "CHI"]
[SourceTitle "CBM 058 Extra"]
[Source "ChessBase"]
[SourceDate "1997.07.29"]
[SourceVersion "1"]
[SourceVersionDate "1997.07.29"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 g6 3. g3 Bg7 4. Bg2 d6 5. d4 0-0 6. Nf3 Nbd7 7. 0-0 e5 8. e4 c6 9. h3 Re8 10. Be3 Qc7 11. Re1 b6 12. Rc1 Ba6 13. d5 c5 14. Nd2 Nf8 15. f4 Nh5 16. Kh2 exf4 17. gxf4 Qe7 18. Bf3 Qh4 19. Bxh5 gxh5 20. Nf3 Qe7 21. Rg1 Kh8 22. Rc2 Nd7 23. Rcg2 Rg8 24. Qd3 Bh6 25. Ng5 Bxg5 26. Rxg5 Rxg5 27. Rxg5 Rg8 28. Rxg8+ Kxg8 29. b3 Nf6 30. Bc1 Kf8 31. Bb2 Bc8 32. Qe3 Bf5 33. e5 h4 34. Qe2 Nd7 35. Nb5 dxe5 36. fxe5 Qg5 37. Qf2 Bg6 38. e6 Ne5 39. d6 Nf3+ 40. Qxf3 Qd2+ 41. Qg2 Qf4+ 42. Kg1 1-0

[Event "CHI-ch"]
[Site "Vina del Mar"]
[Date "1997.??.??"]
[Round "12"]
[White "Lobos Barrenechea, Miguel"]
[Black "Rivera, Guillermo"]
[Result "1/2-1/2"]
[ECO "D03"]
[WhiteElo "2075"]
[BlackElo "2135"]
[PlyCount "85"]
[EventDate "1997.03.17"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "CHI"]
[SourceTitle "CBM 058 Extra"]
[Source "ChessBase"]
[SourceDate "1997.07.29"]
[SourceVersion "1"]
[SourceVersionDate "1997.07.29"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. Bg5 Bg7 4. Nbd2 d5 5. e3 0-0 6. Bd3 Nbd7 7. 0-0 c5 8. c4 cxd4 9. exd4 dxc4 10. Nxc4 Nb6 11. Re1 Nbd5 12. Rc1 Be6 13. Qd2 Rc8 14. a3 b5 15. Na5 Qb6 16. b4 Rfd8 17. Nb3 Nd7 18. Rxc8 Rxc8 19. Nc5 Nxc5 20. dxc5 Qa6 21. Qc1 Rd8 22. Be4 Nf6 23. Bc2 Nd5 24. Bb3 Qc6 25. Bxd5 Rxd5 26. Bxe7 Rd3 27. Rd1 Qd5 28. Rxd3 Qxd3 29. h4 Bd5 30. Qe3 Qxe3 31. fxe3 Bb2 32. Nd4 Bxd4 33. exd4 f5 34. Kf2 Kf7 35. Bd6 Ke6 36. g3 h5 37. Ke3 Bc6 38. Kf4 a6 39. Bc7 Bd5 40. Kg5 Kf7 41. Bb6 Bc6 42. Kf4 Ke6 43. Bc7 1/2-1/2

[Event "Pan American-ch U26"]
[Site "Buenos Aires"]
[Date "1997.??.??"]
[Round "9"]
[White "Raineri de Luca, Pablo"]
[Black "Rivera, Guillermo"]
[Result "1/2-1/2"]
[ECO "E76"]
[WhiteElo "2095"]
[BlackElo "2135"]
[PlyCount "76"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "ARG"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f4 0-0 6. Nf3 Na6 7. Be2 e5 8. dxe5 dxe5 9. Nxe5 Nc5 10. Qxd8 Rxd8 11. Bf3 Nfd7 12. Nxd7 Nd3+ 13. Ke2 Nxc1+ 14. Raxc1 Bxd7 15. b3 a5 16. Rhd1 c6 17. Na4 Be6 18. Nc5 Rxd1 19. Rxd1 a4 20. Nxe6 fxe6 21. Rd7 axb3 22. axb3 e5 23. f5 Ra2+ 24. Kd3 Ra7 25. fxg6 hxg6 26. Rc7 Bf8 27. Bg4 Bb4 28. Bc8 Ra3 29. Be6+ Kf8 30. c5 Bxc5 31. Rxb7 Be7 32. Rc7 c5 33. Kc4 Ra2 34. Bh3 Rd2 35. Rc6 Rd4+ 36. Kc3 Kg7 37. Rc7 Kf6 38. Rc6+ Kg7 1/2-1/2

[Event "Pan American-ch U26"]
[Site "Buenos Aires"]
[Date "1997.??.??"]
[Round "6"]
[White "Rioseco Pinochet, Fernando Luis"]
[Black "Rivera, Guillermo"]
[Result "1-0"]
[ECO "B22"]
[WhiteElo "2226"]
[BlackElo "2135"]
[PlyCount "95"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "ARG"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 Nf6 5. Nf3 Bg4 6. Be2 e6 7. 0-0 Be7 8. h3 Bh5 9. Be3 cxd4 10. cxd4 0-0 11. Nc3 Qd6 12. Ne5 Bxe2 13. Qxe2 a6 14. Nc4 Qd8 15. d5 b5 16. Nb6 Ra7 17. Rfd1 Rb7 18. dxe6 Qc7 19. Rac1 Nc6 20. exf7+ Rxf7 21. Nxb5 axb5 22. Qxb5 Qe5 23. Qxc6 Bf8 24. Nc4 Qb8 25. Qe6 Rbe7 26. Qb6 Rb7 27. Qd8 h6 28. b3 Kh7 29. Qxb8 Rxb8 30. Ne5 Rfb7 31. Nc6 Ra8 32. Rd8 Rxd8 33. Nxd8 Rd7 34. Ne6 Ba3 35. g3 Ne4 36. Rc4 Rd1+ 37. Kg2 Nf6 38. Rc7 Ne8 39. Ra7 Bb2 40. Re7 Nd6 41. Rd7 Be5 42. Bf4 Bxf4 43. gxf4 Rd2 44. a4 Kg6 45. a5 Kf6 46. Nc5 g6 47. Rxd6+ Ke7 48. Rxd2 1-0

[Event "CHI-ch"]
[Site "Vina del Mar"]
[Date "1997.??.??"]
[Round "4"]
[White "Rivera, Guillermo"]
[Black "Carmona Rosales, Jose Luis"]
[Result "0-1"]
[ECO "A10"]
[WhiteElo "2135"]
[BlackElo "2165"]
[PlyCount "88"]
[EventDate "1997.03.17"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "CHI"]
[SourceTitle "CBM 058 Extra"]
[Source "ChessBase"]
[SourceDate "1997.07.29"]
[SourceVersion "1"]
[SourceVersionDate "1997.07.29"]
[SourceQuality "1"]

1. c4 f5 2. g3 Nf6 3. d3 e6 4. Bg2 d5 5. cxd5 exd5 6. Nf3 c6 7. 0-0 Be7 8. Nbd2 0-0 9. Qc2 Na6 10. a3 Nc7 11. e4 fxe4 12. dxe4 dxe4 13. Nxe4 Nxe4 14. Qxe4 Bf5 15. Qc4+ Be6 16. Qc2 Bd5 17. Rd1 Qc8 18. Ng5 Bxg5 19. Bxg5 Bxg2 20. Kxg2 Nd5 21. Rd4 Qe6 22. Qe4 Rfe8 23. Qxe6+ Rxe6 24. Bd2 Re2 25. Rf1 h6 26. Rd3 Rae8 27. Bc3 Ne3+ 28. Kg1 Nxf1 29. Kxf1 R2e7 30. Rd6 c5 31. Rd5 b6 32. Rd6 Kf7 33. h3 Rc8 34. Kg2 Rcc7 35. Rd5 Rcd7 36. Rf5+ Ke6 37. Rf8 Kd5 38. Rc8 Kc4 39. Rf8 Rd3 40. Rf5 Kb3 41. h4 Rxc3 42. bxc3 Kxc3 43. Rf3+ Kb2 44. g4 c4 0-1

[Event "Pan American-ch U26"]
[Site "Buenos Aires"]
[Date "1997.??.??"]
[Round "3"]
[White "Rivera, Guillermo"]
[Black "Clavijo Hidalgo, Walter"]
[Result "0-1"]
[ECO "E69"]
[WhiteElo "2135"]
[PlyCount "66"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "ARG"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 g6 3. Nf3 Bg7 4. g3 0-0 5. Bg2 d6 6. 0-0 c6 7. d4 Qa5 8. e4 e5 9. h3 Nbd7 10. Be3 exd4 11. Nxd4 Nb6 12. Qd3 Qa6 13. b3 d5 14. Rfd1 dxc4 15. Qd2 Qa3 16. Nc2 Qe7 17. Bxb6 axb6 18. bxc4 Be6 19. Ne3 Nd7 20. Rac1 Ne5 21. Ne2 Bxh3 22. f4 Bxg2 23. Kxg2 Rfd8 24. Qc2 Nd7 25. Rd2 Nc5 26. Rxd8+ Rxd8 27. Kf3 Re8 28. e5 f6 29. Ng4 fxe5 30. Nxe5 Bxe5 31. fxe5 Qxe5 32. Nf4 Qe3+ 33. Kg2 Ne4 0-1

[Event "Pan American-ch U26"]
[Site "Buenos Aires"]
[Date "1997.??.??"]
[Round "8"]
[White "Rivera, Guillermo"]
[Black "Della Morte, Pablo"]
[Result "0-1"]
[ECO "A34"]
[WhiteElo "2135"]
[PlyCount "98"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "ARG"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. c4 g6 2. Nc3 Bg7 3. e4 c5 4. Nge2 Nc6 5. d3 d6 6. g3 Bg4 7. Bg2 Nd4 8. 0-0 Qc8 9. f3 Bd7 10. Be3 h5 11. h4 e6 12. Qd2 Ne7 13. Kh2 a6 14. Bf4 Qc7 15. Rab1 b5 16. cxb5 axb5 17. b4 cxb4 18. Rxb4 Qc5 19. Rbb1 b4 20. Nd1 Nc2 21. d4 Nxd4 22. Nxd4 Bxd4 23. Rxb4 Nc6 24. Rb7 Na5 25. Rb1 Nc4 26. Qc2 0-0 27. Re1 Ba4 28. Qe2 Bb5 29. Bf1 Ba6 30. Qg2 Qa5 31. Ne3 Nd2 32. Rbd1 Nxf1+ 33. Nxf1 e5 34. Be3 Bxf1 35. Qxf1 Qxa2+ 36. Rd2 Qb3 37. Bxd4 exd4 38. Red1 Ra4 39. Qf2 Rc8 40. Rxd4 Ra2 41. R1d2 Ra1 42. Rb2 Qe6 43. f4 Rcc1 44. f5 gxf5 45. Rb8+ Kh7 46. exf5 Rh1+ 47. Kg2 Rag1+ 48. Kf3 Qxf5+ 49. Rf4 Qd3+ 0-1

[Event "CHI-ch"]
[Site "Vina del Mar"]
[Date "1997.??.??"]
[Round "2"]
[White "Rivera, Guillermo"]
[Black "Egger Mancilla, Jorge Alejandro"]
[Result "0-1"]
[ECO "E92"]
[WhiteElo "2135"]
[BlackElo "2410"]
[PlyCount "68"]
[EventDate "1997.03.17"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "CHI"]
[SourceTitle "CBM 058 Extra"]
[Source "ChessBase"]
[SourceDate "1997.07.29"]
[SourceVersion "1"]
[SourceVersionDate "1997.07.29"]
[SourceQuality "1"]

1. c4 g6 2. Nc3 Bg7 3. Nf3 d6 4. d4 Nf6 5. e4 0-0 6. Be2 e5 7. dxe5 dxe5 8. Qxd8 Rxd8 9. Bg5 c6 10. Nxe5 Re8 11. 0-0-0 Na6 12. Rd6 Be6 13. f4 Nc5 14. Bxf6 Bxf6 15. Rhd1 Bxe5 16. fxe5 a5 17. R1d4 Kf8 18. Kd2 Ke7 19. Ke3 a4 20. Bd1 Ra6 21. Ne2 Rb6 22. Rd2 Bxc4 23. Rc2 Bxe2 24. Rxe2 Rb4 25. Rd4 Rxd4 26. Kxd4 b6 27. Kc3 Ke6 28. Bc2 Kxe5 29. Rf2 f6 30. Rd2 b5 31. b4 axb3 32. axb3 Ra8 33. b4 Nxe4+ 34. Bxe4 Kxe4 0-1

[Event "CHI-ch"]
[Site "Vina del Mar"]
[Date "1997.??.??"]
[Round "15"]
[White "Rivera, Guillermo"]
[Black "Farias Garrido, Luis"]
[Result "1/2-1/2"]
[ECO "A10"]
[WhiteElo "2135"]
[BlackElo "2215"]
[PlyCount "110"]
[EventDate "1997.03.17"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "CHI"]
[SourceTitle "CBM 058 Extra"]
[Source "ChessBase"]
[SourceDate "1997.07.29"]
[SourceVersion "1"]
[SourceVersionDate "1997.07.29"]
[SourceQuality "1"]

1. c4 f5 2. Nf3 Nf6 3. g3 e6 4. Bg2 d5 5. e3 c6 6. cxd5 exd5 7. 0-0 Bd6 8. b3 Qe7 9. Bb2 0-0 10. Nc3 Nbd7 11. Qc2 Nc5 12. d3 a5 13. Rfe1 Bd7 14. a3 Qf7 15. d4 Nce4 16. Ne5 Qh5 17. Nxe4 fxe4 18. Nxd7 Nxd7 19. Qe2 Qf5 20. Bc3 a4 21. Reb1 b5 22. bxa4 Rxa4 23. Bb4 Bxb4 24. axb4 Rfa8 25. Rxa4 Rxa4 26. Qc2 Qe6 27. Qc3 Qd6 28. Bh3 Nb6 29. Bf1 h6 30. Be2 Ra2 31. Bf1 Qf6 32. Qe1 Qf8 33. Ra1 Qa8 34. Rxa2 Qxa2 35. Qd1 Qa7 36. Qh5 Qe7 37. Bh3 Nc4 38. Qg6 Nd6 39. Be6+ Kf8 40. Bh3 Kg8 41. Bg4 Kf8 42. Qh7 Nf7 43. Qf5 Qf6 44. Qc8+ Nd8 45. Bd7 Ke7 46. Bg4 Qd6 47. Qf5 g6 48. Qc8 h5 49. Bh3 Ne6 50. Bxe6 Qxe6 51. Qc7+ Kf6 52. Qf4+ Kg7 53. Qc7+ Kh6 54. Qd8 Kg7 55. Qc7+ Kf6 1/2-1/2

[Event "Pan American-ch U26"]
[Site "Buenos Aires"]
[Date "1997.??.??"]
[Round "11"]
[White "Rivera, Guillermo"]
[Black "Gallardo Soto, Eduardo"]
[Result "0-1"]
[ECO "E92"]
[WhiteElo "2135"]
[BlackElo "2135"]
[PlyCount "94"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "ARG"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. c4 g6 2. Nc3 Bg7 3. d4 Nf6 4. e4 d6 5. Nf3 0-0 6. Be2 e5 7. dxe5 dxe5 8. Qxd8 Rxd8 9. Bg5 Re8 10. Nd5 Nxd5 11. cxd5 c6 12. Bc4 b5 13. Bb3 Bb7 14. Rd1 c5 15. 0-0 Nd7 16. Ne1 a5 17. Bc2 Rec8 18. b3 Ba6 19. f3 Bf8 20. Be3 c4 21. bxc4 Rxc4 22. Bd3 Bc5 23. Bf2 Rc3 24. Be2 f6 25. Nd3 Bxf2+ 26. Rxf2 b4 27. Ne1 Bxe2 28. Rxe2 Rac8 29. Kf2 Kf7 30. Rdd2 Nc5 31. Re3 Na4 32. Rxc3 Rxc3 33. Ke2 Ke7 34. Rd3 Kd6 35. Kd2 f5 36. Nc2 fxe4 37. fxe4 Nc5 38. Re3 Rc4 39. Re2 Rxe4 40. Ne3 a4 41. Rf2 b3 42. axb3 Nxb3+ 43. Kd3 Nc5+ 44. Kd2 a3 45. Rf6+ Ke7 46. Rf1 Nb3+ 47. Kd3 Rxe3+ 0-1

[Event "CHI-ch"]
[Site "Vina del Mar"]
[Date "1997.??.??"]
[Round "13"]
[White "Rivera, Guillermo"]
[Black "Jorquera Cahuin, Marcelo Joaquin"]
[Result "1-0"]
[ECO "A26"]
[WhiteElo "2135"]
[BlackElo "2160"]
[PlyCount "75"]
[EventDate "1997.03.17"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "CHI"]
[SourceTitle "CBM 058 Extra"]
[Source "ChessBase"]
[SourceDate "1997.07.29"]
[SourceVersion "1"]
[SourceVersionDate "1997.07.29"]
[SourceQuality "1"]

1. c4 g6 2. Nc3 Bg7 3. g3 e5 4. Bg2 Nf6 5. d3 d6 6. Nf3 Nc6 7. 0-0 0-0 8. Rb1 a5 9. a3 Nh5 10. b4 axb4 11. axb4 f5 12. Qb3 h6 13. b5 Ne7 14. Bb2 Kh8 15. Nd2 f4 16. Ra1 Rxa1 17. Rxa1 Nf5 18. Nde4 fxg3 19. hxg3 Nf6 20. Nxf6 Qxf6 21. Ne4 Qf7 22. Ra7 h5 23. Bf3 h4 24. g4 Nh6 25. g5 Ng4 26. Bc1 h3 27. Qd1 Qe6 28. Qf1 h2+ 29. Kh1 d5 30. cxd5 Qb6 31. Ra8 Kg8 32. Qg2 Qxb5 33. Bxg4 Qb1 34. Rxc8 Qxc1+ 35. Kxh2 Rxc8 36. Bxc8 b5 37. e3 Qd1 38. Bg4 1-0

[Event "Pan American-ch U26"]
[Site "Buenos Aires"]
[Date "1997.??.??"]
[Round "2"]
[White "Rivera, Guillermo"]
[Black "Larrea, Manuel"]
[Result "0-1"]
[ECO "A26"]
[WhiteElo "2135"]
[PlyCount "152"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "ARG"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 g6 3. Nf3 Bg7 4. g3 0-0 5. Bg2 d6 6. 0-0 e5 7. d3 Nc6 8. a3 Be6 9. Ng5 Bd7 10. Rb1 h6 11. Nf3 Qc8 12. b4 Bh3 13. Qc2 Ne7 14. Bb2 Nh5 15. Nd5 Nxd5 16. cxd5 Bxg2 17. Kxg2 f5 18. e4 fxe4 19. dxe4 Nf4+ 20. Kh1 Qh3 21. Nh4 g5 22. gxf4 gxh4 23. f3 Rxf4 24. Qg2 Qxg2+ 25. Kxg2 Kh7 26. Rbc1 Rf7 27. Rc3 Bf6 28. Bc1 Rg8+ 29. Kh3 Bd8 30. Be3 b6 31. Bf2 Rg5 32. Be3 Rg6 33. Bf2 Rg5 34. a4 Rfg7 35. a5 Rg2 36. axb6 axb6 37. Ra3 R2g6 38. Ra8 Bg5 39. Ra2 Rf7 40. Bxh4 Bxh4 41. Kxh4 Rg5 42. Rc2 Kg6 43. Kh3 Kh5 44. Rg2 Rxg2 45. Kxg2 Kh4 46. Rf2 Rg7+ 47. Kf1 Kh3 48. Rc2 Rf7 49. Rf2 Rf8 50. Ke2 Ra8 51. Kd3 b5 52. Rc2 Ra3+ 53. Ke2 Ra7 54. f4 exf4 55. Kf3 Ra1 56. Kxf4 Rf1+ 57. Ke3 Rf7 58. e5 dxe5 59. Rc6 h5 60. Ke4 h4 61. Kxe5 Kxh2 62. Rg6 h3 63. Kd4 Rf2 64. Rc6 Rf4+ 65. Kc5 Rc4+ 66. Kxb5 Rxc6 67. Kxc6 Kg3 68. Kxc7 h2 69. d6 h1Q 70. d7 Qc1+ 71. Kb7 Qd2 72. Kc8 Qc3+ 73. Kb8 Qxb4+ 74. Kc8 Qc5+ 75. Kb8 Qd6+ 76. Kc8 Qc6+ 0-1

[Event "CHI-ch"]
[Site "Vina del Mar"]
[Date "1997.??.??"]
[Round "11"]
[White "Rivera, Guillermo"]
[Black "Letelier Martner, Rene"]
[Result "1-0"]
[ECO "A30"]
[WhiteElo "2135"]
[BlackElo "2205"]
[PlyCount "69"]
[EventDate "1997.03.17"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "CHI"]
[SourceTitle "CBM 058 Extra"]
[Source "ChessBase"]
[SourceDate "1997.07.29"]
[SourceVersion "1"]
[SourceVersionDate "1997.07.29"]
[SourceQuality "1"]

1. c4 e6 2. Nf3 Nf6 3. g3 b6 4. Bg2 Bb7 5. 0-0 c5 6. b3 Be7 7. Bb2 0-0 8. Nc3 d6 9. d3 a6 10. e4 Nbd7 11. Qe2 Qc7 12. Nd2 Bc6 13. f4 Qb7 14. g4 Rfd8 15. g5 Ne8 16. Qg4 Qc8 17. Rae1 Ra7 18. Nf3 Nf8 19. f5 e5 20. Qg3 Kh8 21. h4 b5 22. h5 f6 23. h6 Rdd7 24. hxg7+ Nxg7 25. Bc1 Bd8 26. Kf2 Rdc7 27. Rh1 b4 28. Nd5 Bxd5 29. cxd5 Qd7 30. Rh6 Nxf5 31. exf5 Qxf5 32. Re4 Rg7 33. Bh3 Qxe4 34. dxe4 fxg5 35. Bf5 1-0

[Event "Pan American-ch U26"]
[Site "Buenos Aires"]
[Date "1997.??.??"]
[Round "7"]
[White "Rivera, Guillermo"]
[Black "Oliva, Daniel Jose"]
[Result "1/2-1/2"]
[ECO "D89"]
[WhiteElo "2135"]
[BlackElo "2045"]
[PlyCount "26"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "ARG"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Bc4 c5 8. Ne2 Nc6 9. Be3 0-0 10. 0-0 Bg4 11. f3 Na5 12. Bd3 cxd4 13. cxd4 Be6 1/2-1/2

[Event "Pan American-ch U26"]
[Site "Buenos Aires"]
[Date "1997.??.??"]
[Round "5"]
[White "Rivera, Guillermo"]
[Black "Retamal, Rodrigo"]
[Result "1/2-1/2"]
[ECO "E92"]
[WhiteElo "2135"]
[PlyCount "56"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "ARG"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 g6 3. e4 d6 4. d4 Bg7 5. Nf3 0-0 6. Be2 e5 7. dxe5 dxe5 8. Qxd8 Rxd8 9. Bg5 Re8 10. Nd5 Nxd5 11. cxd5 c6 12. Bc4 cxd5 13. Bxd5 Nc6 14. Bxc6 bxc6 15. Rc1 Rb8 16. b3 Rb4 17. Nd2 Re6 18. 0-0 Ba6 19. Rfe1 Rd4 20. Be3 Rd7 21. Nc4 Bf8 22. Red1 Rxd1+ 23. Rxd1 Bxc4 24. bxc4 c5 25. Rd5 Ra6 26. Bxc5 Rxa2 27. f3 Bxc5+ 28. Rxc5 f6 1/2-1/2

[Event "CHI-ch"]
[Site "Vina del Mar"]
[Date "1997.??.??"]
[Round "6"]
[White "Rivera, Guillermo"]
[Black "Rioseco Pinochet, Fernando Luis"]
[Result "1-0"]
[ECO "A26"]
[WhiteElo "2135"]
[BlackElo "2226"]
[PlyCount "75"]
[EventDate "1997.03.17"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "CHI"]
[SourceTitle "CBM 058 Extra"]
[Source "ChessBase"]
[SourceDate "1997.07.29"]
[SourceVersion "1"]
[SourceVersionDate "1997.07.29"]
[SourceQuality "1"]

1. c4 g6 2. Nc3 Bg7 3. Nf3 e5 4. g3 Nc6 5. Bg2 Nf6 6. d3 d6 7. 0-0 0-0 8. Rb1 a5 9. a3 h6 10. b4 axb4 11. axb4 Be6 12. h3 Qd7 13. Kh2 Nh5 14. Nd5 f5 15. Ng1 Kh7 16. b5 Bxd5 17. Bxd5 Nd8 18. e3 Nf6 19. Bg2 e4 20. Bb2 Ne6 21. Bxf6 Bxf6 22. dxe4 fxe4 23. Bxe4 Nc5 24. Bc2 Ra2 25. Ne2 Be5 26. Nf4 Bxf4 27. gxf4 Qe6 28. Ra1 Rxa1 29. Qxa1 Qxc4 30. Qb1 Rf6 31. Rg1 Qf7 32. h4 Kg7 33. Rg2 Kf8 34. Bxg6 Qc4 35. Bh5 Qe4 36. Qa1 d5 37. Qa8+ Ke7 38. Rg7+ 1-0

[Event "CHI-ch"]
[Site "Vina del Mar"]
[Date "1997.??.??"]
[Round "8"]
[White "Rivera, Guillermo"]
[Black "Rojas Keim, Luis Alberto"]
[Result "0-1"]
[ECO "A12"]
[WhiteElo "2135"]
[BlackElo "2385"]
[PlyCount "88"]
[EventDate "1997.03.17"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "CHI"]
[SourceTitle "CBM 058 Extra"]
[Source "ChessBase"]
[SourceDate "1997.07.29"]
[SourceVersion "1"]
[SourceVersionDate "1997.07.29"]
[SourceQuality "1"]

1. c4 c6 2. Nf3 d5 3. b3 Nf6 4. Bb2 Bf5 5. e3 Nbd7 6. Be2 e6 7. 0-0 h6 8. Nc3 e5 9. cxd5 cxd5 10. Rc1 a6 11. d4 e4 12. Ne5 Bd6 13. f4 exf3 14. Bxf3 Be6 15. Nxd7 Qxd7 16. e4 Nxe4 17. Nxe4 dxe4 18. Bxe4 0-0 19. d5 Bg4 20. Qd4 f5 21. Bf3 Bxf3 22. Rxf3 Rae8 23. Qd3 Qe7 24. Rcf1 Qe2 25. Qb1 Re4 26. h3 Qd2 27. Rd3 Qg5 28. Bc1 f4 29. Rdf3 Re2 30. g4 Qxd5 31. Qd3 Qxd3 32. Rxd3 Bc5+ 33. Kh1 f3 34. g5 hxg5 35. Bxg5 f2 36. a4 Rf5 37. h4 b6 38. Kg2 Kh7 39. Rc3 a5 40. Rd3 Kg6 41. Rd7 Rb2 42. Rd3 Re5 43. Bc1 Rb1 44. Rg3+ Kh7 0-1

[Event "CHI-ch"]
[Site "Vina del Mar"]
[Date "1997.??.??"]
[Round "9"]
[White "Rosa Valenzuela, Fernando"]
[Black "Rivera, Guillermo"]
[Result "0-1"]
[ECO "B22"]
[WhiteElo "2175"]
[BlackElo "2135"]
[PlyCount "94"]
[EventDate "1997.03.17"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "CHI"]
[SourceTitle "CBM 058 Extra"]
[Source "ChessBase"]
[SourceDate "1997.07.29"]
[SourceVersion "1"]
[SourceVersionDate "1997.07.29"]
[SourceQuality "1"]

1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 Nf6 5. Nf3 Bg4 6. Nbd2 e6 7. Qa4+ Nc6 8. Bb5 cxd4 9. 0-0 dxc3 10. bxc3 Bc5 11. c4 Qd6 12. Bb2 0-0 13. Bxc6 bxc6 14. Rfd1 Qc7 15. Bxf6 gxf6 16. Ne4 Bxf3 17. gxf3 Be7 18. Rd3 f5 19. Ng3 f4 20. Ne4 f5 21. Nc3 Bf6 22. Kh1 Kh8 23. Qc2 Rg8 24. Rg1 Rxg1+ 25. Kxg1 Qg7+ 26. Kf1 Rg8 27. Nd1 e5 28. Rd6 e4 29. fxe4 Be5 30. Re6 f3 31. Ke1 Rd8 32. Ne3 Bc3+ 33. Kf1 f4 34. Re7 Qxe7 35. Qxc3+ Kg8 36. Nd5 cxd5 37. Qxf3 dxe4 38. Qxf4 Rf8 39. Qg3+ Qg7 40. Qe3 Qa1+ 41. Kg2 Qg7+ 42. Kf1 Qe7 43. Qg3+ Kh8 44. Qc3+ Qf6 45. Qe3 Qa1+ 46. Kg2 Rg8+ 47. Kh3 Qe5 0-1

[Event "Pan American-ch U26"]
[Site "Buenos Aires"]
[Date "1997.??.??"]
[Round "1"]
[White "Samame Castillo, Juan Jose"]
[Black "Rivera, Guillermo"]
[Result "1-0"]
[ECO "D03"]
[BlackElo "2135"]
[PlyCount "73"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "ARG"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. Bg5 Bg7 4. Nbd2 d5 5. e3 0-0 6. Bd3 Nbd7 7. c3 h6 8. Bh4 Qe8 9. 0-0 e5 10. Bxf6 Bxf6 11. e4 dxe4 12. Nxe4 Bg7 13. Qb3 Kh8 14. dxe5 Nxe5 15. Nxe5 Qxe5 16. Rae1 c6 17. Qb4 Qc7 18. Ng3 c5 19. Qh4 Qb6 20. Re2 Be6 21. Bb1 c4 22. Rfe1 Rae8 23. Qf4 a5 24. h4 h5 25. Qg5 Bd7 26. Qd2 Rxe2 27. Nxe2 Bg4 28. Nd4 Qf6 29. Be4 Bc8 30. Bd5 Qxh4 31. Bxc4 Qf6 32. Nf3 Bf5 33. Qf4 Qc6 34. Bb3 Re8 35. Rd1 Re4 36. Rd8+ Kh7 37. Ng5+ 1-0

[Event "Pan American-ch U26"]
[Site "Buenos Aires"]
[Date "1997.??.??"]
[Round "4"]
[White "Suasnabar, Jesus"]
[Black "Rivera, Guillermo"]
[Result "1-0"]
[ECO "B53"]
[BlackElo "2135"]
[PlyCount "125"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "ARG"]
[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. Qxd4 Nc6 5. Bb5 Bd7 6. Bxc6 Bxc6 7. Nc3 Nf6 8. Bg5 e6 9. 0-0-0 Be7 10. Qd3 Qa5 11. Rhe1 Rc8 12. Kb1 0-0 13. Bd2 Qc7 14. Nd4 a6 15. f4 Nd7 16. Qg3 Rfd8 17. f5 e5 18. Bh6 g6 19. fxg6 hxg6 20. Ne6 Qa5 21. Nxd8 Qxd8 22. Qf2 Nf6 23. h3 Qe8 24. Bg5 Kg7 25. Bxf6+ Bxf6 26. Rd2 Be7 27. Rd3 Bg5 28. Rf1 Qe6 29. Nd5 Be7 30. Nxe7 Qxe7 31. Re1 Bb5 32. Rdd1 Rc7 33. Rd2 Rc4 34. Qf3 Bc6 35. g4 Qg5 36. Rf2 Qe7 37. g5 Qe8 38. h4 Rd4 39. Qf6+ Kg8 40. Rfe2 Bd7 41. c3 Rc4 42. Rd2 Rc6 43. Qf3 Be6 44. Red1 Rc7 45. Qf6 Bg4 46. Rxd6 Bxd1 47. Rd8 Rc8 48. Kc1 Ba4 49. Rxe8+ Rxe8 50. Kd2 Re6 51. Qd8+ Kg7 52. Qc7 Bc6 53. Ke3 Kf8 54. c4 Re7 55. Qd6 Ke8 56. Qb8+ Kd7 57. c5 Re6 58. b4 f6 59. gxf6 Rxf6 60. Qxe5 Re6 61. Qg7+ Kd8 62. Qf8+ Kd7 63. Qf7+ 1-0

[Event "CHI-ch"]
[Site "Vina del Mar"]
[Date "1997.??.??"]
[Round "7"]
[White "Valenzuela Fuentealba, Luis"]
[Black "Rivera, Guillermo"]
[Result "1-0"]
[ECO "E92"]
[WhiteElo "2355"]
[BlackElo "2135"]
[PlyCount "71"]
[EventDate "1997.03.17"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "CHI"]
[SourceTitle "CBM 058 Extra"]
[Source "ChessBase"]
[SourceDate "1997.07.29"]
[SourceVersion "1"]
[SourceVersionDate "1997.07.29"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 0-0 6. Nf3 e5 7. d5 a5 8. Bg5 h6 9. Bh4 Na6 10. Nd2 Qe8 11. 0-0 Nh7 12. a3 Bf6 13. Bxf6 Nxf6 14. b4 Bd7 15. Rb1 axb4 16. axb4 Qe7 17. Qc2 Kg7 18. Na2 b6 19. Nc1 h5 20. Nd3 Ng4 21. Qc3 f5 22. f3 Nf6 23. Ra1 fxe4 24. Nxe4 Nxe4 25. fxe4 Qg5 26. Qc1 Rxf1+ 27. Bxf1 Qd8 28. Ra2 c6 29. dxc6 Be6 30. b5 Nc7 31. Nb4 Rxa2 32. Nxa2 Nxb5 33. cxb5 Bxa2 34. Bc4 Bxc4 35. Qxc4 Qc7 36. Qe6 1-0

[Event "CHI-ch"]
[Site "Vina del Mar"]
[Date "1997.??.??"]
[Round "3"]
[White "Varas Gonzalez, Carlos"]
[Black "Rivera, Guillermo"]
[Result "1-0"]
[ECO "B22"]
[WhiteElo "2295"]
[BlackElo "2135"]
[PlyCount "47"]
[EventDate "1997.03.17"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "CHI"]
[SourceTitle "CBM 058 Extra"]
[Source "ChessBase"]
[SourceDate "1997.07.29"]
[SourceVersion "1"]
[SourceVersionDate "1997.07.29"]
[SourceQuality "1"]

1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 Nf6 5. Nf3 Bg4 6. Be2 e6 7. h3 Bh5 8. 0-0 Be7 9. Be3 cxd4 10. cxd4 Nc6 11. Nc3 Qd7 12. Ne5 Bxe2 13. Qxe2 Nxe5 14. dxe5 Nd5 15. Nxd5 exd5 16. Bd4 0-0 17. f4 Qa4 18. Qe3 b6 19. Kh1 Rac8 20. f5 Bc5 21. f6 gxf6 22. Qh6 Bxd4 23. Rf4 Be3 24. exf6 1-0

[Event "Taby op"]
[Site "Taby"]
[Date "1991.??.??"]
[Round "3"]
[White "Johansson, Thomas"]
[Black "Rivera, Guillermo"]
[Result "1-0"]
[ECO "E99"]
[PlyCount "79"]
[EventDate "1991.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SWE"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. Nc3 0-0 5. e4 d6 6. Be2 e5 7. 0-0 Nc6 8. d5 Ne7 9. Ne1 Nd7 10. Nd3 f5 11. Bd2 f4 12. f3 g5 13. a4 a5 14. Nb5 h5 15. b4 axb4 16. Bxb4 Nf6 17. c5 g4 18. cxd6 cxd6 19. Nxd6 g3 20. Nxc8 Rxc8 21. Qb3 Kh8 22. a5 Nh7 23. Nc5 Ng6 24. h3 Rxc5 25. Bxc5 Ng5 26. Rfc1 Nxh3+ 27. gxh3 Qd7 28. Bf1 Rf6 29. Qb5 Qf7 30. Bb6 Nh4 31. Bg2 Rg6 32. Rc8+ Kh7 33. Qe8 Qf6 34. Bd8 Qa6 35. Bxh4 Qd3 36. Kh1 Qd4 37. Rac1 Qd2 38. Be7 Qxa5 39. h4 b5 40. Qg8+ 1-0

[Event "Taby op"]
[Site "Taby"]
[Date "1991.??.??"]
[Round "2"]
[White "Rivera, Guillermo"]
[Black "Franzen, Bo"]
[Result "1-0"]
[ECO "A17"]
[PlyCount "59"]
[EventDate "1991.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SWE"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 e6 3. g3 d5 4. cxd5 exd5 5. d4 c6 6. Bg2 Bf5 7. Nf3 Nbd7 8. Nh4 Be6 9. f4 g6 10. Qd3 Bg7 11. f5 gxf5 12. Nxf5 Bxf5 13. Qxf5 Qe7 14. Bg5 h6 15. Bh4 Qe6 16. Bh3 Qxf5 17. Bxf5 0-0 18. 0-0-0 Nb6 19. b3 Nh7 20. g4 c5 21. dxc5 Bxc3 22. cxb6 axb6 23. Kb1 Ra5 24. Rd3 Bf6 25. Bxh7+ Kxh7 26. Bxf6 Rfa8 27. Rd2 Kg6 28. Rf1 Rc5 29. h4 Rc6 30. h5+ 1-0

