[Event "Piriapolis"]
[White "Diano, Daniel"]
[Black "Rivera, Do"]
[Site "Piriapolis"]
[Round "2"]
[Result "1/2-1/2"]
[Date "1977.??.??"]
[ECO "B21"]
[PlyCount "117"]
[EventDate "1977.??.??"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "URU"]
[EventCategory "2"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. f4 g6 2. e4 c5 3. Nf3 Bg7 4. Bc4 e6 5. d3 Ne7 6. c3 0-0 7. Be3 d5 8. Bb3 b6 9. e5 Bb7 10. d4 Nd7 11. Nbd2 cxd4 12. cxd4 Rc8 13. Rc1 Nc6 14. a3 Qe7 15. 0-0 Ba6 16. Re1 Na5 17. Ba2 Rxc1 18. Qxc1 Rc8 19. Qb1 Qe8 20. Rc1 Nb8 21. b4 Rxc1+ 22. Qxc1 Qc6 23. Qxc6 Naxc6 24. Kf2 Bf8 25. g4 Bb5 26. Bb3 a5 27. a4 Bd3 28. b5 Nb4 29. Ne1 Be7 30. Kf3 h5 31. h3 hxg4+ 32. hxg4 Nd7 33. Bg1 Kg7 34. Bh2 Bh4 35. Ng2 Be7 36. Ne1 Bh4 37. Bg3 Bxg3 38. Kxg3 Be2 39. Ng2 Nd3 40. Ne3 Nf8 41. f5 Nd7 42. Kh4 Nf4 43. Nb1 Bd3 44. Nc3 gxf5 45. gxf5 Kf8 46. Bd1 exf5 47. Nxf5 Ne6 48. Bg4 Bc4 49. Ne3 Ke8 50. Nxc4 dxc4 51. d5 Nec5 52. e6 fxe6 53. dxe6 Nf6 54. Kg5 Ke7 55. Be2 Nxe6+ 56. Kh4 Nd4 57. Bxc4 Kd6 58. Kg5 Kc5 59. Bf7 1/2-1/2

[Event "Piriapolis"]
[White "Estrada Degrandi, Walter"]
[Black "Rivera, Do"]
[Site "Piriapolis"]
[Round "7"]
[Result "1/2-1/2"]
[Date "1977.??.??"]
[ECO "B08"]
[PlyCount "34"]
[EventDate "1977.??.??"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "URU"]
[EventCategory "2"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Bc4 Bg7 5. h3 0-0 6. Nf3 Nc6 7. Bf4 e5 8. dxe5 dxe5 9. Nxe5 Nxe5 10. Bxe5 Qxd1+ 11. Rxd1 Nxe4 12. Bxg7 Re8 13. Nxe4 Rxe4+ 14. Be2 Kxg7 15. Rd8 Rxe2+ 16. Kxe2 Bg4+ 17. hxg4 Rxd8 1/2-1/2

[Event "Piriapolis"]
[White "Garcia, Horacio"]
[Black "Rivera, Do"]
[Site "Piriapolis"]
[Round "9"]
[Result "0-1"]
[Date "1977.??.??"]
[ECO "B02"]
[WhiteElo "2350"]
[PlyCount "48"]
[EventDate "1977.??.??"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "URU"]
[EventCategory "2"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. Nc3 Nxc3 4. bxc3 d6 5. f4 c5 6. Nf3 Nc6 7. d4 dxe5 8. dxe5 Qxd1+ 9. Kxd1 Bg4 10. Ke2 f6 11. exf6 exf6 12. Kf2 0-0-0 13. Bd3 Ne7 14. Nh4 Nd5 15. Bd2 Bd6 16. g3 c4 17. Be4 Bc5+ 18. Kg2 Rhe8 19. Rae1 Nb4 20. Bc1 Nxa2 21. h3 Be6 22. Be3 Bxe3 23. Rxe3 Bd5 24. Rhe1 Rxe4 0-1

[Event "Piriapolis"]
[White "Rivera, Do"]
[Black "Bademian Orchanian, Jose"]
[Site "Piriapolis"]
[Round "8"]
[Result "0-1"]
[Date "1977.??.??"]
[ECO "A13"]
[BlackElo "2235"]
[PlyCount "120"]
[EventDate "1977.??.??"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "URU"]
[EventCategory "2"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Nbd7 5. b3 Bd6 6. 0-0 0-0 7. Bb2 c6 8. d3 Re8 9. Nc3 b6 10. cxd5 exd5 11. Rc1 Bb7 12. Nd2 Rb8 13. e4 d4 14. Ne2 c5 15. Nc4 Bc7 16. a4 Ne5 17. Qc2 Rc8 18. Nxe5 Bxe5 19. Qd2 Qe7 20. h3 Bb8 21. f4 Nd5 22. Nxd4 cxd4 23. exd5 Qd7 24. Rxc8 Rxc8 25. Rc1 Rd8 26. Rc4 Bd6 27. Bxd4 Qf5 28. Bf2 Bxd5 29. Be4 Qe6 30. Bxd5 Qxd5 31. Qc2 Qe6 32. Kh2 h6 33. Re4 Qd7 34. Rc4 Qb7 35. Qe2 Bf8 36. Qe4 Qb8 37. Bd4 b5 38. Be5 Qb6 39. Bd4 Qa6 40. Rc6 Qb7 41. axb5 Qxb5 42. Rc7 Qxb3 43. Rxa7 Qc2+ 44. Kh1 Qd1+ 45. Kg2 Rc8 46. Qd5 Qxd3 47. Qxf7+ Kh7 48. Ra2 Rc1 49. Qd5 Bc5 50. g4 Bxd4 51. Qf5+ Qxf5 52. gxf5 Rc5 53. Ra4 Bf6 54. Kf3 Rxf5 55. Kg4 Rd5 56. Rb4 Rd4 57. Rb7 Bg5 58. Rf7 Kg6 59. Rf8 Bf6 60. Ra8 h5+ 0-1

[Event "Piriapolis"]
[White "Rivera, Do"]
[Black "Casas, Fernando"]
[Site "Piriapolis"]
[Round "1"]
[Result "0-1"]
[Date "1977.??.??"]
[ECO "B28"]
[BlackElo "2300"]
[PlyCount "82"]
[EventDate "1977.??.??"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "URU"]
[EventCategory "2"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 a6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Nb3 Bb4 7. Bg5 Qc7 8. Qf3 d5 9. exd5 e4 10. Qg3 Qxg3 11. hxg3 Bxc3+ 12. bxc3 Nxd5 13. 0-0-0 Ne7 14. Nc5 f6 15. Nxe4 0-0 16. Bc4+ Kh8 17. Nd6 b5 18. Nf7+ Kg8 19. Bb3 Bf5 20. Nh6+ Kh8 21. Nf7+ Kg8 22. Nh6+ Kh8 23. Nxf5 Nxf5 24. Bf4 Nc6 25. g4 Nfe7 26. Bd6 a5 27. Bd5 Nxd5 28. Bxf8 Nxc3 29. Rd3 Nxa2+ 30. Kb2 Rxf8 31. Rd6 Nab4 32. c3 Ne5 33. Kb3 Nbd3 34. f3 Nc5+ 35. Ka2 h6 36. Rd5 Rc8 37. Ka3 Nc4+ 38. Ka2 Na4 39. Kb3 Nxc3 40. Kxc3 Nb6+ 41. Kd4 Rc4+ 0-1

[Event "Piriapolis"]
[White "Rivera, Do"]
[Black "Franco Ocampos, Zenon"]
[Site "Piriapolis"]
[Round "4"]
[Result "0-1"]
[Date "1977.??.??"]
[ECO "B62"]
[BlackElo "2315"]
[PlyCount "74"]
[EventDate "1977.??.??"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "URU"]
[EventCategory "2"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bg5 e6 7. Bxf6 Qxf6 8. Nb3 a6 9. Qd2 Qd8 10. 0-0-0 Be7 11. Kb1 Bd7 12. f4 Rc8 13. g4 Na5 14. Qd4 0-0 15. g5 Nxb3 16. cxb3 Qc7 17. h4 Rfd8 18. Bh3 b5 19. Rc1 Qc5 20. Qd3 Qb6 21. f5 b4 22. Na4 Qa5 23. Rcg1 d5 24. f6 dxe4 25. Qe2 Bf8 26. h5 Bb5 27. Qg4 Bd3+ 28. Ka1 Qe5 29. g6 Qxf6 30. gxf7+ Kxf7 31. Rc1 Bd6 32. Nb6 Rxc1+ 33. Rxc1 Be5 34. Qg2 e3 35. Nc4 Bd4 36. Qb7+ Kg8 37. Qxa6 Bxb2+ 0-1

[Event "Piriapolis"]
[White "Rivera, Do"]
[Black "Riccetto, Alvaro"]
[Site "Piriapolis"]
[Round "3"]
[Result "1-0"]
[Date "1977.??.??"]
[ECO "B23"]
[BlackElo "2225"]
[PlyCount "119"]
[EventDate "1977.??.??"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "URU"]
[EventCategory "2"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. f4 e6 4. Nf3 d6 5. Bb5 a6 6. Bxc6+ bxc6 7. 0-0 Be7 8. b3 Nf6 9. e5 Nd5 10. Ne4 0-0 11. Bb2 f6 12. g3 dxe5 13. fxe5 f5 14. Nf2 a5 15. Qe2 a4 16. c4 Nb4 17. d4 cxd4 18. Nxd4 a3 19. Bc3 Qb6 20. Rad1 Na6 21. Rd2 Nc7 22. Rfd1 Bb7 23. Nc2 c5 24. Ne1 Rad8 25. Rd7 Rxd7 26. Rxd7 Rf7 27. Qd2 Qc6 28. Qd3 Bc8 29. Rxe7 Rxe7 30. Qd6 Qd7 31. Qxc5 Na6 32. Qxa3 Rf7 33. Ned3 Qc6 34. Ne1 Nc5 35. Qa5 Ne4 36. Bb4 Rd7 37. Qb5 Qa8 38. a4 Nxf2 39. Kxf2 Qe4 40. Qc5 Rd8 41. Qe7 Qd4+ 42. Kg2 Qd7 43. Qxd7 Bxd7 44. Bd6 Ra8 45. Nd3 Bxa4 46. bxa4 Rxa4 47. c5 Rc4 48. Kf3 g5 49. Ke3 h5 50. Kd2 h4 51. Nb2 Rb4 52. Kc3 Rb7 53. Nc4 g4 54. c6 Ra7 55. c7 Ra8 56. Nb6 Re8 57. c8Q Rxc8+ 58. Nxc8 h3 59. Bc5 f4 60. Bf2 1-0

[Event "Piriapolis"]
[White "Rivera, Do"]
[Black "Silva Nazzari, Roberto"]
[Site "Piriapolis"]
[Round "6"]
[Result "1/2-1/2"]
[Date "1977.??.??"]
[ECO "B80"]
[BlackElo "2275"]
[PlyCount "57"]
[EventDate "1977.??.??"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "URU"]
[EventCategory "2"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. Nf3 c5 2. e4 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 d6 6. 0-0 Nf6 7. Be3 Be7 8. Nc3 Qc7 9. f4 Nc6 10. Qf3 Bd7 11. Nb3 Nb4 12. a3 Nxd3 13. cxd3 Bc6 14. Nd4 Nd7 15. b4 Rc8 16. Rac1 Qd8 17. Qg3 0-0 18. f5 e5 19. f6 Bxf6 20. Nf5 Kh8 21. Nxd6 Ra8 22. a4 b6 23. b5 axb5 24. axb5 Nc5 25. Bxc5 bxc5 26. Nc4 Bb7 27. Kh1 Qc7 28. b6 Qd8 29. Nxe5 1/2-1/2

[Event "Piriapolis"]
[White "Trois, Francisco R Torres"]
[Black "Rivera, Do"]
[Site "Piriapolis"]
[Round "5"]
[Result "1-0"]
[Date "1977.??.??"]
[ECO "A06"]
[WhiteElo "2395"]
[PlyCount "73"]
[EventDate "1977.??.??"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "URU"]
[EventCategory "2"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. Nf3 d5 2. b3 Bg4 3. Bb2 e6 4. e3 Nf6 5. d3 Bd6 6. h3 Bh5 7. g4 Bg6 8. Ne5 Nbd7 9. Nxd7 Nxd7 10. Bxg7 Rg8 11. Bb2 Qe7 12. Bg2 c6 13. Qe2 0-0-0 14. Nd2 e5 15. 0-0-0 f6 16. Rde1 Kb8 17. Rhf1 Rge8 18. Kb1 Nc5 19. Qd1 e4 20. dxe4 dxe4 21. Qc1 Na6 22. Rd1 f5 23. Nc4 Bc7 24. Rxd8+ Rxd8 25. Rd1 Rd5 26. Rxd5 cxd5 27. gxf5 Bxf5 28. Nd2 Qh4 29. Qf1 Qh6 30. a3 Qg6 31. b4 Bd6 32. Nb3 Qg5 33. Nd4 Bg6 34. Nb5 Be5 35. f4 exf3 36. Qxf3 b6 37. Qf8+ 1-0

