[Event "Punta del Este Alekhiine op 1st"]
[Site "Punta del Este"]
[Date "2024.03.10"]
[Round "5"]
[White "Bauza, Alejandro"]
[Black "Larrea, Osvaldo"]
[Result "1/2-1/2"]
[ECO "A04"]
[WhiteElo "2144"]
[BlackElo "1745"]
[PlyCount "87"]
[EventDate "2024.03.08"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "URU"]
[SourceTitle "CB13_2024"]
[SourceDate "2024.03.27"]
[SourceVersion "1"]
[SourceVersionDate "2024.03.27"]
[SourceQuality "1"]

1. Nf3 f5 2. e4 fxe4 3. Ng5 Nf6 4. d3 e5 5. dxe4 h6 6. Nf3 d6 7. Bc4 Nbd7 8. Nc3 Nc5 9. Nh4 Bg4 10. f3 Bh5 11. 0-0 Nfxe4 12. Nxe4 Nxe4 13. Qe1 Nf6 14. Bd3 Bf7 15. Ng6 Bxg6 16. Bxg6+ Kd7 17. Bf5+ Ke8 18. f4 e4 19. Bxe4 Nxe4 20. Qxe4+ Kf7 21. Qd5+ Kg6 22. Qxb7 Be7 23. Qe4+ Kf7 24. Bd2 Bf6 25. Qd5+ Kg6 26. Qd3+ Kf7 27. Bc3 Rf8 28. Bxf6 Qxf6 29. Qc4+ Kg6 30. Qxc7 Rac8 31. Qb7 Rxc2 32. Qe4+ Qf5 33. Qd4 Rf6 34. Rf3 Kh7 35. Rd1 Qc5 36. Qxc5 dxc5 37. Rb1 Rd6 38. Rf2 Rdd2 39. Rxd2 Rxd2 40. a3 Kg6 41. Rc1 Rxb2 42. Rxc5 Rb1+ 43. Kf2 Rb2+ 44. Kf1 1/2-1/2

[Event "Punta del Este Alekhiine op 1st"]
[Site "Punta del Este"]
[Date "2024.03.10"]
[Round "4"]
[White "Larrea, Osvaldo"]
[Black "Martinez Rodriguez, Alvaro"]
[Result "1-0"]
[ECO "A03"]
[WhiteElo "1745"]
[PlyCount "51"]
[EventDate "2024.03.08"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "URU"]
[SourceTitle "CB13_2024"]
[SourceDate "2024.03.27"]
[SourceVersion "1"]
[SourceVersionDate "2024.03.27"]
[SourceQuality "1"]

1. f4 d5 2. Nf3 Nc6 3. e3 e6 4. Bb5 Nf6 5. b3 Bd7 6. Bb2 Bd6 7. 0-0 0-0 8. Qe1 a6 9. Bxc6 Bxc6 10. Qg3 Qe7 11. Ne5 Ne4 12. Nxc6 Qf6 13. Bxf6 Nxg3 14. hxg3 gxf6 15. Nd4 e5 16. Nf5 Bc5 17. Nc3 d4 18. Ne4 Bb6 19. Nxf6+ Kh8 20. Kf2 Rg8 21. Nxg8 Rxg8 22. fxe5 dxe3+ 23. Nxe3 Re8 24. c3 Rxe5 25. d4 Re7 26. Nd5 1-0

[Event "Punta del Este Alekhiine op 1st"]
[Site "Punta del Este"]
[Date "2024.03.09"]
[Round "2"]
[White "Araque, Silvana"]
[Black "Larrea, Osvaldo"]
[Result "1/2-1/2"]
[ECO "B00"]
[WhiteElo "1472"]
[BlackElo "1745"]
[PlyCount "116"]
[EventDate "2024.03.08"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "URU"]
[SourceTitle "CB13_2024"]
[SourceDate "2024.03.27"]
[SourceVersion "1"]
[SourceVersionDate "2024.03.27"]
[SourceQuality "1"]

1. e4 b6 2. d4 Bb7 3. Bd3 f5 4. Nc3 e6 5. Be3 Nf6 6. f3 fxe4 7. fxe4 Bb4 8. Nge2 Bxe4 9. Bxe4 Nxe4 10. Qd3 d5 11. a3 Bxc3+ 12. Nxc3 Nxc3 13. Qxc3 0-0 14. Bf2 Nd7 15. 0-0 Rc8 16. Rae1 Rf6 17. Re2 Nf8 18. Rfe1 Qd7 19. Bg3 Rf7 20. Be5 Qe7 21. Qh3 Rf5 22. Re3 Qf7 23. Bg3 Qg6 24. Re5 Rxe5 25. Rxe5 Re8 26. Qh5 Qxh5 27. Rxh5 c6 28. Rh3 Nd7 29. Bf2 Nf6 30. Rc3 Rc8 31. a4 Ne4 32. Rd3 Nxf2 33. Kxf2 Kf7 34. Kg3 Ke7 35. Kf4 Rf8+ 36. Ke3 Kd6 37. b4 a5 38. bxa5 bxa5 39. Rb3 Kc7 40. c3 Rb8 41. Rxb8 Kxb8 42. Kf4 Kc7 43. Ke5 Kd7 44. g3 Ke7 45. Kf4 Kf6 46. Kg4 e5 47. Kf3 e4+ 48. Kf4 g5+ 49. Ke3 Kf5 50. h3 Ke6 51. Kd2 Kd6 52. Ke2 c5 53. Kd2 cxd4 54. cxd4 Ke6 55. Ke3 Kf5 56. g4+ Kg6 57. Kf2 h5 58. Ke3 h4 1/2-1/2

[Event "Punta del Este Alekhiine op 1st"]
[Site "Punta del Este"]
[Date "2024.03.08"]
[Round "1"]
[White "Larrea, Osvaldo"]
[Black "Saralegui Cassan, Mario"]
[Result "0-1"]
[ECO "A03"]
[WhiteElo "1745"]
[BlackElo "1997"]
[PlyCount "38"]
[EventDate "2024.03.08"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "URU"]
[SourceTitle "CB13_2024"]
[SourceDate "2024.03.27"]
[SourceVersion "1"]
[SourceVersionDate "2024.03.27"]
[SourceQuality "1"]

1. f4 d5 2. Nf3 Nf6 3. e3 g6 4. b3 Bg7 5. Bb2 0-0 6. Be2 c5 7. 0-0 Nc6 8. Bb5 Qb6 9. Bxc6 Qxc6 10. Ne5 Qc7 11. Qe2 b6 12. Nc3 Bb7 13. Nd1 Rad8 14. Ng4 d4 15. Nxf6+ exf6 16. e4 Rfe8 17. Nf2 f5 18. Qc4 fxe4 19. Nd1 Qc6 0-1

[Event "Punta del Este Barla Memorial 2nd"]
[Site "Punta del Este"]
[Date "2023.03.18"]
[Round "2"]
[White "Bossi, Hugo"]
[Black "Larrea, Osvaldo"]
[Result "0-1"]
[ECO "A80"]
[WhiteElo "1328"]
[BlackElo "1589"]
[PlyCount "46"]
[EventDate "2023.03.17"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "URU"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 f5 2. e3 Nf6 3. Bd3 e6 4. f4 b6 5. Nf3 Bb7 6. 0-0 Be7 7. Nbd2 0-0 8. Qe2 Qe8 9. e4 fxe4 10. Nxe4 Nxe4 11. Bxe4 Bxe4 12. Qxe4 Nc6 13. Bd2 Qh5 14. Ne5 Nxe5 15. fxe5 c6 16. c3 Rae8 17. g4 Qh4 18. Qg2 g5 19. Rxf8+ Rxf8 20. Bxg5 Qxg5 21. h4 Qe3+ 22. Kh1 Rf2 23. Qg1 Qf3+ 0-1

[Event "Punta del Este Barla Memorial 2nd"]
[Site "Punta del Este"]
[Date "2023.03.18"]
[Round "3"]
[White "Larrea, Osvaldo"]
[Black "Cabrera Tabeira, Nelson Fabian"]
[Result "0-1"]
[ECO "A03"]
[WhiteElo "1589"]
[BlackElo "1677"]
[PlyCount "52"]
[EventDate "2023.03.17"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "URU"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. f4 d5 2. Nf3 Nf6 3. e3 e6 4. b3 c5 5. Bb5+ Bd7 6. Bxd7+ Nbxd7 7. Bb2 Bd6 8. 0-0 0-0 9. Qe1 Qe7 10. Qg3 Rae8 11. d3 e5 12. fxe5 Nxe5 13. Bxe5 Bxe5 14. Nxe5 Qxe5 15. Qxe5 Rxe5 16. d4 Rxe3 17. dxc5 Ne4 18. Rd1 Re8 19. Na3 Nc3 20. Rd2 a6 21. h3 R8e5 22. Kf2 f5 23. Rd3 f4 24. Nb1 Ne4+ 25. Kf1 Ng3+ 26. Kf2 Nh1+ 0-1

[Event "Punta del Este Barla Memorial 2nd"]
[Site "Punta del Este"]
[Date "2023.03.17"]
[Round "1"]
[White "Larrea, Osvaldo"]
[Black "Guerrero, Alvaro"]
[Result "0-1"]
[ECO "A03"]
[WhiteElo "1589"]
[BlackElo "2039"]
[PlyCount "86"]
[EventDate "2023.03.17"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "URU"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. f4 g6 2. Nf3 Bg7 3. e3 d5 4. Nc3 h5 5. d3 Nh6 6. g3 c6 7. Bg2 Nd7 8. Bd2 0-0 9. Qe2 e5 10. e4 d4 11. Nd1 c5 12. fxe5 Ng4 13. 0-0 Ndxe5 14. Nh4 Be6 15. h3 Nh6 16. Nf3 f6 17. Nf2 Qd7 18. Kh2 c4 19. b3 c3 20. Bc1 Nhf7 21. a4 Kh7 22. Ba3 Rh8 23. Bc1 a5 24. h4 b6 25. Kg1 Ng4 26. Ba3 Nfe5 27. Nxe5 Nxe5 28. Bf3 Kg8 29. Bc1 Nf7 30. Bg2 Rh7 31. Kh1 Kh8 32. Kh2 Rg8 33. Bh3 g5 34. Bxe6 Qxe6 35. hxg5 fxg5 36. Kg2 Be5 37. Nh1 Nh6 38. Ba3 Ng4 39. Bc1 h4 40. Rf5 Qh6 41. Qxg4 hxg3 42. Ba3 Qh2+ 43. Kf3 Rh3 0-1

[Event "Colonia del Sacramento op 3rd"]
[Site "Colonia del Sacramento"]
[Date "2022.05.22"]
[Round "?"]
[White "Larrea, Osvaldo"]
[Black "Steiner, Matias"]
[Result "1/2-1/2"]
[ECO "A02"]
[WhiteElo "1623"]
[BlackElo "1609"]
[PlyCount "19"]
[EventDate "2022.05.20"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "URU"]
[SourceTitle "CBM 208 Extra"]
[Source "ChessBase"]
[SourceDate "2022.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.07.31"]
[SourceQuality "1"]

1. f4 Nf6 2. Nf3 g6 3. b3 Bg7 4. Bb2 0-0 5. e3 d6 6. Be2 c5 7. 0-0 a6 8. Qe1 b5 9. a4 Bb7 10. axb5 1/2-1/2

[Event "Colonia del Sacramento op 3rd"]
[Site "Colonia del Sacramento"]
[Date "2022.05.22"]
[Round "?"]
[White "Rodriguez, Julio"]
[Black "Larrea, Osvaldo"]
[Result "1/2-1/2"]
[ECO "B00"]
[WhiteElo "1657"]
[BlackElo "1623"]
[PlyCount "40"]
[EventDate "2022.05.20"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "URU"]
[SourceTitle "CBM 208 Extra"]
[Source "ChessBase"]
[SourceDate "2022.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.07.31"]
[SourceQuality "1"]

1. e4 b6 2. Nc3 Bb7 3. Bc4 e6 4. Bb3 Bb4 5. d3 Bxc3+ 6. bxc3 h6 7. Be3 Ne7 8. Nf3 Ng6 9. 0-0 0-0 10. Qe2 f5 11. exf5 Rxf5 12. Nd4 Rf6 13. Qh5 Kh7 14. f4 Nc6 15. Nf3 Nge7 16. Ng5+ Kg8 17. Ne4 Rf5 18. Qh3 Nd5 19. Rae1 Nxe3 20. Rxe3 Qf8 1/2-1/2

[Event "Colonia del Sacramento op 3rd"]
[Site "Colonia del Sacramento"]
[Date "2022.05.21"]
[Round "?"]
[White "Durante, Aurelio"]
[Black "Larrea, Osvaldo"]
[Result "1-0"]
[ECO "C00"]
[WhiteElo "1951"]
[BlackElo "1623"]
[PlyCount "127"]
[EventDate "2022.05.20"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "URU"]
[SourceTitle "CBM 208 Extra"]
[Source "ChessBase"]
[SourceDate "2022.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.07.31"]
[SourceQuality "1"]

1. e4 e6 2. d3 b6 3. Nf3 Bb7 4. g3 Be7 5. Bg2 d6 6. 0-0 Nd7 7. Re1 Ngf6 8. c3 0-0 9. Nbd2 Ng4 10. d4 e5 11. h3 Ngf6 12. Qc2 h6 13. dxe5 dxe5 14. Nc4 Bd6 15. b3 Qe7 16. Nh4 Rfe8 17. Nf5 Qf8 18. Ncxd6 cxd6 19. Rd1 Re6 20. Ba3 Nc5 21. Bxc5 dxc5 22. Rd2 g6 23. Ne3 Rd8 24. Rad1 Red6 25. Nd5 Bxd5 26. exd5 Nd7 27. c4 f5 28. Re1 Qf6 29. Rde2 Re8 30. a3 a5 31. b4 cxb4 32. axb4 axb4 33. Qd2 b3 34. Qxh6 g5 35. Qxf6 Rxf6 36. Rb2 Nc5 37. Bf1 Rd6 38. Reb1 Kf7 39. Be2 Kf6 40. Bd1 e4 41. Bxb3 e3 42. Re2 exf2+ 43. Kxf2 Ne4+ 44. Kg2 Ra8 45. Rbb2 Ra3 46. Re3 Nc5 47. Kf3 Rd8 48. Bc2 Ra6 49. Re1 Ra3+ 50. Kg2 Ra6 51. Reb1 Rd6 52. Rf1 Ke5 53. Rxf5+ Kd4 54. Bd1 Ra1 55. Be2 Nd3 56. Bxd3 Kxd3 57. Rxg5 Kxc4 58. h4 b5 59. Rg4+ Kc5 60. Rc2+ Kxd5 61. Rg5+ Ke6 62. Rxb5 Rdd1 63. Rc4 Kd6 64. Rf4 1-0

[Event "Colonia del Sacramento op 3rd"]
[Site "Colonia del Sacramento"]
[Date "2022.05.21"]
[Round "?"]
[White "Larrea, Osvaldo"]
[Black "Pereira, Gerardo"]
[Result "1-0"]
[ECO "A02"]
[WhiteElo "1623"]
[BlackElo "1324"]
[PlyCount "87"]
[EventDate "2022.05.20"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "URU"]
[SourceTitle "CBM 208 Extra"]
[Source "ChessBase"]
[SourceDate "2022.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.07.31"]
[SourceQuality "1"]

1. f4 e6 2. Nf3 Nf6 3. e3 d6 4. b3 g6 5. Bb2 Bg7 6. Be2 b6 7. 0-0 Bb7 8. Qe1 Nbd7 9. Nc3 Ne4 10. Nd1 Bxb2 11. Nxb2 Nef6 12. Nd3 h6 13. Nf2 Nc5 14. Nd4 Qd7 15. b4 Nce4 16. Nxe4 Bxe4 17. d3 Bb7 18. e4 a6 19. Qc3 Rg8 20. Nf3 Nh7 21. Qd2 f5 22. e5 d5 23. d4 Bc6 24. Ne1 Bb5 25. Nd3 Qe7 26. Rf3 g5 27. fxg5 Rxg5 28. Nf4 Bxe2 29. Qxe2 Nf8 30. c3 Ng6 31. Nxg6 Rxg6 32. Raf1 Qg7 33. R1f2 Ke7 34. c4 Rg8 35. cxd5 Rg4 36. dxe6 Qg6 37. Rc3 c5 38. Qc2 Qxe6 39. bxc5 Rc8 40. cxb6 Rxc3 41. Qxc3 Qxb6 42. Rb2 Qa7 43. Qb4+ Kd8 44. Qf8+ 1-0

[Event "Colonia del Sacramento op 3rd"]
[Site "Colonia del Sacramento"]
[Date "2022.05.20"]
[Round "?"]
[White "Larrea, Osvaldo"]
[Black "Lopez, Daniel"]
[Result "1-0"]
[ECO "A03"]
[WhiteElo "1623"]
[BlackElo "1531"]
[PlyCount "27"]
[EventDate "2022.05.20"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "URU"]
[SourceTitle "CBM 208 Extra"]
[Source "ChessBase"]
[SourceDate "2022.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.07.31"]
[SourceQuality "1"]

1. f4 d5 2. Nf3 Nc6 3. e3 Bf5 4. Bb5 e6 5. 0-0 a6 6. Bxc6+ bxc6 7. b3 Nf6 8. Bb2 Be7 9. d3 0-0 10. Qe1 Ng4 11. Qg3 Bc5 12. Nd4 e5 13. Nxf5 Nf6 14. Qxg7# 1-0

[Event "Punta del Este Alekhine op"]
[Site "Punta del Este"]
[Date "2020.03.08"]
[Round "4"]
[White "De Los Santos, Nahuel"]
[Black "Larrea, Osvaldo"]
[Result "0-1"]
[ECO "A85"]
[BlackElo "1594"]
[PlyCount "96"]
[EventDate "2020.03.06"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "URU"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. d4 f5 2. c4 Nf6 3. Nc3 e6 4. e3 Bb4 5. Bd2 b6 6. Nf3 0-0 7. a3 Bxc3 8. Bxc3 Bb7 9. Be2 Qe8 10. h3 Qg6 11. 0-0 Ne4 12. Qd3 Ng5 13. d5 Nxh3+ 14. Kh2 Ng5 15. Nxg5 Qxg5 16. Bf3 Na6 17. Bd1 Rae8 18. f3 e5 19. Bb4 Rf6 20. Bc2 d6 21. Rab1 Rh6+ 22. Kg1 e4 23. Qe2 exf3 24. Rxf3 Bc8 25. Rbf1 Rf6 26. Bd2 Qg6 27. Bc3 Rf7 28. Qd3 Nc5 29. Qd4 Ne4 30. Bxe4 Rxe4 31. Qd3 Rfe7 32. Kf2 Qg5 33. Re1 Qh4+ 34. Rg3 f4 35. exf4 Rxf4+ 36. Kg1 Rxe1+ 37. Bxe1 Qf6 38. Rf3 Rxf3 39. Qxf3 Qxf3 40. gxf3 Kf7 41. Kg2 Bf5 42. b4 Bd3 43. c5 Bc4 44. cxd6 cxd6 45. Bg3 Ke7 46. Bh4+ Kd7 47. Kg3 Bxd5 48. Kf4 Kc7 0-1

[Event "Punta del Este Alekhine op"]
[Site "Punta del Este"]
[Date "2020.03.08"]
[Round "5"]
[White "Larrea, Osvaldo"]
[Black "Bentancurt, Juan"]
[Result "1/2-1/2"]
[ECO "A02"]
[WhiteElo "1594"]
[BlackElo "1730"]
[PlyCount "38"]
[EventDate "2020.03.06"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "URU"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. f4 c5 2. Nf3 Nf6 3. e3 Nc6 4. b3 g6 5. Bb2 Bg7 6. Bb5 0-0 7. Bxc6 bxc6 8. 0-0 d6 9. Nc3 Nd5 10. Na4 Bf5 11. Bxg7 Kxg7 12. a3 Nb6 13. Nc3 c4 14. b4 Rc8 15. e4 Bg4 16. Qe1 Bxf3 17. Rxf3 d5 18. e5 e6 19. Rh3 Nd7 1/2-1/2

[Event "Punta del Este Alekhine op"]
[Site "Punta del Este"]
[Date "2020.03.07"]
[Round "2"]
[White "Bossi, Hugo"]
[Black "Larrea, Osvaldo"]
[Result "0-1"]
[ECO "A80"]
[WhiteElo "1280"]
[BlackElo "1594"]
[PlyCount "76"]
[EventDate "2020.03.06"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "URU"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. d4 f5 2. e3 Nf6 3. Bd3 e6 4. Nf3 b6 5. Nbd2 Bb7 6. Qe2 Be7 7. e4 fxe4 8. Nxe4 0-0 9. Bg5 Nxe4 10. Bxe7 Qxe7 11. Bxe4 Bxe4 12. Qxe4 Nc6 13. c3 Rae8 14. 0-0 Qf6 15. Rae1 Qh6 16. Qh4 Qg6 17. Qe4 Ne7 18. Ne5 Qxe4 19. Rxe4 Rd8 20. a3 b5 21. Nd3 Nf5 22. Nc5 Nd6 23. Re2 Rf7 24. Nd3 Rf5 25. Nc5 a5 26. Re5 Rf7 27. Nd3 Rb8 28. Nc5 b4 29. axb4 axb4 30. Na6 Rb7 31. Nxb4 Nc4 32. Re2 Rf5 33. Ra1 c5 34. dxc5 Rxc5 35. Ra8+ Kf7 36. b3 Na5 37. Na6 Rxc3 38. b4 Rc1+ 0-1

[Event "Punta del Este Alekhine op"]
[Site "Punta del Este"]
[Date "2020.03.07"]
[Round "3"]
[White "Larrea, Osvaldo"]
[Black "Aramburu, Gabriel"]
[Result "0-1"]
[ECO "A03"]
[WhiteElo "1594"]
[BlackElo "1816"]
[PlyCount "82"]
[EventDate "2020.03.06"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "URU"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. f4 d5 2. Nf3 c5 3. e3 Nc6 4. Bb5 a6 5. Bxc6+ bxc6 6. b3 Nf6 7. Bb2 e6 8. 0-0 Be7 9. Qe1 a5 10. a4 Ba6 11. d3 Qb6 12. Bc3 c4 13. Bxa5 Qa7 14. Ne5 Bb7 15. Bc3 cxd3 16. cxd3 0-0 17. Qg3 Rad8 18. Nd2 c5 19. Ng4 d4 20. Nxf6+ Bxf6 21. Bb2 Qa6 22. e4 Qb6 23. Ba3 Rc8 24. Rab1 Ba6 25. Rfc1 Qa5 26. Rc2 Rfe8 27. e5 Be7 28. Ne4 Bb7 29. Nf6+ Bxf6 30. exf6 g6 31. Qg5 Qd8 32. Rxc5 Rxc5 33. Bxc5 h6 34. Qh4 Qd5 35. Rb2 Qxc5 36. Qxh6 Qf8 37. Qg5 Rc8 38. b4 Rc3 39. b5 Rxd3 40. Qe5 Rd1+ 41. Kf2 Qc8 0-1

[Event "Punta del Este Alekhine op"]
[Site "Punta del Este"]
[Date "2020.03.06"]
[Round "1"]
[White "Larrea, Osvaldo"]
[Black "Durante, Aurelio"]
[Result "0-1"]
[ECO "A02"]
[WhiteElo "1594"]
[BlackElo "1964"]
[PlyCount "60"]
[EventDate "2020.03.06"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "URU"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. f4 d6 2. Nf3 Bg4 3. e3 e5 4. fxe5 dxe5 5. Be2 Nc6 6. 0-0 f6 7. b3 Qd7 8. Bb2 0-0-0 9. e4 Bc5+ 10. Kh1 Nge7 11. d3 Kb8 12. Nbd2 h5 13. Ng1 Ng6 14. h3 Nf4 15. Qe1 Bxe2 16. Rxf4 Bxd3 17. cxd3 exf4 18. Ndf3 Qxd3 19. Rc1 Be3 20. Rc3 Qxe4 21. Rc4 Qd5 22. Qc3 Rd7 23. Bc1 Bxc1 24. Qxc1 g5 25. Qc3 Rhd8 26. Qxf6 g4 27. Nh4 f3 28. gxf3 Ne5 29. hxg4 hxg4 30. Re4 Nxf3 0-1

[Event "Punta del Este Interdepartamental"]
[Site "Punta del Este"]
[Date "2019.08.25"]
[Round "4.2"]
[White "Durante, Aurelio"]
[Black "Larrea, Osvaldo"]
[Result "1-0"]
[ECO "B06"]
[WhiteElo "1958"]
[BlackElo "1657"]
[PlyCount "79"]
[EventDate "2019.08.23"]
[EventType "team-swiss"]
[EventRounds "5"]
[EventCountry "URU"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]
[WhiteTeam "Canelones Las Piedras"]
[BlackTeam "San Jose"]
[WhiteTeamCountry "URU"]
[BlackTeamCountry "URU"]

1. e4 d6 2. Bc4 g6 3. d4 Bg7 4. c3 c6 5. Be3 Nf6 6. f3 b5 7. Bb3 Na6 8. Ne2 Nc7 9. a4 a6 10. 0-0 Be6 11. Bc2 Bc4 12. Nd2 Bxe2 13. Qxe2 0-0 14. b4 Qc8 15. a5 e5 16. dxe5 dxe5 17. Nb3 Ne6 18. Rfd1 Rd8 19. Rxd8+ Qxd8 20. Rd1 Qe8 21. Nc5 Nxc5 22. Bxc5 Rd8 23. Kf2 Rxd1 24. Bxd1 Qd7 25. Bb3 Bf8 26. Be3 Ne8 27. g3 Nc7 28. Qa2 Ne8 29. g4 Be7 30. Bxf7+ Kg7 31. Be6 Bh4+ 32. Ke2 Qd6 33. Bc5 Qd8 34. Bg8 Qc7 35. Bb3 Nf6 36. Qd2 Qc8 37. h3 h5 38. Qd6 hxg4 39. hxg4 Nxg4 40. Be6 1-0

[Event "Punta del Este Interdepartamental"]
[Site "Punta del Este"]
[Date "2019.08.25"]
[Round "5.2"]
[White "Larrea, Osvaldo"]
[Black "Lanaro, Emilio"]
[Result "0-1"]
[ECO "A03"]
[WhiteElo "1657"]
[BlackElo "1630"]
[PlyCount "70"]
[EventDate "2019.08.23"]
[EventType "team-swiss"]
[EventRounds "5"]
[EventCountry "URU"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]
[WhiteTeam "San Jose"]
[BlackTeam "Montevideo CL"]
[WhiteTeamCountry "URU"]
[BlackTeamCountry "URU"]

1. f4 d5 2. Nf3 g6 3. e3 Bg7 4. Be2 c5 5. 0-0 Nc6 6. Bb5 Bd7 7. Bxc6 Bxc6 8. Nc3 Nf6 9. Ne2 0-0 10. Ng3 Qc7 11. Ne5 Bb5 12. d3 Nd7 13. Nf3 e5 14. f5 e4 15. Ne1 Rae8 16. Qg4 Ne5 17. Qe2 Qb6 18. a4 Qa6 19. axb5 Qxa1 20. Bd2 Qxb2 21. dxe4 Nc4 22. fxg6 hxg6 23. Qd1 Nxd2 24. Qxd2 dxe4 25. Qe2 Qa3 26. Rf2 a6 27. Nf1 Bh6 28. g3 axb5 29. Ng2 b4 30. Qc4 Qc3 31. Qb5 c4 32. Qxb7 b3 33. cxb3 cxb3 34. Qd7 b2 35. Rxf7 b1Q 0-1

[Event "Punta del Este Interdepartamental"]
[Site "Punta del Este"]
[Date "2019.08.24"]
[Round "2.2"]
[White "Carvalho, Guillermo"]
[Black "Larrea, Osvaldo"]
[Result "1-0"]
[ECO "A83"]
[WhiteElo "2180"]
[BlackElo "1657"]
[PlyCount "67"]
[EventDate "2019.08.23"]
[EventType "team-swiss"]
[EventRounds "5"]
[EventCountry "URU"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]
[WhiteTeam "Montevideo Trebejos"]
[BlackTeam "San Jose"]
[WhiteTeamCountry "URU"]
[BlackTeamCountry "URU"]

1. d4 f5 2. Nc3 Nf6 3. Bg5 e6 4. e4 fxe4 5. Nxe4 Be7 6. Bxf6 Bxf6 7. Qh5+ g6 8. Qh6 Qe7 9. Nxf6+ Qxf6 10. 0-0-0 b6 11. h4 Qf8 12. Qe3 d5 13. h5 Bd7 14. Bd3 Kd8 15. hxg6 hxg6 16. Nf3 Nc6 17. Ba6 Nb4 18. Qg5+ Ke8 19. Qxg6+ Ke7 20. Ne5 Be8 21. Qg5+ Kd6 22. Rxh8 Qxh8 23. Qf4 Ke7 24. Bd3 Nxd3+ 25. Nxd3 Kd8 26. Re1 Qg8 27. Qf6+ Kd7 28. Nf4 Bf7 29. Nxd5 exd5 30. Re7+ Kc8 31. Qxf7 Qxf7 32. Rxf7 Kb7 33. g4 Rg8 34. f3 1-0

[Event "Punta del Este Interdepartamental"]
[Site "Punta del Este"]
[Date "2019.08.23"]
[Round "1.2"]
[White "Barreto, Carlos"]
[Black "Larrea, Osvaldo"]
[Result "1-0"]
[ECO "A80"]
[WhiteElo "1739"]
[BlackElo "1657"]
[PlyCount "87"]
[EventDate "2019.08.23"]
[EventType "team-swiss"]
[EventRounds "5"]
[EventCountry "URU"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]
[WhiteTeam "Rivera"]
[BlackTeam "San Jose"]
[WhiteTeamCountry "URU"]
[BlackTeamCountry "URU"]

1. d4 f5 2. Bf4 Nf6 3. e3 e6 4. Bd3 b6 5. Nf3 Bb7 6. Nbd2 Nc6 7. 0-0 Be7 8. h3 0-0 9. c4 Nb4 10. Bb1 Rc8 11. a3 Nc6 12. Ba2 d5 13. b4 Nb8 14. Ng5 Qd7 15. Ndf3 Bd6 16. Ne5 Bxe5 17. Bxe5 Ne4 18. Nxe4 fxe4 19. Qg4 Rf7 20. Rac1 c6 21. Rc3 Rcf8 22. Qg3 Na6 23. Bb3 Nc7 24. Bd1 dxc4 25. Bh5 g6 26. Bxc7 Qxc7 27. Qxc7 Rxc7 28. Be2 b5 29. Bd1 Rd7 30. Bc2 Rfd8 31. Bxe4 Kg7 32. f4 h6 33. Rf3 g5 34. Rg3 Kf6 35. fxg5+ hxg5 36. Rc2 Rg7 37. h4 Rdg8 38. h5 Rh8 39. Bg6 e5 40. dxe5+ Kxe5 41. Rxg5+ Kf6 42. Rg4 Re7 43. Rf2+ Ke6 44. Re4+ 1-0

[Event "URU-ch Seniors 65"]
[Site "Montevideo"]
[Date "2018.06.17"]
[Round "5.2"]
[White "Fernandez Cuneo, Carlos"]
[Black "Larrea, Osvaldo"]
[Result "1/2-1/2"]
[ECO "A40"]
[WhiteElo "1651"]
[BlackElo "1717"]
[PlyCount "80"]
[EventDate "2018.06.15"]
[EventType "tourn"]
[EventRounds "5"]
[EventCountry "URU"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. e4 b6 2. d4 Bb7 3. Bd3 e6 4. c4 g6 5. Nf3 Bg7 6. d5 Na6 7. Nc3 Nc5 8. 0-0 Nxd3 9. Qxd3 a6 10. Bg5 f6 11. Bh4 g5 12. Bg3 e5 13. d6 Rc8 14. dxc7 Qxc7 15. b3 Ne7 16. Nd5 Nxd5 17. exd5 0-0 18. Nd4 Rf7 19. Nf5 d6 20. Nxg7 Kxg7 21. Qf5 Qd7 22. Qxd7 Rxd7 23. h4 h6 24. Rae1 Rcc7 25. hxg5 hxg5 26. Re4 f5 27. Bxe5+ dxe5 28. Rxe5 Rf7 29. Rfe1 b5 30. d6 bxc4 31. bxc4 Rxc4 32. Re7 Be4 33. f3 Rxe7 34. dxe7 Kf7 35. fxe4 fxe4 36. Rf1+ Kxe7 37. Rf5 Ke6 38. Rxg5 e3 39. Kf1 Rf4+ 40. Ke2 Rf2+ 1/2-1/2

[Event "URU-ch Seniors 65"]
[Site "Montevideo"]
[Date "2018.06.17"]
[Round "4.3"]
[White "Larrea, Osvaldo"]
[Black "Rocca, Jose"]
[Result "1/2-1/2"]
[ECO "A03"]
[WhiteElo "1717"]
[BlackElo "1600"]
[PlyCount "65"]
[EventDate "2018.06.15"]
[EventType "tourn"]
[EventRounds "5"]
[EventCountry "URU"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. f4 d5 2. Nf3 c5 3. e3 e6 4. Bb5+ Bd7 5. Bxd7+ Nxd7 6. b3 Ngf6 7. Bb2 Be7 8. 0-0 0-0 9. Qe1 Ne4 10. d3 Nd6 11. Nbd2 Qb6 12. c4 dxc4 13. dxc4 Qd8 14. e4 Re8 15. Qg3 Bf8 16. Bc3 b5 17. cxb5 Nxb5 18. Bb2 Nf6 19. Rfe1 Nd4 20. Nxd4 cxd4 21. Qd3 Bc5 22. Nf3 Qb6 23. Bxd4 Rad8 24. Bxc5 Qxc5+ 25. Qe3 Nxe4 26. Qxc5 Nxc5 27. Re5 Nd3 28. Re4 Rd5 29. Ra4 a5 30. g3 Red8 31. Rf1 h6 32. Ne1 Nb2 33. Re4 1/2-1/2

[Event "URU-ch Seniors 65"]
[Site "Montevideo"]
[Date "2018.06.16"]
[Round "3.1"]
[White "Larrea, Osvaldo"]
[Black "Buscio, Jorge"]
[Result "1-0"]
[ECO "A03"]
[WhiteElo "1717"]
[BlackElo "1478"]
[PlyCount "113"]
[EventDate "2018.06.15"]
[EventType "tourn"]
[EventRounds "5"]
[EventCountry "URU"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. f4 c5 2. Nf3 Nc6 3. e3 d5 4. Bb5 a6 5. Bxc6+ bxc6 6. b3 d4 7. 0-0 g6 8. Bb2 Bg7 9. d3 Nh6 10. Qe2 0-0 11. Na3 Nf5 12. Nc4 Be6 13. Nfd2 Nxe3 14. Nxe3 dxe3 15. Bxg7 Kxg7 16. Qxe3 Qd4 17. Qxd4+ cxd4 18. Rae1 a5 19. a4 Rfe8 20. Re5 Red8 21. Rfe1 Ra7 22. Nf3 Kf6 23. Ng5 Rd5 24. Nxh7+ Kg7 25. Ng5 Rxe5 26. Rxe5 Bd5 27. Nf3 f6 28. Re1 c5 29. Nd2 e6 30. Rb1 e5 31. fxe5 fxe5 32. Rf1 Re7 33. Re1 Kf6 34. Rf1+ Kg5 35. Rf8 e4 36. dxe4 Bxe4 37. Nxe4+ Rxe4 38. Kf2 Re3 39. Rf3 Re7 40. c3 Rb7 41. cxd4 cxd4 42. Ke2 Rc7 43. Kd2 Rh7 44. h3 Rb7 45. Kc2 Rc7+ 46. Kb2 Re7 47. Rf2 d3 48. Rd2 Re2 49. Kc3 Kh4 50. Kxd3 Rxd2+ 51. Kxd2 Kg3 52. b4 Kxg2 53. bxa5 Kxh3 54. a6 g5 55. a7 g4 56. a8Q g3 57. Qh8+ 1-0

[Event "URU-ch Seniors 65"]
[Site "Montevideo"]
[Date "2018.06.16"]
[Round "2.3"]
[White "Souto, Andres"]
[Black "Larrea, Osvaldo"]
[Result "0-1"]
[ECO "B00"]
[WhiteElo "1313"]
[BlackElo "1717"]
[PlyCount "94"]
[EventDate "2018.06.15"]
[EventType "tourn"]
[EventRounds "5"]
[EventCountry "URU"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. e4 b6 2. Nc3 Bb7 3. d3 e6 4. Nf3 g6 5. d4 Bg7 6. e5 Ne7 7. Bg5 h6 8. Bxe7 Qxe7 9. Nb5 Na6 10. c3 0-0 11. Bd3 d6 12. 0-0 Nb8 13. Re1 a6 14. Na3 Nd7 15. Be4 Rab8 16. Bxb7 Rxb7 17. Nc4 d5 18. Ne3 Rc8 19. Qa4 Nb8 20. Nc2 Qd7 21. Qxd7 Nxd7 22. Nb4 c5 23. Nd3 c4 24. Nf4 b5 25. Ne2 Rcb8 26. a3 Bf8 27. Nd2 Nb6 28. Reb1 a5 29. b3 cxb3 30. Rxb3 Nc4 31. Nxc4 bxc4 32. Rxb7 Rxb7 33. f3 Rb3 34. a4 Ba3 35. Kf2 Bb2 36. Rb1 Ba3 37. Ra1 Be7 38. f4 Rb2 39. Ke1 g5 40. g3 Kg7 41. h3 gxf4 42. Nxf4 Bg5 43. Ne2 Be3 44. Kd1 f6 45. exf6+ Kxf6 46. Ke1 Kf5 47. Kf1 Ke4 0-1

[Event "URU-ch Seniors 65"]
[Site "Montevideo"]
[Date "2018.06.15"]
[Round "1.2"]
[White "Larrea, Osvaldo"]
[Black "Barcelo Fraixanet, Mario"]
[Result "1/2-1/2"]
[ECO "A03"]
[WhiteElo "1717"]
[BlackElo "1547"]
[PlyCount "44"]
[EventDate "2018.06.15"]
[EventType "tourn"]
[EventRounds "5"]
[EventCountry "URU"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. f4 d5 2. Nf3 g6 3. e3 Bg7 4. d4 Nh6 5. Bd3 0-0 6. 0-0 Bf5 7. c3 Bxd3 8. Qxd3 Nf5 9. Nbd2 Nd6 10. Re1 Nd7 11. b3 e6 12. Ba3 Re8 13. c4 Nf6 14. Bxd6 cxd6 15. Rac1 Rc8 16. Rc2 Re7 17. Rec1 Rec7 18. a3 b6 19. h3 h6 20. Nh2 Qe7 21. Nhf1 Qd7 22. Nf3 Qe7 1/2-1/2

[Event "Brazil Foz do Iguacu op"]
[Site "Foz do Iguacu"]
[Date "2018.05.20"]
[Round "9"]
[White "Larrea, Osvaldo"]
[Black "Gamarra, Ramon"]
[Result "0-1"]
[ECO "A03"]
[WhiteElo "1737"]
[BlackElo "1925"]
[PlyCount "79"]
[EventDate "2018.05.16"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. f4 d5 2. Nf3 g6 3. e3 Bg7 4. Be2 c5 5. 0-0 Nc6 6. c3 Nf6 7. d4 c4 8. Ne5 Qd6 9. Nd2 0-0 10. Qe1 b5 11. Nxc6 Qxc6 12. a3 Bf5 13. Nf3 Be4 14. Ne5 Qb7 15. Bd2 e6 16. Bf3 a5 17. Qh4 Qc7 18. g4 Bxf3 19. Nxf3 Ne4 20. Ng5 Nf6 21. Rf3 h6 22. Nh3 Ne4 23. Qe1 Rfb8 24. Nf2 Nd6 25. e4 dxe4 26. Nxe4 Qc6 27. Re3 Nc8 28. Ng3 Nb6 29. f5 Nd5 30. Re2 exf5 31. gxf5 Kh7 32. Qf2 b4 33. Rf1 bxc3 34. bxc3 Rb3 35. fxg6+ fxg6 36. Ne4 Rf8 37. Qh4 Rxf1+ 38. Kxf1 Nf6 39. Ng5+ Kg8 40. Ne6 0-1

[Event "Brazil Foz do Iguacu op"]
[Site "Foz do Iguacu"]
[Date "2018.05.19"]
[Round "7"]
[White "De Lima, Joel Maximino"]
[Black "Larrea, Osvaldo"]
[Result "0-1"]
[ECO "B00"]
[BlackElo "1737"]
[PlyCount "78"]
[EventDate "2018.05.16"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "CBM 184 Extra"]
[Source "ChessBase"]
[SourceDate "2018.06.28"]
[SourceVersion "1"]
[SourceVersionDate "2018.06.28"]
[SourceQuality "1"]

1. e4 b6 2. Bc4 Bb7 3. d3 e6 4. Nc3 Nf6 5. Bd2 d6 6. Nf3 Nbd7 7. 0-0 Ng4 8. Nd4 Nge5 9. Bb3 a6 10. Nf3 Be7 11. Nxe5 Nxe5 12. Re1 Ng6 13. a4 Bg5 14. a5 b5 15. Nb1 e5 16. c4 Bxd2 17. Nxd2 c5 18. Nf1 b4 19. Ba4+ Kf8 20. Bc2 h5 21. Ne3 Bc8 22. h3 Qg5 23. Nd5 Bxh3 24. Qf3 Bg4 25. Qe3 Nf4 26. Kf1 h4 27. f3 Be6 28. Nxf4 exf4 29. Qg1 h3 30. Re2 hxg2+ 31. Rxg2 Bh3 32. Qf2 Bxg2+ 33. Qxg2 Qxg2+ 34. Kxg2 f6 35. Ba4 Ke7 36. Rd1 Rad8 37. d4 Rh5 38. d5 Rdh8 39. b3 Rh2+ 0-1

[Event "Brazil Foz do Iguacu op"]
[Site "Foz do Iguacu"]
[Date "2018.05.19"]
[Round "8"]
[White "Monteiro, Daniel Zotelli"]
[Black "Larrea, Osvaldo"]
[Result "1/2-1/2"]
[ECO "B00"]
[WhiteElo "1374"]
[BlackElo "1737"]
[PlyCount "76"]
[EventDate "2018.05.16"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. e4 b6 2. d4 Bb7 3. Bd3 f5 4. Nd2 Nf6 5. f3 fxe4 6. Nxe4 e6 7. Bg5 Be7 8. Nxf6+ Bxf6 9. Be3 Nc6 10. c3 Ne7 11. Ne2 Nf5 12. Bxf5 exf5 13. 0-0 0-0 14. f4 Qe7 15. Bd2 Rae8 16. Rf2 Bh4 17. Ng3 Bxg3 18. hxg3 Rf6 19. Qb3+ Kh8 20. Re1 Re6 21. Rxe6 Qxe6 22. Qxe6 Rxe6 23. Kf1 Kg8 24. c4 Re4 25. Bc3 Re3 26. Re2 Rxg3 27. d5 Kf7 28. Kf2 Rg4 29. g3 b5 30. Re5 g6 31. d6 cxd6 32. Rxb5 Bc6 33. Ra5 h5 34. b4 h4 35. b5 Be4 36. gxh4 Rxh4 37. Bd2 Rh2+ 38. Ke3 Rh3+ 1/2-1/2

[Event "Brazil Foz do Iguacu op"]
[Site "Foz do Iguacu"]
[Date "2018.05.18"]
[Round "6"]
[White "Larrea, Osvaldo"]
[Black "Ermel, Francisco Roberto"]
[Result "0-1"]
[ECO "A03"]
[WhiteElo "1737"]
[PlyCount "65"]
[EventDate "2018.05.16"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "CBM 184 Extra"]
[Source "ChessBase"]
[SourceDate "2018.06.28"]
[SourceVersion "1"]
[SourceVersionDate "2018.06.28"]
[SourceQuality "1"]

1. f4 d5 2. Nf3 g6 3. e3 Bg7 4. Nc3 c5 5. Bb5+ Nc6 6. Bxc6+ bxc6 7. 0-0 Nf6 8. Na4 Qa5 9. b3 Ba6 10. Re1 Nd7 11. Bb2 Bxb2 12. Nxb2 0-0 13. Na4 Qc7 14. Ng5 e5 15. fxe5 Qxe5 16. Qg4 Rad8 17. Qh4 Qg7 18. Rab1 Rfe8 19. Nc3 h6 20. Nf3 Nb6 21. Na4 g5 22. Qf2 Nxa4 23. bxa4 Qf6 24. Qg3 Qd6 25. Qxd6 Rxd6 26. Rb2 Rde6 27. Reb1 Kg7 28. Ne1 d4 29. Rb3 dxe3 30. dxe3 Rxe3 31. Nf3 Kf6 32. Rc1 R8e7 33. c4 0-1

[Event "Brazil Foz do Iguacu op"]
[Site "Foz do Iguacu"]
[Date "2018.05.18"]
[Round "5"]
[White "Nunes, Sidney Jr"]
[Black "Larrea, Osvaldo"]
[Result "1-0"]
[ECO "B00"]
[WhiteElo "2050"]
[BlackElo "1737"]
[PlyCount "79"]
[EventDate "2018.05.16"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "CBM 184 Extra"]
[Source "ChessBase"]
[SourceDate "2018.06.28"]
[SourceVersion "1"]
[SourceVersionDate "2018.06.28"]
[SourceQuality "1"]

1. e4 b6 2. d4 Bb7 3. Nc3 e6 4. Bd3 Bb4 5. Nf3 Bxc3+ 6. bxc3 Ne7 7. 0-0 d6 8. Re1 Nd7 9. a4 a5 10. Bf4 Ng6 11. Bg3 0-0 12. h4 h5 13. Ng5 Nf6 14. f4 Ng4 15. Be2 f5 16. Bxg4 fxg4 17. Nxe6 Qe7 18. d5 Rf7 19. Qd2 Bc8 20. Ng5 Rf8 21. Rf1 Ba6 22. Rf2 Rae8 23. Qd4 Bc8 24. Raf1 Ba6 25. Re1 Bc8 26. Qc4 Rf6 27. Ref1 Kh8 28. Qd3 Nf8 29. e5 Rf5 30. e6 g6 31. Re2 Qf6 32. c4 Re7 33. Be1 Rg7 34. e7 Rxe7 35. Rxe7 Qxe7 36. Bc3+ Kg8 37. Qd4 Rxg5 38. Qh8+ Kf7 39. fxg5+ Ke8 40. Re1 1-0

[Event "Brazil Foz do Iguacu op"]
[Site "Foz do Iguacu"]
[Date "2018.05.17"]
[Round "4"]
[White "Larrea, Osvaldo"]
[Black "Vera Dielma, Milena"]
[Result "1-0"]
[ECO "A03"]
[WhiteElo "1737"]
[PlyCount "38"]
[EventDate "2018.05.16"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "CBM 184 Extra"]
[Source "ChessBase"]
[SourceDate "2018.06.28"]
[SourceVersion "1"]
[SourceVersionDate "2018.06.28"]
[SourceQuality "1"]

1. f4 Nf6 2. Nf3 e6 3. e3 d5 4. b3 Nc6 5. Bb5 Bb4 6. Bxc6+ bxc6 7. Bb2 Ne4 8. a3 Ba5 9. 0-0 Ba6 10. d3 Bb6 11. Qe1 Nc5 12. Qc3 Rg8 13. Nbd2 Nd7 14. Rfe1 Qe7 15. Ne5 Qh4 16. Qxc6 0-0-0 17. Nxd7 Bb7 18. Nxb6+ axb6 19. Qa4 Qg4 1-0

[Event "Brazil Foz do Iguacu op"]
[Site "Foz do Iguacu"]
[Date "2018.05.17"]
[Round "3"]
[White "Urquiza, Marcello de Albuque"]
[Black "Larrea, Osvaldo"]
[Result "1-0"]
[ECO "C21"]
[WhiteElo "2092"]
[BlackElo "1737"]
[PlyCount "64"]
[EventDate "2018.05.16"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "CBM 184 Extra"]
[Source "ChessBase"]
[SourceDate "2018.06.28"]
[SourceVersion "1"]
[SourceVersionDate "2018.06.28"]
[SourceQuality "1"]

1. e4 e5 2. d4 d5 3. Nd2 Nf6 4. dxe5 Nfd7 5. Bd3 c5 6. c3 Nc6 7. Ne2 Qb6 8. Nf3 Be7 9. 0-0 c4 10. Bc2 f6 11. Nf4 Nd8 12. exf6 Nxf6 13. Ne5 0-0 14. Qf3 Bd6 15. b3 cxb3 16. axb3 Qc7 17. Ba3 Nf7 18. Bxd6 Nxd6 19. Qd3 Nfxe4 20. Ne2 Nf7 21. f3 Nf6 22. Ng4 Ng5 23. Nxf6+ Rxf6 24. h4 Rh6 25. hxg5 Qh2+ 26. Kf2 Qh4+ 27. g3 Qxg5 28. Rh1 g6 29. f4 Rxh1 30. fxg5 Rxa1 31. Nf4 d4 32. cxd4 Bf5 1-0

[Event "Brazil Foz do Iguacu op"]
[Site "Foz do Iguacu"]
[Date "2018.05.16"]
[Round "2"]
[White "Larrea, Osvaldo"]
[Black "Rios Acosta, Facundo"]
[Result "1-0"]
[ECO "A02"]
[WhiteElo "1737"]
[PlyCount "25"]
[EventDate "2018.05.16"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "CBM 184 Extra"]
[Source "ChessBase"]
[SourceDate "2018.06.28"]
[SourceVersion "1"]
[SourceVersionDate "2018.06.28"]
[SourceQuality "1"]

1. f4 Nf6 2. Nf3 e6 3. e3 Bc5 4. b3 0-0 5. Bb2 Nc6 6. Bb5 d6 7. Bxc6 bxc6 8. 0-0 Ba6 9. Re1 e5 10. fxe5 dxe5 11. Bxe5 Ng4 12. Bd4 Bd3 13. h3 1-0

[Event "Brazil Foz do Iguacu op"]
[Site "Foz do Iguacu"]
[Date "2018.05.16"]
[Round "1"]
[White "Terao, Juliana Sayumi"]
[Black "Larrea, Osvaldo"]
[Result "1-0"]
[ECO "B00"]
[WhiteElo "2255"]
[BlackElo "1737"]
[PlyCount "71"]
[EventDate "2018.05.16"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BRA"]
[SourceTitle "CBM 184 Extra"]
[Source "ChessBase"]
[SourceDate "2018.06.28"]
[SourceVersion "1"]
[SourceVersionDate "2018.06.28"]
[SourceQuality "1"]

1. e4 b6 2. d4 Bb7 3. Bd3 e6 4. Nf3 g6 5. 0-0 Bg7 6. Bg5 Ne7 7. Qd2 d6 8. Bh6 0-0 9. Nc3 Nd7 10. Rad1 Re8 11. Rfe1 a6 12. a4 c5 13. Bxg7 Kxg7 14. dxc5 dxc5 15. Bxa6 Rxa6 16. Qxd7 Qxd7 17. Rxd7 Bc6 18. Rd6 Bxa4 19. Nxa4 Rxa4 20. Rxb6 Rb4 21. Rxb4 cxb4 22. Rd1 Rc8 23. Rd2 Rc4 24. Re2 Nc6 25. Kf1 Kf6 26. Ke1 Na7 27. Kd2 Nb5 28. Kd3 Rc8 29. e5+ Ke7 30. Re4 b3 31. c4 Nc7 32. Nd4 Na6 33. Re1 Nc5+ 34. Kc3 Na4+ 35. Kxb3 Nxb2 36. Kxb2 1-0

[Event "URU-chT Provinces"]
[Site "Montevideo"]
[Date "2017.08.27"]
[Round "5.3"]
[White "Mordetzki, Ariel"]
[Black "Larrea, Osvaldo"]
[Result "0-1"]
[ECO "B00"]
[WhiteElo "1540"]
[BlackElo "1779"]
[PlyCount "155"]
[EventDate "2017.08.25"]
[EventType "team-swiss"]
[EventRounds "5"]
[EventCountry "URU"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]
[WhiteTeam "Montevideo VI"]
[BlackTeam "San Jose"]
[WhiteTeamCountry "URU"]
[BlackTeamCountry "URU"]

1. e4 b6 2. d4 Bb7 3. Bd3 e6 4. Nf3 g6 5. Bg5 Be7 6. Bxe7 Qxe7 7. 0-0 d6 8. c4 c5 9. d5 e5 10. Nc3 Bc8 11. a4 a5 12. Nb5 Ba6 13. Qb3 Qd7 14. Ne1 Bxb5 15. Qxb5 Qxb5 16. axb5 Nd7 17. Nc2 Ne7 18. b4 cxb4 19. Nxb4 Nc5 20. Bc2 Kd7 21. Nc6 Rhc8 22. f4 exf4 23. Rxf4 Rf8 24. Raf1 Ke8 25. Rf6 Nc8 26. e5 Nd7 27. R6f2 dxe5 28. Re2 f6 29. Nd4 Ke7 30. Ne6 Rf7 31. Be4 Nd6 32. Bf3 Rc8 33. Rc2 Nc5 34. Nxc5 Rxc5 35. Rfc1 Rf8 36. Bg4 f5 37. Be2 Rfc8 38. Kf2 R8c7 39. Ke3 Nxb5 40. Rb2 Nd4 41. Rxb6 Nxe2 42. Kxe2 Rxc4 43. Rxc4 Rxc4 44. Rb7+ Kd6 45. Rxh7 Kxd5 46. Rg7 Rc6 47. Ra7 Rc5 48. Rg7 Rc2+ 49. Kf3 Rc3+ 50. Ke2 Rc6 51. Ra7 Ke4 52. Rxa5 Rc2+ 53. Kf1 Rd2 54. Ra3 g5 55. Rf3 g4 56. Rf2 Rd3 57. Re2+ Kd4 58. Kf2 f4 59. Ra2 g3+ 60. hxg3 Rxg3 61. Ra4+ Kd5 62. Ra5+ Ke4 63. Ra4+ Kf5 64. Ra6 Rc3 65. Ra5 Rc2+ 66. Kg1 Ke4 67. Ra4+ Kf5 68. Ra8 e4 69. Rf8+ Ke5 70. Re8+ Kd4 71. Ra8 e3 72. Ra4+ Kd3 73. Ra3+ Ke4 74. Ra4+ Kf5 75. Ra8 Rc6 76. Kf1 Rc1+ 77. Ke2 Rc2+ 78. Kf3 0-1

[Event "URU-chT Provinces"]
[Site "Montevideo"]
[Date "2017.08.26"]
[Round "4.2"]
[White "Savino, Horacio"]
[Black "Larrea, Osvaldo"]
[Result "1-0"]
[ECO "A90"]
[WhiteElo "1846"]
[BlackElo "1779"]
[PlyCount "89"]
[EventDate "2017.08.25"]
[EventType "team-swiss"]
[EventRounds "5"]
[EventCountry "URU"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]
[WhiteTeam "Montevideo Vladivostok"]
[BlackTeam "San Jose"]
[WhiteTeamCountry "URU"]
[BlackTeamCountry "URU"]

1. d4 f5 2. g3 Nf6 3. c4 e6 4. Bg2 Bb4+ 5. Bd2 Bxd2+ 6. Nxd2 0-0 7. Nh3 c6 8. 0-0 d5 9. Qc2 Na6 10. Nf4 Nc7 11. Nf3 Qe8 12. Ne5 Nh5 13. Nfd3 Rf6 14. f4 Rh6 15. Bf3 Nf6 16. Kg2 Ne4 17. e3 Qe7 18. b4 dxc4 19. Nxc4 Nd5 20. Rfe1 g5 21. Bxe4 fxe4 22. Nc5 gxf4 23. exf4 b5 24. Ne5 e3 25. a3 Bb7 26. Nxb7 Qxb7 27. Qxc6 Qxc6 28. Nxc6 Rc8 29. Rac1 Rc7 30. Rc5 a6 31. Ne5 Re7 32. Ng4 Rg6 33. Kf3 h5 34. Nxe3 Nf6 35. Nf5 Re8 36. Nd6 Re7 37. Rc8+ Kh7 38. f5 Rg4 39. Rxe6 Rxe6 40. fxe6 Rxd4 41. Nf5 Rd3+ 42. Kg2 Rxa3 43. Rf8 Kg6 44. Nh4+ Kg7 45. Rf7+ 1-0

[Event "URU-chT Provinces"]
[Site "Montevideo"]
[Date "2017.08.25"]
[Round "2.4"]
[White "Larrea, Osvaldo"]
[Black "Vazquez, Facundo"]
[Result "0-1"]
[ECO "A03"]
[WhiteElo "1779"]
[BlackElo "1865"]
[PlyCount "32"]
[EventDate "2017.08.25"]
[EventType "team-swiss"]
[EventRounds "5"]
[EventCountry "URU"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]
[WhiteTeam "San Jose"]
[BlackTeam "Montevideo II"]
[WhiteTeamCountry "URU"]
[BlackTeamCountry "URU"]

1. f4 Nf6 2. Nf3 g6 3. b3 Bg7 4. Bb2 0-0 5. e3 d5 6. Be2 c5 7. 0-0 Nc6 8. Qe1 d4 9. Bd1 Nd5 10. c4 Ndb4 11. d3 Nxd3 12. Qe2 Nxb2 13. Qxb2 dxe3 14. Ne5 Nxe5 15. fxe5 Qd4 16. Nc3 e2+ 0-1

[Event "URU-chT Provinces"]
[Site "Montevideo"]
[Date "2017.08.25"]
[Round "1.4"]
[White "Romero, Robert"]
[Black "Larrea, Osvaldo"]
[Result "1/2-1/2"]
[ECO "B22"]
[WhiteElo "1544"]
[BlackElo "1779"]
[PlyCount "100"]
[EventDate "2017.08.25"]
[EventType "team-swiss"]
[EventRounds "5"]
[EventCountry "URU"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]
[WhiteTeam "Montevideo III"]
[BlackTeam "San Jose"]
[WhiteTeamCountry "URU"]
[BlackTeamCountry "URU"]

1. e4 g6 2. Nf3 Bg7 3. d4 c5 4. c3 cxd4 5. cxd4 Nc6 6. Nc3 Qb6 7. Nd5 Qd8 8. Be2 d6 9. 0-0 Bg4 10. Be3 e6 11. Nc3 Nge7 12. Qd2 0-0 13. Rac1 Qa5 14. h3 Bxf3 15. Bxf3 Rac8 16. Rfd1 Rfd8 17. a3 Rd7 18. b4 Qd8 19. Bg4 f5 20. exf5 exf5 21. Bf3 a6 22. Nd5 Nxd5 23. Bxd5+ Kh8 24. Be6 Rcc7 25. Bxd7 Rxd7 26. Rc2 d5 27. Bg5 Qf8 28. Be3 Rf7 29. Qc1 Qe8 30. Rc5 Bf8 31. Rxd5 Qe4 32. Qc4 Re7 33. b5 axb5 34. Qxb5 f4 35. Bc1 Bg7 36. Bb2 Qc2 37. Rf1 Bf6 38. Rd6 Kg7 39. d5 Bxb2 40. dxc6 bxc6 41. Rxc6 Qd2 42. Qc4 Bd4 43. Rc7 Rxc7 44. Qxc7+ Kh6 45. a4 f3 46. gxf3 Qg5+ 47. Kh1 Be5 48. Qc4 Qf5 49. Kg2 Qg5+ 50. Kh1 Qf5 1/2-1/2

[Event "URU-chTA"]
[Site "Uruguay"]
[Date "2017.07.09"]
[Round "5.2"]
[White "Lopez, Aldi"]
[Black "Larrea, Osvaldo"]
[Result "1-0"]
[ECO "A84"]
[WhiteElo "2019"]
[BlackElo "1787"]
[PlyCount "95"]
[EventDate "2017.07.07"]
[EventType "team-swiss"]
[EventRounds "5"]
[EventCountry "URU"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]
[WhiteTeam "Cosmopolita Union"]
[BlackTeam "San Jose"]
[WhiteTeamCountry "URU"]
[BlackTeamCountry "URU"]

1. d4 f5 2. g3 Nf6 3. Bg2 e6 4. Nf3 Nc6 5. c4 Bb4+ 6. Bd2 Bxd2+ 7. Nbxd2 b6 8. 0-0 Bb7 9. Re1 0-0 10. e4 fxe4 11. Nxe4 Nxe4 12. Rxe4 Qf6 13. Rf4 Qg6 14. Qd2 Qh6 15. Rxf8+ Rxf8 16. Qxh6 gxh6 17. Rc1 Nb4 18. Ne5 Bxg2 19. Kxg2 d6 20. Nf3 Nd3 21. Rc3 Nb4 22. a3 Nc6 23. d5 Nd8 24. Nd4 e5 25. Nb5 a5 26. Nxc7 Rf7 27. Nb5 Nb7 28. b4 Rf6 29. Na7 Rf8 30. Rf3 Ra8 31. Nc6 Kg7 32. h4 axb4 33. axb4 Ra4 34. h5 Ra2 35. Ne7 Rc2 36. Nf5+ Kh8 37. Nxh6 Rxc4 38. Rf7 Nc5 39. bxc5 Rxc5 40. Rb7 b5 41. Nf7+ Kg8 42. Nxd6 Rxd5 43. Nxb5 Kf8 44. Nc3 Rd3 45. Ne4 Rd4 46. Ng5 Rd2 47. Nxh7+ Ke8 48. Nf6+ 1-0

[Event "URU-chTA"]
[Site "Uruguay"]
[Date "2017.07.07"]
[Round "1.3"]
[White "Izquierdo, Sebastian"]
[Black "Larrea, Osvaldo"]
[Result "1-0"]
[ECO "A84"]
[WhiteElo "2026"]
[BlackElo "1787"]
[PlyCount "79"]
[EventDate "2017.07.07"]
[EventType "team-swiss"]
[EventRounds "5"]
[EventCountry "URU"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]
[WhiteTeam "Mercedes"]
[BlackTeam "San Jose"]
[WhiteTeamCountry "URU"]
[BlackTeamCountry "URU"]

1. d4 f5 2. c4 Nf6 3. Nc3 b6 4. Nf3 e6 5. g3 Bb7 6. Bg2 Bb4 7. 0-0 Bxc3 8. bxc3 0-0 9. Ba3 Re8 10. c5 Nc6 11. Nd2 Na5 12. Bxb7 Nxb7 13. Nb3 Qb8 14. c4 Nd8 15. Bb2 Qb7 16. Qd3 Nf7 17. cxb6 axb6 18. d5 Nd6 19. Bxf6 gxf6 20. dxe6 dxe6 21. c5 Ne4 22. cxb6 Rad8 23. Qb5 cxb6 24. Rac1 Ng5 25. f3 Re7 26. Rc6 Ra8 27. Rxb6 Qc7 28. Rc1 Qa7 29. Kg2 Kg7 30. Rc2 Nf7 31. Nc5 Nd8 32. Qb2 Rd7 33. Nxe6+ Nxe6 34. Rxe6 Qd4 35. Qxd4 Rxd4 36. Re7+ Kg6 37. h4 Rad8 38. Rcc7 f4 39. g4 f5 40. Re6# 1-0

[Event "Montevideo Senior-ch"]
[Site "Montevideo"]
[Date "2017.06.19"]
[Round "5"]
[White "Larrea, Osvaldo"]
[Black "Barcelo Fraixanet, Mario"]
[Result "1/2-1/2"]
[ECO "A03"]
[WhiteElo "1799"]
[BlackElo "1482"]
[PlyCount "84"]
[EventDate "2017.06.17"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "URU"]
[SourceTitle "CBM 179 Extra"]
[Source "ChessBase"]
[SourceDate "2017.08.23"]
[SourceVersion "1"]
[SourceVersionDate "2017.08.23"]
[SourceQuality "1"]

1. f4 d5 2. Nf3 g6 3. e3 Bg7 4. Nc3 Nh6 5. b3 0-0 6. Bb2 b6 7. Be2 Bb7 8. 0-0 Nd7 9. Qe1 Rc8 10. Bd3 Nc5 11. Be2 Nd7 12. Qh4 Nf5 13. Qh3 f6 14. g4 Nd6 15. Nd1 Rf7 16. g5 Nf8 17. Nf2 Qd7 18. Qg2 Nf5 19. Bd3 Rb8 20. Qh3 Bc8 21. Bxf5 Qxf5 22. Qxf5 Bxf5 23. d3 c5 24. Rad1 Bc8 25. Rd2 Ne6 26. d4 cxd4 27. Bxd4 Nc7 28. h4 Rf8 29. Rc1 Be6 30. Bb2 Rbc8 31. Nd4 Rfd8 32. Nc6 Rd7 33. Ba3 Bf8 34. c4 dxc4 35. Rxd7 Bxd7 36. Rxc4 Nd5 37. Re4 fxg5 38. hxg5 Kf7 39. Nd3 Bg7 40. Nce5+ Bxe5 41. fxe5 Bf5 42. Rd4 Bxd3 1/2-1/2

[Event "Montevideo Senior-ch"]
[Site "Montevideo"]
[Date "2017.06.18"]
[Round "4"]
[White "Barandiaran, Gabriel"]
[Black "Larrea, Osvaldo"]
[Result "1-0"]
[ECO "B07"]
[WhiteElo "1866"]
[BlackElo "1799"]
[PlyCount "71"]
[EventDate "2017.06.17"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "URU"]
[SourceTitle "CBM 179 Extra"]
[Source "ChessBase"]
[SourceDate "2017.08.23"]
[SourceVersion "1"]
[SourceVersionDate "2017.08.23"]
[SourceQuality "1"]

1. e4 d6 2. Nf3 g6 3. d4 Bg7 4. c3 c6 5. Bc4 Nf6 6. Nbd2 0-0 7. 0-0 b5 8. Bb3 Nbd7 9. e5 Ne8 10. e6 fxe6 11. Ng5 Nb6 12. Bxe6+ Kh8 13. Nf7+ Rxf7 14. Bxf7 Nc7 15. Bb3 d5 16. Nf3 Qd6 17. h3 Bd7 18. Qe2 Rf8 19. Bg5 Bf6 20. Bh6 Bg7 21. Bxg7+ Kxg7 22. Rfe1 Nc8 23. Ne5 Be8 24. a4 a6 25. Rad1 Rf4 26. Rd3 Re4 27. Re3 Rxe3 28. Qxe3 Qf6 29. axb5 axb5 30. Bd1 Nd6 31. Ng4 Qf7 32. Qe5+ Kf8 33. Qh8+ Qg8 34. Qxg8+ Kxg8 35. Rxe7 Na8 36. Re6 1-0

[Event "Montevideo Senior-ch"]
[Site "Montevideo"]
[Date "2017.06.18"]
[Round "3"]
[White "Larrea, Osvaldo"]
[Black "Reolon, Victor"]
[Result "1-0"]
[ECO "A02"]
[WhiteElo "1799"]
[BlackElo "1615"]
[PlyCount "75"]
[EventDate "2017.06.17"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "URU"]
[SourceTitle "CBM 179 Extra"]
[Source "ChessBase"]
[SourceDate "2017.08.23"]
[SourceVersion "1"]
[SourceVersionDate "2017.08.23"]
[SourceQuality "1"]

1. f4 c5 2. Nf3 g6 3. e3 Bg7 4. Nc3 d5 5. Bb5+ Nc6 6. b3 a6 7. Bxc6+ bxc6 8. Bb2 Nh6 9. Qc1 Bg4 10. 0-0 Bxf3 11. Rxf3 Nf5 12. Na4 Qa5 13. Bxg7 Nxg7 14. Qb2 f6 15. Rd1 h5 16. Qa3 Ne6 17. d3 Kf7 18. Rf2 h4 19. Rdf1 Rh5 20. Qb2 Ng7 21. e4 dxe4 22. dxe4 Rd8 23. c4 Ne6 24. f5 gxf5 25. exf5 Nd4 26. Qc3 Qc7 27. Nxc5 Qe5 28. Qa5 Rg8 29. Re1 Qd6 30. Nb7 Qd7 31. Nc5 Qd6 32. Ne4 Qd7 33. Qd2 Rxg2+ 34. Kxg2 h3+ 35. Kh1 Rxf5 36. Rxf5 Qxf5 37. Qd3 Nf3 38. Nd6+ 1-0

[Event "Montevideo Senior-ch"]
[Site "Montevideo"]
[Date "2017.06.17"]
[Round "2"]
[White "Izquierdo, Daniel"]
[Black "Larrea, Osvaldo"]
[Result "1-0"]
[ECO "A40"]
[WhiteElo "2055"]
[BlackElo "1799"]
[PlyCount "58"]
[EventDate "2017.06.17"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "URU"]
[SourceTitle "CBM 179 Extra"]
[Source "ChessBase"]
[SourceDate "2017.08.23"]
[SourceVersion "1"]
[SourceVersionDate "2017.08.23"]
[SourceQuality "1"]

1. d4 b6 2. Nf3 Bb7 3. e3 g6 4. h4 h5 5. Bd3 Nf6 6. Nc3 d6 7. e4 Bh6 8. e5 dxe5 9. dxe5 Bxc1 10. Rxc1 Nd5 11. e6 Nf4 12. Bb5+ c6 13. exf7+ Kxf7 14. Ng5+ Ke8 15. Qf3 Rf8 16. Bc4 Qc7 17. 0-0 b5 18. Bf7+ Rxf7 19. Nxf7 Kxf7 20. g3 e5 21. gxf4 exf4 22. Rfe1 Nd7 23. Ne4 c5 24. Ng5+ Kg8 25. Qh3 Nf8 26. Qb3+ c4 27. Qxb5 Qc8 28. Kf1 f3 29. Re7 Nh7 1-0

[Event "Montevideo Senior-ch"]
[Site "Montevideo"]
[Date "2017.06.17"]
[Round "1"]
[White "Larrea, Osvaldo"]
[Black "Tramutolo, Gustavo"]
[Result "1-0"]
[ECO "A02"]
[WhiteElo "1799"]
[BlackElo "1411"]
[PlyCount "51"]
[EventDate "2017.06.17"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "URU"]
[SourceTitle "CBM 179 Extra"]
[Source "ChessBase"]
[SourceDate "2017.08.23"]
[SourceVersion "1"]
[SourceVersionDate "2017.08.23"]
[SourceQuality "1"]

1. f4 Nf6 2. Nf3 d6 3. b3 c6 4. Bb2 Bf5 5. e3 Nbd7 6. Be2 Qb6 7. Nd4 Be4 8. 0-0 h6 9. Nc3 Bg6 10. Na4 Qc7 11. Bf3 0-0-0 12. c4 Ne4 13. d3 Nec5 14. f5 e5 15. fxg6 exd4 16. Bxd4 fxg6 17. b4 Ne6 18. Bc3 d5 19. cxd5 Ng5 20. dxc6 Nxf3+ 21. Qxf3 bxc6 22. Rac1 Nf6 23. Bxf6 gxf6 24. Rxc6 Bxb4 25. Rxc7+ Kxc7 26. Rc1+ 1-0

[Event "Montevideo Duchamp Cup 1st"]
[Site "Montevideo"]
[Date "2017.02.15"]
[Round "9"]
[White "Larrea, Osvaldo"]
[Black "Mordetzki, Ariel"]
[Result "1/2-1/2"]
[ECO "A03"]
[WhiteElo "1768"]
[PlyCount "32"]
[EventDate "2017.02.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "URU"]
[SourceTitle "CBM 176 Extra"]
[Source "ChessBase"]
[SourceDate "2017.03.02"]
[SourceVersion "1"]
[SourceVersionDate "2017.03.02"]
[SourceQuality "1"]

1. f4 Nf6 2. Nf3 d5 3. e3 c5 4. Bb5+ Bd7 5. Bxd7+ Nbxd7 6. b3 e6 7. Bb2 Be7 8. 0-0 0-0 9. Qe1 Qc7 10. Qg3 Rfe8 11. d3 Bf8 12. Ne5 Nxe5 13. Bxe5 Qd8 14. Nd2 g6 15. Nf3 Bg7 16. Bb2 Nh5 1/2-1/2

[Event "Montevideo Duchamp Cup 1st"]
[Site "Montevideo"]
[Date "2017.02.13"]
[Round "7"]
[White "Delbono Menoni, Ruben"]
[Black "Larrea, Osvaldo"]
[Result "0-1"]
[ECO "A10"]
[WhiteElo "1626"]
[BlackElo "1768"]
[PlyCount "98"]
[EventDate "2017.02.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "URU"]
[SourceTitle "CBM 176 Extra"]
[Source "ChessBase"]
[SourceDate "2017.03.02"]
[SourceVersion "1"]
[SourceVersionDate "2017.03.02"]
[SourceQuality "1"]

1. c4 f5 2. g3 Nf6 3. Bg2 e6 4. e3 Nc6 5. Ne2 b6 6. Nbc3 Bb7 7. a3 Be7 8. 0-0 0-0 9. b4 a6 10. Bb2 Qe8 11. d4 Nd8 12. f3 Qh5 13. Nf4 Qh6 14. Bc1 g5 15. Nh3 Qh5 16. e4 h6 17. e5 Nh7 18. d5 Qg6 19. d6 cxd6 20. exd6 Bf6 21. Bb2 Rc8 22. Qe2 Qg7 23. Rac1 Nf7 24. Rfd1 Ne5 25. Na4 g4 26. fxg4 Bxg2 27. Kxg2 Nxg4 28. Bxf6 Nhxf6 29. Nxb6 Rc6 30. c5 h5 31. Kf3 Ne4 32. Rg1 Qd4 33. Rc4 Ne5+ 34. Kg2 Nxc4 35. Nxc4 Qd5 36. Kf1 Qxc4 37. Qxc4 Nd2+ 38. Ke2 Nxc4 39. Nf4 Nxa3 40. Nxh5 Nc2 41. Rb1 Kf7 42. Nf4 Rb8 43. Nd3 Na3 44. Rb3 Nb5 45. Ne5+ Kf6 46. Nxc6 dxc6 47. Kd3 Rh8 48. h4 Rg8 49. Kc4 Rg4+ 0-1

[Event "Montevideo Duchamp Cup 1st"]
[Site "Montevideo"]
[Date "2017.02.12"]
[Round "5"]
[White "Larrea, Osvaldo"]
[Black "Abadal, Marcelo"]
[Result "0-1"]
[ECO "A03"]
[WhiteElo "1768"]
[BlackElo "1897"]
[PlyCount "80"]
[EventDate "2017.02.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "URU"]
[SourceTitle "CBM 176 Extra"]
[Source "ChessBase"]
[SourceDate "2017.03.02"]
[SourceVersion "1"]
[SourceVersionDate "2017.03.02"]
[SourceQuality "1"]

1. f4 d5 2. Nf3 g6 3. e3 Bg7 4. Nc3 Nf6 5. b3 0-0 6. Bb2 c5 7. Be2 b6 8. 0-0 Bb7 9. Qe1 Nc6 10. Nd1 Nb4 11. Bd3 c4 12. bxc4 dxc4 13. a3 Nxd3 14. cxd3 Qxd3 15. Nc3 Ne4 16. Qc1 Nc5 17. Ne1 Qf5 18. Qc2 Qxc2 19. Nxc2 Nd3 20. Ra2 Rfd8 21. Ba1 Nc5 22. Nb1 Nb3 23. Bxg7 Kxg7 24. Na1 Nxa1 25. Rxa1 Rd3 26. Ra2 Rad8 27. Rf2 Ba6 28. Nc3 Bb7 29. Kf1 Bc6 30. Ke1 b5 31. Rb2 a5 32. Nb1 Rb8 33. Kd1 b4 34. axb4 axb4 35. Kc1 Rb7 36. Ra2 Rb3 37. Rb2 Rxb2 38. Kxb2 Be4 39. Re2 c3+ 40. Kc1 c2 0-1

[Event "Montevideo Duchamp Cup 1st"]
[Site "Montevideo"]
[Date "2017.02.11"]
[Round "4"]
[White "Genta, Alejandro"]
[Black "Larrea, Osvaldo"]
[Result "1-0"]
[ECO "A85"]
[WhiteElo "2054"]
[BlackElo "1768"]
[PlyCount "53"]
[EventDate "2017.02.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "URU"]
[SourceTitle "CBM 176 Extra"]
[Source "ChessBase"]
[SourceDate "2017.03.02"]
[SourceVersion "1"]
[SourceVersionDate "2017.03.02"]
[SourceQuality "1"]

1. d4 f5 2. c4 Nf6 3. g3 e6 4. Bg2 Bb4+ 5. Nc3 0-0 6. Nf3 Bxc3+ 7. bxc3 Nc6 8. Nd2 Rb8 9. 0-0 Na5 10. Qa4 b6 11. Re1 Bb7 12. f3 Bc6 13. Qc2 Qc8 14. e4 fxe4 15. fxe4 Qa6 16. d5 Ba8 17. e5 Nh5 18. Be4 g6 19. Bxg6 hxg6 20. Qxg6+ Ng7 21. Ne4 Rf7 22. Ng5 Rf5 23. Qh7+ Kf8 24. Ba3+ d6 25. Qh8+ Ke7 26. Qxg7+ Kd8 27. Nxe6+ 1-0

[Event "Montevideo Duchamp Cup 1st"]
[Site "Montevideo"]
[Date "2017.02.11"]
[Round "3"]
[White "Larrea, Osvaldo"]
[Black "Gaye, Gustavo"]
[Result "1/2-1/2"]
[ECO "A02"]
[WhiteElo "1768"]
[BlackElo "2061"]
[PlyCount "101"]
[EventDate "2017.02.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "URU"]
[SourceTitle "CBM 176 Extra"]
[Source "ChessBase"]
[SourceDate "2017.03.02"]
[SourceVersion "1"]
[SourceVersionDate "2017.03.02"]
[SourceQuality "1"]

1. f4 g6 2. Nf3 Bg7 3. e3 Nf6 4. Nc3 0-0 5. Bd3 d6 6. b3 Nc6 7. Bb2 a6 8. 0-0 Nb4 9. Be2 c5 10. a3 Nc6 11. Qe1 e6 12. Qh4 h6 13. Nd1 Ne4 14. Qxd8 Rxd8 15. Bxg7 Kxg7 16. d3 Nf6 17. Nd2 Rb8 18. Nf2 Nd5 19. Nd1 b5 20. e4 Nd4 21. Rf2 Nxe2+ 22. Rxe2 Nxf4 23. Rf2 e5 24. Ne3 Be6 25. Kh1 Rb7 26. g3 Nh3 27. Rff1 Rdd7 28. g4 Nf4 29. a4 Ra7 30. Ra2 Ne2 31. axb5 axb5 32. Rfa1 Rxa2 33. Rxa2 Nd4 34. Ra5 Kf6 35. Kg2 Rb7 36. Ra6 Ke7 37. Kf2 Rd7 38. Ra8 Rd8 39. Ra7+ Rd7 40. Ra8 Kf6 41. h4 Kg7 42. Ra5 h5 43. gxh5 gxh5 44. Ra6 f5 45. exf5 Nxf5 46. Nxf5+ Bxf5 47. Ke3 Kf6 48. Nf3 Be6 49. Ng5 Bf5 50. Ra8 Kg7 51. Ra5 1/2-1/2

[Event "Montevideo Duchamp Cup 1st"]
[Site "Montevideo"]
[Date "2017.02.10"]
[Round "2"]
[White "Agrasot, Antonio"]
[Black "Larrea, Osvaldo"]
[Result "0-1"]
[ECO "A81"]
[WhiteElo "1567"]
[BlackElo "1768"]
[PlyCount "88"]
[EventDate "2017.02.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "URU"]
[SourceTitle "CBM 176 Extra"]
[Source "ChessBase"]
[SourceDate "2017.03.02"]
[SourceVersion "1"]
[SourceVersionDate "2017.03.02"]
[SourceQuality "1"]

1. g3 f5 2. d4 Nf6 3. Bg2 e6 4. Nc3 Bb4 5. Bd2 Bxc3 6. bxc3 Nc6 7. Nf3 Na5 8. Bg5 0-0 9. Qd3 Qe8 10. Bxf6 Rxf6 11. e3 b6 12. Ne5 Bb7 13. Bxb7 Nxb7 14. Qe2 d6 15. Nf3 Qc6 16. 0-0 Raf8 17. c4 Rh6 18. h4 Rff6 19. Ng5 Na5 20. d5 exd5 21. cxd5 Qxd5 22. Qa6 Qb7 23. Qxb7 Nxb7 24. Rab1 Nc5 25. Rb4 Rf8 26. Rd4 Rhf6 27. Nh3 h6 28. Kg2 Re8 29. Nf4 Ne6 30. Nxe6 Rfxe6 31. h5 Re4 32. Kf3 Kf7 33. Rfd1 Kf6 34. Rxe4 Rxe4 35. Rd4 Rxd4 36. exd4 Kg5 37. c3 Kxh5 38. Kf4 Kg6 39. f3 Kf6 40. g4 fxg4 41. fxg4 g6 42. d5 g5+ 43. Ke4 Kg6 44. c4 h5 0-1

[Event "Montevideo Duchamp Cup 1st"]
[Site "Montevideo"]
[Date "2017.02.09"]
[Round "1"]
[White "Larrea, Osvaldo"]
[Black "Zuriel, Marisa"]
[Result "0-1"]
[ECO "A03"]
[WhiteElo "1768"]
[BlackElo "2245"]
[PlyCount "25"]
[EventDate "2017.02.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "URU"]
[SourceTitle "CBM 176 Extra"]
[Source "ChessBase"]
[SourceDate "2017.03.02"]
[SourceVersion "1"]
[SourceVersionDate "2017.03.02"]
[SourceQuality "1"]

1. f4 Nf6 2. Nf3 g6 3. b3 Bg7 4. Bb2 d5 5. e3 0-0 6. Be2 c5 7. 0-0 Nc6 8. a3 d4 9. Qe1 Nd5 10. exd4 cxd4 11. Qh4 d3 12. Bxg7 dxe2 13. Bxf8 0-1

[Event "URU-chTA"]
[Site "Montevideo"]
[Date "2016.09.24"]
[Round "2.53"]
[White "Martinez Tagliafico, Sergio"]
[Black "Larrea, Osvaldo"]
[Result "1-0"]
[ECO "B22"]
[BlackElo "1777"]
[PlyCount "69"]
[EventDate "2016.09.23"]
[EventType "team-swiss"]
[EventRounds "5"]
[EventCountry "URU"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nf3 c5 4. c3 cxd4 5. cxd4 Nc6 6. Nc3 d6 7. Bc4 Nf6 8. 0-0 0-0 9. h3 Qc7 10. Bb3 a6 11. Bg5 Bd7 12. Rc1 Qd8 13. Qd2 Rc8 14. Rfd1 Na5 15. e5 Nxb3 16. axb3 Ne8 17. exd6 Nxd6 18. Re1 f6 19. Bh6 Re8 20. Bxg7 Kxg7 21. d5 Nb5 22. Qe3 e6 23. dxe6 Rxe6 24. Qd2 Rxe1+ 25. Rxe1 Bc6 26. Qe3 Rc7 27. Nxb5 Bxb5 28. Nd4 Bd7 29. Rd1 Qg8 30. Qe7+ Qf7 31. Qd6 Bc8 32. Re1 b5 33. Nc6 Rb7 34. Nd8 Qd7 35. Nxb7 1-0

[Event "URU-chTA"]
[Site "Montevideo"]
[Date "2016.09.23"]
[Round "1.34"]
[White "Verguier, Jose"]
[Black "Larrea, Osvaldo"]
[Result "1-0"]
[ECO "A10"]
[WhiteElo "1891"]
[BlackElo "1777"]
[PlyCount "79"]
[EventDate "2016.09.23"]
[EventType "team-swiss"]
[EventRounds "5"]
[EventCountry "URU"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. c4 f5 2. Nc3 Nf6 3. g3 e6 4. Bg2 Bb4 5. d3 Nc6 6. Bd2 b6 7. a3 Bxc3 8. Bxc3 0-0 9. Nf3 Bb7 10. 0-0 Qe8 11. b4 Qh5 12. e3 Nd8 13. Bxf6 gxf6 14. Nd4 Qxd1 15. Rfxd1 Bxg2 16. Kxg2 c6 17. f4 Nf7 18. a4 a5 19. b5 c5 20. Nf3 Rfe8 21. Rac1 d6 22. d4 Kf8 23. d5 Ke7 24. dxe6 Kxe6 25. Rd5 Nh6 26. Nh4 Ra7 27. Re1 Rg7 28. Kf3 Rd7 29. h3 Kf7 30. Red1 Ke6 31. R1d3 Rg8 32. e4 fxe4+ 33. Kxe4 Re8 34. g4 Kf7+ 35. Kf3 Red8 36. Rh5 Kg7 37. Rdd5 Rf8 38. g5 Ng8 39. Nf5+ Kh8 40. g6 1-0

[Event "URU-ch Amateur"]
[Site "Colonia del Sacramento"]
[Date "2016.07.18"]
[Round "6.9"]
[White "De la Torre, Andres"]
[Black "Larrea, Osvaldo"]
[Result "1-0"]
[ECO "B08"]
[WhiteElo "1661"]
[BlackElo "1805"]
[PlyCount "125"]
[EventDate "2016.07.15"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "URU"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Bc4 d6 4. Nf3 Nf6 5. Nc3 c6 6. 0-0 b5 7. Bd3 0-0 8. Bd2 Bb7 9. Qc1 Nbd7 10. h3 a6 11. Bh6 c5 12. Bxg7 Kxg7 13. e5 dxe5 14. dxe5 Nd5 15. Nxd5 Bxd5 16. Be2 Qc7 17. Rd1 e6 18. Qe3 Rab8 19. Rd2 Bxf3 20. Bxf3 Nxe5 21. Rad1 Nxf3+ 22. Qxf3 Rfd8 23. Qc3+ Kg8 24. Rxd8+ Rxd8 25. Rxd8+ Qxd8 26. Qxc5 Qa5 27. c4 Qe1+ 28. Kh2 bxc4 29. Qxc4 Qxf2 30. b4 e5 31. a4 Kf8 32. b5 axb5 33. Qc8+ Kg7 34. axb5 Qf4+ 35. Kg1 e4 36. Qc3+ Kh6 37. g3 Qb8 38. Qe3+ Kg7 39. b6 f5 40. Qc3+ Kh6 41. Qc7 Qa8 42. b7 Qa1+ 43. Kf2 Qb2+ 44. Ke3 Qb3+ 45. Kd4 Qb4+ 46. Kd5 Qb5+ 47. Kd6 Qb4+ 48. Kd7 Qd4+ 49. Kc6 Qc4+ 50. Kb6 Qb4+ 51. Ka6 Qa3+ 52. Qa5 Qd6+ 53. Ka7 Qxg3 54. b8Q Qxb8+ 55. Kxb8 Kg5 56. Qe1 Kf4 57. Kc7 e3 58. Kd6 Ke4 59. Qe2 f4 60. Ke6 Kd4 61. Kf6 Ke4 62. Qg4 h5 63. Qe2 1-0

[Event "URU-ch Amateur"]
[Site "Colonia del Sacramento"]
[Date "2016.07.18"]
[Round "7.12"]
[White "Larrea, Osvaldo"]
[Black "Alonzo, Mario"]
[Result "0-1"]
[ECO "A03"]
[WhiteElo "1805"]
[PlyCount "48"]
[EventDate "2016.07.15"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "URU"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. f4 d5 2. Nf3 Nf6 3. e3 e6 4. b3 Nc6 5. Bb5 a6 6. Bxc6+ bxc6 7. Bb2 Be7 8. 0-0 0-0 9. Qe1 c5 10. Qg3 Nh5 11. Qe1 Bf6 12. Ne5 Bb7 13. g4 Bh4 14. Qe2 Nf6 15. g5 Ne4 16. d3 Nxg5 17. Qg4 d4 18. fxg5 Bxg5 19. e4 Be3+ 20. Kh1 f5 21. Qg2 fxe4 22. Rxf8+ Qxf8 23. dxe4 Bxe4 24. Qxe4 Qf1# 0-1

[Event "URU-ch Amateur"]
[Site "Colonia del Sacramento"]
[Date "2016.07.17"]
[Round "5.10"]
[White "Larrea, Osvaldo"]
[Black "Fernandez Suarez, Marcos"]
[Result "1/2-1/2"]
[ECO "A03"]
[WhiteElo "1805"]
[BlackElo "1680"]
[PlyCount "65"]
[EventDate "2016.07.15"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "URU"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. f4 Nf6 2. b3 g6 3. Bb2 Bg7 4. Nf3 0-0 5. e3 c5 6. Nc3 d5 7. Be2 d4 8. Nb5 a6 9. Na3 Nd5 10. Bc4 Nc6 11. Bxd5 Qxd5 12. 0-0 b5 13. Qe1 Bf5 14. d3 dxe3 15. Bxg7 Kxg7 16. Qxe3 Rad8 17. Rfe1 Rd6 18. Qf2 Re8 19. Nb1 Nd4 20. Re5 Nxf3+ 21. gxf3 Qd4 22. Qxd4 Rxd4 23. Rxc5 Rxf4 24. Nd2 Rc8 25. Rxc8 Bxc8 26. Re1 Kf8 27. Kg2 Rf5 28. Ne4 f6 29. c4 bxc4 30. bxc4 Bd7 31. Re2 Ra5 32. Rb2 Ra3 33. Rd2 1/2-1/2

[Event "URU-ch Amateur"]
[Site "Colonia del Sacramento"]
[Date "2016.07.17"]
[Round "4.14"]
[White "Oviedo, Mathias"]
[Black "Larrea, Osvaldo"]
[Result "0-1"]
[ECO "B22"]
[WhiteElo "1527"]
[BlackElo "1805"]
[PlyCount "74"]
[EventDate "2016.07.15"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "URU"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nf3 c5 4. Be3 Nc6 5. c3 cxd4 6. cxd4 d6 7. Bb5 Bd7 8. Nc3 a6 9. Ba4 b5 10. Bb3 Nf6 11. Qc2 Rc8 12. Qe2 b4 13. Nd5 Nxe4 14. Qd3 Nf6 15. Qxa6 Nxd5 16. Bxd5 Qa5 17. Qxa5 Nxa5 18. 0-0 e6 19. Be4 Nc4 20. b3 Nxe3 21. fxe3 0-0 22. Rac1 Bh6 23. Rxc8 Bxe3+ 24. Kh1 Rxc8 25. d5 e5 26. Re1 Rc1 27. Rxc1 Bxc1 28. Ne1 f5 29. Bd3 Bd2 30. Nc2 e4 31. Bc4 Bc3 32. a3 bxa3 33. Nxa3 Kf7 34. Bb5 Bxb5 35. Nxb5 Bb4 36. Kg1 Kf6 37. Na7 Bc5+ 0-1

[Event "URU-ch Amateur"]
[Site "Colonia del Sacramento"]
[Date "2016.07.16"]
[Round "3.18"]
[White "Larrea, Osvaldo"]
[Black "Gandara, Jorge"]
[Result "1-0"]
[ECO "A03"]
[WhiteElo "1805"]
[BlackElo "1490"]
[PlyCount "119"]
[EventDate "2016.07.15"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "URU"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. f4 e6 2. Nf3 d5 3. e3 Nf6 4. b3 b6 5. Bb2 Bb7 6. Bd3 Nc6 7. a3 g6 8. 0-0 Bg7 9. Qe1 0-0 10. Qh4 Nh5 11. Bxg7 Kxg7 12. Qh3 Qf6 13. Nc3 Qe7 14. Be2 h6 15. Nh4 Nf6 16. g4 Rh8 17. Ng2 d4 18. Nd1 Raf8 19. Bd3 Qd6 20. e4 Qd8 21. Nf2 h5 22. g5 Ng4 23. Nxg4 hxg4 24. Qxg4 Ne7 25. Rf2 Rh5 26. h4 Rfh8 27. Kf1 c5 28. Ke2 a6 29. Raf1 Bc8 30. Qg3 b5 31. f5 exf5 32. exf5 Bxf5 33. Qe5+ Kh7 34. Qf6 Rf8 35. Qxa6 Bg4+ 36. Ke1 Nf5 37. Rf4 Bh3 38. Kf2 Bxg2 39. Kxg2 Rxh4 40. Rxh4+ Nxh4+ 41. Kf2 Qxg5 42. Qxb5 Qxd2+ 43. Be2 Qe3+ 44. Ke1 Qg3+ 45. Kd1 Ng2 46. Rh1+ Kg7 47. Kc1 Qe3+ 48. Kb1 Nf4 49. Bc4 Qe4 50. Qd7 Qxh1+ 51. Kb2 Qe4 52. a4 Ne6 53. a5 d3 54. cxd3 Qd4+ 55. Qxd4+ Nxd4 56. a6 Ra8 57. Kc3 Ra7 58. b4 Ne6 59. b5 Rd7 60. b6 1-0

[Event "URU-ch Amateur"]
[Site "Colonia del Sacramento"]
[Date "2016.07.15"]
[Round "1.12"]
[White "Appoloni, Facundo Jose"]
[Black "Larrea, Osvaldo"]
[Result "1-0"]
[ECO "A85"]
[WhiteElo "1520"]
[BlackElo "1805"]
[PlyCount "119"]
[EventDate "2016.07.15"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "URU"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 f5 2. Nf3 Nf6 3. c4 e6 4. Nc3 Bb4 5. Bd2 b6 6. e3 Bb7 7. Be2 0-0 8. a3 Bxc3 9. Bxc3 Qe8 10. Qc2 Qg6 11. Rg1 d6 12. 0-0-0 Nbd7 13. h3 Ne4 14. Rdf1 Rac8 15. g4 fxg4 16. Rxg4 Qf6 17. Rxe4 Bxe4 18. Qxe4 Qf5 19. Qxf5 Rxf5 20. Nd2 Rcf8 21. Bg4 R5f6 22. d5 Ne5 23. Bxe5 dxe5 24. Bxe6+ Kh8 25. Ne4 Rg6 26. Kd2 h5 27. Ke2 Rg2 28. Nc3 a6 29. Ne4 g5 30. b4 g4 31. hxg4 hxg4 32. c5 bxc5 33. Nxc5 g3 34. Ne4 gxf2 35. Rxf2 Rgxf2+ 36. Nxf2 Rf6 37. Ng4 Rg6 38. Kf3 Rg5 39. Nxe5 Rxe5 40. e4 Kg7 41. Bc8 Re8 42. Bb7 Rb8 43. Bc6 Kf6 44. Kf4 Rh8 45. e5+ Ke7 46. Kg5 Rf8 47. a4 Rb8 48. b5 a5 49. Kf5 Rh8 50. Ke4 Rh4+ 51. Kf5 Rd4 52. d6+ cxd6 53. b6 Rb4 54. b7 dxe5 55. Bb5 Rf4+ 56. Kxe5 Rf8 57. Kd5 Rb8 58. Kc6 Kd8 59. Ba6 Rxb7 60. Bxb7 1-0

[Event "URU-ch Seniors"]
[Site "Montevideo"]
[Date "2016.06.19"]
[Round "4"]
[White "Fein, Jorge"]
[Black "Larrea, Osvaldo"]
[Result "0-1"]
[ECO "B00"]
[WhiteElo "1671"]
[BlackElo "1808"]
[PlyCount "142"]
[EventDate "2016.06.17"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "URU"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. e4 b6 2. d4 Bb7 3. Bd3 e6 4. Nf3 Be7 5. Nc3 Nf6 6. 0-0 h6 7. Re1 Bb4 8. Bd2 d6 9. a3 Bxc3 10. Bxc3 Nbd7 11. b4 0-0 12. Bd2 e5 13. d5 Nh7 14. Qc1 Re8 15. c4 Qe7 16. h3 Ndf8 17. Nh2 Bc8 18. Re3 Ng6 19. Rg3 Nf6 20. Be2 Nxe4 21. Re3 Nxd2 22. Qxd2 Qg5 23. Nf3 Qf6 24. Qc3 Nf4 25. Kh2 Qg6 26. Bf1 Bd7 27. Ng1 Nh5 28. Be2 Nf4 29. Rg3 Nxe2 30. Nxe2 Qh5 31. Ng1 Re7 32. f4 f6 33. fxe5 Qxe5 34. Qxe5 Rxe5 35. Nf3 Re3 36. Re1 Rxe1 37. Nxe1 a5 38. Re3 Kf7 39. b5 Re8 40. Rxe8 Bxe8 41. Kg3 f5 42. Kf3 Kf6 43. Nd3 g5 44. g3 Bg6 45. Nf2 Ke5 46. Ke3 f4+ 47. gxf4+ gxf4+ 48. Kd2 Kd4 49. Ng4 Bf5 50. Nxh6 Bxh3 51. Ke2 Kxc4 52. Nf7 Bg4+ 53. Kf2 Kxb5 54. Nd8 Kc5 55. Ne6+ Kxd5 56. Nxf4+ Kc4 57. Ng6 Kb3 58. Ke3 Bf5 59. Ne7 Be6 60. Nc6 Kxa3 61. Kd3 Bd7 62. Nd4 c5 63. Nc2+ Kb2 64. Ne3 Be6 65. Nd1+ Kb3 66. Nc3 Bc4+ 67. Kd2 a4 68. Ne4 a3 69. Kc1 a2 70. Nd2+ Kc3 71. Ne4+ Kd4 0-1

[Event "URU-ch Seniors"]
[Site "Montevideo"]
[Date "2016.06.19"]
[Round "5"]
[White "Larrea, Osvaldo"]
[Black "Villarreal, Julio"]
[Result "1-0"]
[ECO "A02"]
[WhiteElo "1808"]
[BlackElo "1869"]
[PlyCount "121"]
[EventDate "2016.06.17"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "URU"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. f4 e5 2. fxe5 d6 3. Nf3 g5 4. d4 g4 5. Bg5 Be7 6. Bxe7 Qxe7 7. exd6 cxd6 8. Nfd2 b6 9. e4 h5 10. Bd3 Qf6 11. Nb3 Ne7 12. Qe2 Ng6 13. Qf2 Qg5 14. N1d2 0-0 15. 0-0-0 Nf4 16. Qe3 Nxd3+ 17. Qxd3 Ba6 18. Qg3 Rc8 19. Kb1 Qg6 20. h3 gxh3 21. Qxh3 Nc6 22. Qxh5 Qxh5 23. Rxh5 Be2 24. Rg5+ Kf8 25. Re1 Ba6 26. Rh1 Ke7 27. Rh7 Rh8 28. Rxh8 Rxh8 29. a3 Rh1+ 30. Ka2 Rd1 31. c3 Bd3 32. Rg3 Bc2 33. Rf3 Rg1 34. Rf2 Bd3 35. Rf3 Be2 36. Rf2 Bg4 37. Nf3 Rh1 38. Nbd2 f6 39. Kb3 Na5+ 40. Kc2 Be6 41. d5 Bd7 42. b3 b5 43. b4 Nb7 44. Rf1 Rh8 45. Nb3 Rg8 46. Rf2 Rg4 47. Nbd2 Be8 48. Nd4 a6 49. Re2 a5 50. Nf5+ Kd7 51. Nd4 axb4 52. axb4 Kc7 53. Rf2 Bd7 54. N4f3 Rg8 55. Kd3 Rg3 56. Nf1 Rg4 57. Ne3 Rg8 58. Nd4 Nd8 59. Rxf6 Rg3 60. Ndf5 Bxf5 61. Rxf5 1-0

[Event "URU-ch Seniors"]
[Site "Montevideo"]
[Date "2016.06.18"]
[Round "3"]
[White "Larrea, Osvaldo"]
[Black "Pintos, Sergio"]
[Result "1-0"]
[ECO "A03"]
[WhiteElo "1808"]
[BlackElo "1507"]
[PlyCount "119"]
[EventDate "2016.06.17"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "URU"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. f4 d5 2. Nf3 Nf6 3. b3 e6 4. Bb2 Be7 5. e3 0-0 6. Bd3 h6 7. 0-0 Nbd7 8. Qe1 Nc5 9. Be2 a6 10. Ne5 c6 11. d3 Qb6 12. Bd4 Qc7 13. Qg3 Ncd7 14. Nd2 c5 15. Bb2 b5 16. a4 bxa4 17. Rxa4 Nb6 18. Ra2 a5 19. Rfa1 Nbd7 20. Ng4 Nxg4 21. Bxg4 Nf6 22. Be2 Bd7 23. Nf3 Bb5 24. Ne5 Rfd8 25. Qe1 d4 26. Rxa5 Rxa5 27. Qxa5 Qxa5 28. Rxa5 Be8 29. e4 Kf8 30. Nc4 g6 31. Ba3 Nd7 32. e5 Rc8 33. Bf3 f6 34. exf6 Nxf6 35. Ra7 Nd7 36. Nd2 e5 37. Bg4 Rd8 38. Bxd7 Bxd7 39. fxe5 Bg4 40. Nf3 Rc8 41. Kf2 Kf7 42. h3 Be6 43. Nxd4 h5 44. Nb5 Kf8 45. Nd6 Rc6 46. Ra5 g5 47. Bxc5 h4 48. Ne4 g4 49. hxg4 Bxg4 50. Bxe7+ Kxe7 51. Rc5 Ra6 52. d4 Ra2 53. d5 Bd1 54. Rc7+ Kd8 55. d6 Bxc2 56. Ke3 Bxb3 57. Nc5 Rxg2 58. Nb7+ Ke8 59. d7+ Ke7 60. d8Q+ 1-0

[Event "URU-ch Seniors"]
[Site "Montevideo"]
[Date "2016.06.18"]
[Round "2"]
[White "Pelaez, Diego"]
[Black "Larrea, Osvaldo"]
[Result "1-0"]
[ECO "A83"]
[WhiteElo "1666"]
[BlackElo "1808"]
[PlyCount "57"]
[EventDate "2016.06.17"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "URU"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. d4 f5 2. Nc3 Nf6 3. Bg5 e6 4. e4 fxe4 5. Nxe4 Be7 6. Bxf6 Bxf6 7. Qh5+ g6 8. Qh6 Qe7 9. Nxf6+ Qxf6 10. 0-0-0 Qf8 11. Qe3 d6 12. Bc4 Qf6 13. Re1 Kf7 14. h4 Re8 15. Rh3 Kg7 16. Nf3 h6 17. Rg3 Nd7 18. Bd3 Nf8 19. Bxg6 Nxg6 20. h5 Qf8 21. Rxg6+ Kf7 22. Rxh6 Ke7 23. Qg5+ Kd7 24. Rf6 Qh8 25. Rf7+ Kc6 26. c4 a6 27. d5+ Kb6 28. Qe3+ c5 29. dxc6+ 1-0

[Event "URU-ch Seniors"]
[Site "Montevideo"]
[Date "2016.06.17"]
[Round "1"]
[White "Larrea, Osvaldo"]
[Black "Kaciusis, Daniel"]
[Result "1/2-1/2"]
[ECO "A03"]
[WhiteElo "1808"]
[BlackElo "1526"]
[PlyCount "108"]
[EventDate "2016.06.17"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "URU"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. f4 d5 2. Nf3 c5 3. e3 Nc6 4. Bb5 Qc7 5. b3 a6 6. Bxc6+ Qxc6 7. Bb2 e6 8. 0-0 Ne7 9. Ne5 Qc7 10. Qh5 Nc6 11. Nf3 b5 12. a3 Bb7 13. Ng5 Qe7 14. d3 Bc8 15. Nf3 h6 16. Nbd2 Bd7 17. Rae1 g6 18. Qh4 Qxh4 19. Nxh4 Rg8 20. Nhf3 Bd6 21. e4 0-0-0 22. exd5 exd5 23. Ne5 Bxe5 24. Bxe5 Be6 25. Bf6 Rde8 26. Rb1 Bf5 27. Rfe1 Kd7 28. Kf2 Re6 29. Rxe6 Kxe6 30. Bb2 d4 31. h3 h5 32. Re1+ Kd7 33. Ne4 Bxe4 34. Rxe4 f5 35. Re1 b4 36. a4 Rg7 37. Bc1 Kd6 38. Kf3 Ne7 39. Bd2 Nd5 40. Re8 Re7 41. Ra8 Nc7 42. Rg8 Re6 43. Rd8+ Ke7 44. Rb8 Nd5 45. Rc8 Kd6 46. Rd8+ Kc6 47. Rc8+ Nc7 48. Rd8 Nd5 49. Rc8+ Kb6 50. Rg8 Ne3 51. Bxe3 dxe3 52. Ke2 Kc6 53. Rd8 Kc7 54. Rd5 Kc6 1/2-1/2

[Event "Punta del Este op 4th"]
[Site "Punta del Este"]
[Date "2015.11.15"]
[Round "4"]
[White "Castro, Cesar"]
[Black "Larrea, Osvaldo"]
[Result "1-0"]
[ECO "B06"]
[WhiteElo "2092"]
[BlackElo "1785"]
[PlyCount "55"]
[EventDate "2015.11.13"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "URU"]
[SourceTitle "CBM 169 Extra"]
[Source "ChessBase"]
[SourceDate "2015.12.18"]
[SourceVersion "1"]
[SourceVersionDate "2015.12.18"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nc3 d6 4. Be3 c6 5. Qd2 Qa5 6. Bc4 Nf6 7. f3 Nbd7 8. Bb3 b5 9. Nge2 Ba6 10. 0-0 0-0 11. Nd5 Qd8 12. Nxf6+ Bxf6 13. Bh6 Re8 14. f4 Bg7 15. f5 Rf8 16. Rf3 Nf6 17. fxg6 hxg6 18. Rh3 Ng4 19. Bxg7 Kxg7 20. Qg5 Qd7 21. Nf4 Rg8 22. Be6 fxe6 23. Qxg6+ Kf8 24. Nxe6+ Qxe6 25. Qxe6 b4 26. Rf3+ Nf6 27. e5 Bc8 28. Rxf6+ 1-0

[Event "Punta del Este op 4th"]
[Site "Punta del Este"]
[Date "2015.11.15"]
[Round "5"]
[White "Larrea, Osvaldo"]
[Black "Escofet Fernandez, Jaime"]
[Result "0-1"]
[ECO "A02"]
[WhiteElo "1785"]
[BlackElo "2054"]
[PlyCount "129"]
[EventDate "2015.11.13"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "URU"]
[SourceTitle "CBM 169 Extra"]
[Source "ChessBase"]
[SourceDate "2015.12.18"]
[SourceVersion "1"]
[SourceVersionDate "2015.12.18"]
[SourceQuality "1"]

1. f4 Nf6 2. Nf3 g6 3. b3 Bg7 4. Bb2 0-0 5. e3 d6 6. Bd3 Nc6 7. a3 e5 8. fxe5 Ng4 9. Be2 Ngxe5 10. Nc3 Nxf3+ 11. Bxf3 Ne5 12. 0-0 Nxf3+ 13. Qxf3 Rb8 14. Nd1 Bxb2 15. Nxb2 b6 16. Qf6 Qxf6 17. Rxf6 Bf5 18. g4 Bxg4 19. Rf4 Bd7 20. Raf1 Rbe8 21. Nd3 c5 22. c4 Bc6 23. Nf2 f5 24. h4 d5 25. Kh2 dxc4 26. bxc4 Rf7 27. Rg1 Rd7 28. h5 Kf7 29. d4 Rxe3 30. d5 Bxd5 31. cxd5 Rxd5 32. hxg6+ hxg6 33. a4 Rd2 34. Rg2 Ra3 35. Rh4 Kg7 36. Rf4 Kf7 37. Rh4 Raa2 38. Kg1 Ra1+ 39. Kh2 Rda2 40. Rh7+ Kf6 41. Rh6 Rxa4 42. Rgxg6+ Ke5 43. Rd6 Rh4+ 44. Rxh4 Kxd6 45. Rf4 Ke6 46. Kg3 b5 47. Kf3 c4 48. Ke3 Ke5 49. Rh4 Ra3+ 50. Kd2 a5 51. Nd1 Rd3+ 52. Kc2 Rg3 53. Rh8 Kd4 54. Rc8 Rg2+ 55. Kc1 Rg5 56. Ra8 a4 57. Kb2 c3+ 58. Kc1 Rg3 59. Rc8 b4 60. Rb8 Kc4 61. Kb1 Kb3 62. Rc8 Rg1 63. Kc1 a3 64. Rc5 Rxd1+ 65. Kxd1 0-1

[Event "Punta del Este op 4th"]
[Site "Punta del Este"]
[Date "2015.11.14"]
[Round "3"]
[White "Larrea, Osvaldo"]
[Black "Milans, Carlos"]
[Result "1-0"]
[ECO "A03"]
[WhiteElo "1785"]
[BlackElo "1924"]
[PlyCount "87"]
[EventDate "2015.11.13"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "URU"]
[SourceTitle "CBM 169 Extra"]
[Source "ChessBase"]
[SourceDate "2015.12.18"]
[SourceVersion "1"]
[SourceVersionDate "2015.12.18"]
[SourceQuality "1"]

1. f4 Nf6 2. Nf3 g6 3. b3 Bg7 4. Bb2 0-0 5. e3 d5 6. Be2 c5 7. 0-0 Nc6 8. Nc3 a6 9. a3 b5 10. Qe1 Bf5 11. d3 Qb6 12. Nd1 Rac8 13. Nh4 Bd7 14. Kh1 Nb8 15. Nf2 c4 16. Bd4 Qb7 17. bxc4 dxc4 18. dxc4 bxc4 19. Rb1 Qa8 20. Rb6 Bc6 21. Qa5 Nd5 22. Bxg7 Kxg7 23. Rb2 Kg8 24. Qd2 c3 25. Rxb8 Rxb8 26. Qd4 Nf6 27. Bf3 Rbc8 28. Qe5 Bxf3 29. Nxf3 Qa7 30. Nd3 Rfd8 31. e4 Qb7 32. Re1 Qc7 33. Qg5 Kg7 34. e5 Ng8 35. f5 Qb6 36. Qg3 Nh6 37. fxg6 hxg6 38. e6 Nf5 39. Qg4 f6 40. Nf4 g5 41. Nxg5 Nh6 42. Qg3 Rg8 43. Nf7+ Kh7 44. Qh3 1-0

[Event "Punta del Este op 4th"]
[Site "Punta del Este"]
[Date "2015.11.14"]
[Round "2"]
[White "Magaldi, Nelson"]
[Black "Larrea, Osvaldo"]
[Result "1/2-1/2"]
[ECO "B08"]
[WhiteElo "2037"]
[BlackElo "1785"]
[PlyCount "36"]
[EventDate "2015.11.13"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "URU"]
[SourceTitle "CBM 169 Extra"]
[Source "ChessBase"]
[SourceDate "2015.12.18"]
[SourceVersion "1"]
[SourceVersionDate "2015.12.18"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nf3 d6 4. Nc3 Nf6 5. Be2 0-0 6. 0-0 c6 7. h3 b5 8. a3 Bb7 9. Bd3 Nbd7 10. Re1 e5 11. dxe5 dxe5 12. b3 Qc7 13. Bb2 Nh5 14. g3 Rfe8 15. Qe2 Qb6 16. Kh2 a6 17. Rab1 Re7 18. Nh4 Nhf6 1/2-1/2

[Event "Punta del Este op 4th"]
[Site "Punta del Este"]
[Date "2015.11.13"]
[Round "1"]
[White "Larrea, Osvaldo"]
[Black "Estevez, Matias"]
[Result "1-0"]
[ECO "A03"]
[WhiteElo "1785"]
[PlyCount "37"]
[EventDate "2015.11.13"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "URU"]
[SourceTitle "CBM 169 Extra"]
[Source "ChessBase"]
[SourceDate "2015.12.18"]
[SourceVersion "1"]
[SourceVersionDate "2015.12.18"]
[SourceQuality "1"]

1. f4 Nf6 2. Nf3 d5 3. b3 e6 4. Bb2 Bb4 5. e3 0-0 6. Bd3 Re8 7. 0-0 Ne4 8. a3 Ba5 9. b4 Bb6 10. Nc3 c6 11. Nxe4 Nd7 12. Ng3 Nf6 13. Ne5 Re7 14. Nh5 Nxh5 15. Qxh5 h6 16. Rf3 Bc7 17. Rg3 Qf8 18. Qxh6 f6 19. Qh7# 1-0

[Event "American Continental 11th"]
[Site "Montevideo"]
[Date "2015.05.24"]
[Round "11"]
[White "Nakle, Gonzalo"]
[Black "Larrea, Osvaldo"]
[Result "1/2-1/2"]
[ECO "B08"]
[WhiteElo "1737"]
[BlackElo "1843"]
[PlyCount "104"]
[EventDate "2015.05.15"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "URU"]
[SourceTitle "CBM 167"]
[Source "ChessBase"]
[SourceDate "2015.07.13"]
[SourceVersion "1"]
[SourceVersionDate "2015.07.13"]
[SourceQuality "1"]

1. e4 g6 2. Nf3 Bg7 3. Bc4 d6 4. 0-0 Nf6 5. d4 0-0 6. Nc3 c6 7. Bg5 b5 8. Bd3 Bb7 9. d5 a6 10. Bxf6 Bxf6 11. dxc6 Nxc6 12. Nd5 Bxb2 13. Rb1 Bg7 14. a4 b4 15. Nxb4 Nxb4 16. Rxb4 Bc6 17. Nd4 Bxd4 18. Rxd4 Qb6 19. Qa1 a5 20. Rb1 Qa7 21. Qc3 Rfc8 22. Rc4 Bd7 23. Rxc8+ Rxc8 24. Qb3 Rc7 25. Qb8+ Qxb8 26. Rxb8+ Kg7 27. Bb5 Rxc2 28. Kf1 Rb2 29. Ke1 Bxb5 30. Rxb5 Ra2 31. Rxa5 Kf6 32. h4 h5 33. g3 Ke6 34. Kf1 Kd7 35. Ra7+ Ke6 36. f4 f5 37. e5 dxe5 38. fxe5 Kxe5 39. Rxe7+ Kd4 40. Re6 Rxa4 41. Kf2 g5 42. hxg5 Kd5 43. Rh6 Rg4 44. Rxh5 Ke5 45. Kf3 Ra4 46. Kg2 Rb4 47. Kh3 Ra4 48. Rh4 Ra3 49. Rf4 Ra8 50. Rf3 Rh8+ 51. Kg2 Rh5 52. g6 Rg5 1/2-1/2

[Event "American Continental 11th"]
[Site "Montevideo"]
[Date "2015.05.23"]
[Round "10"]
[White "Larrea, Osvaldo"]
[Black "De la Torre, Andres"]
[Result "1-0"]
[ECO "A02"]
[WhiteElo "1843"]
[BlackElo "1699"]
[PlyCount "139"]
[EventDate "2015.05.15"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "URU"]
[SourceTitle "CBM 167"]
[Source "ChessBase"]
[SourceDate "2015.07.13"]
[SourceVersion "1"]
[SourceVersionDate "2015.07.13"]
[SourceQuality "1"]

1. f4 b6 2. Nf3 Bb7 3. e3 g6 4. Nc3 Nf6 5. b3 Bg7 6. Bb2 0-0 7. Be2 d5 8. 0-0 c5 9. Qe1 Nc6 10. Na4 Nb4 11. Qc1 Rc8 12. a3 Nc6 13. Nc3 a6 14. Qe1 d4 15. Nd1 Nh5 16. Nh4 Nf6 17. Bf3 Nd5 18. Bxd5 Qxd5 19. e4 Qd6 20. d3 e5 21. f5 Ne7 22. Bc1 gxf5 23. Nxf5 Nxf5 24. Rxf5 Rc6 25. Qg3 Bc8 26. Rh5 Qg6 27. Rg5 Qf6 28. Nf2 Kh8 29. Ng4 Bxg4 30. Rxg4 Rg8 31. Bd2 Qe7 32. Rf1 Rg6 33. Rxg6 fxg6 34. Bg5 Qe8 35. Bf6 Qe6 36. Qf3 Qf7 37. Bxe5 Qxf3 38. Bxg7+ Kxg7 39. gxf3 Kf6 40. f4 b5 41. Kg2 a5 42. Kf3 Rb8 43. Rb1 h6 44. h4 Rb6 45. Ra1 a4 46. Ke2 g5 47. fxg5+ hxg5 48. Rf1+ Ke7 49. hxg5 b4 50. axb4 a3 51. Ra1 cxb4 52. Kd2 Kf7 53. Rf1+ Kg6 54. Kc1 Rb5 55. Rf6+ Kxg5 56. Rd6 Kf4 57. Rxd4 Ke3 58. Rd5 Rb7 59. Rc5 Rh7 60. Kb1 Rb7 61. Rc4 Kf4 62. Ka2 Ke3 63. e5 Rb6 64. Re4+ Kd2 65. e6 Rc6 66. Rxb4 Rxc2+ 67. Kxa3 Kxd3 68. Rb6 Kd4 69. Kb4 Kd5 70. Kb5 1-0

[Event "American Continental 11th"]
[Site "Montevideo"]
[Date "2015.05.22"]
[Round "9"]
[White "Arias Duran, Jorge"]
[Black "Larrea, Osvaldo"]
[Result "1/2-1/2"]
[ECO "A80"]
[WhiteElo "2138"]
[BlackElo "1843"]
[PlyCount "58"]
[EventDate "2015.05.15"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "URU"]
[SourceTitle "CBM 167"]
[Source "ChessBase"]
[SourceDate "2015.07.13"]
[SourceVersion "1"]
[SourceVersionDate "2015.07.13"]
[SourceQuality "1"]

1. d4 f5 2. Bg5 Nf6 3. Nc3 e6 4. Bxf6 Qxf6 5. e4 Bb4 6. e5 Qg6 7. Nh3 b6 8. Be2 Bxc3+ 9. bxc3 0-0 10. Bf3 Nc6 11. Nf4 Qh6 12. Qd2 Bb7 13. 0-0-0 Rab8 14. Qe3 Na5 15. g3 Bxf3 16. Qxf3 g6 17. d5 Nc4 18. Qe2 b5 19. Rd4 exd5 20. Rhd1 Rfe8 21. Rxd5 c6 22. Rxd7 Qf8 23. Nd3 Qa3+ 24. Kb1 Rxe5 25. Qxe5 Nxe5 26. Nxe5 Qxc3 27. Nf7 Re8 28. Nh6+ Kh8 29. Nf7+ Kg8 1/2-1/2

[Event "American Continental 11th"]
[Site "Montevideo"]
[Date "2015.05.19"]
[Round "6"]
[White "Croes, Octavio"]
[Black "Larrea, Osvaldo"]
[Result "1-0"]
[ECO "A92"]
[WhiteElo "1887"]
[BlackElo "1843"]
[PlyCount "51"]
[EventDate "2015.05.15"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "URU"]
[SourceTitle "CBM 167"]
[Source "ChessBase"]
[SourceDate "2015.07.13"]
[SourceVersion "1"]
[SourceVersionDate "2015.07.13"]
[SourceQuality "1"]

1. d4 f5 2. g3 Nf6 3. Bg2 e6 4. Nf3 Be7 5. c4 Bb4+ 6. Bd2 Bxd2+ 7. Nbxd2 0-0 8. 0-0 Nc6 9. Re1 Qe8 10. Qb3 Na5 11. Qc3 Nc6 12. e4 Qg6 13. Nh4 Qh5 14. exf5 exf5 15. d5 Nd8 16. Re7 Nf7 17. Rae1 f4 18. Ne4 Nxe4 19. Bxe4 fxg3 20. fxg3 Qg5 21. Bb1 Qf6 22. Qxf6 gxf6 23. c5 b6 24. d6 bxc5 25. dxc7 d6 26. Be4 1-0

[Event "American Continental 11th"]
[Site "Montevideo"]
[Date "2015.05.18"]
[Round "5"]
[White "Larrea, Osvaldo"]
[Black "Reolon, Victor"]
[Result "0-1"]
[ECO "A02"]
[WhiteElo "1843"]
[BlackElo "1711"]
[PlyCount "135"]
[EventDate "2015.05.15"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "URU"]
[SourceTitle "CBM 167"]
[Source "ChessBase"]
[SourceDate "2015.07.13"]
[SourceVersion "1"]
[SourceVersionDate "2015.07.13"]
[SourceQuality "1"]

1. f4 Nf6 2. Nf3 c5 3. e3 b6 4. b3 Bb7 5. Bb2 e6 6. Nc3 Be7 7. Be2 0-0 8. 0-0 d6 9. Qe1 Nc6 10. Qg3 Nh5 11. Qh3 Nf6 12. a3 Ne8 13. g4 g6 14. Ne4 f6 15. Ng3 Rf7 16. f5 exf5 17. gxf5 Ne5 18. Bxe5 dxe5 19. fxg6 hxg6 20. e4 Bc8 21. Qg2 Be6 22. Kh1 Nd6 23. Rg1 Kf8 24. Nh4 Rg7 25. Raf1 Ke8 26. Nh5 Rg8 27. Ng3 Kd7 28. Rf3 Kc7 29. Rd3 Qc8 30. Nf3 Nf7 31. Qf1 Qb7 32. Rc3 Rad8 33. Ba6 Qa8 34. b4 Rh8 35. bxc5 Bxc5 36. Qb5 Qc6 37. Rb1 Nd6 38. Qxc6+ Kxc6 39. Bd3 Bg4 40. Be2 Bc8 41. Kg2 Kb7 42. Rxc5 Ka8 43. Rc7 f5 44. Nxe5 Kb8 45. Rg7 Bb7 46. d3 fxe4 47. dxe4 Nxe4 48. Nxe4 Bxe4+ 49. Bf3 Rd2+ 50. Kg3 Bf5 51. Nc6+ Kc8 52. Ne7+ Kb8 53. Nxf5 gxf5 54. h4 f4+ 55. Kg4 Rh2 56. Kxf4 R2xh4+ 57. Bg4 Rf8+ 58. Ke5 Rh2 59. c4 Re8+ 60. Kd6 Rh6+ 61. Kd7 Rc8 62. Ke7 Rc7+ 63. Kf8 Rh8+ 64. Rg8 Rhh7 65. Re1 Rhf7+ 66. Ke8 Rh7 67. Re4 a5 68. Re3 0-1

[Event "American Continental 11th"]
[Site "Montevideo"]
[Date "2015.05.17"]
[Round "3"]
[White "Larrea, Osvaldo"]
[Black "Perez, Cecilia Manuela"]
[Result "0-1"]
[ECO "A02"]
[WhiteElo "1843"]
[BlackElo "1525"]
[PlyCount "114"]
[EventDate "2015.05.15"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "URU"]
[SourceTitle "CBM 167"]
[Source "ChessBase"]
[SourceDate "2015.07.13"]
[SourceVersion "1"]
[SourceVersionDate "2015.07.13"]
[SourceQuality "1"]

1. f4 f5 2. Nf3 Nf6 3. e3 e6 4. b3 c6 5. Bb2 Be7 6. Bd3 0-0 7. 0-0 d6 8. Qe1 Ne4 9. Nc3 d5 10. Ne5 Nd7 11. Nxd7 Bxd7 12. Be2 Bh4 13. g3 Be7 14. d3 Nf6 15. Bf3 Qe8 16. Rd1 Rd8 17. e4 fxe4 18. dxe4 Bc8 19. e5 Nh5 20. Qe2 g6 21. Bxh5 gxh5 22. Qd3 Rf5 23. Ne2 c5 24. Kg2 Qg6 25. Bc1 b6 26. Ng1 Bb7 27. h3 d4+ 28. Kh2 Kf7 29. Nf3 Rg8 30. Rg1 Kf8 31. Rdf1 Rf7 32. Qxg6 Rxg6 33. Ne1 Be4 34. Rf2 Rfg7 35. Re2 Bf5 36. Nd3 Bh4 37. g4 hxg4 38. hxg4 Rxg4 39. Rxg4 Rxg4 40. Rg2 Rxg2+ 41. Kxg2 Kf7 42. Bd2 Kg6 43. Kf3 h5 44. Be1 Bxe1 45. Nxe1 h4 46. Ng2 Kh5 47. Ne1 h3 48. Kg3 h2 49. Kxh2 Kg4 50. Kg2 Kxf4 51. Kf2 Kxe5 52. Kf3 Be4+ 53. Kg4 b5 54. Kg3 c4 55. bxc4 bxc4 56. Kf2 Kd5 57. Ke2 Bxc2 0-1

[Event "American Continental 11th"]
[Site "Montevideo"]
[Date "2015.05.17"]
[Round "4"]
[White "Pereira, Armando Scharlau"]
[Black "Larrea, Osvaldo"]
[Result "1/2-1/2"]
[ECO "A85"]
[WhiteElo "1717"]
[BlackElo "1843"]
[PlyCount "87"]
[EventDate "2015.05.15"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "URU"]
[SourceTitle "CBM 167"]
[Source "ChessBase"]
[SourceDate "2015.07.13"]
[SourceVersion "1"]
[SourceVersionDate "2015.07.13"]
[SourceQuality "1"]

1. Nf3 f5 2. d4 Nf6 3. g3 b6 4. Bg2 Bb7 5. 0-0 e6 6. c4 Be7 7. Nc3 0-0 8. e3 Nc6 9. a3 a6 10. b4 Qc8 11. Bb2 Nd8 12. d5 Nf7 13. Qb3 e5 14. Ne2 d6 15. Rfd1 Kh8 16. Rac1 Rb8 17. Qa2 Qd7 18. Ba1 Ne4 19. Nd2 Nxd2 20. Qxd2 Qe8 21. Qc2 Bc8 22. f4 Bf6 23. Qd2 Qe7 24. Re1 Re8 25. Kh1 Bd7 26. Ng1 Nh6 27. h3 Nf7 28. Qf2 Ra8 29. Nf3 a5 30. b5 Nd8 31. Nd2 a4 32. Kh2 Nb7 33. e4 Nc5 34. Bf1 exf4 35. exf5 fxg3+ 36. Qxg3 Be5 37. Bxe5 dxe5 38. Bd3 Qf6 39. Ne4 Qe7 40. Nxc5 Qxc5 41. Rg1 Qf8 42. Be4 Rac8 43. Rg2 Re7 44. Rf1 1/2-1/2

[Event "American Continental 11th"]
[Site "Montevideo"]
[Date "2015.05.16"]
[Round "2"]
[White "Carbone, Diego"]
[Black "Larrea, Osvaldo"]
[Result "1-0"]
[ECO "A10"]
[WhiteElo "2052"]
[BlackElo "1843"]
[PlyCount "85"]
[EventDate "2015.05.15"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "URU"]
[SourceTitle "CBM 167"]
[Source "ChessBase"]
[SourceDate "2015.07.13"]
[SourceVersion "1"]
[SourceVersionDate "2015.07.13"]
[SourceQuality "1"]

1. Nf3 f5 2. c4 Nf6 3. Nc3 b6 4. g3 Bb7 5. Bg2 e6 6. 0-0 Bb4 7. d3 Bxc3 8. bxc3 0-0 9. a4 Nc6 10. Nd4 Na5 11. Bxb7 Nxb7 12. Ba3 Rf7 13. Rb1 Ne8 14. f4 c5 15. Nf3 d6 16. e4 h6 17. Qe2 Qd7 18. e5 d5 19. cxd5 Qxd5 20. c4 Qd7 21. d4 cxd4 22. Rfd1 Qxa4 23. Bb2 d3 24. Rxd3 Qxc4 25. Rc1 Qe4 26. Re3 Qa4 27. Rc4 Qa6 28. Qc2 Nc5 29. Ba3 Rc7 30. Rec3 Rd8 31. Bxc5 bxc5 32. Kg2 Rdc8 33. Ra4 Qb6 34. Qa2 Rb8 35. Kh3 Kf7 36. Ra6 Qb2 37. Qxe6+ Kf8 38. Nh4 Rf7 39. Rxa7 Rbb7 40. Ng6+ Kg8 41. Qxe8+ Kh7 42. Ra6 Qe2 43. Qh8# 1-0

[Event "American Continental 11th"]
[Site "Montevideo"]
[Date "2015.05.15"]
[Round "1"]
[White "Larrea, Osvaldo"]
[Black "Menna Barreto, Felipe Kubiaki"]
[Result "0-1"]
[ECO "A03"]
[WhiteElo "1843"]
[BlackElo "2271"]
[PlyCount "63"]
[EventDate "2015.05.15"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "URU"]
[SourceTitle "CBM 167"]
[Source "ChessBase"]
[SourceDate "2015.07.13"]
[SourceVersion "1"]
[SourceVersionDate "2015.07.13"]
[SourceQuality "1"]

1. f4 Nf6 2. Nf3 g6 3. b3 Bg7 4. Bb2 0-0 5. e3 c5 6. Nc3 d5 7. Be2 Nc6 8. 0-0 d4 9. Na4 b6 10. Bb5 Bb7 11. Bxc6 Bxc6 12. exd4 cxd4 13. Nxd4 Bxa4 14. bxa4 Ne4 15. Nc6 Qd6 16. Bxg7 Kxg7 17. Ne5 Qd4+ 18. Kh1 Nf2+ 19. Rxf2 Qxf2 20. Nf3 Rac8 21. c3 Rfd8 22. Qb3 Qc5 23. Re1 e6 24. Re3 Qf5 25. g3 Rd3 26. Nd4 Qh3 27. Qb1 Rxe3 28. dxe3 Rxc3 29. Qa1 Kg8 30. Qe1 Ra3 31. Qd1 Rxa2 32. Nc2 0-1

[Event "Pan American-ch Seniors 50"]
[Site "Sao Paulo"]
[Date "2014.12.21"]
[Round "7"]
[White "Goncalves, Jose Antonio Silvei"]
[Black "Larrea, Osvaldo"]
[Result "1/2-1/2"]
[ECO "B00"]
[WhiteElo "2020"]
[BlackElo "1711"]
[PlyCount "28"]
[EventDate "2014.12.17"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "CBM 164 Extra"]
[Source "ChessBase"]
[SourceDate "2015.03.02"]
[SourceVersion "1"]
[SourceVersionDate "2015.03.02"]
[SourceQuality "1"]

1. e4 b6 2. d4 Bb7 3. Bd3 e6 4. Nf3 g6 5. Bg5 Be7 6. Bxe7 Qxe7 7. c3 d6 8. Nbd2 Nd7 9. Qe2 e5 10. 0-0 Ngf6 11. b4 0-0 12. a3 Nh5 13. g3 Ng7 14. Rae1 a5 1/2-1/2

[Event "Pan American-ch Seniors 50"]
[Site "Sao Paulo"]
[Date "2014.12.20"]
[Round "5"]
[White "Ashcar, Decio"]
[Black "Larrea, Osvaldo"]
[Result "1/2-1/2"]
[ECO "A01"]
[WhiteElo "1676"]
[BlackElo "1711"]
[PlyCount "72"]
[EventDate "2014.12.17"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "CBM 164 Extra"]
[Source "ChessBase"]
[SourceDate "2015.03.02"]
[SourceVersion "1"]
[SourceVersionDate "2015.03.02"]
[SourceQuality "1"]

1. b3 d6 2. Bb2 Nf6 3. e3 g6 4. Bxf6 exf6 5. c4 Bg7 6. Nc3 0-0 7. g3 c6 8. Bg2 Qa5 9. Nge2 f5 10. 0-0 Nd7 11. Rb1 Nf6 12. d4 Bd7 13. b4 Qc7 14. Qd3 a6 15. a4 Rab8 16. b5 axb5 17. axb5 Rfc8 18. Rfc1 Be8 19. Rb3 c5 20. Nd5 Qd8 21. Nef4 Bh6 22. Nxf6+ Qxf6 23. Nd5 Qd8 24. Ra1 Bd7 25. b6 Bc6 26. Ra7 Bxd5 27. Bxd5 Qe7 28. dxc5 dxc5 29. Qd1 Rd8 30. Qf3 Rd7 31. e4 fxe4 32. Qxe4 Qd6 33. Qb1 Re7 34. Rba3 Bg7 35. Qb5 Bd4 36. Ra2 Qe5 1/2-1/2

[Event "Pan American-ch Seniors 50"]
[Site "Sao Paulo"]
[Date "2014.12.20"]
[Round "6"]
[White "Larrea, Osvaldo"]
[Black "Miyoshi, Edson Mitsuro"]
[Result "1/2-1/2"]
[ECO "A02"]
[WhiteElo "1711"]
[BlackElo "2082"]
[PlyCount "70"]
[EventDate "2014.12.17"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "CBM 164 Extra"]
[Source "ChessBase"]
[SourceDate "2015.03.02"]
[SourceVersion "1"]
[SourceVersionDate "2015.03.02"]
[SourceQuality "1"]

1. f4 d6 2. Nf3 g6 3. Nc3 Bg7 4. e3 Nf6 5. b3 c6 6. Bb2 b5 7. Qe2 0-0 8. g3 a5 9. a4 Nd5 10. Nd1 Ba6 11. Bxg7 Kxg7 12. d3 bxa4 13. Rxa4 Nd7 14. Bg2 Qb6 15. 0-0 N7f6 16. h3 Bb5 17. Ra1 Ba6 18. Kh2 Rae8 19. Qd2 Nb4 20. Rf2 e5 21. f5 e4 22. Ne1 exd3 23. cxd3 d5 24. Rf4 g5 25. Rxb4 axb4 26. e4 h6 27. Qb2 d4 28. Nf2 c5 29. Nf3 Nd7 30. Qd2 f6 31. h4 Ne5 32. Nxe5 Rxe5 33. Ng4 Re7 34. hxg5 hxg5 35. e5 Bb7 1/2-1/2

[Event "Pan American-ch Seniors 50"]
[Site "Sao Paulo"]
[Date "2014.12.19"]
[Round "4"]
[White "Larrea, Osvaldo"]
[Black "De Freitas, Julio Eimard"]
[Result "1/2-1/2"]
[ECO "A02"]
[WhiteElo "1711"]
[BlackElo "1878"]
[PlyCount "90"]
[EventDate "2014.12.17"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "CBM 164 Extra"]
[Source "ChessBase"]
[SourceDate "2015.03.02"]
[SourceVersion "1"]
[SourceVersionDate "2015.03.02"]
[SourceQuality "1"]

1. f4 c5 2. Nf3 g6 3. e3 Nc6 4. Nc3 Nf6 5. b3 Bg7 6. Bb2 0-0 7. Be2 d5 8. 0-0 Ne4 9. Na4 Bxb2 10. Nxb2 d4 11. a3 dxe3 12. dxe3 Nc3 13. Qe1 Nxe2+ 14. Qxe2 Qc7 15. Rad1 Bf5 16. Rd2 Rad8 17. Rfd1 Rxd2 18. Rxd2 Rd8 19. Kf2 Bg4 20. Rxd8+ Qxd8 21. Qd2 Qxd2+ 22. Nxd2 Bf5 23. e4 Be6 24. Nf3 Bg4 25. Nd2 Nd4 26. c3 Nb5 27. Nb1 Be6 28. c4 Nd4 29. Nd2 b6 30. h3 h5 31. Nd3 Bd7 32. Ne5 Be8 33. Nd3 Bd7 34. b4 cxb4 35. axb4 Ba4 36. Nb2 Bd7 37. b5 Ne6 38. Ke3 Kg7 39. Nb3 f6 40. Na4 Kf7 41. Nd4 Nxd4 42. Kxd4 e6 43. Nc3 Ke7 44. c5 bxc5+ 45. Kxc5 g5 1/2-1/2

[Event "Pan American-ch Seniors 50"]
[Site "Sao Paulo"]
[Date "2014.12.18"]
[Round "3"]
[White "De Gois Junior, Joao Vieira"]
[Black "Larrea, Osvaldo"]
[Result "1/2-1/2"]
[ECO "A94"]
[WhiteElo "1915"]
[BlackElo "1711"]
[PlyCount "62"]
[EventDate "2014.12.17"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "CBM 164 Extra"]
[Source "ChessBase"]
[SourceDate "2015.03.02"]
[SourceVersion "1"]
[SourceVersionDate "2015.03.02"]
[SourceQuality "1"]

1. d4 f5 2. g3 Nf6 3. Bg2 e6 4. Nf3 d5 5. 0-0 Bd6 6. c4 c6 7. b3 0-0 8. Ba3 Bxa3 9. Nxa3 Qe7 10. Nb1 Na6 11. Nbd2 Ne4 12. Ne5 Nc3 13. Qe1 Nb4 14. Ndf3 Ne4 15. Qc1 Na6 16. a3 Bd7 17. Nxd7 Qxd7 18. Ne5 Qe7 19. c5 Nc7 20. f3 Nf6 21. e3 Nd7 22. Nd3 e5 23. Qd2 exd4 24. exd4 Qf6 25. Nf2 Rfe8 26. Rfd1 Re7 27. Bf1 Rae8 28. Rac1 Qe6 29. Rc3 Qf6 30. b4 a6 31. a4 Ne6 1/2-1/2

[Event "Pan American-ch Seniors 50"]
[Site "Sao Paulo"]
[Date "2014.12.18"]
[Round "2"]
[White "Larrea, Osvaldo"]
[Black "Peixoto, Helio Ricardo Souti"]
[Result "1/2-1/2"]
[ECO "A02"]
[WhiteElo "1711"]
[BlackElo "1937"]
[PlyCount "47"]
[EventDate "2014.12.17"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "CBM 164 Extra"]
[Source "ChessBase"]
[SourceDate "2015.03.02"]
[SourceVersion "1"]
[SourceVersionDate "2015.03.02"]
[SourceQuality "1"]

1. f4 c5 2. Nf3 Nc6 3. e3 g6 4. Nc3 Bg7 5. Bb5 Nf6 6. Bxc6 bxc6 7. 0-0 0-0 8. Ne2 Ba6 9. d3 Rb8 10. Ne5 Qc7 11. Rb1 d6 12. Nc4 Bxc4 13. dxc4 Qa5 14. a3 Ne4 15. b3 e6 16. Qe1 Qa6 17. a4 d5 18. cxd5 cxd5 19. Ba3 Rfc8 20. Bb2 Bxb2 21. Rxb2 c4 22. Nd4 Qd6 23. Ra2 cxb3 24. cxb3 1/2-1/2

[Event "Pan American-ch Seniors 50"]
[Site "Sao Paulo"]
[Date "2014.12.17"]
[Round "1"]
[White "Cipolli, Antonio Carlos Rodr"]
[Black "Larrea, Osvaldo"]
[Result "1-0"]
[ECO "B34"]
[WhiteElo "2112"]
[BlackElo "1711"]
[PlyCount "35"]
[EventDate "2014.12.17"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "BRA"]
[SourceTitle "CBM 164 Extra"]
[Source "ChessBase"]
[SourceDate "2015.03.02"]
[SourceVersion "1"]
[SourceVersionDate "2015.03.02"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nc3 c5 4. Nf3 cxd4 5. Nxd4 Nc6 6. Be3 Qa5 7. Qd2 Qb4 8. Ndb5 Qxb2 9. Rb1 Bxc3 10. Nxc3 Qa3 11. Nb5 Qxa2 12. Rd1 Kd8 13. Bf4 e5 14. Qd6 Nge7 15. Qc7+ Ke8 16. Nd6+ Kf8 17. Bh6+ Kg8 18. Bc4 1-0

[Event "URU-chT Departamental"]
[Site "Punta del Este"]
[Date "2014.11.09"]
[Round "5.81"]
[White "Mercado, Renee"]
[Black "Larrea, Osvaldo"]
[Result "0-1"]
[ECO "B07"]
[BlackElo "1719"]
[PlyCount "98"]
[EventDate "2014.11.07"]
[EventType "team-swiss"]
[EventRounds "5"]
[EventCountry "URU"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. c3 d6 4. h3 Nf6 5. Bd3 0-0 6. Nf3 c6 7. Be3 Re8 8. e5 Nd5 9. Bc2 Nxe3 10. fxe3 dxe5 11. dxe5 Qb6 12. Qc1 Be6 13. 0-0 Nd7 14. Nd4 Bc4 15. Na3 Bxf1 16. Qxf1 Nxe5 17. Bb3 c5 18. Nf3 Nxf3+ 19. Qxf3 Bf6 20. Qd5 e6 21. Qf3 Bg7 22. Rf1 Re7 23. Nc4 Qc7 24. e4 Rd8 25. Re1 b5 26. Ne3 c4 27. Bc2 Qc5 28. Kh1 Rd2 29. Re2 Red7 30. Nf1 Rxe2 31. Qxe2 Bh6 32. a4 a6 33. axb5 axb5 34. e5 Bf4 35. b4 Qxe5 36. Qf3 Bg5 37. Be4 Ra7 38. g3 Ra1 39. Kg2 Bf6 40. h4 Qxc3 41. Ne3 Ra2+ 42. Kh3 Bd4 43. Ng2 Qxf3 44. Bxf3 c3 45. Ne1 c2 46. Nd3 Be3 47. Bc6 c1Q 48. Nxc1 Bxc1 49. Bxb5 Rb2 0-1

[Event "URU-chT Departamental"]
[Site "Punta del Este"]
[Date "2014.11.08"]
[Round "2.71"]
[White "Larrea, Osvaldo"]
[Black "Lopez, Aldi"]
[Result "0-1"]
[ECO "A03"]
[WhiteElo "1719"]
[BlackElo "2050"]
[PlyCount "70"]
[EventDate "2014.11.07"]
[EventType "team-swiss"]
[EventRounds "5"]
[EventCountry "URU"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. f4 d5 2. Nf3 c5 3. e3 Nc6 4. Bb5 Bd7 5. Bxc6 Bxc6 6. b3 b6 7. Bb2 Nf6 8. 0-0 g6 9. Qe1 Bg7 10. d3 0-0 11. Nbd2 Qc7 12. Qh4 Rad8 13. Be5 Qc8 14. h3 Ba8 15. Nh2 c4 16. Rac1 b5 17. Ndf3 h6 18. Nd4 Qc5 19. Qf2 Qb6 20. bxc4 dxc4 21. Rb1 cxd3 22. Rxb5 Qa6 23. cxd3 Rxd4 24. Rfb1 Rxd3 25. Nf3 Bxf3 26. gxf3 Qe6 27. Kg2 Nd5 28. e4 Ne3+ 29. Kg3 Nc4 30. Qe2 Rd2 31. Qe1 Rxa2 32. Bxg7 Kxg7 33. Qc3+ f6 34. R5b4 Nd6 35. Qe3 Nf5+ 0-1

[Event "URU-chT Departamental"]
[Site "Punta del Este"]
[Date "2014.11.07"]
[Round "1.31"]
[White "Larrea, Manuel"]
[Black "Larrea, Osvaldo"]
[Result "1-0"]
[ECO "B14"]
[WhiteElo "2294"]
[BlackElo "1719"]
[PlyCount "61"]
[EventDate "2014.11.07"]
[EventType "team-swiss"]
[EventRounds "5"]
[EventCountry "URU"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. c4 Nf6 5. Nc3 g6 6. cxd5 Nxd5 7. Qb3 Nxc3 8. Bc4 e6 9. bxc3 Bg7 10. Ba3 Bf8 11. Nf3 Bxa3 12. Qxa3 Qe7 13. Qxe7+ Kxe7 14. Ne5 Nd7 15. f4 Nxe5 16. fxe5 Bd7 17. Be2 Bc6 18. 0-0 Rhd8 19. Rf4 Rac8 20. Raf1 Be8 21. R1f3 Rc7 22. Rh3 h5 23. Kf2 Bc6 24. g4 hxg4 25. Rxf7+ Kxf7 26. Rh7+ Kg8 27. Rxc7 Rd7 28. Rxd7 Bxd7 29. Bxg4 Kf7 30. d5 Ke7 31. c4 1-0

[Event "URU-chT Clubs"]
[Site "Punta del Este"]
[Date "2014.08.25"]
[Round "5.32"]
[White "Viera, Emilio"]
[Black "Larrea, Osvaldo"]
[Result "1-0"]
[ECO "A10"]
[WhiteElo "2205"]
[BlackElo "1756"]
[PlyCount "85"]
[EventDate "2014.08.23"]
[EventType "team-swiss"]
[EventRounds "5"]
[EventCountry "URU"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. c4 f5 2. Nc3 Nf6 3. g3 e6 4. Bg2 Bb4 5. e3 Bxc3 6. bxc3 0-0 7. Ne2 Nc6 8. 0-0 b6 9. Ba3 Rf7 10. Nd4 Bb7 11. d3 Qc8 12. Nf3 h6 13. Qe2 d6 14. Nd2 Ne5 15. f3 c5 16. e4 Qc6 17. f4 Ned7 18. Bf3 Qc7 19. e5 dxe5 20. fxe5 Nh7 21. d4 Rc8 22. Rae1 Ng5 23. Bxb7 Qxb7 24. h4 Nh7 25. Nf3 Re7 26. Bb2 Qc6 27. Rc1 Nhf8 28. Rfd1 Ng6 29. h5 Ngf8 30. Nh4 Nh7 31. Ng6 Ree8 32. d5 Qb7 33. d6 Ng5 34. Ne7+ Rxe7 35. dxe7 Nxe5 36. Rd8+ Kh7 37. e8Q Rxd8 38. Qxd8 Ng4 39. Qxg5 hxg5 40. Rd1 Qc7 41. Qe1 e5 42. Bc1 Kh6 43. Qe2 1-0

[Event "URU-chT Clubs"]
[Site "Punta del Este"]
[Date "2014.08.24"]
[Round "4.43"]
[White "Toledo, Javier"]
[Black "Larrea, Osvaldo"]
[Result "1-0"]
[ECO "B34"]
[BlackElo "1756"]
[PlyCount "91"]
[EventDate "2014.08.23"]
[EventType "team-swiss"]
[EventRounds "5"]
[EventCountry "URU"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nc3 c5 4. Nf3 cxd4 5. Nxd4 Nc6 6. Be3 Qa5 7. Qd2 Nf6 8. f3 0-0 9. g4 Ne5 10. Be2 d6 11. h4 h5 12. gxh5 Nxh5 13. Rg1 Nc6 14. Nb3 Qd8 15. 0-0-0 Be6 16. Bh6 Kh7 17. Bxg7 Kxg7 18. Qg5 Rh8 19. f4 Kf8 20. f5 Bxb3 21. axb3 e6 22. fxg6 Qxg5+ 23. Rxg5 Ng7 24. gxf7 Rxh4 25. Rxd6 Rd8 26. Rxd8+ Nxd8 27. Rc5 Kxf7 28. Rc7+ Kf8 29. Rd7 Nf7 30. Rxb7 Nd6 31. Rxa7 Nxe4 32. Nxe4 Rxe4 33. Bd3 Rd4 34. Ra4 Rd7 35. b4 Ke7 36. b5 Rb7 37. c4 Kd6 38. b4 Ne8 39. Ra6+ Kd7 40. c5 Rb8 41. Ra7+ Kd8 42. b6 Nd6 43. Rh7 Rb7 44. Rxb7 Nxb7 45. Kc2 Kc8 46. Ba6 1-0

[Event "URU-chT Clubs"]
[Site "Punta del Este"]
[Date "2014.08.23"]
[Round "1.33"]
[White "Larrea, Osvaldo"]
[Black "Michailov, Matias"]
[Result "0-1"]
[ECO "A03"]
[WhiteElo "1756"]
[BlackElo "2077"]
[PlyCount "60"]
[EventDate "2014.08.23"]
[EventType "team-swiss"]
[EventRounds "5"]
[EventCountry "URU"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. f4 d5 2. Nf3 Nf6 3. e3 g6 4. b3 Bg7 5. Bb2 0-0 6. Be2 c5 7. 0-0 Nc6 8. Nc3 d4 9. Na4 Nd5 10. Nxc5 dxe3 11. Bxg7 Kxg7 12. Nd3 Bf5 13. Nfe5 exd2 14. Qxd2 Qb6+ 15. Kh1 Qe3 16. Nc4 Qxd2 17. Nxd2 Ne3 18. Rfc1 Nd4 19. Bd1 Nxd1 20. Rxd1 Nxc2 21. Nf2 Nxa1 22. Rxa1 Rfd8 23. Nf3 Rac8 24. g4 Bd7 25. Kg2 Bc6 26. Re1 Bxf3+ 27. Kxf3 Rd2 28. Re3 Rcc2 29. Ne4 Rxh2 30. Ng5 h6 0-1

[Event "URU-chT Clubs"]
[Site "Punta del Este"]
[Date "2014.08.23"]
[Round "2.53"]
[White "Torres Acosta, Raul"]
[Black "Larrea, Osvaldo"]
[Result "1-0"]
[ECO "B27"]
[WhiteElo "1590"]
[BlackElo "1756"]
[PlyCount "79"]
[EventDate "2014.08.23"]
[EventType "team-swiss"]
[EventRounds "5"]
[EventCountry "URU"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. e4 g6 2. Nf3 Bg7 3. Bc4 e6 4. c3 c5 5. 0-0 Nc6 6. Re1 Qc7 7. b3 a6 8. Bb2 b5 9. Be2 Bb7 10. Qc2 Rc8 11. c4 Nd4 12. Nxd4 Bxd4 13. Bxd4 cxd4 14. Qd3 bxc4 15. Qxc4 Qxc4 16. Bxc4 Ne7 17. Na3 e5 18. Bd3 0-0 19. Nc4 Nc6 20. Nd6 Rb8 21. Nxb7 Nb4 22. Nc5 d6 23. Nxa6 Nxd3 24. Nxb8 Nxe1 25. Nd7 Rd8 26. Nf6+ Kg7 27. Nd5 Nd3 28. b4 Rb8 29. a3 f5 30. f3 Kf7 31. Kf1 Rc8 32. Ke2 Nc1+ 33. Kd1 Nd3 34. a4 fxe4 35. fxe4 Nf2+ 36. Ke2 Nxe4 37. Nb6 Rc6 38. a5 Ke6 39. a6 Rc2 40. Kd3 1-0

[Event "URU pre olympic"]
[Site "Punta del Este"]
[Date "2014.06.22"]
[Round "5"]
[White "Larrea, Osvaldo"]
[Black "Varenchak, Margarita"]
[Result "1-0"]
[ECO "A03"]
[WhiteElo "1763"]
[PlyCount "63"]
[EventDate "2014.06.20"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "URU"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. f4 d5 2. Nf3 Nc6 3. e3 Bg4 4. Bb5 Bxf3 5. Bxc6+ bxc6 6. Qxf3 Nf6 7. Nc3 e6 8. b3 Bc5 9. Bb2 0-0 10. 0-0 a5 11. Nd1 Ne4 12. Qg4 d4 13. Qe2 f5 14. d3 Nf6 15. Kh1 dxe3 16. Nxe3 Bxe3 17. Qxe3 Qd7 18. Rae1 Rae8 19. a4 Ng4 20. Qg3 Rf7 21. h3 Nf6 22. Re5 Nh5 23. Qf3 Rf6 24. Qxh5 g6 25. Qg5 Kg7 26. Rxa5 Ref8 27. Re1 Qd6 28. Bxf6+ Rxf6 29. Rae5 Qb4 30. Qg3 Kf7 31. Qe3 Qd6 32. a5 1-0

[Event "URU pre olympic"]
[Site "Punta del Este"]
[Date "2014.06.22"]
[Round "4"]
[White "Rey, Fernando"]
[Black "Larrea, Osvaldo"]
[Result "1/2-1/2"]
[ECO "B27"]
[WhiteElo "1606"]
[BlackElo "1763"]
[PlyCount "75"]
[EventDate "2014.06.20"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "URU"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nf3 c5 4. c3 cxd4 5. cxd4 Qa5+ 6. Nc3 Nf6 7. Bd3 0-0 8. 0-0 d6 9. h3 a6 10. Be3 b5 11. a3 Bb7 12. b4 Qd8 13. Qd2 Nbd7 14. Rfd1 Rc8 15. Rac1 Nb6 16. Bf4 Nc4 17. Qa2 Nh5 18. Bh2 Bh6 19. Rc2 Qb6 20. a4 Nf4 21. Bxf4 Bxf4 22. Ne2 Bh6 23. Bxc4 bxc4 24. Nc3 e6 25. Rb2 Qc7 26. Qb1 Bg7 27. Qc2 Qd7 28. Rdb1 f5 29. Re1 Rf7 30. b5 a5 31. Rbb1 Rcf8 32. Re2 h6 33. Rd1 g5 34. exf5 Rxf5 35. Nh2 Rf4 36. Qg6 R8f6 37. Qc2 Rf8 38. Qg6 1/2-1/2

[Event "URU pre olympic"]
[Site "Punta del Este"]
[Date "2014.06.21"]
[Round "3"]
[White "Larrea, Osvaldo"]
[Black "Moreira, Marcelo"]
[Result "0-1"]
[ECO "A03"]
[WhiteElo "1763"]
[BlackElo "2071"]
[PlyCount "66"]
[EventDate "2014.06.20"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "URU"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. f4 d5 2. Nf3 g6 3. e3 Bg7 4. Nc3 Nf6 5. b3 0-0 6. Bb2 c5 7. Be2 a6 8. 0-0 Qc7 9. Qc1 Nc6 10. Nd1 Bg4 11. Nf2 Bxf3 12. Bxf3 e5 13. fxe5 Nxe5 14. Be2 Rad8 15. Re1 Rfe8 16. Nd3 Ned7 17. Nf4 d4 18. Bf3 dxe3 19. dxe3 Ne5 20. e4 Nxf3+ 21. gxf3 Bh6 22. Nd5 Bxc1 23. Nxc7 Bxb2 24. Rad1 Rxd1 25. Rxd1 Rc8 26. Nd5 Nxd5 27. exd5 c4 28. d6 Rd8 29. bxc4 Ba3 30. d7 Kf8 31. Rd3 Bc5+ 32. Kf1 Ke7 33. Rd5 b6 0-1

[Event "URU pre olympic"]
[Site "Punta del Este"]
[Date "2014.06.21"]
[Round "2"]
[White "Perez, Cecilia Manuela"]
[Black "Larrea, Osvaldo"]
[Result "0-1"]
[ECO "A84"]
[WhiteElo "1507"]
[BlackElo "1763"]
[PlyCount "124"]
[EventDate "2014.06.20"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "URU"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. Nf3 f5 2. g3 Nf6 3. Bg2 e6 4. d4 Nc6 5. c4 Bb4+ 6. Bd2 Bxd2+ 7. Nbxd2 0-0 8. 0-0 Qe8 9. b3 Ne7 10. Qc2 Qh5 11. e4 fxe4 12. Nxe4 Qg6 13. Nxf6+ Qxf6 14. Rae1 Nf5 15. Qd2 d6 16. Re2 c6 17. d5 cxd5 18. cxd5 e5 19. Rc1 b6 20. Ng5 Nd4 21. Ree1 Bf5 22. f4 Rac8 23. fxe5 dxe5 24. Nf3 Rxc1 25. Rxc1 Nxf3+ 26. Bxf3 Bh3 27. Bg2 Bxg2 28. Qxg2 Qg5 29. Re1 Qe7 30. Qe4 Qc5+ 31. Qe3 Qxd5 32. Qxe5 Qf3 33. Qe2 Qf6 34. Qe6+ Qxe6 35. Rxe6 Kf7 36. Rc6 Re8 37. Kf1 Re7 38. Kf2 Ke8 39. Rc4 Kd7 40. Kf3 Kd6 41. a3 b5 42. Rh4 h6 43. Re4 Rc7 44. Re3 Rc2 45. Rd3+ Ke6 46. h4 h5 47. Kf4 Rc5 48. Re3+ Kf6 49. g4 hxg4 50. Kxg4 g6 51. Rf3+ Kg7 52. Re3 a5 53. Re7+ Kh6 54. Ra7 a4 55. bxa4 Rc4+ 56. Kg3 bxa4 57. Ra8 Rc3+ 58. Kg4 Rc4+ 59. Kg3 Rc3+ 60. Kg4 Rxa3 61. Rh8+ Kg7 62. Ra8 Ra1 0-1

[Event "URU pre olympic"]
[Site "Punta del Este"]
[Date "2014.06.20"]
[Round "1"]
[White "Larrea, Osvaldo"]
[Black "Lopez Azambuja, Nicolas"]
[Result "0-1"]
[ECO "A03"]
[WhiteElo "1763"]
[BlackElo "2242"]
[PlyCount "102"]
[EventDate "2014.06.20"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "URU"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. f4 d5 2. Nf3 g6 3. e3 Bg7 4. Nc3 Nh6 5. Bd3 c5 6. Bb5+ Bd7 7. Bxd7+ Qxd7 8. 0-0 Nc6 9. a3 0-0 10. Qe1 Rac8 11. Ne2 d4 12. Ng3 d3 13. c3 e5 14. fxe5 Nxe5 15. b3 b5 16. Rb1 Qd5 17. Qd1 Nhg4 18. Nxe5 Nxe5 19. Rf4 f5 20. a4 Bh6 21. Rf1 bxa4 22. bxa4 Rb8 23. Ba3 Nc4 24. Rxb8 Rxb8 25. Bc1 Qc6 26. Qf3 Qxf3 27. gxf3 Rb1 28. Nh1 Nb2 29. Nf2 c4 30. Bxb2 Rxb2 31. Rd1 Kf7 32. Kf1 Ke6 33. Ke1 Bg5 34. Nh3 Bh4+ 35. Kf1 g5 36. Nf2 Ra2 37. e4 Bxf2 38. Kxf2 Rxa4 39. Ke3 Ke5 40. exf5 Kxf5 41. Rb1 Ra5 42. Kd4 Kf4 43. h4 gxh4 44. Kxc4 Kxf3 45. Rh1 Rh5 46. Kxd3 Kg2 47. Rd1 h3 48. Kc4 h2 49. d4 h1Q 50. Rxh1 Rxh1 51. d5 Rd1 0-1

[Event "Horacio Arevalo Memorial"]
[Site "Colonia del Sacramento"]
[Date "2014.05.04"]
[Round "5"]
[White "Perez, Cecilia Manuela"]
[Black "Larrea, Osvaldo"]
[Result "1/2-1/2"]
[ECO "A04"]
[WhiteElo "1485"]
[BlackElo "1779"]
[PlyCount "45"]
[EventDate "2014.05.02"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "URU"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. Nf3 f5 2. g3 b6 3. Bg2 Bb7 4. 0-0 Nf6 5. d3 e6 6. Nbd2 Be7 7. Re1 0-0 8. e4 fxe4 9. Nxe4 Qe8 10. Nfg5 Nc6 11. Nxf6+ Bxf6 12. c3 Nd8 13. Bxb7 Nxb7 14. Qc2 Qg6 15. Ne4 Be7 16. Be3 Rf5 17. Re2 Qg4 18. Qd1 Raf8 19. Qf1 Rh5 20. Nd2 Qg6 21. d4 Bg5 22. f4 Be7 23. Qg2 1/2-1/2

