[Event "Bhubaneswar op 12th"]
[Site "Bhubaneswar"]
[Date "2019.05.31"]
[Round "1"]
[White "Acosta, Mariano"]
[Black "Burmakin, Vladimir"]
[Result "0-1"]
[ECO "A11"]
[WhiteElo "1819"]
[BlackElo "2519"]
[PlyCount "66"]
[EventDate "2019.05.31"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "IND"]
[SourceTitle "CBM 190 Extra"]
[Source "ChessBase"]
[SourceDate "2019.07.15"]
[SourceVersion "1"]
[SourceVersionDate "2019.07.15"]
[SourceQuality "1"]

1. Nf3 d5 2. c4 c6 3. g3 Bf5 4. cxd5 cxd5 5. Qb3 Bc8 6. Bg2 Nc6 7. 0-0 Nf6 8. d4 e6 9. Nc3 Be7 10. Rd1 0-0 11. Bg5 h6 12. Bxf6 Bxf6 13. e3 Be7 14. Rac1 Bd7 15. e4 Na5 16. Qc2 dxe4 17. Qxe4 Qb6 18. Ne5 Be8 19. b3 Bg5 20. Rc2 Rd8 21. d5 Be7 22. dxe6 Rxd1+ 23. Nxd1 Qxe6 24. b4 Qd6 25. Ne3 Qxb4 26. Qxb4 Bxb4 27. Nd3 Ba3 28. Rc7 Bd6 29. Rc8 Bd7 30. Rxf8+ Kxf8 31. f4 Bb5 32. Nf5 Ba3 33. Ne5 f6 0-1

[Event "Wch Seniors 65 28th"]
[Site "Bled"]
[Date "2018.11.29"]
[Round "11"]
[White "Acosta, Mariano"]
[Black "Pfitzer, Norbert"]
[Result "0-1"]
[ECO "A11"]
[WhiteElo "1721"]
[BlackElo "2066"]
[PlyCount "89"]
[EventDate "2018.11.18"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "SLO"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 g6 3. b3 Bg7 4. Bb2 0-0 5. g3 c6 6. Bg2 d5 7. 0-0 Nbd7 8. e3 Re8 9. cxd5 cxd5 10. d4 Ne4 11. Nbd2 Ndf6 12. Nxe4 Nxe4 13. Nd2 Nf6 14. Rc1 Bf5 15. Re1 Qd7 16. Nf3 Rac8 17. Ne5 Qd6 18. g4 Rxc1 19. Bxc1 Be6 20. f3 Rc8 21. Re2 Qc7 22. Ba3 Ne8 23. Nd3 b6 24. Nf4 Qd7 25. Nxe6 Qxe6 26. f4 Nf6 27. g5 Ne4 28. Rc2 Nc3 29. Qd3 Ne4 30. Rxc8+ Qxc8 31. Bxe4 dxe4 32. Qxe4 e6 33. Kg2 h5 34. gxh6 Bxh6 35. Bb2 Bg7 36. Ba3 Qa6 37. Bb2 Qxa2 38. Qc2 Bf8 39. d5 Bg7 40. dxe6 fxe6 41. Qxg6 Qxb2+ 42. Kf1 Qf6 43. Qe8+ Bf8 44. e4 Qf7 45. Qc8 0-1

[Event "Wch Seniors 65 28th"]
[Site "Bled"]
[Date "2018.11.28"]
[Round "10"]
[White "Nickl, Klaus"]
[Black "Acosta, Mariano"]
[Result "1/2-1/2"]
[ECO "A48"]
[WhiteElo "2006"]
[BlackElo "1721"]
[PlyCount "145"]
[EventDate "2018.11.18"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "SLO"]
[SourceTitle "CBM 187 Extra"]
[Source "ChessBase"]
[SourceDate "2018.11.04"]
[SourceVersion "1"]
[SourceVersionDate "2018.11.04"]
[SourceQuality "1"]

1. d4 g6 2. Bf4 d6 3. e3 Nf6 4. h3 Bg7 5. Nf3 0-0 6. Be2 Nbd7 7. c3 Qe8 8. 0-0 e5 9. Bh2 Qe7 10. Na3 c6 11. Nc4 Ne8 12. dxe5 dxe5 13. e4 Kh8 14. Bg3 a5 15. Bh4 f6 16. Nfd2 b6 17. f3 Ba6 18. Bf2 Rb8 19. Ne3 Bxe2 20. Qxe2 h5 21. Qc4 Qd6 22. Rfd1 Qc7 23. b4 Nd6 24. Qb3 Bh6 25. Ndc4 a4 26. Qc2 Nb5 27. Qb2 Rfd8 28. Nc2 Nf8 29. Be3 Bg7 30. N2a3 Nxa3 31. Nxa3 Ne6 32. Qc2 b5 33. Rxd8+ Qxd8 34. Rd1 Qe7 35. Rd3 Bf8 36. Qd2 Rd8 37. Rxd8 Qxd8 38. Qxd8 Nxd8 39. Kf2 Kg8 40. Ke2 Kf7 41. Kd3 Ke6 42. Bd2 Nb7 43. c4 Nd6 44. Be3 bxc4+ 45. Nxc4 Nb5 46. Bd2 f5 47. Na5 fxe4+ 48. fxe4 Kd7 49. Nc4 Ke6 50. Bc3 Bd6 51. Nb6 a3 52. Nc4 g5 53. Kc2 g4 54. hxg4 hxg4 55. Ne3 Nd4+ 56. Kd3 Nb5 57. Nxg4 c5 58. bxc5 Nxc3 59. Kxc3 Bxc5 60. Kc4 Bd4 61. Nh2 Bb2 62. Nf3 Bc1 63. Ne1 Kf6 64. Kd5 Bb2 65. Nf3 Bc3 66. g4 Bb2 67. g5+ Kg6 68. Nxe5+ Kxg5 69. Nd3 Kg4 70. Kc4 Kf3 71. e5 Ke4 72. e6 Bf6 73. Nb4 1/2-1/2

[Event "Wch Seniors 65 28th"]
[Site "Bled"]
[Date "2018.11.27"]
[Round "9"]
[White "Acosta, Mariano"]
[Black "Sorcnik, Franc"]
[Result "1/2-1/2"]
[ECO "B20"]
[WhiteElo "1721"]
[BlackElo "2028"]
[PlyCount "40"]
[EventDate "2018.11.18"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "SLO"]
[SourceTitle "CBM 187 Extra"]
[Source "ChessBase"]
[SourceDate "2018.11.04"]
[SourceVersion "1"]
[SourceVersionDate "2018.11.04"]
[SourceQuality "1"]

1. e4 c5 2. b3 e5 3. Bc4 Nf6 4. Nc3 Nc6 5. Nge2 Be7 6. d3 d6 7. Bg5 a6 8. a4 0-0 9. Bxf6 Bxf6 10. Nd5 Rb8 11. a5 Bg4 12. h3 Be6 13. Nxf6+ Qxf6 14. Qd2 Nd4 15. Nxd4 cxd4 16. 0-0 Qe7 17. f4 f6 18. f5 Bf7 19. g4 Rfd8 20. Rae1 h6 1/2-1/2

[Event "Wch Seniors 65 28th"]
[Site "Bled"]
[Date "2018.11.26"]
[Round "8"]
[White "Krstic, Slobodan"]
[Black "Acosta, Mariano"]
[Result "0-1"]
[ECO "C24"]
[WhiteElo "1993"]
[BlackElo "1721"]
[PlyCount "100"]
[EventDate "2018.11.18"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "SLO"]
[SourceTitle "CBM 187 Extra"]
[Source "ChessBase"]
[SourceDate "2018.11.04"]
[SourceVersion "1"]
[SourceVersionDate "2018.11.04"]
[SourceQuality "1"]

1. e4 e5 2. Bc4 Nf6 3. d3 c6 4. Nf3 d5 5. exd5 cxd5 6. Bb3 Nc6 7. 0-0 a5 8. Ba4 Bd6 9. Re1 Bg4 10. h3 Bxf3 11. Qxf3 0-0 12. c3 h6 13. Nd2 Qc7 14. Bc2 Rae8 15. Qd1 Re7 16. Nf1 e4 17. d4 Rd8 18. Ne3 g6 19. g3 Ree8 20. Qd2 Bf8 21. Ng2 g5 22. h4 Nh7 23. Qe2 f5 24. Bb3 Kg7 25. hxg5 hxg5 26. Qh5 Qf7 27. Qh2 Re6 28. Ne3 Rh6 29. Qg2 Kh8 30. g4 Ne7 31. gxf5 Nxf5 32. Ng4 Nh4 33. Nxh6 Nf3+ 34. Kf1 Bxh6 35. Rxe4 a4 36. Re3 Nh4 37. Qh2 axb3 38. axb3 Nf6 39. Rh3 Qh7 40. Be3 Nf5 41. Rf3 Ng4 42. Qh5 Nf6 43. Qh1 Ng4 44. Bd2 Nh4 45. Rg3 Qf5 46. Be1 Rf8 47. f3 Qd3+ 48. Kg1 Nxf3+ 49. Rxf3 Rxf3 50. Qg2 Qe3+ 0-1

[Event "Wch Seniors 65 28th"]
[Site "Bled"]
[Date "2018.11.25"]
[Round "7"]
[White "Acosta, Mariano"]
[Black "Gibbons, Robert"]
[Result "1-0"]
[ECO "C47"]
[WhiteElo "1721"]
[BlackElo "1914"]
[PlyCount "73"]
[EventDate "2018.11.18"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "SLO"]
[SourceTitle "CBM 187 Extra"]
[Source "ChessBase"]
[SourceDate "2018.11.04"]
[SourceVersion "1"]
[SourceVersionDate "2018.11.04"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. d4 exd4 5. Nxd4 Bc5 6. Be3 Nxd4 7. Bxd4 Qe7 8. Bxc5 Qxc5 9. Qd2 d6 10. f3 Be6 11. Na4 Qe5 12. c4 0-0 13. Nc3 Qc5 14. Na4 Qc6 15. b3 Nd7 16. Nc3 Qc5 17. 0-0-0 a5 18. Kb1 Nb6 19. a4 f5 20. Ka2 Nd7 21. exf5 Bxf5 22. Bd3 Be6 23. Ne4 Qb4 24. Ng5 Bf5 25. Qc2 Qc5 26. Ne4 Bxe4 27. Bxe4 Nf6 28. Bxb7 Rab8 29. Bd5+ Kh8 30. Rhe1 Rb4 31. Re7 Rfb8 32. Rd3 c6 33. Rc7 Nxd5 34. Rxd5 Qb6 35. Rh5 h6 36. Rxh6+ Kg8 37. Qh7+ 1-0

[Event "Bled Planinc Memorial 1st"]
[Site "Bled"]
[Date "2018.11.24"]
[Round "1"]
[White "Acosta, Mariano"]
[Black "Ule, Evald"]
[Result "0-1"]
[ECO "D00"]
[WhiteElo "1721"]
[BlackElo "2248"]
[PlyCount "68"]
[EventDate "2018.11.24"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "SLO"]
[SourceTitle "CBM 187 Extra"]
[Source "ChessBase"]
[SourceDate "2018.11.04"]
[SourceVersion "1"]
[SourceVersionDate "2018.11.04"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 d5 3. c3 c6 4. Bg5 Bf5 5. Nbd2 Nbd7 6. e3 h6 7. Bh4 e6 8. h3 Qb6 9. Qb3 Bd6 10. g4 Bh7 11. Rg1 g5 12. Bg3 Bxg3 13. Rxg3 0-0-0 14. Qxb6 axb6 15. a4 Kc7 16. Rg1 Ra8 17. Be2 Ra7 18. Kf1 Rha8 19. b3 b5 20. Kg2 bxa4 21. Ra3 axb3 22. Rxb3 b5 23. Ne5 Nxe5 24. dxe5 Nd7 25. Nf1 Ra2 26. Ng3 Nxe5 27. Rc1 Rd2 28. Kf1 Raa2 29. f4 Nd3 30. Rd1 Rxd1+ 31. Bxd1 gxf4 32. Nh5 fxe3 33. Nf6 Rf2+ 34. Kg1 Rxf6 0-1

[Event "Wch Seniors 65 28th"]
[Site "Bled"]
[Date "2018.11.23"]
[Round "6"]
[White "Henrichsen, Erland"]
[Black "Acosta, Mariano"]
[Result "1-0"]
[ECO "B07"]
[WhiteElo "1962"]
[BlackElo "1721"]
[PlyCount "75"]
[EventDate "2018.11.18"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "SLO"]
[SourceTitle "CBM 187 Extra"]
[Source "ChessBase"]
[SourceDate "2018.11.04"]
[SourceVersion "1"]
[SourceVersionDate "2018.11.04"]
[SourceQuality "1"]

1. e4 d6 2. Nc3 Nf6 3. Bc4 c6 4. d3 b5 5. Bb3 a5 6. a3 e5 7. f4 Bg4 8. Nf3 Nbd7 9. f5 b4 10. axb4 axb4 11. Rxa8 Qxa8 12. Ne2 Bxf3 13. gxf3 Be7 14. Qd2 c5 15. h4 Nh5 16. Qe3 g6 17. Bd5 Qd8 18. Qf2 Nhf6 19. Bb3 Nb6 20. Bg5 gxf5 21. exf5 h6 22. Bxf6 Bxf6 23. Ng3 Bxh4 24. Qh2 Bxg3+ 25. Qxg3 Qf6 26. Qg4 d5 27. Ke2 Kf8 28. Ra1 Rg8 29. Qh3 Qg5 30. Ra6 e4 31. Rxb6 exd3+ 32. cxd3 Qe7+ 33. Kd2 Qe5 34. Qxh6+ Ke7 35. Rb7+ Kd8 36. Qb6+ Ke8 37. Rb8+ Ke7 38. f6+ 1-0

[Event "Wch Seniors 65 28th"]
[Site "Bled"]
[Date "2018.11.22"]
[Round "5"]
[White "Acosta, Mariano"]
[Black "Kolbak, Jens"]
[Result "0-1"]
[ECO "A13"]
[WhiteElo "1721"]
[BlackElo "2173"]
[PlyCount "74"]
[EventDate "2018.11.18"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "SLO"]
[SourceTitle "CBM 187 Extra"]
[Source "ChessBase"]
[SourceDate "2018.11.04"]
[SourceVersion "1"]
[SourceVersionDate "2018.11.04"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 c6 3. g3 d5 4. b3 e6 5. Bg2 Bd6 6. 0-0 0-0 7. Ba3 Re8 8. Bxd6 Qxd6 9. cxd5 exd5 10. Nc3 Nbd7 11. d4 Ne4 12. Rc1 Qa3 13. Nxe4 dxe4 14. Ng5 Nf6 15. Qc2 Qe7 16. e3 h6 17. Nh3 Nd5 18. Nf4 Nxf4 19. exf4 f5 20. f3 exf3 21. Bxf3 Qe3+ 22. Qf2 Qxf2+ 23. Kxf2 Be6 24. Rfe1 Rad8 25. Re5 Rxd4 26. Rce1 Rd2+ 27. Kg1 Rd6 28. Rxf5 Bxf5 29. Rxe8+ Kf7 30. Re2 Kf6 31. Kf2 a5 32. g4 Be6 33. h4 g6 34. Rc2 Rd4 35. g5+ hxg5 36. hxg5+ Kg7 37. Be4 Rxe4 0-1

[Event "Wch Seniors 65 28th"]
[Site "Bled"]
[Date "2018.11.21"]
[Round "4"]
[White "Andreas, Guenter"]
[Black "Acosta, Mariano"]
[Result "0-1"]
[ECO "B07"]
[WhiteElo "1967"]
[BlackElo "1721"]
[PlyCount "144"]
[EventDate "2018.11.18"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "SLO"]
[SourceTitle "CBM 187 Extra"]
[Source "ChessBase"]
[SourceDate "2018.11.04"]
[SourceVersion "1"]
[SourceVersionDate "2018.11.04"]
[SourceQuality "1"]

1. e4 d6 2. f4 Nf6 3. Nc3 c6 4. d4 Qa5 5. Bd2 e5 6. fxe5 dxe5 7. dxe5 Ng4 8. Be2 Nxe5 9. Nf3 Nbd7 10. Nxe5 Nxe5 11. 0-0 Bc5+ 12. Kh1 Qd8 13. Qe1 Be6 14. Rd1 Qe7 15. Qg3 f6 16. Bf4 Ng6 17. Bh5 Bf7 18. e5 0-0 19. exf6 Qxf6 20. Bc7 Qe6 21. Bg4 Qe3 22. Rf3 Qe7 23. Rf5 Bb4 24. Rf3 Qh4 25. Qxh4 Nxh4 26. Rh3 Bxc3 27. bxc3 Ng6 28. a4 Rfe8 29. Bf5 Re7 30. Bd6 Rd8 31. Rhd3 Re2 32. Bc7 Rf8 33. Rd8 Bd5 34. Rxf8+ Nxf8 35. Rg1 Re7 36. Bd6 Rf7 37. Bd3 b6 38. c4 Be6 39. Re1 Bf5 40. h3 Bxd3 41. cxd3 Rd7 42. c5 Ng6 43. d4 Kf7 44. g3 Ne7 45. Rf1+ Kg6 46. g4 Nd5 47. h4 h5 48. g5 Ne3 49. Re1 Nf5 50. Be5 bxc5 51. dxc5 Nxh4 52. Bf4 Kf7 53. Re5 g6 54. Re1 Nf5 55. Bb8 Rb7 56. Be5 Rb4 57. Bf6 Rxa4 58. Rb1 Ke6 59. Rb8 Ra2 60. Rg8 Nh4 61. Kg1 Kf5 62. Rc8 Nf3+ 63. Kf1 Ra6 64. Be7 Nxg5 65. Rf8+ Kg4 66. Rg8 Ne4 67. Rxg6+ Kf3 68. Kg1 Ra1+ 69. Kh2 Ra2+ 70. Kg1 Ng3 71. Rf6+ Kg4 72. Rg6+ Kh3 0-1

[Event "Wch Seniors 65 28th"]
[Site "Bled"]
[Date "2018.11.20"]
[Round "3"]
[White "Acosta, Mariano"]
[Black "Davydov, Mihail"]
[Result "1/2-1/2"]
[ECO "E17"]
[WhiteElo "1721"]
[BlackElo "1959"]
[PlyCount "34"]
[EventDate "2018.11.18"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "SLO"]
[SourceTitle "CBM 187 Extra"]
[Source "ChessBase"]
[SourceDate "2018.11.04"]
[SourceVersion "1"]
[SourceVersionDate "2018.11.04"]
[SourceQuality "1"]

1. Nf3 d5 2. g3 Nf6 3. Bg2 e6 4. c4 b6 5. b3 Bb7 6. Bb2 Be7 7. 0-0 Nbd7 8. cxd5 exd5 9. d4 0-0 10. Nbd2 Re8 11. Ne5 Bd6 12. Ndf3 Ne4 13. Rc1 f6 14. Nc6 Bxc6 15. Rxc6 Nf8 16. Qc2 Qd7 17. e3 g6 1/2-1/2

[Event "Wch Seniors 65 28th"]
[Site "Bled"]
[Date "2018.11.19"]
[Round "2"]
[White "Siegmund, Rainer"]
[Black "Acosta, Mariano"]
[Result "1-0"]
[ECO "A68"]
[WhiteElo "2102"]
[BlackElo "1721"]
[PlyCount "63"]
[EventDate "2018.11.18"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "SLO"]
[SourceTitle "CBM 187 Extra"]
[Source "ChessBase"]
[SourceDate "2018.11.04"]
[SourceVersion "1"]
[SourceVersionDate "2018.11.04"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f4 0-0 6. Nf3 c5 7. d5 e6 8. Be2 Na6 9. 0-0 exd5 10. cxd5 Nc7 11. a4 b6 12. Re1 a6 13. e5 dxe5 14. d6 Ne6 15. fxe5 Ng4 16. Bc4 Bb7 17. Bd5 Rb8 18. Bxb7 Rxb7 19. h3 Nh6 20. Qd5 Rd7 21. Ne4 Nf5 22. Bg5 Qa8 23. Qxa8 Rxa8 24. Nf6+ Bxf6 25. Bxf6 h6 26. Rad1 Kh7 27. Kf2 g5 28. g4 Nfd4 29. Rd2 Nc6 30. Kg3 Kg6 31. h4 gxh4+ 32. Bxh4 1-0

[Event "Wch Seniors 65 28th"]
[Site "Bled"]
[Date "2018.11.18"]
[Round "1"]
[White "Acosta, Mariano"]
[Black "Norman, Kenneth I"]
[Result "1/2-1/2"]
[ECO "A05"]
[WhiteElo "1721"]
[BlackElo "2099"]
[PlyCount "81"]
[EventDate "2018.11.18"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "SLO"]
[SourceTitle "CBM 187 Extra"]
[Source "ChessBase"]
[SourceDate "2018.11.04"]
[SourceVersion "1"]
[SourceVersionDate "2018.11.04"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 g6 3. b3 Bg7 4. Bb2 0-0 5. g3 c5 6. Bg2 Nc6 7. 0-0 d5 8. Ne5 Nxe5 9. Bxe5 Be6 10. d3 Rc8 11. Nc3 d4 12. Bxf6 Bxf6 13. Ne4 Qd7 14. Nxf6+ exf6 15. Rb1 Bh3 16. Bxh3 Qxh3 17. e4 f5 18. Qf3 fxe4 19. Qxe4 Qd7 20. Rfe1 b6 21. f4 Rfe8 22. Qf3 Rc6 23. Re4 Rxe4 24. dxe4 Re6 25. e5 Qe7 26. Re1 h5 27. Kf2 Kg7 28. h3 f6 29. Qd5 fxe5 30. fxe5 Qf7+ 31. Kg2 Qf5 32. Qd7+ Kh6 33. Qd8 Qc2+ 34. Kh1 Qf5 35. Kg2 Qc2+ 36. Kg1 Qc3 37. Qf8+ Kh7 38. Qf7+ Kh6 39. Qf8+ Kh7 40. Qf7+ Kh6 41. Qf8+ 1/2-1/2

[Event "Brno op 8th"]
[Site "Brno"]
[Date "2018.11.13"]
[Round "5"]
[White "Acosta, Mariano"]
[Black "Barak, David"]
[Result "1/2-1/2"]
[ECO "B10"]
[WhiteElo "1721"]
[BlackElo "1975"]
[PlyCount "67"]
[EventDate "2018.11.10"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "CBM 187 Extra"]
[Source "ChessBase"]
[SourceDate "2018.11.04"]
[SourceVersion "1"]
[SourceVersionDate "2018.11.04"]
[SourceQuality "1"]

1. e4 c6 2. b3 d5 3. Bb2 dxe4 4. Nc3 Nf6 5. Nge2 Bf5 6. Ng3 e6 7. Qe2 Bb4 8. 0-0-0 Qe7 9. Ncxe4 Nxe4 10. Nxe4 Ba3 11. Ng3 Bg6 12. f4 a5 13. Qe5 f6 14. Bxa3 Qxa3+ 15. Qb2 Qxb2+ 16. Kxb2 Kd7 17. Bc4 Na6 18. Bxe6+ Kxe6 19. f5+ Kf7 20. d4 Rad8 21. c4 Rhe8 22. fxg6+ hxg6 23. Rd2 Nc5 24. Rhd1 Ne4 25. Nxe4 Rxe4 26. a4 Ke6 27. Kc3 f5 28. b4 axb4+ 29. Kxb4 b6 30. a5 bxa5+ 31. Kc5 Re3 32. Ra1 Rc3 33. Ra4 g5 34. Kb6 1/2-1/2

[Event "Brno op 8th"]
[Site "Brno"]
[Date "2018.11.10"]
[Round "1"]
[White "Kredl, Karel"]
[Black "Acosta, Mariano"]
[Result "1-0"]
[ECO "A48"]
[WhiteElo "2124"]
[BlackElo "1721"]
[PlyCount "107"]
[EventDate "2018.11.10"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "CBM 187 Extra"]
[Source "ChessBase"]
[SourceDate "2018.11.04"]
[SourceVersion "1"]
[SourceVersionDate "2018.11.04"]
[SourceQuality "1"]

1. Nf3 Nf6 2. d4 g6 3. Bg5 Bg7 4. Nbd2 h6 5. Bh4 d6 6. e4 g5 7. Bg3 Nh5 8. c3 Nd7 9. Bd3 c5 10. d5 a6 11. a4 b6 12. 0-0 Nf4 13. Nc4 Ne5 14. Bxf4 gxf4 15. Nfxe5 dxe5 16. Qh5 Qc7 17. Rfd1 Bb7 18. d6 Qc6 19. Nxe5 Bxe5 20. Qxe5 0-0-0 21. dxe7 Rde8 22. Be2 Rhg8 23. Qxf4 Qxe4 24. Rd8+ Rxd8 25. exd8Q+ Kxd8 26. Rd1+ Kc8 27. Qxe4 Bxe4 28. f3 Bb7 29. Kf2 Kc7 30. Bc4 Rg7 31. Re1 Kd6 32. Re8 Bc6 33. Rh8 b5 34. Rxh6+ Kc7 35. axb5 axb5 36. Bd3 Bd7 37. Rf6 c4 38. Be4 Be6 39. Bf5 Bd5 40. h4 Rg8 41. h5 Rb8 42. h6 b4 43. h7 bxc3 44. bxc3 Rh8 45. Ke3 Rd8 46. Kf4 Rf8 47. Kg5 Kd8 48. Rd6+ Ke7 49. Rd7+ Ke8 50. Rxd5 Ke7 51. Rd7+ Ke8 52. Kf6 Rh8 53. Re7+ Kd8 54. Ra7 1-0

[Event "Quebec op"]
[Site "Quebec"]
[Date "2018.07.28"]
[Round "9"]
[White "Acosta, Mariano"]
[Black "Lemieux, Serge"]
[Result "1-0"]
[ECO "A12"]
[WhiteElo "1802"]
[BlackElo "1702"]
[PlyCount "41"]
[EventDate "2018.07.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CAN"]
[SourceTitle "CBM 186 Extra"]
[Source "ChessBase"]
[SourceDate "2018.08.24"]
[SourceVersion "1"]
[SourceVersionDate "2018.08.24"]
[SourceQuality "1"]

1. Nf3 d5 2. c4 c6 3. b3 Bg4 4. Ne5 Bf5 5. Bb2 f6 6. Nf3 e5 7. g3 Bc5 8. cxd5 cxd5 9. Bg2 Ne7 10. 0-0 Nbc6 11. d4 Bd6 12. dxe5 Nxe5 13. Nd4 Bd7 14. Nc3 N5c6 15. Nxd5 Nxd4 16. Nxe7 Qxe7 17. Bxd4 Be5 18. Bxe5 Qxe5 19. Bxb7 Rd8 20. Qd5 Qxd5 21. Bxd5 1-0

[Event "Quebec op"]
[Site "Quebec"]
[Date "2018.07.27"]
[Round "8"]
[White "Libersan, Thierry"]
[Black "Acosta, Mariano"]
[Result "1-0"]
[ECO "B07"]
[WhiteElo "2047"]
[BlackElo "1802"]
[PlyCount "149"]
[EventDate "2018.07.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CAN"]
[SourceTitle "CBM 186 Extra"]
[Source "ChessBase"]
[SourceDate "2018.08.24"]
[SourceVersion "1"]
[SourceVersionDate "2018.08.24"]
[SourceQuality "1"]

1. d4 d6 2. e4 Nf6 3. f3 c5 4. Ne2 e6 5. Nbc3 d5 6. Bg5 cxd4 7. Nxd4 Bb4 8. e5 h6 9. Be3 Nfd7 10. f4 Nc6 11. Bd3 Nxd4 12. Bxd4 Nc5 13. 0-0 Nxd3 14. cxd3 Bd7 15. Qb3 Qa5 16. Kh1 g6 17. a3 Bxc3 18. Bxc3 Qb6 19. Qxb6 axb6 20. Bb4 h5 21. Rac1 Bc6 22. d4 Kd7 23. h3 Bb5 24. Rf3 Rac8 25. Bc3 Bc4 26. g3 Bb3 27. Rf2 Rc4 28. Re1 Rcc8 29. Kg2 Rh7 30. Kf3 Ba4 31. Ke3 Ke8 32. Rc1 Kd7 33. Kd2 Rhh8 34. Rg1 Ke8 35. Rh1 Kd7 36. Rhh2 Bb3 37. Rhg2 Ba4 38. g4 Rcg8 39. Rg1 hxg4 40. hxg4 Rh3 41. Rgg2 Rh7 42. Rh2 Rgh8 43. Rxh7 Rxh7 44. f5 gxf5 45. gxf5 exf5 46. Rxf5 Ke8 47. Rf6 Bc6 48. Ke3 Rg7 49. Rh6 b5 50. Be1 Rg4 51. Bh4 Re4+ 52. Kd3 b4 53. axb4 Bb5+ 54. Kc3 Re3+ 55. Kc2 Re4 56. Kc3 Re3+ 57. Kc2 Re4 58. Rh8+ Kd7 59. Bf6 Bc6 60. Rd8+ Ke6 61. Rd6+ Kf5 62. b5 Bxb5 63. Rxd5 Bc6 64. Rd8 Re2+ 65. Kc3 Ke4 66. b3 Bd5 67. Kb4 Re3 68. Kc5 Rc3+ 69. Kd6 Rc6+ 70. Ke7 Bxb3 71. Rd7 b5 72. Rb7 Bc4 73. Rb8 Rc7+ 74. Kd6 Rc6+ 75. Kxc6 1-0

[Event "Quebec op"]
[Site "Quebec"]
[Date "2018.07.26"]
[Round "7"]
[White "Acosta, Mariano"]
[Black "Zhong, Kevin"]
[Result "1/2-1/2"]
[ECO "A09"]
[WhiteElo "1802"]
[BlackElo "1925"]
[PlyCount "128"]
[EventDate "2018.07.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CAN"]
[SourceTitle "CBM 186 Extra"]
[Source "ChessBase"]
[SourceDate "2018.08.24"]
[SourceVersion "1"]
[SourceVersionDate "2018.08.24"]
[SourceQuality "1"]

1. Nf3 d5 2. c4 d4 3. b4 g6 4. Bb2 Bg7 5. e3 e5 6. exd4 exd4 7. Bd3 Ne7 8. 0-0 a5 9. Qa4+ Bd7 10. b5 c5 11. Be4 Qc7 12. Re1 Ra7 13. Qb3 b6 14. d3 0-0 15. Nfd2 Be6 16. Nf1 Qd6 17. Nbd2 Nd7 18. g3 h5 19. Bh1 f5 20. f4 Bf6 21. Nf3 Kg7 22. Re2 Rh8 23. Rae1 Nf8 24. h4 Bf7 25. Bc1 Ne6 26. N1h2 Re8 27. Ng5 Bxg5 28. hxg5 h4 29. Nf3 hxg3 30. Ne5 Nd8 31. Rg2 Ng8 32. Rf1 Be6 33. Rxg3 Nf7 34. Qd1 Nxe5 35. fxe5 Qe7 36. Bf4 Kf8 37. Bc6 Rc8 38. Bd5 Rd8 39. Qf3 Qd7 40. Bc6 Qg7 41. Qh1 Rc8 42. Rh3 Rcc7 43. Rf2 Qe7 44. Bd5 Qe8 45. Rfh2 Rg7 46. Rh8 Qe7 47. a4 Qd7 48. Bc6 Qe7 49. Qg2 Rc7 50. Bd5 Ra7 51. Qf3 Qd7 52. Bc6 Qe7 53. Bd5 Qd7 54. Qh1 Qe7 55. Re2 Qd7 56. Bxe6 Qxe6 57. Qc6 Rae7 58. Qd5 Re8 59. Reh2 Rd7 60. Qh1 Rg7 61. R8h7 Ree7 62. Rh8 Re8 63. R2h7 Ree7 64. Qh6 Rd7 1/2-1/2

[Event "Quebec op"]
[Site "Quebec"]
[Date "2018.07.25"]
[Round "6"]
[White "Chang, Alexander Rz"]
[Black "Acosta, Mariano"]
[Result "1/2-1/2"]
[ECO "B38"]
[WhiteElo "1597"]
[BlackElo "1802"]
[PlyCount "96"]
[EventDate "2018.07.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CAN"]
[SourceTitle "CBM 186 Extra"]
[Source "ChessBase"]
[SourceDate "2018.08.24"]
[SourceVersion "1"]
[SourceVersionDate "2018.08.24"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 g6 3. d4 cxd4 4. Nxd4 Bg7 5. c4 Nc6 6. Be3 Nf6 7. Nc3 0-0 8. Be2 d6 9. 0-0 Ne5 10. f3 Bd7 11. Qd2 Rc8 12. b3 a6 13. Rac1 Nc6 14. Nd5 Re8 15. Nxc6 Bxc6 16. Nxf6+ Bxf6 17. Rfd1 b6 18. Bd4 e5 19. Be3 Be7 20. Qc2 Qc7 21. b4 Bb7 22. Qb3 Kg7 23. Bd3 Rf8 24. Rc2 f5 25. a4 f4 26. Bf2 Rb8 27. Qa2 Bc8 28. a5 bxa5 29. bxa5 Be6 30. Bb6 Rxb6 31. axb6 Qxb6+ 32. Kh1 Rc8 33. Rb1 Qe3 34. Bf1 Qa7 35. Ra1 Rc6 36. Qb2 Bc8 37. Rc3 Bd8 38. Rb3 Bb6 39. Rb1 Bd4 40. Qa2 Rb6 41. Rxb6 Bxb6 42. Qd2 Bd4 43. Qa5 Qd7 44. Bd3 Qe7 45. Bc2 h5 46. Rb8 Be6 47. Qd8 Qxd8 48. Rxd8 Bc5 1/2-1/2

[Event "Quebec op"]
[Site "Quebec"]
[Date "2018.07.24"]
[Round "5"]
[White "Acosta, Mariano"]
[Black "Yagiz, Bora"]
[Result "1-0"]
[ECO "A48"]
[WhiteElo "1802"]
[BlackElo "1862"]
[PlyCount "61"]
[EventDate "2018.07.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CAN"]
[SourceTitle "CBM 186 Extra"]
[Source "ChessBase"]
[SourceDate "2018.08.24"]
[SourceVersion "1"]
[SourceVersionDate "2018.08.24"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. c3 Bg7 4. Bg5 h6 5. Bh4 d6 6. Nbd2 Bf5 7. Qb3 Qc8 8. h3 Nbd7 9. g4 Be6 10. Qc2 d5 11. Bg3 c5 12. e3 c4 13. Ne5 Nxe5 14. Bxe5 0-0 15. f4 Bxg4 16. hxg4 Nxg4 17. Ke2 f5 18. Nf3 Bf6 19. Bh3 h5 20. Bxg4 hxg4 21. Ng5 Bxg5 22. fxg5 Kf7 23. Rh7+ Ke6 24. Rah1 Qc6 25. R1h6 Rg8 26. Kd1 b5 27. Qh2 b4 28. Bf6 exf6 29. gxf6 g3 30. Qxg3 Kxf6 31. Qh4+ 1-0

[Event "Quebec op"]
[Site "Quebec"]
[Date "2018.07.23"]
[Round "4"]
[White "Currie, James"]
[Black "Acosta, Mariano"]
[Result "1-0"]
[ECO "C00"]
[WhiteElo "2006"]
[BlackElo "1802"]
[PlyCount "81"]
[EventDate "2018.07.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CAN"]
[SourceTitle "CBM 186 Extra"]
[Source "ChessBase"]
[SourceDate "2018.08.24"]
[SourceVersion "1"]
[SourceVersionDate "2018.08.24"]
[SourceQuality "1"]

1. e4 e6 2. d3 d5 3. Nd2 Nf6 4. e5 Nfd7 5. Ngf3 c5 6. c4 d4 7. Ne4 Nc6 8. Bf4 h6 9. g4 g5 10. Bg3 Qa5+ 11. Ned2 Bg7 12. Qe2 Nb4 13. Nb3 Qa4 14. Bg2 Qc6 15. 0-0 Qc7 16. a3 Nc6 17. Rfe1 0-0 18. Nbd2 a5 19. Ne4 Kh8 20. Nd6 Qd8 21. h4 Qe7 22. hxg5 hxg5 23. Nxg5 Qxg5 24. f4 Qe7 25. Be4 Bh6 26. Qh2 Kg7 27. Bh4 Bxf4 28. Bf6+ Nxf6 29. exf6+ Kxf6 30. Qxf4+ Kg7 31. Bxc6 Qh4 32. Bg2 Ra6 33. Re5 f5 34. Rxc5 Bd7 35. Qxd4+ Qf6 36. Qxf6+ Rxf6 37. Nxb7 fxg4 38. Rxa5 Rb6 39. b4 Bc6 40. Nd6 Bxg2 41. Ne8+ 1-0

[Event "Quebec op"]
[Site "Quebec"]
[Date "2018.07.22"]
[Round "3"]
[White "Acosta, Mariano"]
[Black "Jacquet, Stephane"]
[Result "1/2-1/2"]
[ECO "A16"]
[WhiteElo "1802"]
[BlackElo "1936"]
[PlyCount "101"]
[EventDate "2018.07.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CAN"]
[SourceTitle "CBM 186 Extra"]
[Source "ChessBase"]
[SourceDate "2018.08.24"]
[SourceVersion "1"]
[SourceVersionDate "2018.08.24"]
[SourceQuality "1"]

1. Nf3 g6 2. c4 Bg7 3. g3 Nf6 4. Bg2 0-0 5. 0-0 d5 6. cxd5 Nxd5 7. Nc3 c6 8. e4 Nb6 9. h3 N8d7 10. d4 Nf6 11. b3 a5 12. Re1 Nh5 13. Bb2 Qc7 14. Qc2 Be6 15. Rad1 Rad8 16. Ne2 h6 17. Bc3 a4 18. Ba5 Ra8 19. b4 Nf6 20. Nc3 Nfd7 21. Nxa4 Rxa5 22. bxa5 Nxa4 23. Qxa4 Ra8 24. Qb4 Rxa5 25. Rb1 b5 26. a3 Ra4 27. Qc3 Rc4 28. Qe3 Qa5 29. Rbc1 Nb6 30. Bf1 Ra4 31. Rc3 Bc4 32. Ne5 Bxe5 33. dxe5 Bxf1 34. Rxf1 Nc4 35. Rxc4 Rxc4 36. e6 Qc3 37. exf7+ Kxf7 38. Qxh6 Rxe4 39. Qh7+ Qg7 40. Qxg7+ Kxg7 41. Rc1 Re6 42. Kg2 Kf6 43. f4 Rd6 44. g4 e6 45. Rc3 e5 46. Kf3 exf4 47. Kxf4 g5+ 48. Ke4 Ke6 49. Rc5 Kf6 50. Rf5+ Kg6 51. Rc5 1/2-1/2

[Event "Quebec op"]
[Site "Quebec"]
[Date "2018.07.22"]
[Round "2"]
[White "Boulay, David"]
[Black "Acosta, Mariano"]
[Result "1-0"]
[ECO "A55"]
[WhiteElo "1971"]
[BlackElo "1802"]
[PlyCount "95"]
[EventDate "2018.07.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CAN"]
[SourceTitle "CBM 186 Extra"]
[Source "ChessBase"]
[SourceDate "2018.08.24"]
[SourceVersion "1"]
[SourceVersionDate "2018.08.24"]
[SourceQuality "1"]

1. d4 d6 2. Nf3 Nf6 3. g3 Nbd7 4. Bg2 e5 5. 0-0 Be7 6. c4 0-0 7. Nc3 c6 8. e4 Re8 9. Re1 Bf8 10. h3 g6 11. b3 Qc7 12. Bb2 Bg7 13. Rc1 a5 14. Na4 b6 15. Rc2 exd4 16. Nxd4 Nc5 17. Nc3 Bb7 18. Rce2 Ne6 19. Na4 Rad8 20. Qa1 Nh5 21. Nxe6 Rxe6 22. Bxg7 Nxg7 23. Qd4 b5 24. cxb5 cxb5 25. Nc3 b4 26. Nd5 Bxd5 27. Qxd5 Re5 28. Qd3 Ne6 29. f4 Rc5 30. Kh2 Rc3 31. Qd5 Rc5 32. Qd2 f6 33. Rd1 Kf7 34. h4 Ke7 35. f5 Nf8 36. Qh6 Ke8 37. Rf1 Qe7 38. Ref2 gxf5 39. Rxf5 Rxf5 40. Rxf5 a4 41. Rxf6 axb3 42. axb3 Ng6 43. Rf5 Ne5 44. Rg5 Ng6 45. h5 Nf8 46. e5 Rc8 47. exd6 Qe2 48. Qf6 1-0

[Event "Quebec op"]
[Site "Quebec"]
[Date "2018.07.21"]
[Round "1"]
[White "Acosta, Mariano"]
[Black "Soudre, Nicolas"]
[Result "0-1"]
[ECO "D03"]
[WhiteElo "1802"]
[BlackElo "2080"]
[PlyCount "92"]
[EventDate "2018.07.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CAN"]
[SourceTitle "CBM 186 Extra"]
[Source "ChessBase"]
[SourceDate "2018.08.24"]
[SourceVersion "1"]
[SourceVersionDate "2018.08.24"]
[SourceQuality "1"]

1. d4 e6 2. Nf3 Nf6 3. Bg5 Be7 4. Nbd2 d5 5. e3 c5 6. c3 b6 7. Bd3 Bb7 8. Ne5 0-0 9. f4 Ne4 10. Bxe7 Qxe7 11. Bxe4 dxe4 12. 0-0 f6 13. Ng4 Nd7 14. Nf2 f5 15. g4 Nf6 16. g5 Nd5 17. Qe2 a5 18. Rfc1 Ba6 19. Qe1 Rfd8 20. a3 a4 21. b4 axb3 22. Nxb3 c4 23. Nd2 Rdc8 24. Ra2 Bb5 25. Nb1 Ba4 26. Rb2 Bb3 27. Nh1 e5 28. fxe5 Qxg5+ 29. Rg2 Qxe3+ 30. Qxe3 Nxe3 31. Re2 Nd5 32. Ng3 Nf4 33. Re3 g6 34. Rf1 Nd5 35. Re2 Ra7 36. h4 b5 37. h5 b4 38. cxb4 c3 39. Rc1 c2 40. Nd2 Rxa3 41. hxg6 hxg6 42. Kg2 Kf7 43. Ngxe4 fxe4 44. Nxe4 Rca8 45. Rf1+ Kg7 46. e6 Ra1 0-1

[Event "Canadian op"]
[Site "Quebec"]
[Date "2018.07.14"]
[Round "9"]
[White "Acosta, Mariano"]
[Black "Doknjas, Joshua"]
[Result "1/2-1/2"]
[ECO "A30"]
[WhiteElo "1802"]
[BlackElo "2216"]
[PlyCount "104"]
[EventDate "2018.07.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CAN"]
[SourceTitle "CBM 185 Extra"]
[Source "ChessBase"]
[SourceDate "2018.07.29"]
[SourceVersion "1"]
[SourceVersionDate "2018.07.29"]
[SourceQuality "1"]

1. Nf3 c5 2. c4 Nc6 3. b3 e5 4. Bb2 d6 5. g3 g6 6. Bg2 Bg7 7. 0-0 Nge7 8. Nc3 0-0 9. d3 Rb8 10. Ne1 Be6 11. Nd5 a6 12. Nc2 Nc8 13. e3 b5 14. f4 f5 15. cxb5 axb5 16. b4 Qd7 17. e4 Nb6 18. Nxb6 Rxb6 19. Qe1 Ra6 20. a3 Re8 21. exf5 Bxf5 22. Qd2 exf4 23. Bd5+ Kh8 24. Bxg7+ Qxg7 25. Rae1 Rxe1 26. Rxe1 Ne7 27. bxc5 fxg3 28. hxg3 dxc5 29. Qf4 Rf6 30. Qe5 Bxd3 31. Ne3 Nxd5 32. Qxd5 c4 33. Qxb5 Rf8 34. Qd5 Re8 35. Ng2 Rxe1+ 36. Nxe1 h5 37. Nxd3 cxd3 38. Qd6 Qa1+ 39. Kg2 Qb2+ 40. Kh3 d2 41. Qf8+ Kh7 42. Qf7+ Qg7 43. Qd5 Qh6 44. Qd7+ Kg8 45. Qd8+ Qf8 46. Qxd2 Qxa3 47. Qd5+ Kh7 48. Qf7+ Kh6 49. Qf4+ Kg7 50. Qe5+ Kf7 51. Qd5+ Kf6 52. Qd4+ Kf7 1/2-1/2

[Event "Canadian op"]
[Site "Quebec"]
[Date "2018.07.13"]
[Round "8"]
[White "Zhu, Brandon"]
[Black "Acosta, Mariano"]
[Result "0-1"]
[ECO "A48"]
[WhiteElo "1959"]
[BlackElo "1802"]
[PlyCount "180"]
[EventDate "2018.07.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CAN"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. d4 d6 2. Nf3 Nf6 3. e3 g6 4. b3 Bg7 5. Bb2 0-0 6. Be2 c5 7. 0-0 cxd4 8. Nxd4 Nc6 9. Bf3 Bd7 10. c4 Re8 11. Nc2 Qc8 12. Nc3 Ne5 13. Be2 h5 14. Rc1 b6 15. Nd4 Bg4 16. Bxg4 hxg4 17. Nd5 Qd7 18. Qe2 Rac8 19. Nb5 Ne4 20. f3 gxf3 21. gxf3 Nc5 22. Rcd1 f5 23. Kh1 Kf7 24. Nxe7 Qxe7 25. Nxd6+ Kg8 26. Nxc8 Rxc8 27. Rd5 Kf7 28. Rfd1 a5 29. a3 Rc7 30. e4 f4 31. Qg2 Ncd7 32. Qh3 Nf8 33. Bd4 Ned7 34. Bxg7 Kxg7 35. Rd6 a4 36. b4 Ne5 37. Rxb6 Nxc4 38. Ra6 Nxa3 39. Rxa4 Nc4 40. Rb1 Ne3 41. Ra8 Qxb4 42. Rg1 Qe7 43. Qh5 Qf6 44. Qa5 Rc2 45. Qa1 Qxa1 46. Rgxa1 Ne6 47. R8a2 Rxa2 48. Rxa2 Nd4 49. Rf2 Kh6 50. h3 Kg5 51. Kh2 Kh4 52. e5 Kg5 53. Kh1 Kf5 54. h4 Ne6 55. Rh2 Ng7 56. Ra2 Kxe5 57. Ra5+ Kf6 58. Kg1 Nef5 59. Kf2 Nxh4 60. Ke2 Ne6 61. Rd5 g5 62. Kf2 Nf5 63. Ra5 Kg6 64. Ra6 Nfd4 65. Rd6 Kf6 66. Rd5 Nc6 67. Rc5 Ne5 68. Rd5 Kf5 69. Ke2 Nf8 70. Rd8 Nfg6 71. Rg8 Nh4 72. Rf8+ Ke6 73. Re8+ Kf6 74. Rf8+ Ke7 75. Ra8 Nhxf3 76. Ra6 Nd4+ 77. Kf2 Ne6 78. Kg2 Kf6 79. Kh3 Kf5 80. Ra5 g4+ 81. Kg2 Ng5 82. Kf2 Ne4+ 83. Kg2 f3+ 84. Kh2 Kf4 85. Ra8 g3+ 86. Kg1 Ng5 87. Ra2 Ke3 88. Kf1 Nd3 89. Rh2 Ne4 90. Rh3 Nd2+ 0-1

[Event "Canadian op"]
[Site "Quebec"]
[Date "2018.07.12"]
[Round "7"]
[White "Acosta, Mariano"]
[Black "Dukic, Zachary"]
[Result "0-1"]
[ECO "E60"]
[WhiteElo "1802"]
[BlackElo "2118"]
[PlyCount "64"]
[EventDate "2018.07.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CAN"]
[SourceTitle "CBM 185 Extra"]
[Source "ChessBase"]
[SourceDate "2018.07.29"]
[SourceVersion "1"]
[SourceVersionDate "2018.07.29"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 g6 3. b3 Bg7 4. Bb2 0-0 5. g3 d6 6. d4 Nc6 7. Bg2 a6 8. 0-0 Rb8 9. Nbd2 b5 10. d5 Na5 11. cxb5 axb5 12. e4 c5 13. dxc6 Nxc6 14. Re1 Qb6 15. Qe2 Re8 16. h3 e5 17. Rac1 Bd7 18. a3 Rbd8 19. Rc2 d5 20. exd5 Nxd5 21. Ne4 Nd4 22. Bxd4 exd4 23. Qd2 Bf5 24. Nh4 Ne3 25. Nxf5 Nxc2 26. Nxg7 Kxg7 27. Rc1 d3 28. Qc3+ Qd4 29. Rxc2 dxc2 30. Qxc2 Rc8 31. Qb1 f5 32. Ng5 Re2 0-1

[Event "Canadian op"]
[Site "Quebec"]
[Date "2018.07.11"]
[Round "6"]
[White "Mercure, Gilbert"]
[Black "Acosta, Mariano"]
[Result "0-1"]
[ECO "B09"]
[WhiteElo "1760"]
[BlackElo "1802"]
[PlyCount "87"]
[EventDate "2018.07.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CAN"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. f4 Bg7 5. e5 Nfd7 6. Bd3 0-0 7. Nf3 c5 8. e6 fxe6 9. Ng5 Nf6 10. h4 cxd4 11. Nce4 d5 12. Nxf6+ Rxf6 13. Nxh7 Kxh7 14. Qh5+ Bh6 15. Bxg6+ Rxg6 16. g4 Qf8 17. g5 Qf5 18. Bd2 Qxc2 19. Rc1 Qe4+ 20. Kf2 Nc6 21. Rhe1 Qf5 22. Qf3 Bd7 23. b4 a6 24. a4 Rf8 25. b5 axb5 26. axb5 Nb8 27. gxh6 Rxh6 28. Rc7 Bxb5 29. Rxe7+ Rf7 30. Re5 Qf6 31. Rxf7+ Qxf7 32. Qg4 Nd7 33. Rg5 Nf6 34. Qd1 Ne4+ 35. Kg2 Rxh4 36. Qb1 Bc6 37. Qd3 Rh6 38. Kf1 Qf6 39. Kg2 Kh8 40. Rg4 Rg6 41. Qh3+ Kg7 42. Bb4 Rxg4+ 43. Qxg4+ Qg6 44. Bf8+ 0-1

[Event "Canadian op"]
[Site "Quebec"]
[Date "2018.07.10"]
[Round "5"]
[White "Acosta, Mariano"]
[Black "Garneau, Benoit"]
[Result "1-0"]
[ECO "D03"]
[WhiteElo "1802"]
[PlyCount "41"]
[EventDate "2018.07.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CAN"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. d4 g6 2. c3 d5 3. Bg5 Bg7 4. Nd2 Nf6 5. e3 0-0 6. Bd3 Nbd7 7. Ngf3 Re8 8. 0-0 e5 9. dxe5 Nxe5 10. Nxe5 Rxe5 11. Nf3 Bg4 12. Bf4 Re8 13. h3 Bxf3 14. Qxf3 Ne4 15. Rfd1 Qe7 16. Qe2 Rad8 17. Rac1 c6 18. c4 d4 19. exd4 Bxd4 20. Be3 Nxf2 21. Bxf2 1-0

[Event "Canadian op"]
[Site "Quebec"]
[Date "2018.07.09"]
[Round "4"]
[White "Sauve, Richard"]
[Black "Acosta, Mariano"]
[Result "1/2-1/2"]
[ECO "A41"]
[BlackElo "1802"]
[PlyCount "97"]
[EventDate "2018.07.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CAN"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. d4 g6 2. c4 d6 3. Nc3 e5 4. dxe5 dxe5 5. Qxd8+ Kxd8 6. Bg5+ f6 7. 0-0-0+ Nd7 8. Bh4 c6 9. Nf3 Kc7 10. a3 h5 11. Bg3 Ne7 12. e4 Bh6+ 13. Kb1 g5 14. h3 Bg7 15. Nd2 h4 16. Bh2 Ng6 17. g3 Ndf8 18. g4 Ne6 19. Nb3 a5 20. Na4 Rd8 21. Rxd8 Nxd8 22. f3 b6 23. Bg1 Rb8 24. Rh2 Be6 25. Kc2 Bf8 26. Rd2 Be7 27. Nc1 Nf8 28. Nc3 Nd7 29. N1a2 Bc5 30. Bxc5 bxc5 31. Na4 Bf7 32. Nc1 Ne6 33. Nb3 Nd4+ 34. Nxd4 cxd4 35. Rd1 c5 36. b3 Kc6 37. Rb1 Rb7 38. Rd1 Nb8 39. Nb2 Na6 40. Rb1 Kd6 41. Be2 Be8 42. Nd3 Bf7 43. Nb2 Nb8 44. Bf1 Be8 45. Nd3 Nc6 46. Nb2 Nb8 47. Nd3 Na6 48. Be2 Kc6 49. Nb2 1/2-1/2

[Event "Canadian op"]
[Site "Quebec"]
[Date "2018.07.08"]
[Round "3"]
[White "Acosta, Mariano"]
[Black "Dhaliwal, Jatinder"]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "1802"]
[PlyCount "63"]
[EventDate "2018.07.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CAN"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Bg4 3. Nbd2 Nf6 4. h3 Bh5 5. c4 c6 6. Qb3 Qc7 7. cxd5 Nxd5 8. e4 Nb6 9. g4 Bg6 10. Ne5 N8d7 11. Nxg6 hxg6 12. Bg2 e6 13. 0-0 Be7 14. a4 0-0-0 15. a5 Na8 16. Nf3 Rh7 17. Be3 a6 18. Rfc1 Rdh8 19. d5 exd5 20. exd5 c5 21. d6 Bxd6 22. Ng5 f5 23. Nxh7 f4 24. Bd2 Rxh7 25. Qg8+ Nf8 26. Bxf4 Rh4 27. Bg5 Rh7 28. b4 Kd7 29. bxc5 Bf4 30. Qf7+ Kc8 31. Qxf8+ Kd7 32. Bxf4 1-0

[Event "Canadian op"]
[Site "Quebec"]
[Date "2018.07.08"]
[Round "2"]
[White "Tanaka, Taira Tyler"]
[Black "Acosta, Mariano"]
[Result "1-0"]
[ECO "B08"]
[WhiteElo "2054"]
[BlackElo "1802"]
[PlyCount "75"]
[EventDate "2018.07.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CAN"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Nf3 Bg7 5. Be2 0-0 6. h3 b6 7. 0-0 c5 8. d5 a6 9. a4 e6 10. Bd3 e5 11. Rb1 Nbd7 12. Nd2 Rb8 13. Qe2 Ra8 14. Nc4 Ne8 15. b4 Rb8 16. bxc5 Nxc5 17. Be3 Bd7 18. Bxc5 dxc5 19. Na3 Qg5 20. Qe3 Qxe3 21. fxe3 Bh6 22. Rf3 f5 23. Bxa6 Nd6 24. Rbf1 fxe4 25. Rxf8+ Rxf8 26. Rxf8+ Kxf8 27. Kf2 Ke7 28. Nc4 Bg7 29. Nxb6 h5 30. Nc4 h4 31. a5 Bf5 32. Na4 Bf6 33. Nxc5 Nxc4 34. Bxc4 Kd6 35. a6 Kxc5 36. a7 Kxc4 37. a8Q Kc3 38. Qc6+ 1-0

[Event "Canadian op"]
[Site "Quebec"]
[Date "2018.07.07"]
[Round "1"]
[White "Acosta, Mariano"]
[Black "Kaufman, Raymond"]
[Result "0-1"]
[ECO "A38"]
[WhiteElo "1802"]
[BlackElo "2201"]
[PlyCount "62"]
[EventDate "2018.07.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CAN"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. Nf3 c5 2. c4 Nc6 3. b3 Nf6 4. Bb2 g6 5. g3 Bg7 6. Bg2 0-0 7. Nc3 d6 8. 0-0 e5 9. d3 h6 10. h3 Be6 11. e4 Nh7 12. Nd5 Qd7 13. Kh2 Ng5 14. Nxg5 hxg5 15. Qd2 f6 16. a3 Rf7 17. b4 Raf8 18. bxc5 dxc5 19. f3 Nd4 20. Bxd4 cxd4 21. Rab1 Qd8 22. Rb3 f5 23. Rfb1 b6 24. a4 g4 25. exf5 gxf5 26. a5 f4 27. fxg4 fxg3+ 28. Kxg3 e4 29. Bxe4 Be5+ 30. Kg2 Qh4 31. Bf5 Bxf5 0-1

[Event "American op 53rd"]
[Site "Costa Mesa"]
[Date "2017.11.23"]
[Round "1"]
[White "Peters, Jack"]
[Black "Acosta, Mariano"]
[Result "1-0"]
[ECO "B07"]
[WhiteElo "2344"]
[BlackElo "1916"]
[PlyCount "65"]
[EventDate "2017.11.23"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "USA"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 c6 4. Nf3 Nbd7 5. e5 Nd5 6. Nxd5 cxd5 7. e6 fxe6 8. Ng5 Nf6 9. Bb5+ Bd7 10. Nxe6 Qb6 11. a4 Bxb5 12. axb5 g6 13. Bd2 a5 14. 0-0 h6 15. Re1 Kf7 16. c4 dxc4 17. d5 Nxd5 18. Qf3+ Nf6 19. Be3 Qxb5 20. Nc7 Qc6 21. Nxa8 Qxf3 22. gxf3 Bg7 23. Nb6 Nh5 24. Rxa5 Bxb2 25. Ra7 Rb8 26. Nxc4 Bg7 27. Na5 Bc3 28. Rb1 Bxa5 29. Rxa5 g5 30. Rab5 Nf6 31. Rxb7 Rxb7 32. Rxb7 Nd5 33. Kg2 1-0

[Event "Douglas IoM op"]
[Site "Douglas"]
[Date "2017.10.01"]
[Round "9"]
[White "Nahnsen, Kenneth"]
[Black "Acosta, Mariano"]
[Result "1/2-1/2"]
[ECO "D11"]
[WhiteElo "2011"]
[BlackElo "1988"]
[PlyCount "90"]
[EventDate "2017.09.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "IOM"]
[SourceTitle "CBM 181"]
[Source "ChessBase"]
[SourceDate "2017.11.10"]
[SourceVersion "1"]
[SourceVersionDate "2017.11.10"]
[SourceQuality "1"]

1. Nf3 Nf6 2. g3 d5 3. Bg2 c6 4. 0-0 Bg4 5. Ne5 Bh5 6. d4 Nbd7 7. c4 e6 8. Nxd7 Qxd7 9. cxd5 cxd5 10. Nc3 Be7 11. Qb3 0-0 12. Bf4 Bg6 13. Rac1 Rac8 14. Rfd1 Rc6 15. f3 Rfc8 16. e4 Rb6 17. Qa4 Qxa4 18. Nxa4 Rbc6 19. e5 Nd7 20. Rxc6 Rxc6 21. Rc1 f6 22. Rxc6 bxc6 23. Bh3 Kf7 24. exf6 gxf6 25. Kf2 Bc2 26. b3 c5 27. dxc5 Nxc5 28. Be3 Nxa4 29. bxa4 a5 30. Bd2 Bc5+ 31. Ke1 Bb6 32. Bf1 Bxa4 33. Bd3 Bc6 34. Bxh7 f5 35. Bh6 d4 36. g4 Bxf3 37. gxf5 e5 38. Bg6+ Kg8 39. f6 Bd5 40. a4 Bc7 41. h4 e4 42. f7+ Bxf7 43. Bxe4 Bg3+ 44. Ke2 Bxh4 45. Kd3 Be8 1/2-1/2

[Event "Douglas IoM op"]
[Site "Douglas"]
[Date "2017.09.29"]
[Round "7"]
[White "Acosta, Mariano"]
[Black "Kruse, Janik"]
[Result "1/2-1/2"]
[ECO "C00"]
[WhiteElo "1988"]
[BlackElo "2096"]
[PlyCount "132"]
[EventDate "2017.09.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "IOM"]
[SourceTitle "CBM 181"]
[Source "ChessBase"]
[SourceDate "2017.11.10"]
[SourceVersion "1"]
[SourceVersionDate "2017.11.10"]
[SourceQuality "1"]

1. Nf3 b6 2. g3 Bb7 3. Bg2 e6 4. d3 d5 5. 0-0 Nf6 6. Nbd2 Be7 7. e4 0-0 8. e5 Nfd7 9. d4 c5 10. c3 Nc6 11. a3 a5 12. Re1 Re8 13. Nf1 f6 14. h4 fxe5 15. dxe5 c4 16. Bf4 Nc5 17. Bh3 Bc8 18. Re3 Nd3 19. Rxd3 cxd3 20. Qxd3 Rf8 21. Re1 Qe8 22. N1h2 Nd8 23. Bg5 Nf7 24. Bxe7 Qxe7 25. Nd4 Bd7 26. f4 Rae8 27. Nhf3 Qc5 28. Kg2 Qc4 29. Qd2 Nh6 30. Ng5 Nf5 31. Bxf5 exf5 32. Nh3 Be6 33. Qc2 g6 34. Ng5 Bc8 35. h5 Kg7 36. Rh1 h6 37. Ngf3 g5 38. fxg5 hxg5 39. g4 Kh8 40. b3 Qc7 41. gxf5 Rxe5 42. Nxe5 Qxe5 43. Rf1 Ba6 44. Rf2 Qe3 45. Rf3 Qe5 46. Qd2 Bc8 47. Re3 Qf4 48. Qf2 Qg4+ 49. Qg3 Bxf5 50. Nxf5 Qxf5 51. Qe5+ Kh7 52. Qxf5+ Rxf5 53. Re6 d4 54. cxd4 Rd5 55. Rxb6 Rxd4 56. Rb5 a4 57. b4 Rd3 58. Rxg5 Rxa3 59. Ra5 Kh6 60. Kf2 Ra1 61. b5 a3 62. b6 a2 63. b7 Rb1 64. Rxa2 Rxb7 65. Ra5 Rb4 66. Kg3 Rc4 1/2-1/2

[Event "Douglas IoM op"]
[Site "Douglas"]
[Date "2017.09.28"]
[Round "6"]
[White "Byron, Alan M"]
[Black "Acosta, Mariano"]
[Result "1-0"]
[ECO "B05"]
[WhiteElo "2074"]
[BlackElo "1988"]
[PlyCount "93"]
[EventDate "2017.09.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "IOM"]
[SourceTitle "CBM 181"]
[Source "ChessBase"]
[SourceDate "2017.11.10"]
[SourceVersion "1"]
[SourceVersionDate "2017.11.10"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. c4 Nb6 5. exd6 exd6 6. Nc3 Be7 7. Be2 0-0 8. Nf3 Bg4 9. b3 c6 10. 0-0 d5 11. c5 Nc8 12. h3 Bh5 13. g4 Bg6 14. Ne5 Nd7 15. Nxg6 hxg6 16. f4 b6 17. cxb6 axb6 18. Bf3 Nd6 19. Bg2 b5 20. Be3 Nb6 21. Qd3 b4 22. Ne2 f5 23. g5 Kf7 24. Rfc1 Qd7 25. Kh2 Rh8 26. Ng1 Ne4 27. Nf3 Bd6 28. Rc2 Qb7 29. Ne5+ Bxe5 30. dxe5 Rhd8 31. Bd4 Rac8 32. Rac1 Ke6 33. Qe2 Kf7 34. Qe3 Nd7 35. e6+ Kxe6 36. Bxg7 c5 37. Bxe4 fxe4 38. Qg3 Kf7 39. Be5 d4 40. Qh4 Qa6 41. Qh7+ Ke8 42. Bf6 Nxf6 43. Qxg6+ Kf8 44. gxf6 Qe6 45. Qg7+ Ke8 46. Rxc5 Rxc5 47. Rxc5 1-0

[Event "Douglas IoM op"]
[Site "Douglas"]
[Date "2017.09.27"]
[Round "5"]
[White "Lorscheid, Gerhard"]
[Black "Acosta, Mariano"]
[Result "1-0"]
[ECO "D94"]
[WhiteElo "2192"]
[BlackElo "1988"]
[PlyCount "59"]
[EventDate "2017.09.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "IOM"]
[SourceTitle "CBM 181"]
[Source "ChessBase"]
[SourceDate "2017.11.10"]
[SourceVersion "1"]
[SourceVersionDate "2017.11.10"]
[SourceQuality "1"]

1. c4 c6 2. d4 d5 3. Nc3 Nf6 4. e3 g6 5. Nf3 Bg7 6. Be2 0-0 7. 0-0 Bg4 8. Qb3 Qc8 9. cxd5 cxd5 10. Nxd5 Nxd5 11. Qxd5 Nc6 12. Qb3 e5 13. d5 Na5 14. Qb4 b6 15. h3 Bd7 16. Bd2 e4 17. Ng5 f5 18. Rac1 Qe8 19. Qa3 h6 20. Ne6 Bxe6 21. dxe6 Nb7 22. Rc7 Nc5 23. Bc4 Kh8 24. Bc3 Rf6 25. Rd1 Rd8 26. Rxd8 Qxd8 27. Rxg7 Kxg7 28. Qxa7+ Kh8 29. Qf7 Qd1+ 30. Bf1 1-0

[Event "Douglas IoM op"]
[Site "Douglas"]
[Date "2017.09.26"]
[Round "4"]
[White "Acosta, Mariano"]
[Black "Vaishali, Ramesh Babu"]
[Result "0-1"]
[ECO "D00"]
[WhiteElo "1988"]
[BlackElo "2329"]
[PlyCount "54"]
[EventDate "2017.09.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "IOM"]
[SourceTitle "CBM 181"]
[Source "ChessBase"]
[SourceDate "2017.11.10"]
[SourceVersion "1"]
[SourceVersionDate "2017.11.10"]
[SourceQuality "1"]

1. d4 Nf6 2. Bg5 d5 3. Nd2 g6 4. e3 Bg7 5. Bd3 0-0 6. h4 b6 7. Bxf6 exf6 8. h5 c5 9. c3 Ba6 10. Bxa6 Nxa6 11. hxg6 hxg6 12. Ne2 Re8 13. Qa4 Qc8 14. 0-0-0 Rb8 15. Rh4 b5 16. Qc2 b4 17. Rdh1 bxc3 18. bxc3 cxd4 19. Nxd4 Nc5 20. N4b3 f5 21. c4 Qa6 22. Nxc5 Qa3+ 23. Kd1 Qxc5 24. Nb3 Qa3 25. Rh7 dxc4 26. Qxc4 Qb2 27. Nd4 Rbc8 0-1

[Event "Douglas IoM op"]
[Site "Douglas"]
[Date "2017.09.24"]
[Round "2"]
[White "Rudolf, Anna"]
[Black "Acosta, Mariano"]
[Result "1-0"]
[ECO "C25"]
[WhiteElo "2286"]
[BlackElo "1988"]
[PlyCount "155"]
[EventDate "2017.09.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "IOM"]
[SourceTitle "CBM 181"]
[Source "ChessBase"]
[SourceDate "2017.11.10"]
[SourceVersion "1"]
[SourceVersionDate "2017.11.10"]
[SourceQuality "1"]

1. e4 e5 2. Nc3 Bc5 3. g3 d6 4. Bg2 a6 5. d3 Nc6 6. f4 exf4 7. Bxf4 Nge7 8. Qd2 Ng6 9. Bg5 f6 10. Be3 Bxe3 11. Qxe3 0-0 12. 0-0-0 Re8 13. h4 Nge5 14. h5 h6 15. d4 Nf7 16. Qf4 Ng5 17. Nf3 Nxf3 18. Bxf3 Rf8 19. g4 Ne7 20. d5 Bd7 21. Ne2 Kh8 22. Nd4 Qe8 23. Be2 Nc8 24. Nf3 Kg8 25. Bd3 Rf7 26. Rhg1 b5 27. Qd2 Nb6 28. e5 dxe5 29. Bg6 Nc4 30. Qc3 Rc8 31. Nd2 Nd6 32. Qd3 Qe7 33. Bxf7+ Qxf7 34. Kb1 Rd8 35. Ne4 Bc8 36. Nc5 a5 37. a3 Qe8 38. Ne4 Bb7 39. Nxd6 Rxd6 40. Qc3 Qd7 41. Qxa5 Bxd5 42. Kc1 Bf3 43. Rxd6 cxd6 44. Qb4 d5 45. b3 d4 46. a4 bxa4 47. bxa4 Bxg4 48. a5 Bf3 49. a6 Kh7 50. Qa3 Be4 51. Re1 Bd5 52. Qc5 Ba8 53. Kb2 Qc6 54. Qxc6 Bxc6 55. Kb3 g6 56. Kc4 gxh5 57. Kc5 Ba8 58. Rg1 h4 59. Rg4 h5 60. Rxh4 Kg6 61. Rh3 Kg5 62. Rg3+ Kf4 63. Rg8 Be4 64. a7 h4 65. a8Q Bxa8 66. Rxa8 h3 67. Rh8 Kg3 68. Rg8+ Kf4 69. Rf8 Ke4 70. Rxf6 h2 71. Rh6 d3 72. Rh4+ Ke3 73. Rh3+ Kd2 74. cxd3 h1Q 75. Rxh1 Kxd3 76. Rd1+ Ke2 77. Rd5 e4 78. Kd4 1-0

[Event "Douglas IoM op"]
[Site "Douglas"]
[Date "2017.09.23"]
[Round "1"]
[White "Acosta, Mariano"]
[Black "Xiong, Jeffery"]
[Result "0-1"]
[ECO "B23"]
[WhiteElo "1988"]
[BlackElo "2633"]
[PlyCount "54"]
[EventDate "2017.09.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "IOM"]
[SourceTitle "CBM 181"]
[Source "ChessBase"]
[SourceDate "2017.11.10"]
[SourceVersion "1"]
[SourceVersionDate "2017.11.10"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 d6 3. f4 Nc6 4. Bb5 Bd7 5. Nf3 g6 6. 0-0 Bg7 7. Bxc6 Bxc6 8. Qe1 Nf6 9. d3 Nd7 10. Bd2 b5 11. a4 b4 12. Nd1 0-0 13. Ra2 e6 14. b3 f5 15. Ng5 Qf6 16. c4 h6 17. Nf3 fxe4 18. dxe4 e5 19. g3 Rae8 20. Nf2 exf4 21. gxf4 Qe6 22. Bc1 Nf6 23. Bb2 Nxe4 24. Nxe4 Qxe4 25. Bxg7 Qxf3 26. Rxf3 Rxe1+ 27. Kf2 Kxg7 0-1

[Event "Veliko Gradiste Silver Lake op-A"]
[Site "Veliko Gradiste"]
[Date "2017.06.25"]
[Round "9"]
[White "Acosta, Mariano"]
[Black "Buyukasik, Diyap"]
[Result "0-1"]
[ECO "B23"]
[WhiteElo "1993"]
[BlackElo "2261"]
[PlyCount "80"]
[EventDate "2017.06.18"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SRB"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 a6 3. a4 Nc6 4. f4 e6 5. Nf3 d5 6. e5 Nh6 7. g3 Qb6 8. Bh3 g6 9. 0-0 Be7 10. d3 Bd7 11. Bd2 Nf5 12. Bxf5 gxf5 13. a5 Qc7 14. Ne2 0-0-0 15. Qe1 Rhg8 16. Qf2 Rg6 17. Rfb1 Rdg8 18. c3 c4 19. dxc4 dxc4 20. Be3 h5 21. b4 Nb8 22. Nfd4 h4 23. Kf1 hxg3 24. hxg3 f6 25. exf6 Bxf6 26. b5 Bxd4 27. Bxd4 Bxb5 28. Rxb5 axb5 29. Be5 Qc6 30. Qa7 Na6 31. Rd1 Nc7 32. a6 Qxa6 33. Qc5 Qc6 34. Qa7 Qh1+ 35. Kf2 Qxd1 36. Bxc7 Kxc7 37. Qc5+ Kb8 38. Qe5+ Ka8 39. Qxb5 Qd5 40. Qa4+ Kb8 0-1

[Event "Veliko Gradiste Silver Lake op-A"]
[Site "Veliko Gradiste"]
[Date "2017.06.24"]
[Round "8"]
[White "Radosavljevic, Slobodan S"]
[Black "Acosta, Mariano"]
[Result "0-1"]
[ECO "D02"]
[WhiteElo "2157"]
[BlackElo "1993"]
[PlyCount "66"]
[EventDate "2017.06.18"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SRB"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 c6 3. Nbd2 Bg4 4. e3 Nd7 5. c4 e6 6. Bd3 Ngf6 7. 0-0 Bd6 8. Qb3 Rb8 9. cxd5 exd5 10. e4 dxe4 11. Ng5 0-0 12. Ngxe4 Bc7 13. Bc4 Bh5 14. Re1 h6 15. Nf3 Nxe4 16. Rxe4 Nf6 17. Rh4 b5 18. Be2 Qd5 19. Bf4 Bxf4 20. Rxf4 Qxb3 21. axb3 Rfe8 22. Bf1 Nd5 23. Rf5 g6 24. Re5 Bxf3 25. gxf3 Rxe5 26. dxe5 Re8 27. Kg2 g5 28. Kg3 Nf4 29. Kg4 Rxe5 30. h4 h5+ 31. Kg3 Ne2+ 32. Bxe2 gxh4+ 33. Kf4 Rxe2 0-1

[Event "Veliko Gradiste Silver Lake op-A"]
[Site "Veliko Gradiste"]
[Date "2017.06.23"]
[Round "7"]
[White "Acosta, Mariano"]
[Black "Kukic, Boris"]
[Result "1/2-1/2"]
[ECO "D03"]
[WhiteElo "1993"]
[BlackElo "2042"]
[PlyCount "171"]
[EventDate "2017.06.18"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SRB"]
[SourceTitle "CBM 179 Extra"]
[Source "ChessBase"]
[SourceDate "2017.08.23"]
[SourceVersion "1"]
[SourceVersionDate "2017.08.23"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 b6 3. Bg5 Bb7 4. Nbd2 d5 5. Bxf6 gxf6 6. g3 Qd6 7. Bg2 Nd7 8. 0-0 f5 9. e3 e6 10. c4 h5 11. Re1 h4 12. Nxh4 Rxh4 13. gxh4 Nf6 14. cxd5 Bxd5 15. Bxd5 exd5 16. Qf3 Qe6 17. Rec1 0-0-0 18. Nf1 Bd6 19. Ng3 Rg8 20. Rc6 Kb7 21. Rac1 Ne4 22. Kh1 f4 23. exf4 f5 24. a4 Rg4 25. h5 Qf6 26. Nxe4 dxe4 27. Qc3 Qd8 28. a5 Bxf4 29. axb6 axb6 30. Rxb6+ Kc8 31. Ra1 Qd5 32. Qb3 Qxb3 33. Rxb3 Rh4 34. h3 Rxh5 35. Kg2 Kd7 36. Rh1 Rh4 37. f3 e3 38. Re1 Rh6 39. Rexe3 Rg6+ 40. Kf2 Rg3 41. Rb5 Rxh3 42. Rxf5 Rh2+ 43. Kg1 Bd6 44. Rb5 Kc6 45. Rbb3 Kd5 46. Red3 Rc2 47. Rdc3 Rd2 48. Rd3 Rc2 49. Kf1 Bg3 50. Rd1 Rf2+ 51. Kg1 Rc2 52. Rb5+ Kd6 53. Rg5 Bf4 54. Rg2 Be3+ 55. Kf1 Rc4 56. Rgd2 Kd5 57. Ke2 Bf4 58. Kf2 Rc6 59. Kf1 Rh6 60. Rc2 Bd6 61. Ke2 Re6+ 62. Kd3 Rf6 63. Rf2 Bf4 64. Ra1 Rb6 65. Ra5+ Ke6 66. Rc2 Bd6 67. Ra2 Kf5 68. Ke2 Rb4 69. Rd2 Kf4 70. Rd3 Rb8 71. d5 Re8+ 72. Kd2 Kf5 73. Ra4 Rb8 74. Kc2 Be5 75. b3 Rh8 76. Rd2 Rh3 77. Rf2 Bg3 78. Rf1 Ke5 79. Rd1 Rh2+ 80. Kc3 Rf2 81. Rd3 Kd6 82. Ra6+ Kc5 83. Rc6+ Kb5 84. Kd4 Re2 85. Rc5+ Kb4 86. Rc4+ 1/2-1/2

[Event "Veliko Gradiste Silver Lake op-A"]
[Site "Veliko Gradiste"]
[Date "2017.06.22"]
[Round "6"]
[White "Savic, Dragan"]
[Black "Acosta, Mariano"]
[Result "1-0"]
[ECO "B27"]
[WhiteElo "2126"]
[BlackElo "1993"]
[PlyCount "95"]
[EventDate "2017.06.18"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SRB"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 g6 3. c3 Bg7 4. Bc4 a6 5. a4 e6 6. Bb3 d5 7. exd5 exd5 8. Qe2+ Ne7 9. 0-0 0-0 10. d4 c4 11. Bc2 Nbc6 12. Bg5 h6 13. Bh4 g5 14. Bg3 Bf5 15. Re1 Qd7 16. Na3 Rae8 17. Qd2 Bxc2 18. Nxc2 Nf5 19. Ne3 Nxe3 20. Rxe3 Rxe3 21. Qxe3 Re8 22. Qd2 f5 23. h3 f4 24. Bh2 Na5 25. Qc2 Nb3 26. Rf1 Qxa4 27. Qf5 Qc6 28. h4 Rf8 29. Qg4 gxh4 30. Bxf4 h5 31. Qxh4 Bh6 32. Bxh6 Qxh6 33. Re1 Qg7 34. Kh1 Qg4 35. Qh2 Rxf3 36. gxf3 Qxf3+ 37. Qg2+ Qxg2+ 38. Kxg2 Kf7 39. Re5 a5 40. Rxd5 Ke6 41. Rb5 h4 42. Rxb7 Kf5 43. Rc7 Nd2 44. f3 a4 45. Ra7 h3+ 46. Kxh3 a3 47. Rxa3 Nxf3 48. Kg3 1-0

[Event "Veliko Gradiste Silver Lake op-A"]
[Site "Veliko Gradiste"]
[Date "2017.06.21"]
[Round "5"]
[White "Acosta, Mariano"]
[Black "Budisavljevic, Luka"]
[Result "1/2-1/2"]
[ECO "B23"]
[WhiteElo "1993"]
[BlackElo "2155"]
[PlyCount "93"]
[EventDate "2017.06.18"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SRB"]
[SourceTitle "CBM 179 Extra"]
[Source "ChessBase"]
[SourceDate "2017.08.23"]
[SourceVersion "1"]
[SourceVersionDate "2017.08.23"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 a6 3. f4 b5 4. Nf3 Bb7 5. d3 e6 6. Qe2 Nc6 7. Be3 Be7 8. g3 Nf6 9. Bg2 0-0 10. e5 Ng4 11. Bg1 d5 12. h3 Nh6 13. g4 Qa5 14. Qd2 Nb4 15. d4 Rac8 16. f5 Nxc2+ 17. Qxc2 cxd4 18. Bxd4 b4 19. 0-0 bxc3 20. bxc3 Bc5 21. Qf2 Qxc3 22. Rac1 Bxd4 23. Nxd4 Qa3 24. Rb1 Ba8 25. f6 Qd3 26. g5 Nf5 27. Rb4 Qe3 28. Nxf5 Qxf2+ 29. Rxf2 exf5 30. Rxf5 Rfd8 31. fxg7 Kxg7 32. Rf6 Rc6 33. h4 Re6 34. Rd4 Rxe5 35. Rxa6 Rb8 36. Rd2 Rb1+ 37. Kh2 Bb7 38. Rd6 Rb4 39. Kg3 Re3+ 40. Kf2 Ra3 41. h5 Rf4+ 42. Ke1 Rg4 43. h6+ Kf8 44. Bxd5 Bxd5 45. Rd8+ Ke7 46. R8xd5 Ke6 47. Rd6+ 1/2-1/2

[Event "Veliko Gradiste Silver Lake op-A"]
[Site "Veliko Gradiste"]
[Date "2017.06.19"]
[Round "2"]
[White "Acosta, Mariano"]
[Black "Isik, Alparslan"]
[Result "0-1"]
[ECO "D03"]
[WhiteElo "1993"]
[BlackElo "2161"]
[PlyCount "40"]
[EventDate "2017.06.18"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SRB"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. Bg5 Bg7 4. Nbd2 c5 5. e3 d5 6. c3 Nbd7 7. Bd3 0-0 8. 0-0 b6 9. a4 Bb7 10. a5 Ne4 11. Bf4 f6 12. Nxe4 dxe4 13. Bc4+ Kh8 14. Nd2 bxa5 15. Qa4 Nb6 16. Qxa5 e5 17. Bg3 cxd4 18. cxd4 exd4 19. Ba6 Bxa6 20. Qxa6 f5 0-1

[Event "Veliko Gradiste Silver Lake op-A"]
[Site "Veliko Gradiste"]
[Date "2017.06.19"]
[Round "3"]
[White "Milutinovic, Stefana"]
[Black "Acosta, Mariano"]
[Result "1-0"]
[ECO "D70"]
[WhiteElo "2140"]
[BlackElo "1993"]
[PlyCount "83"]
[EventDate "2017.06.18"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SRB"]
[SourceTitle "CBM 179 Extra"]
[Source "ChessBase"]
[SourceDate "2017.08.23"]
[SourceVersion "1"]
[SourceVersionDate "2017.08.23"]
[SourceQuality "1"]

1. Nf3 Nf6 2. d4 g6 3. c4 d5 4. cxd5 Nxd5 5. e4 Nb6 6. h3 Bg7 7. Nc3 0-0 8. Be2 Nc6 9. Be3 Na5 10. 0-0 Nac4 11. Bc1 e5 12. d5 Nd6 13. a4 a6 14. a5 Nd7 15. Ra3 h6 16. Nd2 b5 17. axb6 cxb6 18. Nc4 Nxc4 19. Bxc4 Bb7 20. Be2 b5 21. Ra1 Rc8 22. Be3 Nb6 23. Qd2 Kh7 24. b3 f5 25. f3 f4 26. Bf2 Rf6 27. Rfc1 Bf8 28. Na2 g5 29. Rxc8 Nxc8 30. Rc1 Rg6 31. Qc3 Bd6 32. Nb4 Ne7 33. Nd3 Qh8 34. Bc5 Nxd5 35. exd5 Bxc5+ 36. Qxc5 Rg8 37. Qe7+ Rg7 38. Qxe5 Qd8 39. d6 Qb6+ 40. Qc5 Qa5 41. Ne5 Qd2 42. Qc2+ 1-0

[Event "Veliko Gradiste Silver Lake op-A"]
[Site "Veliko Gradiste"]
[Date "2017.06.18"]
[Round "1"]
[White "Popovic, Aleksandar M"]
[Black "Acosta, Mariano"]
[Result "1-0"]
[ECO "A24"]
[WhiteElo "2262"]
[BlackElo "1993"]
[PlyCount "49"]
[EventDate "2017.06.18"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "SRB"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nf6 3. g3 g6 4. Bg2 Bg7 5. Nf3 d6 6. 0-0 0-0 7. d3 Nbd7 8. e4 a5 9. h3 Nc5 10. Be3 b6 11. Qd2 Re8 12. Rab1 Bd7 13. b3 h6 14. Bxh6 Bh8 15. Kh2 Ne6 16. Ne2 c5 17. Ng5 a4 18. Nc3 axb3 19. Rxb3 Nh7 20. Rb2 b5 21. cxb5 Ra3 22. b6 Bc6 23. Nd5 Bxd5 24. exd5 Nd4 25. Ne4 1-0

[Event "Southwest Class-ch 7th"]
[Site "Dallas"]
[Date "2016.02.14"]
[Round "6"]
[White "Webster, Brad W"]
[Black "Acosta, Mariano"]
[Result "0-1"]
[ECO "B07"]
[WhiteElo "1792"]
[BlackElo "2031"]
[PlyCount "60"]
[EventDate "2016.02.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 c6 4. f4 Qa5 5. Bd3 e5 6. Nf3 Bg4 7. dxe5 dxe5 8. fxe5 Nfd7 9. Bf4 Nxe5 10. Be2 Bxf3 11. Bxf3 Nbd7 12. a3 Be7 13. b4 Nxf3+ 14. Qxf3 Bxb4 15. Bd2 Bc5 16. Nd5 Qd8 17. Ne3 Qf6 18. Rb1 Qxf3 19. gxf3 Ne5 20. Ke2 0-0-0 21. Bc3 Bxe3 22. Kxe3 Nc4+ 23. Ke2 Rhe8 24. Rhg1 g6 25. Kf2 Nxa3 26. Ra1 Nb5 27. Bb4 a6 28. c4 Nd4 29. Bc3 Nb3 30. Ra2 Rd3 0-1

[Event "Southwest Class-ch 7th"]
[Site "Dallas"]
[Date "2016.02.12"]
[Round "2"]
[White "Acosta, Mariano"]
[Black "Bykovtsev, Agata"]
[Result "0-1"]
[ECO "A48"]
[WhiteElo "2031"]
[BlackElo "2176"]
[PlyCount "112"]
[EventDate "2016.02.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. Bg5 Bg7 4. Nbd2 d6 5. e4 h6 6. Bh4 g5 7. Bg3 Nh5 8. c3 e6 9. e5 Nxg3 10. hxg3 dxe5 11. Nxe5 Nd7 12. f4 Nxe5 13. fxe5 Bd7 14. Qb3 Bc6 15. Bb5 Qd7 16. a4 a6 17. Bxc6 Qxc6 18. Nf3 g4 19. Nh4 Qe4+ 20. Kf2 0-0-0 21. Rhe1 Qc6 22. Kg1 Rd7 23. Rf1 h5 24. Rae1 Bh6 25. Kh1 Bg5 26. Qa3 Re7 27. b4 Qd7 28. b5 a5 29. Re4 Qd8 30. Qa1 Qd5 31. Qb1 Bd2 32. Qd3 Bg5 33. Kg1 Qd8 34. Qe2 Rd7 35. Qe1 b6 36. Kh2 Qe7 37. Kg1 Rhd8 38. Qf2 Qa3 39. Qc2 Kb8 40. Kh2 Qe7 41. Qf2 Rg8 42. Kg1 Rg7 43. Kh1 Rd8 44. Qe1 Qa3 45. Qa1 Qb3 46. Rf2 Qc4 47. Rfe2 Rdg8 48. Qe1 Qxa4 49. d5 Qxb5 50. dxe6 fxe6 51. Rd4 Bxh4 52. gxh4 g3 53. Red2 Rg4 54. R2d3 Rxd4 55. Rxd4 a4 56. Rb4 Qc6 0-1

[Event "Southwest Class-ch 7th"]
[Site "Dallas"]
[Date "2016.02.12"]
[Round "3"]
[White "Eckert, Doug D"]
[Black "Acosta, Mariano"]
[Result "1-0"]
[ECO "A01"]
[WhiteElo "2190"]
[BlackElo "2031"]
[PlyCount "121"]
[EventDate "2016.02.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. b3 e5 2. Bb2 Nc6 3. e3 Nf6 4. c4 g6 5. Nf3 Qe7 6. Nc3 Bg7 7. d3 0-0 8. Be2 Rd8 9. e4 Nd4 10. 0-0 Nxf3+ 11. Bxf3 c6 12. d4 d6 13. Re1 h5 14. Qd2 Bg4 15. Bxg4 Nxg4 16. d5 Bh6 17. Qe2 c5 18. h3 Nf6 19. g3 Kg7 20. h4 Rh8 21. Nd1 Nd7 22. f4 f6 23. f5 gxf5 24. exf5 Rag8 25. Nf2 Kf8 26. Kh2 Qg7 27. Qf3 Ke7 28. Re4 Kd8 29. a3 Rh7 30. Rg1 Qf7 31. Rg2 Rhg7 32. Nd3 Rh7 33. b4 b6 34. Qd1 Rhg7 35. Qa4 Nb8 36. bxc5 dxc5 37. Qd1 Nd7 38. Bc3 Rg4 39. Nf2 R4g7 40. Nd3 Rg4 41. Rxg4 Rxg4 42. Qe2 b5 43. cxb5 Qxd5 44. Nf2 Ra4 45. Bb2 Qf7 46. Ne4 Bf8 47. Qf3 Ra5 48. Nc3 Nb8 49. Rd2+ Kc8 50. Qa8 Be7 51. a4 c4 52. Qe4 Bb4 53. Rd5 Qc7 54. Qc2 Qe7 55. Rd1 Qc7 56. Nd5 Qc5 57. Nxf6 Rxa4 58. Rd5 Qe7 59. Qxa4 Kb7 60. Rd7+ Kb6 61. Nd5+ 1-0

[Event "Southwest Class-ch 7th"]
[Site "Dallas"]
[Date "2016.02.11"]
[Round "1"]
[White "Hilby, Craig"]
[Black "Acosta, Mariano"]
[Result "1-0"]
[ECO "B75"]
[WhiteElo "2347"]
[BlackElo "2031"]
[PlyCount "54"]
[EventDate "2016.02.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 g6 3. d4 cxd4 4. Nxd4 Bg7 5. Nc3 Nc6 6. Be3 d6 7. Bc4 Nf6 8. f3 Qb6 9. 0-0 0-0 10. Bb3 Qd8 11. h3 Na5 12. f4 Nxb3 13. axb3 a6 14. Qf3 Nd7 15. Rad1 Rb8 16. b4 Re8 17. Qf2 Rf8 18. Nd5 e6 19. Nc3 Ra8 20. b5 Ra7 21. bxa6 Rxa6 22. Ndb5 Re8 23. Rd2 Rc6 24. Rfd1 Nf8 25. Bd4 Bh6 26. Rd3 Bd7 27. f5 Bg7 1-0

[Event "Bayern-chI Bank Hofmann 19th"]
[Site "Bad Wiessee"]
[Date "2015.11.06"]
[Round "7"]
[White "Acosta, Mariano"]
[Black "Pieper, Thomas"]
[Result "0-1"]
[ECO "A48"]
[WhiteElo "1981"]
[BlackElo "2274"]
[PlyCount "80"]
[EventDate "2015.10.31"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. Bg5 Bg7 4. Nbd2 d6 5. e4 0-0 6. h3 c5 7. c3 Nc6 8. d5 Nb8 9. c4 e6 10. Bd3 Re8 11. 0-0 Na6 12. a3 Nc7 13. b4 h6 14. Be3 exd5 15. exd5 cxb4 16. axb4 b5 17. Rxa7 Rxe3 18. Rxa8 Rxd3 19. Ra2 bxc4 20. Ne1 Rxd5 21. Qc1 c3 22. Qxc3 Ne4 23. Qe3 Nc3 24. Ra5 Ba6 25. b5 Bxb5 26. Qb6 Bxf1 27. Nxf1 Ne2+ 28. Kh2 Rxa5 29. Qxa5 Qe7 30. Nf3 d5 31. Qd2 d4 32. g3 Qe4 33. Ne1 Kh7 34. f3 Qe7 35. Kg2 h5 36. Kf2 Nc3 37. Nc2 Ne6 38. h4 Qf6 39. Qd3 Nc5 40. Qc4 Qe6 0-1

[Event "American Continental 11th"]
[Site "Montevideo"]
[Date "2015.05.24"]
[Round "11"]
[White "Teixeira, Ricardo da Silva"]
[Black "Acosta, Mariano"]
[Result "1-0"]
[ECO "A26"]
[WhiteElo "2223"]
[BlackElo "1967"]
[PlyCount "119"]
[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. c4 g6 2. Nc3 Bg7 3. g3 e5 4. e4 Nc6 5. Bg2 d6 6. Nge2 Nge7 7. d3 Nd4 8. Nxd4 exd4 9. Ne2 f5 10. Bg5 fxe4 11. Bxe4 c6 12. Qd2 0-0 13. h4 Bf5 14. h5 Qd7 15. hxg6 Nxg6 16. Bxf5 Qxf5 17. f4 Rae8 18. Bh6 Re3 19. Bxg7 Kxg7 20. 0-0-0 c5 21. Kb1 Qg4 22. Nc1 Qxg3 23. Rdg1 Qxf4 24. Qg2 Qf7 25. Qh2 Kg8 26. Qxd6 b6 27. Qh2 Re6 28. Ne2 Rf6 29. Ng3 Rf2 30. Qh5 Qg7 31. Ne4 R2f5 32. Qh2 Rf4 33. Qg2 Kh8 34. Ng5 Rh4 35. Ne6 Rxh1 36. Qxh1 Qf7 37. Nxf8 Nxf8 38. Qa8 Qf5 39. Ka1 a5 40. a3 Qf2 41. Qg2 Qxg2 42. Rxg2 Ng6 43. b4 axb4 44. axb4 Kg7 45. bxc5 bxc5 46. Rg5 Kf6 47. Rxc5 Nf4 48. Kb1 h5 49. Kc2 h4 50. Ra5 h3 51. Ra1 Kg5 52. c5 Nd5 53. Kb3 Kg4 54. Kc4 Ne3+ 55. Kb5 Kg3 56. c6 h2 57. c7 Nf5 58. Kc5 Ne7 59. Kxd4 Kg2 60. Ke5 1-0

[Event "American Continental 11th"]
[Site "Montevideo"]
[Date "2015.05.23"]
[Round "10"]
[White "Acosta, Mariano"]
[Black "Rodriguez, Paulo Virgilio Rios"]
[Result "1-0"]
[ECO "A06"]
[WhiteElo "1967"]
[BlackElo "2072"]
[PlyCount "122"]
[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. b3 Nf6 2. Bb2 d5 3. Nf3 c6 4. e3 Bg4 5. d4 Nbd7 6. Nbd2 e6 7. h3 Bh5 8. g4 Bg6 9. Nh4 Bd6 10. Nxg6 hxg6 11. Bg2 Qa5 12. a3 Qc7 13. c4 g5 14. b4 b5 15. c5 Be7 16. a4 a6 17. axb5 cxb5 18. Bf1 Ra7 19. Bd3 Nb8 20. Bc3 Kf8 21. Qf3 g6 22. 0-0 Kg7 23. Qe2 Nc6 24. f4 gxf4 25. exf4 Qd7 26. Rae1 Raa8 27. f5 Nh7 28. Nf3 Ng5 29. h4 Nxf3+ 30. Qxf3 Bxh4 31. f6+ Kf8 32. Ra1 Qc7 33. Bxb5 Bxf6 34. Qf4 Bxd4+ 35. Bxd4 Qxf4 36. Rxf4 Nxd4 37. Rxd4 Ke7 38. Rxa6 Rab8 39. Ra7+ Kf6 40. Be2 Ke5 41. Rd2 Rxb4 42. Rxf7 Rb1+ 43. Kf2 Rc1 44. Rc7 Rh2+ 45. Kg3 Rhh1 46. Bf3 Rc3 47. Re2+ Kf6 48. Rc6 Rf1 49. Rexe6+ Kf7 50. Rf6+ Ke7 51. Rce6+ Kd8 52. c6 d4 53. Rf8+ Kc7 54. Rxg6 d3 55. Rf7+ Kb6 56. c7+ Ka5 57. Rf5+ Kb4 58. Rb6+ Ka4 59. Rf8 Ka5 60. Rb2 Rxf3+ 61. Kxf3 d2+ 1-0

[Event "American Continental 11th"]
[Site "Montevideo"]
[Date "2015.05.22"]
[Round "9"]
[White "Gomez Troccoli, Martin"]
[Black "Acosta, Mariano"]
[Result "0-1"]
[ECO "B06"]
[WhiteElo "1761"]
[BlackElo "1967"]
[PlyCount "54"]
[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. d4 Bg7 3. Nf3 d6 4. Bd3 e5 5. c3 Nc6 6. 0-0 exd4 7. cxd4 Bxd4 8. Nxd4 Nxd4 9. Bc4 Nc6 10. f4 Nge7 11. f5 Ne5 12. fxg6 hxg6 13. Bb3 N7c6 14. Nc3 Qh4 15. Bf4 Bg4 16. Qd5 0-0-0 17. Ba4 Be6 18. Qd2 Nc4 19. Qf2 Qxf2+ 20. Rxf2 N6e5 21. Bg5 Rdg8 22. Nd5 Bxd5 23. exd5 f5 24. Bc2 Ng4 25. Re2 Rxh2 26. Bf6 Rh7 27. Bd4 Nce5 0-1

[Event "American Continental 11th"]
[Site "Montevideo"]
[Date "2015.05.21"]
[Round "8"]
[White "Acosta, Mariano"]
[Black "Sabas, Jorge"]
[Result "0-1"]
[ECO "D03"]
[WhiteElo "1967"]
[BlackElo "2254"]
[PlyCount "92"]
[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 c6 2. Nf3 d5 3. c3 Nf6 4. Bg5 Ne4 5. Bh4 Bf5 6. Nbd2 Nd7 7. e3 h6 8. Qb3 Qb6 9. a4 e6 10. a5 Qxb3 11. Nxb3 a6 12. Nfd2 g5 13. Nxe4 gxh4 14. Ned2 Be7 15. Nc1 e5 16. dxe5 Nxe5 17. Nf3 Nxf3+ 18. gxf3 Rg8 19. Bd3 Be6 20. Ne2 0-0-0 21. b4 Kb8 22. Nd4 Bf6 23. Ke2 Bh3 24. Rhg1 Rde8 25. Bh7 Rg2 26. Rxg2 Bxg2 27. Bf5 Rg8 28. h3 Kc7 29. Bg4 h5 30. Bxh5 Bxh3 31. Bxf7 Rh8 32. Rh1 Bc8 33. f4 Kd6 34. Kd2 Bxd4 35. cxd4 Bf5 36. f3 Ke7 37. e4 dxe4 38. fxe4 Bxe4 39. Re1 Kxf7 40. Rxe4 h3 41. Re1 h2 42. Rh1 Kf6 43. Kd3 Kf5 44. Kc4 Kxf4 45. d5 cxd5+ 46. Kxd5 Kg3 0-1

[Event "American Continental 11th"]
[Site "Montevideo"]
[Date "2015.05.20"]
[Round "7"]
[White "Pena, Luis"]
[Black "Acosta, Mariano"]
[Result "0-1"]
[ECO "B06"]
[WhiteElo "1680"]
[BlackElo "1967"]
[PlyCount "112"]
[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. d4 Bg7 3. c3 c6 4. Bd3 d6 5. Be3 Nd7 6. Nf3 e5 7. 0-0 Ngf6 8. Qe2 0-0 9. Nbd2 h6 10. Bc2 Ng4 11. Rad1 Nxe3 12. Qxe3 Qe7 13. Bb3 b5 14. g3 Nb6 15. Nh4 Kh7 16. Ng2 Bh3 17. dxe5 dxe5 18. Rfe1 Rfd8 19. Qf3 Be6 20. Bxe6 Qxe6 21. Nb3 Na4 22. Qe2 Bf8 23. Ne3 Nc5 24. Nxc5 Bxc5 25. a3 h5 26. Rd3 Rxd3 27. Qxd3 Bb6 28. Rd1 Rd8 29. Qe2 Rxd1+ 30. Nxd1 Kg7 31. Qd3 h4 32. Qf3 hxg3 33. hxg3 Qf6 34. Qe2 Qg5 35. Kg2 Qc1 36. Kh3 c5 37. Kg2 c4 38. Kf1 Kf6 39. Qf3+ Ke7 40. Qe2 a6 41. Kg2 a5 42. g4 Qg5 43. f3 a4 44. Nf2 Qe3 45. Qc2 Qxf2+ 46. Qxf2 Bxf2 47. Kxf2 Kf6 48. Ke2 Kg5 49. Ke3 f6 50. Kd2 Kf4 51. Ke2 Kg3 52. Ke3 g5 53. Ke2 Kg2 54. Ke3 Kf1 55. f4 gxf4+ 56. Kf3 Ke1 0-1

[Event "American Continental 11th"]
[Site "Montevideo"]
[Date "2015.05.19"]
[Round "6"]
[White "Acosta, Mariano"]
[Black "Sosa Macho, Juan Manuel"]
[Result "0-1"]
[ECO "A05"]
[WhiteElo "1967"]
[BlackElo "2137"]
[PlyCount "70"]
[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 Nf6 2. g3 b6 3. Bg2 Bb7 4. d3 e6 5. e4 d6 6. 0-0 Nbd7 7. a4 a5 8. Nc3 Be7 9. Re1 e5 10. Nh4 g6 11. Bh6 Bf8 12. Qd2 Bxh6 13. Qxh6 Nf8 14. Nd5 Nxd5 15. exd5 Qf6 16. c4 Nd7 17. d4 0-0-0 18. Bh3 exd4 19. b4 axb4 20. Qd2 d3 21. Qxb4 Qd4 22. Nf3 Qc5 23. Qxc5 bxc5 24. Ng5 Rdf8 25. Re7 f5 26. Bf1 d2 27. Rd1 Re8 28. Rxe8+ Rxe8 29. Nf3 Ne5 30. Nxd2 g5 31. Bh3 g4 32. Bg2 Ba6 33. Bf1 Kd7 34. Re1 Rb8 35. h3 Rb2 0-1

[Event "American Continental 11th"]
[Site "Montevideo"]
[Date "2015.05.18"]
[Round "5"]
[White "Menna Barreto, Felipe Kubiaki"]
[Black "Acosta, Mariano"]
[Result "1-0"]
[ECO "C54"]
[WhiteElo "2271"]
[BlackElo "1967"]
[PlyCount "103"]
[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 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. e5 d5 7. Bb5 Ne4 8. cxd4 Bb4+ 9. Bd2 Bxd2+ 10. Nbxd2 0-0 11. Bxc6 bxc6 12. Qe2 Nxd2 13. Nxd2 f6 14. 0-0 c5 15. dxc5 Qe7 16. Qd3 Qxc5 17. Rac1 Qb6 18. exf6 Qxf6 19. Rxc7 Bf5 20. Qxd5+ Kh8 21. Ne4 Bxe4 22. Qxe4 Qxb2 23. Qc2 Qf6 24. Qc3 h6 25. Qxf6 Rxf6 26. Rfc1 Raf8 27. R1c2 a6 28. Rd2 Rb6 29. g3 a5 30. Ra7 Rb5 31. Kg2 Rbf5 32. f4 R8f6 33. Rd8+ Kh7 34. Rdd7 Rg6 35. Kf3 Rc5 36. Rac7 Rxc7 37. Rxc7 Rb6 38. Ra7 Rb2 39. Rxa5 Rxh2 40. a4 Ra2 41. Kg4 Ra3 42. Ra7 Kg6 43. f5+ Kf6 44. Ra6+ Kf7 45. Kf4 Ra1 46. a5 Ra4+ 47. Ke5 Rg4 48. Ra7+ Kg8 49. a6 Rxg3 50. Rb7 Ra3 51. a7 Ra5+ 52. Kd4 1-0

[Event "American Continental 11th"]
[Site "Montevideo"]
[Date "2015.05.17"]
[Round "4"]
[White "Acosta, Mariano"]
[Black "Layes, Mario"]
[Result "1-0"]
[ECO "D03"]
[WhiteElo "1967"]
[PlyCount "71"]
[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 Nf6 2. Nf3 e6 3. Bg5 d5 4. Nbd2 c6 5. e3 Nbd7 6. Bd3 h6 7. Bh4 Be7 8. c3 0-0 9. 0-0 c5 10. Ne5 Nxe5 11. dxe5 Nd7 12. Bg3 b6 13. Nf3 Bb7 14. Qe2 Qc8 15. Rfd1 f6 16. Nh4 fxe5 17. Ng6 Rf7 18. Nxe5 Nxe5 19. Bxe5 Bf6 20. Bg3 Qc6 21. f3 d4 22. cxd4 Be7 23. dxc5 Raf8 24. Be4 Qc8 25. Bxb7 Qxb7 26. cxb6 axb6 27. Rac1 Bc5 28. Rc4 Rf5 29. Re4 Qe7 30. Qc4 Re8 31. a4 Kh7 32. b4 Qf6 33. bxc5 Rxc5 34. Qb3 Rec8 35. Rxe6 Qf8 36. Bd6 1-0

[Event "American Continental 11th"]
[Site "Montevideo"]
[Date "2015.05.17"]
[Round "3"]
[White "Sanhueza, Cristian"]
[Black "Acosta, Mariano"]
[Result "1-0"]
[ECO "B07"]
[WhiteElo "2195"]
[BlackElo "1967"]
[PlyCount "153"]
[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. d4 Bg7 3. Nc3 d6 4. g3 Nd7 5. Bg2 e5 6. Nge2 Ngf6 7. 0-0 0-0 8. h3 Re8 9. Re1 c6 10. a4 a5 11. b3 exd4 12. Nxd4 Nc5 13. Ba3 Qb6 14. Bb2 Bd7 15. Qd2 Rad8 16. Rad1 Bc8 17. Kh2 Ne6 18. Nxe6 fxe6 19. Qe3 Qc7 20. e5 dxe5 21. Ne4 Nd5 22. Qg5 Rf8 23. h4 Nb4 24. Rxd8 Qxd8 25. Re2 Nd5 26. Qxd8 Rxd8 27. Rd2 Rf8 28. Nd6 e4 29. Bxg7 Kxg7 30. Nxe4 e5 31. Nd6 Nf6 32. Nc4 e4 33. Nxa5 e3 34. fxe3 Ng4+ 35. Kg1 Nxe3 36. Re2 Nf5 37. Kh2 Rf7 38. Re8 Rc7 39. Nc4 b5 40. Nb6 bxa4 41. Nxc8 a3 42. Nb6 Re7 43. Ra8 Re2 44. Nc4 Nd4 45. Rxa3 Rxc2 46. g4 g5 47. Ra7+ Kf6 48. hxg5+ Kxg5 49. Rxh7 Nxb3 50. Ne3 Rc3 51. Re7 Nd4 52. Kg3 c5 53. Bd5 Kf6 54. Re8 Ra3 55. Bc4 Ra4 56. Kf4 Ne2+ 57. Kf3 Nd4+ 58. Ke4 Nc2 59. Kd5 Nxe3+ 60. Rxe3 Kg5 61. Re4 Ra5 62. Kd6 Kh4 63. Be6 Kg5 64. Re5+ Kf6 65. Rf5+ Kg6 66. Rxc5 Ra6+ 67. Ke5 Ra1 68. Kd6 Ra6+ 69. Ke7 Ra7+ 70. Bd7 Rb7 71. Rf5 Rb4 72. Be8+ Kg7 73. Rg5+ Kh6 74. Rg6+ Kh7 75. Kf8 Rb8 76. Rg5 Rb6 77. Rh5+ 1-0

[Event "American Continental 11th"]
[Site "Montevideo"]
[Date "2015.05.16"]
[Round "2"]
[White "Acosta, Mariano"]
[Black "Montenegro, Claudia"]
[Result "1-0"]
[ECO "D03"]
[WhiteElo "1967"]
[BlackElo "1628"]
[PlyCount "127"]
[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 d5 2. Nf3 Nf6 3. c3 e6 4. Bg5 Be7 5. Nbd2 c5 6. e3 0-0 7. Bd3 Nbd7 8. 0-0 b6 9. Ne5 Nxe5 10. dxe5 Nd7 11. Bf4 a5 12. Qh5 g6 13. Qe2 c4 14. Bc2 Nc5 15. Nf3 Nd3 16. Bh6 Re8 17. Rfb1 Ba6 18. Bxd3 cxd3 19. Qd2 Qc7 20. Bf4 Rec8 21. Ne1 Qc4 22. Rd1 b5 23. Nxd3 b4 24. cxb4 axb4 25. h3 Kg7 26. Bg3 Qc2 27. Ne1 Qc4 28. Nf3 Bb5 29. Nd4 Bd7 30. Qd3 Rc7 31. b3 Qc3 32. f3 Qxd3 33. Rxd3 Rc3 34. Rxc3 bxc3 35. Be1 Rc8 36. Rc1 Bb4 37. Kf2 f6 38. exf6+ Kxf6 39. Ne2 Ra8 40. Bxc3+ Bxc3 41. Nxc3 Ra3 42. Rc2 Ke7 43. f4 Kd6 44. Ke1 h6 45. h4 Ke7 46. Kd2 Kd6 47. Kc1 Ke7 48. Kd2 Kd6 49. Kc1 Ra7 50. Kb2 Ke7 51. Ne2 Kd6 52. Rd2 Ke7 53. a4 Kf6 54. Nc3 Kf5 55. Ka3 Kg4 56. b4 Kxh4 57. b5 Kg3 58. b6 Rb7 59. a5 h5 60. Kb4 h4 61. Kc5 Kg4 62. a6 Rb8 63. b7 Kf5 64. Kb6 1-0

[Event "American Continental 11th"]
[Site "Montevideo"]
[Date "2015.05.15"]
[Round "1"]
[White "Supi, Luis Paulo"]
[Black "Acosta, Mariano"]
[Result "1-0"]
[ECO "D88"]
[WhiteElo "2416"]
[BlackElo "1967"]
[PlyCount "74"]
[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 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Bc4 c5 8. Ne2 cxd4 9. cxd4 Nc6 10. Be3 0-0 11. 0-0 b6 12. Rc1 Bb7 13. h4 Na5 14. Bd3 Rc8 15. h5 e6 16. Qd2 Nc6 17. e5 Ne7 18. Rxc8 Qxc8 19. Bh6 Qc6 20. f3 Nf5 21. Bxf5 exf5 22. Bxg7 Kxg7 23. Rc1 Qd7 24. Qg5 f6 25. Qe3 Ba6 26. Nf4 Rc8 27. h6+ Kf8 28. Rxc8+ Bxc8 29. exf6 Kf7 30. Nh3 g5 31. Nxg5+ Kxf6 32. Nh3 Qe6 33. Qg5+ Kf7 34. Qg7+ Ke8 35. Qxh7 Qe3+ 36. Kh2 Qxd4 37. Qg8+ Ke7 1-0

[Event "London Classic op 6th"]
[Site "London"]
[Date "2014.12.14"]
[Round "9"]
[White "Quinn, John M"]
[Black "Acosta, Mariano"]
[Result "1-0"]
[ECO "D97"]
[WhiteElo "2131"]
[BlackElo "1981"]
[PlyCount "59"]
[EventDate "2014.12.08"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ENG"]
[SourceTitle "CBM 163 Extra"]
[Source "ChessBase"]
[SourceDate "2014.12.23"]
[SourceVersion "1"]
[SourceVersionDate "2014.12.23"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. Qb3 dxc4 6. Qxc4 a6 7. e4 0-0 8. Be2 b5 9. Qb3 c5 10. dxc5 Nbd7 11. Be3 Qc7 12. 0-0 Nxc5 13. Qb4 Ncd7 14. Rac1 Qd6 15. Qb3 Bb7 16. Rfd1 Qe6 17. e5 Qxb3 18. axb3 Bxf3 19. exf6 Bxe2 20. fxg7 Rfd8 21. Nxe2 Kxg7 22. h3 Nf8 23. Rxd8 Rxd8 24. Rc6 a5 25. Rc5 Rd1+ 26. Kh2 Re1 27. Nd4 a4 28. Rxb5 axb3 29. Rxb3 f6 30. Rb7 1-0

[Event "London Classic op 6th"]
[Site "London"]
[Date "2014.12.13"]
[Round "7"]
[White "Acosta, Mariano"]
[Black "Terzo, Andrea"]
[Result "1-0"]
[ECO "D06"]
[WhiteElo "1981"]
[BlackElo "1809"]
[PlyCount "103"]
[EventDate "2014.12.08"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ENG"]
[SourceTitle "CBM 163 Extra"]
[Source "ChessBase"]
[SourceDate "2014.12.23"]
[SourceVersion "1"]
[SourceVersionDate "2014.12.23"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. e3 Bf5 4. c4 e6 5. Qb3 Nc6 6. cxd5 Nxd5 7. Nc3 Na5 8. Qd1 Bb4 9. Bd2 Nxc3 10. bxc3 Bd6 11. c4 c5 12. Qa4+ Nc6 13. d5 exd5 14. cxd5 0-0 15. dxc6 bxc6 16. Bc4 Qf6 17. 0-0 Qg6 18. Nh4 Qh5 19. g3 Bh3 20. Rfd1 Bg4 21. Bc3 Bxd1 22. Qxd1 Qxd1+ 23. Rxd1 Rfd8 24. Nf3 Be7 25. Rxd8+ Rxd8 26. Ne5 Rd1+ 27. Kg2 Rc1 28. Bxf7+ Kf8 29. Ba5 Bf6 30. Nd3 Rd1 31. Bc4 Ke7 32. h4 Rb1 33. Kf3 Ke8 34. Nxc5 Rc1 35. Ne4 Be7 36. Bb3 c5 37. Bd2 Rh1 38. Bc3 Bf8 39. Ke2 h6 40. Kd3 Kd7 41. Kc4 Rf1 42. Kb5 Kc7 43. Be5+ Kc8 44. Ka6 Rc1 45. Nd2 g5 46. hxg5 hxg5 47. Kxa7 Rh1 48. Kb6 Rh6+ 49. Kb5 Kd7 50. Ne4 Rh2 51. g4 Rg2 52. Bg3 1-0

[Event "London Classic op 6th"]
[Site "London"]
[Date "2014.12.12"]
[Round "5"]
[White "Guthrie, David"]
[Black "Acosta, Mariano"]
[Result "1-0"]
[ECO "D85"]
[WhiteElo "2209"]
[BlackElo "1981"]
[PlyCount "97"]
[EventDate "2014.12.08"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ENG"]
[SourceTitle "CBM 163 Extra"]
[Source "ChessBase"]
[SourceDate "2014.12.23"]
[SourceVersion "1"]
[SourceVersionDate "2014.12.23"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Nf3 c5 8. Rb1 Nc6 9. d5 Bxc3+ 10. Bd2 Bxd2+ 11. Qxd2 Nd4 12. Nxd4 cxd4 13. Bb5+ Bd7 14. Bxd7+ Qxd7 15. Qxd4 0-0 16. 0-0 b6 17. Rfd1 f5 18. e5 f4 19. Rb3 Rf5 20. d6 Raf8 21. Rc3 exd6 22. exd6 R5f7 23. Re1 Rd8 24. Rd1 Qe6 25. a4 Rfd7 26. Rc6 Qf5 27. h3 g5 28. Re1 h6 29. Re7 Rxe7 30. dxe7 Re8 31. Rxh6 Rxe7 32. Qh8+ Kf7 33. Rh7+ Qxh7 34. Qxh7+ Kf6 35. Qh6+ Kf5 36. Qf8+ Ke6 37. Kf1 Rf7 38. Qg8 Kf6 39. Qd8+ Kg6 40. Ke2 f3+ 41. gxf3 Rf4 42. Ke3 Rf6 43. Qe8+ Kh6 44. Qe7 Kg6 45. Qxa7 Re6+ 46. Kd4 Rf6 47. Kc4 Rf4+ 48. Kb5 Rxf3 49. Qxb6+ 1-0

[Event "London Classic op 6th"]
[Site "London"]
[Date "2014.12.10"]
[Round "3"]
[White "Farkas, Lajos"]
[Black "Acosta, Mariano"]
[Result "0-1"]
[ECO "C41"]
[WhiteElo "2219"]
[BlackElo "1981"]
[PlyCount "104"]
[EventDate "2014.12.08"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ENG"]
[SourceTitle "CBM 163 Extra"]
[Source "ChessBase"]
[SourceDate "2014.12.23"]
[SourceVersion "1"]
[SourceVersionDate "2014.12.23"]
[SourceQuality "1"]

1. d4 d6 2. Nf3 Nd7 3. e4 e5 4. Bc4 c6 5. dxe5 dxe5 6. c3 Bc5 7. b4 Bb6 8. Qb3 Qe7 9. Bg5 Ngf6 10. Nbd2 h6 11. Bh4 a5 12. Rd1 Bc7 13. a3 0-0 14. 0-0 g5 15. Bg3 Nh5 16. Rfe1 Nxg3 17. hxg3 Nf6 18. Nf1 b5 19. Bd3 Ng4 20. N3h2 Bb6 21. Nxg4 Bxg4 22. Rc1 Rfd8 23. c4 axb4 24. axb4 Be6 25. Qb1 Ra3 26. c5 Rb3 27. Qa1 Bc7 28. Bb1 Rxb4 29. Ne3 Rd2 30. Qa8+ Kg7 31. Qxc6 Rbb2 32. Rcd1 Ba5 33. Rxd2 Bxd2 34. Rf1 Bb4 35. Qxb5 Qxc5 36. Qe8 Bc3 37. Rc1 Qb4 38. Bd3 Rd2 39. Nd5 Bxd5 40. exd5 Rxd3 41. Qd7 Qc5 42. d6 Rxd6 43. Rxc3 Qxf2+ 44. Kxf2 Rxd7 45. g4 Rd4 46. Kf3 Rd2 47. Rc6 e4+ 48. Kg3 Rd3+ 49. Kf2 Rd2+ 50. Kg3 e3 51. Rc3 e2 52. Re3 Rd3 0-1

[Event "London Classic op 6th"]
[Site "London"]
[Date "2014.12.09"]
[Round "2"]
[White "Acosta, Mariano"]
[Black "Kouchak, Jason"]
[Result "1-0"]
[ECO "A11"]
[WhiteElo "1981"]
[BlackElo "1720"]
[PlyCount "95"]
[EventDate "2014.12.08"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ENG"]
[SourceTitle "CBM 163 Extra"]
[Source "ChessBase"]
[SourceDate "2014.12.23"]
[SourceVersion "1"]
[SourceVersionDate "2014.12.23"]
[SourceQuality "1"]

1. Nf3 d5 2. c4 c6 3. g3 Nf6 4. Bg2 Bg4 5. h3 Bxf3 6. Bxf3 e6 7. 0-0 Bd6 8. d4 Nbd7 9. cxd5 exd5 10. Nc3 0-0 11. Bg2 Re8 12. Rb1 h6 13. b4 a6 14. a4 b5 15. a5 Rc8 16. Qd3 Qe7 17. Ba3 Ne4 18. e3 f5 19. Rb3 g5 20. Ne2 Ndf6 21. Rfb1 Bb8 22. Bb2 Qd6 23. Bc3 Re7 24. Be1 Rg7 25. f3 Nh5 26. fxe4 fxe4 27. Qc2 Rf7 28. Rc1 Ng7 29. Rc3 Rf6 30. Rb3 Nf5 31. Qc5 Qd7 32. Qb6 Kg7 33. Qxa6 c5 34. Qxf6+ Kxf6 35. bxc5 Ba7 36. Rcb1 Rb8 37. Bf2 Ne7 38. Nc3 b4 39. Rxb4 Rxb4 40. Rxb4 Nc6 41. Rb5 Nxd4 42. exd4 Qf5 43. Rb7 e3 44. Bxe3 Qd3 45. Nxd5+ Ke6 46. Rxa7 Qd1+ 47. Kh2 h5 48. Re7+ 1-0

[Event "London Classic op 6th"]
[Site "London"]
[Date "2014.12.08"]
[Round "1"]
[White "Williams, Simon Kim"]
[Black "Acosta, Mariano"]
[Result "1-0"]
[ECO "D90"]
[WhiteElo "2443"]
[BlackElo "1981"]
[PlyCount "79"]
[EventDate "2014.12.08"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ENG"]
[SourceTitle "CBM 163 Extra"]
[Source "ChessBase"]
[SourceDate "2014.12.23"]
[SourceVersion "1"]
[SourceVersionDate "2014.12.23"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. h4 0-0 6. h5 Nxh5 7. cxd5 c5 8. e4 Bg4 9. dxc5 Qa5 10. Be2 Qxc5 11. Rh4 Bxf3 12. Bxf3 Bxc3+ 13. bxc3 Qxc3+ 14. Bd2 Qf6 15. g3 Ng7 16. Kf1 Nd7 17. Kg2 Ne5 18. Be2 Rac8 19. Be3 g5 20. Rh2 Qg6 21. Qd4 f6 22. Rah1 Rc2 23. Rh6 Qxh6 24. Rxh6 Rxe2 25. Qd1 Rxa2 26. d6 e6 27. Qb1 Re2 28. Rh1 Nc4 29. Bxa7 f5 30. Qd3 Ra2 31. Qxc4 Rxa7 32. d7 Raa8 33. exf5 b5 34. Qc6 exf5 35. Re1 Kh8 36. Re7 f4 37. Qh6 f3+ 38. Kh2 Rg8 39. Qxg5 Raf8 40. Rxg7 1-0

[Event "Wch Seniors 65 24th"]
[Site "Katerini"]
[Date "2014.11.04"]
[Round "11"]
[White "Acosta, Mariano"]
[Black "Koryabkin, Valery"]
[Result "1-0"]
[ECO "B28"]
[WhiteElo "1942"]
[BlackElo "2072"]
[PlyCount "76"]
[EventDate "2014.10.24"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GRE"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 a6 3. g3 Nc6 4. Bg2 e6 5. d3 d6 6. 0-0 Be7 7. c3 Nf6 8. Qe2 0-0 9. d4 Re8 10. e5 Nd7 11. h4 d5 12. Nbd2 Nf8 13. Rd1 cxd4 14. cxd4 Bd7 15. Nf1 Rc8 16. Bg5 Nb4 17. Ne3 Qb6 18. Qd2 Rc7 19. a3 Nc6 20. Ng4 Kh8 21. Rac1 Bxg5 22. hxg5 Ng6 23. Bf1 Rec8 24. Kg2 Na5 25. Rxc7 Rxc7 26. b4 Nc4 27. Qa2 Ba4 28. Rb1 Ne7 29. Bd3 Nf5 30. Qa1 Qc6 31. Rh1 Bb5 32. Bxf5 exf5 33. Qb1 Qe6 34. Nf6 h6 35. g4 Nxa3 36. Rxh6+ gxh6 37. Qh1 Bf1+ 38. Kg3 Bc4 1-0

[Event "Wch Seniors 65 24th"]
[Site "Katerini"]
[Date "2014.11.03"]
[Round "10"]
[White "Pitzl, Konstantinos"]
[Black "Acosta, Mariano"]
[Result "1/2-1/2"]
[ECO "A09"]
[WhiteElo "2048"]
[BlackElo "1942"]
[PlyCount "58"]
[EventDate "2014.10.24"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GRE"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. Nf3 d5 2. c4 d4 3. g3 c5 4. Bg2 Nc6 5. d3 e5 6. 0-0 Be7 7. e3 Nf6 8. a3 a5 9. exd4 exd4 10. Bg5 0-0 11. Nbd2 h6 12. Bxf6 Bxf6 13. Rb1 Bf5 14. Ne1 a4 15. Ne4 Be7 16. b3 axb3 17. Qxb3 Na5 18. Qc2 Rb8 19. Nd2 Qc7 20. Nef3 Nc6 21. Rfe1 Rfe8 22. Ne4 Bf8 23. Nfd2 Bd7 24. f4 Ne7 25. Nf1 Bc6 26. Bh3 Nc8 27. Nfd2 b6 28. Nf3 Nd6 29. Ne5 Be7 1/2-1/2

[Event "Wch Seniors 65 24th"]
[Site "Katerini"]
[Date "2014.11.02"]
[Round "9"]
[White "Acosta, Mariano"]
[Black "Davydov, Mihail"]
[Result "1/2-1/2"]
[ECO "D91"]
[WhiteElo "1942"]
[BlackElo "2076"]
[PlyCount "41"]
[EventDate "2014.10.24"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GRE"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Bg5 Ne4 5. Bh4 Nxc3 6. bxc3 c6 7. e3 Bg7 8. Nf3 0-0 9. Qb3 dxc4 10. Bxc4 b5 11. Be2 Be6 12. Qa3 f6 13. 0-0 Nd7 14. Bg3 Nb6 15. Nd2 Bf7 16. Bf3 Qd7 17. Rfd1 Rfd8 18. Ne4 Na4 19. Nc5 Nxc5 20. Qxc5 Rac8 21. a4 1/2-1/2

[Event "Wch Seniors 65 24th"]
[Site "Katerini"]
[Date "2014.11.01"]
[Round "8"]
[White "Reuben, Stewart"]
[Black "Acosta, Mariano"]
[Result "1-0"]
[ECO "A20"]
[WhiteElo "2089"]
[BlackElo "1942"]
[PlyCount "73"]
[EventDate "2014.10.24"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GRE"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. c4 e5 2. g3 h5 3. d3 h4 4. Nf3 hxg3 5. fxg3 Nc6 6. Bg2 Bb4+ 7. Bd2 a5 8. Nc3 Bxc3 9. Bxc3 d6 10. Qd2 f6 11. d4 exd4 12. Nxd4 Ne5 13. b3 a4 14. 0-0 Ne7 15. Rad1 c6 16. Nf3 Nf7 17. Qe3 Bd7 18. b4 Qc7 19. Bd4 Ra6 20. Nh4 Ne5 21. c5 d5 22. Bxe5 Qxe5 23. Rd3 0-0 24. Qd2 Bg4 25. Re3 Qc7 26. Qd4 Bc8 27. a3 Ra8 28. Qf4 Qxf4 29. Rxf4 g5 30. Rf1 Kf7 31. Rxe7+ Kxe7 32. Ng6+ Kf7 33. Nxf8 Bg4 34. Nh7 Kg7 35. Nxf6 Bxe2 36. Rf2 Ba6 37. Bf1 1-0

[Event "Wch Seniors 65 24th"]
[Site "Katerini"]
[Date "2014.10.31"]
[Round "7"]
[White "Acosta, Mariano"]
[Black "Frumson, Yury"]
[Result "0-1"]
[ECO "D02"]
[WhiteElo "1942"]
[BlackElo "2179"]
[PlyCount "78"]
[EventDate "2014.10.24"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GRE"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. c3 c6 4. Bf4 Bf5 5. Nbd2 Nbd7 6. e3 e6 7. Nh4 Be4 8. Qb3 Nh5 9. Bg3 Nxg3 10. hxg3 Qc7 11. 0-0-0 h6 12. Nhf3 Bg6 13. Be2 Be7 14. Nh4 Bh7 15. f4 0-0-0 16. Qa4 Kb8 17. b4 f6 18. Nhf3 e5 19. Ne1 Rhe8 20. Bd3 Bxd3 21. Nxd3 Bf8 22. Rde1 Ka8 23. Kb2 b6 24. Qb3 Qd6 25. Ka1 c5 26. Qa4 Rc8 27. bxc5 bxc5 28. Nb2 Nb6 29. dxe5 fxe5 30. Qc2 e4 31. c4 Qc6 32. Nb3 g6 33. Na5 Qf6 34. Re2 Bg7 35. Rb1 Qe6 36. Rbe1 Rb8 37. cxd5 Nxd5 38. Nac4 Nb4 39. Qa4 Qxc4 0-1

[Event "Wch Seniors 65 24th"]
[Site "Katerini"]
[Date "2014.10.29"]
[Round "6"]
[White "Archangelsky, Mikhail"]
[Black "Acosta, Mariano"]
[Result "1/2-1/2"]
[ECO "D93"]
[WhiteElo "2149"]
[BlackElo "1942"]
[PlyCount "37"]
[EventDate "2014.10.24"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GRE"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. Nc3 d5 5. Bf4 0-0 6. e3 c5 7. dxc5 Qa5 8. Qd2 dxc4 9. Bxc4 Qxc5 10. Bb3 Nc6 11. Rc1 Qa5 12. 0-0 Nh5 13. Bg5 h6 14. Bh4 g5 15. Bg3 Rd8 16. Qe2 Nxg3 17. hxg3 Bf5 18. Rfd1 e6 19. Na4 1/2-1/2

[Event "Wch Seniors 65 24th"]
[Site "Katerini"]
[Date "2014.10.28"]
[Round "5"]
[White "Acosta, Mariano"]
[Black "Kiselev, Alexander"]
[Result "1-0"]
[ECO "A09"]
[WhiteElo "1942"]
[BlackElo "2122"]
[PlyCount "33"]
[EventDate "2014.10.24"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GRE"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. Nf3 d5 2. c4 d4 3. b4 f6 4. e3 e5 5. c5 a5 6. Nxe5 Qd5 7. Qa4+ Nd7 8. Nf3 dxe3 9. fxe3 Qe4 10. d4 b5 11. Bxb5 axb4 12. Qxb4 Kd8 13. Qd2 Nh6 14. Nc3 Qe6 15. 0-0 g6 16. Qd3 Nf7 17. Bc4 1-0

[Event "Wch Seniors 65 24th"]
[Site "Katerini"]
[Date "2014.10.27"]
[Round "4"]
[White "Hmooda, Elhabib"]
[Black "Acosta, Mariano"]
[Result "0-1"]
[ECO "B07"]
[WhiteElo "1718"]
[BlackElo "1942"]
[PlyCount "64"]
[EventDate "2014.10.24"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GRE"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 c6 4. Bd3 e5 5. Nge2 g6 6. 0-0 Bg7 7. f4 Bg4 8. fxe5 dxe5 9. dxe5 Nfd7 10. h3 Bxe2 11. Qxe2 Nxe5 12. Be3 Nbd7 13. Rad1 Qe7 14. Qd2 0-0 15. Rf2 a6 16. Rdf1 Rad8 17. Bh6 Nc5 18. Bxg7 Kxg7 19. Qe2 Ncxd3 20. cxd3 Rxd3 21. Rd1 Rfd8 22. Rxd3 Rxd3 23. Kh1 Qd6 24. a3 b5 25. Qc2 Qd4 26. Re2 a5 27. Re1 Rd2 28. Rd1 Rxc2 29. Rxd4 Rxb2 30. a4 b4 31. Nd1 Ra2 32. Kh2 Nf3+ 0-1

[Event "Wch Seniors 65 24th"]
[Site "Katerini"]
[Date "2014.10.26"]
[Round "3"]
[White "Acosta, Mariano"]
[Black "Serra Olives, Tomas"]
[Result "0-1"]
[ECO "E49"]
[WhiteElo "1942"]
[BlackElo "2156"]
[PlyCount "84"]
[EventDate "2014.10.24"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GRE"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. f3 d5 5. a3 Bxc3+ 6. bxc3 0-0 7. e3 c5 8. cxd5 exd5 9. Bd3 Qa5 10. Bd2 c4 11. Bc2 Re8 12. Ne2 Nbd7 13. 0-0 Nf8 14. Ng3 Bd7 15. e4 dxe4 16. fxe4 Ng6 17. e5 Bg4 18. Qe1 Nd5 19. Qf2 Rf8 20. h3 Be6 21. Nh5 b5 22. Be4 Qd8 23. Qg3 Rb8 24. Bg5 Nxc3 25. Bxd8 Ne2+ 26. Kh2 Nxg3 27. Nxg3 Rfxd8 28. Ne2 a5 29. Rfd1 Ne7 30. Nf4 Nd5 31. Bxd5 Bxd5 32. Kg3 Kf8 33. Kf2 b4 34. axb4 axb4 35. Ke3 b3 36. Ra5 c3 37. Nxd5 c2 38. Rc1 b2 39. Kd2 b1Q 40. Rxc2 Qg1 41. Ne3 Rxd4+ 42. Ke2 Re4 0-1

[Event "Wch Seniors 65 24th"]
[Site "Katerini"]
[Date "2014.10.25"]
[Round "2"]
[White "Gergel, Vladimir P"]
[Black "Acosta, Mariano"]
[Result "1-0"]
[ECO "D23"]
[WhiteElo "2202"]
[BlackElo "1942"]
[PlyCount "75"]
[EventDate "2014.10.24"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GRE"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. g3 b5 5. Bg2 Bb7 6. a4 a6 7. b3 e6 8. axb5 axb5 9. Rxa8 Bxa8 10. bxc4 bxc4 11. Qa4+ Bc6 12. Qxc4 Qd5 13. Qc2 Bb4+ 14. Bd2 Qa5 15. 0-0 0-0 16. Bxb4 Qxb4 17. Nbd2 h6 18. e3 Rc8 19. Rb1 Qf8 20. Rxb8 Rxb8 21. Qxc6 Qd6 22. Qc2 Nd7 23. Ne4 Qb6 24. Nfd2 g6 25. h4 Kg7 26. g4 f5 27. Ng3 c5 28. dxc5 Qxc5 29. Qa4 Qc1+ 30. Ndf1 Qc7 31. gxf5 exf5 32. h5 Nf6 33. hxg6 Kxg6 34. Bh3 f4 35. exf4 Rg8 36. Be6 Rg7 37. Qd4 Kh7 38. Qxf6 1-0

[Event "Wch Seniors 65 24th"]
[Site "Katerini"]
[Date "2014.10.24"]
[Round "1"]
[White "Acosta, Mariano"]
[Black "Malmdin, Nils Ake"]
[Result "1-0"]
[ECO "A00"]
[WhiteElo "1942"]
[BlackElo "2208"]
[PlyCount "65"]
[EventDate "2014.10.24"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GRE"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. b4 e5 2. Bb2 Bxb4 3. Bxe5 Nf6 4. Nf3 Nc6 5. Bb2 d5 6. e3 0-0 7. a3 Ba5 8. c4 Bf5 9. Qb3 Be4 10. Be2 Re8 11. 0-0 dxc4 12. Bxc4 Bxf3 13. Bxf7+ Kh8 14. gxf3 Rf8 15. Bc4 Nd7 16. f4 Nc5 17. Qc2 Qd6 18. Kh1 Ne7 19. Rg1 Qc6+ 20. Rg2 Nf5 21. Nc3 Rad8 22. d4 Bxc3 23. Bxc3 Ne4 24. d5 Qe8 25. Be5 Ned6 26. e4 Nxc4 27. Qxc4 Rf7 28. exf5 Qd7 29. Rag1 Rg8 30. Qd4 a6 31. Rg5 h6 32. Rg6 Kh7 33. Qe4 1-0

[Event "London Classic op 5th"]
[Site "London"]
[Date "2013.12.11"]
[Round "5"]
[White "Gupta, Arul"]
[Black "Acosta, Mariano"]
[Result "1-0"]
[ECO "C50"]
[WhiteElo "1840"]
[BlackElo "1991"]
[PlyCount "49"]
[EventDate "2013.12.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ENG"]
[SourceTitle "CBM 157 Extra"]
[Source "ChessBase"]
[SourceDate "2013.12.19"]
[SourceVersion "1"]
[SourceVersionDate "2013.12.19"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. d3 Nf6 5. Nc3 a6 6. Bg5 h6 7. Bxf6 Qxf6 8. Nd5 Qd8 9. c3 d6 10. d4 Ba7 11. dxe5 dxe5 12. Qc2 Be6 13. 0-0-0 Qc8 14. Bb3 Bg4 15. h3 Bxf3 16. gxf3 Bc5 17. Rhg1 Bf8 18. f4 exf4 19. e5 Na5 20. e6 Nxb3+ 21. axb3 g5 22. Qf5 Qxe6 23. Nxc7+ Ke7 24. Nxe6 fxe6 25. Rge1 1-0

[Event "London Classic op 5th"]
[Site "London"]
[Date "2013.12.10"]
[Round "4"]
[White "Acosta, Mariano"]
[Black "Josse, Mark"]
[Result "0-1"]
[ECO "A11"]
[WhiteElo "1991"]
[BlackElo "2173"]
[PlyCount "67"]
[EventDate "2013.12.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ENG"]
[SourceTitle "CBM 157 Extra"]
[Source "ChessBase"]
[SourceDate "2013.12.19"]
[SourceVersion "1"]
[SourceVersionDate "2013.12.19"]
[SourceQuality "1"]

1. Nf3 d5 2. g3 Bg4 3. Bg2 Nd7 4. c4 e6 5. 0-0 Ngf6 6. cxd5 exd5 7. d4 c6 8. Nc3 Be7 9. h3 Bh5 10. Ne5 Nxe5 11. dxe5 Nd7 12. f4 f5 13. g4 Bg6 14. gxf5 Bxf5 15. e4 dxe4 16. Bxe4 0-0 17. Qb3+ Kh8 18. Bxf5 Rxf5 19. Qxb7 Nxe5 20. Be3 Nc4 21. Rad1 Qe8 22. Bd4 Rb8 23. Qxb8 Qxb8 24. b3 Nb6 25. Be5 Qf8 26. Kh2 h6 27. Rg1 Bf6 28. Bd6 Qf7 29. Ne4 Rd5 30. Rde1 Bh4 31. Ref1 Qf5 32. Be5 Rxe5 33. fxe5 Qxe4 34. Rg2 0-1

[Event "London Classic op 5th"]
[Site "London"]
[Date "2013.12.09"]
[Round "3"]
[White "Bao, Qilin"]
[Black "Acosta, Mariano"]
[Result "1-0"]
[ECO "C26"]
[WhiteElo "2166"]
[BlackElo "1991"]
[PlyCount "75"]
[EventDate "2013.12.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ENG"]
[SourceTitle "CBM 157 Extra"]
[Source "ChessBase"]
[SourceDate "2013.12.19"]
[SourceVersion "1"]
[SourceVersionDate "2013.12.19"]
[SourceQuality "1"]

1. e4 e5 2. Nc3 Nf6 3. g3 Bc5 4. Bg2 d6 5. Nge2 Nc6 6. Na4 Bb6 7. 0-0 h5 8. Nxb6 axb6 9. h3 h4 10. g4 g5 11. d4 Nh7 12. c4 f6 13. Be3 Nf8 14. d5 Nb8 15. b4 Na6 16. Qb3 Ng6 17. Rfc1 Nf4 18. Bf1 Bd7 19. f3 c5 20. dxc6 bxc6 21. Rd1 Qc7 22. Nc3 Be6 23. Qb2 0-0 24. a3 Ng6 25. Qf2 Rfb8 26. Na4 c5 27. b5 Qd7 28. bxa6 Qxa4 29. Rxd6 Kf7 30. Rb1 Qxa3 31. Rbxb6 Rxb6 32. Rxb6 Rxa6 33. Rb7+ Kg8 34. Bxc5 Qa1 35. Qb2 Bxc4 36. Rb8+ Kg7 37. Qb7+ Kh6 38. Rh8+ 1-0

[Event "London Classic op 5th"]
[Site "London"]
[Date "2013.12.08"]
[Round "2"]
[White "Acosta, Mariano"]
[Black "Haddock, Paul"]
[Result "1-0"]
[ECO "D03"]
[WhiteElo "1991"]
[BlackElo "1668"]
[PlyCount "137"]
[EventDate "2013.12.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ENG"]
[SourceTitle "CBM 157 Extra"]
[Source "ChessBase"]
[SourceDate "2013.12.19"]
[SourceVersion "1"]
[SourceVersionDate "2013.12.19"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. Bg5 Bg7 4. Nbd2 d5 5. e3 0-0 6. Bd3 b6 7. Ne5 Bb7 8. Qf3 Nbd7 9. Ng4 Ne4 10. Nxe4 dxe4 11. Bxe4 Bxe4 12. Qxe4 Nf6 13. Nxf6+ exf6 14. Bh4 Re8 15. Qd3 Qd7 16. c3 f5 17. 0-0 Re4 18. Bg3 Rae8 19. Rad1 Qc6 20. Bf4 h6 21. f3 R4e7 22. Rde1 g5 23. Bg3 Qf6 24. e4 f4 25. Bf2 h5 26. g3 fxg3 27. Bxg3 Qg6 28. Qd1 h4 29. Bf2 g4 30. Bxh4 gxf3+ 31. Bg3 Rxe4 32. Rxe4 Rxe4 33. Qxf3 Rg4 34. Kg2 Bh6 35. Qf5 Qxf5 36. Rxf5 c6 37. Kf3 Rg6 38. Bf4 Bxf4 39. Kxf4 Rh6 40. Kg3 Rg6+ 41. Kh4 Kf8 42. Rg5 Rf6 43. Kg3 Rf1 44. Re5 Rb1 45. Re2 Rg1+ 46. Kf2 Rg5 47. Kf3 Rf5+ 48. Kg3 Rg5+ 49. Kf3 a6 50. h4 Rf5+ 51. Kg3 Kg7 52. Re7 Rf1 53. Rb7 b5 54. Rb6 Rg1+ 55. Kf4 Rg2 56. b3 Rxa2 57. Rxc6 a5 58. Rc5 Rc2 59. Ke3 a4 60. Kd3 axb3 61. Rxb5 Rh2 62. Rxb3 Rxh4 63. d5 Kf8 64. Rb4 Rxb4 65. cxb4 Ke7 66. b5 Kd6 67. b6 Kd7 68. Ke4 Kc8 69. d6 1-0

[Event "London Classic op 5th"]
[Site "London"]
[Date "2013.12.07"]
[Round "1"]
[White "Sarkar, Justin"]
[Black "Acosta, Mariano"]
[Result "1-0"]
[ECO "E60"]
[WhiteElo "2425"]
[BlackElo "1991"]
[PlyCount "85"]
[EventDate "2013.12.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ENG"]
[SourceTitle "CBM 157 Extra"]
[Source "ChessBase"]
[SourceDate "2013.12.19"]
[SourceVersion "1"]
[SourceVersionDate "2013.12.19"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. f3 Nc6 4. d5 Ne5 5. e4 d6 6. Nc3 Bg7 7. f4 Neg4 8. h3 Nh6 9. g4 e5 10. f5 gxf5 11. exf5 Nd7 12. Nf3 Nc5 13. f6 Bxf6 14. Bxh6 e4 15. Nd4 Bh4+ 16. Kd2 Bf2 17. Nc2 Qf6 18. Be3 Bxe3+ 19. Nxe3 h5 20. Bg2 hxg4 21. hxg4 Rg8 22. Kc2 Bd7 23. Qe2 0-0-0 24. Raf1 Qg6 25. Qf2 Kb8 26. Qxf7 Bxg4 27. Qxg6 Rxg6 28. b4 Nd3 29. Bxe4 Nxb4+ 30. Kb3 Rg7 31. Kxb4 a5+ 32. Kxa5 Bd7 33. Rh7 b6+ 34. Kb4 Rg3 35. Rf3 Rg1 36. Rff7 Bc8 37. Ne2 Re1 38. Nd4 c5+ 39. dxc6 Re8 40. Rb7+ Ka8 41. Nb5 Bxb7 42. Rxb7 Rc8 43. Ra7+ 1-0

[Event "Plzen op 5th"]
[Site "Plzen"]
[Date "2013.11.29"]
[Round "6"]
[White "Acosta, Mariano"]
[Black "Timr, Jan"]
[Result "1-0"]
[ECO "A09"]
[WhiteElo "1978"]
[PlyCount "81"]
[EventDate "2013.11.24"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "CZE"]
[SourceTitle "CBM 157 Extra"]
[Source "ChessBase"]
[SourceDate "2013.12.19"]
[SourceVersion "1"]
[SourceVersionDate "2013.12.19"]
[SourceQuality "1"]

1. Nf3 d5 2. c4 d4 3. b4 Bg4 4. Qb3 Nd7 5. Nxd4 e5 6. Nc2 Ngf6 7. Bb2 c5 8. b5 a6 9. Nc3 Nb6 10. d3 Be7 11. g3 0-0 12. Bg2 Rb8 13. Ne3 Be6 14. 0-0 h6 15. a4 a5 16. Ncd5 Bd6 17. Bc3 Nbxd5 18. cxd5 Bg4 19. f3 Bh5 20. Nc4 b6 21. Nxe5 Bxe5 22. Bxe5 Rb7 23. e4 Nh7 24. Qb2 f6 25. Bc3 Rc7 26. Rac1 Qe7 27. f4 Re8 28. Rfe1 Bf7 29. e5 fxe5 30. fxe5 Qd8 31. d6 Rc8 32. d4 cxd4 33. Bxd4 Rxc1 34. Rxc1 Ng5 35. Rc6 Be6 36. Bxb6 Qb8 37. h4 Nf7 38. Bd4 g5 39. Qf2 Bd7 40. Rc7 Qd8 41. Bd5 1-0

[Event "Plzen op 5th"]
[Site "Plzen"]
[Date "2013.11.28"]
[Round "5"]
[White "Pospisil, Petr"]
[Black "Acosta, Mariano"]
[Result "1/2-1/2"]
[ECO "D93"]
[WhiteElo "1711"]
[BlackElo "1978"]
[PlyCount "52"]
[EventDate "2013.11.24"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "CZE"]
[SourceTitle "CBM 157 Extra"]
[Source "ChessBase"]
[SourceDate "2013.12.19"]
[SourceVersion "1"]
[SourceVersionDate "2013.12.19"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. Nc3 d5 5. Bf4 0-0 6. e3 c5 7. Be2 Nc6 8. 0-0 Nh5 9. Nxd5 Nxf4 10. Nxf4 cxd4 11. exd4 Nxd4 12. Nxd4 Bxd4 13. Qc2 Bf5 14. Bd3 Bxd3 15. Nxd3 Rc8 16. Rac1 e6 17. b3 Qa5 18. Qe2 Rfd8 19. Ne1 b5 20. Nf3 bxc4 21. Rxc4 Rxc4 22. bxc4 Bc5 23. Qc2 Qb6 24. Ne5 Bd4 25. Nf3 Rd7 26. Nxd4 Qxd4 1/2-1/2

[Event "Plzen op 5th"]
[Site "Plzen"]
[Date "2013.11.27"]
[Round "4"]
[White "Acosta, Mariano"]
[Black "Ernst, Michael"]
[Result "0-1"]
[ECO "C00"]
[WhiteElo "1978"]
[BlackElo "2164"]
[PlyCount "76"]
[EventDate "2013.11.24"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "CZE"]
[SourceTitle "CBM 157 Extra"]
[Source "ChessBase"]
[SourceDate "2013.12.19"]
[SourceVersion "1"]
[SourceVersionDate "2013.12.19"]
[SourceQuality "1"]

1. e4 e6 2. d3 d5 3. Nd2 Nf6 4. Ngf3 b6 5. c3 Be7 6. e5 Nfd7 7. d4 c5 8. Bb5 0-0 9. 0-0 Qc7 10. Re1 Nc6 11. a3 f6 12. exf6 Bxf6 13. Nf1 Ndb8 14. Ne3 Bd7 15. Ng4 Nxd4 16. Bd3 Nxf3+ 17. Qxf3 Nc6 18. Qh3 g6 19. Nh6+ Kg7 20. Ng4 e5 21. Bh6+ Kh8 22. Bxf8 Rxf8 23. Qg3 Bg7 24. h3 c4 25. Bf1 b5 26. a4 b4 27. Rad1 bxc3 28. bxc3 Be6 29. Ne3 Qa5 30. h4 Qc5 31. Rb1 a6 32. h5 d4 33. hxg6 dxe3 34. Rxe3 Bf5 35. Rb7 Bxg6 36. Re4 Na5 37. Rh4 Nxb7 38. Qxg6 Qxf2+ 0-1

[Event "Plzen op 5th"]
[Site "Plzen"]
[Date "2013.11.26"]
[Round "3"]
[White "Kroezen, Roland"]
[Black "Acosta, Mariano"]
[Result "0-1"]
[ECO "C44"]
[WhiteElo "1704"]
[BlackElo "1978"]
[PlyCount "48"]
[EventDate "2013.11.24"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "CZE"]
[SourceTitle "CBM 157 Extra"]
[Source "ChessBase"]
[SourceDate "2013.12.19"]
[SourceVersion "1"]
[SourceVersionDate "2013.12.19"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. g3 Nf6 4. d3 Bc5 5. Bg5 h6 6. Bxf6 Qxf6 7. Bg2 Ne7 8. 0-0 d6 9. Nbd2 Ng6 10. c3 h5 11. b4 Bb6 12. Nc4 h4 13. Nxb6 axb6 14. d4 Bg4 15. Qd3 0-0 16. dxe5 dxe5 17. Qe3 Rfd8 18. a4 Rd6 19. h3 Bxf3 20. Bxf3 Qd8 21. Rfd1 Rxa4 22. Rxa4 Rxd1+ 23. Kg2 Rd2 24. Bg4 hxg3 0-1

[Event "Plzen op 5th"]
[Site "Plzen"]
[Date "2013.11.25"]
[Round "2"]
[White "Acosta, Mariano"]
[Black "Neuschmied, Siegfried"]
[Result "0-1"]
[ECO "A48"]
[WhiteElo "1978"]
[BlackElo "2227"]
[PlyCount "72"]
[EventDate "2013.11.24"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "CZE"]
[SourceTitle "CBM 157 Extra"]
[Source "ChessBase"]
[SourceDate "2013.12.19"]
[SourceVersion "1"]
[SourceVersionDate "2013.12.19"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. Bg5 Bg7 4. Nbd2 c5 5. c3 b6 6. e4 Bb7 7. Bd3 0-0 8. Qe2 h6 9. Bxf6 Bxf6 10. h4 cxd4 11. cxd4 h5 12. e5 Bg7 13. Rg1 Nc6 14. g4 hxg4 15. Rxg4 Nb4 16. h5 gxh5 17. Rh4 f5 18. Rxh5 Rc8 19. Ng5 Qe8 20. Rh4 Qg6 21. f4 Nc2+ 22. Bxc2 Rxc2 23. Qd3 Rfc8 24. Kf2 Rxb2 25. Rb1 Be4 26. Ngxe4 fxe4 27. Qe2 Rxd2 28. Qxd2 e3+ 29. Kxe3 Qxb1 30. Rh2 Qg1+ 31. Rf2 e6 32. d5 Qc1 33. dxe6 dxe6 34. Qxc1 Rxc1 35. Rd2 Rc3+ 36. Ke2 Bf8 0-1

[Event "Plzen op 5th"]
[Site "Plzen"]
[Date "2013.11.24"]
[Round "1"]
[White "Fakan, Petr"]
[Black "Acosta, Mariano"]
[Result "0-1"]
[ECO "D01"]
[WhiteElo "1483"]
[BlackElo "1978"]
[PlyCount "37"]
[EventDate "2013.11.24"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "CZE"]
[SourceTitle "CBM 157 Extra"]
[Source "ChessBase"]
[SourceDate "2013.12.19"]
[SourceVersion "1"]
[SourceVersionDate "2013.12.19"]
[SourceQuality "1"]

1. d4 d5 2. Nc3 Nf6 3. Bg5 h6 4. Bh4 c6 5. f3 Qb6 6. Qd2 Qxb2 7. Rd1 Nbd7 8. e4 e6 9. e5 Bb4 10. Rb1 Qxb1+ 11. Nxb1 Bxd2+ 12. Nxd2 Ng8 13. f4 Ne7 14. Bxe7 Kxe7 15. Bd3 b6 16. Ngf3 Bb7 17. 0-0 g6 18. Nh4 Rhg8 19. h3 0-1

[Event "Wch Seniors 23rd"]
[Site "Opatija"]
[Date "2013.11.23"]
[Round "11"]
[White "Pressl, Harald"]
[Black "Acosta, Mariano"]
[Result "1-0"]
[ECO "A07"]
[WhiteElo "1802"]
[BlackElo "1978"]
[PlyCount "55"]
[EventDate "2013.11.12"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "CRO"]
[SourceTitle "CBM 157 Extra"]
[Source "ChessBase"]
[SourceDate "2013.12.19"]
[SourceVersion "1"]
[SourceVersionDate "2013.12.19"]
[SourceQuality "1"]

1. Nf3 d5 2. g3 c6 3. Bg2 Bg4 4. h3 Bh5 5. d3 Nd7 6. 0-0 e5 7. e4 dxe4 8. dxe4 Bc5 9. Nbd2 Ngf6 10. Qe2 Qc7 11. Nc4 0-0-0 12. a3 h6 13. b4 Bd4 14. Bb2 Bxb2 15. Nxb2 g5 16. Qe3 Kb8 17. Nh2 Bg6 18. a4 Ne8 19. c4 f6 20. c5 h5 21. Rfd1 Bf7 22. Rd3 h4 23. g4 Ng7 24. Rad1 Ne6 25. Qd2 Nd4 26. Nf3 Nxf3+ 27. Bxf3 Rhe8 28. Rxd7 1-0

[Event "Wch Seniors 23rd"]
[Site "Opatija"]
[Date "2013.11.22"]
[Round "10"]
[White "Acosta, Mariano"]
[Black "Peierl, Walter"]
[Result "1/2-1/2"]
[ECO "D03"]
[WhiteElo "1978"]
[BlackElo "1834"]
[PlyCount "51"]
[EventDate "2013.11.12"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "CRO"]
[SourceTitle "CBM 157 Extra"]
[Source "ChessBase"]
[SourceDate "2013.12.19"]
[SourceVersion "1"]
[SourceVersionDate "2013.12.19"]
[SourceQuality "1"]

1. d4 g6 2. c3 d5 3. Nf3 Bg7 4. Bg5 Nf6 5. Nbd2 Nc6 6. e3 Ne4 7. Nxe4 dxe4 8. Nd2 f5 9. a4 b6 10. Bh4 0-0 11. Bc4+ Kh8 12. f4 Qd6 13. 0-0 e6 14. Bb5 a6 15. Be2 Bf6 16. Bxf6+ Rxf6 17. Nc4 Qe7 18. b4 Qg7 19. Kf2 Ne7 20. Ne5 Nd5 21. Qd2 Qe7 22. Bc4 c6 23. Bxd5 exd5 24. h4 b5 25. a5 Be6 26. g3 1/2-1/2

[Event "Wch Seniors 23rd"]
[Site "Opatija"]
[Date "2013.11.21"]
[Round "9"]
[White "Gromark, Per Olof"]
[Black "Acosta, Mariano"]
[Result "1-0"]
[ECO "E94"]
[WhiteElo "2102"]
[BlackElo "1978"]
[PlyCount "129"]
[EventDate "2013.11.12"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "CRO"]
[SourceTitle "CBM 157 Extra"]
[Source "ChessBase"]
[SourceDate "2013.12.19"]
[SourceVersion "1"]
[SourceVersionDate "2013.12.19"]
[SourceQuality "1"]

1. Nf3 g6 2. c4 Bg7 3. Nc3 Nf6 4. e4 d6 5. d4 0-0 6. Be2 Nbd7 7. 0-0 e5 8. Be3 Re8 9. d5 Nc5 10. Nd2 a5 11. b3 Nfd7 12. Qc2 Rf8 13. Bg4 Nf6 14. Bxc8 Qxc8 15. f3 Nh5 16. a3 f5 17. b4 axb4 18. axb4 Rxa1 19. Rxa1 Na6 20. Rb1 f4 21. Bf2 g5 22. c5 g4 23. Ne2 Bh6 24. b5 Nb8 25. cxd6 g3 26. hxg3 fxg3 27. Nxg3 cxd6 28. Rc1 Qxc2 29. Rxc2 Nxg3 30. Bxg3 Nd7 31. Rc7 Be3+ 32. Bf2 Bxf2+ 33. Kxf2 Nc5 34. Ke3 Rf7 35. Rc8+ Rf8 36. Rc7 Rf7 37. Rxf7 Kxf7 38. Nc4 Ke7 39. Kf2 Nd3+ 40. Kg3 Nf4 41. Kh2 h5 42. g3 Ne2 43. b6 Kd7 44. Nd2 Ke7 45. Kh3 Ke8 46. Kh4 Ke7 47. g4 hxg4 48. fxg4 Kf7 49. Kg5 Nc3 50. Kf5 Ne2 51. g5 Nd4+ 52. Kg4 Ke7 53. Nc4 Nb5 54. Kf5 Nd4+ 55. Kg6 Ne2 56. Kh7 Nc3 57. Nd2 Na4 58. g6 Nxb6 59. g7 Nd7 60. g8Q Nf6+ 61. Kg7 Nxg8 62. Kxg8 Kf6 63. Kf8 b5 64. Ke8 Kg5 65. Kd7 1-0

[Event "Wch Seniors 23rd"]
[Site "Opatija"]
[Date "2013.11.20"]
[Round "8"]
[White "Acosta, Mariano"]
[Black "Zhelesny, Stanislav"]
[Result "1/2-1/2"]
[ECO "D03"]
[WhiteElo "1978"]
[BlackElo "2109"]
[PlyCount "87"]
[EventDate "2013.11.12"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "CRO"]
[SourceTitle "CBM 157 Extra"]
[Source "ChessBase"]
[SourceDate "2013.12.19"]
[SourceVersion "1"]
[SourceVersionDate "2013.12.19"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. Bg5 d5 4. Nbd2 Bg7 5. e3 0-0 6. Bd3 Nbd7 7. c3 c5 8. 0-0 b6 9. a4 a6 10. b4 c4 11. Bc2 Bb7 12. Ne5 Ne8 13. f4 f6 14. Nxd7 Qxd7 15. Bh4 Nd6 16. g4 f5 17. gxf5 Nxf5 18. Bf2 Nd6 19. Nf3 Ne4 20. Bxe4 dxe4 21. Nd2 Bd5 22. Kh1 Bh6 23. Bg3 Rf7 24. Qe2 Qe6 25. Rf2 Raf8 26. a5 b5 27. Raf1 Qh3 28. Kg1 Bg7 29. Rg2 Rf5 30. Be1 Rh5 31. Rg3 Qe6 32. Rf2 Kh8 33. Rgg2 Qc6 34. Rg5 Rxg5+ 35. fxg5 Rxf2 36. Qxf2 e5 37. Nf1 Qe6 38. Qg3 Qf5 39. Bf2 Qf3 40. Qxf3 exf3 41. Bg3 exd4 42. exd4 Kg8 43. Kf2 Kf7 44. Ke3 1/2-1/2

[Event "Wch Seniors 23rd"]
[Site "Opatija"]
[Date "2013.11.19"]
[Round "7"]
[White "McLaren, Brian"]
[Black "Acosta, Mariano"]
[Result "1-0"]
[ECO "A00"]
[WhiteElo "2158"]
[BlackElo "1978"]
[PlyCount "141"]
[EventDate "2013.11.12"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "CRO"]
[SourceTitle "CBM 157 Extra"]
[Source "ChessBase"]
[SourceDate "2013.12.19"]
[SourceVersion "1"]
[SourceVersionDate "2013.12.19"]
[SourceQuality "1"]

1. g3 e5 2. Nf3 e4 3. Nd4 d5 4. d3 f5 5. Bg2 h5 6. h4 Be7 7. dxe4 dxe4 8. Nc3 Bf6 9. Be3 Ne7 10. Ndb5 Bd7 11. Qd2 a6 12. Nd4 Nbc6 13. 0-0-0 Ne5 14. Bg5 0-0 15. Bxf6 Rxf6 16. f3 Nc4 17. Qg5 Rg6 18. Qf4 Nd6 19. Rhf1 e3 20. Rg1 b5 21. Qxe3 Rxg3 22. Qf4 Rg6 23. Bh3 Qe8 24. e4 b4 25. Nd5 Nxd5 26. exd5 Qf7 27. Rxg6 Qxg6 28. Nb3 Kh7 29. Nc5 Rd8 30. Nxa6 Ne4 31. fxe4 Qxa6 32. Bxf5+ Bxf5 33. Qxf5+ Kg8 34. Qg5 Rf8 35. Rg1 Rf1+ 36. Rxf1 Qxf1+ 37. Kd2 Qf2+ 38. Kd3 Qf3+ 39. Kd4 Qd1+ 40. Ke5 Qxc2 41. Qe7 Qxb2+ 42. Ke6 Kh7 43. e5 Qxa2 44. Qxb4 c6 45. Qe4+ Kg8 46. Kd6 Qa3+ 47. Kxc6 Qa6+ 48. Kc5 Qa5+ 49. Kd4 Qd2+ 50. Kc4 Qc1+ 51. Kb5 Qb2+ 52. Kc6 Qb8 53. e6 Qc8+ 54. Kd6 Qb8+ 55. Kc5 Qa7+ 56. Kb5 Qb8+ 57. Kc4 Qc7+ 58. Kd3 Qg3+ 59. Kd4 Qf2+ 60. Kc4 Qa2+ 61. Kb4 Qb2+ 62. Kc5 Qc3+ 63. Qc4 Qa5+ 64. Qb5 Qc3+ 65. Kb6 Qd4+ 66. Qc5 Qxh4 67. e7 Qf6+ 68. d6 Qb2+ 69. Kc7 Qe2 70. Kd8 Kf7 71. Qxh5+ 1-0

[Event "Wch Seniors 23rd"]
[Site "Opatija"]
[Date "2013.11.18"]
[Round "6"]
[White "Acosta, Mariano"]
[Black "Fucak, Emilijo"]
[Result "0-1"]
[ECO "B30"]
[WhiteElo "1978"]
[BlackElo "2223"]
[PlyCount "112"]
[EventDate "2013.11.12"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "CRO"]
[SourceTitle "CBM 157 Extra"]
[Source "ChessBase"]
[SourceDate "2013.12.19"]
[SourceVersion "1"]
[SourceVersionDate "2013.12.19"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. g3 Nf6 4. d3 d5 5. Qe2 dxe4 6. dxe4 Bg4 7. Qe3 e5 8. Bb5 Qb6 9. Nc3 Bd6 10. h3 Bxf3 11. Qxf3 0-0 12. Bxc6 Qxc6 13. Bg5 Nd7 14. Rd1 Rae8 15. 0-0 h6 16. Bc1 c4 17. Nd5 Nb6 18. Bxh6 f5 19. Be3 Bc5 20. Bxc5 Qxc5 21. Nc3 Qb4 22. Rb1 f4 23. g4 Re6 24. a3 Qc5 25. Rbd1 Rh6 26. Rd2 Rh4 27. Rfd1 Rf6 28. Rd8+ Kh7 29. Kg2 Rfh6 30. R1d2 Qe7 31. Rb8 Qg5 32. Rdd8 Rxh3 33. Qxh3 Rxh3 34. Rh8+ Kg6 35. Kxh3 f3 36. Rbf8 Qc1 37. Kg3 Qxb2 38. Rxf3 Qxc2 39. Rb8 Qc1 40. Kg2 Nd7 41. Rxb7 Nc5 42. Rc7 Nd3 43. Rff7 Qxc3 44. Rxg7+ Kh6 45. Rh7+ Kg5 46. Rcf7 Nf4+ 47. Kh2 Qc2 48. Rfg7+ Ng6 49. Rf7 Kxg4 50. Rfg7 Kg5 51. Rd7 Qxf2+ 52. Kh1 c3 53. Rd6 Qf3+ 54. Kg1 Qxe4 55. Kf2 c2 56. Rc7 Qf4+ 0-1

[Event "Wch Seniors 23rd"]
[Site "Opatija"]
[Date "2013.11.16"]
[Round "5"]
[White "Weisenburger, Horst"]
[Black "Acosta, Mariano"]
[Result "0-1"]
[ECO "C44"]
[WhiteElo "2141"]
[BlackElo "1978"]
[PlyCount "63"]
[EventDate "2013.11.12"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "CRO"]
[SourceTitle "CBM 157 Extra"]
[Source "ChessBase"]
[SourceDate "2013.12.19"]
[SourceVersion "1"]
[SourceVersionDate "2013.12.19"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. c3 dxc3 5. Nxc3 Bb4 6. Bc4 Bxc3+ 7. bxc3 d6 8. Qb3 Qe7 9. 0-0 Nf6 10. e5 Nxe5 11. Nxe5 dxe5 12. Re1 0-0 13. Bf4 Nd7 14. Rad1 Qf6 15. Bg3 c6 16. a4 h6 17. Qa3 Re8 18. Rd6 Qe7 19. Ba2 Kh8 20. Bb1 c5 21. Rd5 f6 22. Bg6 Rd8 23. Red1 Rg8 24. Qc1 Nf8 25. Be4 Be6 26. Rd6 Re8 27. R1d3 b6 28. Qd1 c4 29. Rf3 Bg4 30. Rfxf6 Bxd1 31. Rxh6+ gxh6 32. Rxh6+ 0-1

