[Event "Gualeguaychu Benvenaste Memorial"]
[Site "Gualeguaychu"]
[Date "2018.11.11"]
[Round "4.3"]
[White "Avendano, Gaston"]
[Black "Sack, Marcos"]
[Result "1-0"]
[ECO "A47"]
[WhiteElo "1907"]
[BlackElo "1238"]
[PlyCount "87"]
[EventDate "2018.11.10"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "ARG"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 e6 3. e3 Be7 4. Bd3 b6 5. 0-0 Bb7 6. Nbd2 d6 7. e4 0-0 8. Re1 Nbd7 9. Nf1 c5 10. c3 Qc7 11. Ng3 Rfd8 12. Qe2 Nf8 13. h4 Rac8 14. Bd2 c4 15. Bc2 e5 16. Nf5 Ne6 17. Rad1 Bf8 18. d5 Nf4 19. Bxf4 exf4 20. Qd2 Nd7 21. Qxf4 f6 22. N3d4 Ne5 23. Ne6 Qf7 24. Nxd8 Rxd8 25. Rd2 Qh5 26. Bd1 Qf7 27. Re3 Nd3 28. Rg3 Kh8 29. Qe3 Bc8 30. Nd4 f5 31. exf5 Bxf5 32. Qg5 Re8 33. Qxf5 Re1+ 34. Kh2 Qe7 35. Qg5 Qf7 36. Rf3 Qe8 37. Ne6 Rxe6 38. dxe6 Ne5 39. Rf5 Be7 40. Qf4 Nd3 41. Qxc4 Ne5 42. Rxe5 dxe5 43. g3 Bc5 44. Qd5 1-0

[Event "Gualeguaychu Benvenaste Memorial"]
[Site "Gualeguaychu"]
[Date "2018.11.11"]
[Round "5.6"]
[White "Sack, Marcos"]
[Black "Rivero, Ariel"]
[Result "0-1"]
[ECO "C41"]
[WhiteElo "1238"]
[BlackElo "1783"]
[PlyCount "34"]
[EventDate "2018.11.10"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "ARG"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nd7 3. Nf3 e5 4. Bc4 c6 5. dxe5 dxe5 6. Ng5 Nh6 7. 0-0 Be7 8. Nf3 Ng4 9. Bd2 0-0 10. Bc3 Qc7 11. Nbd2 b5 12. Bb3 b4 13. h3 bxc3 14. hxg4 cxd2 15. Qxd2 Nc5 16. Rae1 Nxb3 17. cxb3 Ba6 0-1

[Event "Gualeguaychu Benvenaste Memorial"]
[Site "Gualeguaychu"]
[Date "2018.11.10"]
[Round "2.8"]
[White "Butteri Stube, Gaston"]
[Black "Sack, Marcos"]
[Result "0-1"]
[ECO "B54"]
[BlackElo "1238"]
[PlyCount "108"]
[EventDate "2018.11.10"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "ARG"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nc6 5. Nxc6 bxc6 6. Nc3 g6 7. Be3 Nf6 8. Qd2 Bg7 9. f3 Qa5 10. Bh6 0-0 11. Bxg7 Kxg7 12. Bc4 Rb8 13. Bb3 Ba6 14. g4 c5 15. Rb1 Nd7 16. Nd5 Qxd2+ 17. Kxd2 Bb5 18. c4 Ba6 19. Nxe7 Ne5 20. Kc3 Nxf3 21. Nc6 Rb7 22. Na5 Re7 23. Rbd1 Rxe4 24. Rxd6 Re3+ 25. Rd3 Rxd3+ 26. Kxd3 Ne5+ 27. Kc3 Nxg4 28. Ba4 Ne5 29. Rd1 f5 30. Rd5 f4 31. Rxe5 f3 32. Nb3 f2 33. Nd2 Rf3+ 34. Kc2 Bxc4 35. Nxf3 f1Q 36. b3 Bd3+ 37. Kd2 Qxf3 38. Re3 Qf2+ 39. Kxd3 Qxh2 40. Re7+ Kh6 41. Rxa7 Qxa2 42. Ra5 Qf2 43. Kc4 Qd4+ 44. Kb5 g5 45. Kc6 g4 46. Rxc5 g3 47. Rd5 Qe4 48. Kc5 g2 49. Rd6+ Kg5 50. Bc6 Qe3+ 51. Kb4 g1Q 52. Rd5+ Kf6 53. Ba4 Qb6+ 54. Rb5 Qgc5# 0-1

[Event "Gualeguaychu Benvenaste Memorial"]
[Site "Gualeguaychu"]
[Date "2018.11.10"]
[Round "1.4"]
[White "Sack, Marcos"]
[Black "Ledesma, Israel"]
[Result "0-1"]
[ECO "B23"]
[WhiteElo "1238"]
[BlackElo "1872"]
[PlyCount "42"]
[EventDate "2018.11.10"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "ARG"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 e6 3. Bc4 a6 4. a4 Nc6 5. f4 Nge7 6. Nf3 d5 7. Ba2 Nb4 8. Ne2 Nxa2 9. Rxa2 dxe4 10. Ng5 f5 11. 0-0 h6 12. Nh3 Nd5 13. d3 exd3 14. Qxd3 Nb4 15. Qg3 Nxa2 16. Qg6+ Ke7 17. Ng3 Qd4+ 18. Kh1 Qf6 19. Qh5 g6 20. Qf3 Nxc1 21. Qa3 Kf7 0-1

[Event "Concepcion del Uruguay U2200"]
[Site "Concepcion del Uruguay"]
[Date "2018.08.19"]
[Round "4.9"]
[White "Gutierrez, Miguel2222"]
[Black "Sack, Marcos"]
[Result "1-0"]
[ECO "C47"]
[PlyCount "55"]
[EventDate "2018.08.18"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "ARG"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Bc5 4. Be2 Nf6 5. d3 a6 6. Bg5 Bxf2+ 7. Kxf2 Nd4 8. Ke1 Nxf3+ 9. Bxf3 h6 10. Bh4 g5 11. Bg3 d6 12. Nd5 Nxd5 13. exd5 f5 14. h3 0-0 15. Bf2 e4 16. dxe4 fxe4 17. Bg4 Qf6 18. Qd4 Qf4 19. g3 Qf7 20. c4 Bxg4 21. hxg4 Qg6 22. Kd2 Rf3 23. Be3 Rxg3 24. Raf1 Rxg4 25. Rf6 Qe8 26. Rhxh6 Rg2+ 27. Rf2 Rxf2+ 28. Bxf2 1-0

[Event "Concepcion del Uruguay U2200"]
[Site "Concepcion del Uruguay"]
[Date "2018.08.19"]
[Round "5.11"]
[White "Sack, Marcos"]
[Black "Pereira Nunez, Fabian"]
[Result "1/2-1/2"]
[ECO "C01"]
[PlyCount "92"]
[EventDate "2018.08.18"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "ARG"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 e6 2. e4 d5 3. exd5 exd5 4. Nf3 Bg4 5. Be2 Nc6 6. h3 Bf5 7. 0-0 Nf6 8. Re1 Be7 9. c4 0-0 10. Nc3 Bb4 11. a3 Bxc3 12. bxc3 Na5 13. cxd5 Qxd5 14. Nh4 Be4 15. Bf3 Bxf3 16. Qxf3 Rfe8 17. Bf4 Qxf3 18. Nxf3 Nd5 19. Bd2 Nc4 20. Rec1 h6 21. Be1 Re2 22. Kf1 Rae8 23. Ne5 Nd2+ 24. Kxe2 Nb3 25. Kf1 f6 26. Nf3 Nf4 27. Rab1 Nxc1 28. Rxc1 Re7 29. Bd2 Ne6 30. Re1 Kf7 31. d5 Nc5 32. Rxe7+ Kxe7 33. c4 a6 34. Bb4 Kd6 35. Bxc5+ Kxc5 36. Nd2 b5 37. cxb5 axb5 38. Ke2 Kxd5 39. Kd3 c6 40. Kc3 g5 41. g4 c5 42. f3 Ke5 43. Ne4 b4+ 44. axb4 cxb4+ 45. Kxb4 Kf4 46. Nxf6 Kxf3 1/2-1/2

[Event "Concepcion del Uruguay U2200"]
[Site "Concepcion del Uruguay"]
[Date "2018.08.18"]
[Round "2.5"]
[White "Avendano, Gaston"]
[Black "Sack, Marcos"]
[Result "1-0"]
[ECO "D13"]
[WhiteElo "1917"]
[PlyCount "17"]
[EventDate "2018.08.18"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "ARG"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Bf5 3. c4 c6 4. cxd5 cxd5 5. Nc3 Nf6 6. Qb3 Nbd7 7. Qxb7 Nb6 8. Nb5 Rc8 9. Bf4 1-0

[Event "Concepcion del Uruguay U2200"]
[Site "Concepcion del Uruguay"]
[Date "2018.08.18"]
[Round "3.8"]
[White "Sack, Marcos"]
[Black "De Cuadro, Dionisio"]
[Result "0-1"]
[ECO "C42"]
[BlackElo "1666"]
[PlyCount "46"]
[EventDate "2018.08.18"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "ARG"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. Qe2 Qe7 6. d3 Nf6 7. Qxe7+ Bxe7 8. Be2 Nc6 9. Nc3 Nb4 10. Kd1 0-0 11. Bg5 h6 12. Bh4 Re8 13. a3 Nbd5 14. Nxd5 Nxd5 15. Bg3 Bf6 16. c3 Bg4 17. Nd4 Bxe2+ 18. Nxe2 Re7 19. Re1 Rae8 20. Kd2 b5 21. Nf4 Bg5 22. c4 bxc4 23. dxc4 Bxf4+ 0-1

[Event "Gualeguaychu U1700"]
[Site "Gualeguaychu"]
[Date "2018.05.13"]
[Round "5.3"]
[White "Avila, Mauro"]
[Black "Sack, Marcos"]
[Result "1-0"]
[ECO "A02"]
[WhiteElo "1619"]
[PlyCount "51"]
[EventDate "2018.05.12"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "ARG"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. f4 e5 2. fxe5 d6 3. exd6 Bxd6 4. Nf3 Nf6 5. d3 0-0 6. Bg5 Re8 7. Nc3 Bg4 8. Qd2 Nbd7 9. 0-0-0 c6 10. h3 Be6 11. e4 Be7 12. g4 b5 13. Nd4 b4 14. Nce2 c5 15. Nxe6 fxe6 16. Bg2 Rb8 17. Nf4 Qb6 18. Qe3 a5 19. e5 Nd5 20. Nxd5 exd5 21. Bxd5+ Kh8 22. Bf4 a4 23. e6 Nf6 24. Bc4 Rb7 25. g5 a3 26. b3 1-0

[Event "Gualeguaychu U1700"]
[Site "Gualeguaychu"]
[Date "2018.05.13"]
[Round "4.6"]
[White "Del Valle, Felipe"]
[Black "Sack, Marcos"]
[Result "0-1"]
[ECO "D00"]
[PlyCount "82"]
[EventDate "2018.05.12"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "ARG"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 d5 2. Bf4 Bf5 3. e3 Nf6 4. Nd2 e6 5. c3 Bd6 6. Bg3 0-0 7. Ngf3 Nbd7 8. Qb3 Nb6 9. Ne5 Rb8 10. Ndf3 Nbd7 11. Be2 Ne4 12. Bf4 f6 13. Nxd7 Qxd7 14. Bxd6 Qxd6 15. Qd1 b5 16. Nh4 b4 17. Nxf5 exf5 18. Qc2 Qc6 19. f3 Ng5 20. 0-0 bxc3 21. bxc3 Qe6 22. Qd3 Rbe8 23. h4 Qxe3+ 24. Qxe3 Rxe3 25. hxg5 Rxe2 26. gxf6 Rxf6 27. Rfe1 Rfe6 28. Rxe2 Rxe2 29. Rb1 Rxa2 30. Rb8+ Kf7 31. Rb7 a5 32. Rxc7+ Kf6 33. c4 dxc4 34. Rxc4 a4 35. d5 a3 36. Rc8 Rb2 37. d6 a2 38. Kh2 Rb1 39. Rc6 a1Q 40. d7+ Ke7 41. Rc7 Qe5+ 0-1

[Event "Gualeguaychu U1700"]
[Site "Gualeguaychu"]
[Date "2018.05.12"]
[Round "2.8"]
[White "Dominguez, Alan Leonel"]
[Black "Sack, Marcos"]
[Result "0-1"]
[ECO "C44"]
[PlyCount "60"]
[EventDate "2018.05.12"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "ARG"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 e5 2. d3 Bc5 3. Nf3 Nc6 4. g3 Nf6 5. Bg2 0-0 6. 0-0 d6 7. Nbd2 Be6 8. Re1 Qd7 9. h4 Ng4 10. Nf1 Bxf2+ 11. Kh1 Bxe1 12. Qxe1 Nf6 13. N1h2 Bh3 14. Qf1 Bxg2+ 15. Qxg2 Ng4 16. Bd2 Nxh2 17. Qxh2 Ne7 18. Rg1 d5 19. Nxe5 Qe6 20. Bf4 f6 21. d4 fxe5 22. Bxe5 dxe4 23. g4 e3 24. Qe2 Nd5 25. c4 Rf2 26. Qd3 Qe7 27. Bg3 Nf4 28. Qf5 Rf8 29. Qa5 Qe4+ 30. Rg2 Qxg2# 0-1

[Event "Gualeguaychu U1700"]
[Site "Gualeguaychu"]
[Date "2018.05.12"]
[Round "3.4"]
[White "Sack, Marcos"]
[Black "Gonzalez, Alejandro1111"]
[Result "1/2-1/2"]
[ECO "B06"]
[BlackElo "1466"]
[PlyCount "94"]
[EventDate "2018.05.12"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "ARG"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 g6 2. Bc4 Bg7 3. Nf3 d6 4. 0-0 a6 5. Nc3 b5 6. Bb3 Bb7 7. d3 Nd7 8. Be3 c5 9. Bd5 Bxd5 10. Nxd5 e6 11. Nc3 b4 12. Ne2 Bxb2 13. Rb1 Bg7 14. d4 Ngf6 15. dxc5 dxc5 16. Nd2 0-0 17. f3 Qc7 18. f4 Ng4 19. Bf2 Nxf2 20. Rxf2 Rad8 21. e5 Nb6 22. Qe1 Rd7 23. Ne4 f6 24. Nxf6+ Bxf6 25. exf6 Rxf6 26. c3 Nd5 27. cxb4 Nxb4 28. Qc3 Nd5 29. Qc4 Qa7 30. Nc3 Nxc3 31. Qxc3 Rdf7 32. g3 g5 33. Rbf1 gxf4 34. gxf4 Rg6+ 35. Rg2 Rxg2+ 36. Kxg2 Rg7+ 37. Kf3 Qb7+ 38. Ke3 Qg2 39. Rf2 Qh3+ 40. Rf3 Qxh2 41. Qxc5 Qg1+ 42. Rf2 Rg3+ 43. Ke2 Rg6 44. Qc8+ Kf7 45. Qd7+ Kf8 46. Qd4 Kf7 47. Qd7+ Kf6 1/2-1/2

[Event "Gualeguaychu U1700"]
[Site "Gualeguaychu"]
[Date "2018.05.12"]
[Round "1.7"]
[White "Sack, Marcos"]
[Black "Roko, Tomas1111"]
[Result "0-1"]
[ECO "C01"]
[BlackElo "1349"]
[PlyCount "98"]
[EventDate "2018.05.12"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "ARG"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Nf3 Nf6 5. Bd3 Be7 6. 0-0 0-0 7. Bg5 Nc6 8. Nc3 Bg4 9. Be2 Re8 10. h3 Bf5 11. Ne5 Nxe5 12. dxe5 Ne4 13. Bxe7 Qxe7 14. Nxe4 dxe4 15. Qd5 c6 16. Qb3 Qxe5 17. Qxb7 Rab8 18. Qxc6 Rxb2 19. Rfd1 e3 20. f3 Rxc2 21. f4 Rxc6 22. fxe5 Rc5 23. g4 Bg6 24. Rd4 a5 25. h4 Rcxe5 26. h5 Be4 27. Rf1 R5e7 28. Rfd1 h6 29. Kh2 Kh7 30. Kg3 f5 31. gxf5 Bxf5 32. Rd5 Re5 33. Rxe5 Rxe5 34. Kf4 Rc5 35. Kxe3 Re5+ 36. Kd2 Rd5+ 37. Kc3 Rxd1 38. Bxd1 Be6 39. a4 g5 40. hxg6+ Kxg6 41. Kd4 Kg5 42. Kc5 Bg4 43. Bxg4 Kxg4 44. Kb5 h5 45. Kxa5 h4 46. Kb6 h3 47. a5 h2 48. a6 h1Q 49. a7 Qa8 0-1

