[Event "Buenos Aires FAOGBA op 2nd"]
[Site "Buenos Aires"]
[Date "2024.03.19"]
[Round "9"]
[White "Cumpe, Lucas"]
[Black "Mareco, Sandro"]
[Result "0-1"]
[ECO "B90"]
[WhiteElo "2191"]
[BlackElo "2589"]
[PlyCount "126"]
[EventDate "2024.03.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "CB13_2024"]
[SourceDate "2024.03.27"]
[SourceVersion "1"]
[SourceVersionDate "2024.03.27"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. a3 Nc6 7. Nxc6 bxc6 8. Bd3 g6 9. 0-0 Bg7 10. Re1 0-0 11. h3 Rb8 12. Rb1 Nh5 13. Be3 e5 14. Qd2 d5 15. Ba7 Ra8 16. Bc5 Nf4 17. Kh2 Re8 18. Bf1 Ne6 19. Na4 Rb8 20. Bb4 Ng5 21. Rbd1 Bh6 22. Qc3 d4 23. Qd3 Ne6 24. Bd2 Bf8 25. Qg3 h5 26. Kh1 h4 27. Qf3 Ng5 28. Bxg5 Qxg5 29. Bc4 Be6 30. Bxa6 Ra8 31. Qe2 Ra7 32. b3 Bxa3 33. Bc4 Qe7 34. Bxe6 Qxe6 35. Nb6 Bc5 36. Nc4 Ra2 37. Rf1 Qf6 38. Rc1 Qf4 39. Qg4 Qxg4 40. hxg4 Be7 41. Nxe5 Bg5 42. f4 Bxf4 43. Rxf4 Rxe5 44. g5 Rxg5 45. Rxh4 Rc5 46. Rh3 Rcxc2 47. Rxc2 Rxc2 48. Rd3 c5 49. b4 cxb4 50. Rxd4 b3 51. Rb4 b2 52. Kh2 Kf8 53. Rb7 Ke8 54. Kg3 Kd8 55. Kf3 Kc8 56. Rb4 Kc7 57. g4 Kc6 58. Kf4 Kc5 59. Rb7 Kd4 60. e5 Rc4 61. Kg5 Kc3 62. Kf6 Rxg4 63. Kxf7 Rb4 0-1

[Event "Buenos Aires FAOGBA op 2nd"]
[Site "Buenos Aires"]
[Date "2024.03.18"]
[Round "8"]
[White "Mareco, Sandro"]
[Black "Flores, Diego"]
[Result "1/2-1/2"]
[ECO "D40"]
[WhiteElo "2589"]
[BlackElo "2530"]
[PlyCount "104"]
[EventDate "2024.03.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "CB13_2024"]
[SourceDate "2024.03.27"]
[SourceVersion "1"]
[SourceVersionDate "2024.03.27"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 c5 5. dxc5 0-0 6. a3 Bxc5 7. Nf3 Nc6 8. e3 d5 9. b4 Bd6 10. Bb2 a5 11. b5 Ne5 12. Nxe5 Bxe5 13. Na4 Qc7 14. c5 Bxb2 15. Qxb2 e5 16. Be2 d4 17. exd4 exd4 18. 0-0 Bg4 19. f3 Bf5 20. Rad1 Qe5 21. Bd3 Qe3+ 22. Qf2 Be6 23. Rfe1 Qg5 24. Bc2 d3 25. Rxd3 Nd5 26. Rd4 Rad8 27. f4 Qf6 28. f5 Bc8 29. Red1 Nc7 30. Nc3 Rde8 31. b6 Na6 32. Nd5 Qg5 33. f6 Nxc5 34. Rc4 Ne6 35. h4 Qh6 36. fxg7 Kxg7 37. Qg3+ Kh8 38. Qc3+ f6 39. Rf1 Ng7 40. Nxf6 Rd8 41. Rcf4 Rf7 42. Bb3 Rff8 43. Qc5 Qg6 44. h5 Qd3 45. h6 Nf5 46. Nd5 Rg8 47. Qc3+ Qxc3 48. Nxc3 Rg3 49. R4f3 Rxf3 50. Rxf3 Nd4 51. Rf7 Nxb3 52. Ne4 Be6 1/2-1/2

[Event "Buenos Aires FAOGBA op 2nd"]
[Site "Buenos Aires"]
[Date "2024.03.17"]
[Round "7"]
[White "Villarreal, Agustin"]
[Black "Mareco, Sandro"]
[Result "1/2-1/2"]
[ECO "D35"]
[WhiteElo "2285"]
[BlackElo "2589"]
[PlyCount "44"]
[EventDate "2024.03.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "CB13_2024"]
[SourceDate "2024.03.27"]
[SourceVersion "1"]
[SourceVersionDate "2024.03.27"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. cxd5 exd5 5. Nf3 c6 6. Qc2 g6 7. Bg5 Be7 8. e3 Bf5 9. Bd3 Bxd3 10. Qxd3 Nbd7 11. Bh6 Ng4 12. Bf4 0-0 13. h3 Ngf6 14. 0-0 Re8 15. Qc2 Nb6 16. a3 Nh5 17. Bh2 Bd6 18. Bxd6 Qxd6 19. Rac1 Re7 20. Ne5 Nf6 21. b4 Nfd7 22. Nd3 Nc4 1/2-1/2

[Event "Buenos Aires FAOGBA op 2nd"]
[Site "Buenos Aires"]
[Date "2024.03.16"]
[Round "6"]
[White "Mareco, Sandro"]
[Black "Schnaider, Ilan"]
[Result "1-0"]
[ECO "B90"]
[WhiteElo "2589"]
[BlackElo "2314"]
[PlyCount "79"]
[EventDate "2024.03.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "CB13_2024"]
[SourceDate "2024.03.27"]
[SourceVersion "1"]
[SourceVersionDate "2024.03.27"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. h3 Nc6 7. Be3 e5 8. Nb3 Be6 9. Qf3 Rc8 10. 0-0-0 Na5 11. Bg5 Be7 12. Bxf6 Bxf6 13. Kb1 Qc7 14. h4 h5 15. Be2 Nxb3 16. cxb3 Qd7 17. g3 Bd8 18. Qd3 Ba5 19. f4 Bxc3 20. bxc3 g6 21. c4 Ke7 22. Rhf1 Bh3 23. Rh1 Rhd8 24. fxe5 dxe5 25. Qe3 Qe6 26. Qg5+ f6 27. Qxg6 Rxd1+ 28. Rxd1 Qf7 29. Qxf7+ Kxf7 30. Bxh5+ Ke7 31. Bg6 Rg8 32. h5 Bg4 33. Rh1 Bd7 34. Kc2 Bc6 35. Kd2 f5 36. Bxf5 Rxg3 37. h6 Rg8 38. h7 Rh8 39. Rg1 Kf8 40. Kc3 1-0

[Event "Buenos Aires FAOGBA op 2nd"]
[Site "Buenos Aires"]
[Date "2024.03.16"]
[Round "5"]
[White "Salinas Herrera, Pablo Patricio"]
[Black "Mareco, Sandro"]
[Result "1/2-1/2"]
[ECO "C77"]
[WhiteElo "2478"]
[BlackElo "2589"]
[PlyCount "40"]
[EventDate "2024.03.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "CB13_2024"]
[SourceDate "2024.03.27"]
[SourceVersion "1"]
[SourceVersionDate "2024.03.27"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. Nc3 Bc5 6. Bxc6 dxc6 7. d3 Bg4 8. h3 Bh5 9. Be3 Bd6 10. Qe2 Nd7 11. a3 f6 12. Rd1 c5 13. Nd5 c6 14. Nc3 Nf8 15. Nb1 Ne6 16. c3 Qe7 17. Nbd2 b5 18. Nf1 Bf7 19. Ng3 g6 20. 0-0 Nf4 1/2-1/2

[Event "Buenos Aires FAOGBA op 2nd"]
[Site "Buenos Aires"]
[Date "2024.03.15"]
[Round "4"]
[White "Mareco, Sandro"]
[Black "Mussanti, Diego"]
[Result "1-0"]
[ECO "B54"]
[WhiteElo "2589"]
[BlackElo "2204"]
[PlyCount "57"]
[EventDate "2024.03.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "CB13_2024"]
[SourceDate "2024.03.27"]
[SourceVersion "1"]
[SourceVersionDate "2024.03.27"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 d6 6. g4 a6 7. Be3 Nge7 8. Nb3 b5 9. Qe2 Na5 10. 0-0-0 Nxb3+ 11. axb3 Nc6 12. Kb1 Be7 13. f4 Bb7 14. g5 Nb4 15. Qf2 Rc8 16. Bb6 Qd7 17. Qd4 Qc6 18. Ba5 Nxc2 19. Qxg7 Rf8 20. Bd3 Qc5 21. Bxc2 b4 22. Bxb4 Qxb4 23. Rd4 Qc5 24. Rhd1 f6 25. b4 Qc7 26. Ba4+ Bc6 27. Rc4 Qb7 28. Rxc6 Rxc6 29. Rxd6 1-0

[Event "Buenos Aires FAOGBA op 2nd"]
[Site "Buenos Aires"]
[Date "2024.03.14"]
[Round "3"]
[White "Llanos, Guillermo"]
[Black "Mareco, Sandro"]
[Result "1/2-1/2"]
[ECO "A21"]
[WhiteElo "2286"]
[BlackElo "2589"]
[PlyCount "65"]
[EventDate "2024.03.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "CB13_2024"]
[SourceDate "2024.03.27"]
[SourceVersion "1"]
[SourceVersionDate "2024.03.27"]
[SourceQuality "1"]

1. c4 e5 2. Nf3 d6 3. d4 e4 4. Ng5 f5 5. Nc3 Be7 6. Nh3 c6 7. g3 Nf6 8. Bg5 Be6 9. e3 0-0 10. Nf4 Bf7 11. Be2 Nbd7 12. h4 h6 13. Bxf6 Nxf6 14. h5 a6 15. a4 d5 16. a5 dxc4 17. Qa4 b5 18. axb6 Qxb6 19. 0-0 Qxb2 20. Rfc1 Nd5 21. Nd1 Qd2 22. Kf1 Nxf4 23. gxf4 Kh8 24. Nc3 Qb2 25. Rab1 Qa3 26. Qxc6 Qd6 27. Qxd6 Bxd6 28. Na4 Rab8 29. Nb6 Ba3 30. Rc3 Be7 31. Rcc1 c3 32. Rxc3 Bd8 33. Rc8 1/2-1/2

[Event "Buenos Aires FAOGBA op 2nd"]
[Site "Buenos Aires"]
[Date "2024.03.13"]
[Round "2"]
[White "Mareco, Sandro"]
[Black "Carcamo, Matias"]
[Result "1-0"]
[ECO "C42"]
[WhiteElo "2589"]
[BlackElo "2102"]
[PlyCount "133"]
[EventDate "2024.03.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "CB13_2024"]
[SourceDate "2024.03.27"]
[SourceVersion "1"]
[SourceVersionDate "2024.03.27"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 Qe7 4. Nf3 Nxe4 5. Be2 d5 6. 0-0 Be6 7. d3 Nf6 8. d4 c6 9. Re1 Qc7 10. Bd3 Bd6 11. h3 0-0 12. Ng5 Re8 13. Nd2 Nbd7 14. Ndf3 h6 15. Nxe6 Rxe6 16. Rxe6 fxe6 17. Be3 e5 18. dxe5 Nxe5 19. Nxe5 Bxe5 20. c3 Bf4 21. Bd4 Be5 22. Bg6 Bxd4 23. Qxd4 c5 24. Qe3 Rd8 25. Re1 Kf8 26. Qf3 Qd7 27. Re5 d4 28. Rxc5 d3 29. Rc4 Qd5 30. Rd4 Qxf3 31. Rxd8+ Ke7 32. gxf3 Kxd8 33. Bxd3 Nh5 34. Kh2 b6 35. Bg6 Nf4 36. Bc2 Ke7 37. h4 Kf6 38. Be4 Ke5 39. a3 a6 40. Kg1 Ne2+ 41. Kf1 Nf4 42. b3 a5 43. b4 Kd6 44. c4 axb4 45. axb4 Ke5 46. c5 bxc5 47. bxc5 Ne6 48. c6 Kd6 49. Kg2 h5 50. Kg3 Ke5 51. Bg6 Kd6 52. Be8 Nc7 53. Bd7 Nd5 54. f4 Nf6 55. f5 Nd5 56. Kf3 Ke5 57. Be6 Nc7 58. Ke3 g6 59. f4+ Kd6 60. fxg6 Kxe6 61. f5+ Kf6 62. Kd4 Kxf5 63. g7 Ne6+ 64. Ke3 Nxg7 65. c7 Kg4 66. c8Q+ Kxh4 67. Qf8 1-0

[Event "Buenos Aires FAOGBA op 2nd"]
[Site "Buenos Aires"]
[Date "2024.03.12"]
[Round "1"]
[White "Anigstein, Eugenio"]
[Black "Mareco, Sandro"]
[Result "0-1"]
[ECO "C54"]
[WhiteElo "1953"]
[BlackElo "2589"]
[PlyCount "72"]
[EventDate "2024.03.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ARG"]
[SourceTitle "CB13_2024"]
[SourceDate "2024.03.27"]
[SourceVersion "1"]
[SourceVersionDate "2024.03.27"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. d3 Nf6 5. c3 a5 6. a4 d6 7. Nbd2 0-0 8. 0-0 Ba7 9. h3 Ne7 10. Re1 Ng6 11. Nf1 c6 12. Bb3 Be6 13. Ng3 Qb6 14. Bxe6 Qxf2+ 15. Kh2 fxe6 16. Re2 Qb6 17. Be3 Qc7 18. Ng5 Qe7 19. Bxa7 Rxa7 20. Qb3 Nf4 21. Rf2 Nd7 22. h4 h6 23. Nf5 Rxf5 24. exf5 hxg5 25. hxg5 Nc5 26. Qc2 Ncxd3 27. Rff1 Qxg5 28. g3 Qh5+ 29. Kg1 Qg4 30. Qh2 Ne2+ 31. Kg2 exf5 32. Rh1 Qe4+ 33. Kh3 Qf3 34. Qxe2 Nf4+ 35. Kh4 Nxe2 36. Kh3 Qxg3# 0-1

[Event "Iberoamerican-ch 9th"]
[Site "Panama City"]
[Date "2023.12.02"]
[Round "9"]
[White "Zambrana, Oswaldo"]
[Black "Mareco, Sandro"]
[Result "1-0"]
[ECO "C54"]
[WhiteElo "2400"]
[BlackElo "2606"]
[PlyCount "53"]
[EventDate "2023.11.25"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "PAN"]
[SourceTitle "CB49_2023"]
[SourceDate "2023.12.06"]
[SourceVersion "1"]
[SourceVersionDate "2023.12.06"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. 0-0 Nf6 5. d3 d6 6. c3 a5 7. Re1 0-0 8. h3 Be6 9. Nbd2 Ba7 10. a4 h6 11. Nf1 Nxe4 12. Rxe4 d5 13. Bxd5 Bxd5 14. Re1 Bc5 15. Ng3 Re8 16. Be3 Bf8 17. Nd2 g6 18. Rf1 f5 19. f4 exf4 20. Bxf4 g5 21. Nxf5 gxf4 22. Rxf4 Kh8 23. Qf1 Ne5 24. d4 Ng6 25. Rg4 Ra6 26. Qd3 Be6 27. Rxg6 1-0

[Event "Iberoamerican-ch 9th"]
[Site "Panama City"]
[Date "2023.12.01"]
[Round "8"]
[White "Mareco, Sandro"]
[Black "Cuenca Jimenez, Jose Fernando"]
[Result "1/2-1/2"]
[ECO "D31"]
[WhiteElo "2606"]
[BlackElo "2505"]
[PlyCount "57"]
[EventDate "2023.11.25"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "PAN"]
[SourceTitle "CB49_2023"]
[SourceDate "2023.12.06"]
[SourceVersion "1"]
[SourceVersionDate "2023.12.06"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Be7 4. cxd5 exd5 5. Bf4 c6 6. e3 Bf5 7. Nge2 Nd7 8. h4 Be6 9. Bg3 Ngf6 10. f3 0-0 11. Bf2 Bd6 12. Nf4 c5 13. dxc5 Bxc5 14. Be2 Ne5 15. 0-0 a6 16. Qb3 Qb6 17. Qxb6 Bxb6 18. g4 Ng6 19. Rfd1 Rfd8 20. Ng2 Ne7 21. Rac1 Rac8 22. Na4 Ba7 23. Rxc8 Rxc8 24. Nc3 Bb6 25. Nf4 Ba5 26. Be1 Bb6 27. Bf2 Ba5 28. Be1 Bb6 29. Bf2 1/2-1/2

[Event "Iberoamerican-ch 9th"]
[Site "Panama City"]
[Date "2023.11.30"]
[Round "7"]
[White "Rodriguez Vila, Andres"]
[Black "Mareco, Sandro"]
[Result "0-1"]
[ECO "C00"]
[WhiteElo "2405"]
[BlackElo "2606"]
[PlyCount "68"]
[EventDate "2023.11.25"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "PAN"]
[SourceTitle "CB49_2023"]
[SourceDate "2023.12.06"]
[SourceVersion "1"]
[SourceVersionDate "2023.12.06"]
[SourceQuality "1"]

1. Nf3 d5 2. g3 Nf6 3. Bg2 e6 4. 0-0 Be7 5. d3 0-0 6. Nbd2 c5 7. e4 Nc6 8. Re1 Qc7 9. c3 b6 10. Nf1 dxe4 11. dxe4 Rd8 12. Qa4 Bb7 13. e5 Nd7 14. h4 Rac8 15. h5 h6 16. N1h2 Bf8 17. Qf4 c4 18. Qxc4 Nc5 19. Bf1 Kh8 20. Be3 Nxe5 21. Nxe5 Qxe5 22. Qh4 Nd3 23. Red1 Qd5 24. f3 Qe5 25. Bf2 Nxf2 26. Rxd8 Rxd8 27. Qxd8 Qxg3+ 28. Bg2 Kg8 29. Rf1 Nh3+ 30. Kh1 Nf4 31. Rg1 Nxh5 32. f4 Bxg2+ 33. Rxg2 Qe1+ 34. Rg1 Qe4+ 0-1

[Event "Iberoamerican-ch 9th"]
[Site "Panama City"]
[Date "2023.11.29"]
[Round "6"]
[White "Mareco, Sandro"]
[Black "De la Riva Aguado, Oscar"]
[Result "1/2-1/2"]
[ECO "C11"]
[WhiteElo "2606"]
[BlackElo "2437"]
[PlyCount "39"]
[EventDate "2023.11.25"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "PAN"]
[SourceTitle "CB49_2023"]
[SourceDate "2023.12.06"]
[SourceVersion "1"]
[SourceVersionDate "2023.12.06"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. Nce2 c5 6. c3 cxd4 7. cxd4 f6 8. Nf4 Bb4+ 9. Bd2 Qb6 10. Bxb4 Qxb4+ 11. Qd2 Qxd2+ 12. Kxd2 Ke7 13. exf6+ gxf6 14. Nf3 Nc6 15. Bb5 Kd6 16. Rhe1 Nb6 17. b3 Bd7 18. Rac1 Rae8 19. Nd3 Nb8 20. a4 1/2-1/2

[Event "Iberoamerican-ch 9th"]
[Site "Panama City"]
[Date "2023.11.28"]
[Round "5"]
[White "Henriquez Villagra, Cristobal"]
[Black "Mareco, Sandro"]
[Result "1/2-1/2"]
[ECO "C09"]
[WhiteElo "2630"]
[BlackElo "2606"]
[PlyCount "41"]
[EventDate "2023.11.25"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "PAN"]
[SourceTitle "CB49_2023"]
[SourceDate "2023.12.06"]
[SourceVersion "1"]
[SourceVersionDate "2023.12.06"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 Nc6 5. exd5 exd5 6. Bb5 Qe7+ 7. Be2 Qc7 8. dxc5 Bxc5 9. 0-0 Nf6 10. Nb3 Be7 11. Bg5 0-0 12. c3 Be6 13. Nbd4 Rae8 14. h3 Nxd4 15. Nxd4 Ng4 16. Bxg4 Bxg5 17. Bf3 Bf6 18. Qd2 Qb6 19. Rad1 Bxd4 20. cxd4 f6 21. Rfe1 1/2-1/2

[Event "Iberoamerican-ch 9th"]
[Site "Panama City"]
[Date "2023.11.27"]
[Round "4"]
[White "Espinosa Veloz, Ermes"]
[Black "Mareco, Sandro"]
[Result "1/2-1/2"]
[ECO "B50"]
[WhiteElo "2478"]
[BlackElo "2606"]
[PlyCount "100"]
[EventDate "2023.11.25"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "PAN"]
[SourceTitle "CB49_2023"]
[SourceDate "2023.12.06"]
[SourceVersion "1"]
[SourceVersionDate "2023.12.06"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. c3 Nf6 4. h3 Nc6 5. Bd3 g5 6. Bc2 g4 7. hxg4 Bxg4 8. d4 d5 9. exd5 Nxd5 10. dxc5 e6 11. Be4 Bxc5 12. Bxd5 Qxd5 13. Qxd5 exd5 14. Nbd2 0-0-0 15. Nb3 Rde8+ 16. Kf1 Bb6 17. Nbd4 h5 18. Be3 Bxf3 19. Nxf3 Bxe3 20. fxe3 Rxe3 21. Rd1 Ne5 22. Rxd5 Nxf3 23. gxf3 Rxf3+ 24. Ke2 Rg3 25. Rhxh5 Rg2+ 26. Kd3 Rxh5 27. Rxh5 Rxb2 28. Rf5 Rxa2 29. Rxf7 Ra6 30. c4 Rd6+ 31. Kc3 Rd7 32. Rf6 b6 33. Kb3 Kb7 34. Rh6 a6 35. Rg6 Rd3+ 36. Kb2 a5 37. Rh6 Kc7 38. Rg6 Rd6 39. Rg5 Kc6 40. Kb3 Rf6 41. Rh5 Rf3+ 42. Kb2 Re3 43. Rg5 Kd6 44. Rb5 Kc6 45. Rg5 a4 46. Rh5 Rb3+ 47. Kc2 Rg3 48. Kb2 a3+ 49. Ka2 Rc3 50. Rg5 Rxc4 1/2-1/2

[Event "Iberoamerican-ch 9th"]
[Site "Panama City"]
[Date "2023.11.26"]
[Round "2"]
[White "Baules Rodriguez, Jorge Luis"]
[Black "Mareco, Sandro"]
[Result "0-1"]
[ECO "E36"]
[WhiteElo "2283"]
[BlackElo "2606"]
[PlyCount "156"]
[EventDate "2023.11.25"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "PAN"]
[SourceTitle "CB49_2023"]
[SourceDate "2023.12.06"]
[SourceVersion "1"]
[SourceVersionDate "2023.12.06"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 d5 5. a3 Bxc3+ 6. Qxc3 Nbd7 7. Nf3 0-0 8. Bg5 h6 9. Bxf6 Nxf6 10. e3 b6 11. Bd3 dxc4 12. Qxc4 Bb7 13. Be2 Rc8 14. 0-0 c5 15. Rfd1 Qe7 16. Rac1 Nd5 17. Qb3 Rc7 18. dxc5 bxc5 19. Nd2 Nb6 20. Bf3 Bxf3 21. Nxf3 c4 22. Qb5 Rfc8 23. Nd4 Nd5 24. Ne2 Rc5 25. Qa4 Rb8 26. Rxc4 Rxb2 27. Rxc5 Qxc5 28. Nf4 Nc3 29. Qe8+ Qf8 30. Qxf8+ Kxf8 31. Ra1 a5 32. h3 a4 33. Nd3 Rb3 34. Kf1 Ke7 35. Nc1 Kd6 36. Ke1 Rb2 37. Nd3 Re2+ 38. Kf1 Rd2 39. Nb4 Kc5 40. Ke1 Re2+ 41. Kf1 Kc4 42. Rc1 Rb2 43. Ke1 Kb3 44. Nd3 Re2+ 45. Kf1 Rd2 46. Nc5+ Kb2 47. Nxa4+ Kxc1 48. Nxc3 Kc2 49. Ne4 Rd5 50. Ke2 Kb3 51. a4 Kb4 52. g4 Rd8 53. Ng3 Kxa4 54. Nh5 g6 55. Nf4 g5 56. Nd3 Kb5 57. Ne5 f6 58. Nf3 Kc6 59. Nd2 Kd5 60. Kf3 Rc8 61. Ne4 Ke5 62. Ng3 f5 63. Nh5 Rc3 64. Ng3 Ra3 65. Ne2 f4 66. Nd4 fxe3 67. fxe3 Ra8 68. Nc6+ Kd6 69. Nd4 Rf8+ 70. Ke2 Kd5 71. Nb5 Ke5 72. Nd4 Rf7 73. Nc6+ Ke4 74. Nd4 Ra7 75. Kf2 Ra2+ 76. Kg3 e5 77. Nf5 Re2 78. Nxh6 Rxe3+ 0-1

[Event "Iberoamerican-ch 9th"]
[Site "Panama City"]
[Date "2023.11.26"]
[Round "3"]
[White "Mareco, Sandro"]
[Black "Duran Vega, Sergio"]
[Result "1-0"]
[ECO "B31"]
[WhiteElo "2606"]
[BlackElo "2392"]
[PlyCount "35"]
[EventDate "2023.11.25"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "PAN"]
[SourceTitle "CB49_2023"]
[SourceDate "2023.12.06"]
[SourceVersion "1"]
[SourceVersionDate "2023.12.06"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. 0-0 Bg7 5. c3 e5 6. d4 cxd4 7. cxd4 exd4 8. Bf4 Nge7 9. Bd6 a6 10. Bd3 0-0 11. Nbd2 Re8 12. a4 b6 13. Bc4 h6 14. Bxf7+ Kxf7 15. Qb3+ Kf8 16. Ng5 hxg5 17. f4 g4 18. f5 1-0

[Event "Iberoamerican-ch 9th"]
[Site "Panama City"]
[Date "2023.11.25"]
[Round "1"]
[White "Mareco, Sandro"]
[Black "Fernandez, Maria Florencia"]
[Result "1-0"]
[ECO "E05"]
[WhiteElo "2606"]
[BlackElo "2099"]
[PlyCount "139"]
[EventDate "2023.11.25"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "PAN"]
[SourceTitle "CB49_2023"]
[SourceDate "2023.12.06"]
[SourceVersion "1"]
[SourceVersionDate "2023.12.06"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Be7 5. 0-0 0-0 6. d4 dxc4 7. Qc2 a6 8. Qxc4 b5 9. Qc2 Bb7 10. Bd2 Nbd7 11. Ba5 Nb6 12. Nbd2 Rc8 13. Qd3 Nfd7 14. Ng5 Bxg5 15. Bxb7 Rb8 16. Bxa6 Bxd2 17. Bxd2 Nc4 18. Bb4 Nxb2 19. Qc2 Re8 20. Qxb2 Rb6 21. Bc3 Qb8 22. Rfb1 Rxa6 23. Qxb5 Qxb5 24. Rxb5 Rea8 25. Rb7 Rc6 26. Bb4 Rc4 27. a4 Nb6 28. Bc5 Rcxa4 29. Rxa4 Nxa4 30. Rxc7 Nc3 31. e3 h6 32. Ra7 Rb8 33. Ra3 Ne4 34. Ra2 Rb1+ 35. Kg2 Rc1 36. Bb4 g5 37. f3 Rb1 38. Ba5 Nd6 39. Rc2 Nf5 40. Bd2 Kh7 41. Bc1 Kg6 42. g4 Nh4+ 43. Kf2 h5 44. h3 Ra1 45. e4 hxg4 46. hxg4 Ra4 47. Be3 Ra6 48. d5 exd5 49. exd5 f6 50. Rd2 Rd6 51. Bc5 Rd7 52. d6 Kf7 53. Ke3 Ke6 54. Rb2 Kd5 55. Rb5 Ng2+ 56. Kd2 Nf4 57. Ba3+ Ke6 58. Rb8 Ng6 59. Re8+ Kf7 60. Rc8 Ne5 61. Ke3 Ke6 62. Ke4 Ng6 63. Bc5 Rb7 64. Rc7 Rb8 65. Rg7 Rc8 66. d7 Rd8 67. Rxg6 Rxd7 68. Bd4 Rf7 69. Rg8 Re7 70. Rf8 1-0

[Event "FIDE Grand Swiss"]
[Site "Douglas"]
[Date "2023.11.05"]
[Round "11"]
[White "Lazavik, Denis"]
[Black "Mareco, Sandro"]
[Result "1-0"]
[ECO "D37"]
[WhiteElo "2560"]
[BlackElo "2606"]
[PlyCount "95"]
[EventDate "2023.10.25"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "IOM"]
[SourceTitle "Mega2024 Update 01"]
[Source "Chessbase"]
[SourceDate "2023.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.12"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 a6 4. Nc3 d5 5. cxd5 exd5 6. Bg5 Be6 7. e3 Nbd7 8. Bd3 c6 9. 0-0 Bd6 10. Rc1 0-0 11. Nd2 Be7 12. f4 Ng4 13. Bxe7 Qxe7 14. Qe2 f5 15. Nf3 Ngf6 16. Na4 Ne4 17. Ne5 Rae8 18. a3 g5 19. Nxd7 Bxd7 20. Bxe4 fxe4 21. fxg5 Qxg5 22. Rxf8+ Rxf8 23. Nc3 Bg4 24. Qd2 Qh6 25. Qe1 Kh8 26. Rc2 Rg8 27. Kh1 Rg5 28. Rf2 Rh5 29. Qg1 a5 30. Rf4 Be6 31. Ne2 b6 32. b4 axb4 33. axb4 Rh4 34. Rxh4 Qxh4 35. Nf4 Bf7 36. h3 Kg8 37. Kh2 Qe7 38. Qe1 c5 39. dxc5 bxc5 40. bxc5 Qxc5 41. Qg3+ Kf8 42. Ne2 Qe7 43. Qf4 Kg7 44. Nd4 Bg6 45. g4 Qb4 46. h4 Kg8 47. h5 Qb2+ 48. Kh3 1-0

[Event "FIDE Grand Swiss"]
[Site "Douglas"]
[Date "2023.11.04"]
[Round "10"]
[White "Mareco, Sandro"]
[Black "Royal, Shreyas"]
[Result "1/2-1/2"]
[ECO "B51"]
[WhiteElo "2606"]
[BlackElo "2407"]
[PlyCount "67"]
[EventDate "2023.10.25"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "IOM"]
[SourceTitle "Mega2024 Update 01"]
[Source "Chessbase"]
[SourceDate "2023.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.12"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Nd7 4. a4 Ngf6 5. Nc3 a6 6. Be2 g6 7. 0-0 Bg7 8. a5 0-0 9. d3 b5 10. axb6 a5 11. Bf4 Bb7 12. Qd2 Bc6 13. Bh6 Qxb6 14. Ra2 Rfb8 15. Rfa1 a4 16. Bxg7 Kxg7 17. h3 e5 18. Bd1 Qc7 19. Qe3 Rb4 20. b3 axb3 21. Rxa8 d5 22. R1a7 Qd6 23. Rc8 d4 24. Qe1 dxc3 25. cxb3 Bb7 26. Rd8 Qxd3 27. Nxe5 Qb1 28. Nxd7 c2 29. Nxc5 Bd5 30. Ne6+ Bxe6 31. Qxb4 cxd1R+ 32. Rxd1 Qxd1+ 33. Kh2 Qxb3 34. Qxb3 1/2-1/2

[Event "FIDE Grand Swiss"]
[Site "Douglas"]
[Date "2023.11.03"]
[Round "9"]
[White "Dardha, Daniel"]
[Black "Mareco, Sandro"]
[Result "1/2-1/2"]
[ECO "A50"]
[WhiteElo "2580"]
[BlackElo "2606"]
[PlyCount "52"]
[EventDate "2023.10.25"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "IOM"]
[SourceTitle "Mega2024 Update 01"]
[Source "Chessbase"]
[SourceDate "2023.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.12"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Bf4 d5 4. cxd5 exd5 5. e3 Bd6 6. Bxd6 Qxd6 7. Bd3 0-0 8. Nc3 Re8 9. h3 a6 10. Nf3 Nbd7 11. 0-0 b6 12. Qb1 c5 13. b3 Bb7 14. Qb2 Rac8 15. a4 Rc7 16. Rac1 g6 17. Rfd1 Rec8 18. Bf1 Qe7 19. Rc2 Nf8 20. Rdc1 Ne6 21. Ne2 Ne4 22. Ne5 Qf6 23. Ng4 Qg7 24. Ne5 Qf6 25. Ng4 Qg7 26. Ne5 Qf6 1/2-1/2

[Event "FIDE Grand Swiss"]
[Site "Douglas"]
[Date "2023.11.02"]
[Round "8"]
[White "Mareco, Sandro"]
[Black "Xiong, Jeffery"]
[Result "0-1"]
[ECO "D27"]
[WhiteElo "2606"]
[BlackElo "2693"]
[PlyCount "28"]
[EventDate "2023.10.25"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "IOM"]
[SourceTitle "Mega2024 Update 01"]
[Source "Chessbase"]
[SourceDate "2023.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.12"]
[SourceQuality "1"]

1. d4 d5 2. c4 dxc4 3. Nf3 a6 4. e3 Nf6 5. Bxc4 e6 6. 0-0 c5 7. b3 Nbd7 8. Bb2 Be7 9. Be2 0-0 10. Nbd2 b6 11. Ne5 Bb7 12. Bf3 Qc7 13. Rc1 Nxe5 14. Bxb7 Neg4 0-1

[Event "FIDE Grand Swiss"]
[Site "Douglas"]
[Date "2023.11.01"]
[Round "7"]
[White "Saric, Ivan"]
[Black "Mareco, Sandro"]
[Result "1-0"]
[ECO "C78"]
[WhiteElo "2647"]
[BlackElo "2606"]
[PlyCount "57"]
[EventDate "2023.10.25"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "IOM"]
[SourceTitle "Mega2024 Update 01"]
[Source "Chessbase"]
[SourceDate "2023.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.12"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 b5 6. Bb3 Bb7 7. Nc3 Bc5 8. Nd5 0-0 9. c3 Na5 10. Bc2 Be7 11. d4 d6 12. Re1 Nc4 13. b3 Nb6 14. c4 bxc4 15. bxc4 Nxc4 16. Nxe7+ Qxe7 17. Qd3 Nb6 18. dxe5 dxe5 19. Ba3 c5 20. Rab1 Nfd7 21. Qc3 Rab8 22. Bb2 Rfe8 23. Nxe5 Nxe5 24. Qxe5 Qf8 25. Qg3 Nd7 26. Ba4 Rbd8 27. Bxg7 Qxg7 28. Rxb7 Re7 29. Rd1 1-0

[Event "FIDE Grand Swiss"]
[Site "Douglas"]
[Date "2023.10.30"]
[Round "6"]
[White "Mareco, Sandro"]
[Black "Pichot, Alan"]
[Result "1/2-1/2"]
[ECO "D37"]
[WhiteElo "2606"]
[BlackElo "2650"]
[PlyCount "94"]
[EventDate "2023.10.25"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "IOM"]
[SourceTitle "Mega2024 Update 01"]
[Source "Chessbase"]
[SourceDate "2023.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.12"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 a6 4. Nc3 d5 5. cxd5 exd5 6. Bg5 Be6 7. e3 Nbd7 8. Bd3 Bd6 9. h3 c6 10. Bf4 Qc7 11. Qd2 0-0 12. 0-0 Rfe8 13. Bxd6 Qxd6 14. Rac1 Nb6 15. Qc2 Qe7 16. Rfe1 g6 17. Ne5 Nc8 18. f3 Nh5 19. Rcd1 Nd6 20. Qf2 Rad8 21. Bb1 f6 22. Nd3 f5 23. Ne2 Bc8 24. Nef4 Qg5 25. a3 Re7 26. Ba2 Kh8 27. Ne5 Rde8 28. Qd2 Qh6 29. Nxh5 Qxh5 30. Re2 g5 31. Rf2 Nf7 32. Nxf7+ Rxf7 33. Re1 Rfe7 34. e4 g4 35. fxg4 fxg4 36. hxg4 Bxg4 37. Qb4 dxe4 38. Ref1 Bf3 39. gxf3 Rg7+ 40. Rg2 Rxg2+ 41. Kxg2 Qg5+ 42. Kh3 Re7 43. Qd6 Qh5+ 44. Kg3 Rg7+ 45. Kf2 Qxf3+ 46. Ke1 Qe3+ 47. Kd1 Qd3+ 1/2-1/2

[Event "FIDE Grand Swiss"]
[Site "Douglas"]
[Date "2023.10.29"]
[Round "5"]
[White "Praggnanandhaa, Rameshbabu"]
[Black "Mareco, Sandro"]
[Result "1/2-1/2"]
[ECO "C54"]
[WhiteElo "2738"]
[BlackElo "2606"]
[PlyCount "88"]
[EventDate "2023.10.25"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "IOM"]
[SourceTitle "Mega2024 Update 01"]
[Source "Chessbase"]
[SourceDate "2023.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.12"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d3 a5 6. Bg5 h6 7. Bh4 d6 8. Nbd2 Bd7 9. Qe2 Ba7 10. 0-0-0 Ne7 11. Bxf6 gxf6 12. d4 Ng6 13. g3 Rb8 14. a4 Kf8 15. Rdf1 Rh7 16. Bb3 Qe8 17. dxe5 fxe5 18. Nh4 Nxh4 19. gxh4 Bxa4 20. Bxa4 Qxa4 21. Rhg1 Qd7 22. Rg3 Rg7 23. f4 exf4 24. Rxg7 Kxg7 25. Rxf4 Re8 26. Nf1 Kf8 27. Ng3 d5 28. Qd2 Qc6 29. exd5 Qb6 30. Kc2 Qe3 31. Qxe3 Bxe3 32. Rf3 Bg1 33. h3 Re3 34. Rxe3 Bxe3 35. Nf5 Bf4 36. h5 a4 37. c4 Ke8 38. Kc3 Be5+ 39. Kb4 Bxb2 40. Kxa4 Bc1 41. Kb5 Kd7 42. Kc5 Bd2 43. Kb5 Bc1 44. Kc5 Bd2 1/2-1/2

[Event "FIDE Grand Swiss"]
[Site "Douglas"]
[Date "2023.10.28"]
[Round "4"]
[White "Mareco, Sandro"]
[Black "Bluebaum, Matthias"]
[Result "1/2-1/2"]
[ECO "A17"]
[WhiteElo "2606"]
[BlackElo "2668"]
[PlyCount "69"]
[EventDate "2023.10.25"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "IOM"]
[SourceTitle "Mega2024 Update 01"]
[Source "Chessbase"]
[SourceDate "2023.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.12"]
[SourceQuality "1"]

1. c4 Nf6 2. Nf3 e6 3. Nc3 d5 4. e3 Bd6 5. b3 0-0 6. Bb2 c5 7. g4 Nc6 8. g5 Ne4 9. h4 a6 10. Bg2 Nxc3 11. Bxc3 dxc4 12. bxc4 e5 13. Nh2 Be6 14. Be4 f5 15. gxf6 Qxf6 16. f4 Nd4 17. Ng4 Qf7 18. 0-0 Qe7 19. Nxe5 Bxe5 20. Qh5 g6 21. Qxe5 Ne2+ 22. Kg2 Nxc3 23. Qxc3 Bh3+ 24. Kxh3 Qxe4 25. Qe5 Qxc4 26. Rfc1 Qd3 27. Rxc5 Qxd2 28. Rc7 Rf7 29. Rac1 Qxa2 30. Rc8+ Rxc8 31. Rxc8+ Rf8 32. Rc7 Rf7 33. Rc8+ Rf8 34. Rc7 Rf7 35. Rc8+ 1/2-1/2

[Event "FIDE Grand Swiss"]
[Site "Douglas"]
[Date "2023.10.27"]
[Round "3"]
[White "Ivanchuk, Vassily"]
[Black "Mareco, Sandro"]
[Result "1/2-1/2"]
[ECO "E51"]
[WhiteElo "2653"]
[BlackElo "2606"]
[PlyCount "83"]
[EventDate "2023.10.25"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "IOM"]
[SourceTitle "Mega2024 Update 01"]
[Source "Chessbase"]
[SourceDate "2023.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.12"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Bb4 5. e3 0-0 6. a3 Bxc3+ 7. bxc3 c5 8. Bb2 Nc6 9. Be2 dxc4 10. Bxc4 b6 11. Bd3 Bb7 12. e4 Na5 13. Nd2 e5 14. d5 c4 15. Be2 Qc7 16. a4 Rfd8 17. 0-0 Nd7 18. Ba3 Nc5 19. Rb1 Ba6 20. Qc2 Rac8 21. Rfd1 Qd7 22. Bb4 g6 23. Nf1 h5 24. Ne3 Qxa4 25. Qxa4 Nxa4 26. g4 h4 27. g5 Nb7 28. Ng4 Nbc5 29. f3 Nd7 30. Rdc1 Nac5 31. Bxc5 Nxc5 32. Nxe5 b5 33. Rc2 Rd6 34. Kf2 Rc7 35. Ke3 Rb6 36. Rd2 Bc8 37. d6 Rcb7 38. Rd5 Nd7 39. Ng4 a5 40. f4 a4 41. Rd2 Kg7 42. e5 1/2-1/2

[Event "FIDE Grand Swiss"]
[Site "Douglas"]
[Date "2023.10.26"]
[Round "2"]
[White "Mareco, Sandro"]
[Black "Shevchenko, Kirill"]
[Result "1/2-1/2"]
[ECO "A48"]
[WhiteElo "2606"]
[BlackElo "2671"]
[PlyCount "129"]
[EventDate "2023.10.25"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "IOM"]
[SourceTitle "Mega2024 Update 01"]
[Source "Chessbase"]
[SourceDate "2023.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.12"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. Bg5 Bg7 4. e3 d6 5. Be2 c5 6. 0-0 0-0 7. c3 Qb6 8. Nbd2 Bf5 9. Nc4 Qc7 10. h3 Nbd7 11. Re1 h6 12. Bf4 Nb6 13. Nfd2 Nxc4 14. Bxc4 Ne4 15. Bd5 Nf6 16. Bb3 e5 17. Bh2 Rad8 18. e4 Bc8 19. Nf3 c4 20. Bc2 Rfe8 21. a4 b6 22. Qd2 a6 23. Kh1 Bb7 24. d5 b5 25. Ng1 Re7 26. Ne2 h5 27. Bg3 Ree8 28. Bh4 Rc8 29. f4 exf4 30. Qxf4 Nd7 31. axb5 axb5 32. Nd4 Be5 33. Qf3 b4 34. Ba4 Rf8 35. Be7 Rfe8 36. Bg5 Rf8 37. Bh6 Rfd8 38. Bg5 Rf8 39. Bh6 Rfd8 40. Nb5 Qb8 41. Rf1 f6 42. Bf4 Rf8 43. cxb4 Rf7 44. Qg3 Kh7 45. Nd4 Bxf4 46. Rxf4 Ne5 47. Raf1 Qa7 48. Ne6 Bxd5 49. exd5 Qxa4 50. Rxf6 Rxf6 51. Rxf6 Qd1+ 52. Kh2 Qxd5 53. Qf4 Rg8 54. b5 Qxb5 55. Ng5+ Kg7 56. Ne6+ Kh7 57. Ng5+ Kg7 58. Rxd6 Nd3 59. Qf6+ Kh6 60. Nf7+ Kh7 61. Rb6 Qd5 62. Kh1 Ne1 63. Ng5+ Kh6 64. Nf7+ Kh7 65. Ng5+ 1/2-1/2

[Event "FIDE Grand Swiss"]
[Site "Douglas"]
[Date "2023.10.25"]
[Round "1"]
[White "Grandelius, Nils"]
[Black "Mareco, Sandro"]
[Result "1/2-1/2"]
[ECO "C92"]
[WhiteElo "2689"]
[BlackElo "2606"]
[PlyCount "153"]
[EventDate "2023.10.25"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "IOM"]
[SourceTitle "Mega2024 Update 01"]
[Source "Chessbase"]
[SourceDate "2023.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.12"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 d6 8. c3 0-0 9. h3 Bb7 10. d4 Re8 11. Ng5 Rf8 12. Nf3 Re8 13. a3 Bf8 14. d5 Ne7 15. c4 h6 16. Nc3 c6 17. dxc6 Bxc6 18. Qd3 Ng6 19. cxb5 axb5 20. Be3 Qd7 21. Nd5 Nxd5 22. Bxd5 Ra4 23. Bd2 Bxd5 24. Qxd5 Rc4 25. Rac1 Rec8 26. Rxc4 bxc4 27. Be3 Ne7 28. Qd2 Qe6 29. Rd1 Rc6 30. a4 f5 31. exf5 Nxf5 32. a5 Nxe3 33. fxe3 Be7 34. Ra1 Ra6 35. e4 Bd8 36. Qb4 Kh7 37. Qb5 Qc8 38. Kh2 c3 39. bxc3 Qxc3 40. Qxa6 Qxa1 41. Qxd6 Qxa5 42. h4 Qc7 43. Qe6 Qe7 44. Qf5+ g6 45. Qc8 Qc7 46. Qe6 Qe7 47. Qd5 Bc7 48. Kh3 Bd6 49. h5 gxh5 50. Nh4 Qf6 51. Qb7+ Kg8 52. Qc8+ Bf8 53. Qe8 Qg5 54. Qe6+ Kh7 55. Nf3 Qf4 56. Qxe5 Qxe5 57. Nxe5 Bd6 58. Nc6 Kg6 59. Kh4 Bf4 60. Nb4 Bg5+ 61. Kg3 Bd2 62. Nd5 Kg5 63. Kf3 Bc1 64. Ne3 Bb2 65. Nc4 Bc3 66. Nd6 Bb2 67. Nb7 Bd4 68. Nd8 Bb2 69. Ne6+ Kf6 70. Nf4 Kg5 71. Nh3+ Kf6 72. Ke3 Ke5 73. Kd3 Bc1 74. Ng1 Ba3 75. Ne2 Kf6 76. Nd4 Kg5 77. Ke2 1/2-1/2

[Event "Cancun Camara Cup 11th"]
[Site "Cancun"]
[Date "2023.10.15"]
[Round "8"]
[White "Mareco, Sandro"]
[Black "Albornoz Cabrera, Carlos Daniel"]
[Result "1-0"]
[ECO "E14"]
[WhiteElo "2606"]
[BlackElo "2582"]
[PlyCount "97"]
[EventDate "2023.10.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "MEX"]
[SourceTitle "Mega2024 Update 01"]
[Source "Chessbase"]
[SourceDate "2023.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.12"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. e3 b6 5. b3 Bb7 6. Nbd2 Bd6 7. Bb2 0-0 8. Bd3 Nbd7 9. Rc1 c5 10. 0-0 cxd4 11. exd4 Ne4 12. Re1 Nxd2 13. Nxd2 Qh4 14. Nf3 Qh5 15. c5 bxc5 16. Bb5 Nf6 17. dxc5 Bf4 18. c6 Bxc1 19. Qxc1 Rac8 20. Ba3 Bxc6 21. Bxc6 Rfd8 22. Be7 Rd7 23. Bxd7 Rxc1 24. Rxc1 h6 25. Bc6 Qg4 26. Bb5 Qf4 27. Rc8+ Kh7 28. Bd3+ Ne4 29. h3 f5 30. Rc6 Qb8 31. Ba3 Qe8 32. Rc7 Qd8 33. Re7 e5 34. Kh2 Qa5 35. Bb2 Qc5 36. Rxe5 Qxf2 37. Bd4 Qg3+ 38. Kg1 Qf4 39. Re7 Qc1+ 40. Bf1 Kg8 41. Nh4 Qd1 42. Nxf5 Nd2 43. Rxg7+ Kf8 44. Bc5+ Ke8 45. Nd6+ Kf8 46. Rf7+ Kg8 47. Rf2 d4 48. Nf5 d3 49. Ne7+ 1-0

[Event "Cancun Camara Cup 11th"]
[Site "Cancun"]
[Date "2023.10.15"]
[Round "9"]
[White "Martinez Alcantara, Jose Eduardo"]
[Black "Mareco, Sandro"]
[Result "1/2-1/2"]
[ECO "C77"]
[WhiteElo "2611"]
[BlackElo "2606"]
[PlyCount "31"]
[EventDate "2023.10.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "MEX"]
[SourceTitle "Mega2024 Update 01"]
[Source "Chessbase"]
[SourceDate "2023.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.12"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. Nc3 Bc5 6. d3 d6 7. Bxc6+ bxc6 8. Be3 Bxe3 9. fxe3 0-0 10. 0-0 Re8 11. Qe1 Be6 12. Qg3 Nh5 13. Qf2 Nf6 14. Qg3 Nh5 15. Qf2 Nf6 16. Qg3 1/2-1/2

[Event "Cancun Camara Cup 11th"]
[Site "Cancun"]
[Date "2023.10.14"]
[Round "7"]
[White "Gonzalez Zamora, Juan Carlos"]
[Black "Mareco, Sandro"]
[Result "1/2-1/2"]
[ECO "E11"]
[WhiteElo "2479"]
[BlackElo "2606"]
[PlyCount "71"]
[EventDate "2023.10.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "MEX"]
[SourceTitle "Mega2024 Update 01"]
[Source "Chessbase"]
[SourceDate "2023.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.12"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. g3 d5 4. Nf3 Bb4+ 5. Bd2 Be7 6. Bg2 0-0 7. Qc2 c6 8. 0-0 Nbd7 9. Bg5 h6 10. Bxf6 Bxf6 11. Nbd2 b6 12. e4 Ba6 13. Rfd1 Rc8 14. Rac1 Nb8 15. b4 dxc4 16. Nxc4 Qc7 17. Ne3 Qb7 18. a4 Rfd8 19. Qb2 Qd7 20. h4 Qe8 21. e5 Be7 22. Ne1 Bb7 23. N1c2 Rd7 24. b5 Rcd8 25. Nb4 cxb5 26. axb5 Bxg2 27. Kxg2 Rc8 28. Rxc8 Qxc8 29. Rc1 Qb7+ 30. Kg1 a6 31. Nc6 axb5 32. Nxe7+ Rxe7 33. Qxb5 Rc7 34. Qe8+ Kh7 35. Rxc7 Qxc7 36. d5 1/2-1/2

[Event "Cancun Camara Cup 11th"]
[Site "Cancun"]
[Date "2023.10.14"]
[Round "6"]
[White "Mareco, Sandro"]
[Black "Diaz Rosas, Julio Cesar"]
[Result "1-0"]
[ECO "E14"]
[WhiteElo "2606"]
[BlackElo "2337"]
[PlyCount "65"]
[EventDate "2023.10.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "MEX"]
[SourceTitle "Mega2024 Update 01"]
[Source "Chessbase"]
[SourceDate "2023.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.12"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 e6 3. Nf3 d5 4. e3 b6 5. d4 Bb7 6. cxd5 exd5 7. b3 Bd6 8. Bb2 0-0 9. Rc1 Re8 10. Bd3 Nbd7 11. 0-0 a6 12. Ne2 Rc8 13. Ng3 g6 14. Qe2 Qe7 15. Rc2 Ra8 16. Rfc1 Ng4 17. Nf1 f6 18. Rxc7 Bxc7 19. Rxc7 Rab8 20. Bxa6 Bxa6 21. Qxa6 Qe6 22. h3 Nh6 23. Ne1 Nf8 24. Nd3 Nf7 25. Qb5 Qd6 26. Ra7 Rbc8 27. Nb4 Red8 28. Ra6 Qe6 29. Ng3 Rd6 30. Ne2 Qf5 31. Nc3 Ng5 32. Nbxd5 Qc2 33. Ne7+ 1-0

[Event "Cancun Camara Cup 11th"]
[Site "Cancun"]
[Date "2023.10.13"]
[Round "5"]
[White "Berdayes Ason, Dylan Isidro"]
[Black "Mareco, Sandro"]
[Result "1/2-1/2"]
[ECO "E59"]
[WhiteElo "2495"]
[BlackElo "2606"]
[PlyCount "54"]
[EventDate "2023.10.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "MEX"]
[SourceTitle "Mega2024 Update 01"]
[Source "Chessbase"]
[SourceDate "2023.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.12"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 0-0 5. Bd3 d5 6. a3 Bxc3+ 7. bxc3 dxc4 8. Bxc4 c5 9. Bd3 Nc6 10. Nf3 Qc7 11. 0-0 e5 12. Qc2 Re8 13. Nxe5 Nxe5 14. dxe5 Qxe5 15. f3 Bd7 16. Rd1 Bc6 17. e4 Rad8 18. Bb2 Nh5 19. Bf1 Qg5 20. Rxd8 Rxd8 21. Rd1 Qe3+ 22. Kh1 Ng3+ 23. hxg3 Qh6+ 24. Kg1 Qe3+ 25. Kh1 Qh6+ 26. Kg1 Qe3+ 27. Kh1 Qh6+ 1/2-1/2

[Event "Cancun Camara Cup 11th"]
[Site "Cancun"]
[Date "2023.10.13"]
[Round "4"]
[White "Mareco, Sandro"]
[Black "Galaviz Medina, Sion Radamantys"]
[Result "1/2-1/2"]
[ECO "B90"]
[WhiteElo "2606"]
[BlackElo "2454"]
[PlyCount "69"]
[EventDate "2023.10.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "MEX"]
[SourceTitle "Mega2024 Update 01"]
[Source "Chessbase"]
[SourceDate "2023.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.12"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e5 7. Nb3 Be7 8. f3 Be6 9. Qd2 h5 10. Be2 Nbd7 11. Nd5 Bxd5 12. exd5 Qc7 13. c4 a5 14. Rc1 0-0 15. 0-0 h4 16. Bd3 Nh5 17. Rfd1 a4 18. Na1 Nc5 19. Nc2 Bd8 20. Na3 Qe7 21. Bb1 Ba5 22. Qc2 f5 23. Nb5 Rac8 24. b3 axb3 25. axb3 Bb4 26. Re1 Qf6 27. Rcd1 Qg6 28. Bd2 Bxd2 29. Rxd2 e4 30. Qc3 Nf4 31. Qe3 Qh6 32. fxe4 fxe4 33. Nc3 Ncd3 34. Red1 Rce8 35. Nxe4 1/2-1/2

[Event "Cancun Camara Cup 11th"]
[Site "Cancun"]
[Date "2023.10.12"]
[Round "2"]
[White "Mareco, Sandro"]
[Black "Hernandez, Alexander"]
[Result "1-0"]
[ECO "A11"]
[WhiteElo "2606"]
[BlackElo "2100"]
[PlyCount "73"]
[EventDate "2023.10.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "MEX"]
[SourceTitle "Mega2024 Update 01"]
[Source "Chessbase"]
[SourceDate "2023.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.12"]
[SourceQuality "1"]

1. Nf3 d5 2. c4 c6 3. g3 Nf6 4. Bg2 g6 5. b3 Bg7 6. Bb2 0-0 7. 0-0 a5 8. d3 Na6 9. Nc3 Nc5 10. cxd5 Nxd5 11. Qd2 Nb6 12. Rac1 Ne6 13. Rfd1 a4 14. d4 axb3 15. axb3 Nc7 16. e4 Be6 17. Qc2 Qc8 18. Ne2 Bg4 19. Ne5 Bxe2 20. Qxe2 Ra2 21. Rc2 Nb5 22. Qe3 Rd8 23. f4 Nd7 24. Bf1 Nxe5 25. fxe5 Qg4 26. Be2 Qh3 27. Bxb5 cxb5 28. Rf1 Qd7 29. Rfc1 h5 30. d5 h4 31. Qf4 Qh3 32. Qxh4 Qxh4 33. gxh4 Bh6 34. Bd4 Rxc2 35. Rxc2 e6 36. d6 Bf4 37. Bb6 1-0

[Event "Cancun Camara Cup 11th"]
[Site "Cancun"]
[Date "2023.10.12"]
[Round "3"]
[White "Sandoval Mercado, Carlos"]
[Black "Mareco, Sandro"]
[Result "0-1"]
[ECO "E48"]
[WhiteElo "2387"]
[BlackElo "2606"]
[PlyCount "68"]
[EventDate "2023.10.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "MEX"]
[SourceTitle "Mega2024 Update 01"]
[Source "Chessbase"]
[SourceDate "2023.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.12"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 0-0 5. Bd3 d5 6. a3 Be7 7. b4 a5 8. b5 dxc4 9. Bxc4 b6 10. Nge2 Bb7 11. 0-0 Nbd7 12. Bb2 Bd6 13. Ng3 g6 14. f4 Nd5 15. Qf3 Qe7 16. Rae1 N7f6 17. e4 Nxf4 18. Bc1 N6h5 19. Qg4 Nxg3 20. hxg3 Nh5 21. e5 Bxa3 22. Bh6 Qb4 23. Bxf8 Rxf8 24. Bxe6 Qxc3 25. Rxf7 Rxf7 26. Rf1 Qd2 27. Bxf7+ Kg7 28. Bd5 Bxd5 29. Qd7+ Kh6 30. Qxd5 Qe3+ 31. Kh2 Qxg3+ 32. Kg1 Bc1 33. Qd7 Be3+ 34. Kh1 Qh4+ 0-1

[Event "Cancun Camara Cup 11th"]
[Site "Cancun"]
[Date "2023.10.11"]
[Round "1"]
[White "Muniz Guevara, Amanda Maria"]
[Black "Mareco, Sandro"]
[Result "1/2-1/2"]
[ECO "C71"]
[WhiteElo "2133"]
[BlackElo "2606"]
[PlyCount "92"]
[EventDate "2023.10.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "MEX"]
[SourceTitle "Mega2024 Update 01"]
[Source "Chessbase"]
[SourceDate "2023.11.12"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.12"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. c4 Nf6 6. Nc3 Bg4 7. h3 Bxf3 8. Bxc6+ bxc6 9. Qxf3 g6 10. 0-0 Bg7 11. d3 Nd7 12. Be3 0-0 13. Rad1 c5 14. Rb1 a5 15. Qd1 f5 16. f3 Nb6 17. b3 Bf6 18. a3 Bg5 19. Bf2 Bh4 20. Bxh4 Qxh4 21. Nb5 c6 22. Nc3 Nd7 23. b4 axb4 24. axb4 Ra3 25. Qc1 cxb4 26. Rxb4 Rfa8 27. Qd2 Qf4 28. Qxf4 exf4 29. Ne2 Rxd3 30. exf5 g5 31. Rb7 Nc5 32. Rc7 Rf8 33. Ra1 Rf7 34. Rc8+ Kg7 35. h4 h6 36. Raa8 Kf6 37. Rh8 Kxf5 38. Rxh6 Rf6 39. g4+ fxg3 40. Nxg3+ Ke5 41. Re8+ Re6 42. Rhxe6+ Nxe6 43. Ne4 gxh4 44. Ng5 Kf6 45. Nxe6 Kf7 46. Nc7 Rxf3 1/2-1/2

[Event "ESP-chT CECLUB Div2"]
[Site "Linares"]
[Date "2023.08.18"]
[Round "7.12"]
[White "Gonzalez Guedes, Iyan"]
[Black "Mareco, Sandro"]
[Result "0-1"]
[ECO "C54"]
[WhiteElo "2263"]
[BlackElo "2614"]
[PlyCount "98"]
[EventDate "2023.08.13"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "ESP"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]
[WhiteTeam "Vetusta Chess"]
[BlackTeam "Filantropos Equigoma"]
[WhiteTeamCountry "ESP"]
[BlackTeamCountry "ESP"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. 0-0 Nf6 5. d3 d6 6. c3 a5 7. Re1 0-0 8. h3 Ba7 9. Nbd2 Ne7 10. d4 Ng6 11. Bb3 Bd7 12. Nf1 a4 13. Bc2 b5 14. Ng3 Re8 15. Bg5 h6 16. Be3 c5 17. Qd2 exd4 18. cxd4 Bb6 19. Re2 Ba5 20. Qd1 Rc8 21. Rc1 Be6 22. Bd3 c4 23. Bb1 c3 24. d5 Bd7 25. Bd4 cxb2 26. Bxb2 Ne5 27. Nxe5 dxe5 28. Bd3 Bb4 29. Rxc8 Qxc8 30. Rc2 Qd8 31. Qf3 Bf8 32. Nf5 g6 33. Ne3 Bd6 34. g3 Kg7 35. Kh2 Qe7 36. Qe2 Rb8 37. Rc1 Ba3 38. f4 Bxb2 39. Qxb2 Re8 40. Rf1 a3 41. Qf2 exf4 42. Qxf4 Qe5 43. Qf3 Re7 44. Re1 Nh7 45. h4 Nf6 46. Re2 h5 47. Kg2 Nxe4 48. Bxe4 Qxe4 49. Nf5+ Bxf5 0-1

[Event "ESP-chT CECLUB Div2"]
[Site "Linares"]
[Date "2023.08.17"]
[Round "6.22"]
[White "Mareco, Sandro"]
[Black "Gomez Dominguez, Xabier"]
[Result "1-0"]
[ECO "B30"]
[WhiteElo "2614"]
[BlackElo "2159"]
[PlyCount "49"]
[EventDate "2023.08.13"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "ESP"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]
[WhiteTeam "Filantropos Equigoma"]
[BlackTeam "Circulo Ferrolano"]
[WhiteTeamCountry "ESP"]
[BlackTeamCountry "ESP"]

1. e4 c5 2. Nf3 g6 3. Bc4 Nc6 4. c3 Bg7 5. d4 cxd4 6. cxd4 d6 7. 0-0 Nf6 8. d5 Nb8 9. Qc2 0-0 10. h3 Nbd7 11. Nc3 a6 12. a4 Qc7 13. Qe2 Nc5 14. Bf4 a5 15. e5 Ne8 16. Nb5 Qb6 17. Bg5 f6 18. exf6 exf6 19. Be3 Bd7 20. Nfd4 Bxb5 21. axb5 Nc7 22. Ne6 N7xe6 23. dxe6 Rfe8 24. b4 axb4 25. e7+ 1-0

[Event "ESP-chT CECLUB Div2"]
[Site "Linares"]
[Date "2023.08.16"]
[Round "5.7"]
[White "Matamoros Franco, Carlos S"]
[Black "Mareco, Sandro"]
[Result "1-0"]
[ECO "E06"]
[WhiteElo "2441"]
[BlackElo "2614"]
[PlyCount "93"]
[EventDate "2023.08.13"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "ESP"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]
[WhiteTeam "Prodomasa Coin"]
[BlackTeam "Filantropos Equigoma"]
[WhiteTeamCountry "ESP"]
[BlackTeamCountry "ESP"]

1. Nf3 d5 2. g3 Nf6 3. Bg2 e6 4. c4 Be7 5. d4 0-0 6. Nc3 c6 7. 0-0 a5 8. b3 b6 9. Nd2 Ba6 10. a4 Ra7 11. Bb2 Rd7 12. Qc2 dxc4 13. Nxc4 Rxd4 14. Ne4 Rd7 15. Ng5 Bxc4 16. bxc4 h6 17. Nf3 Qc7 18. Ne5 Rdd8 19. Qc3 Rc8 20. Rab1 Rfd8 21. Ba1 Bb4 22. Qf3 Qe7 23. h4 Nfd7 24. Ng4 f5 25. Nh2 Bd6 26. Qb3 Na6 27. Nf3 Nb4 28. Nd4 Nc5 29. Qe3 Qf7 30. Rxb4 f4 31. Qf3 axb4 32. Nxc6 Rf8 33. Rd1 Qc7 34. Qg4 Rf7 35. gxf4 Bxf4 36. Kh1 b3 37. e3 Bd6 38. f4 Re8 39. Qg6 Bxf4 40. Bxg7 Rxg7 41. Qxe8+ Kh7 42. Nd8 Rg4 43. Be4+ Nxe4 44. Rd7+ Qxd7 45. Qxd7+ Rg7 46. Qd3 b2 47. Nxe6 1-0

[Event "ESP-chT CECLUB Div2"]
[Site "Linares"]
[Date "2023.08.15"]
[Round "4.2"]
[White "Gascon del Nogal, Jose Rafael"]
[Black "Mareco, Sandro"]
[Result "1-0"]
[ECO "A14"]
[WhiteElo "2468"]
[BlackElo "2614"]
[PlyCount "45"]
[EventDate "2023.08.13"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "ESP"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]
[WhiteTeam "Manises Eva"]
[BlackTeam "Filantropos Equigoma"]
[WhiteTeamCountry "ESP"]
[BlackTeamCountry "ESP"]

1. Nf3 d5 2. g3 Nf6 3. Bg2 e6 4. c4 Be7 5. 0-0 0-0 6. b3 d4 7. e3 c5 8. exd4 cxd4 9. Ne5 Nbd7 10. Nxd7 Nxd7 11. Re1 Re8 12. d3 e5 13. Ba3 Bxa3 14. Nxa3 a5 15. c5 Nxc5 16. Rc1 Na6 17. Nc4 Nb4 18. Qd2 Ra6 19. Rxe5 Rxe5 20. Nxe5 Re6 21. Bh3 f6 22. a3 Na6 23. Qxa5 1-0

[Event "ESP-chT CECLUB Div2"]
[Site "Linares"]
[Date "2023.08.15"]
[Round "3.2"]
[White "Mareco, Sandro"]
[Black "Garcia Ramos, Daniel"]
[Result "1-0"]
[ECO "A13"]
[WhiteElo "2614"]
[BlackElo "2468"]
[PlyCount "87"]
[EventDate "2023.08.13"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "ESP"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]
[WhiteTeam "Filantropos Equigoma"]
[BlackTeam "Colon Sabadell Chessy"]
[WhiteTeamCountry "ESP"]
[BlackTeamCountry "ESP"]

1. c4 e6 2. Nf3 d5 3. g3 d4 4. Bg2 c5 5. e3 Nc6 6. exd4 cxd4 7. d3 Bd6 8. 0-0 Nge7 9. Re1 0-0 10. Nbd2 a5 11. a3 Ng6 12. Rb1 h6 13. Qc2 Be7 14. h4 f5 15. h5 Nh8 16. Nh2 Qe8 17. Qd1 Kh7 18. Ndf1 g5 19. g4 Qf7 20. Ng3 Bd7 21. Bd2 Qf6 22. Qc2 Nf7 23. b4 axb4 24. axb4 Ra3 25. Rb3 Rfa8 26. b5 Nce5 27. Bc1 Rxb3 28. Qxb3 Nd8 29. Bb2 Bc5 30. Ra1 Rxa1+ 31. Bxa1 b6 32. Ne2 fxg4 33. Bxd4 Bxd4 34. Nxd4 Qf4 35. Qc3 g3 36. Be4+ Kg8 37. fxg3 Qxg3+ 38. Kh1 Ng4 39. Nxg4 Qxg4 40. Nf3 Qxh5+ 41. Kg1 Qg4+ 42. Kf2 Qf4 43. Qd4 g4 44. Bh7+ 1-0

[Event "ESP-chT CECLUB Div2"]
[Site "Linares"]
[Date "2023.08.14"]
[Round "2.2"]
[White "Korneev, Svyatoslav"]
[Black "Mareco, Sandro"]
[Result "0-1"]
[ECO "A13"]
[WhiteElo "2223"]
[BlackElo "2614"]
[PlyCount "58"]
[EventDate "2023.08.13"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "ESP"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]
[WhiteTeam "Agora Megaescacs"]
[BlackTeam "Filantropos Equigoma"]
[WhiteTeamCountry "ESP"]
[BlackTeamCountry "ESP"]

1. c4 e6 2. Nf3 d5 3. e3 Nf6 4. b3 Bd6 5. Bb2 0-0 6. Nc3 a6 7. g3 b6 8. Bg2 Bb7 9. cxd5 exd5 10. d4 Nbd7 11. 0-0 Re8 12. Nh4 g6 13. a3 Qe7 14. Bf3 Ne4 15. b4 Ndf6 16. Qe1 Qd7 17. Be2 Qh3 18. Bf3 Qd7 19. Be2 h5 20. f3 Nxg3 21. hxg3 Qh3 22. f4 Rxe3 23. Nf3 Ne4 24. Nd1 Nxg3 25. Kf2 Rxe2+ 26. Qxe2 Nxe2 27. Kxe2 Bxf4 28. Ne5 Bxe5 29. dxe5 d4 0-1

[Event "ESP-chT CECLUB Div2"]
[Site "Linares"]
[Date "2023.08.13"]
[Round "1.7"]
[White "Mareco, Sandro"]
[Black "Castro Quijano, Eduardo"]
[Result "1-0"]
[ECO "E05"]
[WhiteElo "2614"]
[BlackElo "2108"]
[PlyCount "59"]
[EventDate "2023.08.13"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "ESP"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]
[WhiteTeam "Filantropos Equigoma"]
[BlackTeam "Antonio Rico"]
[WhiteTeamCountry "ESP"]
[BlackTeamCountry "ESP"]

1. Nf3 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Be7 5. 0-0 0-0 6. d4 dxc4 7. Qc2 b6 8. Bg5 Nd5 9. Bxe7 Qxe7 10. Qxc4 Bb7 11. Nc3 c5 12. dxc5 Nxc3 13. Qxc3 Rc8 14. b4 bxc5 15. b5 Nd7 16. a4 a6 17. Rfc1 axb5 18. axb5 Bd5 19. Nd2 Bxg2 20. Kxg2 Nb6 21. Rxa8 Qb7+ 22. Qf3 Qxa8 23. Qxa8 Nxa8 24. Ne4 Nb6 25. Rxc5 Rxc5 26. Nxc5 Kf8 27. Kf3 Ke7 28. Ke4 Kd6 29. Nd3 f6 30. f4 1-0

[Event "American Continental 17th"]
[Site "Juan Dolio"]
[Date "2023.05.23"]
[Round "11"]
[White "Mareco, Sandro"]
[Black "Miranda Mesa, Elier"]
[Result "1/2-1/2"]
[ECO "B12"]
[WhiteElo "2633"]
[BlackElo "2516"]
[PlyCount "67"]
[EventDate "2023.05.15"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "DOM"]
[SourceTitle "CBM 214 Extra"]
[Source "ChessBase"]
[SourceDate "2023.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.07.31"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nf3 e6 5. Be2 Ne7 6. 0-0 c5 7. c4 Nbc6 8. Na3 a6 9. cxd5 Nxd5 10. Nc4 h6 11. a3 Be7 12. Re1 0-0 13. Bd3 Bg4 14. h3 Bh5 15. g4 Bg6 16. Bf1 b5 17. Ne3 Nxe3 18. Bxe3 cxd4 19. Bxd4 Nxd4 20. Qxd4 Rc8 21. b4 Qxd4 22. Nxd4 Rfd8 23. Red1 Rc7 24. Be2 Rc3 25. Bf1 Bg5 26. Bg2 Rc4 27. Nc6 Rxd1+ 28. Rxd1 Rc3 29. Ra1 Bf4 30. Ne7+ Kh7 31. Nxg6 Kxg6 32. Bb7 Rc1+ 33. Rxc1 Bxc1 34. Bxa6 1/2-1/2

[Event "American Continental 17th"]
[Site "Juan Dolio"]
[Date "2023.05.22"]
[Round "10"]
[White "Johnson, Joshua"]
[Black "Mareco, Sandro"]
[Result "1/2-1/2"]
[ECO "C58"]
[WhiteElo "2249"]
[BlackElo "2633"]
[PlyCount "135"]
[EventDate "2023.05.15"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "DOM"]
[SourceTitle "CBM 214 Extra"]
[Source "ChessBase"]
[SourceDate "2023.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.07.31"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 d5 5. exd5 Na5 6. Bb5+ c6 7. dxc6 bxc6 8. Bd3 Nd5 9. h4 h6 10. Qh5 Qf6 11. Ne4 Qe6 12. Ng5 Qf6 13. Ne4 Qe7 14. Be2 g6 15. Qf3 Bg7 16. Qa3 Nb7 17. Qxe7+ Kxe7 18. b3 f5 19. Ba3+ Kf7 20. Nec3 e4 21. Nxd5 cxd5 22. Nc3 d4 23. Bc4+ Be6 24. Bxe6+ Kxe6 25. Ne2 Rac8 26. Bb2 Rhd8 27. Rc1 Be5 28. f3 Nc5 29. fxe4 fxe4 30. 0-0 g5 31. Ba1 gxh4 32. c3 Nd3 33. Rcd1 dxc3 34. dxc3 Rg8 35. Kh1 Rg4 36. c4 Rd8 37. Rb1 Rdg8 38. Bxe5 Kxe5 39. Rg1 e3 40. Kh2 Nf2 41. Nc3 Rg3 42. Ne2 R3g5 43. Rbc1 Rh5 44. Rc3 Ke4 45. c5 h3 46. Rc4+ Ke5 47. g4 Rhg5 48. Rg3 Nxg4+ 49. Kxh3 Rh5+ 50. Kg2 Rh2+ 51. Kf1 h5 52. c6 Rf8+ 53. Ke1 Rff2 54. Ng1 Kd6 55. c7 Ne5 56. Rxe3 Nxc4 57. c8Q Nxe3 58. Qd8+ Kc5 59. Qc7+ Kd5 60. Qb7+ Kd6 61. Qa6+ Ke5 62. Qb5+ Ke4 63. Qb4+ Kd3 64. Qb5+ Ke4 65. Qb4+ Kd3 66. Qb5+ Ke4 67. Qb4+ Kd3 68. Qb5+ 1/2-1/2

[Event "American Continental 17th"]
[Site "Juan Dolio"]
[Date "2023.05.21"]
[Round "9"]
[White "Mareco, Sandro"]
[Black "Latorre Lopez Moreira, Luis Matias"]
[Result "1-0"]
[ECO "A13"]
[WhiteElo "2633"]
[BlackElo "2280"]
[PlyCount "51"]
[EventDate "2023.05.15"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "DOM"]
[SourceTitle "CBM 214 Extra"]
[Source "ChessBase"]
[SourceDate "2023.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.07.31"]
[SourceQuality "1"]

1. Nf3 e6 2. c4 d5 3. g3 Be7 4. Bg2 Nd7 5. 0-0 dxc4 6. Qc2 c5 7. Na3 Rb8 8. Nxc4 b5 9. Nce5 Bb7 10. d4 Ngf6 11. Nxd7 Nxd7 12. dxc5 Bxc5 13. Bg5 Qb6 14. Rad1 Rc8 15. Qd2 Nf6 16. Ne5 Qc7 17. Bxb7 Qxb7 18. Bxf6 gxf6 19. Nd7 Be7 20. Qh6 f5 21. Qg7 Rf8 22. Nxf8 Bxf8 23. Qxh7 Qe4 24. e3 e5 25. Rc1 Rc2 26. Qh8 1-0

[Event "American Continental 17th"]
[Site "Juan Dolio"]
[Date "2023.05.20"]
[Round "8"]
[White "Zambrana, Oswaldo"]
[Black "Mareco, Sandro"]
[Result "1-0"]
[ECO "C50"]
[WhiteElo "2369"]
[BlackElo "2633"]
[PlyCount "85"]
[EventDate "2023.05.15"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "DOM"]
[SourceTitle "CBM 214 Extra"]
[Source "ChessBase"]
[SourceDate "2023.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.07.31"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. d3 Nf6 5. 0-0 a5 6. a4 d6 7. c3 h6 8. Na3 0-0 9. h3 Ne7 10. Nc2 Ba7 11. Ne3 c6 12. Ba2 Ng6 13. Nf5 d5 14. Qc2 Be6 15. Re1 Qd7 16. g4 Rfe8 17. Be3 Bxe3 18. fxe3 Rad8 19. Rad1 Qc7 20. Bb1 Qb6 21. Qf2 dxe4 22. dxe4 Qb3 23. Qc2 Rxd1 24. Rxd1 Nxe4 25. Nd2 Qxc2 26. Bxc2 Nxd2 27. Rxd2 Rb8 28. Kf2 Kf8 29. Nd6 Ne7 30. Nxb7 Nd5 31. Nxa5 Rxb2 32. Nxc6 f6 33. Ke1 Rb6 34. Nd8 Bg8 35. a5 Rb8 36. Nc6 Rc8 37. Nb4 Nxe3 38. Be4 Nc4 39. a6 Nxd2 40. Kxd2 Bc4 41. a7 Bf1 42. h4 Bh3 43. Na6 1-0

[Event "American Continental 17th"]
[Site "Juan Dolio"]
[Date "2023.05.19"]
[Round "7"]
[White "Mareco, Sandro"]
[Black "Corrales Jimenez, Fidel"]
[Result "1/2-1/2"]
[ECO "E60"]
[WhiteElo "2633"]
[BlackElo "2489"]
[PlyCount "56"]
[EventDate "2023.05.15"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "DOM"]
[SourceTitle "CBM 214 Extra"]
[Source "ChessBase"]
[SourceDate "2023.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.07.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. e3 0-0 5. Be2 d5 6. cxd5 Nxd5 7. e4 Nb6 8. Be3 c5 9. Nc3 cxd4 10. Nxd4 Nc6 11. Nxc6 bxc6 12. Qc2 Be6 13. Rd1 Qc7 14. b3 Rfd8 15. 0-0 Rxd1 16. Rxd1 Rd8 17. Rc1 Qd6 18. Nb1 Qe5 19. Nd2 Qa5 20. h3 Bd4 21. Bxd4 Rxd4 22. Nf3 Rd8 23. Qb2 c5 24. Rc2 Qb4 25. Bf1 Qxe4 26. Rxc5 Qf4 27. Qc1 Qxc1 28. Rxc1 f6 1/2-1/2

[Event "American Continental 17th"]
[Site "Juan Dolio"]
[Date "2023.05.19"]
[Round "6"]
[White "Stearman, Josiah P"]
[Black "Mareco, Sandro"]
[Result "1/2-1/2"]
[ECO "B90"]
[WhiteElo "2385"]
[BlackElo "2633"]
[PlyCount "51"]
[EventDate "2023.05.15"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "DOM"]
[SourceTitle "CBM 214 Extra"]
[Source "ChessBase"]
[SourceDate "2023.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.07.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bd3 e5 7. Nde2 Be7 8. 0-0 0-0 9. Ng3 Bg4 10. f3 Be6 11. Nd5 Nxd5 12. exd5 Bxd5 13. Bxh7+ Kxh7 14. Qxd5 Qb6+ 15. Kh1 Qb5 16. Qd1 d5 17. f4 e4 18. Be3 Rh8 19. Nf5 Bf8 20. Bd4 Kg8 21. Qg4 Rh7 22. Nxg7 Bxg7 23. Qc8+ Bf8 24. Qg4+ Bg7 25. Qc8+ Bf8 26. Qg4+ 1/2-1/2

[Event "American Continental 17th"]
[Site "Juan Dolio"]
[Date "2023.05.18"]
[Round "5"]
[White "Mareco, Sandro"]
[Black "Escalante Ramirez, Brian Sebastian"]
[Result "1/2-1/2"]
[ECO "D37"]
[WhiteElo "2633"]
[BlackElo "2489"]
[PlyCount "45"]
[EventDate "2023.05.15"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "DOM"]
[SourceTitle "CBM 214 Extra"]
[Source "ChessBase"]
[SourceDate "2023.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.07.31"]
[SourceQuality "1"]

1. d4 e6 2. Nf3 Nf6 3. c4 a6 4. Nc3 d5 5. cxd5 exd5 6. Bg5 Be6 7. e3 Nbd7 8. h3 c6 9. Bd3 Bd6 10. Bf4 Qb8 11. Qd2 0-0 12. 0-0 Nh5 13. Bxd6 Qxd6 14. Rfe1 h6 15. Rac1 Rae8 16. Na4 Nhf6 17. Nc5 Nxc5 18. dxc5 Qc7 19. Nd4 Bd7 20. f3 Re5 21. b4 Rfe8 22. a4 Qd8 23. b5 1/2-1/2

[Event "American Continental 17th"]
[Site "Juan Dolio"]
[Date "2023.05.16"]
[Round "2"]
[White "Araujo Sanchez, Josue"]
[Black "Mareco, Sandro"]
[Result "1/2-1/2"]
[ECO "A22"]
[WhiteElo "2303"]
[BlackElo "2633"]
[PlyCount "60"]
[EventDate "2023.05.15"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "DOM"]
[SourceTitle "CBM 214 Extra"]
[Source "ChessBase"]
[SourceDate "2023.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.07.31"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 e5 3. g3 Bb4 4. Bg2 0-0 5. Qb3 a5 6. d3 Nc6 7. a3 Bc5 8. e3 d6 9. Nge2 Ne7 10. 0-0 c6 11. d4 Ba7 12. h3 Rb8 13. Rd1 Qc7 14. e4 Be6 15. d5 Bc8 16. Bg5 Ne8 17. Rac1 h6 18. Be3 Bxe3 19. fxe3 Bd7 20. Rd2 Kh8 21. Na4 c5 22. Nb6 f5 23. Nxd7 Qxd7 24. Rf1 Nf6 25. exf5 Nxf5 26. g4 Nh4 27. Nc3 Qe7 28. Rdf2 b6 29. Qc2 Rbe8 30. Be4 Kg8 1/2-1/2

[Event "American Continental 17th"]
[Site "Juan Dolio"]
[Date "2023.05.16"]
[Round "3"]
[White "Mareco, Sandro"]
[Black "Abreu Jean, Carlos Paul"]
[Result "1-0"]
[ECO "B90"]
[WhiteElo "2633"]
[BlackElo "2357"]
[PlyCount "75"]
[EventDate "2023.05.15"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "DOM"]
[SourceTitle "CBM 214 Extra"]
[Source "ChessBase"]
[SourceDate "2023.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.07.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e5 7. Nb3 Be6 8. h3 h6 9. Qf3 Qc7 10. 0-0-0 Nbd7 11. Kb1 Be7 12. Nd5 Bxd5 13. exd5 a5 14. a4 Rc8 15. c3 0-0 16. Bb5 Nb6 17. Rhe1 Nc4 18. Bc1 Nh7 19. Qe2 Bd8 20. g3 Nf6 21. f4 Nd7 22. Rf1 Bf6 23. g4 Rfe8 24. g5 Na3+ 25. bxa3 exf4 26. Qc2 hxg5 27. c4 Re7 28. h4 gxh4 29. Rxf4 Qd8 30. Rg1 Rc7 31. Qf2 Kf8 32. Rxh4 Re8 33. Rh8+ Ke7 34. Re1+ Be5 35. Rh7 Rg8 36. Bg5+ f6 37. Be3 Nc5 38. Nxc5 1-0

[Event "American Continental 17th"]
[Site "Juan Dolio"]
[Date "2023.05.15"]
[Round "1"]
[White "Mareco, Sandro"]
[Black "Galvez Dastin, Eduardo Francisco"]
[Result "1-0"]
[ECO "D45"]
[WhiteElo "2633"]
[BlackElo "2141"]
[PlyCount "79"]
[EventDate "2023.05.15"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "DOM"]
[SourceTitle "CBM 214 Extra"]
[Source "ChessBase"]
[SourceDate "2023.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.07.31"]
[SourceQuality "1"]

1. c4 c6 2. Nf3 d5 3. e3 Nf6 4. Nc3 e6 5. d4 Nbd7 6. Qc2 b6 7. Bd3 Bb7 8. 0-0 dxc4 9. Bxc4 a6 10. Rd1 b5 11. Be2 c5 12. a3 cxd4 13. Nxd4 Rc8 14. Bf3 Qb6 15. Bxb7 Qxb7 16. Qe2 Be7 17. e4 Ne5 18. Bf4 Nc4 19. e5 Nd7 20. Rd3 g5 21. Bg3 h5 22. h3 b4 23. axb4 Qxb4 24. b3 Na5 25. Ne4 Nc5 26. Nxc5 Qxc5 27. Rad1 Nc6 28. Nf3 Qb5 29. Qe4 Nb4 30. Rd6 h4 31. Bh2 Nd5 32. Nd4 Nc3 33. Nxb5 Nxe4 34. Rxa6 0-0 35. Nd6 Rfd8 36. f3 Bxd6 37. exd6 Nc5 38. Ra5 f6 39. b4 Nb7 40. d7 1-0

[Event "Mexican op 68th"]
[Site "Mexico City"]
[Date "2023.04.09"]
[Round "9"]
[White "Mareco, Sandro"]
[Black "Lopez Gonzalez, Abel Fabian"]
[Result "1-0"]
[ECO "D28"]
[WhiteElo "2624"]
[BlackElo "2381"]
[PlyCount "79"]
[EventDate "2023.04.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "MEX"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]

1. c4 e6 2. Nf3 d5 3. d4 dxc4 4. e3 Nf6 5. Bxc4 c5 6. 0-0 a6 7. Qe2 b5 8. Bd3 Nbd7 9. a4 c4 10. Bc2 Bb7 11. e4 Be7 12. d5 exd5 13. e5 Ne4 14. Nc3 Ndc5 15. axb5 Nxc3 16. bxc3 axb5 17. Rxa8 Qxa8 18. Nd4 Ne6 19. Be3 Qa5 20. Nxe6 fxe6 21. Qg4 Kd7 22. Qxg7 Qa8 23. Bd4 h5 24. Qg3 Rg8 25. Qe3 Qa2 26. Bd1 b4 27. cxb4 Bxb4 28. Qh6 Be7 29. Bxh5 Ra8 30. Bf7 Ra6 31. Qh7 Qd2 32. Be3 Qd3 33. Qg8 Bb4 34. Bg5 Ra8 35. Bxe6+ Kc6 36. Qf7 Kb6 37. Qd7 Ra2 38. Be3+ Ka6 39. Qc7 Ba5 40. Qd6+ 1-0

[Event "Mexican op 68th"]
[Site "Mexico City"]
[Date "2023.04.08"]
[Round "7"]
[White "Mareco, Sandro"]
[Black "Henriquez Villagra, Cristobal"]
[Result "1/2-1/2"]
[ECO "D36"]
[WhiteElo "2624"]
[BlackElo "2628"]
[PlyCount "53"]
[EventDate "2023.04.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "MEX"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]

1. Nf3 d5 2. d4 Nf6 3. c4 e6 4. Nc3 c6 5. cxd5 exd5 6. Bg5 Be7 7. Qc2 Nbd7 8. e3 Nh5 9. Bxe7 Qxe7 10. 0-0-0 Nb6 11. Bd3 g6 12. Kb1 Bg4 13. Rc1 Bxf3 14. gxf3 Ng7 15. h4 Ne6 16. h5 0-0-0 17. f4 Kb8 18. f5 gxf5 19. Bxf5 h6 20. Ne2 Ng5 21. Bd3 Nc8 22. Ng3 Nd6 23. Ka1 Rhg8 24. a3 Nge4 25. Bxe4 dxe4 26. Ne2 Rg5 27. Nf4 1/2-1/2

[Event "Mexican op 68th"]
[Site "Mexico City"]
[Date "2023.04.08"]
[Round "8"]
[White "Quesada Perez, Luis Ernesto"]
[Black "Mareco, Sandro"]
[Result "1/2-1/2"]
[ECO "E35"]
[WhiteElo "2562"]
[BlackElo "2624"]
[PlyCount "63"]
[EventDate "2023.04.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "MEX"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 d5 5. cxd5 exd5 6. Bg5 h6 7. Bh4 0-0 8. e3 c5 9. dxc5 Be6 10. Nf3 Nbd7 11. a3 Bxc5 12. Bd3 Rc8 13. 0-0 Be7 14. Nd4 Nc5 15. Rfd1 Nfe4 16. Bxe7 Qxe7 17. Rac1 Nxd3 18. Qxd3 Nxc3 19. Rxc3 Rxc3 20. Qxc3 Rc8 21. Qd2 Qc5 22. h3 a6 23. Ne2 Qc2 24. Nc3 Qb3 25. Rc1 Rc4 26. Ne2 Qb6 27. Nd4 Qc5 28. Rc2 Bf5 29. Rc3 Rxc3 30. bxc3 Be4 31. Qb2 Qe7 32. f3 1/2-1/2

[Event "Mexican op 68th"]
[Site "Mexico City"]
[Date "2023.04.07"]
[Round "5"]
[White "Mareco, Sandro"]
[Black "Vidyarthi, Vyom"]
[Result "1-0"]
[ECO "C54"]
[WhiteElo "2624"]
[BlackElo "2432"]
[PlyCount "133"]
[EventDate "2023.04.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "MEX"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. d3 Nf6 5. c3 d6 6. a4 a6 7. 0-0 h6 8. Re1 0-0 9. h3 Be6 10. Bxe6 fxe6 11. b4 Ba7 12. Ra2 Qe8 13. Be3 Bxe3 14. Rxe3 Qg6 15. Kh2 Qh5 16. Kg1 Ne7 17. Qb3 Qf7 18. Nbd2 g5 19. d4 exd4 20. Nxd4 e5 21. Ne6 Nfd5 22. Nxf8 Nxe3 23. Ne6 Nd1 24. Qxd1 Qxe6 25. Rb2 Ng6 26. Qg4 Qxg4 27. hxg4 c6 28. Nc4 d5 29. Nd6 b5 30. exd5 Rd8 31. Nf5 cxd5 32. axb5 axb5 33. Nxh6+ Kf8 34. Nf5 d4 35. Rd2 Ne7 36. f3 Nc6 37. Rc2 dxc3 38. Rxc3 Nxb4 39. Rb3 Rd1+ 40. Kh2 Nd5 41. Rxb5 Rd2 42. Rb8+ Kf7 43. Rd8 Ne3 44. Rxd2 Nf1+ 45. Kg1 Nxd2 46. Ng3 Nb3 47. Ne4 Kg6 48. Kf2 Nd4 49. Nc5 Kf6 50. Ke3 Nb5 51. Ke4 Nc3+ 52. Kd3 Nd5 53. g3 Nb6 54. Ke4 Nc4 55. Kd5 Ne3+ 56. Kc6 Nc2 57. Kd6 Nd4 58. Nd7+ Kg7 59. Nxe5 Ne2 60. Ke7 Nxg3 61. Ke6 Ne2 62. Kf5 Nd4+ 63. Kxg5 Ne6+ 64. Kf5 Nd4+ 65. Ke4 Ne6 66. f4 Kf6 67. Nd3 1-0

[Event "Mexican op 68th"]
[Site "Mexico City"]
[Date "2023.04.07"]
[Round "6"]
[White "Martinez Alcantara, Jose Eduardo"]
[Black "Mareco, Sandro"]
[Result "1/2-1/2"]
[ECO "C77"]
[WhiteElo "2607"]
[BlackElo "2624"]
[PlyCount "82"]
[EventDate "2023.04.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "MEX"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. Nc3 Bc5 6. d3 d6 7. Bxc6+ bxc6 8. Be3 Bxe3 9. fxe3 0-0 10. 0-0 Re8 11. Qe1 d5 12. Qg3 Nh5 13. Qf2 Nf6 14. Qg3 Nh5 15. Qg5 Qxg5 16. Nxg5 Nf6 17. h3 a5 18. Nf3 Rb8 19. b3 dxe4 20. dxe4 c5 21. Nd2 Bb7 22. Rf2 Re6 23. Na4 Nd7 24. c4 Rd6 25. Re2 Kf8 26. Rc1 Bc6 27. Nc3 a4 28. Nd5 Rb7 29. Rf2 axb3 30. axb3 Bxd5 31. exd5 Ra6 32. Rcf1 f6 33. g4 Rba7 34. g5 Ra1 35. gxf6 Rxf1+ 36. Kxf1 Ra1+ 37. Kg2 gxf6 38. Ne4 Kf7 39. Nc3 Nb6 40. Ne4 Nd7 41. Nc3 Nb6 1/2-1/2

[Event "Mexican op 68th"]
[Site "Mexico City"]
[Date "2023.04.06"]
[Round "4"]
[White "Gutierrez Delgado, Yusuan Alfredo"]
[Black "Mareco, Sandro"]
[Result "0-1"]
[ECO "C78"]
[WhiteElo "2322"]
[BlackElo "2624"]
[PlyCount "92"]
[EventDate "2023.04.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "MEX"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Bc5 6. c3 0-0 7. d4 Ba7 8. Re1 d6 9. h3 Bd7 10. Be3 Re8 11. Nbd2 h6 12. Bb3 b5 13. a4 Qb8 14. axb5 axb5 15. Qc2 Qb7 16. Nf1 exd4 17. cxd4 Nxe4 18. Rec1 Bb6 19. Rxa8 Qxa8 20. Bd5 Nb4 21. Bxa8 Nxc2 22. Bxe4 Nxe3 23. Nxe3 Rxe4 24. Nd5 Bxd4 25. Rxc7 Be6 26. Nc3 Bxc3 27. bxc3 b4 28. cxb4 Rxb4 29. Rc2 Bd5 30. Nd2 Kf8 31. f3 Ke7 32. Kf2 Kd7 33. Nf1 Be6 34. Ng3 d5 35. Ne2 Kd6 36. Ke3 Rb3+ 37. Rc3 Rb2 38. g4 g5 39. Nd4 Rh2 40. Rc2 Rxh3 41. Rg2 Ke5 42. Rg1 Bd7 43. Kd3 Kf4 44. Rc1 Bxg4 45. Rc7 Bxf3 46. Rxf7+ Kg4 0-1

[Event "Mexican op 68th"]
[Site "Mexico City"]
[Date "2023.04.06"]
[Round "3"]
[White "Mareco, Sandro"]
[Black "Galaviz Medina, Sion Radamantys"]
[Result "1-0"]
[ECO "D24"]
[WhiteElo "2624"]
[BlackElo "2378"]
[PlyCount "68"]
[EventDate "2023.04.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "MEX"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 dxc4 5. e4 b5 6. e5 Nd5 7. Nxb5 Nb6 8. Be2 Nc6 9. 0-0 Be7 10. Be3 0-0 11. Qc1 Ba6 12. Nc3 Nb4 13. Rd1 Rb8 14. a3 N4d5 15. b4 Nxc3 16. Qxc3 Bb5 17. Qc1 Qd7 18. Nd2 Qc6 19. Nb1 Qa8 20. Nc3 Bc6 21. f3 a5 22. Bg5 Bxg5 23. Qxg5 Na4 24. Qd2 axb4 25. axb4 Rxb4 26. Rdc1 Rd8 27. Bd1 Rdb8 28. Ra3 Rb2 29. Rc2 R2b3 30. Rca2 R8b4 31. Nxa4 Rxa4 32. Rxa4 Bxa4 33. Bxb3 cxb3 34. Ra3 Qc6 1-0

[Event "Mexican op 68th"]
[Site "Mexico City"]
[Date "2023.04.05"]
[Round "2"]
[White "Benitez Lozano, Javier"]
[Black "Mareco, Sandro"]
[Result "0-1"]
[ECO "D36"]
[WhiteElo "2264"]
[BlackElo "2624"]
[PlyCount "100"]
[EventDate "2023.04.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "MEX"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. cxd5 exd5 5. Bg5 c6 6. e3 h6 7. Bh4 Be7 8. Bd3 0-0 9. Qc2 Re8 10. Nf3 Ne4 11. Bxe4 Bxh4 12. Bh7+ Kh8 13. Ne5 Qe7 14. 0-0 Bf6 15. f4 Nd7 16. Bd3 Bxe5 17. fxe5 f6 18. Bg6 Rf8 19. e4 fxe5 20. exd5 exd4 21. dxc6 bxc6 22. Ne4 Ba6 23. Rxf8+ Nxf8 24. Ng3 d3 25. Qxc6 Bb7 26. Nf5 Qe4 27. Qxe4 Bxe4 28. Re1 d2 29. Rd1 Nxg6 30. Nd6 Bd5 31. Rxd2 Bxa2 32. b4 Bg8 33. Nf5 Rf8 34. Ng3 Ne5 35. h3 Rb8 36. Rd4 Rb7 37. Re4 Nc6 38. Nf5 Nxb4 39. Re8 Kh7 40. g4 a5 41. Ra8 Nc6 42. Ra6 Bd5 43. Ne3 Be4 44. Nc4 Rb3 45. Nd2 Rg3+ 46. Kf2 Rg2+ 47. Ke3 Bd5 48. Nf1 Rg1 49. Nd2 Rg3+ 50. Kf4 Rd3 0-1

[Event "Mexican op 68th"]
[Site "Mexico City"]
[Date "2023.04.04"]
[Round "1"]
[White "Mareco, Sandro"]
[Black "Ruiz Gonzalez, Guillermo"]
[Result "1-0"]
[ECO "A09"]
[WhiteElo "2624"]
[BlackElo "1969"]
[PlyCount "105"]
[EventDate "2023.04.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "MEX"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]

1. Nf3 d5 2. c4 d4 3. b4 b6 4. e3 dxe3 5. fxe3 e5 6. Nc3 Bb7 7. Qa4+ Bc6 8. Qb3 Bxf3 9. gxf3 Qh4+ 10. Ke2 Nc6 11. Nd5 0-0-0 12. Bb2 Nf6 13. a3 e4 14. Bg2 exf3+ 15. Bxf3 Ne4 16. Raf1 Bd6 17. d3 f5 18. Qc2 Rhe8 19. dxe4 fxe4 20. Bg2 Bxh2 21. Kd1 Ne5 22. Bxe5 Rxe5 23. Kc1 c6 24. Nf4 Kb8 25. Bxe4 Qe7 26. Qxh2 Rxe4 27. Nd5+ Qd6 28. Qxd6+ Rxd6 29. Rf8+ Kb7 30. Rf7+ Kc8 31. Nc3 Rxe3 32. Kc2 Rdd3 33. Nd1 Rh3 34. Rxh3 Rxh3 35. Rxg7 Rxa3 36. Nc3 a5 37. b5 cxb5 38. cxb5 Ra1 39. Nd5 Rh1 40. Nxb6+ Kb8 41. Nc4 Rh5 42. Nd6 Rc5+ 43. Kb3 Rc7 44. Rxc7 Kxc7 45. Nf5 h5 46. Ka4 Kb6 47. Nh4 Kb7 48. Kxa5 Ka7 49. b6+ Kb7 50. Kb5 Kb8 51. Ka6 Ka8 52. Nf5 Kb8 53. Ne7 1-0

[Event "Chessable Masters Play In"]
[Site "Chess.com INT"]
[Date "2023.03.13"]
[Round "5"]
[White "Aditya, Mittal"]
[Black "Mareco, Sandro"]
[Result "1/2-1/2"]
[ECO "D38"]
[WhiteElo "2505"]
[BlackElo "2623"]
[PlyCount "106"]
[EventDate "2023.03.13"]
[EventType "swiss (rapid)"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Bb4 5. Qa4+ Nc6 6. e3 0-0 7. Qc2 Re8 8. Bd2 Bf8 9. Be2 b6 10. cxd5 exd5 11. a3 Ne7 12. b4 Bf5 13. Bd3 Bxd3 14. Qxd3 Ng6 15. 0-0 c6 16. Rfc1 Qd7 17. Ne2 Ne4 18. Ng3 Bd6 19. Rc2 Re6 20. Rac1 Ne7 21. Be1 b5 22. Nd2 Bxg3 23. hxg3 Nf5 24. Nb3 Rg6 25. Na5 Ne7 26. f3 Ng5 27. g4 h5 28. f4 Ne4 29. gxh5 Rh6 30. Qe2 Re8 31. g4 f5 32. g5 Re6 33. Bh4 Nd6 34. Nb3 Ne4 35. Nc5 Nxc5 36. bxc5 Nc8 37. Bf2 a5 38. Rb1 a4 39. Kg2 Qe7 40. Qf3 Qf7 41. Rcb2 Re4 42. Rh1 Ne7 43. Be1 Qe6 44. Bd2 Kh8 45. Kf2 Kg8 46. Rh3 Kh8 47. Ba5 Rc8 48. Rb1 Ng8 49. Rbh1 Qd7 50. Bb4 Rce8 51. Qd1 Qe7 52. Qd2 Qd7 53. Rg3 Qe7 1/2-1/2

[Event "Chessable Masters Play In"]
[Site "Chess.com INT"]
[Date "2023.03.13"]
[Round "4"]
[White "Gukesh, Dommaraju"]
[Black "Mareco, Sandro"]
[Result "1-0"]
[ECO "E51"]
[WhiteElo "2730"]
[BlackElo "2623"]
[PlyCount "59"]
[EventDate "2023.03.13"]
[EventType "swiss (rapid)"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Bb4 5. e3 0-0 6. Bd2 Re8 7. Rc1 a5 8. Bd3 Nbd7 9. 0-0 c6 10. a3 Bf8 11. cxd5 exd5 12. Qc2 Bd6 13. Rfe1 Nf8 14. h3 Bd7 15. e4 dxe4 16. Nxe4 Nxe4 17. Bxe4 h6 18. d5 c5 19. a4 b5 20. axb5 Bxb5 21. Bc3 a4 22. Nd2 Qh4 23. Bf3 Ng6 24. Ne4 Bf8 25. d6 Ne5 26. Bxe5 Rxe5 27. Nc3 Rxe1+ 28. Rxe1 Rb8 29. Nxb5 Rxb5 30. d7 1-0

[Event "Chessable Masters Play In"]
[Site "Chess.com INT"]
[Date "2023.03.13"]
[Round "3"]
[White "Mareco, Sandro"]
[Black "Darini, Pouria"]
[Result "1-0"]
[ECO "E11"]
[WhiteElo "2623"]
[BlackElo "2405"]
[PlyCount "101"]
[EventDate "2023.03.13"]
[EventType "swiss (rapid)"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 Bb4+ 5. Bd2 a5 6. Bg2 0-0 7. Qc2 c5 8. cxd5 cxd4 9. Nxd4 Qb6 10. e3 exd5 11. a3 Bc5 12. Bc3 Ne4 13. 0-0 Nc6 14. Nd2 Nxd4 15. exd4 Bxd4 16. Nxe4 dxe4 17. Bxe4 Bxc3 18. bxc3 g6 19. Rfb1 Qc5 20. a4 Ra6 21. Bxb7 Bxb7 22. Rxb7 Rc8 23. Rb3 Rac6 24. h4 h5 25. Re1 Qc4 26. Rb7 R6c7 27. Rxc7 Rxc7 28. Re3 Rb7 29. Kg2 Qc6+ 30. Qe4 Rc7 31. Qxc6 Rxc6 32. Re5 Rxc3 33. Rxa5 Ra3 34. Ra8+ Kg7 35. a5 f6 36. Ra7+ Kh6 37. a6 g5 38. hxg5+ fxg5 39. Ra8 Kg7 40. f4 h4 41. f5 Rxg3+ 42. Kh2 g4 43. a7 Rh3+ 44. Kg2 Rg3+ 45. Kf2 Rf3+ 46. Ke2 Ra3 47. f6+ Kxf6 48. Rf8+ Kg5 49. a8Q Rxa8 50. Rxa8 Kf4 51. Kf2 1-0

[Event "Chessable Masters Play In"]
[Site "Chess.com INT"]
[Date "2023.03.13"]
[Round "6"]
[White "Mareco, Sandro"]
[Black "Kosteniuk, Alexandra"]
[Result "0-1"]
[ECO "E04"]
[WhiteElo "2623"]
[BlackElo "2536"]
[PlyCount "60"]
[EventDate "2023.03.13"]
[EventType "swiss (rapid)"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 dxc4 5. Bg2 Nc6 6. 0-0 Rb8 7. Re1 Be7 8. e4 0-0 9. Nc3 b5 10. a3 Na5 11. Be3 Nb3 12. Rb1 Bb7 13. Ne5 a6 14. d5 Bc5 15. a4 Bxe3 16. Rxe3 b4 17. Na2 exd5 18. Nxb4 Qd6 19. Nec6 Bxc6 20. Nxa6 Rb6 21. e5 Qd7 22. exf6 Rxa6 23. Qh5 Bxa4 24. Re7 Qd6 25. Bxd5 Qxf6 26. Rbe1 g6 27. Qe2 Nd4 28. Qxc4 Bb3 29. Rxf7 Rxf7 30. Bxf7+ Kg7 0-1

[Event "Chessable Masters Play In"]
[Site "Chess.com INT"]
[Date "2023.03.13"]
[Round "9"]
[White "Mareco, Sandro"]
[Black "Lobanov, Sergei"]
[Result "0-1"]
[ECO "E05"]
[WhiteElo "2623"]
[BlackElo "2545"]
[PlyCount "80"]
[EventDate "2023.03.13"]
[EventType "swiss (rapid)"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 Be7 5. Bg2 0-0 6. 0-0 dxc4 7. Qc2 a6 8. a4 Nc6 9. Qxc4 Qd5 10. Nbd2 Rd8 11. e3 Qh5 12. h3 g5 13. Ne5 Nxe5 14. dxe5 Nd5 15. Ne4 b5 16. Qb3 Bd7 17. axb5 Bxb5 18. Re1 Rab8 19. Bd2 Qg6 20. Qc2 h5 21. Rec1 h4 22. g4 Qg7 23. f4 c5 24. Nxc5 Bxc5 25. Qxc5 Nxf4 26. exf4 Rxd2 27. Qe3 Rbd8 28. fxg5 Re2 29. Qf4 Qxe5 30. Qxe5 Rxe5 31. g6 fxg6 32. Rc7 Rd2 33. Rac1 Rd7 34. Rc8+ Kg7 35. Rb8 Re3 36. Rbc8 Rd2 37. R1c7+ Kf6 38. Rf8+ Kg5 39. Rc5+ e5 40. Bf1 Re1 0-1

[Event "Chessable Masters Play In"]
[Site "Chess.com INT"]
[Date "2023.03.13"]
[Round "7"]
[White "Mareco, Sandro"]
[Black "Rasulov, Vugar Ural Oglu"]
[Result "0-1"]
[ECO "A61"]
[WhiteElo "2623"]
[BlackElo "2516"]
[PlyCount "58"]
[EventDate "2023.03.13"]
[EventType "swiss (rapid)"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. d5 exd5 5. cxd5 d6 6. Nc3 g6 7. Bf4 a6 8. a4 Bg7 9. h3 0-0 10. e3 Ne8 11. Be2 Nd7 12. 0-0 Rb8 13. Re1 Qe7 14. Qc2 f5 15. Nd2 Ne5 16. Bh2 Nc7 17. a5 Bd7 18. Nc4 Nxc4 19. Bxc4 b5 20. axb6 Rxb6 21. b3 Bb5 22. Na4 Rbb8 23. Ra2 Bxc4 24. bxc4 f4 25. Qc1 f3 26. Nb2 Qg5 27. Bg3 Be5 28. Kh2 h5 29. Nd3 h4 0-1

[Event "Chessable Masters Play In"]
[Site "Chess.com INT"]
[Date "2023.03.13"]
[Round "2"]
[White "Mareco, Sandro"]
[Black "Salgado Lopez, Ivan"]
[Result "1-0"]
[ECO "E05"]
[WhiteElo "2623"]
[BlackElo "2591"]
[PlyCount "51"]
[EventDate "2023.03.13"]
[EventType "swiss (rapid)"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 Be7 5. Bg2 0-0 6. 0-0 dxc4 7. Qc2 a6 8. a4 Nc6 9. Qxc4 Qd5 10. Nbd2 Rd8 11. e3 Qxc4 12. Nxc4 a5 13. Bd2 Nd5 14. Rfc1 Ndb4 15. Nfe5 Nxe5 16. Nxe5 c6 17. Bxb4 Bxb4 18. Nd3 Be7 19. Nc5 Rb8 20. Rab1 f6 21. b4 axb4 22. Rxb4 e5 23. Bxc6 exd4 24. exd4 Bh3 25. Bxb7 Kf8 26. a5 1-0

[Event "Chessable Masters Play In"]
[Site "Chess.com INT"]
[Date "2023.03.13"]
[Round "8"]
[White "Nigmatov, Ortik"]
[Black "Mareco, Sandro"]
[Result "0-1"]
[ECO "C78"]
[WhiteElo "2473"]
[BlackElo "2623"]
[PlyCount "114"]
[EventDate "2023.03.13"]
[EventType "swiss (rapid)"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Bc5 6. c3 0-0 7. d4 Ba7 8. Re1 d6 9. Bxc6 bxc6 10. Bg5 Qe7 11. Nbd2 Qe6 12. Qa4 Bd7 13. Bxf6 Qxf6 14. d5 Rfb8 15. dxc6 Be8 16. Nc4 Rb5 17. Qc2 Bxc6 18. b4 Bd7 19. Ne3 Be6 20. a4 Rbb8 21. Rad1 Rb7 22. Nd5 Qd8 23. Qe2 Qe8 24. Qc2 c6 25. Ne3 Bb8 26. Ng5 Bd7 27. Nc4 h6 28. Nf3 c5 29. Nxd6 Bxd6 30. Rxd6 Bxa4 31. Qd2 cxb4 32. cxb4 Qb5 33. Rd8+ Rxd8 34. Qxd8+ Kh7 35. Qd6 f6 36. Qe6 Rb6 37. Qf5+ Kg8 38. Qc8+ Kh7 39. Qf5+ g6 40. Qc8 Qc6 41. Qf8 Qe8 42. Qc5 Rc6 43. Qa7+ Kg8 44. h4 h5 45. Re2 Rd6 46. Kh2 Qd7 47. Qc5 Qc6 48. Qe3 Qc4 49. Rb2 Rd3 50. Qe2 Bc6 51. Nd2 Qd4 52. Rc2 Bb5 53. Nf3 Qxb4 54. Rc8+ Kf7 55. Qa2+ Qb3 56. Qa5 Qe6 57. Qb4 Qxc8 0-1

[Event "Chessable Masters Play In"]
[Site "Chess.com INT"]
[Date "2023.03.13"]
[Round "1"]
[White "Steinberg, Nitzan"]
[Black "Mareco, Sandro"]
[Result "1/2-1/2"]
[ECO "C70"]
[WhiteElo "2546"]
[BlackElo "2623"]
[PlyCount "98"]
[EventDate "2023.03.13"]
[EventType "swiss (rapid)"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nge7 5. d4 exd4 6. Nxd4 Nxd4 7. Qxd4 Nc6 8. Qd1 Bc5 9. 0-0 0-0 10. Nc3 d6 11. Bf4 b5 12. Bb3 Na5 13. Qd3 Bb7 14. Bd5 c6 15. Bb3 Qe7 16. Rad1 Rad8 17. Rfe1 Nxb3 18. axb3 f6 19. Qg3 Rd7 20. h4 Rfd8 21. Re2 Qf7 22. Red2 d5 23. e5 fxe5 24. Bxe5 Bf8 25. Rd4 c5 26. Rg4 d4 27. Ne4 Bxe4 28. Rxe4 d3 29. Rxd3 Rxd3 30. cxd3 Qxb3 31. Re3 Rd7 32. Qg4 Rf7 33. h5 h6 34. Rg3 Qc2 35. f4 c4 36. dxc4 bxc4 37. Kh2 Qf5 38. Kh3 Qb1 39. Kh2 Qf5 40. Qg6 Qc8 41. Qxh6 Qd8 42. Qg6 Rxf4 43. Qe6+ Rf7 44. h6 Qh4+ 45. Rh3 Qe7 46. hxg7 Bxg7 47. Qc8+ Qf8 48. Qxf8+ Kxf8 49. Bxg7+ Kxg7 1/2-1/2

[Event "PRO League Prelim"]
[Site "Chess.com INT"]
[Date "2023.03.09"]
[Round "4.1"]
[White "Lagno, Kateryna"]
[Black "Mareco, Sandro"]
[Result "0-1"]
[ECO "C70"]
[WhiteElo "2560"]
[BlackElo "2622"]
[PlyCount "78"]
[EventDate "2023.02.14"]
[EventType "team-swiss (rapid)"]
[EventRounds "5"]
[EventCountry "USA"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]
[WhiteTeam "Blitz"]
[BlackTeam "Brazil Capybaras"]
[WhiteTeamCountry "FRA"]
[BlackTeamCountry "BRA"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nge7 5. c3 Ng6 6. 0-0 d5 7. d3 Be7 8. h3 0-0 9. Re1 Be6 10. exd5 Qxd5 11. Bb3 Qd7 12. Bxe6 Qxe6 13. d4 Rad8 14. Qc2 Qd5 15. dxe5 Ngxe5 16. Nxe5 Nxe5 17. Be3 Nd3 18. Re2 Rd6 19. Nd2 Rg6 20. f3 Bc5 21. Kh1 Bxe3 22. Rxe3 Nf2+ 23. Kg1 Nxh3+ 24. Kf1 Nf4 25. g4 Rxg4 26. Qe4 Qxe4 27. Rxe4 Rh4 28. Kf2 Ng6 29. Rxh4 Nxh4 30. Nc4 Rd8 31. Re1 Kf8 32. Re2 Ng6 33. a4 h6 34. Na5 b6 35. Nc6 Rd6 36. Nd4 Nf4 37. Re4 Nd3+ 38. Ke2 Nc5 39. Re5 Nxa4 0-1

[Event "PRO League Prelim"]
[Site "Chess.com INT"]
[Date "2023.03.09"]
[Round "4.2"]
[White "Mareco, Sandro"]
[Black "Boyer, Mahel"]
[Result "1/2-1/2"]
[ECO "E08"]
[WhiteElo "2622"]
[BlackElo "2453"]
[PlyCount "98"]
[EventDate "2023.02.14"]
[EventType "team-swiss (rapid)"]
[EventRounds "5"]
[EventCountry "USA"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]
[WhiteTeam "Brazil Capybaras"]
[BlackTeam "Blitz"]
[WhiteTeamCountry "BRA"]
[BlackTeamCountry "FRA"]

1. d4 e6 2. c4 d5 3. Nf3 Nf6 4. g3 Be7 5. Bg2 0-0 6. 0-0 c6 7. Qc2 b6 8. Rd1 Nbd7 9. b3 a5 10. Nbd2 Bb7 11. Bb2 c5 12. cxd5 Nxd5 13. Rac1 Rc8 14. Qb1 cxd4 15. Nxd4 Rxc1 16. Rxc1 Qa8 17. Nc4 Rc8 18. Nb5 Qb8 19. Qa1 N5f6 20. Bxb7 Qxb7 21. Ncd6 Rxc1+ 22. Qxc1 Bxd6 23. Nxd6 Qd5 24. Ba3 Qa8 25. Qc7 h5 26. h3 Qb8 27. Qc6 Ne5 28. Qb5 Ng6 29. Nc4 Qd8 30. Bd6 Ne4 31. Qc6 Nxd6 32. Qxd6 Qf6 33. a4 h4 34. Qxb6 Qc3 35. Qe3 Qe1+ 36. Kg2 hxg3 37. fxg3 Qb4 38. Qb6 Qe1 39. Qd8+ Kh7 40. Qd2 Qb1 41. Nxa5 Qe4+ 42. Kh2 f5 43. Qd3 Qb4 44. Nc4 Qe1 45. a5 Qf2+ 46. Kh1 Qf1+ 47. Kh2 Qf2+ 48. Kh1 Qf1+ 49. Kh2 Qf2+ 1/2-1/2

[Event "PRO League Prelim"]
[Site "Chess.com INT"]
[Date "2023.03.09"]
[Round "4.3"]
[White "Mareco, Sandro"]
[Black "Grischuk, Alexander"]
[Result "1/2-1/2"]
[ECO "E04"]
[WhiteElo "2622"]
[BlackElo "2745"]
[PlyCount "63"]
[EventDate "2023.02.14"]
[EventType "team-swiss (rapid)"]
[EventRounds "5"]
[EventCountry "USA"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]
[WhiteTeam "Brazil Capybaras"]
[BlackTeam "Blitz"]
[WhiteTeamCountry "BRA"]
[BlackTeamCountry "FRA"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 dxc4 5. Bg2 a6 6. 0-0 Nc6 7. Nc3 Rb8 8. e4 Be7 9. d5 Nb4 10. Ne5 exd5 11. exd5 0-0 12. a3 Nd3 13. Nxd3 cxd3 14. Qxd3 Ng4 15. Bf4 Bd6 16. Qd4 Bxf4 17. Qxf4 Qd6 18. Qxd6 cxd6 19. Ne4 Rd8 20. Rac1 Bf5 21. Rc3 Bxe4 22. Bxe4 Nf6 23. Bf3 Rbc8 24. Rfc1 Rxc3 25. Rxc3 Kf8 26. Rc7 Rd7 27. Rc8+ Ke7 28. Kf1 Rd8 29. Rc7+ Rd7 30. Rc8 Rd8 31. Rc7+ Rd7 32. Rc8 1/2-1/2

[Event "PRO League Prelim"]
[Site "Chess.com INT"]
[Date "2023.03.09"]
[Round "4.5"]
[White "Mareco, Sandro"]
[Black "Vachier Lagrave, Maxime"]
[Result "0-1"]
[ECO "E05"]
[WhiteElo "2622"]
[BlackElo "2737"]
[PlyCount "102"]
[EventDate "2023.02.14"]
[EventType "team-swiss (rapid)"]
[EventRounds "5"]
[EventCountry "USA"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]
[WhiteTeam "Brazil Capybaras"]
[BlackTeam "Blitz"]
[WhiteTeamCountry "BRA"]
[BlackTeamCountry "FRA"]

1. Nf3 d5 2. d4 Nf6 3. c4 e6 4. g3 Be7 5. Bg2 0-0 6. 0-0 dxc4 7. Qc2 a6 8. a4 Bd7 9. Qxc4 Bc6 10. Bg5 Nbd7 11. Nc3 a5 12. Rfd1 Bxf3 13. Bxf3 c6 14. e4 h6 15. Be3 Bb4 16. Qb3 Qc7 17. Rac1 Rfd8 18. e5 Ne8 19. h4 Qb8 20. Kg2 Nc7 21. g4 Nf8 22. g5 Ng6 23. Rh1 c5 24. dxc5 Nxe5 25. gxh6 Nxf3 26. Kxf3 Nd5 27. Nxd5 Rxd5 28. Rcg1 g6 29. h5 Kh7 30. Qc4 Rf5+ 31. Ke2 Qe5 32. hxg6+ fxg6 33. Qd4 Qxd4 34. Bxd4 Bxc5 35. Rd1 Bxd4 36. Rxd4 Raf8 37. Rd7+ R8f7 38. Rxf7+ Rxf7 39. Ke3 Rc7 40. Kd3 Rc6 41. b3 b6 42. Kd4 Rc2 43. f4 Rf2 44. Ke5 Rf3 45. Kxe6 Rxf4 46. Rh3 g5 47. Kd6 Rb4 48. Kc6 g4 49. Rh4 g3 50. Rh3 Rxb3 51. Kd5 g2 0-1

[Event "PRO League Prelim"]
[Site "Chess.com INT"]
[Date "2023.03.09"]
[Round "4.4"]
[White "Vachier Lagrave, Maxime"]
[Black "Mareco, Sandro"]
[Result "1-0"]
[ECO "B12"]
[WhiteElo "2737"]
[BlackElo "2622"]
[PlyCount "103"]
[EventDate "2023.02.14"]
[EventType "team-swiss (rapid)"]
[EventRounds "5"]
[EventCountry "USA"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]
[WhiteTeam "Blitz"]
[BlackTeam "Brazil Capybaras"]
[WhiteTeamCountry "FRA"]
[BlackTeamCountry "BRA"]

1. e4 c6 2. d4 d5 3. e5 c5 4. dxc5 e6 5. c3 Bxc5 6. Qg4 g6 7. Nf3 h5 8. Qf4 Nh6 9. Bd3 Be7 10. 0-0 Nc6 11. h3 Nf5 12. Re1 Bd7 13. Na3 a6 14. Nc2 Qc7 15. Ng5 h4 16. Bd2 Rh5 17. Nf3 0-0-0 18. a4 f6 19. exf6 Qxf4 20. Bxf4 Bxf6 21. Re2 Re8 22. Rae1 Rf8 23. Bh2 Rh7 24. b4 Bxc3 25. Rc1 Bb2 26. Rb1 Bf6 27. b5 axb5 28. axb5 Na5 29. Nb4 Nc4 30. Ra2 Kd8 31. Ra8+ Ke7 32. Ra7 Ncd6 33. Re1 Kf7 34. Bxf5 Nxf5 35. Rxb7 Kg8 36. Ne5 Bxe5 37. Bxe5 Rc8 38. Nd3 Rf7 39. Ba1 Be8 40. Rb6 Rfc7 41. Rbxe6 Bxb5 42. Nf4 Rc1 43. Rxg6+ Kh7 44. Rge6 Rxe1+ 45. Rxe1 d4 46. Re5 Rc1+ 47. Kh2 Rxa1 48. Rxb5 Nd6 49. Rh5+ Kg7 50. Rxh4 Rd1 51. Ne6+ Kf6 52. Rxd4 1-0

[Event "PRO League Prelim"]
[Site "Chess.com INT"]
[Date "2023.02.22"]
[Round "2.3"]
[White "Oparin, Grigoriy"]
[Black "Mareco, Sandro"]
[Result "1/2-1/2"]
[ECO "A17"]
[WhiteElo "2667"]
[BlackElo "2622"]
[PlyCount "127"]
[EventDate "2023.02.14"]
[EventType "team-swiss (rapid)"]
[EventRounds "5"]
[EventCountry "USA"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]
[WhiteTeam "Charlotte Cobras"]
[BlackTeam "Brazil Capybaras"]
[WhiteTeamCountry "USA"]
[BlackTeamCountry "BRA"]

1. Nf3 Nf6 2. c4 e6 3. e3 d5 4. Nc3 Bd6 5. b3 0-0 6. Bb2 a6 7. Rc1 Re8 8. g3 b6 9. cxd5 exd5 10. Bg2 Bb7 11. 0-0 Nbd7 12. Ne2 Rc8 13. Nf4 c6 14. d4 a5 15. Nd3 Ba6 16. Re1 Ne4 17. Nfe5 Nxe5 18. Nxe5 c5 19. f3 Nf6 20. f4 Qe7 21. Qd2 Ne4 22. Bxe4 dxe4 23. Red1 Bxe5 24. fxe5 Bd3 25. dxc5 bxc5 26. Qxa5 h5 27. Qe1 Ra8 28. a3 Reb8 29. Rc3 Qe6 30. Rxc5 Rxb3 31. Rd2 Rab8 32. Qc1 Qf5 33. e6 Qxe6 34. Rf2 R3b6 35. Rxh5 Rc8 36. Rc5 Rcb8 37. Kg2 f6 38. h3 Qd6 39. Rc8+ Kh7 40. Rxb8 Rxb8 41. Qd1 Qd5 42. Qg4 Kg8 43. Bxf6 Rb7 44. Bd4 Rf7 45. Rxf7 Qxf7 46. Qf4 Qa2+ 47. Qf2 Qxa3 48. g4 Qb3 49. Qf5 Qf7 50. Qf4 Be2 51. Kg3 Bf3 52. h4 Qa2 53. Qb8+ Kh7 54. Qb2 Qxb2 55. Bxb2 Kg6 56. Kf4 Kf7 57. h5 g6 58. h6 Kg8 59. g5 Kh7 60. Bd4 Bg2 61. Ke5 Bf3 62. Kf4 Bg2 63. Ke5 Bf3 64. Kf4 1/2-1/2

[Event "PRO League Prelim"]
[Site "Chess.com INT"]
[Date "2023.02.21"]
[Round "2.1"]
[White "Jacobson, Brandon"]
[Black "Mareco, Sandro"]
[Result "0-1"]
[ECO "A17"]
[WhiteElo "2543"]
[BlackElo "2622"]
[PlyCount "88"]
[EventDate "2023.02.14"]
[EventType "team-swiss (rapid)"]
[EventRounds "5"]
[EventCountry "USA"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]
[WhiteTeam "Charlotte Cobras"]
[BlackTeam "Brazil Capybaras"]
[WhiteTeamCountry "USA"]
[BlackTeamCountry "BRA"]

1. Nf3 Nf6 2. c4 e6 3. Nc3 d5 4. e3 Bd6 5. b3 0-0 6. Bb2 a6 7. g3 b6 8. cxd5 exd5 9. Bg2 Bb7 10. 0-0 Nbd7 11. Rc1 Re8 12. Re1 Qe7 13. Nh4 g6 14. Nf3 Rad8 15. Re2 Nc5 16. d3 Ne6 17. d4 h5 18. Rec2 Ng7 19. Ne5 Nf5 20. Ne2 c5 21. Nf4 Ne4 22. Nfd3 a5 23. dxc5 bxc5 24. Qe1 a4 25. Bxe4 dxe4 26. Nxc5 axb3 27. axb3 Bd5 28. Ned7 Rxd7 29. Qc3 Kh7 30. Nxd7 Qxd7 31. Rd1 Qb7 32. Rcd2 Be5 33. Qa5 Bxb2 34. Rxb2 Be6 35. b4 Nh6 36. b5 Bg4 37. Rc1 Qd5 38. Qc7 Rc8 39. Qxc8 Bxc8 40. Rxc8 Qd1+ 41. Kg2 h4 42. h3 Qf3+ 43. Kh2 hxg3+ 44. fxg3 Nf5 0-1

[Event "PRO League Prelim"]
[Site "Chess.com INT"]
[Date "2023.02.21"]
[Round "2.2"]
[White "Mareco, Sandro"]
[Black "Antova, Gabriela"]
[Result "1-0"]
[ECO "D27"]
[WhiteElo "2622"]
[BlackElo "2266"]
[PlyCount "57"]
[EventDate "2023.02.14"]
[EventType "team-swiss (rapid)"]
[EventRounds "5"]
[EventCountry "USA"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]
[WhiteTeam "Brazil Capybaras"]
[BlackTeam "Charlotte Cobras"]
[WhiteTeamCountry "BRA"]
[BlackTeamCountry "USA"]

1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 e6 5. Bxc4 c5 6. 0-0 a6 7. b3 Nbd7 8. Bb2 Be7 9. Nbd2 0-0 10. a4 b6 11. Qe2 Bb7 12. Rfd1 cxd4 13. Nxd4 Qb8 14. N2f3 Nc5 15. h3 Nd5 16. Rac1 Bf6 17. Nh2 g6 18. Ng4 Bg7 19. Nf3 h5 20. Nge5 Nf6 21. Ng5 Bd5 22. Qc2 Bxc4 23. Qxc4 Qb7 24. Bd4 Rac8 25. Nexf7 Rxf7 26. b4 Qd5 27. Nxf7 Kxf7 28. bxc5 Qxc4 29. Rxc4 1-0

[Event "Florianopolis op 9th"]
[Site "Florianopolis"]
[Date "2023.01.29"]
[Round "10"]
[White "Mareco, Sandro"]
[Black "Melian, Juan Sebastian"]
[Result "1-0"]
[ECO "B43"]
[WhiteElo "2625"]
[BlackElo "2197"]
[PlyCount "49"]
[EventDate "2023.01.23"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "BRA"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 b5 6. Bd3 Bb7 7. 0-0 Nc6 8. Nxc6 Bxc6 9. Qe2 Bc5 10. a4 b4 11. Nd5 a5 12. Bf4 d6 13. Rad1 Ne7 14. Nxe7 Qxe7 15. e5 d5 16. Qg4 f5 17. exf6 gxf6 18. Rfe1 e5 19. Bb5 Bxb5 20. axb5 Rd8 21. Qh5+ Qf7 22. Rxe5+ fxe5 23. Qxe5+ Be7 24. Qxh8+ Kd7 25. Qe5 1-0

[Event "Florianopolis op 9th"]
[Site "Florianopolis"]
[Date "2023.01.28"]
[Round "8"]
[White "Mareco, Sandro"]
[Black "Barbosa, Evandro Amorim"]
[Result "1/2-1/2"]
[ECO "B89"]
[WhiteElo "2625"]
[BlackElo "2482"]
[PlyCount "44"]
[EventDate "2023.01.23"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "BRA"]
[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 Nf6 5. Nc3 e6 6. Be3 Nc6 7. Bc4 a6 8. Qe2 Na5 9. Bd3 Be7 10. f4 b5 11. b4 Qc7 12. Ncxb5 axb5 13. Nxb5 Qc6 14. bxa5 0-0 15. Bd2 Bb7 16. Nd4 Qc5 17. Nb3 Qc6 18. Nd4 Qc5 19. Nb3 Qc6 20. e5 dxe5 21. fxe5 Nd7 22. 0-0-0 Nf6 1/2-1/2

[Event "Florianopolis op 9th"]
[Site "Florianopolis"]
[Date "2023.01.28"]
[Round "9"]
[White "Terao, Juliana Sayumi"]
[Black "Mareco, Sandro"]
[Result "0-1"]
[ECO "C77"]
[WhiteElo "2243"]
[BlackElo "2625"]
[PlyCount "68"]
[EventDate "2023.01.23"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "BRA"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. d3 d6 6. c3 g6 7. 0-0 Bg7 8. Re1 0-0 9. Nbd2 b5 10. Bc2 Bb7 11. a4 b4 12. a5 Rb8 13. Nb3 h6 14. Bd2 Bc8 15. d4 Nh5 16. d5 bxc3 17. bxc3 Ne7 18. c4 f5 19. exf5 Nxf5 20. Rb1 Qf6 21. Qe2 Bd7 22. Be4 Rbe8 23. Nc1 Qf7 24. Rb7 Bc8 25. Ra7 Nf6 26. Nd3 Nd4 27. Nxd4 exd4 28. f3 Bf5 29. Nf2 Nxe4 30. fxe4 Bxe4 31. Rxc7 Qxc7 32. Nxe4 Re5 33. Qg4 Qf7 34. h3 Rfe8 0-1

[Event "Florianopolis op 9th"]
[Site "Florianopolis"]
[Date "2023.01.27"]
[Round "7"]
[White "Di Berardino, Diego Rafael"]
[Black "Mareco, Sandro"]
[Result "1/2-1/2"]
[ECO "E49"]
[WhiteElo "2458"]
[BlackElo "2625"]
[PlyCount "46"]
[EventDate "2023.01.23"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "BRA"]
[SourceTitle "CBM 214 Extra"]
[Source "ChessBase"]
[SourceDate "2023.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.07.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 0-0 5. Bd3 d5 6. a3 Bxc3+ 7. bxc3 c6 8. a4 Qc7 9. Nf3 b6 10. Ba3 Re8 11. 0-0 Ba6 12. cxd5 cxd5 13. Bxa6 Nxa6 14. Qd3 Qb7 15. Nd2 e5 16. Rfb1 Rac8 17. c4 exd4 18. exd4 Nc7 19. c5 Qc6 20. cxb6 axb6 21. Nf3 Qxa4 22. Be7 Qc4 23. Qf5 Qc6 1/2-1/2

[Event "Florianopolis op 9th"]
[Site "Florianopolis"]
[Date "2023.01.26"]
[Round "6"]
[White "Mareco, Sandro"]
[Black "Mendes Domingues, Ribeiro Matheus"]
[Result "1-0"]
[ECO "E05"]
[WhiteElo "2625"]
[BlackElo "2250"]
[PlyCount "103"]
[EventDate "2023.01.23"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "BRA"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. Nf3 d5 2. c4 e6 3. g3 Nf6 4. Bg2 Be7 5. 0-0 0-0 6. d4 dxc4 7. Qc2 a6 8. a4 Bd7 9. Qxc4 Bc6 10. Bg5 Bd5 11. Qc2 Be4 12. Qc1 Nc6 13. e3 h6 14. Bxf6 Bxf6 15. Nc3 Bg6 16. Rd1 Nb4 17. Ne1 c6 18. Ne4 Bxe4 19. Bxe4 a5 20. Nd3 Qb6 21. Nxb4 Qxb4 22. Qc2 Rac8 23. Rac1 c5 24. b3 Rfd8 25. d5 exd5 26. Bxd5 Rc7 27. Qf5 Re7 28. Bc4 Ree8 29. Rd7 Rxd7 30. Qxd7 Re7 31. Qc8+ Kh7 32. Qf5+ Kg8 33. Rd1 Qb6 34. Rd7 Kf8 35. Rxe7 Kxe7 36. Qd5 Qc7 37. Qxf7+ Kd8 38. Qf8+ Kd7 39. Bb5+ Ke6 40. Qg8+ Kd6 41. f4 Qe7 42. Kf2 Kc7 43. Bc4 Qd6 44. Bd5 Qb6 45. Kf3 Qb4 46. Qf7+ Kb8 47. Kg4 Qb6 48. e4 Bd4 49. e5 Qc7 50. Kf5 Qxf7+ 51. Bxf7 Bg1 52. e6 1-0

[Event "Florianopolis op 9th"]
[Site "Florianopolis"]
[Date "2023.01.26"]
[Round "5"]
[White "Rodrigues, Edgar"]
[Black "Mareco, Sandro"]
[Result "1/2-1/2"]
[ECO "C45"]
[WhiteElo "2299"]
[BlackElo "2625"]
[PlyCount "114"]
[EventDate "2023.01.23"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "BRA"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Bc5 5. Be3 Qf6 6. c3 d6 7. Bc4 Ne5 8. 0-0 Qg6 9. f3 Nxc4 10. Qa4+ c6 11. Qxc4 Nf6 12. Nd2 0-0 13. Kh1 Bb6 14. Qa4 Re8 15. c4 d5 16. cxd5 cxd5 17. Qb3 dxe4 18. Nc4 Bxd4 19. Bxd4 Be6 20. Qb4 Bd5 21. Ne5 Qh5 22. f4 a5 23. Qc3 Qf5 24. Qg3 Rac8 25. Bc3 a4 26. a3 e3 27. Qxe3 Ne4 28. Qd4 Nxc3 29. bxc3 Bb3 30. Rae1 f6 31. Nf3 Red8 32. Qb4 Qc5 33. Qxb7 Rc7 34. Qb4 Qxc3 35. Qb6 Rdc8 36. Nd4 Qc5 37. Qxc5 Rxc5 38. Kg1 Bf7 39. Re7 g6 40. Ra7 Rc4 41. Nb5 Rd8 42. g3 Rc5 43. Nc7 Rd2 44. Rf2 Rd7 45. Ra8+ Kg7 46. Ne8+ Bxe8 47. Rxe8 Rc1+ 48. Rf1 Rxf1+ 49. Kxf1 Rd3 50. Re7+ Kg8 51. Kg2 Rxa3 52. Ra7 h5 53. Kh3 Ra2 54. g4 a3 55. gxh5 gxh5 56. Kg3 Kf8 57. h3 Ra1 1/2-1/2

[Event "Florianopolis op 9th"]
[Site "Florianopolis"]
[Date "2023.01.25"]
[Round "4"]
[White "Mareco, Sandro"]
[Black "Labussiere, Yago"]
[Result "1-0"]
[ECO "A11"]
[WhiteElo "2625"]
[BlackElo "2227"]
[PlyCount "103"]
[EventDate "2023.01.23"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "BRA"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. Nf3 d5 2. g3 Nf6 3. Bg2 Bf5 4. 0-0 c6 5. c4 e6 6. cxd5 exd5 7. d3 Be7 8. Qb3 Qb6 9. Qc2 0-0 10. Nc3 Bg6 11. e4 Na6 12. Be3 Nb4 13. Qb3 Qa6 14. Ne5 Rad8 15. a3 Nxd3 16. Nxd3 Qxd3 17. Qxb7 Rd7 18. Qxc6 d4 19. Rad1 dxe3 20. Rxd3 exf2+ 21. Rxf2 Rxd3 22. Bf3 Bd8 23. Qc4 Re3 24. Kg2 Re1 25. Re2 Rxe2+ 26. Nxe2 Bb6 27. Nc3 Nd7 28. Qb5 Nc5 29. Nd5 Rb8 30. b4 Ne6 31. Nxb6 Rxb6 32. Qe8+ Nf8 33. h4 f5 34. Qa8 fxe4 35. Bxe4 Bxe4+ 36. Qxe4 Re6 37. Qd5 Kf7 38. a4 a6 39. Qb7+ Kf6 40. b5 axb5 41. a5 Rd6 42. a6 Nd7 43. Qxb5 h6 44. a7 Nb6 45. Qc5 Ke6 46. Qc7 g6 47. Qg7 Kd5 48. Qxh6 Kc6 49. Qf8 Kd5 50. a8Q+ Nxa8 51. Qxa8+ Ke6 52. Qf8 1-0

[Event "Florianopolis op 9th"]
[Site "Florianopolis"]
[Date "2023.01.24"]
[Round "3"]
[White "De Carvalho, Vitor Augusto Ponci"]
[Black "Mareco, Sandro"]
[Result "0-1"]
[ECO "A04"]
[WhiteElo "2097"]
[BlackElo "2625"]
[PlyCount "52"]
[EventDate "2023.01.23"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "BRA"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. g3 g6 4. Bg2 Bg7 5. 0-0 e5 6. d3 Nge7 7. c3 0-0 8. a3 d6 9. b4 h6 10. Be3 b6 11. b5 Na5 12. c4 f5 13. Bd2 g5 14. Bxa5 bxa5 15. Nc3 g4 16. Nh4 f4 17. f3 h5 18. Ra2 Rb8 19. Ne2 Bf6 20. Kh1 Bxh4 21. gxh4 Ng6 22. Rg1 Qxh4 23. fxg4 hxg4 24. Bf3 Kh7 25. Nc3 gxf3 26. Qxf3 Qh3 0-1

[Event "Florianopolis op 9th"]
[Site "Florianopolis"]
[Date "2023.01.24"]
[Round "2"]
[White "Mareco, Sandro"]
[Black "Soares, Reynaldo Magalhaes"]
[Result "1-0"]
[ECO "B38"]
[WhiteElo "2625"]
[BlackElo "1941"]
[PlyCount "45"]
[EventDate "2023.01.23"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "BRA"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. d4 0-0 6. Be2 c5 7. 0-0 cxd4 8. Nxd4 Nc6 9. Be3 Bd7 10. f3 Nxd4 11. Bxd4 Bc6 12. b4 b6 13. Qd2 Nd7 14. a3 Bb7 15. Rac1 a5 16. Rfd1 axb4 17. axb4 f5 18. Bxg7 Kxg7 19. exf5 Rxf5 20. Nb5 Ne5 21. Qb2 Qf8 22. Nd4 Rf6 23. f4 1-0

[Event "Florianopolis op 9th"]
[Site "Florianopolis"]
[Date "2023.01.23"]
[Round "1"]
[White "Campora, Edgardo"]
[Black "Mareco, Sandro"]
[Result "0-1"]
[ECO "B22"]
[WhiteElo "1676"]
[BlackElo "2625"]
[PlyCount "70"]
[EventDate "2023.01.23"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "BRA"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. c3 Nf6 4. e5 Nd5 5. d4 cxd4 6. cxd4 d6 7. Bc4 Be7 8. 0-0 0-0 9. Bd2 Nb6 10. Bb3 Nc6 11. a4 dxe5 12. dxe5 Nd7 13. Bc3 b6 14. Qe2 Nc5 15. Bc4 Na5 16. b4 Nxc4 17. bxc5 Ba6 18. cxb6 axb6 19. Rd1 Qc7 20. Qe1 Bb7 21. Nbd2 Na3 22. Bb2 Rxa4 23. Rdc1 Qd7 24. Rc3 Nb5 25. Rxa4 Nxc3 26. Rd4 Nd5 27. Nc4 b5 28. Na5 Ba8 29. Qe2 Rc8 30. h3 h6 31. Ne1 Qa7 32. Nb3 Qa2 33. Na1 Ba3 34. Nd3 Nc3 35. Qd2 Bxb2 0-1

[Event "Arica op 8th"]
[Site "Arica"]
[Date "2022.12.21"]
[Round "9"]
[White "Mareco, Sandro"]
[Black "Obregon, Carlos Andres"]
[Result "1/2-1/2"]
[ECO "E07"]
[WhiteElo "2619"]
[BlackElo "2508"]
[PlyCount "41"]
[EventDate "2022.12.16"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "CHI"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 e6 5. g3 Nbd7 6. Bg2 Be7 7. 0-0 0-0 8. Qd3 b6 9. e4 Bb7 10. cxd5 cxd5 11. e5 Ne4 12. Ne2 Qc8 13. Qd1 h6 14. Ne1 f6 15. f3 Ng5 16. exf6 Bxf6 17. Be3 e5 18. Rc1 Qe8 19. Nc3 exd4 20. Bxd4 Bxd4+ 21. Qxd4 1/2-1/2

[Event "Arica op 8th"]
[Site "Arica"]
[Date "2022.12.21"]
[Round "10"]
[White "Perez Gormaz, Matias Ariel"]
[Black "Mareco, Sandro"]
[Result "0-1"]
[ECO "C54"]
[WhiteElo "2397"]
[BlackElo "2619"]
[PlyCount "140"]
[EventDate "2022.12.16"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "CHI"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d3 a5 6. 0-0 d6 7. Re1 0-0 8. h3 Ba7 9. Be3 Be6 10. Bb5 Ne7 11. Bxa7 Rxa7 12. d4 c6 13. Bf1 Qc7 14. c4 Ng6 15. Nc3 Raa8 16. Qc2 Rad8 17. Rad1 exd4 18. Nxd4 Bc8 19. Rd2 Rfe8 20. Red1 h6 21. Nde2 Nf8 22. Ng3 h5 23. b3 g6 24. Bd3 Ne6 25. Qc1 h4 26. Nf1 Nc5 27. Re2 Qe7 28. Bb1 Nh5 29. Nh2 Qe5 30. Nf3 Qf6 31. Qe3 Nd7 32. Red2 Ne5 33. Ne1 g5 34. c5 dxc5 35. Rxd8 Rxd8 36. Rxd8+ Qxd8 37. Qxc5 f6 38. Qe3 Nf4 39. Bc2 Kg7 40. Ne2 Nxe2+ 41. Qxe2 Qd4 42. Nd3 Be6 43. Nxe5 Qxe5 44. Qd2 Kf7 45. Qd8 Kg7 46. Qe7+ Bf7 47. Qxe5 fxe5 48. Kf1 Kf6 49. Ke2 b5 50. Kd2 Ke7 51. Kc3 b4+ 52. Kd2 Kd6 53. Ke3 Kc5 54. Bd1 Be6 55. Bc2 a4 56. Bd1 Kb6 57. Bc2 c5 58. Kd2 axb3 59. axb3 c4 60. bxc4 Bxc4 61. Ke3 Kc5 62. g3 b3 63. Bd1 b2 64. Bc2 Bf1 65. f4 gxf4+ 66. gxf4 exf4+ 67. Kxf4 Kd4 68. Bb1 Bd3 69. Ba2 Bxe4 70. Kg4 Kc3 0-1

[Event "Arica op 8th"]
[Site "Arica"]
[Date "2022.12.20"]
[Round "8"]
[White "Hernandez Guerrero, Gilberto Eduardo"]
[Black "Mareco, Sandro"]
[Result "1/2-1/2"]
[ECO "B80"]
[WhiteElo "2549"]
[BlackElo "2619"]
[PlyCount "67"]
[EventDate "2022.12.16"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "CHI"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 a6 3. Nf3 d6 4. g3 Nc6 5. Bg2 Nf6 6. 0-0 e6 7. d4 cxd4 8. Nxd4 Bd7 9. Nxc6 Bxc6 10. a4 Be7 11. Be3 0-0 12. a5 Nd7 13. Re1 Qc7 14. Na4 Rae8 15. Nb6 f5 16. Nxd7 Qxd7 17. Bb6 fxe4 18. Bxe4 Bf6 19. c3 d5 20. Bg2 e5 21. Qb3 Qf7 22. Rad1 e4 23. Rd2 Bg5 24. Be3 Re5 25. Bxg5 Rxg5 26. Qb6 h6 27. Qd4 Rf5 28. Bh3 Rg5 29. Bg2 Rf5 30. Qb6 Rg5 31. c4 dxc4 32. Bxe4 Re8 33. Rde2 Rf8 34. Rd2 1/2-1/2

[Event "Arica op 8th"]
[Site "Arica"]
[Date "2022.12.19"]
[Round "6"]
[White "Henriquez Villagra, Cristobal"]
[Black "Mareco, Sandro"]
[Result "1/2-1/2"]
[ECO "D04"]
[WhiteElo "2587"]
[BlackElo "2619"]
[PlyCount "44"]
[EventDate "2022.12.16"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "CHI"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. e3 Bf5 4. b3 e6 5. Bb2 h6 6. Nbd2 Bd6 7. Be2 0-0 8. 0-0 Nbd7 9. c4 a5 10. a3 c6 11. Ra2 Ne4 12. Nxe4 Bxe4 13. Bc3 Qe7 14. Qa1 Bxf3 15. Bxf3 b5 16. cxb5 cxb5 17. Be2 Rfb8 18. Rc1 Nf6 19. Be1 Qd7 20. Rac2 Qe7 21. Ra2 Qd7 22. Rac2 Qe7 1/2-1/2

[Event "Arica op 8th"]
[Site "Arica"]
[Date "2022.12.19"]
[Round "7"]
[White "Mareco, Sandro"]
[Black "Vasquez Toledo, Cristian"]
[Result "1/2-1/2"]
[ECO "E09"]
[WhiteElo "2619"]
[BlackElo "2222"]
[PlyCount "40"]
[EventDate "2022.12.16"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "CHI"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. Nf3 d5 2. c4 e6 3. g3 Nf6 4. Bg2 Be7 5. 0-0 0-0 6. d4 c6 7. Qc2 b6 8. Rd1 Ba6 9. b3 Nbd7 10. Nbd2 c5 11. e4 cxd4 12. Nxd4 Rc8 13. exd5 exd5 14. Qf5 g6 15. Qh3 Qc7 16. Bb2 Nc5 17. Qh6 Rfd8 18. Nf5 Ne6 19. Nxe7+ Qxe7 20. cxd5 Ng4 1/2-1/2

[Event "Arica op 8th"]
[Site "Arica"]
[Date "2022.12.18"]
[Round "5"]
[White "Mareco, Sandro"]
[Black "Bachmann, Axel"]
[Result "1-0"]
[ECO "D27"]
[WhiteElo "2619"]
[BlackElo "2618"]
[PlyCount "79"]
[EventDate "2022.12.16"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "CHI"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 e6 5. Bxc4 a6 6. 0-0 c5 7. b3 b5 8. Be2 Bb7 9. a4 b4 10. Bb2 Be7 11. Nbd2 Nbd7 12. Nc4 0-0 13. Rc1 Rc8 14. Nfe5 cxd4 15. Bxd4 Nc5 16. a5 Nd5 17. Bf3 f6 18. Nd3 Nc3 19. Nxc5 Rxc5 20. Bxc3 Bxf3 21. Qxf3 bxc3 22. Rxc3 Rd5 23. Rcc1 Bb4 24. Rfd1 Rf7 25. Nb6 Rxd1+ 26. Rxd1 Qe8 27. Nc4 Rd7 28. g3 Bf8 29. Rc1 Rd5 30. e4 Rb5 31. Rd1 h6 32. Rd3 Qc6 33. Kg2 Bb4 34. h4 Kh7 35. Rd8 Be7 36. Rd3 Bb4 37. h5 Rg5 38. Rd8 f5 39. e5 Qb5 40. Nd6 1-0

[Event "Arica op 8th"]
[Site "Arica"]
[Date "2022.12.17"]
[Round "4"]
[White "Fernandez, Fernando"]
[Black "Mareco, Sandro"]
[Result "0-1"]
[ECO "B12"]
[WhiteElo "2421"]
[BlackElo "2619"]
[PlyCount "52"]
[EventDate "2022.12.16"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "CHI"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. e5 c5 4. Nf3 cxd4 5. Qxd4 Nc6 6. Qf4 f6 7. Nc3 a6 8. Bd2 e6 9. 0-0-0 fxe5 10. Nxe5 Nf6 11. Qa4 Qc7 12. f4 Rb8 13. Re1 Bd6 14. Bxa6 Ra8 15. Nb5 Qe7 16. Nxc6 bxc6 17. Nxd6+ Qxd6 18. Bxc8 Rxa4 19. Rxe6+ Qxe6 20. Bxe6 Rxa2 21. Kb1 Ra4 22. c4 Rxc4 23. b3 Re4 24. f5 Ke7 25. Rc1 Kd6 26. g3 c5 0-1

[Event "Arica op 8th"]
[Site "Arica"]
[Date "2022.12.17"]
[Round "3"]
[White "Mareco, Sandro"]
[Black "Hoffman, Alejandro"]
[Result "1-0"]
[ECO "C02"]
[WhiteElo "2619"]
[BlackElo "2370"]
[PlyCount "67"]
[EventDate "2022.12.16"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "CHI"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Qb6 6. Bd3 Bd7 7. dxc5 Bxc5 8. 0-0 f6 9. b4 Be7 10. Bf4 fxe5 11. Nxe5 Nxe5 12. Bxe5 Nf6 13. Nd2 0-0 14. Qe2 Bd6 15. Nf3 Rae8 16. Bd4 Qc7 17. Ne5 Re7 18. f4 Be8 19. Rae1 a6 20. a3 b5 21. Qe3 Qb7 22. Re2 Bh5 23. Ra2 Be8 24. h3 Ne4 25. Re2 Bxe5 26. Bxe5 Rd7 27. Bd4 Bg6 28. a4 bxa4 29. Ra2 Nxc3 30. Bxg6 Nxa2 31. Qxe6+ Kh8 32. Bb1 Qxb4 33. Be5 Re7 34. Qh6 1-0

[Event "Arica op 8th"]
[Site "Arica"]
[Date "2022.12.16"]
[Round "2"]
[White "Cerda Albornoz, Guillermo Fidel"]
[Black "Mareco, Sandro"]
[Result "0-1"]
[ECO "B31"]
[WhiteElo "2181"]
[BlackElo "2619"]
[PlyCount "62"]
[EventDate "2022.12.16"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "CHI"]
[SourceTitle "CBM 212 Extra"]
[Source "ChessBase"]
[SourceDate "2023.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.03.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. 0-0 Bg7 5. Re1 e5 6. Bxc6 dxc6 7. d3 Qe7 8. Be3 Nf6 9. Na3 0-0 10. Nc4 Ng4 11. Bg5 f6 12. Bd2 Nh6 13. Qc1 Nf7 14. Qb1 Bg4 15. Qd1 Rad8 16. a3 Ng5 17. Ncxe5 Bh5 18. Nc4 Nxf3+ 19. gxf3 f5 20. e5 Rd4 21. Kg2 Rh4 22. Rh1 b5 23. Qc1 f4 24. Nd6 Qg5+ 25. Kf1 Bxf3 26. Rg1 Qxe5 27. Ne4 Qe6 28. Bc3 Qh3+ 29. Ke1 Qxh2 30. Rf1 Qg2 31. Bxg7 Qxf1+ 0-1

