[Event "Kiel op"]
[Site "Kiel"]
[Date "2025.07.06"]
[Round "9"]
[White "Sieciechowicz, Marcin"]
[Black "Savitha Shri, B."]
[Result "1/2-1/2"]
[ECO "D31"]
[WhiteElo "2413"]
[BlackElo "2293"]
[PlyCount "51"]
[EventDate "2025.06.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CB28_2025"]
[SourceDate "2025.07.09"]
[SourceVersion "1"]
[SourceVersionDate "2025.07.09"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 c6 4. cxd5 exd5 5. Bf4 Bf5 6. e3 Qb6 7. Qd2 Nf6 8. f3 Nbd7 9. g4 Bg6 10. h4 h6 11. Nge2 Be7 12. Ng3 Nf8 13. h5 Bh7 14. Nf5 Bxf5 15. gxf5 0-0-0 16. 0-0-0 N8h7 17. Na4 Qb4 18. Qxb4 Bxb4 19. a3 Bd6 20. Bxd6 Rxd6 21. Nc5 Re8 22. Kd2 Ng5 23. Bg2 Nd7 24. Nxd7 Rxd7 25. Kd3 f6 26. Rhe1 1/2-1/2

[Event "Kiel op"]
[Site "Kiel"]
[Date "2025.07.05"]
[Round "8"]
[White "Swara, Lakshmi S Nair"]
[Black "Sieciechowicz, Marcin"]
[Result "0-1"]
[ECO "C65"]
[WhiteElo "2187"]
[BlackElo "2413"]
[PlyCount "114"]
[EventDate "2025.06.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CB28_2025"]
[SourceDate "2025.07.09"]
[SourceVersion "1"]
[SourceVersionDate "2025.07.09"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. d3 Bc5 5. Bxc6 dxc6 6. 0-0 Bd6 7. Bg5 h6 8. Bh4 g5 9. Bg3 Bg4 10. h3 Bh5 11. Nbd2 Nd7 12. c3 Qf6 13. d4 0-0-0 14. Re1 Kb8 15. a4 Rhe8 16. Qc2 Qg7 17. a5 a6 18. Qb3 f6 19. c4 Bf7 20. d5 c5 21. Re3 h5 22. h4 g4 23. Ne1 Bg6 24. Nd3 Bf8 25. Qc3 Qe7 26. Rb1 Ka8 27. Re2 Qd6 28. Qc2 Bh6 29. Rbe1 c6 30. Qc3 Rc8 31. b3 Qc7 32. Nf1 cxd5 33. cxd5 c4 34. Rc2 Bxe4 35. Rxe4 cxd3 36. Qxc7 dxc2 37. Qxd7 c1Q 38. d6 Qc6 39. Qh7 Rh8 40. Qg6 Rcg8 41. Qf5 Qxd6 42. Rc4 Bf4 43. Bxf4 exf4 44. Rxf4 Qe5 45. Qxf6 Qxf6 46. Rxf6 Rf8 47. Rxf8+ Rxf8 48. Ng3 Rh8 49. f4 gxf3 50. gxf3 Rf8 51. Kg2 Rf4 52. Nxh5 Rxh4 53. Ng7 Rb4 54. Kf2 Kb8 55. Ke2 Kc8 56. Ne8 Kd7 57. Nf6+ Kc6 0-1

[Event "Kiel op"]
[Site "Kiel"]
[Date "2025.07.04"]
[Round "7"]
[White "Sieciechowicz, Marcin"]
[Black "Mirski, Stanislaw"]
[Result "1/2-1/2"]
[ECO "A05"]
[WhiteElo "2413"]
[BlackElo "2231"]
[PlyCount "172"]
[EventDate "2025.06.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CB28_2025"]
[SourceDate "2025.07.09"]
[SourceVersion "1"]
[SourceVersionDate "2025.07.09"]
[SourceQuality "1"]

1. Nf3 e6 2. g3 b5 3. Bg2 Bb7 4. 0-0 Nf6 5. d3 Be7 6. c4 bxc4 7. dxc4 0-0 8. Nc3 Na6 9. Bf4 Qc8 10. Qc2 Nc5 11. Rfd1 a6 12. Be5 Rb8 13. Bd4 Nce4 14. Ne1 Nxc3 15. Bxc3 Bxg2 16. Nxg2 Qb7 17. Rab1 Qe4 18. Qxe4 Nxe4 19. Ba5 Bd6 20. f3 Nc5 21. Ne1 Nb7 22. Bc3 Rfd8 23. Nd3 Nc5 24. Nxc5 Bxc5+ 25. Kf1 Bb4 26. Be5 d6 27. Bd4 Bc5 28. Bxc5 dxc5 29. Rxd8+ Rxd8 30. Ke1 Kf8 31. Rc1 Ke7 32. Rc3 Kd7 33. Kd2 Kc6+ 34. Kc2 Rd4 35. e3 Rd8 36. Ra3 Kb6 37. Rb3+ Kc6 38. Ra3 Kb6 39. Rd3 Rxd3 40. Kxd3 a5 41. e4 Kc6 42. e5 Kd7 43. Ke4 Ke7 44. Kf4 h6 45. Kg4 Kf8 46. f4 c6 47. h4 Kg8 48. h5 Kf8 49. Kh4 Ke7 50. g4 f6 51. exf6+ Kxf6 52. Kg3 a4 53. Kf3 e5 54. fxe5+ Kxe5 55. Ke3 Kf6 56. a3 Ke5 57. Kd3 Kd6 58. Kc3 Kc7 59. Kc2 Kb6 60. Kd3 Kc7 61. Ke4 Kd6 62. Kf5 Ke7 63. g5 hxg5 64. Kxg5 Kf7 65. Kf5 Ke7 66. Ke5 Kd7 67. Ke4 Kd6 68. Kd3 Kc7 69. Kc3 Kb6 70. Kc2 Kb7 71. Kd2 Kc7 72. Kd3 Kc8 73. b3 axb3 74. Kc3 Kb7 75. Kxb3 Ka6 76. Kc2 Ka5 77. Kb2 Ka4 78. Ka2 Ka5 79. Kb3 Kb6 80. Kb2 Ka5 81. Kb3 Ka6 82. Kc3 Ka5 83. Kb3 Ka6 84. Kb2 Ka5 85. Kc3 Ka4 86. Kb2 Ka5 1/2-1/2

[Event "Kiel op"]
[Site "Kiel"]
[Date "2025.07.03"]
[Round "5"]
[White "Sieciechowicz, Marcin"]
[Black "Kosakowski, Jakub"]
[Result "0-1"]
[ECO "A80"]
[WhiteElo "2413"]
[BlackElo "2548"]
[PlyCount "84"]
[EventDate "2025.06.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CB28_2025"]
[SourceDate "2025.07.09"]
[SourceVersion "1"]
[SourceVersionDate "2025.07.09"]
[SourceQuality "1"]

1. d4 f5 2. Bg5 h6 3. Bh4 g5 4. e3 Nf6 5. Bg3 Bg7 6. h4 g4 7. Nc3 d6 8. Bc4 Nh5 9. Nge2 Nc6 10. Nf4 Nxf4 11. Bxf4 e6 12. f3 h5 13. Bg5 Bf6 14. f4 Bxg5 15. hxg5 Ne7 16. e4 d5 17. exd5 exd5 18. Bb3 c6 19. Qd2 Qd6 20. 0-0-0 Bd7 21. Rdf1 0-0-0 22. Nd1 Ng6 23. c3 Rde8 24. Bc2 Kb8 25. b3 h4 26. Nb2 c5 27. dxc5 Qxc5 28. Nd3 Qd6 29. Nb4 d4 30. c4 g3 31. Nd5 Bc6 32. Bxf5 Bxd5 33. cxd5 Ne7 34. Be6 Nxd5 35. f5 Ne3 36. Rf3 h3 37. Rxe3 Qc7+ 38. Kb2 dxe3 39. Qxe3 hxg2 40. Rg1 Rh1 41. Rxg2 Rh2 42. Qf3 Rd8 0-1

[Event "Kiel op"]
[Site "Kiel"]
[Date "2025.07.03"]
[Round "6"]
[White "Terkiewicz, Bruno"]
[Black "Sieciechowicz, Marcin"]
[Result "0-1"]
[ECO "C00"]
[WhiteElo "2183"]
[BlackElo "2413"]
[PlyCount "84"]
[EventDate "2025.06.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CB28_2025"]
[SourceDate "2025.07.09"]
[SourceVersion "1"]
[SourceVersionDate "2025.07.09"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. d3 Bc5 5. c3 d5 6. Nbd2 dxe4 7. dxe4 0-0 8. 0-0 Qe7 9. b4 Bb6 10. Be2 a5 11. b5 Nb8 12. Qc2 Bg4 13. Nc4 Nbd7 14. Ne1 Bxe2 15. Qxe2 Qe6 16. Bg5 Bc5 17. Nf3 Ne8 18. Rfd1 Nd6 19. Nxd6 cxd6 20. Nd2 Rfc8 21. Nf1 Nb6 22. Rd3 h6 23. Be3 d5 24. exd5 Nxd5 25. Rad1 Bxe3 26. Rxd5 Bd4 27. c4 Rc7 28. Nd2 Rac8 29. Qf3 b6 30. g3 Rd7 31. Rxd7 Qxd7 32. Qe2 Qe6 33. Rc1 Bc5 34. Rc2 f5 35. Nf3 e4 36. Nh4 Rd8 37. Qh5 e3 38. Re2 Qe4 39. f3 Qxc4 40. f4 Qe4 41. Nf3 Rd1+ 42. Kg2 Rd2 0-1

[Event "Kiel op"]
[Site "Kiel"]
[Date "2025.07.02"]
[Round "4"]
[White "Sieciechowicz, Marcin"]
[Black "Rohith, S2."]
[Result "1/2-1/2"]
[ECO "E08"]
[WhiteElo "2413"]
[BlackElo "2078"]
[PlyCount "142"]
[EventDate "2025.06.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CB28_2025"]
[SourceDate "2025.07.09"]
[SourceVersion "1"]
[SourceVersionDate "2025.07.09"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 Bb4+ 5. Bd2 Be7 6. Bg2 0-0 7. 0-0 Nbd7 8. Qc2 c6 9. Bf4 b6 10. cxd5 cxd5 11. Rc1 Bb7 12. Bc7 Qe8 13. Qb3 Rc8 14. Na3 Ba6 15. Nb5 Bxb5 16. Qxb5 Nc5 17. Qxe8 Rfxe8 18. Bf4 Na4 19. Rab1 Rxc1+ 20. Bxc1 Rc8 21. Bf1 b5 22. e3 a6 23. Bd3 Ne4 24. Kf1 Kf8 25. Ra1 Ke8 26. Ng1 Bb4 27. f3 Bd2 28. Bxd2 Nxd2+ 29. Ke1 Nc4 30. b3 Nab2 31. Bxc4 dxc4 32. Kd2 a5 33. Kc3 Nd3 34. a3 b4+ 35. axb4 axb4+ 36. Kd2 cxb3 37. Kxd3 b2 38. Rb1 Rc1 39. Rxb2 Rxg1 40. Ke4 Ke7 41. Kf4 Kf6 42. h4 h6 43. h5 Rh1 44. g4 g6 45. hxg6 Kxg6 46. Rxb4 h5 47. g5 Rg1 48. Rb8 Kg7 49. e4 h4 50. Rb2 Kg6 51. Rh2 Rxg5 52. Rxh4 Ra5 53. Rh8 Kf6 54. Re8 Ra4 55. Ke3 Ra3+ 56. Kf4 Ra4 57. e5+ Kg7 58. Rd8 Ra1 59. d5 Ra4+ 60. Kg3 exd5 61. Rxd5 Kg6 62. Rd7 Kf5 63. Rxf7+ Kxe5 64. f4+ Ke6 65. Rf8 Ke7 66. Rb8 Kf6 67. Rb6+ Kf7 68. Kg4 Ra5 69. f5 Ra1 70. Rb7+ Kf6 71. Rb6+ Ke5 1/2-1/2

[Event "Kiel op"]
[Site "Kiel"]
[Date "2025.07.01"]
[Round "3"]
[White "Plenca, Jadranko"]
[Black "Sieciechowicz, Marcin"]
[Result "1/2-1/2"]
[ECO "C01"]
[WhiteElo "2436"]
[BlackElo "2413"]
[PlyCount "63"]
[EventDate "2025.06.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CB28_2025"]
[SourceDate "2025.07.09"]
[SourceVersion "1"]
[SourceVersionDate "2025.07.09"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Nf3 Bd6 5. c4 Nf6 6. c5 Be7 7. Bd3 0-0 8. 0-0 b6 9. Be3 Bg4 10. Nbd2 bxc5 11. dxc5 Nbd7 12. Qc2 c6 13. b4 Qc7 14. Nd4 Rfe8 15. N2b3 Ne5 16. Bf4 Bd7 17. Kh1 Nh5 18. Bxh7+ Kf8 19. Bxe5 Qxe5 20. Rae1 Qc7 21. Bf5 Bf6 22. a3 g6 23. Bxd7 Qxd7 24. Qd1 Re4 25. Rxe4 dxe4 26. Ne2 Qe6 27. Qd6+ Qxd6 28. cxd6 Bb2 29. Na5 Bxa3 30. Nxc6 Nf6 31. Ra1 Rc8 32. Rxa3 1/2-1/2

[Event "Kiel op"]
[Site "Kiel"]
[Date "2025.07.01"]
[Round "2"]
[White "Sieciechowicz, Marcin"]
[Black "Patil, Priyanshu"]
[Result "1-0"]
[ECO "E08"]
[WhiteElo "2413"]
[BlackElo "2212"]
[PlyCount "95"]
[EventDate "2025.06.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CB28_2025"]
[SourceDate "2025.07.09"]
[SourceVersion "1"]
[SourceVersionDate "2025.07.09"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 Bb4+ 5. Bd2 Be7 6. Bg2 0-0 7. 0-0 c6 8. Qc2 Nbd7 9. Bf4 b6 10. cxd5 cxd5 11. Bc7 Qe8 12. Nc3 Ba6 13. Rac1 Rc8 14. Qa4 Nb8 15. Bxb8 Qxa4 16. Nxa4 Rxb8 17. Rc7 Rb7 18. Rfc1 Bd6 19. R7c2 Rbb8 20. Nc3 Rbc8 21. a4 Nd7 22. Bf1 Rc7 23. Nb5 Rxc2 24. Rxc2 Bxb5 25. axb5 Rd8 26. e3 Kf8 27. Rc1 Nb8 28. Bd3 h6 29. Kg2 Ke7 30. g4 g6 31. h4 Rd7 32. Ng1 Rc7 33. Rd1 f5 34. h5 Kf6 35. hxg6 fxg4 36. Ne2 Nd7 37. Rh1 Kg5 38. Nf4 Nf8 39. Rh5+ Kf6 40. Rxh6 Bxf4 41. exf4 Rc1 42. Rh4 Nxg6 43. Rh6 Rd1 44. Bxg6 Kg7 45. Bc2 Rxd4 46. Rxe6 Rd2 47. Rc6 d4 48. f5 1-0

[Event "Kiel op"]
[Site "Kiel"]
[Date "2025.06.30"]
[Round "1"]
[White "Jani Kushal, R."]
[Black "Sieciechowicz, Marcin"]
[Result "0-1"]
[ECO "B90"]
[WhiteElo "2245"]
[BlackElo "2413"]
[PlyCount "118"]
[EventDate "2025.06.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CB28_2025"]
[SourceDate "2025.07.09"]
[SourceVersion "1"]
[SourceVersionDate "2025.07.09"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. f3 e5 7. Nb3 Be7 8. Be3 Be6 9. Qd2 h5 10. Be2 Nbd7 11. Nd5 Bxd5 12. exd5 Qc7 13. Rc1 h4 14. 0-0 Nh5 15. Rfd1 0-0 16. c4 b6 17. Na1 a5 18. Nc2 Nc5 19. Na3 f5 20. Nb5 Qd7 21. b3 Rf6 22. Qc2 Rg6 23. a3 Bg5 24. Bxg5 Rxg5 25. Kh1 a4 26. b4 Nb3 27. Rb1 Qe7 28. Bf1 Rf8 29. Qf2 Rf6 30. Qxb6 Rfg6 31. Rb2 h3 32. Qc7 hxg2+ 33. Bxg2 Qxc7 34. Nxc7 Nf4 35. Rg1 Nd3 36. Ra2 Nd4 37. Ne6 Nxe6 38. dxe6 Rxe6 39. Bf1 Rxg1+ 40. Kxg1 Nf4 41. b5 Kf8 42. Rb2 Re8 43. Rb4 Ra8 44. b6 Rb8 45. Rxa4 Rxb6 46. Rb4 Rc6 47. a4 Ne6 48. Bd3 g6 49. Kf2 Nc5 50. Ke3 Ke7 51. Kd2 Ke6 52. Kc3 Ra6 53. Bc2 Ra8 54. Bb3 Rh8 55. a5 Rxh2 56. a6 Rh8 57. Rb6 Ra8 58. Rc6 Kd7 59. Rb6 Kc7 0-1

[Event "Malopolska-ch"]
[Site "Krakow"]
[Date "2025.06.22"]
[Round "7"]
[White "Gradalski, Olaf"]
[Black "Sieciechowicz, Marcin"]
[Result "0-1"]
[ECO "C54"]
[WhiteElo "2031"]
[BlackElo "2413"]
[PlyCount "128"]
[EventDate "2025.06.19"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "POL"]
[SourceTitle "CB26_2025"]
[SourceDate "2025.06.25"]
[SourceVersion "1"]
[SourceVersionDate "2025.06.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d3 0-0 6. 0-0 d6 7. a4 a5 8. Nbd2 Bb6 9. Bb3 Be6 10. Bxe6 fxe6 11. Nc4 Ba7 12. Be3 Bxe3 13. fxe3 Qe7 14. Qb3 b6 15. Qb5 Na7 16. Qb3 Nc6 17. Qb5 Qd7 18. b4 Rfb8 19. Rfc1 Rb7 20. h3 Rba7 21. g4 axb4 22. cxb4 Nd8 23. Qxd7 Nxd7 24. a5 bxa5 25. Rxa5 Rxa5 26. bxa5 Nc5 27. Rc3 Nc6 28. Ncxe5 Nxe5 29. Nxe5 Rxa5 30. Nf3 e5 31. d4 Ra1+ 32. Kg2 Ra2+ 33. Kg1 Ra1+ 34. Kg2 Ra2+ 35. Kg1 exd4 36. exd4 Ra1+ 37. Kg2 Ra2+ 38. Kg1 Ne6 39. d5 Nf4 40. Rxc7 Nxh3+ 41. Kh1 Nf2+ 42. Kg1 Nh3+ 43. Kh1 Nf2+ 44. Kg1 Nxe4 45. Nd4 Rd2 46. Nf5 g6 47. Nh6+ Kf8 48. Rxh7 Ng5 49. Ra7 Rxd5 50. Kf2 Rd3 51. Ke2 Rd4 52. Ke3 Re4+ 53. Kd3 Re5 54. Rd7 Rd5+ 55. Ke3 Rd1 56. Kf4 Ne6+ 57. Kg3 Ng5 58. Kf4 Rd5 59. Nf5 Ne6+ 60. Ke4 Re5+ 61. Kf3 gxf5 62. Rxd6 f4 63. g5 Ke7 64. Ra6 Rxg5 0-1

[Event "Malopolska-ch"]
[Site "Krakow"]
[Date "2025.06.21"]
[Round "6"]
[White "Sieciechowicz, Marcin"]
[Black "Wnek, Filip"]
[Result "1-0"]
[ECO "E32"]
[WhiteElo "2413"]
[BlackElo "2161"]
[PlyCount "59"]
[EventDate "2025.06.19"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "POL"]
[SourceTitle "CB26_2025"]
[SourceDate "2025.06.25"]
[SourceVersion "1"]
[SourceVersionDate "2025.06.25"]
[SourceQuality "1"]

1. d4 f5 2. c4 Nf6 3. Nf3 e6 4. g3 Bb4+ 5. Nbd2 b6 6. Bg2 Bb7 7. 0-0 0-0 8. Qc2 Qe8 9. b3 Qh5 10. Bb2 Ne4 11. Nxe4 Bxe4 12. Qd1 Rf6 13. c5 Rh6 14. h4 d6 15. a3 Bxc5 16. dxc5 bxc5 17. b4 Nd7 18. bxc5 Nxc5 19. Rc1 f4 20. Bd4 Rg6 21. Bxc5 dxc5 22. Rc4 Bd5 23. Rxf4 Rb8 24. e4 Bc4 25. Ng5 Be2 26. Qd7 Rh6 27. Bf3 Bxf3 28. Rxf3 c4 29. Qxc7 Re8 30. Qf7+ 1-0

[Event "Malopolska-ch"]
[Site "Krakow"]
[Date "2025.06.21"]
[Round "5"]
[White "Skarbarchuk, Tetyana"]
[Black "Sieciechowicz, Marcin"]
[Result "1/2-1/2"]
[ECO "C14"]
[WhiteElo "2023"]
[BlackElo "2413"]
[PlyCount "91"]
[EventDate "2025.06.19"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "POL"]
[SourceTitle "CB26_2025"]
[SourceDate "2025.06.25"]
[SourceVersion "1"]
[SourceVersionDate "2025.06.25"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Be7 5. e5 Nfd7 6. Bxe7 Qxe7 7. f4 a6 8. Qd2 b6 9. Nce2 c5 10. c3 Nc6 11. Nf3 a5 12. g4 f6 13. Bg2 Ba6 14. Rc1 a4 15. 0-0 Bc4 16. Qe3 0-0 17. exf6 Nxf6 18. h3 Bxa2 19. Nd2 Qd6 20. Ra1 Bb3 21. g5 Nd7 22. Nxb3 axb3 23. Rxa8 Rxa8 24. f5 exf5 25. Nf4 Kh8 26. Bxd5 cxd4 27. cxd4 Rb8 28. Rc1 Na5 29. h4 b5 30. Bf7 Nc4 31. Bxc4 bxc4 32. Rxc4 Nf8 33. Rc5 Ng6 34. Rxf5 Nxh4 35. Rd5 Qf8 36. Qf2 Ng6 37. Nxg6+ hxg6 38. Qxf8+ Rxf8 39. Kg2 Kg8 40. Rb5 Rf4 41. Rxb3 Rxd4 42. Kg3 Kf7 43. Re3 Rb4 44. b3 Rb5 45. Kg4 Rb4+ 46. Kg3 1/2-1/2

[Event "Malopolska-ch"]
[Site "Krakow"]
[Date "2025.06.20"]
[Round "3"]
[White "Semenukha, Nikita"]
[Black "Sieciechowicz, Marcin"]
[Result "0-1"]
[ECO "C11"]
[WhiteElo "2057"]
[BlackElo "2413"]
[PlyCount "86"]
[EventDate "2025.06.19"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "POL"]
[SourceTitle "CB26_2025"]
[SourceDate "2025.06.25"]
[SourceVersion "1"]
[SourceVersionDate "2025.06.25"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. f4 c5 6. Nf3 Nc6 7. Be3 Be7 8. Qd2 0-0 9. dxc5 Bxc5 10. 0-0-0 Qb6 11. Nd4 Nxd4 12. Bxd4 Bxd4 13. Qxd4 Qxd4 14. Rxd4 Nb6 15. Bd3 Bd7 16. g4 Bc6 17. Re1 Rae8 18. b4 a6 19. Kb2 f6 20. Kb3 Nd7 21. a4 fxe5 22. fxe5 Rf2 23. b5 Nc5+ 24. Kb4 Nxd3+ 25. cxd3 Bd7 26. Re2 Rf1 27. Ka5 axb5 28. axb5 Rc1 29. Ne4 b6+ 30. Kb4 Rec8 31. Rb2 dxe4 32. Rxd7 e3 33. Ra7 R1c5 34. Rb7 Rxe5 35. Re2 Rd8 36. Kc4 Rc5+ 37. Kb4 Rd4+ 38. Kb3 Rxd3+ 39. Kb4 Re5 40. Kc4 Rd2 41. Re1 e2 42. Ra1 h6 43. Raa7 Rg5 0-1

[Event "Malopolska-ch"]
[Site "Krakow"]
[Date "2025.06.20"]
[Round "4"]
[White "Sieciechowicz, Marcin"]
[Black "Fistek, Dariusz"]
[Result "1/2-1/2"]
[ECO "E12"]
[WhiteElo "2413"]
[BlackElo "2172"]
[PlyCount "27"]
[EventDate "2025.06.19"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "POL"]
[SourceTitle "CB26_2025"]
[SourceDate "2025.06.25"]
[SourceVersion "1"]
[SourceVersionDate "2025.06.25"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. a3 Ba6 5. Nbd2 Bb7 6. Qc2 c5 7. d5 exd5 8. cxd5 Nxd5 9. e4 Nc7 10. Bd3 Nc6 11. e5 d5 12. exd6 Bxd6 13. 0-0 Ne6 14. Nc4 1/2-1/2

[Event "Malopolska-ch"]
[Site "Krakow"]
[Date "2025.06.19"]
[Round "1"]
[White "Cichon, Bartlomiej"]
[Black "Sieciechowicz, Marcin"]
[Result "1-0"]
[ECO "B90"]
[WhiteElo "2101"]
[BlackElo "2413"]
[PlyCount "101"]
[EventDate "2025.06.19"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "POL"]
[SourceTitle "CB26_2025"]
[SourceDate "2025.06.25"]
[SourceVersion "1"]
[SourceVersionDate "2025.06.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. h3 e5 7. Nde2 h5 8. g3 Be7 9. Bg2 b5 10. Nd5 Nxd5 11. Qxd5 Ra7 12. Be3 Rb7 13. g4 h4 14. Qd2 Nd7 15. 0-0 0-0 16. Nc3 Nf6 17. b4 Be6 18. a4 Qd7 19. axb5 axb5 20. Ra6 Rc8 21. Rfa1 Rbc7 22. Ra7 Qc6 23. Nd5 Bxd5 24. exd5 Qc4 25. Rxc7 Rxc7 26. Ra8+ Bf8 27. g5 Ne4 28. Qd3 Qxd3 29. cxd3 Nc3 30. Bf3 g6 31. Rb8 Kg7 32. Bb6 Rd7 33. Bg4 Re7 34. Bd8 Ra7 35. Bf6+ Kg8 36. Bf3 Ra1+ 37. Kg2 Ra7 38. Kh2 Rc7 39. Kg1 Ra7 40. Kg2 Rc7 41. Kf1 Ra7 42. Ke1 Rc7 43. Kd2 Nb1+ 44. Ke3 Na3 45. Bd1 Nb1 46. Bb3 Nc3 47. f3 Ra7 48. Kd2 Rc7 49. Bd8 Nb1+ 50. Kd1 Ra7 51. Kc2 1-0

[Event "Malopolska-ch"]
[Site "Krakow"]
[Date "2025.06.19"]
[Round "2"]
[White "Sieciechowicz, Marcin"]
[Black "Orzechowski, Jacek"]
[Result "1-0"]
[ECO "D94"]
[WhiteElo "2413"]
[BlackElo "2036"]
[PlyCount "103"]
[EventDate "2025.06.19"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "POL"]
[SourceTitle "CB26_2025"]
[SourceDate "2025.06.25"]
[SourceVersion "1"]
[SourceVersionDate "2025.06.25"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 g6 5. e3 Bg7 6. Be2 0-0 7. 0-0 dxc4 8. Bxc4 Bg4 9. h3 Bxf3 10. Qxf3 Nbd7 11. Rd1 e5 12. d5 e4 13. Nxe4 Nxe4 14. Qxe4 Nf6 15. Qf3 cxd5 16. Bb3 Qb6 17. Bd2 a5 18. Bc3 a4 19. Bd4 Qe6 20. Bxd5 Qxd5 21. Qxd5 Nxd5 22. Bxg7 Kxg7 23. Rxd5 a3 24. Rb1 Rfc8 25. bxa3 Rxa3 26. Rd2 Rca8 27. Rbb2 b5 28. Kf1 b4 29. Ke2 Rb8 30. Rd3 Ra4 31. Kd1 Rba8 32. Rdd2 Ra3 33. Kc1 Rb8 34. Rb3 Ra4 35. Kb1 Rc8 36. Rd4 Rca8 37. Rb2 Rb8 38. e4 h5 39. e5 Rb7 40. f4 Rb6 41. g4 hxg4 42. hxg4 Kf8 43. Rb3 Ke7 44. Rbd3 Ra7 45. Rd6 Rb5 46. f5 gxf5 47. gxf5 Kf8 48. f6 Kg8 49. Rd8+ Kh7 50. Rg3 Rxe5 51. Rg7+ Kh6 52. Rh8# 1-0

[Event "Titled Tuesday intern op 03rd Jan Late"]
[Site "Chess.com INT"]
[Date "2025.06.03"]
[Round "2"]
[White "Ferraz, Michel Liah"]
[Black "Sieciechowicz, Marcin"]
[Result "0-1"]
[ECO "D80"]
[WhiteElo "1998"]
[BlackElo "2410"]
[PlyCount "132"]
[EventDate "2025.06.03"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB24_2025"]
[SourceDate "2025.06.11"]
[SourceVersion "1"]
[SourceVersionDate "2025.06.11"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. Bg5 Ne4 6. Bf4 Nxc3 7. bxc3 0-0 8. e3 c5 9. Rb1 Nc6 10. Be2 dxc4 11. Bxc4 cxd4 12. cxd4 Qa5+ 13. Qd2 Qxd2+ 14. Kxd2 b6 15. Rbc1 Bb7 16. Ke2 Rac8 17. h4 Na5 18. Bd3 Bd5 19. Ba6 Bb7 20. Bxb7 Nxb7 21. h5 Rfd8 22. hxg6 hxg6 23. Ne5 Bxe5 24. Bxe5 f6 25. Bf4 Nd6 26. Rxc8 Rxc8 27. Bxd6 exd6 28. Kd2 Kg7 29. Rb1 Kf7 30. g4 Rc4 31. Kd3 Ra4 32. Rb2 Ke6 33. f4 Ra3+ 34. Ke4 d5+ 35. Kf3 Kd6 36. g5 fxg5 37. fxg5 Rc3 38. Rh2 Ke6 39. Kf4 Rc1 40. Rh6 Rf1+ 41. Kg3 Kf5 42. Rh7 Kxg5 43. Rxa7 Rb1 44. Rd7 Rb5 45. Rd6 Kf5 46. Kf3 g5 47. Rd8 g4+ 48. Kg3 Ra5 49. Rf8+ Ke4 50. Re8+ Kd3 51. Kxg4 Rxa2 52. Re6 b5 53. Re5 Kc4 54. e4 dxe4 55. Rxe4 Rd2 56. Kf5 Rxd4 57. Re8 b4 58. Rc8+ Kd3 59. Ke5 Rd7 60. Rb8 Kc3 61. Ke4 b3 62. Ke3 b2 63. Rc8+ Kb3 64. Rb8+ Kc2 65. Ra8 Rc7 66. Rc8 Rxc8 0-1

[Event "Titled Tuesday intern op 03rd Jan Late"]
[Site "Chess.com INT"]
[Date "2025.06.03"]
[Round "6"]
[White "Ghafourian, Amir Ali"]
[Black "Sieciechowicz, Marcin"]
[Result "1-0"]
[ECO "C02"]
[WhiteElo "2111"]
[BlackElo "2410"]
[PlyCount "55"]
[EventDate "2025.06.03"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB24_2025"]
[SourceDate "2025.06.11"]
[SourceVersion "1"]
[SourceVersionDate "2025.06.11"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Bd7 6. Be2 Qc7 7. 0-0 Nge7 8. Na3 a6 9. Nc2 Ng6 10. g3 f6 11. h4 fxe5 12. h5 Nge7 13. dxe5 Nxe5 14. Bf4 Nxf3+ 15. Bxf3 Qc6 16. Re1 0-0-0 17. b4 Nf5 18. bxc5 Bxc5 19. Nd4 Qa4 20. Nxe6 Qxd1 21. Raxd1 Bxe6 22. Rxe6 Ne7 23. c4 dxc4 24. Rc1 b5 25. Rxa6 Kd7 26. a4 bxa4 27. Rxc4 Rc8 28. Bg4+ 1-0

[Event "Titled Tuesday intern op 03rd Jan Late"]
[Site "Chess.com INT"]
[Date "2025.06.03"]
[Round "7"]
[White "Sieciechowicz, Marcin"]
[Black "Cornelisse, Lorelei"]
[Result "1-0"]
[ECO "A80"]
[WhiteElo "2410"]
[BlackElo "2132"]
[PlyCount "129"]
[EventDate "2025.06.03"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB24_2025"]
[SourceDate "2025.06.11"]
[SourceVersion "1"]
[SourceVersionDate "2025.06.11"]
[SourceQuality "1"]

1. d4 f5 2. Nc3 Nf6 3. Bg5 d5 4. Bxf6 exf6 5. e3 Be6 6. Bd3 Bb4 7. Nge2 Bf7 8. h4 Qd7 9. a3 Bd6 10. Qd2 Nc6 11. 0-0-0 0-0-0 12. Kb1 Kb8 13. Bb5 a6 14. Bxc6 Qxc6 15. Nf4 g5 16. Nd3 h6 17. Nb4 Bxb4 18. axb4 Qc4 19. Ne2 Bh5 20. Rde1 Bxe2 21. Rxe2 Rde8 22. Ree1 Re4 23. g3 Re6 24. c3 Rhe8 25. Qe2 Qb3 26. Qc2 Qxc2+ 27. Kxc2 c6 28. hxg5 fxg5 29. Kd2 Kc8 30. Rh5 Kd7 31. Reh1 Rh8 32. Rxg5 hxg5 33. Rxh8 Re7 34. Rh5 g4 35. Rxf5 Rh7 36. Rf4 Rg7 37. Ke2 Kc7 38. e4 dxe4 39. Rxe4 Kb6 40. Re5 Rg6 41. f3 gxf3+ 42. Kxf3 Rf6+ 43. Ke3 Rf1 44. g4 Rb1 45. g5 Rxb2 46. Kf3 Rc2 47. g6 Rxc3+ 48. Kf4 Rc1 49. g7 Rf1+ 50. Kg5 Rg1+ 51. Kf6 Rg4 52. Rg5 Rf4+ 53. Ke7 Re4+ 54. Kf7 Rf4+ 55. Kg6 Rxd4 56. g8Q Rd6+ 57. Kf5 Rd4 58. Ke5 Rxb4 59. Qd8+ Kb5 60. Rg7 Rc4 61. Rxb7+ Ka4 62. Qd1+ Ka5 63. Qa1+ Ra4 64. Qc3+ Rb4 65. Qxb4# 1-0

[Event "Titled Tuesday intern op 03rd Jan Late"]
[Site "Chess.com INT"]
[Date "2025.06.03"]
[Round "5"]
[White "Sieciechowicz, Marcin"]
[Black "Minko, Dmitry"]
[Result "1-0"]
[ECO "D31"]
[WhiteElo "2410"]
[BlackElo "2247"]
[PlyCount "157"]
[EventDate "2025.06.03"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB24_2025"]
[SourceDate "2025.06.11"]
[SourceVersion "1"]
[SourceVersionDate "2025.06.11"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Be7 4. cxd5 exd5 5. Bf4 c6 6. e3 Bf5 7. g4 Be6 8. h4 h6 9. Bd3 Nf6 10. f3 c5 11. Nge2 Nc6 12. h5 a6 13. Rc1 cxd4 14. Nxd4 Qb6 15. Nxe6 fxe6 16. Qb3 Qxb3 17. axb3 0-0 18. Ke2 e5 19. Bg3 d4 20. Ne4 dxe3 21. Nxf6+ Bxf6 22. Rxc6 bxc6 23. Kxe3 a5 24. Ra1 Rfd8 25. Be1 Kh8 26. Bc3 e4 27. Bxe4 Bxc3 28. bxc3 Rab8 29. Rxa5 Rxb3 30. Rc5 Rd6 31. Bxc6 Rb8 32. Be4 Kg8 33. Rc7 Rbd8 34. c4 R6d7 35. Rc5 Kf7 36. Ra5 Rc7 37. c5 Rd1 38. c6 Kf6 39. Kf4 Rd6 40. Rc5 Ke6 41. Rc4 Kf6 42. Kg3 Re6 43. Kf4 Rd6 44. Ra4 Ke6 45. Ra8 Kf7 46. Rb8 Rdxc6 47. Bxc6 Rxc6 48. Rb7+ Kf6 49. Kg3 Rd6 50. Ra7 Rc6 51. Ra5 Rb6 52. Kf4 Rb4+ 53. Kg3 Rb6 54. Rf5+ Ke6 55. Rf4 Rb7 56. Kh4 Rb5 57. Re4+ Kf6 58. Rf4+ Ke6 59. Rf8 Rb7 60. g5 Rb4+ 61. f4 hxg5+ 62. Kxg5 Rb1 63. Kg6 Rg1+ 64. Kh7 Rh1 65. Kxg7 Rxh5 66. Kg6 Rh1 67. Re8+ Kd7 68. Re2 Rf1 69. f5 Rg1+ 70. Kf7 Rf1 71. f6 Rg1 72. Kf8 Rd1 73. f7 Rd3 74. Rg2 Rf3 75. Kg8 Ke7 76. Re2+ Kd7 77. f8Q Rg3+ 78. Qg7+ Rxg7+ 79. Kxg7 1-0

[Event "Titled Tuesday intern op 03rd Jan Late"]
[Site "Chess.com INT"]
[Date "2025.06.03"]
[Round "3"]
[White "Sieciechowicz, Marcin"]
[Black "Paravyan, David"]
[Result "1/2-1/2"]
[ECO "D35"]
[WhiteElo "2410"]
[BlackElo "2596"]
[PlyCount "50"]
[EventDate "2025.06.03"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB24_2025"]
[SourceDate "2025.06.11"]
[SourceVersion "1"]
[SourceVersionDate "2025.06.11"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 c5 7. Rb1 Be7 8. Nf3 0-0 9. h4 b6 10. h5 h6 11. Rh3 Kh8 12. Bd3 Ba6 13. Rg3 Bxd3 14. Qxd3 Nc6 15. Qe3 cxd4 16. cxd4 Rc8 17. Kf1 e5 18. d5 f5 19. exf5 Qxd5 20. Rxg7 Kxg7 21. Qxh6+ Kg8 22. Qg6+ Kh8 23. Qh6+ Kg8 24. Qg6+ Kh8 25. Qh6+ Kg8 1/2-1/2

[Event "Titled Tuesday intern op 03rd Jan Late"]
[Site "Chess.com INT"]
[Date "2025.06.03"]
[Round "1"]
[White "Sieciechowicz, Marcin"]
[Black "Rosenberg, Evan"]
[Result "1-0"]
[ECO "D17"]
[WhiteElo "2410"]
[BlackElo "1989"]
[PlyCount "101"]
[EventDate "2025.06.03"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB24_2025"]
[SourceDate "2025.06.11"]
[SourceVersion "1"]
[SourceVersionDate "2025.06.11"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. Nf3 dxc4 5. a4 Bf5 6. Ne5 Nbd7 7. Nxc4 Qc7 8. Qd2 g6 9. Qf4 Qxf4 10. Bxf4 Bg7 11. h3 0-0 12. e3 Nb6 13. Nxb6 axb6 14. Be2 Ne4 15. Nxe4 Bxe4 16. 0-0 c5 17. Be5 Bxe5 18. dxe5 Bc2 19. Bb5 Rfd8 20. Rfc1 Rd2 21. Kf1 Bd3+ 22. Bxd3 Rxd3 23. Rc3 Rd2 24. Rb3 Ra6 25. Rb5 g5 26. g4 Kg7 27. a5 h6 28. Ra3 Rxa5 29. Raxa5 bxa5 30. Rxb7 e6 31. Kg2 a4 32. Kg3 c4 33. f4 gxf4+ 34. exf4 Rd3+ 35. Kg2 Rb3 36. Ra7 Rxb2+ 37. Kf3 Rb3+ 38. Ke4 a3 39. h4 c3 40. Kd3 h5 41. gxh5 Rb4 42. f5 exf5 43. e6 Kf6 44. exf7 Kg7 45. h6+ Kf8 46. h7 Rxh4 47. h8Q+ Rxh8 48. Ra8+ Kg7 49. Rxh8 c2 50. f8Q+ Kg6 51. Rh6+ 1-0

[Event "Titled Tuesday intern op 03rd Jan Late"]
[Site "Chess.com INT"]
[Date "2025.06.03"]
[Round "4"]
[White "Yadegar, Radin"]
[Black "Sieciechowicz, Marcin"]
[Result "1-0"]
[ECO "C00"]
[WhiteElo "2387"]
[BlackElo "2410"]
[PlyCount "67"]
[EventDate "2025.06.03"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB24_2025"]
[SourceDate "2025.06.11"]
[SourceVersion "1"]
[SourceVersionDate "2025.06.11"]
[SourceQuality "1"]

1. Nc3 d5 2. e4 e6 3. g3 Nf6 4. Bg2 Be7 5. e5 Nfd7 6. d4 c5 7. f4 Nc6 8. Nce2 cxd4 9. Nf3 Qb6 10. Nfxd4 Nxd4 11. Nxd4 0-0 12. 0-0 Nc5 13. c3 Bd7 14. Qe2 Na4 15. Kh1 Rac8 16. f5 exf5 17. Nxf5 Bxf5 18. Rxf5 d4 19. cxd4 Qxd4 20. Be3 Qxb2 21. Qxb2 Nxb2 22. Bxb7 Rcd8 23. Raf1 Nc4 24. Bg1 g6 25. R5f4 Nxe5 26. Ra4 Rd7 27. Rxa7 Rfd8 28. Bg2 Nc4 29. Rxd7 Rxd7 30. a4 Rd2 31. Rc1 Ne5 32. a5 Ra2 33. Bb6 Nd3 34. Rf1 1-0

[Event "Titled Tuesday intern op 03rd Jan Late"]
[Site "Chess.com INT"]
[Date "2025.06.03"]
[Round "8"]
[White "Yanev, Tihomir"]
[Black "Sieciechowicz, Marcin"]
[Result "1-0"]
[ECO "C07"]
[WhiteElo "2354"]
[BlackElo "2410"]
[PlyCount "81"]
[EventDate "2025.06.03"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB24_2025"]
[SourceDate "2025.06.11"]
[SourceVersion "1"]
[SourceVersionDate "2025.06.11"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 cxd4 5. exd5 Qxd5 6. Bc4 Qd6 7. 0-0 Nf6 8. Nb3 Nc6 9. Nbxd4 Nxd4 10. Nxd4 Be7 11. c3 0-0 12. Qf3 Qb6 13. Bb3 Bd7 14. Be3 Qc7 15. Rad1 a5 16. Bc2 Bc6 17. Qh3 Qe5 18. Rfe1 Qh5 19. Nxc6 bxc6 20. Qxh5 Nxh5 21. Rd7 Bd8 22. Bc5 Re8 23. Rb7 Nf6 24. Rd1 Nd5 25. c4 Nb4 26. Be4 Rc8 27. a3 Na6 28. Bd6 Bf6 29. b4 axb4 30. axb4 Bc3 31. Bxc6 Rxc6 32. b5 Rcc8 33. bxa6 Red8 34. a7 Ra8 35. c5 f6 36. Kf1 Be5 37. Ke2 Bxd6 38. Rxd6 Rdc8 39. c6 Kf8 40. Rdd7 Ke8 41. Rxg7 1-0

[Event "Titled Tuesday intern op 20th May Late"]
[Site "Chess.com INT"]
[Date "2025.05.20"]
[Round "6"]
[White "Sieciechowicz, Marcin"]
[Black "Ersoz, Teoman Guney"]
[Result "0-1"]
[ECO "D01"]
[WhiteElo "2410"]
[BlackElo "2090"]
[PlyCount "80"]
[EventDate "2025.05.20"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB22_2025"]
[SourceDate "2025.05.28"]
[SourceVersion "1"]
[SourceVersionDate "2025.05.28"]
[SourceQuality "1"]

1. d4 Nf6 2. Nc3 d5 3. Bg5 Nbd7 4. Qd3 h6 5. Bh4 e6 6. 0-0-0 Be7 7. f3 c5 8. e4 cxd4 9. Qxd4 e5 10. Qa4 d4 11. Bxf6 Bxf6 12. Nd5 0-0 13. f4 Nc5 14. Qa3 Nxe4 15. Nxf6+ Qxf6 16. fxe5 Qg5+ 17. Kb1 Nf2 18. Nf3 Qe3 19. Bd3 Nxh1 20. Rxh1 Be6 21. Re1 Qf2 22. Qe7 Bd5 23. Rf1 Qxg2 24. Nxd4 Qg5 25. Qb4 Qxe5 26. Nf5 Be6 27. Re1 Qf6 28. Ng3 Rfe8 29. Rf1 Qg5 30. Ne4 Qe5 31. Rg1 Bf5 32. Nd6 Bxd3 33. Nxe8 Bxc2+ 34. Kxc2 Rxe8 35. Rg4 Qe2+ 36. Kb3 Qd3+ 37. Ka4 Re6 38. Qc4 b5+ 39. Qxb5 Ra6+ 40. Kb4 Rb6 0-1

[Event "Titled Tuesday intern op 20th May Late"]
[Site "Chess.com INT"]
[Date "2025.05.20"]
[Round "1"]
[White "Sieciechowicz, Marcin"]
[Black "Iglesias Ferreira, Andres"]
[Result "1-0"]
[ECO "D53"]
[WhiteElo "2410"]
[BlackElo "2279"]
[PlyCount "103"]
[EventDate "2025.05.20"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB22_2025"]
[SourceDate "2025.05.28"]
[SourceVersion "1"]
[SourceVersionDate "2025.05.28"]
[SourceQuality "1"]

1. d4 c6 2. c4 d5 3. Nf3 Nf6 4. Nc3 e6 5. Bg5 Be7 6. e3 h6 7. Bh4 0-0 8. Qc2 a6 9. cxd5 cxd5 10. Bd3 Nc6 11. a3 b5 12. Nxb5 axb5 13. Qxc6 b4 14. 0-0 Bd7 15. Qc2 bxa3 16. Bxf6 Bxf6 17. Rxa3 Rxa3 18. bxa3 Qa5 19. Ra1 Ba4 20. Qd2 Qxd2 21. Nxd2 Rb8 22. Kf1 Rb2 23. Ke2 Be7 24. g4 g6 25. h3 Kf8 26. Ke1 Bh4 27. Rb1 Bxf2+ 28. Ke2 Rxb1 29. Nxb1 Bh4 30. Nc3 Bd7 31. Bb5 Ke7 32. Kd3 Kd6 33. a4 Bd8 34. e4 Ba5 35. e5+ Kc7 36. Bxd7 Kxd7 37. Nb5 Bd8 38. Nd6 f6 39. Nf7 Be7 40. Nxh6 fxe5 41. dxe5 Bg5 42. Nf7 Bf4 43. h4 Ke7 44. a5 Bg3 45. a6 Bf2 46. Nd6 Kd7 47. h5 gxh5 48. gxh5 Kc6 49. h6 Bg3 50. h7 Bxe5 51. a7 Kxd6 52. a8Q 1-0

[Event "Titled Tuesday intern op 20th May Late"]
[Site "Chess.com INT"]
[Date "2025.05.20"]
[Round "4"]
[White "Sieciechowicz, Marcin"]
[Black "Naranjo Moreno, Antonio"]
[Result "0-1"]
[ECO "E73"]
[WhiteElo "2410"]
[BlackElo "2289"]
[PlyCount "68"]
[EventDate "2025.05.20"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB22_2025"]
[SourceDate "2025.05.28"]
[SourceVersion "1"]
[SourceVersionDate "2025.05.28"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 0-0 6. Be3 e5 7. d5 Na6 8. h4 Nc5 9. Qc2 a5 10. h5 Nxh5 11. Bxh5 gxh5 12. Nge2 f5 13. Bxc5 dxc5 14. 0-0-0 fxe4 15. Nxe4 Bf5 16. N2c3 Bg6 17. Kb1 Rf4 18. f3 h4 19. Ka1 a4 20. Nxa4 Bxe4 21. fxe4 Qg5 22. Nxc5 Qg3 23. Rh3 Qg4 24. Rdh1 b6 25. Ne6 Rxe4 26. Nxc7 Rxc4 27. Qxc4 Qxc4 28. Nxa8 Qxd5 29. Nxb6 Qxg2 30. Rxh4 e4 31. Rb1 e3 32. Na4 Qc2 33. Rg4 e2 34. Nc3 Qxb1+ 0-1

[Event "Titled Tuesday intern op 20th May Late"]
[Site "Chess.com INT"]
[Date "2025.05.20"]
[Round "3"]
[White "Sieciechowicz, Marcin"]
[Black "Xiong, Jeffery"]
[Result "0-1"]
[ECO "D36"]
[WhiteElo "2410"]
[BlackElo "2636"]
[PlyCount "124"]
[EventDate "2025.05.20"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB22_2025"]
[SourceDate "2025.05.28"]
[SourceVersion "1"]
[SourceVersionDate "2025.05.28"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. cxd5 exd5 5. Bg5 Be7 6. e3 h6 7. Bh4 0-0 8. Bd3 Re8 9. Nf3 c6 10. 0-0 Ne4 11. Bxe7 Qxe7 12. Qc2 Nd7 13. Nd2 Ndf6 14. Nf3 Ng4 15. h3 Ngf6 16. Ne5 Nd6 17. Rab1 a5 18. Na4 Nd7 19. Nxd7 Bxd7 20. Qc5 Bf5 21. Bxf5 Nxf5 22. Qxe7 Rxe7 23. Nc5 Nd6 24. Rfc1 a4 25. b3 a3 26. Nd3 g5 27. g3 Kg7 28. Kg2 Nb5 29. Ne5 f6 30. Nd3 h5 31. Rc2 Kg6 32. Rh1 Kf5 33. h4 Rh8 34. Nc5 Kg6 35. Kf3 Rhe8 36. hxg5 fxg5 37. Nd3 Re4 38. Ne5+ Kf5 39. Kg2 h4 40. gxh4 Rxh4 41. Rcc1 Reh8 42. Rxh4 Rxh4 43. f3 Nxd4 44. exd4 Rxd4 45. Nxc6 Rd2+ 46. Kg3 bxc6 47. Rxc6 Rxa2 48. Ra6 Ra1 49. b4 a2 50. Kg2 d4 51. b5 d3 52. b6 d2 53. Ra5+ Kg6 54. b7 d1Q 55. Ra6+ Kh5 56. b8Q Qh1+ 57. Kf2 Rf1+ 58. Ke2 Qxf3+ 59. Kd2 Rd1+ 60. Kc2 Qd3+ 61. Kb2 Qb1+ 62. Kc3 Qxb8 0-1

[Event "Titled Tuesday intern op 20th May Late"]
[Site "Chess.com INT"]
[Date "2025.05.20"]
[Round "5"]
[White "Tayar, Jonathan"]
[Black "Sieciechowicz, Marcin"]
[Result "1/2-1/2"]
[ECO "C01"]
[WhiteElo "2325"]
[BlackElo "2410"]
[PlyCount "163"]
[EventDate "2025.05.20"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB22_2025"]
[SourceDate "2025.05.28"]
[SourceVersion "1"]
[SourceVersionDate "2025.05.28"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Nc3 Nf6 5. Bd3 Bd6 6. Bg5 c6 7. Nge2 Bg4 8. f3 Bh5 9. Nf4 Bg6 10. Nxg6 hxg6 11. Qd2 Bg3+ 12. Kf1 Bd6 13. Re1+ Kf8 14. g4 Nbd7 15. Kg2 Qc7 16. h4 Kg8 17. Rh3 Nf8 18. Ne2 Ne6 19. Reh1 Re8 20. c3 c5 21. Bb5 Rd8 22. Ba4 Qa5 23. Bb3 c4 24. Bc2 Qxa2 25. Bb1 Qa5 26. Be3 b5 27. h5 gxh5 28. g5 b4 29. gxf6 bxc3 30. bxc3 g6 31. f4 Rb8 32. f5 Nf8 33. fxg6 fxg6 34. f7+ Kg7 35. Bf4 Qc7 36. Rf1 Bxf4 37. Nxf4 Qd6 38. Rhf3 Rb3 39. Qf2 h4 40. Kh1 a5 41. Nh3 a4 42. Rf6 Qg3 43. Qxg3 hxg3 44. Kg2 Rxc3 45. Ng5 Rb3 46. Bxg6 Rb2+ 47. Kxg3 Nxg6 48. Ne6+ Kh7 49. Rxg6 Kxg6 50. f8Q Rxf8 51. Nxf8+ Kg7 52. Ne6+ Kg6 53. Nf4+ Kg7 54. Nxd5 Rd2 55. Kf4 Rxd4+ 56. Ke5 Rd3 57. Rc1 a3 58. Rxc4 a2 59. Ra4 Rd2 60. Nc3 Kf7 61. Nxa2 Ke7 62. Ra7+ Kd8 63. Nc3 Rd3 64. Nd5 Kc8 65. Kd6 Rd1 66. Rf7 Kb8 67. Rf8+ Kb7 68. Rf7+ Kb8 69. Rf2 Rd3 70. Rb2+ Ka7 71. Kc6 Rd1 72. Rb3 Rc1+ 73. Kd6 Ka8 74. Nc7+ Ka7 75. Kd7 Rc2 76. Kc8 Rb2 77. Ra3+ Kb6 78. Rc3 Ka5 79. Kd7 Kb4 80. Rc6 Rd2+ 81. Rd6 Rxd6+ 82. Kxd6 1/2-1/2

[Event "Titled Tuesday intern op 20th May Late"]
[Site "Chess.com INT"]
[Date "2025.05.20"]
[Round "2"]
[White "Zlatin, Alexander"]
[Black "Sieciechowicz, Marcin"]
[Result "0-1"]
[ECO "C00"]
[WhiteElo "2306"]
[BlackElo "2410"]
[PlyCount "132"]
[EventDate "2025.05.20"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB22_2025"]
[SourceDate "2025.05.28"]
[SourceVersion "1"]
[SourceVersionDate "2025.05.28"]
[SourceQuality "1"]

1. e4 e6 2. Qe2 c5 3. f4 Nc6 4. Nf3 d6 5. c3 g6 6. g3 Bg7 7. Bg2 Nge7 8. 0-0 0-0 9. d3 b5 10. Be3 b4 11. d4 bxc3 12. bxc3 cxd4 13. cxd4 Qa5 14. Nbd2 Ba6 15. Nc4 Qa4 16. Rfc1 d5 17. exd5 exd5 18. Nb2 Bxe2 19. Nxa4 Bxf3 20. Bxf3 Nxd4 21. Bd1 Ndf5 22. Bc5 Bxa1 23. Rxa1 h5 24. Kf2 Rfd8 25. h3 Nd6 26. Kf3 Nef5 27. g4 Ng7 28. Bb3 Ne4 29. Bxd5 Nxc5 30. Bxa8 Nxa4 31. Bc6 Nb6 32. a4 Ne6 33. Be4 Nc5 34. Bc6 Rd6 35. Bb5 a6 36. Be2 Nbxa4 37. gxh5 gxh5 38. f5 Nc3 39. Bc4 Rd4 40. Bxa6 Nxa6 41. Rxa6 Rd3+ 42. Kf4 Rxh3 43. Kg5 Kg7 44. f6+ Kh7 45. Ra7 Ne4+ 46. Kf5 Nd6+ 47. Ke5 Rd3 48. Ra6 Kg6 49. Ra1 Nf5 50. Rf1 h4 51. Kf4 Rd4+ 52. Ke5 Rg4 53. Rd1 h3 54. Rd8 Nh6 55. Rd3 Rh4 56. Rg3+ Kh5 57. Rg1 h2 58. Rh1 Ng4+ 59. Kf5 Nf2 60. Rc1 h1Q 61. Rc8 Qf3+ 62. Ke5 Re4+ 63. Kd5 Qd3+ 64. Kc6 Rc4+ 65. Kb7 Qb3+ 66. Ka8 Ra4# 0-1

[Event "Titled Tuesday intern op 18th Mar Late"]
[Site "Chess.com INT"]
[Date "2025.03.18"]
[Round "2"]
[White "Bogaudinov, Rushan"]
[Black "Sieciechowicz, Marcin"]
[Result "0-1"]
[ECO "C01"]
[WhiteElo "1912"]
[BlackElo "2401"]
[PlyCount "134"]
[EventDate "2025.03.18"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB13_2025"]
[SourceDate "2025.03.26"]
[SourceVersion "1"]
[SourceVersionDate "2025.03.26"]
[SourceQuality "1"]

1. e4 e6 2. Nf3 d5 3. exd5 exd5 4. d4 Bd6 5. Bd3 Nf6 6. h3 h6 7. 0-0 0-0 8. c4 c6 9. Nc3 dxc4 10. Bxc4 Nbd7 11. Bb3 Re8 12. Re1 Nf8 13. Rxe8 Qxe8 14. d5 cxd5 15. Nxd5 Nxd5 16. Bxd5 Qe7 17. Be3 Be6 18. Qb3 Bxd5 19. Qxd5 Rd8 20. Qb3 b6 21. Re1 Ne6 22. Kf1 Bc5 23. Bxc5 Qxc5 24. Ne5 Rd5 25. Nf3 Qb5+ 26. Qxb5 Rxb5 27. b3 Rc5 28. g3 Rc3 29. Re3 Rxe3 30. fxe3 Kf8 31. Ke2 Ke7 32. Kd3 Kd6 33. Kc4 a6 34. b4 b5+ 35. Kd3 Ng5 36. Nxg5 hxg5 37. Kd4 f5 38. g4 g6 39. a3 Ke6 40. gxf5+ gxf5 41. Kc3 Kd5 42. Kd3 Ke5 43. Kd2 Ke4 44. Ke2 Ke5 45. Kd3 Kd5 46. Kc3 Ke4 47. Kd2 Kf3 48. Kd3 Kg3 49. Kd4 Kxh3 50. Ke5 Kg4 51. Kf6 f4 52. e4 f3 53. e5 f2 54. e6 f1Q+ 55. Kg7 Qe2 56. Kf7 Qf3+ 57. Ke8 Qxa3 58. Kd7 Qxb4 59. Kc6 Qe7 60. Kd5 Kf3 61. Kd4 g4 62. Kc3 g3 63. Kd4 Qxe6 64. Kc3 g2 65. Kd2 g1Q 66. Kc2 Qc5+ 67. Kd3 Qee3# 0-1

[Event "Titled Tuesday intern op 18th Mar Late"]
[Site "Chess.com INT"]
[Date "2025.03.18"]
[Round "4"]
[White "Di Benedetto, Guillermo"]
[Black "Sieciechowicz, Marcin"]
[Result "1-0"]
[ECO "A69"]
[WhiteElo "2289"]
[BlackElo "2401"]
[PlyCount "35"]
[EventDate "2025.03.18"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB13_2025"]
[SourceDate "2025.03.26"]
[SourceVersion "1"]
[SourceVersionDate "2025.03.26"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f4 0-0 6. Nf3 c5 7. d5 e6 8. Be2 exd5 9. cxd5 Re8 10. e5 dxe5 11. fxe5 Ng4 12. e6 fxe6 13. d6 Nc6 14. 0-0 Nd4 15. Ne4 Qb6 16. Nxd4 Bxd4+ 17. Kh1 Qc6 18. Bf3 1-0

[Event "Titled Tuesday intern op 18th Mar Late"]
[Site "Chess.com INT"]
[Date "2025.03.18"]
[Round "3"]
[White "Sieciechowicz, Marcin"]
[Black "Bok, Benjamin"]
[Result "0-1"]
[ECO "E35"]
[WhiteElo "2401"]
[BlackElo "2592"]
[PlyCount "68"]
[EventDate "2025.03.18"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB13_2025"]
[SourceDate "2025.03.26"]
[SourceVersion "1"]
[SourceVersionDate "2025.03.26"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 d5 5. cxd5 exd5 6. Bg5 h6 7. Bh4 Nc6 8. e3 g5 9. Bg3 h5 10. Bb5 h4 11. Be5 0-0 12. Bxc6 bxc6 13. h3 Rb8 14. Nge2 Nh5 15. Rc1 f6 16. Bh2 Bd6 17. Bxd6 cxd6 18. 0-0 Rf7 19. e4 dxe4 20. Nxe4 Rb6 21. d5 c5 22. f4 g4 23. f5 gxh3 24. gxh3 Rg7+ 25. Kh1 Qe7 26. N2c3 Qe5 27. Qf2 Ng3+ 28. Nxg3 hxg3 29. Qg2 Rxb2 30. Qxb2 g2+ 31. Qxg2 Rxg2 32. Kxg2 Bxf5 33. Rf3 c4 34. Rg3+ Kf7 0-1

[Event "Titled Tuesday intern op 18th Mar Late"]
[Site "Chess.com INT"]
[Date "2025.03.18"]
[Round "1"]
[White "Sieciechowicz, Marcin"]
[Black "Ratkovic, Petar"]
[Result "1/2-1/2"]
[ECO "D22"]
[WhiteElo "2401"]
[BlackElo "2302"]
[PlyCount "65"]
[EventDate "2025.03.18"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB13_2025"]
[SourceDate "2025.03.26"]
[SourceVersion "1"]
[SourceVersionDate "2025.03.26"]
[SourceQuality "1"]

1. d4 d5 2. c4 dxc4 3. Nf3 a6 4. e3 Bg4 5. Bxc4 e6 6. h3 Bh5 7. 0-0 Nf6 8. Nc3 Nc6 9. Be2 Bd6 10. b3 0-0 11. Bb2 Nd5 12. Nxd5 exd5 13. Rc1 Ne7 14. Ne5 Bxe2 15. Qxe2 f6 16. Nf3 c6 17. e4 dxe4 18. Qxe4 Nd5 19. Qe6+ Kh8 20. Rfe1 Re8 21. Qf5 Qa5 22. Rxe8+ Rxe8 23. Qd7 Rd8 24. Qxb7 Qxa2 25. Ba1 Nb4 26. Bc3 Qxb3 27. Bxb4 Qxb4 28. Qxa6 c5 29. Qc4 Qxc4 30. Rxc4 cxd4 31. Rxd4 Be7 32. Rxd8+ Bxd8 33. g4 1/2-1/2

[Event "Titled Tuesday intern op 04th Feb Late"]
[Site "Chess.com INT"]
[Date "2025.02.04"]
[Round "2"]
[White "Baloglu, Dila"]
[Black "Sieciechowicz, Marcin"]
[Result "1/2-1/2"]
[ECO "C01"]
[WhiteElo "1944"]
[BlackElo "2401"]
[PlyCount "63"]
[EventDate "2025.02.04"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB07_2025"]
[SourceDate "2025.02.12"]
[SourceVersion "1"]
[SourceVersionDate "2025.02.12"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. exd5 exd5 5. Bg5 Bb4 6. Qf3 Be6 7. 0-0-0 Nbd7 8. Bd3 0-0 9. Nge2 c5 10. dxc5 Qa5 11. Bf5 Bxc5 12. Bxf6 Nxf6 13. Nd4 Bxd4 14. Rxd4 Rac8 15. Bd3 Rc6 16. g4 Rfc8 17. g5 Ne4 18. Nxe4 dxe4 19. Qxe4 Qxg5+ 20. Kb1 g6 21. h4 Qh5 22. Rg1 Kh8 23. b3 Bf5 24. Qe5+ f6 25. Qe7 Bxd3 26. Rd8+ Rxd8 27. Qxd8+ Kg7 28. Qe7+ Kg8 29. Qe8+ Kg7 30. Qe7+ Kg8 31. Qe8+ Kg7 32. Qe7+ 1/2-1/2

[Event "Titled Tuesday intern op 04th Feb Late"]
[Site "Chess.com INT"]
[Date "2025.02.04"]
[Round "5"]
[White "Kiewra, Keaton F"]
[Black "Sieciechowicz, Marcin"]
[Result "0-1"]
[ECO "D01"]
[WhiteElo "2267"]
[BlackElo "2401"]
[PlyCount "44"]
[EventDate "2025.02.04"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB07_2025"]
[SourceDate "2025.02.12"]
[SourceVersion "1"]
[SourceVersionDate "2025.02.12"]
[SourceQuality "1"]

1. d4 Nf6 2. Bg5 g6 3. Nc3 d5 4. Qd2 Bg7 5. Bh6 0-0 6. h4 c5 7. Bxg7 Kxg7 8. h5 cxd4 9. hxg6 dxc3 10. Qh6+ Kg8 11. g7 Re8 12. 0-0-0 cxb2+ 13. Kb1 Bf5 14. e4 Nxe4 15. Rd3 Qa5 16. Nf3 Nc3+ 17. Kxb2 Qb4+ 18. Kc1 Nxa2+ 19. Kd1 Qb1+ 20. Ke2 Qxc2+ 21. Rd2 Nc3+ 22. Ke3 Qe4# 0-1

[Event "Titled Tuesday intern op 04th Feb Late"]
[Site "Chess.com INT"]
[Date "2025.02.04"]
[Round "4"]
[White "Le, Quang Liem"]
[Black "Sieciechowicz, Marcin"]
[Result "1-0"]
[ECO "A11"]
[WhiteElo "2739"]
[BlackElo "2401"]
[PlyCount "75"]
[EventDate "2025.02.04"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB07_2025"]
[SourceDate "2025.02.12"]
[SourceVersion "1"]
[SourceVersionDate "2025.02.12"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 c6 3. Nc3 d5 4. e3 Nbd7 5. Qc2 e5 6. cxd5 Nxd5 7. Bc4 Nxc3 8. bxc3 Bd6 9. d4 0-0 10. a4 Qe7 11. 0-0 e4 12. Nd2 Nf6 13. Be2 Bg4 14. Nxe4 Nxe4 15. Bxg4 Qh4 16. h3 f5 17. Be2 Rae8 18. Ba3 Rf6 19. Qb3+ Kh8 20. Qxb7 Ng5 21. Bxd6 Rxd6 22. Qc7 Rg6 23. Qg3 Nxh3+ 24. Kh2 Rxg3 25. fxg3 Qg5 26. gxh3 Rxe3 27. Bf3 Rxc3 28. Rae1 h6 29. Re5 Rc2+ 30. Be2 Qd2 31. Rfxf5 Qd3 32. Rf2 Qxd4 33. Ref5 Rc3 34. Rf8+ Kh7 35. Kg2 Qd5+ 36. Bf3 Qd6 37. Be4+ g6 38. R2f7# 1-0

[Event "Titled Tuesday intern op 04th Feb Late"]
[Site "Chess.com INT"]
[Date "2025.02.04"]
[Round "6"]
[White "Sieciechowicz, Marcin"]
[Black "Manukyan, Sargis A"]
[Result "0-1"]
[ECO "D35"]
[WhiteElo "2401"]
[BlackElo "2233"]
[PlyCount "83"]
[EventDate "2025.02.04"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB07_2025"]
[SourceDate "2025.02.12"]
[SourceVersion "1"]
[SourceVersionDate "2025.02.12"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5 exd5 5. Bg5 Be7 6. e3 0-0 7. Bd3 Nbd7 8. h3 b6 9. Qc2 Bb7 10. Nf3 c5 11. 0-0 c4 12. Bf5 g6 13. Bxd7 Nxd7 14. Bf4 f5 15. Ne5 Nxe5 16. Bxe5 a6 17. Ne2 Bf6 18. Nf4 Qe7 19. Qc3 b5 20. Bxf6 Rxf6 21. Qa5 Qd8 22. Qb4 Qd6 23. Qxd6 Rxd6 24. g4 Kf7 25. gxf5 gxf5 26. f3 Rdd8 27. Kf2 Rg8 28. Rg1 a5 29. Rxg8 Rxg8 30. Rg1 Rxg1 31. Kxg1 b4 32. Kf2 a4 33. Ke1 c3 34. Kd1 cxb2 35. Kc2 a3 36. Nd3 Ba6 37. Nxb4 Bc4 38. Kb1 Kg6 39. h4 Kh5 40. f4 Kxh4 41. Nc2 Bd3 42. e4 0-1

[Event "Titled Tuesday intern op 04th Feb Late"]
[Site "Chess.com INT"]
[Date "2025.02.04"]
[Round "1"]
[White "Sieciechowicz, Marcin"]
[Black "Martinez Pla, Xavier"]
[Result "1-0"]
[ECO "E38"]
[WhiteElo "2401"]
[BlackElo "2263"]
[PlyCount "19"]
[EventDate "2025.02.04"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB07_2025"]
[SourceDate "2025.02.12"]
[SourceVersion "1"]
[SourceVersionDate "2025.02.12"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 c5 5. dxc5 Na6 6. a3 Bxc3+ 7. Qxc3 Nxc5 8. f3 d5 9. cxd5 exd5 10. Qxc5 1-0

[Event "Titled Tuesday intern op 04th Feb Late"]
[Site "Chess.com INT"]
[Date "2025.02.04"]
[Round "3"]
[White "Sieciechowicz, Marcin"]
[Black "Salman, Ilhan Serhat"]
[Result "1-0"]
[ECO "A40"]
[WhiteElo "2401"]
[BlackElo "2092"]
[PlyCount "35"]
[EventDate "2025.02.04"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB07_2025"]
[SourceDate "2025.02.12"]
[SourceVersion "1"]
[SourceVersionDate "2025.02.12"]
[SourceQuality "1"]

1. d4 g6 2. c4 Bh6 3. Bxh6 Nxh6 4. h4 c5 5. d5 0-0 6. h5 Nf5 7. Nf3 b5 8. cxb5 a6 9. e4 Nd6 10. e5 Nxb5 11. Qd2 d6 12. Qh6 g5 13. Bd3 f5 14. exf6 Rf7 15. Nxg5 exf6 16. Bxh7+ Kh8 17. Bg6+ Kg8 18. Bxf7# 1-0

[Event "Titled Tuesday intern op 04th Feb Late"]
[Site "Chess.com INT"]
[Date "2025.02.04"]
[Round "7"]
[White "Zavortink, Matt B"]
[Black "Sieciechowicz, Marcin"]
[Result "1-0"]
[ECO "D14"]
[WhiteElo "2135"]
[BlackElo "2401"]
[PlyCount "85"]
[EventDate "2025.02.04"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB07_2025"]
[SourceDate "2025.02.12"]
[SourceVersion "1"]
[SourceVersionDate "2025.02.12"]
[SourceQuality "1"]

1. c4 c6 2. d4 d5 3. cxd5 cxd5 4. Bf4 Nf6 5. Nc3 Nc6 6. e3 Bf5 7. Nf3 e6 8. Ne5 Nd7 9. Nxc6 bxc6 10. a3 Be7 11. Be2 c5 12. dxc5 Bxc5 13. b4 Be7 14. 0-0 0-0 15. Bd3 Bg6 16. Bxg6 hxg6 17. Qd3 Nb6 18. Rfc1 a5 19. b5 a4 20. e4 Rc8 21. exd5 exd5 22. Be3 Bc5 23. Bd4 Bxd4 24. Qxd4 Rc4 25. Qd3 Qd7 26. Rd1 d4 27. Ne4 Rd8 28. Rab1 Qd5 29. h4 Re8 30. f3 Rec8 31. g3 Qe5 32. Kh2 Qe7 33. Re1 Qe5 34. Nf2 Qc5 35. Ne4 Qd5 36. Rbd1 Rc2+ 37. Rd2 Rxd2+ 38. Nxd2 Rc3 39. Qe4 Qxe4 40. Rxe4 Rc2 41. Rxd4 Nc4 42. Rxc4 Rxd2+ 43. Kh3 1-0

[Event "Titled Tuesday intern op 28th Jan Early"]
[Site "Chess.com INT"]
[Date "2025.01.28"]
[Round "4"]
[White "Cuellar Montes, Alejandro"]
[Black "Sieciechowicz, Marcin"]
[Result "0-1"]
[ECO "C01"]
[WhiteElo "2212"]
[BlackElo "2401"]
[PlyCount "68"]
[EventDate "2025.01.28"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB06_2025"]
[SourceDate "2025.02.05"]
[SourceVersion "1"]
[SourceVersionDate "2025.02.05"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Bd3 dxe4 4. Bxe4 Nf6 5. Bf3 c5 6. Ne2 Nc6 7. Be3 cxd4 8. Nxd4 Ne5 9. Nc3 Bd7 10. 0-0 Bb4 11. Ndb5 Nxf3+ 12. Qxf3 Bc6 13. Qf4 Bxc3 14. Nxc3 Nd5 15. Nxd5 Qxd5 16. Qg3 0-0 17. Rfd1 Qe4 18. c3 a6 19. Bd4 Qg6 20. Qxg6 hxg6 21. Bc5 Rfd8 22. Bb6 Re8 23. f3 e5 24. Kf2 f6 25. Ke3 Kf7 26. Rd6 g5 27. Rad1 e4 28. f4 gxf4+ 29. Kxf4 e3 30. Re1 Re4+ 31. Kg3 Rae8 32. Rd4 f5 33. Rxe4 Rxe4 34. Bd4 Rg4+ 0-1

[Event "Titled Tuesday intern op 28th Jan Early"]
[Site "Chess.com INT"]
[Date "2025.01.28"]
[Round "9"]
[White "Iniyan, Panneerseluam"]
[Black "Sieciechowicz, Marcin"]
[Result "1-0"]
[ECO "D00"]
[WhiteElo "2508"]
[BlackElo "2401"]
[PlyCount "59"]
[EventDate "2025.01.28"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB06_2025"]
[SourceDate "2025.02.05"]
[SourceVersion "1"]
[SourceVersionDate "2025.02.05"]
[SourceQuality "1"]

1. d4 Nf6 2. Bf4 d5 3. e3 Bf5 4. Nc3 e6 5. Nb5 Bb4+ 6. c3 Ba5 7. b4 Bb6 8. c4 dxc4 9. Bxc4 a5 10. bxa5 Bxa5+ 11. Kf1 Nd5 12. Be5 0-0 13. Ne2 Nc6 14. Bg3 Ncb4 15. Rc1 Bg6 16. Qb3 Nc6 17. f3 Bb6 18. Bxd5 exd5 19. Kf2 Na5 20. Qb4 Nc4 21. a4 Qd7 22. Nf4 Ba5 23. Qb3 Bd2 24. Nxd5 Bxc1 25. Rxc1 Na5 26. Qa2 Rac8 27. Bxc7 Nc6 28. Nb6 Qf5 29. Nxc8 Rxc8 30. Nd6 1-0

[Event "Titled Tuesday intern op 28th Jan Early"]
[Site "Chess.com INT"]
[Date "2025.01.28"]
[Round "5"]
[White "Le, Tuan Minh"]
[Black "Sieciechowicz, Marcin"]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "2598"]
[BlackElo "2401"]
[PlyCount "65"]
[EventDate "2025.01.28"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB06_2025"]
[SourceDate "2025.02.05"]
[SourceVersion "1"]
[SourceVersionDate "2025.02.05"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. Bf4 Bf5 4. c4 c6 5. Qb3 Qb6 6. e3 e6 7. c5 Qxb3 8. axb3 a6 9. Nbd2 Nh5 10. Bc7 Nd7 11. h3 Nhf6 12. b4 Rc8 13. Bh2 h6 14. Nb3 Ra8 15. b5 cxb5 16. Bxb5 Be7 17. Ne5 Bc2 18. Nd2 Rc8 19. Be2 0-0 20. 0-0 Nxe5 21. Bxe5 Nd7 22. Bg3 e5 23. Rfc1 Bg6 24. Nb3 exd4 25. exd4 Bd8 26. Ra4 Re8 27. Bg4 f5 28. Bf3 Nf6 29. Rb4 Re7 30. Bh4 Rd7 31. Bxf6 Bxf6 32. Rb6 Bd8 33. Rxg6 1-0

[Event "Titled Tuesday intern op 28th Jan Early"]
[Site "Chess.com INT"]
[Date "2025.01.28"]
[Round "8"]
[White "Samunenkov, Igor"]
[Black "Sieciechowicz, Marcin"]
[Result "1/2-1/2"]
[ECO "D79"]
[WhiteElo "2541"]
[BlackElo "2401"]
[PlyCount "93"]
[EventDate "2025.01.28"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB06_2025"]
[SourceDate "2025.02.05"]
[SourceVersion "1"]
[SourceVersionDate "2025.02.05"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. g3 c6 4. Bg2 d5 5. Nf3 Bg7 6. cxd5 cxd5 7. Nc3 0-0 8. Ne5 Bf5 9. 0-0 Ne4 10. Bf4 Nxc3 11. bxc3 Nc6 12. Nxc6 bxc6 13. Qa4 Qb6 14. e4 dxe4 15. Rab1 Qd8 16. Rb7 Qd5 17. Rxe7 c5 18. dxc5 Qxc5 19. Rc7 Qd5 20. g4 Be5 21. Bxe5 Qxe5 22. Rc4 Be6 23. Rxe4 Qxc3 24. Re3 Qc4 25. Qxc4 Bxc4 26. Rc1 Rac8 27. Ra3 Be6 28. Re1 Rc2 29. Rxa7 Rxa2 30. Rxa2 Bxa2 31. h4 Be6 32. f3 Rd8 33. Kh2 Kg7 34. Kg3 Rd2 35. Rb1 h6 36. Rb5 Rc2 37. Bf1 Ra2 38. Bd3 Rd2 39. Be4 Rd7 40. Rb6 Rc7 41. Kf4 Rc5 42. Ke3 g5 43. h5 Ra5 44. Kf2 Ra2+ 45. Kg3 Ra3 46. Rd6 Rb3 47. Ra6 1/2-1/2

[Event "Titled Tuesday intern op 28th Jan Early"]
[Site "Chess.com INT"]
[Date "2025.01.28"]
[Round "2"]
[White "Shukhman, Anna"]
[Black "Sieciechowicz, Marcin"]
[Result "1/2-1/2"]
[ECO "C11"]
[WhiteElo "2365"]
[BlackElo "2401"]
[PlyCount "98"]
[EventDate "2025.01.28"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB06_2025"]
[SourceDate "2025.02.05"]
[SourceVersion "1"]
[SourceVersionDate "2025.02.05"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. f4 c5 6. Nf3 Nc6 7. Be3 Qb6 8. Na4 Qa5+ 9. c3 b6 10. Bd2 c4 11. b4 Nxb4 12. cxb4 Bxb4 13. Kf2 Bxd2 14. Nxd2 b5 15. Nc5 Nxc5 16. dxc5 b4 17. Nf3 Qxc5+ 18. Qd4 Qxd4+ 19. Nxd4 Bd7 20. Rb1 a5 21. Be2 Ke7 22. Ke3 Rab8 23. Nc2 Ba4 24. Rhc1 Bxc2 25. Rxc2 a4 26. Bxc4 dxc4 27. Rxc4 Rhc8 28. Rxc8 Rxc8 29. Rxb4 Rc3+ 30. Kd4 Ra3 31. Rb7+ Ke8 32. Rb8+ Kd7 33. Kc5 Rxa2 34. Rb7+ Kd8 35. Rxf7 Rxg2 36. Kd6 Ke8 37. Ra7 Rxh2 38. Kxe6 Rh6+ 39. Kd5 Rb6 40. f5 Kf8 41. Rxa4 Rb8 42. Ra7 h5 43. Ke4 Rb4+ 44. Kd5 h4 45. e6 h3 46. Ra8+ Ke7 47. Ra7+ Kf8 48. Ra8+ Ke7 49. Ra7+ Kf8 1/2-1/2

[Event "Titled Tuesday intern op 28th Jan Early"]
[Site "Chess.com INT"]
[Date "2025.01.28"]
[Round "10"]
[White "Sieciechowicz, Marcin"]
[Black "Asish, Panda"]
[Result "0-1"]
[ECO "D35"]
[WhiteElo "2401"]
[BlackElo "1903"]
[PlyCount "92"]
[EventDate "2025.01.28"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB06_2025"]
[SourceDate "2025.02.05"]
[SourceVersion "1"]
[SourceVersionDate "2025.02.05"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5 exd5 5. Bg5 c6 6. e3 Bd6 7. Bd3 0-0 8. Nf3 h6 9. Bh4 Re8 10. 0-0 a5 11. Rc1 Na6 12. Re1 Nc7 13. Bg3 Bxg3 14. hxg3 Bg4 15. Qb3 Bxf3 16. gxf3 Rb8 17. Na4 Ne6 18. Qb6 Qd6 19. f4 g5 20. f5 Ng7 21. Qxa5 Ngh5 22. Qc5 Qc7 23. Kg2 Ng4 24. Kf3 Nxf2 25. Kxf2 Qxg3+ 26. Kf1 Qf3+ 27. Kg1 Qg3+ 28. Kf1 Qh2 29. Re2 Ng3+ 30. Ke1 Nxe2 31. Bxe2 Rxe3 32. Nc3 Rbe8 33. Rc2 Qg1+ 34. Kd2 Qf2 35. Kd1 Rd3+ 36. Kc1 Qe1+ 37. Bd1 Qe3+ 38. Kb1 Qxd4 39. Qxd4 Rxd4 40. Rh2 Re1 41. Kc2 Rh4 42. Rg2 Reh1 43. Kb3 d4 44. Rd2 dxc3 45. Rd8+ Kg7 46. Bc2 cxb2 0-1

[Event "Titled Tuesday intern op 28th Jan Early"]
[Site "Chess.com INT"]
[Date "2025.01.28"]
[Round "1"]
[White "Sieciechowicz, Marcin"]
[Black "Eggleston, Thomas"]
[Result "1-0"]
[ECO "A84"]
[WhiteElo "2401"]
[BlackElo "2178"]
[PlyCount "63"]
[EventDate "2025.01.28"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB06_2025"]
[SourceDate "2025.02.05"]
[SourceVersion "1"]
[SourceVersionDate "2025.02.05"]
[SourceQuality "1"]

1. d4 e6 2. c4 f5 3. g4 fxg4 4. h3 g3 5. fxg3 Bd6 6. Qd3 Nf6 7. e4 e5 8. Nf3 Nc6 9. d5 Ne7 10. Nc3 0-0 11. Bg2 Ng6 12. Be3 Bb4 13. 0-0 d6 14. Nd2 Bd7 15. a3 Bc5 16. Bxc5 dxc5 17. b4 Qe7 18. Qe3 cxb4 19. axb4 c6 20. c5 Nh5 21. Nc4 h6 22. Nd6 Rxf1+ 23. Bxf1 Be8 24. Be2 Nf6 25. Kh2 a6 26. Rf1 Rd8 27. Nf5 Qf8 28. d6 Bd7 29. Bc4+ Kh8 30. Nxh6 Nf4 31. gxf4 gxh6 32. fxe5 1-0

[Event "Titled Tuesday intern op 28th Jan Early"]
[Site "Chess.com INT"]
[Date "2025.01.28"]
[Round "3"]
[White "Sieciechowicz, Marcin"]
[Black "Slugin, Sergey"]
[Result "1-0"]
[ECO "A58"]
[WhiteElo "2401"]
[BlackElo "2336"]
[PlyCount "45"]
[EventDate "2025.01.28"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB06_2025"]
[SourceDate "2025.02.05"]
[SourceVersion "1"]
[SourceVersionDate "2025.02.05"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 a6 5. bxa6 g6 6. Nc3 Bg7 7. e4 0-0 8. Nf3 Qa5 9. Bd3 Nxd5 10. exd5 Bxc3+ 11. bxc3 Qxc3+ 12. Qd2 Qxa1 13. 0-0 Qg7 14. Bb2 f6 15. d6 e6 16. g4 g5 17. h4 gxh4 18. Kh2 h6 19. g5 hxg5 20. Nxg5 Bxa6 21. Rg1 Bxd3 22. Qxd3 c4 23. Qc2 1-0

[Event "Titled Tuesday intern op 28th Jan Early"]
[Site "Chess.com INT"]
[Date "2025.01.28"]
[Round "7"]
[White "Sieciechowicz, Marcin"]
[Black "Tsaruk, Maksim"]
[Result "1-0"]
[ECO "A80"]
[WhiteElo "2401"]
[BlackElo "2424"]
[PlyCount "43"]
[EventDate "2025.01.28"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB06_2025"]
[SourceDate "2025.02.05"]
[SourceVersion "1"]
[SourceVersionDate "2025.02.05"]
[SourceQuality "1"]

1. d4 f5 2. Nc3 Nf6 3. Bf4 d5 4. Nb5 Na6 5. e3 e6 6. Nf3 c6 7. Nc3 Nc7 8. Bd3 Bd6 9. Bxd6 Qxd6 10. Ne5 Bd7 11. Qd2 Qe7 12. Ne2 0-0 13. c4 a5 14. 0-0 Be8 15. Rac1 Qb4 16. Qc2 a4 17. a3 Qe7 18. Nc3 c5 19. dxc5 Qxc5 20. cxd5 Nfxd5 21. Nxd5 Qxc2 22. Ne7+ 1-0

[Event "Titled Tuesday intern op 28th Jan Early"]
[Site "Chess.com INT"]
[Date "2025.01.28"]
[Round "6"]
[White "Sieciechowicz, Marcin"]
[Black "Yang, Kaiqi"]
[Result "1-0"]
[ECO "A84"]
[WhiteElo "2401"]
[BlackElo "2481"]
[PlyCount "81"]
[EventDate "2025.01.28"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB06_2025"]
[SourceDate "2025.02.05"]
[SourceVersion "1"]
[SourceVersionDate "2025.02.05"]
[SourceQuality "1"]

1. d4 e6 2. c4 f5 3. g4 fxg4 4. h3 g3 5. fxg3 Bd6 6. Qd3 Nc6 7. a3 Nf6 8. c5 Be7 9. Bg2 d6 10. Bxc6+ bxc6 11. b4 a5 12. Bb2 Ba6 13. Qe3 0-0 14. Qxe6+ Kh8 15. Nc3 Re8 16. Qf5 dxc5 17. dxc5 axb4 18. axb4 Qd4 19. Qf4 Qxf4 20. gxf4 Nh5 21. e3 Bh4+ 22. Kd2 Rad8+ 23. Kc1 Bc4 24. Nf3 Bf2 25. Nd1 Bxe3+ 26. Nxe3 Rxe3 27. Ne5 Bd5 28. Rd1 Rf8 29. Ra3 Rxa3 30. Bxa3 Nxf4 31. Bb2 h5 32. b5 Kh7 33. bxc6 Bf3 34. Nxf3 Ne2+ 35. Kd2 Rxf3 36. Kxe2 Rxh3 37. Bd4 Rh2+ 38. Kd3 h4 39. Be5 Rg2 40. Bxc7 Rg6 41. Bd6 1-0

[Event "Titled Tuesday intern op 21st Jan Late"]
[Site "Chess.com INT"]
[Date "2025.01.21"]
[Round "9"]
[White "Danielian, Vardan"]
[Black "Sieciechowicz, Marcin"]
[Result "1/2-1/2"]
[ECO "D36"]
[WhiteElo "2230"]
[BlackElo "2401"]
[PlyCount "122"]
[EventDate "2025.01.21"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB05_2025"]
[SourceDate "2025.01.29"]
[SourceVersion "1"]
[SourceVersionDate "2025.01.29"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 e6 5. cxd5 exd5 6. Bg5 Be7 7. e3 h6 8. Bh4 0-0 9. Bd3 Re8 10. Qc2 Ne4 11. Bg3 Nxg3 12. hxg3 Nd7 13. g4 Nf8 14. Bf5 Bxf5 15. gxf5 Rc8 16. 0-0-0 b5 17. Kb1 b4 18. Na4 Nd7 19. Rc1 Qa5 20. Ne5 Nxe5 21. dxe5 c5 22. f6 Bf8 23. fxg7 Bxg7 24. Nxc5 Rxe5 25. Rhf1 Re7 26. Rfd1 Rec7 27. Rxd5 Bf8 28. Qe4 Rxc5 29. Qg4+ Bg7 30. Qxc8+ Rxc8 31. Rxa5 Rd8 32. Rac5 Kh7 33. Rc8 Rd2 34. R8c2 Rd3 35. a3 bxa3 36. bxa3 Rxa3 37. Rc7 Rb3+ 38. Kc2 Rb2+ 39. Kd3 Rxf2 40. Rxa7 Kg6 41. Rcc7 h5 42. g3 Rf3 43. Ke4 Rf1 44. Rc6+ Kg5 45. Rcc7 Kg6 46. Rc6+ Kg5 47. Ra5+ f5+ 48. Kd5 Rf3 49. Rc7 Bf6 50. Ke6 Rxe3+ 51. Kf7 Rxg3 52. Ra6 Be5 53. Rg6+ Kh4 54. Rc4+ Kh3 55. Rxg3+ Bxg3 56. Kg6 f4 57. Kxh5 f3 58. Rc3 f2 59. Rf3 Kg2 60. Kg4 f1Q 61. Rxf1 Kxf1 1/2-1/2

[Event "Titled Tuesday intern op 21st Jan Late"]
[Site "Chess.com INT"]
[Date "2025.01.21"]
[Round "4"]
[White "Gurevich, Dmitry"]
[Black "Sieciechowicz, Marcin"]
[Result "0-1"]
[ECO "D45"]
[WhiteElo "2345"]
[BlackElo "2401"]
[PlyCount "62"]
[EventDate "2025.01.21"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB05_2025"]
[SourceDate "2025.01.29"]
[SourceVersion "1"]
[SourceVersionDate "2025.01.29"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. e3 Nf6 4. Nc3 e6 5. Nf3 Nbd7 6. b3 Bb4 7. Bd2 0-0 8. Bd3 b6 9. 0-0 Bb7 10. Qc2 h6 11. Nxd5 Nxd5 12. cxd5 Bxd2 13. dxc6 Rc8 14. Qxd2 Bxc6 15. e4 Nf6 16. Qe3 Bb7 17. Rac1 Qe7 18. Ne5 Qa3 19. Rxc8 Rxc8 20. Qe2 Rc1 21. f3 Rxf1+ 22. Kxf1 Qb4 23. Qb2 Nh5 24. g3 a5 25. a3 Qe7 26. Nc4 Ba6 27. Ke2 Qg5 28. Nxb6 Nf4+ 29. Kd1 Nxd3 30. Qd2 Qb5 31. b4 Qxb6 0-1

[Event "Titled Tuesday intern op 21st Jan Late"]
[Site "Chess.com INT"]
[Date "2025.01.21"]
[Round "2"]
[White "Huber, Martin Christian"]
[Black "Sieciechowicz, Marcin"]
[Result "0-1"]
[ECO "D46"]
[WhiteElo "2338"]
[BlackElo "2401"]
[PlyCount "64"]
[EventDate "2025.01.21"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB05_2025"]
[SourceDate "2025.01.29"]
[SourceVersion "1"]
[SourceVersionDate "2025.01.29"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 c6 3. d4 d5 4. Nc3 e6 5. e3 Nbd7 6. Qc2 Bd6 7. Bd3 0-0 8. 0-0 h6 9. e4 dxe4 10. Nxe4 Nxe4 11. Bxe4 c5 12. Rd1 Qc7 13. h3 Nf6 14. Bd3 b6 15. Be3 Bb7 16. dxc5 Bxc5 17. Nd4 Rfd8 18. Bf1 a6 19. a3 e5 20. Nf5 Be4 21. Nxh6+ gxh6 22. Qc3 Bxe3 23. Qxe3 Kh7 24. Qg3 Bg6 25. Qh4 Ne4 26. Bd3 Nc5 27. Bxg6+ fxg6 28. b4 Ne6 29. Qf6 Nd4 30. c5 bxc5 31. bxc5 Rf8 32. Qh4 Rf4 0-1

[Event "Titled Tuesday intern op 21st Jan Late"]
[Site "Chess.com INT"]
[Date "2025.01.21"]
[Round "10"]
[White "Korneev, Svyatoslav"]
[Black "Sieciechowicz, Marcin"]
[Result "1/2-1/2"]
[ECO "A11"]
[WhiteElo "2187"]
[BlackElo "2401"]
[PlyCount "172"]
[EventDate "2025.01.21"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB05_2025"]
[SourceDate "2025.01.29"]
[SourceVersion "1"]
[SourceVersionDate "2025.01.29"]
[SourceQuality "1"]

1. c4 c6 2. Nf3 Nf6 3. g3 d5 4. Qc2 Nbd7 5. Bg2 e5 6. d3 Bd6 7. 0-0 0-0 8. Nbd2 Qe7 9. e4 dxe4 10. Nxe4 Nxe4 11. dxe4 a5 12. Be3 Nc5 13. Bxc5 Bxc5 14. Rad1 f6 15. h3 Be6 16. Kh2 Rfd8 17. b3 Rxd1 18. Rxd1 Rd8 19. Rxd8+ Qxd8 20. Kg1 Qd7 21. g4 h5 22. gxh5 Bxh3 23. Nh2 Kh7 24. Qe2 Be6 25. Bf3 Qd4 26. Bg4 Bxg4 27. Nxg4 a4 28. bxa4 Qc3 29. Kg2 Qc1 30. Qf3 Qxc4 31. Qf5+ Kg8 32. h6 Qf7 33. h7+ Kh8 34. Nxe5 Qe8 35. Nd3 Bd6 36. Kf3 Be5 37. Nxe5 fxe5 38. Ke3 g6 39. Qh3 Qf7 40. Ke2 Qxa2+ 41. Kf1 Qf7 42. Qc8+ Kxh7 43. Qb8 Qe7 44. Qc8 Kg7 45. Qh3 Qf7 46. Qd3 Qf6 47. f3 Qf7 48. Ke2 Qe7 49. Kf1 Kf6 50. Ke2 Ke6 51. Qc4+ Kf6 52. Qc2 Qd6 53. Kf1 Qd4 54. Qb3 Kg5 55. Kg2 Kf4 56. Qc2 Ke3 57. Qf2+ Kd3 58. Qf1+ Kc3 59. Qa1+ Kb4 60. Qa2 Ka5 61. Qf7 Kxa4 62. Qxb7 c5 63. Qc6+ Kb3 64. Qb6+ Kc2 65. Qxg6 c4 66. f4 exf4 67. e5+ Qd3 68. Qxd3+ cxd3 69. e6 d2 70. e7 d1Q 71. e8Q Qg4+ 72. Kf2 Qg3+ 73. Kf1 f3 74. Qc6+ Kd3 75. Qd5+ Ke3 76. Qc5+ Kf4 77. Qd4+ Kg5 78. Qg7+ Kh4 79. Qxg3+ Kxg3 80. Kg1 Kg4 81. Kf2 Kf4 82. Kf1 Ke4 83. Kf2 Kf4 84. Kf1 Ke3 85. Ke1 f2+ 86. Kf1 Kf3 1/2-1/2

[Event "Titled Tuesday intern op 21st Jan Late"]
[Site "Chess.com INT"]
[Date "2025.01.21"]
[Round "8"]
[White "Sieciechowicz, Marcin"]
[Black "Durarbayli, Vasif"]
[Result "0-1"]
[ECO "E32"]
[WhiteElo "2401"]
[BlackElo "2614"]
[PlyCount "80"]
[EventDate "2025.01.21"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB05_2025"]
[SourceDate "2025.01.29"]
[SourceVersion "1"]
[SourceVersionDate "2025.01.29"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 d6 5. Bd2 Nbd7 6. Nf3 e5 7. e3 c6 8. a3 Bxc3 9. Bxc3 e4 10. Nd2 d5 11. Be2 0-0 12. g4 a5 13. h4 Ne8 14. g5 Nc7 15. Rc1 f5 16. f4 exf3 17. Bxf3 Qe7 18. Kf2 Nb6 19. Qd3 Nxc4 20. Nxc4 dxc4 21. Qxc4+ Be6 22. Qc5 Qd7 23. Bxa5 Nd5 24. Bd2 Rae8 25. b4 Nc7 26. a4 Bd5 27. b5 Bxf3 28. Kxf3 Re6 29. bxc6 bxc6 30. Rb1 Nd5 31. a5 Qe8 32. Rb3 Qh5+ 33. Kf2 f4 34. e4 Rxe4 35. Rf3 Rfe8 36. Qc4 Qg4 37. Rh2 Kh8 38. a6 Ne3 39. Qb3 Nf5 40. Qc4 Nxd4 0-1

[Event "Titled Tuesday intern op 21st Jan Late"]
[Site "Chess.com INT"]
[Date "2025.01.21"]
[Round "3"]
[White "Sieciechowicz, Marcin"]
[Black "Kanyamarala, Trisha"]
[Result "1-0"]
[ECO "D36"]
[WhiteElo "2401"]
[BlackElo "2158"]
[PlyCount "101"]
[EventDate "2025.01.21"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB05_2025"]
[SourceDate "2025.01.29"]
[SourceVersion "1"]
[SourceVersionDate "2025.01.29"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5 exd5 5. Bg5 Be7 6. e3 0-0 7. Bd3 c6 8. Qc2 Nbd7 9. h3 Re8 10. Bf4 a6 11. Nf3 c5 12. 0-0 c4 13. Bf5 g6 14. Bxd7 Bxd7 15. Ne5 Bf5 16. Qd2 Bb4 17. f3 Nd7 18. Rfe1 Nxe5 19. Bxe5 Bd3 20. Qf2 f6 21. Bf4 Qa5 22. Rac1 Rad8 23. h4 b5 24. Kh2 Qb6 25. Qg3 Rd7 26. a3 Bxc3 27. Rxc3 a5 28. b4 axb4 29. axb4 Qa6 30. Rcc1 Qa3 31. Bd6 Bf5 32. Bc5 Kg7 33. Qf4 Bd3 34. Ra1 Qb2 35. Ra6 Bf5 36. e4 dxe4 37. fxe4 Be6 38. Rf1 Rf7 39. d5 Bd7 40. Ra7 Ref8 41. Bxf8+ Kxf8 42. Qd6+ Kg7 43. Rxd7 Rxd7 44. Qxd7+ Kh6 45. Qe7 Qd4 46. Qxf6 Qxe4 47. Qf4+ Qxf4+ 48. Rxf4 Kg7 49. d6 c3 50. d7 c2 51. Rf1 1-0

[Event "Titled Tuesday intern op 21st Jan Late"]
[Site "Chess.com INT"]
[Date "2025.01.21"]
[Round "1"]
[White "Sieciechowicz, Marcin"]
[Black "Mingo Fernandez, Matias"]
[Result "0-1"]
[ECO "D15"]
[WhiteElo "2401"]
[BlackElo "2177"]
[PlyCount "66"]
[EventDate "2025.01.21"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB05_2025"]
[SourceDate "2025.01.29"]
[SourceVersion "1"]
[SourceVersionDate "2025.01.29"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 Bf5 5. Qb3 Qb6 6. c5 Qc7 7. Bf4 Qc8 8. e3 Nbd7 9. Nh4 Bg6 10. Nxg6 hxg6 11. h3 e5 12. Bg3 Be7 13. Be2 0-0 14. h4 exd4 15. exd4 Re8 16. 0-0-0 b6 17. cxb6 axb6 18. h5 gxh5 19. Bxh5 Nxh5 20. Rxh5 g6 21. Rh2 Bf6 22. Kb1 b5 23. Qb4 Nb6 24. Be5 Nc4 25. f4 Qf5+ 26. Ka1 Ne3 27. Qb3 Nc2+ 28. Qxc2 Qxc2 29. Bxf6 Rxa2+ 30. Nxa2 Qxd1+ 31. Nc1 Qxc1+ 32. Ka2 Ra8+ 33. Kb3 Qc4# 0-1

[Event "Titled Tuesday intern op 21st Jan Late"]
[Site "Chess.com INT"]
[Date "2025.01.21"]
[Round "7"]
[White "Sieciechowicz, Marcin"]
[Black "Senft, Sean"]
[Result "1-0"]
[ECO "D15"]
[WhiteElo "2401"]
[BlackElo "2054"]
[PlyCount "64"]
[EventDate "2025.01.21"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB05_2025"]
[SourceDate "2025.01.29"]
[SourceVersion "1"]
[SourceVersionDate "2025.01.29"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. Nf3 a6 5. c5 Nbd7 6. Bf4 Nh5 7. Qd2 Nxf4 8. Qxf4 Nf6 9. e4 dxe4 10. Nxe4 Nxe4 11. Qxe4 Qd5 12. Qxd5 cxd5 13. Bd3 g6 14. 0-0 Bf5 15. Bxf5 gxf5 16. b4 Bg7 17. a4 Kd7 18. Rfe1 e6 19. Kf1 Bf6 20. Ke2 Rhg8 21. g3 Rg4 22. Kd3 Re4 23. Reb1 Rg8 24. h3 h5 25. b5 axb5 26. Rxb5 Kc7 27. Rab1 Rb8 28. a5 e5 29. a6 exd4 30. Rxb7+ Rxb7 31. Rxb7+ Kc6 32. Rxf7 Bd8 1-0

[Event "Titled Tuesday intern op 21st Jan Late"]
[Site "Chess.com INT"]
[Date "2025.01.21"]
[Round "5"]
[White "Sieciechowicz, Marcin"]
[Black "Sriniaiyer, Sudarshan"]
[Result "1-0"]
[ECO "D36"]
[WhiteElo "2401"]
[BlackElo "2182"]
[PlyCount "75"]
[EventDate "2025.01.21"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB05_2025"]
[SourceDate "2025.01.29"]
[SourceVersion "1"]
[SourceVersionDate "2025.01.29"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5 exd5 5. Bg5 c6 6. e3 h6 7. Bh4 Be7 8. Bd3 0-0 9. Qc2 a5 10. Nf3 Ne8 11. Bxe7 Qxe7 12. Nxd5 cxd5 13. Qxc8 Nc6 14. Qxa8 Nd6 15. Qxf8+ Kxf8 16. 0-0 Nb4 17. Rfd1 Qc7 18. Rac1 Qb6 19. Bb1 Nc4 20. Ne5 Nxe5 21. dxe5 Qe6 22. a3 Nc6 23. Ba2 Qxe5 24. Bxd5 Qxb2 25. Bxc6 bxc6 26. Rxc6 Qxa3 27. Rc7 g5 28. g3 Qb3 29. Ra1 Qb2 30. Rcc1 a4 31. Rcb1 Qc2 32. Rb8+ Kg7 33. Ra8 h5 34. R8xa4 g4 35. Rf4 Qc6 36. Ra7 Qc1+ 37. Kg2 Qc6+ 38. e4 1-0

[Event "Titled Tuesday intern op 21st Jan Late"]
[Site "Chess.com INT"]
[Date "2025.01.21"]
[Round "6"]
[White "Szpar, Milosz"]
[Black "Sieciechowicz, Marcin"]
[Result "1-0"]
[ECO "C12"]
[WhiteElo "2457"]
[BlackElo "2401"]
[PlyCount "85"]
[EventDate "2025.01.21"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB05_2025"]
[SourceDate "2025.01.29"]
[SourceVersion "1"]
[SourceVersionDate "2025.01.29"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Bb4 5. e5 h6 6. Bd2 Bxc3 7. bxc3 Ne4 8. Bc1 c5 9. Bd3 Nc6 10. Ne2 cxd4 11. cxd4 Qa5+ 12. Kf1 Nc3 13. Qe1 Nxe2 14. Qxa5 Nxa5 15. Kxe2 Bd7 16. Ba3 Nc4 17. Bc1 Ba4 18. Rb1 b6 19. h4 Rc8 20. Rh3 Na5 21. Kd1 0-0 22. Rg3 Kh8 23. Rb4 Bd7 24. Rb1 Rc7 25. Rf3 Kg8 26. g4 Rfc8 27. g5 hxg5 28. Bxg5 Ba4 29. Rc1 Nc4 30. Rb1 Na3 31. Rb2 Nxc2 32. Kd2 Nxd4 33. Rg3 Nf5 34. Bxf5 exf5 35. Bf6 g6 36. h5 Kh7 37. hxg6+ fxg6 38. Rh3+ Kg8 39. e6 Rh7 40. Rxh7 Kxh7 41. Rb4 Be8 42. Rh4+ Kg8 43. Rh8# 1-0

[Event "Titled Tuesday intern op 14th Jan Early"]
[Site "Chess.com INT"]
[Date "2025.01.14"]
[Round "3"]
[White "Goldin, Roman"]
[Black "Sieciechowicz, Marcin"]
[Result "1-0"]
[ECO "A11"]
[WhiteElo "2288"]
[BlackElo "2401"]
[PlyCount "32"]
[EventDate "2025.01.14"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB04_2025"]
[SourceDate "2025.01.22"]
[SourceVersion "1"]
[SourceVersionDate "2025.01.22"]
[SourceQuality "1"]

1. Nf3 Nf6 2. g3 d5 3. Bg2 Bf5 4. d3 e6 5. 0-0 h6 6. c4 Be7 7. Nc3 c6 8. cxd5 exd5 9. Nd4 Bh7 10. e4 dxe4 11. dxe4 0-0 12. e5 Nd5 13. Nxd5 cxd5 14. Be3 Nc6 15. Nxc6 bxc6 16. Rc1 a5 1-0

[Event "Titled Tuesday intern op 14th Jan Early"]
[Site "Chess.com INT"]
[Date "2025.01.14"]
[Round "2"]
[White "Sieciechowicz, Marcin"]
[Black "Boraso, Alessio"]
[Result "0-1"]
[ECO "E74"]
[WhiteElo "2401"]
[BlackElo "2204"]
[PlyCount "60"]
[EventDate "2025.01.14"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB04_2025"]
[SourceDate "2025.01.22"]
[SourceVersion "1"]
[SourceVersionDate "2025.01.22"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 0-0 5. Be2 d6 6. Be3 c5 7. d5 b5 8. cxb5 a6 9. a4 Qa5 10. Bd2 Qb4 11. f3 Nbd7 12. bxa6 Bxa6 13. Nb5 Bxb5 14. Bxb4 Bxe2 15. Nxe2 cxb4 16. 0-0 Nc5 17. Nd4 Nfd7 18. a5 Ne5 19. Nb3 Rfc8 20. Nxc5 dxc5 21. Qb3 Rab8 22. a6 c4 23. Qa4 Nd3 24. a7 Ra8 25. Qd7 Bd4+ 26. Kh1 Rf8 27. Qb5 Rfc8 28. Qb7 Re8 29. Ra6 b3 30. Rc6 Nxb2 0-1

[Event "Titled Tuesday intern op 14th Jan Early"]
[Site "Chess.com INT"]
[Date "2025.01.14"]
[Round "1"]
[White "Urquhart, Eddie"]
[Black "Sieciechowicz, Marcin"]
[Result "1/2-1/2"]
[ECO "C07"]
[WhiteElo "2209"]
[BlackElo "2401"]
[PlyCount "108"]
[EventDate "2025.01.14"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB04_2025"]
[SourceDate "2025.01.22"]
[SourceVersion "1"]
[SourceVersionDate "2025.01.22"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 cxd4 5. Nxd4 Nc6 6. Nxc6 bxc6 7. Bd3 Bd6 8. 0-0 Qc7 9. h3 Nf6 10. c4 0-0 11. Re1 Bb7 12. Qc2 h6 13. b3 d4 14. c5 Bf4 15. Nc4 Bxc1 16. Raxc1 Ba6 17. Nd6 Bxd3 18. Qxd3 e5 19. Qg3 Nd7 20. Nf5 g6 21. Nxh6+ Kh7 22. Ng4 Kg7 23. Red1 Rac8 24. Nh2 Rfe8 25. b4 a5 26. a3 axb4 27. axb4 Qb7 28. Rb1 Ra8 29. Nf3 Ra4 30. h4 Rxb4 31. Rxb4 Qxb4 32. h5 Qxc5 33. hxg6 fxg6 34. Rb1 Rb8 35. Rxb8 Nxb8 36. Nxe5 Qd6 37. f4 Nd7 38. Nxd7 Qxd7 39. f5 Qf7 40. Qe5+ Qf6 41. Qc7+ Kh6 42. Qf4+ g5 43. Qh2+ Kg7 44. Qc7+ Kh6 45. Qh2+ Kg7 46. Qc7+ Kh6 47. g4 d3 48. e5 d2 49. exf6 d1Q+ 50. Kf2 Qd2+ 51. Kf3 Qd3+ 52. Kf2 Qd2+ 53. Kf1 Qd1+ 54. Kf2 Qd2+ 1/2-1/2

[Event "Titled Tuesday intern op 07th Jan Early"]
[Site "Chess.com INT"]
[Date "2025.01.07"]
[Round "2"]
[White "Hajiyev, Kanan"]
[Black "Sieciechowicz, Marcin"]
[Result "0-1"]
[ECO "D13"]
[WhiteElo "2160"]
[BlackElo "2401"]
[PlyCount "108"]
[EventDate "2025.01.07"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB03_2025"]
[SourceDate "2025.01.15"]
[SourceVersion "1"]
[SourceVersionDate "2025.01.15"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. cxd5 cxd5 4. Nc3 Nf6 5. Nf3 Nc6 6. Bg5 Ne4 7. Bf4 Nxc3 8. bxc3 e6 9. e3 Bd6 10. Bd3 Bxf4 11. exf4 h6 12. 0-0 0-0 13. Re1 Bd7 14. Rb1 Na5 15. Ne5 Rc8 16. Re3 f6 17. Ng6 Rf7 18. Rc1 Nc4 19. Rh3 Nd6 20. g4 Bb5 21. Bb1 Ne4 22. Qe1 Qd6 23. f3 Nxc3 24. Rxc3 Rxc3 25. Qxc3 Rc7 26. Qd2 Qa3 27. Kf2 Rc1 28. Be4 dxe4 29. fxe4 Qxh3 30. Qxc1 Qxh2+ 31. Kf3 Be2+ 32. Ke3 Qg3+ 33. Kxe2 Qxg4+ 34. Ke3 Qxg6 35. Qc8+ Kh7 36. Qxb7 Qg3+ 37. Ke2 Qxf4 38. d5 Qxe4+ 39. Kf2 Qxd5 40. Qxa7 h5 41. a4 h4 42. a5 h3 43. Qe3 Qxa5 44. Qxh3+ Kg6 45. Qg4+ Kf7 46. Qh4 Qf5+ 47. Ke1 Qg5 48. Qc4 Qe5+ 49. Kf1 g5 50. Qc8 Kg6 51. Qd7 Kf5 52. Qe8 Qe4 53. Kf2 Kf4 54. Qg6 Qxg6 0-1

[Event "Titled Tuesday intern op 07th Jan Early"]
[Site "Chess.com INT"]
[Date "2025.01.07"]
[Round "5"]
[White "Le, Tuan Minh"]
[Black "Sieciechowicz, Marcin"]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "2598"]
[BlackElo "2401"]
[PlyCount "65"]
[EventDate "2025.01.07"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB03_2025"]
[SourceDate "2025.01.15"]
[SourceVersion "1"]
[SourceVersionDate "2025.01.15"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. Bf4 e6 4. e3 Bd6 5. Nbd2 Bxf4 6. exf4 b6 7. c3 0-0 8. Bd3 c5 9. Qe2 a5 10. 0-0 Ba6 11. Bxa6 Nxa6 12. Rfe1 Nb8 13. Rad1 Nc6 14. Nf1 Qc7 15. g3 Ne4 16. c4 Nxd4 17. Nxd4 cxd4 18. Rxd4 Nf6 19. Ne3 dxc4 20. Nxc4 Rfd8 21. Red1 Rxd4 22. Rxd4 Rd8 23. Qe5 Qb8 24. Qxb8 Rxb8 25. Nxb6 Kf8 26. Nc4 a4 27. Kf1 Nd5 28. f5 Ke7 29. fxe6 fxe6 30. Ne5 Rb6 31. Rxa4 Rxb2 32. Ra7+ Kd6 33. Nc4+ 1-0

[Event "Titled Tuesday intern op 07th Jan Early"]
[Site "Chess.com INT"]
[Date "2025.01.07"]
[Round "3"]
[White "Savitha Shri, B."]
[Black "Sieciechowicz, Marcin"]
[Result "0-1"]
[ECO "A12"]
[WhiteElo "2331"]
[BlackElo "2401"]
[PlyCount "70"]
[EventDate "2025.01.07"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB03_2025"]
[SourceDate "2025.01.15"]
[SourceVersion "1"]
[SourceVersionDate "2025.01.15"]
[SourceQuality "1"]

1. Nf3 Nf6 2. g3 d5 3. b3 Bf5 4. Bb2 e6 5. Bg2 Be7 6. 0-0 0-0 7. d3 h6 8. Nbd2 Nbd7 9. c4 c6 10. Re1 Bh7 11. a3 a5 12. Rc1 Bc5 13. h3 Qb6 14. d4 Be7 15. Ne5 Nxe5 16. dxe5 Ne4 17. Nxe4 dxe4 18. Bd4 Bc5 19. Bxc5 Qxc5 20. Qd6 Qb6 21. c5 Qxb3 22. Rb1 Qxa3 23. Rxb7 Qc3 24. Rd1 a4 25. Qxc6 a3 26. Rbb1 a2 27. Ra1 Rfc8 28. Qb7 Qxc5 29. Bxe4 Bxe4 30. Qxe4 Qc2 31. Qb7 Qxe2 32. Re1 Qc2 33. Rac1 Qxc1 34. Rxc1 Rxc1+ 35. Kg2 a1Q 0-1

[Event "Titled Tuesday intern op 07th Jan Early"]
[Site "Chess.com INT"]
[Date "2025.01.07"]
[Round "4"]
[White "Sieciechowicz, Marcin"]
[Black "Bok, Benjamin"]
[Result "1/2-1/2"]
[ECO "E35"]
[WhiteElo "2401"]
[BlackElo "2583"]
[PlyCount "85"]
[EventDate "2025.01.07"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB03_2025"]
[SourceDate "2025.01.15"]
[SourceVersion "1"]
[SourceVersionDate "2025.01.15"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 d5 5. cxd5 exd5 6. Bg5 h6 7. Bh4 Nc6 8. e3 g5 9. Bg3 h5 10. Bb5 h4 11. Be5 0-0 12. Bxc6 bxc6 13. h3 Rb8 14. Nge2 Nh5 15. 0-0 f6 16. Bh2 Bd6 17. Bxd6 cxd6 18. e4 dxe4 19. Nxe4 Rb6 20. Rfe1 g4 21. hxg4 Bxg4 22. Nxd6 Qxd6 23. Qg6+ Ng7 24. Qxg4 Rxb2 25. Qxh4 Re8 26. Ng3 Rxe1+ 27. Rxe1 Qb4 28. Re3 Rxa2 29. Qg4 Qb1+ 30. Kh2 Qh7+ 31. Kg1 Ra1+ 32. Nf1 Qb1 33. Qe2 a5 34. Qc4+ Kf8 35. Qc5+ Kg8 36. Qc4+ Kf8 37. Qc5+ Kf7 38. Qc4+ Kg6 39. Rg3+ Kh7 40. Rh3+ Kg6 41. Rg3+ Kh7 42. Rh3+ Kg6 43. Rg3+ 1/2-1/2

[Event "Titled Tuesday intern op 07th Jan Early"]
[Site "Chess.com INT"]
[Date "2025.01.07"]
[Round "1"]
[White "Sieciechowicz, Marcin"]
[Black "Jegorovas, Aleksandras"]
[Result "1-0"]
[ECO "E32"]
[WhiteElo "2401"]
[BlackElo "2270"]
[PlyCount "81"]
[EventDate "2025.01.07"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB03_2025"]
[SourceDate "2025.01.15"]
[SourceVersion "1"]
[SourceVersionDate "2025.01.15"]
[SourceQuality "1"]

1. d4 e6 2. c4 Nf6 3. Nc3 Bb4 4. Qc2 b6 5. e4 c5 6. d5 Qe7 7. Nge2 exd5 8. exd5 Ba6 9. Bg5 h6 10. Bxf6 Qxf6 11. 0-0-0 Qxf2 12. Ne4 Qe3+ 13. Kb1 0-0 14. N2g3 d6 15. Nxd6 Nd7 16. Qe4 Qxe4+ 17. Ndxe4 Ne5 18. Rc1 f5 19. Nd6 f4 20. Nge4 Rad8 21. Be2 Bd2 22. Nxd2 Rxd6 23. Ne4 Rdd8 24. Rhf1 g5 25. h3 Bc8 26. b3 Bf5 27. Bf3 Nxf3 28. gxf3 Bxh3 29. Rh1 Bf5 30. Rxh6 Kg7 31. Rh5 Bxe4+ 32. fxe4 Kg6 33. Rch1 f3 34. Rh6+ Kg7 35. Rh7+ Kg8 36. R7h5 f2 37. Rxg5+ Kf7 38. Rf5+ Ke7 39. Rf1 Rxf5 40. exf5 Kf6 41. Rxf2 1-0

[Event "Titled Tuesday intern op 07th Jan Early"]
[Site "Chess.com INT"]
[Date "2025.01.07"]
[Round "6"]
[White "Sieciechowicz, Marcin"]
[Black "Timerkhanov, Alexander"]
[Result "0-1"]
[ECO "D15"]
[WhiteElo "2401"]
[BlackElo "2287"]
[PlyCount "78"]
[EventDate "2025.01.07"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "USA"]
[SourceTitle "CB03_2025"]
[SourceDate "2025.01.15"]
[SourceVersion "1"]
[SourceVersionDate "2025.01.15"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. Nf3 a6 5. c5 Bf5 6. Bf4 Nbd7 7. e3 e6 8. Be2 Be7 9. 0-0 h6 10. h3 0-0 11. b4 Ne4 12. Nxe4 Bxe4 13. a4 Bf6 14. Bg3 Bxf3 15. Bxf3 e5 16. Qd2 Re8 17. Rab1 Nf8 18. dxe5 Bxe5 19. Bxe5 Rxe5 20. Rfd1 Qh4 21. Qd4 Qxd4 22. exd4 Re7 23. b5 axb5 24. axb5 Ne6 25. bxc6 bxc6 26. Rb6 Rc7 27. Bg4 Nf8 28. Rdb1 Ra4 29. Rb8 g6 30. Rd8 h5 31. Bxh5 Kg7 32. Rbb8 Ne6 33. Rg8+ Kf6 34. Bg4 Nxd4 35. h4 Ra5 36. h5 gxh5 37. Bxh5 Rxc5 38. g4 Ne6 39. Rh8 d4 0-1

[Event "EU-ch 24th"]
[Site "Petrovac"]
[Date "2024.11.19"]
[Round "11"]
[White "Sieciechowicz, Marcin"]
[Black "Lauda, Alexandr"]
[Result "1-0"]
[ECO "E73"]
[WhiteElo "2416"]
[BlackElo "2222"]
[PlyCount "75"]
[EventDate "2024.11.08"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "MNE"]
[SourceTitle "CB47_2024"]
[SourceDate "2024.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2024.11.20"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 0-0 6. Be3 c5 7. d5 e6 8. Nf3 exd5 9. cxd5 a6 10. a4 Re8 11. Nd2 b6 12. 0-0 Ra7 13. h3 Rae7 14. Qc2 Nbd7 15. Rfe1 h6 16. Bf4 Ne5 17. Rad1 Nh7 18. Bf1 f5 19. Qb3 g5 20. Bxe5 Bxe5 21. Nc4 Bd4 22. Qxb6 Qxb6 23. Nxb6 fxe4 24. Nxc8 Rxc8 25. Bxa6 Rf8 26. Nxe4 g4 27. Rxd4 cxd4 28. Nf6+ Kf7 29. Rxe7+ Kxe7 30. Nxh7 Ra8 31. Bb5 gxh3 32. gxh3 Kf7 33. b4 Kg7 34. a5 Kxh7 35. Bd3+ Kg7 36. a6 Rc8 37. b5 Rc3 38. a7 1-0

[Event "EU-ch 24th"]
[Site "Petrovac"]
[Date "2024.11.18"]
[Round "10"]
[White "Gal, Andrej"]
[Black "Sieciechowicz, Marcin"]
[Result "1/2-1/2"]
[ECO "D79"]
[WhiteElo "2255"]
[BlackElo "2416"]
[PlyCount "66"]
[EventDate "2024.11.08"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "MNE"]
[SourceTitle "CB47_2024"]
[SourceDate "2024.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2024.11.20"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. g3 0-0 5. Bg2 c6 6. 0-0 d5 7. cxd5 cxd5 8. Ne5 Ne4 9. Nc3 Bf5 10. Bf4 Nxc3 11. bxc3 Nc6 12. Qb3 Nxe5 13. dxe5 e6 14. c4 g5 15. Be3 d4 16. Rad1 Bxe5 17. Qb5 Bf6 18. Bxd4 Bxd4 19. e3 Qb6 20. Rxd4 Qxb5 21. cxb5 e5 22. Rd5 Rfe8 23. Rc5 Re7 24. Rd1 Rae8 25. a4 b6 26. Rc6 Kg7 27. h4 gxh4 28. gxh4 Be6 29. Ra1 Rd8 30. a5 bxa5 31. Rxa5 Rd1+ 32. Kh2 Red7 33. Rc2 Bd5 1/2-1/2

[Event "EU-ch 24th"]
[Site "Petrovac"]
[Date "2024.11.17"]
[Round "9"]
[White "Sieciechowicz, Marcin"]
[Black "Hamidov, Allahverdi"]
[Result "1-0"]
[ECO "D36"]
[WhiteElo "2416"]
[BlackElo "2247"]
[PlyCount "56"]
[EventDate "2024.11.08"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "MNE"]
[SourceTitle "CB47_2024"]
[SourceDate "2024.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2024.11.20"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5 exd5 5. Bg5 c6 6. e3 h6 7. Bh4 Be7 8. Bd3 0-0 9. Qc2 Ne8 10. Bxe7 Qxe7 11. Nf3 Nd7 12. 0-0 Nd6 13. Rae1 Nf6 14. Ne5 c5 15. dxc5 Nde4 16. Nf3 Nxc5 17. Rd1 Nxd3 18. Qxd3 Be6 19. Nd4 Rac8 20. Nde2 Rfd8 21. Nf4 Qb4 22. Rd2 Rd7 23. Qd4 Qa5 24. Rfd1 Ne4 25. Nxe6 fxe6 26. Nxe4 Rc4 27. Qxc4 dxc4 28. Rxd7 Qxa2 1-0

[Event "EU-ch 24th"]
[Site "Petrovac"]
[Date "2024.11.16"]
[Round "8"]
[White "Rychagov, Nikita1"]
[Black "Sieciechowicz, Marcin"]
[Result "1-0"]
[ECO "C02"]
[WhiteElo "2217"]
[BlackElo "2416"]
[PlyCount "93"]
[EventDate "2024.11.08"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "MNE"]
[SourceTitle "CB47_2024"]
[SourceDate "2024.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2024.11.20"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Bd7 6. Be2 Nge7 7. 0-0 Nf5 8. dxc5 Bxc5 9. Bd3 0-0 10. Bf4 h6 11. h3 f6 12. Nbd2 fxe5 13. Nxe5 Bd6 14. Re1 Nxe5 15. Bxe5 Bxe5 16. Rxe5 Qf6 17. Qe2 Ne7 18. Nf3 Nc6 19. Re3 a6 20. Re1 Rae8 21. Bc2 Re7 22. Qd3 g5 23. Qd2 Qg7 24. Nh2 Rf4 25. g3 Rf8 26. Ng4 Kh8 27. Ba4 b5 28. Bc2 Na5 29. b3 Nc6 30. b4 Bc8 31. a3 Rd8 32. Ne5 Nxe5 33. Rxe5 Rf7 34. Qd4 Rdf8 35. R1e2 Rf3 36. a4 bxa4 37. Bxa4 R3f5 38. Bc2 Rxe5 39. Rxe5 Kg8 40. Bd3 Rf3 41. Be2 Rf8 42. Bg4 Qf6 43. Qe3 Kf7 44. c4 dxc4 45. Rc5 Kg7 46. Rc7+ Kh8 47. Qc5 1-0

[Event "EU-ch 24th"]
[Site "Petrovac"]
[Date "2024.11.15"]
[Round "7"]
[White "Sieciechowicz, Marcin"]
[Black "Djokic, Mihailo"]
[Result "1/2-1/2"]
[ECO "E05"]
[WhiteElo "2416"]
[BlackElo "2204"]
[PlyCount "93"]
[EventDate "2024.11.08"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "MNE"]
[SourceTitle "CB47_2024"]
[SourceDate "2024.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2024.11.20"]
[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 Bd7 9. Qxc4 Bc6 10. Bg5 Nbd7 11. Nc3 a5 12. Rfe1 Ra6 13. e4 h6 14. Bxf6 Nxf6 15. Ne5 Be8 16. Red1 Nd7 17. Nxd7 Bxd7 18. e5 Rb6 19. Qe2 Bb4 20. h4 Qe7 21. Be4 Bc6 22. Bxc6 Bxc3 23. Bb5 Bb4 24. Rac1 f5 25. exf6 Rxf6 26. Qe4 Qf7 27. Rc2 Rd6 28. Bd3 c6 29. Re2 Kf8 30. Kg2 Qh5 31. Bc4 Qf5 32. Rd3 Qxe4+ 33. Rxe4 c5 34. dxc5 Rxd3 35. Bxd3 Bxc5 36. f4 Ke7 37. Bc4 Bd6 38. f5 e5 39. Rg4 Kf8 40. Be6 h5 41. Rc4 g6 42. Rc8+ Kg7 43. Rg8+ Kh6 44. Rh8+ Kg7 45. Rd8 Bc5 46. Rg8+ Kh6 47. Rh8+ 1/2-1/2

[Event "EU-ch 24th"]
[Site "Petrovac"]
[Date "2024.11.13"]
[Round "6"]
[White "Piorun, Kacper"]
[Black "Sieciechowicz, Marcin"]
[Result "1-0"]
[ECO "C48"]
[WhiteElo "2580"]
[BlackElo "2416"]
[PlyCount "115"]
[EventDate "2024.11.08"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "MNE"]
[SourceTitle "CB47_2024"]
[SourceDate "2024.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2024.11.20"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Nc3 Nc6 4. Bb5 Nd4 5. 0-0 Nxb5 6. Nxb5 c6 7. Nc3 d6 8. d4 Qc7 9. h3 Be7 10. a4 h6 11. Re1 g5 12. Nh2 Rg8 13. Nf1 h5 14. a5 g4 15. h4 Nd7 16. Ng3 Bxh4 17. Nxh5 Nf6 18. Ng3 Be6 19. Be3 Bg5 20. Qd2 Bxe3 21. Qxe3 a6 22. dxe5 dxe5 23. Na4 Nd7 24. b4 0-0-0 25. Rec1 Kb8 26. c4 Qd6 27. Rab1 Qd4 28. Qe1 Nf6 29. Nc5 Qd2 30. Qxd2 Rxd2 31. b5 axb5 32. cxb5 cxb5 33. Rxb5 Rc8 34. Rxb7+ Ka8 35. Rb6 Rd6 36. Ne2 Rd7 37. Ra6+ Ra7 38. Rxa7+ Kxa7 39. Nxe6 Rxc1+ 40. Nxc1 fxe6 41. Nd3 Ka6 42. Nxe5 Kxa5 43. Kf1 Kb5 44. Ke2 Nxe4 45. Nxg4 Kc6 46. Ke3 Nc5 47. Nf6 Nb7 48. g4 Kd6 49. Ne4+ Ke7 50. Kf4 Kf7 51. Ke5 Ke7 52. g5 Na5 53. g6 Nc6+ 54. Kf4 Kf8 55. Kg5 Kg7 56. Ng3 Ne7 57. Nh5+ Kg8 58. Kf6 1-0

[Event "EU-ch 24th"]
[Site "Petrovac"]
[Date "2024.11.12"]
[Round "5"]
[White "Sieciechowicz, Marcin"]
[Black "Tamas, Christian Arrydan"]
[Result "1-0"]
[ECO "E52"]
[WhiteElo "2416"]
[BlackElo "2166"]
[PlyCount "114"]
[EventDate "2024.11.08"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "MNE"]
[SourceTitle "CB47_2024"]
[SourceDate "2024.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2024.11.20"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 0-0 5. Bd2 d5 6. Nf3 b6 7. cxd5 exd5 8. Rc1 Bb7 9. Bd3 a6 10. 0-0 Bd6 11. Ne2 Nbd7 12. Ng3 g6 13. a3 Ne4 14. Bb4 c5 15. dxc5 bxc5 16. Bxe4 cxb4 17. Bxd5 Bxd5 18. Qxd5 Nf6 19. Qc6 Bxg3 20. hxg3 bxa3 21. bxa3 Rc8 22. Qa4 Rxc1 23. Rxc1 Qb6 24. Qc4 h5 25. a4 Ng4 26. Nh2 Nxh2 27. Kxh2 Rd8 28. Qf4 Qe6 29. Rc5 Rd5 30. Qb8+ Kh7 31. Rc2 Qf6 32. Qb3 Rd7 33. Qc4 Rd1 34. Qf4 Qxf4 35. gxf4 Ra1 36. Rc4 Kg7 37. e4 Ra3 38. e5 a5 39. f3 Ra2 40. Kh3 Ra1 41. Kh4 Ra2 42. g4 hxg4 43. fxg4 Kh6 44. f5 Re2 45. g5+ Kh7 46. e6 fxe6 47. f6 Kg8 48. Rc7 Re4+ 49. Kg3 Rxa4 50. Rg7+ Kf8 51. Rxg6 Ra1 52. Rh6 Rg1+ 53. Kf4 Rf1+ 54. Ke5 Kg8 55. g6 a4 56. g7 Kf7 57. Rh8 Re1+ 1-0

[Event "EU-ch 24th"]
[Site "Petrovac"]
[Date "2024.11.11"]
[Round "4"]
[White "Dubnevych, Maksym"]
[Black "Sieciechowicz, Marcin"]
[Result "1/2-1/2"]
[ECO "D85"]
[WhiteElo "2264"]
[BlackElo "2416"]
[PlyCount "76"]
[EventDate "2024.11.08"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "MNE"]
[SourceTitle "CB47_2024"]
[SourceDate "2024.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2024.11.20"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Nf3 c5 8. Bb5+ Nd7 9. 0-0 0-0 10. Re1 a6 11. Bf1 b6 12. Rb1 Qc7 13. a4 Bb7 14. Qb3 e6 15. d5 exd5 16. exd5 c4 17. Bxc4 Rac8 18. Re7 Bf6 19. d6 Qxc4 20. Qxc4 Rxc4 21. Rxd7 Bd5 22. Be3 Rxa4 23. Bd4 Kg7 24. Re1 b5 25. Bxf6+ Kxf6 26. Nd4 b4 27. cxb4 Rxb4 28. Rd1 Rfb8 29. h3 Rb1 30. Rxb1 Rxb1+ 31. Kh2 Rd1 32. Nc2 Be6 33. Rd8 h5 34. Nb4 a5 35. Na6 a4 36. Nc5 a3 37. Ra8 a2 38. Nxe6 Kxe6 1/2-1/2

[Event "EU-ch 24th"]
[Site "Petrovac"]
[Date "2024.11.10"]
[Round "3"]
[White "Sieciechowicz, Marcin"]
[Black "Djurovic, Peko"]
[Result "1/2-1/2"]
[ECO "D36"]
[WhiteElo "2416"]
[BlackElo "2198"]
[PlyCount "232"]
[EventDate "2024.11.08"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "MNE"]
[SourceTitle "CB47_2024"]
[SourceDate "2024.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2024.11.20"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5 exd5 5. Bg5 c6 6. e3 h6 7. Bh4 Be7 8. Bd3 0-0 9. Nf3 Nbd7 10. 0-0 Ne4 11. Bxe7 Qxe7 12. Qc2 Re8 13. Rae1 a5 14. Nd2 Ndf6 15. f3 Nxd2 16. Qxd2 Be6 17. Bb1 c5 18. dxc5 Qxc5 19. Ne2 Rac8 20. Nd4 Qb6 21. Rc1 Bd7 22. Rxc8 Rxc8 23. Rc1 Rxc1+ 24. Qxc1 g6 25. Qc3 Ne8 26. Bd3 h5 27. Bc2 Nd6 28. Kf2 Nb5 29. Nxb5 Qxb5 30. Bb3 Be6 31. Qd4 Qc6 32. Qc3 Qb6 33. h3 Kh7 34. Bc2 Qd8 35. Qd4 Qc7 36. Bd3 Qc1 37. Be2 Qc2 38. a3 Kg8 39. Qb6 Kh7 40. Qxb7 d4 41. Qb5 Qd2 42. exd4 Qxd4+ 43. Kf1 a4 44. Qb4 Qd7 45. Qc3 Bb3 46. Bd3 Qd5 47. Bc2 Qb5+ 48. Kg1 Qb6+ 49. Kh1 Bxc2 50. Qxc2 Qb5 51. Qc3 Qd7 52. Qb4 Qd1+ 53. Kh2 Qc2 54. Qc3 Qd1 55. Qe5 Qc2 56. Qd4 Kg8 57. h4 Qc7+ 58. Kh3 Qc2 59. Kg3 Qc7+ 60. Qf4 Qc2 61. Qe5 Qd1 62. Qb8+ Kh7 63. Qb4 Qc2 64. Qc3 Qe2 65. Kh2 Qd1 66. Qe5 Kg8 67. Qe4 Qd6+ 68. f4 Qd7 69. Qe5 Qd8 70. Qg5 Qd4 71. Qe5 Qd8 72. Qe1 Qf6 73. Qf2 Kh7 74. Kg1 Qd6 75. f5 Qd1+ 76. Kh2 Qd6+ 77. g3 Qd1 78. fxg6+ fxg6 79. Qa7+ Kh6 80. Qe3+ Kh7 81. Qf2 Kh6 82. Kg2 Kh7 83. Qa7+ Kh6 84. Qe3+ Kh7 85. Qe7+ Kg8 86. Qe6+ Kh7 87. Qf7+ Kh6 88. Qf3 Qd2+ 89. Kh3 Qd7+ 90. Kh2 Qd2+ 91. Qg2 Qd1 92. Qf2 Kh7 93. Qf7+ Kh6 94. Qf8+ Kh7 95. Qf2 Kh6 96. Kg2 Kg7 97. Qa7+ Kg8 98. Qb8+ Kh7 99. Kf2 Qd2+ 100. Kf3 Qd3+ 101. Kf4 Qd4+ 102. Kg5 Qg7 103. Qe8 Qh6+ 104. Kf6 Qg7+ 105. Kg5 Qh6+ 106. Kf6 Qg7+ 107. Ke6 Qxb2 108. Qe7+ Kh6 109. Qg5+ Kh7 110. Qe7+ Kh6 111. Qf8+ Kh7 112. Qf7+ Kh6 113. Qf4+ Kh7 114. Qf7+ Kh6 115. Qf8+ Kh7 116. Qe7+ Kh6 1/2-1/2

[Event "EU-ch 24th"]
[Site "Petrovac"]
[Date "2024.11.09"]
[Round "2"]
[White "Sanal, Vahap"]
[Black "Sieciechowicz, Marcin"]
[Result "1-0"]
[ECO "A45"]
[WhiteElo "2561"]
[BlackElo "2416"]
[PlyCount "113"]
[EventDate "2024.11.08"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "MNE"]
[SourceTitle "CB47_2024"]
[SourceDate "2024.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2024.11.20"]
[SourceQuality "1"]

1. d4 Nf6 2. Bg5 g6 3. Bxf6 exf6 4. c4 d5 5. cxd5 Qxd5 6. Nc3 Bb4 7. Qa4+ Nc6 8. Qxb4 Nxb4 9. Nxd5 Nxd5 10. Rc1 c6 11. e3 Be6 12. a3 0-0-0 13. Ne2 Rhe8 14. g3 Bg4 15. Nc3 Nxc3 16. bxc3 Bf3 17. Rg1 c5 18. Bc4 Bd5 19. Be2 f5 20. c4 Bc6 21. d5 Bd7 22. Kd2 Kc7 23. Rb1 Rb8 24. Rb2 b6 25. Rgb1 Rb7 26. Bd1 Reb8 27. a4 Kd6 28. Ra1 a6 29. Kc3 f6 30. Bc2 Be8 31. Bd3 Bd7 32. Be2 Be8 33. Bf1 Bd7 34. h4 h6 35. Bd3 h5 36. Kd2 Be8 37. Kc3 Bd7 38. Re2 Re8 39. Rb1 Reb8 40. Ra2 Be8 41. f3 Bd7 42. Rf1 Re8 43. Kd2 Reb8 44. g4 fxg4 45. fxg4 Ke5 46. gxh5 gxh5 47. Kc3 b5 48. axb5 axb5 49. Ra5 bxc4 50. Bxc4 Rg8 51. Rxc5 Rg3 52. d6+ Kxd6 53. Rxh5 f5 54. Kd4 Rg4+ 55. Rf4 Rg6 56. Rh7 Rb4 57. Kc3 1-0

[Event "POL-ch Rapid"]
[Site "Lublin"]
[Date "2024.10.05"]
[Round "6"]
[White "Gorkiewicz, Mateusz"]
[Black "Sieciechowicz, Marcin"]
[Result "1/2-1/2"]
[ECO "B90"]
[WhiteElo "2231"]
[BlackElo "2416"]
[PlyCount "61"]
[EventDate "2024.10.05"]
[EventType "swiss (rapid)"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CB45_2024"]
[Source "ChessBase"]
[SourceDate "2024.11.06"]
[SourceVersion "1"]
[SourceVersionDate "2024.11.06"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. a4 e5 7. Nf3 Be7 8. Bg5 Be6 9. Bxf6 Bxf6 10. Nd5 Nd7 11. Bc4 0-0 12. 0-0 Rc8 13. b3 Nb6 14. Nxf6+ Qxf6 15. Bxe6 Qxe6 16. c4 Nd7 17. Re1 a5 18. Ra2 Nc5 19. Re3 Rc6 20. Nd2 g6 21. Nb1 f5 22. exf5 gxf5 23. f3 f4 24. Ree2 Qg6 25. Nc3 Qd3 26. Qxd3 Nxd3 27. Rac2 Nc5 28. Rb2 Nd3 29. Rbc2 Nc5 30. Rb2 Nd3 31. Rbc2 1/2-1/2

[Event "POL-ch Rapid"]
[Site "Lublin"]
[Date "2024.10.05"]
[Round "2"]
[White "Kozlowska, Marzena"]
[Black "Sieciechowicz, Marcin"]
[Result "0-1"]
[ECO "B92"]
[WhiteElo "1960"]
[BlackElo "2416"]
[PlyCount "60"]
[EventDate "2024.10.05"]
[EventType "swiss (rapid)"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CB45_2024"]
[Source "ChessBase"]
[SourceDate "2024.11.06"]
[SourceVersion "1"]
[SourceVersionDate "2024.11.06"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. a4 e5 7. Nb3 Be7 8. Be3 0-0 9. Be2 Be6 10. 0-0 Nbd7 11. f4 Rc8 12. Kh1 Qc7 13. f5 Bc4 14. g4 Bxe2 15. Qxe2 Qc4 16. Qg2 d5 17. exd5 Qxg4 18. Rad1 Qxg2+ 19. Kxg2 Bb4 20. Na2 Rxc2+ 21. Rf2 Ng4 22. Rxc2 Nxe3+ 23. Kh3 Nxc2 24. Rc1 Bd6 25. Rxc2 g6 26. fxg6 hxg6 27. Na5 Rb8 28. Nc3 f5 29. Kg2 Bb4 30. h4 Bxa5 0-1

[Event "POL-ch Rapid"]
[Site "Lublin"]
[Date "2024.10.05"]
[Round "8"]
[White "Kumala, Aleksander"]
[Black "Sieciechowicz, Marcin"]
[Result "0-1"]
[ECO "D00"]
[WhiteElo "2131"]
[BlackElo "2416"]
[PlyCount "98"]
[EventDate "2024.10.05"]
[EventType "swiss (rapid)"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CB45_2024"]
[Source "ChessBase"]
[SourceDate "2024.11.06"]
[SourceVersion "1"]
[SourceVersionDate "2024.11.06"]
[SourceQuality "1"]

1. d4 Nf6 2. Bg5 d5 3. Nd2 g6 4. Bxf6 exf6 5. e3 Bd6 6. c4 dxc4 7. Bxc4 0-0 8. Ngf3 c5 9. 0-0 Nc6 10. dxc5 Bxc5 11. Rc1 Qe7 12. a3 Bb6 13. h3 Bf5 14. Qe2 Rfd8 15. Rfd1 Na5 16. b4 Nxc4 17. Nxc4 Bc7 18. Nd4 Be6 19. Nxe6 Qxe6 20. Rxd8+ Rxd8 21. Qf3 Qd5 22. Qxd5 Rxd5 23. Nd2 Bb6 24. Ne4 Kg7 25. a4 f5 26. Nc3 Rd2 27. a5 Bd8 28. Rd1 Rxd1+ 29. Nxd1 Kf6 30. Kf1 Ke5 31. Ke2 Be7 32. b5 Kd5 33. Kd3 Kc5 34. Nc3 Bf6 35. b6 a6 36. Ne2 Kb5 37. Nf4 Kxa5 38. Kc4 Bd8 39. Kc5 Bxb6+ 40. Kd6 Bd8 41. Kd7 Bg5 42. Nd5 Kb5 43. Ke8 Kc5 44. Nc3 b5 45. Kxf7 b4 46. Na4+ Kb5 47. Nb2 a5 48. Kg8 a4 49. Kxh7 a3 0-1

[Event "POL-ch Rapid"]
[Site "Lublin"]
[Date "2024.10.05"]
[Round "4"]
[White "Pilzak, Marcin"]
[Black "Sieciechowicz, Marcin"]
[Result "0-1"]
[ECO "B97"]
[WhiteElo "2077"]
[BlackElo "2416"]
[PlyCount "70"]
[EventDate "2024.10.05"]
[EventType "swiss (rapid)"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CB45_2024"]
[Source "ChessBase"]
[SourceDate "2024.11.06"]
[SourceVersion "1"]
[SourceVersionDate "2024.11.06"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Qb6 8. Nb3 Nbd7 9. Qf3 Be7 10. 0-0-0 Qc7 11. g4 b5 12. a3 Rb8 13. Bh4 h6 14. Bf2 g5 15. h4 gxf4 16. Qxf4 Ne5 17. Be2 Nexg4 18. Bxg4 e5 19. Qg3 Bxg4 20. Rdf1 Rc8 21. Na1 Be6 22. Kb1 Rg8 23. Qf3 Rb8 24. Rhg1 Rxg1 25. Rxg1 b4 26. axb4 Rxb4 27. h5 Qb7 28. Kc1 Nxe4 29. Rg8+ Kd7 30. Nxe4 Qxe4 31. Qc3 Qc4 32. Qf3 Qf4+ 33. Qxf4 Rxf4 34. Be3 Rf1+ 35. Kd2 Rxa1 0-1

[Event "POL-ch Rapid"]
[Site "Lublin"]
[Date "2024.10.05"]
[Round "5"]
[White "Sieciechowicz, Marcin"]
[Black "Cyborowski, Lukasz"]
[Result "1/2-1/2"]
[ECO "D02"]
[WhiteElo "2416"]
[BlackElo "2454"]
[PlyCount "51"]
[EventDate "2024.10.05"]
[EventType "swiss (rapid)"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CB45_2024"]
[Source "ChessBase"]
[SourceDate "2024.11.06"]
[SourceVersion "1"]
[SourceVersionDate "2024.11.06"]
[SourceQuality "1"]

1. d4 d5 2. Bf4 Nf6 3. e3 e6 4. Nf3 Bd6 5. Bg3 b6 6. Bd3 c5 7. c3 0-0 8. Nbd2 Ba6 9. Bxa6 Nxa6 10. Qe2 Nb8 11. 0-0 Nc6 12. Rfd1 Bxg3 13. hxg3 Qe7 14. Rac1 Rac8 15. dxc5 Qxc5 16. e4 dxe4 17. Nxe4 Nxe4 18. Qxe4 Rfd8 19. Qe2 h6 20. Rxd8+ Rxd8 21. Rd1 Rxd1+ 22. Qxd1 Qc4 23. Qd7 g5 24. Qc8+ Kg7 25. Nd4 Qd3 26. Qxc6 1/2-1/2

[Event "POL-ch Rapid"]
[Site "Lublin"]
[Date "2024.10.05"]
[Round "3"]
[White "Sieciechowicz, Marcin"]
[Black "Hury, Tymoteusz"]
[Result "1-0"]
[ECO "E61"]
[WhiteElo "2416"]
[BlackElo "2222"]
[PlyCount "75"]
[EventDate "2024.10.05"]
[EventType "swiss (rapid)"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CB45_2024"]
[Source "ChessBase"]
[SourceDate "2024.11.06"]
[SourceVersion "1"]
[SourceVersionDate "2024.11.06"]
[SourceQuality "1"]

1. d4 Nf6 2. Bf4 g6 3. e3 Bg7 4. Nf3 b6 5. Be2 Bb7 6. 0-0 d6 7. c4 Nbd7 8. h3 0-0 9. Nc3 Re8 10. d5 e5 11. Bh2 e4 12. Nd4 a5 13. a3 Qe7 14. Qc2 h5 15. b4 Nf8 16. Ncb5 N8h7 17. Rfc1 h4 18. Rab1 axb4 19. axb4 Ng5 20. Bf1 Nh5 21. c5 bxc5 22. bxc5 Bxd4 23. Nxd4 Bxd5 24. cxd6 cxd6 25. Rb5 Ra2 26. Qc7 Qf6 27. Rc2 Ra1 28. Rxd5 Nf3+ 29. gxf3 exf3 30. Qxd6 Re6 31. Qd8+ Kh7 32. Qxf6 Rxf6 33. Rdc5 Ng7 34. Rc1 Ra2 35. Be5 Rb6 36. R5c2 Rxc2 37. Rxc2 Nh5 38. Nxf3 1-0

[Event "POL-ch Rapid"]
[Site "Lublin"]
[Date "2024.10.05"]
[Round "1"]
[White "Sieciechowicz, Marcin"]
[Black "Kilanski, Janusz"]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "2416"]
[BlackElo "1668"]
[PlyCount "100"]
[EventDate "2024.10.05"]
[EventType "swiss (rapid)"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CB45_2024"]
[Source "ChessBase"]
[SourceDate "2024.11.06"]
[SourceVersion "1"]
[SourceVersionDate "2024.11.06"]
[SourceQuality "1"]

1. d4 Nf6 2. Bf4 e6 3. e3 d5 4. Nf3 a6 5. c3 Bd6 6. Bg3 Qe7 7. Bd3 Nbd7 8. Nbd2 c5 9. Qe2 0-0 10. 0-0 b6 11. e4 dxe4 12. Nxe4 Bxg3 13. hxg3 Bb7 14. Rfe1 cxd4 15. Nxd4 Nxe4 16. Bxe4 Bxe4 17. Qxe4 Nc5 18. Qe3 Qc7 19. Rad1 Rfd8 20. Qe2 b5 21. Qf3 Rac8 22. Qf4 Qb6 23. Qe3 Na4 24. Rd2 Qc7 25. Red1 Nb6 26. Nf3 h6 27. Rd4 Nd5 28. Qe2 Nb6 29. Ne5 Rxd4 30. Rxd4 Rd8 31. Qd3 Rxd4 32. Qxd4 Nd5 33. Nf3 a5 34. a4 bxa4 35. Qxa4 Nf6 36. Qd4 Nd5 37. c4 Nb4 38. Ne5 f6 39. Nf3 Kf7 40. Nd2 e5 41. Qe4 Qd7 42. Nf3 Nd3 43. Qe2 a4 44. Qc2 e4 45. Nd2 f5 46. Nf1 Nc5 47. Qc3 g6 48. Ne3 Qd3 49. Qh8 Ne6 50. Kh2 h5 1-0

[Event "POL-ch Rapid"]
[Site "Lublin"]
[Date "2024.10.05"]
[Round "9"]
[White "Sieciechowicz, Marcin"]
[Black "Raczek, Krzysztof"]
[Result "0-1"]
[ECO "D02"]
[WhiteElo "2416"]
[BlackElo "2435"]
[PlyCount "152"]
[EventDate "2024.10.05"]
[EventType "swiss (rapid)"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CB45_2024"]
[Source "ChessBase"]
[SourceDate "2024.11.06"]
[SourceVersion "1"]
[SourceVersionDate "2024.11.06"]
[SourceQuality "1"]

1. d4 Nf6 2. Bf4 d5 3. e3 c5 4. c3 Nc6 5. Nd2 e6 6. Ngf3 cxd4 7. exd4 Nh5 8. Bg3 g6 9. Bd3 Bg7 10. 0-0 0-0 11. Re1 Nxg3 12. hxg3 Bd7 13. Nb3 Qc7 14. Qd2 Rae8 15. Rad1 a6 16. Qf4 e5 17. dxe5 Nxe5 18. Nxe5 Bxe5 19. Qb4 h5 20. Qc5 Bc6 21. Qb4 Bd6 22. Qh4 Bd7 23. Qg5 Be5 24. Nd4 Kg7 25. Nf3 Bf6 26. Qd2 Rh8 27. Rxe8 Bxe8 28. Re1 Bc6 29. Nd4 Bd7 30. Bc2 h4 31. gxh4 Rxh4 32. g3 Rh8 33. Bb3 Qd6 34. Qd3 Qc5 35. Qe3 Qd6 36. Qf3 Rh5 37. Re3 b5 38. a3 a5 39. Qe2 b4 40. axb4 axb4 41. Qd2 bxc3 42. bxc3 Qb6 43. Bd1 Rh8 44. Bf3 Bg5 45. Bg2 Bxe3 46. fxe3 Qb1+ 47. Kf2 Bh3 48. Nf3 Bxg2 49. Kxg2 Qe4 50. Qb2 Rc8 51. Kf2 Qc4 52. Qd2 Qxc3 53. Qxd5 Qb2+ 54. Nd2 Qf6+ 55. Ke2 Rd8 56. Qa5 Rh8 57. Qd5 Rh5 58. Qc4 Rh2+ 59. Kd3 Qd6+ 60. Qd4+ Qxd4+ 61. exd4 Rg2 62. d5 Rxg3+ 63. Kd4 Rg1 64. Nf3 Rd1+ 65. Ke5 g5 66. Ke4 g4 67. Nh4 Kf6 68. Ng2 Kg5 69. Ke5 f5 70. d6 Rd2 71. Ne3 g3 72. Nc4 Rd3 73. Ke6 Kf4 74. Ne5 Rxd6+ 75. Kxd6 g2 76. Ng6+ Kg3 0-1

[Event "POL-ch Rapid"]
[Site "Lublin"]
[Date "2024.10.05"]
[Round "7"]
[White "Sieciechowicz, Marcin"]
[Black "Rogowski, Jaroslaw"]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "2416"]
[BlackElo "2075"]
[PlyCount "47"]
[EventDate "2024.10.05"]
[EventType "swiss (rapid)"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CB45_2024"]
[Source "ChessBase"]
[SourceDate "2024.11.06"]
[SourceVersion "1"]
[SourceVersionDate "2024.11.06"]
[SourceQuality "1"]

1. d4 d5 2. Bf4 Nf6 3. e3 e6 4. Nf3 Bd6 5. Bg3 Nbd7 6. Bxd6 cxd6 7. Be2 e5 8. 0-0 0-0 9. Nc3 e4 10. Nd2 Nb6 11. f3 Re8 12. Qe1 Qe7 13. fxe4 dxe4 14. Qg3 d5 15. Nb5 Be6 16. Nc7 Rac8 17. Nxe8 Nxe8 18. c3 f5 19. Rac1 Nd6 20. b3 Kh8 21. c4 dxc4 22. Nxc4 Nbxc4 23. bxc4 Nxc4 24. Bxc4 1-0

[Event "POL-chT 1st League"]
[Site "Darlowo"]
[Date "2024.09.22"]
[Round "9.1"]
[White "Galperin, Platon"]
[Black "Sieciechowicz, Marcin"]
[Result "1-0"]
[ECO "D10"]
[WhiteElo "2518"]
[BlackElo "2419"]
[PlyCount "77"]
[EventDate "2024.09.14"]
[EventType "team-swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2025"]
[Source "ChessBase"]
[SourceDate "2024.10.14"]
[SourceVersion "1"]
[SourceVersionDate "2024.10.14"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. cxd5 cxd5 4. Bf4 Nf6 5. e3 Nc6 6. Bd3 e6 7. Nc3 h6 8. Rc1 Bd6 9. Bxd6 Qxd6 10. Nf3 0-0 11. 0-0 Bd7 12. Qe2 Rfd8 13. e4 dxe4 14. Nxe4 Nxe4 15. Qxe4 g6 16. Qe3 Kg7 17. Be4 Be8 18. Rfd1 Qe7 19. h4 Qf6 20. g4 Kg8 21. g5 hxg5 22. hxg5 Qh8 23. Kg2 Rd6 24. Qf4 Rad8 25. Rh1 Qg7 26. Rh4 Nxd4 27. Rch1 Nf5 28. Bxf5 gxf5 29. Qh2 Kf8 30. Rh7 Qg6 31. Rh6 Qg7 32. Rh7 Qg6 33. Rh6 Qg7 34. g6 Qf6 35. Qg3 Bc6 36. g7+ Qxg7 37. Rh8+ Qxh8 38. Rxh8+ Ke7 39. Qg5+ 1-0

[Event "POL-chT 1st League"]
[Site "Darlowo"]
[Date "2024.09.21"]
[Round "8.7"]
[White "Sieciechowicz, Marcin"]
[Black "Kucza, Karol"]
[Result "1-0"]
[ECO "E18"]
[WhiteElo "2419"]
[BlackElo "2379"]
[PlyCount "85"]
[EventDate "2024.09.14"]
[EventType "team-swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2025"]
[Source "ChessBase"]
[SourceDate "2024.10.14"]
[SourceVersion "1"]
[SourceVersionDate "2024.10.14"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. 0-0 0-0 7. Nc3 Ne4 8. Bd2 d5 9. cxd5 exd5 10. Rc1 Nd7 11. Bf4 Nxc3 12. Rxc3 c5 13. Qc2 c4 14. b3 Rc8 15. bxc4 Bb4 16. Rb3 Rxc4 17. Qb2 Ba5 18. h4 Re8 19. Re3 Rxe3 20. fxe3 Qe7 21. Bh3 f6 22. Bf5 Nf8 23. Bd3 Rc8 24. Rc1 Qb4 25. Qa1 Rxc1+ 26. Qxc1 Qc3 27. Qb1 Bb4 28. Kf2 a5 29. g4 g6 30. g5 f5 31. h5 Bc6 32. hxg6 hxg6 33. Qh1 Be8 34. Ne5 Ne6 35. Qxd5 Qc8 36. Ba6 Qxa6 37. Qxe6+ Kf8 38. Qf6+ Kg8 39. Nxg6 Qc8 40. Be5 Qd7 41. Qh8+ Kf7 42. Qg7+ Ke6 43. Nf4# 1-0

[Event "POL-chT 1st League"]
[Site "Darlowo"]
[Date "2024.09.20"]
[Round "7.7"]
[White "Solodovnichenko, Yuri"]
[Black "Sieciechowicz, Marcin"]
[Result "1-0"]
[ECO "C17"]
[WhiteElo "2490"]
[BlackElo "2419"]
[PlyCount "81"]
[EventDate "2024.09.14"]
[EventType "team-swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2025"]
[Source "ChessBase"]
[SourceDate "2024.10.14"]
[SourceVersion "1"]
[SourceVersionDate "2024.10.14"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. Bd2 Ne7 6. a3 Bxc3 7. Bxc3 b6 8. h4 Ba6 9. Bxa6 Nxa6 10. h5 h6 11. Qe2 Nb8 12. f4 Nf5 13. Rh3 Nc6 14. Nf3 cxd4 15. Bd2 Qd7 16. 0-0-0 0-0-0 17. g4 Nfe7 18. b4 Kb7 19. b5 Nb8 20. Bb4 Rc8 21. Rxd4 Rc7 22. Nd2 Rhc8 23. c3 a5 24. bxa6+ Nxa6 25. Ne4 Nc6 26. Nd6+ Ka7 27. Nxc8+ Qxc8 28. Rd2 Ncxb4 29. axb4 Rxc3+ 30. Rc2 Rxc2+ 31. Qxc2 Qd7 32. Ra3 Kb7 33. Qa4 Qc7+ 34. Kd2 Qc4 35. b5 Qxa4 36. Rxa4 Nc5 37. Ra3 d4 38. Ke2 Kb8 39. Kf3 Kb7 40. Ra1 Nb3 41. Rd1 1-0

[Event "POL-chT 1st League"]
[Site "Darlowo"]
[Date "2024.09.19"]
[Round "6.19"]
[White "Sieciechowicz, Marcin"]
[Black "Stachowiak, Kamil"]
[Result "1/2-1/2"]
[ECO "D35"]
[WhiteElo "2419"]
[BlackElo "2428"]
[PlyCount "81"]
[EventDate "2024.09.14"]
[EventType "team-swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2025"]
[Source "ChessBase"]
[SourceDate "2024.10.14"]
[SourceVersion "1"]
[SourceVersionDate "2024.10.14"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. cxd5 exd5 5. Bg5 c6 6. e3 h6 7. Bh4 Be6 8. Bd3 Nbd7 9. h3 Be7 10. Bg3 Qb6 11. Nge2 0-0 12. 0-0 Rfe8 13. Rb1 a5 14. Nf4 Nf8 15. Na4 Qd8 16. Rc1 Bc8 17. Qb3 N8d7 18. Qc2 Bf8 19. Rfd1 Nb6 20. Nc3 a4 21. a3 Bd7 22. Re1 Ra5 23. Rcd1 Qa8 24. Qe2 Nc8 25. Nh5 Nxh5 26. Qxh5 Nd6 27. Qf3 Qd8 28. Bxd6 Bxd6 29. Bc2 b5 30. e4 b4 31. Nxa4 bxa3 32. bxa3 dxe4 33. Rxe4 Rxe4 34. Qxe4 g6 35. Qe3 Qg5 36. Qxg5 hxg5 37. Bb3 Bxa3 38. Nb6 Be8 39. Re1 Kf8 40. Nc4 Ra7 41. Nxa3 1/2-1/2

[Event "POL-chT 1st League"]
[Site "Darlowo"]
[Date "2024.09.18"]
[Round "5.13"]
[White "Pacan Milej, Kosma"]
[Black "Sieciechowicz, Marcin"]
[Result "1/2-1/2"]
[ECO "D14"]
[WhiteElo "2430"]
[BlackElo "2419"]
[PlyCount "22"]
[EventDate "2024.09.14"]
[EventType "team-swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2025"]
[Source "ChessBase"]
[SourceDate "2024.10.14"]
[SourceVersion "1"]
[SourceVersionDate "2024.10.14"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. cxd5 cxd5 4. Nc3 Nc6 5. Bf4 Nf6 6. e3 Bf5 7. Nf3 e6 8. Bd3 Bxd3 9. Qxd3 Bd6 10. Bxd6 Qxd6 11. 0-0 0-0 1/2-1/2

[Event "POL-chT 1st League"]
[Site "Darlowo"]
[Date "2024.09.17"]
[Round "4.31"]
[White "Sieciechowicz, Marcin"]
[Black "Zylka, Stanislaw"]
[Result "1/2-1/2"]
[ECO "D27"]
[WhiteElo "2419"]
[BlackElo "2372"]
[PlyCount "126"]
[EventDate "2024.09.14"]
[EventType "team-swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2025"]
[Source "ChessBase"]
[SourceDate "2024.10.14"]
[SourceVersion "1"]
[SourceVersionDate "2024.10.14"]
[SourceQuality "1"]

1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 e6 5. Bxc4 c5 6. 0-0 a6 7. dxc5 Bxc5 8. Qxd8+ Kxd8 9. Be2 Ke7 10. Nbd2 Nbd7 11. Nb3 Bd6 12. Na5 Nc5 13. Nc4 Bc7 14. b3 b6 15. Ba3 Bb7 16. Rac1 Rhc8 17. Nfe5 Ke8 18. Bxc5 bxc5 19. Nd3 Nd7 20. Bf3 Bd5 21. Rfd1 Ke7 22. Ndb2 Nf6 23. Na4 Rab8 24. h3 Bxc4 25. Rxc4 Bd6 26. Rdc1 Nd7 27. R4c2 a5 28. Be2 g5 29. Nc3 Nf6 30. Rd1 h6 31. Nb5 Be5 32. Rdc1 Bd6 33. a4 Nd5 34. Kf1 Nb4 35. Rd2 Be5 36. g3 Rd8 37. Rxd8 Rxd8 38. Rxc5 Rd5 39. Rc8 Rd8 40. Rc5 Rd5 41. Rc4 Rd2 42. f4 Bf6 43. Rc7+ Rd7 44. Rxd7+ Kxd7 45. Bh5 gxf4 46. gxf4 Ke7 47. Ke2 Bb2 48. Na7 e5 49. Nc8+ Ke6 50. f5+ Kxf5 51. Nd6+ Ke6 52. Nxf7 Nd5 53. Nd8+ Kd7 54. Nb7 Bc3 55. Nc5+ Ke7 56. Bf3 Nxe3 57. Be4 Bd4 58. Nb7 Bb6 59. Nxa5 Bxa5 60. Kxe3 Kd6 61. Kf3 Kc5 62. Kg4 Bd2 63. Kf5 Kb4 1/2-1/2

[Event "POL-chT 1st League"]
[Site "Darlowo"]
[Date "2024.09.16"]
[Round "3.31"]
[White "Eggink, Ryszard"]
[Black "Sieciechowicz, Marcin"]
[Result "1/2-1/2"]
[ECO "D85"]
[WhiteElo "2392"]
[BlackElo "2419"]
[PlyCount "39"]
[EventDate "2024.09.14"]
[EventType "team-swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2025"]
[Source "ChessBase"]
[SourceDate "2024.10.14"]
[SourceVersion "1"]
[SourceVersionDate "2024.10.14"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Nf3 c5 8. Rb1 0-0 9. Be2 cxd4 10. cxd4 Qa5+ 11. Bd2 Qxa2 12. 0-0 Bg4 13. Bg5 h6 14. Bh4 g5 15. Bg3 b6 16. Ra1 Qb2 17. Rb1 Qa2 18. Ra1 Qb2 19. Rb1 Qa2 20. Ra1 1/2-1/2

[Event "POL-chT 1st League"]
[Site "Darlowo"]
[Date "2024.09.15"]
[Round "2.13"]
[White "Sieciechowicz, Marcin"]
[Black "Mickiewicz, Piotr"]
[Result "1/2-1/2"]
[ECO "E49"]
[WhiteElo "2419"]
[BlackElo "2232"]
[PlyCount "141"]
[EventDate "2024.09.14"]
[EventType "team-swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2025"]
[Source "ChessBase"]
[SourceDate "2024.10.14"]
[SourceVersion "1"]
[SourceVersionDate "2024.10.14"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 d5 5. a3 Bxc3+ 6. bxc3 c5 7. cxd5 exd5 8. Bd3 0-0 9. Ne2 b6 10. 0-0 Ba6 11. Bxa6 Nxa6 12. Qd3 Nb8 13. dxc5 bxc5 14. c4 dxc4 15. Qxc4 Nbd7 16. Bb2 Rb8 17. Bc3 Qb6 18. Rac1 Qb5 19. Qxb5 Rb7 20. Qb6 Rxb6 21. a4 Rb7 22. Rfd1 Rc7 23. f3 Re8 24. e4 h5 25. Nf4 h4 26. Rd6 Ne5 27. Rcd1 Nfd7 28. a5 Rb7 29. a6 Rb3 30. Ne2 Nf6 31. Rd8 Nc6 32. Bxf6 Nxd8 33. Bxd8 h3 34. Bg5 Re6 35. Nf4 Rxa6 36. Nxh3 Ra2 37. Nf2 c4 38. e5 Rbb2 39. Be3 c3 40. Kf1 a5 41. Ne4 c2 42. Rc1 a4 43. Ke2 a3 44. Nc3 Ra1 45. Kd2 Rab1 46. Rxc2 Rxc2+ 47. Kxc2 Rb2+ 48. Kc1 Rxg2 49. Kb1 Rxh2 50. f4 Rb2+ 51. Ka1 Kh7 52. f5 Rc2 53. Bd4 g5 54. Ne4 Kh6 55. Be3 Kh5 56. e6 fxe6 57. fxe6 Kg6 58. e7 Kf7 59. Bxg5 Re2 60. Nd6+ Kg6 61. Bh4 Kh5 62. Bf6 Kg6 63. Bh4 Kh5 64. Nf5 Kg6 65. Nd4 Re4 66. Nb5 Kh5 67. Nd6 Re6 68. Nf5 Kg6 69. Nd4 Re4 70. Nf3 Re2 71. Nd4 1/2-1/2

[Event "POL-chT 1st League"]
[Site "Darlowo"]
[Date "2024.09.14"]
[Round "1.19"]
[White "Niedbala, Bartlomiej"]
[Black "Sieciechowicz, Marcin"]
[Result "1-0"]
[ECO "D85"]
[WhiteElo "2379"]
[BlackElo "2419"]
[PlyCount "61"]
[EventDate "2024.09.14"]
[EventType "team-swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2025"]
[Source "ChessBase"]
[SourceDate "2024.10.14"]
[SourceVersion "1"]
[SourceVersionDate "2024.10.14"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. Bd2 Bg7 6. e4 Nxc3 7. Bxc3 0-0 8. h4 c5 9. d5 e6 10. Bxg7 Kxg7 11. Qd2 exd5 12. exd5 h5 13. 0-0-0 Na6 14. Ne2 Bd7 15. f3 b5 16. g4 hxg4 17. h5 Rh8 18. fxg4 Bxg4 19. h6+ Kh7 20. Qf4 f5 21. Qe5 Qc7 22. d6 Qf7 23. d7 Rhd8 24. Rd6 Nc7 25. Nf4 Rg8 26. Rc6 Qxa2 27. Qe7+ Kh8 28. Bd3 Qa1+ 29. Bb1 Qa4 30. Qe5+ Kh7 31. d8Q 1-0

[Event "Bydgoszcz op"]
[Site "Bydgoszcz"]
[Date "2024.09.03"]
[Round "9"]
[White "Sieciechowicz, Marcin"]
[Black "Teclaf, Pawel"]
[Result "1/2-1/2"]
[ECO "E32"]
[WhiteElo "2424"]
[BlackElo "2553"]
[PlyCount "7"]
[EventDate "2024.08.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2025"]
[Source "ChessBase"]
[SourceDate "2024.10.14"]
[SourceVersion "1"]
[SourceVersionDate "2024.10.14"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 1/2-1/2

[Event "Bydgoszcz op"]
[Site "Bydgoszcz"]
[Date "2024.09.02"]
[Round "8"]
[White "Md, Imran"]
[Black "Sieciechowicz, Marcin"]
[Result "1/2-1/2"]
[ECO "A38"]
[WhiteElo "2225"]
[BlackElo "2424"]
[PlyCount "112"]
[EventDate "2024.08.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2025"]
[Source "ChessBase"]
[SourceDate "2024.10.14"]
[SourceVersion "1"]
[SourceVersionDate "2024.10.14"]
[SourceQuality "1"]

1. Nf3 Nf6 2. b3 g6 3. Bb2 Bg7 4. g3 c5 5. c4 d6 6. Bg2 e5 7. Nc3 Nc6 8. e3 0-0 9. 0-0 Re8 10. d3 Bf5 11. h3 a6 12. Ng5 h6 13. Nge4 Nxe4 14. dxe4 Be6 15. Qd2 Qd7 16. Rad1 Red8 17. Kh2 b5 18. Nd5 Bxd5 19. exd5 Ne7 20. b4 cxb4 21. Qxb4 bxc4 22. Qxc4 Qb5 23. Qxb5 axb5 24. a3 e4 25. Bxg7 Kxg7 26. Ra1 f5 27. Rfb1 Rdb8 28. Bf1 Ra5 29. Rb3 Kf6 30. Rab1 Rba8 31. Ra1 b4 32. Rxb4 Rxa3 33. Rxa3 Rxa3 34. Rb6 Ke5 35. Rb7 Nxd5 36. Bc4 Ra5 37. Rg7 g5 38. Bxd5 Rxd5 39. Rg6 Rd2 40. Kg1 f4 41. gxf4+ gxf4 42. exf4+ Kxf4 43. Rxh6 d5 44. Rf6+ Kg5 45. Re6 Kf5 46. Re8 d4 47. Rf8+ Ke5 48. Kf1 Ra2 49. h4 Ra6 50. Ke2 Rh6 51. Re8+ Kf5 52. f3 e3 53. Re4 Rd6 54. Ke1 Rd8 55. Kd1 Rd7 56. Ke1 Rd8 1/2-1/2

