[Event "POL-chT 2nd League"]
[Site "Jastrzebia Gora"]
[Date "2024.09.08"]
[Round "9.20"]
[White "Karut, Kacper"]
[Black "Siwiec, Arkadiusz"]
[Result "0-1"]
[ECO "B56"]
[WhiteElo "2048"]
[BlackElo "2199"]
[PlyCount "100"]
[EventDate "2024.08.31"]
[EventType "team-swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2025"]
[Source "ChessBase"]
[SourceDate "2024.10.14"]
[SourceVersion "1"]
[SourceVersionDate "2024.10.14"]
[SourceQuality "1"]
[WhiteTeam "Grudziadz Rotmistrz"]
[BlackTeam "Kozuchow Odrodzenie"]
[WhiteTeamCountry "POL"]
[BlackTeamCountry "POL"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Be3 Ng4 7. Bb5 Nxe3 8. fxe3 Bd7 9. 0-0 e6 10. Bxc6 bxc6 11. e5 Be7 12. exd6 Bxd6 13. Nb3 Be7 14. Qh5 0-0 15. Rad1 Qe8 16. Qe5 Bc8 17. Ne4 Ba6 18. Rf2 Qb8 19. Qxb8 Raxb8 20. Rd7 Rfd8 21. Rfd2 Rxd7 22. Rxd7 Rb7 23. Rxb7 Bxb7 24. Nec5 Bc8 25. a4 Kf8 26. a5 Ke8 27. Kf2 Kd8 28. e4 Kc7 29. Ke3 Kd6 30. c3 Bg5+ 31. Kf3 Bd8 32. Nd3 e5 33. Nd2 Ba6 34. c4 Bxa5 35. b4 Bd8 36. Nc5 Bc8 37. Ndb3 a5 38. bxa5 Bxa5 39. Nd3 Bc3 40. c5+ Ke6 41. Ndc1 Ba6 42. g4 Bc4 43. Ke3 Kf6 44. Kf3 Kg5 45. h3 Bf1 46. Ne2 Bb4 47. Kf2 Bxh3 48. Nec1 Bxg4 49. Na2 Ba3 50. Nc3 Be6 0-1

[Event "POL-chT 2nd League"]
[Site "Jastrzebia Gora"]
[Date "2024.09.07"]
[Round "8.8"]
[White "Kempinski, Tomasz"]
[Black "Siwiec, Arkadiusz"]
[Result "0-1"]
[ECO "B57"]
[WhiteElo "2171"]
[BlackElo "2199"]
[PlyCount "80"]
[EventDate "2024.08.31"]
[EventType "team-swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2025"]
[Source "ChessBase"]
[SourceDate "2024.10.14"]
[SourceVersion "1"]
[SourceVersionDate "2024.10.14"]
[SourceQuality "1"]
[WhiteTeam "Zakrzewo Korona"]
[BlackTeam "Kozuchow Odrodzenie"]
[WhiteTeamCountry "POL"]
[BlackTeamCountry "POL"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bc4 Qb6 7. Nb3 e6 8. Bf4 Ne5 9. Be2 a6 10. g4 Qc7 11. g5 Nfd7 12. a4 b6 13. Bg3 Bb7 14. f4 Nc4 15. Qd4 Nxb2 16. 0-0 Rc8 17. Rf3 Nc4 18. Raf1 Na3 19. Qd1 Be7 20. f5 Ne5 21. Bxe5 dxe5 22. fxe6 fxe6 23. Rh3 g6 24. Bg4 Qc6 25. Rd3 Nc4 26. Qf3 Rf8 27. Qh3 Bc5+ 28. Nxc5 Qxc5+ 29. Kh1 Rxf1+ 30. Qxf1 Qe7 31. Qf6 Qxf6 32. gxf6 Rc6 33. f7+ Kxf7 34. Rd7+ Kf6 35. Rxb7 Ne3 36. h3 Nxg4 37. Nd5+ exd5 38. exd5 Nf2+ 39. Kg2 Rxc2 40. Rxb6+ Kf5 0-1

[Event "POL-chT 2nd League"]
[Site "Jastrzebia Gora"]
[Date "2024.09.06"]
[Round "7.14"]
[White "Siwiec, Arkadiusz"]
[Black "Korbal, Arkadiusz"]
[Result "1-0"]
[ECO "B37"]
[WhiteElo "2199"]
[BlackElo "2073"]
[PlyCount "117"]
[EventDate "2024.08.31"]
[EventType "team-swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2025"]
[Source "ChessBase"]
[SourceDate "2024.10.14"]
[SourceVersion "1"]
[SourceVersionDate "2024.10.14"]
[SourceQuality "1"]
[WhiteTeam "Kozuchow Odrodzenie"]
[BlackTeam "Szczecin Gryf"]
[WhiteTeamCountry "POL"]
[BlackTeamCountry "POL"]

1. Nf3 c5 2. c4 Nc6 3. d4 cxd4 4. Nxd4 g6 5. e4 Bg7 6. Nc2 Qa5+ 7. Bd2 Qc7 8. Bc3 Nf6 9. g3 Ne5 10. Nd2 d6 11. h3 0-0 12. f4 Nc6 13. Qf3 Be6 14. Be2 Na5 15. Ne3 Bd7 16. g4 e6 17. g5 Nh5 18. Bxg7 Nxg7 19. Ng4 f5 20. Nf6+ Rxf6 21. gxf6 Nh5 22. Qe3 Nxf6 23. e5 Ne8 24. h4 Ng7 25. h5 dxe5 26. fxe5 Nc6 27. Nf3 Qa5+ 28. Kf1 f4 29. Qd2 Qxd2 30. Nxd2 Nxe5 31. hxg6 hxg6 32. Rg1 Bc6 33. Kf2 Kf7 34. Nf3 Nxf3 35. Bxf3 Rc8 36. Rg4 e5 37. Rag1 Bxf3 38. Kxf3 Rc6 39. Ke4 Re6 40. b4 Ne8 41. Rg5 Nd6+ 42. Kd5 e4 43. Re5 Rf6 44. c5 Nb5 45. Kxe4 Nc3+ 46. Kf3 Nxa2 47. Re4 Nc3 48. Rc4 Nd5 49. Rd4 Rf5 50. Rc1 g5 51. b5 Ke6 52. c6 bxc6 53. bxc6 Rf8 54. Rc5 Nb6 55. c7 g4+ 56. Kxg4 f3 57. Rd8 Rf7 58. Rc6+ Ke5 59. Rxb6 1-0

[Event "POL-chT 2nd League"]
[Site "Jastrzebia Gora"]
[Date "2024.09.05"]
[Round "6.2"]
[White "Siwiec, Arkadiusz"]
[Black "Sliwicki, Damian"]
[Result "1/2-1/2"]
[ECO "A57"]
[WhiteElo "2199"]
[BlackElo "2153"]
[PlyCount "10"]
[EventDate "2024.08.31"]
[EventType "team-swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2025"]
[Source "ChessBase"]
[SourceDate "2024.10.14"]
[SourceVersion "1"]
[SourceVersionDate "2024.10.14"]
[SourceQuality "1"]
[WhiteTeam "Kozuchow Odrodzenie"]
[BlackTeam "Torun UKS OPP"]
[WhiteTeamCountry "POL"]
[BlackTeamCountry "POL"]

1. d4 Nf6 2. Nf3 c5 3. d5 b5 4. c4 Bb7 5. Qc2 bxc4 1/2-1/2

[Event "POL-chT 2nd League"]
[Site "Jastrzebia Gora"]
[Date "2024.09.04"]
[Round "5.2"]
[White "Backiel, Hubert"]
[Black "Siwiec, Arkadiusz"]
[Result "1/2-1/2"]
[ECO "B90"]
[WhiteElo "2216"]
[BlackElo "2199"]
[PlyCount "148"]
[EventDate "2024.08.31"]
[EventType "team-swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2025"]
[Source "ChessBase"]
[SourceDate "2024.10.14"]
[SourceVersion "1"]
[SourceVersionDate "2024.10.14"]
[SourceQuality "1"]
[WhiteTeam "Bialystok Stoczek 45"]
[BlackTeam "Kozuchow Odrodzenie"]
[WhiteTeamCountry "POL"]
[BlackTeamCountry "POL"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 Ng4 7. Bc1 Nf6 8. f3 e5 9. Nb3 Be6 10. Be3 h5 11. Nd5 Nxd5 12. exd5 Bf5 13. Bd3 Bxd3 14. Qxd3 Be7 15. 0-0 Nd7 16. Qd2 Qc7 17. c4 a5 18. Rac1 a4 19. Na1 Qa5 20. Qe2 Bd8 21. Kh1 Bb6 22. Bd2 Qa7 23. Nc2 Ba5 24. Be3 Bb6 25. f4 Bxe3 26. Nxe3 g6 27. c5 Nxc5 28. Qb5+ Nd7 29. Nc4 Qa6 30. Qxa6 bxa6 31. Nxd6+ Ke7 32. fxe5 Nxe5 33. Nxf7 Nxf7 34. Rc7+ Kd6 35. Rfxf7 Kxd5 36. h4 Rab8 37. Rfd7+ Ke5 38. Rc5+ Ke4 39. Rc4+ Kf5 40. Rxa4 Rxb2 41. Rd5+ Ke6 42. Rg5 Kf7 43. Rxa6 Rb4 44. Rgxg6 Rxh4+ 45. Kg1 Ra4 46. Rgf6+ Kg7 47. Rxa4 Kxf6 48. Ra6+ Kg5 49. Kh2 Rc8 50. a4 Rc3 51. a5 Ra3 52. Ra8 Kg6 53. g3 Ra4 54. Kh3 Kg5 55. a6 Kg6 56. Kg2 Ra3 57. Kf2 Kg7 58. Ra7+ Kg6 59. Ra8 Kg7 60. Kg2 Kh7 61. Kh3 Ra4 62. Ra7+ Kg6 63. Kg2 Ra3 64. Kf2 Kh6 65. Ra8 Kg7 66. a7 Kh7 67. Ke2 Kg7 68. Kd2 h4 69. gxh4 Kh7 70. Kc2 Ra2+ 71. Kb3 Ra1 72. h5 Ra6 73. h6 Ra1 74. Kc4 Rc1+ 1/2-1/2

[Event "POL-chT 2nd League"]
[Site "Jastrzebia Gora"]
[Date "2024.09.03"]
[Round "4.2"]
[White "Grzesik, Gracjan"]
[Black "Siwiec, Arkadiusz"]
[Result "0-1"]
[ECO "B50"]
[WhiteElo "2184"]
[BlackElo "2199"]
[PlyCount "166"]
[EventDate "2024.08.31"]
[EventType "team-swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2025"]
[Source "ChessBase"]
[SourceDate "2024.10.14"]
[SourceVersion "1"]
[SourceVersionDate "2024.10.14"]
[SourceQuality "1"]
[WhiteTeam "Koszalin Hetman Politechnika"]
[BlackTeam "Kozuchow Odrodzenie"]
[WhiteTeamCountry "POL"]
[BlackTeamCountry "POL"]

1. e4 c5 2. Nf3 d6 3. c3 Nf6 4. Be2 Nbd7 5. Qc2 g6 6. d4 Qc7 7. c4 a6 8. Nc3 Bg7 9. 0-0 0-0 10. h3 b6 11. Be3 Bb7 12. Rac1 Rac8 13. Rfd1 Qb8 14. Qb1 Qa8 15. e5 Ne8 16. exd6 Nxd6 17. dxc5 bxc5 18. Nd5 Nf5 19. Bf4 e5 20. Bg5 f6 21. Bd2 Rfe8 22. Bd3 Nd4 23. Be3 f5 24. Bf1 a5 25. b3 Qb8 26. Bg5 Qd6 27. a3 Nb6 28. Nd2 Nxd5 29. cxd5 Bxd5 30. Nc4 Qc7 31. Bd2 Ra8 32. Bc3 Bf7 33. Re1 e4 34. Nd2 Reb8 35. Bxd4 Bxd4 36. Bc4 Qf4 37. Bxf7+ Kxf7 38. Re2 e3 39. Nf3 exf2+ 40. Kf1 Rc8 41. Rd1 Rd8 42. Qc2 Be3 43. Rd3 Rxd3 44. Qxd3 Re8 45. Qd5+ Kf8 46. Qd1 h6 47. Qd5 Qe4 48. Qxe4 Rxe4 49. Nd2 Re7 50. g3 g5 51. Kg2 f4 52. Nf1 Kf7 53. Kf3 Kf6 54. Kg2 Kf5 55. Kf3 h5 56. gxf4 gxf4 57. Rc2 Rg7 58. Rc4 Rg1 59. Ke2 Bd4 60. Rc1 Ke4 61. Nd2+ Kd5 62. Nf1 Be3 63. Rc4 Rh1 64. h4 Bd4 65. Rc1 Rxh4 66. Rb1 Rg4 67. Rd1 Rg1 68. Rd3 Ke4 69. Nd2+ Kf5 70. Nf1 Be3 71. Rd8 Ke4 72. Re8+ Kd4 73. Rd8+ Kc3 74. Rb8 Bd4 75. Rf8 Be3 76. Rb8 h4 77. Rh8 Bd4 78. Rf8 Be3 79. Rh8 Kxb3 80. a4 c4 81. Rxh4 c3 82. Rh8 c2 83. Rb8+ Kxa4 0-1

[Event "POL-chT 2nd League"]
[Site "Jastrzebia Gora"]
[Date "2024.09.02"]
[Round "3.8"]
[White "Siwiec, Arkadiusz"]
[Black "Steczek, Marcin"]
[Result "0-1"]
[ECO "B12"]
[WhiteElo "2199"]
[BlackElo "2326"]
[PlyCount "71"]
[EventDate "2024.08.31"]
[EventType "team-swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2025"]
[Source "ChessBase"]
[SourceDate "2024.10.14"]
[SourceVersion "1"]
[SourceVersionDate "2024.10.14"]
[SourceQuality "1"]
[WhiteTeam "Kozuchow Odrodzenie"]
[BlackTeam "Konin Hetman TS"]
[WhiteTeamCountry "POL"]
[BlackTeamCountry "POL"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nf3 e6 5. Be2 Nd7 6. 0-0 h6 7. Nbd2 Ne7 8. Nb3 a5 9. a4 Bg6 10. Bd2 Nf5 11. g4 Ne7 12. Rc1 h5 13. h3 hxg4 14. hxg4 Be4 15. Bg5 f6 16. exf6 gxf6 17. Bf4 Ng6 18. Bh2 Bxf3 19. Bxf3 Rxh2 20. Kxh2 Bd6+ 21. Kg1 Ke7 22. Re1 Qh8 23. Kf1 Nf4 24. Re3 Qh2 25. Ke1 Qg1+ 26. Kd2 Qxf2+ 27. Be2 Nb6 28. Nxa5 Rxa5 29. b3 Ng2 30. Rf3 Qxd4+ 31. Bd3 Bf4+ 32. Ke2 Bg5 33. Rb1 Nh4 34. Rg3 Qe5+ 35. Kf2 Qf4+ 36. Rf3 0-1

[Event "POL-chT 2nd League"]
[Site "Jastrzebia Gora"]
[Date "2024.09.01"]
[Round "2.26"]
[White "Nagly, Wojciech"]
[Black "Siwiec, Arkadiusz"]
[Result "1/2-1/2"]
[ECO "A37"]
[WhiteElo "2133"]
[BlackElo "2199"]
[PlyCount "100"]
[EventDate "2024.08.31"]
[EventType "team-swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2025"]
[Source "ChessBase"]
[SourceDate "2024.10.14"]
[SourceVersion "1"]
[SourceVersionDate "2024.10.14"]
[SourceQuality "1"]
[WhiteTeam "Wroclaw Srodmiescie"]
[BlackTeam "Kozuchow Odrodzenie"]
[WhiteTeamCountry "POL"]
[BlackTeamCountry "POL"]

1. Nf3 c5 2. g3 Nc6 3. Bg2 g6 4. 0-0 Bg7 5. c4 e6 6. Nc3 Nge7 7. e3 0-0 8. a3 d5 9. cxd5 Nxd5 10. d4 cxd4 11. Nxd5 exd5 12. Nxd4 Nxd4 13. exd4 Be6 14. Be3 Qb6 15. Qd2 Rfc8 16. Rac1 h5 17. b4 Rxc1 18. Rxc1 a5 19. Rb1 Bf8 20. h4 axb4 21. axb4 Ra4 22. b5 Bg7 23. Rb4 Ra1+ 24. Kh2 Qa5 25. Qb2 Bf8 26. Rb3 Qe1 27. f4 Qa5 28. Qe2 Qd8 29. Rb2 Qd7 30. b6 Ra4 31. Qf3 Ra3 32. Qe2 Bg4 33. Qd2 Qc6 34. Bf2 Bf3 35. Bxf3 Rxf3 36. Qe2 Ra3 37. f5 Qf6 38. fxg6 fxg6 39. Qe5 Qxe5 40. dxe5 Kf7 41. Rc2 Ke6 42. Rc7 Ra2 43. Kg1 Ra1+ 44. Kg2 Ra2 45. Kf1 Ra1+ 46. Ke2 Ra2+ 47. Kf1 Ra1+ 48. Kg2 Ra2 49. Kf1 Ra1+ 50. Kg2 Kxe5 1/2-1/2

[Event "Wroclaw Anderssen Memorial op"]
[Site "Wroclaw"]
[Date "2024.08.15"]
[Round "2"]
[White "Bednarczyk, Mateusz"]
[Black "Siwiec, Arkadiusz"]
[Result "1/2-1/2"]
[ECO "B62"]
[WhiteElo "1910"]
[BlackElo "2199"]
[PlyCount "134"]
[EventDate "2024.08.15"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 221 Extra"]
[Source "ChessBase"]
[SourceDate "2024.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2024.09.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Bb5 Bd7 8. Bxc6 bxc6 9. Qf3 Qb6 10. Nb3 Be7 11. Rd1 Qc7 12. 0-0 0-0 13. e5 dxe5 14. Bxf6 Bxf6 15. Ne4 Be7 16. Rfe1 Rad8 17. Nec5 Bc8 18. Nd3 f6 19. Nbc5 Rd5 20. b4 a5 21. a3 Rfd8 22. Qg4 f5 23. Qe2 e4 24. Nb2 axb4 25. axb4 Bxc5 26. bxc5 Rxc5 27. Rxd8+ Qxd8 28. Na4 Rd5 29. c4 Rd2 30. Qe3 Qd4 31. Qxd4 Rxd4 32. g3 Ba6 33. Rb1 Bxc4 34. Nb6 Be2 35. Nc8 Kf7 36. Na7 c5 37. Nc6 Rd1+ 38. Rxd1 Bxd1 39. Ne5+ Ke7 40. Kf1 Bf3 41. Ke1 Kd6 42. Nc4+ Kd5 43. Ne3+ Kc6 44. Kd2 Kb5 45. Kc3 g6 46. h4 h6 47. Nc2 g5 48. hxg5 hxg5 49. Na3+ Kc6 50. Nc4 Kd5 51. Nb6+ Kc6 52. Nc4 Be2 53. Ne5+ Kd5 54. Nf7 g4 55. Nd8 Ba6 56. Nf7 Bb5 57. Nd8 Ba6 58. Nf7 e5 59. Nh6 Bc8 60. Nf7 f4 61. Ng5 Bf5 62. Nf7 Ke6 63. Nd8+ Kd6 64. Nf7+ Ke6 65. Nd8+ Kd5 66. Nb7 e3 67. fxe3 fxg3 1/2-1/2

[Event "Wroclaw Anderssen Memorial op"]
[Site "Wroclaw"]
[Date "2024.08.15"]
[Round "4"]
[White "Kucza, Karol"]
[Black "Siwiec, Arkadiusz"]
[Result "1-0"]
[ECO "B65"]
[WhiteElo "2360"]
[BlackElo "2199"]
[PlyCount "69"]
[EventDate "2024.08.15"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 221 Extra"]
[Source "ChessBase"]
[SourceDate "2024.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2024.09.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Qd2 Be7 8. 0-0-0 0-0 9. f4 Nxd4 10. Qxd4 Qa5 11. Bc4 Bd7 12. Bb3 Bc6 13. Rhe1 Rfd8 14. Kb1 b5 15. a3 Qc7 16. f5 h6 17. Bh4 e5 18. Qg1 b4 19. axb4 a5 20. b5 Bb7 21. Bxf6 Bxf6 22. Bd5 Rab8 23. Rd3 Rdc8 24. Qa7 Bd8 25. Red1 Be7 26. b6 Qd7 27. Bxb7 Rxb7 28. Qxa5 Qd8 29. Nd5 Bf8 30. Rc3 Ra8 31. Qb5 Qh4 32. Rc7 Rbb8 33. Qd7 Qxe4 34. Qxf7+ Kh8 35. Nf6 1-0

[Event "Wroclaw Anderssen Memorial op"]
[Site "Wroclaw"]
[Date "2024.08.15"]
[Round "6"]
[White "Lasok, Marek"]
[Black "Siwiec, Arkadiusz"]
[Result "1-0"]
[ECO "B65"]
[WhiteElo "1968"]
[BlackElo "2199"]
[PlyCount "49"]
[EventDate "2024.08.15"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 221 Extra"]
[Source "ChessBase"]
[SourceDate "2024.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2024.09.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Qd2 Be7 8. f4 0-0 9. 0-0-0 Nxd4 10. Qxd4 Qa5 11. Kb1 h6 12. Bh4 e5 13. fxe5 dxe5 14. Qf2 Ng4 15. Qe1 Bxh4 16. Qxh4 Be6 17. h3 Ne3 18. Rd3 Nxf1 19. Rxf1 Bc4 20. Rg3 Kh7 21. Rxg7+ Kxg7 22. Qf6+ Kg8 23. Rf3 Rfc8 24. Rg3+ Kf8 25. Qd6+ 1-0

[Event "Wroclaw Anderssen Memorial op"]
[Site "Wroclaw"]
[Date "2024.08.15"]
[Round "8"]
[White "Lechowski, Witold"]
[Black "Siwiec, Arkadiusz"]
[Result "1-0"]
[ECO "E18"]
[WhiteElo "1999"]
[BlackElo "2199"]
[PlyCount "67"]
[EventDate "2024.08.15"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 221 Extra"]
[Source "ChessBase"]
[SourceDate "2024.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2024.09.30"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 Be7 5. Bg2 0-0 6. 0-0 b6 7. cxd5 exd5 8. Nc3 Bb7 9. Qb3 Re8 10. Bf4 Nbd7 11. Ne5 Nf8 12. e4 c6 13. Nxc6 Bxc6 14. exd5 Bb7 15. d6 Bxg2 16. dxe7 Rxe7 17. Kxg2 Qxd4 18. Rad1 Qc5 19. Bd6 Qc6+ 20. Kg1 Re6 21. Bxf8 Rxf8 22. Nb5 Re7 23. Nd4 Qc5 24. Qf3 Rc7 25. Nf5 Qe5 26. Rd2 Re8 27. Nd6 Rf8 28. b3 h6 29. Nc4 Qg5 30. h4 Qc5 31. Ne3 Re8 32. Nf5 Ne4 33. Re2 Rcc8 34. Rxe4 1-0

[Event "Wroclaw Anderssen Memorial op"]
[Site "Wroclaw"]
[Date "2024.08.15"]
[Round "5"]
[White "Siwiec, Arkadiusz"]
[Black "Aishwin, Daniel"]
[Result "1/2-1/2"]
[ECO "C18"]
[WhiteElo "2199"]
[BlackElo "2234"]
[PlyCount "44"]
[EventDate "2024.08.15"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 221 Extra"]
[Source "ChessBase"]
[SourceDate "2024.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2024.09.30"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 Ne7 5. a3 Bxc3+ 6. bxc3 c5 7. Qg4 Qc7 8. Qxg7 Rg8 9. Qxh7 cxd4 10. Ne2 dxc3 11. f4 Nbc6 12. Qd3 d4 13. Nxd4 Nxd4 14. Qxd4 Bd7 15. a4 Nf5 16. Qf2 Qc6 17. Rg1 Qe4+ 18. Qe2 Qd4 19. Qf2 Qe4+ 20. Qe2 Qd4 21. Qf2 Qe4+ 22. Qe2 Qd4 1/2-1/2

[Event "Wroclaw Anderssen Memorial op"]
[Site "Wroclaw"]
[Date "2024.08.15"]
[Round "9"]
[White "Siwiec, Arkadiusz"]
[Black "Grossmann, Ryszard"]
[Result "0-1"]
[ECO "B86"]
[WhiteElo "2199"]
[BlackElo "1932"]
[PlyCount "80"]
[EventDate "2024.08.15"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 221 Extra"]
[Source "ChessBase"]
[SourceDate "2024.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2024.09.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. Nc3 a6 4. d4 cxd4 5. Nxd4 d6 6. Be3 Nf6 7. Bc4 Qc7 8. Bb3 Nbd7 9. Qe2 Nb6 10. g4 Nfd7 11. a3 Ne5 12. f4 Nec4 13. Bc1 Bd7 14. a4 Na5 15. Ba2 Rc8 16. Bb3 Nxb3 17. cxb3 Bc6 18. Be3 Nd7 19. Bf2 Nf6 20. g5 Nd7 21. 0-0 Be7 22. Be3 0-0 23. Rae1 Rfe8 24. Qg4 Bf8 25. Rf3 e5 26. Nf5 exf4 27. Rxf4 Ne5 28. Qd1 b5 29. axb5 axb5 30. Bd4 b4 31. Nd5 Bxd5 32. exd5 Qd8 33. h4 Qd7 34. Ref1 Rc7 35. Ne3 Qh3 36. Qd2 Ng6 37. R1f3 Qc8 38. Rg4 Ne5 39. Bxe5 Rxe5 40. Nc4 Qxg4+ 0-1

[Event "Wroclaw Anderssen Memorial op"]
[Site "Wroclaw"]
[Date "2024.08.15"]
[Round "3"]
[White "Siwiec, Arkadiusz"]
[Black "Misiek, Stanislaw"]
[Result "1-0"]
[ECO "C78"]
[WhiteElo "2199"]
[BlackElo "1834"]
[PlyCount "79"]
[EventDate "2024.08.15"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 221 Extra"]
[Source "ChessBase"]
[SourceDate "2024.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2024.09.30"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 b5 6. Bb3 Bc5 7. c3 d6 8. d4 Bb6 9. h3 Bb7 10. Re1 0-0 11. a4 Re8 12. d5 Ne7 13. Bg5 Ng6 14. axb5 axb5 15. Rxa8 Bxa8 16. Na3 c6 17. g3 h6 18. Bxf6 Qxf6 19. Kg2 Bc5 20. Nc2 Bb7 21. dxc6 Bxc6 22. Bd5 Bd7 23. Ne3 Ne7 24. Bb3 Qg6 25. Nd5 Qh5 26. Nxe7+ Rxe7 27. Rh1 Be6 28. Bxe6 fxe6 29. Qb3 Rf7 30. Qd1 d5 31. Re1 Qg6 32. Qe2 Qf6 33. Rf1 d4 34. Ne1 Rb7 35. Nd3 Bd6 36. f4 exf4 37. e5 Qg6 38. Nxf4 d3 39. Qe3 d2 40. Nxg6 1-0

[Event "Wroclaw Anderssen Memorial op"]
[Site "Wroclaw"]
[Date "2024.08.15"]
[Round "7"]
[White "Siwiec, Arkadiusz"]
[Black "Skrzyczek, Tomasz"]
[Result "1-0"]
[ECO "B70"]
[WhiteElo "2199"]
[BlackElo "1884"]
[PlyCount "53"]
[EventDate "2024.08.15"]
[EventType "swiss (blitz)"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 221 Extra"]
[Source "ChessBase"]
[SourceDate "2024.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2024.09.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Nde2 d6 7. g3 Nf6 8. Bg2 0-0 9. 0-0 Bd7 10. h3 Rc8 11. Be3 Na5 12. b3 b5 13. Rc1 b4 14. Nd5 Nc6 15. c4 Ne8 16. Qd2 e6 17. Nxb4 Nxb4 18. Qxb4 Bc6 19. Rfd1 Qc7 20. Nd4 a5 21. Qa3 Ba8 22. Nb5 Qb7 23. Qxa5 f5 24. Nxd6 Nxd6 25. Rxd6 Kh8 26. Rcd1 e5 27. Rd7 1-0

[Event "POL-chT 2nd League"]
[Site "Jastrzebia Gora"]
[Date "2023.09.10"]
[Round "9.109"]
[White "Gierulski, Kamil"]
[Black "Siwiec, Arkadiusz"]
[Result "0-1"]
[ECO "E06"]
[WhiteElo "2256"]
[BlackElo "2211"]
[PlyCount "94"]
[EventDate "2023.09.02"]
[EventType "team-swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 216 Extra"]
[Source "ChessBase"]
[SourceDate "2023.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.30"]
[SourceQuality "1"]
[WhiteTeam "Rzeszow RzKSz"]
[BlackTeam "Bogatynia UKS SP3"]
[WhiteTeamCountry "POL"]
[BlackTeamCountry "POL"]

1. Nf3 d5 2. c4 e6 3. g3 Nf6 4. Bg2 c5 5. cxd5 Nxd5 6. Nc3 Be7 7. 0-0 0-0 8. d4 Nc7 9. Bf4 Nba6 10. Rc1 f6 11. dxc5 e5 12. Be3 Bxc5 13. Bxc5 Nxc5 14. b4 N5e6 15. Nh4 g6 16. Qb3 Kh8 17. e3 Rb8 18. b5 b6 19. Qa3 a5 20. Rfd1 Qe8 21. Bc6 Qf7 22. Ne4 Ng7 23. Nd6 Qe7 24. Be4 g5 25. Nf3 Bg4 26. Bc6 Rfd8 27. Rd2 Nge8 28. Rcd1 Nxd6 29. Rxd6 Rxd6 30. Qxd6 Qxd6 31. Rxd6 Bxf3 32. Bxf3 Nxb5 33. Rxf6 Nc3 34. a3 b5 35. Rc6 Nb1 36. a4 b4 37. Be4 Nd2 38. Bf5 b3 39. Rd6 Nc4 40. Bb1 b2 41. Rd1 Rb4 42. Kg2 Rxa4 43. Rd8+ Kg7 44. Rd7+ Kf6 45. Bxh7 Rb4 46. Rc7 e4 47. Bxe4 Nxe3+ 0-1

[Event "POL-chT 2nd League"]
[Site "Jastrzebia Gora"]
[Date "2023.09.09"]
[Round "8.103"]
[White "Siwiec, Arkadiusz"]
[Black "Mrozowski, Patryk"]
[Result "1-0"]
[ECO "B43"]
[WhiteElo "2211"]
[BlackElo "2118"]
[PlyCount "133"]
[EventDate "2023.09.02"]
[EventType "team-swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 216 Extra"]
[Source "ChessBase"]
[SourceDate "2023.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.30"]
[SourceQuality "1"]
[WhiteTeam "Bogatynia UKS SP3"]
[BlackTeam "Torun UMK"]
[WhiteTeamCountry "POL"]
[BlackTeamCountry "POL"]

1. e4 c5 2. Nf3 e6 3. Nc3 a6 4. d4 cxd4 5. Nxd4 Qc7 6. Qf3 Nc6 7. Be3 Nf6 8. 0-0-0 d6 9. Qg3 Nxd4 10. Bxd4 e5 11. Be3 b5 12. a3 Bb7 13. f3 Rc8 14. Qf2 Be7 15. g4 Nd7 16. h4 Nc5 17. g5 Bc6 18. h5 Qb7 19. Rg1 b4 20. axb4 Qxb4 21. Bxc5 dxc5 22. Nd5 Bxd5 23. Rxd5 Qa5 24. Kb1 Rb8 25. Qd2 Qxd2 26. Rxd2 Rb6 27. Rd5 Bd6 28. Bc4 Ke7 29. b3 Rc6 30. Kb2 Rd8 31. Ra1 Bc7 32. Bxa6 Rxd5 33. exd5 Rb6 34. Bc4 h6 35. Ra7 Kd8 36. gxh6 Rxh6 37. d6 Rxd6 38. Bxf7 Rf6 39. Bd5 Rh6 40. Kc3 Rxh5 41. Kc4 Bd6 42. Be6 Bc7 43. Bg4 Rg5 44. Ra8+ Ke7 45. Kxc5 e4+ 46. Kc6 Be5 47. Ra4 exf3 48. Bxf3 Rg3 49. Be4 Rc3+ 50. Kd5 Bf4 51. Ra7+ Kf6 52. Ra6+ Ke7 53. Re6+ Kd7 54. Rg6 Bh6 55. b4 Kc7 56. Kd4 Ra3 57. c4 Rb3 58. b5 Be3+ 59. Kd5 Bh6 60. Rc6+ Kb7 61. Re6 Bg5 62. c5 Rb4 63. Kd6+ Ka7 64. Re8 Rd4+ 65. Kc6 Rd8 66. b6+ Kb8 67. Rxd8+ 1-0

[Event "POL-chT 2nd League"]
[Site "Jastrzebia Gora"]
[Date "2023.09.08"]
[Round "7.79"]
[White "Bebel, Arkadiusz"]
[Black "Siwiec, Arkadiusz"]
[Result "1/2-1/2"]
[ECO "E04"]
[WhiteElo "2250"]
[BlackElo "2211"]
[PlyCount "67"]
[EventDate "2023.09.02"]
[EventType "team-swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 216 Extra"]
[Source "ChessBase"]
[SourceDate "2023.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.30"]
[SourceQuality "1"]
[WhiteTeam "Warszawa Mogalo"]
[BlackTeam "Bogatynia UKS SP3"]
[WhiteTeamCountry "POL"]
[BlackTeamCountry "POL"]

1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 e6 5. 0-0 Nf6 6. c4 dxc4 7. dxc5 Qxd1 8. Rxd1 Bxc5 9. Nbd2 Ke7 10. Nxc4 Ne4 11. e3 Nd6 12. Nce5 Nxe5 13. Nxe5 Rd8 14. Bd2 a5 15. Rac1 Bb6 16. b4 f6 17. Nd3 Ke8 18. Nc5 axb4 19. Bxb4 Rxa2 20. Nd7 Rxd7 21. Bxd6 Rd8 22. Rb1 Ba7 23. Bxb7 Kf7 24. Bf3 Ra6 25. Bc7 Rxd1+ 26. Rxd1 Bc5 27. Rd8 Ra1+ 28. Kg2 Ba6 29. Rd7+ Be7 30. h4 Bc8 31. Rd2 Rc1 32. Ba5 Ra1 33. Bd8 Rc1 34. Bxe7 1/2-1/2

[Event "POL-chT 2nd League"]
[Site "Jastrzebia Gora"]
[Date "2023.09.07"]
[Round "6.91"]
[White "Siwiec, Arkadiusz"]
[Black "Kutowski, Marcel"]
[Result "0-1"]
[ECO "E37"]
[WhiteElo "2211"]
[BlackElo "2170"]
[PlyCount "80"]
[EventDate "2023.09.02"]
[EventType "team-swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 216 Extra"]
[Source "ChessBase"]
[SourceDate "2023.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.30"]
[SourceQuality "1"]
[WhiteTeam "Bogatynia UKS SP3"]
[BlackTeam "Chrzanow Olimpijczyk"]
[WhiteTeamCountry "POL"]
[BlackTeamCountry "POL"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 0-0 5. Nf3 d5 6. a3 Bxc3+ 7. Qxc3 Ne4 8. Qc2 Nd7 9. e3 b6 10. cxd5 exd5 11. Qc6 Rb8 12. Qxd5 Bb7 13. Qf5 Re8 14. Bb5 Re6 15. Bxd7 Qxd7 16. 0-0 Qe8 17. Ne5 Rd8 18. f3 f6 19. Ng4 Rd5 20. Qf4 Nd6 21. b3 h5 22. Nf2 Rf5 23. Qh4 Qg6 24. d5 Rxd5 25. e4 Rb5 26. Nd3 Qe8 27. b4 Nxe4 28. fxe4 Rxe4 29. Re1 Rbe5 30. Bf4 g5 31. Qg3 h4 32. Qf2 Rxe1+ 33. Nxe1 Re2 34. Qf1 gxf4 35. h3 Qe3+ 36. Kh2 Qg3+ 37. Kg1 Qe3+ 38. Kh2 f3 39. Rd1 Qe5+ 40. Kg1 f2+ 0-1

[Event "POL-chT 2nd League"]
[Site "Jastrzebia Gora"]
[Date "2023.09.06"]
[Round "5.73"]
[White "Luba, Lukasz"]
[Black "Siwiec, Arkadiusz"]
[Result "1/2-1/2"]
[ECO "A50"]
[WhiteElo "2054"]
[BlackElo "2211"]
[PlyCount "36"]
[EventDate "2023.09.02"]
[EventType "team-swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 216 Extra"]
[Source "ChessBase"]
[SourceDate "2023.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.30"]
[SourceQuality "1"]
[WhiteTeam "Radkow Giecek"]
[BlackTeam "Bogatynia UKS SP3"]
[WhiteTeamCountry "POL"]
[BlackTeamCountry "POL"]

1. d4 Nf6 2. c4 Nc6 3. Nc3 e5 4. d5 Ne7 5. e4 Ng6 6. g3 Bb4 7. Qc2 Bxc3+ 8. bxc3 d6 9. h4 h6 10. Be2 Nd7 11. h5 Ne7 12. g4 Nc5 13. Be3 b6 14. f3 Qd7 15. Nh3 Qa4 16. Qb2 Ng8 17. Nf2 Nf6 18. Kd2 Nfd7 1/2-1/2

[Event "POL-chT 2nd League"]
[Site "Jastrzebia Gora"]
[Date "2023.09.05"]
[Round "4.85"]
[White "Siwiec, Arkadiusz"]
[Black "Balinski, Damian"]
[Result "0-1"]
[ECO "D15"]
[WhiteElo "2211"]
[BlackElo "2196"]
[PlyCount "66"]
[EventDate "2023.09.02"]
[EventType "team-swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 216 Extra"]
[Source "ChessBase"]
[SourceDate "2023.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.30"]
[SourceQuality "1"]
[WhiteTeam "Bogatynia UKS SP3"]
[BlackTeam "Olesnica Pogon"]
[WhiteTeamCountry "POL"]
[BlackTeamCountry "POL"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 a6 5. a4 Bf5 6. Qb3 Ra7 7. a5 dxc4 8. Qxc4 e6 9. Nd2 Be7 10. e4 Bg6 11. Be2 Nbd7 12. f3 0-0 13. Nb3 Ne8 14. Be3 Nd6 15. Qa4 Ra8 16. Nc5 Nxc5 17. dxc5 Nb5 18. Nb1 Bf6 19. Ra2 Bd4 20. Bxd4 Nxd4 21. Nd2 e5 22. Nf1 Qg5 23. g3 Qc1+ 24. Kf2 Qxc5 25. Ne3 Kh8 26. Qc4 Qe7 27. Ra3 f5 28. exf5 Bxf5 29. Rc1 Be4 30. Ng2 Bd5 31. Qc5 Qg5 32. Qc3 Bxf3 33. Qc5 Bd5+ 0-1

[Event "POL-chT 2nd League"]
[Site "Jastrzebia Gora"]
[Date "2023.09.04"]
[Round "3.79"]
[White "Banasik, Krzysztof"]
[Black "Siwiec, Arkadiusz"]
[Result "1/2-1/2"]
[ECO "B50"]
[WhiteElo "2211"]
[BlackElo "2211"]
[PlyCount "77"]
[EventDate "2023.09.02"]
[EventType "team-swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 216 Extra"]
[Source "ChessBase"]
[SourceDate "2023.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.30"]
[SourceQuality "1"]
[WhiteTeam "Nysa Gekon"]
[BlackTeam "Bogatynia UKS SP3"]
[WhiteTeamCountry "POL"]
[BlackTeamCountry "POL"]

1. e4 c5 2. Nf3 d6 3. Bc4 Nf6 4. d3 Nc6 5. 0-0 e6 6. Nbd2 Be7 7. Re1 0-0 8. c3 Qc7 9. Nf1 d5 10. Bb3 d4 11. e5 Nd7 12. Bf4 Rd8 13. h4 Nf8 14. h5 h6 15. c4 f5 16. N1h2 Bd7 17. g4 Be8 18. Nd2 Bg5 19. Bxg5 hxg5 20. Qe2 g6 21. h6 Qh7 22. Kg2 Qxh6 23. Rh1 Qg7 24. Ndf3 Nh7 25. Rae1 Nb8 26. Qd1 Bd7 27. Ba4 Bc8 28. Qd2 f4 29. Nf1 b6 30. Qe2 Bb7 31. N1d2 Nc6 32. Bxc6 Bxc6 33. Ne4 Qe7 34. Rh6 Kg7 35. Reh1 Rh8 36. R1h3 Rag8 37. Kg1 Bxe4 38. Qxe4 Nf8 39. Rxh8 1/2-1/2

[Event "POL-chT 2nd League"]
[Site "Jastrzebia Gora"]
[Date "2023.09.03"]
[Round "2.25"]
[White "Siwiec, Arkadiusz"]
[Black "Mickiewicz, Piotr"]
[Result "0-1"]
[ECO "D35"]
[WhiteElo "2211"]
[BlackElo "2255"]
[PlyCount "32"]
[EventDate "2023.09.02"]
[EventType "team-swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 216 Extra"]
[Source "ChessBase"]
[SourceDate "2023.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.30"]
[SourceQuality "1"]
[WhiteTeam "Bogatynia UKS SP3"]
[BlackTeam "Zielonka Zieloni"]
[WhiteTeamCountry "POL"]
[BlackTeamCountry "POL"]

1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Bg5 c6 5. cxd5 exd5 6. e3 Be7 7. Bd3 Bg4 8. Nge2 Bh5 9. 0-0 Nbd7 10. Rb1 a5 11. Qb3 Ra7 12. Ng3 Bg6 13. Nf5 Bxf5 14. Bxf5 0-0 15. f3 h6 16. Bh4 b5 0-1

[Event "POL-chT 2nd League"]
[Site "Jastrzebia Gora"]
[Date "2023.09.02"]
[Round "1.127"]
[White "Darowicki, Mariusz"]
[Black "Siwiec, Arkadiusz"]
[Result "0-1"]
[ECO "A05"]
[WhiteElo "1906"]
[BlackElo "2211"]
[PlyCount "108"]
[EventDate "2023.09.02"]
[EventType "team-swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 216 Extra"]
[Source "ChessBase"]
[SourceDate "2023.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.11.30"]
[SourceQuality "1"]
[WhiteTeam "Bydgoszcz Royal Chess"]
[BlackTeam "Bogatynia UKS SP3"]
[WhiteTeamCountry "POL"]
[BlackTeamCountry "POL"]

1. Nf3 Nf6 2. b3 g6 3. Bb2 Bg7 4. g3 0-0 5. Bg2 c5 6. c4 d5 7. cxd5 Nxd5 8. Bxg7 Kxg7 9. 0-0 Nf6 10. d4 cxd4 11. Qxd4 Nc6 12. Qb2 Qa5 13. h3 Be6 14. Nc3 Kg8 15. Rac1 Rfd8 16. Na4 Ne4 17. Rfd1 Rxd1+ 18. Rxd1 Rd8 19. Rxd8+ Qxd8 20. Qc2 Bf5 21. Qd3 Qxd3 22. exd3 Nd6 23. d4 Nb5 24. Nb2 Nbxd4 25. Nxd4 Nxd4 26. Bxb7 Bb1 27. a4 Nxb3 28. Nc4 Nc5 29. Bc6 Be4 30. Bxe4 Nxe4 31. Kg2 Nc5 32. a5 f6 33. Kf3 Kf7 34. Ke3 e5 35. f4 Ke6 36. fxe5 fxe5 37. g4 Kd5 38. Nd2 a6 39. h4 h6 40. h5 gxh5 41. gxh5 Nb7 42. Ne4 Ke6 43. Kf3 Kf5 44. Ng3+ Kg5 45. Ke4 Kg4 46. Nf5 Kxh5 47. Kxe5 Kg5 48. Ng3 Nxa5 49. Ne4+ Kg6 50. Nc5 Nc6+ 51. Kd6 Nb8 52. Kc7 h5 53. Kxb8 h4 54. Kc7 h3 0-1

[Event "Wroclaw Anderssen Memorial op-A"]
[Site "Wroclaw"]
[Date "2023.08.10"]
[Round "6"]
[White "Siwiec, Arkadiusz"]
[Black "Gibala, Adam"]
[Result "0-1"]
[ECO "E20"]
[WhiteElo "2241"]
[BlackElo "1810"]
[PlyCount "58"]
[EventDate "2023.08.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. f3 c5 5. d5 d6 6. e4 0-0 7. Nge2 b5 8. Ng3 bxc4 9. Bxc4 Qa5 10. Bd2 Ba6 11. Bxa6 Qxa6 12. a3 Bxc3 13. Bxc3 Nbd7 14. Kf2 exd5 15. exd5 Rfe8 16. Qd2 Qc4 17. Nf5 Qxd5 18. Qf4 Re6 19. Rhd1 Qb3 20. Rxd6 Rae8 21. Rad1 Qc2+ 22. Kg1 Rxd6 23. Rxd6 Re2 24. Nh6+ Kf8 25. h4 Rxg2+ 26. Kh1 Re2 27. Qg3 Qc1+ 28. Qg1 Qxh6 29. Bxf6 gxf6 0-1

[Event "Wroclaw Anderssen Memorial op-A"]
[Site "Wroclaw"]
[Date "2023.08.08"]
[Round "4"]
[White "Smietanska, Wiktoria"]
[Black "Siwiec, Arkadiusz"]
[Result "1-0"]
[ECO "A20"]
[WhiteElo "2017"]
[BlackElo "2241"]
[PlyCount "69"]
[EventDate "2023.08.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. c4 e5 2. g3 f5 3. d4 exd4 4. Qxd4 Nc6 5. Qe3+ Be7 6. Bg2 Nf6 7. Nh3 0-0 8. 0-0 Re8 9. Nc3 Bb4 10. Qd2 d6 11. Nf4 Kh8 12. Qc2 Ne5 13. b3 c6 14. Rd1 Qe7 15. Bb2 Bd7 16. Rd2 Rad8 17. Rad1 Bc8 18. Qc1 Ne4 19. Rc2 Nxf2 20. Kxf2 Ng4+ 21. Ke1 Bc5 22. Nh3 Be3 23. Qa1 Nxh2 24. Bc1 Ng4 25. Bf3 Qe5 26. Nf4 Bf2+ 27. Kf1 Bxg3 28. Ng2 Nh2+ 29. Kg1 Qc5+ 30. Kh1 Qf2 31. Bg5 Re6 32. Rd3 Rg6 33. Be3 Qf1+ 34. Qxf1 Nxf1 35. Bf4 1-0

[Event "Wroclaw Anderssen Memorial op-A"]
[Site "Wroclaw"]
[Date "2023.08.07"]
[Round "3"]
[White "Siwiec, Arkadiusz"]
[Black "Holtel, Jasper"]
[Result "0-1"]
[ECO "D87"]
[WhiteElo "2241"]
[BlackElo "2339"]
[PlyCount "70"]
[EventDate "2023.08.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Bc4 c5 8. Ne2 Nc6 9. Be3 0-0 10. 0-0 Bg4 11. f3 Bd7 12. Rc1 Rc8 13. Qd2 Qa5 14. Qb2 b6 15. Rfd1 Rfd8 16. Qb3 Be8 17. f4 a6 18. dxc5 bxc5 19. Qb7 Qa4 20. Rxd8 Rxd8 21. Qxa6 Na5 22. Bb3 Qxe4 23. Kf2 Nxb3 24. axb3 Bc6 25. Rg1 Bf6 26. Ng3 Qc2+ 27. Qe2 Qxb3 28. Rc1 Ra8 29. Rc2 h5 30. Bxc5 Qd5 31. Be3 h4 32. Nf1 Qxg2+ 33. Ke1 Ra1+ 34. Bc1 Qxe2+ 35. Kxe2 Be4 0-1

[Event "Wroclaw Anderssen Memorial op-A"]
[Site "Wroclaw"]
[Date "2023.08.06"]
[Round "2"]
[White "Moranda, Wojciech"]
[Black "Siwiec, Arkadiusz"]
[Result "1/2-1/2"]
[ECO "B90"]
[WhiteElo "2576"]
[BlackElo "2241"]
[PlyCount "65"]
[EventDate "2023.08.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. h4 e5 7. Nb3 Be6 8. f4 exf4 9. Bxf4 Nc6 10. Qd2 d5 11. 0-0-0 Nxe4 12. Nxe4 dxe4 13. Qe3 Qc8 14. Qxe4 Be7 15. Bd3 f5 16. Qe3 0-0 17. Bg5 Re8 18. Bxe7 Rxe7 19. Qf4 Qc7 20. Rhf1 Qxf4+ 21. Rxf4 g6 22. Nc5 Bf7 23. a3 Rd8 24. b4 Ne5 25. Be2 Rxd1+ 26. Kxd1 Bd5 27. g3 Kg7 28. a4 Nd7 29. Nxd7 Rxd7 30. Rd4 Kf6 31. Kd2 Ke5 32. Ke3 Bc6 33. Rxd7 1/2-1/2

[Event "Wroclaw Anderssen Memorial op-A"]
[Site "Wroclaw"]
[Date "2023.08.06"]
[Round "1"]
[White "Siwiec, Arkadiusz"]
[Black "Barwinska, Ewa"]
[Result "1-0"]
[ECO "B38"]
[WhiteElo "2241"]
[BlackElo "1996"]
[PlyCount "81"]
[EventDate "2023.08.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. Nf3 c5 2. c4 Nc6 3. Nc3 Nf6 4. d4 cxd4 5. Nxd4 g6 6. e4 d6 7. Be2 Bg7 8. Be3 0-0 9. 0-0 Nd7 10. Qd2 Nc5 11. Rfd1 Bd7 12. f3 a5 13. Rab1 Ne5 14. b3 Be6 15. Bh6 Nc6 16. Bxg7 Kxg7 17. a3 Qb6 18. b4 axb4 19. axb4 Na4 20. Ncb5 Nxd4 21. Nxd4 Rfc8 22. Rbc1 Qa7 23. Kh1 Nb6 24. Nxe6+ fxe6 25. e5 d5 26. Qg5 Re8 27. c5 Nd7 28. Bb5 Rad8 29. Qg4 Kf7 30. Rd4 Qa3 31. Rg1 Qe3 32. Rf4+ Kg7 33. Bxd7 Rxd7 34. Qxe6 Qxf4 35. Qxd7 Kf8 36. Qxb7 Qxe5 37. c6 Qc3 38. b5 d4 39. Qd7 d3 40. c7 d2 41. b6 1-0

[Event "Pardubice Czech op-E 34th"]
[Site "Pardubice"]
[Date "2023.07.14"]
[Round "2"]
[White "Mladek, Richard"]
[Black "Siwiec, Arkadiusz"]
[Result "1/2-1/2"]
[ECO "D35"]
[WhiteElo "2422"]
[BlackElo "2237"]
[PlyCount "104"]
[EventDate "2023.07.13"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "CZE"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]
[WhiteTeam "Praha Oaza"]
[BlackTeam "Wroclaw Tigers"]
[WhiteTeamCountry "CZE"]
[BlackTeamCountry "POL"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5 exd5 5. Bg5 Be7 6. e3 0-0 7. Bd3 h6 8. Bh4 b6 9. Nge2 Bb7 10. f3 c5 11. 0-0 Nfd7 12. Bf2 Bh4 13. g3 Bf6 14. Nf4 cxd4 15. exd4 Nc6 16. Bb5 a6 17. Ba4 Ne7 18. Bb3 Nb8 19. Nh5 Nd7 20. Qd3 g6 21. Nxf6+ Nxf6 22. Rfe1 Kg7 23. g4 Nc6 24. Bh4 Na5 25. Qd2 Nxb3 26. axb3 Qd6 27. Bg3 Qd8 28. Bf4 Ng8 29. Na4 Bc6 30. Be5+ f6 31. Bg3 Re8 32. Qb4 Rxe1+ 33. Rxe1 Bxa4 34. bxa4 Rc8 35. Re6 Rc4 36. Qd6 Qxd6 37. Rxd6 Kf7 38. Rxd5 Rxa4 39. Rd7+ Ke8 40. Rb7 Rxd4 41. Rxb6 a5 42. Rb8+ Kf7 43. Rb7+ Ne7 44. Ra7 Ke6 45. Ra6+ Kf7 46. Be1 a4 47. Bc3 Rf4 48. Kf2 Nd5 49. Ra7+ Ke6 50. Ra6+ Kf7 51. Ra7+ Ke6 52. Ra6+ Kf7 1/2-1/2

[Event "POL-chT 2nd League"]
[Site "Jastrzebia Gora"]
[Date "2022.09.11"]
[Round "9.47"]
[White "Sopur, Lech"]
[Black "Siwiec, Arkadiusz"]
[Result "1-0"]
[ECO "C00"]
[WhiteElo "2411"]
[BlackElo "2230"]
[PlyCount "85"]
[EventDate "2022.09.03"]
[EventType "team-swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]
[WhiteTeam "Lodz Okucia Budowlane"]
[BlackTeam "Bogatynia UKS SP3"]
[WhiteTeamCountry "POL"]
[BlackTeamCountry "POL"]

1. Nf3 Nf6 2. g3 d5 3. Bg2 e6 4. 0-0 Be7 5. d3 0-0 6. Nbd2 c5 7. e4 Nc6 8. e5 Nd7 9. Re1 Qc7 10. Qe2 Rb8 11. Nf1 b5 12. Bf4 b4 13. h4 Nb6 14. h5 d4 15. h6 g6 16. N1h2 Nd5 17. Bg5 f6 18. exf6 Bxf6 19. Bxf6 Nxf6 20. Ng5 Nd8 21. b3 Rb6 22. a3 a5 23. axb4 axb4 24. Bh3 Qd6 25. Ra7 Rb7 26. Rxb7 Bxb7 27. Bxe6+ Kh8 28. Bc4 Qc6 29. f3 Re8 30. Qd2 Ng8 31. Ng4 Rf8 32. Qe2 Qd6 33. Qe5+ Qxe5 34. Nxe5 Nxh6 35. Nd7 Rf5 36. Re8+ Kg7 37. Re7+ Nhf7 38. Nxf7 Nxf7 39. Ne5 Bxf3 40. Rxf7+ Rxf7 41. Nxf7 Kf6 42. Nd6 Ke5 43. Kf2 1-0

[Event "POL-chT 2nd League"]
[Site "Jastrzebia Gora"]
[Date "2022.09.10"]
[Round "8.60"]
[White "Siwiec, Arkadiusz"]
[Black "Rudolf, Michal"]
[Result "1/2-1/2"]
[ECO "E94"]
[WhiteElo "2230"]
[BlackElo "2328"]
[PlyCount "44"]
[EventDate "2022.09.03"]
[EventType "team-swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]
[WhiteTeam "Bogatynia UKS SP3"]
[BlackTeam "Warszawa YMCA"]
[WhiteTeamCountry "POL"]
[BlackTeamCountry "POL"]

1. Nf3 Nf6 2. c4 g6 3. d4 Bg7 4. Nc3 0-0 5. e4 d6 6. Be2 Nbd7 7. 0-0 e5 8. d5 Nc5 9. Qc2 a5 10. Ne1 b6 11. b3 Ne8 12. f3 f5 13. a3 fxe4 14. fxe4 Rxf1+ 15. Bxf1 Qh4 16. g3 Qh5 17. Rb1 Nf6 18. Bg2 Bh3 19. Bxh3 Qxh3 20. b4 axb4 21. axb4 Ncd7 22. Qg2 Qxg2+ 1/2-1/2

[Event "POL-chT 2nd League"]
[Site "Jastrzebia Gora"]
[Date "2022.09.09"]
[Round "7.48"]
[White "Marczuk, Dominik"]
[Black "Siwiec, Arkadiusz"]
[Result "1/2-1/2"]
[ECO "D00"]
[WhiteElo "2281"]
[BlackElo "2230"]
[PlyCount "105"]
[EventDate "2022.09.03"]
[EventType "team-swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 210 Extra"]
[Source "ChessBase"]
[SourceDate "2022.11.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.11.30"]
[SourceQuality "1"]
[WhiteTeam "Krakow KKSz"]
[BlackTeam "Bogatynia UKS SP3"]
[WhiteTeamCountry "POL"]
[BlackTeamCountry "POL"]

1. d4 d5 2. Nc3 Nf6 3. Bf4 e6 4. Nb5 Na6 5. a3 Be7 6. e3 0-0 7. Nf3 b6 8. Ne5 Bb7 9. Bd3 c5 10. Qf3 Nb8 11. Ng4 Nc6 12. Qh3 g6 13. Nxf6+ Bxf6 14. Nd6 Qe7 15. Nxb7 Qxb7 16. c3 cxd4 17. exd4 b5 18. 0-0 a5 19. Qf3 b4 20. axb4 axb4 21. Bd6 Be7 22. Bxe7 Qxe7 23. Bb5 Na7 24. Be2 Nc6 25. g3 Qb7 26. Qe3 Ne7 27. c4 dxc4 28. Bxc4 Rxa1 29. Rxa1 Rd8 30. Rd1 Qb6 31. d5 Qc7 32. Bb3 Nxd5 33. Qe4 Qc5 34. h4 h5 35. Kg2 Rd7 36. Qe5 Rd8 37. Kg1 Qc6 38. Qe4 Qb5 39. Qe5 Rd7 40. Rd4 Rd8 41. g4 hxg4 42. h5 Qb8 43. Qxb8 Rxb8 44. hxg6 fxg6 45. Bxd5 exd5 46. Rxd5 b3 47. Rd4 g3 48. fxg3 Rc8 49. Rb4 Rc1+ 50. Kf2 Rc2+ 51. Kf3 Rxb2 52. Rb7 Kf8 53. Kg4 1/2-1/2

[Event "Warsaw Najdorf Memorial op-A 18th"]
[Site "Warsaw"]
[Date "2021.07.18"]
[Round "9"]
[White "Kjartansson, Gudmundur"]
[Black "Siwiec, Arkadiusz"]
[Result "0-1"]
[ECO "A29"]
[WhiteElo "2496"]
[BlackElo "2206"]
[PlyCount "96"]
[EventDate "2021.07.10"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]

1. c4 e5 2. g3 Nf6 3. Bg2 Nc6 4. Nc3 Bb4 5. Nf3 Bxc3 6. bxc3 0-0 7. 0-0 Re8 8. d3 e4 9. Ng5 exd3 10. exd3 d6 11. Rb1 Ne5 12. f4 Ned7 13. d4 h6 14. Nf3 Ne4 15. Qd3 Nf8 16. Nd2 Nxd2 17. Bxd2 Rb8 18. f5 Nh7 19. c5 dxc5 20. Qc4 b6 21. Rbd1 cxd4 22. Bf4 Bxf5 23. Bxc7 Rc8 24. Rxd4 Qxc7 25. Qxc7 Rxc7 26. Rxf5 g6 27. Rf2 Re1+ 28. Bf1 Ng5 29. Kg2 Ne4 30. Rf3 Nxc3 31. Rc4 Nd5 32. Rxc7 Nxc7 33. Bc4 Re7 34. a4 Kg7 35. Rd3 Kf6 36. Rd6+ Ke5 37. Rc6 Kd4 38. Bb3 Ne6 39. Bxe6 fxe6 40. a5 b5 41. a6 b4 42. Rc8 b3 43. Rb8 Kc3 44. Rb7 Re8 45. Rxa7 b2 46. Rb7 Kc2 47. Rc7+ Kb3 48. Rb7+ Ka2 0-1

[Event "Warsaw Najdorf Memorial op-A 18th"]
[Site "Warsaw"]
[Date "2021.07.17"]
[Round "8"]
[White "Siwiec, Arkadiusz"]
[Black "Nowak, Mikolaj"]
[Result "1/2-1/2"]
[ECO "A43"]
[WhiteElo "2206"]
[BlackElo "2310"]
[PlyCount "49"]
[EventDate "2021.07.10"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]

1. d4 c5 2. d5 Nf6 3. Nc3 d6 4. e4 g6 5. Nf3 Bg7 6. Be2 0-0 7. 0-0 Na6 8. Bxa6 bxa6 9. Nd2 Nd7 10. Nc4 Rb8 11. Qd3 a5 12. a4 Rb4 13. Nb5 Ba6 14. Bd2 Rxa4 15. Qb3 Rxc4 16. Qxc4 Qb6 17. Rxa5 Rb8 18. Qa2 Bxb5 19. c4 Bxc4 20. Qxc4 Qxb2 21. Rxa7 Ne5 22. Qa2 Qd4 23. Qc2 Bf6 24. Be3 Qb4 25. f3 1/2-1/2

[Event "Warsaw Najdorf Memorial op-A 18th"]
[Site "Warsaw"]
[Date "2021.07.15"]
[Round "6"]
[White "Siwiec, Arkadiusz"]
[Black "Liberadzki, Slawomir"]
[Result "1-0"]
[ECO "B48"]
[WhiteElo "2206"]
[BlackElo "2022"]
[PlyCount "61"]
[EventDate "2021.07.10"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. Nc3 Nc6 4. d4 cxd4 5. Nxd4 Qc7 6. Be3 a6 7. Bd3 Nf6 8. 0-0 Nxd4 9. Bxd4 Bc5 10. Be2 e5 11. Bxc5 Qxc5 12. Qd3 b5 13. Bf3 Bb7 14. Rfe1 d6 15. a4 b4 16. Na2 Ke7 17. Qb3 Rab8 18. Qxb4 Qxb4 19. Nxb4 Bxe4 20. Rxe4 Rhc8 21. Nxa6 Rb6 22. Nb4 Ke6 23. c3 Nxe4 24. Bxe4 Rc5 25. a5 Rbb5 26. a6 Ra5 27. Rd1 f5 28. Bb7 Kd7 29. Kf1 e4 30. Nd5 Ra2 31. b4 1-0

[Event "Warsaw Najdorf Memorial op-A 18th"]
[Site "Warsaw"]
[Date "2021.07.14"]
[Round "5"]
[White "Jedrusik, Adam"]
[Black "Siwiec, Arkadiusz"]
[Result "1/2-1/2"]
[ECO "A48"]
[WhiteElo "2015"]
[BlackElo "2206"]
[PlyCount "117"]
[EventDate "2021.07.10"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. d4 Nf6 2. Bf4 c5 3. e3 g6 4. c3 cxd4 5. exd4 Bg7 6. Nf3 d6 7. Be2 0-0 8. 0-0 Bg4 9. h3 Bxf3 10. Bxf3 d5 11. Nd2 Nc6 12. Nb3 e6 13. Re1 Ne8 14. Qc1 Nd6 15. Nc5 Na5 16. Bg5 Qc7 17. Qf4 b6 18. Nd3 Rac8 19. Bf6 Nf5 20. Bxg7 Qxf4 21. Nxf4 Nxg7 22. Be2 Rc7 23. g4 Rb8 24. Bb5 Nb7 25. Nd3 Nd6 26. a4 Ra8 27. Ba6 Nge8 28. Ne5 Kg7 29. Re2 Nf6 30. f3 h5 31. Kg2 Rh8 32. Ree1 Nd7 33. Nxd7 Rxd7 34. g5 Rb8 35. Bb5 Rc7 36. Ra2 Kf8 37. Kf2 Ke7 38. Raa1 Ra8 39. Ba6 Rd7 40. Bb5 Rc7 41. Ba6 Kd8 42. Re5 Re7 43. Ke3 Rc7 44. Kd2 Ke7 45. Rae1 Kd7 46. Ra1 Kc6 47. Re2 Rd7 48. Ree1 Rdd8 49. Bd3 a6 50. a5 b5 51. b4 Rf8 52. Rg1 Rae8 53. f4 Nf5 54. Rae1 Kd6 55. Bxf5 exf5 56. Re5 Rxe5 57. fxe5+ Ke6 58. Ke3 Rc8 59. Rc1 1/2-1/2

[Event "Warsaw Najdorf Memorial op-A 18th"]
[Site "Warsaw"]
[Date "2021.07.13"]
[Round "4"]
[White "Siwiec, Arkadiusz"]
[Black "Romanishin, Oleg M"]
[Result "0-1"]
[ECO "C96"]
[WhiteElo "2206"]
[BlackElo "2404"]
[PlyCount "52"]
[EventDate "2021.07.10"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 d6 8. c3 0-0 9. h3 Na5 10. Bc2 c5 11. d4 Nd7 12. Nbd2 cxd4 13. cxd4 Nc6 14. Nf1 exd4 15. Nxd4 Nxd4 16. Qxd4 Ne5 17. f4 Nc6 18. Qd2 Be6 19. Ne3 Rc8 20. Nd5 Bh4 21. Re3 Nd4 22. Bd1 Bxd5 23. Qxd4 Bb7 24. Rb1 Rc4 25. Qd3 Qb6 26. Kf1 Bxe4 0-1

[Event "Warsaw Najdorf Memorial op-A 18th"]
[Site "Warsaw"]
[Date "2021.07.12"]
[Round "3"]
[White "Fritz, Antoni"]
[Black "Siwiec, Arkadiusz"]
[Result "0-1"]
[ECO "E10"]
[WhiteElo "1973"]
[BlackElo "2206"]
[PlyCount "74"]
[EventDate "2021.07.10"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. d5 b5 5. Bg5 Qa5+ 6. Bd2 Qb6 7. Qc2 exd5 8. cxd5 Nxd5 9. e4 Nc7 10. a4 a6 11. axb5 axb5 12. Rxa8 Nxa8 13. Be2 Nc7 14. 0-0 Be7 15. Be3 0-0 16. b4 d6 17. e5 Nd5 18. exd6 Nxe3 19. fxe3 Bxd6 20. Ng5 g6 21. Nc3 Be5 22. Nd5 Qd8 23. Qxc5 Qxg5 24. Ne7+ Kg7 25. Nxc8 Na6 26. Qxb5 Qxe3+ 27. Kh1 Nc7 28. Qc4 Rxc8 29. Rxf7+ Kh8 30. Rf3 Qd4 31. Qf7 Qxb4 32. Bd3 Bg7 33. Qd7 Qe1+ 34. Rf1 Qe8 35. Qh3 Rd8 36. Bc4 Qe7 37. Ba2 Qe2 0-1

[Event "Warsaw Najdorf Memorial op-A 18th"]
[Site "Warsaw"]
[Date "2021.07.11"]
[Round "2"]
[White "Siwiec, Arkadiusz"]
[Black "Dragun, Kamil"]
[Result "0-1"]
[ECO "A13"]
[WhiteElo "2206"]
[BlackElo "2557"]
[PlyCount "88"]
[EventDate "2021.07.10"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]

1. Nf3 d5 2. c4 e6 3. g3 d4 4. e3 c5 5. b4 dxe3 6. fxe3 cxb4 7. d4 Nf6 8. Bg2 Be7 9. 0-0 0-0 10. Nbd2 Nbd7 11. Bb2 a5 12. Qe2 Ra6 13. Kh1 Qc7 14. e4 e5 15. Nxe5 Nxe5 16. dxe5 Nd7 17. Nf3 Nc5 18. Nd4 Na4 19. Nb5 Qc6 20. Bd4 Be6 21. Rac1 Nc3 22. Nxc3 bxc3 23. Rxc3 Bc5 24. Qe3 Bxd4 25. Qxd4 Qa4 26. a3 b5 27. Qd1 Qxd1 28. Rxd1 bxc4 29. Bf1 Rc6 30. Kg2 Rc5 31. Rdc1 Rfc8 32. Kf3 Rxe5 33. Kf4 Rb5 34. Ke3 g6 35. Kd4 Rd8+ 36. Ke3 Rb3 37. Kf4 Kg7 38. h4 h5 39. Be2 Rd2 40. R3c2 Rxc2 41. Rxc2 c3 42. a4 Bd7 43. Rc1 Bxa4 44. Bd1 c2 0-1

[Event "Warsaw Maciei Memorial"]
[Site "Warsaw"]
[Date "2021.07.09"]
[Round "3"]
[White "Siwiec, Arkadiusz"]
[Black "Czopor, Maciej"]
[Result "0-1"]
[ECO "B82"]
[WhiteElo "2206"]
[BlackElo "2279"]
[PlyCount "63"]
[EventDate "2021.07.09"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "POL"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. Nc3 Nc6 4. d4 cxd4 5. Nxd4 Qc7 6. Be3 a6 7. Bd3 Nf6 8. 0-0 Be7 9. Kh1 0-0 10. f4 d6 11. Qf3 Nxd4 12. Bxd4 b5 13. e5 dxe5 14. fxe5 Nd5 15. Qh5 g6 16. Qh6 Nxc3 17. Bxc3 Bb7 18. Rae1 Bc5 19. Rf4 Rfd8 20. Rh4 Rxd3 21. Qxh7+ Kf8 22. cxd3 Qc6 23. Re2 Ke7 24. Rf4 Rf8 25. Qg7 Ke8 26. Qf6 Be7 27. Qg7 Bg5 28. Rf1 Qd5 29. Rd1 Be7 30. Qh7 b4 31. Be1 Qxa2 32. Bh4 0-1

[Event "World Corporate East B"]
[Site "Chess.com INT"]
[Date "2021.02.20"]
[Round "5.5"]
[White "Devani, Roopam"]
[Black "Siwiec, Arkadiusz"]
[Result "0-1"]
[ECO "D35"]
[BlackElo "2206"]
[PlyCount "104"]
[EventDate "2021.02.19"]
[EventType "team (rapid)"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]
[WhiteTeam "L&T Electrical & Automation"]
[BlackTeam "Samsung Electronics"]
[WhiteTeamCountry "IND"]
[BlackTeamCountry "POL"]

1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. e3 Bd6 5. Nf3 0-0 6. Be2 b6 7. a3 Bb7 8. b4 dxc4 9. Bxc4 Nbd7 10. 0-0 e5 11. dxe5 Nxe5 12. Nxe5 Bxe5 13. Bb2 Ne4 14. Nxe4 Bxb2 15. Ra2 Be5 16. Ng3 Qh4 17. Bd5 Rad8 18. Rd2 Ba6 19. Bxf7+ Kxf7 20. Rxd8 Rxd8 21. Qf3+ Kg8 22. Rc1 h6 23. h3 Bxg3 24. fxg3 Qe7 25. Qf4 Rd7 26. a4 Bb7 27. Rf1 Rd8 28. Rc1 Rd7 29. Rf1 Kh8 30. Kh2 Rd2 31. Rf2 Rxf2 32. Qxf2 Qe4 33. Qd2 Kh7 34. h4 h5 35. Qe2 Qg4 36. Qd3+ Qe4 37. Qe2 Kh6 38. Qf2 c5 39. bxc5 bxc5 40. Qd2 c4 41. Qb2 Qxg2+ 42. Qxg2 Bxg2 43. Kxg2 c3 44. Kh3 c2 45. a5 c1Q 46. Kg2 Qxe3 47. a6 Kg6 48. Kh3 Kf5 49. Kg2 Kg4 50. Kh1 Qe2 51. Kg1 Kxg3 52. Kh1 Qd1# 0-1

[Event "World Corporate East B"]
[Site "Chess.com INT"]
[Date "2021.02.20"]
[Round "6.4"]
[White "Siwiec, Arkadiusz"]
[Black "Ravichandran, Siddharth"]
[Result "1-0"]
[ECO "B99"]
[WhiteElo "2206"]
[BlackElo "2352"]
[PlyCount "133"]
[EventDate "2021.02.19"]
[EventType "team (rapid)"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]
[WhiteTeam "Samsung Electronics"]
[BlackTeam "NTT Data Services"]
[WhiteTeamCountry "POL"]
[BlackTeamCountry "IND"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 Qc7 9. 0-0-0 Nbd7 10. Bd3 b5 11. Rhe1 Bb7 12. Qg3 h6 13. Bxf6 Bxf6 14. Bxb5 axb5 15. Ndxb5 Qc6 16. Nxd6+ Kf8 17. e5 Be7 18. f5 Nc5 19. Nxf7 Kxf7 20. Qg6+ Kg8 21. f6 Qxg2 22. Qxg2 Bxg2 23. fxe7 Kf7 24. Rg1 Bh3 25. Nb5 g5 26. Nc7 Kxe7 27. Nxa8 Rxa8 28. a3 Bf5 29. Rd4 Rc8 30. Kd1 Nd7 31. c3 Nxe5 32. Rb4 Nd3 33. Rb7+ Kf6 34. Kd2 Rd8 35. Ke3 Nf4 36. Rg3 Rd3+ 37. Kf2 Rd2+ 38. Ke3 Rxh2 39. a4 Ke5 40. Rb5+ Kd6 41. c4 e5 42. a5 g4 43. Rd5+ Ke6 44. Rd2 Rh1 45. b4 Rb1 46. b5 Rb4 47. a6 Rxc4 48. b6 Nd5+ 49. Rxd5 Kxd5 50. b7 Rb4 51. a7 Rxb7 52. a8Q Kc6 53. Rg1 Kc7 54. Rc1+ Kb6 55. Qd8+ Ka6 56. Ra1+ Kb5 57. Qa5+ Kc6 58. Qa6+ Kc7 59. Rc1+ Kb8 60. Qd6+ Ka8 61. Ra1+ Ra7 62. Qc6+ Kb8 63. Qb6+ Rb7 64. Qd8+ Bc8 65. Rc1 Rb3+ 66. Kf2 Rb2+ 67. Kg1 1-0

[Event "World Corporate East B"]
[Site "Chess.com INT"]
[Date "2021.02.20"]
[Round "4.5"]
[White "Siwiec, Arkadiusz"]
[Black "Yuzhakov, Oleg"]
[Result "0-1"]
[ECO "C02"]
[WhiteElo "2206"]
[BlackElo "2321"]
[PlyCount "92"]
[EventDate "2021.02.19"]
[EventType "team (rapid)"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]
[WhiteTeam "Samsung Electronics"]
[BlackTeam "Sovcombank"]
[WhiteTeamCountry "POL"]
[BlackTeamCountry "RUS"]

1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Qb6 5. Nf3 Nc6 6. a3 f6 7. exf6 Nxf6 8. Bd3 Bd6 9. 0-0 0-0 10. Re1 Bd7 11. b4 c4 12. Bc2 Rae8 13. Be3 Qc7 14. Nbd2 b5 15. a4 bxa4 16. Bxa4 Ng4 17. h3 Nxe3 18. Rxe3 Bf4 19. Re2 Re7 20. Bxc6 Bxc6 21. Ne5 Be8 22. Re1 Qb6 23. g3 Bg5 24. f4 Bf6 25. Kg2 g5 26. fxg5 Bxg5 27. Ndf3 Bh6 28. Rf1 Bg7 29. Qd2 Qc7 30. Qg5 Rf5 31. Qe3 Rf6 32. g4 Bg6 33. Nxg6 Rxg6 34. Nh4 Rf6 35. Nf3 Rg6 36. Ra6 e5 37. Rxg6 hxg6 38. dxe5 Bxe5 39. Qg5 Kg7 40. Nh4 Re6 41. Re1 Bf4 42. Nf5+ Kf7 43. Nh6+ Kf8 44. Rf1 Re2+ 45. Kf3 Bxg5 46. Kxe2+ Kg7 0-1

[Event "World Corporate East B"]
[Site "Chess.com INT"]
[Date "2021.02.19"]
[Round "1.9"]
[White "Fallarino, Xavier"]
[Black "Siwiec, Arkadiusz"]
[Result "0-1"]
[ECO "D02"]
[BlackElo "2206"]
[PlyCount "60"]
[EventDate "2021.02.19"]
[EventType "team (rapid)"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]
[WhiteTeam "Hazeltree"]
[BlackTeam "Samsung Electronics"]
[WhiteTeamCountry "ENG"]
[BlackTeamCountry "POL"]

1. d4 d5 2. Bf4 Nf6 3. e3 c5 4. Nf3 Nc6 5. c3 Bg4 6. Be2 e6 7. h3 Bh5 8. g4 Bg6 9. Ne5 Nxe5 10. Bxe5 Nd7 11. Bf4 Be7 12. Nd2 0-0 13. h4 Bxh4 14. Bd6 Be7 15. Bxe7 Qxe7 16. Qb3 Rab8 17. 0-0-0 b5 18. Bxb5 a6 19. a4 axb5 20. axb5 c4 21. Nxc4 dxc4 22. Qxc4 Rfc8 23. Qf1 Nb6 24. b3 Qa3+ 25. Kd2 Qb2+ 26. Ke1 Qxc3+ 27. Rd2 Qxb3 28. Rd3 Bxd3 29. Qh3 Rc1+ 30. Kd2 Qc2# 0-1

[Event "World Corporate East B"]
[Site "Chess.com INT"]
[Date "2021.02.19"]
[Round "2.2"]
[White "Siwiec, Arkadiusz"]
[Black "Komendatyan, Artyom"]
[Result "0-1"]
[ECO "B89"]
[WhiteElo "2206"]
[BlackElo "2195"]
[PlyCount "214"]
[EventDate "2021.02.19"]
[EventType "team (rapid)"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]
[WhiteTeam "Samsung Electronics"]
[BlackTeam "Yandex"]
[WhiteTeamCountry "POL"]
[BlackTeamCountry "RUS"]

1. e4 c5 2. Nf3 e6 3. Nc3 Nc6 4. d4 cxd4 5. Nxd4 d6 6. Be3 Nf6 7. Bc4 Be7 8. Qe2 a6 9. 0-0-0 Qc7 10. Bb3 Bd7 11. g4 Nxd4 12. Bxd4 e5 13. g5 exd4 14. gxf6 dxc3 15. fxe7 cxb2+ 16. Kb1 Be6 17. Rhg1 g6 18. f4 Qxe7 19. Qd3 Bxb3 20. axb3 0-0 21. Rge1 Rad8 22. Qd5 Rfe8 23. Rd3 Qf6 24. Rf3 b5 25. Rd1 Re6 26. Qd4 Rde8 27. Qxf6 Rxf6 28. Rd4 Rfe6 29. Kxb2 Rxe4 30. Rxd6 R8e6 31. Rxe6 Rxe6 32. Rf2 Kg7 33. c4 bxc4 34. bxc4 Kf6 35. Kc3 Ke7 36. Kd4 Kd6 37. Ra2 Kc7 38. c5 Rf6 39. f5 Rxf5 40. Rxa6 h5 41. Kc4 Rf2 42. Ra7+ Kc6 43. Ra6+ Kb7 44. Rb6+ Kc7 45. Ra6 h4 46. h3 Rf3 47. Kd5 Rf5+ 48. Kd4 Kb7 49. Rb6+ Kc7 50. Rb3 Kc6 51. Rb6+ Kd7 52. Rb7+ Kc8 53. Rb3 g5 54. Ra3 Kb7 55. Rb3+ Kc7 56. Ra3 Kb7 57. Rb3+ Kc6 58. Rb6+ Kd7 59. Rb7+ Kc8 60. Rb3 f6 61. Ra3 Kb7 62. Rb3+ Kc6 63. Rb6+ Kc7 64. Rb3 Re5 65. Rf3 Re6 66. Kd5 Kd7 67. Ra3 Re5+ 68. Kd4 Rf5 69. Ra7+ Kc6 70. Ra6+ Kb7 71. Rb6+ Kc7 72. Rb3 Re5 73. Rf3 Re6 74. Kd5 Ra6 75. Re3 Kd7 76. Rb3 Rc6 77. Ra3 Rc7 78. Rf3 Ke7 79. c6 Rc8 80. Re3+ Kf7 81. Kd6 Kg6 82. Kd7 Ra8 83. c7 f5 84. c8Q Rxc8 85. Kxc8 g4 86. Kd7 f4 87. Re6+ Kf5 88. hxg4+ Kxg4 89. Rg6+ Kf3 90. Rh6 Kg3 91. Ke6 f3 92. Rg6+ Kh2 93. Rf6 Kg2 94. Ke5 f2 95. Rg6+ Kh1 96. Rf6 Kg1 97. Rg6+ Kh2 98. Rf6 Kg3 99. Rg6+ Kf3 100. Rf6+ Ke2 101. Ra6 f1Q 102. Ra2+ Kf3 103. Ra3+ Kg4 104. Ra4+ Kg3 105. Ra3+ Qf3 106. Rxf3+ Kxf3 107. Kf5 h3 0-1

[Event "POL-chT Academic"]
[Site "Katowice"]
[Date "2018.02.04"]
[Round "8.15"]
[White "Mucha, Piotr"]
[Black "Siwiec, Arkadiusz"]
[Result "0-1"]
[ECO "B23"]
[WhiteElo "2168"]
[BlackElo "2206"]
[PlyCount "128"]
[EventDate "2018.02.03"]
[EventType "team-swiss (rapid)"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 182 Extra"]
[Source "ChessBase"]
[SourceDate "2018.02.23"]
[SourceVersion "1"]
[SourceVersionDate "2018.02.23"]
[SourceQuality "1"]
[WhiteTeam "Krakow UJ"]
[BlackTeam "Warszawa UW"]
[WhiteTeamCountry "POL"]
[BlackTeamCountry "POL"]

1. e4 c5 2. Nc3 d6 3. Bb5+ Bd7 4. Bxd7+ Nxd7 5. f4 g6 6. Nf3 Bg7 7. 0-0 e6 8. d4 Ne7 9. dxc5 Nxc5 10. Qe2 0-0 11. Kh1 Qb6 12. Rd1 Rfd8 13. Nd2 Qa6 14. Qe3 Rac8 15. Nb3 Na4 16. Nxa4 Qxa4 17. c3 a6 18. Qf3 Nc6 19. Be3 Bf8 20. Bb6 Re8 21. Nd4 Nxd4 22. Rxd4 Qc6 23. Ba5 e5 24. Rd5 exf4 25. Qxf4 Re6 26. Rf1 Qe8 27. Rd4 Rc5 28. Bb4 Rce5 29. Qd2 Rxe4 30. Rxe4 Rxe4 31. h3 Re2 32. Qd5 Qd7 33. Ba3 Re5 34. Qd4 Qc6 35. Qd2 Qd5 36. Qxd5 Rxd5 37. Rf2 Rd1+ 38. Kh2 d5 39. Bxf8 Kxf8 40. Kg3 Ke7 41. Kf3 Re1 42. Rd2 Ke6 43. Kf2 Re5 44. Kf3 f5 45. g4 fxg4+ 46. hxg4 h5 47. gxh5 Rxh5 48. Rg2 Kf6 49. Rd2 b5 50. Re2 Re5 51. Rh2 Rh5 52. Re2 Rh4 53. Kg3 Re4 54. Rxe4 dxe4 55. Kf4 e3 56. Kxe3 Ke5 57. b3 a5 58. Kf3 Kf5 59. Kg3 Ke4 60. Kg4 Kd3 61. c4 bxc4 62. bxc4 Kxc4 63. Kg5 Kb4 64. Kxg6 Ka3 0-1

[Event "POL-chT Academic"]
[Site "Katowice"]
[Date "2018.02.04"]
[Round "7.21"]
[White "Siwiec, Arkadiusz"]
[Black "Demianowicz, Maciej"]
[Result "1/2-1/2"]
[ECO "B33"]
[WhiteElo "2206"]
[BlackElo "1988"]
[PlyCount "65"]
[EventDate "2018.02.03"]
[EventType "team-swiss (rapid)"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 182 Extra"]
[Source "ChessBase"]
[SourceDate "2018.02.23"]
[SourceVersion "1"]
[SourceVersionDate "2018.02.23"]
[SourceQuality "1"]
[WhiteTeam "Warszawa UW"]
[BlackTeam "Gdansk PG"]
[WhiteTeamCountry "POL"]
[BlackTeamCountry "POL"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 h6 7. Nd5 Nxd5 8. exd5 a6 9. dxc6 axb5 10. cxd7+ Bxd7 11. Be2 Qc7 12. 0-0 Bc5 13. Bf3 0-0 14. Re1 Rfe8 15. Bd5 Bc6 16. Bxc6 bxc6 17. Be3 Bxe3 18. Rxe3 Rad8 19. Qe2 Rd5 20. c4 Rc5 21. cxb5 cxb5 22. Re1 Re6 23. h3 Qc6 24. Rb3 Rg6 25. Qf3 Qa6 26. a3 Qa4 27. Rb4 Qc2 28. Qe4 Qxe4 29. Rbxe4 Re6 30. f4 exf4 31. Rxe6 fxe6 32. Rxe6 Rc2 33. b4 1/2-1/2

[Event "POL-chT Academic"]
[Site "Katowice"]
[Date "2018.02.03"]
[Round "4.16"]
[White "Daniel, Damian"]
[Black "Siwiec, Arkadiusz"]
[Result "0-1"]
[ECO "D18"]
[WhiteElo "2122"]
[BlackElo "2206"]
[PlyCount "110"]
[EventDate "2018.02.03"]
[EventType "team-swiss (rapid)"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 182 Extra"]
[Source "ChessBase"]
[SourceDate "2018.02.23"]
[SourceVersion "1"]
[SourceVersionDate "2018.02.23"]
[SourceQuality "1"]
[WhiteTeam "Wroclaw PWr"]
[BlackTeam "Warszawa UW"]
[WhiteTeamCountry "POL"]
[BlackTeamCountry "POL"]

1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. Nf3 dxc4 5. a4 Bf5 6. e3 e6 7. Bxc4 Bb4 8. 0-0 0-0 9. Bd2 h6 10. Ne4 Bxd2 11. Nexd2 Nbd7 12. a5 c5 13. Nb3 Rc8 14. Be2 Be4 15. dxc5 Nxc5 16. Nxc5 Rxc5 17. b4 Rc2 18. Nd4 Rc8 19. Rc1 Qe7 20. Qb3 Rfd8 21. h3 Nd5 22. b5 Qb4 23. Qxb4 Nxb4 24. Bf3 Bxf3 25. Nxf3 Kf8 26. Rb1 Nd3 27. Nd4 Ke7 28. Rfd1 Nc5 29. Kf1 g6 30. Ke2 e5 31. Nf3 Ke6 32. Nd2 Rd7 33. Nc4 Rxd1 34. Rxd1 Nb3 35. Nd6 Rc2+ 36. Ke1 Nxa5 37. Nc8 Nc4 38. Nxa7 Ra2 39. Nc8 Ra8 40. Rd8 e4 41. Kd1 Ra2 42. Ke1 Ra1+ 43. Ke2 Ra2+ 44. Ke1 Ne5 45. Rd6+ Kf5 46. Ne7+ Kg5 47. Rb6 Nd3+ 48. Kf1 Rxf2+ 49. Kg1 Kh4 50. Rd6 Kg3 51. Nd5 Rxg2+ 52. Kf1 Rf2+ 53. Kg1 Ne1 54. Nf4 Nf3+ 55. Kh1 Rh2# 0-1

[Event "POL-chT Academic"]
[Site "Katowice"]
[Date "2018.02.03"]
[Round "6.16"]
[White "Kowalec, Maciej"]
[Black "Siwiec, Arkadiusz"]
[Result "0-1"]
[ECO "E14"]
[WhiteElo "2056"]
[BlackElo "2206"]
[PlyCount "96"]
[EventDate "2018.02.03"]
[EventType "team-swiss (rapid)"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 182 Extra"]
[Source "ChessBase"]
[SourceDate "2018.02.23"]
[SourceVersion "1"]
[SourceVersionDate "2018.02.23"]
[SourceQuality "1"]
[WhiteTeam "Warszawa ALK"]
[BlackTeam "Warszawa UW"]
[WhiteTeamCountry "POL"]
[BlackTeamCountry "POL"]

1. d4 Nf6 2. Nf3 e6 3. e3 c5 4. Bd3 Be7 5. 0-0 0-0 6. b3 b6 7. Bb2 Bb7 8. Nbd2 d6 9. c4 Nbd7 10. Qe2 a6 11. Rad1 Rc8 12. Bb1 Rc7 13. e4 cxd4 14. Nxd4 Qa8 15. f4 g6 16. Rde1 Ne8 17. f5 e5 18. Nc2 b5 19. Ne3 Nef6 20. Nd5 Bxd5 21. cxd5 Rfc8 22. g4 Ne8 23. Nf3 g5 24. h4 h6 25. hxg5 hxg5 26. Kg2 f6 27. Rh1 Bf8 28. Kg3 Bg7 29. Qh2 Nf8 30. Re2 a5 31. Qg1 a4 32. Qe3 Qa7 33. Qxa7 Rxa7 34. Rhh2 axb3 35. axb3 Nd7 36. Rc2 Rxc2 37. Rxc2 Nc5 38. Rc3 b4 39. Rc4 Rb7 40. Nd2 Bf8 41. Kf3 Be7 42. Rc1 Nc7 43. Bc2 Ra7 44. Ra1 Rxa1 45. Bxa1 Kf7 46. Bb2 Ke8 47. Nc4 Nb5 48. Bc1 Nd4+ 0-1

[Event "POL-ch Academic"]
[Site "Katowice"]
[Date "2018.02.03"]
[Round "9"]
[White "Matuszewski, Michal"]
[Black "Siwiec, Arkadiusz"]
[Result "0-1"]
[ECO "D00"]
[WhiteElo "2505"]
[BlackElo "2206"]
[PlyCount "148"]
[EventDate "2018.02.02"]
[EventType "swiss (rapid)"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 182 Extra"]
[Source "ChessBase"]
[SourceDate "2018.02.23"]
[SourceVersion "1"]
[SourceVersionDate "2018.02.23"]
[SourceQuality "1"]

1. d4 d5 2. Bg5 c5 3. e3 Qb6 4. Nc3 e6 5. Qd2 Bd7 6. Nf3 cxd4 7. exd4 Nc6 8. Be2 Bd6 9. Nb5 Bb8 10. a4 Nge7 11. 0-0 f6 12. Bf4 Bxf4 13. Qxf4 0-0 14. Bd3 a6 15. a5 Nxa5 16. Qc7 Qxc7 17. Nxc7 Rac8 18. Nxe6 Bxe6 19. Rxa5 Rfe8 20. Re1 Nc6 21. Raa1 Bg4 22. c3 Bxf3 23. gxf3 Kf7 24. f4 g6 25. f5 g5 26. Be2 Kf8 27. Bf3 Rxe1+ 28. Rxe1 Ne7 29. Re6 Rc6 30. Rxc6 bxc6 31. b4 Nxf5 32. Be2 Nd6 33. Bxa6 Ne4 34. Bb7 Nxc3 35. Bxc6 Ke7 36. Kf1 Kd6 37. Be8 Ke7 38. Bc6 Kd6 39. b5 Kc7 40. Ke1 Kb6 41. Kd2 Nxb5 42. Bxd5 Nxd4 43. Ke3 Kc5 44. Be4 h6 45. Bg6 Kd5 46. f4 Ne6 47. Be4+ Kd6 48. fxg5 hxg5 49. Kf3 Ke5 50. Ba8 f5 51. Bb7 Nd4+ 52. Ke3 f4+ 53. Kf2 g4 54. Bc8 Nf5 55. Kg2 Ne3+ 56. Kf2 Kd4 57. Ke2 Kc3 58. Bd7 Kd4 59. Bc8 Kc3 60. Bd7 Kd4 61. Bc8 Ke4 62. Bd7 f3+ 63. Kf2 Kf4 64. Bc8 Nf5 65. Bd7 Nd6 66. Be6 Ne4+ 67. Kf1 Ke3 68. Bxg4 Nd2+ 69. Kg1 f2+ 70. Kg2 f1Q+ 71. Kg3 Qf2+ 72. Kh3 Qf4 73. Kh4 Nf3+ 74. Kh5 Qg5# 0-1

[Event "POL-chT Academic"]
[Site "Katowice"]
[Date "2018.02.03"]
[Round "5.22"]
[White "Siwiec, Arkadiusz"]
[Black "Smal, Tobiasz"]
[Result "0-1"]
[ECO "B96"]
[WhiteElo "2206"]
[BlackElo "1958"]
[PlyCount "102"]
[EventDate "2018.02.03"]
[EventType "team-swiss (rapid)"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 182 Extra"]
[Source "ChessBase"]
[SourceDate "2018.02.23"]
[SourceVersion "1"]
[SourceVersionDate "2018.02.23"]
[SourceQuality "1"]
[WhiteTeam "Warszawa UW"]
[BlackTeam "Poznan UE"]
[WhiteTeamCountry "POL"]
[BlackTeamCountry "POL"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 h6 8. Bh4 Qb6 9. a3 Nc6 10. Bf2 Qc7 11. Qf3 Bd7 12. 0-0-0 Be7 13. Bd3 g5 14. g3 Nxd4 15. Bxd4 e5 16. Be3 Bg4 17. Qf1 Bxd1 18. Qxd1 Rg8 19. Kb1 gxf4 20. gxf4 0-0-0 21. Qf3 Kb8 22. h3 h5 23. Bf2 d5 24. exd5 exf4 25. Re1 Rde8 26. Bd4 Rg3 27. Qf1 Bd8 28. Rxe8 Nxe8 29. Ne2 Rg8 30. Nxf4 h4 31. Ne2 Nd6 32. c4 f5 33. Nc3 Rf8 34. Qf4 Bf6 35. c5 Bxd4 36. Qxd4 Nb5 37. Bxb5 axb5 38. Nxb5 Qa5 39. Qf4+ Ka8 40. a4 Qe1+ 41. Ka2 Qe4 42. Qf1 Qxa4+ 43. Kb1 Qe4+ 44. Ka1 Qa4+ 45. Kb1 f4 46. d6 f3 47. d7 Qe4+ 48. Ka1 f2 49. Qxf2 Qh1+ 50. Ka2 Qd5+ 51. b3 Rxf2+ 0-1

[Event "POL-chT Academic"]
[Site "Katowice"]
[Date "2018.02.03"]
[Round "3.4"]
[White "Siwiec, Arkadiusz"]
[Black "Smolka, Marcin"]
[Result "1/2-1/2"]
[ECO "C81"]
[WhiteElo "2206"]
[BlackElo "2178"]
[PlyCount "138"]
[EventDate "2018.02.03"]
[EventType "team-swiss (rapid)"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 182 Extra"]
[Source "ChessBase"]
[SourceDate "2018.02.23"]
[SourceVersion "1"]
[SourceVersionDate "2018.02.23"]
[SourceQuality "1"]
[WhiteTeam "Warszawa UW"]
[BlackTeam "Krakow AGH"]
[WhiteTeamCountry "POL"]
[BlackTeamCountry "POL"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Nbd2 Bc5 10. Qe2 Nxd2 11. Bxd2 h6 12. a4 Rb8 13. axb5 axb5 14. Rad1 0-0 15. Be3 Bxe3 16. Qxe3 Na5 17. Qc5 Nc4 18. Bxc4 bxc4 19. Rb1 Qd7 20. Nd4 Rfe8 21. f4 Bf5 22. b3 cxb3 23. Rxb3 Rxb3 24. cxb3 Be4 25. h3 Qd8 26. Qc6 Rf8 27. Qc3 Qh4 28. b4 Ra8 29. Qe1 Qxe1 30. Rxe1 Ra2 31. Re2 Ra1+ 32. Kf2 Rd1 33. Nb3 g5 34. fxg5 hxg5 35. Nc5 Bf5 36. Rb2 d4 37. Ke2 Rg1 38. Kf2 Rd1 39. Ke2 Rh1 40. Rd2 Rg1 41. Kf2 Rb1 42. Rxd4 Rb2+ 43. Kf3 Kg7 44. g4 Bb1 45. Kg3 Rc2 46. Ne4 Re2 47. Nxg5 Rxe5 48. Kf4 Re1 49. h4 Rf1+ 50. Nf3 c6 51. h5 Ba2 52. Kg3 Bd5 53. Rf4 Kh6 54. Rf6+ Kg7 55. Rf4 Kh6 56. Rf6+ Kg7 57. Rf5 Be4 58. Rf4 Bd5 59. Nh4 Rg1+ 60. Kf2 Rb1 61. g5 Rb2+ 62. Kg3 Rb3+ 63. Kg4 Be6+ 64. Nf5+ Kh7 65. Kh4 Bxf5 66. Rxf5 Rxb4+ 67. Kg3 Rb3+ 68. Kg4 Rb4+ 69. Kg3 Rb3+ 1/2-1/2

[Event "POL-ch Academic"]
[Site "Katowice"]
[Date "2018.02.03"]
[Round "8"]
[White "Siwiec, Arkadiusz"]
[Black "Wiewiora, Eneasz"]
[Result "1-0"]
[ECO "C63"]
[WhiteElo "2206"]
[BlackElo "2333"]
[PlyCount "118"]
[EventDate "2018.02.02"]
[EventType "swiss (rapid)"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 182 Extra"]
[Source "ChessBase"]
[SourceDate "2018.02.23"]
[SourceVersion "1"]
[SourceVersionDate "2018.02.23"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 f5 4. d3 fxe4 5. dxe4 Nf6 6. Nc3 Bb4 7. 0-0 Bxc3 8. bxc3 d6 9. Nd2 0-0 10. Ba3 Ne7 11. Bd3 Ng6 12. g3 Bh3 13. Re1 Qd7 14. Nc4 Kh8 15. Bc1 Rad8 16. Ne3 Qc6 17. f3 d5 18. exd5 Nxd5 19. Nxd5 Qxd5 20. Bg5 Rxf3 21. Qe2 Qc5+ 22. Be3 Qf8 23. Be4 Rf7 24. Bxb7 Nf4 25. Qb5 Ne6 26. Qxe5 Qd6 27. Qxd6 Rxd6 28. Bg2 Bxg2 29. Kxg2 c5 30. Rad1 Rxd1 31. Rxd1 h6 32. Rd6 Re7 33. Rc6 Kh7 34. Kf3 g5 35. Bxc5 Rf7+ 36. Kg2 Ng7 37. Bd4 Nf5 38. Ra6 Kg8 39. Rxa7 Rf8 40. Ra5 Nd6 41. Rd5 Ne4 42. Rd7 Rf5 43. Rg7+ Kf8 44. Rh7 g4 45. Rxh6 Kf7 46. Rh7+ Kg6 47. Rg7+ Kh5 48. Rh7+ Kg6 49. Rh4 Kg5 50. Rh8 Rb5 51. Rg8+ Kf5 52. Rf8+ Kg5 53. Re8 Nd2 54. Re5+ Rxe5 55. Bxe5 Kf5 56. Bd4 Ke4 57. a4 Nc4 58. h3 gxh3+ 59. Kxh3 Kd5 1-0

[Event "POL-ch Academic"]
[Site "Katowice"]
[Date "2018.02.02"]
[Round "3"]
[White "Sadzikowski, Daniel"]
[Black "Siwiec, Arkadiusz"]
[Result "1-0"]
[ECO "A11"]
[WhiteElo "2584"]
[BlackElo "2206"]
[PlyCount "67"]
[EventDate "2018.02.02"]
[EventType "swiss (rapid)"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 182 Extra"]
[Source "ChessBase"]
[SourceDate "2018.02.23"]
[SourceVersion "1"]
[SourceVersionDate "2018.02.23"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 c6 3. e3 d5 4. Nc3 Bf5 5. cxd5 Nxd5 6. Qb3 Nb6 7. Be2 e6 8. 0-0 Be7 9. d4 0-0 10. e4 Bg6 11. Be3 N8d7 12. Rad1 Nf6 13. Nd2 Rc8 14. f4 Qc7 15. a4 Rfd8 16. Rc1 Qb8 17. a5 Nbd7 18. g4 h6 19. f5 exf5 20. gxf5 Bh5 21. Bxh5 Nxh5 22. Qd1 Nhf6 23. e5 Nxe5 24. dxe5 Qxe5 25. Nc4 Qb8 26. Qf3 Nd5 27. Rcd1 Nxe3 28. Nxe3 Qe5 29. Ng4 Qxa5 30. f6 Rxd1 31. Rxd1 Bxf6 32. Nxf6+ gxf6 33. Kh1 Qe5 34. Qg4+ 1-0

[Event "BL2-Nord 1718"]
[Site "Germany"]
[Date "2017.10.22"]
[Round "2.8"]
[White "Kardoeus, David"]
[Black "Siwiec, Arkadiusz"]
[Result "0-1"]
[ECO "B63"]
[WhiteElo "2182"]
[BlackElo "2196"]
[PlyCount "86"]
[EventDate "2017.10.08"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 183 Extra"]
[Source "ChessBase"]
[SourceDate "2018.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2018.04.19"]
[SourceQuality "1"]
[WhiteTeam "Werder Bremen II"]
[BlackTeam "Glueck Auf Ruedersdorf"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Qd2 Be7 8. 0-0-0 0-0 9. h4 Nxd4 10. Qxd4 Qa5 11. Kb1 Rd8 12. Bd2 Qc5 13. Qxc5 dxc5 14. Be2 b6 15. g4 Bb7 16. f3 a6 17. Rhg1 b5 18. a4 b4 19. Na2 a5 20. Bf4 Bc6 21. Bb5 Rdc8 22. c4 Kf8 23. Rd2 Ne8 24. g5 f6 25. Rgd1 e5 26. Be3 Kf7 27. Nc1 Ke6 28. Nd3 Bxb5 29. axb5 a4 30. f4 Nd6 31. Nxc5+ Rxc5 32. f5+ Kf7 33. Bxc5 Nxe4 34. Bxe7 Nxd2+ 35. Rxd2 Kxe7 36. b6 Rd8 37. Rc2 Rd1+ 38. Rc1 Rxc1+ 39. Kxc1 Kd6 40. h5 h6 41. gxh6 gxh6 42. Kc2 Kc6 43. c5 e4 0-1

[Event "BL2-Nord 1617"]
[Site "Germany"]
[Date "2017.02.19"]
[Round "6.7"]
[White "Siwiec, Arkadiusz"]
[Black "Boe, Mads"]
[Result "1/2-1/2"]
[ECO "B19"]
[WhiteElo "2192"]
[BlackElo "2325"]
[PlyCount "118"]
[EventDate "2016.10.16"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]
[WhiteTeam "Ruedersdorf"]
[BlackTeam "Kiel Turm"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. h4 h6 7. Nf3 Nf6 8. h5 Bh7 9. Bd3 Bxd3 10. Qxd3 e6 11. Bd2 c5 12. Ne4 Nc6 13. Nxc5 Bxc5 14. dxc5 Qxd3 15. cxd3 0-0-0 16. Ke2 Rd5 17. Be3 Rhd8 18. Rad1 Nxh5 19. g4 Nf6 20. g5 hxg5 21. Nxg5 Nd4+ 22. Kf1 Rf8 23. Ne4 Nf5 24. Nxf6 gxf6 25. b4 Rfd8 26. Rh7 R8d7 27. Ke2 Kc7 28. Rh8 a6 29. a4 Nd4+ 30. Kd2 a5 31. Kc3 axb4+ 32. Kxb4 Nc6+ 33. Kc3 Ne5 34. d4 Nc6 35. Bf4+ e5 36. dxe5 Rxc5+ 37. Kb2 fxe5 38. Rxd7+ Kxd7 39. Be3 Rc4 40. Kb3 Rb4+ 41. Ka3 b5 42. axb5 Rxb5 43. Rh6 Ne7 44. Rb6 Rxb6 45. Bxb6 Kc6 46. Ba7 Kd5 47. Kb3 Ke4 48. Kc3 Kf3 49. Kd2 f5 50. Ke1 e4 51. Kf1 f4 52. Bb6 Nd5 53. Ba7 Kg4 54. Bc5 Kh3 55. Bd6 Kh2 56. Ke2 Kg2 57. Bxf4 Nxf4+ 58. Ke3 Nh3 59. Kxe4 Kxf2 1/2-1/2

[Event "Poznan op 24th"]
[Site "Poznan"]
[Date "2016.08.15"]
[Round "9"]
[White "Kyc, Jerzy"]
[Black "Siwiec, Arkadiusz"]
[Result "1/2-1/2"]
[ECO "B63"]
[WhiteElo "2221"]
[BlackElo "2194"]
[PlyCount "79"]
[EventDate "2016.08.08"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 173 Extra"]
[Source "ChessBase"]
[SourceDate "2016.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2016.08.29"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Qd2 Be7 8. 0-0-0 0-0 9. f3 d5 10. exd5 Nxd5 11. Bxe7 Ncxe7 12. Bc4 Nxc3 13. Qxc3 Qb6 14. g4 a6 15. Bb3 Rd8 16. h4 Bd7 17. h5 Rac8 18. Qe3 Nc6 19. h6 Nxd4 20. Rxd4 Be8 21. Re4 Qxe3+ 22. Rxe3 gxh6 23. Rxh6 Kg7 24. Rh2 Rd4 25. c3 Rf4 26. Bc2 h6 27. Be4 Bc6 28. Bxc6 Rxc6 29. Rd2 b5 30. b3 Kg6 31. Rd7 e5 32. Re7 Rcf6 33. R7xe5 Rxf3 34. Rxf3 Rxf3 35. Rc5 Rf4 36. Rc6+ Rf6 37. Rc5 Rf4 38. Rc6+ Rf6 39. Rc5 Rf4 40. Rc6+ 1/2-1/2

[Event "Poznan op 24th"]
[Site "Poznan"]
[Date "2016.08.14"]
[Round "8"]
[White "Siwiec, Arkadiusz"]
[Black "Sobczak, Miroslaw"]
[Result "1-0"]
[ECO "B00"]
[WhiteElo "2194"]
[BlackElo "1804"]
[PlyCount "51"]
[EventDate "2016.08.08"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. e4 Nc6 2. d4 d5 3. e5 Bf5 4. Nf3 Qd7 5. Be2 f6 6. 0-0 0-0-0 7. c3 Bg4 8. Re1 g5 9. b4 Nb8 10. Nbd2 h5 11. Nb3 b6 12. a4 h4 13. a5 Bf5 14. axb6 cxb6 15. c4 g4 16. cxd5 gxf3 17. Bxf3 Qb5 18. Bf4 Rxd5 19. Qc1+ Kb7 20. Nc5+ bxc5 21. Bxd5+ Nc6 22. bxc5 e6 23. Bc4 Qb4 24. Bd2 Bh6 25. Re3 Bxe3 26. fxe3 1-0

[Event "Poznan op 24th"]
[Site "Poznan"]
[Date "2016.08.13"]
[Round "6"]
[White "Siwiec, Arkadiusz"]
[Black "Banach, Szymon"]
[Result "1-0"]
[ECO "E99"]
[WhiteElo "2194"]
[BlackElo "2015"]
[PlyCount "67"]
[EventDate "2016.08.08"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 173 Extra"]
[Source "ChessBase"]
[SourceDate "2016.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2016.08.29"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. d4 0-0 6. Be2 e5 7. 0-0 Nc6 8. d5 Ne7 9. Ne1 Nd7 10. f3 f5 11. Be3 f4 12. Bf2 g5 13. a4 Ng6 14. a5 Nf6 15. c5 h5 16. cxd6 cxd6 17. Nb5 a6 18. Bb6 Qe7 19. Nc7 Rb8 20. Rc1 Bd7 21. Ne6 Bxe6 22. dxe6 Ne8 23. Qa4 Kh7 24. Qd7 Nf6 25. Qxe7 Nxe7 26. Nd3 d5 27. Nxe5 dxe4 28. fxe4 Nc6 29. Nxc6 bxc6 30. Rxc6 Kg8 31. Bxa6 Nxe4 32. Re1 Nf6 33. e7 Rfe8 34. Bc4+ 1-0

[Event "Poznan op 24th"]
[Site "Poznan"]
[Date "2016.08.13"]
[Round "7"]
[White "Walkusz, Witoslaw"]
[Black "Siwiec, Arkadiusz"]
[Result "1-0"]
[ECO "B52"]
[WhiteElo "2132"]
[BlackElo "2194"]
[PlyCount "109"]
[EventDate "2016.08.08"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 173 Extra"]
[Source "ChessBase"]
[SourceDate "2016.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2016.08.29"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. a4 Nf6 5. Qe2 Nc6 6. c3 a6 7. Bc4 e6 8. 0-0 Be7 9. Bb3 0-0 10. d4 cxd4 11. cxd4 Qb6 12. Bc2 Nxd4 13. Nxd4 Qxd4 14. Rd1 Qc5 15. Be3 Qc7 16. Nc3 b5 17. axb5 axb5 18. Rac1 Qb7 19. e5 dxe5 20. Bg5 Bc6 21. Qxe5 Rfd8 22. f3 Rxd1+ 23. Nxd1 Nd7 24. Qg3 Bxg5 25. Qxg5 b4 26. Bb3 h6 27. Qe3 Nf6 28. Qc5 Bd5 29. Bxd5 Nxd5 30. Ne3 Nf4 31. Qc4 Qb8 32. g3 Ng6 33. f4 Qb6 34. Qc5 Qb7 35. Qc6 Qb8 36. Qc7 Qb5 37. Qc6 Qxc6 38. Rxc6 Ra1+ 39. Kf2 Rb1 40. Rc8+ Kh7 41. Rc2 e5 42. f5 Ne7 43. Kf3 b3 44. Rd2 g6 45. g4 h5 46. h3 Kg7 47. Ke4 Rh1 48. Kxe5 f6+ 49. Ke6 Rxh3 50. Rd3 Nc6 51. Rd7+ Kg8 52. Nd5 Nd4+ 53. Kxf6 gxf5 54. Ne7+ Kh7 55. Ng6+ 1-0

[Event "Poznan op 24th"]
[Site "Poznan"]
[Date "2016.08.12"]
[Round "5"]
[White "Barski, Radoslaw"]
[Black "Siwiec, Arkadiusz"]
[Result "1-0"]
[ECO "C70"]
[WhiteElo "2355"]
[BlackElo "2194"]
[PlyCount "51"]
[EventDate "2016.08.08"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 173 Extra"]
[Source "ChessBase"]
[SourceDate "2016.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2016.08.29"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nge7 5. c3 g6 6. d4 exd4 7. cxd4 b5 8. Bb3 Bg7 9. d5 Na5 10. Bd2 Nxb3 11. axb3 0-0 12. Bc3 f6 13. 0-0 Bb7 14. Re1 c6 15. Ba5 Qe8 16. Bb4 Qf7 17. d6 Nc8 18. Bc5 Re8 19. Qd3 Bf8 20. Nbd2 Re6 21. e5 h6 22. exf6 Bxd6 23. Rxe6 Bxc5 24. Re2 d5 25. Ne5 Qxf6 26. Nd7 1-0

[Event "Poznan op 24th"]
[Site "Poznan"]
[Date "2016.08.11"]
[Round "4"]
[White "Siwiec, Arkadiusz"]
[Black "Schmidt, Wlodzimierz"]
[Result "1/2-1/2"]
[ECO "A16"]
[WhiteElo "2194"]
[BlackElo "2291"]
[PlyCount "53"]
[EventDate "2016.08.08"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 173 Extra"]
[Source "ChessBase"]
[SourceDate "2016.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2016.08.29"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. Qa4+ Nc6 6. Ne5 Qd6 7. Nxc6 Qxc6 8. Qxc6+ bxc6 9. g3 Bg7 10. Bg2 Be6 11. a3 0-0 12. e3 Nxc3 13. bxc3 Bd5 14. 0-0 Bxg2 15. Kxg2 c5 16. a4 Rfd8 17. Kf3 Rab8 18. Ke2 e5 19. Ba3 Bf8 20. Rfb1 a6 21. e4 f5 22. f3 Kf7 23. Rxb8 Rxb8 24. Kd3 Rd8+ 25. Ke2 Rb8 26. Kd3 Rd8+ 27. Ke2 1/2-1/2

[Event "Poznan op 24th"]
[Site "Poznan"]
[Date "2016.08.10"]
[Round "3"]
[White "Kaluzny, Tomasz"]
[Black "Siwiec, Arkadiusz"]
[Result "0-1"]
[ECO "A22"]
[WhiteElo "1843"]
[BlackElo "2194"]
[PlyCount "74"]
[EventDate "2016.08.08"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 173 Extra"]
[Source "ChessBase"]
[SourceDate "2016.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2016.08.29"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nf6 3. g3 Bb4 4. Nd5 Nxd5 5. cxd5 0-0 6. Bg2 c6 7. a3 Be7 8. b4 a5 9. dxc6 dxc6 10. Rb1 axb4 11. axb4 b5 12. Bb2 f6 13. Bc3 Ra4 14. Nf3 Na6 15. 0-0 Nxb4 16. d4 Nd5 17. Qb3 Ra3 18. Qb2 Nxc3 19. Ra1 Na4 20. Qc2 Rxa1 21. Rxa1 Qd6 22. dxe5 fxe5 23. Nd2 Nc5 24. Rd1 Qf6 25. Rf1 Bd7 26. Qa2+ Kh8 27. Qa7 Qd6 28. Ne4 Nxe4 29. Bxe4 Qd4 30. Qb7 Bc5 31. e3 Qxe4 32. Qxd7 Bxe3 33. Qe7 Bxf2+ 34. Rxf2 Qe1+ 35. Kg2 Qxf2+ 36. Kh3 Qf1+ 37. Kh4 Qf6+ 0-1

[Event "Poznan op 24th"]
[Site "Poznan"]
[Date "2016.08.09"]
[Round "2"]
[White "Siwiec, Arkadiusz"]
[Black "Korcz, Daniel"]
[Result "1-0"]
[ECO "E41"]
[WhiteElo "2194"]
[BlackElo "1779"]
[PlyCount "74"]
[EventDate "2016.08.08"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 173 Extra"]
[Source "ChessBase"]
[SourceDate "2016.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2016.08.29"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Bb4 4. Nf3 Nf6 5. e3 c5 6. a3 Bxc3+ 7. bxc3 Qa5 8. Bb2 0-0 9. Nd2 cxd4 10. cxd4 Bd7 11. Bd3 dxc4 12. Bxc4 Ne4 13. f3 Ba4 14. Qe2 Nxd2 15. Qxd2 Nc6 16. Bc3 Qc7 17. Rc1 Rac8 18. 0-0 Rfd8 19. Ba2 Bb5 20. Rfe1 Qd7 21. Ba1 Ne7 22. Rxc8 Rxc8 23. e4 Bc4 24. Bb1 Ng6 25. Rc1 b5 26. g3 f6 27. Qa5 Be2 28. Rxc8+ Qxc8 29. Bb2 Bxf3 30. Qxb5 Ne7 31. a4 a6 32. Qb3 Be2 33. Ba2 Kf7 34. Ba3 Qd7 35. d5 Qa7+ 36. Kg2 exd5 37. exd5 Kg6 1-0

[Event "Poznan op 24th"]
[Site "Poznan"]
[Date "2016.08.08"]
[Round "1"]
[White "Wasiak, Stanislaw"]
[Black "Siwiec, Arkadiusz"]
[Result "0-1"]
[ECO "D13"]
[WhiteElo "1601"]
[BlackElo "2194"]
[PlyCount "68"]
[EventDate "2016.08.08"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 173 Extra"]
[Source "ChessBase"]
[SourceDate "2016.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2016.08.29"]
[SourceQuality "1"]

1. c4 c6 2. Nc3 d5 3. cxd5 cxd5 4. d4 Nc6 5. g3 Nf6 6. Nf3 Bf5 7. Bg2 e6 8. 0-0 Be7 9. Nh4 Bg4 10. f3 Bh5 11. Bg5 h6 12. Bxf6 Bxf6 13. e3 Bxh4 14. gxh4 Qxh4 15. Qe1 Qxe1 16. Raxe1 0-0 17. e4 dxe4 18. Nxe4 Nxd4 19. Ng3 Bg6 20. f4 Rab8 21. f5 Nxf5 22. Nxf5 Bxf5 23. Be4 Bxe4 24. Rxe4 Rfd8 25. Rc1 Rd2 26. Rb4 b5 27. Rc7 a5 28. Rb3 b4 29. a3 a4 30. Rxb4 Rxb4 31. axb4 Rxb2 32. Rb7 a3 33. Ra7 a2 34. b5 Rb1+ 0-1

[Event "POL-chT U26 rapid"]
[Site "Hucisko"]
[Date "2016.01.17"]
[Round "8.19"]
[White "Lewtak, Damian"]
[Black "Siwiec, Arkadiusz"]
[Result "1/2-1/2"]
[ECO "E07"]
[WhiteElo "2338"]
[BlackElo "2170"]
[PlyCount "69"]
[EventDate "2016.01.16"]
[EventType "team-swiss (rapid)"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 170 Extra"]
[Source "ChessBase"]
[SourceDate "2016.02.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.02.25"]
[SourceQuality "1"]
[WhiteTeam "Rzeszow URz"]
[BlackTeam "Poznan PP"]
[WhiteTeamCountry "POL"]
[BlackTeamCountry "POL"]

1. Nf3 d5 2. g3 Nf6 3. Bg2 e6 4. 0-0 Be7 5. c4 c6 6. b3 0-0 7. Bb2 Nbd7 8. d4 b6 9. Nbd2 Bb7 10. Re1 Rc8 11. Ne5 Rc7 12. Rc1 c5 13. a3 Qa8 14. cxd5 Bxd5 15. Bxd5 Qxd5 16. e4 Qb7 17. dxc5 Nxc5 18. b4 Ncd7 19. Qe2 Rfc8 20. Rxc7 Rxc7 21. Nxd7 Nxd7 22. Nb3 Qc8 23. Rc1 Rxc1+ 24. Nxc1 Bf6 25. Nd3 Bxb2 26. Qxb2 h6 27. Qd4 Qc6 28. e5 a5 29. bxa5 bxa5 30. h4 Nb6 31. Nc5 Nd5 32. Kh2 Qb6 33. Kg2 Qc6 34. Kh2 Qb6 35. Kg2 1/2-1/2

[Event "POL-chT U26 rapid"]
[Site "Hucisko"]
[Date "2016.01.17"]
[Round "9.1"]
[White "Tomczak, Jacek"]
[Black "Siwiec, Arkadiusz"]
[Result "1/2-1/2"]
[ECO "B57"]
[WhiteElo "2587"]
[BlackElo "2170"]
[PlyCount "86"]
[EventDate "2016.01.16"]
[EventType "team-swiss (rapid)"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 170 Extra"]
[Source "ChessBase"]
[SourceDate "2016.02.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.02.25"]
[SourceQuality "1"]
[WhiteTeam "Poznan UE"]
[BlackTeam "Poznan PP"]
[WhiteTeamCountry "POL"]
[BlackTeamCountry "POL"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bc4 Qb6 7. Nxc6 bxc6 8. 0-0 g6 9. Qe1 Nd7 10. Na4 Qc7 11. Qc3 Nf6 12. f4 Bg7 13. Qf3 0-0 14. Bd3 a5 15. Bd2 Ba6 16. c4 Nd7 17. Rac1 Rfb8 18. b3 Bc8 19. Be3 Qd8 20. h3 Qe8 21. g4 Qd8 22. g5 Bb7 23. Rc2 e6 24. h4 d5 25. c5 f5 26. e5 Ba6 27. Bxa6 Rxa6 28. Bd4 Kf7 29. h5 Raa8 30. Nb6 Nxb6 31. cxb6 Rxb6 32. Bxb6 Qxb6+ 33. Qf2 Qb7 34. Rfc1 Ra6 35. Rc3 Bf8 36. Rh3 Qb4 37. hxg6+ hxg6 38. Rh7+ Bg7 39. Rc2 Qe4 40. Re2 Qd3 41. Re3 Qd1+ 42. Kg2 Qd4 43. Kf3 c5 1/2-1/2

[Event "POL-chT U26 rapid"]
[Site "Hucisko"]
[Date "2016.01.16"]
[Round "3.19"]
[White "Siwiec, Arkadiusz"]
[Black "Klekowski, Maciej"]
[Result "0-1"]
[ECO "B34"]
[WhiteElo "2170"]
[BlackElo "2457"]
[PlyCount "82"]
[EventDate "2016.01.16"]
[EventType "team-swiss (rapid)"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 170 Extra"]
[Source "ChessBase"]
[SourceDate "2016.02.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.02.25"]
[SourceQuality "1"]
[WhiteTeam "Poznan PP"]
[BlackTeam "Krakow AGH"]
[WhiteTeamCountry "POL"]
[BlackTeamCountry "POL"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. Nxc6 bxc6 8. e5 Ng8 9. Bd4 Nh6 10. e6 0-0 11. Bxg7 Kxg7 12. Qd4+ f6 13. exd7 Qxd7 14. Qxd7 Bxd7 15. 0-0-0 Rfd8 16. f3 Nf5 17. Re1 e5 18. Bc4 Be8 19. Ne4 Bf7 20. Bxf7 Kxf7 21. g3 Rd5 22. Nc3 Rd4 23. Rd1 Ne3 24. Rxd4 exd4 25. Ne2 c5 26. b3 a5 27. a4 Re8 28. Nf4 c4 29. bxc4 Nxc4 30. Rd1 g5 31. Nd5 Ne5 32. f4 Nf3 33. Rd3 g4 34. Nb6 Re1+ 35. Kb2 h5 36. Nc4 h4 37. gxh4 Nxh2 38. Nxa5 Re3 39. Rxd4 g3 40. Nc4 g2 41. Rd1 Rg3 0-1

[Event "POL-chT U26 rapid"]
[Site "Hucisko"]
[Date "2016.01.16"]
[Round "5.19"]
[White "Siwiec, Arkadiusz"]
[Black "Reza, Wojciech"]
[Result "0-1"]
[ECO "C60"]
[WhiteElo "2170"]
[BlackElo "2263"]
[PlyCount "84"]
[EventDate "2016.01.16"]
[EventType "team-swiss (rapid)"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 170 Extra"]
[Source "ChessBase"]
[SourceDate "2016.02.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.02.25"]
[SourceQuality "1"]
[WhiteTeam "Poznan PP"]
[BlackTeam "Wroclaw PWr"]
[WhiteTeamCountry "POL"]
[BlackTeamCountry "POL"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nge7 4. c3 g6 5. d4 exd4 6. cxd4 Bg7 7. 0-0 a6 8. Ba4 b5 9. Bb3 d6 10. h3 0-0 11. Nc3 Bb7 12. Bg5 h6 13. Bh4 Na5 14. Bc2 g5 15. Bg3 f5 16. Bh2 b4 17. Ne2 fxe4 18. Nd2 d5 19. Nb3 Nxb3 20. Bxb3 Nf5 21. Qd2 a5 22. Be5 Bxe5 23. dxe5 c6 24. a3 Qe7 25. Nd4 a4 26. Bd1 Nxd4 27. Qxd4 c5 28. Qd2 bxa3 29. Rxa3 Qxe5 30. Rxa4 Rxa4 31. Bxa4 d4 32. Re1 Qf4 33. Qc2 Qf5 34. Rc1 e3 35. fxe3 d3 36. Qd2 c4 37. Ra1 Bd5 38. Rc1 h5 39. Rb1 g4 40. hxg4 hxg4 41. Qe1 d2 42. Qf1 Qe4 0-1

[Event "POL-ch U26 rapid"]
[Site "Hucisko"]
[Date "2016.01.15"]
[Round "4"]
[White "Dragun, Kamil"]
[Black "Siwiec, Arkadiusz"]
[Result "1-0"]
[ECO "D10"]
[WhiteElo "2561"]
[BlackElo "2170"]
[PlyCount "45"]
[EventDate "2016.01.15"]
[EventType "swiss (rapid)"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 170 Extra"]
[Source "ChessBase"]
[SourceDate "2016.02.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.02.25"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. cxd5 cxd5 5. Bf4 a6 6. e3 Qb6 7. Bd3 Qxb2 8. Nge2 Qb6 9. 0-0 e6 10. Rb1 Qd8 11. Na4 b5 12. Qc2 bxa4 13. Bxb8 Bd7 14. Bc7 Qc8 15. Rb6 Be7 16. Rfb1 0-0 17. Rb8 Rxb8 18. Rxb8 Qxb8 19. Bxb8 Rxb8 20. Bxa6 a3 21. Nc1 Rb2 22. Qc7 Ba4 23. Qxe7 1-0

[Event "POL-ch U26 rapid"]
[Site "Hucisko"]
[Date "2016.01.15"]
[Round "3"]
[White "Siwiec, Arkadiusz"]
[Black "Tazbir, Marcin"]
[Result "1/2-1/2"]
[ECO "B96"]
[WhiteElo "2170"]
[BlackElo "2524"]
[PlyCount "54"]
[EventDate "2016.01.15"]
[EventType "swiss (rapid)"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 170 Extra"]
[Source "ChessBase"]
[SourceDate "2016.02.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.02.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Nc6 8. e5 h6 9. Bh4 g5 10. fxg5 Nd5 11. Nxd5 exd5 12. exd6 Bxd6 13. Nxc6 bxc6 14. Qd4 Qe7+ 15. Be2 Be5 16. Qa4 Qd6 17. Bg3 Bxg3+ 18. hxg3 Qxg3+ 19. Kf1 Qd6 20. Re1 Be6 21. Rxh6 Rf8 22. c4 Qf4+ 23. Bf3 Kd7 24. b3 Kc7 25. Qa5+ Kb7 26. Qb4+ Kc7 27. Qa5+ Kb7 1/2-1/2

[Event "POL-ch U26"]
[Site "Zabrze"]
[Date "2015.01.11"]
[Round "6"]
[White "Piesik, Piotr"]
[Black "Siwiec, Arkadiusz"]
[Result "1-0"]
[ECO "D77"]
[WhiteElo "2256"]
[BlackElo "2170"]
[PlyCount "111"]
[EventDate "2015.01.10"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. Nf3 Nf6 2. g3 d5 3. Bg2 g6 4. 0-0 Bg7 5. d4 0-0 6. c4 dxc4 7. Na3 c5 8. Nxc4 cxd4 9. Nxd4 a6 10. Bf4 Nfd7 11. Be3 Nf6 12. Nb3 Ng4 13. Bb6 Qxd1 14. Rfxd1 Nc6 15. Nc5 Nge5 16. Ne3 g5 17. Rac1 Ng6 18. Nc4 Nd4 19. Rd2 Ne6 20. Nxb7 Rb8 21. Nba5 Ne5 22. b3 Nxc4 23. Nxc4 Bb7 24. Rcd1 Bxg2 25. Kxg2 Rfc8 26. Be3 h6 27. Rd7 Bf6 28. Nb6 Rc2 29. R1d2 Rxd2 30. Rxd2 Rb7 31. Rd5 Bd4 32. Nc4 Bxe3 33. Nxe3 Kg7 34. Ra5 Nc7 35. Nf5+ Kf6 36. Nxh6 Kg6 37. Ng4 f5 38. Ne5+ Kf6 39. Nd7+ Kg6 40. Ne5+ Kf6 41. Nc4 e6 42. f3 Rb8 43. e4 fxe4 44. fxe4 Rd8 45. Rc5 Nb5 46. e5+ Kf5 47. Nd6+ Nxd6 48. exd6+ Kf6 49. Rc6 a5 50. Ra6 g4 51. Kf2 Rh8 52. Rxa5 Rxh2+ 53. Ke3 Rh1 54. Kf4 Rd1 55. Kxg4 Rxd6 56. Ra4 1-0

[Event "POL-ch U26"]
[Site "Zabrze"]
[Date "2015.01.11"]
[Round "8"]
[White "Siwiec, Arkadiusz"]
[Black "Bebel, Arkadiusz"]
[Result "0-1"]
[ECO "C41"]
[WhiteElo "2170"]
[BlackElo "2307"]
[PlyCount "86"]
[EventDate "2015.01.10"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. Nf3 Nbd7 5. Bc4 Be7 6. 0-0 0-0 7. a4 c6 8. Re1 b6 9. Bg5 a6 10. Qd2 Qc7 11. Rad1 b5 12. Ba2 Rb8 13. Nh4 Nb6 14. axb5 axb5 15. Nf5 Bxf5 16. exf5 exd4 17. Qxd4 d5 18. Rd3 Rfe8 19. Rde3 Kf8 20. Qh4 Nbd7 21. Ne2 Bc5 22. Nd4 Rxe3 23. Bxe3 Re8 24. c3 Re4 25. Qh3 Bxd4 26. cxd4 Qa5 27. Ra1 Qb4 28. Rd1 Qxb2 29. Bb1 Re8 30. Qf3 Kg8 31. h3 Ra8 32. g4 Ra1 33. Bd3 Rxd1+ 34. Qxd1 Nb6 35. g5 Ne4 36. Bxe4 dxe4 37. f6 Nd5 38. Qg4 Qa1+ 39. Kh2 Qa8 40. Qd7 Nxe3 41. fxe3 g6 42. h4 Qb8+ 43. Kh3 b4 0-1

[Event "POL-ch U26"]
[Site "Zabrze"]
[Date "2015.01.10"]
[Round "3"]
[White "Siwiec, Arkadiusz"]
[Black "Kolosowski, Mateusz"]
[Result "0-1"]
[ECO "C79"]
[WhiteElo "2170"]
[BlackElo "2463"]
[PlyCount "118"]
[EventDate "2015.01.10"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. c3 Bd7 6. 0-0 g6 7. d4 Bg7 8. Re1 b5 9. Bb3 Nf6 10. h3 0-0 11. Nbd2 Re8 12. a4 Na5 13. Bc2 exd4 14. cxd4 b4 15. e5 Nd5 16. Ne4 Bf5 17. Bg5 Qd7 18. Qd2 Bxe4 19. Bxe4 c6 20. Bxd5 cxd5 21. Qxb4 Nc4 22. b3 Rab8 23. Qc3 Nb6 24. Rac1 dxe5 25. Nxe5 Qf5 26. Nf3 Re4 27. Be3 Nd7 28. Rb1 Ree8 29. Qa5 Rb6 30. Ne5 Rd6 31. Nxd7 Qxd7 32. Rec1 Qf5 33. b4 Qd3 34. Rd1 Qc3 35. Qc5 Rc6 36. Qxc3 Rxc3 37. Rdc1 Ra3 38. a5 Bf8 39. Rc6 Re6 40. Rc8 Kg7 41. Rd8 Bd6 42. g3 Ra4 43. b5 axb5 44. Rxb5 Bxg3 45. Rdxd5 Bd6 46. Rb6 Bb4 47. Rxe6 fxe6 48. Rd7+ Kf6 49. Rxh7 Rxa5 50. Kg2 Rd5 51. h4 Bc3 52. h5 gxh5 53. Kh3 Kg6 54. Rh6+ Kf7 55. Kh4 Bxd4 56. Rxh5 Bf6+ 57. Kg4 Rd3 58. Kf3 Rd5 59. Ke2 Rxh5 0-1

[Event "POL-ch U26"]
[Site "Zabrze"]
[Date "2015.01.10"]
[Round "5"]
[White "Siwiec, Arkadiusz"]
[Black "Leniart, Arkadiusz"]
[Result "1-0"]
[ECO "C96"]
[WhiteElo "2170"]
[BlackElo "2488"]
[PlyCount "130"]
[EventDate "2015.01.10"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 d6 8. c3 0-0 9. h3 Na5 10. Bc2 c5 11. d4 Nd7 12. Nbd2 exd4 13. cxd4 Nc6 14. d5 Nce5 15. Nxe5 Nxe5 16. f4 Ng6 17. Nf3 Bh4 18. Nxh4 Qxh4 19. Rf1 f5 20. Qf3 Ra7 21. exf5 Bxf5 22. Bxf5 Rxf5 23. g4 Rf8 24. Qg2 Qf6 25. Qf2 Raf7 26. f5 Ne7 27. Bf4 Nxd5 28. Bg3 Re8 29. Rfd1 Ne3 30. Rxd6 Qe7 31. Re1 Qe4 32. Bf4 Rfe7 33. Rxe3 Qb1+ 34. Kh2 Rxe3 35. Bxe3 Qe4 36. Bg5 Qc4 37. Rd8 Rxd8 38. Bxd8 Qxa2 39. Bb6 Qb3 40. Bxc5 a5 41. Qd2 h6 42. f6 gxf6 43. Bb6 a4 44. Ba5 a3 45. bxa3 Qxa3 46. Bc3 Qe7 47. Bb2 Kg7 48. h4 Kg8 49. Kh3 Qe6 50. Kg3 Qb3+ 51. Qc3 Qe6 52. Qxf6 Qe1+ 53. Qf2 Qxf2+ 54. Kxf2 h5 55. gxh5 Kh7 56. Bc1 b4 57. Ke2 b3 58. Kd3 b2 59. Bxb2 Kh6 60. Bf6 Kxh5 61. Bg5 Kg6 62. Ke4 Kh5 63. Kf3 Kg6 64. Kg4 Kg7 65. h5 Kh7 1-0

[Event "BL2-Nord 1415"]
[Site "Germany"]
[Date "2014.11.09"]
[Round "3.8"]
[White "Hoffmann, Udo"]
[Black "Siwiec, Arkadiusz"]
[Result "0-1"]
[ECO "B20"]
[WhiteElo "2234"]
[BlackElo "2158"]
[PlyCount "57"]
[EventDate "2014.09.21"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 166 Extra"]
[Source "ChessBase"]
[SourceDate "2015.06.18"]
[SourceVersion "1"]
[SourceVersionDate "2015.06.18"]
[SourceQuality "1"]
[WhiteTeam "Berlin SF II"]
[BlackTeam "Ruedersdorf"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 c5 2. b3 d5 3. exd5 Qxd5 4. Nc3 Qd8 5. Bb2 Nf6 6. Nf3 e6 7. Bb5+ Nbd7 8. Qe2 Be7 9. d4 0-0 10. 0-0-0 cxd4 11. Nxd4 Qa5 12. a4 a6 13. Bd3 Ne5 14. f4 Nxd3+ 15. Rxd3 Qh5 16. Qxh5 Nxh5 17. g3 Nf6 18. Rhd1 Ng4 19. R1d2 e5 20. Nf3 Bc5 21. h3 Nf2 22. Nxe5 Nxd3+ 23. Rxd3 Bxh3 24. g4 Bf1 25. Rg3 Rfd8 26. Ne4 Bd4 27. Ba3 f6 28. Nd3 Bxd3 29. Rxd3 0-1

[Event "Poznan op 22nd"]
[Site "Poznan"]
[Date "2014.08.16"]
[Round "9"]
[White "Siwiec, Arkadiusz"]
[Black "Jedynak, January"]
[Result "1-0"]
[ECO "C02"]
[WhiteElo "2199"]
[BlackElo "1613"]
[PlyCount "55"]
[EventDate "2014.08.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 161 Extra"]
[Source "ChessBase"]
[SourceDate "2014.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2014.08.29"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Qb6 6. a3 cxd4 7. cxd4 Nh6 8. Bd3 Bd7 9. Bc2 Be7 10. Nc3 Rc8 11. Ra2 Ng8 12. 0-0 f6 13. Re1 a5 14. Nxd5 exd5 15. e6 Bxe6 16. Rxe6 Kf7 17. Re1 Bd6 18. Qe2 Qc7 19. Qe6+ Kf8 20. Qxd5 Nge7 21. Qb3 Bxh2+ 22. Kh1 Bd6 23. Bd3 h5 24. Ra1 h4 25. Qe6 Rd8 26. Bc4 Ng6 27. Ng5 Nxd4 28. Nh7+ 1-0

[Event "Poznan op 22nd"]
[Site "Poznan"]
[Date "2014.08.15"]
[Round "8"]
[White "Rozumek, Krzysztof"]
[Black "Siwiec, Arkadiusz"]
[Result "1-0"]
[ECO "A48"]
[WhiteElo "1907"]
[BlackElo "2199"]
[PlyCount "77"]
[EventDate "2014.08.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 161 Extra"]
[Source "ChessBase"]
[SourceDate "2014.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2014.08.29"]
[SourceQuality "1"]

1. h3 Nf6 2. c3 g6 3. d4 Bg7 4. Bf4 b6 5. Nf3 d6 6. Nbd2 Bb7 7. e3 Nbd7 8. Bc4 0-0 9. 0-0 Ne4 10. Nxe4 Bxe4 11. Ng5 Bb7 12. Qb3 Qe8 13. Bd5 c6 14. Bf3 e5 15. Bg3 d5 16. h4 Qe7 17. dxe5 Nxe5 18. Bxe5 Bxe5 19. g3 h6 20. Nh3 Bc8 21. Nf4 Bxf4 22. exf4 Be6 23. Qc2 h5 24. Rfe1 Qf6 25. Re5 Rfd8 26. Rae1 Rd6 27. Qe2 Rad8 28. Bxh5 gxh5 29. Qxh5 Bd7 30. Rg5+ Kf8 31. Qh7 Re6 32. Rxe6 Qxe6 33. Qg7+ Ke7 34. Re5 c5 35. h5 d4 36. f5 Qxe5 37. Qxe5+ Be6 38. cxd4 cxd4 39. fxe6 1-0

[Event "Poznan op 22nd"]
[Site "Poznan"]
[Date "2014.08.14"]
[Round "7"]
[White "Siwiec, Arkadiusz"]
[Black "Wittig, Zenon"]
[Result "1-0"]
[ECO "C87"]
[WhiteElo "2199"]
[BlackElo "1529"]
[PlyCount "71"]
[EventDate "2014.08.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 161 Extra"]
[Source "ChessBase"]
[SourceDate "2014.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2014.08.29"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. c3 Bd7 6. 0-0 Nf6 7. Re1 Be7 8. d4 0-0 9. h3 Re8 10. Nbd2 h6 11. Nf1 Bf8 12. Ng3 g6 13. Bc2 Bg7 14. Be3 Kh7 15. Qd2 Re7 16. Rad1 Qf8 17. Nh2 Rae8 18. f4 exf4 19. Bxf4 h5 20. Nf3 Bh6 21. Rf1 Bxf4 22. Qxf4 Kg7 23. e5 dxe5 24. Nxe5 Nh7 25. Nxh5+ gxh5 26. Nxd7 Rxd7 27. Qf5 Nf6 28. Qxf6+ Kg8 29. Rf5 Ne7 30. Rg5+ Ng6 31. Bxg6 fxg6 32. Qxg6+ Rg7 33. Qxh5 Qe7 34. Rxg7+ Kxg7 35. Qe5+ Qxe5 36. dxe5 1-0

[Event "Poznan op 22nd"]
[Site "Poznan"]
[Date "2014.08.13"]
[Round "6"]
[White "Glatty, Zbigniew"]
[Black "Siwiec, Arkadiusz"]
[Result "1-0"]
[ECO "B73"]
[WhiteElo "1883"]
[BlackElo "2199"]
[PlyCount "71"]
[EventDate "2014.08.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 161 Extra"]
[Source "ChessBase"]
[SourceDate "2014.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2014.08.29"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Be2 g6 7. 0-0 Bg7 8. Be3 0-0 9. Qd2 Ng4 10. Bxg4 Bxg4 11. f3 Bd7 12. Rad1 Re8 13. Kh1 Rc8 14. Nxc6 bxc6 15. Bd4 Bf8 16. Be3 Qa5 17. Bh6 Bxh6 18. Qxh6 Rb8 19. Rb1 Be6 20. a3 Rb7 21. Qe3 Reb8 22. Qc1 Bc4 23. Re1 d5 24. exd5 cxd5 25. b4 Qa6 26. Nd1 Rc8 27. Ne3 d4 28. Nxc4 Rxc4 29. Qb2 Rbc7 30. Rbd1 Qd6 31. Re4 e5 32. f4 exf4 33. Rexd4 Rxc2 34. Qa1 Qf6 35. Rd8+ Kg7 36. Rg8+ 1-0

[Event "Poznan op 22nd"]
[Site "Poznan"]
[Date "2014.08.12"]
[Round "5"]
[White "Siwiec, Arkadiusz"]
[Black "Andrzejewska, Anna"]
[Result "1/2-1/2"]
[ECO "C78"]
[WhiteElo "2199"]
[BlackElo "1988"]
[PlyCount "62"]
[EventDate "2014.08.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 161 Extra"]
[Source "ChessBase"]
[SourceDate "2014.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2014.08.29"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. d3 b5 6. Bb3 Bc5 7. 0-0 d6 8. a4 Rb8 9. h3 h6 10. axb5 axb5 11. c3 0-0 12. Re1 Re8 13. Nbd2 Be6 14. Bxe6 Rxe6 15. Nb3 Bb6 16. Be3 Bxe3 17. Rxe3 d5 18. Nc5 Rd6 19. Qc2 b4 20. Ree1 bxc3 21. Qxc3 d4 22. Qa3 Nd7 23. b4 Nxb4 24. Nxd7 Qxd7 25. Nxe5 Qb5 26. Reb1 Ra6 27. Qxa6 Qxa6 28. Rxa6 Nxa6 29. Rxb8+ Nxb8 30. f4 f6 31. Nf3 c5 1/2-1/2

[Event "Poznan op 22nd"]
[Site "Poznan"]
[Date "2014.08.11"]
[Round "4"]
[White "Hemmerling, Jaroslaw"]
[Black "Siwiec, Arkadiusz"]
[Result "1/2-1/2"]
[ECO "B61"]
[WhiteElo "1910"]
[BlackElo "2199"]
[PlyCount "86"]
[EventDate "2014.08.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 161 Extra"]
[Source "ChessBase"]
[SourceDate "2014.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2014.08.29"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 Bd7 7. Qd2 Rc8 8. 0-0-0 Nxd4 9. Qxd4 Qa5 10. f4 Rxc3 11. bxc3 e5 12. Qb4 Qxb4 13. cxb4 Nxe4 14. Re1 f5 15. Bd3 Nxg5 16. fxg5 g6 17. h4 Be6 18. h5 Rg8 19. hxg6 hxg6 20. Rh7 Be7 21. Kb1 e4 22. Bb5+ Kd8 23. Ba4 a6 24. Bb3 Kd7 25. Reh1 Bxb3 26. axb3 d5 27. c3 Rc8 28. Rg7 Rc6 29. Rhh7 Re6 30. Kc2 e3 31. Kd3 f4 32. Ke2 Kd6 33. Rh6 Bf8 34. Rgxg6 Bxh6 35. Rxh6 Ke5 36. g3 fxg3 37. Kxe3 Kf5+ 38. Rxe6 Kxe6 39. Kf3 Kf5 40. Kxg3 Kxg5 41. Kf3 Kf5 42. Ke3 Ke5 43. Kd3 b6 1/2-1/2

[Event "Poznan op 22nd"]
[Site "Poznan"]
[Date "2014.08.10"]
[Round "2"]
[White "Chojnacki, Tomasz"]
[Black "Siwiec, Arkadiusz"]
[Result "0-1"]
[ECO "B57"]
[WhiteElo "1904"]
[BlackElo "2199"]
[PlyCount "50"]
[EventDate "2014.08.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 161 Extra"]
[Source "ChessBase"]
[SourceDate "2014.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2014.08.29"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bc4 Qb6 7. Nxc6 bxc6 8. 0-0 g6 9. Qe1 Nd7 10. Be3 Qxb2 11. Bd4 e5 12. Nb5 exd4 13. Nc7+ Ke7 14. Nxa8 Qb8 15. e5 d5 16. Qd2 Qxa8 17. Qxd4 dxc4 18. Rfe1 Bg7 19. Qh4+ Ke8 20. e6 Nf6 21. exf7+ Kxf7 22. Qxc4+ Nd5 23. Rad1 Rf8 24. Qe4 Kg8 25. g4 Qb8 0-1

[Event "Poznan op 22nd"]
[Site "Poznan"]
[Date "2014.08.10"]
[Round "3"]
[White "Siwiec, Arkadiusz"]
[Black "Tazbir, Marcin"]
[Result "0-1"]
[ECO "B60"]
[WhiteElo "2199"]
[BlackElo "2531"]
[PlyCount "104"]
[EventDate "2014.08.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 161 Extra"]
[Source "ChessBase"]
[SourceDate "2014.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2014.08.29"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bg5 Bd7 7. Be2 e6 8. Bxf6 gxf6 9. f4 Qb6 10. Nb3 a6 11. Qd3 h5 12. 0-0-0 0-0-0 13. Kb1 h4 14. Rhf1 Kb8 15. Bg4 Qc7 16. Qh3 Be7 17. f5 Qc8 18. Nd4 Nxd4 19. Rxd4 Qc5 20. Rfd1 Qe5 21. Ne2 Bb5 22. Ng1 d5 23. Nf3 Qc7 24. exd5 e5 25. R4d2 e4 26. Nd4 Rxd5 27. Nxb5 Rxb5 28. Be2 Rb6 29. Qe3 Bd6 30. Qxe4 Qc3 31. Qd4 Rxb2+ 32. Kc1 Be5 33. Qxc3 Bxc3 34. Rd3 Be5 35. Rd8+ Rxd8 36. Rxd8+ Kc7 37. Rh8 Rb4 38. c4 Rb2 39. Bf3 Rxa2 40. Rxh4 b6 41. Rh7 Kd6 42. Rxf7 Kc5 43. Rd7 Bxh2 44. g4 Rf2 45. Bd5 Bf4+ 46. Kb1 Kb4 47. Rb7 Be3 48. Rf7 Ka3 49. Be4 Rb2+ 50. Ka1 Bd4 51. Rd7 Bc3 52. Rd3 Rb3+ 0-1

[Event "Poznan op 22nd"]
[Site "Poznan"]
[Date "2014.08.09"]
[Round "1"]
[White "Siwiec, Arkadiusz"]
[Black "Opolski, Wojciech"]
[Result "1-0"]
[ECO "C87"]
[WhiteElo "2199"]
[BlackElo "1608"]
[PlyCount "43"]
[EventDate "2014.08.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 161 Extra"]
[Source "ChessBase"]
[SourceDate "2014.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2014.08.29"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 0-0 7. Bxc6 dxc6 8. Nxe5 c5 9. d3 Bd6 10. Nf3 Be7 11. b3 Bg4 12. Bb2 Qd7 13. Ne5 Bxd1 14. Nxd7 Bxc2 15. Nxf8 Bxd3 16. e5 Nh5 17. Nd7 Bb5 18. e6 fxe6 19. Ne5 Re8 20. Nc3 Bf6 21. a4 Bxe5 22. Rxe5 1-0

[Event "Oberliga Nord O 1314"]
[Site "Germany"]
[Date "2014.04.06"]
[Round "9.8"]
[White "Cech, Tim"]
[Black "Siwiec, Arkadiusz"]
[Result "0-1"]
[ECO "A49"]
[WhiteElo "1799"]
[BlackElo "2188"]
[PlyCount "66"]
[EventDate "2013.10.13"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]
[WhiteTeam "Potsdam USV"]
[BlackTeam "Ruedersdorf"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. d4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 0-0 5. 0-0 c5 6. c3 Qc7 7. Re1 d6 8. dxc5 Qxc5 9. e4 Nc6 10. Na3 Rb8 11. Be3 Qh5 12. Qd3 Ng4 13. Bd4 Nce5 14. Bxe5 Nxe5 15. Nxe5 Qxe5 16. Nc2 Qc5 17. Ne3 Rd8 18. Nd5 Kf8 19. Qf3 e6 20. Nf6 Ke7 21. e5 dxe5 22. Nxh7 f6 23. Re4 Bd7 24. Rh4 Bc6 25. Qg4 Kf7 26. Qh3 Bxg2 27. Kxg2 Rd2 28. Rf1 Rxb2 29. g4 Rd8 30. g5 f5 31. Nf6 Rdd2 32. Qf3 Bxf6 33. gxf6 Qd5 0-1

[Event "Oberliga Nord O 1314"]
[Site "Germany"]
[Date "2014.03.16"]
[Round "8.8"]
[White "Siwiec, Arkadiusz"]
[Black "Lagunow, Raphael"]
[Result "1-0"]
[ECO "B70"]
[WhiteElo "2188"]
[BlackElo "1969"]
[PlyCount "51"]
[EventDate "2013.10.13"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]
[WhiteTeam "Ruedersdorf"]
[BlackTeam "Steglitz Wilmersdorf"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Nde2 Nf6 7. g3 0-0 8. Bg2 d6 9. 0-0 Bd7 10. h3 a6 11. Be3 Rc8 12. Nd5 Nxd5 13. exd5 Ne5 14. Bd4 Bb5 15. Re1 Bxe2 16. Rxe2 Re8 17. c3 b5 18. Re4 Nd7 19. Bxg7 Kxg7 20. Rb4 Nc5 21. Qd2 Qd7 22. Re1 Qf5 23. Rf4 Qd3 24. Qc1 g5 25. Rfe4 h6 26. R1e3 1-0

[Event "Oberliga Nord O 1314"]
[Site "Germany"]
[Date "2013.12.15"]
[Round "4.8"]
[White "Stark, Ingo"]
[Black "Siwiec, Arkadiusz"]
[Result "0-1"]
[ECO "B56"]
[WhiteElo "2125"]
[BlackElo "2188"]
[PlyCount "116"]
[EventDate "2013.10.13"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]
[WhiteTeam "Oberschoeneweide"]
[BlackTeam "Ruedersdorf"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. h3 e5 7. Nde2 Be6 8. f4 Nh5 9. Qd3 exf4 10. Bxf4 Nxf4 11. Nxf4 Be7 12. 0-0-0 0-0 13. Ncd5 Bg5 14. Kb1 Rc8 15. Be2 Bxf4 16. Nxf4 Bxa2+ 17. Ka1 Ne5 18. Qa3 Bc4 19. Nd3 Nxd3 20. Bxd3 Rc5 21. Kb1 Ra5 22. Qb4 Ba2+ 23. Kc1 Qg5+ 24. Rd2 Bc4 25. Kb1 Bxd3 26. Rxd3 Qxg2 27. Rhd1 b6 28. Rxd6 Rc5 29. Qb3 Qxe4 30. Rd7 Qe2 31. R1d2 Qe5 32. Qb4 h6 33. Rxa7 Rfc8 34. c3 Rb5 35. Qg4 Qxc3 36. Qd7 Qc1+ 37. Ka2 Qc4+ 38. Ka1 Qf1+ 39. Ka2 Rc1 40. Qd8+ Kh7 41. Qd3+ Qxd3 42. Rxd3 Ra5+ 43. Rxa5 bxa5 44. Rd5 Rh1 45. Rxa5 Rxh3 46. b4 g5 47. b5 Re3 48. b6 Re8 49. Kb3 Rb8 50. Rb5 Kg6 51. Kc4 h5 52. Kd4 h4 53. Ke3 Rb7 54. Kf3 f5 55. Ke3 f4+ 56. Kf3 Kh5 57. Rb1 h3 58. Rb5 Kh4 0-1

[Event "Oberliga Nord O 1314"]
[Site "Germany"]
[Date "2013.11.20"]
[Round "3.8"]
[White "Siwiec, Arkadiusz"]
[Black "Puhlmann, Rainer"]
[Result "1/2-1/2"]
[ECO "C10"]
[WhiteElo "2188"]
[BlackElo "2121"]
[PlyCount "65"]
[EventDate "2013.10.13"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]
[WhiteTeam "Ruedersdorf"]
[BlackTeam "Potsdam Empor"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 e6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nd7 5. Nf3 Ngf6 6. Bd3 Nxe4 7. Bxe4 Nf6 8. Bd3 Be7 9. 0-0 0-0 10. Re1 b6 11. Bf4 Bb7 12. c3 c5 13. dxc5 Bxc5 14. Qe2 Qd5 15. Rad1 Qh5 16. Ne5 Qxe2 17. Rxe2 Nd5 18. Bg3 Rfd8 19. Red2 Be7 20. Be4 b5 21. b3 f6 22. c4 bxc4 23. bxc4 fxe5 24. cxd5 Rac8 25. h3 Bg5 26. Rd3 exd5 27. Bxd5+ Bxd5 28. Rxd5 e4 29. Bd6 Rc1 30. Rxc1 Bxc1 31. Rd4 e3 32. Kf1 exf2 33. Bc5 1/2-1/2

[Event "UKR-POL U26"]
[Site "Lvov"]
[Date "2013.09.28"]
[Round "5"]
[White "Goganov, Ivan"]
[Black "Siwiec, Arkadiusz"]
[Result "0-1"]
[ECO "B50"]
[WhiteElo "1990"]
[BlackElo "2181"]
[PlyCount "48"]
[EventDate "2013.09.26"]
[EventType "team-swiss"]
[EventRounds "5"]
[EventCountry "UKR"]
[SourceTitle "CBM 156 Extra"]
[Source "ChessBase"]
[SourceDate "2013.10.22"]
[SourceVersion "1"]
[SourceVersionDate "2013.10.22"]
[SourceQuality "1"]
[WhiteTeam "Donetsk Univ"]
[BlackTeam "Poznan Technology Univ"]
[WhiteTeamCountry "UKR"]
[BlackTeamCountry "POL"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Nxd7 5. c3 Ngf6 6. Qe2 e6 7. d4 Be7 8. Bg5 0-0 9. Nbd2 cxd4 10. cxd4 d5 11. e5 Ne4 12. Bxe7 Qxe7 13. 0-0 Nxd2 14. Nxd2 Qb4 15. Qd3 Rfc8 16. Nb3 Rc7 17. f4 g6 18. g4 Rac8 19. Rf2 Qe7 20. Raf1 b6 21. Qd2 a5 22. Kh1 Qh4 23. Rg1 a4 24. Nc1 Rxc1 0-1

[Event "UKR-POL U26"]
[Site "Lvov"]
[Date "2013.09.28"]
[Round "4"]
[White "Soroka, Danylo"]
[Black "Siwiec, Arkadiusz"]
[Result "1-0"]
[ECO "D90"]
[WhiteElo "2207"]
[BlackElo "2181"]
[PlyCount "75"]
[EventDate "2013.09.26"]
[EventType "team-swiss"]
[EventRounds "5"]
[EventCountry "UKR"]
[SourceTitle "CBM 156 Extra"]
[Source "ChessBase"]
[SourceDate "2013.10.22"]
[SourceVersion "1"]
[SourceVersionDate "2013.10.22"]
[SourceQuality "1"]
[WhiteTeam "Lvov Polytechnic Univ"]
[BlackTeam "Poznan Technology Univ"]
[WhiteTeamCountry "UKR"]
[BlackTeamCountry "POL"]

1. d4 d5 2. Nf3 Nf6 3. c4 c6 4. Nc3 g6 5. Bf4 dxc4 6. a4 Bf5 7. e3 Bd3 8. Bxd3 cxd3 9. Qxd3 Bg7 10. b4 0-0 11. 0-0 Nd5 12. Nxd5 Qxd5 13. Rac1 Nd7 14. e4 Qa2 15. a5 Qa4 16. Qc4 Rac8 17. Ng5 Qb5 18. e5 Qxc4 19. Rxc4 e6 20. Ne4 Rb8 21. b5 Rbd8 22. bxc6 bxc6 23. Rxc6 Nb8 24. Rc4 Rd5 25. Bd2 Rfd8 26. Bc3 R5d7 27. g3 Na6 28. Rb1 h6 29. Rc6 Nb8 30. Rc4 Na6 31. Kg2 Nc7 32. Nc5 Re7 33. a6 Nd5 34. Ba5 Ra8 35. Rb7 Bf8 36. Nd7 Kg7 37. Rc2 f6 38. exf6+ 1-0

[Event "UKR-POL U26"]
[Site "Lvov"]
[Date "2013.09.27"]
[Round "3"]
[White "Siwiec, Arkadiusz"]
[Black "Sergienko, Vladislav"]
[Result "1-0"]
[ECO "B70"]
[WhiteElo "2181"]
[BlackElo "2192"]
[PlyCount "109"]
[EventDate "2013.09.26"]
[EventType "team-swiss"]
[EventRounds "5"]
[EventCountry "UKR"]
[SourceTitle "CBM 156 Extra"]
[Source "ChessBase"]
[SourceDate "2013.10.22"]
[SourceVersion "1"]
[SourceVersionDate "2013.10.22"]
[SourceQuality "1"]
[WhiteTeam "Poznan Technology Univ"]
[BlackTeam "Shevchenko Univ"]
[WhiteTeamCountry "POL"]
[BlackTeamCountry "UKR"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Nde2 Nf6 7. g3 0-0 8. Bg2 d6 9. 0-0 Bd7 10. h3 Rc8 11. Be3 b6 12. Nd5 Ne8 13. c3 e6 14. Ndf4 Qc7 15. b3 Nf6 16. a4 Rfd8 17. Qd2 Na5 18. Qc2 Bc6 19. Nd4 Bb7 20. Nfxe6 fxe6 21. Nxe6 Qe7 22. Nxd8 Qxd8 23. b4 Nc6 24. b5 Na5 25. Bd4 Qe7 26. Rfe1 Nd7 27. Rad1 Ne5 28. Qa2+ Qf7 29. Qxf7+ Nxf7 30. f4 Nc4 31. Bf1 Bf8 32. h4 Nd8 33. e5 dxe5 34. fxe5 Ne6 35. Bf2 Na5 36. Bh3 Re8 37. Bxe6+ Rxe6 38. Rd7 Be7 39. Rc7 Kf8 40. c4 Ke8 41. c5 Kd8 42. cxb6 axb6 43. Rc3 Ke8 44. Rd1 Bd8 45. Rcd3 Be7 46. Rc3 Bd8 47. Be3 h5 48. Kf2 Be7 49. Rc7 Be4 50. Rdd7 Bd8 51. Ra7 Nc4 52. Rh7 Be7 53. Rh8+ Kf7 54. Bg5 Kg7 55. Re8 1-0

[Event "UKR-POL U26"]
[Site "Lvov"]
[Date "2013.09.26"]
[Round "1"]
[White "Siwiec, Arkadiusz"]
[Black "Demidiukov, Evgeniy"]
[Result "1-0"]
[ECO "C78"]
[WhiteElo "2181"]
[BlackElo "2277"]
[PlyCount "93"]
[EventDate "2013.09.26"]
[EventType "team-swiss"]
[EventRounds "5"]
[EventCountry "UKR"]
[SourceTitle "CBM 156 Extra"]
[Source "ChessBase"]
[SourceDate "2013.10.22"]
[SourceVersion "1"]
[SourceVersionDate "2013.10.22"]
[SourceQuality "1"]
[WhiteTeam "Poznan Technology Univ"]
[BlackTeam "Odessa Civil Engineering"]
[WhiteTeamCountry "POL"]
[BlackTeamCountry "UKR"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 b5 6. Bb3 Bb7 7. Re1 Bc5 8. c3 d6 9. d4 Bb6 10. a4 h6 11. axb5 axb5 12. Rxa8 Qxa8 13. Na3 0-0 14. Nxb5 Na5 15. Bc2 exd4 16. Nfxd4 Bxe4 17. Bxe4 Nxe4 18. Bxh6 gxh6 19. Qg4+ Ng5 20. h4 Qd5 21. hxg5 Qxg5 22. Qh3 Nc4 23. Nf5 Kh7 24. Nxh6 Qxh6 25. Qd3+ Kg7 26. Qxc4 Qd2 27. Qg4+ Kh8 28. Qh4+ Kg7 29. Qg3+ Kf6 30. Qh4+ Qg5 31. Qxg5+ Kxg5 32. Na3 Ra8 33. Nc4 Kf6 34. Nxb6 cxb6 35. Re4 d5 36. Rb4 Ra6 37. Kh2 Ke5 38. Kg3 Kd6 39. Kf4 Kc5 40. Ke5 b5 41. Kf4 Re6 42. Kf3 Re7 43. g4 Kc6 44. g5 Re5 45. Kg4 Kc5 46. f4 Re1 47. Kf5 1-0

[Event "UKR-POL U26"]
[Site "Lvov"]
[Date "2013.09.26"]
[Round "2"]
[White "Siwiec, Arkadiusz"]
[Black "Mazurchak, Bogdan"]
[Result "0-1"]
[ECO "B76"]
[WhiteElo "2181"]
[BlackElo "2209"]
[PlyCount "92"]
[EventDate "2013.09.26"]
[EventType "team-swiss"]
[EventRounds "5"]
[EventCountry "UKR"]
[SourceTitle "CBM 156 Extra"]
[Source "ChessBase"]
[SourceDate "2013.10.22"]
[SourceVersion "1"]
[SourceVersionDate "2013.10.22"]
[SourceQuality "1"]
[WhiteTeam "Poznan Technology Univ"]
[BlackTeam "Ternopol Economic Univ"]
[WhiteTeamCountry "POL"]
[BlackTeamCountry "UKR"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 0-0 8. Qd2 Nc6 9. 0-0-0 d5 10. exd5 Nxd5 11. Nxc6 bxc6 12. Bd4 e5 13. Bc5 Be6 14. Ne4 Re8 15. g4 h6 16. h4 Qc7 17. g5 h5 18. Bc4 Red8 19. Qe1 Nf4 20. Bxe6 Rxd1+ 21. Kxd1 Rd8+ 22. Kc1 Nxe6 23. Qc3 Rd5 24. Bf2 Nd4 25. Re1 Qd7 26. b3 a5 27. a4 Kh8 28. Nf6 Bxf6 29. gxf6 Qd6 30. Bxd4 exd4 31. Qd3 Qxf6 32. Re4 Kg7 33. Kd2 Qd6 34. Qa6 c5 35. Qf1 Qh2+ 36. Qe2 Qg3 37. Qf1 Rf5 38. Ke2 Re5 39. Rxe5 Qxe5+ 40. Kd1 Qg3 41. Qh1 Qf2 42. Kc1 Qe3+ 43. Kb1 d3 44. cxd3 Qxd3+ 45. Ka2 c4 46. Qa1+ Kg8 0-1

[Event "Oberliga Nord O 1213"]
[Site "Germany"]
[Date "2013.04.14"]
[Round "9.6"]
[White "Siwiec, Arkadiusz"]
[Black "Koepcke, Klaus Peter"]
[Result "1/2-1/2"]
[ECO "B99"]
[WhiteElo "2186"]
[BlackElo "2216"]
[PlyCount "81"]
[EventDate "2012.10.17"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]
[WhiteTeam "Ruedersdorf"]
[BlackTeam "Greifswald"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 Qc7 9. 0-0-0 Nbd7 10. Bd3 h6 11. Qh3 Nc5 12. f5 Qa5 13. Bd2 e5 14. Nde2 Qc7 15. Qf3 b5 16. Nd5 Nxd5 17. exd5 Nxd3+ 18. Qxd3 Bb7 19. Kb1 Rc8 20. Nc3 Qc4 21. Qxc4 Rxc4 22. a3 0-0 23. Rhe1 Rfc8 24. g3 R8c5 25. Be3 Rc8 26. Re2 b4 27. axb4 Rxb4 28. Kc1 a5 29. Ree1 a4 30. Nb1 Bf6 31. Bd2 Rd4 32. Be3 Rdc4 33. Na3 Rb4 34. c3 Rb3 35. Kc2 Ba6 36. Bc1 e4 37. Rxe4 Rxa3 38. bxa3 Rxc3+ 39. Kd2 Rd3+ 40. Ke1 Rf3 41. Kd2 1/2-1/2

[Event "Oberliga Nord O 1213"]
[Site "Germany"]
[Date "2013.03.17"]
[Round "8.8"]
[White "Stahr, Ralf Peter"]
[Black "Siwiec, Arkadiusz"]
[Result "0-1"]
[ECO "A55"]
[WhiteElo "2138"]
[BlackElo "2186"]
[PlyCount "90"]
[EventDate "2012.10.17"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]
[WhiteTeam "Cottbus Lokomotive"]
[BlackTeam "Ruedersdorf"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. c4 Nf6 2. Nc3 c6 3. e4 e5 4. Nf3 d6 5. d4 Nbd7 6. Be2 Be7 7. 0-0 0-0 8. h3 Re8 9. d5 Nc5 10. Qc2 a5 11. Be3 Nfd7 12. Rad1 Qc7 13. b3 Na6 14. Qd2 Ndc5 15. Bd3 Rb8 16. Bc2 Rd8 17. a3 Bd7 18. Ne2 Be8 19. Ng3 Bf8 20. Nf5 b5 21. Rb1 a4 22. b4 Nb3 23. Bxb3 axb3 24. Rfc1 bxc4 25. Rxc4 Qb7 26. Rxb3 Nc5 27. Rbc3 cxd5 28. exd5 Na4 29. Rc7 Qb5 30. Rc1 Bd7 31. N3h4 Nb6 32. Bh6 Bxf5 33. Nxf5 gxh6 34. Nxh6+ Bxh6 35. Qxh6 Nxd5 36. Qg5+ Kf8 37. Qh6+ Ke8 38. Qxh7 Nxc7 39. Rxc7 Rd7 40. Rxd7 Kxd7 41. Qxf7+ Kc6 42. Qf3+ Qd5 43. Qc3+ Kb7 44. f3 Qd1+ 45. Kh2 Qe2 0-1

[Event "Oberliga Nord O 1213"]
[Site "Germany"]
[Date "2013.02.24"]
[Round "7.8"]
[White "Siwiec, Arkadiusz"]
[Black "Biemann, Helge"]
[Result "1-0"]
[ECO "C18"]
[WhiteElo "2186"]
[BlackElo "1994"]
[PlyCount "57"]
[EventDate "2012.10.17"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]
[WhiteTeam "Ruedersdorf"]
[BlackTeam "Neuruppin"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Bxc3+ 6. bxc3 Ne7 7. Qg4 0-0 8. Bd3 f5 9. exf6 Rxf6 10. Bg5 Rf7 11. Qh4 h6 12. Bd2 Nbc6 13. Nf3 Qf8 14. Qh5 c4 15. Be2 e5 16. dxe5 Rf5 17. Qh4 Nxe5 18. Nd4 Rf6 19. Qg3 N5c6 20. Bf3 Nxd4 21. cxd4 Bf5 22. 0-0 Bxc2 23. Rfe1 Rd8 24. Bb4 Rd7 25. Bxd5+ Kh7 26. Bxc4 Rg6 27. Qc3 Qf5 28. Bxe7 b5 29. Bf1 1-0

[Event "Oberliga Nord O 1213"]
[Site "Germany"]
[Date "2013.02.03"]
[Round "6.8"]
[White "Lorenz, Joerg"]
[Black "Siwiec, Arkadiusz"]
[Result "1-0"]
[ECO "B26"]
[WhiteElo "2148"]
[BlackElo "2186"]
[PlyCount "79"]
[EventDate "2012.10.17"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]
[WhiteTeam "Oberschoeneweide"]
[BlackTeam "Ruedersdorf"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 c5 2. Nc3 d6 3. g3 Nc6 4. Bg2 g6 5. d3 Bg7 6. Be3 e6 7. Qd2 Rb8 8. Nge2 b5 9. 0-0 Nd4 10. Nd1 Nxe2+ 11. Qxe2 Ne7 12. Qd2 0-0 13. Bh6 Bxh6 14. Qxh6 f6 15. Qe3 Qc7 16. c4 f5 17. Nc3 bxc4 18. dxc4 fxe4 19. Nxe4 Nf5 20. Qd2 Bb7 21. f4 Bxe4 22. Bxe4 Nd4 23. b3 a5 24. Qd3 Rb4 25. Rf2 a4 26. bxa4 Qa7 27. g4 Kh8 28. f5 exf5 29. gxf5 gxf5 30. Bd5 Rfb8 31. Kh1 Qb6 32. Rg1 Rb1 33. Rff1 Rxf1 34. Qxf1 Qb2 35. Qg2 Qxg2+ 36. Rxg2 h5 37. a5 Rb1+ 38. Rg1 Rb2 39. a3 f4 40. a6 1-0

