[Event "Warsaw YMCA Autumn-A 220th"]
[Site "Warsaw"]
[Date "2019.12.12"]
[Round "13"]
[White "Matyszkiewicz, Wiktor"]
[Black "Kosny, Marek"]
[Result "1-0"]
[ECO "C42"]
[WhiteElo "1844"]
[BlackElo "1861"]
[PlyCount "57"]
[EventDate "2019.09.20"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "POL"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. Nc3 Nxc3 6. dxc3 Be7 7. Bd3 Bg4 8. Be3 Nd7 9. h3 Bh5 10. g4 Bg6 11. Nd4 Ne5 12. Qe2 Nxd3+ 13. cxd3 h5 14. 0-0-0 Qd7 15. f4 f5 16. Bf2 0-0-0 17. gxf5 Bf7 18. Ne6 Bxe6 19. fxe6 Qa4 20. Kb1 Qxf4 21. Bd4 c5 22. Bxg7 Rhg8 23. Rdf1 Qh4 24. Rhg1 Rde8 25. Qh2 Bg5 26. Qxd6 Rxg7 27. Rf8 Rge7 28. Rxe8+ Rxe8 29. Qd7+ 1-0

[Event "Warsaw YMCA Autumn-A 220th"]
[Site "Warsaw"]
[Date "2019.12.03"]
[Round "12"]
[White "Kosny, Marek"]
[Black "Derylo, Kamil"]
[Result "1-0"]
[ECO "A37"]
[WhiteElo "1861"]
[BlackElo "1999"]
[PlyCount "107"]
[EventDate "2019.09.20"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "POL"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. Nf3 c5 2. c4 g6 3. Nc3 Bg7 4. g3 Nc6 5. Bg2 e5 6. 0-0 Nge7 7. e4 0-0 8. d3 d6 9. Be3 Nd4 10. Qd2 Bg4 11. Ne1 Qd7 12. f3 Bh3 13. Bh6 Bxg2 14. Kxg2 f5 15. Bxg7 Kxg7 16. Nc2 Nec6 17. Ne3 a6 18. Ned5 Qd8 19. Rab1 b5 20. b4 bxc4 21. bxc5 cxd3 22. cxd6 Qxd6 23. Qxd3 Rf7 24. Nb6 Raf8 25. Nc4 Qd8 26. Nd5 fxe4 27. fxe4 Nf3 28. Qc3 Qd7 29. Rbd1 Qe6 30. Nf4 Nh4+ 31. Kg1 Rxf4 32. gxf4 Nd4 33. Rxd4 exd4 34. Qxd4+ Kh6 35. Ne5 Rb8 36. Qf2 Qb6 37. h3 Kh5 38. Kh2 Qb2 39. Nd3 Nf3+ 40. Kg3 Qxf2+ 41. Kxf2 Nd2 42. Re1 Nc4 43. e5 Kh6 44. Rc1 Nb2 45. Ke3 Kg7 46. Rc7+ Kg8 47. e6 Na4 48. Ke4 Nb6 49. Ke5 Rd8 50. Nb4 a5 51. Rc6 Nc8 52. Nd5 h6 53. Rxc8 Rxc8 54. Ne7+ 1-0

[Event "Warsaw YMCA Autumn-A 220th"]
[Site "Warsaw"]
[Date "2019.11.29"]
[Round "11"]
[White "Potocki, Karol"]
[Black "Kosny, Marek"]
[Result "0-1"]
[ECO "D02"]
[WhiteElo "1840"]
[BlackElo "1861"]
[PlyCount "50"]
[EventDate "2019.09.20"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "POL"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. d4 d5 2. Bf4 Nf6 3. e3 Nbd7 4. Nf3 e6 5. Bd3 Be7 6. Ne5 0-0 7. Nd2 Nxe5 8. dxe5 Ne8 9. Qh5 g6 10. Qh6 f6 11. Nf3 Rf7 12. g4 c5 13. c3 d4 14. cxd4 cxd4 15. 0-0-0 Qd5 16. g5 f5 17. Nxd4 Qxa2 18. Bb1 Qa5 19. Bc2 Bd7 20. Kb1 Rc8 21. Qh3 Bf8 22. Qg2 Bc6 23. Nxc6 Rxc6 24. Rd4 Rfc7 25. Rc1 b5 0-1

[Event "Warsaw YMCA Autumn-A 220th"]
[Site "Warsaw"]
[Date "2019.11.08"]
[Round "10"]
[White "Kosny, Marek"]
[Black "Choroszej, Aleksander"]
[Result "0-1"]
[ECO "A37"]
[WhiteElo "1861"]
[BlackElo "2054"]
[PlyCount "84"]
[EventDate "2019.09.20"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "POL"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. Nf3 g6 2. c4 Bg7 3. Nc3 c5 4. g3 Nc6 5. Bg2 e5 6. 0-0 Nge7 7. e4 0-0 8. d3 d6 9. Be3 a6 10. Qd2 Nd4 11. Bh6 Nxf3+ 12. Bxf3 Nc6 13. Bxg7 Kxg7 14. Bg2 Be6 15. h3 Nd4 16. g4 b5 17. b3 bxc4 18. dxc4 g5 19. Ne2 a5 20. Nxd4 cxd4 21. Rfc1 Rc8 22. Bf1 h6 23. a3 Qb6 24. Rab1 Rc7 25. Bd3 Rfc8 26. f3 Qc5 27. b4 axb4 28. axb4 Qa7 29. b5 Qb6 30. Qb4 Ra7 31. Ra1 Rca8 32. Rxa7 Rxa7 33. c5 dxc5 34. Rxc5 Ra4 35. Qxa4 Qxc5 36. Qc2 Qb6 37. Kf1 Kf6 38. Qb2 Ke7 39. Qa3+ Kd7 40. Ke2 Qc7 41. Qb4 Qc1 42. b6 Qe3+ 0-1

[Event "Warsaw YMCA Autumn-A 220th"]
[Site "Warsaw"]
[Date "2019.11.07"]
[Round "8"]
[White "Kosny, Marek"]
[Black "Omar, Mohamed"]
[Result "1/2-1/2"]
[ECO "D63"]
[WhiteElo "1861"]
[BlackElo "1864"]
[PlyCount "90"]
[EventDate "2019.09.20"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "POL"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. Nf3 d5 2. d4 e6 3. c4 Nf6 4. Nc3 Be7 5. Bg5 0-0 6. e3 h6 7. Bh4 a6 8. a3 Nbd7 9. Rc1 dxc4 10. Bxc4 b5 11. Ba2 c5 12. 0-0 Bb7 13. Bb1 b4 14. axb4 cxb4 15. Ne2 Rc8 16. Qd3 Qb6 17. Ne5 Be4 18. Qd2 g5 19. Nxd7 Nxd7 20. Bxg5 hxg5 21. Bxe4 a5 22. Rc2 Nf6 23. Bd3 a4 24. e4 Nh7 25. Rfc1 Qb7 26. Rc4 Rxc4 27. Rxc4 Rc8 28. Qc2 Rxc4 29. Qxc4 a3 30. Qb3 Qa7 31. Bb1 Nf6 32. bxa3 bxa3 33. Qc2 Qa5 34. Kf1 e5 35. f3 Kg7 36. Ba2 Bd6 37. Qc4 Qa7 38. Ng3 Ne8 39. Qd5 Qc7 40. Nf5+ Kg6 41. Nxd6 Qc1+ 42. Ke2 Qc2+ 43. Ke1 Qc1+ 44. Kf2 Qd2+ 45. Kf1 Qd1+ 1/2-1/2

[Event "Warsaw YMCA Autumn-A 220th"]
[Site "Warsaw"]
[Date "2019.11.01"]
[Round "7"]
[White "Safanowski, Tomasz"]
[Black "Kosny, Marek"]
[Result "1/2-1/2"]
[ECO "D60"]
[WhiteElo "1841"]
[BlackElo "1861"]
[PlyCount "77"]
[EventDate "2019.09.20"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "POL"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 Nbd7 5. Bg5 Be7 6. e3 0-0 7. Bd3 a6 8. 0-0 dxc4 9. Bxc4 b5 10. Bb3 Bb7 11. Qe2 Rc8 12. Rad1 c5 13. dxc5 Rxc5 14. e4 Re8 15. e5 Bxf3 16. Qxf3 Nxe5 17. Qg3 Nfd7 18. Ne4 Rc6 19. Bh6 Ng6 20. h4 Qc7 21. Bxg7 Kxg7 22. h5 Qxg3 23. Nxg3 Nb6 24. hxg6 hxg6 25. Ne4 a5 26. Rd3 f5 27. Nc3 b4 28. Na4 Kf6 29. Rfd1 Nc4 30. Rd7 Ne5 31. Ra7 Rec8 32. f3 Rc1 33. Rxc1 Rxc1+ 34. Kf2 Bc5+ 35. Nxc5 Rxc5 36. Ra6 Nc6 37. Ke3 Ke5 38. f4+ Kd6 39. Ba4 1/2-1/2

[Event "Warsaw YMCA Autumn-A 220th"]
[Site "Warsaw"]
[Date "2019.10.25"]
[Round "6"]
[White "Kosny, Marek"]
[Black "Kasperkiewicz, Pawel"]
[Result "1-0"]
[ECO "A30"]
[WhiteElo "1861"]
[BlackElo "1869"]
[PlyCount "95"]
[EventDate "2019.09.20"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "POL"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 c5 3. Nc3 g6 4. g3 b6 5. Bg2 Bb7 6. d4 cxd4 7. Qxd4 Nc6 8. Qh4 h6 9. 0-0 Bg7 10. Nd5 e6 11. Nxf6+ Qxf6 12. Rb1 Qxh4 13. Nxh4 0-0-0 14. Rd1 Nd4 15. Bxb7+ Kxb7 16. Kf1 d5 17. cxd5 Rxd5 18. e3 Nc6 19. Rxd5 exd5 20. Ng2 g5 21. b3 Rc8 22. h4 Nd8 23. hxg5 hxg5 24. e4 dxe4 25. Bxg5 Ne6 26. Be3 Rc2 27. a4 Nc5 28. Nh4 Nd3 29. Nf5 Be5 30. Nd4 Ra2 31. g4 Bxd4 32. Bxd4 Kc6 33. Ra1 Rc2 34. a5 Rc1+ 35. Rxc1+ Nxc1 36. axb6 axb6 37. b4 b5 38. Bc3 Kd5 39. Bd2 Nd3 40. Ke2 Ne5 41. g5 Nf3 42. Bc1 Nd4+ 43. Ke3 Nf5+ 44. Kf4 Nd4 45. Be3 Nc6 46. Bc5 Nd8 47. Kf5 Ne6 48. Be7 1-0

[Event "Warsaw YMCA Autumn-A 220th"]
[Site "Warsaw"]
[Date "2019.10.18"]
[Round "5"]
[White "Kosny, Marek"]
[Black "Poniewierski, Piotr"]
[Result "0-1"]
[ECO "A30"]
[WhiteElo "1861"]
[BlackElo "1875"]
[PlyCount "64"]
[EventDate "2019.09.20"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "POL"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. Nf3 c5 2. c4 b6 3. g3 Bb7 4. Bg2 g6 5. 0-0 Bg7 6. Nc3 e6 7. d4 cxd4 8. Nb5 d6 9. Nbxd4 a6 10. Be3 Nf6 11. h3 Nbd7 12. Qd2 Rc8 13. Rac1 Ne4 14. Qb4 0-0 15. Ng5 Bxd4 16. Nxe4 Bxe3 17. fxe3 Bxe4 18. Bxe4 Qg5 19. Kf2 Rc5 20. Qd2 Nf6 21. Bf3 Rd8 22. b4 Rf5 23. Qd4 e5 24. Qxb6 Nh5 25. g4 e4 26. Ke1 exf3 27. gxf5 fxe2 28. Rf3 Re8 29. Kxe2 Qg2+ 30. Rf2 Ng3+ 31. Kd3 Qxf2 32. fxg6 Qe2+ 0-1

[Event "Warsaw YMCA Autumn-A 220th"]
[Site "Warsaw"]
[Date "2019.10.08"]
[Round "4"]
[White "Staniak, Mariusz"]
[Black "Kosny, Marek"]
[Result "0-1"]
[ECO "B03"]
[WhiteElo "1808"]
[BlackElo "1861"]
[PlyCount "138"]
[EventDate "2019.09.20"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "POL"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Bc4 Nb6 5. Bb3 dxe5 6. Qh5 e6 7. dxe5 c5 8. Na3 Nc6 9. Nf3 Nd4 10. 0-0 g6 11. Qg4 Nxf3+ 12. Qxf3 a6 13. Rd1 Qc7 14. Qf6 Rg8 15. Bg5 Bd7 16. Rd2 h6 17. Be3 Bg7 18. Qh4 Qxe5 19. Rad1 Bf6 20. Qg4 h5 21. Qe2 0-0-0 22. Rd6 Nd5 23. Bxd5 exd5 24. R6xd5 Bb5 25. c4 Rxd5 26. Rxd5 Qxb2 27. Qxb2 Bxb2 28. Nxb5 axb5 29. Rxc5+ Kb8 30. Rxb5 Bc3 31. c5 Rc8 32. Bf4+ Ka7 33. Rb3 Ba5 34. Ra3 Ka6 35. Be3 Rc7 36. g3 Kb5 37. Kg2 Bb4 38. Rb3 Kc4 39. Rb1 Bxc5 40. Rc1+ Kd5 41. Rb1 Kc4 42. Rc1+ Kb5 43. Rb1+ Kc6 44. Rc1 b6 45. Rc2 Kb5 46. Kf3 Rd7 47. Bxc5 bxc5 48. Ke4 c4 49. f4 Kb4 50. f5 c3 51. fxg6 fxg6 52. Ke3 Kc4 53. Rc1 Re7+ 54. Kf4 Kd3 55. Kg5 Re6 56. Rd1+ Ke2 57. Rd4 Rc6 58. Re4+ Kd3 59. Re1 c2 60. Rf1 Ke2 61. Rg1 Kd2 62. Rg2+ Kc3 63. Rg1 Kb2 64. Rg2 Kb1 65. Rg1+ Kxa2 66. g4 hxg4 67. Kxg4 c1Q 68. Rxc1 Rxc1 69. Kg5 Rc6 0-1

[Event "Warsaw YMCA Autumn-A 220th"]
[Site "Warsaw"]
[Date "2019.10.03"]
[Round "1"]
[White "Kosny, Marek"]
[Black "Dabrowski, Leszek"]
[Result "1-0"]
[ECO "E11"]
[WhiteElo "1861"]
[BlackElo "1851"]
[PlyCount "59"]
[EventDate "2019.09.20"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "POL"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 e6 3. g3 d5 4. d4 Bb4+ 5. Bd2 Qe7 6. a3 Bxd2+ 7. Nbxd2 0-0 8. Bg2 Nc6 9. 0-0 Bd7 10. b4 a6 11. Rc1 b5 12. cxd5 exd5 13. Nb3 Ne4 14. Nc5 Nd6 15. Ne5 Nxe5 16. dxe5 Nc4 17. Nxd7 Qxd7 18. Bxd5 Nb2 19. Qb3 Rad8 20. e4 Na4 21. e6 Qe7 22. exf7+ Kh8 23. Qc2 Nb6 24. Qxc7 Nxd5 25. exd5 Rxf7 26. d6 Qf8 27. Qb6 Rxd6 28. Rc6 Rff6 29. Rfc1 h6 30. Qxa6 1-0

[Event "Warsaw YMCA Autumn-A 220th"]
[Site "Warsaw"]
[Date "2019.09.27"]
[Round "3"]
[White "Kosny, Marek"]
[Black "Moskwinski, Marek"]
[Result "0-1"]
[ECO "A34"]
[WhiteElo "1861"]
[BlackElo "1940"]
[PlyCount "50"]
[EventDate "2019.09.20"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "POL"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 c5 3. Nc3 Nc6 4. g3 d5 5. cxd5 Nxd5 6. Bg2 g6 7. 0-0 Bg7 8. Qa4 0-0 9. Qc4 Nxc3 10. dxc3 Qb6 11. Qh4 Bf6 12. Bg5 Bg7 13. Rab1 Be6 14. Bh6 Bxa2 15. Rbd1 Rad8 16. Ng5 f6 17. Bxg7 fxg5 18. Qh6 Rf7 19. Rxd8+ Qxd8 20. Bxc6 bxc6 21. Be5 Qd2 22. g4 Qxe2 23. Bg3 Bc4 24. Ra1 Bd5 25. c4 Be4 0-1

[Event "Warsaw YMCA Autumn-A 220th"]
[Site "Warsaw"]
[Date "2019.09.27"]
[Round "2"]
[White "Liberadzki, Slawomir"]
[Black "Kosny, Marek"]
[Result "1-0"]
[ECO "B03"]
[WhiteElo "1980"]
[BlackElo "1861"]
[PlyCount "107"]
[EventDate "2019.09.20"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "POL"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. c4 Nb6 5. exd6 cxd6 6. Nc3 g6 7. Be3 Bg7 8. Rc1 0-0 9. b3 Nc6 10. d5 Ne5 11. Be2 f5 12. f4 Nf7 13. Bf3 Re8 14. Nge2 e6 15. dxe6 Bxe6 16. Bd4 Rb8 17. 0-0 Nc8 18. Kh1 a6 19. Nd5 Bxd5 20. Bxd5 Ne7 21. Nc3 Bxd4 22. Qxd4 Nc6 23. Qd2 Qf6 24. Rcd1 Rbd8 25. Rfe1 Kf8 26. h3 Rd7 27. Rxe8+ Kxe8 28. Na4 Ncd8 29. Nb6 Rc7 30. Bxf7+ Rxf7 31. Qxd6 Qxd6 32. Rxd6 Re7 33. Rd2 Ne6 34. Nd5 Rg7 35. Re2 Kf7 36. Kg1 Rg8 37. Kf2 Rd8 38. g3 b5 39. Rc2 bxc4 40. bxc4 Nc5 41. Kf3 Ne6 42. Rb2 Rd7 43. Rb6 Ra7 44. Nb4 a5 45. Nc6 Rc7 46. Ne5+ Ke7 47. Ra6 Rc5 48. Ra7+ Nc7 49. Ke3 Kd6 50. Kd4 Ne6+ 51. Kd3 Nc7 52. a4 Ke6 53. Kd4 Kd6 54. Nf7+ 1-0

[Event "Warsaw YMCA Winter-A 209th"]
[Site "Warsaw"]
[Date "2019.03.29"]
[Round "13"]
[White "Potocki, Karol"]
[Black "Kosny, Marek"]
[Result "1-0"]
[ECO "A39"]
[WhiteElo "1829"]
[BlackElo "1849"]
[PlyCount "99"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "POL"]
[SourceTitle "CBM 189 Extra"]
[Source "ChessBase"]
[SourceDate "2019.06.03"]
[SourceVersion "1"]
[SourceVersionDate "2019.06.03"]
[SourceQuality "1"]

1. c4 c5 2. g3 Nc6 3. Bg2 g6 4. Nc3 Bg7 5. Nf3 Nf6 6. d4 cxd4 7. Nxd4 0-0 8. 0-0 Qa5 9. Nb3 Qh5 10. c5 d6 11. cxd6 exd6 12. e4 Bg4 13. f3 Be6 14. Qxd6 Bxb3 15. axb3 Rfd8 16. Qf4 Qc5+ 17. Qe3 Qb4 18. Ne2 Bf8 19. Qc3 Bc5+ 20. Kh1 Ne8 21. Bg5 Qxc3 22. bxc3 f6 23. Bf4 g5 24. Bc1 Ne5 25. Ba3 Bb6 26. Rad1 Rd3 27. f4 Rxd1 28. Rxd1 Ng4 29. Rd7 Nf2+ 30. Kg1 gxf4 31. gxf4 Nxe4+ 32. Kf1 f5 33. Bxe4 fxe4 34. c4 Rd8 35. Rxd8 Bxd8 36. Kf2 Kf7 37. Ke3 Nf6 38. h3 Bb6+ 39. c5 Bc7 40. Bb2 Nd7 41. Bd4 b6 42. cxb6 Nxb6 43. Kxe4 Nc8 44. Bc5 a6 45. Nc3 Ke6 46. f5+ Kd7 47. Nd5 Bd8 48. Ke5 a5 49. f6 h6 50. f7 1-0

[Event "Warsaw YMCA Winter-A 209th"]
[Site "Warsaw"]
[Date "2019.03.20"]
[Round "12"]
[White "Koziol, Pawel"]
[Black "Kosny, Marek"]
[Result "1-0"]
[ECO "A36"]
[WhiteElo "1854"]
[BlackElo "1849"]
[PlyCount "55"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "POL"]
[SourceTitle "CBM 189 Extra"]
[Source "ChessBase"]
[SourceDate "2019.06.03"]
[SourceVersion "1"]
[SourceVersionDate "2019.06.03"]
[SourceQuality "1"]

1. c4 c5 2. g3 Nc6 3. Bg2 g6 4. Nc3 Bg7 5. e4 Nf6 6. Nge2 d6 7. d3 0-0 8. 0-0 Bg4 9. h3 Bd7 10. Be3 Rb8 11. f4 a6 12. a4 Nb4 13. Qd2 Ne8 14. g4 f5 15. gxf5 gxf5 16. Ng3 e6 17. Kh2 Qh4 18. Rf3 Nf6 19. Kg1 Bc6 20. Raf1 b6 21. Nd5 fxe4 22. Nxf6+ Qxf6 23. dxe4 Rbd8 24. Nh5 Qg6 25. Nxg7 Qxg7 26. f5 Qd7 27. Bh6 Rfe8 28. Qg5+ 1-0

[Event "Warsaw YMCA Winter-A 209th"]
[Site "Warsaw"]
[Date "2019.03.15"]
[Round "11"]
[White "Derylo, Kamil"]
[Black "Kosny, Marek"]
[Result "1-0"]
[ECO "B03"]
[WhiteElo "1848"]
[BlackElo "1849"]
[PlyCount "79"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "POL"]
[SourceTitle "CBM 189 Extra"]
[Source "ChessBase"]
[SourceDate "2019.06.03"]
[SourceVersion "1"]
[SourceVersionDate "2019.06.03"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. c4 Nb6 5. exd6 cxd6 6. Nc3 g6 7. Be3 Bg7 8. Rc1 Nc6 9. b3 0-0 10. d5 Ne5 11. Be2 Ned7 12. Nf3 Nf6 13. Nd4 Nbd7 14. 0-0 Nc5 15. h3 Bd7 16. b4 Na6 17. Qb3 Nc7 18. Rfd1 e6 19. dxe6 fxe6 20. Bf3 Qb8 21. a4 Kh8 22. a5 e5 23. Nde2 Nfe8 24. Ne4 Bxh3 25. Nxd6 Nxd6 26. Rxd6 Rxf3 27. gxf3 Ne6 28. c5 Qf8 29. Qd5 Qe7 30. Ng3 Nf4 31. Bxf4 exf4 32. Ne4 Be5 33. Rd1 Re8 34. Rd8 Rxd8 35. Qxd8+ Qxd8 36. Rxd8+ Kg7 37. Nd6 Bc3 38. Nxb7 Bxb4 39. c6 Be7 40. c7 1-0

[Event "Warsaw YMCA Winter-A 209th"]
[Site "Warsaw"]
[Date "2019.03.08"]
[Round "10"]
[White "Kosny, Marek"]
[Black "Liberadzki, Slawomir"]
[Result "0-1"]
[ECO "A46"]
[WhiteElo "1849"]
[BlackElo "2013"]
[PlyCount "80"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "POL"]
[SourceTitle "CBM 189 Extra"]
[Source "ChessBase"]
[SourceDate "2019.06.03"]
[SourceVersion "1"]
[SourceVersionDate "2019.06.03"]
[SourceQuality "1"]

1. Nf3 d5 2. d4 Nf6 3. g3 e6 4. Bg2 b5 5. 0-0 Bb7 6. a4 b4 7. Ne5 Bd6 8. Nd3 a5 9. c3 Na6 10. Bd2 Qe7 11. cxb4 Nxb4 12. Nxb4 axb4 13. Qb3 0-0 14. Bg5 Ba6 15. Qf3 c5 16. dxc5 Bxc5 17. Rd1 h6 18. Bxf6 Qxf6 19. Qxf6 gxf6 20. e4 dxe4 21. Bxe4 Rad8 22. Nd2 Be2 23. Rdc1 Bxf2+ 24. Kxf2 Rxd2 25. Ke3 Rfd8 26. a5 Rxb2 27. a6 Bxa6 28. Rxa6 Rxh2 29. Rb6 Rb2 30. Rc7 f5 31. Bc2 Kg7 32. Rbb7 Rf8 33. Kd2 b3 34. Rxb3 Rd8+ 35. Ke3 Rxb3+ 36. Bxb3 Kg6 37. Bc2 h5 38. Rc4 Ra8 39. Bd1 Ra3+ 40. Kf4 f6 0-1

[Event "Warsaw YMCA Winter-A 209th"]
[Site "Warsaw"]
[Date "2019.03.01"]
[Round "9"]
[White "Koziol, Pawel"]
[Black "Kosny, Marek"]
[Result "1/2-1/2"]
[ECO "D36"]
[WhiteElo "1854"]
[BlackElo "1849"]
[PlyCount "53"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "POL"]
[SourceTitle "CBM 189 Extra"]
[Source "ChessBase"]
[SourceDate "2019.06.03"]
[SourceVersion "1"]
[SourceVersionDate "2019.06.03"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5 exd5 5. Bg5 Be7 6. Qc2 0-0 7. e3 c6 8. Bd3 g6 9. Nge2 Nbd7 10. 0-0-0 Ng4 11. Bxe7 Qxe7 12. Ng3 Re8 13. Kb1 Nf8 14. h4 Qd6 15. Nf1 Bd7 16. h5 Re7 17. hxg6 fxg6 18. e4 Qf4 19. f3 dxe4 20. Nxe4 Nf6 21. Nxf6+ Qxf6 22. Ng3 Be6 23. Be4 Rd8 24. Qc5 b6 25. Qxc6 Rxd4 26. Ne2 Rc4 27. Qd6 1/2-1/2

[Event "Warsaw YMCA Winter-A 209th"]
[Site "Warsaw"]
[Date "2019.02.22"]
[Round "8"]
[White "Kosny, Marek"]
[Black "Majek, Kacper"]
[Result "1-0"]
[ECO "D11"]
[WhiteElo "1849"]
[BlackElo "1996"]
[PlyCount "119"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "POL"]
[SourceTitle "CBM 189 Extra"]
[Source "ChessBase"]
[SourceDate "2019.06.03"]
[SourceVersion "1"]
[SourceVersionDate "2019.06.03"]
[SourceQuality "1"]

1. Nf3 d5 2. d4 Nf6 3. g3 Bg4 4. Ne5 Bh5 5. Bg2 e6 6. 0-0 Nbd7 7. c4 Be7 8. Nc3 c6 9. Qb3 Qb6 10. e4 dxc4 11. Nxc4 Qxb3 12. axb3 Bb4 13. Bf4 0-0 14. Bd6 Bxd6 15. Nxd6 Rfb8 16. Ra5 Kf8 17. Rfa1 a6 18. b4 Ke7 19. Nc4 Bg6 20. f3 Ne8 21. R5a3 Nc7 22. Kf2 f6 23. f4 Bf7 24. Na5 Nb6 25. Bf1 e5 26. dxe5 fxe5 27. b3 Nb5 28. Nxb5 axb5 29. R3a2 Kf6 30. Rd2 Rd8 31. Rad1 Rxd2+ 32. Rxd2 Rb8 33. Bxb5 Be8 34. Be2 Ke7 35. Ke3 Bf7 36. Bc4 Be6 37. f5 Nxc4+ 38. bxc4 Bd7 39. c5 b6 40. Nc4 bxc5 41. Nxe5 Be8 42. bxc5 Rb5 43. Nd3 Rb1 44. Kf4 Bf7 45. Ke5 Bc4 46. Kd4 Bb5 47. Nf4 Rb4+ 48. Ke5 Rc4 49. Ne6 Ba4 50. Ra2 Kf7 51. g4 h6 52. Rb2 Bb5 53. Rd2 Ke7 54. Nxg7 Rxc5+ 55. Kf4 Rc3 56. h4 Rh3 57. Ra2 Kd6 58. f6 Bc4 59. Rd2+ Kc7 60. Nf5 1-0

[Event "Warsaw YMCA Winter-A 209th"]
[Site "Warsaw"]
[Date "2019.02.20"]
[Round "7"]
[White "Borowy, Cezary"]
[Black "Kosny, Marek"]
[Result "1-0"]
[ECO "B38"]
[WhiteElo "1944"]
[BlackElo "1849"]
[PlyCount "77"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "POL"]
[SourceTitle "CBM 189 Extra"]
[Source "ChessBase"]
[SourceDate "2019.06.03"]
[SourceVersion "1"]
[SourceVersionDate "2019.06.03"]
[SourceQuality "1"]

1. c4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. e4 Bg7 6. Be3 d6 7. Nc3 Nf6 8. Be2 0-0 9. f4 Bd7 10. 0-0 Nxd4 11. Bxd4 Bc6 12. Bf3 Nd7 13. Bxg7 Kxg7 14. Kh1 Qb6 15. b3 Qe3 16. Qc1 Qxc1 17. Raxc1 f5 18. g3 Nc5 19. Rce1 e5 20. exf5 Bxf3+ 21. Rxf3 Rxf5 22. b4 Ne6 23. Rfe3 Nd4 24. fxe5 Nc2 25. exd6 Nxe1 26. Rxe1 Rd8 27. c5 a5 28. a3 b6 29. Re7+ Rf7 30. Nd5 axb4 31. axb4 bxc5 32. bxc5 Kf8 33. Kg2 Rd7 34. Re5 Kg7 35. Nb6 Rd8 36. Rd5 Rf6 37. c6 Rfxd6 38. Rxd6 Rxd6 39. c7 1-0

[Event "Warsaw YMCA Winter-A 209th"]
[Site "Warsaw"]
[Date "2019.02.15"]
[Round "6"]
[White "Kosny, Marek"]
[Black "Choroszej, Aleksander"]
[Result "1/2-1/2"]
[ECO "A37"]
[WhiteElo "1849"]
[BlackElo "2091"]
[PlyCount "54"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "POL"]
[SourceTitle "CBM 189 Extra"]
[Source "ChessBase"]
[SourceDate "2019.06.03"]
[SourceVersion "1"]
[SourceVersionDate "2019.06.03"]
[SourceQuality "1"]

1. Nf3 g6 2. c4 Bg7 3. Nc3 c5 4. g3 Nc6 5. Bg2 e5 6. 0-0 Nge7 7. d3 0-0 8. Rb1 d6 9. a3 a5 10. Bg5 f6 11. Bd2 Be6 12. e4 f5 13. Ng5 Bc8 14. f4 h6 15. Nf3 exf4 16. gxf4 fxe4 17. dxe4 Bg4 18. Ne2 Qd7 19. Bc3 Bxc3 20. bxc3 Rab8 21. Qd3 Qe6 22. Rb6 Rf6 23. Rfb1 Rbf8 24. Rf1 Qc8 25. Qd2 Qe6 26. Qd3 Qc8 27. Qd2 Qe6 1/2-1/2

[Event "Warsaw YMCA Winter-A 209th"]
[Site "Warsaw"]
[Date "2019.02.08"]
[Round "5"]
[White "Safanowski, Tomasz"]
[Black "Kosny, Marek"]
[Result "0-1"]
[ECO "D63"]
[WhiteElo "1829"]
[BlackElo "1849"]
[PlyCount "94"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "POL"]
[SourceTitle "CBM 189 Extra"]
[Source "ChessBase"]
[SourceDate "2019.06.03"]
[SourceVersion "1"]
[SourceVersionDate "2019.06.03"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Bg5 Be7 5. Nf3 Nbd7 6. e3 0-0 7. Rc1 a6 8. cxd5 exd5 9. Bd3 c6 10. 0-0 Re8 11. Bb1 Nf8 12. Ne5 g6 13. f4 Ne6 14. Bh6 Bf8 15. Bxf8 Nxf8 16. f5 g5 17. e4 dxe4 18. Nxe4 h6 19. Rxc6 Nxe4 20. Bxe4 bxc6 21. Bxc6 Rxe5 22. dxe5 Qxd1 23. Rxd1 Ra7 24. g4 Rc7 25. Rd6 h5 26. h3 hxg4 27. hxg4 Re7 28. Rd5 Bb7 29. f6 Rc7 30. Bxb7 Rxb7 31. b3 Rb4 32. Rd6 Rxg4+ 33. Kf2 a5 34. Rd8 a4 35. Kf3 Rb4 36. Re8 axb3 37. axb3 Rxb3+ 38. Kg4 Rb6 39. Kxg5 Re6 40. Re7 Ra6 41. Re8 Ra1 42. Kf4 Rh1 43. Kg5 Rh8 44. Re7 Ng6 45. e6 Nxe7 46. fxe7 Kg7 47. Kf5 Re8 0-1

[Event "Warsaw YMCA Winter-A 209th"]
[Site "Warsaw"]
[Date "2019.01.31"]
[Round "4"]
[White "Kosny, Marek"]
[Black "Kasperkiewicz, Pawel"]
[Result "0-1"]
[ECO "A30"]
[WhiteElo "1849"]
[BlackElo "1927"]
[PlyCount "144"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "POL"]
[SourceTitle "CBM 189 Extra"]
[Source "ChessBase"]
[SourceDate "2019.06.03"]
[SourceVersion "1"]
[SourceVersionDate "2019.06.03"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 c5 3. Nc3 g6 4. g3 b6 5. Bg2 Bb7 6. 0-0 Bg7 7. d4 cxd4 8. Nb5 0-0 9. Nbxd4 Nc6 10. Nc2 d5 11. Ne3 e6 12. cxd5 exd5 13. Nc2 Re8 14. Nfd4 Ne5 15. b3 Ne4 16. f3 Nd6 17. Be3 Rc8 18. Rc1 Ba6 19. Re1 h5 20. Qd2 Qe7 21. Bf2 Kh7 22. Ne3 Rxc1 23. Rxc1 Bb7 24. h3 Nd7 25. Bf1 Bh6 26. Rc7 Qd8 27. Rc3 Nf6 28. Qc2 Re7 29. Ng2 Qe8 30. g4 hxg4 31. hxg4 Nd7 32. Bg3 Ne5 33. Rc7 Bg7 34. Bf2 Qd8 35. Rc3 Qh8 36. f4 Nxg4 37. Rh3+ Nh6 38. Nf3 Qc8 39. Qd3 Qf5 40. Ng5+ Kg8 41. Qd2 Ne4 42. Nxe4 Qxh3 43. Ng5 Qc3 44. Qxc3 Bxc3 45. Nf3 Nf5 46. Ngh4 Nxh4 47. Bxh4 Re4 48. Bg3 Ba6 49. Kf2 f6 50. Nh4 Kf7 51. Ng2 Bd4+ 52. Ke1 Bc5 53. Kd1 Re8 54. Ne1 Bc8 55. Nc2 Bf5 56. Ne1 Be4 57. Bh3 f5 58. Bg2 Bxg2 59. Nxg2 Rh8 60. Nh4 Be7 61. Nf3 Bf6 62. Kc2 Rh1 63. Be1 Ke6 64. Kd3 Kd7 65. a4 Kc6 66. Kd2 Kc5 67. Kd3 Rh3 68. Bd2 b5 69. b4+ Kc6 70. axb5+ Kxb5 71. Kc2 Rxf3 72. exf3 Kc4 0-1

[Event "Warsaw YMCA Winter-A 209th"]
[Site "Warsaw"]
[Date "2019.01.24"]
[Round "3"]
[White "Kosny, Marek"]
[Black "Podgorski, Maciej"]
[Result "1/2-1/2"]
[ECO "E62"]
[WhiteElo "1849"]
[BlackElo "1818"]
[PlyCount "84"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "POL"]
[SourceTitle "CBM 189 Extra"]
[Source "ChessBase"]
[SourceDate "2019.06.03"]
[SourceVersion "1"]
[SourceVersionDate "2019.06.03"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 d6 3. Nc3 g6 4. g3 Bg7 5. Bg2 0-0 6. 0-0 e5 7. d4 Nc6 8. dxe5 dxe5 9. Qxd8 Rxd8 10. Bg5 Be6 11. b3 h6 12. Bxf6 Bxf6 13. Rad1 Nd4 14. Nxd4 exd4 15. Nd5 Be5 16. Nb4 c6 17. Nd3 Bd6 18. c5 Be7 19. Rd2 a5 20. Rc1 g5 21. Ne5 g4 22. f3 Rd5 23. Nd3 Rg5 24. f4 Rh5 25. Be4 Bd5 26. Nf2 Bxe4 27. Nxe4 Rd5 28. Nf2 Bxc5 29. Nxg4 Kg7 30. Kf1 a4 31. Rd3 axb3 32. Rxb3 Rxa2 33. Rxb7 d3 34. exd3 Rxd3 35. Rxf7+ Kg8 36. Rb7 h5 37. Nf6+ Kf8 38. Nd7+ Kg8 39. Nxc5 Rdd2 40. Ne4 Rxh2 41. Kg1 Rag2+ 42. Kf1 Ra2 1/2-1/2

[Event "Warsaw YMCA Winter-A 209th"]
[Site "Warsaw"]
[Date "2019.01.18"]
[Round "2"]
[White "Litwiniec, Michal"]
[Black "Kosny, Marek"]
[Result "0-1"]
[ECO "A45"]
[WhiteElo "1832"]
[BlackElo "1849"]
[PlyCount "80"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "POL"]
[SourceTitle "CBM 189 Extra"]
[Source "ChessBase"]
[SourceDate "2019.06.03"]
[SourceVersion "1"]
[SourceVersionDate "2019.06.03"]
[SourceQuality "1"]

1. d4 Nf6 2. Bg5 Ne4 3. Bf4 d5 4. f3 Nd6 5. e4 dxe4 6. Nc3 exf3 7. Nxf3 g6 8. Qd2 Bg7 9. 0-0-0 Bg4 10. Be2 Nd7 11. Ne5 Bxe2 12. Qxe2 0-0 13. h4 f6 14. Nf3 e5 15. dxe5 fxe5 16. Bg5 Qe8 17. Qd2 Nf6 18. Rhe1 e4 19. Bh6 Rd8 20. Bxg7 Kxg7 21. Qg5 h6 22. Qc5 Rd7 23. Nd4 a6 24. Kb1 Re7 25. Nce2 b6 26. Qa3 a5 27. Nf4 Re5 28. Qh3 Nf5 29. Nde2 h5 30. Qc3 Rf7 31. Rf1 Rc5 32. Qb3 a4 33. Qe6 Re7 34. Nd4 Nxd4 35. Qh3 Ne6 36. Ne2 Ng4 37. Qg3 Rd7 38. Nf4 Nxf4 39. Qxf4 Rf5 40. Rxd7+ Qxd7 0-1

[Event "Mazowiec-chT 1819"]
[Site "Warsaw"]
[Date "2019.01.13"]
[Round "2.1"]
[White "Kosny, Marek"]
[Black "Gawronski, Miroslaw"]
[Result "1-0"]
[ECO "D11"]
[WhiteElo "1855"]
[BlackElo "2046"]
[PlyCount "119"]
[EventDate "2018.12.02"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "POL"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. Nf3 d5 2. d4 Nf6 3. g3 Bf5 4. Bg2 h6 5. c4 e6 6. 0-0 c6 7. Nc3 Nbd7 8. c5 b6 9. b4 a5 10. b5 bxc5 11. bxc6 Nb8 12. Qa4 Qc8 13. c7+ Nbd7 14. Nb5 Be7 15. Bf4 Ra6 16. dxc5 Bxc5 17. Rac1 0-0 18. Be5 Be4 19. Bd4 Bxf3 20. Bxf3 Bxd4 21. Qxd4 Qb7 22. a4 Rfa8 23. Rc2 e5 24. Qc3 Rc8 25. Qa3 Qb6 26. Rfc1 e4 27. Bg2 Ng4 28. e3 Nde5 29. h3 Nf6 30. Qe7 Nc4 31. Bf1 Raa8 32. Bxc4 dxc4 33. Rxc4 Ne8 34. Rc6 Qb7 35. Qxe4 Ra6 36. Re6 Qxe4 37. Rxe4 Kf8 38. Rc5 Nd6 39. Rd4 Nb7 40. Rcd5 Ke7 41. e4 f6 42. f4 Rc6 43. Kf2 Rc2+ 44. Kf3 g6 45. Rd7+ Ke6 46. g4 f5 47. exf5+ gxf5 48. R4d5 fxg4+ 49. hxg4 Rc4 50. Rd8 R8xc7 51. Nxc7+ Rxc7 52. Re5+ Kf7 53. Rdd5 Rc3+ 54. Ke4 Rc4+ 55. Kf5 Rb4 56. Rd7+ Kf8 57. Rb5 Rxb5+ 58. axb5 Nc5 59. Ra7 a4 60. b6 1-0

[Event "Mazowiec-chT 1819"]
[Site "Warsaw"]
[Date "2019.01.13"]
[Round "3.11"]
[White "Maj, Pawel1111"]
[Black "Kosny, Marek"]
[Result "1-0"]
[ECO "B38"]
[WhiteElo "2096"]
[BlackElo "1855"]
[PlyCount "83"]
[EventDate "2018.12.02"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "POL"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. Nf3 c5 2. e4 Nc6 3. d4 cxd4 4. Nxd4 g6 5. c4 Bg7 6. Be3 d6 7. Nc3 Nf6 8. Be2 0-0 9. 0-0 Bd7 10. Nc2 Rb8 11. f3 a6 12. Qd2 Re8 13. Rab1 Qc8 14. Rfc1 Ne5 15. Na3 Qd8 16. b4 Rc8 17. Kh1 h5 18. h3 Be6 19. Nd5 Bxd5 20. cxd5 b5 21. Nc2 Kh7 22. a4 Nc4 23. Bxc4 bxc4 24. Nd4 h4 25. Nc6 Qd7 26. b5 axb5 27. axb5 Nh5 28. Rxc4 e6 29. b6 exd5 30. exd5 Ng3+ 31. Kg1 Nf5 32. Bf4 Qb7 33. Na5 Qa6 34. Rxc8 Rxc8 35. b7 Rb8 36. Qb4 Bd4+ 37. Kh2 g5 38. Nc6 Rxb7 39. Qxb7 Qxb7 40. Rxb7 gxf4 41. Rxf7+ Kg6 42. Rxf5 1-0

[Event "Warsaw YMCA Winter-A 209th"]
[Site "Warsaw"]
[Date "2019.01.11"]
[Round "1"]
[White "Kosny, Marek"]
[Black "Potocki, Karol"]
[Result "1/2-1/2"]
[ECO "A30"]
[WhiteElo "1849"]
[BlackElo "1829"]
[PlyCount "146"]
[EventDate "2019.01.11"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "POL"]
[SourceTitle "CBM 189 Extra"]
[Source "ChessBase"]
[SourceDate "2019.06.03"]
[SourceVersion "1"]
[SourceVersionDate "2019.06.03"]
[SourceQuality "1"]

1. Nf3 d5 2. g3 e6 3. Bg2 c5 4. 0-0 Nc6 5. d3 Nf6 6. c4 Be7 7. Bf4 0-0 8. Nc3 a6 9. Rc1 d4 10. Na4 Nh5 11. Bd2 Nf6 12. h3 Nd7 13. b3 Qc7 14. e3 e5 15. Re1 b5 16. Nb2 Bd6 17. exd4 exd4 18. b4 Bb7 19. bxc5 Nxc5 20. Ng5 Ne5 21. Bf4 Bxg2 22. Kxg2 Qb7+ 23. f3 f6 24. Ne4 Nxe4 25. Rxe4 Ba3 26. Rc2 Nc6 27. Rce2 g5 28. Bc1 Ne5 29. Rc2 Rad8 30. Bxg5 Nxf3 31. Qxf3 fxg5 32. Qg4 h6 33. Qe6+ Kg7 34. cxb5 Rf6 35. Qe5 Bd6 36. Qxd4 axb5 37. Nd1 Bc7 38. Qc3 Bb6 39. Nf2 Kg6 40. Ng4 Rfd6 41. Qb3 Bd4 42. Kh2 h5 43. Rxd4 hxg4 44. Rxg4 Qd7 45. Rc5 Rd5 46. Rxd5 Qxd5 47. Qxd5 Rxd5 48. h4 Rxd3 49. Rxg5+ Kh6 50. Rxb5 Rd2+ 51. Kh3 Rxa2 52. Rb6+ Kg7 53. h5 Ra4 54. g4 Ra3+ 55. Kh4 Ra5 56. Rb7+ Kg8 57. h6 Rc5 58. g5 Kh8 59. Kh5 Ra5 60. Rf7 Kg8 61. Rg7+ Kh8 62. Rg6 Kh7 63. Rf6 Rb5 64. Rf7+ Kg8 65. Re7 Rb6 66. Kg4 Rb5 67. Kf4 Ra5 68. Re5 Ra8 69. Kf5 Rf8+ 70. Kg6 Ra8 71. Re6 Rf8 72. h7+ Kh8 73. Kh6 Rf6+ 1/2-1/2

[Event "Mazowiec-chT 1819"]
[Site "Warsaw"]
[Date "2018.12.02"]
[Round "1.7"]
[White "Kosny, Marek"]
[Black "Chrzaszcz, Malvina"]
[Result "0-1"]
[ECO "A34"]
[WhiteElo "1855"]
[BlackElo "2004"]
[PlyCount "90"]
[EventDate "2018.12.02"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "POL"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. Nf3 d5 2. d4 Nf6 3. g3 e6 4. Bg2 c5 5. 0-0 Nc6 6. c4 Be7 7. Nc3 0-0 8. Bg5 dxc4 9. dxc5 Qa5 10. Qa4 Qxc5 11. Rac1 Nb4 12. Bxf6 gxf6 13. a3 Nd5 14. Ne4 Qb6 15. Rc2 f5 16. Ned2 c3 17. bxc3 Qc5 18. e4 Nb6 19. Qb4 Qc7 20. Qb3 Bd7 21. Qb2 Ba4 22. Rcc1 fxe4 23. Nd4 e3 24. fxe3 Bg5 25. Rfe1 Rac8 26. c4 Qe5 27. Rc3 Rfd8 28. N4f3 Qa5 29. Nxg5 Qxg5 30. Ne4 Qe5 31. Qb4 Bc6 32. Nf2 Bxg2 33. Kxg2 Nd5 34. cxd5 Rxc3 35. dxe6 fxe6 36. Ng4 Qd5+ 37. Kg1 Qd2 38. Qe4 Qxe1+ 39. Kg2 Rd2+ 40. Kh3 Qf1+ 41. Kh4 Rxh2+ 42. Kg5 h6+ 43. Nxh6+ Rxh6 44. Kxh6 Qf6+ 45. Kh5 Qf5+ 0-1

[Event "Baltic Cup-B 2nd"]
[Site "Darlowko"]
[Date "2018.07.03"]
[Round "9"]
[White "Socko, Szymon"]
[Black "Kosny, Marek"]
[Result "0-1"]
[ECO "B02"]
[WhiteElo "1604"]
[BlackElo "1891"]
[PlyCount "126"]
[EventDate "2018.06.24"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 187 Extra"]
[Source "ChessBase"]
[SourceDate "2018.11.04"]
[SourceVersion "1"]
[SourceVersionDate "2018.11.04"]
[SourceQuality "1"]

1. e4 Nf6 2. Nc3 d5 3. exd5 Nxd5 4. Bc4 c6 5. Nxd5 cxd5 6. Bb5+ Nc6 7. Nf3 g6 8. 0-0 Bg7 9. Re1 0-0 10. c3 Bg4 11. h3 Bxf3 12. Qxf3 e5 13. d3 f5 14. Qe2 Qd6 15. Bg5 f4 16. Bxc6 bxc6 17. f3 a5 18. Bh4 a4 19. a3 Rab8 20. Rab1 Rb7 21. Qc2 Rb3 22. Bf2 c5 23. c4 d4 24. Re2 g5 25. Qd1 Qg6 26. Rd2 Rfb8 27. Qc2 Qb6 28. Kh2 Kf7 29. Bg1 Bf6 30. Bf2 Qe6 31. Re1 Bd8 32. Rde2 Bc7 33. g3 Qg6 34. Rd1 Qc6 35. Kg2 h5 36. g4 hxg4 37. hxg4 Qb6 38. Rb1 Qg6 39. Rd1 Rh8 40. Ree1 Qb6 41. Rb1 Rb8 42. Re2 Bd6 43. Rd2 Kf6 44. Bg1 Qb7 45. Bf2 Qg7 46. Rdd1 Qh7 47. Qe2 Kg7 48. Qd2 Rh8 49. Rh1 Qxd3 50. Qxd3 Rxd3 51. Rxh8 Kxh8 52. Be1 Rb3 53. Ba5 Kg7 54. Kf2 Kf6 55. Ke2 Ke6 56. Kf2 e4 57. fxe4 Ke5 58. Bd8 Kxe4 59. Bxg5 Rf3+ 60. Ke2 d3+ 61. Kd2 Rf2+ 62. Ke1 Rh2 63. Rd1 Ke3 0-1

[Event "Baltic Cup-B 2nd"]
[Site "Darlowko"]
[Date "2018.07.01"]
[Round "7"]
[White "Cwiek, Ryszard"]
[Black "Kosny, Marek"]
[Result "1-0"]
[ECO "B02"]
[WhiteElo "1809"]
[BlackElo "1891"]
[PlyCount "151"]
[EventDate "2018.06.24"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 187 Extra"]
[Source "ChessBase"]
[SourceDate "2018.11.04"]
[SourceVersion "1"]
[SourceVersionDate "2018.11.04"]
[SourceQuality "1"]

1. e4 Nf6 2. Nc3 d5 3. exd5 Nxd5 4. Nxd5 Qxd5 5. Qf3 Be6 6. Qxd5 Bxd5 7. f3 Nd7 8. b3 e5 9. Bb2 Be7 10. 0-0-0 0-0-0 11. d4 f6 12. Bd3 exd4 13. Bxd4 Ba3+ 14. Bb2 Bxb2+ 15. Kxb2 Nc5 16. Ne2 Be6 17. Nf4 Nxd3+ 18. Rxd3 Bf5 19. Rxd8+ Rxd8 20. Kc3 Rd6 21. Nd3 Bxd3 22. cxd3 Kd7 23. Re1 Rd5 24. Re4 Kd6 25. Rg4 g5 26. Re4 h5 27. d4 Rf5 28. a4 h4 29. h3 Rd5 30. b4 a6 31. Re8 Kd7 32. Rb8 Kc6 33. Kc4 b5+ 34. axb5+ axb5+ 35. Kd3 Rd7 36. Rf8 Rd6 37. Ke4 Kd7 38. f4 Ke7 39. Rb8 gxf4 40. Rxb5 Ke6 41. d5+ Kd7 42. Kxf4 Ra6 43. Kg4 f5+ 44. Kxf5 Ra8 45. Kg5 Rh8 46. Rc5 Rg8+ 47. Kxh4 Rxg2 48. Kh5 Rg7 49. Rc6 Rg3 50. h4 Rd3 51. Rc5 Rb3 52. Rc4 Rd3 53. Kh6 Rxd5 54. h5 Rd1 55. Rg4 Ke6 56. Kh7 Rh1 57. h6 Rd1 58. Rg7 c6 59. Rc7 Kd6 60. Rc8 Kd7 61. Ra8 Rg1 62. Rg8 Rh1 63. Rg6 Re1 64. Kg8 Re8+ 65. Kf7 Re7+ 66. Kf6 Re6+ 67. Kf5 Re1 68. h7 Rh1 69. Rg7+ Kd6 70. Kf6 Kd5 71. Rb7 Rf1+ 72. Kg7 Rg1+ 73. Kf8 Rh1 74. Kg8 Rg1+ 75. Rg7 Re1 76. h8Q 1-0

[Event "Baltic Cup-B 2nd"]
[Site "Darlowko"]
[Date "2018.06.29"]
[Round "6"]
[White "Kosny, Marek"]
[Black "Haliniak, Wojciech"]
[Result "1-0"]
[ECO "D11"]
[WhiteElo "1891"]
[BlackElo "1614"]
[PlyCount "117"]
[EventDate "2018.06.24"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 187 Extra"]
[Source "ChessBase"]
[SourceDate "2018.11.04"]
[SourceVersion "1"]
[SourceVersionDate "2018.11.04"]
[SourceQuality "1"]

1. Nf3 d5 2. d4 Nf6 3. g3 Bf5 4. Bg2 e6 5. 0-0 Bd6 6. c4 c6 7. c5 Bc7 8. Nc3 Nbd7 9. b4 e5 10. dxe5 Nxe5 11. Nd4 Bg6 12. Bg5 h6 13. Bxf6 Qxf6 14. e4 dxe4 15. Qe2 0-0 16. Bxe4 Ng4 17. Rad1 Be5 18. Qxg4 Bxd4 19. Ne2 h5 20. Qf3 Bxe4 21. Qxe4 Be5 22. Rd7 Rfe8 23. Qc4 Re7 24. Rfd1 Rae8 25. a4 Qf3 26. Qd3 Rxd7 27. Qxd7 Re6 28. Qd8+ Kh7 29. Qd3+ Qxd3 30. Rxd3 h4 31. Rd7 Bf6 32. Kf1 Re7 33. Rd3 hxg3 34. hxg3 Re4 35. Rb3 Kg6 36. Ke1 Kf5 37. Kd2 Ke5 38. f3 Rc4 39. Kd3 Kd5 40. Nf4+ Rxf4 41. gxf4 g6 42. Rb1 Bh4 43. Rc1 Bg3 44. Rc4 f5 45. Rd4+ Ke6 46. Rd6+ Kf7 47. Rd7+ Ke6 48. Rxb7 Bxf4 49. Rxa7 g5 50. Rg7 Kf6 51. Rg8 Kf7 52. Rc8 g4 53. fxg4 fxg4 54. Ke2 Ke6 55. Rg8 g3 56. a5 Kd7 57. a6 Kc7 58. a7 Kb7 59. a8Q+ 1-0

[Event "Baltic Cup-B 2nd"]
[Site "Darlowko"]
[Date "2018.06.28"]
[Round "5"]
[White "Tylenda, Krzysztof"]
[Black "Kosny, Marek"]
[Result "1/2-1/2"]
[ECO "B04"]
[WhiteElo "1722"]
[BlackElo "1891"]
[PlyCount "203"]
[EventDate "2018.06.24"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 187 Extra"]
[Source "ChessBase"]
[SourceDate "2018.11.04"]
[SourceVersion "1"]
[SourceVersionDate "2018.11.04"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. c4 Nb6 5. exd6 cxd6 6. Nc3 g6 7. Be3 Bg7 8. Rc1 0-0 9. Nf3 Bg4 10. Be2 Nc6 11. b3 d5 12. c5 Nc8 13. h3 Bxf3 14. Bxf3 e6 15. 0-0 N8e7 16. Ne2 Nf5 17. Qd2 Nh4 18. b4 Nxf3+ 19. gxf3 Ne7 20. Ng3 Qd7 21. Bf4 Rfc8 22. Bd6 Nc6 23. Ne2 e5 24. dxe5 Bxe5 25. Bxe5 Nxe5 26. Kg2 Rd8 27. Rfd1 Qf5 28. Nd4 Qf6 29. a4 g5 30. b5 Rac8 31. c6 bxc6 32. bxc6 Ng6 33. c7 Rd6 34. Rh1 Nh4+ 35. Kf1 Rd7 36. Rc6 Qe5 37. Rg1 f6 38. f4 Qe4 39. Re6 Qb1+ 40. Re1 Qb6 41. fxg5 f5 42. Qf4 Ng6 43. Qxf5 Rdxc7 44. Qxd5+ Rf7 45. Nf5 Qa6+ 46. Qb5 Qxb5+ 47. axb5 Rxf5 48. Ra1 Rc7 49. Rg3 Rxb5 50. Rga3 Rbb7 51. Kg2 Rf7 52. Kg3 Ne7 53. f4 Nf5+ 54. Kg4 Nd6 55. Ra4 Rbc7 56. Rd1 Nc4 57. Rd8+ Kg7 58. Rd4 Ne3+ 59. Kh5 Rc3 60. Rd8 Nf1 61. Ra8 Rxh3+ 62. Kg4 Rg3+ 63. Kh5 Ne3 64. Kh4 Rf3 65. R8xa7 R3xf4+ 66. Rxf4 Rxa7 67. Re4 Nd5 68. Kh5 Ne7 69. Rb4 Ng6 70. Rb8 Rc7 71. Ra8 Nh8 72. Ra5 Re7 73. Kg4 Nf7 74. Kf5 Rb7 75. Kg4 Rb4+ 76. Kh5 Re4 77. Ra7 Re5 78. Kh4 Re4+ 79. Kh5 Re1 80. Rb7 Kf8 81. Rb8+ Ke7 82. Rb7+ Ke6 83. Rb6+ Ke5 84. Rb7 Rf1 85. Rb5+ Ke6 86. Rb6+ Nd6 87. Kh6 Rh1+ 88. Kg7 Ke5 89. Ra6 Rh4 90. Ra5+ Kf4 91. Rd5 Ne4 92. g6 h5 93. Kh6 Nf6 94. g7 Ke4 95. Rd6 Ng8+ 96. Kh7 Rg4 97. Kxg8 Kf3 98. Kh7 Rxg7+ 99. Kxg7 h4 100. Rh6 Kg3 101. Rxh4 Kxh4 102. Kg6 1/2-1/2

[Event "Baltic Cup-B 2nd"]
[Site "Darlowko"]
[Date "2018.06.27"]
[Round "4"]
[White "Kosny, Marek"]
[Black "Kozlowski, Pawel"]
[Result "0-1"]
[ECO "A10"]
[WhiteElo "1891"]
[BlackElo "1602"]
[PlyCount "108"]
[EventDate "2018.06.24"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 187 Extra"]
[Source "ChessBase"]
[SourceDate "2018.11.04"]
[SourceVersion "1"]
[SourceVersionDate "2018.11.04"]
[SourceQuality "1"]

1. Nf3 e6 2. c4 f5 3. Nc3 Nf6 4. g3 b6 5. Bg2 Bb7 6. 0-0 Be7 7. d3 0-0 8. a3 a6 9. b4 d6 10. Qb3 Qe8 11. Be3 Ng4 12. c5 Bf6 13. Bf4 Bxc3 14. Qxc3 e5 15. Bd2 Nc6 16. h3 Nf6 17. cxb6 cxb6 18. Be3 b5 19. Rac1 Rc8 20. Qb2 Qh5 21. Rc2 Ne7 22. Rfc1 Rxc2 23. Rxc2 Ned5 24. Qc1 Kh8 25. Bg5 Nd7 26. Bd2 e4 27. dxe4 fxe4 28. Nd4 Qe5 29. Nc6 Qf5 30. Be1 N7b6 31. Na5 Ba8 32. Qb2 e3 33. f3 Nf6 34. Rc7 d5 35. Bc3 Na4 36. Qc1 Nxc3 37. Qxc3 Qe6 38. Nb3 Qd6 39. f4 h6 40. Nd4 Rg8 41. Nf5 Qe6 42. g4 Qb6 43. Rc8 Bb7 44. Qc7 Qxc7 45. Rxc7 Ba8 46. Nxe3 d4 47. Nf5 Bxg2 48. Kxg2 d3 49. exd3 Nd5 50. Rd7 Nxf4+ 51. Kg3 Ne2+ 52. Kh4 g5+ 53. Kh5 Nf4+ 54. Kxh6 Rg6# 0-1

[Event "Baltic Cup-B 2nd"]
[Site "Darlowko"]
[Date "2018.06.26"]
[Round "3"]
[White "Koruch, Maria"]
[Black "Kosny, Marek"]
[Result "0-1"]
[ECO "B03"]
[WhiteElo "1714"]
[BlackElo "1891"]
[PlyCount "60"]
[EventDate "2018.06.24"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 187 Extra"]
[Source "ChessBase"]
[SourceDate "2018.11.04"]
[SourceVersion "1"]
[SourceVersionDate "2018.11.04"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. c4 Nb6 5. exd6 cxd6 6. Nc3 g6 7. Be3 Bg7 8. Rc1 Nc6 9. b3 0-0 10. d5 Ne5 11. Be2 h5 12. f4 Ng4 13. Bd4 Bh6 14. h3 Nf6 15. Nf3 Bxf4 16. 0-0 Nbd7 17. Nd2 Be5 18. Nde4 Bxd4+ 19. Qxd4 Nxe4 20. Qxe4 Ne5 21. c5 Qa5 22. b4 Qd8 23. b5 f5 24. Qe3 e6 25. c6 Rf7 26. Bf3 Nxf3+ 27. gxf3 f4 28. Qe4 exd5 29. c7 Qg5+ 30. Kh1 dxe4 0-1

[Event "Baltic Cup-B 2nd"]
[Site "Darlowko"]
[Date "2018.06.25"]
[Round "2"]
[White "Kosny, Marek"]
[Black "Vanduyfhuys, Igor"]
[Result "0-1"]
[ECO "A36"]
[WhiteElo "1891"]
[BlackElo "1802"]
[PlyCount "114"]
[EventDate "2018.06.24"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 187 Extra"]
[Source "ChessBase"]
[SourceDate "2018.11.04"]
[SourceVersion "1"]
[SourceVersionDate "2018.11.04"]
[SourceQuality "1"]

1. Nf3 c5 2. c4 Nc6 3. g3 g6 4. Bg2 Bg7 5. Nc3 e6 6. e4 Nge7 7. 0-0 0-0 8. d3 d5 9. Bd2 b6 10. Ne1 dxc4 11. dxc4 Ba6 12. b3 Bb7 13. Rc1 Nd4 14. Nc2 Nec6 15. Ne2 Qe7 16. Nexd4 Nxd4 17. Nxd4 Bxd4 18. Qe2 e5 19. h4 h5 20. Bf3 Rfd8 21. Kg2 Rd6 22. Be3 Rad8 23. Bxd4 Rxd4 24. Rcd1 Kg7 25. Rfe1 Qe8 26. Rxd4 Rxd4 27. Rd1 Qd7 28. Rxd4 cxd4 29. Qd3 Qd6 30. a4 Qb4 31. Bd1 a5 32. f3 Kf8 33. Kf2 Ke7 34. f4 f6 35. f5 gxf5 36. exf5 Kd6 37. Bxh5 Kc5 38. Bf3 Qc3 39. Qxc3 dxc3 40. Bd1 Be4 41. g4 Kd6 42. b4 axb4 43. c5+ bxc5 44. a5 c2 45. Bxc2 Bxc2 46. Ke3 b3 47. Kd2 c4 48. a6 Be4 49. Kc3 Bd5 50. g5 fxg5 51. h5 e4 52. h6 e3 53. h7 e2 54. Kd2 b2 55. h8Q e1Q+ 56. Kxe1 b1Q+ 57. Kf2 Qxf5+ 0-1

[Event "Baltic Cup-B 2nd"]
[Site "Darlowko"]
[Date "2018.06.24"]
[Round "1"]
[White "Kozielski, Miroslaw"]
[Black "Kosny, Marek"]
[Result "0-1"]
[ECO "D35"]
[WhiteElo "1703"]
[BlackElo "1891"]
[PlyCount "68"]
[EventDate "2018.06.24"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 187 Extra"]
[Source "ChessBase"]
[SourceDate "2018.11.04"]
[SourceVersion "1"]
[SourceVersionDate "2018.11.04"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5 exd5 5. Bg5 Be7 6. e3 0-0 7. Bd3 c6 8. Nge2 Bg4 9. Qc2 Bxe2 10. Nxe2 Nbd7 11. 0-0 Re8 12. Rab1 Nf8 13. b4 Rc8 14. Bf5 Rc7 15. Bf4 Bd6 16. Bxd6 Qxd6 17. Qc5 Qd8 18. Qxa7 g6 19. Bd3 Ne6 20. Rfc1 b5 21. Qa3 Qd6 22. Ng3 h5 23. Rc2 h4 24. Nf1 h3 25. g3 Ng5 26. Nd2 Qd7 27. Qc1 Ra7 28. Rxc6 Rxa2 29. Rxf6 Kg7 30. Qc6 Qxc6 31. Rxc6 Rxd2 32. Bxb5 Ra8 33. Ra6 Nf3+ 34. Kh1 Rxf2 0-1

[Event "Warsaw YMCA Winter 194th"]
[Site "Warsaw"]
[Date "2018.03.16"]
[Round "10"]
[White "Kosny, Marek"]
[Black "Kaminski, Jan"]
[Result "1-0"]
[ECO "E01"]
[WhiteElo "1852"]
[BlackElo "1838"]
[PlyCount "133"]
[EventDate "2018.01.04"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "POL"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. Nf3 d5 2. d4 e6 3. g3 c5 4. Bg2 Nf6 5. 0-0 cxd4 6. Nxd4 Nc6 7. c4 Bc5 8. Nxc6 bxc6 9. Bg5 0-0 10. Qc2 Be7 11. Rd1 h6 12. Bf4 Qa5 13. Nd2 Ba6 14. a3 Nd7 15. b4 Qd8 16. e4 e5 17. exd5 cxd5 18. Bxd5 exf4 19. b5 Rc8 20. bxa6 fxg3 21. hxg3 Ne5 22. Qf5 Qc7 23. Rab1 g6 24. Qe4 Qd6 25. Nb3 Qf6 26. Re1 Bd6 27. c5 Bb8 28. Bb7 Rcd8 29. Rbd1 h5 30. Kg2 Ng4 31. Qc2 h4 32. Qe2 Rxd1 33. Rxd1 hxg3 34. fxg3 Qg5 35. Rd3 Ne5 36. Re3 Rd8 37. Nd2 Kg7 38. Ne4 Qf5 39. Nd6 Bxd6 40. cxd6 Ng4 41. Re4 Nf6 42. Rd4 Qc5 43. Qd2 Qxa3 44. d7 Qe7 45. Bc6 Qa3 46. Qe2 Qc5 47. Qc4 Qxc4 48. Rxc4 Kf8 49. Bb5 Nxd7 50. Rc7 Nb6 51. Rxa7 Rd2+ 52. Kf3 Rb2 53. Bc6 Ra2 54. Bb5 Rb2 55. Bc6 Ra2 56. Bb5 Rb2 57. Bf1 Rb1 58. Bd3 Rb3 59. Ke4 Na4 60. Kd4 Kg7 61. Rb7 Rxd3+ 62. Kxd3 Nc5+ 63. Kc4 Nxa6 64. Kb5 Nb8 65. Rxb8 f5 66. Kc4 Kh6 67. Kd4 1-0

[Event "Warsaw YMCA Winter 194th"]
[Site "Warsaw"]
[Date "2018.03.08"]
[Round "9"]
[White "Choroszej, Aleksander"]
[Black "Kosny, Marek"]
[Result "1-0"]
[ECO "D37"]
[WhiteElo "2073"]
[BlackElo "1852"]
[PlyCount "63"]
[EventDate "2018.01.04"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "POL"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 Be7 5. Bf4 0-0 6. e3 a6 7. c5 Nbd7 8. Bd3 Re8 9. 0-0 Nf8 10. h3 h6 11. b4 Bd7 12. Qc2 b6 13. a3 b5 14. Bh2 c6 15. Ne5 Qc8 16. g4 Bd8 17. f4 Re7 18. g5 N6h7 19. gxh6 gxh6 20. Kh1 f5 21. Rg1+ Kh8 22. Rg3 Be8 23. Rag1 Nf6 24. Qg2 Raa7 25. Be2 a5 26. h4 axb4 27. axb4 Bf7 28. h5 Qa8 29. Rg7 Ng4 30. Bxg4 fxg4 31. Qxg4 Be8 32. Rh7+ 1-0

[Event "Warsaw YMCA Winter 194th"]
[Site "Warsaw"]
[Date "2018.03.01"]
[Round "8"]
[White "Delega, Tomasz"]
[Black "Kosny, Marek"]
[Result "1-0"]
[ECO "B03"]
[WhiteElo "1940"]
[BlackElo "1852"]
[PlyCount "113"]
[EventDate "2018.01.04"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "POL"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. c4 Nb6 5. exd6 cxd6 6. Nc3 Nc6 7. d5 Ne5 8. f4 Ng4 9. Be2 Nf6 10. Be3 g6 11. Rc1 Bg7 12. b3 0-0 13. Nf3 Bg4 14. 0-0 Nbd7 15. Nd4 Bxe2 16. Qxe2 Nc5 17. f5 Ncd7 18. fxg6 hxg6 19. Rf3 Ng4 20. Kh1 Nde5 21. Rg3 Nxe3 22. Qxe3 Qd7 23. Nce2 Rac8 24. Rf1 a6 25. a4 e6 26. Nc3 Rce8 27. Qd2 Qd8 28. dxe6 fxe6 29. Nf3 Qb6 30. Qc2 Qe3 31. Nd1 Qf4 32. Rg1 Rf5 33. Nf2 Kf7 34. Nh3 Qh6 35. Nhg5+ Rxg5 36. Nxg5+ Ke7 37. c5 d5 38. Nf3 g5 39. Nxg5 Rh8 40. Nh3 Bf6 41. Qe2 Nc6 42. Rf1 Rh7 43. Qg4 Nd4 44. b4 Nf5 45. Rgf3 Be5 46. Rxf5 exf5 47. Qxf5 Qh5 48. Qf8+ Ke6 49. Qc8+ Ke7 50. Qxb7+ Ke6 51. Qxa6+ Kd7 52. Qb7+ Bc7 53. Qb5+ Ke7 54. Re1+ Be5 55. Qb7+ Kf8 56. Qxd5 Re7 57. Qf3+ 1-0

[Event "Warsaw YMCA Winter 194th"]
[Site "Warsaw"]
[Date "2018.02.22"]
[Round "7"]
[White "Kosny, Marek"]
[Black "Choroszej, Aleksander"]
[Result "1-0"]
[ECO "A37"]
[WhiteElo "1852"]
[BlackElo "2073"]
[PlyCount "74"]
[EventDate "2018.01.04"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "POL"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. c4 g6 2. Nc3 Bg7 3. g3 c5 4. Bg2 Nc6 5. Nf3 e5 6. 0-0 Nge7 7. e4 d6 8. d3 0-0 9. Bg5 f6 10. Bd2 Rb8 11. Rb1 h6 12. a3 a5 13. Nd5 Bd7 14. b4 axb4 15. axb4 Nxd5 16. cxd5 Nxb4 17. Bxb4 cxb4 18. Rxb4 b5 19. Qd2 f5 20. Rfb1 f4 21. Ne1 Qg5 22. R4b2 h5 23. Qa5 Qe7 24. Nc2 h4 25. Qe1 Bh6 26. Na3 hxg3 27. fxg3 Qd8 28. Bf1 Qb6+ 29. Kh1 Qc5 30. Qb4 Rfc8 31. Qxc5 Rxc5 32. gxf4 exf4 33. d4 Rc7 34. Rb3 Bg7 35. Rb4 Ra7 36. R1b3 Re8 37. Bd3 f3 1-0

[Event "Warsaw YMCA Winter 194th"]
[Site "Warsaw"]
[Date "2018.02.15"]
[Round "6"]
[White "Borowy, Cezary"]
[Black "Kosny, Marek"]
[Result "1-0"]
[ECO "B03"]
[WhiteElo "2027"]
[BlackElo "1852"]
[PlyCount "63"]
[EventDate "2018.01.04"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "POL"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. c4 Nb6 5. exd6 cxd6 6. Nc3 g6 7. Be3 Bg7 8. Rc1 0-0 9. b3 Nc6 10. d5 Ne5 11. Be2 Ned7 12. Nf3 Nf6 13. Qd2 Re8 14. Bh6 Bh8 15. 0-0 Bg4 16. h3 Bxf3 17. Bxf3 Nbd7 18. Be4 Nh5 19. Be3 Ng7 20. f4 Nf6 21. Bb1 Qd7 22. f5 gxf5 23. Bd4 e5 24. dxe6 Rxe6 25. Bxf5 Nxf5 26. Rxf5 Re1+ 27. Rf1 Rxc1 28. Qxc1 Ne8 29. Qg5+ Bg7 30. Nd5 h6 31. Qxg7+ Nxg7 32. Nf6+ 1-0

[Event "Warsaw YMCA Winter 194th"]
[Site "Warsaw"]
[Date "2018.02.09"]
[Round "5"]
[White "Kosny, Marek"]
[Black "Kasperkiewicz, Pawel"]
[Result "1-0"]
[ECO "A39"]
[WhiteElo "1852"]
[BlackElo "2064"]
[PlyCount "121"]
[EventDate "2018.01.04"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "POL"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 c5 3. Nc3 g6 4. g3 Bg7 5. Bg2 0-0 6. 0-0 Nc6 7. d4 cxd4 8. Nxd4 Nxd4 9. Qxd4 d6 10. Qh4 Be6 11. Bg5 Qa5 12. Rac1 Rab8 13. Rfd1 Rfc8 14. b3 a6 15. Bd5 Rc5 16. Na4 Bxd5 17. Bd2 Qxa4 18. bxa4 Bc6 19. a5 h6 20. g4 g5 21. Qh3 Bd7 22. Qe3 Re5 23. Qa7 Rf8 24. Bc3 Rxe2 25. Bxf6 Bxf6 26. Qxb7 Bc8 27. Qf3 Rxa2 28. c5 dxc5 29. Rxc5 Ra4 30. h3 Rf4 31. Qc6 Kg7 32. Rc4 Bb7 33. Qc7 Rc8 34. Qxc8 Bxc8 35. Rxc8 Ra4 36. Rd5 e6 37. Rd7 Rf4 38. Kg2 Bd4 39. f3 h5 40. Ra8 hxg4 41. hxg4 Bc3 42. Rxa6 Ra4 43. Rxe6 Rxa5 44. Ree7 Ra2+ 45. Kf1 Ra1+ 46. Kf2 Ra2+ 47. Ke3 Ra6 48. Rxf7+ Kg6 49. Rf5 Re6+ 50. Kd3 Bf6 51. Kc4 Ra6 52. Kd5 Ra5+ 53. Ke6 Ra6+ 54. Rd6 Rxd6+ 55. Kxd6 Bb2 56. Rb5 Ba1 57. Ke6 Bd4 58. Rb8 Bc3 59. Rg8+ Kh6 60. Kf5 Bd2 61. Rg6+ 1-0

[Event "Mazowiec-chT 1718"]
[Site "Warsaw"]
[Date "2018.02.04"]
[Round "5.16"]
[White "Sacharewicz, Krzysztof"]
[Black "Kosny, Marek"]
[Result "1/2-1/2"]
[ECO "B02"]
[WhiteElo "1795"]
[BlackElo "1852"]
[PlyCount "84"]
[EventDate "2017.12.03"]
[EventType "team-tourn"]
[EventRounds "10"]
[EventCountry "POL"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. e4 Nf6 2. Nc3 d5 3. e5 d4 4. exf6 dxc3 5. fxg7 cxd2+ 6. Qxd2 Qxd2+ 7. Bxd2 Bxg7 8. 0-0-0 Nc6 9. Nf3 Bd7 10. Be3 0-0-0 11. Be2 f6 12. Rd2 a6 13. Rhd1 e5 14. Ne1 Bf5 15. Rxd8+ Rxd8 16. Rxd8+ Kxd8 17. Nd3 b6 18. g4 Be4 19. f3 Bd5 20. Nf2 a5 21. h4 Nd4 22. Bxd4 exd4 23. a4 Bh6+ 24. Kd1 Ke7 25. Ke1 c5 26. b3 Bf4 27. Kf1 h6 28. Kg2 Kd6 29. Nd3 Bd2 30. Nb2 Bc3 31. Nc4+ Kc6 32. Kf2 Bf7 33. Bd3 Bxc4 34. Bxc4 Bd2 35. Ke2 Bf4 36. Kd3 Bg3 37. h5 Kd6 38. Ke4 Be1 39. Kf5 Ke7 40. Ke4 Kd6 41. Kf5 Ke7 42. f4 Bd2 1/2-1/2

[Event "Warsaw YMCA Winter 194th"]
[Site "Warsaw"]
[Date "2018.02.02"]
[Round "4"]
[White "Kaminski, Jan"]
[Black "Kosny, Marek"]
[Result "1/2-1/2"]
[ECO "B31"]
[WhiteElo "1838"]
[BlackElo "1852"]
[PlyCount "163"]
[EventDate "2018.01.04"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "POL"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. Nf3 c5 2. e4 Nc6 3. Bb5 g6 4. 0-0 Bg7 5. Re1 Nf6 6. Nc3 0-0 7. d3 Nd4 8. Nxd4 cxd4 9. Ne2 a6 10. Bc4 d5 11. exd5 Nxd5 12. Ng3 e5 13. Qf3 Be6 14. Bd2 Rc8 15. Ne4 f6 16. c3 Nc7 17. cxd4 Bxc4 18. dxc4 Qxd4 19. Bb4 Qxb2 20. Bxf8 Rxf8 21. Qb3 Qxb3 22. axb3 Ne6 23. Nd6 Rb8 24. Ra5 f5 25. Rd5 Nf4 26. Rdd1 e4 27. Nxe4 fxe4 28. Rxe4 Nh5 29. Re7 Nf6 30. h3 Bf8 31. Rc7 a5 32. g4 g5 33. Rd3 h6 34. Rf3 Bd6 35. Rxf6 Bxc7 36. Rxh6 Kg7 37. Re6 Kf7 38. Rh6 Be5 39. Rb6 Bc7 40. Rb5 Kg6 41. Kg2 b6 42. c5 bxc5 43. Rxc5 Bd8 44. Rc6+ Kg7 45. Rc3 Be7 46. Re3 Bf6 47. Kg3 Rb4 48. f3 Rb5 49. Rd3 Be5+ 50. Kf2 Kf6 51. Ke3 Bf4+ 52. Kd4 Ke6 53. Kc4 Re5 54. Rd1 Re3 55. Rh1 Bg3 56. Ra1 Bc7 57. Rh1 Rxf3 58. h4 Rf4+ 59. Kc5 Rxg4 60. hxg5 Rxg5+ 61. Kc6 Be5 62. Re1 Kf5 63. Kb5 Bc3 64. Rc1 Ke4+ 65. Ka4 Kd3 66. Rh1 Rg2 67. Rh3+ Kc2 68. Rf3 Rg1 69. Rf2+ Bd2 70. Rh2 Ra1+ 71. Kb5 Ra3 72. Kc4 Ra2 73. Rg2 Rb2 74. Rf2 Rb1 75. Rg2 Rf1 76. Rg3 Rf8 77. Kb5 Rb8+ 78. Ka4 Rb4+ 79. Ka3 Re4 80. Rh3 Re3 81. Rxe3 Bxe3 82. b4 1/2-1/2

[Event "Warsaw YMCA Winter 194th"]
[Site "Warsaw"]
[Date "2018.01.25"]
[Round "3"]
[White "Kosny, Marek"]
[Black "Liberadzki, Slawomir"]
[Result "1/2-1/2"]
[ECO "A36"]
[WhiteElo "1852"]
[BlackElo "2042"]
[PlyCount "76"]
[EventDate "2018.01.04"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "POL"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. Nf3 c5 2. c4 Nc6 3. Nc3 g6 4. g3 Bg7 5. Bg2 e6 6. e4 Nge7 7. 0-0 0-0 8. d3 d6 9. Be3 b6 10. Qd2 Bb7 11. Bh6 Nd4 12. Bxg7 Nxf3+ 13. Bxf3 Kxg7 14. Rab1 Nc6 15. Ne2 Qf6 16. Bg2 Nd4 17. Nxd4 Qxd4 18. b4 Rad8 19. Qb2 Qxb2 20. Rxb2 Rd7 21. a4 cxb4 22. Rxb4 d5 23. cxd5 exd5 24. e5 Rc7 25. f4 Rc3 26. a5 Ba6 27. axb6 axb6 28. Rxb6 Bxd3 29. Rd1 Be4 30. Rd2 Rfc8 31. Bxe4 dxe4 32. Re2 Rc2 33. Kf2 Rxe2+ 34. Kxe2 Rc2+ 35. Ke3 Rxh2 36. Kxe4 h5 37. Rb7 Rh1 38. Kf3 Re1 1/2-1/2

[Event "Warsaw YMCA Winter 194th"]
[Site "Warsaw"]
[Date "2018.01.12"]
[Round "2"]
[White "Delega, Tomasz"]
[Black "Kosny, Marek"]
[Result "1/2-1/2"]
[ECO "B05"]
[WhiteElo "1940"]
[BlackElo "1852"]
[PlyCount "127"]
[EventDate "2018.01.04"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "POL"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 Bg4 5. Be2 e6 6. 0-0 Be7 7. c4 Nb6 8. exd6 cxd6 9. Nc3 0-0 10. b3 Nc6 11. Be3 d5 12. c5 Nc8 13. h3 Bxf3 14. Bxf3 Bf6 15. a3 N8e7 16. g4 Ng6 17. Bh1 Be7 18. f4 f5 19. b4 Qb8 20. Qd2 Qe8 21. Ne2 Bd8 22. gxf5 Nh4 23. fxe6 Qg6+ 24. Kh2 Qxe6 25. Nc3 Rf5 26. Bf2 Ng6 27. Rae1 Qd7 28. Bg3 Bc7 29. Qe3 Raf8 30. b5 Nce7 31. Qe6+ Qxe6 32. Rxe6 Kf7 33. Ree1 Ba5 34. Re3 Bc7 35. Ne2 h5 36. h4 Ke8 37. Ref3 Kd8 38. Bg2 R5f6 39. Bh3 Nf5 40. Bxf5 Rxf5 41. Kg2 Ne7 42. Re3 R5f6 43. Kh3 Nf5 44. Re5 Bxe5 45. dxe5 Rg6 46. Bf2 Ke7 47. c6 Kd8 48. cxb7 Kc7 49. Bxa7 Kxb7 50. Bf2 Rc8 51. Nd4 Rc3+ 52. Kh2 Nxd4 53. Bxd4 Rxa3 54. f5 Rg4 55. Rd1 Rxh4+ 56. Kg2 Rg4+ 57. Kh2 Rf3 58. f6 Rff4 59. fxg7 Rh4+ 60. Kg2 Rfg4+ 61. Kf3 Rxg7 62. e6 Rh3+ 63. Kf4 Rg4+ 64. Ke5 1/2-1/2

[Event "Mazowiec-chT 1718"]
[Site "Warsaw"]
[Date "2018.01.07"]
[Round "3.3"]
[White "Lukasik, Adam"]
[Black "Kosny, Marek"]
[Result "1/2-1/2"]
[ECO "D02"]
[WhiteElo "1949"]
[BlackElo "1852"]
[PlyCount "56"]
[EventDate "2017.12.03"]
[EventType "team-tourn"]
[EventRounds "10"]
[EventCountry "POL"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. c4 Bg4 4. Ne5 Bf5 5. Nc3 dxc4 6. e3 Nbd7 7. Nxd7 Qxd7 8. Bxc4 e6 9. 0-0 Be7 10. Qe2 0-0 11. e4 Bg6 12. Rd1 c6 13. a4 Bb4 14. f3 a6 15. Bg5 Ne8 16. Rac1 Qc7 17. Bh4 Bd6 18. h3 Bg3 19. Bxg3 Qxg3 20. Qf2 Qxf2+ 21. Kxf2 Nd6 22. Bb3 a5 23. g4 Rfd8 24. d5 exd5 25. exd5 c5 26. Re1 Kf8 27. Re3 f6 28. Ne2 b6 1/2-1/2

[Event "Warsaw YMCA Winter 194th"]
[Site "Warsaw"]
[Date "2018.01.04"]
[Round "1"]
[White "Chomiuk, Lukasz"]
[Black "Kosny, Marek"]
[Result "0-1"]
[ECO "D00"]
[WhiteElo "1809"]
[BlackElo "1852"]
[PlyCount "70"]
[EventDate "2018.01.04"]
[EventType "swiss"]
[EventRounds "10"]
[EventCountry "POL"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. d4 d5 2. f4 c5 3. e3 Nc6 4. Nf3 Bg4 5. c3 e6 6. Nbd2 Nf6 7. Bd3 Be7 8. h3 Bxf3 9. Nxf3 Ne4 10. 0-0 0-0 11. Bxe4 dxe4 12. Nd2 f5 13. Qb3 Qd7 14. Rd1 cxd4 15. exd4 Na5 16. Qc2 Rac8 17. Nf1 b5 18. a3 Nc4 19. b3 Nb6 20. Ne3 Bf6 21. Bb2 Nd5 22. Nxd5 exd5 23. a4 b4 24. c4 Qc7 25. Qd2 dxc4 26. Qxb4 Rb8 27. Qd2 Rxb3 28. Ba3 Rc8 29. Bc5 Rcb8 30. Rac1 Rd3 31. Qc2 Qf7 32. Rb1 Rd8 33. Rb4 Qd5 34. Rxd3 cxd3 35. Qc3 a5 0-1

[Event "Mazowiec-chT 1718"]
[Site "Warsaw"]
[Date "2017.12.03"]
[Round "2.13"]
[White "Kosny, Marek"]
[Black "Kaczmarska, Joanna"]
[Result "1/2-1/2"]
[ECO "D78"]
[WhiteElo "1852"]
[BlackElo "2037"]
[PlyCount "104"]
[EventDate "2017.12.03"]
[EventType "team-tourn"]
[EventRounds "10"]
[EventCountry "POL"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. Nf3 d5 2. d4 Nf6 3. g3 g6 4. Bg2 Bg7 5. 0-0 0-0 6. c4 c6 7. Nc3 dxc4 8. Ne5 Be6 9. e4 Nfd7 10. Nf3 Bg4 11. h3 Bxf3 12. Bxf3 e5 13. d5 Nb6 14. Be3 Qc8 15. g4 cxd5 16. Bxb6 axb6 17. Nxd5 Qc5 18. b3 b5 19. Qd2 Nc6 20. Rac1 Qd4 21. Qe2 Bh6 22. Rc2 Qa7 23. Rb2 Nd4 24. Qd1 cxb3 25. axb3 Qa3 26. Rb1 Kh8 27. Bg2 Rad8 28. Qd3 f6 29. Kh1 Rd6 30. f4 Rfd8 31. h4 Bg7 32. f5 Rc6 33. g5 gxf5 34. gxf6 Bxf6 35. Nxf6 Rxf6 36. exf5 Rh6 37. Qg3 Qe7 38. Rbe1 Rxh4+ 39. Kg1 Rg8 40. f6 Qc5 41. Qe3 Qc6 42. Rf2 Rhg4 43. Qh3 Rxg2+ 44. Rxg2 Nf3+ 45. Kf2 Nxe1 46. Rxg8+ Kxg8 47. Qg4+ Kf7 48. Qg7+ Ke6 49. Qe7+ Kf5 50. f7 Qf3+ 51. Kxe1 Qe3+ 52. Kf1 Qf3+ 1/2-1/2

[Event "Mazowiec-chT 1718"]
[Site "Warsaw"]
[Date "2017.12.03"]
[Round "1.13"]
[White "Szwaj, Jacek"]
[Black "Kosny, Marek"]
[Result "1-0"]
[ECO "B05"]
[WhiteElo "1897"]
[BlackElo "1852"]
[PlyCount "63"]
[EventDate "2017.12.03"]
[EventType "team-tourn"]
[EventRounds "10"]
[EventCountry "POL"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 Bg4 5. Be2 e6 6. 0-0 Be7 7. c4 Nb6 8. Nc3 0-0 9. h3 Bxf3 10. Bxf3 Nc6 11. exd6 cxd6 12. d5 Ne5 13. dxe6 fxe6 14. Bxb7 Rb8 15. Ba6 Nbxc4 16. Qe2 Qc7 17. b3 Nb6 18. Bb2 Bg5 19. Nb5 Qc5 20. Ba3 Qc6 21. Bxd6 Nf3+ 22. Kh1 e5 23. Bxb8 Nh4 24. Qg4 Nxg2 25. Qxg2 Rf3 26. Bxe5 Rxh3+ 27. Kg1 Qh6 28. f4 Be7 29. Qxg7+ Qxg7+ 30. Bxg7 Kxg7 31. Kg2 Rh6 32. Rad1 1-0

[Event "Warsaw YMCA Winter-A 179th"]
[Site "Warsaw"]
[Date "2017.03.24"]
[Round "11"]
[White "Kosny, Marek"]
[Black "Pesko, Tomasz"]
[Result "1-0"]
[ECO "E65"]
[WhiteElo "1842"]
[BlackElo "1823"]
[PlyCount "99"]
[EventDate "2017.01.13"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "POL"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. Nf3 g6 2. c4 Bg7 3. Nc3 d6 4. g3 c5 5. d4 cxd4 6. Nxd4 Nf6 7. Bg2 a6 8. 0-0 0-0 9. h3 Qc7 10. b3 Nc6 11. Nc2 Qa5 12. Bd2 Qc7 13. Rc1 e6 14. e4 b6 15. Ne3 Bb7 16. Ncd5 Qd8 17. Nf4 Rc8 18. Qe2 Qe7 19. Bc3 Rfd8 20. Qb2 Ne5 21. Qb1 Ned7 22. Rfd1 Nc5 23. f3 Nfd7 24. Bxg7 Kxg7 25. Qc2 a5 26. Ne2 Ne5 27. f4 Nc6 28. Nc3 Nb4 29. Qe2 Rd7 30. Rd2 Bc6 31. Rcd1 Rcd8 32. Nc2 Nxc2 33. Rxc2 e5 34. f5 g5 35. Qe3 f6 36. Rcd2 Rb8 37. Nd5 Qd8 38. Bf1 b5 39. cxb5 Bxb5 40. Bxb5 Rxb5 41. Qe2 Qb8 42. h4 Rbb7 43. hxg5 fxg5 44. Qg4 Qd8 45. f6+ Kh8 46. Ne7 Qf8 47. Rxd6 Rxd6 48. Rxd6 Rb4 49. Rc6 Rxe4 50. Rc8 1-0

[Event "Warsaw YMCA Winter-A 179th"]
[Site "Warsaw"]
[Date "2017.03.17"]
[Round "10"]
[White "Szymczak, Rafal"]
[Black "Kosny, Marek"]
[Result "1/2-1/2"]
[ECO "A02"]
[WhiteElo "1995"]
[BlackElo "1842"]
[PlyCount "25"]
[EventDate "2017.01.13"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "POL"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. f4 d6 2. Nf3 Nc6 3. d4 g6 4. d5 Nb8 5. e4 Bg7 6. c4 e6 7. Nc3 c6 8. Bd3 exd5 9. cxd5 Ne7 10. dxc6 bxc6 11. 0-0 0-0 12. Kh1 Na6 13. Be3 1/2-1/2

[Event "Warsaw YMCA Winter-A 179th"]
[Site "Warsaw"]
[Date "2017.03.10"]
[Round "9"]
[White "Kosny, Marek"]
[Black "Piotrowski, Arkadiusz"]
[Result "0-1"]
[ECO "E08"]
[WhiteElo "1842"]
[BlackElo "1955"]
[PlyCount "72"]
[EventDate "2017.01.13"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "POL"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 c6 3. Nc3 d5 4. d4 e6 5. g3 Be7 6. Bg2 0-0 7. 0-0 Nbd7 8. b3 b6 9. Qc2 Bb7 10. a4 a5 11. Nd2 Qc8 12. Bb2 c5 13. Nb5 cxd4 14. Nxd4 dxc4 15. Nxc4 Bxg2 16. Kxg2 Qb7+ 17. f3 Rac8 18. e4 Ne5 19. Rac1 Rfd8 20. Qe2 Nxc4 21. Rxc4 Rxc4 22. Qxc4 Bc5 23. Re1 Qd7 24. Rc1 h5 25. Ne2 Qd2 26. Rc2 Qe1 27. Nf4 Qg1+ 28. Kh3 Nh7 29. Nxh5 Ng5+ 30. Kg4 Qe3 31. Bxg7 Nxf3 32. Bf6 Rd4 33. Bxd4 Qxe4+ 34. Nf4 Nxd4 35. Rc3 Qf5+ 36. Kh4 Be7# 0-1

[Event "Warsaw YMCA Winter-A 179th"]
[Site "Warsaw"]
[Date "2017.03.02"]
[Round "6"]
[White "Kosny, Marek"]
[Black "Markiewicz, Michal"]
[Result "1/2-1/2"]
[ECO "A37"]
[WhiteElo "1842"]
[BlackElo "1861"]
[PlyCount "63"]
[EventDate "2017.01.13"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "POL"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. Nf3 c5 2. c4 Nc6 3. Nc3 g6 4. g3 Bg7 5. Bg2 e6 6. 0-0 Nge7 7. e4 d5 8. cxd5 exd5 9. exd5 Nb4 10. d4 Nbxd5 11. Nxd5 Qxd5 12. dxc5 0-0 13. Bf4 Qxd1 14. Raxd1 Bxb2 15. Bd6 Re8 16. Rd2 Bf6 17. Re1 Be6 18. Rb1 b6 19. Nd4 Rac8 20. Nxe6 fxe6 21. cxb6 axb6 22. Rxb6 Rc1+ 23. Bf1 Nd5 24. Rb8 Rxb8 25. Bxb8 Bc3 26. Re2 Kf7 27. Be5 Bxe5 28. Rxe5 Nc3 29. Ra5 Ra1 30. Ra7+ Kf6 31. Ra3 Nb1 32. Rd3 1/2-1/2

[Event "Warsaw YMCA Winter-A 179th"]
[Site "Warsaw"]
[Date "2017.02.24"]
[Round "7"]
[White "Rozowski, Marcin"]
[Black "Kosny, Marek"]
[Result "1/2-1/2"]
[ECO "B38"]
[WhiteElo "1992"]
[BlackElo "1842"]
[PlyCount "78"]
[EventDate "2017.01.13"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "POL"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. Nf3 c5 2. c4 Nc6 3. d4 cxd4 4. Nxd4 g6 5. e4 Bg7 6. Be3 Nf6 7. Nc3 0-0 8. Be2 d6 9. 0-0 Bd7 10. Qd2 Ng4 11. Bxg4 Bxg4 12. f3 Bd7 13. Rac1 Re8 14. Rfd1 b6 15. Nd5 Rb8 16. b3 Qc8 17. Nxc6 Qxc6 18. Bd4 Bxd4+ 19. Qxd4 f6 20. f4 Qc5 21. e5 Qxd4+ 22. Rxd4 dxe5 23. fxe5 fxe5 24. Re4 Bc6 25. Rxe5 Bxd5 26. Rxd5 Rb7 27. Kf2 Rc8 28. Ke3 Rc6 29. Rcd1 Kf7 30. R1d4 Rbc7 31. Rd7 Ke6 32. Rxc7 Rxc7 33. Rh4 h5 34. Rd4 Kf5 35. Rd8 Rc6 36. Rd7 Re6+ 37. Kf2 a5 38. Rd5+ Ke4 39. g3 Rf6+ 1/2-1/2

[Event "Warsaw YMCA Winter-A 179th"]
[Site "Warsaw"]
[Date "2017.02.10"]
[Round "5"]
[White "Praczukowski, Stanislaw"]
[Black "Kosny, Marek"]
[Result "1/2-1/2"]
[ECO "B31"]
[WhiteElo "2065"]
[BlackElo "1842"]
[PlyCount "120"]
[EventDate "2017.01.13"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "POL"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. Nf3 c5 2. e4 Nc6 3. Bb5 g6 4. Bxc6 bxc6 5. 0-0 Bg7 6. e5 f6 7. Re1 fxe5 8. Nxe5 Nf6 9. d4 cxd4 10. Qxd4 0-0 11. Qc4+ e6 12. Nd2 Qa5 13. Ndf3 Rb8 14. Bd2 Qb5 15. Qxb5 Rxb5 16. b3 c5 17. c4 Rb6 18. Bc3 d6 19. Nd3 e5 20. Nb2 Rb7 21. h3 Bh6 22. Rad1 Ne8 23. Nd2 Rbf7 24. Ne4 Bb7 25. f3 Bxe4 26. Rxe4 Rb7 27. Bd2 Bxd2 28. Rxd2 Kf7 29. Nd3 g5 30. Re1 Rb6 31. Nf2 Nf6 32. Red1 Ke6 33. Kf1 a5 34. Ng4 Nxg4 35. hxg4 a4 36. bxa4 Ra8 37. Kf2 Rxa4 38. Rh1 Rxc4 39. Rh6+ Kf7 40. Rhxd6 Rxd6 41. Rxd6 Rc2+ 42. Ke3 Rxa2 43. Ke4 Rxg2 44. Kf5 Rf2 45. Rd7+ Ke8 46. Rd3 c4 47. Rc3 h6 48. Kxe5 Kf7 49. Kf5 Ra2 50. Rxc4 Ra5+ 51. Ke4 Ra6 52. Rc5 Re6+ 53. Re5 Ra6 54. Rd5 Re6+ 55. Re5 Ra6 56. Rf5+ Kg7 57. Rb5 Ra4+ 58. Ke5 Rf4 59. Rb7+ Kg6 60. Rb3 Kg7 1/2-1/2

[Event "Warsaw YMCA Winter-A 179th"]
[Site "Warsaw"]
[Date "2017.02.03"]
[Round "4"]
[White "Kosny, Marek"]
[Black "Kasperkiewicz, Pawel"]
[Result "0-1"]
[ECO "A34"]
[WhiteElo "1842"]
[BlackElo "1936"]
[PlyCount "44"]
[EventDate "2017.01.13"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "POL"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 c5 3. g3 d5 4. cxd5 Nxd5 5. Bg2 Nc6 6. 0-0 e5 7. Nc3 Nc7 8. d3 Be7 9. Bd2 0-0 10. Rc1 Rb8 11. Ne4 Ne6 12. Bc3 f6 13. e3 Kh8 14. Qe2 b6 15. Rfd1 Ba6 16. Qc2 Rc8 17. g4 Qd7 18. Bh3 Ncd4 19. exd4 Nf4 20. Bd2 Nxh3+ 21. Kg2 Qxg4+ 22. Ng3 Bb7 0-1

[Event "Warsaw YMCA Winter-A 179th"]
[Site "Warsaw"]
[Date "2017.01.27"]
[Round "3"]
[White "Choroszej, Aleksander"]
[Black "Kosny, Marek"]
[Result "1/2-1/2"]
[ECO "D37"]
[WhiteElo "1964"]
[BlackElo "1842"]
[PlyCount "100"]
[EventDate "2017.01.13"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "POL"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 Be7 5. Bf4 0-0 6. e3 a6 7. c5 Nbd7 8. Bd3 Nh5 9. 0-0 Nxf4 10. exf4 Re8 11. Re1 Nf8 12. g3 Bf6 13. Ne5 g6 14. h4 Bg7 15. h5 f6 16. Nf3 e5 17. fxe5 Bg4 18. hxg6 hxg6 19. Be2 c6 20. exf6 Qxf6 21. Ne5 Bf5 22. Qd2 Rad8 23. Rad1 g5 24. Bd3 Ne6 25. Bxf5 Qxf5 26. Qd3 Qxd3 27. Rxd3 Nxc5 28. Rde3 Nd7 29. Nxd7 Rxe3 30. fxe3 Rxd7 31. g4 Bf6 32. Kg2 Re7 33. Rf1 Kf7 34. Rf3 Kg6 35. b3 Rh7 36. Rh3 Rd7 37. Na4 Bd8 38. Nc5 Re7 39. Kf2 Ba5 40. Nd3 Bc7 41. Ke2 Bd6 42. Kf2 Re4 43. Kf3 Re8 44. Nc5 b6 45. Na4 Rb8 46. Rh1 b5 47. Nc5 Rf8+ 48. Ke2 Re8 49. Kf3 a5 50. Nd3 Rb8 1/2-1/2

[Event "Warsaw YMCA Winter-A 179th"]
[Site "Warsaw"]
[Date "2017.01.20"]
[Round "2"]
[White "Kosny, Marek"]
[Black "Wnuk Lipinski, Pawel"]
[Result "0-1"]
[ECO "A37"]
[WhiteElo "1842"]
[BlackElo "1906"]
[PlyCount "84"]
[EventDate "2017.01.13"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "POL"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. Nf3 c5 2. c4 Nc6 3. Nc3 g6 4. g3 Bg7 5. Bg2 e6 6. 0-0 Nge7 7. d3 0-0 8. Bf4 d5 9. cxd5 Nxd5 10. Nxd5 exd5 11. Qd2 b6 12. Bh6 Qf6 13. Rab1 Bb7 14. a3 a5 15. Bf4 Rfe8 16. Rfe1 Nd4 17. b4 axb4 18. axb4 Qe7 19. bxc5 bxc5 20. Be3 Ne6 21. Bh6 Ra7 22. Bxg7 Kxg7 23. Rec1 d4 24. e3 dxe3 25. fxe3 f6 26. Qc3 Ba8 27. Rb6 Rd7 28. e4 Rc8 29. Bh3 Rd6 30. Rcb1 Rcd8 31. Qa5 Nd4 32. Ne1 c4 33. Rxd6 Qxd6 34. Rb6 Qc7 35. Bf1 Rb8 36. Ra6 Qxa5 37. Rxa5 c3 38. Ra2 Rb1 39. Nc2 Rb2 40. Rxa8 Rxc2 41. Rc8 Nf3+ 42. Kh1 Rxh2# 0-1

[Event "Mazowiec-chT op 1617"]
[Site "Warsaw"]
[Date "2017.01.15"]
[Round "6.10"]
[White "Kosny, Marek"]
[Black "Niedzwiecki, Marek"]
[Result "1-0"]
[ECO "D15"]
[WhiteElo "1842"]
[BlackElo "1742"]
[PlyCount "135"]
[EventDate "2016.12.11"]
[EventType "team-swiss"]
[EventRounds "10"]
[EventCountry "POL"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 d5 3. d4 c6 4. Nc3 Bf5 5. g3 dxc4 6. Bg2 Nbd7 7. a4 a5 8. Nh4 e6 9. Nxf5 exf5 10. Qc2 g6 11. 0-0 Bg7 12. Bg5 0-0 13. d5 h6 14. Bxf6 Qxf6 15. dxc6 bxc6 16. Nd1 Nb6 17. Rc1 Rac8 18. Ne3 Rfd8 19. Nxc4 Nxc4 20. Qxc4 Rd4 21. Qa6 Qe6 22. Qxa5 Qxe2 23. Rxc6 Rcd8 24. Qa6 Qxb2 25. Rc8 Qb4 26. a5 Kh7 27. Rxd8 Rxd8 28. Qb6 Qd2 29. a6 Rd6 30. Qb7 Rd7 31. Qb5 Ra7 32. Bb7 Bd4 33. Qb3 Kg7 34. Kg2 f4 35. Qf3 fxg3 36. hxg3 Qa2 37. Rd1 Qb2 38. Qf4 Be5 39. Qe3 Rxb7 40. axb7 Qxb7+ 41. Qf3 Qxf3+ 42. Kxf3 h5 43. Rd7 Bc3 44. Rc7 Ba5 45. Rb7 Be1 46. Ke2 Bc3 47. f3 Bf6 48. f4 g5 49. Kf3 h4 50. gxh4 gxf4 51. Kg4 Be5 52. Kf5 Bd6 53. h5 f3 54. h6+ Kg8 55. Rb3 f2 56. Rf3 Bc5 57. Kf6 Bd4+ 58. Kg5 Be3+ 59. Kh5 Bc5 60. Kg4 f6 61. Kh5 Kh7 62. Rf5 Be3 63. Rxf6 f1Q 64. Rxf1 Bxh6 65. Rf7+ Bg7 66. Kg5 Kh8 67. Kg6 Bf8 68. Rxf8# 1-0

[Event "Mazowiec-chT op 1617"]
[Site "Warsaw"]
[Date "2017.01.15"]
[Round "5.10"]
[White "Niedzwiecki, Marek"]
[Black "Kosny, Marek"]
[Result "0-1"]
[ECO "B02"]
[WhiteElo "1742"]
[BlackElo "1842"]
[PlyCount "80"]
[EventDate "2016.12.11"]
[EventType "team-swiss"]
[EventRounds "10"]
[EventCountry "POL"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. e4 Nf6 2. Nc3 d5 3. e5 d4 4. exf6 dxc3 5. fxg7 cxd2+ 6. Bxd2 Bxg7 7. c3 Nc6 8. Qf3 Bd7 9. Qg3 Be5 10. Bf4 Bxf4 11. Qxf4 e5 12. Qf3 Qe7 13. Bd3 0-0-0 14. 0-0-0 f5 15. Qe3 Rhg8 16. g3 Qf7 17. b3 Be6 18. Kb2 Bd5 19. f3 Kb8 20. Ne2 Qf6 21. Rhf1 h5 22. Qc5 Ne7 23. Kc2 Rd6 24. c4 Be6 25. Nc3 a6 26. Rfe1 Nc6 27. Ne2 b6 28. Qa3 a5 29. Kb1 Nb4 30. Nc1 h4 31. gxh4 Rg2 32. c5 Rd4 33. cxb6 cxb6 34. Qa4 Bd7 35. Bb5 e4 36. Rxd4 Qxd4 37. Ne2 Qd2 38. Rg1 Rxg1+ 39. Nxg1 Qc2+ 40. Ka1 Qc1# 0-1

[Event "Warsaw YMCA Winter-A 179th"]
[Site "Warsaw"]
[Date "2017.01.13"]
[Round "1"]
[White "Koziol, Pawel"]
[Black "Kosny, Marek"]
[Result "1-0"]
[ECO "A34"]
[WhiteElo "1915"]
[BlackElo "1842"]
[PlyCount "121"]
[EventDate "2017.01.13"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "POL"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. Nf3 c5 2. g3 g6 3. Bg2 Bg7 4. 0-0 Nf6 5. c4 Nc6 6. Nc3 d5 7. cxd5 Nxd5 8. Qb3 Nxc3 9. bxc3 0-0 10. d3 Rb8 11. Bf4 e5 12. Be3 b6 13. Ng5 Ne7 14. a4 h6 15. Nf3 Be6 16. Qa3 Nf5 17. Bd2 c4 18. e4 Nd6 19. d4 Nxe4 20. Be3 exd4 21. Nxd4 Bd5 22. Rad1 Qf6 23. Nb5 Ba8 24. Bd4 Qf5 25. Bxg7 Kxg7 26. Rd4 Ng5 27. f3 Rbd8 28. Nd6 Qe5 29. Nxc4 Qe6 30. Rf4 Rc8 31. Qb4 Bd5 32. Nd6 Qe3+ 33. Kh1 Rxc3 34. Ne4 Rc1 35. Qb2+ f6 36. Qxc1 Qxc1 37. Rxc1 Ne6 38. Rh4 g5 39. Nxg5 hxg5 40. Rb4 Nc5 41. Rd1 Bb3 42. Ra1 Rc8 43. h4 Bd5 44. f4 Bxg2+ 45. Kxg2 gxh4 46. gxh4 Nb7 47. Re1 Rc7 48. Rbe4 Kf7 49. Kf3 Nd6 50. Rb4 Nf5 51. Kg4 Rc5 52. Rb5 Nh6+ 53. Kf3 Rc3+ 54. Re3 Rc1 55. Rd3 Rf1+ 56. Ke4 Rh1 57. Rd7+ Kg6 58. h5+ Rxh5 59. Rxh5 Kxh5 60. Rxa7 f5+ 61. Kf3 1-0

[Event "Warsaw YMCA Winter-A 163rd"]
[Site "Warsaw"]
[Date "2016.03.23"]
[Round "12"]
[White "Choroszej, Aleksander"]
[Black "Kosny, Marek"]
[Result "1/2-1/2"]
[ECO "D37"]
[WhiteElo "1937"]
[BlackElo "1904"]
[PlyCount "52"]
[EventDate "2016.01.08"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "POL"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Be7 4. Nf3 d5 5. Bf4 0-0 6. e3 a6 7. c5 Nbd7 8. Bd3 g6 9. h3 Re8 10. 0-0 c6 11. b4 b6 12. Bh2 Nh5 13. a4 Bf6 14. Qc2 e5 15. Nxe5 Nxe5 16. dxe5 Bxe5 17. Bxe5 Rxe5 18. Ne2 Qh4 19. Qc3 Rg5 20. Qd4 Qxh3 21. Be4 bxc5 22. bxc5 Qg4 23. f4 Qxe2 24. fxg5 dxe4 25. Qd8+ Kg7 26. Qd4+ Kg8 1/2-1/2

[Event "Warsaw YMCA Winter-A 163rd"]
[Site "Warsaw"]
[Date "2016.03.10"]
[Round "10"]
[White "Sielicki, Tomasz"]
[Black "Kosny, Marek"]
[Result "1-0"]
[ECO "D37"]
[WhiteElo "1975"]
[BlackElo "1904"]
[PlyCount "39"]
[EventDate "2016.01.08"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "POL"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 Nbd7 5. Bf4 dxc4 6. e4 Bb4 7. Qc2 b5 8. e5 Nd5 9. Bg5 f6 10. exf6 N7xf6 11. Be2 Bd7 12. Ne5 c6 13. Bh5+ Ke7 14. 0-0 Bxc3 15. bxc3 Qa5 16. Rfe1 Qxc3 17. Qe4 Rae8 18. Bxe8 Rxe8 19. Qxh7 Kd6 20. Bxf6 1-0

[Event "Warsaw YMCA Winter-A 163rd"]
[Site "Warsaw"]
[Date "2016.03.08"]
[Round "13"]
[White "Kosny, Marek"]
[Black "Sanz Losada, Victoriano"]
[Result "0-1"]
[ECO "E62"]
[WhiteElo "1904"]
[BlackElo "2072"]
[PlyCount "68"]
[EventDate "2016.01.08"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "POL"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 g6 3. g3 Bg7 4. Nf3 0-0 5. Bg2 d6 6. 0-0 Nc6 7. d4 Bg4 8. h3 Bxf3 9. Bxf3 Nd7 10. Bxc6 bxc6 11. e4 Qb8 12. b3 e5 13. Be3 exd4 14. Bxd4 Bxd4 15. Qxd4 Qb6 16. Rad1 Rfe8 17. f3 a5 18. Rf2 Qxd4 19. Rxd4 Nc5 20. Rdd2 Rab8 21. Ne2 a4 22. bxa4 Nxa4 23. Nd4 Rb6 24. Nb3 Re5 25. Rfe2 Nc5 26. Nd4 Re8 27. h4 h5 28. Kf2 Ra8 29. e5 Ra4 30. exd6 cxd6 31. Nb3 Nxb3 32. axb3 Rxb3 33. Rxd6 Rxc4 34. Rd7 Rcc3 0-1

[Event "Warsaw YMCA Winter-A 163rd"]
[Site "Warsaw"]
[Date "2016.02.25"]
[Round "8"]
[White "Zurkowski, Andrzej"]
[Black "Kosny, Marek"]
[Result "1-0"]
[ECO "E01"]
[WhiteElo "2101"]
[BlackElo "1904"]
[PlyCount "53"]
[EventDate "2016.01.08"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "POL"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. g3 Nbd7 5. Bg2 c5 6. cxd5 Nxd5 7. 0-0 Be7 8. e4 Nc7 9. Bf4 0-0 10. d5 exd5 11. exd5 Bf6 12. Nc3 Re8 13. Qd2 Nb6 14. Rad1 Nc4 15. Qc2 Nd6 16. Bxd6 Qxd6 17. Ne4 Qe7 18. Nxf6+ Qxf6 19. Qxc5 Bg4 20. Qxc7 Bxf3 21. Bxf3 Qxf3 22. d6 h5 23. d7 Red8 24. Rd4 Rab8 25. Rc1 Qf6 26. Qxb8 Rxb8 27. Rc8+ 1-0

[Event "Warsaw YMCA Winter-A 163rd"]
[Site "Warsaw"]
[Date "2016.02.18"]
[Round "6"]
[White "Bajkowski, Marcin"]
[Black "Kosny, Marek"]
[Result "1/2-1/2"]
[ECO "B05"]
[WhiteElo "1936"]
[BlackElo "1904"]
[PlyCount "173"]
[EventDate "2016.01.08"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "POL"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 Bg4 5. Be2 g6 6. h3 Bxf3 7. Bxf3 c6 8. 0-0 Bg7 9. Qe2 0-0 10. Bxd5 cxd5 11. f4 Nc6 12. c3 Rb8 13. Na3 a6 14. Nc2 b5 15. Bd2 a5 16. exd6 Qxd6 17. f5 Rb7 18. Bf4 Qd7 19. fxg6 hxg6 20. a3 b4 21. axb4 axb4 22. Kh1 bxc3 23. bxc3 Rb3 24. c4 Rb2 25. Qd3 dxc4 26. Qxc4 Nxd4 27. Rad1 Qb7 28. Ne3 e5 29. Bg5 Nf5 30. Qg4 Nxe3 31. Bxe3 Qc6 32. Rc1 Rc2 33. Rb1 f5 34. Qf3 f4 35. Qxc6 Rxc6 36. Bd2 Rc2 37. Bb4 Ra8 38. Rbc1 Rb2 39. Bc3 Re2 40. Rfe1 Raa2 41. Rxe2 Rxe2 42. Re1 Rxe1+ 43. Bxe1 e4 44. Kg1 Kf7 45. Kf2 Ke6 46. Ke2 Be5 47. Bh4 Kf5 48. Bf2 g5 49. Be1 g4 50. hxg4+ Kxg4 51. Bf2 Bd6 52. Be1 Bc5 53. Bd2 Kg3 54. Kf1 Be7 55. Be1+ Kh2 56. Bc3 Bd6 57. Bf6 Bc5 58. Be5 Kg3 59. Bc7 Bb4 60. Be5 Kg4 61. Ke2 Kf5 62. Bc7 Bc5 63. Bb8 Kg4 64. Be5 Be3 65. Bd6 Kg3 66. Kf1 Bc1 67. Bc7 Bb2 68. Bd6 Bd4 69. Bc7 Kg4 70. Ke2 Bf6 71. Bd6 Bh4 72. Bc7 Bg3 73. Bb6 Kf5 74. Bd4 Ke6 75. Bb6 Kd5 76. Bd8 Kd6 77. Bf6 Ke6 78. Bd8 Kf5 79. Bb6 Kg4 80. Bd4 Bh4 81. Be5 Bg5 82. Bd6 Kg3 83. Kf1 e3 84. Bc7 Bh6 85. Bd6 Kh2 86. Be5 Kh1 87. Bd6 1/2-1/2

[Event "Warsaw YMCA Winter-A 163rd"]
[Site "Warsaw"]
[Date "2016.02.17"]
[Round "7"]
[White "Kosny, Marek"]
[Black "Kielar, Maciej"]
[Result "0-1"]
[ECO "A37"]
[WhiteElo "1904"]
[BlackElo "2102"]
[PlyCount "80"]
[EventDate "2016.01.08"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "POL"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. Nf3 g6 2. c4 Bg7 3. Nc3 d6 4. g3 c5 5. Bg2 Nc6 6. 0-0 e6 7. Rb1 Nge7 8. a3 b6 9. b4 Bb7 10. e3 Qd7 11. Ne2 0-0 12. Bb2 e5 13. d4 cxd4 14. exd4 Qf5 15. Nh4 Qc8 16. c5 dxc5 17. dxc5 bxc5 18. bxc5 Rb8 19. Qa4 Ba6 20. Rfe1 Bd3 21. Nc3 Bxb1 22. Rxb1 Nd4 23. Qxa7 Qe6 24. Nf3 Nec6 25. Qa6 Qf5 26. Nd2 Qc2 27. Bxc6 Qxd2 28. Na4 Qc2 29. Rf1 Rxb2 30. Nxb2 Nxc6 31. Qxc6 Qxb2 32. a4 Qc3 33. Rd1 e4 34. Qxe4 Qxc5 35. Rd5 Qc6 36. a5 Re8 37. Qf3 Re1+ 38. Kg2 Qc4 39. Rd8+ Bf8 40. Rd7 Qf1# 0-1

[Event "Warsaw YMCA Winter-A 163rd"]
[Site "Warsaw"]
[Date "2016.02.03"]
[Round "5"]
[White "Kosny, Marek"]
[Black "Rozycki, Bartlomiej"]
[Result "0-1"]
[ECO "E19"]
[WhiteElo "1904"]
[BlackElo "2174"]
[PlyCount "104"]
[EventDate "2016.01.08"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "POL"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 e6 3. Nc3 b6 4. g3 Bb7 5. Bg2 Be7 6. 0-0 0-0 7. d4 Ne4 8. Qc2 Nxc3 9. bxc3 c5 10. Ng5 Bxg5 11. Bxb7 Bxc1 12. Bxa8 Bg5 13. Be4 g6 14. Rad1 Qc7 15. f4 Bf6 16. d5 Qc8 17. Rd3 e5 18. f5 d6 19. Rdf3 g5 20. g4 Qa6 21. Qb3 Qa5 22. Rh3 Kg7 23. Rh5 h6 24. Qb2 Nd7 25. h4 gxh4 26. Qd2 Rh8 27. g5 hxg5 28. Rxg5+ Kf8 29. Rg2 Qa4 30. Bd3 e4 31. Qc2 Qa6 32. Bxe4 Qxc4 33. Bd3 Qxc3 34. Qxc3 Bxc3 35. e3 Nf6 36. Rc1 Be5 37. e4 h3 38. Rgc2 h2+ 39. Kh1 Rh3 40. Rd1 Nh5 41. Rg2 Nf4 42. Bf1 Nxg2 43. Bxg2 Re3 44. Rf1 Re2 45. a3 c4 46. Rf3 c3 47. f6 c2 48. Rf1 Bf4 49. Rxf4 c1Q+ 50. Rf1 Re1 51. Rxe1 Qxe1+ 52. Kxh2 Qh4+ 0-1

[Event "Warsaw YMCA Winter-A 163rd"]
[Site "Warsaw"]
[Date "2016.01.27"]
[Round "3"]
[White "Sanz Wawer, Daniel"]
[Black "Kosny, Marek"]
[Result "1-0"]
[ECO "D36"]
[WhiteElo "2119"]
[BlackElo "1904"]
[PlyCount "115"]
[EventDate "2016.01.08"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "POL"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5 exd5 5. Bg5 Be7 6. e3 c6 7. Bd3 Nbd7 8. Nge2 0-0 9. Qc2 Re8 10. 0-0 Nf8 11. Rab1 g6 12. b4 Ne6 13. Bh4 Ng7 14. b5 Bf5 15. bxc6 bxc6 16. Rb7 Ng4 17. Rxe7 Rxe7 18. h3 Nh6 19. e4 dxe4 20. Nxe4 Rc8 21. Rc1 Bxe4 22. Bxe4 Nhf5 23. Bxe7 Qxe7 24. Bxc6 Rxc6 25. Qxc6 Qxe2 26. d5 Ne8 27. a4 Qe7 28. Kf1 Ned6 29. Re1 Qf6 30. Qa8+ Kg7 31. Qxa7 Ne4 32. Kg1 Nfd6 33. a5 Qc3 34. Rd1 Nb5 35. Qb6 Qc2 36. Re1 Ned6 37. a6 Qd2 38. Rb1 Qxd5 39. a7 Qa2 40. Rd1 Qxa7 41. Qxa7 Nxa7 42. Rxd6 Nc8 43. Rd7 Kf6 44. f3 Ke6 45. Rc7 Ne7 46. Kf2 h6 47. Ra7 Nf5 48. g4 Nd6 49. Ke3 Kd5 50. Ra8 Ke5 51. f4+ Kf6 52. Ra6 Ke7 53. Kd4 f5 54. Kd5 Ne8 55. Rxg6 fxg4 56. hxg4 Kf7 57. Rxh6 Nf6+ 58. Rxf6+ 1-0

[Event "Mazowiec-chT 1516"]
[Site "Poland"]
[Date "2016.01.24"]
[Round "4.7"]
[White "Fedorczyk, Krzysztof"]
[Black "Kosny, Marek"]
[Result "1-0"]
[ECO "B03"]
[WhiteElo "1750"]
[BlackElo "1912"]
[PlyCount "145"]
[EventDate "2015.12.13"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "POL"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]
[WhiteTeam "Warszawa Entropia"]
[BlackTeam "Zielonka Zieloni II"]
[WhiteTeamCountry "POL"]
[BlackTeamCountry "POL"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. c4 Nb6 5. exd6 cxd6 6. Nc3 g6 7. Be3 Bg7 8. Bd3 0-0 9. Nge2 Nc6 10. 0-0 Bg4 11. f3 Bd7 12. b3 e6 13. Rc1 d5 14. c5 Nc8 15. Bb1 b6 16. Nb5 bxc5 17. dxc5 Rb8 18. Nbd4 e5 19. Nxc6 Bxc6 20. Qd2 Re8 21. Bg5 f6 22. Bh6 Bh8 23. b4 Ne7 24. Ng3 Qd7 25. a3 Bg7 26. Ba2 Kf8 27. Rfd1 Red8 28. h4 Nf5 29. Nxf5 Qxf5 30. Bb1 Qh5 31. Bxg7+ Kxg7 32. Qf2 Qh6 33. Bd3 e4 34. fxe4 dxe4 35. Bc4 Rb7 36. Rb1 e3 37. Qg3 Rd2 38. Rxd2 exd2 39. Rf1 Ba4 40. Qf3 Qxh4 41. Qxb7+ Kh6 42. Qf3 d1Q 43. Qe3+ g5 44. Rxd1 Bxd1 45. Qh3 Qxh3 46. gxh3 Bf3 47. b5 Kg7 48. c6 Kf8 49. c7 Bb7 50. Be6 Ke7 51. c8Q Bxc8 52. Bxc8 Kd6 53. a4 Kc5 54. Kf2 Kb4 55. Bd7 h5 56. Ke3 f5 57. Kd4 g4 58. Bxf5 gxh3 59. Bxh3 Kxa4 60. Kc5 Ka5 61. Kc6 h4 62. Bd7 Kb4 63. Bh3 Kc4 64. Bg4 Kb4 65. Be6 Kc3 66. Kc5 Kd3 67. Kc6 Kd4 68. Kb7 Kc5 69. Ka6 Kb4 70. Bh3 Kc4 71. Bf1+ Kc5 72. Kxa7 h3 73. b6 1-0

[Event "Warsaw YMCA Winter-A 163rd"]
[Site "Warsaw"]
[Date "2016.01.21"]
[Round "4"]
[White "Goslawski, Michal"]
[Black "Kosny, Marek"]
[Result "1-0"]
[ECO "E08"]
[WhiteElo "2113"]
[BlackElo "1904"]
[PlyCount "99"]
[EventDate "2016.01.08"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "POL"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. c4 e6 4. g3 Be7 5. Bg2 0-0 6. 0-0 c6 7. Qc2 Nbd7 8. b3 Re8 9. Nc3 Nf8 10. Rd1 Ng6 11. e4 dxe4 12. Nxe4 Nxe4 13. Qxe4 Bf6 14. Bb2 Bd7 15. Qc2 Qa5 16. Bc3 Qf5 17. Qb2 Rad8 18. Rd2 e5 19. dxe5 Nxe5 20. Nxe5 Bxe5 21. Rad1 Bxc3 22. Qxc3 Re7 23. Qb4 Rde8 24. Qxb7 Re1+ 25. Bf1 Rxd1 26. Rxd1 Be6 27. Qxc6 Rf8 28. Qd6 h5 29. h4 Qa5 30. Qd2 Qc7 31. Be2 Qe5 32. Bf3 g6 33. Qd4 Qa5 34. Rd2 Re8 35. c5 Rc8 36. c6 Qf5 37. Be4 Qb5 38. Qd3 Qe5 39. Bg2 Bg4 40. Kh2 a5 41. Qd4 Qe1 42. Qe3 Qa1 43. Qc5 a4 44. b4 Qf6 45. b5 Bf3 46. Bxf3 Qxf3 47. c7 Kg7 48. b6 Re8 49. c8Q Re1 50. Qc3+ 1-0

[Event "Warsaw YMCA Winter-A 163rd"]
[Site "Warsaw"]
[Date "2016.01.13"]
[Round "2"]
[White "Kosny, Marek"]
[Black "Delega, Tomasz"]
[Result "1-0"]
[ECO "A40"]
[WhiteElo "1904"]
[BlackElo "2031"]
[PlyCount "51"]
[EventDate "2016.01.08"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "POL"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. c4 b6 2. Nc3 Bb7 3. d4 e6 4. e4 Bb4 5. Bd3 f5 6. f3 fxe4 7. fxe4 Bxc3+ 8. bxc3 Bxe4 9. Nf3 Nf6 10. Bg5 Bxd3 11. Qxd3 0-0 12. 0-0-0 Qe8 13. d5 Na6 14. Rhe1 Nc5 15. Qd4 Qg6 16. h4 h6 17. Ne5 Qh7 18. Bxf6 Rxf6 19. Nxd7 Nxd7 20. dxe6 Nc5 21. Qd8+ Rxd8 22. Rxd8+ Rf8 23. e7 Nd7 24. Rf1 Qe4 25. Rfxf8+ Kh7 26. Rh8+ 1-0

[Event "Mazowiec-chT 1516"]
[Site "Poland"]
[Date "2016.01.10"]
[Round "2.8"]
[White "Kaczmarska, Joanna"]
[Black "Kosny, Marek"]
[Result "1-0"]
[ECO "D36"]
[WhiteElo "1971"]
[BlackElo "1912"]
[PlyCount "119"]
[EventDate "2015.12.13"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "POL"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]
[WhiteTeam "Warszawa Polonia II"]
[BlackTeam "Zielonka Zieloni II"]
[WhiteTeamCountry "POL"]
[BlackTeamCountry "POL"]

1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. Nc3 Nbd7 5. cxd5 exd5 6. Bg5 c6 7. e3 Be7 8. Bd3 0-0 9. Qc2 Re8 10. h3 Nf8 11. 0-0-0 g6 12. g4 Qa5 13. Kb1 b5 14. Ne5 Bb7 15. f4 Rac8 16. Qb3 N6d7 17. Bxe7 Rxe7 18. g5 Nxe5 19. fxe5 Ne6 20. h4 Qd8 21. Rdg1 c5 22. Qd1 cxd4 23. exd4 Nxd4 24. h5 b4 25. hxg6 fxg6 26. Bxg6 hxg6 27. Qxd4 Rc4 28. Qd3 Qb6 29. Nxd5 Bxd5 30. Qxd5+ Qe6 31. Qd8+ Re8 32. Qf6 Qf5+ 33. Ka1 Qxf6 34. exf6 Re2 35. Re1 Rh4 36. Rhf1 Rf4 37. Rc1 Rxf1 38. Rxf1 Rg2 39. Kb1 Rxg5 40. Rc1 a5 41. Rc7 Kf8 42. Rg7 Rg2 43. Ra7 Rg5 44. Kc2 Rf5 45. Kd3 Rf2 46. b3 Rxa2 47. Kc4 g5 48. Kd5 a4 49. bxa4 b3 50. Ke6 Re2+ 51. Kf5 b2 52. Rb7 g4 53. Kg6 g3 54. Rb8+ Re8 55. Rxb2 Ra8 56. a5 g2 57. Rxg2 Rxa5 58. Rb2 Ra8 59. Rh2 Kg8 60. f7+ 1-0

[Event "Mazowiec-chT 1516"]
[Site "Poland"]
[Date "2016.01.10"]
[Round "3.3"]
[White "Kosny, Marek"]
[Black "Ossolinska, Matylda"]
[Result "1-0"]
[ECO "A39"]
[WhiteElo "1912"]
[BlackElo "1587"]
[PlyCount "88"]
[EventDate "2015.12.13"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "POL"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]
[WhiteTeam "Zielonka Zieloni II"]
[BlackTeam "Warszawa Polonia"]
[WhiteTeamCountry "POL"]
[BlackTeamCountry "POL"]

1. Nf3 Nf6 2. c4 c5 3. Nc3 Nc6 4. g3 g6 5. Bg2 Bg7 6. 0-0 0-0 7. d4 cxd4 8. Nxd4 a6 9. Nc2 Qb6 10. Rb1 Ne5 11. b3 d6 12. Be3 Qc7 13. Na4 Bf5 14. Rc1 Rae8 15. Nb4 Qb8 16. f3 Nc6 17. Qd2 Nd7 18. Nd5 Nde5 19. Rfd1 h5 20. Bf2 Kh7 21. e4 Bc8 22. Nab6 Bh6 23. Be3 Bxe3+ 24. Qxe3 f5 25. h3 e6 26. Nxc8 Qxc8 27. Nb6 Qc7 28. f4 Nf7 29. c5 dxc5 30. Qxc5 Rd8 31. exf5 exf5 32. Rd5 Nd6 33. Re5 Nf7 34. Re6 Rfe8 35. Nd5 Rxd5 36. Qxd5 Qb6+ 37. Kh2 Rd8 38. Rexc6 bxc6 39. Qxf7+ Kh8 40. Rxc6 Qd4 41. Rc7 Qg1+ 42. Kxg1 Rd1+ 43. Kh2 Rh1+ 44. Bxh1 h4 1-0

[Event "Warsaw YMCA Winter-A 163rd"]
[Site "Warsaw"]
[Date "2016.01.08"]
[Round "11"]
[White "Kosny, Marek"]
[Black "Praczukowski, Stanislaw"]
[Result "0-1"]
[ECO "A10"]
[WhiteElo "1904"]
[BlackElo "1990"]
[PlyCount "42"]
[EventDate "2016.01.08"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "POL"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. c4 f5 2. Nc3 Nf6 3. d3 e5 4. e4 d6 5. f4 Nc6 6. Nf3 Be7 7. g3 0-0 8. Bg2 Qe8 9. Qe2 fxe4 10. dxe4 Bg4 11. Be3 exf4 12. gxf4 Nh5 13. 0-0-0 Nxf4 14. Bxf4 Rxf4 15. Nd5 Rf7 16. Rhf1 Ne5 17. Kb1 Bd8 18. Ne3 Bh5 19. Rd5 Bxf3 20. Bxf3 Nxf3 21. Rxf3 Qxe4+ 0-1

[Event "Warsaw YMCA Winter-A 163rd"]
[Site "Warsaw"]
[Date "2016.01.08"]
[Round "1"]
[White "Szymczak, Rafal"]
[Black "Kosny, Marek"]
[Result "1-0"]
[ECO "A03"]
[WhiteElo "2029"]
[BlackElo "1904"]
[PlyCount "63"]
[EventDate "2016.01.08"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "POL"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. f4 d5 2. Nf3 c5 3. g3 Nc6 4. Bg2 g6 5. 0-0 Bg7 6. Nc3 Nf6 7. d3 0-0 8. Ne5 Qd6 9. Nxc6 bxc6 10. e4 e5 11. Kh1 Bg4 12. Qe1 Rad8 13. exd5 Nxd5 14. Ne4 Qe7 15. fxe5 Bxe5 16. c3 f6 17. Qf2 f5 18. Bg5 Bf6 19. Bxf6 Nxf6 20. Nxf6+ Rxf6 21. Rae1 Re6 22. Rxe6 Qxe6 23. Qxc5 Rxd3 24. Qxc6 Qe2 25. Qa8+ Kg7 26. Qxa7+ Kh6 27. Qf2 Qe6 28. Re1 Qxa2 29. h3 Bd1 30. Qf4+ Kg7 31. Re7+ Kf8 32. Qe5 1-0

[Event "Warsaw YMCA Autumn-A 161st"]
[Site "Warsaw"]
[Date "2015.12.16"]
[Round "13"]
[White "Kosny, Marek"]
[Black "Pietrzak, Wojciech"]
[Result "1-0"]
[ECO "D40"]
[WhiteElo "1912"]
[BlackElo "1918"]
[PlyCount "85"]
[EventDate "2015.09.25"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "POL"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. Nf3 d5 2. d4 e6 3. c4 c5 4. Nc3 Nc6 5. e3 Nf6 6. Be2 dxc4 7. 0-0 cxd4 8. exd4 Be7 9. Qa4 0-0 10. Qxc4 Nb4 11. Bf4 Nbd5 12. Bg3 Bd7 13. Qb3 Qb6 14. Qxb6 axb6 15. Nxd5 Nxd5 16. Ne5 Rfd8 17. a3 Be8 18. Bf3 f6 19. Nc4 Ra6 20. Ne3 Bc6 21. Rfc1 Ra4 22. Nxd5 Bxd5 23. Bc7 Bxf3 24. Bxd8 Bxd8 25. gxf3 Kf7 26. b4 b5 27. Rc5 Bb6 28. Rxb5 Bxd4 29. Rxb7+ Kg6 30. Rd1 e5 31. Rd3 h5 32. f4 Kf5 33. fxe5 fxe5 34. Rxg7 Ke4 35. Rb3 Ra6 36. Kg2 Rc6 37. b5 Rc2 38. Rf7 Bb6 39. Rf6 Bd8 40. Rd6 Be7 41. Rc6 Bc5 42. Rxc5 Rxc5 43. b6 1-0

[Event "Mazowiec-chT 1516"]
[Site "Poland"]
[Date "2015.12.13"]
[Round "1.18"]
[White "Szymczak, Rafal"]
[Black "Kosny, Marek"]
[Result "1-0"]
[ECO "A02"]
[WhiteElo "2037"]
[BlackElo "1912"]
[PlyCount "155"]
[EventDate "2015.12.13"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "POL"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]
[WhiteTeam "Skoczek Trojanski"]
[BlackTeam "Zielonka Zieloni II"]
[WhiteTeamCountry "POL"]
[BlackTeamCountry "POL"]

1. f4 c5 2. Nf3 Nc6 3. g3 g6 4. Bg2 Bg7 5. 0-0 e5 6. fxe5 Nxe5 7. Nxe5 Bxe5 8. c3 Ne7 9. d4 cxd4 10. cxd4 Qb6 11. e3 Bg7 12. Nc3 0-0 13. Na4 Qb5 14. Bd2 d6 15. b3 Bf5 16. Nc3 Qd7 17. Qf3 b6 18. Rac1 Rac8 19. Kh1 Rc7 20. Qf4 Bd3 21. Rfe1 Rfc8 22. Nd5 Nxd5 23. Bxd5 Rxc1 24. Rxc1 Rxc1+ 25. Bxc1 Qf5 26. Qxf5 Bxf5 27. Kg2 Bb1 28. a4 Kf8 29. Kf3 Ke7 30. Ke2 Bf5 31. Ba3 Be6 32. Bc4 Kd7 33. Kd3 d5 34. Bb5+ Kc7 35. Be7 Bd7 36. Ba6 Bc6 37. Bg5 Bf8 38. Bf4+ Bd6 39. Bxd6+ Kxd6 40. Kc3 h6 41. Kb4 Bd7 42. a5 g5 43. Bb5 Bg4 44. Be8 f6 45. axb6 axb6 46. Kb5 Kc7 47. Ka6 Bc8+ 48. Ka7 Bf5 49. Bf7 Be4 50. Be8 Bf3 51. Bb5 Be4 52. b4 h5 53. h4 Bg6 54. Ka6 Bf5 55. Be8 Bd3+ 56. Ka7 Be2 57. Bf7 Bf3 58. Be8 Be2 59. Bg6 Bf3 60. Bf7 Kc6 61. Be8+ Kc7 62. Ka6 Be2+ 63. b5 Bg4 64. Bf7 Bc8+ 65. Ka7 Bd7 66. Bxh5 Bxb5 67. Bf7 Bd3 68. h5 Kd6 69. Kxb6 Be4 70. Bg8 Ke7 71. Kc5 Bf3 72. h6 Kf8 73. Bxd5 Bg4 74. Kd6 Bc8 75. Be6 Ba6 76. d5 Bd3 77. Kc7 Ke7 78. d6+ 1-0

[Event "Warsaw YMCA Autumn-A 161st"]
[Site "Warsaw"]
[Date "2015.12.11"]
[Round "12"]
[White "Choroszej, Aleksander"]
[Black "Kosny, Marek"]
[Result "1-0"]
[ECO "D37"]
[WhiteElo "1949"]
[BlackElo "1912"]
[PlyCount "79"]
[EventDate "2015.09.25"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "POL"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 Be7 5. Bf4 0-0 6. e3 a6 7. c5 Nbd7 8. Bd3 Re8 9. h3 g6 10. 0-0 Nh5 11. Bh2 Bf6 12. Be2 Ng7 13. b4 b6 14. Qa4 Bb7 15. Rfc1 b5 16. Qd1 e5 17. Nxb5 axb5 18. c6 Bxc6 19. Rxc6 Rb8 20. Rac1 Rb7 21. Qc2 exd4 22. Bxc7 Qa8 23. Nxd4 Bxd4 24. exd4 Ne6 25. Qd2 Qa7 26. Be5 f6 27. Bg4 Nd8 28. Bxd7 Rxd7 29. Rxf6 Nf7 30. Bf4 Rde7 31. Be3 Qd7 32. Rcc6 Ra8 33. Qc2 Nd8 34. Rcd6 Qb7 35. Qc5 Kg7 36. Rb6 Qd7 37. Rfd6 Qf5 38. Rxd8 Rxe3 39. fxe3 Rxd8 40. Qe7+ 1-0

[Event "Warsaw YMCA Autumn-A 161st"]
[Site "Warsaw"]
[Date "2015.11.27"]
[Round "10"]
[White "Borowy, Cezary"]
[Black "Kosny, Marek"]
[Result "1-0"]
[ECO "B03"]
[WhiteElo "1884"]
[BlackElo "1912"]
[PlyCount "61"]
[EventDate "2015.09.25"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "POL"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. c4 Nb6 5. exd6 cxd6 6. Nc3 g6 7. Be3 Bg7 8. Rc1 0-0 9. b3 Nc6 10. d5 Ne5 11. Be2 Ned7 12. Nf3 Nf6 13. 0-0 Bg4 14. Re1 Rc8 15. Qd2 Re8 16. Ng5 Bxe2 17. Rxe2 a6 18. Bd4 Nbd7 19. Rce1 Bf8 20. Qf4 b5 21. Nce4 Bg7 22. Nxd6 Qc7 23. Rxe7 Rxe7 24. Rxe7 bxc4 25. Rxf7 Bf8 26. Rxd7 Qxd7 27. Qxf6 Bg7 28. Qxg7+ Qxg7 29. Bxg7 Rc7 30. bxc4 Rxg7 31. c5 1-0

[Event "Warsaw YMCA Autumn-A 161st"]
[Site "Warsaw"]
[Date "2015.11.19"]
[Round "11"]
[White "Kosny, Marek"]
[Black "Maj, Pawel"]
[Result "1-0"]
[ECO "D76"]
[WhiteElo "1912"]
[BlackElo "2078"]
[PlyCount "27"]
[EventDate "2015.09.25"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "POL"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 g6 3. Nc3 Bg7 4. g3 0-0 5. Bg2 d5 6. cxd5 Nxd5 7. 0-0 Nb6 8. d4 Nc6 9. d5 Bxc3 10. dxc6 Bg7 11. Qc2 bxc6 12. Rd1 Bf5 13. Qb3 Be6 14. Rxd8 1-0

[Event "Warsaw YMCA Autumn-A 161st"]
[Site "Warsaw"]
[Date "2015.11.18"]
[Round "9"]
[White "Kosny, Marek"]
[Black "Liberadzki, Slawomir"]
[Result "0-1"]
[ECO "A37"]
[WhiteElo "1912"]
[BlackElo "2011"]
[PlyCount "58"]
[EventDate "2015.09.25"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "POL"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. Nf3 c5 2. c4 Nc6 3. Nc3 g6 4. g3 Bg7 5. Bg2 e6 6. 0-0 Nge7 7. d3 0-0 8. Bg5 h6 9. Bd2 b6 10. Rb1 Bb7 11. a3 Qc8 12. b4 Nd4 13. e3 Nxf3+ 14. Bxf3 cxb4 15. axb4 d5 16. c5 bxc5 17. bxc5 Ba6 18. Nb5 Qc6 19. Qb3 Qxc5 20. Qa4 Bxb5 21. Rxb5 Qc6 22. Rc1 Qd7 23. Qa6 Rfb8 24. Rbc5 Rb6 25. Qa3 Bb2 26. Rc7 Qxc7 27. Qxb2 Rxb2 28. Rxc7 Rxd2 29. Rxe7 Rxd3 0-1

[Event "Warsaw YMCA Autumn-A 161st"]
[Site "Warsaw"]
[Date "2015.11.13"]
[Round "8"]
[White "Powalka, Michal"]
[Black "Kosny, Marek"]
[Result "0-1"]
[ECO "B05"]
[WhiteElo "1940"]
[BlackElo "1912"]
[PlyCount "54"]
[EventDate "2015.09.25"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "POL"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 Bg4 5. Be2 e6 6. 0-0 Be7 7. exd6 cxd6 8. c4 Nb6 9. h3 Bh5 10. b3 0-0 11. Bb2 Bf6 12. Nc3 d5 13. Ne5 Bxe2 14. Qxe2 dxc4 15. bxc4 Nc6 16. Nxc6 bxc6 17. Rfd1 Rb8 18. Rab1 Bxd4 19. Rxd4 Qxd4 20. Ne4 Qd8 21. Qg4 f6 22. Qxe6+ Kh8 23. Nd6 Qd7 24. Re1 Qxe6 25. Rxe6 Nc8 26. Nf7+ Kg8 27. Ba3 Kxf7 0-1

[Event "Warsaw YMCA Autumn-A 161st"]
[Site "Warsaw"]
[Date "2015.11.04"]
[Round "7"]
[White "Kosny, Marek"]
[Black "Kielar, Maciej"]
[Result "1/2-1/2"]
[ECO "A41"]
[WhiteElo "1912"]
[BlackElo "2115"]
[PlyCount "112"]
[EventDate "2015.09.25"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "POL"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. Nf3 g6 2. c4 Bg7 3. Nc3 e5 4. g3 d6 5. Bg2 Ne7 6. d4 Nd7 7. 0-0 0-0 8. dxe5 dxe5 9. Qc2 h6 10. Rd1 c6 11. e4 Qc7 12. Be3 b6 13. Qd2 Kh7 14. Qd6 Qxd6 15. Rxd6 Re8 16. Rad1 Nf8 17. b3 Bg4 18. h3 Bxf3 19. Bxf3 Ne6 20. Ne2 Rad8 21. c5 Rxd6 22. cxd6 Ng8 23. Bg4 Nf8 24. a4 Nf6 25. a5 c5 26. axb6 axb6 27. Nc3 Rd8 28. b4 h5 29. bxc5 bxc5 30. Be2 Ne6 31. Bc4 Nd4 32. Bxf7 Rxd6 33. Rb1 Bf8 34. f4 Rd7 35. Bc4 Nc2 36. Bc1 exf4 37. gxf4 Rd4 38. Be2 Rb4 39. e5 Ne8 40. Kf2 Nc7 41. Bd3 Nd4 42. Ne4 Nce6 43. Bd2 Rxb1 44. Bxb1 Bh6 45. Ba2 Bxf4 46. Bxf4 Nxf4 47. Nxc5 Nxh3+ 48. Kg3 Ng5 49. Kf4 Kh6 50. e6 Nc6 51. Kg3 Kg7 52. Nd3 Kf6 53. Nf4 Ne7 54. Bb1 Nxe6 55. Bxg6 Nxf4 56. Bxh5 Nxh5+ 1/2-1/2

[Event "Warsaw YMCA Autumn-A 161st"]
[Site "Warsaw"]
[Date "2015.10.30"]
[Round "6"]
[White "Szwaj, Jacek"]
[Black "Kosny, Marek"]
[Result "1-0"]
[ECO "B05"]
[WhiteElo "1948"]
[BlackElo "1912"]
[PlyCount "97"]
[EventDate "2015.09.25"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "POL"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 Bg4 5. Be2 Nc6 6. 0-0 e6 7. c4 Nb6 8. exd6 cxd6 9. d5 exd5 10. cxd5 Bxf3 11. Bxf3 Ne5 12. Be2 Be7 13. a4 0-0 14. Na3 Rc8 15. Qb3 Ned7 16. a5 Nc5 17. Qf3 Nbd7 18. b4 Bf6 19. Ra2 Na4 20. Bd2 Nc3 21. Bxc3 Rxc3 22. Qf4 Be5 23. Qd2 a6 24. Rc1 Rxc1+ 25. Qxc1 Qh4 26. g3 Qxb4 27. Nc4 Bd4 28. Rc2 Re8 29. Kf1 g6 30. Qf4 Be5 31. Nxe5 Qxf4 32. gxf4 dxe5 33. Rc7 Nf6 34. fxe5 Nxd5 35. Rxb7 Rxe5 36. Bxa6 Rf5 37. Bd3 Rf4 38. a6 Ra4 39. Bb5 Ra1+ 40. Kg2 Ra2 41. a7 Kg7 42. Be8 Ra3 43. f3 g5 44. Bxf7 Nf4+ 45. Kg1 Kf6 46. Bc4 h5 47. Rb6+ Ke5 48. Ra6 Rxf3 49. a8Q 1-0

[Event "Warsaw YMCA Autumn-A 161st"]
[Site "Warsaw"]
[Date "2015.10.20"]
[Round "5"]
[White "Praczukowski, Stanislaw"]
[Black "Kosny, Marek"]
[Result "1-0"]
[ECO "B05"]
[WhiteElo "2028"]
[BlackElo "1912"]
[PlyCount "85"]
[EventDate "2015.09.25"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "POL"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 Bg4 5. Be2 Nc6 6. 0-0 g6 7. exd6 cxd6 8. h3 Bf5 9. c4 Nf6 10. d5 Nb8 11. Qb3 Qc8 12. Nc3 Bg7 13. Nd4 Bd7 14. Be3 0-0 15. Rac1 Na6 16. Bf3 Rd8 17. Rfe1 Qc7 18. Ndb5 Qa5 19. a3 Nc7 20. Nxa7 Rxa7 21. Bb6 Qa6 22. Bxc7 Rc8 23. Bb6 Raa8 24. Be2 Rab8 25. c5 Qa8 26. cxd6 exd6 27. Bb5 Re8 28. Rxe8+ Rxe8 29. Bd4 Qd8 30. a4 Ne4 31. Bxg7 Nc5 32. Qc4 Kxg7 33. b4 Bxb5 34. Qxb5 Nb3 35. Rd1 Qc8 36. Qd3 Qf5 37. Qxf5 gxf5 38. Nb5 Rd8 39. Kf1 Kf6 40. Ke2 Ke5 41. Kd3 Rc8 42. Nc3 Rc7 43. Rb1 1-0

[Event "Warsaw YMCA Autumn-A 161st"]
[Site "Warsaw"]
[Date "2015.10.14"]
[Round "4"]
[White "Kosny, Marek"]
[Black "Koziol, Pawel"]
[Result "1-0"]
[ECO "A37"]
[WhiteElo "1912"]
[BlackElo "1927"]
[PlyCount "77"]
[EventDate "2015.09.25"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "POL"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. Nf3 g6 2. c4 Bg7 3. Nc3 c5 4. g3 Nc6 5. Bg2 e5 6. 0-0 Nge7 7. d3 d6 8. Rb1 0-0 9. a3 a5 10. Bg5 h6 11. Bd2 f5 12. e3 g5 13. Nd5 Nxd5 14. cxd5 Ne7 15. b4 axb4 16. axb4 b6 17. Qb3 Ng6 18. bxc5 bxc5 19. e4 f4 20. Ra1 Bg4 21. Ra2 Qd7 22. Rxa8 Rxa8 23. Rb1 Rf8 24. Ne1 fxg3 25. hxg3 Qf7 26. Be3 Bf6 27. Nf3 Be7 28. Nh2 Bc8 29. Bf3 Qg7 30. Bg4 Bxg4 31. Nxg4 Nf4 32. Qd1 h5 33. Nh2 Nh3+ 34. Kg2 Nf4+ 35. Kh1 Nh3 36. Qxh5 Nxf2+ 37. Bxf2 Rxf2 38. Ng4 Rf7 39. Nh6+ 1-0

[Event "Warsaw YMCA Autumn-A 161st"]
[Site "Warsaw"]
[Date "2015.10.07"]
[Round "3"]
[White "Grabowicz, Marcin"]
[Black "Kosny, Marek"]
[Result "1-0"]
[ECO "B29"]
[WhiteElo "1924"]
[BlackElo "1912"]
[PlyCount "39"]
[EventDate "2015.09.25"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "POL"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. e4 Nf6 2. Nc3 d5 3. exd5 Nxd5 4. d4 c5 5. Nf3 cxd4 6. Qxd4 Nxc3 7. Qxc3 Nc6 8. Bb5 Bd7 9. 0-0 Rc8 10. Rd1 f6 11. Be3 Qc7 12. Rd2 e5 13. Rad1 Be6 14. Bxa7 Be7 15. Bc5 Kf7 16. Bc4 Nd4 17. Nxd4 Bxc4 18. Qxc4+ Ke8 19. Qb5+ Kf7 20. Bxe7 1-0

[Event "Warsaw YMCA Autumn-A 161st"]
[Site "Warsaw"]
[Date "2015.10.02"]
[Round "2"]
[White "Kosny, Marek"]
[Black "Kokoszczynski, Jan"]
[Result "1/2-1/2"]
[ECO "E67"]
[WhiteElo "1912"]
[BlackElo "1873"]
[PlyCount "156"]
[EventDate "2015.09.25"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "POL"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 g6 3. Nc3 Bg7 4. g3 0-0 5. Bg2 d6 6. 0-0 e5 7. d4 exd4 8. Nxd4 Nbd7 9. h3 a5 10. Bg5 h6 11. Be3 Re8 12. Qd2 Kh7 13. Nc2 Ne5 14. b3 Qe7 15. Rad1 a4 16. Nxa4 Nxc4 17. Qb4 Nxe3 18. Nxe3 Rd8 19. Nc3 Qe5 20. Rd3 Qh5 21. g4 Qa5 22. Qxa5 Rxa5 23. a4 h5 24. Nb5 hxg4 25. Nc4 Ra6 26. Nxc7 gxh3 27. Bxh3 Rc6 28. Nb5 Bxh3 29. Rxh3+ Nh5 30. Rd1 d5 31. Ne3 d4 32. Nf5 gxf5 33. Rxh5+ Kg6 34. Rh3 Rc2 35. Kf1 Be5 36. Na3 Rc5 37. Nc4 b5 38. axb5 Rxb5 39. Nxe5+ Rxe5 40. Rdd3 Red5 41. Ke1 Kf6 42. Kd2 Ra8 43. Kc1 Ra2 44. Kd1 Ra1+ 45. Kd2 Ra2+ 46. Ke1 Ra1+ 47. Rd1 Ra3 48. Rh6+ Ke5 49. Rb6 Ke4 50. Rb4 Ke5 51. Kd2 Rc5 52. Ke1 Rc3 53. Rb5+ Ke6 54. b4 Rc2 55. f4 Rc4 56. Re5+ Kf6 57. Rb1 d3 58. Re3 Rxf4 59. Rxd3 Ra6 60. b5 Rb6 61. Ra3 Re4 62. Kd2 Ree6 63. e3 Ke5 64. Kc3 f4 65. exf4+ Kxf4 66. Kb4 f5 67. Kc5 Kg5 68. Rd3 f4 69. Rg1+ Kf5 70. Rd5+ Ke4 71. Re1+ Kf3 72. Rxe6 Rxe6 73. b6 Ke4 74. Rd8 Re7 75. Kc6 f3 76. b7 Rxb7 77. Kxb7 f2 78. Rf8 Ke3 1/2-1/2

[Event "Warsaw YMCA Autumn-A 161st"]
[Site "Warsaw"]
[Date "2015.09.29"]
[Round "1"]
[White "Szymczak, Rafal"]
[Black "Kosny, Marek"]
[Result "1-0"]
[ECO "A03"]
[WhiteElo "2062"]
[BlackElo "1912"]
[PlyCount "84"]
[EventDate "2015.09.25"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "POL"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. f4 d5 2. Nf3 c5 3. g3 Nc6 4. Bg2 g6 5. 0-0 Bg7 6. d3 Nf6 7. Nc3 0-0 8. Ne5 Nxe5 9. fxe5 Ng4 10. Nxd5 Nxe5 11. Bg5 f6 12. Bd2 Be6 13. c4 Qd7 14. Bc3 Ng4 15. Qc1 Rab8 16. Bd2 Bf7 17. h3 Ne5 18. Bf4 b5 19. b3 Rbd8 20. Qe3 Qd6 21. Kh2 b4 22. a3 e6 23. Bxe5 fxe5 24. Nf6+ Bxf6 25. Rxf6 a5 26. axb4 axb4 27. Ra7 Rc8 28. Be4 Rc7 29. Ra2 Qe7 30. Rf1 Ra7 31. Rfa1 Rxa2 32. Rxa2 Rc8 33. Ra6 Rc7 34. Bf3 Qf6 35. Qh6 Rc8 36. Kg2 Rf8 37. Qe3 Rc8 38. Qe4 Be8 39. Qb7 Rd8 40. Qb6 Bf7 41. Qxc5 g5 42. Ra5 Bg6 1-0

[Event "Warsaw YMCA Winter 150th"]
[Site "Warsaw"]
[Date "2015.03.05"]
[Round "9"]
[White "Sujkowski, Pawel"]
[Black "Kosny, Marek"]
[Result "1/2-1/2"]
[ECO "A39"]
[WhiteElo "1905"]
[BlackElo "1918"]
[PlyCount "113"]
[EventDate "2015.01.08"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "POL"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. c4 c5 2. g3 Nc6 3. Bg2 g6 4. Nc3 Bg7 5. Nf3 Nf6 6. d4 cxd4 7. Nxd4 0-0 8. 0-0 Qa5 9. Nb3 Qh5 10. c5 d6 11. cxd6 Rd8 12. e4 Rxd6 13. Qxh5 Nxh5 14. Be3 Be6 15. Rfd1 Bxb3 16. Rxd6 exd6 17. axb3 a6 18. Rd1 Bf8 19. Nd5 Kg7 20. Bd2 f5 21. Bc3+ Kf7 22. exf5 gxf5 23. f4 Ng7 24. Re1 Re8 25. Rxe8 Nxe8 26. Kf2 Bg7 27. Ke3 Nf6 28. Nxf6 Bxf6 29. Bd5+ Ke7 30. Kd3 a5 31. Kc4 h5 32. h4 Nd8 33. Bxa5 Ne6 34. Bb6 Bxb2 35. Bxb7 Bc1 36. Bf3 Bd2 37. Bf2 Nc5 38. Kd4 Nxb3+ 39. Kd3 Ba5 40. Bxh5 Nc5+ 41. Ke2 Ne4 42. Bf3 Nxf2 43. Kxf2 Kf6 44. g4 fxg4 45. Bxg4 Bd2 46. Kf3 d5 47. Bc8 Be1 48. h5 Bd2 49. Kg4 d4 50. Ba6 Bb4 51. Bd3 Bf8 52. Kf3 Kg7 53. Bg6 Kh6 54. Ke4 Bg7 55. Be8 Bf6 56. Bg6 Bg7 57. Be8 1/2-1/2

[Event "Mazowiec-chT 1415"]
[Site "Warsaw"]
[Date "2015.03.01"]
[Round "7.1"]
[White "Kosny, Marek"]
[Black "Wojtaszewski, Piotr"]
[Result "0-1"]
[ECO "A39"]
[WhiteElo "1918"]
[BlackElo "2006"]
[PlyCount "104"]
[EventDate "2015.01.11"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "POL"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. Nf3 c5 2. c4 g6 3. Nc3 Bg7 4. g3 Nc6 5. Bg2 Nf6 6. 0-0 0-0 7. d4 cxd4 8. Nxd4 Nxd4 9. Qxd4 d6 10. Qh4 Be6 11. Bg5 Rc8 12. b3 Qa5 13. Rac1 Rc5 14. Bd2 Rh5 15. Qf4 Rxh2 16. Kxh2 Ng4+ 17. Kg1 Qh5 18. Qxg4 Bxg4 19. Bxb7 Bxc3 20. Rxc3 Bxe2 21. Re1 Bg4 22. Rxe7 Be6 23. Bf3 Qf5 24. Rxa7 Qc5 25. Be3 Qf5 26. Bf4 Rd8 27. Bg2 g5 28. Be3 h5 29. Rb7 f6 30. a4 h4 31. Rb5 Qb1+ 32. Rc1 Qd3 33. Re1 Re8 34. a5 Bf7 35. gxh4 gxh4 36. Ra1 Qc2 37. Rf1 Kg7 38. Kh2 h3 39. Bxh3 Rxe3 40. Bg2 Re8 41. Rb7 Qh7+ 42. Kg1 Rg8 43. a6 Kh8 44. f4 Qc2 45. Rf2 Qb1+ 46. Rf1 Qe4 47. Rf2 Bh5 48. Rd7 Qe1+ 49. Rf1 Qe3+ 50. Kh2 Rb8 51. c5 Rg8 52. Kh1 Qg3 0-1

[Event "Warsaw YMCA Winter 150th"]
[Site "Warsaw"]
[Date "2015.02.26"]
[Round "8"]
[White "Kosny, Marek"]
[Black "Golecki, Jan"]
[Result "1-0"]
[ECO "A17"]
[WhiteElo "1918"]
[BlackElo "1800"]
[PlyCount "77"]
[EventDate "2015.01.08"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "POL"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 e6 3. Nc3 b6 4. g3 Bb7 5. Bg2 Bb4 6. 0-0 0-0 7. d3 d6 8. Bg5 Bxc3 9. bxc3 Nbd7 10. e4 h6 11. Bd2 Nc5 12. Ne1 d5 13. cxd5 exd5 14. e5 Nfd7 15. f4 Qe7 16. f5 Ba6 17. f6 Qxe5 18. d4 Qd6 19. fxg7 Rfe8 20. Rf5 Ne4 21. Qh5 Qg6 22. Qxh6 Qxh6 23. Bxh6 c6 24. Nc2 Nxc3 25. Nb4 Ne2+ 26. Kh1 Bb7 27. Raf1 f6 28. Nc2 a5 29. Bf3 Ba6 30. Rf2 Bd3 31. Rh5 Bxc2 32. Bxe2 f5 33. g4 Nf6 34. Rh4 Ne4 35. Rg2 Nc3 36. Bf3 Re1+ 37. Rg1 Re3 38. Bxe3 f4 39. Bxf4 1-0

[Event "Warsaw YMCA Winter 150th"]
[Site "Warsaw"]
[Date "2015.02.20"]
[Round "7"]
[White "Grabowicz, Marcin"]
[Black "Kosny, Marek"]
[Result "1/2-1/2"]
[ECO "B02"]
[WhiteElo "1899"]
[BlackElo "1918"]
[PlyCount "41"]
[EventDate "2015.01.08"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "POL"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. Nc3 Nxc3 4. dxc3 d6 5. Bf4 g6 6. Qd2 Nc6 7. 0-0-0 Bg7 8. exd6 cxd6 9. h4 Qa5 10. Bc4 Bd7 11. Nf3 Qc5 12. Qe2 0-0 13. h5 b5 14. Bb3 b4 15. hxg6 hxg6 16. Be3 Qa5 17. Rd5 Qc7 18. cxb4 Be6 19. Qd2 Bxd5 20. Bxd5 Rac8 21. Bb3 1/2-1/2

[Event "Mazowiec-chT 1415"]
[Site "Warsaw"]
[Date "2015.02.15"]
[Round "5.10"]
[White "Kedzierski, Slawomir"]
[Black "Kosny, Marek"]
[Result "1-0"]
[ECO "D63"]
[WhiteElo "2023"]
[BlackElo "1918"]
[PlyCount "97"]
[EventDate "2015.01.11"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "POL"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Bg5 Be7 5. e3 Nbd7 6. Rc1 0-0 7. Nf3 a6 8. c5 Re8 9. Be2 Nf8 10. 0-0 Ng6 11. b4 h6 12. Bf4 Nh5 13. Be5 f6 14. Ne1 Nxe5 15. dxe5 g6 16. Bxh5 gxh5 17. Qxh5 Kg7 18. Nf3 Rg8 19. Ne2 Bd7 20. Nf4 Qe8 21. Qh3 Kh7 22. Rfd1 c6 23. Kh1 Qf7 24. g3 Rae8 25. Qf1 Bd8 26. Qd3+ Kh8 27. a4 Bc7 28. Qc3 Bc8 29. Kg2 Ref8 30. Rd2 Rg4 31. Kf1 Bd8 32. Ke2 Kg8 33. Rh1 Rg7 34. h3 fxe5 35. Nxe5 Bf6 36. Rg1 Rg5 37. Nxf7 Bxc3 38. Nxg5 Bxd2 39. Ngxe6 Rf6 40. Kxd2 Bxe6 41. g4 Kf7 42. h4 d4 43. g5 hxg5 44. hxg5 Rf5 45. g6+ Kg8 46. Nxe6 Rxf2+ 47. Kd3 dxe3 48. Kxe3 Rh2 49. Rf1 1-0

[Event "Mazowiec-chT 1415"]
[Site "Warsaw"]
[Date "2015.02.15"]
[Round "4.11"]
[White "Kosny, Marek"]
[Black "Harazinski, Adam"]
[Result "1/2-1/2"]
[ECO "A36"]
[WhiteElo "1918"]
[BlackElo "1916"]
[PlyCount "51"]
[EventDate "2015.01.11"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "POL"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. Nf3 c5 2. c4 Nc6 3. Nc3 g6 4. g3 Bg7 5. Bg2 e6 6. e4 Nge7 7. 0-0 0-0 8. d3 d5 9. cxd5 exd5 10. Bf4 Bg4 11. Qd2 Bxf3 12. Bxf3 Nd4 13. Bg2 dxe4 14. dxe4 Qa5 15. Rad1 Nec6 16. Rfe1 Ne5 17. Bxe5 Bxe5 18. f4 Bg7 19. e5 Rfd8 20. Qf2 Rab8 21. Ne4 Bf8 22. b3 Be7 23. g4 Nc6 24. Nf6+ Bxf6 25. exf6 Qc3 26. Bxc6 1/2-1/2

[Event "Warsaw YMCA Winter 150th"]
[Site "Warsaw"]
[Date "2015.02.13"]
[Round "6"]
[White "Kosny, Marek"]
[Black "Pajak, Jakub Lech"]
[Result "1-0"]
[ECO "A34"]
[WhiteElo "1918"]
[BlackElo "1788"]
[PlyCount "27"]
[EventDate "2015.01.08"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "POL"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 e6 3. Nc3 c5 4. g3 Nc6 5. Bg2 b6 6. d4 d5 7. cxd5 Nxd5 8. 0-0 cxd4 9. Nxd4 Nxd4 10. Nxd5 Bb7 11. Qxd4 Bxd5 12. Rd1 Rc8 13. Qa4+ Ke7 14. e4 1-0

[Event "Mazowiec-chT 1415"]
[Site "Warsaw"]
[Date "2015.02.08"]
[Round "2.11"]
[White "Kosny, Marek"]
[Black "Maj, Pawel1111"]
[Result "1-0"]
[ECO "A33"]
[WhiteElo "1918"]
[BlackElo "2023"]
[PlyCount "59"]
[EventDate "2015.01.11"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "POL"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 e6 3. Nc3 c5 4. g3 Nc6 5. Bg2 Be7 6. 0-0 0-0 7. d4 cxd4 8. Nxd4 a6 9. Nc2 Qc7 10. b3 Rb8 11. Bb2 b5 12. cxb5 axb5 13. Rc1 b4 14. Na4 d5 15. Nd4 Bd7 16. Nc5 Bxc5 17. Rxc5 Qb7 18. Nxc6 Bxc6 19. Bxf6 gxf6 20. Qd4 f5 21. Rfc1 Rfc8 22. Qf4 Ra8 23. Qd6 Ra6 24. e4 dxe4 25. Bxe4 Bxe4 26. Rxc8+ Kg7 27. Qf8+ Kg6 28. R8c7 Qd5 29. Qxf7+ Kg5 30. Qg8+ 1-0

[Event "Mazowiec-chT 1415"]
[Site "Warsaw"]
[Date "2015.02.08"]
[Round "3.6"]
[White "Myc, Marcin"]
[Black "Kosny, Marek"]
[Result "1-0"]
[ECO "D63"]
[WhiteElo "2286"]
[BlackElo "1918"]
[PlyCount "93"]
[EventDate "2015.01.11"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "POL"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Bg5 Be7 5. Nf3 Nbd7 6. e3 0-0 7. Rc1 a6 8. cxd5 exd5 9. Bd3 Re8 10. 0-0 Nf8 11. Ne5 Ne6 12. Bxf6 Bxf6 13. Bxh7+ Kf8 14. f4 c6 15. Qh5 g6 16. Bxg6 Ng7 17. Nxf7 Nxh5 18. Nxd8 Rxe3 19. Bxh5 Bf5 20. Nf7 Bxd4 21. Kh1 Bd3 22. Rfe1 Rae8 23. Ne5 Re7 24. Nxd3 Rxd3 25. Rxe7 Kxe7 26. Rd1 Re3 27. Rc1 Kd6 28. h3 Rd3 29. Rd1 Rxd1+ 30. Nxd1 c5 31. Be2 b5 32. g4 c4 33. Kg2 b4 34. b3 Kc5 35. Kf3 a5 36. Ne3 a4 37. Nxc4 axb3 38. axb3 dxc4 39. Bxc4 Kd6 40. h4 Ke7 41. g5 Kf8 42. h5 Kg7 43. f5 Bb2 44. Kg4 Bc3 45. h6+ Kh7 46. f6 Kh8 47. f7 1-0

