[Event "257th YMCA Spring A 2022"] [Site "Warsaw POL"] [Date "2022.06.10"] [Round "10"] [White "Niedbal, Piotr"] [Black "Polak, Michal"] [Result "1/2-1/2"] [WhiteElo "1868"] [BlackElo "1945"] [ECO "B33"] [Opening "Sicilian"] [Variation "Pelikan (Lasker/Sveshnikov) variation"] [EventDate "2022.04.08"] [WhiteFideId "1158244"] [BlackFideId "1171763"] [EventType "tourn"] 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 1/2-1/2

[Event "257th YMCA Spring A 2022"] [Site "Warsaw POL"] [Date "2022.05.20"] [Round "7"] [White "Kalejta, A"] [Black "Niedbal, Piotr"] [Result "0-1"] [WhiteElo "1756"] [BlackElo "1868"] [ECO "B48"] [Opening "Sicilian"] [Variation "Taimanov variation"] [EventDate "2022.04.08"] [WhiteFideId "1170171"] [BlackFideId "1158244"] [EventType "tourn"] 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. Be3 a6 7. Bd3 Nf6 8. O-O Bb4 9. Kh1 Nxd4 10. Bxd4 e5 11. Be3 d6 12. Bd2 Bc5 13. h3 Be6 14. f4 h5 15. f5 Bd7 16. Qe2 O-O-O 17. a4 Bc6 18. Be3 Qb6 19. a5 Qc7 20. b4 Bd4 21. Ra3 d5 22. b5 dxe4 23. bxc6 exd3 24. cxb7+ Kb8 25. Qxd3 Qc6 26. Bxd4 Rxd4 27. Qe3 Re8 28. Rb1 Nd7 29. Na2 Qxc2 30. Nc3 Qxf5 31. Qe2 Nc5 32. Raa1 Red8 33. Rd1 Rxd1+ 34. Rxd1 Rxd1+ 35. Qxd1 Qd3 36. Qa1 f6 37. Na4 Nxa4 38. Qxa4 Qb5 39. Qc2 Kxb7 40. Qg6 Qf1+ 41. Kh2 Qf4+ 42. Kh1 Qc1+ 43. Kh2 Qc7 44. Qxh5 Qxa5 45. Qf7+ Qc7 46. Qd5+ Kb6 47. h4 a5 48. Qb3+ Kc6 49. Qa4+ Kd6 50. g3 Ke7 51. Qe4 Qd7 52. Qe1 a4 53. Qb4+ Ke8 54. Qc4 Kf8 55. Qb4+ Kg8 56. Qb8+ Kf7 57. Qb4 Qa7 58. Qc4+ Ke7 59. Qb4+ Ke6 60. Qc4+ Kd6 61. Qb4+ Kd5 62. Qb5+ Ke4 63. Qe2+ Kd5 64. Qb5+ Kd6 65. Qb4+ Ke6 66. Qc4+ Ke7 67. Qb4+ Kf7 68. Qc4+ Kf8 69. Qc8+ Ke7 70. Qc4 a3 71. Qb4+ Ke6 72. Qc4+ Kd6 73. Qb4+ Qc5 74. Qb8+ Ke6 75. Qb3+ Ke7 76. Qb7+ Kf8 77. Qa8+ Kf7 78. Qb7+ Kg8 79. Qa8+ Qf8 80. Qd5+ Kh8 81. g4 Qc8 82. Qb3 Qxg4 0-1

[Event "257th YMCA Spring A 2022"] [Site "Warsaw POL"] [Date "2022.05.12"] [Round "9"] [White "Kaminski, Maciej"] [Black "Niedbal, Piotr"] [Result "0-1"] [WhiteElo "1941"] [BlackElo "1868"] [ECO "B44"] [Opening "Sicilian, Szen ('anti-Taimanov') variation"] [EventDate "2022.04.08"] [WhiteFideId "1175521"] [BlackFideId "1158244"] [EventType "tourn"] 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nb5 d6 6. c4 Nf6 7. N1c3 a6 8. Na3 Be7 9. Be2 O-O 10. O-O Qc7 11. Be3 Ne5 12. f4 Ng6 13. Rc1 Bd7 14. g3 Rac8 15. Bf3 Rfd8 16. Qe2 Be8 17. Qf2 Nd7 18. Rfd1 Qb8 19. Bg2 Nc5 20. e5 Nd7 21. exd6 Bxd6 22. Ba7 Qc7 23. Nab5 axb5 24. Nxb5 Bc5 25. Nxc7 Bxf2+ 26. Kxf2 Rxc7 27. Bb6 Rdc8 28. Bxc7 Rxc7 29. c5 Nxc5 30. Ke3 Ne7 31. g4 b6 32. Rd6 Na6 33. Rd8 Kf8 34. Rcd1 Nb4 35. Be4 Ned5+ 36. Kf3 Ke7 37. Rb8 Nc6 38. Ra8 Nf6 39. Ra3 Nxe4 40. Kxe4 Nb4 41. f5 Nd5 42. fxe6 fxe6 43. Rd2 Rc1 44. h4 Rf1 45. Ra7+ Bd7 46. Rg2 Kd6 47. Rg3 Bb5 48. Rf3 Re1+ 49. Kd4 e5# 0-1

[Event "257th YMCA Spring A 2022"] [Site "Warsaw POL"] [Date "2022.05.10"] [Round "11"] [White "Dunalewicz, P"] [Black "Niedbal, Piotr"] [Result "1/2-1/2"] [WhiteElo "1879"] [BlackElo "1868"] [ECO "B40"] [Opening "Sicilian defence"] [EventDate "2022.04.08"] [WhiteFideId "1120921"] [BlackFideId "1158244"] [EventType "tourn"] 1. e4 c5 2. Nf3 e6 3. b3 d5 4. exd5 Qxd5 5. Bb2 Nf6 6. Bc4 Qe4+ 7. Be2 a6 8. O-O Nc6 9. Re1 Qf4 10. d4 cxd4 11. g3 Qc7 12. Nxd4 Bc5 13. Nxc6 Qxc6 14. Bf3 Qb6 15. Qe2 Bd7 16. Nd2 Bb5 17. c4 Bc6 18. Bxc6+ Qxc6 19. Ne4 Nxe4 20. Qxe4 Qxe4 21. Rxe4 O-O 22. Ree1 Rfd8 23. Red1 Kf8 24. Kf1 f6 25. Ke2 Ke7 26. f3 e5 27. a3 Ke6 28. b4 Bb6 29. c5 Bc7 30. a4 Rxd1 31. Rxd1 Rd8 32. Rxd8 Bxd8 33. Kd3 Kd5 34. g4 g6 35. Bc3 f5 36. h3 e4+ 37. fxe4+ fxe4+ 38. Ke2 Kc4 39. Be1 Bg5 40. h4 Bf4 41. h5 gxh5 42. gxh5 Kb3 43. b5 Kxa4 44. bxa6 bxa6 45. c6 Kb5 46. Bd2 Bc7 47. Ke3 Kxc6 48. Kxe4 Kd7 49. Kf5 Ke7 50. Bb4+ Kf7 51. Bc3 Bd6 52. Ba5 Bf8 53. Bd2 Bg7 54. Be1 Bd4 55. Ba5 Bc5 56. Bd2 Bb6 57. Bc3 a5 58. Bxa5 Bxa5 59. h6 Ke7 60. Kg4 Ke6 61. Kh3 Kf5 62. Kg2 Kf4 63. Kh1 Kf3 64. Kg1 Bb6+ 65. Kh1 Kf2 66. Kh2 Bc7+ 67. Kh1 Bg3 1/2-1/2

[Event "257th YMCA Spring A 2022"] [Site "Warsaw POL"] [Date "2022.05.06"] [Round "5"] [White "Niedbal, Piotr"] [Black "Pajak, Jakub"] [Result "1/2-1/2"] [WhiteElo "1868"] [BlackElo "1897"] [ECO "B38"] [Opening "Sicilian"] [Variation "accelerated fianchetto, Maroczy bind, 6.Be3"] [EventDate "2022.04.08"] [WhiteFideId "1158244"] [BlackFideId "1184040"] [EventType "tourn"] 1. e4 g6 2. d4 Bg7 3. Nf3 c5 4. c4 cxd4 5. Nxd4 Nc6 6. Be3 Nf6 7. Nc3 O-O 8. Be2 d6 9. O-O Bd7 10. Qd2 Nxd4 11. Bxd4 Bc6 12. f3 a5 13. b3 Nd7 14. Be3 Nc5 15. Rac1 e6 16. Kh1 Be5 17. Bg5 f6 18. Be3 f5 19. Bg5 Qb6 20. Be7 Rf7 21. Bxd6 Rd7 22. Bxc5 Rxd2 23. Bxb6 Bxc3 24. Rxc3 Rxe2 25. exf5 gxf5 26. a3 Kf7 27. Kg1 Rg8 28. Rf2 Re1+ 29. Rf1 Re2 30. Rf2 Re1+ 31. Rf1 Re2 1/2-1/2

[Event "257th YMCA Spring A 2022"] [Site "Warsaw POL"] [Date "2022.04.26"] [Round "4"] [White "Choroszej, A"] [Black "Niedbal, Piotr"] [Result "1-0"] [WhiteElo "2029"] [BlackElo "1868"] [ECO "A69"] [Opening "Benoni"] [Variation "four pawns attack, main line"] [EventDate "2022.04.08"] [WhiteFideId "1140825"] [BlackFideId "1158244"] [EventType "tourn"] 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f4 O-O 6. Nf3 c5 7. d5 e6 8. Be2 exd5 9. cxd5 Re8 10. e5 dxe5 11. fxe5 Ng4 12. e6 fxe6 13. d6 Ne5 14. Ne4 Nxf3+ 15. Bxf3 Bd4 16. Bg5 Qa5+ 17. Bd2 Qd8 18. Bc3 Nc6 19. Bxd4 cxd4 20. O-O Bd7 21. b4 e5 22. Bg4 Kh8 23. Rf7 Be6 24. Bxe6 Rxe6 25. Qg4 Rxd6 26. Raf1 h5 27. Qg3 Re6 28. Nf6 Re7 29. Qxg6 Rxf7 30. Qh6+ Rh7 31. Qxh7# 1-0

[Event "257th YMCA Spring A 2022"] [Site "Warsaw POL"] [Date "2022.04.19"] [Round "3"] [White "Niedbal, Piotr"] [Black "Moskwinski, M"] [Result "1/2-1/2"] [WhiteElo "1868"] [BlackElo "1856"] [ECO "B10"] [Opening "Caro-Kann"] [Variation "anti-anti-Caro-Kann defence"] [EventDate "2022.04.08"] [WhiteFideId "1158244"] [BlackFideId "1129503"] [EventType "tourn"] 1. e4 c6 2. c4 d5 3. exd5 cxd5 4. cxd5 Nf6 5. Bb5+ Nbd7 6. Nf3 Nxd5 7. O-O e6 8. Nc3 Nc7 9. Ba4 Be7 10. d4 O-O 11. Bc2 Nf6 12. Ng5 Bd7 13. Qd3 g6 14. Rd1 Bc6 15. Qh3 h5 16. Qd3 Nfd5 17. Nxd5 Qxd5 18. Nf3 Rad8 1/2-1/2

[Event "257th YMCA Spring A 2022"] [Site "Warsaw POL"] [Date "2022.04.15"] [Round "2"] [White "Sloniewski, Michal"] [Black "Niedbal, Piotr"] [Result "1/2-1/2"] [WhiteElo "1825"] [BlackElo "1868"] [ECO "A48"] [Opening "King's Indian"] [Variation "London system"] [EventDate "2022.04.08"] [WhiteFideId "21815143"] [BlackFideId "1158244"] [EventType "tourn"] 1. d4 Nf6 2. Nf3 g6 3. Bf4 b6 4. e3 Bb7 5. Be2 Bg7 6. h3 O-O 7. O-O d5 8. Nbd2 c5 9. c3 Nc6 10. Ne5 Nd7 11. Nxd7 Qxd7 12. dxc5 e5 13. Bg5 bxc5 14. Ne4 Qf5 15. g4 Qc8 16. Nxc5 d4 17. exd4 exd4 18. Bf3 Ba6 19. Nxa6 Qxa6 20. Bxc6 Qxc6 21. cxd4 Qb5 22. Qd2 Bxd4 23. Qxd4 Qxg5 24. Rfe1 Rfd8 25. Qe3 Qb5 26. Qe2 Qb4 27. Rad1 Re8 28. Qxe8+ Rxe8 29. Rxe8+ Kg7 30. Re2 Qc4 31. Re7 h5 32. gxh5 gxh5 33. Rxa7 Qc2 34. Rdd7 Qc1+ 35. Kg2 Qg5+ 36. Kf3 Qf5+ 37. Ke2 Qc2+ 38. Ke3 Qc5+ 39. Kd3 Qb5+ 40. Kc3 Qc5+ 41. Kb3 Qb5+ 42. Ka3 Qc5+ 43. b4 Qc3+ 44. Ka4 Qc2+ 45. Kb5 Qe2+ 46. Kc5 Qxf2+ 47. Rd4 Qf5+ 48. Rd5 Qf2+ 49. Rd4 Qf5+ 50. Rd5 Qf2+ 1/2-1/2

[Event "257th YMCA Spring A 2022"] [Site "Warsaw POL"] [Date "2022.04.14"] [Round "6"] [White "Niedbal, Piotr"] [Black "Lewandrowski, T"] [Result "1/2-1/2"] [WhiteElo "1868"] [BlackElo "1908"] [ECO "B32"] [Opening "Sicilian"] [Variation "Labourdonnais-Loewenthal (Kalashnikov) variation"] [EventDate "2022.04.08"] [WhiteFideId "1158244"] [BlackFideId "1154753"] [EventType "tourn"] 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e5 5. Nb5 d6 6. c4 Be6 7. Bd3 g6 8. O-O a6 9. N5c3 Bg7 10. Be3 Nf6 11. Nd5 Bxd5 12. cxd5 Nd4 13. Nc3 O-O 14. f4 Nh5 15. f5 Nf4 16. Bxd4 exd4 17. Ne2 Nxe2+ 18. Qxe2 Qg5 19. Rf3 Rac8 20. Raf1 Rc1 21. fxg6 hxg6 22. g3 Bh6 23. Rxc1 Qxc1+ 24. Rf1 Qc7 25. h4 Qe7 26. Kg2 Be3 27. Qg4 Kg7 28. Rf3 1/2-1/2

[Event "257th YMCA Spring A 2022"] [Site "Warsaw POL"] [Date "2022.04.08"] [Round "1"] [White "Niedbal, Piotr"] [Black "Pichurko, J"] [Result "1/2-1/2"] [WhiteElo "1868"] [BlackElo "1767"] [ECO "B10"] [Opening "Caro-Kann"] [Variation "anti-anti-Caro-Kann defence"] [EventDate "2022.04.08"] [WhiteFideId "1158244"] [BlackFideId "1127560"] [EventType "tourn"] 1. e4 c6 2. c4 d5 3. exd5 cxd5 4. cxd5 Qxd5 5. Nc3 Qd8 6. Nf3 Nf6 7. d4 g6 8. Bc4 Bg7 9. O-O O-O 10. Re1 Bg4 11. Be3 Nc6 12. Be2 Nd5 13. Bg5 h6 1/2-1/2

[Event "252nd YMCA Autumn A2 2021"] [Site "Warsaw POL"] [Date "2021.12.10"] [Round "12"] [White "Niedbal, Piotr"] [Black "Lewandrowski, T"] [Result "0-1"] [WhiteElo "1837"] [BlackElo "1814"] [ECO "C03"] [Opening "French"] [Variation "Tarrasch"] [EventDate "2021.10.01"] [WhiteFideId "1158244"] [BlackFideId "1154753"] [EventType "tourn"] 1. e4 e6 2. d4 d5 3. Nd2 dxe4 4. Nxe4 Bd7 5. Bd3 Bc6 6. Nf3 Nd7 7. O-O Ngf6 8. Ng3 Be7 9. Re1 O-O 10. c3 Bd5 11. c4 Bxf3 12. Qxf3 c6 13. Bd2 Qb6 14. Bc3 Bb4 15. Ne4 Bxc3 16. bxc3 Nxe4 17. Rxe4 Qa5 18. Rh4 f5 19. Bc2 Rf6 20. Bb3 Raf8 21. Re1 Rg6 22. c5 Rff6 23. Rh5 Kh8 24. Rh3 Qc7 25. Rg3 Nf8 26. Rxg6 Rxg6 27. Re5 Qf7 28. h3 Qf6 29. Qf4 h6 30. Re3 Qg5 31. Qxg5 hxg5 32. Kf1 Kh7 33. g4 Rh6 34. gxf5 exf5 35. Re8 Rf6 36. Rb8 Ng6 37. Rxb7 Nf4 38. Rxa7 Rh6 39. Bc2 Kg6 40. Rc7 Rxh3 41. Rxc6+ Kh5 42. Ke1 Rxc3 43. Bxf5 g6 44. Be4 Ra3 45. d5 Rxa2 46. d6 Re2+ 47. Kd1 Rxe4 48. Rc7 Ne6 49. Rc8 Rc4 50. Ke2 Rxc5 51. d7 Rd5 52. Re8 Nd4+ 53. Kf1 Rxd7 54. Kg2 g4 55. Re5+ Nf5 56. Ra5 Rd2 57. Kg1 Kh4 58. Ra6 Kh3 59. Kf1 Rd6 60. Ra8 g3 61. fxg3 Nxg3+ 62. Kf2 Rf6+ 63. Kg1 Rf1# 0-1

[Event "252nd YMCA Autumn A2 2021"] [Site "Warsaw POL"] [Date "2021.11.26"] [Round "10"] [White "Niedbal, Piotr"] [Black "Kalejta, A"] [Result "1/2-1/2"] [WhiteElo "1837"] [BlackElo "1784"] [ECO "C77"] [Opening "Ruy Lopez"] [Variation "Anderssen variation"] [EventDate "2021.10.01"] [WhiteFideId "1158244"] [BlackFideId "1170171"] [EventType "tourn"] 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. d3 d6 6. c3 g6 7. O-O Bg7 8. Re1 b5 9. Bb3 Na5 10. Bc2 c5 11. a4 b4 12. Nbd2 1/2-1/2

[Event "252nd YMCA Autumn A2 2021"] [Site "Warsaw POL"] [Date "2021.11.19"] [Round "9"] [White "Adamski, Adam"] [Black "Niedbal, Piotr"] [Result "1/2-1/2"] [WhiteElo "1704"] [BlackElo "1837"] [ECO "B47"] [Opening "Sicilian"] [Variation "Taimanov (Bastrikov) variation"] [EventDate "2021.10.01"] [WhiteFideId "1186370"] [BlackFideId "1158244"] [EventType "tourn"] 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. Be2 a6 7. O-O Nf6 8. Be3 Bb4 9. Nxc6 bxc6 10. Na4 Be7 11. Nb6 Rb8 12. Nxc8 Qxc8 13. Bd4 c5 14. Be5 Rb6 15. Qd3 d6 16. Bc3 O-O 17. b3 d5 18. exd5 exd5 19. Rad1 d4 20. Ba5 Re6 21. Bf3 Bd8 22. Bd2 Rfe8 23. Rfe1 Rxe1+ 24. Rxe1 Rxe1+ 25. Bxe1 Qe6 26. Qe2 Qxe2 27. Bxe2 a5 28. Bf3 Kf8 29. Bd2 Ke7 30. Kf1 Ke6 31. Ke2 Nd5 32. Bxd5+ Kxd5 33. Kd3 Bc7 34. h3 g6 35. c3 dxc3 36. Bxc3 Bb6 37. Bd2 Bc7 38. Bc3 1/2-1/2

[Event "252nd YMCA Autumn A2 2021"] [Site "Warsaw POL"] [Date "2021.11.12"] [Round "8"] [White "Niedbal, Piotr"] [Black "Lewandrowski, T"] [Result "1/2-1/2"] [WhiteElo "1837"] [BlackElo "1814"] [ECO "C03"] [Opening "French"] [Variation "Tarrasch"] [EventDate "2021.10.01"] [WhiteFideId "1158244"] [BlackFideId "1154753"] [EventType "tourn"] 1. e4 e6 2. d4 d5 3. Nd2 dxe4 4. Nxe4 Bd7 5. Bd3 Bc6 6. Nf3 Nd7 7. Qe2 Ngf6 8. O-O Be7 9. c3 O-O 10. Bd2 Nxe4 11. Bxe4 Bxe4 12. Qxe4 c6 13. Rfd1 Qb6 14. Qc2 Bd6 15. h3 h6 16. Be3 Qc7 17. Rac1 Rae8 18. Qd3 Qa5 19. c4 Qh5 20. Qb3 b5 21. cxb5 cxb5 22. d5 Ne5 23. Nxe5 Qxe5 24. g3 exd5 25. Qxd5 Rd8 26. Qxe5 Bxe5 27. b3 a6 28. Rxd8 Rxd8 29. Rc6 Rd6 30. Rc8+ Kh7 31. Kg2 f5 32. h4 h5 33. a4 bxa4 34. bxa4 Bf6 35. Bc5 Re6 36. a5 f4 37. Ra8 fxg3 38. fxg3 Be5 39. Bb6 1/2-1/2

[Event "252nd YMCA Autumn A2 2021"] [Site "Warsaw POL"] [Date "2021.11.05"] [Round "7"] [White "Kuc, M"] [Black "Niedbal, Piotr"] [Result "1/2-1/2"] [WhiteElo "1910"] [BlackElo "1837"] [ECO "B23"] [Opening "Sicilian"] [Variation "closed"] [EventDate "2021.10.01"] [WhiteFideId "1123904"] [BlackFideId "1158244"] [EventType "tourn"] 1. e4 c5 2. Nc3 e6 3. f4 a6 4. a4 Nc6 5. Nf3 b6 6. Bc4 Bb7 7. O-O Nd4 8. d3 Nxf3+ 9. Qxf3 Nf6 10. f5 Be7 11. fxe6 dxe6 12. Be3 Qc7 13. Rae1 Bd6 1/2-1/2

[Event "252nd YMCA Autumn A2 2021"] [Site "Warsaw POL"] [Date "2021.10.29"] [Round "6"] [White "Matyszkiewicz, Wiktor"] [Black "Niedbal, Piotr"] [Result "1/2-1/2"] [WhiteElo "1756"] [BlackElo "1837"] [ECO "B47"] [Opening "Sicilian"] [Variation "Taimanov (Bastrikov) variation"] [EventDate "2021.10.01"] [WhiteFideId "21849218"] [BlackFideId "1158244"] [EventType "tourn"] 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. Be2 a6 7. O-O Nf6 8. Kh1 Bb4 9. Nxc6 bxc6 10. Na4 Be7 11. Qd3 d5 12. f3 O-O 13. Be3 Rb8 14. c3 Rd8 15. Qc2 c5 16. b3 a5 17. e5 Nd7 18. f4 Bb7 19. Bd3 g6 20. Bb5 Nb6 21. Qf2 Nxa4 22. bxa4 Ba8 23. Rab1 Bf8 24. Rfd1 Be7 25. Rd2 Bf8 26. Rdd1 Be7 27. Rd2 Bf8 28. Rdb2 Qa7 29. Rd2 Qc7 30. Rdb2 1/2-1/2

[Event "252nd YMCA Autumn A2 2021"] [Site "Warsaw POL"] [Date "2021.10.22"] [Round "5"] [White "Kalejta, A"] [Black "Niedbal, Piotr"] [Result "0-1"] [WhiteElo "1784"] [BlackElo "1837"] [ECO "B48"] [Opening "Sicilian"] [Variation "Taimanov variation"] [EventDate "2021.10.01"] [WhiteFideId "1170171"] [BlackFideId "1158244"] [EventType "tourn"] 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. Be3 a6 7. Bd3 b5 8. Nxc6 Qxc6 9. O-O Bb7 10. a4 b4 11. Na2 Nf6 12. c3 Nxe4 13. f3 Bc5 14. Bxe4 Bxe3+ 15. Kh1 d5 16. Nxb4 Qc7 17. Bxd5 O-O 18. Re1 Bf4 19. Bxb7 Qxb7 20. Nd3 Bg5 21. Qc2 Rac8 22. Rab1 Rc4 23. Nf2 Rh4 24. Ne4 Be7 25. g3 Rh6 26. Qg2 Qb3 27. Ra1 Rb8 28. Reb1 Rh5 29. Nd2 Qc2 30. Nc4 Qd3 31. Nd2 Rd5 32. Ne4 f5 33. Nf2 Qc2 34. b4 Qxc3 35. Nd1 Qe1+ 36. Qg1 Qxg1+ 37. Kxg1 Rxb4 38. Rxb4 Bxb4 39. Rc1 a5 40. Kf1 Rd2 41. h4 Ra2 42. Rc6 Kf7 43. Ne3 Rxa4 44. Nc4 Ra2 45. g4 Rh2 46. Rc7+ Kg6 47. Ne5+ Kh6 48. g5+ Kh5 49. Rxg7 Kxh4 50. Rxh7+ Kg3 51. Rxh2 Kxh2 52. Ke2 a4 53. Nd3 Bc3 54. Nc1 Kg3 55. Ke3 Kh4 56. Na2 Bb2 57. Kf4 a3 58. Nb4 Kh5 59. Na2 Kg6 60. Nb4 e5+ 0-1

[Event "252nd YMCA Autumn A2 2021"] [Site "Warsaw POL"] [Date "2021.10.15"] [Round "4"] [White "Niedbal, Piotr"] [Black "Adamski, Adam"] [Result "1-0"] [WhiteElo "1837"] [BlackElo "1704"] [ECO "C00"] [Opening "French defence"] [EventDate "2021.10.01"] [WhiteFideId "1158244"] [BlackFideId "1186370"] [EventType "tourn"] 1. e4 e6 2. d4 b6 3. Nd2 Bb7 4. Ngf3 c5 5. c3 Nf6 6. Bd3 d6 7. O-O Be7 8. Re1 Qc7 9. Nf1 Nc6 10. Ng3 h5 11. d5 exd5 12. exd5 Ne5 13. Bb5+ Kf8 14. Nxe5 dxe5 15. c4 a6 16. Ba4 b5 17. Bb3 Rd8 18. Qe2 bxc4 19. Bxc4 Bxd5 20. Bxd5 Rxd5 21. Qxa6 g6 22. Bg5 Rd6 23. Qe2 Re6 24. Ne4 Nxe4 25. Bxe7+ Qxe7 26. Qxe4 Kg7 27. Rac1 Rb8 28. b3 Qa7 29. Qc2 Ra8 30. Re2 Qa6 31. h3 Rc8 32. Qc4 Qxc4 33. Rxc4 Ra6 34. b4 Rca8 35. Rxc5 Rxa2 36. Rcxe5 Rxe2 37. Rxe2 Ra1+ 38. Kh2 Rb1 39. Re4 Rb3 40. g3 Kf6 41. h4 Kf5 42. Rc4 Kf6 43. Kg2 Ke6 44. Kf1 Rb2 45. Ke1 Rb1+ 46. Ke2 Rb2+ 47. Ke3 Rb3+ 48. Kd4 Kd6 49. Ke4 Rb2 50. Kf3 Rb3+ 51. Kg2 Ke6 52. Rf4 f6 53. Rc4 g5 54. hxg5 fxg5 55. Rc5 Rxb4 56. Rxg5 h4 57. g4 Rf4 58. f3 h3+ 59. Kg3 1-0

[Event "252nd YMCA Autumn A2 2021"] [Site "Warsaw POL"] [Date "2021.10.13"] [Round "13"] [White "Niedbal, Piotr"] [Black "Kalejta, A"] [Result "1-0"] [WhiteElo "1837"] [BlackElo "1784"] [ECO "C77"] [Opening "Ruy Lopez"] [Variation "Wormald (Alapin) attack"] [EventDate "2021.10.01"] [WhiteFideId "1158244"] [BlackFideId "1170171"] [EventType "tourn"] 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. Qe2 b5 6. Bb3 Bc5 7. a4 Rb8 8. Nc3 O-O 9. axb5 axb5 10. O-O b4 11. Nd5 d6 12. d4 Nxd5 13. dxc5 Nf4 14. Bxf4 exf4 15. Rfd1 Qf6 16. cxd6 cxd6 17. Bd5 Ne5 18. Nxe5 dxe5 19. Ra7 Qg6 20. Rxf7 Be6 21. Rxf8+ Kxf8 22. Bxe6 Qxe6 23. h3 Qe7 24. Qc4 Qb7 25. Qc5+ Qe7 26. Rd5 Qxc5 27. Rxc5 Ke7 28. Rxe5+ Kf6 29. Rf5+ Ke6 30. Rxf4 Rc8 31. e5 Rxc2 32. Rxb4 Kxe5 33. Rb7 g5 34. b4 Rb2 35. b5 h5 36. b6 Kd6 37. Rg7 g4 38. hxg4 hxg4 39. Rxg4 Kc6 40. Rg6+ Kb7 41. f3 1-0

[Event "252nd YMCA Autumn A2 2021"] [Site "Warsaw POL"] [Date "2021.10.08"] [Round "3"] [White "Lewandrowski, T"] [Black "Niedbal, Piotr"] [Result "0-1"] [WhiteElo "1814"] [BlackElo "1837"] [ECO "A45"] [Opening "Queen's pawn game"] [EventDate "2021.10.01"] [WhiteFideId "1154753"] [BlackFideId "1158244"] [EventType "tourn"] 1. d4 Nf6 2. Bf4 d5 3. e3 c5 4. c3 Nc6 5. Nd2 e6 6. Ngf3 cxd4 7. exd4 Qb6 8. Qb3 Qd8 9. Bb5 Bd7 10. h4 a6 11. Bxc6 Bxc6 12. h5 h6 13. Ne5 Bd6 14. Ndf3 Qc7 15. g3 Ne4 16. Qc2 Qe7 17. Kf1 Bxe5 18. Nxe5 Nf6 19. Kg2 Nd7 20. Nxc6 bxc6 21. b4 Nb6 22. a4 O-O 23. Rh4 f5 24. Re1 Nc4 25. Rhh1 Rae8 26. Qd3 Qf7 27. Re2 Re7 28. Qf3 Ree8 29. Be5 Re7 30. Qf4 Rd7 31. a5 Re8 32. Qh4 Rf8 33. Bf4 Re7 34. Rhe1 Kh8 35. f3 Kh7 36. Be5 Ree8 37. Rh1 Re7 38. Qf4 Rd7 39. Rh4 Qe7 40. Qc1 Qf7 41. Qh1 Re7 42. Rf4 Qe8 43. Qh4 Ref7 44. Kg1 Qd7 45. Qh2 Qb7 46. Kh1 Qb5 47. Qf2 Qa4 48. Qe1 Qb5 49. Kh2 Qb7 50. Rg2 Qe7 51. Kg1 Qd8 52. g4 Nxe5 53. Qxe5 Qf6 54. Qe3 Qe7 55. gxf5 Rxf5 56. Rfg4 R8f7 57. Qd3 Kh8 58. Qxa6 Rxf3 59. Qc8+ Rf8 60. Qxc6 Rf1+ 61. Kh2 Qf7 62. Rg6 Qf4+ 63. R6g3 Qh4+ 64. Rh3 Qf4+ 65. Rhg3 Rf2 66. Qxe6 Rxg2+ 67. Kxg2 Qf1+ 68. Kh2 Rf2+ 0-1

[Event "252nd YMCA Autumn A2 2021"] [Site "Warsaw POL"] [Date "2021.10.01"] [Round "2"] [White "Niedbal, Piotr"] [Black "Kuc, M"] [Result "1-0"] [WhiteElo "1837"] [BlackElo "1910"] [ECO "B32"] [Opening "Sicilian defence"] [EventDate "2021.10.01"] [WhiteFideId "1158244"] [BlackFideId "1123904"] [EventType "tourn"] 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 d6 5. Nc3 e6 6. Be2 Bd7 7. Ndb5 Bc8 8. Bf4 Ne5 9. Qd4 a6 10. Nxd6+ Qxd6 11. Bxe5 Qxd4 12. Bxd4 Nf6 13. Bf3 Nd7 14. O-O e5 15. Be3 Bc5 16. Bxc5 Nxc5 17. Nd5 O-O 18. Rad1 Be6 19. Nc7 Rac8 20. Nxe6 Nxe6 21. c3 Rcd8 22. Rd5 Nf4 23. Rxe5 Rd2 24. Rf5 Ne2+ 25. Bxe2 Rxe2 26. Rb1 Rxe4 27. Rd5 Rfe8 28. Kf1 Kf8 29. Rbd1 Re2 30. R5d2 R2e7 31. Rd8 Re1+ 32. Rxe1 Rxd8 33. Ke2 Ke7 34. Rd1 Rc8 35. Rd4 b5 36. Kd3 Rc6 37. b3 f5 38. Rd5 Ke6 39. Rd8 Ke7 40. Rd4 Ke6 41. c4 bxc4+ 42. Rxc4 Rd6+ 43. Kc3 g5 44. a4 h5 45. h4 g4 46. g3 Ke5 47. b4 Rd1 48. b5 axb5 49. axb5 Kd5 50. Rf4 Ke5 51. Kc4 Rc1+ 52. Kb4 1-0

[Event "252nd YMCA Autumn A2 2021"] [Site "Warsaw POL"] [Date "2021.10.01"] [Round "1"] [White "Niedbal, Piotr"] [Black "Matyszkiewicz, Wiktor"] [Result "1-0"] [WhiteElo "1837"] [BlackElo "1756"] [ECO "B67"] [Opening "Sicilian"] [Variation "Richter-Rauzer, Rauzer attack, 7...a6 defence, 8...Bd7"] [EventDate "2021.10.01"] [WhiteFideId "1158244"] [BlackFideId "21849218"] [EventType "tourn"] 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Qd2 a6 8. O-O-O Bd7 9. f4 b5 10. Qe3 Nxd4 11. Qxd4 h6 12. Bxf6 gxf6 13. Be2 h5 14. Rhf1 Rb8 15. Bd3 b4 16. Ne2 a5 17. f5 e5 18. Qd5 Qc7 19. Bc4 Bc6 20. Qd3 a4 21. Kb1 Qb7 22. Bd5 Bxd5 23. exd5 Qb5 24. Qe4 Rc8 25. Rfe1 Kd7 26. Qh4 Qc4 27. Qxf6 Qxc2+ 28. Ka1 Rh7 29. Qh4 Rc4 30. Qh3 f6 31. Qe3 Bh6 32. Qa7+ Rc7 33. Qa5 Bd2 34. Qb5+ Kd8 35. Nd4 Bxe1 36. Nxc2 Rxc2 37. Rxe1 Rhc7 38. Rb1 b3 39. a3 Rxg2 40. Qxa4 Rxh2 41. Qxb3 Rg2 42. Qb8+ Kd7 43. Qf8 h4 44. Qxf6 h3 45. Qe6+ Kd8 46. f6 1-0