[Event "Bydgoszcz op-A"]
[Site "Bydgoszcz"]
[Date "2023.07.01"]
[Round "8"]
[White "Stachecki, Mikolaj"]
[Black "Niharika, Challa"]
[Result "0-1"]
[ECO "B90"]
[WhiteElo "2016"]
[BlackElo "2058"]
[PlyCount "54"]
[EventDate "2023.06.24"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. h4 b5 7. a4 b4 8. Nd5 e6 9. Nxf6+ Qxf6 10. a5 Bb7 11. f3 Nd7 12. Bc4 Qe5 13. 0-0 Qc5 14. Bb3 e5 15. Be3 exd4 16. Bxd4 Qh5 17. Re1 Bc6 18. e5 dxe5 19. Bxe5 Nxe5 20. Qd4 f6 21. Qc4 Bd7 22. Rad1 Rc8 23. Qd5 Bc5+ 24. Kf1 Bb5+ 25. Bc4 Bxc4+ 26. Qxc4 Qf7 27. Qxa6 0-0 0-1

[Event "Bydgoszcz op-A"]
[Site "Bydgoszcz"]
[Date "2023.06.30"]
[Round "7"]
[White "Stachecki, Mikolaj"]
[Black "Meers, Hubert"]
[Result "0-1"]
[ECO "B13"]
[WhiteElo "2016"]
[BlackElo "2071"]
[PlyCount "111"]
[EventDate "2023.06.24"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. Bd3 Nc6 5. c3 Qc7 6. h3 e6 7. Nf3 Bd6 8. 0-0 Nge7 9. Re1 Bd7 10. Be3 f6 11. c4 dxc4 12. Bxc4 Na5 13. Bd3 Nc4 14. Bc1 Rc8 15. Nbd2 Nxd2 16. Nxd2 0-0 17. Ne4 Nc6 18. Qh5 Be8 19. Qh4 Bg6 20. Nxd6 Qxd6 21. Bxg6 hxg6 22. Qe4 Kf7 23. Rd1 f5 24. Qf3 Qd5 25. Qxd5 exd5 26. f3 Rfe8 27. Kf2 Nd8 28. b3 Re6 29. Bg5 Rc2+ 30. Rd2 Rec6 31. Ke1 Ne6 32. Be3 R6c3 33. Ke2 b5 34. Kd1 Rxd2+ 35. Kxd2 Rc6 36. a4 Ra6 37. Kc3 Ke7 38. Kb4 Kd6 39. a5 Rc6 40. a6 f4 41. Bf2 Rc2 42. Rf1 Kc6 43. g3 Nc7 44. Be1 Nxa6+ 45. Ka3 fxg3 46. b4 g2 47. Rg1 Nc7 48. Kb3 Re2 49. Kc3 Ne6 50. Bd2 Nxd4 51. Kxd4 Rxd2+ 52. Kc3 Rf2 53. f4 Kd6 54. Kd3 Ke6 55. Ke3 Rb2 56. Kf3 0-1

[Event "Bydgoszcz op-A"]
[Site "Bydgoszcz"]
[Date "2023.06.29"]
[Round "6"]
[White "Mulawa, Cyprian"]
[Black "Stachecki, Mikolaj"]
[Result "1-0"]
[ECO "D30"]
[WhiteElo "2175"]
[BlackElo "2016"]
[PlyCount "77"]
[EventDate "2023.06.24"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. Nf3 d5 2. d4 Nf6 3. g3 e6 4. Bg2 Be7 5. c4 dxc4 6. Qa4+ c6 7. Qxc4 b5 8. Qc2 Bb7 9. 0-0 0-0 10. Nc3 Nbd7 11. Bf4 Nh5 12. Be3 a6 13. Ne5 Qc7 14. Nxd7 Qxd7 15. Ne4 Nf6 16. Nc5 Bxc5 17. dxc5 Qe7 18. b4 Rfd8 19. Rfd1 Rxd1+ 20. Rxd1 Rd8 21. Bd4 Qd7 22. Rd3 Qe7 23. Qd2 e5 24. Bb2 Rd7 25. Rd6 Rxd6 26. cxd6 Qe6 27. f4 exf4 28. Bxf6 Qxf6 29. gxf4 Qd8 30. d7 f5 31. Qd6 Kf7 32. e3 Ba8 33. Bf3 g6 34. Bd1 Bb7 35. Bb3+ Kg7 36. Qe5+ Kf8 37. Qe6 Kg7 38. Qe8 Qh4 39. Qg8+ 1-0

[Event "Bydgoszcz op-A"]
[Site "Bydgoszcz"]
[Date "2023.06.28"]
[Round "5"]
[White "Stachecki, Mikolaj"]
[Black "Karut, Kacper"]
[Result "1/2-1/2"]
[ECO "C88"]
[WhiteElo "2016"]
[BlackElo "1954"]
[PlyCount "58"]
[EventDate "2023.06.24"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 0-0 8. a4 Rb8 9. axb5 axb5 10. h3 d6 11. d3 h6 12. Be3 Re8 13. Nc3 Bf8 14. Nd5 Be6 15. Nxf6+ Qxf6 16. c3 Ra8 17. Rxa8 Rxa8 18. d4 Ne7 19. Bxe6 Qxe6 20. Qd3 c6 21. Rd1 exd4 22. cxd4 Qc4 23. Qb1 Qa2 24. Qc2 Qc4 25. Rc1 Qxc2 26. Rxc2 Ra4 27. Kf1 Rc4 28. Rxc4 bxc4 29. Nd2 d5 1/2-1/2

[Event "Bydgoszcz op-A"]
[Site "Bydgoszcz"]
[Date "2023.06.26"]
[Round "3"]
[White "Goraj, Barbara"]
[Black "Stachecki, Mikolaj"]
[Result "1-0"]
[ECO "E32"]
[WhiteElo "2176"]
[BlackElo "2016"]
[PlyCount "73"]
[EventDate "2023.06.24"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 0-0 5. a3 Bxc3+ 6. Qxc3 d6 7. Bg5 Nbd7 8. e3 b6 9. Bd3 Bb7 10. f3 c5 11. dxc5 Nxc5 12. b4 Ncd7 13. Ne2 Rc8 14. Qd4 Ne5 15. 0-0 Nxd3 16. Qxd3 d5 17. cxd5 Qxd5 18. Qxd5 Nxd5 19. e4 Ba6 20. exd5 Bxe2 21. Rf2 Bc4 22. Be7 Rfe8 23. d6 Bb5 24. a4 Bd7 25. b5 Rb8 26. a5 Rb7 27. a6 Rbb8 28. Rc2 Rbc8 29. Rac1 Rxc2 30. Rxc2 Rc8 31. Rc7 Rxc7 32. dxc7 f6 33. Bc5 Kf7 34. Bxb6 Bc8 35. Bc5 Ke8 36. b6 axb6 37. a7 1-0

[Event "Bydgoszcz op-A"]
[Site "Bydgoszcz"]
[Date "2023.06.25"]
[Round "2"]
[White "Stachecki, Mikolaj"]
[Black "Wikar, Martyna"]
[Result "0-1"]
[ECO "B90"]
[WhiteElo "2016"]
[BlackElo "2176"]
[PlyCount "60"]
[EventDate "2023.06.24"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. h4 e5 7. Nb3 Be6 8. f4 Qc7 9. f5 Bc4 10. g4 d5 11. Nxd5 Bxd5 12. exd5 e4 13. Rh3 Bd6 14. Bg2 h5 15. g5 Ng4 16. Qe2 0-0 17. Be3 Nd7 18. Kf1 Nde5 19. Bd4 Nf3 20. Qxe4 Nxd4 21. Nxd4 Rfe8 22. Qd3 Bc5 23. c3 Qf4+ 24. Qf3 Qd2 25. Kg1 Bxd4+ 26. cxd4 Qxd4+ 27. Kh1 Nf2+ 28. Kh2 Nxh3 29. Rf1 Re3 30. Qxh5 Qe5+ 0-1

[Event "Bydgoszcz op-A"]
[Site "Bydgoszcz"]
[Date "2023.06.24"]
[Round "1"]
[White "Czernek, Tymon"]
[Black "Stachecki, Mikolaj"]
[Result "1-0"]
[ECO "B62"]
[WhiteElo "2269"]
[BlackElo "2016"]
[PlyCount "91"]
[EventDate "2023.06.24"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bg5 e6 7. Qd3 Be7 8. 0-0-0 0-0 9. f4 Qb6 10. Be2 h6 11. Bh4 Nxe4 12. Nxc6 Bxh4 13. Nxe4 Qxc6 14. Nxd6 Rd8 15. Bf3 Qc7 16. Qc4 Qb6 17. Ne4 Qe3+ 18. Kb1 Qxf4 19. Qb5 Qc7 20. Rxd8+ Qxd8 21. Rd1 Qf8 22. g4 Qe7 23. Nd6 Bf6 24. a3 Rb8 25. Nxc8 Rxc8 26. Rd7 Qf8 27. Rxb7 Bd4 28. Be4 Be3 29. Bd3 g6 30. h4 Bb6 31. Qe5 Qg7 32. Qf4 Rf8 33. c3 Rc8 34. h5 gxh5 35. gxh5 Rf8 36. Bg6 Bc5 37. Ka2 Bb6 38. Rd7 Bc5 39. Bc2 Qg5 40. Qe4 Kg7 41. Qxe6 Qxh5 42. Qe4 Bb6 43. Qh7+ Kf6 44. Bb3 Be3 45. Rd6+ Ke7 46. Re6+ 1-0

[Event "POL-ch U18"]
[Site "Jastrzebia Gora"]
[Date "2023.??.??"]
[Round "2"]
[White "Bem, Tymoteusz"]
[Black "Stachecki, Mikolaj"]
[Result "0-1"]
[ECO "E81"]
[WhiteElo "1748"]
[BlackElo "2015"]
[PlyCount "72"]
[EventDate "2023.03.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 0-0 6. Be3 a6 7. Qd2 Nbd7 8. Nh3 c5 9. d5 b5 10. cxb5 Qa5 11. Nf2 Nb6 12. Be2 Nfd7 13. Bh6 Bxh6 14. Qxh6 Na4 15. Rc1 axb5 16. h4 Nxc3 17. bxc3 Rd8 18. h5 Nf8 19. f4 b4 20. f5 bxc3 21. Ng4 Qxa2 22. Rd1 c2 23. Rc1 Qb2 24. hxg6 fxg6 25. Qg5 Ra1 26. Kf2 Qd4+ 27. Kg3 Rxc1 28. Rxc1 Re8 29. Bf3 h5 30. Nh6+ Kg7 31. Bxh5 Qf6 32. Qe3 gxh5 33. Rh1 Qxh6 34. Qc3+ Kf7 35. Qxc2 Qe3+ 36. Kh2 Nd7 0-1

[Event "POL-ch U18"]
[Site "Jastrzebia Gora"]
[Date "2023.??.??"]
[Round "3"]
[White "Kotowicz, Kamil"]
[Black "Stachecki, Mikolaj"]
[Result "1/2-1/2"]
[ECO "D31"]
[WhiteElo "1828"]
[BlackElo "2015"]
[PlyCount "100"]
[EventDate "2023.03.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. cxd5 exd5 4. Bf4 Bd6 5. Bxd6 Qxd6 6. e3 Bf5 7. Nc3 c6 8. Bd3 Bg6 9. Nge2 Nf6 10. Nf4 0-0 11. 0-0 Nbd7 12. Rb1 Rfe8 13. Nxg6 hxg6 14. b4 Rad8 15. Re1 Ne4 16. Bxe4 dxe4 17. Qe2 Nf6 18. Rec1 Rc8 19. a3 g5 20. Na4 b6 21. Nb2 Red8 22. Rd1 Qe7 23. Rbc1 g6 24. Rc2 Rc7 25. Rdc1 Rdc8 26. Nc4 c5 27. dxc5 bxc5 28. b5 Nd7 29. Rd1 Ne5 30. Nxe5 Qxe5 31. Qc4 Qe7 32. Rcd2 Kg7 33. g3 Rh8 34. a4 Qf6 35. Qxe4 Re7 36. Qd5 g4 37. Qxc5 Re5 38. Qd4 Qf5 39. h4 g5 40. Qd7 Qf3 41. Rd4 Rf5 42. R1d2 gxh4 43. Qc6 hxg3 44. Qxf3 gxf3 45. Rg4+ Kf6 46. Rxg3 Ke5 47. Rd4 Rfh5 48. Kf1 Rh1+ 49. Rg1 Rc8 50. Rd1 Rh2 1/2-1/2

[Event "POL-ch U18"]
[Site "Jastrzebia Gora"]
[Date "2023.??.??"]
[Round "5"]
[White "Pieczulis, Blazej"]
[Black "Stachecki, Mikolaj"]
[Result "0-1"]
[ECO "E61"]
[WhiteElo "1784"]
[BlackElo "2015"]
[PlyCount "140"]
[EventDate "2023.03.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. Bg5 d6 5. Nf3 0-0 6. e3 c5 7. d5 h6 8. Bh4 g5 9. Bg3 Nh5 10. Nd2 Nxg3 11. hxg3 f5 12. f4 e5 13. dxe6 Re8 14. Kf2 Bxe6 15. Bd3 Nc6 16. Nd5 Ne7 17. Qc2 Rf8 18. Rae1 Nxd5 19. cxd5 Bxd5 20. Bxf5 Qf6 21. Be4 Bxe4 22. Qxe4 Qf7 23. b3 d5 24. Qc2 b6 25. Nf3 Qf5 26. Qxf5 Rxf5 27. g4 Rf7 28. fxg5 hxg5 29. Rh5 Bf6 30. Ke2 Rg7 31. Rf1 Re8 32. Kd2 Re4 33. Rh6 Re6 34. Kd3 Rge7 35. Re1 Kg7 36. Rh5 Kg6 37. Nd2 b5 38. Rh3 c4+ 39. bxc4 dxc4+ 40. Kc2 Ra6 41. Kb1 c3 42. Nb3 c2+ 43. Kxc2 Rxa2+ 44. Kd3 Rxg2 45. Nc5 Rxg4 46. Reh1 Bg7 47. Rb1 b4 48. Rh2 Rc7 49. Nb3 Rc3+ 50. Kd2 Re4 51. Re2 g4 52. Nc1 a5 53. Nd3 Bh6 54. Rh1 Bg5 55. Nf4+ Bxf4 56. exf4 Rxe2+ 57. Kxe2 a4 58. Kd2 Rf3 59. Rb1 Rxf4 60. Ke3 Kf5 61. Rc1 Rf3+ 62. Kd4 g3 63. Rc8 Kg4 64. Ke4 Rf5 65. Rg8+ Rg5 66. Rd8 g2 67. Rd1 Kg3 68. Ke3 Kh2 69. Kf2 g1Q+ 70. Rxg1 Rf5+ 0-1

[Event "POL-ch U18"]
[Site "Jastrzebia Gora"]
[Date "2023.??.??"]
[Round "6"]
[White "Stachecki, Mikolaj"]
[Black "Backiel, Hubert"]
[Result "0-1"]
[ECO "B40"]
[WhiteElo "2015"]
[BlackElo "2127"]
[PlyCount "74"]
[EventDate "2023.03.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 a6 3. a4 e6 4. Nf3 Nc6 5. d4 cxd4 6. Nxd4 Nf6 7. Be2 Bb4 8. 0-0 0-0 9. Nxc6 bxc6 10. e5 Nd5 11. Ne4 Qc7 12. f4 f5 13. exf6 Nxf6 14. Bd3 Nxe4 15. Bxe4 d5 16. Bd3 Bd6 17. Qe2 Bd7 18. Kh1 e5 19. fxe5 Rxf1+ 20. Qxf1 Rf8 21. Qe2 Bxe5 22. c3 Re8 23. Bd2 g6 24. Qf2 Bxh2 25. Rf1 Bc8 26. Bh6 Bd6 27. Qf6 Qe7 28. Qf2 a5 29. b3 Bd7 30. Bc2 Kh8 31. g3 Bh3 32. Rd1 Bc5 33. Qf3 Qe6 34. Rb1 Bg4 35. Qf1 Bf3+ 36. Kh2 Qe2+ 37. Kh3 Bg2+ 0-1

[Event "POL-ch U18"]
[Site "Jastrzebia Gora"]
[Date "2023.??.??"]
[Round "8"]
[White "Stachecki, Mikolaj"]
[Black "Lis, Maksymilian"]
[Result "1-0"]
[ECO "B42"]
[WhiteElo "2015"]
[BlackElo "1784"]
[PlyCount "95"]
[EventDate "2023.03.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Bc5 6. Nb3 Ba7 7. 0-0 d6 8. Qe2 Nf6 9. Bf4 Nc6 10. c4 e5 11. Be3 Bxe3 12. Qxe3 Be6 13. Nc3 Rc8 14. a3 Na5 15. Nxa5 Qxa5 16. b4 Qc7 17. Nd5 Bxd5 18. exd5 0-0 19. Bf5 Ra8 20. Rfc1 a5 21. Qb3 g6 22. Bh3 axb4 23. axb4 b6 24. g3 Ra7 25. Rxa7 Qxa7 26. Qe3 Ra8 27. Bg2 Qa3 28. Qd2 Ra4 29. Rb1 Nh5 30. Bf1 Qa2 31. Rb2 Qa1 32. Qc2 h6 33. c5 bxc5 34. bxc5 dxc5 35. Rb8+ Kh7 36. Qxc5 Ra8 37. Rxa8 Qxa8 38. d6 Ng7 39. d7 Qd8 40. Qc8 Ne6 41. Bc4 Qa5 42. Bxe6 fxe6 43. d8Q Qe1+ 44. Kg2 Qe4+ 45. f3 Qe2+ 46. Kh3 Qf1+ 47. Kg4 h5+ 48. Kg5 1-0

[Event "POL-ch U18"]
[Site "Jastrzebia Gora"]
[Date "2023.??.??"]
[Round "4"]
[White "Stachecki, Mikolaj"]
[Black "Smetek, Michal"]
[Result "1/2-1/2"]
[ECO "B15"]
[WhiteElo "2015"]
[BlackElo "1787"]
[PlyCount "76"]
[EventDate "2023.03.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nf6 5. Nxf6+ exf6 6. c3 Bd6 7. Bd3 0-0 8. Qc2 Re8+ 9. Ne2 h5 10. Be3 Qc7 11. 0-0-0 c5 12. Ng3 cxd4 13. Bh7+ Kf8 14. Bxd4 Nc6 15. Bf5 Nxd4 16. Rxd4 Be5 17. Rdd1 Bxf5 18. Qxf5 g6 19. Qd7 Qb6 20. Qd2 f5 21. Rhe1 Qc7 22. Kb1 Bf6 23. h3 Kg7 24. Ne2 b5 25. Nf4 Qc4 26. Nd5 Rxe1 27. Qxe1 Rd8 28. Nxf6 Rxd1+ 29. Qxd1 Kxf6 30. f3 f4 31. Qe1 Qd3+ 32. Kc1 Kf5 33. b3 h4 34. Kb2 g5 35. a4 bxa4 36. bxa4 Qc4 37. Qb1+ Kf6 38. Qd1 Kg6 1/2-1/2

[Event "POL-ch U18"]
[Site "Jastrzebia Gora"]
[Date "2023.??.??"]
[Round "1"]
[White "Stachecki, Mikolaj"]
[Black "Turski, Bartlomiej"]
[Result "0-1"]
[ECO "A30"]
[WhiteElo "2015"]
[BlackElo "2352"]
[PlyCount "88"]
[EventDate "2023.03.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]

1. Nf3 c5 2. c4 Nf6 3. Nc3 e6 4. e3 b6 5. b3 Bb7 6. Bb2 Be7 7. Be2 0-0 8. 0-0 a6 9. d4 cxd4 10. Nxd4 Qc7 11. Rc1 Re8 12. Bf3 Bf8 13. Bxb7 Qxb7 14. Qf3 Qxf3 15. Nxf3 Nc6 16. Rfd1 Reb8 17. Ne2 Rb7 18. Ne5 Nxe5 19. Bxe5 b5 20. Rd2 Ne4 21. Rd4 f5 22. f3 d6 23. Bg3 Nxg3 24. Nxg3 Rc8 25. Re1 bxc4 26. Rxc4 Rxc4 27. bxc4 Rb4 28. e4 fxe4 29. Rxe4 Kf7 30. Ne2 Rb1+ 31. Kf2 Rb2 32. a3 Ra2 33. Rf4+ Ke8 34. Re4 Kf7 35. Rf4+ Ke7 36. c5 d5 37. Ra4 Kd7 38. Ra5 Rc2 39. Rxa6 Bxc5+ 40. Ke1 Be3 41. Ra4 e5 42. f4 d4 43. fxe5 d3 44. e6+ Ke7 0-1

[Event "POL-ch U18"]
[Site "Jastrzebia Gora"]
[Date "2023.??.??"]
[Round "7"]
[White "Zdybel, Przemyslaw"]
[Black "Stachecki, Mikolaj"]
[Result "1/2-1/2"]
[ECO "B26"]
[WhiteElo "2268"]
[BlackElo "2015"]
[PlyCount "90"]
[EventDate "2023.03.11"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 e6 6. Be3 d6 7. Qd2 Nge7 8. Bh6 Bxh6 9. Qxh6 Ng8 10. Qd2 Nd4 11. Nd1 Ne7 12. c3 Ndc6 13. f4 f5 14. Nf3 0-0 15. 0-0 Rb8 16. exf5 exf5 17. Re1 Kg7 18. d4 Ng8 19. d5 Nce7 20. Ng5 Nf6 21. Nf2 Re8 22. Rad1 Qc7 23. h3 h6 24. Ne6+ Bxe6 25. Rxe6 Neg8 26. g4 Rxe6 27. dxe6 Rd8 28. c4 Kh7 29. g5 Ne8 30. gxh6 Kxh6 31. h4 Qe7 32. Nh3 Kg7 33. Ng5 Nh6 34. b4 Rc8 35. bxc5 Rxc5 36. Qd4+ Qf6 37. Bxb7 a5 38. Ba6 Qxd4+ 39. Rxd4 Kf6 40. Bb5 Ke7 41. Bxe8 Kxe8 42. Kf2 Ke7 43. Ke2 Ng4 44. a4 Nf6 45. Kd3 Rc8 1/2-1/2

[Event "Ustron op-B"]
[Site "Ustron"]
[Date "2022.08.20"]
[Round "9"]
[White "Zabron, Maksym"]
[Black "Stachecki, Mikolaj"]
[Result "0-1"]
[ECO "D35"]
[WhiteElo "2064"]
[BlackElo "1928"]
[PlyCount "64"]
[EventDate "2022.08.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 c5 7. Rb1 cxd4 8. cxd4 Nc6 9. Bb5 a6 10. Bxc6+ bxc6 11. Nf3 c5 12. 0-0 Be7 13. Qc2 cxd4 14. Rd1 0-0 15. Rxd4 Qe8 16. Qc7 f6 17. e5 f5 18. Rd1 Rf7 19. Qc4 Bf8 20. Be3 h6 21. Bb6 Bb7 22. Nd4 Bd5 23. Qe2 Rb7 24. Ba5 Rxb1 25. Rxb1 Qa4 26. Qd2 Qxa2 27. Qxa2 Bxa2 28. Rb7 Rc8 29. Kf1 Rc5 30. Bc7 Bd5 31. Ra7 Rc1+ 32. Ke2 Bc5 0-1

[Event "Ustron op-B"]
[Site "Ustron"]
[Date "2022.08.19"]
[Round "8"]
[White "Stachecki, Mikolaj"]
[Black "Klusak, Piotr"]
[Result "1-0"]
[ECO "C96"]
[WhiteElo "1928"]
[BlackElo "1980"]
[PlyCount "69"]
[EventDate "2022.08.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 d6 8. c3 0-0 9. h3 Na5 10. Bc2 c5 11. d4 Nd7 12. d5 Nb6 13. Nbd2 Qc7 14. Nf1 Nb7 15. b3 c4 16. b4 a5 17. Ng3 axb4 18. cxb4 Na4 19. Nh2 Nd8 20. Qf3 f6 21. Ng4 Nf7 22. h4 Qd8 23. Nf5 h5 24. Nh2 g6 25. Ne3 Kg7 26. Qg3 Rg8 27. Kh1 Kh7 28. Qf3 Nh6 29. Rg1 Bd7 30. g4 hxg4 31. Nexg4 Nxg4 32. Nxg4 Bxg4 33. Rxg4 Qc8 34. Be3 Kg7 35. Rxg6+ 1-0

[Event "Ustron op-B"]
[Site "Ustron"]
[Date "2022.08.18"]
[Round "7"]
[White "Jedrusik, Adam"]
[Black "Stachecki, Mikolaj"]
[Result "1/2-1/2"]
[ECO "D41"]
[WhiteElo "1986"]
[BlackElo "1928"]
[PlyCount "74"]
[EventDate "2022.08.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 c5 7. Nf3 cxd4 8. cxd4 Bb4+ 9. Bd2 Bxd2+ 10. Qxd2 0-0 11. Rc1 b6 12. Bd3 Bb7 13. 0-0 Nd7 14. Qe3 Rc8 15. h4 Qe7 16. Bb1 Rfd8 17. a3 a5 18. Rfe1 b5 19. Qd3 b4 20. h5 h6 21. axb4 axb4 22. Rcd1 Rc3 23. Qd2 Nf6 24. d5 exd5 25. e5 Nxh5 26. Qd4 Bc8 27. Ba2 Be6 28. Rb1 Ra3 29. Bb3 g6 30. Qd2 Kh7 31. Rec1 Ng7 32. Nd4 Bd7 33. Bxd5 Qxe5 34. Nf3 Qf5 35. Qxb4 Ra4 36. Qe7 Rc8 37. Qxf7 Qxf7 1/2-1/2

[Event "Ustron op-B"]
[Site "Ustron"]
[Date "2022.08.17"]
[Round "6"]
[White "Stachecki, Mikolaj"]
[Black "Starosciak, Szymon"]
[Result "1/2-1/2"]
[ECO "C47"]
[WhiteElo "1928"]
[BlackElo "1989"]
[PlyCount "43"]
[EventDate "2022.08.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Nf6 5. Nc3 Bb4 6. Nxc6 bxc6 7. Bd3 d5 8. Bd2 0-0 9. 0-0 Bxc3 10. Bxc3 dxe4 11. Bxf6 Qxf6 12. Bxe4 Qxb2 13. Bxc6 Rb8 14. Rb1 Qxb1 15. Qxb1 Rxb1 16. Rxb1 Rd8 17. Bf3 Bf5 18. Rb7 Bxc2 19. Rxc7 Be4 20. Rxa7 Bxf3 21. gxf3 g5 22. a4 1/2-1/2

[Event "Ustron op-B"]
[Site "Ustron"]
[Date "2022.08.14"]
[Round "3"]
[White "Becker, Carsten"]
[Black "Stachecki, Mikolaj"]
[Result "0-1"]
[ECO "D05"]
[WhiteElo "2007"]
[BlackElo "1928"]
[PlyCount "86"]
[EventDate "2022.08.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. e3 e6 4. Bd3 c5 5. b3 Nc6 6. Nbd2 b6 7. Ne5 Nxe5 8. dxe5 Nd7 9. Bb2 g6 10. Qg4 Bg7 11. f4 f5 12. exf6 Nxf6 13. Bxg6+ hxg6 14. Qxg6+ Kf8 15. 0-0 Qe8 16. Qg5 Nh5 17. Be5 Qe7 18. g4 Nf6 19. Nf3 Ba6 20. Rf2 Ne8 21. Bxg7+ Qxg7 22. Ne5 Nd6 23. Ng6+ Ke8 24. Qe5 Qxe5 25. fxe5 Rg8 26. exd6 Rxg6 27. h3 Rd8 28. Kg2 Rxd6 29. Kg3 Rd7 30. Rf4 Rf7 31. Rd1 Rfg7 32. c4 Bb7 33. Rdf1 Ke7 34. cxd5 exd5 35. Rf8 d4 36. exd4 cxd4 37. Rb8 Kd6 38. Rff8 Bc6 39. Rbd8+ Rd7 40. Kf4 Rxd8 41. Rxd8+ Bd7 42. Rh8 Re6 43. h4 d3 0-1

[Event "Ustron op-B"]
[Site "Ustron"]
[Date "2022.08.13"]
[Round "2"]
[White "Stachecki, Mikolaj"]
[Black "Sroka, Janusz"]
[Result "1/2-1/2"]
[ECO "C55"]
[WhiteElo "1928"]
[BlackElo "2020"]
[PlyCount "61"]
[EventDate "2022.08.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 h6 5. 0-0 d6 6. h3 g5 7. Nh2 Bg7 8. a4 Ne7 9. Nc3 c6 10. Re1 Ng6 11. Be3 0-0 12. Ba2 a5 13. d4 Qe7 14. Qe2 Nf4 15. Bxf4 gxf4 16. dxe5 dxe5 17. Rad1 Be6 18. Bxe6 Qxe6 19. Nf3 Kh7 20. Rd3 Rg8 21. Red1 Bf8 22. Nh4 Bc5 23. Nf5 Rg6 24. Rd8 Rxd8 25. Rxd8 Ne8 26. Qd3 Nd6 27. Rb8 Ba7 28. Ra8 Bb6 29. Rb8 Bc7 30. Ra8 Bb6 31. Rb8 1/2-1/2

[Event "Warsaw Najdorf Memorial op-A"]
[Site "Warsaw"]
[Date "2022.07.17"]
[Round "9"]
[White "Vanduyfhuys, Igor"]
[Black "Stachecki, Mikolaj"]
[Result "0-1"]
[ECO "B62"]
[WhiteElo "1959"]
[BlackElo "1918"]
[PlyCount "48"]
[EventDate "2022.07.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Qd3 Be7 8. 0-0-0 0-0 9. Qe3 Ng4 10. Qg3 Bxg5+ 11. f4 Nxd4 12. Qxg4 Bf6 13. e5 dxe5 14. fxe5 Bxe5 15. Nb5 f5 16. Qh5 Qf6 17. Nxd4 Bxd4 18. c3 Be3+ 19. Kb1 e5 20. Bc4+ Kh8 21. Rd5 g6 22. Qe2 f4 23. g4 Be6 24. Rd6 Bxc4 0-1

[Event "Warsaw Najdorf Memorial op-A"]
[Site "Warsaw"]
[Date "2022.07.16"]
[Round "8"]
[White "Stachecki, Mikolaj"]
[Black "Mazur, Maciej"]
[Result "1/2-1/2"]
[ECO "B01"]
[WhiteElo "1918"]
[BlackElo "1757"]
[PlyCount "101"]
[EventDate "2022.07.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. d4 Nf6 5. Bc4 Bg4 6. Nge2 Nc6 7. Bd2 Bxe2 8. Nxe2 Qh5 9. 0-0 0-0-0 10. c3 e5 11. Qa4 exd4 12. Nxd4 Nxd4 13. cxd4 Bd6 14. h3 Kb8 15. Rfe1 g5 16. Qb5 Rhg8 17. Qf5 Qg6 18. Qxg6 Rxg6 19. Bxf7 Rg7 20. Be6 g4 21. Re2 gxh3 22. Bxh3 Nd5 23. Rae1 Nf4 24. Bxf4 Bxf4 25. g3 Bd6 26. Re4 a6 27. Rh4 Be7 28. Rhe4 Bf6 29. Re8 Rg8 30. Rxg8 Rxg8 31. b3 Bxd4 32. Kg2 Bc5 33. Re6 Rg6 34. f4 Rxe6 35. Bxe6 c6 36. g4 h6 37. Kf3 Kc7 38. Ke4 Kd6 39. Kf5 Be3 40. Bg8 Ke7 41. g5 hxg5 42. fxg5 b5 43. g6 Kf8 44. Be6 b4 45. Bc4 a5 46. Ke4 Bg1 47. Ke5 Kg7 48. Bd3 c5 49. Kd5 Bf2 50. Kc4 Bg1 51. Kb5 1/2-1/2

[Event "Warsaw Najdorf Memorial op-A"]
[Site "Warsaw"]
[Date "2022.07.15"]
[Round "7"]
[White "Goraj, Barbara"]
[Black "Stachecki, Mikolaj"]
[Result "1-0"]
[ECO "C65"]
[WhiteElo "2035"]
[BlackElo "1918"]
[PlyCount "65"]
[EventDate "2022.07.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. d3 Bc5 5. 0-0 d6 6. c3 0-0 7. Re1 Ne7 8. Bg5 Ng6 9. d4 Bb6 10. Nh4 h6 11. Nxg6 fxg6 12. Bc4+ Kh7 13. Bh4 g5 14. Bg3 exd4 15. cxd4 Nxe4 16. Rxe4 d5 17. Bxd5 Qxd5 18. Nc3 Qf7 19. Qe2 Bf5 20. Re7 Qg6 21. Bxc7 Bxd4 22. Be5 Bd3 23. Rxg7+ Qxg7 24. Qxd3+ Qg6 25. Qxd4 Rad8 26. Qxa7 Rd2 27. Qxb7+ Rf7 28. Qc8 Qf5 29. Qh8+ Kg6 30. Ne4 Rd3 31. Qg8+ Kh5 32. Ng3+ Rxg3 33. Bxg3 1-0

[Event "Warsaw Najdorf Memorial op-A"]
[Site "Warsaw"]
[Date "2022.07.14"]
[Round "6"]
[White "Stachecki, Mikolaj"]
[Black "Kotowicz, Kamil"]
[Result "1/2-1/2"]
[ECO "B13"]
[WhiteElo "1918"]
[BlackElo "1770"]
[PlyCount "81"]
[EventDate "2022.07.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. Bd3 Nc6 5. c3 Nf6 6. h3 e5 7. dxe5 Nxe5 8. Nf3 Nxd3+ 9. Qxd3 Be7 10. 0-0 0-0 11. Be3 a6 12. Nbd2 Be6 13. Rfe1 Re8 14. Rad1 Qc7 15. Nd4 Bd6 16. Re2 Nh5 17. Rde1 Qd7 18. N2f3 Nf4 19. Bxf4 Bxf4 20. g3 Bh6 21. Nf5 f6 22. Nxh6+ gxh6 23. Kh2 Bf7 24. Qd4 Kg7 25. c4 Rxe2 26. Rxe2 Rd8 27. Rd2 Qf5 28. Nh4 Qe5 29. Qg4+ Qg5 30. Qd4 Qe5 31. Ng2 b5 32. c5 a5 33. a3 Qxd4 34. Rxd4 a4 35. Nf4 Rc8 36. Nxd5 Rxc5 37. Nc3 Rc4 38. Rd7 b4 39. axb4 Rxb4 40. Rd2 h5 41. h4 1/2-1/2

[Event "Warsaw Najdorf Memorial op-A"]
[Site "Warsaw"]
[Date "2022.07.13"]
[Round "5"]
[White "Sriram, Jha"]
[Black "Stachecki, Mikolaj"]
[Result "1-0"]
[ECO "D58"]
[WhiteElo "2361"]
[BlackElo "1918"]
[PlyCount "73"]
[EventDate "2022.07.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. Bg5 Be7 5. Nc3 h6 6. Bh4 0-0 7. e3 b6 8. Be2 Bb7 9. 0-0 Nbd7 10. Rc1 dxc4 11. Bxc4 c5 12. Qe2 Ne4 13. Bxe7 Qxe7 14. Ba6 Ndf6 15. Bxb7 Qxb7 16. dxc5 Nxc3 17. Rxc3 Ne4 18. Rc4 Nxc5 19. b4 Nd7 20. Rfc1 Rac8 21. h3 Nf6 22. Nd4 Ne4 23. Nc6 Nc5 24. Nd4 Ne4 25. Qc2 Rxc4 26. Qxc4 Nf6 27. Nc6 Kh8 28. Ne5 Kg8 29. a4 Qb8 30. Qc7 Qa8 31. Nc6 Nd5 32. Qd7 Rc8 33. e4 Rc7 34. Ne7+ Kh7 35. Rxc7 Nxc7 36. Qxc7 Qxe4 37. Qb8 1-0

[Event "Warsaw Najdorf Memorial op-A"]
[Site "Warsaw"]
[Date "2022.07.10"]
[Round "2"]
[White "Stachecki, Mikolaj"]
[Black "Sowul, Bartosz"]
[Result "1/2-1/2"]
[ECO "B56"]
[WhiteElo "1918"]
[BlackElo "2283"]
[PlyCount "117"]
[EventDate "2022.07.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. f3 e5 7. Nb3 Be6 8. Be3 d5 9. exd5 Nxd5 10. Nxd5 Qxd5 11. Qxd5 Bxd5 12. 0-0-0 0-0-0 13. Bb5 a6 14. Bxc6 Bxc6 15. Rxd8+ Kxd8 16. Na5 Kc7 17. Rd1 Bb5 18. c4 Ba4 19. Rd5 f6 20. f4 b6 21. fxe5 bxa5 22. Rxa5 Bc6 23. exf6 gxf6 24. Rxa6 Bd6 25. g3 Re8 26. Kd2 f5 27. a3 h5 28. b4 h4 29. c5 Be5 30. Ra7+ Kb8 31. Rf7 hxg3 32. hxg3 Rd8+ 33. Ke2 Bb5+ 34. Kf2 Rd1 35. Kg2 Rd3 36. Bf4 Bc6+ 37. Kg1 Bxf4 38. gxf4 Rg3+ 39. Kh2 Rg2+ 40. Kh3 Rb2 41. Kh4 Be4 42. Kg5 Rb3 43. Rf8+ Kc7 44. Rf7+ Kc8 45. Ra7 Kb8 46. Ra6 Kc7 47. Kf6 Bd3 48. Ra7+ Kb8 49. Ra5 Kb7 50. Ke5 Kc6 51. Ra8 Rb1 52. Rc8+ Kb7 53. Rh8 Be4 54. Rh6 Ra1 55. Rh7+ Kb8 56. b5 Rxa3 57. Kf6 Rc3 58. Rh8+ Kb7 59. Rh7+ 1/2-1/2

[Event "Warsaw Najdorf Memorial op-A"]
[Site "Warsaw"]
[Date "2022.07.09"]
[Round "1"]
[White "Fiedorek, Michal"]
[Black "Stachecki, Mikolaj"]
[Result "1-0"]
[ECO "A14"]
[WhiteElo "2289"]
[BlackElo "1918"]
[PlyCount "73"]
[EventDate "2022.07.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Be7 5. 0-0 0-0 6. b3 d4 7. e3 c5 8. exd4 cxd4 9. d3 Nc6 10. Re1 Qc7 11. a3 a5 12. Bf4 Bd6 13. Bxd6 Qxd6 14. Nbd2 Nd7 15. Qc2 f5 16. Ng5 Nc5 17. f4 Bd7 18. Rab1 h6 19. Ngf3 Na6 20. Qb2 Rae8 21. Ne5 g5 22. Ndf3 g4 23. Nh4 Kh7 24. Rbc1 Rd8 25. h3 gxh3 26. Bxh3 Nxe5 27. Rxe5 Nc5 28. Qc2 Bc6 29. Rce1 Rf6 30. b4 axb4 31. axb4 Nd7 32. c5 Qf8 33. Rxe6 Qg8 34. Bxf5+ Kh8 35. Ng6+ Rxg6 36. Rxg6 Qd5 37. Qh2 1-0

[Event "POL-ch U18"]
[Site "Sypniewo"]
[Date "2022.03.27"]
[Round "9"]
[White "Stachecki, Mikolaj"]
[Black "Kozlowski, Michal"]
[Result "0-1"]
[ECO "B85"]
[WhiteElo "1837"]
[BlackElo "2078"]
[PlyCount "116"]
[EventDate "2022.03.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 207 Extra"]
[Source "ChessBase"]
[SourceDate "2022.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.05.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 a6 6. Be2 d6 7. 0-0 Nf6 8. Be3 Be7 9. f4 0-0 10. a4 Bd7 11. Nb3 Na5 12. e5 Ne8 13. Nd2 Qc7 14. Nf3 Nc6 15. Kh1 Rd8 16. exd6 Nxd6 17. Bd3 f5 18. Qe2 Bf6 19. Bd2 Rfe8 20. Bc4 Nxc4 21. Qxc4 Qb6 22. Qa2 Nd4 23. Be3 Bc6 24. Nxd4 Bxd4 25. Bxd4 Rxd4 26. Rae1 Rd2 27. Re2 Qd4 28. Qb1 Rxe2 29. Nxe2 Qe4 30. Rf2 Qe3 31. Qf1 Bxa4 32. Nc3 Bc6 33. Re2 Qd4 34. Qe1 Kf7 35. Qh4 h6 36. Qh5+ Kg8 37. Qg6 Qxf4 38. h3 Qf1+ 39. Kh2 Qf4+ 40. Kh1 Qg5 41. Rxe6 Qxg6 42. Rxg6 Re1+ 43. Kh2 Rc1 44. Ne2 Rxc2 45. Nd4 Rc5 46. b4 Kf7 47. Rg3 Rc4 48. Nxc6 Rxc6 49. Rd3 Rb6 50. Rb3 Rb5 51. Rf3 Rxb4 52. Rxf5+ Ke6 53. Rc5 Rb5 54. Rc7 Kf6 55. Kg3 a5 56. Kf4 a4 57. Rc4 Ra5 58. h4 a3 0-1

[Event "POL-ch U18"]
[Site "Sypniewo"]
[Date "2022.03.26"]
[Round "8"]
[White "Bachor, Tomasz"]
[Black "Stachecki, Mikolaj"]
[Result "0-1"]
[ECO "D00"]
[WhiteElo "2041"]
[BlackElo "1837"]
[PlyCount "120"]
[EventDate "2022.03.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 207 Extra"]
[Source "ChessBase"]
[SourceDate "2022.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.05.31"]
[SourceQuality "1"]

1. d4 d5 2. Nc3 Nf6 3. Bf4 Bf5 4. f3 e6 5. g4 Bg6 6. h4 h5 7. g5 Nfd7 8. e3 Bb4 9. Bd3 Bxd3 10. Qxd3 g6 11. e4 c6 12. Nge2 0-0 13. 0-0-0 Re8 14. Rhe1 Nf8 15. Bd2 Nbd7 16. Ng3 Qc7 17. Rg1 Bxc3 18. Bxc3 Nb6 19. e5 c5 20. f4 cxd4 21. Bxd4 Rec8 22. Kb1 Qc4 23. Bxb6 axb6 24. Qxc4 Rxc4 25. Rgf1 Rca4 26. a3 b5 27. Rd3 b4 28. Rff3 Nd7 29. Ne2 Nb6 30. Rd4 Nc4 31. Nc1 R4a7 32. Na2 bxa3 33. b3 Na5 34. c4 Nc6 35. Rdd3 dxc4 36. bxc4 Ra4 37. Rc3 Nd4 38. Rfd3 Nf5 39. Rd7 Rc8 40. c5 Ra5 41. Rxb7 Rcxc5 42. Rcb3 Rc8 43. Rd7 Raa8 44. Ka1 Rd8 45. Rxd8+ Rxd8 46. Rxa3 Nxh4 47. Nc3 Rd4 48. Nb5 Rxf4 49. Ra8+ Kh7 50. Nd6 Nf3 51. Ne8 h4 52. Nf6+ Rxf6 53. exf6 h3 54. Ra7 h2 55. Rxf7+ Kg8 56. Rg7+ Kh8 57. Rxg6 h1Q+ 58. Kb2 Qg2+ 59. Ka3 Nxg5 60. f7 Qf3+ 0-1

[Event "POL-ch U18"]
[Site "Sypniewo"]
[Date "2022.03.25"]
[Round "7"]
[White "Stachecki, Mikolaj"]
[Black "Czechowski, Jakub"]
[Result "1-0"]
[ECO "C55"]
[WhiteElo "1837"]
[BlackElo "2036"]
[PlyCount "69"]
[EventDate "2022.03.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 207 Extra"]
[Source "ChessBase"]
[SourceDate "2022.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.05.31"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Be7 5. 0-0 0-0 6. Re1 d6 7. a4 Na5 8. Ba2 c5 9. c3 Nc6 10. Na3 h6 11. Bd2 Re8 12. h3 Bf8 13. Nc4 Be6 14. b4 cxb4 15. cxb4 a6 16. a5 Nd7 17. Ne3 b6 18. Bd5 Bxd5 19. Nxd5 bxa5 20. bxa5 Nc5 21. Qc2 Rb8 22. Reb1 Rxb1+ 23. Qxb1 Qb8 24. Nb6 Be7 25. Bc3 Bd8 26. Nd2 Re7 27. Ndc4 Rb7 28. Qc2 Nd7 29. Qa4 Bxb6 30. axb6 Nd8 31. Na5 Rxb6 32. Qxd7 Rb1+ 33. Rxb1 Qxb1+ 34. Kh2 Ne6 35. Qxd6 1-0

[Event "POL-ch U18"]
[Site "Sypniewo"]
[Date "2022.03.24"]
[Round "6"]
[White "Haliniak, Wojciech"]
[Black "Stachecki, Mikolaj"]
[Result "0-1"]
[ECO "B23"]
[WhiteElo "1751"]
[BlackElo "1837"]
[PlyCount "86"]
[EventDate "2022.03.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 207 Extra"]
[Source "ChessBase"]
[SourceDate "2022.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.05.31"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. f4 g6 4. Nf3 Bg7 5. Bc4 e6 6. f5 Nge7 7. fxe6 fxe6 8. d3 d5 9. Bb3 b5 10. 0-0 c4 11. dxc4 dxc4 12. Qxd8+ Kxd8 13. Nxb5 cxb3 14. axb3 Bd7 15. Ng5 Rf8 16. Rd1 Kc8 17. Nxh7 Rh8 18. Ng5 Be5 19. Nf3 Bb8 20. Nd6+ Bxd6 21. Rxd6 Kc7 22. Rd3 Rhf8 23. Be3 a6 24. Bc5 Rfd8 25. Ng5 Bc8 26. Rc3 Kb7 27. Ra4 a5 28. Rac4 Kb8 29. Nf7 Rd1+ 30. Kf2 Ba6 31. Bd6+ Kb7 32. Bxe7 Bxc4 33. Nd6+ Ka6 34. Rxc4 Nxe7 35. e5 Rd5 36. b4 Rxe5 37. b5+ Kb6 38. Rf4 Rd5 39. Nc4+ Kxb5 40. Na3+ Kc6 41. g4 g5 42. Rf7 Ng6 43. Rf6 Rf8 0-1

[Event "POL-ch U18"]
[Site "Sypniewo"]
[Date "2022.03.23"]
[Round "5"]
[White "Stachecki, Mikolaj"]
[Black "Zabron, Maksym"]
[Result "0-1"]
[ECO "B85"]
[WhiteElo "1837"]
[BlackElo "1934"]
[PlyCount "74"]
[EventDate "2022.03.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 207 Extra"]
[Source "ChessBase"]
[SourceDate "2022.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.05.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. Be2 a6 7. 0-0 Nf6 8. Be3 Be7 9. f4 d6 10. a4 0-0 11. Kh1 Nxd4 12. Qxd4 e5 13. Qd3 exf4 14. Bxf4 Be6 15. Qg3 Ne8 16. Rad1 Rd8 17. Rd2 Bf6 18. Rf3 Qa5 19. b3 Qb4 20. Nd5 Bxd5 21. exd5 Be5 22. Rd1 Bxf4 23. Rxf4 Qc5 24. Qh4 Nc7 25. Rc4 Qb6 26. Rd3 Rde8 27. Rh3 h6 28. Rg4 f5 29. Rxg7+ Kxg7 30. Qxh6+ Kf7 31. Qh7+ Kf6 32. Qh4+ Ke5 33. Qg3+ Kxd5 34. Bf3+ Ke6 35. Qg7 Rf7 36. Qg6+ Rf6 37. Qg7 Qf2 0-1

[Event "POL-ch U18"]
[Site "Sypniewo"]
[Date "2022.03.22"]
[Round "4"]
[White "Gorkiewicz, Mateusz"]
[Black "Stachecki, Mikolaj"]
[Result "1-0"]
[ECO "B62"]
[WhiteElo "2073"]
[BlackElo "1837"]
[PlyCount "85"]
[EventDate "2022.03.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 207 Extra"]
[Source "ChessBase"]
[SourceDate "2022.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.05.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Bb5 Bd7 8. Bxc6 bxc6 9. Qf3 e5 10. Nf5 Bxf5 11. Qxf5 Qd7 12. Qf3 Be7 13. 0-0-0 0-0 14. Rd3 Rfd8 15. Rhd1 Qe6 16. Kb1 Ne8 17. Bxe7 Qxe7 18. R1d2 Rd7 19. Qd1 Rad8 20. a3 Nc7 21. Qh5 d5 22. Rh3 h6 23. Rg3 Kh8 24. Rdd3 d4 25. Ne2 c5 26. Rg4 Ne8 27. Rh4 c4 28. Rdh3 Nf6 29. Qg5 Nh7 30. Qc1 d3 31. Nc3 Ng5 32. Re3 Rb8 33. cxd3 cxd3 34. Ka1 Ne6 35. Rhh3 Nd4 36. Ka2 Nb3 37. Qd1 d2 38. Nd5 Nc1+ 39. Kb1 Rxb2+ 40. Kxb2 Rb7+ 41. Rb3 Rxb3+ 42. Rxb3 Nxb3 43. Nxe7 1-0

[Event "POL-ch U18"]
[Site "Sypniewo"]
[Date "2022.03.21"]
[Round "3"]
[White "Stachecki, Mikolaj"]
[Black "Jedrusik, Adam"]
[Result "1-0"]
[ECO "B07"]
[WhiteElo "1837"]
[BlackElo "1937"]
[PlyCount "83"]
[EventDate "2022.03.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 207 Extra"]
[Source "ChessBase"]
[SourceDate "2022.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.05.31"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Be3 c6 5. f4 Bg7 6. Nf3 0-0 7. h3 b5 8. Bd3 b4 9. Ne2 Qc7 10. c3 a5 11. Rc1 Nbd7 12. 0-0 Bb7 13. c4 e5 14. fxe5 dxe5 15. d5 Ne8 16. g4 c5 17. Ng3 Nd6 18. Qc2 Rae8 19. g5 Bc8 20. Qf2 Nb7 21. Qg2 f5 22. gxf6 Nxf6 23. Rf2 Bd7 24. Kh1 Qc8 25. Ng1 Rf7 26. Rcf1 Ref8 27. Bg5 Nd6 28. Be3 Kh8 29. Bg5 h6 30. Bxf6 Rxf6 31. Rxf6 Rxf6 32. Rxf6 Bxf6 33. Kh2 Bg5 34. Qf2 h5 35. N3e2 Kg7 36. Nf3 Qf8 37. Qg3 h4 38. Qxe5+ Kg8 39. Nxg5 Qf2+ 40. Kh1 Bxh3 41. Qh2 Qe1+ 42. Ng1 1-0

[Event "POL-ch U18"]
[Site "Sypniewo"]
[Date "2022.03.20"]
[Round "2"]
[White "Dalkowski, Rafal"]
[Black "Stachecki, Mikolaj"]
[Result "1-0"]
[ECO "D35"]
[WhiteElo "2138"]
[BlackElo "1837"]
[PlyCount "87"]
[EventDate "2022.03.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 207 Extra"]
[Source "ChessBase"]
[SourceDate "2022.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.05.31"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. c4 e6 4. cxd5 exd5 5. Nc3 Be7 6. Bf4 c6 7. Qc2 0-0 8. e3 b6 9. Bd3 Ba6 10. 0-0 Bxd3 11. Qxd3 Nbd7 12. Rfe1 Nh5 13. Be5 f6 14. Bg3 Nxg3 15. hxg3 f5 16. Rec1 Qb8 17. Rc2 Qb7 18. Rac1 Rac8 19. a3 a5 20. Ne2 g5 21. Qb3 Kg7 22. Qa4 g4 23. Ne1 Qa6 24. Nf4 b5 25. Qb3 Kh8 26. Ned3 Bd6 27. Rc3 Qb7 28. Qc2 Nb8 29. Nxd5 b4 30. axb4 axb4 31. Rc4 b3 32. Qc3 Rce8 33. N5f4 Kg8 34. Nc5 Bxc5 35. Rxc5 Qf7 36. Rc4 Re7 37. Qxb3 Rb7 38. Qc3 Rd8 39. Rc5 h6 40. Qc2 Rf8 41. Rb1 Kh7 42. b4 Na6 43. Rxc6 Nc7 44. Qc5 1-0

[Event "POL-ch U18"]
[Site "Sypniewo"]
[Date "2022.03.19"]
[Round "1"]
[White "Stachecki, Mikolaj"]
[Black "Luberanski, Jakub"]
[Result "1/2-1/2"]
[ECO "B33"]
[WhiteElo "1837"]
[BlackElo "2211"]
[PlyCount "169"]
[EventDate "2022.03.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 207 Extra"]
[Source "ChessBase"]
[SourceDate "2022.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.05.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Qb6 5. Nb3 Nf6 6. Nc3 e6 7. Be3 Qc7 8. a3 a6 9. Be2 b5 10. 0-0 Bb7 11. Nc5 Bc8 12. f4 d6 13. Nb3 Bb7 14. Bf3 Be7 15. g4 h6 16. Bg2 Nd7 17. Qe2 0-0-0 18. a4 b4 19. Na2 Nc5 20. Qf2 g5 21. Nxc5 dxc5 22. Bxc5 Bxc5 23. Qxc5 gxf4 24. Nxb4 Nxb4 25. Qxb4 Rhg8 26. Bf3 a5 27. Qb5 Rg5 28. e5 Rdg8 29. h3 Kb8 30. Bxb7 Qxb7 31. Rxf4 Qxb5 32. axb5 Rxe5 33. Rxa5 Rd8 34. Rf2 Rd1+ 35. Kg2 f5 36. gxf5 exf5 37. Ra6 Rxb5 38. b3 h5 39. Rh6 f4 40. Rxf4 Rg5+ 41. Kf3 Rf1+ 42. Ke4 Re1+ 43. Kd4 Re7 44. Rf8+ Kb7 45. Rfh8 Rd7+ 46. Ke4 Re7+ 47. Kf4 Rge5 48. Rf8 Re2 49. Rf5 Rxc2 50. Rhxh5 Rc3 51. Rb5+ Kc6 52. Rb4 Rf7+ 53. Kg4 Rg7+ 54. Kh4 Kd6 55. Rg4 Rxg4+ 56. hxg4 Rxb3 57. Rf5 Ke6 58. Kg5 Rb8 59. Rf6+ Ke7 60. Rf4 Ke6 61. Rf6+ Ke5 62. Rf7 Rg8+ 63. Kh5 Rh8+ 64. Kg6 Rg8+ 65. Kh5 Rh8+ 66. Kg5 Rg8+ 67. Kh4 Rh8+ 68. Kg3 Rg8 69. Rf5+ Ke6 70. Kf4 Rg7 71. Rf8 Ke7 72. Rb8 Rg6 73. Kf5 Ra6 74. g5 Kf7 75. g6+ Kg7 76. Rb7+ Kg8 77. Kg5 Ra1 78. Rb5 Rg1+ 79. Kf6 Rf1+ 80. Rf5 Rxf5+ 81. Kxf5 Kg7 82. Kg5 Kg8 83. Kf6 Kf8 84. g7+ Kg8 85. Kg6 1/2-1/2

[Event "POL-ch U17 Qual"]
[Site "Jastrzebia Gora"]
[Date "2021.11.21"]
[Round "9"]
[White "Stachecki, Mikolaj"]
[Black "Zielinski, Sebastian"]
[Result "1-0"]
[ECO "C50"]
[WhiteElo "1899"]
[BlackElo "1579"]
[PlyCount "83"]
[EventDate "2021.11.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. 0-0 Nf6 5. d3 0-0 6. a4 h6 7. c3 d5 8. exd5 Nxd5 9. b4 Be7 10. b5 Na5 11. Nxe5 Bf6 12. Ng4 Bxg4 13. Qxg4 Nxc3 14. Nxc3 Bxc3 15. Ra3 Be5 16. Ra2 Qd6 17. Ba3 c5 18. bxc6 Qxc6 19. Bxf8 Rxf8 20. Re2 Qc7 21. h3 Nc6 22. Rfe1 Bf6 23. Re8 Ne5 24. Rxf8+ Kxf8 25. Qe4 g6 26. Bb5 a6 27. d4 Nc6 28. Bxc6 bxc6 29. Rc1 Qa7 30. Rxc6 Bxd4 31. Rc8+ Kg7 32. Qe8 Bxf2+ 33. Kh1 Kf6 34. Rc6+ Kg5 35. Qe5+ f5 36. Qf6+ Kf4 37. Rc4+ Ke3 38. Qc3+ Ke2 39. Qc2+ Ke1 40. Qc1+ Ke2 41. Rc2+ Kd3 42. Qd2+ 1-0

[Event "POL-ch U17 Qual"]
[Site "Jastrzebia Gora"]
[Date "2021.11.20"]
[Round "8"]
[White "Haliniak, Wojciech"]
[Black "Stachecki, Mikolaj"]
[Result "1-0"]
[ECO "B55"]
[WhiteElo "1827"]
[BlackElo "1899"]
[PlyCount "61"]
[EventDate "2021.11.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. f3 e5 6. Nb3 Be7 7. c4 a5 8. Be3 a4 9. N3d2 Qa5 10. Bd3 0-0 11. Nc3 Bd8 12. Ke2 Nc6 13. Re1 a3 14. Nb3 Qb4 15. Nd5 Nxd5 16. cxd5 axb2 17. Rb1 Nd4+ 18. Bxd4 exd4 19. Rxb2 Bg5 20. Qb1 b5 21. Nd2 Qa3 22. Bxb5 Bxd2 23. Rxd2 Rb8 24. Qd3 Qa7 25. a4 f5 26. Qxd4 Qe7 27. Kf1 Qh4 28. e5 Qxh2 29. e6 f4 30. e7 Qh1+ 31. Qg1 1-0

[Event "POL-ch U17 Qual"]
[Site "Jastrzebia Gora"]
[Date "2021.11.19"]
[Round "7"]
[White "Stachecki, Mikolaj"]
[Black "Lenart, Jakub"]
[Result "1-0"]
[ECO "B49"]
[WhiteElo "1899"]
[BlackElo "1660"]
[PlyCount "107"]
[EventDate "2021.11.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e6 5. Nc3 Qc7 6. Be2 a6 7. 0-0 Nf6 8. Be3 Bb4 9. Na4 0-0 10. Nxc6 bxc6 11. Nb6 Rb8 12. Nxc8 Rfxc8 13. Bxa6 Rf8 14. Bd3 Bd6 15. g3 Be5 16. a4 Bxb2 17. Ra2 d6 18. a5 Nd7 19. Qd2 Bf6 20. a6 c5 21. Rd1 Ne5 22. Be2 Rfd8 23. Bg5 Bxg5 24. Qxg5 Ra8 25. Rb1 Rdb8 26. Qc1 c4 27. Rab2 Rxb2 28. Qxb2 Kf8 29. Qa3 Ra7 30. Rb5 Ke8 31. Qb2 c3 32. Qa3 Nd7 33. Rb3 Nc5 34. Rxc3 Qb6 35. Qa1 Kf8 36. Re3 Qb4 37. e5 d5 38. Ra3 Ne4 39. Bd3 Nc5 40. Bf1 Ne4 41. Bg2 Nc5 42. Ra2 Qb6 43. Bf1 Ne4 44. c4 dxc4 45. Bxc4 Nc5 46. Rb2 Qc7 47. Qa3 Ke8 48. Bb5+ Nd7 49. Rd2 Qxe5 50. Bxd7+ Rxd7 51. Rxd7 Kxd7 52. a7 Qe1+ 53. Kg2 Qe4+ 54. Qf3 1-0

[Event "POL-ch U17 Qual"]
[Site "Jastrzebia Gora"]
[Date "2021.11.18"]
[Round "5"]
[White "Stachecki, Mikolaj"]
[Black "Ullrich, Karol"]
[Result "0-1"]
[ECO "B13"]
[WhiteElo "1899"]
[BlackElo "1605"]
[PlyCount "76"]
[EventDate "2021.11.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. Bd3 Nf6 5. c3 Bg4 6. Qb3 Qc8 7. Bf4 Nc6 8. Nd2 e6 9. Ngf3 Be7 10. 0-0 0-0 11. Ne5 Nxe5 12. Bxe5 a6 13. a4 Qc6 14. h3 Bh5 15. f4 Ne4 16. Bxe4 dxe4 17. f5 e3 18. g4 exd2 19. Bf4 Bxg4 20. hxg4 exf5 21. gxf5 Qe4 22. Rad1 Qxf5 23. Qxb7 Bg5 24. Bxd2 Qg6 25. Bxg5 Qxg5+ 26. Qg2 Qa5 27. Qc2 Qg5+ 28. Qg2 Qa5 29. Qc2 Rac8 30. Rf5 Qd8 31. Qf2 Rc6 32. Rd3 Qd7 33. Rdf3 Rg6+ 34. Kh1 Qxa4 35. Qe1 Re8 36. Re5 Rxe5 37. dxe5 Qg4 38. Rf2 Qh3+ 0-1

[Event "POL-ch U17 Qual"]
[Site "Jastrzebia Gora"]
[Date "2021.11.18"]
[Round "6"]
[White "Wojciechowski, Franciszek"]
[Black "Stachecki, Mikolaj"]
[Result "0-1"]
[ECO "D00"]
[WhiteElo "1716"]
[BlackElo "1899"]
[PlyCount "60"]
[EventDate "2021.11.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 d5 2. Bf4 Nf6 3. e3 c5 4. c3 Qb6 5. Qc2 Nc6 6. Nd2 g6 7. h3 Bf5 8. Qc1 Bg7 9. Ngf3 Rc8 10. Nb3 Ne4 11. Be2 a5 12. dxc5 Nxc5 13. Nbd4 Nxd4 14. exd4 Na4 15. Nh4 Be4 16. f3 Bxd4 17. fxe4 Bf2+ 18. Kf1 Bxh4 19. g3 Bf6 20. e5 Bg7 21. Be3 Qc6 22. Bd4 0-0 23. Kg2 Nc5 24. Qe3 Nd7 25. Bg4 e6 26. Rae1 b5 27. h4 b4 28. h5 bxc3 29. Bxc3 d4+ 30. Bf3 dxe3 0-1

[Event "POL-ch U17 Qual"]
[Site "Jastrzebia Gora"]
[Date "2021.11.17"]
[Round "4"]
[White "Labedz, Dawid"]
[Black "Stachecki, Mikolaj"]
[Result "1/2-1/2"]
[ECO "B89"]
[WhiteElo "1542"]
[BlackElo "1899"]
[PlyCount "38"]
[EventDate "2021.11.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bc4 e6 7. Be3 Be7 8. Qe2 a6 9. 0-0-0 Nxd4 10. Bxd4 b5 11. Bb3 Bb7 12. f3 0-0 13. Kb1 b4 14. Na4 Nd7 15. Qe1 Rb8 16. Ba7 Ra8 17. Bd4 Rb8 18. Ba7 Ra8 19. Bd4 Rb8 1/2-1/2

[Event "POL-ch U17 Qual"]
[Site "Jastrzebia Gora"]
[Date "2021.11.16"]
[Round "2"]
[White "Pieczulis, Blazej"]
[Black "Stachecki, Mikolaj"]
[Result "1/2-1/2"]
[ECO "B51"]
[WhiteElo "1726"]
[BlackElo "1899"]
[PlyCount "82"]
[EventDate "2021.11.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Nd7 4. 0-0 Ngf6 5. Qe2 e5 6. c4 Be7 7. Nc3 0-0 8. Bxd7 Bxd7 9. d3 h6 10. h3 a6 11. Nh2 b5 12. b3 b4 13. Nd1 a5 14. f4 Nh7 15. f5 a4 16. Rb1 axb3 17. axb3 Ra7 18. Ne3 Bg5 19. Nd5 Bxc1 20. Rbxc1 Nf6 21. Nxf6+ Qxf6 22. Ng4 Qg5 23. Kh2 Rfa8 24. g3 h5 25. Nf2 Ra2 26. Rc2 Rxc2 27. Qxc2 Ra3 28. Nd1 Bc6 29. h4 Qd8 30. Nb2 Qa8 31. Rb1 Ra2 32. Kg1 Qa3 33. Kf1 g6 34. fxg6 fxg6 35. Ke1 Ra1 36. Rxa1 Qxa1+ 37. Nd1 Bd7 38. Qb2 Qa8 39. Ne3 Be6 40. Nd1 Kg7 41. Ne3 Kg8 1/2-1/2

[Event "POL-ch U17 Qual"]
[Site "Jastrzebia Gora"]
[Date "2021.11.16"]
[Round "3"]
[White "Stachecki, Mikolaj"]
[Black "Owoc, Jakub"]
[Result "1/2-1/2"]
[ECO "B13"]
[WhiteElo "1899"]
[BlackElo "1751"]
[PlyCount "60"]
[EventDate "2021.11.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. Bd3 Nc6 5. c3 g6 6. h3 Bg7 7. Nf3 Qc7 8. 0-0 Nf6 9. Re1 0-0 10. Nbd2 Re8 11. Ne5 Nxe5 12. dxe5 Nd7 13. f4 Nc5 14. Bc2 b6 15. Nb3 Nxb3 16. axb3 e6 17. Be3 Bb7 18. Qd4 Rec8 19. Ra2 Qc5 20. Rea1 a6 21. Qxc5 bxc5 22. Bd3 Rc6 23. Ra5 Bf8 24. Be2 Be7 25. Kf2 Bc8 26. Rb5 Kg7 27. Raa5 axb5 28. Rxa8 b4 29. c4 d4 30. Bd2 Rc7 1/2-1/2

[Event "POL-ch U17 Qual"]
[Site "Jastrzebia Gora"]
[Date "2021.11.15"]
[Round "1"]
[White "Stachecki, Mikolaj"]
[Black "Werner, Kacper"]
[Result "1-0"]
[ECO "B85"]
[WhiteElo "1899"]
[BlackElo "1589"]
[PlyCount "69"]
[EventDate "2021.11.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e6 7. Be2 Be7 8. 0-0 0-0 9. a4 Nc6 10. f4 Qc7 11. Kh1 Rb8 12. Bf3 Nxd4 13. Qxd4 b6 14. Qd3 Rd8 15. Rad1 Bb7 16. f5 d5 17. exd5 Nxd5 18. fxe6 fxe6 19. Nxd5 Bxd5 20. Bxd5 exd5 21. Bf4 Qc4 22. Bxb8 Rxb8 23. Qxd5+ Qxd5 24. Rxd5 Rc8 25. c3 Rc4 26. Rd4 Rc7 27. g3 h6 28. Kg2 Bc5 29. Rd8+ Kh7 30. b4 Be7 31. Rd3 Kg6 32. Re1 Kf7 33. a5 bxa5 34. bxa5 Rc5 35. Rd7 1-0

[Event "Rubinstein Memorial op-A 57th"]
[Site "Polanica Zdroj"]
[Date "2021.08.22"]
[Round "9"]
[White "Stachecki, Mikolaj"]
[Black "Rog, Bartlomiej"]
[Result "1/2-1/2"]
[ECO "B06"]
[WhiteElo "1841"]
[BlackElo "1981"]
[PlyCount "42"]
[EventDate "2021.08.14"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nc3 d6 4. Be3 a6 5. Qd2 b5 6. 0-0-0 Nd7 7. f3 Nb6 8. g4 Nf6 9. Bh6 Bxh6 10. Qxh6 c6 11. e5 Nfd5 12. Qg7 Rf8 13. Ne4 Be6 14. Ng5 Kd7 15. Nxe6 fxe6 16. exd6 Qe8 17. Qxh7 Rh8 18. Qg7 Rg8 19. Qh7 Rh8 20. Qg7 Rg8 21. Qh7 Rh8 1/2-1/2

[Event "Rubinstein Memorial op-A 57th"]
[Site "Polanica Zdroj"]
[Date "2021.08.21"]
[Round "8"]
[White "Hetzer, Volkhard"]
[Black "Stachecki, Mikolaj"]
[Result "1/2-1/2"]
[ECO "D05"]
[WhiteElo "1925"]
[BlackElo "1841"]
[PlyCount "53"]
[EventDate "2021.08.14"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 e6 3. e3 Nf6 4. Bd3 Be7 5. Nbd2 Nbd7 6. 0-0 0-0 7. Qe2 c5 8. c3 b6 9. e4 dxe4 10. Nxe4 Bb7 11. Rd1 Qc7 12. Bg5 Nd5 13. Bxe7 Nxe7 14. Rac1 Nd5 15. Bb1 N7f6 16. Nxf6+ Nxf6 17. Ne5 Rfd8 18. dxc5 Qxc5 19. Rxd8+ Rxd8 20. Rd1 Rd5 21. Rxd5 Qxd5 22. f3 Kf8 23. Kf2 Ke7 24. b3 h6 25. Qe3 Qd1 26. Qd3 Qxd3 27. Bxd3 1/2-1/2

[Event "Rubinstein Memorial op-A 57th"]
[Site "Polanica Zdroj"]
[Date "2021.08.20"]
[Round "7"]
[White "Stachecki, Mikolaj"]
[Black "Bugalski, Michal"]
[Result "1/2-1/2"]
[ECO "C04"]
[WhiteElo "1841"]
[BlackElo "2225"]
[PlyCount "89"]
[EventDate "2021.08.14"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 Nc6 4. c3 e5 5. dxe5 Nxe5 6. Ngf3 Bg4 7. Be2 Ng6 8. exd5 Qxd5 9. Qb3 0-0-0 10. Qxd5 Rxd5 11. h3 Bf5 12. Nb3 Kb8 13. Be3 Bc8 14. 0-0 Nf6 15. Rfe1 Rd7 16. Rad1 b6 17. Bb5 Rxd1 18. Rxd1 Bd6 19. Nbd4 a6 20. Bc4 Rf8 21. Bb3 Bd7 22. Ng5 Nh8 23. Bc2 h6 24. Ne4 Nxe4 25. Bxe4 f5 26. Bf3 f4 27. Bd2 Ng6 28. Re1 Ne5 29. Be4 g5 30. Nf3 Nf7 31. Bd5 c6 32. Be6 Kc7 33. c4 Nd8 34. Bxd7 Kxd7 35. Bc3 Nf7 36. Bf6 Rg8 37. Ne5+ Nxe5 38. Bxe5 Re8 39. Bc3 Rxe1+ 40. Bxe1 Ke6 41. Kf1 h5 42. Ke2 g4 43. hxg4 hxg4 44. Kd3 Kf5 45. f3 1/2-1/2

[Event "Rubinstein Memorial op-A 57th"]
[Site "Polanica Zdroj"]
[Date "2021.08.19"]
[Round "6"]
[White "Bojczewski, Mateusz"]
[Black "Stachecki, Mikolaj"]
[Result "0-1"]
[ECO "B56"]
[WhiteElo "1922"]
[BlackElo "1841"]
[PlyCount "168"]
[EventDate "2021.08.14"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. f3 e5 7. Nb3 Be7 8. Be3 0-0 9. Qd2 a5 10. Bb5 Be6 11. 0-0-0 Qb8 12. Kb1 Rc8 13. Bb6 Nd7 14. Be3 Nf6 15. Nd5 Bxd5 16. exd5 a4 17. Nc1 a3 18. b3 Nd4 19. Bxd4 exd4 20. Qxd4 Rc5 21. c4 Nxd5 22. cxd5 Rxb5 23. Nd3 Rxb3+ 24. axb3 a2+ 25. Kc2 Bf6 26. Qc4 a1Q 27. Rxa1 Bxa1 28. Nb4 Qd8 29. Kd3 Rc8 30. Nc6 bxc6 31. Rxa1 c5 32. Ra7 Qg5 33. Qg4 Qxd5+ 34. Kc2 Re8 35. Re7 Rb8 36. Qc4 Qf5+ 37. Qe4 Qxe4+ 38. fxe4 Rd8 39. e5 Kf8 40. exd6 Rxd6 41. Re5 Re6 42. Rh5 Re2+ 43. Kd3 Rxg2 44. Rxh7 f5 45. Rh5 g6 46. Rh7 g5 47. Ke3 Rb2 48. Rh5 Rxb3+ 49. Ke2 Rb2+ 50. Ke3 Rg2 51. h4 Kg7 52. hxg5 Kg6 53. Rh6+ Kxg5 54. Rc6 Rc2 55. Kd3 Rc1 56. Kd2 Rc4 57. Kd3 Rd4+ 58. Ke3 f4+ 59. Kf3 Rc4 60. Rc8 Kf5 61. Rf8+ Ke5 62. Re8+ Kd5 63. Rd8+ Kc6 64. Rf8 Kb5 65. Rb8+ Kc6 66. Rf8 Kd5 67. Rd8+ Ke5 68. Re8+ Kd4 69. Kxf4 Kc3+ 70. Ke3 Rd4 71. Rc8 c4 72. Rc7 Rd6 73. Ke2 Kb3 74. Rb7+ Kc2 75. Rb8 Re6+ 76. Kf3 c3 77. Rb7 Kc1 78. Rb3 c2 79. Rb5 Re7 80. Kf2 Re4 81. Kf3 Ra4 82. Ke2 Ra2 83. Rb4 Rb2 84. Rc4 Kb1 0-1

[Event "Rubinstein Memorial op-A 57th"]
[Site "Polanica Zdroj"]
[Date "2021.08.18"]
[Round "5"]
[White "Stachecki, Mikolaj"]
[Black "Paprocki, Antoni"]
[Result "0-1"]
[ECO "B19"]
[WhiteElo "1841"]
[BlackElo "1982"]
[PlyCount "102"]
[EventDate "2021.08.14"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. h4 h6 7. Nf3 e6 8. h5 Bh7 9. Bd3 Bxd3 10. Qxd3 Nf6 11. Bf4 Bd6 12. Bxd6 Qxd6 13. 0-0-0 Nbd7 14. Kb1 0-0 15. Ne4 Nxe4 16. Qxe4 Qd5 17. Qe3 Nf6 18. Ne5 Rfd8 19. f3 c5 20. Qf4 cxd4 21. g4 Rac8 22. g5 hxg5 23. Qxg5 Nd7 24. f4 Nxe5 25. fxe5 Qe4 26. Rdg1 Qxc2+ 27. Ka1 Qh7 28. h6 g6 29. Rc1 d3 30. Rxc8 Rxc8 31. b4 Rf8 32. Rd1 f6 33. exf6 Qf7 34. Rf1 Kh7 35. Qc5 Rd8 36. Qc3 Rd6 37. Rd1 e5 38. Qxe5 Qxf6 39. Qxf6 Rxf6 40. Rxd3 Kxh6 41. Kb2 g5 42. Kc3 g4 43. Rg3 Rf3+ 44. Rxf3 gxf3 45. Kd3 Kg5 46. Ke3 Kg4 47. Kf2 b5 48. Kf1 Kg3 49. Kg1 f2+ 50. Kf1 Kf3 51. a3 Ke3 0-1

[Event "Rubinstein Memorial op-A 57th"]
[Site "Polanica Zdroj"]
[Date "2021.08.17"]
[Round "4"]
[White "Vanduyfhuys, Daria"]
[Black "Stachecki, Mikolaj"]
[Result "1-0"]
[ECO "D41"]
[WhiteElo "2101"]
[BlackElo "1841"]
[PlyCount "77"]
[EventDate "2021.08.14"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. Nc3 c5 5. cxd5 Nxd5 6. e4 Nxc3 7. bxc3 cxd4 8. cxd4 Bb4+ 9. Bd2 Bxd2+ 10. Qxd2 0-0 11. Bc4 Nd7 12. 0-0 b6 13. e5 Bb7 14. Qf4 Rc8 15. Bd3 h6 16. Rac1 Rxc1 17. Rxc1 a6 18. Nd2 Nc5 19. Be2 Qd5 20. Bf3 Nd3 21. Qe3 Qb5 22. Rb1 Qd7 23. Qxd3 Rc8 24. Bxb7 Qxb7 25. h3 Qc6 26. Ne4 Rc7 27. a3 Kh8 28. Nd6 b5 29. Rd1 Qd5 30. Qe4 Qa2 31. Qf3 Kg8 32. Qg3 Qe2 33. Rf1 Rc2 34. Ne8 g6 35. Qf4 Kf8 36. Nd6 Ke7 37. Qxf7+ Kd8 38. Nb7+ Kc8 39. Nc5 1-0

[Event "Rubinstein Memorial op-A 57th"]
[Site "Polanica Zdroj"]
[Date "2021.08.16"]
[Round "3"]
[White "Stachecki, Mikolaj"]
[Black "Giacomini, Hector"]
[Result "0-1"]
[ECO "B19"]
[WhiteElo "1841"]
[BlackElo "2104"]
[PlyCount "80"]
[EventDate "2021.08.14"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. h4 h6 7. Nf3 Nd7 8. h5 Bh7 9. Bd3 Bxd3 10. Qxd3 Ngf6 11. Bf4 e6 12. 0-0-0 Be7 13. Kb1 0-0 14. Ne5 c5 15. Ne4 cxd4 16. Qxd4 Nb6 17. Qe3 Nbd5 18. Nxf6+ Bxf6 19. Qg3 Qb6 20. Nc4 Qb4 21. Be5 Qxc4 22. Rxd5 Bxe5 23. Rxe5 Rfd8 24. Qe3 Qg4 25. g3 Rd1+ 26. Rxd1 Qxd1+ 27. Qc1 Rd8 28. b3 Qf3 29. Qe3 Qh1+ 30. Kb2 Rd1 31. Qxa7 Rb1+ 32. Kc3 Qc1 33. Qe3 Qb2+ 34. Kd2 Qxa2 35. Qd3 Qa1 36. Qd8+ Kh7 37. Qd3+ f5 38. Qb5 Rd1+ 39. Ke3 Re1+ 40. Kf4 Qd4+ 0-1

[Event "Rubinstein Memorial op-A 57th"]
[Site "Polanica Zdroj"]
[Date "2021.08.15"]
[Round "2"]
[White "Marczuk, Dominik"]
[Black "Stachecki, Mikolaj"]
[Result "1-0"]
[ECO "D00"]
[WhiteElo "2292"]
[BlackElo "1841"]
[PlyCount "43"]
[EventDate "2021.08.14"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]

1. d4 d5 2. Nc3 Nf6 3. Bf4 g6 4. Qd2 Bg7 5. 0-0-0 c6 6. f3 b5 7. Bh6 0-0 8. h4 a5 9. h5 a4 10. Bxg7 Kxg7 11. g4 b4 12. Nb1 b3 13. cxb3 axb3 14. a3 Qd6 15. hxg6 fxg6 16. Qh6+ Kf7 17. Nh3 c5 18. e3 cxd4 19. exd4 Qc6+ 20. Nc3 Rxa3 21. Ng5+ Ke8 22. Bb5 1-0

[Event "Rubinstein Memorial op-A 57th"]
[Site "Polanica Zdroj"]
[Date "2021.08.14"]
[Round "1"]
[White "Stachecki, Mikolaj"]
[Black "Szyszylo, Rafal"]
[Result "1-0"]
[ECO "B06"]
[WhiteElo "1841"]
[BlackElo "2179"]
[PlyCount "115"]
[EventDate "2021.08.14"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nc3 d6 4. Be3 a6 5. Qd2 b5 6. f3 Bb7 7. g4 Nd7 8. h4 h5 9. g5 e6 10. d5 Ne7 11. dxe6 fxe6 12. Bh3 e5 13. Be6 Nf8 14. Bb3 Qd7 15. 0-0-0 Ne6 16. Nd5 Nxd5 17. Bxd5 Bxd5 18. Qxd5 0-0 19. Ne2 Kh7 20. Rhf1 Rad8 21. Qd2 Qf7 22. Kb1 c5 23. Qd5 Nd4 24. Qxf7 Rxf7 25. Bxd4 exd4 26. c3 Rdf8 27. f4 Be5 28. cxd4 cxd4 29. Rd3 Kg8 30. Rdf3 Kg7 31. f5 Rc7 32. Rd3 Re8 33. Nxd4 Bxd4 34. Rxd4 Rc4 35. Rxc4 bxc4 36. f6+ Kf7 37. Re1 d5 38. Kc2 d4 39. e5 Ke6 40. b3 c3 41. Kd3 Rd8 42. b4 Rb8 43. Kxd4 c2 44. Kc3 a5 45. Kxc2 Rxb4 46. Rf1 Rb8 47. f7 Rf8 48. Rf6+ Kxe5 49. Kb3 Kd5 50. Ka4 Kc5 51. Kxa5 Ra8+ 52. Ra6 Rf8 53. Ra7 Kd5 54. Kb6 Ke6 55. a4 Kf5 56. Kc6 Ke6 57. a5 Rc8+ 58. Rc7 1-0

[Event "Warsaw Maciei Memorial"]
[Site "Warsaw"]
[Date "2021.07.09"]
[Round "1"]
[White "Stachecki, Mikolaj"]
[Black "Kowalski, Igor"]
[Result "0-1"]
[ECO "B06"]
[WhiteElo "1814"]
[BlackElo "2349"]
[PlyCount "50"]
[EventDate "2021.07.09"]
[EventType "swiss (blitz)"]
[EventRounds "11"]
[EventCountry "POL"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Be3 d6 4. Nc3 a6 5. Qd2 Nd7 6. 0-0-0 b5 7. h4 h5 8. f3 Bb7 9. Be2 Nb6 10. Nh3 b4 11. Nb1 a5 12. Nf2 Qd7 13. g4 hxg4 14. fxg4 Nf6 15. Qd3 a4 16. h5 gxh5 17. gxh5 b3 18. cxb3 axb3 19. a3 Ba6 20. Qd2 Na4 21. h6 Bf8 22. Bxa6 Rxa6 23. Nc3 Nxc3 24. bxc3 Rxa3 25. Qb2 Qa4 0-1

[Event "Poronin Tatra Limba op"]
[Site "Poronin"]
[Date "2021.05.28"]
[Round "9"]
[White "Stachecki, Mikolaj"]
[Black "Budzisz, Adrian"]
[Result "1-0"]
[ECO "B85"]
[WhiteElo "1724"]
[BlackElo "1879"]
[PlyCount "63"]
[EventDate "2021.05.22"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 a6 7. 0-0 Be7 8. f4 Qc7 9. a4 0-0 10. Be3 b6 11. Bf3 Bb7 12. g4 Rd8 13. g5 Ne8 14. Bg2 e5 15. Nf5 Bf8 16. Qh5 g6 17. Nh6+ Bxh6 18. Qxh6 exf4 19. Rxf4 Nd7 20. Rxf7 Kxf7 21. Qxh7+ Kf8 22. Rf1+ Ndf6 23. Qh8+ Ke7 24. Bh3 Rd7 25. gxf6+ Kd8 26. Bxd7 Qxd7 27. Bxb6+ Kc8 28. f7 Qg4+ 29. Kf2 Kd7 30. f8Q Kc6 31. Qf3 Qe6 32. Qd4 1-0

[Event "Poronin Tatra Limba op"]
[Site "Poronin"]
[Date "2021.05.26"]
[Round "7"]
[White "Stachecki, Mikolaj"]
[Black "Galant, Ireneusz"]
[Result "1-0"]
[ECO "B32"]
[WhiteElo "1724"]
[BlackElo "1827"]
[PlyCount "114"]
[EventDate "2021.05.22"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e5 5. Nb5 d6 6. c4 Be7 7. Be2 f5 8. N1c3 a6 9. Na3 Nf6 10. exf5 Bxf5 11. Be3 0-0 12. 0-0 Kh8 13. Qd2 Rc8 14. h3 Nb4 15. f4 exf4 16. Rxf4 Be6 17. Bf3 d5 18. cxd5 Bg8 19. Rd1 Bd6 20. Rc4 Qe7 21. Re1 Rce8 22. Bf2 Qd8 23. Rxe8 Rxe8 24. Nc2 Nxc2 25. Qxc2 Bb8 26. Ne4 Nd7 27. Rd4 Ba7 28. Rd1 Bxf2+ 29. Qxf2 Ne5 30. Nc3 b5 31. a3 Rf8 32. Qe3 Nc4 33. Qf2 Qf6 34. Qd4 Qg6 35. Be4 Qh5 36. b3 Nd6 37. Bf3 Qg5 38. Ne4 Qg6 39. Nxd6 Rxf3 40. Qe4 Qxe4 41. Nxe4 Re3 42. d6 Be6 43. Nc5 Bf5 44. d7 Bxd7 45. Rxd7 Kg8 46. Rd3 Re1+ 47. Kf2 Ra1 48. b4 Kf7 49. Nxa6 Kf6 50. Nc7 Ke5 51. Nxb5 h5 52. Nc7 Rc1 53. Na6 h4 54. Rd2 Ra1 55. Rb2 Rxa3 56. b5 Kd6 57. b6 Kd5 1-0

[Event "Poronin Tatra Limba op"]
[Site "Poronin"]
[Date "2021.05.26"]
[Round "6"]
[White "Stachecki, Mikolaj"]
[Black "Maslanka, Wojciech"]
[Result "0-1"]
[ECO "B18"]
[WhiteElo "1724"]
[BlackElo "1921"]
[PlyCount "54"]
[EventDate "2021.05.22"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. Nh3 Nf6 7. Nf4 e5 8. dxe5 Qa5+ 9. c3 Qxe5+ 10. Be2 Bc5 11. 0-0 0-0 12. Nxg6 hxg6 13. Qb3 Qc7 14. Bg5 Nbd7 15. Rfe1 Rfe8 16. Bc4 Ne5 17. Bxf6 gxf6 18. Ne4 Be7 19. Rad1 f5 20. Ng3 Bd6 21. a4 Re7 22. f4 Bc5+ 23. Kf1 Ng4 24. Rxe7 Qxf4+ 25. Ke2 Qf2+ 26. Kd3 Rd8+ 27. Bd5 Bxe7 0-1

[Event "Poronin Tatra Limba op"]
[Site "Poronin"]
[Date "2021.05.25"]
[Round "5"]
[White "Mirski, Michal"]
[Black "Stachecki, Mikolaj"]
[Result "1-0"]
[ECO "B89"]
[WhiteElo "2009"]
[BlackElo "1724"]
[PlyCount "63"]
[EventDate "2021.05.22"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bc4 e6 7. Be3 Be7 8. Qe2 a6 9. 0-0-0 Nxd4 10. Bxd4 b5 11. Bb3 Bb7 12. f3 0-0 13. g4 Nd7 14. h4 b4 15. Nb1 a5 16. g5 a4 17. Bc4 Qa5 18. g6 hxg6 19. h5 g5 20. h6 e5 21. hxg7 Kxg7 22. Be3 Nc5 23. Qg2 f6 24. Qg4 d5 25. Bxd5 Bxd5 26. Rxd5 Rad8 27. Bxc5 Bxc5 28. Qh5 Rh8 29. Rd7+ Rxd7 30. Qxh8+ Kf7 31. Rh7+ Ke6 32. Qg8+ 1-0

[Event "Poronin Tatra Limba op"]
[Site "Poronin"]
[Date "2021.05.24"]
[Round "4"]
[White "Dziewonski, Dariusz"]
[Black "Stachecki, Mikolaj"]
[Result "1/2-1/2"]
[ECO "B89"]
[WhiteElo "1983"]
[BlackElo "1724"]
[PlyCount "115"]
[EventDate "2021.05.22"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bc4 e6 7. Be3 Be7 8. Qe2 a6 9. 0-0-0 Nxd4 10. Bxd4 b5 11. Bb3 Bb7 12. f3 0-0 13. g4 Nd7 14. Kb1 b4 15. Na4 Qa5 16. Qf2 Bc6 17. Nb6 Nxb6 18. Bxb6 Qb5 19. Bd4 a5 20. c4 bxc3 21. Bxc3 Rfc8 22. Qe3 Rab8 23. Qd3 Qxd3+ 24. Rxd3 a4 25. Bc2 Bb5 26. Rd2 Bg5 27. Rd4 Be3 28. Rb4 Bc5 29. Rxb5 Rxb5 30. Bxa4 Rb7 31. Bb3 Kf8 32. Rd1 Rcb8 33. Kc2 Be3 34. Rxd6 Bf4 35. Rd1 Bxh2 36. Rh1 Bf4 37. Rxh7 Bh6 38. Rh8+ Ke7 39. Rxb8 Rxb8 40. Kd3 Kd6 41. Bd1 Bc1 42. Kc2 Bg5 43. b4 Bf6 44. Bxf6 gxf6 45. Kb3 Kc6 46. Kc3 Rd8 47. Bc2 Rh8 48. a4 Rh3 49. Bd1 Rh1 50. Kd2 e5 51. Kc2 Re1 52. Kd2 Rh1 53. Be2 Rb1 54. Kc3 Rc1+ 55. Kd2 Rb1 56. Bb5+ Kb6 57. Kc3 Re1 58. Kd2 1/2-1/2

[Event "Poronin Tatra Limba op"]
[Site "Poronin"]
[Date "2021.05.24"]
[Round "3"]
[White "Stachecki, Mikolaj"]
[Black "Kaczmarek, Arkadiusz"]
[Result "1/2-1/2"]
[ECO "B45"]
[WhiteElo "1724"]
[BlackElo "2079"]
[PlyCount "75"]
[EventDate "2021.05.22"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Ndb5 Bb4 7. a3 Bxc3+ 8. Nxc3 d5 9. exd5 exd5 10. Bd3 0-0 11. 0-0 d4 12. Ne2 Bg4 13. f3 Bh5 14. Bg5 Re8 15. Bh4 Qb6 16. Qd2 Bg6 17. Rfe1 Bxd3 18. Qxd3 Nd5 19. Bf2 Ne3 20. Nxd4 Qxd4 21. Bxe3 Qxb2 22. Rab1 Qf6 23. Rxb7 Rad8 24. Rd7 Rc8 25. Rd6 Qh4 26. Qd1 Qa4 27. Rd3 Ne5 28. Rb3 h6 29. Bf2 Red8 30. Qa1 Nc4 31. Re7 Na5 32. Rd3 Qxc2 33. Rxd8+ Rxd8 34. Qe5 Qd1+ 35. Qe1 Qxe1+ 36. Bxe1 Nc6 37. Rc7 Rd6 38. Bb4 1/2-1/2

[Event "Poronin Tatra Limba op"]
[Site "Poronin"]
[Date "2021.05.23"]
[Round "2"]
[White "Fus, Jakub"]
[Black "Stachecki, Mikolaj"]
[Result "1-0"]
[ECO "E62"]
[WhiteElo "2420"]
[BlackElo "1724"]
[PlyCount "73"]
[EventDate "2021.05.22"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 0-0 5. Nf3 d6 6. Nc3 Nc6 7. 0-0 Bg4 8. h3 Bxf3 9. Bxf3 Qd7 10. Bg2 e5 11. d5 Ne7 12. Qd3 Ne8 13. e4 f5 14. f4 Kh8 15. Bd2 Nf6 16. fxe5 dxe5 17. Kh2 Rf7 18. Qe2 Raf8 19. Rae1 h6 20. b4 Nh7 21. Rf2 g5 22. exf5 Nxf5 23. Qd3 Nd4 24. Rxf7 Rxf7 25. Ne4 b6 26. Bc3 Nf6 27. Nxf6 Bxf6 28. Qg6 Bg7 29. Bxd4 exd4 30. Re6 Re7 31. Be4 Kg8 32. Bf5 Qd8 33. Qh7+ Kf8 34. Rg6 d3 35. Be6 Ke8 36. Qg8+ Bf8 37. Qxf8+ 1-0

[Event "Poronin Tatra Limba op"]
[Site "Poronin"]
[Date "2021.05.22"]
[Round "1"]
[White "Stachecki, Mikolaj"]
[Black "Fritz, Antoni"]
[Result "1-0"]
[ECO "B57"]
[WhiteElo "1724"]
[BlackElo "2035"]
[PlyCount "153"]
[EventDate "2021.05.22"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bc4 Qb6 7. Nb3 e6 8. 0-0 a6 9. Be3 Qc7 10. f4 b5 11. Bd3 Be7 12. Qf3 h5 13. e5 Ng4 14. exd6 Bxd6 15. Bxb5 Bb7 16. Na5 Rc8 17. Bxc6+ Bxc6 18. Nxc6 Qxc6 19. Qxc6+ Rxc6 20. Bd4 f6 21. Ne4 Be7 22. h3 Nh6 23. c3 Kf7 24. b4 Nf5 25. Bc5 Bxc5+ 26. Nxc5 Rd8 27. Rfd1 Rcd6 28. Rxd6 Rxd6 29. a4 Ne3 30. Rb1 Nd5 31. c4 Nxf4 32. b5 axb5 33. cxb5 Ne2+ 34. Kf2 Nd4 35. b6 Nc6 36. b7 Rd5 37. Rb6 Nb8 38. Na6 Nd7 39. b8Q Nxb8 40. Nxb8 Rd2+ 41. Kf1 Ra2 42. Rb7+ Kg6 43. Ra7 Kf5 44. a5 Kf4 45. a6 Ke3 46. Kg1 g5 47. Re7 e5 48. Re6 Ra1+ 49. Kh2 e4 50. Rxf6 Kd2 51. Nd7 e3 52. Ne5 e2 53. Nf3+ Kd3 54. Rg6 g4 55. hxg4 hxg4 56. Rxg4 Rxa6 57. Rg8 Re6 58. g4 e1Q 59. Nxe1+ Rxe1 60. g5 Re7 61. Kg3 Ke4 62. Kg4 Ke5 63. Rf8 Ke6 64. g6 Ra7 65. Kg5 Ra5+ 66. Kh6 Ra1 67. g7 Rh1+ 68. Kg6 Rg1+ 69. Kh7 Rh1+ 70. Kg8 Ke7 71. Rf4 Ra1 72. Rf7+ Ke8 73. Rf2 Ke7 74. Rf3 Ra2 75. Rh3 Ra8+ 76. Kh7 Kf7 77. g8Q+ 1-0

[Event "POL-ch U20"]
[Site "Pokrzywna"]
[Date "2020.12.06"]
[Round "9"]
[White "Stachecki, Mikolaj"]
[Black "Liskiewicz, Jakub"]
[Result "1/2-1/2"]
[ECO "B03"]
[WhiteElo "1822"]
[BlackElo "1504"]
[PlyCount "90"]
[EventDate "2020.11.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 199 Extra"]
[Source "ChessBase"]
[SourceDate "2021.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2021.01.31"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. c4 Nb6 5. exd6 cxd6 6. Nc3 g6 7. Be3 Bg7 8. Bd3 Nc6 9. Nge2 0-0 10. Qd2 d5 11. c5 Nc4 12. Bxc4 dxc4 13. b3 cxb3 14. axb3 Nb4 15. 0-0 Be6 16. Nf4 Bd5 17. Ra4 a5 18. Rxb4 axb4 19. Ncxd5 g5 20. Nxe7+ Qxe7 21. Nd5 Qe4 22. Nxb4 Ra3 23. f3 Qf5 24. g4 Qd7 25. Qd3 Re8 26. d5 h6 27. d6 Bf6 28. Nd5 Bd8 29. Bc1 Ra2 30. Nc3 Ra1 31. Qd4 Re6 32. Ne4 Ra2 33. Bb2 f6 34. Rf2 Kg7 35. f4 Rxe4 36. Qxe4 Qxg4+ 37. Qg2 Qd1+ 38. Rf1 Qxb3 39. fxg5 Qxb2 40. gxf6+ Kf7 41. Qg7+ Ke6 42. Qg8+ Kd7 43. Qxa2 Qxa2 44. f7 Qd5 45. f8Q Qxc5+ 1/2-1/2

[Event "POL-ch U20"]
[Site "Pokrzywna"]
[Date "2020.12.05"]
[Round "8"]
[White "Topola, Rafal"]
[Black "Stachecki, Mikolaj"]
[Result "1/2-1/2"]
[ECO "A25"]
[WhiteElo "1827"]
[BlackElo "1822"]
[PlyCount "67"]
[EventDate "2020.11.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 199 Extra"]
[Source "ChessBase"]
[SourceDate "2021.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2021.01.31"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. e3 f5 6. d3 Nf6 7. Nge2 0-0 8. 0-0 Rb8 9. Qa4 a6 10. b4 Ne7 11. Qb3 d6 12. Bb2 g5 13. d4 Ng6 14. c5+ Kh8 15. cxd6 cxd6 16. dxe5 dxe5 17. Rad1 Qe7 18. Nd5 Nxd5 19. Bxd5 f4 20. exf4 gxf4 21. gxf4 Nxf4 22. Nxf4 Rxf4 23. Bg2 Be6 24. Qe3 Bxa2 25. Rfe1 Rbf8 26. Bxe5 Qxe5 27. Qxe5 Bxe5 28. Rxe5 Rxb4 29. Re7 b5 30. Ra7 Rb1 31. Rxb1 Bxb1 32. Rxa6 Rb8 33. Bd5 Bd3 34. Ra3 1/2-1/2

[Event "POL-ch U20"]
[Site "Pokrzywna"]
[Date "2020.12.04"]
[Round "7"]
[White "Stachecki, Mikolaj"]
[Black "Durzynski, Jan"]
[Result "1-0"]
[ECO "B42"]
[WhiteElo "1822"]
[BlackElo "1266"]
[PlyCount "45"]
[EventDate "2020.11.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 199 Extra"]
[Source "ChessBase"]
[SourceDate "2021.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2021.01.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Nf6 6. 0-0 d6 7. c4 Nc6 8. Nxc6 bxc6 9. b3 Be7 10. Bb2 0-0 11. f4 d5 12. Qf3 dxc4 13. Bxc4 Qb6+ 14. Kh1 Bb7 15. Nd2 c5 16. Qg3 Rfd8 17. Bd3 Qd6 18. Rf3 Qd7 19. Qh3 h6 20. Rg3 a5 21. Qxh6 g6 22. Rh3 Nh5 23. Qh8# 1-0

[Event "POL-ch U20"]
[Site "Pokrzywna"]
[Date "2020.12.03"]
[Round "6"]
[White "Czak, Dominik"]
[Black "Stachecki, Mikolaj"]
[Result "0-1"]
[ECO "E76"]
[WhiteElo "1267"]
[BlackElo "1822"]
[PlyCount "46"]
[EventDate "2020.11.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 199 Extra"]
[Source "ChessBase"]
[SourceDate "2021.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2021.01.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f4 0-0 6. Nf3 Na6 7. Be2 e5 8. fxe5 dxe5 9. d5 Nc5 10. Qc2 Nfxe4 11. Nxe4 Bf5 12. Bd3 Bxe4 13. Bxe4 f5 14. Nxe5 fxe4 15. Be3 Na6 16. Ng4 Qh4+ 17. Nf2 Nb4 18. Qe2 Nd3+ 19. Kf1 Nxf2 20. Bxf2 Bd4 21. g3 Qf6 22. Kg2 Qxf2+ 23. Qxf2 Rxf2+ 0-1

[Event "POL-ch U20"]
[Site "Pokrzywna"]
[Date "2020.12.02"]
[Round "5"]
[White "Stachecki, Mikolaj"]
[Black "Bochenek, Ryszard"]
[Result "1/2-1/2"]
[ECO "B32"]
[WhiteElo "1822"]
[BlackElo "1445"]
[PlyCount "62"]
[EventDate "2020.11.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 199 Extra"]
[Source "ChessBase"]
[SourceDate "2021.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2021.01.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e5 5. Nb5 d6 6. c4 Be7 7. N1c3 a6 8. Na3 Nf6 9. Be2 0-0 10. Be3 Be6 11. 0-0 Nd7 12. Nd5 f5 13. exf5 Bxf5 14. Bg4 Bxg4 15. Qxg4 Nf6 16. Qe6+ Kh8 17. Nb6 Rb8 18. Rad1 Re8 19. Nc2 Ne4 20. Qf5 Nf6 21. b4 Bf8 22. c5 d5 23. Bg5 d4 24. a3 Be7 25. Ne3 Rf8 26. Qb1 Nd7 27. Bxe7 Qxe7 28. Nf5 Qe6 29. Nxd7 Qxd7 30. Nd6 Rf6 31. Rd3 Rbf8 1/2-1/2

[Event "POL-ch U20"]
[Site "Pokrzywna"]
[Date "2020.12.02"]
[Round "4"]
[White "Suska, Szymon"]
[Black "Stachecki, Mikolaj"]
[Result "1-0"]
[ECO "B56"]
[WhiteElo "1548"]
[BlackElo "1822"]
[PlyCount "71"]
[EventDate "2020.11.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 199 Extra"]
[Source "ChessBase"]
[SourceDate "2021.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2021.01.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. f3 e5 7. Nb3 Be7 8. Bc4 0-0 9. Be3 Be6 10. Bd5 Bxd5 11. Nxd5 Nxd5 12. exd5 Nb8 13. Qd2 f5 14. 0-0-0 a5 15. Qf2 Ra6 16. f4 a4 17. Nd2 e4 18. Bd4 Bf6 19. g4 Ra5 20. Bxf6 Qxf6 21. g5 Qf7 22. c4 Rc5 23. Qd4 Na6 24. a3 b5 25. Kb1 b4 26. Ka2 Rfc8 27. h4 Qh5 28. Rde1 R8c7 29. Qe3 b3+ 30. Ka1 Nb8 31. Qc3 Rxd5 32. Qb4 Na6 33. Qxa4 Rxd2 34. Qxa6 Qf7 35. Qb5 Qxc4 36. Qe8# 1-0

[Event "POL-ch U20"]
[Site "Pokrzywna"]
[Date "2020.12.01"]
[Round "3"]
[White "Stachecki, Mikolaj"]
[Black "Kocierz, Pawel"]
[Result "0-1"]
[ECO "B38"]
[WhiteElo "1822"]
[BlackElo "1701"]
[PlyCount "136"]
[EventDate "2020.11.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 199 Extra"]
[Source "ChessBase"]
[SourceDate "2021.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2021.01.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 g6 3. d4 cxd4 4. Nxd4 Bg7 5. c4 Nc6 6. Be3 Nf6 7. Nc3 d6 8. Be2 0-0 9. 0-0 Bd7 10. Qd2 a6 11. f3 Rb8 12. a4 Nb4 13. a5 Nc6 14. Nxc6 bxc6 15. Bb6 Qc8 16. b4 Be6 17. Rab1 Nd7 18. Na4 c5 19. b5 Bd4+ 20. Kh1 f5 21. Ba7 Ra8 22. Nb6 Nxb6 23. axb6 fxe4 24. bxa6 Qxa6 25. fxe4 Bxc4 26. b7 Bxe2 27. Rxf8+ Rxf8 28. b8Q Rxb8 29. Bxb8 Bd3 30. Re1 c4 31. Qg5 Bf6 32. Qd5+ Kg7 33. e5 Bxe5 34. g3 Bf6 35. g4 Qb6 36. g5 Qxb8 37. gxf6+ exf6 38. Re7+ Kh6 39. Qd4 Qb1+ 40. Kg2 Bf1+ 41. Kf2 Qf5+ 42. Ke1 Bd3 43. Qh4+ Qh5 44. Qxf6 Qa5+ 45. Kf2 Qf5+ 46. Qxf5 Bxf5 47. Rc7 d5 48. Ke3 g5 49. Kd4 Be4 50. Ke5 Kh5 51. Rc6 Kg4 52. Kd4 h5 53. Ke3 Kh3 54. Rh6 h4 55. Rh5 Kg4 56. Rh8 c3 57. Rf8 c2 58. Kd2 Kh3 59. Rg8 g4 60. Rg5 g3 61. hxg3 hxg3 62. Ke2 c1R 63. Rg8 g2 64. Rh8+ Kg4 65. Rg8+ Kf5 66. Rf8+ Ke6 67. Re8+ Kf7 68. Kd2 Kxe8 0-1

[Event "POL-ch U20"]
[Site "Pokrzywna"]
[Date "2020.11.30"]
[Round "2"]
[White "Kazmierowski, Tymon"]
[Black "Stachecki, Mikolaj"]
[Result "1-0"]
[ECO "E62"]
[WhiteElo "1996"]
[BlackElo "1822"]
[PlyCount "57"]
[EventDate "2020.11.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 199 Extra"]
[Source "ChessBase"]
[SourceDate "2021.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2021.01.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. g3 d6 5. Bg2 0-0 6. 0-0 Nc6 7. Nc3 e5 8. dxe5 dxe5 9. Bg5 Be6 10. Qa4 Qb8 11. Nd2 Nd4 12. e3 Bd7 13. Qd1 Ne8 14. exd4 exd4 15. Nb3 dxc3 16. Qxd7 cxb2 17. Rab1 Nd6 18. Be7 Re8 19. Bxd6 Rd8 20. Qxc7 Rxd6 21. Qxb7 Qxb7 22. Bxb7 Rb8 23. c5 Re6 24. c6 Be5 25. Rfe1 Rbe8 26. Kg2 R8e7 27. Nc5 Bc3 28. Nxe6 Bxe1 29. c7 1-0

[Event "POL-ch U20"]
[Site "Pokrzywna"]
[Date "2020.11.30"]
[Round "1"]
[White "Stachecki, Mikolaj"]
[Black "Klimkowski, Jan"]
[Result "0-1"]
[ECO "B90"]
[WhiteElo "1822"]
[BlackElo "2305"]
[PlyCount "70"]
[EventDate "2020.11.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 199 Extra"]
[Source "ChessBase"]
[SourceDate "2021.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2021.01.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e5 7. Nf3 Qc7 8. a4 Be6 9. a5 Qc6 10. Ng5 d5 11. exd5 Bxd5 12. Nxd5 Nxd5 13. Bd2 h6 14. Nf3 Bd6 15. g3 0-0 16. Bg2 Nd7 17. 0-0 N7f6 18. c3 Rad8 19. Qa4 Qc8 20. Rfe1 e4 21. Nd4 Rfe8 22. c4 Ne7 23. Be3 Bc5 24. Nc2 Ng6 25. b4 Bxe3 26. Nxe3 Ne5 27. c5 Rd4 28. Qb3 Red8 29. Red1 Nd3 30. Nc4 Qe6 31. Nd2 Ne5 32. Qc2 Qd7 33. Ra2 Nf3+ 34. Bxf3 exf3 35. Ra3 Ne4 0-1

[Event "Rubinstein Memorial 56th"]
[Site "Polanica Zdroj"]
[Date "2020.08.23"]
[Round "9"]
[White "Rogacewicz, Mikolaj"]
[Black "Stachecki, Mikolaj"]
[Result "1/2-1/2"]
[ECO "D12"]
[WhiteElo "2011"]
[BlackElo "1806"]
[PlyCount "126"]
[EventDate "2020.08.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 197 Extra"]
[Source "ChessBase"]
[SourceDate "2020.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.09.30"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. e3 Bf5 5. Nc3 e6 6. Nh4 Be4 7. f3 Bg6 8. Qb3 Qc7 9. Bd2 Be7 10. Rc1 Nbd7 11. g3 dxc4 12. Bxc4 a6 13. 0-0 b5 14. Be2 Qb6 15. Nxg6 hxg6 16. f4 c5 17. Bf3 Rb8 18. Ne2 0-0 19. Kh1 Rfc8 20. g4 c4 21. Qd1 b4 22. Qe1 Qa5 23. g5 Nd5 24. a3 c3 25. bxc3 bxc3 26. Nxc3 Nxc3 27. Bxc3 Qxa3 28. Be4 a5 29. Rf2 Bb4 30. Rfc2 Bxc3 31. Rxc3 Rxc3 32. Rxc3 Qb4 33. Kg2 Nc5 34. dxc5 Qxe4+ 35. Kg3 Rb2 36. Qf1 Rb1 37. Qg2 Qxg2+ 38. Kxg2 f5 39. gxf6 gxf6 40. e4 a4 41. c6 Rb8 42. Kf3 Rc8 43. e5 Kf7 44. Kg4 Ra8 45. Rd3 Ra7 46. h4 a3 47. c7 Rxc7 48. Rxa3 Rd7 49. Ra8 Rc7 50. Rh8 Kg7 51. Rd8 Rb7 52. Kf3 Rb3+ 53. Ke4 f5+ 54. Kd4 Rh3 55. Kc5 Rxh4 56. Kd6 Rxf4 57. Kxe6 Ra4 58. Rd7+ Kg8 59. Kf6 f4 60. e6 f3 61. Kxg6 Rg4+ 62. Kh5 f2 63. Rf7 Re4 1/2-1/2

[Event "Rubinstein Memorial 56th"]
[Site "Polanica Zdroj"]
[Date "2020.08.21"]
[Round "7"]
[White "Galant, Ireneusz"]
[Black "Stachecki, Mikolaj"]
[Result "0-1"]
[ECO "D00"]
[WhiteElo "1803"]
[BlackElo "1806"]
[PlyCount "120"]
[EventDate "2020.08.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 197 Extra"]
[Source "ChessBase"]
[SourceDate "2020.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.09.30"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. Nc3 d5 5. e3 c6 6. Ne5 Nfd7 7. Nd3 a5 8. a4 b6 9. h4 h5 10. g4 Nf6 11. gxh5 Bg4 12. Be2 Bxe2 13. Qxe2 Nxh5 14. Bh2 Nd7 15. 0-0-0 Qc8 16. f3 Qa6 17. Qf2 Qc4 18. Kd2 Bh6 19. f4 Nhf6 20. Qg2 e6 21. b3 Qa6 22. Nf2 b5 23. e4 b4 24. Ne2 dxe4 25. Nxe4 Nxe4+ 26. Qxe4 Nf6 27. Qf3 Nd5 28. Kc1 0-0-0 29. Bg3 Kb7 30. Rh2 Rc8 31. Kb2 Bg7 32. Ka2 f5 33. Be1 c5 34. c4 bxc3 35. Nxc3 Bxd4 36. Nxd5 Qc6 37. Re2 Qxd5 38. Qxd5+ exd5 39. Re7+ Rc7 40. Re6 Rc6 41. Re7+ Kb6 42. Rd7 Re6 43. Rxd5 Kc6 44. R5xd4 cxd4 45. Bxa5 Rxh4 46. Rxd4 Re4 47. Rd2 Rhxf4 48. Rc2+ Kb7 49. Bd8 Rf1 50. Rc7+ Kb8 51. Rc6 f4 52. Rxg6 f3 53. Bf6 f2 54. Rg8+ Kb7 55. Rf8 Rf4 56. Rf7+ Kc6 57. b4 Ra1+ 58. Kb3 Rb1+ 59. Kc3 f1Q 60. b5+ Rxb5 0-1

[Event "Rubinstein Memorial 56th"]
[Site "Polanica Zdroj"]
[Date "2020.08.19"]
[Round "5"]
[White "Hetzer, Volkhard"]
[Black "Stachecki, Mikolaj"]
[Result "1/2-1/2"]
[ECO "A26"]
[WhiteElo "1911"]
[BlackElo "1806"]
[PlyCount "68"]
[EventDate "2020.08.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 197 Extra"]
[Source "ChessBase"]
[SourceDate "2020.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.09.30"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 g6 3. Nc3 Bg7 4. g3 0-0 5. Bg2 d6 6. 0-0 Nc6 7. Rb1 a5 8. a3 e5 9. d3 Re8 10. Nd2 Nd4 11. e3 Ne6 12. b4 axb4 13. axb4 c6 14. Bb2 d5 15. cxd5 cxd5 16. Nf3 d4 17. exd4 Nxd4 18. Nxd4 exd4 19. Nb5 Qb6 20. Nxd4 Bg4 21. Bf3 Nd5 22. Qb3 Bxd4 23. Bxd4 Qxd4 24. Bxd5 Be6 25. Bxe6 Rxe6 26. Rfe1 Rea6 27. Re4 Qd7 28. Rbe1 Ra3 29. Qc4 Qxd3 30. Re8+ Rxe8 31. Rxe8+ Kg7 32. Qxd3 Rxd3 33. Re7 b6 34. Rb7 Rd6 1/2-1/2

[Event "Rubinstein Memorial 56th"]
[Site "Polanica Zdroj"]
[Date "2020.08.18"]
[Round "4"]
[White "Stachecki, Mikolaj"]
[Black "Jachym, Adam"]
[Result "0-1"]
[ECO "B03"]
[WhiteElo "1806"]
[BlackElo "2042"]
[PlyCount "86"]
[EventDate "2020.08.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 197 Extra"]
[Source "ChessBase"]
[SourceDate "2020.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.09.30"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. c4 Nb6 5. exd6 exd6 6. h3 Bf5 7. Nf3 Be7 8. Bd3 Qd7 9. 0-0 0-0 10. Nc3 Nc6 11. d5 Nb4 12. Bxf5 Qxf5 13. Nd4 Qd3 14. Qxd3 Nxd3 15. b3 Nxc1 16. Raxc1 Bf6 17. Nf5 g6 18. Ne3 Nd7 19. b4 b6 20. a3 a6 21. Ne4 Be7 22. Nd2 a5 23. Nb3 Bf6 24. bxa5 bxa5 25. Nc2 Nb6 26. Nd2 Rfe8 27. Rfd1 Rab8 28. Rb1 Na4 29. Rxb8 Rxb8 30. Ne4 Be5 31. Nd4 Re8 32. Nb5 Nb2 33. Re1 Kg7 34. Nxc7 Rc8 35. Nb5 Rb8 36. Nexd6 f6 37. c5 Nd3 38. f4 Bxd6 39. Rb1 Bxc5+ 40. Kf1 Nxf4 41. d6 Bxd6 42. Rd1 Rxb5 43. Rxd6 Rb3 0-1

[Event "POL-ch U16"]
[Site "Szklarska Poreba"]
[Date "2020.03.13"]
[Round "7"]
[White "Poltorak, Sebastian"]
[Black "Stachecki, Mikolaj"]
[Result "1-0"]
[ECO "E81"]
[WhiteElo "2036"]
[BlackElo "1802"]
[PlyCount "81"]
[EventDate "2020.03.07"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "POL"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 0-0 6. Nge2 a6 7. Be3 Nbd7 8. Qd2 c5 9. dxc5 Nxc5 10. Rd1 Qc7 11. Nf4 Be6 12. Be2 Rac8 13. 0-0 Ncd7 14. Nxe6 fxe6 15. Rc1 Ne5 16. Na4 Nfd7 17. f4 Nc6 18. c5 Qb8 19. Bg4 Nd8 20. Nb6 Nxb6 21. cxb6 Rc6 22. Rxc6 bxc6 23. Qa5 Qb7 24. e5 dxe5 25. fxe5 Rxf1+ 26. Kxf1 Qd7 27. Be2 Nb7 28. Qd2 Qxd2 29. Bxd2 Bxe5 30. Bxa6 Nd8 31. a4 Bxb2 32. Bf4 e5 33. Bg3 c5 34. b7 Nc6 35. Bb5 Nb8 36. a5 Bd4 37. a6 c4 38. Bxc4+ Kf8 39. Bf2 Nc6 40. Bxd4 exd4 41. a7 1-0

[Event "POL-ch U16"]
[Site "Szklarska Poreba"]
[Date "2020.03.13"]
[Round "8"]
[White "Stachecki, Mikolaj"]
[Black "Dziendziel, Mateusz"]
[Result "0-1"]
[ECO "B76"]
[WhiteElo "1802"]
[BlackElo "1700"]
[PlyCount "76"]
[EventDate "2020.03.07"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "POL"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 Nf6 4. Nc3 cxd4 5. Nxd4 g6 6. Be3 Bg7 7. f3 0-0 8. Qd2 Nc6 9. g4 Be6 10. 0-0-0 Nxd4 11. Bxd4 Qa5 12. a3 Rfc8 13. h4 a6 14. h5 b5 15. hxg6 hxg6 16. Qg5 Qc7 17. e5 dxe5 18. Bxe5 Nh7 19. Qh4 Qxe5 20. Qxh7+ Kf8 21. Bd3 Rxc3 22. bxc3 Qxc3 23. Qh3 Rc8 24. f4 Qxa3+ 25. Kd2 Qb4+ 26. Ke2 Qxf4 27. Rhg1 Bd4 28. Rg2 Rc5 29. Rf1 Qg5 30. Qg3 Re5+ 31. Kd1 Bc3 32. Be4 Rxe4 33. Qxc3 Bxg4+ 34. Rxg4 Qxg4+ 35. Kc1 Qg5+ 36. Kb1 Qe5 37. Qc8+ Kg7 38. Rh1 Rb4+ 0-1

[Event "POL-ch U16"]
[Site "Szklarska Poreba"]
[Date "2020.03.12"]
[Round "6"]
[White "Gardian, Adam"]
[Black "Stachecki, Mikolaj"]
[Result "0-1"]
[ECO "B22"]
[WhiteElo "1709"]
[BlackElo "1802"]
[PlyCount "70"]
[EventDate "2020.03.07"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "POL"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. d4 cxd4 5. Qxd4 e6 6. Nf3 Nc6 7. Qe4 f5 8. Qe2 Be7 9. g3 0-0 10. Bg2 d6 11. 0-0 dxe5 12. Nxe5 Nxe5 13. Qxe5 Nf6 14. Nd2 Bd6 15. Qb5 Rb8 16. Nc4 Bc7 17. Bg5 Bd7 18. Qb3 h6 19. Be3 b5 20. Nd2 Bb6 21. Bxb6 Qxb6 22. Rad1 a5 23. Nf3 a4 24. Qb4 Nd5 25. Qh4 Qc7 26. a3 Nb6 27. Qb4 Nc4 28. Rfe1 f4 29. Nd4 e5 30. Bd5+ Kh8 31. Nf3 fxg3 32. hxg3 Bg4 33. Nh4 Qb6 34. Ng6+ Qxg6 35. Be4 Qb6 0-1

[Event "POL-ch U16"]
[Site "Szklarska Poreba"]
[Date "2020.03.11"]
[Round "5"]
[White "Stachecki, Mikolaj"]
[Black "Redzisz, Michal"]
[Result "0-1"]
[ECO "B13"]
[WhiteElo "1802"]
[BlackElo "2105"]
[PlyCount "60"]
[EventDate "2020.03.07"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "POL"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. Bd3 Nc6 5. c3 g6 6. h3 Bg7 7. Nf3 f6 8. 0-0 Nh6 9. Re1 0-0 10. Qc2 Nf7 11. Bd2 e5 12. dxe5 fxe5 13. Nh2 Be6 14. Na3 Rc8 15. Qd1 Nd6 16. Ng4 Qh4 17. Rf1 e4 18. Bb5 h5 19. Ne3 Ne5 20. Be2 Bxh3 21. g3 Qd8 22. Nxd5 Bxf1 23. Qxf1 Nf5 24. c4 Nxg3 25. Qe1 Nxe2+ 26. Qxe2 Qh4 27. Qe3 Nf3+ 28. Kf1 Bd4 29. Ne7+ Qxe7 30. Qh6 Nxd2+ 0-1

[Event "POL-ch U16"]
[Site "Szklarska Poreba"]
[Date "2020.03.10"]
[Round "4"]
[White "Turski, Bartlomiej"]
[Black "Stachecki, Mikolaj"]
[Result "1-0"]
[ECO "B88"]
[WhiteElo "1986"]
[BlackElo "1802"]
[PlyCount "75"]
[EventDate "2020.03.07"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "POL"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. Nc3 Nc6 4. d4 cxd4 5. Nxd4 Nf6 6. Bc4 e6 7. Be3 Be7 8. 0-0 0-0 9. Bb3 a6 10. f4 e5 11. Nxc6 bxc6 12. h3 Nd7 13. Qf3 exf4 14. Bxf4 Nc5 15. Rad1 Nxb3 16. axb3 Be6 17. Qg3 Bh4 18. Qd3 d5 19. exd5 cxd5 20. Nxd5 Bxd5 21. Qxd5 Qb6+ 22. Kh1 Bf6 23. c3 Rfd8 24. Qc4 Rxd1 25. Rxd1 Rd8 26. Rf1 Qb7 27. Re1 h6 28. b4 a5 29. b5 Rd5 30. Re8+ Kh7 31. Qe4+ g6 32. c4 Rd1+ 33. Kh2 Qb6 34. Be3 Qc7+ 35. Qf4 Qxf4+ 36. Bxf4 Rd4 37. b6 Rxf4 38. b7 1-0

[Event "POL-ch U16"]
[Site "Szklarska Poreba"]
[Date "2020.03.09"]
[Round "3"]
[White "Stachecki, Mikolaj"]
[Black "Trybus, Daniel"]
[Result "1/2-1/2"]
[ECO "B03"]
[WhiteElo "1802"]
[BlackElo "2010"]
[PlyCount "76"]
[EventDate "2020.03.07"]
[EventType "swiss"]
[EventRounds "8"]
[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 exd6 6. Nc3 Be7 7. Bd3 0-0 8. Nge2 Bg5 9. 0-0 Re8 10. b3 Nc6 11. Ne4 Bxc1 12. Rxc1 d5 13. N4c3 dxc4 14. bxc4 Bg4 15. f3 Bh5 16. Kh1 Qh4 17. c5 Nd7 18. Rb1 Rab8 19. Nd5 Nf6 20. Nxc7 Re3 21. Qd2 Re7 22. Nb5 Bg6 23. Bxg6 hxg6 24. d5 Nxd5 25. Qxd5 Rxe2 26. Nd6 Qe7 27. h3 Rd8 28. Qc4 Rd7 29. Rxb7 Rxb7 30. Nxb7 Re1 31. Rxe1 Qxe1+ 32. Kh2 Qe5+ 33. f4 Qe3 34. Nd6 Nd4 35. Qxf7+ Kh7 36. Ne8 Nf3+ 37. gxf3 Qf2+ 38. Kh1 Qf1+ 1/2-1/2

[Event "POL-ch U16"]
[Site "Szklarska Poreba"]
[Date "2020.03.08"]
[Round "2"]
[White "Fiedorek, Michal"]
[Black "Stachecki, Mikolaj"]
[Result "1-0"]
[ECO "B62"]
[WhiteElo "2223"]
[BlackElo "1802"]
[PlyCount "97"]
[EventDate "2020.03.07"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "POL"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Qd3 a6 8. Nxc6 bxc6 9. 0-0-0 Qa5 10. Qg3 Bd7 11. Be2 Qb4 12. a3 Qb7 13. e5 dxe5 14. Bxf6 gxf6 15. Ne4 Be7 16. Qg7 0-0-0 17. Nxf6 Bf8 18. Qg4 Qb6 19. Qa4 a5 20. Bf3 Qb5 21. Nxd7 Rxd7 22. Bxc6 Bh6+ 23. Kb1 Rxd1+ 24. Rxd1 Qxa4 25. Bxa4 Rd8 26. Rxd8+ Kxd8 27. c3 Bf8 28. b4 Kc7 29. Kb2 Kb6 30. Be8 f6 31. Bd7 Bh6 32. Bxe6 Bd2 33. Kb3 Be1 34. f3 Bf2 35. Bf5 Bg1 36. h3 h5 37. Be4 Be3 38. c4 axb4 39. axb4 h4 40. c5+ Kb5 41. Bd3+ Kc6 42. Kc4 Kc7 43. b5 Kb7 44. b6 Bd4 45. Kb5 Bf2 46. c6+ Ka8 47. Be4 Kb8 48. c7+ Kc8 49. Bf5+ 1-0

[Event "POL-ch U16"]
[Site "Szklarska Poreba"]
[Date "2020.03.07"]
[Round "1"]
[White "Stachecki, Mikolaj"]
[Black "Grzesik, Gracjan"]
[Result "1-0"]
[ECO "B90"]
[WhiteElo "1802"]
[BlackElo "2039"]
[PlyCount "67"]
[EventDate "2020.03.07"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "POL"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e5 7. Nf3 Be7 8. Bc4 0-0 9. 0-0 Nc6 10. Bg5 Be6 11. Bb3 Rc8 12. Bxf6 Bxf6 13. Nd5 Bxd5 14. Bxd5 Qb6 15. Nd2 Qc5 16. Nc4 Rfd8 17. Ne3 Rc7 18. Qg4 Ne7 19. h4 Rf8 20. Rad1 b5 21. Qg3 g6 22. h5 Qb6 23. Bb3 a5 24. hxg6 hxg6 25. Nf5 d5 26. Bxd5 Nxd5 27. Rxd5 Rxc2 28. Rd6 Rc6 29. Rfd1 Rxd6 30. Rxd6 Qc7 31. Rxf6 Kh8 32. Qh4+ Kg8 33. Qh6 gxf5 34. Qg5+ 1-0

[Event "POL-ch U20"]
[Site "Ustron"]
[Date "2019.11.30"]
[Round "9"]
[White "Jeda, Maciej"]
[Black "Stachecki, Mikolaj"]
[Result "1-0"]
[ECO "B67"]
[WhiteElo "1865"]
[BlackElo "1901"]
[PlyCount "60"]
[EventDate "2019.11.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 193 Extra"]
[Source "ChessBase"]
[SourceDate "2020.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.01.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Qd2 a6 8. 0-0-0 Bd7 9. f4 b5 10. Bxf6 gxf6 11. Kb1 b4 12. Nce2 Qb6 13. Nxc6 Bxc6 14. f5 e5 15. Ng3 h5 16. h4 Qc5 17. Bd3 Ke7 18. Qe2 Bb5 19. Nxh5 Rc8 20. g4 Ba4 21. Qd2 Rg8 22. g5 Rh8 23. Nxf6 Bc6 24. h5 a5 25. Rc1 Qb6 26. c3 b3 27. a3 Qc5 28. h6 Bxh6 29. Rxh6 Rxh6 30. gxh6 Kxf6 1-0

[Event "POL-ch U20"]
[Site "Ustron"]
[Date "2019.11.29"]
[Round "8"]
[White "Kania, Dominik"]
[Black "Stachecki, Mikolaj"]
[Result "1-0"]
[ECO "B22"]
[WhiteElo "1988"]
[BlackElo "1901"]
[PlyCount "57"]
[EventDate "2019.11.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 193 Extra"]
[Source "ChessBase"]
[SourceDate "2020.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.01.31"]
[SourceQuality "1"]

1. e4 c5 2. d4 cxd4 3. c3 Nf6 4. e5 Nd5 5. cxd4 Nc6 6. Nf3 d6 7. Bc4 e6 8. 0-0 Be7 9. exd6 Bxd6 10. Nc3 Nxc3 11. bxc3 0-0 12. Bd3 h6 13. Re1 Qc7 14. Bc2 e5 15. Qd3 f5 16. dxe5 Be7 17. Bb3+ Kh8 18. Bb2 Na5 19. Nd4 Nxb3 20. axb3 b6 21. Rad1 Bb7 22. Qg3 Bd5 23. c4 Bg8 24. Nb5 Qc8 25. e6 Bf6 26. Bxf6 Rxf6 27. e7 Re6 28. Nc7 f4 29. Qxf4 1-0

[Event "POL-ch U20"]
[Site "Ustron"]
[Date "2019.11.28"]
[Round "7"]
[White "Stachecki, Mikolaj"]
[Black "Janeczko, Jakub"]
[Result "1-0"]
[ECO "B33"]
[WhiteElo "1901"]
[BlackElo "1839"]
[PlyCount "71"]
[EventDate "2019.11.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 193 Extra"]
[Source "ChessBase"]
[SourceDate "2020.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.01.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6 8. Na3 b5 9. Bxf6 gxf6 10. Nd5 Bg7 11. Bd3 Ne7 12. Nxe7 Qxe7 13. c4 f5 14. 0-0 0-0 15. Qh5 bxc4 16. Nxc4 f4 17. g3 Be6 18. Rfe1 fxg3 19. hxg3 Bxc4 20. Bxc4 Rfc8 21. b3 a5 22. a4 h6 23. Re3 Ra7 24. Rf3 Rf8 25. Kg2 Kh8 26. Rh1 f6 27. g4 Rd8 28. Rfh3 d5 29. Bxd5 Rxd5 30. exd5 Qd7 31. Rd3 e4 32. Re3 Qd6 33. Rxe4 Re7 34. Rxe7 Qxe7 35. Qf5 Qd6 36. Rc1 1-0

[Event "POL-ch U20"]
[Site "Ustron"]
[Date "2019.11.27"]
[Round "6"]
[White "Dzwierzynski, Bartosz"]
[Black "Stachecki, Mikolaj"]
[Result "1-0"]
[ECO "E94"]
[WhiteElo "2065"]
[BlackElo "1901"]
[PlyCount "149"]
[EventDate "2019.11.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 193 Extra"]
[Source "ChessBase"]
[SourceDate "2020.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.01.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 0-0 6. Be2 Nbd7 7. 0-0 e5 8. Qc2 c6 9. Rd1 Qe7 10. d5 c5 11. a3 Nh5 12. b4 h6 13. bxc5 Nxc5 14. Be3 b6 15. a4 f5 16. Nd2 Nf6 17. f3 f4 18. Bf2 a5 19. Rab1 Nfd7 20. Rb2 Ba6 21. Nb5 Bxb5 22. Rxb5 Rfb8 23. Rdb1 Qd8 24. Qa2 Ra7 25. Nb3 Rab7 26. Nc1 h5 27. Bf1 Bf6 28. Qc2 Bh4 29. Bxc5 Nxc5 30. Nd3 Nxd3 31. Qxd3 Bf6 32. Qb3 Kh8 33. g3 g5 34. Bh3 Qc7 35. Bf5 Qe7 36. Qc2 h4 37. Qg2 Qg7 38. Qh3 Qh6 39. Bd7 Bd8 40. Bc6 Rf7 41. g4 Rc8 42. Qg2 Qf6 43. h3 Qe7 44. Qd2 Bc7 45. Qc3 Rcf8 46. Kg2 Rc8 47. R1b3 Rb8 48. Rb1 Rf6 49. Qa3 Rf7 50. R1b3 Rff8 51. Kf1 Kg8 52. Ke2 Kh7 53. Qb2 Qd8 54. Qc3 Kg8 55. Rb2 Qe7 56. Qb3 Qd8 57. c5 bxc5 58. Qc4 Qe7 59. Kd3 Rxb5 60. Qxb5 Kf7 61. Qa6 Rb8 62. Rxb8 Bxb8 63. Qc8 Qf8 64. Qf5+ Kg7 65. Qxg5+ Kf7 66. Kc4 Qh8 67. Bd7 Qf6 68. Qh5+ Kg7 69. Bf5 Kf8 70. g5 Qg7 71. g6 Qa7 72. Qh8+ Ke7 73. Qg7+ Ke8 74. Qg8+ Ke7 75. Qf7+ 1-0

[Event "POL-ch U20"]
[Site "Ustron"]
[Date "2019.11.26"]
[Round "5"]
[White "Stachecki, Mikolaj"]
[Black "Czernek, Tymon"]
[Result "0-1"]
[ECO "B92"]
[WhiteElo "1901"]
[BlackElo "2097"]
[PlyCount "118"]
[EventDate "2019.11.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 193 Extra"]
[Source "ChessBase"]
[SourceDate "2020.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.01.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e5 7. Nb3 Be7 8. Be3 Be6 9. Nd5 Nbd7 10. Qd3 Bxd5 11. exd5 Nc5 12. Nxc5 dxc5 13. c4 e4 14. Qc2 0-0 15. 0-0 Qc7 16. f3 exf3 17. Bxf3 Bd6 18. g3 Nd7 19. Rae1 f5 20. Bg2 g6 21. Bd2 Be5 22. Bc3 Qd6 23. Re2 Rae8 24. Rfe1 Re7 25. Bxe5 Nxe5 26. Qc3 Rfe8 27. a3 b5 28. b3 Kf7 29. Kh1 h5 30. Qc1 Kf6 31. h4 Ng4 32. Qg5+ Kf7 33. Re6 Rxe6 34. Rxe6 Rxe6 35. dxe6+ Kg7 36. Bd5 bxc4 37. bxc4 Qb8 38. Qe7+ Kg8 39. Qb7 Qxb7 40. Bxb7 a5 41. Bd5 Kf8 42. Kg2 Ne3+ 43. Kf3 Nc2 44. a4 Ke7 45. Kf4 Kf6 46. Kf3 Nd4+ 47. Kf2 Nxe6 48. Bxe6 Kxe6 49. Kf3 Kf6 50. Kf4 g5+ 51. hxg5+ Kg6 52. Ke3 Kxg5 53. Kf3 f4 54. gxf4+ Kf5 55. Kg3 Ke4 56. Kh4 Kxf4 57. Kxh5 Ke4 58. Kg4 Kd4 59. Kf4 Kxc4 0-1

[Event "POL-ch U20"]
[Site "Ustron"]
[Date "2019.11.25"]
[Round "4"]
[White "Raclawicki, Kacper"]
[Black "Stachecki, Mikolaj"]
[Result "1/2-1/2"]
[ECO "E93"]
[WhiteElo "1854"]
[BlackElo "1901"]
[PlyCount "60"]
[EventDate "2019.11.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 193 Extra"]
[Source "ChessBase"]
[SourceDate "2020.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.01.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 0-0 6. h3 Nbd7 7. Be2 e5 8. d5 Nc5 9. Qc2 a5 10. Be3 b6 11. g4 Ne8 12. 0-0-0 Bd7 13. Rhg1 c6 14. Ne1 cxd5 15. Nxd5 Bc6 16. f4 Bxd5 17. exd5 exf4 18. Bxf4 a4 19. g5 Nc7 20. Nf3 N7a6 21. Kb1 Re8 22. Rge1 Ne4 23. Bd3 Nb4 24. Qh2 Nxd3 25. Rxd3 Qc7 26. Rc1 a3 27. b3 Qd7 28. Nd4 Bxd4 29. Rxd4 Re7 30. h4 Rd8 1/2-1/2

[Event "POL-ch U20"]
[Site "Ustron"]
[Date "2019.11.25"]
[Round "3"]
[White "Stachecki, Mikolaj"]
[Black "Jankowiak, Tomasz"]
[Result "1/2-1/2"]
[ECO "B92"]
[WhiteElo "1901"]
[BlackElo "2111"]
[PlyCount "127"]
[EventDate "2019.11.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 193 Extra"]
[Source "ChessBase"]
[SourceDate "2020.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.01.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e5 7. Nb3 Be7 8. Be3 Be6 9. Nd5 Nbd7 10. Qd3 Bxd5 11. exd5 0-0 12. 0-0 Nc5 13. Nxc5 dxc5 14. c4 Qc7 15. f4 Bd6 16. g3 exf4 17. Bxf4 Rae8 18. Bxd6 Qxd6 19. Bf3 Nd7 20. Be4 Ne5 21. Qc2 g6 22. h3 Re7 23. b3 Rfe8 24. Qf2 f5 25. Bc2 Nxc4 26. Bxf5 Re2 27. Be6+ R8xe6 28. Qf7+ Kh8 29. Qf8+ Qxf8 30. Rxf8+ Kg7 31. dxe6 Kxf8 32. bxc4 Ke7 33. Rb1 Kxe6 34. Rxb7 Rxa2 35. Rxh7 a5 36. Rc7 Kd6 37. Rg7 a4 38. Rxg6+ Ke5 39. Ra6 Kd4 40. g4 Kxc4 41. g5 Kb3 42. g6 Re2 43. g7 Re8 44. h4 Rg8 45. Ra7 c4 46. Rb7+ Ka2 47. Kf2 c3 48. Ke2 Rd8 49. h5 c2 50. Rc7 Kb1 51. h6 a3 52. h7 a2 53. Rb7+ Kc1 54. Ra7 Kb1 55. g8Q Rd2+ 56. Kf3 c1Q 57. Qg6+ Rc2 58. Rb7+ Ka1 59. h8Q+ Rb2 60. Rxb2 Qf4+ 61. Kg2 Qf1+ 62. Kg3 Qf3+ 63. Kh4 Qg4+ 64. Kxg4 1/2-1/2

[Event "POL-ch U20"]
[Site "Ustron"]
[Date "2019.11.24"]
[Round "2"]
[White "Adamczewski, Maciej"]
[Black "Stachecki, Mikolaj"]
[Result "1/2-1/2"]
[ECO "E62"]
[WhiteElo "2095"]
[BlackElo "1901"]
[PlyCount "164"]
[EventDate "2019.11.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 193 Extra"]
[Source "ChessBase"]
[SourceDate "2020.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.01.31"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. Nf3 d6 5. g3 Nc6 6. Bg2 0-0 7. 0-0 Bg4 8. Ne1 Bd7 9. Nc2 e5 10. d5 Na5 11. b3 a6 12. Ba3 b6 13. Rc1 Rb8 14. Qd2 Qc8 15. Nb4 h6 16. Rfd1 Re8 17. Bb2 Kh7 18. Nc6 Nxc6 19. dxc6 Be6 20. a4 Nh5 21. e4 Bg4 22. Re1 Nf6 23. Rb1 Bh3 24. Bh1 h5 25. Bc1 Qe6 26. Bf3 Bg4 27. Qe2 Bxf3 28. Qxf3 Bh6 29. Bxh6 Kxh6 30. h4 Kg7 31. Kg2 Rbc8 32. Qd3 Qg4 33. b4 Rb8 34. Rb2 Ra8 35. a5 bxa5 36. bxa5 Reb8 37. Reb1 Qc8 38. Rb7 Qd8 39. f3 Rc8 40. R1b2 Qe8 41. Nd5 Nxd5 42. Qxd5 Qe7 43. Rc2 Rd8 44. Qd2 Rdc8 45. Qb4 Qe8 46. Qa4 Qe7 47. Rd2 Rd8 48. Qb3 Kg8 49. Rd5 Kg7 50. Qb2 f6 51. Qb3 Kf8 52. Rd2 Rdc8 53. Rb2 Qe8 54. Qa4 Rab8 55. Qd1 Rxb7 56. cxb7 Rb8 57. Qd5 Qa4 58. Qe6 Qe8 59. Qxf6+ Qf7 60. Qh8+ Qg8 61. Qh6+ Ke7 62. Qe3 Qxc4 63. Kh2 Qc5 64. Qd2 Qc6 65. Qb4 Qc5 66. Qd2 Qc6 67. Qb4 Qc5 68. Qd2 Qc6 69. Qd5 Qc3 70. Rb3 Qc2+ 71. Kh3 c6 72. Qd3 Qxd3 73. Rxd3 Rxb7 74. g4 Rb5 75. Ra3 d5 76. exd5 cxd5 77. Kg3 Kf6 78. Rc3 Rxa5 79. Rc6+ Kf7 80. Rc7+ Ke6 81. Rc6+ Kf7 82. Rc7+ Ke6 1/2-1/2

[Event "POL-ch U20"]
[Site "Ustron"]
[Date "2019.11.23"]
[Round "1"]
[White "Stachecki, Mikolaj"]
[Black "Koziol, Kamil"]
[Result "0-1"]
[ECO "B92"]
[WhiteElo "1901"]
[BlackElo "2289"]
[PlyCount "62"]
[EventDate "2019.11.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 193 Extra"]
[Source "ChessBase"]
[SourceDate "2020.01.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.01.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e5 7. Nb3 Be6 8. Be3 Be7 9. Nd5 Nxd5 10. exd5 Bf5 11. Qd2 Nd7 12. 0-0 Bg6 13. f3 0-0 14. g3 Rc8 15. c4 f5 16. Rac1 h5 17. Rfd1 b6 18. f4 Bf6 19. Re1 h4 20. Bf3 Kf7 21. fxe5 Nxe5 22. Be2 Rh8 23. Kg2 hxg3 24. h3 f4 25. Bxf4 Be4+ 26. Kf1 g2+ 27. Kg1 Rxh3 28. Bxe5 Bxe5 29. Bh5+ Rxh5 30. Rxe4 Rh1+ 31. Kf2 Qf6+ 0-1

[Event "Rubinstein Memorial-A 55th"]
[Site "Polanica Zdroj"]
[Date "2019.08.25"]
[Round "9"]
[White "Wisniewski, Michal"]
[Black "Stachecki, Mikolaj"]
[Result "1-0"]
[ECO "A24"]
[WhiteElo "2130"]
[BlackElo "1765"]
[PlyCount "79"]
[EventDate "2019.08.17"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 0-0 5. 0-0 d6 6. Nc3 Nbd7 7. Rb1 a5 8. a3 e5 9. d3 c6 10. Bg5 h6 11. Bxf6 Nxf6 12. b4 Qe7 13. Nd2 Be6 14. b5 Qc7 15. Qa4 Rfc8 16. Rb3 Nd7 17. Rbb1 Nc5 18. Qc2 Rab8 19. Rfc1 Qd7 20. Na4 cxb5 21. Nb6 Qc7 22. Nxc8 Rxc8 23. Rxb5 Bd7 24. Rb2 e4 25. Nxe4 Bxb2 26. Qxb2 Nxe4 27. Bxe4 b5 28. Bd5 Qd8 29. cxb5 Rxc1+ 30. Qxc1 Bxb5 31. Qxh6 Qf6 32. Qf4 Qe7 33. Qe4 Qf6 34. Kg2 Bd7 35. Qf4 Qe7 36. e3 Bf5 37. e4 Bc8 38. h4 Qd7 39. Qf6 Kf8 40. h5 1-0

[Event "Rubinstein Memorial-A 55th"]
[Site "Polanica Zdroj"]
[Date "2019.08.24"]
[Round "8"]
[White "Stachecki, Mikolaj"]
[Black "Siekanski, Janusz"]
[Result "1-0"]
[ECO "B85"]
[WhiteElo "1765"]
[BlackElo "2263"]
[PlyCount "71"]
[EventDate "2019.08.17"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 Be7 7. 0-0 0-0 8. f4 Nc6 9. Kh1 a6 10. a4 Qc7 11. Be3 Re8 12. Bd3 Nxd4 13. Bxd4 e5 14. Be3 exf4 15. Rxf4 Be6 16. Nd5 Bxd5 17. exd5 Rf8 18. Bd4 Ne8 19. Qh5 g6 20. Rf3 Bf6 21. Bxf6 Nxf6 22. Qh4 Nxd5 23. Rh3 h5 24. Qg5 Ne7 25. Rxh5 f5 26. Rh3 Rae8 27. Re1 Rf7 28. Qh6 Rg7 29. Bxf5 Nxf5 30. Qh8+ Kf7 31. Qxe8+ Kf6 32. Rf3 Kg5 33. Qe4 d5 34. Qxd5 Rh7 35. Qe5 Qxc2 36. Rg3+ 1-0

[Event "Rubinstein Memorial-A 55th"]
[Site "Polanica Zdroj"]
[Date "2019.08.23"]
[Round "7"]
[White "Malicka, Maria"]
[Black "Stachecki, Mikolaj"]
[Result "1/2-1/2"]
[ECO "B66"]
[WhiteElo "2062"]
[BlackElo "1765"]
[PlyCount "78"]
[EventDate "2019.08.17"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Qd2 a6 8. Nxc6 bxc6 9. 0-0-0 Be7 10. Bxf6 gxf6 11. Bc4 Bb7 12. Rhe1 Qc7 13. f4 d5 14. Bb3 0-0-0 15. exd5 cxd5 16. f5 d4 17. Ne2 d3 18. Nc3 Bd6 19. Rf1 dxc2 20. Qxc2 Bf4+ 21. Kb1 e5 22. g3 Bh6 23. Qe2 Rxd1+ 24. Rxd1 Rd8 25. Rxd8+ Kxd8 26. Qh5 Bd2 27. Qg4 Qd7 28. Qg8+ Kc7 29. Qxf7 Qxf7 30. Bxf7 Bxc3 31. bxc3 Be4+ 32. Kc1 Bxf5 33. Kd2 Kd6 34. Bc4 Bc8 35. Ke3 f5 36. h3 a5 37. Bd3 Be6 38. a3 Kc5 39. Be2 f4+ 1/2-1/2

[Event "Rubinstein Memorial-A 55th"]
[Site "Polanica Zdroj"]
[Date "2019.08.22"]
[Round "6"]
[White "Stachecki, Mikolaj"]
[Black "Betkowski, Andrzej"]
[Result "1/2-1/2"]
[ECO "C02"]
[WhiteElo "1765"]
[BlackElo "2023"]
[PlyCount "70"]
[EventDate "2019.08.17"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Bd7 6. a3 f6 7. Bd3 Qc7 8. 0-0 0-0-0 9. Re1 c4 10. Bc2 h6 11. b3 fxe5 12. Nxe5 Nxe5 13. dxe5 cxb3 14. Bxb3 Bc5 15. Be3 Ne7 16. Bd4 Nf5 17. Bc2 Rhf8 18. a4 Kb8 19. Bxf5 Rxf5 20. Nd2 Rdf8 21. f3 a6 22. Nb3 Ba7 23. Rb1 Qxc3 24. Rc1 Qb4 25. Nc5 Bxa4 26. Qd3 Bb5 27. Qe3 Re8 28. Nxa6+ Bxa6 29. Bxa7+ Ka8 30. Ra1 Rc8 31. Reb1 Qc3 32. Qb6 Qc6 33. Qe3 Qc3 34. Qb6 Qc6 35. Qe3 Rff8 1/2-1/2

[Event "Rubinstein Memorial-A 55th"]
[Site "Polanica Zdroj"]
[Date "2019.08.20"]
[Round "4"]
[White "Stachecki, Mikolaj"]
[Black "Slomczewski, Michal"]
[Result "0-1"]
[ECO "B44"]
[WhiteElo "1765"]
[BlackElo "2115"]
[PlyCount "68"]
[EventDate "2019.08.17"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nb5 d6 6. c4 Nf6 7. N1c3 a6 8. Na3 b6 9. Be2 Bb7 10. Be3 Ne5 11. Qd4 Ned7 12. f3 Be7 13. 0-0 0-0 14. Rfe1 Rc8 15. Rac1 Qc7 16. Nab1 Qb8 17. a3 Bd8 18. b4 Bc7 19. Bf2 Kh8 20. Red1 g5 21. Bg3 Ne5 22. Qe3 Rg8 23. b5 a5 24. Na4 Ned7 25. Nbc3 Nh5 26. f4 gxf4 27. Bxf4 Nxf4 28. Qxf4 Rg7 29. g3 Rcg8 30. Qf2 Nc5 31. Nxc5 dxc5 32. Rd3 Be5 33. Kg2 Bd4 34. Qf3 f5 0-1

[Event "POL-chT U19 Wielkopolskie"]
[Site "Poland"]
[Date "2016.04.03"]
[Round "8.15"]
[White "Poltorak, Sebastian"]
[Black "Stachecki, Mikolaj"]
[Result "1-0"]
[ECO "A83"]
[WhiteElo "1693"]
[BlackElo "1317"]
[PlyCount "105"]
[EventDate "2016.02.13"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. d4 f5 2. e4 fxe4 3. Nc3 Nf6 4. Bg5 g6 5. Bxf6 exf6 6. Nxe4 d5 7. Nc3 Bb4 8. Qe2+ Qe7 9. Qxe7+ Kxe7 10. 0-0-0 Bxc3 11. bxc3 Bf5 12. f3 Nc6 13. Bd3 Bxd3 14. cxd3 Kf7 15. Ne2 g5 16. f4 h6 17. Rhf1 Ne7 18. Rf2 f5 19. fxg5 hxg5 20. h3 Kg6 21. Re1 Nc6 22. Ng1 Rhe8 23. Rfe2 Kf7 24. Rxe8 Rxe8 25. Rxe8 Kxe8 26. Nf3 g4 27. hxg4 fxg4 28. Nh2 g3 29. Nf1 b5 30. Nxg3 b4 31. Kb2 a5 32. Ne2 Kf7 33. Nf4 bxc3+ 34. Kxc3 Ne7 35. Kb3 Kf6 36. Ka4 Kf5 37. Ne2 Nc6 38. a3 Kg4 39. Kb5 Na7+ 40. Kxa5 Kf5 41. Ka6 Nc8 42. Kb7 Nd6+ 43. Kc6 Ke6 44. a4 Ke7 45. a5 Kd8 46. a6 Nc8 47. Kb7 Nd6+ 48. Kb8 Nb5 49. a7 Nxa7 50. Kxa7 Ke7 51. Ka6 Kd6 52. Kb5 c6+ 53. Kb6 1-0

