[Event "61st Rubinstein Mem Open"] [Site "Polanica Zdroj POL"] [Date "2025.08.18"] [Round "3.29"] [White "Hackner, Oskar A"] [Black "Przybylski, Jan"] [Result "0-1"] [WhiteElo "2106"] [BlackElo "2042"] [ECO "D34"] [Opening "QGD"] [Variation "Tarrasch, Prague variation, 9.Bg5"] [EventDate "2025.08.16"] [WhiteFideId "424188"] [BlackFideId "21022585"] 1. d4 d5 2. c4 e6 3. Nf3 c5 4. cxd5 exd5 5. Nc3 Nc6 6. g3 Nf6 7. Bg2 Be7 8. O-O O-O 9. Bg5 Be6 10. dxc5 Bxc5 11. Rc1 Bb6 12. b3 h6 13. Bxf6 Qxf6 14. Nxd5 Bxd5 15. Qxd5 Qb2 16. Qd2 Qa3 17. Rc4 Rad8 18. Qc3 Qxa2 19. Rg4 f6 20. Re4 Qa5 21. b4 Qb5 22. Bh3 f5 23. Rc4 Kh7 24. g4 fxg4 25. Rxg4 Rf6 26. Qc2+ Kh8 27. Bg2 Rdf8 28. h4 Ne5 29. Nxe5 Qxe5 30. e3 Rxf2 31. Rxf2 Qxe3 32. Kh2 Rxf2 33. Qc8+ Kh7 34. Qxb7 Qe5+ 35. Kh3 Qe3+ 36. Kh2 Qe5+ 37. Kh3 Qe3+ 38. Kh2 Bd4 39. Qe4+ Qxe4 40. Rxe4 Bf6 41. Kg3 Rb2 42. Bf1 h5 43. b5 Rb3+ 44. Kg2 Kg6 45. Bc4 Rc3 46. Be6 Rc5 47. Bd7 Rd5 48. Bc6 Rd2+ 49. Kf3 Rd3+ 50. Kg2 Kf5 51. Rc4 Bd4 52. Bf3 Rd2+ 53. Kh1 Kf4 54. Bxh5 Kg3 0-1

[Event "61st Rubinstein Mem Open"] [Site "Polanica Zdroj POL"] [Date "2025.08.17"] [Round "2.3"] [White "Cyborowski, L"] [Black "Hackner, Oskar A"] [Result "1-0"] [WhiteTitle "GM"] [WhiteElo "2457"] [BlackElo "2106"] [ECO "D15"] [Opening "QGD Slav"] [Variation "Schlechter variation"] [EventDate "2025.08.16"] [WhiteFideId "1108760"] [BlackFideId "424188"] 1. c4 c6 2. Nf3 d5 3. d4 Nf6 4. Nc3 g6 5. cxd5 cxd5 6. Bf4 Bg7 7. e3 O-O 8. h3 Qb6 9. a3 Bd7 10. Rb1 Rc8 11. Bd3 Na6 12. O-O Nc7 13. Ne5 Be8 14. Qe2 a6 15. Rfc1 Nb5 16. Na4 Qa7 17. Nc5 Nd6 18. Rc2 a5 19. Nf3 b6 20. Bxd6 exd6 21. Nb3 Ba4 22. Rxc8+ Rxc8 23. Nbd2 Qd7 24. Re1 h6 25. Kh2 Bc6 26. Rc1 Ne4 27. g3 Bb7 28. Rxc8+ Qxc8 29. Qe1 f5 30. Kg2 Kf7 31. Qd1 Ke7 32. Qb3 Qc6 33. Nb1 Ke8 34. Nc3 1-0

[Event "61st Rubinstein Mem Open"] [Site "Polanica Zdroj POL"] [Date "2025.08.16"] [Round "1.38"] [White "Hackner, Oskar A"] [Black "Boryna, Szymon"] [Result "1-0"] [WhiteElo "2106"] [BlackElo "1946"] [ECO "A20"] [Opening "English opening"] [EventDate "2025.08.16"] [WhiteFideId "424188"] [BlackFideId "21057800"] 1. c4 e5 2. g3 Nf6 3. Bg2 c6 4. d4 e4 5. Nc3 d5 6. cxd5 cxd5 7. Bg5 Bb4 8. Nh3 O-O 9. Nf4 Nc6 10. Bxf6 gxf6 11. Qd2 Be6 12. f3 f5 13. Nh5 Kh8 14. O-O Rg8 15. Nf4 Rc8 16. fxe4 fxe4 17. Nxe6 fxe6 18. Rf7 Rc7 19. Raf1 Rg7 20. R7f6 Qe8 21. e3 Nd8 22. Qf2 Rcf7 23. Bh3 Be7 24. Rxf7 Rxf7 25. Qe2 Bg5 26. Nd1 Kg7 27. Bg4 e5 28. dxe5 Qxe5 29. Nf2 Nc6 30. Nh3 Rxf1+ 31. Kxf1 Bh6 32. Nf4 Qf6 33. Qb5 Bxf4 34. gxf4 Qf7 35. Bc8 Ne5 36. Qxb7 Nc4 37. Kf2 Nd6 38. Qxf7+ Kxf7 39. Ba6 Kf6 40. Bf1 Nb7 41. Ke2 Nc5 42. Kd2 Ke7 43. b4 Ne6 44. Bh3 Nc7 45. Bf5 h6 46. a4 Kd6 47. Kc3 Na8 48. Kd4 Nb6 49. a5 Na8 50. Bg4 Nc7 51. Be2 Ne6+ 52. Kc3 d4+ 53. exd4 Nxf4 54. Bc4 e3 55. b5 Kc7 56. d5 Kc8 57. d6 Kd7 58. b6 axb6 59. a6 e2 60. Kd2 1-0

[Event "Najdorf Mem Open A 2022"] [Site "Warsaw POL"] [Date "2022.07.10"] [Round "2.30"] [White "Hackner, Oskar A"] [Black "Zalega, Maciej"] [Result "0-1"] [WhiteElo "2178"] [BlackElo "1912"] [ECO "A05"] [Opening "Reti opening"] [EventDate "2022.07.09"] [WhiteFideId "424188"] [BlackFideId "21858284"] 1. Nf3 Nf6 2. b4 e6 3. a3 d5 4. e3 Bd6 5. Bb2 O-O 6. c4 c5 7. bxc5 Bxc5 8. d4 Be7 9. Nbd2 Nc6 10. Bd3 dxc4 11. Nxc4 b5 12. Ncd2 Qb6 13. O-O Bd7 14. Qe2 a6 15. Rfc1 Rfc8 16. Nb3 Na5 17. Nxa5 Qxa5 18. Ne5 Be8 19. f4 Nd5 20. f5 Bg5 21. Rxc8 Rxc8 22. e4 Nf4 23. Qd1 exf5 24. exf5 Nxd3 25. Qxd3 Qd2 26. Qxd2 Bxd2 27. Nf3 Rc2 28. Nxd2 Rxb2 29. Re1 Kf8 30. Nf3 Bc6 31. Ne5 Rxg2+ 32. Kf1 Rc2 33. d5 Be8 34. f6 gxf6 35. Ng4 Rc4 36. Ne3 Rd4 37. Rc1 f5 38. Rc8 f4 39. Ng4 Ke7 40. Ra8 Bd7 41. Nh6 Ra4 42. Ra7 Rxa3 43. Nxf7 Kxf7 44. Rxd7+ Kf6 45. Rxh7 Ke5 46. Rd7 b4 47. d6 b3 48. Ke2 Ra2+ 49. Kd3 Rxh2 50. Rb7 Kxd6 51. Rb6+ 0-1

[Event "Najdorf Mem Open A 2022"] [Site "Warsaw POL"] [Date "2022.07.09"] [Round "1.18"] [White "Kaminski, Jan"] [Black "Hackner, Oskar A"] [Result "1-0"] [WhiteElo "1870"] [BlackElo "2178"] [ECO "C01"] [Opening "French"] [Variation "exchange variation"] [EventDate "2022.07.09"] [WhiteFideId "1156578"] [BlackFideId "424188"] 1. e4 e6 2. d4 d5 3. exd5 exd5 4. c4 Nf6 5. Nc3 Bb4 6. Bd3 O-O 7. Ne2 Be6 8. cxd5 Nxd5 9. O-O Nc6 10. Ne4 h6 11. a3 Be7 12. b4 f5 13. Nc5 Bxc5 14. dxc5 f4 15. Bb2 Qg5 16. Qc1 Bg4 17. f3 Bh3 18. Rf2 Ne3 19. g3 Rae8 20. Be4 h5 21. Nxf4 Rxf4 22. Qxe3 Ref8 23. Kh1 Rg4 24. Qxg5 Rxg5 25. f4 h4 26. gxh4 Rg4 27. Bxc6 bxc6 28. Be5 Rf7 29. Rd2 Rxh4 30. Rg1 Be6 31. Rg3 Bd5+ 32. Kg1 a6 33. Rdd3 Kf8 34. Rh3 Rxh3 35. Rxh3 Kg8 36. Kf2 Rd7 37. Rd3 Kf7 38. Rg3 Kf8 39. Rd3 Kf7 40. f5 Re7 41. Re3 Ba2 42. Kg3 Bb1 43. Kf4 Kf8 44. Rg3 Rf7 45. Rg5 Bc2 46. h4 Bd3 47. Rh5 Kg8 48. Rg5 Kf8 49. Ke3 Bb1 50. Kf4 Bc2 51. h5 Bb1 52. Bb2 Bc2 53. Be5 Bb1 54. Bc3 Bc2 55. f6 gxf6 56. Rg2 Bh7 57. h6 Ke7 58. Re2+ Kd7 59. Re3 Bc2 60. Rg3 Bh7 61. Rg2 Ke6 62. Rd2 Ke7 63. a4 Bg6 64. Re2+ Kf8 65. Re6 Bc2 66. Rxc6 Bxa4 67. Rxa6 Bb5 68. Rxf6 Rxf6+ 69. Bxf6 Kg8 70. c6 Bxc6 71. Be5 Kh7 72. Kg5 Bb5 73. Bxc7 Bd3 74. Bf4 Kg8 75. Kf6 Kf8 76. Bd6+ Kg8 77. Ke7 1-0

[Event "Chessable ch-ENG 2022"] [Site "Kenilworth ENG"] [Date "2022.05.22"] [Round "7.7"] [White "Hackner, Oskar A"] [Black "Okhai, Shabir"] [Result "1-0"] [WhiteElo "2177"] [BlackElo "2121"] [ECO "E60"] [Opening "King's Indian"] [Variation "3.g3"] [EventDate "2022.05.19"] [WhiteFideId "424188"] [BlackFideId "445134"] 1. d4 Nf6 2. c4 g6 3. g3 c6 4. b3 d5 5. Bb2 Bg7 6. Bg2 O-O 7. Nf3 dxc4 8. bxc4 c5 9. e3 cxd4 10. exd4 Nc6 11. O-O Qb6 12. Qb3 Na5 13. Qxb6 axb6 14. Nbd2 Bf5 15. Rfe1 Rfe8 16. Bf1 Rac8 17. Rac1 h5 18. Ba3 Rc7 19. d5 Bh6 20. Bb2 Rcc8 21. Bd4 Nd7 22. Be3 Bxe3 23. Rxe3 b5 24. c5 Rxc5 25. Rxc5 Nxc5 26. Bxb5 Bd7 27. Rc3 b6 28. Rxc5 bxc5 29. Bxd7 Rd8 30. Bb5 Rxd5 31. Kf1 Kg7 32. Ke2 f5 33. Nc4 Nxc4 34. Bxc4 Rd8 35. Ne5 Kf6 36. f4 g5 37. a4 Rd4 38. Ke3 Rd1 39. a5 Ra1 40. a6 Ra3+ 41. Kf2 Ra4 42. h4 gxf4 43. gxf4 e6 44. Nd7+ Ke7 45. Nb6 1-0

[Event "Chessable ch-ENG 2022"] [Site "Kenilworth ENG"] [Date "2022.05.21"] [Round "5.6"] [White "Hackner, Oskar A"] [Black "Boswell, Jacob Connor"] [Result "0-1"] [WhiteElo "2177"] [BlackElo "2075"] [ECO "A20"] [Opening "English opening"] [EventDate "2022.05.19"] [WhiteFideId "424188"] [BlackFideId "427110"] 1. c4 e5 2. g3 Nf6 3. Bg2 c6 4. d4 e4 5. Nc3 d5 6. Bg5 Bb4 7. Qb3 Bxc3+ 8. Qxc3 O-O 9. cxd5 cxd5 10. Nh3 Nbd7 11. O-O b6 12. Qa3 a5 13. Rfc1 Bb7 14. f3 exf3 15. Bxf3 h6 16. Bf4 g5 17. Bc7 Qe8 18. Nf2 Qe6 19. Qd6 Qe3 20. Rd1 Ba6 21. Rac1 Rfe8 22. Rc3 Qe6 23. Re1 Rac8 24. Qxe6 Rxe6 25. g4 Ne8 26. Bg3 Rxc3 27. bxc3 Bc4 28. a3 Nd6 29. Bxd6 Rxd6 30. e4 Re6 31. Rb1 dxe4 32. Bxe4 Nf6 33. Bf3 Re3 34. Kg2 Rxc3 35. Rxb6 Nd5 36. Bxd5 Bxd5+ 37. Kf1 Bf3 38. Nh3 Bxg4 39. Ng1 Rxa3 40. Rxh6 a4 41. d5 Rd3 42. Ra6 a3 43. h3 Bxh3+ 44. Ke2 Bf5 45. d6 Rd5 46. Rxa3 Rxd6 47. Rg3 Rg6 48. Nf3 f6 49. Ke3 Kf7 50. Rg1 Rg8 51. Kf2 Be4 52. Nd4 f5 53. Ke3 Kf6 54. Ra1 Ra8 55. Rc1 Ra3+ 56. Kf2 Ke5 57. Ne2 Ra2 58. Rc5+ Kd6 59. Rc4 Bd5 60. Rc8 Bb7 61. Rf8 Ba6 62. Rxf5 Rxe2+ 63. Kf3 Re5 64. Rf6+ Re6 65. Rf5 Rg6 66. Kg3 Bc8 67. Rb5 Be6 68. Ra5 Ke7 69. Ra7+ Kf6 70. Rh7 Rg7 71. Rh6+ Kf5 72. Rh1 Ra7 73. Rf1+ Kg6 74. Re1 Ra3+ 75. Kh2 Bf5 0-1

[Event "Chessable ch-ENG 2022"] [Site "Kenilworth ENG"] [Date "2022.05.21"] [Round "6.8"] [White "Shearsby, Jude"] [Black "Hackner, Oskar A"] [Result "0-1"] [WhiteElo "1849"] [BlackElo "2177"] [ECO "C13"] [Opening "French"] [Variation "Albin-Alekhine-Chatard attack"] [EventDate "2022.05.19"] [WhiteFideId "462527"] [BlackFideId "424188"] 1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Be7 5. e5 Nfd7 6. h4 Nc6 7. Nh3 h6 8. Be3 Ndxe5 9. dxe5 d4 10. Bxd4 Qxd4 11. Qxd4 Nxd4 12. O-O-O Nc6 13. Bb5 Bd7 14. Rhe1 Bxh4 15. g3 Be7 16. f4 O-O-O 17. Nf2 g5 18. Nfe4 gxf4 19. gxf4 h5 20. Rh1 h4 21. Rh3 Rdg8 22. Be2 Nb4 23. Rh2 Bc6 24. a3 Nd5 25. Nxd5 Bxd5 26. Nc3 Bg2 27. Bd3 Bc5 28. Re1 h3 29. Nd1 Rg3 30. b4 Bb6 31. a4 Bc6 32. Be4 Rg1 33. Ree2 Bxe4 34. Rxe4 Rd8 0-1

[Event "Chessable ch-ENG 2022"] [Site "Kenilworth ENG"] [Date "2022.05.20"] [Round "3.8"] [White "Hackner, Oskar A"] [Black "Southcott-Moyers, Indy"] [Result "1/2-1/2"] [WhiteElo "2177"] [BlackElo "2028"] [ECO "A20"] [Opening "English opening"] [EventDate "2022.05.19"] [WhiteFideId "424188"] [BlackFideId "488542"] 1. c4 e5 2. g3 Nf6 3. Bg2 c6 4. d4 e4 5. Nc3 Bb4 6. Bg5 d5 7. cxd5 cxd5 8. Nh3 Nbd7 9. O-O Bxc3 10. bxc3 h6 11. Bc1 O-O 12. Nf4 Nb6 13. f3 Bf5 14. g4 Bh7 15. h4 exf3 16. exf3 Nfd7 17. g5 hxg5 18. hxg5 Re8 19. Nh5 Nf8 20. f4 Bf5 21. Ng3 Qd7 22. Qf3 Ng6 23. Nxf5 Qxf5 24. Bh3 Qe4 25. f5 Qxf3 26. Rxf3 Nf8 27. Bf4 Re4 28. Kf2 Rae8 29. Bf1 g6 30. Bb5 Nbd7 31. Bd3 gxf5 32. Bg3 Nb6 33. Rh1 Ng6 34. Rxf5 R4e6 35. Rf3 Nd7 36. Rb1 Rb6 37. Rxb6 Nxb6 38. Rf6 Kg7 39. Kg2 Re3 40. Bxg6 fxg6 41. Be5 Nc4 42. Re6+ Kf7 43. Rf6+ Kg7 1/2-1/2

[Event "Chessable ch-ENG 2022"] [Site "Kenilworth ENG"] [Date "2022.05.20"] [Round "4.9"] [White "Ireland, D"] [Black "Hackner, Oskar A"] [Result "0-1"] [WhiteElo "2000"] [BlackElo "2177"] [ECO "C00"] [Opening "French defence, Steiner variation"] [EventDate "2022.05.19"] [WhiteFideId "413178"] [BlackFideId "424188"] 1. e4 e6 2. c4 d5 3. cxd5 exd5 4. exd5 Nf6 5. Nc3 Nxd5 6. Bc4 Nb6 7. Bb3 Nc6 8. Nf3 Qe7+ 9. Kf1 Be6 10. d4 O-O-O 11. Be3 Nd5 12. Rc1 Nxe3+ 13. fxe3 Bxb3 14. Qxb3 Qxe3 15. Re1 Qd3+ 16. Kf2 Nxd4 17. Nxd4 Qxd4+ 18. Kf3 Qf6+ 19. Ke2 Bc5 20. Ne4 Rhe8 0-1

[Event "Chessable ch-ENG 2022"] [Site "Kenilworth ENG"] [Date "2022.05.19"] [Round "2.3"] [White "Wadsworth, Matthew J"] [Black "Hackner, Oskar A"] [Result "1-0"] [WhiteTitle "IM"] [WhiteElo "2432"] [BlackElo "2177"] [ECO "A15"] [Opening "English, 1...Nf6 (Anglo-Indian defense)"] [EventDate "2022.05.19"] [WhiteFideId "415804"] [BlackFideId "424188"] 1. c4 Nf6 2. g3 c6 3. Bg2 d5 4. Nf3 g6 5. b3 Bg7 6. Bb2 O-O 7. O-O a5 8. d3 Re8 9. Qc2 Na6 10. Bc3 b5 11. cxb5 cxb5 12. Qb2 Bb7 13. Nbd2 b4 14. Bd4 Nc7 15. Rac1 Nb5 16. Be5 Qb6 17. Nb1 Bh6 18. Rc2 Rac8 19. a4 bxa3 20. Nxa3 Rxc2 21. Nxc2 Nd7 22. Bf4 Bxf4 23. gxf4 Rc8 24. Bh3 e6 25. Ra1 Nc3 26. Ncd4 Nf8 27. Qa3 Rc5 28. e3 Bc8 29. Bf1 Nd7 30. Ne2 Nxe2+ 31. Bxe2 Qc7 32. d4 Rc3 33. Qe7 h6 34. Bb5 Kg7 35. Kg2 Nf6 36. Qxc7 Rxc7 37. Rxa5 Ne4 38. Bd3 Nd6 39. Rc5 Rb7 40. Rc6 Rd7 41. Ne5 Bb7 42. Rb6 Rd8 43. Bb5 g5 44. Bd7 f6 45. Rxd6 fxe5 46. fxe5 Kf8 47. Bxe6 Rxd6 48. exd6 Bc6 49. Kg3 h5 50. h4 gxh4+ 51. Kxh4 1-0

[Event "Chessable ch-ENG 2022"] [Site "Kenilworth ENG"] [Date "2022.05.19"] [Round "1.11"] [White "Hackner, Oskar A"] [Black "Zheng, Harry Z"] [Result "1-0"] [WhiteElo "2177"] [BlackElo "1915"] [ECO "E06"] [Opening "Catalan"] [Variation "closed, 5.Nf3"] [EventDate "2022.05.19"] [WhiteFideId "424188"] [BlackFideId "460982"] 1. d4 Nf6 2. c4 e6 3. g3 d5 4. Nf3 Be7 5. Bg2 O-O 6. O-O dxc4 7. Ne5 Nc6 8. Bxc6 bxc6 9. Nxc6 Qe8 10. Nxe7+ Qxe7 11. Qc2 e5 12. dxe5 Qxe5 13. Bf4 Qc5 14. Nd2 Bh3 15. Rfe1 g5 16. Be3 Qd5 17. f3 Ng4 18. Nxc4 Rfe8 19. Rad1 Nxe3 20. Nxe3 Qe5 21. Rd3 Rad8 22. Red1 Rxd3 23. Rxd3 Bc8 24. Qc3 Ba6 25. Rd8 Qb5 26. Nf5 1-0

[Event "4NCL Online S4 Div1 Final"] [Site "lichess.org INT"] [Date "2021.12.14"] [Round "2.14"] [White "Hackner, Oskar A"] [Black "Grieve, Harry"] [Result "1-0"] [BlackTitle "FM"] [WhiteElo "2177"] [BlackElo "2330"] [ECO "A90"] [Opening "Dutch defence"] [EventDate "2021.11.30"] [WhiteFideId "424188"] [BlackFideId "426520"] [WhiteTeam "Chessable White Rose 1"] [BlackTeam "Guildford Young Guns"] 1. d4 e6 2. c4 f5 3. g3 Nf6 4. Bg2 d5 5. Nf3 Bd6 6. O-O O-O 7. Qc2 c6 8. Bf4 Bxf4 9. gxf4 Ne4 10. e3 Nd7 11. cxd5 exd5 12. Ne5 Rf6 13. f3 Nd6 14. Nc3 Rh6 15. Qf2 Qe8 16. Rae1 Qh5 17. h3 Kh8 18. Qg3 Nxe5 19. dxe5 Rg6 20. Qf2 Nc4 21. Kh2 Be6 22. b3 Nb6 23. Ne2 Rg8 24. Rg1 Nd7 25. Nd4 c5 26. Nxe6 Rxe6 27. Rd1 Nb6 28. a4 Rd8 29. Bf1 Nc8 30. Rg5 Qf7 31. Qc2 Ne7 32. Qxc5 Rb6 33. Bb5 Rc8 34. Qd4 Rc2+ 35. Rd2 Rxd2+ 36. Qxd2 a6 37. Qa5 Nc8 38. Bd3 g6 39. Bxf5 gxf5 40. Qc3 h6 41. e6+ 1-0

[Event "4NCL Online S4 Div1 Final"] [Site "lichess.org INT"] [Date "2021.11.30"] [Round "1.24"] [White "Pert, Max"] [Black "Hackner, Oskar A"] [Result "0-1"] [WhiteElo "1537"] [BlackElo "2177"] [ECO "C05"] [Opening "French"] [Variation "Tarrasch, closed variation"] [EventDate "2021.11.30"] [WhiteFideId "456845"] [BlackFideId "424188"] [WhiteTeam "Brentwood"] [BlackTeam "Chessable White Rose 1"] 1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. Ngf3 c5 6. c3 Nc6 7. Bd3 g6 8. h4 h6 9. Qe2 Bg7 10. Bc2 cxd4 11. cxd4 Nb4 12. Bb1 b6 13. a3 Ba6 14. Qe3 Rc8 15. Nf1 Nc2+ 16. Bxc2 Rxc2 17. Ng3 Qc7 18. h5 g5 19. Ng1 f6 20. exf6 Nxf6 21. Nf5 Kf7 22. Ng3 Rc8 23. N1e2 Ne4 24. O-O Nxg3 25. fxg3+ Ke7 26. Bd2 Bxe2 27. Qxe2 Qxg3 28. Rf3 Bxd4+ 29. Kh1 Qh4+ 30. Rh3 Qf2 31. Bb4+ Bc5 32. Qxf2 Rxf2 33. Rc1 Rxb2 34. Rhc3 Kd6 35. Rf3 Rc7 36. Bc3 Re2 37. Rf6 Bxa3 38. Be5+ Rxe5 39. Rxc7 Kxc7 40. Rxh6 g4 41. Rh7+ Kc6 42. Kh2 Bd6 43. g3 d4 44. Rh8 d3 45. h6 Re2+ 46. Kg1 d2 47. Rf8 d1=R+ 48. Rf1 Bc5+ 49. Kh1 Rxf1# 0-1

[Event "4NCL Online S4 Div1 2021"] [Site "lichess.org INT"] [Date "2021.11.16"] [Round "7.124"] [White "Hackner, Oskar A"] [Black "Williams, Sa"] [Result "1-0"] [WhiteElo "2177"] [BlackElo "2228"] [ECO "D10"] [Opening "QGD Slav defence"] [EventDate "2021.08.24"] [WhiteTeam "Chessable White Rose 1"] [BlackTeam "Tiger Sharks 1"] [WhiteFideId "424188"] [BlackFideId "410977"] 1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. e3 Bf5 5. cxd5 cxd5 6. Qb3 Qd7 7. Nf3 e6 8. Bb5 Nc6 9. Ne5 Qc7 10. Qa4 Rc8 11. Qxa7 Bd6 12. Nxc6 bxc6 13. Qxc7 Rxc7 14. Be2 Ke7 15. O-O Nd7 16. b3 Rb8 17. Bb2 Ra7 18. Rfc1 Nb6 19. Nd1 Kd7 20. f3 f6 21. Nc3 Bg6 22. a4 Nc4 23. bxc4 Rxb2 24. cxd5 exd5 25. Bd1 Bb4 26. a5 Rxa5 27. Na4 Rd2 28. Nc5+ Ke7 29. Rxa5 Bxa5 30. Nb3 Bb4 31. Nxd2 Bxd2 32. Rxc6 Bxe3+ 33. Kf1 Bxd4 34. Rc7+ Kd6 35. Rxg7 Bc3 36. f4 d4 37. g4 Be4 38. f5 h6 39. Rg6 Ke5 40. Rxh6 d3 41. Rh8 Kf4 42. Rc8 Bd2 43. Rc4 Ke3 44. h4 Ba5 45. h5 d2 46. Rxe4+ 1-0

[Event "4NCL Online S4 Div1 2021"] [Site "lichess.org INT"] [Date "2021.11.02"] [Round "6.104"] [White "Robertson, Mark M"] [Black "Hackner, Oskar A"] [Result "1/2-1/2"] [BlackElo "2177"] [ECO "C06"] [Opening "French"] [Variation "Tarrasch, closed variation, main line"] [EventDate "2021.08.24"] [WhiteFideId "411736"] [BlackFideId "424188"] [WhiteTeam "Catford Cosmonauts 1"] [BlackTeam "Chessable White Rose 1"] 1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. Bd3 c5 6. c3 Nc6 7. Ne2 cxd4 8. cxd4 f6 9. exf6 Nxf6 10. Nf3 Bd6 11. O-O O-O 12. Bf4 Nh5 13. Bxd6 Qxd6 14. Qd2 Bd7 15. Rac1 Rxf3 16. gxf3 Rf8 17. Rc3 e5 18. dxe5 Nxe5 19. Be4 Bc6 20. Rd1 Nf6 21. Bc2 Nfd7 22. Nd4 Qf6 23. Kh1 Nb6 24. b3 Be8 25. Rg1 Nc6 26. Rd1 Bh5 27. Qd3 g6 28. Qe3 Nxd4 29. Rxd4 Bxf3+ 30. Kg1 Qf7 31. Rd2 Bh5 32. Bd3 Re8 33. Qg3 Re7 34. Rdc2 Nd7 35. Rc8+ Kg7 36. R8c7 Ne5 37. Rxe7 Qxe7 38. Be2 Nf7 39. Bxh5 Qe1+ 40. Kg2 Qe4+ 41. Bf3 Qxc2 42. Bxd5 Qc8 43. Qf4 Qd7 44. Bxf7 Qxf7 45. Qe5+ Qf6 46. Qc7+ Qf7 47. Qe5+ Qf6 48. Qc7+ Qf7 49. Qe5+ 1/2-1/2

[Event "4NCL Online S4 Div1 2021"] [Site "lichess.org INT"] [Date "2021.10.19"] [Round "5.114"] [White "Hackner, Oskar A"] [Black "Hogg, S"] [Result "1-0"] [WhiteElo "2177"] [BlackElo "2008"] [ECO "E12"] [Opening "Queen's Indian defence"] [EventDate "2021.08.24"] [WhiteFideId "424188"] [BlackFideId "2402122"] [WhiteTeam "Chessable White Rose 1"] [BlackTeam "Dundee City"] 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. Bg5 Bb7 5. e3 Be7 6. Bd3 d5 7. Nbd2 Nbd7 8. O-O h6 9. Bf4 O-O 10. Rc1 c5 11. a3 Rc8 12. h3 cxd4 13. exd4 dxc4 14. Nxc4 Nd5 15. Bh2 N7f6 16. Re1 b5 17. Nce5 Rxc1 18. Qxc1 Qb6 19. Re2 Rc8 20. Rc2 Rxc2 21. Bxc2 b4 22. axb4 Nxb4 23. Ba4 Bxf3 24. Nxf3 Nd3 25. Qc8+ Qd8 26. Qb7 Qa5 27. b3 Nd5 28. Qc8+ Qd8 29. Qa6 Nc1 30. Qxa7 Qc8 31. Qb8 Qxb8 32. Bxb8 Nc3 33. Kf1 f6 34. Bf4 Nd3 35. Bd2 Ne4 36. Be3 Nc3 37. Be8 g5 38. Bg6 Nb4 39. Bd2 Nbd5 40. Ne1 Kg7 41. Bd3 Kf8 42. Bc4 Ne4 43. Ba5 Nd6 44. Nd3 Nb7 45. Bd2 Ba3 46. b4 Ke7 47. Ke2 Nd6 48. Bxd5 exd5 49. Kd1 Nb5 50. Be3 f5 51. g3 Ke6 52. Kc2 Nd6 53. h4 f4 54. Bd2 Kf5 55. hxg5 fxg3 56. fxg3 hxg5 57. Ne5 Ne4 58. Be1 Nd6 59. Bd2 Ne4 60. g4+ Ke6 61. Nd3 Kd6 62. Be3 1-0

[Event "4NCL Online S4 Div1 2021"] [Site "lichess.org INT"] [Date "2021.10.05"] [Round "4.114"] [White "Ball, Laurence"] [Black "Hackner, Oskar A"] [Result "0-1"] [WhiteElo "2090"] [BlackElo "2177"] [ECO "C11"] [Opening "French"] [Variation "Steinitz, Gledhill attack"] [EventDate "2021.08.24"] [WhiteFideId "14304627"] [BlackFideId "424188"] [WhiteTeam "Kent KJCA Kestrels 1"] [BlackTeam "Chessable White Rose 1"] 1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. Qg4 c5 6. dxc5 Nxe5 7. Qg3 Nbc6 8. Nb5 a6 9. Bf4 axb5 10. Bxe5 Nxe5 11. Qxe5 Qa5+ 12. c3 b4 13. Nf3 f6 14. cxb4 Qxb4+ 15. Qc3 Bxc5 16. Be2 Qxc3+ 17. bxc3 Ra3 18. c4 Bb4+ 19. Kd1 Bc3 20. Rc1 d4 21. Rc2 Bd7 22. Nd2 e5 23. Bd3 Ba4 24. Nb3 Bc6 25. f3 Kf7 26. Ke2 Rha8 27. Nc1 g6 28. Be4 f5 29. Bxc6 bxc6 30. Kd1 Rb8 31. Nb3 Rb4 32. c5 Rba4 33. Nc1 Bb4 34. Re2 d3 35. Rb2 d2 36. Nd3 Rxd3 0-1

[Event "4NCL Online S4 Div1 2021"] [Site "lichess.org INT"] [Date "2021.09.21"] [Round "3.104"] [White "Hackner, Oskar A"] [Black "Saidmurodov, Shahjahon"] [Result "1-0"] [WhiteElo "2177"] [BlackElo "1902"] [ECO "A15"] [Opening "English, 1...Nf6 (Anglo-Indian defense)"] [EventDate "2021.08.24"] [WhiteFideId "424188"] [BlackFideId "448150"] [WhiteTeam "Chessable White Rose 1"] [BlackTeam "CSC 1"] 1. c4 Nf6 2. g3 e5 3. Bg2 d5 4. cxd5 Nxd5 5. Nc3 Nb6 6. Nf3 Nc6 7. O-O Be7 8. a3 a5 9. d3 Bg4 10. h3 Bh5 11. Be3 Qd7 12. Nd2 Nd4 13. f4 Bc5 14. g4 exf4 15. Rxf4 Bg6 16. Nde4 Be7 17. Kh1 Ne6 18. Rf1 h5 19. g5 a4 20. b3 Nd4 21. bxa4 Nxa4 22. Nd5 Ne6 23. Nxe7 Qxe7 24. Qb3 O-O 25. Qxb7 Rfb8 26. Qc6 Nb6 27. a4 Nd8 28. Qc2 Nd5 29. Bc5 Qe5 30. Qc4 Nf4 31. Bd4 Qf5 32. e3 Nde6 33. exf4 Ra5 34. Be5 Rd8 35. Rf3 h4 36. Bxc7 Rc8 37. Nd6 Rxc7 38. Nxf5 Bxf5 39. Qb4 Rca7 40. d4 Nc7 41. Re3 Be6 42. Re5 R5a6 43. d5 Bd7 44. Re7 Ne8 45. g6 fxg6 46. Qe4 Kf8 47. Qe5 Nf6 48. Qb8+ Kxe7 49. a5 Rxa5 50. Rxa5 Rxa5 51. Qb4+ 1-0

[Event "4NCL Online S4 Div1 2021"] [Site "lichess.org INT"] [Date "2021.09.07"] [Round "2.124"] [White "Davies, Neil"] [Black "Hackner, Oskar A"] [Result "1/2-1/2"] [WhiteElo "1819"] [BlackElo "2177"] [ECO "D27"] [Opening "QGA"] [Variation "classical, 6...a6"] [EventDate "2021.08.24"] [WhiteFideId "447412"] [BlackFideId "424188"] [WhiteTeam "Mushrooms"] [BlackTeam "Chessable White Rose 1"] 1. d4 d5 2. Nf3 c5 3. c4 dxc4 4. e3 Nf6 5. Bxc4 e6 6. O-O a6 7. dxc5 Bxc5 8. Qxd8+ Kxd8 9. a4 Nc6 10. Nc3 Ke7 11. e4 Nd4 12. Be3 Nxf3+ 13. gxf3 Bxe3 14. fxe3 Rd8 15. Rad1 Rxd1 16. Rxd1 Bd7 17. e5 Ne8 18. Kf2 Rc8 19. Bb3 Rc5 20. f4 f6 21. Ne4 Ra5 22. Nd6 Nxd6 23. exd6+ Ke8 24. Rc1 Rh5 25. Kg1 Rh3 26. Rc7 Rxe3 27. Rxb7 Rd3 28. Rb6 Bc8 29. Rb8 Kd7 30. Bxe6+ Kxe6 31. Rxc8 Rxd6 32. Kf2 Rd2+ 33. Kg3 Rxb2 34. Rc6+ Kf5 35. Rxa6 Rb3+ 36. Kg2 Kxf4 37. Ra7 Rb2+ 38. Kf1 Kf3 39. Ke1 Rg2 40. h4 h5 41. a5 g5 42. Rf7 gxh4 43. Rxf6+ Ke3 44. Re6+ Kf4 45. Kf1 Rg5 46. a6 Ra5 47. Kg2 Kg4 48. Rg6+ Kf5 49. Rh6 Kg5 50. Rb6 Ra2+ 51. Kh3 Ra3+ 52. Kg2 Ra4 53. Kh3 Ra3+ 54. Kg2 Kg4 55. Rg6+ Kf5 56. Rh6 h3+ 57. Kh2 Kg4 58. Rg6+ Kh4 59. Rb6 Ra2+ 60. Kh1 h2 61. Rb4+ Kg3 62. Rb3+ Kg4 63. Rb4+ Kf3 64. Rb3+ Kf4 65. Rb4+ Kg5 66. Rb5+ Kg6 67. Rb6+ Kg5 68. Rb5+ Kg6 69. Rb6+ Kg5 70. Rb5+ 1/2-1/2