[Event "Niedersachsen-ch op-B"]
[Site "Verden an der Aller"]
[Date "2020.01.05"]
[Round "7"]
[White "Frese, Immo"]
[Black "Sereda, Polina"]
[Result "1-0"]
[ECO "C22"]
[WhiteElo "1697"]
[PlyCount "103"]
[EventDate "2020.01.02"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 e5 2. d4 exd4 3. Qxd4 Nc6 4. Qe3 d6 5. b3 Nf6 6. Bb2 Be7 7. Nc3 0-0 8. 0-0-0 Ng4 9. Qe1 Bf6 10. h3 Nge5 11. Nd5 Nd7 12. Nxf6+ Nxf6 13. Bd3 Re8 14. f3 Nh5 15. Kb1 Nf4 16. Qg3 Ng6 17. h4 f6 18. f4 Qd7 19. f5 Nge5 20. Nh3 Kf8 21. Nf4 Nxd3 22. cxd3 Qf7 23. h5 h6 24. Rc1 Bd7 25. Ng6+ Kg8 26. Rh4 Rac8 27. Rg4 a6 28. Nf4 Ne5 29. Bxe5 Rxe5 30. Rg6 Kf8 31. Rg4 Ree8 32. Nd5 c6 33. Qxd6+ Kg8 34. Nxf6+ Kh8 35. Nxe8 Rxe8 36. Rg6 Bc8 37. g4 Kh7 38. Rg1 Rg8 39. g5 hxg5 40. R1xg5 Qf8 41. Rxg7+ Qxg7 42. Rxg7+ Rxg7 43. h6 Rg8 44. Qf6 a5 45. Qf7+ Kh8 46. h7 Rg3 47. Qf8+ Kxh7 48. Qxc8 Rxd3 49. Qxb7+ Kg8 50. Kc2 Re3 51. f6 Rxe4 52. Qg7# 1-0

[Event "Niedersachsen-ch op-B"]
[Site "Verden an der Aller"]
[Date "2020.01.04"]
[Round "6"]
[White "Sereda, Polina"]
[Black "Michelitsch, Mario"]
[Result "1/2-1/2"]
[ECO "B18"]
[BlackElo "1598"]
[PlyCount "70"]
[EventDate "2020.01.02"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 c6 2. Nc3 d5 3. d4 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. Nf3 Nd7 7. Be2 e6 8. 0-0 Ngf6 9. Bg5 h6 10. Be3 Bd6 11. Nh4 Bh7 12. Bd3 Bxd3 13. Qxd3 0-0 14. Nf3 Qc7 15. c3 Rfe8 16. Nd2 Bf4 17. Nde4 Nd5 18. c4 f5 19. cxd5 fxe4 20. Qxe4 Bxg3 21. fxg3 Nf6 22. Qg6 Qf7 23. Qxf7+ Kxf7 24. dxc6 bxc6 25. Rac1 Rab8 26. Rxc6 Rxb2 27. Rc7+ Re7 28. Rxe7+ Kxe7 29. a3 Nd5 30. Bf4 Nxf4 31. gxf4 Rd2 32. Rb1 Rxd4 33. Rb7+ Kf6 34. Rxa7 Rxf4 35. a4 Rb4 1/2-1/2

[Event "Niedersachsen-ch op-B"]
[Site "Verden an der Aller"]
[Date "2020.01.04"]
[Round "5"]
[White "Soelter, Thomas"]
[Black "Sereda, Polina"]
[Result "0-1"]
[ECO "D06"]
[WhiteElo "1584"]
[PlyCount "108"]
[EventDate "2020.01.02"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 d5 2. c4 Nf6 3. cxd5 Nxd5 4. e4 Nf6 5. Nc3 e6 6. Bg5 Be7 7. Nf3 0-0 8. Bc4 Nc6 9. 0-0 Nh5 10. Bxe7 Qxe7 11. d5 Na5 12. Bd3 exd5 13. Nxd5 Qd8 14. Qe2 Nc6 15. Rfd1 Bg4 16. h3 Nd4 17. Qe3 Nxf3+ 18. gxf3 Bxh3 19. f4 Bd7 20. Rac1 c6 21. Be2 cxd5 22. Bxh5 Qh4 23. Bf3 dxe4 24. Rxd7 exf3 25. Qxf3 b6 26. Kg2 Qf6 27. Rcc7 a6 28. Rc6 Qxb2 29. Qd5 Rae8 30. Kg3 h6 31. Rcc7 Qf6 32. Rd6 Re6 33. Rdd7 Qg6+ 34. Kf3 Rf6 35. Rd8 Rxd8 36. Qxd8+ Kh7 37. Rc8 Qh5+ 38. Ke3 Re6+ 39. Kd2 Qe2+ 40. Kc3 Qe1+ 41. Kb3 Qxf2 42. Qd3+ g6 43. Qc3 g5 44. Qh8+ Kg6 45. Qg8+ Kf6 46. Qh8+ Kf5 47. Qh7+ Kg4 48. Qxf7 Re3+ 49. Rc3 Rxc3+ 50. Kxc3 Qxf4 51. Qe6+ Kf3 52. Qh3+ Qg3 53. Qh5+ Kg2+ 54. Kc4 Qf4+ 0-1

[Event "Niedersachsen-ch op-B"]
[Site "Verden an der Aller"]
[Date "2020.01.03"]
[Round "4"]
[White "Sereda, Polina"]
[Black "Schindehuette, Frank"]
[Result "0-1"]
[ECO "B01"]
[BlackElo "1621"]
[PlyCount "74"]
[EventDate "2020.01.02"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Nf6 3. c4 Bf5 4. Nc3 c6 5. dxc6 Nxc6 6. Nf3 e6 7. Be2 Bb4 8. 0-0 Qa5 9. Nb5 Rd8 10. d3 a6 11. Na3 Bxa3 12. bxa3 Qc5 13. Bb2 e5 14. Qd2 0-0 15. Rad1 Rfe8 16. Nh4 Ne4 17. Qc1 Nd6 18. Nxf5 Nxf5 19. Bf3 Ncd4 20. Bxd4 Nxd4 21. Bxb7 Ne2+ 22. Kh1 Nxc1 23. Rxc1 Rxd3 24. Bxa6 Ra8 25. Bb7 Raxa3 26. Be4 Rdc3 27. Rcd1 g6 28. Rd2 Qxc4 29. Re1 Qxe4 30. Red1 Qc4 31. h3 Rc1 32. Kh2 Rxd1 33. Rxd1 Rxa2 34. f3 Qe2 35. Rg1 Qxf3 36. h4 Qg4 37. h5 Qh4# 0-1

[Event "Niedersachsen-ch op-B"]
[Site "Verden an der Aller"]
[Date "2020.01.02"]
[Round "2"]
[White "Hoke, Joshua Sky"]
[Black "Sereda, Polina"]
[Result "1-0"]
[ECO "C66"]
[WhiteElo "1566"]
[PlyCount "143"]
[EventDate "2020.01.02"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 d6 4. d4 Bd7 5. 0-0 Nf6 6. Nc3 Be7 7. d5 Nb8 8. Bxd7+ Qxd7 9. Be3 0-0 10. h3 c6 11. dxc6 Nxc6 12. Qe2 Rad8 13. Rad1 Qe6 14. Ng5 Qc8 15. Nb5 a6 16. Nc3 Ne8 17. Nf3 f5 18. Bb6 Rd7 19. exf5 Rxf5 20. Qd3 Rf8 21. Nd5 Kh8 22. c3 Nf6 23. Nxe7 Nxe7 24. Qe2 e4 25. Nd2 d5 26. c4 dxc4 27. Nxc4 Ned5 28. Bd4 Nf4 29. Qe3 Qxc4 30. Bxf6 Rxd1 31. Rxd1 Ne2+ 32. Kh1 gxf6 33. Re1 Nd4 34. Qxe4 Rd8 35. Qe7 Qd5 36. Qxf6+ Kg8 37. Re5 Qxe5 38. Qxe5 Nc6 39. Qe3 Rd1+ 40. Kh2 Ra1 41. Qb3+ Kf8 42. Qxb7 Ne7 43. Qxa6 Rb1 44. Qa8+ Kf7 45. Qb7 Re1 46. b4 Re6 47. Qf3+ Rf6 48. Qb3+ Re6 49. b5 Kf6 50. b6 Nc6 51. b7 Ke7 52. b8Q Nxb8 53. Qxb8 h6 54. a4 Kf6 55. Qf4+ Ke7 56. a5 Kd7 57. Qf5 Ke7 58. Qxe6+ Kxe6 59. a6 Kf5 60. a7 Kg5 61. a8Q h5 62. Qa4 Kg6 63. Qb5 Kh6 64. Qf5 h4 65. g3 hxg3+ 66. fxg3 Kg7 67. Qe6 Kh8 68. Qe7 Kg8 69. h4 Kh8 70. h5 Kg8 71. h6 Kh8 72. Qg7# 1-0

[Event "Niedersachsen-ch op-B"]
[Site "Verden an der Aller"]
[Date "2020.01.02"]
[Round "1"]
[White "Sereda, Polina"]
[Black "Gniffke, Reiner"]
[Result "0-1"]
[ECO "B23"]
[BlackElo "1639"]
[PlyCount "108"]
[EventDate "2020.01.02"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 e6 2. Nc3 c5 3. d3 d5 4. exd5 exd5 5. Nf3 Nc6 6. Qe2+ Be7 7. b3 Nf6 8. Bb2 0-0 9. Qd2 Re8 10. Be2 d4 11. Ne4 Bf5 12. Nxf6+ Bxf6 13. 0-0 Qc7 14. Bd1 Ne5 15. Re1 Ng6 16. c3 Rxe1+ 17. Nxe1 Rd8 18. Nf3 dxc3 19. Bxc3 Rxd3 20. Qe2 Rxc3 21. Nd2 Qe5 22. Qf1 Bd3 23. Nf3 Bxf1 24. Nxe5 Bxe5 25. Kxf1 Rd3 26. Rc1 b6 27. h3 Bb2 28. Rb1 Ba3 29. Bc2 Rc3 30. Be4 Rc1+ 31. Rxc1 Bxc1 32. Bxg6 hxg6 33. Ke2 f5 34. f3 Kf7 35. Kd1 Be3 36. Ke2 Bd4 37. Kd3 Ke6 38. Kc4 Kd6 39. Kb5 Kd5 40. Ka6 Kc6 41. Kxa7 b5 42. Ka6 c4 43. bxc4 bxc4 44. Ka5 c3 45. Kb4 c2 46. Kc4 Bf6 47. a4 c1Q+ 48. Kd3 Kd5 49. a5 Qc3+ 50. Ke2 f4 51. a6 Qe3+ 52. Kd1 Kc4 53. Kc2 Qe2+ 54. Kb1 Qb2# 0-1

[Event "Hannover-ch U12"]
[Site "Lehrte"]
[Date "2013.10.20"]
[Round "10"]
[White "Sereda, Polina"]
[Black "Kolisnychenko, Nikita"]
[Result "1-0"]
[ECO "B13"]
[WhiteElo "1102"]
[BlackElo "1262"]
[PlyCount "55"]
[EventDate "2013.10.17"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 c6 2. Nc3 d5 3. exd5 cxd5 4. d4 Nf6 5. Nf3 Nc6 6. Bb5 Bd7 7. Bg5 h6 8. Bxf6 gxf6 9. 0-0 Rg8 10. Nxd5 Bh3 11. Nf4 Qd7 12. Re1 Bxg2 13. Nxg2 Qh3 14. Kf1 Qxg2+ 15. Ke2 a6 16. Bxc6+ bxc6 17. Rg1 Qh3 18. Rxg8 Kd7 19. d5 h5 20. Qd3 Kc7 21. dxc6 Qe6+ 22. Kf1 Qxc6 23. Rd1 e6 24. Rh8 e5 25. Rh7 e4 26. Rxf7+ Kb6 27. Qb3+ Ka5 28. Rd5+ 1-0

[Event "Hannover-ch U12"]
[Site "Lehrte"]
[Date "2013.10.20"]
[Round "11"]
[White "Sereda, Polina"]
[Black "Stelmaszyk, Nico"]
[Result "0-1"]
[ECO "C47"]
[WhiteElo "1102"]
[BlackElo "1158"]
[PlyCount "118"]
[EventDate "2013.10.17"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Bc5 4. d3 h6 5. Be2 Nf6 6. 0-0 0-0 7. Nxe5 Nxe5 8. d4 Bxd4 9. Qxd4 d6 10. Qe3 Bg4 11. Bxg4 Nfxg4 12. Qg3 Kh7 13. f4 Nxh2 14. Qxh2 Ng6 15. f5 Ne5 16. f6 Ng4 17. Qh4 Nxf6 18. Be3 c5 19. Qh3 Qc8 20. Qg3 Qe6 21. Qf3 Rae8 22. Bf4 Nxe4 23. Nxe4 Qxe4 24. Qxe4+ Rxe4 25. Bxd6 Rd8 26. Bxc5 Rd2 27. Bxa7 Rxc2 28. b3 Ree2 29. Kh2 Rxg2+ 30. Kh3 Rxa2 31. Rxa2 Rxa2 32. Bc5 f6 33. Kh4 Rb2 34. b4 b6 35. Bxb6 Rxb4+ 36. Kh3 Rxb6 37. Kg3 g5 38. Kg4 Kg6 39. Rf2 h5+ 40. Kh3 Rb3+ 41. Kh2 g4 42. Kg2 h4 43. Re2 f5 44. Rd2 Kg5 45. Kh2 Kf4 46. Rf2+ Rf3 47. Re2 g3+ 48. Kh3 Rf2 49. Rxf2+ gxf2 50. Kg2 Ke3 51. Kf1 f4 52. Kg2 Ke2 53. Kh2 f3 54. Kh3 f1Q+ 55. Kxh4 Qg2 56. Kh5 Qg7 57. Kh4 Qg6 58. Kh3 Qg5 59. Kh2 Qg2# 0-1

[Event "Hannover-ch U12"]
[Site "Lehrte"]
[Date "2013.10.19"]
[Round "9"]
[White "Fischer, Ole"]
[Black "Sereda, Polina"]
[Result "0-1"]
[ECO "C55"]
[WhiteElo "854"]
[BlackElo "1102"]
[PlyCount "102"]
[EventDate "2013.10.17"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Be7 4. d3 d6 5. h3 Nf6 6. Be3 0-0 7. Nc3 Be6 8. Bb3 Qd7 9. Qe2 Rad8 10. 0-0 Bxb3 11. axb3 a6 12. Rfd1 d5 13. exd5 Nxd5 14. d4 Nxc3 15. bxc3 exd4 16. Bxd4 Nxd4 17. cxd4 Bf6 18. Qe3 Rfe8 19. Ne5 Qb5 20. Qf4 h6 21. Nf3 c5 22. Ra4 cxd4 23. Nxd4 Qc5 24. Rc4 Qb6 25. c3 Be5 26. Qd2 Bxd4 27. Rxd4 Rxd4 28. cxd4 Qxb3 29. Qd3 Qxd3 30. Rxd3 b5 31. Rd1 a5 32. d5 Rd8 33. d6 Kh7 34. Rd5 b4 35. Rxa5 Rxd6 36. Rb5 Rd4 37. Kf1 Kg6 38. Ke2 Kf6 39. Ke3 Rc4 40. Rb6+ Ke5 41. g3 f5 42. f4+ Kd5 43. Kd3 Kc5 44. Rb7 Rc3+ 45. Kd2 g5 46. Rc7+ Kd5 47. Rxc3 bxc3+ 48. Kxc3 gxf4 49. gxf4 Ke4 50. Kd2 Kxf4 51. Ke2 Kg3 0-1

[Event "Hannover-ch U12"]
[Site "Lehrte"]
[Date "2013.10.19"]
[Round "7"]
[White "Meyer, Kevin"]
[Black "Sereda, Polina"]
[Result "0-1"]
[ECO "C65"]
[WhiteElo "727"]
[BlackElo "1102"]
[PlyCount "26"]
[EventDate "2013.10.17"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 d6 4. 0-0 Nf6 5. d3 Be7 6. Nc3 0-0 7. Nd5 Bg4 8. Bg5 Nd4 9. Nxe7+ Qxe7 10. Bxf6 Qxf6 11. c4 Nxf3+ 12. gxf3 Bxf3 13. Qe1 Qg6# 0-1

[Event "Hannover-ch U12"]
[Site "Lehrte"]
[Date "2013.10.19"]
[Round "8"]
[White "Sereda, Polina"]
[Black "Opitz, Tom"]
[Result "1-0"]
[ECO "C47"]
[WhiteElo "1102"]
[PlyCount "61"]
[EventDate "2013.10.17"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. d3 h6 5. Be2 Bc5 6. 0-0 0-0 7. Be3 d6 8. Qd2 Bxe3 9. fxe3 Bg4 10. Rad1 Bxf3 11. Bxf3 Qc8 12. d4 Ng4 13. Qe2 Nf6 14. Qe1 Nb4 15. Rd2 Nc6 16. Qg3 Qd7 17. Be2 a6 18. Rxf6 Qe7 19. Rxh6 Nb4 20. a3 Nc6 21. Nd5 Qd8 22. Rd1 Na5 23. Rf1 c6 24. Nf6+ Qxf6 25. Rfxf6 Rfc8 26. Rf1 Kf8 27. Rh8+ Ke7 28. Qg5+ f6 29. Qxg7+ Ke6 30. Bg4+ f5 31. Bxf5# 1-0

[Event "Hannover-ch U12"]
[Site "Lehrte"]
[Date "2013.10.18"]
[Round "5"]
[White "Chen, Jason"]
[Black "Sereda, Polina"]
[Result "1-0"]
[ECO "C55"]
[WhiteElo "711"]
[BlackElo "1102"]
[PlyCount "25"]
[EventDate "2013.10.17"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bc4 d6 5. Ng5 Be6 6. Bxe6 fxe6 7. Nxe6 Qe7 8. Ng5 Nd7 9. d3 h6 10. Nd5 Qd8 11. Ne6 Qc8 12. Qh5+ g6 13. Qxg6# 1-0

[Event "Hannover-ch U12"]
[Site "Lehrte"]
[Date "2013.10.18"]
[Round "6"]
[White "Sereda, Polina"]
[Black "Azizi, Siar"]
[Result "0-1"]
[ECO "C42"]
[WhiteElo "1102"]
[BlackElo "896"]
[PlyCount "68"]
[EventDate "2013.10.17"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Nc3 Nc6 4. d3 Bb4 5. Be2 0-0 6. 0-0 d6 7. Bg5 h6 8. Bh4 Nd4 9. Nxd4 exd4 10. Nd5 g5 11. Nxb4 gxh4 12. Bh5 h3 13. g3 c5 14. Nd5 Nxd5 15. exd5 Qg5 16. Qf3 f5 17. Qd1 f4 18. Bf3 Bf5 19. c4 dxc3 20. bxc3 Rae8 21. Qd2 Bg6 22. Rab1 h5 23. Kh1 h4 24. g4 b6 25. Rg1 c4 26. Rbe1 Rxe1 27. Qxe1 Re8 28. Qb1 Bxd3 29. Qb4 Be2 30. Bxe2 Qxd5+ 31. f3 Rxe2 32. Rf1 Re1 33. Kg1 Qxf3 34. Rxe1 Qg2# 0-1

[Event "Hannover-ch U12"]
[Site "Lehrte"]
[Date "2013.10.18"]
[Round "4"]
[White "Sereda, Polina"]
[Black "Kibenko, Dimitrij"]
[Result "0-1"]
[ECO "B50"]
[WhiteElo "1102"]
[BlackElo "1097"]
[PlyCount "72"]
[EventDate "2013.10.17"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 d6 3. d3 Nc6 4. Nf3 g6 5. Be2 Bg7 6. 0-0 Nf6 7. Bg5 0-0 8. Qd2 Rb8 9. Bxf6 Bxf6 10. Qh6 Bg7 11. Qh4 h6 12. Nd2 Ne5 13. f4 Nc6 14. f5 Nd4 15. fxg6 fxg6 16. Qg3 Kh7 17. Rf2 Rxf2 18. Qxf2 Qg8 19. Nd5 Nxe2+ 20. Qxe2 e6 21. Ne7 Qf7 22. Nxc8 Rxc8 23. Nc4 Qe7 24. Rf1 b5 25. Na3 a6 26. c3 Qg5 27. Qf2 Rf8 28. Qe2 Rxf1+ 29. Kxf1 Qf4+ 30. Kg1 Qc1+ 31. Kf2 b4 32. cxb4 cxb4 33. Nc4 Qf4+ 34. Kg1 Bd4+ 35. Kh1 Qc1+ 36. Qd1 Qxd1# 0-1

[Event "Hannover-ch U12"]
[Site "Lehrte"]
[Date "2013.10.17"]
[Round "1"]
[White "Albrecht, Dennis"]
[Black "Sereda, Polina"]
[Result "1-0"]
[ECO "C55"]
[WhiteElo "698"]
[BlackElo "1102"]
[PlyCount "47"]
[EventDate "2013.10.17"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Be7 4. d3 d6 5. Nc3 Nf6 6. Ng5 0-0 7. Be3 Ng4 8. Qf3 Bxg5 9. h3 Nxe3 10. fxe3 Be6 11. 0-0-0 Bxc4 12. dxc4 Qd7 13. h4 Be7 14. Qg3 Bf6 15. Nd5 Qd8 16. Rdf1 Be7 17. h5 Qd7 18. h6 g6 19. Rf6 Bxf6 20. Nxf6+ Kh8 21. Nxd7 Rfd8 22. Qg5 Rxd7 23. Qf6+ Kg8 24. Qg7# 1-0

[Event "Hannover-ch U12"]
[Site "Lehrte"]
[Date "2013.10.17"]
[Round "3"]
[White "Schieble, Johannes"]
[Black "Sereda, Polina"]
[Result "0-1"]
[ECO "C55"]
[WhiteElo "814"]
[BlackElo "1102"]
[PlyCount "68"]
[EventDate "2013.10.17"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Be7 4. 0-0 d6 5. h3 Nf6 6. d3 0-0 7. Nc3 Be6 8. Bb3 Nd4 9. Nxd4 exd4 10. Nd5 Bxd5 11. exd5 Qd7 12. Bg5 Qf5 13. Bxf6 Bxf6 14. Re1 Be5 15. c3 Qf4 16. g3 Qf5 17. Kh2 Qxf2+ 18. Kh1 Bxg3 19. Re2 Qf3+ 20. Kg1 Rae8 21. Rg2 Re1+ 22. Qxe1 Bxe1 23. Rxe1 dxc3 24. bxc3 Qxd3 25. Ba4 Qxc3 26. Rge2 Qg3+ 27. Rg2 Qxe1+ 28. Kh2 f5 29. Bb5 Rf6 30. Re2 Qh4 31. Re8+ Kf7 32. a4 Rg6 33. a5 Qf2+ 34. Kh1 Qg2# 0-1

[Event "Hannover-ch U12"]
[Site "Lehrte"]
[Date "2013.10.17"]
[Round "2"]
[White "Sereda, Polina"]
[Black "Nguyen, Nina"]
[Result "1-0"]
[ECO "C47"]
[WhiteElo "1102"]
[PlyCount "95"]
[EventDate "2013.10.17"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 d6 3. Nc3 Nf6 4. d3 Nc6 5. Be2 Bg4 6. Bg5 Be7 7. 0-0 0-0 8. Qd2 Nd7 9. Bxe7 Qxe7 10. Nd5 Qd8 11. Ne1 Be6 12. f4 Bxd5 13. exd5 Ne7 14. fxe5 Nxd5 15. exd6 cxd6 16. Bf3 N5f6 17. Bxb7 Rb8 18. Be4 Re8 19. Qf4 g6 20. Qxd6 Rb6 21. Qd4 Qb8 22. b3 a6 23. c4 Qe5 24. Qxe5 Nxe5 25. Nf3 Ned7 26. Nd4 Nxe4 27. Rfe1 Ng5 28. Rxe8+ Kg7 29. Re7 Rb7 30. Rf1 Nc5 31. Rxb7 Nxb7 32. b4 Ne6 33. Nxe6+ fxe6 34. d4 Nd6 35. c5 Nc4 36. c6 Nd6 37. c7 Nc8 38. a4 h5 39. b5 a5 40. Rd1 Kf7 41. d5 Ke7 42. dxe6 Kxe6 43. Rd8 Na7 44. Ra8 Kd7 45. Rxa7 Kc8 46. b6 g5 47. Ra8+ Kb7 48. c8Q+ 1-0

[Event "Daehne Cup Region 11/12 I Rest"]
[Site "Hannover"]
[Date "2011.11.16"]
[Round "3"]
[White "Nagel, Detlev"]
[Black "Sereda, Polina"]
[Result "1-0"]
[ECO "A00"]
[WhiteElo "1425"]
[PlyCount "43"]
[EventDate "2011.11.??"]
[EventType "swiss"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. g3 e5 2. Bg2 Nc6 3. c3 d6 4. d4 f6 5. d5 Nce7 6. e4 c6 7. c4 g6 8. Ne2 f5 9. 0-0 Nf6 10. f3 Bg7 11. Nbc3 Bd7 12. Qb3 Qc7 13. Be3 c5 14. a4 a5 15. Nb5 Qc8 16. Nxd6+ Kd8 17. Nxc8 Kxc8 18. Bxc5 Re8 19. Nc3 f4 20. Nb5 Kd8 21. Nd6 Rf8 22. Qb6# 1-0

[Event "Daehne Cup Region 11/12 I Rest"]
[Site "Hannover"]
[Date "2011.11.09"]
[Round "2"]
[White "Basic, Miroslav"]
[Black "Sereda, Polina"]
[Result "1-0"]
[ECO "D00"]
[WhiteElo "1433"]
[PlyCount "57"]
[EventDate "2011.11.??"]
[EventType "swiss"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. d4 d5 2. Nc3 Nf6 3. Bf4 Nc6 4. Nb5 Kd7 5. Nxc7 Rb8 6. Nxd5 Ra8 7. Nxf6+ exf6 8. e3 Bd6 9. Qf3 Re8 10. 0-0-0 Ke7 11. Bb5 Bd7 12. Qe4+ Kf8 13. Bxd6+ Kg8 14. Qh4 g6 15. d5 Na5 16. Bxd7 Qxd7 17. Qxf6 Qd8 18. Qxd8 Rexd8 19. Bc7 Rd7 20. Bxa5 Rc8 21. Nf3 b6 22. Bc3 Rdc7 23. d6 Rc4 24. d7 Rd8 25. Bf6 Rf8 26. d8Q Rxd8 27. Bxd8 Ra4 28. Bf6 Rxa2 29. Rd8# 1-0

[Event "Daehne Cup Region 11/12 I Haupt"]
[Site "Hannover"]
[Date "2011.11.02"]
[Round "1"]
[White "Sereda, Polina"]
[Black "Diskin, Semen"]
[Result "0-1"]
[ECO "B02"]
[BlackElo "1773"]
[PlyCount "72"]
[EventDate "2011.11.02"]
[EventType "k.o."]
[EventRounds "4"]
[EventCountry "GER"]
[SourceTitle "EXT 2022"]
[Source "ChessBase"]
[SourceDate "2021.10.06"]
[SourceVersion "1"]
[SourceVersionDate "2021.10.06"]
[SourceQuality "1"]

1. e4 Nf6 2. Nc3 d5 3. d3 dxe4 4. dxe4 Qxd1+ 5. Nxd1 Nxe4 6. Nf3 Nc6 7. Bd3 Nc5 8. 0-0 Nxd3 9. cxd3 Bg4 10. Nc3 Bxf3 11. gxf3 0-0-0 12. Be3 Rxd3 13. a3 e6 14. Na2 Be7 15. Nb4 Bxb4 16. axb4 a6 17. b5 Nb8 18. bxa6 bxa6 19. Rac1 Kb7 20. Rc2 Rhd8 21. Rcc1 Nc6 22. Rb1 Rb3 23. Rfc1 e5 24. Rc2 Nd4 25. Rc5 Rd7 26. Rxe5 Nxf3+ 27. Kg2 Nxe5 28. Bf4 Nd3 29. Be3 Rxb2 30. Rg1 f5 31. Bg5 Rxf2+ 32. Kh1 Ne5 33. Bh4 Re2 34. Rf1 f4 35. Rxf4 Rd1+ 36. Rf1 Rxf1# 0-1

[Event "Hannover-ch U10"]
[Site "Lehrte"]
[Date "2010.10.12"]
[Round "13"]
[White "Sereda, Polina"]
[Black "Duman, Deniz"]
[Result "0-1"]
[ECO "D02"]
[PlyCount "90"]
[EventDate "2010.10.09"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Qd7 3. Nc3 Nc6 4. g3 b6 5. Bg2 Bb7 6. 0-0 0-0-0 7. Be3 Ba6 8. a4 h6 9. Ra3 e6 10. Rb3 Bc4 11. Rxb6 cxb6 12. b3 Bb4 13. bxc4 Bxc3 14. Qd3 Nxd4 15. Qxc3 Nxf3+ 16. Bxf3 g5 17. Qxh8 Ne7 18. Qa1 dxc4 19. Rd1 Qxd1+ 20. Qxd1 Rxd1+ 21. Kg2 Nf5 22. h4 Nxe3+ 23. fxe3 gxh4 24. gxh4 a6 25. Kg3 b5 26. Kg4 bxa4 27. Kh5 a3 28. Kxh6 a2 29. h5 a1Q 30. Kg5 Rg1+ 31. Bg4 f6+ 32. Kg6 f5 33. h6 fxg4 34. h7 Rh1 35. e4 g3 36. e3 g2 37. c3 g1R+ 38. Kf6 Rxh7 39. Kxe6 Rg6+ 40. Kf5 Qf1+ 41. Kxg6 Qf7+ 42. Kg5 Qh5+ 43. Kf4 Rf7+ 44. Kg3 Qg5+ 45. Kh3 Rh7# 0-1

[Event "Hannover-ch U10"]
[Site "Lehrte"]
[Date "2010.10.12"]
[Round "12"]
[White "Wehrhahn, Duncan"]
[Black "Sereda, Polina"]
[Result "1-0"]
[ECO "D00"]
[WhiteElo "772"]
[PlyCount "47"]
[EventDate "2010.10.09"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. d4 d5 2. Nc3 Nf6 3. Nf3 Nc6 4. Bg5 Bg4 5. e3 e6 6. Bb5 Bxf3 7. Qxf3 Bb4 8. Bxc6+ bxc6 9. 0-0 0-0 10. e4 dxe4 11. Nxe4 Qxd4 12. Nxf6+ Kh8 13. Qh5 h6 14. Bxh6 Qxf6 15. Bg5+ Kg8 16. Bxf6 gxf6 17. Qg4+ Kh8 18. Qxb4 Rab8 19. Qh4+ Kg8 20. Qxf6 Kh7 21. Rae1 Rg8 22. Re5 Rg6 23. Rh5+ Kg8 24. Qh8# 1-0

[Event "Hannover-ch U10"]
[Site "Lehrte"]
[Date "2010.10.11"]
[Round "11"]
[White "Bozkurt, Emre"]
[Black "Sereda, Polina"]
[Result "0-1"]
[ECO "C47"]
[PlyCount "84"]
[EventDate "2010.10.09"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 e5 2. Nc3 Nc6 3. Nf3 Nf6 4. g3 Bb4 5. a3 Bxc3 6. dxc3 0-0 7. Bg5 d6 8. Bxf6 Qxf6 9. Bg2 Bg4 10. h3 Bxf3 11. Bxf3 Rad8 12. h4 Rfe8 13. Ke2 Re7 14. Rh2 Qe6 15. Ke1 Qc8 16. Bg4 Qb8 17. b4 Ree8 18. Bh5 Rf8 19. Rc1 Rd7 20. Bg4 Re7 21. Qe2 Qd8 22. Rd1 a6 23. c4 Na7 24. c5 Nc8 25. a4 Qe8 26. Bxc8 Qxc8 27. cxd6 cxd6 28. Rxd6 Qc7 29. Rd3 Rfe8 30. Rg2 Qc8 31. Rf3 Rd8 32. Rf5 Rdd7 33. Rg5 f6 34. Rg4 Qc6 35. Qf3 Qxa4 36. Qf5 Qa1+ 37. Ke2 Qd1+ 38. Ke3 Qe1+ 39. Kf3 Qc3+ 40. Ke2 Rd2+ 41. Ke1 Red7 42. Kf1 Qa1# 0-1

[Event "Hannover-ch U10"]
[Site "Lehrte"]
[Date "2010.10.11"]
[Round "9"]
[White "Kieback, Tom"]
[Black "Sereda, Polina"]
[Result "0-1"]
[ECO "C49"]
[PlyCount "56"]
[EventDate "2010.10.09"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. 0-0 0-0 6. d3 Bxc3 7. bxc3 d6 8. Bg5 Bg4 9. Bxc6 bxc6 10. Re1 Qe7 11. h3 Bh5 12. Bxf6 Qxf6 13. Rb1 d5 14. exd5 cxd5 15. c4 dxc4 16. dxc4 Qf5 17. Qc1 e4 18. Nd4 Qg6 19. Rb7 Rfd8 20. Nc6 Re8 21. Qd2 Bf3 22. g3 Qh5 23. Reb1 Qxh3 24. Ne7+ Kf8 25. Ng6+ Kg8 26. Ne7+ Kh8 27. Ng6+ hxg6 28. Rb8 Qg2# 0-1

[Event "Hannover-ch U10"]
[Site "Lehrte"]
[Date "2010.10.11"]
[Round "10"]
[White "Raymann, Lukas"]
[Black "Sereda, Polina"]
[Result "0-1"]
[ECO "A06"]
[PlyCount "26"]
[EventDate "2010.10.09"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. Nf3 d5 2. Nc3 Nf6 3. e3 Nc6 4. Bb5 Bd7 5. Ng5 e5 6. Nxd5 Nxd5 7. Qh5 Qe7 8. b3 0-0-0 9. Nxh7 g6 10. Qf3 Rxh7 11. 0-0 e4 12. Qe2 Qh4 13. g3 Qxh2# 0-1

[Event "Hannover-ch U10"]
[Site "Lehrte"]
[Date "2010.10.10"]
[Round "7"]
[White "Brockmeyer, Katharina"]
[Black "Sereda, Polina"]
[Result "0-1"]
[ECO "C48"]
[PlyCount "68"]
[EventDate "2010.10.09"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Be7 4. Nc3 Nf6 5. d3 0-0 6. Bg5 d6 7. 0-0 Bg4 8. g3 Nd4 9. Qd2 Nxf3+ 10. Kg2 Nxd2 11. Rad1 Bxd1 12. Rxd1 Ndxe4 13. dxe4 c6 14. Bc4 b5 15. f3 bxc4 16. g4 d5 17. exd5 cxd5 18. b3 d4 19. Ne2 d3 20. Nc3 Qd4 21. Na4 e4 22. c3 exf3+ 23. Kxf3 Qd5+ 24. Kf2 Ne4+ 25. Kg1 Bxg5 26. Nb2 Be3+ 27. Kg2 Nxc3+ 28. Kg3 Nxd1 29. Nxd1 f5 30. Nxe3 Qd6+ 31. Kg2 fxg4 32. bxc4 Qf6 33. Nd5 Qf3+ 34. Kg1 Qf1# 0-1

[Event "Hannover-ch U10"]
[Site "Lehrte"]
[Date "2010.10.10"]
[Round "5"]
[White "Klein, Jana"]
[Black "Sereda, Polina"]
[Result "0-1"]
[ECO "A00"]
[PlyCount "64"]
[EventDate "2010.10.09"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e3 e5 2. Nf3 Nc6 3. Bb5 Be7 4. 0-0 Nf6 5. Qe2 0-0 6. Nc3 d6 7. d3 Bg4 8. Bd2 Bxf3 9. Qxf3 Qd7 10. Rae1 Rad8 11. Ne4 Nxe4 12. Bc1 Ng5 13. Qh5 Rfe8 14. f4 exf4 15. Bd2 Rf8 16. Rf3 Nxf3+ 17. Kh1 Nxe1 18. Bxe1 a6 19. Qg5 Bxg5 20. h3 axb5 21. b3 fxe3 22. a4 bxa4 23. bxa4 e2 24. g4 Nd4 25. Ba5 Nxc2 26. Bb4 Nxb4 27. d4 Qc6+ 28. Kg1 Be3+ 29. Kh2 Rfe8 30. Kg3 e1N 31. Kh4 g5+ 32. Kg3 Qg2# 0-1

[Event "Hannover-ch U10"]
[Site "Lehrte"]
[Date "2010.10.10"]
[Round "6"]
[White "Sereda, Polina"]
[Black "Karnbach, Anthea"]
[Result "1-0"]
[ECO "C49"]
[PlyCount "101"]
[EventDate "2010.10.09"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. 0-0 0-0 6. d3 d6 7. Bg5 Bg4 8. Nd5 a6 9. Bxc6 bxc6 10. Nxf6+ gxf6 11. c3 Bc5 12. Bh4 Rb8 13. b3 Re8 14. Re1 Kf8 15. b4 Ba7 16. Bg3 f5 17. exf5 Bxf5 18. Bh4 Qd7 19. Qe2 Bg4 20. Qe4 Rb5 21. Qxh7 f6 22. Qxd7 Bxd7 23. Re4 f5 24. Re2 Rd5 25. Rd2 e4 26. dxe4 fxe4 27. Rxd5 cxd5 28. Ng5 Ke7 29. Nxe4+ Kf7 30. Ng5+ Kf8 31. Nh7+ Kg7 32. Nf6 Re2 33. Nxd7 Bb6 34. Nxb6 cxb6 35. Kf1 Rc2 36. Re1 Rxc3 37. Re7+ Kf8 38. g4 Rc4 39. h3 Rc1+ 40. Kg2 Rc2 41. g5 d4 42. g6 d3 43. g7+ Kg8 44. Kf3 d2 45. Ke2 d5 46. Rd7 Rxa2 47. Bf6 a5 48. Rd8+ Kh7 49. g8Q+ Kh6 50. Qg7+ Kh5 51. Rh8# 1-0

[Event "Hannover-ch U10"]
[Site "Lehrte"]
[Date "2010.10.10"]
[Round "8"]
[White "Sereda, Polina"]
[Black "Kobrin, Daniel"]
[Result "1-0"]
[ECO "C48"]
[PlyCount "55"]
[EventDate "2010.10.09"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 a6 5. Bxc6 bxc6 6. 0-0 Bb4 7. Nxe5 0-0 8. d3 Bxc3 9. bxc3 d6 10. Nf3 Bg4 11. Bg5 h6 12. Bh4 Bxf3 13. Qxf3 g5 14. Bg3 h5 15. d4 h4 16. e5 dxe5 17. dxe5 Nd7 18. e6 fxe6 19. Qxc6 hxg3 20. Qxe6+ Kh8 21. fxg3 Rxf1+ 22. Rxf1 Nc5 23. Qh6+ Kg8 24. h3 c6 25. Rf6 Ne4 26. Rg6+ Kf7 27. Qh7+ Kf8 28. Rg8# 1-0

[Event "Hannover-ch U10"]
[Site "Lehrte"]
[Date "2010.10.09"]
[Round "1"]
[White "Azizi, Siar"]
[Black "Sereda, Polina"]
[Result "0-1"]
[ECO "C20"]
[PlyCount "70"]
[EventDate "2010.10.09"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. f3 e5 2. e4 Nc6 3. Bb5 Nf6 4. Bxc6 dxc6 5. d3 Bd6 6. Bg5 Qe7 7. Ne2 Bd7 8. 0-0 0-0-0 9. d4 Rhe8 10. Nbc3 Bb4 11. Na4 c5 12. dxc5 Bxa4 13. b3 Rxd1 14. Rfxd1 Bxc5+ 15. Kh1 Bb5 16. Nc3 Bd4 17. Rac1 Bxc3 18. a4 Be2 19. Rg1 Bd4 20. Rge1 Ba6 21. c3 Bb6 22. Bh4 Rd8 23. g4 Qe6 24. g5 Nh5 25. g6 Re8 26. gxh7 Qh6 27. Red1 Qxh7 28. Rd2 Bc5 29. Rcd1 b6 30. Rd8+ Rxd8 31. Rxd8+ Kb7 32. b4 Qg6 33. bxc5 bxc5 34. Be7 Be2 35. Bxc5 Bxf3# 0-1

[Event "Hannover-ch U10"]
[Site "Lehrte"]
[Date "2010.10.09"]
[Round "3"]
[White "Ponhun Lopez, Daniel Alejandro"]
[Black "Sereda, Polina"]
[Result "1-0"]
[ECO "D02"]
[PlyCount "43"]
[EventDate "2010.10.09"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. Nf3 d5 2. d4 Nc6 3. g3 Nf6 4. Bg2 Bg4 5. 0-0 e6 6. Nc3 Bb4 7. Bd2 0-0 8. Bf4 Bxc3 9. bxc3 Bxf3 10. exf3 Qc8 11. Be5 Nxe5 12. dxe5 Nd7 13. f4 c6 14. Bh3 Nc5 15. Qd4 b6 16. f5 exf5 17. Rae1 Ne6 18. Qh4 Nc7 19. e6 Qxe6 20. Rxe6 Nxe6 21. Bxf5 Nc5 22. Qxh7# 1-0

[Event "Hannover-ch U10"]
[Site "Lehrte"]
[Date "2010.10.09"]
[Round "2"]
[White "Sereda, Polina"]
[Black "Gaedeken, Arne"]
[Result "0-1"]
[ECO "C46"]
[PlyCount "90"]
[EventDate "2010.10.09"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Bb4 4. Bb5 Bxc3 5. bxc3 a6 6. Bxc6 bxc6 7. Nxe5 d6 8. Nf3 Bg4 9. 0-0 Nf6 10. Qe2 Bxf3 11. Qxf3 0-0 12. d4 Re8 13. Re1 d5 14. Bg5 Qd6 15. Bxf6 gxf6 16. Qg4+ Kf8 17. exd5 Rxe1+ 18. Rxe1 cxd5 19. Re3 Qb6 20. Re1 Rb8 21. Qe2 Qb1 22. Kf1 Qxa2 23. Qe7+ Kg8 24. Qxc7 Rb1 25. Qd8+ Kg7 26. Rxb1 Qxb1+ 27. Ke2 Qxc2+ 28. Kf3 Qxc3+ 29. Kg4 Qxd4+ 30. f4 Qd1+ 31. Kg3 Qd3+ 32. Kh4 Qd4 33. g3 a5 34. Qxa5 Qd1 35. Qd8 d4 36. g4 d3 37. f5 d2 38. Kh5 Qc2 39. g5 d1Q+ 40. Kh4 Qc4+ 41. Kh3 Qxd8 42. Kg2 Qd2+ 43. Kh3 Qdd3+ 44. Kg2 Qcc2+ 45. Kg1 Qdd1# 0-1

[Event "Hannover-ch U10"]
[Site "Lehrte"]
[Date "2010.10.09"]
[Round "4"]
[White "Sereda, Polina"]
[Black "Wachtel, Noel"]
[Result "1-0"]
[ECO "B30"]
[PlyCount "27"]
[EventDate "2010.10.09"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "GER"]
[SourceTitle "EXT 2021"]
[Source "ChessBase"]
[SourceDate "2020.10.23"]
[SourceVersion "1"]
[SourceVersionDate "2020.10.23"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. Nc3 e5 4. Bb5 b6 5. 0-0 Bb7 6. d3 Be7 7. Be3 Nd4 8. Nxe5 Nf6 9. Bxd7+ Qxd7 10. Nxd7 Nxd7 11. Bxd4 cxd4 12. Ne2 Rc8 13. Nxd4 Nc5 14. b4 1-0

