[Event "HSK Oster Open 2025"]
[Site "HSK Schachzentrum"]
[Date "2025.04.18"]
[Round "1.1"]
[White "Fellberg, Justus"]
[Black "Colpe, Malte"]
[Result "0-1"]

1. e4 e6 2. De2 c5 3. Sf3 Sc6 4. g3 Le7 5. e5 d5 6. exd6 Lxd6 7. Lg2 Sge7 8. c3 O-O 9. O-O b6 10. Sa3 Lb7 11. Sc2 Sf5 12. d4 cxd4 13. Sfxd4 Scxd4 14. Sxd4 Sxd4 15. cxd4 Dd7 16. Le3 Le7 17. Tfd1 Tfd8 18. Lxb7 Dxb7 19. Tac1 Lf6 20. Dg4 Dd5 21. b3 h5 22. De2 h4 23. Df1 Df5 24. h3 hxg3 25. fxg3 Dg6 26. Df2 Td5 27. Kh2 Tad8 28. Td2 a5 29. Tc4 De4 30. Df4 Db1 31. Df2 Dg6 32. Tc6 b5 33. Tc5 b4 34. Txd5 Txd5 35. Tc2 De4 36. Tc5 Kh7 37. Txd5 Dxd5 38. Dc2+ Kg8 39. Dc8+ Ld8 40. Dc2 g6 41. Dg2 Dd7 42. Da8 Kg7 43. De4 Lf6 44. Df4 Db5 45. Dh6+ Kg8 46. Df4 Lg7 47. Df2 Dd3 48. Kg2 Db1 49. h4 f5 50. Dd2 Kf7 51. Lf2 Lf6 52. De2 Lg7 53. h5 g5 54. De3 Lf6 55. De2 g4 56. h6 Dc1 57. Db5 Dxh6 58. Dxa5 Dd2 59. Dc7+ Le7 60. Dc4 Dxa2 61. Dd3 Da8+ 62. Kg1 Dd5 63. De3 Kg6 64. Dd3 Lf6 65. De3 Dc6 66. Df4 Dc2 67. Db8 Dd1+ 68. Kh2 Dxb3 69. De8+ Kh7 70. Df7+ Lg7 71. Dh5+ Kg8 72. De8+ Lf8 73. Dg6+ Kh8 74. Dh5+ Kg7 75. Dg5+ Kf7 76. Dh5+ Ke7 77. Dh7+ Ke8 78. Dc7 Dd5 79. Dc8+ Kf7 80. Dc7+ Le7 81. Db8 Df3 82. Kg1 b3 83. d5 Dxd5 84. Dh8 Dd1+ 85. Kh2 Dd2 86. Dh5+ Kg7 87. De8 Dxf2+ 88. Kh1 Dc5 0-1

[Event "HSK Oster Open 2025"]
[Site "HSK Schachzentrum"]
[Date "2025.04.18"]
[Round "2.24"]
[White "Mkrtchyan, Nona"]
[Black "Fellberg, Justus"]
[Result "0-1"]

1. e4 Nc6 2. d4 d5 3. e5 Bf5 4. Bb5 e6 5. Ne2 Ne7 6. Bg5 h6 7. Bxc6+ bxc6
8. Bh4 Qb8 9. b3 Bh7 10. Nd2 Nf5 11. Bg3 c5 12. Nf3 Qb6 13. Bf4 cxd4 14. Nfxd4
Bb4+ 15. Kf1 Nxd4 16. Nxd4 Bc3 17. Be3 Bxa1 18. Qxa1 O-O 19. c3 c5 20. Nf3 Rfd8
21. Kg1 Qb5 22. h3 a5 23. Nd2 a4 24. Kh2 Qb8 25. f4 d4 26. cxd4 cxd4 27. Bxd4
Qb4 28. Bc3 Qxf4+ 29. Kg1 Rxd2 30. Bxd2 Qxd2 31. Qf1 Qe3+ 32. Kh2 Qxe5+ 33. g3
Qb2+ 34. Kg1 Rc8 35. Rh2 Qd4+

[Event "HSK Oster Open 2025"]
[Site "HSK Schachzentrum"]
[Date "2025.04.19"]
[Round "3.12"]
[White "Fellberg, Justus"]
[Black "Fabig, Holger"]
[Result "1/2-1/2"]

1. e4 e6 2. Qe2 d5 3. exd5 Qxd5 4. Nc3 Qd8 5. Nf3 Nf6 6. g3 c5 7. Bg2 Nc6
8. d3 Be7 9. O-O O-O 10. Bf4 Re8 11. Rad1 Nd5 12. Qd2 Nxf4 13. Qxf4 Qb6 14. Qc4
Bd7 15. d4 Na5 16. Qd3 Bc6 17. b3 Rad8 18. d5 Bxd5 19. Nxd5 Rxd5 20. Qe2 Red8
21. Rxd5 Rxd5 22. Rd1 Rxd1+ 23. Qxd1 Qc7 24. Qd3 Nc6 25. a3 h6 26. h4 a6 27. a4
Qd6 28. Qxd6 Bxd6 29. Kf1 f5 30. Ke2 Kf7 31. Nd2 e5 32. Bxc6 bxc6 33. Nc4 Bc7
34. Ke3 g5 35. hxg5 hxg5 36. Nb2 Ke6 37. Nd3 Bd6 38. Nb2 e4 39. Nc4 Bc7 40. Nb2
Kd5 41. Nc4 f4+ 42. gxf4 Bxf4+ 43. Ke2 Kd4 44. Na5 Kc3 45. Kd1 g4 46. Nxc6 e3
47. fxe3 g3 48. Ke2 Bxe3 49. Kxe3 Kxc2 50. b4 cxb4 51. Nxb4+ 1/2-1/2

[Event "HSK Oster Open 2025"]
[Site "HSK Schachzentrum"]
[Date "2025.04.19"]
[Round "4.20"]
[White "Pothast, Laurenz"]
[Black "Fellberg, Justus"]
[Result "1-0"]

1. e4 d5 2. exd5 Nf6 3. d4 Nxd5 4. c4 Nb6 5. Nf3 Bg4 6. c5 Nd5 7. Qb3 b6
8. Ne5 1-0

[Event "HSK Oster Open 2025"]
[Site "HSK Schachzentrum"]
[Date "2025.04.20"]
[Round "5.27"]
[White "Fellberg, Justus"]
[Black "Pavlov, Dmitriy"]
[Result "1-0"]

1. e4 e6 2. Qe2 d5 3. exd5 Qxd5 4. Nc3 Qd8 5. Nf3 Nc6 6. g3 Nf6 7. Bg2 Bd6
8. O-O O-O 9. d4 Ne7 10. b3 c6 11. Bb2 Ned5 12. a4 Nxc3 13. Bxc3 Re8 14. Rad1
Qc7 15. Rfe1 b6 16. Bb2 Bb7 17. Ne5 Nd7 18. f4 Nxe5 19. fxe5 Bf8 20. c4 Rad8
21. Qg4 Rd7 22. Re3 Red8 23. Red3 g6 24. h4 h5 25. Qf4 Bg7 26. Be4 Kh7 27. Qf3
Rg8 28. Qxh5+ Bh6 29. Bc1 1-0

[Event "HSK Oster Open 2025"]
[Site "HSK Schachzentrum"]
[Date "2025.04.20"]
[Round "6.21"]
[White "Majewski, Nico"]
[Black "Fellberg, Justus"]
[Result "0-1"]

1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. c4 c6 6. Nc3 d5 7. cxd5 cxd5
8. d3 Nc6 9. Bg5 d4 10. Bxf6 Bxf6 11. Ne4 Bg7 12. Rb1 Qb6 13. b4 Bf5 14. Ned2
a6 15. Nc4 Qd8 16. a3 b5 17. Ncd2 Rc8 18. Nb3 a5 19. Nc5 axb4 20. axb4 Qb6
21. Nh4 Rfd8 22. Nxf5 gxf5 23. Qd2 Ne5 24. Ra1 Qf6 25. Ra6 Rd6 26. Rxd6 Qxd6
27. Ra1 Rb8 28. Ra6 Rb6 29. Ra8+ Bf8 30. Qa2 Kg7 31. Qa5 e6 32. f4 Ng6 33. Nd7
Qxd7 34. Qxb6 Bxb4 35. Ra7 Qe8 36. Bc6 Qf8 37. Qxb5 Bd2 38. Be8 Be3+ 39. Kg2
Ne7 40. Qd7 Kf6 41. g4 fxg4 42. Qd6 h6 43. Qe5+ Kg6 44. f5+ Kh7 45. fxe6 fxe6
46. Bg6+ Kxg6 47. Qxe6+ Kh5 48. Qe5+ Bg5 49. h4 gxh3+ 50. Kg1 Qc8 51. Kh2 Qg4
52. Qe4 Qxe4 53. dxe4 Kg4 54. Rd7 Bf4+ 55. Kh1 Nc6 56. Rg7+ Bg5 57. Rg6 Ne5
58. Rd6 Be3 59. Rd5 Kf4 60. Kh2 Kg4 61. Kh1 Kf4 62. Kh2 Kxe4 63. Rd8 Ng6
64. Re8+ Kf5 65. Kxh3 Nf4+ 66. Kg3 Nxe2+ 67. Kf3 Nc3 68. Rf8+ Ke5 69. Re8+ Kd5
70. Rd8+ Kc4 71. Re8 Bg5 72. Rc8+ Kd3 73. Ra8 Kc2 0-1

[Event "HSK Oster Open 2025"]
[Site "HSK Schachzentrum"]
[Date "2025.04.21"]
[Round "7.15"]
[White "Fellberg, Justus"]
[Black "Rudolph, Max"]
[Result "1-0"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Be3 c6 5. h3 Nbd7 6. f4 Qa5 7. Qd2 Bg7 8. Nf3
e5 9. Bd3 exd4 10. Nxd4 Nc5 11. O-O O-O 12. Nb3 Qb4 13. Nxc5 dxc5 14. a3 Qa5
15. Rab1 Rd8 16. Qf2 Nd7 17. e5 Qc7 18. Ne4 b6 19. Bc4 Nf8 20. Qh4 Be6 21. Bxe6
fxe6 22. Rbd1 Rxd1 23. Rxd1 Qf7 24. g4 a6 25. Rd6 Ra7 26. Qe1 Qe8 27. b4 cxb4
28. axb4 Rb7 29. Qc3 c5 30. bxc5 bxc5 31. Qxc5 Rb1+ 32. Kf2 Qb5 33. Qxb5 axb5
34. c3 Rb2+ 35. Kf3 h6 36. Rb6 g5 37. Bd4 gxf4 38. Nf6+ Kh8 39. Rb8 Rb3
40. Kxf4 Bxf6 41. Rxf8+ 1-0

