[Event "GER-ch U10"]
[Site "Willingen"]
[Date "2024.05.25"]
[Round "11"]
[White "Liu, Jonas1"]
[Black "Katzenstein, Alexander"]
[Result "1-0"]
[ECO "B76"]
[WhiteElo "1630"]
[BlackElo "1275"]
[PlyCount "45"]
[EventDate "2024.05.19"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "CB27_2024"]
[SourceDate "2024.07.03"]
[SourceVersion "1"]
[SourceVersionDate "2024.07.03"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. f3 Bg7 7. Be3 0-0 8. Qd2 Nc6 9. 0-0-0 Nxd4 10. Bxd4 Be6 11. g4 a5 12. h4 a4 13. h5 Bd7 14. Be3 Rb8 15. Bh6 b5 16. Bxg7 Kxg7 17. hxg6 fxg6 18. Qh6+ Kf7 19. g5 Rh8 20. gxf6 exf6 21. Rxd6 Qc7 22. Rxf6+ Ke8 23. Qg7 1-0

[Event "GER-ch U10"]
[Site "Willingen"]
[Date "2024.05.24"]
[Round "10"]
[White "Katzenstein, Alexander"]
[Black "Loeffelholz, Jonas"]
[Result "1-0"]
[ECO "A18"]
[WhiteElo "1275"]
[BlackElo "1126"]
[PlyCount "63"]
[EventDate "2024.05.19"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "CB27_2024"]
[SourceDate "2024.07.03"]
[SourceVersion "1"]
[SourceVersionDate "2024.07.03"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 e6 3. e4 Bb4 4. e5 Bxc3 5. dxc3 Ne4 6. Bd3 Nc5 7. Be3 Nxd3+ 8. Qxd3 Nc6 9. Nf3 d6 10. Rd1 0-0 11. exd6 e5 12. d7 e4 13. Qxe4 Bxd7 14. 0-0 Re8 15. Qf4 Qc8 16. Qg3 Bg4 17. h3 Bf5 18. Nd4 Ne5 19. Nxf5 Qxf5 20. Bd4 f6 21. Rfe1 Nxc4 22. Qxc7 Nxb2 23. Rxe8+ Rxe8 24. Rd2 Qb5 25. Bxa7 Nd3 26. Bb6 Ne1 27. Rd8 Rxd8 28. Qxd8+ Kf7 29. Qc7+ Kg6 30. Qxb7 Qb1 31. Kh2 Qxa2 32. Qe4+ 1-0

[Event "GER-ch U10"]
[Site "Willingen"]
[Date "2024.05.24"]
[Round "9"]
[White "Zielke, Mika"]
[Black "Katzenstein, Alexander"]
[Result "1-0"]
[ECO "B76"]
[WhiteElo "1617"]
[BlackElo "1275"]
[PlyCount "107"]
[EventDate "2024.05.19"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "CB27_2024"]
[SourceDate "2024.07.03"]
[SourceVersion "1"]
[SourceVersionDate "2024.07.03"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. f3 Nc6 7. Be3 Bg7 8. Qd2 0-0 9. Nxc6 bxc6 10. g4 Qa5 11. Nb1 Qxd2+ 12. Nxd2 Nd7 13. c3 Nc5 14. Bxc5 dxc5 15. Nb3 Rb8 16. 0-0-0 Bh6+ 17. Kb1 f5 18. gxf5 gxf5 19. e5 Bf4 20. Bc4+ Kh8 21. e6 Bd6 22. Rde1 Rg8 23. Re2 Rb6 24. Rd1 Ba6 25. Na5 Rd8 26. Bxa6 Rxa6 27. Nc4 Bc7 28. Rxd8+ Bxd8 29. Re5 Kg7 30. Rxf5 Kg6 31. Rf7 h5 32. Ne5+ Kg5 33. Nd7 Ra4 34. Nxc5 Ra5 35. Nb7 Rd5 36. Nxd8 Rxd8 37. Rxe7 Kf6 38. Rd7 Rxd7 39. exd7 Ke7 40. Kc2 Kxd7 41. Kd3 Kd6 42. Ke4 Ke6 43. f4 Kf6 44. f5 a6 45. b4 h4 46. Kf4 h3 47. a4 Kf7 48. Kg5 Kg7 49. f6+ Kf7 50. Kf5 Kf8 51. Kg6 Kg8 52. f7+ Kf8 53. a5 Ke7 54. Kg7 1-0

[Event "GER-ch U10"]
[Site "Willingen"]
[Date "2024.05.23"]
[Round "8"]
[White "Katzenstein, Alexander"]
[Black "Seegebrecht, Johann"]
[Result "1-0"]
[ECO "B06"]
[WhiteElo "1275"]
[BlackElo "1421"]
[PlyCount "42"]
[EventDate "2024.05.19"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "CB27_2024"]
[SourceDate "2024.07.03"]
[SourceVersion "1"]
[SourceVersionDate "2024.07.03"]
[SourceQuality "1"]

1. d4 g6 2. e4 Bg7 3. Nc3 d6 4. f4 a6 5. a4 Nd7 6. Nf3 b6 7. b4 Bb7 8. Rb1 e5 9. fxe5 dxe5 10. Be3 Ne7 11. Bc4 0-0 12. Qd2 Re8 13. Bh6 Nc6 14. d5 Nd4 15. 0-0 Nxf3+ 16. Rxf3 Qh4 17. Rh3 Qf6 18. Rf1 Qd6 19. Bxg7 Kxg7 20. Qh6+ Kg8 21. Qxh7+ Kf8 1-0

[Event "GER-ch U10"]
[Site "Willingen"]
[Date "2024.05.22"]
[Round "7"]
[White "Katzenstein, Alexander"]
[Black "Krokhmal, Davyd"]
[Result "1-0"]
[ECO "D38"]
[WhiteElo "1275"]
[PlyCount "89"]
[EventDate "2024.05.19"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "CB27_2024"]
[SourceDate "2024.07.03"]
[SourceVersion "1"]
[SourceVersionDate "2024.07.03"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 Bb4 5. Bd2 Bxc3 6. Bxc3 0-0 7. e3 Qe7 8. c5 b6 9. Bb4 Qd8 10. cxb6 Re8 11. Bb5 Bd7 12. b7 Nc6 13. bxa8Q Qxa8 14. Bxc6 Bxc6 15. Rc1 Rb8 16. Ba3 Bb5 17. Rxc7 a6 18. Bc5 h6 19. Ne5 Rb7 20. Rxb7 Qxb7 21. a4 Bc4 22. Nxc4 dxc4 23. 0-0 Qxb2 24. Qb1 Qxb1 25. Rxb1 Nd5 26. Rc1 c3 27. e4 Nf4 28. Kf1 Nd3 29. Rxc3 Nxc5 30. Rxc5 f5 31. exf5 exf5 32. Rxf5 g6 33. Ra5 Kf7 34. Rxa6 h5 35. Rb6 g5 36. a5 Ke7 37. a6 Kd7 38. a7 Kc7 39. Rb1 Kd6 40. a8Q Ke6 41. Qe4+ Kd6 42. Rb6+ Kd7 43. Qe6+ Kc7 44. Qd6+ Kc8 45. Rb8# 1-0

[Event "GER-ch U10"]
[Site "Willingen"]
[Date "2024.05.22"]
[Round "6"]
[White "Roessling, Johannes"]
[Black "Katzenstein, Alexander"]
[Result "0-1"]
[ECO "B70"]
[WhiteElo "1578"]
[BlackElo "1275"]
[PlyCount "138"]
[EventDate "2024.05.19"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "CB27_2024"]
[SourceDate "2024.07.03"]
[SourceVersion "1"]
[SourceVersionDate "2024.07.03"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 g6 6. Bc4 Bg7 7. Be3 Nf6 8. Bb3 0-0 9. 0-0 Na5 10. Qd2 Nxb3 11. axb3 Ng4 12. Rfe1 Nxe3 13. Qxe3 Re8 14. Rad1 Bd7 15. Qg3 Be5 16. Qe3 a5 17. Nce2 a4 18. Ra1 axb3 19. Qxb3 Qc7 20. Ra3 Rxa3 21. Qxa3 Qc5 22. Qxc5 dxc5 23. Nf3 Bxb2 24. Rb1 Bb5 25. Rxb2 Bxe2 26. Rxb7 Ra8 27. h3 Ra1+ 28. Kh2 Bxf3 29. gxf3 Rc1 30. Rb2 e6 31. Kg3 c4 32. Kf4 Kg7 33. Ke3 c3 34. Ra2 Rh1 35. Ra3 Rxh3 36. Rxc3 h5 37. Rd3 Rh1 38. c4 Rc1 39. Kd4 h4 40. f4 Kh6 41. Rh3 g5 42. f5 exf5 43. exf5 Kh5 44. f3 g4 45. fxg4+ Kxg4 46. Re3 h3 47. Re2 Kg3 48. c5 h2 49. Rxh2 Kxh2 50. Kd5 Kg3 51. Kd6 Kg4 52. f6 Kf5 53. Ke7 Kg6 54. c6 Rxc6 55. Kf8 Kxf6 56. Ke8 Kg6 57. Kd7 Rc1 58. Kd6 f5 59. Ke5 Re1+ 60. Kf4 Rf1+ 61. Kg3 Kg5 62. Kg2 Rf4 63. Kg1 Ra4 64. Kf1 Kf4 65. Kf2 Ra2+ 66. Kf1 Ke3 67. Kg1 Kf3 68. Kh1 Kg3 69. Kg1 Ra1# 0-1

[Event "GER-ch U10"]
[Site "Willingen"]
[Date "2024.05.21"]
[Round "5"]
[White "Wessels, Keke"]
[Black "Katzenstein, Alexander"]
[Result "1-0"]
[ECO "A45"]
[WhiteElo "1207"]
[BlackElo "1275"]
[PlyCount "97"]
[EventDate "2024.05.19"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "CB27_2024"]
[SourceDate "2024.07.03"]
[SourceVersion "1"]
[SourceVersionDate "2024.07.03"]
[SourceQuality "1"]

1. d4 Nf6 2. Nc3 e6 3. e4 Bb4 4. f3 b6 5. Bd2 Bb7 6. a3 Be7 7. Bb5 a6 8. Bc4 d5 9. Bd3 dxe4 10. fxe4 Qxd4 11. Nf3 Qd8 12. 0-0 Bc5+ 13. Kh1 Nc6 14. b4 Bd6 15. Qe2 Ne5 16. Nxe5 Bxe5 17. Rad1 Qd6 18. g3 h5 19. Bf4 Bxf4 20. Bb5+ Bc6 21. Rxd6 Bxb5 22. Nxb5 Bxd6 23. e5 h4 24. Nxd6+ cxd6 25. gxh4 dxe5 26. Qg2 0-0 27. Rxf6 Rad8 28. h5 Rd1+ 29. Rf1 Rfd8 30. Rg1 Rxg1+ 31. Qxg1 Rd2 32. Qxb6 Rxc2 33. Qd8+ Kh7 34. Qd3+ Kh6 35. Qxc2 Kxh5 36. Qh7+ Kg4 37. Qxg7+ Kf4 38. Qxf7+ Ke3 39. Qxe6 e4 40. Qxa6 Kf3 41. Qe6 e3 42. Qxe3+ Kxe3 43. h4 Kd3 44. b5 Kc4 45. b6 Kc5 46. b7 Kb5 47. b8Q+ Ka6 48. a4 Ka5 49. Qb5# 1-0

[Event "GER-ch U10"]
[Site "Willingen"]
[Date "2024.05.20"]
[Round "3"]
[White "Egert, Niilo"]
[Black "Katzenstein, Alexander"]
[Result "1/2-1/2"]
[ECO "B13"]
[WhiteElo "1105"]
[BlackElo "1275"]
[PlyCount "104"]
[EventDate "2024.05.19"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "CB27_2024"]
[SourceDate "2024.07.03"]
[SourceVersion "1"]
[SourceVersionDate "2024.07.03"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. Bd3 Nc6 5. c3 Nf6 6. Bf4 g6 7. Nf3 Bg4 8. Nbd2 Bg7 9. 0-0 0-0 10. h3 Bxf3 11. Nxf3 Nd7 12. Qb3 e5 13. dxe5 Ndxe5 14. Nxe5 Bxe5 15. Qxb7 Bxf4 16. Qxc6 d4 17. Rfd1 dxc3 18. Qxc3 Qg5 19. Be4 Rac8 20. Qa3 Rc7 21. Qf3 Rfc8 22. h4 Qe5 23. g3 Bh6 24. b3 Rc1 25. Raxc1 Rxc1 26. Bd5 Rxd1+ 27. Qxd1 Qb2 28. Qf3 Qc1+ 29. Kh2 Qc7 30. a4 Qd7 31. Bc6 Qf5 32. Qxf5 gxf5 33. Bd7 f4 34. Kg2 fxg3 35. fxg3 Bd2 36. Kf3 Kg7 37. g4 h6 38. Ke4 Kf6 39. Kd5 Be1 40. h5 Kg5 41. Bf5 Kf6 42. Kc5 Bd2 43. b4 Ke7 44. b5 Be3+ 45. Kc6 Bb6 46. Kb7 Kd6 47. g5 Ke7 48. gxh6 Kf8 49. h7 Kg7 50. h6+ Kh8 51. a5 Bxa5 52. Kxa7 f6 1/2-1/2

[Event "GER-ch U10"]
[Site "Willingen"]
[Date "2024.05.20"]
[Round "4"]
[White "Katzenstein, Alexander"]
[Black "Elli, Emeric"]
[Result "0-1"]
[ECO "D37"]
[WhiteElo "1275"]
[BlackElo "1164"]
[PlyCount "142"]
[EventDate "2024.05.19"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "CB27_2024"]
[SourceDate "2024.07.03"]
[SourceVersion "1"]
[SourceVersionDate "2024.07.03"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 Be7 5. Bf4 0-0 6. e3 b6 7. cxd5 exd5 8. Bd3 Bb7 9. 0-0 c5 10. b3 Nbd7 11. Rc1 Ne4 12. Bxe4 dxe4 13. Nd2 f5 14. dxc5 Nxc5 15. Nc4 Nd3 16. Rc2 Bg5 17. Rd2 Bxf4 18. exf4 Qh4 19. g3 Qh3 20. f3 exf3 21. Rxf3 Bxf3 22. Qxf3 Nc5 23. Qd5+ Kh8 24. Ne5 Qh5 25. b4 Na6 26. b5 Nc5 27. Qc4 Rac8 28. Qd5 Qe8 29. Re2 Qe6 30. Qxe6 Nxe6 31. Nd5 Nd4 32. Rb2 Rc5 33. Nd7 Rxd5 34. Nxf8 Kg8 35. Kf2 Kxf8 36. Rd2 Ke7 37. Ke3 Rxb5 38. Kxd4 Kd6 39. Kc4+ Kc6 40. Rd6+ Kxd6 41. Kxb5 Kc7 42. Ka6 Kb8 43. h3 h6 44. g4 g6 45. gxf5 gxf5 46. h4 h5 47. a3 Ka8 48. a4 Kb8 49. Kb5 Kb7 50. Kc4 Kc6 51. Kd4 Kd6 52. Kc4 a6 53. Kd4 Ke6 54. Kc4 b5+ 55. axb5 axb5+ 56. Kxb5 Kd5 57. Kb6 Ke4 58. Kc6 Kxf4 59. Kd5 Kg4 60. Ke5 f4 61. Ke4 Kg3 62. Kf5 f3 63. Kg5 f2 64. Kxh5 f1Q 65. Kg5 Qf4+ 66. Kg6 Kxh4 67. Kh7 Qf6 68. Kg8 Qe7 69. Kh8 Kh5 70. Kg8 Kh6 71. Kh8 Qg7# 0-1

[Event "GER-ch U10"]
[Site "Willingen"]
[Date "2024.05.19"]
[Round "2"]
[White "Katzenstein, Alexander"]
[Black "Romberg, Moritz"]
[Result "1/2-1/2"]
[ECO "D20"]
[WhiteElo "1275"]
[BlackElo "1054"]
[PlyCount "102"]
[EventDate "2024.05.19"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "CB27_2024"]
[SourceDate "2024.07.03"]
[SourceVersion "1"]
[SourceVersionDate "2024.07.03"]
[SourceQuality "1"]

1. d4 d5 2. c4 dxc4 3. e4 Nc6 4. Nf3 Bg4 5. d5 Ne5 6. Be2 Nxf3+ 7. Bxf3 Bxf3 8. Qxf3 Nf6 9. Bg5 h6 10. Bxf6 exf6 11. 0-0 Bd6 12. Nd2 b5 13. a4 Bb4 14. Rfd1 a6 15. Qe3 0-0 16. Nb1 Re8 17. b3 cxb3 18. Qxb3 Rxe4 19. Nd2 Bxd2 20. Rxd2 bxa4 21. Qd3 f5 22. f3 Re5 23. Rxa4 Qd6 24. Ra1 Qc5+ 25. Kf1 a5 26. d6 Rd8 27. Rc2 Qxd6 28. Qxd6 cxd6 29. Rc6 g5 30. Ra6 f4 31. R6xa5 f6 32. Ra6 Kf7 33. Ra7+ Ke6 34. Rh7 d5 35. Rxh6 Rd6 36. Kf2 d4 37. Rd1 d3 38. h4 Re2+ 39. Kf1 Kf5 40. Rxd3 Rd2 41. Rxd6 Rxd6 42. hxg5 Kxg5 43. Rh8 f5 44. Rg8+ Rg6 45. Rxg6+ Kxg6 46. Kf2 Kh5 47. g3 fxg3+ 48. Kxg3 Kg5 49. f4+ Kh5 50. Kh3 Kg6 51. Kh4 Kh6 1/2-1/2

[Event "GER-ch U10"]
[Site "Willingen"]
[Date "2024.05.19"]
[Round "1"]
[White "Stoyanov, Victor"]
[Black "Katzenstein, Alexander"]
[Result "1-0"]
[ECO "B14"]
[WhiteElo "1652"]
[BlackElo "1275"]
[PlyCount "55"]
[EventDate "2024.05.19"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "CB27_2024"]
[SourceDate "2024.07.03"]
[SourceVersion "1"]
[SourceVersionDate "2024.07.03"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. c4 Nf6 5. Nc3 e6 6. Nf3 Bb4 7. Bd2 Nc6 8. a3 Bxc3 9. Bxc3 Bd7 10. c5 0-0 11. Bd3 h6 12. b4 a6 13. 0-0 Na7 14. a4 b5 15. a5 Nc6 16. Re1 Re8 17. Qc2 Qc7 18. Re2 Re7 19. Rae1 Rae8 20. h3 Kh8 21. Ne5 Bc8 22. Nxc6 Qxc6 23. Bd2 Qc7 24. Qc1 Ng8 25. Bf4 Qd7 26. Bd6 Nf6 27. Bxe7 Rxe7 28. Qf4 1-0

