[Event "GER-ch U25-B"]
[Site "Willingen"]
[Date "2023.06.03"]
[Round "9"]
[White "Duchstein, Anna"]
[Black "Derhay, Davyd"]
[Result "0-1"]
[ECO "D02"]
[WhiteElo "1568"]
[BlackElo "1376"]
[PlyCount "106"]
[EventDate "2023.05.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 214 Extra"]
[Source "ChessBase"]
[SourceDate "2023.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.07.31"]
[SourceQuality "1"]

1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. d4 Nf6 5. 0-0 Bf5 6. c4 e6 7. Nc3 Nb4 8. Bg5 Be7 9. dxc5 Nc2 10. Rc1 dxc4 11. Nh4 Nd4 12. Qa4+ Nd7 13. Nxf5 Nxf5 14. Bxe7 Nxe7 15. Bxb7 Rb8 16. c6 Nc5 17. Qxc4 Qd6 18. Rfd1 Qe5 19. Nb5 Nxb7 20. cxb7 0-0 21. Rd7 Nd5 22. Qc5 Qxe2 23. Nc7 Nb6 24. Rdd1 Rxb7 25. Nb5 Na4 26. Qc4 Qxc4 27. Rxc4 Nxb2 28. Nd6 Rd7 29. Rb1 Nxc4 30. Nxc4 Rd4 31. Ne5 Ra4 32. Rb2 g5 33. h3 Kg7 34. Kg2 f6 35. Nd7 Rc8 36. Nb8 Rc7 37. Re2 Rc8 38. Rb2 Rc7 39. Re2 Kf7 40. Rd2 Ra5 41. Rb2 Ke7 42. g4 Kd8 43. Kg3 Kc8 44. Kg2 Rb7 45. Rxb7 Kxb7 46. Nd7 Kc7 47. Nxf6 Rxa2 48. Nxh7 Ra5 49. Nf6 Re5 50. f3 a5 51. Ne4 Rxe4 52. fxe4 a4 53. h4 a3 0-1

[Event "GER-ch U25-B"]
[Site "Willingen"]
[Date "2023.06.02"]
[Round "8"]
[White "Derhay, Davyd"]
[Black "Oblender, Rudi"]
[Result "1-0"]
[ECO "C50"]
[WhiteElo "1376"]
[BlackElo "1391"]
[PlyCount "51"]
[EventDate "2023.05.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 214 Extra"]
[Source "ChessBase"]
[SourceDate "2023.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.07.31"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 g6 4. d3 Bg7 5. Ng5 Nh6 6. Nc3 Ne7 7. f4 c6 8. fxe5 Bxe5 9. 0-0 d5 10. exd5 Nxd5 11. Qe2 f6 12. Nf3 Nf7 13. d4 Bg4 14. dxe5 Nxe5 15. Nxd5 cxd5 16. Bb5+ Kf7 17. Nxe5+ Kg7 18. Nxg4 h5 19. Nxf6 Rf8 20. Bg5 Qb6+ 21. Kh1 d4 22. Qe7+ Rf7 23. Ne8+ Rxe8 24. Qxf7+ Kh8 25. Qxe8+ Kh7 26. Rf7# 1-0

[Event "GER-ch U25-B"]
[Site "Willingen"]
[Date "2023.06.01"]
[Round "7"]
[White "Aguike, Chidera"]
[Black "Derhay, Davyd"]
[Result "0-1"]
[ECO "C56"]
[WhiteElo "1449"]
[BlackElo "1376"]
[PlyCount "46"]
[EventDate "2023.05.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 214 Extra"]
[Source "ChessBase"]
[SourceDate "2023.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.07.31"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. 0-0 dxc3 7. e5 Ng4 8. Bxf7+ Kxf7 9. Qd5+ Ke8 10. Qxc5 cxb2 11. Bxb2 Qe7 12. Qc4 Qe6 13. Qc3 b6 14. Ng5 Qf5 15. f4 h6 16. Nh3 Kd8 17. Rd1 Bb7 18. Qe1 Kc8 19. a3 Na5 20. Nd2 Bc6 21. Bc3 Nb7 22. Nb3 Qc2 23. Nd4 Qxg2# 0-1

[Event "GER-ch U25-B"]
[Site "Willingen"]
[Date "2023.05.31"]
[Round "5"]
[White "Bergmann, Lennart"]
[Black "Derhay, Davyd"]
[Result "1-0"]
[ECO "C54"]
[WhiteElo "1515"]
[BlackElo "1376"]
[PlyCount "37"]
[EventDate "2023.05.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 214 Extra"]
[Source "ChessBase"]
[SourceDate "2023.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.07.31"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d3 d6 6. 0-0 0-0 7. h3 h6 8. Nbd2 a6 9. b4 Ba7 10. Re1 b5 11. Bb3 Nh5 12. Nf1 Qf6 13. Be3 Nf4 14. Ng3 h5 15. Bxf4 exf4 16. Nxh5 Qxc3 17. Rc1 Qxb4 18. Rxc6 Bb6 19. Qa1 1-0

[Event "GER-ch U25-B"]
[Site "Willingen"]
[Date "2023.05.31"]
[Round "6"]
[White "Derhay, Davyd"]
[Black "Claussen, Alexander"]
[Result "0-1"]
[ECO "C01"]
[WhiteElo "1376"]
[BlackElo "1430"]
[PlyCount "58"]
[EventDate "2023.05.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 214 Extra"]
[Source "ChessBase"]
[SourceDate "2023.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.07.31"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Bd3 Bd6 5. Ne2 Nf6 6. 0-0 Be6 7. Bf4 c6 8. Re1 Qc7 9. Bg3 Nbd7 10. c3 0-0-0 11. b4 Bg4 12. Nd2 h5 13. a4 Bxg3 14. fxg3 h4 15. Nf3 hxg3 16. Nxg3 Rxh2 17. Kxh2 Nh5 18. Kg1 Qxg3 19. Re3 Nf4 20. Qd2 Rh8 21. Ra2 Bxf3 22. Rxf3 Qh2+ 23. Kf1 Qh1+ 24. Kf2 Qxg2+ 25. Ke3 Re8+ 26. Kxf4 g5+ 27. Kf5 Qxf3+ 28. Kxg5 Rg8+ 29. Kh4 Qg4# 0-1

[Event "GER-ch U25-B"]
[Site "Willingen"]
[Date "2023.05.30"]
[Round "4"]
[White "Derhay, Davyd"]
[Black "Kraus, Johanna"]
[Result "1-0"]
[ECO "B01"]
[WhiteElo "1376"]
[BlackElo "1408"]
[PlyCount "63"]
[EventDate "2023.05.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 214 Extra"]
[Source "ChessBase"]
[SourceDate "2023.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.07.31"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. d4 c5 5. dxc5 e5 6. Be3 Nf6 7. a3 a6 8. b4 Qc7 9. Na4 Nbd7 10. Nf3 Be7 11. Be2 0-0 12. c4 Rd8 13. Qc2 a5 14. 0-0 h6 15. h3 Qc6 16. Rfe1 Nf8 17. Nb6 Ra7 18. Nxe5 Qe8 19. c6 Be6 20. c7 Rc8 21. Nxc8 Qxc8 22. Bxa7 Qxc7 23. Bf3 b6 24. Nc6 Bd6 25. c5 Bh2+ 26. Kh1 bxc5 27. Bxc5 N8d7 28. Nxa5 Bf4 29. Nc6 Ne5 30. Nxe5 Bxe5 31. Rad1 Qc8 32. Rxe5 1-0

[Event "GER-ch U25-B"]
[Site "Willingen"]
[Date "2023.05.29"]
[Round "3"]
[White "Kroemer, Emanuel"]
[Black "Derhay, Davyd"]
[Result "1-0"]
[ECO "D10"]
[WhiteElo "1496"]
[BlackElo "1376"]
[PlyCount "115"]
[EventDate "2023.05.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 214 Extra"]
[Source "ChessBase"]
[SourceDate "2023.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.07.31"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. cxd5 cxd5 4. Bf4 Bf5 5. Nc3 e6 6. Nf3 Bd6 7. Bxd6 Qxd6 8. e3 Nf6 9. Be2 0-0 10. 0-0 Nc6 11. Nh4 Bg6 12. Nxg6 hxg6 13. Qd2 a6 14. f3 b5 15. Rac1 Nd7 16. Rfd1 Nb6 17. b3 Rfd8 18. Bd3 Rac8 19. Bb1 b4 20. Ne2 a5 21. e4 dxe4 22. fxe4 Nxd4 23. Rxc8 Nxc8 24. Nxd4 e5 25. Qg5 exd4 26. Qxa5 Ne7 27. e5 Qd5 28. Qxb4 Qxe5 29. Re1 Nc6 30. Rxe5 Nxb4 31. Kf2 d3 32. Re1 Nc6 33. Rd1 Ne5 34. h3 Ra8 35. Ke3 g5 36. Rd2 g6 37. Bxd3 Nxd3 38. Kxd3 Ra3 39. Kc4 f5 40. Kb4 Ra8 41. a4 Kg7 42. a5 Kh6 43. g4 Kg7 44. Rd6 f4 45. a6 f3 46. Ka5 f2 47. Rd1 Rf8 48. Rf1 Rf3 49. a7 Rxb3 50. Ka4 Rb2 51. Ka3 Rb7 52. a8Q Kh6 53. Qh8+ Rh7 54. Qf8+ Rg7 55. Rxf2 Kh7 56. Rf7 Rxf7 57. Qxf7+ Kh8 58. Qb7 1-0

[Event "GER-ch U25-B"]
[Site "Willingen"]
[Date "2023.05.28"]
[Round "2"]
[White "Derhay, Davyd"]
[Black "Prokscha, Charlotte"]
[Result "1-0"]
[ECO "B44"]
[WhiteElo "1376"]
[BlackElo "1367"]
[PlyCount "91"]
[EventDate "2023.05.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 214 Extra"]
[Source "ChessBase"]
[SourceDate "2023.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.07.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. c4 g6 6. Be3 Bg7 7. Nc3 Nge7 8. Be2 0-0 9. 0-0 d5 10. exd5 exd5 11. c5 Nf5 12. Nxf5 Bxf5 13. Qxd5 Qxd5 14. Nxd5 Bxb2 15. Rad1 Rac8 16. Bf3 Bg7 17. Bf4 Kh8 18. Bd6 Rfe8 19. Nc7 Red8 20. g4 Bc2 21. Rd2 Ba4 22. Bd5 Kg8 23. Rc1 Bh6 24. f4 Bf8 25. Rc4 Bb5 26. Nxb5 a6 27. Nc7 Bxd6 28. cxd6 Rxd6 29. Bxf7+ Kxf7 30. Rxd6 Rxc7 31. f5 gxf5 32. gxf5 Re7 33. Rc2 Ne5 34. Rf2 Ng4 35. Rf4 h5 36. f6 Re1+ 37. Kg2 Re2+ 38. Kg3 Ne5 39. Rb6 Rxa2 40. Rxb7+ Kg6 41. f7 Nxf7 42. Rbxf7 Ra3+ 43. Kh4 Ra4 44. R7f6+ Kg7 45. Rxa4 Kxf6 46. Rxa6+ 1-0

[Event "GER-ch U25-B"]
[Site "Willingen"]
[Date "2023.05.28"]
[Round "1"]
[White "Vollmar, Timo"]
[Black "Derhay, Davyd"]
[Result "1-0"]
[ECO "C54"]
[WhiteElo "1817"]
[BlackElo "1376"]
[PlyCount "59"]
[EventDate "2023.05.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 214 Extra"]
[Source "ChessBase"]
[SourceDate "2023.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.07.31"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. cxd4 Bb4+ 7. Bd2 Bxd2+ 8. Nbxd2 d5 9. exd5 Nxd5 10. Qb3 Nce7 11. 0-0 0-0 12. Rfe1 c6 13. Rad1 Qc7 14. Ne5 Be6 15. Ne4 Bf5 16. Qg3 Kh8 17. Nxf7+ Rxf7 18. Qxc7 Nxc7 19. Bxf7 Ned5 20. Nd6 Bd7 21. Nxb7 Rf8 22. Bxd5 Nxd5 23. Nc5 Bf5 24. Re5 g6 25. Rde1 Nf6 26. h3 Rb8 27. g4 Bc2 28. g5 Ng8 29. b3 Bf5 30. Re8 1-0

