[Event "VIE-chT"]
[Site "Hanoi"]
[Date "2023.04.23"]
[Round "9"]
[White "Nguyen, Tung Quan"]
[Black "Nguyen, Duc Hieu"]
[Result "1-0"]
[ECO "B52"]
[WhiteElo "1434"]
[BlackElo "1982"]
[PlyCount "56"]
[EventDate "2023.04.18"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "VIE"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. 0-0 Nc6 6. c3 Nf6 7. Re1 e6 8. d4 cxd4 9. cxd4 d5 10. e5 Ne4 11. Nc3 Bb4 12. Nxe4 Bxe1 13. Nd6+ Ke7 14. Qxe1 h6 15. b3 g5 16. h3 Raf8 17. b4 f5 18. b5 Nb8 19. Nxg5 f4 20. Nf3 Rhg8 21. Ba3 Kd8 22. Rc1 Qg7 23. Qa5+ b6 24. Rc8+ Ke7 25. Qxa7+ Nd7 26. Nf5+ Kf7 27. Qxd7+ Kg6 28. Qxe6+ Kh7 1-0

[Event "VIE-chT"]
[Site "Hanoi"]
[Date "2023.04.22"]
[Round "8"]
[White "Nguyen, Duc Hieu"]
[Black "Nguyen, Truong An Khang"]
[Result "1-0"]
[ECO "D35"]
[WhiteElo "1982"]
[BlackElo "1407"]
[PlyCount "73"]
[EventDate "2023.04.18"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "VIE"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5 exd5 5. Bg5 c6 6. e3 h6 7. Bh4 Be7 8. Bd3 0-0 9. Nge2 Nbd7 10. 0-0 Re8 11. a3 Ne4 12. Bxe7 Qxe7 13. Qc2 Ndf6 14. h3 Bf5 15. Nxe4 dxe4 16. Bc4 Qd7 17. Ng3 Be6 18. Rac1 Bxc4 19. Qxc4 Nd5 20. Ne2 Kh8 21. Nc3 Nc7 22. Na4 Ne6 23. Nc5 Nxc5 24. Qxc5 a6 25. Qb6 f5 26. Rfd1 Re7 27. Rc5 Rf8 28. Rdc1 f4 29. d5 f3 30. dxc6 Qe6 31. g4 Ref7 32. Qb4 Qe7 33. c7 Rc8 34. Qxb7 Rff8 35. Rf5 Qh4 36. Rxf8+ Rxf8 37. c8Q 1-0

[Event "VIE-chT"]
[Site "Hanoi"]
[Date "2023.04.22"]
[Round "7"]
[White "Nguyen, Xuan An"]
[Black "Nguyen, Duc Hieu"]
[Result "1/2-1/2"]
[ECO "B23"]
[WhiteElo "1045"]
[BlackElo "1982"]
[PlyCount "81"]
[EventDate "2023.04.18"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "VIE"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 a6 3. f4 e6 4. Nf3 b5 5. d4 Bb7 6. d5 exd5 7. Nxd5 d6 8. c4 b4 9. b3 Be7 10. Bb2 Nf6 11. Nxf6+ Bxf6 12. e5 dxe5 13. Qxd8+ Bxd8 14. fxe5 0-0 15. 0-0-0 Bc7 16. Bd3 Re8 17. Rhe1 a5 18. Ng5 h6 19. Be4 Bxe4 20. Nxe4 Bxe5 21. Nxc5 Nc6 22. Bxe5 Nxe5 23. Rd5 f6 24. h3 Kf7 25. Ne4 Kf8 26. Rf1 Rad8 27. Nd6 Re7 28. Kb2 Red7 29. c5 Nf7 30. Rfd1 Nxd6 31. cxd6 Ra8 32. Rc5 Ra6 33. Rdd5 Raxd6 34. Rxd6 Rxd6 35. Rxa5 Rd2+ 36. Kb1 Rxg2 37. Rb5 Rg1+ 38. Kc2 Rg2+ 39. Kb1 Rg1+ 40. Kb2 Rg2+ 41. Ka1 1/2-1/2

[Event "VIE-chT"]
[Site "Hanoi"]
[Date "2023.04.21"]
[Round "6"]
[White "Nguyen, Duc Hieu"]
[Black "Luong, Duy Loc"]
[Result "0-1"]
[ECO "D10"]
[WhiteElo "1982"]
[BlackElo "1767"]
[PlyCount "66"]
[EventDate "2023.04.18"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "VIE"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. Bf4 dxc4 5. e4 b5 6. f3 Bb7 7. a4 a6 8. Nge2 e6 9. Bg5 Be7 10. Ng3 Nbd7 11. Be2 0-0 12. 0-0 Qb6 13. e5 Nxe5 14. a5 Qa7 15. Be3 Rad8 16. Qc1 Ng6 17. Rd1 c5 18. dxc5 Bxc5 19. Bxc5 Qxc5+ 20. Kh1 Rxd1+ 21. Qxd1 Qc7 22. Qc2 Rd8 23. Kg1 Nf4 24. Nf1 Qc5+ 25. Kh1 Qf2 26. Bd3 Nxd3 27. Qxf2 Nxf2+ 28. Kg1 Nd3 29. Rb1 Nd5 30. Ne4 N5f4 31. Nfg3 Bxe4 32. Nxe4 f5 33. Ng3 b4 0-1

[Event "VIE-chT"]
[Site "Hanoi"]
[Date "2023.04.20"]
[Round "4"]
[White "Nguyen, Duc Hieu"]
[Black "Do, Huy Hung"]
[Result "1-0"]
[ECO "D35"]
[WhiteElo "1982"]
[BlackElo "1962"]
[PlyCount "61"]
[EventDate "2023.04.18"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "VIE"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5 exd5 5. Bg5 Be7 6. e3 h6 7. Bh4 Be6 8. Bd3 Nbd7 9. Nge2 c5 10. Bb5 c4 11. h3 a6 12. Bxd7+ Nxd7 13. Bxe7 Qxe7 14. a4 0-0 15. 0-0 Rab8 16. Nf4 Nf6 17. Nh5 b5 18. Nxf6+ Qxf6 19. axb5 axb5 20. Ra5 Qg6 21. Kh2 Qg5 22. Nxb5 Qd8 23. Qa1 Qd7 24. Nc3 Rxb2 25. Rxd5 Qb7 26. Rc5 Qb3 27. Rb5 Qxc3 28. Qxb2 Qxb2 29. Rxb2 Bf5 30. Rb5 Bd3 31. Rc1 1-0

[Event "VIE-chT"]
[Site "Hanoi"]
[Date "2023.04.20"]
[Round "5"]
[White "Pham, Anh Tuan"]
[Black "Nguyen, Duc Hieu"]
[Result "0-1"]
[ECO "D36"]
[WhiteElo "1932"]
[BlackElo "1982"]
[PlyCount "21"]
[EventDate "2023.04.18"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "VIE"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. Bg5 Be7 5. Nc3 0-0 6. e3 c6 7. Qc2 Nbd7 8. cxd5 exd5 9. Bd3 h6 10. Bh4 Nb6 11. 0-0 0-1

[Event "VIE-chT"]
[Site "Hanoi"]
[Date "2023.04.19"]
[Round "3"]
[White "Nguyen, Duc Huan"]
[Black "Nguyen, Duc Hieu"]
[Result "1/2-1/2"]
[ECO "C50"]
[WhiteElo "1963"]
[BlackElo "1982"]
[PlyCount "37"]
[EventDate "2023.04.18"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "VIE"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. 0-0 Nf6 5. d3 h6 6. Re1 d6 7. h3 0-0 8. Be3 Bb6 9. Nc3 Be6 10. Bb3 Re8 11. Nd5 Bxd5 12. Bxd5 Nxd5 13. exd5 Ne7 14. c4 c6 15. dxc6 Nxc6 16. Bxb6 Qxb6 17. b3 Nd4 18. Nxd4 Qxd4 19. Qe2 1/2-1/2

[Event "VIE-chT"]
[Site "Hanoi"]
[Date "2023.04.18"]
[Round "1"]
[White "Dinh, Nho Kiet"]
[Black "Nguyen, Duc Hieu"]
[Result "1-0"]
[ECO "D35"]
[WhiteElo "2209"]
[BlackElo "1982"]
[PlyCount "85"]
[EventDate "2023.04.18"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "VIE"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5 exd5 5. Bg5 Nbd7 6. e3 c6 7. Bd3 Bd6 8. Nge2 Qc7 9. h3 0-0 10. 0-0 h6 11. Bh4 b6 12. Rc1 a6 13. f3 c5 14. dxc5 Bxc5 15. Nd4 b5 16. Kh1 Qb6 17. Bf5 Bb7 18. a4 b4 19. a5 Qd6 20. Na4 Ba7 21. Qd2 Rfe8 22. Rfe1 Bb8 23. f4 Bc7 24. Bxf6 Nxf6 25. Nc5 Bc8 26. Bxc8 Rexc8 27. Nf5 Qd8 28. Qd4 Bxa5 29. Nb7 Rxc1 30. Rxc1 Qb6 31. Nxa5 Qxa5 32. Nxh6+ Kf8 33. Nf5 Re8 34. Kh2 Qd8 35. Rc6 Re6 36. Qc5+ Kg8 37. Rc8 Qxc8 38. Qxc8+ Kh7 39. Qc5 g6 40. Nd4 Rxe3 41. Nf3 Re8 42. Ng5+ Kg7 43. Qc7 1-0

[Event "VIE-chT"]
[Site "Hanoi"]
[Date "2023.04.18"]
[Round "2"]
[White "Nguyen, Duc Hieu"]
[Black "Nguyen, Van Thanh"]
[Result "0-1"]
[ECO "E90"]
[WhiteElo "1982"]
[BlackElo "2362"]
[PlyCount "91"]
[EventDate "2023.04.18"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "VIE"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 0-0 6. Bd3 e5 7. d5 a5 8. a4 Na6 9. 0-0 Nh5 10. h3 Nc5 11. Bc2 f5 12. Be3 f4 13. Bxc5 dxc5 14. Ne1 Nf6 15. Nd3 Qe7 16. f3 g5 17. Nf2 h5 18. Qe2 Kh8 19. Rfd1 Rg8 20. Nb5 Ne8 21. Qd3 Bf8 22. Rd2 Ra6 23. Qc3 Rh6 24. Bd1 Nd6 25. Qxa5 Nxc4 26. Qc3 Nxd2 27. Qxd2 g4 28. fxg4 hxg4 29. Bxg4 Bxg4 30. Nxg4 Rxg4 31. hxg4 Qh4 32. Qc3 Qh2+ 33. Kf2 Bg7 34. g5 Qh4+ 35. Ke2 Qxg5 36. Qf3 c6 37. Nc3 c4 38. Rd1 Bf8 39. Rf1 Rh2 40. dxc6 bxc6 41. a5 Bc5 42. Na4 Rxg2+ 43. Ke1 Bb4+ 44. Kd1 Bxa5 45. Qh3+ Kg7 46. Qd7+ 0-1

[Event "VIE-chT"]
[Site "Hanoi"]
[Date "2022.04.02"]
[Round "9.26"]
[White "Nguyen, Duc Hieu"]
[Black "Nguyen, Tran Huy Khanh"]
[Result "0-1"]
[ECO "B35"]
[PlyCount "83"]
[EventDate "2022.03.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "VIE"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 g6 3. d4 cxd4 4. Nxd4 Bg7 5. Be3 Nc6 6. Nc3 Nf6 7. Bc4 Qa5 8. 0-0 0-0 9. h3 a6 10. a3 b5 11. Ba2 Bb7 12. f3 Rfd8 13. Qe2 Qc7 14. Rfd1 Rac8 15. Qf2 Qb8 16. Nxc6 dxc6 17. Ba7 Qa8 18. Bb6 Rd7 19. Qe2 Qb8 20. e5 Rxd1+ 21. Rxd1 Nd5 22. Bd4 e6 23. Bxd5 cxd5 24. Re1 Bf8 25. Qe3 Qc7 26. Kh1 Qc6 27. Re2 Qc4 28. Rd2 Bc5 29. Bxc5 Qxc5 30. Qf4 Qc4 31. Qf6 b4 32. axb4 Qxb4 33. Qg5 Qxb2 34. Ne2 Qb4 35. c3 Qb6 36. Rd4 Rc4 37. Rxc4 dxc4 38. Nd4 Bd5 39. Kh2 a5 40. Qe7 Qb8 41. Nb5 Qxe5+ 42. Kh1 0-1

[Event "VIE-chT"]
[Site "Hanoi"]
[Date "2022.04.01"]
[Round "8.27"]
[White "Nguyen, Doan Nhat Thien"]
[Black "Nguyen, Duc Hieu"]
[Result "1/2-1/2"]
[ECO "C45"]
[PlyCount "69"]
[EventDate "2022.03.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "VIE"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. d4 exd4 5. Nxd4 Nxd4 6. Qxd4 d6 7. Qd1 a6 8. h3 Be7 9. Bd3 0-0 10. 0-0 c6 11. Re1 Re8 12. Bf4 d5 13. exd5 Nxd5 14. Nxd5 Qxd5 15. Be4 Qxd1 16. Raxd1 Be6 17. b3 Bb4 18. Bd2 Bxd2 19. Rxd2 Bd5 20. Rde2 Bxe4 21. Rxe4 Rxe4 22. Rxe4 Kf8 23. Kf1 Rd8 24. Ke2 f5 25. Rc4 Kf7 26. Ke3 Re8+ 27. Kd2 a5 28. g4 Rd8+ 29. Ke2 f4 30. Rc3 Ke6 31. f3 Rd5 32. a4 c5 33. Rd3 Re5+ 34. Kd2 b6 35. Rd8 1/2-1/2

[Event "VIE-chT"]
[Site "Hanoi"]
[Date "2022.04.01"]
[Round "7.27"]
[White "Nguyen, Duc Hieu"]
[Black "Le, Khac Hoang Long"]
[Result "1/2-1/2"]
[ECO "C55"]
[PlyCount "45"]
[EventDate "2022.03.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "VIE"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 h6 4. Nc3 Nf6 5. d3 Bb4 6. Bd2 d6 7. h3 Bd7 8. 0-0 0-0 9. Nd5 Bxd2 10. Nxf6+ Qxf6 11. Qxd2 a6 12. a4 a5 13. Qe2 b6 14. Bd5 Rab8 15. Bxc6 Bxc6 16. c4 Rfe8 17. Nh2 Bd7 18. b3 c5 19. Ng4 Bxg4 20. Qxg4 Qg6 21. Qd7 Red8 22. Qc6 Qf6 23. Qd5 1/2-1/2

[Event "VIE-chT"]
[Site "Hanoi"]
[Date "2022.03.31"]
[Round "6.27"]
[White "Lim, Tuan Sang"]
[Black "Nguyen, Duc Hieu"]
[Result "1-0"]
[ECO "D47"]
[PlyCount "91"]
[EventDate "2022.03.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "VIE"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nf3 e6 4. Nc3 Nf6 5. e3 Be7 6. Bd3 dxc4 7. Bxc4 0-0 8. 0-0 Nbd7 9. e4 b6 10. Bf4 Bb7 11. Re1 h6 12. Rc1 Rc8 13. a3 a5 14. h3 Re8 15. Qd2 b5 16. Bd3 a4 17. Ne5 Nb6 18. Be3 Bd6 19. Rcd1 Nbd7 20. Nxd7 Nxd7 21. e5 Be7 22. Bc2 Nb6 23. Qd3 g6 24. Bxh6 Bg5 25. Bxg5 Qxg5 26. Ne4 Qe7 27. Nf6+ Kg7 28. Nxe8+ Rxe8 29. Qg3 Nc4 30. Rb1 Rd8 31. Qg4 Rd7 32. h4 Qe8 33. h5 Kh6 34. hxg6 fxg6 35. Qh4+ Kg7 36. Qf6+ Kh7 37. Re4 Rg7 38. Rh4+ Kg8 39. Qg5 Kf7 40. Rh6 Qe7 41. Bxg6+ Kg8 42. Qh5 Kf8 43. Rh8+ Rg8 44. Qf3+ Kg7 45. Rh7+ Kxg6 46. Qh5# 1-0

[Event "VIE-chT"]
[Site "Hanoi"]
[Date "2022.03.30"]
[Round "5.23"]
[White "Nguyen, Duc Hieu"]
[Black "Hoang, Thi Bao Tram"]
[Result "0-1"]
[ECO "B13"]
[BlackElo "2269"]
[PlyCount "48"]
[EventDate "2022.03.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "VIE"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. Nf3 Nc6 5. Be3 Nf6 6. h3 Qb6 7. Qc1 Bf5 8. Nbd2 Nb4 9. Nh4 Nxc2+ 10. Kd1 Nxe3+ 11. fxe3 Rc8 12. Nc4 Qe6 13. Nxf5 Qxf5 14. Be2 dxc4 15. Rf1 Qd7 16. Qc2 e5 17. Rxf6 gxf6 18. Bg4 Qc7 19. Bxc8 Qxc8 20. Qa4+ Qc6 21. Qxa7 Qxg2 22. Qb8+ Kd7 23. Rc1 Qf1+ 24. Kc2 Qd3# 0-1

[Event "VIE-chT"]
[Site "Hanoi"]
[Date "2022.03.29"]
[Round "3.26"]
[White "Nguyen, Duc Hieu"]
[Black "Le, Khac Hoang Tuan"]
[Result "0-1"]
[ECO "B13"]
[PlyCount "70"]
[EventDate "2022.03.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "VIE"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. Nf3 Nf6 5. Be3 Bg4 6. Nbd2 e6 7. a3 Ne4 8. Be2 Nxd2 9. Qxd2 Be7 10. h3 Bxf3 11. Bxf3 0-0 12. 0-0 Nc6 13. Rac1 Qb6 14. c3 Na5 15. Rb1 Rfc8 16. Be2 Nc4 17. Bxc4 Rxc4 18. Rfc1 Qb3 19. Qc2 Qxc2 20. Rxc2 Rac8 21. Rbc1 b5 22. b3 R4c6 23. b4 h6 24. Bd2 a5 25. Rb1 axb4 26. axb4 Rc4 27. Rbc1 Bf6 28. Kf1 e5 29. Ke2 exd4 30. cxd4 Bxd4 31. f3 Kf8 32. Kd3 Bf6 33. Be3 Rc3+ 34. Rxc3 Rxc3+ 35. Ke2 d4 0-1

[Event "VIE-chT"]
[Site "Hanoi"]
[Date "2022.03.28"]
[Round "2.23"]
[White "Dang, Ngoc Minh"]
[Black "Nguyen, Duc Hieu"]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "1556"]
[PlyCount "53"]
[EventDate "2022.03.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "VIE"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. Bf4 e6 4. e3 c6 5. Bd3 Nbd7 6. Nbd2 g6 7. c3 Bg7 8. h4 b6 9. Qc2 Bb7 10. 0-0-0 0-0 11. Rdg1 Rc8 12. g4 c5 13. h5 c4 14. hxg6 fxg6 15. Bxg6 hxg6 16. Qxg6 Qe8 17. Qg5 Nh7 18. Qh4 Qg6 19. Qg3 b5 20. Bd6 Rf7 21. g5 Rf5 22. Nh4 Qf7 23. g6 Qf6 24. gxh7+ Kxh7 25. Nxf5+ Kg8 26. Qxg7+ Qxg7 27. Rxg7# 1-0

[Event "VIE-chT"]
[Site "Hanoi"]
[Date "2022.03.28"]
[Round "1.21"]
[White "Duong, Thuong Cong"]
[Black "Nguyen, Duc Hieu"]
[Result "1-0"]
[ECO "C25"]
[WhiteElo "1952"]
[PlyCount "55"]
[EventDate "2022.03.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "VIE"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. Nge2 Nge7 6. f4 d6 7. d3 Bg4 8. h3 Bxe2 9. Nxe2 Qd7 10. c3 0-0-0 11. b4 a6 12. a4 Nb8 13. 0-0 c6 14. fxe5 Rhf8 15. exd6 Qxd6 16. d4 f6 17. b5 Qd7 18. Rb1 g5 19. Ba3 Rf7 20. Nc1 h6 21. Nd3 Qe8 22. Nc5 axb5 23. axb5 Nd7 24. Nxb7 Kxb7 25. bxc6+ Kxc6 26. Qa4+ Kc7 27. Qa7+ Kc6 28. Qb7# 1-0

[Event "VIE-ch U09"]
[Site "Hai Phong"]
[Date "2018.07.12"]
[Round "8"]
[White "Nguyen, Duc Hieu"]
[Black "Thai, Ho Tan Minh"]
[Result "0-1"]
[ECO "C50"]
[WhiteElo "1933"]
[BlackElo "1945"]
[PlyCount "114"]
[EventDate "2018.07.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "VIE"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. Nc3 d6 5. h3 Nf6 6. d3 Qe7 7. Bg5 Be6 8. Nd5 Bxd5 9. Bxd5 h6 10. Bh4 g5 11. Bg3 Nxd5 12. exd5 Nd4 13. Nxd4 Bxd4 14. c3 Bb6 15. Qd2 0-0-0 16. 0-0-0 f5 17. f3 f4 18. Bf2 Bxf2 19. Qxf2 b6 20. Rhe1 Qf7 21. c4 Rhe8 22. Qc2 Qf5 23. Qa4 Kb8 24. Re2 Qd7 25. Qa6 Qc8 26. Qxc8+ Kxc8 27. b4 h5 28. b5 Kd7 29. a4 Ke7 30. Rg1 Kf6 31. g4 hxg4 32. hxg4 Rh8 33. Rgg2 Rh1+ 34. Kb2 Rdh8 35. Kb3 R8h3 36. Ref2 Ke7 37. Kc3 Re1 38. Rh2 Rxh2 39. Rxh2 Rf1 40. Rh3 Kd7 41. Kb2 Kc8 42. Kb3 Rf2 43. Kc3 Kb7 44. Kb3 a5 45. Kc3 Ra2 46. Kb3 Ra1 47. Rh5 Rf1 48. Rh3 Kc8 49. Rh8+ Kb7 50. Rh3 Rb1+ 51. Kc2 Rb4 52. Rh5 Rxa4 53. Rxg5 Ra2+ 54. Kb3 Rf2 55. Rf5 Rxf3 56. Kc2 Rg3 57. g5 a4 0-1

[Event "VIE-ch U09"]
[Site "Hai Phong"]
[Date "2018.07.11"]
[Round "7"]
[White "Ha, Quoc Khanh"]
[Black "Nguyen, Duc Hieu"]
[Result "0-1"]
[ECO "C54"]
[WhiteElo "1930"]
[BlackElo "1933"]
[PlyCount "74"]
[EventDate "2018.07.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "VIE"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. d3 h6 5. c3 Nf6 6. a4 a5 7. Qb3 0-0 8. 0-0 Bb6 9. Nh4 Nxe4 10. Nf3 Nf6 11. Be3 Ba7 12. Nbd2 d5 13. Bb5 Be6 14. d4 e4 15. Ne1 Bb6 16. Nc2 Qd6 17. Be2 Ne7 18. Na3 Nf5 19. Nb5 Qd7 20. c4 dxc4 21. Bxc4 c6 22. Nc3 Bxd4 23. Bxd4 Nxd4 24. Qa2 Bxc4 25. Qxc4 Rfe8 26. Rad1 Rad8 27. Nb3 Re6 28. Nc5 Qe7 29. Nxe6 Nxe6 30. Nxe4 Nxe4 31. Qxe4 Qf6 32. Rxd8+ Qxd8 33. h3 Qd2 34. Qb1 Qb4 35. Qa2 Qc5 36. Qa3 Qg5 37. Qb3 Nf4 0-1

[Event "VIE-ch U09"]
[Site "Hai Phong"]
[Date "2018.07.10"]
[Round "6"]
[White "Nguyen, Phu Trong"]
[Black "Nguyen, Duc Hieu"]
[Result "1-0"]
[ECO "C21"]
[WhiteElo "1942"]
[BlackElo "1933"]
[PlyCount "71"]
[EventDate "2018.07.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "VIE"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. e4 e5 2. d4 exd4 3. Bc4 c5 4. Nf3 Nc6 5. 0-0 g6 6. Re1 d6 7. h3 Bg7 8. Ng5 Nh6 9. c3 0-0 10. Nf3 dxc3 11. Nxc3 Kh8 12. Bf4 Ne5 13. Nxe5 dxe5 14. Be3 Be6 15. Bxe6 fxe6 16. Bxc5 Re8 17. Qb3 b6 18. Be3 Qf6 19. Nb5 Qe7 20. Rac1 Rec8 21. Rxc8+ Rxc8 22. Rd1 Nf7 23. Qa4 Bh6 24. Bxh6 Nxh6 25. Qxa7 Qxa7 26. Nxa7 Ra8 27. Rd7 Ng8 28. a3 Nf6 29. Rf7 Nxe4 30. Nc6 Ng5 31. Rc7 e4 32. Ne5 Ra5 33. Nd7 Rb5 34. a4 Nf7 35. Nf6 Nd6 36. Rxh7# 1-0

[Event "VIE-ch U09"]
[Site "Hai Phong"]
[Date "2018.07.09"]
[Round "4"]
[White "Bui, Tran Minh Khang"]
[Black "Nguyen, Duc Hieu"]
[Result "1-0"]
[ECO "D06"]
[WhiteElo "1917"]
[BlackElo "1933"]
[PlyCount "76"]
[EventDate "2018.07.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "VIE"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. d4 d5 2. Bf4 Bf5 3. e3 a6 4. c4 e6 5. Nc3 Nf6 6. Nf3 Nc6 7. Qb3 Rb8 8. Be2 Be7 9. 0-0 0-0 10. Nh4 Bg6 11. Nxg6 fxg6 12. Bf3 Na5 13. Qc2 Nxc4 14. b3 Nb6 15. Ne2 Bd6 16. Rac1 c6 17. Rfd1 Bxf4 18. Nxf4 Qe7 19. Qc5 Qxc5 20. dxc5 e5 21. Ne6 Rfe8 22. Nc7 Re7 23. cxb6 e4 24. Be2 Nd7 25. Bg4 Ne5 26. Bh3 Kf7 27. Ne6 Rxe6 28. Bxe6+ Kxe6 29. a4 Rf8 30. h3 Nd3 31. Rc2 h6 32. f3 Nb4 33. Rf2 Nd3 34. Rff1 Nb4 35. fxe4 Rxf1+ 36. Rxf1 dxe4 37. Rf8 Nc2 38. Kf2 Na1 1-0

[Event "VIE-ch U09"]
[Site "Hai Phong"]
[Date "2018.07.09"]
[Round "5"]
[White "Nguyen, Duc Hieu"]
[Black "Ta, Anh Khoi"]
[Result "1-0"]
[ECO "C50"]
[WhiteElo "1933"]
[BlackElo "1923"]
[PlyCount "88"]
[EventDate "2018.07.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "VIE"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Bc5 4. Bc4 Nf6 5. 0-0 0-0 6. d3 h6 7. Be3 Bxe3 8. fxe3 Ng4 9. Qd2 d6 10. h3 Nf6 11. d4 exd4 12. exd4 Re8 13. Rae1 Bd7 14. d5 Ne5 15. Nxe5 Rxe5 16. Bb3 Qe7 17. Re2 Nxe4 18. Nxe4 Rxe4 19. Rxe4 Qxe4 20. Qc3 c6 21. dxc6 Bxc6 22. Qd2 Rf8 23. Re1 Qg6 24. c3 Bd7 25. Kh2 Kh7 26. Re7 Bc8 27. Qf2 d5 28. Re1 Qd6+ 29. Kh1 Be6 30. Bc2+ Kg8 31. Qxa7 Qa6 32. Qxa6 bxa6 33. a3 Rb8 34. b4 Rc8 35. Rc1 Kh8 36. Bd3 d4 37. c4 Kg8 38. c5 Ra8 39. Be4 Rc8 40. Bb7 Rb8 41. Bxa6 Kf8 42. Rd1 Bc8 43. Bxc8 Rxc8 44. Rxd4 Rxc5 1-0

[Event "VIE-ch U09"]
[Site "Hai Phong"]
[Date "2018.07.08"]
[Round "3"]
[White "Nguyen, Duc Hieu"]
[Black "Nguyen, Khanh Lam"]
[Result "0-1"]
[ECO "B22"]
[WhiteElo "1933"]
[BlackElo "1966"]
[PlyCount "76"]
[EventDate "2018.07.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "VIE"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Nf3 c5 5. c3 Nf6 6. Be3 Qb6 7. Qc2 Be6 8. Be2 Be7 9. 0-0 0-0 10. Nbd2 Nc6 11. Rab1 Rac8 12. Qb3 h6 13. h3 Rfd8 14. Rfe1 Rb8 15. Qxb6 axb6 16. Rbd1 c4 17. b3 b5 18. Bf4 Ra8 19. Ra1 b4 20. Rec1 b5 21. Ne5 Nxe5 22. Bxe5 Nd7 23. Bf4 Rdc8 24. cxb4 Bxb4 25. bxc4 bxc4 26. Rcb1 Ba3 27. Nf1 c3 28. Ng3 Bb2 29. Rf1 Bxa1 30. Rxa1 c2 31. Bd3 Rc3 32. Bf1 Rb3 33. Rc1 Rxa2 34. Be3 Nb6 35. Ne2 Nc4 36. Bf4 Rb1 37. h4 Raa1 38. Kh2 Nb2 0-1

[Event "VIE-ch U09"]
[Site "Hai Phong"]
[Date "2018.07.07"]
[Round "1"]
[White "Nguyen, Tran Huy Khanh"]
[Black "Nguyen, Duc Hieu"]
[Result "1-0"]
[ECO "D10"]
[WhiteElo "1959"]
[BlackElo "1933"]
[PlyCount "75"]
[EventDate "2018.07.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "VIE"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. Bf4 Bf5 5. e3 e6 6. cxd5 cxd5 7. Nf3 Nbd7 8. Rc1 a6 9. Ne5 Rc8 10. a3 Nxe5 11. Bxe5 Bd6 12. Bxd6 Qxd6 13. Ne4 Qd8 14. Nxf6+ gxf6 15. Rxc8 Qxc8 16. Be2 0-0 17. 0-0 Bg6 18. Bd3 Qd7 19. Bxg6 fxg6 20. Qd2 Rc8 21. Rc1 Kg7 22. h3 Rxc1+ 23. Qxc1 Qc6 24. Qxc6 bxc6 25. Kf1 Kf7 26. Ke2 Ke7 27. Kd3 Kd6 28. Kc3 c5 29. h4 h5 30. Kb3 Kc6 31. Ka4 cxd4 32. exd4 Kb6 33. Kb4 a5+ 34. Ka4 Ka6 35. b4 axb4 36. Kxb4 Kb6 37. a4 Kb7 38. Ka5 1-0

