[Event "VIE-chT"]
[Site "Hanoi"]
[Date "2023.04.23"]
[Round "9"]
[White "Hoang, Tan Vinh"]
[Black "Chau, Van Khai Hoan"]
[Result "0-1"]
[ECO "D17"]
[WhiteElo "1922"]
[BlackElo "1987"]
[PlyCount "123"]
[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 dxc4 4. a4 Nf6 5. Nf3 Bf5 6. Ne5 e6 7. f3 Bb4 8. e4 Bg6 9. Bxc4 Nbd7 10. Nd3 Be7 11. Be3 0-0 12. 0-0 a5 13. Qe2 Qc7 14. Bf4 Qb6 15. Be3 Qc7 16. Bf4 Qd8 17. Rad1 Nb6 18. Ne5 Nxc4 19. Qxc4 Qb6 20. Kh1 Rfd8 21. Rfe1 Qb4 22. h3 Nh5 23. Bh2 Bh4 24. Re2 Ng3+ 25. Bxg3 Bxg3 26. Na2 Qxc4 27. Nxc4 Bc7 28. e5 Rd7 29. Red2 b5 30. axb5 cxb5 31. Ne3 Rad8 32. f4 Be4 33. Nc3 Bc6 34. Nb1 Bb6 35. Nc2 b4 36. b3 Bd5 37. Rd3 Be4 38. R3d2 Kf8 39. Kh2 h5 40. g4 h4 41. Re2 Bf3 42. Red2 Bxd1 43. Rxd1 Bxd4 44. Nxd4 Rxd4 45. Rf1 Re4 46. g5 g6 47. Rc1 Re2+ 48. Kh1 Kg7 49. f5 exf5 50. Rf1 Rxe5 51. Rc1 Re2 52. Rf1 Rd3 53. Rc1 Rxh3+ 54. Kg1 Rxb3 55. Kh1 Reb2 56. Rg1 Rxb1 57. Rxb1 Rxb1+ 58. Kg2 a4 59. Kf2 a3 60. Ke2 a2 61. Kd2 a1Q 62. Kc2 0-1

[Event "VIE-chT"]
[Site "Hanoi"]
[Date "2023.04.22"]
[Round "8"]
[White "Chau, Van Khai Hoan"]
[Black "Nguyen, Xuan An"]
[Result "0-1"]
[ECO "A85"]
[WhiteElo "1987"]
[BlackElo "1045"]
[PlyCount "83"]
[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 f5 2. c4 Nf6 3. Nc3 e6 4. f3 Bb4 5. e3 Bxc3+ 6. bxc3 0-0 7. Bd3 d6 8. Ne2 e5 9. 0-0 Re8 10. Ng3 e4 11. Bc2 c6 12. f4 b6 13. a4 g6 14. Bb3 Kh8 15. Rf2 Ng4 16. Rfa2 a5 17. h3 Qh4 18. Nf1 Nf6 19. c5 d5 20. Ba3 b5 21. Bc1 b4 22. cxb4 axb4 23. Bd2 Na6 24. Rb2 Rg8 25. Qe1 Qh6 26. h4 Qg7 27. Qg3 Nh5 28. Qh3 Nxc5 29. Bc2 Nxf4 30. exf4 Qxd4+ 31. Qe3 Qxb2 32. Qxc5 Qxa1 33. Be3 Qg7 34. Bd4 Bb7 35. Bxg7+ Rxg7 36. Qxb4 Rd7 37. Qd4+ Kg8 38. Bb3 Rc8 39. Qe5 Rdc7 40. Ne3 Re7 41. Qf6 Rf7 42. Qd6 0-1

[Event "VIE-chT"]
[Site "Hanoi"]
[Date "2023.04.22"]
[Round "7"]
[White "Nguyen, Hoang Dang Huy"]
[Black "Chau, Van Khai Hoan"]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "1696"]
[BlackElo "1987"]
[PlyCount "143"]
[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. Nf3 d5 2. g3 Nf6 3. Bg2 e6 4. 0-0 b6 5. c4 Bb7 6. Ne5 Bd6 7. d4 0-0 8. Nc3 c6 9. e4 Nxe4 10. Nxe4 dxe4 11. Bxe4 Qc7 12. Nd3 Nd7 13. b3 c5 14. Bxb7 Qxb7 15. Ba3 Qc7 16. dxc5 Nxc5 17. Nxc5 Bxc5 18. Bb2 Rfd8 19. Qg4 Bf8 20. Rad1 Rxd1 21. Rxd1 Rd8 22. Rd4 Rxd4 23. Qxd4 Qd6 24. Kf1 Qxd4 25. Bxd4 f5 26. Ke2 Kf7 27. Kd3 Bb4 28. h3 g6 29. f3 Bd6 30. g4 e5 31. Be3 h5 32. Kc3 Kf6 33. b4 e4 34. g5+ Ke6 35. fxe4 fxe4 36. c5 bxc5 37. bxc5 Be5+ 38. Kc4 a6 39. a3 Bb2 40. a4 Be5 41. Bd2 Bb2 42. Bf4 Bg7 43. c6 e3 44. c7 Kd7 45. Kd3 e2 46. Kxe2 Bc3 47. Kd3 Ba5 48. Ke4 Bc3 49. Kd5 Bb4 50. Kc4 Ba3 51. Kd5 h4 52. Ke4 Bb4 53. Kd5 Ba3 54. c8Q+ Kxc8 55. Ke6 Kb7 56. Kf7 Kb6 57. Kxg6 Ka5 58. Be5 Kxa4 59. Kf7 Bc1 60. g6 Bh6 61. g7 Bxg7 62. Kxg7 Kb5 63. Kg6 Kc5 64. Kg5 Kd5 65. Ba1 Ke6 66. Kxh4 Kf7 67. Kg5 a5 68. h4 a4 69. h5 a3 70. h6 a2 71. h7 Kf8 72. h8Q+ 1-0

[Event "VIE-chT"]
[Site "Hanoi"]
[Date "2023.04.21"]
[Round "6"]
[White "Chau, Van Khai Hoan"]
[Black "Nguyen, Thi Phuong Thao"]
[Result "0-1"]
[ECO "D27"]
[WhiteElo "1987"]
[BlackElo "2022"]
[PlyCount "138"]
[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 dxc4 3. Nf3 Nf6 4. e3 e6 5. Bxc4 a6 6. 0-0 c5 7. Nc3 b5 8. Be2 Bb7 9. a3 Nbd7 10. Qc2 Rc8 11. dxc5 Bxc5 12. b4 Bd6 13. Qb3 Qc7 14. Bb2 Bxf3 15. Bxf3 Bxh2+ 16. Kh1 Ne5 17. Rac1 Qb8 18. Ne4 Rxc1 19. Nxf6+ gxf6 20. Rxc1 Nxf3 21. gxf3 Be5 22. Bxe5 fxe5 23. Qc3 Ke7 24. Qc7+ Kf6 25. Qxb8 Rxb8 26. Rc6 Ra8 27. Rc7 Kg6 28. Re7 Rc8 29. Ra7 Rc6 30. Kg2 h6 31. Kg3 h5 32. Kh3 f5 33. Kg3 Kf6 34. Kg2 f4 35. e4 h4 36. Kh2 Rc2 37. Kg1 h3 38. Rxa6 h2+ 39. Kxh2 Rxf2+ 40. Kg1 Rxf3 41. Ra5 Re3 42. Kf2 Rxe4 43. Rxb5 Re3 44. a4 e4 45. Rc5 Ra3 46. Rc2 Rxa4 47. Rb2 Ra6 48. b5 Rb6 49. Rb4 Kf5 50. Rb1 e5 51. Rb4 Ke6 52. Rxe4 Rxb5 53. Ra4 Rb2+ 54. Kf3 Rb3+ 55. Kf2 Kf5 56. Ra5 Ke6 57. Ra6+ Kd5 58. Ra8 Kd4 59. Rd8+ Ke4 60. Rd2 f3 61. Ra2 Kf4 62. Rc2 e4 63. Rc4 Rb2+ 64. Kf1 Kg3 65. Rc1 Rh2 66. Kg1 f2+ 67. Kf1 Rh1+ 68. Ke2 Rxc1 69. Ke3 f1Q 0-1

[Event "VIE-chT"]
[Site "Hanoi"]
[Date "2023.04.20"]
[Round "4"]
[White "Chau, Van Khai Hoan"]
[Black "Bui, Trong Hao"]
[Result "0-1"]
[ECO "D45"]
[WhiteElo "1987"]
[BlackElo "2207"]
[PlyCount "104"]
[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. e3 Nf6 4. Nc3 e6 5. Nf3 Nbd7 6. b3 Bb4 7. Bd2 0-0 8. Be2 b6 9. 0-0 Qe7 10. Qc2 Bb7 11. Bd3 e5 12. dxe5 Nxe5 13. Nxe5 Qxe5 14. Ne2 Bxd2 15. Qxd2 c5 16. Rfe1 Rad8 17. Qc2 Qg5 18. Ng3 g6 19. Bf1 h5 20. Ne2 dxc4 21. bxc4 Qh4 22. Nc3 Ne4 23. Nxe4 Bxe4 24. Qc3 Qg5 25. Rad1 Rxd1 26. Rxd1 Rd8 27. Rxd8+ Qxd8 28. Be2 Qd7 29. f3 Bf5 30. Kf2 Be6 31. Qc2 Qd8 32. g3 Qf6 33. Kg2 Kh7 34. Qc1 Qe5 35. Kf2 Qf5 36. Kg1 Qf6 37. Kf2 Qe5 38. Kg2 b5 39. cxb5 c4 40. a4 h4 41. Qc2 Qxe3 42. a5 h3+ 43. Kf1 c3 44. b6 axb6 45. axb6 Bd5 46. Qd3 Qc5 47. Qc2 Kg8 48. Bd1 Qb4 49. g4 Qd4 50. Be2 Qe5 51. Bd1 Bc4+ 52. Kg1 Qe1# 0-1

[Event "VIE-chT"]
[Site "Hanoi"]
[Date "2023.04.20"]
[Round "5"]
[White "Ninh, Anh Phi"]
[Black "Chau, Van Khai Hoan"]
[Result "0-1"]
[ECO "B34"]
[WhiteElo "1942"]
[BlackElo "1987"]
[PlyCount "139"]
[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 g6 3. d4 cxd4 4. Nxd4 Bg7 5. Be2 Nc6 6. c3 Nf6 7. Bf3 Qc7 8. 0-0 a6 9. Re1 d6 10. Nd2 0-0 11. N2b3 Ne5 12. Bf4 Nfd7 13. Nc2 Nc4 14. Ne3 Nxb2 15. Nd5 Qd8 16. Qe2 Na4 17. Rac1 Nab6 18. c4 Nxd5 19. exd5 Ne5 20. c5 Bd7 21. Bxe5 Bxe5 22. c6 Bc8 23. c7 Qd7 24. Nc5 Qb5 25. Nd3 Bf6 26. Rb1 Qa5 27. Rec1 b5 28. Nb4 Bf5 29. Be4 Bxe4 30. Qxe4 Rfc8 31. f4 Rxc7 32. Rxc7 Qxc7 33. Nc6 Qd7 34. h3 Qf5 35. Re1 Qxe4 36. Rxe4 Kf8 37. g4 h6 38. Kf2 Ke8 39. Ke3 Kd7 40. h4 e6 41. Nb4 Bxh4 42. Kd3 a5 43. dxe6+ fxe6 44. f5 axb4 45. fxe6+ Ke7 46. Rxb4 Ra3+ 47. Kc2 Rxa2+ 48. Kb3 Ra1 49. Kb2 Bf6+ 50. Kc2 Ra4 51. Rxb5 Rxg4 52. Kd2 Be5 53. Ke2 Rf4 54. Rb7+ Kxe6 55. Rh7 h5 56. Rb7 h4 57. Rb3 g5 58. Rh3 Rf8 59. Ke3 Bg3 60. Rh1 g4 61. Ke2 Ke5 62. Ke3 h3 63. Ke2 h2 64. Rd1 d5 65. Ke3 Rf3+ 66. Ke2 Ke4 67. Rh1 d4 68. Kd2 Rf2+ 69. Kc1 Bf4+ 70. Kb1 0-1

[Event "VIE-chT"]
[Site "Hanoi"]
[Date "2023.04.19"]
[Round "3"]
[White "Nguyen, Hoang Vi"]
[Black "Chau, Van Khai Hoan"]
[Result "0-1"]
[ECO "D17"]
[WhiteElo "1923"]
[BlackElo "1987"]
[PlyCount "158"]
[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 dxc4 4. a4 Nf6 5. Nf3 Bf5 6. Ne5 e6 7. Nxc4 Bb4 8. Qb3 a5 9. e3 Na6 10. Be2 0-0 11. 0-0 Qe7 12. Ne5 Bd6 13. Nd3 Nd5 14. Rd1 Ndb4 15. e4 Bg6 16. Be3 Nxd3 17. Bxd3 Nb4 18. Be2 e5 19. f3 exd4 20. Bxd4 Bh5 21. Bf2 Rfe8 22. Na2 Na6 23. Rac1 Nc5 24. Qc2 Ne6 25. Nc3 Nf4 26. Bf1 Rad8 27. Ne2 Ne6 28. Ng3 Bg6 29. Re1 Bb4 30. Red1 Bd6 31. Ne2 Qg5 32. g3 Qf6 33. Bg2 Ng5 34. Qb3 Qe7 35. Bb6 Bc7 36. Bc5 Qe6 37. Rxd8 Bxd8 38. Qxb7 f5 39. Nf4 Qf7 40. Qxc6 fxe4 41. Nxg6 exf3 42. Nf4 fxg2 43. Kxg2 Ne6 44. Rf1 Nxc5 45. Qxc5 Qb7+ 46. Qd5+ Qxd5+ 47. Nxd5 Re2+ 48. Rf2 Rxf2+ 49. Kxf2 Kf7 50. Ke3 Ke6 51. Kd4 Kd6 52. b3 g6 53. Ne3 Bb6+ 54. Kd3 Bc7 55. Kc4 Kc6 56. Nd5 Bd8 57. Kd4 Bc7 58. Ne3 Bb6+ 59. Kd3 Kc5 60. Ke4 Bc7 61. Nd5 Bd6 62. Nf6 Kb4 63. Nd7 Kxb3 64. Kd5 Bb4 65. Nb6 Be1 66. Ke4 Bf2 67. Nd5 Kxa4 68. Kd3 Kb3 69. Nf6 a4 70. Ne4 Be1 71. Nc5+ Kb4 72. Ne4 a3 73. Kc2 Kc4 74. Kb1 Kd4 75. Nf6 h5 76. Ka2 Bb4 77. h4 Ke5 78. Nd7+ Kf5 79. Kb1 Bd6 0-1

[Event "VIE-chT"]
[Site "Hanoi"]
[Date "2023.04.18"]
[Round "1"]
[White "Nguyen, Thai Binh"]
[Black "Chau, Van Khai Hoan"]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "2273"]
[BlackElo "1987"]
[PlyCount "97"]
[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. Nf3 Nf6 3. Bf4 e6 4. e3 Nbd7 5. c3 b6 6. Bd3 Bb7 7. h3 Be7 8. 0-0 0-0 9. Nbd2 Re8 10. a4 c6 11. b4 Nf8 12. Qb3 Ng6 13. Bh2 Bd6 14. Bxd6 Qxd6 15. c4 Rec8 16. c5 Qc7 17. Qc3 Nf8 18. a5 Rcb8 19. cxb6 axb6 20. a6 Bc8 21. Rfc1 Qe7 22. Qxc6 Bd7 23. Qc3 Rc8 24. Qa3 Rxc1+ 25. Rxc1 Ra7 26. Ne5 Ne8 27. Nc6 Bxc6 28. Rxc6 Qd8 29. b5 Nd7 30. Nf3 Nb8 31. Rc3 f6 32. e4 Qd7 33. exd5 exd5 34. Qb3 Nc7 35. Nd2 g6 36. Nf1 Ne6 37. Ne3 Nxd4 38. Qxd5+ Kg7 39. Qxd7+ Nxd7 40. Nd5 Nc5 41. Rxc5 bxc5 42. b6 Nc6 43. bxa7 Nxa7 44. Nc7 f5 45. Nb5 Nc8 46. a7 Nxa7 47. Nxa7 Kf6 48. Nb5 Ke5 49. Bc4 1-0

[Event "VIE-ch U11"]
[Site "Ho Chi Minh City"]
[Date "2022.07.15"]
[Round "7"]
[White "Chu, Phan Dang Khoa"]
[Black "Chau, Van Khai Hoan"]
[Result "0-1"]
[ECO "B34"]
[WhiteElo "2365"]
[BlackElo "2360"]
[PlyCount "94"]
[EventDate "2022.07.11"]
[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. Nc3 Nc6 6. Be3 Nf6 7. Qd2 0-0 8. f3 d5 9. exd5 Nxd5 10. Nxd5 Qxd5 11. Nxc6 Qxc6 12. 0-0-0 Bf5 13. Bd3 Rfd8 14. Qe2 Be6 15. a3 a6 16. Rhe1 Rac8 17. Be4 Qc7 18. h3 b5 19. Kb1 a5 20. Rxd8+ Rxd8 21. Rd1 Rc8 22. Bd4 Bc4 23. Qf2 Rd8 24. Rd2 e5 25. Bc3 Rb8 26. Rd1 b4 27. axb4 axb4 28. Be1 Qa5 29. b3 Be6 30. Qh4 f6 31. Bc6 Qc5 32. Ba4 Bf7 33. Qe4 Be6 34. Qe2 Rc8 35. g4 f5 36. Bd7 Bxd7 37. Rxd7 e4 38. Qd1 exf3 39. Qd5+ Qxd5 40. Rxd5 fxg4 41. hxg4 Ra8 42. c3 bxc3 43. Rd3 Ra1+ 44. Kxa1 c2+ 45. Ka2 c1Q 46. Rd8+ Kf7 47. Rd7+ Ke6 0-1

[Event "VIE-ch U11"]
[Site "Ho Chi Minh City"]
[Date "2022.07.14"]
[Round "6"]
[White "Chau, Van Khai Hoan"]
[Black "Nguyen, Quang Minh1111"]
[Result "1-0"]
[ECO "D46"]
[WhiteElo "2360"]
[BlackElo "2362"]
[PlyCount "61"]
[EventDate "2022.07.11"]
[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. e3 e6 4. Nc3 Nf6 5. Nf3 Bd6 6. b3 0-0 7. Bb2 Nbd7 8. Bd3 dxc4 9. bxc4 b6 10. 0-0 Bb7 11. Qe2 h6 12. Rfd1 Qe7 13. h3 c5 14. Rac1 Rac8 15. Bb1 e5 16. d5 e4 17. Nd2 Qe5 18. Nf1 Qe7 19. Qc2 Rce8 20. Nd2 Qe5 21. Ncxe4 Qh2+ 22. Kf1 Be5 23. Nxf6+ Nxf6 24. Nf3 Qh1+ 25. Ke2 Qxg2 26. Bxe5 Qg6 27. Qb2 Qh5 28. Bxf6 gxf6 29. Rg1+ Qg6 30. Qxf6 Qxg1 31. Rxg1# 1-0

[Event "VIE-ch U11"]
[Site "Ho Chi Minh City"]
[Date "2022.07.14"]
[Round "5"]
[White "Nguyen, Minh Khang"]
[Black "Chau, Van Khai Hoan"]
[Result "1-0"]
[ECO "D13"]
[WhiteElo "2350"]
[BlackElo "2360"]
[PlyCount "155"]
[EventDate "2022.07.11"]
[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. Nc3 Nf6 4. cxd5 cxd5 5. Bf4 e6 6. Nf3 Nc6 7. e3 a6 8. Bd3 Be7 9. 0-0 0-0 10. Ne5 Nxe5 11. dxe5 Nd7 12. Bg3 b5 13. Ne2 Nb6 14. Nd4 Bd7 15. f4 g6 16. b3 Qc7 17. Rc1 Qb7 18. h4 Rfc8 19. h5 Rxc1 20. Qxc1 Bf8 21. hxg6 fxg6 22. Qd1 Re8 23. Qg4 Bg7 24. Rc1 Rc8 25. Rd1 Re8 26. Bh4 Qc7 27. e4 Bc8 28. Bf2 Bd7 29. Be3 Qb7 30. exd5 Nxd5 31. Bf2 Nc3 32. Rd2 a5 33. Ne2 Nxe2+ 34. Bxe2 Bc6 35. Rd6 Bf8 36. Rd1 Bd5 37. Bd3 Bg7 38. Rc1 a4 39. Rc5 axb3 40. axb3 Bc6 41. Bf1 b4 42. Bc4 Qd7 43. Kh2 Bf8 44. Ra5 Kh8 45. Ra7 Qc8 46. Qh4 Bg7 47. Re7 Bd7 48. Rxe8+ Qxe8 49. Bc5 Bf8 50. Qf2 Kg7 51. Qd4 Bxc5 52. Qxc5 Qf8 53. Qd4 Qe7 54. g3 Kf7 55. Qd3 Bc6 56. f5 gxf5 57. Qxf5+ Ke8 58. Bxe6 Qa7 59. Bc4 Qa2+ 60. Kh3 Qg2+ 61. Kg4 Qe4+ 62. Qxe4 Bxe4 63. Kf4 Bg6 64. e6 Ke7 65. Ke5 Bh5 66. Kd5 Bg4 67. Kc5 h5 68. Kxb4 Bxe6 69. Bxe6 Kxe6 70. Kc5 Kf5 71. b4 Kg4 72. b5 Kxg3 73. b6 h4 74. b7 h3 75. b8Q+ Kg2 76. Qg8+ Kh1 77. Qf7 Kh2 78. Qf1 1-0

[Event "VIE-ch U11"]
[Site "Ho Chi Minh City"]
[Date "2022.07.13"]
[Round "4"]
[White "Chau, Van Khai Hoan"]
[Black "Bien, Hoang Gia Phu"]
[Result "1-0"]
[ECO "D12"]
[WhiteElo "2360"]
[BlackElo "2363"]
[PlyCount "71"]
[EventDate "2022.07.11"]
[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. e3 Nf6 4. Nc3 Bf5 5. Qb3 Qb6 6. Qxb6 axb6 7. cxd5 cxd5 8. Nf3 e6 9. Bb5+ Nbd7 10. Ne5 Bb4 11. g4 Bxg4 12. Bxd7+ Nxd7 13. Nxg4 f6 14. h4 e5 15. Ke2 Bxc3 16. bxc3 h5 17. Nh2 e4 18. f3 f5 19. fxe4 fxe4 20. Rg1 Kf7 21. Bb2 g6 22. a3 Nb8 23. Raf1+ Kg7 24. c4 Na6 25. cxd5 Nc7 26. d6 Nd5 27. Rg5 Rhc8 28. Kd2 Ra5 29. Rc1 Rd8 30. Nf1 Rb5 31. Rc2 Ra5 32. Ng3 Nf6 33. d5 Kf7 34. Rc7+ Ke8 35. Bxf6 Rxd6 36. Re5+ 1-0

[Event "VIE-ch U11"]
[Site "Ho Chi Minh City"]
[Date "2022.07.12"]
[Round "2"]
[White "Chau, Van Khai Hoan"]
[Black "Nguyen, Hoang Khanh"]
[Result "0-1"]
[ECO "D18"]
[WhiteElo "2360"]
[BlackElo "2349"]
[PlyCount "176"]
[EventDate "2022.07.11"]
[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. Nc3 Nf6 4. Nf3 dxc4 5. a4 Bf5 6. e3 e6 7. Bxc4 Nbd7 8. 0-0 Bb4 9. Qb3 Qb6 10. Bd2 0-0 11. h3 h6 12. Rfe1 Bg6 13. Ne2 Be7 14. a5 Qxb3 15. Bxb3 a6 16. Rec1 Bd6 17. Bc4 Ne4 18. Be1 Nef6 19. Nd2 e5 20. Rc3 exd4 21. exd4 Rfe8 22. Rb3 Rab8 23. Kf1 c5 24. Bd3 Bxd3 25. Rxd3 cxd4 26. Nxd4 Nc5 27. Rf3 Be5 28. N4b3 Rec8 29. Rb1 Na4 30. Rf5 Bd6 31. Nd4 b6 32. b3 Nc3 33. Rc1 Ba3 34. Rc2 b5 35. Rf3 Nfd5 36. Rg3 Bd6 37. Rd3 Bb4 38. Nf5 Bxa5 39. Rg3 g6 40. Nxh6+ Kg7 41. Nf5+ Kf8 42. Nd4 Bb6 43. Ne2 Nxe2 44. Rxc8+ Rxc8 45. Kxe2 Nf4+ 46. Kd1 Rd8 47. Kc2 Ne2 48. Rg4 Rc8+ 49. Kd1 Nc3+ 50. Kc2 Ne4+ 51. Kb1 Nxf2 52. Rg3 Re8 53. Nf3 Nd3 54. Bc3 Nc5 55. Ng5 Ne4 56. Bb4+ Kg8 57. Nxe4 Rxe4 58. Bc3 Kf8 59. Kc2 Ke7 60. Rd3 Re2+ 61. Rd2 Rxd2+ 62. Kxd2 Ke6 63. b4 Kf5 64. Kd3 Kf4 65. Be1 f5 66. Bh4 Ba7 67. Be1 Bg1 68. Bh4 Ba7 69. Be1 Bb6 70. Ke2 Ke4 71. Bc3 Bc7 72. Bb2 Bd6 73. Bc3 Be7 74. Kd2 f4 75. Ke2 Bd6 76. Kd2 f3 77. gxf3+ Kxf3 78. Kd3 Be7 79. Bd2 Bf6 80. h4 Bxh4 81. Kd4 g5 82. Kc5 Bf2+ 83. Kc6 g4 84. Bc3 g3 85. Be5 g2 86. Bh2 Kg4 87. Kb7 Kh3 88. Kxa6 Kxh2 0-1

[Event "VIE-ch U11"]
[Site "Ho Chi Minh City"]
[Date "2022.07.12"]
[Round "3"]
[White "Nguyen, Ba Khanh Trinh"]
[Black "Chau, Van Khai Hoan"]
[Result "0-1"]
[ECO "B30"]
[WhiteElo "2355"]
[BlackElo "2360"]
[PlyCount "116"]
[EventDate "2022.07.11"]
[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. Bc4 Bg7 4. d3 Nc6 5. Nc3 e6 6. 0-0 Nge7 7. Bg5 0-0 8. Qd2 Re8 9. Bh6 Bh8 10. Rfe1 d6 11. Qf4 Ne5 12. Nxe5 Bxe5 13. Qd2 Bd7 14. f4 Bd4+ 15. Kh1 Bc6 16. Qe2 d5 17. exd5 exd5 18. Bg5 f6 19. Bh6 Nf5 20. Bxd5+ Bxd5 21. Qxe8+ Qxe8 22. Rxe8+ Rxe8 23. Nxd5 Nxh6 24. c3 Rd8 25. cxd4 Rxd5 26. dxc5 Rxc5 27. h3 Rc2 28. b3 Nf5 29. Kg1 Nh4 30. g4 Nf3+ 31. Kf1 Rh2 32. Rd1 f5 33. gxf5 gxf5 34. a4 a5 35. h4 h5 36. d4 Rh1+ 37. Ke2 Rxd1 38. Kxd1 Nxd4 39. Kd2 Nf3+ 40. Ke3 Nxh4 41. Kf2 Ng6 42. Kg3 h4+ 43. Kf3 h3 44. Kg3 Nxf4 45. Kh2 Kf7 46. Kg3 Ke6 47. Kh2 Kf6 48. Kg3 Kg5 49. Kh2 Kh4 50. Kg1 Kg3 51. Kf1 h2 52. Ke1 h1Q+ 53. Kd2 Qf3 54. Kc2 Qd3+ 55. Kc1 Ne2+ 56. Kb2 Qd2+ 57. Kb1 Qc1+ 58. Ka2 Nc3# 0-1

[Event "VIE-ch U11"]
[Site "Ho Chi Minh City"]
[Date "2022.07.11"]
[Round "1"]
[White "Nguyen, Hoang Bach"]
[Black "Chau, Van Khai Hoan"]
[Result "1/2-1/2"]
[ECO "D45"]
[WhiteElo "2373"]
[BlackElo "2360"]
[PlyCount "50"]
[EventDate "2022.07.11"]
[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 Nf6 4. e3 e6 5. Nc3 Nbd7 6. Be2 Bd6 7. 0-0 b6 8. b3 Bb7 9. Bb2 0-0 10. Rc1 Rc8 11. Bd3 Qe7 12. Qe2 c5 13. Rfd1 Rfd8 14. e4 dxc4 15. Bxc4 cxd4 16. Nxd4 Ne5 17. Ba6 Ng6 18. Bxb7 Qxb7 19. Ndb5 Bf4 20. Rxd8+ Rxd8 21. Rd1 Rd7 22. Rxd7 Qxd7 23. Qd1 Qxd1+ 24. Nxd1 a6 25. Bxf6 gxf6 1/2-1/2

[Event "VIE-chT"]
[Site "Hanoi"]
[Date "2022.04.02"]
[Round "9.15"]
[White "Chau, Van Khai Hoan"]
[Black "Le, Quang Vinh"]
[Result "1/2-1/2"]
[ECO "A85"]
[BlackElo "1845"]
[PlyCount "8"]
[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 f5 2. c4 Nf6 3. Nc3 g6 4. Be3 Bg7 1/2-1/2

[Event "VIE-chT"]
[Site "Hanoi"]
[Date "2022.04.01"]
[Round "7.13"]
[White "Doan, Van Duc"]
[Black "Chau, Van Khai Hoan"]
[Result "1-0"]
[ECO "B27"]
[WhiteElo "2127"]
[PlyCount "75"]
[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. Qxd4 Nf6 5. c4 Nc6 6. Qe3 Bg7 7. Nc3 d6 8. h3 0-0 9. Be2 Nd7 10. 0-0 Nc5 11. Bd2 a5 12. Rfd1 Nb4 13. Rac1 f5 14. exf5 Bxf5 15. Nd4 Bd7 16. Be1 Nc6 17. Ncb5 Nxd4 18. Nxd4 Qb6 19. Nb3 Bc6 20. Bc3 Bxc3 21. Rxc3 Na4 22. c5 Qc7 23. cxd6 exd6 24. Rc2 Rae8 25. Qd4 d5 26. Bb5 Re4 27. Qxd5+ Bxd5 28. Rxc7 Nb6 29. Nd4 Ra8 30. Nc2 Rf8 31. b3 Rf7 32. Rc5 Be6 33. Rd6 Nc8 34. Rxe6 Rxe6 35. Rxc8+ Kg7 36. Bc4 Ree7 37. Bxf7 Kxf7 38. Ne3 1-0

[Event "VIE-chT"]
[Site "Hanoi"]
[Date "2022.04.01"]
[Round "8.22"]
[White "Hoang, Thi Bao Tram"]
[Black "Chau, Van Khai Hoan"]
[Result "0-1"]
[ECO "A08"]
[WhiteElo "2269"]
[PlyCount "100"]
[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. Nf3 Nf6 2. g3 d5 3. Bg2 c5 4. 0-0 Nc6 5. d3 g6 6. Nbd2 Bg7 7. e4 d4 8. a4 e5 9. Nc4 Qc7 10. Ne1 Be6 11. b3 0-0 12. f4 Nd7 13. Nf3 Bxc4 14. bxc4 Rfe8 15. Bd2 a5 16. Qe2 Rad8 17. Nh4 Ndb8 18. Rab1 Na6 19. fxe5 Nxe5 20. Bf4 Nb4 21. Qd2 Qd7 22. Ra1 Qe7 23. Rf2 Ng4 24. Re2 Ne3 25. Rc1 g5 26. Nf5 Nxf5 27. Bxg5 f6 28. Bf4 Nd6 29. Bf3 Nf7 30. Bh5 Na2 31. Ra1 Nc3 32. Rf2 Rf8 33. Bg4 Ne5 34. Bf5 Qe8 35. h4 Qh5 36. Kg2 Qf7 37. Bxe5 fxe5 38. Bxh7+ Kxh7 39. Rxf7 Rxf7 40. Qg5 Rdf8 41. Qh5+ Kg8 42. Qg4 Rf2+ 43. Kh1 Ne2 44. h5 Kh8 45. Qg6 R8f6 46. Qg4 R6f3 47. Rb1 Rxg3 48. Qc8+ Kh7 49. Qe6 Rgg2 50. Qh3 Ng3+ 0-1

[Event "VIE-chT"]
[Site "Hanoi"]
[Date "2022.03.31"]
[Round "6.14"]
[White "Chau, Van Khai Hoan"]
[Black "Nguyen, Huynh Tuan Hai"]
[Result "1/2-1/2"]
[ECO "E46"]
[BlackElo "2019"]
[PlyCount "33"]
[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 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 0-0 5. Nge2 Re8 6. a3 Bf8 7. Nf4 d6 8. Bd3 c6 9. 0-0 e5 10. Nh5 Nbd7 11. Nxf6+ Nxf6 12. f3 a5 13. b3 Be6 14. Bb2 exd4 15. exd4 g6 16. Kh1 Bg7 17. Qd2 1/2-1/2

[Event "VIE-chT"]
[Site "Hanoi"]
[Date "2022.03.30"]
[Round "5.19"]
[White "Chau, Van Khai Hoan"]
[Black "Tran, Duc Tu"]
[Result "1/2-1/2"]
[ECO "D36"]
[BlackElo "2052"]
[PlyCount "82"]
[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 e6 3. Nc3 Nf6 4. cxd5 exd5 5. Bg5 c6 6. e3 Be7 7. Bd3 0-0 8. Nf3 Nbd7 9. 0-0 Re8 10. Qc2 Nf8 11. Bxf6 Bxf6 12. b4 a6 13. a4 Bg4 14. Nd2 Qd6 15. Nb3 Bd8 16. Nc5 Bc7 17. g3 Bc8 18. b5 h5 19. bxa6 bxa6 20. a5 h4 21. Qd2 Qh6 22. Rfe1 g6 23. N3a4 Nh7 24. f4 hxg3 25. Nb6 Qxh2+ 26. Qxh2 gxh2+ 27. Kxh2 Ra7 28. Nxc8 Rxc8 29. Nxa6 Bd8 30. Rec1 Nf6 31. Kg3 Kg7 32. Kf3 Ne8 33. Rc5 Be7 34. Rc2 Bd8 35. Nb4 Rxa5 36. Rac1 Nf6 37. Nxc6 Ra3 38. Ne5 Rxc2 39. Rxc2 Ra7 40. Nc6 Rd7 41. Ne5 Rc7 1/2-1/2

[Event "VIE-chT"]
[Site "Hanoi"]
[Date "2022.03.30"]
[Round "4.12"]
[White "Pham, Minh Hieu"]
[Black "Chau, Van Khai Hoan"]
[Result "1-0"]
[ECO "B26"]
[WhiteElo "1978"]
[PlyCount "65"]
[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. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 e6 6. Be3 d6 7. Qd2 Nd4 8. Nd1 Nc6 9. c3 Nge7 10. Bh6 0-0 11. h4 f6 12. Bxg7 Kxg7 13. h5 Rh8 14. Ne3 f5 15. Nf3 d5 16. exd5 Nxd5 17. hxg6 hxg6 18. Rxh8 Qxh8 19. Nxd5 exd5 20. 0-0-0 Be6 21. Rh1 Qg8 22. Qh6+ Kf6 23. Ng5 Ne5 24. Qh4 Kg7 25. Kd2 Nd7 26. Re1 Re8 27. Nxe6+ Rxe6 28. Bxd5 Re2+ 29. Rxe2 Qxd5 30. Re7+ Kf8 31. Qh7 Qg8 32. Re8+ Kxe8 33. Qxg8+ 1-0

[Event "VIE-chT"]
[Site "Hanoi"]
[Date "2022.03.29"]
[Round "3.16"]
[White "Chau, Van Khai Hoan"]
[Black "Pham, Quang Hung"]
[Result "1-0"]
[ECO "E11"]
[BlackElo "1902"]
[PlyCount "58"]
[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 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Bd2 Qe7 5. a3 Bxd2+ 6. Nbxd2 a5 7. e4 d5 8. Bd3 0-0 9. 0-0 c6 10. Qe2 Nbd7 11. e5 Ne8 12. cxd5 exd5 13. Rac1 Nc7 14. Qe3 Ne6 15. Rfe1 c5 16. dxc5 Ndxc5 17. Bb1 b6 18. b4 Nd7 19. Qd3 g6 20. Qxd5 axb4 21. Qxa8 Ndc5 22. Qd5 bxa3 23. Qa2 Bb7 24. Qxa3 Rd8 25. Ne4 Qc7 26. Nxc5 Nxc5 27. Ng5 h6 28. Ne4 Qc6 29. f3 Qd5 1-0

[Event "VIE-chT"]
[Site "Hanoi"]
[Date "2022.03.28"]
[Round "1.11"]
[White "Nguyen, Phuoc Tam"]
[Black "Chau, Van Khai Hoan"]
[Result "1-0"]
[ECO "A09"]
[WhiteElo "2199"]
[PlyCount "96"]
[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. Nf3 d5 2. c4 d4 3. g3 c5 4. Bg2 Nc6 5. 0-0 e5 6. d3 Bd6 7. e3 Nge7 8. exd4 exd4 9. Nbd2 f5 10. Re1 h6 11. a3 0-0 12. b4 cxb4 13. Nb3 bxa3 14. Nbxd4 Nxd4 15. Nxd4 Bb4 16. Ne6 Bxe6 17. Rxe6 Qd7 18. Qe2 Kf7 19. Re5 Bc3 20. Bxa3 Bxe5 21. Qxe5 Rh8 22. Rb1 Nc6 23. Qd5+ Qxd5 24. Bxd5+ Kg6 25. Rxb7 Rac8 26. Bb2 Rcg8 27. Bxg8 Rxg8 28. Bc3 h5 29. Rc7 Nd8 30. Rxa7 Nf7 31. h4 Rc8 32. Kg2 Rb8 33. d4 Rb3 34. Bd2 Rd3 35. Be3 f4 36. gxf4 Nh6 37. Kf3 Rc3 38. c5 Nf5 39. Ke4 Nxh4 40. f5+ Kf6 41. d5 Rc4+ 42. Bd4+ Kg5 43. f4+ Kh6 44. Kd3 Rxd4+ 45. Kxd4 Nxf5+ 46. Ke4 Ng3+ 47. Kf3 Nf5 48. c6 Nd6 1-0

