[Event "Belt and Road Hunan op-C"]
[Site "Changsha"]
[Date "2019.08.02"]
[Round "9"]
[White "Sun, Jiahao"]
[Black "Min, Zhengyang"]
[Result "1-0"]
[ECO "A85"]
[WhiteElo "1029"]
[PlyCount "95"]
[EventDate "2019.07.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CHN"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. d4 f5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. Nf3 0-0 6. g3 h6 7. Bf4 d5 8. Bg2 Nbd7 9. 0-0 dxc4 10. Ne5 Nxe5 11. Bxe5 Bd6 12. Qa4 Bxe5 13. dxe5 Nd7 14. f4 Nb6 15. Qc2 Qe7 16. e4 c6 17. Rfd1 Bd7 18. Rd6 Be8 19. Rad1 Bg6 20. Na4 Nxa4 21. Qxa4 b5 22. Qa6 fxe4 23. Qxc6 Rfe8 24. Qxb5 Rac8 25. Qa6 Qc7 26. Qa3 Qb7 27. Qe3 Bf5 28. Rd7 Rc7 29. Rxc7 Qxc7 30. Bxe4 Bxe4 31. Qxe4 Qb6+ 32. Kf1 Rd8 33. Rxd8+ Qxd8 34. Qxc4 Qd1+ 35. Kf2 Qd2+ 36. Kf3 Qd1+ 37. Kg2 Qd7 38. b4 Kh8 39. b5 h5 40. Qc6 Qd1 41. Qxe6 h4 42. Qc8+ Kh7 43. Qc4 Qd2+ 44. Kh3 hxg3 45. hxg3 Qd1 46. Qe4+ Kh6 47. f5 Qf1+ 48. Kh4 1-0

[Event "Belt and Road Hunan op-C"]
[Site "Changsha"]
[Date "2019.08.02"]
[Round "8"]
[White "Ye, Shicong"]
[Black "Sun, Jiahao"]
[Result "1-0"]
[ECO "B70"]
[BlackElo "1029"]
[PlyCount "60"]
[EventDate "2019.07.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CHN"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Nf3 Bg7 7. Be3 0-0 8. Qd2 Nc6 9. 0-0-0 Bd7 10. h4 h5 11. Bh6 Nd4 12. Bxg7 Kxg7 13. Qxd4 Be6 14. Kb1 Qa5 15. Bc4 Bxc4 16. Qxc4 Rac8 17. Qd5 Qc5 18. a3 a6 19. Rhe1 Rfd8 20. Qxc5 dxc5 21. Nd5 e6 22. Nb6 Rb8 23. e5 Nd5 24. Na4 Rbc8 25. c4 Ne7 26. Rxd8 Rxd8 27. Nxc5 Rd4 28. Re3 Re4 29. Rxe4 Nc6 30. Nxb7 Nxe5 1-0

[Event "Belt and Road Hunan op-C"]
[Site "Changsha"]
[Date "2019.08.01"]
[Round "7"]
[White "Sun, Jiahao"]
[Black "Pang, Bohong"]
[Result "1-0"]
[ECO "E24"]
[WhiteElo "1029"]
[PlyCount "50"]
[EventDate "2019.07.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CHN"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Bb4 5. a3 Bxc3+ 6. bxc3 Nc6 7. Nf3 Bd7 8. e3 0-0 9. cxd5 exd5 10. Bd3 Re8 11. 0-0 Bg4 12. h3 Bh5 13. Be2 Qd6 14. Bf4 Qd7 15. Ne5 Nxe5 16. Bxh5 Ng6 17. Bxg6 hxg6 18. Qc2 c6 19. c4 Qf5 20. Qxf5 gxf5 21. cxd5 Nxd5 22. Bh2 Rad8 23. Rab1 Rd7 24. Rb3 Ree7 25. Rfb1 Kh7 1-0

[Event "Belt and Road Hunan op-C"]
[Site "Changsha"]
[Date "2019.08.01"]
[Round "6"]
[White "Wang, Yu Cheng"]
[Black "Sun, Jiahao"]
[Result "1-0"]
[ECO "B70"]
[BlackElo "1029"]
[PlyCount "89"]
[EventDate "2019.07.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CHN"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Bb5+ Bd7 7. Bxd7+ Nbxd7 8. 0-0 Bg7 9. Be3 0-0 10. Qd2 Ne5 11. Bh6 Nc4 12. Qg5 Qa5 13. Qxa5 Nxa5 14. Bxg7 Kxg7 15. Rfe1 Nc4 16. b3 Ne5 17. f4 Ned7 18. Nd5 e6 19. Nxf6 Nxf6 20. c4 Rfd8 21. Nf3 Rac8 22. Rac1 Nd7 23. Red1 Nc5 24. e5 Ne4 25. exd6 Nxd6 26. Rd3 Ne4 27. Rcd1 Rxd3 28. Rxd3 Rc7 29. Kf1 Kf6 30. Ke2 Nc5 31. Rc3 Rd7 32. g3 h6 33. Ne5 Rd6 34. Nd3 Nxd3 35. Rxd3 Rxd3 36. Kxd3 e5 37. Ke4 exf4 38. Kxf4 Ke6 39. c5 f5 40. b4 g5+ 41. Kf3 Kd5 42. h4 Kc4 43. a3 Kb3 44. b5 Kxa3 45. c6 1-0

[Event "Belt and Road Hunan op-C"]
[Site "Changsha"]
[Date "2019.07.31"]
[Round "4"]
[White "Mahmoody, M Sadegh"]
[Black "Sun, Jiahao"]
[Result "1-0"]
[ECO "A16"]
[WhiteElo "1900"]
[BlackElo "1029"]
[PlyCount "69"]
[EventDate "2019.07.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CHN"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 d5 3. cxd5 Nxd5 4. e4 Nxc3 5. dxc3 Qxd1+ 6. Kxd1 Nc6 7. Bf4 e5 8. Be3 Be6 9. Bb5 Bd7 10. Nf3 f6 11. Be2 0-0-0 12. Kc2 Be6 13. Nh4 a6 14. h3 Bd6 15. Nf5 Bxf5 16. exf5 Ne7 17. g4 Nd5 18. Bd2 Bc5 19. Rh2 Nf4 20. Bxf4 exf4 21. Bc4 Rd6 22. b4 Bb6 23. Rd1 Rxd1 24. Kxd1 Rd8+ 25. Kc2 c5 26. a3 cxb4 27. axb4 a5 28. bxa5 Bxa5 29. h4 h6 30. Rg2 Bb6 31. f3 Rf8 32. g5 hxg5 33. hxg5 Kb8 34. gxf6 g6 35. fxg6 1-0

[Event "Belt and Road Hunan op-C"]
[Site "Changsha"]
[Date "2019.07.31"]
[Round "5"]
[White "Sun, Jiahao"]
[Black "Mao, Kaihan"]
[Result "1/2-1/2"]
[ECO "D59"]
[WhiteElo "1029"]
[PlyCount "59"]
[EventDate "2019.07.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CHN"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. e3 0-0 6. Nf3 h6 7. Bh4 b6 8. cxd5 Nxd5 9. Bxe7 Qxe7 10. Nxd5 exd5 11. Bd3 Bb7 12. 0-0 Nd7 13. Rc1 Rfc8 14. b3 c5 15. Bb1 Nf6 16. Ne5 Ba6 17. Bd3 Bxd3 18. Qxd3 Nd7 19. Nxd7 Qxd7 20. dxc5 Rxc5 21. g3 Rac8 22. Rxc5 bxc5 23. Rd1 Rd8 24. Qc3 Qd6 25. Kg2 Qc6 26. Kg1 Qa6 27. Rd2 Qd6 28. Qa5 Qb6 29. Qc3 Qb5 30. Rc2 1/2-1/2

[Event "Belt and Road Hunan op-C"]
[Site "Changsha"]
[Date "2019.07.30"]
[Round "2"]
[White "He, Yichen"]
[Black "Sun, Jiahao"]
[Result "1-0"]
[ECO "B76"]
[WhiteElo "1863"]
[BlackElo "1029"]
[PlyCount "57"]
[EventDate "2019.07.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CHN"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 0-0 8. Qd2 Nc6 9. g4 Bd7 10. 0-0-0 Rc8 11. g5 Nh5 12. Nxc6 Bxc6 13. Ne2 a5 14. Ng3 b5 15. Nxh5 gxh5 16. Bd4 Qc7 17. Bxg7 Kxg7 18. f4 a4 19. f5 Kg8 20. Bd3 a3 21. g6 hxg6 22. fxg6 fxg6 23. Rdg1 axb2+ 24. Kxb2 Be8 25. e5 Kh7 26. Rg5 Kg7 27. Rhg1 b4 28. Rxg6+ Bxg6 29. Rxg6+ 1-0

[Event "Belt and Road Hunan op-C"]
[Site "Changsha"]
[Date "2019.07.30"]
[Round "3"]
[White "Sun, Jiahao"]
[Black "Wang, Hanbo"]
[Result "1-0"]
[ECO "B28"]
[WhiteElo "1029"]
[PlyCount "109"]
[EventDate "2019.07.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CHN"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. Nf3 e6 4. Nc3 cxd4 5. Nxd4 a6 6. e4 Nc6 7. Be3 Bb4 8. Nxc6 bxc6 9. Qd3 d5 10. exd5 cxd5 11. a3 Bxc3+ 12. Qxc3 0-0 13. Be2 Bb7 14. 0-0 dxc4 15. Qxc4 Qc8 16. Qb4 Qd7 17. Rfd1 Nd5 18. Qg4 f5 19. Qd4 Qf7 20. Bf3 Qg6 21. Re1 Rad8 22. Qe5 Nxe3 23. Qxe3 Bxf3 24. Qxf3 Rd6 25. Rad1 Rfd8 26. Rxd6 Rxd6 27. Qa8+ Kf7 28. Qa7+ Kf6 29. Qc5 Rd5 30. Qc3+ Kf7 31. Qc7+ Kf6 32. Qc6 Qf7 33. Qxa6 Qd7 34. g3 Rd2 35. Qb6 g5 36. Qe3 Qd5 37. Qc3+ Kf7 38. b4 h5 39. Qc7+ Kf6 40. Qc3+ Kf7 41. Qe3 Kf6 42. h4 gxh4 43. gxh4 Rd1 44. Qg5+ Kf7 45. Qxh5+ Ke7 46. Rxd1 Qb3 47. Qh7+ Kf6 48. Qh6+ Ke7 49. Qg7+ Ke8 50. Qd7+ Kf8 51. Qd8+ Kg7 52. Qg5+ Kf8 53. Rd8+ Kf7 54. Rd7+ Ke8 55. Qe7# 1-0

[Event "Belt and Road Hunan op-C"]
[Site "Changsha"]
[Date "2019.07.29"]
[Round "1"]
[White "Sun, Jiahao"]
[Black "Xiao, Yao1111"]
[Result "1-0"]
[ECO "A53"]
[WhiteElo "1029"]
[PlyCount "71"]
[EventDate "2019.07.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CHN"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. Nf3 d6 4. Nc3 Nc6 5. d5 Ne5 6. Nxe5 dxe5 7. e4 g6 8. Be3 b6 9. f3 Bg7 10. Be2 Bd7 11. Rb1 Rb8 12. a3 0-0 13. 0-0 Qc7 14. Qd2 Rfd8 15. f4 Bc8 16. fxe5 Nd7 17. e6 fxe6 18. Bf4 Ne5 19. Qe1 exd5 20. exd5 Bb7 21. Qg3 Rf8 22. Nb5 Qd7 23. Bxe5 a6 24. Nc3 Rbd8 25. Bxg7 Kxg7 26. Bg4 Qe8 27. Qe5+ Kh6 28. Rxf8 Qxf8 29. Rf1 Qh8 30. Qe3+ Kg7 31. Qxe7+ Kh6 32. Qe3+ Kg7 33. Be6 Qe8 34. Rf7+ Kh8 35. Qe5+ Kg8 36. Qg7# 1-0

[Event "Da Qing U20 op-B"]
[Site "Da Qing"]
[Date "2019.01.24"]
[Round "9"]
[White "Ning, Jiayu"]
[Black "Sun, Jiahao"]
[Result "0-1"]
[ECO "B30"]
[PlyCount "158"]
[EventDate "2019.01.20"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CHN"]
[SourceTitle "CBM 188 Extra"]
[Source "ChessBase"]
[SourceDate "2019.02.26"]
[SourceVersion "1"]
[SourceVersionDate "2019.02.26"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 g6 3. Bc4 Nc6 4. Nf3 Bg7 5. 0-0 e6 6. d3 Nge7 7. Re1 0-0 8. Bf4 d5 9. exd5 exd5 10. Bb3 a6 11. Ne5 Be6 12. Nxc6 Nxc6 13. a4 Rc8 14. Qd2 Nd4 15. Rad1 Nxb3 16. cxb3 d4 17. Ne4 Bxb3 18. Rc1 Bxa4 19. Nxc5 Bc6 20. f3 Qb6 21. b4 Rfe8 22. Ne4 Bxe4 23. Rxe4 Rxc1+ 24. Qxc1 Rxe4 25. fxe4 Qxb4 26. Kf2 Qc3 27. Qb1 b5 28. Ke2 b4 29. Bd2 Qc5 30. Bxb4 Qb5 31. Qe1 f5 32. exf5 Qe5+ 33. Kd2 Qxe1+ 34. Kxe1 gxf5 35. Kf2 Kf7 36. Ke2 Bf8 37. Ba5 Bc5 38. Kd2 Ke6 39. Kc2 Kd6 40. Kb3 Kd5 41. Be1 h6 42. Bd2 h5 43. h3 Ke5 44. Kc4 Bb6 45. Bc1 Ba5 46. g3 Bc3 47. Bf4+ Ke6 48. Bc1 Kd6 49. Ba3+ Ke6 50. Bc1 a5 51. Kb5 Kd5 52. Bf4 Be1 53. Bb8 Ke6 54. Bf4 Kf6 55. Bb8 h4 56. gxh4 Bxh4 57. Kxa5 Bg5 58. Bg3 f4 59. Bf2 Ke5 60. Kb5 f3 61. h4 Be3 62. Bg3+ Kf5 63. Kc4 f2 64. Bxf2 Bxf2 65. Kd5 Kg4 66. Ke4 Kxh4 67. Kf4 Be3+ 68. Kf3 Kg5 69. Ke4 Kg4 70. Kd5 Kf3 71. Kc4 Ke2 72. Kb3 Kxd3 73. Ka2 Kc2 74. Ka3 d3 75. Kb4 d2 76. Ka3 d1Q 77. Kb4 Qd5 78. Ka4 Bd2 79. Ka3 Qb3# 0-1

[Event "Da Qing U20 op-B"]
[Site "Da Qing"]
[Date "2019.01.23"]
[Round "7"]
[White "Chen, Tzi Xuen"]
[Black "Sun, Jiahao"]
[Result "1/2-1/2"]
[ECO "E11"]
[WhiteElo "1371"]
[PlyCount "171"]
[EventDate "2019.01.20"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CHN"]
[SourceTitle "CBM 188 Extra"]
[Source "ChessBase"]
[SourceDate "2019.02.26"]
[SourceVersion "1"]
[SourceVersionDate "2019.02.26"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. g3 Bb4+ 5. Bd2 Bxd2+ 6. Nbxd2 dxc4 7. Nxc4 b6 8. Bg2 Bb7 9. 0-0 0-0 10. Rc1 Nbd7 11. Nce5 c5 12. Nxd7 Nxd7 13. dxc5 Nxc5 14. b4 Na6 15. b5 Nc5 16. Nd4 Bxg2 17. Kxg2 Qd5+ 18. Kg1 Qxa2 19. Nc6 a6 20. Ra1 Qc4 21. bxa6 Rxa6 22. Rxa6 Qxa6 23. Qd6 f6 24. Nd4 Qc4 25. Rb1 e5 26. Nf5 Qe6 27. Qxe6+ Nxe6 28. Rxb6 Kf7 29. Rb7+ Kg6 30. Nh4+ Kg5 31. Re7 Nd4 32. e3 Nf5 33. Nxf5 Kxf5 34. Rxg7 Rh8 35. Kg2 Ke6 36. Ra7 h5 37. h4 Kf5 38. Ra6 Rh6 39. Kf3 e4+ 40. Kg2 Rh8 41. Ra5+ Kg6 42. f3 exf3+ 43. Kxf3 Rd8 44. Kf4 Rd1 45. e4 Rf1+ 46. Ke3 Re1+ 47. Kf3 Kg7 48. Rxh5 Rf1+ 49. Ke2 Rg1 50. Kf2 Ra1 51. Rf5 Ra2+ 52. Kf3 Ra3+ 53. Kg4 Ra4 54. Rf4 Ra6 55. Rf5 Ra1 56. Rb5 Rc1 57. Rb3 Re1 58. Rb7+ Kh6 59. Kf4 Rf1+ 60. Kg4 Kg6 61. Rb3 Re1 62. Kf4 Rf1+ 63. Rf3 Rb1 64. e5 fxe5+ 65. Kxe5 Kh5 66. Kf4 Kg6 67. Kg4 Rb4+ 68. Rf4 Rb5 69. Kh3 Kh6 70. Rf3 Ra5 71. g4 Rb5 72. Rf6+ Kh7 73. h5 Rb3+ 74. Kh4 Kh8 75. Rf7 Rc3 76. g5 Rc5 77. h6 Rc8 78. Kh5 Ra8 79. Kg6 Ra6+ 80. Rf6 Ra8 81. Kf7 Rg8 82. g6 Rb8 83. Ke7 Ra8 84. Rd6 Rf8 85. g7+ Kh7 86. gxf8R 1/2-1/2

[Event "Da Qing U20 op-B"]
[Site "Da Qing"]
[Date "2019.01.23"]
[Round "8"]
[White "Sun, Jiahao"]
[Black "Tikhomirov, Ivan"]
[Result "0-1"]
[ECO "A52"]
[BlackElo "1537"]
[PlyCount "16"]
[EventDate "2019.01.20"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CHN"]
[SourceTitle "CBM 188 Extra"]
[Source "ChessBase"]
[SourceDate "2019.02.26"]
[SourceVersion "1"]
[SourceVersionDate "2019.02.26"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. Nf3 Nc6 5. Bf4 Bb4+ 6. Nbd2 Qe7 7. a3 Ngxe5 8. axb4 Nd3# 0-1

[Event "Da Qing U20 op-B"]
[Site "Da Qing"]
[Date "2019.01.22"]
[Round "5"]
[White "Li, Chenru"]
[Black "Sun, Jiahao"]
[Result "0-1"]
[ECO "B78"]
[PlyCount "70"]
[EventDate "2019.01.20"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CHN"]
[SourceTitle "CBM 188 Extra"]
[Source "ChessBase"]
[SourceDate "2019.02.26"]
[SourceVersion "1"]
[SourceVersionDate "2019.02.26"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 Nc6 8. Bc4 0-0 9. Qd2 Bd7 10. 0-0-0 Rc8 11. Bb3 Ne5 12. Bh6 Nc4 13. Bxc4 Rxc4 14. Qe3 Qb6 15. h4 Bxh6 16. Qxh6 Rxd4 17. Rdg1 Rb4 18. b3 Rc8 19. Nd5 Nxd5 20. exd5 Qf2 21. Qd2 Qxd2+ 22. Kxd2 Rb6 23. h5 Bf5 24. c4 g5 25. f4 g4 26. Re1 e6 27. dxe6 Bxe6 28. Rhf1 Rc5 29. h6 d5 30. f5 Bd7 31. Re7 Rd6 32. Rfe1 dxc4+ 33. Kc3 cxb3+ 34. Kxb3 Rb6+ 35. Ka3 Ra5# 0-1

[Event "Da Qing U20 op-B"]
[Site "Da Qing"]
[Date "2019.01.22"]
[Round "6"]
[White "Sun, Jiahao"]
[Black "Chen, Junyu"]
[Result "1/2-1/2"]
[ECO "E07"]
[PlyCount "80"]
[EventDate "2019.01.20"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CHN"]
[SourceTitle "CBM 188 Extra"]
[Source "ChessBase"]
[SourceDate "2019.02.26"]
[SourceVersion "1"]
[SourceVersionDate "2019.02.26"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 Be7 4. g3 0-0 5. Bg2 d5 6. Nbd2 Nbd7 7. 0-0 c5 8. e3 cxd4 9. Nxd4 Ne5 10. cxd5 exd5 11. N2f3 Bg4 12. h3 Nxf3+ 13. Bxf3 Bxh3 14. Bg2 Bxg2 15. Kxg2 Qd7 16. b3 Rac8 17. Bb2 a6 18. Qd3 Bb4 19. Rh1 Qe7 20. Nf5 Qe4+ 21. Qxe4 dxe4 22. a3 Bc3 23. Ne7+ Kh8 24. Nxc8 Bxb2 25. Ra2 Bxa3 26. Rxa3 Rxc8 27. Rd1 g6 28. Raa1 Kg7 29. Rac1 Ra8 30. Rc7 b5 31. Rdc1 a5 32. R7c5 a4 33. Ra1 Rd8 34. bxa4 bxa4 35. Rxa4 Re8 36. Rcc4 Kh6 37. Kh3 g5 38. g4 Kg7 39. Ra5 h6 40. Kg3 Rd8 1/2-1/2

[Event "Da Qing U20 op-B"]
[Site "Da Qing"]
[Date "2019.01.21"]
[Round "3"]
[White "Jin, Pinyan"]
[Black "Sun, Jiahao"]
[Result "1-0"]
[ECO "B78"]
[WhiteElo "1304"]
[PlyCount "55"]
[EventDate "2019.01.20"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CHN"]
[SourceTitle "CBM 188 Extra"]
[Source "ChessBase"]
[SourceDate "2019.02.26"]
[SourceVersion "1"]
[SourceVersionDate "2019.02.26"]
[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. Bc4 Nc6 9. Qd2 Bd7 10. 0-0-0 Rc8 11. Bb3 Ne5 12. h4 Nc4 13. Bxc4 Rxc4 14. g4 a6 15. h5 Qc7 16. hxg6 fxg6 17. Nde2 b5 18. Bh6 Rf7 19. e5 dxe5 20. g5 b4 21. gxf6 exf6 22. Nd5 Qa5 23. Bxg7 Qxa2 24. Nxf6+ Rxf6 25. Qxd7 Rf7 26. Qe8+ Kxg7 27. Rxh7+ Kxh7 28. Rh1+ 1-0

[Event "Da Qing U20 op-B"]
[Site "Da Qing"]
[Date "2019.01.21"]
[Round "4"]
[White "Sun, Jiahao"]
[Black "Chua, Siang Zhe"]
[Result "1-0"]
[ECO "D63"]
[BlackElo "1025"]
[PlyCount "121"]
[EventDate "2019.01.20"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CHN"]
[SourceTitle "CBM 188 Extra"]
[Source "ChessBase"]
[SourceDate "2019.02.26"]
[SourceVersion "1"]
[SourceVersionDate "2019.02.26"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. Nf3 0-0 6. e3 Nbd7 7. Rc1 c5 8. dxc5 Bxc5 9. cxd5 Qe7 10. Bc4 exd5 11. Nxd5 Qd8 12. 0-0 Be7 13. Nxe7+ Qxe7 14. Qe2 Nb6 15. Bb3 Bg4 16. h3 Bh5 17. Rfd1 Rac8 18. Bf4 Rfe8 19. Rxc8 Nxc8 20. Ba4 Rd8 21. Rxd8+ Qxd8 22. Qd1 Qxd1+ 23. Bxd1 Nb6 24. g4 Bg6 25. Ne5 Be4 26. Bf3 Bxf3 27. Nxf3 Nfd5 28. Be5 f6 29. Bd4 Nc8 30. a3 a6 31. Nd2 Kf7 32. Kg2 Ke6 33. Nc4 Nd6 34. Nxd6 Kxd6 35. Kf3 Nc7 36. Ke4 Nb5 37. h4 g6 38. Bxf6 Ke6 39. Bd4 Kd6 40. a4 Nc7 41. Be5+ Kd7 42. Bxc7 Kxc7 43. Kd5 Kd7 44. b4 b6 45. b5 a5 46. e4 h6 47. f4 h5 48. g5 Ke7 49. f5 Kf7 50. f6 Ke8 51. e5 Kd7 52. e6+ Ke8 53. Kc6 Kf8 54. Kxb6 Kg8 55. Kxa5 Kf8 56. b6 Kg8 57. b7 Kh7 58. Kb6 Kg8 59. b8Q+ Kh7 60. Qc7+ Kh8 61. Qg7# 1-0

[Event "Da Qing U20 op-B"]
[Site "Da Qing"]
[Date "2019.01.20"]
[Round "2"]
[White "Lim, Zen Hong"]
[Black "Sun, Jiahao"]
[Result "1-0"]
[ECO "B73"]
[WhiteElo "1332"]
[PlyCount "79"]
[EventDate "2019.01.20"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CHN"]
[SourceTitle "CBM 188 Extra"]
[Source "ChessBase"]
[SourceDate "2019.02.26"]
[SourceVersion "1"]
[SourceVersionDate "2019.02.26"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. Be2 0-0 8. 0-0 Nc6 9. Nxc6 bxc6 10. Bf3 Nd7 11. Bd4 Ne5 12. Be2 c5 13. Be3 Rb8 14. Rb1 Nc6 15. Qd2 Nd4 16. Bd3 Qa5 17. Nd5 Qd8 18. Bg5 Re8 19. Bh6 e6 20. Bxg7 Kxg7 21. Ne3 Qc7 22. c3 Nc6 23. Ng4 Qe7 24. Qh6+ Kh8 25. f3 Qf8 26. Qh4 Qe7 27. Nf6 h5 28. Qf4 Kg7 29. Nxe8+ Qxe8 30. Qxd6 Bd7 31. Qxc5 Qd8 32. Rfd1 Qc7 33. Bb5 Rb6 34. Bxc6 Rxc6 35. Qd4+ Kg8 36. Qxd7 Qb6+ 37. Qd4 Qa6 38. Qf6 Rc8 39. Rd7 Rf8 40. Rbd1 1-0

[Event "Da Qing U20 op-B"]
[Site "Da Qing"]
[Date "2019.01.20"]
[Round "1"]
[White "Sun, Jiahao"]
[Black "Liu, Jiapeng"]
[Result "0-1"]
[ECO "D53"]
[BlackElo "1429"]
[PlyCount "58"]
[EventDate "2019.01.20"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CHN"]
[SourceTitle "CBM 188 Extra"]
[Source "ChessBase"]
[SourceDate "2019.02.26"]
[SourceVersion "1"]
[SourceVersionDate "2019.02.26"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. Nf3 Nc6 6. e3 0-0 7. a3 b6 8. cxd5 Nxd5 9. Bb5 Nxc3 10. bxc3 Bb7 11. Bxc6 Bxc6 12. Bxe7 Qxe7 13. 0-0 Rad8 14. Qe2 f6 15. c4 Bb7 16. e4 c5 17. d5 exd5 18. cxd5 Bxd5 19. Rfe1 Bb7 20. Qc4+ Qf7 21. Qa4 Rd6 22. e5 fxe5 23. Rxe5 Bxf3 24. gxf3 Rg6+ 25. Kf1 Qxf3 26. Ra2 Qh1+ 27. Ke2 Qxh2 28. Qc4+ Kh8 29. Qd5 Qxf2+ 0-1

