[Event "Da Qing U20 op-B"]
[Site "Da Qing"]
[Date "2019.01.24"]
[Round "9"]
[White "Wu, Siqi"]
[Black "Xu, Ri"]
[Result "1-0"]
[ECO "C48"]
[PlyCount "83"]
[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 e5 2. Nf3 Nc6 3. Bb5 d6 4. h3 Nf6 5. Nc3 Be7 6. 0-0 Bd7 7. d3 h6 8. Be3 a6 9. Bc4 Na5 10. Nd2 Nxc4 11. Nxc4 b5 12. Nd2 0-0 13. f4 exf4 14. Bxf4 Nh5 15. Qxh5 f5 16. Nd5 Bh4 17. Be3 c6 18. Nb6 Rb8 19. Nxd7 Qxd7 20. Qxh4 d5 21. exf5 Rxf5 22. Rxf5 Qxf5 23. Qf4 Qh5 24. Qxb8+ Kh7 25. Rf1 Qe2 26. Qf4 a5 27. Qf3 Qxf3 28. Rxf3 b4 29. Rf7 Kg6 30. Ra7 Kf5 31. Rxa5 g5 32. Rc5 h5 33. a4 bxa3 34. bxa3 Ke5 35. a4 Kd6 36. a5 g4 37. hxg4 hxg4 38. a6 Ke5 39. a7 Kf5 40. a8Q Kg6 41. Qxc6+ Kh5 42. Qh6# 1-0

[Event "Da Qing U20 op-B"]
[Site "Da Qing"]
[Date "2019.01.23"]
[Round "7"]
[White "Ning, Jiayu"]
[Black "Xu, Ri"]
[Result "1-0"]
[ECO "A07"]
[PlyCount "117"]
[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. g3 e5 2. Bg2 Nf6 3. d3 Nc6 4. Nf3 d5 5. 0-0 Be7 6. c4 dxc4 7. dxc4 Qxd1 8. Rxd1 0-0 9. Nc3 Bg4 10. Bg5 Bxf3 11. Bxf3 h6 12. Bxf6 Bxf6 13. e3 e4 14. Bxe4 Bxc3 15. bxc3 f5 16. Bd5+ Kh8 17. Bxc6 bxc6 18. Rd7 Rac8 19. Rad1 Kg8 20. Kg2 Rf7 21. Kf3 Rxd7 22. Rxd7 g5 23. e4 fxe4+ 24. Kxe4 Re8+ 25. Kd3 Rf8 26. Ke2 Re8+ 27. Kf3 g4+ 28. Kxg4 Re2 29. Rxc7 Rxf2 30. Rxa7 Rxh2 31. a4 h5+ 32. Kg5 Rh3 33. a5 Rxg3+ 34. Kxh5 Rxc3 35. a6 Rxc4 36. Rb7 Ra4 37. a7 Ra5+ 38. Kg4 c5 39. Rb8+ Kf7 40. a8Q Rxa8 41. Rxa8 Ke6 42. Rc8 Kd5 43. Kf3 Kd4 44. Ke2 c4 45. Kd2 c3+ 46. Rxc3 Kd5 47. Kd3 Ke5 48. Rc4 Kd5 49. Rh4 Ke5 50. Ra4 Kf5 51. Ke3 Kg5 52. Kf3 Kh5 53. Rg4 Kh6 54. Kf4 Kh5 55. Rg1 Kh6 56. Kf5 Kh7 57. Kf6 Kh8 58. Kf7 Kh7 59. Rh1# 1-0

[Event "Da Qing U20 op-B"]
[Site "Da Qing"]
[Date "2019.01.23"]
[Round "8"]
[White "Xu, Ri"]
[Black "Zhou, Shuhan"]
[Result "0-1"]
[ECO "B07"]
[PlyCount "120"]
[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 d6 2. Nf3 Nf6 3. Bc4 Nxe4 4. c3 Nf6 5. Ng5 e6 6. d4 d5 7. Bb5+ Nc6 8. Bxc6+ bxc6 9. 0-0 Be7 10. Be3 0-0 11. Nd2 Ba6 12. Re1 h6 13. Ngf3 Rb8 14. b3 Ba3 15. c4 dxc4 16. bxc4 Bb4 17. Rb1 Bxd2 18. Rxb8 Qxb8 19. Qxd2 Bxc4 20. Qc2 Bd5 21. Rb1 Qa8 22. Ne5 Be4 23. Nd3 Rb8 24. Rxb8+ Qxb8 25. f3 Bxd3 26. Qxd3 Nd5 27. Bd2 Qb2 28. Be1 Qxa2 29. Qd2 Qxd2 30. Bxd2 Kf8 31. Kf2 Ke7 32. g4 Kd6 33. Kg3 c5 34. dxc5+ Kxc5 35. h4 Kb5 36. f4 a5 37. h5 a4 38. Bc1 Kb4 39. g5 a3 40. Bxa3+ Kxa3 41. Kg4 c5 42. f5 c4 43. f6 Nxf6+ 44. gxf6 gxf6 45. Kf3 c3 46. Ke4 c2 47. Kd4 c1Q 48. Kd3 Qf1+ 49. Ke3 Kb3 50. Kd2 Qf2+ 51. Kd3 Qc2+ 52. Kd4 Qc3+ 53. Ke4 Kc4 54. Kf4 Kd4 55. Kg4 f5+ 56. Kh4 Qe1+ 57. Kh3 f4 58. Kg2 Ke3 59. Kh2 Kf3 60. Kh3 Qg3# 0-1

[Event "Da Qing U20 op-B"]
[Site "Da Qing"]
[Date "2019.01.22"]
[Round "6"]
[White "Kaminskii, Ilia"]
[Black "Xu, Ri"]
[Result "1-0"]
[ECO "D21"]
[WhiteElo "1336"]
[PlyCount "89"]
[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 dxc4 3. Nf3 Bg4 4. e3 e5 5. h3 Bh5 6. g4 Bb4+ 7. Bd2 Bxd2+ 8. Nbxd2 Bg6 9. Nxe5 Ne7 10. Bxc4 0-0 11. f4 Kh8 12. f5 f6 13. Nxg6+ hxg6 14. g5 Nxf5 15. Qc2 Nxe3 16. Qxg6 Nxc4 17. Qh5+ Kg8 18. g6 Re8+ 19. Kd1 Qd7 20. Qh7+ Kf8 21. Qh8+ Ke7 22. Qxg7+ Kd8 23. Qxf6+ Re7 24. Nxc4 Qd5 25. Re1 Nc6 26. Qf8+ Kd7 27. Rxe7+ Nxe7 28. Qf1 Qxd4+ 29. Nd2 Nd5 30. Qf7+ Kc6 31. Qe6+ Kb5 32. a4+ Kb4 33. Qe4 Kc5 34. Rc1+ Nc3+ 35. Rxc3+ Qxc3 36. bxc3 b5 37. Qb4+ Kc6 38. axb5+ Kb6 39. Nc4+ Kb7 40. Qc5 Rd8+ 41. Kc2 Rg8 42. Na5+ Kc8 43. Qc6 a6 44. Qe6+ Kd8 45. Nc6# 1-0

[Event "Da Qing U20 op-B"]
[Site "Da Qing"]
[Date "2019.01.22"]
[Round "5"]
[White "Xu, Ri"]
[Black "Liu, Jiapeng"]
[Result "0-1"]
[ECO "B30"]
[BlackElo "1429"]
[PlyCount "88"]
[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 Nc6 3. Bc4 e6 4. d3 d5 5. exd5 exd5 6. Bb5 Qa5+ 7. Bd2 Qxb5 8. Qe2+ Be7 9. Nc3 Qb6 10. 0-0-0 Be6 11. a3 0-0-0 12. Na4 Qc7 13. Qe1 d4 14. g3 Bd6 15. Ng5 Bd5 16. Rf1 h6 17. Ne4 Bxe4 18. Qxe4 Nf6 19. Qf5+ Qd7 20. Qxd7+ Nxd7 21. b3 b5 22. Nb2 Nb6 23. a4 bxa4 24. bxa4 Nb4 25. a5 N6d5 26. Bxb4 Nxb4 27. Nc4 Bc7 28. Rde1 Rhe8 29. Re4 Rxe4 30. dxe4 Nc6 31. a6 Nb4 32. Re1 d3 33. c3 Nxa6 34. e5 Kb7 35. Kd2 Nb8 36. e6 fxe6 37. Rxe6 Nc6 38. f4 Na5 39. Nxa5+ Bxa5 40. Re3 Bxc3+ 41. Kd1 Kc6 42. Re6+ Kd5 43. Ra6 Re8 44. Kc1 Re1# 0-1

[Event "Da Qing U20 op-B"]
[Site "Da Qing"]
[Date "2019.01.21"]
[Round "3"]
[White "Chua, Siang Zhe"]
[Black "Xu, Ri"]
[Result "0-1"]
[ECO "D20"]
[WhiteElo "1025"]
[PlyCount "134"]
[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 dxc4 3. Nc3 e6 4. a3 c5 5. e3 cxd4 6. exd4 Nf6 7. Bxc4 Nc6 8. Nf3 Na5 9. Ba2 Bd6 10. 0-0 0-0 11. Re1 Re8 12. Ne4 Nxe4 13. Rxe4 b6 14. d5 e5 15. Qe2 Qd7 16. Bd2 f6 17. Bxa5 bxa5 18. Nd4 Bb7 19. Rd1 exd4 20. Rdxd4 f5 21. Rxe8+ Rxe8 22. Qd2 Qe7 23. g3 Qe1+ 24. Qxe1 Rxe1+ 25. Kg2 Re4 26. Rd3 g5 27. Rd2 Kg7 28. Bb1 Re5 29. Ba2 h5 30. Kf3 g4+ 31. Kg2 Kg6 32. Kf1 Kg5 33. Kg2 h4 34. f4+ gxf3+ 35. Kxf3 hxg3 36. hxg3 Kf6 37. Kf2 Re4 38. Kf3 Ke5 39. Rd1 Rd4 40. Re1+ Kf6 41. Re8 Bxd5+ 42. Bxd5 Rxd5 43. Ra8 Rd3+ 44. Kf2 Bxg3+ 45. Ke2 Rb3 46. Rxa7 Rxb2+ 47. Kf3 Rb3+ 48. Ke2 Rxa3 49. Ra6+ Kg5 50. Kd2 Kg4 51. Rc6 Kh3 52. Rh6+ Kg2 53. Re6 f4 54. Re2+ Bf2 55. Re5 f3 56. Kd1 Ra1+ 57. Kd2 Be1+ 58. Rxe1 Rxe1 59. Kxe1 f2+ 60. Kd2 f1Q 61. Ke3 Qc4 62. Kd2 Qb3 63. Ke2 Qc3 64. Kd1 Qb2 65. Ke1 Kf3 66. Kd1 Ke3 67. Ke1 Qe2# 0-1

[Event "Da Qing U20 op-B"]
[Site "Da Qing"]
[Date "2019.01.21"]
[Round "4"]
[White "Xu, Ri"]
[Black "Jin, Pinyan"]
[Result "1-0"]
[ECO "B30"]
[BlackElo "1304"]
[PlyCount "75"]
[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 e6 3. Bc4 Nc6 4. Nc3 Nf6 5. d3 Be7 6. 0-0 0-0 7. Bg5 Nd4 8. Nxd4 cxd4 9. Nb5 e5 10. c3 a6 11. Na3 dxc3 12. Bxf6 gxf6 13. Qc2 cxb2 14. Qxb2 Bc5 15. Rad1 b5 16. Bd5 Rb8 17. Nc2 Kh8 18. Ne3 d6 19. Kh1 Be6 20. Bxe6 fxe6 21. Ng4 Rg8 22. h3 d5 23. f4 Bd4 24. Qe2 exf4 25. Rxf4 dxe4 26. dxe4 Rg6 27. e5 fxe5 28. Nxe5 Qd5 29. Nxg6+ hxg6 30. Rfxd4 Qg5 31. Rg4 Qf5 32. Rxg6 Qxg6 33. Qe5+ Kh7 34. Qxb8 Qc2 35. Rd7+ Kh6 36. Qh8+ Kg6 37. Qh7+ Kg5 38. Qxc2 1-0

[Event "Da Qing U20 op-B"]
[Site "Da Qing"]
[Date "2019.01.20"]
[Round "1"]
[White "Chen, Tzi Xuen"]
[Black "Xu, Ri"]
[Result "1-0"]
[ECO "D20"]
[WhiteElo "1371"]
[PlyCount "69"]
[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 dxc4 3. e4 e5 4. d5 c6 5. Bxc4 b5 6. Bb3 Nf6 7. Nf3 Bc5 8. 0-0 Nxe4 9. Nxe5 Qf6 10. Nd3 Na6 11. Nxc5 Naxc5 12. dxc6 Qxc6 13. Bd5 Qg6 14. Bxa8 Bh3 15. Bxe4 Nxe4 16. Qf3 Bg4 17. Qe3 0-0 18. Nc3 Re8 19. Nxe4 Rxe4 20. Qg5 Qe6 21. Qd8+ Qe8 22. Qxe8+ Rxe8 23. Be3 h6 24. h3 Be2 25. Rfc1 f5 26. Rc7 a5 27. Rac1 Bc4 28. b3 Be6 29. Ra7 a4 30. Rcc7 axb3 31. axb3 Bxb3 32. Rxg7+ Kf8 33. Bc5+ Re7 34. Rgxe7 Bg8 35. Ra8# 1-0

[Event "Da Qing U20 op-B"]
[Site "Da Qing"]
[Date "2019.01.20"]
[Round "2"]
[White "Xu, Ri"]
[Black "Chen, Junyu"]
[Result "0-1"]
[ECO "B30"]
[PlyCount "84"]
[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. Bc4 Nc6 3. Nf3 e5 4. Nc3 Nf6 5. d3 Be7 6. 0-0 0-0 7. h3 d6 8. Bg5 Nh5 9. Bxe7 Qxe7 10. Nd2 Nf4 11. Qf3 Nd4 12. Qg3 Nde2+ 13. Nxe2 Nxe2+ 14. Kh2 Nxg3 15. fxg3 Be6 16. Rf3 a6 17. Bd5 Bxd5 18. exd5 f5 19. Re1 b5 20. c3 Qb7 21. Nb3 Qxd5 22. d4 exd4 23. Rd3 Qf7 24. Rf3 dxc3 25. bxc3 Rae8 26. Rxe8 Rxe8 27. g4 c4 28. Rxf5 Qxf5 29. gxf5 cxb3 30. axb3 Re3 31. c4 Rxb3 32. cxb5 Rxb5 33. g4 Rb3 34. h4 a5 35. g5 a4 36. h5 a3 37. f6 gxf6 38. gxf6 h6 39. f7+ Kxf7 40. Kg1 Rb2 41. Kf1 a2 42. Ke1 a1Q# 0-1

