[Event "CHN-ch sf"]
[Site "Hefei"]
[Date "2023.04.26"]
[Round "7"]
[White "Yang, Haifeng"]
[Black "Cong, Dingzhou"]
[Result "0-1"]
[ECO "D02"]
[BlackElo "1640"]
[PlyCount "92"]
[EventDate "2023.04.23"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "CHN"]
[SourceTitle "CBM 214 Extra"]
[Source "ChessBase"]
[SourceDate "2023.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.07.31"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. Bf4 Bf5 4. e3 e6 5. c3 Bd6 6. Bg3 0-0 7. Qb3 b6 8. Nbd2 c5 9. Nh4 c4 10. Qa4 Bg4 11. b3 cxb3 12. axb3 Ne4 13. Nxe4 dxe4 14. Bxd6 Qxd6 15. h3 Bh5 16. g4 Bg6 17. Bg2 f5 18. Nxg6 hxg6 19. 0-0 Nd7 20. Qa3 Qc7 21. c4 Nf6 22. Qb2 fxg4 23. hxg4 Nxg4 24. f4 Nxe3 25. Bxe4 Nxf1 26. Bxa8 Qxf4 27. Qe2 Qg3+ 28. Kh1 Rf2 29. Qxf2 Qxf2 30. Bg2 Ne3 31. Bc6 Nf5 32. Rg1 Ng3+ 33. Rxg3 Qxg3 34. d5 exd5 35. cxd5 Qxb3 36. d6 Qd1+ 37. Kh2 Qxd6+ 38. Kh3 Qxc6 39. Kh4 a5 40. Kh3 a4 41. Kg4 a3 42. Kg3 a2 43. Kg4 a1Q 44. Kg3 Qg1+ 45. Kf4 Qf6+ 46. Ke4 Qgd4# 0-1

[Event "CHN-ch sf"]
[Site "Hefei"]
[Date "2023.04.25"]
[Round "5"]
[White "Yang, Haifeng"]
[Black "Yang, Zilong"]
[Result "0-1"]
[ECO "E14"]
[BlackElo "1694"]
[PlyCount "148"]
[EventDate "2023.04.23"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "CHN"]
[SourceTitle "CBM 214 Extra"]
[Source "ChessBase"]
[SourceDate "2023.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.07.31"]
[SourceQuality "1"]

1. Nf3 Nf6 2. d4 e6 3. e3 b6 4. b3 Bb7 5. Nbd2 Be7 6. Bb2 0-0 7. Bd3 c5 8. 0-0 d6 9. c4 Nbd7 10. Qc2 h6 11. h3 Rc8 12. Rfe1 Qc7 13. Rac1 Rfd8 14. a3 a6 15. Qd1 Qb8 16. Qe2 a5 17. Bb1 Ba6 18. e4 cxd4 19. Nxd4 Bf8 20. f4 g6 21. f5 e5 22. N4f3 g5 23. h4 g4 24. Nh2 h5 25. Ndf1 Bh6 26. Rcd1 a4 27. Bc1 Bxc1 28. Rxc1 axb3 29. Ne3 b5 30. Nd5 Kh7 31. Qd2 Rg8 32. Ne7 bxc4 33. Nxg8 Kxg8 34. Nf1 Qb6+ 35. Kh2 Qc5 36. Rc3 Qd4 37. Rec1 Kh7 38. Rd1 Qxd2 39. Rxd2 Rc6 40. Rb2 Nc5 41. Nd2 Na4 42. Rbxb3 Nxc3 43. Rxc3 Nd7 44. Bc2 Nb6 45. Nf1 d5 46. exd5 Nxd5 47. Be4 Nxc3 48. Bxc6 Nb1 49. a4 c3 50. Ne3 Bd3 51. a5 Na3 52. Ba4 c2 53. Nxc2 Nxc2 54. Kg3 Nb4 55. Bd7 Kg7 56. Kf2 Kf6 57. Ke3 Bxf5 58. Bb5 Bc8 59. g3 Ba6 60. Ba4 Nd5+ 61. Kd2 e4 62. Bb3 Ke5 63. Ke1 Kd4 64. Kd2 e3+ 65. Ke1 f5 66. Kd1 f4 67. Bxd5 Kxd5 68. gxf4 g3 69. Kc2 e2 70. f5 e1Q 71. f6 g2 72. f7 g1Q 73. f8Q Qb1+ 74. Kd2 Qge1# 0-1

[Event "CHN-ch sf"]
[Site "Hefei"]
[Date "2023.04.24"]
[Round "4"]
[White "Gu, Xianghan"]
[Black "Yang, Haifeng"]
[Result "1-0"]
[ECO "B00"]
[WhiteElo "1798"]
[PlyCount "59"]
[EventDate "2023.04.23"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "CHN"]
[SourceTitle "CBM 214 Extra"]
[Source "ChessBase"]
[SourceDate "2023.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.07.31"]
[SourceQuality "1"]

1. e4 b6 2. d4 Bb7 3. Bd3 Nf6 4. Qe2 e6 5. Nf3 d5 6. e5 Nfd7 7. 0-0 c5 8. c3 Nc6 9. a3 Be7 10. b4 Qc7 11. Bb2 a5 12. b5 c4 13. bxc6 cxd3 14. cxb7 dxe2 15. bxa8Q+ Nb8 16. Re1 0-0 17. c4 Qd7 18. cxd5 exd5 19. Nc3 Nc6 20. Qa6 g5 21. Nxe2 g4 22. Nd2 Qf5 23. Nf1 h5 24. Ne3 Qg6 25. Nf4 Qh6 26. Nfxd5 Bd8 27. Nf6+ Kh8 28. d5 Nxe5 29. Bxe5 Bxf6 30. Qxb6 1-0

[Event "CHN-ch sf"]
[Site "Hefei"]
[Date "2023.04.24"]
[Round "3"]
[White "Ye, Fan"]
[Black "Yang, Haifeng"]
[Result "0-1"]
[ECO "B00"]
[WhiteElo "1638"]
[PlyCount "82"]
[EventDate "2023.04.23"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "CHN"]
[SourceTitle "CBM 214 Extra"]
[Source "ChessBase"]
[SourceDate "2023.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.07.31"]
[SourceQuality "1"]

1. e4 b6 2. d4 Bb7 3. Nc3 e6 4. h4 Be7 5. h5 h6 6. Be3 Nf6 7. e5 Nd5 8. Nxd5 Bxd5 9. Qg4 Bf8 10. c4 Bb7 11. 0-0-0 Nc6 12. Nf3 Qe7 13. d5 exd5 14. cxd5 Qb4 15. Qg3 Ne7 16. a3 Qa4 17. Rh4 Qa5 18. Nd4 Bxd5 19. Nb5 Kd8 20. Bd2 Qa6 21. Bb4 Qb7 22. Bxe7+ Kxe7 23. f4 Qc6+ 24. Nc3 Be6 25. Bb5 Qb7 26. Qd3 c6 27. Ba4 b5 28. f5 Bc4 29. Rxc4 bxc4 30. Qxc4 Rb8 31. b4 Qb6 32. Bb3 Rb7 33. Rd2 Kd8 34. e6 fxe6 35. fxe6 d5 36. Nxd5 cxd5 37. Qxd5+ Kc8 38. Rc2+ Kb8 39. Rc6 Qe3+ 40. Kb2 Be7 41. Rc3 Bf6 0-1

