[Event "Da Qing U20 op-B"]
[Site "Da Qing"]
[Date "2019.01.24"]
[Round "9"]
[White "Li, Yifei"]
[Black "Kaminskii, Ilia"]
[Result "0-1"]
[ECO "C42"]
[BlackElo "1336"]
[PlyCount "107"]
[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 Nf6 3. Nc3 Bb4 4. d3 d6 5. h3 Be6 6. Bd2 Nc6 7. Be2 Qd7 8. 0-0 h6 9. a3 Bxc3 10. Bxc3 g5 11. Nh2 h5 12. f3 0-0-0 13. d4 exd4 14. Bxd4 Rh6 15. Be3 Rg6 16. Bd3 Rg7 17. Qe2 g4 18. h4 gxf3 19. Qxf3 Ng4 20. b4 Nce5 21. Qe2 Nxh2 22. Kxh2 Ng4+ 23. Kh1 Nxe3 24. Qxe3 Kb8 25. Rf2 Rdg8 26. a4 Qe7 27. Qf4 Rg4 28. Qf6 Rxh4+ 29. Kg1 Qxf6 30. Rxf6 Rhg4 31. Rf2 h4 32. Kh2 Rg3 33. Kh1 Rh8 34. Ra3 h3 35. gxh3 Rgxh3+ 36. Kg1 d5 37. Re2 Rh1+ 38. Kf2 R8h2+ 39. Ke3 dxe4 40. Kxe4 Rxe2+ 41. Bxe2 Rh4+ 42. Ke5 Rxb4 43. Ra1 c6 44. Bh5 Rc4 45. Kf6 Rxc2 46. Bxf7 Bxf7 47. Kxf7 Re2 48. Rc1 Kc7 49. a5 b6 50. axb6+ axb6 51. Kf6 b5 52. Rh1 Kb6 53. Rh4 c5 54. Rh1 0-1

[Event "Da Qing U20 op-B"]
[Site "Da Qing"]
[Date "2019.01.23"]
[Round "8"]
[White "Chua, Siang Zhe"]
[Black "Li, Yifei"]
[Result "0-1"]
[ECO "C50"]
[WhiteElo "1025"]
[PlyCount "98"]
[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. Bc4 Bc5 4. Nc3 h6 5. 0-0 Nf6 6. d3 0-0 7. a3 d6 8. Na4 Bb6 9. Nxb6 axb6 10. Be3 Bg4 11. h3 Bh5 12. c3 d5 13. exd5 Nxd5 14. Bd2 Nf6 15. Re1 Re8 16. Bb5 Qd6 17. g4 Bxg4 18. hxg4 Nxg4 19. c4 Qg6 20. Kf1 Qf5 21. Qe2 Re6 22. Nh4 Qh5 23. Qe4 Qxh4 24. Re2 Rd8 25. Bc3 Nd4 26. Rd2 Nb3 27. Re2 Nxa1 28. Ba4 Nh2+ 29. Ke1 Qxe4 30. Rxe4 Rxd3 31. Ke2 Rd8 32. b4 Ra8 33. Bd1 Rxa3 34. Be1 Nb3 35. Bd2 Nxd2 36. Kxd2 Rd6+ 37. Kc2 Rad3 38. Re1 Rd2+ 39. Kc1 Rxf2 40. Rh1 e4 41. Bc2 e3 42. Re1 e2 43. Kb1 Nf3 44. Rc1 e1Q 45. Rxe1 Nxe1 46. Kb2 Rxc2+ 47. Kb3 Rd3+ 48. Ka4 c6 49. b5 Rxc4# 0-1

[Event "Da Qing U20 op-B"]
[Site "Da Qing"]
[Date "2019.01.23"]
[Round "7"]
[White "Li, Yifei"]
[Black "Zhou, Shuhan"]
[Result "1-0"]
[ECO "B08"]
[PlyCount "73"]
[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. d4 Nf6 3. Nc3 g6 4. Nf3 Bg7 5. h3 0-0 6. Bd3 c6 7. 0-0 Qc7 8. Re1 Nbd7 9. Be3 b5 10. a3 a6 11. Qd2 Bb7 12. Bh6 Rfe8 13. Bxg7 Kxg7 14. e5 Nd5 15. e6 fxe6 16. Ng5 Nf8 17. Rxe6 Kg8 18. Nxd5 cxd5 19. Qf4 Bc8 20. Qf7+ Kh8 21. Qxe8 Bxe6 22. Qxa8 Qc8 23. Qxc8 Bxc8 24. Re1 h6 25. Nf7+ Kg8 26. Nxh6+ Kg7 27. Ng4 Bxg4 28. hxg4 Kf7 29. b3 g5 30. c4 dxc4 31. bxc4 bxc4 32. Bxc4+ Ke8 33. Bxa6 Kd7 34. Rc1 Ne6 35. Bc8+ Kd8 36. Bxe6 Ke8 37. Rc8# 1-0

[Event "Da Qing U20 op-B"]
[Site "Da Qing"]
[Date "2019.01.22"]
[Round "5"]
[White "Li, Yifei"]
[Black "Miao, Yuming"]
[Result "0-1"]
[ECO "C54"]
[BlackElo "1517"]
[PlyCount "86"]
[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. Bc4 Bc5 4. c3 Nf6 5. d3 d6 6. Bb3 Bg4 7. 0-0 Qd7 8. Be3 Bb6 9. Nbd2 0-0 10. h3 Be6 11. Bxe6 fxe6 12. Nc4 h6 13. Qd2 Qf7 14. Rfe1 Nh5 15. Bxh6 Qg6 16. Bg5 Rf7 17. Nxb6 axb6 18. Nh4 Qh7 19. d4 exd4 20. cxd4 Raf8 21. Re2 Nf4 22. Bxf4 Rxf4 23. g3 Rxe4 24. Rxe4 Qxe4 25. Rd1 Qd5 26. b3 Rf6 27. Ng2 Qf3 28. Qe3 Qxd1+ 29. Kh2 Qxd4 30. Qe2 Qxf2 31. Qe4 Ne5 32. h4 Qf3 33. Qa4 Rg6 34. Qe8+ Kh7 35. Qxg6+ Nxg6 36. a3 Ne5 37. b4 Nc6 38. g4 Nd4 39. g5 Ne2 40. g6+ Kxg6 41. h5+ Kxh5 42. a4 Qg3+ 43. Kh1 Qh3# 0-1

[Event "Da Qing U20 op-B"]
[Site "Da Qing"]
[Date "2019.01.22"]
[Round "6"]
[White "Wang, Yinuo"]
[Black "Li, Yifei"]
[Result "1-0"]
[ECO "C68"]
[PlyCount "109"]
[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 a6 4. Bxc6 dxc6 5. 0-0 Bg4 6. h3 Bxf3 7. Qxf3 Nf6 8. d3 h6 9. Nd2 Bd6 10. Nc4 Qd7 11. Qg3 Nh5 12. Qh4 Nf4 13. Bxf4 exf4 14. Nxd6+ Qxd6 15. e5 g5 16. exd6 gxh4 17. dxc7 Kd7 18. Rfe1 Rae8 19. Kf1 Kxc7 20. Rxe8 Rxe8 21. Re1 Rxe1+ 22. Kxe1 Kd6 23. Kd2 b5 24. f3 Kd5 25. Kc3 c5 26. b4 f6 27. bxc5 Kxc5 28. a3 a5 29. Kb3 Kd4 30. c4 bxc4+ 31. dxc4 Kc5 32. Kc3 a4 33. Kd3 h5 34. Kc3 f5 35. Kd3 Kd6 36. Kd4 Kc6 37. c5 Kd7 38. Kc4 Kc6 39. Kb4 Kb7 40. Kxa4 Kc7 41. Kb5 Kb7 42. a4 Kc7 43. a5 Kb8 44. Kb6 Kc8 45. a6 Kb8 46. c6 Ka8 47. Kc7 Ka7 48. Kd7 Kb8 49. c7+ Ka7 50. c8Q Kb6 51. Qb7+ Kc5 52. a7 Kc4 53. a8Q Kd4 54. Qa3 Ke5 55. Qd6# 1-0

[Event "Da Qing U20 op-B"]
[Site "Da Qing"]
[Date "2019.01.21"]
[Round "4"]
[White "Lim, Zen Hong"]
[Black "Li, Yifei"]
[Result "1/2-1/2"]
[ECO "C78"]
[WhiteElo "1332"]
[PlyCount "114"]
[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 a6 4. Ba4 Nf6 5. 0-0 b5 6. Bb3 h6 7. Re1 d6 8. c3 Be7 9. d4 0-0 10. a4 Bg4 11. h3 Bxf3 12. gxf3 Qd7 13. Kh2 exd4 14. cxd4 Rab8 15. Rg1 Kh8 16. Be3 Nh7 17. Bc2 Ng5 18. Rg3 Nb4 19. f4 Nxc2 20. Qxc2 Nh7 21. Nd2 f5 22. Rag1 Rf7 23. Qb3 Rbf8 24. e5 bxa4 25. Qc4 d5 26. Qxa6 Qe8 27. Nf3 Rg8 28. e6 Rf6 29. Ne5 Nf8 30. Nf7+ Kh7 31. Ne5 Nxe6 32. Qd3 c6 33. Qa6 c5 34. Qd3 cxd4 35. Rg6 dxe3 36. Rxf6 Bxf6 37. Qxf5+ g6 38. Qxf6 exf2 39. Rf1 Rf8 40. Qh4 Nxf4 41. Ng4 Nh5 42. Rxf2 Rxf2+ 43. Qxf2 Qb8+ 44. Kg2 Nf4+ 45. Kh1 g5 46. Qc2+ Kg7 47. Qc3+ Kh7 48. Qf6 d4 49. Qxh6+ Kg8 50. Qxg5+ Kf8 51. Qf6+ Kg8 52. Qg5+ Kh8 53. Qh4+ Kg8 54. Qg5+ Kf8 55. Qf5+ Ke8 56. Qe4+ Kf8 57. Qf5+ Kg8 1/2-1/2

[Event "Da Qing U20 op-B"]
[Site "Da Qing"]
[Date "2019.01.21"]
[Round "3"]
[White "Xu, Yingming"]
[Black "Li, Yifei"]
[Result "1-0"]
[ECO "C28"]
[WhiteElo "1673"]
[PlyCount "73"]
[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. Nc3 Nc6 3. Bc4 Nf6 4. d3 h6 5. f4 Bb4 6. Nf3 d6 7. a3 Ba5 8. 0-0 0-0 9. Kh1 Bg4 10. Bd2 Nd4 11. fxe5 dxe5 12. Ne2 Bb6 13. Nexd4 Bxd4 14. c3 Bb6 15. Qe1 Qe7 16. Qg3 Rfe8 17. Nh4 Kh8 18. Nf5 Bxf5 19. Rxf5 Rad8 20. Raf1 Rd6 21. Qh3 Rf8 22. Bg5 Kh7 23. Qh4 a6 24. Rxf6 Qd7 25. Rxf7 Rxf7 26. Rxf7 Qa4 27. Rf1 Rg6 28. Bc1 Qc2 29. Qh3 Rf6 30. g4 Rf2 31. g5 Qe2 32. g6+ Kxg6 33. Qe6+ Rf6 34. Qe8+ Kh7 35. Bg8+ Kh8 36. Bf7+ Kh7 37. Qg8# 1-0

[Event "Da Qing U20 op-B"]
[Site "Da Qing"]
[Date "2019.01.20"]
[Round "2"]
[White "Li, Yifei"]
[Black "Li, Junhe"]
[Result "1-0"]
[ECO "B53"]
[BlackElo "1392"]
[PlyCount "85"]
[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. Qxd4 Nc6 5. Bb5 Bd7 6. Bxc6 Bxc6 7. Nc3 Nf6 8. 0-0 g6 9. Qd3 Bg7 10. h3 0-0 11. Bg5 Rc8 12. Rfe1 h6 13. Bxf6 Bxf6 14. Re3 Qb6 15. Rb1 Bxc3 16. Qxc3 Ba4 17. Qa3 Bd7 18. Qd3 Qc5 19. c3 Be6 20. a3 Bc4 21. Qd2 Kh7 22. e5 dxe5 23. Nxe5 Rcd8 24. Qc2 e6 25. Rbe1 Rd5 26. b3 Ba6 27. c4 Rd4 28. Rg3 Rg8 29. Nxf7 Rf4 30. Nxh6 Kxh6 31. Qd2 Rgf8 32. Rf3 g5 33. Rxe6+ Kg7 34. Rxf4 Rxf4 35. Qb2+ Kf7 36. Re5 Qd6 37. Rxg5 Re4 38. g3 b5 39. Qc2 Re1+ 40. Kh2 Re6 41. cxb5 Bb7 42. Qc4 Ke7 43. Rg7+ 1-0

[Event "Da Qing U20 op-B"]
[Site "Da Qing"]
[Date "2019.01.20"]
[Round "1"]
[White "Li, Yifei"]
[Black "Tikhomirov, Ivan"]
[Result "0-1"]
[ECO "B53"]
[BlackElo "1537"]
[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. Qxd4 Nc6 5. Bb5 Bd7 6. Bxc6 Bxc6 7. Nc3 Nf6 8. 0-0 g6 9. Qd3 Bg7 10. Bg5 0-0 11. Nd4 Qb6 12. Nxc6 bxc6 13. Rab1 Rab8 14. Kh1 Rfe8 15. f4 Nd7 16. e5 Nc5 17. Qf3 Ne6 18. Bh4 Nd4 19. Qf2 Nf5 20. exd6 Nxh4 21. Qxh4 Bxc3 22. d7 Red8 23. Qxe7 Bb4 24. Qe4 Rxd7 25. f5 Re7 26. Qg4 Rf8 27. f6 Re5 28. Rbd1 Rd8 29. Rxd8+ Qxd8 30. Qxb4 Rb5 31. Qc3 Rf5 32. Kg1 Qb6+ 33. Qc5 Qxc5+ 34. Rf2 Qxf2+ 35. Kh1 Qf1# 0-1

