[Event "Challenge Vienna"]
[Site "Haus des Sports, Prinz-Eugen-Strasse 12, 1040 Wien"]
[Date "2023.02.06"]
[Round "1"]
[Board "1"]
[White "Dragnev, Valentin"]
[Black "Cheng, Bobby"]
[Result "1/2-1/2"]
[ECO "C42"]
[WhiteElo "2565"]
[BlackElo "2574"]
[PlyCount "166"]
[EventDate "2023.02.06"]
[EventRounds "6"]
[EventCountry "AUT"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Bd6 7. O-O O-O 8. c4 c6
9. Re1 Bf5 10. Qb3 Qd7 11. c5 Bc7 12. Nc3 Nxc5 13. Bxf5 Nxb3 14. Bxd7 Nxa1 15. Bf5
Na6 16. Bd2 g6 17. Bd3 Nb4 18. Bf1 Nac2 19. Rc1 a5 20. a3 a4 21. axb4 Nxb4 22. Ra1
Bd6 23. Rxa4 b5 24. Rxa8 Rxa8 25. Ne1 Ra1 26. g3 h5 27. Kg2 Bf8 28. h3 Kh7 29. Be2
Bh6 30. f4 Bg7 31. Nd1 Ra4 32. Kf1 Na6 33. Nc2 b4 34. Bxa6 Rxa6 35. Bxb4 Rb6 36.
Bc3 Bf8 37. Nde3 Bd6 38. h4 Kg7 39. Ke2 Kf6 40. Ng2 Rb8 41. Nge1 Ke7 42. Nd3 f6 43.
Kf3 Rg8 44. Ne3 Ke6 45. f5+ gxf5 46. Nc5+ Bxc5 47. dxc5 Ra8 48. Nc2 Kd7 49. Kf4 Rg8
50. Bxf6 Rg4+ 51. Kf3 Rc4 52. Bc3 Rxc5 53. Na3 Ke6 54. Ke3 d4+ 55. Kxd4 Re5 56. Kd3
Re4 57. Bd2 c5 58. b3 Rd4+ 59. Ke2 Re4+ 60. Kd3 Rd4+ 61. Kc3 Ke5 62. Nc2 Rg4 63.
Bf4+ Rxf4 64. gxf4+ Kxf4 65. Kd3 Kg3 66. Ke2 Kxh4 67. Kf3 Kg5 68. Ne1 Kf6 69. Nd3
Ke6 70. Ke3 Kd5 71. Nf4+ Kc6 72. Kd3 Kb5 73. Kc3 h4 74. Nh3 Kc6 75. Kc4 Kb6 76. Nf4
Kc6 77. Nd5 h3 78. Ne7+ Kd7 79. Nxf5 h2 80. Ng3 Kc6 81. Nh1 Kb6 82. Nf2 Kc6 83. Nh1
Kb6  1/2-1/2

[Event "Challenge Vienna"]
[Site "Haus des Sports, Prinz-Eugen-Strasse 12, 1040 Wien"]
[Date "2023.02.07"]
[Round "2"]
[Board "1"]
[White "Cheng, Bobby"]
[Black "Dragnev, Valentin"]
[Result "1/2-1/2"]
[ECO "E53"]
[WhiteElo "2574"]
[BlackElo "2565"]
[PlyCount "94"]
[EventDate "2023.02.06"]
[EventRounds "6"]
[EventCountry "AUT"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. a3 Bxc3+ 7. bxc3 dxc4 8. Bxc4
c5 9. Nf3 Qc7 10. Be2 b6 11. Bb2 cxd4 12. cxd4 Ba6 13. O-O Bxe2 14. Qxe2 Nbd7 15.
e4 Rfc8 16. Rfc1 Qb7 17. Re1 Qc6 18. Nd2 Qa4 19. Rab1 Rc2 20. Qe3 Rac8 21. h3 h6
22. Nf1 Qa5 23. Qb3 Qg5 24. Ne3 R2c7 25. Qd3 Nh5 26. Qd1 Nf4 27. Kh2 Qh4 28. Qd2
Nf6 29. f3 N6h5 30. d5 exd5 31. exd5 Rd7 32. Rbd1 Rcd8 33. Nf5 Qg5 34. g4 Rxd5 35.
Qc2 Ne6 36. Bc1 Nhf4 37. h4 Qf6 38. Bb2 Qxb2 39. Qxb2 Rxd1 40. Rxd1 Rxd1 41. Qe5
Rd2+ 42. Kg1 Kh7 43. Qb8 Nh3+ 44. Kh1 Nf2+ 45. Kg1 Nh3+ 46. Kh1 Nf2+ 47. Kg1 Nh3+
 1/2-1/2

[Event "Challenge Vienna"]
[Site "Haus des Sports, Prinz-Eugen-Strasse 12, 1040 Wien"]
[Date "2023.02.08"]
[Round "3"]
[Board "1"]
[White "Dragnev, Valentin"]
[Black "Cheng, Bobby"]
[Result "1-0"]
[ECO "C42"]
[WhiteElo "2565"]
[BlackElo "2574"]
[PlyCount "119"]
[EventDate "2023.02.06"]
[EventRounds "6"]
[EventCountry "AUT"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Bd6 7. O-O O-O 8. c4
c6 9. Re1 Bf5 10. cxd5 cxd5 11. Nc3 Nxc3 12. bxc3 Bxd3 13. Qxd3 Nd7 14. Qf5 Nb6 15.
Ng5 g6 16. Qh3 h5 17. g4 Qd7 18. gxh5 Rfe8 19. Bd2 Qxh3 20. Nxh3 gxh5 21. Bf4 Bf8
22. Kg2 f6 23. Reb1 Rac8 24. a4 Re7 25. a5 Nc4 26. a6 b6 27. Kf1 Na5 28. Bd2 Kf7
29. Rb5 Rd7 30. Ke2 Nc4 31. Kd3 Nxd2 32. Kxd2 Rdc7 33. Rb3 Bd6 34. Ng1 Bxh2 35. Ne2
Re7 36. Kd3 Rce8 37. Rb2 Re4 38. Rh1 Rh4 39. Rbb1 Ree4 40. f3 Re8 41. Rbf1 Rh3 42.
Rf2 Bg3 43. Rxh3 Bxf2 44. Rxh5 Re3+ 45. Kd2 Ke8 46. Rf5 Re6 47. Rxd5 b5 48. Rxb5
Rxa6 49. Rb7 Kd8 50. Nf4 Kc8 51. Rf7 Bh4 52. Nd5 Rd6 53. Ne7+ Kb8 54. d5 Bf2 55.
Nc6+ Kc8 56. c4 a6 57. Kc3 Bc5 58. Kb3 Bb6 59. Kb4 Be3 60. Ka5  1-0

[Event "Challenge Vienna"]
[Site "Haus des Sports, Prinz-Eugen-Strasse 12, 1040 Wien"]
[Date "2023.02.09"]
[Round "4"]
[Board "1"]
[White "Cheng, Bobby"]
[Black "Dragnev, Valentin"]
[Result "1/2-1/2"]
[ECO "D40"]
[WhiteElo "2574"]
[BlackElo "2565"]
[PlyCount "69"]
[EventDate "2023.02.06"]
[EventRounds "6"]
[EventCountry "AUT"]

1. d4 d5 2. c4 e6 3. Nc3 c5 4. e3 Nf6 5. Nf3 Nc6 6. a3 dxc4 7. Bxc4 a6 8. Bd3 cxd4
9. exd4 g6 10. Bg5 Bg7 11. Ne4 h6 12. Bxf6 Bxf6 13. Nxf6+ Qxf6 14. O-O O-O 15. Be4
Bd7 16. Qd2 Kg7 17. Rfd1 Rfd8 18. Rac1 Be8 19. h3 Rd6 20. Qe3 Rad8 21. Bxc6 Bxc6
22. Ne5 h5 23. b4 Qh4 24. Rc4 Rd5 25. Nxc6 bxc6 26. Rxc6 a5 27. Rc5 axb4 28. Rxd5
Rxd5 29. axb4 e5 30. b5 exd4 31. Qb3 Rd7 32. b6 Qe4 33. Qd3 Qxd3 34. Rxd3 Rd6 35.
b7  1/2-1/2

[Event "Challenge Vienna"]
[Site "Haus des Sports, Prinz-Eugen-Strasse 12, 1040 Wien"]
[Date "2023.02.10"]
[Round "5"]
[Board "1"]
[White "Dragnev, Valentin"]
[Black "Cheng, Bobby"]
[Result "1-0"]
[ECO "B90"]
[WhiteElo "2565"]
[BlackElo "2574"]
[PlyCount "133"]
[EventDate "2023.02.06"]
[EventRounds "6"]
[EventCountry "AUT"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e5 7. Nf3 Be7 8. Bc4 O-O
9. Bb3 h6 10. Nh4 Nc6 11. Ng6 Re8 12. Qd2 Nd4 13. Nxe7+ Qxe7 14. O-O-O Nxb3+ 15.
axb3 b5 16. Qxd6 Qb7 17. f3 Be6 18. Kb1 Rac8 19. Qb6 Qxb6 20. Bxb6 Rc6 21. Ba5 Rec8
22. Rd2 g5 23. Na2 Ra8 24. Rhd1 Ra7 25. Rd8+ Kg7 26. Nb4 Rc8 27. Rxc8 Bxc8 28. Rd8
Be6 29. Rd6 g4 30. Kc1 h5 31. Nd3 h4 32. Nxe5 h3 33. Rd2 Kh7 34. Nxg4 Nxg4 35. fxg4
Bxg4 36. gxh3 Bxh3 37. Rd3 Bg2 38. e5 Re7 39. Bc3 Re6 40. Rd6 Kg6 41. Kd2 Be4 42.
Bd4 Bc6 43. Kc3 Be4 44. Kd2 Bc6 45. Bf2 Kf5 46. Bg3 Ke4 47. Kc3 a5 48. Rd4+ Ke3 49.
Rd3+ Ke2 50. Kd4 Re8 51. Rc3 Rc8 52. Bh4 Kd1 53. Be7 Kc1 54. h4 Kxb2 55. h5 b4 56.
Rc5 Bd7 57. Rxc8 Bxc8 58. e6 Bxe6 59. Ke5 Bxb3 60. cxb3 Kxb3 61. h6 Ka2 62. Bf6 b3
63. Kf4 a4 64. h7 a3 65. h8=Q b2 66. Bxb2 axb2 67. Qa8+  1-0

[Event "Challenge Vienna"]
[Site "Haus des Sports, Prinz-Eugen-Strasse 12, 1040 Wien"]
[Date "2023.02.11"]
[Round "6"]
[Board "1"]
[White "Cheng, Bobby"]
[Black "Dragnev, Valentin"]
[Result "1/2-1/2"]
[ECO "D32"]
[WhiteElo "2574"]
[BlackElo "2565"]
[PlyCount "97"]
[EventDate "2023.02.06"]
[EventRounds "6"]
[EventCountry "AUT"]

1. d4 d5 2. c4 e6 3. Nc3 c5 4. cxd5 cxd4 5. Qa4+ Bd7 6. Qxd4 exd5 7. Qxd5 Nf6 8.
Qd1 Bc5 9. Nf3 O-O 10. a3 Qc7 11. e3 Nc6 12. Be2 Rfd8 13. Qc2 Ne5 14. O-O Nxf3+ 15.
Bxf3 Ng4 16. Bxg4 Bxg4 17. e4 Bd4 18. Bg5 Rd7 19. Rfe1 h6 20. Be3 Rad8 21. Qc1 a6
22. Bxd4 Rxd4 23. Nd5 Qxc1 24. Raxc1 Be6 25. Red1 Rxd1+ 26. Rxd1 Bxd5 27. exd5 Kf8
28. d6 Ke8 29. Kf1 Kd7 30. Rc1 Ke6 31. Re1+ Kf6 32. Rd1 Ke6 33. Re1+ Kf6 34. Re7
b5 35. Ra7 Rxd6 36. Ke2 g5 37. g4 Kg6 38. Ke3 f6 39. h3 f5 40. gxf5+ Kxf5 41. Rc7
h5 42. Rc5+ Kg6 43. f4 gxf4+ 44. Kxf4 Rd4+ 45. Ke5 Ra4 46. Rc3 b4 47. Rg3+ Kf7 48.
Rf3+ Kg7 49. Rg3+  1/2-1/2