[Event "1st Prague Challengers"]
[Site "Prague CZE"]
[Date "2019.03.06"]
[Round "1.1"]
[White "Nguyen, Thai Dai Van"]
[Black "Ju, Wenjun"]
[Result "1/2-1/2"]
[WhiteTitle "GM"]
[BlackTitle "GM"]
[WhiteElo "2546"]
[BlackElo "2580"]
[ECO "C42"]
[Opening "Petrov"]
[Variation "Nimzovich attack"]
[WhiteFideId "358878"]
[BlackFideId "8603006"]
[EventDate "2019.03.06"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. Nc3 Nxc3 6. dxc3 Be7 7. Be3 O-O 8.
Qd2 Nd7 9. O-O-O c6 10. Bd3 d5 11. h4 Re8 12. Rde1 Bc5 13. Ng5 h6 14. Bh7+ Kf8
15. Bxc5+ Nxc5 16. Rxe8+ Qxe8 17. Re1 Qd8 18. Qe3 Ne6 19. Nxe6+ Bxe6 20. Qf4 Qf6
21. Qxf6 gxf6 22. Bd3 Ke7 23. c4 dxc4 24. Bxc4 f5 25. g3 Rd8 26. Bd3 Kf6 27. b3
b6 28. Re3 Rd4 29. c3 Rg4 30. f4 Rg8 31. c4 c5 32. Bf1 Rd8 33. Kc2 Rd7 34. Bg2
Rd8 35. Bf3 a5 36. Rd3 Rxd3 37. Kxd3 1/2-1/2

[Event "1st Prague Challengers"]
[Site "Prague CZE"]
[Date "2019.03.06"]
[Round "1.2"]
[White "Paravyan, David"]
[Black "Stocek, Jiri"]
[Result "1-0"]
[WhiteTitle "GM"]
[BlackTitle "GM"]
[WhiteElo "2627"]
[BlackElo "2592"]
[ECO "B62"]
[Opening "Sicilian"]
[Variation "Richter-Rauzer, Keres variation"]
[WhiteFideId "4194985"]
[BlackFideId "304760"]
[EventDate "2019.03.06"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Qd3 a6 8. Nxc6
bxc6 9. O-O-O Qa5 10. Qg3 Rb8 11. Bc4 h6 12. Be3 Nd7 13. Bb3 c5 14. Bf4 e5 15.
Bd2 Qc7 16. Nd5 Qb7 17. Ba5 c4 18. Nc7+ Ke7 19. Bxc4 Qxb2+ 20. Kd2 Qd4+ 21. Qd3
Qc5 22. Qd5 Qxf2+ 23. Kc3 1-0

[Event "1st Prague Challengers"]
[Site "Prague CZE"]
[Date "2019.03.06"]
[Round "1.3"]
[White "Praggnanandhaa, R"]
[Black "Bartel, Mateusz"]
[Result "0-1"]
[WhiteTitle "GM"]
[BlackTitle "GM"]
[WhiteElo "2532"]
[BlackElo "2600"]
[ECO "C77"]
[Opening "Ruy Lopez"]
[Variation "Morphy defence, Duras variation"]
[WhiteFideId "25059530"]
[BlackFideId "1112635"]
[EventDate "2019.03.06"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. d3 d6 6. c4 Be7 7. h3 O-O 8. O-O Nd4
9. Nxd4 exd4 10. Nd2 Rb8 11. f4 b5 12. Bb3 c5 13. e5 Ne8 14. Qh5 bxc4 15. Bxc4
d5 16. Bb3 g6 17. Qf3 Be6 18. f5 gxf5 19. Qe2 Kh8 20. Nf3 Rg8 21. Kh2 Rg6 22.
Bf4 Ng7 23. Nd2 Bg5 24. Rac1 Bxf4+ 25. Rxf4 Qg5 26. Rf2 Nh5 27. Qf3 Rbg8 28.
Rxc5 Qh4 29. Nf1 f4 30. Rfc2 Rg3 31. Nxg3 Rxg3 32. Qf1 f3 33. Bxd5 Bxd5 34. Rxd5
fxg2 0-1

[Event "1st Prague Challengers"]
[Site "Prague CZE"]
[Date "2019.03.06"]
[Round "1.4"]
[White "Shirov, Alexei"]
[Black "Anton Guijarro, David"]
[Result "0-1"]
[WhiteTitle "GM"]
[BlackTitle "GM"]
[WhiteElo "2667"]
[BlackElo "2643"]
[ECO "C77"]
[Opening "Ruy Lopez"]
[Variation "Anderssen variation"]
[WhiteFideId "2209390"]
[BlackFideId "2285525"]
[EventDate "2019.03.06"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. d3 Bc5 6. c3 d6 7. O-O Ba7 8. Bg5 h6
9. Bh4 g5 10. Bg3 h5 11. h4 Nh7 12. Nbd2 g4 13. Ne1 Nf8 14. d4 exd4 15. Bxc6+
bxc6 16. cxd4 Ng6 17. Qa4 Bd7 18. e5 d5 19. f3 c5 20. Qa3 c4 21. Nc2 Bf5 22. Nb4
Bxd4+ 23. Kh2 Qd7 24. Nxa6 Ra7 25. Rad1 Qc8 26. Qa4+ Bd7 27. Qa5 Be6 28. Nxc4
Qxa6 29. Rxd4 Qxa5 30. Nxa5 Rxa5 0-1

[Event "1st Prague Challengers"]
[Site "Prague CZE"]
[Date "2019.03.06"]
[Round "1.5"]
[White "Krejci, Jan2"]
[Black "Michalik, Peter"]
[Result "0-1"]
[WhiteTitle "GM"]
[BlackTitle "GM"]
[WhiteElo "2570"]
[BlackElo "2565"]
[ECO "D31"]
[Opening "QGD"]
[Variation "Charousek (Petrosian) variation"]
[WhiteFideId "322156"]
[BlackFideId "14907526"]
[EventDate "2019.03.06"]

1. c4 e6 2. Nc3 d5 3. d4 Be7 4. Bf4 Nf6 5. e3 O-O 6. Rc1 b6 7. cxd5 Nxd5 8. Nxd5
Qxd5 9. a3 Qa5+ 10. Qd2 Qxd2+ 11. Kxd2 c5 12. Be2 Nc6 13. Bf3 Bd7 14. Ne2 Rac8
15. dxc5 Na5 16. Ke1 Nb3 17. Rd1 Nxc5 18. Nc3 Rfd8 19. Bd6 Kf8 20. h4 Bxd6 21.
Rxd6 Ke7 22. Rd2 Na4 23. Nd1 Rc1 24. h5 Nc5 25. Rh4 e5 26. Rb4 g5 27. hxg6 hxg6
28. Rd5 Rc2 29. Be4 Rc1 30. Bf3 Bf5 31. Rxd8 Kxd8 32. Be2 Be6 33. Kd2 Ra1 34.
Nc3 Nb3+ 35. Kc2 Rc1+ 36. Kd3 Rg1 37. g3 Rg2 38. Nd1 Nc5+ 39. Kd2 g5 40. Bf3 Rh2
41. a4 Kc7 42. a5 Nb3+ 43. Ke1 Nxa5 44. Nc3 Nb7 45. Bxb7 Kxb7 46. Ne4 Bd5 47.
Nxg5 f6 48. Ne4 a5 49. Nxf6 axb4 50. Nxd5 b3 51. Nf6 Rh8 52. g4 Rc8 53. Ne4 Rc2
54. g5 Rxb2 55. Nd2 Kc6 56. g6 Ra2 57. Nxb3 Kd5 58. g7 Ra8 0-1

[Event "1st Prague Challengers"]
[Site "Prague CZE"]
[Date "2019.03.07"]
[Round "2.1"]
[White "Anton Guijarro, David"]
[Black "Krejci, Jan2"]
[Result "1/2-1/2"]
[WhiteTitle "GM"]
[BlackTitle "GM"]
[WhiteElo "2643"]
[BlackElo "2570"]
[ECO "D35"]
[Opening "QGD"]
[Variation "exchange variation"]
[WhiteFideId "2285525"]
[BlackFideId "322156"]
[EventDate "2019.03.06"]

1. c4 e6 2. Nc3 d5 3. d4 Nf6 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 c5 7. Nf3 cxd4 8.
cxd4 Bb4+ 9. Bd2 Bxd2+ 10. Qxd2 O-O 11. Bc4 b6 12. O-O Bb7 13. Rfe1 Nd7 14. Rad1
Rc8 15. Bb3 Qe7 16. d5 Nc5 17. d6 Qd8 18. e5 Bxf3 19. gxf3 Qd7 20. f4 f6 21. f5
Nxb3 22. axb3 fxe5 23. Rxe5 Rxf5 24. Rxf5 exf5 25. Re1 f4 26. Qxf4 Rf8 27. Qg3
Re8 28. Rc1 g6 29. Qf4 Qe6 30. Qd4 Qf5 31. h4 Re4 32. Rc8+ Qxc8 33. Qxe4 Qd7 34.
Qf4 a5 35. Qc4+ Kf8 36. Qd4 Kf7 37. Qxb6 Qg4+ 38. Kf1 Qd1+ 1/2-1/2

[Event "1st Prague Challengers"]
[Site "Prague CZE"]
[Date "2019.03.07"]
[Round "2.2"]
[White "Ju, Wenjun"]
[Black "Michalik, Peter"]
[Result "1-0"]
[WhiteTitle "GM"]
[BlackTitle "GM"]
[WhiteElo "2580"]
[BlackElo "2565"]
[ECO "B31"]
[Opening "Sicilian"]
[Variation "Nimzovich-Rossolimo attack (with ...g6, without ...d6)"]
[WhiteFideId "8603006"]
[BlackFideId "14907526"]
[EventDate "2019.03.06"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. Bxc6 dxc6 5. d3 Bg7 6. h3 Nf6 7. Nc3 Nd7 8. Be3
e5 9. Qd2 h6 10. O-O Qe7 11. Nh2 Nf8 12. f4 exf4 13. Bxf4 g5 14. Bg3 Ng6 15. e5
Be6 16. Rae1 O-O-O 17. Nf3 Kb8 18. Ne4 Ka8 19. Qc3 Rd5 20. a3 g4 21. hxg4 Bxg4
22. Nf6 Bxf6 23. exf6 Qd7 24. Nh4 Nxh4 25. Re7 Qc8 26. Bxh4 Be6 27. Re1 Rf5 28.
R1xe6 fxe6 29. f7 e5 30. Qxc5 b6 31. Qd6 1-0

[Event "1st Prague Challengers"]
[Site "Prague CZE"]
[Date "2019.03.07"]
[Round "2.3"]
[White "Bartel, Mateusz"]
[Black "Shirov, Alexei"]
[Result "0-1"]
[WhiteTitle "GM"]
[BlackTitle "GM"]
[WhiteElo "2600"]
[BlackElo "2667"]
[ECO "C77"]
[Opening "Ruy Lopez"]
[Variation "four knights (Tarrasch) variation"]
[WhiteFideId "1112635"]
[BlackFideId "2209390"]
[EventDate "2019.03.06"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. Nc3 Be7 6. d3 d6 7. a3 O-O 8. h3 Nd4
9. Nxd4 exd4 10. Ne2 d5 11. exd5 Nxd5 12. O-O c5 13. Bb3 Be6 14. Re1 Bd6 15. Ng3
Bxg3 16. fxg3 b5 17. Qf3 Rc8 18. Kh2 c4 19. Ba2 h6 20. dxc4 bxc4 21. Rd1 Qb6 22.
Qf2 Ne3 23. Re1 c3 24. b4 Bxa2 25. Rxa2 Rfe8 26. Bxe3 dxe3 27. Qf3 Rc6 28. Raa1
Rf6 29. Qg4 Rf2 30. Re2 Qb5 31. Rae1 h5 0-1

[Event "1st Prague Challengers"]
[Site "Prague CZE"]
[Date "2019.03.07"]
[Round "2.4"]
[White "Nguyen, Thai Dai Van"]
[Black "Paravyan, David"]
[Result "1-0"]
[WhiteTitle "GM"]
[BlackTitle "GM"]
[WhiteElo "2546"]
[BlackElo "2627"]
[ECO "C65"]
[Opening "Ruy Lopez"]
[Variation "Berlin defence"]
[WhiteFideId "358878"]
[BlackFideId "4194985"]
[EventDate "2019.03.06"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. d3 Bc5 5. O-O d6 6. c3 O-O 7. h3 a6 8. Bxc6
bxc6 9. d4 Bb6 10. Re1 exd4 11. cxd4 d5 12. e5 Ne4 13. Nc3 c5 14. Be3 Nxc3 15.
bxc3 c4 16. Qc2 Qd7 17. g4 Qe7 18. Ng5 g6 19. Nf3 f5 20. exf6 Qxf6 21. Ne5 Be6
22. Qd2 Rfe8 23. Re2 c6 24. Bg5 Qf8 25. Nxc6 Rac8 26. Ne5 Ba5 27. Rae1 Qa3 28.
Re3 Rb8 29. Nc6 Rb2 30. Qc1 Qxa2 31. Rf3 Bxc3 32. Qf4 Qa3 33. Rxe6 1-0

[Event "1st Prague Challengers"]
[Site "Prague CZE"]
[Date "2019.03.07"]
[Round "2.5"]
[White "Stocek, Jiri"]
[Black "Praggnanandhaa, R"]
[Result "1/2-1/2"]
[WhiteTitle "GM"]
[BlackTitle "GM"]
[WhiteElo "2592"]
[BlackElo "2532"]
[ECO "A21"]
[Opening "English, Kramnik-Shirov counterattack"]
[WhiteFideId "304760"]
[BlackFideId "25059530"]
[EventDate "2019.03.06"]

1. c4 e5 2. Nc3 Bb4 3. Nd5 Bc5 4. Nf3 c6 5. Nc3 d6 6. e3 Bb4 7. d4 e4 8. Nd2
Bxc3 9. bxc3 Nf6 10. Ba3 O-O 11. c5 d5 12. Be2 Re8 13. O-O b6 14. c4 Ba6 15.
cxb6 axb6 16. Qb3 Nbd7 17. Rfc1 dxc4 18. Nxc4 Re6 19. f4 c5 20. dxc5 Nxc5 21.
Bxc5 bxc5 22. a4 Rb8 23. Rd1 Qc7 24. Qc2 h5 25. a5 Rb4 26. h3 h4 27. Nb6 c4 28.
Qc3 Rb3 29. Qd4 Rc6 30. Rac1 Ra3 31. Qd8+ Qxd8 32. Rxd8+ Kh7 33. Nd7 Nxd7 34.
Rxd7 Rxe3 35. Kf2 Ra3 36. Rxf7 e3+ 37. Kf3 Rg6 38. g4 hxg3 39. f5 Rc6 40. Kxg3
Rxa5 41. Kf4 Rf6 42. Rxf6 gxf6 43. Rc3 Re5 44. Rxe3 Rxe3 45. Kxe3 Kh6 46. h4 Bc8
47. Bg4 Bxf5 48. Bxf5 Kh5 49. Kd4 Kxh4 50. Kxc4 Kg5 51. Bc2 f5 52. Bxf5 Kxf5 1/2-1/2

[Event "1st Prague Challengers"]
[Site "Prague CZE"]
[Date "2019.03.08"]
[Round "3.1"]
[White "Paravyan, David"]
[Black "Ju, Wenjun"]
[Result "0-1"]
[WhiteTitle "GM"]
[BlackTitle "GM"]
[WhiteElo "2627"]
[BlackElo "2580"]
[ECO "C42"]
[Opening "Petrov"]
[Variation "classical attack"]
[WhiteFideId "4194985"]
[BlackFideId "8603006"]
[EventDate "2019.03.06"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Bf5 7. O-O Be7 8. Re1
Nc6 9. c4 O-O 10. Nc3 Nxc3 11. bxc3 Bxd3 12. Qxd3 Re8 13. cxd5 Qxd5 14. Bf4 Bd6
15. Ng5 g6 16. Ne4 Re6 17. Qf3 Kg7 18. Nxd6 Qxf3 19. gxf3 cxd6 20. Rxe6 fxe6 21.
Bxd6 Rd8 22. Bg3 Rc8 23. c4 Rd8 24. Rb1 Rd7 25. Be5+ Nxe5 26. dxe5 g5 27. Kf1
Kg6 28. Ke2 Kf5 29. Rb5 b6 30. a4 Rc7 31. a5 Rc5 32. Rb1 Rxe5+ 33. Kf1 Rxa5 34.
Rd1 Ra4 35. Rd7 a5 36. Rc7 Ke5 37. c5 b5 38. Rxh7 Rc4 39. f4+ Kxf4 40. h4 a4 41.
c6 Rxc6 42. h5 Kg4 43. Kg2 Ra6 44. f3+ Kh4 0-1

[Event "1st Prague Challengers"]
[Site "Prague CZE"]
[Date "2019.03.08"]
[Round "3.2"]
[White "Praggnanandhaa, R"]
[Black "Nguyen, Thai Dai Van"]
[Result "1/2-1/2"]
[WhiteTitle "GM"]
[BlackTitle "GM"]
[WhiteElo "2532"]
[BlackElo "2546"]
[ECO "C42"]
[Opening "Petrov"]
[Variation "classical attack"]
[WhiteFideId "25059530"]
[BlackFideId "358878"]
[EventDate "2019.03.06"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Bf5 7. O-O Be7 8. Re1
O-O 9. c4 Nc6 10. cxd5 Qxd5 11. Nc3 Nxc3 12. bxc3 Bxd3 13. Qxd3 Rfe8 14. Bf4 Bd6
15. c4 Qh5 16. Bg3 b6 17. Bxd6 cxd6 18. Qa3 Qg6 19. Rxe8+ Rxe8 20. Qa4 Rc8 21.
d5 Na5 22. Qd7 Rf8 23. Qc7 Qf6 24. Re1 Qd8 25. Qxa7 Nxc4 26. Qa4 Ne5 27. Nxe5
dxe5 28. Rxe5 f6 29. Re6 Qxd5 30. Rxb6 Ra8 31. Ra6 Rd8 32. h4 Qd1+ 33. Kh2 Qxa4
34. Rxa4 h5 35. Ra5 Kf7 36. g3 Rd3 37. Kg2 Kg6 38. a4 Ra3 39. Ra8 Kf5 40. a5 Ra2
41. a6 Kg4 42. Ra7 Kf5 43. Kf1 Kg4 44. Kg2 Kf5 45. Kf3 g5 46. hxg5 fxg5 47. Ra8
Kg6 48. Ke4 Kg7 49. Kf3 Ra3+ 50. Kg2 Ra2 51. Kg1 Ra1+ 52. Kg2 Ra2 53. a7 g4 54.
Kf1 Ra1+ 55. Ke2 Ra3 56. Kd2 Ra2+ 57. Ke3 Kh7 58. Kf4 Rxf2+ 59. Kg5 Ra2 60. Kxh5
Ra4 1/2-1/2

[Event "1st Prague Challengers"]
[Site "Prague CZE"]
[Date "2019.03.08"]
[Round "3.3"]
[White "Michalik, Peter"]
[Black "Anton Guijarro, David"]
[Result "1-0"]
[WhiteTitle "GM"]
[BlackTitle "GM"]
[WhiteElo "2565"]
[BlackElo "2643"]
[ECO "D37"]
[Opening "QGD"]
[Variation "4.Nf3"]
[WhiteFideId "14907526"]
[BlackFideId "2285525"]
[EventDate "2019.03.06"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 dxc4 5. e4 b5 6. e5 Nd5 7. Nxb5 Nb6 8. Be2
Be7 9. O-O O-O 10. Qd2 Nc6 11. Qf4 Rb8 12. Nc3 Kh8 13. Rd1 Nb4 14. Qg4 N4d5 15.
Qh5 Bb7 16. Ng5 Bxg5 17. Bxg5 f6 18. Bd2 Nb4 19. Qh4 f5 20. Bg5 Qd7 21. Be7 a5
22. Bxf8 Rxf8 23. d5 exd5 24. Bxc4 Qe6 25. Bb3 c5 26. a3 Na6 27. Ne2 c4 28. Nf4
Qe8 29. Bc2 Nc5 30. Rd4 Kg8 31. Re1 Ne4 32. f3 Qxe5 33. Ne2 Nd6 34. Nc3 Qf6 35.
Qxf6 Rxf6 36. b3 Kf7 37. Kf2 g6 38. h4 Bc6 39. Rc1 Ke6 40. a4 Rf8 41. Re1+ Kd7
42. Red1 Rb8 43. Kg3 Re8 44. bxc4 Ndxc4 45. Bb3 Ne3 46. Rc1 Kd6 47. Rd3 Nd7 48.
Kf2 Nc5 49. Rxe3 Rxe3 50. Kxe3 d4+ 51. Ke2 Nxb3 52. Rb1 dxc3 53. Rxb3 c2 54. Kd2
Bxa4 55. Ra3 Bb5 56. Rxa5 Bf1 57. g3 Be2 58. Ra3 Kd5 59. Kxc2 Kd4 60. Kd2 Bc4
61. Ra7 Bd5 62. Ke2 f4 63. gxf4 Bc4+ 64. Kf2 h5 65. Rd7+ Kc5 66. f5 gxf5 67. Ke3 1-0

[Event "1st Prague Challengers"]
[Site "Prague CZE"]
[Date "2019.03.08"]
[Round "3.4"]
[White "Shirov, Alexei"]
[Black "Stocek, Jiri"]
[Result "0-1"]
[WhiteTitle "GM"]
[BlackTitle "GM"]
[WhiteElo "2667"]
[BlackElo "2592"]
[ECO "C02"]
[Opening "French"]
[Variation "advance, Euwe variation"]
[WhiteFideId "2209390"]
[BlackFideId "304760"]
[EventDate "2019.03.06"]

1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Bd7 6. Be2 f6 7. O-O fxe5 8. dxe5
Nh6 9. c4 d4 10. b4 cxb4 11. Bd3 Nf7 12. Re1 Be7 13. Nbd2 Qc7 14. Nb3 O-O-O 15.
a3 Kb8 16. axb4 Nxb4 17. Nfxd4 Nxe5 18. Bf1 Rhf8 19. Be3 a6 20. Qh5 g6 21. Qe2
Ned3 22. Red1 e5 23. Nc2 e4 24. c5 Nd5 25. Bd4 Bf6 26. Qxe4 Bf5 27. Qf3 Ne5 28.
Bxe5 Bxe5 29. Ncd4 Bc2 30. Qh3 Bxd1 31. Rxd1 Bxd4 32. Nxd4 Qf4 33. Nf3 g5 34.
Rd4 Qc1 35. Qxh7 Ne3 36. Rxd8+ Rxd8 37. fxe3 Qxe3+ 38. Kh1 Rd1 39. Qh8+ Ka7 40.
Nd2 Qxd2 0-1

[Event "1st Prague Challengers"]
[Site "Prague CZE"]
[Date "2019.03.08"]
[Round "3.5"]
[White "Krejci, Jan2"]
[Black "Bartel, Mateusz"]
[Result "1-0"]
[WhiteTitle "GM"]
[BlackTitle "GM"]
[WhiteElo "2570"]
[BlackElo "2600"]
[ECO "E00"]
[Opening "Catalan opening"]
[WhiteFideId "322156"]
[BlackFideId "1112635"]
[EventDate "2019.03.06"]

1. d4 Nf6 2. c4 e6 3. g3 Bb4+ 4. Bd2 a5 5. Bg2 O-O 6. Nf3 b6 7. O-O Bb7 8. Nc3
Bxc3 9. Bxc3 Be4 10. e3 d6 11. Qe2 Nbd7 12. Rfd1 Qb8 13. Bf1 Qb7 14. Ne1 d5 15.
f3 Bg6 16. Rac1 c6 17. g4 Ne8 18. Ng2 Nd6 19. cxd5 exd5 20. Be1 Rfd8 21. Bg3 Nf8
22. Nf4 h6 23. e4 dxe4 24. Nxg6 Nxg6 25. fxe4 Ne8 26. Bg2 Nf6 27. d5 cxd5 28.
Rc7 Qa6 29. Qxa6 Rxa6 30. exd5 Nxg4 31. d6 N4e5 32. d7 Kf8 33. Be4 b5 34. Rd5 1-0

[Event "1st Prague Challengers"]
[Site "Prague CZE"]
[Date "2019.03.09"]
[Round "4.1"]
[White "Ju, Wenjun"]
[Black "Anton Guijarro, David"]
[Result "1/2-1/2"]
[WhiteTitle "GM"]
[BlackTitle "GM"]
[WhiteElo "2580"]
[BlackElo "2643"]
[ECO "C72"]
[Opening "Ruy Lopez"]
[Variation "modern Steinitz defence, 5.O-O"]
[WhiteFideId "8603006"]
[BlackFideId "2285525"]
[EventDate "2019.03.06"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. O-O Bd7 6. d4 exd4 7. Nxd4 b5 8. Nxc6
Bxc6 9. Bb3 Nf6 10. Nc3 Be7 11. Re1 O-O 12. Nd5 Nxd5 13. Bxd5 Qd7 14. c3 Bf6 15.
Bf4 Rfe8 16. Qd2 Rab8 17. a3 a5 18. Rad1 Bxd5 19. exd5 Qf5 20. h3 h5 21. Re3
Rxe3 22. Bxe3 g6 23. Qd3 Qxd3 24. Rxd3 Kg7 25. f4 h4 26. Kf2 Kf8 27. Kf3 Ke7 28.
Kg4 Rh8 29. f5 g5 30. Rd1 Rg8 31. Rf1 b4 32. axb4 axb4 33. cxb4 Bxb2 34. b5 f6
35. Rb1 Be5 36. b6 cxb6 37. Rxb6 Rc8 1/2-1/2

[Event "1st Prague Challengers"]
[Site "Prague CZE"]
[Date "2019.03.09"]
[Round "4.2"]
[White "Bartel, Mateusz"]
[Black "Michalik, Peter"]
[Result "1/2-1/2"]
[WhiteTitle "GM"]
[BlackTitle "GM"]
[WhiteElo "2600"]
[BlackElo "2565"]
[ECO "C67"]
[Opening "Ruy Lopez"]
[Variation "Berlin defence, open variation"]
[WhiteFideId "1112635"]
[BlackFideId "14907526"]
[EventDate "2019.03.06"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Nxe4 5. Re1 Nd6 6. Nxe5 Nxe5 7. Rxe5+ Be7
8. Bf1 O-O 9. d4 Bf6 10. Re1 Re8 11. Rxe8+ Nxe8 12. d5 d6 13. Nd2 Be7 14. Nc4
Nf6 15. Bf4 Bf5 16. Ne3 Bg6 17. Be2 Nd7 18. c3 Nc5 19. g3 a5 20. h4 h6 21. Ng4
Qd7 22. Be3 Ne4 23. a4 Nf6 24. Bd4 Nxg4 25. Bxg4 Bf5 26. Bxf5 Qxf5 27. Qe2 Qd7
28. Re1 Bf8 29. b3 c5 30. Be3 Qf5 31. c4 Re8 32. Kg2 h5 33. Qf3 Qxf3+ 34. Kxf3
b6 35. g4 hxg4+ 36. Kxg4 Re4+ 37. f4 g6 38. h5 Bg7 39. hxg6 fxg6 40. Bf2 Rxe1
41. Bxe1 Bf6 42. f5 gxf5+ 43. Kxf5 Kf7 44. Bg3 Be7 45. Bf4 Bf8 46. Bg5 Bg7 47.
Bd8 Bc3 48. Bxb6 Ke7 49. Ke4 1/2-1/2

[Event "1st Prague Challengers"]
[Site "Prague CZE"]
[Date "2019.03.09"]
[Round "4.3"]
[White "Nguyen, Thai Dai Van"]
[Black "Shirov, Alexei"]
[Result "1/2-1/2"]
[WhiteTitle "GM"]
[BlackTitle "GM"]
[WhiteElo "2546"]
[BlackElo "2667"]
[ECO "C78"]
[Opening "Ruy Lopez"]
[Variation "5.O-O"]
[WhiteFideId "358878"]
[BlackFideId "2209390"]
[EventDate "2019.03.06"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 Bc5 7. a4 Rb8 8. c3 d6
9. d4 Bb6 10. a5 Ba7 11. h3 O-O 12. Be3 Ra8 13. Nbd2 h6 14. Qe2 exd4 15. cxd4
Re8 16. Rfd1 Qe7 17. d5 Nb4 18. Bxa7 Rxa7 19. Nd4 Bd7 20. Qe3 c5 21. dxc6 Nxc6
22. Rdc1 Ne5 23. Nf1 Rb7 24. Ng3 Nc4 25. Bxc4 bxc4 26. Ndf5 Bxf5 27. Nxf5 Qe5
28. Rxc4 Rxb2 29. Qg3 Qxg3 30. Nxg3 Re5 31. Rd4 Rbb5 32. Rxd6 Rxa5 33. Rxa5 Rxa5
34. f3 Nh5 35. Nxh5 Rxh5 36. Rxa6 Rb5 37. h4 g6 38. g4 Rb2 39. Ra5 Kg7 40. Rd5
Kf6 41. h5 g5 42. Rd6+ Kg7 43. Kf1 Ra2 44. Ke1 Rb2 45. Rd2 Rxd2 46. Kxd2 Kf6 47.
Kd3 Ke5 48. Ke3 f6 49. Ke2 Kf4 50. Kf2 Ke5 51. Ke3 Ke6 52. f4 gxf4+ 53. Kxf4 Ke7
54. e5 Ke6 55. exf6 Kxf6 56. g5+ hxg5+ 57. Kg4 Kg7 58. Kxg5 1/2-1/2

[Event "1st Prague Challengers"]
[Site "Prague CZE"]
[Date "2019.03.09"]
[Round "4.4"]
[White "Stocek, Jiri"]
[Black "Krejci, Jan2"]
[Result "1/2-1/2"]
[WhiteTitle "GM"]
[BlackTitle "GM"]
[WhiteElo "2592"]
[BlackElo "2570"]
[ECO "E12"]
[Opening "Queen's Indian defence"]
[WhiteFideId "304760"]
[BlackFideId "322156"]
[EventDate "2019.03.06"]

1. d4 Nf6 2. Nf3 e6 3. c4 b6 4. Bg5 Bb7 5. Nc3 Bb4 6. e3 h6 7. Bh4 g5 8. Bg3 Ne4
9. Nd2 Bxc3 10. bxc3 Nxg3 11. hxg3 d6 12. Rh2 Nd7 13. Be2 c5 14. Bf3 Qc7 15. a4
a5 16. Rb1 O-O-O 17. Bxb7+ Qxb7 18. Qf3 f5 19. Ke2 Nf6 20. Qxb7+ Kxb7 21. f3 Kc6
22. e4 fxe4 23. Nxe4 Nxe4 24. fxe4 Rdf8 25. Rhh1 Rf6 26. Rhf1 Rhf8 27. Rxf6 Rxf6
28. Ke3 e5 29. d5+ Kc7 30. g4 Rf4 31. g3 Rf6 1/2-1/2

[Event "1st Prague Challengers"]
[Site "Prague CZE"]
[Date "2019.03.09"]
[Round "4.5"]
[White "Paravyan, David"]
[Black "Praggnanandhaa, R"]
[Result "1/2-1/2"]
[WhiteTitle "GM"]
[BlackTitle "GM"]
[WhiteElo "2627"]
[BlackElo "2532"]
[ECO "A21"]
[Opening "English, Kramnik-Shirov counterattack"]
[WhiteFideId "4194985"]
[BlackFideId "25059530"]
[EventDate "2019.03.06"]

1. c4 e5 2. Nc3 Bb4 3. Nd5 Bc5 4. b4 Bf8 5. Bb2 c6 6. Ne3 d6 7. g3 Nf6 8. Bg2
Ng4 9. Nxg4 Bxg4 10. d4 Nd7 11. h3 Bh5 12. Nf3 a5 13. b5 cxb5 14. dxe5 dxe5 15.
O-O bxc4 16. Qd5 f6 17. Qxc4 Bf7 18. Qe4 Nc5 19. Qe3 Be7 20. Rfd1 Qc8 21. Rac1
Ra6 22. g4 b6 23. g5 Qe6 24. Kh1 Ra7 25. gxf6 gxf6 26. Nh4 Rd7 27. f4 Rxd1+ 28.
Rxd1 e4 29. f5 Qxa2 30. Qf4 Bb3 31. Qb8+ Kf7 32. Qxh8 Bxd1 33. Qxh7+ Ke8 34. Ng6
Qf7 35. Qh8+ Kd7 36. Qb8 Bd8 37. Qa7+ Ke8 38. Qa8 Qb7 39. Qxb7 Nxb7 40. Bxe4 Nd6
41. Bc6+ Kf7 42. Bd5+ Ke8 43. Bc6+ Kf7 44. Bd5+ Ke8 45. Bc6+ 1/2-1/2

[Event "1st Prague Challengers"]
[Site "Prague CZE"]
[Date "2019.03.10"]
[Round "5.1"]
[White "Praggnanandhaa, R"]
[Black "Ju, Wenjun"]
[Result "1-0"]
[WhiteTitle "GM"]
[BlackTitle "GM"]
[WhiteElo "2532"]
[BlackElo "2580"]
[ECO "C42"]
[Opening "Petrov"]
[Variation "Nimzovich attack"]
[WhiteFideId "25059530"]
[BlackFideId "8603006"]
[EventDate "2019.03.06"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. Nc3 Nxc3 6. dxc3 Be7 7. Be3 O-O 8.
Qd2 Nd7 9. O-O-O c6 10. Kb1 Re8 11. Bd3 d5 12. h4 Bc5 13. Bf4 Nf6 14. Rde1 Ne4
15. Bxe4 dxe4 16. Rxe4 Be6 17. Qxd8 Raxd8 18. Be3 Bf8 19. b3 c5 20. Bf4 f6 21.
Rhe1 Kf7 22. c4 Bd7 23. Rxe8 Bxe8 24. Kc1 Bc6 25. Re3 h5 26. Ne1 Kg6 27. Bc7 Rc8
28. Bg3 Kf5 29. f3 g6 30. Kd1 b6 31. Nd3 Rd8 32. Ke2 g5 33. Kf2 Be8 34. hxg5
fxg5 35. Re5+ Kf6 36. Rd5 Be7 37. f4 Ke6 38. Re5+ Kd7 39. fxg5 Bg6 40. Rd5+ Kc8
41. Rxd8+ Bxd8 42. Bf4 h4 43. Kf3 Bf5 44. g3 hxg3 45. Kxg3 Kd7 46. Kh4 Ke8 47.
Kh5 Kf8 48. Kh6 Kg8 49. Bd6 Kf7 50. Nf4 Bxc2 51. g6+ Kg8 52. Nd5 Be4 53. Bf4
Bxd5 54. cxd5 Bf6 55. d6 Kf8 56. d7 Ke7 57. Bg5 1-0

[Event "1st Prague Challengers"]
[Site "Prague CZE"]
[Date "2019.03.10"]
[Round "5.2"]
[White "Michalik, Peter"]
[Black "Stocek, Jiri"]
[Result "1/2-1/2"]
[WhiteTitle "GM"]
[BlackTitle "GM"]
[WhiteElo "2565"]
[BlackElo "2592"]
[ECO "E16"]
[Opening "Queen's Indian"]
[Variation "Yates variation"]
[WhiteFideId "14907526"]
[BlackFideId "304760"]
[EventDate "2019.03.06"]

1. d4 Nf6 2. Nf3 e6 3. c4 b6 4. g3 Bb7 5. Bg2 Bb4+ 6. Bd2 a5 7. O-O O-O 8. Bf4
Be7 9. Nc3 Ne4 10. Nb5 c6 11. Nc3 Nxc3 12. bxc3 d5 13. Nd2 Nd7 14. Re1 g5 15.
Be3 f5 16. f3 Qe8 17. Bf2 Qf7 18. e4 Rae8 19. e5 Rc8 20. Rb1 Rc7 21. f4 Qe8 22.
Nf1 dxc4 23. Ne3 b5 24. a4 Nb6 25. axb5 cxb5 26. d5 gxf4 27. Nxf5 Rxf5 28. Bxb6
Bc5+ 29. Bxc5 Rxc5 30. Qd4 Rxd5 31. Bxd5 Bxd5 32. Rf1 f3 33. Qg4+ Kh8 34. Rbd1
Qf7 35. Rf2 Rxe5 36. Qd4 Qf6 37. Qb6 b4 38. cxb4 axb4 39. Qxb4 Re2 40. Qb6 Kg7
41. Rdf1 Re5 42. Qc7+ Kg6 43. Qc8 h5 44. h4 Kh6 45. Kh2 Re4 46. Rxf3 Re2+ 47.
Kh3 Bxf3 48. Rxf3 Qxf3 49. Qh8+ Kg6 50. Qh7+ Kf6 51. Qf7+ Kxf7 1/2-1/2

[Event "1st Prague Challengers"]
[Site "Prague CZE"]
[Date "2019.03.10"]
[Round "5.3"]
[White "Krejci, Jan2"]
[Black "Nguyen, Thai Dai Van"]
[Result "1-0"]
[WhiteTitle "GM"]
[BlackTitle "GM"]
[WhiteElo "2570"]
[BlackElo "2546"]
[ECO "A22"]
[Opening "English"]
[Variation "Bremen, reverse dragon"]
[WhiteFideId "322156"]
[BlackFideId "358878"]
[EventDate "2019.03.06"]

1. c4 Nf6 2. Nc3 e5 3. g3 d5 4. cxd5 Nxd5 5. Bg2 Nb6 6. d3 Be7 7. Be3 O-O 8. Rc1
Re8 9. Nf3 Nc6 10. O-O Bf8 11. Ne4 Nd4 12. Nxd4 exd4 13. Bg5 f6 14. Bd2 Be6 15.
a4 Nd5 16. Nc5 Bxc5 17. Rxc5 c6 18. b4 Rc8 19. Qa1 b6 20. Rc2 c5 21. bxc5 bxc5
22. Rfc1 Qd6 23. a5 Nb4 24. Rb2 Bg4 25. h3 Bf5 26. Bf4 Qd7 27. g4 Bg6 28. a6 Re6
29. Bb7 Rce8 30. Qa5 Rxe2 31. Rxe2 Rxe2 32. Qxc5 Nxd3 33. Bd5+ Bf7 34. Qc8+ Qe8
35. Bxf7+ Kxf7 36. Qc4+ 1-0

[Event "1st Prague Challengers"]
[Site "Prague CZE"]
[Date "2019.03.10"]
[Round "5.4"]
[White "Anton Guijarro, David"]
[Black "Bartel, Mateusz"]
[Result "1-0"]
[WhiteTitle "GM"]
[BlackTitle "GM"]
[WhiteElo "2643"]
[BlackElo "2600"]
[ECO "A21"]
[Opening "English, Kramnik-Shirov counterattack"]
[WhiteFideId "2285525"]
[BlackFideId "1112635"]
[EventDate "2019.03.06"]

1. c4 e5 2. Nc3 Bb4 3. Nd5 a5 4. a3 Be7 5. d4 d6 6. Nf3 e4 7. Nd2 c6 8. Nxe7
Qxe7 9. Nb1 h6 10. Bf4 Nf6 11. e3 O-O 12. Nc3 Rd8 13. Be2 Nbd7 14. b4 Nf8 15. c5
d5 16. b5 Ng6 17. Bg3 Bf5 18. bxc6 bxc6 19. Rb1 h5 20. Bxh5 Nxh5 21. Qxh5 Bc8
22. Rb6 Ra6 23. Rb8 Bb7 24. Rxd8+ Qxd8 25. O-O Ra8 26. Rb1 Ba6 27. Rb6 Qd7 28.
h3 Nf8 29. Qg4 Ne6 30. Be5 Bc8 31. Qg3 Kh7 32. Bd6 Bb7 33. Qh4+ Kg8 34. Qe7 Bc8
35. Qxd7 Bxd7 36. a4 Nd8 37. Rb8 Rxb8 38. Bxb8 Bc8 39. Bc7 Nb7 40. Na2 Kf8 41.
Nc1 Ke7 42. Nb3 Kd7 43. Bb6 Nd8 44. Bxd8 Kxd8 45. Nxa5 Kc7 46. Nb3 Ba6 47. Nd2
Bd3 48. Nf1 Bc2 49. a5 Kb7 50. Ng3 g6 51. h4 Bd1 52. h5 gxh5 53. Nf5 Ka6 54. Nh6
f6 55. Ng8 Kxa5 56. Nxf6 Kb4 57. Nd7 Kc3 58. Ne5 Ba4 59. f4 exf3 60. gxf3 1-0

[Event "1st Prague Challengers"]
[Site "Prague CZE"]
[Date "2019.03.10"]
[Round "5.5"]
[White "Shirov, Alexei"]
[Black "Paravyan, David"]
[Result "1-0"]
[WhiteTitle "GM"]
[BlackTitle "GM"]
[WhiteElo "2667"]
[BlackElo "2627"]
[ECO "C48"]
[Opening "Four knights"]
[Variation "Rubinstein counter-gambit"]
[WhiteFideId "2209390"]
[BlackFideId "4194985"]
[EventDate "2019.03.06"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Nd4 5. Bc4 Bc5 6. d3 d6 7. Na4 b5 8. Nxd4
bxc4 9. Nf5 Bxf5 10. exf5 cxd3 11. Nxc5 dxc5 12. Qxd3 Qxd3 13. cxd3 O-O-O 14.
Ke2 Nd5 15. Rd1 Rhe8 16. g3 Rd6 17. Bd2 e4 18. dxe4 Rxe4+ 19. Kf3 Rd4 20. Be1
Nf6 21. Rxd4 cxd4 22. Rc1 Kb7 23. Bb4 Rb6 24. Bf8 Ne8 25. b3 h5 26. h3 Ra6 27.
Rc2 Ra5 28. g4 Rd5 29. Re2 hxg4+ 30. hxg4 Rd8 31. Be7 Rd7 32. Bf8 Rd8 33. Be7
Rd7 34. Bc5 Nf6 35. Rd2 d3 36. g5 Ne8 37. Ke4 Kc6 38. b4 Nd6+ 39. Bxd6 cxd6 40.
Rxd3 Re7+ 41. Kd4 Re5 42. Rf3 a5 43. a3 axb4 44. axb4 Rb5 45. Kc4 g6 46. Kb3
gxf5 47. Rc3+ Kb6 48. Kc4 Kc6 49. Ra3 d5+ 50. Kb3 Kd6 51. Ra7 Ke5 52. Rxf7 Rb6
53. Rf6 Rb7 54. Rc6 d4 55. g6 d3 56. Rc1 Kf6 57. Rg1 d2 58. Kc3 Kg7 59. Rb1 Kxg6
60. Kxd2 Kf6 61. b5 Ke5 62. b6 Kd4 63. Ke2 Kc5 64. Kf3 1-0

[Event "1st Prague Challengers"]
[Site "Prague CZE"]
[Date "2019.03.11"]
[Round "6.1"]
[White "Nguyen, Thai Dai Van"]
[Black "Michalik, Peter"]
[Result "1/2-1/2"]
[WhiteTitle "GM"]
[BlackTitle "GM"]
[WhiteElo "2546"]
[BlackElo "2565"]
[ECO "C65"]
[Opening "Ruy Lopez"]
[Variation "Berlin defence"]
[WhiteFideId "358878"]
[BlackFideId "14907526"]
[EventDate "2019.03.06"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. d3 Bc5 5. O-O d6 6. c3 O-O 7. Nbd2 a6 8. Bxc6
bxc6 9. d4 exd4 10. cxd4 Bb6 11. Qc2 Re8 12. Re1 c5 13. d5 Bg4 14. b3 Ba5 15.
Re3 Bxf3 16. Nxf3 Qe7 17. Bd2 Bxd2 18. Nxd2 Ng4 19. Ree1 Qf6 20. Nc4 a5 21. Rad1
Qh4 22. h3 Ne5 23. Re3 g6 24. Rf1 Qf4 25. Nb2 f5 26. exf5 Qxf5 27. Qxf5 gxf5 28.
Rfe1 f4 29. Re4 Rf8 30. Nc4 Nd3 31. Rd1 Nb4 32. Re7 Rf7 33. Re2 f3 1/2-1/2

[Event "1st Prague Challengers"]
[Site "Prague CZE"]
[Date "2019.03.11"]
[Round "6.2"]
[White "Ju, Wenjun"]
[Black "Bartel, Mateusz"]
[Result "1/2-1/2"]
[WhiteTitle "GM"]
[BlackTitle "GM"]
[WhiteElo "2580"]
[BlackElo "2600"]
[ECO "C78"]
[Opening "Ruy Lopez"]
[Variation "Archangelsk (counterthrust) variation"]
[WhiteFideId "8603006"]
[BlackFideId "1112635"]
[EventDate "2019.03.06"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 Bb7 7. d3 Be7 8. a4
O-O 9. Nc3 Na5 10. axb5 Nxb3 11. cxb3 axb5 12. Rxa8 Bxa8 13. Nxb5 c5 14. Nc3 d6
15. Bg5 Nh5 16. Bxe7 Qxe7 17. Nd2 Nf4 18. Nc4 d5 19. Nb6 d4 20. Ne2 Ne6 21. Nc4
Qc7 22. Qd2 Rb8 23. f4 exf4 24. Nxf4 Bc6 25. Nxe6 fxe6 26. Qg5 Be8 27. Ra1 h6
28. Qg3 Qxg3 29. hxg3 Kf8 30. Ra3 Bb5 31. Ne5 Ke7 32. Ra7+ Kd6 33. Nf7+ Kc6 34.
Ne5+ Kd6 35. Nf7+ 1/2-1/2

[Event "1st Prague Challengers"]
[Site "Prague CZE"]
[Date "2019.03.11"]
[Round "6.3"]
[White "Stocek, Jiri"]
[Black "Anton Guijarro, David"]
[Result "1/2-1/2"]
[WhiteTitle "GM"]
[BlackTitle "GM"]
[WhiteElo "2592"]
[BlackElo "2643"]
[ECO "E10"]
[Opening "Queen's pawn game"]
[WhiteFideId "304760"]
[BlackFideId "2285525"]
[EventDate "2019.03.06"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 Bb4+ 5. Nc3 dxc4 6. Bg2 O-O 7. O-O Nc6 8. Qa4
Nd5 9. Qc2 Be7 10. Rd1 f5 11. b3 Ncb4 12. Qb2 cxb3 13. Qxb3 Nxc3 14. Qxc3 Nd5
15. Qb3 b6 16. Bb2 Bb7 17. Rac1 Bd6 18. Nd2 a5 19. a4 f4 20. Nc4 Qf6 21. Rf1 Qg5
22. Nxd6 cxd6 23. Ba3 Rad8 24. e4 fxe3 25. fxe3 Rxf1+ 26. Rxf1 h5 27. Rf2 Rc8
28. e4 Qe3 29. Qxe3 Nxe3 30. Bh3 Ng4 31. d5 exd5 32. exd5 Bxd5 33. Rd2 Rc3 34.
Bxg4 hxg4 35. Bxd6 Bf3 36. Be5 Ra3 37. Rd4 Ra1+ 38. Kf2 Ra2+ 39. Ke3 Rxh2 40.
Bc7 Rb2 41. Kf4 Kf7 42. Kf5 g6+ 43. Kg5 Bc6 44. Rxg4 b5 45. Rf4+ Ke7 46. Bxa5
bxa4 47. Bb4+ Ke6 48. Kxg6 Rb3 49. g4 Ke5 50. Rf5+ Kd4 51. Bc5+ Kc4 52. Re5 a3
53. Bxa3 Rxa3 54. g5 Kd4 55. Kf6 Be4 56. Rxe4+ Kxe4 57. g6 Ra6+ 58. Kf7 Kf5 59.
g7 Ra7+ 60. Kg8 Kg6 61. Kh8 Rxg7 1/2-1/2

[Event "1st Prague Challengers"]
[Site "Prague CZE"]
[Date "2019.03.11"]
[Round "6.4"]
[White "Paravyan, David"]
[Black "Krejci, Jan2"]
[Result "1/2-1/2"]
[WhiteTitle "GM"]
[BlackTitle "GM"]
[WhiteElo "2627"]
[BlackElo "2570"]
[ECO "C50"]
[Opening "Giuoco Piano"]
[WhiteFideId "4194985"]
[BlackFideId "322156"]
[EventDate "2019.03.06"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. O-O Nf6 5. d3 d6 6. c3 a6 7. a4 Ba7 8. Re1 h6
9. Nbd2 Be6 10. Bxe6 fxe6 11. Nf1 O-O 12. Ng3 Qd7 13. h3 Rf7 14. b4 Raf8 15. b5
Ne7 16. bxa6 bxa6 17. d4 exd4 18. cxd4 Ng6 19. Be3 Nh7 20. Qe2 Rxf3 21. gxf3 Ng5
22. Bxg5 hxg5 23. Red1 Nf4 24. Qf1 e5 25. dxe5 Nxh3+ 26. Kh2 g4 27. Qc4+ Kh7 28.
exd6 Nxf2 29. Rd5 gxf3 30. Rh5+ Kg6 31. Rf1 Ng4+ 32. Kh1 Ne3 33. Qxa6 Qxd6 34.
Qxd6+ cxd6 35. Rf2 Ng4 36. Rd2 Nf2+ 37. Kh2 Ng4+ 38. Kh3 Nf2+ 39. Rxf2 Bxf2 40.
Rf5 Ra8 41. Rxf3 Bc5 42. Nf5 Rxa4 43. Rg3+ Kf6 44. Nxg7 Rxe4 45. Nh5+ Kf5 46.
Rd3 Re1 47. Rd5+ Ke4 48. Nf6+ Kf4 49. Nh5+ Kf3 50. Rf5+ Ke3 51. Rd5 Rf1 52. Ng3
Rf6 53. Kg4 Rf4+ 54. Kg5 Rf8 55. Kg4 Rg8+ 56. Rg5 Rxg5+ 57. Kxg5 d5 58. Kf6 d4
59. Nf5+ Ke4 60. Nxd4 Bxd4+ 1/2-1/2

[Event "1st Prague Challengers"]
[Site "Prague CZE"]
[Date "2019.03.11"]
[Round "6.5"]
[White "Praggnanandhaa, R"]
[Black "Shirov, Alexei"]
[Result "1-0"]
[WhiteTitle "GM"]
[BlackTitle "GM"]
[WhiteElo "2532"]
[BlackElo "2667"]
[ECO "C53"]
[Opening "Giuoco Piano"]
[WhiteFideId "25059530"]
[BlackFideId "2209390"]
[EventDate "2019.03.06"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d3 O-O 6. O-O d5 7. exd5 Nxd5 8. Re1
Bg4 9. Nbd2 Bb6 10. a4 a6 11. Ne4 f6 12. d4 Kh8 13. dxe5 Bxf3 14. gxf3 Nce7 15.
exf6 gxf6 16. a5 Ba7 17. Ng3 Rg8 18. f4 c6 19. Bd3 Qd7 20. c4 Nb4 21. Be4 Rad8
22. Qxd7 Rxd7 23. Ra4 Bc5 24. b3 Bd4 25. Re2 c5 26. Kg2 Nec6 27. Bd2 Rgd8 28.
Be1 Rg7 29. h3 Rgd7 30. Kf1 Kg7 31. Nf5+ Kf7 32. Rd2 Re8 33. Re2 Red8 34. h4 Kf8
35. h5 Rc7 36. h6 Kf7 37. Ng7 Re7 38. Nf5 Red7 39. Ng7 Re7 40. f5 Be5 41. f4
Bxf4 42. Ne6 Rxe6 43. fxe6+ Ke7 44. Bc3 Rd1+ 45. Re1 Rd8 46. Bxh7 Bxh6 47. Be4
Bd2 48. Bxb4 Bxb4 49. Re3 Rd1+ 50. Kg2 Rd2+ 51. Kh3 Nxa5 52. Bd5 Rb2 53. Ra1 Bd2
54. Rg3 Rxb3 55. Rxb3 Nxb3 56. Rb1 Nd4 57. Rxb7+ Ke8 58. Kg4 f5+ 59. Kh5 Be1 60.
e7 1-0

[Event "1st Prague Challengers"]
[Site "Prague CZE"]
[Date "2019.03.12"]
[Round "7.1"]
[White "Shirov, Alexei"]
[Black "Ju, Wenjun"]
[Result "1-0"]
[WhiteTitle "GM"]
[BlackTitle "GM"]
[WhiteElo "2667"]
[BlackElo "2580"]
[ECO "E10"]
[Opening "Queen's pawn game"]
[WhiteFideId "2209390"]
[BlackFideId "8603006"]
[EventDate "2019.03.06"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 Bb4+ 5. Bd2 Bd6 6. Nc3 c6 7. Qc2 O-O 8. e4
dxe4 9. Nxe4 Nxe4 10. Qxe4 Nd7 11. Bd3 Nf6 12. Qh4 Re8 13. O-O-O b5 14. c5 Bxc5
15. g4 Bxd4 16. g5 Bxb2+ 17. Kc2 Qd5 18. gxf6 Bxf6 19. Qxh7+ Kf8 20. Bb4+ c5 21.
Qh8+ Ke7 22. Qxe8+ Kxe8 23. Bxb5+ Kd8 24. Bc6 1-0

[Event "1st Prague Challengers"]
[Site "Prague CZE"]
[Date "2019.03.12"]
[Round "7.2"]
[White "Krejci, Jan2"]
[Black "Praggnanandhaa, R"]
[Result "1-0"]
[WhiteTitle "GM"]
[BlackTitle "GM"]
[WhiteElo "2570"]
[BlackElo "2532"]
[ECO "A05"]
[Opening "Reti"]
[Variation "King's Indian attack, Spassky's variation"]
[WhiteFideId "322156"]
[BlackFideId "25059530"]
[EventDate "2019.03.06"]

1. Nf3 Nf6 2. g3 b5 3. Na3 a6 4. c4 b4 5. Nc2 a5 6. Bg2 Bb7 7. d4 g6 8. O-O Bg7
9. b3 Na6 10. Bb2 c5 11. a3 cxd4 12. axb4 Nxb4 13. Nxb4 axb4 14. Bxd4 Rb8 15.
Ba7 Rc8 16. Qe1 Nh5 17. Qxb4 Bxf3 18. Bxf3 Bxa1 19. Rxa1 O-O 20. Bb6 Qe8 21. Bb7
d6 22. Bxc8 Qxc8 23. c5 dxc5 24. Bxc5 Qe6 25. e3 Nf6 26. Qb7 Re8 27. Bd4 h5 28.
Ra8 Rxa8 29. Qxa8+ Kh7 30. Bxf6 exf6 31. Qa4 g5 32. Qc4 Qd7 33. b4 Kg7 34. h4
Qd1+ 35. Kg2 g4 36. Qc6 Qb1 37. b5 Qb3 38. Qc5 Kg6 39. Kh2 Qb1 40. b6 Qb2 41. e4
Kg7 42. Kg2 Qb1 43. Qc6 Qb3 44. b7 Qb4 45. Qc7 Qxe4+ 46. Kh2 Qf3 47. Qb6 1-0

[Event "1st Prague Challengers"]
[Site "Prague CZE"]
[Date "2019.03.12"]
[Round "7.3"]
[White "Michalik, Peter"]
[Black "Paravyan, David"]
[Result "0-1"]
[WhiteTitle "GM"]
[BlackTitle "GM"]
[WhiteElo "2565"]
[BlackElo "2627"]
[ECO "B99"]
[Opening "Sicilian"]
[Variation "Najdorf, 7...Be7 main line"]
[WhiteFideId "14907526"]
[BlackFideId "4194985"]
[EventDate "2019.03.06"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3
Qc7 9. O-O-O Nbd7 10. g4 b5 11. Bxf6 Nxf6 12. g5 Nd7 13. f5 O-O 14. Rg1 b4 15.
Nce2 e5 16. f6 exd4 17. fxe7 Re8 18. Nxd4 Ne5 19. Qf2 Be6 20. Kb1 Qc5 21. Rg2
Rxe7 22. h4 a5 23. Nxe6 fxe6 24. Qd2 Rf8 25. Be2 Rd7 26. h5 a4 27. h6 g6 28. Qd4
Rf4 29. Rgg1 Kf8 30. Rg3 Ke7 31. a3 Rb7 32. axb4 Rxb4 33. Qxc5 dxc5 34. Rc3 c4
35. Re3 Rf2 36. Ka2 Rb6 37. Rd4 Rd6 38. Rxd6 Kxd6 39. Kb1 Kc5 40. Kc1 a3 41.
bxa3 Kd4 42. Kd2 c3+ 43. Rxc3 Rxe2+ 44. Kxe2 Kxc3 45. a4 Nc4 46. e5 Kxc2 0-1

[Event "1st Prague Challengers"]
[Site "Prague CZE"]
[Date "2019.03.12"]
[Round "7.4"]
[White "Anton Guijarro, David"]
[Black "Nguyen, Thai Dai Van"]
[Result "1-0"]
[WhiteTitle "GM"]
[BlackTitle "GM"]
[WhiteElo "2643"]
[BlackElo "2546"]
[ECO "E20"]
[Opening "Nimzo-Indian"]
[Variation "Kmoch variation"]
[WhiteFideId "2285525"]
[BlackFideId "358878"]
[EventDate "2019.03.06"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. f3 c5 5. d5 O-O 6. e4 b5 7. Nh3 bxc4 8. Bxc4
exd5 9. Bxd5 Nxd5 10. Qxd5 Ba6 11. Bf4 Nc6 12. Kf2 Ba5 13. Rhd1 Nb4 14. Qd6 Re8
15. Kg1 c4 16. Bg3 Re6 17. Qxd7 Nd3 18. Qxd8+ Rxd8 19. Rab1 Ree8 20. Nf4 Nxb2
21. Rxd8 Rxd8 22. Nfd5 Nd3 23. Bc7 Bxc7 24. Nxc7 Bc8 25. Rb8 Ne5 26. N7b5 Nc6
27. Ra8 g5 28. Nd5 a6 29. Na3 c3 30. Nxc3 Be6 31. Rxd8+ Nxd8 32. Kf2 Nc6 33. Nc2
f5 34. a3 Kf7 35. Ke3 f4+ 36. Kd3 a5 37. Nd5 Bc8 38. Nc7 Ke7 39. Kc4 Kd6 40.
Nb5+ Ke5 41. Kc5 Nd8 42. Ne1 Ne6+ 43. Kb6 a4 44. Nd3+ Kf6 45. e5+ Ke7 46. Nb4
Nf8 47. Nd4 Be6 48. Kc7 1-0

[Event "1st Prague Challengers"]
[Site "Prague CZE"]
[Date "2019.03.12"]
[Round "7.5"]
[White "Bartel, Mateusz"]
[Black "Stocek, Jiri"]
[Result "0-1"]
[WhiteTitle "GM"]
[BlackTitle "GM"]
[WhiteElo "2600"]
[BlackElo "2592"]
[ECO "B52"]
[Opening "Sicilian"]
[Variation "Canal-Sokolsky attack, 3...Bd7"]
[WhiteFideId "1112635"]
[BlackFideId "304760"]
[EventDate "2019.03.06"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. c4 Nf6 5. Nc3 g6 6. O-O Bg7 7. Re1 O-O 8. h3
a6 9. Bxd7 Nfxd7 10. d4 Nc6 11. Be3 Qa5 12. a3 cxd4 13. Nxd4 Rac8 14. Nd5 Rfe8
15. b3 Qd8 16. Rb1 e6 17. Nb4 Nxd4 18. Bxd4 Ne5 19. Qd2 a5 20. Nc2 a4 21. Ne3
axb3 22. Rxb3 Bh6 23. Rxb7 Nxc4 24. Qd3 Qa5 25. Reb1 Qd2 26. Ng4 Bg7 27. Qxd2
Nxd2 28. Bxg7 Kxg7 29. Re1 h5 30. Nh2 Rc4 31. f3 Ra4 32. Nf1 Nxf1 33. Kxf1 Rxa3
34. Rc1 h4 35. Rcc7 Rf8 36. Ra7 Rxa7 37. Rxa7 Kf6 38. g3 hxg3 39. Kg2 Ke5 40.
Kxg3 f5 41. Ra5+ d5 42. exd5 exd5 43. f4+ Ke4 44. Ra6 Re8 45. Rxg6 d4 46. h4 Ke3
47. h5 d3 48. h6 d2 49. Rd6 Rg8+ 50. Kh4 Rg1 51. h7 d1=Q 52. Rxd1 Rxd1 53. Kg5
Rh1 54. Kxf5 Rxh7 55. Kg6 Rh1 56. f5 Rg1+ 57. Kf7 Kf4 58. f6 Kf5 0-1

[Event "1st Prague Challengers"]
[Site "Prague CZE"]
[Date "2019.03.13"]
[Round "8.1"]
[White "Paravyan, David"]
[Black "Anton Guijarro, David"]
[Result "0-1"]
[WhiteTitle "GM"]
[BlackTitle "GM"]
[WhiteElo "2627"]
[BlackElo "2643"]
[ECO "A45"]
[Opening "Trompovsky attack (Ruth, Opovcensky opening)"]
[WhiteFideId "4194985"]
[BlackFideId "2285525"]
[EventDate "2019.03.06"]

1. d4 Nf6 2. Bg5 c5 3. d5 d6 4. Nc3 h6 5. Bd2 b5 6. Nxb5 Nxd5 7. e4 Nb6 8. a4 a6
9. Nc3 Nc6 10. f4 e6 11. Nf3 Be7 12. Bd3 O-O 13. a5 Nd7 14. Ne2 d5 15. b3 dxe4
16. Bxe4 Bb7 17. O-O Nf6 18. Bd3 Nb4 19. Bc4 Ne4 20. Be1 Bf6 21. c3 Nc6 22. Qc2
Nxa5 23. Bd3 Nd6 24. Ne5 Qc7 25. Ng4 Be7 26. c4 Nc6 27. Bc3 f5 28. Ne5 Bf6 29.
Rae1 Rad8 30. Ng3 Nb4 31. Bxb4 cxb4 32. c5 Nb5 33. Qc4 Bxe5 34. Rxe5 Kh8 35. Be2
Nd4 36. Re3 a5 37. Rf2 Nxe2+ 38. Rexe2 Bd5 39. Qc2 Rc8 40. Qb2 Qxc5 41. Rc2 Qe3 0-1

[Event "1st Prague Challengers"]
[Site "Prague CZE"]
[Date "2019.03.13"]
[Round "8.2"]
[White "Shirov, Alexei"]
[Black "Krejci, Jan2"]
[Result "1/2-1/2"]
[WhiteTitle "GM"]
[BlackTitle "GM"]
[WhiteElo "2667"]
[BlackElo "2570"]
[ECO "C99"]
[Opening "Ruy Lopez"]
[Variation "closed, Chigorin, 12...c5d4"]
[WhiteFideId "2209390"]
[BlackFideId "322156"]
[EventDate "2019.03.06"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. c3
O-O 9. h3 Na5 10. Bc2 c5 11. d4 Qc7 12. Nbd2 cxd4 13. cxd4 Nc6 14. Nb3 a5 15.
Be3 a4 16. Nbd2 Bd7 17. Rc1 Qb7 18. Qe2 Rfe8 19. Bd3 Rab8 20. dxe5 Nxe5 21. Nxe5
dxe5 22. Nf3 Bb4 23. Red1 Bc6 24. Bc5 Bxc5 25. Rxc5 Nd7 26. Rc3 Nf8 27. Qc2 Bd7
28. b3 axb3 29. axb3 Rbc8 30. b4 f6 31. Nd2 Rxc3 32. Qxc3 Rc8 33. Qb2 Be8 34.
Bb1 Bf7 1/2-1/2

[Event "1st Prague Challengers"]
[Site "Prague CZE"]
[Date "2019.03.13"]
[Round "8.3"]
[White "Ju, Wenjun"]
[Black "Stocek, Jiri"]
[Result "1-0"]
[WhiteTitle "GM"]
[BlackTitle "GM"]
[WhiteElo "2580"]
[BlackElo "2592"]
[ECO "B52"]
[Opening "Sicilian"]
[Variation "Canal-Sokolsky attack, 3...Bd7"]
[WhiteFideId "8603006"]
[BlackFideId "304760"]
[EventDate "2019.03.06"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Nxd7 5. O-O Ngf6 6. Qe2 e6 7. c3 Rc8 8.
d4 cxd4 9. cxd4 d5 10. e5 Ne4 11. Be3 Be7 12. Ne1 f5 13. f3 Ng5 14. Nd3 O-O 15.
Nc3 Qb6 16. Rfc1 Nf7 17. Rc2 Rc6 18. Na4 Qa6 19. Rxc6 Qxc6 20. b3 Ba3 21. Bc1
Be7 22. Bd2 b5 23. Rc1 Qa6 24. Nf4 Nb8 25. Nc5 Bxc5 26. Rxc5 Nd8 27. Rxb5 Nbc6
28. Be3 g5 29. Nh5 f4 30. Bf2 Rf7 31. Nf6+ Kh8 32. a4 Ne7 33. Qc2 Ndc6 34. h4
gxh4 35. Bxh4 Nf5 36. Bf2 Rf8 37. Qd2 Qc8 38. Qxf4 Qc7 39. Qd2 1-0

[Event "1st Prague Challengers"]
[Site "Prague CZE"]
[Date "2019.03.13"]
[Round "8.4"]
[White "Praggnanandhaa, R"]
[Black "Michalik, Peter"]
[Result "0-1"]
[WhiteTitle "GM"]
[BlackTitle "GM"]
[WhiteElo "2532"]
[BlackElo "2565"]
[ECO "D78"]
[Opening "Neo-Gruenfeld, 6.O-O c6"]
[WhiteFideId "25059530"]
[BlackFideId "14907526"]
[EventDate "2019.03.06"]

1. Nf3 d5 2. g3 g6 3. Bg2 Bg7 4. d4 Nf6 5. O-O O-O 6. c4 c6 7. Qb3 Qb6 8. Nc3
Rd8 9. Rd1 Bf5 10. Ne1 Na6 11. Qxb6 axb6 12. Na4 b5 13. cxb5 cxb5 14. Nb6 Ra7
15. Bf4 Nb4 16. a3 Nc6 17. e3 e6 18. f3 Ne8 19. g4 Ra6 20. gxf5 gxf5 21. Nxd5
Rxd5 22. Bg3 Rd8 23. Bf1 Rb6 24. Nd3 Na5 25. Bf2 Nc4 26. b3 Na5 27. Rab1 Nf6 28.
Rdc1 Bh6 29. Rc5 Nc6 30. Ne5 Nd5 31. Re1 Nxe5 32. dxe5 Bf8 33. Rc2 Rc6 34. Rxc6
bxc6 35. a4 Bb4 36. Rc1 Nc3 37. axb5 cxb5 38. Ra1 Bc5 39. b4 Bxb4 40. Be1 Nd5
41. Bxb5 Bc5 42. Bh4 Rb8 43. Bc6 Nb4 44. Bd7 Nc2 45. Ra5 Bxe3+ 46. Kg2 Nd4 47.
Bf6 h6 48. Ra2 Kh7 49. h4 h5 50. Kh3 Nxf3 51. Ra3 Ng1+ 52. Kg2 Rb2+ 53. Kf1 Rb1+
54. Kg2 f4 55. Bc6 f3+ 56. Bxf3 Rb2+ 57. Kg3 Nxf3 58. Kxf3 Bh6 59. Ra7 Kg6 60.
Ra8 Kf5 61. Rh8 Rb3+ 62. Ke2 Bf4 63. Rxh5+ Ke4 64. Rh7 Rb2+ 65. Kd1 Kd3 66. Ke1
Be3 67. Kf1 Rf2+ 68. Ke1 Rf5 69. Bg5 Bd4 70. Bd2 Rxe5+ 71. Kd1 Re2 72. Bg5 Rh2 0-1

[Event "1st Prague Challengers"]
[Site "Prague CZE"]
[Date "2019.03.13"]
[Round "8.5"]
[White "Nguyen, Thai Dai Van"]
[Black "Bartel, Mateusz"]
[Result "1/2-1/2"]
[WhiteTitle "GM"]
[BlackTitle "GM"]
[WhiteElo "2546"]
[BlackElo "2600"]
[ECO "B04"]
[Opening "Alekhine's defence"]
[Variation "modern variation"]
[WhiteFideId "358878"]
[BlackFideId "1112635"]
[EventDate "2019.03.06"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 Bf5 5. Be2 e6 6. O-O Be7 7. c4 Nb6 8. Nc3
O-O 9. b3 dxe5 10. Nxe5 N8d7 11. Nf3 Bf6 12. Be3 Nc8 13. Rc1 Ne7 14. Ne1 Bg6 15.
g4 h6 16. f4 c5 17. dxc5 Qc8 18. Na4 Rd8 19. Bd3 b6 20. cxb6 Nxb6 21. Nxb6 axb6
22. Qe2 Bd4 23. Bxd4 Rxd4 24. Bxg6 Nxg6 25. Ng2 Qc5 26. Kh1 Qc6 27. Kg1 Qc5 28.
Kh1 Rad8 29. Rcd1 Rxd1 30. Rxd1 Rxd1+ 31. Qxd1 Qf2 32. h4 e5 33. Qd8+ Kh7 34.
Qd3 exf4 35. h5 f3 36. hxg6+ fxg6 37. Ne3 Qg3 38. Qf1 Qh4+ 39. Kg1 Qg3+ 1/2-1/2

[Event "1st Prague Challengers"]
[Site "Prague CZE"]
[Date "2019.03.14"]
[Round "9.1"]
[White "Anton Guijarro, David"]
[Black "Praggnanandhaa, R"]
[Result "1/2-1/2"]
[WhiteTitle "GM"]
[BlackTitle "GM"]
[WhiteElo "2643"]
[BlackElo "2532"]
[ECO "A21"]
[Opening "English, Kramnik-Shirov counterattack"]
[WhiteFideId "2285525"]
[BlackFideId "25059530"]
[EventDate "2019.03.06"]

1. c4 e5 2. Nc3 Bb4 3. Nd5 a5 4. Nf3 d6 5. a3 Bc5 6. e3 Nf6 7. d4 Nxd5 8. cxd5
exd4 9. exd4 Bb6 10. Bg5 f6 11. Be3 O-O 12. Bd3 c6 13. Qc2 f5 14. O-O h6 15.
Rfe1 Kh8 16. dxc6 bxc6 17. d5 Bxe3 18. Rxe3 c5 19. Rae1 Ra7 20. Bb5 Qf6 21. Re8
Rf7 22. Qd2 f4 23. Qxa5 Bg4 24. Qc3 Nd7 25. Bxd7 Bxd7 26. Rxf8+ Rxf8 27. Qxf6
Rxf6 28. Nd2 Rf5 29. Nc4 Ba4 30. Nb6 Bb3 31. f3 Bxd5 32. Rd1 Bb3 33. Rxd6 Re5
34. Kf2 c4 35. Nd5 Rf5 36. Rd8+ Kh7 37. Nc3 Rh5 38. h3 Re5 39. Rd5 Re8 40. h4
Rb8 41. Ke1 Bc2 42. Rd2 Bf5 43. h5 g6 44. hxg6+ Kxg6 45. Kd1 Bd3 46. Nd5 Kg5 47.
Ke1 Rb3 48. Nc3 h5 49. Kf2 Kf5 50. Na2 Bb1 51. Nc3 Bd3 52. Ne2 Rb7 53. Nc1 Bb1
54. Kg1 Ke5 55. Kf1 Bf5 56. Na2 Rb3 57. Kf2 Bb1 58. Nc1 Rb7 59. Ne2 1/2-1/2

[Event "1st Prague Challengers"]
[Site "Prague CZE"]
[Date "2019.03.14"]
[Round "9.2"]
[White "Krejci, Jan2"]
[Black "Ju, Wenjun"]
[Result "1/2-1/2"]
[WhiteTitle "GM"]
[BlackTitle "GM"]
[WhiteElo "2570"]
[BlackElo "2580"]
[ECO "D38"]
[Opening "QGD"]
[Variation "Ragozin variation"]
[WhiteFideId "322156"]
[BlackFideId "8603006"]
[EventDate "2019.03.06"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Bb4 5. Bg5 h6 6. Bxf6 Qxf6 7. e3 O-O 8. Rc1
dxc4 9. Bxc4 c5 10. O-O cxd4 11. Nxd4 Qe7 12. Qb3 Ba5 13. Rfd1 Rd8 14. Be2 Nd7
15. Ne4 Ne5 16. Rc5 Bc7 17. Qc2 Nc6 18. Nxc6 bxc6 19. Rxc6 Bb6 20. Rxd8+ Qxd8
21. Bf3 Bb7 22. Rc3 Bxe4 23. Bxe4 Rb8 24. g3 Qf6 25. b4 g6 26. a4 Kg7 27. Kg2 h5
28. h4 Bd8 29. Rc4 Qe5 30. Rd4 Bb6 31. Rc4 Bd8 32. Bf3 a6 33. Bc6 Be7 34. b5
axb5 35. axb5 Bd8 36. Re4 Qd6 37. Rd4 Qe5 38. Rd7 Bb6 39. Qd2 Kg8 40. Qd3 Qf6
41. Qe4 Kg7 42. Qb4 Qe5 43. Qa3 Bc5 44. Qd3 Bb6 45. Be4 Qf6 46. Qc2 Ba5 47. Bc6
Rd8 48. Rxd8 Qxd8 49. Qe4 Bb6 50. Qe5+ Qf6 51. Qb8 Qd8 52. Qxd8 Bxd8 53. Kf3 Kf6
54. Ke4 Bb6 55. f3 Ke7 56. Kd3 f5 57. Ke2 Bc7 58. Kf2 Bb6 59. Bb7 Bc5 60. Bc8
Bb6 61. Ke2 Bc7 62. f4 Bb6 63. Kd3 Bc5 64. Bb7 Bb6 65. Bf3 Bc5 66. Bd1 Bb6 67.
Bb3 Bc5 1/2-1/2

[Event "1st Prague Challengers"]
[Site "Prague CZE"]
[Date "2019.03.14"]
[Round "9.3"]
[White "Michalik, Peter"]
[Black "Shirov, Alexei"]
[Result "1/2-1/2"]
[WhiteTitle "GM"]
[BlackTitle "GM"]
[WhiteElo "2565"]
[BlackElo "2667"]
[ECO "C53"]
[Opening "Giuoco Piano"]
[WhiteFideId "14907526"]
[BlackFideId "2209390"]
[EventDate "2019.03.06"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d3 O-O 6. O-O d5 7. exd5 Nxd5 8. Re1
Bg4 9. h3 Bh5 10. Nbd2 Nb6 11. Bb3 Qxd3 12. Nxe5 Qf5 13. Nef3 Rad8 14. g4 Bxg4
15. hxg4 Qxg4+ 16. Kh1 Qh3+ 17. Nh2 Bd6 18. f4 Bxf4 19. Re2 Ne5 20. Qf1 Qxf1+
21. Ndxf1 Nd3 22. Bxf4 Nxf4 23. Re7 Nbd5 24. Re5 Rfe8 25. Rxe8+ Rxe8 26. Rd1 c6
27. Nf3 Kf8 28. Rd4 Re2 29. N1d2 f5 30. Bc4 Re7 31. Bxd5 1/2-1/2

[Event "1st Prague Challengers"]
[Site "Prague CZE"]
[Date "2019.03.14"]
[Round "9.4"]
[White "Stocek, Jiri"]
[Black "Nguyen, Thai Dai Van"]
[Result "1/2-1/2"]
[WhiteTitle "GM"]
[BlackTitle "GM"]
[WhiteElo "2592"]
[BlackElo "2546"]
[ECO "A28"]
[Opening "English"]
[Variation "four knights, Marini variation"]
[WhiteFideId "304760"]
[BlackFideId "358878"]
[EventDate "2019.03.06"]

1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. a3 d5 5. cxd5 Nxd5 6. Qc2 Nxc3 7. dxc3 Be7 8.
e4 Be6 9. Be3 O-O 10. Rd1 Qe8 11. Nd2 f6 12. Bc4 Qf7 13. Bxe6 Qxe6 14. Qb3 Qxb3
15. Nxb3 Rad8 16. Ke2 b6 17. a4 Rxd1 18. Rxd1 Rd8 19. Ra1 Kf7 20. Nd2 g6 21. Nc4
a5 22. f4 Ke6 23. Rf1 exf4 24. Bxf4 Rd7 25. h3 Nd8 26. Nd2 Nf7 27. Nb3 c5 28.
Nd2 Bd6 29. Be3 Be5 30. Nc4 Nd6 31. Nxd6 1/2-1/2

[Event "1st Prague Challengers"]
[Site "Prague CZE"]
[Date "2019.03.14"]
[Round "9.5"]
[White "Bartel, Mateusz"]
[Black "Paravyan, David"]
[Result "0-1"]
[WhiteTitle "GM"]
[BlackTitle "GM"]
[WhiteElo "2600"]
[BlackElo "2627"]
[ECO "A01"]
[Opening "Nimzovich-Larsen attack"]
[Variation "modern variation"]
[WhiteFideId "1112635"]
[BlackFideId "4194985"]
[EventDate "2019.03.06"]

1. b3 e5 2. Bb2 Nc6 3. e3 g6 4. h4 Nf6 5. Nf3 e4 6. Ng5 d5 7. h5 Bh6 8. Nh3 O-O
9. hxg6 fxg6 10. Nc3 Be6 11. Ne2 Bg4 12. a3 Qd6 13. d4 exd3 14. Qxd3 Ne5 15. Qd4
Rae8 16. O-O-O c5 17. Qa4 d4 18. Nhf4 Bxf4 19. exf4 Nc6 20. f3 Be6 21. Qb5 Nd5
22. Qxb7 Nc7 23. b4 Rb8 24. bxc5 Qd7 0-1

