[Event "Torneo Magistral "]
[Site "Hotel Dinastía, San Cristóbal,"]
[Date "2018.01.31"]
[Round "1.1"]
[White "Valderrama Espinosa, Gilberto"]
[Black "Torres Cueto, Jesus Marcial"]
[Result "1-0"]
[ECO "A00"]
[WhiteElo "2242"]
[BlackElo "2188"]
[PlyCount "107"]
[EventDate "2018.01.31"]

1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. d4 exd4 5. Nxd4 Bc5 6. e3 O-O 7. Be2 Re8 8.
O-O Rb8 9. a3 a5 10. b3 Bf8 11. Bb2 d6 12. Qd2 g6 13. Nd5 Ne4 14. Qc1 Nxd4 15.
Bxd4 Bg7 16. Bxg7 Kxg7 17. Bf3 c6 18. Bxe4 Rxe4 19. Qc3+ f6 20. Nf4 a4 21. b4
Qg8 22. Rac1 Qe8 23. Rfd1 g5 24. Rxd6 Be6 25. Nxe6+ Rxe6 26. Rcd1 b6 27. h3 Rb7
28. Qc2 b5 29. cxb5 cxb5 30. Rd8 Qc6 31. Qf5 Rbe7 32. Qd5 Qxd5 33. R8xd5 Rb7
34. Rc1 Reb6 35. Rcc5 Kf7 36. e4 h6 37. f3 Ke6 38. Kf2 h5 39. Ke3 h4 40. Kd4
Rb8 41. Rc7 R6b7 42. Rxb7 Rxb7 43. Kc5 Rb8 44. Kc6 Rc8+ 45. Kxb5 Rc2 46. Kxa4
f5 47. Rxf5 Rxg2 48. b5 Kd6 49. Kb4 Rg3 50. b6 Kc6 51. Rf6+ Kb7 52. Kb5 g4 53.
Rf7+ Kb8 54. hxg4 1-0

[Event "Torneo Magistral "]
[Site "Hotel Dinastía, San Cristóbal,"]
[Date "2018.01.31"]
[Round "1.2"]
[White "Romero Barreto, Jaime Jose"]
[Black "Sequeda Ramirez, Pablo"]
[Result "1-0"]
[ECO "A00"]
[WhiteElo "2228"]
[BlackElo "2087"]
[PlyCount "115"]
[EventDate "2018.01.31"]

1. e4 c5 2. Nf3 d6 3. c3 Nf6 4. Be2 Nbd7 5. d3 e6 6. O-O Be7 7. Re1 O-O 8. Bf1
b6 9. d4 cxd4 10. cxd4 Bb7 11. Nc3 h6 12. Bf4 a6 13. Bd3 Re8 14. Qd2 Bf8 15.
Rad1 b5 16. a3 e5 17. Bg3 Qb6 18. Bb1 a5 19. b4 axb4 20. axb4 Rac8 21. d5 Rc4
22. Na2 Rec8 23. Bd3 R4c7 24. Qe2 Qa7 25. Ra1 Qa3 26. Bxb5 Ra8 27. Bd3 Nb6 28.
Nd2 Ba6 29. b5 Bc8 30. h3 Nfd7 31. f3 Be7 32. Bf2 Bg5 33. Nc4 Nxc4 34. Bxc4 Ra4
35. Nc3 Qxa1 36. Rxa1 Rxa1+ 37. Kh2 Rb7 38. Qb2 Ra8 39. Qb4 Bd2 40. Qb2 Bg5 41.
h4 Bd8 42. Qb4 Ba5 43. Qb2 Nb6 44. Bf1 Rc7 45. Na2 Bd7 46. Nb4 Na4 47. Qb3 Bb6
48. Bxb6 Nxb6 49. Na6 Rc1 50. Be2 Re1 51. Bd3 Re3 52. Qc2 Rc8 53. Qd2 Rxd3 54.
Qxd3 Rc4 55. Qa3 Nc8 56. Qa5 Kh7 57. Nb8 Be8 58. Nc6 1-0

[Event "Torneo Magistral "]
[Site "Hotel Dinastía, San Cristóbal,"]
[Date "2018.01.31"]
[Round "1.3"]
[White "Brizuela Abreu, Reivis Gabriel"]
[Black "Rondon Chacon, Rene Ibrahim"]
[Result "1-0"]
[ECO "A00"]
[WhiteElo "2214"]
[BlackElo "2160"]
[PlyCount "85"]
[EventDate "2018.01.31"]

1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Nf3 c6 5. e3 Be7 6. Qc2 Nbd7 7. b3 O-O 8. Be2
a6 9. O-O b5 10. Bb2 b4 11. Na4 Ne4 12. Bd3 f5 13. cxd5 cxd5 14. Qc6 Ra7 15.
Qxe6+ Kh8 16. Qxd5 Bb7 17. Qc4 Rf6 18. d5 Rg6 19. Rfd1 Nd6 20. Qd4 Qa8 21. Be2
Ne4 22. Ne5 Nxe5 23. Qxe5 Bh4 24. f3 Bf6 25. Qxf5 Nc3 26. Qd3 Nxd1 27. Rxd1 a5
28. e4 Ba6 29. Qc2 Bxe2 30. Qxe2 Rc7 31. e5 Bg5 32. d6 Rc6 33. Qe4 Qe8 34. f4
Rcxd6 35. Re1 Rd2 36. fxg5 Rxg5 37. g3 Rh5 38. Re2 Rd1+ 39. Re1 Rxe1+ 40. Qxe1
Qc6 41. Qd1 Qe8 42. e6 Rh6 43. Nc5 1-0

[Event "Torneo Magistral "]
[Site "Hotel Dinastía, San Cristóbal,"]
[Date "2018.01.31"]
[Round "1.4"]
[White "Sanchez Alvarez, Kelvin Antonio"]
[Black "Franco Valencia, Beatriz Irene"]
[Result "1/2-1/2"]
[ECO "A00"]
[WhiteElo "2307"]
[BlackElo "2204"]
[PlyCount "93"]
[EventDate "2018.01.31"]

1. e4 g6 2. d4 c6 3. c4 d5 4. Nc3 dxe4 5. Nxe4 Bg7 6. Be3 Nd7 7. h3 Ngf6 8. Nc3
O-O 9. Nf3 Qc7 10. Be2 Rd8 11. Rc1 e5 12. d5 Nf8 13. O-O h6 14. Qa4 Ne8 15.
Rfd1 f5 16. c5 f4 17. d6 Qf7 18. Bd2 Be6 19. Ne4 Bd5 20. Bc4 b5 21. cxb6 axb6
22. Qxc6 Bxc4 23. Qxc4 Qxc4 24. Rxc4 Nxd6 25. Nxd6 Rxd6 26. Re1 Rxa2 27. Bb4
Re6 28. Ba3 g5 29. Rc8 e4 30. Bxf8 Bxf8 31. Nd4 Re5 32. Nc6 Re6 33. Rd1 e3 34.
fxe3 fxe3 35. Rf1 Rxc6 36. Rxc6 Bc5 37. Kh2 Rxb2 38. Re6 Rf2 39. Rxf2 exf2 40.
Rf6 Bd6+ 41. g3 Bf4 42. Kg2 Kg7 43. Rf5 f1=Q+ 44. Kxf1 Bxg3 45. Kg2 Kg6 46. Rb5
Bc7 47. h4 1/2-1/2

[Event "Torneo Magistral "]
[Site "Hotel Dinastía, San Cristóbal,"]
[Date "2018.02.02"]
[Round "2.1"]
[White "Torres Cueto, Jesus Marcial"]
[Black "Franco Valencia, Beatriz Irene"]
[Result "1/2-1/2"]
[ECO "A00"]
[WhiteElo "2188"]
[BlackElo "2204"]
[PlyCount "93"]
[EventDate "2018.01.31"]

1. e4 g6 2. d4 Bg7 3. Nc3 d6 4. h3 a6 5. Be3 b5 6. a3 Bb7 7. Nf3 Nd7 8. Qd2 Rc8
9. Be2 c5 10. d5 Qc7 11. O-O Ngf6 12. Bd3 c4 13. Be2 Nc5 14. Bxc5 Qxc5 15. Rfe1
O-O 16. Bf1 Nd7 17. Nd1 c3 18. bxc3 Bxc3 19. Nxc3 Qxc3 20. Qxc3 Rxc3 21. a4
bxa4 22. Rxa4 Nc5 23. Ra2 Ra8 24. Nd2 Nd7 25. Nc4 Ra7 26. Rb1 Bc8 27. Na5 Rac7
28. Nc6 Ne5 29. Nd4 Nc4 30. Rb8 Kg7 31. Nc6 Ne5 32. Nd4 Nd7 33. Rbb2 Ne5 34.
Rb4 Rb7 35. Rxb7 Bxb7 36. Bxa6 Bxa6 37. Rxa6 Rc4 38. Nc6 Nxc6 39. Rxc6 Rxe4 40.
Kf1 Rd4 41. c4 Rd2 42. Ke1 Rc2 43. Rc8 h5 44. g3 Kf6 45. Rc7 e6 46. dxe6 Kxe6
47. Kf1 1/2-1/2

[Event "Torneo Magistral "]
[Site "Hotel Dinastía, San Cristóbal,"]
[Date "2018.02.02"]
[Round "2.2"]
[White "Rondon Chacon, Rene Ibrahim"]
[Black "Sanchez Alvarez, Kelvin Antonio"]
[Result "0-1"]
[ECO "A00"]
[WhiteElo "2160"]
[BlackElo "2307"]
[PlyCount "152"]
[EventDate "2018.01.31"]

1. Nf3 c5 2. c4 g6 3. g3 Bg7 4. Bg2 Nf6 5. O-O O-O 6. Nc3 Nc6 7. d4 cxd4 8.
Nxd4 Nxd4 9. Qxd4 d6 10. Rd1 Qa5 11. Nd5 Nxd5 12. Qxd5 Qc7 13. Bg5 Rb8 14. Rac1
Bxb2 15. Rc2 Bg7 16. c5 Be6 17. Qd3 dxc5 18. Qa3 b6 19. Bf4 Be5 20. Bxe5 Qxe5
21. Qxa7 Rfd8 22. Rdc1 Rd7 23. Qa6 Qc7 24. a4 Qa7 25. Qb5 Rd4 26. Bc6 Rb4 27.
Qd3 Qc7 28. Qf3 Bg4 29. Qc3 Be6 30. Qf3 Bb3 31. Rb2 Bxa4 32. Rxb4 Bxc6 33. Qc3
cxb4 34. Qxc6 Qxc6 35. Rxc6 b5 36. Rc5 f6 37. Kf1 Kf7 38. Ke1 Ke6 39. Kd2 Kd6
40. Rc1 Ra8 41. f3 Ra2+ 42. Kd3 Ra3+ 43. Kd2 Rc3 44. Ra1 Ra3 45. Rc1 e5 46. h3
f5 47. g4 e4 48. fxe4 fxe4 49. Rc8 Ke5 50. g5 e3+ 51. Kd1 Rc3 52. Re8+ Kf4 53.
Rd8 b3 54. Rd4+ Ke5 55. Rb4 Rc5 56. Rxb3 Kf4 57. h4 Kg4 58. Rxe3 Kxh4 59. Re7
Rxg5 60. Rxh7+ Kg3 61. Ke1 Rc5 62. Rf7 g5 63. e4 Re5 64. Kd2 Rxe4 65. Rf5 g4
66. Rxb5 Kf2 67. Rf5+ Kg2 68. Kd3 Re8 69. Kd2 g3 70. Rf7 Kg1 71. Rf6 g2 72. Rf7
Re5 73. Rh7 Kf2 74. Rf7+ Kg3 75. Rg7+ Kf3 76. Kd3 Rd5+ 0-1

[Event "Torneo Magistral "]
[Site "Hotel Dinastía, San Cristóbal,"]
[Date "2018.02.02"]
[Round "2.3"]
[White "Sequeda Ramirez, Pablo"]
[Black "Brizuela Abreu, Reivis Gabriel"]
[Result "1/2-1/2"]
[ECO "A00"]
[WhiteElo "2087"]
[BlackElo "2214"]
[PlyCount "37"]
[EventDate "2018.01.31"]

1. c4 e6 2. Nf3 d5 3. cxd5 exd5 4. g3 Nf6 5. Bg2 Be7 6. O-O O-O 7. b3 c5 8. Bb2
Nc6 9. d4 Ne4 10. dxc5 Bxc5 11. e3 Qe7 12. Qe2 Bg4 13. h3 Bh5 14. Nbd2 Rfe8 15.
g4 Bg6 16. Nxe4 Bxe4 17. Rfd1 Rac8 18. Rac1 Bb6 19. Ba1 1/2-1/2

[Event "Torneo Magistral "]
[Site "Hotel Dinastía, San Cristóbal,"]
[Date "2018.02.02"]
[Round "2.4"]
[White "Valderrama Espinosa, Gilberto"]
[Black "Romero Barreto, Jaime Jose"]
[Result "0-1"]
[ECO "A00"]
[WhiteElo "2242"]
[BlackElo "2228"]
[PlyCount "112"]
[EventDate "2018.01.31"]

1. e4 e5 2. Nc3 Nf6 3. f4 exf4 4. e5 Nd5 5. Nxd5 Qh4+ 6. Ke2 f3+ 7. Nxf3 Qc4+
8. Kf2 Qxd5 9. d4 d6 10. c4 Qe6 11. exd6 Bxd6 12. c5 Be7 13. Bb5+ c6 14. Re1
Qd7 15. Bc4 O-O 16. Kg1 Bf6 17. Bf4 b5 18. Bb3 Na6 19. Be5 Be7 20. Qe2 Qg4 21.
Bxg7 Kxg7 22. Qxe7 Bf5 23. h3 Qf4 24. Qe5+ Qxe5 25. Nxe5 Rac8 26. Rf1 Bg6 27.
Rae1 Rc7 28. g4 Rd8 29. Rf4 Nb4 30. Ref1 Rf8 31. Rf6 Be4 32. Nxf7 Bg6 33. a3
Nd5 34. Bxd5 cxd5 35. Rxg6+ hxg6 36. Nd6 Rxf1+ 37. Kxf1 Kh6 38. Nxb5 Rf7+ 39.
Kg1 a6 40. Nc3 Rd7 41. h4 Kg7 42. b4 Kf6 43. a4 Ke6 44. b5 axb5 45. axb5 Rh7
46. b6 Rxh4 47. b7 Rh8 48. Na4 Kd7 49. Nb6+ Kc6 50. Nc8 Kxb7 51. Ne7 Re8 52.
Nxd5 Re4 53. Kf2 Rxd4 54. Ne3 Kc6 55. Kg3 g5 56. Nf5 Rd3+ 0-1

[Event "Torneo Magistral "]
[Site "Hotel Dinastía, San Cristóbal,"]
[Date "2018.02.02"]
[Round "3.1"]
[White "Romero Barreto, Jaime Jose"]
[Black "Torres Cueto, Jesus Marcial"]
[Result "1-0"]
[ECO "A00"]
[WhiteElo "2228"]
[BlackElo "2188"]
[PlyCount "115"]
[EventDate "2018.01.31"]

1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. Bd3 c5 6. c3 Nc6 7. Ne2 cxd4 8. cxd4
Qb6 9. Nf3 Bb4+ 10. Bd2 Bxd2+ 11. Qxd2 Qb4 12. O-O Qxd2 13. Nxd2 O-O 14. a3 Nb6
15. f4 g6 16. Kf2 Bd7 17. Ke3 Rac8 18. Rac1 a6 19. h4 h5 20. g4 hxg4 21. h5 Kg7
22. hxg6 fxg6 23. Rg1 Ne7 24. Rxc8 Rxc8 25. Rxg4 Bb5 26. Rg1 Bxd3 27. Kxd3 Na4
28. Rb1 Rh8 29. b3 Nb6 30. Nf3 Nf5 31. Ng5 Re8 32. Rh1 Nh6 33. Nc3 Re7 34. a4
Nd7 35. a5 Nf7 36. Rh7+ Kg8 37. Rxf7 Rxf7 38. Nxe6 Nf8 39. Nxf8 Kxf8 40. Nxd5
Rh7 41. Kc4 Kf7 42. Kc5 Ke6 43. Ne3 Rh4 44. d5+ Kd7 45. f5 Re4 46. e6+ Kd8 47.
Nc4 gxf5 48. Nd6 Re3 49. Nxf5 Rf3 50. Nd4 Rd3 51. d6 Rh3 52. e7+ Kd7 53. Ne6
Rh5+ 54. Kb4 Rh4+ 55. Ka3 Rh5 56. e8=Q+ Kxe8 57. Ng7+ Kd7 58. Nxh5 1-0

[Event "Torneo Magistral "]
[Site "Hotel Dinastía, San Cristóbal,"]
[Date "2018.02.02"]
[Round "3.2"]
[White "Brizuela Abreu, Reivis Gabriel"]
[Black "Valderrama Espinosa, Gilberto"]
[Result "1-0"]
[ECO "A00"]
[WhiteElo "2214"]
[BlackElo "2242"]
[PlyCount "103"]
[EventDate "2018.01.31"]

1. d4 Nf6 2. Nf3 b5 3. e3 a6 4. Bd3 Bb7 5. Nbd2 g6 6. e4 Bg7 7. c3 O-O 8. O-O
d6 9. a4 c6 10. Re1 Nbd7 11. Nb3 e5 12. dxe5 dxe5 13. Qe2 Qc7 14. h3 Rac8 15.
Bg5 h6 16. Be3 Nh5 17. g3 Rcd8 18. Bc2 Bc8 19. Kg2 Qd6 20. Red1 Qe6 21. Ng1 Bb7
22. Rd2 Rfe8 23. Rad1 Bf8 24. Na5 Ba8 25. Bb6 Nxb6 26. Rxd8 Kg7 27. Qd2 Rxd8
28. Qxd8 c5 29. Nf3 Nf6 30. Re1 bxa4 31. Qc7 Nfd7 32. Rd1 c4 33. Nxc4 Nxc4 34.
Qxd7 Qb6 35. Rb1 Bc6 36. Qd1 Qb7 37. Qe2 Bb5 38. Bd3 Nd6 39. Bxb5 axb5 40. Re1
f6 41. Nd2 Qc6 42. Qd3 h5 43. Qd5 Qc7 44. Re3 Qa7 45. Rd3 g5 46. Qc6 a3 47.
bxa3 Qxa3 48. Qd5 Qa6 49. Nb3 Qb6 50. Nc5 Be7 51. Qe6 Qxc5 52. Qxe7+ 1-0

[Event "Torneo Magistral "]
[Site "Hotel Dinastía, San Cristóbal,"]
[Date "2018.02.02"]
[Round "3.3"]
[White "Sanchez Alvarez, Kelvin Antonio"]
[Black "Sequeda Ramirez, Pablo"]
[Result "1/2-1/2"]
[ECO "A00"]
[WhiteElo "2307"]
[BlackElo "2087"]
[PlyCount "123"]
[EventDate "2018.01.31"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. f3 Nc6 8. Qd2
a6 9. Bc4 Bd7 10. Bb3 Qc7 11. g4 h6 12. O-O-O Ne5 13. h4 e6 14. Rhf1 O-O-O 15.
Qf2 b5 16. a4 bxa4 17. Nxa4 Bxa4 18. Bxa4 Nfd7 19. Kb1 Nc5 20. Qe2 Kb7 21. Bb3
Rb8 22. f4 Nxb3 23. cxb3 Nc6 24. Rc1 Bxd4 25. Bxd4 Rhc8 26. Qd2 Qa5 27. Bc3 Qb5
28. b4 Rd8 29. f5 Qc4 30. Qe3 Rd7 31. Bd2 Qb5 32. fxg6 fxg6 33. Rf6 Ne5 34.
Rxe6 Nxg4 35. Qd4 Ne5 36. Bc3 Rbd8 37. Rd1 g5 38. hxg5 hxg5 39. Qe3 Qc4 40. Rd5
Nc6 41. Qd2 g4 42. Qd3 Qxd3+ 43. Rxd3 Rg8 44. Rg3 Re7 45. Rxe7+ Nxe7 46. Kc2
Rg6 47. Kd3 Kc6 48. Kd4 d5 49. exd5+ Nxd5 50. Be1 Rg8 51. Ra3 Nc7 52. Rc3+ Kb7
53. Re3 Nb5+ 54. Kc5 Rc8+ 55. Kd5 Nc7+ 56. Ke4 Re8+ 57. Kd3 Rxe3+ 58. Kxe3 Kc6
59. Kf4 Kb5 60. Kxg4 Nd5 61. Kf3 Nxb4 62. Ke2 1/2-1/2

[Event "Torneo Magistral "]
[Site "Hotel Dinastía, San Cristóbal,"]
[Date "2018.02.02"]
[Round "3.4"]
[White "Franco Valencia, Beatriz Irene"]
[Black "Rondon Chacon, Rene Ibrahim"]
[Result "1-0"]
[ECO "A00"]
[WhiteElo "2204"]
[BlackElo "2160"]
[PlyCount "43"]
[EventDate "2018.01.31"]

1. d4 d5 2. Nf3 Nf6 3. e3 e6 4. Bd3 Nbd7 5. b3 Bb4+ 6. c3 Bd6 7. Nbd2 e5 8.
dxe5 Nxe5 9. Nxe5 Bxe5 10. Qc2 O-O 11. h3 c5 12. Nf3 Bd6 13. Bb2 a5 14. O-O h6
15. c4 Qe7 16. Rad1 Be6 17. Qc3 Rfd8 18. cxd5 Bxd5 19. e4 Bxe4 20. Rfe1 Qf8 21.
Rxe4 Bh2+ 22. Kxh2 1-0

[Event "Torneo Magistral "]
[Site "Hotel Dinastía, San Cristóbal,"]
[Date "2018.02.03"]
[Round "4.1"]
[White "Torres Cueto, Jesus Marcial"]
[Black "Rondon Chacon, Rene Ibrahim"]
[Result "0-1"]
[ECO "A00"]
[WhiteElo "2188"]
[BlackElo "2160"]
[PlyCount "62"]
[EventDate "2018.01.31"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 f5 4. Nc3 fxe4 5. Nxe4 d5 6. Nxe5 dxe4 7. Nxc6 Qg5
8. Qe2 Nf6 9. f4 Qh4+ 10. g3 Qh3 11. Nxa7+ Bd7 12. Bxd7+ Qxd7 13. Nb5 Bc5 14.
Nc3 O-O-O 15. h3 Rhe8 16. a4 Qc6 17. Rh2 Bg1 18. Rg2 e3 19. d3 Bf2+ 20. Kf1 Qd7
21. g4 h5 22. Nd1 hxg4 23. hxg4 Nd5 24. Nxf2 Nxf4 25. Qf3 Nxg2 26. Qxg2 exf2
27. Bg5 Qe6 28. Kxf2 Rf8+ 29. Kg1 Rd4 30. Rf1 Rxf1+ 31. Kxf1 Rxg4 0-1

[Event "Torneo Magistral "]
[Site "Hotel Dinastía, San Cristóbal,"]
[Date "2018.02.03"]
[Round "4.2"]
[White "Sequeda Ramirez, Pablo"]
[Black "Franco Valencia, Beatriz Irene"]
[Result "0-1"]
[ECO "A00"]
[WhiteElo "2087"]
[BlackElo "2204"]
[PlyCount "66"]
[EventDate "2018.01.31"]

1. c4 g6 2. g3 c5 3. Bg2 Bg7 4. Nf3 Nc6 5. O-O e6 6. Nc3 Nge7 7. Ne4 d6 8. d3
f5 9. Nc3 O-O 10. Rb1 Qd7 11. a3 b6 12. Bd2 Bb7 13. b4 h6 14. h4 Kh7 15. Ne1
Rad8 16. Qc1 Ng8 17. Nb5 Nf6 18. e3 Ne5 19. Bxb7 Qxb7 20. d4 Nf7 21. bxc5 dxc5
22. dxc5 bxc5 23. Ba5 Rd7 24. Bc3 Qc6 25. Qb2 e5 26. a4 a6 27. Na3 Ne4 28. a5
Rfd8 29. Qc2 Nxc3 30. Qxc3 e4 31. Qb3 Ne5 32. Qb6 Rd6 33. Qxc6 Nxc6 0-1

[Event "Torneo Magistral "]
[Site "Hotel Dinastía, San Cristóbal,"]
[Date "2018.02.03"]
[Round "4.3"]
[White "Valderrama Espinosa, Gilberto"]
[Black "Sanchez Alvarez, Kelvin Antonio"]
[Result "1-0"]
[ECO "A00"]
[WhiteElo "2242"]
[BlackElo "2307"]
[PlyCount "73"]
[EventDate "2018.01.31"]

1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 Nc6 5. Nf3 Bg4 6. Be2 Nf6 7. h3 Bh5 8. Be3
cxd4 9. cxd4 e6 10. Nc3 Qd6 11. O-O Be7 12. a3 O-O 13. Qb3 Rfd8 14. Rfd1 Rac8
15. Rac1 b6 16. d5 exd5 17. g4 Bg6 18. g5 Na5 19. Qb5 Ne4 20. Nxd5 Rxc1 21.
Bxc1 Qe6 22. Nxe7+ Qxe7 23. Rxd8+ Qxd8 24. Be3 Qe7 25. Qd5 Nb7 26. Ne5 Ned6 27.
Nc6 Qd7 28. Bg4 Qc7 29. Bf4 a5 30. b4 axb4 31. axb4 b5 32. h4 Bd3 33. Bf3 Bc4
34. Qe5 Qd7 35. Na5 f6 36. gxf6 Nf7 37. Qe7 1-0

[Event "Torneo Magistral "]
[Site "Hotel Dinastía, San Cristóbal,"]
[Date "2018.02.03"]
[Round "4.4"]
[White "Romero Barreto, Jaime Jose"]
[Black "Brizuela Abreu, Reivis Gabriel"]
[Result "0-1"]
[ECO "A00"]
[WhiteElo "2228"]
[BlackElo "2214"]
[PlyCount "82"]
[EventDate "2018.01.31"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. Nce2 c5 6. c3 Nc6 7. f4 Qb6 8. Nf3
f6 9. a3 Be7 10. g3 cxd4 11. cxd4 O-O 12. Bh3 fxe5 13. Bxe6+ Kh8 14. f5 exd4
15. Nf4 Nf6 16. O-O Bxe6 17. Nxe6 Ng4 18. Nfg5 Nce5 19. Nxf8 Rxf8 20. Ne6 d3+
21. Kh1 Nf2+ 22. Rxf2 Qxf2 23. Qg1 Rxf5 24. Bf4 Qxg1+ 25. Kxg1 g5 26. Be3 b6
27. Kg2 Kg8 28. Rd1 Nc4 29. Bd4 Kf7 30. g4 Re5 31. Nc7 Ne3+ 32. Bxe3 Rxe3 33.
Nxd5 Re2+ 34. Kf3 Rxb2 35. Rxd3 Rxh2 36. Ne3 Ra2 37. Nc4 b5 38. Nd6+ Bxd6 39.
Rxd6 Rxa3+ 40. Ke4 b4 41. Kf5 Ra5+ 0-1

[Event "Torneo Magistral "]
[Site "Hotel Dinastía, San Cristóbal,"]
[Date "2018.02.03"]
[Round "5.1"]
[White "Brizuela Abreu, Reivis Gabriel"]
[Black "Torres Cueto, Jesus Marcial"]
[Result "1-0"]
[ECO "A00"]
[WhiteElo "2214"]
[BlackElo "2188"]
[PlyCount "69"]
[EventDate "2018.01.31"]

1. d4 e6 2. c4 d5 3. Nc3 Nf6 4. Nf3 Bb4 5. e3 c5 6. Bd3 cxd4 7. exd4 dxc4 8.
Bxc4 O-O 9. O-O Bxc3 10. bxc3 Qc7 11. Qe2 a6 12. a4 Nd5 13. Bd2 Nd7 14. Rfc1
Nf4 15. Bxf4 Qxf4 16. Rab1 Nb6 17. Bb3 Bd7 18. a5 Nd5 19. Ne5 Rfd8 20. g3 Qh6
21. f4 Nf6 22. f5 Nd5 23. Qf3 Bc6 24. fxe6 fxe6 25. Nf7 Qg6 26. Nxd8 Rxd8 27.
Bc2 Qg5 28. h4 Qd2 29. Qd3 Qh6 30. Re1 Kh8 31. Rxe6 Qh5 32. Re5 Qh6 33. c4 Nf6
34. d5 Be8 35. Qe3 1-0

[Event "Torneo Magistral "]
[Site "Hotel Dinastía, San Cristóbal,"]
[Date "2018.02.03"]
[Round "5.2"]
[White "Sanchez Alvarez, Kelvin Antonio"]
[Black "Romero Barreto, Jaime Jose"]
[Result "1-0"]
[ECO "A00"]
[WhiteElo "2307"]
[BlackElo "2228"]
[PlyCount "111"]
[EventDate "2018.01.31"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Bc5 5. Nb3 Bb6 6. Nc3 Nf6 7. Bg5 h6 8.
Bh4 d6 9. Qe2 g5 10. Bg3 Qe7 11. h4 Rg8 12. O-O-O Be6 13. Nd5 Bxd5 14. exd5
Qxe2 15. Bxe2 Ne7 16. a4 a6 17. hxg5 hxg5 18. c4 Ne4 19. Rh7 Kf8 20. Bd3 Bxf2
21. Rf1 Nf6 22. Bxf2 Nxh7 23. Bxh7 Rh8 24. Be4 Re8 25. Kd2 Ng8 26. Bf5 Ne7 27.
Bd7 Rd8 28. Bg4 Ng6 29. Bd4 Rh4 30. Bf5 Rf4 31. Rxf4 Nxf4 32. g3 Nh5 33. g4 Ng3
34. Bd3 Re8 35. Kd1 f5 36. gxf5 g4 37. Nd2 Kf7 38. Nf1 Nxf1 39. Bxf1 Re4 40.
Bf2 Rf4 41. Ke1 Rxf5 42. Be2 Rf4 43. Bg3 Rd4 44. Kf2 Rd2 45. b4 b6 46. c5 Ke7
47. Bh4+ Kd7 48. Ke3 Rxd5 49. Bxg4+ Ke8 50. c6 a5 51. b5 Rc5 52. Bd7+ Kf7 53.
Bd8 Rc4 54. Bxc7 Ke7 55. Bxb6 Rxa4 56. Bf5 1-0

[Event "Torneo Magistral "]
[Site "Hotel Dinastía, San Cristóbal,"]
[Date "2018.02.03"]
[Round "5.3"]
[White "Franco Valencia, Beatriz Irene"]
[Black "Valderrama Espinosa, Gilberto"]
[Result "1/2-1/2"]
[ECO "A00"]
[WhiteElo "2204"]
[BlackElo "2242"]
[PlyCount "119"]
[EventDate "2018.01.31"]

1. d4 d5 2. c4 Nc6 3. e3 e5 4. cxd5 Qxd5 5. Nc3 Bb4 6. a3 Bxc3+ 7. bxc3 exd4 8.
exd4 Nf6 9. Nf3 O-O 10. Be2 Ne4 11. c4 Qa5+ 12. Bd2 Nxd2 13. Qxd2 Bg4 14. Qxa5
Nxa5 15. O-O Rad8 16. Rfd1 b6 17. d5 Rfe8 18. Bf1 Bxf3 19. gxf3 Nb3 20. Rab1
Nc5 21. Re1 Rxe1 22. Rxe1 Kf8 23. Re3 c6 24. dxc6 Rc8 25. f4 Rxc6 26. Bg2 Rf6
27. f5 Rxf5 28. Bc6 g6 29. Re8+ Kg7 30. Ra8 Rf6 31. Bd5 a5 32. Rd8 g5 33. f3 h5
34. Ba8 Re6 35. Kf2 f5 36. f4 g4 37. Bd5 Nd3+ 38. Kg3 Re3+ 39. Kh4 Nxf4 40. Kg5
Ne6+ 41. Bxe6 Rxe6 42. Rd7+ Kf8 43. Kxf5 Rc6 44. Rb7 Ke8 45. Ke5 Kd8 46. Kd5
Rc5+ 47. Kd4 Rc6 48. Kd5 Rh6 49. Rg7 Ke8 50. c5 bxc5 51. Kxc5 Kf8 52. Rg5 Kf7
53. Kd4 a4 54. Ke3 Rf6 55. Rxh5 Rf3+ 56. Ke4 Rxa3 57. Kf4 Ra1 58. Kxg4 a3 59.
Ra5 a2 60. Kh5 1/2-1/2

[Event "Torneo Magistral "]
[Site "Hotel Dinastía, San Cristóbal,"]
[Date "2018.02.03"]
[Round "5.4"]
[White "Rondon Chacon, Rene Ibrahim"]
[Black "Sequeda Ramirez, Pablo"]
[Result "1-0"]
[ECO "A00"]
[WhiteElo "2160"]
[BlackElo "2087"]
[PlyCount "83"]
[EventDate "2018.01.31"]

1. d4 d5 2. Nf3 e6 3. Bf4 f5 4. e3 Nf6 5. c4 c6 6. Nc3 Be7 7. Bd3 O-O 8. O-O
Ne4 9. h3 Nd7 10. Bh2 Ndf6 11. Ne5 Qe8 12. f3 Nxc3 13. bxc3 Qh5 14. Rb1 Qh6 15.
Qe2 g5 16. c5 Nh5 17. c4 f4 18. e4 dxe4 19. Bxe4 Ng7 20. Kh1 Nf5 21. Rfd1 a6
22. d5 exd5 23. cxd5 Bxc5 24. dxc6 b6 25. c7 Ra7 26. Nd7 Rxc7 27. Nxf8 Qxf8 28.
Bd5+ Kh8 29. Qe5+ Rg7 30. Bg1 Ne3 31. Rdc1 h5 32. Be6 Bxe6 33. Qxe6 g4 34. Rxb6
Bxb6 35. Rc8 Bd8 36. Qh6+ Kg8 37. Bxe3 fxe3 38. Qxe3 gxf3 39. gxf3 Kh7 40. Qd3+
Kh6 41. Rxd8 Qc5 42. Rd6+ 1-0

[Event "Torneo Magistral "]
[Site "Hotel Dinastía, San Cristóbal,"]
[Date "2018.02.04"]
[Round "6.1"]
[White "Torres Cueto, Jesus Marcial"]
[Black "Sequeda Ramirez, Pablo"]
[Result "1-0"]
[ECO "A00"]
[WhiteElo "2188"]
[BlackElo "2087"]
[PlyCount "117"]
[EventDate "2018.01.31"]

1. e4 c5 2. Nc3 Nc6 3. d3 a6 4. Be3 e6 5. g3 d5 6. Bd2 dxe4 7. Nxe4 Nf6 8. Bg2
Nxe4 9. Bxe4 Qc7 10. Ne2 Be7 11. Bc3 e5 12. Bg2 h5 13. h3 Bd7 14. Qd2 O-O-O 15.
O-O-O Nd4 16. f4 f6 17. Kb1 Bd6 18. fxe5 fxe5 19. Rhf1 Bc6 20. Ng1 e4 21. Bxd4
cxd4 22. Bxe4 Bxg3 23. Bxc6 Qxc6 24. Qg5 Qc7 25. Rf5 Kb8 26. Ne2 Bh2 27. Rdf1
Rhe8 28. Rf7 Qc6 29. Qxh5 Be5 30. Qf3 Bf6 31. Qxc6 bxc6 32. Ng3 Be5 33. Ne4 Rh8
34. Nc5 Rxh3 35. Nd7+ Rxd7 36. Rxd7 Bf6 37. a3 Re3 38. Ka2 a5 39. Kb3 Kc8 40.
Ra7 Re5 41. a4 Kb8 42. Rf7 Re8 43. Rh1 Kc8 44. Kc4 Kb8 45. Kc5 Ka8 46. Kxc6 Rb8
47. b3 Rc8+ 48. Rc7 Rb8 49. Re1 Bd8 50. Rxg7 Rc8+ 51. Kd5 Bb6 52. Re6 Rd8+ 53.
Kc6 Ba7 54. Rge7 Bb8 55. Kb6 Rf8 56. Kb5 Rf5+ 57. Kc4 Ba7 58. Re8+ Bb8 59.
Rxb8+ 1-0

[Event "Torneo Magistral "]
[Site "Hotel Dinastía, San Cristóbal,"]
[Date "2018.02.04"]
[Round "6.2"]
[White "Valderrama Espinosa, Gilberto"]
[Black "Rondon Chacon, Rene Ibrahim"]
[Result "1/2-1/2"]
[ECO "A00"]
[WhiteElo "2242"]
[BlackElo "2160"]
[PlyCount "114"]
[EventDate "2018.01.31"]

1. e4 e5 2. Nf3 Nf6 3. Nc3 Bb4 4. Bc4 d6 5. d3 Be6 6. Bb3 Nbd7 7. O-O O-O 8.
Bg5 Nc5 9. Ne2 h6 10. Be3 Nxb3 11. axb3 c6 12. Ng3 Ba5 13. d4 Bb6 14. dxe5 dxe5
15. Qxd8 Raxd8 16. Bxb6 axb6 17. Nxe5 Rfe8 18. f4 h5 19. h4 Rd2 20. Rf2 Rd4 21.
Re1 Ng4 22. Nf3 Rdd8 23. Rd2 Rxd2 24. Nxd2 g6 25. f5 Bxf5 26. Nc4 Be6 27. Nxb6
Rd8 28. Nf1 Rd4 29. Na4 Nf6 30. Nc3 b5 31. Ng3 Bg4 32. e5 Nd7 33. Nge4 b4 34.
Na4 Rd1 35. Kf2 Rxe1 36. Kxe1 Bf5 37. Nac5 Nxe5 38. Kd2 Kf8 39. Nd6 Be6 40. Na6
Ke7 41. Nb7 Bc8 42. Nbc5 Kd6 43. c3 bxc3+ 44. bxc3 Bxa6 45. Nxa6 c5 46. Ke3 f6
47. b4 cxb4 48. cxb4 Kc6 49. Nc5 Kb5 50. Ne4 Ng4+ 51. Kf4 Kxb4 52. Nxf6 Nxf6
53. Kg5 Ne4+ 54. Kxg6 Ng3 55. Kg5 Kc5 56. Kf4 Ne2+ 57. Kg5 Ng3 1/2-1/2

[Event "Torneo Magistral "]
[Site "Hotel Dinastía, San Cristóbal,"]
[Date "2018.02.04"]
[Round "6.3"]
[White "Romero Barreto, Jaime Jose"]
[Black "Franco Valencia, Beatriz Irene"]
[Result "1-0"]
[ECO "A00"]
[WhiteElo "2228"]
[BlackElo "2204"]
[PlyCount "85"]
[EventDate "2018.01.31"]

1. e4 g6 2. d4 Bg7 3. Nc3 d6 4. Nf3 c6 5. Be3 b5 6. Qd2 Bg4 7. Be2 Nf6 8. a3
Qa5 9. O-O O-O 10. e5 dxe5 11. Nxe5 Bxe2 12. Qxe2 Nfd7 13. Bf4 e6 14. Rad1 Nf6
15. Rd3 Qb6 16. Qd2 Nd5 17. Bh6 f6 18. Bxg7 Kxg7 19. Ng4 Nd7 20. Rh3 Rf7 21.
Qh6+ Kg8 22. Qh4 Kh8 23. Nxd5 cxd5 24. c3 Re8 25. Rf3 Ref8 26. Re1 a5 27. Rfe3
e5 28. dxe5 fxe5 29. Qg3 Rf4 30. R1e2 e4 31. h3 b4 32. axb4 axb4 33. Rd2 bxc3
34. bxc3 h5 35. Rxd5 Qb7 36. Rxd7 Qxd7 37. Ne5 Qd1+ 38. Kh2 h4 39. Qg5 Qd6 40.
Nxg6+ Kh7 41. Nxf4 Rxf4 42. Qh5+ Kg7 43. Kg1 1-0

[Event "Torneo Magistral "]
[Site "Hotel Dinastía, San Cristóbal,"]
[Date "2018.02.04"]
[Round "6.4"]
[White "Brizuela Abreu, Reivis Gabriel"]
[Black "Sanchez Alvarez, Kelvin Antonio"]
[Result "1-0"]
[ECO "A00"]
[WhiteElo "2214"]
[BlackElo "2307"]
[PlyCount "113"]
[EventDate "2018.01.31"]

1. d4 Nf6 2. c4 e6 3. Nc3 c5 4. d5 exd5 5. cxd5 g6 6. Nf3 Bg7 7. Bf4 d6 8. Qa4+
Bd7 9. Qb3 Qc7 10. e4 O-O 11. Bd3 Nh5 12. Be3 Na6 13. O-O Nb4 14. Be2 Rab8 15.
Rac1 Rfe8 16. e5 Bxe5 17. Nxe5 Rxe5 18. a3 Na6 19. Bxh5 gxh5 20. Bf4 Rf5 21.
Ne2 Rf6 22. Qc3 Rg6 23. Bg3 Bb5 24. Rfe1 Bxe2 25. Rxe2 Qd8 26. Rce1 Nc7 27. Qf3
Qg5 28. Re7 Rf6 29. Qe4 Nxd5 30. Bh4 Qf4 31. Bxf6 Qxe4 32. R7xe4 Nxf6 33. Rf4
Kg7 34. Rf3 b5 35. Re7 a6 36. h3 d5 37. Rc7 c4 38. Rc6 Ne4 39. Rxa6 Rb7 40. Rf4
Rd7 41. f3 Nc5 42. Rc6 Ne6 43. Rf5 d4 44. Kf1 d3 45. Ke1 Nd4 46. Rg5+ Kf8 47.
Rc8+ Ke7 48. Re5+ Kf6 49. Rcc5 Rb7 50. Kd1 b4 51. axb4 Rxb4 52. Re4 Nc2 53. Kc1
Ra4 54. Rcxc4 Ra1+ 55. Kd2 Rg1 56. g4 Rg2+ 57. Kxd3 1-0

[Event "Torneo Magistral "]
[Site "Hotel Dinastía, San Cristóbal,"]
[Date "2018.02.04"]
[Round "7.1"]
[White "Sanchez Alvarez, Kelvin Antonio"]
[Black "Torres Cueto, Jesus Marcial"]
[Result "1-0"]
[ECO "A00"]
[WhiteElo "2307"]
[BlackElo "2188"]
[PlyCount "139"]
[EventDate "2018.01.31"]

1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 Qxd5 5. Ngf3 cxd4 6. Bc4 Qd6 7. O-O Nf6 8.
Nb3 Nc6 9. Nbxd4 Nxd4 10. Nxd4 a6 11. c3 Qc7 12. Qe2 Bd6 13. h3 O-O 14. Bg5 b5
15. Bd3 Nd5 16. a4 h6 17. Bd2 b4 18. cxb4 Qb6 19. Nc2 Bxb4 20. a5 Qd6 21. Qe4
f5 22. Bxb4 fxe4 23. Bxd6 exd3 24. Bxf8 dxc2 25. Bd6 Bd7 26. b4 Nc3 27. Rfe1
Bb5 28. Rac1 Ne2+ 29. Rxe2 Bxe2 30. Rxc2 Bb5 31. Be7 Ra7 32. Rc8+ Kf7 33. Bc5
Rd7 34. g4 Kg6 35. Kg2 h5 36. gxh5+ Kxh5 37. Re8 Bc4 38. Rh8+ Kg6 39. h4 Kf5
40. Rf8+ Kg6 41. Kg3 Rd1 42. Kf4 Rd5 43. Ke4 Bd3+ 44. Ke3 Bc4 45. f4 Rf5 46.
Rc8 Bb5 47. Rc7 e5 48. fxe5 Rxe5+ 49. Kd4 Rf5 50. Bd6 Rf1 51. Be5 Rd1+ 52. Ke4
Rd7 53. Rc1 Kh5 54. Bg3 Kg4 55. Bf2 Re7+ 56. Kd5 Kf5 57. Rc8 Re5+ 58. Kd6 Re4
59. Rc5+ Kf6 60. Rxb5 axb5 61. Bc5 Rxh4 62. a6 Rh2 63. a7 Ra2 64. Kc7 Ke6 65.
Kb7 Kd5 66. a8=Q Rxa8 67. Kxa8 g5 68. Kb7 g4 69. Ka6 Kc4 70. Ka5 1-0

[Event "Torneo Magistral "]
[Site "Hotel Dinastía, San Cristóbal,"]
[Date "2018.02.04"]
[Round "7.2"]
[White "Franco Valencia, Beatriz Irene"]
[Black "Brizuela Abreu, Reivis Gabriel"]
[Result "1/2-1/2"]
[ECO "A00"]
[WhiteElo "2204"]
[BlackElo "2214"]
[PlyCount "21"]
[EventDate "2018.01.31"]

1. d4 e6 2. c4 d5 3. cxd5 exd5 4. Nc3 Nf6 5. Nf3 Be7 6. g3 O-O 7. Bg2 c5 8. O-O
Nc6 9. b3 Ne4 10. Bb2 Bf6 11. e3 1/2-1/2

[Event "Torneo Magistral "]
[Site "Hotel Dinastía, San Cristóbal,"]
[Date "2018.02.04"]
[Round "7.3"]
[White "Rondon Chacon, Rene Ibrahim"]
[Black "Romero Barreto, Jaime Jose"]
[Result "0-1"]
[ECO "A00"]
[WhiteElo "2160"]
[BlackElo "2228"]
[PlyCount "78"]
[EventDate "2018.01.31"]

1. d4 Nf6 2. c4 d6 3. Nc3 e5 4. d5 g6 5. e4 Bg7 6. Be2 Na6 7. Bg5 h6 8. Be3 Nc5
9. f3 Nh5 10. Qd2 f5 11. exf5 gxf5 12. O-O-O Bf6 13. Nh3 Nd7 14. g4 f4 15. Bf2
Ng7 16. Ne4 Bh4 17. Qc2 Bxf2 18. Nhxf2 Qh4 19. Bd3 O-O 20. Rdg1 Kh8 21. Qe2 Rf7
22. Rg2 Nf8 23. Rhg1 Bd7 24. g5 h5 25. Nf6 Nf5 26. Nxd7 Nd4 27. Qd1 Nxd7 28.
Ne4 Kg7 29. g6 Re7 30. Ng5 a5 31. Qe1 Qxe1+ 32. Rxe1 Nc5 33. Be4 a4 34. Rf1 Ra6
35. Nh7 Rb6 36. Rfg1 Nxe4 37. fxe4 f3 38. Rf2 Ne2+ 39. Rxe2 fxe2 0-1

[Event "Torneo Magistral "]
[Site "Hotel Dinastía, San Cristóbal,"]
[Date "2018.02.04"]
[Round "7.4"]
[White "Sequeda Ramirez, Pablo"]
[Black "Valderrama Espinosa, Gilberto"]
[Result "1/2-1/2"]
[ECO "A00"]
[WhiteElo "2087"]
[BlackElo "2242"]
[PlyCount "125"]
[EventDate "2018.01.31"]

1. c4 e6 2. g3 c5 3. Bg2 Nc6 4. Nc3 Nf6 5. Nf3 Be7 6. O-O O-O 7. d4 d5 8. cxd5
exd5 9. dxc5 Bxc5 10. Na4 Be7 11. b3 Be6 12. Bb2 Ne4 13. Rc1 Bf6 14. Bxf6 Qxf6
15. Nd2 Rfe8 16. Nxe4 dxe4 17. Qe1 Bf5 18. Nc5 Qe7 19. f4 Rac8 20. e3 b6 21. g4
Bxg4 22. Nxe4 Nb4 23. Nf2 Bd7 24. Qe2 a6 25. Rxc8 Rxc8 26. Rd1 Rc2 27. Rd2 Rc1+
28. Rd1 Qc5 29. Qd2 Rxd1+ 30. Nxd1 Be8 31. a3 Nc6 32. b4 Qe7 33. Qd3 Qd8 34.
Qxd8 Nxd8 35. Nc3 Bc6 36. Bxc6 Nxc6 37. Nd5 b5 38. Nc7 Nb8 39. e4 Kf8 40. Kf2
Ke7 41. Ke3 Kd7 42. Nd5 Kd6 43. Nc3 f6 44. h4 g6 45. Kd3 h6 46. Ke3 Nd7 47. Kd4
g5 48. hxg5 hxg5 49. fxg5 fxg5 50. Nd1 Ne5 51. Ne3 Nf3+ 52. Kd3 Ke5 53. Nd5
Ne1+ 54. Ke3 Nc2+ 55. Kf3 Nxa3 56. Nc7 Nc4 57. Nxa6 Nd2+ 58. Kg4 Nxe4 59. Nc7
Kf6 60. Nxb5 Nf2+ 61. Kh5 Nd3 62. Nd6 Nxb4 63. Ne4+ 1/2-1/2